From caec700c9a87d1565d4e3e37c5c4ce9a5e51c052 Mon Sep 17 00:00:00 2001 From: lars Date: Wed, 4 Aug 2010 13:33:55 +0000 Subject: [xburst] Drop 2.6.32 patches git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22485 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../files-2.6.32/drivers/power/jz4740-battery.c | 350 --------------------- 1 file changed, 350 deletions(-) delete mode 100644 target/linux/xburst/files-2.6.32/drivers/power/jz4740-battery.c (limited to 'target/linux/xburst/files-2.6.32/drivers/power/jz4740-battery.c') 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 deleted file mode 100644 index 70c80ebd7..000000000 --- a/target/linux/xburst/files-2.6.32/drivers/power/jz4740-battery.c +++ /dev/null @@ -1,350 +0,0 @@ -/* - * Battery measurement code for Ingenic JZ SOC. - * - * Copyright (C) 2009 Jiejing Zhang - * Copyright (C) 2010, Lars-Peter Clausen - * - * based on tosa_battery.c - * - * Copyright (C) 2008 Marek Vasut -* - * 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 -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -struct jz_battery { - struct jz_battery_platform_data *pdata; - - int charge_irq; - - int status; - long voltage; - - struct power_supply battery; - struct delayed_work work; -}; - -static inline struct jz_battery *psy_to_jz_battery(struct power_supply *psy) -{ - return container_of(psy, struct jz_battery, battery); -} - -static long jz_battery_read_voltage(struct jz_battery *jz_battery) -{ - struct device *adc = jz_battery->battery.dev->parent->parent; - enum jz_adc_battery_scale scale; - - if (jz_battery->pdata->info.voltage_max_design > 2500000) - scale = JZ_ADC_BATTERY_SCALE_7V5; - else - scale = JZ_ADC_BATTERY_SCALE_2V5; - - return jz4740_adc_read_battery_voltage(adc, scale); -} - -static int jz_battery_get_capacity(struct power_supply *psy) -{ - struct jz_battery *jz_battery = psy_to_jz_battery(psy); - struct power_supply_info *info = &jz_battery->pdata->info; - long voltage; - int ret; - int voltage_span; - - voltage = jz_battery_read_voltage(jz_battery); - - if (voltage < 0) - return voltage; - - voltage_span = info->voltage_max_design - info->voltage_min_design; - ret = ((voltage - info->voltage_min_design) * 100) / voltage_span; - - if (ret > 100) - ret = 100; - else if (ret < 0) - ret = 0; - - return ret; -} - -static int jz_battery_get_property(struct power_supply *psy, - enum power_supply_property psp, - union power_supply_propval *val) -{ - struct jz_battery *jz_battery = psy_to_jz_battery(psy); - struct power_supply_info *info = &jz_battery->pdata->info; - long voltage; - - switch (psp) { - case POWER_SUPPLY_PROP_STATUS: - val->intval = jz_battery->status; - break; - case POWER_SUPPLY_PROP_TECHNOLOGY: - val->intval = jz_battery->pdata->info.technology; - break; - case POWER_SUPPLY_PROP_HEALTH: - voltage = jz_battery_read_voltage(jz_battery); - if (voltage < info->voltage_min_design) - val->intval = POWER_SUPPLY_HEALTH_DEAD; - else - val->intval = POWER_SUPPLY_HEALTH_GOOD; - break; - case POWER_SUPPLY_PROP_CAPACITY: - val->intval = jz_battery_get_capacity(psy); - break; - case POWER_SUPPLY_PROP_VOLTAGE_NOW: - val->intval = jz_battery_read_voltage(jz_battery); - if (val->intval < 0) - return val->intval; - break; - case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: - val->intval = info->voltage_max_design; - break; - case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: - val->intval = info->voltage_min_design; - break; - case POWER_SUPPLY_PROP_PRESENT: - val->intval = 1; - break; - default: - return -EINVAL; - } - return 0; -} - -static void jz_battery_external_power_changed(struct power_supply *psy) -{ - struct jz_battery *jz_battery = psy_to_jz_battery(psy); - - cancel_delayed_work(&jz_battery->work); - schedule_delayed_work(&jz_battery->work, 0); -} - -static irqreturn_t jz_battery_charge_irq(int irq, void *data) -{ - struct jz_battery *jz_battery = data; - - cancel_delayed_work(&jz_battery->work); - schedule_delayed_work(&jz_battery->work, 0); - - return IRQ_HANDLED; -} - -static void jz_battery_update(struct jz_battery *jz_battery) -{ - int status; - long voltage; - long voltage_difference; - bool has_changed = 0; - - if (gpio_is_valid(jz_battery->pdata->gpio_charge)) { - int is_charging; - - is_charging = gpio_get_value(jz_battery->pdata->gpio_charge); - is_charging ^= jz_battery->pdata->gpio_charge_active_low; - if (is_charging) - status = POWER_SUPPLY_STATUS_CHARGING; - else - status = POWER_SUPPLY_STATUS_NOT_CHARGING; - - if (status != jz_battery->status) { - jz_battery->status = status; - has_changed = 1; - } - } - - voltage = jz_battery_read_voltage(jz_battery); - voltage_difference = voltage - jz_battery->voltage; - if (voltage_difference > 50000 || voltage_difference < 