drivers/media/i2c/saa7127.c

   1 /*
   2  * saa7127 - Philips SAA7127/SAA7129 video encoder driver
   3  *
   4  * Copyright (C) 2003 Roy Bulter <rbulter@hetnet.nl>
   5  *
   6  * Based on SAA7126 video encoder driver by Gillem & Andreas Oberritter
   7  *
   8  * Copyright (C) 2000-2001 Gillem <htoa@gmx.net>
   9  * Copyright (C) 2002 Andreas Oberritter <obi@saftware.de>
  10  *
  11  * Based on Stadis 4:2:2 MPEG-2 Decoder Driver by Nathan Laredo
  12  *
  13  * Copyright (C) 1999 Nathan Laredo <laredo@gnu.org>
  14  *
  15  * This driver is designed for the Hauppauge 250/350 Linux driver
  16  * from the ivtv Project
  17  *
  18  * Copyright (C) 2003 Kevin Thayer <nufan_wfk@yahoo.com>
  19  *
  20  * Dual output support:
  21  * Copyright (C) 2004 Eric Varsanyi
  22  *
  23  * NTSC Tuning and 7.5 IRE Setup
  24  * Copyright (C) 2004  Chris Kennedy <c@groovy.org>
  25  *
  26  * VBI additions & cleanup:
  27  * Copyright (C) 2004, 2005 Hans Verkuil <hverkuil@xs4all.nl>
  28  *
  29  * Note: the saa7126 is identical to the saa7127, and the saa7128 is
  30  * identical to the saa7129, except that the saa7126 and saa7128 have
  31  * macrovision anti-taping support. This driver will almost certainly
  32  * work fine for those chips, except of course for the missing anti-taping
  33  * support.
  34  *
  35  * This program is free software; you can redistribute it and/or modify
  36  * it under the terms of the GNU General Public License as published by
  37  * the Free Software Foundation; either version 2 of the License, or
  38  * (at your option) any later version.
  39  *
  40  * This program is distributed in the hope that it will be useful,
  41  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  42  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  43  * GNU General Public License for more details.
  44  */
  45
  46
  47 #include <linux/kernel.h>
  48 #include <linux/module.h>
  49 #include <linux/slab.h>
  50 #include <linux/i2c.h>
  51 #include <linux/videodev2.h>
  52 #include <media/v4l2-device.h>
  53 #include <media/i2c/saa7127.h>
  54
  55 static int debug;
  56 static int test_image;
  57
  58 MODULE_DESCRIPTION("Philips SAA7127/9 video encoder driver");
  59 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil");
  60 MODULE_LICENSE("GPL");
  61 module_param(debug, int, 0644);
  62 module_param(test_image, int, 0644);
  63 MODULE_PARM_DESC(debug, "debug level (0-2)");
  64 MODULE_PARM_DESC(test_image, "test_image (0-1)");
  65
  66
  67 /*
  68  * SAA7127 registers
  69  */
  70
  71 #define SAA7127_REG_STATUS                           0x00
  72 #define SAA7127_REG_WIDESCREEN_CONFIG                0x26
  73 #define SAA7127_REG_WIDESCREEN_ENABLE                0x27
  74 #define SAA7127_REG_BURST_START                      0x28
  75 #define SAA7127_REG_BURST_END                        0x29
  76 #define SAA7127_REG_COPYGEN_0                        0x2a
  77 #define SAA7127_REG_COPYGEN_1                        0x2b
  78 #define SAA7127_REG_COPYGEN_2                        0x2c
  79 #define SAA7127_REG_OUTPUT_PORT_CONTROL              0x2d
  80 #define SAA7127_REG_GAIN_LUMINANCE_RGB               0x38
  81 #define SAA7127_REG_GAIN_COLORDIFF_RGB               0x39
  82 #define SAA7127_REG_INPUT_PORT_CONTROL_1             0x3a
  83 #define SAA7129_REG_FADE_KEY_COL2                    0x4f
  84 #define SAA7127_REG_CHROMA_PHASE                     0x5a
  85 #define SAA7127_REG_GAINU                            0x5b
  86 #define SAA7127_REG_GAINV                            0x5c
  87 #define SAA7127_REG_BLACK_LEVEL                      0x5d
  88 #define SAA7127_REG_BLANKING_LEVEL                   0x5e
  89 #define SAA7127_REG_VBI_BLANKING                     0x5f
  90 #define SAA7127_REG_DAC_CONTROL                      0x61
  91 #define SAA7127_REG_BURST_AMP                        0x62
  92 #define SAA7127_REG_SUBC3                            0x63
  93 #define SAA7127_REG_SUBC2                            0x64
  94 #define SAA7127_REG_SUBC1                            0x65
  95 #define SAA7127_REG_SUBC0                            0x66
  96 #define SAA7127_REG_LINE_21_ODD_0                    0x67
  97 #define SAA7127_REG_LINE_21_ODD_1                    0x68
  98 #define SAA7127_REG_LINE_21_EVEN_0                   0x69
  99 #define SAA7127_REG_LINE_21_EVEN_1                   0x6a
 100 #define SAA7127_REG_RCV_PORT_CONTROL                 0x6b
 101 #define SAA7127_REG_VTRIG                            0x6c
 102 #define SAA7127_REG_HTRIG_HI                         0x6d
