/* * ov772x Camera Driver * * Copyright (C) 2008 Renesas Solutions Corp. * Kuninori Morimoto * * Based on ov7670 and soc_camera_platform driver, * * Copyright 2006-7 Jonathan Corbet * Copyright (C) 2008 Magnus Damm * Copyright (C) 2008, Guennadi Liakhovetski * * 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 #include #include #include #include #include #include #include #include #include #include /* * 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 REG16 0x16 /* Register 16 */ #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 REG28 0x28 /* Register 28 */ #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 */ /* for ov7720 */ #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 */ /* for ov7725 */ #define LC_CTR 0x46 /* Lens correction control */ #define LC_XC 0x47 /* X coordinate of lens correction center relative */ #define LC_YC 0x48 /* Y coordinate of lens correction center relative */ #define LC_COEF 0x49 /* Lens correction coefficient */ #define LC_RADI 0x4A /* Lens correction radius */ #define LC_COEFB 0x4B /* Lens B channel compensation coefficient */ #define LC_COEFR 0x4C /* Lens R channel compensation coefficient */ #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 AWBB_BLK 0x62 /* AWB option for advanced AWB */ #define AWB_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 AWB_BIAS 0x68 /* AWB BLC level clip */ #define AWB_CTRL1 0x69 /* AWB control 1 */ #define AWB_CTRL2 0x6A /* AWB control 2 */ #define AWB_CTRL3 0x6B /* AWB control 3 */ #define AWB_CTRL4 0x6C /* AWB control 4 */ #define AWB_CTRL5 0x6D /* AWB control 5 */ #define AWB_CTRL6 0x6E /* AWB control 6 */ #define AWB_CTRL7 0x6F /* AWB control 7 */ #define AWB_CTRL8 0x70 /* AWB control 8 */ #define AWB_CTRL9 0x71 /* AWB control 9 */ #define AWB_CTRL10 0x72 /* AWB control 10 */ #define AWB_CTRL11 0x73 /* AWB control 11 */ #define AWB_CTRL12 0x74 /* AWB control 12 */ #define AWB_CTRL13 0x75 /* AWB control 13 */ #define AWB_CTRL14 0x76 /* AWB control 14 */ #define AWB_CTRL15 0x77 /* AWB control 15 */ #define AWB_CTRL16 0x78 /* AWB control 16 */ #define AWB_CTRL17 0x79 /* AWB control 17 */ #define AWB_CTRL18 0x7A /* AWB control 18 */ #define AWB_CTRL19 0x7B /* AWB control 19 */ #define AWB_CTRL20 0x7C /* AWB control 20 */ #define AWB_CTRL21 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 EDGE_STRNGT 0x8F /* Edge strength control when manual mode */ #define EDGE_TRSHLD 0x90 /* Edge threshold control when manual mode */ #define DNSOFF 0x91 /* Auto De-noise threshold control */ #define EDGE_UPPER 0x92 /* Edge strength upper limit when Auto mode */ #define EDGE_LOWER 0x93 /* Edge strength lower limit when Auto mode */ #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 */ /* for ov7720 */ #define HUE0 0xA9 /* Hue control 0 */ #define HUE1 0xAA /* Hue control 1 */ /* for ov7725 */ #define HUECOS 0xA9 /* Cosine value */ #define HUESIN 0xAA /* Sine value */ #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 (SWAP_RGB | SWAP_YUV | SWAP_ML) #define IMG_MASK (VFLIP_IMG | HFLIP_IMG) #define VFLIP_IMG 0x80 /* Vertical flip image ON/OFF selection */ #define HFLIP_IMG 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 selection */ /* 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_MASK 0x0c /* Mask of color format */ #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_MASK 0x03 /* Mask of output format */ #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 /* DSPAUTO (DSP Auto Function ON/OFF Control) */ #define AWB_ACTRL 0x80 /* AWB auto threshold control */ #define DENOISE_ACTRL 0x40 /* De-noise auto threshold control */ #define EDGE_ACTRL 0x20 /* Edge