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@linuxtv.org>.
  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 static 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 = to_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_std_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 = to_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_std_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 void cx25840_std_setup(struct i2c_client *client)
 352 {
 353         struct cx25840_state *state = to_state(i2c_get_clientdata(client));
 354         v4l2_std_id std = state->std;
 355         int hblank, hactive, burst, vblank, vactive, sc;
 356         int vblank656, src_decimation;
 357         int luma_lpf, uv_lpf, comb;
 358         u32 pll_int, pll_frac, pll_post;
 359
 360         /* datasheet startup, step 8d */
 361         if (std & ~V4L2_STD_NTSC)
 362                 cx25840_write(client, 0x49f, 0x11);
 363         else
 364                 cx25840_write(client, 0x49f, 0x14);
 365
 366         if (std & V4L2_STD_625_50) {
 367                 hblank = 132;
 368                 hactive = 720;
 369                 burst = 93;
 370                 vblank = 36;
 371                 vactive = 580;
 372                 vblank656 = 40;
 373                 src_decimation = 0x21f;
 374                 luma_lpf = 2;
 375
 376                 if (std & V4L2_STD_SECAM) {
 377                         uv_lpf = 0;
 378                         comb = 0;
 379                         sc = 0x0a425f;
 380                 } else if (std == V4L2_STD_PAL_Nc) {
 381                         uv_lpf = 1;
 382                         comb = 0x20;
 383                         sc = 556453;
 384                 } else {
 385                         uv_lpf = 1;
 386                         comb = 0x20;
 387                         sc = 688739;
 388                 }
 389         } else {
 390                 hactive = 720;
 391                 hblank = 122;
 392                 vactive = 487;
 393                 luma_lpf = 1;
 394                 uv_lpf = 1;
 395
 396                 src_decimation = 0x21f;
 397                 if (std == V4L2_STD_PAL_60) {
 398                         vblank = 26;
 399                         vblank656 = 26;
 400                         burst = 0x5b;
 401                         luma_lpf = 2;
 402                         comb = 0x20;
 403                         sc = 688739;
 404                 } else if (std == V4L2_STD_PAL_M) {
 405                         vblank = 20;
 406                         vblank656 = 24;
 407                         burst = 0x61;
 408                         comb = 0x20;
 409                         sc = 555452;
 410                 } else {
 411                         vblank = 26;
 412                         vblank656 = 26;
 413                         burst = 0x5b;
 414                         comb = 0x66;
 415                         sc = 556063;
 416                 }
 417         }
 418
 419         /* DEBUG: Displays configured PLL frequency */
 420         pll_int = cx25840_read(client, 0x108);
 421         pll_frac = cx25840_read4(client, 0x10c) & 0x1ffffff;
 422         pll_post = cx25840_read(client, 0x109);
 423         v4l_dbg(1, cx25840_debug, client,
 424                                 "PLL regs = int: %u, frac: %u, post: %u\n",
 425                                 pll_int, pll_frac, pll_post);
 426
 427         if (pll_post) {
 428                 int fin, fsc;
 429                 int pll = (28636363L * ((((u64)pll_int) << 25L) + pll_frac)) >> 25L;
 430
 431                 pll /= pll_post;
 432                 v4l_dbg(1, cx25840_debug, client, "PLL = %d.%06d MHz\n",
 433                                 pll / 1000000, pll % 1000000);
 434                 v4l_dbg(1, cx25840_debug, client, "PLL/8 = %d.%06d MHz\n",
 435                                 pll / 8000000, (pll / 8) % 1000000);
 436
 437                 fin = ((u64)src_decimation * pll) >> 12;
 438                 v4l_dbg(1, cx25840_debug, client,
 439                                 "ADC Sampling freq = %d.%06d MHz\n",
 440                                 fin / 1000000, fin % 1000000);
 441
 442                 fsc = (((u64)sc) * pll) >> 24L;
 443                 v4l_dbg(1, cx25840_debug, client,
 444                                 "Chroma sub-carrier freq = %d.%06d MHz\n",
 445                                 fsc / 1000000, fsc % 1000000);
 446
 447                 v4l_dbg(1, cx25840_debug, client, "hblank %i, hactive %i, "
 448                         "vblank %i, vactive %i, vblank656 %i, src_dec %i, "
 449                         "burst 0x%02x, luma_lpf %i, uv_lpf %i, comb 0x%02x, "
 450                         "sc 0x%06x\n",
 451                         hblank, hactive, vblank, vactive, vblank656,
 452                         src_decimation, burst, luma_lpf, uv_lpf, comb, sc);
 453         }
 454
 455         /* Sets horizontal blanking delay and active lines */
 456         cx25840_write(client, 0x470, hblank);
 457         cx25840_write(client, 0x471,
 458                         0xff & (((hblank >> 8) & 0x3) | (hactive << 4)));
 459         cx25840_write(client, 0x472, hactive >> 4);
 460
 461         /* Sets burst gate delay */
 462         cx25840_write(client, 0x473, burst);
 463
 464         /* Sets vertical blanking delay and active duration */
 465         cx25840_write(client, 0x474, vblank);
 466         cx25840_write(client, 0x475,
 467                         0xff & (((vblank >> 8) & 0x3) | (vactive << 4)));
 468         cx25840_write(client, 0x476, vactive >> 4);
 469         cx25840_write(client, 0x477, vblank656);
 470
 471         /* Sets src decimation rate */
 472         cx25840_write(client, 0x478, 0xff & src_decimation);
 473         cx25840_write(client, 0x479, 0xff & (src_decimation >> 8));
 474
