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   1 /* cx25840 - Conexant CX25840 audio/video decoder driver
   2  *
   3  * Copyright (C) 2004 Ulf Eklund
   4  *
   5  * Based on the saa7115 driver and on the first verison of Chris Kennedy's
   6  * cx25840 driver.
   7  *
   8  * Changes by Tyler Trafford <tatrafford@comcast.net>
   9  *    - cleanup/rewrite for V4L2 API (2005)
  10  *
  11  * VBI support by Hans Verkuil <hverkuil@xs4all.nl>.
  12  *
  13  * NTSC sliced VBI support by Christopher Neufeld <television@cneufeld.ca>
  14  * with additional fixes by Hans Verkuil <hverkuil@xs4all.nl>.
  15  *
  16  * This program is free software; you can redistribute it and/or
  17  * modify it under the terms of the GNU General Public License
  18  * as published by the Free Software Foundation; either version 2
  19  * of the License, or (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  29  */
  30
  31
  32 #include <linux/kernel.h>
  33 #include <linux/module.h>
  34 #include <linux/slab.h>
  35 #include <linux/videodev2.h>
  36 #include <linux/i2c.h>
  37 #include <linux/delay.h>
  38 #include <media/v4l2-common.h>
  39 #include <media/v4l2-chip-ident.h>
  40 #include <media/v4l2-i2c-drv-legacy.h>
  41 #include <media/cx25840.h>
  42
  43 #include "cx25840-core.h"
  44
  45 MODULE_DESCRIPTION("Conexant CX25840 audio/video decoder driver");
  46 MODULE_AUTHOR("Ulf Eklund, Chris Kennedy, Hans Verkuil, Tyler Trafford");
  47 MODULE_LICENSE("GPL");
  48
  49 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
  50
  51
  52 int cx25840_debug;
  53
  54 module_param_named(debug,cx25840_debug, int, 0644);
  55
  56 MODULE_PARM_DESC(debug, "Debugging messages [0=Off (default) 1=On]");
  57
  58 I2C_CLIENT_INSMOD;
  59
  60 /* ----------------------------------------------------------------------- */
  61
  62 int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
  63 {
  64         u8 buffer[3];
  65         buffer[0] = addr >> 8;
  66         buffer[1] = addr & 0xff;
  67         buffer[2] = value;
  68         return i2c_master_send(client, buffer, 3);
  69 }
  70
  71 int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
  72 {
  73         u8 buffer[6];
  74         buffer[0] = addr >> 8;
  75         buffer[1] = addr & 0xff;
  76         buffer[2] = value & 0xff;
  77         buffer[3] = (value >> 8) & 0xff;
  78         buffer[4] = (value >> 16) & 0xff;
  79         buffer[5] = value >> 24;
  80         return i2c_master_send(client, buffer, 6);
  81 }
  82
  83 u8 cx25840_read(struct i2c_client * client, u16 addr)
  84 {
  85         u8 buffer[2];
  86         buffer[0] = addr >> 8;
  87         buffer[1] = addr & 0xff;
  88
  89         if (i2c_master_send(client, buffer, 2) < 2)
  90                 return 0;
  91
  92         if (i2c_master_recv(client, buffer, 1) < 1)
  93                 return 0;
  94
  95         return buffer[0];
  96 }
  97
  98 u32 cx25840_read4(struct i2c_client * client, u16 addr)
  99 {
 100         u8 buffer[4];
 101         buffer[0] = addr >> 8;
 102         buffer[1] = addr & 0xff;
 103
 104         if (i2c_master_send(client, buffer, 2) < 2)
 105                 return 0;
 106
 107         if (i2c_master_recv(client, buffer, 4) < 4)
 108                 return 0;
 109
 110         return (buffer[3] << 24) | (buffer[2] << 16) |
 111             (buffer[1] << 8) | buffer[0];
 112 }
 113
 114 int cx25840_and_or(struct i2c_client *client, u16 addr, unsigned and_mask,
 115                    u8 or_value)
 116 {
 117         return cx25840_write(client, addr,
 118                              (cx25840_read(client, addr) & and_mask) |
 119                              or_value);
 120 }
 121
 122 /* ----------------------------------------------------------------------- */
 123
 124 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 125                                                 enum cx25840_audio_input aud_input);
 126
 127 /* ----------------------------------------------------------------------- */
 128
 129 static void init_dll1(struct i2c_client *client)
 130 {
 131         /* This is the Hauppauge sequence used to
 132          * initialize the Delay Lock Loop 1 (ADC DLL). */
 133         cx25840_write(client, 0x159, 0x23);
 134         cx25840_write(client, 0x15a, 0x87);
 135         cx25840_write(client, 0x15b, 0x06);
 136         udelay(10);
 137         cx25840_write(client, 0x159, 0xe1);
 138         udelay(10);
 139         cx25840_write(client, 0x15a, 0x86);
 140         cx25840_write(client, 0x159, 0xe0);
 141         cx25840_write(client, 0x159, 0xe1);
 142         cx25840_write(client, 0x15b, 0x10);
 143 }
 144
 145 static void init_dll2(struct i2c_client *client)
 146 {
 147         /* This is the Hauppauge sequence used to
 148          * initialize the Delay Lock Loop 2 (ADC DLL). */
 149         cx25840_write(client, 0x15d, 0xe3);
 150         cx25840_write(client, 0x15e, 0x86);
 151         cx25840_write(client, 0x15f, 0x06);
 152         udelay(10);
 153         cx25840_write(client, 0x15d, 0xe1);
 154         cx25840_write(client, 0x15d, 0xe0);
 155         cx25840_write(client, 0x15d, 0xe1);
 156 }
 157
 158 static void cx25836_initialize(struct i2c_client *client)
