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  * 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 <media/v4l2-common.h>
  38 #include <media/v4l2-chip-ident.h>
  39 #include <media/cx25840.h>
  40
  41 #include "cx25840-core.h"
  42
  43 MODULE_DESCRIPTION("Conexant CX25840 audio/video decoder driver");
  44 MODULE_AUTHOR("Ulf Eklund, Chris Kennedy, Hans Verkuil, Tyler Trafford");
  45 MODULE_LICENSE("GPL");
  46
  47 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
  48
  49
  50 int cx25840_debug;
  51
  52 module_param_named(debug,cx25840_debug, int, 0644);
  53
  54 MODULE_PARM_DESC(debug, "Debugging messages [0=Off (default) 1=On]");
  55
  56 I2C_CLIENT_INSMOD;
  57
  58 /* ----------------------------------------------------------------------- */
  59
  60 int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
  61 {
  62         u8 buffer[3];
  63         buffer[0] = addr >> 8;
  64         buffer[1] = addr & 0xff;
  65         buffer[2] = value;
  66         return i2c_master_send(client, buffer, 3);
  67 }
  68
  69 int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
  70 {
  71         u8 buffer[6];
  72         buffer[0] = addr >> 8;
  73         buffer[1] = addr & 0xff;
  74         buffer[2] = value >> 24;
  75         buffer[3] = (value >> 16) & 0xff;
  76         buffer[4] = (value >> 8) & 0xff;
  77         buffer[5] = value & 0xff;
  78         return i2c_master_send(client, buffer, 6);
  79 }
  80
  81 u8 cx25840_read(struct i2c_client * client, u16 addr)
  82 {
  83         u8 buffer[2];
  84         buffer[0] = addr >> 8;
  85         buffer[1] = addr & 0xff;
  86
  87         if (i2c_master_send(client, buffer, 2) < 2)
  88                 return 0;
  89
  90         if (i2c_master_recv(client, buffer, 1) < 1)
  91                 return 0;
  92
  93         return buffer[0];
  94 }
  95
  96 u32 cx25840_read4(struct i2c_client * client, u16 addr)
  97 {
  98         u8 buffer[4];
  99         buffer[0] = addr >> 8;
 100         buffer[1] = addr & 0xff;
 101
 102         if (i2c_master_send(client, buffer, 2) < 2)
 103                 return 0;
 104
 105         if (i2c_master_recv(client, buffer, 4) < 4)
 106                 return 0;
 107
 108         return (buffer[3] << 24) | (buffer[2] << 16) |
 109             (buffer[1] << 8) | buffer[0];
 110 }
 111
 112 int cx25840_and_or(struct i2c_client *client, u16 addr, unsigned and_mask,
 113                    u8 or_value)
 114 {
 115         return cx25840_write(client, addr,
 116                              (cx25840_read(client, addr) & and_mask) |
 117                              or_value);
 118 }
 119
 120 /* ----------------------------------------------------------------------- */
 121
 122 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 123                                                 enum cx25840_audio_input aud_input);
 124 static void log_audio_status(struct i2c_client *client);
 125 static void log_video_status(struct i2c_client *client);
 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         cx25840_write(client, 0x159, 0xe1);
 137         cx25840_write(client, 0x15a, 0x86);
 138         cx25840_write(client, 0x159, 0xe0);
 139         cx25840_write(client, 0x159, 0xe1);
 140         cx25840_write(client, 0x15b, 0x10);
 141 }
 142
 143 static void init_dll2(struct i2c_client *client)
 144 {
 145         /* This is the Hauppauge sequence used to
 146          * initialize the Delay Lock Loop 2 (ADC DLL). */
 147         cx25840_write(client, 0x15d, 0xe3);
 148         cx25840_write(client, 0x15e, 0x86);
 149         cx25840_write(client, 0x15f, 0x06);
 150         cx25840_write(client, 0x15d, 0xe1);
 151         cx25840_write(client, 0x15d, 0xe0);
 152         cx25840_write(client, 0x15d, 0xe1);
 153 }
 154
 155 static void cx25836_initialize(struct i2c_client *client)
 156 {
 157         /* reset configuration is described on page 3-77 of the CX25836 datasheet */
 158         /* 2. */
 159         cx25840_and_or(client, 0x000, ~0x01, 0x01);
 160         cx25840_and_or(client, 0x000, ~0x01, 0x00);
 161         /* 3a. */
 162         cx25840_and_or(client, 0x15a, ~0x70, 0x00);
 163         /* 3b. */
 164         cx25840_and_or(client, 0x15b, ~0x1e, 0x06);
 165         /* 3c. */
 166         cx25840_and_or(client, 0x159, ~0x02, 0x02);
 167         /* 3d. */
 168         /* There should be a 10-us delay here, but since the
 169            i2c bus already has a 10-us delay we don't need to do
 170            anything */
 171         /* 3e. */
 172         cx25840_and_or(client, 0x159, ~0x02, 0x00);
 173         /* 3f. */
 174         cx25840_and_or(client, 0x159, ~0xc0, 0xc0);
 175         /* 3g. */
 176         cx25840_and_or(client, 0x159, ~0x01, 0x00);
 177         cx25840_and_or(client, 0x159, ~0x01, 0x01);
 178         /* 3h. */
 179         cx25840_and_or(client, 0x15b, ~0x1e, 0x10);
 180 }
 181
 182 static void cx25840_initialize(struct i2c_client *client, int loadfw)
 183 {
 184         struct cx25840_state *state = i2c_get_clientdata(client);
 185
 186         /* datasheet startup in numbered steps, refer to page 3-77 */
 187         /* 2. */
 188         cx25840_and_or(client, 0x803, ~0x10, 0x00);
 189         /* The default of this register should be 4, but I get 0 instead.
