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         v4l2_std_id 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 v4l2_std_id 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 V4L2_STD_NTSC;
 202                 }
 203                 v4l_dbg(1, debug, client, "status=0x%02x (PAL/no color)\n", status);
 204                 //saa7110_write(client,0x2E,0x9A);
 205                 return V4L2_STD_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 V4L2_STD_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 V4L2_STD_SECAM;
 232         }
 233         v4l_dbg(1, debug, client, "status=0x%02x (PAL)\n", status);
 234         return V4L2_STD_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         struct v4l2_routing *route = arg;
 244         v4l2_std_id std;
 245         int v;
 246
 247         switch (cmd) {
 248         case VIDIOC_INT_INIT:
 249                 //saa7110_write_block(client, initseq, sizeof(initseq));
 250                 break;
 251
 252         case VIDIOC_INT_G_INPUT_STATUS:
 253         {
 254                 int res = V4L2_IN_ST_NO_SIGNAL;
 255                 int status;
 256
 257                 status = saa7110_read(client);
 258                 v4l_dbg(1, debug, client, "status=0x%02x norm=%llx\n",
 259                                status, decoder->norm);
 260                 if (!(status & 0x40))
 261                         res = 0;
 262                 if (!(status & 0x03))
 263                         res |= V4L2_IN_ST_NO_COLOR;
 264
 265                 *(int *) arg = res;
 266                 break;
 267         }
 268
 269         case VIDIOC_QUERYSTD:
 270         {
 271                 *(v4l2_std_id *)arg = determine_norm(client);
 272                 break;
 273         }
 274
 275         case VIDIOC_S_STD:
 276                 std = *(v4l2_std_id *) arg;
 277                 if (decoder->norm != std) {
 278                         decoder->norm = std;
 279                         //saa7110_write(client, 0x06, 0x03);
 280                         if (std & V4L2_STD_NTSC) {
 281                                 saa7110_write(client, 0x0D, 0x86);
 282                                 saa7110_write(client, 0x0F, 0x50);
 283                                 saa7110_write(client, 0x11, 0x2C);
 284                                 //saa7110_write(client, 0x2E, 0x81);
 285                                 v4l_dbg(1, debug, client, "switched to NTSC\n");
 286                         } else if (std & V4L2_STD_PAL) {
 287                                 saa7110_write(client, 0x0D, 0x86);
 288                                 saa7110_write(client, 0x0F, 0x10);
 289                                 saa7110_write(client, 0x11, 0x59);
 290                                 //saa7110_write(client, 0x2E, 0x9A);
 291                                 v4l_dbg(1, debug, client, "switched to PAL\n");
 292                         } else if (std & V4L2_STD_SECAM) {
 293                                 saa7110_write(client, 0x0D, 0x87);
 294                                 saa7110_write(client, 0x0F, 0x10);
 295                                 saa7110_write(client, 0x11, 0x59);
 296                                 //saa7110_write(client, 0x2E, 0x9A);
 297                                 v4l_dbg(1, debug, client, "switched to SECAM\n");
 298                         } else {
 299                                 return -EINVAL;
 300                         }
 301                 }
 302                 break;
 303
 304         case VIDIOC_INT_S_VIDEO_ROUTING:
 305                 if (route->input < 0 || route->input >= SAA7110_MAX_INPUT) {
 306                         v4l_dbg(1, debug, client, "input=%d not available\n", route->input);
 307                         return -EINVAL;
 308                 }
 309                 if (decoder->input != route->input) {
 310                         saa7110_selmux(client, route->input);
 311                         v4l_dbg(1, debug, client, "switched to input=%d\n", route->input);
 312                 }
 313                 break;
 314
 315         case VIDIOC_STREAMON:
 316         case VIDIOC_STREAMOFF:
 317                 v = cmd == VIDIOC_STREAMON;
 318                 if (decoder->enable != v) {
 319                         decoder->enable = v;
 320                         saa7110_write(client, 0x0E, v ? 0x18 : 0x80);
 321                         v4l_dbg(1, debug, client, "YUV %s\n", v ? "on" : "off");
 322                 }
 323                 break;
 324
 325         case VIDIOC_QUERYCTRL:
 326         {
 327                 struct v4l2_queryctrl *qc = arg;
 328
 329                 switch (qc->id) {
 330                 case V4L2_CID_BRIGHTNESS:
 331                         return v4l2_ctrl_query_fill(qc, 0, 255, 1, 128);
 332                 case V4L2_CID_CONTRAST:
 333                 case V4L2_CID_SATURATION:
 334                         return v4l2_ctrl_query_fill(qc, 0, 127, 1, 64);
 335                 case V4L2_CID_HUE:
 336                         return v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
 337                 default:
 338                         return -EINVAL;
 339                 }
 340                 break;
 341         }
 342
 343         case VIDIOC_G_CTRL:
 344         {
 345                 struct v4l2_control *ctrl = arg;
 346
 347                 switch (ctrl->id) {
 348                 case V4L2_CID_BRIGHTNESS:
 349                         ctrl->value = decoder->bright;
 350                         break;
 351                 case V4L2_CID_CONTRAST:
 352                         ctrl->value = decoder->contrast;
 353                         break;
 354                 case V4L2_CID_SATURATION:
 355                         ctrl->value = decoder->sat;
 356                         break;
 357                 case V4L2_CID_HUE:
 358                         ctrl->value = decoder->hue;
 359                         break;
 360                 default:
 361                         return -EINVAL;
 362                 }
 363                 break;
 364         }
 365
 366         case VIDIOC_S_CTRL:
 367         {
 368                 struct v4l2_control *ctrl = arg;
 369
 370                 switch (ctrl->id) {
 371                 case V4L2_CID_BRIGHTNESS:
 372                         if (decoder->bright != ctrl->value) {
 373                                 decoder->bright = ctrl->value;
 374                                 saa7110_write(client, 0x19, decoder->bright);
 375                         }
 376                         break;
 377                 case V4L2_CID_CONTRAST:
 378                         if (decoder->contrast != ctrl->value) {
 379                                 decoder->contrast = ctrl->value;
 380                                 saa7110_write(client, 0x13, decoder->contrast);
 381                         }
 382                         break;
 383                 case V4L2_CID_SATURATION:
 384                         if (decoder->sat != ctrl->value) {
 385                                 decoder->sat = ctrl->value;
 386                                 saa7110_write(client, 0x12, decoder->sat);
 387                         }
 388                         break;
 389                 case V4L2_CID_HUE:
 390                         if (decoder->hue != ctrl->value) {
 391                                 decoder->hue = ctrl->value;
 392                                 saa7110_write(client, 0x07, decoder->hue);
 393                         }
 394                         break;
 395                 default:
 396                         return -EINVAL;
 397                 }
 398                 break;
 399         }
 400
 401         default:
 402                 v4l_dbg(1, debug, client, "unknown command %08x\n", cmd);
 403                 return -EINVAL;
 404         }
 405         return 0;
 406 }
 407
 408 /* ----------------------------------------------------------------------- */
 409
 410 /*
 411  * Generic i2c probe
 412  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 413  */
 414
 415 static unsigned short normal_i2c[] = { 0x9c >> 1, 0x9e >> 1, I2C_CLIENT_END };
 416
 417 I2C_CLIENT_INSMOD;
 418
 419 static int saa7110_probe(struct i2c_client *client,
 420                         const struct i2c_device_id *id)
 421 {
 422         struct saa7110 *decoder;
 423         int rv;
 424
 425         /* Check if the adapter supports the needed features */
 426         if (!i2c_check_functionality(client->adapter,
 427                 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
 428                 return -ENODEV;
 429
 430         v4l_info(client, "chip found @ 0x%x (%s)\n",
 431                         client->addr << 1, client->adapter->name);
 432
 433         decoder = kzalloc(sizeof(struct saa7110), GFP_KERNEL);
 434         if (!decoder)
 435                 return -ENOMEM;
 436         decoder->norm = V4L2_STD_PAL;
 437         decoder->input = 0;
 438         decoder->enable = 1;
 439         decoder->bright = 32768;
 440         decoder->contrast = 32768;
 441         decoder->hue = 32768;
 442         decoder->sat = 32768;
 443         init_waitqueue_head(&decoder->wq);
 444         i2c_set_clientdata(client, decoder);
 445
 446         rv = saa7110_write_block(client, initseq, sizeof(initseq));
 447         if (rv < 0) {
 448                 v4l_dbg(1, debug, client, "init status %d\n", rv);
 449         } else {
 450                 int ver, status;
 451                 saa7110_write(client, 0x21, 0x10);
 452                 saa7110_write(client, 0x0e, 0x18);
 453                 saa7110_write(client, 0x0D, 0x04);
 454                 ver = saa7110_read(client);
 455                 saa7110_write(client, 0x0D, 0x06);
 456                 //mdelay(150);
 457                 status = saa7110_read(client);
 458                 v4l_dbg(1, debug, client, "version %x, status=0x%02x\n",
 459                                ver, status);
 460                 saa7110_write(client, 0x0D, 0x86);
 461                 saa7110_write(client, 0x0F, 0x10);
 462                 saa7110_write(client, 0x11, 0x59);
 463                 //saa7110_write(client, 0x2E, 0x9A);
 464         }
 465
 466         //saa7110_selmux(client,0);
 467         //determine_norm(client);
 468         /* setup and implicit mode 0 select has been performed */
 469
 470         return 0;
 471 }
 472
 473 static int saa7110_remove(struct i2c_client *client)
 474 {
 475         kfree(i2c_get_clientdata(client));
 476         return 0;
 477 }
 478
 479 /* ----------------------------------------------------------------------- */
 480
 481 static const struct i2c_device_id saa7110_id[] = {
 482         { "saa7110", 0 },
 483         { }
 484 };
 485 MODULE_DEVICE_TABLE(i2c, saa7110_id);
 486
 487 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
 488         .name = "saa7110",
 489         .driverid = I2C_DRIVERID_SAA7110,
 490         .command = saa7110_command,
 491         .probe = saa7110_probe,
 492         .remove = saa7110_remove,
 493         .id_table = saa7110_id,
 494 };