drivers/media/video/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 <media/tvp7002.h>
  33 #include <media/v4l2-device.h>
  34 #include <media/v4l2-chip-ident.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 /* Module Name */
  44 #define TVP7002_MODULE_NAME     "tvp7002"
  45
  46 /* I2C retry attempts */
  47 #define I2C_RETRY_COUNT         (5)
  48
  49 /* End of registers */
  50 #define TVP7002_EOR             0x5c
  51
  52 /* Read write definition for registers */
  53 #define TVP7002_READ            0
  54 #define TVP7002_WRITE           1
  55 #define TVP7002_RESERVED        2
  56
  57 /* Interlaced vs progressive mask and shift */
  58 #define TVP7002_IP_SHIFT        5
  59 #define TVP7002_INPR_MASK       (0x01 << TVP7002_IP_SHIFT)
  60
  61 /* Shift for CPL and LPF registers */
  62 #define TVP7002_CL_SHIFT        8
  63 #define TVP7002_CL_MASK         0x0f
  64
  65 /* Debug functions */
  66 static int debug;
  67 module_param(debug, bool, 0644);
  68 MODULE_PARM_DESC(debug, "Debug level (0-2)");
  69
  70 /* Structure for register values */
  71 struct i2c_reg_value {
  72         u8 reg;
  73         u8 value;
  74         u8 type;
  75 };
  76
  77 /*
  78  * Register default values (according to tvp7002 datasheet)
  79  * In the case of read-only registers, the value (0xff) is
  80  * never written. R/W functionality is controlled by the
  81  * writable bit in the register struct definition.
  82  */
  83 static const struct i2c_reg_value tvp7002_init_default[] = {
  84         { TVP7002_CHIP_REV, 0xff, TVP7002_READ },
  85         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
  86         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
  87         { TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
  88         { TVP7002_HPLL_PHASE_SEL, 0x80, TVP7002_WRITE },
  89         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
  90         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
  91         { TVP7002_HSYNC_OUT_W, 0x60, TVP7002_WRITE },
  92         { TVP7002_B_FINE_GAIN, 0x00, TVP7002_WRITE },
  93         { TVP7002_G_FINE_GAIN, 0x00, TVP7002_WRITE },
  94         { TVP7002_R_FINE_GAIN, 0x00, TVP7002_WRITE },
  95         { TVP7002_B_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  96         { TVP7002_G_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  97         { TVP7002_R_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  98         { TVP7002_SYNC_CTL_1, 0x20, TVP7002_WRITE },
  99         { TVP7002_HPLL_AND_CLAMP_CTL, 0x2e, TVP7002_WRITE },
 100         { TVP7002_SYNC_ON_G_THRS, 0x5d, TVP7002_WRITE },
 101         { TVP7002_SYNC_SEPARATOR_THRS, 0x47, TVP7002_WRITE },
 102         { TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
 103         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 104         { TVP7002_SYNC_DETECT_STAT, 0xff, TVP7002_READ },
 105         { TVP7002_OUT_FORMATTER, 0x47, TVP7002_WRITE },
 106         { TVP7002_MISC_CTL_1, 0x01, TVP7002_WRITE },
 107         { TVP7002_MISC_CTL_2, 0x00, TVP7002_WRITE },
 108         { TVP7002_MISC_CTL_3, 0x01, TVP7002_WRITE },
 109         { TVP7002_IN_MUX_SEL_1, 0x00, TVP7002_WRITE },
 110         { TVP7002_IN_MUX_SEL_2, 0x67, TVP7002_WRITE },
 111         { TVP7002_B_AND_G_COARSE_GAIN, 0x77, TVP7002_WRITE },
 112         { TVP7002_R_COARSE_GAIN, 0x07, TVP7002_WRITE },
 113         { TVP7002_FINE_OFF_LSBS, 0x00, TVP7002_WRITE },
 114         { TVP7002_B_COARSE_OFF, 0x10, TVP7002_WRITE },
 115         { TVP7002_G_COARSE_OFF, 0x10, TVP7002_WRITE },
 116         { TVP7002_R_COARSE_OFF, 0x10, TVP7002_WRITE },
 117         { TVP7002_HSOUT_OUT_START, 0x08, TVP7002_WRITE },
 118         { TVP7002_MISC_CTL_4, 0x00, TVP7002_WRITE },
 119         { TVP7002_B_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 120         { TVP7002_G_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 121         { TVP7002_R_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 122         { TVP7002_AUTO_LVL_CTL_ENABLE, 0x80, TVP7002_WRITE },
 123         { TVP7002_DGTL_ALC_OUT_MSBS, 0xff, TVP7002_READ },
 124         { TVP7002_AUTO_LVL_CTL_FILTER, 0x53, TVP7002_WRITE },
 125         { 0x29, 0x08, TVP7002_RESERVED },
 126         { TVP7002_FINE_CLAMP_CTL, 0x07, TVP7002_WRITE },
 127         /* PWR_CTL is controlled only by the probe and reset functions */
 128         { TVP7002_PWR_CTL, 0x00, TVP7002_RESERVED },
 129         { TVP7002_ADC_SETUP, 0x50, TVP7002_WRITE },
 130         { TVP7002_COARSE_CLAMP_CTL, 0x00, TVP7002_WRITE },
 131         { TVP7002_SOG_CLAMP, 0x80, TVP7002_WRITE },
 132         { TVP7002_RGB_COARSE_CLAMP_CTL, 0x00, TVP7002_WRITE },
 133         { TVP7002_SOG_COARSE_CLAMP_CTL, 0x04, TVP7002_WRITE },
 134         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 135         { 0x32, 0x18, TVP7002_RESERVED },
 136         { 0x33, 0x60, TVP7002_RESERVED },
 137         { TVP7002_MVIS_STRIPPER_W, 0xff, TVP7002_RESERVED },
 138         { TVP7002_VSYNC_ALGN, 0x10, TVP7002_WRITE },
 139         { TVP7002_SYNC_BYPASS, 0x00, TVP7002_WRITE },
 140         { TVP7002_L_FRAME_STAT_LSBS, 0xff, TVP7002_READ },
 141         { TVP7002_L_FRAME_STAT_MSBS, 0xff, TVP7002_READ },
 142         { TVP7002_CLK_L_STAT_LSBS, 0xff, TVP7002_READ },
 143         { TVP7002_CLK_L_STAT_MSBS, 0xff, TVP7002_READ },
 144         { TVP7002_HSYNC_W, 0xff, TVP7002_READ },
 145         { TVP7002_VSYNC_W, 0xff, TVP7002_READ },
 146         { TVP7002_L_LENGTH_TOL, 0x03, TVP7002_WRITE },
 147         { 0x3e, 0x60, TVP7002_RESERVED },
 148         { TVP7002_VIDEO_BWTH_CTL, 0x01, TVP7002_WRITE },
 149         { TVP7002_AVID_START_PIXEL_LSBS, 0x01, TVP7002_WRITE },
 150         { TVP7002_AVID_START_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
 151         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 152         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
 153         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 154         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 155         { TVP7002_VBLK_F_0_DURATION, 0x1e, TVP7002_WRITE },
 156         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 157         { TVP7002_FBIT_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
 158         { TVP7002_FBIT_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 159         { TVP7002_YUV_Y_G_COEF_LSBS, 0xe3, TVP7002_WRITE },
 160         { TVP7002_YUV_Y_G_COEF_MSBS, 0x16, TVP7002_WRITE },
 161         { TVP7002_YUV_Y_B_COEF_LSBS, 0x4f, TVP7002_WRITE },
 162         { TVP7002_YUV_Y_B_COEF_MSBS, 0x02, TVP7002_WRITE },
 163         { TVP7002_YUV_Y_R_COEF_LSBS, 0xce, TVP7002_WRITE },
 164         { TVP7002_YUV_Y_R_COEF_MSBS, 0x06, TVP7002_WRITE },
