[ARM] pxa/ezx: add camera support for A780 and A910 EZX phones

Signed-off-by: Bart Visscher <bartv@thisnet.nl>
Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

1 files changed, 170 insertions, 4 deletions

diff --git a/arch/arm/mach-pxa/ezx.c b/arch/arm/mach-pxa/ezx.c
index 48c17372bc1c..320e2f8c599e 100644
--- a/arch/arm/mach-pxa/ezx.c
+++ b/arch/arm/mach-pxa/ezx.c
@@ -17,8 +17,11 @@
 #include <linux/delay.h>
 #include <linux/pwm_backlight.h>
 #include <linux/input.h>
+#include <linux/gpio.h>
 #include <linux/gpio_keys.h>
 
+#include <media/soc_camera.h>
+
 #include <asm/setup.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -29,6 +32,7 @@
 #include <plat/i2c.h>
 #include <mach/hardware.h>
 #include <mach/pxa27x_keypad.h>
+#include <mach/camera.h>
 
 #include "devices.h"
 #include "generic.h"
@@ -38,6 +42,9 @@
 #define GPIO15_A910_FLIP_LID            15
 #define GPIO12_E680_LOCK_SWITCH         12
 #define GPIO15_E6_LOCK_SWITCH           15
+#define GPIO50_nCAM_EN                  50
+#define GPIO19_GEN1_CAM_RST             19
+#define GPIO28_GEN2_CAM_RST             28
 
 static struct platform_pwm_backlight_data ezx_backlight_data = {
         .pwm_id         = 0,
@@ -191,8 +198,8 @@ static unsigned long gen1_pin_config[] __initdata = {
         GPIO94_CIF_DD_5,
         GPIO17_CIF_DD_6,
         GPIO108_CIF_DD_7,
-        GPIO50_GPIO,                            /* CAM_EN */
-        GPIO19_GPIO,                            /* CAM_RST */
+        GPIO50_GPIO | MFP_LPM_DRIVE_HIGH,       /* CAM_EN */
+        GPIO19_GPIO | MFP_LPM_DRIVE_HIGH,       /* CAM_RST */
 
         /* EMU */
         GPIO120_GPIO,                           /* EMU_MUX1 */
@@ -248,8 +255,8 @@ static unsigned long gen2_pin_config[] __initdata = {
         GPIO48_CIF_DD_5,
         GPIO93_CIF_DD_6,
         GPIO12_CIF_DD_7,
-        GPIO50_GPIO,                            /* CAM_EN */
-        GPIO28_GPIO,                            /* CAM_RST */
+        GPIO50_GPIO | MFP_LPM_DRIVE_HIGH,       /* CAM_EN */
+        GPIO28_GPIO | MFP_LPM_DRIVE_HIGH,       /* CAM_RST */
         GPIO17_GPIO,                            /* CAM_FLASH */
 };
 #endif
@@ -683,6 +690,81 @@ static struct platform_device a780_gpio_keys = {
         },
 };
 
+/* camera */
+static int a780_camera_init(void)
+{
+        int err;
+
+        /*
+         * GPIO50_nCAM_EN is active low
+         * GPIO19_GEN1_CAM_RST is active on rising edge
+         */
+        err = gpio_request(GPIO50_nCAM_EN, "nCAM_EN");
+        if (err) {
+                pr_err("%s: Failed to request nCAM_EN\n", __func__);
+                goto fail;
+        }
+
+        err = gpio_request(GPIO19_GEN1_CAM_RST, "CAM_RST");
+        if (err) {
+                pr_err("%s: Failed to request CAM_RST\n", __func__);
+                goto fail_gpio_cam_rst;
+        }
+
+        gpio_direction_output(GPIO50_nCAM_EN, 1);
+        gpio_direction_output(GPIO19_GEN1_CAM_RST, 0);
+
+        return 0;
+
+fail_gpio_cam_rst:
+        gpio_free(GPIO50_nCAM_EN);
+fail:
+        return err;
+}
+
+static int a780_camera_power(struct device *dev, int on)
+{
+        gpio_set_value(GPIO50_nCAM_EN, !on);
+        return 0;
+}
+
+static int a780_camera_reset(struct device *dev)
+{
+        gpio_set_value(GPIO19_GEN1_CAM_RST, 0);
+        msleep(10);
+        gpio_set_value(GPIO19_GEN1_CAM_RST, 1);
+
+        return 0;
+}
+
+struct pxacamera_platform_data a780_pxacamera_platform_data = {
+        .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 |
+                PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN,
+        .mclk_10khz = 5000,
+};
+
+static struct i2c_board_info a780_camera_i2c_board_info = {
+        I2C_BOARD_INFO("mt9m111", 0x5d),
+};
+
+static struct soc_camera_link a780_iclink = {
+        .bus_id         = 0,
+        .flags          = SOCAM_SENSOR_INVERT_PCLK,
+        .i2c_adapter_id = 0,
+        .board_info     = &a780_camera_i2c_board_info,
+        .module_name    = "mt9m111",
+        .power          = a780_camera_power,
+        .reset          = a780_camera_reset,
+};
+
+static struct platform_device a780_camera = {
+        .name   = "soc-camera-pdrv",
+        .id     = 0,
+        .dev    = {
+                .platform_data = &a780_iclink,
+        },
+};
+
 static struct platform_device *a780_devices[] __initdata = {
         &a780_gpio_keys,
 };
@@ -703,6 +785,11 @@ static void __init a780_init(void)
 
