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  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  26  */
  27
  28
  29 #include <linux/kernel.h>
  30 #include <linux/module.h>
  31 #include <linux/slab.h>
  32 #include <linux/videodev2.h>
  33 #include <linux/i2c.h>
  34 #include <media/v4l2-common.h>
  35 #include <media/cx25840.h>
  36
  37 #include "cx25840-core.h"
  38
  39 MODULE_DESCRIPTION("Conexant CX25840 audio/video decoder driver");
  40 MODULE_AUTHOR("Ulf Eklund, Chris Kennedy, Hans Verkuil, Tyler Trafford");
  41 MODULE_LICENSE("GPL");
  42
  43 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
  44
  45
  46 static int cx25840_debug;
  47
  48 module_param_named(debug,cx25840_debug, int, 0644);
  49
  50 MODULE_PARM_DESC(debug, "Debugging messages [0=Off (default) 1=On]");
  51
  52 I2C_CLIENT_INSMOD;
  53
  54 /* ----------------------------------------------------------------------- */
  55
  56 int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
  57 {
  58         u8 buffer[3];
  59         buffer[0] = addr >> 8;
  60         buffer[1] = addr & 0xff;
  61         buffer[2] = value;
  62         return i2c_master_send(client, buffer, 3);
  63 }
  64
  65 int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
  66 {
  67         u8 buffer[6];
  68         buffer[0] = addr >> 8;
  69         buffer[1] = addr & 0xff;
  70         buffer[2] = value >> 24;
  71         buffer[3] = (value >> 16) & 0xff;
  72         buffer[4] = (value >> 8) & 0xff;
  73         buffer[5] = value & 0xff;
  74         return i2c_master_send(client, buffer, 6);
  75 }
  76
  77 u8 cx25840_read(struct i2c_client * client, u16 addr)
  78 {
  79         u8 buffer[2];
  80         buffer[0] = addr >> 8;
  81         buffer[1] = addr & 0xff;
  82
  83         if (i2c_master_send(client, buffer, 2) < 2)
  84                 return 0;
  85
  86         if (i2c_master_recv(client, buffer, 1) < 1)
  87                 return 0;
  88
  89         return buffer[0];
  90 }
  91
  92 u32 cx25840_read4(struct i2c_client * client, u16 addr)
  93 {
  94         u8 buffer[4];
  95         buffer[0] = addr >> 8;
  96         buffer[1] = addr & 0xff;
  97
  98         if (i2c_master_send(client, buffer, 2) < 2)
  99                 return 0;
 100
 101         if (i2c_master_recv(client, buffer, 4) < 4)
 102                 return 0;
 103
 104         return (buffer[0] << 24) | (buffer[1] << 16) |
 105             (buffer[2] << 8) | buffer[3];
 106 }
 107
 108 int cx25840_and_or(struct i2c_client *client, u16 addr, unsigned and_mask,
 109                    u8 or_value)
 110 {
 111         return cx25840_write(client, addr,
 112                              (cx25840_read(client, addr) & and_mask) |
 113                              or_value);
 114 }
 115
 116 /* ----------------------------------------------------------------------- */
 117
 118 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 119                                                 enum cx25840_audio_input aud_input);
 120 static void log_audio_status(struct i2c_client *client);
 121 static void log_video_status(struct i2c_client *client);
 122
 123 /* ----------------------------------------------------------------------- */
 124
 125 static void init_dll1(struct i2c_client *client)
 126 {
 127         /* This is the Hauppauge sequence used to
 128          * initialize the Delay Lock Loop 1 (ADC DLL). */
 129         cx25840_write(client, 0x159, 0x23);
 130         cx25840_write(client, 0x15a, 0x87);
 131         cx25840_write(client, 0x15b, 0x06);
 132         cx25840_write(client, 0x159, 0xe1);
 133         cx25840_write(client, 0x15a, 0x86);
 134         cx25840_write(client, 0x159, 0xe0);
 135         cx25840_write(client, 0x159, 0xe1);
 136         cx25840_write(client, 0x15b, 0x10);
 137 }
 138
 139 static void init_dll2(struct i2c_client *client)
 140 {
 141         /* This is the Hauppauge sequence used to
 142          * initialize the Delay Lock Loop 2 (ADC DLL). */
 143         cx25840_write(client, 0x15d, 0xe3);
 144         cx25840_write(client, 0x15e, 0x86);
 145         cx25840_write(client, 0x15f, 0x06);
 146         cx25840_write(client, 0x15d, 0xe1);
 147         cx25840_write(client, 0x15d, 0xe0);
 148         cx25840_write(client, 0x15d, 0xe1);
 149 }
 150
 151 static void cx25836_initialize(struct i2c_client *client)
 152 {
 153         /* reset configuration is described on page 3-77 of the CX25836 datasheet */
 154         /* 2. */
 155         cx25840_and_or(client, 0x000, ~0x01, 0x01);
 156         cx25840_and_or(client, 0x000, ~0x01, 0x00);
 157         /* 3a. */
 158         cx25840_and_or(client, 0x15a, ~0x70, 0x00);
 159         /* 3b. */
 160         cx25840_and_or(client, 0x15b, ~0x1e, 0x06);
 161         /* 3c. */
 162         cx25840_and_or(client, 0x159, ~0x02, 0x02);
 163         /* 3d. */
 164         /* There should be a 10-us delay here, but since the
 165            i2c bus already has a 10-us delay we don't need to do
 166            anything */
 167         /* 3e. */
 168         cx25840_and_or(client, 0x159, ~0x02, 0x00);
 169         /* 3f. */
 170         cx25840_and_or(client, 0x159, ~0xc0, 0xc0);
 171         /* 3g. */
 172         cx25840_and_or(client, 0x159, ~0x01, 0x00);
 173         cx25840_and_or(client, 0x159, ~0x01, 0x01);
 174         /* 3h. */
 175         cx25840_and_or(client, 0x15b, ~0x1e, 0x10);
 176 }
 177
 178 static void cx25840_initialize(struct i2c_client *client, int loadfw)
 179 {
 180         struct cx25840_state *state = i2c_get_clientdata(client);
 181
 182         /* datasheet startup in numbered steps, refer to page 3-77 */
 183         /* 2. */
 184         cx25840_and_or(client, 0x803, ~0x10, 0x00);
 185         /* The default of this register should be 4, but I get 0 instead.
