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   1 /* cx25840 - Conexant CX25840 audio/video decoder driver
   2  *
   3  * Copyright (C) 2004 Ulf Eklund
   4  *
   5  * Based on the saa7115 driver and on the first verison of Chris Kennedy's
   6  * cx25840 driver.
   7  *
   8  * Changes by Tyler Trafford <tatrafford@comcast.net>
   9  *    - cleanup/rewrite for V4L2 API (2005)
  10  *
  11  * VBI support by Hans Verkuil <hverkuil@xs4all.nl>.
  12  *
  13  * NTSC sliced VBI support by Christopher Neufeld <television@cneufeld.ca>
  14  * with additional fixes by Hans Verkuil <hverkuil@xs4all.nl>.
  15  *
  16  * This program is free software; you can redistribute it and/or
  17  * modify it under the terms of the GNU General Public License
  18  * as published by the Free Software Foundation; either version 2
  19  * of the License, or (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  29  */
  30
  31
  32 #include <linux/kernel.h>
  33 #include <linux/module.h>
  34 #include <linux/slab.h>
  35 #include <linux/videodev2.h>
  36 #include <linux/i2c.h>
  37 #include <linux/delay.h>
  38 #include <media/v4l2-common.h>
  39 #include <media/v4l2-chip-ident.h>
  40 #include <media/cx25840.h>
  41
  42 #include "cx25840-core.h"
  43
  44 MODULE_DESCRIPTION("Conexant CX25840 audio/video decoder driver");
  45 MODULE_AUTHOR("Ulf Eklund, Chris Kennedy, Hans Verkuil, Tyler Trafford");
  46 MODULE_LICENSE("GPL");
  47
  48 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
  49
  50
  51 int cx25840_debug;
  52
  53 module_param_named(debug,cx25840_debug, int, 0644);
  54
  55 MODULE_PARM_DESC(debug, "Debugging messages [0=Off (default) 1=On]");
  56
  57 I2C_CLIENT_INSMOD;
  58
  59 /* ----------------------------------------------------------------------- */
  60
  61 int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
  62 {
  63         u8 buffer[3];
  64         buffer[0] = addr >> 8;
  65         buffer[1] = addr & 0xff;
  66         buffer[2] = value;
  67         return i2c_master_send(client, buffer, 3);
  68 }
  69
  70 int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
  71 {
  72         u8 buffer[6];
  73         buffer[0] = addr >> 8;
  74         buffer[1] = addr & 0xff;
  75         buffer[2] = value >> 24;
  76         buffer[3] = (value >> 16) & 0xff;
  77         buffer[4] = (value >> 8) & 0xff;
  78         buffer[5] = value & 0xff;
  79         return i2c_master_send(client, buffer, 6);
  80 }
  81
  82 u8 cx25840_read(struct i2c_client * client, u16 addr)
  83 {
  84         u8 buffer[2];
  85         buffer[0] = addr >> 8;
  86         buffer[1] = addr & 0xff;
  87
  88         if (i2c_master_send(client, buffer, 2) < 2)
  89                 return 0;
  90
  91         if (i2c_master_recv(client, buffer, 1) < 1)
  92                 return 0;
  93
  94         return buffer[0];
  95 }
  96
  97 u32 cx25840_read4(struct i2c_client * client, u16 addr)
  98 {
  99         u8 buffer[4];
 100         buffer[0] = addr >> 8;
 101         buffer[1] = addr & 0xff;
 102
 103         if (i2c_master_send(client, buffer, 2) < 2)
 104                 return 0;
 105
 106         if (i2c_master_recv(client, buffer, 4) < 4)
 107                 return 0;
 108
 109         return (buffer[3] << 24) | (buffer[2] << 16) |
 110             (buffer[1] << 8) | buffer[0];
 111 }
 112
 113 int cx25840_and_or(struct i2c_client *client, u16 addr, unsigned and_mask,
 114                    u8 or_value)
 115 {
 116         return cx25840_write(client, addr,
 117                              (cx25840_read(client, addr) & and_mask) |
 118                              or_value);
 119 }
 120
 121 /* ----------------------------------------------------------------------- */
 122
 123 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 124                                                 enum cx25840_audio_input aud_input);
 125 static void log_audio_status(struct i2c_client *client);
 126 static void log_video_status(struct i2c_client *client);
 127
 128 /* ----------------------------------------------------------------------- */
 129
 130 static void init_dll1(struct i2c_client *client)
 131 {
 132         /* This is the Hauppauge sequence used to
 133          * initialize the Delay Lock Loop 1 (ADC DLL). */
 134         cx25840_write(client, 0x159, 0x23);
 135         cx25840_write(client, 0x15a, 0x87);
 136         cx25840_write(client, 0x15b, 0x06);
 137         udelay(10);
 138         cx25840_write(client, 0x159, 0xe1);
 139         udelay(10);
 140         cx25840_write(client, 0x15a, 0x86);
 141         cx25840_write(client, 0x159, 0xe0);
 142         cx25840_write(client, 0x159, 0xe1);
 143         cx25840_write(client, 0x15b, 0x10);
 144 }
 145
 146 static void init_dll2(struct i2c_client *client)
 147 {
 148         /* This is the Hauppauge sequence used to
 149          * initialize the Delay Lock Loop 2 (ADC DLL). */
 150         cx25840_write(client, 0x15d, 0xe3);
 151         cx25840_write(client, 0x15e, 0x86);
 152         cx25840_write(client, 0x15f, 0x06);
 153         udelay(10);
 154         cx25840_write(client, 0x15d, 0xe1);
 155         cx25840_write(client, 0x15d, 0xe0);
 156         cx25840_write(client, 0x15d, 0xe1);
 157 }
 158
