git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/saa711x.c

   1 /*
   2  * saa711x - Philips SAA711x video decoder driver version 0.0.1
   3  *
   4  * To do: Now, it handles only saa7113/7114. Should be improved to
   5  * handle all Philips saa711x devices.
   6  *
   7  * Based on saa7113 driver from Dave Perks <dperks@ibm.net>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/init.h>
  26 #include <linux/delay.h>
  27 #include <linux/errno.h>
  28 #include <linux/fs.h>
  29 #include <linux/kernel.h>
  30 #include <linux/major.h>
  31 #include <linux/slab.h>
  32 #include <linux/mm.h>
  33 #include <linux/pci.h>
  34 #include <linux/signal.h>
  35 #include <asm/io.h>
  36 #include <asm/pgtable.h>
  37 #include <asm/page.h>
  38 #include <linux/sched.h>
  39 #include <asm/segment.h>
  40 #include <linux/types.h>
  41 #include <asm/uaccess.h>
  42 #include <linux/videodev.h>
  43
  44 MODULE_DESCRIPTION("Philips SAA711x video decoder driver");
  45 MODULE_AUTHOR("Dave Perks, Jose Ignacio Gijon, Joerg Heckenbach, Mark McClelland, Dwaine Garden");
  46 MODULE_LICENSE("GPL");
  47
  48 #include <linux/i2c.h>
  49 #include <linux/i2c-dev.h>
  50
  51 #define I2C_NAME(s) (s)->name
  52
  53 #include <linux/video_decoder.h>
  54
  55 static int debug = 0;
  56 MODULE_PARM(debug, "i");
  57 MODULE_PARM_DESC(debug, " Set the default Debug level.  Default: 0 (Off) - (0-1)");
  58
  59
  60 #define dprintk(num, format, args...) \
  61         do { \
  62                 if (debug >= num) \
  63                         printk(format , ##args); \
  64         } while (0)
  65
  66 /* ----------------------------------------------------------------------- */
  67
  68 struct saa711x {
  69         unsigned char reg[32];
  70
  71         int norm;
  72         int input;
  73         int enable;
  74         int bright;
  75         int contrast;
  76         int hue;
  77         int sat;
  78 };
  79
  80 #define   I2C_SAA7113        0x4A
  81 #define   I2C_SAA7114        0x42
  82
  83 /* ----------------------------------------------------------------------- */
  84
  85 static inline int
  86 saa711x_write (struct i2c_client *client,
  87                u8                 reg,
  88                u8                 value)
  89 {
  90         struct saa711x *decoder = i2c_get_clientdata(client);
  91
  92         decoder->reg[reg] = value;
  93         return i2c_smbus_write_byte_data(client, reg, value);
  94 }
  95
  96 static int
  97 saa711x_write_block (struct i2c_client *client,
  98                      const u8          *data,
  99                      unsigned int       len)
 100 {
 101         int ret = -1;
 102         u8 reg;
 103
 104         /* the saa711x has an autoincrement function, use it if
 105          * the adapter understands raw I2C */
 106         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
 107                 /* do raw I2C, not smbus compatible */
 108                 struct saa711x *decoder = i2c_get_clientdata(client);
 109                 struct i2c_msg msg;
 110                 u8 block_data[32];
 111
 112                 msg.addr = client->addr;
 113                 msg.flags = 0;
 114                 while (len >= 2) {
 115                         msg.buf = (char *) block_data;
 116                         msg.len = 0;
 117                         block_data[msg.len++] = reg = data[0];
 118                         do {
 119                                 block_data[msg.len++] =
 120                                     decoder->reg[reg++] = data[1];
 121                                 len -= 2;
 122                                 data += 2;
 123                         } while (len >= 2 && data[0] == reg &&
 124                                  msg.len < 32);
 125                         if ((ret = i2c_transfer(client->adapter,
