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

   1 /* cx25840 - Conexant CX25840 audio/video decoder driver
   2  *
   3  * Copyright (C) 2004 Ulf Eklund
   4  *
   5  * Based on the saa7115 driver and on the first verison of Chris Kennedy's
   6  * cx25840 driver.
   7  *
   8  * Changes by Tyler Trafford <tatrafford@comcast.net>
   9  *    - cleanup/rewrite for V4L2 API (2005)
  10  *
  11  * VBI support by Hans Verkuil <hverkuil@xs4all.nl>.
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  26  */
  27
  28
  29 #include <linux/kernel.h>
  30 #include <linux/module.h>
  31 #include <linux/slab.h>
  32 #include <linux/videodev2.h>
  33 #include <linux/i2c.h>
  34 #include <media/audiochip.h>
  35 #include <media/v4l2-common.h>
  36
  37 #include "cx25840.h"
  38
  39 MODULE_DESCRIPTION("Conexant CX25840 audio/video decoder driver");
  40 MODULE_AUTHOR("Ulf Eklund, Chris Kennedy, Hans Verkuil, Tyler Trafford");
  41 MODULE_LICENSE("GPL");
  42
  43 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
  44
  45
  46 static int cx25840_debug;
  47
  48 module_param_named(debug,cx25840_debug, int, 0644);
  49
  50 MODULE_PARM_DESC(debug, "Debugging messages [0=Off (default) 1=On]");
  51
  52 I2C_CLIENT_INSMOD;
  53
  54 /* ----------------------------------------------------------------------- */
  55
  56 int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
  57 {
  58         u8 buffer[3];
  59         buffer[0] = addr >> 8;
  60         buffer[1] = addr & 0xff;
  61         buffer[2] = value;
  62         return i2c_master_send(client, buffer, 3);
  63 }
  64
  65 int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
  66 {
  67         u8 buffer[6];
  68         buffer[0] = addr >> 8;
  69         buffer[1] = addr & 0xff;
  70         buffer[2] = value >> 24;
  71         buffer[3] = (value >> 16) & 0xff;
  72         buffer[4] = (value >> 8) & 0xff;
  73         buffer[5] = value & 0xff;
  74         return i2c_master_send(client, buffer, 6);
  75 }
  76
  77 u8 cx25840_read(struct i2c_client * client, u16 addr)
  78 {
  79         u8 buffer[2];
  80         buffer[0] = addr >> 8;
  81         buffer[1] = addr & 0xff;
  82
  83         if (i2c_master_send(client, buffer, 2) < 2)
  84                 return 0;
  85
  86         if (i2c_master_recv(client, buffer, 1) < 1)
  87                 return 0;
  88
  89         return buffer[0];
  90 }
  91
  92 u32 cx25840_read4(struct i2c_client * client, u16 addr)
  93 {
  94         u8 buffer[4];
  95         buffer[0] = addr >> 8;
  96         buffer[1] = addr & 0xff;
  97
  98         if (i2c_master_send(client, buffer, 2) < 2)
  99                 return 0;
 100
 101         if (i2c_master_recv(client, buffer, 4) < 4)
 102                 return 0;
 103
 104         return (buffer[0] << 24) | (buffer[1] << 16) |
 105             (buffer[2] << 8) | buffer[3];
 106 }
 107
 108 int cx25840_and_or(struct i2c_client *client, u16 addr, u8 and_mask,
 109                    u8 or_value)
 110 {
 111         return cx25840_write(client, addr,
 112                              (cx25840_read(client, addr) & and_mask) |
 113                              or_value);
 114 }
 115
 116 /* ----------------------------------------------------------------------- */
 117
 118 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 119                                                 enum cx25840_audio_input aud_input);
 120 static void log_status(struct i2c_client *client);
 121
 122 /* ----------------------------------------------------------------------- */
 123
 124 static void init_dll1(struct i2c_client *client)
 125 {
 126         /* This is the Hauppauge sequence used to
 127          * initialize the Delay Lock Loop 1 (ADC DLL). */
 128         cx25840_write(client, 0x159, 0x23);
 129         cx25840_write(client, 0x15a, 0x87);
 130         cx25840_write(client, 0x15b, 0x06);
 131         cx25840_write(client, 0x159, 0xe1);
 132         cx25840_write(client, 0x15a, 0x86);
 133         cx25840_write(client, 0x159, 0xe0);
 134         cx25840_write(client, 0x159, 0xe1);
 135         cx25840_write(client, 0x15b, 0x10);
 136 }
 137
 138 static void init_dll2(struct i2c_client *client)
 139 {
 140         /* This is the Hauppauge sequence used to
 141          * initialize the Delay Lock Loop 2 (ADC DLL). */
 142         cx25840_write(client, 0x15d, 0xe3);
 143         cx25840_write(client, 0x15e, 0x86);
 144         cx25840_write(client, 0x15f, 0x06);
 145         cx25840_write(client, 0x15d, 0xe1);
 146         cx25840_write(client, 0x15d, 0xe0);
 147         cx25840_write(client, 0x15d, 0xe1);
 148 }
 149
 150 static void cx25840_initialize(struct i2c_client *client, int loadfw)
 151 {
 152         struct cx25840_state *state = i2c_get_clientdata(client);
 153
 154         /* datasheet startup in numbered steps, refer to page 3-77 */
 155         /* 2. */
 156         cx25840_and_or(client, 0x803, ~0x10, 0x00);
 157         /* The default of this register should be 4, but I get 0 instead.