 103 #define SAA7127_REG_MULTI                            0x6e
 104 #define SAA7127_REG_CLOSED_CAPTION                   0x6f
 105 #define SAA7127_REG_RCV2_OUTPUT_START                0x70
 106 #define SAA7127_REG_RCV2_OUTPUT_END                  0x71
 107 #define SAA7127_REG_RCV2_OUTPUT_MSBS                 0x72
 108 #define SAA7127_REG_TTX_REQUEST_H_START              0x73
 109 #define SAA7127_REG_TTX_REQUEST_H_DELAY_LENGTH       0x74
 110 #define SAA7127_REG_CSYNC_ADVANCE_VSYNC_SHIFT        0x75
 111 #define SAA7127_REG_TTX_ODD_REQ_VERT_START           0x76
 112 #define SAA7127_REG_TTX_ODD_REQ_VERT_END             0x77
 113 #define SAA7127_REG_TTX_EVEN_REQ_VERT_START          0x78
 114 #define SAA7127_REG_TTX_EVEN_REQ_VERT_END            0x79
 115 #define SAA7127_REG_FIRST_ACTIVE                     0x7a
 116 #define SAA7127_REG_LAST_ACTIVE                      0x7b
 117 #define SAA7127_REG_MSB_VERTICAL                     0x7c
 118 #define SAA7127_REG_DISABLE_TTX_LINE_LO_0            0x7e
 119 #define SAA7127_REG_DISABLE_TTX_LINE_LO_1            0x7f
 120
 121 /*
 122  **********************************************************************
 123  *
 124  *  Arrays with configuration parameters for the SAA7127
 125  *
 126  **********************************************************************
 127  */
 128
 129 struct i2c_reg_value {
 130         unsigned char reg;
 131         unsigned char value;
 132 };
 133
 134 static const struct i2c_reg_value saa7129_init_config_extra[] = {
 135         { SAA7127_REG_OUTPUT_PORT_CONTROL,              0x38 },
 136         { SAA7127_REG_VTRIG,                            0xfa },
 137         { 0, 0 }
 138 };
 139
 140 static const struct i2c_reg_value saa7127_init_config_common[] = {
 141         { SAA7127_REG_WIDESCREEN_CONFIG,                0x0d },
 142         { SAA7127_REG_WIDESCREEN_ENABLE,                0x00 },
 143         { SAA7127_REG_COPYGEN_0,                        0x77 },
 144         { SAA7127_REG_COPYGEN_1,                        0x41 },
 145         { SAA7127_REG_COPYGEN_2,                        0x00 }, /* Macrovision enable/disable */
 146         { SAA7127_REG_OUTPUT_PORT_CONTROL,              0xbf },
 147         { SAA7127_REG_GAIN_LUMINANCE_RGB,               0x00 },
 148         { SAA7127_REG_GAIN_COLORDIFF_RGB,               0x00 },
 149         { SAA7127_REG_INPUT_PORT_CONTROL_1,             0x80 }, /* for color bars */
 150         { SAA7127_REG_LINE_21_ODD_0,                    0x77 },
 151         { SAA7127_REG_LINE_21_ODD_1,                    0x41 },
 152         { SAA7127_REG_LINE_21_EVEN_0,                   0x88 },
 153         { SAA7127_REG_LINE_21_EVEN_1,                   0x41 },
 154         { SAA7127_REG_RCV_PORT_CONTROL,                 0x12 },
 155         { SAA7127_REG_VTRIG,                            0xf9 },
 156         { SAA7127_REG_HTRIG_HI,                         0x00 },
 157         { SAA7127_REG_RCV2_OUTPUT_START,                0x41 },
 158         { SAA7127_REG_RCV2_OUTPUT_END,                  0xc3 },
 159         { SAA7127_REG_RCV2_OUTPUT_MSBS,                 0x00 },
 160         { SAA7127_REG_TTX_REQUEST_H_START,              0x3e },
 161         { SAA7127_REG_TTX_REQUEST_H_DELAY_LENGTH,       0xb8 },
 162         { SAA7127_REG_CSYNC_ADVANCE_VSYNC_SHIFT,        0x03 },
 163         { SAA7127_REG_TTX_ODD_REQ_VERT_START,           0x15 },
 164         { SAA7127_REG_TTX_ODD_REQ_VERT_END,             0x16 },
 165         { SAA7127_REG_TTX_EVEN_REQ_VERT_START,          0x15 },
 166         { SAA7127_REG_TTX_EVEN_REQ_VERT_END,            0x16 },
 167         { SAA7127_REG_FIRST_ACTIVE,                     0x1a },
 168         { SAA7127_REG_LAST_ACTIVE,                      0x01 },
 169         { SAA7127_REG_MSB_VERTICAL,                     0xc0 },
 170         { SAA7127_REG_DISABLE_TTX_LINE_LO_0,            0x00 },
 171         { SAA7127_REG_DISABLE_TTX_LINE_LO_1,            0x00 },
 172         { 0, 0 }
 173 };
 174
 175 #define SAA7127_60HZ_DAC_CONTROL 0x15
 176 static const struct i2c_reg_value saa7127_init_config_60hz[] = {
 177         { SAA7127_REG_BURST_START,                      0x19 },
 178         /* BURST_END is also used as a chip ID in saa7127_probe */
 179         { SAA7127_REG_BURST_END,                        0x1d },
 180         { SAA7127_REG_CHROMA_PHASE,                     0xa3 },
 181         { SAA7127_REG_GAINU,                            0x98 },
 182         { SAA7127_REG_GAINV,                            0xd3 },
 183         { SAA7127_REG_BLACK_LEVEL,                      0x39 },
