diff options
Diffstat (limited to 'target/linux/xburst/patches-2.6.37/102-gpio-charger.patch')
| -rw-r--r-- | target/linux/xburst/patches-2.6.37/102-gpio-charger.patch | 254 |
1 files changed, 0 insertions, 254 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 deleted file mode 100644 index 6803a65..0000000 --- a/target/linux/xburst/patches-2.6.37/102-gpio-charger.patch +++ /dev/null @@ -1,254 +0,0 @@ -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 |