 158          * Set this register to 4 manually. */
 159         cx25840_write(client, 0x000, 0x04);
 160         /* 3. */
 161         init_dll1(client);
 162         init_dll2(client);
 163         cx25840_write(client, 0x136, 0x0a);
 164         /* 4. */
 165         cx25840_write(client, 0x13c, 0x01);
 166         cx25840_write(client, 0x13c, 0x00);
 167         /* 5. */
 168         if (loadfw)
 169                 cx25840_loadfw(client);
 170         /* 6. */
 171         cx25840_write(client, 0x115, 0x8c);
 172         cx25840_write(client, 0x116, 0x07);
 173         cx25840_write(client, 0x118, 0x02);
 174         /* 7. */
 175         cx25840_write(client, 0x4a5, 0x80);
 176         cx25840_write(client, 0x4a5, 0x00);
 177         cx25840_write(client, 0x402, 0x00);
 178         /* 8. */
 179         cx25840_write(client, 0x401, 0x18);
 180         cx25840_write(client, 0x4a2, 0x10);
 181         cx25840_write(client, 0x402, 0x04);
 182         /* 10. */
 183         cx25840_write(client, 0x8d3, 0x1f);
 184         cx25840_write(client, 0x8e3, 0x03);
 185
 186         cx25840_vbi_setup(client);
 187
 188         /* trial and error says these are needed to get audio */
 189         cx25840_write(client, 0x914, 0xa0);
 190         cx25840_write(client, 0x918, 0xa0);
 191         cx25840_write(client, 0x919, 0x01);
 192
 193         /* stereo prefered */
 194         cx25840_write(client, 0x809, 0x04);
 195         /* AC97 shift */
 196         cx25840_write(client, 0x8cf, 0x0f);
 197
 198         /* (re)set input */
 199         set_input(client, state->vid_input, state->aud_input);
 200
 201         /* start microcontroller */
 202         cx25840_and_or(client, 0x803, ~0x10, 0x10);
 203 }
 204
 205 /* ----------------------------------------------------------------------- */
 206
 207 static void input_change(struct i2c_client *client)
 208 {
 209         struct cx25840_state *state = i2c_get_clientdata(client);
 210         v4l2_std_id std = cx25840_get_v4lstd(client);
 211
 212         /* Note: perhaps V4L2_STD_PAL_M should be handled as V4L2_STD_NTSC
 213            instead of V4L2_STD_PAL. Someone needs to test this. */
 214         if (std & V4L2_STD_PAL) {
 215                 /* Follow tuner change procedure for PAL */
 216                 cx25840_write(client, 0x808, 0xff);
 217                 cx25840_write(client, 0x80b, 0x10);
 218         } else if (std & V4L2_STD_SECAM) {
 219                 /* Select autodetect for SECAM */
 220                 cx25840_write(client, 0x808, 0xff);
 221                 cx25840_write(client, 0x80b, 0x10);
 222         } else if (std & V4L2_STD_NTSC) {
 223                 /* Certain Hauppauge PVR150 models have a hardware bug
 224                    that causes audio to drop out. For these models the
 225                    audio standard must be set explicitly.