 159 {
 160         /* reset configuration is described on page 3-77 of the CX25836 datasheet */
 161         /* 2. */
 162         cx25840_and_or(client, 0x000, ~0x01, 0x01);
 163         cx25840_and_or(client, 0x000, ~0x01, 0x00);
 164         /* 3a. */
 165         cx25840_and_or(client, 0x15a, ~0x70, 0x00);
 166         /* 3b. */
 167         cx25840_and_or(client, 0x15b, ~0x1e, 0x06);
 168         /* 3c. */
 169         cx25840_and_or(client, 0x159, ~0x02, 0x02);
 170         /* 3d. */
 171         udelay(10);
 172         /* 3e. */
 173         cx25840_and_or(client, 0x159, ~0x02, 0x00);
 174         /* 3f. */
 175         cx25840_and_or(client, 0x159, ~0xc0, 0xc0);
 176         /* 3g. */
 177         cx25840_and_or(client, 0x159, ~0x01, 0x00);
 178         cx25840_and_or(client, 0x159, ~0x01, 0x01);
 179         /* 3h. */
 180         cx25840_and_or(client, 0x15b, ~0x1e, 0x10);
 181 }
 182
 183 static void cx25840_work_handler(struct work_struct *work)
 184 {
 185         struct cx25840_state *state = container_of(work, struct cx25840_state, fw_work);
 186         cx25840_loadfw(state->c);
 187         wake_up(&state->fw_wait);
 188 }
 189
 190 static void cx25840_initialize(struct i2c_client *client)
 191 {
 192         DEFINE_WAIT(wait);
 193         struct cx25840_state *state = i2c_get_clientdata(client);
 194         struct workqueue_struct *q;
 195
 196         /* datasheet startup in numbered steps, refer to page 3-77 */
 197         /* 2. */
 198         cx25840_and_or(client, 0x803, ~0x10, 0x00);
 199         /* The default of this register should be 4, but I get 0 instead.
 200          * Set this register to 4 manually. */
 201         cx25840_write(client, 0x000, 0x04);
 202         /* 3. */
 203         init_dll1(client);
 204         init_dll2(client);
 205         cx25840_write(client, 0x136, 0x0a);
 206         /* 4. */
 207         cx25840_write(client, 0x13c, 0x01);
 208         cx25840_write(client, 0x13c, 0x00);
 209         /* 5. */
 210         /* Do the firmware load in a work handler to prevent.
 211            Otherwise the kernel is blocked waiting for the
 212            bit-banging i2c interface to finish uploading the
 213            firmware. */
 214         INIT_WORK(&state->fw_work, cx25840_work_handler);
 215         init_waitqueue_head(&state->fw_wait);
 216         q = create_singlethread_workqueue("cx25840_fw");
 217         prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
 218         queue_work(q, &state->fw_work);
 219         schedule();
 220         finish_wait(&state->fw_wait, &wait);
 221         destroy_workqueue(q);
 222
 223         /* 6. */
 224         cx25840_write(client, 0x115, 0x8c);
 225         cx25840_write(client, 0x116, 0x07);
 226         cx25840_write(client, 0x118, 0x02);
 227         /* 7. */
 228         cx25840_write(client, 0x4a5, 0x80);
 229         cx25840_write(client, 0x4a5, 0x00);
 230         cx25840_write(client, 0x402, 0x00);
 231         /* 8. */
 232         cx25840_and_or(client, 0x401, ~0x18, 0);
 233         cx25840_and_or(client, 0x4a2, ~0x10, 0x10);
 234         /* steps 8c and 8d are done in change_input() */
 235         /* 10. */
 236         cx25840_write(client, 0x8d3, 0x1f);
 237         cx25840_write(client, 0x8e3, 0x03);
 238
 239         cx25840_vbi_setup(client);
 240
 241         /* trial and error says these are needed to get audio */
 242         cx25840_write(client, 0x914, 0xa0);
 243         cx25840_write(client, 0x918, 0xa0);
 244         cx25840_write(client, 0x919, 0x01);
 245
 246         /* stereo prefered */
 247         cx25840_write(client, 0x809, 0x04);
 248         /* AC97 shift */
 249         cx25840_write(client, 0x8cf, 0x0f);
 250
 251         /* (re)set input */
 252         set_input(client, state->vid_input, state->aud_input);
 253
 254         /* start microcontroller */
 255         cx25840_and_or(client, 0x803, ~0x10, 0x10);
 256 }
 257
 258 /* ----------------------------------------------------------------------- */
 259
 260 static void input_change(struct i2c_client *client)
 261 {
 262         struct cx25840_state *state = i2c_get_clientdata(client);
 263         v4l2_std_id std = cx25840_get_v4lstd(client);
 264
 265         /* Follow step 8c and 8d of section 3.16 in the cx25840 datasheet */
 266         if (std & V4L2_STD_SECAM) {
 267                 cx25840_write(client, 0x402, 0);
 268         }
 269         else {
 270                 cx25840_write(client, 0x402, 0x04);
 271                 cx25840_write(client, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
 272         }
 273         cx25840_and_or(client, 0x401, ~0x60, 0);
 274         cx25840_and_or(client, 0x401, ~0x60, 0x60);
 275         cx25840_and_or(client, 0x810, ~0x01, 1);
 276
 277         if (state->radio) {
 278                 cx25840_write(client, 0x808, 0xf9);
 279                 cx25840_write(client, 0x80b, 0x00);
 280         }
 281         else if (std & V4L2_STD_525_60) {
 282                 /* Certain Hauppauge PVR150 models have a hardware bug
 283                    that causes audio to drop out. For these models the
 284                    audio standard must be set explicitly.
