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/audiochip.h>
  35 #include <media/v4l2-common.h>
  36
  37 #include "cx25840.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 int cx25840_debug = 0;
  47
  48 module_param(cx25840_debug, bool, 0644);
  49
  50 MODULE_PARM_DESC(cx25840_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, u8 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 *, enum cx25840_input);
 119 static void input_change(struct i2c_client *);
 120 static void log_status(struct i2c_client *client);
 121
 122 /* ----------------------------------------------------------------------- */
 123
 124 static inline void init_dll1(struct i2c_client *client)
 125 {
 126         /* This is the Hauppauge sequence used to
 127          * initialize the Delay Lock Loop 1 (ADC DLL). */
 128         cx25840_write(client, 0x159, 0x23);
 129         cx25840_write(client, 0x15a, 0x87);
 130         cx25840_write(client, 0x15b, 0x06);
 131         cx25840_write(client, 0x159, 0xe1);
 132         cx25840_write(client, 0x15a, 0x86);
 133         cx25840_write(client, 0x159, 0xe0);
 134         cx25840_write(client, 0x159, 0xe1);
 135         cx25840_write(client, 0x15b, 0x10);
 136 }
 137
 138 static inline void init_dll2(struct i2c_client *client)
 139 {
 140         /* This is the Hauppauge sequence used to
 141          * initialize the Delay Lock Loop 2 (ADC DLL). */
 142         cx25840_write(client, 0x15d, 0xe3);
 143         cx25840_write(client, 0x15e, 0x86);
 144         cx25840_write(client, 0x15f, 0x06);
 145         cx25840_write(client, 0x15d, 0xe1);
 146         cx25840_write(client, 0x15d, 0xe0);
 147         cx25840_write(client, 0x15d, 0xe1);
 148 }
 149
 150 static void cx25840_initialize(struct i2c_client *client, int loadfw)
 151 {
 152         struct cx25840_state *state = i2c_get_clientdata(client);
 153
 154         /* datasheet startup in numbered steps, refer to page 3-77 */
 155         /* 2. */
 156         cx25840_and_or(client, 0x803, ~0x10, 0x00);
 157         /* The default of this register should be 4, but I get 0 instead.
 158          * Set this register to 4 manually. */
 159         cx25840_write(client, 0x000, 0x04);
 160         /* 3. */
 161         init_dll1(client);
 162         init_dll2(client);
 163         cx25840_write(client, 0x136, 0x0a);
 164         /* 4. */
 165         cx25840_write(client, 0x13c, 0x01);
 166         cx25840_write(client, 0x13c, 0x00);
 167         /* 5. */
 168         if (loadfw)
 169                 cx25840_loadfw(client);
 170         /* 6. */
 171         cx25840_write(client, 0x115, 0x8c);
 172         cx25840_write(client, 0x116, 0x07);
 173         cx25840_write(client, 0x118, 0x02);
 174         /* 7. */
 175         cx25840_write(client, 0x4a5, 0x80);
 176         cx25840_write(client, 0x4a5, 0x00);
 177         cx25840_write(client, 0x402, 0x00);
 178         /* 8. */
 179         cx25840_write(client, 0x401, 0x18);
 180         cx25840_write(client, 0x4a2, 0x10);
 181         cx25840_write(client, 0x402, 0x04);
 182         /* 10. */
 183         cx25840_write(client, 0x8d3, 0x1f);
 184         cx25840_write(client, 0x8e3, 0x03);
 185
 186         cx25840_vbi_setup(client);
 187
 188         /* trial and error says these are needed to get audio */
 189         cx25840_write(client, 0x914, 0xa0);
 190         cx25840_write(client, 0x918, 0xa0);
 191         cx25840_write(client, 0x919, 0x01);
 192
 193         /* stereo prefered */
 194         cx25840_write(client, 0x809, 0x04);
 195         /* AC97 shift */
 196         cx25840_write(client, 0x8cf, 0x0f);
 197
 198         /* (re)set video input */
 199         set_input(client, state->input);
 200         /* (re)set audio input */
 201         cx25840_audio(client, AUDC_SET_INPUT, &state->audio_input);
 202
 203         /* start microcontroller */
 204         cx25840_and_or(client, 0x803, ~0x10, 0x10);
 205 }
 206
 207 /* ----------------------------------------------------------------------- */
 208
 209 static void input_change(struct i2c_client *client)
 210 {
 211         struct cx25840_state *state = i2c_get_clientdata(client);
 212         v4l2_std_id std = cx25840_get_v4lstd(client);
 213
 214         /* Note: perhaps V4L2_STD_PAL_M should be handled as V4L2_STD_NTSC
 215            instead of V4L2_STD_PAL. Someone needs to test this. */
 216         if (std & V4L2_STD_PAL) {
 217                 /* Follow tuner change procedure for PAL */
 218                 cx25840_write(client, 0x808, 0xff);
 219                 cx25840_write(client, 0x80b, 0x10);
 220         } else if (std & V4L2_STD_SECAM) {
 221                 /* Select autodetect for SECAM */
 222                 cx25840_write(client, 0x808, 0xff);
 223                 cx25840_write(client, 0x80b, 0x10);
 224         } else if (std & V4L2_STD_NTSC) {
 225                 /* NTSC */
 226                 if (state->cardtype == CARDTYPE_PVR150_WORKAROUND) {
 227                         /* Certain Hauppauge PVR150 models have a hardware bug
 228                            that causes audio to drop out. For these models the
 229                            audio standard must be set explicitly.