 190          * Set this register to 4 manually. */
 191         cx25840_write(client, 0x000, 0x04);
 192         /* 3. */
 193         init_dll1(client);
 194         init_dll2(client);
 195         cx25840_write(client, 0x136, 0x0a);
 196         /* 4. */
 197         cx25840_write(client, 0x13c, 0x01);
 198         cx25840_write(client, 0x13c, 0x00);
 199         /* 5. */
 200         if (loadfw)
 201                 cx25840_loadfw(client);
 202         /* 6. */
 203         cx25840_write(client, 0x115, 0x8c);
 204         cx25840_write(client, 0x116, 0x07);
 205         cx25840_write(client, 0x118, 0x02);
 206         /* 7. */
 207         cx25840_write(client, 0x4a5, 0x80);
 208         cx25840_write(client, 0x4a5, 0x00);
 209         cx25840_write(client, 0x402, 0x00);
 210         /* 8. */
 211         cx25840_and_or(client, 0x401, ~0x18, 0);
 212         cx25840_and_or(client, 0x4a2, ~0x10, 0x10);
 213         /* steps 8c and 8d are done in change_input() */
 214         /* 10. */
 215         cx25840_write(client, 0x8d3, 0x1f);
 216         cx25840_write(client, 0x8e3, 0x03);
 217
 218         cx25840_vbi_setup(client);
 219
 220         /* trial and error says these are needed to get audio */
 221         cx25840_write(client, 0x914, 0xa0);
 222         cx25840_write(client, 0x918, 0xa0);
 223         cx25840_write(client, 0x919, 0x01);
 224
 225         /* stereo prefered */
 226         cx25840_write(client, 0x809, 0x04);
 227         /* AC97 shift */
 228         cx25840_write(client, 0x8cf, 0x0f);
 229
 230         /* (re)set input */
 231         set_input(client, state->vid_input, state->aud_input);
 232
 233         /* start microcontroller */
 234         cx25840_and_or(client, 0x803, ~0x10, 0x10);
 235 }
 236
 237 /* ----------------------------------------------------------------------- */
 238
 239 static void input_change(struct i2c_client *client)
 240 {
 241         struct cx25840_state *state = i2c_get_clientdata(client);
 242         v4l2_std_id std = cx25840_get_v4lstd(client);
 243
 244         /* Follow step 8c and 8d of section 3.16 in the cx25840 datasheet */
 245         if (std & V4L2_STD_SECAM) {
 246                 cx25840_write(client, 0x402, 0);
 247         }
 248         else {
 249                 cx25840_write(client, 0x402, 0x04);
 250                 cx25840_write(client, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
 251         }
 252         cx25840_and_or(client, 0x401, ~0x60, 0);
 253         cx25840_and_or(client, 0x401, ~0x60, 0x60);
 254
 255         if (std & V4L2_STD_525_60) {
 256                 /* Certain Hauppauge PVR150 models have a hardware bug
 257                    that causes audio to drop out. For these models the
 258                    audio standard must be set explicitly.
