drivers/media/video/saa711x.c

   1 /*
   2  * saa7111 - Philips SAA7113A video decoder driver version 0.0.3
   3  *
   4  * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
   5  *
   6  * Slight changes for video timing and attachment output by
   7  * Wolfgang Scherr <scherr@net4you.net>
   8  *
   9  * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
  10  *    - moved over to linux>=2.4.x i2c protocol (1/1/2003)
  11  *
  12  * Changes by Michael Hunold <michael@mihu.de>
  13  *    - implemented DECODER_SET_GPIO, DECODER_INIT, DECODER_SET_VBI_BYPASS
  14  *
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  28  */
  29
  30 #include <linux/module.h>
  31 #include <linux/init.h>
  32 #include <linux/delay.h>
  33 #include <linux/errno.h>
  34 #include <linux/fs.h>
  35 #include <linux/kernel.h>
  36 #include <linux/major.h>
  37 #include <linux/slab.h>
  38 #include <linux/mm.h>
  39 #include <linux/pci.h>
  40 #include <linux/signal.h>
  41 #include <asm/io.h>
  42 #include <asm/pgtable.h>
  43 #include <asm/page.h>
  44 #include <linux/sched.h>
  45 #include <asm/segment.h>
  46 #include <linux/types.h>
  47 #include <asm/uaccess.h>
  48 #include <linux/videodev.h>
  49
  50 MODULE_DESCRIPTION("Philips SAA7113 video decoder driver");
  51 MODULE_AUTHOR("Dave Perks, Jose Ignacio Gijon, Joerg Heckenbach, Mark McClelland, Dwaine Garden");
  52 MODULE_LICENSE("GPL");
  53
  54 #include <linux/i2c.h>
  55 #include <linux/i2c-dev.h>
  56
  57 #define I2C_NAME(s) (s)->name
  58
  59 #include <linux/video_decoder.h>
  60
  61 static int debug = 0;
  62 MODULE_PARM(debug, "i");
  63 MODULE_PARM_DESC(debug, " Set the default Debug level.  Default: 0 (Off) - (0-1)");
  64
  65
  66 #define dprintk(num, format, args...) \
  67         do { \
  68                 if (debug >= num) \
  69                         printk(format , ##args); \
  70         } while (0)
  71
  72 /* ----------------------------------------------------------------------- */
  73
  74 struct saa7113 {
  75         unsigned char reg[32];
  76
  77         int norm;
  78         int input;
  79         int enable;
  80         int bright;
  81         int contrast;
  82         int hue;
  83         int sat;
  84 };
  85
  86 #define   I2C_SAA7113        0x4A
  87 #define   I2C_SAA7114        0x42
  88
  89 /* ----------------------------------------------------------------------- */
  90
  91 static inline int
  92 saa7113_write (struct i2c_client *client,
  93                u8                 reg,
  94                u8                 value)
  95 {
  96         struct saa7113 *decoder = i2c_get_clientdata(client);
  97
  98         decoder->reg[reg] = value;
  99         return i2c_smbus_write_byte_data(client, reg, value);
 100 }
 101
 102 static int
 103 saa7113_write_block (struct i2c_client *client,
 104                      const u8          *data,
 105                      unsigned int       len)
 106 {
 107         int ret = -1;
 108         u8 reg;
 109
 110         /* the saa7113 has an autoincrement function, use it if
 111          * the adapter understands raw I2C */
 112         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
 113                 /* do raw I2C, not smbus compatible */
 114                 struct saa7113 *decoder = i2c_get_clientdata(client);
 115                 struct i2c_msg msg;
 116                 u8 block_data[32];
 117
 118                 msg.addr = client->addr;
 119                 msg.flags = 0;
 120                 while (len >= 2) {
 121                         msg.buf = (char *) block_data;
 122                         msg.len = 0;
 123                         block_data[msg.len++] = reg = data[0];
 124                         do {
 125                                 block_data[msg.len++] =
 126                                     decoder->reg[reg++] = data[1];
 127                                 len -= 2;