 230                            To be precise: it affects cards with tuner models
 231                            85, 99 and 112 (model numbers from tveeprom). */
 232                         if (std == V4L2_STD_NTSC_M_JP) {
 233                                 /* Japan uses EIAJ audio standard */
 234                                 cx25840_write(client, 0x808, 0x2f);
 235                         } else {
 236                                 /* Others use the BTSC audio standard */
 237                                 cx25840_write(client, 0x808, 0x1f);
 238                         }
 239                         /* South Korea uses the A2-M (aka Zweiton M) audio
 240                            standard, and should set 0x808 to 0x3f, but I don't
 241                            know how to detect this. */
 242                 } else if (std == V4L2_STD_NTSC_M_JP) {
 243                         /* Japan uses EIAJ audio standard */
 244                         cx25840_write(client, 0x808, 0xf7);
 245                 } else {
 246                         /* Others use the BTSC audio standard */
 247                         cx25840_write(client, 0x808, 0xf6);
 248                 }
 249                 /* South Korea uses the A2-M (aka Zweiton M) audio standard,
 250                    and should set 0x808 to 0xf8, but I don't know how to
 251                    detect this. */
 252                 cx25840_write(client, 0x80b, 0x00);
 253         }
 254
 255         if (cx25840_read(client, 0x803) & 0x10) {
 256                 /* restart audio decoder microcontroller */
 257                 cx25840_and_or(client, 0x803, ~0x10, 0x00);
 258                 cx25840_and_or(client, 0x803, ~0x10, 0x10);
 259         }
 260 }
 261
 262 static int set_input(struct i2c_client *client, enum cx25840_input input)
 263 {
 264         struct cx25840_state *state = i2c_get_clientdata(client);
 265
 266         cx25840_dbg("decoder set input (%d)\n", input);
 267
 268         switch (input) {
 269         case CX25840_TUNER:
 270                 cx25840_dbg("now setting Tuner input\n");
 271
 272                 if (state->cardtype == CARDTYPE_PVR150 ||
 273                     state->cardtype == CARDTYPE_PVR150_WORKAROUND) {
 274                         /* CH_SEL_ADC2=1 */
 275                         cx25840_and_or(client, 0x102, ~0x2, 0x02);
 276                 }
 277
 278                 /* Video Input Control */
 279                 if (state->cardtype == CARDTYPE_PG600) {
 280                         cx25840_write(client, 0x103, 0x11);
 281                 } else {
 282                         cx25840_write(client, 0x103, 0x46);
 283                 }
 284
 285                 /* INPUT_MODE=0 */
 286                 cx25840_and_or(client, 0x401, ~0x6, 0x00);
 287                 break;
 288
 289         case CX25840_COMPOSITE0:
 290         case CX25840_COMPOSITE1:
 291                 cx25840_dbg("now setting Composite input\n");
 292
 293                 /* Video Input Control */
 294                 if (state->cardtype == CARDTYPE_PG600) {
 295                         cx25840_write(client, 0x103, 0x00);
 296                 } else {
 297                         cx25840_write(client, 0x103, 0x02);
 298                 }
 299
 300                 /* INPUT_MODE=0 */
 301                 cx25840_and_or(client, 0x401, ~0x6, 0x00);
 302                 break;
 303
 304         case CX25840_SVIDEO0:
 305         case CX25840_SVIDEO1:
 306                 cx25840_dbg("now setting S-Video input\n");
 307
 308                 /* CH_SEL_ADC2=0 */
 309                 cx25840_and_or(client, 0x102, ~0x2, 0x00);
 310
 311                 /* Video Input Control */
 312                 if (state->cardtype == CARDTYPE_PG600) {
 313                         cx25840_write(client, 0x103, 0x02);
 314                 } else {
 315                         cx25840_write(client, 0x103, 0x10);
 316                 }
 317
 318                 /* INPUT_MODE=1 */
 319                 cx25840_and_or(client, 0x401, ~0x6, 0x02);
 320                 break;
 321
 322         default:
 323                 cx25840_err("%d is not a valid input!\n", input);
 324                 return -EINVAL;
 325         }
 326
 327         state->input = input;
 328         input_change(client);
 329         return 0;
 330 }
 331
 332 /* ----------------------------------------------------------------------- */
 333
 334 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
 335 {
 336         u8 fmt=0;       /* zero is autodetect */
 337
 338         /* First tests should be against specific std */
 339         if (std & V4L2_STD_NTSC_M_JP) {
