drivers/media/video/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 find 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  * You should have received a copy of the GNU General Public License
  46  * along with this program; if not, write to the Free Software
  47  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  48  */
  49
  50
  51 #include <linux/kernel.h>
  52 #include <linux/module.h>
  53 #include <linux/slab.h>
  54 #include <linux/i2c.h>
  55 #include <linux/videodev2.h>
  56 #include <media/v4l2-common.h>
  57 #include <media/v4l2-chip-ident.h>
  58 #include <media/v4l2-i2c-drv.h>
  59 #include <media/saa7127.h>
  60
  61 static int debug = 0;
  62 static int test_image = 0;
  63
  64 MODULE_DESCRIPTION("Philips SAA7127/9 video encoder driver");
  65 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil");
  66 MODULE_LICENSE("GPL");
  67 module_param(debug, int, 0644);
  68 module_param(test_image, int, 0644);
  69 MODULE_PARM_DESC(debug, "debug level (0-2)");
  70 MODULE_PARM_DESC(test_image, "test_image (0-1)");
  71
  72
  73 /*
  74  * SAA7127 registers
  75  */
  76
  77 #define SAA7127_REG_STATUS                           0x00
  78 #define SAA7127_REG_WIDESCREEN_CONFIG                0x26
  79 #define SAA7127_REG_WIDESCREEN_ENABLE                0x27
  80 #define SAA7127_REG_BURST_START                      0x28
  81 #define SAA7127_REG_BURST_END                        0x29
  82 #define SAA7127_REG_COPYGEN_0                        0x2a
  83 #define SAA7127_REG_COPYGEN_1                        0x2b
  84 #define SAA7127_REG_COPYGEN_2                        0x2c
  85 #define SAA7127_REG_OUTPUT_PORT_CONTROL              0x2d
  86 #define SAA7127_REG_GAIN_LUMINANCE_RGB               0x38
  87 #define SAA7127_REG_GAIN_COLORDIFF_RGB               0x39
  88 #define SAA7127_REG_INPUT_PORT_CONTROL_1             0x3a
  89 #define SAA7129_REG_FADE_KEY_COL2                    0x4f
  90 #define SAA7127_REG_CHROMA_PHASE                     0x5a
  91 #define SAA7127_REG_GAINU                            0x5b
  92 #define SAA7127_REG_GAINV                            0x5c
  93 #define SAA7127_REG_BLACK_LEVEL                      0x5d
  94 #define SAA7127_REG_BLANKING_LEVEL                   0x5e
  95 #define SAA7127_REG_VBI_BLANKING                     0x5f
  96 #define SAA7127_REG_DAC_CONTROL                      0x61
  97 #define SAA7127_REG_BURST_AMP                        0x62
  98 #define SAA7127_REG_SUBC3                            0x63
  99 #define SAA7127_REG_SUBC2                            0x64
 100 #define SAA7127_REG_SUBC1                            0x65
 101 #define SAA7127_REG_SUBC0                            0x66
 102 #define SAA7127_REG_LINE_21_ODD_0                    0x67
 103 #define SAA7127_REG_LINE_21_ODD_1                    0x68
 104 #define SAA7127_REG_LINE_21_EVEN_0                   0x69
 105 #define SAA7127_REG_LINE_21_EVEN_1                   0x6a
 106 #define SAA7127_REG_RCV_PORT_CONTROL                 0x6b
 107 #define SAA7127_REG_VTRIG                            0x6c
 108 #define SAA7127_REG_HTRIG_HI                         0x6d
 109 #define SAA7127_REG_MULTI                            0x6e
 110 #define SAA7127_REG_CLOSED_CAPTION                   0x6f
 111 #define SAA7127_REG_RCV2_OUTPUT_START                0x70
 112 #define SAA7127_REG_RCV2_OUTPUT_END                  0x71
 113 #define SAA7127_REG_RCV2_OUTPUT_MSBS                 0x72
 114 #define SAA7127_REG_TTX_REQUEST_H_START              0x73
 115 #define SAA7127_REG_TTX_REQUEST_H_DELAY_LENGTH       0x74
 116 #define SAA7127_REG_CSYNC_ADVANCE_VSYNC_SHIFT        0x75
 117 #define SAA7127_REG_TTX_ODD_REQ_VERT_START           0x76
 118 #define SAA7127_REG_TTX_ODD_REQ_VERT_END             0x77
 119 #define SAA7127_REG_TTX_EVEN_REQ_VERT_START          0x78
 120 #define SAA7127_REG_TTX_EVEN_REQ_VERT_END            0x79
 121 #define SAA7127_REG_FIRST_ACTIVE                     0x7a
 122 #define SAA7127_REG_LAST_ACTIVE                      0x7b
 123 #define SAA7127_REG_MSB_VERTICAL                     0x7c