 126                                                 &msg, 1)) < 0)
 127                                 break;
 128                 }
 129         } else {
 130                 /* do some slow I2C emulation kind of thing */
 131                 while (len >= 2) {
 132                         reg = *data++;
 133                         if ((ret = saa711x_write(client, reg,
 134                                                  *data++)) < 0)
 135                                 break;
 136                         len -= 2;
 137                 }
 138         }
 139
 140         return ret;
 141 }
 142
 143 static int
 144 saa711x_init_decoder (struct i2c_client *client,
 145               struct video_decoder_init *init)
 146 {
 147         return saa711x_write_block(client, init->data, init->len);
 148 }
 149
 150 static inline int
 151 saa711x_read (struct i2c_client *client,
 152               u8                 reg)
 153 {
 154         return i2c_smbus_read_byte_data(client, reg);
 155 }
 156
 157 /* ----------------------------------------------------------------------- */
 158
 159 static const unsigned char saa711x_i2c_init[] = {
 160         0x00, 0x00,     /* PH711x_CHIP_VERSION 00 - ID byte */
 161         0x01, 0x08,     /* PH711x_INCREMENT_DELAY - (1) (1) (1) (1) IDEL3 IDEL2 IDELL1 IDEL0 */
 162         0x02, 0xc0,     /* PH711x_ANALOG_INPUT_CONTR_1 - FUSE1 FUSE0 GUDL1 GUDL0 MODE3 MODE2 MODE1 MODE0 */
 163         0x03, 0x23,     /* PH711x_ANALOG_INPUT_CONTR_2 - (1) HLNRS VBSL WPOFF HOLDG GAFIX GAI28 GAI18 */
 164         0x04, 0x00,     /* PH711x_ANALOG_INPUT_CONTR_3 - GAI17 GAI16 GAI15 GAI14 GAI13 GAI12 GAI11 GAI10 */
 165         0x05, 0x00,     /* PH711x_ANALOG_INPUT_CONTR_4 - GAI27 GAI26 GAI25 GAI24 GAI23 GAI22 GAI21 GAI20 */
 166         0x06, 0xeb,     /* PH711x_HORIZONTAL_SYNC_START - HSB7 HSB6 HSB5 HSB4 HSB3 HSB2 HSB1 HSB0 */
 167         0x07, 0xe0,     /* PH711x_HORIZONTAL_SYNC_STOP - HSS7 HSS6 HSS5 HSS4 HSS3 HSS2 HSS1 HSS0 */
 168         0x08, 0x88,     /* PH711x_SYNC_CONTROL - AUFD FSEL FOET HTC1 HTC0 HPLL VNOI1 VNOI0 */
 169         0x09, 0x00,     /* PH711x_LUMINANCE_CONTROL - BYPS PREF BPSS1 BPSS0 VBLB UPTCV APER1 APER0 */
 170         0x0a, 0x80,     /* PH711x_LUMINANCE_BRIGHTNESS - BRIG7 BRIG6 BRIG5 BRIG4 BRIG3 BRIG2 BRIG1 BRIG0 */
 171         0x0b, 0x47,     /* PH711x_LUMINANCE_CONTRAST - CONT7 CONT6 CONT5 CONT4 CONT3 CONT2 CONT1 CONT0 */
 172         0x0c, 0x40,     /* PH711x_CHROMA_SATURATION - SATN7 SATN6 SATN5 SATN4 SATN3 SATN2 SATN1 SATN0 */
 173         0x0d, 0x00,     /* PH711x_CHROMA_HUE_CONTROL - HUEC7 HUEC6 HUEC5 HUEC4 HUEC3 HUEC2 HUEC1 HUEC0 */
 174         0x0e, 0x01,     /* PH711x_CHROMA_CONTROL - CDTO CSTD2 CSTD1 CSTD0 DCCF FCTC CHBW1 CHBW0 */
 175         0x0f, 0xaa,     /* PH711x_CHROMA_GAIN_CONTROL - ACGC CGAIN6 CGAIN5 CGAIN4 CGAIN3 CGAIN2 CGAIN1 CGAIN0 */
 176         0x10, 0x00,     /* PH711x_FORMAT_DELAY_CONTROL - OFTS1 OFTS0 HDEL1 HDEL0 VRLN YDEL2 YDEL1 YDEL0 */
 177         0x11, 0x1C,     /* PH711x_OUTPUT_CONTROL_1 - GPSW1 CM99 GPSW0 HLSEL OEYC OERT VIPB COLO */
 178         0x12, 0x01,     /* PH711x_OUTPUT_CONTROL_2 - RTSE13 RTSE12 RTSE11 RTSE10 RTSE03 RTSE02 RTSE01 RTSE00 */
 179         0x13, 0x00,     /* PH711x_OUTPUT_CONTROL_3 - ADLSB (1) (1) OLDSB FIDP (1) AOSL1 AOSL0 */
 180         0x14, 0x00,     /* RESERVED 14 - (1) (1) (1) (1) (1) (1) (1) (1) */
 181         0x15, 0x00,     /* PH711x_V_GATE1_START - VSTA7 VSTA6 VSTA5 VSTA4 VSTA3 VSTA2 VSTA1 VSTA0 */
 182         0x16, 0x00,     /* PH711x_V_GATE1_STOP - VSTO7 VSTO6 VSTO5 VSTO4 VSTO3 VSTO2 VSTO1 VSTO0 */
 183         0x17, 0x00,     /* PH711x_V_GATE1_MSB - (1) (1) (1) (1) (1) (1) VSTO8 VSTA8 */
 184 };
 185
 186 static int
 187 saa711x_command (struct i2c_client *client,
 188                  unsigned int       cmd,