 159 static void cx25836_initialize(struct i2c_client *client)
 160 {
 161         /* reset configuration is described on page 3-77 of the CX25836 datasheet */
 162         /* 2. */
 163         cx25840_and_or(client, 0x000, ~0x01, 0x01);
 164         cx25840_and_or(client, 0x000, ~0x01, 0x00);
 165         /* 3a. */
 166         cx25840_and_or(client, 0x15a, ~0x70, 0x00);
 167         /* 3b. */
 168         cx25840_and_or(client, 0x15b, ~0x1e, 0x06);
 169         /* 3c. */
 170         cx25840_and_or(client, 0x159, ~0x02, 0x02);
 171         /* 3d. */
 172         udelay(10);
 173         /* 3e. */
 174         cx25840_and_or(client, 0x159, ~0x02, 0x00);
 175         /* 3f. */
 176         cx25840_and_or(client, 0x159, ~0xc0, 0xc0);
 177         /* 3g. */
 178         cx25840_and_or(client, 0x159, ~0x01, 0x00);
 179         cx25840_and_or(client, 0x159, ~0x01, 0x01);
 180         /* 3h. */
 181         cx25840_and_or(client, 0x15b, ~0x1e, 0x10);
 182 }
 183
 184 static void cx25840_work_handler(struct work_struct *work)
 185 {
 186         struct cx25840_state *state = container_of(work, struct cx25840_state, fw_work);
 187         cx25840_loadfw(state->c);
 188         wake_up(&state->fw_wait);
 189 }
 190
 191 static void cx25840_initialize(struct i2c_client *client)
 192 {
 193         DEFINE_WAIT(wait);
 194         struct cx25840_state *state = i2c_get_clientdata(client);
 195         struct workqueue_struct *q;
 196
 197         /* datasheet startup in numbered steps, refer to page 3-77 */
 198         /* 2. */
 199         cx25840_and_or(client, 0x803, ~0x10, 0x00);
 200         /* The default of this register should be 4, but I get 0 instead.
 201          * Set this register to 4 manually. */
 202         cx25840_write(client, 0x000, 0x04);
 203         /* 3. */
 204         init_dll1(client);
 205         init_dll2(client);
 206         cx25840_write(client, 0x136, 0x0a);
 207         /* 4. */
 208         cx25840_write(client, 0x13c, 0x01);
 209         cx25840_write(client, 0x13c, 0x00);
 210         /* 5. */
 211         /* Do the firmware load in a work handler to prevent.
 212            Otherwise the kernel is blocked waiting for the
 213            bit-banging i2c interface to finish uploading the
 214            firmware. */
 215         INIT_WORK(&state->fw_work, cx25840_work_handler);
 216         init_waitqueue_head(&state->fw_wait);
 217         q = create_singlethread_workqueue("cx25840_fw");
 218         prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
 219         queue_work(q, &state->fw_work);
 220         schedule();
 221         finish_wait(&state->fw_wait, &wait);
 222         destroy_workqueue(q);
 223
 224         /* 6. */
 225         cx25840_write(client, 0x115, 0x8c);
 226         cx25840_write(client, 0x116, 0x07);
 227         cx25840_write(client, 0x118, 0x02);
 228         /* 7. */
 229         cx25840_write(client, 0x4a5, 0x80);
 230         cx25840_write(client, 0x4a5, 0x00);
 231         cx25840_write(client, 0x402, 0x00);
 232         /* 8. */
 233         cx25840_and_or(client, 0x401, ~0x18, 0);
 234         cx25840_and_or(client, 0x4a2, ~0x10, 0x10);
 235         /* steps 8c and 8d are done in change_input() */
 236         /* 10. */
 237         cx25840_write(client, 0x8d3, 0x1f);
 238         cx25840_write(client, 0x8e3, 0x03);
 239
 240         cx25840_vbi_setup(client);
 241
 242         /* trial and error says these are needed to get audio */
 243         cx25840_write(client, 0x914, 0xa0);
 244         cx25840_write(client, 0x918, 0xa0);
 245         cx25840_write(client, 0x919, 0x01);
 246
 247         /* stereo prefered */
 248         cx25840_write(client, 0x809, 0x04);
 249         /* AC97 shift */
 250         cx25840_write(client, 0x8cf, 0x0f);
 251
 252         /* (re)set input */
 253         set_input(client, state->vid_input, state->aud_input);
 254
 255         /* start microcontroller */
 256         cx25840_and_or(client, 0x803, ~0x10, 0x10);
 257 }
 258
 259 /* ----------------------------------------------------------------------- */
 260
 261 static void input_change(struct i2c_client *client)
 262 {
 263         struct cx25840_state *state = i2c_get_clientdata(client);
 264         v4l2_std_id std = cx25840_get_v4lstd(client);
 265
 266         /* Follow step 8c and 8d of section 3.16 in the cx25840 datasheet */
 267         if (std & V4L2_STD_SECAM) {
 268                 cx25840_write(client, 0x402, 0);
 269         }
 270         else {
 271                 cx25840_write(client, 0x402, 0x04);
 272                 cx25840_write(client, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
 273         }
 274         cx25840_and_or(client, 0x401, ~0x60, 0);
 275         cx25840_and_or(client, 0x401, ~0x60, 0x60);
 276         cx25840_and_or(client, 0x810, ~0x01, 1);
 277
 278         if (state->radio) {
 279                 cx25840_write(client, 0x808, 0xf9);
 280                 cx25840_write(client, 0x80b, 0x00);
 281         }
 282         else if (std & V4L2_STD_525_60) {
 283                 /* Certain Hauppauge PVR150 models have a hardware bug
 284                    that causes audio to drop out. For these models the
 285                    audio standard must be set explicitly.
