new file mode 100644
@@ -0,0 +1,1124 @@
+/*
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/v4l2-mediabus.h>
+#include <linux/videodev2.h>
+
+#include <media/i2c/ov772x.h>
+#include <media/soc_camera.h>
+#include <media/v4l2-clk.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-subdev.h>
+#include <media/v4l2-image-sizes.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 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 */
+#define SENSOR_RAW 0x10 /* Sensor RAW */
+ /* 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 */
+
+/* HREF */
+#define HREF_VSTART_SHIFT 6 /* VSTART LSB */
+#define HREF_HSTART_SHIFT 4 /* HSTART 2 LSBs */
+#define HREF_VSIZE_SHIFT 2 /* VSIZE LSB */
+#define HREF_HSIZE_SHIFT 0 /* HSIZE 2 LSBs */
+
+/* EXHCH */
+#define EXHCH_VSIZE_SHIFT 2 /* VOUTSIZE LSB */
+#define EXHCH_HSIZE_SHIFT 0 /* HOUTSIZE 2 LSBs */
+
+/* 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 */
+
+/* DSP_CTRL4 */
+#define DSP_OFMT_YUV 0x00
+#define DSP_OFMT_RGB 0x00
+#define DSP_OFMT_RAW8 0x02
+#define DSP_OFMT_RAW10 0x03
+
+/* 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 */
+
+#define OV772X_MAX_WIDTH VGA_WIDTH
+#define OV772X_MAX_HEIGHT VGA_HEIGHT
+
+/*
+ * ID
+ */
+#define OV7720 0x7720
+#define OV7725 0x7721
+#define VERSION(pid, ver) ((pid<<8)|(ver&0xFF))
+
+/*
+ * struct
+ */
+
+struct ov772x_color_format {
+ u32 code;
+ enum v4l2_colorspace colorspace;
+ u8 dsp3;
+ u8 dsp4;
+ u8 com3;
+ u8 com7;
+};
+
+struct ov772x_win_size {
+ char *name;
+ unsigned char com7_bit;
+ struct v4l2_rect rect;
+};
+
+struct ov772x_priv {
+ struct v4l2_subdev subdev;
+ struct v4l2_ctrl_handler hdl;
+ struct v4l2_clk *clk;
+ struct ov772x_camera_info *info;
+ const struct ov772x_color_format *cfmt;
+ const struct ov772x_win_size *win;
+ unsigned short flag_vflip:1;
+ unsigned short flag_hflip:1;
+ /* band_filter = COM8[5] ? 256 - BDBASE : 0 */
+ unsigned short band_filter;
+};
+
+/*
+ * supported color format list
+ */
+static const struct ov772x_color_format ov772x_cfmts[] = {
+ {
+ .code = MEDIA_BUS_FMT_YUYV8_2X8,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .dsp3 = 0x0,
+ .dsp4 = DSP_OFMT_YUV,
+ .com3 = SWAP_YUV,
+ .com7 = OFMT_YUV,
+ },
+ {
+ .code = MEDIA_BUS_FMT_YVYU8_2X8,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .dsp3 = UV_ON,
+ .dsp4 = DSP_OFMT_YUV,
+ .com3 = SWAP_YUV,
+ .com7 = OFMT_YUV,
+ },
+ {
+ .code = MEDIA_BUS_FMT_UYVY8_2X8,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .dsp3 = 0x0,
+ .dsp4 = DSP_OFMT_YUV,
+ .com3 = 0x0,
+ .com7 = OFMT_YUV,
+ },
+ {
+ .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .dsp3 = 0x0,
+ .dsp4 = DSP_OFMT_YUV,
+ .com3 = SWAP_RGB,
+ .com7 = FMT_RGB555 | OFMT_RGB,
+ },
+ {
+ .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .dsp3 = 0x0,
+ .dsp4 = DSP_OFMT_YUV,
+ .com3 = 0x0,
+ .com7 = FMT_RGB555 | OFMT_RGB,
+ },
+ {
+ .code = MEDIA_BUS_FMT_RGB565_2X8_LE,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .dsp3 = 0x0,
+ .dsp4 = DSP_OFMT_YUV,
+ .com3 = SWAP_RGB,
+ .com7 = FMT_RGB565 | OFMT_RGB,
+ },
+ {
+ .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .dsp3 = 0x0,
+ .dsp4 = DSP_OFMT_YUV,
+ .com3 = 0x0,
+ .com7 = FMT_RGB565 | OFMT_RGB,
+ },
+ {
+ /* Setting DSP4 to DSP_OFMT_RAW8 still gives 10-bit output,
+ * regardless of the COM7 value. We can thus only support 10-bit
+ * Bayer until someone figures it out.