 124 #define SAA7127_REG_DISABLE_TTX_LINE_LO_0            0x7e
 125 #define SAA7127_REG_DISABLE_TTX_LINE_LO_1            0x7f
 126
 127 /*
 128  **********************************************************************
 129  *
 130  *  Arrays with configuration parameters for the SAA7127
 131  *
 132  **********************************************************************
 133  */
 134
 135 struct i2c_reg_value {
 136         unsigned char reg;
 137         unsigned char value;
 138 };
 139
 140 static const struct i2c_reg_value saa7129_init_config_extra[] = {
 141         { SAA7127_REG_OUTPUT_PORT_CONTROL,              0x38 },
 142         { SAA7127_REG_VTRIG,                            0xfa },
 143         { 0, 0 }
 144 };
 145
 146 static const struct i2c_reg_value saa7127_init_config_common[] = {
 147         { SAA7127_REG_WIDESCREEN_CONFIG,                0x0d },
 148         { SAA7127_REG_WIDESCREEN_ENABLE,                0x00 },
 149         { SAA7127_REG_COPYGEN_0,                        0x77 },
 150         { SAA7127_REG_COPYGEN_1,                        0x41 },
 151         { SAA7127_REG_COPYGEN_2,                        0x00 }, /* Macrovision enable/disable */
 152         { SAA7127_REG_OUTPUT_PORT_CONTROL,              0x9e },
 153         { SAA7127_REG_GAIN_LUMINANCE_RGB,               0x00 },
 154         { SAA7127_REG_GAIN_COLORDIFF_RGB,               0x00 },
 155         { SAA7127_REG_INPUT_PORT_CONTROL_1,             0x80 }, /* for color bars */
 156         { SAA7127_REG_LINE_21_ODD_0,                    0x77 },
 157         { SAA7127_REG_LINE_21_ODD_1,                    0x41 },
 158         { SAA7127_REG_LINE_21_EVEN_0,                   0x88 },
 159         { SAA7127_REG_LINE_21_EVEN_1,                   0x41 },
 160         { SAA7127_REG_RCV_PORT_CONTROL,                 0x12 },
 161         { SAA7127_REG_VTRIG,                            0xf9 },
 162         { SAA7127_REG_HTRIG_HI,                         0x00 },
 163         { SAA7127_REG_RCV2_OUTPUT_START,                0x41 },
 164         { SAA7127_REG_RCV2_OUTPUT_END,                  0xc3 },
 165         { SAA7127_REG_RCV2_OUTPUT_MSBS,                 0x00 },
 166         { SAA7127_REG_TTX_REQUEST_H_START,              0x3e },
 167         { SAA7127_REG_TTX_REQUEST_H_DELAY_LENGTH,       0xb8 },
 168         { SAA7127_REG_CSYNC_ADVANCE_VSYNC_SHIFT,        0x03 },
 169         { SAA7127_REG_TTX_ODD_REQ_VERT_START,           0x15 },
 170         { SAA7127_REG_TTX_ODD_REQ_VERT_END,             0x16 },
 171         { SAA7127_REG_TTX_EVEN_REQ_VERT_START,          0x15 },
 172         { SAA7127_REG_TTX_EVEN_REQ_VERT_END,            0x16 },
 173         { SAA7127_REG_FIRST_ACTIVE,                     0x1a },
 174         { SAA7127_REG_LAST_ACTIVE,                      0x01 },
 175         { SAA7127_REG_MSB_VERTICAL,                     0xc0 },
 176         { SAA7127_REG_DISABLE_TTX_LINE_LO_0,            0x00 },
 177         { SAA7127_REG_DISABLE_TTX_LINE_LO_1,            0x00 },
 178         { 0, 0 }
 179 };
 180
 181 #define SAA7127_60HZ_DAC_CONTROL 0x15
 182 static const struct i2c_reg_value saa7127_init_config_60hz[] = {
 183         { SAA7127_REG_BURST_START,                      0x19 },
 184         /* BURST_END is also used as a chip ID in saa7127_detect_client */
 185         { SAA7127_REG_BURST_END,                        0x1d },
 186         { SAA7127_REG_CHROMA_PHASE,                     0xa3 },
 187         { SAA7127_REG_GAINU,                            0x98 },
 188         { SAA7127_REG_GAINV,                            0xd3 },
 189         { SAA7127_REG_BLACK_LEVEL,                      0x39 },
 190         { SAA7127_REG_BLANKING_LEVEL,                   0x2e },
 191         { SAA7127_REG_VBI_BLANKING,                     0x2e },
 192         { SAA7127_REG_DAC_CONTROL,                      0x15 },
 193         { SAA7127_REG_BURST_AMP,                        0x4d },
 194         { SAA7127_REG_SUBC3,                            0x1f },
 195         { SAA7127_REG_SUBC2,                            0x7c },
