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

   1 /* cx25840 - Conexant CX25840 audio/video decoder driver
   2  *
   3  * Copyright (C) 2004 Ulf Eklund
   4  *
   5  * Based on the saa7115 driver and on the first verison of Chris Kennedy's
   6  * cx25840 driver.
   7  *
   8  * Changes by Tyler Trafford <tatrafford@comcast.net>
   9  *    - cleanup/rewrite for V4L2 API (2005)
  10  *
  11  * VBI support by Hans Verkuil <hverkuil@xs4all.nl>.
  12  *
  13  * NTSC sliced VBI support by Christopher Neufeld <television@cneufeld.ca>
  14  * with additional fixes by Hans Verkuil <hverkuil@xs4all.nl>.
  15  *
  16  * 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 = state->std;
 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_LUMA8 ||
 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)
 527 {
 528         struct cx25840_state *state = i2c_get_clientdata(client);
 529         u8 fmt = 0;     /* zero is autodetect */
 530         u8 pal_m = 0;
 531
 532         /* First tests should be against specific std */
 533         if (state->std == V4L2_STD_NTSC_M_JP) {
 534                 fmt = 0x2;
 535         } else if (state->std == V4L2_STD_NTSC_443) {
 536                 fmt = 0x3;
 537         } else if (state->std == V4L2_STD_PAL_M) {
 538                 pal_m = 1;
 539                 fmt = 0x5;
 540         } else if (state->std == V4L2_STD_PAL_N) {
 541                 fmt = 0x6;
 542         } else if (state->std == V4L2_STD_PAL_Nc) {
 543                 fmt = 0x7;
 544         } else if (state->std == V4L2_STD_PAL_60) {
 545                 fmt = 0x8;
 546         } else {
 547                 /* Then, test against generic ones */
 548                 if (state->std & V4L2_STD_NTSC)
 549                         fmt = 0x1;
 550                 else if (state->std & V4L2_STD_PAL)
 551                         fmt = 0x4;
 552                 else if (state->std & V4L2_STD_SECAM)
 553                         fmt = 0xc;
 554         }
 555
 556         v4l_dbg(1, cx25840_debug, client, "changing video std to fmt %i\n",fmt);
 557
 558         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
 559            Without this PAL may display a vertical ghosting effect.
 560            This happens for example with the Yuan MPC622. */
 561         if (fmt >= 4 && fmt < 8) {
 562                 /* Set format to NTSC-M */
 563                 cx25840_and_or(client, 0x400, ~0xf, 1);
 564                 /* Turn off LCOMB */
 565                 cx25840_and_or(client, 0x47b, ~6, 0);
 566         }
 567         cx25840_and_or(client, 0x400, ~0xf, fmt);
 568         cx25840_and_or(client, 0x403, ~0x3, pal_m);
 569         cx25840_vbi_setup(client);
 570         if (!state->is_cx25836)
 571                 input_change(client);
 572         return 0;
 573 }
 574
 575 /* ----------------------------------------------------------------------- */
 576
 577 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 578 {
 579         struct cx25840_state *state = i2c_get_clientdata(client);
 580
 581         switch (ctrl->id) {
 582         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 583                 state->pvr150_workaround = ctrl->value;
 584                 set_input(client, state->vid_input, state->aud_input);
 585                 break;
 586
 587         case V4L2_CID_BRIGHTNESS:
 588                 if (ctrl->value < 0 || ctrl->value > 255) {
 589                         v4l_err(client, "invalid brightness setting %d\n",
 590                                     ctrl->value);
 591                         return -ERANGE;
 592                 }
 593
 594                 cx25840_write(client, 0x414, ctrl->value - 128);
 595                 break;
 596
 597         case V4L2_CID_CONTRAST:
 598                 if (ctrl->value < 0 || ctrl->value > 127) {
 599                         v4l_err(client, "invalid contrast setting %d\n",
 600                                     ctrl->value);
 601                         return -ERANGE;
 602                 }
 603
 604                 cx25840_write(client, 0x415, ctrl->value << 1);
 605                 break;
 606
 607         case V4L2_CID_SATURATION:
 608                 if (ctrl->value < 0 || ctrl->value > 127) {
 609                         v4l_err(client, "invalid saturation setting %d\n",
 610                                     ctrl->value);
 611                         return -ERANGE;
 612                 }
 613
 614                 cx25840_write(client, 0x420, ctrl->value << 1);
 615                 cx25840_write(client, 0x421, ctrl->value << 1);
 616                 break;
 617
 618         case V4L2_CID_HUE:
 619                 if (ctrl->value < -127 || ctrl->value > 127) {
 620                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
 621                         return -ERANGE;