 286                    To be precise: it affects cards with tuner models
 287                    85, 99 and 112 (model numbers from tveeprom). */
 288                 int hw_fix = state->pvr150_workaround;
 289
 290                 if (std == V4L2_STD_NTSC_M_JP) {
 291                         /* Japan uses EIAJ audio standard */
 292                         cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
 293                 } else if (std == V4L2_STD_NTSC_M_KR) {
 294                         /* South Korea uses A2 audio standard */
 295                         cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
 296                 } else {
 297                         /* Others use the BTSC audio standard */
 298                         cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
 299                 }
 300                 cx25840_write(client, 0x80b, 0x00);
 301         } else if (std & V4L2_STD_PAL) {
 302                 /* Follow tuner change procedure for PAL */
 303                 cx25840_write(client, 0x808, 0xff);
 304                 cx25840_write(client, 0x80b, 0x10);
 305         } else if (std & V4L2_STD_SECAM) {
 306                 /* Select autodetect for SECAM */
 307                 cx25840_write(client, 0x808, 0xff);
 308                 cx25840_write(client, 0x80b, 0x10);
 309         }
 310
 311         cx25840_and_or(client, 0x810, ~0x01, 0);
 312 }
 313
 314 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 315                                                 enum cx25840_audio_input aud_input)
 316 {
 317         struct cx25840_state *state = i2c_get_clientdata(client);
 318         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
 319                            vid_input <= CX25840_COMPOSITE8);
 320         u8 reg;
 321
 322         v4l_dbg(1, cx25840_debug, client, "decoder set video input %d, audio input %d\n",
 323                         vid_input, aud_input);
 324
 325         if (is_composite) {
 326                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
 327         } else {
 328                 int luma = vid_input & 0xf0;
 329                 int chroma = vid_input & 0xf00;
 330
 331                 if ((vid_input & ~0xff0) ||
 332                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
 333                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
 334                         v4l_err(client, "0x%04x is not a valid video input!\n", vid_input);
 335                         return -EINVAL;
 336                 }
 337                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
 338                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
 339                         reg &= 0x3f;
 340                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
 341                 } else {
 342                         reg &= 0xcf;
 343                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
 344                 }
 345         }
 346
 347         switch (aud_input) {
 348         case CX25840_AUDIO_SERIAL:
 349                 /* do nothing, use serial audio input */
 350                 break;
 351         case CX25840_AUDIO4: reg &= ~0x30; break;
 352         case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
 353         case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
 354         case CX25840_AUDIO7: reg &= ~0xc0; break;
 355         case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
 356
 357         default:
 358                 v4l_err(client, "0x%04x is not a valid audio input!\n", aud_input);
 359                 return -EINVAL;
 360         }
 361
 362         cx25840_write(client, 0x103, reg);
 363         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
 364         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
 365         /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
 366         cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
 367         /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
 368         if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
 369                 cx25840_and_or(client, 0x102, ~0x4, 4);
 370         else
 371                 cx25840_and_or(client, 0x102, ~0x4, 0);
 372
 373         state->vid_input = vid_input;
 374         state->aud_input = aud_input;
 375         if (!state->is_cx25836) {
 376                 cx25840_audio_set_path(client);
 377                 input_change(client);
 378         }
 379         return 0;
 380 }
 381
 382 /* ----------------------------------------------------------------------- */
 383
 384 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
 385 {
 386         u8 fmt=0;       /* zero is autodetect */
 387
 388         /* First tests should be against specific std */
 389         if (std == V4L2_STD_NTSC_M_JP) {
 390                 fmt=0x2;
 391         } else if (std == V4L2_STD_NTSC_443) {
 392                 fmt=0x3;
 393         } else if (std == V4L2_STD_PAL_M) {
 394                 fmt=0x5;
 395         } else if (std == V4L2_STD_PAL_N) {
 396                 fmt=0x6;
 397         } else if (std == V4L2_STD_PAL_Nc) {
 398                 fmt=0x7;
 399         } else if (std == V4L2_STD_PAL_60) {
 400                 fmt=0x8;
 401         } else {
 402                 /* Then, test against generic ones */
 403                 if (std & V4L2_STD_NTSC) {
 404                         fmt=0x1;
 405                 } else if (std & V4L2_STD_PAL) {
 406                         fmt=0x4;
 407                 } else if (std & V4L2_STD_SECAM) {
 408                         fmt=0xc;
 409                 }
 410         }
 411
 412         v4l_dbg(1, cx25840_debug, client, "changing video std to fmt %i\n",fmt);
