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;
 337
 338         switch (std) {
 339         /* zero is autodetect */
 340         case 0: fmt = 0x0; break;
 341         /* default ntsc to ntsc-m */
 342         case V4L2_STD_NTSC:
 343         case V4L2_STD_NTSC_M: fmt = 0x1; break;
 344         case V4L2_STD_NTSC_M_JP: fmt = 0x2; break;
 345         case V4L2_STD_NTSC_443: fmt = 0x3; break;
 346         case V4L2_STD_PAL: fmt = 0x4; break;
 347         case V4L2_STD_PAL_M: fmt = 0x5; break;
 348         case V4L2_STD_PAL_N: fmt = 0x6; break;
 349         case V4L2_STD_PAL_Nc: fmt = 0x7; break;
 350         case V4L2_STD_PAL_60: fmt = 0x8; break;
 351         case V4L2_STD_SECAM: fmt = 0xc; break;
 352         default:
 353                 return -ERANGE;
 354         }
 355
 356         cx25840_and_or(client, 0x400, ~0xf, fmt);
 357         cx25840_vbi_setup(client);
 358         return 0;
 359 }
 360
 361 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
 362 {
 363         /* check VID_FMT_SEL first */
 364         u8 fmt = cx25840_read(client, 0x400) & 0xf;
 365
 366         if (!fmt) {
 367                 /* check AFD_FMT_STAT if set to autodetect */
 368                 fmt = cx25840_read(client, 0x40d) & 0xf;
 369         }
 370
 371         switch (fmt) {
 372         case 0x1: return V4L2_STD_NTSC_M;
 373         case 0x2: return V4L2_STD_NTSC_M_JP;
 374         case 0x3: return V4L2_STD_NTSC_443;
 375         case 0x4: return V4L2_STD_PAL;
 376         case 0x5: return V4L2_STD_PAL_M;
 377         case 0x6: return V4L2_STD_PAL_N;
 378         case 0x7: return V4L2_STD_PAL_Nc;
 379         case 0x8: return V4L2_STD_PAL_60;
 380         case 0xc: return V4L2_STD_SECAM;
 381         default: return V4L2_STD_UNKNOWN;
 382         }
 383 }
 384
 385 /* ----------------------------------------------------------------------- */
 386
 387 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 388 {
 389         struct cx25840_state *state = i2c_get_clientdata(client);
 390
 391         switch (ctrl->id) {
 392         case CX25840_CID_CARDTYPE:
 393                 switch (ctrl->value) {
 394                 case CARDTYPE_PVR150:
 395                 case CARDTYPE_PVR150_WORKAROUND:
 396                 case CARDTYPE_PG600:
 397                         state->cardtype = ctrl->value;
 398                         break;
 399                 default:
 400                         return -ERANGE;
 401                 }
 402
 403                 set_input(client, state->input);
 404                 break;
 405
 406         case V4L2_CID_BRIGHTNESS:
 407                 if (ctrl->value < 0 || ctrl->value > 255) {
 408                         cx25840_err("invalid brightness setting %d\n",
 409                                     ctrl->value);
 410                         return -ERANGE;
 411                 }
 412
 413                 cx25840_write(client, 0x414, ctrl->value - 128);
 414                 break;
 415
 416         case V4L2_CID_CONTRAST:
 417                 if (ctrl->value < 0 || ctrl->value > 127) {
 418                         cx25840_err("invalid contrast setting %d\n",
 419                                     ctrl->value);
 420                         return -ERANGE;
 421                 }
 422
 423                 cx25840_write(client, 0x415, ctrl->value << 1);
 424                 break;
 425
 426         case V4L2_CID_SATURATION:
 427                 if (ctrl->value < 0 || ctrl->value > 127) {
 428                         cx25840_err("invalid saturation setting %d\n",
 429                                     ctrl->value);
 430                         return -ERANGE;
 431                 }
 432
 433                 cx25840_write(client, 0x420, ctrl->value << 1);
 434                 cx25840_write(client, 0x421, ctrl->value << 1);
 435                 break;
 436
 437         case V4L2_CID_HUE:
 438                 if (ctrl->value < -127 || ctrl->value > 127) {
 439                         cx25840_err("invalid hue setting %d\n", ctrl->value);
 440                         return -ERANGE;
 441                 }
 442
 443                 cx25840_write(client, 0x422, ctrl->value);
 444                 break;
 445
 446         case V4L2_CID_AUDIO_VOLUME:
 447         case V4L2_CID_AUDIO_BASS:
 448         case V4L2_CID_AUDIO_TREBLE:
 449         case V4L2_CID_AUDIO_BALANCE:
 450         case V4L2_CID_AUDIO_MUTE:
 451                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 452         }
 453
 454         return 0;
 455 }
 456
 457 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 458 {
 459         struct cx25840_state *state = i2c_get_clientdata(client);
 460
