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 "tvp7002_reg.h"
  36
  37 MODULE_DESCRIPTION("TI TVP7002 Video and Graphics Digitizer driver");
  38 MODULE_AUTHOR("Santiago Nunez-Corrales <santiago.nunez@ridgerun.com>");
  39 MODULE_LICENSE("GPL");
  40
  41 /* Module Name */
  42 #define TVP7002_MODULE_NAME     "tvp7002"
  43
  44 /* I2C retry attempts */
  45 #define I2C_RETRY_COUNT         (5)
  46
  47 /* End of registers */
  48 #define TVP7002_EOR             0x5c
  49
  50 /* Read write definition for registers */
  51 #define TVP7002_READ            0
  52 #define TVP7002_WRITE           1
  53 #define TVP7002_RESERVED        2
  54
  55 /* Interlaced vs progressive mask and shift */
  56 #define TVP7002_IP_SHIFT        5
  57 #define TVP7002_INPR_MASK       (0x01 << TVP7002_IP_SHIFT)
  58
  59 /* Shift for CPL and LPF registers */
  60 #define TVP7002_CL_SHIFT        8
  61 #define TVP7002_CL_MASK         0x0f
  62
  63 /* Debug functions */
  64 static int debug;
  65 module_param(debug, bool, 0644);
  66 MODULE_PARM_DESC(debug, "Debug level (0-2)");
  67
  68 /* Structure for register values */
  69 struct i2c_reg_value {
  70         u8 reg;
  71         u8 value;
  72         u8 type;
  73 };
  74
  75 /*
  76  * Register default values (according to tvp7002 datasheet)
  77  * In the case of read-only registers, the value (0xff) is
  78  * never written. R/W functionality is controlled by the
  79  * writable bit in the register struct definition.
  80  */
  81 static const struct i2c_reg_value tvp7002_init_default[] = {
  82         { TVP7002_CHIP_REV, 0xff, TVP7002_READ },
  83         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
  84         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
  85         { TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
  86         { TVP7002_HPLL_PHASE_SEL, 0x80, TVP7002_WRITE },
  87         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
  88         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
  89         { TVP7002_HSYNC_OUT_W, 0x60, TVP7002_WRITE },
  90         { TVP7002_B_FINE_GAIN, 0x00, TVP7002_WRITE },
  91         { TVP7002_G_FINE_GAIN, 0x00, TVP7002_WRITE },
  92         { TVP7002_R_FINE_GAIN, 0x00, TVP7002_WRITE },
  93         { TVP7002_B_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  94         { TVP7002_G_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  95         { TVP7002_R_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
  96         { TVP7002_SYNC_CTL_1, 0x20, TVP7002_WRITE },
  97         { TVP7002_HPLL_AND_CLAMP_CTL, 0x2e, TVP7002_WRITE },
  98         { TVP7002_SYNC_ON_G_THRS, 0x5d, TVP7002_WRITE },
  99         { TVP7002_SYNC_SEPARATOR_THRS, 0x47, TVP7002_WRITE },
 100         { TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
 101         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 102         { TVP7002_SYNC_DETECT_STAT, 0xff, TVP7002_READ },
 103         { TVP7002_OUT_FORMATTER, 0x47, TVP7002_WRITE },
 104         { TVP7002_MISC_CTL_1, 0x01, TVP7002_WRITE },
 105         { TVP7002_MISC_CTL_2, 0x00, TVP7002_WRITE },
 106         { TVP7002_MISC_CTL_3, 0x01, TVP7002_WRITE },
 107         { TVP7002_IN_MUX_SEL_1, 0x00, TVP7002_WRITE },
 108         { TVP7002_IN_MUX_SEL_2, 0x67, TVP7002_WRITE },
 109         { TVP7002_B_AND_G_COARSE_GAIN, 0x77, TVP7002_WRITE },
 110         { TVP7002_R_COARSE_GAIN, 0x07, TVP7002_WRITE },
 111         { TVP7002_FINE_OFF_LSBS, 0x00, TVP7002_WRITE },
 112         { TVP7002_B_COARSE_OFF, 0x10, TVP7002_WRITE },
 113         { TVP7002_G_COARSE_OFF, 0x10, TVP7002_WRITE },
 114         { TVP7002_R_COARSE_OFF, 0x10, TVP7002_WRITE },
 115         { TVP7002_HSOUT_OUT_START, 0x08, TVP7002_WRITE },
 116         { TVP7002_MISC_CTL_4, 0x00, TVP7002_WRITE },
 117         { TVP7002_B_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 118         { TVP7002_G_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 119         { TVP7002_R_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
 120         { TVP7002_AUTO_LVL_CTL_ENABLE, 0x80, TVP7002_WRITE },
 121         { TVP7002_DGTL_ALC_OUT_MSBS, 0xff, TVP7002_READ },
 122         { TVP7002_AUTO_LVL_CTL_FILTER, 0x53, TVP7002_WRITE },
 123         { 0x29, 0x08, TVP7002_RESERVED },
 124         { TVP7002_FINE_CLAMP_CTL, 0x07, TVP7002_WRITE },
 125         /* PWR_CTL is controlled only by the probe and reset functions */
 126         { TVP7002_PWR_CTL, 0x00, TVP7002_RESERVED },
 127         { TVP7002_ADC_SETUP, 0x50, TVP7002_WRITE },
 128         { TVP7002_COARSE_CLAMP_CTL, 0x00, TVP7002_WRITE },
 129         { TVP7002_SOG_CLAMP, 0x80, TVP7002_WRITE },
 130         { TVP7002_RGB_COARSE_CLAMP_CTL, 0x00, TVP7002_WRITE },
 131         { TVP7002_SOG_COARSE_CLAMP_CTL, 0x04, TVP7002_WRITE },
 132         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 133         { 0x32, 0x18, TVP7002_RESERVED },
 134         { 0x33, 0x60, TVP7002_RESERVED },
 135         { TVP7002_MVIS_STRIPPER_W, 0xff, TVP7002_RESERVED },
 136         { TVP7002_VSYNC_ALGN, 0x10, TVP7002_WRITE },
 137         { TVP7002_SYNC_BYPASS, 0x00, TVP7002_WRITE },
 138         { TVP7002_L_FRAME_STAT_LSBS, 0xff, TVP7002_READ },
 139         { TVP7002_L_FRAME_STAT_MSBS, 0xff, TVP7002_READ },
 140         { TVP7002_CLK_L_STAT_LSBS, 0xff, TVP7002_READ },
 141         { TVP7002_CLK_L_STAT_MSBS, 0xff, TVP7002_READ },
 142         { TVP7002_HSYNC_W, 0xff, TVP7002_READ },
 143         { TVP7002_VSYNC_W, 0xff, TVP7002_READ },
 144         { TVP7002_L_LENGTH_TOL, 0x03, TVP7002_WRITE },
 145         { 0x3e, 0x60, TVP7002_RESERVED },
 146         { TVP7002_VIDEO_BWTH_CTL, 0x01, TVP7002_WRITE },
 147         { TVP7002_AVID_START_PIXEL_LSBS, 0x01, TVP7002_WRITE },
 148         { TVP7002_AVID_START_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
 149         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 150         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
 151         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 152         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 153         { TVP7002_VBLK_F_0_DURATION, 0x1e, TVP7002_WRITE },
 154         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 155         { TVP7002_FBIT_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
 156         { TVP7002_FBIT_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 157         { TVP7002_YUV_Y_G_COEF_LSBS, 0xe3, TVP7002_WRITE },
