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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 int cx25840_debug;
  54
  55 module_param_named(debug,cx25840_debug, int, 0644);
  56
  57 MODULE_PARM_DESC(debug, "Debugging messages [0=Off (default) 1=On]");
  58
  59 I2C_CLIENT_INSMOD;
  60
  61 /* ----------------------------------------------------------------------- */
  62
  63 int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
  64 {
  65         u8 buffer[3];
  66         buffer[0] = addr >> 8;
  67         buffer[1] = addr & 0xff;
  68         buffer[2] = value;
  69         return i2c_master_send(client, buffer, 3);
  70 }
  71
  72 int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
  73 {
  74         u8 buffer[6];
  75         buffer[0] = addr >> 8;
  76         buffer[1] = addr & 0xff;
  77         buffer[2] = value & 0xff;
  78         buffer[3] = (value >> 8) & 0xff;
  79         buffer[4] = (value >> 16) & 0xff;
  80         buffer[5] = value >> 24;
  81         return i2c_master_send(client, buffer, 6);
  82 }
  83
  84 u8 cx25840_read(struct i2c_client * client, u16 addr)
  85 {
  86         u8 buffer[2];
  87         buffer[0] = addr >> 8;
  88         buffer[1] = addr & 0xff;
  89
  90         if (i2c_master_send(client, buffer, 2) < 2)
  91                 return 0;
  92
  93         if (i2c_master_recv(client, buffer, 1) < 1)
  94                 return 0;
  95
  96         return buffer[0];
  97 }
  98
  99 u32 cx25840_read4(struct i2c_client * client, u16 addr)
 100 {
 101         u8 buffer[4];
 102         buffer[0] = addr >> 8;
 103         buffer[1] = addr & 0xff;
 104
 105         if (i2c_master_send(client, buffer, 2) < 2)
 106                 return 0;
 107
 108         if (i2c_master_recv(client, buffer, 4) < 4)
 109                 return 0;
 110
 111         return (buffer[3] << 24) | (buffer[2] << 16) |
 112             (buffer[1] << 8) | buffer[0];
 113 }
 114
 115 int cx25840_and_or(struct i2c_client *client, u16 addr, unsigned and_mask,
 116                    u8 or_value)
 117 {
 118         return cx25840_write(client, addr,
 119                              (cx25840_read(client, addr) & and_mask) |
 120                              or_value);
 121 }
 122
 123 /* ----------------------------------------------------------------------- */
 124
 125 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 126                                                 enum cx25840_audio_input aud_input);
 127
 128 /* ----------------------------------------------------------------------- */
 129
 130 static void init_dll1(struct i2c_client *client)
 131 {
 132         /* This is the Hauppauge sequence used to
 133          * initialize the Delay Lock Loop 1 (ADC DLL). */
 134         cx25840_write(client, 0x159, 0x23);
 135         cx25840_write(client, 0x15a, 0x87);
 136         cx25840_write(client, 0x15b, 0x06);
 137         udelay(10);
 138         cx25840_write(client, 0x159, 0xe1);
 139         udelay(10);
 140         cx25840_write(client, 0x15a, 0x86);
 141         cx25840_write(client, 0x159, 0xe0);
 142         cx25840_write(client, 0x159, 0xe1);
 143         cx25840_write(client, 0x15b, 0x10);
 144 }
 145
 146 static void init_dll2(struct i2c_client *client)
 147 {
 148         /* This is the Hauppauge sequence used to
 149          * initialize the Delay Lock Loop 2 (ADC DLL). */
 150         cx25840_write(client, 0x15d, 0xe3);
 151         cx25840_write(client, 0x15e, 0x86);
 152         cx25840_write(client, 0x15f, 0x06);
 153         udelay(10);
 154         cx25840_write(client, 0x15d, 0xe1);
 155         cx25840_write(client, 0x15d, 0xe0);
 156         cx25840_write(client, 0x15d, 0xe1);
 157 }
 158
 159 static void cx25836_initialize(struct i2c_client *client)
 160 {
 161         /* reset configuration is described on page 3-77 of the CX25836 datasheet */
 162         /* 2. */
 163         cx25840_and_or(client, 0x000, ~0x01, 0x01);
 164         cx25840_and_or(client, 0x000, ~0x01, 0x00);
 165         /* 3a. */
 166         cx25840_and_or(client, 0x15a, ~0x70, 0x00);
 167         /* 3b. */
 168         cx25840_and_or(client, 0x15b, ~0x1e, 0x06);
 169         /* 3c. */
 170         cx25840_and_or(client, 0x159, ~0x02, 0x02);
 171         /* 3d. */
 172         udelay(10);
 173         /* 3e. */
 174         cx25840_and_or(client, 0x159, ~0x02, 0x00);
 175         /* 3f. */
 176         cx25840_and_or(client, 0x159, ~0xc0, 0xc0);
 177         /* 3g. */
 178         cx25840_and_or(client, 0x159, ~0x01, 0x00);
 179         cx25840_and_or(client, 0x159, ~0x01, 0x01);
 180         /* 3h. */
 181         cx25840_and_or(client, 0x15b, ~0x1e, 0x10);
 182 }
 183
 184 static void cx25840_work_handler(struct work_struct *work)
 185 {
 186         struct cx25840_state *state = container_of(work, struct cx25840_state, fw_work);
 187         cx25840_loadfw(state->c);
 188         wake_up(&state->fw_wait);
 189 }
 190
 191 static void cx25840_initialize(struct i2c_client *client)
 192 {
 193         DEFINE_WAIT(wait);
 194         struct cx25840_state *state = i2c_get_clientdata(client);
 195         struct workqueue_struct *q;
 196
 197         /* datasheet startup in numbered steps, refer to page 3-77 */
 198         /* 2. */
 199         cx25840_and_or(client, 0x803, ~0x10, 0x00);
 200         /* The default of this register should be 4, but I get 0 instead.
