[PATCH 3/3] PalmZ72: Add support for OV9640 camera sensor
Marek Vasut
marek.vasut at gmail.com
Sat Aug 22 02:52:06 EDT 2009
From 777212ce6d3bacea76281aa3d74839a3c38b32a4 Mon Sep 17 00:00:00 2001
From: Marek Vasut <marek.vasut at gmail.com>
Date: Sat, 22 Aug 2009 05:15:10 +0200
Subject: [PATCH 3/3] PalmZ72: Add support for OV9640 camera sensor
Signed-off-by: Marek Vasut <marek.vasut at gmail.com>
---
arch/arm/mach-pxa/include/mach/palmz72.h | 5 +
arch/arm/mach-pxa/palmz72.c | 126
+++++++++++++++++++++++++++++-
2 files changed, 130 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-pxa/include/mach/palmz72.h b/arch/arm/mach-
pxa/include/mach/palmz72.h
index 2806ef6..745fa3c 100644
--- 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 c3645aa..e4449ad 100644
--- a/arch/arm/mach-pxa/palmz72.c
+++ b/arch/arm/mach-pxa/palmz72.c
@@ -30,6 +30,7 @@
#include <linux/wm97xx_batt.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>
@@ -44,8 +45,10 @@
#include <mach/pxa27x_keypad.h>
#include <mach/udc.h>
#include <mach/palmasoc.h>
-
#include <mach/pm.h>
+#include <mach/camera.h>
+
+#include <media/soc_camera.h>
#include "generic.h"
#include "devices.h"
@@ -120,6 +123,28 @@ 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,
+ GPIO57_GPIO,
+ GPIO91_GPIO,
+
+ /* I2C */
+ GPIO117_GPIO, /* I2C_SCL */
+ GPIO118_GPIO, /* I2C_SDA */
+
/* Misc. */
GPIO0_GPIO | WAKEUP_ON_LEVEL_HIGH, /* power detect */
GPIO88_GPIO, /* green led */
@@ -493,6 +518,70 @@ static struct pxafb_mach_info palmz72_lcd_screen = {
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};
+/******************************************************************************
+ * SoC Camera
+
******************************************************************************/
+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 __initdata 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,
+ .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,
+ }
+};
+
+struct platform_device palmz72_camera = {
+ .name = "soc-camera-pdrv",
+ .id = -1,
+ .dev = {
+ .platform_data = &palmz72_iclink,
+ },
+};
+
+
#ifdef CONFIG_PM
/* We have some black magic here
@@ -576,6 +665,8 @@ static struct platform_device *devices[] __initdata = {
&palmz72_asoc,
&power_supply,
&palmz72_gpio_vbus,
+ &palmz72_i2c_bus_device,
+ &palmz72_camera,
};
/* setup udc GPIOs initial state */
@@ -587,10 +678,41 @@ static void __init palmz72_udc_init(void)
}
}
+/* 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 up later to bring the module up fast. */
+static inline void __init palmz72_cam_init(void)
+{
+ if (gpio_request(GPIO_NR_PALMZ72_CAM_PWDN, "Camera PWDN"))
+ goto err1;
+ if (gpio_request(GPIO_NR_PALMZ72_CAM_RESET, "Camera RESET"))
+ goto err2;
+ if (gpio_request(GPIO_NR_PALMZ72_CAM_POWER, "Camera DVDD"))
+ goto err3;
+ if (gpio_direction_output(GPIO_NR_PALMZ72_CAM_POWER, 1))
+ goto err4;
+ if (gpio_direction_output(GPIO_NR_PALMZ72_CAM_RESET, 0))
+ goto err4;
+ if (gpio_direction_output(GPIO_NR_PALMZ72_CAM_PWDN, 0))
+ goto err4;
+ return;
+
+err4:
+ gpio_free(GPIO_NR_PALMZ72_CAM_POWER);
+err3:
+ gpio_free(GPIO_NR_PALMZ72_CAM_RESET);
+err2:
+ gpio_free(GPIO_NR_PALMZ72_CAM_PWDN);
+err1:
+ printk(KERN_ERR "Camera GPIO init failed!\n");
+ return;
+}
+
static void __init palmz72_init(void)
{
pxa2xx_mfp_config(ARRAY_AND_SIZE(palmz72_pin_config));
+ palmz72_cam_init();
set_pxa_fb_info(&palmz72_lcd_screen);
pxa_set_mci_info(&palmz72_mci_platform_data);
palmz72_udc_init();
@@ -599,6 +721,8 @@ static void __init palmz72_init(void)
pxa_set_keypad_info(&palmz72_keypad_platform_data);
wm97xx_bat_set_pdata(&wm97xx_batt_pdata);
+ pxa_set_camera_info(&palmz72_pxacamera_platform_data);
+
platform_add_devices(devices, ARRAY_SIZE(devices));
}
--
1.6.3.3
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