+ */
+ .code = MEDIA_BUS_FMT_SBGGR10_1X10,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .dsp3 = 0x0,
+ .dsp4 = DSP_OFMT_RAW10,
+ .com3 = 0x0,
+ .com7 = SENSOR_RAW | OFMT_BRAW,
+ },
+};
+
+
+/*
+ * window size list
+ */
+
+static const struct ov772x_win_size ov772x_win_sizes[] = {
+ {
+ .name = "VGA",
+ .com7_bit = SLCT_VGA,
+ .rect = {
+ .left = 140,
+ .top = 14,
+ .width = VGA_WIDTH,
+ .height = VGA_HEIGHT,
+ },
+ }, {
+ .name = "QVGA",
+ .com7_bit = SLCT_QVGA,
+ .rect = {
+ .left = 252,
+ .top = 6,
+ .width = QVGA_WIDTH,
+ .height = QVGA_HEIGHT,
+ },
+ },
+};
+
+/*
+ * general function
+ */
+
+static struct ov772x_priv *to_ov772x(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct ov772x_priv, subdev);
+}
+
+static inline int ov772x_read(struct i2c_client *client, u8 addr)
+{
+ return i2c_smbus_read_byte_data(client, addr);
+}
+
+static inline int ov772x_write(struct i2c_client *client, u8 addr, u8 value)
+{
+ return i2c_smbus_write_byte_data(client, addr, value);
+}
+
+static int ov772x_mask_set(struct i2c_client *client, u8 command, u8 mask,
+ u8 set)
+{
+ s32 val = ov772x_read(client, command);
+ if (val < 0)
+ return val;
+
+ val &= ~mask;
+ val |= set & mask;
+
+ return ov772x_write(client, command, val);
+}
+
+static int ov772x_reset(struct i2c_client *client)
+{
+ int ret;
+
+ ret = ov772x_write(client, COM7, SCCB_RESET);
+ if (ret < 0)
+ return ret;
+
+ msleep(1);
+
+ return ov772x_mask_set(client, COM2, SOFT_SLEEP_MODE, SOFT_SLEEP_MODE);
+}
+
+/*
+ * soc_camera_ops function
+ */
+
+static int ov772x_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov772x_priv *priv = to_ov772x(sd);
+
+ if (!enable) {
+ ov772x_mask_set(client, COM2, SOFT_SLEEP_MODE, SOFT_SLEEP_MODE);
+ return 0;
+ }
+
+ 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_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct ov772x_priv *priv = container_of(ctrl->handler,
+ struct ov772x_priv, hdl);
+ struct v4l2_subdev *sd = &priv->subdev;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret = 0;
+ u8 val;
+
+ switch (ctrl->id) {
+ case V4L2_CID_VFLIP:
+ val = ctrl->val ? VFLIP_IMG : 0x00;
+ priv->flag_vflip = ctrl->val;
+ if (priv->info->flags & OV772X_FLAG_VFLIP)
+ val ^= VFLIP_IMG;
+ return ov772x_mask_set(client, COM3, VFLIP_IMG, val);
+ case V4L2_CID_HFLIP:
+ val = ctrl->val ? HFLIP_IMG : 0x00;
+ priv->flag_hflip = ctrl->val;
+ if (priv->info->flags & OV772X_FLAG_HFLIP)
+ val ^= HFLIP_IMG;
+ return ov772x_mask_set(client, COM3, HFLIP_IMG, val);
+ case V4L2_CID_BAND_STOP_FILTER:
+ if (!ctrl->val) {
+ /* 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->val;
+ 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->val;
+ return ret;
+ }
+
+ return -EINVAL;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int ov772x_g_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret;
+
+ reg->size = 1;
+ if (reg->reg > 0xff)
+ return -EINVAL;
+
+ ret = ov772x_read(client, reg->reg);
+ if (ret < 0)
+ return ret;
+
+ reg->val = (__u64)ret;
+
+ return 0;
+}
+
+static int ov772x_s_register(struct v4l2_subdev *sd,
+ const struct v4l2_dbg_register *reg)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ if (reg->reg > 0xff ||
+ reg->val > 0xff)