 201          * Set this register to 4 manually. */
 202         cx25840_write(client, 0x000, 0x04);
 203         /* 3. */
 204         init_dll1(client);
 205         init_dll2(client);
 206         cx25840_write(client, 0x136, 0x0a);
 207         /* 4. */
 208         cx25840_write(client, 0x13c, 0x01);
 209         cx25840_write(client, 0x13c, 0x00);
 210         /* 5. */
 211         /* Do the firmware load in a work handler to prevent.
 212            Otherwise the kernel is blocked waiting for the
 213            bit-banging i2c interface to finish uploading the
 214            firmware. */
 215         INIT_WORK(&state->fw_work, cx25840_work_handler);
 216         init_waitqueue_head(&state->fw_wait);
 217         q = create_singlethread_workqueue("cx25840_fw");
 218         prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
 219         queue_work(q, &state->fw_work);
 220         schedule();
 221         finish_wait(&state->fw_wait, &wait);
 222         destroy_workqueue(q);
 223
 224         /* 6. */
 225         cx25840_write(client, 0x115, 0x8c);
 226         cx25840_write(client, 0x116, 0x07);
 227         cx25840_write(client, 0x118, 0x02);
 228         /* 7. */
 229         cx25840_write(client, 0x4a5, 0x80);
 230         cx25840_write(client, 0x4a5, 0x00);
 231         cx25840_write(client, 0x402, 0x00);
 232         /* 8. */
 233         cx25840_and_or(client, 0x401, ~0x18, 0);
 234         cx25840_and_or(client, 0x4a2, ~0x10, 0x10);
 235         /* steps 8c and 8d are done in change_input() */
 236         /* 10. */
 237         cx25840_write(client, 0x8d3, 0x1f);
 238         cx25840_write(client, 0x8e3, 0x03);
 239
 240         cx25840_vbi_setup(client);
 241
 242         /* trial and error says these are needed to get audio */
 243         cx25840_write(client, 0x914, 0xa0);
 244         cx25840_write(client, 0x918, 0xa0);
 245         cx25840_write(client, 0x919, 0x01);
 246
 247         /* stereo prefered */
 248         cx25840_write(client, 0x809, 0x04);
 249         /* AC97 shift */
 250         cx25840_write(client, 0x8cf, 0x0f);
 251
 252         /* (re)set input */
 253         set_input(client, state->vid_input, state->aud_input);
 254
 255         /* start microcontroller */
 256         cx25840_and_or(client, 0x803, ~0x10, 0x10);
 257 }
 258
 259 static void cx23885_initialize(struct i2c_client *client)
 260 {
 261         DEFINE_WAIT(wait);
 262         struct cx25840_state *state = i2c_get_clientdata(client);
 263         struct workqueue_struct *q;
 264
 265         /* Internal Reset */
 266         cx25840_and_or(client, 0x102, ~0x01, 0x01);
 267         cx25840_and_or(client, 0x102, ~0x01, 0x00);
 268
 269         /* Stop microcontroller */
 270         cx25840_and_or(client, 0x803, ~0x10, 0x00);
 271
 272         /* DIF in reset? */
 273         cx25840_write(client, 0x398, 0);
 274
 275         /* Trust the default xtal, no division */
 276         /* This changes for the cx23888 products */
 277         cx25840_write(client, 0x2, 0x76);
 278
 279         /* Bring down the regulator for AUX clk */
 280         cx25840_write(client, 0x1, 0x40);
 281
 282         /* Sys PLL frac */
 283         cx25840_write4(client, 0x11c, 0x01d1744c);
 284
 285         /* Sys PLL int */
 286         cx25840_write4(client, 0x118, 0x00000416);
 287
 288         /* Disable DIF bypass */
 289         cx25840_write4(client, 0x33c, 0x00000001);
 290
 291         /* DIF Src phase inc */
 292         cx25840_write4(client, 0x340, 0x0df7df83);
 293
 294         /* Vid PLL frac */
 295         cx25840_write4(client, 0x10c, 0x01b6db7b);
 296
 297         /* Vid PLL int */
 298         cx25840_write4(client, 0x108, 0x00000512);
 299
 300         /* Luma */
 301         cx25840_write4(client, 0x414, 0x00107d12);
 302
 303         /* Chroma */
 304         cx25840_write4(client, 0x420, 0x3d008282);
 305
 306         /* Aux PLL frac */
 307         cx25840_write4(client, 0x114, 0x017dbf48);
 308
 309         /* Aux PLL int */
 310         cx25840_write4(client, 0x110, 0x000a030e);
 311
 312         /* ADC2 input select */
 313         cx25840_write(client, 0x102, 0x10);
 314
 315         /* VIN1 & VIN5 */
 316         cx25840_write(client, 0x103, 0x11);
 317
 318         /* Enable format auto detect */
 319         cx25840_write(client, 0x400, 0);
 320         /* Fast subchroma lock */
 321         /* White crush, Chroma AGC & Chroma Killer enabled */
 322         cx25840_write(client, 0x401, 0xe8);
 323
 324         /* Select AFE clock pad output source */
 325         cx25840_write(client, 0x144, 0x05);
 326
 327         /* Do the firmware load in a work handler to prevent.
