drivers/media/video/saa7114.c

   1 /*
   2  * saa7114 - Philips SAA7114H video decoder driver version 0.0.1
   3  *
   4  * Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com>
   5  *
   6  * Based on saa7111 driver by Dave Perks
   7  *
   8  * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
   9  *
  10  * Slight changes for video timing and attachment output by
  11  * Wolfgang Scherr <scherr@net4you.net>
  12  *
  13  * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
  14  *    - moved over to linux>=2.4.x i2c protocol (1/1/2003)
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  29  */
  30
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/delay.h>
  34 #include <linux/errno.h>
  35 #include <linux/fs.h>
  36 #include <linux/kernel.h>
  37 #include <linux/major.h>
  38
  39 #include <linux/slab.h>
  40
  41 #include <linux/mm.h>
  42 #include <linux/pci.h>
  43 #include <linux/signal.h>
  44 #include <asm/io.h>
  45 #include <asm/pgtable.h>
  46 #include <asm/page.h>
  47 #include <linux/sched.h>
  48 #include <linux/types.h>
  49
  50 #include <linux/videodev.h>
  51 #include <asm/uaccess.h>
  52
  53 MODULE_DESCRIPTION("Philips SAA7114H video decoder driver");
  54 MODULE_AUTHOR("Maxim Yevtyushkin");
  55 MODULE_LICENSE("GPL");
  56
  57 #include <linux/i2c.h>
  58 #include <linux/i2c-dev.h>
  59
  60 #define I2C_NAME(x) (x)->name
  61
  62 #include <linux/video_decoder.h>
  63
  64 static int debug = 0;
  65 module_param(debug, int, 0);
  66 MODULE_PARM_DESC(debug, "Debug level (0-1)");
  67
  68 #define dprintk(num, format, args...) \
  69         do { \
  70                 if (debug >= num) \
  71                         printk(format, ##args); \
  72         } while (0)
  73
  74 /* ----------------------------------------------------------------------- */
  75
  76 struct saa7114 {
  77         unsigned char reg[0xf0 * 2];
  78
  79         int norm;
  80         int input;
  81         int enable;
  82         int bright;
  83         int contrast;
  84         int hue;
  85         int sat;
  86         int playback;
  87 };
  88
  89 #define   I2C_SAA7114        0x42
  90 #define   I2C_SAA7114A       0x40
  91
  92 #define   I2C_DELAY   10
  93
  94
  95 //#define SAA_7114_NTSC_HSYNC_START       (-3)
  96 //#define SAA_7114_NTSC_HSYNC_STOP        (-18)
  97
  98 #define SAA_7114_NTSC_HSYNC_START  (-17)
  99 #define SAA_7114_NTSC_HSYNC_STOP   (-32)
 100
 101 //#define SAA_7114_NTSC_HOFFSET           (5)
 102 #define SAA_7114_NTSC_HOFFSET           (6)
 103 #define SAA_7114_NTSC_VOFFSET           (10)
 104 #define SAA_7114_NTSC_WIDTH             (720)
 105 #define SAA_7114_NTSC_HEIGHT            (250)
 106
 107 #define SAA_7114_SECAM_HSYNC_START      (-17)
 108 #define SAA_7114_SECAM_HSYNC_STOP       (-32)
 109
 110 #define SAA_7114_SECAM_HOFFSET          (2)
 111 #define SAA_7114_SECAM_VOFFSET          (10)
 112 #define SAA_7114_SECAM_WIDTH            (720)
 113 #define SAA_7114_SECAM_HEIGHT           (300)
 114
 115 #define SAA_7114_PAL_HSYNC_START        (-17)
 116 #define SAA_7114_PAL_HSYNC_STOP         (-32)
 117
 118 #define SAA_7114_PAL_HOFFSET            (2)
 119 #define SAA_7114_PAL_VOFFSET            (10)
 120 #define SAA_7114_PAL_WIDTH              (720)
 121 #define SAA_7114_PAL_HEIGHT             (300)
 122
 123
 124
 125 #define SAA_7114_VERTICAL_CHROMA_OFFSET         0       //0x50504040
 126 #define SAA_7114_VERTICAL_LUMA_OFFSET           0
 127
 128 #define REG_ADDR(x) (((x) << 1) + 1)
 129 #define LOBYTE(x) ((unsigned char)((x) & 0xff))
 130 #define HIBYTE(x) ((unsigned char)(((x) >> 8) & 0xff))
 131 #define LOWORD(x) ((unsigned short int)((x) & 0xffff))
 132 #define HIWORD(x) ((unsigned short int)(((x) >> 16) & 0xffff))
 133
 134
 135 /* ----------------------------------------------------------------------- */
 136
 137 static inline int
