diff options
Diffstat (limited to 'target/linux/omap24xx/patches-3.1/250-cbus.patch')
| -rw-r--r-- | target/linux/omap24xx/patches-3.1/250-cbus.patch | 3461 |
1 files changed, 0 insertions, 3461 deletions
diff --git a/target/linux/omap24xx/patches-3.1/250-cbus.patch b/target/linux/omap24xx/patches-3.1/250-cbus.patch deleted file mode 100644 index d8798368ac..0000000000 --- a/target/linux/omap24xx/patches-3.1/250-cbus.patch +++ /dev/null @@ -1,3461 +0,0 @@ ---- /dev/null -+++ b/drivers/cbus/cbus.c -@@ -0,0 +1,333 @@ -+/* -+ * 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 <linux/platform_data/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; -+}; -+ -+/** -+ * 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 -+ * @child: the child device -+ * @dev: device address -+ * @reg: register address -+ */ -+int cbus_read_reg(struct device *child, unsigned dev, unsigned reg) -+{ -+ struct cbus_host *host = dev_get_drvdata(child->parent); -+ -+ return cbus_transfer(host, CBUS_XFER_READ, dev, reg, 0); -+} -+EXPORT_SYMBOL(cbus_read_reg); -+ -+/** -+ * cbus_write_reg - writes to a given register of the device -+ * @child: the child device -+ * @dev: device address -+ * @reg: register address -+ * @val: data to be written to @reg -+ */ -+int cbus_write_reg(struct device *child, unsigned dev, unsigned reg, -+ unsigned val) -+{ -+ struct cbus_host *host = dev_get_drvdata(child->parent); -+ -+ return cbus_transfer(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); -+ -+ 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); -+} -+ -+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>"); -+ ---- /dev/null -+++ b/drivers/cbus/cbus.h -@@ -0,0 +1,30 @@ -+/* -+ * 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(struct device *, unsigned dev, unsigned reg); -+extern int cbus_write_reg(struct device *, unsigned dev, unsigned reg, -+ unsigned val); -+ -+#endif /* __DRIVERS_CBUS_CBUS_H */ ---- /dev/null -+++ b/drivers/cbus/Kconfig -@@ -0,0 +1,86 @@ -+# -+# CBUS device configuration -+# -+ -+menu "CBUS support" -+ -+config CBUS -+ 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. -+ -+if CBUS_TAHVO -+ -+config CBUS_TAHVO_USB -+ depends on USB -+ depends on ARCH_OMAP -+ select USB_OTG_UTILS -+ 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. -+ -+endif # CBUS_TAHVO -+ -+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. -+ -+if CBUS_RETU -+ -+config CBUS_RETU_POWERBUTTON -+ depends on INPUT -+ 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 RTC_CLASS -+ depends on ARCH_OMAP -+ 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 SYSFS && WATCHDOG -+ depends on ARCH_OMAP -+ 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 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. -+ -+endif # CBUS_RETU -+ -+endmenu ---- /dev/null -+++ b/drivers/cbus/Makefile -@@ -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 ---- /dev/null -+++ b/drivers/cbus/retu.c -@@ -0,0 +1,549 @@ -+/** -+ * 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/mutex.h> -+#include <linux/irq.h> -+#include <linux/interrupt.h> -+#include <linux/platform_device.h> -+#include <linux/platform_data/cbus.h> -+ -+#include <asm/bitops.