 328            Otherwise the kernel is blocked waiting for the
 329            bit-banging i2c interface to finish uploading the
 330            firmware. */
 331         INIT_WORK(&state->fw_work, cx25840_work_handler);
 332         init_waitqueue_head(&state->fw_wait);
 333         q = create_singlethread_workqueue("cx25840_fw");
 334         prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
 335         queue_work(q, &state->fw_work);
 336         schedule();
 337         finish_wait(&state->fw_wait, &wait);
 338         destroy_workqueue(q);
 339
 340         cx25840_vbi_setup(client);
 341
 342         /* (re)set input */
 343         set_input(client, state->vid_input, state->aud_input);
 344
 345         /* start microcontroller */
 346         cx25840_and_or(client, 0x803, ~0x10, 0x10);
 347 }
 348
 349 /* ----------------------------------------------------------------------- */
 350
 351 static void input_change(struct i2c_client *client)
 352 {
 353         struct cx25840_state *state = i2c_get_clientdata(client);
 354         v4l2_std_id std = state->std;
 355
 356         /* Follow step 8c and 8d of section 3.16 in the cx25840 datasheet */
 357         if (std & V4L2_STD_SECAM) {
 358                 cx25840_write(client, 0x402, 0);
 359         }
 360         else {
 361                 cx25840_write(client, 0x402, 0x04);
 362                 cx25840_write(client, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
 363         }
 364         cx25840_and_or(client, 0x401, ~0x60, 0);
 365         cx25840_and_or(client, 0x401, ~0x60, 0x60);
 366         cx25840_and_or(client, 0x810, ~0x01, 1);
 367
 368         if (state->radio) {
 369                 cx25840_write(client, 0x808, 0xf9);
 370                 cx25840_write(client, 0x80b, 0x00);
 371         }
 372         else if (std & V4L2_STD_525_60) {
 373                 /* Certain Hauppauge PVR150 models have a hardware bug
 374                    that causes audio to drop out. For these models the
 375                    audio standard must be set explicitly.
 376                    To be precise: it affects cards with tuner models
 377                    85, 99 and 112 (model numbers from tveeprom). */
 378                 int hw_fix = state->pvr150_workaround;
 379
 380                 if (std == V4L2_STD_NTSC_M_JP) {
 381                         /* Japan uses EIAJ audio standard */
 382                         cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
 383                 } else if (std == V4L2_STD_NTSC_M_KR) {
 384                         /* South Korea uses A2 audio standard */
 385                         cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
 386                 } else {
 387                         /* Others use the BTSC audio standard */
 388                         cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
 389                 }
 390                 cx25840_write(client, 0x80b, 0x00);
 391         } else if (std & V4L2_STD_PAL) {
 392                 /* Follow tuner change procedure for PAL */
 393                 cx25840_write(client, 0x808, 0xff);
 394                 cx25840_write(client, 0x80b, 0x10);
 395         } else if (std & V4L2_STD_SECAM) {
 396                 /* Select autodetect for SECAM */
 397                 cx25840_write(client, 0x808, 0xff);
 398                 cx25840_write(client, 0x80b, 0x10);
 399         }
 400
 401         cx25840_and_or(client, 0x810, ~0x01, 0);
 402 }
 403
 404 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 405                                                 enum cx25840_audio_input aud_input)
 406 {
 407         struct cx25840_state *state = i2c_get_clientdata(client);
 408         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
 409                            vid_input <= CX25840_COMPOSITE8);
 410         u8 reg;
 411
 412         v4l_dbg(1, cx25840_debug, client,
 413                 "decoder set video input %d, audio input %d\n",
 414                 vid_input, aud_input);
 415
 416         if (vid_input >= CX25840_VIN1_CH1) {
 417                 v4l_dbg(1, cx25840_debug, client, "vid_input 0x%x\n",
 418                         vid_input);
 419                 reg = vid_input & 0xff;
 420                 if ((vid_input & CX25840_SVIDEO_ON) == CX25840_SVIDEO_ON)
 421                         is_composite = 0;
 422                 else
 423                         is_composite = 1;
 424
 425                 v4l_dbg(1, cx25840_debug, client, "mux cfg 0x%x comp=%d\n",
 426                         reg, is_composite);
 427         } else
 428         if (is_composite) {
 429                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
 430         } else {
 431                 int luma = vid_input & 0xf0;
 432                 int chroma = vid_input & 0xf00;
 433
 434                 if ((vid_input & ~0xff0) ||
 435                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA8 ||
 436                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
 437                         v4l_err(client, "0x%04x is not a valid video input!\n",
 438                                 vid_input);
 439                         return -EINVAL;
 440                 }
 441                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
 442                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
 443                         reg &= 0x3f;
 444                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
 445                 } else {
 446                         reg &= 0xcf;
 447                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
 448                 }
 449         }
 450
 451         /* The caller has previously prepared the correct routing
 452          * configuration in reg (for the cx23885) so we have no
 453          * need to attempt to flip bits for earlier av decoders.
