+++ /dev/null
----
- 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(-)
-
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/cbus.c
-@@ -0,0 +1,309 @@
-+/*
-+ * drivers/cbus/cbus.c
-+ *
-+ * Support functions for CBUS serial protocol
-+ *
-+ * 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/device.h>
-+#include <linux/init.h>
-+#include <linux/kernel.h>
-+#include <linux/delay.h>
-+#include <linux/spinlock.h>
-+#include <linux/gpio.h>
-+#include <linux/platform_device.h>
-+#include <linux/slab.h>
-+
-+#include <asm/io.h>
-+#include <asm/mach-types.h>
-+
-+#include <plat/board.h>
-+#include <plat/cbus.h>
-+
-+#include "cbus.h"
-+
-+struct cbus_host *cbus_host = NULL;
-+EXPORT_SYMBOL(cbus_host);
-+
-+#ifdef CONFIG_ARCH_OMAP1
-+/* We use our own MPUIO functions to get closer to 1MHz bus speed */
-+
-+static inline void cbus_set_gpio_direction(u32 base, int mpuio, int is_input)
-+{
-+ u16 w;
-+
-+ mpuio &= 0x0f;
-+ w = __raw_readw(base + OMAP_MPUIO_IO_CNTL);
-+ if (is_input)
-+ w |= 1 << mpuio;
-+ else
-+ w &= ~(1 << mpuio);
-+ __raw_writew(w, base + OMAP_MPUIO_IO_CNTL);
-+
-+}
-+
-+static inline void cbus_set_gpio_dataout(u32 base, int mpuio, int enable)
-+{
-+ u16 w;
-+
-+ mpuio &= 0x0f;
-+ w = __raw_readw(base + OMAP_MPUIO_OUTPUT);
-+ if (enable)
-+ w |= 1 << mpuio;
-+ else
-+ w &= ~(1 << mpuio);
-+ __raw_writew(w, base + OMAP_MPUIO_OUTPUT);
-+}
-+
-+static inline int cbus_get_gpio_datain(u32 base, int mpuio)
-+{
-+ mpuio &= 0x0f;
-+
-+ return (__raw_readw(base + OMAP_MPUIO_INPUT_LATCH) & (1 << mpuio)) != 0;
-+}
-+
-+static void cbus_send_bit(struct cbus_host *host, u32 base, int bit,
-+ int set_to_input)
-+{
-+ cbus_set_gpio_dataout(base, host->dat_gpio, bit ? 1 : 0);
-+ cbus_set_gpio_dataout(base, host->clk_gpio, 1);
-+
-+ /* The data bit is read on the rising edge of CLK */
-+ if (set_to_input)
-+ cbus_set_gpio_direction(base, host->dat_gpio, 1);
-+
-+ cbus_set_gpio_dataout(base, host->clk_gpio, 0);
-+}
-+
-+static u8 cbus_receive_bit(struct cbus_host *host, u32 base)
-+{
-+ u8 ret;
-+
-+ cbus_set_gpio_dataout(base, host->clk_gpio, 1);
-+ ret = cbus_get_gpio_datain(base, host->dat_gpio);
-+ cbus_set_gpio_dataout(base, host->clk_gpio, 0);
-+
-+ return ret;
-+}
-+
-+#define cbus_output(base, gpio, val) cbus_set_gpio_direction(base, gpio, 0)
-+
-+#else
-+
-+#define cbus_output(base, gpio, val) gpio_direction_output(gpio, val)
-+#define cbus_set_gpio_dataout(base, gpio, enable) gpio_set_value(gpio, enable)
-+#define cbus_get_gpio_datain(base, int, gpio) gpio_get_value(gpio)
-+
-+static void _cbus_send_bit(struct cbus_host *host, int bit, int set_to_input)
-+{
-+ 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 (set_to_input)
-+ gpio_direction_input(host->dat_gpio);
-+
-+ gpio_set_value(host->clk_gpio, 0);
-+}
-+
-+static u8 _cbus_receive_bit(struct cbus_host *host)
-+{
-+ u8 ret;
-+
-+ gpio_set_value(host->clk_gpio, 1);
-+ ret = gpio_get_value(host->dat_gpio);
-+ gpio_set_value(host->clk_gpio, 0);
-+
-+ return ret;
-+}
-+
-+#define cbus_send_bit(host, base, bit, set_to_input) _cbus_send_bit(host, bit, set_to_input)
-+#define cbus_receive_bit(host, base) _cbus_receive_bit(host)
-+
-+#endif
-+
-+static int cbus_transfer(struct cbus_host *host, int dev, int reg, int data)
-+{
-+ int i;
-+ int is_read = 0;
-+ unsigned long flags;
-+ u32 base;
-+
-+#ifdef CONFIG_ARCH_OMAP1
-+ base = OMAP1_IO_ADDRESS(OMAP1_MPUIO_BASE);
-+#else
-+ base = 0;
-+#endif
-+
-+ if (data < 0)
-+ is_read = 1;
-+
-+ /* 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 */
-+ cbus_set_gpio_dataout(base, host->sel_gpio, 0);
-+
-+ /* Set the DAT pin to output */
-+ cbus_output(base, host->dat_gpio, 1);
-+
-+ /* Send the device address */
-+ for (i = 3; i > 0; i--)
-+ cbus_send_bit(host, base, dev & (1 << (i - 1)), 0);
-+
-+ /* Send the rw flag */
-+ cbus_send_bit(host, base, is_read, 0);
-+
-+ /* Send the register address */
-+ for (i = 5; i > 0; i--) {
-+ int set_to_input = 0;
-+
-+ if (is_read && i == 1)
-+ set_to_input = 1;
-+
-+ cbus_send_bit(host, base, reg & (1 << (i - 1)), set_to_input);
-+ }
-+
-+ if (!is_read) {
-+ for (i = 16; i > 0; i--)
-+ cbus_send_bit(host, base, data & (1 << (i - 1)), 0);
-+ } else {
-+ cbus_set_gpio_dataout(base, host->clk_gpio, 1);
-+ data = 0;
-+
-+ for (i = 16; i > 0; i--) {
-+ u8 bit = cbus_receive_bit(host, base);
-+
-+ if (bit)
-+ data |= 1 << (i - 1);
-+ }
-+ }
-+
-+ /* Indicate end of transfer, SEL goes up until next transfer */
-+ cbus_set_gpio_dataout(base, host->sel_gpio, 1);
-+ cbus_set_gpio_dataout(base, host->clk_gpio, 1);
-+ cbus_set_gpio_dataout(base, host->clk_gpio, 0);
-+
-+ spin_unlock_irqrestore(&host->lock, flags);
-+
-+ return is_read ? data : 0;
-+}
-+
-+/*
-+ * Read a given register from the device
-+ */
-+int cbus_read_reg(struct cbus_host *host, int dev, int reg)
-+{
-+ return cbus_host ? cbus_transfer(host, dev, reg, -1) : -ENODEV;
-+}
-+EXPORT_SYMBOL(cbus_read_reg);
-+
-+/*
-+ * Write to a given register of the device
-+ */
-+int cbus_write_reg(struct cbus_host *host, int dev, int reg, u16 val)
-+{
-+ return cbus_host ? cbus_transfer(host, dev, reg, (int)val) : -ENODEV;
-+}
-+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;
-+
-+ if ((ret = gpio_request(chost->clk_gpio, "CBUS clk")) < 0)
-+ goto exit1;
-+
-+ if ((ret = gpio_request(chost->dat_gpio, "CBUS data")) < 0)
-+ goto exit2;
-+
-+ if ((ret = gpio_request(chost->sel_gpio, "CBUS sel")) < 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->dat_gpio);
-+ gpio_free(chost->clk_gpio);
-+ kfree(chost);
-+}
-+
-+static struct platform_driver cbus_driver = {
-+ .remove = __exit_p(cbus_bus_remove),
-+ .driver = {
-+ .name = "cbus",
-+ },
-+};
-+
-+static int __init cbus_bus_init(void)
-+{
-+ return platform_driver_probe(&cbus_driver, cbus_bus_probe);
-+}
-+
-+subsys_initcall(cbus_bus_init);
-+
-+static void __exit cbus_bus_exit(void)
-+{
-+ platform_driver_unregister(&cbus_driver);
-+}
-+module_exit(cbus_bus_exit);
-+
-+MODULE_DESCRIPTION("CBUS serial protocol");
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Juha Yrjölä");
-+MODULE_AUTHOR("David Weinehall");
-+MODULE_AUTHOR("Mikko Ylinen");
-+
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/cbus.h
-@@ -0,0 +1,36 @@
-+/*
-+ * 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
-+
-+struct cbus_host {
-+ int clk_gpio, dat_gpio, sel_gpio;
-+ spinlock_t lock;
-+};
-+
-+extern struct cbus_host *cbus_host;
-+
-+extern int cbus_read_reg(struct cbus_host *host, int dev, int reg);
-+extern int cbus_write_reg(struct cbus_host *host, int dev, int reg, u16 val);
-+
-+#endif /* __DRIVERS_CBUS_CBUS_H */
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/Kconfig
-@@ -0,0 +1,89 @@
-+#
-+# 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_USER
-+ depends on CBUS_TAHVO
-+ bool "Support for Tahvo user space functions"
-+ ---help---
-+ If you want support for Tahvo's user space read/write etc. functions,
-+ 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_USER
-+ depends on CBUS_RETU
-+ bool "Support for Retu user space functions"
-+ ---help---
-+ If you want support for Retu's user space read/write etc. functions,
-+ 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 && SYSFS
-+ 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
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/Makefile
-@@ -0,0 +1,14 @@
-+#
-+# 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_TAHVO_USER) += tahvo-user.o
-+obj-$(CONFIG_CBUS_RETU_USER) += retu-user.o
-+obj-$(CONFIG_CBUS_RETU_HEADSET) += retu-headset.o
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/retu.c
-@@ -0,0 +1,468 @@
-+/**
-+ * 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/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 "retu.h"
-+
-+#define RETU_ID 0x01
-+#define PFX "retu: "
-+
-+static int retu_initialized;
-+static int retu_irq_pin;
-+static int retu_is_vilma;
-+
-+static struct tasklet_struct retu_tasklet;
-+spinlock_t retu_lock = SPIN_LOCK_UNLOCKED;
-+
-+static struct completion device_release;
-+
-+struct retu_irq_handler_desc {
-+ int (*func)(unsigned long);
-+ unsigned long arg;
-+ char name[8];
-+};
-+
-+static struct retu_irq_handler_desc retu_irq_handlers[MAX_RETU_IRQ_HANDLERS];
-+
-+/**
-+ * retu_read_reg - Read a value from a register in Retu
-+ * @reg: the register to read from
-+ *
-+ * This function returns the contents of the specified register
-+ */
-+int retu_read_reg(int reg)
-+{
-+ BUG_ON(!retu_initialized);
-+ return cbus_read_reg(cbus_host, RETU_ID, reg);
-+}
-+
-+/**
-+ * retu_write_reg - Write a value to a register in Retu
-+ * @reg: the register to write to
-+ * @reg: the value to write to the register
