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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  * CX23885 support by Steven Toth <stoth@hauppauge.com>.
  17  *
  18  * This program is free software; you can redistribute it and/or
  19  * modify it under the terms of the GNU General Public License
  20  * as published by the Free Software Foundation; either version 2
  21  * of the License, or (at your option) any later version.
  22  *
  23  * This program is distributed in the hope that it will be useful,
  24  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26  * GNU General Public License for more details.
  27  *
  28  * You should have received a copy of the GNU General Public License
  29  * along with this program; if not, write to the Free Software
  30  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  31  */
  32
  33
  34 #include <linux/kernel.h>
  35 #include <linux/module.h>
  36 #include <linux/slab.h>
  37 #include <linux/videodev2.h>
  38 #include <linux/i2c.h>
  39 #include <linux/delay.h>
  40 #include <media/v4l2-common.h>
  41 #include <media/v4l2-chip-ident.h>
  42 #include <media/v4l2-i2c-drv-legacy.h>
  43 #include <media/cx25840.h>
  44
  45 #include "cx25840-core.h"
  46
  47 MODULE_DESCRIPTION("Conexant CX25840 audio/video decoder driver");
  48 MODULE_AUTHOR("Ulf Eklund, Chris Kennedy, Hans Verkuil, Tyler Trafford");
  49 MODULE_LICENSE("GPL");
  50
  51 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
  52
  53
  54 int cx25840_debug;
  55
  56 module_param_named(debug,cx25840_debug, int, 0644);
  57
  58 MODULE_PARM_DESC(debug, "Debugging messages [0=Off (default) 1=On]");
  59
  60 I2C_CLIENT_INSMOD;
  61
  62 /* ----------------------------------------------------------------------- */
  63
  64 int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
  65 {
  66         u8 buffer[3];
  67         buffer[0] = addr >> 8;
  68         buffer[1] = addr & 0xff;
  69         buffer[2] = value;
  70         return i2c_master_send(client, buffer, 3);
  71 }
  72
  73 int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
  74 {
  75         u8 buffer[6];
  76         buffer[0] = addr >> 8;
  77         buffer[1] = addr & 0xff;
  78         buffer[2] = value & 0xff;
  79         buffer[3] = (value >> 8) & 0xff;
  80         buffer[4] = (value >> 16) & 0xff;
  81         buffer[5] = value >> 24;
  82         return i2c_master_send(client, buffer, 6);
  83 }
  84
  85 u8 cx25840_read(struct i2c_client * client, u16 addr)
  86 {
  87         u8 buffer[2];
  88         buffer[0] = addr >> 8;
  89         buffer[1] = addr & 0xff;
  90
  91         if (i2c_master_send(client, buffer, 2) < 2)
  92                 return 0;
  93
  94         if (i2c_master_recv(client, buffer, 1) < 1)
  95                 return 0;
  96
  97         return buffer[0];
  98 }
  99
 100 u32 cx25840_read4(struct i2c_client * client, u16 addr)
 101 {
 102         u8 buffer[4];
 103         buffer[0] = addr >> 8;
 104         buffer[1] = addr & 0xff;
 105
 106         if (i2c_master_send(client, buffer, 2) < 2)
 107                 return 0;
 108
 109         if (i2c_master_recv(client, buffer, 4) < 4)
 110                 return 0;
 111
 112         return (buffer[3] << 24) | (buffer[2] << 16) |
 113             (buffer[1] << 8) | buffer[0];
 114 }
 115
 116 int cx25840_and_or(struct i2c_client *client, u16 addr, unsigned and_mask,
 117                    u8 or_value)
 118 {
 119         return cx25840_write(client, addr,
 120                              (cx25840_read(client, addr) & and_mask) |
 121                              or_value);
 122 }
 123
 124 /* ----------------------------------------------------------------------- */
 125
 126 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 127                                                 enum cx25840_audio_input aud_input);
 128
 129 /* ----------------------------------------------------------------------- */
 130
 131 static void init_dll1(struct i2c_client *client)
 132 {
 133         /* This is the Hauppauge sequence used to
 134          * initialize the Delay Lock Loop 1 (ADC DLL). */
 135         cx25840_write(client, 0x159, 0x23);
 136         cx25840_write(client, 0x15a, 0x87);
 137         cx25840_write(client, 0x15b, 0x06);
 138         udelay(10);
 139         cx25840_write(client, 0x159, 0xe1);
 140         udelay(10);
 141         cx25840_write(client, 0x15a, 0x86);
 142         cx25840_write(client, 0x159, 0xe0);
 143         cx25840_write(client, 0x159, 0xe1);
 144         cx25840_write(client, 0x15b, 0x10);
 145 }
 146
 147 static void init_dll2(struct i2c_client *client)
 148 {
 149         /* This is the Hauppauge sequence used to
 150          * initialize the Delay Lock Loop 2 (ADC DLL). */
 151         cx25840_write(client, 0x15d, 0xe3);
 152         cx25840_write(client, 0x15e, 0x86);
 153         cx25840_write(client, 0x15f, 0x06);
 154         udelay(10);
 155         cx25840_write(client, 0x15d, 0xe1);
 156         cx25840_write(client, 0x15d, 0xe0);
 157         cx25840_write(client, 0x15d, 0xe1);
 158 }
 159
 160 static void cx25836_initialize(struct i2c_client *client)
 161 {
 162         /* reset configuration is described on page 3-77 of the CX25836 datasheet */
 163         /* 2. */
 164         cx25840_and_or(client, 0x000, ~0x01, 0x01);
 165         cx25840_and_or(client, 0x000, ~0x01, 0x00);
 166         /* 3a. */
 167         cx25840_and_or(client, 0x15a, ~0x70, 0x00);
 168         /* 3b. */
 169         cx25840_and_or(client, 0x15b, ~0x1e, 0x06);
 170         /* 3c. */
 171         cx25840_and_or(client, 0x159, ~0x02, 0x02);
 172         /* 3d. */
 173         udelay(10);
 174         /* 3e. */
 175         cx25840_and_or(client, 0x159, ~0x02, 0x00);
 176         /* 3f. */
 177         cx25840_and_or(client, 0x159, ~0xc0, 0xc0);
 178         /* 3g. */
 179         cx25840_and_or(client, 0x159, ~0x01, 0x00);
 180         cx25840_and_or(client, 0x159, ~0x01, 0x01);
 181         /* 3h. */
 182         cx25840_and_or(client, 0x15b, ~0x1e, 0x10);
 183 }
 184
 185 static void cx25840_work_handler(struct work_struct *work)
 186 {
 187         struct cx25840_state *state = container_of(work, struct cx25840_state, fw_work);
 188         cx25840_loadfw(state->c);
 189         wake_up(&state->fw_wait);
 190 }
 191
 192 static void cx25840_initialize(struct i2c_client *client)
 193 {
 194         DEFINE_WAIT(wait);
 195         struct cx25840_state *state = i2c_get_clientdata(client);
 196         struct workqueue_struct *q;
 197
 198         /* datasheet startup in numbered steps, refer to page 3-77 */
 199         /* 2. */
 200         cx25840_and_or(client, 0x803, ~0x10, 0x00);
 201         /* The default of this register should be 4, but I get 0 instead.