 226                    To be precise: it affects cards with tuner models
 227                    85, 99 and 112 (model numbers from tveeprom). */
 228                 int hw_fix = state->pvr150_workaround;
 229
 230                 if (std == V4L2_STD_NTSC_M_JP) {
 231                         /* Japan uses EIAJ audio standard */
 232                         cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
 233                 } else if (std == V4L2_STD_NTSC_M_KR) {
 234                         /* South Korea uses A2 audio standard */
 235                         cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
 236                 } else {
 237                         /* Others use the BTSC audio standard */
 238                         cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
 239                 }
 240                 cx25840_write(client, 0x80b, 0x00);
 241         }
 242
 243         if (cx25840_read(client, 0x803) & 0x10) {
 244                 /* restart audio decoder microcontroller */
 245                 cx25840_and_or(client, 0x803, ~0x10, 0x00);
 246                 cx25840_and_or(client, 0x803, ~0x10, 0x10);
 247         }
 248 }
 249
 250 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 251                                                 enum cx25840_audio_input aud_input)
 252 {
 253         struct cx25840_state *state = i2c_get_clientdata(client);
 254         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
 255                            vid_input <= CX25840_COMPOSITE8);
 256         u8 reg;
 257
 258         v4l_dbg(1, cx25840_debug, client, "decoder set video input %d, audio input %d\n",
 259                         vid_input, aud_input);
 260
 261         if (is_composite) {
 262                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
 263         } else {
 264                 int luma = vid_input & 0xf0;
 265                 int chroma = vid_input & 0xf00;
 266
 267                 if ((vid_input & ~0xff0) ||
 268                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
 269                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
 270                         v4l_err(client, "0x%04x is not a valid video input!\n", vid_input);
 271                         return -EINVAL;
 272                 }
 273                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
 274                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
 275                         reg &= 0x3f;
 276                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
 277                 } else {
 278                         reg &= 0xcf;
 279                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
 280                 }
 281         }
 282
 283         switch (aud_input) {
 284         case CX25840_AUDIO_SERIAL:
 285                 /* do nothing, use serial audio input */
 286                 break;
 287         case CX25840_AUDIO4: reg &= ~0x30; break;
 288         case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
 289         case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
 290         case CX25840_AUDIO7: reg &= ~0xc0; break;
 291         case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
 292
 293         default:
 294                 v4l_err(client, "0x%04x is not a valid audio input!\n", aud_input);
 295                 return -EINVAL;
 296         }
 297
 298         cx25840_write(client, 0x103, reg);
 299         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
 300         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
 301         /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
 302         cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
 303         /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
 304         if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
 305                 cx25840_and_or(client, 0x102, ~0x4, 4);
 306         else
 307                 cx25840_and_or(client, 0x102, ~0x4, 0);
 308
 309         state->vid_input = vid_input;
 310         state->aud_input = aud_input;
 311         cx25840_audio_set_path(client);
 312         input_change(client);
 313         return 0;
 314 }
 315
 316 /* ----------------------------------------------------------------------- */
 317
 318 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
 319 {
 320         u8 fmt=0;       /* zero is autodetect */
 321
 322         /* First tests should be against specific std */
 323         if (std == V4L2_STD_NTSC_M_JP) {
 324                 fmt=0x2;
 325         } else if (std == V4L2_STD_NTSC_443) {
 326                 fmt=0x3;
 327         } else if (std == V4L2_STD_PAL_M) {
 328                 fmt=0x5;
 329         } else if (std == V4L2_STD_PAL_N) {
 330                 fmt=0x6;
 331         } else if (std == V4L2_STD_PAL_Nc) {
 332                 fmt=0x7;
 333         } else if (std == V4L2_STD_PAL_60) {
 334                 fmt=0x8;
 335         } else {
 336                 /* Then, test against generic ones */
 337                 if (std & V4L2_STD_NTSC) {
 338                         fmt=0x1;
 339                 } else if (std & V4L2_STD_PAL) {
 340                         fmt=0x4;
 341                 } else if (std & V4L2_STD_SECAM) {
 342                         fmt=0xc;
 343                 }
 344         }
 345
 346         cx25840_and_or(client, 0x400, ~0xf, fmt);
 347         cx25840_vbi_setup(client);
 348         return 0;
 349 }
 350
 351 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
 352 {
 353         /* check VID_FMT_SEL first */
 354         u8 fmt = cx25840_read(client, 0x400) & 0xf;
 355
 356         if (!fmt) {
 357                 /* check AFD_FMT_STAT if set to autodetect */
 358                 fmt = cx25840_read(client, 0x40d) & 0xf;
 359         }
 360
 361         switch (fmt) {
 362         case 0x1: return V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR;
 363         case 0x2: return V4L2_STD_NTSC_M_JP;
 364         case 0x3: return V4L2_STD_NTSC_443;
 365         case 0x4: return V4L2_STD_PAL;
 366         case 0x5: return V4L2_STD_PAL_M;