-+ *
-+ * This function writes a value to the specified register
-+ */
-+void retu_write_reg(int reg, u16 val)
-+{
-+ BUG_ON(!retu_initialized);
-+ cbus_write_reg(cbus_host, RETU_ID, reg, val);
-+}
-+
-+void retu_set_clear_reg_bits(int reg, u16 set, u16 clear)
-+{
-+ unsigned long flags;
-+ u16 w;
-+
-+ spin_lock_irqsave(&retu_lock, flags);
-+ w = retu_read_reg(reg);
-+ w &= ~clear;
-+ w |= set;
-+ retu_write_reg(reg, w);
-+ spin_unlock_irqrestore(&retu_lock, flags);
-+}
-+
-+#define ADC_MAX_CHAN_NUMBER 13
-+
-+int retu_read_adc(int channel)
-+{
-+ unsigned long flags;
-+ int res;
-+
-+ if (channel < 0 || channel > ADC_MAX_CHAN_NUMBER)
-+ return -EINVAL;
-+
-+ spin_lock_irqsave(&retu_lock, flags);
-+
-+ if ((channel == 8) && retu_is_vilma) {
-+ int scr = retu_read_reg(RETU_REG_ADCSCR);
-+ int ch = (retu_read_reg(RETU_REG_ADCR) >> 10) & 0xf;
-+ if (((scr & 0xff) != 0) && (ch != 8))
-+ retu_write_reg (RETU_REG_ADCSCR, (scr & ~0xff));
-+ }
-+
-+ /* Select the channel and read result */
-+ retu_write_reg(RETU_REG_ADCR, channel << 10);
-+ res = retu_read_reg(RETU_REG_ADCR) & 0x3ff;
-+
-+ if (retu_is_vilma)
-+ retu_write_reg(RETU_REG_ADCR, (1 << 13));
-+
-+ /* Unlock retu */
-+ spin_unlock_irqrestore(&retu_lock, flags);
-+
-+ return res;
-+}
-+
-+
-+static u16 retu_disable_bogus_irqs(u16 mask)
-+{
-+ int i;
-+
-+ for (i = 0; i < MAX_RETU_IRQ_HANDLERS; i++) {
-+ if (mask & (1 << i))
-+ continue;
-+ if (retu_irq_handlers[i].func != NULL)
-+ continue;
-+ /* an IRQ was enabled but we don't have a handler for it */
-+ printk(KERN_INFO PFX "disabling bogus IRQ %d\n", i);
-+ mask |= (1 << i);
-+ }
-+ return mask;
-+}
-+
-+/*
-+ * Disable given RETU interrupt
-+ */
-+void retu_disable_irq(int id)
-+{
-+ unsigned long flags;
-+ u16 mask;
-+
-+ spin_lock_irqsave(&retu_lock, flags);
-+ mask = retu_read_reg(RETU_REG_IMR);
-+ mask |= 1 << id;
-+ mask = retu_disable_bogus_irqs(mask);
-+ retu_write_reg(RETU_REG_IMR, mask);
-+ spin_unlock_irqrestore(&retu_lock, flags);
-+}
-+
-+/*
-+ * Enable given RETU interrupt
-+ */
-+void retu_enable_irq(int id)
-+{
-+ unsigned long flags;
-+ u16 mask;
-+
-+ if (id == 3) {
-+ printk("Enabling Retu IRQ %d\n", id);
-+ dump_stack();
-+ }
-+ spin_lock_irqsave(&retu_lock, flags);
-+ mask = retu_read_reg(RETU_REG_IMR);
-+ mask &= ~(1 << id);
-+ mask = retu_disable_bogus_irqs(mask);
-+ retu_write_reg(RETU_REG_IMR, mask);
-+ spin_unlock_irqrestore(&retu_lock, flags);
-+}
-+
-+/*
-+ * Acknowledge given RETU interrupt
-+ */
-+void retu_ack_irq(int id)
-+{
-+ retu_write_reg(RETU_REG_IDR, 1 << id);
-+}
-+
-+/*
-+ * RETU interrupt handler. Only schedules the tasklet.
-+ */
-+static irqreturn_t retu_irq_handler(int irq, void *dev_id)
-+{
-+ tasklet_schedule(&retu_tasklet);
-+ return IRQ_HANDLED;
-+}
-+
-+/*
-+ * Tasklet handler
-+ */
-+static void retu_tasklet_handler(unsigned long data)
-+{
-+ struct retu_irq_handler_desc *hnd;
-+ u16 id;
-+ u16 im;
-+ int i;
-+
-+ for (;;) {
-+ id = retu_read_reg(RETU_REG_IDR);
-+ im = ~retu_read_reg(RETU_REG_IMR);
-+ id &= im;
-+
-+ if (!id)
-+ break;
-+
-+ for (i = 0; id != 0; i++, id >>= 1) {
-+ if (!(id & 1))
-+ continue;
-+ hnd = &retu_irq_handlers[i];
-+ if (hnd->func == NULL) {
-+ /* Spurious retu interrupt - disable and ack it */
-+ printk(KERN_INFO "Spurious Retu interrupt "
-+ "(id %d)\n", i);
-+ retu_disable_irq(i);
-+ retu_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 RETU interrupt source.
-+ */
-+int retu_request_irq(int id, void *irq_handler, unsigned long arg, char *name)
-+{
-+ struct retu_irq_handler_desc *hnd;
-+
-+ if (irq_handler == NULL || id >= MAX_RETU_IRQ_HANDLERS ||
-+ name == NULL) {
-+ printk(KERN_ERR PFX "Invalid arguments to %s\n",
-+ __FUNCTION__);
-+ return -EINVAL;
-+ }
-+ hnd = &retu_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));
-+
-+ retu_ack_irq(id);
-+ retu_enable_irq(id);
-+
-+ return 0;
-+}
-+
-+/*
-+ * Unregister the handler for a given RETU interrupt source.
-+ */
-+void retu_free_irq(int id)
-+{
-+ struct retu_irq_handler_desc *hnd;
-+
-+ if (id >= MAX_RETU_IRQ_HANDLERS) {
-+ printk(KERN_ERR PFX "Invalid argument to %s\n",
-+ __FUNCTION__);
-+ return;
-+ }
-+ hnd = &retu_irq_handlers[id];
-+ if (hnd->func == NULL) {
-+ printk(KERN_ERR PFX "IRQ %d already freed\n", id);
-+ return;
-+ }
-+
-+ retu_disable_irq(id);
-+ hnd->func = NULL;
-+}
-+
-+/**
-+ * retu_power_off - Shut down power to system
-+ *
-+ * This function puts the system in power off state
-+ */
-+static void retu_power_off(void)
-+{
-+ /* Ignore power button state */
-+ retu_write_reg(RETU_REG_CC1, retu_read_reg(RETU_REG_CC1) | 2);
-+ /* Expire watchdog immediately */
-+ retu_write_reg(RETU_REG_WATCHDOG, 0);
-+ /* Wait for poweroff*/
-+ for (;;);
-+}
-+
-+/**
-+ * retu_probe - Probe for Retu ASIC
-+ * @dev: the Retu device
-+ *
-+ * Probe for the Retu ASIC and allocate memory
-+ * for its device-struct if found
-+ */
-+static int __devinit retu_probe(struct device *dev)
-+{
-+ int rev, ret;
-+
-+ /* Prepare tasklet */
-+ tasklet_init(&retu_tasklet, retu_tasklet_handler, 0);
-+
-+ /* REVISIT: Pass these from board-*.c files in platform_data */
-+ if (machine_is_nokia770()) {
-+ retu_irq_pin = 62;
-+ } else if (machine_is_nokia_n800() || machine_is_nokia_n810() ||
-+ machine_is_nokia_n810_wimax()) {
-+ retu_irq_pin = 108;
-+ } else {
-+ printk(KERN_ERR "cbus: Unsupported board for tahvo\n");
-+ return -ENODEV;
-+ }
-+
-+ if ((ret = gpio_request(retu_irq_pin, "RETU irq")) < 0) {
-+ printk(KERN_ERR PFX "Unable to reserve IRQ GPIO\n");
-+ return ret;
-+ }
-+
-+ /* Set the pin as input */
-+ gpio_direction_input(retu_irq_pin);
-+
-+ /* Rising edge triggers the IRQ */
-+ set_irq_type(gpio_to_irq(retu_irq_pin), IRQ_TYPE_EDGE_RISING);
-+
-+ retu_initialized = 1;
-+
-+ rev = retu_read_reg(RETU_REG_ASICR) & 0xff;
-+ if (rev & (1 << 7))
-+ retu_is_vilma = 1;
-+
-+ printk(KERN_INFO "%s v%d.%d found\n", retu_is_vilma ? "Vilma" : "Retu",
-+ (rev >> 4) & 0x07, rev & 0x0f);
-+
-+ /* Mask all RETU interrupts */
-+ retu_write_reg(RETU_REG_IMR, 0xffff);
-+
-+ ret = request_irq(gpio_to_irq(retu_irq_pin), retu_irq_handler, 0,
-+ "retu", 0);
-+ if (ret < 0) {
-+ printk(KERN_ERR PFX "Unable to register IRQ handler\n");
-+ gpio_free(retu_irq_pin);
-+ return ret;
-+ }
-+ set_irq_wake(gpio_to_irq(retu_irq_pin), 1);
-+
-+ /* Register power off function */
-+ pm_power_off = retu_power_off;
-+
-+#ifdef CONFIG_CBUS_RETU_USER
-+ /* Initialize user-space interface */
-+ if (retu_user_init() < 0) {
-+ printk(KERN_ERR "Unable to initialize driver\n");
-+ free_irq(gpio_to_irq(retu_irq_pin), 0);
-+ gpio_free(retu_irq_pin);
-+ return ret;
-+ }
-+#endif
-+
-+ return 0;
-+}
-+
-+static int retu_remove(struct device *dev)
-+{
-+#ifdef CONFIG_CBUS_RETU_USER
-+ retu_user_cleanup();
-+#endif
-+ /* Mask all RETU interrupts */
-+ retu_write_reg(RETU_REG_IMR, 0xffff);
-+ free_irq(gpio_to_irq(retu_irq_pin), 0);
-+ gpio_free(retu_irq_pin);
-+ tasklet_kill(&retu_tasklet);
-+
-+ return 0;
-+}
-+
-+static void retu_device_release(struct device *dev)
-+{
-+ complete(&device_release);
-+}
-+
-+static struct device_driver retu_driver = {
-+ .name = "retu",
-+ .bus = &platform_bus_type,
-+ .probe = retu_probe,
-+ .remove = retu_remove,
-+};
-+
-+static struct platform_device retu_device = {
-+ .name = "retu",
-+ .id = -1,
-+ .dev = {
-+ .release = retu_device_release,
-+ }
-+};
-+
-+/**
-+ * retu_init - initialise Retu driver
-+ *
-+ * Initialise the Retu driver and return 0 if everything worked ok
-+ */
-+static int __init retu_init(void)
-+{
-+ int ret = 0;
-+
-+ printk(KERN_INFO "Retu/Vilma driver initialising\n");
-+
-+ init_completion(&device_release);
-+
-+ if ((ret = driver_register(&retu_driver)) < 0)
-+ return ret;
-+
-+ if ((ret = platform_device_register(&retu_device)) < 0) {
-+ driver_unregister(&retu_driver);
-+ return ret;
-+ }
-+ return 0;
-+}
-+
-+/*
-+ * Cleanup
-+ */
-+static void __exit retu_exit(void)
-+{
-+ platform_device_unregister(&retu_device);
-+ driver_unregister(&retu_driver);
-+ wait_for_completion(&device_release);
-+}
-+
-+EXPORT_SYMBOL(retu_request_irq);
-+EXPORT_SYMBOL(retu_free_irq);
-+EXPORT_SYMBOL(retu_enable_irq);
-+EXPORT_SYMBOL(retu_disable_irq);
-+EXPORT_SYMBOL(retu_ack_irq);
-+EXPORT_SYMBOL(retu_read_reg);
-+EXPORT_SYMBOL(retu_write_reg);
-+
-+subsys_initcall(retu_init);
-+module_exit(retu_exit);
-+
-+MODULE_DESCRIPTION("Retu ASIC control");
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Juha Yrjölä, David Weinehall, and Mikko Ylinen");
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/retu.h
-@@ -0,0 +1,77 @@
-+/**
-+ * 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(int reg);
