[ARM] pxa/z2: Add battery support into Zipit Z2

This patch adds support for the AER915 battery chip into Zipit Z2
platform file.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

arch/arm/mach-pxa/z2.c

@@ -17,6 +17,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/pwm_backlight.h>
+#include <linux/z2_battery.h>
 #include <linux/dma-mapping.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/libertas_spi.h>
@@ -451,6 +452,39 @@ static void __init z2_keys_init(void)
 static inline void z2_keys_init(void) {}
 #endif
 
+/******************************************************************************
+ * Battery
+ ******************************************************************************/
+#if defined(CONFIG_I2C_PXA) || defined(CONFIG_I2C_PXA_MODULE)
+static struct z2_battery_info batt_chip_info = {
+	.batt_I2C_bus	= 0,
+	.batt_I2C_addr	= 0x55,
+	.batt_I2C_reg	= 2,
+	.charge_gpio	= GPIO0_ZIPITZ2_AC_DETECT,
+	.min_voltage	= 2400000,
+	.max_voltage	= 3700000,
+	.batt_div	= 69,
+	.batt_mult	= 1000000,
+	.batt_tech	= POWER_SUPPLY_TECHNOLOGY_LION,
+	.batt_name	= "Z2",
+};
+
+static struct i2c_board_info __initdata z2_i2c_board_info[] = {
+	{
+		I2C_BOARD_INFO("aer915", 0x55),
+		.platform_data	= &batt_chip_info,
+	}
+};
+
+static void __init z2_i2c_init(void)
+{
+	pxa_set_i2c_info(NULL);
+	i2c_register_board_info(0, ARRAY_AND_SIZE(z2_i2c_board_info));
+}
+#else
+static inline void z2_i2c_init(void) {}
+#endif
+
 /******************************************************************************
  * SSP Devices - WiFi and LCD control
  ******************************************************************************/
@@ -579,12 +613,14 @@ static void __init z2_init(void)
 {
 	pxa2xx_mfp_config(ARRAY_AND_SIZE(z2_pin_config));
 
+	pxa_set_ffuart_info(NULL);
+	pxa_set_btuart_info(NULL);
+	pxa_set_stuart_info(NULL);
+
 	z2_lcd_init();
 	z2_mmc_init();
 	z2_mkp_init();
-
-	pxa_set_i2c_info(NULL);
-
+	z2_i2c_init();
 	z2_spi_init();
 	z2_nor_init();
 	z2_pwm_init();