git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/saa7110.c

   1 /*
   2  * saa7110 - Philips SAA7110(A) video decoder driver
   3  *
   4  * Copyright (C) 1998 Pauline Middelink <middelin@polyware.nl>
   5  *
   6  * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
   7  * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
   8  *    - some corrections for Pinnacle Systems Inc. DC10plus card.
   9  *
  10  * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
  11  *    - moved over to linux>=2.4.x i2c protocol (1/1/2003)
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  26  */
  27
  28 #include <linux/module.h>
  29 #include <linux/init.h>
  30 #include <linux/types.h>
  31 #include <linux/delay.h>
  32 #include <linux/slab.h>
  33 #include <linux/wait.h>
  34 #include <asm/uaccess.h>
  35 #include <linux/i2c.h>
  36 #include <linux/videodev.h>
  37 #include <linux/video_decoder.h>
  38 #include <media/v4l2-common.h>
  39 #include <media/v4l2-i2c-drv-legacy.h>
  40
  41 MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
  42 MODULE_AUTHOR("Pauline Middelink");
  43 MODULE_LICENSE("GPL");
  44
  45 static int debug;
  46 module_param(debug, int, 0);
  47 MODULE_PARM_DESC(debug, "Debug level (0-1)");
  48
  49 #define SAA7110_MAX_INPUT       9       /* 6 CVBS, 3 SVHS */
  50 #define SAA7110_MAX_OUTPUT      1       /* 1 YUV */
  51
  52 #define SAA7110_NR_REG          0x35
  53
  54 struct saa7110 {
  55         u8 reg[SAA7110_NR_REG];
  56
  57         int norm;
  58         int input;
  59         int enable;
  60         int bright;
  61         int contrast;
  62         int hue;
  63         int sat;
  64
  65         wait_queue_head_t wq;
  66 };
  67
  68 /* ----------------------------------------------------------------------- */
  69 /* I2C support functions                                                   */
  70 /* ----------------------------------------------------------------------- */
  71
  72 static int saa7110_write(struct i2c_client *client, u8 reg, u8 value)
  73 {
  74         struct saa7110 *decoder = i2c_get_clientdata(client);
  75
  76         decoder->reg[reg] = value;
  77         return i2c_smbus_write_byte_data(client, reg, value);
  78 }
  79
  80 static int saa7110_write_block(struct i2c_client *client, const u8 *data, unsigned int len)
  81 {
  82         int ret = -1;
  83         u8 reg = *data;         /* first register to write to */
  84
  85         /* Sanity check */
  86         if (reg + (len - 1) > SAA7110_NR_REG)
  87                 return ret;
  88
  89         /* the saa7110 has an autoincrement function, use it if
  90          * the adapter understands raw I2C */
  91         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
  92                 struct saa7110 *decoder = i2c_get_clientdata(client);
  93
  94                 ret = i2c_master_send(client, data, len);
  95
  96                 /* Cache the written data */
  97                 memcpy(decoder->reg + reg, data + 1, len - 1);
  98         } else {
  99                 for (++data, --len; len; len--) {
 100                         ret = saa7110_write(client, reg++, *data++);
 101                         if (ret < 0)
 102                                 break;
 103                 }
 104         }
 105
 106         return ret;
 107 }
 108
 109 static inline int saa7110_read(struct i2c_client *client)
 110 {
 111         return i2c_smbus_read_byte(client);
 112 }
 113
 114 /* ----------------------------------------------------------------------- */
 115 /* SAA7110 functions                                                       */
 116 /* ----------------------------------------------------------------------- */
 117
 118 #define FRESP_06H_COMPST 0x03   //0x13
 119 #define FRESP_06H_SVIDEO 0x83   //0xC0
 120
 121
 122 static int saa7110_selmux(struct i2c_client *client, int chan)
 123 {
 124         static const unsigned char modes[9][8] = {
 125                 /* mode 0 */
 126                 {FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
 127                               0x44, 0x75, 0x16},
 128                 /* mode 1 */
 129                 {FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
 130                               0x44, 0x75, 0x16},
 131                 /* mode 2 */
 132                 {FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
 133                               0x60, 0xB5, 0x05},
 134                 /* mode 3 */
 135                 {FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
 136                               0x60, 0xB5, 0x05},
 137                 /* mode 4 */
 138                 {FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
 139                               0x60, 0xB5, 0x03},
 140                 /* mode 5 */
 141                 {FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
 142                               0x60, 0xB5, 0x03},
 143                 /* mode 6 */
 144                 {FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