 189                  void              *arg)
 190 {
 191         struct saa711x *decoder = i2c_get_clientdata(client);
 192
 193         switch (cmd) {
 194
 195         case 0:
 196         case DECODER_INIT:
 197         {
 198                 struct video_decoder_init *init = arg;
 199                 if (NULL != init)
 200                         return saa711x_init_decoder(client, init);
 201                 else {
 202                         struct video_decoder_init vdi;
 203                         vdi.data = saa711x_i2c_init;
 204                         vdi.len = sizeof(saa711x_i2c_init);
 205                         return saa711x_init_decoder(client, &vdi);
 206                 }
 207         }
 208
 209         case DECODER_DUMP:
 210         {
 211                 int i;
 212
 213                 for (i = 0; i < 32; i += 16) {
 214                         int j;
 215
 216                         printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i);
 217                         for (j = 0; j < 16; ++j) {
 218                                 printk(" %02x",
 219                                        saa711x_read(client, i + j));
 220                         }
 221                         printk("\n");
 222                 }
 223         }
 224                 break;
 225
 226         case DECODER_GET_CAPABILITIES:
 227         {
 228                 struct video_decoder_capability *cap = arg;
 229
 230                 cap->flags = VIDEO_DECODER_PAL |
 231                              VIDEO_DECODER_NTSC |
 232                              VIDEO_DECODER_SECAM |
 233                              VIDEO_DECODER_AUTO |
 234                              VIDEO_DECODER_CCIR;
 235                 cap->inputs = 8;
 236                 cap->outputs = 1;
 237         }
 238                 break;
 239
 240         case DECODER_GET_STATUS:
 241         {
 242                 int *iarg = arg;
 243                 int status;
 244                 int res;
 245
 246                 status = saa711x_read(client, 0x1f);
 247                 dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client),
 248                         status);
 249                 res = 0;
 250                 if ((status & (1 << 6)) == 0) {
 251                         res |= DECODER_STATUS_GOOD;
 252                 }
 253                 switch (decoder->norm) {
 254                 case VIDEO_MODE_NTSC:
 255                         res |= DECODER_STATUS_NTSC;
 256                         break;
 257                 case VIDEO_MODE_PAL:
 258                         res |= DECODER_STATUS_PAL;
 259                         break;
 260                 case VIDEO_MODE_SECAM:
 261                         res |= DECODER_STATUS_SECAM;
 262                         break;
 263                 default:
 264                 case VIDEO_MODE_AUTO:
 265                         if ((status & (1 << 5)) != 0) {
 266                                 res |= DECODER_STATUS_NTSC;
 267                         } else {
 268                                 res |= DECODER_STATUS_PAL;
 269                         }
 270                         break;
 271                 }
 272                 if ((status & (1 << 0)) != 0) {
 273                         res |= DECODER_STATUS_COLOR;
 274                 }
 275                 *iarg = res;
 276         }
 277                 break;
 278
 279         case DECODER_SET_GPIO:
 280         {
 281                 int *iarg = arg;
 282                 if (0 != *iarg) {
 283                         saa711x_write(client, 0x11,
 284                                 (decoder->reg[0x11] | 0x80));
 285                 } else {
 286                         saa711x_write(client, 0x11,
 287                                 (decoder->reg[0x11] & 0x7f));
