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/videodev2.h>
  30 #include <media/tvp7002.h>
  31 #include <media/v4l2-device.h>
  32 #include <media/v4l2-chip-ident.h>
  33 #include <media/v4l2-common.h>
  34 #include "tvp7002_reg.h"
  35
  36 MODULE_DESCRIPTION("TI TVP7002 Video and Graphics Digitizer driver");
  37 MODULE_AUTHOR("Santiago Nunez-Corrales <santiago.nunez@ridgerun.com>");
  38 MODULE_LICENSE("GPL");
  39
  40 /* Module Name */
  41 #define TVP7002_MODULE_NAME     "tvp7002"
  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 int 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, 0x00, 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, 0x0a, TVP7002_WRITE },
 182         { TVP7002_HPLL_CRTL, 0x02, TVP7002_WRITE },
 183         { TVP7002_HPLL_PHASE_SEL, 0x14, TVP7002_WRITE },
 184         { TVP7002_AVID_START_PIXEL_LSBS, 0x91, TVP7002_WRITE },
 185         { TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 186         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x0B, TVP7002_WRITE },
 187         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 188         { TVP7002_VBLK_F_0_START_L_OFF, 0x03, TVP7002_WRITE },
 189         { TVP7002_VBLK_F_1_START_L_OFF, 0x01, TVP7002_WRITE },
 190         { TVP7002_VBLK_F_0_DURATION, 0x13, TVP7002_WRITE },
 191         { TVP7002_VBLK_F_1_DURATION, 0x13, TVP7002_WRITE },
 192         { TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
 193         { TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
 194         { TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
 195         { TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
 196         { TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
 197         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 198 };
 199
 200 /* Register parameters for 576P */
 201 static const struct i2c_reg_value tvp7002_parms_576P[] = {
 202         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x36, TVP7002_WRITE },
 203         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
 204         { TVP7002_HPLL_CRTL, 0x18, TVP7002_WRITE },
 205         { TVP7002_HPLL_PHASE_SEL, 0x14, 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, 0x08, TVP7002_WRITE },
 226         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 227         { TVP7002_HPLL_PHASE_SEL, 0x14, TVP7002_WRITE },
 228         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 229         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 230         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 231         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 232         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 233         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 234         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 235         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 236         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 237         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 238         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 239         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 240         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 241         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 242 };
 243
 244 /* Register parameters for 1080P60 */
 245 static const struct i2c_reg_value tvp7002_parms_1080P60[] = {
 246         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
 247         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x08, TVP7002_WRITE },
 248         { TVP7002_HPLL_CRTL, 0xE0, TVP7002_WRITE },
 249         { TVP7002_HPLL_PHASE_SEL, 0x14, TVP7002_WRITE },
 250         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 251         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 252         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 253         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 254         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 255         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 256         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 257         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 258         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 259         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 260         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 261         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 262         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 263         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 264 };
 265
 266 /* Register parameters for 1080I50 */
 267 static const struct i2c_reg_value tvp7002_parms_1080I50[] = {
 268         { TVP7002_HPLL_FDBK_DIV_MSBS, 0xa5, TVP7002_WRITE },
 269         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
 270         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 271         { TVP7002_HPLL_PHASE_SEL, 0x14, TVP7002_WRITE },
 272         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 273         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 274         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 275         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 276         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 277         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 278         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 279         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 280         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 281         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 282         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 283         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 284         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 285         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 286 };
 287
 288 /* Register parameters for 720P60 */
 289 static const struct i2c_reg_value tvp7002_parms_720P60[] = {
 290         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
 291         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x02, TVP7002_WRITE },
 292         { TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
 293         { TVP7002_HPLL_PHASE_SEL, 0x16, TVP7002_WRITE },
 294         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
 295         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 296         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
 297         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
