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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 <media/v4l2-common.h>
  38 #include <media/cx25840.h>
  39
  40 #include "cx25840-core.h"
  41
  42 MODULE_DESCRIPTION("Conexant CX25840 audio/video decoder driver");
  43 MODULE_AUTHOR("Ulf Eklund, Chris Kennedy, Hans Verkuil, Tyler Trafford");
  44 MODULE_LICENSE("GPL");
  45
  46 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
  47
  48
  49 int cx25840_debug;
  50
  51 module_param_named(debug,cx25840_debug, int, 0644);
  52
  53 MODULE_PARM_DESC(debug, "Debugging messages [0=Off (default) 1=On]");
  54
  55 I2C_CLIENT_INSMOD;
  56
  57 /* ----------------------------------------------------------------------- */
  58
  59 int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
  60 {
  61         u8 buffer[3];
  62         buffer[0] = addr >> 8;
  63         buffer[1] = addr & 0xff;
  64         buffer[2] = value;
  65         return i2c_master_send(client, buffer, 3);
  66 }
  67
  68 int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
  69 {
  70         u8 buffer[6];
  71         buffer[0] = addr >> 8;
  72         buffer[1] = addr & 0xff;
  73         buffer[2] = value >> 24;
  74         buffer[3] = (value >> 16) & 0xff;
  75         buffer[4] = (value >> 8) & 0xff;
  76         buffer[5] = value & 0xff;
  77         return i2c_master_send(client, buffer, 6);
  78 }
  79
  80 u8 cx25840_read(struct i2c_client * client, u16 addr)
  81 {
  82         u8 buffer[2];
  83         buffer[0] = addr >> 8;
  84         buffer[1] = addr & 0xff;
  85
  86         if (i2c_master_send(client, buffer, 2) < 2)
  87                 return 0;
  88
  89         if (i2c_master_recv(client, buffer, 1) < 1)
  90                 return 0;
  91
  92         return buffer[0];
  93 }
  94
  95 u32 cx25840_read4(struct i2c_client * client, u16 addr)
  96 {
  97         u8 buffer[4];
  98         buffer[0] = addr >> 8;
  99         buffer[1] = addr & 0xff;
 100
 101         if (i2c_master_send(client, buffer, 2) < 2)
 102                 return 0;
 103
 104         if (i2c_master_recv(client, buffer, 4) < 4)
 105                 return 0;
 106
 107         return (buffer[3] << 24) | (buffer[2] << 16) |
 108             (buffer[1] << 8) | buffer[0];
 109 }
 110
 111 int cx25840_and_or(struct i2c_client *client, u16 addr, unsigned and_mask,
 112                    u8 or_value)
 113 {
 114         return cx25840_write(client, addr,
 115                              (cx25840_read(client, addr) & and_mask) |
 116                              or_value);
 117 }
 118
 119 /* ----------------------------------------------------------------------- */
 120
 121 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 122                                                 enum cx25840_audio_input aud_input);
 123 static void log_audio_status(struct i2c_client *client);
 124 static void log_video_status(struct i2c_client *client);
 125
 126 /* ----------------------------------------------------------------------- */
 127
 128 static void init_dll1(struct i2c_client *client)
 129 {
 130         /* This is the Hauppauge sequence used to
 131          * initialize the Delay Lock Loop 1 (ADC DLL). */
 132         cx25840_write(client, 0x159, 0x23);
 133         cx25840_write(client, 0x15a, 0x87);
 134         cx25840_write(client, 0x15b, 0x06);
 135         cx25840_write(client, 0x159, 0xe1);
 136         cx25840_write(client, 0x15a, 0x86);
 137         cx25840_write(client, 0x159, 0xe0);
 138         cx25840_write(client, 0x159, 0xe1);
 139         cx25840_write(client, 0x15b, 0x10);
 140 }
 141
 142 static void init_dll2(struct i2c_client *client)
 143 {
 144         /* This is the Hauppauge sequence used to
 145          * initialize the Delay Lock Loop 2 (ADC DLL). */
 146         cx25840_write(client, 0x15d, 0xe3);
 147         cx25840_write(client, 0x15e, 0x86);
 148         cx25840_write(client, 0x15f, 0x06);
 149         cx25840_write(client, 0x15d, 0xe1);
 150         cx25840_write(client, 0x15d, 0xe0);
 151         cx25840_write(client, 0x15d, 0xe1);
 152 }
 153
 154 static void cx25836_initialize(struct i2c_client *client)
 155 {
 156         /* reset configuration is described on page 3-77 of the CX25836 datasheet */
 157         /* 2. */
 158         cx25840_and_or(client, 0x000, ~0x01, 0x01);
 159         cx25840_and_or(client, 0x000, ~0x01, 0x00);
 160         /* 3a. */
 161         cx25840_and_or(client, 0x15a, ~0x70, 0x00);
 162         /* 3b. */
 163         cx25840_and_or(client, 0x15b, ~0x1e, 0x06);
 164         /* 3c. */
 165         cx25840_and_or(client, 0x159, ~0x02, 0x02);
 166         /* 3d. */
 167         /* There should be a 10-us delay here, but since the
 168            i2c bus already has a 10-us delay we don't need to do
 169            anything */
 170         /* 3e. */
 171         cx25840_and_or(client, 0x159, ~0x02, 0x00);
 172         /* 3f. */
 173         cx25840_and_or(client, 0x159, ~0xc0, 0xc0);
 174         /* 3g. */
 175         cx25840_and_or(client, 0x159, ~0x01, 0x00);
 176         cx25840_and_or(client, 0x159, ~0x01, 0x01);
 177         /* 3h. */
 178         cx25840_and_or(client, 0x15b, ~0x1e, 0x10);
 179 }
 180
 181 static void cx25840_initialize(struct i2c_client *client, int loadfw)
 182 {
 183         struct cx25840_state *state = i2c_get_clientdata(client);
 184
 185         /* datasheet startup in numbered steps, refer to page 3-77 */
 186         /* 2. */
 187         cx25840_and_or(client, 0x803, ~0x10, 0x00);
 188         /* The default of this register should be 4, but I get 0 instead.
