drivers/media/i2c/tvp7002.c

   1 /* Texas Instruments Triple 8-/10-BIT 165-/110-MSPS Video and Graphics
   2  * Digitizer with Horizontal PLL registers
   3  *
   4  * Copyright (C) 2009 Texas Instruments Inc
   5  * Author: Santiago Nunez-Corrales <santiago.nunez@ridgerun.com>
   6  *
   7  * This code is partially based upon the TVP5150 driver
   8  * written by Mauro Carvalho Chehab <mchehab@kernel.org>,
   9  * the TVP514x driver written by Vaibhav Hiremath <hvaibhav@ti.com>
  10  * and the TVP7002 driver in the TI LSP 2.10.00.14. Revisions by
  11  * Muralidharan Karicheri and Snehaprabha Narnakaje (TI).
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  */
  23 #include <linux/delay.h>
  24 #include <linux/i2c.h>
  25 #include <linux/slab.h>
  26 #include <linux/videodev2.h>
  27 #include <linux/module.h>
  28 #include <linux/of.h>
  29 #include <linux/of_graph.h>
  30 #include <linux/v4l2-dv-timings.h>
  31 #include <media/i2c/tvp7002.h>
  32 #include <media/v4l2-async.h>
  33 #include <media/v4l2-device.h>
  34 #include <media/v4l2-common.h>
  35 #include <media/v4l2-ctrls.h>
  36 #include <media/v4l2-fwnode.h>
  37
  38 #include "tvp7002_reg.h"
  39
  40 MODULE_DESCRIPTION("TI TVP7002 Video and Graphics Digitizer driver");
  41 MODULE_AUTHOR("Santiago Nunez-Corrales <santiago.nunez@ridgerun.com>");
  42 MODULE_LICENSE("GPL");
  43
  44 /* I2C retry attempts */
  45 #define I2C_RETRY_COUNT         (5)
  46
  47 /* End of registers */
  48 #define TVP7002_EOR             0x5c
  49
  50 /* Read write definition for registers */
  51 #define TVP7002_READ            0
  52 #define TVP7002_WRITE           1
  53 #define TVP7002_RESERVED        2
  54
  55 /* Interlaced vs progressive mask and shift */
  56 #define TVP7002_IP_SHIFT        5
  57 #define TVP7002_INPR_MASK       (0x01 << TVP7002_IP_SHIFT)
  58
  59 /* Shift for CPL and LPF registers */
  60 #define TVP7002_CL_SHIFT        8
  61 #define TVP7002_CL_MASK         0x0f
  62
  63 /* Debug functions */
  64 static bool debug;
  65 module_param(debug, bool, 0644);
  66 MODULE_PARM_DESC(debug, "Debug level (0-2)");
  67
  68 /* Structure for register values */
  69 struct i2c_reg_value {
  70         u8 reg;
  71         u8 value;
  72         u8 type;
  73 };
  74
  75 /*
  76  * Register default values (according to tvp7002 datasheet)
  77  * In the case of read-only registers, the value (0xff) is
  78  * never written. R/W functionality is controlled by the
  79  * writable bit in the register struct definition.
  80  */
  81 static const struct i2c_reg_value tvp7002_init_default[] = {
  82         { TVP7002_CHIP_REV, 0xff, TVP7002_READ },
  83         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
  84         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
  85         { TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
  86         { TVP7002_HPLL_PHASE_SEL, 0x80, TVP7002_WRITE },
  87         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
  88         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
  89         { TVP7002_HSYNC_OUT_W, 0x60, TVP7002_WRITE },
  90         { TVP7002_B_FINE_GAIN, 0x00, TVP7002_WRITE },
  91         { TVP7002_G_FINE_GAIN, 0x00, TVP7002_WRITE },
  92         { TVP7002_R_FINE_GAIN, 0x00, TVP7002_WRITE },
  93         { TVP7002_B_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  94         { TVP7002_G_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  95         { TVP7002_R_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  96         { TVP7002_SYNC_CTL_1, 0x20, TVP7002_WRITE },
  97         { TVP7002_HPLL_AND_CLAMP_CTL, 0x2e, TVP7002_WRITE },
  98         { TVP7002_SYNC_ON_G_THRS, 0x5d, TVP7002_WRITE },
  99         { TVP7002_SYNC_SEPARATOR_THRS, 0x47, TVP7002_WRITE },
 100         { TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
 101         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 102         { TVP7002_SYNC_DETECT_STAT, 0xff, TVP7002_READ },
 103         { TVP7002_OUT_FORMATTER, 0x47, TVP7002_WRITE },
 104         { TVP7002_MISC_CTL_1, 0x01, TVP7002_WRITE },
 105         { TVP7002_MISC_CTL_2, 0x00, TVP7002_WRITE },
 106         { TVP7002_MISC_CTL_3, 0x01, TVP7002_WRITE },
 107         { TVP7002_IN_MUX_SEL_1, 0x00, TVP7002_WRITE },
 108         { TVP7002_IN_MUX_SEL_2, 0x67, TVP7002_WRITE },
 109         { TVP7002_B_AND_G_COARSE_GAIN, 0x77, TVP7002_WRITE },
 110         { TVP7002_R_COARSE_GAIN, 0x07, TVP7002_WRITE },
 111         { TVP7002_FINE_OFF_LSBS, 0x00, TVP7002_WRITE },
 112         { TVP7002_B_COARSE_OFF, 0x10, TVP7002_WRITE },
 113         { TVP7002_G_COARSE_OFF, 0x10, TVP7002_WRITE },
 114         { TVP7002_R_COARSE_OFF, 0x10, TVP7002_WRITE },
 115         { TVP7002_HSOUT_OUT_START, 0x08, TVP7002_WRITE },
 116         { TVP7002_MISC_CTL_4, 0x00, TVP7002_WRITE },
 117         { TVP7002_B_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 118         { TVP7002_G_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 119         { TVP7002_R_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 120         { TVP7002_AUTO_LVL_CTL_ENABLE, 0x80, TVP7002_WRITE },
 121         { TVP7002_DGTL_ALC_OUT_MSBS, 0xff, TVP7002_READ },
 122         { TVP7002_AUTO_LVL_CTL_FILTER, 0x53, TVP7002_WRITE },
 123         { 0x29, 0x08, TVP7002_RESERVED },
 124         { TVP7002_FINE_CLAMP_CTL, 0x07, TVP7002_WRITE },
 125         /* PWR_CTL is controlled only by the probe and reset functions */
 126         { TVP7002_PWR_CTL, 0x00, TVP7002_RESERVED },
 127         { TVP7002_ADC_SETUP, 0x50, TVP7002_WRITE },
 128         { TVP7002_COARSE_CLAMP_CTL, 0x00, TVP7002_WRITE },
 129         { TVP7002_SOG_CLAMP, 0x80, TVP7002_WRITE },
 130         { TVP7002_RGB_COARSE_CLAMP_CTL, 0x8c, TVP7002_WRITE },
 131         { TVP7002_SOG_COARSE_CLAMP_CTL, 0x04, TVP7002_WRITE },
 132         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 133         { 0x32, 0x18, TVP7002_RESERVED },
 134         { 0x33, 0x60, TVP7002_RESERVED },
 135         { TVP7002_MVIS_STRIPPER_W, 0xff, TVP7002_RESERVED },
 136         { TVP7002_VSYNC_ALGN, 0x10, TVP7002_WRITE },
 137         { TVP7002_SYNC_BYPASS, 0x00, TVP7002_WRITE },