 184         { SAA7127_REG_BLANKING_LEVEL,                   0x2e },
 185         { SAA7127_REG_VBI_BLANKING,                     0x2e },
 186         { SAA7127_REG_DAC_CONTROL,                      0x15 },
 187         { SAA7127_REG_BURST_AMP,                        0x4d },
 188         { SAA7127_REG_SUBC3,                            0x1f },
 189         { SAA7127_REG_SUBC2,                            0x7c },
 190         { SAA7127_REG_SUBC1,                            0xf0 },
 191         { SAA7127_REG_SUBC0,                            0x21 },
 192         { SAA7127_REG_MULTI,                            0x90 },
 193         { SAA7127_REG_CLOSED_CAPTION,                   0x11 },
 194         { 0, 0 }
 195 };
 196
 197 #define SAA7127_50HZ_PAL_DAC_CONTROL 0x02
 198 static struct i2c_reg_value saa7127_init_config_50hz_pal[] = {
 199         { SAA7127_REG_BURST_START,                      0x21 },
 200         /* BURST_END is also used as a chip ID in saa7127_probe */
 201         { SAA7127_REG_BURST_END,                        0x1d },
 202         { SAA7127_REG_CHROMA_PHASE,                     0x3f },
 203         { SAA7127_REG_GAINU,                            0x7d },
 204         { SAA7127_REG_GAINV,                            0xaf },
 205         { SAA7127_REG_BLACK_LEVEL,                      0x33 },
 206         { SAA7127_REG_BLANKING_LEVEL,                   0x35 },
 207         { SAA7127_REG_VBI_BLANKING,                     0x35 },
 208         { SAA7127_REG_DAC_CONTROL,                      0x02 },
 209         { SAA7127_REG_BURST_AMP,                        0x2f },
 210         { SAA7127_REG_SUBC3,                            0xcb },
 211         { SAA7127_REG_SUBC2,                            0x8a },
 212         { SAA7127_REG_SUBC1,                            0x09 },
 213         { SAA7127_REG_SUBC0,                            0x2a },
 214         { SAA7127_REG_MULTI,                            0xa0 },
 215         { SAA7127_REG_CLOSED_CAPTION,                   0x00 },
 216         { 0, 0 }
 217 };
 218
 219 #define SAA7127_50HZ_SECAM_DAC_CONTROL 0x08
 220 static struct i2c_reg_value saa7127_init_config_50hz_secam[] = {
 221         { SAA7127_REG_BURST_START,                      0x21 },
 222         /* BURST_END is also used as a chip ID in saa7127_probe */
 223         { SAA7127_REG_BURST_END,                        0x1d },
 224         { SAA7127_REG_CHROMA_PHASE,                     0x3f },
 225         { SAA7127_REG_GAINU,                            0x6a },
 226         { SAA7127_REG_GAINV,                            0x81 },
 227         { SAA7127_REG_BLACK_LEVEL,                      0x33 },
 228         { SAA7127_REG_BLANKING_LEVEL,                   0x35 },
 229         { SAA7127_REG_VBI_BLANKING,                     0x35 },
 230         { SAA7127_REG_DAC_CONTROL,                      0x08 },
 231         { SAA7127_REG_BURST_AMP,                        0x2f },
 232         { SAA7127_REG_SUBC3,                            0xb2 },
 233         { SAA7127_REG_SUBC2,                            0x3b },
 234         { SAA7127_REG_SUBC1,                            0xa3 },
 235         { SAA7127_REG_SUBC0,                            0x28 },
 236         { SAA7127_REG_MULTI,                            0x90 },
 237         { SAA7127_REG_CLOSED_CAPTION,                   0x00 },
 238         { 0, 0 }
 239 };
 240
 241 /*
 242  **********************************************************************
 243  *
 244  *  Encoder Struct, holds the configuration state of the encoder
 245  *
 246  **********************************************************************
 247  */
 248
 249 enum saa712x_model {
 250         SAA7127,
 251         SAA7129,
 252 };
 253
 254 struct saa7127_state {
 255         struct v4l2_subdev sd;
 256         v4l2_std_id std;
 257         enum saa712x_model ident;
 258         enum saa7127_input_type input_type;
 259         enum saa7127_output_type output_type;
 260         int video_enable;
 261         int wss_enable;
 262         u16 wss_mode;
 263         int cc_enable;
 264         u16 cc_data;
 265         int xds_enable;
 266         u16 xds_data;
 267         int vps_enable;
 268         u8 vps_data[5];
 269         u8 reg_2d;
 270         u8 reg_3a;
 271         u8 reg_3a_cb;   /* colorbar bit */
 272         u8 reg_61;
 273 };
 274
 275 static inline struct saa7127_state *to_state(struct v4l2_subdev *sd)
 276 {
 277         return container_of(sd, struct saa7127_state, sd);
 278 }
 279
 280 static const char * const output_strs[] =
 281 {