 413
 414         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
 415            Without this PAL may display a vertical ghosting effect.
 416            This happens for example with the Yuan MPC622. */
 417         if (fmt >= 4 && fmt < 8) {
 418                 /* Set format to NTSC-M */
 419                 cx25840_and_or(client, 0x400, ~0xf, 1);
 420                 /* Turn off LCOMB */
 421                 cx25840_and_or(client, 0x47b, ~6, 0);
 422         }
 423         cx25840_and_or(client, 0x400, ~0xf, fmt);
 424         cx25840_vbi_setup(client);
 425         return 0;
 426 }
 427
 428 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
 429 {
 430         struct cx25840_state *state = i2c_get_clientdata(client);
 431         /* check VID_FMT_SEL first */
 432         u8 fmt = cx25840_read(client, 0x400) & 0xf;
 433
 434         if (!fmt) {
 435                 /* check AFD_FMT_STAT if set to autodetect */
 436                 fmt = cx25840_read(client, 0x40d) & 0xf;
 437         }
 438
 439         switch (fmt) {
 440         case 0x1:
 441         {
 442                 /* if the audio std is A2-M, then this is the South Korean
 443                    NTSC standard */
 444                 if (!state->is_cx25836 && cx25840_read(client, 0x805) == 2)
 445                         return V4L2_STD_NTSC_M_KR;
 446                 return V4L2_STD_NTSC_M;
 447         }
 448         case 0x2: return V4L2_STD_NTSC_M_JP;
 449         case 0x3: return V4L2_STD_NTSC_443;
 450         case 0x4: return V4L2_STD_PAL;
 451         case 0x5: return V4L2_STD_PAL_M;
 452         case 0x6: return V4L2_STD_PAL_N;
 453         case 0x7: return V4L2_STD_PAL_Nc;
 454         case 0x8: return V4L2_STD_PAL_60;
 455         case 0xc: return V4L2_STD_SECAM;
 456         default: return V4L2_STD_UNKNOWN;
 457         }
 458 }
 459
 460 /* ----------------------------------------------------------------------- */
 461
 462 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 463 {
 464         struct cx25840_state *state = i2c_get_clientdata(client);
 465
 466         switch (ctrl->id) {
 467         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 468                 state->pvr150_workaround = ctrl->value;
 469                 set_input(client, state->vid_input, state->aud_input);
 470                 break;
 471
 472         case V4L2_CID_BRIGHTNESS:
 473                 if (ctrl->value < 0 || ctrl->value > 255) {
 474                         v4l_err(client, "invalid brightness setting %d\n",
 475                                     ctrl->value);
 476                         return -ERANGE;
 477                 }
 478
 479                 cx25840_write(client, 0x414, ctrl->value - 128);
 480                 break;
 481
 482         case V4L2_CID_CONTRAST:
 483                 if (ctrl->value < 0 || ctrl->value > 127) {
 484                         v4l_err(client, "invalid contrast setting %d\n",
 485                                     ctrl->value);
 486                         return -ERANGE;
 487                 }
 488
 489                 cx25840_write(client, 0x415, ctrl->value << 1);
 490                 break;
 491
 492         case V4L2_CID_SATURATION:
 493                 if (ctrl->value < 0 || ctrl->value > 127) {
 494                         v4l_err(client, "invalid saturation setting %d\n",
 495                                     ctrl->value);
 496                         return -ERANGE;
 497                 }
 498
 499                 cx25840_write(client, 0x420, ctrl->value << 1);
 500                 cx25840_write(client, 0x421, ctrl->value << 1);
 501                 break;
 502
 503         case V4L2_CID_HUE:
 504                 if (ctrl->value < -127 || ctrl->value > 127) {
 505                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
 506                         return -ERANGE;
 507                 }
 508
 509                 cx25840_write(client, 0x422, ctrl->value);
 510                 break;
 511
 512         case V4L2_CID_AUDIO_VOLUME:
 513         case V4L2_CID_AUDIO_BASS:
 514         case V4L2_CID_AUDIO_TREBLE:
 515         case V4L2_CID_AUDIO_BALANCE:
 516         case V4L2_CID_AUDIO_MUTE:
 517                 if (state->is_cx25836)
 518                         return -EINVAL;
 519                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 520
 521         default:
 522                 return -EINVAL;
 523         }
 524
 525         return 0;
 526 }
 527
 528 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 529 {
 530         struct cx25840_state *state = i2c_get_clientdata(client);
 531
 532         switch (ctrl->id) {
 533         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 534                 ctrl->value = state->pvr150_workaround;
 535                 break;
 536         case V4L2_CID_BRIGHTNESS:
 537                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
 538                 break;
 539         case V4L2_CID_CONTRAST:
 540                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 541                 break;
 542         case V4L2_CID_SATURATION:
 543                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 544                 break;
 545         case V4L2_CID_HUE:
 546                 ctrl->value = (s8)cx25840_read(client, 0x422);
 547                 break;
 548         case V4L2_CID_AUDIO_VOLUME:
 549         case V4L2_CID_AUDIO_BASS:
 550         case V4L2_CID_AUDIO_TREBLE:
 551         case V4L2_CID_AUDIO_BALANCE:
 552         case V4L2_CID_AUDIO_MUTE:
 553                 if (state->is_cx25836)
 554                         return -EINVAL;
 555                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 556         default:
 557                 return -EINVAL;
 558         }
 559
 560         return 0;
 561 }
 562
 563 /* ----------------------------------------------------------------------- */
 564
 565 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 566 {
 567         switch (fmt->type) {
 568         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 569                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 570         default:
 571                 return -EINVAL;
 572         }
 573
 574         return 0;
 575 }
 576
 577 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 578 {
 579         struct v4l2_pix_format *pix;
 580         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 581         int is_50Hz = !(cx25840_get_v4lstd(client) & V4L2_STD_525_60);
 582
 583         switch (fmt->type) {
 584         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 585                 pix = &(fmt->fmt.pix);
 586
 587                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 588                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 589