-+void retu_write_reg(int reg, u16 val);
-+void retu_set_clear_reg_bits(int reg, u16 set, u16 clear);
-+int retu_read_adc(int channel);
-+int retu_request_irq(int id, void *irq_handler, unsigned long arg, char *name);
-+void retu_free_irq(int id);
-+void retu_enable_irq(int id);
-+void retu_disable_irq(int id);
-+void retu_ack_irq(int id);
-+
-+#ifdef CONFIG_CBUS_RETU_USER
-+int retu_user_init(void);
-+void retu_user_cleanup(void);
-+#endif
-+
-+extern spinlock_t retu_lock;
-+
-+#endif /* __DRIVERS_CBUS_RETU_H */
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/retu-headset.c
-@@ -0,0 +1,356 @@
-+/**
-+ * 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/delay.h>
-+#include <linux/input.h>
-+#include <linux/platform_device.h>
-+#include <linux/slab.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 platform_device *pdev;
-+ struct input_dev *idev;
-+ unsigned bias_enabled;
-+ unsigned detection_enabled;
-+ unsigned pressed;
-+ struct timer_list enable_timer;
-+ struct timer_list detect_timer;
-+};
-+
-+static void retu_headset_set_bias(int enable)
-+{
-+ if (enable) {
-+ retu_set_clear_reg_bits(RETU_REG_AUDTXR,
-+ (1 << 0) | (1 << 1), 0);
-+ msleep(2);
-+ retu_set_clear_reg_bits(RETU_REG_AUDTXR, 1 << 3, 0);
-+ } else {
-+ retu_set_clear_reg_bits(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(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(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(RETU_REG_CC1, (1 << 10) | (1 << 8), 0);
-+ retu_enable_irq(RETU_INT_HOOK);
-+ }
-+ 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;
-+ retu_disable_irq(RETU_INT_HOOK);
-+ 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(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(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 void retu_headset_hook_interrupt(unsigned long arg)
-+{
-+ struct retu_headset *hs = (struct retu_headset *) arg;
-+ unsigned long flags;
-+
-+ retu_ack_irq(RETU_INT_HOOK);
-+ 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(RETU_REG_CC1, 0, (1 << 10) | (1 << 8));
-+ mod_timer(&hs->enable_timer, jiffies + msecs_to_jiffies(50));
-+}
-+
-+static void retu_headset_enable_timer(unsigned long arg)
-+{
-+ struct retu_headset *hs = (struct retu_headset *) arg;
-+
-+ retu_set_clear_reg_bits(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 r;
-+
-+ hs = kzalloc(sizeof(*hs), GFP_KERNEL);
-+ if (hs == NULL)
-+ return -ENOMEM;
-+
-+ hs->pdev = pdev;
-+
-+ 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);
-+
-+ r = retu_request_irq(RETU_INT_HOOK, retu_headset_hook_interrupt,
-+ (unsigned long) hs, "hookdet");
-+ if (r != 0) {
-+ dev_err(&pdev->dev, "hookdet IRQ not available\n");
-+ goto err6;
-+ }
-+ retu_disable_irq(RETU_INT_HOOK);
-+ 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);
-+ retu_free_irq(RETU_INT_HOOK);
-+ 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(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(1);
-+ mutex_unlock(&hs->mutex);
-+
-+ return 0;
-+}
-+
-+static struct platform_driver retu_headset_driver = {
-+ .probe = retu_headset_probe,
-+ .remove = retu_headset_remove,
-+ .suspend = retu_headset_suspend,
-+ .resume = retu_headset_resume,
-+ .driver = {
-+ .name = "retu-headset",
-+ },
-+};
-+
-+static int __init retu_headset_init(void)
-+{
-+ int r;
-+
-+ printk(KERN_INFO "Retu/Vilma headset driver initializing\n");
-+
-+ r = platform_driver_register(&retu_headset_driver);
-+ if (r < 0)
-+ return r;
-+
-+ return 0;
-+}
-+
-+static void __exit retu_headset_exit(void)
-+{
-+ platform_driver_unregister(&retu_headset_driver);
-+}
-+
-+module_init(retu_headset_init);
-+module_exit(retu_headset_exit);
-+
-+MODULE_DESCRIPTION("Retu/Vilma headset detection");
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Juha Yrjölä");
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/retu-pwrbutton.c
-@@ -0,0 +1,118 @@
-+/**
-+ * drivers/cbus/retu-pwrbutton.c
-+ *
-+ * Driver for sending retu power button event to input-layer
-+ *
-+ * Copyright (C) 2004 Nokia Corporation
-+ *
-+ * Written by Ari Saastamoinen <ari.saastamoinen@elektrobit.com>
-+ *
-+ * Contact Juha Yrjölä <juha.yrjola@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/timer.h>
-+#include <linux/jiffies.h>
-+#include <linux/bitops.h>
-+
-+#include "retu.h"
-+
-+#define RETU_STATUS_PWRONX (1 << 5)
-+
-+#define PWRBTN_DELAY 20
-+#define PWRBTN_UP 0
-+#define PWRBTN_PRESSED 1
-+
-+static int pwrbtn_state;
-+static struct input_dev *pwrbtn_dev;
-+static struct timer_list pwrbtn_timer;
-+
-+static void retubutton_timer_func(unsigned long arg)
-+{
-+ int state;
-+
-+ if (retu_read_reg(RETU_REG_STATUS) & RETU_STATUS_PWRONX)
-+ state = PWRBTN_UP;
-+ else
-+ state = PWRBTN_PRESSED;
-+
-+ if (pwrbtn_state != state) {
-+ input_report_key(pwrbtn_dev, KEY_POWER, state);
-+ pwrbtn_state = state;
-+ }
-+}
-+
-+/**
-+ * Interrupt function is called whenever power button key is pressed
-+ * or released.
-+ */
-+static void retubutton_irq(unsigned long arg)
-+{
-+ retu_ack_irq(RETU_INT_PWR);
-+ mod_timer(&pwrbtn_timer, jiffies + msecs_to_jiffies(PWRBTN_DELAY));
-+}
-+
-+/**
-+ * Init function.
-+ * Allocates interrupt for power button and registers itself to input layer.
-+ */
-+static int __init retubutton_init(void)
-+{
-+ int irq;
-+
-+ printk(KERN_INFO "Retu power button driver initialized\n");
-+ irq = RETU_INT_PWR;
-+
-+ init_timer(&pwrbtn_timer);
-+ pwrbtn_timer.function = retubutton_timer_func;
-+
-+ if (retu_request_irq(irq, &retubutton_irq, 0, "PwrOnX") < 0) {
-+ printk(KERN_ERR "%s@%s: Cannot allocate irq\n",
-+ __FUNCTION__, __FILE__);
-+ return -EBUSY;
-+ }
-+
-+ pwrbtn_dev = input_allocate_device();
-+ if (!pwrbtn_dev)
-+ return -ENOMEM;
-+
-+ pwrbtn_dev->evbit[0] = BIT_MASK(EV_KEY);
-+ pwrbtn_dev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER);
-+ pwrbtn_dev->name = "retu-pwrbutton";
-+
-+ return input_register_device(pwrbtn_dev);
-+}
-+
-+/**
-+ * Cleanup function which is called when driver is unloaded
-+ */
-+static void __exit retubutton_exit(void)
-+{
-+ retu_free_irq(RETU_INT_PWR);
-+ del_timer_sync(&pwrbtn_timer);
-+ input_unregister_device(pwrbtn_dev);
-+}
-+
-+module_init(retubutton_init);
-+module_exit(retubutton_exit);
-+
-+MODULE_DESCRIPTION("Retu Power Button");
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Ari Saastamoinen");
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/retu-rtc.c
-@@ -0,0 +1,477 @@
-+/**
-+ * 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/module.h>
-+#include <linux/completion.h>
-+#include <linux/platform_device.h>
-+#include <linux/mutex.h>
-+#include <linux/workqueue.h>
-+
-+#include "cbus.h"
-+#include "retu.h"
-+
-+static struct mutex retu_rtc_mutex;
-+static u16 retu_rtc_alarm_expired;
-+static u16 retu_rtc_reset_occurred;
-+
-+static DECLARE_COMPLETION(retu_rtc_exited);
-+static DECLARE_COMPLETION(retu_rtc_sync);
-+
-+static void retu_rtc_barrier(void);
-+
-+static void retu_rtc_device_release(struct device *dev)
-+{
-+ complete(&retu_rtc_exited);
-+}
-+
-+static ssize_t retu_rtc_time_show(struct device *dev, struct device_attribute *attr,
-+ char *buf)
-+{
-+ u16 dsr, hmr, dsr2;
-+
-+ mutex_lock(&retu_rtc_mutex);
-+
-+ do {
-+ u16 dummy;
-+
-+ /*
-+ * Not being in_interrupt() for a retu rtc IRQ, we need to
-+ * read twice for consistency..
-+ */
-+ dummy = retu_read_reg(RETU_REG_RTCDSR);
-+ dsr = retu_read_reg(RETU_REG_RTCDSR);
-+
-+ dummy = retu_read_reg(RETU_REG_RTCHMR);
-+ hmr = retu_read_reg(RETU_REG_RTCHMR);
-+
-+ dummy = retu_read_reg(RETU_REG_RTCDSR);
-+ dsr2 = retu_read_reg(RETU_REG_RTCDSR);
-+ } while ((dsr != dsr2));
-+
-+ mutex_unlock(&retu_rtc_mutex);
-+
-+ /*
-+ * Format a 32-bit date-string for userspace
-+ *
-+ * days | hours | minutes | seconds
-+ *
-+ * 8 bits for each.
-+ *
-+ * This mostly sucks because days and seconds are tracked in RTCDSR
-+ * while hours and minutes are tracked in RTCHMR. And yes, there
-+ * really are no words that can describe an 8 bit day register (or
-+ * rather, none that will be reprinted here).
-+ */
-+ return sprintf(buf, "0x%08x\n", (((dsr >> 8) & 0xff) << 24) |
-+ (((hmr >> 8) & 0x1f) << 16) |
-+ ((hmr & 0x3f) << 8) | (dsr & 0x3f));
-+}
-+
-+static ssize_t retu_rtc_time_store(struct device *dev, struct device_attribute *attr,
-+ const char *buf, size_t count)
-+{
-+ mutex_lock(&retu_rtc_mutex);
-+ /*
-+ * Writing anything to the day counter forces it to 0
-+ * The seconds counter would be cleared by resetting the minutes counter,
-+ * however this won't happen, since we are using the hh:mm counters as
-+ * a set of free running counters and the day counter as a multiple
-+ * overflow holder.
