--- /dev/null
+From 7041346d379e563e9ee66f9dd31277e4fb6b1b1f Mon Sep 17 00:00:00 2001
+From: Mike Lockwood <lockwood@android.com>
+Date: Wed, 6 Feb 2008 11:37:10 -0500
+Subject: [PATCH 126/134] [ARM] goldfish: POWER: New power supply driver for goldfish.
+
+Signed-off-by: Mike A. Chan <mikechan@google.com>
+---
+ drivers/power/Kconfig | 5 +
+ drivers/power/Makefile | 3 +-
+ drivers/power/goldfish_battery.c | 254 ++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 261 insertions(+), 1 deletions(-)
+ create mode 100644 drivers/power/goldfish_battery.c
+
+diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
+index 33da112..593c616 100644
+--- a/drivers/power/Kconfig
++++ b/drivers/power/Kconfig
+@@ -88,4 +88,9 @@ config CHARGER_PCF50633
+ help
+ Say Y to include support for NXP PCF50633 Main Battery Charger.
+
++config BATTERY_GOLDFISH
++ tristate "Goldfish battery driver"
++ help
++ Say Y to enable support for the battery and AC power in the Goldfish emulator.
++
+ endif # POWER_SUPPLY
+diff --git a/drivers/power/Makefile b/drivers/power/Makefile
+index 2fcf41d..5be0fbb 100644
+--- a/drivers/power/Makefile
++++ b/drivers/power/Makefile
+@@ -19,10 +19,11 @@ obj-$(CONFIG_APM_POWER) += apm_power.o
+ obj-$(CONFIG_WM8350_POWER) += wm8350_power.o
+
+ obj-$(CONFIG_BATTERY_DS2760) += ds2760_battery.o
++obj-$(CONFIG_BATTERY_GOLDFISH) += goldfish_battery.o
+ obj-$(CONFIG_BATTERY_PMU) += pmu_battery.o
+ obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o
+ obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o
+ obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o
+ obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
+ obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o
+-obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
+\ No newline at end of file
++obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
+diff --git a/drivers/power/goldfish_battery.c b/drivers/power/goldfish_battery.c
+new file mode 100644
+index 0000000..868dc83
+--- /dev/null
++++ b/drivers/power/goldfish_battery.c
+@@ -0,0 +1,254 @@
++/* drivers/power/goldfish_battery.c
++ *
++ * Power supply driver for the goldfish emulator
++ *
++ * Copyright (C) 2008 Google, Inc.
++ * Author: Mike Lockwood <lockwood@android.com>
++ *
++ * This software is licensed under the terms of the GNU General Public
++ * License version 2, as published by the Free Software Foundation, and
++ * may be copied, distributed, and modified under those terms.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ */
++
++#include <linux/module.h>
++#include <linux/err.h>
++#include <linux/platform_device.h>
++#include <linux/power_supply.h>
++#include <linux/types.h>
++#include <linux/pci.h>
++#include <linux/interrupt.h>
++#include <asm/io.h>
++
++
++struct goldfish_battery_data {
++ uint32_t reg_base;
++ int irq;
++ spinlock_t lock;
++
++ struct power_supply battery;
++ struct power_supply ac;
++};
++
++#define GOLDFISH_BATTERY_READ(data, addr) (readl(data->reg_base + addr))
++#define GOLDFISH_BATTERY_WRITE(data, addr, x) (writel(x, data->reg_base + addr))
++
++
++/* temporary variable used between goldfish_battery_probe() and goldfish_battery_open() */
++static struct goldfish_battery_data *battery_data;
++
++enum {
++ /* status register */
++ BATTERY_INT_STATUS = 0x00,
++ /* set this to enable IRQ */
++ BATTERY_INT_ENABLE = 0x04,
++
++ BATTERY_AC_ONLINE = 0x08,
++ BATTERY_STATUS = 0x0C,
++ BATTERY_HEALTH = 0x10,
++ BATTERY_PRESENT = 0x14,
++ BATTERY_CAPACITY = 0x18,
++
++ BATTERY_STATUS_CHANGED = 1U << 0,
++ AC_STATUS_CHANGED = 1U << 1,
++ BATTERY_INT_MASK = BATTERY_STATUS_CHANGED | AC_STATUS_CHANGED,
++};
++
++
++static int goldfish_ac_get_property(struct power_supply *psy,
++ enum power_supply_property psp,
++ union power_supply_propval *val)
++{
++ struct goldfish_battery_data *data = container_of(psy,
++ struct goldfish_battery_data, ac);
++ int ret = 0;
++
++ switch (psp) {
++ case POWER_SUPPLY_PROP_ONLINE:
++ val->intval = GOLDFISH_BATTERY_READ(data, BATTERY_AC_ONLINE);
++ break;
++ default:
++ ret = -EINVAL;
++ break;
++ }
++ return ret;
++}
++
++static int goldfish_battery_get_property(struct power_supply *psy,
++ enum power_supply_property psp,
++ union power_supply_propval *val)
++{
++ struct goldfish_battery_data *data = container_of(psy,
++ struct goldfish_battery_data, battery);
++ int ret = 0;
++
++ switch (psp) {
++ case POWER_SUPPLY_PROP_STATUS:
++ val->intval = GOLDFISH_BATTERY_READ(data, BATTERY_STATUS);