 128                                 data += 2;
 129                         } while (len >= 2 && data[0] == reg &&
 130                                  msg.len < 32);
 131                         if ((ret = i2c_transfer(client->adapter,
 132                                                 &msg, 1)) < 0)
 133                                 break;
 134                 }
 135         } else {
 136                 /* do some slow I2C emulation kind of thing */
 137                 while (len >= 2) {
 138                         reg = *data++;
 139                         if ((ret = saa7113_write(client, reg,
 140                                                  *data++)) < 0)
 141                                 break;
 142                         len -= 2;
 143                 }
 144         }
 145
 146         return ret;
 147 }
 148
 149 static int
 150 saa7113_init_decoder (struct i2c_client *client,
 151               struct video_decoder_init *init)
 152 {
 153         return saa7113_write_block(client, init->data, init->len);
 154 }
 155
 156 static inline int
 157 saa7113_read (struct i2c_client *client,
 158               u8                 reg)
 159 {
 160         return i2c_smbus_read_byte_data(client, reg);
 161 }
 162
 163 /* ----------------------------------------------------------------------- */
 164
 165 static const unsigned char saa7113_i2c_init[] = {
 166         0x00, 0x00,     /* PH7113_CHIP_VERSION 00 - ID byte */
 167         0x01, 0x08,     /* PH7113_INCREMENT_DELAY - (1) (1) (1) (1) IDEL3 IDEL2 IDELL1 IDEL0 */
 168         0x02, 0xc0,     /* PH7113_ANALOG_INPUT_CONTR_1 - FUSE1 FUSE0 GUDL1 GUDL0 MODE3 MODE2 MODE1 MODE0 */
 169         0x03, 0x23,     /* PH7113_ANALOG_INPUT_CONTR_2 - (1) HLNRS VBSL WPOFF HOLDG GAFIX GAI28 GAI18 */
 170         0x04, 0x00,     /* PH7113_ANALOG_INPUT_CONTR_3 - GAI17 GAI16 GAI15 GAI14 GAI13 GAI12 GAI11 GAI10 */
 171         0x05, 0x00,     /* PH7113_ANALOG_INPUT_CONTR_4 - GAI27 GAI26 GAI25 GAI24 GAI23 GAI22 GAI21 GAI20 */
 172         0x06, 0xeb,     /* PH7113_HORIZONTAL_SYNC_START - HSB7 HSB6 HSB5 HSB4 HSB3 HSB2 HSB1 HSB0 */
 173         0x07, 0xe0,     /* PH7113_HORIZONTAL_SYNC_STOP - HSS7 HSS6 HSS5 HSS4 HSS3 HSS2 HSS1 HSS0 */
 174         0x08, 0x88,     /* PH7113_SYNC_CONTROL - AUFD FSEL FOET HTC1 HTC0 HPLL VNOI1 VNOI0 */
 175         0x09, 0x00,     /* PH7113_LUMINANCE_CONTROL - BYPS PREF BPSS1 BPSS0 VBLB UPTCV APER1 APER0 */
 176         0x0a, 0x80,     /* PH7113_LUMINANCE_BRIGHTNESS - BRIG7 BRIG6 BRIG5 BRIG4 BRIG3 BRIG2 BRIG1 BRIG0 */
 177         0x0b, 0x47,     /* PH7113_LUMINANCE_CONTRAST - CONT7 CONT6 CONT5 CONT4 CONT3 CONT2 CONT1 CONT0 */
 178         0x0c, 0x40,     /* PH7113_CHROMA_SATURATION - SATN7 SATN6 SATN5 SATN4 SATN3 SATN2 SATN1 SATN0 */
 179         0x0d, 0x00,     /* PH7113_CHROMA_HUE_CONTROL - HUEC7 HUEC6 HUEC5 HUEC4 HUEC3 HUEC2 HUEC1 HUEC0 */
 180         0x0e, 0x01,     /* PH7113_CHROMA_CONTROL - CDTO CSTD2 CSTD1 CSTD0 DCCF FCTC CHBW1 CHBW0 */
 181         0x0f, 0xaa,     /* PH7113_CHROMA_GAIN_CONTROL - ACGC CGAIN6 CGAIN5 CGAIN4 CGAIN3 CGAIN2 CGAIN1 CGAIN0 */
 182         0x10, 0x00,     /* PH7113_FORMAT_DELAY_CONTROL - OFTS1 OFTS0 HDEL1 HDEL0 VRLN YDEL2 YDEL1 YDEL0 */
 183         0x11, 0x1C,     /* PH7113_OUTPUT_CONTROL_1 - GPSW1 CM99 GPSW0 HLSEL OEYC OERT VIPB COLO */
 184         0x12, 0x01,     /* PH7113_OUTPUT_CONTROL_2 - RTSE13 RTSE12 RTSE11 RTSE10 RTSE03 RTSE02 RTSE01 RTSE00 */
 185         0x13, 0x00,     /* PH7113_OUTPUT_CONTROL_3 - ADLSB (1) (1) OLDSB FIDP (1) AOSL1 AOSL0 */
 186         0x14, 0x00,     /* RESERVED 14 - (1) (1) (1) (1) (1) (1) (1) (1) */
 187         0x15, 0x00,     /* PH7113_V_GATE1_START - VSTA7 VSTA6 VSTA5 VSTA4 VSTA3 VSTA2 VSTA1 VSTA0 */
 188         0x16, 0x00,     /* PH7113_V_GATE1_STOP - VSTO7 VSTO6 VSTO5 VSTO4 VSTO3 VSTO2 VSTO1 VSTO0 */
 189         0x17, 0x00,     /* PH7113_V_GATE1_MSB - (1) (1) (1) (1) (1) (1) VSTO8 VSTA8 */