 298         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 299         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 300         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 301         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 302         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 303         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 304         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 305         { TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
 306         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 307         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 308 };
 309
 310 /* Register parameters for 720P50 */
 311 static const struct i2c_reg_value tvp7002_parms_720P50[] = {
 312         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x7b, TVP7002_WRITE },
 313         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x0c, TVP7002_WRITE },
 314         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 315         { TVP7002_HPLL_PHASE_SEL, 0x16, TVP7002_WRITE },
 316         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
 317         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 318         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
 319         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
 320         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 321         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 322         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 323         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 324         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 325         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 326         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 327         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 328         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 329         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 330 };
 331
 332 /* Struct list for available formats */
 333 static const struct v4l2_fmtdesc tvp7002_fmt_list[] = {
 334         {
 335          .index = 0,
 336          .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
 337          .flags = 0,
 338          .description = "8-bit UYVY 4:2:2 Format",
 339          .pixelformat = V4L2_PIX_FMT_UYVY,
 340         },
 341 };
 342
 343 #define NUM_FORMATS             ARRAY_SIZE(tvp7002_fmt_list)
 344
 345 /* Preset definition for handling device operation */
 346 struct tvp7002_preset_definition {
 347         u32 preset;
 348         const struct i2c_reg_value *p_settings;
 349         enum v4l2_colorspace color_space;
 350         enum v4l2_field scanmode;
 351         u16 progressive;
 352         u16 lines_per_frame;
 353         u16 cpl_min;
 354         u16 cpl_max;
 355 };
 356
 357 /* Struct list for digital video presets */
 358 static const struct tvp7002_preset_definition tvp7002_presets[] = {
 359         {
 360                 V4L2_DV_720P60,
 361                 tvp7002_parms_720P60,
 362                 V4L2_COLORSPACE_REC709,
 363                 V4L2_FIELD_NONE,
 364                 1,
 365                 0x2EE,
 366                 135,
 367                 153
 368         },
 369         {
 370                 V4L2_DV_1080I60,
 371                 tvp7002_parms_1080I60,
 372                 V4L2_COLORSPACE_REC709,
 373                 V4L2_FIELD_INTERLACED,
 374                 0,
 375                 0x465,
 376                 181,
 377                 205
 378         },
 379         {
 380                 V4L2_DV_1080I50,
 381                 tvp7002_parms_1080I50,
 382                 V4L2_COLORSPACE_REC709,
 383                 V4L2_FIELD_INTERLACED,
 384                 0,
 385                 0x465,
 386                 217,
 387                 245
 388         },
 389         {
 390                 V4L2_DV_720P50,
 391                 tvp7002_parms_720P50,
 392                 V4L2_COLORSPACE_REC709,
 393                 V4L2_FIELD_NONE,
 394                 1,
 395                 0x2EE,
 396                 163,
 397                 183
 398         },
 399         {
 400                 V4L2_DV_1080P60,
 401                 tvp7002_parms_1080P60,
 402                 V4L2_COLORSPACE_REC709,
 403                 V4L2_FIELD_NONE,
 404                 1,
 405                 0x465,
 406                 90,
 407                 102
 408         },
 409         {
 410                 V4L2_DV_480P59_94,
 411                 tvp7002_parms_480P,
 412                 V4L2_COLORSPACE_SMPTE170M,
 413                 V4L2_FIELD_NONE,
 414                 1,
 415                 0x20D,
 416                 0xffff,
 417                 0xffff
 418         },
 419         {
 420                 V4L2_DV_576P50,
 421                 tvp7002_parms_576P,
 422                 V4L2_COLORSPACE_SMPTE170M,
 423                 V4L2_FIELD_NONE,
 424                 1,
 425                 0x271,
 426                 0xffff,
 427                 0xffff
 428         }
 429 };
 430
 431 #define NUM_PRESETS     ARRAY_SIZE(tvp7002_presets)
 432
 433 /* Device definition */
 434 struct tvp7002 {
 435         struct v4l2_subdev sd;
 436         const struct tvp7002_config *pdata;
 437
 438         int ver;
 439         int streaming;
 440
 441         struct v4l2_pix_format pix;
 442         const struct tvp7002_preset_definition *current_preset;
 443         u8 gain;
 444 };
 445
 446 /*
 447  * to_tvp7002 - Obtain device handler TVP7002
 448  * @sd: ptr to v4l2_subdev struct
 449  *
 450  * Returns device handler tvp7002.
 451  */
 452 static inline struct tvp7002 *to_tvp7002(struct v4l2_subdev *sd)
 453 {
 454         return container_of(sd, struct tvp7002, sd);
 455 }
 456
 457 /*
 458  * tvp7002_read - Read a value from a register in an TVP7002
 459  * @sd: ptr to v4l2_subdev struct
 460  * @reg: TVP7002 register address
 461  * @dst: pointer to 8-bit destination
 462  *
 463  * Returns value read if successful, or non-zero (-1) otherwise.
 464  */
 465 static int tvp7002_read(struct v4l2_subdev *sd, u8 addr, u8 *dst)
 466 {
 467         struct i2c_client *c = v4l2_get_subdevdata(sd);
 468         int retry;
 469         int error;
 470
 471         for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
 472                 error = i2c_smbus_read_byte_data(c, addr);
 473
 474                 if (error >= 0) {
 475                         *dst = (u8)error;
 476                         return 0;
 477                 }
 478
 479                 msleep_interruptible(10);
 480         }
 481         v4l2_err(sd, "TVP7002 read error %d\n", error);
 482         return error;
 483 }
 484
 485 /*
 486  * tvp7002_read_err() - Read a register value with error code
 487  * @sd: pointer to standard V4L2 sub-device structure
 488  * @reg: destination register
 489  * @val: value to be read
 490  * @error: pointer to error value
 491  *
 492  * Read a value in a register and save error value in pointer.