-+ */
-+
-+ /* Reset day counter, but keep Temperature Shutdown state */
-+ retu_write_reg(RETU_REG_RTCDSR,
-+ retu_read_reg(RETU_REG_RTCDSR) & (1 << 6));
-+
-+ mutex_unlock(&retu_rtc_mutex);
-+
-+ return count;
-+}
-+
-+static DEVICE_ATTR(time, S_IRUGO | S_IWUSR, retu_rtc_time_show,
-+ retu_rtc_time_store);
-+
-+
-+static ssize_t retu_rtc_reset_show(struct device *dev, struct device_attribute *attr, char *buf)
-+{
-+ /*
-+ * Returns the status of the rtc
-+ *
-+ * 0: no reset has occurred or the status has been cleared
-+ * 1: a reset has occurred
-+ *
-+ * RTC needs to be reset only when both main battery
-+ * _AND_ backup battery are discharged
-+ */
-+ return sprintf(buf, "%u\n", retu_rtc_reset_occurred);
-+}
-+
-+static void retu_rtc_do_reset(void)
-+{
-+ u16 ccr1;
-+
-+ ccr1 = retu_read_reg(RETU_REG_CC1);
-+ /* RTC in reset */
-+ retu_write_reg(RETU_REG_CC1, ccr1 | 0x0001);
-+ /* RTC in normal operating mode */
-+ retu_write_reg(RETU_REG_CC1, ccr1 & ~0x0001);
-+
-+ retu_rtc_barrier();
-+ /* Disable alarm and RTC WD */
-+ retu_write_reg(RETU_REG_RTCHMAR, 0x7f3f);
-+ /* Set Calibration register to default value */
-+ retu_write_reg(RETU_REG_RTCCALR, 0x00c0);
-+
-+ retu_rtc_alarm_expired = 0;
-+ retu_rtc_reset_occurred = 1;
-+}
-+
-+static ssize_t retu_rtc_reset_store(struct device *dev, struct device_attribute *attr,
-+ const char *buf, size_t count)
-+{
-+ unsigned choice;
-+
-+ if(sscanf(buf, "%u", &choice) != 1)
-+ return count;
-+ mutex_lock(&retu_rtc_mutex);
-+ if (choice == 0)
-+ retu_rtc_reset_occurred = 0;
-+ else if (choice == 1)
-+ retu_rtc_do_reset();
-+ mutex_unlock(&retu_rtc_mutex);
-+ return count;
-+}
-+
-+static DEVICE_ATTR(reset, S_IRUGO | S_IWUSR, retu_rtc_reset_show,
-+ retu_rtc_reset_store);
-+
-+static ssize_t retu_rtc_alarm_show(struct device *dev, struct device_attribute *attr,
-+ char *buf)
-+{
-+ u16 chmar;
-+ ssize_t retval;
-+
-+ mutex_lock(&retu_rtc_mutex);
-+ /*
-+ * Format a 16-bit date-string for userspace
-+ *
-+ * hours | minutes
-+ * 8 bits for each.
-+ */
-+ chmar = retu_read_reg(RETU_REG_RTCHMAR);
-+ /* No shifting needed, only masking unrelated bits */
-+ retval = sprintf(buf, "0x%04x\n", chmar & 0x1f3f);
-+ mutex_unlock(&retu_rtc_mutex);
-+
-+ return retval;
-+}
-+
-+static ssize_t retu_rtc_alarm_store(struct device *dev, struct device_attribute *attr,
-+ const char *buf, size_t count)
-+{
-+ u16 chmar;
-+ unsigned alrm;
-+ unsigned hours;
-+ unsigned minutes;
-+
-+ mutex_lock(&retu_rtc_mutex);
-+
-+ if(sscanf(buf, "%x", &alrm) != 1)
-+ return count;
-+ hours = (alrm >> 8) & 0x001f;
-+ minutes = (alrm >> 0) & 0x003f;
-+ if ((hours < 24 && minutes < 60) || (hours == 24 && minutes == 60)) {
-+ /*
-+ * OK, the time format for the alarm is valid (including the
-+ * disabling values)
-+ */
-+ /* Keeps the RTC watchdog status */
-+ chmar = retu_read_reg(RETU_REG_RTCHMAR) & 0x6000;
-+ chmar |= alrm & 0x1f3f; /* Stores the requested alarm */
-+ retu_rtc_barrier();
-+ retu_write_reg(RETU_REG_RTCHMAR, chmar);
-+ /* If the alarm is being disabled */
-+ if (hours == 24 && minutes == 60) {
-+ /* disable the interrupt */
-+ retu_disable_irq(RETU_INT_RTCA);
-+ retu_rtc_alarm_expired = 0;
-+ } else
-+ /* enable the interrupt */
-+ retu_enable_irq(RETU_INT_RTCA);
-+ }
-+ mutex_unlock(&retu_rtc_mutex);
-+
-+ return count;
-+}
-+
-+static DEVICE_ATTR(alarm, S_IRUGO | S_IWUSR, retu_rtc_alarm_show,
-+ retu_rtc_alarm_store);
-+
-+static ssize_t retu_rtc_alarm_expired_show(struct device *dev, struct device_attribute *attr,
-+ char *buf)
-+{
-+ ssize_t retval;
-+
-+ retval = sprintf(buf, "%u\n", retu_rtc_alarm_expired);
-+
-+ return retval;
-+}
-+
-+static ssize_t retu_rtc_alarm_expired_store(struct device *dev, struct device_attribute *attr,
-+ const char *buf, size_t count)
-+{
-+ retu_rtc_alarm_expired = 0;
-+
-+ return count;
-+}
-+
-+static DEVICE_ATTR(alarm_expired, S_IRUGO | S_IWUSR, retu_rtc_alarm_expired_show,
-+ retu_rtc_alarm_expired_store);
-+
-+
-+static ssize_t retu_rtc_cal_show(struct device *dev, struct device_attribute *attr,
-+ char *buf)
-+{
-+ u16 rtccalr1;
-+
-+ mutex_lock(&retu_rtc_mutex);
-+ rtccalr1 = retu_read_reg(RETU_REG_RTCCALR);
-+ mutex_unlock(&retu_rtc_mutex);
-+
-+ /*
-+ * Shows the status of the Calibration Register.
-+ *
-+ * Default, after power loss: 0x0000
-+ * Default, for R&D: 0x00C0
-+ * Default, for factory: 0x00??
-+ *
-+ */
-+ return sprintf(buf, "0x%04x\n", rtccalr1 & 0x00ff);
-+}
-+
-+static ssize_t retu_rtc_cal_store(struct device *dev, struct device_attribute *attr,
-+ const char *buf, size_t count)
-+{
-+ unsigned calibration_value;
-+
-+ if (sscanf(buf, "%x", &calibration_value) != 1)
-+ return count;
-+
-+ mutex_lock(&retu_rtc_mutex);
-+ retu_rtc_barrier();
-+ retu_write_reg(RETU_REG_RTCCALR, calibration_value & 0x00ff);
-+ mutex_unlock(&retu_rtc_mutex);
-+
-+ return count;
-+}
-+
-+static DEVICE_ATTR(cal, S_IRUGO | S_IWUSR, retu_rtc_cal_show,
-+ retu_rtc_cal_store);
-+
-+static struct platform_device retu_rtc_device;
-+
-+static void retu_rtca_disable(void)
-+{
-+ retu_disable_irq(RETU_INT_RTCA);
-+ retu_rtc_alarm_expired = 1;
-+ retu_rtc_barrier();
-+ retu_write_reg(RETU_REG_RTCHMAR, (24 << 8) | 60);
-+}
-+
-+static void retu_rtca_expired(struct work_struct *unused)
-+{
-+ retu_rtca_disable();
-+ sysfs_notify(&retu_rtc_device.dev.kobj, NULL, "alarm_expired");
-+}
-+
-+DECLARE_WORK(retu_rtca_work, retu_rtca_expired);
-+
-+/*
-+ * RTCHMR RTCHMAR RTCCAL must be accessed within 0.9 s since the seconds
-+ * interrupt has been signaled in the IDR register
-+ */
-+static void retu_rtcs_interrupt(unsigned long unused)
-+{
-+ retu_ack_irq(RETU_INT_RTCS);
-+ complete_all(&retu_rtc_sync);
-+}
-+
-+static void retu_rtca_interrupt(unsigned long unused)
-+{
-+ retu_ack_irq(RETU_INT_RTCA);
-+ schedule_work(&retu_rtca_work);
-+}
-+
-+static int retu_rtc_init_irq(void)
-+{
-+ int ret;
-+
-+ ret = retu_request_irq(RETU_INT_RTCS, retu_rtcs_interrupt, 0, "RTCS");
-+ if (ret != 0)
-+ return ret;
-+ /*
-+ * We will take care of enabling and disabling the interrupt
-+ * elsewhere, so leave it off by default..