 158         { TVP7002_YUV_Y_G_COEF_MSBS, 0x16, TVP7002_WRITE },
 159         { TVP7002_YUV_Y_B_COEF_LSBS, 0x4f, TVP7002_WRITE },
 160         { TVP7002_YUV_Y_B_COEF_MSBS, 0x02, TVP7002_WRITE },
 161         { TVP7002_YUV_Y_R_COEF_LSBS, 0xce, TVP7002_WRITE },
 162         { TVP7002_YUV_Y_R_COEF_MSBS, 0x06, TVP7002_WRITE },
 163         { TVP7002_YUV_U_G_COEF_LSBS, 0xab, TVP7002_WRITE },
 164         { TVP7002_YUV_U_G_COEF_MSBS, 0xf3, TVP7002_WRITE },
 165         { TVP7002_YUV_U_B_COEF_LSBS, 0x00, TVP7002_WRITE },
 166         { TVP7002_YUV_U_B_COEF_MSBS, 0x10, TVP7002_WRITE },
 167         { TVP7002_YUV_U_R_COEF_LSBS, 0x55, TVP7002_WRITE },
 168         { TVP7002_YUV_U_R_COEF_MSBS, 0xfc, TVP7002_WRITE },
 169         { TVP7002_YUV_V_G_COEF_LSBS, 0x78, TVP7002_WRITE },
 170         { TVP7002_YUV_V_G_COEF_MSBS, 0xf1, TVP7002_WRITE },
 171         { TVP7002_YUV_V_B_COEF_LSBS, 0x88, TVP7002_WRITE },
 172         { TVP7002_YUV_V_B_COEF_MSBS, 0xfe, TVP7002_WRITE },
 173         { TVP7002_YUV_V_R_COEF_LSBS, 0x00, TVP7002_WRITE },
 174         { TVP7002_YUV_V_R_COEF_MSBS, 0x10, TVP7002_WRITE },
 175         /* This signals end of register values */
 176         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 177 };
 178
 179 /* Register parameters for 480P */
 180 static const struct i2c_reg_value tvp7002_parms_480P[] = {
 181         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x35, TVP7002_WRITE },
 182         { TVP7002_HPLL_FDBK_DIV_LSBS, 0xa0, TVP7002_WRITE },
 183         { TVP7002_HPLL_CRTL, 0x02, TVP7002_WRITE },
 184         { TVP7002_HPLL_PHASE_SEL, 0x14, 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_HPLL_PHASE_SEL, 0x14, TVP7002_WRITE },
 207         { TVP7002_AVID_START_PIXEL_LSBS, 0x9B, TVP7002_WRITE },
 208         { TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 209         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x0F, TVP7002_WRITE },
 210         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
 211         { TVP7002_VBLK_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
 212         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 213         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 214         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 215         { TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
 216         { TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
 217         { TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
 218         { TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
 219         { TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
 220         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 221 };
 222
 223 /* Register parameters for 1080I60 */
 224 static const struct i2c_reg_value tvp7002_parms_1080I60[] = {
 225         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
 226         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
 227         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 228         { TVP7002_HPLL_PHASE_SEL, 0x14, TVP7002_WRITE },
 229         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 230         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 231         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 232         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 233         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 234         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 235         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 236         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 237         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 238         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 239         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 240         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 241         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 242         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 243 };
 244
 245 /* Register parameters for 1080P60 */
 246 static const struct i2c_reg_value tvp7002_parms_1080P60[] = {
 247         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
 248         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
 249         { TVP7002_HPLL_CRTL, 0xE0, TVP7002_WRITE },
 250         { TVP7002_HPLL_PHASE_SEL, 0x14, TVP7002_WRITE },
 251         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 252         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 253         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 254         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 255         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 256         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 257         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 258         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 259         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 260         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 261         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 262         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 263         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 264         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 265 };
 266
 267 /* Register parameters for 1080I50 */
 268 static const struct i2c_reg_value tvp7002_parms_1080I50[] = {
 269         { TVP7002_HPLL_FDBK_DIV_MSBS, 0xa5, TVP7002_WRITE },
 270         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
 271         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 272         { TVP7002_HPLL_PHASE_SEL, 0x14, TVP7002_WRITE },
 273         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
 274         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 275         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
 276         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
 277         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
 278         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
 279         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
 280         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
 281         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 282         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 283         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 284         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 285         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 286         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 287 };