 493  * Also update the register table if successful
 494  */
 495 static inline void tvp7002_read_err(struct v4l2_subdev *sd, u8 reg,
 496                                                         u8 *dst, int *err)
 497 {
 498         if (!*err)
 499                 *err = tvp7002_read(sd, reg, dst);
 500 }
 501
 502 /*
 503  * tvp7002_write() - Write a value to a register in TVP7002
 504  * @sd: ptr to v4l2_subdev struct
 505  * @addr: TVP7002 register address
 506  * @value: value to be written to the register
 507  *
 508  * Write a value to a register in an TVP7002 decoder device.
 509  * Returns zero if successful, or non-zero otherwise.
 510  */
 511 static int tvp7002_write(struct v4l2_subdev *sd, u8 addr, u8 value)
 512 {
 513         struct i2c_client *c;
 514         int retry;
 515         int error;
 516
 517         c = v4l2_get_subdevdata(sd);
 518
 519         for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
 520                 error = i2c_smbus_write_byte_data(c, addr, value);
 521
 522                 if (error >= 0)
 523                         return 0;
 524
 525                 v4l2_warn(sd, "Write: retry ... %d\n", retry);
 526                 msleep_interruptible(10);
 527         }
 528         v4l2_err(sd, "TVP7002 write error %d\n", error);
 529         return error;
 530 }
 531
 532 /*
 533  * tvp7002_write_err() - Write a register value with error code
 534  * @sd: pointer to standard V4L2 sub-device structure
 535  * @reg: destination register
 536  * @val: value to be written
 537  * @error: pointer to error value
 538  *
 539  * Write a value in a register and save error value in pointer.
 540  * Also update the register table if successful
 541  */
 542 static inline void tvp7002_write_err(struct v4l2_subdev *sd, u8 reg,
 543                                                         u8 val, int *err)
 544 {
 545         if (!*err)
 546                 *err = tvp7002_write(sd, reg, val);
 547 }
 548
 549 /*
 550  * tvp7002_g_chip_ident() - Get chip identification number
 551  * @sd: ptr to v4l2_subdev struct
 552  * @chip: ptr to v4l2_dbg_chip_ident struct
 553  *
 554  * Obtains the chip's identification number.
 555  * Returns zero or -EINVAL if read operation fails.
 556  */
 557 static int tvp7002_g_chip_ident(struct v4l2_subdev *sd,
 558                                         struct v4l2_dbg_chip_ident *chip)
 559 {
 560         u8 rev;
 561         int error;
 562         struct i2c_client *client = v4l2_get_subdevdata(sd);
 563
 564         error = tvp7002_read(sd, TVP7002_CHIP_REV, &rev);
 565
 566         if (error < 0)
 567                 return error;
 568
 569         return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_TVP7002, rev);
 570 }
 571
 572 /*
 573  * tvp7002_write_inittab() - Write initialization values
 574  * @sd: ptr to v4l2_subdev struct
 575  * @regs: ptr to i2c_reg_value struct
 576  *
 577  * Write initialization values.
 578  * Returns zero or -EINVAL if read operation fails.
 579  */
 580 static int tvp7002_write_inittab(struct v4l2_subdev *sd,
 581                                         const struct i2c_reg_value *regs)
 582 {
 583         int error = 0;
 584
 585         /* Initialize the first (defined) registers */
 586         while (TVP7002_EOR != regs->reg) {
 587                 if (TVP7002_WRITE == regs->type)
 588                         tvp7002_write_err(sd, regs->reg, regs->value, &error);
 589                 regs++;
 590         }
 591
 592         return error;
 593 }
 594
 595 /*
 596  * tvp7002_s_dv_preset() - Set digital video preset
 597  * @sd: ptr to v4l2_subdev struct
 598  * @std: ptr to v4l2_dv_preset struct
 599  *
 600  * Set the digital video preset for a TVP7002 decoder device.
 601  * Returns zero when successful or -EINVAL if register access fails.