 138         { TVP7002_L_FRAME_STAT_LSBS, 0xff, TVP7002_READ },
 139         { TVP7002_L_FRAME_STAT_MSBS, 0xff, TVP7002_READ },
 140         { TVP7002_CLK_L_STAT_LSBS, 0xff, TVP7002_READ },
 141         { TVP7002_CLK_L_STAT_MSBS, 0xff, TVP7002_READ },
 142         { TVP7002_HSYNC_W, 0xff, TVP7002_READ },
 143         { TVP7002_VSYNC_W, 0xff, TVP7002_READ },
 144         { TVP7002_L_LENGTH_TOL, 0x03, TVP7002_WRITE },
 145         { 0x3e, 0x60, TVP7002_RESERVED },
 146         { TVP7002_VIDEO_BWTH_CTL, 0x01, TVP7002_WRITE },
 147         { TVP7002_AVID_START_PIXEL_LSBS, 0x01, TVP7002_WRITE },
 148         { TVP7002_AVID_START_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
 149         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 150         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
 151         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 152         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 153         { TVP7002_VBLK_F_0_DURATION, 0x1e, TVP7002_WRITE },
 154         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 155         { TVP7002_FBIT_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
 156         { TVP7002_FBIT_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 157         { TVP7002_YUV_Y_G_COEF_LSBS, 0xe3, TVP7002_WRITE },
 158         { TVP7002_YUV_Y_G_COEF_MSBS, 0x16, TVP7002_WRITE },
 159         { TVP7002_YUV_Y_B_COEF_LSBS, 0x4f, TVP7002_WRITE },
 160         { TVP7002_YUV_Y_B_COEF_MSBS, 0x02, TVP7002_WRITE },
 161         { TVP7002_YUV_Y_R_COEF_LSBS, 0xce, TVP7002_WRITE },
 162         { TVP7002_YUV_Y_R_COEF_MSBS, 0x06, TVP7002_WRITE },
 163         { TVP7002_YUV_U_G_COEF_LSBS, 0xab, TVP7002_WRITE },
 164         { TVP7002_YUV_U_G_COEF_MSBS, 0xf3, TVP7002_WRITE },
 165         { TVP7002_YUV_U_B_COEF_LSBS, 0x00, TVP7002_WRITE },
 166         { TVP7002_YUV_U_B_COEF_MSBS, 0x10, TVP7002_WRITE },
 167         { TVP7002_YUV_U_R_COEF_LSBS, 0x55, TVP7002_WRITE },
 168         { TVP7002_YUV_U_R_COEF_MSBS, 0xfc, TVP7002_WRITE },
 169         { TVP7002_YUV_V_G_COEF_LSBS, 0x78, TVP7002_WRITE },
 170         { TVP7002_YUV_V_G_COEF_MSBS, 0xf1, TVP7002_WRITE },
 171         { TVP7002_YUV_V_B_COEF_LSBS, 0x88, TVP7002_WRITE },
 172         { TVP7002_YUV_V_B_COEF_MSBS, 0xfe, TVP7002_WRITE },
 173         { TVP7002_YUV_V_R_COEF_LSBS, 0x00, TVP7002_WRITE },
 174         { TVP7002_YUV_V_R_COEF_MSBS, 0x10, TVP7002_WRITE },
 175         /* This signals end of register values */
 176         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 177 };
 178
 179 /* Register parameters for 480P */
 180 static const struct i2c_reg_value tvp7002_parms_480P[] = {
 181         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x35, TVP7002_WRITE },
 182         { TVP7002_HPLL_FDBK_DIV_LSBS, 0xa0, TVP7002_WRITE },
 183         { TVP7002_HPLL_CRTL, 0x02, TVP7002_WRITE },
 184         { TVP7002_AVID_START_PIXEL_LSBS, 0x91, TVP7002_WRITE },
 185         { TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 186         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x0B, TVP7002_WRITE },
 187         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 188         { TVP7002_VBLK_F_0_START_L_OFF, 0x03, TVP7002_WRITE },
 189         { TVP7002_VBLK_F_1_START_L_OFF, 0x01, TVP7002_WRITE },
 190         { TVP7002_VBLK_F_0_DURATION, 0x13, TVP7002_WRITE },
 191         { TVP7002_VBLK_F_1_DURATION, 0x13, TVP7002_WRITE },
 192         { TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
 193         { TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
 194         { TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
 195         { TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
 196         { TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
 197         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 198 };
 199
 200 /* Register parameters for 576P */
 201 static const struct i2c_reg_value tvp7002_parms_576P[] = {
 202         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x36, TVP7002_WRITE },
 203         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
 204         { TVP7002_HPLL_CRTL, 0x18, TVP7002_WRITE },
 205         { TVP7002_AVID_START_PIXEL_LSBS, 0x9B, TVP7002_WRITE },
 206         { TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 207         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x0F, TVP7002_WRITE },
 208         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 209         { TVP7002_VBLK_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
 210         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 211         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 212         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 213         { TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
 214         { TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
 215         { TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
 216         { TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
 217         { TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
 218         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 219 };
 220
 221 /* Register parameters for 1080I60 */
 222 static const struct i2c_reg_value tvp7002_parms_1080I60[] = {
 223         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
 224         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
 225         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 226         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 227         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 228         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 229         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 230         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 231         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 232         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 233         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 234         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 235         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 236         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 237         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 238         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 239         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 240 };
