[PATCH 5/5] LDP: Add support for built-in camera

* [PATCH 5/5] LDP: Add support for built-in camera
@ 2009-03-03 20:44 Aguirre Rodriguez, Sergio Alberto
  2009-03-03 21:40 ` Curran, Dominic
  2009-03-05  3:20 ` stanley.miao
  0 siblings, 2 replies; 8+ messages in thread
From: Aguirre Rodriguez, Sergio Alberto @ 2009-03-03 20:44 UTC (permalink / raw)
  To: linux-media, linux-omap
  Cc: Sakari Ailus, Tuukka.O Toivonen, Hiroshi DOYU,
	DongSoo(Nathaniel) Kim, MiaoStanley, Nagalla, Hari, Hiremath,
	Vaibhav, Lakhani, Amish, Menon, Nishanth

This patch adds support for the LDP builtin camera sensor:
 - Primary sensor (/dev/video4): OV3640 (CSI2).

It introduces also a new file for storing all camera sensors board
specific related functions, like other platforms do (N800 for example).

Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
---
 arch/arm/mach-omap2/Makefile                |    3 +-
 arch/arm/mach-omap2/board-ldp-camera.c      |  203 +++++++++++++++++++++++++++
 arch/arm/mach-omap2/board-ldp.c             |   17 +++
 arch/arm/plat-omap/include/mach/board-ldp.h |    1 +
 4 files changed, 223 insertions(+), 1 deletions(-)
 create mode 100644 arch/arm/mach-omap2/board-ldp-camera.c