 165         { TVP7002_YUV_U_G_COEF_LSBS, 0xab, TVP7002_WRITE },
 166         { TVP7002_YUV_U_G_COEF_MSBS, 0xf3, TVP7002_WRITE },
 167         { TVP7002_YUV_U_B_COEF_LSBS, 0x00, TVP7002_WRITE },
 168         { TVP7002_YUV_U_B_COEF_MSBS, 0x10, TVP7002_WRITE },
 169         { TVP7002_YUV_U_R_COEF_LSBS, 0x55, TVP7002_WRITE },
 170         { TVP7002_YUV_U_R_COEF_MSBS, 0xfc, TVP7002_WRITE },
 171         { TVP7002_YUV_V_G_COEF_LSBS, 0x78, TVP7002_WRITE },
 172         { TVP7002_YUV_V_G_COEF_MSBS, 0xf1, TVP7002_WRITE },
 173         { TVP7002_YUV_V_B_COEF_LSBS, 0x88, TVP7002_WRITE },
 174         { TVP7002_YUV_V_B_COEF_MSBS, 0xfe, TVP7002_WRITE },
 175         { TVP7002_YUV_V_R_COEF_LSBS, 0x00, TVP7002_WRITE },
 176         { TVP7002_YUV_V_R_COEF_MSBS, 0x10, TVP7002_WRITE },
 177         /* This signals end of register values */
 178         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 179 };
 180
 181 /* Register parameters for 480P */
 182 static const struct i2c_reg_value tvp7002_parms_480P[] = {
 183         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x35, TVP7002_WRITE },
 184         { TVP7002_HPLL_FDBK_DIV_LSBS, 0xa0, TVP7002_WRITE },
 185         { TVP7002_HPLL_CRTL, 0x02, TVP7002_WRITE },
 186         { TVP7002_HPLL_PHASE_SEL, 0x14, TVP7002_WRITE },
 187         { TVP7002_AVID_START_PIXEL_LSBS, 0x91, TVP7002_WRITE },
 188         { TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 189         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x0B, TVP7002_WRITE },
 190         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 191         { TVP7002_VBLK_F_0_START_L_OFF, 0x03, TVP7002_WRITE },
 192         { TVP7002_VBLK_F_1_START_L_OFF, 0x01, TVP7002_WRITE },
 193         { TVP7002_VBLK_F_0_DURATION, 0x13, TVP7002_WRITE },
 194         { TVP7002_VBLK_F_1_DURATION, 0x13, TVP7002_WRITE },
 195         { TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
 196         { TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
 197         { TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
 198         { TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
 199         { TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
 200         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 201 };
 202
 203 /* Register parameters for 576P */
 204 static const struct i2c_reg_value tvp7002_parms_576P[] = {
 205         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x36, TVP7002_WRITE },
 206         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
 207         { TVP7002_HPLL_CRTL, 0x18, TVP7002_WRITE },
 208         { TVP7002_HPLL_PHASE_SEL, 0x14, TVP7002_WRITE },
 209         { TVP7002_AVID_START_PIXEL_LSBS, 0x9B, TVP7002_WRITE },
 210         { TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 211         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x0F, TVP7002_WRITE },
 212         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 213         { TVP7002_VBLK_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
 214         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 215         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 216         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 217         { TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
 218         { TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
 219         { TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
 220         { TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
 221         { TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
 222         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 223 };
 224
 225 /* Register parameters for 1080I60 */
 226 static const struct i2c_reg_value tvp7002_parms_1080I60[] = {
 227         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
 228         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
 229         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 230         { TVP7002_HPLL_PHASE_SEL, 0x14, TVP7002_WRITE },
 231         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 232         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 233         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 234         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 235         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 236         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 237         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 238         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 239         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 240         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 241         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 242         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 243         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 244         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 245 };
 246
 247 /* Register parameters for 1080P60 */
 248 static const struct i2c_reg_value tvp7002_parms_1080P60[] = {
 249         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
 250         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
 251         { TVP7002_HPLL_CRTL, 0xE0, TVP7002_WRITE },
 252         { TVP7002_HPLL_PHASE_SEL, 0x14, TVP7002_WRITE },
 253         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 254         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 255         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 256         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 257         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 258         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 259         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 260         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 261         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 262         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 263         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 264         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 265         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 266         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 267 };
 268
 269 /* Register parameters for 1080I50 */
 270 static const struct i2c_reg_value tvp7002_parms_1080I50[] = {
 271         { TVP7002_HPLL_FDBK_DIV_MSBS, 0xa5, TVP7002_WRITE },
 272         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
 273         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 274         { TVP7002_HPLL_PHASE_SEL, 0x14, TVP7002_WRITE },
