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@infradead.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  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  26  */
  27 #include <linux/delay.h>
  28 #include <linux/i2c.h>
  29 #include <linux/slab.h>
  30 #include <linux/videodev2.h>
  31 #include <linux/module.h>
  32 #include <linux/v4l2-dv-timings.h>
  33 #include <media/tvp7002.h>
  34 #include <media/v4l2-device.h>
  35 #include <media/v4l2-common.h>
  36 #include <media/v4l2-ctrls.h>
  37 #include "tvp7002_reg.h"
  38
  39 MODULE_DESCRIPTION("TI TVP7002 Video and Graphics Digitizer driver");
  40 MODULE_AUTHOR("Santiago Nunez-Corrales <santiago.nunez@ridgerun.com>");
  41 MODULE_LICENSE("GPL");
  42
  43 /* I2C retry attempts */
  44 #define I2C_RETRY_COUNT         (5)
  45
  46 /* End of registers */
  47 #define TVP7002_EOR             0x5c
  48
  49 /* Read write definition for registers */
  50 #define TVP7002_READ            0
  51 #define TVP7002_WRITE           1
  52 #define TVP7002_RESERVED        2
  53
  54 /* Interlaced vs progressive mask and shift */
  55 #define TVP7002_IP_SHIFT        5
  56 #define TVP7002_INPR_MASK       (0x01 << TVP7002_IP_SHIFT)
  57
  58 /* Shift for CPL and LPF registers */
  59 #define TVP7002_CL_SHIFT        8
  60 #define TVP7002_CL_MASK         0x0f
  61
  62 /* Debug functions */
  63 static bool debug;
  64 module_param(debug, bool, 0644);
  65 MODULE_PARM_DESC(debug, "Debug level (0-2)");
  66
  67 /* Structure for register values */
  68 struct i2c_reg_value {
  69         u8 reg;
  70         u8 value;
  71         u8 type;
  72 };
  73
  74 /*
  75  * Register default values (according to tvp7002 datasheet)
  76  * In the case of read-only registers, the value (0xff) is
  77  * never written. R/W functionality is controlled by the
  78  * writable bit in the register struct definition.
  79  */
  80 static const struct i2c_reg_value tvp7002_init_default[] = {
  81         { TVP7002_CHIP_REV, 0xff, TVP7002_READ },
  82         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
  83         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
  84         { TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
  85         { TVP7002_HPLL_PHASE_SEL, 0x80, TVP7002_WRITE },
  86         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
  87         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
  88         { TVP7002_HSYNC_OUT_W, 0x60, TVP7002_WRITE },
  89         { TVP7002_B_FINE_GAIN, 0x00, TVP7002_WRITE },
  90         { TVP7002_G_FINE_GAIN, 0x00, TVP7002_WRITE },
  91         { TVP7002_R_FINE_GAIN, 0x00, TVP7002_WRITE },
  92         { TVP7002_B_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  93         { TVP7002_G_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  94         { TVP7002_R_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  95         { TVP7002_SYNC_CTL_1, 0x20, TVP7002_WRITE },
  96         { TVP7002_HPLL_AND_CLAMP_CTL, 0x2e, TVP7002_WRITE },
  97         { TVP7002_SYNC_ON_G_THRS, 0x5d, TVP7002_WRITE },
  98         { TVP7002_SYNC_SEPARATOR_THRS, 0x47, TVP7002_WRITE },
  99         { TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
 100         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 101         { TVP7002_SYNC_DETECT_STAT, 0xff, TVP7002_READ },
 102         { TVP7002_OUT_FORMATTER, 0x47, TVP7002_WRITE },
 103         { TVP7002_MISC_CTL_1, 0x01, TVP7002_WRITE },
 104         { TVP7002_MISC_CTL_2, 0x00, TVP7002_WRITE },
 105         { TVP7002_MISC_CTL_3, 0x01, TVP7002_WRITE },
 106         { TVP7002_IN_MUX_SEL_1, 0x00, TVP7002_WRITE },
 107         { TVP7002_IN_MUX_SEL_2, 0x67, TVP7002_WRITE },
 108         { TVP7002_B_AND_G_COARSE_GAIN, 0x77, TVP7002_WRITE },
 109         { TVP7002_R_COARSE_GAIN, 0x07, TVP7002_WRITE },
 110         { TVP7002_FINE_OFF_LSBS, 0x00, TVP7002_WRITE },
 111         { TVP7002_B_COARSE_OFF, 0x10, TVP7002_WRITE },
 112         { TVP7002_G_COARSE_OFF, 0x10, TVP7002_WRITE },
 113         { TVP7002_R_COARSE_OFF, 0x10, TVP7002_WRITE },
 114         { TVP7002_HSOUT_OUT_START, 0x08, TVP7002_WRITE },
 115         { TVP7002_MISC_CTL_4, 0x00, TVP7002_WRITE },
 116         { TVP7002_B_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 117         { TVP7002_G_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 118         { TVP7002_R_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 119         { TVP7002_AUTO_LVL_CTL_ENABLE, 0x80, TVP7002_WRITE },
 120         { TVP7002_DGTL_ALC_OUT_MSBS, 0xff, TVP7002_READ },
 121         { TVP7002_AUTO_LVL_CTL_FILTER, 0x53, TVP7002_WRITE },
 122         { 0x29, 0x08, TVP7002_RESERVED },
 123         { TVP7002_FINE_CLAMP_CTL, 0x07, TVP7002_WRITE },
 124         /* PWR_CTL is controlled only by the probe and reset functions */
 125         { TVP7002_PWR_CTL, 0x00, TVP7002_RESERVED },
 126         { TVP7002_ADC_SETUP, 0x50, TVP7002_WRITE },
 127         { TVP7002_COARSE_CLAMP_CTL, 0x00, TVP7002_WRITE },
 128         { TVP7002_SOG_CLAMP, 0x80, TVP7002_WRITE },
 129         { TVP7002_RGB_COARSE_CLAMP_CTL, 0x8c, TVP7002_WRITE },
 130         { TVP7002_SOG_COARSE_CLAMP_CTL, 0x04, TVP7002_WRITE },
 131         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 132         { 0x32, 0x18, TVP7002_RESERVED },
 133         { 0x33, 0x60, TVP7002_RESERVED },
 134         { TVP7002_MVIS_STRIPPER_W, 0xff, TVP7002_RESERVED },
 135         { TVP7002_VSYNC_ALGN, 0x10, TVP7002_WRITE },
 136         { TVP7002_SYNC_BYPASS, 0x00, TVP7002_WRITE },
 137         { TVP7002_L_FRAME_STAT_LSBS, 0xff, TVP7002_READ },
 138         { TVP7002_L_FRAME_STAT_MSBS, 0xff, TVP7002_READ },
 139         { TVP7002_CLK_L_STAT_LSBS, 0xff, TVP7002_READ },
 140         { TVP7002_CLK_L_STAT_MSBS, 0xff, TVP7002_READ },
 141         { TVP7002_HSYNC_W, 0xff, TVP7002_READ },
 142         { TVP7002_VSYNC_W, 0xff, TVP7002_READ },
 143         { TVP7002_L_LENGTH_TOL, 0x03, TVP7002_WRITE },
 144         { 0x3e, 0x60, TVP7002_RESERVED },
 145         { TVP7002_VIDEO_BWTH_CTL, 0x01, TVP7002_WRITE },
 146         { TVP7002_AVID_START_PIXEL_LSBS, 0x01, TVP7002_WRITE },
 147         { TVP7002_AVID_START_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
 148         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 149         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
 150         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 151         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 152         { TVP7002_VBLK_F_0_DURATION, 0x1e, TVP7002_WRITE },
 153         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 154         { TVP7002_FBIT_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