 190 };
 191
 192 static int
 193 saa7113_command (struct i2c_client *client,
 194                  unsigned int       cmd,
 195                  void              *arg)
 196 {
 197         struct saa7113 *decoder = i2c_get_clientdata(client);
 198
 199         switch (cmd) {
 200
 201         case 0:
 202         case DECODER_INIT:
 203         {
 204                 struct video_decoder_init *init = arg;
 205                 if (NULL != init)
 206                         return saa7113_init_decoder(client, init);
 207                 else {
 208                         struct video_decoder_init vdi;
 209                         vdi.data = saa7113_i2c_init;
 210                         vdi.len = sizeof(saa7113_i2c_init);
 211                         return saa7113_init_decoder(client, &vdi);
 212                 }
 213         }
 214
 215         case DECODER_DUMP:
 216         {
 217                 int i;
 218
 219                 for (i = 0; i < 32; i += 16) {
 220                         int j;
 221
 222                         printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i);
 223                         for (j = 0; j < 16; ++j) {
 224                                 printk(" %02x",
 225                                        saa7113_read(client, i + j));
 226                         }
 227                         printk("\n");
 228                 }
 229         }
 230                 break;
 231
 232         case DECODER_GET_CAPABILITIES:
 233         {
 234                 struct video_decoder_capability *cap = arg;
 235
 236                 cap->flags = VIDEO_DECODER_PAL |
 237                              VIDEO_DECODER_NTSC |
 238                              VIDEO_DECODER_SECAM |
 239                              VIDEO_DECODER_AUTO |
 240                              VIDEO_DECODER_CCIR;
 241                 cap->inputs = 8;
 242                 cap->outputs = 1;
 243         }
 244                 break;
 245
 246         case DECODER_GET_STATUS:
 247         {
 248                 int *iarg = arg;
 249                 int status;
 250                 int res;
 251
 252                 status = saa7113_read(client, 0x1f);
 253                 dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client),
 254                         status);
 255                 res = 0;
 256                 if ((status & (1 << 6)) == 0) {
 257                         res |= DECODER_STATUS_GOOD;
 258                 }
 259                 switch (decoder->norm) {
 260                 case VIDEO_MODE_NTSC:
 261                         res |= DECODER_STATUS_NTSC;
 262                         break;
 263                 case VIDEO_MODE_PAL:
 264                         res |= DECODER_STATUS_PAL;
 265                         break;
 266                 case VIDEO_MODE_SECAM:
 267                         res |= DECODER_STATUS_SECAM;
 268                         break;
 269                 default:
 270                 case VIDEO_MODE_AUTO:
 271                         if ((status & (1 << 5)) != 0) {
 272                                 res |= DECODER_STATUS_NTSC;
 273                         } else {
 274                                 res |= DECODER_STATUS_PAL;
 275                         }
 276                         break;
 277                 }
 278                 if ((status & (1 << 0)) != 0) {
 279                         res |= DECODER_STATUS_COLOR;
 280                 }
 281                 *iarg = res;
 282         }
 283                 break;
 284
 285         case DECODER_SET_GPIO:
 286         {
 287                 int *iarg = arg;
 288                 if (0 != *iarg) {
 289                         saa7113_write(client, 0x11,
 290                                 (decoder->reg[0x11] | 0x80));
 291                 } else {
 292                         saa7113_write(client, 0x11,