 202          * Set this register to 4 manually. */
 203         cx25840_write(client, 0x000, 0x04);
 204         /* 3. */
 205         init_dll1(client);
 206         init_dll2(client);
 207         cx25840_write(client, 0x136, 0x0a);
 208         /* 4. */
 209         cx25840_write(client, 0x13c, 0x01);
 210         cx25840_write(client, 0x13c, 0x00);
 211         /* 5. */
 212         /* Do the firmware load in a work handler to prevent.
 213            Otherwise the kernel is blocked waiting for the
 214            bit-banging i2c interface to finish uploading the
 215            firmware. */
 216         INIT_WORK(&state->fw_work, cx25840_work_handler);
 217         init_waitqueue_head(&state->fw_wait);
 218         q = create_singlethread_workqueue("cx25840_fw");
 219         prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
 220         queue_work(q, &state->fw_work);
 221         schedule();
 222         finish_wait(&state->fw_wait, &wait);
 223         destroy_workqueue(q);
 224
 225         /* 6. */
 226         cx25840_write(client, 0x115, 0x8c);
 227         cx25840_write(client, 0x116, 0x07);
 228         cx25840_write(client, 0x118, 0x02);
 229         /* 7. */
 230         cx25840_write(client, 0x4a5, 0x80);
 231         cx25840_write(client, 0x4a5, 0x00);
 232         cx25840_write(client, 0x402, 0x00);
 233         /* 8. */
 234         cx25840_and_or(client, 0x401, ~0x18, 0);
 235         cx25840_and_or(client, 0x4a2, ~0x10, 0x10);
 236         /* steps 8c and 8d are done in change_input() */
 237         /* 10. */
 238         cx25840_write(client, 0x8d3, 0x1f);
 239         cx25840_write(client, 0x8e3, 0x03);
 240
 241         cx25840_vbi_setup(client);
 242
 243         /* trial and error says these are needed to get audio */
 244         cx25840_write(client, 0x914, 0xa0);
 245         cx25840_write(client, 0x918, 0xa0);
 246         cx25840_write(client, 0x919, 0x01);
 247
 248         /* stereo prefered */
 249         cx25840_write(client, 0x809, 0x04);
 250         /* AC97 shift */
 251         cx25840_write(client, 0x8cf, 0x0f);
 252
 253         /* (re)set input */
 254         set_input(client, state->vid_input, state->aud_input);
 255
 256         /* start microcontroller */
 257         cx25840_and_or(client, 0x803, ~0x10, 0x10);
 258 }
 259
 260 static void cx23885_initialize(struct i2c_client *client)
 261 {
 262         DEFINE_WAIT(wait);
 263         struct cx25840_state *state = i2c_get_clientdata(client);
 264         struct workqueue_struct *q;
 265
 266         /* Internal Reset */
 267         cx25840_and_or(client, 0x102, ~0x01, 0x01);
 268         cx25840_and_or(client, 0x102, ~0x01, 0x00);
 269
 270         /* Stop microcontroller */
 271         cx25840_and_or(client, 0x803, ~0x10, 0x00);
 272
 273         /* DIF in reset? */
 274         cx25840_write(client, 0x398, 0);
 275
 276         /* Trust the default xtal, no division */
 277         /* This changes for the cx23888 products */
 278         cx25840_write(client, 0x2, 0x76);
 279
 280         /* Bring down the regulator for AUX clk */
 281         cx25840_write(client, 0x1, 0x40);
 282
 283         /* Sys PLL frac */
 284         cx25840_write4(client, 0x11c, 0x01d1744c);
 285
 286         /* Sys PLL int */
 287         cx25840_write4(client, 0x118, 0x00000416);
 288
 289         /* Disable DIF bypass */
 290         cx25840_write4(client, 0x33c, 0x00000001);
 291
 292         /* DIF Src phase inc */
 293         cx25840_write4(client, 0x340, 0x0df7df83);
 294
 295         /* Vid PLL frac */
 296         cx25840_write4(client, 0x10c, 0x01b6db7b);
 297
 298         /* Vid PLL int */
 299         cx25840_write4(client, 0x108, 0x00000512);
 300
 301         /* Luma */
 302         cx25840_write4(client, 0x414, 0x00107d12);
 303
 304         /* Chroma */
 305         cx25840_write4(client, 0x420, 0x3d008282);
 306
 307         /* Aux PLL frac */
 308         cx25840_write4(client, 0x114, 0x017dbf48);
 309
 310         /* Aux PLL int */
 311         cx25840_write4(client, 0x110, 0x000a030e);
 312
 313         /* ADC2 input select */
 314         cx25840_write(client, 0x102, 0x10);
 315
 316         /* VIN1 & VIN5 */
 317         cx25840_write(client, 0x103, 0x11);
 318
 319         /* Enable format auto detect */
 320         cx25840_write(client, 0x400, 0);
 321         /* Fast subchroma lock */
 322         /* White crush, Chroma AGC & Chroma Killer enabled */
 323         cx25840_write(client, 0x401, 0xe8);
 324
 325         /* Select AFE clock pad output source */
 326         cx25840_write(client, 0x144, 0x05);
 327
 328         /* Do the firmware load in a work handler to prevent.