 622                 }
 623
 624                 cx25840_write(client, 0x422, ctrl->value);
 625                 break;
 626
 627         case V4L2_CID_AUDIO_VOLUME:
 628         case V4L2_CID_AUDIO_BASS:
 629         case V4L2_CID_AUDIO_TREBLE:
 630         case V4L2_CID_AUDIO_BALANCE:
 631         case V4L2_CID_AUDIO_MUTE:
 632                 if (state->is_cx25836)
 633                         return -EINVAL;
 634                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 635
 636         default:
 637                 return -EINVAL;
 638         }
 639
 640         return 0;
 641 }
 642
 643 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 644 {
 645         struct cx25840_state *state = i2c_get_clientdata(client);
 646
 647         switch (ctrl->id) {
 648         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 649                 ctrl->value = state->pvr150_workaround;
 650                 break;
 651         case V4L2_CID_BRIGHTNESS:
 652                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
 653                 break;
 654         case V4L2_CID_CONTRAST:
 655                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 656                 break;
 657         case V4L2_CID_SATURATION:
 658                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 659                 break;
 660         case V4L2_CID_HUE:
 661                 ctrl->value = (s8)cx25840_read(client, 0x422);
 662                 break;
 663         case V4L2_CID_AUDIO_VOLUME:
 664         case V4L2_CID_AUDIO_BASS:
 665         case V4L2_CID_AUDIO_TREBLE:
 666         case V4L2_CID_AUDIO_BALANCE:
 667         case V4L2_CID_AUDIO_MUTE:
 668                 if (state->is_cx25836)
 669                         return -EINVAL;
 670                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 671         default:
 672                 return -EINVAL;
 673         }
 674
 675         return 0;
 676 }
 677
 678 /* ----------------------------------------------------------------------- */
 679
 680 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 681 {
 682         switch (fmt->type) {
 683         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 684                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 685         default:
 686                 return -EINVAL;
 687         }
 688
 689         return 0;
 690 }
 691
 692 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 693 {
 694         struct cx25840_state *state = i2c_get_clientdata(client);
 695         struct v4l2_pix_format *pix;
 696         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 697         int is_50Hz = !(state->std & V4L2_STD_525_60);
 698
 699         switch (fmt->type) {
 700         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 701                 pix = &(fmt->fmt.pix);
 702
 703                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 704                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 705
 706                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 707                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 708
 709                 Vlines = pix->height + (is_50Hz ? 4 : 7);
 710
 711                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 712                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 713                         v4l_err(client, "%dx%d is not a valid size!\n",
 714                                     pix->width, pix->height);
 715                         return -ERANGE;
 716                 }
 717
 718                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 719                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 720                 VSC &= 0x1fff;
 721
 722                 if (pix->width >= 385)
 723                         filter = 0;
 724                 else if (pix->width > 192)
 725                         filter = 1;
 726                 else if (pix->width > 96)
 727                         filter = 2;
 728                 else
 729                         filter = 3;
 730
 731                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
 732                             pix->width, pix->height, HSC, VSC);
 733
 734                 /* HSCALE=HSC */
 735                 cx25840_write(client, 0x418, HSC & 0xff);
 736                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 737                 cx25840_write(client, 0x41a, HSC >> 16);
 738                 /* VSCALE=VSC */
 739                 cx25840_write(client, 0x41c, VSC & 0xff);
 740                 cx25840_write(client, 0x41d, VSC >> 8);
 741                 /* VS_INTRLACE=1 VFILT=filter */
 742                 cx25840_write(client, 0x41e, 0x8 | filter);
 743                 break;
 744