 293                                 (decoder->reg[0x11] & 0x7f));
 294                 }
 295                 break;
 296         }
 297
 298         case DECODER_SET_VBI_BYPASS:
 299         {
 300                 int *iarg = arg;
 301                 if (0 != *iarg) {
 302                         saa7113_write(client, 0x13,
 303                                 (decoder->reg[0x13] & 0xf0) | 0x0a);
 304                 } else {
 305                         saa7113_write(client, 0x13,
 306                                 (decoder->reg[0x13] & 0xf0));
 307                 }
 308                 break;
 309         }
 310
 311         case DECODER_SET_NORM:
 312         {
 313                 int *iarg = arg;
 314
 315                 switch (*iarg) {
 316
 317                 case VIDEO_MODE_NTSC:
 318                         saa7113_write(client, 0x08,
 319                                       (decoder->reg[0x08] & 0x3f) | 0x40);
 320                         saa7113_write(client, 0x0e,
 321                                       (decoder->reg[0x0e] & 0x8f));
 322                         break;
 323
 324                 case VIDEO_MODE_PAL:
 325                         saa7113_write(client, 0x08,
 326                                       (decoder->reg[0x08] & 0x3f) | 0x00);
 327                         saa7113_write(client, 0x0e,
 328                                       (decoder->reg[0x0e] & 0x8f));
 329                         break;
 330
 331                 case VIDEO_MODE_SECAM:
 332                         saa7113_write(client, 0x08,
 333                                       (decoder->reg[0x0e] & 0x3f) | 0x00);
 334                         saa7113_write(client, 0x0e,
 335                                       (decoder->reg[0x0e] & 0x8f) | 0x50);
 336                         break;
 337
 338                 case VIDEO_MODE_AUTO:
 339                         saa7113_write(client, 0x08,
 340                                       (decoder->reg[0x08] & 0x3f) | 0x80);
 341                         saa7113_write(client, 0x0e,
 342                                       (decoder->reg[0x0e] & 0x8f));
 343                         break;
 344
 345                 default:
 346                         return -EINVAL;
 347
 348                 }
 349                 decoder->norm = *iarg;
 350         }
 351                 break;
 352
 353         case DECODER_SET_INPUT:
 354         {
 355                 int *iarg = arg;
 356                 if (*iarg < 0 || *iarg > 9) {
 357                         return -EINVAL;
 358                 }
 359                 if (decoder->input != *iarg) {
 360                         decoder->input = *iarg;
 361                         /* select mode */
 362                         saa7113_write(client, 0x02,
 363                                       (decoder->reg[0x02] & 0xf0) | decoder->input);
 364                         /* bypass chrominance trap for modes 4..7 */
 365                         saa7113_write(client, 0x09,
 366                                       (decoder->reg[0x09] & 0x7f) | ((decoder->input > 3) ? 0x80 : 0));
 367                 }
 368         }
 369                 break;
 370
 371         case DECODER_SET_OUTPUT:
 372         {
 373                 int *iarg = arg;
 374
 375                 /* not much choice of outputs */
 376                 if (*iarg != 0) {
 377                         return -EINVAL;
 378                 }
 379         }
 380                 break;
 381
 382         case DECODER_ENABLE_OUTPUT:
 383         {
 384                 int *iarg = arg;
 385                 int enable = (*iarg != 0);
 386
 387                 if (decoder->enable != enable) {
 388                         decoder->enable = enable;
 389
 390                         /* RJ: If output should be disabled (for
 391                          * playing videos), we also need a open PLL.