 186          * Set this register to 4 manually. */
 187         cx25840_write(client, 0x000, 0x04);
 188         /* 3. */
 189         init_dll1(client);
 190         init_dll2(client);
 191         cx25840_write(client, 0x136, 0x0a);
 192         /* 4. */
 193         cx25840_write(client, 0x13c, 0x01);
 194         cx25840_write(client, 0x13c, 0x00);
 195         /* 5. */
 196         if (loadfw)
 197                 cx25840_loadfw(client);
 198         /* 6. */
 199         cx25840_write(client, 0x115, 0x8c);
 200         cx25840_write(client, 0x116, 0x07);
 201         cx25840_write(client, 0x118, 0x02);
 202         /* 7. */
 203         cx25840_write(client, 0x4a5, 0x80);
 204         cx25840_write(client, 0x4a5, 0x00);
 205         cx25840_write(client, 0x402, 0x00);
 206         /* 8. */
 207         cx25840_and_or(client, 0x401, ~0x18, 0);
 208         cx25840_and_or(client, 0x4a2, ~0x10, 0x10);
 209         /* steps 8c and 8d are done in change_input() */
 210         /* 10. */
 211         cx25840_write(client, 0x8d3, 0x1f);
 212         cx25840_write(client, 0x8e3, 0x03);
 213
 214         cx25840_vbi_setup(client);
 215
 216         /* trial and error says these are needed to get audio */
 217         cx25840_write(client, 0x914, 0xa0);
 218         cx25840_write(client, 0x918, 0xa0);
 219         cx25840_write(client, 0x919, 0x01);
 220
 221         /* stereo prefered */
 222         cx25840_write(client, 0x809, 0x04);
 223         /* AC97 shift */
 224         cx25840_write(client, 0x8cf, 0x0f);
 225
 226         /* (re)set input */
 227         set_input(client, state->vid_input, state->aud_input);
 228
 229         /* start microcontroller */
 230         cx25840_and_or(client, 0x803, ~0x10, 0x10);
 231 }
 232
 233 /* ----------------------------------------------------------------------- */
 234
 235 static void input_change(struct i2c_client *client)
 236 {
 237         struct cx25840_state *state = i2c_get_clientdata(client);
 238         v4l2_std_id std = cx25840_get_v4lstd(client);
 239
 240         /* Follow step 8c and 8d of section 3.16 in the cx25840 datasheet */
 241         if (std & V4L2_STD_SECAM) {
 242                 cx25840_write(client, 0x402, 0);
 243         }
 244         else {
 245                 cx25840_write(client, 0x402, 0x04);
 246                 cx25840_write(client, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
 247         }
 248         cx25840_and_or(client, 0x401, ~0x60, 0);
 249         cx25840_and_or(client, 0x401, ~0x60, 0x60);
 250
 251         /* Note: perhaps V4L2_STD_PAL_M should be handled as V4L2_STD_NTSC
 252            instead of V4L2_STD_PAL. Someone needs to test this. */
 253         if (std & V4L2_STD_PAL) {
 254                 /* Follow tuner change procedure for PAL */
 255                 cx25840_write(client, 0x808, 0xff);
 256                 cx25840_write(client, 0x80b, 0x10);
 257         } else if (std & V4L2_STD_SECAM) {
 258                 /* Select autodetect for SECAM */
 259                 cx25840_write(client, 0x808, 0xff);
 260                 cx25840_write(client, 0x80b, 0x10);
 261         } else if (std & V4L2_STD_NTSC) {
 262                 /* Certain Hauppauge PVR150 models have a hardware bug
 263                    that causes audio to drop out. For these models the
 264                    audio standard must be set explicitly.