 241
 242 /* Register parameters for 1080P60 */
 243 static const struct i2c_reg_value tvp7002_parms_1080P60[] = {
 244         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
 245         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
 246         { TVP7002_HPLL_CRTL, 0xE0, TVP7002_WRITE },
 247         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 248         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 249         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 250         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 251         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 252         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 253         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 254         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 255         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 256         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 257         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 258         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 259         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 260         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 261 };
 262
 263 /* Register parameters for 1080I50 */
 264 static const struct i2c_reg_value tvp7002_parms_1080I50[] = {
 265         { TVP7002_HPLL_FDBK_DIV_MSBS, 0xa5, TVP7002_WRITE },
 266         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
 267         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 268         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 269         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 270         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 271         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 272         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 273         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 274         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 275         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 276         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 277         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 278         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 279         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 280         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 281         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 282 };
 283
 284 /* Register parameters for 720P60 */
 285 static const struct i2c_reg_value tvp7002_parms_720P60[] = {
 286         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
 287         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
 288         { TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
 289         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
 290         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 291         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
 292         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
 293         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 294         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 295         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 296         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 297         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 298         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 299         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 300         { TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
 301         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 302         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 303 };
 304
 305 /* Register parameters for 720P50 */
 306 static const struct i2c_reg_value tvp7002_parms_720P50[] = {
 307         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x7b, TVP7002_WRITE },
 308         { TVP7002_HPLL_FDBK_DIV_LSBS, 0xc0, TVP7002_WRITE },
 309         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 310         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
 311         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 312         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
 313         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
 314         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 315         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 316         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 317         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 318         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 319         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 320         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 321         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 322         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 323         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 324 };
 325
 326 /* Timings definition for handling device operation */
 327 struct tvp7002_timings_definition {
 328         struct v4l2_dv_timings timings;
 329         const struct i2c_reg_value *p_settings;
 330         enum v4l2_colorspace color_space;
 331         enum v4l2_field scanmode;
 332         u16 progressive;
 333         u16 lines_per_frame;
 334         u16 cpl_min;
 335         u16 cpl_max;
 336 };
 337
 338 /* Struct list for digital video timings */
 339 static const struct tvp7002_timings_definition tvp7002_timings[] = {
 340         {
 341                 V4L2_DV_BT_CEA_1280X720P60,
 342                 tvp7002_parms_720P60,
 343                 V4L2_COLORSPACE_REC709,
 344                 V4L2_FIELD_NONE,
 345                 1,
 346                 0x2EE,
 347                 135,
 348                 153
 349         },
 350         {