+ return -EINVAL;
+
+ return ov772x_write(client, reg->reg, reg->val);
+}
+#endif
+
+static int ov772x_s_power(struct v4l2_subdev *sd, int on)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+ struct ov772x_priv *priv = to_ov772x(sd);
+
+ return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
+}
+
+static const struct ov772x_win_size *ov772x_select_win(u32 width, u32 height)
+{
+ const struct ov772x_win_size *win = &ov772x_win_sizes[0];
+ u32 best_diff = UINT_MAX;
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(ov772x_win_sizes); ++i) {
+ u32 diff = abs(width - ov772x_win_sizes[i].rect.width)
+ + abs(height - ov772x_win_sizes[i].rect.height);
+ if (diff < best_diff) {
+ best_diff = diff;
+ win = &ov772x_win_sizes[i];
+ }
+ }
+
+ return win;
+}
+
+static void ov772x_select_params(const struct v4l2_mbus_framefmt *mf,
+ const struct ov772x_color_format **cfmt,
+ const struct ov772x_win_size **win)
+{
+ unsigned int i;
+
+ /* Select a format. */
+ *cfmt = &ov772x_cfmts[0];
+
+ for (i = 0; i < ARRAY_SIZE(ov772x_cfmts); i++) {
+ if (mf->code == ov772x_cfmts[i].code) {
+ *cfmt = &ov772x_cfmts[i];
+ break;
+ }
+ }
+
+ /* Select a window size. */
+ *win = ov772x_select_win(mf->width, mf->height);
+}
+
+static int ov772x_set_params(struct ov772x_priv *priv,
+ const struct ov772x_color_format *cfmt,
+ const struct ov772x_win_size *win)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&priv->subdev);
+ int ret;
+ u8 val;
+
+ /*
+ * 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, OV772X_EDGE_THRESHOLD_MASK,
+ priv->info->edgectrl.threshold);
+ if (ret < 0)
+ goto ov772x_set_fmt_error;
+
+ ret = ov772x_mask_set(client,
+ EDGE_STRNGT, OV772X_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, OV772X_EDGE_UPPER_MASK,
+ priv->info->edgectrl.upper);
+ if (ret < 0)
+ goto ov772x_set_fmt_error;
+
+ ret = ov772x_mask_set(client,
+ EDGE_LOWER, OV772X_EDGE_LOWER_MASK,
+ priv->info->edgectrl.lower);
+ if (ret < 0)
+ goto ov772x_set_fmt_error;
+ }
+
+ /* Format and window size */
+ ret = ov772x_write(client, HSTART, win->rect.left >> 2);
+ if (ret < 0)
+ goto ov772x_set_fmt_error;
+ ret = ov772x_write(client, HSIZE, win->rect.width >> 2);
+ if (ret < 0)
+ goto ov772x_set_fmt_error;
+ ret = ov772x_write(client, VSTART, win->rect.top >> 1);
+ if (ret < 0)
+ goto ov772x_set_fmt_error;
+ ret = ov772x_write(client, VSIZE, win->rect.height >> 1);
+ if (ret < 0)
+ goto ov772x_set_fmt_error;
+ ret = ov772x_write(client, HOUTSIZE, win->rect.width >> 2);
+ if (ret < 0)
+ goto ov772x_set_fmt_error;
+ ret = ov772x_write(client, VOUTSIZE, win->rect.height >> 1);
+ if (ret < 0)
+ goto ov772x_set_fmt_error;
+ ret = ov772x_write(client, HREF,
+ ((win->rect.top & 1) << HREF_VSTART_SHIFT) |
+ ((win->rect.left & 3) << HREF_HSTART_SHIFT) |
+ ((win->rect.height & 1) << HREF_VSIZE_SHIFT) |
+ ((win->rect.width & 3) << HREF_HSIZE_SHIFT));
+ if (ret < 0)
+ goto ov772x_set_fmt_error;
+ ret = ov772x_write(client, EXHCH,
+ ((win->rect.height & 1) << EXHCH_VSIZE_SHIFT) |
+ ((win->rect.width & 3) << EXHCH_HSIZE_SHIFT));
+ if (ret < 0)
+ goto ov772x_set_fmt_error;
+
+ /*
+ * set DSP_CTRL3
+ */
+ val = cfmt->dsp3;
+ if (val) {
+ ret = ov772x_mask_set(client,