 602  */
 603 static int tvp7002_s_dv_preset(struct v4l2_subdev *sd,
 604                                         struct v4l2_dv_preset *dv_preset)
 605 {
 606         struct tvp7002 *device = to_tvp7002(sd);
 607         u32 preset;
 608         int i;
 609
 610         for (i = 0; i < NUM_PRESETS; i++) {
 611                 preset = tvp7002_presets[i].preset;
 612                 if (preset == dv_preset->preset) {
 613                         device->current_preset = &tvp7002_presets[i];
 614                         return tvp7002_write_inittab(sd, tvp7002_presets[i].p_settings);
 615                 }
 616         }
 617
 618         return -EINVAL;
 619 }
 620
 621 /*
 622  * tvp7002_g_ctrl() - Get a control
 623  * @sd: ptr to v4l2_subdev struct
 624  * @ctrl: ptr to v4l2_control struct
 625  *
 626  * Get a control for a TVP7002 decoder device.
 627  * Returns zero when successful or -EINVAL if register access fails.
 628  */
 629 static int tvp7002_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 630 {
 631         struct tvp7002 *device = to_tvp7002(sd);
 632
 633         switch (ctrl->id) {
 634         case V4L2_CID_GAIN:
 635                 ctrl->value = device->gain;
 636                 return 0;
 637         default:
 638                 return -EINVAL;
 639         }
 640 }
 641
 642 /*
 643  * tvp7002_s_ctrl() - Set a control
 644  * @sd: ptr to v4l2_subdev struct
 645  * @ctrl: ptr to v4l2_control struct
 646  *
 647  * Set a control in TVP7002 decoder device.
 648  * Returns zero when successful or -EINVAL if register access fails.
 649  */
 650 static int tvp7002_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 651 {
 652         struct tvp7002 *device = to_tvp7002(sd);
 653         int error = 0;
 654
 655         switch (ctrl->id) {
 656         case V4L2_CID_GAIN:
 657                 tvp7002_write_err(sd, TVP7002_R_FINE_GAIN,
 658                                                 ctrl->value & 0xff, &error);
 659                 tvp7002_write_err(sd, TVP7002_G_FINE_GAIN,
 660                                                 ctrl->value & 0xff, &error);
 661                 tvp7002_write_err(sd, TVP7002_B_FINE_GAIN,
 662                                                 ctrl->value & 0xff, &error);
 663
 664                 if (error < 0)
 665                         return error;
 666
 667                 /* Set only after knowing there is no error */
 668                 device->gain = ctrl->value & 0xff;
 669                 return 0;
 670         default:
 671                 return -EINVAL;
 672         }
 673 }
 674
 675 /*
 676  * tvp7002_queryctrl() - Query a control
 677  * @sd: ptr to v4l2_subdev struct
 678  * @ctrl: ptr to v4l2_queryctrl struct
 679  *
 680  * Query a control of a TVP7002 decoder device.
 681  * Returns zero when successful or -EINVAL if register read fails.
 682  */
 683 static int tvp7002_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
 684 {
 685         switch (qc->id) {
 686         case V4L2_CID_GAIN:
 687                 /*
 688                  * Gain is supported [0-255, default=0, step=1]
 689                  */
 690                 return v4l2_ctrl_query_fill(qc, 0, 255, 1, 0);
 691         default:
 692                 return -EINVAL;
 693         }
 694 }
 695
 696 /*
 697  * tvp7002_try_fmt_cap() - V4L2 decoder interface handler for try_fmt
 698  * @sd: pointer to standard V4L2 sub-device structure
 699  * @f: pointer to standard V4L2 VIDIOC_TRY_FMT ioctl structure
 700  *
 701  * Implement the VIDIOC_TRY_FMT ioctl for the CAPTURE buffer type. This
 702  * ioctl is used to negotiate the image capture size and pixel format
 703  * without actually making it take effect.
 704  */
 705 static int tvp7002_try_fmt_cap(struct v4l2_subdev *sd, struct v4l2_format *f)
 706 {
 707         struct tvp7002 *device = to_tvp7002(sd);
 708         struct v4l2_dv_enum_preset e_preset;
 709         struct v4l2_pix_format *pix;
 710         int error = 0;
 711
 712         pix = &f->fmt.pix;
 713
 714         /* Calculate height and width based on current standard */
 715         error = v4l_fill_dv_preset_info(device->current_preset->preset, &e_preset);
 716         if (error)
 717                 return -EINVAL;
 718
 719         pix->width = e_preset.width;
 720         pix->height = e_preset.height;
 721         pix->pixelformat = V4L2_PIX_FMT_UYVY;
 722         pix->field = device->current_preset->scanmode;
 723         pix->bytesperline = pix->width * 2;
 724         pix->sizeimage = pix->bytesperline * pix->height;
 725         pix->colorspace = device->current_preset->color_space;
 726         pix->priv = 0;
 727
 728         v4l2_dbg(1, debug, sd, "Try FMT: pixelformat - %s, bytesperline - %d"
 729                         "Width - %d, Height - %d", "8-bit UYVY 4:2:2 Format",
 730                         pix->bytesperline, pix->width, pix->height);
 731         return error;
 732 }
 733
 734 /*
 735  * tvp7002_s_fmt() - V4L2 decoder interface handler for s_fmt
 736  * @sd: pointer to standard V4L2 sub-device structure
 737  * @f: pointer to standard V4L2 VIDIOC_S_FMT ioctl structure
 738  *
 739  * If the requested format is supported, configures the HW to use that
 740  * format, returns error code if format not supported or HW can't be
 741  * correctly configured.