 475         /* Sets Luma and UV Low pass filters */
 476         cx25840_write(client, 0x47a, luma_lpf << 6 | ((uv_lpf << 4) & 0x30));
 477
 478         /* Enables comb filters */
 479         cx25840_write(client, 0x47b, comb);
 480
 481         /* Sets SC Step*/
 482         cx25840_write(client, 0x47c, sc);
 483         cx25840_write(client, 0x47d, 0xff & sc >> 8);
 484         cx25840_write(client, 0x47e, 0xff & sc >> 16);
 485
 486         /* Sets VBI parameters */
 487         if (std & V4L2_STD_625_50) {
 488                 cx25840_write(client, 0x47f, 0x01);
 489                 state->vbi_line_offset = 5;
 490         } else {
 491                 cx25840_write(client, 0x47f, 0x00);
 492                 state->vbi_line_offset = 8;
 493         }
 494 }
 495
 496 /* ----------------------------------------------------------------------- */
 497
 498 static void input_change(struct i2c_client *client)
 499 {
 500         struct cx25840_state *state = to_state(i2c_get_clientdata(client));
 501         v4l2_std_id std = state->std;
 502
 503         /* Follow step 8c and 8d of section 3.16 in the cx25840 datasheet */
 504         if (std & V4L2_STD_SECAM) {
 505                 cx25840_write(client, 0x402, 0);
 506         }
 507         else {
 508                 cx25840_write(client, 0x402, 0x04);
 509                 cx25840_write(client, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
 510         }
 511         cx25840_and_or(client, 0x401, ~0x60, 0);
 512         cx25840_and_or(client, 0x401, ~0x60, 0x60);
 513         cx25840_and_or(client, 0x810, ~0x01, 1);
 514
 515         if (state->radio) {
 516                 cx25840_write(client, 0x808, 0xf9);
 517                 cx25840_write(client, 0x80b, 0x00);
 518         }
 519         else if (std & V4L2_STD_525_60) {
 520                 /* Certain Hauppauge PVR150 models have a hardware bug
 521                    that causes audio to drop out. For these models the
 522                    audio standard must be set explicitly.
 523                    To be precise: it affects cards with tuner models
 524                    85, 99 and 112 (model numbers from tveeprom). */
 525                 int hw_fix = state->pvr150_workaround;
 526
 527                 if (std == V4L2_STD_NTSC_M_JP) {
 528                         /* Japan uses EIAJ audio standard */
 529                         cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
 530                 } else if (std == V4L2_STD_NTSC_M_KR) {
 531                         /* South Korea uses A2 audio standard */
 532                         cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
 533                 } else {
 534                         /* Others use the BTSC audio standard */
 535                         cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
 536                 }
 537                 cx25840_write(client, 0x80b, 0x00);
 538         } else if (std & V4L2_STD_PAL) {
 539                 /* Follow tuner change procedure for PAL */
 540                 cx25840_write(client, 0x808, 0xff);
 541                 cx25840_write(client, 0x80b, 0x10);
 542         } else if (std & V4L2_STD_SECAM) {
 543                 /* Select autodetect for SECAM */
 544                 cx25840_write(client, 0x808, 0xff);
 545                 cx25840_write(client, 0x80b, 0x10);
 546         }
 547
 548         cx25840_and_or(client, 0x810, ~0x01, 0);
 549 }
 550
 551 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
 552                                                 enum cx25840_audio_input aud_input)
 553 {
 554         struct cx25840_state *state = to_state(i2c_get_clientdata(client));
 555         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
 556                            vid_input <= CX25840_COMPOSITE8);
 557         u8 reg;
 558
 559         v4l_dbg(1, cx25840_debug, client,
 560                 "decoder set video input %d, audio input %d\n",
 561                 vid_input, aud_input);
 562
 563         if (vid_input >= CX25840_VIN1_CH1) {
 564                 v4l_dbg(1, cx25840_debug, client, "vid_input 0x%x\n",
 565                         vid_input);
 566                 reg = vid_input & 0xff;
 567                 if ((vid_input & CX25840_SVIDEO_ON) == CX25840_SVIDEO_ON)
 568                         is_composite = 0;
 569                 else
 570                         is_composite = 1;
 571
 572                 v4l_dbg(1, cx25840_debug, client, "mux cfg 0x%x comp=%d\n",
 573                         reg, is_composite);
 574         } else
 575         if (is_composite) {
 576                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
 577         } else {
 578                 int luma = vid_input & 0xf0;
 579                 int chroma = vid_input & 0xf00;
 580
 581                 if ((vid_input & ~0xff0) ||
 582                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA8 ||
 583                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
 584                         v4l_err(client, "0x%04x is not a valid video input!\n",
 585                                 vid_input);
 586                         return -EINVAL;
 587                 }
 588                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
 589                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
 590                         reg &= 0x3f;
 591                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
 592                 } else {
 593                         reg &= 0xcf;
 594                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
 595                 }
 596         }
 597
 598         /* The caller has previously prepared the correct routing
 599          * configuration in reg (for the cx23885) so we have no
 600          * need to attempt to flip bits for earlier av decoders.