 392                          * The input is set to 0 (where no input
 393                          * source is connected), although this
 394                          * is not necessary.
 395                          *
 396                          * If output should be enabled, we have to
 397                          * reverse the above.
 398                          */
 399
 400                         if (decoder->enable) {
 401                                 saa7113_write(client, 0x02,
 402                                               (decoder->
 403                                                reg[0x02] & 0xf8) |
 404                                               decoder->input);
 405                                 saa7113_write(client, 0x08,
 406                                               (decoder->reg[0x08] & 0xfb));
 407                                 saa7113_write(client, 0x11,
 408                                               (decoder->
 409                                                reg[0x11] & 0xf3) | 0x0c);
 410                         } else {
 411                                 saa7113_write(client, 0x02,
 412                                               (decoder->reg[0x02] & 0xf8));
 413                                 saa7113_write(client, 0x08,
 414                                               (decoder->
 415                                                reg[0x08] & 0xfb) | 0x04);
 416                                 saa7113_write(client, 0x11,
 417                                               (decoder->reg[0x11] & 0xf3));
 418                         }
 419                 }
 420         }
 421                 break;
 422
 423         case DECODER_SET_PICTURE:
 424         {
 425                 struct video_picture *pic = arg;
 426
 427                 if (decoder->bright != pic->brightness) {
 428                         /* We want 0 to 255 we get 0-65535 */
 429                         decoder->bright = pic->brightness;
 430                         saa7113_write(client, 0x0a, decoder->bright >> 8);
 431                 }
 432                 if (decoder->contrast != pic->contrast) {
 433                         /* We want 0 to 127 we get 0-65535 */
 434                         decoder->contrast = pic->contrast;
 435                         saa7113_write(client, 0x0b,
 436                                       decoder->contrast >> 9);
 437                 }
 438                 if (decoder->sat != pic->colour) {
 439                         /* We want 0 to 127 we get 0-65535 */
 440                         decoder->sat = pic->colour;
 441                         saa7113_write(client, 0x0c, decoder->sat >> 9);
 442                 }
 443                 if (decoder->hue != pic->hue) {
 444                         /* We want -128 to 127 we get 0-65535 */
 445                         decoder->hue = pic->hue;
 446                         saa7113_write(client, 0x0d,
 447                                       (decoder->hue - 32768) >> 8);
 448                 }
 449         }
 450                 break;
 451
 452         default:
 453                 return -EINVAL;
 454         }
 455
 456         return 0;
 457 }
 458
 459 /* ----------------------------------------------------------------------- */
 460
 461 /*
 462  * Generic i2c probe
 463  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 464  */
 465
 466 /* standard i2c insmod options */
 467 static unsigned short normal_i2c[] = {
 468         I2C_SAA7113>>1,         /* saa7113 */
 469         I2C_SAA7114>>1,         /* saa7114 */
 470         I2C_CLIENT_END
 471 };
 472
 473 I2C_CLIENT_INSMOD;
 474
 475
 476 static struct i2c_driver i2c_driver_saa7113;
 477
 478 static int
 479 saa7113_detect_client (struct i2c_adapter *adapter,
 480                        int                 address,
 481                        int                 kind)