 155         { TVP7002_FBIT_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 156         { TVP7002_YUV_Y_G_COEF_LSBS, 0xe3, TVP7002_WRITE },
 157         { TVP7002_YUV_Y_G_COEF_MSBS, 0x16, TVP7002_WRITE },
 158         { TVP7002_YUV_Y_B_COEF_LSBS, 0x4f, TVP7002_WRITE },
 159         { TVP7002_YUV_Y_B_COEF_MSBS, 0x02, TVP7002_WRITE },
 160         { TVP7002_YUV_Y_R_COEF_LSBS, 0xce, TVP7002_WRITE },
 161         { TVP7002_YUV_Y_R_COEF_MSBS, 0x06, TVP7002_WRITE },
 162         { TVP7002_YUV_U_G_COEF_LSBS, 0xab, TVP7002_WRITE },
 163         { TVP7002_YUV_U_G_COEF_MSBS, 0xf3, TVP7002_WRITE },
 164         { TVP7002_YUV_U_B_COEF_LSBS, 0x00, TVP7002_WRITE },
 165         { TVP7002_YUV_U_B_COEF_MSBS, 0x10, TVP7002_WRITE },
 166         { TVP7002_YUV_U_R_COEF_LSBS, 0x55, TVP7002_WRITE },
 167         { TVP7002_YUV_U_R_COEF_MSBS, 0xfc, TVP7002_WRITE },
 168         { TVP7002_YUV_V_G_COEF_LSBS, 0x78, TVP7002_WRITE },
 169         { TVP7002_YUV_V_G_COEF_MSBS, 0xf1, TVP7002_WRITE },
 170         { TVP7002_YUV_V_B_COEF_LSBS, 0x88, TVP7002_WRITE },
 171         { TVP7002_YUV_V_B_COEF_MSBS, 0xfe, TVP7002_WRITE },
 172         { TVP7002_YUV_V_R_COEF_LSBS, 0x00, TVP7002_WRITE },
 173         { TVP7002_YUV_V_R_COEF_MSBS, 0x10, TVP7002_WRITE },
 174         /* This signals end of register values */
 175         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 176 };
 177
 178 /* Register parameters for 480P */
 179 static const struct i2c_reg_value tvp7002_parms_480P[] = {
 180         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x35, TVP7002_WRITE },
 181         { TVP7002_HPLL_FDBK_DIV_LSBS, 0xa0, TVP7002_WRITE },
 182         { TVP7002_HPLL_CRTL, 0x02, TVP7002_WRITE },
 183         { TVP7002_AVID_START_PIXEL_LSBS, 0x91, TVP7002_WRITE },
 184         { TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 185         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x0B, TVP7002_WRITE },
 186         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 187         { TVP7002_VBLK_F_0_START_L_OFF, 0x03, TVP7002_WRITE },
 188         { TVP7002_VBLK_F_1_START_L_OFF, 0x01, TVP7002_WRITE },
 189         { TVP7002_VBLK_F_0_DURATION, 0x13, TVP7002_WRITE },
 190         { TVP7002_VBLK_F_1_DURATION, 0x13, TVP7002_WRITE },
 191         { TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
 192         { TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
 193         { TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
 194         { TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
 195         { TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
 196         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 197 };
 198
 199 /* Register parameters for 576P */
 200 static const struct i2c_reg_value tvp7002_parms_576P[] = {
 201         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x36, TVP7002_WRITE },
 202         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
 203         { TVP7002_HPLL_CRTL, 0x18, TVP7002_WRITE },
 204         { TVP7002_AVID_START_PIXEL_LSBS, 0x9B, TVP7002_WRITE },
 205         { TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 206         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x0F, TVP7002_WRITE },
 207         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 208         { TVP7002_VBLK_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
 209         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 210         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 211         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 212         { TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
 213         { TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
 214         { TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
 215         { TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
 216         { TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
 217         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 218 };
 219
 220 /* Register parameters for 1080I60 */
 221 static const struct i2c_reg_value tvp7002_parms_1080I60[] = {
 222         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
 223         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
 224         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 225         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 226         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 227         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 228         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 229         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 230         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 231         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 232         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 233         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 234         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 235         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 236         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 237         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 238         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 239 };
 240
 241 /* Register parameters for 1080P60 */
 242 static const struct i2c_reg_value tvp7002_parms_1080P60[] = {
 243         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
 244         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
 245         { TVP7002_HPLL_CRTL, 0xE0, TVP7002_WRITE },
 246         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 247         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 248         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 249         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 250         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 251         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 252         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 253         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 254         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 255         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 256         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 257         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 258         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 259         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 260 };
 261
 262 /* Register parameters for 1080I50 */
 263 static const struct i2c_reg_value tvp7002_parms_1080I50[] = {
 264         { TVP7002_HPLL_FDBK_DIV_MSBS, 0xa5, TVP7002_WRITE },
 265         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