 189          * Set this register to 4 manually. */
 190         cx25840_write(client, 0x000, 0x04);
 191         /* 3. */
 192         init_dll1(client);
 193         init_dll2(client);
 194         cx25840_write(client, 0x136, 0x0a);
 195         /* 4. */
 196         cx25840_write(client, 0x13c, 0x01);
 197         cx25840_write(client, 0x13c, 0x00);
 198         /* 5. */
 199         if (loadfw)
 200                 cx25840_loadfw(client);
 201         /* 6. */
 202         cx25840_write(client, 0x115, 0x8c);
 203         cx25840_write(client, 0x116, 0x07);
 204         cx25840_write(client, 0x118, 0x02);
 205         /* 7. */
 206         cx25840_write(client, 0x4a5, 0x80);
 207         cx25840_write(client, 0x4a5, 0x00);
 208         cx25840_write(client, 0x402, 0x00);
 209         /* 8. */
 210         cx25840_and_or(client, 0x401, ~0x18, 0);
 211         cx25840_and_or(client, 0x4a2, ~0x10, 0x10);
 212         /* steps 8c and 8d are done in change_input() */
 213         /* 10. */
 214         cx25840_write(client, 0x8d3, 0x1f);
 215         cx25840_write(client, 0x8e3, 0x03);
 216
 217         cx25840_vbi_setup(client);
 218
 219         /* trial and error says these are needed to get audio */
 220         cx25840_write(client, 0x914, 0xa0);
 221         cx25840_write(client, 0x918, 0xa0);
 222         cx25840_write(client, 0x919, 0x01);
 223
 224         /* stereo prefered */
 225         cx25840_write(client, 0x809, 0x04);
 226         /* AC97 shift */
 227         cx25840_write(client, 0x8cf, 0x0f);
 228
 229         /* (re)set input */
 230         set_input(client, state->vid_input, state->aud_input);
 231
 232         /* start microcontroller */
 233         cx25840_and_or(client, 0x803, ~0x10, 0x10);
 234 }
 235
 236 /* ----------------------------------------------------------------------- */
 237
 238 static void input_change(struct i2c_client *client)
 239 {
 240         struct cx25840_state *state = i2c_get_clientdata(client);
 241         v4l2_std_id std = cx25840_get_v4lstd(client);
 242
 243         /* Follow step 8c and 8d of section 3.16 in the cx25840 datasheet */
 244         if (std & V4L2_STD_SECAM) {
 245                 cx25840_write(client, 0x402, 0);
 246         }
 247         else {
 248                 cx25840_write(client, 0x402, 0x04);
 249                 cx25840_write(client, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
 250         }
 251         cx25840_and_or(client, 0x401, ~0x60, 0);
 252         cx25840_and_or(client, 0x401, ~0x60, 0x60);
 253
 254         if (std & V4L2_STD_525_60) {
 255                 /* Certain Hauppauge PVR150 models have a hardware bug
 256                    that causes audio to drop out. For these models the
 257                    audio standard must be set explicitly.