 259                    To be precise: it affects cards with tuner models
 260                    85, 99 and 112 (model numbers from tveeprom). */
 261                 int hw_fix = state->pvr150_workaround;
 262
 263                 if (std == V4L2_STD_NTSC_M_JP) {
 264                         /* Japan uses EIAJ audio standard */
 265                         cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
 266                 } else if (std == V4L2_STD_NTSC_M_KR) {
 267                         /* South Korea uses A2 audio standard */
 268                         cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
 269                 } else {
 270                         /* Others use the BTSC audio standard */
 271                         cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
 272                 }
 273                 cx25840_write(client, 0x80b, 0x00);
 274         } else if (std & V4L2_STD_PAL) {
 275                 /* Follow tuner change procedure for PAL */
 276                 cx25840_write(client, 0x808, 0xff);
 277                 cx25840_write(client, 0x80b, 0x10);
 278         } else if (std & V4L2_STD_SECAM) {
 279                 /* Select autodetect for SECAM */
 280                 cx25840_write(client, 0x808, 0xff);
 281                 cx25840_write(client, 0x80b, 0x10);
 282         }
 283
 284         if (cx25840_read(client, 0x803) & 0x10) {
 285                 /* restart audio decoder microcontroller */
 286                 cx25840_and_or(client, 0x803, ~0x10, 0x00);
 287                 cx25840_and_or(client, 0x803, ~0x10, 0x10);
 288         }
 289 }
 290
 291 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 292                                                 enum cx25840_audio_input aud_input)
 293 {
 294         struct cx25840_state *state = i2c_get_clientdata(client);
 295         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
 296                            vid_input <= CX25840_COMPOSITE8);
 297         u8 reg;
 298
 299         v4l_dbg(1, cx25840_debug, client, "decoder set video input %d, audio input %d\n",
 300                         vid_input, aud_input);
 301
 302         if (is_composite) {
 303                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
 304         } else {
 305                 int luma = vid_input & 0xf0;
 306                 int chroma = vid_input & 0xf00;
 307
 308                 if ((vid_input & ~0xff0) ||
 309                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
 310                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
 311                         v4l_err(client, "0x%04x is not a valid video input!\n", vid_input);
 312                         return -EINVAL;
 313                 }
 314                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
 315                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
 316                         reg &= 0x3f;
 317                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
 318                 } else {
 319                         reg &= 0xcf;
 320                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
 321                 }
 322         }
 323
 324         switch (aud_input) {
 325         case CX25840_AUDIO_SERIAL:
 326                 /* do nothing, use serial audio input */
 327                 break;
 328         case CX25840_AUDIO4: reg &= ~0x30; break;
 329         case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
 330         case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
 331         case CX25840_AUDIO7: reg &= ~0xc0; break;
 332         case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
 333
 334         default:
 335                 v4l_err(client, "0x%04x is not a valid audio input!\n", aud_input);
 336                 return -EINVAL;
 337         }
 338
 339         cx25840_write(client, 0x103, reg);
 340         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
 341         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
 342         /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
 343         cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
 344         /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
 345         if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
 346                 cx25840_and_or(client, 0x102, ~0x4, 4);
 347         else
 348                 cx25840_and_or(client, 0x102, ~0x4, 0);
 349
 350         state->vid_input = vid_input;
 351         state->aud_input = aud_input;
 352         if (!state->is_cx25836) {
 353                 cx25840_audio_set_path(client);
 354                 input_change(client);
 355         }
 356         return 0;
 357 }
 358
 359 /* ----------------------------------------------------------------------- */
 360
 361 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
 362 {
 363         u8 fmt=0;       /* zero is autodetect */
 364
 365         /* First tests should be against specific std */
 366         if (std == V4L2_STD_NTSC_M_JP) {
 367                 fmt=0x2;
 368         } else if (std == V4L2_STD_NTSC_443) {
 369                 fmt=0x3;
 370         } else if (std == V4L2_STD_PAL_M) {
 371                 fmt=0x5;
 372         } else if (std == V4L2_STD_PAL_N) {
 373                 fmt=0x6;
 374         } else if (std == V4L2_STD_PAL_Nc) {
 375                 fmt=0x7;
 376         } else if (std == V4L2_STD_PAL_60) {
 377                 fmt=0x8;
 378         } else {
 379                 /* Then, test against generic ones */
 380                 if (std & V4L2_STD_NTSC) {
 381                         fmt=0x1;
 382                 } else if (std & V4L2_STD_PAL) {
 383                         fmt=0x4;
 384                 } else if (std & V4L2_STD_SECAM) {
 385                         fmt=0xc;
 386                 }
 387         }
 388
 389         v4l_dbg(1, cx25840_debug, client, "changing video std to fmt %i\n",fmt);
 390
 391         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
 392            Without this PAL may display a vertical ghosting effect.
 393            This happens for example with the Yuan MPC622. */