 266         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 267         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 268         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 269         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 270         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 271         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 272         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 273         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 274         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 275         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 276         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 277         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 278         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 279         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 280         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 281 };
 282
 283 /* Register parameters for 720P60 */
 284 static const struct i2c_reg_value tvp7002_parms_720P60[] = {
 285         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
 286         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
 287         { TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
 288         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
 289         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 290         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
 291         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
 292         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 293         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 294         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 295         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 296         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 297         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 298         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 299         { TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
 300         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 301         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 302 };
 303
 304 /* Register parameters for 720P50 */
 305 static const struct i2c_reg_value tvp7002_parms_720P50[] = {
 306         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x7b, TVP7002_WRITE },
 307         { TVP7002_HPLL_FDBK_DIV_LSBS, 0xc0, TVP7002_WRITE },
 308         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 309         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
 310         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 311         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
 312         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
 313         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 314         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 315         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 316         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 317         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 318         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 319         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 320         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 321         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 322         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 323 };
 324
 325 /* Timings definition for handling device operation */
 326 struct tvp7002_timings_definition {
 327         struct v4l2_dv_timings timings;
 328         const struct i2c_reg_value *p_settings;
 329         enum v4l2_colorspace color_space;
 330         enum v4l2_field scanmode;
 331         u16 progressive;
 332         u16 lines_per_frame;
 333         u16 cpl_min;
 334         u16 cpl_max;
 335 };
 336
 337 /* Struct list for digital video timings */
 338 static const struct tvp7002_timings_definition tvp7002_timings[] = {
 339         {
 340                 V4L2_DV_BT_CEA_1280X720P60,
 341                 tvp7002_parms_720P60,
 342                 V4L2_COLORSPACE_REC709,
 343                 V4L2_FIELD_NONE,
 344                 1,
 345                 0x2EE,
 346                 135,
 347                 153
 348         },
 349         {
 350                 V4L2_DV_BT_CEA_1920X1080I60,
 351                 tvp7002_parms_1080I60,
 352                 V4L2_COLORSPACE_REC709,
 353                 V4L2_FIELD_INTERLACED,
 354                 0,
 355                 0x465,
 356                 181,
 357                 205
 358         },
 359         {
 360                 V4L2_DV_BT_CEA_1920X1080I50,
 361                 tvp7002_parms_1080I50,
 362                 V4L2_COLORSPACE_REC709,
 363                 V4L2_FIELD_INTERLACED,
 364                 0,
 365                 0x465,
 366                 217,
 367                 245
 368         },
 369         {
 370                 V4L2_DV_BT_CEA_1280X720P50,
 371                 tvp7002_parms_720P50,
 372                 V4L2_COLORSPACE_REC709,
 373                 V4L2_FIELD_NONE,
 374                 1,
 375                 0x2EE,
 376                 163,
 377                 183
 378         },
 379         {
 380                 V4L2_DV_BT_CEA_1920X1080P60,
 381                 tvp7002_parms_1080P60,
 382                 V4L2_COLORSPACE_REC709,
 383                 V4L2_FIELD_NONE,
 384                 1,
 385                 0x465,
 386                 90,
 387                 102
 388         },
 389         {
 390                 V4L2_DV_BT_CEA_720X480P59_94,
 391                 tvp7002_parms_480P,
 392                 V4L2_COLORSPACE_SMPTE170M,
 393                 V4L2_FIELD_NONE,
 394                 1,
 395                 0x20D,
 396                 0xffff,
 397                 0xffff
 398         },
 399         {
 400                 V4L2_DV_BT_CEA_720X576P50,
 401                 tvp7002_parms_576P,
 402                 V4L2_COLORSPACE_SMPTE170M,
 403                 V4L2_FIELD_NONE,
 404                 1,
 405                 0x271,
 406                 0xffff,
 407                 0xffff
 408         }
 409 };
 410
 411 #define NUM_TIMINGS ARRAY_SIZE(tvp7002_timings)
 412
 413 /* Device definition */
 414 struct tvp7002 {
 415         struct v4l2_subdev sd;
 416         struct v4l2_ctrl_handler hdl;
 417         const struct tvp7002_config *pdata;
 418
 419         int ver;
 420         int streaming;
 421
 422         const struct tvp7002_timings_definition *current_timings;
 423         struct media_pad pad;
 424 };
 425
 426 /*
 427  * to_tvp7002 - Obtain device handler TVP7002
 428  * @sd: ptr to v4l2_subdev struct
 429  *
 430  * Returns device handler tvp7002.
