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 <media/tvp7002.h>
  32 #include <media/v4l2-device.h>
  33 #include <media/v4l2-chip-ident.h>
  34 #include <media/v4l2-common.h>
  35 #include <media/v4l2-ctrls.h>
  36 #include "tvp7002_reg.h"
  37
  38 MODULE_DESCRIPTION("TI TVP7002 Video and Graphics Digitizer driver");
  39 MODULE_AUTHOR("Santiago Nunez-Corrales <santiago.nunez@ridgerun.com>");
  40 MODULE_LICENSE("GPL");
  41
  42 /* Module Name */
  43 #define TVP7002_MODULE_NAME     "tvp7002"
  44
  45 /* I2C retry attempts */
  46 #define I2C_RETRY_COUNT         (5)
  47
  48 /* End of registers */
  49 #define TVP7002_EOR             0x5c
  50
  51 /* Read write definition for registers */
  52 #define TVP7002_READ            0
  53 #define TVP7002_WRITE           1
  54 #define TVP7002_RESERVED        2
  55
  56 /* Interlaced vs progressive mask and shift */
  57 #define TVP7002_IP_SHIFT        5
  58 #define TVP7002_INPR_MASK       (0x01 << TVP7002_IP_SHIFT)
  59
  60 /* Shift for CPL and LPF registers */
  61 #define TVP7002_CL_SHIFT        8
  62 #define TVP7002_CL_MASK         0x0f
  63
  64 /* Debug functions */
  65 static int debug;
  66 module_param(debug, bool, 0644);
  67 MODULE_PARM_DESC(debug, "Debug level (0-2)");
  68
  69 /* Structure for register values */
  70 struct i2c_reg_value {
  71         u8 reg;
  72         u8 value;
  73         u8 type;
  74 };
  75
  76 /*
  77  * Register default values (according to tvp7002 datasheet)
  78  * In the case of read-only registers, the value (0xff) is
  79  * never written. R/W functionality is controlled by the
  80  * writable bit in the register struct definition.
  81  */
  82 static const struct i2c_reg_value tvp7002_init_default[] = {
  83         { TVP7002_CHIP_REV, 0xff, TVP7002_READ },
  84         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
  85         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
  86         { TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
  87         { TVP7002_HPLL_PHASE_SEL, 0x80, TVP7002_WRITE },
  88         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
  89         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
  90         { TVP7002_HSYNC_OUT_W, 0x60, TVP7002_WRITE },
  91         { TVP7002_B_FINE_GAIN, 0x00, TVP7002_WRITE },
  92         { TVP7002_G_FINE_GAIN, 0x00, TVP7002_WRITE },
  93         { TVP7002_R_FINE_GAIN, 0x00, TVP7002_WRITE },
  94         { TVP7002_B_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  95         { TVP7002_G_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  96         { TVP7002_R_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  97         { TVP7002_SYNC_CTL_1, 0x20, TVP7002_WRITE },
  98         { TVP7002_HPLL_AND_CLAMP_CTL, 0x2e, TVP7002_WRITE },
  99         { TVP7002_SYNC_ON_G_THRS, 0x5d, TVP7002_WRITE },
 100         { TVP7002_SYNC_SEPARATOR_THRS, 0x47, TVP7002_WRITE },
 101         { TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
 102         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 103         { TVP7002_SYNC_DETECT_STAT, 0xff, TVP7002_READ },
 104         { TVP7002_OUT_FORMATTER, 0x47, TVP7002_WRITE },
 105         { TVP7002_MISC_CTL_1, 0x01, TVP7002_WRITE },
 106         { TVP7002_MISC_CTL_2, 0x00, TVP7002_WRITE },
 107         { TVP7002_MISC_CTL_3, 0x01, TVP7002_WRITE },
 108         { TVP7002_IN_MUX_SEL_1, 0x00, TVP7002_WRITE },
 109         { TVP7002_IN_MUX_SEL_2, 0x67, TVP7002_WRITE },
 110         { TVP7002_B_AND_G_COARSE_GAIN, 0x77, TVP7002_WRITE },
 111         { TVP7002_R_COARSE_GAIN, 0x07, TVP7002_WRITE },
 112         { TVP7002_FINE_OFF_LSBS, 0x00, TVP7002_WRITE },
 113         { TVP7002_B_COARSE_OFF, 0x10, TVP7002_WRITE },
 114         { TVP7002_G_COARSE_OFF, 0x10, TVP7002_WRITE },
 115         { TVP7002_R_COARSE_OFF, 0x10, TVP7002_WRITE },
 116         { TVP7002_HSOUT_OUT_START, 0x08, TVP7002_WRITE },
 117         { TVP7002_MISC_CTL_4, 0x00, TVP7002_WRITE },
 118         { TVP7002_B_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 119         { TVP7002_G_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 120         { TVP7002_R_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 121         { TVP7002_AUTO_LVL_CTL_ENABLE, 0x80, TVP7002_WRITE },
 122         { TVP7002_DGTL_ALC_OUT_MSBS, 0xff, TVP7002_READ },
 123         { TVP7002_AUTO_LVL_CTL_FILTER, 0x53, TVP7002_WRITE },
 124         { 0x29, 0x08, TVP7002_RESERVED },
 125         { TVP7002_FINE_CLAMP_CTL, 0x07, TVP7002_WRITE },
 126         /* PWR_CTL is controlled only by the probe and reset functions */
 127         { TVP7002_PWR_CTL, 0x00, TVP7002_RESERVED },
 128         { TVP7002_ADC_SETUP, 0x50, TVP7002_WRITE },
 129         { TVP7002_COARSE_CLAMP_CTL, 0x00, TVP7002_WRITE },
 130         { TVP7002_SOG_CLAMP, 0x80, TVP7002_WRITE },
 131         { TVP7002_RGB_COARSE_CLAMP_CTL, 0x8c, TVP7002_WRITE },
 132         { TVP7002_SOG_COARSE_CLAMP_CTL, 0x04, TVP7002_WRITE },
 133         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 134         { 0x32, 0x18, TVP7002_RESERVED },
 135         { 0x33, 0x60, TVP7002_RESERVED },
 136         { TVP7002_MVIS_STRIPPER_W, 0xff, TVP7002_RESERVED },
 137         { TVP7002_VSYNC_ALGN, 0x10, TVP7002_WRITE },
 138         { TVP7002_SYNC_BYPASS, 0x00, TVP7002_WRITE },
 139         { TVP7002_L_FRAME_STAT_LSBS, 0xff, TVP7002_READ },
 140         { TVP7002_L_FRAME_STAT_MSBS, 0xff, TVP7002_READ },
 141         { TVP7002_CLK_L_STAT_LSBS, 0xff, TVP7002_READ },
 142         { TVP7002_CLK_L_STAT_MSBS, 0xff, TVP7002_READ },
 143         { TVP7002_HSYNC_W, 0xff, TVP7002_READ },