 367         case 0x6: return V4L2_STD_PAL_N;
 368         case 0x7: return V4L2_STD_PAL_Nc;
 369         case 0x8: return V4L2_STD_PAL_60;
 370         case 0xc: return V4L2_STD_SECAM;
 371         default: return V4L2_STD_UNKNOWN;
 372         }
 373 }
 374
 375 /* ----------------------------------------------------------------------- */
 376
 377 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 378 {
 379         struct cx25840_state *state = i2c_get_clientdata(client);
 380
 381         switch (ctrl->id) {
 382         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 383                 state->pvr150_workaround = ctrl->value;
 384                 set_input(client, state->vid_input, state->aud_input);
 385                 break;
 386
 387         case V4L2_CID_BRIGHTNESS:
 388                 if (ctrl->value < 0 || ctrl->value > 255) {
 389                         v4l_err(client, "invalid brightness setting %d\n",
 390                                     ctrl->value);
 391                         return -ERANGE;
 392                 }
 393
 394                 cx25840_write(client, 0x414, ctrl->value - 128);
 395                 break;
 396
 397         case V4L2_CID_CONTRAST:
 398                 if (ctrl->value < 0 || ctrl->value > 127) {
 399                         v4l_err(client, "invalid contrast setting %d\n",
 400                                     ctrl->value);
 401                         return -ERANGE;
 402                 }
 403
 404                 cx25840_write(client, 0x415, ctrl->value << 1);
 405                 break;
 406
 407         case V4L2_CID_SATURATION:
 408                 if (ctrl->value < 0 || ctrl->value > 127) {
 409                         v4l_err(client, "invalid saturation setting %d\n",
 410                                     ctrl->value);
 411                         return -ERANGE;
 412                 }
 413
 414                 cx25840_write(client, 0x420, ctrl->value << 1);
 415                 cx25840_write(client, 0x421, ctrl->value << 1);
 416                 break;
 417
 418         case V4L2_CID_HUE:
 419                 if (ctrl->value < -127 || ctrl->value > 127) {
 420                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
 421                         return -ERANGE;
 422                 }
 423
 424                 cx25840_write(client, 0x422, ctrl->value);
 425                 break;
 426
 427         case V4L2_CID_AUDIO_VOLUME:
 428         case V4L2_CID_AUDIO_BASS:
 429         case V4L2_CID_AUDIO_TREBLE:
 430         case V4L2_CID_AUDIO_BALANCE:
 431         case V4L2_CID_AUDIO_MUTE:
 432                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 433
 434         default:
 435                 return -EINVAL;
 436         }
 437
 438         return 0;
 439 }
 440
 441 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 442 {
 443         struct cx25840_state *state = i2c_get_clientdata(client);
 444
 445         switch (ctrl->id) {
 446         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 447                 ctrl->value = state->pvr150_workaround;
 448                 break;
 449         case V4L2_CID_BRIGHTNESS:
 450                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
 451                 break;
 452         case V4L2_CID_CONTRAST:
 453                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 454                 break;
 455         case V4L2_CID_SATURATION:
 456                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 457                 break;
 458         case V4L2_CID_HUE:
 459                 ctrl->value = (s8)cx25840_read(client, 0x422);
 460                 break;
 461         case V4L2_CID_AUDIO_VOLUME:
 462         case V4L2_CID_AUDIO_BASS:
 463         case V4L2_CID_AUDIO_TREBLE:
 464         case V4L2_CID_AUDIO_BALANCE:
 465         case V4L2_CID_AUDIO_MUTE:
 466                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 467         default:
 468                 return -EINVAL;
 469         }
 470
 471         return 0;
 472 }
 473
 474 /* ----------------------------------------------------------------------- */
 475
 476 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 477 {
 478         switch (fmt->type) {
 479         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 480                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 481         default:
 482                 return -EINVAL;
 483         }
 484
 485         return 0;
 486 }
 487
 488 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 489 {
 490         struct v4l2_pix_format *pix;
 491         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 492         int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);
 493
 494         switch (fmt->type) {
 495         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 496                 pix = &(fmt->fmt.pix);
 497
 498                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 499                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 500
 501                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 502                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 503
 504                 Vlines = pix->height + (is_pal ? 4 : 7);
 505
 506                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 507                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 508                         v4l_err(client, "%dx%d is not a valid size!\n",
 509                                     pix->width, pix->height);
 510                         return -ERANGE;
 511                 }
 512
 513                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 514                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 515                 VSC &= 0x1fff;
 516
 517                 if (pix->width >= 385)
 518                         filter = 0;
 519                 else if (pix->width > 192)
 520                         filter = 1;
 521                 else if (pix->width > 96)
 522                         filter = 2;
 523                 else
 524                         filter = 3;