 461         switch (ctrl->id) {
 462         case CX25840_CID_CARDTYPE:
 463                 ctrl->value = state->cardtype;
 464                 break;
 465         case V4L2_CID_BRIGHTNESS:
 466                 ctrl->value = cx25840_read(client, 0x414) + 128;
 467                 break;
 468         case V4L2_CID_CONTRAST:
 469                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 470                 break;
 471         case V4L2_CID_SATURATION:
 472                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 473                 break;
 474         case V4L2_CID_HUE:
 475                 ctrl->value = cx25840_read(client, 0x422);
 476                 break;
 477         case V4L2_CID_AUDIO_VOLUME:
 478         case V4L2_CID_AUDIO_BASS:
 479         case V4L2_CID_AUDIO_TREBLE:
 480         case V4L2_CID_AUDIO_BALANCE:
 481         case V4L2_CID_AUDIO_MUTE:
 482                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 483         default:
 484                 return -EINVAL;
 485         }
 486
 487         return 0;
 488 }
 489
 490 /* ----------------------------------------------------------------------- */
 491
 492 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 493 {
 494         switch (fmt->type) {
 495         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 496                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 497         default:
 498                 return -EINVAL;
 499         }
 500
 501         return 0;
 502 }
 503
 504 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 505 {
 506         struct v4l2_pix_format *pix;
 507         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 508         int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);
 509
 510         switch (fmt->type) {
 511         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 512                 pix = &(fmt->fmt.pix);
 513
 514                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 515                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 516
 517                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 518                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 519
 520                 Vlines = pix->height + (is_pal ? 4 : 7);
 521
 522                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 523                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 524                         cx25840_err("%dx%d is not a valid size!\n",
 525                                     pix->width, pix->height);
 526                         return -ERANGE;
 527                 }
 528
 529                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 530                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 531                 VSC &= 0x1fff;
 532
 533                 if (pix->width >= 385)
 534                         filter = 0;
 535                 else if (pix->width > 192)
 536                         filter = 1;
 537                 else if (pix->width > 96)
 538                         filter = 2;
 539                 else
 540                         filter = 3;
 541
 542                 cx25840_dbg("decoder set size %dx%d -> scale  %ux%u\n",
 543                             pix->width, pix->height, HSC, VSC);
 544
 545                 /* HSCALE=HSC */
 546                 cx25840_write(client, 0x418, HSC & 0xff);
 547                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 548                 cx25840_write(client, 0x41a, HSC >> 16);
 549                 /* VSCALE=VSC */
 550                 cx25840_write(client, 0x41c, VSC & 0xff);
 551                 cx25840_write(client, 0x41d, VSC >> 8);
 552                 /* VS_INTRLACE=1 VFILT=filter */
 553                 cx25840_write(client, 0x41e, 0x8 | filter);
 554                 break;
 555
 556         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 557                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 558
 559         case V4L2_BUF_TYPE_VBI_CAPTURE:
 560                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 561
 562         default:
 563                 return -EINVAL;
 564         }
 565
 566         return 0;
 567 }
 568
 569 /* ----------------------------------------------------------------------- */
 570
 571 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 572                            void *arg)
 573 {
 574         struct cx25840_state *state = i2c_get_clientdata(client);
 575         struct v4l2_tuner *vt = arg;
 576         int result = 0;
 577
 578         switch (cmd) {
 579         case 0:
 580                 break;
 581