 601          */
 602         if (!state->is_cx23885) {
 603                 switch (aud_input) {
 604                 case CX25840_AUDIO_SERIAL:
 605                         /* do nothing, use serial audio input */
 606                         break;
 607                 case CX25840_AUDIO4: reg &= ~0x30; break;
 608                 case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
 609                 case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
 610                 case CX25840_AUDIO7: reg &= ~0xc0; break;
 611                 case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
 612
 613                 default:
 614                         v4l_err(client, "0x%04x is not a valid audio input!\n",
 615                                 aud_input);
 616                         return -EINVAL;
 617                 }
 618         }
 619
 620         cx25840_write(client, 0x103, reg);
 621
 622         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
 623         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
 624
 625         if (!state->is_cx23885) {
 626                 /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
 627                 cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
 628                 /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2&CH3 */
 629                 if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
 630                         cx25840_and_or(client, 0x102, ~0x4, 4);
 631                 else
 632                         cx25840_and_or(client, 0x102, ~0x4, 0);
 633         } else {
 634                 if (is_composite)
 635                         /* ADC2 input select channel 2 */
 636                         cx25840_and_or(client, 0x102, ~0x2, 0);
 637                 else
 638                         /* ADC2 input select channel 3 */
 639                         cx25840_and_or(client, 0x102, ~0x2, 2);
 640         }
 641
 642         state->vid_input = vid_input;
 643         state->aud_input = aud_input;
 644         if (!state->is_cx25836) {
 645                 cx25840_audio_set_path(client);
 646                 input_change(client);
 647         }
 648
 649         if (state->is_cx23885) {
 650                 /* Audio channel 1 src : Parallel 1 */
 651                 cx25840_write(client, 0x124, 0x03);
 652
 653                 /* Select AFE clock pad output source */
 654                 cx25840_write(client, 0x144, 0x05);
 655
 656                 /* I2S_IN_CTL: I2S_IN_SONY_MODE, LEFT SAMPLE on WS=1 */
 657                 cx25840_write(client, 0x914, 0xa0);
 658
 659                 /* I2S_OUT_CTL:
 660                  * I2S_IN_SONY_MODE, LEFT SAMPLE on WS=1
 661                  * I2S_OUT_MASTER_MODE = Master
 662                  */
 663                 cx25840_write(client, 0x918, 0xa0);
 664                 cx25840_write(client, 0x919, 0x01);
 665         }
 666
 667         return 0;
 668 }
 669
 670 /* ----------------------------------------------------------------------- */
 671
 672 static int set_v4lstd(struct i2c_client *client)
 673 {
 674         struct cx25840_state *state = to_state(i2c_get_clientdata(client));
 675         u8 fmt = 0;     /* zero is autodetect */
 676         u8 pal_m = 0;
 677
 678         /* First tests should be against specific std */
 679         if (state->std == V4L2_STD_NTSC_M_JP) {
 680                 fmt = 0x2;
 681         } else if (state->std == V4L2_STD_NTSC_443) {
 682                 fmt = 0x3;
 683         } else if (state->std == V4L2_STD_PAL_M) {
 684                 pal_m = 1;
 685                 fmt = 0x5;
 686         } else if (state->std == V4L2_STD_PAL_N) {
 687                 fmt = 0x6;
 688         } else if (state->std == V4L2_STD_PAL_Nc) {
 689                 fmt = 0x7;
 690         } else if (state->std == V4L2_STD_PAL_60) {
 691                 fmt = 0x8;
 692         } else {
 693                 /* Then, test against generic ones */
 694                 if (state->std & V4L2_STD_NTSC)
 695                         fmt = 0x1;
 696                 else if (state->std & V4L2_STD_PAL)
 697                         fmt = 0x4;
 698                 else if (state->std & V4L2_STD_SECAM)
 699                         fmt = 0xc;
 700         }
 701
 702         v4l_dbg(1, cx25840_debug, client, "changing video std to fmt %i\n",fmt);
 703
 704         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
 705            Without this PAL may display a vertical ghosting effect.
 706            This happens for example with the Yuan MPC622. */
 707         if (fmt >= 4 && fmt < 8) {
 708                 /* Set format to NTSC-M */
 709                 cx25840_and_or(client, 0x400, ~0xf, 1);
 710                 /* Turn off LCOMB */
 711                 cx25840_and_or(client, 0x47b, ~6, 0);
 712         }
 713         cx25840_and_or(client, 0x400, ~0xf, fmt);
 714         cx25840_and_or(client, 0x403, ~0x3, pal_m);
 715         cx25840_std_setup(client);
 716         if (!state->is_cx25836)
 717                 input_change(client);
 718         return 0;
 719 }
 720
 721 /* ----------------------------------------------------------------------- */
 722
 723 static int cx25840_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 724 {
 725         struct cx25840_state *state = to_state(sd);
 726         struct i2c_client *client = v4l2_get_subdevdata(sd);
 727
 728         switch (ctrl->id) {
 729         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 730                 state->pvr150_workaround = ctrl->value;
 731                 set_input(client, state->vid_input, state->aud_input);
 732                 break;
 733
 734         case V4L2_CID_BRIGHTNESS:
 735                 if (ctrl->value < 0 || ctrl->value > 255) {
 736                         v4l_err(client, "invalid brightness setting %d\n",
 737                                     ctrl->value);
 738                         return -ERANGE;
 739                 }
 740
 741                 cx25840_write(client, 0x414, ctrl->value - 128);
 742                 break;
 743
 744         case V4L2_CID_CONTRAST:
 745                 if (ctrl->value < 0 || ctrl->value > 127) {
 746                         v4l_err(client, "invalid contrast setting %d\n",
 747                                     ctrl->value);