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 8888ee6..097bc58 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -63,7 +63,8 @@ obj-$(CONFIG_MACH_OMAP3_BEAGLE)		+= board-omap3beagle.o \
 					   mmc-twl4030.o \
 					   twl4030-generic-scripts.o
 obj-$(CONFIG_MACH_OMAP_LDP)		+= board-ldp.o \
-					   mmc-twl4030.o
+					   mmc-twl4030.o \
+					   board-ldp-camera.o
 obj-$(CONFIG_MACH_OMAP_APOLLON)		+= board-apollon.o \
 					   board-apollon-mmc.o	\
 					   board-apollon-keys.o
diff --git a/arch/arm/mach-omap2/board-ldp-camera.c b/arch/arm/mach-omap2/board-ldp-camera.c
new file mode 100644
index 0000000..0db085c
--- /dev/null
+++ b/arch/arm/mach-omap2/board-ldp-camera.c
@@ -0,0 +1,203 @@
+/*
+ * linux/arch/arm/mach-omap2/board-ldp0-camera.c
+ *
+ * Copyright (C) 2009 Texas Instruments Inc.
+ * Sergio Aguirre <saaguirre@ti.com>
+ *
+ * Modified from mach-omap2/board-ldp.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifdef CONFIG_TWL4030_CORE
+
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+
+#include <linux/i2c/twl4030.h>
+
+#include <asm/io.h>
+
+#include <mach/gpio.h>
+
+static int cam_inited;
+#include <media/v4l2-int-device.h>
+#include <../drivers/media/video/omap34xxcam.h>
+#include <../drivers/media/video/isp/ispreg.h>
+
+#define LDPCAM_USE_XCLKB	1
+
+#define VAUX_1_8_V		0x05
+#define VAUX_DEV_GRP_P1		0x20
+#define VAUX_DEV_GRP_NONE	0x00
+
+#if defined(CONFIG_VIDEO_OV3640) || defined(CONFIG_VIDEO_OV3640_MODULE)
+#define OV3640_RESET_GPIO  	98
+#define OV3640_STANDBY_GPIO	7
+#include <media/ov3640.h>
+#include <../drivers/media/video/isp/ispcsi2.h>
+static	struct omap34xxcam_hw_config *hwc;
+#define OV3640_CSI2_CLOCK_POLARITY	0	/* +/- pin order */
+#define OV3640_CSI2_DATA0_POLARITY	0	/* +/- pin order */
+#define OV3640_CSI2_DATA1_POLARITY	0	/* +/- pin order */
+#define OV3640_CSI2_CLOCK_LANE		1	 /* Clock lane position: 1 */
+#define OV3640_CSI2_DATA0_LANE		2	 /* Data0 lane position: 2 */
+#define OV3640_CSI2_DATA1_LANE		3	 /* Data1 lane position: 3 */
+#define OV3640_CSI2_PHY_THS_TERM	4
+#define OV3640_CSI2_PHY_THS_SETTLE	14
+#define OV3640_CSI2_PHY_TCLK_TERM	0
+#define OV3640_CSI2_PHY_TCLK_MISS	1
+#define OV3640_CSI2_PHY_TCLK_SETTLE	14
+
+static struct omap34xxcam_sensor_config ov3640_hwc = {
+	.sensor_isp = 0,
+	.xclk = OMAP34XXCAM_XCLK_B,
+	.capture_mem = 2592 * 1944 * 2 * 2,
+	.ival_default	= { 1, 15 },
+};
+
+static struct isp_interface_config ov3640_if_config = {
+	.ccdc_par_ser = ISP_CSIA,
+	.dataline_shift = 0x0,
+	.hsvs_syncdetect = ISPCTRL_SYNC_DETECT_VSRISE,
+	.strobe = 0x0,
+	.prestrobe = 0x0,
+	.shutter = 0x0,
+	.prev_sph = 2,
+	.prev_slv = 1,
+	.wenlog = ISPCCDC_CFG_WENLOG_AND,
+	.wait_hs_vs = 2,
+	.u.csi.crc = 0x0,
+	.u.csi.mode = 0x0,
+	.u.csi.edge = 0x0,
+	.u.csi.signalling = 0x0,
+	.u.csi.strobe_clock_inv = 0x0,
+	.u.csi.vs_edge = 0x0,
+	.u.csi.channel = 0x1,
+	.u.csi.vpclk = 0x1,
+	.u.csi.data_start = 0x0,
+	.u.csi.data_size = 0x0,
+	.u.csi.format = V4L2_PIX_FMT_SGRBG10,
+};
+
+static int ov3640_sensor_set_prv_data(void *priv)
+{
+	hwc = priv;
+	hwc->u.sensor.xclk = ov3640_hwc.xclk;
+	hwc->u.sensor.sensor_isp = ov3640_hwc.sensor_isp;
+	hwc->dev_index = 1;
+	hwc->dev_minor = 4;
+	hwc->dev_type = OMAP34XXCAM_SLAVE_SENSOR;
+	return 0;
+}
+
+static int ov3640_sensor_power_set(enum v4l2_power power)
+{
+	struct isp_csi2_lanes_cfg lanecfg;
+	struct isp_csi2_phy_cfg phyconfig;
+	static enum v4l2_power previous_power = V4L2_POWER_OFF;
+
+	if (!cam_inited) {
+		printk(KERN_ERR "OV3640: Unable to control board GPIOs!\n");
+		return -EFAULT;
+	}
+
+	switch (power) {
+	case V4L2_POWER_ON:
+		if (previous_power == V4L2_POWER_OFF)
+			isp_csi2_reset();
+		lanecfg.clk.pol = OV3640_CSI2_CLOCK_POLARITY;
+		lanecfg.clk.pos = OV3640_CSI2_CLOCK_LANE;
+		lanecfg.data[0].pol = OV3640_CSI2_DATA0_POLARITY;
+		lanecfg.data[0].pos = OV3640_CSI2_DATA0_LANE;
+		lanecfg.data[1].pol = OV3640_CSI2_DATA1_POLARITY;
+		lanecfg.data[1].pos = OV3640_CSI2_DATA1_LANE;
+		lanecfg.data[2].pol = 0;
+		lanecfg.data[2].pos = 0;
+		lanecfg.data[3].pol = 0;
+		lanecfg.data[3].pos = 0;
+		isp_csi2_complexio_lanes_config(&lanecfg);
+		isp_csi2_complexio_lanes_update(true);
+
+		phyconfig.ths_term = OV3640_CSI2_PHY_THS_TERM;
+		phyconfig.ths_settle = OV3640_CSI2_PHY_THS_SETTLE;
+		phyconfig.tclk_term = OV3640_CSI2_PHY_TCLK_TERM;
+		phyconfig.tclk_miss = OV3640_CSI2_PHY_TCLK_MISS;
+		phyconfig.tclk_settle = OV3640_CSI2_PHY_TCLK_SETTLE;
+		isp_csi2_phy_config(&phyconfig);
+		isp_csi2_phy_update(true);
+
+		isp_configure_interface(&ov3640_if_config);
+
+		if (previous_power == V4L2_POWER_OFF) {
+			/* turn on analog power */
+			twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+					VAUX_1_8_V, TWL4030_VAUX4_DEDICATED);
+			twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+					VAUX_DEV_GRP_P1, TWL4030_VAUX4_DEV_GRP);
+			udelay(100);
+			/* Turn ON Omnivision sensor */
+			gpio_set_value(OV3640_RESET_GPIO, 1);
+			gpio_set_value(OV3640_STANDBY_GPIO, 0);
+			udelay(100);
+
+			/* RESET Omnivision sensor */
+			gpio_set_value(OV3640_RESET_GPIO, 0);
+			udelay(100);
+			gpio_set_value(OV3640_RESET_GPIO, 1);
+		}
+		break;
+	case V4L2_POWER_OFF:
+		/* Power Down Sequence */
+		isp_csi2_complexio_power(ISP_CSI2_POWER_OFF);
+		twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+				VAUX_DEV_GRP_NONE, TWL4030_VAUX4_DEV_GRP);
+		break;
+	case V4L2_POWER_STANDBY:
+		break;
+	}
+	previous_power = power;
+	return 0;
+}
+
+static u32 ov3640_sensor_set_xclk(u32 xclkfreq)
+{
+	return isp_set_xclk(xclkfreq, LDPCAM_USE_XCLKB);
+}
+
+struct ov3640_platform_data ldp_ov3640_platform_data = {
+	.power_set	 = ov3640_sensor_power_set,
+	.priv_data_set	 = ov3640_sensor_set_prv_data,
+	.set_xclk	 = ov3640_sensor_set_xclk,
+};
+
+#endif
+
+void __init ldp_cam_init(void)
+{
+	cam_inited = 0;
+	/* Request and configure gpio pins */
+	if (gpio_request(OV3640_RESET_GPIO, "ov3640_reset_gpio") != 0) {
+		printk(KERN_ERR "Could not request GPIO %d",
+					OV3640_RESET_GPIO);
+		return;
+	}
+	if (gpio_request(OV3640_STANDBY_GPIO, "ov3640_standby_gpio") != 0) {
+		printk(KERN_ERR "Could not request GPIO %d",
+					OV3640_STANDBY_GPIO);
+		gpio_free(OV3640_RESET_GPIO);
+		return;
+	}
+	/* set to output mode */
+	gpio_direction_output(OV3640_RESET_GPIO, true);
+	gpio_direction_output(OV3640_STANDBY_GPIO, true);
+	cam_inited = 1;
+}
+#else
+void __init ldp_cam_init(void)
+{
+}
+#endif
diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
index 1e1fd84..513aa8f 100644
--- a/arch/arm/mach-omap2/board-ldp.c
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -47,6 +47,13 @@
 #define SDP3430_SMC91X_CS	3
 #define CONFIG_DISABLE_HFCLK 1
 
