linux-kernel - [PATCH 2/2] Exynos4 NURI: add MAX17042 fuel gauge

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Message-id: <1308215372-17420-2-git-send-email-myungjoo.ham@samsung.com>
Date:	Thu, 16 Jun 2011 18:09:32 +0900
From:	MyungJoo Ham <myungjoo.ham@...sung.com>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	linux-kernel@...r.kernel.org,
	Russell King <linux@....linux.org.uk>,
	Kukjin Kim <kgene.kim@...sung.com>, kyungmin.park@...sung.com,
	myungjoo.ham@...il.com, dg77.kim@...sung.com
Subject: [PATCH 2/2] Exynos4 NURI: add MAX17042 fuel gauge

Signed-off-by: MyungJoo Ham <myungjoo.ham@...sung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
---
 arch/arm/mach-exynos4/mach-nuri.c |   35 +++++++++++++++++++++++++++++++++++
 1 files changed, 35 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-exynos4/mach-nuri.c b/arch/arm/mach-exynos4/mach-nuri.c
index c8c2431..b8c0c5d 100644
--- a/arch/arm/mach-exynos4/mach-nuri.c
+++ b/arch/arm/mach-exynos4/mach-nuri.c
@@ -13,8 +13,10 @@
 #include <linux/input.h>
 #include <linux/i2c.h>
 #include <linux/i2c/atmel_mxt_ts.h>
+#include <linux/i2c-gpio.h>
 #include <linux/gpio_keys.h>
 #include <linux/gpio.h>
+#include <linux/power/max17042_battery.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/fixed.h>
 #include <linux/mfd/max8997.h>
@@ -983,6 +985,7 @@ static struct max8997_platform_data nuri_max8997_pdata = {
 };
 
 #define NURI_PMIC_GPIO		EXYNOS4_GPX0(7)
+#define NURI_FUELGAUGE_GPIO	EXYNOS4_GPX2(3)
 static void __init nuri_pmic_init(void)
 {
 	int gpio;
@@ -992,6 +995,11 @@ static void __init nuri_pmic_init(void)
 	gpio_request(gpio, "AP_PMIC_IRQ");
 	s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(0xf));
 	s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+
+	gpio = NURI_FUELGAUGE_GPIO;
+	gpio_request(gpio, "FUEL_ALERT");
+	s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(0xf));
+	s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
 }
 
 /* GPIO I2C 5 (PMIC) */
@@ -1003,6 +1011,30 @@ static struct i2c_board_info i2c5_devs[] __initdata = {
 	},
 };
 
+static struct max17042_platform_data nuri_battery_platform_data = {
+	.enable_current_sense = false,
+};
+
+/* GPIO I2C 9 (Fuel Gauge) */
+static struct i2c_gpio_platform_data i2c9_gpio_data = {
+	.sda_pin		= EXYNOS4_GPY4(0),      /* XM0ADDR_8 */
+	.scl_pin		= EXYNOS4_GPY4(1),      /* XM0ADDR_9 */
+};
+static struct platform_device i2c9_gpio = {
+	.name			= "i2c-gpio",
+	.id			= 9,
+	.dev			= {
+		.platform_data	= &i2c9_gpio_data,
+	},
+};
+enum { I2C9_MAX17042};
+static struct i2c_board_info i2c9_devs[] __initdata = {
+	[I2C9_MAX17042] = {
+		I2C_BOARD_INFO("max17042", 0x36),
+		.platform_data = &nuri_battery_platform_data,
+	},
+};
+
 /* USB EHCI */
 static struct s5p_ehci_platdata nuri_ehci_pdata;
 
@@ -1024,6 +1056,7 @@ static struct platform_device *nuri_devices[] __initdata = {
 	&s5p_device_ehci,
 	&s3c_device_i2c3,
 	&s3c_device_i2c5,
+	&i2c9_gpio,
 
 	/* NURI Devices */
 	&nuri_gpio_keys,
@@ -1050,6 +1083,8 @@ static void __init nuri_machine_init(void)
 	s3c_i2c5_set_platdata(NULL);
 	i2c5_devs[I2C5_MAX8997].irq = gpio_to_irq(NURI_PMIC_GPIO);
 	i2c_register_board_info(5, i2c5_devs, ARRAY_SIZE(i2c5_devs));
+	i2c9_devs[I2C9_MAX17042].irq = gpio_to_irq(NURI_FUELGAUGE_GPIO);
+	i2c_register_board_info(9, i2c9_devs, ARRAY_SIZE(i2c9_devs));
 
 	nuri_ehci_init();
 	clk_xusbxti.rate = 24000000;
-- 
1.7.4.1

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