 288
 289 /* Register parameters for 720P60 */
 290 static const struct i2c_reg_value tvp7002_parms_720P60[] = {
 291         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
 292         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
 293         { TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
 294         { TVP7002_HPLL_PHASE_SEL, 0x16, TVP7002_WRITE },
 295         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
 296         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 297         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
 298         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
 299         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 300         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 301         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 302         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 303         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 304         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 305         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 306         { TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
 307         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 308         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 309 };
 310
 311 /* Register parameters for 720P50 */
 312 static const struct i2c_reg_value tvp7002_parms_720P50[] = {
 313         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x7b, TVP7002_WRITE },
 314         { TVP7002_HPLL_FDBK_DIV_LSBS, 0xc0, TVP7002_WRITE },
 315         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
 316         { TVP7002_HPLL_PHASE_SEL, 0x16, TVP7002_WRITE },
 317         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
 318         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
 319         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
 320         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
 321         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
 322         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
 323         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
 324         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
 325         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
 326         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
 327         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
 328         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
 329         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
 330         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
 331 };
 332
 333 /* Struct list for available formats */
 334 static const struct v4l2_fmtdesc tvp7002_fmt_list[] = {
 335         {
 336          .index = 0,
 337          .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
 338          .flags = 0,
 339          .description = "8-bit UYVY 4:2:2 Format",
 340          .pixelformat = V4L2_PIX_FMT_UYVY,
 341         },
 342 };
 343
 344 #define NUM_FORMATS             ARRAY_SIZE(tvp7002_fmt_list)
 345
 346 /* Preset definition for handling device operation */
 347 struct tvp7002_preset_definition {
 348         u32 preset;
 349         const struct i2c_reg_value *p_settings;
 350         enum v4l2_colorspace color_space;
 351         enum v4l2_field scanmode;
 352         u16 progressive;
 353         u16 lines_per_frame;
 354         u16 cpl_min;
 355         u16 cpl_max;
 356 };
 357
 358 /* Struct list for digital video presets */
 359 static const struct tvp7002_preset_definition tvp7002_presets[] = {
 360         {
 361                 V4L2_DV_720P60,
 362                 tvp7002_parms_720P60,
 363                 V4L2_COLORSPACE_REC709,
 364                 V4L2_FIELD_NONE,
 365                 1,
 366                 0x2EE,
 367                 135,
 368                 153
 369         },
 370         {
 371                 V4L2_DV_1080I60,
 372                 tvp7002_parms_1080I60,
 373                 V4L2_COLORSPACE_REC709,
 374                 V4L2_FIELD_INTERLACED,
 375                 0,
 376                 0x465,
 377                 181,
 378                 205
 379         },
 380         {
 381                 V4L2_DV_1080I50,
 382                 tvp7002_parms_1080I50,
 383                 V4L2_COLORSPACE_REC709,
 384                 V4L2_FIELD_INTERLACED,
 385                 0,
 386                 0x465,
 387                 217,
 388                 245
 389         },
 390         {
 391                 V4L2_DV_720P50,
 392                 tvp7002_parms_720P50,
 393                 V4L2_COLORSPACE_REC709,
 394                 V4L2_FIELD_NONE,
 395                 1,
 396                 0x2EE,
 397                 163,
 398                 183
 399         },
 400         {
 401                 V4L2_DV_1080P60,
 402                 tvp7002_parms_1080P60,
 403                 V4L2_COLORSPACE_REC709,
 404                 V4L2_FIELD_NONE,
 405                 1,
 406                 0x465,
 407                 90,
 408                 102
 409         },
 410         {
 411                 V4L2_DV_480P59_94,
 412                 tvp7002_parms_480P,
 413                 V4L2_COLORSPACE_SMPTE170M,
 414                 V4L2_FIELD_NONE,
 415                 1,
 416                 0x20D,
 417                 0xffff,
 418                 0xffff
 419         },
 420         {
 421                 V4L2_DV_576P50,
 422                 tvp7002_parms_576P,
 423                 V4L2_COLORSPACE_SMPTE170M,
 424                 V4L2_FIELD_NONE,
 425                 1,
 426                 0x271,
 427                 0xffff,
 428                 0xffff
 429         }
 430 };
 431
 432 #define NUM_PRESETS     ARRAY_SIZE(tvp7002_presets)
 433
 434 /* Device definition */
 435 struct tvp7002 {
 436         struct v4l2_subdev sd;
 437         const struct tvp7002_config *pdata;
 438
 439         int ver;
 440         int streaming;
 441
 442         struct v4l2_pix_format pix;
 443         const struct tvp7002_preset_definition *current_preset;
 444         u8 gain;
 445 };
 446
 447 /*
 448  * to_tvp7002 - Obtain device handler TVP7002
 449  * @sd: ptr to v4l2_subdev struct
 450  *
 451  * Returns device handler tvp7002.