 582 #ifdef CONFIG_VIDEO_ADV_DEBUG
 583         /* ioctls to allow direct access to the
 584          * cx25840 registers for testing */
 585         case VIDIOC_INT_G_REGISTER:
 586         {
 587                 struct v4l2_register *reg = arg;
 588
 589                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 590                         return -EINVAL;
 591                 reg->val = cx25840_read(client, reg->reg & 0x0fff);
 592                 break;
 593         }
 594
 595         case VIDIOC_INT_S_REGISTER:
 596         {
 597                 struct v4l2_register *reg = arg;
 598
 599                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 600                         return -EINVAL;
 601                 if (!capable(CAP_SYS_ADMIN))
 602                         return -EPERM;
 603                 cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 604                 break;
 605         }
 606 #endif
 607
 608         case VIDIOC_INT_DECODE_VBI_LINE:
 609                 return cx25840_vbi(client, cmd, arg);
 610
 611         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 612         case AUDC_SET_INPUT:
 613                 result = cx25840_audio(client, cmd, arg);
 614                 break;
 615
 616         case VIDIOC_STREAMON:
 617                 cx25840_dbg("enable output\n");
 618                 cx25840_write(client, 0x115, 0x8c);
 619                 cx25840_write(client, 0x116, 0x07);
 620                 break;
 621
 622         case VIDIOC_STREAMOFF:
 623                 cx25840_dbg("disable output\n");
 624                 cx25840_write(client, 0x115, 0x00);
 625                 cx25840_write(client, 0x116, 0x00);
 626                 break;
 627
 628         case VIDIOC_LOG_STATUS:
 629                 log_status(client);
 630                 break;
 631
 632         case VIDIOC_G_CTRL:
 633                 result = get_v4lctrl(client, (struct v4l2_control *)arg);
 634                 break;
 635
 636         case VIDIOC_S_CTRL:
 637                 result = set_v4lctrl(client, (struct v4l2_control *)arg);
 638                 break;
 639
 640         case VIDIOC_G_STD:
 641                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
 642                 break;
 643
 644         case VIDIOC_S_STD:
 645                 result = set_v4lstd(client, *(v4l2_std_id *)arg);
 646                 break;
 647
 648         case VIDIOC_G_INPUT:
 649                 *(int *)arg = state->input;
 650                 break;
 651
 652         case VIDIOC_S_INPUT:
 653                 result = set_input(client, *(int *)arg);
 654                 break;
 655
 656         case VIDIOC_S_FREQUENCY:
 657                 input_change(client);
 658                 break;
 659
 660         case VIDIOC_G_TUNER:
 661         {
 662                 u8 mode = cx25840_read(client, 0x804);
 663                 u8 pref = cx25840_read(client, 0x809) & 0xf;
 664                 u8 vpres = cx25840_read(client, 0x80a) & 0x10;
 665                 int val = 0;
 666
 667                 vt->capability |=
 668                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
 669                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
 670
 671                 vt->signal = vpres ? 0xffff : 0x0;
 672
 673                 /* get rxsubchans and audmode */
 674                 if ((mode & 0xf) == 1)
 675                         val |= V4L2_TUNER_SUB_STEREO;
 676                 else
 677                         val |= V4L2_TUNER_SUB_MONO;
 678
 679                 if (mode == 2 || mode == 4)
 680                         val |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 681
 682                 if (mode & 0x10)
 683                         val |= V4L2_TUNER_SUB_SAP;
 684
 685                 vt->rxsubchans = val;
 686
 687                 switch (pref) {
 688                 case 0:
 689                         vt->audmode = V4L2_TUNER_MODE_MONO;
 690                         break;
 691                 case 1:
 692                 case 2:
 693                         vt->audmode = V4L2_TUNER_MODE_LANG2;
 694                         break;
 695                 case 4:
 696                 default:
 697                         vt->audmode = V4L2_TUNER_MODE_STEREO;
 698                 }
 699                 break;
 700         }
 701
 702         case VIDIOC_S_TUNER:
 703                 switch (vt->audmode) {
 704                 case V4L2_TUNER_MODE_MONO:
 705                 case V4L2_TUNER_MODE_LANG1:
 706                         /* Force PREF_MODE to MONO */
 707                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
 708                         break;
