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--- linux-3.1.6/arch/arm/mach-s3c2410/mach-n30.c.orig 2011-12-31 16:38:31.958217564 +0100
+++ linux-3.1.6/arch/arm/mach-s3c2410/mach-n30.c 2011-12-31 16:38:56.694337733 +0100
@@ -167,6 +167,11 @@
.cfg_gpio = s3c24xx_ts_cfg_gpio,
};
+static struct platform_device n30_battery = {
+ .name = "n30-battery",
+ .id = -1,
+};
+
static struct gpio_keys_button n30_buttons[] = {
{
.gpio = S3C2410_GPF(0),
@@ -521,6 +526,7 @@
&s3c_device_sdi,
&s3c_device_adc,
&s3c_device_ts,
+ &n30_battery,
&n30_button_device,
&n30_blue_led,
&n30_warning_led,
@@ -539,6 +545,7 @@
&s3c_device_ts,
&s3c_device_timer[0],
&n35_backlight,
+ &n30_battery,
&n35_button_device,
&n35_blue_led,
&n35_warning_led,
--- linux-3.1.6/drivers/power/Kconfig.orig 2011-12-31 16:38:31.958217564 +0100
+++ linux-3.1.6/drivers/power/Kconfig 2011-12-31 16:38:56.695337657 +0100
@@ -82,6 +82,12 @@
Say Y here to enable support for the DS2782/DS2786 standalone battery
gas-gauge.
+config BATTERY_N30
+ tristate "Acer n30/n35 battery driver"
+ depends on (MACH_N30 || MACH_N35) && I2C
+ help
+ Say Y here to enable support for batteries on the Acer n30 family.
+
config BATTERY_PMU
tristate "Apple PMU battery"
depends on PPC32 && ADB_PMU
--- linux-3.1.6/drivers/power/Makefile.orig 2011-12-21 22:00:46.000000000 +0100
+++ linux-3.1.6/drivers/power/Makefile 2011-12-31 16:38:56.695337657 +0100
@@ -32,6 +32,7 @@
obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
obj-$(CONFIG_BATTERY_JZ4740) += jz4740-battery.o
obj-$(CONFIG_BATTERY_INTEL_MID) += intel_mid_battery.o
+obj-$(CONFIG_BATTERY_N30) += n30_battery.o
obj-$(CONFIG_CHARGER_ISP1704) += isp1704_charger.o
obj-$(CONFIG_CHARGER_MAX8903) += max8903_charger.o
obj-$(CONFIG_CHARGER_TWL4030) += twl4030_charger.o
--- linux-3.1.6/drivers/power/n30_battery.c.orig 2011-12-31 16:38:56.696337581 +0100
+++ linux-3.1.6/drivers/power/n30_battery.c 2011-12-31 16:38:56.696337581 +0100
@@ -0,0 +1,116 @@
+/* Acer n30 battery driver.
+ *
+ * The Acer n30 family has a battery controller which sits on the I2C
+ * bus and which can report the battery charge in percent. Two GPIO
+ * pins tells if the PDA is being powered from a charger or via USB.
+ *
+ * Copyright (c) 2008 Christer Weinigel <christer@weinigel.se>
+ *
+ * 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 <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+
+#include <mach/hardware.h>
+#include <mach/regs-gpio.h>
+
+#include <asm/mach-types.h>
+
+static int n30_battery_get_capacity(struct device *dev)
+{
+ u8 value;
+ struct i2c_adapter *adap;
+ struct i2c_msg msg[] = {
+ { .addr = 0x0b, .flags = I2C_M_RD, .buf = &value, .len = 1 }
+ };
+ int capacity = -EIO;
+
+ adap = i2c_get_adapter(0);
+ if (adap != NULL) {
+ if (i2c_transfer(adap, msg, 1) == 1)
+ capacity = value;
+ else
+ dev_err(dev, "failed to read capacity\n");
+ i2c_put_adapter(adap);
+ } else
+ dev_err(dev, "failed to get i2c adapter\n");
+
+ return capacity;
+}
+
+static int n30_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = n30_battery_get_capacity(psy->dev);
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static enum power_supply_property n30_battery_props[] = {
+ POWER_SUPPLY_PROP_CAPACITY,
+};
+
+static struct power_supply n30_battery = {
+ .name = "battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = n30_battery_props,
+ .num_properties = ARRAY_SIZE(n30_battery_props),
+ .get_property = n30_battery_get_property,
+ .use_for_apm = 1,
+};
+
+static int __devinit n30_battery_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ dev_info(&pdev->dev, "Acer n30 battery driver\n");
+
+ ret = power_supply_register(&pdev->dev, &n30_battery);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int n30_battery_remove(struct platform_device *pdev)
+{
+ power_supply_unregister(&n30_battery);
+ return 0;
+}
+
+static struct platform_driver n30_battery_driver = {
+ .driver = {
+ .name = "n30-battery",
+ },
+ .probe = n30_battery_probe,
+ .remove = n30_battery_remove,
+};
+
+static int __init n30_battery_init(void)
+{
+ return platform_driver_register(&n30_battery_driver);
+}
+
+static void __exit n30_battery_exit(void)
+{
+ platform_driver_unregister(&n30_battery_driver);
+}
+
+module_init(n30_battery_init);
+module_exit(n30_battery_exit);
+
+MODULE_AUTHOR("Christer Weinigel <christer@weinigel.se>");
+MODULE_DESCRIPTION("Acer n30 battery driver");
+MODULE_LICENSE("GPL");
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