diff options
Diffstat (limited to 'target/linux/s3c24xx/files-2.6.31/arch/arm/mach-s3c2442/gta02-pm-bt.c')
| -rw-r--r-- | target/linux/s3c24xx/files-2.6.31/arch/arm/mach-s3c2442/gta02-pm-bt.c | 258 |
1 files changed, 0 insertions, 258 deletions
diff --git a/target/linux/s3c24xx/files-2.6.31/arch/arm/mach-s3c2442/gta02-pm-bt.c b/target/linux/s3c24xx/files-2.6.31/arch/arm/mach-s3c2442/gta02-pm-bt.c deleted file mode 100644 index 29a6b9ef32..0000000000 --- a/target/linux/s3c24xx/files-2.6.31/arch/arm/mach-s3c2442/gta02-pm-bt.c +++ /dev/null @@ -1,258 +0,0 @@ -/* - * Bluetooth PM code for the Openmoko Freerunner GSM Phone - * - * (C) 2007 by Openmoko Inc. - * Author: Harald Welte <laforge@openmoko.org> - * All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation - * - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/rfkill.h> -#include <linux/err.h> -#include <mach/gpio-fns.h> - -#include <mach/hardware.h> -#include <asm/mach-types.h> - -#include <mach/gta02.h> -#include <linux/mfd/pcf50633/gpio.h> - -#include <linux/regulator/consumer.h> - -#define DRVMSG "Openmoko Freerunner Bluetooth Power Management" - -struct gta02_pm_bt_data { - struct regulator *regulator; - struct rfkill *rfkill; - int pre_resume_state; -}; - -static ssize_t bt_read(struct device *dev, struct device_attribute *attr, - char *buf) -{ - int ret = 0; - if (!strcmp(attr->attr.name, "power_on")) { - if (s3c2410_gpio_getpin(GTA02_GPIO_BT_EN)) - ret = 1; - } else if (!strcmp(attr->attr.name, "reset")) { - if (s3c2410_gpio_getpin(GTA02_GPIO_BT_EN) == 0) - ret = 1; - } - - if (!ret) { - return strlcpy(buf, "0\n", 3); - } else { - return strlcpy(buf, "1\n", 3); - } -} - -static void __gta02_pm_bt_toggle_radio(struct device *dev, unsigned int on) -{ - struct gta02_pm_bt_data *bt_data = dev_get_drvdata(dev); - - dev_info(dev, "__gta02_pm_bt_toggle_radio %d\n", on); - - bt_data = dev_get_drvdata(dev); - - s3c2410_gpio_setpin(GTA02_GPIO_BT_EN, !on); - - if (on) { - if (!regulator_is_enabled(bt_data->regulator)) - regulator_enable(bt_data->regulator); - } else { - if (regulator_is_enabled(bt_data->regulator)) - regulator_disable(bt_data->regulator); - } - - s3c2410_gpio_setpin(GTA02_GPIO_BT_EN, on); -} - - -static int bt_rfkill_set_block(void *data, bool blocked) -{ - struct device *dev = data; - - __gta02_pm_bt_toggle_radio(dev, !blocked); - - return 0; -} - -static const struct rfkill_ops gta02_bt_rfkill_ops = { - .set_block = bt_rfkill_set_block, -}; - - -static ssize_t bt_write(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - unsigned long on = simple_strtoul(buf, NULL, 10); - struct gta02_pm_bt_data *bt_data = dev_get_drvdata(dev); - - if (!strcmp(attr->attr.name, "power_on")) { - rfkill_set_sw_state(bt_data->rfkill, on ? 1 : 0); - - __gta02_pm_bt_toggle_radio(dev, on); - } else if (!strcmp(attr->attr.name, "reset")) { - /* reset is low-active, so we need to invert */ - s3c2410_gpio_setpin(GTA02_GPIO_BT_EN, on ? 