 340                 fmt=0x2;
 341         } else if (std & V4L2_STD_NTSC_443) {
 342                 fmt=0x3;
 343         } else if (std & V4L2_STD_PAL_M) {
 344                 fmt=0x5;
 345         } else if (std & V4L2_STD_PAL_N) {
 346                 fmt=0x6;
 347         } else if (std & V4L2_STD_PAL_Nc) {
 348                 fmt=0x7;
 349         } else if (std & V4L2_STD_PAL_60) {
 350                 fmt=0x8;
 351         } else {
 352                 /* Then, test against generic ones */
 353                 if (std & V4L2_STD_NTSC) {
 354                         fmt=0x1;
 355                 } else if (std & V4L2_STD_PAL) {
 356                         fmt=0x4;
 357                 } else if (std & V4L2_STD_SECAM) {
 358                         fmt=0xc;
 359                 }
 360         }
 361
 362         cx25840_and_or(client, 0x400, ~0xf, fmt);
 363         cx25840_vbi_setup(client);
 364         return 0;
 365 }
 366
 367 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
 368 {
 369         /* check VID_FMT_SEL first */
 370         u8 fmt = cx25840_read(client, 0x400) & 0xf;
 371
 372         if (!fmt) {
 373                 /* check AFD_FMT_STAT if set to autodetect */
 374                 fmt = cx25840_read(client, 0x40d) & 0xf;
 375         }
 376
 377         switch (fmt) {
 378         case 0x1: return V4L2_STD_NTSC_M;
 379         case 0x2: return V4L2_STD_NTSC_M_JP;
 380         case 0x3: return V4L2_STD_NTSC_443;
 381         case 0x4: return V4L2_STD_PAL;
 382         case 0x5: return V4L2_STD_PAL_M;
 383         case 0x6: return V4L2_STD_PAL_N;
 384         case 0x7: return V4L2_STD_PAL_Nc;
 385         case 0x8: return V4L2_STD_PAL_60;
 386         case 0xc: return V4L2_STD_SECAM;
 387         default: return V4L2_STD_UNKNOWN;
 388         }
 389 }
 390
 391 /* ----------------------------------------------------------------------- */
 392
 393 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 394 {
 395         struct cx25840_state *state = i2c_get_clientdata(client);
 396
 397         switch (ctrl->id) {
 398         case CX25840_CID_CARDTYPE:
 399                 switch (ctrl->value) {
 400                 case CARDTYPE_PVR150:
 401                 case CARDTYPE_PVR150_WORKAROUND:
 402                 case CARDTYPE_PG600:
 403                         state->cardtype = ctrl->value;
 404                         break;
 405                 default:
 406                         return -ERANGE;
 407                 }
 408
 409                 set_input(client, state->input);
 410                 break;
 411
 412         case V4L2_CID_BRIGHTNESS:
 413                 if (ctrl->value < 0 || ctrl->value > 255) {
 414                         cx25840_err("invalid brightness setting %d\n",
 415                                     ctrl->value);
 416                         return -ERANGE;
 417                 }
 418
 419                 cx25840_write(client, 0x414, ctrl->value - 128);
 420                 break;
 421
 422         case V4L2_CID_CONTRAST:
 423                 if (ctrl->value < 0 || ctrl->value > 127) {
 424                         cx25840_err("invalid contrast setting %d\n",
 425                                     ctrl->value);
 426                         return -ERANGE;
 427                 }
 428
 429                 cx25840_write(client, 0x415, ctrl->value << 1);
 430                 break;
 431
 432         case V4L2_CID_SATURATION:
 433                 if (ctrl->value < 0 || ctrl->value > 127) {
 434                         cx25840_err("invalid saturation setting %d\n",
 435                                     ctrl->value);
 436                         return -ERANGE;
 437                 }
 438
 439                 cx25840_write(client, 0x420, ctrl->value << 1);
 440                 cx25840_write(client, 0x421, ctrl->value << 1);
 441                 break;
 442
 443         case V4L2_CID_HUE:
 444                 if (ctrl->value < -127 || ctrl->value > 127) {
 445                         cx25840_err("invalid hue setting %d\n", ctrl->value);
 446                         return -ERANGE;
 447                 }
 448
 449                 cx25840_write(client, 0x422, ctrl->value);
 450                 break;
 451
 452         case V4L2_CID_AUDIO_VOLUME:
 453         case V4L2_CID_AUDIO_BASS:
 454         case V4L2_CID_AUDIO_TREBLE:
 455         case V4L2_CID_AUDIO_BALANCE:
 456         case V4L2_CID_AUDIO_MUTE:
 457                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 458         }
 459
 460         return 0;
 461 }
 462
 463 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 464 {
 465         struct cx25840_state *state = i2c_get_clientdata(client);
