drivers/media/video/cx25840/cx25840-core.c

   1 /* cx25840 - Conexant CX25840 audio/video decoder driver
   2  *
   3  * Copyright (C) 2004 Ulf Eklund
   4  *
   5  * Based on the saa7115 driver and on the first verison of Chris Kennedy's
   6  * cx25840 driver.
   7  *
   8  * Changes by Tyler Trafford <tatrafford@comcast.net>
   9  *    - cleanup/rewrite for V4L2 API (2005)
  10  *
  11  * VBI support by Hans Verkuil <hverkuil@xs4all.nl>.
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  26  */
  27
  28
  29 #include <linux/kernel.h>
  30 #include <linux/module.h>
  31 #include <linux/slab.h>
  32 #include <linux/videodev2.h>
  33 #include <linux/i2c.h>
  34 #include <media/v4l2-common.h>
  35 #include <media/cx25840.h>
  36
  37 #include "cx25840-core.h"
  38
  39 MODULE_DESCRIPTION("Conexant CX25840 audio/video decoder driver");
  40 MODULE_AUTHOR("Ulf Eklund, Chris Kennedy, Hans Verkuil, Tyler Trafford");
  41 MODULE_LICENSE("GPL");
  42
  43 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
  44
  45
  46 static int cx25840_debug;
  47
  48 module_param_named(debug,cx25840_debug, int, 0644);
  49
  50 MODULE_PARM_DESC(debug, "Debugging messages [0=Off (default) 1=On]");
  51
  52 I2C_CLIENT_INSMOD;
  53
  54 /* ----------------------------------------------------------------------- */
  55
  56 int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
  57 {
  58         u8 buffer[3];
  59         buffer[0] = addr >> 8;
  60         buffer[1] = addr & 0xff;
  61         buffer[2] = value;
  62         return i2c_master_send(client, buffer, 3);
  63 }
  64
  65 int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
  66 {
  67         u8 buffer[6];
  68         buffer[0] = addr >> 8;
  69         buffer[1] = addr & 0xff;
  70         buffer[2] = value >> 24;
  71         buffer[3] = (value >> 16) & 0xff;
  72         buffer[4] = (value >> 8) & 0xff;
  73         buffer[5] = value & 0xff;
  74         return i2c_master_send(client, buffer, 6);
  75 }
  76
  77 u8 cx25840_read(struct i2c_client * client, u16 addr)
  78 {
  79         u8 buffer[2];
  80         buffer[0] = addr >> 8;
  81         buffer[1] = addr & 0xff;
  82
  83         if (i2c_master_send(client, buffer, 2) < 2)
  84                 return 0;
  85
  86         if (i2c_master_recv(client, buffer, 1) < 1)
  87                 return 0;
  88
  89         return buffer[0];
  90 }
  91
  92 u32 cx25840_read4(struct i2c_client * client, u16 addr)
  93 {
  94         u8 buffer[4];
  95         buffer[0] = addr >> 8;
  96         buffer[1] = addr & 0xff;
  97
  98         if (i2c_master_send(client, buffer, 2) < 2)
  99                 return 0;
 100
 101         if (i2c_master_recv(client, buffer, 4) < 4)
 102                 return 0;
 103
 104         return (buffer[0] << 24) | (buffer[1] << 16) |
 105             (buffer[2] << 8) | buffer[3];
 106 }
 107
 108 int cx25840_and_or(struct i2c_client *client, u16 addr, 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 *client, enum cx25840_video_input vid_input,
 119                                                 enum cx25840_audio_input aud_input);
 120 static void log_status(struct i2c_client *client);
 121
 122 /* ----------------------------------------------------------------------- */
 123
 124 static 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 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_and_or(client, 0x401, ~0x18, 0);
 180         cx25840_and_or(client, 0x4a2, ~0x10, 0x10);
 181         /* steps 8c and 8d are done in change_input() */
 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 input */
 199         set_input(client, state->vid_input, state->aud_input);
 200
 201         /* start microcontroller */
 202         cx25840_and_or(client, 0x803, ~0x10, 0x10);
 203 }
 204
 205 /* ----------------------------------------------------------------------- */
 206
 207 static void input_change(struct i2c_client *client)
 208 {
 209         struct cx25840_state *state = i2c_get_clientdata(client);
 210         v4l2_std_id std = cx25840_get_v4lstd(client);
 211
 212         /* Follow step 8c and 8d of section 3.16 in the cx25840 datasheet */
 213         if (std & V4L2_STD_SECAM) {
 214                 cx25840_write(client, 0x402, 0);
 215         }
 216         else {
 217                 cx25840_write(client, 0x402, 0x04);
 218                 cx25840_write(client, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
 219         }
 220         cx25840_and_or(client, 0x401, ~0x60, 0);
 221         cx25840_and_or(client, 0x401, ~0x60, 0x60);
 222
 223         /* Note: perhaps V4L2_STD_PAL_M should be handled as V4L2_STD_NTSC
 224            instead of V4L2_STD_PAL. Someone needs to test this. */
 225         if (std & V4L2_STD_PAL) {
 226                 /* Follow tuner change procedure for PAL */
 227                 cx25840_write(client, 0x808, 0xff);
 228                 cx25840_write(client, 0x80b, 0x10);
 229         } else if (std & V4L2_STD_SECAM) {
 230                 /* Select autodetect for SECAM */
 231                 cx25840_write(client, 0x808, 0xff);
 232                 cx25840_write(client, 0x80b, 0x10);
 233         } else if (std & V4L2_STD_NTSC) {
 234                 /* Certain Hauppauge PVR150 models have a hardware bug
 235                    that causes audio to drop out. For these models the
 236                    audio standard must be set explicitly.