 258                    To be precise: it affects cards with tuner models
 259                    85, 99 and 112 (model numbers from tveeprom). */
 260                 int hw_fix = state->pvr150_workaround;
 261
 262                 if (std == V4L2_STD_NTSC_M_JP) {
 263                         /* Japan uses EIAJ audio standard */
 264                         cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
 265                 } else if (std == V4L2_STD_NTSC_M_KR) {
 266                         /* South Korea uses A2 audio standard */
 267                         cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
 268                 } else {
 269                         /* Others use the BTSC audio standard */
 270                         cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
 271                 }
 272                 cx25840_write(client, 0x80b, 0x00);
 273         } else if (std & V4L2_STD_PAL) {
 274                 /* Follow tuner change procedure for PAL */
 275                 cx25840_write(client, 0x808, 0xff);
 276                 cx25840_write(client, 0x80b, 0x10);
 277         } else if (std & V4L2_STD_SECAM) {
 278                 /* Select autodetect for SECAM */
 279                 cx25840_write(client, 0x808, 0xff);
 280                 cx25840_write(client, 0x80b, 0x10);
 281         }
 282
 283         if (cx25840_read(client, 0x803) & 0x10) {
 284                 /* restart audio decoder microcontroller */
 285                 cx25840_and_or(client, 0x803, ~0x10, 0x00);
 286                 cx25840_and_or(client, 0x803, ~0x10, 0x10);
 287         }
 288 }
 289
 290 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 291                                                 enum cx25840_audio_input aud_input)
 292 {
 293         struct cx25840_state *state = i2c_get_clientdata(client);
 294         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
 295                            vid_input <= CX25840_COMPOSITE8);
 296         u8 reg;
 297
 298         v4l_dbg(1, cx25840_debug, client, "decoder set video input %d, audio input %d\n",
 299                         vid_input, aud_input);
 300
 301         if (is_composite) {
 302                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
 303         } else {
 304                 int luma = vid_input & 0xf0;
 305                 int chroma = vid_input & 0xf00;
 306
 307                 if ((vid_input & ~0xff0) ||
 308                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
 309                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
 310                         v4l_err(client, "0x%04x is not a valid video input!\n", vid_input);
 311                         return -EINVAL;
 312                 }
 313                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
 314                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
 315                         reg &= 0x3f;
 316                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
 317                 } else {
 318                         reg &= 0xcf;
 319                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
 320                 }
 321         }
 322
 323         switch (aud_input) {
 324         case CX25840_AUDIO_SERIAL:
 325                 /* do nothing, use serial audio input */
 326                 break;
 327         case CX25840_AUDIO4: reg &= ~0x30; break;
 328         case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
 329         case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
 330         case CX25840_AUDIO7: reg &= ~0xc0; break;
 331         case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
 332
 333         default:
 334                 v4l_err(client, "0x%04x is not a valid audio input!\n", aud_input);
 335                 return -EINVAL;
 336         }
 337
 338         cx25840_write(client, 0x103, reg);
 339         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
 340         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
 341         /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
 342         cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
 343         /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
 344         if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
 345                 cx25840_and_or(client, 0x102, ~0x4, 4);
 346         else
 347                 cx25840_and_or(client, 0x102, ~0x4, 0);
 348
 349         state->vid_input = vid_input;
 350         state->aud_input = aud_input;
 351         if (!state->is_cx25836) {
 352                 cx25840_audio_set_path(client);
 353                 input_change(client);
 354         }
 355         return 0;
 356 }
 357
 358 /* ----------------------------------------------------------------------- */
 359
 360 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
 361 {
 362         u8 fmt=0;       /* zero is autodetect */
 363
 364         /* First tests should be against specific std */
 365         if (std == V4L2_STD_NTSC_M_JP) {
 366                 fmt=0x2;
 367         } else if (std == V4L2_STD_NTSC_443) {
 368                 fmt=0x3;
 369         } else if (std == V4L2_STD_PAL_M) {
 370                 fmt=0x5;
 371         } else if (std == V4L2_STD_PAL_N) {
 372                 fmt=0x6;
 373         } else if (std == V4L2_STD_PAL_Nc) {
 374                 fmt=0x7;
 375         } else if (std == V4L2_STD_PAL_60) {
 376                 fmt=0x8;
 377         } else {
 378                 /* Then, test against generic ones */
 379                 if (std & V4L2_STD_NTSC) {
 380                         fmt=0x1;
 381                 } else if (std & V4L2_STD_PAL) {
 382                         fmt=0x4;
 383                 } else if (std & V4L2_STD_SECAM) {
 384                         fmt=0xc;
 385                 }
 386         }
 387
 388         v4l_dbg(1, cx25840_debug, client, "changing video std to fmt %i\n",fmt);