 265                    To be precise: it affects cards with tuner models
 266                    85, 99 and 112 (model numbers from tveeprom). */
 267                 int hw_fix = state->pvr150_workaround;
 268
 269                 if (std == V4L2_STD_NTSC_M_JP) {
 270                         /* Japan uses EIAJ audio standard */
 271                         cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
 272                 } else if (std == V4L2_STD_NTSC_M_KR) {
 273                         /* South Korea uses A2 audio standard */
 274                         cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
 275                 } else {
 276                         /* Others use the BTSC audio standard */
 277                         cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
 278                 }
 279                 cx25840_write(client, 0x80b, 0x00);
 280         }
 281
 282         if (cx25840_read(client, 0x803) & 0x10) {
 283                 /* restart audio decoder microcontroller */
 284                 cx25840_and_or(client, 0x803, ~0x10, 0x00);
 285                 cx25840_and_or(client, 0x803, ~0x10, 0x10);
 286         }
 287 }
 288
 289 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 290                                                 enum cx25840_audio_input aud_input)
 291 {
 292         struct cx25840_state *state = i2c_get_clientdata(client);
 293         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
 294                            vid_input <= CX25840_COMPOSITE8);
 295         u8 reg;
 296
 297         v4l_dbg(1, cx25840_debug, client, "decoder set video input %d, audio input %d\n",
 298                         vid_input, aud_input);
 299
 300         if (is_composite) {
 301                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
 302         } else {
 303                 int luma = vid_input & 0xf0;
 304                 int chroma = vid_input & 0xf00;
 305
 306                 if ((vid_input & ~0xff0) ||
 307                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
 308                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
 309                         v4l_err(client, "0x%04x is not a valid video input!\n", vid_input);
 310                         return -EINVAL;
 311                 }
 312                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
 313                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
 314                         reg &= 0x3f;
 315                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
 316                 } else {
 317                         reg &= 0xcf;
 318                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
 319                 }
 320         }
 321
 322         switch (aud_input) {
 323         case CX25840_AUDIO_SERIAL:
 324                 /* do nothing, use serial audio input */
 325                 break;
 326         case CX25840_AUDIO4: reg &= ~0x30; break;
 327         case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
 328         case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
 329         case CX25840_AUDIO7: reg &= ~0xc0; break;
 330         case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
 331
 332         default:
 333                 v4l_err(client, "0x%04x is not a valid audio input!\n", aud_input);
 334                 return -EINVAL;
 335         }
 336
 337         cx25840_write(client, 0x103, reg);
 338         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
 339         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
 340         /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
 341         cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
 342         /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
 343         if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
 344                 cx25840_and_or(client, 0x102, ~0x4, 4);
 345         else
 346                 cx25840_and_or(client, 0x102, ~0x4, 0);
 347
 348         state->vid_input = vid_input;
 349         state->aud_input = aud_input;
 350         if (!state->is_cx25836) {
 351                 cx25840_audio_set_path(client);
 352                 input_change(client);
 353         }
 354         return 0;
 355 }
 356
 357 /* ----------------------------------------------------------------------- */
 358
 359 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
 360 {
 361         u8 fmt=0;       /* zero is autodetect */
 362
 363         /* First tests should be against specific std */
 364         if (std == V4L2_STD_NTSC_M_JP) {
 365                 fmt=0x2;
 366         } else if (std == V4L2_STD_NTSC_443) {
 367                 fmt=0x3;
 368         } else if (std == V4L2_STD_PAL_M) {
 369                 fmt=0x5;
 370         } else if (std == V4L2_STD_PAL_N) {
 371                 fmt=0x6;
 372         } else if (std == V4L2_STD_PAL_Nc) {
 373                 fmt=0x7;
 374         } else if (std == V4L2_STD_PAL_60) {
 375                 fmt=0x8;
 376         } else {
 377                 /* Then, test against generic ones */
 378                 if (std & V4L2_STD_NTSC) {
 379                         fmt=0x1;
 380                 } else if (std & V4L2_STD_PAL) {
 381                         fmt=0x4;
 382                 } else if (std & V4L2_STD_SECAM) {
 383                         fmt=0xc;
 384                 }
 385         }
 386
 387         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
 388            Without this PAL may display a vertical ghosting effect.
 389            This happens for example with the Yuan MPC622. */
 390         if (fmt >= 4 && fmt < 8) {
 391                 /* Set format to NTSC-M */
 392                 cx25840_and_or(client, 0x400, ~0xf, 1);
 393                 /* Turn off LCOMB */
 394                 cx25840_and_or(client, 0x47b, ~6, 0);
 395         }
 396         cx25840_and_or(client, 0x400, ~0xf, fmt);
 397         cx25840_vbi_setup(client);
 398         return 0;
 399 }
 400
 401 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
 402 {
 403         struct cx25840_state *state = i2c_get_clientdata(client);
 404         /* check VID_FMT_SEL first */
 405         u8 fmt = cx25840_read(client, 0x400) & 0xf;
 406
 407         if (!fmt) {
 408                 /* check AFD_FMT_STAT if set to autodetect */
 409                 fmt = cx25840_read(client, 0x40d) & 0xf;
 410         }
 411
 412         switch (fmt) {
 413         case 0x1:
 414         {
 415                 /* if the audio std is A2-M, then this is the South Korean