 237                    To be precise: it affects cards with tuner models
 238                    85, 99 and 112 (model numbers from tveeprom). */
 239                 int hw_fix = state->pvr150_workaround;
 240
 241                 if (std == V4L2_STD_NTSC_M_JP) {
 242                         /* Japan uses EIAJ audio standard */
 243                         cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
 244                 } else if (std == V4L2_STD_NTSC_M_KR) {
 245                         /* South Korea uses A2 audio standard */
 246                         cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
 247                 } else {
 248                         /* Others use the BTSC audio standard */
 249                         cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
 250                 }
 251                 cx25840_write(client, 0x80b, 0x00);
 252         }
 253
 254         if (cx25840_read(client, 0x803) & 0x10) {
 255                 /* restart audio decoder microcontroller */
 256                 cx25840_and_or(client, 0x803, ~0x10, 0x00);
 257                 cx25840_and_or(client, 0x803, ~0x10, 0x10);
 258         }
 259 }
 260
 261 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 262                                                 enum cx25840_audio_input aud_input)
 263 {
 264         struct cx25840_state *state = i2c_get_clientdata(client);
 265         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
 266                            vid_input <= CX25840_COMPOSITE8);
 267         u8 reg;
 268
 269         v4l_dbg(1, cx25840_debug, client, "decoder set video input %d, audio input %d\n",
 270                         vid_input, aud_input);
 271
 272         if (is_composite) {
 273                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
 274         } else {
 275                 int luma = vid_input & 0xf0;
 276                 int chroma = vid_input & 0xf00;
 277
 278                 if ((vid_input & ~0xff0) ||
 279                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
 280                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
 281                         v4l_err(client, "0x%04x is not a valid video input!\n", vid_input);
 282                         return -EINVAL;
 283                 }
 284                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
 285                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
 286                         reg &= 0x3f;
 287                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
 288                 } else {
 289                         reg &= 0xcf;
 290                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
 291                 }
 292         }
 293
 294         switch (aud_input) {
 295         case CX25840_AUDIO_SERIAL:
 296                 /* do nothing, use serial audio input */
 297                 break;
 298         case CX25840_AUDIO4: reg &= ~0x30; break;
 299         case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
 300         case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
 301         case CX25840_AUDIO7: reg &= ~0xc0; break;
 302         case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
 303
 304         default:
 305                 v4l_err(client, "0x%04x is not a valid audio input!\n", aud_input);
 306                 return -EINVAL;
 307         }
 308
 309         cx25840_write(client, 0x103, reg);
 310         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
 311         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
 312         /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
 313         cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
 314         /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
 315         if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
 316                 cx25840_and_or(client, 0x102, ~0x4, 4);
 317         else
 318                 cx25840_and_or(client, 0x102, ~0x4, 0);
 319
 320         state->vid_input = vid_input;
 321         state->aud_input = aud_input;
 322         cx25840_audio_set_path(client);
 323         input_change(client);
 324         return 0;
 325 }
 326
 327 /* ----------------------------------------------------------------------- */
 328
 329 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
 330 {
 331         u8 fmt=0;       /* zero is autodetect */
 332
 333         /* First tests should be against specific std */
 334         if (std == V4L2_STD_NTSC_M_JP) {
 335                 fmt=0x2;
 336         } else if (std == V4L2_STD_NTSC_443) {
 337                 fmt=0x3;
 338         } else if (std == V4L2_STD_PAL_M) {
 339                 fmt=0x5;
 340         } else if (std == V4L2_STD_PAL_N) {
 341                 fmt=0x6;
 342         } else if (std == V4L2_STD_PAL_Nc) {
 343                 fmt=0x7;
 344         } else if (std == V4L2_STD_PAL_60) {
 345                 fmt=0x8;
 346         } else {
 347                 /* Then, test against generic ones */
 348                 if (std & V4L2_STD_NTSC) {
 349                         fmt=0x1;
 350                 } else if (std & V4L2_STD_PAL) {
 351                         fmt=0x4;
 352                 } else if (std & V4L2_STD_SECAM) {
 353                         fmt=0xc;
