V4L/DVB (9488): Add ov772x driver

This patch adds ov772x driver that use soc_camera framework.
It was tested on SH Migo-r board.

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 966 insertions, 0 deletions

diff --git a/drivers/media/video/ov772x.c b/drivers/media/video/ov772x.c
new file mode 100644
index 000000000000..6206dff8d02d
--- /dev/null
+++ b/drivers/media/video/ov772x.c
@@ -0,0 +1,966 @@
+/*
+ * ov772x Camera Driver
+ *
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ * Kuninori Morimoto <morimoto.kuninori@renesas.com>
+ *
+ * Based on ov7670 and soc_camera_platform driver,
+ *
+ * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
+ * Copyright (C) 2008 Magnus Damm
+ * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-common.h>
+#include <media/soc_camera.h>
+#include <media/ov772x.h>
+
+/*
+ * register offset
+ */
+#define GAIN        0x00 /* AGC - Gain control gain setting */
+#define BLUE        0x01 /* AWB - Blue channel gain setting */
+#define RED         0x02 /* AWB - Red   channel gain setting */
+#define GREEN       0x03 /* AWB - Green channel gain setting */
+#define COM1        0x04 /* Common control 1 */
+#define BAVG        0x05 /* U/B Average Level */
+#define GAVG        0x06 /* Y/Gb Average Level */
+#define RAVG        0x07 /* V/R Average Level */
+#define AECH        0x08 /* Exposure Value - AEC MSBs */
+#define COM2        0x09 /* Common control 2 */
+#define PID         0x0A /* Product ID Number MSB */
+#define VER         0x0B /* Product ID Number LSB */
+#define COM3        0x0C /* Common control 3 */
+#define COM4        0x0D /* Common control 4 */
+#define COM5        0x0E /* Common control 5 */
+#define COM6        0x0F /* Common control 6 */
+#define AEC         0x10 /* Exposure Value */
+#define CLKRC       0x11 /* Internal clock */
+#define COM7        0x12 /* Common control 7 */
+#define COM8        0x13 /* Common control 8 */
+#define COM9        0x14 /* Common control 9 */
+#define COM10       0x15 /* Common control 10 */
+#define HSTART      0x17 /* Horizontal sensor size */
+#define HSIZE       0x18 /* Horizontal frame (HREF column) end high 8-bit */
+#define VSTART      0x19 /* Vertical frame (row) start high 8-bit */
+#define VSIZE       0x1A /* Vertical sensor size */
+#define PSHFT       0x1B /* Data format - pixel delay select */
+#define MIDH        0x1C /* Manufacturer ID byte - high */
+#define MIDL        0x1D /* Manufacturer ID byte - low  */
+#define LAEC        0x1F /* Fine AEC value */
+#define COM11       0x20 /* Common control 11 */
+#define BDBASE      0x22 /* Banding filter Minimum AEC value */
+#define DBSTEP      0x23 /* Banding filter Maximum Setp */
+#define AEW         0x24 /* AGC/AEC - Stable operating region (upper limit) */
+#define AEB         0x25 /* AGC/AEC - Stable operating region (lower limit) */
+#define VPT         0x26 /* AGC/AEC Fast mode operating region */
+#define HOUTSIZE    0x29 /* Horizontal data output size MSBs */
+#define EXHCH       0x2A /* Dummy pixel insert MSB */
+#define EXHCL       0x2B /* Dummy pixel insert LSB */
+#define VOUTSIZE    0x2C /* Vertical data output size MSBs */
+#define ADVFL       0x2D /* LSB of insert dummy lines in Vertical direction */
+#define ADVFH       0x2E /* MSG of insert dummy lines in Vertical direction */
+#define YAVE        0x2F /* Y/G Channel Average value */
+#define LUMHTH      0x30 /* Histogram AEC/AGC Luminance high level threshold */
+#define LUMLTH      0x31 /* Histogram AEC/AGC Luminance low  level threshold */
+#define HREF        0x32 /* Image start and size control */
+#define DM_LNL      0x33 /* Dummy line low  8 bits */
+#define DM_LNH      0x34 /* Dummy line high 8 bits */