 288                 }
 289                 break;
 290         }
 291
 292         case DECODER_SET_VBI_BYPASS:
 293         {
 294                 int *iarg = arg;
 295                 if (0 != *iarg) {
 296                         saa711x_write(client, 0x13,
 297                                 (decoder->reg[0x13] & 0xf0) | 0x0a);
 298                 } else {
 299                         saa711x_write(client, 0x13,
 300                                 (decoder->reg[0x13] & 0xf0));
 301                 }
 302                 break;
 303         }
 304
 305         case DECODER_SET_NORM:
 306         {
 307                 int *iarg = arg;
 308
 309                 switch (*iarg) {
 310
 311                 case VIDEO_MODE_NTSC:
 312                         saa711x_write(client, 0x08,
 313                                       (decoder->reg[0x08] & 0x3f) | 0x40);
 314                         saa711x_write(client, 0x0e,
 315                                       (decoder->reg[0x0e] & 0x8f));
 316                         break;
 317
 318                 case VIDEO_MODE_PAL:
 319                         saa711x_write(client, 0x08,
 320                                       (decoder->reg[0x08] & 0x3f) | 0x00);
 321                         saa711x_write(client, 0x0e,
 322                                       (decoder->reg[0x0e] & 0x8f));
 323                         break;
 324
 325                 case VIDEO_MODE_SECAM:
 326                         saa711x_write(client, 0x08,
 327                                       (decoder->reg[0x0e] & 0x3f) | 0x00);
 328                         saa711x_write(client, 0x0e,
 329                                       (decoder->reg[0x0e] & 0x8f) | 0x50);
 330                         break;
 331
 332                 case VIDEO_MODE_AUTO:
 333                         saa711x_write(client, 0x08,
 334                                       (decoder->reg[0x08] & 0x3f) | 0x80);
 335                         saa711x_write(client, 0x0e,
 336                                       (decoder->reg[0x0e] & 0x8f));
 337                         break;
 338
 339                 default:
 340                         return -EINVAL;
 341
 342                 }
 343                 decoder->norm = *iarg;
 344         }
 345                 break;
 346
 347         case DECODER_SET_INPUT:
 348         {
 349                 int *iarg = arg;
 350                 if (*iarg < 0 || *iarg > 9) {
 351                         return -EINVAL;
 352                 }
 353                 if (decoder->input != *iarg) {
 354                         decoder->input = *iarg;
 355                         /* select mode */
 356                         saa711x_write(client, 0x02,
 357                                       (decoder->reg[0x02] & 0xf0) | decoder->input);
 358                         /* bypass chrominance trap for modes 4..7 */
 359                         saa711x_write(client, 0x09,
 360                                       (decoder->reg[0x09] & 0x7f) | ((decoder->input > 3) ? 0x80 : 0));
 361                 }
 362         }
 363                 break;
 364
 365         case DECODER_SET_OUTPUT:
 366         {
 367                 int *iarg = arg;
 368
 369                 /* not much choice of outputs */
 370                 if (*iarg != 0) {
 371                         return -EINVAL;
 372                 }
 373         }
 374                 break;
 375
 376         case DECODER_ENABLE_OUTPUT:
 377         {
 378                 int *iarg = arg;
 379                 int enable = (*iarg != 0);
 380
 381                 if (decoder->enable != enable) {
 382                         decoder->enable = enable;
 383
 384                         /* RJ: If output should be disabled (for
 385                          * playing videos), we also need a open PLL.