 351                 V4L2_DV_BT_CEA_1920X1080I60,
 352                 tvp7002_parms_1080I60,
 353                 V4L2_COLORSPACE_REC709,
 354                 V4L2_FIELD_INTERLACED,
 355                 0,
 356                 0x465,
 357                 181,
 358                 205
 359         },
 360         {
 361                 V4L2_DV_BT_CEA_1920X1080I50,
 362                 tvp7002_parms_1080I50,
 363                 V4L2_COLORSPACE_REC709,
 364                 V4L2_FIELD_INTERLACED,
 365                 0,
 366                 0x465,
 367                 217,
 368                 245
 369         },
 370         {
 371                 V4L2_DV_BT_CEA_1280X720P50,
 372                 tvp7002_parms_720P50,
 373                 V4L2_COLORSPACE_REC709,
 374                 V4L2_FIELD_NONE,
 375                 1,
 376                 0x2EE,
 377                 163,
 378                 183
 379         },
 380         {
 381                 V4L2_DV_BT_CEA_1920X1080P60,
 382                 tvp7002_parms_1080P60,
 383                 V4L2_COLORSPACE_REC709,
 384                 V4L2_FIELD_NONE,
 385                 1,
 386                 0x465,
 387                 90,
 388                 102
 389         },
 390         {
 391                 V4L2_DV_BT_CEA_720X480P59_94,
 392                 tvp7002_parms_480P,
 393                 V4L2_COLORSPACE_SMPTE170M,
 394                 V4L2_FIELD_NONE,
 395                 1,
 396                 0x20D,
 397                 0xffff,
 398                 0xffff
 399         },
 400         {
 401                 V4L2_DV_BT_CEA_720X576P50,
 402                 tvp7002_parms_576P,
 403                 V4L2_COLORSPACE_SMPTE170M,
 404                 V4L2_FIELD_NONE,
 405                 1,
 406                 0x271,
 407                 0xffff,
 408                 0xffff
 409         }
 410 };
 411
 412 #define NUM_TIMINGS ARRAY_SIZE(tvp7002_timings)
 413
 414 /* Device definition */
 415 struct tvp7002 {
 416         struct v4l2_subdev sd;
 417         struct v4l2_ctrl_handler hdl;
 418         const struct tvp7002_config *pdata;
 419
 420         int ver;
 421         int streaming;
 422
 423         const struct tvp7002_timings_definition *current_timings;
 424         struct media_pad pad;
 425 };
 426
 427 /*
 428  * to_tvp7002 - Obtain device handler TVP7002
 429  * @sd: ptr to v4l2_subdev struct
 430  *
 431  * Returns device handler tvp7002.
 432  */
 433 static inline struct tvp7002 *to_tvp7002(struct v4l2_subdev *sd)
 434 {
 435         return container_of(sd, struct tvp7002, sd);
 436 }
 437
 438 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
 439 {
 440         return &container_of(ctrl->handler, struct tvp7002, hdl)->sd;
 441 }
 442
 443 /*
 444  * tvp7002_read - Read a value from a register in an TVP7002
 445  * @sd: ptr to v4l2_subdev struct
 446  * @addr: TVP7002 register address
 447  * @dst: pointer to 8-bit destination
 448  *
 449  * Returns value read if successful, or non-zero (-1) otherwise.
 450  */
 451 static int tvp7002_read(struct v4l2_subdev *sd, u8 addr, u8 *dst)
 452 {
 453         struct i2c_client *c = v4l2_get_subdevdata(sd);
 454         int retry;
 455         int error;
 456
 457         for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
 458                 error = i2c_smbus_read_byte_data(c, addr);
 459
 460                 if (error >= 0) {
 461                         *dst = (u8)error;
 462                         return 0;
 463                 }
 464
 465                 msleep_interruptible(10);
 466         }
 467         v4l2_err(sd, "TVP7002 read error %d\n", error);
 468         return error;
 469 }
 470
 471 /*
 472  * tvp7002_read_err() - Read a register value with error code
 473  * @sd: pointer to standard V4L2 sub-device structure
 474  * @reg: destination register
 475  * @val: value to be read
 476  * @err: pointer to error value
 477  *
 478  * Read a value in a register and save error value in pointer.
 479  * Also update the register table if successful
 480  */
 481 static inline void tvp7002_read_err(struct v4l2_subdev *sd, u8 reg,
 482                                                         u8 *dst, int *err)
 483 {
 484         if (!*err)
 485                 *err = tvp7002_read(sd, reg, dst);
 486 }
 487
 488 /*
 489  * tvp7002_write() - Write a value to a register in TVP7002
 490  * @sd: ptr to v4l2_subdev struct
 491  * @addr: TVP7002 register address
 492  * @value: value to be written to the register
 493  *
 494  * Write a value to a register in an TVP7002 decoder device.
 495  * Returns zero if successful, or non-zero otherwise.
 496  */
 497 static int tvp7002_write(struct v4l2_subdev *sd, u8 addr, u8 value)
 498 {
 499         struct i2c_client *c;
 500         int retry;
 501         int error;
 502
 503         c = v4l2_get_subdevdata(sd);
 504
 505         for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
 506                 error = i2c_smbus_write_byte_data(c, addr, value);
 507
 508                 if (error >= 0)
 509                         return 0;
 510
 511                 v4l2_warn(sd, "Write: retry ... %d\n", retry);
 512                 msleep_interruptible(10);
 513         }
 514         v4l2_err(sd, "TVP7002 write error %d\n", error);
 515         return error;
 516 }
 517
 518 /*
 519  * tvp7002_write_err() - Write a register value with error code
 520  * @sd: pointer to standard V4L2 sub-device structure
 521  * @reg: destination register
 522  * @val: value to be written
 523  * @err: pointer to error value
 524  *
 525  * Write a value in a register and save error value in pointer.
 526  * Also update the register table if successful
 527  */
 528 static inline void tvp7002_write_err(struct v4l2_subdev *sd, u8 reg,
 529                                                         u8 val, int *err)
 530 {
 531         if (!*err)
 532                 *err = tvp7002_write(sd, reg, val);
 533 }
 534
 535 /*
 536  * tvp7002_write_inittab() - Write initialization values
 537  * @sd: ptr to v4l2_subdev struct
 538  * @regs: ptr to i2c_reg_value struct
 539  *
 540  * Write initialization values.