 282         "S-Video + Composite",
 283         "Composite",
 284         "S-Video",
 285         "RGB",
 286         "YUV C",
 287         "YUV V"
 288 };
 289
 290 static const char * const wss_strs[] = {
 291         "invalid",
 292         "letterbox 14:9 center",
 293         "letterbox 14:9 top",
 294         "invalid",
 295         "letterbox 16:9 top",
 296         "invalid",
 297         "invalid",
 298         "16:9 full format anamorphic",
 299         "4:3 full format",
 300         "invalid",
 301         "invalid",
 302         "letterbox 16:9 center",
 303         "invalid",
 304         "letterbox >16:9 center",
 305         "14:9 full format center",
 306         "invalid",
 307 };
 308
 309 /* ----------------------------------------------------------------------- */
 310
 311 static int saa7127_read(struct v4l2_subdev *sd, u8 reg)
 312 {
 313         struct i2c_client *client = v4l2_get_subdevdata(sd);
 314
 315         return i2c_smbus_read_byte_data(client, reg);
 316 }
 317
 318 /* ----------------------------------------------------------------------- */
 319
 320 static int saa7127_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 321 {
 322         struct i2c_client *client = v4l2_get_subdevdata(sd);
 323         int i;
 324
 325         for (i = 0; i < 3; i++) {
 326                 if (i2c_smbus_write_byte_data(client, reg, val) == 0)
 327                         return 0;
 328         }
 329         v4l2_err(sd, "I2C Write Problem\n");
 330         return -1;
 331 }
 332
 333 /* ----------------------------------------------------------------------- */
 334
 335 static int saa7127_write_inittab(struct v4l2_subdev *sd,
 336                                  const struct i2c_reg_value *regs)
 337 {
 338         while (regs->reg != 0) {
 339                 saa7127_write(sd, regs->reg, regs->value);
 340                 regs++;
 341         }
 342         return 0;
 343 }
 344
 345 /* ----------------------------------------------------------------------- */
 346
 347 static int saa7127_set_vps(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
 348 {
 349         struct saa7127_state *state = to_state(sd);
 350         int enable = (data->line != 0);
 351
 352         if (enable && (data->field != 0 || data->line != 16))
 353                 return -EINVAL;
 354         if (state->vps_enable != enable) {
 355                 v4l2_dbg(1, debug, sd, "Turn VPS Signal %s\n", enable ? "on" : "off");
 356                 saa7127_write(sd, 0x54, enable << 7);
 357                 state->vps_enable = enable;
 358         }
 359         if (!enable)
 360                 return 0;
 361
 362         state->vps_data[0] = data->data[2];
 363         state->vps_data[1] = data->data[8];
 364         state->vps_data[2] = data->data[9];
 365         state->vps_data[3] = data->data[10];
 366         state->vps_data[4] = data->data[11];
 367         v4l2_dbg(1, debug, sd, "Set VPS data %*ph\n", 5, state->vps_data);
 368         saa7127_write(sd, 0x55, state->vps_data[0]);
 369         saa7127_write(sd, 0x56, state->vps_data[1]);
 370         saa7127_write(sd, 0x57, state->vps_data[2]);
 371         saa7127_write(sd, 0x58, state->vps_data[3]);
 372         saa7127_write(sd, 0x59, state->vps_data[4]);
 373         return 0;
 374 }
 375
 376 /* ----------------------------------------------------------------------- */
 377
 378 static int saa7127_set_cc(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
 379 {
 380         struct saa7127_state *state = to_state(sd);
 381         u16 cc = data->data[1] << 8 | data->data[0];
 382         int enable = (data->line != 0);
 383
 384         if (enable && (data->field != 0 || data->line != 21))
 385                 return -EINVAL;
 386         if (state->cc_enable != enable) {
 387                 v4l2_dbg(1, debug, sd,
 388                         "Turn CC %s\n", enable ? "on" : "off");
 389                 saa7127_write(sd, SAA7127_REG_CLOSED_CAPTION,
 390                         (state->xds_enable << 7) | (enable << 6) | 0x11);
 391                 state->cc_enable = enable;
 392         }
 393         if (!enable)
 394                 return 0;
 395
 396         v4l2_dbg(2, debug, sd, "CC data: %04x\n", cc);
 397         saa7127_write(sd, SAA7127_REG_LINE_21_ODD_0, cc & 0xff);
 398         saa7127_write(sd, SAA7127_REG_LINE_21_ODD_1, cc >> 8);
 399         state->cc_data = cc;
 400         return 0;
 401 }
 402
 403 /* ----------------------------------------------------------------------- */
 404
