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         v4l2_std_id std = cx25840_get_v4lstd(client);
 212
 213         if (std & V4L2_STD_PAL) {
 214                 /* Follow tuner change procedure for PAL */
 215                 cx25840_write(client, 0x808, 0xff);
 216                 cx25840_write(client, 0x80b, 0x10);
 217         } else if (std & V4L2_STD_SECAM) {
 218                 /* Select autodetect for SECAM */
 219                 cx25840_write(client, 0x808, 0xff);
 220                 cx25840_write(client, 0x80b, 0x10);
 221         } else if (std & V4L2_STD_NTSC) {
 222                 /* NTSC */
 223                 cx25840_write(client, 0x808, 0xf6);
 224                 cx25840_write(client, 0x80b, 0x00);
 225         }
 226
 227         if (cx25840_read(client, 0x803) & 0x10) {
 228                 /* restart audio decoder microcontroller */
 229                 cx25840_and_or(client, 0x803, ~0x10, 0x00);
 230                 cx25840_and_or(client, 0x803, ~0x10, 0x10);
 231         }
 232 }
 233
 234 static int set_input(struct i2c_client *client, enum cx25840_input input)
 235 {
 236         struct cx25840_state *state = i2c_get_clientdata(client);
 237
 238         cx25840_dbg("decoder set input (%d)\n", input);
 239
 240         switch (input) {
 241         case CX25840_TUNER:
 242                 cx25840_dbg("now setting Tuner input\n");
 243
 244                 if (state->cardtype == CARDTYPE_PVR150) {
 245                         /* CH_SEL_ADC2=1 */
 246                         cx25840_and_or(client, 0x102, ~0x2, 0x02);
 247                 }
 248
 249                 /* Video Input Control */
 250                 if (state->cardtype == CARDTYPE_PG600) {
 251                         cx25840_write(client, 0x103, 0x11);
 252                 } else {
 253                         cx25840_write(client, 0x103, 0x46);
 254                 }
 255
 256                 /* INPUT_MODE=0 */
 257                 cx25840_and_or(client, 0x401, ~0x6, 0x00);
 258                 break;
 259
 260         case CX25840_COMPOSITE0:
 261         case CX25840_COMPOSITE1:
 262                 cx25840_dbg("now setting Composite input\n");
 263
 264                 /* Video Input Control */
 265                 if (state->cardtype == CARDTYPE_PG600) {
 266                         cx25840_write(client, 0x103, 0x00);
 267                 } else {
 268                         cx25840_write(client, 0x103, 0x02);
 269                 }
 270
 271                 /* INPUT_MODE=0 */
 272                 cx25840_and_or(client, 0x401, ~0x6, 0x00);
 273                 break;
 274
 275         case CX25840_SVIDEO0:
 276         case CX25840_SVIDEO1:
 277                 cx25840_dbg("now setting S-Video input\n");
 278
 279                 /* CH_SEL_ADC2=0 */
 280                 cx25840_and_or(client, 0x102, ~0x2, 0x00);
 281
 282                 /* Video Input Control */
 283                 if (state->cardtype == CARDTYPE_PG600) {
 284                         cx25840_write(client, 0x103, 0x02);
 285                 } else {
 286                         cx25840_write(client, 0x103, 0x10);
 287                 }
 288
 289                 /* INPUT_MODE=1 */
 290                 cx25840_and_or(client, 0x401, ~0x6, 0x02);
 291                 break;
 292
 293         default:
 294                 cx25840_err("%d is not a valid input!\n", input);
 295                 return -EINVAL;
 296         }
 297
 298         state->input = input;
 299         input_change(client);
 300         return 0;
 301 }
 302
 303 /* ----------------------------------------------------------------------- */
 304
 305 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
 306 {
 307         u8 fmt;
 308
 309         switch (std) {
 310         /* zero is autodetect */
 311         case 0: fmt = 0x0; break;
 312         /* default ntsc to ntsc-m */
 313         case V4L2_STD_NTSC:
 314         case V4L2_STD_NTSC_M: fmt = 0x1; break;
 315         case V4L2_STD_NTSC_M_JP: fmt = 0x2; break;
 316         case V4L2_STD_NTSC_443: fmt = 0x3; break;
 317         case V4L2_STD_PAL: fmt = 0x4; break;
 318         case V4L2_STD_PAL_M: fmt = 0x5; break;
 319         case V4L2_STD_PAL_N: fmt = 0x6; break;
 320         case V4L2_STD_PAL_Nc: fmt = 0x7; break;
 321         case V4L2_STD_PAL_60: fmt = 0x8; break;
 322         case V4L2_STD_SECAM: fmt = 0xc; break;
 323         default:
 324                 return -ERANGE;
 325         }
 326
 327         cx25840_and_or(client, 0x400, ~0xf, fmt);
