diff options
Diffstat (limited to 'target/linux/xburst/files-2.6.32/drivers')
| -rw-r--r-- | target/linux/xburst/files-2.6.32/drivers/power/gpio-charger.c | 184 | ||||
| -rw-r--r-- | target/linux/xburst/files-2.6.32/drivers/power/jz4740-battery.c | 153 |
2 files changed, 191 insertions, 146 deletions
diff --git a/target/linux/xburst/files-2.6.32/drivers/power/gpio-charger.c b/target/linux/xburst/files-2.6.32/drivers/power/gpio-charger.c new file mode 100644 index 000000000..95c6ba71d --- /dev/null +++ b/target/linux/xburst/files-2.6.32/drivers/power/gpio-charger.c @@ -0,0 +1,184 @@ +/* + * 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/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/power_supply.h> +#include <linux/interrupt.h> +#include <linux/gpio.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; + } + } + } + + 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; + } + + gpio_charger->pdata = pdata; + 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 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"); diff --git a/target/linux/xburst/files-2.6.32/drivers/power/jz4740-battery.c b/target/linux/xburst/files-2.6.32/drivers/power/jz4740-battery.c index fe03d8076..f4c18a57b 100644 --- a/target/linux/xburst/files-2.6.32/drivers/power/jz4740-battery.c +++ b/target/linux/xburst/files-2.6.32/drivers/power/jz4740-battery.c @@ -24,9 +24,7 @@ #include <linux/jz4740-adc.h> struct jz_battery_info { - struct power_supply usb; struct power_supply bat; - struct power_supply ac; int bat_status; struct jz_batt_info *pdata; struct mutex work_lock; @@ -37,74 +35,6 @@ struct jz_battery_info { #define ps_to_jz_battery(x) container_of((x), struct jz_battery_info, bat); /********************************************************************* - * Power - *********************************************************************/ - - -static int jz_get_power_prop(struct jz_battery_info *bat_info, - struct power_supply *psy, - enum power_supply_property psp, - union power_supply_propval *val) -{ - int gpio; - - if (bat_info == 0 || bat_info->pdata == 0) - return -EINVAL; - gpio = (psy->type == POWER_SUPPLY_TYPE_MAINS) ? - bat_info->pdata->dc_dect_gpio : - bat_info->pdata->usb_dect_gpio; - if (!gpio_is_valid(gpio)) - return -EINVAL; - switch (psp) { - case POWER_SUPPLY_PROP_ONLINE: - val->intval = !gpio_get_value(gpio); - break; - default: - return -EINVAL; - } - - return 0; -} - -static int jz_usb_get_power_prop(struct power_supply *psy, - enum power_supply_property psp, - union power_supply_propval *val) -{ - struct jz_battery_info *bat_info = container_of(psy, struct jz_battery_info, usb); - return jz_get_power_prop(bat_info, psy, psp, val); -} - -static int jz_ac_get_power_prop(struct power_supply *psy, - enum power_supply_property psp, - union power_supply_propval *val) -{ - struct jz_battery_info *bat_info = container_of(psy, struct jz_battery_info, ac); - return jz_get_power_prop(bat_info, psy, psp, val); -} - - -static enum power_supply_property jz_power_props[] = { - POWER_SUPPLY_PROP_ONLINE, -}; - -static struct power_supply jz_ac = { - .name = "ac", - .type = POWER_SUPPLY_TYPE_MAINS, - .properties = jz_power_props, - .num_properties = ARRAY_SIZE(jz_power_props), - .get_property = jz_ac_get_power_prop, -}; - -static struct power_supply jz_usb = { - .name = "usb", - .type = POWER_SUPPLY_TYPE_USB, - .properties = jz_power_props, - .num_properties = ARRAY_SIZE(jz_power_props), - .get_property = jz_usb_get_power_prop, -}; - - -/********************************************************************* * Battery properties *********************************************************************/ @@ -307,58 +237,24 @@ static int jz_bat_probe(struct