 394         if (fmt >= 4 && fmt < 8) {
 395                 /* Set format to NTSC-M */
 396                 cx25840_and_or(client, 0x400, ~0xf, 1);
 397                 /* Turn off LCOMB */
 398                 cx25840_and_or(client, 0x47b, ~6, 0);
 399         }
 400         cx25840_and_or(client, 0x400, ~0xf, fmt);
 401         cx25840_vbi_setup(client);
 402         return 0;
 403 }
 404
 405 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
 406 {
 407         struct cx25840_state *state = i2c_get_clientdata(client);
 408         /* check VID_FMT_SEL first */
 409         u8 fmt = cx25840_read(client, 0x400) & 0xf;
 410
 411         if (!fmt) {
 412                 /* check AFD_FMT_STAT if set to autodetect */
 413                 fmt = cx25840_read(client, 0x40d) & 0xf;
 414         }
 415
 416         switch (fmt) {
 417         case 0x1:
 418         {
 419                 /* if the audio std is A2-M, then this is the South Korean
 420                    NTSC standard */
 421                 if (!state->is_cx25836 && cx25840_read(client, 0x805) == 2)
 422                         return V4L2_STD_NTSC_M_KR;
 423                 return V4L2_STD_NTSC_M;
 424         }
 425         case 0x2: return V4L2_STD_NTSC_M_JP;
 426         case 0x3: return V4L2_STD_NTSC_443;
 427         case 0x4: return V4L2_STD_PAL;
 428         case 0x5: return V4L2_STD_PAL_M;
 429         case 0x6: return V4L2_STD_PAL_N;
 430         case 0x7: return V4L2_STD_PAL_Nc;
 431         case 0x8: return V4L2_STD_PAL_60;
 432         case 0xc: return V4L2_STD_SECAM;
 433         default: return V4L2_STD_UNKNOWN;
 434         }
 435 }
 436
 437 /* ----------------------------------------------------------------------- */
 438
 439 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 440 {
 441         struct cx25840_state *state = i2c_get_clientdata(client);
 442
 443         switch (ctrl->id) {
 444         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 445                 state->pvr150_workaround = ctrl->value;
 446                 set_input(client, state->vid_input, state->aud_input);
 447                 break;
 448
 449         case V4L2_CID_BRIGHTNESS:
 450                 if (ctrl->value < 0 || ctrl->value > 255) {
 451                         v4l_err(client, "invalid brightness setting %d\n",
 452                                     ctrl->value);
 453                         return -ERANGE;
 454                 }
 455
 456                 cx25840_write(client, 0x414, ctrl->value - 128);
 457                 break;
 458
 459         case V4L2_CID_CONTRAST:
 460                 if (ctrl->value < 0 || ctrl->value > 127) {
 461                         v4l_err(client, "invalid contrast setting %d\n",
 462                                     ctrl->value);
 463                         return -ERANGE;
 464                 }
 465
 466                 cx25840_write(client, 0x415, ctrl->value << 1);
 467                 break;
 468
 469         case V4L2_CID_SATURATION:
 470                 if (ctrl->value < 0 || ctrl->value > 127) {
 471                         v4l_err(client, "invalid saturation setting %d\n",
 472                                     ctrl->value);
 473                         return -ERANGE;
 474                 }
 475
 476                 cx25840_write(client, 0x420, ctrl->value << 1);
 477                 cx25840_write(client, 0x421, ctrl->value << 1);
 478                 break;
 479
 480         case V4L2_CID_HUE:
 481                 if (ctrl->value < -127 || ctrl->value > 127) {
 482                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
 483                         return -ERANGE;
 484                 }
 485
 486                 cx25840_write(client, 0x422, ctrl->value);
 487                 break;
 488
 489         case V4L2_CID_AUDIO_VOLUME:
 490         case V4L2_CID_AUDIO_BASS:
 491         case V4L2_CID_AUDIO_TREBLE:
 492         case V4L2_CID_AUDIO_BALANCE:
 493         case V4L2_CID_AUDIO_MUTE:
 494                 if (state->is_cx25836)
 495                         return -EINVAL;
 496                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 497
 498         default:
 499                 return -EINVAL;
 500         }
 501
 502         return 0;
 503 }
 504
 505 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 506 {
 507         struct cx25840_state *state = i2c_get_clientdata(client);
 508
 509         switch (ctrl->id) {
 510         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 511                 ctrl->value = state->pvr150_workaround;
 512                 break;
 513         case V4L2_CID_BRIGHTNESS:
 514                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
 515                 break;
 516         case V4L2_CID_CONTRAST:
 517                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 518                 break;
 519         case V4L2_CID_SATURATION:
 520                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 521                 break;
 522         case V4L2_CID_HUE:
 523                 ctrl->value = (s8)cx25840_read(client, 0x422);
 524                 break;
 525         case V4L2_CID_AUDIO_VOLUME:
 526         case V4L2_CID_AUDIO_BASS:
 527         case V4L2_CID_AUDIO_TREBLE:
 528         case V4L2_CID_AUDIO_BALANCE:
 529         case V4L2_CID_AUDIO_MUTE:
 530                 if (state->is_cx25836)
 531                         return -EINVAL;
 532                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 533         default:
 534                 return -EINVAL;
 535         }
 536
 537         return 0;
 538 }
 539
 540 /* ----------------------------------------------------------------------- */
 541
 542 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 543 {
 544         switch (fmt->type) {
 545         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 546                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 547         default:
 548                 return -EINVAL;
 549         }
 550
 551         return 0;
 552 }
 553
 554 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 555 {