 742  */
 743 static int tvp7002_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
 744 {
 745         struct tvp7002 *decoder = to_tvp7002(sd);
 746         int rval;
 747
 748         rval = tvp7002_try_fmt_cap(sd, f);
 749         if (!rval)
 750                 decoder->pix = f->fmt.pix;
 751         return rval;
 752 }
 753
 754 /*
 755  * tvp7002_g_fmt() - V4L2 decoder interface handler for tvp7002_g_fmt
 756  * @sd: pointer to standard V4L2 sub-device structure
 757  * @f: pointer to standard V4L2 v4l2_format structure
 758  *
 759  * Returns the decoder's current pixel format in the v4l2_format
 760  * parameter.
 761  */
 762 static int tvp7002_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
 763 {
 764         struct tvp7002 *decoder = to_tvp7002(sd);
 765
 766         f->fmt.pix = decoder->pix;
 767
 768         v4l2_dbg(1, debug, sd, "Current FMT: bytesperline - %d"
 769                         "Width - %d, Height - %d",
 770                         decoder->pix.bytesperline,
 771                         decoder->pix.width, decoder->pix.height);
 772         return 0;
 773 }
 774
 775 /*
 776  * tvp7002_query_dv_preset() - query DV preset
 777  * @sd: pointer to standard V4L2 sub-device structure
 778  * @std_id: standard V4L2 v4l2_dv_preset
 779  *
 780  * Returns the current DV preset by TVP7002. If no active input is
 781  * detected, returns -EINVAL
 782  */
 783 static int tvp7002_query_dv_preset(struct v4l2_subdev *sd,
 784                                                 struct v4l2_dv_preset *qpreset)
 785 {
 786         const struct tvp7002_preset_definition *presets = tvp7002_presets;
 787         struct v4l2_dv_enum_preset e_preset;
 788         struct tvp7002 *device;
 789         u8 progressive;
 790         u32 lpfr;
 791         u32 cpln;
 792         int error = 0;
 793         u8 lpf_lsb;
 794         u8 lpf_msb;
 795         u8 cpl_lsb;
 796         u8 cpl_msb;
 797         int index;
 798
 799         device = to_tvp7002(sd);
 800
 801         /* Read standards from device registers */
 802         tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_LSBS, &lpf_lsb, &error);
 803         tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_MSBS, &lpf_msb, &error);
 804
 805         if (error < 0)
 806                 return error;
 807
 808         tvp7002_read_err(sd, TVP7002_CLK_L_STAT_LSBS, &cpl_lsb, &error);
 809         tvp7002_read_err(sd, TVP7002_CLK_L_STAT_MSBS, &cpl_msb, &error);
 810
 811         if (error < 0)
 812                 return error;
 813
 814         /* Get lines per frame, clocks per line and interlaced/progresive */
 815         lpfr = lpf_lsb | ((TVP7002_CL_MASK & lpf_msb) << TVP7002_CL_SHIFT);
 816         cpln = cpl_lsb | ((TVP7002_CL_MASK & cpl_msb) << TVP7002_CL_SHIFT);
 817         progressive = (lpf_msb & TVP7002_INPR_MASK) >> TVP7002_IP_SHIFT;
 818
 819         /* Do checking of video modes */
 820         for (index = 0; index < NUM_PRESETS; index++, presets++)
 821                 if (lpfr  == presets->lines_per_frame &&
 822                         progressive == presets->progressive) {
 823                         if (presets->cpl_min == 0xffff)
 824                                 break;
 825                         if (cpln >= presets->cpl_min && cpln <= presets->cpl_max)
 826                                 break;
 827                 }
 828
 829         if (index == NUM_PRESETS) {
 830                 v4l2_err(sd, "querystd error, lpf = %x, cpl = %x\n",
 831                                                                 lpfr, cpln);
 832                 return -EINVAL;
 833         }
 834
 835         if (v4l_fill_dv_preset_info(presets->preset, &e_preset))
 836                 return -EINVAL;
 837
 838         /* Set values in found preset */
 839         qpreset->preset = presets->preset;
 840
 841         /* Update lines per frame and clocks per line info */
 842         v4l2_dbg(1, debug, sd, "Current preset: %d %d",
 843                                         e_preset.width, e_preset.height);
 844         return 0;
 845 }
 846
 847 #ifdef CONFIG_VIDEO_ADV_DEBUG
 848 /*
 849  * tvp7002_g_register() - Get the value of a register
 850  * @sd: ptr to v4l2_subdev struct
 851  * @vreg: ptr to v4l2_dbg_register struct
 852  *
 853  * Get the value of a TVP7002 decoder device register.