 275         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 276         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 277         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 278         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 279         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 280         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 281         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 282         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 283         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 284         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 285         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 286         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 287         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 288         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 289 };
 290
 291 /* Register parameters for 720P60 */
 292 static const struct i2c_reg_value tvp7002_parms_720P60[] = {
 293         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
 294         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
 295         { TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
 296         { TVP7002_HPLL_PHASE_SEL, 0x16, TVP7002_WRITE },
 297         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
 298         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 299         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
 300         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
 301         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 302         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 303         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 304         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 305         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 306         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 307         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 308         { TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
 309         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 310         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 311 };
 312
 313 /* Register parameters for 720P50 */
 314 static const struct i2c_reg_value tvp7002_parms_720P50[] = {
 315         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x7b, TVP7002_WRITE },
 316         { TVP7002_HPLL_FDBK_DIV_LSBS, 0xc0, TVP7002_WRITE },
 317         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 318         { TVP7002_HPLL_PHASE_SEL, 0x16, TVP7002_WRITE },
 319         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
 320         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 321         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
 322         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
 323         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 324         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 325         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 326         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 327         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 328         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 329         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 330         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 331         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 332         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 333 };
 334
 335 /* Preset definition for handling device operation */
 336 struct tvp7002_preset_definition {
 337         u32 preset;
 338         const struct i2c_reg_value *p_settings;
 339         enum v4l2_colorspace color_space;
 340         enum v4l2_field scanmode;
 341         u16 progressive;
 342         u16 lines_per_frame;
 343         u16 cpl_min;
 344         u16 cpl_max;
 345 };
 346
 347 /* Struct list for digital video presets */
 348 static const struct tvp7002_preset_definition tvp7002_presets[] = {
 349         {
 350                 V4L2_DV_720P60,
 351                 tvp7002_parms_720P60,
 352                 V4L2_COLORSPACE_REC709,
 353                 V4L2_FIELD_NONE,
 354                 1,
 355                 0x2EE,
 356                 135,
 357                 153
 358         },
 359         {
 360                 V4L2_DV_1080I60,
 361                 tvp7002_parms_1080I60,
 362                 V4L2_COLORSPACE_REC709,
 363                 V4L2_FIELD_INTERLACED,
 364                 0,
 365                 0x465,
 366                 181,
 367                 205
 368         },
 369         {
 370                 V4L2_DV_1080I50,
 371                 tvp7002_parms_1080I50,
 372                 V4L2_COLORSPACE_REC709,
 373                 V4L2_FIELD_INTERLACED,
 374                 0,
 375                 0x465,
 376                 217,
 377                 245
 378         },
 379         {
 380                 V4L2_DV_720P50,
 381                 tvp7002_parms_720P50,
 382                 V4L2_COLORSPACE_REC709,
 383                 V4L2_FIELD_NONE,
 384                 1,
 385                 0x2EE,
 386                 163,
 387                 183
 388         },
 389         {
 390                 V4L2_DV_1080P60,
 391                 tvp7002_parms_1080P60,
 392                 V4L2_COLORSPACE_REC709,
 393                 V4L2_FIELD_NONE,
 394                 1,
 395                 0x465,
 396                 90,
 397                 102
 398         },
 399         {
 400                 V4L2_DV_480P59_94,
 401                 tvp7002_parms_480P,
 402                 V4L2_COLORSPACE_SMPTE170M,
 403                 V4L2_FIELD_NONE,
 404                 1,
 405                 0x20D,
 406                 0xffff,
 407                 0xffff
 408         },
 409         {
 410                 V4L2_DV_576P50,
 411                 tvp7002_parms_576P,
 412                 V4L2_COLORSPACE_SMPTE170M,
 413                 V4L2_FIELD_NONE,
 414                 1,
 415                 0x271,
 416                 0xffff,
 417                 0xffff
 418         }
 419 };
 420
 421 #define NUM_PRESETS     ARRAY_SIZE(tvp7002_presets)
 422
 423 /* Device definition */
 424 struct tvp7002 {
 425         struct v4l2_subdev sd;
 426         struct v4l2_ctrl_handler hdl;
 427         const struct tvp7002_config *pdata;
 428
 429         int ver;
 430         int streaming;
 431
 432         const struct tvp7002_preset_definition *current_preset;
 433 };
 434
 435 /*
 436  * to_tvp7002 - Obtain device handler TVP7002
 437  * @sd: ptr to v4l2_subdev struct
 438  *
 439  * Returns device handler tvp7002.