0 : 1); - } - - return count; -} - -static DEVICE_ATTR(power_on, 0644, bt_read, bt_write); -static DEVICE_ATTR(reset, 0644, bt_read, bt_write); - -#ifdef CONFIG_PM -static int gta02_bt_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct gta02_pm_bt_data *bt_data = dev_get_drvdata(&pdev->dev); - - dev_dbg(&pdev->dev, DRVMSG ": suspending\n"); - - bt_data->pre_resume_state = s3c2410_gpio_getpin(GTA02_GPIO_BT_EN); - __gta02_pm_bt_toggle_radio(&pdev->dev, 0); - - return 0; -} - -static int gta02_bt_resume(struct platform_device *pdev) -{ - struct gta02_pm_bt_data *bt_data = dev_get_drvdata(&pdev->dev); - dev_dbg(&pdev->dev, DRVMSG ": resuming\n"); - - __gta02_pm_bt_toggle_radio(&pdev->dev, bt_data->pre_resume_state); - return 0; -} -#else -#define gta02_bt_suspend NULL -#define gta02_bt_resume NULL -#endif - -static struct attribute *gta02_bt_sysfs_entries[] = { - &dev_attr_power_on.attr, - &dev_attr_reset.attr, - NULL -}; - -static struct attribute_group gta02_bt_attr_group = { - .name = NULL, - .attrs = gta02_bt_sysfs_entries, -}; - -static int __init gta02_bt_probe(struct platform_device *pdev) -{ - struct rfkill *rfkill; - struct regulator *regulator; - struct gta02_pm_bt_data *bt_data; - int ret; - - dev_info(&pdev->dev, DRVMSG ": starting\n"); - - bt_data = kzalloc(sizeof(*bt_data), GFP_KERNEL); - dev_set_drvdata(&pdev->dev, bt_data); - - regulator = regulator_get(&pdev->dev, "BT_3V2"); - if (IS_ERR(regulator)) - return -ENODEV; - - bt_data->regulator = regulator; - - /* this tests the true physical state of the regulator... */ - if (regulator_is_enabled(regulator)) { - /* - * but these only operate on the logical state of the - * regulator... so we need to logicaly "adopt" it on - * to turn it off - */ - regulator_enable(regulator); - regulator_disable(regulator); - } - - /* we pull reset to low to make sure that the chip doesn't - * drain power through the reset line */ - s3c2410_gpio_setpin(GTA02_GPIO_BT_EN, 0); - - rfkill = rfkill_alloc(pdev->name, &pdev->dev, RFKILL_TYPE_BLUETOOTH, - >a02_bt_rfkill_ops, &pdev->dev); - - if (!rfkill) { - dev_err(&pdev->dev, "Failed to allocate rfkill\n"); - return -ENOMEM; - } - - rfkill_init_sw_state(rfkill, 0); - - ret = rfkill_register(rfkill); - if (ret) { - rfkill_destroy(rfkill); - dev_err(&pdev->dev, "Failed to register rfkill\n"); - return ret; - } - - bt_data->rfkill = rfkill; - - return sysfs_create_group(&pdev->dev.kobj, >a02_bt_attr_group); -} - -static int gta02_bt_remove(struct platform_device *pdev) -{ - struct gta02_pm_bt_data *bt_data = dev_get_drvdata(&pdev->dev); - struct regulator *regulator; - - sysfs_remove_group(&pdev->dev.kobj, >a02_bt_attr_group); - - if (bt_data->rfkill) { - rfkill_destroy(bt_data->rfkill); - } - - if (!bt_data || !bt_data->regulator) - return 0; - - regulator = bt_data->regulator; - - /* Make sure regulator is disabled before calling regulator_put */ - if (regulator_is_enabled(regulator)) - regulator_disable(regulator); - - regulator_put(regulator); - - kfree(bt_data); - - return 0; -} - -static struct platform_driver gta02_bt_driver = { - .probe = gta02_bt_probe, - .remove = gta02_bt_remove, - .suspend = gta02_bt_suspend, - .resume = gta02_bt_resume, - .driver = { - .name = "gta02-pm-bt", - }, -}; - -static int __devinit gta02_bt_init(void) -{ - return platform_driver_register(>a02_bt_driver); -} - -static void gta02_bt_exit(void) -{ - platform_driver_unregister(>a02_bt_driver); -} - -module_init(gta02_bt_init); -module_exit(gta02_bt_exit); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>"); -MODULE_DESCRIPTION(DRVMSG); |