++ break;
++ case POWER_SUPPLY_PROP_HEALTH:
++ val->intval = GOLDFISH_BATTERY_READ(data, BATTERY_HEALTH);
++ break;
++ case POWER_SUPPLY_PROP_PRESENT:
++ val->intval = GOLDFISH_BATTERY_READ(data, BATTERY_PRESENT);
++ break;
++ case POWER_SUPPLY_PROP_TECHNOLOGY:
++ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
++ break;
++ case POWER_SUPPLY_PROP_CAPACITY:
++ val->intval = GOLDFISH_BATTERY_READ(data, BATTERY_CAPACITY);
++ break;
++ default:
++ ret = -EINVAL;
++ break;
++ }
++
++ return ret;
++}
++
++static enum power_supply_property goldfish_battery_props[] = {
++ POWER_SUPPLY_PROP_STATUS,
++ POWER_SUPPLY_PROP_HEALTH,
++ POWER_SUPPLY_PROP_PRESENT,
++ POWER_SUPPLY_PROP_TECHNOLOGY,
++ POWER_SUPPLY_PROP_CAPACITY,
++};
++
++static enum power_supply_property goldfish_ac_props[] = {
++ POWER_SUPPLY_PROP_ONLINE,
++};
++
++static irqreturn_t goldfish_battery_interrupt(int irq, void *dev_id)
++{
++ unsigned long irq_flags;
++ struct goldfish_battery_data *data = dev_id;
++ uint32_t status;
++
++ spin_lock_irqsave(&data->lock, irq_flags);
++
++ /* read status flags, which will clear the interrupt */
++ status = GOLDFISH_BATTERY_READ(data, BATTERY_INT_STATUS);
++ status &= BATTERY_INT_MASK;
++
++ if (status & BATTERY_STATUS_CHANGED)
++ power_supply_changed(&data->battery);
++ if (status & AC_STATUS_CHANGED)
++ power_supply_changed(&data->ac);
++
++ spin_unlock_irqrestore(&data->lock, irq_flags);
++ return status ? IRQ_HANDLED : IRQ_NONE;
++}
++
++
++static int goldfish_battery_probe(struct platform_device *pdev)
++{
++ int ret;
++ struct resource *r;
++ struct goldfish_battery_data *data;
++
++ data = kzalloc(sizeof(*data), GFP_KERNEL);
++ if (data == NULL) {
++ ret = -ENOMEM;
++ goto err_data_alloc_failed;
++ }
++ spin_lock_init(&data->lock);
++
++ data->battery.properties = goldfish_battery_props;
++ data->battery.num_properties = ARRAY_SIZE(goldfish_battery_props);
++ data->battery.get_property = goldfish_battery_get_property;
++ data->battery.name = "battery";
++ data->battery.type = POWER_SUPPLY_TYPE_BATTERY;
++
++ data->ac.properties = goldfish_ac_props;
++ data->ac.num_properties = ARRAY_SIZE(goldfish_ac_props);
++ data->ac.get_property = goldfish_ac_get_property;
++ data->ac.name = "ac";
++ data->ac.type = POWER_SUPPLY_TYPE_MAINS;
++
++ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (r == NULL) {
++ printk(KERN_ERR "%s: platform_get_resource failed\n", pdev->name);
++ ret = -ENODEV;
++ goto err_no_io_base;
++ }
++ data->reg_base = IO_ADDRESS(r->start - IO_START);
++
++ data->irq = platform_get_irq(pdev, 0);
++ if (data->irq < 0) {
++ printk(KERN_ERR "%s: platform_get_irq failed\n", pdev->name);
++ ret = -ENODEV;
++ goto err_no_irq;
++ }
++
++ ret = request_irq(data->irq, goldfish_battery_interrupt, IRQF_SHARED, pdev->name, data);
++ if (ret)
++ goto err_request_irq_failed;
++
++ ret = power_supply_register(&pdev->dev, &data->ac);
++ if (ret)
++ goto err_ac_failed;
++
++ ret = power_supply_register(&pdev->dev, &data->battery);
++ if (ret)
++ goto err_battery_failed;
++
++ platform_set_drvdata(pdev, data);
++ battery_data = data;
++
++ GOLDFISH_BATTERY_WRITE(data, BATTERY_INT_ENABLE, BATTERY_INT_MASK);
++ return 0;
++
++err_battery_failed:
++ power_supply_unregister(&data->ac);
++err_ac_failed:
++ free_irq(data->irq, data);
++err_request_irq_failed:
++err_no_irq:
++err_no_io_base:
++ kfree(data);
++err_data_alloc_failed:
++ return ret;
++}
++
++static int goldfish_battery_remove(struct platform_device *pdev)
++{
++ struct goldfish_battery_data *data = platform_get_drvdata(pdev);
++
++ power_supply_unregister(&data->battery);
++ power_supply_unregister(&data->ac);
++
++ free_irq(data->irq, data);
++ kfree(data);
++ battery_data = NULL;
++ return 0;
++}
++
++static struct platform_driver goldfish_battery_device = {
++ .probe = goldfish_battery_probe,
++ .remove = goldfish_battery_remove,
++ .driver = {
++ .name = "goldfish-battery"
++ }
++};
++
++static int __init goldfish_battery_init(void)
++{
++ return platform_driver_register(&goldfish_battery_device);
++}
++
++static void __exit goldfish_battery_exit(void)
++{
++ platform_driver_unregister(&goldfish_battery_device);
++}
++
++module_init(goldfish_battery_init);
++module_exit(goldfish_battery_exit);
++
++MODULE_AUTHOR("Mike Lockwood lockwood@android.com");
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("Battery driver for the Goldfish emulator");
+--
+1.6.2
+
projects / openwrt / svn-archive / archive.git / blobdiff