-+ */
-+ retu_disable_irq(RETU_INT_RTCS);
-+
-+ ret = retu_request_irq(RETU_INT_RTCA, retu_rtca_interrupt, 0, "RTCA");
-+ if (ret != 0) {
-+ retu_free_irq(RETU_INT_RTCS);
-+ return ret;
-+ }
-+ retu_disable_irq(RETU_INT_RTCA);
-+
-+ return 0;
-+}
-+
-+
-+static int __devinit retu_rtc_probe(struct device *dev)
-+{
-+ int r;
-+
-+ retu_rtc_alarm_expired = retu_read_reg(RETU_REG_IDR) &
-+ (0x1 << RETU_INT_RTCA);
-+
-+ if ((r = retu_rtc_init_irq()) != 0)
-+ return r;
-+
-+ mutex_init(&retu_rtc_mutex);
-+
-+ /* If the calibration register is zero, we've probably lost
-+ * power */
-+ if (retu_read_reg(RETU_REG_RTCCALR) & 0x00ff)
-+ retu_rtc_reset_occurred = 0;
-+ else
-+ retu_rtc_do_reset();
-+
-+ if ((r = device_create_file(dev, &dev_attr_time)) != 0)
-+ return r;
-+ else if ((r = device_create_file(dev, &dev_attr_reset)) != 0)
-+ goto err_unregister_time;
-+ else if ((r = device_create_file(dev, &dev_attr_alarm)) != 0)
-+ goto err_unregister_reset;
-+ else if ((r = device_create_file(dev, &dev_attr_alarm_expired)) != 0)
-+ goto err_unregister_alarm;
-+ else if ((r = device_create_file(dev, &dev_attr_cal)) != 0)
-+ goto err_unregister_alarm_expired;
-+ else
-+ return r;
-+
-+err_unregister_alarm_expired:
-+ device_remove_file(dev, &dev_attr_alarm_expired);
-+err_unregister_alarm:
-+ device_remove_file(dev, &dev_attr_alarm);
-+err_unregister_reset:
-+ device_remove_file(dev, &dev_attr_reset);
-+err_unregister_time:
-+ device_remove_file(dev, &dev_attr_time);
-+ return r;
-+}
-+
-+static int __devexit retu_rtc_remove(struct device *dev)
-+{
-+ retu_disable_irq(RETU_INT_RTCS);
-+ retu_free_irq(RETU_INT_RTCS);
-+ retu_free_irq(RETU_INT_RTCA);
-+ device_remove_file(dev, &dev_attr_cal);
-+ device_remove_file(dev, &dev_attr_alarm_expired);
-+ device_remove_file(dev, &dev_attr_alarm);
-+ device_remove_file(dev, &dev_attr_reset);
-+ device_remove_file(dev, &dev_attr_time);
-+ return 0;
-+}
-+
-+static struct device_driver retu_rtc_driver = {
-+ .name = "retu-rtc",
-+ .bus = &platform_bus_type,
-+ .probe = retu_rtc_probe,
-+ .remove = __devexit_p(retu_rtc_remove),
-+};
-+
-+static struct platform_device retu_rtc_device = {
-+ .name = "retu-rtc",
-+ .id = -1,
-+ .dev = {
-+ .release = retu_rtc_device_release,
-+ },
-+};
-+
-+/* This function provides syncronization with the RTCS interrupt handler */
-+static void retu_rtc_barrier(void)
-+{
-+ INIT_COMPLETION(retu_rtc_sync);
-+ retu_ack_irq(RETU_INT_RTCS);
-+ retu_enable_irq(RETU_INT_RTCS);
-+ wait_for_completion(&retu_rtc_sync);
-+ retu_disable_irq(RETU_INT_RTCS);
-+}
-+
-+static int __init retu_rtc_init(void)
-+{
-+ int ret;
-+
-+ init_completion(&retu_rtc_exited);
-+
-+ if ((ret = driver_register(&retu_rtc_driver)) != 0)
-+ return ret;
-+
-+ if ((ret = platform_device_register(&retu_rtc_device)) != 0)
-+ goto err_unregister_driver;
-+
-+ return 0;
-+
-+err_unregister_driver:
-+ driver_unregister(&retu_rtc_driver);
-+ return ret;
-+}
-+
-+static void __exit retu_rtc_exit(void)
-+{
-+ platform_device_unregister(&retu_rtc_device);
-+ driver_unregister(&retu_rtc_driver);
-+
-+ wait_for_completion(&retu_rtc_exited);
-+}
-+
-+module_init(retu_rtc_init);
-+module_exit(retu_rtc_exit);
-+
-+MODULE_DESCRIPTION("Retu RTC");
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Paul Mundt and Igor Stoppa");
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/retu-user.c
-@@ -0,0 +1,424 @@
-+/**
-+ * drivers/cbus/retu-user.c
-+ *
-+ * Retu user space interface functions
-+ *
-+ * Copyright (C) 2004, 2005 Nokia Corporation
-+ *
-+ * Written by 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/types.h>
-+#include <linux/kernel.h>
-+#include <linux/interrupt.h>
-+#include <linux/module.h>
-+#include <linux/init.h>
-+#include <linux/fs.h>
-+#include <linux/miscdevice.h>
-+#include <linux/poll.h>
-+#include <linux/list.h>
-+#include <linux/spinlock.h>
-+#include <linux/sched.h>
-+#include <linux/mutex.h>
-+#include <linux/slab.h>
-+
-+#include <asm/uaccess.h>
-+
-+#include "retu.h"
-+
-+#include "user_retu_tahvo.h"
-+
-+/* Maximum size of IRQ node buffer/pool */
-+#define RETU_MAX_IRQ_BUF_LEN 16
-+
-+#define PFX "retu-user: "
-+
-+/* Bitmap for marking the interrupt sources as having the handlers */
-+static u32 retu_irq_bits;
-+
-+/* For allowing only one user process to subscribe to the retu interrupts */
-+static struct file *retu_irq_subscr = NULL;
-+
-+/* For poll and IRQ passing */
-+struct retu_irq {
-+ u32 id;
-+ struct list_head node;
-+};
-+
-+static spinlock_t retu_irqs_lock;
-+static struct retu_irq *retu_irq_block;
-+static LIST_HEAD(retu_irqs);
-+static LIST_HEAD(retu_irqs_reserve);
-+
-+/* Wait queue - used when user wants to read the device */
-+DECLARE_WAIT_QUEUE_HEAD(retu_user_waitqueue);
-+
-+/* Semaphore to protect irq subscription sequence */
-+static struct mutex retu_mutex;
-+
-+/* This array specifies RETU register types (read/write/toggle) */
-+static const u8 retu_access_bits[] = {
-+ 1,
-+ 4,
-+ 3,
-+ 3,
-+ 1,
-+ 3,
-+ 3,
-+ 0,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 4,
-+ 4,
-+ 3,
-+ 0,
-+ 0,
-+ 0,
-+ 0,
-+ 1,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3
-+};
-+
-+/*
-+ * The handler for all RETU interrupts.
-+ *
-+ * arg is the interrupt source in RETU.
-+ */
-+static void retu_user_irq_handler(unsigned long arg)
-+{
-+ struct retu_irq *irq;
-+
-+ retu_ack_irq(arg);
-+
-+ spin_lock(&retu_irqs_lock);
-+ if (list_empty(&retu_irqs_reserve)) {
-+ spin_unlock(&retu_irqs_lock);
-+ return;
-+ }
-+ irq = list_entry((&retu_irqs_reserve)->next, struct retu_irq, node);
-+ irq->id = arg;
-+ list_move_tail(&irq->node, &retu_irqs);
-+ spin_unlock(&retu_irqs_lock);
-+
-+ /* wake up waiting thread */
-+ wake_up(&retu_user_waitqueue);
-+}
-+
-+/*
-+ * This routine sets up the interrupt handler and marks an interrupt source
-+ * in RETU as a candidate for signal delivery to the user process.
-+ */
-+static int retu_user_subscribe_to_irq(int id, struct file *filp)
-+{
-+ int ret;
-+
-+ mutex_lock(&retu_mutex);
-+ if ((retu_irq_subscr != NULL) && (retu_irq_subscr != filp)) {
-+ mutex_unlock(&retu_mutex);
-+ return -EBUSY;
-+ }
-+ /* Store the file pointer of the first user process registering IRQs */
-+ retu_irq_subscr = filp;
-+ mutex_unlock(&retu_mutex);
-+
-+ if (retu_irq_bits & (1 << id))
-+ return 0;
-+
-+ ret = retu_request_irq(id, retu_user_irq_handler, id, "");
-+ if (ret < 0)
-+ return ret;
-+
-+ /* Mark that this interrupt has a handler */
-+ retu_irq_bits |= 1 << id;
-+
-+ return 0;
-+}
-+
-+/*
-+ * Unregisters all RETU interrupt handlers.
-+ */
-+static void retu_unreg_irq_handlers(void)
-+{
-+ int id;
-+
-+ if (!retu_irq_bits)
-+ return;
-+
-+ for (id = 0; id < MAX_RETU_IRQ_HANDLERS; id++)
-+ if (retu_irq_bits & (1 << id))
-+ retu_free_irq(id);
-+
-+ retu_irq_bits = 0;
-+}
-+
-+/*
-+ * Write to RETU register.
-+ * Returns 0 upon success, a negative error value otherwise.
-+ */
-+static int retu_user_write_with_mask(u32 field, u16 value)
-+{
-+ u32 mask;
-+ u32 reg;
-+ u_short tmp;
-+ unsigned long flags;
-+
-+ mask = MASK(field);
-+ reg = REG(field);
-+
-+ /* Detect bad mask and reg */
-+ if (mask == 0 || reg > RETU_REG_MAX ||
-+ retu_access_bits[reg] == READ_ONLY) {
-+ printk(KERN_ERR PFX "invalid arguments (reg=%#x, mask=%#x)\n",
-+ reg, mask);
-+ return -EINVAL;
-+ }
-+
-+ /* Justify value according to mask */
-+ while (!(mask & 1)) {
-+ value = value << 1;
-+ mask = mask >> 1;
-+ }
-+
-+ spin_lock_irqsave(&retu_lock, flags);
-+ if (retu_access_bits[reg] == TOGGLE) {
-+ /* No need to detect previous content of register */
-+ tmp = 0;
-+ } else {
-+ /* Read current value of register */
-+ tmp = retu_read_reg(reg);
-+ }
-+
-+ /* Generate new value */
-+ tmp = (tmp & ~MASK(field)) | (value & MASK(field));
-+ /* Write data to RETU */
-+ retu_write_reg(reg, tmp);
-+ spin_unlock_irqrestore(&retu_lock, flags);
-+
-+ return 0;
-+}
-+
-+/*
-+ * Read RETU register.
-+ */
-+static u32 retu_user_read_with_mask(u32 field)
-+{
-+ u_short value;
-+ u32 mask, reg;
-+
-+ mask = MASK(field);
-+ reg = REG(field);
-+
-+ /* Detect bad mask and reg */
-+ if (mask == 0 || reg > RETU_REG_MAX) {
-+ printk(KERN_ERR PFX "invalid arguments (reg=%#x, mask=%#x)\n",
-+ reg, mask);
-+ return -EINVAL;
-+ }
-+
-+ /* Read the register */
-+ value = retu_read_reg(reg) & mask;
-+
-+ /* Right justify value */
-+ while (!(mask & 1)) {
-+ value = value >> 1;
-+ mask = mask >> 1;
-+ }
-+
-+ return value;
-+}
-+
-+/*
-+ * Close device
-+ */
-+static int retu_close(struct inode *inode, struct file *filp)
-+{
-+ /* Unregister all interrupts that have been registered */
-+ if (retu_irq_subscr == filp) {
-+ retu_unreg_irq_handlers();
-+ retu_irq_subscr = NULL;
-+ }
-+
-+ return 0;
-+}
-+
-+/*
-+ * Device control (ioctl)
-+ */
-+static long retu_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-+{
-+ struct retu_tahvo_write_parms par;
-+ int ret;
-+
-+ switch (cmd) {
-+ case URT_IOCT_IRQ_SUBSCR:
-+ return retu_user_subscribe_to_irq(arg, filp);
-+ case RETU_IOCH_READ:
-+ return retu_user_read_with_mask(arg);
-+ case RETU_IOCX_WRITE:
-+ ret = copy_from_user(&par, (void __user *) arg, sizeof(par));
-+ if (ret)
-+ printk(KERN_ERR "copy_from_user failed: %d\n", ret);
-+ par.result = retu_user_write_with_mask(par.field, par.value);
-+ ret = copy_to_user((void __user *) arg, &par, sizeof(par));
-+ if (ret)
-+ printk(KERN_ERR "copy_to_user failed: %d\n", ret);
-+ break;
-+ case RETU_IOCH_ADC_READ:
-+ return retu_read_adc(arg);
-+ default:
-+ return -ENOIOCTLCMD;
-+ }
-+ return 0;
-+}
-+
-+/*
-+ * Read from device
-+ */
-+static ssize_t retu_read(struct file *filp, char *buf, size_t count,
-+ loff_t * offp)
-+{
-+ struct retu_irq *irq;
-+
-+ u32 nr, i;
-+
-+ /* read not permitted if neither filp nor anyone has registered IRQs */
-+ if (retu_irq_subscr != filp)
-+ return -EPERM;
-+
-+ if ((count < sizeof(u32)) || ((count % sizeof(u32)) != 0))
-+ return -EINVAL;
-+
-+ nr = count / sizeof(u32);
-+
-+ for (i = 0; i < nr; i++) {
-+ unsigned long flags;
-+ u32 irq_id;
-+ int ret;
-+
-+ ret = wait_event_interruptible(retu_user_waitqueue,
-+ !list_empty(&retu_irqs));
-+ if (ret < 0)
-+ return ret;
-+
-+ spin_lock_irqsave(&retu_irqs_lock, flags);
-+ irq = list_entry((&retu_irqs)->next, struct retu_irq, node);
-+ irq_id = irq->id;
-+ list_move(&irq->node, &retu_irqs_reserve);
-+ spin_unlock_irqrestore(&retu_irqs_lock, flags);
-+
-+ ret = copy_to_user(buf + i * sizeof(irq_id), &irq_id,
-+ sizeof(irq_id));
-+ if (ret)
-+ printk(KERN_ERR "copy_to_user failed: %d\n", ret);
-+ }
-+
-+ return count;
-+}
-+
-+/*
-+ * Poll method
-+ */
-+static unsigned retu_poll(struct file *filp, struct poll_table_struct *pt)
-+{
-+ if (!list_empty(&retu_irqs))
-+ return POLLIN;
-+
-+ poll_wait(filp, &retu_user_waitqueue, pt);
-+
-+ if (!list_empty(&retu_irqs))
-+ return POLLIN;
-+ else
-+ return 0;
-+}
-+
-+static struct file_operations retu_user_fileops = {
-+ .owner = THIS_MODULE,
-+ .unlocked_ioctl = retu_ioctl,
-+ .read = retu_read,
-+ .release = retu_close,
-+ .poll = retu_poll
-+};
-+
-+static struct miscdevice retu_device = {
-+ .minor = MISC_DYNAMIC_MINOR,
-+ .name = "retu",
-+ .fops = &retu_user_fileops
-+};
-+
-+/*
-+ * Initialization
-+ *
-+ * @return 0 if successful, error value otherwise.
