diff options
Diffstat (limited to 'target/linux/omap24xx/patches-2.6.38')
15 files changed, 10490 insertions, 0 deletions
diff --git a/target/linux/omap24xx/patches-2.6.38/200-omap-platform.patch b/target/linux/omap24xx/patches-2.6.38/200-omap-platform.patch new file mode 100644 index 0000000000..2c31b24a63 --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/200-omap-platform.patch @@ -0,0 +1,912 @@ +Index: linux-2.6.38-rc6/arch/arm/plat-omap/bootreason.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/arch/arm/plat-omap/bootreason.c 2011-02-25 01:11:27.298563256 +0100 +@@ -0,0 +1,79 @@ ++/* ++ * linux/arch/arm/plat-omap/bootreason.c ++ * ++ * OMAP Bootreason passing ++ * ++ * Copyright (c) 2004 Nokia ++ * ++ * Written by David Weinehall <david.weinehall@nokia.com> ++ * ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of the GNU General Public License as published by the ++ * Free Software Foundation; either version 2 of the License, or (at your ++ * option) any later version. ++ * ++ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED ++ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF ++ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN ++ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, ++ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT ++ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF ++ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ++ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF ++ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ++ * ++ * You should have received a copy of the GNU General Public License along ++ * with this program; if not, write to the Free Software Foundation, Inc., ++ * 675 Mass Ave, Cambridge, MA 02139, USA. ++ */ ++#include <linux/proc_fs.h> ++#include <linux/errno.h> ++#include <plat/board.h> ++ ++static char boot_reason[16]; ++ ++static int omap_bootreason_read_proc(char *page, char **start, off_t off, ++ int count, int *eof, void *data) ++{ ++ int len = 0; ++ ++ len += sprintf(page + len, "%s\n", boot_reason); ++ ++ *start = page + off; ++ ++ if (len > off) ++ len -= off; ++ else ++ len = 0; ++ ++ return len < count ? len : count; ++} ++ ++static int __init bootreason_init(void) ++{ ++ const struct omap_boot_reason_config *cfg; ++ int reason_valid = 0; ++ ++ cfg = omap_get_config(OMAP_TAG_BOOT_REASON, struct omap_boot_reason_config); ++ if (cfg != NULL) { ++ strncpy(boot_reason, cfg->reason_str, sizeof(cfg->reason_str)); ++ boot_reason[sizeof(cfg->reason_str)] = 0; ++ reason_valid = 1; ++ } else { ++ /* Read the boot reason from the OMAP registers */ ++ } ++ ++ if (!reason_valid) ++ return -ENOENT; ++ ++ printk(KERN_INFO "Bootup reason: %s\n", boot_reason); ++ ++ if (!create_proc_read_entry("bootreason", S_IRUGO, NULL, ++ omap_bootreason_read_proc, NULL)) ++ return -ENOMEM; ++ ++ return 0; ++} ++ ++late_initcall(bootreason_init); +Index: linux-2.6.38-rc6/arch/arm/plat-omap/common.c +=================================================================== +--- linux-2.6.38-rc6.orig/arch/arm/plat-omap/common.c 2011-02-25 01:10:25.645115298 +0100 ++++ linux-2.6.38-rc6/arch/arm/plat-omap/common.c 2011-02-25 01:11:27.298563256 +0100 +@@ -21,17 +21,89 @@ + #include <plat/vram.h> + #include <plat/dsp.h> + ++#include <asm/setup.h> ++ + + #define NO_LENGTH_CHECK 0xffffffff + + struct omap_board_config_kernel *omap_board_config; + int omap_board_config_size; + ++unsigned char omap_bootloader_tag[1024]; ++int omap_bootloader_tag_len; ++ ++/* used by omap-smp.c and board-4430sdp.c */ ++void __iomem *gic_cpu_base_addr; ++ ++#ifdef CONFIG_OMAP_BOOT_TAG ++ ++static int __init parse_tag_omap(const struct tag *tag) ++{ ++ u32 size = tag->hdr.size - (sizeof(tag->hdr) >> 2); ++ ++ size <<= 2; ++ if (size > sizeof(omap_bootloader_tag)) ++ return -1; ++ ++ memcpy(omap_bootloader_tag, tag->u.omap.data, size); ++ omap_bootloader_tag_len = size; ++ ++ return 0; ++} ++ ++__tagtable(ATAG_BOARD, parse_tag_omap); ++ ++#endif ++ + static const void *get_config(u16 tag, size_t len, int skip, size_t *len_out) + { + struct omap_board_config_kernel *kinfo = NULL; + int i; + ++#ifdef CONFIG_OMAP_BOOT_TAG ++ struct omap_board_config_entry *info = NULL; ++ ++ if (omap_bootloader_tag_len > 4) ++ info = (struct omap_board_config_entry *) omap_bootloader_tag; ++ while (info != NULL) { ++ u8 *next; ++ ++ if (info->tag == tag) { ++ if (skip == 0) ++ break; ++ skip--; ++ } ++ ++ if ((info->len & 0x03) != 0) { ++ /* We bail out to avoid an alignment fault */ ++ printk(KERN_ERR "OMAP peripheral config: Length (%d) not word-aligned (tag %04x)\n", ++ info->len, info->tag); ++ return NULL; ++ } ++ next = (u8 *) info + sizeof(*info) + info->len; ++ if (next >= omap_bootloader_tag + omap_bootloader_tag_len) ++ info = NULL; ++ else ++ info = (struct omap_board_config_entry *) next; ++ } ++ if (info != NULL) { ++ /* Check the length as a lame attempt to check for ++ * binary inconsistency. */ ++ if (len != NO_LENGTH_CHECK) { ++ /* Word-align len */ ++ if (len & 0x03) ++ len = (len + 3) & ~0x03; ++ if (info->len != len) { ++ printk(KERN_ERR "OMAP peripheral config: Length mismatch with tag %x (want %d, got %d)\n", ++ tag, len, info->len); ++ return NULL; ++ } ++ } ++ if (len_out != NULL) ++ *len_out = info->len; ++ return info->data; ++ } ++#endif + /* Try to find the config from the board-specific structures + * in the kernel. */ + for (i = 0; i < omap_board_config_size; i++) { +Index: linux-2.6.38-rc6/arch/arm/plat-omap/component-version.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/arch/arm/plat-omap/component-version.c 2011-02-25 01:11:27.299563117 +0100 +@@ -0,0 +1,64 @@ ++/* ++ * linux/arch/arm/plat-omap/component-version.c ++ * ++ * Copyright (C) 2005 Nokia Corporation ++ * Written by Juha Yrjölä <juha.yrjola@nokia.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++#include <linux/init.h> ++#include <linux/module.h> ++#include <linux/err.h> ++#include <linux/proc_fs.h> ++#include <plat/board.h> ++ ++static int component_version_read_proc(char *page, char **start, off_t off, ++ int count, int *eof, void *data) ++{ ++ int len, i; ++ const struct omap_version_config *ver; ++ char *p; ++ ++ i = 0; ++ p = page; ++ while ((ver = omap_get_nr_config(OMAP_TAG_VERSION_STR, ++ struct omap_version_config, i)) != NULL) { ++ p += sprintf(p, "%-12s%s\n", ver->component, ver->version); ++ i++; ++ } ++ ++ len = (p - page) - off; ++ if (len < 0) ++ len = 0; ++ ++ *eof = (len <= count) ? 1 : 0; ++ *start = page + off; ++ ++ return len; ++} ++ ++static int __init component_version_init(void) ++{ ++ if (omap_get_config(OMAP_TAG_VERSION_STR, struct omap_version_config) == NULL) ++ return -ENODEV; ++ if (!create_proc_read_entry("component_version", S_IRUGO, NULL, ++ component_version_read_proc, NULL)) ++ return -ENOMEM; ++ ++ return 0; ++} ++ ++static void __exit component_version_exit(void) ++{ ++ remove_proc_entry("component_version", NULL); ++} ++ ++late_initcall(component_version_init); ++module_exit(component_version_exit); ++ ++MODULE_AUTHOR("Juha Yrjölä <juha.yrjola@nokia.com>"); ++MODULE_DESCRIPTION("Component version driver"); ++MODULE_LICENSE("GPL"); +Index: linux-2.6.38-rc6/arch/arm/plat-omap/Kconfig +=================================================================== +--- linux-2.6.38-rc6.orig/arch/arm/plat-omap/Kconfig 2011-02-25 01:10:25.621118611 +0100 ++++ linux-2.6.38-rc6/arch/arm/plat-omap/Kconfig 2011-02-25 01:11:27.299563117 +0100 +@@ -79,6 +79,38 @@ + probably do not want this option enabled until your + device drivers work properly. + ++config OMAP_BOOT_TAG ++ bool "OMAP bootloader information passing" ++ depends on ARCH_OMAP ++ default n ++ help ++ Say Y, if you have a bootloader which passes information ++ about your board and its peripheral configuration. ++ ++config OMAP_BOOT_REASON ++ bool "Support for boot reason" ++ depends on OMAP_BOOT_TAG ++ default n ++ help ++ Say Y, if you want to have a procfs entry for reading the boot ++ reason in user-space. ++ ++config OMAP_COMPONENT_VERSION ++ bool "Support for component version display" ++ depends on OMAP_BOOT_TAG && PROC_FS ++ default n ++ help ++ Say Y, if you want to have a procfs entry for reading component ++ versions (supplied by the bootloader) in user-space. ++ ++config OMAP_GPIO_SWITCH ++ bool "GPIO switch support" ++ help ++ Say Y, if you want to have support for reporting of GPIO ++ switches (e.g. cover switches) via sysfs. Your bootloader has ++ to provide information about the switches to the kernel via the ++ ATAG_BOARD mechanism if they're not defined by the board config. ++ + config OMAP_MUX + bool "OMAP multiplexing support" + depends on ARCH_OMAP +Index: linux-2.6.38-rc6/arch/arm/plat-omap/Makefile +=================================================================== +--- linux-2.6.38-rc6.orig/arch/arm/plat-omap/Makefile 2011-02-25 01:10:25.604120958 +0100 ++++ linux-2.6.38-rc6/arch/arm/plat-omap/Makefile 2011-02-25 01:11:27.299563117 +0100 +@@ -23,6 +23,9 @@ + + obj-$(CONFIG_CPU_FREQ) += cpu-omap.o + obj-$(CONFIG_OMAP_DM_TIMER) += dmtimer.o ++obj-$(CONFIG_OMAP_BOOT_REASON) += bootreason.o ++obj-$(CONFIG_OMAP_COMPONENT_VERSION) += component-version.o ++obj-$(CONFIG_OMAP_GPIO_SWITCH) += gpio-switch.o + obj-$(CONFIG_OMAP_DEBUG_DEVICES) += debug-devices.o + obj-$(CONFIG_OMAP_DEBUG_LEDS) += debug-leds.o + i2c-omap-$(CONFIG_I2C_OMAP) := i2c.o +Index: linux-2.6.38-rc6/arch/arm/include/asm/setup.h +=================================================================== +--- linux-2.6.38-rc6.orig/arch/arm/include/asm/setup.h 2011-02-25 01:10:25.523132140 +0100 ++++ linux-2.6.38-rc6/arch/arm/include/asm/setup.h 2011-02-25 01:11:27.300562978 +0100 +@@ -136,6 +136,13 @@ + __u8 adfsdrives; + }; + ++/* TI OMAP specific information */ ++#define ATAG_BOARD 0x414f4d50 ++ ++struct tag_omap { ++ u8 data[0]; ++}; ++ + /* footbridge memory clock, see arch/arm/mach-footbridge/arch.c */ + #define ATAG_MEMCLK 0x41000402 + +@@ -162,6 +169,11 @@ + struct tag_acorn acorn; + + /* ++ * OMAP specific ++ */ ++ struct tag_omap omap; ++ ++ /* + * DC21285 specific + */ + struct tag_memclk memclk; +Index: linux-2.6.38-rc6/arch/arm/plat-omap/gpio-switch.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/arch/arm/plat-omap/gpio-switch.c 2011-02-25 01:11:27.301562839 +0100 +@@ -0,0 +1,554 @@ ++/* ++ * linux/arch/arm/plat-omap/gpio-switch.c ++ * ++ * Copyright (C) 2004-2006 Nokia Corporation ++ * Written by Juha Yrjölä <juha.yrjola@nokia.com> ++ * and Paul Mundt <paul.mundt@nokia.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++#include <linux/sched.h> ++#include <linux/init.h> ++#include <linux/list.h> ++#include <linux/irq.h> ++#include <linux/interrupt.h> ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/timer.h> ++#include <linux/err.h> ++#include <linux/slab.h> ++#include <linux/gpio.h> ++#include <plat/hardware.h> ++#include <plat/irqs.h> ++#include <plat/mux.h> ++#include <plat/board.h> ++#include <plat/gpio-switch.h> ++ ++struct gpio_switch { ++ char name[14]; ++ u16 gpio; ++ unsigned flags:4; ++ unsigned type:4; ++ unsigned state:1; ++ unsigned both_edges:1; ++ ++ u16 debounce_rising; ++ u16 debounce_falling; ++ ++ void (* notify)(void *data, int state); ++ void *notify_data; ++ ++ struct work_struct work; ++ struct timer_list timer; ++ struct platform_device pdev; ++ ++ struct list_head node; ++}; ++ ++static LIST_HEAD(gpio_switches); ++static struct platform_device *gpio_sw_platform_dev; ++static struct platform_driver gpio_sw_driver; ++ ++static const struct omap_gpio_switch *board_gpio_sw_table; ++static int board_gpio_sw_count; ++ ++static const char *cover_str[2] = { "open", "closed" }; ++static const char *connection_str[2] = { "disconnected", "connected" }; ++static const char *activity_str[2] = { "inactive", "active" }; ++ ++/* ++ * GPIO switch state default debounce delay in ms ++ */ ++#define OMAP_GPIO_SW_DEFAULT_DEBOUNCE 10 ++ ++static const char **get_sw_str(struct gpio_switch *sw) ++{ ++ switch (sw->type) { ++ case OMAP_GPIO_SWITCH_TYPE_COVER: ++ return cover_str; ++ case OMAP_GPIO_SWITCH_TYPE_CONNECTION: ++ return connection_str; ++ case OMAP_GPIO_SWITCH_TYPE_ACTIVITY: ++ return activity_str; ++ default: ++ BUG(); ++ return NULL; ++ } ++} ++ ++static const char *get_sw_type(struct gpio_switch *sw) ++{ ++ switch (sw->type) { ++ case OMAP_GPIO_SWITCH_TYPE_COVER: ++ return "cover"; ++ case OMAP_GPIO_SWITCH_TYPE_CONNECTION: ++ return "connection"; ++ case OMAP_GPIO_SWITCH_TYPE_ACTIVITY: ++ return "activity"; ++ default: ++ BUG(); ++ return NULL; ++ } ++} ++ ++static void print_sw_state(struct gpio_switch *sw, int state) ++{ ++ const char **str; ++ ++ str = get_sw_str(sw); ++ if (str != NULL) ++ printk(KERN_INFO "%s (GPIO %d) is now %s\n", sw->name, sw->gpio, str[state]); ++} ++ ++static int gpio_sw_get_state(struct gpio_switch *sw) ++{ ++ int state; ++ ++ state = gpio_get_value(sw->gpio); ++ if (sw->flags & OMAP_GPIO_SWITCH_FLAG_INVERTED) ++ state = !state; ++ ++ return state; ++} ++ ++static ssize_t gpio_sw_state_store(struct device *dev, ++ struct device_attribute *attr, ++ const char *buf, ++ size_t count) ++{ ++ struct gpio_switch *sw = dev_get_drvdata(dev); ++ const char **str; ++ char state[16]; ++ int enable; ++ ++ if (!(sw->flags & OMAP_GPIO_SWITCH_FLAG_OUTPUT)) ++ return -EPERM; ++ ++ if (sscanf(buf, "%15s", state) != 1) ++ return -EINVAL; ++ ++ str = get_sw_str(sw); ++ if (strcmp(state, str[0]) == 0) ++ sw->state = enable = 0; ++ else if (strcmp(state, str[1]) == 0) ++ sw->state = enable = 1; ++ else ++ return -EINVAL; ++ ++ if (sw->flags & OMAP_GPIO_SWITCH_FLAG_INVERTED) ++ enable = !enable; ++ gpio_set_value(sw->gpio, enable); ++ ++ return count; ++} ++ ++static ssize_t gpio_sw_state_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct gpio_switch *sw = dev_get_drvdata(dev); ++ const char **str; ++ ++ str = get_sw_str(sw); ++ return sprintf(buf, "%s\n", str[sw->state]); ++} ++ ++static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, gpio_sw_state_show, ++ gpio_sw_state_store); ++ ++static ssize_t gpio_sw_type_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct gpio_switch *sw = dev_get_drvdata(dev); ++ ++ return sprintf(buf, "%s\n", get_sw_type(sw)); ++} ++ ++static DEVICE_ATTR(type, S_IRUGO, gpio_sw_type_show, NULL); ++ ++static ssize_t gpio_sw_direction_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct gpio_switch *sw = dev_get_drvdata(dev); ++ int is_output; ++ ++ is_output = sw->flags & OMAP_GPIO_SWITCH_FLAG_OUTPUT; ++ return sprintf(buf, "%s\n", is_output ? "output" : "input"); ++} ++ ++static DEVICE_ATTR(direction, S_IRUGO, gpio_sw_direction_show, NULL); ++ ++ ++static irqreturn_t gpio_sw_irq_handler(int irq, void *arg) ++{ ++ struct gpio_switch *sw = arg; ++ unsigned long timeout; ++ int state; ++ ++ if (!sw->both_edges) { ++ if (gpio_get_value(sw->gpio)) ++ set_irq_type(OMAP_GPIO_IRQ(sw->gpio), IRQ_TYPE_EDGE_FALLING); ++ else ++ set_irq_type(OMAP_GPIO_IRQ(sw->gpio), IRQ_TYPE_EDGE_RISING); ++ } ++ ++ state = gpio_sw_get_state(sw); ++ if (sw->state == state) ++ return IRQ_HANDLED; ++ ++ if (state) ++ timeout = sw->debounce_rising; ++ else ++ timeout = sw->debounce_falling; ++ if (!timeout) ++ schedule_work(&sw->work); ++ else ++ mod_timer(&sw->timer, jiffies + msecs_to_jiffies(timeout)); ++ ++ return IRQ_HANDLED; ++} ++ ++static void gpio_sw_timer(unsigned long arg) ++{ ++ struct gpio_switch *sw = (struct gpio_switch *) arg; ++ ++ schedule_work(&sw->work); ++} ++ ++static void gpio_sw_handler(struct work_struct *work) ++{ ++ struct gpio_switch *sw = container_of(work, struct gpio_switch, work); ++ int state; ++ ++ state = gpio_sw_get_state(sw); ++ if (sw->state == state) ++ return; ++ ++ sw->state = state; ++ if (sw->notify != NULL) ++ sw->notify(sw->notify_data, state); ++ sysfs_notify(&sw->pdev.dev.kobj, NULL, "state"); ++ print_sw_state(sw, state); ++} ++ ++static int __init can_do_both_edges(struct gpio_switch *sw) ++{ ++ if (!cpu_class_is_omap1()) ++ return 1; ++ if (OMAP_GPIO_IS_MPUIO(sw->gpio)) ++ return 0; ++ else ++ return 1; ++} ++ ++static void gpio_sw_release(struct device *dev) ++{ ++} ++ ++static int __init new_switch(struct gpio_switch *sw) ++{ ++ int r, direction, trigger; ++ ++ switch (sw->type) { ++ case OMAP_GPIO_SWITCH_TYPE_COVER: ++ case OMAP_GPIO_SWITCH_TYPE_CONNECTION: ++ case OMAP_GPIO_SWITCH_TYPE_ACTIVITY: ++ break; ++ default: ++ printk(KERN_ERR "invalid GPIO switch type: %d\n", sw->type); ++ return -EINVAL; ++ } ++ ++ sw->pdev.name = sw->name; ++ sw->pdev.id = -1; ++ ++ sw->pdev.dev.parent = &gpio_sw_platform_dev->dev; ++ sw->pdev.dev.driver = &gpio_sw_driver.driver; ++ sw->pdev.dev.release = gpio_sw_release; ++ ++ r = platform_device_register(&sw->pdev); ++ if (r) { ++ printk(KERN_ERR "gpio-switch: platform device registration " ++ "failed for %s", sw->name); ++ return r; ++ } ++ dev_set_drvdata(&sw->pdev.dev, sw); ++ ++ r = gpio_request(sw->gpio, "gpio-switch"); ++ if (r < 0) { ++ platform_device_unregister(&sw->pdev); ++ return r; ++ } ++ ++ /* input: 1, output: 0 */ ++ direction = !(sw->flags & OMAP_GPIO_SWITCH_FLAG_OUTPUT); ++ if (direction) ++ gpio_direction_input(sw->gpio); ++ else ++ gpio_direction_output(sw->gpio, 0); ++ ++ sw->state = gpio_sw_get_state(sw); ++ ++ r = 0; ++ r |= device_create_file(&sw->pdev.dev, &dev_attr_state); ++ r |= device_create_file(&sw->pdev.dev, &dev_attr_type); ++ r |= device_create_file(&sw->pdev.dev, &dev_attr_direction); ++ if (r) ++ printk(KERN_ERR "gpio-switch: attribute file creation " ++ "failed for %s\n", sw->name); ++ ++ if (!direction) ++ return 0; ++ ++ if (can_do_both_edges(sw)) { ++ trigger = IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING; ++ sw->both_edges = 1; ++ } else { ++ if (gpio_get_value(sw->gpio)) ++ trigger = IRQF_TRIGGER_FALLING; ++ else ++ trigger = IRQF_TRIGGER_RISING; ++ } ++ r = request_irq(OMAP_GPIO_IRQ(sw->gpio), gpio_sw_irq_handler, ++ IRQF_SHARED | trigger, sw->name, sw); ++ if (r < 0) { ++ printk(KERN_ERR "gpio-switch: request_irq() failed " ++ "for GPIO %d\n", sw->gpio); ++ platform_device_unregister(&sw->pdev); ++ gpio_free(sw->gpio); ++ return r; ++ } ++ ++ INIT_WORK(&sw->work, gpio_sw_handler); ++ init_timer(&sw->timer); ++ ++ sw->timer.function = gpio_sw_timer; ++ sw->timer.data = (unsigned long)sw; ++ ++ list_add(&sw->node, &gpio_switches); ++ ++ return 0; ++} ++ ++static int __init add_atag_switches(void) ++{ ++ const struct omap_gpio_switch_config *cfg; ++ struct gpio_switch *sw; ++ int i, r; ++ ++ for (i = 0; ; i++) { ++ cfg = omap_get_nr_config(OMAP_TAG_GPIO_SWITCH, ++ struct omap_gpio_switch_config, i); ++ if (cfg == NULL) ++ break; ++ sw = kzalloc(sizeof(*sw), GFP_KERNEL); ++ if (sw == NULL) { ++ printk(KERN_ERR "gpio-switch: kmalloc failed\n"); ++ return -ENOMEM; ++ } ++ strncpy(sw->name, cfg->name, sizeof(cfg->name)); ++ sw->gpio = cfg->gpio; ++ sw->flags = cfg->flags; ++ sw->type = cfg->type; ++ sw->debounce_rising = OMAP_GPIO_SW_DEFAULT_DEBOUNCE; ++ sw->debounce_falling = OMAP_GPIO_SW_DEFAULT_DEBOUNCE; ++ if ((r = new_switch(sw)) < 0) { ++ kfree(sw); ++ return r; ++ } ++ } ++ return 0; ++} ++ ++static struct gpio_switch * __init find_switch(int gpio, const char *name) ++{ ++ struct gpio_switch *sw; ++ ++ list_for_each_entry(sw, &gpio_switches, node) { ++ if ((gpio < 0 || sw->gpio != gpio) && ++ (name == NULL || strcmp(sw->name, name) != 0)) ++ continue; ++ ++ if (gpio < 0 || name == NULL) ++ goto no_check; ++ ++ if (strcmp(sw->name, name) != 0) ++ printk("gpio-switch: name mismatch for %d (%s, %s)\n", ++ gpio, name, sw->name); ++ else if (sw->gpio != gpio) ++ printk("gpio-switch: GPIO mismatch for %s (%d, %d)\n", ++ name, gpio, sw->gpio); ++no_check: ++ return sw; ++ } ++ return NULL; ++} ++ ++static int __init add_board_switches(void) ++{ ++ int i; ++ ++ for (i = 0; i < board_gpio_sw_count; i++) { ++ const struct omap_gpio_switch *cfg; ++ struct gpio_switch *sw; ++ int r; ++ ++ cfg = board_gpio_sw_table + i; ++ if (strlen(cfg->name) > sizeof(sw->name) - 1) ++ return -EINVAL; ++ /* Check whether we only update an existing switch ++ * or add a new switch. */ ++ sw = find_switch(cfg->gpio, cfg->name); ++ if (sw != NULL) { ++ sw->debounce_rising = cfg->debounce_rising; ++ sw->debounce_falling = cfg->debounce_falling; ++ sw->notify = cfg->notify; ++ sw->notify_data = cfg->notify_data; ++ continue; ++ } else { ++ if (cfg->gpio < 0 || cfg->name == NULL) { ++ printk("gpio-switch: required switch not " ++ "found (%d, %s)\n", cfg->gpio, ++ cfg->name); ++ continue; ++ } ++ } ++ sw = kzalloc(sizeof(*sw), GFP_KERNEL); ++ if (sw == NULL) { ++ printk(KERN_ERR "gpio-switch: kmalloc failed\n"); ++ return -ENOMEM; ++ } ++ strlcpy(sw->name, cfg->name, sizeof(sw->name)); ++ sw->gpio = cfg->gpio; ++ sw->flags = cfg->flags; ++ sw->type = cfg->type; ++ sw->debounce_rising = cfg->debounce_rising; ++ sw->debounce_falling = cfg->debounce_falling; ++ sw->notify = cfg->notify; ++ sw->notify_data = cfg->notify_data; ++ if ((r = new_switch(sw)) < 0) { ++ kfree(sw); ++ return r; ++ } ++ } ++ return 0; ++} ++ ++static void gpio_sw_cleanup(void) ++{ ++ struct gpio_switch *sw = NULL, *old = NULL; ++ ++ list_for_each_entry(sw, &gpio_switches, node) { ++ if (old != NULL) ++ kfree(old); ++ flush_scheduled_work(); ++ del_timer_sync(&sw->timer); ++ ++ free_irq(OMAP_GPIO_IRQ(sw->gpio), sw); ++ ++ device_remove_file(&sw->pdev.dev, &dev_attr_state); ++ device_remove_file(&sw->pdev.dev, &dev_attr_type); ++ device_remove_file(&sw->pdev.dev, &dev_attr_direction); ++ ++ platform_device_unregister(&sw->pdev); ++ gpio_free(sw->gpio); ++ old = sw; ++ } ++ kfree(old); ++} ++ ++static void __init report_initial_state(void) ++{ ++ struct gpio_switch *sw; ++ ++ list_for_each_entry(sw, &gpio_switches, node) { ++ int state; ++ ++ state = gpio_get_value(sw->gpio); ++ if (sw->flags & OMAP_GPIO_SWITCH_FLAG_INVERTED) ++ state = !state; ++ if (sw->notify != NULL) ++ sw->notify(sw->notify_data, state); ++ print_sw_state(sw, state); ++ } ++} ++ ++static int gpio_sw_remove(struct platform_device *dev) ++{ ++ return 0; ++} ++ ++static struct platform_driver gpio_sw_driver = { ++ .remove = gpio_sw_remove, ++ .driver = { ++ .name = "gpio-switch", ++ }, ++}; ++ ++void __init omap_register_gpio_switches(const struct omap_gpio_switch *tbl, ++ int count) ++{ ++ BUG_ON(board_gpio_sw_table != NULL); ++ ++ board_gpio_sw_table = tbl; ++ board_gpio_sw_count = count; ++} ++ ++static int __init gpio_sw_init(void) ++{ ++ int r; ++ ++ printk(KERN_INFO "OMAP GPIO switch handler initializing\n"); ++ ++ r = platform_driver_register(&gpio_sw_driver); ++ if (r) ++ return r; ++ ++ gpio_sw_platform_dev = platform_device_register_simple("gpio-switch", ++ -1, NULL, 0); ++ if (IS_ERR(gpio_sw_platform_dev)) { ++ r = PTR_ERR(gpio_sw_platform_dev); ++ goto err1; ++ } ++ ++ r = add_atag_switches(); ++ if (r < 0) ++ goto err2; ++ ++ r = add_board_switches(); ++ if (r < 0) ++ goto err2; ++ ++ report_initial_state(); ++ ++ return 0; ++err2: ++ gpio_sw_cleanup(); ++ platform_device_unregister(gpio_sw_platform_dev); ++err1: ++ platform_driver_unregister(&gpio_sw_driver); ++ return r; ++} ++ ++static void __exit gpio_sw_exit(void) ++{ ++ gpio_sw_cleanup(); ++ platform_device_unregister(gpio_sw_platform_dev); ++ platform_driver_unregister(&gpio_sw_driver); ++} ++ ++#ifndef MODULE ++late_initcall(gpio_sw_init); ++#else ++module_init(gpio_sw_init); ++#endif ++module_exit(gpio_sw_exit); ++ ++MODULE_AUTHOR("Juha Yrjölä <juha.yrjola@nokia.com>, Paul Mundt <paul.mundt@nokia.com"); ++MODULE_DESCRIPTION("GPIO switch driver"); ++MODULE_LICENSE("GPL"); +Index: linux-2.6.38-rc6/arch/arm/plat-omap/include/plat/board.h +=================================================================== +--- linux-2.6.38-rc6.orig/arch/arm/plat-omap/include/plat/board.h 2011-02-25 01:10:25.553127998 +0100 ++++ linux-2.6.38-rc6/arch/arm/plat-omap/include/plat/board.h 2011-02-25 01:11:27.301562839 +0100 +@@ -151,6 +151,14 @@ + const void *data; + }; + ++struct omap_gpio_switch_config { ++ char name[12]; ++ u16 gpio; ++ int flags:4; ++ int type:4; ++ int key_code:24; /* Linux key code */ ++}; ++ + extern const void *__omap_get_config(u16 tag, size_t len, int nr); + + #define omap_get_config(tag, type) \ diff --git a/target/linux/omap24xx/patches-2.6.38/300-nokia-board.patch b/target/linux/omap24xx/patches-2.6.38/300-nokia-board.patch new file mode 100644 index 0000000000..0a28c0d450 --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/300-nokia-board.patch @@ -0,0 +1,197 @@ +Index: linux-2.6.38-rc6/arch/arm/mach-omap2/board-n8x0.c +=================================================================== +--- linux-2.6.38-rc6.orig/arch/arm/mach-omap2/board-n8x0.c 2011-02-24 12:09:31.427080051 +0100 ++++ linux-2.6.38-rc6/arch/arm/mach-omap2/board-n8x0.c 2011-02-24 12:09:59.754956253 +0100 +@@ -15,8 +15,10 @@ + #include <linux/delay.h> + #include <linux/gpio.h> + #include <linux/init.h> ++#include <linux/irq.h> + #include <linux/io.h> + #include <linux/stddef.h> ++#include <linux/platform_device.h> + #include <linux/i2c.h> + #include <linux/spi/spi.h> + #include <linux/usb/musb.h> +@@ -33,6 +35,7 @@ + #include <plat/onenand.h> + #include <plat/mmc.h> + #include <plat/serial.h> ++#include <plat/cbus.h> + + #include "mux.h" + +@@ -194,6 +197,114 @@ + }; + #endif + ++#if defined(CONFIG_CBUS) || defined(CONFIG_CBUS_MODULE) ++ ++static struct cbus_host_platform_data n8x0_cbus_data = { ++ .clk_gpio = 66, ++ .dat_gpio = 65, ++ .sel_gpio = 64, ++}; ++ ++static struct platform_device n8x0_cbus_device = { ++ .name = "cbus", ++ .id = -1, ++ .dev = { ++ .platform_data = &n8x0_cbus_data, ++ }, ++}; ++ ++static struct resource retu_resource[] = { ++ { ++ .start = -EINVAL, /* set later */ ++ .flags = IORESOURCE_IRQ, ++ }, ++}; ++ ++static struct cbus_retu_platform_data n8x0_retu_data = { ++ .irq_base = CBUS_RETU_IRQ_BASE, ++ .irq_end = CBUS_RETU_IRQ_END, ++ .devid = CBUS_RETU_DEVICE_ID, ++}; ++ ++static struct platform_device retu_device = { ++ .name = "retu", ++ .id = -1, ++ .resource = retu_resource, ++ .num_resources = ARRAY_SIZE(retu_resource), ++ .dev = { ++ .platform_data = &n8x0_retu_data, ++ }, ++}; ++ ++static struct resource tahvo_resource[] = { ++ { ++ .start = -EINVAL, /* set later */ ++ .flags = IORESOURCE_IRQ, ++ } ++}; ++ ++static struct platform_device tahvo_device = { ++ .name = "tahvo", ++ .id = -1, ++ .resource = tahvo_resource, ++ .num_resources = ARRAY_SIZE(tahvo_resource), ++}; ++ ++static struct platform_device tahvo_usb_device = { ++ .name = "tahvo-usb", ++ .id = -1, ++}; ++ ++static void __init n8x0_cbus_init(void) ++{ ++ int ret; ++ ++ platform_device_register(&n8x0_cbus_device); ++ ++ ret = gpio_request(108, "RETU irq"); ++ if (ret < 0) { ++ pr_err("retu: Unable to reserve IRQ GPIO\n"); ++ return; ++ } ++ ++ ret = gpio_direction_input(108); ++ if (ret < 0) { ++ pr_err("retu: Unable to change gpio direction\n"); ++ gpio_free(108); ++ return; ++ } ++ ++ set_irq_type(gpio_to_irq(108), IRQ_TYPE_EDGE_RISING); ++ retu_resource[0].start = gpio_to_irq(108); ++ platform_device_register(&retu_device); ++ ++ ret = gpio_request(111, "TAHVO irq"); ++ if (ret) { ++ pr_err("tahvo: Unable to reserve IRQ GPIO\n"); ++ gpio_free(108); ++ return; ++ } ++ ++ /* Set the pin as input */ ++ ret = gpio_direction_input(111); ++ if (ret) { ++ pr_err("tahvo: Unable to change direction\n"); ++ gpio_free(108); ++ gpio_free(111); ++ return; ++ } ++ ++ tahvo_resource[0].start = gpio_to_irq(111); ++ platform_device_register(&tahvo_device); ++ platform_device_register(&tahvo_usb_device); ++} ++ ++#else ++static inline void __init n8x0_cbus_init(void) ++{ ++} ++#endif ++ + #if defined(CONFIG_MENELAUS) && \ + (defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)) + +@@ -628,11 +739,10 @@ + omap242x_map_common_io(); + } + +-static void __init n8x0_init_irq(void) ++static void __init n8x0_init_early(void) + { + omap2_init_common_infrastructure(); + omap2_init_common_devices(NULL, NULL); +- omap_init_irq(); + } + + #ifdef CONFIG_OMAP_MUX +@@ -686,6 +796,8 @@ + static void __init n8x0_init_machine(void) + { + omap2420_mux_init(board_mux, OMAP_PACKAGE_ZAC); ++ n8x0_cbus_init(); ++ + /* FIXME: add n810 spi devices */ + spi_register_board_info(n800_spi_board_info, + ARRAY_SIZE(n800_spi_board_info)); +@@ -703,27 +815,30 @@ + + MACHINE_START(NOKIA_N800, "Nokia N800") + .boot_params = 0x80000100, +- .map_io = n8x0_map_io, + .reserve = omap_reserve, +- .init_irq = n8x0_init_irq, ++ .map_io = n8x0_map_io, ++ .init_early = n8x0_init_early, ++ .init_irq = omap_init_irq, + .init_machine = n8x0_init_machine, + .timer = &omap_timer, + MACHINE_END + + MACHINE_START(NOKIA_N810, "Nokia N810") + .boot_params = 0x80000100, +- .map_io = n8x0_map_io, + .reserve = omap_reserve, +- .init_irq = n8x0_init_irq, ++ .map_io = n8x0_map_io, ++ .init_early = n8x0_init_early, ++ .init_irq = omap_init_irq, + .init_machine = n8x0_init_machine, + .timer = &omap_timer, + MACHINE_END + + MACHINE_START(NOKIA_N810_WIMAX, "Nokia N810 WiMAX") + .boot_params = 0x80000100, +- .map_io = n8x0_map_io, + .reserve = omap_reserve, +- .init_irq = n8x0_init_irq, ++ .map_io = n8x0_map_io, ++ .init_early = n8x0_init_early, ++ .init_irq = omap_init_irq, + .init_machine = n8x0_init_machine, + .timer = &omap_timer, + MACHINE_END diff --git a/target/linux/omap24xx/patches-2.6.38/301-nokia-board-additional.patch b/target/linux/omap24xx/patches-2.6.38/301-nokia-board-additional.patch new file mode 100644 index 0000000000..eed4d5aa89 --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/301-nokia-board-additional.patch @@ -0,0 +1,523 @@ +Index: linux-2.6.38-rc6/arch/arm/mach-omap2/board-n8x0.c +=================================================================== +--- linux-2.6.38-rc6.orig/arch/arm/mach-omap2/board-n8x0.c 2011-02-25 01:36:43.691841133 +0100 ++++ linux-2.6.38-rc6/arch/arm/mach-omap2/board-n8x0.c 2011-02-25 01:38:19.129482731 +0100 +@@ -23,6 +23,9 @@ + #include <linux/spi/spi.h> + #include <linux/usb/musb.h> + #include <sound/tlv320aic3x.h> ++#include <linux/input.h> ++#include <linux/i2c/lm8323.h> ++#include <linux/spi/tsc2005.h> + + #include <asm/mach/arch.h> + #include <asm/mach-types.h> +@@ -36,6 +39,7 @@ + #include <plat/mmc.h> + #include <plat/serial.h> + #include <plat/cbus.h> ++#include <plat/gpio-switch.h> + + #include "mux.h" + +@@ -43,6 +47,221 @@ + static int slot2_cover_open; + static struct device *mmc_device; + ++/* We map the FN key as LALT to workaround an X keycode problem. ++ * The XKB map needs to be adjusted to support this. */ ++#define MAP_FN_AS_LEFTALT ++ ++static s16 rx44_keymap[LM8323_KEYMAP_SIZE] = { ++ [0x01] = KEY_Q, ++ [0x02] = KEY_K, ++ [0x03] = KEY_O, ++ [0x04] = KEY_P, ++ [0x05] = KEY_BACKSPACE, ++ [0x06] = KEY_A, ++ [0x07] = KEY_S, ++ [0x08] = KEY_D, ++ [0x09] = KEY_F, ++ [0x0a] = KEY_G, ++ [0x0b] = KEY_H, ++ [0x0c] = KEY_J, ++ ++ [0x11] = KEY_W, ++ [0x12] = KEY_F4, ++ [0x13] = KEY_L, ++ [0x14] = KEY_APOSTROPHE, ++ [0x16] = KEY_Z, ++ [0x17] = KEY_X, ++ [0x18] = KEY_C, ++ [0x19] = KEY_V, ++ [0x1a] = KEY_B, ++ [0x1b] = KEY_N, ++ [0x1c] = KEY_LEFTSHIFT, /* Actually, this is both shift keys */ ++ [0x1f] = KEY_F7, ++ ++ [0x21] = KEY_E, ++ [0x22] = KEY_SEMICOLON, ++ [0x23] = KEY_MINUS, ++ [0x24] = KEY_EQUAL, ++#ifdef MAP_FN_AS_LEFTALT ++ [0x2b] = KEY_LEFTALT, ++#else ++ [0x2b] = KEY_FN, ++#endif ++ [0x2c] = KEY_M, ++ [0x2f] = KEY_F8, ++ ++ [0x31] = KEY_R, ++ [0x32] = KEY_RIGHTCTRL, ++ [0x34] = KEY_SPACE, ++ [0x35] = KEY_COMMA, ++ [0x37] = KEY_UP, ++ [0x3c] = KEY_COMPOSE, ++ [0x3f] = KEY_F6, ++ ++ [0x41] = KEY_T, ++ [0x44] = KEY_DOT, ++ [0x46] = KEY_RIGHT, ++ [0x4f] = KEY_F5, ++ [0x51] = KEY_Y, ++ [0x53] = KEY_DOWN, ++ [0x55] = KEY_ENTER, ++ [0x5f] = KEY_ESC, ++ ++ [0x61] = KEY_U, ++ [0x64] = KEY_LEFT, ++ ++ [0x71] = KEY_I, ++ [0x75] = KEY_KPENTER, ++}; ++ ++static struct lm8323_platform_data lm8323_pdata = { ++ .repeat = 0, /* Repeat is handled in userspace for now. */ ++ .keymap = rx44_keymap, ++ .size_x = 8, ++ .size_y = 12, ++ .debounce_time = 12, ++ .active_time = 500, ++ ++ .name = "Internal keyboard", ++ .pwm_names[0] = "n810::keyboard", ++ .pwm_names[1] = "n810::cover", ++}; ++ ++#define OMAP_TAG_NOKIA_BT 0x4e01 ++ ++struct omap_bluetooth_config { ++ u8 chip_type; ++ u8 bt_wakeup_gpio; ++ u8 host_wakeup_gpio; ++ u8 reset_gpio; ++ u8 bt_uart; ++ u8 bd_addr[6]; ++ u8 bt_sysclk; ++}; ++ ++static struct platform_device n8x0_bt_device = { ++ .name = "hci_h4p", ++ .id = -1, ++ .num_resources = 0, ++}; ++ ++void __init n8x0_bt_init(void) ++{ ++ const struct omap_bluetooth_config *bt_config; ++ ++ bt_config = (void *) omap_get_config(OMAP_TAG_NOKIA_BT, ++ struct omap_bluetooth_config); ++ n8x0_bt_device.dev.platform_data = (void *) bt_config; ++ if (platform_device_register(&n8x0_bt_device) < 0) ++ BUG(); ++} ++ ++#define RX51_TSC2005_RESET_GPIO 94 ++#define RX51_TSC2005_IRQ_GPIO 106 ++ ++#ifdef CONFIG_TOUCHSCREEN_TSC2005 ++static struct tsc2005_platform_data tsc2005_config; ++static void rx51_tsc2005_set_reset(bool enable) ++{ ++ gpio_set_value(RX51_TSC2005_RESET_GPIO, enable); ++} ++ ++static struct omap2_mcspi_device_config tsc2005_mcspi_config = { ++ .turbo_mode = 0, ++ .single_channel = 1, ++}; ++#endif ++ ++static void __init tsc2005_set_config(void) ++{ ++ const struct omap_lcd_config *conf; ++ ++ conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config); ++ if (conf != NULL) { ++#ifdef CONFIG_TOUCHSCREEN_TSC2005 ++ if (strcmp(conf->panel_name, "lph8923") == 0) { ++ tsc2005_config.ts_x_plate_ohm = 180; ++ tsc2005_config.ts_hw_avg = 0; ++ tsc2005_config.ts_ignore_last = 0; ++ tsc2005_config.ts_touch_pressure = 1500; ++ tsc2005_config.ts_stab_time = 100; ++ tsc2005_config.ts_pressure_max = 2048; ++ tsc2005_config.ts_pressure_fudge = 2; ++ tsc2005_config.ts_x_max = 4096; ++ tsc2005_config.ts_x_fudge = 4; ++ tsc2005_config.ts_y_max = 4096; ++ tsc2005_config.ts_y_fudge = 7; ++ tsc2005_config.set_reset = rx51_tsc2005_set_reset; ++ } else if (strcmp(conf->panel_name, "ls041y3") == 0) { ++ tsc2005_config.ts_x_plate_ohm = 280; ++ tsc2005_config.ts_hw_avg = 0; ++ tsc2005_config.ts_ignore_last = 0; ++ tsc2005_config.ts_touch_pressure = 1500; ++ tsc2005_config.ts_stab_time = 1000; ++ tsc2005_config.ts_pressure_max = 2048; ++ tsc2005_config.ts_pressure_fudge = 2; ++ tsc2005_config.ts_x_max = 4096; ++ tsc2005_config.ts_x_fudge = 4; ++ tsc2005_config.ts_y_max = 4096; ++ tsc2005_config.ts_y_fudge = 7; ++ tsc2005_config.set_reset = rx51_tsc2005_set_reset; ++ } else { ++ printk(KERN_ERR "Unknown panel type, set default " ++ "touchscreen configuration\n"); ++ tsc2005_config.ts_x_plate_ohm = 200; ++ tsc2005_config.ts_stab_time = 100; ++ } ++#endif ++ } ++} ++ ++static struct omap2_mcspi_device_config mipid_mcspi_config = { ++ .turbo_mode = 0, ++ .single_channel = 1, ++}; ++ ++extern struct mipid_platform_data n8x0_mipid_platform_data; ++ ++extern void n8x0_mipid_init(void); ++extern void n8x0_blizzard_init(void); ++ ++static struct omap_gpio_switch n8x0_gpio_switches[] __initdata = { ++ { ++ .name = "headphone", ++ .gpio = -1, ++ .debounce_rising = 200, ++ .debounce_falling = 200, ++ }, { ++ .name = "cam_act", ++ .gpio = -1, ++ .debounce_rising = 200, ++ .debounce_falling = 200, ++ }, { ++ .name = "cam_turn", ++ .gpio = -1, ++ .debounce_rising = 100, ++ .debounce_falling = 100, ++ }, { ++ .name = "slide", ++ .gpio = -1, ++ .debounce_rising = 200, ++ .debounce_falling = 200, ++ }, { ++ .name = "kb_lock", ++ .gpio = -1, ++ .debounce_rising = 200, ++ .debounce_falling = 200, ++ }, ++}; ++ ++static void __init n8x0_gpio_switches_init(void) ++{ ++ /* The switches are actually registered through ATAG mechanism. ++ * This just updates the parameters (thus .gpio is -1) */ ++ omap_register_gpio_switches(n8x0_gpio_switches, ++ ARRAY_SIZE(n8x0_gpio_switches)); ++} ++ + #define TUSB6010_ASYNC_CS 1 + #define TUSB6010_SYNC_CS 4 + #define TUSB6010_GPIO_INT 58 +@@ -146,12 +365,29 @@ + + static struct spi_board_info n800_spi_board_info[] __initdata = { + { ++ .modalias = "lcd_mipid", ++ .bus_num = 1, ++ .chip_select = 1, ++ .max_speed_hz = 4000000, ++ .controller_data= &mipid_mcspi_config, ++ .platform_data = &n8x0_mipid_platform_data, ++ }, ++ { + .modalias = "p54spi", + .bus_num = 2, + .chip_select = 0, + .max_speed_hz = 48000000, + .controller_data = &p54spi_mcspi_config, + }, ++ { ++ .modalias = "tsc2005", ++ .bus_num = 3, ++ .chip_select = 0, ++ .irq = OMAP_GPIO_IRQ(RX51_TSC2005_IRQ_GPIO), ++ .max_speed_hz = 6000000, ++ .controller_data = &tsc2005_mcspi_config, ++ .platform_data = &tsc2005_config, ++ }, + }; + + #if defined(CONFIG_MTD_ONENAND_OMAP2) || \ +@@ -727,6 +963,11 @@ + }; + + static struct i2c_board_info n810_i2c_board_info_2[] __initdata = { ++ { ++ I2C_BOARD_INFO("lm8323", 0x45), ++ .irq = OMAP_GPIO_IRQ(109), ++ .platform_data = &lm8323_pdata, ++ }, + { + I2C_BOARD_INFO("tlv320aic3x", 0x18), + .platform_data = &n810_aic33_data, +@@ -796,9 +1037,12 @@ + static void __init n8x0_init_machine(void) + { + omap2420_mux_init(board_mux, OMAP_PACKAGE_ZAC); ++ n8x0_gpio_switches_init(); + n8x0_cbus_init(); ++ n8x0_bt_init(); + + /* FIXME: add n810 spi devices */ ++ tsc2005_set_config(); + spi_register_board_info(n800_spi_board_info, + ARRAY_SIZE(n800_spi_board_info)); + omap_register_i2c_bus(1, 400, n8x0_i2c_board_info_1, +@@ -808,6 +1052,8 @@ + i2c_register_board_info(2, n810_i2c_board_info_2, + ARRAY_SIZE(n810_i2c_board_info_2)); + board_serial_init(); ++ n8x0_mipid_init(); ++ n8x0_blizzard_init(); + gpmc_onenand_init(board_onenand_data); + n8x0_mmc_init(); + n8x0_usb_init(); +Index: linux-2.6.38-rc6/arch/arm/mach-omap2/board-n8x0-lcd.