 854  * Returns zero when successful, -EINVAL if register read fails or
 855  * access to I2C client fails, -EPERM if the call is not allowed
 856  * by diabled CAP_SYS_ADMIN.
 857  */
 858 static int tvp7002_g_register(struct v4l2_subdev *sd,
 859                                                 struct v4l2_dbg_register *reg)
 860 {
 861         struct i2c_client *client = v4l2_get_subdevdata(sd);
 862         u8 val;
 863         int ret;
 864
 865         if (!v4l2_chip_match_i2c_client(client, &reg->match))
 866                 return -EINVAL;
 867         if (!capable(CAP_SYS_ADMIN))
 868                 return -EPERM;
 869
 870         ret = tvp7002_read(sd, reg->reg & 0xff, &val);
 871         reg->val = val;
 872         return ret;
 873 }
 874
 875 /*
 876  * tvp7002_s_register() - set a control
 877  * @sd: ptr to v4l2_subdev struct
 878  * @ctrl: ptr to v4l2_control struct
 879  *
 880  * Get the value of a TVP7002 decoder device register.
 881  * Returns zero when successful, -EINVAL if register read fails or
 882  * -EPERM if call not allowed.
 883  */
 884 static int tvp7002_s_register(struct v4l2_subdev *sd,
 885                                                 struct v4l2_dbg_register *reg)
 886 {
 887         struct i2c_client *client = v4l2_get_subdevdata(sd);
 888
 889         if (!v4l2_chip_match_i2c_client(client, &reg->match))
 890                 return -EINVAL;
 891         if (!capable(CAP_SYS_ADMIN))
 892                 return -EPERM;
 893
 894         return tvp7002_write(sd, reg->reg & 0xff, reg->val & 0xff);
 895 }
 896 #endif
 897
 898 /*
 899  * tvp7002_enum_fmt() - Enum supported formats
 900  * @sd: pointer to standard V4L2 sub-device structure
 901  * @enable: pointer to format struct
 902  *
 903  * Enumerate supported formats.
 904  */
 905
 906 static int tvp7002_enum_fmt(struct v4l2_subdev *sd,
 907                                                 struct v4l2_fmtdesc *fmtdesc)
 908 {
 909         /* Check requested format index is within range */
 910         if (fmtdesc->index < 0 || fmtdesc->index >= NUM_FORMATS)
 911                 return -EINVAL;
 912         *fmtdesc = tvp7002_fmt_list[fmtdesc->index];
 913
 914         return 0;
 915 }
 916
 917 /*
 918  * tvp7002_s_stream() - V4L2 decoder i/f handler for s_stream
 919  * @sd: pointer to standard V4L2 sub-device structure
 920  * @enable: streaming enable or disable
 921  *
 922  * Sets streaming to enable or disable, if possible.
 923  */
 924 static int tvp7002_s_stream(struct v4l2_subdev *sd, int enable)
 925 {
 926         struct tvp7002 *device = to_tvp7002(sd);
 927         int error = 0;
 928
 929         if (device->streaming == enable)
 930                 return 0;
 931
 932         if (enable) {
 933                 /* Set output state on (low impedance means stream on) */
 934                 error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x00);
 935                 device->streaming = enable;
 936         } else {
 937                 /* Set output state off (high impedance means stream off) */
 938                 error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x03);
 939                 if (error)
 940                         v4l2_dbg(1, debug, sd, "Unable to stop streaming\n");
 941
 942                 device->streaming = enable;
 943         }
 944
 945         return error;
 946 }
 947
 948 /*
 949  * tvp7002_log_status() - Print information about register settings
 950  * @sd: ptr to v4l2_subdev struct
 951  *
 952  * Log register values of a TVP7002 decoder device.