 285                    To be precise: it affects cards with tuner models
 286                    85, 99 and 112 (model numbers from tveeprom). */
 287                 int hw_fix = state->pvr150_workaround;
 288
 289                 if (std == V4L2_STD_NTSC_M_JP) {
 290                         /* Japan uses EIAJ audio standard */
 291                         cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
 292                 } else if (std == V4L2_STD_NTSC_M_KR) {
 293                         /* South Korea uses A2 audio standard */
 294                         cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
 295                 } else {
 296                         /* Others use the BTSC audio standard */
 297                         cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
 298                 }
 299                 cx25840_write(client, 0x80b, 0x00);
 300         } else if (std & V4L2_STD_PAL) {
 301                 /* Follow tuner change procedure for PAL */
 302                 cx25840_write(client, 0x808, 0xff);
 303                 cx25840_write(client, 0x80b, 0x10);
 304         } else if (std & V4L2_STD_SECAM) {
 305                 /* Select autodetect for SECAM */
 306                 cx25840_write(client, 0x808, 0xff);
 307                 cx25840_write(client, 0x80b, 0x10);
 308         }
 309
 310         cx25840_and_or(client, 0x810, ~0x01, 0);
 311 }
 312
 313 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 314                                                 enum cx25840_audio_input aud_input)
 315 {
 316         struct cx25840_state *state = i2c_get_clientdata(client);
 317         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
 318                            vid_input <= CX25840_COMPOSITE8);
 319         u8 reg;
 320
 321         v4l_dbg(1, cx25840_debug, client, "decoder set video input %d, audio input %d\n",
 322                         vid_input, aud_input);
 323
 324         if (is_composite) {
 325                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
 326         } else {
 327                 int luma = vid_input & 0xf0;
 328                 int chroma = vid_input & 0xf00;
 329
 330                 if ((vid_input & ~0xff0) ||
 331                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
 332                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
 333                         v4l_err(client, "0x%04x is not a valid video input!\n", vid_input);
 334                         return -EINVAL;
 335                 }
 336                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
 337                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
 338                         reg &= 0x3f;
 339                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
 340                 } else {
 341                         reg &= 0xcf;
 342                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
 343                 }
 344         }
 345
 346         switch (aud_input) {
 347         case CX25840_AUDIO_SERIAL:
 348                 /* do nothing, use serial audio input */
 349                 break;
 350         case CX25840_AUDIO4: reg &= ~0x30; break;
 351         case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
 352         case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
 353         case CX25840_AUDIO7: reg &= ~0xc0; break;
 354         case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
 355
 356         default:
 357                 v4l_err(client, "0x%04x is not a valid audio input!\n", aud_input);
 358                 return -EINVAL;
 359         }
 360
 361         cx25840_write(client, 0x103, reg);
 362         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
 363         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
 364         /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
 365         cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
 366         /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
 367         if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
 368                 cx25840_and_or(client, 0x102, ~0x4, 4);
 369         else
 370                 cx25840_and_or(client, 0x102, ~0x4, 0);
 371
 372         state->vid_input = vid_input;
 373         state->aud_input = aud_input;
 374         if (!state->is_cx25836) {
 375                 cx25840_audio_set_path(client);
 376                 input_change(client);
 377         }
 378         return 0;
 379 }
 380
 381 /* ----------------------------------------------------------------------- */
 382
 383 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
 384 {
 385         u8 fmt=0;       /* zero is autodetect */
 386
 387         /* First tests should be against specific std */
 388         if (std == V4L2_STD_NTSC_M_JP) {
 389                 fmt=0x2;
 390         } else if (std == V4L2_STD_NTSC_443) {
 391                 fmt=0x3;
 392         } else if (std == V4L2_STD_PAL_M) {
 393                 fmt=0x5;
 394         } else if (std == V4L2_STD_PAL_N) {
 395                 fmt=0x6;
 396         } else if (std == V4L2_STD_PAL_Nc) {
 397                 fmt=0x7;
 398         } else if (std == V4L2_STD_PAL_60) {
 399                 fmt=0x8;
 400         } else {
 401                 /* Then, test against generic ones */
 402                 if (std & V4L2_STD_NTSC) {
 403                         fmt=0x1;
 404                 } else if (std & V4L2_STD_PAL) {
 405                         fmt=0x4;
 406                 } else if (std & V4L2_STD_SECAM) {
 407                         fmt=0xc;
 408                 }
 409         }
 410
 411         v4l_dbg(1, cx25840_debug, client, "changing video std to fmt %i\n",fmt);