 329            Otherwise the kernel is blocked waiting for the
 330            bit-banging i2c interface to finish uploading the
 331            firmware. */
 332         INIT_WORK(&state->fw_work, cx25840_work_handler);
 333         init_waitqueue_head(&state->fw_wait);
 334         q = create_singlethread_workqueue("cx25840_fw");
 335         prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
 336         queue_work(q, &state->fw_work);
 337         schedule();
 338         finish_wait(&state->fw_wait, &wait);
 339         destroy_workqueue(q);
 340
 341         cx25840_vbi_setup(client);
 342
 343         /* (re)set input */
 344         set_input(client, state->vid_input, state->aud_input);
 345
 346         /* start microcontroller */
 347         cx25840_and_or(client, 0x803, ~0x10, 0x10);
 348 }
 349
 350 /* ----------------------------------------------------------------------- */
 351
 352 static void input_change(struct i2c_client *client)
 353 {
 354         struct cx25840_state *state = i2c_get_clientdata(client);
 355         v4l2_std_id std = cx25840_get_v4lstd(client);
 356
 357         /* Follow step 8c and 8d of section 3.16 in the cx25840 datasheet */
 358         if (std & V4L2_STD_SECAM) {
 359                 cx25840_write(client, 0x402, 0);
 360         }
 361         else {
 362                 cx25840_write(client, 0x402, 0x04);
 363                 cx25840_write(client, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
 364         }
 365         cx25840_and_or(client, 0x401, ~0x60, 0);
 366         cx25840_and_or(client, 0x401, ~0x60, 0x60);
 367         cx25840_and_or(client, 0x810, ~0x01, 1);
 368
 369         if (state->radio) {
 370                 cx25840_write(client, 0x808, 0xf9);
 371                 cx25840_write(client, 0x80b, 0x00);
 372         }
 373         else if (std & V4L2_STD_525_60) {
 374                 /* Certain Hauppauge PVR150 models have a hardware bug
 375                    that causes audio to drop out. For these models the
 376                    audio standard must be set explicitly.
 377                    To be precise: it affects cards with tuner models
 378                    85, 99 and 112 (model numbers from tveeprom). */
 379                 int hw_fix = state->pvr150_workaround;
 380
 381                 if (std == V4L2_STD_NTSC_M_JP) {
 382                         /* Japan uses EIAJ audio standard */
 383                         cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
 384                 } else if (std == V4L2_STD_NTSC_M_KR) {
 385                         /* South Korea uses A2 audio standard */
 386                         cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
 387                 } else {
 388                         /* Others use the BTSC audio standard */
 389                         cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
 390                 }
 391                 cx25840_write(client, 0x80b, 0x00);
 392         } else if (std & V4L2_STD_PAL) {
 393                 /* Follow tuner change procedure for PAL */
 394                 cx25840_write(client, 0x808, 0xff);
 395                 cx25840_write(client, 0x80b, 0x10);
 396         } else if (std & V4L2_STD_SECAM) {
 397                 /* Select autodetect for SECAM */
 398                 cx25840_write(client, 0x808, 0xff);
 399                 cx25840_write(client, 0x80b, 0x10);
 400         }
 401
 402         cx25840_and_or(client, 0x810, ~0x01, 0);
 403 }
 404
 405 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 406                                                 enum cx25840_audio_input aud_input)
 407 {
 408         struct cx25840_state *state = i2c_get_clientdata(client);
 409         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
 410                            vid_input <= CX25840_COMPOSITE8);
 411         u8 reg;
 412
 413         v4l_dbg(1, cx25840_debug, client,
 414                 "decoder set video input %d, audio input %d\n",
 415                 vid_input, aud_input);
 416
 417         if (vid_input >= CX25840_VIN1_CH1) {
 418                 v4l_dbg(1, cx25840_debug, client, "vid_input 0x%x\n",
 419                         vid_input);
 420                 reg = vid_input & 0xff;
 421                 if ((vid_input & CX25840_SVIDEO_ON) == CX25840_SVIDEO_ON)
 422                         is_composite = 0;
 423                 else
 424                         is_composite = 1;
 425
 426                 v4l_dbg(1, cx25840_debug, client, "mux cfg 0x%x comp=%d\n",
 427                         reg, is_composite);
 428         } else
 429         if (is_composite) {
 430                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
 431         } else {
 432                 int luma = vid_input & 0xf0;
 433                 int chroma = vid_input & 0xf00;
 434
 435                 if ((vid_input & ~0xff0) ||
 436                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
 437                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
 438                         v4l_err(client, "0x%04x is not a valid video input!\n",
 439                                 vid_input);
 440                         return -EINVAL;
 441                 }
 442                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
 443                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
 444                         reg &= 0x3f;
 445                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
 446                 } else {
 447                         reg &= 0xcf;
 448                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
 449                 }
 450         }
 451
 452         /* The caller has previously prepared the correct routing
 453          * configuration in reg (for the cx23885) so we have no
 454          * need to attempt to flip bits for earlier av decoders.