 389
 390         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
 391            Without this PAL may display a vertical ghosting effect.
 392            This happens for example with the Yuan MPC622. */
 393         if (fmt >= 4 && fmt < 8) {
 394                 /* Set format to NTSC-M */
 395                 cx25840_and_or(client, 0x400, ~0xf, 1);
 396                 /* Turn off LCOMB */
 397                 cx25840_and_or(client, 0x47b, ~6, 0);
 398         }
 399         cx25840_and_or(client, 0x400, ~0xf, fmt);
 400         cx25840_vbi_setup(client);
 401         return 0;
 402 }
 403
 404 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
 405 {
 406         struct cx25840_state *state = i2c_get_clientdata(client);
 407         /* check VID_FMT_SEL first */
 408         u8 fmt = cx25840_read(client, 0x400) & 0xf;
 409
 410         if (!fmt) {
 411                 /* check AFD_FMT_STAT if set to autodetect */
 412                 fmt = cx25840_read(client, 0x40d) & 0xf;
 413         }
 414
 415         switch (fmt) {
 416         case 0x1:
 417         {
 418                 /* if the audio std is A2-M, then this is the South Korean
 419                    NTSC standard */
 420                 if (!state->is_cx25836 && cx25840_read(client, 0x805) == 2)
 421                         return V4L2_STD_NTSC_M_KR;
 422                 return V4L2_STD_NTSC_M;
 423         }
 424         case 0x2: return V4L2_STD_NTSC_M_JP;
 425         case 0x3: return V4L2_STD_NTSC_443;
 426         case 0x4: return V4L2_STD_PAL;
 427         case 0x5: return V4L2_STD_PAL_M;
 428         case 0x6: return V4L2_STD_PAL_N;
 429         case 0x7: return V4L2_STD_PAL_Nc;
 430         case 0x8: return V4L2_STD_PAL_60;
 431         case 0xc: return V4L2_STD_SECAM;
 432         default: return V4L2_STD_UNKNOWN;
 433         }
 434 }
 435
 436 /* ----------------------------------------------------------------------- */
 437
 438 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 439 {
 440         struct cx25840_state *state = i2c_get_clientdata(client);
 441
 442         switch (ctrl->id) {
 443         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 444                 state->pvr150_workaround = ctrl->value;
 445                 set_input(client, state->vid_input, state->aud_input);
 446                 break;
 447
 448         case V4L2_CID_BRIGHTNESS:
 449                 if (ctrl->value < 0 || ctrl->value > 255) {
 450                         v4l_err(client, "invalid brightness setting %d\n",
 451                                     ctrl->value);
 452                         return -ERANGE;
 453                 }
 454
 455                 cx25840_write(client, 0x414, ctrl->value - 128);
 456                 break;
 457
 458         case V4L2_CID_CONTRAST:
 459                 if (ctrl->value < 0 || ctrl->value > 127) {
 460                         v4l_err(client, "invalid contrast setting %d\n",
 461                                     ctrl->value);
 462                         return -ERANGE;
 463                 }
 464
 465                 cx25840_write(client, 0x415, ctrl->value << 1);
 466                 break;
 467
 468         case V4L2_CID_SATURATION:
 469                 if (ctrl->value < 0 || ctrl->value > 127) {
 470                         v4l_err(client, "invalid saturation setting %d\n",
 471                                     ctrl->value);
 472                         return -ERANGE;
 473                 }
 474
 475                 cx25840_write(client, 0x420, ctrl->value << 1);
 476                 cx25840_write(client, 0x421, ctrl->value << 1);
 477                 break;
 478
 479         case V4L2_CID_HUE:
 480                 if (ctrl->value < -127 || ctrl->value > 127) {
 481                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
 482                         return -ERANGE;
 483                 }
 484
 485                 cx25840_write(client, 0x422, ctrl->value);
 486                 break;
 487
 488         case V4L2_CID_AUDIO_VOLUME:
 489         case V4L2_CID_AUDIO_BASS:
 490         case V4L2_CID_AUDIO_TREBLE:
 491         case V4L2_CID_AUDIO_BALANCE:
 492         case V4L2_CID_AUDIO_MUTE:
 493                 if (state->is_cx25836)
 494                         return -EINVAL;
 495                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 496
 497         default:
 498                 return -EINVAL;
 499         }
 500
 501         return 0;
 502 }
 503
 504 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 505 {
 506         struct cx25840_state *state = i2c_get_clientdata(client);
 507
 508         switch (ctrl->id) {
 509         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 510                 ctrl->value = state->pvr150_workaround;
 511                 break;
 512         case V4L2_CID_BRIGHTNESS:
 513                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
 514                 break;
 515         case V4L2_CID_CONTRAST:
 516                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 517                 break;
 518         case V4L2_CID_SATURATION:
 519                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 520                 break;
 521         case V4L2_CID_HUE:
 522                 ctrl->value = (s8)cx25840_read(client, 0x422);
 523                 break;
 524         case V4L2_CID_AUDIO_VOLUME:
 525         case V4L2_CID_AUDIO_BASS:
 526         case V4L2_CID_AUDIO_TREBLE:
 527         case V4L2_CID_AUDIO_BALANCE:
 528         case V4L2_CID_AUDIO_MUTE:
 529                 if (state->is_cx25836)
 530                         return -EINVAL;
 531                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 532         default:
 533                 return -EINVAL;
 534         }
 535
 536         return 0;
 537 }
 538
 539 /* ----------------------------------------------------------------------- */
 540
 541 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 542 {
 543         switch (fmt->type) {
 544         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 545                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 546         default:
 547                 return -EINVAL;
 548         }
 549
 550         return 0;
 551 }
 552
 553 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 554 {
 555         struct v4l2_pix_format *pix;
 556         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 557         int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);
 558
 559         switch (fmt->type) {
 560         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 561                 pix = &(fmt->fmt.pix);
 562
 563                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 564                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 565
 566                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 567                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 568
 569                 Vlines = pix->height + (is_pal ? 4 : 7);
 570
 571                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 572                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 573                         v4l_err(client, "%dx%d is not a valid size!\n",
 574                                     pix->width, pix->height);
 575                         return -ERANGE;
 576                 }
 577
 578                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 579                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 580                 VSC &= 0x1fff;
 581
 582                 if (pix->width >= 385)
 583                         filter = 0;
 584                 else if (pix->width > 192)
 585                         filter = 1;
 586                 else if (pix->width > 96)
 587                         filter = 2;
 588                 else
 589                         filter = 3;
 590
 591                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
 592                             pix->width, pix->height, HSC, VSC);
 593
 594                 /* HSCALE=HSC */
 595                 cx25840_write(client, 0x418, HSC & 0xff);
 596                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 597                 cx25840_write(client, 0x41a, HSC >> 16);
 598                 /* VSCALE=VSC */
 599                 cx25840_write(client, 0x41c, VSC & 0xff);
 600                 cx25840_write(client, 0x41d, VSC >> 8);
 601                 /* VS_INTRLACE=1 VFILT=filter */
 602                 cx25840_write(client, 0x41e, 0x8 | filter);
 603                 break;
 604
 605         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 606                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 607
 608         case V4L2_BUF_TYPE_VBI_CAPTURE:
 609                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 610
 611         default:
 612                 return -EINVAL;
 613         }
 614
 615         return 0;
 616 }
 617
 618 /* ----------------------------------------------------------------------- */
 619
 620 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 621                            void *arg)
 622 {
 623         struct cx25840_state *state = i2c_get_clientdata(client);
 624         struct v4l2_tuner *vt = arg;
 625         struct v4l2_routing *route = arg;
 626
 627         switch (cmd) {
 628 #ifdef CONFIG_VIDEO_ADV_DEBUG
 629         /* ioctls to allow direct access to the
 630          * cx25840 registers for testing */
 631         case VIDIOC_INT_G_REGISTER:
 632         {
 633                 struct v4l2_register *reg = arg;
 634
 635                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 636                         return -EINVAL;
 637                 reg->val = cx25840_read(client, reg->reg & 0x0fff);
 638                 break;
 639         }
 640
 641         case VIDIOC_INT_S_REGISTER:
 642         {
 643                 struct v4l2_register *reg = arg;
 644
 645                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 646                         return -EINVAL;
 647                 if (!capable(CAP_SYS_ADMIN))
 648                         return -EPERM;
 649                 cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 650                 break;
 651         }
 652 #endif
 653
 654         case VIDIOC_INT_DECODE_VBI_LINE:
 655                 return cx25840_vbi(client, cmd, arg);
 656
 657         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 658                 return cx25840_audio(client, cmd, arg);
 659
 660         case VIDIOC_STREAMON:
 661                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
 662                 cx25840_write(client, 0x115, state->is_cx25836 ? 0x0c : 0x8c);
 663                 cx25840_write(client, 0x116, state->is_cx25836 ? 0x04 : 0x07);
 664                 break;
 665
 666         case VIDIOC_STREAMOFF:
 667                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
 668                 cx25840_write(client, 0x115, 0x00);
 669                 cx25840_write(client, 0x116, 0x00);
 670                 break;
 671
 672         case VIDIOC_LOG_STATUS:
 673                 log_video_status(client);
 674                 if (!state->is_cx25836)
 675                         log_audio_status(client);
 676                 break;
 677
 678         case VIDIOC_G_CTRL:
 679                 return get_v4lctrl(client, (struct v4l2_control *)arg);
 680
 681         case VIDIOC_S_CTRL:
 682                 return set_v4lctrl(client, (struct v4l2_control *)arg);
 683
 684         case VIDIOC_QUERYCTRL:
 685         {
 686                 struct v4l2_queryctrl *qc = arg;
 687
 688                 switch (qc->id) {
 689                         case V4L2_CID_BRIGHTNESS:
 690                         case V4L2_CID_CONTRAST:
 691                         case V4L2_CID_SATURATION:
 692                         case V4L2_CID_HUE:
 693                                 return v4l2_ctrl_query_fill_std(qc);
 694                         default:
 695                                 break;
 696                 }
 697                 if (state->is_cx25836)
 698                         return -EINVAL;
 699
 700                 switch (qc->id) {
 701                         case V4L2_CID_AUDIO_VOLUME:
 702                         case V4L2_CID_AUDIO_MUTE:
 703                         case V4L2_CID_AUDIO_BALANCE:
 704                         case V4L2_CID_AUDIO_BASS:
 705                         case V4L2_CID_AUDIO_TREBLE:
 706                                 return v4l2_ctrl_query_fill_std(qc);
 707                         default:
 708                                 return -EINVAL;
 709                 }
 710                 return -EINVAL;
 711         }
 712
 713         case VIDIOC_G_STD:
 714                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
 715                 break;
 716
 717         case VIDIOC_S_STD:
 718                 state->radio = 0;
 719                 return set_v4lstd(client, *(v4l2_std_id *)arg);
 720
 721         case AUDC_SET_RADIO:
 722                 state->radio = 1;
 723                 break;
 724
 725         case VIDIOC_INT_G_VIDEO_ROUTING:
 726                 route->input = state->vid_input;
 727                 route->output = 0;
 728                 break;
 729
 730         case VIDIOC_INT_S_VIDEO_ROUTING:
 731                 return set_input(client, route->input, state->aud_input);
 732
 733         case VIDIOC_INT_G_AUDIO_ROUTING:
 734                 if (state->is_cx25836)
 735                         return -EINVAL;
 736                 route->input = state->aud_input;
 737                 route->output = 0;
 738                 break;
 739
 740         case VIDIOC_INT_S_AUDIO_ROUTING:
 741                 if (state->is_cx25836)
 742                         return -EINVAL;
 743                 return set_input(client, state->vid_input, route->input);
 744
 745         case VIDIOC_S_FREQUENCY:
 746                 if (!state->is_cx25836) {
 747                         input_change(client);
 748                 }
 749                 break;
 750
 751         case VIDIOC_G_TUNER:
 752         {
 753                 u8 vpres = cx25840_read(client, 0x40e) & 0x20;
 754                 u8 mode;
 755                 int val = 0;
 756
 757                 if (state->radio)
 758                         break;
 759
 760                 vt->signal = vpres ? 0xffff : 0x0;
 761                 if (state->is_cx25836)
 762                         break;
 763
 764                 vt->capability |=
 765                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
 766                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
 767
 768                 mode = cx25840_read(client, 0x804);
 769
 770                 /* get rxsubchans and audmode */
 771                 if ((mode & 0xf) == 1)
 772                         val |= V4L2_TUNER_SUB_STEREO;
 773                 else
 774                         val |= V4L2_TUNER_SUB_MONO;
 775
 776                 if (mode == 2 || mode == 4)
 777                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 778
 779                 if (mode & 0x10)
 780                         val |= V4L2_TUNER_SUB_SAP;
 781
 782                 vt->rxsubchans = val;
 783                 vt->audmode = state->audmode;
 784                 break;
 785         }
 786
 787         case VIDIOC_S_TUNER:
 788                 if (state->radio || state->is_cx25836)
 789                         break;
 790
 791                 switch (vt->audmode) {
 792                 case V4L2_TUNER_MODE_MONO:
 793                         /* mono      -> mono
 794                            stereo    -> mono
 795                            bilingual -> lang1 */
 796                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
 797                         break;
 798                 case V4L2_TUNER_MODE_STEREO:
 799                 case V4L2_TUNER_MODE_LANG1:
 800                         /* mono      -> mono
 801                            stereo    -> stereo
 802                            bilingual -> lang1 */
 803                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
 804                         break;
 805                 case V4L2_TUNER_MODE_LANG1_LANG2:
 806                         /* mono      -> mono
 807                            stereo    -> stereo
 808                            bilingual -> lang1/lang2 */
 809                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
 810                         break;
 811                 case V4L2_TUNER_MODE_LANG2:
 812                         /* mono      -> mono
 813                            stereo    -> stereo
 814                            bilingual -> lang2 */
 815                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
 816                         break;
 817                 default:
 818                         return -EINVAL;
 819                 }
 820                 state->audmode = vt->audmode;
 821                 break;
 822
 823         case VIDIOC_G_FMT:
 824                 return get_v4lfmt(client, (struct v4l2_format *)arg);
 825
 826         case VIDIOC_S_FMT:
 827                 return set_v4lfmt(client, (struct v4l2_format *)arg);
 828
 829         case VIDIOC_INT_RESET:
 830                 if (state->is_cx25836)
 831                         cx25836_initialize(client);
 832                 else
 833                         cx25840_initialize(client, 0);
 834                 break;
 835
 836         case VIDIOC_INT_G_CHIP_IDENT:
 837                 *(enum v4l2_chip_ident *)arg = state->id;
 838                 break;
 839
 840         default:
 841                 return -EINVAL;
 842         }
 843
 844         return 0;
 845 }
 846
 847 /* ----------------------------------------------------------------------- */
 848
 849 static struct i2c_driver i2c_driver_cx25840;
 850
 851 static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
 852                                  int kind)
 853 {
 854         struct i2c_client *client;
 855         struct cx25840_state *state;
 856         enum v4l2_chip_ident id;
 857         u16 device_id;
 858
 859         /* Check if the adapter supports the needed features
 860          * Not until kernel version 2.6.11 did the bit-algo
 861          * correctly report that it would do an I2C-level xfer */
 862         if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
 863                 return 0;