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->dev, 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->dev, 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); -+ -+ mutex_lock(&retu->mutex); -+ __retu_write_reg(retu, reg, val); -+ mutex_unlock(&retu->mutex); -+} -+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; -+ -+ u16 idr; -+ u16 imr; -+ -+ mutex_lock(&retu->mutex); -+ idr = __retu_read_reg(retu, RETU_REG_IDR); -+ imr = __retu_read_reg(retu, RETU_REG_IMR); -+ mutex_unlock(&retu->mutex); -+ -+ idr &= ~imr; -+ if (!idr) { -+ dev_vdbg(retu->dev, "No IRQ, spurious?\n"); -+ return IRQ_NONE; -+ } -+ -+ while (idr) { -+ unsigned long pending = __ffs(idr); -+ unsigned int irq; -+ -+ idr &= ~BIT(pending); -+ irq = pending + retu->irq_base; -+ handle_nested_irq(irq); -+ } -+ -+ 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 -+ irq_set_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++) { -+ irq_set_chip_data(irq, retu); -+ irq_set_chip_and_handler(irq, &retu_irq_chip, -+ handle_simple_irq); -+ irq_set_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 -+ irq_set_chip_and_handler(irq, NULL, NULL); -+ irq_set_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 __devinit 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); -+ -+ ret = irq_alloc_descs(-1, 0, MAX_RETU_IRQ_HANDLERS, 0); -+ if (ret < 0) { -+ dev_err(&pdev->dev, "failed to allocate IRQ descs\n"); -+ goto err1; -+ } -+ -+ retu->irq = platform_get_irq(pdev, 0); -+ retu->irq_base = ret; -+ retu->irq_end = ret + MAX_RETU_IRQ_HANDLERS; -+ retu->devid = pdata->devid; -+ retu->dev = &pdev->dev; -+ 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, -+ IRQF_ONESHOT, "retu", retu); -+ if (ret < 0) { -+ dev_err(&pdev->dev, "Unable to register IRQ handler\n"); -+ goto err2; -+ } -+ -+ irq_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 err3; -+ } -+ -+ return 0; -+ -+err3: -+ pm_power_off = NULL; -+ free_irq(retu->irq, retu); -+ -+err2: -+ retu_irq_exit(retu); -+ irq_free_descs(retu->irq_base, MAX_RETU_IRQ_HANDLERS); -+ -+err1: -+ kfree(retu); -+ the_retu = NULL; -+ -+err0: -+ return ret; -+} -+ -+static int __devexit retu_remove(struct platform_device *pdev) -+{ -+ struct retu *retu = platform_get_drvdata(pdev); -+ -+ pm_power_off = NULL; -+ the_retu = NULL; -+ -+ free_irq(retu->irq, retu); -+ retu_irq_exit(retu); -+ irq_free_descs(retu->irq_base, MAX_RETU_IRQ_HANDLERS); -+ kfree(retu); -+ -+ return 0; -+} -+ -+static struct platform_driver retu_driver = { -+ .probe = retu_probe, -+ .remove = __devexit_p(retu_remove), -+ .driver = { -+ .name = "retu", -+ }, -+}; -+ -+static int __init retu_init(void) -+{ -+ return platform_driver_register(&retu_driver); -+} -+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"); ---- /dev/null -+++ b/drivers/cbus/retu.h -@@ -0,0 +1,85 @@ -+/** -+ * 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_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 -+ -+/* 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 -+ -+/* 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, -+ u16 clear); -+int retu_read_adc(struct device *child, int channel); -+ -+#endif /* __DRIVERS_CBUS_RETU_H */ ---- /dev/null -+++ b/drivers/cbus/retu-headset.c -@@ -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"); ---- /dev/null -+++ b/drivers/cbus/retu-pwrbutton.c -@@ -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>"); -+ ---- /dev/null -+++ b/drivers/cbus/retu-rtc.c -@@ -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>"); -+ ---- /dev/null -+++ b/drivers/cbus/retu-wdt.c -@@ -0,0 +1,272 @@ -+/** -+ * drivers/cbus/retu-wdt.c -+ * -+ * Driver for Retu watchdog -+ * -+ * Copyright (C) 2004, 2005 Nokia Corporation -+ * -+ * Written by Amit Kucheria <amit.kucheria@nokia.com> -+ * -+ * Cleanups by Michael Buesch <mb@bu3sch.de> (C) 2011 -+ * -+ * 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 -+ -+struct retu_wdt_dev { -+ struct device *dev; -+ unsigned int period_val; /* Current period of watchdog */ -+ unsigned long users; -+ struct miscdevice miscdev; -+ struct delayed_work ping_work; -+ struct mutex mutex; -+}; -+ -+ -+static inline void _retu_modify_counter(struct retu_wdt_dev *wdev, -+ unsigned int new) -+{ -+ retu_write_reg(wdev->dev, RETU_REG_WATCHDOG, (u16)new); -+} -+ -+static int retu_modify_counter(struct retu_wdt_dev *wdev, unsigned int new) -+{ -+ if (new < RETU_WDT_MIN_TIMER || new > RETU_WDT_MAX_TIMER) -+ return -EINVAL; -+ -+ mutex_lock(&wdev->mutex); -+ wdev->period_val = new; -+ _retu_modify_counter(wdev, wdev->period_val); -+ mutex_unlock(&wdev->mutex); -+ -+ return 0; -+} -+ -+/* -+ * 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_ping_enable(struct retu_wdt_dev *wdev) -+{ -+ _retu_modify_counter(wdev, RETU_WDT_MAX_TIMER); -+ schedule_delayed_work(&wdev->ping_work, -+ round_jiffies_relative(RETU_WDT_DEFAULT_TIMER * HZ)); -+} -+ -+static void retu_wdt_ping_disable(struct retu_wdt_dev *wdev) -+{ -+ _retu_modify_counter(wdev, RETU_WDT_MAX_TIMER); -+ cancel_delayed_work_sync(&wdev->ping_work); -+} -+ -+static void retu_wdt_ping_work(struct work_struct *work) -+{ -+ struct retu_wdt_dev *wdev = container_of(to_delayed_work(work), -+ struct retu_wdt_dev, ping_work); -+ retu_wdt_ping_enable(wdev); -+} -+ -+static int retu_wdt_open(struct inode *inode, struct file *file) -+{ -+ struct miscdevice *mdev = file->private_data; -+ struct retu_wdt_dev *wdev = container_of(mdev, struct retu_wdt_dev, miscdev); -+ -+ if (test_and_set_bit(0, &wdev->users)) -+ return -EBUSY; -+ -+ retu_wdt_ping_disable(wdev); -+ -+ return nonseekable_open(inode, file); -+} -+ -+static int retu_wdt_release(struct inode *inode, struct file *file) -+{ -+ struct miscdevice *mdev = file->private_data; -+ struct retu_wdt_dev *wdev = container_of(mdev, struct retu_wdt_dev, miscdev); -+ -+#ifndef CONFIG_WATCHDOG_NOWAYOUT -+ retu_wdt_ping_enable(wdev); -+#endif -+ clear_bit(0, &wdev->users); -+ -+ return 0; -+} -+ -+static ssize_t retu_wdt_write(struct file *file, const char __user *data, -+ size_t len, loff_t *ppos) -+{ -+ struct miscdevice *mdev = file->private_data; -+ struct retu_wdt_dev *wdev = container_of(mdev, struct retu_wdt_dev, miscdev); -+ -+ if (len) -+ retu_modify_counter(wdev, RETU_WDT_MAX_TIMER); -+ -+ return len; -+} -+ -+static long retu_wdt_ioctl(struct file *file, unsigned int cmd, -+ unsigned long arg) -+{ -+ struct miscdevice *mdev = file->private_data; -+ struct retu_wdt_dev *wdev = container_of(mdev, struct retu_wdt_dev, miscdev); -+ int new_margin; -+ -+ static const 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(wdev, RETU_WDT_MAX_TIMER); -+ break; -+ case WDIOC_SETTIMEOUT: -+ if (get_user(new_margin, (int __user *)arg)) -+ return -EFAULT; -+ retu_modify_counter(wdev, new_margin); -+ /* Fall through */ -+ case WDIOC_GETTIMEOUT: -+ return put_user(wdev->period_val, (int __user *)arg); -+ } -+ -+ 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->period_val = RETU_WDT_DEFAULT_TIMER; -+ mutex_init(&wdev->mutex); -+ -+ platform_set_drvdata(pdev, wdev); -+ -+ wdev->miscdev.parent = &pdev->dev; -+ wdev->miscdev.minor = WATCHDOG_MINOR; -+ wdev->miscdev.name = "watchdog"; -+ wdev->miscdev.fops = &retu_wdt_fops; -+ -+ ret = misc_register(&wdev->miscdev); -+ if (ret) -+ goto err_free_wdev; -+ -+ INIT_DELAYED_WORK(&wdev->ping_work, retu_wdt_ping_work); -+ -+ /* Kick the watchdog for kernel booting to finish. -+ * If nowayout is not set, we start the ping work. */ -+#ifdef CONFIG_WATCHDOG_NOWAYOUT -+ retu_modify_counter(wdev, RETU_WDT_MAX_TIMER); -+#else -+ retu_wdt_ping_enable(wdev); -+#endif -+ -+ return 0; -+ -+err_free_wdev: -+ 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->miscdev); -+ cancel_delayed_work_sync(&wdev->ping_work); -+ 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_DESCRIPTION("Retu WatchDog"); -+MODULE_AUTHOR("Amit Kucheria"); -+MODULE_LICENSE("GPL"); ---- /dev/null -+++ b/drivers/cbus/tahvo.c -@@ -0,0 +1,423 @@ -+/** -+ * 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/slab.h> -+#include <linux/kernel.h> -+#include <linux/errno.h> -+#include <linux/device.h> -+#include <linux/irq.h> -+#include <linux/interrupt.h> -+#include <linux/platform_device.h> -+#include <linux/platform_data/cbus.h> -+#include <linux/mutex.h> -+ -+#include "cbus.h" -+#include "tahvo.h" -+ -+struct tahvo { -+ /* device lock */ -+ struct mutex mutex; -+ struct device *dev; -+ -+ int irq_base; -+ int irq_end; -+ int irq; -+ -+ int ack; -+ int mask; -+ -+ unsigned int mask_pending:1; -+ unsigned int ack_pending:1; -+ unsigned int is_betty:1; -+}; -+ -+/** -+ * __tahvo_read_reg - Reads a value from a register in Tahvo -+ * @tahvo: pointer to tahvo structure -+ * @reg: the register address to read from -+ */ -+static int __tahvo_read_reg(struct tahvo *tahvo, unsigned reg) -+{ -+ return cbus_read_reg(tahvo->dev, CBUS_TAHVO_DEVICE_ID, reg); -+} -+ -+/** -+ * __tahvo_write_reg - Writes a value to a register in Tahvo -+ * @tahvo: pointer to tahvo structure -+ * @reg: register address to write to -+ * @val: the value to be written to @reg -+ */ -+static void __tahvo_write_reg(struct tahvo *tahvo, unsigned reg, u16 val) -+{ -+ cbus_write_reg(tahvo->dev, CBUS_TAHVO_DEVICE_ID, reg, val); -+} -+ -+/** -+ * tahvo_read_reg - Read a value from a register in Tahvo -+ * @child: device pointer from the calling child -+ * @reg: the register to read from -+ * -+ * This function returns the contents of the specified register -+ */ -+int tahvo_read_reg(struct device *child, unsigned reg) -+{ -+ struct tahvo *tahvo = dev_get_drvdata(child->parent); -+ -+ return __tahvo_read_reg(tahvo, reg); -+} -+EXPORT_SYMBOL(tahvo_read_reg); -+ -+/** -+ * tahvo_write_reg - Write a value to a register in Tahvo -+ * @child: device pointer from the 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 tahvo_write_reg(struct device *child, unsigned reg, u16 val) -+{ -+ struct tahvo *tahvo = dev_get_drvdata(child->parent); -+ -+ __tahvo_write_reg(tahvo, reg, val); -+} -+EXPORT_SYMBOL(tahvo_write_reg); -+ -+/** -+ * tahvo_set_clear_reg_bits - set and clear register bits atomically -+ * @child: device pointer from the calling child -+ * @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(struct device *child, unsigned reg, u16 set, -+ u16 clear) -+{ -+ struct tahvo *tahvo = dev_get_drvdata(child->parent); -+ u16 w; -+ -+ mutex_lock(&tahvo->mutex); -+ w = __tahvo_read_reg(tahvo, reg); -+ w &= ~clear; -+ w |= set; -+ __tahvo_write_reg(tahvo, reg, w); -+ mutex_unlock(&tahvo->mutex); -+} -+ -+static irqreturn_t tahvo_irq_handler(int irq, void *_tahvo) -+{ -+ struct tahvo *tahvo = _tahvo; -+ u16 id; -+ u16 im; -+ -+ id = __tahvo_read_reg(tahvo, TAHVO_REG_IDR); -+ im = __tahvo_read_reg(tahvo, TAHVO_REG_IMR); -+ id &= ~im; -+ -+ if (!id) { -+ dev_vdbg(tahvo->dev, "No IRQ, spurious ?