 144         { TVP7002_VSYNC_W, 0xff, TVP7002_READ },
 145         { TVP7002_L_LENGTH_TOL, 0x03, TVP7002_WRITE },
 146         { 0x3e, 0x60, TVP7002_RESERVED },
 147         { TVP7002_VIDEO_BWTH_CTL, 0x01, TVP7002_WRITE },
 148         { TVP7002_AVID_START_PIXEL_LSBS, 0x01, TVP7002_WRITE },
 149         { TVP7002_AVID_START_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
 150         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 151         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
 152         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 153         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 154         { TVP7002_VBLK_F_0_DURATION, 0x1e, TVP7002_WRITE },
 155         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 156         { TVP7002_FBIT_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
 157         { TVP7002_FBIT_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 158         { TVP7002_YUV_Y_G_COEF_LSBS, 0xe3, TVP7002_WRITE },
 159         { TVP7002_YUV_Y_G_COEF_MSBS, 0x16, TVP7002_WRITE },
 160         { TVP7002_YUV_Y_B_COEF_LSBS, 0x4f, TVP7002_WRITE },
 161         { TVP7002_YUV_Y_B_COEF_MSBS, 0x02, TVP7002_WRITE },
 162         { TVP7002_YUV_Y_R_COEF_LSBS, 0xce, TVP7002_WRITE },
 163         { TVP7002_YUV_Y_R_COEF_MSBS, 0x06, TVP7002_WRITE },
 164         { TVP7002_YUV_U_G_COEF_LSBS, 0xab, TVP7002_WRITE },
 165         { TVP7002_YUV_U_G_COEF_MSBS, 0xf3, TVP7002_WRITE },
 166         { TVP7002_YUV_U_B_COEF_LSBS, 0x00, TVP7002_WRITE },
 167         { TVP7002_YUV_U_B_COEF_MSBS, 0x10, TVP7002_WRITE },
 168         { TVP7002_YUV_U_R_COEF_LSBS, 0x55, TVP7002_WRITE },
 169         { TVP7002_YUV_U_R_COEF_MSBS, 0xfc, TVP7002_WRITE },
 170         { TVP7002_YUV_V_G_COEF_LSBS, 0x78, TVP7002_WRITE },
 171         { TVP7002_YUV_V_G_COEF_MSBS, 0xf1, TVP7002_WRITE },
 172         { TVP7002_YUV_V_B_COEF_LSBS, 0x88, TVP7002_WRITE },
 173         { TVP7002_YUV_V_B_COEF_MSBS, 0xfe, TVP7002_WRITE },
 174         { TVP7002_YUV_V_R_COEF_LSBS, 0x00, TVP7002_WRITE },
 175         { TVP7002_YUV_V_R_COEF_MSBS, 0x10, TVP7002_WRITE },
 176         /* This signals end of register values */
 177         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 178 };
 179
 180 /* Register parameters for 480P */
 181 static const struct i2c_reg_value tvp7002_parms_480P[] = {
 182         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x35, TVP7002_WRITE },
 183         { TVP7002_HPLL_FDBK_DIV_LSBS, 0xa0, TVP7002_WRITE },
 184         { TVP7002_HPLL_CRTL, 0x02, TVP7002_WRITE },
 185         { TVP7002_AVID_START_PIXEL_LSBS, 0x91, TVP7002_WRITE },
 186         { TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 187         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x0B, TVP7002_WRITE },
 188         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 189         { TVP7002_VBLK_F_0_START_L_OFF, 0x03, TVP7002_WRITE },
 190         { TVP7002_VBLK_F_1_START_L_OFF, 0x01, TVP7002_WRITE },
 191         { TVP7002_VBLK_F_0_DURATION, 0x13, TVP7002_WRITE },
 192         { TVP7002_VBLK_F_1_DURATION, 0x13, TVP7002_WRITE },
 193         { TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
 194         { TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
 195         { TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
 196         { TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
 197         { TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
 198         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 199 };
 200
 201 /* Register parameters for 576P */
 202 static const struct i2c_reg_value tvp7002_parms_576P[] = {
 203         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x36, TVP7002_WRITE },
 204         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
 205         { TVP7002_HPLL_CRTL, 0x18, TVP7002_WRITE },
 206         { TVP7002_AVID_START_PIXEL_LSBS, 0x9B, TVP7002_WRITE },
 207         { TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 208         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x0F, TVP7002_WRITE },
 209         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 210         { TVP7002_VBLK_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
 211         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 212         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 213         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 214         { TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
 215         { TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
 216         { TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
 217         { TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
 218         { TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
 219         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 220 };
 221
 222 /* Register parameters for 1080I60 */
 223 static const struct i2c_reg_value tvp7002_parms_1080I60[] = {
 224         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
 225         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
 226         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 227         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 228         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 229         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 230         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 231         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 232         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 233         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 234         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 235         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 236         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 237         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 238         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 239         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 240         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 241 };
