[ARM] pxa/em-x270: add exeda GPIO extender and update GPIO mappings

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.miao@marvell.com>

1 files changed, 46 insertions, 18 deletions

diff --git a/arch/arm/mach-pxa/em-x270.c b/arch/arm/mach-pxa/em-x270.c
index 3503f52..e2f9834 100644
--- a/arch/arm/mach-pxa/em-x270.c
+++ b/arch/arm/mach-pxa/em-x270.c
@@ -28,6 +28,8 @@
 #include <linux/spi/libertas_spi.h>
 #include <linux/power_supply.h>
 #include <linux/apm-emulation.h>
+#include <linux/i2c.h>
+#include <linux/i2c/pca953x.h>
 
 #include <media/soc_camera.h>
 
@@ -52,15 +54,18 @@
 #define GPIO13_MMC_CD		(13)
 #define GPIO95_MMC_WP		(95)
 #define GPIO56_NAND_RB		(56)
+#define GPIO93_CAM_RESET	(93)
 
 /* eXeda specific GPIOs */
 #define GPIO114_MMC_CD		(114)
 #define GPIO20_NAND_RB		(20)
 #define GPIO38_SD_PWEN		(38)
+#define GPIO37_WLAN_RST		(37)
+#define GPIO95_TOUCHPAD_INT	(95)
+#define GPIO130_CAM_RESET	(130)
 
 /* common  GPIOs */
 #define GPIO11_NAND_CS		(11)
-#define GPIO93_CAM_RESET	(93)
 #define GPIO41_ETHIRQ		(41)
 #define EM_X270_ETHIRQ		IRQ_GPIO(GPIO41_ETHIRQ)
 #define GPIO115_WLAN_PWEN	(115)
@@ -69,6 +74,7 @@
 static int mmc_cd;
 static int nand_rb;
 static int dm9000_flags;
+static int cam_reset;
 
 static unsigned long common_pin_config[] = {
 	/* AC'97 */
@@ -180,7 +186,6 @@ static unsigned long common_pin_config[] = {
 
 	/* power controls */
 	GPIO20_GPIO	| MFP_LPM_DRIVE_LOW,	/* GPRS_PWEN */
-	GPIO93_GPIO	| MFP_LPM_DRIVE_LOW,	/* Camera reset */
 	GPIO115_GPIO	| MFP_LPM_DRIVE_LOW,	/* WLAN_PWEN */
 
 	/* NAND controls */
@@ -191,14 +196,16 @@ static unsigned long common_pin_config[] = {
 };
 
 static unsigned long em_x270_pin_config[] = {
-	GPIO13_GPIO,	/* MMC card detect */
-	GPIO56_GPIO,	/* NAND Ready/Busy */
-	GPIO95_GPIO,	/* MMC Write protect */
+	GPIO13_GPIO,				/* MMC card detect */
+	GPIO56_GPIO,				/* NAND Ready/Busy */
+	GPIO93_GPIO	| MFP_LPM_DRIVE_LOW,	/* Camera reset */
+	GPIO95_GPIO,				/* MMC Write protect */
 };
 
 static unsigned long exeda_pin_config[] = {
 	GPIO20_GPIO,				/* NAND Ready/Busy */
 	GPIO38_GPIO	| MFP_LPM_DRIVE_LOW,	/* SD slot power */
+	GPIO95_GPIO,				/* touchpad IRQ */
 	GPIO114_GPIO,				/* MMC card detect */
 };
 
@@ -863,26 +870,26 @@ static int em_x270_sensor_init(struct device *dev)
 {
 	int ret;
 
-	ret = gpio_request(GPIO93_CAM_RESET, "camera reset");
+	ret = gpio_request(cam_reset, "camera reset");
 	if (ret)
 		return ret;
 