 412
 413         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
 414            Without this PAL may display a vertical ghosting effect.
 415            This happens for example with the Yuan MPC622. */
 416         if (fmt >= 4 && fmt < 8) {
 417                 /* Set format to NTSC-M */
 418                 cx25840_and_or(client, 0x400, ~0xf, 1);
 419                 /* Turn off LCOMB */
 420                 cx25840_and_or(client, 0x47b, ~6, 0);
 421         }
 422         cx25840_and_or(client, 0x400, ~0xf, fmt);
 423         cx25840_vbi_setup(client);
 424         return 0;
 425 }
 426
 427 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
 428 {
 429         struct cx25840_state *state = i2c_get_clientdata(client);
 430         /* check VID_FMT_SEL first */
 431         u8 fmt = cx25840_read(client, 0x400) & 0xf;
 432
 433         if (!fmt) {
 434                 /* check AFD_FMT_STAT if set to autodetect */
 435                 fmt = cx25840_read(client, 0x40d) & 0xf;
 436         }
 437
 438         switch (fmt) {
 439         case 0x1:
 440         {
 441                 /* if the audio std is A2-M, then this is the South Korean
 442                    NTSC standard */
 443                 if (!state->is_cx25836 && cx25840_read(client, 0x805) == 2)
 444                         return V4L2_STD_NTSC_M_KR;
 445                 return V4L2_STD_NTSC_M;
 446         }
 447         case 0x2: return V4L2_STD_NTSC_M_JP;
 448         case 0x3: return V4L2_STD_NTSC_443;
 449         case 0x4: return V4L2_STD_PAL;
 450         case 0x5: return V4L2_STD_PAL_M;
 451         case 0x6: return V4L2_STD_PAL_N;
 452         case 0x7: return V4L2_STD_PAL_Nc;
 453         case 0x8: return V4L2_STD_PAL_60;
 454         case 0xc: return V4L2_STD_SECAM;
 455         default: return V4L2_STD_UNKNOWN;
 456         }
 457 }
 458
 459 /* ----------------------------------------------------------------------- */
 460
 461 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 462 {
 463         struct cx25840_state *state = i2c_get_clientdata(client);
 464
 465         switch (ctrl->id) {
 466         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 467                 state->pvr150_workaround = ctrl->value;
 468                 set_input(client, state->vid_input, state->aud_input);
 469                 break;
 470
 471         case V4L2_CID_BRIGHTNESS:
 472                 if (ctrl->value < 0 || ctrl->value > 255) {
 473                         v4l_err(client, "invalid brightness setting %d\n",
 474                                     ctrl->value);
 475                         return -ERANGE;
 476                 }
 477
 478                 cx25840_write(client, 0x414, ctrl->value - 128);
 479                 break;
 480
 481         case V4L2_CID_CONTRAST:
 482                 if (ctrl->value < 0 || ctrl->value > 127) {
 483                         v4l_err(client, "invalid contrast setting %d\n",
 484                                     ctrl->value);
 485                         return -ERANGE;
 486                 }
 487
 488                 cx25840_write(client, 0x415, ctrl->value << 1);
 489                 break;
 490
 491         case V4L2_CID_SATURATION:
 492                 if (ctrl->value < 0 || ctrl->value > 127) {
 493                         v4l_err(client, "invalid saturation setting %d\n",
 494                                     ctrl->value);
 495                         return -ERANGE;
 496                 }
 497
 498                 cx25840_write(client, 0x420, ctrl->value << 1);
 499                 cx25840_write(client, 0x421, ctrl->value << 1);
 500                 break;
 501
 502         case V4L2_CID_HUE:
 503                 if (ctrl->value < -127 || ctrl->value > 127) {
 504                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
 505                         return -ERANGE;
 506                 }
 507
 508                 cx25840_write(client, 0x422, ctrl->value);
 509                 break;
 510
 511         case V4L2_CID_AUDIO_VOLUME:
 512         case V4L2_CID_AUDIO_BASS:
 513         case V4L2_CID_AUDIO_TREBLE:
 514         case V4L2_CID_AUDIO_BALANCE:
 515         case V4L2_CID_AUDIO_MUTE:
 516                 if (state->is_cx25836)
 517                         return -EINVAL;
 518                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 519
 520         default:
 521                 return -EINVAL;
 522         }
 523
 524         return 0;
 525 }
 526
 527 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 528 {
 529         struct cx25840_state *state = i2c_get_clientdata(client);
 530
 531         switch (ctrl->id) {
 532         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 533                 ctrl->value = state->pvr150_workaround;
 534                 break;
 535         case V4L2_CID_BRIGHTNESS:
 536                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
 537                 break;
 538         case V4L2_CID_CONTRAST:
 539                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 540                 break;
 541         case V4L2_CID_SATURATION:
 542                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 543                 break;
 544         case V4L2_CID_HUE:
 545                 ctrl->value = (s8)cx25840_read(client, 0x422);
 546                 break;
 547         case V4L2_CID_AUDIO_VOLUME:
 548         case V4L2_CID_AUDIO_BASS:
 549         case V4L2_CID_AUDIO_TREBLE:
 550         case V4L2_CID_AUDIO_BALANCE:
 551         case V4L2_CID_AUDIO_MUTE:
 552                 if (state->is_cx25836)
 553                         return -EINVAL;
 554                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 555         default:
 556                 return -EINVAL;
 557         }
 558
 559         return 0;
 560 }
 561
 562 /* ----------------------------------------------------------------------- */
 563
 564 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 565 {
 566         switch (fmt->type) {
 567         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 568                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 569         default:
 570                 return -EINVAL;
 571         }
 572
 573         return 0;
 574 }
 575
 576 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 577 {
 578         struct v4l2_pix_format *pix;
 579         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 580         int is_50Hz = !(cx25840_get_v4lstd(client) & V4L2_STD_525_60);
 581
 582         switch (fmt->type) {
 583         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 584                 pix = &(fmt->fmt.pix);
 585
 586                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 587                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 588