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/arch/arm/mach-omap2/board-n8x0-lcd.c 2011-02-25 01:36:43.715837271 +0100 +@@ -0,0 +1,127 @@ ++/* ++ * linux/arch/arm/mach-omap2/board-n8x0.c ++ * ++ * Copyright (C) 2005-2009 Nokia Corporation ++ * Author: Juha Yrjola <juha.yrjola@nokia.com> ++ * ++ * Modified from mach-omap2/board-generic.c ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++#include <linux/clk.h> ++#include <linux/delay.h> ++#include <linux/gpio.h> ++#include <linux/omapfb.h> ++ ++#include <plat/lcd_mipid.h> ++#include <plat/blizzard.h> ++ ++#include <../drivers/cbus/tahvo.h> ++ ++#define N8X0_BLIZZARD_POWERDOWN_GPIO 15 ++ ++// MIPID LCD Panel ++ ++static void mipid_shutdown(struct mipid_platform_data *pdata) ++{ ++ if (pdata->nreset_gpio != -1) { ++ pr_info("shutdown LCD\n"); ++ gpio_set_value(pdata->nreset_gpio, 0); ++ msleep(120); ++ } ++} ++ ++struct mipid_platform_data n8x0_mipid_platform_data = { ++ .shutdown = mipid_shutdown, ++}; ++ ++void __init n8x0_mipid_init(void) ++{ ++ const struct omap_lcd_config *conf; ++ ++ conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config); ++ if (conf != NULL) { ++ n8x0_mipid_platform_data.nreset_gpio = conf->nreset_gpio; ++ n8x0_mipid_platform_data.data_lines = conf->data_lines; ++ printk(KERN_INFO "N8x0 MIPID config loaded"); ++ } ++ else ++ printk(KERN_INFO "N8x0 MIPID config not provided"); ++} ++ ++ ++// Epson Blizzard LCD Controller ++ ++static struct { ++ struct clk *sys_ck; ++} blizzard; ++ ++static int blizzard_get_clocks(void) ++{ ++ blizzard.sys_ck = clk_get(0, "osc_ck"); ++ if (IS_ERR(blizzard.sys_ck)) { ++ printk(KERN_ERR "can't get Blizzard clock\n"); ++ return PTR_ERR(blizzard.sys_ck); ++ } ++ return 0; ++} ++ ++static unsigned long blizzard_get_clock_rate(struct device *dev) ++{ ++ return clk_get_rate(blizzard.sys_ck); ++} ++ ++static void blizzard_enable_clocks(int enable) ++{ ++ if (enable) ++ clk_enable(blizzard.sys_ck); ++ else ++ clk_disable(blizzard.sys_ck); ++} ++ ++static void blizzard_power_up(struct device *dev) ++{ ++ /* Vcore to 1.475V */ ++ tahvo_set_clear_reg_bits(0x07, 0, 0xf); ++ msleep(10); ++ ++ blizzard_enable_clocks(1); ++ gpio_set_value(N8X0_BLIZZARD_POWERDOWN_GPIO, 1); ++} ++ ++static void blizzard_power_down(struct device *dev) ++{ ++ gpio_set_value(N8X0_BLIZZARD_POWERDOWN_GPIO, 0); ++ blizzard_enable_clocks(0); ++ ++ /* Vcore to 1.005V */ ++ tahvo_set_clear_reg_bits(0x07, 0xf, 0); ++} ++ ++static struct blizzard_platform_data n8x0_blizzard_data = { ++ .power_up = blizzard_power_up, ++ .power_down = blizzard_power_down, ++ .get_clock_rate = blizzard_get_clock_rate, ++ .te_connected = 1, ++}; ++ ++void __init n8x0_blizzard_init(void) ++{ ++ int r; ++ ++ r = gpio_request(N8X0_BLIZZARD_POWERDOWN_GPIO, "Blizzard pd"); ++ if (r < 0) ++ { ++ printk(KERN_ERR "Can't get N8x0 Blizzard powerdown GPIO %d\n", N8X0_BLIZZARD_POWERDOWN_GPIO); ++ return; ++ } ++ gpio_direction_output(N8X0_BLIZZARD_POWERDOWN_GPIO, 1); ++ ++ blizzard_get_clocks(); ++ omapfb_set_ctrl_platform_data(&n8x0_blizzard_data); ++ ++ printk(KERN_INFO "N8x0 Blizzard initialized"); ++} +Index: linux-2.6.38-rc6/arch/arm/mach-omap2/Makefile +=================================================================== +--- linux-2.6.38-rc6.orig/arch/arm/mach-omap2/Makefile 2011-02-25 01:36:11.764976272 +0100 ++++ linux-2.6.38-rc6/arch/arm/mach-omap2/Makefile 2011-02-25 01:36:43.715837271 +0100 +@@ -177,6 +177,7 @@ + hsmmc.o \ + board-flash.o + obj-$(CONFIG_MACH_NOKIA_N8X0) += board-n8x0.o ++obj-$(CONFIG_MACH_NOKIA_N8X0) += board-n8x0-lcd.o + obj-$(CONFIG_MACH_NOKIA_RM680) += board-rm680.o \ + sdram-nokia.o \ + hsmmc.o +Index: linux-2.6.38-rc6/arch/arm/plat-omap/include/plat/cbus.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/arch/arm/plat-omap/include/plat/cbus.h 2011-02-25 01:36:43.716837110 +0100 +@@ -0,0 +1,40 @@ ++/* ++ * cbus.h - CBUS platform_data definition ++ * ++ * Copyright (C) 2004 - 2009 Nokia Corporation ++ * ++ * Written by Felipe Balbi <felipe.balbi@nokia.com> ++ * ++ * This file is subject to the terms and conditions of the GNU General ++ * Public License. See the file "COPYING" in the main directory of this ++ * archive for more details. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ */ ++ ++#ifndef __PLAT_CBUS_H ++#define __PLAT_CBUS_H ++ ++#define CBUS_RETU_DEVICE_ID 0x01 ++#define CBUS_TAHVO_DEVICE_ID 0x02 ++ ++struct cbus_host_platform_data { ++ int dat_gpio; ++ int clk_gpio; ++ int sel_gpio; ++}; ++ ++struct cbus_retu_platform_data { ++ int irq_base; ++ int irq_end; ++ int devid; ++}; ++ ++#endif /* __PLAT_CBUS_H */ +Index: linux-2.6.38-rc6/arch/arm/plat-omap/include/plat/irqs.h +=================================================================== +--- linux-2.6.38-rc6.orig/arch/arm/plat-omap/include/plat/irqs.h 2011-02-25 01:36:11.794971452 +0100 ++++ linux-2.6.38-rc6/arch/arm/plat-omap/include/plat/irqs.h 2011-02-25 01:36:43.716837110 +0100 +@@ -411,7 +411,20 @@ + #define TWL_IRQ_END TWL6030_IRQ_END + #endif + +-#define NR_IRQS TWL_IRQ_END ++/* GPMC related */ ++#define OMAP_GPMC_IRQ_BASE (TWL_IRQ_END) ++#define OMAP_GPMC_NR_IRQS 7 ++#define OMAP_GPMC_IRQ_END (OMAP_GPMC_IRQ_BASE + OMAP_GPMC_NR_IRQS) ++ ++#define CBUS_RETU_IRQ_BASE OMAP_GPMC_IRQ_END ++#ifdef CONFIG_CBUS_RETU ++#define CBUS_RETU_NR_IRQS 16 ++#else ++#define CBUS_RETU_NR_IRQS 0 ++#endif ++#define CBUS_RETU_IRQ_END (CBUS_RETU_IRQ_BASE + CBUS_RETU_NR_IRQS) ++ ++#define NR_IRQS CBUS_RETU_IRQ_END + + #define OMAP_IRQ_BIT(irq) (1 << ((irq) % 32)) + diff --git a/target/linux/omap24xx/patches-2.6.38/310-n8x0-gpioswitch-input.patch b/target/linux/omap24xx/patches-2.6.38/310-n8x0-gpioswitch-input.patch new file mode 100644 index 0000000000..ea41babc6f --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/310-n8x0-gpioswitch-input.patch @@ -0,0 +1,100 @@ +--- + arch/arm/mach-omap2/board-n8x0.c | 73 +++++++++++++++++++++++++++++++++++++++ + 1 file changed, 73 insertions(+) + +Index: linux-2.6.38-rc6/arch/arm/mach-omap2/board-n8x0.c +=================================================================== +--- linux-2.6.38-rc6.orig/arch/arm/mach-omap2/board-n8x0.c 2011-02-24 12:53:05.134457636 +0100 ++++ linux-2.6.38-rc6/arch/arm/mach-omap2/board-n8x0.c 2011-02-24 12:55:54.570320630 +0100 +@@ -225,6 +225,77 @@ + extern void n8x0_mipid_init(void); + extern void n8x0_blizzard_init(void); + ++struct gpio_switch_input_dev { ++ struct input_dev *idev; ++ unsigned int swcode; ++}; ++ ++static struct gpio_switch_input_dev *slide_input; ++static struct gpio_switch_input_dev *kblock_input; ++ ++static void n8x0_gpio_switch_input_notify(struct gpio_switch_input_dev *gdev, ++ int state) ++{ ++ if (gdev) { ++ input_report_switch(gdev->idev, gdev->swcode, state); ++ input_sync(gdev->idev); ++ } ++} ++ ++static void n8x0_slide_notify(void *data, int state) ++{ ++ n8x0_gpio_switch_input_notify(slide_input, state); ++} ++ ++static void n8x0_kb_lock_notify(void *data, int state) ++{ ++ n8x0_gpio_switch_input_notify(kblock_input, state); ++} ++ ++static struct gpio_switch_input_dev * __init gpioswitch_input_init( ++ const char *name, ++ unsigned int swcode) ++{ ++ struct gpio_switch_input_dev *gdev; ++ int err; ++ ++ gdev = kzalloc(sizeof(*gdev), GFP_KERNEL); ++ if (!gdev) ++ goto error; ++ gdev->swcode = swcode; ++ ++ gdev->idev = input_allocate_device(); ++ if (!gdev->idev) ++ goto err_free; ++ ++ gdev->idev->evbit[0] = BIT_MASK(EV_SW); ++ gdev->idev->swbit[BIT_WORD(swcode)] = BIT_MASK(swcode); ++ gdev->idev->name = name; ++ ++ err = input_register_device(gdev->idev); ++ if (err) ++ goto err_free_idev; ++ ++ return gdev; ++ ++err_free_idev: ++ input_free_device(gdev->idev); ++err_free: ++ kfree(gdev); ++error: ++ return NULL; ++} ++ ++static int __init n8x0_gpio_switches_input_init(void) ++{ ++ slide_input = gpioswitch_input_init("slide", SW_KEYPAD_SLIDE); ++ kblock_input = gpioswitch_input_init("kb_lock", SW_LID); ++ if (WARN_ON(!slide_input || !kblock_input)) ++ return -ENODEV; ++ return 0; ++} ++late_initcall(n8x0_gpio_switches_input_init); ++ + static struct omap_gpio_switch n8x0_gpio_switches[] __initdata = { + { + .name = "headphone", +@@ -246,11 +317,13 @@ + .gpio = -1, + .debounce_rising = 200, + .debounce_falling = 200, ++ .notify = n8x0_slide_notify, + }, { + .name = "kb_lock", + .gpio = -1, + .debounce_rising = 200, + .debounce_falling = 200, ++ .notify = n8x0_kb_lock_notify, + }, + }; + diff --git a/target/linux/omap24xx/patches-2.6.38/400-bluetooth-hci_h4p.patch b/target/linux/omap24xx/patches-2.6.38/400-bluetooth-hci_h4p.patch new file mode 100644 index 0000000000..98ecc0e6af --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/400-bluetooth-hci_h4p.patch @@ -0,0 +1,1966 @@ +--- + drivers/bluetooth/Kconfig | 10 + drivers/bluetooth/Makefile | 1 + drivers/bluetooth/hci_h4p/Makefile | 7 + drivers/bluetooth/hci_h4p/core.c | 1043 ++++++++++++++++++++++++++++++++++++ + drivers/bluetooth/hci_h4p/fw-csr.c | 149 +++++ + drivers/bluetooth/hci_h4p/fw-ti.c | 90 +++ + drivers/bluetooth/hci_h4p/fw.c | 155 +++++ + drivers/bluetooth/hci_h4p/hci_h4p.h | 183 ++++++ + drivers/bluetooth/hci_h4p/sysfs.c | 84 ++ + drivers/bluetooth/hci_h4p/uart.c | 169 +++++ + 10 files changed, 1891 insertions(+) + +Index: linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/core.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/core.c 2010-11-05 17:04:44.762000001 +0100 +@@ -0,0 +1,1043 @@ ++/* ++ * This file is part of hci_h4p bluetooth driver ++ * ++ * Copyright (C) 2005, 2006 Nokia Corporation. ++ * ++ * Contact: Ville Tervo <ville.tervo@nokia.com> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, but ++ * WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ++ * General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA ++ * 02110-1301 USA ++ * ++ */ ++ ++#include <linux/module.h> ++ ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/errno.h> ++#include <linux/delay.h> ++#include <linux/spinlock.h> ++#include <linux/serial_reg.h> ++#include <linux/skbuff.h> ++#include <linux/timer.h> ++#include <linux/device.h> ++#include <linux/platform_device.h> ++#include <linux/clk.h> ++#include <linux/gpio.h> ++ ++#include <mach/hardware.h> ++#include <mach/board.h> ++#include <mach/irqs.h> ++#include <plat/serial.h> ++ ++#include <net/bluetooth/bluetooth.h> ++#include <net/bluetooth/hci_core.h> ++#include <net/bluetooth/hci.h> ++ ++#include "hci_h4p.h" ++ ++#define PM_TIMEOUT 200 ++ ++struct omap_bluetooth_config { ++ u8 chip_type; ++ u8 bt_wakeup_gpio; ++ u8 host_wakeup_gpio; ++ u8 reset_gpio; ++ u8 bt_uart; ++ u8 bd_addr[6]; ++ u8 bt_sysclk; ++}; ++ ++/* This should be used in function that cannot release clocks */ ++static void hci_h4p_set_clk(struct hci_h4p_info *info, int *clock, int enable) ++{ ++ unsigned long flags; ++ ++ spin_lock_irqsave(&info->clocks_lock, flags); ++ if (enable && !*clock) { ++ NBT_DBG_POWER("Enabling %p\n", clock); ++ clk_enable(info->uart_fclk); ++#ifdef CONFIG_ARCH_OMAP2 ++ if (cpu_is_omap24xx()) { ++ clk_enable(info->uart_iclk); ++ //omap2_block_sleep(); ++ } ++#endif ++ } ++ if (!enable && *clock) { ++ NBT_DBG_POWER("Disabling %p\n", clock); ++ clk_disable(info->uart_fclk); ++#ifdef CONFIG_ARCH_OMAP2 ++ if (cpu_is_omap24xx()) { ++ clk_disable(info->uart_iclk); ++ //omap2_allow_sleep(); ++ } ++#endif ++ } ++ ++ *clock = enable; ++ spin_unlock_irqrestore(&info->clocks_lock, flags); ++} ++ ++/* Power management functions */ ++static void hci_h4p_disable_tx(struct hci_h4p_info *info) ++{ ++ NBT_DBG_POWER("\n"); ++ ++ if (!info->pm_enabled) ++ return; ++ ++ mod_timer(&info->tx_pm_timer, jiffies + msecs_to_jiffies(PM_TIMEOUT)); ++} ++ ++static void hci_h4p_enable_tx(struct hci_h4p_info *info) ++{ ++ NBT_DBG_POWER("\n"); ++ ++ if (!info->pm_enabled) ++ return; ++ ++ del_timer_sync(&info->tx_pm_timer); ++ if (info->tx_pm_enabled) { ++ info->tx_pm_enabled = 0; ++ hci_h4p_set_clk(info, &info->tx_clocks_en, 1); ++ gpio_set_value(info->bt_wakeup_gpio, 1); ++ } ++} ++ ++static void hci_h4p_tx_pm_timer(unsigned long data) ++{ ++ struct hci_h4p_info *info; ++ ++ NBT_DBG_POWER("\n"); ++ ++ info = (struct hci_h4p_info *)data; ++ ++ if (hci_h4p_inb(info, UART_LSR) & UART_LSR_TEMT) { ++ gpio_set_value(info->bt_wakeup_gpio, 0); ++ hci_h4p_set_clk(info, &info->tx_clocks_en, 0); ++ info->tx_pm_enabled = 1; ++ } ++ else { ++ mod_timer(&info->tx_pm_timer, jiffies + msecs_to_jiffies(PM_TIMEOUT)); ++ } ++} ++ ++static void hci_h4p_disable_rx(struct hci_h4p_info *info) ++{ ++ if (!info->pm_enabled) ++ return; ++ ++ mod_timer(&info->rx_pm_timer, jiffies + msecs_to_jiffies(PM_TIMEOUT)); ++} ++ ++static void hci_h4p_enable_rx(struct hci_h4p_info *info) ++{ ++ unsigned long flags; ++ ++ if (!info->pm_enabled) ++ return; ++ ++ del_timer_sync(&info->rx_pm_timer); ++ spin_lock_irqsave(&info->lock, flags); ++ if (info->rx_pm_enabled) { ++ hci_h4p_set_clk(info, &info->rx_clocks_en, 1); ++ hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) | UART_IER_RDI); ++ __hci_h4p_set_auto_ctsrts(info, 1, UART_EFR_RTS); ++ info->rx_pm_enabled = 0; ++ } ++ spin_unlock_irqrestore(&info->lock, flags); ++} ++ ++static void hci_h4p_rx_pm_timer(unsigned long data) ++{ ++ unsigned long flags; ++ struct hci_h4p_info *info = (struct hci_h4p_info *)data; ++ ++ spin_lock_irqsave(&info->lock, flags); ++ if (!(hci_h4p_inb(info, UART_LSR) & UART_LSR_DR)) { ++ __hci_h4p_set_auto_ctsrts(info, 0, UART_EFR_RTS); ++ hci_h4p_set_rts(info, 0); ++ hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) & ~UART_IER_RDI); ++ hci_h4p_set_clk(info, &info->rx_clocks_en, 0); ++ info->rx_pm_enabled = 1; ++ } ++ else { ++ mod_timer(&info->rx_pm_timer, jiffies + msecs_to_jiffies(PM_TIMEOUT)); ++ } ++ spin_unlock_irqrestore(&info->lock, flags); ++} ++ ++/* Negotiation functions */ ++int hci_h4p_send_alive_packet(struct hci_h4p_info *info) ++{ ++ NBT_DBG("Sending alive packet\n"); ++ ++ if (!info->alive_cmd_skb) ++ return -EINVAL; ++ ++ /* Keep reference to buffer so we can reuse it */ ++ info->alive_cmd_skb = skb_get(info->alive_cmd_skb); ++ ++ skb_queue_tail(&info->txq, info->alive_cmd_skb); ++ tasklet_schedule(&info->tx_task); ++ ++ NBT_DBG("Alive packet sent\n"); ++ ++ return 0; ++} ++ ++static void hci_h4p_alive_packet(struct hci_h4p_info *info, struct sk_buff *skb) ++{ ++ NBT_DBG("Received alive packet\n"); ++ if (skb->data[1] == 0xCC) { ++ complete(&info->init_completion); ++ } ++ ++ kfree_skb(skb); ++} ++ ++static int hci_h4p_send_negotiation(struct hci_h4p_info *info, struct sk_buff *skb) ++{ ++ NBT_DBG("Sending negotiation..\n"); ++ ++ hci_h4p_change_speed(info, INIT_SPEED); ++ ++ info->init_error = 0; ++ init_completion(&info->init_completion); ++ skb_queue_tail(&info->txq, skb); ++ tasklet_schedule(&info->tx_task); ++ ++ if (!wait_for_completion_interruptible_timeout(&info->init_completion, ++ msecs_to_jiffies(1000))) ++ return -ETIMEDOUT; ++ ++ NBT_DBG("Negotiation sent\n"); ++ return info->init_error; ++} ++ ++static void hci_h4p_negotiation_packet(struct hci_h4p_info *info, ++ struct sk_buff *skb) ++{ ++ int err = 0; ++ ++ if (skb->data[1] == 0x20) { ++ /* Change to operational settings */ ++ hci_h4p_set_rts(info, 0); ++ ++ err = hci_h4p_wait_for_cts(info, 0, 100); ++ if (err < 0) ++ goto neg_ret; ++ ++ hci_h4p_change_speed(info, MAX_BAUD_RATE); ++ ++ err = hci_h4p_wait_for_cts(info, 1, 100); ++ if (err < 0) ++ goto neg_ret; ++ ++ hci_h4p_set_auto_ctsrts(info, 1, UART_EFR_CTS | UART_EFR_RTS); ++ ++ err = hci_h4p_send_alive_packet(info); ++ if (err < 0) ++ goto neg_ret; ++ } else { ++ dev_err(info->dev, "Could not negotiate hci_h4p settings\n"); ++ err = -EINVAL; ++ goto neg_ret; ++ } ++ ++ kfree_skb(skb); ++ return; ++ ++neg_ret: ++ info->init_error = err; ++ complete(&info->init_completion); ++ kfree_skb(skb); ++} ++ ++/* H4 packet handling functions */ ++static int hci_h4p_get_hdr_len(struct hci_h4p_info *info, u8 pkt_type) ++{ ++ long retval; ++ ++ switch (pkt_type) { ++ case H4_EVT_PKT: ++ retval = HCI_EVENT_HDR_SIZE; ++ break; ++ case H4_ACL_PKT: ++ retval = HCI_ACL_HDR_SIZE; ++ break; ++ case H4_SCO_PKT: ++ retval = HCI_SCO_HDR_SIZE; ++ break; ++ case H4_NEG_PKT: ++ retval = 11; ++ break; ++ case H4_ALIVE_PKT: ++ retval = 3; ++ break; ++ default: ++ dev_err(info->dev, "Unknown H4 packet type 0x%.2x\n", pkt_type); ++ retval = -1; ++ break; ++ } ++ ++ return retval; ++} ++ ++static unsigned int hci_h4p_get_data_len(struct hci_h4p_info *info, ++ struct sk_buff *skb) ++{ ++ long retval = -1; ++ struct hci_event_hdr *evt_hdr; ++ struct hci_acl_hdr *acl_hdr; ++ struct hci_sco_hdr *sco_hdr; ++ ++ switch (bt_cb(skb)->pkt_type) { ++ case H4_EVT_PKT: ++ evt_hdr = (struct hci_event_hdr *)skb->data; ++ retval = evt_hdr->plen; ++ break; ++ case H4_ACL_PKT: ++ acl_hdr = (struct hci_acl_hdr *)skb->data; ++ retval = le16_to_cpu(acl_hdr->dlen); ++ break; ++ case H4_SCO_PKT: ++ sco_hdr = (struct hci_sco_hdr *)skb->data; ++ retval = sco_hdr->dlen; ++ break; ++ case H4_NEG_PKT: ++ retval = 0; ++ break; ++ case H4_ALIVE_PKT: ++ retval = 0; ++ break; ++ } ++ ++ return retval; ++} ++ ++static inline void hci_h4p_recv_frame(struct hci_h4p_info *info, ++ struct sk_buff *skb) ++{ ++ ++ if (unlikely(!test_bit(HCI_RUNNING, &info->hdev->flags))) { ++ NBT_DBG("fw_event\n"); ++ hci_h4p_parse_fw_event(info, skb); ++ } else { ++ hci_recv_frame(skb); ++ NBT_DBG("Frame sent to upper layer\n"); ++ } ++} ++ ++static void hci_h4p_rx_tasklet(unsigned long data) ++{ ++ u8 byte; ++ unsigned long flags; ++ struct hci_h4p_info *info = (struct hci_h4p_info *)data; ++ ++ NBT_DBG("tasklet woke up\n"); ++ NBT_DBG_TRANSFER("rx_tasklet woke up\ndata "); ++ ++ while (hci_h4p_inb(info, UART_LSR) & UART_LSR_DR) { ++ byte = hci_h4p_inb(info, UART_RX); ++ if (info->garbage_bytes) { ++ info->garbage_bytes--; ++ continue; ++ } ++ if (info->rx_skb == NULL) { ++ info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC | GFP_DMA); ++ if (!info->rx_skb) { ++ dev_err(info->dev, "Can't allocate memory for new packet\n"); ++ goto finish_task; ++ } ++ info->rx_state = WAIT_FOR_PKT_TYPE; ++ info->rx_skb->dev = (void *)info->hdev; ++ } ++ info->hdev->stat.byte_rx++; ++ NBT_DBG_TRANSFER_NF("0x%.2x ", byte); ++ switch (info->rx_state) { ++ case WAIT_FOR_PKT_TYPE: ++ bt_cb(info->rx_skb)->pkt_type = byte; ++ info->rx_count = hci_h4p_get_hdr_len(info, byte); ++ if (info->rx_count < 0) { ++ info->hdev->stat.err_rx++; ++ kfree_skb(info->rx_skb); ++ info->rx_skb = NULL; ++ } else { ++ info->rx_state = WAIT_FOR_HEADER; ++ } ++ break; ++ case WAIT_FOR_HEADER: ++ info->rx_count--; ++ *skb_put(info->rx_skb, 1) = byte; ++ if (info->rx_count == 0) { ++ info->rx_count = hci_h4p_get_data_len(info, info->rx_skb); ++ if (info->rx_count > skb_tailroom(info->rx_skb)) { ++ dev_err(info->dev, "Frame is %ld bytes too long.\n", ++ info->rx_count - skb_tailroom(info->rx_skb)); ++ kfree_skb(info->rx_skb); ++ info->rx_skb = NULL; ++ info->garbage_bytes = info->rx_count - skb_tailroom(info->rx_skb); ++ break; ++ } ++ info->rx_state = WAIT_FOR_DATA; ++ ++ if (bt_cb(info->rx_skb)->pkt_type == H4_NEG_PKT) { ++ hci_h4p_negotiation_packet(info, info->rx_skb); ++ info->rx_skb = NULL; ++ info->rx_state = WAIT_FOR_PKT_TYPE; ++ goto finish_task; ++ } ++ if (bt_cb(info->rx_skb)->pkt_type == H4_ALIVE_PKT) { ++ hci_h4p_alive_packet(info, info->rx_skb); ++ info->rx_skb = NULL; ++ info->rx_state = WAIT_FOR_PKT_TYPE; ++ goto finish_task; ++ } ++ } ++ break; ++ case WAIT_FOR_DATA: ++ info->rx_count--; ++ *skb_put(info->rx_skb, 1) = byte; ++ if (info->rx_count == 0) { ++ /* H4+ devices should allways send word aligned packets */ ++ if (!(info->rx_skb->len % 2)) { ++ info->garbage_bytes++; ++ } ++ hci_h4p_recv_frame(info, info->rx_skb); ++ info->rx_skb = NULL; ++ } ++ break; ++ default: ++ WARN_ON(1); ++ break; ++ } ++ } ++ ++finish_task: ++ spin_lock_irqsave(&info->lock, flags); ++ hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) | UART_IER_RDI); ++ spin_unlock_irqrestore(&info->lock, flags); ++ ++ NBT_DBG_TRANSFER_NF("\n"); ++ NBT_DBG("rx_ended\n"); ++} ++ ++static void hci_h4p_tx_tasklet(unsigned long data) ++{ ++ unsigned int sent = 0; ++ unsigned long flags; ++ struct sk_buff *skb; ++ struct hci_h4p_info *info = (struct hci_h4p_info *)data; ++ ++ NBT_DBG("tasklet woke up\n"); ++ NBT_DBG_TRANSFER("tx_tasklet woke up\n data "); ++ ++ skb = skb_dequeue(&info->txq); ++ if (!skb) { ++ /* No data in buffer */ ++ NBT_DBG("skb ready\n"); ++ hci_h4p_disable_tx(info); ++ return; ++ } ++ ++ /* Copy data to tx fifo */ ++ while (!(hci_h4p_inb(info, UART_OMAP_SSR) & UART_OMAP_SSR_TXFULL) && ++ (sent < skb->len)) { ++ NBT_DBG_TRANSFER_NF("0x%.2x ", skb->data[sent]); ++ hci_h4p_outb(info, UART_TX, skb->data[sent]); ++ sent++; ++ } ++ ++ info->hdev->stat.byte_tx += sent; ++ NBT_DBG_TRANSFER_NF("\n"); ++ if (skb->len == sent) { ++ kfree_skb(skb); ++ } else { ++ skb_pull(skb, sent); ++ skb_queue_head(&info->txq, skb); ++ } ++ ++ spin_lock_irqsave(&info->lock, flags); ++ hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) | UART_IER_THRI); ++ spin_unlock_irqrestore(&info->lock, flags); ++} ++ ++static irqreturn_t hci_h4p_interrupt(int irq, void *data) ++{ ++ struct hci_h4p_info *info = (struct hci_h4p_info *)data; ++ u8 iir, msr; ++ int ret; ++ unsigned long flags; ++ ++ ret = IRQ_NONE; ++ ++ iir = hci_h4p_inb(info, UART_IIR); ++ if (iir & UART_IIR_NO_INT) { ++ dev_err(info->dev, "Interrupt but no reason irq 0x%.2x\n", iir); ++ return IRQ_HANDLED; ++ } ++ ++ NBT_DBG("In interrupt handler iir 0x%.2x\n", iir); ++ ++ iir &= UART_IIR_ID; ++ ++ if (iir == UART_IIR_MSI) { ++ msr = hci_h4p_inb(info, UART_MSR); ++ ret = IRQ_HANDLED; ++ } ++ if (iir == UART_IIR_RLSI) { ++ hci_h4p_inb(info, UART_RX); ++ hci_h4p_inb(info, UART_LSR); ++ ret = IRQ_HANDLED; ++ } ++ ++ if (iir == UART_IIR_RDI) { ++ spin_lock_irqsave(&info->lock, flags); ++ hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) & ~UART_IER_RDI); ++ spin_unlock_irqrestore(&info->lock, flags); ++ tasklet_schedule(&info->rx_task); ++ ret = IRQ_HANDLED; ++ } ++ ++ if (iir == UART_IIR_THRI) { ++ spin_lock_irqsave(&info->lock, flags); ++ hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) & ~UART_IER_THRI); ++ spin_unlock_irqrestore(&info->lock, flags); ++ tasklet_schedule(&info->tx_task); ++ ret = IRQ_HANDLED; ++ } ++ ++ return ret; ++} ++ ++static irqreturn_t hci_h4p_wakeup_interrupt(int irq, void *dev_inst) ++{ ++ struct hci_h4p_info *info = dev_inst; ++ int should_wakeup; ++ struct hci_dev *hdev; ++ ++ if (!info->hdev) ++ return IRQ_HANDLED; ++ ++ hdev = info->hdev; ++ ++ if (!test_bit(HCI_RUNNING, &hdev->flags)) ++ return IRQ_HANDLED; ++ ++ should_wakeup = gpio_get_value(info->host_wakeup_gpio); ++ NBT_DBG_POWER("gpio interrupt %d\n", should_wakeup); ++ if (should_wakeup) { ++ hci_h4p_enable_rx(info); ++ } else { ++ hci_h4p_disable_rx(info); ++ } ++ ++ return IRQ_HANDLED; ++} ++ ++static int hci_h4p_reset(struct hci_h4p_info *info) ++{ ++ int err; ++ ++ hci_h4p_init_uart(info); ++ hci_h4p_set_rts(info, 0); ++ ++ gpio_set_value(info->reset_gpio, 0); ++ msleep(100); ++ gpio_set_value(info->bt_wakeup_gpio, 1); ++ gpio_set_value(info->reset_gpio, 1); ++ msleep(100); ++ ++ err = hci_h4p_wait_for_cts(info, 1, 10); ++ if (err < 0) { ++ dev_err(info->dev, "No cts from bt chip\n"); ++ return err; ++ } ++ ++ hci_h4p_set_rts(info, 1); ++ ++ return 0; ++} ++ ++/* hci callback functions */ ++static int hci_h4p_hci_flush(struct hci_dev *hdev) ++{ ++ struct hci_h4p_info *info; ++ info = hdev->driver_data; ++ ++ skb_queue_purge(&info->txq); ++ ++ return 0; ++} ++ ++static int hci_h4p_hci_open(struct hci_dev *hdev) ++{ ++ struct hci_h4p_info *info; ++ int err; ++ struct sk_buff *neg_cmd_skb; ++ struct sk_buff_head fw_queue; ++ ++ info = hdev->driver_data; ++ ++ if (test_bit(HCI_RUNNING, &hdev->flags)) ++ return 0; ++ ++ skb_queue_head_init(&fw_queue); ++ err = hci_h4p_read_fw(info, &fw_queue); ++ if (err < 0) { ++ dev_err(info->dev, "Cannot read firmware\n"); ++ return err; ++ } ++ neg_cmd_skb = skb_dequeue(&fw_queue); ++ if (!neg_cmd_skb) { ++ err = -EPROTO; ++ goto err_clean; ++ } ++ info->alive_cmd_skb = skb_dequeue(&fw_queue); ++ if (!info->alive_cmd_skb) { ++ err = -EPROTO; ++ goto err_clean; ++ } ++ ++ hci_h4p_set_clk(info, &info->tx_clocks_en, 1); ++ hci_h4p_set_clk(info, &info->rx_clocks_en, 1); ++ ++ tasklet_enable(&info->tx_task); ++ tasklet_enable(&info->rx_task); ++ info->rx_state = WAIT_FOR_PKT_TYPE; ++ info->rx_count = 0; ++ info->garbage_bytes = 0; ++ info->rx_skb = NULL; ++ info->pm_enabled = 0; ++ init_completion(&info->fw_completion); ++ ++ err = hci_h4p_reset(info); ++ if (err < 0) ++ goto err_clean; ++ ++ err = hci_h4p_send_negotiation(info, neg_cmd_skb); ++ neg_cmd_skb = NULL; ++ if (err < 0) ++ goto err_clean; ++ ++ err = hci_h4p_send_fw(info, &fw_queue); ++ if (err < 0) { ++ dev_err(info->dev, "Sending firmware failed.\n"); ++ goto err_clean; ++ } ++ ++ kfree_skb(info->alive_cmd_skb); ++ info->alive_cmd_skb = NULL; ++ info->pm_enabled = 1; ++ info->tx_pm_enabled = 1; ++ info->rx_pm_enabled = 0; ++ set_bit(HCI_RUNNING, &hdev->flags); ++ ++ NBT_DBG("hci up and running\n"); ++ return 0; ++ ++err_clean: ++ hci_h4p_hci_flush(hdev); ++ tasklet_disable(&info->tx_task); ++ tasklet_disable(&info->rx_task); ++ hci_h4p_reset_uart(info); ++ hci_h4p_set_clk(info, &info->tx_clocks_en, 0); ++ hci_h4p_set_clk(info, &info->rx_clocks_en, 0); ++ gpio_set_value(info->reset_gpio, 0); ++ gpio_set_value(info->bt_wakeup_gpio, 0); ++ skb_queue_purge(&fw_queue); ++ kfree_skb(neg_cmd_skb); ++ neg_cmd_skb = NULL; ++ kfree_skb(info->alive_cmd_skb); ++ info->alive_cmd_skb = NULL; ++ kfree_skb(info->rx_skb); ++ ++ return err; ++} ++ ++static int hci_h4p_hci_close(struct hci_dev *hdev) ++{ ++ struct hci_h4p_info *info = hdev->driver_data; ++ ++ if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) ++ return 0; ++ ++ hci_h4p_hci_flush(hdev); ++ del_timer_sync(&info->tx_pm_timer); ++ del_timer_sync(&info->rx_pm_timer); ++ tasklet_disable(&info->tx_task); ++ tasklet_disable(&info->rx_task); ++ hci_h4p_set_clk(info, &info->tx_clocks_en, 1); ++ hci_h4p_set_clk(info, &info->rx_clocks_en, 1); ++ hci_h4p_reset_uart(info); ++ hci_h4p_set_clk(info, &info->tx_clocks_en, 0); ++ hci_h4p_set_clk(info, &info->rx_clocks_en, 0); ++ gpio_set_value(info->reset_gpio, 0); ++ gpio_set_value(info->bt_wakeup_gpio, 0); ++ kfree_skb(info->rx_skb); ++ ++ return 0; ++} ++ ++static void hci_h4p_hci_destruct(struct hci_dev *hdev) ++{ ++} ++ ++static int hci_h4p_hci_send_frame(struct sk_buff *skb) ++{ ++ struct hci_h4p_info *info; ++ struct hci_dev *hdev = (struct hci_dev *)skb->dev; ++ int err = 0; ++ ++ if (!hdev) { ++ printk(KERN_WARNING "hci_h4p: Frame for unknown device\n"); ++ return -ENODEV; ++ } ++ ++ NBT_DBG("dev %p, skb %p\n", hdev, skb); ++ ++ info = hdev->driver_data; ++ ++ if (!test_bit(HCI_RUNNING, &hdev->flags)) { ++ dev_warn(info->dev, "Frame for non-running device\n"); ++ return -EIO; ++ } ++ ++ switch (bt_cb(skb)->pkt_type) { ++ case HCI_COMMAND_PKT: ++ hdev->stat.cmd_tx++; ++ break; ++ case HCI_ACLDATA_PKT: ++ hdev->stat.acl_tx++; ++ break; ++ case HCI_SCODATA_PKT: ++ hdev->stat.sco_tx++; ++ break; ++ } ++ ++ /* Push frame type to skb */ ++ *skb_push(skb, 1) = (bt_cb(skb)->pkt_type); ++ /* We should allways send word aligned data to h4+ devices */ ++ if (skb->len % 2) { ++ err = skb_pad(skb, 1); ++ } ++ if (err) ++ return err; ++ ++ hci_h4p_enable_tx(info); ++ skb_queue_tail(&info->txq, skb); ++ tasklet_schedule(&info->tx_task); ++ ++ return 0; ++} ++ ++static int hci_h4p_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) ++{ ++ return -ENOIOCTLCMD; ++} ++ ++static int hci_h4p_register_hdev(struct hci_h4p_info *info) ++{ ++ struct hci_dev *hdev; ++ ++ /* Initialize and register HCI device */ ++ ++ hdev = hci_alloc_dev(); ++ if (!hdev) { ++ dev_err(info->dev, "Can't allocate memory for device\n"); ++ return -ENOMEM; ++ } ++ info->hdev = hdev; ++ ++ hdev->dev_type = HCI_UART; ++ hdev->driver_data = info; ++ ++ hdev->open = hci_h4p_hci_open; ++ hdev->close = hci_h4p_hci_close; ++ hdev->flush = hci_h4p_hci_flush; ++ hdev->send = hci_h4p_hci_send_frame; ++ hdev->destruct = hci_h4p_hci_destruct; ++ hdev->ioctl = hci_h4p_hci_ioctl; ++ ++ hdev->owner = THIS_MODULE; ++ ++ if (hci_register_dev(hdev) < 0) { ++ dev_err(info->dev, "hci_h4p: Can't register HCI device %s.