 556         struct v4l2_pix_format *pix;
 557         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 558         int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);
 559
 560         switch (fmt->type) {
 561         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 562                 pix = &(fmt->fmt.pix);
 563
 564                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 565                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 566
 567                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 568                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 569
 570                 Vlines = pix->height + (is_pal ? 4 : 7);
 571
 572                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 573                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 574                         v4l_err(client, "%dx%d is not a valid size!\n",
 575                                     pix->width, pix->height);
 576                         return -ERANGE;
 577                 }
 578
 579                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 580                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 581                 VSC &= 0x1fff;
 582
 583                 if (pix->width >= 385)
 584                         filter = 0;
 585                 else if (pix->width > 192)
 586                         filter = 1;
 587                 else if (pix->width > 96)
 588                         filter = 2;
 589                 else
 590                         filter = 3;
 591
 592                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
 593                             pix->width, pix->height, HSC, VSC);
 594
 595                 /* HSCALE=HSC */
 596                 cx25840_write(client, 0x418, HSC & 0xff);
 597                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 598                 cx25840_write(client, 0x41a, HSC >> 16);
 599                 /* VSCALE=VSC */
 600                 cx25840_write(client, 0x41c, VSC & 0xff);
 601                 cx25840_write(client, 0x41d, VSC >> 8);
 602                 /* VS_INTRLACE=1 VFILT=filter */
 603                 cx25840_write(client, 0x41e, 0x8 | filter);
 604                 break;
 605
 606         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 607                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 608
 609         case V4L2_BUF_TYPE_VBI_CAPTURE:
 610                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 611
 612         default:
 613                 return -EINVAL;
 614         }
 615
 616         return 0;
 617 }
 618
 619 /* ----------------------------------------------------------------------- */
 620
 621 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 622                            void *arg)
 623 {
 624         struct cx25840_state *state = i2c_get_clientdata(client);
 625         struct v4l2_tuner *vt = arg;
 626         struct v4l2_routing *route = arg;
 627
 628         switch (cmd) {
 629 #ifdef CONFIG_VIDEO_ADV_DEBUG
 630         /* ioctls to allow direct access to the
 631          * cx25840 registers for testing */
 632         case VIDIOC_DBG_G_REGISTER:
 633         case VIDIOC_DBG_S_REGISTER:
 634         {
 635                 struct v4l2_register *reg = arg;
 636
 637                 if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
 638                         return -EINVAL;
 639                 if (!capable(CAP_SYS_ADMIN))
 640                         return -EPERM;
 641                 if (cmd == VIDIOC_DBG_G_REGISTER)
 642                         reg->val = cx25840_read(client, reg->reg & 0x0fff);
 643                 else
 644                         cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 645                 break;
 646         }
 647 #endif
 648
 649         case VIDIOC_INT_DECODE_VBI_LINE:
 650                 return cx25840_vbi(client, cmd, arg);
 651
 652         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 653                 return cx25840_audio(client, cmd, arg);
 654
 655         case VIDIOC_STREAMON:
 656                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
 657                 cx25840_write(client, 0x115, state->is_cx25836 ? 0x0c : 0x8c);
 658                 cx25840_write(client, 0x116, state->is_cx25836 ? 0x04 : 0x07);
 659                 break;
 660
 661         case VIDIOC_STREAMOFF:
 662                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
 663                 cx25840_write(client, 0x115, 0x00);
 664                 cx25840_write(client, 0x116, 0x00);
 665                 break;
 666
 667         case VIDIOC_LOG_STATUS:
 668                 log_video_status(client);
 669                 if (!state->is_cx25836)
 670                         log_audio_status(client);
 671                 break;
 672
 673         case VIDIOC_G_CTRL:
 674                 return get_v4lctrl(client, (struct v4l2_control *)arg);
 675
 676         case VIDIOC_S_CTRL:
 677                 return set_v4lctrl(client, (struct v4l2_control *)arg);
 678
 679         case VIDIOC_QUERYCTRL:
 680         {
 681                 struct v4l2_queryctrl *qc = arg;
 682
 683                 switch (qc->id) {
 684                         case V4L2_CID_BRIGHTNESS:
 685                         case V4L2_CID_CONTRAST:
 686                         case V4L2_CID_SATURATION:
 687                         case V4L2_CID_HUE:
 688                                 return v4l2_ctrl_query_fill_std(qc);
 689                         default:
 690                                 break;
 691                 }
 692                 if (state->is_cx25836)
 693                         return -EINVAL;
 694
 695                 switch (qc->id) {
 696                         case V4L2_CID_AUDIO_VOLUME:
 697                         case V4L2_CID_AUDIO_MUTE:
 698                         case V4L2_CID_AUDIO_BALANCE:
 699                         case V4L2_CID_AUDIO_BASS:
 700                         case V4L2_CID_AUDIO_TREBLE:
 701                                 return v4l2_ctrl_query_fill_std(qc);