 145                               0x44, 0x75, 0x12},
 146                 /* mode 7 */
 147                 {FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
 148                               0x60, 0xB5, 0x14},
 149                 /* mode 8 */
 150                 {FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
 151                               0x44, 0x75, 0x21}
 152         };
 153         struct saa7110 *decoder = i2c_get_clientdata(client);
 154         const unsigned char *ptr = modes[chan];
 155
 156         saa7110_write(client, 0x06, ptr[0]);    /* Luminance control    */
 157         saa7110_write(client, 0x20, ptr[1]);    /* Analog Control #1    */
 158         saa7110_write(client, 0x21, ptr[2]);    /* Analog Control #2    */
 159         saa7110_write(client, 0x22, ptr[3]);    /* Mixer Control #1     */
 160         saa7110_write(client, 0x2C, ptr[4]);    /* Mixer Control #2     */
 161         saa7110_write(client, 0x30, ptr[5]);    /* ADCs gain control    */
 162         saa7110_write(client, 0x31, ptr[6]);    /* Mixer Control #3     */
 163         saa7110_write(client, 0x21, ptr[7]);    /* Analog Control #2    */
 164         decoder->input = chan;
 165
 166         return 0;
 167 }
 168
 169 static const unsigned char initseq[1 + SAA7110_NR_REG] = {
 170         0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
 171         /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
 172         /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
 173         /* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 174         /* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
 175         /* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
 176         /* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
 177 };
 178
 179 static int determine_norm(struct i2c_client *client)
 180 {
 181         DEFINE_WAIT(wait);
 182         struct saa7110 *decoder = i2c_get_clientdata(client);
 183         int status;
 184
 185         /* mode changed, start automatic detection */
 186         saa7110_write_block(client, initseq, sizeof(initseq));
 187         saa7110_selmux(client, decoder->input);
 188         prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
 189         schedule_timeout(msecs_to_jiffies(250));
 190         finish_wait(&decoder->wq, &wait);
 191         status = saa7110_read(client);
 192         if (status & 0x40) {
 193                 v4l_dbg(1, debug, client, "status=0x%02x (no signal)\n", status);
 194                 return decoder->norm;   // no change
 195         }
 196         if ((status & 3) == 0) {
 197                 saa7110_write(client, 0x06, 0x83);
 198                 if (status & 0x20) {
 199                         v4l_dbg(1, debug, client, "status=0x%02x (NTSC/no color)\n", status);
 200                         //saa7110_write(client,0x2E,0x81);
 201                         return VIDEO_MODE_NTSC;
 202                 }
 203                 v4l_dbg(1, debug, client, "status=0x%02x (PAL/no color)\n", status);
 204                 //saa7110_write(client,0x2E,0x9A);
 205                 return VIDEO_MODE_PAL;
 206         }
 207         //saa7110_write(client,0x06,0x03);
 208         if (status & 0x20) {    /* 60Hz */
 209                 v4l_dbg(1, debug, client, "status=0x%02x (NTSC)\n", status);
 210                 saa7110_write(client, 0x0D, 0x86);
 211                 saa7110_write(client, 0x0F, 0x50);
 212                 saa7110_write(client, 0x11, 0x2C);
 213                 //saa7110_write(client,0x2E,0x81);
 214                 return VIDEO_MODE_NTSC;
 215         }
 216
 217         /* 50Hz -> PAL/SECAM */
 218         saa7110_write(client, 0x0D, 0x86);
 219         saa7110_write(client, 0x0F, 0x10);
 220         saa7110_write(client, 0x11, 0x59);
 221         //saa7110_write(client,0x2E,0x9A);
 222
 223         prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
 224         schedule_timeout(msecs_to_jiffies(250));
 225         finish_wait(&decoder->wq, &wait);
 226
 227         status = saa7110_read(client);
 228         if ((status & 0x03) == 0x01) {
 229                 v4l_dbg(1, debug, client, "status=0x%02x (SECAM)\n", status);
 230                 saa7110_write(client, 0x0D, 0x87);
 231                 return VIDEO_MODE_SECAM;
 232         }
 233         v4l_dbg(1, debug, client, "status=0x%02x (PAL)\n", status);
 234         return VIDEO_MODE_PAL;
 235 }
 236
 237 static int
 238 saa7110_command (struct i2c_client *client,
 239                  unsigned int       cmd,
 240                  void              *arg)
 241 {
 242         struct saa7110 *decoder = i2c_get_clientdata(client);
 243         int v;
 244
 245         switch (cmd) {
 246         case 0:
 247                 //saa7110_write_block(client, initseq, sizeof(initseq));
 248                 break;
 249
 250         case DECODER_GET_CAPABILITIES:
 251         {
 252                 struct video_decoder_capability *dc = arg;
 253
 254                 dc->flags =