 328         cx25840_vbi_setup(client);
 329         return 0;
 330 }
 331
 332 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
 333 {
 334         /* check VID_FMT_SEL first */
 335         u8 fmt = cx25840_read(client, 0x400) & 0xf;
 336
 337         if (!fmt) {
 338                 /* check AFD_FMT_STAT if set to autodetect */
 339                 fmt = cx25840_read(client, 0x40d) & 0xf;
 340         }
 341
 342         switch (fmt) {
 343         case 0x1: return V4L2_STD_NTSC_M;
 344         case 0x2: return V4L2_STD_NTSC_M_JP;
 345         case 0x3: return V4L2_STD_NTSC_443;
 346         case 0x4: return V4L2_STD_PAL;
 347         case 0x5: return V4L2_STD_PAL_M;
 348         case 0x6: return V4L2_STD_PAL_N;
 349         case 0x7: return V4L2_STD_PAL_Nc;
 350         case 0x8: return V4L2_STD_PAL_60;
 351         case 0xc: return V4L2_STD_SECAM;
 352         default: return V4L2_STD_UNKNOWN;
 353         }
 354 }
 355
 356 /* ----------------------------------------------------------------------- */
 357
 358 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 359 {
 360         struct cx25840_state *state = i2c_get_clientdata(client);
 361
 362         switch (ctrl->id) {
 363         case CX25840_CID_CARDTYPE:
 364                 switch (ctrl->value) {
 365                 case CARDTYPE_PVR150:
 366                 case CARDTYPE_PG600:
 367                         state->cardtype = ctrl->value;
 368                         break;
 369                 default:
 370                         return -ERANGE;
 371                 }
 372
 373                 set_input(client, state->input);
 374                 break;
 375
 376         case V4L2_CID_BRIGHTNESS:
 377                 if (ctrl->value < 0 || ctrl->value > 255) {
 378                         cx25840_err("invalid brightness setting %d\n",
 379                                     ctrl->value);
 380                         return -ERANGE;
 381                 }
 382
 383                 cx25840_write(client, 0x414, ctrl->value - 128);
 384                 break;
 385
 386         case V4L2_CID_CONTRAST:
 387                 if (ctrl->value < 0 || ctrl->value > 127) {
 388                         cx25840_err("invalid contrast setting %d\n",
 389                                     ctrl->value);
 390                         return -ERANGE;
 391                 }
 392
 393                 cx25840_write(client, 0x415, ctrl->value << 1);
 394                 break;
 395
 396         case V4L2_CID_SATURATION:
 397                 if (ctrl->value < 0 || ctrl->value > 127) {
 398                         cx25840_err("invalid saturation setting %d\n",
 399                                     ctrl->value);
 400                         return -ERANGE;
 401                 }
 402
 403                 cx25840_write(client, 0x420, ctrl->value << 1);
 404                 cx25840_write(client, 0x421, ctrl->value << 1);
 405                 break;
 406
 407         case V4L2_CID_HUE:
 408                 if (ctrl->value < -127 || ctrl->value > 127) {
 409                         cx25840_err("invalid hue setting %d\n", ctrl->value);
 410                         return -ERANGE;
 411                 }
 412
 413                 cx25840_write(client, 0x422, ctrl->value);
 414                 break;
 415
 416         case V4L2_CID_AUDIO_VOLUME:
 417         case V4L2_CID_AUDIO_BASS:
 418         case V4L2_CID_AUDIO_TREBLE:
 419         case V4L2_CID_AUDIO_BALANCE:
 420         case V4L2_CID_AUDIO_MUTE:
 421                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 422         }
 423
 424         return 0;
 425 }
 426
 427 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 428 {
 429         struct cx25840_state *state = i2c_get_clientdata(client);
 430
 431         switch (ctrl->id) {
 432         case CX25840_CID_CARDTYPE:
 433                 ctrl->value = state->cardtype;
 434                 break;
 435         case V4L2_CID_BRIGHTNESS:
 436                 ctrl->value = cx25840_read(client, 0x414) + 128;
 437                 break;
 438         case V4L2_CID_CONTRAST:
 439                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 440                 break;
 441         case V4L2_CID_SATURATION:
 442                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 443                 break;
 444         case V4L2_CID_HUE:
 445                 ctrl->value = cx25840_read(client, 0x422);
 446                 break;
 447         case V4L2_CID_AUDIO_VOLUME:
 448         case V4L2_CID_AUDIO_BASS:
 449         case V4L2_CID_AUDIO_TREBLE:
 450         case V4L2_CID_AUDIO_BALANCE:
 451         case V4L2_CID_AUDIO_MUTE:
 452                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 453         default:
 454                 return -EINVAL;
 455         }
 456
 457         return 0;
 458 }
 459
 460 /* ----------------------------------------------------------------------- */
 461
 462 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 463 {
 464         switch (fmt->type) {
 465         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 466                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 467         default:
 468                 return -EINVAL;
 469         }
 470
 471         return 0;
 472 }
 473
 474 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 475 {
 476         struct v4l2_pix_format *pix;
 477         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 478         int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);
 479
 480         switch (fmt->type) {
 481         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 482                 pix = &(fmt->fmt.pix);
 483
 484                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 485                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 486
 487                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 488                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 489
 490                 Vlines = pix->height + (is_pal ? 4 : 7);
 491
 492                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 493                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 494                         cx25840_err("%dx%d is not a valid size!\n",
 495                                     pix->width, pix->height);
 496                         return -ERANGE;
 497                 }
 498
 499                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 500                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 501                 VSC &= 0x1fff;
 502
 503                 if (pix->width >= 385)
 504                         filter = 0;
 505                 else if (pix->width > 192)
 506                         filter = 1;
 507                 else if (pix->width > 96)
 508                         filter = 2;
 509                 else
 510                         filter = 3;
 511
 512                 cx25840_dbg("decoder set size %dx%d -> scale  %ux%u\n",
 513                             pix->width, pix->height, HSC, VSC);
 514
 515                 /* HSCALE=HSC */
 516                 cx25840_write(client, 0x418, HSC & 0xff);
 517                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 518                 cx25840_write(client, 0x41a, HSC >> 16);
 519                 /* VSCALE=VSC */
 520                 cx25840_write(client, 0x41c, VSC & 0xff);
 521                 cx25840_write(client, 0x41d, VSC >> 8);
 522                 /* VS_INTRLACE=1 VFILT=filter */
 523                 cx25840_write(client, 0x41e, 0x8 | filter);
 524                 break;
 525
 526         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 527                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 528
 529         case V4L2_BUF_TYPE_VBI_CAPTURE:
 530                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 531
 532         default:
 533                 return -EINVAL;
 534         }
 535
 536         return 0;
 537 }
 538
 539 /* ----------------------------------------------------------------------- */
 540
 541 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 542                            void *arg)
 543 {
 544         struct cx25840_state *state = i2c_get_clientdata(client);
 545         struct v4l2_tuner *vt = arg;
 546         int result = 0;
 547
 548         switch (cmd) {
 549         case 0:
 550                 break;
 551
 552 #ifdef CONFIG_VIDEO_ADV_DEBUG
 553         /* ioctls to allow direct access to the
 554          * cx25840 registers for testing */
 555         case VIDIOC_INT_G_REGISTER:
 556         {
 557                 struct v4l2_register *reg = arg;
 558
 559                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 560                         return -EINVAL;
 561                 reg->val = cx25840_read(client, reg->reg & 0x0fff);
 562                 break;
 563         }
 564
 565         case VIDIOC_INT_S_REGISTER:
 566         {
 567                 struct v4l2_register *reg = arg;
 568