 138 saa7114_write (struct i2c_client *client,
 139                u8                 reg,
 140                u8                 value)
 141 {
 142         /*struct saa7114 *decoder = i2c_get_clientdata(client);*/
 143
 144         /*decoder->reg[reg] = value;*/
 145         return i2c_smbus_write_byte_data(client, reg, value);
 146 }
 147
 148 static int
 149 saa7114_write_block (struct i2c_client *client,
 150                      const u8          *data,
 151                      unsigned int       len)
 152 {
 153         int ret = -1;
 154         u8 reg;
 155
 156         /* the saa7114 has an autoincrement function, use it if
 157          * the adapter understands raw I2C */
 158         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
 159                 /* do raw I2C, not smbus compatible */
 160                 /*struct saa7114 *decoder = i2c_get_clientdata(client);*/
 161                 struct i2c_msg msg;
 162                 u8 block_data[32];
 163
 164                 msg.addr = client->addr;
 165                 msg.flags = 0;
 166                 while (len >= 2) {
 167                         msg.buf = (char *) block_data;
 168                         msg.len = 0;
 169                         block_data[msg.len++] = reg = data[0];
 170                         do {
 171                                 block_data[msg.len++] =
 172                                     /*decoder->reg[reg++] =*/ data[1];
 173                                 len -= 2;
 174                                 data += 2;
 175                         } while (len >= 2 && data[0] == reg &&
 176                                  msg.len < 32);
 177                         if ((ret = i2c_transfer(client->adapter,
 178                                                 &msg, 1)) < 0)
 179                                 break;
 180                 }
 181         } else {
 182                 /* do some slow I2C emulation kind of thing */
 183                 while (len >= 2) {
 184                         reg = *data++;
 185                         if ((ret = saa7114_write(client, reg,
 186                                                  *data++)) < 0)
 187                                 break;
 188                         len -= 2;
 189                 }
 190         }
 191
 192         return ret;
 193 }
 194
 195 static inline int
 196 saa7114_read (struct i2c_client *client,
 197               u8                 reg)
 198 {
 199         return i2c_smbus_read_byte_data(client, reg);
 200 }
 201
 202 /* ----------------------------------------------------------------------- */
 203
 204 // initially set NTSC, composite
 205
 206
 207 static const unsigned char init[] = {
 208         0x00, 0x00,             /* 00 - ID byte , chip version,
 209                                  * read only */
 210         0x01, 0x08,             /* 01 - X,X,X,X, IDEL3 to IDEL0 -
 211                                  * horizontal increment delay,
 212                                  * recommended position */
 213         0x02, 0x00,             /* 02 - FUSE=3, GUDL=2, MODE=0 ;
 214                                  * input control */
 215         0x03, 0x10,             /* 03 - HLNRS=0, VBSL=1, WPOFF=0,
 216                                  * HOLDG=0, GAFIX=0, GAI1=256, GAI2=256 */
 217         0x04, 0x90,             /* 04 - GAI1=256 */
 218         0x05, 0x90,             /* 05 - GAI2=256 */
 219         0x06, SAA_7114_NTSC_HSYNC_START,        /* 06 - HSB: hsync start,
 220                                  * depends on the video standard */
 221         0x07, SAA_7114_NTSC_HSYNC_STOP, /* 07 - HSS: hsync stop, depends
 222                                  *on the video standard */
 223         0x08, 0xb8,             /* 08 - AUFD=1, FSEL=1, EXFIL=0, VTRC=1,
 224                                  * HPLL: free running in playback, locked