 440  */
 441 static inline struct tvp7002 *to_tvp7002(struct v4l2_subdev *sd)
 442 {
 443         return container_of(sd, struct tvp7002, sd);
 444 }
 445
 446 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
 447 {
 448         return &container_of(ctrl->handler, struct tvp7002, hdl)->sd;
 449 }
 450
 451 /*
 452  * tvp7002_read - Read a value from a register in an TVP7002
 453  * @sd: ptr to v4l2_subdev struct
 454  * @addr: TVP7002 register address
 455  * @dst: pointer to 8-bit destination
 456  *
 457  * Returns value read if successful, or non-zero (-1) otherwise.
 458  */
 459 static int tvp7002_read(struct v4l2_subdev *sd, u8 addr, u8 *dst)
 460 {
 461         struct i2c_client *c = v4l2_get_subdevdata(sd);
 462         int retry;
 463         int error;
 464
 465         for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
 466                 error = i2c_smbus_read_byte_data(c, addr);
 467
 468                 if (error >= 0) {
 469                         *dst = (u8)error;
 470                         return 0;
 471                 }
 472
 473                 msleep_interruptible(10);
 474         }
 475         v4l2_err(sd, "TVP7002 read error %d\n", error);
 476         return error;
 477 }
 478
 479 /*
 480  * tvp7002_read_err() - Read a register value with error code
 481  * @sd: pointer to standard V4L2 sub-device structure
 482  * @reg: destination register
 483  * @val: value to be read
 484  * @err: pointer to error value
 485  *
 486  * Read a value in a register and save error value in pointer.
 487  * Also update the register table if successful
 488  */
 489 static inline void tvp7002_read_err(struct v4l2_subdev *sd, u8 reg,
 490                                                         u8 *dst, int *err)
 491 {
 492         if (!*err)
 493                 *err = tvp7002_read(sd, reg, dst);
 494 }
 495
 496 /*
 497  * tvp7002_write() - Write a value to a register in TVP7002
 498  * @sd: ptr to v4l2_subdev struct
 499  * @addr: TVP7002 register address
 500  * @value: value to be written to the register
 501  *
 502  * Write a value to a register in an TVP7002 decoder device.
 503  * Returns zero if successful, or non-zero otherwise.
 504  */
 505 static int tvp7002_write(struct v4l2_subdev *sd, u8 addr, u8 value)
 506 {
 507         struct i2c_client *c;
 508         int retry;
 509         int error;
 510
 511         c = v4l2_get_subdevdata(sd);
 512
 513         for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
 514                 error = i2c_smbus_write_byte_data(c, addr, value);
 515
 516                 if (error >= 0)
 517                         return 0;
 518
 519                 v4l2_warn(sd, "Write: retry ... %d\n", retry);
 520                 msleep_interruptible(10);
 521         }
 522         v4l2_err(sd, "TVP7002 write error %d\n", error);
 523         return error;
 524 }
 525
 526 /*
 527  * tvp7002_write_err() - Write a register value with error code
 528  * @sd: pointer to standard V4L2 sub-device structure
 529  * @reg: destination register
 530  * @val: value to be written
 531  * @err: pointer to error value
 532  *
 533  * Write a value in a register and save error value in pointer.
 534  * Also update the register table if successful
 535  */
 536 static inline void tvp7002_write_err(struct v4l2_subdev *sd, u8 reg,
 537                                                         u8 val, int *err)
 538 {
 539         if (!*err)
 540                 *err = tvp7002_write(sd, reg, val);
 541 }
 542
 543 /*
 544  * tvp7002_g_chip_ident() - Get chip identification number
 545  * @sd: ptr to v4l2_subdev struct
 546  * @chip: ptr to v4l2_dbg_chip_ident struct
 547  *
 548  * Obtains the chip's identification number.
 549  * Returns zero or -EINVAL if read operation fails.
 550  */
 551 static int tvp7002_g_chip_ident(struct v4l2_subdev *sd,
 552                                         struct v4l2_dbg_chip_ident *chip)
 553 {
 554         u8 rev;
 555         int error;
 556         struct i2c_client *client = v4l2_get_subdevdata(sd);
 557
 558         error = tvp7002_read(sd, TVP7002_CHIP_REV, &rev);
 559
 560         if (error < 0)
 561                 return error;
 562
 563         return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_TVP7002, rev);
 564 }
 565
 566 /*
 567  * tvp7002_write_inittab() - Write initialization values
 568  * @sd: ptr to v4l2_subdev struct
 569  * @regs: ptr to i2c_reg_value struct
 570  *
 571  * Write initialization values.