 590                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 591                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 592
 593                 Vlines = pix->height + (is_50Hz ? 4 : 7);
 594
 595                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 596                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 597                         v4l_err(client, "%dx%d is not a valid size!\n",
 598                                     pix->width, pix->height);
 599                         return -ERANGE;
 600                 }
 601
 602                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 603                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 604                 VSC &= 0x1fff;
 605
 606                 if (pix->width >= 385)
 607                         filter = 0;
 608                 else if (pix->width > 192)
 609                         filter = 1;
 610                 else if (pix->width > 96)
 611                         filter = 2;
 612                 else
 613                         filter = 3;
 614
 615                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
 616                             pix->width, pix->height, HSC, VSC);
 617
 618                 /* HSCALE=HSC */
 619                 cx25840_write(client, 0x418, HSC & 0xff);
 620                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 621                 cx25840_write(client, 0x41a, HSC >> 16);
 622                 /* VSCALE=VSC */
 623                 cx25840_write(client, 0x41c, VSC & 0xff);
 624                 cx25840_write(client, 0x41d, VSC >> 8);
 625                 /* VS_INTRLACE=1 VFILT=filter */
 626                 cx25840_write(client, 0x41e, 0x8 | filter);
 627                 break;
 628
 629         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 630                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 631
 632         case V4L2_BUF_TYPE_VBI_CAPTURE:
 633                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 634
 635         default:
 636                 return -EINVAL;
 637         }
 638
 639         return 0;
 640 }
 641
 642 /* ----------------------------------------------------------------------- */
 643
 644 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 645                            void *arg)
 646 {
 647         struct cx25840_state *state = i2c_get_clientdata(client);
 648         struct v4l2_tuner *vt = arg;
 649         struct v4l2_routing *route = arg;
 650
 651         /* ignore these commands */
 652         switch (cmd) {
 653                 case TUNER_SET_TYPE_ADDR:
 654                         return 0;
 655         }
 656
 657         if (!state->is_initialized) {
 658                 v4l_dbg(1, cx25840_debug, client, "cmd %08x triggered fw load\n", cmd);
 659                 /* initialize on first use */
 660                 state->is_initialized = 1;
 661                 if (state->is_cx25836)
 662                         cx25836_initialize(client);
 663                 else
 664                         cx25840_initialize(client);
 665         }
 666
 667         switch (cmd) {
 668 #ifdef CONFIG_VIDEO_ADV_DEBUG
 669         /* ioctls to allow direct access to the
 670          * cx25840 registers for testing */
 671         case VIDIOC_DBG_G_REGISTER:
 672         case VIDIOC_DBG_S_REGISTER:
 673         {
 674                 struct v4l2_register *reg = arg;
 675
 676                 if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
 677                         return -EINVAL;
 678                 if (!capable(CAP_SYS_ADMIN))
 679                         return -EPERM;
 680                 if (cmd == VIDIOC_DBG_G_REGISTER)
 681                         reg->val = cx25840_read(client, reg->reg & 0x0fff);
 682                 else
 683                         cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 684                 break;
 685         }
 686 #endif
 687
 688         case VIDIOC_INT_DECODE_VBI_LINE:
 689                 return cx25840_vbi(client, cmd, arg);
 690
 691         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 692                 return cx25840_audio(client, cmd, arg);
 693
 694         case VIDIOC_STREAMON:
 695                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
 696                 cx25840_write(client, 0x115, state->is_cx25836 ? 0x0c : 0x8c);
 697                 cx25840_write(client, 0x116, state->is_cx25836 ? 0x04 : 0x07);
 698                 break;
 699
 700         case VIDIOC_STREAMOFF:
 701                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
 702                 cx25840_write(client, 0x115, 0x00);
 703                 cx25840_write(client, 0x116, 0x00);
 704                 break;
 705
 706         case VIDIOC_LOG_STATUS:
 707                 log_video_status(client);
 708                 if (!state->is_cx25836)
 709                         log_audio_status(client);
 710                 break;
 711
 712         case VIDIOC_G_CTRL:
 713                 return get_v4lctrl(client, (struct v4l2_control *)arg);
 714
 715         case VIDIOC_S_CTRL:
 716                 return set_v4lctrl(client, (struct v4l2_control *)arg);
 717
 718         case VIDIOC_QUERYCTRL:
 719         {
 720                 struct v4l2_queryctrl *qc = arg;
 721
 722                 switch (qc->id) {
 723                         case V4L2_CID_BRIGHTNESS:
 724                         case V4L2_CID_CONTRAST:
 725                         case V4L2_CID_SATURATION:
 726                         case V4L2_CID_HUE:
 727                                 return v4l2_ctrl_query_fill_std(qc);
 728                         default:
 729                                 break;
 730                 }
 731                 if (state->is_cx25836)
 732                         return -EINVAL;
 733
 734                 switch (qc->id) {
 735                         case V4L2_CID_AUDIO_VOLUME:
 736                         case V4L2_CID_AUDIO_MUTE:
 737                         case V4L2_CID_AUDIO_BALANCE:
 738                         case V4L2_CID_AUDIO_BASS:
 739                         case V4L2_CID_AUDIO_TREBLE:
 740                                 return v4l2_ctrl_query_fill_std(qc);
 741                         default:
 742                                 return -EINVAL;
 743                 }
 744                 return -EINVAL;
 745         }
 746
 747         case VIDIOC_G_STD:
 748                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
 749                 break;
 750
 751         case VIDIOC_S_STD:
 752                 state->radio = 0;
 753                 return set_v4lstd(client, *(v4l2_std_id *)arg);
 754
 755         case AUDC_SET_RADIO:
 756                 state->radio = 1;