 225                                  * in capture, VNOI=0 */
 226         0x09, 0x80,             /* 09 - BYPS=0, PREF=0, BPSS=0, VBLB=0,
 227                                  * UPTCV=0, APER=1; depends from input */
 228         0x0a, 0x80,             /* 0a - BRIG=128 */
 229         0x0b, 0x44,             /* 0b - CONT=1.109 */
 230         0x0c, 0x40,             /* 0c - SATN=1.0 */
 231         0x0d, 0x00,             /* 0d - HUE=0 */
 232         0x0e, 0x84,             /* 0e - CDTO, CSTD2 to 0, DCVF, FCTC,
 233                                  * CCOMB; depends from video standard */
 234         0x0f, 0x24,             /* 0f - ACGC,CGAIN6 to CGAIN0; depends
 235                                  * from video standard */
 236         0x10, 0x03,             /* 10 - OFFU1 to 0, OFFV1 to 0, CHBW,
 237                                  * LCBW2 to 0 */
 238         0x11, 0x59,             /* 11 - COLO, RTP1, HEDL1 to 0, RTP0,
 239                                  * YDEL2 to 0 */
 240         0x12, 0xc9,             /* 12 - RT signal control RTSE13 to 10
 241                                  * and 03 to 00 */
 242         0x13, 0x80,             /* 13 - RT/X port output control  */
 243         0x14, 0x00,             /* 14 - analog, ADC, compatibility control */
 244         0x15, 0x00,             /* 15 - VGATE start FID change  */
 245         0x16, 0xfe,             /* 16 - VGATE stop */
 246         0x17, 0x00,             /* 17 - Misc., VGATE MSBs */
 247         0x18, 0x40,             /* RAWG */
 248         0x19, 0x80,             /* RAWO */
 249         0x1a, 0x00,
 250         0x1b, 0x00,
 251         0x1c, 0x00,
 252         0x1d, 0x00,
 253         0x1e, 0x00,
 254         0x1f, 0x00,             /* status byte, read only */
 255         0x20, 0x00,             /* video decoder reserved part */
 256         0x21, 0x00,
 257         0x22, 0x00,
 258         0x23, 0x00,
 259         0x24, 0x00,
 260         0x25, 0x00,
 261         0x26, 0x00,
 262         0x27, 0x00,
 263         0x28, 0x00,
 264         0x29, 0x00,
 265         0x2a, 0x00,
 266         0x2b, 0x00,
 267         0x2c, 0x00,
 268         0x2d, 0x00,
 269         0x2e, 0x00,
 270         0x2f, 0x00,
 271         0x30, 0xbc,             /* audio clock generator */
 272         0x31, 0xdf,
 273         0x32, 0x02,
 274         0x33, 0x00,
 275         0x34, 0xcd,
 276         0x35, 0xcc,
 277         0x36, 0x3a,
 278         0x37, 0x00,
 279         0x38, 0x03,
 280         0x39, 0x10,
 281         0x3a, 0x00,
 282         0x3b, 0x00,
 283         0x3c, 0x00,
 284         0x3d, 0x00,
 285         0x3e, 0x00,
 286         0x3f, 0x00,
 287         0x40, 0x00,             /* VBI data slicer */
 288         0x41, 0xff,
 289         0x42, 0xff,
 290         0x43, 0xff,
 291         0x44, 0xff,
 292         0x45, 0xff,
 293         0x46, 0xff,
 294         0x47, 0xff,
 295         0x48, 0xff,
 296         0x49, 0xff,
 297         0x4a, 0xff,
 298         0x4b, 0xff,
 299         0x4c, 0xff,
 300         0x4d, 0xff,
 301         0x4e, 0xff,
 302         0x4f, 0xff,
 303         0x50, 0xff,
 304         0x51, 0xff,
 305         0x52, 0xff,
 306         0x53, 0xff,
 307         0x54, 0xff,
 308         0x55, 0xff,
 309         0x56, 0xff,
 310         0x57, 0xff,
 311         0x58, 0x40,             // framing code
 312         0x59, 0x47,             // horizontal offset
 313         0x5a, 0x06,             // vertical offset
 314         0x5b, 0x83,             // field offset
 315         0x5c, 0x00,             // reserved
 316         0x5d, 0x3e,             // header and data
 317         0x5e, 0x00,             // sliced data
 318         0x5f, 0x00,             // reserved
 319         0x60, 0x00,             /* video decoder reserved part */
 320         0x61, 0x00,
 321         0x62, 0x00,
 322         0x63, 0x00,