 455          */
 456         if (!state->is_cx23885) {
 457                 switch (aud_input) {
 458                 case CX25840_AUDIO_SERIAL:
 459                         /* do nothing, use serial audio input */
 460                         break;
 461                 case CX25840_AUDIO4: reg &= ~0x30; break;
 462                 case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
 463                 case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
 464                 case CX25840_AUDIO7: reg &= ~0xc0; break;
 465                 case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
 466
 467                 default:
 468                         v4l_err(client, "0x%04x is not a valid audio input!\n",
 469                                 aud_input);
 470                         return -EINVAL;
 471                 }
 472         }
 473
 474         cx25840_write(client, 0x103, reg);
 475
 476         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
 477         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
 478
 479         if (!state->is_cx23885) {
 480                 /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
 481                 cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
 482                 /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2&CH3 */
 483                 if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
 484                         cx25840_and_or(client, 0x102, ~0x4, 4);
 485                 else
 486                         cx25840_and_or(client, 0x102, ~0x4, 0);
 487         } else {
 488                 if (is_composite)
 489                         /* ADC2 input select channel 2 */
 490                         cx25840_and_or(client, 0x102, ~0x2, 0);
 491                 else
 492                         /* ADC2 input select channel 3 */
 493                         cx25840_and_or(client, 0x102, ~0x2, 2);
 494         }
 495
 496         state->vid_input = vid_input;
 497         state->aud_input = aud_input;
 498         if (!state->is_cx25836) {
 499                 cx25840_audio_set_path(client);
 500                 input_change(client);
 501         }
 502
 503         if (state->is_cx23885) {
 504                 /* Audio channel 1 src : Parallel 1 */
 505                 cx25840_write(client, 0x124, 0x03);
 506
 507                 /* Select AFE clock pad output source */
 508                 cx25840_write(client, 0x144, 0x05);
 509
 510                 /* I2S_IN_CTL: I2S_IN_SONY_MODE, LEFT SAMPLE on WS=1 */
 511                 cx25840_write(client, 0x914, 0xa0);
 512
 513                 /* I2S_OUT_CTL:
 514                  * I2S_IN_SONY_MODE, LEFT SAMPLE on WS=1
 515                  * I2S_OUT_MASTER_MODE = Master
 516                  */
 517                 cx25840_write(client, 0x918, 0xa0);
 518                 cx25840_write(client, 0x919, 0x01);
 519         }
 520
 521         return 0;
 522 }
 523
 524 /* ----------------------------------------------------------------------- */
 525
 526 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
 527 {
 528         u8 fmt=0;       /* zero is autodetect */
 529
 530         /* First tests should be against specific std */
 531         if (std == V4L2_STD_NTSC_M_JP) {
 532                 fmt=0x2;
 533         } else if (std == V4L2_STD_NTSC_443) {
 534                 fmt=0x3;
 535         } else if (std == V4L2_STD_PAL_M) {
 536                 fmt=0x5;
 537         } else if (std == V4L2_STD_PAL_N) {
 538                 fmt=0x6;
 539         } else if (std == V4L2_STD_PAL_Nc) {
 540                 fmt=0x7;
 541         } else if (std == V4L2_STD_PAL_60) {
 542                 fmt=0x8;
 543         } else {
 544                 /* Then, test against generic ones */
 545                 if (std & V4L2_STD_NTSC) {
 546                         fmt=0x1;
 547                 } else if (std & V4L2_STD_PAL) {
 548                         fmt=0x4;
 549                 } else if (std & V4L2_STD_SECAM) {
 550                         fmt=0xc;
 551                 }
 552         }
 553
 554         v4l_dbg(1, cx25840_debug, client, "changing video std to fmt %i\n",fmt);
 555
 556         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
 557            Without this PAL may display a vertical ghosting effect.
 558            This happens for example with the Yuan MPC622. */
 559         if (fmt >= 4 && fmt < 8) {
 560                 /* Set format to NTSC-M */
 561                 cx25840_and_or(client, 0x400, ~0xf, 1);
 562                 /* Turn off LCOMB */
 563                 cx25840_and_or(client, 0x47b, ~6, 0);
 564         }
 565         cx25840_and_or(client, 0x400, ~0xf, fmt);
 566         cx25840_vbi_setup(client);
 567         return 0;
 568 }
 569
 570 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
 571 {
 572         struct cx25840_state *state = i2c_get_clientdata(client);
 573         /* check VID_FMT_SEL first */
 574         u8 fmt = cx25840_read(client, 0x400) & 0xf;
 575
 576         if (!fmt) {
 577                 /* check AFD_FMT_STAT if set to autodetect */
 578                 fmt = cx25840_read(client, 0x40d) & 0xf;
 579         }
 580
 581         switch (fmt) {
 582         case 0x1:
 583         {
 584                 /* if the audio std is A2-M, then this is the South Korean
 585                    NTSC standard */
 586                 if (!state->is_cx25836 && cx25840_read(client, 0x805) == 2)
 587                         return V4L2_STD_NTSC_M_KR;
 588                 return V4L2_STD_NTSC_M;
 589         }
 590         case 0x2: return V4L2_STD_NTSC_M_JP;
 591         case 0x3: return V4L2_STD_NTSC_443;
 592         case 0x4: return V4L2_STD_PAL;
 593         case 0x5: return V4L2_STD_PAL_M;
 594         case 0x6: return V4L2_STD_PAL_N;
 595         case 0x7: return V4L2_STD_PAL_Nc;
 596         case 0x8: return V4L2_STD_PAL_60;
 597         case 0xc: return V4L2_STD_SECAM;
 598         default: return V4L2_STD_UNKNOWN;
 599         }
 600 }
 601
 602 /* ----------------------------------------------------------------------- */
 603
 604 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 605 {
 606         struct cx25840_state *state = i2c_get_clientdata(client);
 607
 608         switch (ctrl->id) {
 609         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 610                 state->pvr150_workaround = ctrl->value;
 611                 set_input(client, state->vid_input, state->aud_input);
 612                 break;
 613
 614         case V4L2_CID_BRIGHTNESS:
 615                 if (ctrl->value < 0 || ctrl->value > 255) {
 616                         v4l_err(client, "invalid brightness setting %d\n",
 617                                     ctrl->value);
 618                         return -ERANGE;
 619                 }
 620
 621                 cx25840_write(client, 0x414, ctrl->value - 128);
 622                 break;
 623
 624         case V4L2_CID_CONTRAST:
 625                 if (ctrl->value < 0 || ctrl->value > 127) {
 626                         v4l_err(client, "invalid contrast setting %d\n",