 541  * Returns zero or -EINVAL if read operation fails.
 542  */
 543 static int tvp7002_write_inittab(struct v4l2_subdev *sd,
 544                                         const struct i2c_reg_value *regs)
 545 {
 546         int error = 0;
 547
 548         /* Initialize the first (defined) registers */
 549         while (TVP7002_EOR != regs->reg) {
 550                 if (TVP7002_WRITE == regs->type)
 551                         tvp7002_write_err(sd, regs->reg, regs->value, &error);
 552                 regs++;
 553         }
 554
 555         return error;
 556 }
 557
 558 static int tvp7002_s_dv_timings(struct v4l2_subdev *sd,
 559                                         struct v4l2_dv_timings *dv_timings)
 560 {
 561         struct tvp7002 *device = to_tvp7002(sd);
 562         const struct v4l2_bt_timings *bt = &dv_timings->bt;
 563         int i;
 564
 565         if (dv_timings->type != V4L2_DV_BT_656_1120)
 566                 return -EINVAL;
 567         for (i = 0; i < NUM_TIMINGS; i++) {
 568                 const struct v4l2_bt_timings *t = &tvp7002_timings[i].timings.bt;
 569
 570                 if (!memcmp(bt, t, &bt->standards - &bt->width)) {
 571                         device->current_timings = &tvp7002_timings[i];
 572                         return tvp7002_write_inittab(sd, tvp7002_timings[i].p_settings);
 573                 }
 574         }
 575         return -EINVAL;
 576 }
 577
 578 static int tvp7002_g_dv_timings(struct v4l2_subdev *sd,
 579                                         struct v4l2_dv_timings *dv_timings)
 580 {
 581         struct tvp7002 *device = to_tvp7002(sd);
 582
 583         *dv_timings = device->current_timings->timings;
 584         return 0;
 585 }
 586
 587 /*
 588  * tvp7002_s_ctrl() - Set a control
 589  * @ctrl: ptr to v4l2_ctrl struct
 590  *
 591  * Set a control in TVP7002 decoder device.
 592  * Returns zero when successful or -EINVAL if register access fails.
 593  */
 594 static int tvp7002_s_ctrl(struct v4l2_ctrl *ctrl)
 595 {
 596         struct v4l2_subdev *sd = to_sd(ctrl);
 597         int error = 0;
 598
 599         switch (ctrl->id) {
 600         case V4L2_CID_GAIN:
 601                 tvp7002_write_err(sd, TVP7002_R_FINE_GAIN, ctrl->val, &error);
 602                 tvp7002_write_err(sd, TVP7002_G_FINE_GAIN, ctrl->val, &error);
 603                 tvp7002_write_err(sd, TVP7002_B_FINE_GAIN, ctrl->val, &error);
 604                 return error;
 605         }
 606         return -EINVAL;
 607 }
 608
 609 /*
 610  * tvp7002_query_dv() - query DV timings
 611  * @sd: pointer to standard V4L2 sub-device structure
 612  * @index: index into the tvp7002_timings array
 613  *
 614  * Returns the current DV timings detected by TVP7002. If no active input is
 615  * detected, returns -EINVAL
 616  */
 617 static int tvp7002_query_dv(struct v4l2_subdev *sd, int *index)
 618 {
 619         const struct tvp7002_timings_definition *timings = tvp7002_timings;
 620         u8 progressive;
 621         u32 lpfr;
 622         u32 cpln;
 623         int error = 0;
 624         u8 lpf_lsb;
 625         u8 lpf_msb;
 626         u8 cpl_lsb;
 627         u8 cpl_msb;
 628
 629         /* Return invalid index if no active input is detected */
 630         *index = NUM_TIMINGS;
 631
 632         /* Read standards from device registers */
 633         tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_LSBS, &lpf_lsb, &error);
 634         tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_MSBS, &lpf_msb, &error);
 635
 636         if (error < 0)
 637                 return error;
 638
 639         tvp7002_read_err(sd, TVP7002_CLK_L_STAT_LSBS, &cpl_lsb, &error);
 640         tvp7002_read_err(sd, TVP7002_CLK_L_STAT_MSBS, &cpl_msb, &error);
 641
 642         if (error < 0)
 643                 return error;
 644
 645         /* Get lines per frame, clocks per line and interlaced/progresive */
 646         lpfr = lpf_lsb | ((TVP7002_CL_MASK & lpf_msb) << TVP7002_CL_SHIFT);
 647         cpln = cpl_lsb | ((TVP7002_CL_MASK & cpl_msb) << TVP7002_CL_SHIFT);
 648         progressive = (lpf_msb & TVP7002_INPR_MASK) >> TVP7002_IP_SHIFT;
 649
 650         /* Do checking of video modes */
 651         for (*index = 0; *index < NUM_TIMINGS; (*index)++, timings++)
 652                 if (lpfr == timings->lines_per_frame &&
 653                         progressive == timings->progressive) {
 654                         if (timings->cpl_min == 0xffff)
 655                                 break;
 656                         if (cpln >= timings->cpl_min && cpln <= timings->cpl_max)
 657                                 break;
 658                 }
 659
 660         if (*index == NUM_TIMINGS) {
 661                 v4l2_dbg(1, debug, sd, "detection failed: lpf = %x, cpl = %x\n",
 662                                                                 lpfr, cpln);
 663                 return -ENOLINK;
 664         }
 665
 666         /* Update lines per frame and clocks per line info */
 667         v4l2_dbg(1, debug, sd, "detected timings: %d\n", *index);
 668         return 0;
 669 }
 670
 671 static int tvp7002_query_dv_timings(struct v4l2_subdev *sd,
 672                                         struct v4l2_dv_timings *timings)
 673 {
 674         int index;
 675         int err = tvp7002_query_dv(sd, &index);
 676
 677         if (err)
 678                 return err;
 679         *timings = tvp7002_timings[index].timings;
 680         return 0;
 681 }
 682
 683 #ifdef CONFIG_VIDEO_ADV_DEBUG
 684 /*
 685  * tvp7002_g_register() - Get the value of a register
 686  * @sd: ptr to v4l2_subdev struct
 687  * @reg: ptr to v4l2_dbg_register struct
 688  *
 689  * Get the value of a TVP7002 decoder device register.