 405 static int saa7127_set_xds(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
 406 {
 407         struct saa7127_state *state = to_state(sd);
 408         u16 xds = data->data[1] << 8 | data->data[0];
 409         int enable = (data->line != 0);
 410
 411         if (enable && (data->field != 1 || data->line != 21))
 412                 return -EINVAL;
 413         if (state->xds_enable != enable) {
 414                 v4l2_dbg(1, debug, sd, "Turn XDS %s\n", enable ? "on" : "off");
 415                 saa7127_write(sd, SAA7127_REG_CLOSED_CAPTION,
 416                                 (enable << 7) | (state->cc_enable << 6) | 0x11);
 417                 state->xds_enable = enable;
 418         }
 419         if (!enable)
 420                 return 0;
 421
 422         v4l2_dbg(2, debug, sd, "XDS data: %04x\n", xds);
 423         saa7127_write(sd, SAA7127_REG_LINE_21_EVEN_0, xds & 0xff);
 424         saa7127_write(sd, SAA7127_REG_LINE_21_EVEN_1, xds >> 8);
 425         state->xds_data = xds;
 426         return 0;
 427 }
 428
 429 /* ----------------------------------------------------------------------- */
 430
 431 static int saa7127_set_wss(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
 432 {
 433         struct saa7127_state *state = to_state(sd);
 434         int enable = (data->line != 0);
 435
 436         if (enable && (data->field != 0 || data->line != 23))
 437                 return -EINVAL;
 438         if (state->wss_enable != enable) {
 439                 v4l2_dbg(1, debug, sd, "Turn WSS %s\n", enable ? "on" : "off");
 440                 saa7127_write(sd, 0x27, enable << 7);
 441                 state->wss_enable = enable;
 442         }
 443         if (!enable)
 444                 return 0;
 445
 446         saa7127_write(sd, 0x26, data->data[0]);
 447         saa7127_write(sd, 0x27, 0x80 | (data->data[1] & 0x3f));
 448         v4l2_dbg(1, debug, sd,
 449                 "WSS mode: %s\n", wss_strs[data->data[0] & 0xf]);
 450         state->wss_mode = (data->data[1] & 0x3f) << 8 | data->data[0];
 451         return 0;
 452 }
 453
 454 /* ----------------------------------------------------------------------- */
 455
 456 static int saa7127_set_video_enable(struct v4l2_subdev *sd, int enable)
 457 {
 458         struct saa7127_state *state = to_state(sd);
 459
 460         if (enable) {
 461                 v4l2_dbg(1, debug, sd, "Enable Video Output\n");
 462                 saa7127_write(sd, 0x2d, state->reg_2d);
 463                 saa7127_write(sd, 0x61, state->reg_61);
 464         } else {
 465                 v4l2_dbg(1, debug, sd, "Disable Video Output\n");
 466                 saa7127_write(sd, 0x2d, (state->reg_2d & 0xf0));
 467                 saa7127_write(sd, 0x61, (state->reg_61 | 0xc0));
 468         }
 469         state->video_enable = enable;
 470         return 0;
 471 }
 472
 473 /* ----------------------------------------------------------------------- */
 474
 475 static int saa7127_set_std(struct v4l2_subdev *sd, v4l2_std_id std)
 476 {
 477         struct saa7127_state *state = to_state(sd);
 478         const struct i2c_reg_value *inittab;
 479
 480         if (std & V4L2_STD_525_60) {
 481                 v4l2_dbg(1, debug, sd, "Selecting 60 Hz video Standard\n");
 482                 inittab = saa7127_init_config_60hz;
 483                 state->reg_61 = SAA7127_60HZ_DAC_CONTROL;
 484
 485         } else if (state->ident == SAA7129 &&
 486                    (std & V4L2_STD_SECAM) &&
 487                    !(std & (V4L2_STD_625_50 & ~V4L2_STD_SECAM))) {
 488
 489                 /* If and only if SECAM, with a SAA712[89] */
 490                 v4l2_dbg(1, debug, sd,
 491                          "Selecting 50 Hz SECAM video Standard\n");
 492                 inittab = saa7127_init_config_50hz_secam;
 493                 state->reg_61 = SAA7127_50HZ_SECAM_DAC_CONTROL;
 494
 495         } else {
 496                 v4l2_dbg(1, debug, sd, "Selecting 50 Hz PAL video Standard\n");
 497                 inittab = saa7127_init_config_50hz_pal;
 498                 state->reg_61 = SAA7127_50HZ_PAL_DAC_CONTROL;
 499         }
 500
 501         /* Write Table */
 502         saa7127_write_inittab(sd, inittab);
 503         state->std = std;
 504         return 0;
 505 }
 506
 507 /* ----------------------------------------------------------------------- */
 508
 509 static int saa7127_set_output_type(struct v4l2_subdev *sd, int output)
 510 {
 511         struct saa7127_state *state = to_state(sd);
 512
 513         switch (output) {
 514         case SAA7127_OUTPUT_TYPE_RGB:
 515                 state->reg_2d = 0x0f;   /* RGB + CVBS (for sync) */
 516                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
 517                 break;
 518
 519         case SAA7127_OUTPUT_TYPE_COMPOSITE:
 520                 if (state->ident == SAA7129)
 521                         state->reg_2d = 0x20;   /* CVBS only */
 522                 else
 523                         state->reg_2d = 0x08;   /* 00001000 CVBS only, RGB DAC's off (high impedance mode) */
 524                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
 525                 break;
 526
 527         case SAA7127_OUTPUT_TYPE_SVIDEO:
 528                 if (state->ident == SAA7129)
 529                         state->reg_2d = 0x18;   /* Y + C */
 530                 else
 531                         state->reg_2d = 0xff;   /*11111111  croma -> R, luma -> CVBS + G + B */
 532                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
 533                 break;
 534
 535         case SAA7127_OUTPUT_TYPE_YUV_V:
 536                 state->reg_2d = 0x4f;   /* reg 2D = 01001111, all DAC's on, RGB + VBS */
 537                 state->reg_3a = 0x0b;   /* reg 3A = 00001011, bypass RGB-matrix */
 538                 break;
 539
 540         case SAA7127_OUTPUT_TYPE_YUV_C:
 541                 state->reg_2d = 0x0f;   /* reg 2D = 00001111, all DAC's on, RGB + CVBS */
 542                 state->reg_3a = 0x0b;   /* reg 3A = 00001011, bypass RGB-matrix */
 543                 break;
 544
 545         case SAA7127_OUTPUT_TYPE_BOTH:
 546                 if (state->ident == SAA7129)
 547                         state->reg_2d = 0x38;
 548                 else
 549                         state->reg_2d = 0xbf;
 550                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
 551                 break;
 552
 553         default:
 554                 return -EINVAL;
 555         }
 556         v4l2_dbg(1, debug, sd,
 557                 "Selecting %s output type\n", output_strs[output]);
 558
 559         /* Configure Encoder */
 560         saa7127_write(sd, 0x2d, state->reg_2d);
 561         saa7127_write(sd, 0x3a, state->reg_3a | state->reg_3a_cb);
 562         state->output_type = output;
 563         return 0;
 564 }
 565
 566 /* ----------------------------------------------------------------------- */
 567
 568 static int saa7127_set_input_type(struct v4l2_subdev *sd, int input)
 569 {
 570         struct saa7127_state *state = to_state(sd);
 571
 572         switch (input) {
 573         case SAA7127_INPUT_TYPE_NORMAL: /* avia */
 574                 v4l2_dbg(1, debug, sd, "Selecting Normal Encoder Input\n");
 575                 state->reg_3a_cb = 0;
 576                 break;
 577
 578         case SAA7127_INPUT_TYPE_TEST_IMAGE:     /* color bar */
 579                 v4l2_dbg(1, debug, sd, "Selecting Color Bar generator\n");
 580                 state->reg_3a_cb = 0x80;
 581                 break;
 582
 583         default:
 584                 return -EINVAL;
 585         }
 586         saa7127_write(sd, 0x3a, state->reg_3a | state->reg_3a_cb);
 587         state->input_type = input;
 588         return 0;
 589 }
 590
 591 /* ----------------------------------------------------------------------- */
 592
 593 static int saa7127_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
 594 {
 595         struct saa7127_state *state = to_state(sd);
 596
 597         if (state->std == std)
 598                 return 0;
 599         return saa7127_set_std(sd, std);
 600 }
 601
 602 static int saa7127_s_routing(struct v4l2_subdev *sd,
 603                              u32 input, u32 output, u32 config)
 604 {
 605         struct saa7127_state *state = to_state(sd);
 606         int rc = 0;
 607
 608         if (state->input_type != input)
 609                 rc = saa7127_set_input_type(sd, input);
 610         if (rc == 0 && state->output_type != output)
 611                 rc = saa7127_set_output_type(sd, output);
 612         return rc;
 613 }
 614
 615 static int saa7127_s_stream(struct v4l2_subdev *sd, int enable)
 616 {
 617         struct saa7127_state *state = to_state(sd);
 618
 619         if (state->video_enable == enable)
 620                 return 0;
 621         return saa7127_set_video_enable(sd, enable);
 622 }
 623
 624 static int saa7127_g_sliced_fmt(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt)
 625 {
 626         struct saa7127_state *state = to_state(sd);
 627
 628         memset(fmt->service_lines, 0, sizeof(fmt->service_lines));
