[xburst] Add 2.6.37 support

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24914 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 254 insertions, 0 deletions

diff --git a/target/linux/xburst/patches-2.6.37/102-gpio-charger.patch b/target/linux/xburst/patches-2.6.37/102-gpio-charger.patch
new file mode 100644
index 000000000..6803a6517
--- /dev/null
+++ b/target/linux/xburst/patches-2.6.37/102-gpio-charger.patch
@@ -0,0 +1,254 @@
+From 27681cf969174af00e63d572f257e2155bb914be Mon Sep 17 00:00:00 2001
+From: Lars-Peter Clausen <lars@metafoo.de>
+Date: Sat, 24 Apr 2010 12:29:31 +0200
+Subject: [PATCH 04/23] Add gpio chager driver
+
+---
+ drivers/power/Kconfig              |    7 ++
+ drivers/power/Makefile             |    1 +
+ drivers/power/gpio-charger.c       |  185 ++++++++++++++++++++++++++++++++++++
+ include/linux/power/gpio-charger.h |   28 ++++++
+ 4 files changed, 221 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/power/gpio-charger.c
+ create mode 100644 include/linux/power/gpio-charger.h
+
+--- a/drivers/power/Kconfig
++++ b/drivers/power/Kconfig
+@@ -185,4 +185,11 @@ config CHARGER_TWL4030
+ 	help
+ 	  Say Y here to enable support for TWL4030 Battery Charge Interface.
+ 
++config CHARGER_GPIO
++	tristate "GPIO charger"
++	depends on GPIOLIB
++	help
++	  Say Y to include support for chargers indicating their status through
++	  a GPIO pin.
++
+ endif # POWER_SUPPLY
+--- a/drivers/power/Makefile
++++ b/drivers/power/Makefile
+@@ -32,3 +32,4 @@ obj-$(CONFIG_BATTERY_JZ4740)	+= jz4740-b
+ obj-$(CONFIG_BATTERY_INTEL_MID)	+= intel_mid_battery.o
+ obj-$(CONFIG_CHARGER_ISP1704)	+= isp1704_charger.o
+ obj-$(CONFIG_CHARGER_TWL4030)	+= twl4030_charger.o
++obj-$(CONFIG_CHARGER_GPIO)	+= gpio-charger.o
+--- /dev/null
++++ b/drivers/power/gpio-charger.c
+@@ -0,0 +1,185 @@
++/*
++ *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
++ *  Driver for chargers indicating their status through a GPIO pin
++ *
++ *  This program is free software; you can redistribute	 it and/or modify it
++ *  under  the terms of	 the GNU General  Public License as published by the
++ *  Free Software Foundation;  either version 2 of the	License, or (at your
++ *  option) any later version.
++ *
++ *  You should have received a copy of the  GNU General Public License along
++ *  with this program; if not, write  to the Free Software Foundation, Inc.,
++ *  675 Mass Ave, Cambridge, MA 02139, USA.
++ *
++ */
++
++#include <linux/device.h>
++#include <linux/gpio.h>
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/power_supply.h>
++#include <linux/slab.h>
++#include <linux/types.h>
++
++#include <linux/power/gpio-charger.h>
++
++struct gpio_charger {
++	const struct gpio_charger_platform_data *pdata;
++
++	int irq;
++
++	struct power_supply charger;
++};
++
++static irqreturn_t gpio_charger_irq(int irq, void *devid)
++{
++	struct power_supply *charger = devid;
++	power_supply_changed(charger);
++
++	return IRQ_HANDLED;
++}
++
++static inline struct gpio_charger *psy_to_gpio_charger(struct power_supply *psy)
++{
++	return container_of(psy, struct gpio_charger, charger);
++}
++
++static int gpio_charger_get_property(struct power_supply *psy,
++	enum power_supply_property psp, union power_supply_propval *val)
++{
++	struct gpio_charger *gpio_charger = psy_to_gpio_charger(psy);
++	const struct gpio_charger_platform_data *pdata = gpio_charger->pdata;
++
++	switch (psp) {
++	case POWER_SUPPLY_PROP_ONLINE:
++		val->intval = gpio_get_value(pdata->gpio);
++		val->intval ^= pdata->gpio_active_low;
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++static enum power_supply_property gpio_charger_properties[] = {
++	POWER_SUPPLY_PROP_ONLINE,
++};
++
++static int __devinit gpio_charger_probe(struct platform_device *pdev)
++{
++	const struct gpio_charger_platform_data *pdata = pdev->dev.platform_data;
++	struct gpio_charger *gpio_charger;
++	struct power_supply *charger;