 745         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 746                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 747
 748         case V4L2_BUF_TYPE_VBI_CAPTURE:
 749                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 750
 751         default:
 752                 return -EINVAL;
 753         }
 754
 755         return 0;
 756 }
 757
 758 /* ----------------------------------------------------------------------- */
 759
 760 static void log_video_status(struct i2c_client *client)
 761 {
 762         static const char *const fmt_strs[] = {
 763                 "0x0",
 764                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 765                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 766                 "0x9", "0xA", "0xB",
 767                 "SECAM",
 768                 "0xD", "0xE", "0xF"
 769         };
 770
 771         struct cx25840_state *state = i2c_get_clientdata(client);
 772         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
 773         u8 gen_stat1 = cx25840_read(client, 0x40d);
 774         u8 gen_stat2 = cx25840_read(client, 0x40e);
 775         int vid_input = state->vid_input;
 776
 777         v4l_info(client, "Video signal:              %spresent\n",
 778                     (gen_stat2 & 0x20) ? "" : "not ");
 779         v4l_info(client, "Detected format:           %s\n",
 780                     fmt_strs[gen_stat1 & 0xf]);
 781
 782         v4l_info(client, "Specified standard:        %s\n",
 783                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
 784
 785         if (vid_input >= CX25840_COMPOSITE1 &&
 786             vid_input <= CX25840_COMPOSITE8) {
 787                 v4l_info(client, "Specified video input:     Composite %d\n",
 788                         vid_input - CX25840_COMPOSITE1 + 1);
 789         } else {
 790                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
 791                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
 792         }
 793
 794         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
 795 }
 796
 797 /* ----------------------------------------------------------------------- */
 798
 799 static void log_audio_status(struct i2c_client *client)
 800 {
 801         struct cx25840_state *state = i2c_get_clientdata(client);
 802         u8 download_ctl = cx25840_read(client, 0x803);
 803         u8 mod_det_stat0 = cx25840_read(client, 0x804);
 804         u8 mod_det_stat1 = cx25840_read(client, 0x805);
 805         u8 audio_config = cx25840_read(client, 0x808);
 806         u8 pref_mode = cx25840_read(client, 0x809);
 807         u8 afc0 = cx25840_read(client, 0x80b);
 808         u8 mute_ctl = cx25840_read(client, 0x8d3);
 809         int aud_input = state->aud_input;
 810         char *p;
 811
 812         switch (mod_det_stat0) {
 813         case 0x00: p = "mono"; break;
 814         case 0x01: p = "stereo"; break;
 815         case 0x02: p = "dual"; break;
 816         case 0x04: p = "tri"; break;
 817         case 0x10: p = "mono with SAP"; break;
 818         case 0x11: p = "stereo with SAP"; break;
 819         case 0x12: p = "dual with SAP"; break;
 820         case 0x14: p = "tri with SAP"; break;
 821         case 0xfe: p = "forced mode"; break;
 822         default: p = "not defined";
 823         }
 824         v4l_info(client, "Detected audio mode:       %s\n", p);
 825
 826         switch (mod_det_stat1) {
 827         case 0x00: p = "not defined"; break;
 828         case 0x01: p = "EIAJ"; break;
 829         case 0x02: p = "A2-M"; break;
 830         case 0x03: p = "A2-BG"; break;
 831         case 0x04: p = "A2-DK1"; break;
 832         case 0x05: p = "A2-DK2"; break;
 833         case 0x06: p = "A2-DK3"; break;
 834         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
 835         case 0x08: p = "AM-L"; break;
 836         case 0x09: p = "NICAM-BG"; break;
 837         case 0x0a: p = "NICAM-DK"; break;
 838         case 0x0b: p = "NICAM-I"; break;
 839         case 0x0c: p = "NICAM-L"; break;
 840         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
 841         case 0x0e: p = "IF FM Radio"; break;
 842         case 0x0f: p = "BTSC"; break;
 843         case 0x10: p = "high-deviation FM"; break;
 844         case 0x11: p = "very high-deviation FM"; break;
 845         case 0xfd: p = "unknown audio standard"; break;
 846         case 0xfe: p = "forced audio standard"; break;
 847         case 0xff: p = "no detected audio standard"; break;
 848         default: p = "not defined";
 849         }
 850         v4l_info(client, "Detected audio standard:   %s\n", p);
 851         v4l_info(client, "Audio muted:               %s\n",
 852                     (state->unmute_volume >= 0) ? "yes" : "no");
 853         v4l_info(client, "Audio microcontroller:     %s\n",
 854                     (download_ctl & 0x10) ?
