err.no Git - linux-2.6/blob - 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 int cx25840_debug = 0;
  47
  48 module_param(cx25840_debug, bool, 0644);
  49
  50 MODULE_PARM_DESC(cx25840_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 inline 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 inline 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                 /* NTSC */
 224                 if (state->pvr150_workaround) {
 225                         /* Certain Hauppauge PVR150 models have a hardware bug
 226                            that causes audio to drop out. For these models the
 227                            audio standard must be set explicitly.
 228                            To be precise: it affects cards with tuner models
 229                            85, 99 and 112 (model numbers from tveeprom). */
 230                         if (std == V4L2_STD_NTSC_M_JP) {
 231                                 /* Japan uses EIAJ audio standard */
 232                                 cx25840_write(client, 0x808, 0x2f);
 233                         } else {
 234                                 /* Others use the BTSC audio standard */
 235                                 cx25840_write(client, 0x808, 0x1f);
 236                         }
 237                         /* South Korea uses the A2-M (aka Zweiton M) audio
 238                            standard, and should set 0x808 to 0x3f, but I don't
 239                            know how to detect this. */
 240                 } else if (std == V4L2_STD_NTSC_M_JP) {
 241                         /* Japan uses EIAJ audio standard */
 242                         cx25840_write(client, 0x808, 0xf7);
 243                 } else {
 244                         /* Others use the BTSC audio standard */
 245                         cx25840_write(client, 0x808, 0xf6);
 246                 }
 247                 /* South Korea uses the A2-M (aka Zweiton M) audio standard,
 248                    and should set 0x808 to 0xf8, but I don't know how to
 249                    detect this. */
 250                 cx25840_write(client, 0x80b, 0x00);
 251         }
 252
 253         if (cx25840_read(client, 0x803) & 0x10) {
 254                 /* restart audio decoder microcontroller */
 255                 cx25840_and_or(client, 0x803, ~0x10, 0x00);
 256                 cx25840_and_or(client, 0x803, ~0x10, 0x10);
 257         }
 258 }
 259
 260 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 261                                                 enum cx25840_audio_input aud_input)
 262 {
 263         struct cx25840_state *state = i2c_get_clientdata(client);
 264         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
 265                            vid_input <= CX25840_COMPOSITE8);
 266         u8 reg;
 267
 268         cx25840_dbg("decoder set video input %d, audio input %d\n",
 269                         vid_input, aud_input);
 270
 271         if (is_composite) {
 272                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
 273         } else {
 274                 int luma = vid_input & 0xf0;
 275                 int chroma = vid_input & 0xf00;
 276
 277                 if ((vid_input & ~0xff0) ||
 278                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
 279                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
 280                         cx25840_err("0x%04x is not a valid video input!\n", vid_input);
 281                         return -EINVAL;
 282                 }
 283                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
 284                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
 285                         reg &= 0x3f;
 286                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
 287                 } else {
 288                         reg &= 0xcf;
 289                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
 290                 }
 291         }
 292
 293         switch (aud_input) {
 294         case CX25840_AUDIO_SERIAL:
 295                 /* do nothing, use serial audio input */
 296                 break;
 297         case CX25840_AUDIO4: reg &= ~0x30; break;
 298         case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
 299         case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
 300         case CX25840_AUDIO7: reg &= ~0xc0; break;
 301         case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
 302
 303         default:
 304                 cx25840_err("0x%04x is not a valid audio input!\n", aud_input);
 305                 return -EINVAL;
 306         }
 307
 308         cx25840_write(client, 0x103, reg);
 309         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
 310         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