 709                 case V4L2_TUNER_MODE_STEREO:
 710                         /* Force PREF_MODE to STEREO */
 711                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
 712                         break;
 713                 case V4L2_TUNER_MODE_LANG2:
 714                         /* Force PREF_MODE to LANG2 */
 715                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
 716                         break;
 717                 }
 718                 break;
 719
 720         case VIDIOC_G_FMT:
 721                 result = get_v4lfmt(client, (struct v4l2_format *)arg);
 722                 break;
 723
 724         case VIDIOC_S_FMT:
 725                 result = set_v4lfmt(client, (struct v4l2_format *)arg);
 726                 break;
 727
 728         case VIDIOC_INT_RESET:
 729                 cx25840_initialize(client, 0);
 730                 break;
 731
 732         case VIDIOC_INT_G_CHIP_IDENT:
 733                 *(enum v4l2_chip_ident *)arg =
 734                         V4L2_IDENT_CX25840 + ((cx25840_read(client, 0x100) >> 4) & 0xf);
 735                 break;
 736
 737         default:
 738                 cx25840_err("invalid ioctl %x\n", cmd);
 739                 return -EINVAL;
 740         }
 741
 742         return result;
 743 }
 744
 745 /* ----------------------------------------------------------------------- */
 746
 747 static struct i2c_driver i2c_driver_cx25840;
 748
 749 static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
 750                                  int kind)
 751 {
 752         struct i2c_client *client;
 753         struct cx25840_state *state;
 754         u16 device_id;
 755
 756         /* Check if the adapter supports the needed features
 757          * Not until kernel version 2.6.11 did the bit-algo
 758          * correctly report that it would do an I2C-level xfer */
 759         if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
 760                 return 0;
 761
 762         client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
 763         if (client == 0)
 764                 return -ENOMEM;
 765
 766         memset(client, 0, sizeof(struct i2c_client));
 767         client->addr = address;
 768         client->adapter = adapter;
 769         client->driver = &i2c_driver_cx25840;
 770         client->flags = I2C_CLIENT_ALLOW_USE;
 771         snprintf(client->name, sizeof(client->name) - 1, "cx25840");
 772
 773         cx25840_dbg("detecting cx25840 client on address 0x%x\n", address << 1);
 774
 775         device_id = cx25840_read(client, 0x101) << 8;
 776         device_id |= cx25840_read(client, 0x100);
 777
 778         /* The high byte of the device ID should be
 779          * 0x84 if chip is present */
 780         if ((device_id & 0xff00) != 0x8400) {
 781                 cx25840_dbg("cx25840 not found\n");
 782                 kfree(client);
 783                 return 0;
 784         }
 785
 786         cx25840_info("cx25%3x-2%x found @ 0x%x (%s)\n",
 787                     (device_id & 0xfff0) >> 4,
 788                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : 3,
 789                     address << 1, adapter->name);
 790
 791         state = kmalloc(sizeof(struct cx25840_state), GFP_KERNEL);
 792         if (state == NULL) {
 793                 kfree(client);
 794                 return -ENOMEM;
 795         }
 796
 797         i2c_set_clientdata(client, state);
 798         memset(state, 0, sizeof(struct cx25840_state));
 799         state->input = CX25840_TUNER;
 800         state->audclk_freq = V4L2_AUDCLK_48_KHZ;
 801         state->audio_input = AUDIO_TUNER;
 802         state->cardtype = CARDTYPE_PVR150;
 803
 804         cx25840_initialize(client, 1);
 805
 806         i2c_attach_client(client);
 807
 808         return 0;
 809 }
 810
 811 static int cx25840_attach_adapter(struct i2c_adapter *adapter)
 812 {
 813 #ifdef I2C_CLASS_TV_ANALOG
 814         if (adapter->class & I2C_CLASS_TV_ANALOG)
 815 #else
 816         if (adapter->id == I2C_HW_B_BT848)
 817 #endif
 818                 return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
 819         return 0;
 820 }
 821
 822 static int cx25840_detach_client(struct i2c_client *client)
 823 {
 824         struct cx25840_state *state = i2c_get_clientdata(client);
 825         int err;
 826
 827         err = i2c_detach_client(client);
 828         if (err) {
 829                 return err;
 830         }
 831
 832         kfree(state);
 833         kfree(client);
 834
 835         return 0;
 836 }
 837
 838 /* ----------------------------------------------------------------------- */
 839