 242
 243 /* Register parameters for 1080P60 */
 244 static const struct i2c_reg_value tvp7002_parms_1080P60[] = {
 245         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
 246         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
 247         { TVP7002_HPLL_CRTL, 0xE0, TVP7002_WRITE },
 248         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 249         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 250         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 251         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 252         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 253         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 254         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 255         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 256         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 257         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 258         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 259         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 260         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 261         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 262 };
 263
 264 /* Register parameters for 1080I50 */
 265 static const struct i2c_reg_value tvp7002_parms_1080I50[] = {
 266         { TVP7002_HPLL_FDBK_DIV_MSBS, 0xa5, TVP7002_WRITE },
 267         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
 268         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 269         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 270         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 271         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 272         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 273         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 274         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 275         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 276         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 277         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 278         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 279         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 280         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 281         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 282         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 283 };
 284
 285 /* Register parameters for 720P60 */
 286 static const struct i2c_reg_value tvp7002_parms_720P60[] = {
 287         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
 288         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
 289         { TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
 290         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
 291         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 292         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
 293         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
 294         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 295         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 296         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 297         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 298         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 299         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 300         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 301         { TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
 302         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 303         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 304 };
 305
 306 /* Register parameters for 720P50 */
 307 static const struct i2c_reg_value tvp7002_parms_720P50[] = {
 308         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x7b, TVP7002_WRITE },
 309         { TVP7002_HPLL_FDBK_DIV_LSBS, 0xc0, TVP7002_WRITE },
 310         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 311         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
 312         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 313         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
 314         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
 315         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 316         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 317         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 318         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 319         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 320         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 321         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 322         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 323         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 324         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 325 };
 326
 327 /* Preset definition for handling device operation */
 328 struct tvp7002_preset_definition {