+#define ADOFF_B     0x35 /* AD offset compensation value for B  channel */
+#define ADOFF_R     0x36 /* AD offset compensation value for R  channel */
+#define ADOFF_GB    0x37 /* AD offset compensation value for Gb channel */
+#define ADOFF_GR    0x38 /* AD offset compensation value for Gr channel */
+#define OFF_B       0x39 /* Analog process B  channel offset value */
+#define OFF_R       0x3A /* Analog process R  channel offset value */
+#define OFF_GB      0x3B /* Analog process Gb channel offset value */
+#define OFF_GR      0x3C /* Analog process Gr channel offset value */
+#define COM12       0x3D /* Common control 12 */
+#define COM13       0x3E /* Common control 13 */
+#define COM14       0x3F /* Common control 14 */
+#define COM15       0x40 /* Common control 15*/
+#define COM16       0x41 /* Common control 16 */
+#define TGT_B       0x42 /* BLC blue channel target value */
+#define TGT_R       0x43 /* BLC red  channel target value */
+#define TGT_GB      0x44 /* BLC Gb   channel target value */
+#define TGT_GR      0x45 /* BLC Gr   channel target value */
+#define LCC0        0x46 /* Lens correction control 0 */
+#define LCC1        0x47 /* Lens correction option 1 - X coordinate */
+#define LCC2        0x48 /* Lens correction option 2 - Y coordinate */
+#define LCC3        0x49 /* Lens correction option 3 */
+#define LCC4        0x4A /* Lens correction option 4 - radius of the circular */
+#define LCC5        0x4B /* Lens correction option 5 */
+#define LCC6        0x4C /* Lens correction option 6 */
+#define FIXGAIN     0x4D /* Analog fix gain amplifer */
+#define AREF0       0x4E /* Sensor reference control */
+#define AREF1       0x4F /* Sensor reference current control */
+#define AREF2       0x50 /* Analog reference control */
+#define AREF3       0x51 /* ADC    reference control */
+#define AREF4       0x52 /* ADC    reference control */
+#define AREF5       0x53 /* ADC    reference control */
+#define AREF6       0x54 /* Analog reference control */
+#define AREF7       0x55 /* Analog reference control */
+#define UFIX        0x60 /* U channel fixed value output */
+#define VFIX        0x61 /* V channel fixed value output */
+#define AW_BB_BLK   0x62 /* AWB option for advanced AWB */
+#define AW_B_CTRL0  0x63 /* AWB control byte 0 */
+#define DSP_CTRL1   0x64 /* DSP control byte 1 */
+#define DSP_CTRL2   0x65 /* DSP control byte 2 */
+#define DSP_CTRL3   0x66 /* DSP control byte 3 */
+#define DSP_CTRL4   0x67 /* DSP control byte 4 */
+#define AW_B_BIAS   0x68 /* AWB BLC level clip */
+#define AW_BCTRL1   0x69 /* AWB control  1 */
+#define AW_BCTRL2   0x6A /* AWB control  2 */
+#define AW_BCTRL3   0x6B /* AWB control  3 */
+#define AW_BCTRL4   0x6C /* AWB control  4 */
+#define AW_BCTRL5   0x6D /* AWB control  5 */
+#define AW_BCTRL6   0x6E /* AWB control  6 */
+#define AW_BCTRL7   0x6F /* AWB control  7 */
+#define AW_BCTRL8   0x70 /* AWB control  8 */
+#define AW_BCTRL9   0x71 /* AWB control  9 */
+#define AW_BCTRL10  0x72 /* AWB control 10 */
+#define AW_BCTRL11  0x73 /* AWB control 11 */
+#define AW_BCTRL12  0x74 /* AWB control 12 */
+#define AW_BCTRL13  0x75 /* AWB control 13 */
+#define AW_BCTRL14  0x76 /* AWB control 14 */
+#define AW_BCTRL15  0x77 /* AWB control 15 */
+#define AW_BCTRL16  0x78 /* AWB control 16 */
+#define AW_BCTRL17  0x79 /* AWB control 17 */
+#define AW_BCTRL18  0x7A /* AWB control 18 */
+#define AW_BCTRL19  0x7B /* AWB control 19 */
+#define AW_BCTRL20  0x7C /* AWB control 20 */
+#define AW_BCTRL21  0x7D /* AWB control 21 */
+#define GAM1        0x7E /* Gamma Curve  1st segment input end point */
+#define GAM2        0x7F /* Gamma Curve  2nd segment input end point */