 629         if (state->vps_enable)
 630                 fmt->service_lines[0][16] = V4L2_SLICED_VPS;
 631         if (state->wss_enable)
 632                 fmt->service_lines[0][23] = V4L2_SLICED_WSS_625;
 633         if (state->cc_enable) {
 634                 fmt->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
 635                 fmt->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
 636         }
 637         fmt->service_set =
 638                 (state->vps_enable ? V4L2_SLICED_VPS : 0) |
 639                 (state->wss_enable ? V4L2_SLICED_WSS_625 : 0) |
 640                 (state->cc_enable ? V4L2_SLICED_CAPTION_525 : 0);
 641         return 0;
 642 }
 643
 644 static int saa7127_s_vbi_data(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
 645 {
 646         switch (data->id) {
 647         case V4L2_SLICED_WSS_625:
 648                 return saa7127_set_wss(sd, data);
 649         case V4L2_SLICED_VPS:
 650                 return saa7127_set_vps(sd, data);
 651         case V4L2_SLICED_CAPTION_525:
 652                 if (data->field == 0)
 653                         return saa7127_set_cc(sd, data);
 654                 return saa7127_set_xds(sd, data);
 655         default:
 656                 return -EINVAL;
 657         }
 658         return 0;
 659 }
 660
 661 #ifdef CONFIG_VIDEO_ADV_DEBUG
 662 static int saa7127_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 663 {
 664         reg->val = saa7127_read(sd, reg->reg & 0xff);
 665         reg->size = 1;
 666         return 0;
 667 }
 668
 669 static int saa7127_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 670 {
 671         saa7127_write(sd, reg->reg & 0xff, reg->val & 0xff);
 672         return 0;
 673 }
 674 #endif
 675
 676 static int saa7127_log_status(struct v4l2_subdev *sd)
 677 {
 678         struct saa7127_state *state = to_state(sd);
 679
 680         v4l2_info(sd, "Standard: %s\n", (state->std & V4L2_STD_525_60) ? "60 Hz" : "50 Hz");
 681         v4l2_info(sd, "Input:    %s\n", state->input_type ?  "color bars" : "normal");
 682         v4l2_info(sd, "Output:   %s\n", state->video_enable ?
 683                         output_strs[state->output_type] : "disabled");
 684         v4l2_info(sd, "WSS:      %s\n", state->wss_enable ?
 685                         wss_strs[state->wss_mode] : "disabled");
 686         v4l2_info(sd, "VPS:      %s\n", state->vps_enable ? "enabled" : "disabled");
 687         v4l2_info(sd, "CC:       %s\n", state->cc_enable ? "enabled" : "disabled");
 688         return 0;
 689 }
 690
 691 /* ----------------------------------------------------------------------- */
 692
 693 static const struct v4l2_subdev_core_ops saa7127_core_ops = {
 694         .log_status = saa7127_log_status,
 695 #ifdef CONFIG_VIDEO_ADV_DEBUG
 696         .g_register = saa7127_g_register,
 697         .s_register = saa7127_s_register,
 698 #endif
 699 };
 700
 701 static const struct v4l2_subdev_video_ops saa7127_video_ops = {
 702         .s_std_output = saa7127_s_std_output,
 703         .s_routing = saa7127_s_routing,
 704         .s_stream = saa7127_s_stream,
 705 };
 706
 707 static const struct v4l2_subdev_vbi_ops saa7127_vbi_ops = {
 708         .s_vbi_data = saa7127_s_vbi_data,
 709         .g_sliced_fmt = saa7127_g_sliced_fmt,
 710 };
 711
 712 static const struct v4l2_subdev_ops saa7127_ops = {
 713         .core = &saa7127_core_ops,
 714         .video = &saa7127_video_ops,
 715         .vbi = &saa7127_vbi_ops,
 716 };
 717
 718 /* ----------------------------------------------------------------------- */
 719
 720 static int saa7127_probe(struct i2c_client *client,
 721                          const struct i2c_device_id *id)
 722 {
 723         struct saa7127_state *state;
 724         struct v4l2_subdev *sd;
 725         struct v4l2_sliced_vbi_data vbi = { 0, 0, 0, 0 };  /* set to disabled */
 726
 727         /* Check if the adapter supports the needed features */
 728         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 729                 return -EIO;
 730
 731         v4l_dbg(1, debug, client, "detecting saa7127 client on address 0x%x\n",
 732                         client->addr << 1);
 733
 734         state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 735         if (state == NULL)
 736                 return -ENOMEM;
 737
 738         sd = &state->sd;
 739         v4l2_i2c_subdev_init(sd, client, &saa7127_ops);
 740
 741         /* First test register 0: Bits 5-7 are a version ID (should be 0),
 742            and bit 2 should also be 0.