 329         u32 preset;
 330         const struct i2c_reg_value *p_settings;
 331         enum v4l2_colorspace color_space;
 332         enum v4l2_field scanmode;
 333         u16 progressive;
 334         u16 lines_per_frame;
 335         u16 cpl_min;
 336         u16 cpl_max;
 337 };
 338
 339 /* Struct list for digital video presets */
 340 static const struct tvp7002_preset_definition tvp7002_presets[] = {
 341         {
 342                 V4L2_DV_720P60,
 343                 tvp7002_parms_720P60,
 344                 V4L2_COLORSPACE_REC709,
 345                 V4L2_FIELD_NONE,
 346                 1,
 347                 0x2EE,
 348                 135,
 349                 153
 350         },
 351         {
 352                 V4L2_DV_1080I60,
 353                 tvp7002_parms_1080I60,
 354                 V4L2_COLORSPACE_REC709,
 355                 V4L2_FIELD_INTERLACED,
 356                 0,
 357                 0x465,
 358                 181,
 359                 205
 360         },
 361         {
 362                 V4L2_DV_1080I50,
 363                 tvp7002_parms_1080I50,
 364                 V4L2_COLORSPACE_REC709,
 365                 V4L2_FIELD_INTERLACED,
 366                 0,
 367                 0x465,
 368                 217,
 369                 245
 370         },
 371         {
 372                 V4L2_DV_720P50,
 373                 tvp7002_parms_720P50,
 374                 V4L2_COLORSPACE_REC709,
 375                 V4L2_FIELD_NONE,
 376                 1,
 377                 0x2EE,
 378                 163,
 379                 183
 380         },
 381         {
 382                 V4L2_DV_1080P60,
 383                 tvp7002_parms_1080P60,
 384                 V4L2_COLORSPACE_REC709,
 385                 V4L2_FIELD_NONE,
 386                 1,
 387                 0x465,
 388                 90,
 389                 102
 390         },
 391         {
 392                 V4L2_DV_480P59_94,
 393                 tvp7002_parms_480P,
 394                 V4L2_COLORSPACE_SMPTE170M,
 395                 V4L2_FIELD_NONE,
 396                 1,
 397                 0x20D,
 398                 0xffff,
 399                 0xffff
 400         },
 401         {
 402                 V4L2_DV_576P50,
 403                 tvp7002_parms_576P,
 404                 V4L2_COLORSPACE_SMPTE170M,
 405                 V4L2_FIELD_NONE,
 406                 1,
 407                 0x271,
 408                 0xffff,
 409                 0xffff
 410         }
 411 };
 412
 413 #define NUM_PRESETS     ARRAY_SIZE(tvp7002_presets)
 414
 415 /* Device definition */
 416 struct tvp7002 {
 417         struct v4l2_subdev sd;
 418         struct v4l2_ctrl_handler hdl;
 419         const struct tvp7002_config *pdata;
 420
 421         int ver;
 422         int streaming;
 423
 424         const struct tvp7002_preset_definition *current_preset;
 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_g_chip_ident() - Get chip identification number
 537  * @sd: ptr to v4l2_subdev struct
 538  * @chip: ptr to v4l2_dbg_chip_ident struct
 539  *
 540  * Obtains the chip's identification number.
 541  * Returns zero or -EINVAL if read operation fails.
 542  */
 543 static int tvp7002_g_chip_ident(struct v4l2_subdev *sd,
 544                                         struct v4l2_dbg_chip_ident *chip)
 545 {
 546         u8 rev;
 547         int error;
 548         struct i2c_client *client = v4l2_get_subdevdata(sd);
 549
 550         error = tvp7002_read(sd, TVP7002_CHIP_REV, &rev);
 551
 552         if (error < 0)
 553                 return error;
 554
 555         return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_TVP7002, rev);
 556 }
 557
 558 /*
 559  * tvp7002_write_inittab() - Write initialization values
 560  * @sd: ptr to v4l2_subdev struct
 561  * @regs: ptr to i2c_reg_value struct
 562  *
 563  * Write initialization values.
 564  * Returns zero or -EINVAL if read operation fails.
 565  */
 566 static int tvp7002_write_inittab(struct v4l2_subdev *sd,
 567                                         const struct i2c_reg_value *regs)
 568 {
 569         int error = 0;
 570
 571         /* Initialize the first (defined) registers */
 572         while (TVP7002_EOR != regs->reg) {
 573                 if (TVP7002_WRITE == regs->type)
 574                         tvp7002_write_err(sd, regs->reg, regs->value, &error);
 575                 regs++;
 576         }
 577
 578         return error;
 579 }
 580
 581 /*
 582  * tvp7002_s_dv_preset() - Set digital video preset
 583  * @sd: ptr to v4l2_subdev struct
 584  * @dv_preset: ptr to v4l2_dv_preset struct
 585  *
 586  * Set the digital video preset for a TVP7002 decoder device.
 587  * Returns zero when successful or -EINVAL if register access fails.
 588  */
 589 static int tvp7002_s_dv_preset(struct v4l2_subdev *sd,
 590                                         struct v4l2_dv_preset *dv_preset)
 591 {
 592         struct tvp7002 *device = to_tvp7002(sd);
 593         u32 preset;
 594         int i;
 595
 596         for (i = 0; i < NUM_PRESETS; i++) {
 597                 preset = tvp7002_presets[i].preset;
 598                 if (preset == dv_preset->preset) {
 599                         device->current_preset = &tvp7002_presets[i];
 600                         return tvp7002_write_inittab(sd, tvp7002_presets[i].p_settings);
 601                 }
 602         }
 603
 604         return -EINVAL;
 605 }
 606
 607 /*
 608  * tvp7002_s_ctrl() - Set a control
 609  * @ctrl: ptr to v4l2_ctrl struct
 610  *
 611  * Set a control in TVP7002 decoder device.