 748                         return -ERANGE;
 749                 }
 750
 751                 cx25840_write(client, 0x415, ctrl->value << 1);
 752                 break;
 753
 754         case V4L2_CID_SATURATION:
 755                 if (ctrl->value < 0 || ctrl->value > 127) {
 756                         v4l_err(client, "invalid saturation setting %d\n",
 757                                     ctrl->value);
 758                         return -ERANGE;
 759                 }
 760
 761                 cx25840_write(client, 0x420, ctrl->value << 1);
 762                 cx25840_write(client, 0x421, ctrl->value << 1);
 763                 break;
 764
 765         case V4L2_CID_HUE:
 766                 if (ctrl->value < -127 || ctrl->value > 127) {
 767                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
 768                         return -ERANGE;
 769                 }
 770
 771                 cx25840_write(client, 0x422, ctrl->value);
 772                 break;
 773
 774         case V4L2_CID_AUDIO_VOLUME:
 775         case V4L2_CID_AUDIO_BASS:
 776         case V4L2_CID_AUDIO_TREBLE:
 777         case V4L2_CID_AUDIO_BALANCE:
 778         case V4L2_CID_AUDIO_MUTE:
 779                 if (state->is_cx25836)
 780                         return -EINVAL;
 781                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
 782
 783         default:
 784                 return -EINVAL;
 785         }
 786
 787         return 0;
 788 }
 789
 790 static int cx25840_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 791 {
 792         struct cx25840_state *state = to_state(sd);
 793         struct i2c_client *client = v4l2_get_subdevdata(sd);
 794
 795         switch (ctrl->id) {
 796         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
 797                 ctrl->value = state->pvr150_workaround;
 798                 break;
 799         case V4L2_CID_BRIGHTNESS:
 800                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
 801                 break;
 802         case V4L2_CID_CONTRAST:
 803                 ctrl->value = cx25840_read(client, 0x415) >> 1;
 804                 break;
 805         case V4L2_CID_SATURATION:
 806                 ctrl->value = cx25840_read(client, 0x420) >> 1;
 807                 break;
 808         case V4L2_CID_HUE:
 809                 ctrl->value = (s8)cx25840_read(client, 0x422);
 810                 break;
 811         case V4L2_CID_AUDIO_VOLUME:
 812         case V4L2_CID_AUDIO_BASS:
 813         case V4L2_CID_AUDIO_TREBLE:
 814         case V4L2_CID_AUDIO_BALANCE:
 815         case V4L2_CID_AUDIO_MUTE:
 816                 if (state->is_cx25836)
 817                         return -EINVAL;
 818                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
 819         default:
 820                 return -EINVAL;
 821         }
 822
 823         return 0;
 824 }
 825
 826 /* ----------------------------------------------------------------------- */
 827
 828 static int cx25840_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
 829 {
 830         struct i2c_client *client = v4l2_get_subdevdata(sd);
 831
 832         switch (fmt->type) {
 833         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 834                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
 835         default:
 836                 return -EINVAL;
 837         }
 838         return 0;
 839 }
 840
 841 static int cx25840_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
 842 {
 843         struct cx25840_state *state = to_state(sd);
 844         struct i2c_client *client = v4l2_get_subdevdata(sd);
 845         struct v4l2_pix_format *pix;
 846         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 847         int is_50Hz = !(state->std & V4L2_STD_525_60);
 848
 849         switch (fmt->type) {
 850         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 851                 pix = &(fmt->fmt.pix);
 852
 853                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
 854                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
 855
 856                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
 857                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
 858
 859                 Vlines = pix->height + (is_50Hz ? 4 : 7);
 860
 861                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 862                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 863                         v4l_err(client, "%dx%d is not a valid size!\n",
 864                                     pix->width, pix->height);
 865                         return -ERANGE;
 866                 }
 867
 868                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 869                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 870                 VSC &= 0x1fff;
 871
 872                 if (pix->width >= 385)
 873                         filter = 0;
 874                 else if (pix->width > 192)
 875                         filter = 1;
 876                 else if (pix->width > 96)
 877                         filter = 2;
 878                 else
 879                         filter = 3;
 880
 881                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
 882                             pix->width, pix->height, HSC, VSC);
 883
 884                 /* HSCALE=HSC */
 885                 cx25840_write(client, 0x418, HSC & 0xff);
 886                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
 887                 cx25840_write(client, 0x41a, HSC >> 16);
 888                 /* VSCALE=VSC */
 889                 cx25840_write(client, 0x41c, VSC & 0xff);
 890                 cx25840_write(client, 0x41d, VSC >> 8);
 891                 /* VS_INTRLACE=1 VFILT=filter */
 892                 cx25840_write(client, 0x41e, 0x8 | filter);
 893                 break;
 894
 895         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 896                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 897
 898         case V4L2_BUF_TYPE_VBI_CAPTURE:
 899                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
 900
 901         default:
 902                 return -EINVAL;
 903         }
 904
 905         return 0;
 906 }