 416                    NTSC standard */
 417                 if (!state->is_cx25836 && cx25840_read(client, 0x805) == 2)
 418                         return V4L2_STD_NTSC_M_KR;
 419                 return V4L2_STD_NTSC_M;
 420         }
 421         case 0x2: return V4L2_STD_NTSC_M_JP;
 422         case 0x3: return V4L2_STD_NTSC_443;
 423         case 0x4: return V4L2_STD_PAL;
 424         case 0x5: return V4L2_STD_PAL_M;
 425         case 0x6: return V4L2_STD_PAL_N;
 426         case 0x7: return V4L2_STD_PAL_Nc;
 427         case 0x8: return V4L2_STD_PAL_60;
 428         case 0xc: return V4L2_STD_SECAM;
 429         default: return V4L2_STD_UNKNOWN;
 430         }
 431 }
 432
 433 /* ----------------------------------------------------------------------- */
 434
 435 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 436 {
 437         struct cx25840_state *state = i2c_get_clientdata(client);
 438
 439         switch (ctrl->id) {
 440         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 441                 state->pvr150_workaround = ctrl->value;
 442                 set_input(client, state->vid_input, state->aud_input);
 443                 break;
 444
 445         case V4L2_CID_BRIGHTNESS:
 446                 if (ctrl->value < 0 || ctrl->value > 255) {
 447                         v4l_err(client, "invalid brightness setting %d\n",
 448                                     ctrl->value);
 449                         return -ERANGE;
 450                 }
 451
 452                 cx25840_write(client, 0x414, ctrl->value - 128);
 453                 break;
 454
 455         case V4L2_CID_CONTRAST:
 456                 if (ctrl->value < 0 || ctrl->value > 127) {
 457                         v4l_err(client, "invalid contrast setting %d\n",
 458                                     ctrl->value);
 459                         return -ERANGE;
 460                 }
 461
 462                 cx25840_write(client, 0x415, ctrl->value << 1);
 463                 break;
 464
 465         case V4L2_CID_SATURATION:
 466                 if (ctrl->value < 0 || ctrl->value > 127) {
 467                         v4l_err(client, "invalid saturation setting %d\n",
 468                                     ctrl->value);
 469                         return -ERANGE;
 470                 }
 471
 472                 cx25840_write(client, 0x420, ctrl->value << 1);
 473                 cx25840_write(client, 0x421, ctrl->value << 1);
 474                 break;
 475
 476         case V4L2_CID_HUE:
 477                 if (ctrl->value < -127 || ctrl->value > 127) {
 478                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
 479                         return -ERANGE;
 480                 }
 481
 482                 cx25840_write(client, 0x422, ctrl->value);
 483                 break;
 484
 485         case V4L2_CID_AUDIO_VOLUME:
 486         case V4L2_CID_AUDIO_BASS:
 487         case V4L2_CID_AUDIO_TREBLE:
 488         case V4L2_CID_AUDIO_BALANCE:
 489         case V4L2_CID_AUDIO_MUTE:
 490                 if (state->is_cx25836)
 491                         return -EINVAL;
 492                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 493
 494         default:
 495                 return -EINVAL;
 496         }
 497
 498         return 0;
 499 }
 500
 501 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 502 {
 503         struct cx25840_state *state = i2c_get_clientdata(client);
 504
 505         switch (ctrl->id) {
 506         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 507                 ctrl->value = state->pvr150_workaround;
 508                 break;
 509         case V4L2_CID_BRIGHTNESS:
 510                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
 511                 break;
 512         case V4L2_CID_CONTRAST:
 513                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 514                 break;
 515         case V4L2_CID_SATURATION:
 516                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 517                 break;
 518         case V4L2_CID_HUE:
 519                 ctrl->value = (s8)cx25840_read(client, 0x422);
 520                 break;
 521         case V4L2_CID_AUDIO_VOLUME:
 522         case V4L2_CID_AUDIO_BASS:
 523         case V4L2_CID_AUDIO_TREBLE:
 524         case V4L2_CID_AUDIO_BALANCE:
 525         case V4L2_CID_AUDIO_MUTE:
 526                 if (state->is_cx25836)
 527                         return -EINVAL;
 528                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 529         default:
 530                 return -EINVAL;
 531         }
 532
 533         return 0;
 534 }
 535
 536 /* ----------------------------------------------------------------------- */
 537
 538 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 539 {
 540         switch (fmt->type) {
 541         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 542                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 543         default:
 544                 return -EINVAL;
 545         }
 546
 547         return 0;
 548 }
 549
 550 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 551 {
 552         struct v4l2_pix_format *pix;
 553         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 554         int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);
 555
 556         switch (fmt->type) {
 557         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 558                 pix = &(fmt->fmt.pix);
 559
 560                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 561                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 562
 563                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 564                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 565
 566                 Vlines = pix->height + (is_pal ? 4 : 7);
 567
 568                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 569                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 570                         v4l_err(client, "%dx%d is not a valid size!\n",
 571                                     pix->width, pix->height);
 572                         return -ERANGE;
 573                 }
 574
 575                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 576                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 577                 VSC &= 0x1fff;
 578
 579                 if (pix->width >= 385)
 580                         filter = 0;
 581                 else if (pix->width > 192)
 582                         filter = 1;
 583                 else if (pix->width > 96)
