diff options
Diffstat (limited to 'target/linux/omap24xx/patches-2.6.38/500-cbus.patch')
| -rw-r--r-- | target/linux/omap24xx/patches-2.6.38/500-cbus.patch | 3563 |
1 files changed, 3563 insertions, 0 deletions
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" |