 454          */
 455         if (!state->is_cx23885) {
 456                 switch (aud_input) {
 457                 case CX25840_AUDIO_SERIAL:
 458                         /* do nothing, use serial audio input */
 459                         break;
 460                 case CX25840_AUDIO4: reg &= ~0x30; break;
 461                 case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
 462                 case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
 463                 case CX25840_AUDIO7: reg &= ~0xc0; break;
 464                 case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
 465
 466                 default:
 467                         v4l_err(client, "0x%04x is not a valid audio input!\n",
 468                                 aud_input);
 469                         return -EINVAL;
 470                 }
 471         }
 472
 473         cx25840_write(client, 0x103, reg);
 474
 475         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
 476         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
 477
 478         if (!state->is_cx23885) {
 479                 /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
 480                 cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
 481                 /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2&CH3 */
 482                 if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
 483                         cx25840_and_or(client, 0x102, ~0x4, 4);
 484                 else
 485                         cx25840_and_or(client, 0x102, ~0x4, 0);
 486         } else {
 487                 if (is_composite)
 488                         /* ADC2 input select channel 2 */
 489                         cx25840_and_or(client, 0x102, ~0x2, 0);
 490                 else
 491                         /* ADC2 input select channel 3 */
 492                         cx25840_and_or(client, 0x102, ~0x2, 2);
 493         }
 494
 495         state->vid_input = vid_input;
 496         state->aud_input = aud_input;
 497         if (!state->is_cx25836) {
 498                 cx25840_audio_set_path(client);
 499                 input_change(client);
 500         }
 501
 502         if (state->is_cx23885) {
 503                 /* Audio channel 1 src : Parallel 1 */
 504                 cx25840_write(client, 0x124, 0x03);
 505
 506                 /* Select AFE clock pad output source */
 507                 cx25840_write(client, 0x144, 0x05);
 508
 509                 /* I2S_IN_CTL: I2S_IN_SONY_MODE, LEFT SAMPLE on WS=1 */
 510                 cx25840_write(client, 0x914, 0xa0);
 511
 512                 /* I2S_OUT_CTL:
 513                  * I2S_IN_SONY_MODE, LEFT SAMPLE on WS=1
 514                  * I2S_OUT_MASTER_MODE = Master
 515                  */
 516                 cx25840_write(client, 0x918, 0xa0);
 517                 cx25840_write(client, 0x919, 0x01);
 518         }
 519
 520         return 0;
 521 }
 522
 523 /* ----------------------------------------------------------------------- */
 524
 525 static int set_v4lstd(struct i2c_client *client)
 526 {
 527         struct cx25840_state *state = i2c_get_clientdata(client);
 528         u8 fmt = 0;     /* zero is autodetect */
 529         u8 pal_m = 0;
 530
 531         /* First tests should be against specific std */
 532         if (state->std == V4L2_STD_NTSC_M_JP) {
 533                 fmt = 0x2;
 534         } else if (state->std == V4L2_STD_NTSC_443) {
 535                 fmt = 0x3;
 536         } else if (state->std == V4L2_STD_PAL_M) {
 537                 pal_m = 1;
 538                 fmt = 0x5;
 539         } else if (state->std == V4L2_STD_PAL_N) {
 540                 fmt = 0x6;
 541         } else if (state->std == V4L2_STD_PAL_Nc) {
 542                 fmt = 0x7;
 543         } else if (state->std == V4L2_STD_PAL_60) {
 544                 fmt = 0x8;
 545         } else {
 546                 /* Then, test against generic ones */
 547                 if (state->std & V4L2_STD_NTSC)
 548                         fmt = 0x1;
 549                 else if (state->std & V4L2_STD_PAL)
 550                         fmt = 0x4;
 551                 else if (state->std & V4L2_STD_SECAM)
 552                         fmt = 0xc;
 553         }
 554
 555         v4l_dbg(1, cx25840_debug, client, "changing video std to fmt %i\n",fmt);
 556
 557         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
 558            Without this PAL may display a vertical ghosting effect.
 559            This happens for example with the Yuan MPC622. */
 560         if (fmt >= 4 && fmt < 8) {
 561                 /* Set format to NTSC-M */
 562                 cx25840_and_or(client, 0x400, ~0xf, 1);
 563                 /* Turn off LCOMB */
 564                 cx25840_and_or(client, 0x47b, ~6, 0);
 565         }
 566         cx25840_and_or(client, 0x400, ~0xf, fmt);
 567         cx25840_and_or(client, 0x403, ~0x3, pal_m);
 568         cx25840_vbi_setup(client);
 569         if (!state->is_cx25836)
 570                 input_change(client);
 571         return 0;
 572 }
 573
 574 /* ----------------------------------------------------------------------- */
 575
 576 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 577 {
 578         struct cx25840_state *state = i2c_get_clientdata(client);
 579
 580         switch (ctrl->id) {
 581         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 582                 state->pvr150_workaround = ctrl->value;
 583                 set_input(client, state->vid_input, state->aud_input);
 584                 break;
 585
 586         case V4L2_CID_BRIGHTNESS:
 587                 if (ctrl->value < 0 || ctrl->value > 255) {
 588                         v4l_err(client, "invalid brightness setting %d\n",
 589                                     ctrl->value);
 590                         return -ERANGE;
 591                 }
 592
 593                 cx25840_write(client, 0x414, ctrl->value - 128);
 594                 break;
 595
 596         case V4L2_CID_CONTRAST:
 597                 if (ctrl->value < 0 || ctrl->value > 127) {
 598                         v4l_err(client, "invalid contrast setting %d\n",
 599                                     ctrl->value);
 600                         return -ERANGE;
 601                 }
 602
 603                 cx25840_write(client, 0x415, ctrl->value << 1);
 604                 break;
 605
 606         case V4L2_CID_SATURATION:
 607                 if (ctrl->value < 0 || ctrl->value > 127) {
 608                         v4l_err(client, "invalid saturation setting %d\n",
 609                                     ctrl->value);
 610                         return -ERANGE;
 611                 }
 612
 613                 cx25840_write(client, 0x420, ctrl->value << 1);
 614                 cx25840_write(client, 0x421, ctrl->value << 1);
 615                 break;
 616
 617         case V4L2_CID_HUE:
 618                 if (ctrl->value < -127 || ctrl->value > 127) {
 619                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
 620                         return -ERANGE;
 621                 }
 622
 623                 cx25840_write(client, 0x422, ctrl->value);
 624                 break;
 625
 626         case V4L2_CID_AUDIO_VOLUME:
 627         case V4L2_CID_AUDIO_BASS:
 628         case V4L2_CID_AUDIO_TREBLE:
 629         case V4L2_CID_AUDIO_BALANCE:
 630         case V4L2_CID_AUDIO_MUTE:
 631                 if (state->is_cx25836)
 632                         return -EINVAL;
 633                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 634
 635         default:
 636                 return -EINVAL;
 637         }
 638
 639         return 0;
 640 }
 641
 642 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 643 {
 644         struct cx25840_state *state = i2c_get_clientdata(client);
 645
 646         switch (ctrl->id) {
 647         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 648                 ctrl->value = state->pvr150_workaround;
 649                 break;
 650         case V4L2_CID_BRIGHTNESS:
 651                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
 652                 break;
 653         case V4L2_CID_CONTRAST:
 654                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 655                 break;
 656         case V4L2_CID_SATURATION:
 657                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 658                 break;
 659         case V4L2_CID_HUE:
 660                 ctrl->value = (s8)cx25840_read(client, 0x422);
 661                 break;
 662         case V4L2_CID_AUDIO_VOLUME:
 663         case V4L2_CID_AUDIO_BASS:
 664         case V4L2_CID_AUDIO_TREBLE:
 665         case V4L2_CID_AUDIO_BALANCE:
 666         case V4L2_CID_AUDIO_MUTE:
 667                 if (state->is_cx25836)
 668                         return -EINVAL;
 669                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 670         default:
 671                 return -EINVAL;
 672         }
 673
 674         return 0;
 675 }
 676
 677 /* ----------------------------------------------------------------------- */
 678
 679 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 680 {
 681         switch (fmt->type) {
 682         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 683                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 684         default:
 685                 return -EINVAL;
 686         }
 687
 688         return 0;
 689 }
 690
 691 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
 692 {
 693         struct cx25840_state *state = i2c_get_clientdata(client);
 694         struct v4l2_pix_format *pix;
 695         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 696         int is_50Hz = !(state->std & V4L2_STD_525_60);
 697
 698         switch (fmt->type) {
 699         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 700                 pix = &(fmt->fmt.pix);
 701
 702                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 703                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 704
 705                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 706                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 707
 708                 Vlines = pix->height + (is_50Hz ? 4 : 7);
 709
 710                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 711                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 712                         v4l_err(client, "%dx%d is not a valid size!\n",
 713                                     pix->width, pix->height);
 714                         return -ERANGE;
 715                 }
 716
 717                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 718                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 719                 VSC &= 0x1fff;
 720
 721                 if (pix->width >= 385)
 722                         filter = 0;
 723                 else if (pix->width > 192)
 724                         filter = 1;
 725                 else if (pix->width > 96)
 726                         filter = 2;
 727                 else
 728                         filter = 3;
 729
 730                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
 731                             pix->width, pix->height, HSC, VSC);
 732
 733                 /* HSCALE=HSC */
 734                 cx25840_write(client, 0x418, HSC & 0xff);
 735                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 736                 cx25840_write(client, 0x41a, HSC >> 16);
 737                 /* VSCALE=VSC */
 738                 cx25840_write(client, 0x41c, VSC & 0xff);
 739                 cx25840_write(client, 0x41d, VSC >> 8);
 740                 /* VS_INTRLACE=1 VFILT=filter */
 741                 cx25840_write(client, 0x41e, 0x8 | filter);
 742                 break;
 743
 744         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 745                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 746
 747         case V4L2_BUF_TYPE_VBI_CAPTURE:
 748                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 749
 750         default:
 751                 return -EINVAL;
 752         }
 753
 754         return 0;
 755 }
 756
 757 /* ----------------------------------------------------------------------- */
 758
 759 static void log_video_status(struct i2c_client *client)
 760 {
 761         static const char *const fmt_strs[] = {
 762                 "0x0",
 763                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 764                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 765                 "0x9", "0xA", "0xB",
 766                 "SECAM",
 767                 "0xD", "0xE", "0xF"
 768         };
 769
 770         struct cx25840_state *state = i2c_get_clientdata(client);
 771         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
 772         u8 gen_stat1 = cx25840_read(client, 0x40d);
 773         u8 gen_stat2 = cx25840_read(client, 0x40e);
 774         int vid_input = state->vid_input;
 775
 776         v4l_info(client, "Video signal:              %spresent\n",
 777                     (gen_stat2 & 0x20) ? "" : "not ");
 778         v4l_info(client, "Detected format:           %s\n",
 779                     fmt_strs[gen_stat1 & 0xf]);
 780
 781         v4l_info(client, "Specified standard:        %s\n",
 782                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
 783
 784         if (vid_input >= CX25840_COMPOSITE1 &&
 785             vid_input <= CX25840_COMPOSITE8) {
 786                 v4l_info(client, "Specified video input:     Composite %d\n",
 787                         vid_input - CX25840_COMPOSITE1 + 1);
 788         } else {
 789                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
 790                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
 791         }
 792
 793         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
 794 }
 795
 796 /* ----------------------------------------------------------------------- */
 797
 798 static void log_audio_status(struct i2c_client *client)
 799 {
 800         struct cx25840_state *state = i2c_get_clientdata(client);
 801         u8 download_ctl = cx25840_read(client, 0x803);
 802         u8 mod_det_stat0 = cx25840_read(client, 0x804);
 803         u8 mod_det_stat1 = cx25840_read(client, 0x805);
 804         u8 audio_config = cx25840_read(client, 0x808);
 805         u8 pref_mode = cx25840_read(client, 0x809);
 806         u8 afc0 = cx25840_read(client, 0x80b);
 807         u8 mute_ctl = cx25840_read(client, 0x8d3);
 808         int aud_input = state->aud_input;
 809         char *p;
 810
 811         switch (mod_det_stat0) {
 812         case 0x00: p = "mono"; break;
 813         case 0x01: p = "stereo"; break;
 814         case 0x02: p = "dual"; break;
 815         case 0x04: p = "tri"; break;
 816         case 0x10: p = "mono with SAP"; break;
 817         case 0x11: p = "stereo with SAP"; break;
 818         case 0x12: p = "dual with SAP"; break;
 819         case 0x14: p = "tri with SAP"; break;
 820         case 0xfe: p = "forced mode"; break;
 821         default: p = "not defined";
 822         }
 823         v4l_info(client, "Detected audio mode:       %s\n", p);
 824
 825         switch (mod_det_stat1) {
 826         case 0x00: p = "not defined"; break;
 827         case 0x01: p = "EIAJ"; break;
 828         case 0x02: p = "A2-M"; break;
 829         case 0x03: p = "A2-BG"; break;
 830         case 0x04: p = "A2-DK1"; break;
 831         case 0x05: p = "A2-DK2"; break;
 832         case 0x06: p = "A2-DK3"; break;
 833         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
 834         case 0x08: p = "AM-L"; break;
 835         case 0x09: p = "NICAM-BG"; break;
 836         case 0x0a: p = "NICAM-DK"; break;
 837         case 0x0b: p = "NICAM-I"; break;
 838         case 0x0c: p = "NICAM-L"; break;
 839         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
 840         case 0x0e: p = "IF FM Radio"; break;
 841         case 0x0f: p = "BTSC"; break;
 842         case 0x10: p = "high-deviation FM"; break;
 843         case 0x11: p = "very high-deviation FM"; break;
 844         case 0xfd: p = "unknown audio standard"; break;
 845         case 0xfe: p = "forced audio standard"; break;
 846         case 0xff: p = "no detected audio standard"; break;
 847         default: p = "not defined";
 848         }
 849         v4l_info(client, "Detected audio standard:   %s\n", p);
 850         v4l_info(client, "Audio muted:               %s\n",
 851                     (state->unmute_volume >= 0) ? "yes" : "no");
 852         v4l_info(client, "Audio microcontroller:     %s\n",
 853                     (download_ctl & 0x10) ?