 196         { SAA7127_REG_SUBC1,                            0xf0 },
 197         { SAA7127_REG_SUBC0,                            0x21 },
 198         { SAA7127_REG_MULTI,                            0x90 },
 199         { SAA7127_REG_CLOSED_CAPTION,                   0x11 },
 200         { 0, 0 }
 201 };
 202
 203 #define SAA7127_50HZ_DAC_CONTROL 0x02
 204 static struct i2c_reg_value saa7127_init_config_50hz[] = {
 205         { SAA7127_REG_BURST_START,                      0x21 },
 206         /* BURST_END is also used as a chip ID in saa7127_detect_client */
 207         { SAA7127_REG_BURST_END,                        0x1d },
 208         { SAA7127_REG_CHROMA_PHASE,                     0x3f },
 209         { SAA7127_REG_GAINU,                            0x7d },
 210         { SAA7127_REG_GAINV,                            0xaf },
 211         { SAA7127_REG_BLACK_LEVEL,                      0x33 },
 212         { SAA7127_REG_BLANKING_LEVEL,                   0x35 },
 213         { SAA7127_REG_VBI_BLANKING,                     0x35 },
 214         { SAA7127_REG_DAC_CONTROL,                      0x02 },
 215         { SAA7127_REG_BURST_AMP,                        0x2f },
 216         { SAA7127_REG_SUBC3,                            0xcb },
 217         { SAA7127_REG_SUBC2,                            0x8a },
 218         { SAA7127_REG_SUBC1,                            0x09 },
 219         { SAA7127_REG_SUBC0,                            0x2a },
 220         { SAA7127_REG_MULTI,                            0xa0 },
 221         { SAA7127_REG_CLOSED_CAPTION,                   0x00 },
 222         { 0, 0 }
 223 };
 224
 225 /*
 226  **********************************************************************
 227  *
 228  *  Encoder Struct, holds the configuration state of the encoder
 229  *
 230  **********************************************************************
 231  */
 232
 233 struct saa7127_state {
 234         v4l2_std_id std;
 235         u32 ident;
 236         enum saa7127_input_type input_type;
 237         enum saa7127_output_type output_type;
 238         int video_enable;
 239         int wss_enable;
 240         u16 wss_mode;
 241         int cc_enable;
 242         u16 cc_data;
 243         int xds_enable;
 244         u16 xds_data;
 245         int vps_enable;
 246         u8 vps_data[5];
 247         u8 reg_2d;
 248         u8 reg_3a;
 249         u8 reg_3a_cb;   /* colorbar bit */
 250         u8 reg_61;
 251 };
 252
 253 static const char * const output_strs[] =
 254 {
 255         "S-Video + Composite",
 256         "Composite",
 257         "S-Video",
 258         "RGB",
 259         "YUV C",
 260         "YUV V"
 261 };
 262
 263 static const char * const wss_strs[] = {
 264         "invalid",
 265         "letterbox 14:9 center",
 266         "letterbox 14:9 top",
 267         "invalid",
 268         "letterbox 16:9 top",
 269         "invalid",
 270         "invalid",
 271         "16:9 full format anamorphic",
 272         "4:3 full format",
 273         "invalid",
 274         "invalid",
 275         "letterbox 16:9 center",
 276         "invalid",
 277         "letterbox >16:9 center",
 278         "14:9 full format center",
 279         "invalid",
 280 };
 281
 282 /* ----------------------------------------------------------------------- */
 283
 284 static int saa7127_read(struct i2c_client *client, u8 reg)
 285 {
 286         return i2c_smbus_read_byte_data(client, reg);
 287 }
 288
 289 /* ----------------------------------------------------------------------- */
 290
 291 static int saa7127_write(struct i2c_client *client, u8 reg, u8 val)
 292 {
 293         int i;
 294
 295         for (i = 0; i < 3; i++) {
 296                 if (i2c_smbus_write_byte_data(client, reg, val) == 0)
 297                         return 0;
 298         }
 299         v4l_err(client, "I2C Write Problem\n");
 300         return -1;
 301 }
 302
 303 /* ----------------------------------------------------------------------- */
 304
 305 static int saa7127_write_inittab(struct i2c_client *client,