 864
 865         state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
 866         if (state == 0)
 867                 return -ENOMEM;
 868
 869         client = &state->c;
 870         client->addr = address;
 871         client->adapter = adapter;
 872         client->driver = &i2c_driver_cx25840;
 873         snprintf(client->name, sizeof(client->name) - 1, "cx25840");
 874
 875         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", address << 1);
 876
 877         device_id = cx25840_read(client, 0x101) << 8;
 878         device_id |= cx25840_read(client, 0x100);
 879
 880         /* The high byte of the device ID should be
 881          * 0x83 for the cx2583x and 0x84 for the cx2584x */
 882         if ((device_id & 0xff00) == 0x8300) {
 883                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
 884                 state->is_cx25836 = 1;
 885         }
 886         else if ((device_id & 0xff00) == 0x8400) {
 887                 id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
 888                 state->is_cx25836 = 0;
 889         }
 890         else {
 891                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
 892                 kfree(state);
 893                 return 0;
 894         }
 895
 896         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
 897                     (device_id & 0xfff0) >> 4,
 898                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : 3,
 899                     address << 1, adapter->name);
 900
 901         i2c_set_clientdata(client, state);
 902         state->vid_input = CX25840_COMPOSITE7;
 903         state->aud_input = CX25840_AUDIO8;
 904         state->audclk_freq = 48000;
 905         state->pvr150_workaround = 0;
 906         state->audmode = V4L2_TUNER_MODE_LANG1;
 907         state->vbi_line_offset = 8;
 908         state->id = id;
 909
 910         if (state->is_cx25836)
 911                 cx25836_initialize(client);
 912         else
 913                 cx25840_initialize(client, 1);
 914
 915         i2c_attach_client(client);
 916
 917         return 0;
 918 }
 919
 920 static int cx25840_attach_adapter(struct i2c_adapter *adapter)
 921 {
 922         if (adapter->class & I2C_CLASS_TV_ANALOG)
 923                 return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
 924         return 0;
 925 }
 926
 927 static int cx25840_detach_client(struct i2c_client *client)
 928 {
 929         struct cx25840_state *state = i2c_get_clientdata(client);
 930         int err;
 931
 932         err = i2c_detach_client(client);
 933         if (err) {
 934                 return err;
 935         }
 936
 937         kfree(state);
 938
 939         return 0;
 940 }
 941
 942 /* ----------------------------------------------------------------------- */
 943
 944 static struct i2c_driver i2c_driver_cx25840 = {
 945         .driver = {
 946                 .name = "cx25840",
 947         },
 948         .id = I2C_DRIVERID_CX25840,
 949         .attach_adapter = cx25840_attach_adapter,
 950         .detach_client = cx25840_detach_client,
 951         .command = cx25840_command,
 952 };
 953
 954
 955 static int __init m__init(void)
 956 {
 957         return i2c_add_driver(&i2c_driver_cx25840);
 958 }
 959
 960 static void __exit m__exit(void)
 961 {
 962         i2c_del_driver(&i2c_driver_cx25840);
 963 }
 964
 965 module_init(m__init);
 966 module_exit(m__exit);
 967
 968 /* ----------------------------------------------------------------------- */
 969
 970 static void log_video_status(struct i2c_client *client)
 971 {
 972         static const char *const fmt_strs[] = {
 973                 "0x0",
 974                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 975                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 976                 "0x9", "0xA", "0xB",
 977                 "SECAM",
 978                 "0xD", "0xE", "0xF"
 979         };
 980
 981         struct cx25840_state *state = i2c_get_clientdata(client);
 982         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
 983         u8 gen_stat1 = cx25840_read(client, 0x40d);
 984         u8 gen_stat2 = cx25840_read(client, 0x40e);
 985         int vid_input = state->vid_input;
 986
 987         v4l_info(client, "Video signal:              %spresent\n",
 988                     (gen_stat2 & 0x20) ? "" : "not ");
 989         v4l_info(client, "Detected format:           %s\n",
 990                     fmt_strs[gen_stat1 & 0xf]);
 991
 992         v4l_info(client, "Specified standard:        %s\n",
 993                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
 994
 995         if (vid_input >= CX25840_COMPOSITE1 &&
 996             vid_input <= CX25840_COMPOSITE8) {
 997                 v4l_info(client, "Specified video input:     Composite %d\n",
 998                         vid_input - CX25840_COMPOSITE1 + 1);
 999         } else {
1000                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
1001                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
1002         }
1003
1004         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
1005 }
1006
1007 /* ----------------------------------------------------------------------- */
1008
1009 static void log_audio_status(struct i2c_client *client)
1010 {
1011         struct cx25840_state *state = i2c_get_clientdata(client);
1012         u8 download_ctl = cx25840_read(client, 0x803);
1013         u8 mod_det_stat0 = cx25840_read(client, 0x804);
1014         u8 mod_det_stat1 = cx25840_read(client, 0x805);
1015         u8 audio_config = cx25840_read(client, 0x808);
1016         u8 pref_mode = cx25840_read(client, 0x809);
1017         u8 afc0 = cx25840_read(client, 0x80b);
1018         u8 mute_ctl = cx25840_read(client, 0x8d3);
1019         int aud_input = state->aud_input;
1020         char *p;
1021
1022         switch (mod_det_stat0) {
1023         case 0x00: p = "mono"; break;
1024         case 0x01: p = "stereo"; break;
1025         case 0x02: p = "dual"; break;
1026         case 0x04: p = "tri"; break;
1027         case 0x10: p = "mono with SAP"; break;
1028         case 0x11: p = "stereo with SAP"; break;