 907
 908 /* ----------------------------------------------------------------------- */
 909
 910 static void log_video_status(struct i2c_client *client)
 911 {
 912         static const char *const fmt_strs[] = {
 913                 "0x0",
 914                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 915                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 916                 "0x9", "0xA", "0xB",
 917                 "SECAM",
 918                 "0xD", "0xE", "0xF"
 919         };
 920
 921         struct cx25840_state *state = to_state(i2c_get_clientdata(client));
 922         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
 923         u8 gen_stat1 = cx25840_read(client, 0x40d);
 924         u8 gen_stat2 = cx25840_read(client, 0x40e);
 925         int vid_input = state->vid_input;
 926
 927         v4l_info(client, "Video signal:              %spresent\n",
 928                     (gen_stat2 & 0x20) ? "" : "not ");
 929         v4l_info(client, "Detected format:           %s\n",
 930                     fmt_strs[gen_stat1 & 0xf]);
 931
 932         v4l_info(client, "Specified standard:        %s\n",
 933                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
 934
 935         if (vid_input >= CX25840_COMPOSITE1 &&
 936             vid_input <= CX25840_COMPOSITE8) {
 937                 v4l_info(client, "Specified video input:     Composite %d\n",
 938                         vid_input - CX25840_COMPOSITE1 + 1);
 939         } else {
 940                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
 941                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
 942         }
 943
 944         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
 945 }
 946
 947 /* ----------------------------------------------------------------------- */
 948
 949 static void log_audio_status(struct i2c_client *client)
 950 {
 951         struct cx25840_state *state = to_state(i2c_get_clientdata(client));
 952         u8 download_ctl = cx25840_read(client, 0x803);
 953         u8 mod_det_stat0 = cx25840_read(client, 0x804);
 954         u8 mod_det_stat1 = cx25840_read(client, 0x805);
 955         u8 audio_config = cx25840_read(client, 0x808);
 956         u8 pref_mode = cx25840_read(client, 0x809);
 957         u8 afc0 = cx25840_read(client, 0x80b);
 958         u8 mute_ctl = cx25840_read(client, 0x8d3);
 959         int aud_input = state->aud_input;
 960         char *p;
 961
 962         switch (mod_det_stat0) {
 963         case 0x00: p = "mono"; break;
 964         case 0x01: p = "stereo"; break;
 965         case 0x02: p = "dual"; break;
 966         case 0x04: p = "tri"; break;
 967         case 0x10: p = "mono with SAP"; break;
 968         case 0x11: p = "stereo with SAP"; break;
 969         case 0x12: p = "dual with SAP"; break;
 970         case 0x14: p = "tri with SAP"; break;
 971         case 0xfe: p = "forced mode"; break;
 972         default: p = "not defined";
 973         }
 974         v4l_info(client, "Detected audio mode:       %s\n", p);
 975
 976         switch (mod_det_stat1) {
 977         case 0x00: p = "not defined"; break;
 978         case 0x01: p = "EIAJ"; break;
 979         case 0x02: p = "A2-M"; break;
 980         case 0x03: p = "A2-BG"; break;
 981         case 0x04: p = "A2-DK1"; break;
 982         case 0x05: p = "A2-DK2"; break;
 983         case 0x06: p = "A2-DK3"; break;
 984         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
 985         case 0x08: p = "AM-L"; break;
 986         case 0x09: p = "NICAM-BG"; break;
 987         case 0x0a: p = "NICAM-DK"; break;
 988         case 0x0b: p = "NICAM-I"; break;
 989         case 0x0c: p = "NICAM-L"; break;
 990         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
 991         case 0x0e: p = "IF FM Radio"; break;
 992         case 0x0f: p = "BTSC"; break;
 993         case 0x10: p = "high-deviation FM"; break;
 994         case 0x11: p = "very high-deviation FM"; break;
 995         case 0xfd: p = "unknown audio standard"; break;
 996         case 0xfe: p = "forced audio standard"; break;
 997         case 0xff: p = "no detected audio standard"; break;
 998         default: p = "not defined";
 999         }
1000         v4l_info(client, "Detected audio standard:   %s\n", p);
1001         v4l_info(client, "Audio muted:               %s\n",
1002                     (state->unmute_volume >= 0) ? "yes" : "no");
1003         v4l_info(client, "Audio microcontroller:     %s\n",
1004                     (download_ctl & 0x10) ?
1005                                 ((mute_ctl & 0x2) ? "detecting" : "running") : "stopped");
1006
1007         switch (audio_config >> 4) {
1008         case 0x00: p = "undefined"; break;
1009         case 0x01: p = "BTSC"; break;
1010         case 0x02: p = "EIAJ"; break;
1011         case 0x03: p = "A2-M"; break;
1012         case 0x04: p = "A2-BG"; break;
1013         case 0x05: p = "A2-DK1"; break;
1014         case 0x06: p = "A2-DK2"; break;
1015         case 0x07: p = "A2-DK3"; break;
1016         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
1017         case 0x09: p = "AM-L"; break;
1018         case 0x0a: p = "NICAM-BG"; break;
1019         case 0x0b: p = "NICAM-DK"; break;
1020         case 0x0c: p = "NICAM-I"; break;
1021         case 0x0d: p = "NICAM-L"; break;
1022         case 0x0e: p = "FM radio"; break;
1023         case 0x0f: p = "automatic detection"; break;
1024         default: p = "undefined";
1025         }
1026         v4l_info(client, "Configured audio standard: %s\n", p);
1027
1028         if ((audio_config >> 4) < 0xF) {
1029                 switch (audio_config & 0xF) {
1030                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
1031                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
1032                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
1033                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
1034                 case 0x04: p = "STEREO"; break;
1035                 case 0x05: p = "DUAL1 (AB)"; break;
1036                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
1037                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
1038                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