platform_device *pdev) { int ret = 0; struct jz_battery_info *bat_info; - + + if (!pdev->dev.platform_data) { + dev_err(&pdev->dev, "Please set battery info\n"); + return -EINVAL; + } + bat_info = kzalloc(sizeof(struct jz_battery_info), GFP_KERNEL); if (!bat_info) { return -ENOMEM; } - if (!pdev->dev.platform_data) { - dev_err(&pdev->dev, "Please set battery info\n"); - ret = -EINVAL; - goto err_platform_data; - } platform_set_drvdata(pdev, bat_info); bat_info->pdata = pdev->dev.platform_data; bat_info->bat = bat_ps; - bat_info->usb = jz_usb; - bat_info->ac = jz_ac; mutex_init(&bat_info->work_lock); INIT_DELAYED_WORK(&bat_info->bat_work, jz_bat_work); - if (gpio_is_valid(bat_info->pdata->dc_dect_gpio)) { - ret = gpio_request(bat_info->pdata->dc_dect_gpio, "AC/DC DECT"); - if (ret) { - dev_err(&pdev->dev, "ac/dc dect gpio request failed.\n"); - - goto err_dc_gpio_request; - } - ret = gpio_direction_input(bat_info->pdata->dc_dect_gpio); - if (ret) { - dev_err(&pdev->dev, "ac/dc dect gpio direction failed.\n"); - - goto err_dc_gpio_direction; - } - } - - if (gpio_is_valid(bat_info->pdata->usb_dect_gpio)) { - ret = gpio_request(bat_info->pdata->usb_dect_gpio, "USB DECT"); - if (ret) { - dev_err(&pdev->dev, "usb dect gpio request failed.\n"); - - goto err_usb_gpio_request; - } - ret = gpio_direction_input(bat_info->pdata->usb_dect_gpio); - if (ret) { - dev_err(&pdev->dev, "usb dect gpio set direction failed.\n"); - goto err_usb_gpio_direction; - } - - jz_gpio_disable_pullup(bat_info->pdata->usb_dect_gpio); - /* TODO: Use generic gpio is better */ - } - if (gpio_is_valid(bat_info->pdata->charg_stat_gpio)) { ret = gpio_request(bat_info->pdata->charg_stat_gpio, "CHARG STAT"); if (ret) { @@ -370,25 +266,7 @@ static int jz_bat_probe(struct platform_device *pdev) dev_err(&pdev->dev, "charger state gpio set direction failed.\n"); goto err_charg_gpio_direction; } - } - - if (gpio_is_valid(bat_info->pdata->dc_dect_gpio)) { - ret = power_supply_register(&pdev->dev, &bat_info->ac); - if (ret) { - dev_err(&pdev->dev, "power supply ac/dc register failed.\n"); - goto err_power_register_ac; - } - } - - if (gpio_is_valid(bat_info->pdata->usb_dect_gpio)) { - ret = power_supply_register(&pdev->dev, &bat_info->usb); - if (ret) { - dev_err(&pdev->dev, "power supply usb register failed.\n"); - goto err_power_register_usb; - } - } - if (gpio_is_valid(bat_info->pdata->charg_stat_gpio)) { ret = power_supply_register(&pdev->dev, &bat_info->bat); if (ret) { dev_err(&pdev->dev, "power supply battery register failed.\n"); @@ -405,20 +283,9 @@ static int jz_bat_probe(struct platform_device *pdev) return ret; err_power_register_bat: - power_supply_unregister(&bat_info->usb); -err_power_register_usb: - power_supply_unregister(&bat_info->ac); -err_power_register_ac: err_charg_gpio_direction: gpio_free(bat_info->pdata->charg_stat_gpio); err_charg_gpio_request: -err_usb_gpio_direction: - gpio_free(bat_info->pdata->usb_dect_gpio); -err_usb_gpio_request: -err_dc_gpio_direction: - gpio_free(bat_info->pdata->dc_dect_gpio); -err_dc_gpio_request: -err_platform_data: kfree(bat_info); return ret; } @@ -426,19 +293,13 @@ err_platform_data: static int jz_bat_remove(struct platform_device *pdev) { struct jz_battery_info *bat_info = platform_get_drvdata(pdev); - + if (bat_info->pdata) { - if (gpio_is_valid(bat_info->pdata->dc_dect_gpio)) - gpio_free(bat_info->pdata->dc_dect_gpio); - if (gpio_is_valid(bat_info->pdata->usb_dect_gpio)) - gpio_free(bat_info->pdata->usb_dect_gpio); if (gpio_is_valid(bat_info->pdata->charg_stat_gpio)) gpio_free(bat_info->pdata->charg_stat_gpio); } power_supply_unregister(&bat_ps); - power_supply_unregister(&jz_ac); - power_supply_unregister(&jz_usb); return 0; } |