 466
 467         switch (ctrl->id) {
 468         case CX25840_CID_CARDTYPE:
 469                 ctrl->value = state->cardtype;
 470                 break;
 471         case V4L2_CID_BRIGHTNESS:
 472                 ctrl->value = cx25840_read(client, 0x414) + 128;
 473                 break;
 474         case V4L2_CID_CONTRAST:
 475                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 476                 break;
 477         case V4L2_CID_SATURATION:
 478                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 479                 break;
 480         case V4L2_CID_HUE:
 481                 ctrl->value = cx25840_read(client, 0x422);
 482                 break;
 483         case V4L2_CID_AUDIO_VOLUME:
 484         case V4L2_CID_AUDIO_BASS:
 485         case V4L2_CID_AUDIO_TREBLE:
 486         case V4L2_CID_AUDIO_BALANCE:
 487         case V4L2_CID_AUDIO_MUTE:
 488                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 489         default:
 490                 return -EINVAL;
 491         }
 492
 493         return 0;
 494 }
 495
 496 /* ----------------------------------------------------------------------- */
 497
 498 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 499 {
 500         switch (fmt->type) {
 501         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 502                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 503         default:
 504                 return -EINVAL;
 505         }
 506
 507         return 0;
 508 }
 509
 510 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 511 {
 512         struct v4l2_pix_format *pix;
 513         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 514         int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);
 515
 516         switch (fmt->type) {
 517         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 518                 pix = &(fmt->fmt.pix);
 519
 520                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 521                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 522
 523                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 524                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 525
 526                 Vlines = pix->height + (is_pal ? 4 : 7);
 527
 528                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 529                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 530                         cx25840_err("%dx%d is not a valid size!\n",
 531                                     pix->width, pix->height);
 532                         return -ERANGE;
 533                 }
 534
 535                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 536                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 537                 VSC &= 0x1fff;
 538
 539                 if (pix->width >= 385)
 540                         filter = 0;
 541                 else if (pix->width > 192)
 542                         filter = 1;
 543                 else if (pix->width > 96)
 544                         filter = 2;
 545                 else
 546                         filter = 3;
 547
 548                 cx25840_dbg("decoder set size %dx%d -> scale  %ux%u\n",
 549                             pix->width, pix->height, HSC, VSC);
 550
 551                 /* HSCALE=HSC */
 552                 cx25840_write(client, 0x418, HSC & 0xff);
 553                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 554                 cx25840_write(client, 0x41a, HSC >> 16);
 555                 /* VSCALE=VSC */
 556                 cx25840_write(client, 0x41c, VSC & 0xff);
 557                 cx25840_write(client, 0x41d, VSC >> 8);
 558                 /* VS_INTRLACE=1 VFILT=filter */
 559                 cx25840_write(client, 0x41e, 0x8 | filter);
 560                 break;
 561
 562         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 563                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 564
 565         case V4L2_BUF_TYPE_VBI_CAPTURE:
 566                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 567
 568         default:
 569                 return -EINVAL;
 570         }
 571
 572         return 0;
 573 }
 574
 575 /* ----------------------------------------------------------------------- */
 576
 577 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 578                            void *arg)
 579 {
 580         struct cx25840_state *state = i2c_get_clientdata(client);
 581         struct v4l2_tuner *vt = arg;
 582         int result = 0;
 583
 584         switch (cmd) {
 585         case 0:
 586                 break;