 757                 break;
 758
 759         case VIDIOC_INT_G_VIDEO_ROUTING:
 760                 route->input = state->vid_input;
 761                 route->output = 0;
 762                 break;
 763
 764         case VIDIOC_INT_S_VIDEO_ROUTING:
 765                 return set_input(client, route->input, state->aud_input);
 766
 767         case VIDIOC_INT_G_AUDIO_ROUTING:
 768                 if (state->is_cx25836)
 769                         return -EINVAL;
 770                 route->input = state->aud_input;
 771                 route->output = 0;
 772                 break;
 773
 774         case VIDIOC_INT_S_AUDIO_ROUTING:
 775                 if (state->is_cx25836)
 776                         return -EINVAL;
 777                 return set_input(client, state->vid_input, route->input);
 778
 779         case VIDIOC_S_FREQUENCY:
 780                 if (!state->is_cx25836) {
 781                         input_change(client);
 782                 }
 783                 break;
 784
 785         case VIDIOC_G_TUNER:
 786         {
 787                 u8 vpres = cx25840_read(client, 0x40e) & 0x20;
 788                 u8 mode;
 789                 int val = 0;
 790
 791                 if (state->radio)
 792                         break;
 793
 794                 vt->signal = vpres ? 0xffff : 0x0;
 795                 if (state->is_cx25836)
 796                         break;
 797
 798                 vt->capability |=
 799                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
 800                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
 801
 802                 mode = cx25840_read(client, 0x804);
 803
 804                 /* get rxsubchans and audmode */
 805                 if ((mode & 0xf) == 1)
 806                         val |= V4L2_TUNER_SUB_STEREO;
 807                 else
 808                         val |= V4L2_TUNER_SUB_MONO;
 809
 810                 if (mode == 2 || mode == 4)
 811                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 812
 813                 if (mode & 0x10)
 814                         val |= V4L2_TUNER_SUB_SAP;
 815
 816                 vt->rxsubchans = val;
 817                 vt->audmode = state->audmode;
 818                 break;
 819         }
 820
 821         case VIDIOC_S_TUNER:
 822                 if (state->radio || state->is_cx25836)
 823                         break;
 824
 825                 switch (vt->audmode) {
 826                 case V4L2_TUNER_MODE_MONO:
 827                         /* mono      -> mono
 828                            stereo    -> mono
 829                            bilingual -> lang1 */
 830                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
 831                         break;
 832                 case V4L2_TUNER_MODE_STEREO:
 833                 case V4L2_TUNER_MODE_LANG1:
 834                         /* mono      -> mono
 835                            stereo    -> stereo
 836                            bilingual -> lang1 */
 837                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
 838                         break;
 839                 case V4L2_TUNER_MODE_LANG1_LANG2:
 840                         /* mono      -> mono
 841                            stereo    -> stereo
 842                            bilingual -> lang1/lang2 */
 843                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
 844                         break;
 845                 case V4L2_TUNER_MODE_LANG2:
 846                         /* mono      -> mono
 847                            stereo    -> stereo
 848                            bilingual -> lang2 */
 849                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
 850                         break;
 851                 default:
 852                         return -EINVAL;
 853                 }
 854                 state->audmode = vt->audmode;
 855                 break;
 856
 857         case VIDIOC_G_FMT:
 858                 return get_v4lfmt(client, (struct v4l2_format *)arg);
 859
 860         case VIDIOC_S_FMT:
 861                 return set_v4lfmt(client, (struct v4l2_format *)arg);
 862
 863         case VIDIOC_INT_RESET:
 864                 if (state->is_cx25836)
 865                         cx25836_initialize(client);
 866                 else
 867                         cx25840_initialize(client);
 868                 break;
 869
 870         case VIDIOC_G_CHIP_IDENT:
 871                 return v4l2_chip_ident_i2c_client(client, arg, state->id, state->rev);
 872
 873         default:
 874                 return -EINVAL;
 875         }
 876
 877         return 0;
 878 }
 879
 880 /* ----------------------------------------------------------------------- */
 881
 882 static struct i2c_driver i2c_driver_cx25840;
 883
 884 static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
 885                                  int kind)
 886 {
 887         struct i2c_client *client;
 888         struct cx25840_state *state;
 889         u32 id;
 890         u16 device_id;
 891
 892         /* Check if the adapter supports the needed features
 893          * Not until kernel version 2.6.11 did the bit-algo
 894          * correctly report that it would do an I2C-level xfer */
 895         if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
 896                 return 0;
 897
 898         client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 899         if (client == 0)
 900                 return -ENOMEM;
 901
 902         client->addr = address;
 903         client->adapter = adapter;
 904         client->driver = &i2c_driver_cx25840;
 905         snprintf(client->name, sizeof(client->name) - 1, "cx25840");
 906
 907         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", client->addr << 1);
 908
 909         device_id = cx25840_read(client, 0x101) << 8;
 910         device_id |= cx25840_read(client, 0x100);
 911
 912         /* The high byte of the device ID should be
 913          * 0x83 for the cx2583x and 0x84 for the cx2584x */
 914         if ((device_id & 0xff00) == 0x8300) {
 915                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
 916         }
 917         else if ((device_id & 0xff00) == 0x8400) {
 918                 id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
 919         }
 920         else {
 921                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
 922                 kfree(client);
 923                 return 0;
 924         }
 925
 926         state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
 927         if (state == NULL) {
 928                 kfree(client);
 929                 return -ENOMEM;
 930         }
 931
 932         /* Note: revision '(device_id & 0x0f) == 2' was never built. The