+#define GAM3        0x80 /* Gamma Curve  3rd segment input end point */
+#define GAM4        0x81 /* Gamma Curve  4th segment input end point */
+#define GAM5        0x82 /* Gamma Curve  5th segment input end point */
+#define GAM6        0x83 /* Gamma Curve  6th segment input end point */
+#define GAM7        0x84 /* Gamma Curve  7th segment input end point */
+#define GAM8        0x85 /* Gamma Curve  8th segment input end point */
+#define GAM9        0x86 /* Gamma Curve  9th segment input end point */
+#define GAM10       0x87 /* Gamma Curve 10th segment input end point */
+#define GAM11       0x88 /* Gamma Curve 11th segment input end point */
+#define GAM12       0x89 /* Gamma Curve 12th segment input end point */
+#define GAM13       0x8A /* Gamma Curve 13th segment input end point */
+#define GAM14       0x8B /* Gamma Curve 14th segment input end point */
+#define GAM15       0x8C /* Gamma Curve 15th segment input end point */
+#define SLOP        0x8D /* Gamma curve highest segment slope */
+#define DNSTH       0x8E /* De-noise threshold */
+#define EDGE0       0x8F /* Edge enhancement control 0 */
+#define EDGE1       0x90 /* Edge enhancement control 1 */
+#define DNSOFF      0x91 /* Auto De-noise threshold control */
+#define EDGE2       0x92 /* Edge enhancement strength low  point control */
+#define EDGE3       0x93 /* Edge enhancement strength high point control */
+#define MTX1        0x94 /* Matrix coefficient 1 */
+#define MTX2        0x95 /* Matrix coefficient 2 */
+#define MTX3        0x96 /* Matrix coefficient 3 */
+#define MTX4        0x97 /* Matrix coefficient 4 */
+#define MTX5        0x98 /* Matrix coefficient 5 */
+#define MTX6        0x99 /* Matrix coefficient 6 */
+#define MTX_CTRL    0x9A /* Matrix control */
+#define BRIGHT      0x9B /* Brightness control */
+#define CNTRST      0x9C /* Contrast contrast */
+#define CNTRST_CTRL 0x9D /* Contrast contrast center */
+#define UVAD_J0     0x9E /* Auto UV adjust contrast 0 */
+#define UVAD_J1     0x9F /* Auto UV adjust contrast 1 */
+#define SCAL0       0xA0 /* Scaling control 0 */
+#define SCAL1       0xA1 /* Scaling control 1 */
+#define SCAL2       0xA2 /* Scaling control 2 */
+#define FIFODLYM    0xA3 /* FIFO manual mode delay control */
+#define FIFODLYA    0xA4 /* FIFO auto   mode delay control */
+#define SDE         0xA6 /* Special digital effect control */
+#define USAT        0xA7 /* U component saturation control */
+#define VSAT        0xA8 /* V component saturation control */
+#define HUE0        0xA9 /* Hue control 0 */
+#define HUE1        0xAA /* Hue control 1 */
+#define SIGN        0xAB /* Sign bit for Hue and contrast */
+#define DSPAUTO     0xAC /* DSP auto function ON/OFF control */
+
+/*
+ * register detail
+ */
+
+/* COM2 */
+#define SOFT_SLEEP_MODE 0x10	/* Soft sleep mode */
+				/* Output drive capability */
+#define OCAP_1x         0x00	/* 1x */
+#define OCAP_2x         0x01	/* 2x */
+#define OCAP_3x         0x02	/* 3x */
+#define OCAP_4x         0x03	/* 4x */
+
+/* COM3 */
+#define SWAP_MASK       0x38
+
+#define VFIMG_ON_OFF    0x80	/* Vertical flip image ON/OFF selection */
+#define HMIMG_ON_OFF    0x40	/* Horizontal mirror image ON/OFF selection */
+#define SWAP_RGB        0x20	/* Swap B/R  output sequence in RGB mode */
+#define SWAP_YUV        0x10	/* Swap Y/UV output sequence in YUV mode */
+#define SWAP_ML         0x08	/* Swap output MSB/LSB */
+				/* Tri-state option for output clock */
+#define NOTRI_CLOCK     0x04	/*   0: Tri-state    at this period */
+				/*   1: No tri-state at this period */
+				/* Tri-state option for output data */
+#define NOTRI_DATA      0x02	/*   0: Tri-state    at this period */
+				/*   1: No tri-state at this period */