 572  * Returns zero or -EINVAL if read operation fails.
 573  */
 574 static int tvp7002_write_inittab(struct v4l2_subdev *sd,
 575                                         const struct i2c_reg_value *regs)
 576 {
 577         int error = 0;
 578
 579         /* Initialize the first (defined) registers */
 580         while (TVP7002_EOR != regs->reg) {
 581                 if (TVP7002_WRITE == regs->type)
 582                         tvp7002_write_err(sd, regs->reg, regs->value, &error);
 583                 regs++;
 584         }
 585
 586         return error;
 587 }
 588
 589 /*
 590  * tvp7002_s_dv_preset() - Set digital video preset
 591  * @sd: ptr to v4l2_subdev struct
 592  * @dv_preset: ptr to v4l2_dv_preset struct
 593  *
 594  * Set the digital video preset for a TVP7002 decoder device.
 595  * Returns zero when successful or -EINVAL if register access fails.
 596  */
 597 static int tvp7002_s_dv_preset(struct v4l2_subdev *sd,
 598                                         struct v4l2_dv_preset *dv_preset)
 599 {
 600         struct tvp7002 *device = to_tvp7002(sd);
 601         u32 preset;
 602         int i;
 603
 604         for (i = 0; i < NUM_PRESETS; i++) {
 605                 preset = tvp7002_presets[i].preset;
 606                 if (preset == dv_preset->preset) {
 607                         device->current_preset = &tvp7002_presets[i];
 608                         return tvp7002_write_inittab(sd, tvp7002_presets[i].p_settings);
 609                 }
 610         }
 611
 612         return -EINVAL;
 613 }
 614
 615 /*
 616  * tvp7002_s_ctrl() - Set a control
 617  * @ctrl: ptr to v4l2_ctrl struct
 618  *
 619  * Set a control in TVP7002 decoder device.
 620  * Returns zero when successful or -EINVAL if register access fails.
 621  */
 622 static int tvp7002_s_ctrl(struct v4l2_ctrl *ctrl)
 623 {
 624         struct v4l2_subdev *sd = to_sd(ctrl);
 625         int error = 0;
 626
 627         switch (ctrl->id) {
 628         case V4L2_CID_GAIN:
 629                 tvp7002_write_err(sd, TVP7002_R_FINE_GAIN, ctrl->val, &error);
 630                 tvp7002_write_err(sd, TVP7002_G_FINE_GAIN, ctrl->val, &error);
 631                 tvp7002_write_err(sd, TVP7002_B_FINE_GAIN, ctrl->val, &error);
 632                 return error;
 633         }
 634         return -EINVAL;
 635 }
 636
 637 /*
 638  * tvp7002_mbus_fmt() - V4L2 decoder interface handler for try/s/g_mbus_fmt
 639  * @sd: pointer to standard V4L2 sub-device structure
 640  * @f: pointer to mediabus format structure
 641  *
 642  * Negotiate the image capture size and mediabus format.
 643  * There is only one possible format, so this single function works for
 644  * get, set and try.
 645  */
 646 static int tvp7002_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *f)
 647 {
 648         struct tvp7002 *device = to_tvp7002(sd);
 649         struct v4l2_dv_enum_preset e_preset;
 650         int error;
 651
 652         /* Calculate height and width based on current standard */
 653         error = v4l_fill_dv_preset_info(device->current_preset->preset, &e_preset);
 654         if (error)
 655                 return error;
 656
 657         f->width = e_preset.width;
 658         f->height = e_preset.height;
 659         f->code = V4L2_MBUS_FMT_YUYV10_1X20;
 660         f->field = device->current_preset->scanmode;
 661         f->colorspace = device->current_preset->color_space;
 662
 663         v4l2_dbg(1, debug, sd, "MBUS_FMT: Width - %d, Height - %d",
 664                         f->width, f->height);
 665         return 0;
 666 }
 667
 668 /*
 669  * tvp7002_query_dv_preset() - query DV preset
 670  * @sd: pointer to standard V4L2 sub-device structure
 671  * @qpreset: standard V4L2 v4l2_dv_preset structure
 672  *
 673  * Returns the current DV preset by TVP7002. If no active input is
 674  * detected, returns -EINVAL
 675  */
 676 static int tvp7002_query_dv_preset(struct v4l2_subdev *sd,
 677                                                 struct v4l2_dv_preset *qpreset)
 678 {
 679         const struct tvp7002_preset_definition *presets = tvp7002_presets;
 680         struct tvp7002 *device;
 681         u8 progressive;
 682         u32 lpfr;
 683         u32 cpln;
 684         int error = 0;
 685         u8 lpf_lsb;
 686         u8 lpf_msb;
 687         u8 cpl_lsb;
 688         u8 cpl_msb;
 689         int index;
 690
 691         device = to_tvp7002(sd);
 692
 693         /* Read standards from device registers */
 694         tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_LSBS, &lpf_lsb, &error);
 695         tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_MSBS, &lpf_msb, &error);
 696
 697         if (error < 0)
 698                 return error;
 699
 700         tvp7002_read_err(sd, TVP7002_CLK_L_STAT_LSBS, &cpl_lsb, &error);
 701         tvp7002_read_err(sd, TVP7002_CLK_L_STAT_MSBS, &cpl_msb, &error);
 702
 703         if (error < 0)
 704                 return error;
 705
 706         /* Get lines per frame, clocks per line and interlaced/progresive */
 707         lpfr = lpf_lsb | ((TVP7002_CL_MASK & lpf_msb) << TVP7002_CL_SHIFT);