 589                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 590                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 591
 592                 Vlines = pix->height + (is_50Hz ? 4 : 7);
 593
 594                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 595                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 596                         v4l_err(client, "%dx%d is not a valid size!\n",
 597                                     pix->width, pix->height);
 598                         return -ERANGE;
 599                 }
 600
 601                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 602                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 603                 VSC &= 0x1fff;
 604
 605                 if (pix->width >= 385)
 606                         filter = 0;
 607                 else if (pix->width > 192)
 608                         filter = 1;
 609                 else if (pix->width > 96)
 610                         filter = 2;
 611                 else
 612                         filter = 3;
 613
 614                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
 615                             pix->width, pix->height, HSC, VSC);
 616
 617                 /* HSCALE=HSC */
 618                 cx25840_write(client, 0x418, HSC & 0xff);
 619                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 620                 cx25840_write(client, 0x41a, HSC >> 16);
 621                 /* VSCALE=VSC */
 622                 cx25840_write(client, 0x41c, VSC & 0xff);
 623                 cx25840_write(client, 0x41d, VSC >> 8);
 624                 /* VS_INTRLACE=1 VFILT=filter */
 625                 cx25840_write(client, 0x41e, 0x8 | filter);
 626                 break;
 627
 628         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 629                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 630
 631         case V4L2_BUF_TYPE_VBI_CAPTURE:
 632                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 633
 634         default:
 635                 return -EINVAL;
 636         }
 637
 638         return 0;
 639 }
 640
 641 /* ----------------------------------------------------------------------- */
 642
 643 static void log_video_status(struct i2c_client *client)
 644 {
 645         static const char *const fmt_strs[] = {
 646                 "0x0",
 647                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 648                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 649                 "0x9", "0xA", "0xB",
 650                 "SECAM",
 651                 "0xD", "0xE", "0xF"
 652         };
 653
 654         struct cx25840_state *state = i2c_get_clientdata(client);
 655         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
 656         u8 gen_stat1 = cx25840_read(client, 0x40d);
 657         u8 gen_stat2 = cx25840_read(client, 0x40e);
 658         int vid_input = state->vid_input;
 659
 660         v4l_info(client, "Video signal:              %spresent\n",
 661                     (gen_stat2 & 0x20) ? "" : "not ");
 662         v4l_info(client, "Detected format:           %s\n",
 663                     fmt_strs[gen_stat1 & 0xf]);
 664
 665         v4l_info(client, "Specified standard:        %s\n",
 666                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
 667
 668         if (vid_input >= CX25840_COMPOSITE1 &&
 669             vid_input <= CX25840_COMPOSITE8) {
 670                 v4l_info(client, "Specified video input:     Composite %d\n",
 671                         vid_input - CX25840_COMPOSITE1 + 1);
 672         } else {
 673                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
 674                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
 675         }
 676
 677         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
 678 }
 679
 680 /* ----------------------------------------------------------------------- */
 681
 682 static void log_audio_status(struct i2c_client *client)
 683 {
 684         struct cx25840_state *state = i2c_get_clientdata(client);
 685         u8 download_ctl = cx25840_read(client, 0x803);
 686         u8 mod_det_stat0 = cx25840_read(client, 0x804);
 687         u8 mod_det_stat1 = cx25840_read(client, 0x805);
 688         u8 audio_config = cx25840_read(client, 0x808);
 689         u8 pref_mode = cx25840_read(client, 0x809);
 690         u8 afc0 = cx25840_read(client, 0x80b);
 691         u8 mute_ctl = cx25840_read(client, 0x8d3);
 692         int aud_input = state->aud_input;
 693         char *p;
 694
 695         switch (mod_det_stat0) {
 696         case 0x00: p = "mono"; break;
 697         case 0x01: p = "stereo"; break;
 698         case 0x02: p = "dual"; break;
 699         case 0x04: p = "tri"; break;
 700         case 0x10: p = "mono with SAP"; break;
 701         case 0x11: p = "stereo with SAP"; break;
 702         case 0x12: p = "dual with SAP"; break;
 703         case 0x14: p = "tri with SAP"; break;
 704         case 0xfe: p = "forced mode"; break;
 705         default: p = "not defined";
 706         }
 707         v4l_info(client, "Detected audio mode:       %s\n", p);
 708
 709         switch (mod_det_stat1) {
 710         case 0x00: p = "not defined"; break;
 711         case 0x01: p = "EIAJ"; break;
 712         case 0x02: p = "A2-M"; break;
 713         case 0x03: p = "A2-BG"; break;
 714         case 0x04: p = "A2-DK1"; break;
 715         case 0x05: p = "A2-DK2"; break;
 716         case 0x06: p = "A2-DK3"; break;
 717         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
 718         case 0x08: p = "AM-L"; break;
 719         case 0x09: p = "NICAM-BG"; break;
 720         case 0x0a: p = "NICAM-DK"; break;
 721         case 0x0b: p = "NICAM-I"; break;
 722         case 0x0c: p = "NICAM-L"; break;
 723         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
 724         case 0x0e: p = "IF FM Radio"; break;
 725         case 0x0f: p = "BTSC"; break;
 726         case 0x10: p = "high-deviation FM"; break;
 727         case 0x11: p = "very high-deviation FM"; break;
 728         case 0xfd: p = "unknown audio standard"; break;
 729         case 0xfe: p = "forced audio standard"; break;
 730         case 0xff: p = "no detected audio standard"; break;
 731         default: p = "not defined";
 732         }
 733         v4l_info(client, "Detected audio standard:   %s\n", p);
 734         v4l_info(client, "Audio muted:               %s\n",
 735                     (state->unmute_volume >= 0) ? "yes" : "no");
 736         v4l_info(client, "Audio microcontroller:     %s\n",
 737                     (download_ctl & 0x10) ?