 311         /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
 312         cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
 313         /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
 314         if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
 315                 cx25840_and_or(client, 0x102, ~0x4, 4);
 316         else
 317                 cx25840_and_or(client, 0x102, ~0x4, 0);
 318
 319         state->vid_input = vid_input;
 320         state->aud_input = aud_input;
 321         cx25840_audio_set_path(client);
 322         input_change(client);
 323         return 0;
 324 }
 325
 326 /* ----------------------------------------------------------------------- */
 327
 328 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
 329 {
 330         u8 fmt=0;       /* zero is autodetect */
 331
 332         /* First tests should be against specific std */
 333         if (std & V4L2_STD_NTSC_M_JP) {
 334                 fmt=0x2;
 335         } else if (std & V4L2_STD_NTSC_443) {
 336                 fmt=0x3;
 337         } else if (std & V4L2_STD_PAL_M) {
 338                 fmt=0x5;
 339         } else if (std & V4L2_STD_PAL_N) {
 340                 fmt=0x6;
 341         } else if (std & V4L2_STD_PAL_Nc) {
 342                 fmt=0x7;
 343         } else if (std & V4L2_STD_PAL_60) {
 344                 fmt=0x8;
 345         } else {
 346                 /* Then, test against generic ones */
 347                 if (std & V4L2_STD_NTSC) {
 348                         fmt=0x1;
 349                 } else if (std & V4L2_STD_PAL) {
 350                         fmt=0x4;
 351                 } else if (std & V4L2_STD_SECAM) {
 352                         fmt=0xc;
 353                 }
 354         }
 355
 356         cx25840_and_or(client, 0x400, ~0xf, fmt);
 357         cx25840_vbi_setup(client);
 358         return 0;
 359 }
 360
 361 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
 362 {
 363         /* check VID_FMT_SEL first */
 364         u8 fmt = cx25840_read(client, 0x400) & 0xf;
 365
 366         if (!fmt) {
 367                 /* check AFD_FMT_STAT if set to autodetect */
 368                 fmt = cx25840_read(client, 0x40d) & 0xf;
 369         }
 370
 371         switch (fmt) {
 372         case 0x1: return V4L2_STD_NTSC_M;
 373         case 0x2: return V4L2_STD_NTSC_M_JP;
 374         case 0x3: return V4L2_STD_NTSC_443;
 375         case 0x4: return V4L2_STD_PAL;
 376         case 0x5: return V4L2_STD_PAL_M;
 377         case 0x6: return V4L2_STD_PAL_N;
 378         case 0x7: return V4L2_STD_PAL_Nc;
 379         case 0x8: return V4L2_STD_PAL_60;
 380         case 0xc: return V4L2_STD_SECAM;
 381         default: return V4L2_STD_UNKNOWN;
 382         }
 383 }
 384
 385 /* ----------------------------------------------------------------------- */
 386
 387 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 388 {
 389         struct cx25840_state *state = i2c_get_clientdata(client);
 390
 391         switch (ctrl->id) {
 392         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 393                 state->pvr150_workaround = ctrl->value;
 394                 set_input(client, state->vid_input, state->aud_input);
 395                 break;
 396
 397         case V4L2_CID_BRIGHTNESS:
 398                 if (ctrl->value < 0 || ctrl->value > 255) {
 399                         cx25840_err("invalid brightness setting %d\n",
 400                                     ctrl->value);
 401                         return -ERANGE;
 402                 }
 403
 404                 cx25840_write(client, 0x414, ctrl->value - 128);
 405                 break;
 406
 407         case V4L2_CID_CONTRAST:
 408                 if (ctrl->value < 0 || ctrl->value > 127) {
 409                         cx25840_err("invalid contrast setting %d\n",
 410                                     ctrl->value);
 411                         return -ERANGE;
 412                 }
 413
 414                 cx25840_write(client, 0x415, ctrl->value << 1);
 415                 break;
 416
 417         case V4L2_CID_SATURATION:
 418                 if (ctrl->value < 0 || ctrl->value > 127) {
 419                         cx25840_err("invalid saturation setting %d\n",
 420                                     ctrl->value);
 421                         return -ERANGE;
 422                 }
 423
 424                 cx25840_write(client, 0x420, ctrl->value << 1);
 425                 cx25840_write(client, 0x421, ctrl->value << 1);
 426                 break;
 427
 428         case V4L2_CID_HUE:
 429                 if (ctrl->value < -127 || ctrl->value > 127) {
 430                         cx25840_err("invalid hue setting %d\n", ctrl->value);
 431                         return -ERANGE;
 432                 }
 433
 434                 cx25840_write(client, 0x422, ctrl->value);