 431  */
 432 static inline struct tvp7002 *to_tvp7002(struct v4l2_subdev *sd)
 433 {
 434         return container_of(sd, struct tvp7002, sd);
 435 }
 436
 437 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
 438 {
 439         return &container_of(ctrl->handler, struct tvp7002, hdl)->sd;
 440 }
 441
 442 /*
 443  * tvp7002_read - Read a value from a register in an TVP7002
 444  * @sd: ptr to v4l2_subdev struct
 445  * @addr: TVP7002 register address
 446  * @dst: pointer to 8-bit destination
 447  *
 448  * Returns value read if successful, or non-zero (-1) otherwise.
 449  */
 450 static int tvp7002_read(struct v4l2_subdev *sd, u8 addr, u8 *dst)
 451 {
 452         struct i2c_client *c = v4l2_get_subdevdata(sd);
 453         int retry;
 454         int error;
 455
 456         for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
 457                 error = i2c_smbus_read_byte_data(c, addr);
 458
 459                 if (error >= 0) {
 460                         *dst = (u8)error;
 461                         return 0;
 462                 }
 463
 464                 msleep_interruptible(10);
 465         }
 466         v4l2_err(sd, "TVP7002 read error %d\n", error);
 467         return error;
 468 }
 469
 470 /*
 471  * tvp7002_read_err() - Read a register value with error code
 472  * @sd: pointer to standard V4L2 sub-device structure
 473  * @reg: destination register
 474  * @val: value to be read
 475  * @err: pointer to error value
 476  *
 477  * Read a value in a register and save error value in pointer.
 478  * Also update the register table if successful
 479  */
 480 static inline void tvp7002_read_err(struct v4l2_subdev *sd, u8 reg,
 481                                                         u8 *dst, int *err)
 482 {
 483         if (!*err)
 484                 *err = tvp7002_read(sd, reg, dst);
 485 }
 486
 487 /*
 488  * tvp7002_write() - Write a value to a register in TVP7002
 489  * @sd: ptr to v4l2_subdev struct
 490  * @addr: TVP7002 register address
 491  * @value: value to be written to the register
 492  *
 493  * Write a value to a register in an TVP7002 decoder device.
 494  * Returns zero if successful, or non-zero otherwise.
 495  */
 496 static int tvp7002_write(struct v4l2_subdev *sd, u8 addr, u8 value)
 497 {
 498         struct i2c_client *c;
 499         int retry;
 500         int error;
 501
 502         c = v4l2_get_subdevdata(sd);
 503
 504         for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
 505                 error = i2c_smbus_write_byte_data(c, addr, value);
 506
 507                 if (error >= 0)
 508                         return 0;
 509
 510                 v4l2_warn(sd, "Write: retry ... %d\n", retry);
 511                 msleep_interruptible(10);
 512         }
 513         v4l2_err(sd, "TVP7002 write error %d\n", error);
 514         return error;
 515 }
 516
 517 /*
 518  * tvp7002_write_err() - Write a register value with error code
 519  * @sd: pointer to standard V4L2 sub-device structure
 520  * @reg: destination register
 521  * @val: value to be written
 522  * @err: pointer to error value
 523  *
 524  * Write a value in a register and save error value in pointer.
 525  * Also update the register table if successful
 526  */
 527 static inline void tvp7002_write_err(struct v4l2_subdev *sd, u8 reg,
 528                                                         u8 val, int *err)
 529 {
 530         if (!*err)
 531                 *err = tvp7002_write(sd, reg, val);
 532 }
 533
 534 /*
 535  * tvp7002_write_inittab() - Write initialization values
 536  * @sd: ptr to v4l2_subdev struct
 537  * @regs: ptr to i2c_reg_value struct
 538  *
 539  * Write initialization values.
 540  * Returns zero or -EINVAL if read operation fails.