 627                                     ctrl->value);
 628                         return -ERANGE;
 629                 }
 630
 631                 cx25840_write(client, 0x415, ctrl->value << 1);
 632                 break;
 633
 634         case V4L2_CID_SATURATION:
 635                 if (ctrl->value < 0 || ctrl->value > 127) {
 636                         v4l_err(client, "invalid saturation setting %d\n",
 637                                     ctrl->value);
 638                         return -ERANGE;
 639                 }
 640
 641                 cx25840_write(client, 0x420, ctrl->value << 1);
 642                 cx25840_write(client, 0x421, ctrl->value << 1);
 643                 break;
 644
 645         case V4L2_CID_HUE:
 646                 if (ctrl->value < -127 || ctrl->value > 127) {
 647                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
 648                         return -ERANGE;
 649                 }
 650
 651                 cx25840_write(client, 0x422, ctrl->value);
 652                 break;
 653
 654         case V4L2_CID_AUDIO_VOLUME:
 655         case V4L2_CID_AUDIO_BASS:
 656         case V4L2_CID_AUDIO_TREBLE:
 657         case V4L2_CID_AUDIO_BALANCE:
 658         case V4L2_CID_AUDIO_MUTE:
 659                 if (state->is_cx25836)
 660                         return -EINVAL;
 661                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 662
 663         default:
 664                 return -EINVAL;
 665         }
 666
 667         return 0;
 668 }
 669
 670 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 671 {
 672         struct cx25840_state *state = i2c_get_clientdata(client);
 673
 674         switch (ctrl->id) {
 675         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 676                 ctrl->value = state->pvr150_workaround;
 677                 break;
 678         case V4L2_CID_BRIGHTNESS:
 679                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
 680                 break;
 681         case V4L2_CID_CONTRAST:
 682                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 683                 break;
 684         case V4L2_CID_SATURATION:
 685                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 686                 break;
 687         case V4L2_CID_HUE:
 688                 ctrl->value = (s8)cx25840_read(client, 0x422);
 689                 break;
 690         case V4L2_CID_AUDIO_VOLUME:
 691         case V4L2_CID_AUDIO_BASS:
 692         case V4L2_CID_AUDIO_TREBLE:
 693         case V4L2_CID_AUDIO_BALANCE:
 694         case V4L2_CID_AUDIO_MUTE:
 695                 if (state->is_cx25836)
 696                         return -EINVAL;
 697                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 698         default:
 699                 return -EINVAL;
 700         }
 701
 702         return 0;
 703 }
 704
 705 /* ----------------------------------------------------------------------- */
 706
 707 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 708 {
 709         switch (fmt->type) {
 710         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 711                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 712         default:
 713                 return -EINVAL;
 714         }
 715
 716         return 0;
 717 }
 718
 719 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 720 {
 721         struct v4l2_pix_format *pix;
 722         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 723         int is_50Hz = !(cx25840_get_v4lstd(client) & V4L2_STD_525_60);
 724
 725         switch (fmt->type) {
 726         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 727                 pix = &(fmt->fmt.pix);
 728
 729                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 730                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 731
 732                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 733                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 734
 735                 Vlines = pix->height + (is_50Hz ? 4 : 7);
 736
 737                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 738                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 739                         v4l_err(client, "%dx%d is not a valid size!\n",
 740                                     pix->width, pix->height);
 741                         return -ERANGE;
 742                 }
 743
 744                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 745                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 746                 VSC &= 0x1fff;
 747
 748                 if (pix->width >= 385)
 749                         filter = 0;
 750                 else if (pix->width > 192)
 751                         filter = 1;
 752                 else if (pix->width > 96)
 753                         filter = 2;
 754                 else
 755                         filter = 3;
 756
 757                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
 758                             pix->width, pix->height, HSC, VSC);
 759
 760                 /* HSCALE=HSC */
 761                 cx25840_write(client, 0x418, HSC & 0xff);
 762                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 763                 cx25840_write(client, 0x41a, HSC >> 16);
 764                 /* VSCALE=VSC */
 765                 cx25840_write(client, 0x41c, VSC & 0xff);
 766                 cx25840_write(client, 0x41d, VSC >> 8);
 767                 /* VS_INTRLACE=1 VFILT=filter */
 768                 cx25840_write(client, 0x41e, 0x8 | filter);
 769                 break;
 770
 771         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 772                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 773
 774         case V4L2_BUF_TYPE_VBI_CAPTURE:
 775                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 776
 777         default:
 778                 return -EINVAL;
 779         }
 780
 781         return 0;
 782 }
 783
 784 /* ----------------------------------------------------------------------- */
 785
 786 static void log_video_status(struct i2c_client *client)
 787 {
 788         static const char *const fmt_strs[] = {
 789                 "0x0",
 790                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 791                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 792                 "0x9", "0xA", "0xB",
 793                 "SECAM",
 794                 "0xD", "0xE", "0xF"
 795         };
 796
 797         struct cx25840_state *state = i2c_get_clientdata(client);
 798         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
 799         u8 gen_stat1 = cx25840_read(client, 0x40d);
 800         u8 gen_stat2 = cx25840_read(client, 0x40e);
 801         int vid_input = state->vid_input;
 802
 803         v4l_info(client, "Video signal:              %spresent\n",
 804                     (gen_stat2 & 0x20) ? "" : "not ");
 805         v4l_info(client, "Detected format:           %s\n",