 953  * Returns zero or -EINVAL if read operation fails.
 954  */
 955 static int tvp7002_log_status(struct v4l2_subdev *sd)
 956 {
 957         const struct tvp7002_preset_definition *presets = tvp7002_presets;
 958         struct tvp7002 *device = to_tvp7002(sd);
 959         struct v4l2_dv_enum_preset e_preset;
 960         struct v4l2_dv_preset detected;
 961         int i;
 962
 963         detected.preset = V4L2_DV_INVALID;
 964         /* Find my current standard*/
 965         tvp7002_query_dv_preset(sd, &detected);
 966
 967         /* Print standard related code values */
 968         for (i = 0; i < NUM_PRESETS; i++, presets++)
 969                 if (presets->preset == detected.preset)
 970                         break;
 971
 972         if (v4l_fill_dv_preset_info(device->current_preset->preset, &e_preset))
 973                 return -EINVAL;
 974
 975         v4l2_info(sd, "Selected DV Preset: %s\n", e_preset.name);
 976         v4l2_info(sd, "   Pixels per line: %u\n", e_preset.width);
 977         v4l2_info(sd, "   Lines per frame: %u\n\n", e_preset.height);
 978         if (i == NUM_PRESETS) {
 979                 v4l2_info(sd, "Detected DV Preset: None\n");
 980         } else {
 981                 if (v4l_fill_dv_preset_info(presets->preset, &e_preset))
 982                         return -EINVAL;
 983                 v4l2_info(sd, "Detected DV Preset: %s\n", e_preset.name);
 984                 v4l2_info(sd, "  Pixels per line: %u\n", e_preset.width);
 985                 v4l2_info(sd, "  Lines per frame: %u\n\n", e_preset.height);
 986         }
 987         v4l2_info(sd, "Streaming enabled: %s\n",
 988                                         device->streaming ? "yes" : "no");
 989
 990         /* Print the current value of the gain control */
 991         v4l2_info(sd, "Gain: %u\n", device->gain);
 992
 993         return 0;
 994 }
 995
 996 /* V4L2 core operation handlers */
 997 static const struct v4l2_subdev_core_ops tvp7002_core_ops = {
 998         .g_chip_ident = tvp7002_g_chip_ident,
 999         .log_status = tvp7002_log_status,
1000         .g_ctrl = tvp7002_g_ctrl,
1001         .s_ctrl = tvp7002_s_ctrl,
1002         .queryctrl = tvp7002_queryctrl,
1003 #ifdef CONFIG_VIDEO_ADV_DEBUG
1004         .g_register = tvp7002_g_register,
1005         .s_register = tvp7002_s_register,
1006 #endif
1007 };
1008
1009 /* Specific video subsystem operation handlers */
1010 static const struct v4l2_subdev_video_ops tvp7002_video_ops = {
1011         .s_dv_preset = tvp7002_s_dv_preset,
1012         .query_dv_preset = tvp7002_query_dv_preset,
1013         .s_stream = tvp7002_s_stream,
1014         .g_fmt = tvp7002_g_fmt,
1015         .s_fmt = tvp7002_s_fmt,
1016         .enum_fmt = tvp7002_enum_fmt,
1017 };
1018
1019 /* V4L2 top level operation handlers */
1020 static const struct v4l2_subdev_ops tvp7002_ops = {
1021         .core = &tvp7002_core_ops,
1022         .video = &tvp7002_video_ops,
1023 };
1024
1025 static struct tvp7002 tvp7002_dev = {
1026         .streaming = 0,
1027
1028         .pix = {
1029                 .width = 1280,
1030                 .height = 720,
1031                 .pixelformat = V4L2_PIX_FMT_UYVY,
1032                 .field = V4L2_FIELD_NONE,
1033                 .bytesperline = 1280 * 2,
1034                 .sizeimage = 1280 * 2 * 720,
1035                 .colorspace = V4L2_COLORSPACE_REC709,
1036                 },
1037
1038         .current_preset = tvp7002_presets,
1039         .gain = 0,
1040 };
1041
1042 /*
1043  * tvp7002_probe - Probe a TVP7002 device
1044  * @sd: ptr to v4l2_subdev struct
1045  * @ctrl: ptr to i2c_device_id struct
1046  *
1047  * Initialize the TVP7002 device
1048  * Returns zero when successful, -EINVAL if register read fails or
1049  * -EIO if i2c access is not available.
