[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 3503f523070b..e2f9834e2daa 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")