 452  */
 453 static inline struct tvp7002 *to_tvp7002(struct v4l2_subdev *sd)
 454 {
 455         return container_of(sd, struct tvp7002, sd);
 456 }
 457
 458 /*
 459  * tvp7002_read - Read a value from a register in an TVP7002
 460  * @sd: ptr to v4l2_subdev struct
 461  * @addr: TVP7002 register address
 462  * @dst: pointer to 8-bit destination
 463  *
 464  * Returns value read if successful, or non-zero (-1) otherwise.
 465  */
 466 static int tvp7002_read(struct v4l2_subdev *sd, u8 addr, u8 *dst)
 467 {
 468         struct i2c_client *c = v4l2_get_subdevdata(sd);
 469         int retry;
 470         int error;
 471
 472         for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
 473                 error = i2c_smbus_read_byte_data(c, addr);
 474
 475                 if (error >= 0) {
 476                         *dst = (u8)error;
 477                         return 0;
 478                 }
 479
 480                 msleep_interruptible(10);
 481         }
 482         v4l2_err(sd, "TVP7002 read error %d\n", error);
 483         return error;
 484 }
 485
 486 /*
 487  * tvp7002_read_err() - Read a register value with error code
 488  * @sd: pointer to standard V4L2 sub-device structure
 489  * @reg: destination register
 490  * @val: value to be read
 491  * @err: pointer to error value
 492  *
 493  * Read a value in a register and save error value in pointer.
 494  * Also update the register table if successful
 495  */
 496 static inline void tvp7002_read_err(struct v4l2_subdev *sd, u8 reg,
 497                                                         u8 *dst, int *err)
 498 {
 499         if (!*err)
 500                 *err = tvp7002_read(sd, reg, dst);
 501 }
 502
 503 /*
 504  * tvp7002_write() - Write a value to a register in TVP7002
 505  * @sd: ptr to v4l2_subdev struct
 506  * @addr: TVP7002 register address
 507  * @value: value to be written to the register
 508  *
 509  * Write a value to a register in an TVP7002 decoder device.
 510  * Returns zero if successful, or non-zero otherwise.
 511  */
 512 static int tvp7002_write(struct v4l2_subdev *sd, u8 addr, u8 value)
 513 {
 514         struct i2c_client *c;
 515         int retry;
 516         int error;
 517
 518         c = v4l2_get_subdevdata(sd);
 519
 520         for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
 521                 error = i2c_smbus_write_byte_data(c, addr, value);
 522
 523                 if (error >= 0)
 524                         return 0;
 525
 526                 v4l2_warn(sd, "Write: retry ... %d\n", retry);
 527                 msleep_interruptible(10);
 528         }
 529         v4l2_err(sd, "TVP7002 write error %d\n", error);
 530         return error;
 531 }
 532
 533 /*
 534  * tvp7002_write_err() - Write a register value with error code
 535  * @sd: pointer to standard V4L2 sub-device structure
 536  * @reg: destination register
 537  * @val: value to be written
 538  * @err: pointer to error value
 539  *
 540  * Write a value in a register and save error value in pointer.
 541  * Also update the register table if successful
 542  */
 543 static inline void tvp7002_write_err(struct v4l2_subdev *sd, u8 reg,
 544                                                         u8 val, int *err)
 545 {
 546         if (!*err)
 547                 *err = tvp7002_write(sd, reg, val);
 548 }
 549
 550 /*
 551  * tvp7002_g_chip_ident() - Get chip identification number
 552  * @sd: ptr to v4l2_subdev struct
 553  * @chip: ptr to v4l2_dbg_chip_ident struct
 554  *
 555  * Obtains the chip's identification number.
 556  * Returns zero or -EINVAL if read operation fails.
 557  */
 558 static int tvp7002_g_chip_ident(struct v4l2_subdev *sd,
 559                                         struct v4l2_dbg_chip_ident *chip)
 560 {
 561         u8 rev;
 562         int error;
 563         struct i2c_client *client = v4l2_get_subdevdata(sd);
 564
 565         error = tvp7002_read(sd, TVP7002_CHIP_REV, &rev);
 566
 567         if (error < 0)
 568                 return error;
 569
 570         return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_TVP7002, rev);
 571 }
 572
 573 /*
 574  * tvp7002_write_inittab() - Write initialization values
 575  * @sd: ptr to v4l2_subdev struct
 576  * @regs: ptr to i2c_reg_value struct
 577  *
 578  * Write initialization values.
 579  * Returns zero or -EINVAL if read operation fails.
 580  */
 581 static int tvp7002_write_inittab(struct v4l2_subdev *sd,
 582                                         const struct i2c_reg_value *regs)
 583 {
 584         int error = 0;
 585
 586         /* Initialize the first (defined) registers */
 587         while (TVP7002_EOR != regs->reg) {
 588                 if (TVP7002_WRITE == regs->type)
 589                         tvp7002_write_err(sd, regs->reg, regs->value, &error);
 590                 regs++;
 591         }
 592
 593         return error;
 594 }
 595
 596 /*
 597  * tvp7002_s_dv_preset() - Set digital video preset
 598  * @sd: ptr to v4l2_subdev struct
 599  * @dv_preset: ptr to v4l2_dv_preset struct
 600  *
 601  * Set the digital video preset for a TVP7002 decoder device.