 541  */
 542 static int tvp7002_write_inittab(struct v4l2_subdev *sd,
 543                                         const struct i2c_reg_value *regs)
 544 {
 545         int error = 0;
 546
 547         /* Initialize the first (defined) registers */
 548         while (TVP7002_EOR != regs->reg) {
 549                 if (TVP7002_WRITE == regs->type)
 550                         tvp7002_write_err(sd, regs->reg, regs->value, &error);
 551                 regs++;
 552         }
 553
 554         return error;
 555 }
 556
 557 static int tvp7002_s_dv_timings(struct v4l2_subdev *sd,
 558                                         struct v4l2_dv_timings *dv_timings)
 559 {
 560         struct tvp7002 *device = to_tvp7002(sd);
 561         const struct v4l2_bt_timings *bt = &dv_timings->bt;
 562         int i;
 563
 564         if (dv_timings->type != V4L2_DV_BT_656_1120)
 565                 return -EINVAL;
 566         for (i = 0; i < NUM_TIMINGS; i++) {
 567                 const struct v4l2_bt_timings *t = &tvp7002_timings[i].timings.bt;
 568
 569                 if (!memcmp(bt, t, &bt->standards - &bt->width)) {
 570                         device->current_timings = &tvp7002_timings[i];
 571                         return tvp7002_write_inittab(sd, tvp7002_timings[i].p_settings);
 572                 }
 573         }
 574         return -EINVAL;
 575 }
 576
 577 static int tvp7002_g_dv_timings(struct v4l2_subdev *sd,
 578                                         struct v4l2_dv_timings *dv_timings)
 579 {
 580         struct tvp7002 *device = to_tvp7002(sd);
 581
 582         *dv_timings = device->current_timings->timings;
 583         return 0;
 584 }
 585
 586 /*
 587  * tvp7002_s_ctrl() - Set a control
 588  * @ctrl: ptr to v4l2_ctrl struct
 589  *
 590  * Set a control in TVP7002 decoder device.
 591  * Returns zero when successful or -EINVAL if register access fails.
 592  */
 593 static int tvp7002_s_ctrl(struct v4l2_ctrl *ctrl)
 594 {
 595         struct v4l2_subdev *sd = to_sd(ctrl);
 596         int error = 0;
 597
 598         switch (ctrl->id) {
 599         case V4L2_CID_GAIN:
 600                 tvp7002_write_err(sd, TVP7002_R_FINE_GAIN, ctrl->val, &error);
 601                 tvp7002_write_err(sd, TVP7002_G_FINE_GAIN, ctrl->val, &error);
 602                 tvp7002_write_err(sd, TVP7002_B_FINE_GAIN, ctrl->val, &error);
 603                 return error;
 604         }
 605         return -EINVAL;
 606 }
 607
 608 /*
 609  * tvp7002_mbus_fmt() - V4L2 decoder interface handler for try/s/g_mbus_fmt
 610  * @sd: pointer to standard V4L2 sub-device structure
 611  * @f: pointer to mediabus format structure
 612  *
 613  * Negotiate the image capture size and mediabus format.
 614  * There is only one possible format, so this single function works for
 615  * get, set and try.
 616  */
 617 static int tvp7002_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *f)
 618 {
 619         struct tvp7002 *device = to_tvp7002(sd);
 620         const struct v4l2_bt_timings *bt = &device->current_timings->timings.bt;
 621
 622         f->width = bt->width;
 623         f->height = bt->height;
 624         f->code = V4L2_MBUS_FMT_YUYV10_1X20;
 625         f->field = device->current_timings->scanmode;
 626         f->colorspace = device->current_timings->color_space;
 627
 628         v4l2_dbg(1, debug, sd, "MBUS_FMT: Width - %d, Height - %d",
 629                         f->width, f->height);
 630         return 0;
 631 }
 632
 633 /*
 634  * tvp7002_query_dv() - query DV timings
 635  * @sd: pointer to standard V4L2 sub-device structure
 636  * @index: index into the tvp7002_timings array
 637  *
 638  * Returns the current DV timings detected by TVP7002. If no active input is
 639  * detected, returns -EINVAL
 640  */
 641 static int tvp7002_query_dv(struct v4l2_subdev *sd, int *index)
 642 {
 643         const struct tvp7002_timings_definition *timings = tvp7002_timings;
 644         u8 progressive;
 645         u32 lpfr;
 646         u32 cpln;
 647         int error = 0;
 648         u8 lpf_lsb;
 649         u8 lpf_msb;
 650         u8 cpl_lsb;
 651         u8 cpl_msb;
 652
 653         /* Return invalid index if no active input is detected */
 654         *index = NUM_TIMINGS;
 655
 656         /* Read standards from device registers */
 657         tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_LSBS, &lpf_lsb, &error);
 658         tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_MSBS, &lpf_msb, &error);
 659
 660         if (error < 0)
 661                 return error;
 662
 663         tvp7002_read_err(sd, TVP7002_CLK_L_STAT_LSBS, &cpl_lsb, &error);
 664         tvp7002_read_err(sd, TVP7002_CLK_L_STAT_MSBS, &cpl_msb, &error);
 665
 666         if (error < 0)
 667                 return error;
 668
 669         /* Get lines per frame, clocks per line and interlaced/progresive */
 670         lpfr = lpf_lsb | ((TVP7002_CL_MASK & lpf_msb) << TVP7002_CL_SHIFT);
 671         cpln = cpl_lsb | ((TVP7002_CL_MASK & cpl_msb) << TVP7002_CL_SHIFT);
 672         progressive = (lpf_msb & TVP7002_INPR_MASK) >> TVP7002_IP_SHIFT;
 673
 674         /* Do checking of video modes */
 675         for (*index = 0; *index < NUM_TIMINGS; (*index)++, timings++)
 676                 if (lpfr == timings->lines_per_frame &&
 677                         progressive == timings->progressive) {
 678                         if (timings->cpl_min == 0xffff)
 679                                 break;
 680                         if (cpln >= timings->cpl_min && cpln <= timings->cpl_max)
 681                                 break;
 682                 }
 683
 684         if (*index == NUM_TIMINGS) {
 685                 v4l2_dbg(1, debug, sd, "detection failed: lpf = %x, cpl = %x\n",
 686                                                                 lpfr, cpln);
 687                 return -ENOLINK;
 688         }
 689
 690         /* Update lines per frame and clocks per line info */
 691         v4l2_dbg(1, debug, sd, "detected timings: %d\n", *index);
 692         return 0;
 693 }
 694
 695 static int tvp7002_query_dv_timings(struct v4l2_subdev *sd,
 696                                         struct v4l2_dv_timings *timings)
 697 {
 698         int index;
 699         int err = tvp7002_query_dv(sd, &index);
 700
 701         if (err)
 702                 return err;
 703         *timings = tvp7002_timings[index].timings;
 704         return 0;
 705 }
 706
 707 #ifdef CONFIG_VIDEO_ADV_DEBUG
 708 /*
 709  * tvp7002_g_register() - Get the value of a register
 710  * @sd: ptr to v4l2_subdev struct
 711  * @reg: ptr to v4l2_dbg_register struct
 712  *
 713  * Get the value of a TVP7002 decoder device register.