 855                                 ((mute_ctl & 0x2) ? "detecting" : "running") : "stopped");
 856
 857         switch (audio_config >> 4) {
 858         case 0x00: p = "undefined"; break;
 859         case 0x01: p = "BTSC"; break;
 860         case 0x02: p = "EIAJ"; break;
 861         case 0x03: p = "A2-M"; break;
 862         case 0x04: p = "A2-BG"; break;
 863         case 0x05: p = "A2-DK1"; break;
 864         case 0x06: p = "A2-DK2"; break;
 865         case 0x07: p = "A2-DK3"; break;
 866         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
 867         case 0x09: p = "AM-L"; break;
 868         case 0x0a: p = "NICAM-BG"; break;
 869         case 0x0b: p = "NICAM-DK"; break;
 870         case 0x0c: p = "NICAM-I"; break;
 871         case 0x0d: p = "NICAM-L"; break;
 872         case 0x0e: p = "FM radio"; break;
 873         case 0x0f: p = "automatic detection"; break;
 874         default: p = "undefined";
 875         }
 876         v4l_info(client, "Configured audio standard: %s\n", p);
 877
 878         if ((audio_config >> 4) < 0xF) {
 879                 switch (audio_config & 0xF) {
 880                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
 881                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
 882                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
 883                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
 884                 case 0x04: p = "STEREO"; break;
 885                 case 0x05: p = "DUAL1 (AB)"; break;
 886                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
 887                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
 888                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
 889                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
 890                 case 0x0a: p = "SAP"; break;
 891                 default: p = "undefined";
 892                 }
 893                 v4l_info(client, "Configured audio mode:     %s\n", p);
 894         } else {
 895                 switch (audio_config & 0xF) {
 896                 case 0x00: p = "BG"; break;
 897                 case 0x01: p = "DK1"; break;
 898                 case 0x02: p = "DK2"; break;
 899                 case 0x03: p = "DK3"; break;
 900                 case 0x04: p = "I"; break;
 901                 case 0x05: p = "L"; break;
 902                 case 0x06: p = "BTSC"; break;
 903                 case 0x07: p = "EIAJ"; break;
 904                 case 0x08: p = "A2-M"; break;
 905                 case 0x09: p = "FM Radio"; break;
 906                 case 0x0f: p = "automatic standard and mode detection"; break;
 907                 default: p = "undefined";
 908                 }
 909                 v4l_info(client, "Configured audio system:   %s\n", p);
 910         }
 911
 912         if (aud_input) {
 913                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
 914         } else {
 915                 v4l_info(client, "Specified audio input:     External\n");
 916         }
 917
 918         switch (pref_mode & 0xf) {
 919         case 0: p = "mono/language A"; break;
 920         case 1: p = "language B"; break;
 921         case 2: p = "language C"; break;
 922         case 3: p = "analog fallback"; break;
 923         case 4: p = "stereo"; break;
 924         case 5: p = "language AC"; break;
 925         case 6: p = "language BC"; break;
 926         case 7: p = "language AB"; break;
 927         default: p = "undefined";
 928         }
 929         v4l_info(client, "Preferred audio mode:      %s\n", p);
 930
 931         if ((audio_config & 0xf) == 0xf) {
 932                 switch ((afc0 >> 3) & 0x3) {
 933                 case 0: p = "system DK"; break;
 934                 case 1: p = "system L"; break;
 935                 case 2: p = "autodetect"; break;
 936                 default: p = "undefined";
 937                 }
 938                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
 939
 940                 switch (afc0 & 0x7) {
 941                 case 0: p = "chroma"; break;
 942                 case 1: p = "BTSC"; break;
 943                 case 2: p = "EIAJ"; break;
 944                 case 3: p = "A2-M"; break;
 945                 case 4: p = "autodetect"; break;
 946                 default: p = "undefined";
 947                 }
 948                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
 949         }
 950 }
 951
 952 /* ----------------------------------------------------------------------- */
 953