 933            marking skips from 0x1 == 22 to 0x3 == 23. */
 934         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
 935                     (device_id & 0xfff0) >> 4,
 936                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : (device_id & 0x0f),
 937                     client->addr << 1, client->adapter->name);
 938
 939         i2c_set_clientdata(client, state);
 940         state->c = client;
 941         state->is_cx25836 = ((device_id & 0xff00) == 0x8300);
 942         state->vid_input = CX25840_COMPOSITE7;
 943         state->aud_input = CX25840_AUDIO8;
 944         state->audclk_freq = 48000;
 945         state->pvr150_workaround = 0;
 946         state->audmode = V4L2_TUNER_MODE_LANG1;
 947         state->unmute_volume = -1;
 948         state->vbi_line_offset = 8;
 949         state->id = id;
 950         state->rev = device_id;
 951
 952         i2c_attach_client(client);
 953
 954         return 0;
 955 }
 956
 957 static int cx25840_attach_adapter(struct i2c_adapter *adapter)
 958 {
 959         if (adapter->class & I2C_CLASS_TV_ANALOG)
 960                 return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
 961         return 0;
 962 }
 963
 964 static int cx25840_detach_client(struct i2c_client *client)
 965 {
 966         struct cx25840_state *state = i2c_get_clientdata(client);
 967         int err;
 968
 969         err = i2c_detach_client(client);
 970         if (err) {
 971                 return err;
 972         }
 973
 974         kfree(state);
 975         kfree(client);
 976
 977         return 0;
 978 }
 979
 980 /* ----------------------------------------------------------------------- */
 981
 982 static struct i2c_driver i2c_driver_cx25840 = {
 983         .driver = {
 984                 .name = "cx25840",
 985         },
 986         .id = I2C_DRIVERID_CX25840,
 987         .attach_adapter = cx25840_attach_adapter,
 988         .detach_client = cx25840_detach_client,
 989         .command = cx25840_command,
 990 };
 991
 992
 993 static int __init m__init(void)
 994 {
 995         return i2c_add_driver(&i2c_driver_cx25840);
 996 }
 997
 998 static void __exit m__exit(void)
 999 {
1000         i2c_del_driver(&i2c_driver_cx25840);
1001 }
1002
1003 module_init(m__init);
1004 module_exit(m__exit);
1005
1006 /* ----------------------------------------------------------------------- */
1007
1008 static void log_video_status(struct i2c_client *client)
1009 {
1010         static const char *const fmt_strs[] = {
1011                 "0x0",
1012                 "NTSC-M", "NTSC-J", "NTSC-4.43",
1013                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
1014                 "0x9", "0xA", "0xB",
1015                 "SECAM",
1016                 "0xD", "0xE", "0xF"
1017         };
1018
1019         struct cx25840_state *state = i2c_get_clientdata(client);
1020         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
1021         u8 gen_stat1 = cx25840_read(client, 0x40d);
1022         u8 gen_stat2 = cx25840_read(client, 0x40e);
1023         int vid_input = state->vid_input;
1024
1025         v4l_info(client, "Video signal:              %spresent\n",
1026                     (gen_stat2 & 0x20) ? "" : "not ");
1027         v4l_info(client, "Detected format:           %s\n",
1028                     fmt_strs[gen_stat1 & 0xf]);
1029
1030         v4l_info(client, "Specified standard:        %s\n",
1031                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
1032
1033         if (vid_input >= CX25840_COMPOSITE1 &&
1034             vid_input <= CX25840_COMPOSITE8) {
1035                 v4l_info(client, "Specified video input:     Composite %d\n",
1036                         vid_input - CX25840_COMPOSITE1 + 1);
1037         } else {
1038                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
1039                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
1040         }
1041
1042         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
1043 }
1044
1045 /* ----------------------------------------------------------------------- */
1046
1047 static void log_audio_status(struct i2c_client *client)
1048 {
1049         struct cx25840_state *state = i2c_get_clientdata(client);
1050         u8 download_ctl = cx25840_read(client, 0x803);
1051         u8 mod_det_stat0 = cx25840_read(client, 0x804);
1052         u8 mod_det_stat1 = cx25840_read(client, 0x805);
1053         u8 audio_config = cx25840_read(client, 0x808);
1054         u8 pref_mode = cx25840_read(client, 0x809);
1055         u8 afc0 = cx25840_read(client, 0x80b);
1056         u8 mute_ctl = cx25840_read(client, 0x8d3);
1057         int aud_input = state->aud_input;
1058         char *p;
1059
1060         switch (mod_det_stat0) {
1061         case 0x00: p = "mono"; break;
1062         case 0x01: p = "stereo"; break;
1063         case 0x02: p = "dual"; break;
1064         case 0x04: p = "tri"; break;
1065         case 0x10: p = "mono with SAP"; break;
1066         case 0x11: p = "stereo with SAP"; break;
1067         case 0x12: p = "dual with SAP"; break;
1068         case 0x14: p = "tri with SAP"; break;
1069         case 0xfe: p = "forced mode"; break;
1070         default: p = "not defined";
1071         }
1072         v4l_info(client, "Detected audio mode:       %s\n", p);
1073
1074         switch (mod_det_stat1) {
1075         case 0x00: p = "not defined"; break;
1076         case 0x01: p = "EIAJ"; break;
1077         case 0x02: p = "A2-M"; break;
1078         case 0x03: p = "A2-BG"; break;
1079         case 0x04: p = "A2-DK1"; break;
1080         case 0x05: p = "A2-DK2"; break;
1081         case 0x06: p = "A2-DK3"; break;
1082         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
1083         case 0x08: p = "AM-L"; break;
1084         case 0x09: p = "NICAM-BG"; break;
1085         case 0x0a: p = "NICAM-DK"; break;
1086         case 0x0b: p = "NICAM-I"; break;
1087         case 0x0c: p = "NICAM-L"; break;
1088         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
1089         case 0x0e: p = "IF FM Radio"; break;
1090         case 0x0f: p = "BTSC"; break;
1091         case 0x10: p = "high-deviation FM"; break;
1092         case 0x11: p = "very high-deviation FM"; break;
1093         case 0xfd: p = "unknown audio standard"; break;
1094         case 0xfe: p = "forced audio standard"; break;
1095         case 0xff: p = "no detected audio standard"; break;
1096         default: p = "not defined";
1097         }
1098         v4l_info(client, "Detected audio standard:   %s\n", p);
1099         v4l_info(client, "Audio muted:               %s\n",
1100                     (state->unmute_volume >= 0) ? "yes" : "no");
1101         v4l_info(client, "Audio microcontroller:     %s\n",
1102                     (download_ctl & 0x10) ?
