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