 584                         filter = 2;
 585                 else
 586                         filter = 3;
 587
 588                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
 589                             pix->width, pix->height, HSC, VSC);
 590
 591                 /* HSCALE=HSC */
 592                 cx25840_write(client, 0x418, HSC & 0xff);
 593                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 594                 cx25840_write(client, 0x41a, HSC >> 16);
 595                 /* VSCALE=VSC */
 596                 cx25840_write(client, 0x41c, VSC & 0xff);
 597                 cx25840_write(client, 0x41d, VSC >> 8);
 598                 /* VS_INTRLACE=1 VFILT=filter */
 599                 cx25840_write(client, 0x41e, 0x8 | filter);
 600                 break;
 601
 602         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 603                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 604
 605         case V4L2_BUF_TYPE_VBI_CAPTURE:
 606                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 607
 608         default:
 609                 return -EINVAL;
 610         }
 611
 612         return 0;
 613 }
 614
 615 /* ----------------------------------------------------------------------- */
 616
 617 static struct v4l2_queryctrl cx25836_qctrl[] = {
 618         {
 619                 .id            = V4L2_CID_BRIGHTNESS,
 620                 .type          = V4L2_CTRL_TYPE_INTEGER,
 621                 .name          = "Brightness",
 622                 .minimum       = 0,
 623                 .maximum       = 255,
 624                 .step          = 1,
 625                 .default_value = 128,
 626                 .flags         = 0,
 627         }, {
 628                 .id            = V4L2_CID_CONTRAST,
 629                 .type          = V4L2_CTRL_TYPE_INTEGER,
 630                 .name          = "Contrast",
 631                 .minimum       = 0,
 632                 .maximum       = 127,
 633                 .step          = 1,
 634                 .default_value = 64,
 635                 .flags         = 0,
 636         }, {
 637                 .id            = V4L2_CID_SATURATION,
 638                 .type          = V4L2_CTRL_TYPE_INTEGER,
 639                 .name          = "Saturation",
 640                 .minimum       = 0,
 641                 .maximum       = 127,
 642                 .step          = 1,
 643                 .default_value = 64,
 644                 .flags         = 0,
 645         }, {
 646                 .id            = V4L2_CID_HUE,
 647                 .type          = V4L2_CTRL_TYPE_INTEGER,
 648                 .name          = "Hue",
 649                 .minimum       = -128,
 650                 .maximum       = 127,
 651                 .step          = 1,
 652                 .default_value = 0,
 653                 .flags         = 0,
 654         },
 655 };
 656
 657 static struct v4l2_queryctrl cx25840_qctrl[] = {
 658         {
 659                 .id            = V4L2_CID_AUDIO_VOLUME,
 660                 .type          = V4L2_CTRL_TYPE_INTEGER,
 661                 .name          = "Volume",
 662                 .minimum       = 0,
 663                 .maximum       = 65535,
 664                 .step          = 65535/100,
 665                 .default_value = 58880,
 666                 .flags         = 0,
 667         }, {
 668                 .id            = V4L2_CID_AUDIO_BALANCE,
 669                 .type          = V4L2_CTRL_TYPE_INTEGER,
 670                 .name          = "Balance",
 671                 .minimum       = 0,
 672                 .maximum       = 65535,
 673                 .step          = 65535/100,
 674                 .default_value = 32768,
 675                 .flags         = 0,
 676         }, {
 677                 .id            = V4L2_CID_AUDIO_MUTE,
 678                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 679                 .name          = "Mute",
 680                 .minimum       = 0,
 681                 .maximum       = 1,
 682                 .step          = 1,
 683                 .default_value = 1,
 684                 .flags         = 0,
 685         }, {
 686                 .id            = V4L2_CID_AUDIO_BASS,
 687                 .type          = V4L2_CTRL_TYPE_INTEGER,
 688                 .name          = "Bass",
 689                 .minimum       = 0,
 690                 .maximum       = 65535,
 691                 .step          = 65535/100,
 692                 .default_value = 32768,
 693         }, {
 694                 .id            = V4L2_CID_AUDIO_TREBLE,
 695                 .type          = V4L2_CTRL_TYPE_INTEGER,
 696                 .name          = "Treble",
 697                 .minimum       = 0,
 698                 .maximum       = 65535,
 699                 .step          = 65535/100,
 700                 .default_value = 32768,
 701         },
 702 };
 703
 704 /* ----------------------------------------------------------------------- */
 705
 706 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 707                            void *arg)
 708 {
 709         struct cx25840_state *state = i2c_get_clientdata(client);
 710         struct v4l2_tuner *vt = arg;
 711         struct v4l2_routing *route = arg;
 712
 713         switch (cmd) {
 714 #ifdef CONFIG_VIDEO_ADV_DEBUG
 715         /* ioctls to allow direct access to the
 716          * cx25840 registers for testing */
 717         case VIDIOC_INT_G_REGISTER:
 718         {
 719                 struct v4l2_register *reg = arg;
 720
 721                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 722                         return -EINVAL;
 723                 reg->val = cx25840_read(client, reg->reg & 0x0fff);
 724                 break;
 725         }
 726
 727         case VIDIOC_INT_S_REGISTER:
 728         {
 729                 struct v4l2_register *reg = arg;
 730
 731                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 732                         return -EINVAL;
 733                 if (!capable(CAP_SYS_ADMIN))
 734                         return -EPERM;
 735                 cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 736                 break;
 737         }
 738 #endif
 739
 740         case VIDIOC_INT_DECODE_VBI_LINE:
 741                 return cx25840_vbi(client, cmd, arg);
 742
 743         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 744                 return cx25840_audio(client, cmd, arg);
 745
 746         case VIDIOC_STREAMON:
 747                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