1103                                 ((mute_ctl & 0x2) ? "detecting" : "running") : "stopped");
1104
1105         switch (audio_config >> 4) {
1106         case 0x00: p = "undefined"; break;
1107         case 0x01: p = "BTSC"; break;
1108         case 0x02: p = "EIAJ"; break;
1109         case 0x03: p = "A2-M"; break;
1110         case 0x04: p = "A2-BG"; break;
1111         case 0x05: p = "A2-DK1"; break;
1112         case 0x06: p = "A2-DK2"; break;
1113         case 0x07: p = "A2-DK3"; break;
1114         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
1115         case 0x09: p = "AM-L"; break;
1116         case 0x0a: p = "NICAM-BG"; break;
1117         case 0x0b: p = "NICAM-DK"; break;
1118         case 0x0c: p = "NICAM-I"; break;
1119         case 0x0d: p = "NICAM-L"; break;
1120         case 0x0e: p = "FM radio"; break;
1121         case 0x0f: p = "automatic detection"; break;
1122         default: p = "undefined";
1123         }
1124         v4l_info(client, "Configured audio standard: %s\n", p);
1125
1126         if ((audio_config >> 4) < 0xF) {
1127                 switch (audio_config & 0xF) {
1128                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
1129                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
1130                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
1131                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
1132                 case 0x04: p = "STEREO"; break;
1133                 case 0x05: p = "DUAL1 (AB)"; break;
1134                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
1135                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
1136                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
1137                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
1138                 case 0x0a: p = "SAP"; break;
1139                 default: p = "undefined";
1140                 }
1141                 v4l_info(client, "Configured audio mode:     %s\n", p);
1142         } else {
1143                 switch (audio_config & 0xF) {
1144                 case 0x00: p = "BG"; break;
1145                 case 0x01: p = "DK1"; break;
1146                 case 0x02: p = "DK2"; break;
1147                 case 0x03: p = "DK3"; break;
1148                 case 0x04: p = "I"; break;
1149                 case 0x05: p = "L"; break;
1150                 case 0x06: p = "BTSC"; break;
1151                 case 0x07: p = "EIAJ"; break;
1152                 case 0x08: p = "A2-M"; break;
1153                 case 0x09: p = "FM Radio"; break;
1154                 case 0x0f: p = "automatic standard and mode detection"; break;
1155                 default: p = "undefined";
1156                 }
1157                 v4l_info(client, "Configured audio system:   %s\n", p);
1158         }
1159
1160         if (aud_input) {
1161                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
1162         } else {
1163                 v4l_info(client, "Specified audio input:     External\n");
1164         }
1165
1166         switch (pref_mode & 0xf) {
1167         case 0: p = "mono/language A"; break;
1168         case 1: p = "language B"; break;
1169         case 2: p = "language C"; break;
1170         case 3: p = "analog fallback"; break;
1171         case 4: p = "stereo"; break;
1172         case 5: p = "language AC"; break;
1173         case 6: p = "language BC"; break;
1174         case 7: p = "language AB"; break;
1175         default: p = "undefined";
1176         }
1177         v4l_info(client, "Preferred audio mode:      %s\n", p);
1178
1179         if ((audio_config & 0xf) == 0xf) {
1180                 switch ((afc0 >> 3) & 0x3) {
1181                 case 0: p = "system DK"; break;
1182                 case 1: p = "system L"; break;
1183                 case 2: p = "autodetect"; break;
1184                 default: p = "undefined";
1185                 }
1186                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
1187
1188                 switch (afc0 & 0x7) {
1189                 case 0: p = "chroma"; break;
1190                 case 1: p = "BTSC"; break;
1191                 case 2: p = "EIAJ"; break;
1192                 case 3: p = "A2-M"; break;
1193                 case 4: p = "autodetect"; break;
1194                 default: p = "undefined";
1195                 }
1196                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
1197         }
1198 }