 306                                  const struct i2c_reg_value *regs)
 307 {
 308         while (regs->reg != 0) {
 309                 saa7127_write(client, regs->reg, regs->value);
 310                 regs++;
 311         }
 312         return 0;
 313 }
 314
 315 /* ----------------------------------------------------------------------- */
 316
 317 static int saa7127_set_vps(struct i2c_client *client, struct v4l2_sliced_vbi_data *data)
 318 {
 319         struct saa7127_state *state = i2c_get_clientdata(client);
 320         int enable = (data->line != 0);
 321
 322         if (enable && (data->field != 0 || data->line != 16))
 323                 return -EINVAL;
 324         if (state->vps_enable != enable) {
 325                 v4l_dbg(1, debug, client, "Turn VPS Signal %s\n", enable ? "on" : "off");
 326                 saa7127_write(client, 0x54, enable << 7);
 327                 state->vps_enable = enable;
 328         }
 329         if (!enable)
 330                 return 0;
 331
 332         state->vps_data[0] = data->data[2];
 333         state->vps_data[1] = data->data[8];
 334         state->vps_data[2] = data->data[9];
 335         state->vps_data[3] = data->data[10];
 336         state->vps_data[4] = data->data[11];
 337         v4l_dbg(1, debug, client, "Set VPS data %02x %02x %02x %02x %02x\n",
 338                 state->vps_data[0], state->vps_data[1],
 339                 state->vps_data[2], state->vps_data[3],
 340                 state->vps_data[4]);
 341         saa7127_write(client, 0x55, state->vps_data[0]);
 342         saa7127_write(client, 0x56, state->vps_data[1]);
 343         saa7127_write(client, 0x57, state->vps_data[2]);
 344         saa7127_write(client, 0x58, state->vps_data[3]);
 345         saa7127_write(client, 0x59, state->vps_data[4]);
 346         return 0;
 347 }
 348
 349 /* ----------------------------------------------------------------------- */
 350
 351 static int saa7127_set_cc(struct i2c_client *client, struct v4l2_sliced_vbi_data *data)
 352 {
 353         struct saa7127_state *state = i2c_get_clientdata(client);
 354         u16 cc = data->data[1] << 8 | data->data[0];
 355         int enable = (data->line != 0);
 356
 357         if (enable && (data->field != 0 || data->line != 21))
 358                 return -EINVAL;
 359         if (state->cc_enable != enable) {
 360                 v4l_dbg(1, debug, client, "Turn CC %s\n", enable ? "on" : "off");
 361                 saa7127_write(client, SAA7127_REG_CLOSED_CAPTION,
 362                                 (state->xds_enable << 7) | (enable << 6) | 0x11);
 363                 state->cc_enable = enable;
 364         }
 365         if (!enable)
 366                 return 0;
 367
 368         v4l_dbg(2, debug, client, "CC data: %04x\n", cc);
 369         saa7127_write(client, SAA7127_REG_LINE_21_ODD_0, cc & 0xff);
 370         saa7127_write(client, SAA7127_REG_LINE_21_ODD_1, cc >> 8);
 371         state->cc_data = cc;
 372         return 0;
 373 }
 374
 375 /* ----------------------------------------------------------------------- */
 376
 377 static int saa7127_set_xds(struct i2c_client *client, struct v4l2_sliced_vbi_data *data)
 378 {
 379         struct saa7127_state *state = i2c_get_clientdata(client);
 380         u16 xds = data->data[1] << 8 | data->data[0];
 381         int enable = (data->line != 0);
 382
 383         if (enable && (data->field != 1 || data->line != 21))
 384                 return -EINVAL;
 385         if (state->xds_enable != enable) {
 386                 v4l_dbg(1, debug, client, "Turn XDS %s\n", enable ? "on" : "off");
 387                 saa7127_write(client, SAA7127_REG_CLOSED_CAPTION,
 388                                 (enable << 7) | (state->cc_enable << 6) | 0x11);
 389                 state->xds_enable = enable;
 390         }
 391         if (!enable)
 392                 return 0;
 393
 394         v4l_dbg(2, debug, client, "XDS data: %04x\n", xds);
 395         saa7127_write(client, SAA7127_REG_LINE_21_EVEN_0, xds & 0xff);