\n"); -+ return IRQ_NONE; -+ } -+ -+ while (id) { -+ unsigned long pending = __ffs(id); -+ unsigned int irq; -+ -+ id &= ~BIT(pending); -+ irq = pending + tahvo->irq_base; -+ handle_nested_irq(irq); -+ } -+ -+ return IRQ_HANDLED; -+} -+ -+/* -------------------------------------------------------------------------- */ -+ -+static void tahvo_irq_bus_lock(struct irq_data *data) -+{ -+ struct tahvo *tahvo = irq_data_get_irq_chip_data(data); -+ -+ mutex_lock(&tahvo->mutex); -+} -+ -+static void tahvo_irq_bus_sync_unlock(struct irq_data *data) -+{ -+ struct tahvo *tahvo = irq_data_get_irq_chip_data(data); -+ -+ if (tahvo->mask_pending) { -+ __tahvo_write_reg(tahvo, TAHVO_REG_IMR, tahvo->mask); -+ tahvo->mask_pending = false; -+ } -+ -+ if (tahvo->ack_pending) { -+ __tahvo_write_reg(tahvo, TAHVO_REG_IDR, tahvo->ack); -+ tahvo->ack_pending = false; -+ } -+ -+ mutex_unlock(&tahvo->mutex); -+} -+ -+static void tahvo_irq_mask(struct irq_data *data) -+{ -+ struct tahvo *tahvo = irq_data_get_irq_chip_data(data); -+ int irq = data->irq; -+ -+ tahvo->mask |= (1 << (irq - tahvo->irq_base)); -+ tahvo->mask_pending = true; -+} -+ -+static void tahvo_irq_unmask(struct irq_data *data) -+{ -+ struct tahvo *tahvo = irq_data_get_irq_chip_data(data); -+ int irq = data->irq; -+ -+ tahvo->mask &= ~(1 << (irq - tahvo->irq_base)); -+ tahvo->mask_pending = true; -+} -+ -+static void tahvo_irq_ack(struct irq_data *data) -+{ -+ struct tahvo *tahvo = irq_data_get_irq_chip_data(data); -+ int irq = data->irq; -+ -+ tahvo->ack |= (1 << (irq - tahvo->irq_base)); -+ tahvo->ack_pending = true; -+} -+ -+static struct irq_chip tahvo_irq_chip = { -+ .name = "tahvo", -+ .irq_bus_lock = tahvo_irq_bus_lock, -+ .irq_bus_sync_unlock = tahvo_irq_bus_sync_unlock, -+ .irq_mask = tahvo_irq_mask, -+ .irq_unmask = tahvo_irq_unmask, -+ .irq_ack = tahvo_irq_ack, -+}; -+ -+static inline void tahvo_irq_setup(int irq) -+{ -+#ifdef CONFIG_ARM -+ set_irq_flags(irq, IRQF_VALID); -+#else -+ irq_set_noprobe(irq); -+#endif -+} -+ -+static void tahvo_irq_init(struct tahvo *tahvo) -+{ -+ int base = tahvo->irq_base; -+ int end = tahvo->irq_end; -+ int irq; -+ -+ for (irq = base; irq < end; irq++) { -+ irq_set_chip_data(irq, tahvo); -+ irq_set_chip_and_handler(irq, &tahvo_irq_chip, -+ handle_simple_irq); -+ irq_set_nested_thread(irq, 1); -+ tahvo_irq_setup(irq); -+ } -+} -+ -+/* -------------------------------------------------------------------------- */ -+ -+static struct resource generic_resources[] = { -+ { -+ .start = -EINVAL, /* fixed later */ -+ .flags = IORESOURCE_IRQ, -+ }, -+}; -+ -+static struct device *tahvo_allocate_child(const char *name, -+ struct device *parent, int irq) -+{ -+ struct platform_device *pdev; -+ int ret; -+ -+ pdev = platform_device_alloc(name, -1); -+ if (!pdev) { -+ dev_dbg(parent, "can't allocate %s\n", name); -+ goto err0; -+ } -+ -+ pdev->dev.parent = parent; -+ -+ if (irq > 0) { -+ generic_resources[0].start = irq; -+ -+ ret = platform_device_add_resources(pdev, generic_resources, -+ ARRAY_SIZE(generic_resources)); -+ if (ret < 0) { -+ dev_dbg(parent, "can't add resources to %s\n", name); -+ goto err1; -+ } -+ } -+ -+ ret = platform_device_add(pdev); -+ if (ret < 0) { -+ dev_dbg(parent, "can't add %s\n", name); -+ goto err1; -+ } -+ -+ return &pdev->dev; -+ -+err1: -+ platform_device_put(pdev); -+ -+err0: -+ return NULL; -+} -+ -+static