 714  * Returns zero when successful, -EINVAL if register read fails or
 715  * access to I2C client fails.
 716  */
 717 static int tvp7002_g_register(struct v4l2_subdev *sd,
 718                                                 struct v4l2_dbg_register *reg)
 719 {
 720         u8 val;
 721         int ret;
 722
 723         ret = tvp7002_read(sd, reg->reg & 0xff, &val);
 724         reg->val = val;
 725         return ret;
 726 }
 727
 728 /*
 729  * tvp7002_s_register() - set a control
 730  * @sd: ptr to v4l2_subdev struct
 731  * @reg: ptr to v4l2_dbg_register struct
 732  *
 733  * Get the value of a TVP7002 decoder device register.
 734  * Returns zero when successful, -EINVAL if register read fails.
 735  */
 736 static int tvp7002_s_register(struct v4l2_subdev *sd,
 737                                                 const struct v4l2_dbg_register *reg)
 738 {
 739         return tvp7002_write(sd, reg->reg & 0xff, reg->val & 0xff);
 740 }
 741 #endif
 742
 743 /*
 744  * tvp7002_enum_mbus_fmt() - Enum supported mediabus formats
 745  * @sd: pointer to standard V4L2 sub-device structure
 746  * @index: format index
 747  * @code: pointer to mediabus format
 748  *
 749  * Enumerate supported mediabus formats.
 750  */
 751
 752 static int tvp7002_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned index,
 753                                         enum v4l2_mbus_pixelcode *code)
 754 {
 755         /* Check requested format index is within range */
 756         if (index)
 757                 return -EINVAL;
 758         *code = V4L2_MBUS_FMT_YUYV10_1X20;
 759         return 0;
 760 }
 761
 762 /*
 763  * tvp7002_s_stream() - V4L2 decoder i/f handler for s_stream
 764  * @sd: pointer to standard V4L2 sub-device structure
 765  * @enable: streaming enable or disable
 766  *
 767  * Sets streaming to enable or disable, if possible.
 768  */
 769 static int tvp7002_s_stream(struct v4l2_subdev *sd, int enable)
 770 {
 771         struct tvp7002 *device = to_tvp7002(sd);
 772         int error = 0;
 773
 774         if (device->streaming == enable)
 775                 return 0;
 776
 777         if (enable) {
 778                 /* Set output state on (low impedance means stream on) */
 779                 error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x00);
 780                 device->streaming = enable;
 781         } else {
 782                 /* Set output state off (high impedance means stream off) */
 783                 error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x03);
 784                 if (error)
 785                         v4l2_dbg(1, debug, sd, "Unable to stop streaming\n");
 786
 787                 device->streaming = enable;
 788         }
 789
 790         return error;
 791 }
 792
 793 /*
 794  * tvp7002_log_status() - Print information about register settings
 795  * @sd: ptr to v4l2_subdev struct
 796  *
 797  * Log register values of a TVP7002 decoder device.
 798  * Returns zero or -EINVAL if read operation fails.