 708         cpln = cpl_lsb | ((TVP7002_CL_MASK & cpl_msb) << TVP7002_CL_SHIFT);
 709         progressive = (lpf_msb & TVP7002_INPR_MASK) >> TVP7002_IP_SHIFT;
 710
 711         /* Do checking of video modes */
 712         for (index = 0; index < NUM_PRESETS; index++, presets++)
 713                 if (lpfr  == presets->lines_per_frame &&
 714                         progressive == presets->progressive) {
 715                         if (presets->cpl_min == 0xffff)
 716                                 break;
 717                         if (cpln >= presets->cpl_min && cpln <= presets->cpl_max)
 718                                 break;
 719                 }
 720
 721         if (index == NUM_PRESETS) {
 722                 v4l2_dbg(1, debug, sd, "detection failed: lpf = %x, cpl = %x\n",
 723                                                                 lpfr, cpln);
 724                 /* Could not detect a signal, so return the 'invalid' preset */
 725                 qpreset->preset = V4L2_DV_INVALID;
 726                 return 0;
 727         }
 728
 729         /* Set values in found preset */
 730         qpreset->preset = presets->preset;
 731
 732         /* Update lines per frame and clocks per line info */
 733         v4l2_dbg(1, debug, sd, "detected preset: %d\n", presets->preset);
 734         return 0;
 735 }
 736
 737 #ifdef CONFIG_VIDEO_ADV_DEBUG
 738 /*
 739  * tvp7002_g_register() - Get the value of a register
 740  * @sd: ptr to v4l2_subdev struct
 741  * @reg: ptr to v4l2_dbg_register struct
 742  *
 743  * Get the value of a TVP7002 decoder device register.
 744  * Returns zero when successful, -EINVAL if register read fails or
 745  * access to I2C client fails, -EPERM if the call is not allowed
 746  * by disabled CAP_SYS_ADMIN.
 747  */
 748 static int tvp7002_g_register(struct v4l2_subdev *sd,
 749                                                 struct v4l2_dbg_register *reg)
 750 {
 751         struct i2c_client *client = v4l2_get_subdevdata(sd);
 752         u8 val;
 753         int ret;
 754
 755         if (!v4l2_chip_match_i2c_client(client, &reg->match))
 756                 return -EINVAL;
 757         if (!capable(CAP_SYS_ADMIN))
 758                 return -EPERM;
 759
 760         ret = tvp7002_read(sd, reg->reg & 0xff, &val);
 761         reg->val = val;
 762         return ret;
 763 }
 764
 765 /*
 766  * tvp7002_s_register() - set a control
 767  * @sd: ptr to v4l2_subdev struct
 768  * @reg: ptr to v4l2_dbg_register struct
 769  *
 770  * Get the value of a TVP7002 decoder device register.
 771  * Returns zero when successful, -EINVAL if register read fails or
 772  * -EPERM if call not allowed.
 773  */
 774 static int tvp7002_s_register(struct v4l2_subdev *sd,
 775                                                 struct v4l2_dbg_register *reg)
 776 {
 777         struct i2c_client *client = v4l2_get_subdevdata(sd);
 778
 779         if (!v4l2_chip_match_i2c_client(client, &reg->match))
 780                 return -EINVAL;
 781         if (!capable(CAP_SYS_ADMIN))
 782                 return -EPERM;
 783
 784         return tvp7002_write(sd, reg->reg & 0xff, reg->val & 0xff);
 785 }
 786 #endif
 787
 788 /*
 789  * tvp7002_enum_mbus_fmt() - Enum supported mediabus formats
 790  * @sd: pointer to standard V4L2 sub-device structure
 791  * @index: format index
 792  * @code: pointer to mediabus format
 793  *
 794  * Enumerate supported mediabus formats.
 795  */
 796
 797 static int tvp7002_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned index,
 798                                         enum v4l2_mbus_pixelcode *code)
 799 {
 800         /* Check requested format index is within range */
 801         if (index)
 802                 return -EINVAL;
 803         *code = V4L2_MBUS_FMT_YUYV10_1X20;
 804         return 0;
 805 }
 806
 807 /*
 808  * tvp7002_s_stream() - V4L2 decoder i/f handler for s_stream
 809  * @sd: pointer to standard V4L2 sub-device structure
 810  * @enable: streaming enable or disable
 811  *
 812  * Sets streaming to enable or disable, if possible.
 813  */
 814 static int tvp7002_s_stream(struct v4l2_subdev *sd, int enable)
 815 {
 816         struct tvp7002 *device = to_tvp7002(sd);
 817         int error = 0;
 818
 819         if (device->streaming == enable)
 820                 return 0;
 821
 822         if (enable) {
 823                 /* Set output state on (low impedance means stream on) */
 824                 error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x00);
 825                 device->streaming = enable;
 826         } else {
 827                 /* Set output state off (high impedance means stream off) */
 828                 error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x03);
 829                 if (error)
 830                         v4l2_dbg(1, debug, sd, "Unable to stop streaming\n");
 831
 832                 device->streaming = enable;
 833         }
 834
 835         return error;
 836 }
 837
 838 /*
 839  * tvp7002_log_status() - Print information about register settings
 840  * @sd: ptr to v4l2_subdev struct
 841  *
 842  * Log register values of a TVP7002 decoder device.