 840 static struct i2c_driver i2c_driver_cx25840 = {
 841         .name = "cx25840",
 842
 843         .id = I2C_DRIVERID_CX25840,
 844         .flags = I2C_DF_NOTIFY,
 845
 846         .attach_adapter = cx25840_attach_adapter,
 847         .detach_client = cx25840_detach_client,
 848         .command = cx25840_command,
 849         .owner = THIS_MODULE,
 850 };
 851
 852
 853 static int __init m__init(void)
 854 {
 855         return i2c_add_driver(&i2c_driver_cx25840);
 856 }
 857
 858 static void __exit m__exit(void)
 859 {
 860         i2c_del_driver(&i2c_driver_cx25840);
 861 }
 862
 863 module_init(m__init);
 864 module_exit(m__exit);
 865
 866 /* ----------------------------------------------------------------------- */
 867
 868 static void log_status(struct i2c_client *client)
 869 {
 870         static const char *const fmt_strs[] = {
 871                 "0x0",
 872                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 873                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 874                 "0x9", "0xA", "0xB",
 875                 "SECAM",
 876                 "0xD", "0xE", "0xF"
 877         };
 878
 879         struct cx25840_state *state = i2c_get_clientdata(client);
 880         u8 microctrl_vidfmt = cx25840_read(client, 0x80a);
 881         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
 882         u8 gen_stat1 = cx25840_read(client, 0x40d);
 883         u8 download_ctl = cx25840_read(client, 0x803);
 884         u8 mod_det_stat0 = cx25840_read(client, 0x804);
 885         u8 mod_det_stat1 = cx25840_read(client, 0x805);
 886         u8 audio_config = cx25840_read(client, 0x808);
 887         u8 pref_mode = cx25840_read(client, 0x809);
 888         u8 afc0 = cx25840_read(client, 0x80b);
 889         u8 mute_ctl = cx25840_read(client, 0x8d3);
 890         char *p;
 891
 892         cx25840_info("Video signal:              %spresent\n",
 893                     (microctrl_vidfmt & 0x10) ? "" : "not ");
 894         cx25840_info("Detected format:           %s\n",
 895                     fmt_strs[gen_stat1 & 0xf]);
 896
 897         switch (mod_det_stat0) {
 898         case 0x00: p = "mono"; break;
 899         case 0x01: p = "stereo"; break;
 900         case 0x02: p = "dual"; break;
 901         case 0x04: p = "tri"; break;
 902         case 0x10: p = "mono with SAP"; break;
 903         case 0x11: p = "stereo with SAP"; break;
 904         case 0x12: p = "dual with SAP"; break;
 905         case 0x14: p = "tri with SAP"; break;
 906         case 0xfe: p = "forced mode"; break;
 907         default: p = "not defined";
 908         }
 909         cx25840_info("Detected audio mode:       %s\n", p);
 910
 911         switch (mod_det_stat1) {
 912         case 0x00: p = "not defined"; break;
 913         case 0x01: p = "EIAJ"; break;
 914         case 0x02: p = "A2-M"; break;
 915         case 0x03: p = "A2-BG"; break;
 916         case 0x04: p = "A2-DK1"; break;
 917         case 0x05: p = "A2-DK2"; break;
 918         case 0x06: p = "A2-DK3"; break;
 919         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
 920         case 0x08: p = "AM-L"; break;
 921         case 0x09: p = "NICAM-BG"; break;
 922         case 0x0a: p = "NICAM-DK"; break;
 923         case 0x0b: p = "NICAM-I"; break;
 924         case 0x0c: p = "NICAM-L"; break;
 925         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
 926         case 0x0e: p = "IF FM Radio"; break;
 927         case 0x0f: p = "BTSC"; break;
 928         case 0x10: p = "high-deviation FM"; break;
 929         case 0x11: p = "very high-deviation FM"; break;
 930         case 0xfd: p = "unknown audio standard"; break;
 931         case 0xfe: p = "forced audio standard"; break;
 932         case 0xff: p = "no detected audio standard"; break;
 933         default: p = "not defined";
 934         }
 935         cx25840_info("Detected audio standard:   %s\n", p);
 936         cx25840_info("Audio muted:               %s\n",
 937                     (mute_ctl & 0x2) ? "yes" : "no");
 938         cx25840_info("Audio microcontroller:     %s\n",
 939                     (download_ctl & 0x10) ? "running" : "stopped");
 940
 941         switch (audio_config >> 4) {
 942         case 0x00: p = "undefined"; break;
 943         case 0x01: p = "BTSC"; break;
 944         case 0x02: p = "EIAJ"; break;
 945         case 0x03: p = "A2-M"; break;
 946         case 0x04: p = "A2-BG"; break;
 947         case 0x05: p = "A2-DK1"; break;
 948         case 0x06: p = "A2-DK2"; break;
 949         case 0x07: p = "A2-DK3"; break;
 950         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
 951         case 0x09: p = "AM-L"; break;