1050  */
1051 static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
1052 {
1053         struct v4l2_subdev *sd;
1054         struct tvp7002 *device;
1055         struct v4l2_dv_preset preset;
1056         int polarity_a;
1057         int polarity_b;
1058         u8 revision;
1059
1060         int error;
1061
1062         /* Check if the adapter supports the needed features */
1063         if (!i2c_check_functionality(c->adapter,
1064                 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
1065                 return -EIO;
1066
1067         if (!c->dev.platform_data) {
1068                 v4l_err(c, "No platform data!!\n");
1069                 return -ENODEV;
1070         }
1071
1072         device = kmalloc(sizeof(struct tvp7002), GFP_KERNEL);
1073
1074         if (!device)
1075                 return -ENOMEM;
1076
1077         *device = tvp7002_dev;
1078         sd = &device->sd;
1079         device->pdata = c->dev.platform_data;
1080
1081         /* Tell v4l2 the device is ready */
1082         v4l2_i2c_subdev_init(sd, c, &tvp7002_ops);
1083         v4l_info(c, "tvp7002 found @ 0x%02x (%s)\n",
1084                                         c->addr, c->adapter->name);
1085
1086         error = tvp7002_read(sd, TVP7002_CHIP_REV, &revision);
1087         if (error < 0)
1088                 goto found_error;
1089
1090         /* Get revision number */
1091         v4l2_info(sd, "Rev. %02x detected.\n", revision);
1092         if (revision != 0x02)
1093                 v4l2_info(sd, "Unknown revision detected.\n");
1094
1095         /* Initializes TVP7002 to its default values */
1096         error = tvp7002_write_inittab(sd, tvp7002_init_default);
1097
1098         if (error < 0)
1099                 goto found_error;
1100
1101         /* Set polarity information after registers have been set */
1102         polarity_a = 0x20 | device->pdata->hs_polarity << 5
1103                         | device->pdata->vs_polarity << 2;
1104         error = tvp7002_write(sd, TVP7002_SYNC_CTL_1, polarity_a);
1105         if (error < 0)
1106                 goto found_error;
1107
1108         polarity_b = 0x01  | device->pdata->fid_polarity << 2
1109                         | device->pdata->sog_polarity << 1
1110                         | device->pdata->clk_polarity;
1111         error = tvp7002_write(sd, TVP7002_MISC_CTL_3, polarity_b);
1112         if (error < 0)
1113                 goto found_error;
1114
1115         /* Set registers according to default video mode */
1116         preset.preset = device->current_preset->preset;
1117         error = tvp7002_s_dv_preset(sd, &preset);
1118
1119 found_error:
1120         if (error < 0)
1121                 kfree(device);
1122
1123         return error;
1124 }
1125
1126 /*
1127  * tvp7002_remove - Remove TVP7002 device support
1128  * @c: ptr to i2c_client struct
1129  *
1130  * Reset the TVP7002 device
1131  * Returns zero.
1132  */
1133 static int tvp7002_remove(struct i2c_client *c)
1134 {
1135         struct v4l2_subdev *sd = i2c_get_clientdata(c);
1136         struct tvp7002 *device = to_tvp7002(sd);
1137
1138         v4l2_dbg(1, debug, sd, "Removing tvp7002 adapter"
1139                                 "on address 0x%x\n", c->addr);
1140
1141         v4l2_device_unregister_subdev(sd);
1142         kfree(device);
1143         return 0;
1144 }
1145
1146 /* I2C Device ID table */
1147 static const struct i2c_device_id tvp7002_id[] = {
1148         { "tvp7002", 0 },
1149         { }
1150 };
1151 MODULE_DEVICE_TABLE(i2c, tvp7002_id);
1152
1153 /* I2C driver data */
1154 static struct i2c_driver tvp7002_driver = {
1155         .driver = {
1156                 .owner = THIS_MODULE,
1157                 .name = TVP7002_MODULE_NAME,
1158         },
1159         .probe = tvp7002_probe,
1160         .remove = tvp7002_remove,
1161         .id_table = tvp7002_id,
1162 };
1163
1164 /*
1165  * tvp7002_init - Initialize driver via I2C interface
1166  *
1167  * Register the TVP7002 driver.
1168  * Return 0 on success or error code on failure.
1169  */
1170 static int __init tvp7002_init(void)
1171 {
1172         return i2c_add_driver(&tvp7002_driver);
1173 }
1174
1175 /*
1176  * tvp7002_exit - Remove driver via I2C interface
1177  *
1178  * Unregister the TVP7002 driver.
1179  * Returns nothing.
1180  */
1181 static void __exit tvp7002_exit(void)
1182 {
1183         i2c_del_driver(&tvp7002_driver);
1184 }
1185
1186 module_init(tvp7002_init);
1187 module_exit(tvp7002_exit);