 587
 588 #ifdef CONFIG_VIDEO_ADV_DEBUG
 589         /* ioctls to allow direct access to the
 590          * cx25840 registers for testing */
 591         case VIDIOC_INT_G_REGISTER:
 592         {
 593                 struct v4l2_register *reg = arg;
 594
 595                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 596                         return -EINVAL;
 597                 reg->val = cx25840_read(client, reg->reg & 0x0fff);
 598                 break;
 599         }
 600
 601         case VIDIOC_INT_S_REGISTER:
 602         {
 603                 struct v4l2_register *reg = arg;
 604
 605                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 606                         return -EINVAL;
 607                 if (!capable(CAP_SYS_ADMIN))
 608                         return -EPERM;
 609                 cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 610                 break;
 611         }
 612 #endif
 613
 614         case VIDIOC_INT_DECODE_VBI_LINE:
 615                 return cx25840_vbi(client, cmd, arg);
 616
 617         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 618         case AUDC_SET_INPUT:
 619                 result = cx25840_audio(client, cmd, arg);
 620                 break;
 621
 622         case VIDIOC_STREAMON:
 623                 cx25840_dbg("enable output\n");
 624                 cx25840_write(client, 0x115, 0x8c);
 625                 cx25840_write(client, 0x116, 0x07);
 626                 break;
 627
 628         case VIDIOC_STREAMOFF:
 629                 cx25840_dbg("disable output\n");
 630                 cx25840_write(client, 0x115, 0x00);
 631                 cx25840_write(client, 0x116, 0x00);
 632                 break;
 633
 634         case VIDIOC_LOG_STATUS:
 635                 log_status(client);
 636                 break;
 637
 638         case VIDIOC_G_CTRL:
 639                 result = get_v4lctrl(client, (struct v4l2_control *)arg);
 640                 break;
 641
 642         case VIDIOC_S_CTRL:
 643                 result = set_v4lctrl(client, (struct v4l2_control *)arg);
 644                 break;
 645
 646         case VIDIOC_G_STD:
 647                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
 648                 break;
 649
 650         case VIDIOC_S_STD:
 651                 result = set_v4lstd(client, *(v4l2_std_id *)arg);
 652                 break;
 653
 654         case VIDIOC_G_INPUT:
 655                 *(int *)arg = state->input;
 656                 break;
 657
 658         case VIDIOC_S_INPUT:
 659                 result = set_input(client, *(int *)arg);
 660                 break;
 661
 662         case VIDIOC_S_FREQUENCY:
 663                 input_change(client);
 664                 break;
 665
 666         case VIDIOC_G_TUNER:
 667         {
 668                 u8 mode = cx25840_read(client, 0x804);
 669                 u8 pref = cx25840_read(client, 0x809) & 0xf;
 670                 u8 vpres = cx25840_read(client, 0x80a) & 0x10;
 671                 int val = 0;
 672
 673                 vt->capability |=
 674                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
 675                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
 676
 677                 vt->signal = vpres ? 0xffff : 0x0;
 678
 679                 /* get rxsubchans and audmode */
 680                 if ((mode & 0xf) == 1)
 681                         val |= V4L2_TUNER_SUB_STEREO;
 682                 else
 683                         val |= V4L2_TUNER_SUB_MONO;
 684
 685                 if (mode == 2 || mode == 4)
 686                         val |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 687
 688                 if (mode & 0x10)
 689                         val |= V4L2_TUNER_SUB_SAP;
 690
 691                 vt->rxsubchans = val;
 692
 693                 switch (pref) {
 694                 case 0:
 695                         vt->audmode = V4L2_TUNER_MODE_MONO;
 696                         break;
 697                 case 1:
 698                 case 2:
 699                         vt->audmode = V4L2_TUNER_MODE_LANG2;
 700                         break;
 701                 case 4:
 702                 default:
 703                         vt->audmode = V4L2_TUNER_MODE_STEREO;
 704                 }
 705                 break;
 706         }
 707
 708         case VIDIOC_S_TUNER:
 709                 switch (vt->audmode) {
 710                 case V4L2_TUNER_MODE_MONO:
 711                 case V4L2_TUNER_MODE_LANG1:
 712                         /* Force PREF_MODE to MONO */
 713                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