+ DSP_CTRL3, UV_MASK, val);
+ if (ret < 0)
+ goto ov772x_set_fmt_error;
+ }
+
+ /* DSP_CTRL4: AEC reference point and DSP output format. */
+ if (cfmt->dsp4) {
+ ret = ov772x_write(client, DSP_CTRL4, cfmt->dsp4);
+ if (ret < 0)
+ goto ov772x_set_fmt_error;
+ }
+
+ /*
+ * set COM3
+ */
+ val = 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;
+
+ /* COM7: Sensor resolution and output format control. */
+ ret = ov772x_write(client, COM7, win->com7_bit | cfmt->com7);
+ 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;
+ }
+
+ return ret;
+
+ov772x_set_fmt_error:
+
+ ov772x_reset(client);
+
+ return ret;
+}
+
+static int ov772x_get_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_selection *sel)
+{
+ if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
+ sel->r.left = 0;
+ sel->r.top = 0;
+ switch (sel->target) {
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ sel->r.width = OV772X_MAX_WIDTH;
+ sel->r.height = OV772X_MAX_HEIGHT;
+ return 0;
+ case V4L2_SEL_TGT_CROP:
+ sel->r.width = VGA_WIDTH;
+ sel->r.height = VGA_HEIGHT;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int ov772x_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct v4l2_mbus_framefmt *mf = &format->format;
+ struct ov772x_priv *priv = to_ov772x(sd);
+
+ if (format->pad)
+ return -EINVAL;
+
+ mf->width = priv->win->rect.width;
+ mf->height = priv->win->rect.height;
+ mf->code = priv->cfmt->code;
+ mf->colorspace = priv->cfmt->colorspace;
+ mf->field = V4L2_FIELD_NONE;
+
+ return 0;
+}
+
+static int ov772x_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct ov772x_priv *priv = to_ov772x(sd);
+ struct v4l2_mbus_framefmt *mf = &format->format;
+ const struct ov772x_color_format *cfmt;
+ const struct ov772x_win_size *win;
+ int ret;
+
+ if (format->pad)
+ return -EINVAL;
+
+ ov772x_select_params(mf, &cfmt, &win);
+
+ mf->code = cfmt->code;
+ mf->width = win->rect.width;
+ mf->height = win->rect.height;
+ mf->field = V4L2_FIELD_NONE;
+ mf->colorspace = cfmt->colorspace;
+
+ if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
+ cfg->try_fmt = *mf;
+ return 0;
+ }
+
+ ret = ov772x_set_params(priv, cfmt, win);
+ if (ret < 0)
+ return ret;
+
+ priv->win = win;
+ priv->cfmt = cfmt;
+ return 0;
+}
+
+static int ov772x_video_probe(struct ov772x_priv *priv)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&priv->subdev);
+ u8 pid, ver;
+ const char *devname;
+ int ret;
+
+ ret = ov772x_s_power(&priv->subdev, 1);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * check and show product ID and manufacturer ID
+ */
+ pid = ov772x_read(client, PID);
+ ver = ov772x_read(client, VER);
+
+ switch (VERSION(pid, ver)) {
+ case OV7720:
+ devname = "ov7720";
+ break;
+ case OV7725:
+ devname = "ov7725";
+ break;
+ default:
+ dev_err(&client->dev,
+ "Product ID error %x:%x\n", pid, ver);
+ ret = -ENODEV;
+ goto done;
+ }
+
+ dev_info(&client->dev,
+ "%s Product ID %0x:%0x Manufacturer ID %x:%x\n",
+ devname,
+ pid,
+ ver,
+ ov772x_read(client, MIDH),
+ ov772x_read(client, MIDL));
+ ret = v4l2_ctrl_handler_setup(&priv->hdl);
+
+done:
+ ov772x_s_power(&priv->subdev, 0);
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops ov772x_ctrl_ops = {
+ .s_ctrl = ov772x_s_ctrl,
+};