+#define SCOLOR_TEST     0x01	/* Sensor color bar test pattern */
+
+/* COM4 */
+				/* PLL frequency control */
+#define PLL_BYPASS      0x00	/*  00: Bypass PLL */
+#define PLL_4x          0x40	/*  01: PLL 4x */
+#define PLL_6x          0x80	/*  10: PLL 6x */
+#define PLL_8x          0xc0	/*  11: PLL 8x */
+				/* AEC evaluate window */
+#define AEC_FULL        0x00	/*  00: Full window */
+#define AEC_1p2         0x10	/*  01: 1/2  window */
+#define AEC_1p4         0x20	/*  10: 1/4  window */
+#define AEC_2p3         0x30	/*  11: Low 2/3 window */
+
+/* COM5 */
+#define AFR_ON_OFF      0x80	/* Auto frame rate control ON/OFF selection */
+#define AFR_SPPED       0x40	/* Auto frame rate control speed slection */
+				/* Auto frame rate max rate control */
+#define AFR_NO_RATE     0x00	/*     No  reduction of frame rate */
+#define AFR_1p2         0x10	/*     Max reduction to 1/2 frame rate */
+#define AFR_1p4         0x20	/*     Max reduction to 1/4 frame rate */
+#define AFR_1p8         0x30	/* Max reduction to 1/8 frame rate */
+				/* Auto frame rate active point control */
+#define AF_2x           0x00	/*     Add frame when AGC reaches  2x gain */
+#define AF_4x           0x04	/*     Add frame when AGC reaches  4x gain */
+#define AF_8x           0x08	/*     Add frame when AGC reaches  8x gain */
+#define AF_16x          0x0c	/* Add frame when AGC reaches 16x gain */
+				/* AEC max step control */
+#define AEC_NO_LIMIT    0x01	/*   0 : AEC incease step has limit */
+				/*   1 : No limit to AEC increase step */
+
+/* COM7 */
+				/* SCCB Register Reset */
+#define SCCB_RESET      0x80	/*   0 : No change */
+				/*   1 : Resets all registers to default */
+				/* Resolution selection */
+#define SLCT_MASK       0x40	/*   Mask of VGA or QVGA */
+#define SLCT_VGA        0x00	/*   0 : VGA */
+#define SLCT_QVGA       0x40	/*   1 : QVGA */
+#define ITU656_ON_OFF   0x20	/* ITU656 protocol ON/OFF selection */
+				/* RGB output format control */
+#define FMT_GBR422      0x00	/*      00 : GBR 4:2:2 */
+#define FMT_RGB565      0x04	/*      01 : RGB 565 */
+#define FMT_RGB555      0x08	/*      10 : RGB 555 */
+#define FMT_RGB444      0x0c	/* 11 : RGB 444 */
+				/* Output format control */
+#define OFMT_YUV        0x00	/*      00 : YUV */
+#define OFMT_P_BRAW     0x01	/*      01 : Processed Bayer RAW */
+#define OFMT_RGB        0x02	/*      10 : RGB */
+#define OFMT_BRAW       0x03	/* 11 : Bayer RAW */
+
+/* COM8 */
+#define FAST_ALGO       0x80	/* Enable fast AGC/AEC algorithm */
+				/* AEC Setp size limit */
+#define UNLMT_STEP      0x40	/*   0 : Step size is limited */
+				/*   1 : Unlimited step size */
+#define BNDF_ON_OFF     0x20	/* Banding filter ON/OFF */
+#define AEC_BND         0x10	/* Enable AEC below banding value */
+#define AEC_ON_OFF      0x08	/* Fine AEC ON/OFF control */
+#define AGC_ON          0x04	/* AGC Enable */
+#define AWB_ON          0x02	/* AWB Enable */
+#define AEC_ON          0x01	/* AEC Enable */
+
+/* COM9 */
+#define BASE_AECAGC     0x80	/* Histogram or average based AEC/AGC */
+				/* Automatic gain ceiling - maximum AGC value */
+#define GAIN_2x         0x00	/*    000 :   2x */
+#define GAIN_4x         0x10	/*    001 :   4x */
+#define GAIN_8x         0x20	/*    010 :   8x */
+#define GAIN_16x        0x30	/* 011 :  16x */
+#define GAIN_32x        0x40	/*    100 :  32x */
+#define GAIN_64x        0x50	/* 101 :  64x */
+#define GAIN_128x       0x60	/* 110 : 128x */
+#define DROP_VSYNC      0x04	/* Drop VSYNC output of corrupt frame */
+#define DROP_HREF       0x02	/* Drop HREF  output of corrupt frame */
+
+/* COM11 */
+#define SGLF_ON_OFF     0x02	/* Single frame ON/OFF selection */