 743            This is rather general, so the second test is more specific and
 744            looks at the 'ending point of burst in clock cycles' which is
 745            0x1d after a reset and not expected to ever change. */
 746         if ((saa7127_read(sd, 0) & 0xe4) != 0 ||
 747                         (saa7127_read(sd, 0x29) & 0x3f) != 0x1d) {
 748                 v4l2_dbg(1, debug, sd, "saa7127 not found\n");
 749                 return -ENODEV;
 750         }
 751
 752         if (id->driver_data) {  /* Chip type is already known */
 753                 state->ident = id->driver_data;
 754         } else {                /* Needs detection */
 755                 int read_result;
 756
 757                 /* Detect if it's an saa7129 */
 758                 read_result = saa7127_read(sd, SAA7129_REG_FADE_KEY_COL2);
 759                 saa7127_write(sd, SAA7129_REG_FADE_KEY_COL2, 0xaa);
 760                 if (saa7127_read(sd, SAA7129_REG_FADE_KEY_COL2) == 0xaa) {
 761                         saa7127_write(sd, SAA7129_REG_FADE_KEY_COL2,
 762                                         read_result);
 763                         state->ident = SAA7129;
 764                         strlcpy(client->name, "saa7129", I2C_NAME_SIZE);
 765                 } else {
 766                         state->ident = SAA7127;
 767                         strlcpy(client->name, "saa7127", I2C_NAME_SIZE);
 768                 }
 769         }
 770
 771         v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
 772                         client->addr << 1, client->adapter->name);
 773
 774         v4l2_dbg(1, debug, sd, "Configuring encoder\n");
 775         saa7127_write_inittab(sd, saa7127_init_config_common);
 776         saa7127_set_std(sd, V4L2_STD_NTSC);
 777         saa7127_set_output_type(sd, SAA7127_OUTPUT_TYPE_BOTH);
 778         saa7127_set_vps(sd, &vbi);
 779         saa7127_set_wss(sd, &vbi);
 780         saa7127_set_cc(sd, &vbi);
 781         saa7127_set_xds(sd, &vbi);
 782         if (test_image == 1)
 783                 /* The Encoder has an internal Colorbar generator */
 784                 /* This can be used for debugging */
 785                 saa7127_set_input_type(sd, SAA7127_INPUT_TYPE_TEST_IMAGE);
 786         else
 787                 saa7127_set_input_type(sd, SAA7127_INPUT_TYPE_NORMAL);
 788         saa7127_set_video_enable(sd, 1);
 789
 790         if (state->ident == SAA7129)
 791                 saa7127_write_inittab(sd, saa7129_init_config_extra);
 792         return 0;
 793 }
 794
 795 /* ----------------------------------------------------------------------- */
 796
 797 static int saa7127_remove(struct i2c_client *client)
 798 {
 799         struct v4l2_subdev *sd = i2c_get_clientdata(client);
 800
 801         v4l2_device_unregister_subdev(sd);
 802         /* Turn off TV output */
 803         saa7127_set_video_enable(sd, 0);
 804         return 0;
 805 }
 806
 807 /* ----------------------------------------------------------------------- */
 808
 809 static struct i2c_device_id saa7127_id[] = {
 810         { "saa7127_auto", 0 },  /* auto-detection */
 811         { "saa7126", SAA7127 },
 812         { "saa7127", SAA7127 },
 813         { "saa7128", SAA7129 },
 814         { "saa7129", SAA7129 },
 815         { }
 816 };
 817 MODULE_DEVICE_TABLE(i2c, saa7127_id);
 818
 819 static struct i2c_driver saa7127_driver = {
 820         .driver = {
 821                 .name   = "saa7127",
 822         },
 823         .probe          = saa7127_probe,
 824         .remove         = saa7127_remove,
 825         .id_table       = saa7127_id,
 826 };
 827
 828 module_i2c_driver(saa7127_driver);