ARM: pxa: PalmZ72: Add OV9640 camera support

Rework of patch from 2009:
PalmZ72: Add support for OV9640 camera sensor

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>

diff --git a/arch/arm/mach-pxa/include/mach/palmz72.h b/arch/arm/mach-pxa/include/mach/palmz72.h
index 2bbcf70..0d4700a 100644 (file)
--- a/arch/arm/mach-pxa/include/mach/palmz72.h
+++ b/arch/arm/mach-pxa/include/mach/palmz72.h
@@ -44,6 +44,11 @@
 #define GPIO_NR_PALMZ72_BT_POWER               17
 #define GPIO_NR_PALMZ72_BT_RESET               83
 
+/* Camera */
+#define GPIO_NR_PALMZ72_CAM_PWDN               56
+#define GPIO_NR_PALMZ72_CAM_RESET              57
+#define GPIO_NR_PALMZ72_CAM_POWER              91
+
 /** Initial values **/
 
 /* Battery */

diff --git a/arch/arm/mach-pxa/palmz72.c b/arch/arm/mach-pxa/palmz72.c
index 7bf4017..27a8e6d 100644 (file)
--- a/arch/arm/mach-pxa/palmz72.c
+++ b/arch/arm/mach-pxa/palmz72.c
@@ -30,6 +30,7 @@
 #include <linux/wm97xx.h>
 #include <linux/power_supply.h>
 #include <linux/usb/gpio_vbus.h>
+#include <linux/i2c-gpio.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -47,6 +48,9 @@
 #include <mach/palm27x.h>
 
 #include <mach/pm.h>
+#include <mach/camera.h>
+
+#include <media/soc_camera.h>
 
 #include "generic.h"
 #include "devices.h"
@@ -103,6 +107,28 @@ static unsigned long palmz72_pin_config[] __initdata = {
        GPIO22_GPIO,    /* LCD border color */
        GPIO96_GPIO,    /* lcd power */
 
+       /* PXA Camera */
+       GPIO81_CIF_DD_0,
+       GPIO48_CIF_DD_5,
+       GPIO50_CIF_DD_3,
+       GPIO51_CIF_DD_2,
+       GPIO52_CIF_DD_4,
+       GPIO53_CIF_MCLK,
+       GPIO54_CIF_PCLK,
+       GPIO55_CIF_DD_1,
+       GPIO84_CIF_FV,
+       GPIO85_CIF_LV,
+       GPIO93_CIF_DD_6,
+       GPIO108_CIF_DD_7,
+
+       GPIO56_GPIO,    /* OV9640 Powerdown */
+       GPIO57_GPIO,    /* OV9640 Reset */
+       GPIO91_GPIO,    /* OV9640 Power */
+
+       /* I2C */
+       GPIO117_GPIO,   /* I2C_SCL */
+       GPIO118_GPIO,   /* I2C_SDA */
+
        /* Misc. */
        GPIO0_GPIO      | WAKEUP_ON_LEVEL_HIGH, /* power detect */
        GPIO88_GPIO,                            /* green led */
@@ -253,6 +279,106 @@ static int __init palmz72_pm_init(void)
 device_initcall(palmz72_pm_init);
 #endif
 
+/******************************************************************************
+ * SoC Camera
+ ******************************************************************************/
+#if defined(CONFIG_SOC_CAMERA_OV9640) || \
+       defined(CONFIG_SOC_CAMERA_OV9640_MODULE)
+static struct pxacamera_platform_data palmz72_pxacamera_platform_data = {
+       .flags          = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 |
+                       PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN,
+       .mclk_10khz     = 2600,
+};
+
+/* Board I2C devices. */
+static struct i2c_board_info palmz72_i2c_device[] = {
+       {
+               I2C_BOARD_INFO("ov9640", 0x30),
+       }
+};
+
+static int palmz72_camera_power(struct device *dev, int power)
+{
+       gpio_set_value(GPIO_NR_PALMZ72_CAM_PWDN, !power);
+       mdelay(50);
+       return 0;
+}
+
+static int palmz72_camera_reset(struct device *dev)
+{
+       gpio_set_value(GPIO_NR_PALMZ72_CAM_RESET, 1);
+       mdelay(50);
+       gpio_set_value(GPIO_NR_PALMZ72_CAM_RESET, 0);
+       mdelay(50);
+       return 0;
+}
+
+static struct soc_camera_link palmz72_iclink = {
+       .bus_id         = 0, /* Match id in pxa27x_device_camera in device.c */
+       .board_info     = &palmz72_i2c_device[0],
+       .i2c_adapter_id = 0,
+       .module_name    = "ov96xx",
+       .power          = &palmz72_camera_power,
+       .reset          = &palmz72_camera_reset,
+       .flags          = SOCAM_DATAWIDTH_8,
+};
+
+static struct i2c_gpio_platform_data palmz72_i2c_bus_data = {
+       .sda_pin        = 118,
+       .scl_pin        = 117,
+       .udelay         = 10,
+       .timeout        = 100,
+};
+
+static struct platform_device palmz72_i2c_bus_device = {
+       .name           = "i2c-gpio",
+       .id             = 0, /* we use this as a replacement for i2c-pxa */
+       .dev            = {
+               .platform_data  = &palmz72_i2c_bus_data,
+       }
+};
+
+static struct platform_device palmz72_camera = {
+       .name   = "soc-camera-pdrv",
+       .id     = -1,
+       .dev    = {
+               .platform_data  = &palmz72_iclink,
+       },
+};
+
+/* Here we request the camera GPIOs and configure them. We power up the camera
+ * module, deassert the reset pin, but put it into powerdown (low to no power
+ * consumption) mode. This allows us to later bring the module up fast. */
+static struct gpio palmz72_camera_gpios[] = {
+       { GPIO_NR_PALMZ72_CAM_POWER,    GPIOF_INIT_HIGH,"Camera DVDD" },
+       { GPIO_NR_PALMZ72_CAM_RESET,    GPIOF_INIT_LOW, "Camera RESET" },
+       { GPIO_NR_PALMZ72_CAM_PWDN,     GPIOF_INIT_LOW, "Camera PWDN" },
+};
+
+static inline void __init palmz72_cam_gpio_init(void)
+{
+       int ret;
+
+       ret = gpio_request_array(ARRAY_AND_SIZE(palmz72_camera_gpios));
+       if (!ret)
+               gpio_free_array(ARRAY_AND_SIZE(palmz72_camera_gpios));
+       else
+               printk(KERN_ERR "Camera GPIO init failed!\n");
+
+       return;
+}
+
+static void __init palmz72_camera_init(void)
+{
+       palmz72_cam_gpio_init();
+       pxa_set_camera_info(&palmz72_pxacamera_platform_data);
+       platform_device_register(&palmz72_i2c_bus_device);
+       platform_device_register(&palmz72_camera);
+}
+#else
+static inline void palmz72_camera_init(void) {}
+#endif
+
 /******************************************************************************
  * Machine init
  ******************************************************************************/
@@ -276,6 +402,7 @@ static void __init palmz72_init(void)
        palm27x_pmic_init();
        palmz72_kpc_init();
        palmz72_leds_init();
+       palmz72_camera_init();
 }
 
 MACHINE_START(PALMZ72, "Palm Zire72")