+#define SGLF_TRIG       0x01	/* Single frame transfer trigger */
+
+/* EXHCH */
+#define VSIZE_LSB       0x04	/* Vertical data output size LSB */
+
+/* DSP_CTRL1 */
+#define FIFO_ON         0x80	/* FIFO enable/disable selection */
+#define UV_ON_OFF       0x40	/* UV adjust function ON/OFF selection */
+#define YUV444_2_422    0x20	/* YUV444 to 422 UV channel option selection */
+#define CLR_MTRX_ON_OFF 0x10	/* Color matrix ON/OFF selection */
+#define INTPLT_ON_OFF   0x08	/* Interpolation ON/OFF selection */
+#define GMM_ON_OFF      0x04	/* Gamma function ON/OFF selection */
+#define AUTO_BLK_ON_OFF 0x02	/* Black defect auto correction ON/OFF */
+#define AUTO_WHT_ON_OFF 0x01	/* White define auto correction ON/OFF */
+
+/* DSP_CTRL3 */
+#define UV_MASK         0x80	/* UV output sequence option */
+#define UV_ON           0x80	/*   ON */
+#define UV_OFF          0x00	/*   OFF */
+#define CBAR_MASK       0x20	/* DSP Color bar mask */
+#define CBAR_ON         0x20	/*   ON */
+#define CBAR_OFF        0x00	/*   OFF */
+
+/* HSTART */
+#define HST_VGA         0x23
+#define HST_QVGA        0x3F
+
+/* HSIZE */
+#define HSZ_VGA         0xA0
+#define HSZ_QVGA        0x50
+
+/* VSTART */
+#define VST_VGA         0x07
+#define VST_QVGA        0x03
+
+/* VSIZE */
+#define VSZ_VGA         0xF0
+#define VSZ_QVGA        0x78
+
+/* HOUTSIZE */
+#define HOSZ_VGA        0xA0
+#define HOSZ_QVGA       0x50
+
+/* VOUTSIZE */
+#define VOSZ_VGA        0xF0
+#define VOSZ_QVGA       0x78
+
+/*
+ * bit configure (32 bit)
+ * this is used in struct ov772x_color_format :: option
+ */
+#define OP_UV       0x00000001
+#define OP_SWAP_RGB 0x00000002
+
+/*
+ * struct
+ */
+struct regval_list {
+	unsigned char reg_num;
+	unsigned char value;
+};
+
+struct ov772x_color_format {
+	char                     *name;
+	__u32                     fourcc;
+	const struct regval_list *regs;
+	unsigned int              option;
+};
+
+struct ov772x_win_size {
+	char                     *name;
+	__u32                     width;
+	__u32                     height;
+	unsigned char             com7_bit;
+	const struct regval_list *regs;
+};
+
+struct ov772x_priv {
+	struct ov772x_camera_info        *info;
+	struct i2c_client                *client;
+	struct soc_camera_device          icd;
+	const struct ov772x_color_format *fmt;
+	const struct ov772x_win_size     *win;
+};
+
+#define ENDMARKER { 0xff, 0xff }
+
+static const struct regval_list ov772x_default_regs[] =
+{
+	{ COM3,  0x00 },
+	{ COM4,  PLL_4x | 0x01 },
+	{ 0x16,  0x00 }, /* Mystery */
+	{ COM11, 0x10 }, /* Mystery */
+	{ 0x28,  0x00 }, /* Mystery */
+	{ HREF,  0x00 },
+	{ COM13, 0xe2 }, /* Mystery */
+	{ AREF0, 0xef },
+	{ AREF2, 0x60 },
+	{ AREF6, 0x7a },
+	ENDMARKER,
+};
+
+/*
+ * register setting for color format
+ */
+static const struct regval_list ov772x_RGB555_regs[] = {
+	{ COM7, FMT_RGB555 | OFMT_RGB },
+	ENDMARKER,
+};
+
+static const struct regval_list ov772x_RGB565_regs[] = {
+	{ COM7, FMT_RGB565 | OFMT_RGB },
+	ENDMARKER,
+};
+
+static const struct regval_list ov772x_YYUV_regs[] = {
+	{ COM3, SWAP_YUV },
+	{ COM7, OFMT_YUV },
+	ENDMARKER,
+};
+
+static const struct regval_list ov772x_UVYY_regs[] = {
+	{ COM7, OFMT_YUV },
+	ENDMARKER,
+};
+
+
+/*
+ * register setting for window size
+ */
+static const struct regval_list ov772x_qvga_regs[] = {
+	{ HSTART,   HST_QVGA },
+	{ HSIZE,    HSZ_QVGA },
+	{ VSTART,   VST_QVGA },
+	{ VSIZE,    VSZ_QVGA  },
+	{ HOUTSIZE, HOSZ_QVGA },
+	{ VOUTSIZE, VOSZ_QVGA },
+	ENDMARKER,
+};
+
+static const struct regval_list ov772x_vga_regs[] = {
+	{ HSTART,   HST_VGA },
+	{ HSIZE,    HSZ_VGA },
+	{ VSTART,   VST_VGA },
+	{ VSIZE,    VSZ_VGA },
+	{ HOUTSIZE, HOSZ_VGA },