 396         saa7127_write(client, SAA7127_REG_LINE_21_EVEN_1, xds >> 8);
 397         state->xds_data = xds;
 398         return 0;
 399 }
 400
 401 /* ----------------------------------------------------------------------- */
 402
 403 static int saa7127_set_wss(struct i2c_client *client, struct v4l2_sliced_vbi_data *data)
 404 {
 405         struct saa7127_state *state = i2c_get_clientdata(client);
 406         int enable = (data->line != 0);
 407
 408         if (enable && (data->field != 0 || data->line != 23))
 409                 return -EINVAL;
 410         if (state->wss_enable != enable) {
 411                 v4l_dbg(1, debug, client, "Turn WSS %s\n", enable ? "on" : "off");
 412                 saa7127_write(client, 0x27, enable << 7);
 413                 state->wss_enable = enable;
 414         }
 415         if (!enable)
 416                 return 0;
 417
 418         saa7127_write(client, 0x26, data->data[0]);
 419         saa7127_write(client, 0x27, 0x80 | (data->data[1] & 0x3f));
 420         v4l_dbg(1, debug, client, "WSS mode: %s\n", wss_strs[data->data[0] & 0xf]);
 421         state->wss_mode = (data->data[1] & 0x3f) << 8 | data->data[0];
 422         return 0;
 423 }
 424
 425 /* ----------------------------------------------------------------------- */
 426
 427 static int saa7127_set_video_enable(struct i2c_client *client, int enable)
 428 {
 429         struct saa7127_state *state = i2c_get_clientdata(client);
 430
 431         if (enable) {
 432                 v4l_dbg(1, debug, client, "Enable Video Output\n");
 433                 saa7127_write(client, 0x2d, state->reg_2d);
 434                 saa7127_write(client, 0x61, state->reg_61);
 435         } else {
 436                 v4l_dbg(1, debug, client, "Disable Video Output\n");
 437                 saa7127_write(client, 0x2d, (state->reg_2d & 0xf0));
 438                 saa7127_write(client, 0x61, (state->reg_61 | 0xc0));
 439         }
 440         state->video_enable = enable;
 441         return 0;
 442 }
 443
 444 /* ----------------------------------------------------------------------- */
 445
 446 static int saa7127_set_std(struct i2c_client *client, v4l2_std_id std)
 447 {
 448         struct saa7127_state *state = i2c_get_clientdata(client);
 449         const struct i2c_reg_value *inittab;
 450
 451         if (std & V4L2_STD_525_60) {
 452                 v4l_dbg(1, debug, client, "Selecting 60 Hz video Standard\n");
 453                 inittab = saa7127_init_config_60hz;
 454                 state->reg_61 = SAA7127_60HZ_DAC_CONTROL;
 455         } else {
 456                 v4l_dbg(1, debug, client, "Selecting 50 Hz video Standard\n");
 457                 inittab = saa7127_init_config_50hz;
 458                 state->reg_61 = SAA7127_50HZ_DAC_CONTROL;
 459         }
 460
 461         /* Write Table */
 462         saa7127_write_inittab(client, inittab);
 463         state->std = std;
 464         return 0;
 465 }
 466
 467 /* ----------------------------------------------------------------------- */
 468
 469 static int saa7127_set_output_type(struct i2c_client *client, int output)
 470 {
 471         struct saa7127_state *state = i2c_get_clientdata(client);
 472
 473         switch (output) {
 474         case SAA7127_OUTPUT_TYPE_RGB:
 475                 state->reg_2d = 0x0f;   /* RGB + CVBS (for sync) */
 476                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
 477                 break;
 478
 479         case SAA7127_OUTPUT_TYPE_COMPOSITE:
 480                 state->reg_2d = 0x08;   /* 00001000 CVBS only, RGB DAC's off (high impedance mode) */
 481                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
 482                 break;
 483
 484         case SAA7127_OUTPUT_TYPE_SVIDEO:
 485                 state->reg_2d = 0xff;   /* 11111111  croma -> R, luma -> CVBS + G + B */
 486                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
 487                 break;
 488
 489         case SAA7127_OUTPUT_TYPE_YUV_V:
 490                 state->reg_2d = 0x4f;   /* reg 2D = 01001111, all DAC's on, RGB + VBS */
