--- /dev/null
+/*
+ * 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");
projects / kernel / kernel-generic.git / commitdiff