         pxa_set_keypad_info(&a780_keypad_platform_data);
 
+        if (a780_camera_init() == 0) {
+                pxa_set_camera_info(&a780_pxacamera_platform_data);
+                platform_device_register(&a780_camera);
+        }
+
         platform_add_devices(ARRAY_AND_SIZE(ezx_devices));
         platform_add_devices(ARRAY_AND_SIZE(a780_devices));
 }
@@ -876,6 +963,80 @@ static struct platform_device a910_gpio_keys = {
         },
 };
 
+/* camera */
+static int a910_camera_init(void)
+{
+        int err;
+
+        /*
+         * GPIO50_nCAM_EN is active low
+         * GPIO28_GEN2_CAM_RST is active on rising edge
+         */
+        err = gpio_request(GPIO50_nCAM_EN, "nCAM_EN");
+        if (err) {
+                pr_err("%s: Failed to request nCAM_EN\n", __func__);
+                goto fail;
+        }
+
+        err = gpio_request(GPIO28_GEN2_CAM_RST, "CAM_RST");
+        if (err) {
+                pr_err("%s: Failed to request CAM_RST\n", __func__);
+                goto fail_gpio_cam_rst;
+        }
+
+        gpio_direction_output(GPIO50_nCAM_EN, 1);
+        gpio_direction_output(GPIO28_GEN2_CAM_RST, 0);
+
+        return 0;
+
+fail_gpio_cam_rst:
+        gpio_free(GPIO50_nCAM_EN);
+fail:
+        return err;
+}
+
+static int a910_camera_power(struct device *dev, int on)
+{
+        gpio_set_value(GPIO50_nCAM_EN, !on);
+        return 0;
+}
+
+static int a910_camera_reset(struct device *dev)
+{
+        gpio_set_value(GPIO28_GEN2_CAM_RST, 0);
+        msleep(10);
+        gpio_set_value(GPIO28_GEN2_CAM_RST, 1);
+
+        return 0;
+}
+
+struct pxacamera_platform_data a910_pxacamera_platform_data = {
+        .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 |
+                PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN,
+        .mclk_10khz = 5000,
+};
+
+static struct i2c_board_info a910_camera_i2c_board_info = {
+        I2C_BOARD_INFO("mt9m111", 0x5d),
+};
+
+static struct soc_camera_link a910_iclink = {
+        .bus_id         = 0,
+        .i2c_adapter_id = 0,
+        .board_info     = &a910_camera_i2c_board_info,
+        .module_name    = "mt9m111",
+        .power          = a910_camera_power,
+        .reset          = a910_camera_reset,
+};
+
+static struct platform_device a910_camera = {
+        .name   = "soc-camera-pdrv",
+        .id     = 0,
+        .dev    = {
+                .platform_data = &a910_iclink,
+        },
+};
+
 static struct platform_device *a910_devices[] __initdata = {
         &a910_gpio_keys,
 };
@@ -896,6 +1057,11 @@ static void __init a910_init(void)
 
         pxa_set_keypad_info(&a910_keypad_platform_data);
 
+        if (a910_camera_init() == 0) {
+                pxa_set_camera_info(&a910_pxacamera_platform_data);
+                platform_device_register(&a910_camera);
+        }
+
         platform_add_devices(ARRAY_AND_SIZE(ezx_devices));
         platform_add_devices(ARRAY_AND_SIZE(a910_devices));
 }