 435                 break;
 436
 437         case V4L2_CID_AUDIO_VOLUME:
 438         case V4L2_CID_AUDIO_BASS:
 439         case V4L2_CID_AUDIO_TREBLE:
 440         case V4L2_CID_AUDIO_BALANCE:
 441         case V4L2_CID_AUDIO_MUTE:
 442                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 443         }
 444
 445         return 0;
 446 }
 447
 448 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 449 {
 450         struct cx25840_state *state = i2c_get_clientdata(client);
 451
 452         switch (ctrl->id) {
 453         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 454                 ctrl->value = state->pvr150_workaround;
 455                 break;
 456         case V4L2_CID_BRIGHTNESS:
 457                 ctrl->value = cx25840_read(client, 0x414) + 128;
 458                 break;
 459         case V4L2_CID_CONTRAST:
 460                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 461                 break;
 462         case V4L2_CID_SATURATION:
 463                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 464                 break;
 465         case V4L2_CID_HUE:
 466                 ctrl->value = cx25840_read(client, 0x422);
 467                 break;
 468         case V4L2_CID_AUDIO_VOLUME:
 469         case V4L2_CID_AUDIO_BASS:
 470         case V4L2_CID_AUDIO_TREBLE:
 471         case V4L2_CID_AUDIO_BALANCE:
 472         case V4L2_CID_AUDIO_MUTE:
 473                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 474         default:
 475                 return -EINVAL;
 476         }
 477
 478         return 0;
 479 }
 480
 481 /* ----------------------------------------------------------------------- */
 482
 483 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 484 {
 485         switch (fmt->type) {
 486         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 487                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 488         default:
 489                 return -EINVAL;
 490         }
 491
 492         return 0;
 493 }
 494
 495 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 496 {
 497         struct v4l2_pix_format *pix;
 498         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 499         int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);
 500
 501         switch (fmt->type) {
 502         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 503                 pix = &(fmt->fmt.pix);
 504
 505                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 506                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 507
 508                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 509                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 510
 511                 Vlines = pix->height + (is_pal ? 4 : 7);
 512
 513                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 514                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 515                         cx25840_err("%dx%d is not a valid size!\n",
 516                                     pix->width, pix->height);
 517                         return -ERANGE;
 518                 }
 519
 520                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 521                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 522                 VSC &= 0x1fff;
 523
 524                 if (pix->width >= 385)
 525                         filter = 0;
 526                 else if (pix->width > 192)
 527                         filter = 1;
 528                 else if (pix->width > 96)
 529                         filter = 2;
 530                 else
 531                         filter = 3;
 532
 533                 cx25840_dbg("decoder set size %dx%d -> scale  %ux%u\n",
 534                             pix->width, pix->height, HSC, VSC);
 535
 536                 /* HSCALE=HSC */
 537                 cx25840_write(client, 0x418, HSC & 0xff);
 538                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 539                 cx25840_write(client, 0x41a, HSC >> 16);
 540                 /* VSCALE=VSC */
 541                 cx25840_write(client, 0x41c, VSC & 0xff);
 542                 cx25840_write(client, 0x41d, VSC >> 8);
 543                 /* VS_INTRLACE=1 VFILT=filter */
 544                 cx25840_write(client, 0x41e, 0x8 | filter);
 545                 break;
 546
 547         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 548                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 549
 550         case V4L2_BUF_TYPE_VBI_CAPTURE:
 551                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 552
 553         default:
 554                 return -EINVAL;
 555         }
 556
 557         return 0;
 558 }
 559
 560 /* ----------------------------------------------------------------------- */