 952         case 0x0a: p = "NICAM-BG"; break;
 953         case 0x0b: p = "NICAM-DK"; break;
 954         case 0x0c: p = "NICAM-I"; break;
 955         case 0x0d: p = "NICAM-L"; break;
 956         case 0x0e: p = "FM radio"; break;
 957         case 0x0f: p = "automatic detection"; break;
 958         default: p = "undefined";
 959         }
 960         cx25840_info("Configured audio standard: %s\n", p);
 961
 962         if ((audio_config >> 4) < 0xF) {
 963                 switch (audio_config & 0xF) {
 964                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
 965                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
 966                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
 967                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
 968                 case 0x04: p = "STEREO"; break;
 969                 case 0x05: p = "DUAL1 (AB)"; break;
 970                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
 971                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
 972                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
 973                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
 974                 case 0x0a: p = "SAP"; break;
 975                 default: p = "undefined";
 976                 }
 977                 cx25840_info("Configured audio mode:     %s\n", p);
 978         } else {
 979                 switch (audio_config & 0xF) {
 980                 case 0x00: p = "BG"; break;
 981                 case 0x01: p = "DK1"; break;
 982                 case 0x02: p = "DK2"; break;
 983                 case 0x03: p = "DK3"; break;
 984                 case 0x04: p = "I"; break;
 985                 case 0x05: p = "L"; break;
 986                 case 0x06: p = "BTSC"; break;
 987                 case 0x07: p = "EIAJ"; break;
 988                 case 0x08: p = "A2-M"; break;
 989                 case 0x09: p = "FM Radio"; break;
 990                 case 0x0f: p = "automatic standard and mode detection"; break;
 991                 default: p = "undefined";
 992                 }
 993                 cx25840_info("Configured audio system:   %s\n", p);
 994         }
 995
 996         cx25840_info("Specified standard:        %s\n",
 997                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
 998
 999         switch (state->input) {
1000         case CX25840_COMPOSITE0: p = "Composite 0"; break;
1001         case CX25840_COMPOSITE1: p = "Composite 1"; break;
1002         case CX25840_SVIDEO0: p = "S-Video 0"; break;
1003         case CX25840_SVIDEO1: p = "S-Video 1"; break;
1004         case CX25840_TUNER: p = "Tuner"; break;
1005         }
1006         cx25840_info("Specified input:           %s\n", p);
1007         cx25840_info("Specified audio input:     %s\n",
1008                     state->audio_input == 0 ? "Tuner" : "External");
1009
1010         switch (state->audclk_freq) {
1011         case V4L2_AUDCLK_441_KHZ: p = "44.1 kHz"; break;
1012         case V4L2_AUDCLK_48_KHZ: p = "48 kHz"; break;
1013         case V4L2_AUDCLK_32_KHZ: p = "32 kHz"; break;
1014         default: p = "undefined";
1015         }
1016         cx25840_info("Specified audioclock freq: %s\n", p);
1017
1018         switch (pref_mode & 0xf) {
1019         case 0: p = "mono/language A"; break;
1020         case 1: p = "language B"; break;
1021         case 2: p = "language C"; break;
1022         case 3: p = "analog fallback"; break;
1023         case 4: p = "stereo"; break;
1024         case 5: p = "language AC"; break;
1025         case 6: p = "language BC"; break;
1026         case 7: p = "language AB"; break;
1027         default: p = "undefined";
1028         }
1029         cx25840_info("Preferred audio mode:      %s\n", p);
1030
1031         if ((audio_config & 0xf) == 0xf) {
1032                 switch ((afc0 >> 3) & 0x3) {
1033                 case 0: p = "system DK"; break;
1034                 case 1: p = "system L"; break;
1035                 case 2: p = "autodetect"; break;
1036                 default: p = "undefined";
1037                 }
1038                 cx25840_info("Selected 65 MHz format:    %s\n", p);
1039
1040                 switch (afc0 & 0x7) {
1041                 case 0: p = "chroma"; break;
1042                 case 1: p = "BTSC"; break;
1043                 case 2: p = "EIAJ"; break;
1044                 case 3: p = "A2-M"; break;
1045                 case 4: p = "autodetect"; break;
1046                 default: p = "undefined";
1047                 }
1048                 cx25840_info("Selected 45 MHz format:    %s\n", p);
1049         }
1050 }