 954 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 955                            void *arg)
 956 {
 957         struct cx25840_state *state = i2c_get_clientdata(client);
 958         struct v4l2_tuner *vt = arg;
 959         struct v4l2_routing *route = arg;
 960
 961         /* ignore these commands */
 962         switch (cmd) {
 963                 case TUNER_SET_TYPE_ADDR:
 964                         return 0;
 965         }
 966
 967         if (!state->is_initialized) {
 968                 v4l_dbg(1, cx25840_debug, client, "cmd %08x triggered fw load\n", cmd);
 969                 /* initialize on first use */
 970                 state->is_initialized = 1;
 971                 if (state->is_cx25836)
 972                         cx25836_initialize(client);
 973                 else if (state->is_cx23885)
 974                         cx23885_initialize(client);
 975                 else
 976                         cx25840_initialize(client);
 977         }
 978
 979         switch (cmd) {
 980 #ifdef CONFIG_VIDEO_ADV_DEBUG
 981         /* ioctls to allow direct access to the
 982          * cx25840 registers for testing */
 983         case VIDIOC_DBG_G_REGISTER:
 984         case VIDIOC_DBG_S_REGISTER:
 985         {
 986                 struct v4l2_register *reg = arg;
 987
 988                 if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
 989                         return -EINVAL;
 990                 if (!capable(CAP_SYS_ADMIN))
 991                         return -EPERM;
 992
 993                 if (cmd == VIDIOC_DBG_G_REGISTER)
 994                         reg->val = cx25840_read(client, reg->reg & 0x0fff);
 995                 else
 996                         cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 997                 break;
 998         }
 999 #endif
1000
1001         case VIDIOC_INT_DECODE_VBI_LINE:
1002                 return cx25840_vbi(client, cmd, arg);
1003
1004         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
1005                 return cx25840_audio(client, cmd, arg);
1006
1007         case VIDIOC_STREAMON:
1008                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
1009                 if (state->is_cx23885) {
1010                         u8 v = (cx25840_read(client, 0x421) | 0x0b);
1011                         cx25840_write(client, 0x421, v);
1012                 } else {
1013                         cx25840_write(client, 0x115,
1014                                 state->is_cx25836 ? 0x0c : 0x8c);
1015                         cx25840_write(client, 0x116,
1016                                 state->is_cx25836 ? 0x04 : 0x07);
1017                 }
1018                 break;
1019
1020         case VIDIOC_STREAMOFF:
1021                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
1022                 if (state->is_cx23885) {
1023                         u8 v = cx25840_read(client, 0x421) & ~(0x0b);
1024                         cx25840_write(client, 0x421, v);
1025                 } else {
1026                         cx25840_write(client, 0x115, 0x00);
1027                         cx25840_write(client, 0x116, 0x00);
1028                 }
1029                 break;
1030
1031         case VIDIOC_LOG_STATUS:
1032                 log_video_status(client);
1033                 if (!state->is_cx25836)
1034                         log_audio_status(client);
1035                 break;
1036
1037         case VIDIOC_G_CTRL:
1038                 return get_v4lctrl(client, (struct v4l2_control *)arg);
1039
1040         case VIDIOC_S_CTRL:
1041                 return set_v4lctrl(client, (struct v4l2_control *)arg);
1042
1043         case VIDIOC_QUERYCTRL:
1044         {
1045                 struct v4l2_queryctrl *qc = arg;
1046
1047                 switch (qc->id) {
1048                         case V4L2_CID_BRIGHTNESS:
1049                         case V4L2_CID_CONTRAST:
1050                         case V4L2_CID_SATURATION:
1051                         case V4L2_CID_HUE:
1052                                 return v4l2_ctrl_query_fill_std(qc);
1053                         default:
1054                                 break;
1055                 }
1056                 if (state->is_cx25836)
1057                         return -EINVAL;
1058
1059                 switch (qc->id) {
1060                         case V4L2_CID_AUDIO_VOLUME:
1061                         case V4L2_CID_AUDIO_MUTE:
1062                         case V4L2_CID_AUDIO_BALANCE:
1063                         case V4L2_CID_AUDIO_BASS:
1064                         case V4L2_CID_AUDIO_TREBLE:
1065                                 return v4l2_ctrl_query_fill_std(qc);
1066                         default:
1067                                 return -EINVAL;
1068                 }
1069                 return -EINVAL;
1070         }
1071
1072         case VIDIOC_G_STD:
1073                 *(v4l2_std_id *)arg = state->std;
1074                 break;
1075
1076         case VIDIOC_S_STD:
1077                 if (state->radio == 0 && state->std == *(v4l2_std_id *)arg)
1078                         return 0;
1079                 state->radio = 0;
1080                 state->std = *(v4l2_std_id *)arg;
1081                 return set_v4lstd(client);
1082
1083         case AUDC_SET_RADIO:
1084                 state->radio = 1;
1085                 break;
1086
1087         case VIDIOC_INT_G_VIDEO_ROUTING:
1088                 route->input = state->vid_input;
1089                 route->output = 0;
1090                 break;
1091
1092         case VIDIOC_INT_S_VIDEO_ROUTING:
1093                 return set_input(client, route->input, state->aud_input);
1094
1095         case VIDIOC_INT_G_AUDIO_ROUTING:
1096                 if (state->is_cx25836)
1097                         return -EINVAL;
1098                 route->input = state->aud_input;
1099                 route->output = 0;
1100                 break;
1101
1102         case VIDIOC_INT_S_AUDIO_ROUTING:
1103                 if (state->is_cx25836)
1104                         return -EINVAL;
1105                 return set_input(client, state->vid_input, route->input);
1106
1107         case VIDIOC_S_FREQUENCY:
1108                 if (!state->is_cx25836) {
1109                         input_change(client);
1110                 }
1111                 break;
1112
1113         case VIDIOC_G_TUNER:
1114         {
1115                 u8 vpres = cx25840_read(client, 0x40e) & 0x20;
1116                 u8 mode;
1117                 int val = 0;
1118
1119                 if (state->radio)
1120                         break;
1121
1122                 vt->signal = vpres ? 0xffff : 0x0;
1123                 if (state->is_cx25836)
1124                         break;
1125
1126                 vt->capability |=
1127                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
1128                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
1129
1130                 mode = cx25840_read(client, 0x804);
1131
1132                 /* get rxsubchans and audmode */
1133                 if ((mode & 0xf) == 1)
1134                         val |= V4L2_TUNER_SUB_STEREO;
1135                 else
1136                         val |= V4L2_TUNER_SUB_MONO;
1137
1138                 if (mode == 2 || mode == 4)
1139                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1140
1141                 if (mode & 0x10)
1142                         val |= V4L2_TUNER_SUB_SAP;
1143
1144                 vt->rxsubchans = val;
1145                 vt->audmode = state->audmode;
1146                 break;
1147         }
1148
1149         case VIDIOC_S_TUNER:
1150                 if (state->radio || state->is_cx25836)
1151                         break;
1152
1153                 switch (vt->audmode) {
1154                 case V4L2_TUNER_MODE_MONO:
1155                         /* mono      -> mono
1156                            stereo    -> mono
1157                            bilingual -> lang1 */
1158                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
1159                         break;
1160                 case V4L2_TUNER_MODE_STEREO:
1161                 case V4L2_TUNER_MODE_LANG1:
1162                         /* mono      -> mono
1163                            stereo    -> stereo
1164                            bilingual -> lang1 */
1165                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
1166                         break;
1167                 case V4L2_TUNER_MODE_LANG1_LANG2:
1168                         /* mono      -> mono
1169                            stereo    -> stereo
1170                            bilingual -> lang1/lang2 */
1171                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
1172                         break;
1173                 case V4L2_TUNER_MODE_LANG2:
1174                         /* mono      -> mono
1175                            stereo    -> stereo
1176                            bilingual -> lang2 */
1177                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
1178                         break;
1179                 default:
1180                         return -EINVAL;