 854                                 ((mute_ctl & 0x2) ? "detecting" : "running") : "stopped");
 855
 856         switch (audio_config >> 4) {
 857         case 0x00: p = "undefined"; break;
 858         case 0x01: p = "BTSC"; break;
 859         case 0x02: p = "EIAJ"; break;
 860         case 0x03: p = "A2-M"; break;
 861         case 0x04: p = "A2-BG"; break;
 862         case 0x05: p = "A2-DK1"; break;
 863         case 0x06: p = "A2-DK2"; break;
 864         case 0x07: p = "A2-DK3"; break;
 865         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
 866         case 0x09: p = "AM-L"; break;
 867         case 0x0a: p = "NICAM-BG"; break;
 868         case 0x0b: p = "NICAM-DK"; break;
 869         case 0x0c: p = "NICAM-I"; break;
 870         case 0x0d: p = "NICAM-L"; break;
 871         case 0x0e: p = "FM radio"; break;
 872         case 0x0f: p = "automatic detection"; break;
 873         default: p = "undefined";
 874         }
 875         v4l_info(client, "Configured audio standard: %s\n", p);
 876
 877         if ((audio_config >> 4) < 0xF) {
 878                 switch (audio_config & 0xF) {
 879                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
 880                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
 881                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
 882                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
 883                 case 0x04: p = "STEREO"; break;
 884                 case 0x05: p = "DUAL1 (AB)"; break;
 885                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
 886                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
 887                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
 888                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
 889                 case 0x0a: p = "SAP"; break;
 890                 default: p = "undefined";
 891                 }
 892                 v4l_info(client, "Configured audio mode:     %s\n", p);
 893         } else {
 894                 switch (audio_config & 0xF) {
 895                 case 0x00: p = "BG"; break;
 896                 case 0x01: p = "DK1"; break;
 897                 case 0x02: p = "DK2"; break;
 898                 case 0x03: p = "DK3"; break;
 899                 case 0x04: p = "I"; break;
 900                 case 0x05: p = "L"; break;
 901                 case 0x06: p = "BTSC"; break;
 902                 case 0x07: p = "EIAJ"; break;
 903                 case 0x08: p = "A2-M"; break;
 904                 case 0x09: p = "FM Radio"; break;
 905                 case 0x0f: p = "automatic standard and mode detection"; break;
 906                 default: p = "undefined";
 907                 }
 908                 v4l_info(client, "Configured audio system:   %s\n", p);
 909         }
 910
 911         if (aud_input) {
 912                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
 913         } else {
 914                 v4l_info(client, "Specified audio input:     External\n");
 915         }
 916
 917         switch (pref_mode & 0xf) {
 918         case 0: p = "mono/language A"; break;
 919         case 1: p = "language B"; break;
 920         case 2: p = "language C"; break;
 921         case 3: p = "analog fallback"; break;
 922         case 4: p = "stereo"; break;
 923         case 5: p = "language AC"; break;
 924         case 6: p = "language BC"; break;
 925         case 7: p = "language AB"; break;
 926         default: p = "undefined";
 927         }
 928         v4l_info(client, "Preferred audio mode:      %s\n", p);
 929
 930         if ((audio_config & 0xf) == 0xf) {
 931                 switch ((afc0 >> 3) & 0x3) {
 932                 case 0: p = "system DK"; break;
 933                 case 1: p = "system L"; break;
 934                 case 2: p = "autodetect"; break;
 935                 default: p = "undefined";
 936                 }
 937                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
 938
 939                 switch (afc0 & 0x7) {
 940                 case 0: p = "chroma"; break;
 941                 case 1: p = "BTSC"; break;
 942                 case 2: p = "EIAJ"; break;
 943                 case 3: p = "A2-M"; break;
 944                 case 4: p = "autodetect"; break;
 945                 default: p = "undefined";
 946                 }
 947                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
 948         }
 949 }
 950
 951 /* ----------------------------------------------------------------------- */
 952
 953 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
 954                            void *arg)
 955 {
 956         struct cx25840_state *state = i2c_get_clientdata(client);
 957         struct v4l2_tuner *vt = arg;
 958         struct v4l2_routing *route = arg;
 959
 960         /* ignore these commands */
 961         switch (cmd) {
 962                 case TUNER_SET_TYPE_ADDR:
 963                         return 0;
 964         }
 965
 966         if (!state->is_initialized) {
 967                 v4l_dbg(1, cx25840_debug, client, "cmd %08x triggered fw load\n", cmd);
 968                 /* initialize on first use */
 969                 state->is_initialized = 1;
 970                 if (state->is_cx25836)
 971                         cx25836_initialize(client);
 972                 else if (state->is_cx23885)
 973                         cx23885_initialize(client);
 974                 else
 975                         cx25840_initialize(client);
 976         }
 977
 978         switch (cmd) {
 979 #ifdef CONFIG_VIDEO_ADV_DEBUG
 980         /* ioctls to allow direct access to the
 981          * cx25840 registers for testing */
 982         case VIDIOC_DBG_G_REGISTER:
 983         case VIDIOC_DBG_S_REGISTER:
 984         {
 985                 struct v4l2_register *reg = arg;
 986
 987                 if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
 988                         return -EINVAL;
 989                 if (!capable(CAP_SYS_ADMIN))
 990                         return -EPERM;
 991