 386                          * The input is set to 0 (where no input
 387                          * source is connected), although this
 388                          * is not necessary.
 389                          *
 390                          * If output should be enabled, we have to
 391                          * reverse the above.
 392                          */
 393
 394                         if (decoder->enable) {
 395                                 saa711x_write(client, 0x02,
 396                                               (decoder->
 397                                                reg[0x02] & 0xf8) |
 398                                               decoder->input);
 399                                 saa711x_write(client, 0x08,
 400                                               (decoder->reg[0x08] & 0xfb));
 401                                 saa711x_write(client, 0x11,
 402                                               (decoder->
 403                                                reg[0x11] & 0xf3) | 0x0c);
 404                         } else {
 405                                 saa711x_write(client, 0x02,
 406                                               (decoder->reg[0x02] & 0xf8));
 407                                 saa711x_write(client, 0x08,
 408                                               (decoder->
 409                                                reg[0x08] & 0xfb) | 0x04);
 410                                 saa711x_write(client, 0x11,
 411                                               (decoder->reg[0x11] & 0xf3));
 412                         }
 413                 }
 414         }
 415                 break;
 416
 417         case DECODER_SET_PICTURE:
 418         {
 419                 struct video_picture *pic = arg;
 420
 421                 if (decoder->bright != pic->brightness) {
 422                         /* We want 0 to 255 we get 0-65535 */
 423                         decoder->bright = pic->brightness;
 424                         saa711x_write(client, 0x0a, decoder->bright >> 8);
 425                 }
 426                 if (decoder->contrast != pic->contrast) {
 427                         /* We want 0 to 127 we get 0-65535 */
 428                         decoder->contrast = pic->contrast;
 429                         saa711x_write(client, 0x0b,
 430                                       decoder->contrast >> 9);
 431                 }
 432                 if (decoder->sat != pic->colour) {
 433                         /* We want 0 to 127 we get 0-65535 */
 434                         decoder->sat = pic->colour;
 435                         saa711x_write(client, 0x0c, decoder->sat >> 9);
 436                 }
 437                 if (decoder->hue != pic->hue) {
 438                         /* We want -128 to 127 we get 0-65535 */
 439                         decoder->hue = pic->hue;
 440                         saa711x_write(client, 0x0d,
 441                                       (decoder->hue - 32768) >> 8);
 442                 }
 443         }
 444                 break;
 445
 446         default:
 447                 return -EINVAL;
 448         }
 449
 450         return 0;
 451 }
 452
 453 /* ----------------------------------------------------------------------- */
 454
 455 /*
 456  * Generic i2c probe
 457  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 458  */
 459
 460 /* standard i2c insmod options */
 461 static unsigned short normal_i2c[] = {
 462         I2C_SAA7113>>1,         /* saa7113 */
 463         I2C_SAA7114>>1,         /* saa7114 */
 464         I2C_CLIENT_END
 465 };
 466
 467 I2C_CLIENT_INSMOD;
 468
 469
 470 static struct i2c_driver i2c_driver_saa711x;
 471
 472 static int
 473 saa711x_detect_client (struct i2c_adapter *adapter,
 474                        int                 address,
 475                        int                 kind)