+#include <media/v4l2-int-device.h>
+
+#if defined(CONFIG_VIDEO_OV3640) || defined(CONFIG_VIDEO_OV3640_MODULE)
+#include <media/ov3640.h>
+extern struct ov3640_platform_data ldp_ov3640_platform_data;
+#endif
+
 #define ENABLE_VAUX1_DEDICATED	0x03
 #define ENABLE_VAUX1_DEV_GRP	0x20
 
@@ -496,6 +503,15 @@ static struct i2c_board_info __initdata ldp_i2c_boardinfo[] = {
 	},
 };
 
+static struct i2c_board_info __initdata ldp_i2c_boardinfo_2[] = {
+#if defined(CONFIG_VIDEO_OV3640) || defined(CONFIG_VIDEO_OV3640_MODULE)
+	{
+		I2C_BOARD_INFO("ov3640", OV3640_I2C_ADDR),
+		.platform_data = &ldp_ov3640_platform_data,
+	},
+#endif
+};
+
 static int __init omap_i2c_init(void)
 {
 	omap_register_i2c_bus(1, 2600, ldp_i2c_boardinfo,
@@ -530,6 +546,7 @@ static void __init omap_ldp_init(void)
 	omap_serial_init();
 	usb_musb_init();
 	twl4030_mmc_init(mmc);
+	ldp_cam_init();
 }
 
 static void __init omap_ldp_map_io(void)
diff --git a/arch/arm/plat-omap/include/mach/board-ldp.h b/arch/arm/plat-omap/include/mach/board-ldp.h
index f233996..8e5d90b 100644
--- a/arch/arm/plat-omap/include/mach/board-ldp.h
+++ b/arch/arm/plat-omap/include/mach/board-ldp.h
@@ -30,6 +30,7 @@
 #define __ASM_ARCH_OMAP_LDP_H
 
 extern void twl4030_bci_battery_init(void);
+extern void ldp_cam_init(void);
 
 #define TWL4030_IRQNUM		INT_34XX_SYS_NIRQ
 #define LDP_SMC911X_CS         1
-- 
1.5.6.5


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