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