\n", hdev->name); ++ return -ENODEV; ++ } ++ ++ return 0; ++} ++ ++static int hci_h4p_probe(struct platform_device *pdev) ++{ ++ struct omap_bluetooth_config *bt_config; ++ struct hci_h4p_info *info; ++ int irq, err; ++ ++ dev_info(&pdev->dev, "Registering HCI H4P device\n"); ++ info = kzalloc(sizeof(struct hci_h4p_info), GFP_KERNEL); ++ if (!info) ++ return -ENOMEM; ++ ++ info->dev = &pdev->dev; ++ info->pm_enabled = 0; ++ info->tx_pm_enabled = 0; ++ info->rx_pm_enabled = 0; ++ info->garbage_bytes = 0; ++ info->tx_clocks_en = 0; ++ info->rx_clocks_en = 0; ++ tasklet_init(&info->tx_task, hci_h4p_tx_tasklet, (unsigned long)info); ++ tasklet_init(&info->rx_task, hci_h4p_rx_tasklet, (unsigned long)info); ++ /* hci_h4p_hci_open assumes that tasklet is disabled in startup */ ++ tasklet_disable(&info->tx_task); ++ tasklet_disable(&info->rx_task); ++ spin_lock_init(&info->lock); ++ spin_lock_init(&info->clocks_lock); ++ skb_queue_head_init(&info->txq); ++ init_timer(&info->tx_pm_timer); ++ info->tx_pm_timer.function = hci_h4p_tx_pm_timer; ++ info->tx_pm_timer.data = (unsigned long)info; ++ init_timer(&info->rx_pm_timer); ++ info->rx_pm_timer.function = hci_h4p_rx_pm_timer; ++ info->rx_pm_timer.data = (unsigned long)info; ++ ++ if (pdev->dev.platform_data == NULL) { ++ dev_err(&pdev->dev, "Could not get Bluetooth config data\n"); ++ return -ENODATA; ++ } ++ ++ bt_config = pdev->dev.platform_data; ++ info->chip_type = bt_config->chip_type; ++ info->bt_wakeup_gpio = bt_config->bt_wakeup_gpio; ++ info->host_wakeup_gpio = bt_config->host_wakeup_gpio; ++ info->reset_gpio = bt_config->reset_gpio; ++ info->bt_sysclk = bt_config->bt_sysclk; ++ ++ NBT_DBG("RESET gpio: %d\n", info->reset_gpio); ++ NBT_DBG("BTWU gpio: %d\n", info->bt_wakeup_gpio); ++ NBT_DBG("HOSTWU gpio: %d\n", info->host_wakeup_gpio); ++ NBT_DBG("Uart: %d\n", bt_config->bt_uart); ++ NBT_DBG("sysclk: %d\n", info->bt_sysclk); ++ ++ err = gpio_request(info->reset_gpio, "BT reset"); ++ if (err < 0) { ++ dev_err(&pdev->dev, "Cannot get GPIO line %d\n", ++ info->reset_gpio); ++ kfree(info); ++ goto cleanup; ++ } ++ ++ err = gpio_request(info->bt_wakeup_gpio, "BT wakeup"); ++ if (err < 0) ++ { ++ dev_err(info->dev, "Cannot get GPIO line 0x%d", ++ info->bt_wakeup_gpio); ++ gpio_free(info->reset_gpio); ++ kfree(info); ++ goto cleanup; ++ } ++ ++ err = gpio_request(info->host_wakeup_gpio, "BT host wakeup"); ++ if (err < 0) ++ { ++ dev_err(info->dev, "Cannot get GPIO line %d", ++ info->host_wakeup_gpio); ++ gpio_free(info->reset_gpio); ++ gpio_free(info->bt_wakeup_gpio); ++ kfree(info); ++ goto cleanup; ++ } ++ ++ gpio_direction_output(info->reset_gpio, 0); ++ gpio_direction_output(info->bt_wakeup_gpio, 0); ++ gpio_direction_input(info->host_wakeup_gpio); ++ ++//FIXME ++#if defined(CONFIG_ARCH_OMAP1) ++# define OMAP_UART1_BASE OMAP1_UART1_BASE ++# define OMAP_UART2_BASE OMAP1_UART2_BASE ++# define OMAP_UART3_BASE OMAP1_UART3_BASE ++#elif defined(CONFIG_ARCH_OMAP2) ++# define OMAP_UART1_BASE OMAP2_UART1_BASE ++# define OMAP_UART2_BASE OMAP2_UART2_BASE ++# define OMAP_UART3_BASE OMAP2_UART3_BASE ++#elif defined(CONFIG_ARCH_OMAP3) ++# define OMAP_UART1_BASE OMAP3_UART1_BASE ++# define OMAP_UART2_BASE OMAP3_UART2_BASE ++# define OMAP_UART3_BASE OMAP3_UART3_BASE ++#elif defined(CONFIG_ARCH_OMAP4) ++# define OMAP_UART1_BASE OMAP4_UART1_BASE ++# define OMAP_UART2_BASE OMAP4_UART2_BASE ++# define OMAP_UART3_BASE OMAP4_UART3_BASE ++#else ++# error ++#endif ++ switch (bt_config->bt_uart) { ++ case 1: ++ if (cpu_is_omap16xx()) { ++ irq = INT_UART1; ++ info->uart_fclk = clk_get(NULL, "uart1_ck"); ++ } else if (cpu_is_omap24xx()) { ++ irq = INT_24XX_UART1_IRQ; ++ info->uart_iclk = clk_get(NULL, "uart1_ick"); ++ info->uart_fclk = clk_get(NULL, "uart1_fck"); ++ } ++ /* FIXME: Use platform_get_resource for the port */ ++ info->uart_base = ioremap(OMAP_UART1_BASE, 0x16); ++ if (!info->uart_base) ++ goto cleanup; ++ break; ++ case 2: ++ if (cpu_is_omap16xx()) { ++ irq = INT_UART2; ++ info->uart_fclk = clk_get(NULL, "uart2_ck"); ++ } else { ++ irq = INT_24XX_UART2_IRQ; ++ info->uart_iclk = clk_get(NULL, "uart2_ick"); ++ info->uart_fclk = clk_get(NULL, "uart2_fck"); ++ } ++ /* FIXME: Use platform_get_resource for the port */ ++ info->uart_base = ioremap(OMAP_UART2_BASE, 0x16); ++ if (!info->uart_base) ++ goto cleanup; ++ break; ++ case 3: ++ if (cpu_is_omap16xx()) { ++ irq = INT_UART3; ++ info->uart_fclk = clk_get(NULL, "uart3_ck"); ++ } else { ++ irq = INT_24XX_UART3_IRQ; ++ info->uart_iclk = clk_get(NULL, "uart3_ick"); ++ info->uart_fclk = clk_get(NULL, "uart3_fck"); ++ } ++ /* FIXME: Use platform_get_resource for the port */ ++ info->uart_base = ioremap(OMAP_UART3_BASE, 0x16); ++ if (!info->uart_base) ++ goto cleanup; ++ break; ++ default: ++ dev_err(info->dev, "No uart defined\n"); ++ goto cleanup; ++ } ++ ++ info->irq = irq; ++ err = request_irq(irq, hci_h4p_interrupt, 0, "hci_h4p", (void *)info); ++ if (err < 0) { ++ dev_err(info->dev, "hci_h4p: unable to get IRQ %d\n", irq); ++ goto cleanup; ++ } ++ ++ err = request_irq(gpio_to_irq(info->host_wakeup_gpio), ++ hci_h4p_wakeup_interrupt, ++ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, ++ "hci_h4p_wkup", (void *)info); ++ if (err < 0) { ++ dev_err(info->dev, "hci_h4p: unable to get wakeup IRQ %d\n", ++ gpio_to_irq(info->host_wakeup_gpio)); ++ free_irq(irq, (void *)info); ++ goto cleanup; ++ } ++ ++ hci_h4p_set_clk(info, &info->tx_clocks_en, 1); ++ hci_h4p_set_auto_ctsrts(info, 0, UART_EFR_CTS | UART_EFR_RTS); ++ err = hci_h4p_init_uart(info); ++ if (err < 0) ++ goto cleanup_irq; ++ err = hci_h4p_reset(info); ++ if (err < 0) ++ goto cleanup_irq; ++ err = hci_h4p_wait_for_cts(info, 1, 10); ++ if (err < 0) ++ goto cleanup_irq; ++ hci_h4p_set_clk(info, &info->tx_clocks_en, 0); ++ ++ platform_set_drvdata(pdev, info); ++ err = hci_h4p_sysfs_create_files(info->dev); ++ if (err < 0) ++ goto cleanup_irq; ++ ++ if (hci_h4p_register_hdev(info) < 0) { ++ dev_err(info->dev, "failed to register hci_h4p hci device\n"); ++ goto cleanup_irq; ++ } ++ gpio_set_value(info->reset_gpio, 0); ++ ++ return 0; ++ ++cleanup_irq: ++ free_irq(irq, (void *)info); ++ free_irq(gpio_to_irq(info->host_wakeup_gpio), (void *)info); ++cleanup: ++ gpio_set_value(info->reset_gpio, 0); ++ gpio_free(info->reset_gpio); ++ gpio_free(info->bt_wakeup_gpio); ++ gpio_free(info->host_wakeup_gpio); ++ kfree(info); ++ ++ return err; ++ ++} ++ ++static int hci_h4p_remove(struct platform_device *dev) ++{ ++ struct hci_h4p_info *info; ++ ++ info = platform_get_drvdata(dev); ++ ++ hci_h4p_hci_close(info->hdev); ++ free_irq(gpio_to_irq(info->host_wakeup_gpio), (void *) info); ++ hci_free_dev(info->hdev); ++ gpio_free(info->reset_gpio); ++ gpio_free(info->bt_wakeup_gpio); ++ gpio_free(info->host_wakeup_gpio); ++ free_irq(info->irq, (void *) info); ++ kfree(info); ++ ++ return 0; ++} ++ ++static struct platform_driver hci_h4p_driver = { ++ .probe = hci_h4p_probe, ++ .remove = hci_h4p_remove, ++ .driver = { ++ .name = "hci_h4p", ++ }, ++}; ++ ++static int __init hci_h4p_init(void) ++{ ++ int err = 0; ++ ++ /* Register the driver with LDM */ ++ err = platform_driver_register(&hci_h4p_driver); ++ if (err < 0) ++ printk(KERN_WARNING "failed to register hci_h4p driver\n"); ++ ++ return err; ++} ++ ++static void __exit hci_h4p_exit(void) ++{ ++ platform_driver_unregister(&hci_h4p_driver); ++} ++ ++module_init(hci_h4p_init); ++module_exit(hci_h4p_exit); ++ ++MODULE_DESCRIPTION("h4 driver with nokia extensions"); ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Ville Tervo"); +Index: linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/fw.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/fw.c 2010-11-05 17:04:44.762000001 +0100 +@@ -0,0 +1,155 @@ ++/* ++ * This file is part of hci_h4p bluetooth driver ++ * ++ * Copyright (C) 2005, 2006 Nokia Corporation. ++ * ++ * Contact: Ville Tervo <ville.tervo@nokia.com> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, but ++ * WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ++ * General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA ++ * 02110-1301 USA ++ * ++ */ ++ ++#include <linux/skbuff.h> ++#include <linux/firmware.h> ++#include <linux/clk.h> ++ ++#include <net/bluetooth/bluetooth.h> ++ ++#include "hci_h4p.h" ++ ++#define BT_CHIP_TI 2 ++#define BT_CHIP_CSR 1 ++ ++static int fw_pos; ++ ++/* Firmware handling */ ++static int hci_h4p_open_firmware(struct hci_h4p_info *info, ++ const struct firmware **fw_entry) ++{ ++ int err; ++ ++ fw_pos = 0; ++ NBT_DBG_FW("Opening %d firmware\n", info->chip_type); ++ switch (info->chip_type) { ++ case BT_CHIP_TI: ++ err = request_firmware(fw_entry, "brf6150fw.bin", info->dev); ++ break; ++ case BT_CHIP_CSR: ++ err = request_firmware(fw_entry, "bc4fw.bin", info->dev); ++ break; ++ default: ++ dev_err(info->dev, "Invalid chip type\n"); ++ *fw_entry = NULL; ++ err = -EINVAL; ++ } ++ ++ return err; ++} ++ ++static void hci_h4p_close_firmware(const struct firmware *fw_entry) ++{ ++ release_firmware(fw_entry); ++} ++ ++/* Read fw. Return length of the command. If no more commands in ++ * fw 0 is returned. In error case return value is negative. ++ */ ++static int hci_h4p_read_fw_cmd(struct hci_h4p_info *info, struct sk_buff **skb, ++ const struct firmware *fw_entry, int how) ++{ ++ unsigned int cmd_len; ++ ++ if (fw_pos >= fw_entry->size) { ++ return 0; ++ } ++ ++ cmd_len = fw_entry->data[fw_pos++]; ++ if (!cmd_len) ++ return 0; ++ ++ if (fw_pos + cmd_len > fw_entry->size) { ++ dev_err(info->dev, "Corrupted firmware image\n"); ++ return -EMSGSIZE; ++ } ++ ++ *skb = bt_skb_alloc(cmd_len, how); ++ if (!*skb) { ++ dev_err(info->dev, "Cannot reserve memory for buffer\n"); ++ return -ENOMEM; ++ } ++ memcpy(skb_put(*skb, cmd_len), &fw_entry->data[fw_pos], cmd_len); ++ ++ fw_pos += cmd_len; ++ ++ return (*skb)->len; ++} ++ ++int hci_h4p_read_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue) ++{ ++ const struct firmware *fw_entry = NULL; ++ struct sk_buff *skb = NULL; ++ int err; ++ ++ err = hci_h4p_open_firmware(info, &fw_entry); ++ if (err < 0 || !fw_entry) ++ goto err_clean; ++ ++ while ((err = hci_h4p_read_fw_cmd(info, &skb, fw_entry, GFP_KERNEL))) { ++ if (err < 0 || !skb) ++ goto err_clean; ++ ++ skb_queue_tail(fw_queue, skb); ++ } ++ ++err_clean: ++ hci_h4p_close_firmware(fw_entry); ++ return err; ++} ++ ++int hci_h4p_send_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue) ++{ ++ int err; ++ ++ switch(info->chip_type) { ++ case BT_CHIP_CSR: ++ err = hci_h4p_bc4_send_fw(info, fw_queue); ++ break; ++ case BT_CHIP_TI: ++ err = hci_h4p_brf6150_send_fw(info, fw_queue); ++ break; ++ default: ++ dev_err(info->dev, "Don't know how to send firmware\n"); ++ err = -EINVAL; ++ } ++ ++ return err; ++} ++ ++void hci_h4p_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb) ++{ ++ switch (info->chip_type) { ++ case BT_CHIP_CSR: ++ hci_h4p_bc4_parse_fw_event(info, skb); ++ break; ++ case BT_CHIP_TI: ++ hci_h4p_brf6150_parse_fw_event(info, skb); ++ break; ++ default: ++ dev_err(info->dev, "Don't know how to parse fw event\n"); ++ info->fw_error = -EINVAL; ++ } ++ ++ return; ++} +Index: linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/fw-csr.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/fw-csr.c 2010-11-05 17:04:44.762000001 +0100 +@@ -0,0 +1,149 @@ ++/* ++ * This file is part of hci_h4p bluetooth driver ++ * ++ * Copyright (C) 2005, 2006 Nokia Corporation. ++ * ++ * Contact: Ville Tervo <ville.tervo@nokia.com> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, but ++ * WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ++ * General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA ++ * 02110-1301 USA ++ * ++ */ ++ ++#include <linux/skbuff.h> ++#include <linux/delay.h> ++#include <linux/serial_reg.h> ++ ++#include "hci_h4p.h" ++ ++void hci_h4p_bc4_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb) ++{ ++ /* Check if this is fw packet */ ++ if (skb->data[0] != 0xff) { ++ hci_recv_frame(skb); ++ return; ++ } ++ ++ if (skb->data[11] || skb->data[12]) { ++ dev_err(info->dev, "Firmware sending command failed\n"); ++ info->fw_error = -EPROTO; ++ } ++ ++ kfree_skb(skb); ++ complete(&info->fw_completion); ++} ++ ++int hci_h4p_bc4_send_fw(struct hci_h4p_info *info, ++ struct sk_buff_head *fw_queue) ++{ ++ struct sk_buff *skb; ++ unsigned int offset; ++ int retries, count, i; ++ ++ info->fw_error = 0; ++ ++ NBT_DBG_FW("Sending firmware\n"); ++ skb = skb_dequeue(fw_queue); ++ ++ if (!skb) ++ return -ENOMSG; ++ ++ info->bdaddr[0] = 0x00; ++ info->bdaddr[1] = 0x1D; ++ info->bdaddr[2] = 0x6E; ++ info->bdaddr[3] = 0xD4; ++ info->bdaddr[4] = 0xF0; ++ info->bdaddr[5] = 0x37; ++ ++ /* Check if this is bd_address packet */ ++ if (skb->data[15] == 0x01 && skb->data[16] == 0x00) { ++ dev_info(info->dev, "bd_address packet found\n"); ++ offset = 21; ++ skb->data[offset + 1] = 0x00; ++ skb->data[offset + 5] = 0x00; ++ skb->data[offset + 7] = info->bdaddr[0]; ++ skb->data[offset + 6] = info->bdaddr[1]; ++ skb->data[offset + 4] = info->bdaddr[2]; ++ skb->data[offset + 0] = info->bdaddr[3]; ++ skb->data[offset + 3] = info->bdaddr[4]; ++ skb->data[offset + 2] = info->bdaddr[5]; ++ } ++ ++ for (i = 0; i < 6; i++) { ++ if (info->bdaddr[i] != 0x00) ++ break; ++ } ++ ++ /* if (i > 5) { ++ dev_info(info->dev, "Valid bluetooth address not found.\n"); ++ kfree_skb(skb); ++ return -ENODEV; ++ } */ ++ ++ for (count = 1; ; count++) { ++ NBT_DBG_FW("Sending firmware command %d\n", count); ++ init_completion(&info->fw_completion); ++ skb_queue_tail(&info->txq, skb); ++ tasklet_schedule(&info->tx_task); ++ ++ skb = skb_dequeue(fw_queue); ++ if (!skb) ++ break; ++ ++ if (!wait_for_completion_timeout(&info->fw_completion, ++ msecs_to_jiffies(1000))) { ++ dev_err(info->dev, "No reply to fw command\n"); ++ return -ETIMEDOUT; ++ } ++ ++ if (info->fw_error) { ++ dev_err(info->dev, "FW error\n"); ++ return -EPROTO; ++ } ++ }; ++ ++ /* Wait for chip warm reset */ ++ retries = 100; ++ while ((!skb_queue_empty(&info->txq) || ++ !(hci_h4p_inb(info, UART_LSR) & UART_LSR_TEMT)) && ++ retries--) { ++ msleep(10); ++ } ++ if (!retries) { ++ dev_err(info->dev, "Transmitter not empty\n"); ++ return -ETIMEDOUT; ++ } ++ ++ hci_h4p_change_speed(info, BC4_MAX_BAUD_RATE); ++ ++ if (hci_h4p_wait_for_cts(info, 1, 100)) { ++ dev_err(info->dev, "cts didn't go down after final speed change\n"); ++ return -ETIMEDOUT; ++ } ++ ++ retries = 100; ++ do { ++ init_completion(&info->init_completion); ++ hci_h4p_send_alive_packet(info); ++ retries--; ++ } while (!wait_for_completion_timeout(&info->init_completion, 100) && ++ retries > 0); ++ ++ if (!retries) { ++ dev_err(info->dev, "No alive reply after speed change\n"); ++ return -ETIMEDOUT; ++ } ++ ++ return 0; ++} +Index: linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/fw-ti.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/fw-ti.c 2010-11-05 17:04:44.762000001 +0100 +@@ -0,0 +1,90 @@ ++/* ++ * This file is part of hci_h4p bluetooth driver ++ * ++ * Copyright (C) 2005, 2006 Nokia Corporation. ++ * ++ * Contact: Ville Tervo <ville.tervo@nokia.com> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, but ++ * WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ++ * General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA ++ * 02110-1301 USA ++ * ++ */ ++ ++#include <linux/skbuff.h> ++ ++#include "hci_h4p.h" ++ ++void hci_h4p_brf6150_parse_fw_event(struct hci_h4p_info *info, ++ struct sk_buff *skb) ++{ ++ struct hci_fw_event *ev; ++ int err = 0; ++ ++ if (bt_cb(skb)->pkt_type != H4_EVT_PKT) { ++ dev_err(info->dev, "Got non event fw packet.\n"); ++ err = -EPROTO; ++ goto ret; ++ } ++ ++ ev = (struct hci_fw_event *)skb->data; ++ if (ev->hev.evt != HCI_EV_CMD_COMPLETE) { ++ dev_err(info->dev, "Got non cmd complete fw event\n"); ++ err = -EPROTO; ++ goto ret; ++ } ++ ++ if (ev->status != 0) { ++ dev_err(info->dev, "Got error status from fw command\n"); ++ err = -EPROTO; ++ goto ret; ++ } ++ ++ret: ++ info->fw_error = err; ++ complete(&info->fw_completion); ++} ++ ++int hci_h4p_brf6150_send_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue) ++{ ++ struct sk_buff *skb; ++ int err = 0; ++ ++ info->fw_error = 0; ++ ++ while ((skb = skb_dequeue(fw_queue)) != NULL) { ++ /* We should allways send word aligned data to h4+ devices */ ++ if (skb->len % 2) { ++ err = skb_pad(skb, 1); ++ } ++ if (err) ++ return err; ++ ++ init_completion(&info->fw_completion); ++ skb_queue_tail(&info->txq, skb); ++ tasklet_schedule(&info->tx_task); ++ ++ if (!wait_for_completion_timeout(&info->fw_completion, HZ)) { ++ dev_err(info->dev, "Timeout while sending brf6150 fw\n"); ++ return -ETIMEDOUT; ++ } ++ ++ if (info->fw_error) { ++ dev_err(info->dev, "There was fw_error while sending bfr6150 fw\n"); ++ return -EPROTO; ++ } ++ } ++ NBT_DBG_FW("Firmware sent\n"); ++ ++ return 0; ++} +Index: linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/hci_h4p.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/hci_h4p.h 2010-11-05 17:04:44.762000001 +0100 +@@ -0,0 +1,183 @@ ++/* ++ * This file is part of hci_h4p bluetooth driver ++ * ++ * Copyright (C) 2005, 2006 Nokia Corporation. ++ * ++ * Contact: Ville Tervo <ville.tervo@nokia.com> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, but ++ * WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ++ * General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA ++ * 02110-1301 USA ++ * ++ */ ++ ++#include <mach/board.h> ++ ++#include <net/bluetooth/bluetooth.h> ++#include <net/bluetooth/hci_core.h> ++#include <net/bluetooth/hci.h> ++ ++#ifndef __DRIVERS_BLUETOOTH_HCI_H4P_H ++#define __DRIVERS_BLUETOOTH_HCI_H4P_H ++ ++#define UART_SYSC_OMAP_RESET 0x03 ++#define UART_SYSS_RESETDONE 0x01 ++#define UART_OMAP_SCR_EMPTY_THR 0x08 ++#define UART_OMAP_SCR_WAKEUP 0x10 ++#define UART_OMAP_SSR_WAKEUP 0x02 ++#define UART_OMAP_SSR_TXFULL 0x01 ++ ++#if 0 ++#define NBT_DBG(fmt, arg...) printk("%s: " fmt "" , __FUNCTION__ , ## arg) ++#else ++#define NBT_DBG(...) ++#endif ++ ++#if 0 ++#define NBT_DBG_FW(fmt, arg...) printk("%s: " fmt "" , __FUNCTION__ , ## arg) ++#else ++#define NBT_DBG_FW(...) ++#endif ++ ++#if 0 ++#define NBT_DBG_POWER(fmt, arg...) printk("%s: " fmt "" , __FUNCTION__ , ## arg) ++#else ++#define NBT_DBG_POWER(...) ++#endif ++ ++#if 0 ++#define NBT_DBG_TRANSFER(fmt, arg...) printk("%s: " fmt "" , __FUNCTION__ , ## arg) ++#else ++#define NBT_DBG_TRANSFER(...) ++#endif ++ ++#if 0 ++#define NBT_DBG_TRANSFER_NF(fmt, arg...) printk(fmt "" , ## arg) ++#else ++#define NBT_DBG_TRANSFER_NF(...) ++#endif ++ ++#if 0 ++#define NBT_DBG_DMA(fmt, arg...) printk("%s: " fmt "" , __FUNCTION__ , ## arg) ++#else ++#define NBT_DBG_DMA(...) ++#endif ++ ++struct hci_h4p_info { ++ struct hci_dev *hdev; ++ spinlock_t lock; ++ ++ void __iomem *uart_base; ++ unsigned long uart_phys_base; ++ int irq; ++ struct device *dev; ++ u8 bdaddr[6]; ++ u8 chip_type; ++ u8 bt_wakeup_gpio; ++ u8 host_wakeup_gpio; ++ u8 reset_gpio; ++ u8 bt_sysclk; ++ ++ ++ struct sk_buff_head fw_queue; ++ struct sk_buff *alive_cmd_skb; ++ struct completion init_completion; ++ struct completion fw_completion; ++ int fw_error; ++ int init_error; ++ ++ struct sk_buff_head txq; ++ struct tasklet_struct tx_task; ++ ++ struct sk_buff *rx_skb; ++ long rx_count; ++ unsigned long rx_state; ++ unsigned long garbage_bytes; ++ struct tasklet_struct rx_task; ++ ++ int pm_enabled; ++ int tx_pm_enabled; ++ int rx_pm_enabled; ++ struct timer_list tx_pm_timer; ++ struct timer_list rx_pm_timer; ++ ++ int tx_clocks_en; ++ int rx_clocks_en; ++ spinlock_t clocks_lock; ++ struct clk *uart_iclk; ++ struct clk *uart_fclk; ++}; ++ ++#define MAX_BAUD_RATE 921600 ++#define BC4_MAX_BAUD_RATE 3692300 ++#define UART_CLOCK 48000000 ++#define BT_INIT_DIVIDER 320 ++#define BT_BAUDRATE_DIVIDER 384000000 ++#define BT_SYSCLK_DIV 1000 ++#define INIT_SPEED 120000 ++ ++#define H4_TYPE_SIZE 1 ++ ++/* H4+ packet types */ ++#define H4_CMD_PKT 0x01 ++#define H4_ACL_PKT 0x02 ++#define H4_SCO_PKT 0x03 ++#define H4_EVT_PKT 0x04 ++#define H4_NEG_PKT 0x06 ++#define H4_ALIVE_PKT 0x07 ++ ++/* TX states */ ++#define WAIT_FOR_PKT_TYPE 1 ++#define WAIT_FOR_HEADER 2 ++#define WAIT_FOR_DATA 3 ++ ++struct hci_fw_event { ++ struct hci_event_hdr hev; ++ struct hci_ev_cmd_complete cmd; ++ u8 status; ++} __attribute__ ((packed)); ++ ++struct hci_bc4_set_bdaddr { ++ u8 type; ++ struct hci_command_hdr cmd_hdr; ++} __attribute__ ((packed)); ++ ++int hci_h4p_send_alive_packet(struct hci_h4p_info *info); ++ ++void hci_h4p_bc4_parse_fw_event(struct hci_h4p_info *info, ++ struct sk_buff *skb); ++int hci_h4p_bc4_send_fw(struct hci_h4p_info *info, ++ struct sk_buff_head *fw_queue); ++ ++void hci_h4p_brf6150_parse_fw_event(struct hci_h4p_info *info, ++ struct sk_buff *skb); ++int hci_h4p_brf6150_send_fw(struct hci_h4p_info *info, ++ struct sk_buff_head *fw_queue); ++ ++int hci_h4p_read_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue); ++int hci_h4p_send_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue); ++void hci_h4p_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb); ++ ++int hci_h4p_sysfs_create_files(struct device *dev); ++ ++void hci_h4p_outb(struct hci_h4p_info *info, unsigned int offset, u8 val); ++u8 hci_h4p_inb(struct hci_h4p_info *info, unsigned int offset); ++void hci_h4p_set_rts(struct hci_h4p_info *info, int active); ++int hci_h4p_wait_for_cts(struct hci_h4p_info *info, int active, int timeout_ms); ++void __hci_h4p_set_auto_ctsrts(struct hci_h4p_info *info, int on, u8 which); ++void hci_h4p_set_auto_ctsrts(struct hci_h4p_info *info, int on, u8 which); ++void hci_h4p_change_speed(struct hci_h4p_info *info, unsigned long speed); ++int hci_h4p_reset_uart(struct hci_h4p_info *info); ++int hci_h4p_init_uart(struct hci_h4p_info *info); ++ ++#endif /* __DRIVERS_BLUETOOTH_HCI_H4P_H */ +Index: linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/Makefile +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/Makefile 2010-11-05 17:04:44.762000001 +0100 +@@ -0,0 +1,7 @@ ++# ++# Makefile for the Linux Bluetooth HCI device drivers. ++# ++ ++obj-$(CONFIG_BT_HCIH4P) += hci_h4p.o ++ ++hci_h4p-objs := core.o fw.o uart.o sysfs.o fw-ti.o fw-csr.o +Index: linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/sysfs.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/sysfs.c 2010-11-05 17:04:44.762000001 +0100 +@@ -0,0 +1,84 @@ ++/* ++ * This file is part of hci_h4p bluetooth driver ++ * ++ * Copyright (C) 2005, 2006 Nokia Corporation. ++ * ++ * Contact: Ville Tervo <ville.tervo@nokia.com> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, but ++ * WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ++ * General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA ++ * 02110-1301 USA ++ * ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/device.h> ++#include <linux/platform_device.h> ++ ++#include "hci_h4p.h" ++ ++#ifdef CONFIG_SYSFS ++ ++static ssize_t hci_h4p_store_bdaddr(struct device *dev, struct device_attribute *attr, ++ const char *buf, size_t count) ++{ ++ struct hci_h4p_info *info = (struct hci_h4p_info*)dev_get_drvdata(dev); ++ unsigned int bdaddr[6]; ++ int ret, i; ++ ++ dev_info(info->dev, "HCI_H4P_STORE_BDADDR called\n"); ++ ++ ret = sscanf(buf, "%2x:%2x:%2x:%2x:%2x:%2x\n", ++ &bdaddr[0], &bdaddr[1], &bdaddr[2], ++ &bdaddr[3], &bdaddr[4], &bdaddr[5]); ++ ++ if (ret != 6) { ++ dev_info(info->dev, "bdaddr isn't found\n"); ++ return -EINVAL; ++ } ++ ++ //for (i = 0; i < 6; i++) ++ //info->bdaddr[i] = bdaddr[i] & 0xff; ++ ++ info->bdaddr[0] = 0x00; ++ info->bdaddr[1] = 0x1D; ++ info->bdaddr[2] = 0x6E; ++ info->bdaddr[3] = 0xD4; ++ info->bdaddr[4] = 0xF0; ++ info->bdaddr[5] = 0x37; ++ ++ return count; ++} ++ ++static ssize_t hci_h4p_show_bdaddr(struct device *dev, struct device_attribute *attr, ++ char *buf) ++{ ++ struct hci_h4p_info *info = (struct hci_h4p_info*)dev_get_drvdata(dev); ++ ++ return sprintf(buf, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n", ++ info->bdaddr[0], ++ info->bdaddr[1], ++ info->bdaddr[2], ++ info->bdaddr[3], ++ info->bdaddr[4], ++ info->bdaddr[5]); ++} ++ ++static DEVICE_ATTR(bdaddr, S_IRUGO | S_IWUSR, hci_h4p_show_bdaddr, hci_h4p_store_bdaddr); ++int hci_h4p_sysfs_create_files(struct device *dev) ++{ ++ return device_create_file(dev, &dev_attr_bdaddr); ++} ++ ++#endif +Index: linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/uart.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.37-rc1/drivers/bluetooth/hci_h4p/uart.c 2010-11-05 17:04:44.762000001 +0100 +@@ -0,0 +1,169 @@ ++/* ++ * This file is part of hci_h4p bluetooth driver ++ * ++ * Copyright (C) 2005, 2006 Nokia Corporation. ++ * ++ * Contact: Ville Tervo <ville.tervo@nokia.com> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, but ++ * WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ++ * General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA ++ * 02110-1301 USA ++ * ++ */ ++ ++#include <linux/serial_reg.h> ++#include <linux/delay.h> ++#include <linux/clk.h> ++ ++#include <asm/io.h> ++ ++#include "hci_h4p.h" ++ ++inline void hci_h4p_outb(struct hci_h4p_info *info, unsigned int offset, u8 val) ++{ ++ offset <<= 2; ++ __raw_writeb(val, info->uart_base + offset); ++ //outb(val, info->uart_base + (offset << 2)); ++} ++ ++inline u8 hci_h4p_inb(struct hci_h4p_info *info, unsigned int offset) ++{ ++ offset <<= 2; ++ return (u8)__raw_readb(info->uart_base + offset); ++ //return (unsigned int)__raw_readb(up->membase + offset); ++ //return inb(info->uart_base + (offset << 2)); ++} ++ ++void hci_h4p_set_rts(struct hci_h4p_info *info, int active) ++{ ++ u8 b; ++ ++ b = hci_h4p_inb(info, UART_MCR); ++ if (active) ++ b |= UART_MCR_RTS; ++ else ++ b &= ~UART_MCR_RTS; ++ hci_h4p_outb(info, UART_MCR, b); ++} ++ ++int hci_h4p_wait_for_cts(struct hci_h4p_info *info, int active, ++ int timeout_ms) ++{ ++ int okay; ++ unsigned long timeout; ++ ++ okay = 0; ++ timeout = jiffies + msecs_to_jiffies(timeout_ms); ++ for (;;) { ++ int state; ++ ++ state = hci_h4p_inb(info, UART_MSR) & UART_MSR_CTS; ++ if (active) { ++ if (state) ++ return 0; ++ } else { ++ if (!state) ++ return 0; ++ } ++ if (time_after(jiffies, timeout)) ++ return -ETIMEDOUT; ++ } ++} ++ ++void __hci_h4p_set_auto_ctsrts(struct hci_h4p_info *info, int on, u8 which) ++{ ++ u8 lcr, b; ++ ++ lcr = hci_h4p_inb(info, UART_LCR); ++ hci_h4p_outb(info, UART_LCR, 0xbf); ++ b = hci_h4p_inb(info, UART_EFR); ++ if (on) ++ b |= which; ++ else ++ b &= ~which; ++ hci_h4p_outb(info, UART_EFR, b); ++ hci_h4p_outb(info, UART_LCR, lcr); ++} ++ ++void hci_h4p_set_auto_ctsrts(struct hci_h4p_info *info, int on, u8 which) ++{ ++ unsigned long flags; ++ ++ spin_lock_irqsave(&info->lock, flags); ++ __hci_h4p_set_auto_ctsrts(info, on, which); ++ spin_unlock_irqrestore(&info->lock, flags); ++} ++ ++void hci_h4p_change_speed(struct hci_h4p_info *info, unsigned long speed) ++{ ++ unsigned int divisor; ++ u8 lcr, mdr1; ++ ++ NBT_DBG("Setting speed %lu\n", speed); ++ ++ if (speed >= 460800) { ++ divisor = UART_CLOCK / 13 / speed; ++ mdr1 = 3; ++ } else { ++ divisor = UART_CLOCK / 16 / speed; ++ mdr1 = 0; ++ } ++ ++ hci_h4p_outb(info, UART_OMAP_MDR1, 7); /* Make sure UART mode is disabled */ ++ lcr = hci_h4p_inb(info, UART_LCR); ++ hci_h4p_outb(info, UART_LCR, UART_LCR_DLAB); /* Set DLAB */ ++ hci_h4p_outb(info, UART_DLL, divisor & 0xff); /* Set speed */ ++ hci_h4p_outb(info, UART_DLM, divisor >> 8); ++ hci_h4p_outb(info, UART_LCR, lcr); ++ hci_h4p_outb(info, UART_OMAP_MDR1, mdr1); /* Make sure UART mode is enabled */ ++} ++ ++int hci_h4p_reset_uart(struct hci_h4p_info *info) ++{ ++ int count = 0; ++ ++ /* Reset the UART */ ++ hci_h4p_outb(info, UART_OMAP_SYSC, UART_SYSC_OMAP_RESET); ++ while (!(hci_h4p_inb(info, UART_OMAP_SYSS) & UART_SYSS_RESETDONE)) { ++ if (count++ > 20000) { ++ dev_err(info->dev, "hci_h4p: UART reset timeout\n"); ++ return -ENODEV; ++ } ++ udelay(1); ++ } ++ ++ return 0; ++} ++ ++int hci_h4p_init_uart(struct hci_h4p_info *info) ++{ ++ int err; ++ ++ err = hci_h4p_reset_uart(info); ++ if (err < 0) ++ return err; ++ ++ /* Enable and setup FIFO */ ++ hci_h4p_outb(info, UART_LCR, UART_LCR_WLEN8); ++ hci_h4p_outb(info, UART_OMAP_MDR1, 0x00); /* Make sure UART mode is enabled */ ++ hci_h4p_outb(info, UART_OMAP_SCR, 0x80); ++ hci_h4p_outb(info, UART_EFR, UART_EFR_ECB); ++ hci_h4p_outb(info, UART_MCR, UART_MCR_TCRTLR); ++ hci_h4p_outb(info, UART_TI752_TLR, 0x1f); ++ hci_h4p_outb(info, UART_TI752_TCR, 0xef); ++ hci_h4p_outb(info, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR | ++ UART_FCR_CLEAR_XMIT | UART_FCR_R_TRIG_00); ++ hci_h4p_outb(info, UART_IER, UART_IER_RDI); ++ ++ return 0; ++} +Index: linux-2.6.37-rc1/drivers/bluetooth/Kconfig +=================================================================== +--- linux-2.6.37-rc1.orig/drivers/bluetooth/Kconfig 2010-11-01 12:54:12.000000000 +0100 ++++ linux-2.6.37-rc1/drivers/bluetooth/Kconfig 2010-11-05 17:04:44.762000001 +0100 +@@ -173,6 +173,16 @@ + Say Y here to compile support for HCI UART devices into the + kernel or say M to compile it as module (btuart_cs). + ++config BT_HCIH4P ++ tristate "HCI driver with H4 Nokia extensions" ++ depends on BT && ARCH_OMAP ++ help ++ Bluetooth HCI driver with H4 extensions. This driver provides ++ support for H4+ Bluetooth chip with vendor-specific H4 extensions. ++ ++ Say Y here to compile support for h4 extended devices into the kernel ++ or say M to compile it as module (hci_h4p). ++ + config BT_HCIVHCI + tristate "HCI VHCI (Virtual HCI device) driver" + help +Index: linux-2.6.37-rc1/drivers/bluetooth/Makefile +=================================================================== +--- linux-2.6.37-rc1.orig/drivers/bluetooth/Makefile 2010-11-01 12:54:12.000000000 +0100 ++++ linux-2.6.37-rc1/drivers/bluetooth/Makefile 2010-11-05 17:04:44.763000001 +0100 +@@ -11,6 +11,7 @@ + obj-$(CONFIG_BT_HCIBT3C) += bt3c_cs.o + obj-$(CONFIG_BT_HCIBLUECARD) += bluecard_cs.o + obj-$(CONFIG_BT_HCIBTUART) += btuart_cs.o ++obj-$(CONFIG_BT_HCIH4P) += hci_h4p/ + + obj-$(CONFIG_BT_HCIBTUSB) += btusb.o + obj-$(CONFIG_BT_HCIBTSDIO) += btsdio.o diff --git a/target/linux/omap24xx/patches-2.6.38/500-cbus.patch b/target/linux/omap24xx/patches-2.6.38/500-cbus.patch new file mode 100644 index 0000000000..6666bd9655 --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/500-cbus.patch @@ -0,0 +1,3563 @@ +--- + arch/arm/Kconfig | 4 + drivers/Makefile | 2 + drivers/cbus/Kconfig | 89 ++++ + drivers/cbus/Makefile | 14 + drivers/cbus/cbus.c | 309 ++++++++++++++++ + drivers/cbus/cbus.h | 36 + + drivers/cbus/retu-headset.c | 356 ++++++++++++++++++ + drivers/cbus/retu-pwrbutton.c | 118 ++++++ + drivers/cbus/retu-rtc.c | 477 ++++++++++++++++++++++++ + drivers/cbus/retu-user.c | 424 ++++++++++++++++++++++ + drivers/cbus/retu-wdt.c | 387 ++++++++++++++++++++ + drivers/cbus/retu.c | 468 ++++++++++++++++++++++++ + drivers/cbus/retu.h | 77 ++++ + drivers/cbus/tahvo-usb.c | 788 +++++++++++++++++++++++++++++++++++++++++ + drivers/cbus/tahvo-user.c | 406 +++++++++++++++++++++ + drivers/cbus/tahvo.c | 443 +++++++++++++++++++++++ + drivers/cbus/tahvo.h | 61 +++ + drivers/cbus/user_retu_tahvo.h | 75 +++ + 18 files changed, 4533 insertions(+), 1 deletion(-) + +Index: linux-2.6.38-rc6/drivers/cbus/cbus.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/cbus.c 2011-02-24 12:04:51.456189134 +0100 +@@ -0,0 +1,332 @@ ++/* ++ * drivers/cbus/cbus.c ++ * ++ * Support functions for CBUS serial protocol ++ * ++ * Copyright (C) 2004-2010 Nokia Corporation ++ * Contact: Felipe Balbi <felipe.balbi@nokia.com> ++ * ++ * Written by Juha Yrjölä <juha.yrjola@nokia.com>, ++ * David Weinehall <david.weinehall@nokia.com>, and ++ * Mikko Ylinen <mikko.k.ylinen@nokia.com> ++ * ++ * Several updates and cleanups by Felipe Balbi <felipe.balbi@nokia.com> ++ * ++ * This file is subject to the terms and conditions of the GNU General ++ * Public License. See the file "COPYING" in the main directory of this ++ * archive for more details. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ */ ++ ++#include <linux/device.h> ++#include <linux/init.h> ++#include <linux/kernel.h> ++#include <linux/slab.h> ++#include <linux/spinlock.h> ++#include <linux/gpio.h> ++#include <linux/platform_device.h> ++ ++#include <plat/cbus.h> ++ ++#include "cbus.h" ++ ++#define CBUS_XFER_READ 1 ++#define CBUS_XFER_WRITE 0 ++ ++struct cbus_host { ++ /* host lock */ ++ spinlock_t lock; ++ ++ struct device *dev; ++ ++ int clk_gpio; ++ int dat_gpio; ++ int sel_gpio; ++}; ++ ++static struct cbus_host *cbus_host; ++ ++/** ++ * cbus_send_bit - sends one bit over the bus ++ * @host: the host we're using ++ * @bit: one bit of information to send ++ * @input: whether to set data pin as input after sending ++ */ ++static int cbus_send_bit(struct cbus_host *host, unsigned bit, ++ unsigned input) ++{ ++ int ret = 0; ++ ++ gpio_set_value(host->dat_gpio, bit ? 1 : 0); ++ gpio_set_value(host->clk_gpio, 1); ++ ++ /* The data bit is read on the rising edge of CLK */ ++ if (input) ++ ret = gpio_direction_input(host->dat_gpio); ++ ++ gpio_set_value(host->clk_gpio, 0); ++ ++ return ret; ++} ++ ++/** ++ * cbus_send_data - sends @len amount of data over the bus ++ * @host: the host we're using ++ * @data: the data to send ++ * @len: size of the transfer ++ * @input: whether to set data pin as input after sending ++ */ ++static int cbus_send_data(struct cbus_host *host, unsigned data, unsigned len, ++ unsigned input) ++{ ++ int ret = 0; ++ int i; ++ ++ for (i = len; i > 0; i--) { ++ ret = cbus_send_bit(host, data & (1 << (i - 1)), ++ input && (i == 1)); ++ if (ret < 0) ++ goto out; ++ } ++ ++out: ++ return ret; ++} ++ ++/** ++ * cbus_receive_bit - receives one bit from the bus ++ * @host: the host we're using ++ */ ++static int cbus_receive_bit(struct cbus_host *host) ++{ ++ int ret; ++ ++ gpio_set_value(host->clk_gpio, 1); ++ ret = gpio_get_value(host->dat_gpio); ++ if (ret < 0) ++ goto out; ++ gpio_set_value(host->clk_gpio, 0); ++ ++out: ++ return ret; ++} ++ ++/** ++ * cbus_receive_data - receives @len data from the bus ++ * @host: the host we're using ++ * @len: the length of data to receive ++ */ ++static int cbus_receive_data(struct cbus_host *host, unsigned len) ++{ ++ int ret = 0; ++ int i; ++ ++ for (i = 16; i > 0; i--) { ++ int bit = cbus_receive_bit(host); ++ ++ if (bit < 0) ++ goto out; ++ ++ if (bit) ++ ret |= 1 << (i - 1); ++ } ++ ++out: ++ return ret; ++} ++ ++/** ++ * cbus_transfer - transfers data over the bus ++ * @host: the host we're using ++ * @rw: read/write flag ++ * @dev: device address ++ * @reg: register address ++ * @data: if @rw == 0 data to send otherwise 0 ++ */ ++static int cbus_transfer(struct cbus_host *host, unsigned rw, unsigned dev, ++ unsigned reg, unsigned data) ++{ ++ unsigned long flags; ++ int input = 0; ++ int ret = 0; ++ ++ /* We don't want interrupts disturbing our transfer */ ++ spin_lock_irqsave(&host->lock, flags); ++ ++ /* Reset state and start of transfer, SEL stays down during transfer */ ++ gpio_set_value(host->sel_gpio, 0); ++ ++ /* Set the DAT pin to output */ ++ gpio_direction_output(host->dat_gpio, 1); ++ ++ /* Send the device address */ ++ ret = cbus_send_data(host, dev, 3, 0); ++ if (ret < 0) { ++ dev_dbg(host->dev, "failed sending device addr\n"); ++ goto out; ++ } ++ ++ /* Send the rw flag */ ++ ret = cbus_send_bit(host, rw, 0); ++ if (ret < 0) { ++ dev_dbg(host->dev, "failed sending read/write flag\n"); ++ goto out; ++ } ++ ++ /* Send the register address */ ++ if (rw) ++ input = true; ++ ++ ret = cbus_send_data(host, reg, 5, input); ++ if (ret < 0) { ++ dev_dbg(host->dev, "failed sending register addr\n"); ++ goto out; ++ } ++ ++ if (!rw) { ++ ret = cbus_send_data(host, data, 16, 0); ++ if (ret < 0) { ++ dev_dbg(host->dev, "failed sending data\n"); ++ goto out; ++ } ++ } else { ++ gpio_set_value(host->clk_gpio, 1); ++ ++ ret = cbus_receive_data(host, 16); ++ if (ret < 0) { ++ dev_dbg(host->dev, "failed receiving data\n"); ++ goto out; ++ } ++ } ++ ++ /* Indicate end of transfer, SEL goes up until next transfer */ ++ gpio_set_value(host->sel_gpio, 1); ++ gpio_set_value(host->clk_gpio, 1); ++ gpio_set_value(host->clk_gpio, 0); ++ ++out: ++ spin_unlock_irqrestore(&host->lock, flags); ++ ++ return ret; ++} ++ ++/** ++ * cbus_read_reg - reads a given register from the device ++ * @dev: device address ++ * @reg: register address ++ */ ++int cbus_read_reg(unsigned dev, unsigned reg) ++{ ++ return cbus_transfer(cbus_host, CBUS_XFER_READ, dev, reg, 0); ++} ++EXPORT_SYMBOL(cbus_read_reg); ++ ++/** ++ * cbus_write_reg - writes to a given register of the device ++ * @dev: device address ++ * @reg: register address ++ * @val: data to be written to @reg ++ */ ++int cbus_write_reg(unsigned dev, unsigned reg, unsigned val) ++{ ++ return cbus_transfer(cbus_host, CBUS_XFER_WRITE, dev, reg, val); ++} ++EXPORT_SYMBOL(cbus_write_reg); ++ ++static int __init cbus_bus_probe(struct platform_device *pdev) ++{ ++ struct cbus_host *chost; ++ struct cbus_host_platform_data *pdata = pdev->dev.platform_data; ++ int ret; ++ ++ chost = kzalloc(sizeof(*chost), GFP_KERNEL); ++ if (chost == NULL) ++ return -ENOMEM; ++ ++ spin_lock_init(&chost->lock); ++ ++ chost->clk_gpio = pdata->clk_gpio; ++ chost->dat_gpio = pdata->dat_gpio; ++ chost->sel_gpio = pdata->sel_gpio; ++ chost->dev = &pdev->dev; ++ ++ ret = gpio_request(chost->clk_gpio, "CBUS clk"); ++ if (ret < 0) ++ goto exit1; ++ ++ ret = gpio_request(chost->dat_gpio, "CBUS data"); ++ if (ret < 0) ++ goto exit2; ++ ++ ret = gpio_request(chost->sel_gpio, "CBUS sel"); ++ if (ret < 0) ++ goto exit3; ++ ++ gpio_direction_output(chost->clk_gpio, 0); ++ gpio_direction_input(chost->dat_gpio); ++ gpio_direction_output(chost->sel_gpio, 1); ++ ++ gpio_set_value(chost->clk_gpio, 1); ++ gpio_set_value(chost->clk_gpio, 0); ++ ++ platform_set_drvdata(pdev, chost); ++ ++ cbus_host = chost; ++ ++ return 0; ++exit3: ++ gpio_free(chost->dat_gpio); ++exit2: ++ gpio_free(chost->clk_gpio); ++exit1: ++ kfree(chost); ++ ++ return ret; ++} ++ ++static void __exit cbus_bus_remove(struct platform_device *pdev) ++{ ++ struct cbus_host *chost = platform_get_drvdata(pdev); ++ ++ gpio_free(chost->sel_gpio); ++ gpio_free(chost->dat_gpio); ++ gpio_free(chost->clk_gpio); ++ ++ kfree(chost); ++ cbus_host = NULL; ++} ++ ++static struct platform_driver cbus_driver = { ++ .remove = __exit_p(cbus_bus_remove), ++ .driver = { ++ .name = "cbus", ++ }, ++}; ++ ++static int __init cbus_bus_init(void) ++{ ++ return platform_driver_probe(&cbus_driver, cbus_bus_probe); ++} ++subsys_initcall(cbus_bus_init); ++ ++static void __exit cbus_bus_exit(void) ++{ ++ platform_driver_unregister(&cbus_driver); ++} ++module_exit(cbus_bus_exit); ++ ++MODULE_DESCRIPTION("CBUS serial protocol"); ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Juha Yrjölä"); ++MODULE_AUTHOR("David Weinehall"); ++MODULE_AUTHOR("Mikko Ylinen"); ++MODULE_AUTHOR("Felipe Balbi <felipe.balbi@nokia.com>"); ++ +Index: linux-2.6.38-rc6/drivers/cbus/cbus.