 602  * Returns zero when successful or -EINVAL if register access fails.
 603  */
 604 static int tvp7002_s_dv_preset(struct v4l2_subdev *sd,
 605                                         struct v4l2_dv_preset *dv_preset)
 606 {
 607         struct tvp7002 *device = to_tvp7002(sd);
 608         u32 preset;
 609         int i;
 610
 611         for (i = 0; i < NUM_PRESETS; i++) {
 612                 preset = tvp7002_presets[i].preset;
 613                 if (preset == dv_preset->preset) {
 614                         device->current_preset = &tvp7002_presets[i];
 615                         return tvp7002_write_inittab(sd, tvp7002_presets[i].p_settings);
 616                 }
 617         }
 618
 619         return -EINVAL;
 620 }
 621
 622 /*
 623  * tvp7002_g_ctrl() - Get a control
 624  * @sd: ptr to v4l2_subdev struct
 625  * @ctrl: ptr to v4l2_control struct
 626  *
 627  * Get a control for a TVP7002 decoder device.
 628  * Returns zero when successful or -EINVAL if register access fails.
 629  */
 630 static int tvp7002_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 631 {
 632         struct tvp7002 *device = to_tvp7002(sd);
 633
 634         switch (ctrl->id) {
 635         case V4L2_CID_GAIN:
 636                 ctrl->value = device->gain;
 637                 return 0;
 638         default:
 639                 return -EINVAL;
 640         }
 641 }
 642
 643 /*
 644  * tvp7002_s_ctrl() - Set a control
 645  * @sd: ptr to v4l2_subdev struct
 646  * @ctrl: ptr to v4l2_control struct
 647  *
 648  * Set a control in TVP7002 decoder device.
 649  * Returns zero when successful or -EINVAL if register access fails.
 650  */
 651 static int tvp7002_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 652 {
 653         struct tvp7002 *device = to_tvp7002(sd);
 654         int error = 0;
 655
 656         switch (ctrl->id) {
 657         case V4L2_CID_GAIN:
 658                 tvp7002_write_err(sd, TVP7002_R_FINE_GAIN,
 659                                                 ctrl->value & 0xff, &error);
 660                 tvp7002_write_err(sd, TVP7002_G_FINE_GAIN,
 661                                                 ctrl->value & 0xff, &error);
 662                 tvp7002_write_err(sd, TVP7002_B_FINE_GAIN,
 663                                                 ctrl->value & 0xff, &error);
 664
 665                 if (error < 0)
 666                         return error;
 667
 668                 /* Set only after knowing there is no error */
 669                 device->gain = ctrl->value & 0xff;
 670                 return 0;
 671         default:
 672                 return -EINVAL;
 673         }
 674 }
 675
 676 /*
 677  * tvp7002_queryctrl() - Query a control
 678  * @sd: ptr to v4l2_subdev struct
 679  * @qc: ptr to v4l2_queryctrl struct
 680  *
 681  * Query a control of a TVP7002 decoder device.
 682  * Returns zero when successful or -EINVAL if register read fails.
 683  */
 684 static int tvp7002_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
 685 {
 686         switch (qc->id) {
 687         case V4L2_CID_GAIN:
 688                 /*
 689                  * Gain is supported [0-255, default=0, step=1]
 690                  */
 691                 return v4l2_ctrl_query_fill(qc, 0, 255, 1, 0);
 692         default:
 693                 return -EINVAL;
 694         }
 695 }
 696
 697 /*
 698  * tvp7002_try_fmt_cap() - V4L2 decoder interface handler for try_fmt
 699  * @sd: pointer to standard V4L2 sub-device structure
 700  * @f: pointer to standard V4L2 VIDIOC_TRY_FMT ioctl structure
 701  *
 702  * Implement the VIDIOC_TRY_FMT ioctl for the CAPTURE buffer type. This
 703  * ioctl is used to negotiate the image capture size and pixel format
 704  * without actually making it take effect.
 705  */
 706 static int tvp7002_try_fmt_cap(struct v4l2_subdev *sd, struct v4l2_format *f)
 707 {
 708         struct tvp7002 *device = to_tvp7002(sd);
 709         struct v4l2_dv_enum_preset e_preset;
 710         struct v4l2_pix_format *pix;
 711         int error = 0;
 712
 713         pix = &f->fmt.pix;
 714
 715         /* Calculate height and width based on current standard */
 716         error = v4l_fill_dv_preset_info(device->current_preset->preset, &e_preset);
 717         if (error)
 718                 return -EINVAL;
 719
 720         pix->width = e_preset.width;
 721         pix->height = e_preset.height;
 722         pix->pixelformat = V4L2_PIX_FMT_UYVY;
 723         pix->field = device->current_preset->scanmode;
 724         pix->bytesperline = pix->width * 2;
 725         pix->sizeimage = pix->bytesperline * pix->height;
 726         pix->colorspace = device->current_preset->color_space;
 727         pix->priv = 0;
 728
 729         v4l2_dbg(1, debug, sd, "Try FMT: pixelformat - %s, bytesperline - %d"
 730                         "Width - %d, Height - %d", "8-bit UYVY 4:2:2 Format",
 731                         pix->bytesperline, pix->width, pix->height);
 732         return error;
 733 }
 734
 735 /*
 736  * tvp7002_s_fmt() - V4L2 decoder interface handler for s_fmt
 737  * @sd: pointer to standard V4L2 sub-device structure
 738  * @f: pointer to standard V4L2 VIDIOC_S_FMT ioctl structure
 739  *
 740  * If the requested format is supported, configures the HW to use that
 741  * format, returns error code if format not supported or HW can't be
 742  * correctly configured.