+
+static const struct v4l2_subdev_core_ops ov772x_subdev_core_ops = {
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .g_register = ov772x_g_register,
+ .s_register = ov772x_s_register,
+#endif
+ .s_power = ov772x_s_power,
+};
+
+static int ov772x_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->pad || code->index >= ARRAY_SIZE(ov772x_cfmts))
+ return -EINVAL;
+
+ code->code = ov772x_cfmts[code->index].code;
+ return 0;
+}
+
+static int ov772x_g_mbus_config(struct v4l2_subdev *sd,
+ struct v4l2_mbus_config *cfg)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+
+ cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_MASTER |
+ V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_HIGH |
+ V4L2_MBUS_DATA_ACTIVE_HIGH;
+ cfg->type = V4L2_MBUS_PARALLEL;
+ cfg->flags = soc_camera_apply_board_flags(ssdd, cfg);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_video_ops ov772x_subdev_video_ops = {
+ .s_stream = ov772x_s_stream,
+ .g_mbus_config = ov772x_g_mbus_config,
+};
+
+static const struct v4l2_subdev_pad_ops ov772x_subdev_pad_ops = {
+ .enum_mbus_code = ov772x_enum_mbus_code,
+ .get_selection = ov772x_get_selection,
+ .get_fmt = ov772x_get_fmt,
+ .set_fmt = ov772x_set_fmt,
+};
+
+static const struct v4l2_subdev_ops ov772x_subdev_ops = {
+ .core = &ov772x_subdev_core_ops,
+ .video = &ov772x_subdev_video_ops,
+ .pad = &ov772x_subdev_pad_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_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ int ret;
+
+ if (!ssdd || !ssdd->drv_priv) {
+ dev_err(&client->dev, "OV772X: missing platform data!\n");
+ return -EINVAL;
+ }
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
+ I2C_FUNC_PROTOCOL_MANGLING)) {
+ dev_err(&adapter->dev,
+ "I2C-Adapter doesn't support SMBUS_BYTE_DATA or PROTOCOL_MANGLING\n");
+ return -EIO;
+ }
+ client->flags |= I2C_CLIENT_SCCB;
+
+ priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->info = ssdd->drv_priv;
+
+ v4l2_i2c_subdev_init(&priv->subdev, client, &ov772x_subdev_ops);
+ v4l2_ctrl_handler_init(&priv->hdl, 3);
+ v4l2_ctrl_new_std(&priv->hdl, &ov772x_ctrl_ops,
+ V4L2_CID_VFLIP, 0, 1, 1, 0);
+ v4l2_ctrl_new_std(&priv->hdl, &ov772x_ctrl_ops,
+ V4L2_CID_HFLIP, 0, 1, 1, 0);
+ v4l2_ctrl_new_std(&priv->hdl, &ov772x_ctrl_ops,
+ V4L2_CID_BAND_STOP_FILTER, 0, 256, 1, 0);
+ priv->subdev.ctrl_handler = &priv->hdl;
+ if (priv->hdl.error)
+ return priv->hdl.error;
+
+ priv->clk = v4l2_clk_get(&client->dev, "mclk");
+ if (IS_ERR(priv->clk)) {
+ ret = PTR_ERR(priv->clk);
+ goto eclkget;
+ }
+
+ ret = ov772x_video_probe(priv);
+ if (ret < 0) {
+ v4l2_clk_put(priv->clk);
+eclkget:
+ v4l2_ctrl_handler_free(&priv->hdl);
+ } else {
+ priv->cfmt = &ov772x_cfmts[0];
+ priv->win = &ov772x_win_sizes[0];
+ }
+
+ return ret;
+}
+
+static int ov772x_remove(struct i2c_client *client)
+{
+ struct ov772x_priv *priv = to_ov772x(i2c_get_clientdata(client));
+
+ v4l2_clk_put(priv->clk);
+ v4l2_device_unregister_subdev(&priv->subdev);
+ v4l2_ctrl_handler_free(&priv->hdl);
+ 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_i2c_driver(ov772x_i2c_driver);
+
+MODULE_DESCRIPTION("SoC Camera driver for ov772x");
+MODULE_AUTHOR("Kuninori Morimoto");
+MODULE_LICENSE("GPL v2");