int tahvo_allocate_children(struct device *parent, int irq_base) -+{ -+ struct device *child; -+ -+ child = tahvo_allocate_child("tahvo-usb", parent, -+ irq_base + TAHVO_INT_VBUSON); -+ if (!child) -+ return -ENOMEM; -+ -+ child = tahvo_allocate_child("tahvo-pwm", parent, -1); -+ if (!child) -+ return -ENOMEM; -+ -+ return 0; -+} -+ -+static int __devinit tahvo_probe(struct platform_device *pdev) -+{ -+ struct tahvo *tahvo; -+ int rev; -+ int ret; -+ int irq; -+ int id; -+ -+ tahvo = kzalloc(sizeof(*tahvo), GFP_KERNEL); -+ if (!tahvo) { -+ dev_err(&pdev->dev, "not enough memory\n"); -+ ret = -ENOMEM; -+ goto err0; -+ } -+ -+ irq = platform_get_irq(pdev, 0); -+ platform_set_drvdata(pdev, tahvo); -+ -+ mutex_init(&tahvo->mutex); -+ -+ ret = irq_alloc_descs(-1, 0, MAX_TAHVO_IRQ_HANDLERS, 0); -+ if (ret < 0) { -+ dev_err(&pdev->dev, "failed to allocate IRQ descs\n"); -+ goto err1; -+ } -+ -+ tahvo->irq_base = ret; -+ tahvo->irq_end = ret + MAX_TAHVO_IRQ_HANDLERS; -+ tahvo->dev = &pdev->dev; -+ tahvo->irq = irq; -+ -+ tahvo_irq_init(tahvo); -+ -+ rev = __tahvo_read_reg(tahvo, TAHVO_REG_ASICR); -+ -+ id = (rev >> 8) & 0xff; -+ -+ if (id == 0x0b) -+ tahvo->is_betty = true; -+ -+ ret = tahvo_allocate_children(&pdev->dev, tahvo->irq_base); -+ if (ret < 0) { -+ dev_err(&pdev->dev, "failed to allocate children\n"); -+ goto err2; -+ } -+ -+ dev_err(&pdev->dev, "%s v%d.%d found\n", -+ tahvo->is_betty ? "Betty" : "Tahvo", -+ (rev >> 4) & 0x0f, rev & 0x0f); -+ -+ /* Mask all TAHVO interrupts */ -+ __tahvo_write_reg(tahvo, TAHVO_REG_IMR, 0xffff); -+ -+ ret = request_threaded_irq(irq, NULL, tahvo_irq_handler, -+ IRQF_TRIGGER_RISING | IRQF_ONESHOT, -+ "tahvo", tahvo); -+ if (ret < 0) { -+ dev_err(&pdev->dev, "Unable to register IRQ handler\n"); -+ goto err2; -+ } -+ -+ return 0; -+ -+err2: -+ irq_free_descs(tahvo->irq_base, MAX_TAHVO_IRQ_HANDLERS); -+ -+err1: -+ kfree(tahvo); -+ -+err0: -+ return ret; -+} -+ -+static int __devexit tahvo_remove(struct platform_device *pdev) -+{ -+ struct tahvo *tahvo = platform_get_drvdata(pdev); -+ int irq; -+ -+ irq = platform_get_irq(pdev, 0); -+ -+ free_irq(irq, 0); -+ irq_free_descs(tahvo->irq_base, MAX_TAHVO_IRQ_HANDLERS); -+ kfree(tahvo); -+ -+ return 0; -+} -+ -+static struct platform_driver tahvo_driver = { -+ .probe = tahvo_probe, -+ .remove = __devexit_p(tahvo_remove), -+ .driver = { -+ .name = "tahvo", -+ }, -+}; -+ -+static int __init tahvo_init(void) -+{ -+ return platform_driver_register(&tahvo_driver); -+} -+subsys_initcall(tahvo_init); -+ -+static void __exit tahvo_exit(void) -+{ -+ platform_driver_unregister(&tahvo_driver); -+} -+module_exit(tahvo_exit); -+ -+MODULE_DESCRIPTION("Tahvo ASIC control"); -+MODULE_LICENSE("GPL"); -+MODULE_AUTHOR("Juha Yrjölä"); -+MODULE_AUTHOR("David Weinehall"); -+MODULE_AUTHOR("Mikko Ylinen"); -+ ---- /dev/null -+++ b/drivers/cbus/tahvo.h -@@ -0,0 +1,58 @@ -+/* -+ * 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_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 -+ -+int tahvo_read_reg(struct device *child, unsigned reg); -+void tahvo_write_reg(struct device *child, unsigned reg, u16 val); -+void tahvo_set_clear_reg_bits(struct device *child, unsigned reg, u16 set, -+ u16 clear); -+ -+#endif /* __DRIVERS_CBUS_TAHVO_H */ ---- /dev/null -+++ b/drivers/cbus/tahvo-usb.c -@@ -0,0 +1,740 @@ -+/** -+ * 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 device *dev; -+ struct platform_device *pt_dev; -+ struct otg_transceiver otg; -+ int