 612  * Returns zero when successful or -EINVAL if register access fails.
 613  */
 614 static int tvp7002_s_ctrl(struct v4l2_ctrl *ctrl)
 615 {
 616         struct v4l2_subdev *sd = to_sd(ctrl);
 617         int error = 0;
 618
 619         switch (ctrl->id) {
 620         case V4L2_CID_GAIN:
 621                 tvp7002_write_err(sd, TVP7002_R_FINE_GAIN, ctrl->val, &error);
 622                 tvp7002_write_err(sd, TVP7002_G_FINE_GAIN, ctrl->val, &error);
 623                 tvp7002_write_err(sd, TVP7002_B_FINE_GAIN, ctrl->val, &error);
 624                 return error;
 625         }
 626         return -EINVAL;
 627 }
 628
 629 /*
 630  * tvp7002_mbus_fmt() - V4L2 decoder interface handler for try/s/g_mbus_fmt
 631  * @sd: pointer to standard V4L2 sub-device structure
 632  * @f: pointer to mediabus format structure
 633  *
 634  * Negotiate the image capture size and mediabus format.
 635  * There is only one possible format, so this single function works for
 636  * get, set and try.
 637  */
 638 static int tvp7002_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *f)
 639 {
 640         struct tvp7002 *device = to_tvp7002(sd);
 641         struct v4l2_dv_enum_preset e_preset;
 642         int error;
 643
 644         /* Calculate height and width based on current standard */
 645         error = v4l_fill_dv_preset_info(device->current_preset->preset, &e_preset);
 646         if (error)
 647                 return error;
 648
 649         f->width = e_preset.width;
 650         f->height = e_preset.height;
 651         f->code = V4L2_MBUS_FMT_YUYV10_1X20;
 652         f->field = device->current_preset->scanmode;
 653         f->colorspace = device->current_preset->color_space;
 654
 655         v4l2_dbg(1, debug, sd, "MBUS_FMT: Width - %d, Height - %d",
 656                         f->width, f->height);
 657         return 0;
 658 }
 659
 660 /*
 661  * tvp7002_query_dv_preset() - query DV preset
 662  * @sd: pointer to standard V4L2 sub-device structure
 663  * @qpreset: standard V4L2 v4l2_dv_preset structure
 664  *
 665  * Returns the current DV preset by TVP7002. If no active input is
 666  * detected, returns -EINVAL
 667  */
 668 static int tvp7002_query_dv_preset(struct v4l2_subdev *sd,
 669                                                 struct v4l2_dv_preset *qpreset)
 670 {
 671         const struct tvp7002_preset_definition *presets = tvp7002_presets;
 672         struct tvp7002 *device;
 673         u8 progressive;
 674         u32 lpfr;
 675         u32 cpln;
 676         int error = 0;
 677         u8 lpf_lsb;
 678         u8 lpf_msb;
 679         u8 cpl_lsb;
 680         u8 cpl_msb;
 681         int index;
 682
 683         /* Return invalid preset if no active input is detected */
 684         qpreset->preset = V4L2_DV_INVALID;
 685
 686         device = to_tvp7002(sd);
 687
 688         /* Read standards from device registers */
 689         tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_LSBS, &lpf_lsb, &error);
 690         tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_MSBS, &lpf_msb, &error);
 691
 692         if (error < 0)
 693                 return error;
 694
 695         tvp7002_read_err(sd, TVP7002_CLK_L_STAT_LSBS, &cpl_lsb, &error);
 696         tvp7002_read_err(sd, TVP7002_CLK_L_STAT_MSBS, &cpl_msb, &error);
 697
 698         if (error < 0)
 699                 return error;
 700
 701         /* Get lines per frame, clocks per line and interlaced/progresive */
 702         lpfr = lpf_lsb | ((TVP7002_CL_MASK & lpf_msb) << TVP7002_CL_SHIFT);
 703         cpln = cpl_lsb | ((TVP7002_CL_MASK & cpl_msb) << TVP7002_CL_SHIFT);
 704         progressive = (lpf_msb & TVP7002_INPR_MASK) >> TVP7002_IP_SHIFT;
 705
 706         /* Do checking of video modes */
 707         for (index = 0; index < NUM_PRESETS; index++, presets++)
 708                 if (lpfr  == presets->lines_per_frame &&
 709                         progressive == presets->progressive) {
 710                         if (presets->cpl_min == 0xffff)
 711                                 break;
 712                         if (cpln >= presets->cpl_min && cpln <= presets->cpl_max)
 713                                 break;
 714                 }
 715
 716         if (index == NUM_PRESETS) {
 717                 v4l2_dbg(1, debug, sd, "detection failed: lpf = %x, cpl = %x\n",
 718                                                                 lpfr, cpln);
 719                 return 0;
 720         }
 721
 722         /* Set values in found preset */
 723         qpreset->preset = presets->preset;
 724
 725         /* Update lines per frame and clocks per line info */
 726         v4l2_dbg(1, debug, sd, "detected preset: %d\n", presets->preset);
 727         return 0;
 728 }
 729
 730 #ifdef CONFIG_VIDEO_ADV_DEBUG
 731 /*
 732  * tvp7002_g_register() - Get the value of a register
 733  * @sd: ptr to v4l2_subdev struct
 734  * @reg: ptr to v4l2_dbg_register struct
 735  *
 736  * Get the value of a TVP7002 decoder device register.