-	gpio_direction_output(GPIO93_CAM_RESET, 0);
+	gpio_direction_output(cam_reset, 0);
 
 	em_x270_camera_ldo = regulator_get(NULL, "vcc cam");
 	if (em_x270_camera_ldo == NULL) {
-		gpio_free(GPIO93_CAM_RESET);
+		gpio_free(cam_reset);
 		return -ENODEV;
 	}
 
 	ret = regulator_enable(em_x270_camera_ldo);
 	if (ret) {
 		regulator_put(em_x270_camera_ldo);
-		gpio_free(GPIO93_CAM_RESET);
+		gpio_free(cam_reset);
 		return ret;
 	}
 
-	gpio_set_value(GPIO93_CAM_RESET, 1);
+	gpio_set_value(cam_reset, 1);
 
 	return 0;
 }
@@ -902,7 +909,7 @@ static int em_x270_sensor_power(struct device *dev, int on)
 	if (on == is_on)
 		return 0;
 
-	gpio_set_value(GPIO93_CAM_RESET, !on);
+	gpio_set_value(cam_reset, !on);
 
 	if (on)
 		ret = regulator_enable(em_x270_camera_ldo);
@@ -912,7 +919,7 @@ static int em_x270_sensor_power(struct device *dev, int on)
 	if (ret)
 		return ret;
 
-	gpio_set_value(GPIO93_CAM_RESET, on);
+	gpio_set_value(cam_reset, on);
 
 	return 0;
 }
@@ -929,13 +936,8 @@ static struct i2c_board_info em_x270_i2c_cam_info[] = {
 	},
 };
 
-static struct i2c_pxa_platform_data em_x270_i2c_info = {
-	.fast_mode = 1,
-};
-
 static void  __init em_x270_init_camera(void)
 {
-	pxa_set_i2c_info(&em_x270_i2c_info);
 	i2c_register_board_info(0, ARRAY_AND_SIZE(em_x270_i2c_cam_info));
 	pxa_set_camera_info(&em_x270_camera_platform_data);
 }
@@ -1069,6 +1071,29 @@ static void __init em_x270_init_da9030(void)
 	i2c_register_board_info(1, &em_x270_i2c_pmic_info, 1);
 }
 
+static struct pca953x_platform_data exeda_gpio_ext_pdata = {
+	.gpio_base = 128,
+};
+
+static struct i2c_board_info exeda_i2c_info[] = {
+	{
+		I2C_BOARD_INFO("pca9555", 0x21),
+		.platform_data = &exeda_gpio_ext_pdata,
+	},
+};
+
+static struct i2c_pxa_platform_data em_x270_i2c_info = {
+	.fast_mode = 1,
+};
+
+static void __init em_x270_init_i2c(void)
+{
+	pxa_set_i2c_info(&em_x270_i2c_info);
+
+	if (machine_is_exeda())
+		i2c_register_board_info(0, ARRAY_AND_SIZE(exeda_i2c_info));
+}
+
 static void __init em_x270_module_init(void)
 {
 	pr_info("%s\n", __func__);
@@ -1077,6 +1102,7 @@ static void __init em_x270_module_init(void)
 	mmc_cd = GPIO13_MMC_CD;
 	nand_rb = GPIO56_NAND_RB;
 	dm9000_flags = DM9000_PLATF_32BITONLY;
+	cam_reset = GPIO93_CAM_RESET;
 }
 
 static void __init em_x270_exeda_init(void)
@@ -1087,6 +1113,7 @@ static void __init em_x270_exeda_init(void)
 	mmc_cd = GPIO114_MMC_CD;
 	nand_rb = GPIO20_NAND_RB;
 	dm9000_flags = DM9000_PLATF_16BITONLY;
+	cam_reset = GPIO130_CAM_RESET;
 }
 
 static void __init em_x270_init(void)
@@ -1111,8 +1138,9 @@ static void __init em_x270_init(void)
 	em_x270_init_keypad();
 	em_x270_init_gpio_keys();
 	em_x270_init_ac97();
-	em_x270_init_camera();
 	em_x270_init_spi();
+	em_x270_init_i2c();
+	em_x270_init_camera();
 }
 
 MACHINE_START(EM_X270, "Compulab EM-X270")