+	{ VOUTSIZE, VOSZ_VGA },
+	ENDMARKER,
+};
+
+/*
+ * supported format list
+ */
+
+#define SETFOURCC(type) .name = (#type), .fourcc = (V4L2_PIX_FMT_ ## type)
+static const struct soc_camera_data_format ov772x_fmt_lists[] = {
+	{
+		SETFOURCC(YUYV),
+		.depth      = 16,
+		.colorspace = V4L2_COLORSPACE_JPEG,
+	},
+	{
+		SETFOURCC(YVYU),
+		.depth      = 16,
+		.colorspace = V4L2_COLORSPACE_JPEG,
+	},
+	{
+		SETFOURCC(UYVY),
+		.depth      = 16,
+		.colorspace = V4L2_COLORSPACE_JPEG,
+	},
+	{
+		SETFOURCC(RGB555),
+		.depth      = 16,
+		.colorspace = V4L2_COLORSPACE_SRGB,
+	},
+	{
+		SETFOURCC(RGB555X),
+		.depth      = 16,
+		.colorspace = V4L2_COLORSPACE_SRGB,
+	},
+	{
+		SETFOURCC(RGB565),
+		.depth      = 16,
+		.colorspace = V4L2_COLORSPACE_SRGB,
+	},
+	{
+		SETFOURCC(RGB565X),
+		.depth      = 16,
+		.colorspace = V4L2_COLORSPACE_SRGB,
+	},
+};
+
+/*
+ * color format list
+ */
+#define T_YUYV 0
+static const struct ov772x_color_format ov772x_cfmts[] = {
+	[T_YUYV] = {
+		SETFOURCC(YUYV),
+		.regs   = ov772x_YYUV_regs,
+	},
+	{
+		SETFOURCC(YVYU),
+		.regs   = ov772x_YYUV_regs,
+		.option = OP_UV,
+	},
+	{
+		SETFOURCC(UYVY),
+		.regs   = ov772x_UVYY_regs,
+	},
+	{
+		SETFOURCC(RGB555),
+		.regs   = ov772x_RGB555_regs,
+		.option = OP_SWAP_RGB,
+	},
+	{
+		SETFOURCC(RGB555X),
+		.regs   = ov772x_RGB555_regs,
+	},
+	{
+		SETFOURCC(RGB565),
+		.regs   = ov772x_RGB565_regs,
+		.option = OP_SWAP_RGB,
+	},
+	{
+		SETFOURCC(RGB565X),
+		.regs   = ov772x_RGB565_regs,
+	},
+};
+
+
+/*
+ * window size list
+ */
+#define VGA_WIDTH   640
+#define VGA_HEIGHT  480
+#define QVGA_WIDTH  320
+#define QVGA_HEIGHT 240
+#define MAX_WIDTH   VGA_WIDTH
+#define MAX_HEIGHT  VGA_HEIGHT
+
+static const struct ov772x_win_size ov772x_win_vga = {
+	.name     = "VGA",
+	.width    = VGA_WIDTH,
+	.height   = VGA_HEIGHT,
+	.com7_bit = SLCT_VGA,
+	.regs     = ov772x_vga_regs,
+};
+
+static const struct ov772x_win_size ov772x_win_qvga = {
+	.name     = "QVGA",
+	.width    = QVGA_WIDTH,
+	.height   = QVGA_HEIGHT,
+	.com7_bit = SLCT_QVGA,
+	.regs     = ov772x_qvga_regs,
+};
+
+
+/*
+ * general function
+ */
+
+static int ov772x_write_array(struct i2c_client        *client,
+			      const struct regval_list *vals)
+{
+	while (vals->reg_num != 0xff) {
+		int ret = i2c_smbus_write_byte_data(client,
+						    vals->reg_num,
+						    vals->value);
+		if (ret < 0)
+			return ret;
+		vals++;
+	}
+	return 0;
+}
+
+static int ov772x_mask_set(struct i2c_client *client,
+					  u8  command,
+					  u8  mask,
+					  u8  set)
+{
+	s32 val = i2c_smbus_read_byte_data(client, command);
+	val &= ~mask;
+	val |=  set;
+
+	return i2c_smbus_write_byte_data(client, command, val);
+}
+
+static int ov772x_reset(struct i2c_client *client)
+{
+	int ret = i2c_smbus_write_byte_data(client, COM7, SCCB_RESET);
+	msleep(1);
+	return ret;
+}
+
+/*
+ * soc_camera_ops function
+ */
+
+static int ov772x_init(struct soc_camera_device *icd)
+{
+	return 0;
+}
+
+static int ov772x_release(struct soc_camera_device *icd)
+{
+	return 0;
+}
+
+static int ov772x_start_capture(struct soc_camera_device *icd)
+{
+	struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+	int                 ret;
+
+
+	if (!priv->win)
+		priv->win = &ov772x_win_vga;
+	if (!priv->fmt)
+		priv->fmt = &ov772x_cfmts[T_YUYV];
+
+	/*
+	 * reset hardware
+	 */
+	ov772x_reset(priv->client);
+	ret = ov772x_write_array(priv->client, ov772x_default_regs);
+	if (ret < 0)
+		goto start_end;
+
+	/*
+	 * set color format
+	 */
+	ret = ov772x_write_array(priv->client, priv->fmt->regs);
+	if (ret < 0)
+		goto start_end;
+
+	/*
+	 * set size format
+	 */
+	ret = ov772x_write_array(priv->client, priv->win->regs);
+	if (ret < 0)
+		goto start_end;