1039                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
1040                 case 0x0a: p = "SAP"; break;
1041                 default: p = "undefined";
1042                 }
1043                 v4l_info(client, "Configured audio mode:     %s\n", p);
1044         } else {
1045                 switch (audio_config & 0xF) {
1046                 case 0x00: p = "BG"; break;
1047                 case 0x01: p = "DK1"; break;
1048                 case 0x02: p = "DK2"; break;
1049                 case 0x03: p = "DK3"; break;
1050                 case 0x04: p = "I"; break;
1051                 case 0x05: p = "L"; break;
1052                 case 0x06: p = "BTSC"; break;
1053                 case 0x07: p = "EIAJ"; break;
1054                 case 0x08: p = "A2-M"; break;
1055                 case 0x09: p = "FM Radio"; break;
1056                 case 0x0f: p = "automatic standard and mode detection"; break;
1057                 default: p = "undefined";
1058                 }
1059                 v4l_info(client, "Configured audio system:   %s\n", p);
1060         }
1061
1062         if (aud_input) {
1063                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
1064         } else {
1065                 v4l_info(client, "Specified audio input:     External\n");
1066         }
1067
1068         switch (pref_mode & 0xf) {
1069         case 0: p = "mono/language A"; break;
1070         case 1: p = "language B"; break;
1071         case 2: p = "language C"; break;
1072         case 3: p = "analog fallback"; break;
1073         case 4: p = "stereo"; break;
1074         case 5: p = "language AC"; break;
1075         case 6: p = "language BC"; break;
1076         case 7: p = "language AB"; break;
1077         default: p = "undefined";
1078         }
1079         v4l_info(client, "Preferred audio mode:      %s\n", p);
1080
1081         if ((audio_config & 0xf) == 0xf) {
1082                 switch ((afc0 >> 3) & 0x3) {
1083                 case 0: p = "system DK"; break;
1084                 case 1: p = "system L"; break;
1085                 case 2: p = "autodetect"; break;
1086                 default: p = "undefined";
1087                 }
1088                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
1089
1090                 switch (afc0 & 0x7) {
1091                 case 0: p = "chroma"; break;
1092                 case 1: p = "BTSC"; break;
1093                 case 2: p = "EIAJ"; break;
1094                 case 3: p = "A2-M"; break;
1095                 case 4: p = "autodetect"; break;
1096                 default: p = "undefined";
1097                 }
1098                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
1099         }
1100 }
1101
1102 /* ----------------------------------------------------------------------- */
1103
1104 static int cx25840_init(struct v4l2_subdev *sd, u32 val)
1105 {
1106         struct cx25840_state *state = to_state(sd);
1107         struct i2c_client *client = v4l2_get_subdevdata(sd);
1108
1109         if (!state->is_initialized) {
1110                 /* initialize on first use */
1111                 state->is_initialized = 1;
1112                 if (state->is_cx25836)
1113                         cx25836_initialize(client);
1114                 else if (state->is_cx23885)
1115                         cx23885_initialize(client);
1116                 else
1117                         cx25840_initialize(client);
1118         }
1119         return 0;
1120 }
1121
1122 #ifdef CONFIG_VIDEO_ADV_DEBUG
1123 static int cx25840_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
1124 {
1125         struct i2c_client *client = v4l2_get_subdevdata(sd);
1126
1127         if (!v4l2_chip_match_i2c_client(client, &reg->match))
1128                 return -EINVAL;
1129         if (!capable(CAP_SYS_ADMIN))
1130                 return -EPERM;
1131         reg->size = 1;
1132         reg->val = cx25840_read(client, reg->reg & 0x0fff);
1133         return 0;
1134 }
1135
1136 static int cx25840_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
1137 {
1138         struct i2c_client *client = v4l2_get_subdevdata(sd);
1139
1140         if (!v4l2_chip_match_i2c_client(client, &reg->match))
1141                 return -EINVAL;
1142         if (!capable(CAP_SYS_ADMIN))
1143                 return -EPERM;
1144         cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
1145         return 0;
1146 }
1147 #endif
1148
1149 static int cx25840_decode_vbi_line(struct v4l2_subdev *sd, struct v4l2_decode_vbi_line *vbi)
1150 {
1151         struct i2c_client *client = v4l2_get_subdevdata(sd);
1152
1153         return cx25840_vbi(client, VIDIOC_INT_DECODE_VBI_LINE, vbi);
1154 }
1155
1156 static int cx25840_s_clock_freq(struct v4l2_subdev *sd, u32 freq)
1157 {
1158         struct i2c_client *client = v4l2_get_subdevdata(sd);
1159
1160         return cx25840_audio(client, VIDIOC_INT_AUDIO_CLOCK_FREQ, &freq);
1161 }
1162
1163 static int cx25840_s_stream(struct v4l2_subdev *sd, int enable)
1164 {
1165         struct cx25840_state *state = to_state(sd);
1166         struct i2c_client *client = v4l2_get_subdevdata(sd);
1167
1168         v4l_dbg(1, cx25840_debug, client, "%s output\n",
1169                         enable ? "enable" : "disable");
1170         if (enable) {
1171                 if (state->is_cx23885) {
1172                         u8 v = (cx25840_read(client, 0x421) | 0x0b);
1173                         cx25840_write(client, 0x421, v);
1174                 } else {
1175                         cx25840_write(client, 0x115,
1176                                         state->is_cx25836 ? 0x0c : 0x8c);
1177                         cx25840_write(client, 0x116,
1178                                         state->is_cx25836 ? 0x04 : 0x07);
1179                 }
1180         } else {
1181                 if (state->is_cx23885) {
1182                         u8 v = cx25840_read(client, 0x421) & ~(0x0b);
1183                         cx25840_write(client, 0x421, v);
1184                 } else {
1185                         cx25840_write(client, 0x115, 0x00);
1186                         cx25840_write(client, 0x116, 0x00);
1187                 }
1188         }
1189         return 0;
1190 }
1191
1192 static int cx25840_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