 354                 }
 355         }
 356
 357         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
 358            Without this PAL may display a vertical ghosting effect.
 359            This happens for example with the Yuan MPC622. */
 360         if (fmt >= 4 && fmt < 8) {
 361                 /* Set format to NTSC-M */
 362                 cx25840_and_or(client, 0x400, ~0xf, 1);
 363                 /* Turn off LCOMB */
 364                 cx25840_and_or(client, 0x47b, ~6, 0);
 365         }
 366         cx25840_and_or(client, 0x400, ~0xf, fmt);
 367         cx25840_vbi_setup(client);
 368         return 0;
 369 }
 370
 371 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
 372 {
 373         /* check VID_FMT_SEL first */
 374         u8 fmt = cx25840_read(client, 0x400) & 0xf;
 375
 376         if (!fmt) {
 377                 /* check AFD_FMT_STAT if set to autodetect */
 378                 fmt = cx25840_read(client, 0x40d) & 0xf;
 379         }
 380
 381         switch (fmt) {
 382         case 0x1:
 383         {
 384                 /* if the audio std is A2-M, then this is the South Korean
 385                    NTSC standard */
 386                 if (cx25840_read(client, 0x805) == 2)
 387                         return V4L2_STD_NTSC_M_KR;
 388                 return V4L2_STD_NTSC_M;
 389         }
 390         case 0x2: return V4L2_STD_NTSC_M_JP;
 391         case 0x3: return V4L2_STD_NTSC_443;
 392         case 0x4: return V4L2_STD_PAL;
 393         case 0x5: return V4L2_STD_PAL_M;
 394         case 0x6: return V4L2_STD_PAL_N;
 395         case 0x7: return V4L2_STD_PAL_Nc;
 396         case 0x8: return V4L2_STD_PAL_60;
 397         case 0xc: return V4L2_STD_SECAM;
 398         default: return V4L2_STD_UNKNOWN;
 399         }
 400 }
 401
 402 /* ----------------------------------------------------------------------- */
 403
 404 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 405 {
 406         struct cx25840_state *state = i2c_get_clientdata(client);
 407
 408         switch (ctrl->id) {
 409         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 410                 state->pvr150_workaround = ctrl->value;
 411                 set_input(client, state->vid_input, state->aud_input);
 412                 break;
 413
 414         case V4L2_CID_BRIGHTNESS:
 415                 if (ctrl->value < 0 || ctrl->value > 255) {
 416                         v4l_err(client, "invalid brightness setting %d\n",
 417                                     ctrl->value);
 418                         return -ERANGE;
 419                 }
 420
 421                 cx25840_write(client, 0x414, ctrl->value - 128);
 422                 break;
 423
 424         case V4L2_CID_CONTRAST:
 425                 if (ctrl->value < 0 || ctrl->value > 127) {
 426                         v4l_err(client, "invalid contrast setting %d\n",
 427                                     ctrl->value);
 428                         return -ERANGE;
 429                 }
 430
 431                 cx25840_write(client, 0x415, ctrl->value << 1);
 432                 break;
 433
 434         case V4L2_CID_SATURATION:
 435                 if (ctrl->value < 0 || ctrl->value > 127) {
 436                         v4l_err(client, "invalid saturation setting %d\n",
 437                                     ctrl->value);
 438                         return -ERANGE;
 439                 }
 440
 441                 cx25840_write(client, 0x420, ctrl->value << 1);
 442                 cx25840_write(client, 0x421, ctrl->value << 1);
 443                 break;
 444
 445         case V4L2_CID_HUE:
 446                 if (ctrl->value < -127 || ctrl->value > 127) {
 447                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
 448                         return -ERANGE;
 449                 }
 450
 451                 cx25840_write(client, 0x422, ctrl->value);
 452                 break;
 453
 454         case V4L2_CID_AUDIO_VOLUME:
 455         case V4L2_CID_AUDIO_BASS:
 456         case V4L2_CID_AUDIO_TREBLE:
 457         case V4L2_CID_AUDIO_BALANCE:
 458         case V4L2_CID_AUDIO_MUTE:
 459                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 460
 461         default:
 462                 return -EINVAL;
 463         }
 464
 465         return 0;
 466 }
 467
 468 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 469 {
 470         struct cx25840_state *state = i2c_get_clientdata(client);
 471
 472         switch (ctrl->id) {
 473         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 474                 ctrl->value = state->pvr150_workaround;
 475                 break;
 476         case V4L2_CID_BRIGHTNESS:
 477                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
 478                 break;
 479         case V4L2_CID_CONTRAST:
 480                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 481                 break;
 482         case V4L2_CID_SATURATION:
 483                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 484                 break;
 485         case V4L2_CID_HUE:
 486                 ctrl->value = (s8)cx25840_read(client, 0x422);
 487                 break;
 488         case V4L2_CID_AUDIO_VOLUME:
 489         case V4L2_CID_AUDIO_BASS:
 490         case V4L2_CID_AUDIO_TREBLE:
 491         case V4L2_CID_AUDIO_BALANCE:
 492         case V4L2_CID_AUDIO_MUTE:
 493                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 494         default:
 495                 return -EINVAL;
 496         }
 497
 498         return 0;
 499 }
 500
 501 /* ----------------------------------------------------------------------- */
 502
 503 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 504 {
 505         switch (fmt->type) {
 506         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 507                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 508         default:
 509                 return -EINVAL;
 510         }
 511
 512         return 0;
 513 }
 514
 515 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 516 {
 517         struct v4l2_pix_format *pix;
 518         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 519         int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);
 520
 521         switch (fmt->type) {
 522         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 523                 pix = &(fmt->fmt.pix);
 524
 525                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 526                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 527
 528                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 529                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 530
 531                 Vlines = pix->height + (is_pal ? 4 : 7);
 532
 533                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 534                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 535                         v4l_err(client, "%dx%d is not a valid size!\n",
 536                                     pix->width, pix->height);
 537                         return -ERANGE;
 538                 }
 539
 540                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 541                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 542                 VSC &= 0x1fff;
 543
 544                 if (pix->width >= 385)
 545                         filter = 0;
 546                 else if (pix->width > 192)
 547                         filter = 1;
 548                 else if (pix->width > 96)
 549                         filter = 2;
 550                 else
 551                         filter = 3;
 552
 553                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
 554                             pix->width, pix->height, HSC, VSC);
 555
 556                 /* HSCALE=HSC */
 557                 cx25840_write(client, 0x418, HSC & 0xff);
 558                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 559                 cx25840_write(client, 0x41a, HSC >> 16);
 560                 /* VSCALE=VSC */
 561                 cx25840_write(client, 0x41c, VSC & 0xff);
 562                 cx25840_write(client, 0x41d, VSC >> 8);
 563                 /* VS_INTRLACE=1 VFILT=filter */
 564                 cx25840_write(client, 0x41e, 0x8 | filter);
 565                 break;
 566
 567         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 568                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 569
 570         case V4L2_BUF_TYPE_VBI_CAPTURE:
 571                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 572
 573         default:
 574                 return -EINVAL;
 575         }
 576
 577         return 0;
 578 }
 579
 580 /* ----------------------------------------------------------------------- */
 581
 582 static struct v4l2_queryctrl cx25840_qctrl[] = {
 583         {
 584                 .id            = V4L2_CID_BRIGHTNESS,
 585                 .type          = V4L2_CTRL_TYPE_INTEGER,
 586                 .name          = "Brightness",
 587                 .minimum       = 0,
 588                 .maximum       = 255,
 589                 .step          = 1,
 590                 .default_value = 128,
 591                 .flags         = 0,
 592         }, {
 593                 .id            = V4L2_CID_CONTRAST,
 594                 .type          = V4L2_CTRL_TYPE_INTEGER,
 595                 .name          = "Contrast",
 596                 .minimum       = 0,
 597                 .maximum       = 127,
 598                 .step          = 1,
 599                 .default_value = 64,
 600                 .flags         = 0,
 601         }, {
 602                 .id            = V4L2_CID_SATURATION,
 603                 .type          = V4L2_CTRL_TYPE_INTEGER,
 604                 .name          = "Saturation",
 605                 .minimum       = 0,
 606                 .maximum       = 127,
 607                 .step          = 1,
 608                 .default_value = 64,
 609                 .flags         = 0,
 610         }, {
 611                 .id            = V4L2_CID_HUE,
 612                 .type          = V4L2_CTRL_TYPE_INTEGER,
 613                 .name          = "Hue",
 614                 .minimum       = -128,
 615                 .maximum       = 127,
 616                 .step          = 1,
 617                 .default_value = 0,
 618                 .flags         = 0,
 619         }, {
 620                 .id            = V4L2_CID_AUDIO_VOLUME,
 621                 .type          = V4L2_CTRL_TYPE_INTEGER,
 622                 .name          = "Volume",
 623                 .minimum       = 0,
 624                 .maximum       = 65535,
 625                 .step          = 65535/100,
 626                 .default_value = 58880,