 561
 562 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 563                            void *arg)
 564 {
 565         struct cx25840_state *state = i2c_get_clientdata(client);
 566         struct v4l2_tuner *vt = arg;
 567         int result = 0;
 568
 569         switch (cmd) {
 570         case 0:
 571                 break;
 572
 573 #ifdef CONFIG_VIDEO_ADV_DEBUG
 574         /* ioctls to allow direct access to the
 575          * cx25840 registers for testing */
 576         case VIDIOC_INT_G_REGISTER:
 577         {
 578                 struct v4l2_register *reg = arg;
 579
 580                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 581                         return -EINVAL;
 582                 reg->val = cx25840_read(client, reg->reg & 0x0fff);
 583                 break;
 584         }
 585
 586         case VIDIOC_INT_S_REGISTER:
 587         {
 588                 struct v4l2_register *reg = arg;
 589
 590                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
 591                         return -EINVAL;
 592                 if (!capable(CAP_SYS_ADMIN))
 593                         return -EPERM;
 594                 cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 595                 break;
 596         }
 597 #endif
 598
 599         case VIDIOC_INT_DECODE_VBI_LINE:
 600                 return cx25840_vbi(client, cmd, arg);
 601
 602         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 603                 result = cx25840_audio(client, cmd, arg);
 604                 break;
 605
 606         case VIDIOC_STREAMON:
 607                 cx25840_dbg("enable output\n");
 608                 cx25840_write(client, 0x115, 0x8c);
 609                 cx25840_write(client, 0x116, 0x07);
 610                 break;
 611
 612         case VIDIOC_STREAMOFF:
 613                 cx25840_dbg("disable output\n");
 614                 cx25840_write(client, 0x115, 0x00);
 615                 cx25840_write(client, 0x116, 0x00);
 616                 break;
 617
 618         case VIDIOC_LOG_STATUS:
 619                 log_status(client);
 620                 break;
 621
 622         case VIDIOC_G_CTRL:
 623                 result = get_v4lctrl(client, (struct v4l2_control *)arg);
 624                 break;
 625
 626         case VIDIOC_S_CTRL:
 627                 result = set_v4lctrl(client, (struct v4l2_control *)arg);
 628                 break;
 629
 630         case VIDIOC_G_STD:
 631                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
 632                 break;
 633
 634         case VIDIOC_S_STD:
 635                 result = set_v4lstd(client, *(v4l2_std_id *)arg);
 636                 break;
 637
 638         case VIDIOC_G_INPUT:
 639                 *(int *)arg = state->vid_input;
 640                 break;
 641
 642         case VIDIOC_S_INPUT:
 643                 result = set_input(client, *(enum cx25840_video_input *)arg, state->aud_input);
 644                 break;
 645
 646         case VIDIOC_S_AUDIO:
 647         {
 648                 struct v4l2_audio *input = arg;
 649
 650                 result = set_input(client, state->vid_input, input->index);
 651                 break;
 652         }
 653
 654         case VIDIOC_G_AUDIO:
 655         {
 656                 struct v4l2_audio *input = arg;
 657
 658                 memset(input, 0, sizeof(*input));
 659                 input->index = state->aud_input;
 660                 break;
 661         }
 662
 663         case VIDIOC_S_FREQUENCY:
 664                 input_change(client);
 665                 break;
 666
 667         case VIDIOC_G_TUNER:
 668         {
 669                 u8 mode = cx25840_read(client, 0x804);
 670                 u8 pref = cx25840_read(client, 0x809) & 0xf;
 671                 u8 vpres = cx25840_read(client, 0x80a) & 0x10;
 672                 int val = 0;
 673
 674                 vt->capability |=
 675                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
 676                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
 677
 678                 vt->signal = vpres ? 0xffff : 0x0;
 679
 680                 /* get rxsubchans and audmode */
 681                 if ((mode & 0xf) == 1)
 682                         val |= V4L2_TUNER_SUB_STEREO;
 683                 else
 684                         val |= V4L2_TUNER_SUB_MONO;
 685
 686                 if (mode == 2 || mode == 4)
 687                         val |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 688
 689                 if (mode & 0x10)
 690                         val |= V4L2_TUNER_SUB_SAP;
 691
 692                 vt->rxsubchans = val;
 693
 694                 switch (pref) {
 695                 case 0:
 696                         vt->audmode = V4L2_TUNER_MODE_MONO;