 569                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 570                         return -EINVAL;
 571                 if (!capable(CAP_SYS_ADMIN))
 572                         return -EPERM;
 573                 cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 574                 break;
 575         }
 576 #endif
 577
 578         case VIDIOC_INT_DECODE_VBI_LINE:
 579                 return cx25840_vbi(client, cmd, arg);
 580
 581         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 582         case AUDC_SET_INPUT:
 583                 result = cx25840_audio(client, cmd, arg);
 584                 break;
 585
 586         case VIDIOC_STREAMON:
 587                 cx25840_dbg("enable output\n");
 588                 cx25840_write(client, 0x115, 0x8c);
 589                 cx25840_write(client, 0x116, 0x07);
 590                 break;
 591
 592         case VIDIOC_STREAMOFF:
 593                 cx25840_dbg("disable output\n");
 594                 cx25840_write(client, 0x115, 0x00);
 595                 cx25840_write(client, 0x116, 0x00);
 596                 break;
 597
 598         case VIDIOC_LOG_STATUS:
 599                 log_status(client);
 600                 break;
 601
 602         case VIDIOC_G_CTRL:
 603                 result = get_v4lctrl(client, (struct v4l2_control *)arg);
 604                 break;
 605
 606         case VIDIOC_S_CTRL:
 607                 result = set_v4lctrl(client, (struct v4l2_control *)arg);
 608                 break;
 609
 610         case VIDIOC_G_STD:
 611                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
 612                 break;
 613
 614         case VIDIOC_S_STD:
 615                 result = set_v4lstd(client, *(v4l2_std_id *)arg);
 616                 break;
 617
 618         case VIDIOC_G_INPUT:
 619                 *(int *)arg = state->input;
 620                 break;
 621
 622         case VIDIOC_S_INPUT:
 623                 result = set_input(client, *(int *)arg);
 624                 break;
 625
 626         case VIDIOC_S_FREQUENCY:
 627                 input_change(client);
 628                 break;
 629
 630         case VIDIOC_G_TUNER:
 631         {
 632                 u8 mode = cx25840_read(client, 0x804);
 633                 u8 pref = cx25840_read(client, 0x809) & 0xf;
 634                 u8 vpres = cx25840_read(client, 0x80a) & 0x10;
 635                 int val = 0;
 636
 637                 vt->capability |=
 638                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
 639                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
 640
 641                 vt->signal = vpres ? 0xffff : 0x0;
 642
 643                 /* get rxsubchans and audmode */
 644                 if ((mode & 0xf) == 1)
 645                         val |= V4L2_TUNER_SUB_STEREO;
 646                 else
 647                         val |= V4L2_TUNER_SUB_MONO;
 648
 649                 if (mode == 2 || mode == 4)
 650                         val |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 651
 652                 if (mode & 0x10)
 653                         val |= V4L2_TUNER_SUB_SAP;
 654
 655                 vt->rxsubchans = val;
 656
 657                 switch (pref) {
 658                 case 0:
 659                         vt->audmode = V4L2_TUNER_MODE_MONO;
 660                         break;
 661                 case 1:
 662                 case 2:
 663                         vt->audmode = V4L2_TUNER_MODE_LANG2;
 664                         break;
 665                 case 4:
 666                 default:
 667                         vt->audmode = V4L2_TUNER_MODE_STEREO;
 668                 }
 669                 break;
 670         }
 671
 672         case VIDIOC_S_TUNER:
 673                 switch (vt->audmode) {
 674                 case V4L2_TUNER_MODE_MONO:
 675                 case V4L2_TUNER_MODE_LANG1:
 676                         /* Force PREF_MODE to MONO */
 677                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
 678                         break;
 679                 case V4L2_TUNER_MODE_STEREO:
 680                         /* Force PREF_MODE to STEREO */
 681                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
 682                         break;
 683                 case V4L2_TUNER_MODE_LANG2:
 684                         /* Force PREF_MODE to LANG2 */
 685                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
 686                         break;