 627                 .flags         = 0,
 628         }, {
 629                 .id            = V4L2_CID_AUDIO_BALANCE,
 630                 .type          = V4L2_CTRL_TYPE_INTEGER,
 631                 .name          = "Balance",
 632                 .minimum       = 0,
 633                 .maximum       = 65535,
 634                 .step          = 65535/100,
 635                 .default_value = 32768,
 636                 .flags         = 0,
 637         }, {
 638                 .id            = V4L2_CID_AUDIO_MUTE,
 639                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 640                 .name          = "Mute",
 641                 .minimum       = 0,
 642                 .maximum       = 1,
 643                 .step          = 1,
 644                 .default_value = 1,
 645                 .flags         = 0,
 646         }, {
 647                 .id            = V4L2_CID_AUDIO_BASS,
 648                 .type          = V4L2_CTRL_TYPE_INTEGER,
 649                 .name          = "Bass",
 650                 .minimum       = 0,
 651                 .maximum       = 65535,
 652                 .step          = 65535/100,
 653                 .default_value = 32768,
 654         }, {
 655                 .id            = V4L2_CID_AUDIO_TREBLE,
 656                 .type          = V4L2_CTRL_TYPE_INTEGER,
 657                 .name          = "Treble",
 658                 .minimum       = 0,
 659                 .maximum       = 65535,
 660                 .step          = 65535/100,
 661                 .default_value = 32768,
 662         },
 663 };
 664
 665 /* ----------------------------------------------------------------------- */
 666
 667 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 668                            void *arg)
 669 {
 670         struct cx25840_state *state = i2c_get_clientdata(client);
 671         struct v4l2_tuner *vt = arg;
 672         struct v4l2_routing *route = arg;
 673
 674         switch (cmd) {
 675 #ifdef CONFIG_VIDEO_ADV_DEBUG
 676         /* ioctls to allow direct access to the
 677          * cx25840 registers for testing */
 678         case VIDIOC_INT_G_REGISTER:
 679         {
 680                 struct v4l2_register *reg = arg;
 681
 682                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 683                         return -EINVAL;
 684                 reg->val = cx25840_read(client, reg->reg & 0x0fff);
 685                 break;
 686         }
 687
 688         case VIDIOC_INT_S_REGISTER:
 689         {
 690                 struct v4l2_register *reg = arg;
 691
 692                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 693                         return -EINVAL;
 694                 if (!capable(CAP_SYS_ADMIN))
 695                         return -EPERM;
 696                 cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 697                 break;
 698         }
 699 #endif
 700
 701         case VIDIOC_INT_DECODE_VBI_LINE:
 702                 return cx25840_vbi(client, cmd, arg);
 703
 704         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 705                 return cx25840_audio(client, cmd, arg);
 706
 707         case VIDIOC_STREAMON:
 708                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
 709                 cx25840_write(client, 0x115, 0x8c);
 710                 cx25840_write(client, 0x116, 0x07);
 711                 break;
 712
 713         case VIDIOC_STREAMOFF:
 714                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
 715                 cx25840_write(client, 0x115, 0x00);
 716                 cx25840_write(client, 0x116, 0x00);
 717                 break;
 718
 719         case VIDIOC_LOG_STATUS:
 720                 log_status(client);
 721                 break;
 722
 723         case VIDIOC_G_CTRL:
 724                 return get_v4lctrl(client, (struct v4l2_control *)arg);
 725
 726         case VIDIOC_S_CTRL:
 727                 return set_v4lctrl(client, (struct v4l2_control *)arg);
 728
 729         case VIDIOC_QUERYCTRL:
 730         {
 731                 struct v4l2_queryctrl *qc = arg;
 732                 int i;
 733
 734                 for (i = 0; i < ARRAY_SIZE(cx25840_qctrl); i++)
 735                         if (qc->id && qc->id == cx25840_qctrl[i].id) {
 736                                 memcpy(qc, &cx25840_qctrl[i], sizeof(*qc));
 737                                 return 0;
 738                         }
 739                 return -EINVAL;
 740         }
 741
 742         case VIDIOC_G_STD:
 743                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
 744                 break;
 745
 746         case VIDIOC_S_STD:
 747                 state->radio = 0;
 748                 return set_v4lstd(client, *(v4l2_std_id *)arg);
 749
 750         case AUDC_SET_RADIO:
 751                 state->radio = 1;
 752                 break;
 753
 754         case VIDIOC_INT_G_VIDEO_ROUTING:
 755                 route->input = state->vid_input;
 756                 route->output = 0;
 757                 break;
 758
 759         case VIDIOC_INT_S_VIDEO_ROUTING:
 760                 return set_input(client, route->input, state->aud_input);
 761
 762         case VIDIOC_INT_G_AUDIO_ROUTING:
 763                 route->input = state->aud_input;
 764                 route->output = 0;
 765                 break;