 743  */
 744 static int tvp7002_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
 745 {
 746         struct tvp7002 *decoder = to_tvp7002(sd);
 747         int rval;
 748
 749         rval = tvp7002_try_fmt_cap(sd, f);
 750         if (!rval)
 751                 decoder->pix = f->fmt.pix;
 752         return rval;
 753 }
 754
 755 /*
 756  * tvp7002_g_fmt() - V4L2 decoder interface handler for tvp7002_g_fmt
 757  * @sd: pointer to standard V4L2 sub-device structure
 758  * @f: pointer to standard V4L2 v4l2_format structure
 759  *
 760  * Returns the decoder's current pixel format in the v4l2_format
 761  * parameter.
 762  */
 763 static int tvp7002_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
 764 {
 765         struct tvp7002 *decoder = to_tvp7002(sd);
 766
 767         f->fmt.pix = decoder->pix;
 768
 769         v4l2_dbg(1, debug, sd, "Current FMT: bytesperline - %d"
 770                         "Width - %d, Height - %d",
 771                         decoder->pix.bytesperline,
 772                         decoder->pix.width, decoder->pix.height);
 773         return 0;
 774 }
 775
 776 /*
 777  * tvp7002_query_dv_preset() - query DV preset
 778  * @sd: pointer to standard V4L2 sub-device structure
 779  * @qpreset: standard V4L2 v4l2_dv_preset structure
 780  *
 781  * Returns the current DV preset by TVP7002. If no active input is
 782  * detected, returns -EINVAL
 783  */
 784 static int tvp7002_query_dv_preset(struct v4l2_subdev *sd,
 785                                                 struct v4l2_dv_preset *qpreset)
 786 {
 787         const struct tvp7002_preset_definition *presets = tvp7002_presets;
 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_dbg(1, debug, sd, "detection failed: lpf = %x, cpl = %x\n",
 831                                                                 lpfr, cpln);
 832                 /* Could not detect a signal, so return the 'invalid' preset */
 833                 qpreset->preset = V4L2_DV_INVALID;
 834                 return 0;
 835         }
 836
 837         /* Set values in found preset */
 838         qpreset->preset = presets->preset;
 839
 840         /* Update lines per frame and clocks per line info */
 841         v4l2_dbg(1, debug, sd, "detected preset: %d\n", presets->preset);
 842         return 0;
 843 }
 844
 845 #ifdef CONFIG_VIDEO_ADV_DEBUG
 846 /*
 847  * tvp7002_g_register() - Get the value of a register
 848  * @sd: ptr to v4l2_subdev struct
 849  * @reg: ptr to v4l2_dbg_register struct
 850  *
 851  * Get the value of a TVP7002 decoder device register.
 852  * Returns zero when successful, -EINVAL if register read fails or
 853  * access to I2C client fails, -EPERM if the call is not allowed
 854  * by diabled CAP_SYS_ADMIN.
 855  */
 856 static int tvp7002_g_register(struct v4l2_subdev *sd,
 857                                                 struct v4l2_dbg_register *reg)
 858 {
 859         struct i2c_client *client = v4l2_get_subdevdata(sd);
 860         u8 val;
 861         int ret;
 862
 863         if (!v4l2_chip_match_i2c_client(client, &reg->match))
 864                 return -EINVAL;
 865         if (!capable(CAP_SYS_ADMIN))
 866                 return -EPERM;
 867
 868         ret = tvp7002_read(sd, reg->reg & 0xff, &val);
 869         reg->val = val;
 870         return ret;
 871 }
 872
 873 /*
 874  * tvp7002_s_register() - set a control
 875  * @sd: ptr to v4l2_subdev struct
 876  * @reg: ptr to v4l2_dbg_register struct
 877  *
 878  * Get the value of a TVP7002 decoder device register.
 879  * Returns zero when successful, -EINVAL if register read fails or
 880  * -EPERM if call not allowed.
 881  */
 882 static int tvp7002_s_register(struct v4l2_subdev *sd,
 883                                                 struct v4l2_dbg_register *reg)
 884 {
 885         struct i2c_client *client = v4l2_get_subdevdata(sd);
 886
 887         if (!v4l2_chip_match_i2c_client(client, &reg->match))
 888                 return -EINVAL;
 889         if (!capable(CAP_SYS_ADMIN))
 890                 return -EPERM;
 891
 892         return tvp7002_write(sd, reg->reg & 0xff, reg->val & 0xff);
 893 }
 894 #endif
 895
 896 /*
 897  * tvp7002_enum_fmt() - Enum supported formats
 898  * @sd: pointer to standard V4L2 sub-device structure
 899  * @fmtdesc: pointer to format struct
 900  *
 901  * Enumerate supported formats.
 902  */
 903
 904 static int tvp7002_enum_fmt(struct v4l2_subdev *sd,
 905                                                 struct v4l2_fmtdesc *fmtdesc)
 906 {
 907         /* Check requested format index is within range */
 908         if (fmtdesc->index < 0 || fmtdesc->index >= NUM_FORMATS)
 909                 return -EINVAL;
 910         *fmtdesc = tvp7002_fmt_list[fmtdesc->index];
 911
 912         return 0;
 913 }
 914
 915 /*
 916  * tvp7002_s_stream() - V4L2 decoder i/f handler for s_stream
 917  * @sd: pointer to standard V4L2 sub-device structure
 918  * @enable: streaming enable or disable
 919  *
 920  * Sets streaming to enable or disable, if possible.
