err.no Git - linux-2.6/blob - drivers/media/video/cx25840/cx25840-core.c

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