-+ */
-+int retu_user_init(void)
-+{
-+ struct retu_irq *irq;
-+ int res, i;
-+
-+ irq = kmalloc(sizeof(*irq) * RETU_MAX_IRQ_BUF_LEN, GFP_KERNEL);
-+ if (irq == NULL) {
-+ printk(KERN_ERR PFX "kmalloc failed\n");
-+ return -ENOMEM;
-+ }
-+ memset(irq, 0, sizeof(*irq) * RETU_MAX_IRQ_BUF_LEN);
-+ for (i = 0; i < RETU_MAX_IRQ_BUF_LEN; i++)
-+ list_add(&irq[i].node, &retu_irqs_reserve);
-+
-+ retu_irq_block = irq;
-+
-+ spin_lock_init(&retu_irqs_lock);
-+ mutex_init(&retu_mutex);
-+
-+ /* Request a misc device */
-+ res = misc_register(&retu_device);
-+ if (res < 0) {
-+ printk(KERN_ERR PFX "unable to register misc device for %s\n",
-+ retu_device.name);
-+ kfree(irq);
-+ return res;
-+ }
-+
-+ return 0;
-+}
-+
-+/*
-+ * Cleanup.
-+ */
-+void retu_user_cleanup(void)
-+{
-+ /* Unregister our misc device */
-+ misc_deregister(&retu_device);
-+ /* Unregister and disable all RETU interrupts used by this module */
-+ retu_unreg_irq_handlers();
-+ kfree(retu_irq_block);
-+}
-+
-+MODULE_DESCRIPTION("Retu ASIC user space functions");
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Mikko Ylinen");
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/retu-wdt.c
-@@ -0,0 +1,387 @@
-+/**
-+ * 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/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/slab.h>
-+
-+#include <linux/completion.h>
-+#include <linux/errno.h>
-+#include <linux/moduleparam.h>
-+#include <linux/platform_device.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 struct completion retu_wdt_completion;
-+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)
-+{
-+ retu_write_reg(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(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 __init 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;
-+}
-+late_initcall(retu_wdt_ping);
-+
-+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 __devinit retu_wdt_probe(struct device *dev)
-+{
-+ struct retu_wdt_dev *wdev;
-+ int ret;
-+
-+ wdev = kzalloc(sizeof(struct retu_wdt_dev), GFP_KERNEL);
-+ if (!wdev)
-+ return -ENOMEM;
-+
-+ wdev->users = 0;
-+
-+ ret = device_create_file(dev, &dev_attr_period);
-+ if (ret) {
-+ printk(KERN_ERR "retu_wdt_probe: Error creating "
-+ "sys device file: period\n");
-+ goto free1;
-+ }
-+
-+ ret = device_create_file(dev, &dev_attr_counter);
-+ if (ret) {
-+ printk(KERN_ERR "retu_wdt_probe: Error creating "
-+ "sys device file: counter\n");
-+ goto free2;
-+ }
-+
-+ dev_set_drvdata(dev, wdev);
-+ retu_wdt = wdev;
-+ wdev->retu_wdt_miscdev.parent = 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);
-+
-+ /* Kick the watchdog for kernel booting to finish */
-+ retu_modify_counter(RETU_WDT_MAX_TIMER);
-+
-+ return 0;
-+
-+free3:
-+ device_remove_file(dev, &dev_attr_counter);
-+
-+free2:
-+ device_remove_file(dev, &dev_attr_period);
-+free1:
-+ kfree(wdev);
-+
-+ return ret;
-+}
-+
-+static int __devexit retu_wdt_remove(struct device *dev)
-+{
-+ struct retu_wdt_dev *wdev;
-+
-+ wdev = dev_get_drvdata(dev);
-+ misc_deregister(&(wdev->retu_wdt_miscdev));
-+ device_remove_file(dev, &dev_attr_period);
-+ device_remove_file(dev, &dev_attr_counter);
-+ kfree(wdev);
-+
-+ return 0;
-+}
-+
-+static void retu_wdt_device_release(struct device *dev)
-+{
-+ complete(&retu_wdt_completion);
-+}
-+
-+static struct platform_device retu_wdt_device = {
-+ .name = "retu-watchdog",
-+ .id = -1,
-+ .dev = {
-+ .release = retu_wdt_device_release,
-+ },
-+};
-+
-+static struct device_driver retu_wdt_driver = {
-+ .name = "retu-watchdog",
-+ .bus = &platform_bus_type,
-+ .probe = retu_wdt_probe,
-+ .remove = __devexit_p(retu_wdt_remove),
-+};
-+
-+static int __init retu_wdt_init(void)
-+{
-+ int ret;
-+
-+ init_completion(&retu_wdt_completion);
-+
-+ ret = driver_register(&retu_wdt_driver);
-+ if (ret)
-+ return ret;
-+
-+ ret = platform_device_register(&retu_wdt_device);
-+ if (ret)
-+ goto exit1;
-+
-+ /* passed as module parameter? */
-+ ret = retu_modify_counter(counter_param);
-+ if (ret == -EINVAL) {
-+ ret = retu_modify_counter(RETU_WDT_DEFAULT_TIMER);
-+ printk(KERN_INFO
-+ "retu_wdt_init: Intializing to default value\n");
-+ }
-+
-+ printk(KERN_INFO "Retu watchdog driver initialized\n");
-+ return ret;
-+
-+exit1:
-+ driver_unregister(&retu_wdt_driver);
-+ wait_for_completion(&retu_wdt_completion);
-+
-+ return ret;
-+}
-+
-+static void __exit retu_wdt_exit(void)
-+{
-+ platform_device_unregister(&retu_wdt_device);
-+ driver_unregister(&retu_wdt_driver);
-+
-+ wait_for_completion(&retu_wdt_completion);
-+}
-+
-+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");
-+
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/tahvo.c
-@@ -0,0 +1,443 @@
-+/**
-+ * 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_irq_pin;
-+static int tahvo_is_betty;
-+
-+static struct tasklet_struct tahvo_tasklet;
-+spinlock_t tahvo_lock = SPIN_LOCK_UNLOCKED;
-+
-+static struct completion device_release;
-+
-+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];
-+
-+/**
-+ * 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(int reg)
-+{
-+ BUG_ON(!tahvo_initialized);
-+ return cbus_read_reg(cbus_host, TAHVO_ID, 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(int reg, u16 val)
-+{
-+ BUG_ON(!tahvo_initialized);
-+ cbus_write_reg(cbus_host, TAHVO_ID, reg, val);
-+}
-+
-+/**
-+ * 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(int 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);
-+}
-+
-+/*
-+ * 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);
-+}
-+
-+/*
-+ * Acknowledge given TAHVO interrupt
-+ */
-+void tahvo_ack_irq(int id)
-+{
-+ tahvo_write_reg(TAHVO_REG_IDR, 1 << id);
-+}
-+
-+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;
-+}
-+
-+int tahvo_get_max_backlight_level(void)
-+{
-+ if (tahvo_7bit_backlight)
-+ return 0x7f;
-+ else
-+ return 0x0f;
-+}
-+
-+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);
-+}
-+
-+/*
-+ * 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;
-+}
-+
-+/*
-+ * 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;
-+}
-+
-+/**
-+ * 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 __devinit tahvo_probe(struct device *dev)
-+{
-+ int rev, id, ret;
-+
-+ /* 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 {
-+ printk(KERN_ERR "Tahvo/Betty chip not found");
-+ return -ENODEV;
-+ }
-+
-+ printk(KERN_INFO "%s v%d.%d found\n", tahvo_is_betty ? "Betty" : "Tahvo",
-+ (rev >> 4) & 0x0f, rev & 0x0f);
-+
-+ /* REVISIT: Pass these from board-*.c files in platform_data */
-+ if (machine_is_nokia770()) {
-+ tahvo_irq_pin = 40;
-+ } else if (machine_is_nokia_n800() || machine_is_nokia_n810() ||
-+ machine_is_nokia_n810_wimax()) {
-+ tahvo_irq_pin = 111;
-+ } else {
-+ printk(KERN_ERR "cbus: Unsupported board for tahvo\n");
-+ return -ENODEV;
-+ }
-+
-+ if ((ret = gpio_request(tahvo_irq_pin, "TAHVO irq")) < 0) {
-+ printk(KERN_ERR PFX "Unable to reserve IRQ GPIO\n");
-+ return ret;
-+ }
-+
-+ /* Set the pin as input */
-+ gpio_direction_input(tahvo_irq_pin);
-+
-+ /* Rising edge triggers the IRQ */
-+ set_irq_type(gpio_to_irq(tahvo_irq_pin), IRQ_TYPE_EDGE_RISING);
-+
-+ /* Mask all TAHVO interrupts */
-+ tahvo_write_reg(TAHVO_REG_IMR, 0xffff);
-+
-+ ret = request_irq(gpio_to_irq(tahvo_irq_pin), tahvo_irq_handler, 0,
-+ "tahvo", 0);
-+ if (ret < 0) {
-+ printk(KERN_ERR PFX "Unable to register IRQ handler\n");
-+ gpio_free(tahvo_irq_pin);
-+ return ret;
-+ }
-+#ifdef CONFIG_CBUS_TAHVO_USER
-+ /* Initialize user-space interface */
-+ if (tahvo_user_init() < 0) {
-+ printk(KERN_ERR "Unable to initialize driver\n");
-+ free_irq(gpio_to_irq(tahvo_irq_pin), 0);
-+ gpio_free(tahvo_irq_pin);
-+ return ret;
-+ }
-+#endif
-+ return 0;
-+}
-+
-+static int tahvo_remove(struct device *dev)
-+{
-+#ifdef CONFIG_CBUS_TAHVO_USER
-+ tahvo_user_cleanup();
-+#endif
-+ /* Mask all TAHVO interrupts */
-+ tahvo_write_reg(TAHVO_REG_IMR, 0xffff);
-+ free_irq(gpio_to_irq(tahvo_irq_pin), 0);
-+ gpio_free(tahvo_irq_pin);
-+ tasklet_kill(&tahvo_tasklet);
-+
-+ return 0;
-+}
-+
-+static void tahvo_device_release(struct device *dev)
-+{
-+ complete(&device_release);
-+}
-+
-+static struct device_driver tahvo_driver = {
-+ .name = "tahvo",
-+ .bus = &platform_bus_type,
-+ .probe = tahvo_probe,
-+ .remove = tahvo_remove,
-+};
-+
-+static struct platform_device tahvo_device = {
-+ .name = "tahvo",
-+ .id = -1,
-+ .dev = {
-+ .release = tahvo_device_release,
-+ }
-+};
-+
-+/**
-+ * tahvo_init - initialise Tahvo driver
-+ *
-+ * Initialise the Tahvo driver and return 0 if everything worked ok
-+ */
-+static int __init tahvo_init(void)
-+{
-+ int ret = 0;
-+
-+ printk(KERN_INFO "Tahvo/Betty driver initialising\n");
-+
-+ init_completion(&device_release);
-+