 702                         default:
 703                                 return -EINVAL;
 704                 }
 705                 return -EINVAL;
 706         }
 707
 708         case VIDIOC_G_STD:
 709                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
 710                 break;
 711
 712         case VIDIOC_S_STD:
 713                 state->radio = 0;
 714                 return set_v4lstd(client, *(v4l2_std_id *)arg);
 715
 716         case AUDC_SET_RADIO:
 717                 state->radio = 1;
 718                 break;
 719
 720         case VIDIOC_INT_G_VIDEO_ROUTING:
 721                 route->input = state->vid_input;
 722                 route->output = 0;
 723                 break;
 724
 725         case VIDIOC_INT_S_VIDEO_ROUTING:
 726                 return set_input(client, route->input, state->aud_input);
 727
 728         case VIDIOC_INT_G_AUDIO_ROUTING:
 729                 if (state->is_cx25836)
 730                         return -EINVAL;
 731                 route->input = state->aud_input;
 732                 route->output = 0;
 733                 break;
 734
 735         case VIDIOC_INT_S_AUDIO_ROUTING:
 736                 if (state->is_cx25836)
 737                         return -EINVAL;
 738                 return set_input(client, state->vid_input, route->input);
 739
 740         case VIDIOC_S_FREQUENCY:
 741                 if (!state->is_cx25836) {
 742                         input_change(client);
 743                 }
 744                 break;
 745
 746         case VIDIOC_G_TUNER:
 747         {
 748                 u8 vpres = cx25840_read(client, 0x40e) & 0x20;
 749                 u8 mode;
 750                 int val = 0;
 751
 752                 if (state->radio)
 753                         break;
 754
 755                 vt->signal = vpres ? 0xffff : 0x0;
 756                 if (state->is_cx25836)
 757                         break;
 758
 759                 vt->capability |=
 760                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
 761                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
 762
 763                 mode = cx25840_read(client, 0x804);
 764
 765                 /* get rxsubchans and audmode */
 766                 if ((mode & 0xf) == 1)
 767                         val |= V4L2_TUNER_SUB_STEREO;
 768                 else
 769                         val |= V4L2_TUNER_SUB_MONO;
 770
 771                 if (mode == 2 || mode == 4)
 772                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 773
 774                 if (mode & 0x10)
 775                         val |= V4L2_TUNER_SUB_SAP;
 776
 777                 vt->rxsubchans = val;
 778                 vt->audmode = state->audmode;
 779                 break;
 780         }
 781
 782         case VIDIOC_S_TUNER:
 783                 if (state->radio || state->is_cx25836)
 784                         break;
 785
 786                 switch (vt->audmode) {
 787                 case V4L2_TUNER_MODE_MONO:
 788                         /* mono      -> mono
 789                            stereo    -> mono
 790                            bilingual -> lang1 */
 791                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
 792                         break;
 793                 case V4L2_TUNER_MODE_STEREO:
 794                 case V4L2_TUNER_MODE_LANG1:
 795                         /* mono      -> mono
 796                            stereo    -> stereo
 797                            bilingual -> lang1 */
 798                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
 799                         break;
 800                 case V4L2_TUNER_MODE_LANG1_LANG2:
 801                         /* mono      -> mono
 802                            stereo    -> stereo
 803                            bilingual -> lang1/lang2 */
 804                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
 805                         break;
 806                 case V4L2_TUNER_MODE_LANG2:
 807                         /* mono      -> mono
 808                            stereo    -> stereo
 809                            bilingual -> lang2 */
 810                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
 811                         break;
 812                 default:
 813                         return -EINVAL;
 814                 }
 815                 state->audmode = vt->audmode;
 816                 break;
 817
 818         case VIDIOC_G_FMT:
 819                 return get_v4lfmt(client, (struct v4l2_format *)arg);
 820
 821         case VIDIOC_S_FMT:
 822                 return set_v4lfmt(client, (struct v4l2_format *)arg);
 823
 824         case VIDIOC_INT_RESET:
 825                 if (state->is_cx25836)
 826                         cx25836_initialize(client);
 827                 else
 828                         cx25840_initialize(client, 0);
 829                 break;
 830
 831         case VIDIOC_G_CHIP_IDENT:
 832                 return v4l2_chip_ident_i2c_client(client, arg, state->id, state->rev);
 833
 834         default:
 835                 return -EINVAL;
 836         }
 837
 838         return 0;
 839 }
 840
 841 /* ----------------------------------------------------------------------- */
 842
 843 static struct i2c_driver i2c_driver_cx25840;
 844
 845 static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
 846                                  int kind)
 847 {
 848         struct i2c_client *client;
 849         struct cx25840_state *state;
 850         u32 id;
 851         u16 device_id;
 852
 853         /* Check if the adapter supports the needed features
 854          * Not until kernel version 2.6.11 did the bit-algo
 855          * correctly report that it would do an I2C-level xfer */
 856         if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
 857                 return 0;
 858
 859         state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
 860         if (state == 0)
 861                 return -ENOMEM;
 862
 863         client = &state->c;
 864         client->addr = address;
 865         client->adapter = adapter;