 491                 state->reg_3a = 0x0b;   /* reg 3A = 00001011, bypass RGB-matrix */
 492                 break;
 493
 494         case SAA7127_OUTPUT_TYPE_YUV_C:
 495                 state->reg_2d = 0x0f;   /* reg 2D = 00001111, all DAC's on, RGB + CVBS */
 496                 state->reg_3a = 0x0b;   /* reg 3A = 00001011, bypass RGB-matrix */
 497                 break;
 498
 499         case SAA7127_OUTPUT_TYPE_BOTH:
 500                 state->reg_2d = 0xbf;
 501                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
 502                 break;
 503
 504         default:
 505                 return -EINVAL;
 506         }
 507         v4l_dbg(1, debug, client, "Selecting %s output type\n", output_strs[output]);
 508
 509         /* Configure Encoder */
 510         saa7127_write(client, 0x2d, state->reg_2d);
 511         saa7127_write(client, 0x3a, state->reg_3a | state->reg_3a_cb);
 512         state->output_type = output;
 513         return 0;
 514 }
 515
 516 /* ----------------------------------------------------------------------- */
 517
 518 static int saa7127_set_input_type(struct i2c_client *client, int input)
 519 {
 520         struct saa7127_state *state = i2c_get_clientdata(client);
 521
 522         switch (input) {
 523         case SAA7127_INPUT_TYPE_NORMAL: /* avia */
 524                 v4l_dbg(1, debug, client, "Selecting Normal Encoder Input\n");
 525                 state->reg_3a_cb = 0;
 526                 break;
 527
 528         case SAA7127_INPUT_TYPE_TEST_IMAGE:     /* color bar */
 529                 v4l_dbg(1, debug, client, "Selecting Color Bar generator\n");
 530                 state->reg_3a_cb = 0x80;
 531                 break;
 532
 533         default:
 534                 return -EINVAL;
 535         }
 536         saa7127_write(client, 0x3a, state->reg_3a | state->reg_3a_cb);
 537         state->input_type = input;
 538         return 0;
 539 }
 540
 541 /* ----------------------------------------------------------------------- */
 542
 543 static int saa7127_command(struct i2c_client *client,
 544                            unsigned int cmd, void *arg)
 545 {
 546         struct saa7127_state *state = i2c_get_clientdata(client);
 547         struct v4l2_format *fmt = arg;
 548         struct v4l2_routing *route = arg;
 549
 550         switch (cmd) {
 551         case VIDIOC_INT_S_STD_OUTPUT:
 552                 if (state->std == *(v4l2_std_id *)arg)
 553                         break;
 554                 return saa7127_set_std(client, *(v4l2_std_id *)arg);
 555
 556         case VIDIOC_INT_G_STD_OUTPUT:
 557                 *(v4l2_std_id *)arg = state->std;
 558                 break;
 559
 560         case VIDIOC_INT_G_VIDEO_ROUTING:
 561                 route->input = state->input_type;
 562                 route->output = state->output_type;
 563                 break;
 564
 565         case VIDIOC_INT_S_VIDEO_ROUTING:
 566         {
 567                 int rc = 0;
 568
 569                 if (state->input_type != route->input) {
 570                         rc = saa7127_set_input_type(client, route->input);
 571                 }
 572                 if (rc == 0 && state->output_type != route->output) {
 573                         rc = saa7127_set_output_type(client, route->output);
 574                 }
 575                 return rc;
 576         }
 577
 578         case VIDIOC_STREAMON:
 579         case VIDIOC_STREAMOFF:
 580                 if (state->video_enable == (cmd == VIDIOC_STREAMON))
 581                         break;
 582                 return saa7127_set_video_enable(client, cmd == VIDIOC_STREAMON);
 583
 584         case VIDIOC_G_FMT:
 585                 if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
 586                         return -EINVAL;
 587
 588                 memset(&fmt->fmt.sliced, 0, sizeof(fmt->fmt.sliced));
 589                 if (state->vps_enable)
 590                         fmt->fmt.sliced.service_lines[0][16] = V4L2_SLICED_VPS;
 591                 if (state->wss_enable)