 714                         break;
 715                 case V4L2_TUNER_MODE_STEREO:
 716                         /* Force PREF_MODE to STEREO */
 717                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
 718                         break;
 719                 case V4L2_TUNER_MODE_LANG2:
 720                         /* Force PREF_MODE to LANG2 */
 721                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
 722                         break;
 723                 }
 724                 break;
 725
 726         case VIDIOC_G_FMT:
 727                 result = get_v4lfmt(client, (struct v4l2_format *)arg);
 728                 break;
 729
 730         case VIDIOC_S_FMT:
 731                 result = set_v4lfmt(client, (struct v4l2_format *)arg);
 732                 break;
 733
 734         case VIDIOC_INT_RESET:
 735                 cx25840_initialize(client, 0);
 736                 break;
 737
 738         case VIDIOC_INT_G_CHIP_IDENT:
 739                 *(enum v4l2_chip_ident *)arg =
 740                         V4L2_IDENT_CX25840 + ((cx25840_read(client, 0x100) >> 4) & 0xf);
 741                 break;
 742
 743         default:
 744                 cx25840_err("invalid ioctl %x\n", cmd);
 745                 return -EINVAL;
 746         }
 747
 748         return result;
 749 }
 750
 751 /* ----------------------------------------------------------------------- */
 752
 753 static struct i2c_driver i2c_driver_cx25840;
 754
 755 static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
 756                                  int kind)
 757 {
 758         struct i2c_client *client;
 759         struct cx25840_state *state;
 760         u16 device_id;
 761
 762         /* Check if the adapter supports the needed features
 763          * Not until kernel version 2.6.11 did the bit-algo
 764          * correctly report that it would do an I2C-level xfer */
 765         if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
 766                 return 0;
 767
 768         client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
 769         if (client == 0)
 770                 return -ENOMEM;
 771
 772         memset(client, 0, sizeof(struct i2c_client));
 773         client->addr = address;
 774         client->adapter = adapter;
 775         client->driver = &i2c_driver_cx25840;
 776         client->flags = I2C_CLIENT_ALLOW_USE;
 777         snprintf(client->name, sizeof(client->name) - 1, "cx25840");
 778
 779         cx25840_dbg("detecting cx25840 client on address 0x%x\n", address << 1);
 780
 781         device_id = cx25840_read(client, 0x101) << 8;
 782         device_id |= cx25840_read(client, 0x100);
 783
 784         /* The high byte of the device ID should be
 785          * 0x84 if chip is present */
 786         if ((device_id & 0xff00) != 0x8400) {
 787                 cx25840_dbg("cx25840 not found\n");
 788                 kfree(client);
 789                 return 0;
 790         }
 791
 792         cx25840_info("cx25%3x-2%x found @ 0x%x (%s)\n",
 793                     (device_id & 0xfff0) >> 4,
 794                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : 3,
 795                     address << 1, adapter->name);
 796
 797         state = kmalloc(sizeof(struct cx25840_state), GFP_KERNEL);
 798         if (state == NULL) {
 799                 kfree(client);
 800                 return -ENOMEM;
 801         }
 802
 803         i2c_set_clientdata(client, state);
 804         memset(state, 0, sizeof(struct cx25840_state));
 805         state->input = CX25840_TUNER;
 806         state->audclk_freq = V4L2_AUDCLK_48_KHZ;
 807         state->audio_input = AUDIO_TUNER;
 808         state->cardtype = CARDTYPE_PVR150;
 809
 810         cx25840_initialize(client, 1);
 811
 812         i2c_attach_client(client);
 813
 814         return 0;
 815 }
 816
 817 static int cx25840_attach_adapter(struct i2c_adapter *adapter)
 818 {
 819 #ifdef I2C_CLASS_TV_ANALOG
 820         if (adapter->class & I2C_CLASS_TV_ANALOG)
 821 #else
 822         if (adapter->id == I2C_HW_B_BT848)
 823 #endif
 824                 return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
 825         return 0;
 826 }
 827
 828 static int cx25840_detach_client(struct i2c_client *client)
 829 {
 830         struct cx25840_state *state = i2c_get_clientdata(client);
 831         int err;
 832
 833         err = i2c_detach_client(client);
 834         if (err) {
 835                 return err;
 836         }
 837
 838         kfree(state);
 839         kfree(client);
 840
 841         return 0;
 842 }
 843
 844 /* ----------------------------------------------------------------------- */