 476 {
 477         int i;
 478         struct i2c_client *client;
 479         struct saa711x *decoder;
 480         struct video_decoder_init vdi;
 481
 482         dprintk(1,
 483                 KERN_INFO
 484                 "saa711x.c: detecting saa711x client on address 0x%x\n",
 485                 address << 1);
 486
 487         /* Check if the adapter supports the needed features */
 488         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 489                 return 0;
 490
 491         client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
 492         if (client == 0)
 493                 return -ENOMEM;
 494         memset(client, 0, sizeof(struct i2c_client));
 495         client->addr = address;
 496         client->adapter = adapter;
 497         client->driver = &i2c_driver_saa711x;
 498         client->flags = I2C_CLIENT_ALLOW_USE;
 499         strlcpy(I2C_NAME(client), "saa711x", sizeof(I2C_NAME(client)));
 500         decoder = kmalloc(sizeof(struct saa711x), GFP_KERNEL);
 501         if (decoder == NULL) {
 502                 kfree(client);
 503                 return -ENOMEM;
 504         }
 505         memset(decoder, 0, sizeof(struct saa711x));
 506         decoder->norm = VIDEO_MODE_NTSC;
 507         decoder->input = 0;
 508         decoder->enable = 1;
 509         decoder->bright = 32768;
 510         decoder->contrast = 32768;
 511         decoder->hue = 32768;
 512         decoder->sat = 32768;
 513         i2c_set_clientdata(client, decoder);
 514
 515         i = i2c_attach_client(client);
 516         if (i) {
 517                 kfree(client);
 518                 kfree(decoder);
 519                 return i;
 520         }
 521
 522         vdi.data = saa711x_i2c_init;
 523         vdi.len = sizeof(saa711x_i2c_init);
 524         i = saa711x_init_decoder(client, &vdi);
 525         if (i < 0) {
 526                 dprintk(1, KERN_ERR "%s_attach error: init status %d\n",
 527                         I2C_NAME(client), i);
 528         } else {
 529                 dprintk(1,
 530                         KERN_INFO
 531                         "%s_attach: chip version %x at address 0x%x\n",
 532                         I2C_NAME(client), saa711x_read(client, 0x00) >> 4,
 533                         client->addr << 1);
 534         }
 535
 536         return 0;
 537 }
 538
 539 static int
 540 saa711x_attach_adapter (struct i2c_adapter *adapter)
 541 {
 542         dprintk(1,
 543                 KERN_INFO
 544                 "saa711x.c: starting probe for adapter %s (0x%x)\n",
 545                 I2C_NAME(adapter), adapter->id);
 546         return i2c_probe(adapter, &addr_data, &saa711x_detect_client);
 547 }
 548
 549 static int
 550 saa711x_detach_client (struct i2c_client *client)
 551 {
 552         struct saa711x *decoder = i2c_get_clientdata(client);
 553         int err;
 554
 555         err = i2c_detach_client(client);
 556         if (err) {
 557                 return err;
 558         }
 559
 560         kfree(decoder);
 561         kfree(client);
 562
 563         return 0;
 564 }
 565
 566 /* ----------------------------------------------------------------------- */
 567
 568 static struct i2c_driver i2c_driver_saa711x = {
 569         .owner = THIS_MODULE,
 570         .name = "saa711x",
 571
 572         .id = I2C_DRIVERID_SAA711X,
 573         .flags = I2C_DF_NOTIFY,
 574
 575         .attach_adapter = saa711x_attach_adapter,
 576         .detach_client = saa711x_detach_client,
 577         .command = saa711x_command,
 578 };
 579
 580 static int __init
 581 saa711x_init (void)
 582 {
 583         return i2c_add_driver(&i2c_driver_saa711x);
 584 }
 585
 586 static void __exit
 587 saa711x_exit (void)
 588 {
 589         i2c_del_driver(&i2c_driver_saa711x);
 590 }
 591
 592 module_init(saa711x_init);
 593 module_exit(saa711x_exit);