 737  * Returns zero when successful, -EINVAL if register read fails or
 738  * access to I2C client fails, -EPERM if the call is not allowed
 739  * by disabled CAP_SYS_ADMIN.
 740  */
 741 static int tvp7002_g_register(struct v4l2_subdev *sd,
 742                                                 struct v4l2_dbg_register *reg)
 743 {
 744         struct i2c_client *client = v4l2_get_subdevdata(sd);
 745         u8 val;
 746         int ret;
 747
 748         if (!v4l2_chip_match_i2c_client(client, &reg->match))
 749                 return -EINVAL;
 750         if (!capable(CAP_SYS_ADMIN))
 751                 return -EPERM;
 752
 753         ret = tvp7002_read(sd, reg->reg & 0xff, &val);
 754         reg->val = val;
 755         return ret;
 756 }
 757
 758 /*
 759  * tvp7002_s_register() - set a control
 760  * @sd: ptr to v4l2_subdev struct
 761  * @reg: ptr to v4l2_dbg_register struct
 762  *
 763  * Get the value of a TVP7002 decoder device register.
 764  * Returns zero when successful, -EINVAL if register read fails or
 765  * -EPERM if call not allowed.
 766  */
 767 static int tvp7002_s_register(struct v4l2_subdev *sd,
 768                                                 struct v4l2_dbg_register *reg)
 769 {
 770         struct i2c_client *client = v4l2_get_subdevdata(sd);
 771
 772         if (!v4l2_chip_match_i2c_client(client, &reg->match))
 773                 return -EINVAL;
 774         if (!capable(CAP_SYS_ADMIN))
 775                 return -EPERM;
 776
 777         return tvp7002_write(sd, reg->reg & 0xff, reg->val & 0xff);
 778 }
 779 #endif
 780
 781 /*
 782  * tvp7002_enum_mbus_fmt() - Enum supported mediabus formats
 783  * @sd: pointer to standard V4L2 sub-device structure
 784  * @index: format index
 785  * @code: pointer to mediabus format
 786  *
 787  * Enumerate supported mediabus formats.
 788  */
 789
 790 static int tvp7002_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned index,
 791                                         enum v4l2_mbus_pixelcode *code)
 792 {
 793         /* Check requested format index is within range */
 794         if (index)
 795                 return -EINVAL;
 796         *code = V4L2_MBUS_FMT_YUYV10_1X20;
 797         return 0;
 798 }
 799
 800 /*
 801  * tvp7002_s_stream() - V4L2 decoder i/f handler for s_stream
 802  * @sd: pointer to standard V4L2 sub-device structure
 803  * @enable: streaming enable or disable
 804  *
 805  * Sets streaming to enable or disable, if possible.
 806  */
 807 static int tvp7002_s_stream(struct v4l2_subdev *sd, int enable)
 808 {
 809         struct tvp7002 *device = to_tvp7002(sd);
 810         int error = 0;
 811
 812         if (device->streaming == enable)
 813                 return 0;
 814
 815         if (enable) {
 816                 /* Set output state on (low impedance means stream on) */
 817                 error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x00);
 818                 device->streaming = enable;
 819         } else {
 820                 /* Set output state off (high impedance means stream off) */
 821                 error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x03);
 822                 if (error)
 823                         v4l2_dbg(1, debug, sd, "Unable to stop streaming\n");
 824
 825                 device->streaming = enable;
 826         }
 827
 828         return error;
 829 }
 830
 831 /*
 832  * tvp7002_log_status() - Print information about register settings
 833  * @sd: ptr to v4l2_subdev struct
 834  *
 835  * Log register values of a TVP7002 decoder device.
 836  * Returns zero or -EINVAL if read operation fails.