 687                 }
 688                 break;
 689
 690         case VIDIOC_G_FMT:
 691                 result = get_v4lfmt(client, (struct v4l2_format *)arg);
 692                 break;
 693
 694         case VIDIOC_S_FMT:
 695                 result = set_v4lfmt(client, (struct v4l2_format *)arg);
 696                 break;
 697
 698         case VIDIOC_INT_RESET:
 699                 cx25840_initialize(client, 0);
 700                 break;
 701
 702         case VIDIOC_INT_G_CHIP_IDENT:
 703                 *(enum v4l2_chip_ident *)arg =
 704                         V4L2_IDENT_CX25840 + ((cx25840_read(client, 0x100) >> 4) & 0xf);
 705                 break;
 706
 707         default:
 708                 cx25840_err("invalid ioctl %x\n", cmd);
 709                 return -EINVAL;
 710         }
 711
 712         return result;
 713 }
 714
 715 /* ----------------------------------------------------------------------- */
 716
 717 struct i2c_driver i2c_driver_cx25840;
 718
 719 static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
 720                                  int kind)
 721 {
 722         struct i2c_client *client;
 723         struct cx25840_state *state;
 724         u16 device_id;
 725
 726         /* Check if the adapter supports the needed features
 727          * Not until kernel version 2.6.11 did the bit-algo
 728          * correctly report that it would do an I2C-level xfer */
 729         if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
 730                 return 0;
 731
 732         client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
 733         if (client == 0)
 734                 return -ENOMEM;
 735
 736         memset(client, 0, sizeof(struct i2c_client));
 737         client->addr = address;
 738         client->adapter = adapter;
 739         client->driver = &i2c_driver_cx25840;
 740         client->flags = I2C_CLIENT_ALLOW_USE;
 741         snprintf(client->name, sizeof(client->name) - 1, "cx25840");
 742
 743         cx25840_dbg("detecting cx25840 client on address 0x%x\n", address << 1);
 744
 745         device_id = cx25840_read(client, 0x101) << 8;
 746         device_id |= cx25840_read(client, 0x100);
 747
 748         /* The high byte of the device ID should be
 749          * 0x84 if chip is present */
 750         if ((device_id & 0xff00) != 0x8400) {
 751                 cx25840_dbg("cx25840 not found\n");
 752                 kfree(client);
 753                 return 0;
 754         }
 755
 756         cx25840_info("cx25%3x-2%x found @ 0x%x (%s)\n",
 757                     (device_id & 0xfff0) >> 4,
 758                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : 3,
 759                     address << 1, adapter->name);
 760
 761         state = kmalloc(sizeof(struct cx25840_state), GFP_KERNEL);
 762         if (state == NULL) {
 763                 kfree(client);
 764                 return -ENOMEM;
 765         }
 766
 767         i2c_set_clientdata(client, state);
 768         memset(state, 0, sizeof(struct cx25840_state));
 769         state->input = CX25840_TUNER;
 770         state->audclk_freq = V4L2_AUDCLK_48_KHZ;
 771         state->audio_input = AUDIO_TUNER;
 772         state->cardtype = CARDTYPE_PVR150;
 773
 774         cx25840_initialize(client, 1);
 775
 776         i2c_attach_client(client);
 777
 778         return 0;
 779 }
 780
 781 static int cx25840_attach_adapter(struct i2c_adapter *adapter)
 782 {
 783 #ifdef I2C_CLASS_TV_ANALOG
 784         if (adapter->class & I2C_CLASS_TV_ANALOG)
 785 #else
 786         if (adapter->id == I2C_HW_B_BT848)
 787 #endif
 788                 return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
 789         return 0;
 790 }
 791
 792 static int cx25840_detach_client(struct i2c_client *client)
 793 {
 794         struct cx25840_state *state = i2c_get_clientdata(client);
 795         int err;
 796
 797         err = i2c_detach_client(client);
 798         if (err) {
 799                 return err;
 800         }
 801
 802         kfree(state);
 803         kfree(client);
 804
 805         return 0;
 806 }
 807
 808 /* ----------------------------------------------------------------------- */
 809
 810 struct i2c_driver i2c_driver_cx25840 = {
 811         .name = "cx25840",
 812
 813         .id = I2C_DRIVERID_CX25840,
 814         .flags = I2C_DF_NOTIFY,
 815
 816         .attach_adapter = cx25840_attach_adapter,
 817         .detach_client = cx25840_detach_client,
 818         .command = cx25840_command,