 697                         break;
 698                 case 1:
 699                 case 2:
 700                         vt->audmode = V4L2_TUNER_MODE_LANG2;
 701                         break;
 702                 case 4:
 703                 default:
 704                         vt->audmode = V4L2_TUNER_MODE_STEREO;
 705                 }
 706                 break;
 707         }
 708
 709         case VIDIOC_S_TUNER:
 710                 switch (vt->audmode) {
 711                 case V4L2_TUNER_MODE_MONO:
 712                 case V4L2_TUNER_MODE_LANG1:
 713                         /* Force PREF_MODE to MONO */
 714                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
 715                         break;
 716                 case V4L2_TUNER_MODE_STEREO:
 717                         /* Force PREF_MODE to STEREO */
 718                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
 719                         break;
 720                 case V4L2_TUNER_MODE_LANG2:
 721                         /* Force PREF_MODE to LANG2 */
 722                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
 723                         break;
 724                 }
 725                 break;
 726
 727         case VIDIOC_G_FMT:
 728                 result = get_v4lfmt(client, (struct v4l2_format *)arg);
 729                 break;
 730
 731         case VIDIOC_S_FMT:
 732                 result = set_v4lfmt(client, (struct v4l2_format *)arg);
 733                 break;
 734
 735         case VIDIOC_INT_RESET:
 736                 cx25840_initialize(client, 0);
 737                 break;
 738
 739         case VIDIOC_INT_G_CHIP_IDENT:
 740                 *(enum v4l2_chip_ident *)arg =
 741                         V4L2_IDENT_CX25840 + ((cx25840_read(client, 0x100) >> 4) & 0xf);
 742                 break;
 743
 744         default:
 745                 cx25840_err("invalid ioctl %x\n", cmd);
 746                 return -EINVAL;
 747         }
 748
 749         return result;
 750 }
 751
 752 /* ----------------------------------------------------------------------- */
 753
 754 static struct i2c_driver i2c_driver_cx25840;
 755
 756 static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
 757                                  int kind)
 758 {
 759         struct i2c_client *client;
 760         struct cx25840_state *state;
 761         u16 device_id;
 762
 763         /* Check if the adapter supports the needed features
 764          * Not until kernel version 2.6.11 did the bit-algo
 765          * correctly report that it would do an I2C-level xfer */
 766         if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
 767                 return 0;
 768
 769         client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
 770         if (client == 0)
 771                 return -ENOMEM;
 772
 773         memset(client, 0, sizeof(struct i2c_client));
 774         client->addr = address;
 775         client->adapter = adapter;
 776         client->driver = &i2c_driver_cx25840;
 777         snprintf(client->name, sizeof(client->name) - 1, "cx25840");
 778
 779         cx25840_dbg("detecting cx25840 client on address 0x%x\n", address << 1);
 780
 781         device_id = cx25840_read(client, 0x101) << 8;
 782         device_id |= cx25840_read(client, 0x100);
 783
 784         /* The high byte of the device ID should be
 785          * 0x84 if chip is present */
 786         if ((device_id & 0xff00) != 0x8400) {
 787                 cx25840_dbg("cx25840 not found\n");
 788                 kfree(client);
 789                 return 0;
 790         }
 791
 792         cx25840_info("cx25%3x-2%x found @ 0x%x (%s)\n",
 793                     (device_id & 0xfff0) >> 4,
 794                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : 3,
 795                     address << 1, adapter->name);
 796
 797         state = kmalloc(sizeof(struct cx25840_state), GFP_KERNEL);
 798         if (state == NULL) {
 799                 kfree(client);
 800                 return -ENOMEM;
 801         }
 802
 803         i2c_set_clientdata(client, state);
 804         memset(state, 0, sizeof(struct cx25840_state));
 805         state->vid_input = CX25840_COMPOSITE7;
 806         state->aud_input = CX25840_AUDIO8;
 807         state->audclk_freq = 48000;
 808         state->pvr150_workaround = 0;
 809
 810         cx25840_initialize(client, 1);
 811
 812         i2c_attach_client(client);
 813
 814         return 0;
 815 }
 816
 817 static int cx25840_attach_adapter(struct i2c_adapter *adapter)
 818 {
 819         if (adapter->class & I2C_CLASS_TV_ANALOG)
 820                 return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
 821         return 0;
 822 }
 823
 824 static int cx25840_detach_client(struct i2c_client *client)
 825 {