 690  * Returns zero when successful, -EINVAL if register read fails or
 691  * access to I2C client fails.
 692  */
 693 static int tvp7002_g_register(struct v4l2_subdev *sd,
 694                                                 struct v4l2_dbg_register *reg)
 695 {
 696         u8 val;
 697         int ret;
 698
 699         ret = tvp7002_read(sd, reg->reg & 0xff, &val);
 700         reg->val = val;
 701         reg->size = 1;
 702         return ret;
 703 }
 704
 705 /*
 706  * tvp7002_s_register() - set a control
 707  * @sd: ptr to v4l2_subdev struct
 708  * @reg: ptr to v4l2_dbg_register struct
 709  *
 710  * Get the value of a TVP7002 decoder device register.
 711  * Returns zero when successful, -EINVAL if register read fails.
 712  */
 713 static int tvp7002_s_register(struct v4l2_subdev *sd,
 714                                                 const struct v4l2_dbg_register *reg)
 715 {
 716         return tvp7002_write(sd, reg->reg & 0xff, reg->val & 0xff);
 717 }
 718 #endif
 719
 720 /*
 721  * tvp7002_s_stream() - V4L2 decoder i/f handler for s_stream
 722  * @sd: pointer to standard V4L2 sub-device structure
 723  * @enable: streaming enable or disable
 724  *
 725  * Sets streaming to enable or disable, if possible.
 726  */
 727 static int tvp7002_s_stream(struct v4l2_subdev *sd, int enable)
 728 {
 729         struct tvp7002 *device = to_tvp7002(sd);
 730         int error;
 731
 732         if (device->streaming == enable)
 733                 return 0;
 734
 735         /* low impedance: on, high impedance: off */
 736         error = tvp7002_write(sd, TVP7002_MISC_CTL_2, enable ? 0x00 : 0x03);
 737         if (error) {
 738                 v4l2_dbg(1, debug, sd, "Fail to set streaming\n");
 739                 return error;
 740         }
 741
 742         device->streaming = enable;
 743         return 0;
 744 }
 745
 746 /*
 747  * tvp7002_log_status() - Print information about register settings
 748  * @sd: ptr to v4l2_subdev struct
 749  *
 750  * Log register values of a TVP7002 decoder device.
 751  * Returns zero or -EINVAL if read operation fails.
 752  */
 753 static int tvp7002_log_status(struct v4l2_subdev *sd)
 754 {
 755         struct tvp7002 *device = to_tvp7002(sd);
 756         const struct v4l2_bt_timings *bt;
 757         int detected;
 758
 759         /* Find my current timings */
 760         tvp7002_query_dv(sd, &detected);
 761
 762         bt = &device->current_timings->timings.bt;
 763         v4l2_info(sd, "Selected DV Timings: %ux%u\n", bt->width, bt->height);
 764         if (detected == NUM_TIMINGS) {
 765                 v4l2_info(sd, "Detected DV Timings: None\n");
 766         } else {
 767                 bt = &tvp7002_timings[detected].timings.bt;
 768                 v4l2_info(sd, "Detected DV Timings: %ux%u\n",
 769                                 bt->width, bt->height);
 770         }
 771         v4l2_info(sd, "Streaming enabled: %s\n",
 772                                         device->streaming ? "yes" : "no");
 773
 774         /* Print the current value of the gain control */
 775         v4l2_ctrl_handler_log_status(&device->hdl, sd->name);
 776
 777         return 0;
 778 }
 779
 780 static int tvp7002_enum_dv_timings(struct v4l2_subdev *sd,
 781                 struct v4l2_enum_dv_timings *timings)
 782 {
 783         if (timings->pad != 0)
 784                 return -EINVAL;
 785
 786         /* Check requested format index is within range */
 787         if (timings->index >= NUM_TIMINGS)
 788                 return -EINVAL;
 789
 790         timings->timings = tvp7002_timings[timings->index].timings;
 791         return 0;
 792 }
 793
 794 static const struct v4l2_ctrl_ops tvp7002_ctrl_ops = {
 795         .s_ctrl = tvp7002_s_ctrl,
 796 };
 797
 798 /*
 799  * tvp7002_enum_mbus_code() - Enum supported digital video format on pad
 800  * @sd: pointer to standard V4L2 sub-device structure
 801  * @cfg: pad configuration
 802  * @code: pointer to subdev enum mbus code struct
 803  *
 804  * Enumerate supported digital video formats for pad.