 819         .owner = THIS_MODULE,
 820 };
 821
 822
 823 static int __init m__init(void)
 824 {
 825         return i2c_add_driver(&i2c_driver_cx25840);
 826 }
 827
 828 static void __exit m__exit(void)
 829 {
 830         i2c_del_driver(&i2c_driver_cx25840);
 831 }
 832
 833 module_init(m__init);
 834 module_exit(m__exit);
 835
 836 /* ----------------------------------------------------------------------- */
 837
 838 static void log_status(struct i2c_client *client)
 839 {
 840         static const char *const fmt_strs[] = {
 841                 "0x0",
 842                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 843                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 844                 "0x9", "0xA", "0xB",
 845                 "SECAM",
 846                 "0xD", "0xE", "0xF"
 847         };
 848
 849         struct cx25840_state *state = i2c_get_clientdata(client);
 850         u8 microctrl_vidfmt = cx25840_read(client, 0x80a);
 851         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
 852         u8 gen_stat1 = cx25840_read(client, 0x40d);
 853         u8 download_ctl = cx25840_read(client, 0x803);
 854         u8 mod_det_stat0 = cx25840_read(client, 0x804);
 855         u8 mod_det_stat1 = cx25840_read(client, 0x805);
 856         u8 audio_config = cx25840_read(client, 0x808);
 857         u8 pref_mode = cx25840_read(client, 0x809);
 858         u8 afc0 = cx25840_read(client, 0x80b);
 859         u8 mute_ctl = cx25840_read(client, 0x8d3);
 860         char *p;
 861
 862         cx25840_info("Video signal:              %spresent\n",
 863                     (microctrl_vidfmt & 0x10) ? "" : "not ");
 864         cx25840_info("Detected format:           %s\n",
 865                     fmt_strs[gen_stat1 & 0xf]);
 866
 867         switch (mod_det_stat0) {
 868         case 0x00: p = "mono"; break;
 869         case 0x01: p = "stereo"; break;
 870         case 0x02: p = "dual"; break;
 871         case 0x04: p = "tri"; break;
 872         case 0x10: p = "mono with SAP"; break;
 873         case 0x11: p = "stereo with SAP"; break;
 874         case 0x12: p = "dual with SAP"; break;
 875         case 0x14: p = "tri with SAP"; break;
 876         case 0xfe: p = "forced mode"; break;
 877         default: p = "not defined";
 878         }
 879         cx25840_info("Detected audio mode:       %s\n", p);
 880
 881         switch (mod_det_stat1) {
 882         case 0x00: p = "not defined"; break;
 883         case 0x01: p = "EIAJ"; break;
 884         case 0x02: p = "A2-M"; break;
 885         case 0x03: p = "A2-BG"; break;
 886         case 0x04: p = "A2-DK1"; break;
 887         case 0x05: p = "A2-DK2"; break;
 888         case 0x06: p = "A2-DK3"; break;
 889         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
 890         case 0x08: p = "AM-L"; break;
 891         case 0x09: p = "NICAM-BG"; break;
 892         case 0x0a: p = "NICAM-DK"; break;
 893         case 0x0b: p = "NICAM-I"; break;
 894         case 0x0c: p = "NICAM-L"; break;
 895         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
 896         case 0x0e: p = "IF FM Radio"; break;
 897         case 0x0f: p = "BTSC"; break;
 898         case 0x10: p = "high-deviation FM"; break;
 899         case 0x11: p = "very high-deviation FM"; break;
 900         case 0xfd: p = "unknown audio standard"; break;
 901         case 0xfe: p = "forced audio standard"; break;
 902         case 0xff: p = "no detected audio standard"; break;
 903         default: p = "not defined";
 904         }
 905         cx25840_info("Detected audio standard:   %s\n", p);
 906         cx25840_info("Audio muted:               %s\n",
 907                     (mute_ctl & 0x2) ? "yes" : "no");
 908         cx25840_info("Audio microcontroller:     %s\n",
 909                     (download_ctl & 0x10) ? "running" : "stopped");
 910
 911         switch (audio_config >> 4) {
 912         case 0x00: p = "undefined"; break;
 913         case 0x01: p = "BTSC"; break;
 914         case 0x02: p = "EIAJ"; break;
 915         case 0x03: p = "A2-M"; break;
 916         case 0x04: p = "A2-BG"; break;
 917         case 0x05: p = "A2-DK1"; break;
 918         case 0x06: p = "A2-DK2"; break;
 919         case 0x07: p = "A2-DK3"; break;
 920         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
 921         case 0x09: p = "AM-L"; break;
 922         case 0x0a: p = "NICAM-BG"; break;
 923         case 0x0b: p = "NICAM-DK"; break;
 924         case 0x0c: p = "NICAM-I"; break;