 799  */
 800 static int tvp7002_log_status(struct v4l2_subdev *sd)
 801 {
 802         struct tvp7002 *device = to_tvp7002(sd);
 803         const struct v4l2_bt_timings *bt;
 804         int detected;
 805
 806         /* Find my current timings */
 807         tvp7002_query_dv(sd, &detected);
 808
 809         bt = &device->current_timings->timings.bt;
 810         v4l2_info(sd, "Selected DV Timings: %ux%u\n", bt->width, bt->height);
 811         if (detected == NUM_TIMINGS) {
 812                 v4l2_info(sd, "Detected DV Timings: None\n");
 813         } else {
 814                 bt = &tvp7002_timings[detected].timings.bt;
 815                 v4l2_info(sd, "Detected DV Timings: %ux%u\n",
 816                                 bt->width, bt->height);
 817         }
 818         v4l2_info(sd, "Streaming enabled: %s\n",
 819                                         device->streaming ? "yes" : "no");
 820
 821         /* Print the current value of the gain control */
 822         v4l2_ctrl_handler_log_status(&device->hdl, sd->name);
 823
 824         return 0;
 825 }
 826
 827 static int tvp7002_enum_dv_timings(struct v4l2_subdev *sd,
 828                 struct v4l2_enum_dv_timings *timings)
 829 {
 830         /* Check requested format index is within range */
 831         if (timings->index >= NUM_TIMINGS)
 832                 return -EINVAL;
 833
 834         timings->timings = tvp7002_timings[timings->index].timings;
 835         return 0;
 836 }
 837
 838 static const struct v4l2_ctrl_ops tvp7002_ctrl_ops = {
 839         .s_ctrl = tvp7002_s_ctrl,
 840 };
 841
 842 /*
 843  * tvp7002_enum_mbus_code() - Enum supported digital video format on pad
 844  * @sd: pointer to standard V4L2 sub-device structure
 845  * @fh: file handle for the subdev
 846  * @code: pointer to subdev enum mbus code struct
 847  *
 848  * Enumerate supported digital video formats for pad.
 849  */
 850 static int
 851 tvp7002_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
 852                        struct v4l2_subdev_mbus_code_enum *code)
 853 {
 854         /* Check requested format index is within range */
 855         if (code->index != 0)
 856                 return -EINVAL;
 857
 858         code->code = V4L2_MBUS_FMT_YUYV10_1X20;
 859
 860         return 0;
 861 }
 862
 863 /*
 864  * tvp7002_get_pad_format() - get video format on pad
 865  * @sd: pointer to standard V4L2 sub-device structure
 866  * @fh: file handle for the subdev
 867  * @fmt: pointer to subdev format struct
 868  *
 869  * get video format for pad.
 870  */
 871 static int
 872 tvp7002_get_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
 873                        struct v4l2_subdev_format *fmt)
 874 {
 875         struct tvp7002 *tvp7002 = to_tvp7002(sd);
 876
 877         fmt->format.code = V4L2_MBUS_FMT_YUYV10_1X20;
 878         fmt->format.width = tvp7002->current_timings->timings.bt.width;
 879         fmt->format.height = tvp7002->current_timings->timings.bt.height;
 880         fmt->format.field = tvp7002->current_timings->scanmode;
 881         fmt->format.colorspace = tvp7002->current_timings->color_space;
 882
 883         return 0;
 884 }
 885
 886 /*
 887  * tvp7002_set_pad_format() - set video format on pad
 888  * @sd: pointer to standard V4L2 sub-device structure
 889  * @fh: file handle for the subdev
 890  * @fmt: pointer to subdev format struct
 891  *
 892  * set video format for pad.
 893  */
 894 static int
 895 tvp7002_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
 896                        struct v4l2_subdev_format *fmt)
 897 {
 898         return tvp7002_get_pad_format(sd, fh, fmt);
 899 }
 900
 901 /* V4L2 core operation handlers */
 902 static const struct v4l2_subdev_core_ops tvp7002_core_ops = {
 903         .log_status = tvp7002_log_status,
 904         .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 905         .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 906         .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
 907         .g_ctrl = v4l2_subdev_g_ctrl,
 908         .s_ctrl = v4l2_subdev_s_ctrl,
 909         .queryctrl = v4l2_subdev_queryctrl,
 910         .querymenu = v4l2_subdev_querymenu,
 911 #ifdef CONFIG_VIDEO_ADV_DEBUG
 912         .g_register = tvp7002_g_register,
 913         .s_register = tvp7002_s_register,
 914 #endif
 915 };
 916
 917 /* Specific video subsystem operation handlers */
 918 static const struct v4l2_subdev_video_ops tvp7002_video_ops = {
 919         .g_dv_timings = tvp7002_g_dv_timings,
 920         .s_dv_timings = tvp7002_s_dv_timings,
 921         .enum_dv_timings = tvp7002_enum_dv_timings,
 922         .query_dv_timings = tvp7002_query_dv_timings,
 923         .s_stream = tvp7002_s_stream,
 924         .g_mbus_fmt = tvp7002_mbus_fmt,
 925         .try_mbus_fmt = tvp7002_mbus_fmt,
 926         .s_mbus_fmt = tvp7002_mbus_fmt,
 927         .enum_mbus_fmt = tvp7002_enum_mbus_fmt,
 928 };
 929
 930 /* media pad related operation handlers */
 931 static const struct v4l2_subdev_pad_ops tvp7002_pad_ops = {
 932         .enum_mbus_code = tvp7002_enum_mbus_code,
 933         .get_fmt = tvp7002_get_pad_format,
 934         .set_fmt = tvp7002_set_pad_format,
 935 };
 936
 937 /* V4L2 top level operation handlers */
 938 static const struct v4l2_subdev_ops tvp7002_ops = {
 939         .core = &tvp7002_core_ops,
 940         .video = &tvp7002_video_ops,
 941         .pad = &tvp7002_pad_ops,
 942 };
 943
 944 /*
 945  * tvp7002_probe - Probe a TVP7002 device
 946  * @c: ptr to i2c_client struct
 947  * @id: ptr to i2c_device_id struct
 948  *
 949  * Initialize the TVP7002 device
 950  * Returns zero when successful, -EINVAL if register read fails or
 951  * -EIO if i2c access is not available.