 845
 846 static struct i2c_driver i2c_driver_cx25840 = {
 847         .name = "cx25840",
 848
 849         .id = I2C_DRIVERID_CX25840,
 850
 851         .attach_adapter = cx25840_attach_adapter,
 852         .detach_client = cx25840_detach_client,
 853         .command = cx25840_command,
 854         .owner = THIS_MODULE,
 855 };
 856
 857
 858 static int __init m__init(void)
 859 {
 860         return i2c_add_driver(&i2c_driver_cx25840);
 861 }
 862
 863 static void __exit m__exit(void)
 864 {
 865         i2c_del_driver(&i2c_driver_cx25840);
 866 }
 867
 868 module_init(m__init);
 869 module_exit(m__exit);
 870
 871 /* ----------------------------------------------------------------------- */
 872
 873 static void log_status(struct i2c_client *client)
 874 {
 875         static const char *const fmt_strs[] = {
 876                 "0x0",
 877                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 878                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 879                 "0x9", "0xA", "0xB",
 880                 "SECAM",
 881                 "0xD", "0xE", "0xF"
 882         };
 883
 884         struct cx25840_state *state = i2c_get_clientdata(client);
 885         u8 microctrl_vidfmt = cx25840_read(client, 0x80a);
 886         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
 887         u8 gen_stat1 = cx25840_read(client, 0x40d);
 888         u8 download_ctl = cx25840_read(client, 0x803);
 889         u8 mod_det_stat0 = cx25840_read(client, 0x804);
 890         u8 mod_det_stat1 = cx25840_read(client, 0x805);
 891         u8 audio_config = cx25840_read(client, 0x808);
 892         u8 pref_mode = cx25840_read(client, 0x809);
 893         u8 afc0 = cx25840_read(client, 0x80b);
 894         u8 mute_ctl = cx25840_read(client, 0x8d3);
 895         char *p;
 896
 897         cx25840_info("Video signal:              %spresent\n",
 898                     (microctrl_vidfmt & 0x10) ? "" : "not ");
 899         cx25840_info("Detected format:           %s\n",
 900                     fmt_strs[gen_stat1 & 0xf]);
 901
 902         switch (mod_det_stat0) {
 903         case 0x00: p = "mono"; break;
 904         case 0x01: p = "stereo"; break;
 905         case 0x02: p = "dual"; break;
 906         case 0x04: p = "tri"; break;
 907         case 0x10: p = "mono with SAP"; break;
 908         case 0x11: p = "stereo with SAP"; break;
 909         case 0x12: p = "dual with SAP"; break;
 910         case 0x14: p = "tri with SAP"; break;
 911         case 0xfe: p = "forced mode"; break;
 912         default: p = "not defined";
 913         }
 914         cx25840_info("Detected audio mode:       %s\n", p);
 915
 916         switch (mod_det_stat1) {
 917         case 0x00: p = "not defined"; break;
 918         case 0x01: p = "EIAJ"; break;
 919         case 0x02: p = "A2-M"; break;
 920         case 0x03: p = "A2-BG"; break;
 921         case 0x04: p = "A2-DK1"; break;
 922         case 0x05: p = "A2-DK2"; break;
 923         case 0x06: p = "A2-DK3"; break;
 924         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
 925         case 0x08: p = "AM-L"; break;
 926         case 0x09: p = "NICAM-BG"; break;
 927         case 0x0a: p = "NICAM-DK"; break;
 928         case 0x0b: p = "NICAM-I"; break;
 929         case 0x0c: p = "NICAM-L"; break;
 930         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
 931         case 0x0e: p = "IF FM Radio"; break;
 932         case 0x0f: p = "BTSC"; break;
 933         case 0x10: p = "high-deviation FM"; break;
 934         case 0x11: p = "very high-deviation FM"; break;
 935         case 0xfd: p = "unknown audio standard"; break;
 936         case 0xfe: p = "forced audio standard"; break;
 937         case 0xff: p = "no detected audio standard"; break;
 938         default: p = "not defined";
 939         }
 940         cx25840_info("Detected audio standard:   %s\n", p);
 941         cx25840_info("Audio muted:               %s\n",
 942                     (mute_ctl & 0x2) ? "yes" : "no");
 943         cx25840_info("Audio microcontroller:     %s\n",
 944                     (download_ctl & 0x10) ? "running" : "stopped");
 945
 946         switch (audio_config >> 4) {
 947         case 0x00: p = "undefined"; break;
 948         case 0x01: p = "BTSC"; break;
 949         case 0x02: p = "EIAJ"; break;
 950         case 0x03: p = "A2-M"; break;
 951         case 0x04: p = "A2-BG"; break;
 952         case 0x05: p = "A2-DK1"; break;
 953         case 0x06: p = "A2-DK2"; break;
 954         case 0x07: p = "A2-DK3"; break;
 955         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
 956         case 0x09: p = "AM-L"; break;