-+ if ((ret = driver_register(&tahvo_driver)) < 0)
-+ return ret;
-+
-+ if ((ret = platform_device_register(&tahvo_device)) < 0) {
-+ driver_unregister(&tahvo_driver);
-+ return ret;
-+ }
-+ return 0;
-+}
-+
-+/*
-+ * Cleanup
-+ */
-+static void __exit tahvo_exit(void)
-+{
-+ platform_device_unregister(&tahvo_device);
-+ driver_unregister(&tahvo_driver);
-+ wait_for_completion(&device_release);
-+}
-+
-+EXPORT_SYMBOL(tahvo_request_irq);
-+EXPORT_SYMBOL(tahvo_free_irq);
-+EXPORT_SYMBOL(tahvo_enable_irq);
-+EXPORT_SYMBOL(tahvo_disable_irq);
-+EXPORT_SYMBOL(tahvo_ack_irq);
-+EXPORT_SYMBOL(tahvo_read_reg);
-+EXPORT_SYMBOL(tahvo_write_reg);
-+EXPORT_SYMBOL(tahvo_get_backlight_level);
-+EXPORT_SYMBOL(tahvo_get_max_backlight_level);
-+EXPORT_SYMBOL(tahvo_set_backlight_level);
-+
-+subsys_initcall(tahvo_init);
-+module_exit(tahvo_exit);
-+
-+MODULE_DESCRIPTION("Tahvo ASIC control");
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Juha Yrjölä, David Weinehall, and Mikko Ylinen");
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/tahvo.h
-@@ -0,0 +1,61 @@
-+/*
-+ * 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_read_reg(int reg);
-+void tahvo_write_reg(int reg, u16 val);
-+void tahvo_set_clear_reg_bits(int 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);
-+
-+#ifdef CONFIG_CBUS_TAHVO_USER
-+int tahvo_user_init(void);
-+void tahvo_user_cleanup(void);
-+#endif
-+
-+extern spinlock_t tahvo_lock;
-+
-+#endif /* __DRIVERS_CBUS_TAHVO_H */
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/tahvo-usb.c
-@@ -0,0 +1,788 @@
-+/**
-+ * 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) {
-+ 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);
-+ }
-+ omap_writew(DRIVER_SWITCH, OTG_IRQ_SRC);
-+ } else
-+ return IRQ_NONE;
-+
-+ return IRQ_HANDLED;
-+
-+}
-+
-+static int tahvo_omap_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 omap_otg_probe(struct platform_device *pdev)
-+{
-+ int ret, err;
-+
-+ tahvo_otg_dev = pdev;
-+ ret = tahvo_omap_otg_init();
-+ if (ret != 0) {
-+ printk(KERN_ERR "tahvo-usb: omap_otg_init failed\n");
-+ return ret;
-+ }
-+
-+ err = request_irq(tahvo_otg_dev->resource[1].start,
-+ omap_otg_irq, IRQF_DISABLED, DRIVER_NAME,
-+ &tahvo_usb_device);
-+
-+ return err;
-+}
-+
-+static int omap_otg_remove(struct platform_device *pdev)
-+{
-+ free_irq(tahvo_otg_dev->resource[1].start, &tahvo_usb_device);
-+ tahvo_otg_dev = NULL;
-+
-+ return 0;
-+}
-+
-+static struct platform_driver omap_otg_driver = {
-+ .probe = omap_otg_probe,
-+ .remove = omap_otg_remove,
-+ .driver = {
-+ .name = "omap_otg",
-+ }
-+};
-+
-+/*
-+ * ---------------------------------------------------------------------------
-+ * 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 platform_device *pdev = to_platform_device(device);
-+ struct tahvo_usb *tu = platform_get_drvdata(pdev);
-+ 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_omap_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_omap_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 platform_device *pdev = to_platform_device(device);
-+ struct tahvo_usb *tu = platform_get_drvdata(pdev);
-+
-+ 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 platform_device *pdev = to_platform_device(device);
-+ struct tahvo_usb *tu = platform_get_drvdata(pdev);
-+ 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 tahvo_usb_probe(struct platform_device *pdev)
-+{
-+ struct tahvo_usb *tu;
-+ int ret;
-+
-+ dev_dbg(&pdev->dev, "probe\n");
-+
-+ /* Create driver data */
-+ tu = kmalloc(sizeof(*tu), GFP_KERNEL);
-+ if (!tu)
-+ return -ENOMEM;
-+ memset(tu, 0, sizeof(*tu));
-+ tu->pt_dev = pdev;
-+#ifdef CONFIG_USB_OTG
-+ /* Default mode */
-+#ifdef CONFIG_CBUS_TAHVO_USB_HOST_BY_DEFAULT
-+ tu->tahvo_mode = TAHVO_MODE_HOST;
-+#else
-+ tu->tahvo_mode = TAHVO_MODE_PERIPHERAL;
-+#endif
-+#endif
-+
-+ 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(&pdev->dev, &dev_attr_vbus_state);
-+#ifdef CONFIG_USB_OTG
-+ ret |= device_create_file(&pdev->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;
-+ }
-+
-+ platform_set_drvdata(pdev, 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 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 = {
-+ .probe = tahvo_usb_probe,
-+ .remove = tahvo_usb_remove,
-+ .driver = {
-+ .name = "tahvo-usb",
-+ }
-+};
-+
-+static struct platform_device tahvo_usb_device = {
-+ .name = "tahvo-usb",
-+ .id = -1,
-+};
-+
-+static int __init tahvo_usb_init(void)
-+{
-+ int ret = 0;
-+
-+ printk(KERN_INFO "Tahvo USB transceiver driver initializing\n");
-+
-+ ret = platform_driver_register(&tahvo_usb_driver);
-+ if (ret)
-+ return ret;
-+ ret = platform_driver_register(&omap_otg_driver);
-+ if (ret) {
-+ platform_driver_unregister(&tahvo_usb_driver);
-+ return ret;
-+ }
-+
-+ ret = platform_device_register(&tahvo_usb_device);
-+ if (ret) {
-+ platform_driver_unregister(&omap_otg_driver);
-+ platform_driver_unregister(&tahvo_usb_driver);
-+ return ret;
-+ }
-+
-+ return 0;
-+}
-+subsys_initcall(tahvo_usb_init);
-+
-+static void __exit tahvo_usb_exit(void)
-+{
-+ platform_device_unregister(&tahvo_usb_device);
-+ 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");
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/tahvo-user.c
-@@ -0,0 +1,406 @@
-+/**
-+ * drivers/cbus/tahvo-user.c
-+ *
-+ * Tahvo user space interface functions
-+ *
-+ * Copyright (C) 2004, 2005 Nokia Corporation
-+ *
-+ * Written by 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/types.h>
-+#include <linux/kernel.h>
-+#include <linux/interrupt.h>
-+#include <linux/module.h>
-+#include <linux/init.h>
-+#include <linux/fs.h>
-+#include <linux/miscdevice.h>
-+#include <linux/poll.h>
-+#include <linux/list.h>
-+#include <linux/spinlock.h>
-+#include <linux/sched.h>
-+#include <linux/mutex.h>
-+#include <linux/slab.h>
-+
-+#include <asm/uaccess.h>
-+
-+#include "tahvo.h"
-+
-+#include "user_retu_tahvo.h"
-+
-+/* Maximum size of IRQ node buffer/pool */
-+#define TAHVO_MAX_IRQ_BUF_LEN 16
-+
-+#define PFX "tahvo-user: "
-+
-+/* Bitmap for marking the interrupt sources as having the handlers */
-+static u32 tahvo_irq_bits;
-+
-+/* For allowing only one user process to subscribe to the tahvo interrupts */
-+static struct file *tahvo_irq_subscr = NULL;
-+
-+/* For poll and IRQ passing */
-+struct tahvo_irq {
-+ u32 id;
-+ struct list_head node;
-+};
-+
-+static spinlock_t tahvo_irqs_lock;
-+static struct tahvo_irq *tahvo_irq_block;
-+static LIST_HEAD(tahvo_irqs);
-+static LIST_HEAD(tahvo_irqs_reserve);
-+
-+/* Wait queue - used when user wants to read the device */
-+DECLARE_WAIT_QUEUE_HEAD(tahvo_user_waitqueue);
-+
-+/* Semaphore to protect irq subscription sequence */
-+static struct mutex tahvo_mutex;
-+
-+/* This array specifies TAHVO register types (read/write/toggle) */
-+static const u8 tahvo_access_bits[] = {
-+ 1,
-+ 4,
-+ 1,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 3,
-+ 1
-+};
-+
-+/*
-+ * The handler for all TAHVO interrupts.
-+ *
-+ * arg is the interrupt source in TAHVO.
-+ */
-+static void tahvo_user_irq_handler(unsigned long arg)
-+{
-+ struct tahvo_irq *irq;
-+
-+ /* user has to re-enable the interrupt once ready
-+ * for receiving them again */
-+ tahvo_disable_irq(arg);
-+ tahvo_ack_irq(arg);
-+
-+ spin_lock(&tahvo_irqs_lock);
-+ if (list_empty(&tahvo_irqs_reserve)) {
-+ spin_unlock(&tahvo_irqs_lock);
-+ return;
-+ }
-+ irq = list_entry((&tahvo_irqs_reserve)->next, struct tahvo_irq, node);
-+ irq->id = arg;
-+ list_move_tail(&irq->node, &tahvo_irqs);
-+ spin_unlock(&tahvo_irqs_lock);
-+
-+ /* wake up waiting thread */
-+ wake_up(&tahvo_user_waitqueue);
-+}
-+
-+/*
-+ * This routine sets up the interrupt handler and marks an interrupt source
-+ * in TAHVO as a candidate for signal delivery to the user process.
-+ */
-+static int tahvo_user_subscribe_to_irq(int id, struct file *filp)
-+{
-+ int ret;
-+
-+ mutex_lock(&tahvo_mutex);
-+ if ((tahvo_irq_subscr != NULL) && (tahvo_irq_subscr != filp)) {
-+ mutex_unlock(&tahvo_mutex);
-+ return -EBUSY;
-+ }
-+ /* Store the file pointer of the first user process registering IRQs */
-+ tahvo_irq_subscr = filp;
-+ mutex_unlock(&tahvo_mutex);
-+
-+ if (tahvo_irq_bits & (1 << id))
-+ return 0;
-+
-+ ret = tahvo_request_irq(id, tahvo_user_irq_handler, id, "");
-+ if (ret < 0)
-+ return ret;
-+
-+ /* Mark that this interrupt has a handler */
-+ tahvo_irq_bits |= 1 << id;
-+
-+ return 0;
-+}
-+
-+/*
-+ * Unregister all TAHVO interrupt handlers
-+ */
-+static void tahvo_unreg_irq_handlers(void)
-+{
-+ int id;
-+
-+ if (!tahvo_irq_bits)
-+ return;
-+
-+ for (id = 0; id < MAX_TAHVO_IRQ_HANDLERS; id++)
-+ if (tahvo_irq_bits & (1 << id))
-+ tahvo_free_irq(id);
-+
-+ tahvo_irq_bits = 0;
-+}
-+
-+/*
-+ * Write to TAHVO register.