50000) { - jz_battery->voltage = voltage; - has_changed = 1; - } - if (has_changed) - power_supply_changed(&jz_battery->battery); -} - -static enum power_supply_property jz_battery_properties[] = { - POWER_SUPPLY_PROP_STATUS, - POWER_SUPPLY_PROP_TECHNOLOGY, - POWER_SUPPLY_PROP_HEALTH, - POWER_SUPPLY_PROP_CAPACITY, - POWER_SUPPLY_PROP_VOLTAGE_NOW, - POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, - POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, - POWER_SUPPLY_PROP_PRESENT, -}; - -static void jz_battery_work(struct work_struct *work) -{ - /* Too small interval will increase system workload */ - const int interval = HZ * 30; - struct jz_battery *jz_battery = container_of(work, struct jz_battery, - work.work); - - jz_battery_update(jz_battery); - schedule_delayed_work(&jz_battery->work, interval); -} - -static int jz_battery_probe(struct platform_device *pdev) -{ - int ret = 0; - struct jz_battery_platform_data *pdata = pdev->dev.platform_data; - struct jz_battery *jz_battery; - struct power_supply *battery; - - if (!pdev->dev.platform_data) { - dev_err(&pdev->dev, "No platform data\n"); - return -EINVAL; - } - - jz_battery = kzalloc(sizeof(*jz_battery), GFP_KERNEL); - - if (!jz_battery) { - dev_err(&pdev->dev, "Failed to allocate driver structure\n"); - return -ENOMEM; - } - - battery = &jz_battery->battery; - battery->name = pdata->info.name; - battery->type = POWER_SUPPLY_TYPE_BATTERY; - battery->properties = jz_battery_properties; - battery->num_properties = ARRAY_SIZE(jz_battery_properties); - battery->get_property = jz_battery_get_property; - battery->external_power_changed = jz_battery_external_power_changed; - battery->use_for_apm = 1; - - jz_battery->pdata = pdata; - - INIT_DELAYED_WORK(&jz_battery->work, jz_battery_work); - - if (gpio_is_valid(pdata->gpio_charge)) { - ret = gpio_request(pdata->gpio_charge, dev_name(&pdev->dev)); - if (ret) { - dev_err(&pdev->dev, "charger state gpio request failed.\n"); - goto err_free; - } - ret = gpio_direction_input(pdata->gpio_charge); - if (ret) { - dev_err(&pdev->dev, "charger state gpio set direction failed.\n"); - goto err_free_gpio; - } - - jz_battery->charge_irq = gpio_to_irq(pdata->gpio_charge); - - if (jz_battery->charge_irq >= 0) { - ret = request_irq(jz_battery->charge_irq, - jz_battery_charge_irq, - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, - dev_name(&pdev->dev), jz_battery); - if (ret) { - dev_err(&pdev->dev, "Failed to request charge irq: %d\n", ret); - goto err_free_gpio; - } - } - } else { - jz_battery->charge_irq = -1; - } - - - ret = power_supply_register(&pdev->dev, &jz_battery->battery); - if (ret) { - dev_err(&pdev->dev, "power supply battery register failed.\n"); - goto err_free_irq; - } - - platform_set_drvdata(pdev, jz_battery); - schedule_delayed_work(&jz_battery->work, 0); - - return 0; - -err_free_irq: - if (jz_battery->charge_irq >= 0) - free_irq(jz_battery->charge_irq, jz_battery); -err_free_gpio: - if (gpio_is_valid(pdata->gpio_charge)) - gpio_free(jz_battery->pdata->gpio_charge); -err_free: - kfree(jz_battery); - return ret; -} - -static int jz_battery_remove(struct platform_device *pdev) -{ - struct jz_battery *jz_battery = platform_get_drvdata(pdev); - - cancel_delayed_work_sync(&jz_battery->work); - - if (gpio_is_valid(jz_battery->pdata->gpio_charge)) { - if (jz_battery->charge_irq >= 0) - free_irq(jz_battery->charge_irq, jz_battery); - gpio_free(jz_battery->pdata->gpio_charge); - } - - power_supply_unregister(&jz_battery->battery); - - return 0; -} - -#ifdef CONFIG_PM -static int jz_battery_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct jz_battery *jz_battery = platform_get_drvdata(pdev); - - cancel_delayed_work_sync(&jz_battery->work); - jz_battery->status = POWER_SUPPLY_STATUS_UNKNOWN; - - return 0; -} - -static int jz_battery_resume(struct platform_device *pdev) -{ - struct jz_battery *jz_battery = platform_get_drvdata(pdev); - - schedule_delayed_work(&jz_battery->work, 0); - - return 0; -} -#else -#define jz_battery_suspend NULL -#define jz_battery_resume NULL -#endif - -static struct platform_driver jz_battery_driver = { - .probe = jz_battery_probe, - .remove = __devexit_p(jz_battery_remove), - .suspend = jz_battery_suspend, - .resume = jz_battery_resume, - .driver = { - .name = "jz4740-battery", - .owner = THIS_MODULE, - }, -}; - -static int __init jz_battery_init(void) -{ - return platform_driver_register(&jz_battery_driver); -} -module_init(jz_battery_init); - -static void __exit jz_battery_exit(void) -{ - platform_driver_unregister(&jz_battery_driver); -} -module_exit(jz_battery_exit); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Jiejing Zhang "); -MODULE_DESCRIPTION("JZ4720/JZ4740 SoC battery driver"); 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