 805  */
 806 static int
 807 tvp7002_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
 808                        struct v4l2_subdev_mbus_code_enum *code)
 809 {
 810         /* Check requested format index is within range */
 811         if (code->index != 0)
 812                 return -EINVAL;
 813
 814         code->code = MEDIA_BUS_FMT_YUYV10_1X20;
 815
 816         return 0;
 817 }
 818
 819 /*
 820  * tvp7002_get_pad_format() - get video format on pad
 821  * @sd: pointer to standard V4L2 sub-device structure
 822  * @cfg: pad configuration
 823  * @fmt: pointer to subdev format struct
 824  *
 825  * get video format for pad.
 826  */
 827 static int
 828 tvp7002_get_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
 829                        struct v4l2_subdev_format *fmt)
 830 {
 831         struct tvp7002 *tvp7002 = to_tvp7002(sd);
 832
 833         fmt->format.code = MEDIA_BUS_FMT_YUYV10_1X20;
 834         fmt->format.width = tvp7002->current_timings->timings.bt.width;
 835         fmt->format.height = tvp7002->current_timings->timings.bt.height;
 836         fmt->format.field = tvp7002->current_timings->scanmode;
 837         fmt->format.colorspace = tvp7002->current_timings->color_space;
 838
 839         return 0;
 840 }
 841
 842 /*
 843  * tvp7002_set_pad_format() - set video format on pad
 844  * @sd: pointer to standard V4L2 sub-device structure
 845  * @cfg: pad configuration
 846  * @fmt: pointer to subdev format struct
 847  *
 848  * set video format for pad.
 849  */
 850 static int
 851 tvp7002_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
 852                        struct v4l2_subdev_format *fmt)
 853 {
 854         return tvp7002_get_pad_format(sd, cfg, fmt);
 855 }
 856
 857 /* V4L2 core operation handlers */
 858 static const struct v4l2_subdev_core_ops tvp7002_core_ops = {
 859         .log_status = tvp7002_log_status,
 860 #ifdef CONFIG_VIDEO_ADV_DEBUG
 861         .g_register = tvp7002_g_register,
 862         .s_register = tvp7002_s_register,
 863 #endif
 864 };
 865
 866 /* Specific video subsystem operation handlers */
 867 static const struct v4l2_subdev_video_ops tvp7002_video_ops = {
 868         .g_dv_timings = tvp7002_g_dv_timings,
 869         .s_dv_timings = tvp7002_s_dv_timings,
 870         .query_dv_timings = tvp7002_query_dv_timings,
 871         .s_stream = tvp7002_s_stream,
 872 };
 873
 874 /* media pad related operation handlers */
 875 static const struct v4l2_subdev_pad_ops tvp7002_pad_ops = {
 876         .enum_mbus_code = tvp7002_enum_mbus_code,
 877         .get_fmt = tvp7002_get_pad_format,
 878         .set_fmt = tvp7002_set_pad_format,
 879         .enum_dv_timings = tvp7002_enum_dv_timings,
 880 };
 881
 882 /* V4L2 top level operation handlers */
 883 static const struct v4l2_subdev_ops tvp7002_ops = {
 884         .core = &tvp7002_core_ops,
 885         .video = &tvp7002_video_ops,
 886         .pad = &tvp7002_pad_ops,
 887 };
 888
 889 static struct tvp7002_config *
 890 tvp7002_get_pdata(struct i2c_client *client)
 891 {
 892         struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
 893         struct tvp7002_config *pdata = NULL;
 894         struct device_node *endpoint;
 895         unsigned int flags;
 896
 897         if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
 898                 return client->dev.platform_data;
 899
 900         endpoint = of_graph_get_next_endpoint(client->dev.of_node, NULL);
 901         if (!endpoint)
 902                 return NULL;
 903
 904         if (v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint), &bus_cfg))
 905                 goto done;
 906
 907         pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
 908         if (!pdata)
 909                 goto done;
 910
 911         flags = bus_cfg.bus.parallel.flags;
 912
 913         if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
 914                 pdata->hs_polarity = 1;
 915
 916         if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
 917                 pdata->vs_polarity = 1;
 918
 919         if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
 920                 pdata->clk_polarity = 1;
 921
 922         if (flags & V4L2_MBUS_FIELD_EVEN_HIGH)
 923                 pdata->fid_polarity = 1;
 924
 925         if (flags & V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH)
 926                 pdata->sog_polarity = 1;
 927
 928 done:
 929         of_node_put(endpoint);
 930         return pdata;
 931 }
 932
 933 /*
 934  * tvp7002_probe - Probe a TVP7002 device
 935  * @c: ptr to i2c_client struct
 936  * @id: ptr to i2c_device_id struct
 937  *
 938  * Initialize the TVP7002 device
 939  * Returns zero when successful, -EINVAL if register read fails or
 940  * -EIO if i2c access is not available.