vbus_state; -+ struct mutex serialize; -+#ifdef CONFIG_USB_OTG -+ int tahvo_mode; -+#endif -+ struct clk *ick; -+ -+ int irq; -+}; -+static struct tahvo_usb *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) -+{ -+ 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; -+ -+static void check_vbus_state(struct tahvo_usb *tu) -+{ -+ int reg, prev_state; -+ -+ reg = tahvo_read_reg(tu->dev, 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; -+ 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(tu->dev, 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) -+{ -+ 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(tu->dev, 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); -+ -+ /* 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(tu->dev, 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(tu->dev, TAHVO_REG_USBR); -+ if (suspend) -+ w &= ~USBR_NSUSPEND; -+ else -+ w |= USBR_NSUSPEND; -+ tahvo_write_reg(tu->dev, 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); -+ } -+ -+ 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 irqreturn_t tahvo_usb_vbus_interrupt(int irq, void *_tu) -+{ -+ struct tahvo_usb *tu = _tu; -+ -+ check_vbus_state(tu); -+ -+ return IRQ_HANDLED; -+} -+ -+#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; -+ int irq; -+ -+ dev_dbg(dev, "probe\n"); -+ -+ /* Create driver data */ -+ tu = kzalloc(sizeof(*tu), GFP_KERNEL); -+ if (!tu) -+ return -ENOMEM; -+ tahvo_usb_device = tu; -+ -+ tu->dev = dev; -+ tu->pt_dev = pdev; -+#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 -+ -+ mutex_init(&tu->serialize); -+ -+ tu->ick = clk_get(NULL, "usb_l4_ick"); -+ if (IS_ERR(tu->ick)) { -+ dev_err(dev, "Failed to get usb_l4_ick\n"); -+ ret = PTR_ERR(tu->ick); -+ goto err_free_tu; -+ } -+ clk_enable(tu->ick); -+ -+ /* Set initial state, so that we generate kevents only on -+ * state changes */ -+ tu->vbus_state = tahvo_read_reg(tu->dev, TAHVO_REG_IDSR) & 0x01; -+ -+ irq = platform_get_irq(pdev, 0); -+ tu->irq = irq; -+ -+ /* We cannot enable interrupt until omap_udc is initialized */ -+ ret = request_threaded_irq(irq, NULL, tahvo_usb_vbus_interrupt, -+ IRQF_ONESHOT, "tahvo-vbus", tu); -+ if (ret != 0) { -+ printk(KERN_ERR "Could not register Tahvo interrupt for VBUS\n"); -+ goto err_release_clk; -+ } -+ -+ /* 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"); -+ goto err_free_irq; -+ } -+ -+ dev_set_drvdata(dev, tu); -+ -+ return 0; -+ -+err_free_irq: -+ free_irq(tu->irq, tu); -+err_release_clk: -+ clk_disable(tu->ick); -+ clk_put(tu->ick); -+err_free_tu: -+ kfree(tu); -+ tahvo_usb_device = NULL; -+ -+ return ret; -+} -+ -+static int __exit tahvo_usb_remove(struct platform_device *pdev) -+{ -+ struct tahvo_usb *tu = platform_get_drvdata(pdev); -+ -+ dev_dbg(&pdev->dev, "remove\n"); -+ -+ free_irq(tu->irq, tu); -+ 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 -+ clk_disable(tu->ick); -+ clk_put(tu->ick); -+ -+ kfree(tu); -+ tahvo_usb_device = NULL; -+ -+ 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"); ---- a/drivers/Makefile -+++ b/drivers/Makefile -@@ -76,7 +76,7 @@ obj-$(CONFIG_GAMEPORT) += input/gamepor - obj-$(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_PTP_1588_CLOCK) += ptp/ - obj-$(CONFIG_W1) += w1/ ---- a/drivers/Kconfig -+++ b/drivers/Kconfig -@@ -2,6 +2,8 @@ menu "Device Drivers" - - source "drivers/base/Kconfig" - -+source "drivers/cbus/Kconfig" -+ - source "drivers/connector/Kconfig" - - source "drivers/mtd/Kconfig" |