 843  * Returns zero or -EINVAL if read operation fails.
 844  */
 845 static int tvp7002_log_status(struct v4l2_subdev *sd)
 846 {
 847         const struct tvp7002_preset_definition *presets = tvp7002_presets;
 848         struct tvp7002 *device = to_tvp7002(sd);
 849         struct v4l2_dv_enum_preset e_preset;
 850         struct v4l2_dv_preset detected;
 851         int i;
 852
 853         detected.preset = V4L2_DV_INVALID;
 854         /* Find my current standard*/
 855         tvp7002_query_dv_preset(sd, &detected);
 856
 857         /* Print standard related code values */
 858         for (i = 0; i < NUM_PRESETS; i++, presets++)
 859                 if (presets->preset == detected.preset)
 860                         break;
 861
 862         if (v4l_fill_dv_preset_info(device->current_preset->preset, &e_preset))
 863                 return -EINVAL;
 864
 865         v4l2_info(sd, "Selected DV Preset: %s\n", e_preset.name);
 866         v4l2_info(sd, "   Pixels per line: %u\n", e_preset.width);
 867         v4l2_info(sd, "   Lines per frame: %u\n\n", e_preset.height);
 868         if (i == NUM_PRESETS) {
 869                 v4l2_info(sd, "Detected DV Preset: None\n");
 870         } else {
 871                 if (v4l_fill_dv_preset_info(presets->preset, &e_preset))
 872                         return -EINVAL;
 873                 v4l2_info(sd, "Detected DV Preset: %s\n", e_preset.name);
 874                 v4l2_info(sd, "  Pixels per line: %u\n", e_preset.width);
 875                 v4l2_info(sd, "  Lines per frame: %u\n\n", e_preset.height);
 876         }
 877         v4l2_info(sd, "Streaming enabled: %s\n",
 878                                         device->streaming ? "yes" : "no");
 879
 880         /* Print the current value of the gain control */
 881         v4l2_ctrl_handler_log_status(&device->hdl, sd->name);
 882
 883         return 0;
 884 }
 885
 886 /*
 887  * tvp7002_enum_dv_presets() - Enum supported digital video formats
 888  * @sd: pointer to standard V4L2 sub-device structure
 889  * @preset: pointer to format struct
 890  *
 891  * Enumerate supported digital video formats.
 892  */
 893 static int tvp7002_enum_dv_presets(struct v4l2_subdev *sd,
 894                 struct v4l2_dv_enum_preset *preset)
 895 {
 896         /* Check requested format index is within range */
 897         if (preset->index >= NUM_PRESETS)
 898                 return -EINVAL;
 899
 900         return v4l_fill_dv_preset_info(tvp7002_presets[preset->index].preset, preset);
 901 }
 902
 903 static const struct v4l2_ctrl_ops tvp7002_ctrl_ops = {
 904         .s_ctrl = tvp7002_s_ctrl,
 905 };
 906
 907 /* V4L2 core operation handlers */
 908 static const struct v4l2_subdev_core_ops tvp7002_core_ops = {
 909         .g_chip_ident = tvp7002_g_chip_ident,
 910         .log_status = tvp7002_log_status,
 911         .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 912         .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 913         .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
 914         .g_ctrl = v4l2_subdev_g_ctrl,
 915         .s_ctrl = v4l2_subdev_s_ctrl,
 916         .queryctrl = v4l2_subdev_queryctrl,
 917         .querymenu = v4l2_subdev_querymenu,
 918 #ifdef CONFIG_VIDEO_ADV_DEBUG
 919         .g_register = tvp7002_g_register,
 920         .s_register = tvp7002_s_register,
 921 #endif
 922 };
 923
 924 /* Specific video subsystem operation handlers */
 925 static const struct v4l2_subdev_video_ops tvp7002_video_ops = {
 926         .enum_dv_presets = tvp7002_enum_dv_presets,
 927         .s_dv_preset = tvp7002_s_dv_preset,
 928         .query_dv_preset = tvp7002_query_dv_preset,
 929         .s_stream = tvp7002_s_stream,
 930         .g_mbus_fmt = tvp7002_mbus_fmt,
 931         .try_mbus_fmt = tvp7002_mbus_fmt,
 932         .s_mbus_fmt = tvp7002_mbus_fmt,
 933         .enum_mbus_fmt = tvp7002_enum_mbus_fmt,
 934 };
 935
 936 /* V4L2 top level operation handlers */
 937 static const struct v4l2_subdev_ops tvp7002_ops = {
 938         .core = &tvp7002_core_ops,
 939         .video = &tvp7002_video_ops,
 940 };
 941
 942 /*
 943  * tvp7002_probe - Probe a TVP7002 device
 944  * @c: ptr to i2c_client struct
 945  * @id: ptr to i2c_device_id struct
 946  *
 947  * Initialize the TVP7002 device
 948  * Returns zero when successful, -EINVAL if register read fails or
 949  * -EIO if i2c access is not available.