+
+	/*
+	 * set COM7 bit ( QVGA or VGA )
+	 */
+	ret = ov772x_mask_set(priv->client,
+			      COM7, SLCT_MASK, priv->win->com7_bit);
+	if (ret < 0)
+		goto start_end;
+
+	/*
+	 * set UV setting
+	 */
+	if (priv->fmt->option & OP_UV) {
+		ret = ov772x_mask_set(priv->client,
+				      DSP_CTRL3, UV_MASK, UV_ON);
+		if (ret < 0)
+			goto start_end;
+	}
+
+	/*
+	 * set SWAP setting
+	 */
+	if (priv->fmt->option & OP_SWAP_RGB) {
+		ret = ov772x_mask_set(priv->client,
+				      COM3, SWAP_MASK, SWAP_RGB);
+		if (ret < 0)
+			goto start_end;
+	}
+
+	dev_info(&icd->dev,
+		 "format %s, win %s\n", priv->fmt->name, priv->win->name);
+
+start_end:
+	priv->fmt = NULL;
+	priv->win = NULL;
+
+	return ret;
+}
+
+static int ov772x_stop_capture(struct soc_camera_device *icd)
+{
+	struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+	ov772x_reset(priv->client);
+	return 0;
+}
+
+static int ov772x_set_bus_param(struct soc_camera_device *icd,
+				unsigned long		  flags)
+{
+	return 0;
+}
+
+static unsigned long ov772x_query_bus_param(struct soc_camera_device *icd)
+{
+	struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+
+	return  SOCAM_PCLK_SAMPLE_RISING |
+		SOCAM_HSYNC_ACTIVE_HIGH  |
+		SOCAM_VSYNC_ACTIVE_HIGH  |
+		SOCAM_MASTER             |
+		priv->info->buswidth;
+}
+
+static int ov772x_get_chip_id(struct soc_camera_device *icd,
+			      struct v4l2_chip_ident   *id)
+{
+	id->ident    = V4L2_IDENT_OV772X;
+	id->revision = 0;
+
+	return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int ov772x_get_register(struct soc_camera_device *icd,
+			       struct v4l2_register *reg)
+{
+	struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+	int                 ret;
+
+	if (reg->reg > 0xff)
+		return -EINVAL;
+
+	ret = i2c_smbus_read_byte_data(priv->client, reg->reg);
+	if (ret < 0)
+		return ret;
+
+	reg->val = (__u64)ret;
+
+	return 0;
+}
+
+static int ov772x_set_register(struct soc_camera_device *icd,
+			       struct v4l2_register *reg)
+{
+	struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+
+	if (reg->reg > 0xff ||
+	    reg->val > 0xff)
+		return -EINVAL;
+
+	return i2c_smbus_write_byte_data(priv->client, reg->reg, reg->val);
+}
+#endif
+
+static int ov772x_set_fmt_cap(struct soc_camera_device *icd,
+			      __u32                     pixfmt,
+			      struct v4l2_rect         *rect)
+{
+	struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+	int ret = -EINVAL;
+	int i;
+
+	/*
+	 * select format
+	 */
+	priv->fmt = NULL;
+	for (i = 0; i < ARRAY_SIZE(ov772x_cfmts); i++) {
+		if (pixfmt == ov772x_cfmts[i].fourcc) {
+			priv->fmt = ov772x_cfmts + i;
+			ret = 0;
+			break;
+		}
+	}
+
+	return ret;
+}
+
+static int ov772x_try_fmt_cap(struct soc_camera_device *icd,
+			      struct v4l2_format       *f)
+{
+	struct v4l2_pix_format *pix  = &f->fmt.pix;
+	struct ov772x_priv     *priv;
+
+	priv = container_of(icd, struct ov772x_priv, icd);
+
+	/* QVGA */
+	if (pix->width  <= ov772x_win_qvga.width ||
+	    pix->height <= ov772x_win_qvga.height) {
+		priv->win   = &ov772x_win_qvga;
+		pix->width  =  ov772x_win_qvga.width;
+		pix->height =  ov772x_win_qvga.height;
+	}
+
+	/* VGA */
+	else if (pix->width  <= ov772x_win_vga.width ||
+		 pix->height <= ov772x_win_vga.height) {
+		priv->win   = &ov772x_win_vga;
+		pix->width  =  ov772x_win_vga.width;
+		pix->height =  ov772x_win_vga.height;
+	}
+
+	pix->field = V4L2_FIELD_NONE;
+
+	return 0;
+}
+
+static int ov772x_video_probe(struct soc_camera_device *icd)
+{
+	struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+	u8                  pid, ver;
+
+	/*
+	 * We must have a parent by now. And it cannot be a wrong one.
+	 * So this entire test is completely redundant.