 866         client->driver = &i2c_driver_cx25840;
 867         snprintf(client->name, sizeof(client->name) - 1, "cx25840");
 868
 869         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", address << 1);
 870
 871         device_id = cx25840_read(client, 0x101) << 8;
 872         device_id |= cx25840_read(client, 0x100);
 873
 874         /* The high byte of the device ID should be
 875          * 0x83 for the cx2583x and 0x84 for the cx2584x */
 876         if ((device_id & 0xff00) == 0x8300) {
 877                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
 878                 state->is_cx25836 = 1;
 879         }
 880         else if ((device_id & 0xff00) == 0x8400) {
 881                 id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
 882                 state->is_cx25836 = 0;
 883         }
 884         else {
 885                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
 886                 kfree(state);
 887                 return 0;
 888         }
 889
 890         /* Note: revision '(device_id & 0x0f) == 2' was never built. The
 891            marking skips from 0x1 == 22 to 0x3 == 23. */
 892         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
 893                     (device_id & 0xfff0) >> 4,
 894                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : (device_id & 0x0f),
 895                     address << 1, adapter->name);
 896
 897         i2c_set_clientdata(client, state);
 898         state->vid_input = CX25840_COMPOSITE7;
 899         state->aud_input = CX25840_AUDIO8;
 900         state->audclk_freq = 48000;
 901         state->pvr150_workaround = 0;
 902         state->audmode = V4L2_TUNER_MODE_LANG1;
 903         state->vbi_line_offset = 8;
 904         state->id = id;
 905         state->rev = device_id;
 906
 907         i2c_attach_client(client);
 908
 909         if (state->is_cx25836)
 910                 cx25836_initialize(client);
 911         else
 912                 cx25840_initialize(client, 1);
 913
 914         return 0;
 915 }
 916
 917 static int cx25840_attach_adapter(struct i2c_adapter *adapter)
 918 {
 919         if (adapter->class & I2C_CLASS_TV_ANALOG)
 920                 return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
 921         return 0;
 922 }
 923
 924 static int cx25840_detach_client(struct i2c_client *client)
 925 {
 926         struct cx25840_state *state = i2c_get_clientdata(client);
 927         int err;
 928
 929         err = i2c_detach_client(client);
 930         if (err) {
 931                 return err;
 932         }
 933
 934         kfree(state);
 935
 936         return 0;
 937 }
 938
 939 /* ----------------------------------------------------------------------- */
 940
 941 static struct i2c_driver i2c_driver_cx25840 = {
 942         .driver = {
 943                 .name = "cx25840",
 944         },
 945         .id = I2C_DRIVERID_CX25840,
 946         .attach_adapter = cx25840_attach_adapter,
 947         .detach_client = cx25840_detach_client,
 948         .command = cx25840_command,
 949 };
 950
 951
 952 static int __init m__init(void)
 953 {
 954         return i2c_add_driver(&i2c_driver_cx25840);
 955 }
 956
 957 static void __exit m__exit(void)
 958 {
 959         i2c_del_driver(&i2c_driver_cx25840);
 960 }
 961
 962 module_init(m__init);
 963 module_exit(m__exit);
 964
 965 /* ----------------------------------------------------------------------- */
 966
 967 static void log_video_status(struct i2c_client *client)
 968 {
 969         static const char *const fmt_strs[] = {
 970                 "0x0",
 971                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 972                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 973                 "0x9", "0xA", "0xB",
 974                 "SECAM",
 975                 "0xD", "0xE", "0xF"
 976         };
 977
 978         struct cx25840_state *state = i2c_get_clientdata(client);
 979         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
 980         u8 gen_stat1 = cx25840_read(client, 0x40d);
 981         u8 gen_stat2 = cx25840_read(client, 0x40e);
 982         int vid_input = state->vid_input;
 983
 984         v4l_info(client, "Video signal:              %spresent\n",
 985                     (gen_stat2 & 0x20) ? "" : "not ");
 986         v4l_info(client, "Detected format:           %s\n",
 987                     fmt_strs[gen_stat1 & 0xf]);
 988
 989         v4l_info(client, "Specified standard:        %s\n",
 990                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
 991
 992         if (vid_input >= CX25840_COMPOSITE1 &&
 993             vid_input <= CX25840_COMPOSITE8) {
 994                 v4l_info(client, "Specified video input:     Composite %d\n",
 995                         vid_input - CX25840_COMPOSITE1 + 1);
 996         } else {
 997                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
 998                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
 999         }
1000
1001         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
1002 }
1003
1004 /* ----------------------------------------------------------------------- */
1005
1006 static void log_audio_status(struct i2c_client *client)
1007 {
1008         struct cx25840_state *state = i2c_get_clientdata(client);
1009         u8 download_ctl = cx25840_read(client, 0x803);
1010         u8 mod_det_stat0 = cx25840_read(client, 0x804);
1011         u8 mod_det_stat1 = cx25840_read(client, 0x805);
1012         u8 audio_config = cx25840_read(client, 0x808);
1013         u8 pref_mode = cx25840_read(client, 0x809);
1014         u8 afc0 = cx25840_read(client, 0x80b);
1015         u8 mute_ctl = cx25840_read(client, 0x8d3);
1016         int aud_input = state->aud_input;
1017         char *p;
1018
1019         switch (mod_det_stat0) {
1020         case 0x00: p = "mono"; break;
1021         case 0x01: p = "stereo"; break;
1022         case 0x02: p = "dual"; break;
1023         case 0x04: p = "tri"; break;
1024         case 0x10: p = "mono with SAP"; break;
1025         case 0x11: p = "stereo with SAP"; break;