++	int ret;
++
++	if (!pdata) {
++		dev_err(&pdev->dev, "No platform data");
++		return -EINVAL;
++	}
++
++	gpio_charger = kzalloc(sizeof(*gpio_charger), GFP_KERNEL);
++
++	charger = &gpio_charger->charger;
++
++	charger->name = pdata->name;
++	charger->type = pdata->type;
++	charger->properties = gpio_charger_properties;
++	charger->num_properties = ARRAY_SIZE(gpio_charger_properties);
++	charger->get_property  = gpio_charger_get_property;
++	charger->supplied_to = pdata->batteries;
++	charger->num_supplicants = pdata->num_batteries;
++
++	if (gpio_is_valid(pdata->gpio)) {
++		ret = gpio_request(pdata->gpio, dev_name(&pdev->dev));
++		if (ret) {
++			dev_err(&pdev->dev, "Failed to request gpio pin: %d\n", ret);
++			goto err;
++		}
++		ret = gpio_direction_input(pdata->gpio);
++		if (ret) {
++			dev_err(&pdev->dev, "Failed to set gpio to input: %d\n", ret);
++			goto err_gpio_free;
++		}
++
++		gpio_charger->irq = gpio_to_irq(pdata->gpio);
++		if (gpio_charger->irq >= 0) {
++			ret = request_irq(gpio_charger->irq, gpio_charger_irq,
++			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
++			dev_name(&pdev->dev), charger);
++			if (ret) {
++				dev_warn(&pdev->dev, "Failed to request online gpio irq: %d\n", ret);
++				gpio_charger->irq = -1;
++			}
++		}
++	}
++
++	gpio_charger->pdata = pdata;
++
++	ret = power_supply_register(&pdev->dev, charger);
++	if (ret < 0) {
++		dev_err(&pdev->dev, "Failed to register power supply: %d\n", ret);
++		goto err_gpio_free;
++	}
++
++	platform_set_drvdata(pdev, gpio_charger);
++
++	return 0;
++
++err_gpio_free:
++	if (gpio_is_valid(pdata->gpio)) {
++		if (gpio_charger->irq >= 0)
++			free_irq(gpio_charger->irq, charger);
++		gpio_free(pdata->gpio);
++	}
++err:
++	return ret;
++}
++
++static int __devexit gpio_charger_remove(struct platform_device *pdev)
++{
++	struct gpio_charger *gpio_charger = platform_get_drvdata(pdev);
++	const struct gpio_charger_platform_data *pdata = gpio_charger->pdata;
++
++	power_supply_unregister(&gpio_charger->charger);
++
++	if (gpio_is_valid(pdata->gpio)) {
++		if (gpio_charger->irq >= 0)
++			free_irq(gpio_charger->irq, &gpio_charger->charger);
++		gpio_free(pdata->gpio);
++	}
++
++	platform_set_drvdata(pdev, NULL);
++	kfree(gpio_charger);
++
++	return 0;
++}
++
++static struct platform_driver  gpio_charger_driver = {
++	.probe = gpio_charger_probe,
++	.remove = __devexit_p(gpio_charger_remove),
++	.driver = {
++		.name = "gpio-charger",
++		.owner = THIS_MODULE,
++	},
++};
++
++static int __init gpio_charger_init(void)
++{
++	return platform_driver_register(&gpio_charger_driver);
++}
++module_init(gpio_charger_init);
++
++static void __exit gpio_charger_exit(void)
++{
++	platform_driver_unregister(&gpio_charger_driver);
++}
++module_exit(gpio_charger_exit);
++
++MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
++MODULE_DESCRIPTION("Driver for chargers indicating their status through a gpio");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("platform:gpio-charger");
+--- /dev/null
++++ b/include/linux/power/gpio-charger.h
+@@ -0,0 +1,28 @@
++/*
++ *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
++ *
++ *  This program is free software; you can redistribute	 it and/or modify it
++ *  under  the terms of	 the GNU General  Public License as published by the
++ *  Free Software Foundation;  either version 2 of the	License, or (at your
++ *  option) any later version.
++ *
++ *  You should have received a copy of the  GNU General Public License along
++ *  with this program; if not, write  to the Free Software Foundation, Inc.,
++ *  675 Mass Ave, Cambridge, MA 02139, USA.
++ *
++ */
++
++#ifndef __LINUX_POWER_GPIO_CHARGER_H__
++#define __LINUX_POWER_GPIO_CHARGER_H__
++
++struct gpio_charger_platform_data {
++	const char *name;
++	enum power_supply_type type;
++	int gpio;
++	int gpio_active_low;
++
++	char **batteries;
++	size_t num_batteries;
++};
++
++#endif