 950  */
 951 static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
 952 {
 953         struct v4l2_subdev *sd;
 954         struct tvp7002 *device;
 955         struct v4l2_dv_preset preset;
 956         int polarity_a;
 957         int polarity_b;
 958         u8 revision;
 959
 960         int error;
 961
 962         /* Check if the adapter supports the needed features */
 963         if (!i2c_check_functionality(c->adapter,
 964                 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
 965                 return -EIO;
 966
 967         if (!c->dev.platform_data) {
 968                 v4l_err(c, "No platform data!!\n");
 969                 return -ENODEV;
 970         }
 971
 972         device = kzalloc(sizeof(struct tvp7002), GFP_KERNEL);
 973
 974         if (!device)
 975                 return -ENOMEM;
 976
 977         sd = &device->sd;
 978         device->pdata = c->dev.platform_data;
 979         device->current_preset = tvp7002_presets;
 980
 981         /* Tell v4l2 the device is ready */
 982         v4l2_i2c_subdev_init(sd, c, &tvp7002_ops);
 983         v4l_info(c, "tvp7002 found @ 0x%02x (%s)\n",
 984                                         c->addr, c->adapter->name);
 985
 986         error = tvp7002_read(sd, TVP7002_CHIP_REV, &revision);
 987         if (error < 0)
 988                 goto found_error;
 989
 990         /* Get revision number */
 991         v4l2_info(sd, "Rev. %02x detected.\n", revision);
 992         if (revision != 0x02)
 993                 v4l2_info(sd, "Unknown revision detected.\n");
 994
 995         /* Initializes TVP7002 to its default values */
 996         error = tvp7002_write_inittab(sd, tvp7002_init_default);
 997
 998         if (error < 0)
 999                 goto found_error;
1000
1001         /* Set polarity information after registers have been set */
1002         polarity_a = 0x20 | device->pdata->hs_polarity << 5
1003                         | device->pdata->vs_polarity << 2;
1004         error = tvp7002_write(sd, TVP7002_SYNC_CTL_1, polarity_a);
1005         if (error < 0)
1006                 goto found_error;
1007
1008         polarity_b = 0x01  | device->pdata->fid_polarity << 2
1009                         | device->pdata->sog_polarity << 1
1010                         | device->pdata->clk_polarity;
1011         error = tvp7002_write(sd, TVP7002_MISC_CTL_3, polarity_b);
1012         if (error < 0)
1013                 goto found_error;
1014
1015         /* Set registers according to default video mode */
1016         preset.preset = device->current_preset->preset;
1017         error = tvp7002_s_dv_preset(sd, &preset);
1018
1019         v4l2_ctrl_handler_init(&device->hdl, 1);
1020         v4l2_ctrl_new_std(&device->hdl, &tvp7002_ctrl_ops,
1021                         V4L2_CID_GAIN, 0, 255, 1, 0);
1022         sd->ctrl_handler = &device->hdl;
1023         if (device->hdl.error) {
1024                 int err = device->hdl.error;
1025
1026                 v4l2_ctrl_handler_free(&device->hdl);
1027                 kfree(device);
1028                 return err;
1029         }
1030         v4l2_ctrl_handler_setup(&device->hdl);
1031
1032 found_error:
1033         if (error < 0)
1034                 kfree(device);
1035
1036         return error;
1037 }
1038
1039 /*
1040  * tvp7002_remove - Remove TVP7002 device support
1041  * @c: ptr to i2c_client struct
1042  *
1043  * Reset the TVP7002 device
1044  * Returns zero.
1045  */
1046 static int tvp7002_remove(struct i2c_client *c)
1047 {
1048         struct v4l2_subdev *sd = i2c_get_clientdata(c);
1049         struct tvp7002 *device = to_tvp7002(sd);
1050
1051         v4l2_dbg(1, debug, sd, "Removing tvp7002 adapter"
1052                                 "on address 0x%x\n", c->addr);
1053
1054         v4l2_device_unregister_subdev(sd);
1055         v4l2_ctrl_handler_free(&device->hdl);
1056         kfree(device);
1057         return 0;
1058 }
1059
1060 /* I2C Device ID table */
1061 static const struct i2c_device_id tvp7002_id[] = {
1062         { "tvp7002", 0 },
1063         { }
1064 };
1065 MODULE_DEVICE_TABLE(i2c, tvp7002_id);
1066
1067 /* I2C driver data */
1068 static struct i2c_driver tvp7002_driver = {
1069         .driver = {
1070                 .owner = THIS_MODULE,
1071                 .name = TVP7002_MODULE_NAME,
1072         },
1073         .probe = tvp7002_probe,
1074         .remove = tvp7002_remove,
1075         .id_table = tvp7002_id,
1076 };
1077
1078 /*
1079  * tvp7002_init - Initialize driver via I2C interface
1080  *
1081  * Register the TVP7002 driver.
1082  * Return 0 on success or error code on failure.
1083  */
1084 static int __init tvp7002_init(void)
1085 {
1086         return i2c_add_driver(&tvp7002_driver);
1087 }
1088
1089 /*
1090  * tvp7002_exit - Remove driver via I2C interface
1091  *
1092  * Unregister the TVP7002 driver.
1093  * Returns nothing.
1094  */
1095 static void __exit tvp7002_exit(void)
1096 {
1097         i2c_del_driver(&tvp7002_driver);
1098 }
1099
1100 module_init(tvp7002_init);
1101 module_exit(tvp7002_exit);