 255                     VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC |
 256                     VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO;
 257                 dc->inputs = SAA7110_MAX_INPUT;
 258                 dc->outputs = SAA7110_MAX_OUTPUT;
 259                 break;
 260         }
 261
 262         case DECODER_GET_STATUS:
 263         {
 264                 int status;
 265                 int res = 0;
 266
 267                 status = saa7110_read(client);
 268                 v4l_dbg(1, debug, client, "status=0x%02x norm=%d\n",
 269                                status, decoder->norm);
 270                 if (!(status & 0x40))
 271                         res |= DECODER_STATUS_GOOD;
 272                 if (status & 0x03)
 273                         res |= DECODER_STATUS_COLOR;
 274
 275                 switch (decoder->norm) {
 276                 case VIDEO_MODE_NTSC:
 277                         res |= DECODER_STATUS_NTSC;
 278                         break;
 279                 case VIDEO_MODE_PAL:
 280                         res |= DECODER_STATUS_PAL;
 281                         break;
 282                 case VIDEO_MODE_SECAM:
 283                         res |= DECODER_STATUS_SECAM;
 284                         break;
 285                 }
 286                 *(int *) arg = res;
 287                 break;
 288         }
 289
 290         case DECODER_SET_NORM:
 291                 v = *(int *) arg;
 292                 if (decoder->norm != v) {
 293                         decoder->norm = v;
 294                         //saa7110_write(client, 0x06, 0x03);
 295                         switch (v) {
 296                         case VIDEO_MODE_NTSC:
 297                                 saa7110_write(client, 0x0D, 0x86);
 298                                 saa7110_write(client, 0x0F, 0x50);
 299                                 saa7110_write(client, 0x11, 0x2C);
 300                                 //saa7110_write(client, 0x2E, 0x81);
 301                                 v4l_dbg(1, debug, client, "switched to NTSC\n");
 302                                 break;
 303                         case VIDEO_MODE_PAL:
 304                                 saa7110_write(client, 0x0D, 0x86);
 305                                 saa7110_write(client, 0x0F, 0x10);
 306                                 saa7110_write(client, 0x11, 0x59);
 307                                 //saa7110_write(client, 0x2E, 0x9A);
 308                                 v4l_dbg(1, debug, client, "switched to PAL\n");
 309                                 break;
 310                         case VIDEO_MODE_SECAM:
 311                                 saa7110_write(client, 0x0D, 0x87);
 312                                 saa7110_write(client, 0x0F, 0x10);
 313                                 saa7110_write(client, 0x11, 0x59);
 314                                 //saa7110_write(client, 0x2E, 0x9A);
 315                                 v4l_dbg(1, debug, client, "switched to SECAM\n");
 316                                 break;
 317                         case VIDEO_MODE_AUTO:
 318                                 v4l_dbg(1, debug, client, "switched to AUTO\n");
 319                                 decoder->norm = determine_norm(client);
 320                                 *(int *) arg = decoder->norm;
 321                                 break;
 322                         default:
 323                                 return -EPERM;
 324                         }
 325                 }
 326                 break;
 327
 328         case DECODER_SET_INPUT:
 329                 v = *(int *) arg;
 330                 if (v < 0 || v >= SAA7110_MAX_INPUT) {
 331                         v4l_dbg(1, debug, client, "input=%d not available\n", v);
 332                         return -EINVAL;
 333                 }
 334                 if (decoder->input != v) {
 335                         saa7110_selmux(client, v);
 336                         v4l_dbg(1, debug, client, "switched to input=%d\n", v);
 337                 }
 338                 break;
 339
 340         case DECODER_SET_OUTPUT:
 341                 v = *(int *) arg;
 342                 /* not much choice of outputs */
 343                 if (v != 0)
 344                         return -EINVAL;
 345                 break;
 346
 347         case DECODER_ENABLE_OUTPUT:
 348                 v = *(int *) arg;
 349                 if (decoder->enable != v) {
 350                         decoder->enable = v;
 351                         saa7110_write(client, 0x0E, v ? 0x18 : 0x80);
 352                         v4l_dbg(1, debug, client, "YUV %s\n", v ? "on" : "off");
 353                 }
 354                 break;
 355
 356         case DECODER_SET_PICTURE:
 357         {
 358                 struct video_picture *pic = arg;
 359
 360                 if (decoder->bright != pic->brightness) {
 361                         /* We want 0 to 255 we get 0-65535 */
 362                         decoder->bright = pic->brightness;