 748                 cx25840_write(client, 0x115, state->is_cx25836 ? 0x0c : 0x8c);
 749                 cx25840_write(client, 0x116, state->is_cx25836 ? 0x04 : 0x07);
 750                 break;
 751
 752         case VIDIOC_STREAMOFF:
 753                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
 754                 cx25840_write(client, 0x115, 0x00);
 755                 cx25840_write(client, 0x116, 0x00);
 756                 break;
 757
 758         case VIDIOC_LOG_STATUS:
 759                 log_video_status(client);
 760                 if (!state->is_cx25836)
 761                         log_audio_status(client);
 762                 break;
 763
 764         case VIDIOC_G_CTRL:
 765                 return get_v4lctrl(client, (struct v4l2_control *)arg);
 766
 767         case VIDIOC_S_CTRL:
 768                 return set_v4lctrl(client, (struct v4l2_control *)arg);
 769
 770         case VIDIOC_QUERYCTRL:
 771         {
 772                 struct v4l2_queryctrl *qc = arg;
 773                 int i;
 774
 775                 for (i = 0; i < ARRAY_SIZE(cx25836_qctrl); i++)
 776                         if (qc->id && qc->id == cx25836_qctrl[i].id) {
 777                                 memcpy(qc, &cx25836_qctrl[i], sizeof(*qc));
 778                                 return 0;
 779                         }
 780                 if (state->is_cx25836)
 781                         return -EINVAL;
 782
 783                 for (i = 0; i < ARRAY_SIZE(cx25840_qctrl); i++)
 784                         if (qc->id && qc->id == cx25840_qctrl[i].id) {
 785                                 memcpy(qc, &cx25840_qctrl[i], sizeof(*qc));
 786                                 return 0;
 787                         }
 788                 return -EINVAL;
 789         }
 790
 791         case VIDIOC_G_STD:
 792                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
 793                 break;
 794
 795         case VIDIOC_S_STD:
 796                 state->radio = 0;
 797                 return set_v4lstd(client, *(v4l2_std_id *)arg);
 798
 799         case AUDC_SET_RADIO:
 800                 state->radio = 1;
 801                 break;
 802
 803         case VIDIOC_INT_G_VIDEO_ROUTING:
 804                 route->input = state->vid_input;
 805                 route->output = 0;
 806                 break;
 807
 808         case VIDIOC_INT_S_VIDEO_ROUTING:
 809                 return set_input(client, route->input, state->aud_input);
 810
 811         case VIDIOC_INT_G_AUDIO_ROUTING:
 812                 if (state->is_cx25836)
 813                         return -EINVAL;
 814                 route->input = state->aud_input;
 815                 route->output = 0;
 816                 break;
 817
 818         case VIDIOC_INT_S_AUDIO_ROUTING:
 819                 if (state->is_cx25836)
 820                         return -EINVAL;
 821                 return set_input(client, state->vid_input, route->input);
 822
 823         case VIDIOC_S_FREQUENCY:
 824                 if (!state->is_cx25836) {
 825                         input_change(client);
 826                 }
 827                 break;
 828
 829         case VIDIOC_G_TUNER:
 830         {
 831                 u8 vpres = cx25840_read(client, 0x40e) & 0x20;
 832                 u8 mode;
 833                 int val = 0;
 834
 835                 if (state->radio)
 836                         break;
 837
 838                 vt->signal = vpres ? 0xffff : 0x0;
 839                 if (state->is_cx25836)
 840                         break;
 841
 842                 vt->capability |=
 843                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
 844                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
 845
 846                 mode = cx25840_read(client, 0x804);
 847
 848                 /* get rxsubchans and audmode */
 849                 if ((mode & 0xf) == 1)
 850                         val |= V4L2_TUNER_SUB_STEREO;
 851                 else
 852                         val |= V4L2_TUNER_SUB_MONO;
 853
 854                 if (mode == 2 || mode == 4)
 855                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 856
 857                 if (mode & 0x10)
 858                         val |= V4L2_TUNER_SUB_SAP;
 859
 860                 vt->rxsubchans = val;
 861                 vt->audmode = state->audmode;
 862                 break;
 863         }
 864
 865         case VIDIOC_S_TUNER:
 866                 if (state->radio || state->is_cx25836)
 867                         break;
 868
 869                 switch (vt->audmode) {
 870                 case V4L2_TUNER_MODE_MONO:
 871                         /* mono      -> mono
 872                            stereo    -> mono
 873                            bilingual -> lang1 */
 874                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
 875                         break;
 876                 case V4L2_TUNER_MODE_STEREO:
 877                 case V4L2_TUNER_MODE_LANG1:
 878                         /* mono      -> mono
 879                            stereo    -> stereo
 880                            bilingual -> lang1 */
 881                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
 882                         break;
 883                 case V4L2_TUNER_MODE_LANG1_LANG2:
 884                         /* mono      -> mono
 885                            stereo    -> stereo
 886                            bilingual -> lang1/lang2 */
 887                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
 888                         break;
 889                 case V4L2_TUNER_MODE_LANG2:
 890                         /* mono      -> mono
 891                            stereo    -> stereo
 892                            bilingual -> lang2 */
 893                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
 894                         break;
 895                 default:
 896                         return -EINVAL;
 897                 }
 898                 state->audmode = vt->audmode;
 899                 break;
 900
 901         case VIDIOC_G_FMT:
 902                 return get_v4lfmt(client, (struct v4l2_format *)arg);
 903
 904         case VIDIOC_S_FMT:
 905                 return set_v4lfmt(client, (struct v4l2_format *)arg);
 906
 907         case VIDIOC_INT_RESET:
 908                 if (state->is_cx25836)
 909                         cx25836_initialize(client);
 910                 else
 911                         cx25840_initialize(client, 0);
 912                 break;
 913