enhancement auto strength control */ #define UV_ACTRL 0x10 /* UV adjust auto slope control */ #define SCAL0_ACTRL 0x08 /* Auto scaling factor control */ #define SCAL1_2_ACTRL 0x04 /* Auto scaling factor control */ /* * ID */ #define OV7720 0x7720 #define OV7725 0x7721 #define VERSION(pid, ver) ((pid<<8)|(ver&0xFF)) /* * struct */ struct regval_list { unsigned char reg_num; unsigned char value; }; struct ov772x_color_format { enum v4l2_mbus_pixelcode code; enum v4l2_colorspace colorspace; u8 dsp3; u8 com3; u8 com7; }; struct ov772x_win_size { char *name; __u32 width; __u32 height; unsigned char com7_bit; const struct regval_list *regs; }; struct ov772x_priv { struct v4l2_subdev subdev; struct ov772x_camera_info *info; const struct ov772x_color_format *cfmt; const struct ov772x_win_size *win; int model; unsigned short flag_vflip:1; unsigned short flag_hflip:1; /* band_filter = COM8[5] ? 256 - BDBASE : 0 */ unsigned short band_filter; }; #define ENDMARKER { 0xff, 0xff } /* * 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 color format list */ static const struct ov772x_color_format ov772x_cfmts[] = { { .code = V4L2_MBUS_FMT_YUYV8_2X8_LE, .colorspace = V4L2_COLORSPACE_JPEG, .dsp3 = 0x0, .com3 = SWAP_YUV, .com7 = OFMT_YUV, }, { .code = V4L2_MBUS_FMT_YVYU8_2X8_LE, .colorspace = V4L2_COLORSPACE_JPEG, .dsp3 = UV_ON, .com3 = SWAP_YUV, .com7 = OFMT_YUV, }, { .code = V4L2_MBUS_FMT_YUYV8_2X8_BE, .colorspace = V4L2_COLORSPACE_JPEG, .dsp3 = 0x0, .com3 = 0x0, .com7 = OFMT_YUV, }, { .code = V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, .colorspace = V4L2_COLORSPACE_SRGB, .dsp3 = 0x0, .com3 = SWAP_RGB, .com7 = FMT_RGB555 | OFMT_RGB, }, { .code = V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE, .colorspace = V4L2_COLORSPACE_SRGB, .dsp3 = 0x0, .com3 = 0x0, .com7 = FMT_RGB555 | OFMT_RGB, }, { .code = V4L2_MBUS_FMT_RGB565_2X8_LE, .colorspace = V4L2_COLORSPACE_SRGB, .dsp3 = 0x0, .com3 = SWAP_RGB, .com7 = FMT_RGB565 | OFMT_RGB, }, { .code = V4L2_MBUS_FMT_RGB565_2X8_BE, .colorspace = V4L2_COLORSPACE_SRGB, .dsp3 = 0x0, .com3 = 0x0, .com7 = FMT_RGB565 | OFMT_RGB, }, }; /* * 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, }; static const struct v4l2_queryctrl ov772x_controls[] = { { .id = V4L2_CID_VFLIP, .type = V4L2_CTRL_TYPE_BOOLEAN, .name = "Flip Vertically", .minimum = 0, .maximum = 1, .step = 1, .default_value = 0, }, { .id = V4L2_CID_HFLIP, .type = V4L2_CTRL_TYPE_BOOLEAN, .name = "Flip Horizontally", .minimum = 0, .maximum = 1, .step = 1, .default_value = 0, }, { .id = V4L2_CID_BAND_STOP_FILTER, .type = V4L2_CTRL_TYPE_INTEGER, .name = "Band-stop filter", .minimum = 0, .maximum = 256, .step = 1, .default_value = 0, }, }; /* * general function */ static struct ov772x_priv *to_ov772x(const struct i2c_client *client) { return container_of(i2c_get_clientdata(client), struct ov772x_priv, subdev); } 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); if (val < 0) return val; val &= ~mask; val |= set & mask; 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_s_stream(struct v4l2_subdev *sd, int enable) { struct i2c_client *client = sd->priv; struct ov772x_priv *priv = to_ov772x(client); if (!enable) { ov772x_mask_set(client, COM2, SOFT_SLEEP_MODE, SOFT_SLEEP_MODE); return 0; } if (!priv->win || !priv->cfmt) { dev_err(&client->dev, "norm or win select error\n"); return -EPERM; } ov772x_mask_set(client, COM2, SOFT_SLEEP_MODE, 0); dev_dbg(&client->dev, "format %d, win %s\n", priv->cfmt->code, priv->win->name); 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 i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); struct ov772x_priv *priv = i2c_get_clientdata(client); struct