 738                                 ((mute_ctl & 0x2) ? "detecting" : "running") : "stopped");
 739
 740         switch (audio_config >> 4) {
 741         case 0x00: p = "undefined"; break;
 742         case 0x01: p = "BTSC"; break;
 743         case 0x02: p = "EIAJ"; break;
 744         case 0x03: p = "A2-M"; break;
 745         case 0x04: p = "A2-BG"; break;
 746         case 0x05: p = "A2-DK1"; break;
 747         case 0x06: p = "A2-DK2"; break;
 748         case 0x07: p = "A2-DK3"; break;
 749         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
 750         case 0x09: p = "AM-L"; break;
 751         case 0x0a: p = "NICAM-BG"; break;
 752         case 0x0b: p = "NICAM-DK"; break;
 753         case 0x0c: p = "NICAM-I"; break;
 754         case 0x0d: p = "NICAM-L"; break;
 755         case 0x0e: p = "FM radio"; break;
 756         case 0x0f: p = "automatic detection"; break;
 757         default: p = "undefined";
 758         }
 759         v4l_info(client, "Configured audio standard: %s\n", p);
 760
 761         if ((audio_config >> 4) < 0xF) {
 762                 switch (audio_config & 0xF) {
 763                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
 764                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
 765                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
 766                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
 767                 case 0x04: p = "STEREO"; break;
 768                 case 0x05: p = "DUAL1 (AB)"; break;
 769                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
 770                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
 771                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
 772                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
 773                 case 0x0a: p = "SAP"; break;
 774                 default: p = "undefined";
 775                 }
 776                 v4l_info(client, "Configured audio mode:     %s\n", p);
 777         } else {
 778                 switch (audio_config & 0xF) {
 779                 case 0x00: p = "BG"; break;
 780                 case 0x01: p = "DK1"; break;
 781                 case 0x02: p = "DK2"; break;
 782                 case 0x03: p = "DK3"; break;
 783                 case 0x04: p = "I"; break;
 784                 case 0x05: p = "L"; break;
 785                 case 0x06: p = "BTSC"; break;
 786                 case 0x07: p = "EIAJ"; break;
 787                 case 0x08: p = "A2-M"; break;
 788                 case 0x09: p = "FM Radio"; break;
 789                 case 0x0f: p = "automatic standard and mode detection"; break;
 790                 default: p = "undefined";
 791                 }
 792                 v4l_info(client, "Configured audio system:   %s\n", p);
 793         }
 794
 795         if (aud_input) {
 796                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
 797         } else {
 798                 v4l_info(client, "Specified audio input:     External\n");
 799         }
 800
 801         switch (pref_mode & 0xf) {
 802         case 0: p = "mono/language A"; break;
 803         case 1: p = "language B"; break;
 804         case 2: p = "language C"; break;
 805         case 3: p = "analog fallback"; break;
 806         case 4: p = "stereo"; break;
 807         case 5: p = "language AC"; break;
 808         case 6: p = "language BC"; break;
 809         case 7: p = "language AB"; break;
 810         default: p = "undefined";
 811         }
 812         v4l_info(client, "Preferred audio mode:      %s\n", p);
 813
 814         if ((audio_config & 0xf) == 0xf) {
 815                 switch ((afc0 >> 3) & 0x3) {
 816                 case 0: p = "system DK"; break;
 817                 case 1: p = "system L"; break;
 818                 case 2: p = "autodetect"; break;
 819                 default: p = "undefined";
 820                 }
 821                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
 822
 823                 switch (afc0 & 0x7) {
 824                 case 0: p = "chroma"; break;
 825                 case 1: p = "BTSC"; break;
 826                 case 2: p = "EIAJ"; break;
 827                 case 3: p = "A2-M"; break;
 828                 case 4: p = "autodetect"; break;
 829                 default: p = "undefined";
 830                 }
 831                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
 832         }
 833 }
 834
 835 /* ----------------------------------------------------------------------- */
 836
 837 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 838                            void *arg)
 839 {
 840         struct cx25840_state *state = i2c_get_clientdata(client);
 841         struct v4l2_tuner *vt = arg;
 842         struct v4l2_routing *route = arg;
 843
 844         /* ignore these commands */
 845         switch (cmd) {
 846                 case TUNER_SET_TYPE_ADDR:
 847                         return 0;
 848         }
 849
 850         if (!state->is_initialized) {
 851                 v4l_dbg(1, cx25840_debug, client, "cmd %08x triggered fw load\n", cmd);
 852                 /* initialize on first use */
 853                 state->is_initialized = 1;
 854                 if (state->is_cx25836)
 855                         cx25836_initialize(client);
 856                 else
 857                         cx25840_initialize(client);
 858         }
 859
 860         switch (cmd) {
 861 #ifdef CONFIG_VIDEO_ADV_DEBUG