 525
 526                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
 527                             pix->width, pix->height, HSC, VSC);
 528
 529                 /* HSCALE=HSC */
 530                 cx25840_write(client, 0x418, HSC & 0xff);
 531                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 532                 cx25840_write(client, 0x41a, HSC >> 16);
 533                 /* VSCALE=VSC */
 534                 cx25840_write(client, 0x41c, VSC & 0xff);
 535                 cx25840_write(client, 0x41d, VSC >> 8);
 536                 /* VS_INTRLACE=1 VFILT=filter */
 537                 cx25840_write(client, 0x41e, 0x8 | filter);
 538                 break;
 539
 540         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 541                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 542
 543         case V4L2_BUF_TYPE_VBI_CAPTURE:
 544                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 545
 546         default:
 547                 return -EINVAL;
 548         }
 549
 550         return 0;
 551 }
 552
 553 /* ----------------------------------------------------------------------- */
 554
 555 static struct v4l2_queryctrl cx25840_qctrl[] = {
 556         {
 557                 .id            = V4L2_CID_BRIGHTNESS,
 558                 .type          = V4L2_CTRL_TYPE_INTEGER,
 559                 .name          = "Brightness",
 560                 .minimum       = 0,
 561                 .maximum       = 255,
 562                 .step          = 1,
 563                 .default_value = 128,
 564                 .flags         = 0,
 565         }, {
 566                 .id            = V4L2_CID_CONTRAST,
 567                 .type          = V4L2_CTRL_TYPE_INTEGER,
 568                 .name          = "Contrast",
 569                 .minimum       = 0,
 570                 .maximum       = 255,
 571                 .step          = 1,
 572                 .default_value = 64,
 573                 .flags         = 0,
 574         }, {
 575                 .id            = V4L2_CID_SATURATION,
 576                 .type          = V4L2_CTRL_TYPE_INTEGER,
 577                 .name          = "Saturation",
 578                 .minimum       = 0,
 579                 .maximum       = 255,
 580                 .step          = 1,
 581                 .default_value = 64,
 582                 .flags         = 0,
 583         }, {
 584                 .id            = V4L2_CID_HUE,
 585                 .type          = V4L2_CTRL_TYPE_INTEGER,
 586                 .name          = "Hue",
 587                 .minimum       = -128,
 588                 .maximum       = 127,
 589                 .step          = 1,
 590                 .default_value = 0,
 591                 .flags         = 0,
 592         }, {
 593                 .id            = V4L2_CID_AUDIO_VOLUME,
 594                 .type          = V4L2_CTRL_TYPE_INTEGER,
 595                 .name          = "Volume",
 596                 .minimum       = 0,
 597                 .maximum       = 65535,
 598                 .step          = 65535/100,
 599                 .default_value = 58880,
 600                 .flags         = 0,
 601         }, {
 602                 .id            = V4L2_CID_AUDIO_BALANCE,
 603                 .type          = V4L2_CTRL_TYPE_INTEGER,
 604                 .name          = "Balance",
 605                 .minimum       = 0,
 606                 .maximum       = 65535,
 607                 .step          = 65535/100,
 608                 .default_value = 32768,
 609                 .flags         = 0,
 610         }, {
 611                 .id            = V4L2_CID_AUDIO_MUTE,
 612                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 613                 .name          = "Mute",
 614                 .minimum       = 0,
 615                 .maximum       = 1,
 616                 .step          = 1,
 617                 .default_value = 1,
 618                 .flags         = 0,
 619         }, {
 620                 .id            = V4L2_CID_AUDIO_BASS,
 621                 .type          = V4L2_CTRL_TYPE_INTEGER,
 622                 .name          = "Bass",
 623                 .minimum       = 0,
 624                 .maximum       = 65535,
 625                 .step          = 65535/100,
 626                 .default_value = 32768,
 627         }, {
 628                 .id            = V4L2_CID_AUDIO_TREBLE,
 629                 .type          = V4L2_CTRL_TYPE_INTEGER,
 630                 .name          = "Treble",
 631                 .minimum       = 0,
 632                 .maximum       = 65535,
 633                 .step          = 65535/100,
 634                 .default_value = 32768,
 635         },
 636 };
 637
 638 /* ----------------------------------------------------------------------- */
 639
 640 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 641                            void *arg)
 642 {
 643         struct cx25840_state *state = i2c_get_clientdata(client);
 644         struct v4l2_tuner *vt = arg;
 645
 646         switch (cmd) {
 647 #ifdef CONFIG_VIDEO_ADV_DEBUG
 648         /* ioctls to allow direct access to the
 649          * cx25840 registers for testing */
 650         case VIDIOC_INT_G_REGISTER:
 651         {
 652                 struct v4l2_register *reg = arg;
 653
 654                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 655                         return -EINVAL;
 656                 reg->val = cx25840_read(client, reg->reg & 0x0fff);
 657                 break;
 658         }
 659
 660         case VIDIOC_INT_S_REGISTER:
 661         {
 662                 struct v4l2_register *reg = arg;
 663
 664                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 665                         return -EINVAL;
 666                 if (!capable(CAP_SYS_ADMIN))
 667                         return -EPERM;
 668                 cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 669                 break;
 670         }
 671 #endif
 672
 673         case VIDIOC_INT_DECODE_VBI_LINE:
 674                 return cx25840_vbi(client, cmd, arg);
 675
 676         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 677                 return cx25840_audio(client, cmd, arg);
 678
 679         case VIDIOC_STREAMON:
 680                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
 681                 cx25840_write(client, 0x115, 0x8c);
 682                 cx25840_write(client, 0x116, 0x07);
 683                 break;
 684
 685         case VIDIOC_STREAMOFF:
 686                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
 687                 cx25840_write(client, 0x115, 0x00);
 688                 cx25840_write(client, 0x116, 0x00);
 689                 break;
 690
 691         case VIDIOC_LOG_STATUS:
 692                 log_status(client);
 693                 break;
 694
 695         case VIDIOC_G_CTRL:
 696                 return get_v4lctrl(client, (struct v4l2_control *)arg);
 697
 698         case VIDIOC_S_CTRL:
 699                 return set_v4lctrl(client, (struct v4l2_control *)arg);
 700
 701         case VIDIOC_QUERYCTRL:
 702         {
 703                 struct v4l2_queryctrl *qc = arg;
 704                 int i;
 705
 706                 for (i = 0; i < ARRAY_SIZE(cx25840_qctrl); i++)
 707                         if (qc->id && qc->id == cx25840_qctrl[i].id) {
 708                                 memcpy(qc, &cx25840_qctrl[i], sizeof(*qc));
 709                                 return 0;
 710                         }
 711                 return -EINVAL;
 712         }
 713
 714         case VIDIOC_G_STD:
 715                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
 716                 break;
 717
 718         case VIDIOC_S_STD:
 719                 state->radio = 0;
 720                 return set_v4lstd(client, *(v4l2_std_id *)arg);
 721
 722         case AUDC_SET_RADIO:
 723                 state->radio = 1;
 724                 break;
 725
 726         case VIDIOC_G_INPUT:
 727                 *(int *)arg = state->vid_input;
 728                 break;
 729
 730         case VIDIOC_S_INPUT:
 731                 return set_input(client, *(enum cx25840_video_input *)arg, state->aud_input);
 732
 733         case VIDIOC_S_AUDIO:
 734         {
 735                 struct v4l2_audio *input = arg;
 736
 737                 return set_input(client, state->vid_input, input->index);
 738         }
 739
 740         case VIDIOC_G_AUDIO:
 741         {
 742                 struct v4l2_audio *input = arg;
 743
 744                 memset(input, 0, sizeof(*input));
 745                 input->index = state->aud_input;
 746                 break;
 747         }
 748
 749         case VIDIOC_S_FREQUENCY:
 750                 input_change(client);
 751                 break;
 752
 753         case VIDIOC_G_TUNER:
 754         {
 755                 u8 mode = cx25840_read(client, 0x804);
 756                 u8 pref = cx25840_read(client, 0x809) & 0xf;
 757                 u8 vpres = cx25840_read(client, 0x80a) & 0x10;
 758                 int val = 0;
 759
 760                 if (state->radio)
 761                         break;
 762
 763                 vt->capability |=
 764                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
 765                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
 766
 767                 vt->signal = vpres ? 0xffff : 0x0;
 768
 769                 /* get rxsubchans and audmode */
 770                 if ((mode & 0xf) == 1)
 771                         val |= V4L2_TUNER_SUB_STEREO;
 772                 else
 773                         val |= V4L2_TUNER_SUB_MONO;
 774
 775                 if (mode == 2 || mode == 4)
 776                         val |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 777
 778                 if (mode & 0x10)
 779                         val |= V4L2_TUNER_SUB_SAP;
 780
 781                 vt->rxsubchans = val;
 782
 783                 switch (pref) {
 784                 case 0:
 785                         vt->audmode = V4L2_TUNER_MODE_MONO;
 786                         break;
 787                 case 1:
 788                 case 2:
 789                         vt->audmode = V4L2_TUNER_MODE_LANG2;
 790                         break;
 791                 case 4:
 792                 default:
 793                         vt->audmode = V4L2_TUNER_MODE_STEREO;
 794                 }
 795                 break;
 796         }
 797
 798         case VIDIOC_S_TUNER:
 799                 switch (vt->audmode) {
 800                 case V4L2_TUNER_MODE_MONO:
 801                 case V4L2_TUNER_MODE_LANG1:
 802                         /* Force PREF_MODE to MONO */
 803                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
 804                         break;
 805                 case V4L2_TUNER_MODE_STEREO:
 806                         /* Force PREF_MODE to STEREO */
 807                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
 808                         break;
 809                 case V4L2_TUNER_MODE_LANG2:
 810                         /* Force PREF_MODE to LANG2 */
 811                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
 812                         break;
 813                 }
 814                 break;
 815
 816         case VIDIOC_G_FMT:
 817                 return get_v4lfmt(client, (struct v4l2_format *)arg);
 818
 819         case VIDIOC_S_FMT:
 820                 return set_v4lfmt(client, (struct v4l2_format *)arg);
 821
 822         case VIDIOC_INT_RESET:
 823                 cx25840_initialize(client, 0);
 824                 break;
 825
 826         case VIDIOC_INT_G_CHIP_IDENT:
 827                 *(enum v4l2_chip_ident *)arg =
 828                         V4L2_IDENT_CX25840 + ((cx25840_read(client, 0x100) >> 4) & 0xf);
 829                 break;
 830
 831         default:
 832                 return -EINVAL;
 833         }
 834
 835         return 0;
 836 }
 837
 838 /* ----------------------------------------------------------------------- */
 839
 840 static struct i2c_driver i2c_driver_cx25840;
 841
 842 static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