1026         case 0x12: p = "dual with SAP"; break;
1027         case 0x14: p = "tri with SAP"; break;
1028         case 0xfe: p = "forced mode"; break;
1029         default: p = "not defined";
1030         }
1031         v4l_info(client, "Detected audio mode:       %s\n", p);
1032
1033         switch (mod_det_stat1) {
1034         case 0x00: p = "not defined"; break;
1035         case 0x01: p = "EIAJ"; break;
1036         case 0x02: p = "A2-M"; break;
1037         case 0x03: p = "A2-BG"; break;
1038         case 0x04: p = "A2-DK1"; break;
1039         case 0x05: p = "A2-DK2"; break;
1040         case 0x06: p = "A2-DK3"; break;
1041         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
1042         case 0x08: p = "AM-L"; break;
1043         case 0x09: p = "NICAM-BG"; break;
1044         case 0x0a: p = "NICAM-DK"; break;
1045         case 0x0b: p = "NICAM-I"; break;
1046         case 0x0c: p = "NICAM-L"; break;
1047         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
1048         case 0x0e: p = "IF FM Radio"; break;
1049         case 0x0f: p = "BTSC"; break;
1050         case 0x10: p = "high-deviation FM"; break;
1051         case 0x11: p = "very high-deviation FM"; break;
1052         case 0xfd: p = "unknown audio standard"; break;
1053         case 0xfe: p = "forced audio standard"; break;
1054         case 0xff: p = "no detected audio standard"; break;
1055         default: p = "not defined";
1056         }
1057         v4l_info(client, "Detected audio standard:   %s\n", p);
1058         v4l_info(client, "Audio muted:               %s\n",
1059                     (mute_ctl & 0x2) ? "yes" : "no");
1060         v4l_info(client, "Audio microcontroller:     %s\n",
1061                     (download_ctl & 0x10) ? "running" : "stopped");
1062
1063         switch (audio_config >> 4) {
1064         case 0x00: p = "undefined"; break;
1065         case 0x01: p = "BTSC"; break;
1066         case 0x02: p = "EIAJ"; break;
1067         case 0x03: p = "A2-M"; break;
1068         case 0x04: p = "A2-BG"; break;
1069         case 0x05: p = "A2-DK1"; break;
1070         case 0x06: p = "A2-DK2"; break;
1071         case 0x07: p = "A2-DK3"; break;
1072         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
1073         case 0x09: p = "AM-L"; break;
1074         case 0x0a: p = "NICAM-BG"; break;
1075         case 0x0b: p = "NICAM-DK"; break;
1076         case 0x0c: p = "NICAM-I"; break;
1077         case 0x0d: p = "NICAM-L"; break;
1078         case 0x0e: p = "FM radio"; break;
1079         case 0x0f: p = "automatic detection"; break;
1080         default: p = "undefined";
1081         }
1082         v4l_info(client, "Configured audio standard: %s\n", p);
1083
1084         if ((audio_config >> 4) < 0xF) {
1085                 switch (audio_config & 0xF) {
1086                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
1087                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
1088                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
1089                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
1090                 case 0x04: p = "STEREO"; break;
1091                 case 0x05: p = "DUAL1 (AB)"; break;
1092                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
1093                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
1094                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
1095                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
1096                 case 0x0a: p = "SAP"; break;
1097                 default: p = "undefined";
1098                 }
1099                 v4l_info(client, "Configured audio mode:     %s\n", p);
1100         } else {
1101                 switch (audio_config & 0xF) {
1102                 case 0x00: p = "BG"; break;
1103                 case 0x01: p = "DK1"; break;
1104                 case 0x02: p = "DK2"; break;
1105                 case 0x03: p = "DK3"; break;
1106                 case 0x04: p = "I"; break;
1107                 case 0x05: p = "L"; break;
1108                 case 0x06: p = "BTSC"; break;
1109                 case 0x07: p = "EIAJ"; break;
1110                 case 0x08: p = "A2-M"; break;
1111                 case 0x09: p = "FM Radio"; break;
1112                 case 0x0f: p = "automatic standard and mode detection"; break;
1113                 default: p = "undefined";
1114                 }
1115                 v4l_info(client, "Configured audio system:   %s\n", p);
1116         }
1117
1118         if (aud_input) {
1119                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
1120         } else {
1121                 v4l_info(client, "Specified audio input:     External\n");
1122         }
1123
1124         switch (pref_mode & 0xf) {
1125         case 0: p = "mono/language A"; break;
1126         case 1: p = "language B"; break;
1127         case 2: p = "language C"; break;
1128         case 3: p = "analog fallback"; break;
1129         case 4: p = "stereo"; break;
1130         case 5: p = "language AC"; break;
1131         case 6: p = "language BC"; break;
1132         case 7: p = "language AB"; break;
1133         default: p = "undefined";
1134         }
1135         v4l_info(client, "Preferred audio mode:      %s\n", p);
1136
1137         if ((audio_config & 0xf) == 0xf) {
1138                 switch ((afc0 >> 3) & 0x3) {
1139                 case 0: p = "system DK"; break;
1140                 case 1: p = "system L"; break;
1141                 case 2: p = "autodetect"; break;
1142                 default: p = "undefined";
1143                 }
1144                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
1145
1146                 switch (afc0 & 0x7) {
1147                 case 0: p = "chroma"; break;
1148                 case 1: p = "BTSC"; break;
1149                 case 2: p = "EIAJ"; break;
1150                 case 3: p = "A2-M"; break;
1151                 case 4: p = "autodetect"; break;
1152                 default: p = "undefined";
1153                 }
1154                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
1155         }
1156 }