 826         struct cx25840_state *state = i2c_get_clientdata(client);
 827         int err;
 828
 829         err = i2c_detach_client(client);
 830         if (err) {
 831                 return err;
 832         }
 833
 834         kfree(state);
 835         kfree(client);
 836
 837         return 0;
 838 }
 839
 840 /* ----------------------------------------------------------------------- */
 841
 842 static struct i2c_driver i2c_driver_cx25840 = {
 843         .driver = {
 844                 .name = "cx25840",
 845         },
 846
 847         .id = I2C_DRIVERID_CX25840,
 848
 849         .attach_adapter = cx25840_attach_adapter,
 850         .detach_client = cx25840_detach_client,
 851         .command = cx25840_command,
 852 };
 853
 854
 855 static int __init m__init(void)
 856 {
 857         return i2c_add_driver(&i2c_driver_cx25840);
 858 }
 859
 860 static void __exit m__exit(void)
 861 {
 862         i2c_del_driver(&i2c_driver_cx25840);
 863 }
 864
 865 module_init(m__init);
 866 module_exit(m__exit);
 867
 868 /* ----------------------------------------------------------------------- */
 869
 870 static void log_status(struct i2c_client *client)
 871 {
 872         static const char *const fmt_strs[] = {
 873                 "0x0",
 874                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 875                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 876                 "0x9", "0xA", "0xB",
 877                 "SECAM",
 878                 "0xD", "0xE", "0xF"
 879         };
 880
 881         struct cx25840_state *state = i2c_get_clientdata(client);
 882         u8 microctrl_vidfmt = cx25840_read(client, 0x80a);
 883         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
 884         u8 gen_stat1 = cx25840_read(client, 0x40d);
 885         u8 download_ctl = cx25840_read(client, 0x803);
 886         u8 mod_det_stat0 = cx25840_read(client, 0x804);
 887         u8 mod_det_stat1 = cx25840_read(client, 0x805);
 888         u8 audio_config = cx25840_read(client, 0x808);
 889         u8 pref_mode = cx25840_read(client, 0x809);
 890         u8 afc0 = cx25840_read(client, 0x80b);
 891         u8 mute_ctl = cx25840_read(client, 0x8d3);
 892         int vid_input = state->vid_input;
 893         int aud_input = state->aud_input;
 894         char *p;
 895
 896         cx25840_info("Video signal:              %spresent\n",
 897                     (microctrl_vidfmt & 0x10) ? "" : "not ");
 898         cx25840_info("Detected format:           %s\n",
 899                     fmt_strs[gen_stat1 & 0xf]);
 900
 901         switch (mod_det_stat0) {
 902         case 0x00: p = "mono"; break;
 903         case 0x01: p = "stereo"; break;
 904         case 0x02: p = "dual"; break;
 905         case 0x04: p = "tri"; break;
 906         case 0x10: p = "mono with SAP"; break;
 907         case 0x11: p = "stereo with SAP"; break;
 908         case 0x12: p = "dual with SAP"; break;
 909         case 0x14: p = "tri with SAP"; break;
 910         case 0xfe: p = "forced mode"; break;
 911         default: p = "not defined";
 912         }
 913         cx25840_info("Detected audio mode:       %s\n", p);
 914
 915         switch (mod_det_stat1) {
 916         case 0x00: p = "not defined"; break;
 917         case 0x01: p = "EIAJ"; break;
 918         case 0x02: p = "A2-M"; break;
 919         case 0x03: p = "A2-BG"; break;
 920         case 0x04: p = "A2-DK1"; break;
 921         case 0x05: p = "A2-DK2"; break;
 922         case 0x06: p = "A2-DK3"; break;
 923         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
 924         case 0x08: p = "AM-L"; break;
 925         case 0x09: p = "NICAM-BG"; break;
 926         case 0x0a: p = "NICAM-DK"; break;
 927         case 0x0b: p = "NICAM-I"; break;
 928         case 0x0c: p = "NICAM-L"; break;
 929         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
 930         case 0x0e: p = "IF FM Radio"; break;
 931         case 0x0f: p = "BTSC"; break;
 932         case 0x10: p = "high-deviation FM"; break;
 933         case 0x11: p = "very high-deviation FM"; break;
 934         case 0xfd: p = "unknown audio standard"; break;
 935         case 0xfe: p = "forced audio standard"; break;
 936         case 0xff: p = "no detected audio standard"; break;
 937         default: p = "not defined";
 938         }
 939         cx25840_info("Detected audio standard:   %s\n", p);
 940         cx25840_info("Audio muted:               %s\n",
 941                     (mute_ctl & 0x2) ? "yes" : "no");
 942         cx25840_info("Audio microcontroller:     %s\n",
 943                     (download_ctl & 0x10) ? "running" : "stopped");
 944
 945         switch (audio_config >> 4) {
 946         case 0x00: p = "undefined"; break;
 947         case 0x01: p = "BTSC"; break;
 948         case 0x02: p = "EIAJ"; break;
 949         case 0x03: p = "A2-M"; break;