 766
 767         case VIDIOC_INT_S_AUDIO_ROUTING:
 768                 return set_input(client, state->vid_input, route->input);
 769
 770         case VIDIOC_S_FREQUENCY:
 771                 input_change(client);
 772                 break;
 773
 774         case VIDIOC_G_TUNER:
 775         {
 776                 u8 mode = cx25840_read(client, 0x804);
 777                 u8 vpres = cx25840_read(client, 0x80a) & 0x10;
 778                 int val = 0;
 779
 780                 if (state->radio)
 781                         break;
 782
 783                 vt->capability |=
 784                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
 785                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
 786
 787                 vt->signal = vpres ? 0xffff : 0x0;
 788
 789                 /* get rxsubchans and audmode */
 790                 if ((mode & 0xf) == 1)
 791                         val |= V4L2_TUNER_SUB_STEREO;
 792                 else
 793                         val |= V4L2_TUNER_SUB_MONO;
 794
 795                 if (mode == 2 || mode == 4)
 796                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 797
 798                 if (mode & 0x10)
 799                         val |= V4L2_TUNER_SUB_SAP;
 800
 801                 vt->rxsubchans = val;
 802                 vt->audmode = state->audmode;
 803                 break;
 804         }
 805
 806         case VIDIOC_S_TUNER:
 807                 if (state->radio)
 808                         break;
 809
 810                 switch (vt->audmode) {
 811                 case V4L2_TUNER_MODE_MONO:
 812                         /* mono      -> mono
 813                            stereo    -> mono
 814                            bilingual -> lang1 */
 815                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
 816                         break;
 817                 case V4L2_TUNER_MODE_STEREO:
 818                 case V4L2_TUNER_MODE_LANG1:
 819                         /* mono      -> mono
 820                            stereo    -> stereo
 821                            bilingual -> lang1 */
 822                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
 823                         break;
 824                 case V4L2_TUNER_MODE_LANG1_LANG2:
 825                         /* mono      -> mono
 826                            stereo    -> stereo
 827                            bilingual -> lang1/lang2 */
 828                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
 829                         break;
 830                 case V4L2_TUNER_MODE_LANG2:
 831                         /* mono      -> mono
 832                            stereo    -> stereo
 833                            bilingual -> lang2 */
 834                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
 835                         break;
 836                 default:
 837                         return -EINVAL;
 838                 }
 839                 state->audmode = vt->audmode;
 840                 break;
 841
 842         case VIDIOC_G_FMT:
 843                 return get_v4lfmt(client, (struct v4l2_format *)arg);
 844
 845         case VIDIOC_S_FMT:
 846                 return set_v4lfmt(client, (struct v4l2_format *)arg);
 847
 848         case VIDIOC_INT_RESET:
 849                 cx25840_initialize(client, 0);
 850                 break;
 851
 852         case VIDIOC_INT_G_CHIP_IDENT:
 853                 *(enum v4l2_chip_ident *)arg =
 854                         V4L2_IDENT_CX25840 + ((cx25840_read(client, 0x100) >> 4) & 0xf);
 855                 break;
 856
 857         default:
 858                 return -EINVAL;
 859         }
 860
 861         return 0;
 862 }
 863
 864 /* ----------------------------------------------------------------------- */
 865
 866 static struct i2c_driver i2c_driver_cx25840;
 867
 868 static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
 869                                  int kind)
 870 {
 871         struct i2c_client *client;
 872         struct cx25840_state *state;
 873         u16 device_id;
 874
 875         /* Check if the adapter supports the needed features
 876          * Not until kernel version 2.6.11 did the bit-algo
 877          * correctly report that it would do an I2C-level xfer */
 878         if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
 879                 return 0;
 880
 881         client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 882         if (client == 0)
 883                 return -ENOMEM;
 884
 885         client->addr = address;
 886         client->adapter = adapter;
 887         client->driver = &i2c_driver_cx25840;
 888         snprintf(client->name, sizeof(client->name) - 1, "cx25840");
 889
 890         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", address << 1);
 891
 892         device_id = cx25840_read(client, 0x101) << 8;
 893         device_id |= cx25840_read(client, 0x100);
 894
 895         /* The high byte of the device ID should be
 896          * 0x84 if chip is present */
 897         if ((device_id & 0xff00) != 0x8400) {
 898                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
 899                 kfree(client);
 900                 return 0;
 901         }
 902
 903         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
 904                     (device_id & 0xfff0) >> 4,