 921  */
 922 static int tvp7002_s_stream(struct v4l2_subdev *sd, int enable)
 923 {
 924         struct tvp7002 *device = to_tvp7002(sd);
 925         int error = 0;
 926
 927         if (device->streaming == enable)
 928                 return 0;
 929
 930         if (enable) {
 931                 /* Set output state on (low impedance means stream on) */
 932                 error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x00);
 933                 device->streaming = enable;
 934         } else {
 935                 /* Set output state off (high impedance means stream off) */
 936                 error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x03);
 937                 if (error)
 938                         v4l2_dbg(1, debug, sd, "Unable to stop streaming\n");
 939
 940                 device->streaming = enable;
 941         }
 942
 943         return error;
 944 }
 945
 946 /*
 947  * tvp7002_log_status() - Print information about register settings
 948  * @sd: ptr to v4l2_subdev struct
 949  *
 950  * Log register values of a TVP7002 decoder device.
 951  * Returns zero or -EINVAL if read operation fails.
 952  */
 953 static int tvp7002_log_status(struct v4l2_subdev *sd)
 954 {
 955         const struct tvp7002_preset_definition *presets = tvp7002_presets;
 956         struct tvp7002 *device = to_tvp7002(sd);
 957         struct v4l2_dv_enum_preset e_preset;
 958         struct v4l2_dv_preset detected;
 959         int i;
 960
 961         detected.preset = V4L2_DV_INVALID;
 962         /* Find my current standard*/
 963         tvp7002_query_dv_preset(sd, &detected);
 964
 965         /* Print standard related code values */
 966         for (i = 0; i < NUM_PRESETS; i++, presets++)
 967                 if (presets->preset == detected.preset)
 968                         break;
 969
 970         if (v4l_fill_dv_preset_info(device->current_preset->preset, &e_preset))
 971                 return -EINVAL;
 972
 973         v4l2_info(sd, "Selected DV Preset: %s\n", e_preset.name);
 974         v4l2_info(sd, "   Pixels per line: %u\n", e_preset.width);
 975         v4l2_info(sd, "   Lines per frame: %u\n\n", e_preset.height);
 976         if (i == NUM_PRESETS) {
 977                 v4l2_info(sd, "Detected DV Preset: None\n");
 978         } else {
 979                 if (v4l_fill_dv_preset_info(presets->preset, &e_preset))
 980                         return -EINVAL;
 981                 v4l2_info(sd, "Detected DV Preset: %s\n", e_preset.name);
 982                 v4l2_info(sd, "  Pixels per line: %u\n", e_preset.width);
 983                 v4l2_info(sd, "  Lines per frame: %u\n\n", e_preset.height);
 984         }
 985         v4l2_info(sd, "Streaming enabled: %s\n",
 986                                         device->streaming ? "yes" : "no");
 987
 988         /* Print the current value of the gain control */
 989         v4l2_info(sd, "Gain: %u\n", device->gain);
 990
 991         return 0;
 992 }
 993
 994 /*
 995  * tvp7002_enum_dv_presets() - Enum supported digital video formats
 996  * @sd: pointer to standard V4L2 sub-device structure
 997  * @preset: pointer to format struct
 998  *
 999  * Enumerate supported digital video formats.
1000  */
1001 static int tvp7002_enum_dv_presets(struct v4l2_subdev *sd,
1002                 struct v4l2_dv_enum_preset *preset)
1003 {
1004         /* Check requested format index is within range */
1005         if (preset->index >= NUM_PRESETS)
1006                 return -EINVAL;
1007
1008         return v4l_fill_dv_preset_info(tvp7002_presets[preset->index].preset, preset);
1009 }
1010
1011 /* V4L2 core operation handlers */
1012 static const struct v4l2_subdev_core_ops tvp7002_core_ops = {
1013         .g_chip_ident = tvp7002_g_chip_ident,
1014         .log_status = tvp7002_log_status,
1015         .g_ctrl = tvp7002_g_ctrl,
1016         .s_ctrl = tvp7002_s_ctrl,
1017         .queryctrl = tvp7002_queryctrl,
1018 #ifdef CONFIG_VIDEO_ADV_DEBUG
1019         .g_register = tvp7002_g_register,
1020         .s_register = tvp7002_s_register,
1021 #endif
1022 };
1023
1024 /* Specific video subsystem operation handlers */
1025 static const struct v4l2_subdev_video_ops tvp7002_video_ops = {
1026         .enum_dv_presets = tvp7002_enum_dv_presets,
1027         .s_dv_preset = tvp7002_s_dv_preset,
1028         .query_dv_preset = tvp7002_query_dv_preset,
1029         .s_stream = tvp7002_s_stream,
1030         .g_fmt = tvp7002_g_fmt,
1031         .s_fmt = tvp7002_s_fmt,
1032         .enum_fmt = tvp7002_enum_fmt,
1033 };
1034
1035 /* V4L2 top level operation handlers */
1036 static const struct v4l2_subdev_ops tvp7002_ops = {
1037         .core = &tvp7002_core_ops,
1038         .video = &tvp7002_video_ops,
1039 };
1040
1041 static struct tvp7002 tvp7002_dev = {
1042         .streaming = 0,
1043
1044         .pix = {
1045                 .width = 1280,
1046                 .height = 720,
1047                 .pixelformat = V4L2_PIX_FMT_UYVY,
1048                 .field = V4L2_FIELD_NONE,
1049                 .bytesperline = 1280 * 2,
1050                 .sizeimage = 1280 * 2 * 720,
1051                 .colorspace = V4L2_COLORSPACE_REC709,
1052                 },
1053
1054         .current_preset = tvp7002_presets,
1055         .gain = 0,
1056 };
1057
1058 /*
1059  * tvp7002_probe - Probe a TVP7002 device
1060  * @c: ptr to i2c_client struct
1061  * @id: ptr to i2c_device_id struct
1062  *
1063  * Initialize the TVP7002 device
1064  * Returns zero when successful, -EINVAL if register read fails or
1065  * -EIO if i2c access is not available.