 837  */
 838 static int tvp7002_log_status(struct v4l2_subdev *sd)
 839 {
 840         const struct tvp7002_preset_definition *presets = tvp7002_presets;
 841         struct tvp7002 *device = to_tvp7002(sd);
 842         struct v4l2_dv_enum_preset e_preset;
 843         struct v4l2_dv_preset detected;
 844         int i;
 845
 846         detected.preset = V4L2_DV_INVALID;
 847         /* Find my current standard*/
 848         tvp7002_query_dv_preset(sd, &detected);
 849
 850         /* Print standard related code values */
 851         for (i = 0; i < NUM_PRESETS; i++, presets++)
 852                 if (presets->preset == detected.preset)
 853                         break;
 854
 855         if (v4l_fill_dv_preset_info(device->current_preset->preset, &e_preset))
 856                 return -EINVAL;
 857
 858         v4l2_info(sd, "Selected DV Preset: %s\n", e_preset.name);
 859         v4l2_info(sd, "   Pixels per line: %u\n", e_preset.width);
 860         v4l2_info(sd, "   Lines per frame: %u\n\n", e_preset.height);
 861         if (i == NUM_PRESETS) {
 862                 v4l2_info(sd, "Detected DV Preset: None\n");
 863         } else {
 864                 if (v4l_fill_dv_preset_info(presets->preset, &e_preset))
 865                         return -EINVAL;
 866                 v4l2_info(sd, "Detected DV Preset: %s\n", e_preset.name);
 867                 v4l2_info(sd, "  Pixels per line: %u\n", e_preset.width);
 868                 v4l2_info(sd, "  Lines per frame: %u\n\n", e_preset.height);
 869         }
 870         v4l2_info(sd, "Streaming enabled: %s\n",
 871                                         device->streaming ? "yes" : "no");
 872
 873         /* Print the current value of the gain control */
 874         v4l2_ctrl_handler_log_status(&device->hdl, sd->name);
 875
 876         return 0;
 877 }
 878
 879 /*
 880  * tvp7002_enum_dv_presets() - Enum supported digital video formats
 881  * @sd: pointer to standard V4L2 sub-device structure
 882  * @preset: pointer to format struct
 883  *
 884  * Enumerate supported digital video formats.
 885  */
 886 static int tvp7002_enum_dv_presets(struct v4l2_subdev *sd,
 887                 struct v4l2_dv_enum_preset *preset)
 888 {
 889         /* Check requested format index is within range */
 890         if (preset->index >= NUM_PRESETS)
 891                 return -EINVAL;
 892
 893         return v4l_fill_dv_preset_info(tvp7002_presets[preset->index].preset, preset);
 894 }
 895
 896 static const struct v4l2_ctrl_ops tvp7002_ctrl_ops = {
 897         .s_ctrl = tvp7002_s_ctrl,
 898 };
 899
 900 /* V4L2 core operation handlers */
 901 static const struct v4l2_subdev_core_ops tvp7002_core_ops = {
 902         .g_chip_ident = tvp7002_g_chip_ident,
 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         .enum_dv_presets = tvp7002_enum_dv_presets,
 920         .s_dv_preset = tvp7002_s_dv_preset,
 921         .query_dv_preset = tvp7002_query_dv_preset,
 922         .s_stream = tvp7002_s_stream,
 923         .g_mbus_fmt = tvp7002_mbus_fmt,
 924         .try_mbus_fmt = tvp7002_mbus_fmt,
 925         .s_mbus_fmt = tvp7002_mbus_fmt,
 926         .enum_mbus_fmt = tvp7002_enum_mbus_fmt,
 927 };
 928
 929 /* V4L2 top level operation handlers */
 930 static const struct v4l2_subdev_ops tvp7002_ops = {
 931         .core = &tvp7002_core_ops,
 932         .video = &tvp7002_video_ops,
 933 };
 934
 935 /*
 936  * tvp7002_probe - Probe a TVP7002 device
 937  * @c: ptr to i2c_client struct
 938  * @id: ptr to i2c_device_id struct
 939  *
 940  * Initialize the TVP7002 device
 941  * Returns zero when successful, -EINVAL if register read fails or
 942  * -EIO if i2c access is not available.