 941  */
 942 static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
 943 {
 944         struct tvp7002_config *pdata = tvp7002_get_pdata(c);
 945         struct v4l2_subdev *sd;
 946         struct tvp7002 *device;
 947         struct v4l2_dv_timings timings;
 948         int polarity_a;
 949         int polarity_b;
 950         u8 revision;
 951         int error;
 952
 953         if (pdata == NULL) {
 954                 dev_err(&c->dev, "No platform data\n");
 955                 return -EINVAL;
 956         }
 957
 958         /* Check if the adapter supports the needed features */
 959         if (!i2c_check_functionality(c->adapter,
 960                 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
 961                 return -EIO;
 962
 963         device = devm_kzalloc(&c->dev, sizeof(struct tvp7002), GFP_KERNEL);
 964
 965         if (!device)
 966                 return -ENOMEM;
 967
 968         sd = &device->sd;
 969         device->pdata = pdata;
 970         device->current_timings = tvp7002_timings;
 971
 972         /* Tell v4l2 the device is ready */
 973         v4l2_i2c_subdev_init(sd, c, &tvp7002_ops);
 974         v4l_info(c, "tvp7002 found @ 0x%02x (%s)\n",
 975                                         c->addr, c->adapter->name);
 976
 977         error = tvp7002_read(sd, TVP7002_CHIP_REV, &revision);
 978         if (error < 0)
 979                 return error;
 980
 981         /* Get revision number */
 982         v4l2_info(sd, "Rev. %02x detected.\n", revision);
 983         if (revision != 0x02)
 984                 v4l2_info(sd, "Unknown revision detected.\n");
 985
 986         /* Initializes TVP7002 to its default values */
 987         error = tvp7002_write_inittab(sd, tvp7002_init_default);
 988
 989         if (error < 0)
 990                 return error;
 991
 992         /* Set polarity information after registers have been set */
 993         polarity_a = 0x20 | device->pdata->hs_polarity << 5
 994                         | device->pdata->vs_polarity << 2;
 995         error = tvp7002_write(sd, TVP7002_SYNC_CTL_1, polarity_a);
 996         if (error < 0)
 997                 return error;
 998
 999         polarity_b = 0x01  | device->pdata->fid_polarity << 2
1000                         | device->pdata->sog_polarity << 1
1001                         | device->pdata->clk_polarity;
1002         error = tvp7002_write(sd, TVP7002_MISC_CTL_3, polarity_b);
1003         if (error < 0)
1004                 return error;
1005
1006         /* Set registers according to default video mode */
1007         timings = device->current_timings->timings;
1008         error = tvp7002_s_dv_timings(sd, &timings);
1009
1010 #if defined(CONFIG_MEDIA_CONTROLLER)
1011         device->pad.flags = MEDIA_PAD_FL_SOURCE;
1012         device->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1013         device->sd.entity.function = MEDIA_ENT_F_ATV_DECODER;
1014
1015         error = media_entity_pads_init(&device->sd.entity, 1, &device->pad);
1016         if (error < 0)
1017                 return error;
1018 #endif
1019
1020         v4l2_ctrl_handler_init(&device->hdl, 1);
1021         v4l2_ctrl_new_std(&device->hdl, &tvp7002_ctrl_ops,
1022                         V4L2_CID_GAIN, 0, 255, 1, 0);
1023         sd->ctrl_handler = &device->hdl;
1024         if (device->hdl.error) {
1025                 error = device->hdl.error;
1026                 goto error;
1027         }
1028         v4l2_ctrl_handler_setup(&device->hdl);
1029
1030         error = v4l2_async_register_subdev(&device->sd);
1031         if (error)
1032                 goto error;
1033
1034         return 0;
1035
1036 error:
1037         v4l2_ctrl_handler_free(&device->hdl);
1038 #if defined(CONFIG_MEDIA_CONTROLLER)
1039         media_entity_cleanup(&device->sd.entity);
1040 #endif
1041         return error;
1042 }
1043
1044 /*
1045  * tvp7002_remove - Remove TVP7002 device support
1046  * @c: ptr to i2c_client struct
1047  *
1048  * Reset the TVP7002 device
1049  * Returns zero.
1050  */
1051 static int tvp7002_remove(struct i2c_client *c)
1052 {
1053         struct v4l2_subdev *sd = i2c_get_clientdata(c);
1054         struct tvp7002 *device = to_tvp7002(sd);
1055
1056         v4l2_dbg(1, debug, sd, "Removing tvp7002 adapter"
1057                                 "on address 0x%x\n", c->addr);
1058         v4l2_async_unregister_subdev(&device->sd);
1059 #if defined(CONFIG_MEDIA_CONTROLLER)
1060         media_entity_cleanup(&device->sd.entity);
1061 #endif
1062         v4l2_ctrl_handler_free(&device->hdl);
1063         return 0;
1064 }
1065
1066 /* I2C Device ID table */
1067 static const struct i2c_device_id tvp7002_id[] = {
1068         { "tvp7002", 0 },
1069         { }
1070 };
1071 MODULE_DEVICE_TABLE(i2c, tvp7002_id);
1072
1073 #if IS_ENABLED(CONFIG_OF)
1074 static const struct of_device_id tvp7002_of_match[] = {
1075         { .compatible = "ti,tvp7002", },
1076         { /* sentinel */ },
1077 };
1078 MODULE_DEVICE_TABLE(of, tvp7002_of_match);
1079 #endif
1080
1081 /* I2C driver data */
1082 static struct i2c_driver tvp7002_driver = {
1083         .driver = {
1084                 .of_match_table = of_match_ptr(tvp7002_of_match),
1085                 .name = TVP7002_MODULE_NAME,
1086         },
1087         .probe = tvp7002_probe,
1088         .remove = tvp7002_remove,
1089         .id_table = tvp7002_id,
1090 };
1091
1092 module_i2c_driver(tvp7002_driver);