 363                         saa7110_write(client, 0x19, decoder->bright >> 8);
 364                 }
 365                 if (decoder->contrast != pic->contrast) {
 366                         /* We want 0 to 127 we get 0-65535 */
 367                         decoder->contrast = pic->contrast;
 368                         saa7110_write(client, 0x13,
 369                                       decoder->contrast >> 9);
 370                 }
 371                 if (decoder->sat != pic->colour) {
 372                         /* We want 0 to 127 we get 0-65535 */
 373                         decoder->sat = pic->colour;
 374                         saa7110_write(client, 0x12, decoder->sat >> 9);
 375                 }
 376                 if (decoder->hue != pic->hue) {
 377                         /* We want -128 to 127 we get 0-65535 */
 378                         decoder->hue = pic->hue;
 379                         saa7110_write(client, 0x07,
 380                                       (decoder->hue >> 8) - 128);
 381                 }
 382                 break;
 383         }
 384
 385         case DECODER_DUMP:
 386                 if (!debug)
 387                         break;
 388                 for (v = 0; v < SAA7110_NR_REG; v += 16) {
 389                         int j;
 390                         v4l_dbg(1, debug, client, "%02x:", v);
 391                         for (j = 0; j < 16 && v + j < SAA7110_NR_REG; j++)
 392                                 printk(KERN_CONT " %02x", decoder->reg[v + j]);
 393                         printk(KERN_CONT "\n");
 394                 }
 395                 break;
 396
 397         default:
 398                 v4l_dbg(1, debug, client, "unknown command %08x\n", cmd);
 399                 return -EINVAL;
 400         }
 401         return 0;
 402 }
 403
 404 /* ----------------------------------------------------------------------- */
 405
 406 /*
 407  * Generic i2c probe
 408  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 409  */
 410
 411 static unsigned short normal_i2c[] = { 0x9c >> 1, 0x9e >> 1, I2C_CLIENT_END };
 412
 413 I2C_CLIENT_INSMOD;
 414
 415 static int saa7110_probe(struct i2c_client *client,
 416                         const struct i2c_device_id *id)
 417 {
 418         struct saa7110 *decoder;
 419         int rv;
 420
 421         /* Check if the adapter supports the needed features */
 422         if (!i2c_check_functionality(client->adapter,
 423                 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
 424                 return -ENODEV;
 425
 426         v4l_info(client, "chip found @ 0x%x (%s)\n",
 427                         client->addr << 1, client->adapter->name);
 428
 429         decoder = kzalloc(sizeof(struct saa7110), GFP_KERNEL);
 430         if (!decoder)
 431                 return -ENOMEM;
 432         decoder->norm = VIDEO_MODE_PAL;
 433         decoder->input = 0;
 434         decoder->enable = 1;
 435         decoder->bright = 32768;
 436         decoder->contrast = 32768;
 437         decoder->hue = 32768;
 438         decoder->sat = 32768;
 439         init_waitqueue_head(&decoder->wq);
 440         i2c_set_clientdata(client, decoder);
 441
 442         rv = saa7110_write_block(client, initseq, sizeof(initseq));
 443         if (rv < 0) {
 444                 v4l_dbg(1, debug, client, "init status %d\n", rv);
 445         } else {
 446                 int ver, status;
 447                 saa7110_write(client, 0x21, 0x10);
 448                 saa7110_write(client, 0x0e, 0x18);
 449                 saa7110_write(client, 0x0D, 0x04);
 450                 ver = saa7110_read(client);
 451                 saa7110_write(client, 0x0D, 0x06);
 452                 //mdelay(150);
 453                 status = saa7110_read(client);
 454                 v4l_dbg(1, debug, client, "version %x, status=0x%02x\n",
 455                                ver, status);
 456                 saa7110_write(client, 0x0D, 0x86);
 457                 saa7110_write(client, 0x0F, 0x10);
 458                 saa7110_write(client, 0x11, 0x59);
 459                 //saa7110_write(client, 0x2E, 0x9A);
 460         }
 461
 462         //saa7110_selmux(client,0);
 463         //determine_norm(client);
 464         /* setup and implicit mode 0 select has been performed */
 465
 466         return 0;
 467 }
 468
 469 static int saa7110_remove(struct i2c_client *client)
 470 {
 471         kfree(i2c_get_clientdata(client));
 472         return 0;
 473 }
 474
 475 /* ----------------------------------------------------------------------- */
 476
 477 static const struct i2c_device_id saa7110_id[] = {
 478         { "saa7110", 0 },
 479         { }
 480 };
 481 MODULE_DEVICE_TABLE(i2c, saa7110_id);
 482
 483 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
 484         .name = "saa7110",
 485         .driverid = I2C_DRIVERID_SAA7110,
 486         .command = saa7110_command,
 487         .probe = saa7110_probe,
 488         .remove = saa7110_remove,
 489         .id_table = saa7110_id,
 490 };