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/cbus.h 2011-02-24 12:04:51.456189134 +0100 +@@ -0,0 +1,29 @@ ++/* ++ * drivers/cbus/cbus.h ++ * ++ * Copyright (C) 2004, 2005 Nokia Corporation ++ * ++ * Written by Juha Yrjölä <juha.yrjola@nokia.com> and ++ * David Weinehall <david.weinehall@nokia.com> ++ * ++ * This file is subject to the terms and conditions of the GNU General ++ * Public License. See the file "COPYING" in the main directory of this ++ * archive for more details. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ */ ++ ++#ifndef __DRIVERS_CBUS_CBUS_H ++#define __DRIVERS_CBUS_CBUS_H ++ ++extern int cbus_read_reg(unsigned dev, unsigned reg); ++extern int cbus_write_reg(unsigned dev, unsigned reg, unsigned val); ++ ++#endif /* __DRIVERS_CBUS_CBUS_H */ +Index: linux-2.6.38-rc6/drivers/cbus/Kconfig +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/Kconfig 2011-02-24 12:04:51.457189107 +0100 +@@ -0,0 +1,75 @@ ++# ++# CBUS device configuration ++# ++ ++menu "CBUS support" ++ ++config CBUS ++ depends on ARCH_OMAP ++ bool "CBUS support on OMAP" ++ ---help--- ++ CBUS is a proprietary serial protocol by Nokia. It is mainly ++ used for accessing Energy Management auxiliary chips. ++ ++ If you want CBUS support, you should say Y here. ++ ++config CBUS_TAHVO ++ depends on CBUS ++ bool "Support for Tahvo" ++ ---help--- ++ Tahvo is a mixed signal ASIC with some system features ++ ++ If you want Tahvo support, you should say Y here. ++ ++config CBUS_TAHVO_USB ++ depends on CBUS_TAHVO && USB ++ tristate "Support for Tahvo USB transceiver" ++ ---help--- ++ If you want Tahvo support for USB transceiver, say Y or M here. ++ ++config CBUS_TAHVO_USB_HOST_BY_DEFAULT ++ depends on CBUS_TAHVO_USB && USB_OTG ++ boolean "Device in USB host mode by default" ++ ---help--- ++ Say Y here, if you want the device to enter USB host mode ++ by default on bootup. ++ ++config CBUS_RETU ++ depends on CBUS ++ bool "Support for Retu" ++ ---help--- ++ Retu is a mixed signal ASIC with some system features ++ ++ If you want Retu support, you should say Y here. ++ ++config CBUS_RETU_POWERBUTTON ++ depends on CBUS_RETU ++ bool "Support for Retu power button" ++ ---help--- ++ The power button on Nokia 770 is connected to the Retu ASIC. ++ ++ If you want support for the Retu power button, you should say Y here. ++ ++config CBUS_RETU_RTC ++ depends on CBUS_RETU && RTC_CLASS ++ tristate "Support for Retu pseudo-RTC" ++ ---help--- ++ Say Y here if you want support for the device that alleges to be an ++ RTC in Retu. This will expose a sysfs interface for it. ++ ++config CBUS_RETU_WDT ++ depends on CBUS_RETU && SYSFS && WATCHDOG ++ tristate "Support for Retu watchdog timer" ++ ---help--- ++ Say Y here if you want support for the watchdog in Retu. This will ++ expose a sysfs interface to grok it. ++ ++config CBUS_RETU_HEADSET ++ depends on CBUS_RETU && SYSFS ++ tristate "Support for headset detection with Retu/Vilma" ++ ---help--- ++ Say Y here if you want support detecting a headset that's connected ++ to Retu/Vilma. Detection state and events are exposed through ++ sysfs. ++ ++endmenu +Index: linux-2.6.38-rc6/drivers/cbus/Makefile +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/Makefile 2011-02-24 12:04:51.458189081 +0100 +@@ -0,0 +1,13 @@ ++# ++# Makefile for CBUS. ++# ++ ++obj-$(CONFIG_CBUS) += cbus.o ++obj-$(CONFIG_CBUS_TAHVO) += tahvo.o ++obj-$(CONFIG_CBUS_RETU) += retu.o ++obj-$(CONFIG_CBUS_TAHVO_USB) += tahvo-usb.o ++ ++obj-$(CONFIG_CBUS_RETU_POWERBUTTON) += retu-pwrbutton.o ++obj-$(CONFIG_CBUS_RETU_RTC) += retu-rtc.o ++obj-$(CONFIG_CBUS_RETU_WDT) += retu-wdt.o ++obj-$(CONFIG_CBUS_RETU_HEADSET) += retu-headset.o +Index: linux-2.6.38-rc6/drivers/cbus/retu.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/retu.c 2011-02-24 12:04:51.458189081 +0100 +@@ -0,0 +1,544 @@ ++/** ++ * drivers/cbus/retu.c ++ * ++ * Support functions for Retu ASIC ++ * ++ * Copyright (C) 2004, 2005 Nokia Corporation ++ * ++ * Written by Juha Yrjölä <juha.yrjola@nokia.com>, ++ * David Weinehall <david.weinehall@nokia.com>, and ++ * Mikko Ylinen <mikko.k.ylinen@nokia.com> ++ * ++ * This file is subject to the terms and conditions of the GNU General ++ * Public License. See the file "COPYING" in the main directory of this ++ * archive for more details. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ */ ++ ++#include <linux/module.h> ++#include <linux/init.h> ++ ++#include <linux/slab.h> ++#include <linux/kernel.h> ++#include <linux/errno.h> ++#include <linux/device.h> ++#include <linux/miscdevice.h> ++#include <linux/poll.h> ++#include <linux/fs.h> ++#include <linux/mutex.h> ++#include <linux/irq.h> ++#include <linux/interrupt.h> ++#include <linux/platform_device.h> ++#include <linux/gpio.h> ++ ++#include <asm/uaccess.h> ++#include <asm/mach-types.h> ++ ++#include <plat/mux.h> ++#include <plat/board.h> ++#include <plat/cbus.h> ++ ++#include "cbus.h" ++#include "retu.h" ++ ++struct retu { ++ /* Device lock */ ++ struct mutex mutex; ++ struct device *dev; ++ ++ int devid; ++ ++ int irq_base; ++ int irq_end; ++ ++ int irq; ++ ++ int ack; ++ bool ack_pending; ++ ++ int mask; ++ bool mask_pending; ++ ++ bool is_vilma; ++}; ++ ++static struct retu *the_retu; ++ ++/** ++ * __retu_read_reg - Read a value from a register in Retu ++ * @retu: pointer to retu structure ++ * @reg: the register address to read from ++ */ ++static int __retu_read_reg(struct retu *retu, unsigned reg) ++{ ++ return cbus_read_reg(retu->devid, reg); ++} ++ ++/** ++ * __retu_write_reg - Writes a value to a register in Retu ++ * @retu: pointer to retu structure ++ * @reg: the register address to write to ++ * @val: the value to write to the register ++ */ ++static void __retu_write_reg(struct retu *retu, unsigned reg, u16 val) ++{ ++ cbus_write_reg(retu->devid, reg, val); ++} ++ ++/** ++ * retu_read_reg - Read a value from a register in Retu ++ * @child: device pointer for the calling child ++ * @reg: the register to read from ++ * ++ * This function returns the contents of the specified register ++ */ ++int retu_read_reg(struct device *child, unsigned reg) ++{ ++ struct retu *retu = dev_get_drvdata(child->parent); ++ ++ return __retu_read_reg(retu, reg); ++} ++EXPORT_SYMBOL_GPL(retu_read_reg); ++ ++/** ++ * retu_write_reg - Write a value to a register in Retu ++ * @child: the pointer to our calling child ++ * @reg: the register to write to ++ * @val: the value to write to the register ++ * ++ * This function writes a value to the specified register ++ */ ++void retu_write_reg(struct device *child, unsigned reg, u16 val) ++{ ++ struct retu *retu = dev_get_drvdata(child->parent); ++ ++ __retu_write_reg(retu, reg, val); ++} ++EXPORT_SYMBOL_GPL(retu_write_reg); ++ ++/** ++ * retu_set_clear_reg_bits - helper function to read/set/clear bits ++ * @child: device pointer to calling child ++ * @reg: the register address ++ * @set: mask for setting bits ++ * @clear: mask for clearing bits ++ */ ++void retu_set_clear_reg_bits(struct device *child, unsigned reg, u16 set, ++ u16 clear) ++{ ++ struct retu *retu = dev_get_drvdata(child->parent); ++ u16 w; ++ ++ mutex_lock(&retu->mutex); ++ w = __retu_read_reg(retu, reg); ++ w &= ~clear; ++ w |= set; ++ __retu_write_reg(retu, reg, w); ++ mutex_unlock(&retu->mutex); ++} ++EXPORT_SYMBOL_GPL(retu_set_clear_reg_bits); ++ ++#define ADC_MAX_CHAN_NUMBER 13 ++ ++/** ++ * retu_read_adc - Reads AD conversion result ++ * @child: device pointer to calling child ++ * @channel: the ADC channel to read from ++ */ ++int retu_read_adc(struct device *child, int channel) ++{ ++ struct retu *retu = dev_get_drvdata(child->parent); ++ int res; ++ ++ if (!retu) ++ return -ENODEV; ++ ++ if (channel < 0 || channel > ADC_MAX_CHAN_NUMBER) ++ return -EINVAL; ++ ++ mutex_lock(&retu->mutex); ++ ++ if ((channel == 8) && retu->is_vilma) { ++ int scr = __retu_read_reg(retu, RETU_REG_ADCSCR); ++ int ch = (__retu_read_reg(retu, RETU_REG_ADCR) >> 10) & 0xf; ++ if (((scr & 0xff) != 0) && (ch != 8)) ++ __retu_write_reg(retu, RETU_REG_ADCSCR, (scr & ~0xff)); ++ } ++ ++ /* Select the channel and read result */ ++ __retu_write_reg(retu, RETU_REG_ADCR, channel << 10); ++ res = __retu_read_reg(retu, RETU_REG_ADCR) & 0x3ff; ++ ++ if (retu->is_vilma) ++ __retu_write_reg(retu, RETU_REG_ADCR, (1 << 13)); ++ ++ /* Unlock retu */ ++ mutex_unlock(&retu->mutex); ++ ++ return res; ++} ++EXPORT_SYMBOL_GPL(retu_read_adc); ++ ++static irqreturn_t retu_irq_handler(int irq, void *_retu) ++{ ++ struct retu *retu = _retu; ++ ++ int i; ++ ++ u16 idr; ++ u16 imr; ++ ++ idr = __retu_read_reg(retu, RETU_REG_IDR); ++ imr = __retu_read_reg(retu, RETU_REG_IMR); ++ idr &= ~imr; ++ ++ if (!idr) { ++ dev_vdbg(retu->dev, "No IRQ, spurious?\n"); ++ return IRQ_NONE; ++ } ++ ++ for (i = 0; idr != 0; i++, idr >>= 1) { ++ if (!(idr & 1)) ++ continue; ++ ++ handle_nested_irq(i); ++ } ++ ++ return IRQ_HANDLED; ++} ++ ++/* -------------------------------------------------------------------------- */ ++ ++static void retu_irq_mask(struct irq_data *data) ++{ ++ struct retu *retu = irq_data_get_irq_chip_data(data); ++ int irq = data->irq; ++ ++ retu->mask |= (1 << (irq - retu->irq_base)); ++ retu->mask_pending = true; ++} ++ ++static void retu_irq_unmask(struct irq_data *data) ++{ ++ struct retu *retu = irq_data_get_irq_chip_data(data); ++ int irq = data->irq; ++ ++ retu->mask &= ~(1 << (irq - retu->irq_base)); ++ retu->mask_pending = true; ++ ++} ++ ++static void retu_irq_ack(struct irq_data *data) ++{ ++ struct retu *retu = irq_data_get_irq_chip_data(data); ++ int irq = data->irq; ++ ++ retu->ack |= (1 << (irq - retu->irq_base)); ++ retu->ack_pending = true; ++} ++ ++static void retu_bus_lock(struct irq_data *data) ++{ ++ struct retu *retu = irq_data_get_irq_chip_data(data); ++ ++ mutex_lock(&retu->mutex); ++} ++ ++static void retu_bus_sync_unlock(struct irq_data *data) ++{ ++ struct retu *retu = irq_data_get_irq_chip_data(data); ++ ++ if (retu->mask_pending) { ++ __retu_write_reg(retu, RETU_REG_IMR, retu->mask); ++ retu->mask_pending = false; ++ } ++ ++ if (retu->ack_pending) { ++ __retu_write_reg(retu, RETU_REG_IDR, retu->ack); ++ retu->ack_pending = false; ++ } ++ ++ mutex_unlock(&retu->mutex); ++} ++ ++static struct irq_chip retu_irq_chip = { ++ .name = "retu", ++ .irq_bus_lock = retu_bus_lock, ++ .irq_bus_sync_unlock = retu_bus_sync_unlock, ++ .irq_mask = retu_irq_mask, ++ .irq_unmask = retu_irq_unmask, ++ .irq_ack = retu_irq_ack, ++}; ++ ++static inline void retu_irq_setup(int irq) ++{ ++#ifdef CONFIG_ARM ++ set_irq_flags(irq, IRQF_VALID); ++#else ++ set_irq_noprobe(irq); ++#endif ++} ++ ++static void retu_irq_init(struct retu *retu) ++{ ++ int base = retu->irq_base; ++ int end = retu->irq_end; ++ int irq; ++ ++ for (irq = base; irq < end; irq++) { ++ set_irq_chip_data(irq, retu); ++ set_irq_chip_and_handler(irq, &retu_irq_chip, ++ handle_simple_irq); ++ set_irq_nested_thread(irq, 1); ++ retu_irq_setup(irq); ++ } ++} ++ ++static void retu_irq_exit(struct retu *retu) ++{ ++ int base = retu->irq_base; ++ int end = retu->irq_end; ++ int irq; ++ ++ for (irq = base; irq < end; irq++) { ++#ifdef CONFIG_ARM ++ set_irq_flags(irq, 0); ++#endif ++ set_irq_chip_and_handler(irq, NULL, NULL); ++ set_irq_chip_data(irq, NULL); ++ } ++} ++ ++/* -------------------------------------------------------------------------- */ ++ ++/** ++ * retu_power_off - Shut down power to system ++ * ++ * This function puts the system in power off state ++ */ ++static void retu_power_off(void) ++{ ++ struct retu *retu = the_retu; ++ unsigned reg; ++ ++ reg = __retu_read_reg(retu, RETU_REG_CC1); ++ ++ /* Ignore power button state */ ++ __retu_write_reg(retu, RETU_REG_CC1, reg | 2); ++ /* Expire watchdog immediately */ ++ __retu_write_reg(retu, RETU_REG_WATCHDOG, 0); ++ /* Wait for poweroff*/ ++ for (;;); ++} ++ ++static struct resource generic_resources[] = { ++ { ++ .start = -EINVAL, /* fixed later */ ++ .flags = IORESOURCE_IRQ, ++ }, ++ { ++ .start = -EINVAL, /* fixed later */ ++ .flags = IORESOURCE_IRQ, ++ }, ++}; ++ ++/** ++ * retu_allocate_child - Allocates one Retu child ++ * @name: name of new child ++ * @parent: parent device for this child ++ */ ++static struct device *retu_allocate_child(char *name, struct device *parent, ++ int irq_base, int irq1, int irq2, int num) ++{ ++ struct platform_device *pdev; ++ int status; ++ ++ pdev = platform_device_alloc(name, -1); ++ if (!pdev) { ++ dev_dbg(parent, "can't allocate %s\n", name); ++ goto err; ++ } ++ ++ pdev->dev.parent = parent; ++ ++ if (num) { ++ generic_resources[0].start = irq_base + irq1; ++ generic_resources[1].start = irq_base + irq2; ++ ++ status = platform_device_add_resources(pdev, ++ generic_resources, num); ++ if (status < 0) { ++ dev_dbg(parent, "can't add resources to %s\n", name); ++ goto err; ++ } ++ } ++ ++ status = platform_device_add(pdev); ++ if (status < 0) { ++ dev_dbg(parent, "can't add %s\n", name); ++ goto err; ++ } ++ ++ return &pdev->dev; ++ ++err: ++ platform_device_put(pdev); ++ ++ return NULL; ++} ++ ++/** ++ * retu_allocate_children - Allocates Retu's children ++ */ ++static int retu_allocate_children(struct device *parent, int irq_base) ++{ ++ struct device *child; ++ ++ child = retu_allocate_child("retu-pwrbutton", parent, irq_base, ++ RETU_INT_PWR, -1, 1); ++ if (!child) ++ return -ENOMEM; ++ ++ child = retu_allocate_child("retu-headset", parent, irq_base, ++ RETU_INT_HOOK, -1, 1); ++ if (!child) ++ return -ENOMEM; ++ ++ child = retu_allocate_child("retu-rtc", parent, irq_base, ++ RETU_INT_RTCS, RETU_INT_RTCA, 2); ++ if (!child) ++ return -ENOMEM; ++ ++ child = retu_allocate_child("retu-wdt", parent, -1, -1, -1, 0); ++ if (!child) ++ return -ENOMEM; ++ ++ return 0; ++} ++ ++/** ++ * retu_probe - Probe for Retu ASIC ++ * @dev: the Retu device ++ * ++ * Probe for the Retu ASIC and allocate memory ++ * for its device-struct if found ++ */ ++static int __init retu_probe(struct platform_device *pdev) ++{ ++ struct retu *retu; ++ struct cbus_retu_platform_data *pdata = pdev->dev.platform_data; ++ ++ int ret = -ENOMEM; ++ int rev; ++ ++ retu = kzalloc(sizeof(*retu), GFP_KERNEL); ++ if (!retu) { ++ dev_err(&pdev->dev, "not enough memory\n"); ++ goto err0; ++ } ++ ++ platform_set_drvdata(pdev, retu); ++ ++ retu->irq = platform_get_irq(pdev, 0); ++ retu->irq_base = pdata->irq_base; ++ retu->irq_end = pdata->irq_end; ++ retu->devid = pdata->devid; ++ the_retu = retu; ++ ++ mutex_init(&retu->mutex); ++ ++ retu_irq_init(retu); ++ ++ rev = __retu_read_reg(retu, RETU_REG_ASICR) & 0xff; ++ if (rev & (1 << 7)) ++ retu->is_vilma = true; ++ ++ dev_info(&pdev->dev, "%s v%d.%d found\n", ++ retu->is_vilma ? "Vilma" : "Retu", ++ (rev >> 4) & 0x07, rev & 0x0f); ++ ++ /* Mask all RETU interrupts */ ++ __retu_write_reg(retu, RETU_REG_IMR, 0xffff); ++ ++ ret = request_threaded_irq(retu->irq, NULL, retu_irq_handler, 0, ++ "retu", retu); ++ if (ret < 0) { ++ dev_err(&pdev->dev, "Unable to register IRQ handler\n"); ++ goto err1; ++ } ++ ++ set_irq_wake(retu->irq, 1); ++ ++ /* Register power off function */ ++ pm_power_off = retu_power_off; ++ ++ ret = retu_allocate_children(&pdev->dev, retu->irq_base); ++ if (ret < 0) { ++ dev_err(&pdev->dev, "Unable to allocate Retu children\n"); ++ goto err2; ++ } ++ ++ return 0; ++ ++err2: ++ pm_power_off = NULL; ++ __retu_write_reg(retu, RETU_REG_IMR, 0xffff); ++ free_irq(retu->irq, retu); ++ ++err1: ++ kfree(retu); ++ the_retu = NULL; ++ ++err0: ++ return ret; ++} ++ ++static int __exit retu_remove(struct platform_device *pdev) ++{ ++ struct retu *retu = platform_get_drvdata(pdev); ++ ++ pm_power_off = NULL; ++ the_retu = NULL; ++ ++ /* Mask all RETU interrupts */ ++ __retu_write_reg(retu, RETU_REG_IMR, 0xffff); ++ ++ free_irq(retu->irq, retu); ++ retu_irq_exit(retu); ++ kfree(retu); ++ ++ return 0; ++} ++ ++static struct platform_driver retu_driver = { ++ .remove = __exit_p(retu_remove), ++ .driver = { ++ .name = "retu", ++ }, ++}; ++ ++static int __init retu_init(void) ++{ ++ return platform_driver_probe(&retu_driver, retu_probe); ++} ++subsys_initcall(retu_init); ++ ++static void __exit retu_exit(void) ++{ ++ platform_driver_unregister(&retu_driver); ++} ++module_exit(retu_exit); ++ ++MODULE_DESCRIPTION("Retu ASIC control"); ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Juha Yrjölä"); ++MODULE_AUTHOR("David Weinehall"); ++MODULE_AUTHOR("Mikko Ylinen"); +Index: linux-2.6.38-rc6/drivers/cbus/retu.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/retu.h 2011-02-24 12:04:51.459189067 +0100 +@@ -0,0 +1,66 @@ ++/** ++ * drivers/cbus/retu.h ++ * ++ * Copyright (C) 2004, 2005 Nokia Corporation ++ * ++ * Written by Juha Yrjölä <juha.yrjola@nokia.com> and ++ * David Weinehall <david.weinehall@nokia.com> ++ * ++ * This file is subject to the terms and conditions of the GNU General ++ * Public License. See the file "COPYING" in the main directory of this ++ * archive for more details. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ */ ++ ++#ifndef __DRIVERS_CBUS_RETU_H ++#define __DRIVERS_CBUS_RETU_H ++ ++#include <linux/types.h> ++ ++/* Registers */ ++#define RETU_REG_ASICR 0x00 /* ASIC ID & revision */ ++#define RETU_REG_IDR 0x01 /* Interrupt ID */ ++#define RETU_REG_IMR 0x02 /* Interrupt mask */ ++#define RETU_REG_RTCDSR 0x03 /* RTC seconds register */ ++#define RETU_REG_RTCHMR 0x04 /* RTC hours and minutes register */ ++#define RETU_REG_RTCHMAR 0x05 /* RTC hours and minutes alarm and time set register */ ++#define RETU_REG_RTCCALR 0x06 /* RTC calibration register */ ++#define RETU_REG_ADCR 0x08 /* ADC result */ ++#define RETU_REG_ADCSCR 0x09 /* ADC sample ctrl */ ++#define RETU_REG_CC1 0x0d /* Common control register 1 */ ++#define RETU_REG_CC2 0x0e /* Common control register 2 */ ++#define RETU_REG_CTRL_CLR 0x0f /* Regulator clear register */ ++#define RETU_REG_CTRL_SET 0x10 /* Regulator set register */ ++#define RETU_REG_STATUS 0x16 /* Status register */ ++#define RETU_REG_WATCHDOG 0x17 /* Watchdog register */ ++#define RETU_REG_AUDTXR 0x18 /* Audio Codec Tx register */ ++#define RETU_REG_MAX 0x1f ++ ++/* Interrupt sources */ ++#define RETU_INT_PWR 0 ++#define RETU_INT_CHAR 1 ++#define RETU_INT_RTCS 2 ++#define RETU_INT_RTCM 3 ++#define RETU_INT_RTCD 4 ++#define RETU_INT_RTCA 5 ++#define RETU_INT_HOOK 6 ++#define RETU_INT_HEAD 7 ++#define RETU_INT_ADCS 8 ++ ++#define MAX_RETU_IRQ_HANDLERS 16 ++ ++int retu_read_reg(struct device *child, unsigned reg); ++void retu_write_reg(struct device *child, unsigned reg, u16 val); ++void retu_set_clear_reg_bits(struct device *child, unsigned reg, u16 set, ++ u16 clear); ++int retu_read_adc(struct device *child, int channel); ++ ++#endif /* __DRIVERS_CBUS_RETU_H */ +Index: linux-2.6.38-rc6/drivers/cbus/retu-headset.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/retu-headset.c 2011-02-24 12:04:51.460189032 +0100 +@@ -0,0 +1,359 @@ ++/** ++ * Retu/Vilma headset detection ++ * ++ * Copyright (C) 2006 Nokia Corporation ++ * ++ * Written by Juha Yrjölä ++ * ++ * This file is subject to the terms and conditions of the GNU General ++ * Public License. See the file "COPYING" in the main directory of this ++ * archive for more details. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ */ ++ ++#include <linux/module.h> ++#include <linux/init.h> ++#include <linux/kernel.h> ++#include <linux/irq.h> ++#include <linux/interrupt.h> ++#include <linux/slab.h> ++#include <linux/delay.h> ++#include <linux/input.h> ++#include <linux/platform_device.h> ++ ++#include "retu.h" ++ ++#define RETU_ADC_CHANNEL_HOOKDET 0x05 ++ ++#define RETU_HEADSET_KEY KEY_PHONE ++ ++struct retu_headset { ++ spinlock_t lock; ++ struct mutex mutex; ++ struct device *dev; ++ struct input_dev *idev; ++ unsigned bias_enabled; ++ unsigned detection_enabled; ++ unsigned pressed; ++ struct timer_list enable_timer; ++ struct timer_list detect_timer; ++ int irq; ++}; ++ ++static void retu_headset_set_bias(struct retu_headset *hs, int enable) ++{ ++ if (enable) { ++ retu_set_clear_reg_bits(hs->dev, RETU_REG_AUDTXR, ++ (1 << 0) | (1 << 1), 0); ++ msleep(2); ++ retu_set_clear_reg_bits(hs->dev, RETU_REG_AUDTXR, ++ 1 << 3, 0); ++ } else { ++ retu_set_clear_reg_bits(hs->dev, RETU_REG_AUDTXR, 0, ++ (1 << 0) | (1 << 1) | (1 << 3)); ++ } ++} ++ ++static void retu_headset_enable(struct retu_headset *hs) ++{ ++ mutex_lock(&hs->mutex); ++ if (!hs->bias_enabled) { ++ hs->bias_enabled = 1; ++ retu_headset_set_bias(hs, 1); ++ } ++ mutex_unlock(&hs->mutex); ++} ++ ++static void retu_headset_disable(struct retu_headset *hs) ++{ ++ mutex_lock(&hs->mutex); ++ if (hs->bias_enabled) { ++ hs->bias_enabled = 0; ++ retu_headset_set_bias(hs, 0); ++ } ++ mutex_unlock(&hs->mutex); ++} ++ ++static void retu_headset_det_enable(struct retu_headset *hs) ++{ ++ mutex_lock(&hs->mutex); ++ if (!hs->detection_enabled) { ++ hs->detection_enabled = 1; ++ retu_set_clear_reg_bits(hs->dev, RETU_REG_CC1, ++ (1 << 10) | (1 << 8), 0); ++ } ++ mutex_unlock(&hs->mutex); ++} ++ ++static void retu_headset_det_disable(struct retu_headset *hs) ++{ ++ unsigned long flags; ++ ++ mutex_lock(&hs->mutex); ++ if (hs->detection_enabled) { ++ hs->detection_enabled = 0; ++ del_timer_sync(&hs->enable_timer); ++ del_timer_sync(&hs->detect_timer); ++ spin_lock_irqsave(&hs->lock, flags); ++ if (hs->pressed) ++ input_report_key(hs->idev, RETU_HEADSET_KEY, 0); ++ spin_unlock_irqrestore(&hs->lock, flags); ++ retu_set_clear_reg_bits(hs->dev, RETU_REG_CC1, 0, ++ (1 << 10) | (1 << 8)); ++ } ++ mutex_unlock(&hs->mutex); ++} ++ ++static ssize_t retu_headset_hookdet_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ int val; ++ ++ val = retu_read_adc(dev, RETU_ADC_CHANNEL_HOOKDET); ++ return sprintf(buf, "%d\n", val); ++} ++ ++static DEVICE_ATTR(hookdet, S_IRUGO, retu_headset_hookdet_show, NULL); ++ ++static ssize_t retu_headset_enable_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct retu_headset *hs = dev_get_drvdata(dev); ++ ++ return sprintf(buf, "%u\n", hs->bias_enabled); ++} ++ ++static ssize_t retu_headset_enable_store(struct device *dev, ++ struct device_attribute *attr, ++ const char *buf, size_t count) ++{ ++ struct retu_headset *hs = dev_get_drvdata(dev); ++ int enable; ++ ++ if (sscanf(buf, "%u", &enable) != 1) ++ return -EINVAL; ++ if (enable) ++ retu_headset_enable(hs); ++ else ++ retu_headset_disable(hs); ++ return count; ++} ++ ++static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR | S_IWGRP, ++ retu_headset_enable_show, retu_headset_enable_store); ++ ++static ssize_t retu_headset_enable_det_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct retu_headset *hs = dev_get_drvdata(dev); ++ ++ return sprintf(buf, "%u\n", hs->detection_enabled); ++} ++ ++static ssize_t retu_headset_enable_det_store(struct device *dev, ++ struct device_attribute *attr, ++ const char *buf, size_t count) ++{ ++ struct retu_headset *hs = dev_get_drvdata(dev); ++ int enable; ++ ++ if (sscanf(buf, "%u", &enable) != 1) ++ return -EINVAL; ++ if (enable) ++ retu_headset_det_enable(hs); ++ else ++ retu_headset_det_disable(hs); ++ return count; ++} ++ ++static DEVICE_ATTR(enable_det, S_IRUGO | S_IWUSR | S_IWGRP, ++ retu_headset_enable_det_show, ++ retu_headset_enable_det_store); ++ ++static irqreturn_t retu_headset_hook_interrupt(int irq, void *_hs) ++{ ++ struct retu_headset *hs = _hs; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&hs->lock, flags); ++ if (!hs->pressed) { ++ /* Headset button was just pressed down. */ ++ hs->pressed = 1; ++ input_report_key(hs->idev, RETU_HEADSET_KEY, 1); ++ } ++ spin_unlock_irqrestore(&hs->lock, flags); ++ retu_set_clear_reg_bits(hs->dev, RETU_REG_CC1, 0, ++ (1 << 10) | (1 << 8)); ++ mod_timer(&hs->enable_timer, jiffies + msecs_to_jiffies(50)); ++ ++ return IRQ_HANDLED; ++} ++ ++static void retu_headset_enable_timer(unsigned long arg) ++{ ++ struct retu_headset *hs = (struct retu_headset *) arg; ++ ++ retu_set_clear_reg_bits(hs->dev, RETU_REG_CC1, ++ (1 << 10) | (1 << 8), 0); ++ mod_timer(&hs->detect_timer, jiffies + msecs_to_jiffies(350)); ++} ++ ++static void retu_headset_detect_timer(unsigned long arg) ++{ ++ struct retu_headset *hs = (struct retu_headset *) arg; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&hs->lock, flags); ++ if (hs->pressed) { ++ hs->pressed = 0; ++ input_report_key(hs->idev, RETU_HEADSET_KEY, 0); ++ } ++ spin_unlock_irqrestore(&hs->lock, flags); ++} ++ ++static int __init retu_headset_probe(struct platform_device *pdev) ++{ ++ struct retu_headset *hs; ++ int irq; ++ int r; ++ ++ hs = kzalloc(sizeof(*hs), GFP_KERNEL); ++ if (hs == NULL) ++ return -ENOMEM; ++ ++ hs->dev = &pdev->dev; ++ ++ hs->idev = input_allocate_device(); ++ if (hs->idev == NULL) { ++ r = -ENOMEM; ++ goto err1; ++ } ++ hs->idev->name = "retu-headset"; ++ hs->idev->dev.parent = &pdev->dev; ++ set_bit(EV_KEY, hs->idev->evbit); ++ set_bit(RETU_HEADSET_KEY, hs->idev->keybit); ++ r = input_register_device(hs->idev); ++ if (r < 0) ++ goto err2; ++ ++ r = device_create_file(&pdev->dev, &dev_attr_hookdet); ++ if (r < 0) ++ goto err3; ++ r = device_create_file(&pdev->dev, &dev_attr_enable); ++ if (r < 0) ++ goto err4; ++ r = device_create_file(&pdev->dev, &dev_attr_enable_det); ++ if (r < 0) ++ goto err5; ++ platform_set_drvdata(pdev, hs); ++ ++ spin_lock_init(&hs->lock); ++ mutex_init(&hs->mutex); ++ setup_timer(&hs->enable_timer, retu_headset_enable_timer, ++ (unsigned long) hs); ++ setup_timer(&hs->detect_timer, retu_headset_detect_timer, ++ (unsigned long) hs); ++ ++ irq = platform_get_irq(pdev, 0); ++ hs->irq = irq; ++ ++ r = request_threaded_irq(irq, NULL, retu_headset_hook_interrupt, 0, ++ "hookdet", hs); ++ if (r != 0) { ++ dev_err(&pdev->dev, "hookdet IRQ not available\n"); ++ goto err6; ++ } ++ ++ return 0; ++err6: ++ device_remove_file(&pdev->dev, &dev_attr_enable_det); ++err5: ++ device_remove_file(&pdev->dev, &dev_attr_enable); ++err4: ++ device_remove_file(&pdev->dev, &dev_attr_hookdet); ++err3: ++ input_unregister_device(hs->idev); ++err2: ++ input_free_device(hs->idev); ++err1: ++ kfree(hs); ++ return r; ++} ++ ++static int retu_headset_remove(struct platform_device *pdev) ++{ ++ struct retu_headset *hs = platform_get_drvdata(pdev); ++ ++ device_remove_file(&pdev->dev, &dev_attr_hookdet); ++ device_remove_file(&pdev->dev, &dev_attr_enable); ++ device_remove_file(&pdev->dev, &dev_attr_enable_det); ++ retu_headset_disable(hs); ++ retu_headset_det_disable(hs); ++ free_irq(hs->irq, hs); ++ input_unregister_device(hs->idev); ++ input_free_device(hs->idev); ++ ++ return 0; ++} ++ ++static int retu_headset_suspend(struct platform_device *pdev, ++ pm_message_t mesg) ++{ ++ struct retu_headset *hs = platform_get_drvdata(pdev); ++ ++ mutex_lock(&hs->mutex); ++ if (hs->bias_enabled) ++ retu_headset_set_bias(hs, 0); ++ mutex_unlock(&hs->mutex); ++ ++ return 0; ++} ++ ++static int retu_headset_resume(struct platform_device *pdev) ++{ ++ struct retu_headset *hs = platform_get_drvdata(pdev); ++ ++ mutex_lock(&hs->mutex); ++ if (hs->bias_enabled) ++ retu_headset_set_bias(hs, 1); ++ mutex_unlock(&hs->mutex); ++ ++ return 0; ++} ++ ++static struct platform_driver retu_headset_driver = { ++ .remove = retu_headset_remove, ++ .suspend = retu_headset_suspend, ++ .resume = retu_headset_resume, ++ .driver = { ++ .name = "retu-headset", ++ }, ++}; ++ ++static int __init retu_headset_init(void) ++{ ++ return platform_driver_probe(&retu_headset_driver, retu_headset_probe); ++} ++ ++static void __exit retu_headset_exit(void) ++{ ++ platform_driver_unregister(&retu_headset_driver); ++} ++ ++module_init(retu_headset_init); ++module_exit(retu_headset_exit); ++ ++MODULE_DESCRIPTION("Retu/Vilma headset detection"); ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Juha Yrjölä"); +Index: linux-2.6.38-rc6/drivers/cbus/retu-pwrbutton.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/retu-pwrbutton.c 2011-02-24 12:04:51.460189032 +0100 +@@ -0,0 +1,165 @@ ++/** ++ * drivers/cbus/retu-pwrbutton.c ++ * ++ * Driver for sending retu power button event to input-layer ++ * ++ * Copyright (C) 2004-2010 Nokia Corporation ++ * ++ * Written by ++ * Ari Saastamoinen <ari.saastamoinen@elektrobit.com> ++ * Juha Yrjola <juha.yrjola@solidboot.com> ++ * ++ * Contact: Felipe Balbi <felipe.balbi@nokia.com> ++ * ++ * This file is subject to the terms and conditions of the GNU General ++ * Public License. See the file "COPYING" in the main directory of this ++ * archive for more details. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ */ ++ ++#include <linux/module.h> ++#include <linux/init.h> ++#include <linux/kernel.h> ++#include <linux/errno.h> ++#include <linux/input.h> ++#include <linux/jiffies.h> ++#include <linux/bitops.h> ++#include <linux/irq.h> ++#include <linux/interrupt.h> ++#include <linux/platform_device.h> ++#include <linux/slab.h> ++ ++#include "retu.h" ++ ++#define RETU_STATUS_PWRONX (1 << 5) ++ ++#define PWRBTN_DELAY 20 ++#define PWRBTN_UP 0 ++#define PWRBTN_PRESSED 1 ++ ++struct retu_pwrbutton { ++ struct input_dev *idev; ++ struct device *dev; ++ ++ int state; ++ int irq; ++}; ++ ++static irqreturn_t retubutton_irq(int irq, void *_pwr) ++{ ++ struct retu_pwrbutton *pwr = _pwr; ++ int state; ++ ++ if (retu_read_reg(pwr->dev, RETU_REG_STATUS) & RETU_STATUS_PWRONX) ++ state = PWRBTN_UP; ++ else ++ state = PWRBTN_PRESSED; ++ ++ if (pwr->state != state) { ++ input_report_key(pwr->idev, KEY_POWER, state); ++ input_sync(pwr->idev); ++ pwr->state = state; ++ } ++ ++ return IRQ_HANDLED; ++} ++ ++static int __init retubutton_probe(struct platform_device *pdev) ++{ ++ struct retu_pwrbutton *pwr; ++ int ret = 0; ++ ++ pwr = kzalloc(sizeof(*pwr), GFP_KERNEL); ++ if (!pwr) { ++ dev_err(&pdev->dev, "not enough memory\n"); ++ ret = -ENOMEM; ++ goto err0; ++ } ++ ++ pwr->dev = &pdev->dev; ++ pwr->irq = platform_get_irq(pdev, 0); ++ platform_set_drvdata(pdev, pwr); ++ ++ ret = request_threaded_irq(pwr->irq, NULL, retubutton_irq, 0, ++ "retu-pwrbutton", pwr); ++ if (ret < 0) { ++ dev_err(&pdev->dev, "Cannot allocate irq\n"); ++ goto err1; ++ } ++ ++ pwr->idev = input_allocate_device(); ++ if (!pwr->idev) { ++ dev_err(&pdev->dev, "can't allocate input device\n"); ++ ret = -ENOMEM; ++ goto err2; ++ } ++ ++ pwr->idev->evbit[0] = BIT_MASK(EV_KEY); ++ pwr->idev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER); ++ pwr->idev->name = "retu-pwrbutton"; ++ ++ ret = input_register_device(pwr->idev); ++ if (ret < 0) { ++ dev_err(&pdev->dev, "failed to register input device\n"); ++ goto err3; ++ } ++ ++ return 0; ++ ++err3: ++ input_free_device(pwr->idev); ++ ++err2: ++ free_irq(pwr->irq, pwr); ++ ++err1: ++ kfree(pwr); ++ ++err0: ++ return ret; ++} ++ ++static int __exit retubutton_remove(struct platform_device *pdev) ++{ ++ struct retu_pwrbutton *pwr = platform_get_drvdata(pdev); ++ ++ free_irq(pwr->irq, pwr); ++ input_unregister_device(pwr->idev); ++ input_free_device(pwr->idev); ++ kfree(pwr); ++ ++ return 0; ++} ++ ++static struct platform_driver retu_pwrbutton_driver = { ++ .remove = __exit_p(retubutton_remove), ++ .driver = { ++ .name = "retu-pwrbutton", ++ }, ++}; ++ ++static int __init retubutton_init(void) ++{ ++ return platform_driver_probe(&retu_pwrbutton_driver, retubutton_probe); ++} ++module_init(retubutton_init); ++ ++static void __exit retubutton_exit(void) ++{ ++ platform_driver_unregister(&retu_pwrbutton_driver); ++} ++module_exit(retubutton_exit); ++ ++MODULE_DESCRIPTION("Retu Power Button"); ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Ari Saastamoinen"); ++MODULE_AUTHOR("Felipe Balbi <felipe.balbi@nokia.com>"); ++ +Index: linux-2.6.38-rc6/drivers/cbus/retu-rtc.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/retu-rtc.c 2011-02-24 12:04:51.461188993 +0100 +@@ -0,0 +1,287 @@ ++/** ++ * drivers/cbus/retu-rtc.c ++ * ++ * Support for Retu RTC ++ * ++ * Copyright (C) 2004, 2005 Nokia Corporation ++ * ++ * Written by Paul Mundt <paul.mundt@nokia.com> and ++ * Igor Stoppa <igor.stoppa@nokia.com> ++ * ++ * The Retu RTC is essentially a partial read-only RTC that gives us Retu's ++ * idea of what time actually is. It's left as a userspace excercise to map ++ * this back to time in the real world and ensure that calibration settings ++ * are sane to compensate for any horrible drift (on account of not being able ++ * to set the clock to anything). ++ * ++ * Days are semi-writeable. Namely, Retu will only track 255 days for us ++ * consecutively, after which the counter is explicitly stuck at 255 until ++ * someone comes along and clears it with a write. In the event that no one ++ * comes along and clears it, we no longer have any idea what day it is. ++ * ++ * This file is subject to the terms and conditions of the GNU General ++ * Public License. See the file "COPYING" in the main directory of this ++ * archive for more details. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ */ ++ ++#include <linux/device.h> ++#include <linux/init.h> ++#include <linux/kernel.h> ++#include <linux/slab.h> ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/mutex.h> ++#include <linux/rtc.h> ++ ++#include "cbus.h" ++#include "retu.h" ++ ++struct retu_rtc { ++ /* device lock */ ++ struct mutex mutex; ++ struct device *dev; ++ struct rtc_device *rtc; ++ ++ u16 alarm_expired; ++ int irq_rtcs; ++ int irq_rtca; ++}; ++ ++static void retu_rtc_do_reset(struct retu_rtc *rtc) ++{ ++ u16 ccr1; ++ ++ ccr1 = retu_read_reg(rtc->dev, RETU_REG_CC1); ++ /* RTC in reset */ ++ retu_write_reg(rtc->dev, RETU_REG_CC1, ccr1 | 0x0001); ++ /* RTC in normal operating mode */ ++ retu_write_reg(rtc->dev, RETU_REG_CC1, ccr1 & ~0x0001); ++ ++ /* Disable alarm and RTC WD */ ++ retu_write_reg(rtc->dev, RETU_REG_RTCHMAR, 0x7f3f); ++ /* Set Calibration register to default value */ ++ retu_write_reg(rtc->dev, RETU_REG_RTCCALR, 0x00c0); ++ ++ rtc->alarm_expired = 0; ++} ++ ++static irqreturn_t retu_rtc_interrupt(int irq, void *_rtc) ++{ ++ struct retu_rtc *rtc = _rtc; ++ ++ mutex_lock(&rtc->mutex); ++ rtc->alarm_expired = 1; ++ retu_write_reg(rtc->dev, RETU_REG_RTCHMAR, (24 << 8) | 60); ++ mutex_unlock(&rtc->mutex); ++ ++ return IRQ_HANDLED; ++} ++ ++static int retu_rtc_init_irq(struct retu_rtc *rtc) ++{ ++ int irq; ++ int ret; ++ ++ irq = platform_get_irq(to_platform_device(rtc->dev), 0); ++ rtc->irq_rtcs = irq; ++ ++ irq = platform_get_irq(to_platform_device(rtc->dev), 1); ++ rtc->irq_rtca = irq; ++ ++ ret = request_threaded_irq(rtc->irq_rtcs, NULL, retu_rtc_interrupt, ++ 0, "RTCS", rtc); ++ if (ret != 0) ++ return ret; ++ ++ ret = request_threaded_irq(rtc->irq_rtca, NULL, retu_rtc_interrupt, ++ 0, "RTCA", rtc); ++ if (ret != 0) { ++ free_irq(rtc->irq_rtcs, rtc); ++ return ret; ++ } ++ ++ return 0; ++} ++ ++static int retu_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) ++{ ++ struct retu_rtc *rtc = dev_get_drvdata(dev); ++ u16 chmar; ++ ++ mutex_lock(&rtc->mutex); ++ ++ chmar = ((alm->time.tm_hour & 0x1f) << 8) | (alm->time.tm_min & 0x3f); ++ retu_write_reg(rtc->dev, RETU_REG_RTCHMAR, chmar); ++ ++ mutex_unlock(&rtc->mutex); ++ ++ return 0; ++} ++ ++static int retu_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) ++{ ++ struct retu_rtc *rtc = dev_get_drvdata(dev); ++ u16 chmar; ++ ++ mutex_lock(&rtc->mutex); ++ ++ chmar = retu_read_reg(rtc->dev, RETU_REG_RTCHMAR); ++ ++ alm->time.tm_hour = (chmar >> 8) & 0x1f; ++ alm->time.tm_min = chmar & 0x3f; ++ alm->enabled = !!rtc->alarm_expired; ++ ++ mutex_unlock(&rtc->mutex); ++ ++ return 0; ++} ++ ++static int retu_rtc_set_time(struct device *dev, struct rtc_time *tm) ++{ ++ struct retu_rtc *rtc = dev_get_drvdata(dev); ++ u16 dsr; ++ u16 hmr; ++ ++ dsr = ((tm->tm_mday & 0xff) << 8) | (tm->tm_hour & 0xff); ++ hmr = ((tm->tm_min & 0xff) << 8) | (tm->tm_sec & 0xff); ++ ++ mutex_lock(&rtc->mutex); ++ ++ retu_write_reg(rtc->dev, RETU_REG_RTCDSR, dsr); ++ retu_write_reg(rtc->dev, RETU_REG_RTCHMR, hmr); ++ ++ mutex_unlock(&rtc->mutex); ++ ++ return 0; ++} ++ ++static int retu_rtc_read_time(struct device *dev, struct rtc_time *tm) ++{ ++ struct retu_rtc *rtc = dev_get_drvdata(dev); ++ u16 dsr; ++ u16 hmr; ++ ++ /* ++ * DSR holds days and hours ++ * HMR hols minutes and seconds ++ * ++ * both are 16 bit registers with 8-bit for each field. ++ */ ++ ++ mutex_lock(&rtc->mutex); ++ ++ dsr = retu_read_reg(rtc->dev, RETU_REG_RTCDSR); ++ hmr = retu_read_reg(rtc->dev, RETU_REG_RTCHMR); ++ ++ tm->tm_sec = hmr & 0xff; ++ tm->tm_min = hmr >> 8; ++ tm->tm_hour = dsr & 0xff; ++ tm->tm_mday = dsr >> 8; ++ ++ mutex_unlock(&rtc->mutex); ++ ++ return 0; ++} ++ ++static struct rtc_class_ops retu_rtc_ops = { ++ .read_time = retu_rtc_read_time, ++ .set_time = retu_rtc_set_time, ++ .read_alarm = retu_rtc_read_alarm, ++ .set_alarm = retu_rtc_set_alarm, ++}; ++ ++static int __init retu_rtc_probe(struct platform_device *pdev) ++{ ++ struct retu_rtc *rtc; ++ int r; ++ ++ rtc = kzalloc(sizeof(*rtc), GFP_KERNEL); ++ if (!rtc) { ++ dev_err(&pdev->dev, "not enough memory\n"); ++ r = -ENOMEM; ++ goto err0; ++ } ++ ++ rtc->dev = &pdev->dev; ++ platform_set_drvdata(pdev, rtc); ++ mutex_init(&rtc->mutex); ++ ++ rtc->alarm_expired = retu_read_reg(rtc->dev, RETU_REG_IDR) & ++ (0x1 << RETU_INT_RTCA); ++ ++ r = retu_rtc_init_irq(rtc); ++ if (r < 0) { ++ dev_err(&pdev->dev, "failed to request retu irq\n"); ++ goto err1; ++ } ++ ++ /* If the calibration register is zero, we've probably lost power */ ++ if (!(retu_read_reg(rtc->dev, RETU_REG_RTCCALR) & 0x00ff)) ++ retu_rtc_do_reset(rtc); ++ ++ rtc->rtc = rtc_device_register(pdev->name, &pdev->dev, & ++ retu_rtc_ops, THIS_MODULE); ++ if (IS_ERR(rtc->rtc)) { ++ dev_err(&pdev->dev, "can't register RTC device\n"); ++ goto err2; ++ } ++ ++ return 0; ++ ++err2: ++ free_irq(rtc->irq_rtcs, rtc); ++ free_irq(rtc->irq_rtca, rtc); ++ ++err1: ++ kfree(rtc); ++ ++err0: ++ return r; ++} ++ ++static int __devexit retu_rtc_remove(struct platform_device *pdev) ++{ ++ struct retu_rtc *rtc = platform_get_drvdata(pdev); ++ ++ free_irq(rtc->irq_rtcs, rtc); ++ free_irq(rtc->irq_rtca, rtc); ++ rtc_device_unregister(rtc->rtc); ++ kfree(rtc); ++ ++ return 0; ++} ++ ++static struct platform_driver retu_rtc_driver = { ++ .remove = __exit_p(retu_rtc_remove), ++ .driver = { ++ .name = "retu-rtc", ++ }, ++}; ++ ++static int __init retu_rtc_init(void) ++{ ++ return platform_driver_probe(&retu_rtc_driver, retu_rtc_probe); ++} ++module_init(retu_rtc_init); ++ ++static void __exit retu_rtc_exit(void) ++{ ++ platform_driver_unregister(&retu_rtc_driver); ++} ++module_exit(retu_rtc_exit); ++ ++MODULE_DESCRIPTION("Retu RTC"); ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Paul Mundt"); ++MODULE_AUTHOR("Igor Stoppa"); ++MODULE_AUTHOR("Felipe Balbi <felipe.balbi@nokia.com>"); ++ +Index: linux-2.6.38-rc6/drivers/cbus/retu-wdt.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/retu-wdt.c 2011-02-24 12:04:51.461188993 +0100 +@@ -0,0 +1,358 @@ ++/** ++ * drivers/cbus/retu-wdt.c ++ * ++ * Driver for Retu watchdog ++ * ++ * Copyright (C) 2004, 2005 Nokia Corporation ++ * ++ * Written by Amit Kucheria <amit.kucheria@nokia.com> ++ * ++ * This file is subject to the terms and conditions of the GNU General ++ * Public License. See the file "COPYING" in the main directory of this ++ * archive for more details. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/slab.h> ++#include <linux/module.h> ++#include <linux/device.h> ++#include <linux/init.h> ++#include <linux/fs.h> ++#include <linux/io.h> ++#include <linux/platform_device.h> ++ ++#include <linux/completion.h> ++#include <linux/errno.h> ++#include <linux/moduleparam.h> ++#include <linux/miscdevice.h> ++#include <linux/watchdog.h> ++ ++#include <asm/uaccess.h> ++ ++#include <plat/prcm.h> ++ ++#include "cbus.h" ++#include "retu.h" ++ ++/* Watchdog timeout in seconds */ ++#define RETU_WDT_MIN_TIMER 0 ++#define RETU_WDT_DEFAULT_TIMER 32 ++#define RETU_WDT_MAX_TIMER 63 ++ ++static DEFINE_MUTEX(retu_wdt_mutex); ++ ++/* Current period of watchdog */ ++static unsigned int period_val = RETU_WDT_DEFAULT_TIMER; ++static int counter_param = RETU_WDT_MAX_TIMER; ++ ++struct retu_wdt_dev { ++ struct device *dev; ++ int users; ++ struct miscdevice retu_wdt_miscdev; ++ struct timer_list ping_timer; ++}; ++ ++static struct retu_wdt_dev *retu_wdt; ++ ++static void retu_wdt_set_ping_timer(unsigned long enable); ++ ++static int _retu_modify_counter(unsigned int new) ++{ ++ if (retu_wdt) ++ retu_write_reg(retu_wdt->dev, RETU_REG_WATCHDOG, (u16)new); ++ ++ return 0; ++} ++ ++static int retu_modify_counter(unsigned int new) ++{ ++ if (new < RETU_WDT_MIN_TIMER || new > RETU_WDT_MAX_TIMER) ++ return -EINVAL; ++ ++ mutex_lock(&retu_wdt_mutex); ++ period_val = new; ++ _retu_modify_counter(period_val); ++ mutex_unlock(&retu_wdt_mutex); ++ ++ return 0; ++} ++ ++static ssize_t retu_wdt_period_show(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ /* Show current max counter */ ++ return sprintf(buf, "%u\n", (u16)period_val); ++} ++ ++/* ++ * Note: This inteface is non-standard and likely to disappear! ++ * Use /dev/watchdog instead, that's the standard. ++ */ ++static ssize_t retu_wdt_period_store(struct device *dev, ++ struct device_attribute *attr, ++ const char *buf, size_t count) ++{ ++ unsigned int new_period; ++ int ret; ++ ++#ifdef CONFIG_WATCHDOG_NOWAYOUT ++ retu_wdt_set_ping_timer(0); ++#endif ++ ++ if (sscanf(buf, "%u", &new_period) != 1) { ++ printk(KERN_ALERT "retu_wdt_period_store: Invalid input\n"); ++ return -EINVAL; ++ } ++ ++ ret = retu_modify_counter(new_period); ++ if (ret < 0) ++ return ret; ++ ++ return strnlen(buf, count); ++} ++ ++static ssize_t retu_wdt_counter_show(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ u16 counter; ++ ++ /* Show current value in watchdog counter */ ++ counter = retu_read_reg(dev, RETU_REG_WATCHDOG); ++ ++ /* Only the 5 LSB are important */ ++ return snprintf(buf, PAGE_SIZE, "%u\n", (counter & 0x3F)); ++} ++ ++static DEVICE_ATTR(period, S_IRUGO | S_IWUSR, retu_wdt_period_show, \ ++ retu_wdt_period_store); ++static DEVICE_ATTR(counter, S_IRUGO, retu_wdt_counter_show, NULL); ++ ++/*----------------------------------------------------------------------------*/ ++ ++/* ++ * Since retu watchdog cannot be disabled in hardware, we must kick it ++ * with a timer until userspace watchdog software takes over. Do this ++ * unless /dev/watchdog is open or CONFIG_WATCHDOG_NOWAYOUT is set. ++ */ ++static void retu_wdt_set_ping_timer(unsigned long enable) ++{ ++ _retu_modify_counter(RETU_WDT_MAX_TIMER); ++ if (enable) ++ mod_timer(&retu_wdt->ping_timer, ++ jiffies + RETU_WDT_DEFAULT_TIMER * HZ); ++ else ++ del_timer_sync(&retu_wdt->ping_timer); ++} ++ ++static int retu_wdt_open(struct inode *inode, struct file *file) ++{ ++ if (test_and_set_bit(1, (unsigned long *)&(retu_wdt->users))) ++ return -EBUSY; ++ ++ file->private_data = (void *)retu_wdt; ++ retu_wdt_set_ping_timer(0); ++ ++ return nonseekable_open(inode, file); ++} ++ ++static int retu_wdt_release(struct inode *inode, struct file *file) ++{ ++ struct retu_wdt_dev *wdev = file->private_data; ++ ++#ifndef CONFIG_WATCHDOG_NOWAYOUT ++ retu_wdt_set_ping_timer(1); ++#endif ++ wdev->users = 0; ++ ++ return 0; ++} ++ ++static ssize_t retu_wdt_write(struct file *file, const char __user *data, ++ size_t len, loff_t *ppos) ++{ ++ if (len) ++ retu_modify_counter(RETU_WDT_MAX_TIMER); ++ ++ return len; ++} ++ ++static long retu_wdt_ioctl(struct file *file, unsigned int cmd, ++ unsigned long arg) ++{ ++ int new_margin; ++ ++ static struct watchdog_info ident = { ++ .identity = "Retu Watchdog", ++ .options = WDIOF_SETTIMEOUT, ++ .firmware_version = 0, ++ }; ++ ++ switch (cmd) { ++ default: ++ return -ENOTTY; ++ case WDIOC_GETSUPPORT: ++ return copy_to_user((struct watchdog_info __user *)arg, &ident, ++ sizeof(ident)); ++ case WDIOC_GETSTATUS: ++ return put_user(0, (int __user *)arg); ++ case WDIOC_GETBOOTSTATUS: ++ if (cpu_is_omap16xx()) ++ return put_user(omap_readw(ARM_SYSST), ++ (int __user *)arg); ++ if (cpu_is_omap24xx()) ++ return put_user(omap_prcm_get_reset_sources(), ++ (int __user *)arg); ++ case WDIOC_KEEPALIVE: ++ retu_modify_counter(RETU_WDT_MAX_TIMER); ++ break; ++ case WDIOC_SETTIMEOUT: ++ if (get_user(new_margin, (int __user *)arg)) ++ return -EFAULT; ++ retu_modify_counter(new_margin); ++ /* Fall through */ ++ case WDIOC_GETTIMEOUT: ++ return put_user(period_val, (int __user *)arg); ++ } ++ ++ return 0; ++} ++ ++/* Start kicking retu watchdog until user space starts doing the kicking */ ++static int __devinit retu_wdt_ping(void) ++{ ++#ifdef CONFIG_WATCHDOG_NOWAYOUT ++ retu_modify_counter(RETU_WDT_MAX_TIMER); ++#else ++ retu_wdt_set_ping_timer(1); ++#endif ++ ++ return 0; ++} ++ ++static const struct file_operations retu_wdt_fops = { ++ .owner = THIS_MODULE, ++ .write = retu_wdt_write, ++ .unlocked_ioctl = retu_wdt_ioctl, ++ .open = retu_wdt_open, ++ .release = retu_wdt_release, ++}; ++ ++/*----------------------------------------------------------------------------*/ ++ ++static int __init retu_wdt_probe(struct platform_device *pdev) ++{ ++ struct retu_wdt_dev *wdev; ++ int ret; ++ ++ wdev = kzalloc(sizeof(struct retu_wdt_dev), GFP_KERNEL); ++ if (!wdev) ++ return -ENOMEM; ++ ++ wdev->dev = &pdev->dev; ++ wdev->users = 0; ++ ++ ret = device_create_file(&pdev->dev, &dev_attr_period); ++ if (ret) { ++ dev_err(&pdev->dev, "Error creating sysfs period\n"); ++ goto free1; ++ } ++ ++ ret = device_create_file(&pdev->dev, &dev_attr_counter); ++ if (ret) { ++ dev_err(&pdev->dev, "Error creating sysfs counter\n"); ++ goto free2; ++ } ++ ++ platform_set_drvdata(pdev, wdev); ++ retu_wdt = wdev; ++ wdev->retu_wdt_miscdev.parent = &pdev->dev; ++ wdev->retu_wdt_miscdev.minor = WATCHDOG_MINOR; ++ wdev->retu_wdt_miscdev.name = "watchdog"; ++ wdev->retu_wdt_miscdev.fops = &retu_wdt_fops; ++ ++ ret = misc_register(&(wdev->retu_wdt_miscdev)); ++ if (ret) ++ goto free3; ++ ++ setup_timer(&wdev->ping_timer, retu_wdt_set_ping_timer, 1); ++ ++ /* passed as module parameter? */ ++ ret = retu_modify_counter(counter_param); ++ if (ret == -EINVAL) { ++ ret = retu_modify_counter(RETU_WDT_DEFAULT_TIMER); ++ dev_dbg(&pdev->dev, "Initializing to default value\n"); ++ } ++ ++ /* Kick the watchdog for kernel booting to finish */ ++ retu_modify_counter(RETU_WDT_MAX_TIMER); ++ ++ ret = retu_wdt_ping(); ++ if (ret < 0) { ++ dev_err(&pdev->dev, "Failed to ping\n"); ++ goto free4; ++ } ++ ++ return 0; ++ ++free4: ++ misc_deregister(&wdev->retu_wdt_miscdev); ++ ++free3: ++ device_remove_file(&pdev->dev, &dev_attr_counter); ++ ++free2: ++ device_remove_file(&pdev->dev, &dev_attr_period); ++ ++free1: ++ kfree(wdev); ++ ++ return ret; ++} ++ ++static int __devexit retu_wdt_remove(struct platform_device *pdev) ++{ ++ struct retu_wdt_dev *wdev; ++ ++ wdev = platform_get_drvdata(pdev); ++ misc_deregister(&wdev->retu_wdt_miscdev); ++ device_remove_file(&pdev->dev, &dev_attr_period); ++ device_remove_file(&pdev->dev, &dev_attr_counter); ++ kfree(wdev); ++ ++ return 0; ++} ++ ++static struct platform_driver retu_wdt_driver = { ++ .remove = __exit_p(retu_wdt_remove), ++ .driver = { ++ .name = "retu-wdt", ++ }, ++}; ++ ++static int __init retu_wdt_init(void) ++{ ++ return platform_driver_probe(&retu_wdt_driver, retu_wdt_probe); ++} ++ ++static void __exit retu_wdt_exit(void) ++{ ++ platform_driver_unregister(&retu_wdt_driver); ++} ++ ++module_init(retu_wdt_init); ++module_exit(retu_wdt_exit); ++module_param(counter_param, int, 0); ++ ++MODULE_DESCRIPTION("Retu WatchDog"); ++MODULE_AUTHOR("Amit Kucheria"); ++MODULE_LICENSE("GPL"); ++ +Index: linux-2.6.38-rc6/drivers/cbus/tahvo.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/tahvo.c 2011-02-24 12:04:51.463188907 +0100 +@@ -0,0 +1,391 @@ ++/** ++ * drivers/cbus/tahvo.c ++ * ++ * Support functions for Tahvo ASIC ++ * ++ * Copyright (C) 2004, 2005 Nokia Corporation ++ * ++ * Written by Juha Yrjölä <juha.yrjola@nokia.com>, ++ * David Weinehall <david.weinehall@nokia.com>, and ++ * Mikko Ylinen <mikko.k.ylinen@nokia.com> ++ * ++ * This file is subject to the terms and conditions of the GNU General ++ * Public License. See the file "COPYING" in the main directory of this ++ * archive for more details. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ */ ++ ++#include <linux/module.h> ++#include <linux/init.h> ++ ++#include <linux/kernel.h> ++#include <linux/errno.h> ++#include <linux/device.h> ++#include <linux/miscdevice.h> ++#include <linux/poll.h> ++#include <linux/fs.h> ++#include <linux/irq.h> ++#include <linux/interrupt.h> ++#include <linux/platform_device.h> ++#include <linux/gpio.h> ++ ++#include <asm/uaccess.h> ++#include <asm/mach-types.h> ++ ++#include <plat/mux.h> ++#include <plat/board.h> ++ ++#include "cbus.h" ++#include "tahvo.h" ++ ++#define TAHVO_ID 0x02 ++#define PFX "tahvo: " ++ ++static int tahvo_initialized; ++static int tahvo_is_betty; ++ ++static struct tasklet_struct tahvo_tasklet; ++spinlock_t tahvo_lock = SPIN_LOCK_UNLOCKED; ++ ++struct tahvo_irq_handler_desc { ++ int (*func)(unsigned long); ++ unsigned long arg; ++ char name[8]; ++}; ++ ++static struct tahvo_irq_handler_desc tahvo_irq_handlers[MAX_TAHVO_IRQ_HANDLERS]; ++ ++int tahvo_get_status(void) ++{ ++ return tahvo_initialized; ++} ++EXPORT_SYMBOL(tahvo_get_status); ++ ++/** ++ * tahvo_read_reg - Read a value from a register in Tahvo ++ * @reg: the register to read from ++ * ++ * This function returns the contents of the specified register ++ */ ++int tahvo_read_reg(unsigned reg) ++{ ++ BUG_ON(!tahvo_initialized); ++ return cbus_read_reg(TAHVO_ID, reg); ++} ++EXPORT_SYMBOL(tahvo_read_reg); ++ ++/** ++ * tahvo_write_reg - Write a value to a register in Tahvo ++ * @reg: the register to write to ++ * @reg: the value to write to the register ++ * ++ * This function writes a value to the specified register ++ */ ++void tahvo_write_reg(unsigned reg, u16 val) ++{ ++ BUG_ON(!tahvo_initialized); ++ cbus_write_reg(TAHVO_ID, reg, val); ++} ++EXPORT_SYMBOL(tahvo_write_reg); ++ ++/** ++ * tahvo_set_clear_reg_bits - set and clear register bits atomically ++ * @reg: the register to write to ++ * @bits: the bits to set ++ * ++ * This function sets and clears the specified Tahvo register bits atomically ++ */ ++void tahvo_set_clear_reg_bits(unsigned reg, u16 set, u16 clear) ++{ ++ unsigned long flags; ++ u16 w; ++ ++ spin_lock_irqsave(&tahvo_lock, flags); ++ w = tahvo_read_reg(reg); ++ w &= ~clear; ++ w |= set; ++ tahvo_write_reg(reg, w); ++ spin_unlock_irqrestore(&tahvo_lock, flags); ++} ++ ++/* ++ * Disable given TAHVO interrupt ++ */ ++void tahvo_disable_irq(int id) ++{ ++ unsigned long flags; ++ u16 mask; ++ ++ spin_lock_irqsave(&tahvo_lock, flags); ++ mask = tahvo_read_reg(TAHVO_REG_IMR); ++ mask |= 1 << id; ++ tahvo_write_reg(TAHVO_REG_IMR, mask); ++ spin_unlock_irqrestore(&tahvo_lock, flags); ++} ++EXPORT_SYMBOL(tahvo_disable_irq); ++ ++/* ++ * Enable given TAHVO interrupt ++ */ ++void tahvo_enable_irq(int id) ++{ ++ unsigned long flags; ++ u16 mask; ++ ++ spin_lock_irqsave(&tahvo_lock, flags); ++ mask = tahvo_read_reg(TAHVO_REG_IMR); ++ mask &= ~(1 << id); ++ tahvo_write_reg(TAHVO_REG_IMR, mask); ++ spin_unlock_irqrestore(&tahvo_lock, flags); ++} ++EXPORT_SYMBOL(tahvo_enable_irq); ++ ++/* ++ * Acknowledge given TAHVO interrupt ++ */ ++void tahvo_ack_irq(int id) ++{ ++ tahvo_write_reg(TAHVO_REG_IDR, 1 << id); ++} ++EXPORT_SYMBOL(tahvo_ack_irq); ++ ++static int tahvo_7bit_backlight; ++ ++int tahvo_get_backlight_level(void) ++{ ++ int mask; ++ ++ if (tahvo_7bit_backlight) ++ mask = 0x7f; ++ else ++ mask = 0x0f; ++ return tahvo_read_reg(TAHVO_REG_LEDPWMR) & mask; ++} ++EXPORT_SYMBOL(tahvo_get_backlight_level); ++ ++int tahvo_get_max_backlight_level(void) ++{ ++ if (tahvo_7bit_backlight) ++ return 0x7f; ++ else ++ return 0x0f; ++} ++EXPORT_SYMBOL(tahvo_get_max_backlight_level); ++ ++void tahvo_set_backlight_level(int level) ++{ ++ int max_level; ++ ++ max_level = tahvo_get_max_backlight_level(); ++ if (level > max_level) ++ level = max_level; ++ tahvo_write_reg(TAHVO_REG_LEDPWMR, level); ++} ++EXPORT_SYMBOL(tahvo_set_backlight_level); ++ ++/* ++ * TAHVO interrupt handler. Only schedules the tasklet. ++ */ ++static irqreturn_t tahvo_irq_handler(int irq, void *dev_id) ++{ ++ tasklet_schedule(&tahvo_tasklet); ++ return IRQ_HANDLED; ++} ++ ++/* ++ * Tasklet handler ++ */ ++static void tahvo_tasklet_handler(unsigned long data) ++{ ++ struct tahvo_irq_handler_desc *hnd; ++ u16 id; ++ u16 im; ++ int i; ++ ++ for (;;) { ++ id = tahvo_read_reg(TAHVO_REG_IDR); ++ im = ~tahvo_read_reg(TAHVO_REG_IMR); ++ id &= im; ++ ++ if (!id) ++ break; ++ ++ for (i = 0; id != 0; i++, id >>= 1) { ++ if (!(id & 1)) ++ continue; ++ hnd = &tahvo_irq_handlers[i]; ++ if (hnd->func == NULL) { ++ /* Spurious tahvo interrupt - just ack it */ ++ printk(KERN_INFO "Spurious Tahvo interrupt " ++ "(id %d)\n", i); ++ tahvo_disable_irq(i); ++ tahvo_ack_irq(i); ++ continue; ++ } ++ hnd->func(hnd->arg); ++ /* ++ * Don't acknowledge the interrupt here ++ * It must be done explicitly ++ */ ++ } ++ } ++} ++ ++/* ++ * Register the handler for a given TAHVO interrupt source. ++ */ ++int tahvo_request_irq(int id, void *irq_handler, unsigned long arg, char *name) ++{ ++ struct tahvo_irq_handler_desc *hnd; ++ ++ if (irq_handler == NULL || id >= MAX_TAHVO_IRQ_HANDLERS || ++ name == NULL) { ++ printk(KERN_ERR PFX "Invalid arguments to %s\n", ++ __FUNCTION__); ++ return -EINVAL; ++ } ++ hnd = &tahvo_irq_handlers[id]; ++ if (hnd->func != NULL) { ++ printk(KERN_ERR PFX "IRQ %d already reserved\n", id); ++ return -EBUSY; ++ } ++ printk(KERN_INFO PFX "Registering interrupt %d for device %s\n", ++ id, name); ++ hnd->func = irq_handler; ++ hnd->arg = arg; ++ strlcpy(hnd->name, name, sizeof(hnd->name)); ++ ++ tahvo_ack_irq(id); ++ tahvo_enable_irq(id); ++ ++ return 0; ++} ++EXPORT_SYMBOL(tahvo_request_irq); ++ ++/* ++ * Unregister the handler for a given TAHVO interrupt source. ++ */ ++void tahvo_free_irq(int id) ++{ ++ struct tahvo_irq_handler_desc *hnd; ++ ++ if (id >= MAX_TAHVO_IRQ_HANDLERS) { ++ printk(KERN_ERR PFX "Invalid argument to %s\n", ++ __FUNCTION__); ++ return; ++ } ++ hnd = &tahvo_irq_handlers[id]; ++ if (hnd->func == NULL) { ++ printk(KERN_ERR PFX "IRQ %d already freed\n", id); ++ return; ++ } ++ ++ tahvo_disable_irq(id); ++ hnd->func = NULL; ++} ++EXPORT_SYMBOL(tahvo_free_irq); ++ ++/** ++ * tahvo_probe - Probe for Tahvo ASIC ++ * @dev: the Tahvo device ++ * ++ * Probe for the Tahvo ASIC and allocate memory ++ * for its device-struct if found ++ */ ++static int __init tahvo_probe(struct platform_device *pdev) ++{ ++ int rev, id, ret; ++ int irq; ++ ++ /* Prepare tasklet */ ++ tasklet_init(&tahvo_tasklet, tahvo_tasklet_handler, 0); ++ ++ tahvo_initialized = 1; ++ ++ rev = tahvo_read_reg(TAHVO_REG_ASICR); ++ ++ id = (rev >> 8) & 0xff; ++ if (id == 0x03) { ++ if ((rev & 0xff) >= 0x50) ++ tahvo_7bit_backlight = 1; ++ } else if (id == 0x0b) { ++ tahvo_is_betty = 1; ++ tahvo_7bit_backlight = 1; ++ } else { ++ dev_err(&pdev->dev, "Tahvo/Betty chip not found"); ++ return -ENODEV; ++ } ++ ++ dev_err(&pdev->dev, "%s v%d.%d found\n", tahvo_is_betty ? "Betty" : "Tahvo", ++ (rev >> 4) & 0x0f, rev & 0x0f); ++ ++ irq = platform_get_irq(pdev, 0); ++ ++ /* Mask all TAHVO interrupts */ ++ tahvo_write_reg(TAHVO_REG_IMR, 0xffff); ++ ++ ret = request_irq(irq, tahvo_irq_handler, IRQF_TRIGGER_RISING, ++ "tahvo", 0); ++ if (ret < 0) { ++ dev_err(&pdev->dev, "Unable to register IRQ handler\n"); ++ return ret; ++ } ++ return 0; ++} ++ ++static int __exit tahvo_remove(struct platform_device *pdev) ++{ ++ int irq; ++ ++ irq = platform_get_irq(pdev, 0); ++ ++ /* Mask all TAHVO interrupts */ ++ tahvo_write_reg(TAHVO_REG_IMR, 0xffff); ++ free_irq(irq, 0); ++ tasklet_kill(&tahvo_tasklet); ++ ++ return 0; ++} ++ ++static struct platform_driver tahvo_driver = { ++ .remove = __exit_p(tahvo_remove), ++ .driver = { ++ .name = "tahvo", ++ }, ++}; ++ ++/** ++ * tahvo_init - initialise Tahvo driver ++ * ++ * Initialise the Tahvo driver and return 0 if everything worked ok ++ */ ++static int __init tahvo_init(void) ++{ ++ return platform_driver_probe(&tahvo_driver, tahvo_probe); ++} ++ ++/* ++ * Cleanup ++ */ ++static void __exit tahvo_exit(void) ++{ ++ platform_driver_unregister(&tahvo_driver); ++} ++ ++subsys_initcall(tahvo_init); ++module_exit(tahvo_exit); ++ ++MODULE_DESCRIPTION("Tahvo ASIC control"); ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Juha Yrjölä"); ++MODULE_AUTHOR("David Weinehall"); ++MODULE_AUTHOR("Mikko Ylinen"); ++ +Index: linux-2.6.38-rc6/drivers/cbus/tahvo.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/tahvo.h 2011-02-24 12:04:51.463188907 +0100 +@@ -0,0 +1,57 @@ ++/* ++ * drivers/cbus/tahvo.h ++ * ++ * Copyright (C) 2004, 2005 Nokia Corporation ++ * ++ * Written by Juha Yrjölä <juha.yrjola@nokia.com> and ++ * David Weinehall <david.weinehall@nokia.com> ++ * ++ * This file is subject to the terms and conditions of the GNU General ++ * Public License. See the file "COPYING" in the main directory of this ++ * archive for more details. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ */ ++ ++#ifndef __DRIVERS_CBUS_TAHVO_H ++#define __DRIVERS_CBUS_TAHVO_H ++ ++#include <linux/types.h> ++ ++/* Registers */ ++#define TAHVO_REG_ASICR 0x00 /* ASIC ID & revision */ ++#define TAHVO_REG_IDR 0x01 /* Interrupt ID */ ++#define TAHVO_REG_IDSR 0x02 /* Interrupt status */ ++#define TAHVO_REG_IMR 0x03 /* Interrupt mask */ ++#define TAHVO_REG_LEDPWMR 0x05 /* LED PWM */ ++#define TAHVO_REG_USBR 0x06 /* USB control */ ++#define TAHVO_REG_MAX 0x0d ++ ++/* Interrupt sources */ ++#define TAHVO_INT_VBUSON 0 ++ ++#define MAX_TAHVO_IRQ_HANDLERS 8 ++ ++int tahvo_get_status(void); ++int tahvo_read_reg(unsigned reg); ++void tahvo_write_reg(unsigned reg, u16 val); ++void tahvo_set_clear_reg_bits(unsigned reg, u16 set, u16 clear); ++int tahvo_request_irq(int id, void *irq_handler, unsigned long arg, char *name); ++void tahvo_free_irq(int id); ++void tahvo_enable_irq(int id); ++void tahvo_disable_irq(int id); ++void tahvo_ack_irq(int id); ++int tahvo_get_backlight_level(void); ++int tahvo_get_max_backlight_level(void); ++void tahvo_set_backlight_level(int level); ++ ++extern spinlock_t tahvo_lock; ++ ++#endif /* __DRIVERS_CBUS_TAHVO_H */ +Index: linux-2.6.38-rc6/drivers/cbus/tahvo-usb.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/tahvo-usb.c 2011-02-24 12:04:51.464188862 +0100 +@@ -0,0 +1,773 @@ ++/** ++ * drivers/cbus/tahvo-usb.c ++ * ++ * Tahvo USB transeiver ++ * ++ * Copyright (C) 2005-2006 Nokia Corporation ++ * ++ * Parts copied from drivers/i2c/chips/isp1301_omap.c ++ * Copyright (C) 2004 Texas Instruments ++ * Copyright (C) 2004 David Brownell ++ * ++ * Written by Juha Yrjölä <juha.yrjola@nokia.com>, ++ * Tony Lindgren <tony@atomide.com>, and ++ * Timo Teräs <timo.teras@nokia.com> ++ * ++ * This file is subject to the terms and conditions of the GNU General ++ * Public License. See the file "COPYING" in the main directory of this ++ * archive for more details. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/init.h> ++#include <linux/slab.h> ++#include <linux/io.h> ++#include <linux/interrupt.h> ++#include <linux/platform_device.h> ++#include <linux/usb/ch9.h> ++#include <linux/usb/gadget.h> ++#include <linux/usb.h> ++#include <linux/usb/otg.h> ++#include <linux/i2c.h> ++#include <linux/workqueue.h> ++#include <linux/kobject.h> ++#include <linux/clk.h> ++#include <linux/mutex.h> ++ ++#include <asm/irq.h> ++#include <plat/usb.h> ++ ++#include "cbus.h" ++#include "tahvo.h" ++ ++#define DRIVER_NAME "tahvo-usb" ++ ++#define USBR_SLAVE_CONTROL (1 << 8) ++#define USBR_VPPVIO_SW (1 << 7) ++#define USBR_SPEED (1 << 6) ++#define USBR_REGOUT (1 << 5) ++#define USBR_MASTER_SW2 (1 << 4) ++#define USBR_MASTER_SW1 (1 << 3) ++#define USBR_SLAVE_SW (1 << 2) ++#define USBR_NSUSPEND (1 << 1) ++#define USBR_SEMODE (1 << 0) ++ ++/* bits in OTG_CTRL */ ++ ++/* Bits that are controlled by OMAP OTG and are read-only */ ++#define OTG_CTRL_OMAP_MASK (OTG_PULLDOWN|OTG_PULLUP|OTG_DRV_VBUS|\ ++ OTG_PD_VBUS|OTG_PU_VBUS|OTG_PU_ID) ++/* Bits that are controlled by transceiver */ ++#define OTG_CTRL_XCVR_MASK (OTG_ASESSVLD|OTG_BSESSEND|\ ++ OTG_BSESSVLD|OTG_VBUSVLD|OTG_ID) ++/* Bits that are controlled by system */ ++#define OTG_CTRL_SYS_MASK (OTG_A_BUSREQ|OTG_A_SETB_HNPEN|OTG_B_BUSREQ|\ ++ OTG_B_HNPEN|OTG_BUSDROP) ++ ++#if defined(CONFIG_USB_OHCI_HCD) && !defined(CONFIG_USB_OTG) ++#error tahvo-otg.c does not work with OCHI yet! ++#endif ++ ++#define TAHVO_MODE_HOST 0 ++#define TAHVO_MODE_PERIPHERAL 1 ++ ++#ifdef CONFIG_USB_OTG ++#define TAHVO_MODE(tu) (tu)->tahvo_mode ++#elif defined(CONFIG_USB_GADGET_OMAP) ++#define TAHVO_MODE(tu) TAHVO_MODE_PERIPHERAL ++#else ++#define TAHVO_MODE(tu) TAHVO_MODE_HOST ++#endif ++ ++struct tahvo_usb { ++ struct platform_device *pt_dev; ++ struct otg_transceiver otg; ++ int vbus_state; ++ struct work_struct irq_work; ++ struct mutex serialize; ++#ifdef CONFIG_USB_OTG ++ int tahvo_mode; ++#endif ++}; ++static struct platform_device tahvo_usb_device; ++ ++/* ++ * --------------------------------------------------------------------------- ++ * OTG related functions ++ * ++ * These shoud be separated into omap-otg.c driver module, as they are used ++ * by various transceivers. These functions are needed in the UDC-only case ++ * as well. These functions are copied from GPL isp1301_omap.c ++ * --------------------------------------------------------------------------- ++ */ ++static struct platform_device *tahvo_otg_dev; ++ ++static irqreturn_t omap_otg_irq(int irq, void *arg) ++{ ++ struct platform_device *otg_dev = arg; ++ struct tahvo_usb *tu = platform_get_drvdata(otg_dev); ++ u16 otg_irq; ++ ++ otg_irq = omap_readw(OTG_IRQ_SRC); ++ if (otg_irq & OPRT_CHG) { ++ omap_writew(OPRT_CHG, OTG_IRQ_SRC); ++ } else if (otg_irq & B_SRP_TMROUT) { ++ omap_writew(B_SRP_TMROUT, OTG_IRQ_SRC); ++ } else if (otg_irq & B_HNP_FAIL) { ++ omap_writew(B_HNP_FAIL, OTG_IRQ_SRC); ++ } else if (otg_irq & A_SRP_DETECT) { ++ omap_writew(A_SRP_DETECT, OTG_IRQ_SRC); ++ } else if (otg_irq & A_REQ_TMROUT) { ++ omap_writew(A_REQ_TMROUT, OTG_IRQ_SRC); ++ } else if (otg_irq & A_VBUS_ERR) { ++ omap_writew(A_VBUS_ERR, OTG_IRQ_SRC); ++ } else if (otg_irq & DRIVER_SWITCH) { ++#ifdef CONFIG_USB_OTG ++ if ((!(omap_readl(OTG_CTRL) & OTG_DRIVER_SEL)) && ++ tu->otg.host && tu->otg.state == OTG_STATE_A_HOST) { ++ /* role is host */ ++ usb_bus_start_enum(tu->otg.host, ++ tu->otg.host->otg_port); ++ } ++#endif ++ omap_writew(DRIVER_SWITCH, OTG_IRQ_SRC); ++ } else ++ return IRQ_NONE; ++ ++ return IRQ_HANDLED; ++ ++} ++ ++static int tahvo_otg_init(void) ++{ ++ u32 l; ++ ++#ifdef CONFIG_USB_OTG ++ if (!tahvo_otg_dev) { ++ printk("tahvo-usb: no tahvo_otg_dev\n"); ++ return -ENODEV; ++ } ++#endif ++ ++ l = omap_readl(OTG_SYSCON_1); ++ l &= ~OTG_IDLE_EN; ++ omap_writel(l, OTG_SYSCON_1); ++ udelay(100); ++ ++ /* some of these values are board-specific... */ ++ l = omap_readl(OTG_SYSCON_2); ++ l |= OTG_EN ++ /* for B-device: */ ++ | SRP_GPDATA /* 9msec Bdev D+ pulse */ ++ | SRP_GPDVBUS /* discharge after VBUS pulse */ ++ // | (3 << 24) /* 2msec VBUS pulse */ ++ /* for A-device: */ ++ | (0 << 20) /* 200ms nominal A_WAIT_VRISE timer */ ++ | SRP_DPW /* detect 167+ns SRP pulses */ ++ | SRP_DATA | SRP_VBUS; /* accept both kinds of SRP pulse */ ++ omap_writel(l, OTG_SYSCON_2); ++ ++ omap_writew(DRIVER_SWITCH | OPRT_CHG ++ | B_SRP_TMROUT | B_HNP_FAIL ++ | A_VBUS_ERR | A_SRP_DETECT | A_REQ_TMROUT, ++ OTG_IRQ_EN); ++ l = omap_readl(OTG_SYSCON_2); ++ l |= OTG_EN; ++ omap_writel(l, OTG_SYSCON_2); ++ ++ return 0; ++} ++ ++static int __init omap_otg_probe(struct platform_device *pdev) ++{ ++ int ret; ++ ++ tahvo_otg_dev = pdev; ++ ret = tahvo_otg_init(); ++ if (ret != 0) { ++ printk(KERN_ERR "tahvo-usb: tahvo_otg_init failed\n"); ++ return ret; ++ } ++ ++ return request_irq(tahvo_otg_dev->resource[1].start, ++ omap_otg_irq, IRQF_DISABLED, DRIVER_NAME, ++ &tahvo_usb_device); ++} ++ ++static int __exit omap_otg_remove(struct platform_device *pdev) ++{ ++ free_irq(tahvo_otg_dev->resource[1].start, &tahvo_usb_device); ++ tahvo_otg_dev = NULL; ++ ++ return 0; ++} ++ ++struct platform_driver omap_otg_driver = { ++ .driver = { ++ .name = "omap_otg", ++ }, ++ .remove = __exit_p(omap_otg_remove), ++}; ++ ++/* ++ * --------------------------------------------------------------------------- ++ * Tahvo related functions ++ * These are Nokia proprietary code, except for the OTG register settings, ++ * which are copied from isp1301.c ++ * --------------------------------------------------------------------------- ++ */ ++static ssize_t vbus_state_show(struct device *device, ++ struct device_attribute *attr, char *buf) ++{ ++ struct tahvo_usb *tu = dev_get_drvdata(device); ++ return sprintf(buf, "%d\n", tu->vbus_state); ++} ++static DEVICE_ATTR(vbus_state, 0444, vbus_state_show, NULL); ++ ++int vbus_active = 0; ++ ++#if 0 ++ ++static int host_suspend(struct tahvo_usb *tu) ++{ ++ struct device *dev; ++ ++ if (!tu->otg.host) ++ return -ENODEV; ++ ++ /* Currently ASSUMES only the OTG port matters; ++ * other ports could be active... ++ */ ++ dev = tu->otg.host->controller; ++ return dev->driver->suspend(dev, PMSG_SUSPEND); ++} ++ ++static int host_resume(struct tahvo_usb *tu) ++{ ++ struct device *dev; ++ ++ if (!tu->otg.host) ++ return -ENODEV; ++ ++ dev = tu->otg.host->controller; ++ return dev->driver->resume(dev); ++} ++ ++#else ++ ++static int host_suspend(struct tahvo_usb *tu) ++{ ++ return 0; ++} ++ ++static int host_resume(struct tahvo_usb *tu) ++{ ++ return 0; ++} ++ ++#endif ++ ++static void check_vbus_state(struct tahvo_usb *tu) ++{ ++ int reg, prev_state; ++ ++ reg = tahvo_read_reg(TAHVO_REG_IDSR); ++ if (reg & 0x01) { ++ u32 l; ++ ++ vbus_active = 1; ++ switch (tu->otg.state) { ++ case OTG_STATE_B_IDLE: ++ /* Enable the gadget driver */ ++ if (tu->otg.gadget) ++ usb_gadget_vbus_connect(tu->otg.gadget); ++ /* Set B-session valid and not B-sessio ended to indicate ++ * Vbus to be ok. */ ++ l = omap_readl(OTG_CTRL); ++ l &= ~OTG_BSESSEND; ++ l |= OTG_BSESSVLD; ++ omap_writel(l, OTG_CTRL); ++ ++ tu->otg.state = OTG_STATE_B_PERIPHERAL; ++ break; ++ case OTG_STATE_A_IDLE: ++ /* Session is now valid assuming the USB hub is driving Vbus */ ++ tu->otg.state = OTG_STATE_A_HOST; ++ host_resume(tu); ++ break; ++ default: ++ break; ++ } ++ printk("USB cable connected\n"); ++ } else { ++ switch (tu->otg.state) { ++ case OTG_STATE_B_PERIPHERAL: ++ if (tu->otg.gadget) ++ usb_gadget_vbus_disconnect(tu->otg.gadget); ++ tu->otg.state = OTG_STATE_B_IDLE; ++ break; ++ case OTG_STATE_A_HOST: ++ tu->otg.state = OTG_STATE_A_IDLE; ++ break; ++ default: ++ break; ++ } ++ printk("USB cable disconnected\n"); ++ vbus_active = 0; ++ } ++ ++ prev_state = tu->vbus_state; ++ tu->vbus_state = reg & 0x01; ++ if (prev_state != tu->vbus_state) ++ sysfs_notify(&tu->pt_dev->dev.kobj, NULL, "vbus_state"); ++} ++ ++static void tahvo_usb_become_host(struct tahvo_usb *tu) ++{ ++ u32 l; ++ ++ /* Clear system and transceiver controlled bits ++ * also mark the A-session is always valid */ ++ tahvo_otg_init(); ++ ++ l = omap_readl(OTG_CTRL); ++ l &= ~(OTG_CTRL_XCVR_MASK | OTG_CTRL_SYS_MASK); ++ l |= OTG_ASESSVLD; ++ omap_writel(l, OTG_CTRL); ++ ++ /* Power up the transceiver in USB host mode */ ++ tahvo_write_reg(TAHVO_REG_USBR, USBR_REGOUT | USBR_NSUSPEND | ++ USBR_MASTER_SW2 | USBR_MASTER_SW1); ++ tu->otg.state = OTG_STATE_A_IDLE; ++ ++ check_vbus_state(tu); ++} ++ ++static void tahvo_usb_stop_host(struct tahvo_usb *tu) ++{ ++ host_suspend(tu); ++ tu->otg.state = OTG_STATE_A_IDLE; ++} ++ ++static void tahvo_usb_become_peripheral(struct tahvo_usb *tu) ++{ ++ u32 l; ++ ++ /* Clear system and transceiver controlled bits ++ * and enable ID to mark peripheral mode and ++ * BSESSEND to mark no Vbus */ ++ tahvo_otg_init(); ++ l = omap_readl(OTG_CTRL); ++ l &= ~(OTG_CTRL_XCVR_MASK | OTG_CTRL_SYS_MASK | OTG_BSESSVLD); ++ l |= OTG_ID | OTG_BSESSEND; ++ omap_writel(l, OTG_CTRL); ++ ++ /* Power up transceiver and set it in USB perhiperal mode */ ++ tahvo_write_reg(TAHVO_REG_USBR, USBR_SLAVE_CONTROL | USBR_REGOUT | USBR_NSUSPEND | USBR_SLAVE_SW); ++ tu->otg.state = OTG_STATE_B_IDLE; ++ ++ check_vbus_state(tu); ++} ++ ++static void tahvo_usb_stop_peripheral(struct tahvo_usb *tu) ++{ ++ u32 l; ++ ++ l = omap_readl(OTG_CTRL); ++ l &= ~OTG_BSESSVLD; ++ l |= OTG_BSESSEND; ++ omap_writel(l, OTG_CTRL); ++ ++ if (tu->otg.gadget) ++ usb_gadget_vbus_disconnect(tu->otg.gadget); ++ tu->otg.state = OTG_STATE_B_IDLE; ++ ++} ++ ++static void tahvo_usb_power_off(struct tahvo_usb *tu) ++{ ++ u32 l; ++ int id; ++ ++ /* Disable gadget controller if any */ ++ if (tu->otg.gadget) ++ usb_gadget_vbus_disconnect(tu->otg.gadget); ++ ++ host_suspend(tu); ++ ++ /* Disable OTG and interrupts */ ++ if (TAHVO_MODE(tu) == TAHVO_MODE_PERIPHERAL) ++ id = OTG_ID; ++ else ++ id = 0; ++ l = omap_readl(OTG_CTRL); ++ l &= ~(OTG_CTRL_XCVR_MASK | OTG_CTRL_SYS_MASK | OTG_BSESSVLD); ++ l |= id | OTG_BSESSEND; ++ omap_writel(l, OTG_CTRL); ++ omap_writew(0, OTG_IRQ_EN); ++ ++ l = omap_readl(OTG_SYSCON_2); ++ l &= ~OTG_EN; ++ omap_writel(l, OTG_SYSCON_2); ++ ++ l = omap_readl(OTG_SYSCON_1); ++ l |= OTG_IDLE_EN; ++ omap_writel(l, OTG_SYSCON_1); ++ ++ /* Power off transceiver */ ++ tahvo_write_reg(TAHVO_REG_USBR, 0); ++ tu->otg.state = OTG_STATE_UNDEFINED; ++} ++ ++ ++static int tahvo_usb_set_power(struct otg_transceiver *dev, unsigned mA) ++{ ++ struct tahvo_usb *tu = container_of(dev, struct tahvo_usb, otg); ++ ++ dev_dbg(&tu->pt_dev->dev, "set_power %d mA\n", mA); ++ ++ if (dev->state == OTG_STATE_B_PERIPHERAL) { ++ /* REVISIT: Can Tahvo charge battery from VBUS? */ ++ } ++ return 0; ++} ++ ++static int tahvo_usb_set_suspend(struct otg_transceiver *dev, int suspend) ++{ ++ struct tahvo_usb *tu = container_of(dev, struct tahvo_usb, otg); ++ u16 w; ++ ++ dev_dbg(&tu->pt_dev->dev, "set_suspend\n"); ++ ++ w = tahvo_read_reg(TAHVO_REG_USBR); ++ if (suspend) ++ w &= ~USBR_NSUSPEND; ++ else ++ w |= USBR_NSUSPEND; ++ tahvo_write_reg(TAHVO_REG_USBR, w); ++ ++ return 0; ++} ++ ++static int tahvo_usb_start_srp(struct otg_transceiver *dev) ++{ ++ struct tahvo_usb *tu = container_of(dev, struct tahvo_usb, otg); ++ u32 otg_ctrl; ++ ++ dev_dbg(&tu->pt_dev->dev, "start_srp\n"); ++ ++ if (!dev || tu->otg.state != OTG_STATE_B_IDLE) ++ return -ENODEV; ++ ++ otg_ctrl = omap_readl(OTG_CTRL); ++ if (!