 323         0x64, 0x00,
 324         0x65, 0x00,
 325         0x66, 0x00,
 326         0x67, 0x00,
 327         0x68, 0x00,
 328         0x69, 0x00,
 329         0x6a, 0x00,
 330         0x6b, 0x00,
 331         0x6c, 0x00,
 332         0x6d, 0x00,
 333         0x6e, 0x00,
 334         0x6f, 0x00,
 335         0x70, 0x00,             /* video decoder reserved part */
 336         0x71, 0x00,
 337         0x72, 0x00,
 338         0x73, 0x00,
 339         0x74, 0x00,
 340         0x75, 0x00,
 341         0x76, 0x00,
 342         0x77, 0x00,
 343         0x78, 0x00,
 344         0x79, 0x00,
 345         0x7a, 0x00,
 346         0x7b, 0x00,
 347         0x7c, 0x00,
 348         0x7d, 0x00,
 349         0x7e, 0x00,
 350         0x7f, 0x00,
 351         0x80, 0x00,             /* X-port, I-port and scaler */
 352         0x81, 0x00,
 353         0x82, 0x00,
 354         0x83, 0x00,
 355         0x84, 0xc5,
 356         0x85, 0x0d,             // hsync and vsync ?
 357         0x86, 0x40,
 358         0x87, 0x01,
 359         0x88, 0x00,
 360         0x89, 0x00,
 361         0x8a, 0x00,
 362         0x8b, 0x00,
 363         0x8c, 0x00,
 364         0x8d, 0x00,
 365         0x8e, 0x00,
 366         0x8f, 0x00,
 367         0x90, 0x03,             /* Task A definition           */
 368         0x91, 0x08,
 369         0x92, 0x00,
 370         0x93, 0x40,
 371         0x94, 0x00,             // window settings
 372         0x95, 0x00,
 373         0x96, 0x00,
 374         0x97, 0x00,
 375         0x98, 0x00,
 376         0x99, 0x00,
 377         0x9a, 0x00,
 378         0x9b, 0x00,
 379         0x9c, 0x00,
 380         0x9d, 0x00,
 381         0x9e, 0x00,
 382         0x9f, 0x00,
 383         0xa0, 0x01,             /* horizontal integer prescaling ratio */
 384         0xa1, 0x00,             /* horizontal prescaler accumulation
 385                                  * sequence length */
 386         0xa2, 0x00,             /* UV FIR filter, Y FIR filter, prescaler
 387                                  * DC gain */
 388         0xa3, 0x00,
 389         0xa4, 0x80,             // luminance brightness
 390         0xa5, 0x40,             // luminance gain
 391         0xa6, 0x40,             // chrominance saturation
 392         0xa7, 0x00,
 393         0xa8, 0x00,             // horizontal luminance scaling increment
 394         0xa9, 0x04,
 395         0xaa, 0x00,             // horizontal luminance phase offset
 396         0xab, 0x00,
 397         0xac, 0x00,             // horizontal chrominance scaling increment
 398         0xad, 0x02,
 399         0xae, 0x00,             // horizontal chrominance phase offset
 400         0xaf, 0x00,
 401         0xb0, 0x00,             // vertical luminance scaling increment
 402         0xb1, 0x04,
 403         0xb2, 0x00,             // vertical chrominance scaling increment
 404         0xb3, 0x04,
 405         0xb4, 0x00,
 406         0xb5, 0x00,
 407         0xb6, 0x00,
 408         0xb7, 0x00,
 409         0xb8, 0x00,
 410         0xb9, 0x00,
 411         0xba, 0x00,
 412         0xbb, 0x00,
 413         0xbc, 0x00,
 414         0xbd, 0x00,
 415         0xbe, 0x00,
 416         0xbf, 0x00,
 417         0xc0, 0x02,             // Task B definition
 418         0xc1, 0x08,
 419         0xc2, 0x00,
 420         0xc3, 0x40,
 421         0xc4, 0x00,             // window settings
 422         0xc5, 0x00,
 423         0xc6, 0x00,
 424         0xc7, 0x00,
 425         0xc8, 0x00,
 426         0xc9, 0x00,
 427         0xca, 0x00,
 428         0xcb, 0x00,
 429         0xcc, 0x00,
 430         0xcd, 0x00,
 431         0xce, 0x00,
 432         0xcf, 0x00,
 433         0xd0, 0x01,             // horizontal integer prescaling ratio
 434         0xd1, 0x00,             // horizontal prescaler accumulation sequence length
 435         0xd2, 0x00,             // UV FIR filter, Y FIR filter, prescaler DC gain