1193 {
1194         struct cx25840_state *state = to_state(sd);
1195
1196         switch (qc->id) {
1197         case V4L2_CID_BRIGHTNESS:
1198         case V4L2_CID_CONTRAST:
1199         case V4L2_CID_SATURATION:
1200         case V4L2_CID_HUE:
1201                 return v4l2_ctrl_query_fill_std(qc);
1202         default:
1203                 break;
1204         }
1205         if (state->is_cx25836)
1206                 return -EINVAL;
1207
1208         switch (qc->id) {
1209         case V4L2_CID_AUDIO_VOLUME:
1210                 return v4l2_ctrl_query_fill(qc, 0, 65535,
1211                                 65535 / 100, state->default_volume);
1212         case V4L2_CID_AUDIO_MUTE:
1213         case V4L2_CID_AUDIO_BALANCE:
1214         case V4L2_CID_AUDIO_BASS:
1215         case V4L2_CID_AUDIO_TREBLE:
1216                 return v4l2_ctrl_query_fill_std(qc);
1217         default:
1218                 return -EINVAL;
1219         }
1220         return -EINVAL;
1221 }
1222
1223 static int cx25840_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
1224 {
1225         struct cx25840_state *state = to_state(sd);
1226         struct i2c_client *client = v4l2_get_subdevdata(sd);
1227
1228         if (state->radio == 0 && state->std == std)
1229                 return 0;
1230         state->radio = 0;
1231         state->std = std;
1232         return set_v4lstd(client);
1233 }
1234
1235 static int cx25840_s_radio(struct v4l2_subdev *sd)
1236 {
1237         struct cx25840_state *state = to_state(sd);
1238
1239         state->radio = 1;
1240         return 0;
1241 }
1242
1243 static int cx25840_s_video_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
1244 {
1245         struct cx25840_state *state = to_state(sd);
1246         struct i2c_client *client = v4l2_get_subdevdata(sd);
1247
1248         return set_input(client, route->input, state->aud_input);
1249 }
1250
1251 static int cx25840_s_audio_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
1252 {
1253         struct cx25840_state *state = to_state(sd);
1254         struct i2c_client *client = v4l2_get_subdevdata(sd);
1255
1256         if (state->is_cx25836)
1257                 return -EINVAL;
1258         return set_input(client, state->vid_input, route->input);
1259 }
1260
1261 static int cx25840_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *freq)
1262 {
1263         struct cx25840_state *state = to_state(sd);
1264         struct i2c_client *client = v4l2_get_subdevdata(sd);
1265
1266         if (!state->is_cx25836)
1267                 input_change(client);
1268         return 0;
1269 }
1270
1271 static int cx25840_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
1272 {
1273         struct cx25840_state *state = to_state(sd);
1274         struct i2c_client *client = v4l2_get_subdevdata(sd);
1275         u8 vpres = cx25840_read(client, 0x40e) & 0x20;
1276         u8 mode;
1277         int val = 0;
1278
1279         if (state->radio)
1280                 return 0;
1281
1282         vt->signal = vpres ? 0xffff : 0x0;
1283         if (state->is_cx25836)
1284                 return 0;
1285
1286         vt->capability |=
1287                 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
1288                 V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
1289
1290         mode = cx25840_read(client, 0x804);
1291
1292         /* get rxsubchans and audmode */
1293         if ((mode & 0xf) == 1)
1294                 val |= V4L2_TUNER_SUB_STEREO;
1295         else
1296                 val |= V4L2_TUNER_SUB_MONO;
1297
1298         if (mode == 2 || mode == 4)
1299                 val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1300
1301         if (mode & 0x10)
1302                 val |= V4L2_TUNER_SUB_SAP;
1303
1304         vt->rxsubchans = val;
1305         vt->audmode = state->audmode;
1306         return 0;
1307 }
1308
1309 static int cx25840_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
1310 {
1311         struct cx25840_state *state = to_state(sd);
1312         struct i2c_client *client = v4l2_get_subdevdata(sd);
1313
1314         if (state->radio || state->is_cx25836)
1315                 return 0;
1316
1317         switch (vt->audmode) {
1318                 case V4L2_TUNER_MODE_MONO:
1319                         /* mono      -> mono
1320                            stereo    -> mono
1321                            bilingual -> lang1 */
1322                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
1323                         break;
1324                 case V4L2_TUNER_MODE_STEREO:
1325                 case V4L2_TUNER_MODE_LANG1:
1326                         /* mono      -> mono
1327                            stereo    -> stereo
1328                            bilingual -> lang1 */
1329                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
1330                         break;
1331                 case V4L2_TUNER_MODE_LANG1_LANG2:
1332                         /* mono      -> mono
1333                            stereo    -> stereo
1334                            bilingual -> lang1/lang2 */
1335                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
1336                         break;
1337                 case V4L2_TUNER_MODE_LANG2:
1338                         /* mono      -> mono
1339                            stereo    -> stereo
1340                            bilingual -> lang2 */
1341                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
1342                         break;
1343                 default:
1344                         return -EINVAL;
1345         }
1346         state->audmode = vt->audmode;
1347         return 0;
1348 }
1349
1350 static int cx25840_reset(struct v4l2_subdev *sd, u32 val)
1351 {
1352         struct cx25840_state *state = to_state(sd);
1353         struct i2c_client *client = v4l2_get_subdevdata(sd);
1354
1355         if (state->is_cx25836)
1356                 cx25836_initialize(client);
1357         else if (state->is_cx23885)
1358                 cx23885_initialize(client);
1359         else
1360                 cx25840_initialize(client);
1361         return 0;
1362 }
1363
1364 static int cx25840_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
1365 {
1366         struct cx25840_state *state = to_state(sd);