-+ * Returns 0 upon success, a negative error value otherwise.
-+ */
-+static int tahvo_user_write_with_mask(u32 field, u16 value)
-+{
-+ u32 mask;
-+ u32 reg;
-+ u_short tmp;
-+ unsigned long flags;
-+
-+ mask = MASK(field);
-+ reg = REG(field);
-+
-+ /* Detect bad mask and reg */
-+ if (mask == 0 || reg > TAHVO_REG_MAX ||
-+ tahvo_access_bits[reg] == READ_ONLY) {
-+ printk(KERN_ERR PFX "invalid arguments (reg=%#x, mask=%#x)\n",
-+ reg, mask);
-+ return -EINVAL;
-+ }
-+
-+ /* Justify value according to mask */
-+ while (!(mask & 1)) {
-+ value = value << 1;
-+ mask = mask >> 1;
-+ }
-+
-+ spin_lock_irqsave(&tahvo_lock, flags);
-+ if (tahvo_access_bits[reg] == TOGGLE) {
-+ /* No need to detect previous content of register */
-+ tmp = 0;
-+ } else {
-+ /* Read current value of register */
-+ tmp = tahvo_read_reg(reg);
-+ }
-+ /* Generate a new value */
-+ tmp = (tmp & ~MASK(field)) | (value & MASK(field));
-+ /* Write data to TAHVO */
-+ tahvo_write_reg(reg, tmp);
-+ spin_unlock_irqrestore(&tahvo_lock, flags);
-+
-+ return 0;
-+}
-+
-+/*
-+ * Read TAHVO register.
-+ */
-+static u32 tahvo_user_read_with_mask(u32 field)
-+{
-+ u_short value;
-+ u32 mask, reg;
-+
-+ mask = MASK(field);
-+ reg = REG(field);
-+
-+ /* Detect bad mask and reg */
-+ if (mask == 0 || reg > TAHVO_REG_MAX) {
-+ printk(KERN_ERR PFX "invalid arguments (reg=%#x, mask=%#x)\n",
-+ reg, mask);
-+ return -EINVAL;
-+ }
-+
-+ /* Read the register */
-+ value = tahvo_read_reg(reg) & mask;
-+
-+ /* Right justify value */
-+ while (!(mask & 1)) {
-+ value = value >> 1;
-+ mask = mask >> 1;
-+ }
-+
-+ return value;
-+}
-+
-+/*
-+ * Close device
-+ */
-+static int tahvo_close(struct inode *inode, struct file *filp)
-+{
-+ /* Unregister all interrupts that have been registered */
-+ if (tahvo_irq_subscr == filp) {
-+ tahvo_unreg_irq_handlers();
-+ tahvo_irq_subscr = NULL;
-+ }
-+
-+ return 0;
-+}
-+
-+/*
-+ * Device control (ioctl)
-+ */
-+static long tahvo_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-+{
-+ struct retu_tahvo_write_parms par;
-+ int ret;
-+
-+ switch (cmd) {
-+ case URT_IOCT_IRQ_SUBSCR:
-+ return tahvo_user_subscribe_to_irq(arg, filp);
-+ case TAHVO_IOCH_READ:
-+ return tahvo_user_read_with_mask(arg);
-+ case TAHVO_IOCX_WRITE:
-+ ret = copy_from_user(&par, (void __user *) arg, sizeof(par));
-+ if (ret)
-+ printk(KERN_ERR "copy_from_user failed: %d\n", ret);
-+ par.result = tahvo_user_write_with_mask(par.field, par.value);
-+ ret = copy_to_user((void __user *) arg, &par, sizeof(par));
-+ if (ret)
-+ printk(KERN_ERR "copy_to_user failed: %d\n", ret);
-+ break;
-+ default:
-+ return -ENOIOCTLCMD;
-+ }
-+ return 0;
-+}
-+
-+/*
-+ * Read from device
-+ */
-+static ssize_t tahvo_read(struct file *filp, char *buf, size_t count,
-+ loff_t * offp)
-+{
-+ struct tahvo_irq *irq;
-+
-+ u32 nr, i;
-+
-+ /* read not permitted if neither filp nor anyone has registered IRQs */
-+ if (tahvo_irq_subscr != filp)
-+ return -EPERM;
-+
-+ if ((count < sizeof(u32)) || ((count % sizeof(u32)) != 0))
-+ return -EINVAL;
-+
-+ nr = count / sizeof(u32);
-+
-+ for (i = 0; i < nr; i++) {
-+ unsigned long flags;
-+ u32 irq_id;
-+ int ret;
-+
-+ ret = wait_event_interruptible(tahvo_user_waitqueue,
-+ !list_empty(&tahvo_irqs));
-+ if (ret < 0)
-+ return ret;
-+
-+ spin_lock_irqsave(&tahvo_irqs_lock, flags);
-+ irq = list_entry((&tahvo_irqs)->next, struct tahvo_irq, node);
-+ irq_id = irq->id;
-+ list_move(&irq->node, &tahvo_irqs_reserve);
-+ spin_unlock_irqrestore(&tahvo_irqs_lock, flags);
-+
-+ ret = copy_to_user(buf + i * sizeof(irq_id), &irq_id,
-+ sizeof(irq_id));
-+ if (ret)
-+ printk(KERN_ERR "copy_to_user failed: %d\n", ret);
-+ }
-+
-+ return count;
-+}
-+
-+/*
-+ * Poll method
-+ */
-+static unsigned tahvo_poll(struct file *filp, struct poll_table_struct *pt)
-+{
-+ if (!list_empty(&tahvo_irqs))
-+ return POLLIN;
-+
-+ poll_wait(filp, &tahvo_user_waitqueue, pt);
-+
-+ if (!list_empty(&tahvo_irqs))
-+ return POLLIN;
-+ else
-+ return 0;
-+}
-+
-+static struct file_operations tahvo_user_fileops = {
-+ .owner = THIS_MODULE,
-+ .unlocked_ioctl = tahvo_ioctl,
-+ .read = tahvo_read,
-+ .release = tahvo_close,
-+ .poll = tahvo_poll
-+};
-+
-+static struct miscdevice tahvo_device = {
-+ .minor = MISC_DYNAMIC_MINOR,
-+ .name = "tahvo",
-+ .fops = &tahvo_user_fileops
-+};
-+
-+/*
-+ * Initialization
-+ *
-+ * @return 0 if successful, error value otherwise.
-+ */
-+int tahvo_user_init(void)
-+{
-+ struct tahvo_irq *irq;
-+ int res, i;
-+
-+ irq = kmalloc(sizeof(*irq) * TAHVO_MAX_IRQ_BUF_LEN, GFP_KERNEL);
-+ if (irq == NULL) {
-+ printk(KERN_ERR PFX "kmalloc failed\n");
-+ return -ENOMEM;
-+ }
-+ memset(irq, 0, sizeof(*irq) * TAHVO_MAX_IRQ_BUF_LEN);
-+ for (i = 0; i < TAHVO_MAX_IRQ_BUF_LEN; i++)
-+ list_add(&irq[i].node, &tahvo_irqs_reserve);
-+
-+ tahvo_irq_block = irq;
-+
-+ spin_lock_init(&tahvo_irqs_lock);
-+ mutex_init(&tahvo_mutex);
-+
-+ /* Request a misc device */
-+ res = misc_register(&tahvo_device);
-+ if (res < 0) {
-+ printk(KERN_ERR PFX "unable to register misc device for %s\n",
-+ tahvo_device.name);
-+ kfree(irq);
-+ return res;
-+ }
-+
-+ return 0;
-+}
-+
-+/*
-+ * Cleanup.
-+ */
-+void tahvo_user_cleanup(void)
-+{
-+ /* Unregister our misc device */
-+ misc_deregister(&tahvo_device);
-+ /* Unregister and disable all TAHVO interrupts */
-+ tahvo_unreg_irq_handlers();
-+ kfree(tahvo_irq_block);
-+}
-+
-+MODULE_DESCRIPTION("Tahvo ASIC user space functions");
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Mikko Ylinen");
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/user_retu_tahvo.h
-@@ -0,0 +1,75 @@
-+/**
-+ * drivers/cbus/user_retu_tahvo.h
-+ *
-+ * Copyright (C) 2004, 2005 Nokia Corporation
-+ *
-+ * Written by Mikko Ylinen <mikko.k.ylinen@nokia.com>
-+ *
-+ * Definitions and types used by both retu-user and tahvo-user.
-+ *
-+ * 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 _USER_RETU_TAHVO_H
-+#define _USER_RETU_TAHVO_H
-+
-+/* Chip IDs */
-+#define CHIP_RETU 1
-+#define CHIP_TAHVO 2
-+
-+/* Register access type bits */
-+#define READ_ONLY 1
-+#define WRITE_ONLY 2
-+#define READ_WRITE 3
-+#define TOGGLE 4
-+
-+#define MASK(field) ((u16)(field & 0xFFFF))
-+#define REG(field) ((u16)((field >> 16) & 0x3F))
-+
-+/*** IOCTL definitions. These should be kept in sync with user space **********/
-+
-+#define URT_IOC_MAGIC '`'
-+
-+/*
-+ * IOCTL function naming conventions:
-+ * ==================================
-+ * 0 -- No argument and return value
-+ * S -- Set through a pointer
-+ * T -- Tell directly with the argument value
-+ * G -- Reply by setting through a pointer
-+ * Q -- response is on the return value
-+ * X -- S and G atomically
-+ * H -- T and Q atomically
-+ */
-+
-+/* General */
-+#define URT_IOCT_IRQ_SUBSCR _IO(URT_IOC_MAGIC, 0)
-+
-+/* RETU */
-+#define RETU_IOCH_READ _IO(URT_IOC_MAGIC, 1)
-+#define RETU_IOCX_WRITE _IO(URT_IOC_MAGIC, 2)
-+#define RETU_IOCH_ADC_READ _IO(URT_IOC_MAGIC, 3)
-+
-+/* TAHVO */
-+#define TAHVO_IOCH_READ _IO(URT_IOC_MAGIC, 4)
-+#define TAHVO_IOCX_WRITE _IO(URT_IOC_MAGIC, 5)
-+
-+/* This structure is used for writing RETU/TAHVO registers */
-+struct retu_tahvo_write_parms {
-+ u32 field;
-+ u16 value;
-+ u8 result;
-+};
-+
-+#endif
---- linux-2.6.36-rc7.orig/drivers/Makefile
-+++ linux-2.6.36-rc7/drivers/Makefile
-@@ -74,7 +74,7 @@ obj-$(CONFIG_GAMEPORT) += input/gamepor
- obj-$(CONFIG_INPUT) += input/
- obj-$(CONFIG_I2O) += message/
- obj-$(CONFIG_RTC_LIB) += rtc/
--obj-y += i2c/ media/
-+obj-y += i2c/ media/ cbus/
- obj-$(CONFIG_PPS) += pps/
- obj-$(CONFIG_W1) += w1/
- obj-$(CONFIG_POWER_SUPPLY) += power/
---- linux-2.6.36-rc7.orig/arch/arm/Kconfig
-+++ linux-2.6.36-rc7/arch/arm/Kconfig
-@@ -1785,6 +1785,10 @@ source "net/Kconfig"
-
- source "drivers/Kconfig"
-
-+if ARCH_OMAP
-+source "drivers/cbus/Kconfig"
-+endif
-+
- source "fs/Kconfig"
-
- source "arch/arm/Kconfig.debug"
projects / openwrt / svn-archive / archive.git / blobdiff