(otg_ctrl & OTG_BSESSEND)) ++ return -EINVAL; ++ ++ otg_ctrl |= OTG_B_BUSREQ; ++ otg_ctrl &= ~OTG_A_BUSREQ & OTG_CTRL_SYS_MASK; ++ omap_writel(otg_ctrl, OTG_CTRL); ++ tu->otg.state = OTG_STATE_B_SRP_INIT; ++ ++ return 0; ++} ++ ++static int tahvo_usb_start_hnp(struct otg_transceiver *otg) ++{ ++ struct tahvo_usb *tu = container_of(otg, struct tahvo_usb, otg); ++ ++ dev_dbg(&tu->pt_dev->dev, "start_hnp\n"); ++#ifdef CONFIG_USB_OTG ++ /* REVISIT: Add this for OTG */ ++#endif ++ return -EINVAL; ++} ++ ++static int tahvo_usb_set_host(struct otg_transceiver *otg, struct usb_bus *host) ++{ ++ struct tahvo_usb *tu = container_of(otg, struct tahvo_usb, otg); ++ u32 l; ++ ++ dev_dbg(&tu->pt_dev->dev, "set_host %p\n", host); ++ ++ if (otg == NULL) ++ return -ENODEV; ++ ++#if defined(CONFIG_USB_OTG) || !defined(CONFIG_USB_GADGET_OMAP) ++ ++ mutex_lock(&tu->serialize); ++ ++ if (host == NULL) { ++ if (TAHVO_MODE(tu) == TAHVO_MODE_HOST) ++ tahvo_usb_power_off(tu); ++ tu->otg.host = NULL; ++ mutex_unlock(&tu->serialize); ++ return 0; ++ } ++ ++ l = omap_readl(OTG_SYSCON_1); ++ l &= ~(OTG_IDLE_EN | HST_IDLE_EN | DEV_IDLE_EN); ++ omap_writel(l, OTG_SYSCON_1); ++ ++ if (TAHVO_MODE(tu) == TAHVO_MODE_HOST) { ++ tu->otg.host = NULL; ++ tahvo_usb_become_host(tu); ++ } else ++ host_suspend(tu); ++ ++ tu->otg.host = host; ++ ++ mutex_unlock(&tu->serialize); ++#else ++ /* No host mode configured, so do not allow host controlled to be set */ ++ return -EINVAL; ++#endif ++ ++ return 0; ++} ++ ++static int tahvo_usb_set_peripheral(struct otg_transceiver *otg, struct usb_gadget *gadget) ++{ ++ struct tahvo_usb *tu = container_of(otg, struct tahvo_usb, otg); ++ ++ dev_dbg(&tu->pt_dev->dev, "set_peripheral %p\n", gadget); ++ ++ if (!otg) ++ return -ENODEV; ++ ++#if defined(CONFIG_USB_OTG) || defined(CONFIG_USB_GADGET_OMAP) ++ ++ mutex_lock(&tu->serialize); ++ ++ if (!gadget) { ++ if (TAHVO_MODE(tu) == TAHVO_MODE_PERIPHERAL) ++ tahvo_usb_power_off(tu); ++ tu->otg.gadget = NULL; ++ mutex_unlock(&tu->serialize); ++ return 0; ++ } ++ ++ tu->otg.gadget = gadget; ++ if (TAHVO_MODE(tu) == TAHVO_MODE_PERIPHERAL) ++ tahvo_usb_become_peripheral(tu); ++ ++ mutex_unlock(&tu->serialize); ++#else ++ /* No gadget mode configured, so do not allow host controlled to be set */ ++ return -EINVAL; ++#endif ++ ++ return 0; ++} ++ ++static void tahvo_usb_irq_work(struct work_struct *work) ++{ ++ struct tahvo_usb *tu = container_of(work, struct tahvo_usb, irq_work); ++ ++ mutex_lock(&tu->serialize); ++ check_vbus_state(tu); ++ mutex_unlock(&tu->serialize); ++} ++ ++static void tahvo_usb_vbus_interrupt(unsigned long arg) ++{ ++ struct tahvo_usb *tu = (struct tahvo_usb *) arg; ++ ++ tahvo_ack_irq(TAHVO_INT_VBUSON); ++ /* Seems we need this to acknowledge the interrupt */ ++ tahvo_read_reg(TAHVO_REG_IDSR); ++ schedule_work(&tu->irq_work); ++} ++ ++#ifdef CONFIG_USB_OTG ++static ssize_t otg_mode_show(struct device *device, ++ struct device_attribute *attr, char *buf) ++{ ++ struct tahvo_usb *tu = dev_get_drvdata(device); ++ switch (tu->tahvo_mode) { ++ case TAHVO_MODE_HOST: ++ return sprintf(buf, "host\n"); ++ case TAHVO_MODE_PERIPHERAL: ++ return sprintf(buf, "peripheral\n"); ++ } ++ return sprintf(buf, "unknown\n"); ++} ++ ++static ssize_t otg_mode_store(struct device *device, ++ struct device_attribute *attr, ++ const char *buf, size_t count) ++{ ++ struct tahvo_usb *tu = dev_get_drvdata(device); ++ int r; ++ ++ r = strlen(buf); ++ mutex_lock(&tu->serialize); ++ if (strncmp(buf, "host", 4) == 0) { ++ if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL) ++ tahvo_usb_stop_peripheral(tu); ++ tu->tahvo_mode = TAHVO_MODE_HOST; ++ if (tu->otg.host) { ++ printk(KERN_INFO "Selected HOST mode: host controller present.\n"); ++ tahvo_usb_become_host(tu); ++ } else { ++ printk(KERN_INFO "Selected HOST mode: no host controller, powering off.\n"); ++ tahvo_usb_power_off(tu); ++ } ++ } else if (strncmp(buf, "peripheral", 10) == 0) { ++ if (tu->tahvo_mode == TAHVO_MODE_HOST) ++ tahvo_usb_stop_host(tu); ++ tu->tahvo_mode = TAHVO_MODE_PERIPHERAL; ++ if (tu->otg.gadget) { ++ printk(KERN_INFO "Selected PERIPHERAL mode: gadget driver present.\n"); ++ tahvo_usb_become_peripheral(tu); ++ } else { ++ printk(KERN_INFO "Selected PERIPHERAL mode: no gadget driver, powering off.\n"); ++ tahvo_usb_power_off(tu); ++ } ++ } else ++ r = -EINVAL; ++ ++ mutex_unlock(&tu->serialize); ++ return r; ++} ++ ++static DEVICE_ATTR(otg_mode, 0644, otg_mode_show, otg_mode_store); ++#endif ++ ++static int __init tahvo_usb_probe(struct platform_device *pdev) ++{ ++ struct tahvo_usb *tu; ++ struct device *dev = &pdev->dev; ++ int ret; ++ ++ ret = tahvo_get_status(); ++ if (!ret) ++ return -ENODEV; ++ ++ dev_dbg(dev, "probe\n"); ++ ++ /* Create driver data */ ++ tu = kzalloc(sizeof(*tu), GFP_KERNEL); ++ if (!tu) ++ return -ENOMEM; ++ ++ tu->pt_dev = container_of(dev, struct platform_device, dev); ++#ifdef CONFIG_USB_OTG ++ /* Default mode */ ++#ifdef CONFIG_CBUS_TAHVO_USB_HOST_BY_DEFAULT ++ tu->tahvo_mode = TAHVO_MODE_HOST; ++#else ++ tu->tahvo_mode = TAHVO_MODE_PERIPHERAL; ++#endif ++#endif ++ ++ INIT_WORK(&tu->irq_work, tahvo_usb_irq_work); ++ mutex_init(&tu->serialize); ++ ++ /* Set initial state, so that we generate kevents only on ++ * state changes */ ++ tu->vbus_state = tahvo_read_reg(TAHVO_REG_IDSR) & 0x01; ++ ++ /* We cannot enable interrupt until omap_udc is initialized */ ++ ret = tahvo_request_irq(TAHVO_INT_VBUSON, tahvo_usb_vbus_interrupt, ++ (unsigned long) tu, "vbus_interrupt"); ++ if (ret != 0) { ++ kfree(tu); ++ printk(KERN_ERR "Could not register Tahvo interrupt for VBUS\n"); ++ return ret; ++ } ++ ++ /* Attributes */ ++ ret = device_create_file(dev, &dev_attr_vbus_state); ++#ifdef CONFIG_USB_OTG ++ ret |= device_create_file(dev, &dev_attr_otg_mode); ++#endif ++ if (ret) ++ printk(KERN_ERR "attribute creation failed: %d\n", ret); ++ ++ /* Create OTG interface */ ++ tahvo_usb_power_off(tu); ++ tu->otg.state = OTG_STATE_UNDEFINED; ++ tu->otg.label = DRIVER_NAME; ++ tu->otg.set_host = tahvo_usb_set_host; ++ tu->otg.set_peripheral = tahvo_usb_set_peripheral; ++ tu->otg.set_power = tahvo_usb_set_power; ++ tu->otg.set_suspend = tahvo_usb_set_suspend; ++ tu->otg.start_srp = tahvo_usb_start_srp; ++ tu->otg.start_hnp = tahvo_usb_start_hnp; ++ ++ ret = otg_set_transceiver(&tu->otg); ++ if (ret < 0) { ++ printk(KERN_ERR "Cannot register USB transceiver\n"); ++ kfree(tu); ++ tahvo_free_irq(TAHVO_INT_VBUSON); ++ return ret; ++ } ++ ++ dev_set_drvdata(dev, tu); ++ ++ /* Act upon current vbus state once at startup. A vbus state irq may or ++ * may not be generated in addition to this. */ ++ schedule_work(&tu->irq_work); ++ return 0; ++} ++ ++static int __exit tahvo_usb_remove(struct platform_device *pdev) ++{ ++ dev_dbg(&pdev->dev, "remove\n"); ++ ++ tahvo_free_irq(TAHVO_INT_VBUSON); ++ flush_scheduled_work(); ++ otg_set_transceiver(0); ++ device_remove_file(&pdev->dev, &dev_attr_vbus_state); ++#ifdef CONFIG_USB_OTG ++ device_remove_file(&pdev->dev, &dev_attr_otg_mode); ++#endif ++ return 0; ++} ++ ++static struct platform_driver tahvo_usb_driver = { ++ .driver = { ++ .name = "tahvo-usb", ++ }, ++ .remove = __exit_p(tahvo_usb_remove), ++}; ++ ++static int __init tahvo_usb_init(void) ++{ ++ int ret = 0; ++ ++ ret = platform_driver_probe(&tahvo_usb_driver, tahvo_usb_probe); ++ if (ret) ++ return ret; ++ ++ ret = platform_driver_probe(&omap_otg_driver, omap_otg_probe); ++ if (ret) { ++ platform_driver_unregister(&tahvo_usb_driver); ++ return ret; ++ } ++ ++ return 0; ++} ++ ++subsys_initcall(tahvo_usb_init); ++ ++static void __exit tahvo_usb_exit(void) ++{ ++ platform_driver_unregister(&omap_otg_driver); ++ platform_driver_unregister(&tahvo_usb_driver); ++} ++module_exit(tahvo_usb_exit); ++ ++MODULE_DESCRIPTION("Tahvo USB OTG Transceiver Driver"); ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Juha Yrjölä, Tony Lindgren, and Timo Teräs"); +Index: linux-2.6.38-rc6/drivers/Makefile +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/Makefile 2011-02-24 12:03:07.439316519 +0100 ++++ linux-2.6.38-rc6/drivers/Makefile 2011-02-24 12:03:27.457522207 +0100 +@@ -74,7 +74,7 @@ + obj-$(CONFIG_INPUT) += input/ + obj-$(CONFIG_I2O) += message/ + obj-$(CONFIG_RTC_LIB) += rtc/ +-obj-y += i2c/ media/ ++obj-y += i2c/ media/ cbus/ + obj-$(CONFIG_PPS) += pps/ + obj-$(CONFIG_W1) += w1/ + obj-$(CONFIG_POWER_SUPPLY) += power/ +Index: linux-2.6.38-rc6/arch/arm/Kconfig +=================================================================== +--- linux-2.6.38-rc6.orig/arch/arm/Kconfig 2011-02-24 12:03:07.286322589 +0100 ++++ linux-2.6.38-rc6/arch/arm/Kconfig 2011-02-24 12:03:27.458522167 +0100 +@@ -1930,6 +1930,10 @@ + + source "drivers/Kconfig" + ++if ARCH_OMAP ++source "drivers/cbus/Kconfig" ++endif ++ + source "fs/Kconfig" + + source "arch/arm/Kconfig.debug" diff --git a/target/linux/omap24xx/patches-2.6.38/505-retu-write-lock.patch b/target/linux/omap24xx/patches-2.6.38/505-retu-write-lock.patch new file mode 100644 index 0000000000..0fb8c6f212 --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/505-retu-write-lock.patch @@ -0,0 +1,14 @@ +Index: linux-2.6.38-rc6/drivers/cbus/retu.c +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/cbus/retu.c 2011-02-26 23:23:34.014429906 +0100 ++++ linux-2.6.38-rc6/drivers/cbus/retu.c 2011-02-26 23:25:18.905358127 +0100 +@@ -120,7 +120,9 @@ + { + struct retu *retu = dev_get_drvdata(child->parent); + ++ mutex_lock(&retu->mutex); + __retu_write_reg(retu, reg, val); ++ mutex_unlock(&retu->mutex); + } + EXPORT_SYMBOL_GPL(retu_write_reg); + diff --git a/target/linux/omap24xx/patches-2.6.38/510-cbus-retu-defines.patch b/target/linux/omap24xx/patches-2.6.38/510-cbus-retu-defines.patch new file mode 100644 index 0000000000..c4acce9eac --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/510-cbus-retu-defines.patch @@ -0,0 +1,37 @@ +Index: linux-2.6.38-rc6/drivers/cbus/retu.h +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/cbus/retu.h 2011-02-25 02:16:28.000000000 +0100 ++++ linux-2.6.38-rc6/drivers/cbus/retu.h 2011-02-25 23:36:10.363457910 +0100 +@@ -40,6 +40,8 @@ + #define RETU_REG_CTRL_CLR 0x0f /* Regulator clear register */ + #define RETU_REG_CTRL_SET 0x10 /* Regulator set register */ + #define RETU_REG_STATUS 0x16 /* Status register */ ++#define RETU_REG_STATUS_BATAVAIL 0x0100 /* Battery available */ ++#define RETU_REG_STATUS_CHGPLUG 0x1000 /* Charger is plugged in */ + #define RETU_REG_WATCHDOG 0x17 /* Watchdog register */ + #define RETU_REG_AUDTXR 0x18 /* Audio Codec Tx register */ + #define RETU_REG_MAX 0x1f +@@ -57,6 +59,23 @@ + + #define MAX_RETU_IRQ_HANDLERS 16 + ++/* ADC channels */ ++#define RETU_ADC_GND 0x00 /* Ground */ ++#define RETU_ADC_BSI 0x01 /* Battery Size Indicator */ ++#define RETU_ADC_BATTEMP 0x02 /* Battery temperature */ ++#define RETU_ADC_CHGVOLT 0x03 /* Charger voltage */ ++#define RETU_ADC_HEADSET 0x04 /* Headset detection */ ++#define RETU_ADC_HOOKDET 0x05 /* Hook detection */ ++#define RETU_ADC_RFGP 0x06 /* RF GP */ ++#define RETU_ADC_WBTX 0x07 /* Wideband Tx detection */ ++#define RETU_ADC_BATTVOLT 0x08 /* Battery voltage measurement */ ++#define RETU_ADC_GND2 0x09 /* Ground */ ++#define RETU_ADC_LIGHTSENS 0x0A /* Light sensor */ ++#define RETU_ADC_LIGHTTEMP 0x0B /* Light sensor temperature */ ++#define RETU_ADC_BKUPVOLT 0x0C /* Backup battery voltage */ ++#define RETU_ADC_TEMP 0x0D /* RETU temperature */ ++ ++ + int retu_read_reg(struct device *child, unsigned reg); + void retu_write_reg(struct device *child, unsigned reg, u16 val); + void retu_set_clear_reg_bits(struct device *child, unsigned reg, u16 set, diff --git a/target/linux/omap24xx/patches-2.6.38/520-cbus-tahvo-defines.patch b/target/linux/omap24xx/patches-2.6.38/520-cbus-tahvo-defines.patch new file mode 100644 index 0000000000..ca109261fa --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/520-cbus-tahvo-defines.patch @@ -0,0 +1,28 @@ +Index: linux-2.6.38-rc6/drivers/cbus/tahvo.h +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/cbus/tahvo.h 2011-02-25 02:16:28.000000000 +0100 ++++ linux-2.6.38-rc6/drivers/cbus/tahvo.h 2011-02-25 23:41:00.321263098 +0100 +@@ -30,12 +30,23 @@ + #define TAHVO_REG_IDR 0x01 /* Interrupt ID */ + #define TAHVO_REG_IDSR 0x02 /* Interrupt status */ + #define TAHVO_REG_IMR 0x03 /* Interrupt mask */ ++#define TAHVO_REG_CHGCURR 0x04 /* Charge current control PWM (8-bit) */ + #define TAHVO_REG_LEDPWMR 0x05 /* LED PWM */ + #define TAHVO_REG_USBR 0x06 /* USB control */ ++#define TAHVO_REG_CHGCTL 0x08 /* Charge control register */ ++#define TAHVO_REG_CHGCTL_EN 0x0001 /* Global charge enable */ ++#define TAHVO_REG_CHGCTL_PWMOVR 0x0004 /* PWM override. Force charge PWM to 0%/100% duty cycle. */ ++#define TAHVO_REG_CHGCTL_PWMOVRZERO 0x0008 /* If set, PWM override is 0% (If unset -> 100%) */ ++#define TAHVO_REG_CHGCTL_CURMEAS 0x0040 /* Enable battery current measurement. */ ++#define TAHVO_REG_CHGCTL_CURTIMRST 0x0080 /* Current measure timer reset. */ ++#define TAHVO_REG_BATCURRTIMER 0x0c /* Battery current measure timer (8-bit) */ ++#define TAHVO_REG_BATCURR 0x0d /* Battery (dis)charge current (signed 16-bit) */ ++ + #define TAHVO_REG_MAX 0x0d + + /* Interrupt sources */ + #define TAHVO_INT_VBUSON 0 ++#define TAHVO_INT_BATCURR 7 /* Battery current measure timer */ + + #define MAX_TAHVO_IRQ_HANDLERS 8 + diff --git a/target/linux/omap24xx/patches-2.6.38/600-tsc2005.patch b/target/linux/omap24xx/patches-2.6.38/600-tsc2005.patch new file mode 100644 index 0000000000..b491cfa7d6 --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/600-tsc2005.patch @@ -0,0 +1,1039 @@ +--- + drivers/input/touchscreen/Kconfig | 11 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/tsc2005.c | 958 ++++++++++++++++++++++++++++++++++++ + include/linux/spi/tsc2005.h | 30 + + 4 files changed, 1000 insertions(+) + +Index: linux-2.6.38-rc6/drivers/input/touchscreen/Kconfig +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/input/touchscreen/Kconfig 2011-02-22 02:25:52.000000000 +0100 ++++ linux-2.6.38-rc6/drivers/input/touchscreen/Kconfig 2011-02-24 00:23:46.456893349 +0100 +@@ -629,6 +629,17 @@ + To compile this driver as a module, choose M here: the + module will be called touchit213. + ++config TOUCHSCREEN_TSC2005 ++ tristate "TSC2005 based touchscreens" ++ depends on SPI_MASTER ++ help ++ Say Y here if you have a TSC2005 based touchscreen. ++ ++ If unsure, say N. ++ ++ To compile this driver as a module, choose M here: the ++ module will be called tsc2005. ++ + config TOUCHSCREEN_TSC2007 + tristate "TSC2007 based touchscreens" + depends on I2C +Index: linux-2.6.38-rc6/drivers/input/touchscreen/Makefile +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/input/touchscreen/Makefile 2011-02-22 02:25:52.000000000 +0100 ++++ linux-2.6.38-rc6/drivers/input/touchscreen/Makefile 2011-02-24 00:23:46.457893305 +0100 +@@ -45,6 +45,7 @@ + obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o + obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o + obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o ++obj-$(CONFIG_TOUCHSCREEN_TSC2005) += tsc2005.o + obj-$(CONFIG_TOUCHSCREEN_TSC2007) += tsc2007.o + obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o + obj-$(CONFIG_TOUCHSCREEN_WACOM_W8001) += wacom_w8001.o +Index: linux-2.6.38-rc6/drivers/input/touchscreen/tsc2005.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/input/touchscreen/tsc2005.c 2011-02-24 00:23:46.459893217 +0100 +@@ -0,0 +1,958 @@ ++/* ++ * TSC2005 touchscreen driver ++ * ++ * Copyright (C) 2006-2008 Nokia Corporation ++ * ++ * Author: Lauri Leukkunen <lauri.leukkunen@nokia.com> ++ * based on TSC2301 driver by Klaus K. Pedersen <klaus.k.pedersen@nokia.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ * ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/input.h> ++#include <linux/interrupt.h> ++#include <linux/delay.h> ++#include <linux/spi/spi.h> ++ ++#include <linux/spi/tsc2005.h> ++ ++/** ++ * The touchscreen interface operates as follows: ++ * ++ * Initialize: ++ * Request access to GPIO103 (DAV) ++ * tsc2005_ts_irq_handler will trigger when DAV line goes down ++ * ++ * 1) Pen is pressed against touchscreeen ++ * 2) TSC2005 performs AD conversion ++ * 3) After the conversion is done TSC2005 drives DAV line down ++ * 4) GPIO IRQ is received and tsc2005_ts_irq_handler is called ++ * 5) tsc2005_ts_irq_handler queues up an spi transfer to fetch ++ * the x, y, z1, z2 values ++ * 6) tsc2005_ts_rx() reports coordinates to input layer and ++ * sets up tsc2005_ts_timer() to be called after TSC2005_TS_SCAN_TIME ++ * 7) When the penup_timer expires, there have not been DAV interrupts ++ * during the last 20ms which means the pen has been lifted. ++ */ ++ ++#define TSC2005_VDD_LOWER_27 ++ ++#ifdef TSC2005_VDD_LOWER_27 ++#define TSC2005_HZ (10000000) ++#else ++#define TSC2005_HZ (25000000) ++#endif ++ ++#define TSC2005_CMD (0x80) ++#define TSC2005_REG (0x00) ++ ++#define TSC2005_CMD_STOP (1) ++#define TSC2005_CMD_10BIT (0 << 2) ++#define TSC2005_CMD_12BIT (1 << 2) ++ ++#define TSC2005_CMD_SCAN_XYZZ (0 << 3) ++#define TSC2005_CMD_SCAN_XY (1 << 3) ++#define TSC2005_CMD_SCAN_X (2 << 3) ++#define TSC2005_CMD_SCAN_Y (3 << 3) ++#define TSC2005_CMD_SCAN_ZZ (4 << 3) ++#define TSC2005_CMD_AUX_SINGLE (5 << 3) ++#define TSC2005_CMD_TEMP1 (6 << 3) ++#define TSC2005_CMD_TEMP2 (7 << 3) ++#define TSC2005_CMD_AUX_CONT (8 << 3) ++#define TSC2005_CMD_TEST_X_CONN (9 << 3) ++#define TSC2005_CMD_TEST_Y_CONN (10 << 3) ++#define TSC2005_CMD_TEST_SHORT (11 << 3) ++/* command 12 reserved, according to 2008-03 erratum */ ++#define TSC2005_CMD_DRIVE_XX (13 << 3) ++#define TSC2005_CMD_DRIVE_YY (14 << 3) ++#define TSC2005_CMD_DRIVE_YX (15 << 3) ++ ++#define TSC2005_REG_X (0 << 3) ++#define TSC2005_REG_Y (1 << 3) ++#define TSC2005_REG_Z1 (2 << 3) ++#define TSC2005_REG_Z2 (3 << 3) ++#define TSC2005_REG_AUX (4 << 3) ++#define TSC2005_REG_TEMP1 (5 << 3) ++#define TSC2005_REG_TEMP2 (6 << 3) ++#define TSC2005_REG_STATUS (7 << 3) ++#define TSC2005_REG_AUX_HIGH (8 << 3) ++#define TSC2005_REG_AUX_LOW (9 << 3) ++#define TSC2005_REG_TEMP_HIGH (10 << 3) ++#define TSC2005_REG_TEMP_LOW (11 << 3) ++#define TSC2005_REG_CFR0 (12 << 3) ++#define TSC2005_REG_CFR1 (13 << 3) ++#define TSC2005_REG_CFR2 (14 << 3) ++#define TSC2005_REG_FUNCTION (15 << 3) ++ ++#define TSC2005_REG_PND0 (1 << 1) ++#define TSC2005_REG_READ (0x01) ++#define TSC2005_REG_WRITE (0x00) ++ ++ ++#define TSC2005_CFR0_LONGSAMPLING (1) ++#define TSC2005_CFR0_DETECTINWAIT (1 << 1) ++#define TSC2005_CFR0_SENSETIME_32US (0) ++#define TSC2005_CFR0_SENSETIME_96US (1 << 2) ++#define TSC2005_CFR0_SENSETIME_544US (1 << 3) ++#define TSC2005_CFR0_SENSETIME_2080US (1 << 4) ++#define TSC2005_CFR0_SENSETIME_2656US (0x001C) ++#define TSC2005_CFR0_PRECHARGE_20US (0x0000) ++#define TSC2005_CFR0_PRECHARGE_84US (0x0020) ++#define TSC2005_CFR0_PRECHARGE_276US (0x0040) ++#define TSC2005_CFR0_PRECHARGE_1044US (0x0080) ++#define TSC2005_CFR0_PRECHARGE_1364US (0x00E0) ++#define TSC2005_CFR0_STABTIME_0US (0x0000) ++#define TSC2005_CFR0_STABTIME_100US (0x0100) ++#define TSC2005_CFR0_STABTIME_500US (0x0200) ++#define TSC2005_CFR0_STABTIME_1MS (0x0300) ++#define TSC2005_CFR0_STABTIME_5MS (0x0400) ++#define TSC2005_CFR0_STABTIME_100MS (0x0700) ++#define TSC2005_CFR0_CLOCK_4MHZ (0x0000) ++#define TSC2005_CFR0_CLOCK_2MHZ (0x0800) ++#define TSC2005_CFR0_CLOCK_1MHZ (0x1000) ++#define TSC2005_CFR0_RESOLUTION12 (0x2000) ++#define TSC2005_CFR0_STATUS (0x4000) ++#define TSC2005_CFR0_PENMODE (0x8000) ++ ++#define TSC2005_CFR0_INITVALUE (TSC2005_CFR0_STABTIME_1MS | \ ++ TSC2005_CFR0_CLOCK_1MHZ | \ ++ TSC2005_CFR0_RESOLUTION12 | \ ++ TSC2005_CFR0_PRECHARGE_276US | \ ++ TSC2005_CFR0_PENMODE) ++ ++/* Bits common to both read and write of config register 0 */ ++#define TSC2005_CFR0_RW_MASK 0x3fff ++ ++#define TSC2005_CFR1_BATCHDELAY_0MS (0x0000) ++#define TSC2005_CFR1_BATCHDELAY_1MS (0x0001) ++#define TSC2005_CFR1_BATCHDELAY_2MS (0x0002) ++#define TSC2005_CFR1_BATCHDELAY_4MS (0x0003) ++#define TSC2005_CFR1_BATCHDELAY_10MS (0x0004) ++#define TSC2005_CFR1_BATCHDELAY_20MS (0x0005) ++#define TSC2005_CFR1_BATCHDELAY_40MS (0x0006) ++#define TSC2005_CFR1_BATCHDELAY_100MS (0x0007) ++ ++#define TSC2005_CFR1_INITVALUE (TSC2005_CFR1_BATCHDELAY_4MS) ++ ++#define TSC2005_CFR2_MAVE_TEMP (0x0001) ++#define TSC2005_CFR2_MAVE_AUX (0x0002) ++#define TSC2005_CFR2_MAVE_Z (0x0004) ++#define TSC2005_CFR2_MAVE_Y (0x0008) ++#define TSC2005_CFR2_MAVE_X (0x0010) ++#define TSC2005_CFR2_AVG_1 (0x0000) ++#define TSC2005_CFR2_AVG_3 (0x0400) ++#define TSC2005_CFR2_AVG_7 (0x0800) ++#define TSC2005_CFR2_MEDIUM_1 (0x0000) ++#define TSC2005_CFR2_MEDIUM_3 (0x1000) ++#define TSC2005_CFR2_MEDIUM_7 (0x2000) ++#define TSC2005_CFR2_MEDIUM_15 (0x3000) ++ ++#define TSC2005_CFR2_IRQ_MASK (0xC000) ++#define TSC2005_CFR2_IRQ_DAV (0x4000) ++#define TSC2005_CFR2_IRQ_PEN (0x8000) ++#define TSC2005_CFR2_IRQ_PENDAV (0x0000) ++ ++#define TSC2005_CFR2_INITVALUE (TSC2005_CFR2_IRQ_PENDAV | \ ++ TSC2005_CFR2_MAVE_X | \ ++ TSC2005_CFR2_MAVE_Y | \ ++ TSC2005_CFR2_MAVE_Z | \ ++ TSC2005_CFR2_MEDIUM_15 | \ ++ TSC2005_CFR2_AVG_7) ++ ++#define MAX_12BIT ((1 << 12) - 1) ++#define TS_SAMPLES 4 ++#define TSC2005_TS_PENUP_TIME 40 ++ ++static const u32 tsc2005_read_reg[] = { ++ (TSC2005_REG | TSC2005_REG_X | TSC2005_REG_READ) << 16, ++ (TSC2005_REG | TSC2005_REG_Y | TSC2005_REG_READ) << 16, ++ (TSC2005_REG | TSC2005_REG_Z1 | TSC2005_REG_READ) << 16, ++ (TSC2005_REG | TSC2005_REG_Z2 | TSC2005_REG_READ) << 16, ++}; ++#define NUM_READ_REGS (sizeof(tsc2005_read_reg)/sizeof(tsc2005_read_reg[0])) ++ ++struct tsc2005 { ++ struct spi_device *spi; ++ ++ struct input_dev *idev; ++ char phys[32]; ++ struct timer_list penup_timer; ++ ++ /* ESD recovery via a hardware reset if the tsc2005 ++ * doesn't respond after a configurable period (in ms) of ++ * IRQ/SPI inactivity. If esd_timeout is 0, timer and work ++ * fields are used. ++ */ ++ u32 esd_timeout; ++ struct timer_list esd_timer; ++ struct work_struct esd_work; ++ ++ spinlock_t lock; ++ struct mutex mutex; ++ ++ struct spi_message read_msg; ++ struct spi_transfer read_xfer[NUM_READ_REGS]; ++ u32 data[NUM_READ_REGS]; ++ ++ /* previously reported x,y,p (if pen_down) */ ++ int out_x; ++ int out_y; ++ int out_p; ++ /* fudge parameters - changes must exceed one of these. */ ++ int fudge_x; ++ int fudge_y; ++ int fudge_p; ++ /* raw copy of previous x,y,z */ ++ int in_x; ++ int in_y; ++ int in_z1; ++ int in_z2; ++ /* average accumulators for each component */ ++ int sample_cnt; ++ int avg_x; ++ int avg_y; ++ int avg_z1; ++ int avg_z2; ++ /* configuration */ ++ int x_plate_ohm; ++ int hw_avg_max; ++ int stab_time; ++ int p_max; ++ int touch_pressure; ++ /* status */ ++ u8 sample_sent; ++ u8 pen_down; ++ u8 disabled; ++ u8 disable_depth; ++ u8 spi_pending; ++ ++ void (*set_reset)(bool enable); ++}; ++ ++static void tsc2005_cmd(struct tsc2005 *ts, u8 cmd) ++{ ++ u8 data = TSC2005_CMD | TSC2005_CMD_12BIT | cmd; ++ struct spi_message msg; ++ struct spi_transfer xfer = { 0 }; ++ ++ xfer.tx_buf = &data; ++ xfer.rx_buf = NULL; ++ xfer.len = 1; ++ xfer.bits_per_word = 8; ++ ++ spi_message_init(&msg); ++ spi_message_add_tail(&xfer, &msg); ++ spi_sync(ts->spi, &msg); ++} ++ ++static void tsc2005_write(struct tsc2005 *ts, u8 reg, u16 value) ++{ ++ u32 tx; ++ struct spi_message msg; ++ struct spi_transfer xfer = { 0 }; ++ ++ tx = (TSC2005_REG | reg | TSC2005_REG_PND0 | ++ TSC2005_REG_WRITE) << 16; ++ tx |= value; ++ ++ xfer.tx_buf = &tx; ++ xfer.rx_buf = NULL; ++ xfer.len = 4; ++ xfer.bits_per_word = 24; ++ ++ spi_message_init(&msg); ++ spi_message_add_tail(&xfer, &msg); ++ spi_sync(ts->spi, &msg); ++} ++ ++static void tsc2005_read(struct tsc2005 *ts, u8 reg, u16 *value) ++{ ++ u32 tx; ++ u32 rx = 0; ++ struct spi_message msg; ++ struct spi_transfer xfer = { 0 }; ++ ++ tx = (TSC2005_REG | reg | TSC2005_REG_READ) << 16; ++ ++ xfer.tx_buf = &tx; ++ xfer.rx_buf = ℞ ++ xfer.len = 4; ++ xfer.bits_per_word = 24; ++ ++ spi_message_init(&msg); ++ spi_message_add_tail(&xfer, &msg); ++ spi_sync(ts->spi, &msg); ++ *value = rx; ++} ++ ++static void tsc2005_ts_update_pen_state(struct tsc2005 *ts, ++ int x, int y, int pressure) ++{ ++ if (pressure) { ++ input_report_abs(ts->idev, ABS_X, x); ++ input_report_abs(ts->idev, ABS_Y, y); ++ input_report_abs(ts->idev, ABS_PRESSURE, pressure); ++ if (!ts->pen_down) { ++ input_report_key(ts->idev, BTN_TOUCH, 1); ++ ts->pen_down = 1; ++ } ++ } else { ++ input_report_abs(ts->idev, ABS_PRESSURE, 0); ++ if (ts->pen_down) { ++ input_report_key(ts->idev, BTN_TOUCH, 0); ++ ts->pen_down = 0; ++ } ++ } ++ ++ input_sync(ts->idev); ++} ++ ++/* ++ * This function is called by the SPI framework after the coordinates ++ * have been read from TSC2005 ++ */ ++static void tsc2005_ts_rx(void *arg) ++{ ++ struct tsc2005 *ts = arg; ++ unsigned long flags; ++ int inside_rect, pressure_limit; ++ int x, y, z1, z2, pressure; ++ ++ spin_lock_irqsave(&ts->lock, flags); ++ ++ if (ts->disable_depth) { ++ ts->spi_pending = 0; ++ goto out; ++ } ++ ++ x = ts->data[0]; ++ y = ts->data[1]; ++ z1 = ts->data[2]; ++ z2 = ts->data[3]; ++ ++ /* validate pressure and position */ ++ if (x > MAX_12BIT || y > MAX_12BIT) ++ goto out; ++ ++ /* skip coords if the pressure-components are out of range */ ++ if (z1 < 100 || z2 > MAX_12BIT || z1 >= z2) ++ goto out; ++ ++ /* skip point if this is a pen down with the exact same values as ++ * the value before pen-up - that implies SPI fed us stale data ++ */ ++ if (!ts->pen_down && ++ ts->in_x == x && ++ ts->in_y == y && ++ ts->in_z1 == z1 && ++ ts->in_z2 == z2) ++ goto out; ++ ++ /* At this point we are happy we have a valid and useful reading. ++ * Remember it for later comparisons. We may now begin downsampling ++ */ ++ ts->in_x = x; ++ ts->in_y = y; ++ ts->in_z1 = z1; ++ ts->in_z2 = z2; ++ ++ /* don't run average on the "pen down" event */ ++ if (ts->sample_sent) { ++ ts->avg_x += x; ++ ts->avg_y += y; ++ ts->avg_z1 += z1; ++ ts->avg_z2 += z2; ++ ++ if (++ts->sample_cnt < TS_SAMPLES) ++ goto out; ++ ++ x = ts->avg_x / TS_SAMPLES; ++ y = ts->avg_y / TS_SAMPLES; ++ z1 = ts->avg_z1 / TS_SAMPLES; ++ z2 = ts->avg_z2 / TS_SAMPLES; ++ } ++ ++ ts->sample_cnt = 0; ++ ts->avg_x = 0; ++ ts->avg_y = 0; ++ ts->avg_z1 = 0; ++ ts->avg_z2 = 0; ++ ++ pressure = x * (z2 - z1) / z1; ++ pressure = pressure * ts->x_plate_ohm / 4096; ++ ++ pressure_limit = ts->sample_sent ? ts->p_max : ts->touch_pressure; ++ if (pressure > pressure_limit) ++ goto out; ++ ++ /* Discard the event if it still is within the previous rect - ++ * unless the pressure is clearly harder, but then use previous ++ * x,y position. If any coordinate deviates enough, fudging ++ * of all three will still take place in the input layer. ++ */ ++ inside_rect = (ts->sample_sent && ++ x > (int)ts->out_x - ts->fudge_x && ++ x < (int)ts->out_x + ts->fudge_x && ++ y > (int)ts->out_y - ts->fudge_y && ++ y < (int)ts->out_y + ts->fudge_y); ++ if (inside_rect) ++ x = ts->out_x, y = ts->out_y; ++ ++ if (!inside_rect || pressure < (ts->out_p - ts->fudge_p)) { ++ tsc2005_ts_update_pen_state(ts, x, y, pressure); ++ ts->sample_sent = 1; ++ ts->out_x = x; ++ ts->out_y = y; ++ ts->out_p = pressure; ++ } ++out: ++ if (ts->spi_pending > 1) { ++ /* One or more interrupts (sometimes several dozens) ++ * occured while waiting for the SPI read - get ++ * another read going. ++ */ ++ ts->spi_pending = 1; ++ if (spi_async(ts->spi, &ts->read_msg)) { ++ dev_err(&ts->spi->dev, "ts: spi_async() failed"); ++ ts->spi_pending = 0; ++ } ++ } else ++ ts->spi_pending = 0; ++ ++ /* kick pen up timer - to make sure it expires again(!) */ ++ if (ts->sample_sent) { ++ mod_timer(&ts->penup_timer, ++ jiffies + msecs_to_jiffies(TSC2005_TS_PENUP_TIME)); ++ /* Also kick the watchdog, as we still think we're alive */ ++ if (ts->esd_timeout && ts->disable_depth == 0) { ++ unsigned long wdj = msecs_to_jiffies(ts->esd_timeout); ++ mod_timer(&ts->esd_timer, round_jiffies(jiffies+wdj)); ++ } ++ } ++ spin_unlock_irqrestore(&ts->lock, flags); ++} ++ ++/* This penup timer is very forgiving of delayed SPI reads. The ++ * (ESD) watchdog will rescue us if spi_pending remains set, unless ++ * we are enterring the disabled state. In that case we must just ++ * handle the pen up, and let disabling complete. ++ */ ++static void tsc2005_ts_penup_timer_handler(unsigned long data) ++{ ++ struct tsc2005 *ts = (struct tsc2005 *)data; ++ if ((!ts->spi_pending || ts->disable_depth) && ++ ts->sample_sent) { ++ tsc2005_ts_update_pen_state(ts, 0, 0, 0); ++ ts->sample_sent = 0; ++ } ++} ++ ++/* ++ * This interrupt is called when pen is down and coordinates are ++ * available. That is indicated by a either: ++ * a) a rising edge on PINTDAV or (PENDAV mode) ++ * b) a falling edge on DAV line (DAV mode) ++ * depending on the setting of the IRQ bits in the CFR2 setting above. ++ */ ++static irqreturn_t tsc2005_ts_irq_handler(int irq, void *dev_id) ++{ ++ struct tsc2005 *ts = dev_id; ++ if (ts->disable_depth) ++ goto out; ++ ++ if (!ts->spi_pending) { ++ if (spi_async(ts->spi, &ts->read_msg)) { ++ dev_err(&ts->spi->dev, "ts: spi_async() failed"); ++ goto out; ++ } ++ } ++ /* By shifting in 1s we can never wrap */ ++ ts->spi_pending = (ts->spi_pending<<1)+1; ++ ++ /* Kick pen up timer only if it's not been started yet. Strictly, ++ * it isn't even necessary to start it at all here, but doing so ++ * keeps an equivalence between pen state and timer state. ++ * The SPI read loop will keep pushing it into the future. ++ * If it times out with an SPI pending, it's ignored anyway. ++ */ ++ if (!timer_pending(&ts->penup_timer)) { ++ unsigned long pu = msecs_to_jiffies(TSC2005_TS_PENUP_TIME); ++ ts->penup_timer.expires = jiffies + pu; ++ add_timer(&ts->penup_timer); ++ } ++out: ++ return IRQ_HANDLED; ++} ++ ++static void tsc2005_ts_setup_spi_xfer(struct tsc2005 *ts) ++{ ++ struct spi_message *m = &ts->read_msg; ++ struct spi_transfer *x = &ts->read_xfer[0]; ++ int i; ++ ++ spi_message_init(m); ++ ++ for (i = 0; i < NUM_READ_REGS; i++, x++) { ++ x->tx_buf = &tsc2005_read_reg[i]; ++ x->rx_buf = &ts->data[i]; ++ x->len = 4; ++ x->bits_per_word = 24; ++ x->cs_change = i < (NUM_READ_REGS - 1); ++ spi_message_add_tail(x, m); ++ } ++ ++ m->complete = tsc2005_ts_rx; ++ m->context = ts; ++} ++ ++static ssize_t tsc2005_ts_pen_down_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct tsc2005 *ts = dev_get_drvdata(dev); ++ ++ return sprintf(buf, "%u\n", ts->pen_down); ++} ++ ++static DEVICE_ATTR(pen_down, S_IRUGO, tsc2005_ts_pen_down_show, NULL); ++ ++static int tsc2005_configure(struct tsc2005 *ts, int flags) ++{ ++ tsc2005_write(ts, TSC2005_REG_CFR0, TSC2005_CFR0_INITVALUE); ++ tsc2005_write(ts, TSC2005_REG_CFR1, TSC2005_CFR1_INITVALUE); ++ tsc2005_write(ts, TSC2005_REG_CFR2, TSC2005_CFR2_INITVALUE); ++ tsc2005_cmd(ts, flags); ++ ++ return 0; ++} ++ ++static void tsc2005_start_scan(struct tsc2005 *ts) ++{ ++ tsc2005_configure(ts, TSC2005_CMD_SCAN_XYZZ); ++} ++ ++static void tsc2005_stop_scan(struct tsc2005 *ts) ++{ ++ tsc2005_cmd(ts, TSC2005_CMD_STOP); ++} ++ ++/* Must be called with mutex held */ ++static void tsc2005_disable(struct tsc2005 *ts) ++{ ++ if (ts->disable_depth++ != 0) ++ return; ++ ++ disable_irq(ts->spi->irq); ++ if (ts->esd_timeout) ++ del_timer(&ts->esd_timer); ++ ++ /* wait until penup timer expire normally */ ++ do { ++ msleep(4); ++ } while (ts->sample_sent); ++ ++ tsc2005_stop_scan(ts); ++} ++ ++static void tsc2005_enable(struct tsc2005 *ts) ++{ ++ if (ts->disable_depth != 1) ++ goto out; ++ ++ if (ts->esd_timeout) { ++ unsigned long wdj = msecs_to_jiffies(ts->esd_timeout); ++ ts->esd_timer.expires = round_jiffies(jiffies+wdj); ++ add_timer(&ts->esd_timer); ++ } ++ tsc2005_start_scan(ts); ++ enable_irq(ts->spi->irq); ++out: ++ --ts->disable_depth; ++} ++ ++static ssize_t tsc2005_disable_show(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ struct tsc2005 *ts = dev_get_drvdata(dev); ++ ++ return sprintf(buf, "%u\n", ts->disabled); ++} ++ ++static ssize_t tsc2005_disable_store(struct device *dev, ++ struct device_attribute *attr, ++ const char *buf, size_t count) ++{ ++ struct tsc2005 *ts = dev_get_drvdata(dev); ++ unsigned long res; ++ int i; ++ ++ if (strict_strtoul(buf, 10, &res) < 0) ++ return -EINVAL; ++ i = res ? 