 843                                  int kind)
 844 {
 845         struct i2c_client *client;
 846         struct cx25840_state *state;
 847         u16 device_id;
 848
 849         /* Check if the adapter supports the needed features
 850          * Not until kernel version 2.6.11 did the bit-algo
 851          * correctly report that it would do an I2C-level xfer */
 852         if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
 853                 return 0;
 854
 855         client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 856         if (client == 0)
 857                 return -ENOMEM;
 858
 859         client->addr = address;
 860         client->adapter = adapter;
 861         client->driver = &i2c_driver_cx25840;
 862         snprintf(client->name, sizeof(client->name) - 1, "cx25840");
 863
 864         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", address << 1);
 865
 866         device_id = cx25840_read(client, 0x101) << 8;
 867         device_id |= cx25840_read(client, 0x100);
 868
 869         /* The high byte of the device ID should be
 870          * 0x84 if chip is present */
 871         if ((device_id & 0xff00) != 0x8400) {
 872                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
 873                 kfree(client);
 874                 return 0;
 875         }
 876
 877         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
 878                     (device_id & 0xfff0) >> 4,
 879                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : 3,
 880                     address << 1, adapter->name);
 881
 882         state = kmalloc(sizeof(struct cx25840_state), GFP_KERNEL);
 883         if (state == NULL) {
 884                 kfree(client);
 885                 return -ENOMEM;
 886         }
 887
 888         i2c_set_clientdata(client, state);
 889         memset(state, 0, sizeof(struct cx25840_state));
 890         state->vid_input = CX25840_COMPOSITE7;
 891         state->aud_input = CX25840_AUDIO8;
 892         state->audclk_freq = 48000;
 893         state->pvr150_workaround = 0;
 894
 895         cx25840_initialize(client, 1);
 896
 897         i2c_attach_client(client);
 898
 899         return 0;
 900 }
 901
 902 static int cx25840_attach_adapter(struct i2c_adapter *adapter)
 903 {
 904         if (adapter->class & I2C_CLASS_TV_ANALOG)
 905                 return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
 906         return 0;
 907 }
 908
 909 static int cx25840_detach_client(struct i2c_client *client)
 910 {
 911         struct cx25840_state *state = i2c_get_clientdata(client);
 912         int err;
 913
 914         err = i2c_detach_client(client);
 915         if (err) {
 916                 return err;
 917         }
 918
 919         kfree(state);
 920         kfree(client);
 921
 922         return 0;
 923 }
 924
 925 /* ----------------------------------------------------------------------- */
 926
 927 static struct i2c_driver i2c_driver_cx25840 = {
 928         .driver = {
 929                 .name = "cx25840",
 930         },
 931         .id = I2C_DRIVERID_CX25840,
 932         .attach_adapter = cx25840_attach_adapter,
 933         .detach_client = cx25840_detach_client,
 934         .command = cx25840_command,
 935 };
 936
 937
 938 static int __init m__init(void)
 939 {
 940         return i2c_add_driver(&i2c_driver_cx25840);
 941 }
 942
 943 static void __exit m__exit(void)
 944 {
 945         i2c_del_driver(&i2c_driver_cx25840);
 946 }
 947
 948 module_init(m__init);
 949 module_exit(m__exit);
 950
 951 /* ----------------------------------------------------------------------- */
 952
 953 static void log_status(struct i2c_client *client)
 954 {
 955         static const char *const fmt_strs[] = {
 956                 "0x0",
 957                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 958                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 959                 "0x9", "0xA", "0xB",
 960                 "SECAM",
 961                 "0xD", "0xE", "0xF"
 962         };
 963
 964         struct cx25840_state *state = i2c_get_clientdata(client);
 965         u8 microctrl_vidfmt = cx25840_read(client, 0x80a);
 966         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
 967         u8 gen_stat1 = cx25840_read(client, 0x40d);
 968         u8 download_ctl = cx25840_read(client, 0x803);
 969         u8 mod_det_stat0 = cx25840_read(client, 0x804);
 970         u8 mod_det_stat1 = cx25840_read(client, 0x805);
 971         u8 audio_config = cx25840_read(client, 0x808);
 972         u8 pref_mode = cx25840_read(client, 0x809);
 973         u8 afc0 = cx25840_read(client, 0x80b);
 974         u8 mute_ctl = cx25840_read(client, 0x8d3);
 975         int vid_input = state->vid_input;
 976         int aud_input = state->aud_input;
 977         char *p;
 978
 979         v4l_info(client, "Video signal:              %spresent\n",
 980                     (microctrl_vidfmt & 0x10) ? "" : "not ");
 981         v4l_info(client, "Detected format:           %s\n",
 982                     fmt_strs[gen_stat1 & 0xf]);
 983
 984         switch (mod_det_stat0) {
 985         case 0x00: p = "mono"; break;
 986         case 0x01: p = "stereo"; break;
 987         case 0x02: p = "dual"; break;
 988         case 0x04: p = "tri"; break;
 989         case 0x10: p = "mono with SAP"; break;
 990         case 0x11: p = "stereo with SAP"; break;
 991         case 0x12: p = "dual with SAP"; break;
 992         case 0x14: p = "tri with SAP"; break;
 993         case 0xfe: p = "forced mode"; break;
 994         default: p = "not defined";
 995         }
 996         v4l_info(client, "Detected audio mode:       %s\n", p);
 997
 998         switch (mod_det_stat1) {
 999         case 0x00: p = "not defined"; break;
1000         case 0x01: p = "EIAJ"; break;
1001         case 0x02: p = "A2-M"; break;
1002         case 0x03: p = "A2-BG"; break;
1003         case 0x04: p = "A2-DK1"; break;
1004         case 0x05: p = "A2-DK2"; break;
1005         case 0x06: p = "A2-DK3"; break;
1006         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