 592                         fmt->fmt.sliced.service_lines[0][23] = V4L2_SLICED_WSS_625;
 593                 if (state->cc_enable) {
 594                         fmt->fmt.sliced.service_lines[0][21] = V4L2_SLICED_CAPTION_525;
 595                         fmt->fmt.sliced.service_lines[1][21] = V4L2_SLICED_CAPTION_525;
 596                 }
 597                 fmt->fmt.sliced.service_set =
 598                         (state->vps_enable ? V4L2_SLICED_VPS : 0) |
 599                         (state->wss_enable ? V4L2_SLICED_WSS_625 : 0) |
 600                         (state->cc_enable ? V4L2_SLICED_CAPTION_525 : 0);
 601                 break;
 602
 603         case VIDIOC_LOG_STATUS:
 604                 v4l_info(client, "Standard: %s\n", (state->std & V4L2_STD_525_60) ? "60 Hz" : "50 Hz");
 605                 v4l_info(client, "Input:    %s\n", state->input_type ?  "color bars" : "normal");
 606                 v4l_info(client, "Output:   %s\n", state->video_enable ?
 607                         output_strs[state->output_type] : "disabled");
 608                 v4l_info(client, "WSS:      %s\n", state->wss_enable ?
 609                         wss_strs[state->wss_mode] : "disabled");
 610                 v4l_info(client, "VPS:      %s\n", state->vps_enable ? "enabled" : "disabled");
 611                 v4l_info(client, "CC:       %s\n", state->cc_enable ? "enabled" : "disabled");
 612                 break;
 613
 614 #ifdef CONFIG_VIDEO_ADV_DEBUG
 615         case VIDIOC_DBG_G_REGISTER:
 616         case VIDIOC_DBG_S_REGISTER:
 617         {
 618                 struct v4l2_register *reg = arg;
 619
 620                 if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
 621                         return -EINVAL;
 622                 if (!capable(CAP_SYS_ADMIN))
 623                         return -EPERM;
 624                 if (cmd == VIDIOC_DBG_G_REGISTER)
 625                         reg->val = saa7127_read(client, reg->reg & 0xff);
 626                 else
 627                         saa7127_write(client, reg->reg & 0xff, reg->val & 0xff);
 628                 break;
 629         }
 630 #endif
 631
 632         case VIDIOC_INT_S_VBI_DATA:
 633         {
 634                 struct v4l2_sliced_vbi_data *data = arg;
 635
 636                 switch (data->id) {
 637                         case V4L2_SLICED_WSS_625:
 638                                 return saa7127_set_wss(client, data);
 639                         case V4L2_SLICED_VPS:
 640                                 return saa7127_set_vps(client, data);
 641                         case V4L2_SLICED_CAPTION_525:
 642                                 if (data->field == 0)
 643                                         return saa7127_set_cc(client, data);
 644                                 return saa7127_set_xds(client, data);
 645                         default:
 646                                 return -EINVAL;
 647                 }
 648                 break;
 649         }
 650
 651         case VIDIOC_G_CHIP_IDENT:
 652                 return v4l2_chip_ident_i2c_client(client, arg, state->ident, 0);
 653
 654         default:
 655                 return -EINVAL;
 656         }
 657         return 0;
 658 }
 659
 660 /* ----------------------------------------------------------------------- */
 661
 662 static int saa7127_probe(struct i2c_client *client)
 663 {
 664         struct saa7127_state *state;
 665         struct v4l2_sliced_vbi_data vbi = { 0, 0, 0, 0 };  /* set to disabled */
 666         int read_result = 0;
 667
 668         /* Check if the adapter supports the needed features */
 669         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 670                 return -EIO;
 671
 672         snprintf(client->name, sizeof(client->name) - 1, "saa7127");
 673
 674         v4l_dbg(1, debug, client, "detecting saa7127 client on address 0x%x\n", client->addr << 1);
 675
 676         /* First test register 0: Bits 5-7 are a version ID (should be 0),
 677            and bit 2 should also be 0.