 436         0xd3, 0x00,
 437         0xd4, 0x80,             // luminance brightness
 438         0xd5, 0x40,             // luminance gain
 439         0xd6, 0x40,             // chrominance saturation
 440         0xd7, 0x00,
 441         0xd8, 0x00,             // horizontal luminance scaling increment
 442         0xd9, 0x04,
 443         0xda, 0x00,             // horizontal luminance phase offset
 444         0xdb, 0x00,
 445         0xdc, 0x00,             // horizontal chrominance scaling increment
 446         0xdd, 0x02,
 447         0xde, 0x00,             // horizontal chrominance phase offset
 448         0xdf, 0x00,
 449         0xe0, 0x00,             // vertical luminance scaling increment
 450         0xe1, 0x04,
 451         0xe2, 0x00,             // vertical chrominance scaling increment
 452         0xe3, 0x04,
 453         0xe4, 0x00,
 454         0xe5, 0x00,
 455         0xe6, 0x00,
 456         0xe7, 0x00,
 457         0xe8, 0x00,
 458         0xe9, 0x00,
 459         0xea, 0x00,
 460         0xeb, 0x00,
 461         0xec, 0x00,
 462         0xed, 0x00,
 463         0xee, 0x00,
 464         0xef, 0x00
 465 };
 466
 467 static int
 468 saa7114_command (struct i2c_client *client,
 469                  unsigned int       cmd,
 470                  void              *arg)
 471 {
 472         struct saa7114 *decoder = i2c_get_clientdata(client);
 473
 474         switch (cmd) {
 475
 476         case 0:
 477                 //dprintk(1, KERN_INFO "%s: writing init\n", I2C_NAME(client));
 478                 //saa7114_write_block(client, init, sizeof(init));
 479                 break;
 480
 481         case DECODER_DUMP:
 482         {
 483                 int i;
 484
 485                 dprintk(1, KERN_INFO "%s: decoder dump\n", I2C_NAME(client));
 486
 487                 for (i = 0; i < 32; i += 16) {
 488                         int j;
 489
 490                         printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i);
 491                         for (j = 0; j < 16; ++j) {
 492                                 printk(" %02x",
 493                                        saa7114_read(client, i + j));
 494                         }
 495                         printk("\n");
 496                 }
 497         }
 498                 break;
 499
 500         case DECODER_GET_CAPABILITIES:
 501         {
 502                 struct video_decoder_capability *cap = arg;
 503
 504                 dprintk(1, KERN_DEBUG "%s: decoder get capabilities\n",
 505                         I2C_NAME(client));
 506
 507                 cap->flags = VIDEO_DECODER_PAL |
 508                              VIDEO_DECODER_NTSC |
 509                              VIDEO_DECODER_AUTO |
 510                              VIDEO_DECODER_CCIR;
 511                 cap->inputs = 8;
 512                 cap->outputs = 1;
 513         }
 514                 break;
 515
 516         case DECODER_GET_STATUS:
 517         {
 518                 int *iarg = arg;
 519                 int status;
 520                 int res;
 521
 522                 status = saa7114_read(client, 0x1f);
 523
 524                 dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client),
 525                         status);
 526                 res = 0;
 527                 if ((status & (1 << 6)) == 0) {
 528                         res |= DECODER_STATUS_GOOD;
 529                 }
 530                 switch (decoder->norm) {
 531                 case VIDEO_MODE_NTSC:
 532                         res |= DECODER_STATUS_NTSC;
 533                         break;
 534                 case VIDEO_MODE_PAL:
 535                         res |= DECODER_STATUS_PAL;
 536                         break;
 537                 case VIDEO_MODE_SECAM:
 538                         res |= DECODER_STATUS_SECAM;