1181                 }
1182                 state->audmode = vt->audmode;
1183                 break;
1184
1185         case VIDIOC_G_FMT:
1186                 return get_v4lfmt(client, (struct v4l2_format *)arg);
1187
1188         case VIDIOC_S_FMT:
1189                 return set_v4lfmt(client, (struct v4l2_format *)arg);
1190
1191         case VIDIOC_INT_RESET:
1192                 if (state->is_cx25836)
1193                         cx25836_initialize(client);
1194                 else if (state->is_cx23885)
1195                         cx23885_initialize(client);
1196                 else
1197                         cx25840_initialize(client);
1198                 break;
1199
1200         case VIDIOC_G_CHIP_IDENT:
1201                 return v4l2_chip_ident_i2c_client(client, arg, state->id, state->rev);
1202
1203         default:
1204                 return -EINVAL;
1205         }
1206
1207         return 0;
1208 }
1209
1210 /* ----------------------------------------------------------------------- */
1211
1212 static int cx25840_probe(struct i2c_client *client,
1213                          const struct i2c_device_id *did)
1214 {
1215         struct cx25840_state *state;
1216         u32 id;
1217         u16 device_id;
1218
1219         /* Check if the adapter supports the needed features */
1220         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1221                 return -EIO;
1222
1223         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", client->addr << 1);
1224
1225         device_id = cx25840_read(client, 0x101) << 8;
1226         device_id |= cx25840_read(client, 0x100);
1227         v4l_dbg(1, cx25840_debug, client, "device_id = 0x%04x\n", device_id);
1228
1229         /* The high byte of the device ID should be
1230          * 0x83 for the cx2583x and 0x84 for the cx2584x */
1231         if ((device_id & 0xff00) == 0x8300) {
1232                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1233         }
1234         else if ((device_id & 0xff00) == 0x8400) {
1235                 id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
1236         } else if (device_id == 0x0000) {
1237                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1238         } else if (device_id == 0x1313) {
1239                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1240         }
1241         else {
1242                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
1243                 return -ENODEV;
1244         }
1245
1246         state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
1247         if (state == NULL) {
1248                 return -ENOMEM;
1249         }
1250
1251         /* Note: revision '(device_id & 0x0f) == 2' was never built. The
1252            marking skips from 0x1 == 22 to 0x3 == 23. */
1253         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
1254                     (device_id & 0xfff0) >> 4,
1255                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : (device_id & 0x0f),
1256                     client->addr << 1, client->adapter->name);
1257
1258         i2c_set_clientdata(client, state);
1259         state->c = client;
1260         state->is_cx25836 = ((device_id & 0xff00) == 0x8300);
1261         state->is_cx23885 = (device_id == 0x0000) || (device_id == 0x1313);
1262         state->vid_input = CX25840_COMPOSITE7;
1263         state->aud_input = CX25840_AUDIO8;
1264         state->audclk_freq = 48000;
1265         state->pvr150_workaround = 0;
1266         state->audmode = V4L2_TUNER_MODE_LANG1;
1267         state->unmute_volume = -1;
1268         state->vbi_line_offset = 8;
1269         state->id = id;
1270         state->rev = device_id;
1271
1272         if (state->is_cx23885) {
1273                 /* Drive GPIO2 direction and values */
1274                 cx25840_write(client, 0x160, 0x1d);
1275                 cx25840_write(client, 0x164, 0x00);
1276         }
1277
1278         return 0;
1279 }
1280
1281 static int cx25840_remove(struct i2c_client *client)
1282 {
1283         kfree(i2c_get_clientdata(client));
1284         return 0;
1285 }
1286
1287 static const struct i2c_device_id cx25840_id[] = {
1288         { "cx25840", 0 },
1289         { }
1290 };
1291 MODULE_DEVICE_TABLE(i2c, cx25840_id);
1292
1293 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
1294         .name = "cx25840",
1295         .driverid = I2C_DRIVERID_CX25840,
1296         .command = cx25840_command,
1297         .probe = cx25840_probe,
1298         .remove = cx25840_remove,
1299         .id_table = cx25840_id,
1300 };