 925         case 0x0d: p = "NICAM-L"; break;
 926         case 0x0e: p = "FM radio"; break;
 927         case 0x0f: p = "automatic detection"; break;
 928         default: p = "undefined";
 929         }
 930         cx25840_info("Configured audio standard: %s\n", p);
 931
 932         if ((audio_config >> 4) < 0xF) {
 933                 switch (audio_config & 0xF) {
 934                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
 935                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
 936                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
 937                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
 938                 case 0x04: p = "STEREO"; break;
 939                 case 0x05: p = "DUAL1 (AB)"; break;
 940                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
 941                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
 942                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
 943                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
 944                 case 0x0a: p = "SAP"; break;
 945                 default: p = "undefined";
 946                 }
 947                 cx25840_info("Configured audio mode:     %s\n", p);
 948         } else {
 949                 switch (audio_config & 0xF) {
 950                 case 0x00: p = "BG"; break;
 951                 case 0x01: p = "DK1"; break;
 952                 case 0x02: p = "DK2"; break;
 953                 case 0x03: p = "DK3"; break;
 954                 case 0x04: p = "I"; break;
 955                 case 0x05: p = "L"; break;
 956                 case 0x06: p = "BTSC"; break;
 957                 case 0x07: p = "EIAJ"; break;
 958                 case 0x08: p = "A2-M"; break;
 959                 case 0x09: p = "FM Radio"; break;
 960                 case 0x0f: p = "automatic standard and mode detection"; break;
 961                 default: p = "undefined";
 962                 }
 963                 cx25840_info("Configured audio system:   %s\n", p);
 964         }
 965
 966         cx25840_info("Specified standard:        %s\n",
 967                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
 968
 969         switch (state->input) {
 970         case CX25840_COMPOSITE0: p = "Composite 0"; break;
 971         case CX25840_COMPOSITE1: p = "Composite 1"; break;
 972         case CX25840_SVIDEO0: p = "S-Video 0"; break;
 973         case CX25840_SVIDEO1: p = "S-Video 1"; break;
 974         case CX25840_TUNER: p = "Tuner"; break;
 975         }
 976         cx25840_info("Specified input:           %s\n", p);
 977         cx25840_info("Specified audio input:     %s\n",
 978                     state->audio_input == 0 ? "Tuner" : "External");
 979
 980         switch (state->audclk_freq) {
 981         case V4L2_AUDCLK_441_KHZ: p = "44.1 kHz"; break;
 982         case V4L2_AUDCLK_48_KHZ: p = "48 kHz"; break;
 983         case V4L2_AUDCLK_32_KHZ: p = "32 kHz"; break;
 984         default: p = "undefined";
 985         }
 986         cx25840_info("Specified audioclock freq: %s\n", p);
 987
 988         switch (pref_mode & 0xf) {
 989         case 0: p = "mono/language A"; break;
 990         case 1: p = "language B"; break;
 991         case 2: p = "language C"; break;
 992         case 3: p = "analog fallback"; break;
 993         case 4: p = "stereo"; break;
 994         case 5: p = "language AC"; break;
 995         case 6: p = "language BC"; break;
 996         case 7: p = "language AB"; break;
 997         default: p = "undefined";
 998         }
 999         cx25840_info("Preferred audio mode:      %s\n", p);
1000
1001         if ((audio_config & 0xf) == 0xf) {
1002                 switch ((afc0 >> 3) & 0x3) {
1003                 case 0: p = "system DK"; break;
1004                 case 1: p = "system L"; break;
1005                 case 2: p = "autodetect"; break;
1006                 default: p = "undefined";
1007                 }
1008                 cx25840_info("Selected 65 MHz format:    %s\n", p);
1009
1010                 switch (afc0 & 0x7) {
1011                 case 0: p = "chroma"; break;
1012                 case 1: p = "BTSC"; break;
1013                 case 2: p = "EIAJ"; break;
1014                 case 3: p = "A2-M"; break;
1015                 case 4: p = "autodetect"; break;
1016                 default: p = "undefined";
1017                 }
1018                 cx25840_info("Selected 45 MHz format:    %s\n", p);
1019         }
1020 }