 905                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : 3,
 906                     address << 1, adapter->name);
 907
 908         state = kmalloc(sizeof(struct cx25840_state), GFP_KERNEL);
 909         if (state == NULL) {
 910                 kfree(client);
 911                 return -ENOMEM;
 912         }
 913
 914         i2c_set_clientdata(client, state);
 915         memset(state, 0, sizeof(struct cx25840_state));
 916         state->vid_input = CX25840_COMPOSITE7;
 917         state->aud_input = CX25840_AUDIO8;
 918         state->audclk_freq = 48000;
 919         state->pvr150_workaround = 0;
 920         state->audmode = V4L2_TUNER_MODE_LANG1;
 921
 922         cx25840_initialize(client, 1);
 923
 924         i2c_attach_client(client);
 925
 926         return 0;
 927 }
 928
 929 static int cx25840_attach_adapter(struct i2c_adapter *adapter)
 930 {
 931         if (adapter->class & I2C_CLASS_TV_ANALOG)
 932                 return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
 933         return 0;
 934 }
 935
 936 static int cx25840_detach_client(struct i2c_client *client)
 937 {
 938         struct cx25840_state *state = i2c_get_clientdata(client);
 939         int err;
 940
 941         err = i2c_detach_client(client);
 942         if (err) {
 943                 return err;
 944         }
 945
 946         kfree(state);
 947         kfree(client);
 948
 949         return 0;
 950 }
 951
 952 /* ----------------------------------------------------------------------- */
 953
 954 static struct i2c_driver i2c_driver_cx25840 = {
 955         .driver = {
 956                 .name = "cx25840",
 957         },
 958         .id = I2C_DRIVERID_CX25840,
 959         .attach_adapter = cx25840_attach_adapter,
 960         .detach_client = cx25840_detach_client,
 961         .command = cx25840_command,
 962 };
 963
 964
 965 static int __init m__init(void)
 966 {
 967         return i2c_add_driver(&i2c_driver_cx25840);
 968 }
 969
 970 static void __exit m__exit(void)
 971 {
 972         i2c_del_driver(&i2c_driver_cx25840);
 973 }
 974
 975 module_init(m__init);
 976 module_exit(m__exit);
 977
 978 /* ----------------------------------------------------------------------- */
 979
 980 static void log_status(struct i2c_client *client)
 981 {
 982         static const char *const fmt_strs[] = {
 983                 "0x0",
 984                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 985                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 986                 "0x9", "0xA", "0xB",
 987                 "SECAM",
 988                 "0xD", "0xE", "0xF"
 989         };
 990
 991         struct cx25840_state *state = i2c_get_clientdata(client);
 992         u8 microctrl_vidfmt = cx25840_read(client, 0x80a);
 993         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
 994         u8 gen_stat1 = cx25840_read(client, 0x40d);
 995         u8 download_ctl = cx25840_read(client, 0x803);
 996         u8 mod_det_stat0 = cx25840_read(client, 0x804);
 997         u8 mod_det_stat1 = cx25840_read(client, 0x805);
 998         u8 audio_config = cx25840_read(client, 0x808);
 999         u8 pref_mode = cx25840_read(client, 0x809);
1000         u8 afc0 = cx25840_read(client, 0x80b);
1001         u8 mute_ctl = cx25840_read(client, 0x8d3);
1002         int vid_input = state->vid_input;
1003         int aud_input = state->aud_input;
1004         char *p;
1005
1006         v4l_info(client, "Video signal:              %spresent\n",
1007                     (microctrl_vidfmt & 0x10) ? "" : "not ");
1008         v4l_info(client, "Detected format:           %s\n",
1009                     fmt_strs[gen_stat1 & 0xf]);
1010
1011         switch (mod_det_stat0) {
1012         case 0x00: p = "mono"; break;
1013         case 0x01: p = "stereo"; break;
1014         case 0x02: p = "dual"; break;
1015         case 0x04: p = "tri"; break;
1016         case 0x10: p = "mono with SAP"; break;
1017         case 0x11: p = "stereo with SAP"; break;
1018         case 0x12: p = "dual with SAP"; break;
1019         case 0x14: p = "tri with SAP"; break;
1020         case 0xfe: p = "forced mode"; break;
1021         default: p = "not defined";
1022         }
1023         v4l_info(client, "Detected audio mode:       %s\n", p);
1024
1025         switch (mod_det_stat1) {
1026         case 0x00: p = "not defined"; break;
1027         case 0x01: p = "EIAJ"; break;
1028         case 0x02: p = "A2-M"; break;
1029         case 0x03: p = "A2-BG"; break;
1030         case 0x04: p = "A2-DK1"; break;
1031         case 0x05: p = "A2-DK2"; break;
1032         case 0x06: p = "A2-DK3"; break;
1033         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
1034         case 0x08: p = "AM-L"; break;
1035         case 0x09: p = "NICAM-BG"; break;
1036         case 0x0a: p = "NICAM-DK"; break;
1037         case 0x0b: p = "NICAM-I"; break;
1038         case 0x0c: p = "NICAM-L"; break;
1039         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
1040         case 0x0e: p = "IF FM Radio"; break;
1041         case 0x0f: p = "BTSC"; break;
1042         case 0x10: p = "high-deviation FM"; break;
1043         case 0x11: p = "very high-deviation FM"; break;
1044         case 0xfd: p = "unknown audio standard"; break;
1045         case 0xfe: p = "forced audio standard"; break;
1046         case 0xff: p = "no detected audio standard"; break;