 806                     fmt_strs[gen_stat1 & 0xf]);
 807
 808         v4l_info(client, "Specified standard:        %s\n",
 809                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
 810
 811         if (vid_input >= CX25840_COMPOSITE1 &&
 812             vid_input <= CX25840_COMPOSITE8) {
 813                 v4l_info(client, "Specified video input:     Composite %d\n",
 814                         vid_input - CX25840_COMPOSITE1 + 1);
 815         } else {
 816                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
 817                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
 818         }
 819
 820         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
 821 }
 822
 823 /* ----------------------------------------------------------------------- */
 824
 825 static void log_audio_status(struct i2c_client *client)
 826 {
 827         struct cx25840_state *state = i2c_get_clientdata(client);
 828         u8 download_ctl = cx25840_read(client, 0x803);
 829         u8 mod_det_stat0 = cx25840_read(client, 0x804);
 830         u8 mod_det_stat1 = cx25840_read(client, 0x805);
 831         u8 audio_config = cx25840_read(client, 0x808);
 832         u8 pref_mode = cx25840_read(client, 0x809);
 833         u8 afc0 = cx25840_read(client, 0x80b);
 834         u8 mute_ctl = cx25840_read(client, 0x8d3);
 835         int aud_input = state->aud_input;
 836         char *p;
 837
 838         switch (mod_det_stat0) {
 839         case 0x00: p = "mono"; break;
 840         case 0x01: p = "stereo"; break;
 841         case 0x02: p = "dual"; break;
 842         case 0x04: p = "tri"; break;
 843         case 0x10: p = "mono with SAP"; break;
 844         case 0x11: p = "stereo with SAP"; break;
 845         case 0x12: p = "dual with SAP"; break;
 846         case 0x14: p = "tri with SAP"; break;
 847         case 0xfe: p = "forced mode"; break;
 848         default: p = "not defined";
 849         }
 850         v4l_info(client, "Detected audio mode:       %s\n", p);
 851
 852         switch (mod_det_stat1) {
 853         case 0x00: p = "not defined"; break;
 854         case 0x01: p = "EIAJ"; break;
 855         case 0x02: p = "A2-M"; break;
 856         case 0x03: p = "A2-BG"; break;
 857         case 0x04: p = "A2-DK1"; break;
 858         case 0x05: p = "A2-DK2"; break;
 859         case 0x06: p = "A2-DK3"; break;
 860         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
 861         case 0x08: p = "AM-L"; break;
 862         case 0x09: p = "NICAM-BG"; break;
 863         case 0x0a: p = "NICAM-DK"; break;
 864         case 0x0b: p = "NICAM-I"; break;
 865         case 0x0c: p = "NICAM-L"; break;
 866         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
 867         case 0x0e: p = "IF FM Radio"; break;
 868         case 0x0f: p = "BTSC"; break;
 869         case 0x10: p = "high-deviation FM"; break;
 870         case 0x11: p = "very high-deviation FM"; break;
 871         case 0xfd: p = "unknown audio standard"; break;
 872         case 0xfe: p = "forced audio standard"; break;
 873         case 0xff: p = "no detected audio standard"; break;
 874         default: p = "not defined";
 875         }
 876         v4l_info(client, "Detected audio standard:   %s\n", p);
 877         v4l_info(client, "Audio muted:               %s\n",
 878                     (state->unmute_volume >= 0) ? "yes" : "no");
 879         v4l_info(client, "Audio microcontroller:     %s\n",
 880                     (download_ctl & 0x10) ?
 881                                 ((mute_ctl & 0x2) ? "detecting" : "running") : "stopped");
 882
 883         switch (audio_config >> 4) {
 884         case 0x00: p = "undefined"; break;
 885         case 0x01: p = "BTSC"; break;
 886         case 0x02: p = "EIAJ"; break;
 887         case 0x03: p = "A2-M"; break;
 888         case 0x04: p = "A2-BG"; break;
 889         case 0x05: p = "A2-DK1"; break;
 890         case 0x06: p = "A2-DK2"; break;
 891         case 0x07: p = "A2-DK3"; break;
 892         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
 893         case 0x09: p = "AM-L"; break;
 894         case 0x0a: p = "NICAM-BG"; break;
 895         case 0x0b: p = "NICAM-DK"; break;
 896         case 0x0c: p = "NICAM-I"; break;
 897         case 0x0d: p = "NICAM-L"; break;
 898         case 0x0e: p = "FM radio"; break;
 899         case 0x0f: p = "automatic detection"; break;
 900         default: p = "undefined";
 901         }
 902         v4l_info(client, "Configured audio standard: %s\n", p);
 903
 904         if ((audio_config >> 4) < 0xF) {
 905                 switch (audio_config & 0xF) {
 906                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
 907                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
 908                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
 909                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
 910                 case 0x04: p = "STEREO"; break;
 911                 case 0x05: p = "DUAL1 (AB)"; break;
 912                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
 913                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
 914                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
 915                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
 916                 case 0x0a: p = "SAP"; break;
 917                 default: p = "undefined";
 918                 }
 919                 v4l_info(client, "Configured audio mode:     %s\n", p);
 920         } else {
 921                 switch (audio_config & 0xF) {
 922                 case 0x00: p = "BG"; break;
 923                 case 0x01: p = "DK1"; break;
 924                 case 0x02: p = "DK2"; break;
 925                 case 0x03: p = "DK3"; break;
 926                 case 0x04: p = "I"; break;
 927                 case 0x05: p = "L"; break;
 928                 case 0x06: p = "BTSC"; break;
 929                 case 0x07: p = "EIAJ"; break;
 930                 case 0x08: p = "A2-M"; break;
 931                 case 0x09: p = "FM Radio"; break;
 932                 case 0x0f: p = "automatic standard and mode detection"; break;
 933                 default: p = "undefined";
 934                 }
 935                 v4l_info(client, "Configured audio system:   %s\n", p);
 936         }
 937
 938         if (aud_input) {
 939                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
 940         } else {
 941                 v4l_info(client, "Specified audio input:     External\n");
 942         }
 943
 944         switch (pref_mode & 0xf) {
 945         case 0: p = "mono/language A"; break;
 946         case 1: p = "language B"; break;
 947         case 2: p = "language C"; break;
 948         case 3: p = "analog fallback"; break;
 949         case 4: p = "stereo"; break;
 950         case 5: p = "language AC"; break;
 951         case 6: p = "language BC"; break;
 952         case 7: p = "language AB"; break;
 953         default: p = "undefined";
 954         }