+	 */
+	if (!icd->dev.parent ||
+	    to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
+		return -ENODEV;
+
+	/*
+	 * ov772x only use 8 or 10 bit bus width
+	 */
+	if (SOCAM_DATAWIDTH_10 != priv->info->buswidth &&
+	    SOCAM_DATAWIDTH_8  != priv->info->buswidth) {
+		dev_err(&icd->dev, "bus width error\n");
+		return -ENODEV;
+	}
+
+	icd->formats     = ov772x_fmt_lists;
+	icd->num_formats = ARRAY_SIZE(ov772x_fmt_lists);
+
+	if (priv->info->link.power)
+		priv->info->link.power(&priv->client->dev, 1);
+
+	/*
+	 * check and show product ID and manufacturer ID
+	 */
+	pid = i2c_smbus_read_byte_data(priv->client, PID);
+	ver = i2c_smbus_read_byte_data(priv->client, VER);
+	if (pid != 0x77 ||
+	    ver != 0x21) {
+		if (priv->info->link.power)
+			priv->info->link.power(&priv->client->dev, 0);
+		return -ENODEV;
+	}
+
+	dev_info(&icd->dev,
+		 "ov772x Product ID %0x:%0x Manufacturer ID %x:%x\n",
+		 pid,
+		 ver,
+		 i2c_smbus_read_byte_data(priv->client, MIDH),
+		 i2c_smbus_read_byte_data(priv->client, MIDL));
+
+
+	return soc_camera_video_start(icd);
+}
+
+static void ov772x_video_remove(struct soc_camera_device *icd)
+{
+	struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+
+	soc_camera_video_stop(icd);
+
+	if (priv->info->link.power)
+		priv->info->link.power(&priv->client->dev, 0);
+
+}
+
+static struct soc_camera_ops ov772x_ops = {
+	.owner			= THIS_MODULE,
+	.probe			= ov772x_video_probe,
+	.remove			= ov772x_video_remove,
+	.init			= ov772x_init,
+	.release		= ov772x_release,
+	.start_capture		= ov772x_start_capture,
+	.stop_capture		= ov772x_stop_capture,
+	.set_fmt_cap		= ov772x_set_fmt_cap,
+	.try_fmt_cap		= ov772x_try_fmt_cap,
+	.set_bus_param		= ov772x_set_bus_param,
+	.query_bus_param	= ov772x_query_bus_param,
+	.get_chip_id		= ov772x_get_chip_id,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+	.get_register		= ov772x_get_register,
+	.set_register		= ov772x_set_register,
+#endif
+};
+
+/*
+ * i2c_driver function
+ */
+
+static int ov772x_probe(struct i2c_client          *client,
+			const struct i2c_device_id *did)
+
+{
+	struct ov772x_priv        *priv;
+	struct ov772x_camera_info *info;
+	struct soc_camera_device  *icd;
+	struct i2c_adapter        *adapter = to_i2c_adapter(client->dev.parent);
+	int                        ret;
+
+	info = client->dev.platform_data;
+	if (!info)
+		return -EINVAL;
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
+		dev_err(&adapter->dev,
+			"I2C-Adapter doesn't support "
+			"I2C_FUNC_SMBUS_BYTE_DATA\n");
+		return -EIO;
+	}
+
+	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->info   = info;
+	priv->client = client;
+	i2c_set_clientdata(client, priv);
+
+	icd             = &priv->icd;
+	icd->ops        = &ov772x_ops;
+	icd->control    = &client->dev;
+	icd->width_max  = MAX_WIDTH;
+	icd->height_max = MAX_HEIGHT;
+	icd->iface      = priv->info->link.bus_id;
+
+	ret = soc_camera_device_register(icd);
+
+	if (ret)
+		kfree(priv);
+
+	return ret;
+}
+
+static int ov772x_remove(struct i2c_client *client)
+{
+	struct ov772x_priv *priv = i2c_get_clientdata(client);
+
+	soc_camera_device_unregister(&priv->icd);
+	kfree(priv);
+	return 0;
+}
+
+static const struct i2c_device_id ov772x_id[] = {
+	{"ov772x", 0},
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, ov772x_id);
+
+
+static struct i2c_driver ov772x_i2c_driver = {
+	.driver = {
+		.name = "ov772x",
+	},
+	.probe    = ov772x_probe,
+	.remove   = ov772x_remove,
+	.id_table = ov772x_id,
+};
+
+/*
+ * module function
+ */
+
+static int __init ov772x_module_init(void)
+{
+	printk(KERN_INFO "ov772x driver\n");
+	return i2c_add_driver(&ov772x_i2c_driver);
+}
+
+static void __exit ov772x_module_exit(void)
+{
+	i2c_del_driver(&ov772x_i2c_driver);
+}
+
+module_init(ov772x_module_init);
+module_exit(ov772x_module_exit);
+
+MODULE_DESCRIPTION("SoC Camera driver for ov772x");
+MODULE_AUTHOR("Kuninori Morimoto");
+MODULE_LICENSE("GPL v2");