 862         /* ioctls to allow direct access to the
 863          * cx25840 registers for testing */
 864         case VIDIOC_DBG_G_REGISTER:
 865         case VIDIOC_DBG_S_REGISTER:
 866         {
 867                 struct v4l2_register *reg = arg;
 868
 869                 if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
 870                         return -EINVAL;
 871                 if (!capable(CAP_SYS_ADMIN))
 872                         return -EPERM;
 873                 if (cmd == VIDIOC_DBG_G_REGISTER)
 874                         reg->val = cx25840_read(client, reg->reg & 0x0fff);
 875                 else
 876                         cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 877                 break;
 878         }
 879 #endif
 880
 881         case VIDIOC_INT_DECODE_VBI_LINE:
 882                 return cx25840_vbi(client, cmd, arg);
 883
 884         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 885                 return cx25840_audio(client, cmd, arg);
 886
 887         case VIDIOC_STREAMON:
 888                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
 889                 cx25840_write(client, 0x115, state->is_cx25836 ? 0x0c : 0x8c);
 890                 cx25840_write(client, 0x116, state->is_cx25836 ? 0x04 : 0x07);
 891                 break;
 892
 893         case VIDIOC_STREAMOFF:
 894                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
 895                 cx25840_write(client, 0x115, 0x00);
 896                 cx25840_write(client, 0x116, 0x00);
 897                 break;
 898
 899         case VIDIOC_LOG_STATUS:
 900                 log_video_status(client);
 901                 if (!state->is_cx25836)
 902                         log_audio_status(client);
 903                 break;
 904
 905         case VIDIOC_G_CTRL:
 906                 return get_v4lctrl(client, (struct v4l2_control *)arg);
 907
 908         case VIDIOC_S_CTRL:
 909                 return set_v4lctrl(client, (struct v4l2_control *)arg);
 910
 911         case VIDIOC_QUERYCTRL:
 912         {
 913                 struct v4l2_queryctrl *qc = arg;
 914
 915                 switch (qc->id) {
 916                         case V4L2_CID_BRIGHTNESS:
 917                         case V4L2_CID_CONTRAST:
 918                         case V4L2_CID_SATURATION:
 919                         case V4L2_CID_HUE:
 920                                 return v4l2_ctrl_query_fill_std(qc);
 921                         default:
 922                                 break;
 923                 }
 924                 if (state->is_cx25836)
 925                         return -EINVAL;
 926
 927                 switch (qc->id) {
 928                         case V4L2_CID_AUDIO_VOLUME:
 929                         case V4L2_CID_AUDIO_MUTE:
 930                         case V4L2_CID_AUDIO_BALANCE:
 931                         case V4L2_CID_AUDIO_BASS:
 932                         case V4L2_CID_AUDIO_TREBLE:
 933                                 return v4l2_ctrl_query_fill_std(qc);
 934                         default:
 935                                 return -EINVAL;
 936                 }
 937                 return -EINVAL;
 938         }
 939
 940         case VIDIOC_G_STD:
 941                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
 942                 break;
 943
 944         case VIDIOC_S_STD:
 945                 state->radio = 0;
 946                 return set_v4lstd(client, *(v4l2_std_id *)arg);
 947
 948         case AUDC_SET_RADIO:
 949                 state->radio = 1;
 950                 break;
 951
 952         case VIDIOC_INT_G_VIDEO_ROUTING:
 953                 route->input = state->vid_input;
 954                 route->output = 0;
 955                 break;
 956
 957         case VIDIOC_INT_S_VIDEO_ROUTING:
 958                 return set_input(client, route->input, state->aud_input);
 959
 960         case VIDIOC_INT_G_AUDIO_ROUTING:
 961                 if (state->is_cx25836)
 962                         return -EINVAL;
 963                 route->input = state->aud_input;
 964                 route->output = 0;
 965                 break;
 966
 967         case VIDIOC_INT_S_AUDIO_ROUTING:
 968                 if (state->is_cx25836)
 969                         return -EINVAL;
 970                 return set_input(client, state->vid_input, route->input);
 971
 972         case VIDIOC_S_FREQUENCY:
 973                 if (!state->is_cx25836) {
 974                         input_change(client);
 975                 }
 976                 break;
 977
 978         case VIDIOC_G_TUNER:
 979         {
 980                 u8 vpres = cx25840_read(client, 0x40e) & 0x20;
 981                 u8 mode;
 982                 int val = 0;
 983
 984                 if (state->radio)
 985                         break;
 986
 987                 vt->signal = vpres ? 0xffff : 0x0;
 988                 if (state->is_cx25836)
 989                         break;
 990
 991                 vt->capability |=
 992                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
 993                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
 994
 995                 mode = cx25840_read(client, 0x804);
 996
 997                 /* get rxsubchans and audmode */
 998                 if ((mode & 0xf) == 1)
 999                         val |= V4L2_TUNER_SUB_STEREO;
1000                 else
1001                         val |= V4L2_TUNER_SUB_MONO;
1002