1 : 0; ++ ++ mutex_lock(&ts->mutex); ++ if (i == ts->disabled) ++ goto out; ++ ts->disabled = i; ++ ++ if (i) ++ tsc2005_disable(ts); ++ else ++ tsc2005_enable(ts); ++out: ++ mutex_unlock(&ts->mutex); ++ return count; ++} ++ ++static DEVICE_ATTR(disable_ts, 0664, tsc2005_disable_show, ++ tsc2005_disable_store); ++ ++static ssize_t tsc2005_ctrl_selftest_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ u16 temp_high_orig, temp_high_test, temp_high; ++ unsigned int result = 1; ++ struct tsc2005 *ts = dev_get_drvdata(dev); ++ ++ if (!ts->set_reset) { ++ dev_warn(&ts->spi->dev, ++ "unable to selftest: reset not configured\n"); ++ result = 0; ++ goto out; ++ } ++ ++ mutex_lock(&ts->mutex); ++ tsc2005_disable(ts); ++ ++ /* Test ctrl communications via temp high / low registers */ ++ tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high_orig); ++ ++ temp_high_test = (temp_high_orig - 1) & 0x0FFF; ++ ++ tsc2005_write(ts, TSC2005_REG_TEMP_HIGH, temp_high_test); ++ ++ tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high); ++ ++ if (temp_high != temp_high_test) { ++ result = 0; ++ dev_warn(dev, "selftest failed: %d != %d\n", ++ temp_high, temp_high_test); ++ } ++ ++ /* HW Reset */ ++ ts->set_reset(0); ++ msleep(1); /* only 10us required */ ++ ts->set_reset(1); ++ ++ tsc2005_enable(ts); ++ ++ /* Test that reset really happened */ ++ tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high); ++ ++ if (temp_high != temp_high_orig) { ++ result = 0; ++ dev_warn(dev, "selftest failed after reset: " ++ "%d != %d\n", ++ temp_high, temp_high_orig); ++ } ++ ++ mutex_unlock(&ts->mutex); ++ ++out: ++ return sprintf(buf, "%u\n", result); ++} ++ ++static DEVICE_ATTR(ts_ctrl_selftest, S_IRUGO, tsc2005_ctrl_selftest_show, NULL); ++ ++static void tsc2005_esd_timer_handler(unsigned long data) ++{ ++ struct tsc2005 *ts = (struct tsc2005 *)data; ++ if (!ts->disable_depth) ++ schedule_work(&ts->esd_work); ++} ++ ++static void tsc2005_rst_handler(struct work_struct *work) ++{ ++ u16 reg_val; ++ struct tsc2005 *ts = container_of(work, struct tsc2005, esd_work); ++ unsigned long wdj; ++ ++ mutex_lock(&ts->mutex); ++ ++ /* If we are disabled, or the a touch has been detected, ++ * then ignore this timeout. The enable will restart the ++ * watchdog, as it restarts scanning ++ */ ++ if (ts->disable_depth) ++ goto out; ++ ++ /* If we cannot read our known value from configuration register 0 ++ * then reset the controller as if from power-up and start ++ * scanning again. Always re-arm the watchdog. ++ */ ++ tsc2005_read(ts, TSC2005_REG_CFR0, ®_val); ++ if ((reg_val ^ TSC2005_CFR0_INITVALUE) & TSC2005_CFR0_RW_MASK) { ++ dev_info(&ts->spi->dev, "TSC not responding, resetting.\n"); ++ /* If this timer kicked in, the penup timer, if ever active ++ * at all, must have expired ages ago, so no need to del it. ++ */ ++ ts->set_reset(0); ++ if (ts->sample_sent) { ++ tsc2005_ts_update_pen_state(ts, 0, 0, 0); ++ ts->sample_sent = 0; ++ } ++ ts->spi_pending = 0; ++ msleep(1); /* only 10us required */ ++ ts->set_reset(1); ++ tsc2005_start_scan(ts); ++ } ++ wdj = msecs_to_jiffies(ts->esd_timeout); ++ mod_timer(&ts->esd_timer, round_jiffies(jiffies+wdj)); ++ ++out: ++ mutex_unlock(&ts->mutex); ++} ++ ++static int __devinit tsc2005_ts_init(struct tsc2005 *ts, ++ struct tsc2005_platform_data *pdata) ++{ ++ struct input_dev *idev; ++ int r; ++ int x_max, y_max; ++ ++ init_timer(&ts->penup_timer); ++ setup_timer(&ts->penup_timer, tsc2005_ts_penup_timer_handler, ++ (unsigned long)ts); ++ ++ spin_lock_init(&ts->lock); ++ mutex_init(&ts->mutex); ++ ++ ts->x_plate_ohm = pdata->ts_x_plate_ohm ? : 280; ++ ts->hw_avg_max = pdata->ts_hw_avg; ++ ts->stab_time = pdata->ts_stab_time; ++ x_max = pdata->ts_x_max ? : 4096; ++ ts->fudge_x = pdata->ts_x_fudge ? : 4; ++ y_max = pdata->ts_y_max ? : 4096; ++ ts->fudge_y = pdata->ts_y_fudge ? : 8; ++ ts->p_max = pdata->ts_pressure_max ? : MAX_12BIT; ++ ts->touch_pressure = pdata->ts_touch_pressure ? : ts->p_max; ++ ts->fudge_p = pdata->ts_pressure_fudge ? : 2; ++ ++ ts->set_reset = pdata->set_reset; ++ ++ idev = input_allocate_device(); ++ if (idev == NULL) { ++ r = -ENOMEM; ++ goto err1; ++ } ++ ++ idev->name = "TSC2005 touchscreen"; ++ snprintf(ts->phys, sizeof(ts->phys), "%s/input-ts", ++ dev_name(&ts->spi->dev)); ++ idev->phys = ts->phys; ++ ++ idev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY); ++ idev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE); ++ idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); ++ ts->idev = idev; ++ ++ tsc2005_ts_setup_spi_xfer(ts); ++ ++ input_set_abs_params(idev, ABS_X, 0, x_max, ts->fudge_x, 0); ++ input_set_abs_params(idev, ABS_Y, 0, y_max, ts->fudge_y, 0); ++ input_set_abs_params(idev, ABS_PRESSURE, 0, ts->p_max, ts->fudge_p, 0); ++ ++ tsc2005_start_scan(ts); ++ ++ r = request_irq(ts->spi->irq, tsc2005_ts_irq_handler, ++ (((TSC2005_CFR2_INITVALUE & TSC2005_CFR2_IRQ_MASK) == ++ TSC2005_CFR2_IRQ_PENDAV) ++ ? IRQF_TRIGGER_RISING ++ : IRQF_TRIGGER_FALLING) | ++ IRQF_DISABLED, "tsc2005", ts); ++ if (r < 0) { ++ dev_err(&ts->spi->dev, "unable to get DAV IRQ"); ++ goto err2; ++ } ++ ++ set_irq_wake(ts->spi->irq, 1); ++ ++ r = input_register_device(idev); ++ if (r < 0) { ++ dev_err(&ts->spi->dev, "can't register touchscreen device\n"); ++ goto err3; ++ } ++ ++ /* We can tolerate these failing */ ++ r = device_create_file(&ts->spi->dev, &dev_attr_ts_ctrl_selftest); ++ if (r < 0) ++ dev_warn(&ts->spi->dev, "can't create sysfs file for %s: %d\n", ++ dev_attr_ts_ctrl_selftest.attr.name, r); ++ ++ r = device_create_file(&ts->spi->dev, &dev_attr_pen_down); ++ if (r < 0) ++ dev_warn(&ts->spi->dev, "can't create sysfs file for %s: %d\n", ++ dev_attr_pen_down.attr.name, r); ++ ++ r = device_create_file(&ts->spi->dev, &dev_attr_disable_ts); ++ if (r < 0) ++ dev_warn(&ts->spi->dev, "can't create sysfs file for %s: %d\n", ++ dev_attr_disable_ts.attr.name, r); ++ ++ /* Finally, configure and start the optional EDD watchdog. */ ++ ts->esd_timeout = pdata->esd_timeout; ++ if (ts->esd_timeout && ts->set_reset) { ++ unsigned long wdj; ++ setup_timer(&ts->esd_timer, tsc2005_esd_timer_handler, ++ (unsigned long)ts); ++ INIT_WORK(&ts->esd_work, tsc2005_rst_handler); ++ wdj = msecs_to_jiffies(ts->esd_timeout); ++ ts->esd_timer.expires = round_jiffies(jiffies+wdj); ++ add_timer(&ts->esd_timer); ++ } ++ ++ return 0; ++err3: ++ free_irq(ts->spi->irq, ts); ++err2: ++ tsc2005_stop_scan(ts); ++ input_free_device(idev); ++err1: ++ return r; ++} ++ ++static int __devinit tsc2005_probe(struct spi_device *spi) ++{ ++ struct tsc2005 *ts; ++ struct tsc2005_platform_data *pdata = spi->dev.platform_data; ++ int r; ++ ++ if (spi->irq < 0) { ++ dev_dbg(&spi->dev, "no irq?\n"); ++ return -ENODEV; ++ } ++ if (!pdata) { ++ dev_dbg(&spi->dev, "no platform data?\n"); ++ return -ENODEV; ++ } ++ ++ ts = kzalloc(sizeof(*ts), GFP_KERNEL); ++ if (ts == NULL) ++ return -ENOMEM; ++ ++ dev_set_drvdata(&spi->dev, ts); ++ ts->spi = spi; ++ spi->dev.power.power_state = PMSG_ON; ++ ++ spi->mode = SPI_MODE_0; ++ spi->bits_per_word = 8; ++ /* The max speed might've been defined by the board-specific ++ * struct */ ++ if (!spi->max_speed_hz) ++ spi->max_speed_hz = TSC2005_HZ; ++ ++ spi_setup(spi); ++ ++ r = tsc2005_ts_init(ts, pdata); ++ if (r) ++ goto err1; ++ ++ return 0; ++ ++err1: ++ kfree(ts); ++ return r; ++} ++ ++static int __devexit tsc2005_remove(struct spi_device *spi) ++{ ++ struct tsc2005 *ts = dev_get_drvdata(&spi->dev); ++ ++ mutex_lock(&ts->mutex); ++ tsc2005_disable(ts); ++ mutex_unlock(&ts->mutex); ++ ++ device_remove_file(&ts->spi->dev, &dev_attr_disable_ts); ++ device_remove_file(&ts->spi->dev, &dev_attr_pen_down); ++ device_remove_file(&ts->spi->dev, &dev_attr_ts_ctrl_selftest); ++ ++ free_irq(ts->spi->irq, ts); ++ input_unregister_device(ts->idev); ++ ++ if (ts->esd_timeout) ++ del_timer(&ts->esd_timer); ++ kfree(ts); ++ ++ return 0; ++} ++ ++#ifdef CONFIG_PM ++static int tsc2005_suspend(struct spi_device *spi, pm_message_t mesg) ++{ ++ struct tsc2005 *ts = dev_get_drvdata(&spi->dev); ++ ++ mutex_lock(&ts->mutex); ++ tsc2005_disable(ts); ++ mutex_unlock(&ts->mutex); ++ ++ return 0; ++} ++ ++static int tsc2005_resume(struct spi_device *spi) ++{ ++ struct tsc2005 *ts = dev_get_drvdata(&spi->dev); ++ ++ mutex_lock(&ts->mutex); ++ tsc2005_enable(ts); ++ mutex_unlock(&ts->mutex); ++ ++ return 0; ++} ++#endif ++ ++static struct spi_driver tsc2005_driver = { ++ .driver = { ++ .name = "tsc2005", ++ .owner = THIS_MODULE, ++ }, ++#ifdef CONFIG_PM ++ .suspend = tsc2005_suspend, ++ .resume = tsc2005_resume, ++#endif ++ .probe = tsc2005_probe, ++ .remove = __devexit_p(tsc2005_remove), ++}; ++ ++static int __init tsc2005_init(void) ++{ ++ printk(KERN_INFO "TSC2005 driver initializing\n"); ++ ++ return spi_register_driver(&tsc2005_driver); ++} ++module_init(tsc2005_init); ++ ++static void __exit tsc2005_exit(void) ++{ ++ spi_unregister_driver(&tsc2005_driver); ++} ++module_exit(tsc2005_exit); ++ ++MODULE_AUTHOR("Lauri Leukkunen <lauri.leukkunen@nokia.com>"); ++MODULE_LICENSE("GPL"); ++MODULE_ALIAS("platform:tsc2005"); +Index: linux-2.6.38-rc6/include/linux/spi/tsc2005.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/include/linux/spi/tsc2005.h 2011-02-24 00:23:46.459893217 +0100 +@@ -0,0 +1,30 @@ ++#ifndef _LINUX_SPI_TSC2005_H ++#define _LINUX_SPI_TSC2005_H ++ ++#include <linux/types.h> ++ ++struct tsc2005_platform_data { ++ u16 ts_x_plate_ohm; ++ u32 ts_stab_time; /* voltage settling time */ ++ u8 ts_hw_avg; /* HW assiseted averaging. Can be ++ 0, 4, 8, 16 samples per reading */ ++ u32 ts_touch_pressure; /* Pressure limit until we report a ++ touch event. After that we switch ++ to ts_max_pressure. */ ++ u32 ts_pressure_max;/* Samples with bigger pressure value will ++ be ignored, since the corresponding X, Y ++ values are unreliable */ ++ u32 ts_pressure_fudge; ++ u32 ts_x_max; ++ u32 ts_x_fudge; ++ u32 ts_y_max; ++ u32 ts_y_fudge; ++ ++ u32 esd_timeout; /* msec of inactivity before we check */ ++ ++ unsigned ts_ignore_last:1; ++ ++ void (*set_reset)(bool enable); ++}; ++ ++#endif diff --git a/target/linux/omap24xx/patches-2.6.38/710-evdev-events-without-grab.patch b/target/linux/omap24xx/patches-2.6.38/710-evdev-events-without-grab.patch new file mode 100644 index 0000000000..c483eab2a0 --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/710-evdev-events-without-grab.patch @@ -0,0 +1,33 @@ +--- + drivers/input/evdev.c | 10 +++++++--- + 1 file changed, 7 insertions(+), 3 deletions(-) + +Index: linux-2.6.38-rc6/drivers/input/evdev.c +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/input/evdev.c 2011-02-22 02:25:52.000000000 +0100 ++++ linux-2.6.38-rc6/drivers/input/evdev.c 2011-02-24 00:23:52.155643164 +0100 +@@ -78,7 +78,7 @@ + unsigned int type, unsigned int code, int value) + { + struct evdev *evdev = handle->private; +- struct evdev_client *client; ++ struct evdev_client *client, *c; + struct input_event event; + + do_gettimeofday(&event.time); +@@ -89,9 +89,13 @@ + rcu_read_lock(); + + client = rcu_dereference(evdev->grab); +- if (client) ++ if (client) { + evdev_pass_event(client, &event); +- else ++ /* Also pass events to clients that did not grab the device. */ ++ list_for_each_entry_rcu(c, &evdev->client_list, node) ++ if (c != client) ++ evdev_pass_event(c, &event); ++ } else + list_for_each_entry_rcu(client, &evdev->client_list, node) + evdev_pass_event(client, &event); + diff --git a/target/linux/omap24xx/patches-2.6.38/810-mmc-fixes.patch b/target/linux/omap24xx/patches-2.6.38/810-mmc-fixes.patch new file mode 100644 index 0000000000..3142855409 --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/810-mmc-fixes.patch @@ -0,0 +1,70 @@ +--- + drivers/mmc/core/core.c | 5 +++-- + drivers/mmc/host/omap.c | 7 +++++-- + include/linux/mmc/host.h | 2 ++ + 3 files changed, 10 insertions(+), 4 deletions(-) + +Index: linux-2.6.38-rc6/drivers/mmc/host/omap.c +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/mmc/host/omap.c 2011-02-22 02:25:52.000000000 +0100 ++++ linux-2.6.38-rc6/drivers/mmc/host/omap.c 2011-02-24 00:40:46.129908862 +0100 +@@ -389,7 +389,7 @@ + + mod_timer(&host->cmd_abort_timer, jiffies + HZ/2); + +- OMAP_MMC_WRITE(host, CTO, 200); ++// OMAP_MMC_WRITE(host, CTO, 200); + OMAP_MMC_WRITE(host, ARGL, cmd->arg & 0xffff); + OMAP_MMC_WRITE(host, ARGH, cmd->arg >> 16); + OMAP_MMC_WRITE(host, IE, +@@ -1456,6 +1456,7 @@ + host->dma_ch = -1; + + host->irq = irq; ++ host->reg_shift = (cpu_is_omap7xx() ? 1 : 2); + host->phys_base = host->mem_res->start; + host->virt_base = ioremap(res->start, res->end - res->start + 1); + if (!host->virt_base) +@@ -1495,7 +1496,9 @@ + } + } + +- host->reg_shift = (cpu_is_omap7xx() ? 1 : 2); ++ /* Make sure the detect workqueue was run at least once. */ ++ printk(KERN_INFO "OMAP-mmc: waiting for cards...\n"); ++ mmc_flush_scheduled_work(); + + return 0; + +Index: linux-2.6.38-rc6/drivers/mmc/core/core.c +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/mmc/core/core.c 2011-02-22 02:25:52.000000000 +0100 ++++ linux-2.6.38-rc6/drivers/mmc/core/core.c 2011-02-24 00:40:46.131908784 +0100 +@@ -75,12 +75,13 @@ + } + + /* +- * Internal function. Flush all scheduled work from the MMC work queue. ++ * Flush all scheduled work from the MMC work queue. + */ +-static void mmc_flush_scheduled_work(void) ++void mmc_flush_scheduled_work(void) + { + flush_workqueue(workqueue); + } ++EXPORT_SYMBOL(mmc_flush_scheduled_work); + + /** + * mmc_request_done - finish processing an MMC request +Index: linux-2.6.38-rc6/include/linux/mmc/host.h +=================================================================== +--- linux-2.6.38-rc6.orig/include/linux/mmc/host.h 2011-02-22 02:25:52.000000000 +0100 ++++ linux-2.6.38-rc6/include/linux/mmc/host.h 2011-02-24 00:40:46.131908784 +0100 +@@ -326,5 +326,7 @@ + return host->pm_flags & MMC_PM_KEEP_POWER; + } + ++void mmc_flush_scheduled_work(void); ++ + #endif + diff --git a/target/linux/omap24xx/patches-2.6.38/820-backlight-fixes.patch b/target/linux/omap24xx/patches-2.6.38/820-backlight-fixes.patch new file mode 100644 index 0000000000..040d08b9f2 --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/820-backlight-fixes.patch @@ -0,0 +1,35 @@ +--- + arch/arm/mach-omap2/board-n8x0-lcd.c | 18 ++++++++++++++++++ + 1 file changed, 18 insertions(+) + +Index: linux-2.6.38-rc6/arch/arm/mach-omap2/board-n8x0-lcd.c +=================================================================== +--- linux-2.6.38-rc6.orig/arch/arm/mach-omap2/board-n8x0-lcd.c 2011-02-24 12:37:51.702386250 +0100 ++++ linux-2.6.38-rc6/arch/arm/mach-omap2/board-n8x0-lcd.c 2011-02-24 12:39:35.223028410 +0100 +@@ -34,8 +34,26 @@ + } + } + ++static int n8x0_get_backlight_level(struct mipid_platform_data *pdata) ++{ ++ return tahvo_get_backlight_level(); ++} ++ ++static int n8x0_get_max_backlight_level(struct mipid_platform_data *pdata) ++{ ++ return tahvo_get_max_backlight_level(); ++} ++ ++static void n8x0_set_backlight_level(struct mipid_platform_data *pdata, int level) ++{ ++ tahvo_set_backlight_level(level); ++} ++ + struct mipid_platform_data n8x0_mipid_platform_data = { + .shutdown = mipid_shutdown, ++ .get_bklight_level = n8x0_get_backlight_level, ++ .set_bklight_level = n8x0_set_backlight_level, ++ .get_bklight_max = n8x0_get_max_backlight_level, + }; + + void __init n8x0_mipid_init(void) diff --git a/target/linux/omap24xx/patches-2.6.38/830-omap2-serial-fixes.patch b/target/linux/omap24xx/patches-2.6.38/830-omap2-serial-fixes.patch new file mode 100644 index 0000000000..2a29a8e47f --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/830-omap2-serial-fixes.patch @@ -0,0 +1,25 @@ +Index: linux-2.6.38-rc6/arch/arm/mach-omap2/serial.c +=================================================================== +--- linux-2.6.38-rc6.orig/arch/arm/mach-omap2/serial.c 2011-02-22 02:25:52.000000000 +0100 ++++ linux-2.6.38-rc6/arch/arm/mach-omap2/serial.c 2011-02-26 22:17:38.356027926 +0100 +@@ -655,6 +655,8 @@ + } + #endif + ++static struct omap_uart_state statebuf[4]; ++ + void __init omap_serial_early_init(void) + { + int i = 0; +@@ -670,9 +672,9 @@ + if (!oh) + break; + +- uart = kzalloc(sizeof(struct omap_uart_state), GFP_KERNEL); +- if (WARN_ON(!uart)) ++ if (WARN_ON(i >= ARRAY_SIZE(statebuf))) + return; ++ uart = &statebuf[i]; + + uart->oh = oh; + uart->num = i++; diff --git a/target/linux/omap24xx/patches-2.6.38/900-n810-battery-management.patch b/target/linux/omap24xx/patches-2.6.38/900-n810-battery-management.patch new file mode 100644 index 0000000000..30295f375e --- /dev/null +++ b/target/linux/omap24xx/patches-2.6.38/900-n810-battery-management.patch @@ -0,0 +1,1948 @@ +Index: linux-2.6.38-rc6/drivers/cbus/Kconfig +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/cbus/Kconfig 2011-02-26 23:22:54.941732609 +0100 ++++ linux-2.6.38-rc6/drivers/cbus/Kconfig 2011-02-26 23:25:39.886753420 +0100 +@@ -72,4 +72,12 @@ + to Retu/Vilma. Detection state and events are exposed through + sysfs. + ++config N810BM ++ depends on CBUS_RETU && CBUS_TAHVO ++ tristate "Nokia n810 battery management" ++ ---help--- ++ Nokia n810 device battery management. ++ ++ If unsure, say N. ++ + endmenu +Index: linux-2.6.38-rc6/drivers/cbus/Makefile +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/cbus/Makefile 2011-02-26 23:22:54.927732361 +0100 ++++ linux-2.6.38-rc6/drivers/cbus/Makefile 2011-02-26 23:25:39.886753420 +0100 +@@ -11,3 +11,6 @@ + obj-$(CONFIG_CBUS_RETU_RTC) += retu-rtc.o + obj-$(CONFIG_CBUS_RETU_WDT) += retu-wdt.o + obj-$(CONFIG_CBUS_RETU_HEADSET) += retu-headset.o ++n810bm-y += n810bm_main.o ++n810bm-y += lipocharge.o ++obj-$(CONFIG_N810BM) += n810bm.o +Index: linux-2.6.38-rc6/drivers/cbus/n810bm_main.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/n810bm_main.c 2011-02-26 23:25:39.889753477 +0100 +@@ -0,0 +1,1597 @@ ++/* ++ * Nokia n810 battery management ++ * ++ * WARNING: This driver is based on unconfirmed documentation. ++ * It is possibly dangerous to use this software. ++ * Use this software at your own risk! ++ * ++ * Copyright (c) 2010-2011 Michael Buesch <mb@bu3sch.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version 2 ++ * of the License, or (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#define DEBUG ++ ++#include <linux/module.h> ++#include <linux/device.h> ++#include <linux/platform_device.h> ++#include <linux/slab.h> ++#include <linux/mutex.h> ++#include <linux/timer.h> ++#include <linux/firmware.h> ++#include <linux/bitops.h> ++#include <linux/workqueue.h> ++#include <linux/delay.h> ++ ++#include "cbus.h" ++#include "retu.h" ++#include "tahvo.h" ++#include "lipocharge.h" ++ ++ ++#define N810BM_PMM_BLOCK_FILENAME "n810-cal-bme-pmm.fw" ++#define N810BM_PMM_BLOCK_SIZE 0x600 ++#define N810BM_PMM_GROUP_SIZE 0x200 ++#define N810BM_PMM_ELEM_SIZE 0x10 ++ ++#define N810BM_CHECK_INTERVAL (HZ * 2) ++#define N810BM_MIN_VOLTAGE_THRES 3200 /* Absolute minimum voltage threshold */ ++ ++ ++/* RETU_ADC_BSI ++ * The battery size indicator ADC measures the resistance between ++ * the battery BSI pin and ground. This is used to detect the battery ++ * capacity, as the BSI resistor is related to capacity. ++ * ++ * Manually measured lookup table. ++ * Hard to measure, thus not very accurate. ++ * ++ * Resistance | ADC value ++ * ======================== ++ * 120k | 0x3AC ++ * 110k | 0x37C ++ * 100k | 0x351 ++ * 90k | 0x329 ++ */ ++ ++/* RETU_ADC_BATTVOLT ++ * Manually measured lookup table. ++ * Hard to measure, thus not very accurate. ++ * ++ * Voltage | ADC value ++ * ===================== ++ * 2.80V | 0x037 ++ * 2.90V | 0x05E ++ * 3.00V | 0x090 ++ * 3.10V | 0x0A4 ++ * 3.20V | 0x0CC ++ * 3.30V | 0x0EF ++ * 3.40V | 0x115 ++ * 3.50V | 0x136 ++ * 3.60V | 0x15C ++ * 3.70V | 0x187 ++ * 3.80V | 0x1A5 ++ * 3.90V | 0x1C9 ++ * 4.00V | 0x1ED ++ * 4.10V | 0x212 ++ * 4.20V | 0x236 ++ */ ++ ++ ++/* PMM block ADC IDs */ ++enum n810bm_pmm_adc_id { ++ N810BM_PMM_ADC_BATVOLT = 0x01, /* Battery voltage */ ++ N810BM_PMM_ADC_CHGVOLT = 0x02, /* Charger voltage */ ++ N810BM_PMM_ADC_GND2 = 0x03, /* Ground 0V */ ++ N810BM_PMM_ADC_BSI = 0x04, /* Battery size indicator */ ++ N810BM_PMM_ADC_BATTEMP = 0x05, /* Battery temperature */ ++ N810BM_PMM_ADC_HEADSET = 0x06, /* Headset detection */ ++ N810BM_PMM_ADC_HOOKDET = 0x07, /* Hook detection */ ++ N810BM_PMM_ADC_LIGHTSENS = 0x08, /* Light sensor */ ++ N810BM_PMM_ADC_BATCURR = 0x0E, /* Battery current */ ++ N810BM_PMM_ADC_BKUPVOLT = 0x13, /* Backup battery voltage */ ++ N810BM_PMM_ADC_LIGHTTEMP = 0x14, /* Light sensor temperature */ ++ N810BM_PMM_ADC_RFGP = 0x15, /* RF GP */ ++ N810BM_PMM_ADC_WBTX = 0x16, /* Wideband TX detection */ ++ N810BM_PMM_ADC_RETUTEMP = 0x17, /* RETU chip temperature */ ++ N810BM_PMM_ADC_0xFE = 0xFE, ++}; ++ ++struct n810bm_adc_calib { ++ enum n810bm_pmm_adc_id id; ++ u8 flags; ++ u8 adc_groupnr; ++ u32 field1; ++ u32 field2; ++ u16 field3; ++ u16 field4; ++}; ++ ++struct n810bm_calib { ++ struct n810bm_adc_calib adc[25]; ++}; ++ ++enum n810bm_capacity { ++ N810BM_CAP_UNKNOWN = -1, ++ N810BM_CAP_NONE = 0, ++ N810BM_CAP_1500MAH = 1500, /* 1500 mAh battery */ ++}; ++ ++enum n810bm_notify_flags { ++ N810BM_NOTIFY_battery_charging, ++ N810BM_NOTIFY_charger_pwm, ++}; ++ ++struct n810bm { ++ bool battery_present; /* A battery is inserted */ ++ bool charger_present; /* The charger is connected */ ++ enum n810bm_capacity capacity; /* The capacity of the inserted battery (if any) */ ++ ++ bool charger_enabled; /* Want to charge? */ ++ struct lipocharge charger; /* Charger subsystem */ ++ unsigned int active_current_pwm; /* Active value of TAHVO_REG_CHGCURR */ ++ int current_measure_enabled; /* Current measure enable refcount */ ++ ++ struct platform_device *pdev; ++ struct n810bm_calib calib; /* Calibration data */ ++ ++ bool verbose_charge_log; /* Verbose charge logging */ ++ ++ unsigned long notify_flags; ++ struct work_struct notify_work; ++ struct work_struct currmeas_irq_work; ++ struct delayed_work periodic_check_work; ++ ++ bool initialized; /* The hardware was initialized */ ++ struct mutex mutex; ++}; ++ ++static void n810bm_notify_battery_charging(struct n810bm *bm); ++static void n810bm_notify_charger_pwm(struct n810bm *bm); ++ ++ ++static struct platform_device *n810bm_retu_device; ++static struct platform_device *n810bm_tahvo_device; ++ ++ ++static inline struct n810bm * device_to_n810bm(struct device *dev) ++{ ++ struct platform_device *pdev = to_platform_device(dev); ++ struct n810bm *bm = platform_get_drvdata(pdev); ++ ++ return bm; ++} ++ ++static inline bool n810bm_known_battery_present(struct n810bm *bm) ++{ ++ return bm->battery_present && ++ bm->capacity != N810BM_CAP_UNKNOWN && ++ bm->capacity != N810BM_CAP_NONE; ++} ++ ++static NORET_TYPE void n810bm_emergency(struct n810bm *bm, const char *message) ATTRIB_NORET; ++static void n810bm_emergency(struct n810bm *bm, const char *message) ++{ ++ printk(KERN_EMERG "n810 battery management fatal fault: %s\n", message); ++ cbus_emergency(); ++} ++ ++static u16 tahvo_read(struct n810bm *bm, unsigned int reg) ++{ ++ return tahvo_read_reg(reg); ++} ++ ++static void tahvo_maskset(struct n810bm *bm, unsigned int reg, u16 mask, u16 set) ++{ ++ tahvo_set_clear_reg_bits(reg, set, mask); ++} ++ ++static inline void tahvo_write(struct n810bm *bm, unsigned int reg, u16 value) ++{ ++ unsigned long flags; ++ ++ spin_lock_irqsave(&tahvo_lock, flags); ++ tahvo_write_reg(reg, value); ++ spin_unlock_irqrestore(&tahvo_lock, flags); ++} ++ ++static inline void tahvo_set(struct n810bm *bm, unsigned int reg, u16 mask) ++{ ++ tahvo_set_clear_reg_bits(reg, mask, mask); ++} ++ ++static inline void tahvo_clear(struct n810bm *bm, unsigned int reg, u16 mask) ++{ ++ tahvo_set_clear_reg_bits(reg, 0, mask); ++} ++ ++static u16 retu_read(struct n810bm *bm, unsigned int reg) ++{ ++ return retu_read_reg(&n810bm_retu_device->dev, reg); ++} ++ ++static void retu_maskset(struct n810bm *bm, unsigned int reg, u16 mask, u16 set) ++{ ++ retu_set_clear_reg_bits(&n810bm_retu_device->dev, reg, set, mask); ++} ++ ++static inline void retu_write(struct n810bm *bm, unsigned int reg, u16 value) ++{ ++ retu_write_reg(&n810bm_retu_device->dev, reg, value); ++} ++ ++static int retu_adc_average(struct n810bm *bm, unsigned int chan, ++ unsigned int nr_passes) ++{ ++ unsigned int i, value = 0; ++ int ret; ++ ++ if (WARN_ON(!nr_passes)) ++ return 0; ++ for (i = 0; i < nr_passes; i++) { ++ ret = retu_read_adc(&n810bm_retu_device->dev, chan); ++ if (ret < 0) ++ return ret; ++ value += ret; ++ } ++ value /= nr_passes; ++ ++ return value; ++} ++ ++static struct n810bm_adc_calib * n810bm_get_adc_calib(struct n810bm *bm, ++ enum n810bm_pmm_adc_id id) ++{ ++ unsigned int index = 0; ++ struct n810bm_adc_calib *cal; ++ ++ if (id != N810BM_PMM_ADC_0xFE) ++ index = (unsigned int)id + 1; ++ if (index >= ARRAY_SIZE(bm->calib.adc)) ++ return NULL; ++ ++ cal = &bm->calib.adc[index]; ++ WARN_ON(cal->id && cal->id != id); ++ ++ return cal; ++} ++ ++static int pmm_record_get(struct n810bm *bm, ++ const struct firmware *pmm_block, ++ void *buffer, size_t length, ++ unsigned int group, unsigned int element, unsigned int offset) ++{ ++ const u8 *pmm_area = pmm_block->data; ++ u8 active_group_mask; ++ ++ if (pmm_block->size != N810BM_PMM_BLOCK_SIZE) ++ return -EINVAL; ++ if (group >= N810BM_PMM_BLOCK_SIZE / N810BM_PMM_GROUP_SIZE) ++ return -EINVAL; ++ if (element >= N810BM_PMM_GROUP_SIZE / N810BM_PMM_ELEM_SIZE) ++ return -EINVAL; ++ if (offset >= N810BM_PMM_ELEM_SIZE || length > N810BM_PMM_ELEM_SIZE || ++ length + offset > N810BM_PMM_ELEM_SIZE) ++ return -EINVAL; ++ ++ active_group_mask = pmm_area[16]; ++ if (!(active_group_mask & (1 << group))) { ++ dev_dbg(&bm->pdev->dev, "pwm_record_get: Requested group %u, " ++ "but group is not active", group); ++ return -ENOENT; ++ } ++ ++ memcpy(buffer, ++ pmm_area + group * N810BM_PMM_GROUP_SIZE ++ + element * N810BM_PMM_ELEM_SIZE ++ + offset, ++ length); ++ ++ return 0; ++} ++ ++/* PMM block group 1 element */ ++struct group1_element { ++ u8 id; ++ u8 flags; ++ u8 adc_groupnr; ++ u8 _padding; ++ __le32 field1; ++ __le32 field2; ++} __packed; ++ ++static int extract_group1_elem(struct n810bm *bm, ++ const struct firmware *pmm_block, ++ const enum n810bm_pmm_adc_id *pmm_adc_ids, size_t nr_pmm_adc_ids, ++ u32 field1_mask, u32 field2_mask) ++{ ++ struct group1_element elem; ++ int err; ++ unsigned int i, element_nr; ++ struct n810bm_adc_calib *adc_calib; ++ ++ for (i = 0; i < nr_pmm_adc_ids; i++) { ++ element_nr = (unsigned int)(pmm_adc_ids[i]) + 3; ++ ++ err = pmm_record_get(bm, pmm_block, &elem, sizeof(elem), ++ 1, element_nr, 0); ++ if (err) ++ continue; ++ adc_calib = n810bm_get_adc_calib(bm, elem.id); ++ if (!adc_calib) { ++ dev_err(&bm->pdev->dev, "extract_group1_elem: " ++ "Could not get calib element for 0x%02X", ++ elem.id); ++ return -EINVAL; ++ } ++ ++ if (adc_calib->flags == elem.flags) { ++ adc_calib->field1 = le32_to_cpu(elem.field1) & field1_mask; ++ adc_calib->field2 = le32_to_cpu(elem.field2) & field2_mask; ++ } else { ++ dev_dbg(&bm->pdev->dev, "extract_group1_elem: " ++ "Not extracting fields due to flags mismatch: " ++ "0x%02X vs 0x%02X", ++ adc_calib->flags, elem.flags); ++ } ++ } ++ ++ return 0; ++} ++ ++static int n810bm_parse_pmm_group1(struct n810bm *bm, ++ const struct firmware *pmm_block) ++{ ++ struct n810bm_adc_calib *adc_calib; ++ struct group1_element elem; ++ int err; ++ ++ static const enum n810bm_pmm_adc_id pmm_adc_ids_1[] = { ++ N810BM_PMM_ADC_BATVOLT, ++ N810BM_PMM_ADC_CHGVOLT, ++ N810BM_PMM_ADC_BKUPVOLT, ++ N810BM_PMM_ADC_BATCURR, ++ }; ++ static const enum n810bm_pmm_adc_id pmm_adc_ids_2[] = { ++ N810BM_PMM_ADC_BSI, ++ }; ++ static const enum n810bm_pmm_adc_id pmm_adc_ids_3[] = { ++ N810BM_PMM_ADC_BATTEMP, ++ }; ++ ++ /* Parse element 2 */ ++ err = pmm_record_get(bm, pmm_block, &elem, sizeof(elem), ++ 1, 2, 0); ++ if (err) { ++ dev_err(&bm->pdev->dev, ++ "PMM: Failed to get group 1 / element 2"); ++ return err; ++ } ++ if (elem.id == N810BM_PMM_ADC_0xFE && elem.flags == 0x05) { ++ adc_calib = n810bm_get_adc_calib(bm, elem.id); ++ if (!adc_calib) { ++ dev_err(&bm->pdev->dev, ++ "calib extract: Failed to get 0xFE calib"); ++ return -EINVAL; ++ } ++ adc_calib->id = elem.id; ++ adc_calib->flags = elem.flags; ++ adc_calib->field1 = le32_to_cpu(elem.field1); ++ adc_calib->field2 = le32_to_cpu(elem.field2); ++ } ++ ++ err = extract_group1_elem(bm, pmm_block, ++ pmm_adc_ids_1, ARRAY_SIZE(pmm_adc_ids_1), ++ 0xFFFFFFFF, 0xFFFFFFFF); ++ if (err) ++ return err; ++ err = extract_group1_elem(bm, pmm_block, ++ pmm_adc_ids_2, ARRAY_SIZE(pmm_adc_ids_2), ++ 0xFFFFFFFF, 0); ++ if (err) ++ return err; ++ err = extract_group1_elem(bm, pmm_block, ++ pmm_adc_ids_3, ARRAY_SIZE(pmm_adc_ids_3), ++ 0xFFFFFFFF, 0x0000FFFF); ++ if (err) ++ return err; ++ ++ return 0; ++} ++ ++static int n810bm_parse_pmm_group2(struct n810bm *bm, ++ const struct firmware *pmm_block) ++{ ++ dev_err(&bm->pdev->dev, "TODO: CAL BME PMM group 2 parser not implemented, yet"); ++ return -EOPNOTSUPP; ++} ++ ++static void n810bm_adc_calib_set_defaults(struct n810bm *bm) ++{ ++ struct n810bm_adc_calib *adc_calib; ++ unsigned int i; ++ ++ static const struct n810bm_adc_calib defaults[] = { ++ /* ADC group-nr 0 */ ++ { ++ .id = N810BM_PMM_ADC_HEADSET, ++ .flags = 0x00, ++ .adc_groupnr = 0, ++ }, { ++ .id = N810BM_PMM_ADC_HOOKDET, ++ .flags = 0x00, ++ .adc_groupnr = 0, ++ }, { ++ .id = N810BM_PMM_ADC_RFGP, ++ .flags = 0x00, ++ .adc_groupnr = 0, ++ }, { ++ .id = N810BM_PMM_ADC_LIGHTSENS, ++ .flags = 0x00, ++ .adc_groupnr = 0, ++ }, { ++ .id = N810BM_PMM_ADC_WBTX, ++ .flags = 0x00, ++ .adc_groupnr = 0, ++ }, { ++ .id = N810BM_PMM_ADC_RETUTEMP, ++ .flags = 0x00, ++ .adc_groupnr = 0, ++ }, { ++ .id = N810BM_PMM_ADC_GND2, ++ .flags = 0x00, ++ .adc_groupnr = 0, ++ }, ++ /* ADC group-nr 1 */ ++ { ++ .id = N810BM_PMM_ADC_0xFE, ++ .flags = 0x05, ++ .adc_groupnr = 1, ++ .field1 = (u32)-2, ++ .field2 = 13189, ++ }, { ++ .id = N810BM_PMM_ADC_BATVOLT, ++ .flags = 0x01, ++ .adc_groupnr = 1, ++ .field1 = 2527, ++ .field2 = 21373, ++ }, { ++ .id = N810BM_PMM_ADC_CHGVOLT, ++ .flags = 0x01, ++ .adc_groupnr = 1, ++ .field1 = 0, ++ .field2 = 129848, ++ }, { ++ .id = N810BM_PMM_ADC_BKUPVOLT, ++ .flags = 0x01, ++ .adc_groupnr = 1, ++ .field1 = 0, ++ .field2 = 20000, ++ }, { ++ .id = N810BM_PMM_ADC_BATCURR, ++ .flags = 0x06, ++ .adc_groupnr = 1, ++ .field1 = 0, ++ .field2 = 9660, ++ }, ++ /* ADC group-nr 2 */ ++ { ++ .id = N810BM_PMM_ADC_BSI, ++ .flags = 0x02, ++ .adc_groupnr = 2, ++ .field1 = 1169, ++ .field2 = 0, ++ }, ++ /* ADC group-nr 3 */ ++ { ++ .id = N810BM_PMM_ADC_BATTEMP, ++ .flags = 0x03, ++ .adc_groupnr = 3, ++ .field1 = 265423000, ++ .field2 = 298, ++ }, ++ /* ADC group-nr 4 */ ++ { ++ .id = N810BM_PMM_ADC_LIGHTTEMP, ++ .flags = 0x04, ++ .adc_groupnr = 4, ++ .field1 = 19533778, ++ .field2 = 308019670, ++ .field3 = 4700, ++ .field4 = 2500, ++ }, ++ }; ++ ++ /* Clear the array */ ++ memset(&bm->calib.adc, 0, sizeof(bm->calib.adc)); ++ for (i = 0; i < ARRAY_SIZE(bm->calib.adc); i++) ++ bm->calib.adc[i].flags = 0xFF; ++ ++ /* Copy the defaults */ ++ for (i = 0; i < ARRAY_SIZE(defaults); i++) { ++ adc_calib = n810bm_get_adc_calib(bm, defaults[i].id); ++ if (WARN_ON(!adc_calib)) ++ continue; ++ *adc_calib = defaults[i]; ++ } ++} ++ ++static int n810bm_parse_pmm_block(struct n810bm *bm, ++ const struct firmware *pmm_block) ++{ ++ u8 byte; ++ int err; ++ unsigned int i, count; ++ struct n810bm_adc_calib *adc_calib; ++ ++ /* Initialize to defaults */ ++ n810bm_adc_calib_set_defaults(bm); ++ ++ /* Parse the PMM data */ ++ err = pmm_record_get(bm, pmm_block, &byte, sizeof(byte), ++ 1, 0, 0); /* group 1 / element 0 */ ++ err |= (byte != 0x01); ++ err |= pmm_record_get(bm, pmm_block, &byte, sizeof(byte), ++ 1, 1, 0); /* group 1 / element 1 */ ++ err |= (byte != 0x01); ++ if (err) ++ err = n810bm_parse_pmm_group2(bm, pmm_block); ++ else ++ err = n810bm_parse_pmm_group1(bm, pmm_block); ++ if (err) ++ return err; ++ ++ /* Sanity checks */ ++ for (i = 0, count = 0; i < ARRAY_SIZE(bm->calib.adc); i++) { ++ adc_calib = &bm->calib.adc[i]; ++ if (adc_calib->flags == 0xFF) ++ continue; ++ switch (adc_calib->id) { ++ case N810BM_PMM_ADC_BATVOLT: ++ if (adc_calib->field1 < 2400 || ++ adc_calib->field1 > 2700) ++ goto value_check_fail; ++ if (adc_calib->field2 < 20000 || ++ adc_calib->field2 > 23000) ++ goto value_check_fail; ++ count++; ++ break; ++ case N810BM_PMM_ADC_BSI: ++ if (adc_calib->field1 < 1100 || ++ adc_calib->field1 > 1300) ++ goto value_check_fail; ++ count++; ++ break; ++ case N810BM_PMM_ADC_BATCURR: ++ if (adc_calib->field2 < 7000 || ++ adc_calib->field2 > 12000) ++ goto value_check_fail; ++ count++; ++ break; ++ case N810BM_PMM_ADC_0xFE: ++ if ((s32)adc_calib->field1 > 14 || ++ (s32)adc_calib->field1 < -14) ++ goto value_check_fail; ++ if (adc_calib->field2 < 13000 || ++ adc_calib->field2 > 13350) ++ goto value_check_fail; ++ count++; ++ break; ++ case N810BM_PMM_ADC_CHGVOLT: ++ case N810BM_PMM_ADC_BATTEMP: ++ case N810BM_PMM_ADC_BKUPVOLT: ++ count++; ++ break; ++ case N810BM_PMM_ADC_GND2: ++ case N810BM_PMM_ADC_HOOKDET: ++ case N810BM_PMM_ADC_LIGHTSENS: ++ case N810BM_PMM_ADC_HEADSET: ++ case N810BM_PMM_ADC_LIGHTTEMP: ++ case N810BM_PMM_ADC_RFGP: ++ case N810BM_PMM_ADC_WBTX: ++ case N810BM_PMM_ADC_RETUTEMP: ++ break; ++ } ++ dev_dbg(&bm->pdev->dev, ++ "ADC 0x%02X calib: 0x%02X 0x%02X 0x%08X 0x%08X 0x%04X 0x%04X", ++ adc_calib->id, adc_calib->flags, adc_calib->adc_groupnr, ++ adc_calib->field1, adc_calib->field2, ++ adc_calib->field3, adc_calib->field4); ++ } ++ if (count != 7) { ++ dev_err(&bm->pdev->dev, "PMM sanity check: Did not find " ++ "all required values (count=%u)", count); ++ goto check_fail; ++ } ++ ++ return 0; ++ ++value_check_fail: ++ dev_err(&bm->pdev->dev, "PMM image sanity check failed " ++ "(id=%02X, field1=%08X, field2=%08X)", ++ adc_calib->id, adc_calib->field1, adc_calib->field2); ++check_fail: ++ return -EILSEQ; ++} ++ ++/* Set the current measure timer that triggers on Tahvo IRQ 7 ++ * An interval of zero disables the timer. */ ++static void n810bm_set_current_measure_timer(struct n810bm *bm, ++ u16 millisec_interval) ++{ ++ u16 value = millisec_interval; ++ ++ if (value <= 0xF905) { ++ value = ((u64)0x10624DD3 * (u64)(value + 0xF9)) >> 32; ++ value /= 16; ++ } else ++ value = 0xFF; ++ ++ tahvo_write(bm, TAHVO_REG_BATCURRTIMER, value & 0xFF); ++ ++ tahvo_set(bm, TAHVO_REG_CHGCTL, ++ TAHVO_REG_CHGCTL_CURTIMRST); ++ tahvo_clear(bm, TAHVO_REG_CHGCTL, ++ TAHVO_REG_CHGCTL_CURTIMRST); ++ ++ if (millisec_interval) ++ tahvo_enable_irq(TAHVO_INT_BATCURR); ++ else ++ tahvo_disable_irq(TAHVO_INT_BATCURR); ++ ++ //TODO also do a software timer for safety. ++} ++ ++static void n810bm_enable_current_measure(struct n810bm *bm) ++{ ++ WARN_ON(bm->current_measure_enabled < 0); ++ if (!bm->current_measure_enabled) { ++ /* Enable the current measurement circuitry */ ++ tahvo_set(bm, TAHVO_REG_CHGCTL, ++ TAHVO_REG_CHGCTL_CURMEAS); ++ dev_dbg(&bm->pdev->dev, ++ "Current measurement circuitry enabled"); ++ } ++ bm->current_measure_enabled++; ++} ++ ++static void n810bm_disable_current_measure(struct n810bm *bm) ++{ ++ bm->current_measure_enabled--; ++ WARN_ON(bm->current_measure_enabled < 0); ++ if (!bm->current_measure_enabled) { ++ /* Disable the current measurement circuitry */ ++ tahvo_clear(bm, TAHVO_REG_CHGCTL, ++ TAHVO_REG_CHGCTL_CURMEAS); ++ dev_dbg(&bm->pdev->dev, ++ "Current measurement circuitry disabled"); ++ } ++} ++ ++/* Measure the actual battery current. Returns a signed value in mA. ++ * Does only work, if current measurement was enabled. */ ++static int n810bm_measure_batt_current(struct n810bm *bm) ++{ ++ u16 retval; ++ int adc = 0, ma, i; ++ ++ if (WARN_ON(bm->current_measure_enabled <= 0)) ++ return 0; ++ for (i = 0; i < 3; i++) { ++ retval = tahvo_read(bm, TAHVO_REG_BATCURR); ++ adc += (s16)retval; /* Value is signed */ ++ } ++ adc /= 3; ++ ++ //TODO convert to mA ++ ma = adc; ++ ++ return ma; ++} ++ ++/* Requires bm->mutex locked */ ++static int n810bm_measure_batt_current_async(struct n810bm *bm) ++{ ++ int ma; ++ bool charging = lipocharge_is_charging(&bm->charger); ++ ++ n810bm_enable_current_measure(bm); ++ if (!charging) ++ WARN_ON(bm->active_current_pwm != 0); ++ tahvo_maskset(bm, TAHVO_REG_CHGCTL, ++ TAHVO_REG_CHGCTL_EN | ++ TAHVO_REG_CHGCTL_PWMOVR | ++ TAHVO_REG_CHGCTL_PWMOVRZERO, ++ TAHVO_REG_CHGCTL_EN | ++ TAHVO_REG_CHGCTL_PWMOVR | ++ (charging ? 