 957         case 0x0a: p = "NICAM-BG"; break;
 958         case 0x0b: p = "NICAM-DK"; break;
 959         case 0x0c: p = "NICAM-I"; break;
 960         case 0x0d: p = "NICAM-L"; break;
 961         case 0x0e: p = "FM radio"; break;
 962         case 0x0f: p = "automatic detection"; break;
 963         default: p = "undefined";
 964         }
 965         cx25840_info("Configured audio standard: %s\n", p);
 966
 967         if ((audio_config >> 4) < 0xF) {
 968                 switch (audio_config & 0xF) {
 969                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
 970                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
 971                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
 972                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
 973                 case 0x04: p = "STEREO"; break;
 974                 case 0x05: p = "DUAL1 (AB)"; break;
 975                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
 976                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
 977                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
 978                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
 979                 case 0x0a: p = "SAP"; break;
 980                 default: p = "undefined";
 981                 }
 982                 cx25840_info("Configured audio mode:     %s\n", p);
 983         } else {
 984                 switch (audio_config & 0xF) {
 985                 case 0x00: p = "BG"; break;
 986                 case 0x01: p = "DK1"; break;
 987                 case 0x02: p = "DK2"; break;
 988                 case 0x03: p = "DK3"; break;
 989                 case 0x04: p = "I"; break;
 990                 case 0x05: p = "L"; break;
 991                 case 0x06: p = "BTSC"; break;
 992                 case 0x07: p = "EIAJ"; break;
 993                 case 0x08: p = "A2-M"; break;
 994                 case 0x09: p = "FM Radio"; break;
 995                 case 0x0f: p = "automatic standard and mode detection"; break;
 996                 default: p = "undefined";
 997                 }
 998                 cx25840_info("Configured audio system:   %s\n", p);
 999         }
1000
1001         cx25840_info("Specified standard:        %s\n",
1002                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
1003
1004         switch (state->input) {
1005         case CX25840_COMPOSITE0: p = "Composite 0"; break;
1006         case CX25840_COMPOSITE1: p = "Composite 1"; break;
1007         case CX25840_SVIDEO0: p = "S-Video 0"; break;
1008         case CX25840_SVIDEO1: p = "S-Video 1"; break;
1009         case CX25840_TUNER: p = "Tuner"; break;
1010         }
1011         cx25840_info("Specified input:           %s\n", p);
1012         cx25840_info("Specified audio input:     %s\n",
1013                     state->audio_input == 0 ? "Tuner" : "External");
1014
1015         switch (state->audclk_freq) {
1016         case V4L2_AUDCLK_441_KHZ: p = "44.1 kHz"; break;
1017         case V4L2_AUDCLK_48_KHZ: p = "48 kHz"; break;
1018         case V4L2_AUDCLK_32_KHZ: p = "32 kHz"; break;
1019         default: p = "undefined";
1020         }
1021         cx25840_info("Specified audioclock freq: %s\n", p);
1022
1023         switch (pref_mode & 0xf) {
1024         case 0: p = "mono/language A"; break;
1025         case 1: p = "language B"; break;
1026         case 2: p = "language C"; break;
1027         case 3: p = "analog fallback"; break;
1028         case 4: p = "stereo"; break;
1029         case 5: p = "language AC"; break;
1030         case 6: p = "language BC"; break;
1031         case 7: p = "language AB"; break;
1032         default: p = "undefined";
1033         }
1034         cx25840_info("Preferred audio mode:      %s\n", p);
1035
1036         if ((audio_config & 0xf) == 0xf) {
1037                 switch ((afc0 >> 3) & 0x3) {
1038                 case 0: p = "system DK"; break;
1039                 case 1: p = "system L"; break;
1040                 case 2: p = "autodetect"; break;
1041                 default: p = "undefined";
1042                 }
1043                 cx25840_info("Selected 65 MHz format:    %s\n", p);
1044
1045                 switch (afc0 & 0x7) {
1046                 case 0: p = "chroma"; break;
1047                 case 1: p = "BTSC"; break;
1048                 case 2: p = "EIAJ"; break;
1049                 case 3: p = "A2-M"; break;
1050                 case 4: p = "autodetect"; break;
1051                 default: p = "undefined";
1052                 }
1053                 cx25840_info("Selected 45 MHz format:    %s\n", p);
1054         }
1055 }