1003                 if (mode == 2 || mode == 4)
1004                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1005
1006                 if (mode & 0x10)
1007                         val |= V4L2_TUNER_SUB_SAP;
1008
1009                 vt->rxsubchans = val;
1010                 vt->audmode = state->audmode;
1011                 break;
1012         }
1013
1014         case VIDIOC_S_TUNER:
1015                 if (state->radio || state->is_cx25836)
1016                         break;
1017
1018                 switch (vt->audmode) {
1019                 case V4L2_TUNER_MODE_MONO:
1020                         /* mono      -> mono
1021                            stereo    -> mono
1022                            bilingual -> lang1 */
1023                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
1024                         break;
1025                 case V4L2_TUNER_MODE_STEREO:
1026                 case V4L2_TUNER_MODE_LANG1:
1027                         /* mono      -> mono
1028                            stereo    -> stereo
1029                            bilingual -> lang1 */
1030                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
1031                         break;
1032                 case V4L2_TUNER_MODE_LANG1_LANG2:
1033                         /* mono      -> mono
1034                            stereo    -> stereo
1035                            bilingual -> lang1/lang2 */
1036                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
1037                         break;
1038                 case V4L2_TUNER_MODE_LANG2:
1039                         /* mono      -> mono
1040                            stereo    -> stereo
1041                            bilingual -> lang2 */
1042                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
1043                         break;
1044                 default:
1045                         return -EINVAL;
1046                 }
1047                 state->audmode = vt->audmode;
1048                 break;
1049
1050         case VIDIOC_G_FMT:
1051                 return get_v4lfmt(client, (struct v4l2_format *)arg);
1052
1053         case VIDIOC_S_FMT:
1054                 return set_v4lfmt(client, (struct v4l2_format *)arg);
1055
1056         case VIDIOC_INT_RESET:
1057                 if (state->is_cx25836)
1058                         cx25836_initialize(client);
1059                 else
1060                         cx25840_initialize(client);
1061                 break;
1062
1063         case VIDIOC_G_CHIP_IDENT:
1064                 return v4l2_chip_ident_i2c_client(client, arg, state->id, state->rev);
1065
1066         default:
1067                 return -EINVAL;
1068         }
1069
1070         return 0;
1071 }
1072
1073 /* ----------------------------------------------------------------------- */
1074
1075 static int cx25840_probe(struct i2c_client *client)
1076 {
1077         struct cx25840_state *state;
1078         u32 id;
1079         u16 device_id;
1080
1081         /* Check if the adapter supports the needed features */
1082         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1083                 return -EIO;
1084
1085         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", client->addr << 1);
1086
1087         device_id = cx25840_read(client, 0x101) << 8;
1088         device_id |= cx25840_read(client, 0x100);
1089
1090         /* The high byte of the device ID should be
1091          * 0x83 for the cx2583x and 0x84 for the cx2584x */
1092         if ((device_id & 0xff00) == 0x8300) {
1093                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1094         }
1095         else if ((device_id & 0xff00) == 0x8400) {
1096                 id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
1097         }
1098         else {
1099                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
1100                 return -ENODEV;
1101         }
1102
1103         state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
1104         if (state == NULL) {
1105                 return -ENOMEM;
1106         }
1107
1108         /* Note: revision '(device_id & 0x0f) == 2' was never built. The
1109            marking skips from 0x1 == 22 to 0x3 == 23. */
1110         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
1111                     (device_id & 0xfff0) >> 4,
1112                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : (device_id & 0x0f),
1113                     client->addr << 1, client->adapter->name);
1114
1115         i2c_set_clientdata(client, state);
1116         state->c = client;
1117         state->is_cx25836 = ((device_id & 0xff00) == 0x8300);
1118         state->vid_input = CX25840_COMPOSITE7;
1119         state->aud_input = CX25840_AUDIO8;
1120         state->audclk_freq = 48000;
1121         state->pvr150_workaround = 0;
1122         state->audmode = V4L2_TUNER_MODE_LANG1;
1123         state->unmute_volume = -1;
1124         state->vbi_line_offset = 8;
1125         state->id = id;
1126         state->rev = device_id;
1127         return 0;
1128 }
1129
1130 static int cx25840_remove(struct i2c_client *client)
1131 {
1132         kfree(i2c_get_clientdata(client));
1133         return 0;
1134 }
1135
1136 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
1137         .name = "cx25840",
1138         .driverid = I2C_DRIVERID_CX25840,
1139         .command = cx25840_command,
1140         .probe = cx25840_probe,
1141         .remove = cx25840_remove,
1142 };