+++ /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
-
---- 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
---- 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
---- /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");
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