 955         v4l_info(client, "Preferred audio mode:      %s\n", p);
 956
 957         if ((audio_config & 0xf) == 0xf) {
 958                 switch ((afc0 >> 3) & 0x3) {
 959                 case 0: p = "system DK"; break;
 960                 case 1: p = "system L"; break;
 961                 case 2: p = "autodetect"; break;
 962                 default: p = "undefined";
 963                 }
 964                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
 965
 966                 switch (afc0 & 0x7) {
 967                 case 0: p = "chroma"; break;
 968                 case 1: p = "BTSC"; break;
 969                 case 2: p = "EIAJ"; break;
 970                 case 3: p = "A2-M"; break;
 971                 case 4: p = "autodetect"; break;
 972                 default: p = "undefined";
 973                 }
 974                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
 975         }
 976 }
 977
 978 /* ----------------------------------------------------------------------- */
 979
 980 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 981                            void *arg)
 982 {
 983         struct cx25840_state *state = i2c_get_clientdata(client);
 984         struct v4l2_tuner *vt = arg;
 985         struct v4l2_routing *route = arg;
 986
 987         /* ignore these commands */
 988         switch (cmd) {
 989                 case TUNER_SET_TYPE_ADDR:
 990                         return 0;
 991         }
 992
 993         if (!state->is_initialized) {
 994                 v4l_dbg(1, cx25840_debug, client, "cmd %08x triggered fw load\n", cmd);
 995                 /* initialize on first use */
 996                 state->is_initialized = 1;
 997                 if (state->is_cx25836)
 998                         cx25836_initialize(client);
 999                 else if (state->is_cx23885)
1000                         cx23885_initialize(client);
1001                 else
1002                         cx25840_initialize(client);
1003         }
1004
1005         switch (cmd) {
1006 #ifdef CONFIG_VIDEO_ADV_DEBUG
1007         /* ioctls to allow direct access to the
1008          * cx25840 registers for testing */
1009         case VIDIOC_DBG_G_REGISTER:
1010         case VIDIOC_DBG_S_REGISTER:
1011         {
1012                 struct v4l2_register *reg = arg;
1013
1014                 if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
1015                         return -EINVAL;
1016                 if (!capable(CAP_SYS_ADMIN))
1017                         return -EPERM;
1018
1019                 if (cmd == VIDIOC_DBG_G_REGISTER)
1020                         reg->val = cx25840_read(client, reg->reg & 0x0fff);
1021                 else
1022                         cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
1023                 break;
1024         }
1025 #endif
1026
1027         case VIDIOC_INT_DECODE_VBI_LINE:
1028                 return cx25840_vbi(client, cmd, arg);
1029
1030         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
1031                 return cx25840_audio(client, cmd, arg);
1032
1033         case VIDIOC_STREAMON:
1034                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
1035                 if (state->is_cx23885) {
1036                         u8 v = (cx25840_read(client, 0x421) | 0x0b);
1037                         cx25840_write(client, 0x421, v);
1038                 } else {
1039                         cx25840_write(client, 0x115,
1040                                 state->is_cx25836 ? 0x0c : 0x8c);
1041                         cx25840_write(client, 0x116,
1042                                 state->is_cx25836 ? 0x04 : 0x07);
1043                 }
1044                 break;
1045
1046         case VIDIOC_STREAMOFF:
1047                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
1048                 if (state->is_cx23885) {
1049                         u8 v = cx25840_read(client, 0x421) & ~(0x0b);
1050                         cx25840_write(client, 0x421, v);
1051                 } else {
1052                         cx25840_write(client, 0x115, 0x00);
1053                         cx25840_write(client, 0x116, 0x00);
1054                 }
1055                 break;
1056
1057         case VIDIOC_LOG_STATUS:
1058                 log_video_status(client);
1059                 if (!state->is_cx25836)
1060                         log_audio_status(client);
1061                 break;
1062
1063         case VIDIOC_G_CTRL:
1064                 return get_v4lctrl(client, (struct v4l2_control *)arg);
1065
1066         case VIDIOC_S_CTRL:
1067                 return set_v4lctrl(client, (struct v4l2_control *)arg);
1068
1069         case VIDIOC_QUERYCTRL:
1070         {
1071                 struct v4l2_queryctrl *qc = arg;
1072
1073                 switch (qc->id) {
1074                         case V4L2_CID_BRIGHTNESS:
1075                         case V4L2_CID_CONTRAST:
1076                         case V4L2_CID_SATURATION:
1077                         case V4L2_CID_HUE:
1078                                 return v4l2_ctrl_query_fill_std(qc);
1079                         default:
1080                                 break;
1081                 }
1082                 if (state->is_cx25836)
1083                         return -EINVAL;
1084
1085                 switch (qc->id) {
1086                         case V4L2_CID_AUDIO_VOLUME:
1087                         case V4L2_CID_AUDIO_MUTE:
1088                         case V4L2_CID_AUDIO_BALANCE:
1089                         case V4L2_CID_AUDIO_BASS:
1090                         case V4L2_CID_AUDIO_TREBLE:
1091                                 return v4l2_ctrl_query_fill_std(qc);
1092                         default:
1093                                 return -EINVAL;
1094                 }
1095                 return -EINVAL;
1096         }
1097
1098         case VIDIOC_G_STD:
1099                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
1100                 break;
1101
1102         case VIDIOC_S_STD:
1103                 state->radio = 0;
1104                 return set_v4lstd(client, *(v4l2_std_id *)arg);
1105
1106         case AUDC_SET_RADIO:
1107                 state->radio = 1;
1108                 break;
1109
1110         case VIDIOC_INT_G_VIDEO_ROUTING:
1111                 route->input = state->vid_input;
1112                 route->output = 0;
1113                 break;
1114
1115         case VIDIOC_INT_S_VIDEO_ROUTING:
1116                 return set_input(client, route->input, state->aud_input);
1117
1118         case VIDIOC_INT_G_AUDIO_ROUTING:
1119                 if (state->is_cx25836)
1120                         return -EINVAL;
1121                 route->input = state->aud_input;
1122                 route->output = 0;
1123                 break;
1124
1125         case VIDIOC_INT_S_AUDIO_ROUTING:
1126                 if (state->is_cx25836)
1127                         return -EINVAL;
1128                 return set_input(client, state->vid_input, route->input);
1129
1130         case VIDIOC_S_FREQUENCY:
1131                 if (!state->is_cx25836) {
1132                         input_change(client);
1133                 }
1134                 break;
1135
1136         case VIDIOC_G_TUNER:
1137         {
1138                 u8 vpres = cx25840_read(client, 0x40e) & 0x20;
1139                 u8 mode;
1140                 int val = 0;
1141
1142                 if (state->radio)
1143                         break;
1144
1145                 vt->signal = vpres ? 0xffff : 0x0;
1146                 if (state->is_cx25836)
1147                         break;
1148
1149                 vt->capability |=
1150                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
1151                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
1152
1153                 mode = cx25840_read(client, 0x804);
1154
1155                 /* get rxsubchans and audmode */
1156                 if ((mode & 0xf) == 1)
1157                         val |= V4L2_TUNER_SUB_STEREO;
1158                 else
1159                         val |= V4L2_TUNER_SUB_MONO;
1160
1161                 if (mode == 2 || mode == 4)
1162                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1163
1164                 if (mode & 0x10)
1165                         val |= V4L2_TUNER_SUB_SAP;
1166
1167                 vt->rxsubchans = val;
1168                 vt->audmode = state->audmode;
1169                 break;
1170         }
1171
1172         case VIDIOC_S_TUNER:
1173                 if (state->radio || state->is_cx25836)
1174                         break;
1175
1176                 switch (vt->audmode) {
1177                 case V4L2_TUNER_MODE_MONO:
1178                         /* mono      -> mono
1179                            stereo    -> mono
1180                            bilingual -> lang1 */
1181                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
1182                         break;
1183                 case V4L2_TUNER_MODE_STEREO:
1184                 case V4L2_TUNER_MODE_LANG1:
1185                         /* mono      -> mono
1186                            stereo    -> stereo
1187                            bilingual -> lang1 */
1188                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
1189                         break;
1190                 case V4L2_TUNER_MODE_LANG1_LANG2:
1191                         /* mono      -> mono
1192                            stereo    -> stereo
1193                            bilingual -> lang1/lang2 */
1194                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
1195                         break;
1196                 case V4L2_TUNER_MODE_LANG2:
1197                         /* mono      -> mono
1198                            stereo    -> stereo
1199                            bilingual -> lang2 */
1200                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
1201                         break;
1202                 default:
1203                         return -EINVAL;
1204                 }
1205                 state->audmode = vt->audmode;
1206                 break;
1207
1208         case VIDIOC_G_FMT:
1209                 return get_v4lfmt(client, (struct v4l2_format *)arg);
1210
1211         case VIDIOC_S_FMT:
1212                 return set_v4lfmt(client, (struct v4l2_format *)arg);
1213
1214         case VIDIOC_INT_RESET:
1215                 if (state->is_cx25836)
1216                         cx25836_initialize(client);
1217                 else if (state->is_cx23885)
1218                         cx23885_initialize(client);
1219                 else
1220                         cx25840_initialize(client);
1221                 break;
1222
1223         case VIDIOC_G_CHIP_IDENT:
1224                 return v4l2_chip_ident_i2c_client(client, arg, state->id, state->rev);
1225
1226         default:
1227                 return -EINVAL;
1228         }
1229
1230         return 0;
1231 }
1232
1233 /* ----------------------------------------------------------------------- */
1234
1235 static int cx25840_probe(struct i2c_client *client)
1236 {
1237         struct cx25840_state *state;
1238         u32 id;
1239         u16 device_id;
1240
1241         /* Check if the adapter supports the needed features */
1242         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1243                 return -EIO;
1244
1245         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", client->addr << 1);
1246
1247         device_id = cx25840_read(client, 0x101) << 8;
1248         device_id |= cx25840_read(client, 0x100);
1249         v4l_dbg(1, cx25840_debug, client, "device_id = 0x%04x\n", device_id);
1250
1251         /* The high byte of the device ID should be
1252          * 0x83 for the cx2583x and 0x84 for the cx2584x */
1253         if ((device_id & 0xff00) == 0x8300) {
1254                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1255         }
1256         else if ((device_id & 0xff00) == 0x8400) {
1257                 id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
1258         } else if (device_id == 0x0000) {
1259                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1260         } else if (device_id == 0x1313) {
1261                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1262         }
1263         else {
1264                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
1265                 return -ENODEV;
1266         }
1267
1268         state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
1269         if (state == NULL) {
1270                 return -ENOMEM;
1271         }
1272
1273         /* Note: revision '(device_id & 0x0f) == 2' was never built. The
1274            marking skips from 0x1 == 22 to 0x3 == 23. */
1275         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
1276                     (device_id & 0xfff0) >> 4,
1277                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : (device_id & 0x0f),
1278                     client->addr << 1, client->adapter->name);
1279
1280         i2c_set_clientdata(client, state);
1281         state->c = client;
1282         state->is_cx25836 = ((device_id & 0xff00) == 0x8300);
1283         state->is_cx23885 = (device_id == 0x0000) || (device_id == 0x1313);
1284         state->vid_input = CX25840_COMPOSITE7;
1285         state->aud_input = CX25840_AUDIO8;
1286         state->audclk_freq = 48000;
1287         state->pvr150_workaround = 0;
1288         state->audmode = V4L2_TUNER_MODE_LANG1;
1289         state->unmute_volume = -1;
1290         state->vbi_line_offset = 8;
1291         state->id = id;
1292         state->rev = device_id;
1293
1294         return 0;
1295 }
1296
1297 static int cx25840_remove(struct i2c_client *client)
1298 {
1299         kfree(i2c_get_clientdata(client));
1300         return 0;
1301 }
1302
1303 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
1304         .name = "cx25840",
1305         .driverid = I2C_DRIVERID_CX25840,
1306         .command = cx25840_command,
1307         .probe = cx25840_probe,
1308         .remove = cx25840_remove,
1309 };