1066  */
1067 static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
1068 {
1069         struct v4l2_subdev *sd;
1070         struct tvp7002 *device;
1071         struct v4l2_dv_preset preset;
1072         int polarity_a;
1073         int polarity_b;
1074         u8 revision;
1075
1076         int error;
1077
1078         /* Check if the adapter supports the needed features */
1079         if (!i2c_check_functionality(c->adapter,
1080                 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
1081                 return -EIO;
1082
1083         if (!c->dev.platform_data) {
1084                 v4l_err(c, "No platform data!!\n");
1085                 return -ENODEV;
1086         }
1087
1088         device = kmalloc(sizeof(struct tvp7002), GFP_KERNEL);
1089
1090         if (!device)
1091                 return -ENOMEM;
1092
1093         *device = tvp7002_dev;
1094         sd = &device->sd;
1095         device->pdata = c->dev.platform_data;
1096
1097         /* Tell v4l2 the device is ready */
1098         v4l2_i2c_subdev_init(sd, c, &tvp7002_ops);
1099         v4l_info(c, "tvp7002 found @ 0x%02x (%s)\n",
1100                                         c->addr, c->adapter->name);
1101
1102         error = tvp7002_read(sd, TVP7002_CHIP_REV, &revision);
1103         if (error < 0)
1104                 goto found_error;
1105
1106         /* Get revision number */
1107         v4l2_info(sd, "Rev. %02x detected.\n", revision);
1108         if (revision != 0x02)
1109                 v4l2_info(sd, "Unknown revision detected.\n");
1110
1111         /* Initializes TVP7002 to its default values */
1112         error = tvp7002_write_inittab(sd, tvp7002_init_default);
1113
1114         if (error < 0)
1115                 goto found_error;
1116
1117         /* Set polarity information after registers have been set */
1118         polarity_a = 0x20 | device->pdata->hs_polarity << 5
1119                         | device->pdata->vs_polarity << 2;
1120         error = tvp7002_write(sd, TVP7002_SYNC_CTL_1, polarity_a);
1121         if (error < 0)
1122                 goto found_error;
1123
1124         polarity_b = 0x01  | device->pdata->fid_polarity << 2
1125                         | device->pdata->sog_polarity << 1
1126                         | device->pdata->clk_polarity;
1127         error = tvp7002_write(sd, TVP7002_MISC_CTL_3, polarity_b);
1128         if (error < 0)
1129                 goto found_error;
1130
1131         /* Set registers according to default video mode */
1132         preset.preset = device->current_preset->preset;
1133         error = tvp7002_s_dv_preset(sd, &preset);
1134
1135 found_error:
1136         if (error < 0)
1137                 kfree(device);
1138
1139         return error;
1140 }
1141
1142 /*
1143  * tvp7002_remove - Remove TVP7002 device support
1144  * @c: ptr to i2c_client struct
1145  *
1146  * Reset the TVP7002 device
1147  * Returns zero.
1148  */
1149 static int tvp7002_remove(struct i2c_client *c)
1150 {
1151         struct v4l2_subdev *sd = i2c_get_clientdata(c);
1152         struct tvp7002 *device = to_tvp7002(sd);
1153
1154         v4l2_dbg(1, debug, sd, "Removing tvp7002 adapter"
1155                                 "on address 0x%x\n", c->addr);
1156
1157         v4l2_device_unregister_subdev(sd);
1158         kfree(device);
1159         return 0;
1160 }
1161
1162 /* I2C Device ID table */
1163 static const struct i2c_device_id tvp7002_id[] = {
1164         { "tvp7002", 0 },
1165         { }
1166 };
1167 MODULE_DEVICE_TABLE(i2c, tvp7002_id);
1168
1169 /* I2C driver data */
1170 static struct i2c_driver tvp7002_driver = {
1171         .driver = {
1172                 .owner = THIS_MODULE,
1173                 .name = TVP7002_MODULE_NAME,
1174         },
1175         .probe = tvp7002_probe,
1176         .remove = tvp7002_remove,
1177         .id_table = tvp7002_id,
1178 };
1179
1180 /*
1181  * tvp7002_init - Initialize driver via I2C interface
1182  *
1183  * Register the TVP7002 driver.
1184  * Return 0 on success or error code on failure.
1185  */
1186 static int __init tvp7002_init(void)
1187 {
1188         return i2c_add_driver(&tvp7002_driver);
1189 }
1190
1191 /*
1192  * tvp7002_exit - Remove driver via I2C interface
1193  *
1194  * Unregister the TVP7002 driver.
1195  * Returns nothing.
1196  */
1197 static void __exit tvp7002_exit(void)
1198 {
1199         i2c_del_driver(&tvp7002_driver);
1200 }
1201
1202 module_init(tvp7002_init);
1203 module_exit(tvp7002_exit);