1029         case 0x12: p = "dual with SAP"; break;
1030         case 0x14: p = "tri with SAP"; break;
1031         case 0xfe: p = "forced mode"; break;
1032         default: p = "not defined";
1033         }
1034         v4l_info(client, "Detected audio mode:       %s\n", p);
1035
1036         switch (mod_det_stat1) {
1037         case 0x00: p = "not defined"; break;
1038         case 0x01: p = "EIAJ"; break;
1039         case 0x02: p = "A2-M"; break;
1040         case 0x03: p = "A2-BG"; break;
1041         case 0x04: p = "A2-DK1"; break;
1042         case 0x05: p = "A2-DK2"; break;
1043         case 0x06: p = "A2-DK3"; break;
1044         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
1045         case 0x08: p = "AM-L"; break;
1046         case 0x09: p = "NICAM-BG"; break;
1047         case 0x0a: p = "NICAM-DK"; break;
1048         case 0x0b: p = "NICAM-I"; break;
1049         case 0x0c: p = "NICAM-L"; break;
1050         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
1051         case 0x0e: p = "IF FM Radio"; break;
1052         case 0x0f: p = "BTSC"; break;
1053         case 0x10: p = "high-deviation FM"; break;
1054         case 0x11: p = "very high-deviation FM"; break;
1055         case 0xfd: p = "unknown audio standard"; break;
1056         case 0xfe: p = "forced audio standard"; break;
1057         case 0xff: p = "no detected audio standard"; break;
1058         default: p = "not defined";
1059         }
1060         v4l_info(client, "Detected audio standard:   %s\n", p);
1061         v4l_info(client, "Audio muted:               %s\n",
1062                     (mute_ctl & 0x2) ? "yes" : "no");
1063         v4l_info(client, "Audio microcontroller:     %s\n",
1064                     (download_ctl & 0x10) ? "running" : "stopped");
1065
1066         switch (audio_config >> 4) {
1067         case 0x00: p = "undefined"; break;
1068         case 0x01: p = "BTSC"; break;
1069         case 0x02: p = "EIAJ"; break;
1070         case 0x03: p = "A2-M"; break;
1071         case 0x04: p = "A2-BG"; break;
1072         case 0x05: p = "A2-DK1"; break;
1073         case 0x06: p = "A2-DK2"; break;
1074         case 0x07: p = "A2-DK3"; break;
1075         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
1076         case 0x09: p = "AM-L"; break;
1077         case 0x0a: p = "NICAM-BG"; break;
1078         case 0x0b: p = "NICAM-DK"; break;
1079         case 0x0c: p = "NICAM-I"; break;
1080         case 0x0d: p = "NICAM-L"; break;
1081         case 0x0e: p = "FM radio"; break;
1082         case 0x0f: p = "automatic detection"; break;
1083         default: p = "undefined";
1084         }
1085         v4l_info(client, "Configured audio standard: %s\n", p);
1086
1087         if ((audio_config >> 4) < 0xF) {
1088                 switch (audio_config & 0xF) {
1089                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
1090                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
1091                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
1092                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
1093                 case 0x04: p = "STEREO"; break;
1094                 case 0x05: p = "DUAL1 (AB)"; break;
1095                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
1096                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
1097                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
1098                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
1099                 case 0x0a: p = "SAP"; break;
1100                 default: p = "undefined";
1101                 }
1102                 v4l_info(client, "Configured audio mode:     %s\n", p);
1103         } else {
1104                 switch (audio_config & 0xF) {
1105                 case 0x00: p = "BG"; break;
1106                 case 0x01: p = "DK1"; break;
1107                 case 0x02: p = "DK2"; break;
1108                 case 0x03: p = "DK3"; break;
1109                 case 0x04: p = "I"; break;
1110                 case 0x05: p = "L"; break;
1111                 case 0x06: p = "BTSC"; break;
1112                 case 0x07: p = "EIAJ"; break;
1113                 case 0x08: p = "A2-M"; break;
1114                 case 0x09: p = "FM Radio"; break;
1115                 case 0x0f: p = "automatic standard and mode detection"; break;
1116                 default: p = "undefined";
1117                 }
1118                 v4l_info(client, "Configured audio system:   %s\n", p);
1119         }
1120
1121         if (aud_input) {
1122                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
1123         } else {
1124                 v4l_info(client, "Specified audio input:     External\n");
1125         }
1126
1127         switch (pref_mode & 0xf) {
1128         case 0: p = "mono/language A"; break;
1129         case 1: p = "language B"; break;
1130         case 2: p = "language C"; break;
1131         case 3: p = "analog fallback"; break;
1132         case 4: p = "stereo"; break;
1133         case 5: p = "language AC"; break;
1134         case 6: p = "language BC"; break;
1135         case 7: p = "language AB"; break;
1136         default: p = "undefined";
1137         }
1138         v4l_info(client, "Preferred audio mode:      %s\n", p);
1139
1140         if ((audio_config & 0xf) == 0xf) {
1141                 switch ((afc0 >> 3) & 0x3) {
1142                 case 0: p = "system DK"; break;
1143                 case 1: p = "system L"; break;
1144                 case 2: p = "autodetect"; break;
1145                 default: p = "undefined";
1146                 }
1147                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
1148
1149                 switch (afc0 & 0x7) {
1150                 case 0: p = "chroma"; break;
1151                 case 1: p = "BTSC"; break;
1152                 case 2: p = "EIAJ"; break;
1153                 case 3: p = "A2-M"; break;
1154                 case 4: p = "autodetect"; break;
1155                 default: p = "undefined";
1156                 }
1157                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
1158         }
1159 }