 539                         break;
 540                 default:
 541                 case VIDEO_MODE_AUTO:
 542                         if ((status & (1 << 5)) != 0) {
 543                                 res |= DECODER_STATUS_NTSC;
 544                         } else {
 545                                 res |= DECODER_STATUS_PAL;
 546                         }
 547                         break;
 548                 }
 549                 if ((status & (1 << 0)) != 0) {
 550                         res |= DECODER_STATUS_COLOR;
 551                 }
 552                 *iarg = res;
 553         }
 554                 break;
 555
 556         case DECODER_SET_NORM:
 557         {
 558                 int *iarg = arg;
 559
 560                 short int hoff = 0, voff = 0, w = 0, h = 0;
 561
 562                 dprintk(1, KERN_DEBUG "%s: decoder set norm ",
 563                         I2C_NAME(client));
 564                 switch (*iarg) {
 565
 566                 case VIDEO_MODE_NTSC:
 567                         dprintk(1, "NTSC\n");
 568                         decoder->reg[REG_ADDR(0x06)] =
 569                             SAA_7114_NTSC_HSYNC_START;
 570                         decoder->reg[REG_ADDR(0x07)] =
 571                             SAA_7114_NTSC_HSYNC_STOP;
 572
 573                         decoder->reg[REG_ADDR(0x08)] = decoder->playback ? 0x7c : 0xb8; // PLL free when playback, PLL close when capture
 574
 575                         decoder->reg[REG_ADDR(0x0e)] = 0x85;
 576                         decoder->reg[REG_ADDR(0x0f)] = 0x24;
 577
 578                         hoff = SAA_7114_NTSC_HOFFSET;
 579                         voff = SAA_7114_NTSC_VOFFSET;
 580                         w = SAA_7114_NTSC_WIDTH;
 581                         h = SAA_7114_NTSC_HEIGHT;
 582
 583                         break;
 584
 585                 case VIDEO_MODE_PAL:
 586                         dprintk(1, "PAL\n");
 587                         decoder->reg[REG_ADDR(0x06)] =
 588                             SAA_7114_PAL_HSYNC_START;
 589                         decoder->reg[REG_ADDR(0x07)] =
 590                             SAA_7114_PAL_HSYNC_STOP;
 591
 592                         decoder->reg[REG_ADDR(0x08)] = decoder->playback ? 0x7c : 0xb8; // PLL free when playback, PLL close when capture
 593
 594                         decoder->reg[REG_ADDR(0x0e)] = 0x81;
 595                         decoder->reg[REG_ADDR(0x0f)] = 0x24;
 596
 597                         hoff = SAA_7114_PAL_HOFFSET;
 598                         voff = SAA_7114_PAL_VOFFSET;
 599                         w = SAA_7114_PAL_WIDTH;
 600                         h = SAA_7114_PAL_HEIGHT;
 601
 602                         break;
 603
 604                 default:
 605                         dprintk(1, " Unknown video mode!!!\n");
 606                         return -EINVAL;
 607
 608                 }
 609
 610
 611                 decoder->reg[REG_ADDR(0x94)] = LOBYTE(hoff);    // hoffset low
 612                 decoder->reg[REG_ADDR(0x95)] = HIBYTE(hoff) & 0x0f;     // hoffset high
 613                 decoder->reg[REG_ADDR(0x96)] = LOBYTE(w);       // width low
 614                 decoder->reg[REG_ADDR(0x97)] = HIBYTE(w) & 0x0f;        // width high
 615                 decoder->reg[REG_ADDR(0x98)] = LOBYTE(voff);    // voffset low
 616                 decoder->reg[REG_ADDR(0x99)] = HIBYTE(voff) & 0x0f;     // voffset high
 617                 decoder->reg[REG_ADDR(0x9a)] = LOBYTE(h + 2);   // height low
 618                 decoder->reg[REG_ADDR(0x9b)] = HIBYTE(h + 2) & 0x0f;    // height high
 619                 decoder->reg[REG_ADDR(0x9c)] = LOBYTE(w);       // out width low
 620                 decoder->reg[REG_ADDR(0x9d)] = HIBYTE(w) & 0x0f;        // out width high
 621                 decoder->reg[REG_ADDR(0x9e)] = LOBYTE(h);       // out height low