 943  */
 944 static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
 945 {
 946         struct v4l2_subdev *sd;
 947         struct tvp7002 *device;
 948         struct v4l2_dv_preset preset;
 949         int polarity_a;
 950         int polarity_b;
 951         u8 revision;
 952
 953         int error;
 954
 955         /* Check if the adapter supports the needed features */
 956         if (!i2c_check_functionality(c->adapter,
 957                 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
 958                 return -EIO;
 959
 960         if (!c->dev.platform_data) {
 961                 v4l_err(c, "No platform data!!\n");
 962                 return -ENODEV;
 963         }
 964
 965         device = kzalloc(sizeof(struct tvp7002), GFP_KERNEL);
 966
 967         if (!device)
 968                 return -ENOMEM;
 969
 970         sd = &device->sd;
 971         device->pdata = c->dev.platform_data;
 972         device->current_preset = tvp7002_presets;
 973
 974         /* Tell v4l2 the device is ready */
 975         v4l2_i2c_subdev_init(sd, c, &tvp7002_ops);
 976         v4l_info(c, "tvp7002 found @ 0x%02x (%s)\n",
 977                                         c->addr, c->adapter->name);
 978
 979         error = tvp7002_read(sd, TVP7002_CHIP_REV, &revision);
 980         if (error < 0)
 981                 goto found_error;
 982
 983         /* Get revision number */
 984         v4l2_info(sd, "Rev. %02x detected.\n", revision);
 985         if (revision != 0x02)
 986                 v4l2_info(sd, "Unknown revision detected.\n");
 987
 988         /* Initializes TVP7002 to its default values */
 989         error = tvp7002_write_inittab(sd, tvp7002_init_default);
 990
 991         if (error < 0)
 992                 goto found_error;
 993
 994         /* Set polarity information after registers have been set */
 995         polarity_a = 0x20 | device->pdata->hs_polarity << 5
 996                         | device->pdata->vs_polarity << 2;
 997         error = tvp7002_write(sd, TVP7002_SYNC_CTL_1, polarity_a);
 998         if (error < 0)
 999                 goto found_error;
1000
1001         polarity_b = 0x01  | device->pdata->fid_polarity << 2
1002                         | device->pdata->sog_polarity << 1
1003                         | device->pdata->clk_polarity;
1004         error = tvp7002_write(sd, TVP7002_MISC_CTL_3, polarity_b);
1005         if (error < 0)
1006                 goto found_error;
1007
1008         /* Set registers according to default video mode */
1009         preset.preset = device->current_preset->preset;
1010         error = tvp7002_s_dv_preset(sd, &preset);
1011
1012         v4l2_ctrl_handler_init(&device->hdl, 1);
1013         v4l2_ctrl_new_std(&device->hdl, &tvp7002_ctrl_ops,
1014                         V4L2_CID_GAIN, 0, 255, 1, 0);
1015         sd->ctrl_handler = &device->hdl;
1016         if (device->hdl.error) {
1017                 int err = device->hdl.error;
1018
1019                 v4l2_ctrl_handler_free(&device->hdl);
1020                 kfree(device);
1021                 return err;
1022         }
1023         v4l2_ctrl_handler_setup(&device->hdl);
1024
1025 found_error:
1026         if (error < 0)
1027                 kfree(device);
1028
1029         return error;
1030 }
1031
1032 /*
1033  * tvp7002_remove - Remove TVP7002 device support
1034  * @c: ptr to i2c_client struct
1035  *
1036  * Reset the TVP7002 device
1037  * Returns zero.
1038  */
1039 static int tvp7002_remove(struct i2c_client *c)
1040 {
1041         struct v4l2_subdev *sd = i2c_get_clientdata(c);
1042         struct tvp7002 *device = to_tvp7002(sd);
1043
1044         v4l2_dbg(1, debug, sd, "Removing tvp7002 adapter"
1045                                 "on address 0x%x\n", c->addr);
1046
1047         v4l2_device_unregister_subdev(sd);
1048         v4l2_ctrl_handler_free(&device->hdl);
1049         kfree(device);
1050         return 0;
1051 }
1052
1053 /* I2C Device ID table */
1054 static const struct i2c_device_id tvp7002_id[] = {
1055         { "tvp7002", 0 },
1056         { }
1057 };
1058 MODULE_DEVICE_TABLE(i2c, tvp7002_id);
1059
1060 /* I2C driver data */
1061 static struct i2c_driver tvp7002_driver = {
1062         .driver = {
1063                 .owner = THIS_MODULE,
1064                 .name = TVP7002_MODULE_NAME,
1065         },
1066         .probe = tvp7002_probe,
1067         .remove = tvp7002_remove,
1068         .id_table = tvp7002_id,
1069 };
1070
1071 /*
1072  * tvp7002_init - Initialize driver via I2C interface
1073  *
1074  * Register the TVP7002 driver.
1075  * Return 0 on success or error code on failure.
1076  */
1077 static int __init tvp7002_init(void)
1078 {
1079         return i2c_add_driver(&tvp7002_driver);
1080 }
1081
1082 /*
1083  * tvp7002_exit - Remove driver via I2C interface
1084  *
1085  * Unregister the TVP7002 driver.
1086  * Returns nothing.
1087  */
1088 static void __exit tvp7002_exit(void)
1089 {
1090         i2c_del_driver(&tvp7002_driver);
1091 }
1092
1093 module_init(tvp7002_init);
1094 module_exit(tvp7002_exit);