 914         case VIDIOC_INT_G_CHIP_IDENT:
 915                 *(enum v4l2_chip_ident *)arg = state->id;
 916                 break;
 917
 918         default:
 919                 return -EINVAL;
 920         }
 921
 922         return 0;
 923 }
 924
 925 /* ----------------------------------------------------------------------- */
 926
 927 static struct i2c_driver i2c_driver_cx25840;
 928
 929 static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
 930                                  int kind)
 931 {
 932         struct i2c_client *client;
 933         struct cx25840_state *state;
 934         enum v4l2_chip_ident id;
 935         u16 device_id;
 936
 937         /* Check if the adapter supports the needed features
 938          * Not until kernel version 2.6.11 did the bit-algo
 939          * correctly report that it would do an I2C-level xfer */
 940         if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
 941                 return 0;
 942
 943         state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
 944         if (state == 0)
 945                 return -ENOMEM;
 946
 947         client = &state->c;
 948         client->addr = address;
 949         client->adapter = adapter;
 950         client->driver = &i2c_driver_cx25840;
 951         snprintf(client->name, sizeof(client->name) - 1, "cx25840");
 952
 953         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", address << 1);
 954
 955         device_id = cx25840_read(client, 0x101) << 8;
 956         device_id |= cx25840_read(client, 0x100);
 957
 958         /* The high byte of the device ID should be
 959          * 0x83 for the cx2583x and 0x84 for the cx2584x */
 960         if ((device_id & 0xff00) == 0x8300) {
 961                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
 962                 state->is_cx25836 = 1;
 963         }
 964         else if ((device_id & 0xff00) == 0x8400) {
 965                 id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
 966                 state->is_cx25836 = 0;
 967         }
 968         else {
 969                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
 970                 kfree(state);
 971                 return 0;
 972         }
 973
 974         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
 975                     (device_id & 0xfff0) >> 4,
 976                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : 3,
 977                     address << 1, adapter->name);
 978
 979         i2c_set_clientdata(client, state);
 980         state->vid_input = CX25840_COMPOSITE7;
 981         state->aud_input = CX25840_AUDIO8;
 982         state->audclk_freq = 48000;
 983         state->pvr150_workaround = 0;
 984         state->audmode = V4L2_TUNER_MODE_LANG1;
 985         state->id = id;
 986
 987         if (state->is_cx25836)
 988                 cx25836_initialize(client);
 989         else
 990                 cx25840_initialize(client, 1);
 991
 992         i2c_attach_client(client);
 993
 994         return 0;
 995 }
 996
 997 static int cx25840_attach_adapter(struct i2c_adapter *adapter)
 998 {
 999         if (adapter->class & I2C_CLASS_TV_ANALOG)
1000                 return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
1001         return 0;
1002 }
1003
1004 static int cx25840_detach_client(struct i2c_client *client)
1005 {
1006         struct cx25840_state *state = i2c_get_clientdata(client);
1007         int err;
1008
1009         err = i2c_detach_client(client);
1010         if (err) {
1011                 return err;
1012         }
1013
1014         kfree(state);
1015
1016         return 0;
1017 }
1018
1019 /* ----------------------------------------------------------------------- */
1020
1021 static struct i2c_driver i2c_driver_cx25840 = {
1022         .driver = {
1023                 .name = "cx25840",
1024         },
1025         .id = I2C_DRIVERID_CX25840,
1026         .attach_adapter = cx25840_attach_adapter,
1027         .detach_client = cx25840_detach_client,
1028         .command = cx25840_command,
1029 };
1030
1031
1032 static int __init m__init(void)
1033 {
1034         return i2c_add_driver(&i2c_driver_cx25840);
1035 }
1036
1037 static void __exit m__exit(void)
1038 {
1039         i2c_del_driver(&i2c_driver_cx25840);
1040 }
1041
1042 module_init(m__init);
1043 module_exit(m__exit);
1044
1045 /* ----------------------------------------------------------------------- */
1046
1047 static void log_video_status(struct i2c_client *client)
1048 {
1049         static const char *const fmt_strs[] = {
1050                 "0x0",
1051                 "NTSC-M", "NTSC-J", "NTSC-4.43",
1052                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
1053                 "0x9", "0xA", "0xB",
1054                 "SECAM",
1055                 "0xD", "0xE", "0xF"
1056         };
1057
1058         struct cx25840_state *state = i2c_get_clientdata(client);
1059         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
1060         u8 gen_stat1 = cx25840_read(client, 0x40d);
1061         u8 gen_stat2 = cx25840_read(client, 0x40e);
1062         int vid_input = state->vid_input;
1063
1064         v4l_info(client, "Video signal:              %spresent\n",
1065                     (gen_stat2 & 0x20) ? "" : "not ");
1066         v4l_info(client, "Detected format:           %s\n",
1067                     fmt_strs[gen_stat1 & 0xf]);
1068
1069         v4l_info(client, "Specified standard:        %s\n",
1070                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
1071
1072         if (vid_input >= CX25840_COMPOSITE1 &&
1073             vid_input <= CX25840_COMPOSITE8) {
1074                 v4l_info(client, "Specified video input:     Composite %d\n",
1075                         vid_input - CX25840_COMPOSITE1 + 1);
1076         } else {
1077                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
1078                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
1079         }
1080
1081         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
1082 }
1083
1084 /* ----------------------------------------------------------------------- */
1085
1086 static void log_audio_status(struct i2c_client *client)
1087 {
1088         struct cx25840_state *state = i2c_get_clientdata(client);
1089         u8 download_ctl = cx25840_read(client, 0x803);
1090         u8 mod_det_stat0 = cx25840_read(client, 0x804);
1091         u8 mod_det_stat1 = cx25840_read(client, 0x805);
1092         u8 audio_config = cx25840_read(client, 0x808);
1093         u8 pref_mode = cx25840_read(client, 0x809);
1094         u8 afc0 = cx25840_read(client, 0x80b);