1047         default: p = "not defined";
1048         }
1049         v4l_info(client, "Detected audio standard:   %s\n", p);
1050         v4l_info(client, "Audio muted:               %s\n",
1051                     (mute_ctl & 0x2) ? "yes" : "no");
1052         v4l_info(client, "Audio microcontroller:     %s\n",
1053                     (download_ctl & 0x10) ? "running" : "stopped");
1054
1055         switch (audio_config >> 4) {
1056         case 0x00: p = "undefined"; break;
1057         case 0x01: p = "BTSC"; break;
1058         case 0x02: p = "EIAJ"; break;
1059         case 0x03: p = "A2-M"; break;
1060         case 0x04: p = "A2-BG"; break;
1061         case 0x05: p = "A2-DK1"; break;
1062         case 0x06: p = "A2-DK2"; break;
1063         case 0x07: p = "A2-DK3"; break;
1064         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
1065         case 0x09: p = "AM-L"; break;
1066         case 0x0a: p = "NICAM-BG"; break;
1067         case 0x0b: p = "NICAM-DK"; break;
1068         case 0x0c: p = "NICAM-I"; break;
1069         case 0x0d: p = "NICAM-L"; break;
1070         case 0x0e: p = "FM radio"; break;
1071         case 0x0f: p = "automatic detection"; break;
1072         default: p = "undefined";
1073         }
1074         v4l_info(client, "Configured audio standard: %s\n", p);
1075
1076         if ((audio_config >> 4) < 0xF) {
1077                 switch (audio_config & 0xF) {
1078                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
1079                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
1080                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
1081                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
1082                 case 0x04: p = "STEREO"; break;
1083                 case 0x05: p = "DUAL1 (AB)"; break;
1084                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
1085                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
1086                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
1087                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
1088                 case 0x0a: p = "SAP"; break;
1089                 default: p = "undefined";
1090                 }
1091                 v4l_info(client, "Configured audio mode:     %s\n", p);
1092         } else {
1093                 switch (audio_config & 0xF) {
1094                 case 0x00: p = "BG"; break;
1095                 case 0x01: p = "DK1"; break;
1096                 case 0x02: p = "DK2"; break;
1097                 case 0x03: p = "DK3"; break;
1098                 case 0x04: p = "I"; break;
1099                 case 0x05: p = "L"; break;
1100                 case 0x06: p = "BTSC"; break;
1101                 case 0x07: p = "EIAJ"; break;
1102                 case 0x08: p = "A2-M"; break;
1103                 case 0x09: p = "FM Radio"; break;
1104                 case 0x0f: p = "automatic standard and mode detection"; break;
1105                 default: p = "undefined";
1106                 }
1107                 v4l_info(client, "Configured audio system:   %s\n", p);
1108         }
1109
1110         v4l_info(client, "Specified standard:        %s\n",
1111                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
1112
1113         if (vid_input >= CX25840_COMPOSITE1 &&
1114             vid_input <= CX25840_COMPOSITE8) {
1115                 v4l_info(client, "Specified video input:     Composite %d\n",
1116                         vid_input - CX25840_COMPOSITE1 + 1);
1117         } else {
1118                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
1119                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
1120         }
1121         if (aud_input) {
1122                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
1123         } else {
1124                 v4l_info(client, "Specified audio input:     External\n");
1125         }
1126
1127         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
1128
1129         switch (pref_mode & 0xf) {
1130         case 0: p = "mono/language A"; break;
1131         case 1: p = "language B"; break;
1132         case 2: p = "language C"; break;
1133         case 3: p = "analog fallback"; break;
1134         case 4: p = "stereo"; break;
1135         case 5: p = "language AC"; break;
1136         case 6: p = "language BC"; break;
1137         case 7: p = "language AB"; break;
1138         default: p = "undefined";
1139         }
1140         v4l_info(client, "Preferred audio mode:      %s\n", p);
1141
1142         if ((audio_config & 0xf) == 0xf) {
1143                 switch ((afc0 >> 3) & 0x3) {
1144                 case 0: p = "system DK"; break;
1145                 case 1: p = "system L"; break;
1146                 case 2: p = "autodetect"; break;
1147                 default: p = "undefined";
1148                 }
1149                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
1150
1151                 switch (afc0 & 0x7) {
1152                 case 0: p = "chroma"; break;
1153                 case 1: p = "BTSC"; break;
1154                 case 2: p = "EIAJ"; break;
1155                 case 3: p = "A2-M"; break;
1156                 case 4: p = "autodetect"; break;
1157                 default: p = "undefined";
1158                 }
1159                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
1160         }
1161 }