1367         struct i2c_client *client = v4l2_get_subdevdata(sd);
1368
1369         return v4l2_chip_ident_i2c_client(client, chip, state->id, state->rev);
1370 }
1371
1372 static int cx25840_log_status(struct v4l2_subdev *sd)
1373 {
1374         struct cx25840_state *state = to_state(sd);
1375         struct i2c_client *client = v4l2_get_subdevdata(sd);
1376
1377         log_video_status(client);
1378         if (!state->is_cx25836)
1379                 log_audio_status(client);
1380         return 0;
1381 }
1382
1383 static int cx25840_command(struct i2c_client *client, unsigned cmd, void *arg)
1384 {
1385         return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
1386 }
1387
1388 /* ----------------------------------------------------------------------- */
1389
1390 static const struct v4l2_subdev_core_ops cx25840_core_ops = {
1391         .log_status = cx25840_log_status,
1392         .g_chip_ident = cx25840_g_chip_ident,
1393         .g_ctrl = cx25840_g_ctrl,
1394         .s_ctrl = cx25840_s_ctrl,
1395         .queryctrl = cx25840_queryctrl,
1396         .reset = cx25840_reset,
1397         .init = cx25840_init,
1398 #ifdef CONFIG_VIDEO_ADV_DEBUG
1399         .g_register = cx25840_g_register,
1400         .s_register = cx25840_s_register,
1401 #endif
1402 };
1403
1404 static const struct v4l2_subdev_tuner_ops cx25840_tuner_ops = {
1405         .s_frequency = cx25840_s_frequency,
1406         .s_std = cx25840_s_std,
1407         .s_radio = cx25840_s_radio,
1408         .g_tuner = cx25840_g_tuner,
1409         .s_tuner = cx25840_s_tuner,
1410 };
1411
1412 static const struct v4l2_subdev_audio_ops cx25840_audio_ops = {
1413         .s_clock_freq = cx25840_s_clock_freq,
1414         .s_routing = cx25840_s_audio_routing,
1415 };
1416
1417 static const struct v4l2_subdev_video_ops cx25840_video_ops = {
1418         .s_routing = cx25840_s_video_routing,
1419         .g_fmt = cx25840_g_fmt,
1420         .s_fmt = cx25840_s_fmt,
1421         .decode_vbi_line = cx25840_decode_vbi_line,
1422         .s_stream = cx25840_s_stream,
1423 };
1424
1425 static const struct v4l2_subdev_ops cx25840_ops = {
1426         .core = &cx25840_core_ops,
1427         .tuner = &cx25840_tuner_ops,
1428         .audio = &cx25840_audio_ops,
1429         .video = &cx25840_video_ops,
1430 };
1431
1432 /* ----------------------------------------------------------------------- */
1433
1434 static int cx25840_probe(struct i2c_client *client,
1435                          const struct i2c_device_id *did)
1436 {
1437         struct cx25840_state *state;
1438         struct v4l2_subdev *sd;
1439         u32 id;
1440         u16 device_id;
1441
1442         /* Check if the adapter supports the needed features */
1443         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1444                 return -EIO;
1445
1446         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", client->addr << 1);
1447
1448         device_id = cx25840_read(client, 0x101) << 8;
1449         device_id |= cx25840_read(client, 0x100);
1450         v4l_dbg(1, cx25840_debug, client, "device_id = 0x%04x\n", device_id);
1451
1452         /* The high byte of the device ID should be
1453          * 0x83 for the cx2583x and 0x84 for the cx2584x */
1454         if ((device_id & 0xff00) == 0x8300) {
1455                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1456         }
1457         else if ((device_id & 0xff00) == 0x8400) {
1458                 id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
1459         } else if (device_id == 0x0000) {
1460                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1461         } else if (device_id == 0x1313) {
1462                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1463         }
1464         else {
1465                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
1466                 return -ENODEV;
1467         }
1468
1469         state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
1470         if (state == NULL)
1471                 return -ENOMEM;
1472
1473         sd = &state->sd;
1474         v4l2_i2c_subdev_init(sd, client, &cx25840_ops);
1475         /* Note: revision '(device_id & 0x0f) == 2' was never built. The
1476            marking skips from 0x1 == 22 to 0x3 == 23. */
1477         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
1478                     (device_id & 0xfff0) >> 4,
1479                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : (device_id & 0x0f),
1480                     client->addr << 1, client->adapter->name);
1481
1482         state->c = client;
1483         state->is_cx25836 = ((device_id & 0xff00) == 0x8300);
1484         state->is_cx23885 = (device_id == 0x0000) || (device_id == 0x1313);
1485         state->vid_input = CX25840_COMPOSITE7;
1486         state->aud_input = CX25840_AUDIO8;
1487         state->audclk_freq = 48000;
1488         state->pvr150_workaround = 0;
1489         state->audmode = V4L2_TUNER_MODE_LANG1;
1490         state->unmute_volume = -1;
1491         state->default_volume = 228 - cx25840_read(client, 0x8d4);
1492         state->default_volume = ((state->default_volume / 2) + 23) << 9;
1493         state->vbi_line_offset = 8;
1494         state->id = id;
1495         state->rev = device_id;
1496
1497         if (state->is_cx23885) {
1498                 /* Drive GPIO2 direction and values */
1499                 cx25840_write(client, 0x160, 0x1d);
1500                 cx25840_write(client, 0x164, 0x00);
1501         }
1502
1503         return 0;
1504 }
1505
1506 static int cx25840_remove(struct i2c_client *client)
1507 {
1508         struct v4l2_subdev *sd = i2c_get_clientdata(client);
1509
1510         v4l2_device_unregister_subdev(sd);
1511         kfree(to_state(sd));
1512         return 0;
1513 }
1514
1515 static const struct i2c_device_id cx25840_id[] = {
1516         { "cx25840", 0 },
1517         { }
1518 };
1519 MODULE_DEVICE_TABLE(i2c, cx25840_id);
1520
1521 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
1522         .name = "cx25840",
1523         .driverid = I2C_DRIVERID_CX25840,
1524         .command = cx25840_command,
1525         .probe = cx25840_probe,
1526         .remove = cx25840_remove,
1527         .id_table = cx25840_id,
1528 };