 950         case 0x04: p = "A2-BG"; break;
 951         case 0x05: p = "A2-DK1"; break;
 952         case 0x06: p = "A2-DK2"; break;
 953         case 0x07: p = "A2-DK3"; break;
 954         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
 955         case 0x09: p = "AM-L"; break;
 956         case 0x0a: p = "NICAM-BG"; break;
 957         case 0x0b: p = "NICAM-DK"; break;
 958         case 0x0c: p = "NICAM-I"; break;
 959         case 0x0d: p = "NICAM-L"; break;
 960         case 0x0e: p = "FM radio"; break;
 961         case 0x0f: p = "automatic detection"; break;
 962         default: p = "undefined";
 963         }
 964         cx25840_info("Configured audio standard: %s\n", p);
 965
 966         if ((audio_config >> 4) < 0xF) {
 967                 switch (audio_config & 0xF) {
 968                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
 969                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
 970                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
 971                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
 972                 case 0x04: p = "STEREO"; break;
 973                 case 0x05: p = "DUAL1 (AB)"; break;
 974                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
 975                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
 976                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
 977                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
 978                 case 0x0a: p = "SAP"; break;
 979                 default: p = "undefined";
 980                 }
 981                 cx25840_info("Configured audio mode:     %s\n", p);
 982         } else {
 983                 switch (audio_config & 0xF) {
 984                 case 0x00: p = "BG"; break;
 985                 case 0x01: p = "DK1"; break;
 986                 case 0x02: p = "DK2"; break;
 987                 case 0x03: p = "DK3"; break;
 988                 case 0x04: p = "I"; break;
 989                 case 0x05: p = "L"; break;
 990                 case 0x06: p = "BTSC"; break;
 991                 case 0x07: p = "EIAJ"; break;
 992                 case 0x08: p = "A2-M"; break;
 993                 case 0x09: p = "FM Radio"; break;
 994                 case 0x0f: p = "automatic standard and mode detection"; break;
 995                 default: p = "undefined";
 996                 }
 997                 cx25840_info("Configured audio system:   %s\n", p);
 998         }
 999
1000         cx25840_info("Specified standard:        %s\n",
1001                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
1002
1003         if (vid_input >= CX25840_COMPOSITE1 &&
1004             vid_input <= CX25840_COMPOSITE8) {
1005                 cx25840_info("Specified video input:     Composite %d\n",
1006                         vid_input - CX25840_COMPOSITE1 + 1);
1007         } else {
1008                 cx25840_info("Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
1009                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
1010         }
1011         if (aud_input) {
1012                 cx25840_info("Specified audio input:     Tuner (In%d)\n", aud_input);
1013         } else {
1014                 cx25840_info("Specified audio input:     External\n");
1015         }
1016
1017         cx25840_info("Specified audioclock freq: %d Hz\n", state->audclk_freq);
1018
1019         switch (pref_mode & 0xf) {
1020         case 0: p = "mono/language A"; break;
1021         case 1: p = "language B"; break;
1022         case 2: p = "language C"; break;
1023         case 3: p = "analog fallback"; break;
1024         case 4: p = "stereo"; break;
1025         case 5: p = "language AC"; break;
1026         case 6: p = "language BC"; break;
1027         case 7: p = "language AB"; break;
1028         default: p = "undefined";
1029         }
1030         cx25840_info("Preferred audio mode:      %s\n", p);
1031
1032         if ((audio_config & 0xf) == 0xf) {
1033                 switch ((afc0 >> 3) & 0x3) {
1034                 case 0: p = "system DK"; break;
1035                 case 1: p = "system L"; break;
1036                 case 2: p = "autodetect"; break;
1037                 default: p = "undefined";
1038                 }
1039                 cx25840_info("Selected 65 MHz format:    %s\n", p);
1040
1041                 switch (afc0 & 0x7) {
1042                 case 0: p = "chroma"; break;
1043                 case 1: p = "BTSC"; break;
1044                 case 2: p = "EIAJ"; break;
1045                 case 3: p = "A2-M"; break;
1046                 case 4: p = "autodetect"; break;
1047                 default: p = "undefined";
1048                 }
1049                 cx25840_info("Selected 45 MHz format:    %s\n", p);
1050         }
1051 }