[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>

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));
 }