 992                 if (cmd == VIDIOC_DBG_G_REGISTER)
 993                         reg->val = cx25840_read(client, reg->reg & 0x0fff);
 994                 else
 995                         cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 996                 break;
 997         }
 998 #endif
 999
1000         case VIDIOC_INT_DECODE_VBI_LINE:
1001                 return cx25840_vbi(client, cmd, arg);
1002
1003         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
1004                 return cx25840_audio(client, cmd, arg);
1005
1006         case VIDIOC_STREAMON:
1007                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
1008                 if (state->is_cx23885) {
1009                         u8 v = (cx25840_read(client, 0x421) | 0x0b);
1010                         cx25840_write(client, 0x421, v);
1011                 } else {
1012                         cx25840_write(client, 0x115,
1013                                 state->is_cx25836 ? 0x0c : 0x8c);
1014                         cx25840_write(client, 0x116,
1015                                 state->is_cx25836 ? 0x04 : 0x07);
1016                 }
1017                 break;
1018
1019         case VIDIOC_STREAMOFF:
1020                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
1021                 if (state->is_cx23885) {
1022                         u8 v = cx25840_read(client, 0x421) & ~(0x0b);
1023                         cx25840_write(client, 0x421, v);
1024                 } else {
1025                         cx25840_write(client, 0x115, 0x00);
1026                         cx25840_write(client, 0x116, 0x00);
1027                 }
1028                 break;
1029
1030         case VIDIOC_LOG_STATUS:
1031                 log_video_status(client);
1032                 if (!state->is_cx25836)
1033                         log_audio_status(client);
1034                 break;
1035
1036         case VIDIOC_G_CTRL:
1037                 return get_v4lctrl(client, (struct v4l2_control *)arg);
1038
1039         case VIDIOC_S_CTRL:
1040                 return set_v4lctrl(client, (struct v4l2_control *)arg);
1041
1042         case VIDIOC_QUERYCTRL:
1043         {
1044                 struct v4l2_queryctrl *qc = arg;
1045
1046                 switch (qc->id) {
1047                         case V4L2_CID_BRIGHTNESS:
1048                         case V4L2_CID_CONTRAST:
1049                         case V4L2_CID_SATURATION:
1050                         case V4L2_CID_HUE:
1051                                 return v4l2_ctrl_query_fill_std(qc);
1052                         default:
1053                                 break;
1054                 }
1055                 if (state->is_cx25836)
1056                         return -EINVAL;
1057
1058                 switch (qc->id) {
1059                         case V4L2_CID_AUDIO_VOLUME:
1060                         case V4L2_CID_AUDIO_MUTE:
1061                         case V4L2_CID_AUDIO_BALANCE:
1062                         case V4L2_CID_AUDIO_BASS:
1063                         case V4L2_CID_AUDIO_TREBLE:
1064                                 return v4l2_ctrl_query_fill_std(qc);
1065                         default:
1066                                 return -EINVAL;
1067                 }
1068                 return -EINVAL;
1069         }
1070
1071         case VIDIOC_G_STD:
1072                 *(v4l2_std_id *)arg = state->std;
1073                 break;
1074
1075         case VIDIOC_S_STD:
1076                 if (state->radio == 0 && state->std == *(v4l2_std_id *)arg)
1077                         return 0;
1078                 state->radio = 0;
1079                 state->std = *(v4l2_std_id *)arg;
1080                 return set_v4lstd(client);
1081
1082         case AUDC_SET_RADIO:
1083                 state->radio = 1;
1084                 break;
1085
1086         case VIDIOC_INT_G_VIDEO_ROUTING:
1087                 route->input = state->vid_input;
1088                 route->output = 0;
1089                 break;
1090
1091         case VIDIOC_INT_S_VIDEO_ROUTING:
1092                 return set_input(client, route->input, state->aud_input);
1093
1094         case VIDIOC_INT_G_AUDIO_ROUTING:
1095                 if (state->is_cx25836)
1096                         return -EINVAL;
1097                 route->input = state->aud_input;
1098                 route->output = 0;
1099                 break;
1100
1101         case VIDIOC_INT_S_AUDIO_ROUTING:
1102                 if (state->is_cx25836)
1103                         return -EINVAL;
1104                 return set_input(client, state->vid_input, route->input);
1105
1106         case VIDIOC_S_FREQUENCY:
1107                 if (!state->is_cx25836) {
1108                         input_change(client);
1109                 }
1110                 break;
1111
1112         case VIDIOC_G_TUNER:
1113         {
1114                 u8 vpres = cx25840_read(client, 0x40e) & 0x20;
1115                 u8 mode;
1116                 int val = 0;
1117
1118                 if (state->radio)
1119                         break;
1120
1121                 vt->signal = vpres ? 0xffff : 0x0;
1122                 if (state->is_cx25836)
1123                         break;
1124
1125                 vt->capability |=
1126                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
1127                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
1128
1129                 mode = cx25840_read(client, 0x804);
1130
1131                 /* get rxsubchans and audmode */
1132                 if ((mode & 0xf) == 1)
1133                         val |= V4L2_TUNER_SUB_STEREO;
1134                 else
1135                         val |= V4L2_TUNER_SUB_MONO;
1136
1137                 if (mode == 2 || mode == 4)
1138                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1139
1140                 if (mode & 0x10)
1141                         val |= V4L2_TUNER_SUB_SAP;
1142
1143                 vt->rxsubchans = val;
1144                 vt->audmode = state->audmode;
1145                 break;
1146         }
1147
1148         case VIDIOC_S_TUNER:
1149                 if (state->radio || state->is_cx25836)
1150                         break;
1151
1152                 switch (vt->audmode) {
1153                 case V4L2_TUNER_MODE_MONO:
1154                         /* mono      -> mono
1155                            stereo    -> mono
1156                            bilingual -> lang1 */
1157                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
1158                         break;
1159                 case V4L2_TUNER_MODE_STEREO:
1160                 case V4L2_TUNER_MODE_LANG1:
1161                         /* mono      -> mono
1162                            stereo    -> stereo
1163                            bilingual -> lang1 */
1164                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
1165                         break;
1166                 case V4L2_TUNER_MODE_LANG1_LANG2:
1167                         /* mono      -> mono
1168                            stereo    -> stereo
1169                            bilingual -> lang1/lang2 */
1170                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
1171                         break;
1172                 case V4L2_TUNER_MODE_LANG2:
1173                         /* mono      -> mono
1174                            stereo    -> stereo
1175                            bilingual -> lang2 */
1176                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
1177                         break;
1178                 default:
1179                         return -EINVAL;
1180                 }
1181                 state->audmode = vt->audmode;
1182                 break;
1183
1184         case VIDIOC_G_FMT:
1185                 return get_v4lfmt(client, (struct v4l2_format *)arg);
1186
1187         case VIDIOC_S_FMT:
1188                 return set_v4lfmt(client, (struct v4l2_format *)arg);
1189
1190         case VIDIOC_INT_RESET:
1191                 if (state->is_cx25836)
1192                         cx25836_initialize(client);
1193                 else if (state->is_cx23885)
1194                         cx23885_initialize(client);
1195                 else
1196                         cx25840_initialize(client);
1197                 break;
1198
1199         case VIDIOC_G_CHIP_IDENT:
1200                 return v4l2_chip_ident_i2c_client(client, arg, state->id, state->rev);
1201
1202         default:
1203                 return -EINVAL;
1204         }
1205
1206         return 0;
1207 }
1208
1209 /* ----------------------------------------------------------------------- */
1210
1211 static int cx25840_probe(struct i2c_client *client,
1212                          const struct i2c_device_id *did)
1213 {
1214         struct cx25840_state *state;
1215         u32 id;
1216         u16 device_id;
1217
1218         /* Check if the adapter supports the needed features */
1219         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1220                 return -EIO;
1221
1222         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", client->addr << 1);
1223
1224         device_id = cx25840_read(client, 0x101) << 8;
1225         device_id |= cx25840_read(client, 0x100);
1226         v4l_dbg(1, cx25840_debug, client, "device_id = 0x%04x\n", device_id);
1227
1228         /* The high byte of the device ID should be
1229          * 0x83 for the cx2583x and 0x84 for the cx2584x */
1230         if ((device_id & 0xff00) == 0x8300) {
1231                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1232         }
1233         else if ((device_id & 0xff00) == 0x8400) {
1234                 id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
1235         } else if (device_id == 0x0000) {
1236                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1237         } else if (device_id == 0x1313) {
1238                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1239         }
1240         else {
1241                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
1242                 return -ENODEV;
1243         }
1244
1245         state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
1246         if (state == NULL) {
1247                 return -ENOMEM;
1248         }
1249
1250         /* Note: revision '(device_id & 0x0f) == 2' was never built. The
1251            marking skips from 0x1 == 22 to 0x3 == 23. */
1252         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
1253                     (device_id & 0xfff0) >> 4,
1254                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : (device_id & 0x0f),
1255                     client->addr << 1, client->adapter->name);
1256
1257         i2c_set_clientdata(client, state);
1258         state->c = client;
1259         state->is_cx25836 = ((device_id & 0xff00) == 0x8300);
1260         state->is_cx23885 = (device_id == 0x0000) || (device_id == 0x1313);
1261         state->vid_input = CX25840_COMPOSITE7;
1262         state->aud_input = CX25840_AUDIO8;
1263         state->audclk_freq = 48000;
1264         state->pvr150_workaround = 0;
1265         state->audmode = V4L2_TUNER_MODE_LANG1;
1266         state->unmute_volume = -1;
1267         state->vbi_line_offset = 8;
1268         state->id = id;
1269         state->rev = device_id;
1270
1271         if (state->is_cx23885) {
1272                 /* Drive GPIO2 direction and values */
1273                 cx25840_write(client, 0x160, 0x1d);
1274                 cx25840_write(client, 0x164, 0x00);
1275         }
1276
1277         return 0;
1278 }
1279
1280 static int cx25840_remove(struct i2c_client *client)
1281 {
1282         kfree(i2c_get_clientdata(client));
1283         return 0;
1284 }
1285
1286 static const struct i2c_device_id cx25840_id[] = {
1287         { "cx25840", 0 },
1288         { }
1289 };
1290 MODULE_DEVICE_TABLE(i2c, cx25840_id);
1291
1292 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
1293         .name = "cx25840",
1294         .driverid = I2C_DRIVERID_CX25840,
1295         .command = cx25840_command,
1296         .probe = cx25840_probe,
1297         .remove = cx25840_remove,
1298         .id_table = cx25840_id,
1299 };