soc_camera_link *icl = to_soc_camera_link(icd); unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER | SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_DATA_ACTIVE_HIGH; if (priv->info->flags & OV772X_FLAG_8BIT) flags |= SOCAM_DATAWIDTH_8; else flags |= SOCAM_DATAWIDTH_10; return soc_camera_apply_sensor_flags(icl, flags); } static int ov772x_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) { struct i2c_client *client = sd->priv; struct ov772x_priv *priv = to_ov772x(client); switch (ctrl->id) { case V4L2_CID_VFLIP: ctrl->value = priv->flag_vflip; break; case V4L2_CID_HFLIP: ctrl->value = priv->flag_hflip; break; case V4L2_CID_BAND_STOP_FILTER: ctrl->value = priv->band_filter; break; } return 0; } static int ov772x_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) { struct i2c_client *client = sd->priv; struct ov772x_priv *priv = to_ov772x(client); int ret = 0; u8 val; switch (ctrl->id) { case V4L2_CID_VFLIP: val = ctrl->value ? VFLIP_IMG : 0x00; priv->flag_vflip = ctrl->value; if (priv->info->flags & OV772X_FLAG_VFLIP) val ^= VFLIP_IMG; ret = ov772x_mask_set(client, COM3, VFLIP_IMG, val); break; case V4L2_CID_HFLIP: val = ctrl->value ? HFLIP_IMG : 0x00; priv->flag_hflip = ctrl->value; if (priv->info->flags & OV772X_FLAG_HFLIP) val ^= HFLIP_IMG; ret = ov772x_mask_set(client, COM3, HFLIP_IMG, val); break; case V4L2_CID_BAND_STOP_FILTER: if ((unsigned)ctrl->value > 256) ctrl->value = 256; if (ctrl->value == priv->band_filter) break; if (!ctrl->value) { /* Switch the filter off, it is on now */ ret = ov772x_mask_set(client, BDBASE, 0xff, 0xff); if (!ret) ret = ov772x_mask_set(client, COM8, BNDF_ON_OFF, 0); } else { /* Switch the filter on, set AEC low limit */ val = 256 - ctrl->value; ret = ov772x_mask_set(client, COM8, BNDF_ON_OFF, BNDF_ON_OFF); if (!ret) ret = ov772x_mask_set(client, BDBASE, 0xff, val); } if (!ret) priv->band_filter = ctrl->value; break; } return ret; } static int ov772x_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *id) { struct i2c_client *client = sd->priv; struct ov772x_priv *priv = to_ov772x(client); id->ident = priv->model; id->revision = 0; return 0; } #ifdef CONFIG_VIDEO_ADV_DEBUG static int ov772x_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) { struct i2c_client *client = sd->priv; int ret; reg->size = 1; if (reg->reg > 0xff) return -EINVAL; ret = i2c_smbus_read_byte_data(client, reg->reg); if (ret < 0) return ret; reg->val = (__u64)ret; return 0; } static int ov772x_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) { struct i2c_client *client = sd->priv; if (reg->reg > 0xff || reg->val > 0xff) return -EINVAL; return i2c_smbus_write_byte_data(client, reg->reg, reg->val); } #endif static const struct ov772x_win_size *ov772x_select_win(u32 width, u32 height) { __u32 diff; const struct ov772x_win_size *win; /* default is QVGA */ diff = abs(width - ov772x_win_qvga.width) + abs(height - ov772x_win_qvga.height); win = &ov772x_win_qvga; /* VGA */ if (diff > abs(width - ov772x_win_vga.width) + abs(height - ov772x_win_vga.height)) win = &ov772x_win_vga; return win; } static int ov772x_set_params(struct i2c_client *client, u32 *width, u32 *height, enum v4l2_mbus_pixelcode code) { struct ov772x_priv *priv = to_ov772x(client); int ret = -EINVAL; u8 val; int i; /* * select format */ priv->cfmt = NULL; for (i = 0; i < ARRAY_SIZE(ov772x_cfmts); i++) { if (code == ov772x_cfmts[i].code) { priv->cfmt = ov772x_cfmts + i; break; } } if (!priv->cfmt) goto ov772x_set_fmt_error; /* * select win */ priv->win = ov772x_select_win(*width, *height); /* * reset hardware */ ov772x_reset(client); /* * Edge Ctrl */ if (priv->info->edgectrl.strength & OV772X_MANUAL_EDGE_CTRL) { /* * Manual Edge Control Mode * * Edge auto strength bit is set by default. * Remove it when manual mode. */ ret = ov772x_mask_set(client, DSPAUTO, EDGE_ACTRL, 0x00); if (ret < 0) goto ov772x_set_fmt_error; ret = ov772x_mask_set(client, EDGE_TRSHLD, EDGE_THRESHOLD_MASK, priv->info->edgectrl.threshold); if (ret < 0) goto ov772x_set_fmt_error; ret = ov772x_mask_set(client, EDGE_STRNGT, EDGE_STRENGTH_MASK, priv->info->edgectrl.strength); if (ret < 0) goto ov772x_set_fmt_error; } else if (priv->info->edgectrl.upper > priv->info->edgectrl.lower) { /* * Auto Edge Control Mode * * set upper and lower limit */ ret = ov772x_mask_set(client, EDGE_UPPER, EDGE_UPPER_MASK, priv->info->edgectrl.upper); if (ret < 0) goto ov772x_set_fmt_error; ret = ov772x_mask_set(client, EDGE_LOWER, EDGE_LOWER_MASK, priv->info->edgectrl.lower); if (ret < 0) goto ov772x_set_fmt_error; } /* * set size format */ ret = ov772x_write_array(client, priv->win->regs); if (ret < 0) goto ov772x_set_fmt_error; /* * set DSP_CTRL3 */ val = priv->cfmt->dsp3; if (val) { ret = ov772x_mask_set(client, DSP_CTRL3, UV_MASK, val); if (ret < 0) goto ov772x_set_fmt_error; } /* * set COM3 */ val = priv->cfmt->com3; if (priv->info->flags & OV772X_FLAG_VFLIP) val |= VFLIP_IMG; if (priv->info->flags & OV772X_FLAG_HFLIP) val |= HFLIP_IMG; if (priv->flag_vflip) val ^= VFLIP_IMG; if (priv->flag_hflip) val ^= HFLIP_IMG; ret = ov772x_mask_set(client, COM3, SWAP_MASK | IMG_MASK, val); if (ret < 0) goto ov772x_set_fmt_error; /* * set COM7 */ val = priv->win->com7_bit | priv->cfmt->com7; ret = ov772x_mask_set(client, COM7, SLCT_MASK | FMT_MASK | OFMT_MASK, val); if (ret < 0) goto ov772x_set_fmt_error; /* * set COM8 */ if (priv->band_filter) { ret = ov772x_mask_set(client, COM8, BNDF_ON_OFF, 1); if (!ret) ret = ov772x_mask_set(client, BDBASE, 0xff, 256 - priv->band_filter); if (ret < 0) goto ov772x_set_fmt_error; } *width = priv->win->width; *height = priv->win->height; return ret; ov772x_set_fmt_error: ov772x_reset(client); priv->win = NULL; priv->cfmt = NULL; return ret; } static int ov772x_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) { a->c.left = 0; a->c.top = 0; a->c.width = VGA_WIDTH; a->c.height = VGA_HEIGHT; a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; return 0; } static int ov772x_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) { a->bounds.left = 0; a->bounds.top = 0; a->bounds.width = VGA_WIDTH; a->bounds.height = VGA_HEIGHT; a->defrect = a->bounds; a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; a->pixelaspect.numerator = 1; a->pixelaspect.denominator = 1; return 0; } static int ov772x_g_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf) { struct i2c_client *client = sd->priv; struct ov772x_priv *priv = to_ov772x(client); if (!priv->win || !priv->cfmt) { u32 width = VGA_WIDTH, height = VGA_HEIGHT; int ret = ov772x_set_params(client, &width, &height, V4L2_MBUS_FMT_YUYV8_2X8_LE); if (ret < 0) return ret; } mf->width = priv->win->width; mf->height = priv->win->height; mf->code = priv->cfmt->code; mf->colorspace = priv->cfmt->colorspace; mf->field = V4L2_FIELD_NONE; return 0; } static int ov772x_s_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf) { struct i2c_client *client = sd->priv; struct ov772x_priv *priv = to_ov772x(client); int ret = ov772x_set_params(client, &mf->width, &mf->height, mf->code); if (!ret) mf->colorspace = priv->cfmt->colorspace; return ret; } static int ov772x_try_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf) { struct i2c_client *client = sd->priv; struct ov772x_priv *priv = to_ov772x(client); const