 678            This is rather general, so the second test is more specific and
 679            looks at the 'ending point of burst in clock cycles' which is
 680            0x1d after a reset and not expected to ever change. */
 681         if ((saa7127_read(client, 0) & 0xe4) != 0 ||
 682                         (saa7127_read(client, 0x29) & 0x3f) != 0x1d) {
 683                 v4l_dbg(1, debug, client, "saa7127 not found\n");
 684                 return -ENODEV;
 685         }
 686         state = kzalloc(sizeof(struct saa7127_state), GFP_KERNEL);
 687
 688         if (state == NULL) {
 689                 return -ENOMEM;
 690         }
 691
 692         i2c_set_clientdata(client, state);
 693
 694         /* Configure Encoder */
 695
 696         v4l_dbg(1, debug, client, "Configuring encoder\n");
 697         saa7127_write_inittab(client, saa7127_init_config_common);
 698         saa7127_set_std(client, V4L2_STD_NTSC);
 699         saa7127_set_output_type(client, SAA7127_OUTPUT_TYPE_BOTH);
 700         saa7127_set_vps(client, &vbi);
 701         saa7127_set_wss(client, &vbi);
 702         saa7127_set_cc(client, &vbi);
 703         saa7127_set_xds(client, &vbi);
 704         if (test_image == 1) {
 705                 /* The Encoder has an internal Colorbar generator */
 706                 /* This can be used for debugging */
 707                 saa7127_set_input_type(client, SAA7127_INPUT_TYPE_TEST_IMAGE);
 708         } else {
 709                 saa7127_set_input_type(client, SAA7127_INPUT_TYPE_NORMAL);
 710         }
 711         saa7127_set_video_enable(client, 1);
 712
 713         /* Detect if it's an saa7129 */
 714         read_result = saa7127_read(client, SAA7129_REG_FADE_KEY_COL2);
 715         saa7127_write(client, SAA7129_REG_FADE_KEY_COL2, 0xaa);
 716         if (saa7127_read(client, SAA7129_REG_FADE_KEY_COL2) == 0xaa) {
 717                 v4l_info(client, "saa7129 found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name);
 718                 saa7127_write(client, SAA7129_REG_FADE_KEY_COL2, read_result);
 719                 saa7127_write_inittab(client, saa7129_init_config_extra);
 720                 state->ident = V4L2_IDENT_SAA7129;
 721         } else {
 722                 v4l_info(client, "saa7127 found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name);
 723                 state->ident = V4L2_IDENT_SAA7127;
 724         }
 725         return 0;
 726 }
 727
 728 /* ----------------------------------------------------------------------- */
 729
 730 static int saa7127_remove(struct i2c_client *client)
 731 {
 732         /* Turn off TV output */
 733         saa7127_set_video_enable(client, 0);
 734         kfree(i2c_get_clientdata(client));
 735         return 0;
 736 }
 737
 738 /* ----------------------------------------------------------------------- */
 739
 740 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
 741         .name = "saa7127",
 742         .driverid = I2C_DRIVERID_SAA7127,
 743         .command = saa7127_command,
 744         .probe = saa7127_probe,
 745         .remove = saa7127_remove,
 746 };
 747