 482 {
 483         int i;
 484         struct i2c_client *client;
 485         struct saa7113 *decoder;
 486         struct video_decoder_init vdi;
 487
 488         dprintk(1,
 489                 KERN_INFO
 490                 "saa7113.c: detecting saa7113 client on address 0x%x\n",
 491                 address << 1);
 492
 493         /* Check if the adapter supports the needed features */
 494         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 495                 return 0;
 496
 497         client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
 498         if (client == 0)
 499                 return -ENOMEM;
 500         memset(client, 0, sizeof(struct i2c_client));
 501         client->addr = address;
 502         client->adapter = adapter;
 503         client->driver = &i2c_driver_saa7113;
 504         client->flags = I2C_CLIENT_ALLOW_USE;
 505         strlcpy(I2C_NAME(client), "saa7113", sizeof(I2C_NAME(client)));
 506         decoder = kmalloc(sizeof(struct saa7113), GFP_KERNEL);
 507         if (decoder == NULL) {
 508                 kfree(client);
 509                 return -ENOMEM;
 510         }
 511         memset(decoder, 0, sizeof(struct saa7113));
 512         decoder->norm = VIDEO_MODE_NTSC;
 513         decoder->input = 0;
 514         decoder->enable = 1;
 515         decoder->bright = 32768;
 516         decoder->contrast = 32768;
 517         decoder->hue = 32768;
 518         decoder->sat = 32768;
 519         i2c_set_clientdata(client, decoder);
 520
 521         i = i2c_attach_client(client);
 522         if (i) {
 523                 kfree(client);
 524                 kfree(decoder);
 525                 return i;
 526         }
 527
 528         vdi.data = saa7113_i2c_init;
 529         vdi.len = sizeof(saa7113_i2c_init);
 530         i = saa7113_init_decoder(client, &vdi);
 531         if (i < 0) {
 532                 dprintk(1, KERN_ERR "%s_attach error: init status %d\n",
 533                         I2C_NAME(client), i);
 534         } else {
 535                 dprintk(1,
 536                         KERN_INFO
 537                         "%s_attach: chip version %x at address 0x%x\n",
 538                         I2C_NAME(client), saa7113_read(client, 0x00) >> 4,
 539                         client->addr << 1);
 540         }
 541
 542         return 0;
 543 }
 544
 545 static int
 546 saa7113_attach_adapter (struct i2c_adapter *adapter)
 547 {
 548         dprintk(1,
 549                 KERN_INFO
 550                 "saa7113.c: starting probe for adapter %s (0x%x)\n",
 551                 I2C_NAME(adapter), adapter->id);
 552         return i2c_probe(adapter, &addr_data, &saa7113_detect_client);
 553 }
 554
 555 static int
 556 saa7113_detach_client (struct i2c_client *client)
 557 {
 558         struct saa7113 *decoder = i2c_get_clientdata(client);
 559         int err;
 560
 561         err = i2c_detach_client(client);
 562         if (err) {
 563                 return err;
 564         }
 565
 566         kfree(decoder);
 567         kfree(client);
 568
 569         return 0;
 570 }
 571
 572 /* ----------------------------------------------------------------------- */
 573
 574 static struct i2c_driver i2c_driver_saa7113 = {
 575         .owner = THIS_MODULE,
 576         .name = "saa7113",
 577
 578         .id = I2C_DRIVERID_SAA7113,
 579         .flags = I2C_DF_NOTIFY,
 580
 581         .attach_adapter = saa7113_attach_adapter,
 582         .detach_client = saa7113_detach_client,
 583         .command = saa7113_command,
 584 };
 585
 586 static int __init
 587 saa7113_init (void)
 588 {
 589         return i2c_add_driver(&i2c_driver_saa7113);
 590 }
 591
 592 static void __exit
 593 saa7113_exit (void)
 594 {
 595         i2c_del_driver(&i2c_driver_saa7113);
 596 }
 597
 598 module_init(saa7113_init);
 599 module_exit(saa7113_exit);