struct ov772x_win_size *win; int i; /* * select suitable win */ win = ov772x_select_win(mf->width, mf->height); mf->width = win->width; mf->height = win->height; mf->field = V4L2_FIELD_NONE; for (i = 0; i < ARRAY_SIZE(ov772x_cfmts); i++) if (mf->code == ov772x_cfmts[i].code) break; if (i == ARRAY_SIZE(ov772x_cfmts)) { /* Unsupported format requested. Propose either */ if (priv->cfmt) { /* the current one or */ mf->colorspace = priv->cfmt->colorspace; mf->code = priv->cfmt->code; } else { /* the default one */ mf->colorspace = ov772x_cfmts[0].colorspace; mf->code = ov772x_cfmts[0].code; } } else { /* Also return the colorspace */ mf->colorspace = ov772x_cfmts[i].colorspace; } return 0; } static int ov772x_video_probe(struct soc_camera_device *icd, struct i2c_client *client) { struct ov772x_priv *priv = to_ov772x(client); u8 pid, ver; const char *devname; /* * 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; /* * check and show product ID and manufacturer ID */ pid = i2c_smbus_read_byte_data(client, PID); ver = i2c_smbus_read_byte_data(client, VER); switch (VERSION(pid, ver)) { case OV7720: devname = "ov7720"; priv->model = V4L2_IDENT_OV7720; break; case OV7725: devname = "ov7725"; priv->model = V4L2_IDENT_OV7725; break; default: dev_err(&client->dev, "Product ID error %x:%x\n", pid, ver); return -ENODEV; } dev_info(&client->dev, "%s Product ID %0x:%0x Manufacturer ID %x:%x\n", devname, pid, ver, i2c_smbus_read_byte_data(client, MIDH), i2c_smbus_read_byte_data(client, MIDL)); return 0; } static struct soc_camera_ops ov772x_ops = { .set_bus_param = ov772x_set_bus_param, .query_bus_param = ov772x_query_bus_param, .controls = ov772x_controls, .num_controls = ARRAY_SIZE(ov772x_controls), }; static struct v4l2_subdev_core_ops ov772x_subdev_core_ops = { .g_ctrl = ov772x_g_ctrl, .s_ctrl = ov772x_s_ctrl, .g_chip_ident = ov772x_g_chip_ident, #ifdef CONFIG_VIDEO_ADV_DEBUG .g_register = ov772x_g_register, .s_register = ov772x_s_register, #endif }; static int ov772x_enum_fmt(struct v4l2_subdev *sd, unsigned int index, enum v4l2_mbus_pixelcode *code) { if (index >= ARRAY_SIZE(ov772x_cfmts)) return -EINVAL; *code = ov772x_cfmts[index].code; return 0; } static struct v4l2_subdev_video_ops ov772x_subdev_video_ops = { .s_stream = ov772x_s_stream, .g_mbus_fmt = ov772x_g_fmt, .s_mbus_fmt = ov772x_s_fmt, .try_mbus_fmt = ov772x_try_fmt, .cropcap = ov772x_cropcap, .g_crop = ov772x_g_crop, .enum_mbus_fmt = ov772x_enum_fmt, }; static struct v4l2_subdev_ops ov772x_subdev_ops = { .core = &ov772x_subdev_core_ops, .video = &ov772x_subdev_video_ops, }; /* * i2c_driver function */ static int ov772x_probe(struct i2c_client *client, const struct i2c_device_id *did) { struct ov772x_priv *priv; struct soc_camera_device *icd = client->dev.platform_data; struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); struct soc_camera_link *icl; int ret; if (!icd) { dev_err(&client->dev, "OV772X: missing soc-camera data!\n"); return -EINVAL; } icl = to_soc_camera_link(icd); if (!icl || !icl->priv) 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 = icl->priv; v4l2_i2c_subdev_init(&priv->subdev, client, &ov772x_subdev_ops); icd->ops = &ov772x_ops; ret = ov772x_video_probe(icd, client); if (ret) { icd->ops = NULL; i2c_set_clientdata(client, NULL); kfree(priv); } return ret; } static int ov772x_remove(struct i2c_client *client) { struct ov772x_priv *priv = to_ov772x(client); struct soc_camera_device *icd = client->dev.platform_data; icd->ops = NULL; i2c_set_clientdata(client, NULL); 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) { 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");