 952  */
 953 static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
 954 {
 955         struct v4l2_subdev *sd;
 956         struct tvp7002 *device;
 957         struct v4l2_dv_timings timings;
 958         int polarity_a;
 959         int polarity_b;
 960         u8 revision;
 961
 962         int error;
 963
 964         /* Check if the adapter supports the needed features */
 965         if (!i2c_check_functionality(c->adapter,
 966                 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
 967                 return -EIO;
 968
 969         if (!c->dev.platform_data) {
 970                 v4l_err(c, "No platform data!!\n");
 971                 return -ENODEV;
 972         }
 973
 974         device = devm_kzalloc(&c->dev, sizeof(struct tvp7002), GFP_KERNEL);
 975
 976         if (!device)
 977                 return -ENOMEM;
 978
 979         sd = &device->sd;
 980         device->pdata = c->dev.platform_data;
 981         device->current_timings = tvp7002_timings;
 982
 983         /* Tell v4l2 the device is ready */
 984         v4l2_i2c_subdev_init(sd, c, &tvp7002_ops);
 985         v4l_info(c, "tvp7002 found @ 0x%02x (%s)\n",
 986                                         c->addr, c->adapter->name);
 987
 988         error = tvp7002_read(sd, TVP7002_CHIP_REV, &revision);
 989         if (error < 0)
 990                 return error;
 991
 992         /* Get revision number */
 993         v4l2_info(sd, "Rev. %02x detected.\n", revision);
 994         if (revision != 0x02)
 995                 v4l2_info(sd, "Unknown revision detected.\n");
 996
 997         /* Initializes TVP7002 to its default values */
 998         error = tvp7002_write_inittab(sd, tvp7002_init_default);
 999
1000         if (error < 0)
1001                 return error;
1002
1003         /* Set polarity information after registers have been set */
1004         polarity_a = 0x20 | device->pdata->hs_polarity << 5
1005                         | device->pdata->vs_polarity << 2;
1006         error = tvp7002_write(sd, TVP7002_SYNC_CTL_1, polarity_a);
1007         if (error < 0)
1008                 return error;
1009
1010         polarity_b = 0x01  | device->pdata->fid_polarity << 2
1011                         | device->pdata->sog_polarity << 1
1012                         | device->pdata->clk_polarity;
1013         error = tvp7002_write(sd, TVP7002_MISC_CTL_3, polarity_b);
1014         if (error < 0)
1015                 return error;
1016
1017         /* Set registers according to default video mode */
1018         timings = device->current_timings->timings;
1019         error = tvp7002_s_dv_timings(sd, &timings);
1020
1021 #if defined(CONFIG_MEDIA_CONTROLLER)
1022         strlcpy(sd->name, TVP7002_MODULE_NAME, sizeof(sd->name));
1023         device->pad.flags = MEDIA_PAD_FL_SOURCE;
1024         device->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1025         device->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
1026
1027         error = media_entity_init(&device->sd.entity, 1, &device->pad, 0);
1028         if (error < 0)
1029                 return error;
1030 #endif
1031
1032         v4l2_ctrl_handler_init(&device->hdl, 1);
1033         v4l2_ctrl_new_std(&device->hdl, &tvp7002_ctrl_ops,
1034                         V4L2_CID_GAIN, 0, 255, 1, 0);
1035         sd->ctrl_handler = &device->hdl;
1036         if (device->hdl.error) {
1037                 error = device->hdl.error;
1038                 goto error;
1039         }
1040         v4l2_ctrl_handler_setup(&device->hdl);
1041
1042         return 0;
1043
1044 error:
1045         v4l2_ctrl_handler_free(&device->hdl);
1046 #if defined(CONFIG_MEDIA_CONTROLLER)
1047         media_entity_cleanup(&device->sd.entity);
1048 #endif
1049         return error;
1050 }
1051
1052 /*
1053  * tvp7002_remove - Remove TVP7002 device support
1054  * @c: ptr to i2c_client struct
1055  *
1056  * Reset the TVP7002 device
1057  * Returns zero.
1058  */
1059 static int tvp7002_remove(struct i2c_client *c)
1060 {
1061         struct v4l2_subdev *sd = i2c_get_clientdata(c);
1062         struct tvp7002 *device = to_tvp7002(sd);
1063
1064         v4l2_dbg(1, debug, sd, "Removing tvp7002 adapter"
1065                                 "on address 0x%x\n", c->addr);
1066 #if defined(CONFIG_MEDIA_CONTROLLER)
1067         media_entity_cleanup(&device->sd.entity);
1068 #endif
1069         v4l2_device_unregister_subdev(sd);
1070         v4l2_ctrl_handler_free(&device->hdl);
1071         return 0;
1072 }
1073
1074 /* I2C Device ID table */
1075 static const struct i2c_device_id tvp7002_id[] = {
1076         { "tvp7002", 0 },
1077         { }
1078 };
1079 MODULE_DEVICE_TABLE(i2c, tvp7002_id);
1080
1081 /* I2C driver data */
1082 static struct i2c_driver tvp7002_driver = {
1083         .driver = {
1084                 .owner = THIS_MODULE,
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);