1095         u8 mute_ctl = cx25840_read(client, 0x8d3);
1096         int aud_input = state->aud_input;
1097         char *p;
1098
1099         switch (mod_det_stat0) {
1100         case 0x00: p = "mono"; break;
1101         case 0x01: p = "stereo"; break;
1102         case 0x02: p = "dual"; break;
1103         case 0x04: p = "tri"; break;
1104         case 0x10: p = "mono with SAP"; break;
1105         case 0x11: p = "stereo with SAP"; break;
1106         case 0x12: p = "dual with SAP"; break;
1107         case 0x14: p = "tri with SAP"; break;
1108         case 0xfe: p = "forced mode"; break;
1109         default: p = "not defined";
1110         }
1111         v4l_info(client, "Detected audio mode:       %s\n", p);
1112
1113         switch (mod_det_stat1) {
1114         case 0x00: p = "not defined"; break;
1115         case 0x01: p = "EIAJ"; break;
1116         case 0x02: p = "A2-M"; break;
1117         case 0x03: p = "A2-BG"; break;
1118         case 0x04: p = "A2-DK1"; break;
1119         case 0x05: p = "A2-DK2"; break;
1120         case 0x06: p = "A2-DK3"; break;
1121         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
1122         case 0x08: p = "AM-L"; break;
1123         case 0x09: p = "NICAM-BG"; break;
1124         case 0x0a: p = "NICAM-DK"; break;
1125         case 0x0b: p = "NICAM-I"; break;
1126         case 0x0c: p = "NICAM-L"; break;
1127         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
1128         case 0x0e: p = "IF FM Radio"; break;
1129         case 0x0f: p = "BTSC"; break;
1130         case 0x10: p = "high-deviation FM"; break;
1131         case 0x11: p = "very high-deviation FM"; break;
1132         case 0xfd: p = "unknown audio standard"; break;
1133         case 0xfe: p = "forced audio standard"; break;
1134         case 0xff: p = "no detected audio standard"; break;
1135         default: p = "not defined";
1136         }
1137         v4l_info(client, "Detected audio standard:   %s\n", p);
1138         v4l_info(client, "Audio muted:               %s\n",
1139                     (mute_ctl & 0x2) ? "yes" : "no");
1140         v4l_info(client, "Audio microcontroller:     %s\n",
1141                     (download_ctl & 0x10) ? "running" : "stopped");
1142
1143         switch (audio_config >> 4) {
1144         case 0x00: p = "undefined"; break;
1145         case 0x01: p = "BTSC"; break;
1146         case 0x02: p = "EIAJ"; break;
1147         case 0x03: p = "A2-M"; break;
1148         case 0x04: p = "A2-BG"; break;
1149         case 0x05: p = "A2-DK1"; break;
1150         case 0x06: p = "A2-DK2"; break;
1151         case 0x07: p = "A2-DK3"; break;
1152         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
1153         case 0x09: p = "AM-L"; break;
1154         case 0x0a: p = "NICAM-BG"; break;
1155         case 0x0b: p = "NICAM-DK"; break;
1156         case 0x0c: p = "NICAM-I"; break;
1157         case 0x0d: p = "NICAM-L"; break;
1158         case 0x0e: p = "FM radio"; break;
1159         case 0x0f: p = "automatic detection"; break;
1160         default: p = "undefined";
1161         }
1162         v4l_info(client, "Configured audio standard: %s\n", p);
1163
1164         if ((audio_config >> 4) < 0xF) {
1165                 switch (audio_config & 0xF) {
1166                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
1167                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
1168                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
1169                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
1170                 case 0x04: p = "STEREO"; break;
1171                 case 0x05: p = "DUAL1 (AB)"; break;
1172                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
1173                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
1174                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
1175                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
1176                 case 0x0a: p = "SAP"; break;
1177                 default: p = "undefined";
1178                 }
1179                 v4l_info(client, "Configured audio mode:     %s\n", p);
1180         } else {
1181                 switch (audio_config & 0xF) {
1182                 case 0x00: p = "BG"; break;
1183                 case 0x01: p = "DK1"; break;
1184                 case 0x02: p = "DK2"; break;
1185                 case 0x03: p = "DK3"; break;
1186                 case 0x04: p = "I"; break;
1187                 case 0x05: p = "L"; break;
1188                 case 0x06: p = "BTSC"; break;
1189                 case 0x07: p = "EIAJ"; break;
1190                 case 0x08: p = "A2-M"; break;
1191                 case 0x09: p = "FM Radio"; break;
1192                 case 0x0f: p = "automatic standard and mode detection"; break;
1193                 default: p = "undefined";
1194                 }
1195                 v4l_info(client, "Configured audio system:   %s\n", p);
1196         }
1197
1198         if (aud_input) {
1199                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
1200         } else {
1201                 v4l_info(client, "Specified audio input:     External\n");
1202         }
1203
1204         switch (pref_mode & 0xf) {
1205         case 0: p = "mono/language A"; break;
1206         case 1: p = "language B"; break;
1207         case 2: p = "language C"; break;
1208         case 3: p = "analog fallback"; break;
1209         case 4: p = "stereo"; break;
1210         case 5: p = "language AC"; break;
1211         case 6: p = "language BC"; break;
1212         case 7: p = "language AB"; break;
1213         default: p = "undefined";
1214         }
1215         v4l_info(client, "Preferred audio mode:      %s\n", p);
1216
1217         if ((audio_config & 0xf) == 0xf) {
1218                 switch ((afc0 >> 3) & 0x3) {
1219                 case 0: p = "system DK"; break;
1220                 case 1: p = "system L"; break;
1221                 case 2: p = "autodetect"; break;
1222                 default: p = "undefined";
1223                 }
1224                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
1225
1226                 switch (afc0 & 0x7) {
1227                 case 0: p = "chroma"; break;
1228                 case 1: p = "BTSC"; break;
1229                 case 2: p = "EIAJ"; break;
1230                 case 3: p = "A2-M"; break;
1231                 case 4: p = "autodetect"; break;
1232                 default: p = "undefined";
1233                 }
1234                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
1235         }
1236 }