0 : TAHVO_REG_CHGCTL_PWMOVRZERO)); ++ ma = n810bm_measure_batt_current(bm); ++ tahvo_maskset(bm, TAHVO_REG_CHGCTL, ++ TAHVO_REG_CHGCTL_EN | ++ TAHVO_REG_CHGCTL_PWMOVR | ++ TAHVO_REG_CHGCTL_PWMOVRZERO, ++ (charging ? TAHVO_REG_CHGCTL_EN : 0)); ++ n810bm_disable_current_measure(bm); ++ ++ return ma; ++} ++ ++static int adc_sanity_check(struct n810bm *bm, unsigned int channel) ++{ ++ int value; ++ ++ value = retu_read_adc(&n810bm_retu_device->dev, channel); ++ if (value < 0) { ++ dev_err(&bm->pdev->dev, "Failed to read GND ADC channel %u", ++ channel); ++ return -EIO; ++ } ++ dev_dbg(&bm->pdev->dev, ++ "GND ADC channel %u sanity check got value: %d", ++ channel, value); ++ if (value > 5) { ++ n810bm_emergency(bm, "GND ADC sanity check failed"); ++ return -EIO; ++ } ++ ++ return 0; ++} ++ ++static int n810bm_check_adc_sanity(struct n810bm *bm) ++{ ++ int err; ++ ++ /* Discard one conversion */ ++ retu_write(bm, RETU_REG_ADCSCR, 0); ++ retu_read_adc(&n810bm_retu_device->dev, RETU_ADC_GND2); ++ ++ err = adc_sanity_check(bm, RETU_ADC_GND2); ++ if (err) ++ return err; ++ ++ return 0; ++} ++ ++/* Measure the battery voltage. Returns the value in mV (or negative value on error). */ ++static int n810bm_measure_batt_voltage(struct n810bm *bm) ++{ ++ int adc; ++ unsigned int mv; ++ const unsigned int scale = 1000; ++ ++ adc = retu_adc_average(bm, RETU_ADC_BATTVOLT, 5); ++ if (adc < 0) ++ return adc; ++ if (adc <= 0x37) ++ return 2800; ++ mv = 2800 + ((adc - 0x37) * (((4200 - 2800) * scale) / (0x236 - 0x37))) / scale; ++ ++ //TODO compensate for power consumption ++ //TODO honor calibration values ++ ++ return mv; ++} ++ ++/* Measure the charger voltage. Returns the value in mV (or negative value on error). */ ++static int n810bm_measure_charger_voltage(struct n810bm *bm) ++{ ++ int adc; ++ unsigned int mv; ++ ++ adc = retu_adc_average(bm, RETU_ADC_CHGVOLT, 5); ++ if (adc < 0) ++ return adc; ++ //TODO convert to mV ++ mv = adc; ++ ++ return mv; ++} ++ ++/* Measure backup battery voltage. Returns the value in mV (or negative value on error). */ ++static int n810bm_measure_backup_batt_voltage(struct n810bm *bm) ++{ ++ int adc; ++ unsigned int mv; ++ ++ adc = retu_adc_average(bm, RETU_ADC_BKUPVOLT, 3); ++ if (adc < 0) ++ return adc; ++ //TODO convert to mV ++ mv = adc; ++ ++ return mv; ++} ++ ++/* Measure the battery temperature. Returns the value in K (or negative value on error). */ ++static int n810bm_measure_batt_temp(struct n810bm *bm) ++{ ++ int adc; ++ unsigned int k; ++ ++ adc = retu_adc_average(bm, RETU_ADC_BATTEMP, 3); ++ if (adc < 0) ++ return adc; ++ //TODO convert to K ++ k = adc; ++ ++ return k; ++} ++ ++/* Read the battery capacity via BSI pin. */ ++static enum n810bm_capacity n810bm_read_batt_capacity(struct n810bm *bm) ++{ ++ int adc; ++ const unsigned int hyst = 20; ++ ++ adc = retu_adc_average(bm, RETU_ADC_BSI, 5); ++ if (adc < 0) { ++ dev_err(&bm->pdev->dev, "Failed to read BSI ADC"); ++ return N810BM_CAP_UNKNOWN; ++ } ++ ++ if (adc >= 0x3B5 - hyst && adc <= 0x3B5 + hyst) ++ return N810BM_CAP_1500MAH; ++ ++ dev_err(&bm->pdev->dev, "Capacity indicator 0x%X unknown", adc); ++ ++ return N810BM_CAP_UNKNOWN; ++} ++ ++/* Convert a battery voltage (in mV) to percentage. */ ++static unsigned int n810bm_mvolt2percent(unsigned int mv) ++{ ++ const unsigned int minv = 3700; ++ const unsigned int maxv = 4150; ++ unsigned int percent; ++ ++ mv = clamp(mv, minv, maxv); ++ percent = (mv - minv) * 100 / (maxv - minv); ++ ++ return percent; ++} ++ ++static void n810bm_start_charge(struct n810bm *bm) ++{ ++ int err; ++ ++ WARN_ON(!bm->battery_present); ++ WARN_ON(!bm->charger_present); ++ ++ /* Set PWM to zero */ ++ bm->active_current_pwm = 0; ++ tahvo_write(bm, TAHVO_REG_CHGCURR, bm->active_current_pwm); ++ ++ /* Charge global enable */ ++ tahvo_maskset(bm, TAHVO_REG_CHGCTL, ++ TAHVO_REG_CHGCTL_EN | ++ TAHVO_REG_CHGCTL_PWMOVR | ++ TAHVO_REG_CHGCTL_PWMOVRZERO, ++ TAHVO_REG_CHGCTL_EN); ++ ++ WARN_ON((int)bm->capacity <= 0); ++ bm->charger.capacity = bm->capacity; ++ err = lipocharge_start(&bm->charger); ++ WARN_ON(err); ++ ++ /* Initialize current measurement circuitry */ ++ n810bm_enable_current_measure(bm); ++ n810bm_set_current_measure_timer(bm, 250); ++ ++ dev_info(&bm->pdev->dev, "Charging battery"); ++ n810bm_notify_charger_pwm(bm); ++ n810bm_notify_battery_charging(bm); ++} ++ ++static void n810bm_stop_charge(struct n810bm *bm) ++{ ++ if (lipocharge_is_charging(&bm->charger)) { ++ n810bm_set_current_measure_timer(bm, 0); ++ n810bm_disable_current_measure(bm); ++ } ++ lipocharge_stop(&bm->charger); ++ ++ /* Set PWM to zero */ ++ bm->active_current_pwm = 0; ++ tahvo_write(bm, TAHVO_REG_CHGCURR, bm->active_current_pwm); ++ ++ /* Charge global disable */ ++ tahvo_maskset(bm, TAHVO_REG_CHGCTL, ++ TAHVO_REG_CHGCTL_EN | ++ TAHVO_REG_CHGCTL_PWMOVR | ++ TAHVO_REG_CHGCTL_PWMOVRZERO, ++ 0); ++ ++ dev_info(&bm->pdev->dev, "Not charging battery"); ++ n810bm_notify_charger_pwm(bm); ++ n810bm_notify_battery_charging(bm); ++} ++ ++/* Periodic check */ ++static void n810bm_periodic_check_work(struct work_struct *work) ++{ ++ struct n810bm *bm = container_of(to_delayed_work(work), ++ struct n810bm, periodic_check_work); ++ u16 status; ++ bool battery_was_present, charger_was_present; ++ int mv; ++ ++ mutex_lock(&bm->mutex); ++ ++ status = retu_read(bm, RETU_REG_STATUS); ++ battery_was_present = bm->battery_present; ++ charger_was_present = bm->charger_present; ++ bm->battery_present = !!(status & RETU_REG_STATUS_BATAVAIL); ++ bm->charger_present = !!(status & RETU_REG_STATUS_CHGPLUG); ++ ++ if (bm->battery_present != battery_was_present) { ++ /* Battery state changed */ ++ if (bm->battery_present) { ++ bm->capacity = n810bm_read_batt_capacity(bm); ++ if (bm->capacity == N810BM_CAP_UNKNOWN) { ++ dev_err(&bm->pdev->dev, "Unknown battery detected"); ++ } else { ++ dev_info(&bm->pdev->dev, "Detected %u mAh battery", ++ (unsigned int)bm->capacity); ++ } ++ } else { ++ bm->capacity = N810BM_CAP_NONE; ++ dev_info(&bm->pdev->dev, "The main battery was removed"); ++ //TODO disable charging ++ } ++ } ++ ++ if (bm->charger_present != charger_was_present) { ++ /* Charger state changed */ ++ dev_info(&bm->pdev->dev, "The charger was %s", ++ bm->charger_present ? "plugged in" : "removed"); ++ } ++ ++ if ((bm->battery_present && !bm->charger_present) || ++ !n810bm_known_battery_present(bm)){ ++ /* We're draining the battery */ ++ mv = n810bm_measure_batt_voltage(bm); ++ if (mv < 0) { ++ n810bm_emergency(bm, ++ "check: Failed to measure voltage"); ++ } ++ if (mv < N810BM_MIN_VOLTAGE_THRES) { ++ n810bm_emergency(bm, ++ "check: Minimum voltage threshold reached"); ++ } ++ } ++ ++ if (bm->charger_present && n810bm_known_battery_present(bm)) { ++ /* Known battery and charger are connected */ ++ if (bm->charger_enabled) { ++ /* Charger is enabled */ ++ if (!lipocharge_is_charging(&bm->charger)) { ++ //TODO start charging, if battery is below some threshold ++ n810bm_start_charge(bm); ++ } ++ } ++ } ++ ++ if (lipocharge_is_charging(&bm->charger) && !bm->charger_present) { ++ /* Charger was unplugged. */ ++ n810bm_stop_charge(bm); ++ } ++ ++ mutex_unlock(&bm->mutex); ++ schedule_delayed_work(&bm->periodic_check_work, ++ round_jiffies_relative(N810BM_CHECK_INTERVAL)); ++} ++ ++/*XXX ++static void n810bm_adc_irq_handler(unsigned long data) ++{ ++ struct n810bm *bm = (struct n810bm *)data; ++ ++ retu_ack_irq(RETU_INT_ADCS); ++ //TODO ++dev_info(&bm->pdev->dev, "ADC interrupt triggered\n"); ++} ++*/ ++ ++static void n810bm_tahvo_current_measure_work(struct work_struct *work) ++{ ++ struct n810bm *bm = container_of(work, struct n810bm, currmeas_irq_work); ++ int res, ma, mv, temp; ++ ++ mutex_lock(&bm->mutex); ++ if (!lipocharge_is_charging(&bm->charger)) ++ goto out_unlock; ++ ++ tahvo_maskset(bm, TAHVO_REG_CHGCTL, ++ TAHVO_REG_CHGCTL_PWMOVR | ++ TAHVO_REG_CHGCTL_PWMOVRZERO, ++ TAHVO_REG_CHGCTL_PWMOVR); ++ ma = n810bm_measure_batt_current(bm); ++ tahvo_maskset(bm, TAHVO_REG_CHGCTL, ++ TAHVO_REG_CHGCTL_PWMOVR | ++ TAHVO_REG_CHGCTL_PWMOVRZERO, ++ TAHVO_REG_CHGCTL_PWMOVR | ++ TAHVO_REG_CHGCTL_PWMOVRZERO); ++ msleep(10); ++ mv = n810bm_measure_batt_voltage(bm); ++ tahvo_maskset(bm, TAHVO_REG_CHGCTL, ++ TAHVO_REG_CHGCTL_PWMOVR | ++ TAHVO_REG_CHGCTL_PWMOVRZERO, ++ 0); ++ temp = n810bm_measure_batt_temp(bm); ++ if (WARN_ON(mv < 0)) ++ goto out_unlock; ++ if (WARN_ON(temp < 0)) ++ goto out_unlock; ++ ++ if (bm->verbose_charge_log) { ++ dev_info(&bm->pdev->dev, ++ "Battery charge state: %d mV, %d mA (%s)", ++ mv, ma, ++ (ma <= 0) ? "discharging" : "charging"); ++ } ++ res = lipocharge_update_state(&bm->charger, mv, ma, temp); ++ if (res) { ++ if (res > 0) ++ dev_info(&bm->pdev->dev, "Battery fully charged"); ++ n810bm_stop_charge(bm); ++ } ++out_unlock: ++ mutex_unlock(&bm->mutex); ++} ++ ++static void n810bm_tahvo_current_measure_irq_handler(unsigned long data) ++{ ++ struct n810bm *bm = (struct n810bm *)data; ++ ++ tahvo_ack_irq(TAHVO_INT_BATCURR); ++ schedule_work(&bm->currmeas_irq_work); ++} ++ ++#define DEFINE_ATTR_NOTIFY(attr_name) \ ++ void n810bm_notify_##attr_name(struct n810bm *bm) \ ++ { \ ++ set_bit(N810BM_NOTIFY_##attr_name, &bm->notify_flags); \ ++ wmb(); \ ++ schedule_work(&bm->notify_work); \ ++ } ++ ++#define DEFINE_SHOW_INT_FUNC(name, member) \ ++ static ssize_t n810bm_attr_##name##_show(struct device *dev, \ ++ struct device_attribute *attr, \ ++ char *buf) \ ++ { \ ++ struct n810bm *bm = device_to_n810bm(dev); \ ++ ssize_t count; \ ++ \ ++ mutex_lock(&bm->mutex); \ ++ count = snprintf(buf, PAGE_SIZE, "%d\n", (int)(bm->member)); \ ++ mutex_unlock(&bm->mutex); \ ++ \ ++ return count; \ ++ } ++ ++#define DEFINE_STORE_INT_FUNC(name, member) \ ++ static ssize_t n810bm_attr_##name##_store(struct device *dev, \ ++ struct device_attribute *attr,\ ++ const char *buf, size_t count)\ ++ { \ ++ struct n810bm *bm = device_to_n810bm(dev); \ ++ long val; \ ++ int err; \ ++ \ ++ mutex_lock(&bm->mutex); \ ++ err = strict_strtol(buf, 0, &val); \ ++ if (!err) \ ++ bm->member = (typeof(bm->member))val; \ ++ mutex_unlock(&bm->mutex); \ ++ \ ++ return err ? err : count; \ ++ } ++ ++#define DEFINE_ATTR_SHOW_INT(name, member) \ ++ DEFINE_SHOW_INT_FUNC(name, member) \ ++ static DEVICE_ATTR(name, S_IRUGO, \ ++ n810bm_attr_##name##_show, NULL); ++ ++#define DEFINE_ATTR_SHOW_STORE_INT(name, member) \ ++ DEFINE_SHOW_INT_FUNC(name, member) \ ++ DEFINE_STORE_INT_FUNC(name, member) \ ++ static DEVICE_ATTR(name, S_IRUGO | S_IWUSR, \ ++ n810bm_attr_##name##_show, \ ++ n810bm_attr_##name##_store); ++ ++DEFINE_ATTR_SHOW_INT(battery_present, battery_present); ++DEFINE_ATTR_SHOW_INT(charger_present, charger_present); ++DEFINE_ATTR_SHOW_INT(charger_pwm, active_current_pwm); ++static DEFINE_ATTR_NOTIFY(charger_pwm); ++DEFINE_ATTR_SHOW_STORE_INT(charger_enable, charger_enabled); ++DEFINE_ATTR_SHOW_STORE_INT(charger_verbose, verbose_charge_log); ++ ++static ssize_t n810bm_attr_battery_charging(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct n810bm *bm = device_to_n810bm(dev); ++ ssize_t count; ++ ++ mutex_lock(&bm->mutex); ++ count = snprintf(buf, PAGE_SIZE, "%d\n", ++ (int)lipocharge_is_charging(&bm->charger)); ++ mutex_unlock(&bm->mutex); ++ ++ return count; ++} ++static DEVICE_ATTR(battery_charging, S_IRUGO, ++ n810bm_attr_battery_charging, NULL); ++static DEFINE_ATTR_NOTIFY(battery_charging); ++ ++static ssize_t n810bm_attr_battery_level_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct n810bm *bm = device_to_n810bm(dev); ++ ssize_t count = -ENODEV; ++ int millivolt; ++ ++ mutex_lock(&bm->mutex); ++ if (!bm->battery_present || lipocharge_is_charging(&bm->charger)) ++ millivolt = 0; ++ else ++ millivolt = n810bm_measure_batt_voltage(bm); ++ if (millivolt >= 0) { ++ count = snprintf(buf, PAGE_SIZE, "%u\n", ++ n810bm_mvolt2percent(millivolt)); ++ } ++ mutex_unlock(&bm->mutex); ++ ++ return count; ++} ++static DEVICE_ATTR(battery_level, S_IRUGO, ++ n810bm_attr_battery_level_show, NULL); ++ ++static ssize_t n810bm_attr_battery_capacity_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct n810bm *bm = device_to_n810bm(dev); ++ ssize_t count; ++ int capacity = 0; ++ ++ mutex_lock(&bm->mutex); ++ if (n810bm_known_battery_present(bm)) ++ capacity = (int)bm->capacity; ++ count = snprintf(buf, PAGE_SIZE, "%d\n", capacity); ++ mutex_unlock(&bm->mutex); ++ ++ return count; ++} ++static DEVICE_ATTR(battery_capacity, S_IRUGO, ++ n810bm_attr_battery_capacity_show, NULL); ++ ++static ssize_t n810bm_attr_battery_temp_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct n810bm *bm = device_to_n810bm(dev); ++ ssize_t count = -ENODEV; ++ int k; ++ ++ mutex_lock(&bm->mutex); ++ k = n810bm_measure_batt_temp(bm); ++ if (k >= 0) ++ count = snprintf(buf, PAGE_SIZE, "%d\n", k); ++ mutex_unlock(&bm->mutex); ++ ++ return count; ++} ++static DEVICE_ATTR(battery_temp, S_IRUGO, ++ n810bm_attr_battery_temp_show, NULL); ++ ++static ssize_t n810bm_attr_charger_voltage_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct n810bm *bm = device_to_n810bm(dev); ++ ssize_t count = -ENODEV; ++ int mv = 0; ++ ++ mutex_lock(&bm->mutex); ++ if (bm->charger_present) ++ mv = n810bm_measure_charger_voltage(bm); ++ if (mv >= 0) ++ count = snprintf(buf, PAGE_SIZE, "%d\n", mv); ++ mutex_unlock(&bm->mutex); ++ ++ return count; ++} ++static DEVICE_ATTR(charger_voltage, S_IRUGO, ++ n810bm_attr_charger_voltage_show, NULL); ++ ++static ssize_t n810bm_attr_backup_battery_voltage_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct n810bm *bm = device_to_n810bm(dev); ++ ssize_t count = -ENODEV; ++ int mv; ++ ++ mutex_lock(&bm->mutex); ++ mv = n810bm_measure_backup_batt_voltage(bm); ++ if (mv >= 0) ++ count = snprintf(buf, PAGE_SIZE, "%d\n", mv); ++ mutex_unlock(&bm->mutex); ++ ++ return count; ++} ++static DEVICE_ATTR(backup_battery_voltage, S_IRUGO, ++ n810bm_attr_backup_battery_voltage_show, NULL); ++ ++static ssize_t n810bm_attr_battery_current_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct n810bm *bm = device_to_n810bm(dev); ++ ssize_t count = -ENODEV; ++ int ma = 0; ++ ++ mutex_lock(&bm->mutex); ++ if (bm->battery_present) ++ ma = n810bm_measure_batt_current_async(bm); ++ count = snprintf(buf, PAGE_SIZE, "%d\n", ma); ++ mutex_unlock(&bm->mutex); ++ ++ return count; ++} ++static DEVICE_ATTR(battery_current, S_IRUGO, ++ n810bm_attr_battery_current_show, NULL); ++ ++static const struct device_attribute *n810bm_attrs[] = { ++ &dev_attr_battery_present, ++ &dev_attr_battery_level, ++ &dev_attr_battery_charging, ++ &dev_attr_battery_current, ++ &dev_attr_battery_capacity, ++ &dev_attr_battery_temp, ++ &dev_attr_backup_battery_voltage, ++ &dev_attr_charger_present, ++ &dev_attr_charger_verbose, ++ &dev_attr_charger_voltage, ++ &dev_attr_charger_enable, ++ &dev_attr_charger_pwm, ++}; ++ ++static void n810bm_notify_work(struct work_struct *work) ++{ ++ struct n810bm *bm = container_of(work, struct n810bm, notify_work); ++ unsigned long notify_flags; ++ ++ notify_flags = xchg(&bm->notify_flags, 0); ++ mb(); ++ ++#define do_notify(attr_name) \ ++ do { \ ++ if (notify_flags & (1 << N810BM_NOTIFY_##attr_name)) { \ ++ sysfs_notify(&bm->pdev->dev.kobj, NULL, \ ++ dev_attr_##attr_name.attr.name); \ ++ } \ ++ } while (0) ++ ++ do_notify(battery_charging); ++ do_notify(charger_pwm); ++} ++ ++static int n810bm_charger_set_current_pwm(struct lipocharge *c, ++ unsigned int duty_cycle) ++{ ++ struct n810bm *bm = container_of(c, struct n810bm, charger); ++ int err = -EINVAL; ++ ++ WARN_ON(!mutex_is_locked(&bm->mutex)); ++ if (WARN_ON(duty_cycle > 0xFF)) ++ goto out; ++ if (WARN_ON(!bm->charger_enabled)) ++ goto out; ++ if (WARN_ON(!bm->battery_present || !bm->charger_present)) ++ goto out; ++ ++ if (duty_cycle != bm->active_current_pwm) { ++ bm->active_current_pwm = duty_cycle; ++ tahvo_write(bm, TAHVO_REG_CHGCURR, duty_cycle); ++ n810bm_notify_charger_pwm(bm); ++ } ++ ++ err = 0; ++out: ++ ++ return err; ++} ++ ++static void n810bm_charger_emergency(struct lipocharge *c) ++{ ++ struct n810bm *bm = container_of(c, struct n810bm, charger); ++ ++ n810bm_emergency(bm, "Battery charger fault"); ++} ++ ++static void n810bm_hw_exit(struct n810bm *bm) ++{ ++ n810bm_stop_charge(bm); ++ retu_write(bm, RETU_REG_ADCSCR, 0); ++} ++ ++static int n810bm_hw_init(struct n810bm *bm) ++{ ++ int err; ++ ++ err = n810bm_check_adc_sanity(bm); ++ if (err) ++ return err; ++ ++ n810bm_stop_charge(bm); ++ ++ return 0; ++} ++ ++static void n810bm_cancel_and_flush_work(struct n810bm *bm) ++{ ++ cancel_delayed_work_sync(&bm->periodic_check_work); ++ cancel_work_sync(&bm->notify_work); ++ cancel_work_sync(&bm->currmeas_irq_work); ++ flush_scheduled_work(); ++} ++ ++static int n810bm_device_init(struct n810bm *bm) ++{ ++ int attr_index; ++ int err; ++ ++ bm->charger.rate = LIPORATE_p6C; ++ bm->charger.top_voltage = 4100; ++ bm->charger.duty_cycle_max = 0xFF; ++ bm->charger.set_current_pwm = n810bm_charger_set_current_pwm; ++ bm->charger.emergency = n810bm_charger_emergency; ++ lipocharge_init(&bm->charger, &bm->pdev->dev); ++ ++ err = n810bm_hw_init(bm); ++ if (err) ++ goto error; ++ for (attr_index = 0; attr_index < ARRAY_SIZE(n810bm_attrs); attr_index++) { ++ err = device_create_file(&bm->pdev->dev, n810bm_attrs[attr_index]); ++ if (err) ++ goto err_unwind_attrs; ++ } ++/*XXX ++ err = retu_request_irq(RETU_INT_ADCS, ++ n810bm_adc_irq_handler, ++ (unsigned long)bm, "n810bm"); ++ if (err) ++ goto err_unwind_attrs; ++*/ ++ err = tahvo_request_irq(TAHVO_INT_BATCURR, ++ n810bm_tahvo_current_measure_irq_handler, ++ (unsigned long)bm, "n810bm"); ++ if (err) ++ goto err_free_retu_irq; ++ tahvo_disable_irq(TAHVO_INT_BATCURR); ++ ++ schedule_delayed_work(&bm->periodic_check_work, ++ round_jiffies_relative(N810BM_CHECK_INTERVAL)); ++ ++ bm->initialized = 1; ++ dev_info(&bm->pdev->dev, "Battery management initialized"); ++ ++ return 0; ++ ++err_free_retu_irq: ++//XXX retu_free_irq(RETU_INT_ADCS); ++err_unwind_attrs: ++ for (attr_index--; attr_index >= 0; attr_index--) ++ device_remove_file(&bm->pdev->dev, n810bm_attrs[attr_index]); ++/*err_exit:*/ ++ n810bm_hw_exit(bm); ++error: ++ n810bm_cancel_and_flush_work(bm); ++ ++ return err; ++} ++ ++static void n810bm_device_exit(struct n810bm *bm) ++{ ++ int i; ++ ++ if (!bm->initialized) ++ return; ++ ++ lipocharge_exit(&bm->charger); ++ tahvo_free_irq(TAHVO_INT_BATCURR); ++//XXX retu_free_irq(RETU_INT_ADCS); ++ for (i = 0; i < ARRAY_SIZE(n810bm_attrs); i++) ++ device_remove_file(&bm->pdev->dev, n810bm_attrs[i]); ++ ++ n810bm_cancel_and_flush_work(bm); ++ ++ n810bm_hw_exit(bm); ++ ++ bm->initialized = 0; ++} ++ ++static void n810bm_pmm_block_found(const struct firmware *fw, void *context) ++{ ++ struct n810bm *bm = context; ++ int err; ++ ++ if (!fw) { ++ dev_err(&bm->pdev->dev, ++ "CAL PMM block image file not found"); ++ goto err_release; ++ } ++ if (fw->size != N810BM_PMM_BLOCK_SIZE || ++ memcmp(fw->data, "BME-PMM-BLOCK01", 15) != 0) { ++ dev_err(&bm->pdev->dev, ++ "CAL PMM block image file has an invalid format"); ++ goto err_release; ++ } ++ ++ err = n810bm_parse_pmm_block(bm, fw); ++ if (err) ++ goto err_release; ++ release_firmware(fw); ++ ++ err = n810bm_device_init(bm); ++ if (err) { ++ dev_err(&bm->pdev->dev, ++ "Failed to initialized battery management (%d)", err); ++ goto error; ++ } ++ ++ return; ++err_release: ++ release_firmware(fw); ++error: ++ return; ++} ++ ++static int __devinit n810bm_probe(void) ++{ ++ struct n810bm *bm; ++ int err; ++ ++ if (!n810bm_retu_device || !n810bm_tahvo_device) ++ return 0; ++ ++ bm = kzalloc(sizeof(*bm), GFP_KERNEL); ++ if (!bm) ++ return -ENOMEM; ++ bm->pdev = n810bm_retu_device; ++ platform_set_drvdata(n810bm_retu_device, bm); ++ platform_set_drvdata(n810bm_tahvo_device, bm); ++ mutex_init(&bm->mutex); ++ INIT_DELAYED_WORK(&bm->periodic_check_work, n810bm_periodic_check_work); ++ INIT_WORK(&bm->notify_work, n810bm_notify_work); ++ INIT_WORK(&bm->currmeas_irq_work, n810bm_tahvo_current_measure_work); ++ ++ dev_info(&bm->pdev->dev, "Requesting CAL BME PMM block firmware file " ++ N810BM_PMM_BLOCK_FILENAME); ++ err = request_firmware_nowait(THIS_MODULE, 1, ++ N810BM_PMM_BLOCK_FILENAME, ++ &bm->pdev->dev, GFP_KERNEL, ++ bm, n810bm_pmm_block_found); ++ if (err) { ++ dev_err(&bm->pdev->dev, ++ "Failed to request CAL PMM block image file (%d)", err); ++ goto err_free; ++ } ++ ++ return 0; ++ ++err_free: ++ kfree(bm); ++ ++ return err; ++} ++ ++static void __devexit n810bm_remove(void) ++{ ++ struct n810bm *bm; ++ ++ if (!n810bm_retu_device || !n810bm_tahvo_device) ++ return; ++ bm = platform_get_drvdata(n810bm_retu_device); ++ ++ n810bm_device_exit(bm); ++ ++ kfree(bm); ++ platform_set_drvdata(n810bm_retu_device, NULL); ++ platform_set_drvdata(n810bm_tahvo_device, NULL); ++} ++ ++static int __devinit n810bm_retu_probe(struct platform_device *pdev) ++{ ++ n810bm_retu_device = pdev; ++ return n810bm_probe(); ++} ++ ++static int __devexit n810bm_retu_remove(struct platform_device *pdev) ++{ ++ n810bm_remove(); ++ n810bm_retu_device = NULL; ++ return 0; ++} ++ ++static int __devinit n810bm_tahvo_probe(struct platform_device *pdev) ++{ ++ n810bm_tahvo_device = pdev; ++ return n810bm_probe(); ++} ++ ++static int __devexit n810bm_tahvo_remove(struct platform_device *pdev) ++{ ++ n810bm_remove(); ++ n810bm_tahvo_device = NULL; ++ return 0; ++} ++ ++static struct platform_driver n810bm_retu_driver = { ++ .remove = __devexit_p(n810bm_retu_remove), ++ .driver = { ++ .name = "retu-n810bm", ++ } ++}; ++ ++static struct platform_driver n810bm_tahvo_driver = { ++ .remove = __devexit_p(n810bm_tahvo_remove), ++ .driver = { ++ .name = "tahvo-n810bm", ++ } ++}; ++ ++/* FIXME: for now alloc the device here... */ ++static struct platform_device n810bm_tahvo_dev = { ++ .name = "tahvo-n810bm", ++ .id = -1, ++}; ++ ++static int __init n810bm_modinit(void) ++{ ++ int err; ++ ++ //FIXME ++ err = platform_device_register(&n810bm_tahvo_dev); ++ if (err) ++ return err; ++ ++ err = platform_driver_probe(&n810bm_retu_driver, n810bm_retu_probe); ++ if (err) ++ return err; ++ err = platform_driver_probe(&n810bm_tahvo_driver, n810bm_tahvo_probe); ++ if (err) { ++ platform_driver_unregister(&n810bm_retu_driver); ++ return err; ++ } ++ ++ return 0; ++} ++module_init(n810bm_modinit); ++ ++static void __exit n810bm_modexit(void) ++{ ++ //FIXME ++ platform_device_unregister(&n810bm_tahvo_dev); ++ ++ platform_driver_unregister(&n810bm_tahvo_driver); ++ platform_driver_unregister(&n810bm_retu_driver); ++} ++module_exit(n810bm_modexit); ++ ++MODULE_DESCRIPTION("Nokia n810 battery management"); ++MODULE_FIRMWARE(N810BM_PMM_BLOCK_FILENAME); ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Michael Buesch"); +Index: linux-2.6.38-rc6/drivers/cbus/lipocharge.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/lipocharge.c 2011-02-26 23:25:39.889753477 +0100 +@@ -0,0 +1,183 @@ ++/* ++ * Generic LIPO battery charger ++ * ++ * Copyright (c) 2010-2011 Michael Buesch <mb@bu3sch.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version 2 ++ * of the License, or (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#define DEBUG ++ ++#include "lipocharge.h" ++ ++#include <linux/slab.h> ++ ++ ++/* Hysteresis constants */ ++#define CURRENT_HYST 30 /* mA */ ++#define VOLTAGE_HYST 10 /* mV */ ++ ++/* Threshold constants */ ++#define FINISH_CURRENT_PERCENT 3 ++ ++ ++/* Returns the requested first-stage charge current in mA */ ++static inline unsigned int get_stage1_charge_current(struct lipocharge *c) ++{ ++ /* current = (capacity * C) */ ++ return c->capacity * c->rate / 1000; ++} ++ ++void lipocharge_init(struct lipocharge *c, struct device *dev) ++{ ++ c->dev = dev; ++ c->state = LIPO_IDLE; ++} ++ ++void lipocharge_exit(struct lipocharge *c) ++{ ++ c->state = LIPO_IDLE; ++} ++ ++int lipocharge_start(struct lipocharge *c) ++{ ++ int err; ++ ++ if (c->state != LIPO_IDLE) ++ return -EBUSY; ++ if (!c->set_current_pwm || !c->emergency) ++ return -EINVAL; ++ if (!c->top_voltage || c->top_voltage > 4200) ++ return -EINVAL; ++ ++ c->active_duty_cycle = 0; ++ err = c->set_current_pwm(c, c->active_duty_cycle); ++ if (err) ++ return err; ++ c->state = LIPO_FIRST_STAGE; ++ ++ return 0; ++} ++ ++void lipocharge_stop(struct lipocharge *c) ++{ ++ if (c->state == LIPO_IDLE) ++ return; ++ c->state = LIPO_IDLE; ++} ++ ++static int lipocharge_increase_current(struct lipocharge *c, ++ unsigned int inc_permille) ++{ ++ int old_pwm, new_pwm; ++ ++ if (c->active_duty_cycle >= c->duty_cycle_max) ++ return 0; ++ ++ old_pwm = c->active_duty_cycle; ++ new_pwm = old_pwm + (c->duty_cycle_max * inc_permille / 1000); ++ new_pwm = min(new_pwm, (int)c->duty_cycle_max); ++ c->active_duty_cycle = new_pwm; ++ ++ dev_dbg(c->dev, "lipo: Increasing duty_cycle by " ++ "%u permille (0x%02X -> 0x%02X)", ++ inc_permille, old_pwm, new_pwm); ++ ++ return c->set_current_pwm(c, c->active_duty_cycle); ++} ++ ++static int lipocharge_decrease_current(struct lipocharge *c, ++ unsigned int dec_permille) ++{ ++ int old_pwm, new_pwm; ++ ++ if (c->active_duty_cycle <= 0) ++ return 0; ++ ++ old_pwm = c->active_duty_cycle; ++ new_pwm = old_pwm - (c->duty_cycle_max * dec_permille / 1000); ++ new_pwm = max(0, new_pwm); ++ c->active_duty_cycle = new_pwm; ++ ++ dev_dbg(c->dev, "lipo: Decreasing duty_cycle by " ++ "%u permille (0x%02X -> 0x%02X)", ++ dec_permille, old_pwm, new_pwm); ++ ++ return c->set_current_pwm(c, c->active_duty_cycle); ++} ++ ++/** lipocharge_update_state - Update the charge state ++ * @c: The context. ++ * @voltage_mV: The measured battery voltage. ++ * @current_mA: The measured charge current. ++ * negative -> drain. ++ * positive -> charge. ++ * @temp_K: Battery temperature in K. ++ * ++ * Returns 0 on success, -1 on error. ++ * Returns 1, if the charging process is finished. ++ */ ++int lipocharge_update_state(struct lipocharge *c, ++ unsigned int voltage_mV, ++ int current_mA, ++ unsigned int temp_K) ++{ ++ int requested_current, current_diff; ++ int err; ++ unsigned int permille; ++ ++ //TODO temp ++ ++restart: ++ switch (c->state) { ++ case LIPO_IDLE: ++ dev_err(c->dev, "%s: called while idle", __func__); ++ return -EINVAL; ++ case LIPO_FIRST_STAGE: /* Constant current */ ++//printk("GOT %u %d %u\n", voltage_mV, current_mA, temp_K); ++ if (voltage_mV >= c->top_voltage) { ++ /* Float voltage reached. ++ * Switch charger mode to "constant current" */ ++ c->state = LIPO_SECOND_STAGE; ++ dev_dbg(c->dev, "Switched to second charging stage."); ++ goto restart; ++ } ++ /* Float voltage not reached, yet. ++ * Try to get the requested constant current. */ ++ requested_current = get_stage1_charge_current(c); ++ if (current_mA < 0) ++ current_mA = 0; ++ current_diff = requested_current - current_mA; ++ if (abs(requested_current - current_mA) > CURRENT_HYST) { ++ if (current_diff > 0) { ++ /* Increase current */ ++ permille = current_diff * 1000 / requested_current; ++ permille /= 2; ++ err = lipocharge_increase_current(c, permille); ++ if (err) ++ return err; ++ } else { ++ /* Decrease current */ ++ permille = (-current_diff) * 1000 / requested_current; ++ permille /= 2; ++ err = lipocharge_decrease_current(c, permille); ++ if (err) ++ return err; ++ } ++ } ++ break; ++ case LIPO_SECOND_STAGE: /* Constant voltage */ ++ //TODO ++ break; ++ } ++ ++ return 0; ++} +Index: linux-2.6.38-rc6/drivers/cbus/lipocharge.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.38-rc6/drivers/cbus/lipocharge.h 2011-02-26 23:25:39.890753496 +0100 +@@ -0,0 +1,60 @@ ++#ifndef LIPOCHARGE_H_ ++#define LIPOCHARGE_H_ ++ ++#include <linux/types.h> ++#include <linux/device.h> ++ ++ ++#define LIPORATE(a,b) (((a) * 1000) + ((b) * 100)) ++#define LIPORATE_p6C LIPORATE(0,6) /* 0.6C */ ++ ++enum lipocharge_state { ++ LIPO_IDLE, /* Not charging */ ++ LIPO_FIRST_STAGE, /* Charging: constant current */ ++ LIPO_SECOND_STAGE, /* Charging: constant voltage */ ++}; ++ ++/** struct lipocharge - A generic LIPO charger ++ * ++ * @capacity: Battery capacity in mAh. ++ * @rate: Charge rate. ++ * @top_voltage: Fully charged voltage, in mV. ++ * @duty_cycle_max: Max value for duty_cycle. ++ * ++ * @set_charge_current: Set the charge current PWM duty cycle. ++ * @emergency: Something went wrong. Force shutdown. ++ */ ++struct lipocharge { ++ unsigned int capacity; ++ unsigned int rate; ++ unsigned int top_voltage; ++ unsigned int duty_cycle_max; ++ ++ int (*set_current_pwm)(struct lipocharge *c, unsigned int duty_cycle); ++ void (*emergency)(struct lipocharge *c); ++ ++ /* internal */ ++ struct device *dev; ++ enum lipocharge_state state; ++ unsigned int active_duty_cycle; ++ ++ //TODO implement timer to cut power after maximum charge time. ++}; ++ ++void lipocharge_init(struct lipocharge *c, struct device *dev); ++void lipocharge_exit(struct lipocharge *c); ++ ++int lipocharge_start(struct lipocharge *c); ++void lipocharge_stop(struct lipocharge *c); ++ ++int lipocharge_update_state(struct lipocharge *c, ++ unsigned int voltage_mV, ++ int current_mA, ++ unsigned int temp_K); ++ ++static inline bool lipocharge_is_charging(struct lipocharge *c) ++{ ++ return (c->state != LIPO_IDLE); ++} ++ ++#endif /* LIPOCHARGE_H_ */ +Index: linux-2.6.38-rc6/drivers/cbus/cbus.c +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/cbus/cbus.c 2011-02-26 23:22:54.992733511 +0100 ++++ linux-2.6.38-rc6/drivers/cbus/cbus.c 2011-02-26 23:25:39.890753496 +0100 +@@ -35,6 +35,7 @@ + #include <linux/platform_device.h> + + #include <plat/cbus.h> ++#include <linux/reboot.h> + + #include "cbus.h" + +@@ -323,6 +324,13 @@ + } + module_exit(cbus_bus_exit); + ++void cbus_emergency(void) ++{ ++ machine_power_off(); ++ panic("cbus: Failed to halt machine in emergency state\n"); ++} ++EXPORT_SYMBOL(cbus_emergency); ++ + MODULE_DESCRIPTION("CBUS serial protocol"); + MODULE_LICENSE("GPL"); + MODULE_AUTHOR("Juha Yrjölä"); +Index: linux-2.6.38-rc6/drivers/cbus/cbus.h +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/cbus/cbus.h 2011-02-26 23:22:54.975733211 +0100 ++++ linux-2.6.38-rc6/drivers/cbus/cbus.h 2011-02-26 23:25:39.891753515 +0100 +@@ -26,4 +26,6 @@ + extern int cbus_read_reg(unsigned dev, unsigned reg); + extern int cbus_write_reg(unsigned dev, unsigned reg, unsigned val); + ++NORET_TYPE void cbus_emergency(void) ATTRIB_NORET; ++ + #endif /* __DRIVERS_CBUS_CBUS_H */ +Index: linux-2.6.38-rc6/drivers/cbus/retu.c +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/cbus/retu.c 2011-02-26 23:25:18.905358127 +0100 ++++ linux-2.6.38-rc6/drivers/cbus/retu.c 2011-02-26 23:25:39.891753515 +0100 +@@ -423,6 +423,11 @@ + if (!child) + return -ENOMEM; + ++ child = retu_allocate_child("retu-n810bm", parent, irq_base, ++ RETU_INT_ADCS, -1, 1); ++ if (!child) ++ return -ENOMEM; ++ + return 0; + } + +Index: linux-2.6.38-rc6/drivers/cbus/tahvo.c +=================================================================== +--- linux-2.6.38-rc6.orig/drivers/cbus/tahvo.c 2011-02-26 23:22:54.894731777 +0100 ++++ linux-2.6.38-rc6/drivers/cbus/tahvo.c 2011-02-26 23:25:39.891753515 +0100 +@@ -115,6 +115,7 @@ + tahvo_write_reg(reg, w); + spin_unlock_irqrestore(&tahvo_lock, flags); + } ++EXPORT_SYMBOL(tahvo_set_clear_reg_bits); + + /* + * Disable given TAHVO interrupt |