1007         case 0x08: p = "AM-L"; break;
1008         case 0x09: p = "NICAM-BG"; break;
1009         case 0x0a: p = "NICAM-DK"; break;
1010         case 0x0b: p = "NICAM-I"; break;
1011         case 0x0c: p = "NICAM-L"; break;
1012         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
1013         case 0x0e: p = "IF FM Radio"; break;
1014         case 0x0f: p = "BTSC"; break;
1015         case 0x10: p = "high-deviation FM"; break;
1016         case 0x11: p = "very high-deviation FM"; break;
1017         case 0xfd: p = "unknown audio standard"; break;
1018         case 0xfe: p = "forced audio standard"; break;
1019         case 0xff: p = "no detected audio standard"; break;
1020         default: p = "not defined";
1021         }
1022         v4l_info(client, "Detected audio standard:   %s\n", p);
1023         v4l_info(client, "Audio muted:               %s\n",
1024                     (mute_ctl & 0x2) ? "yes" : "no");
1025         v4l_info(client, "Audio microcontroller:     %s\n",
1026                     (download_ctl & 0x10) ? "running" : "stopped");
1027
1028         switch (audio_config >> 4) {
1029         case 0x00: p = "undefined"; break;
1030         case 0x01: p = "BTSC"; break;
1031         case 0x02: p = "EIAJ"; break;
1032         case 0x03: p = "A2-M"; break;
1033         case 0x04: p = "A2-BG"; break;
1034         case 0x05: p = "A2-DK1"; break;
1035         case 0x06: p = "A2-DK2"; break;
1036         case 0x07: p = "A2-DK3"; break;
1037         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
1038         case 0x09: p = "AM-L"; break;
1039         case 0x0a: p = "NICAM-BG"; break;
1040         case 0x0b: p = "NICAM-DK"; break;
1041         case 0x0c: p = "NICAM-I"; break;
1042         case 0x0d: p = "NICAM-L"; break;
1043         case 0x0e: p = "FM radio"; break;
1044         case 0x0f: p = "automatic detection"; break;
1045         default: p = "undefined";
1046         }
1047         v4l_info(client, "Configured audio standard: %s\n", p);
1048
1049         if ((audio_config >> 4) < 0xF) {
1050                 switch (audio_config & 0xF) {
1051                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
1052                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
1053                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
1054                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
1055                 case 0x04: p = "STEREO"; break;
1056                 case 0x05: p = "DUAL1 (AB)"; break;
1057                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
1058                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
1059                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
1060                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
1061                 case 0x0a: p = "SAP"; break;
1062                 default: p = "undefined";
1063                 }
1064                 v4l_info(client, "Configured audio mode:     %s\n", p);
1065         } else {
1066                 switch (audio_config & 0xF) {
1067                 case 0x00: p = "BG"; break;
1068                 case 0x01: p = "DK1"; break;
1069                 case 0x02: p = "DK2"; break;
1070                 case 0x03: p = "DK3"; break;
1071                 case 0x04: p = "I"; break;
1072                 case 0x05: p = "L"; break;
1073                 case 0x06: p = "BTSC"; break;
1074                 case 0x07: p = "EIAJ"; break;
1075                 case 0x08: p = "A2-M"; break;
1076                 case 0x09: p = "FM Radio"; break;
1077                 case 0x0f: p = "automatic standard and mode detection"; break;
1078                 default: p = "undefined";
1079                 }
1080                 v4l_info(client, "Configured audio system:   %s\n", p);
1081         }
1082
1083         v4l_info(client, "Specified standard:        %s\n",
1084                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
1085
1086         if (vid_input >= CX25840_COMPOSITE1 &&
1087             vid_input <= CX25840_COMPOSITE8) {
1088                 v4l_info(client, "Specified video input:     Composite %d\n",
1089                         vid_input - CX25840_COMPOSITE1 + 1);
1090         } else {
1091                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
1092                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
1093         }
1094         if (aud_input) {
1095                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
1096         } else {
1097                 v4l_info(client, "Specified audio input:     External\n");
1098         }
1099
1100         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
1101
1102         switch (pref_mode & 0xf) {
1103         case 0: p = "mono/language A"; break;
1104         case 1: p = "language B"; break;
1105         case 2: p = "language C"; break;
1106         case 3: p = "analog fallback"; break;
1107         case 4: p = "stereo"; break;
1108         case 5: p = "language AC"; break;
1109         case 6: p = "language BC"; break;
1110         case 7: p = "language AB"; break;
1111         default: p = "undefined";
1112         }
1113         v4l_info(client, "Preferred audio mode:      %s\n", p);
1114
1115         if ((audio_config & 0xf) == 0xf) {
1116                 switch ((afc0 >> 3) & 0x3) {
1117                 case 0: p = "system DK"; break;
1118                 case 1: p = "system L"; break;
1119                 case 2: p = "autodetect"; break;
1120                 default: p = "undefined";
1121                 }
1122                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
1123
1124                 switch (afc0 & 0x7) {
1125                 case 0: p = "chroma"; break;
1126                 case 1: p = "BTSC"; break;
1127                 case 2: p = "EIAJ"; break;
1128                 case 3: p = "A2-M"; break;
1129                 case 4: p = "autodetect"; break;
1130                 default: p = "undefined";
1131                 }
1132                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
1133         }
1134 }