 622                 decoder->reg[REG_ADDR(0x9f)] = HIBYTE(h) & 0x0f;        // out height high
 623
 624                 decoder->reg[REG_ADDR(0xc4)] = LOBYTE(hoff);    // hoffset low
 625                 decoder->reg[REG_ADDR(0xc5)] = HIBYTE(hoff) & 0x0f;     // hoffset high
 626                 decoder->reg[REG_ADDR(0xc6)] = LOBYTE(w);       // width low
 627                 decoder->reg[REG_ADDR(0xc7)] = HIBYTE(w) & 0x0f;        // width high
 628                 decoder->reg[REG_ADDR(0xc8)] = LOBYTE(voff);    // voffset low
 629                 decoder->reg[REG_ADDR(0xc9)] = HIBYTE(voff) & 0x0f;     // voffset high
 630                 decoder->reg[REG_ADDR(0xca)] = LOBYTE(h + 2);   // height low
 631                 decoder->reg[REG_ADDR(0xcb)] = HIBYTE(h + 2) & 0x0f;    // height high
 632                 decoder->reg[REG_ADDR(0xcc)] = LOBYTE(w);       // out width low
 633                 decoder->reg[REG_ADDR(0xcd)] = HIBYTE(w) & 0x0f;        // out width high
 634                 decoder->reg[REG_ADDR(0xce)] = LOBYTE(h);       // out height low
 635                 decoder->reg[REG_ADDR(0xcf)] = HIBYTE(h) & 0x0f;        // out height high
 636
 637
 638                 saa7114_write(client, 0x80, 0x06);      // i-port and scaler back end clock selection, task A&B off
 639                 saa7114_write(client, 0x88, 0xd8);      // sw reset scaler
 640                 saa7114_write(client, 0x88, 0xf8);      // sw reset scaler release
 641
 642                 saa7114_write_block(client, decoder->reg + (0x06 << 1),
 643                                     3 << 1);
 644                 saa7114_write_block(client, decoder->reg + (0x0e << 1),
 645                                     2 << 1);
 646                 saa7114_write_block(client, decoder->reg + (0x5a << 1),
 647                                     2 << 1);
 648
 649                 saa7114_write_block(client, decoder->reg + (0x94 << 1),
 650                                     (0x9f + 1 - 0x94) << 1);
 651                 saa7114_write_block(client, decoder->reg + (0xc4 << 1),
 652                                     (0xcf + 1 - 0xc4) << 1);
 653
 654                 saa7114_write(client, 0x88, 0xd8);      // sw reset scaler
 655                 saa7114_write(client, 0x88, 0xf8);      // sw reset scaler release
 656                 saa7114_write(client, 0x80, 0x36);      // i-port and scaler back end clock selection
 657
 658                 decoder->norm = *iarg;
 659         }
 660                 break;
 661
 662         case DECODER_SET_INPUT:
 663         {
 664                 int *iarg = arg;
 665
 666                 dprintk(1, KERN_DEBUG "%s: decoder set input (%d)\n",
 667                         I2C_NAME(client), *iarg);
 668                 if (*iarg < 0 || *iarg > 7) {
 669                         return -EINVAL;
 670                 }
 671
 672                 if (decoder->input != *iarg) {
 673                         dprintk(1, KERN_DEBUG "%s: now setting %s input\n",
 674                                 I2C_NAME(client),
 675                                 *iarg >= 6 ? "S-Video" : "Composite");
 676                         decoder->input = *iarg;
 677
 678                         /* select mode */
 679                         decoder->reg[REG_ADDR(0x02)] =
 680                             (decoder->
 681                              reg[REG_ADDR(0x02)] & 0xf0) | (decoder->
 682                                                             input <
 683                                                             6 ? 0x0 : 0x9);
 684                         saa7114_write(client, 0x02,
 685                                       decoder->reg[REG_ADDR(0x02)]);
 686
 687                         /* bypass chrominance trap for modes 6..9 */
 688                         decoder->reg[REG_ADDR(0x09)] =
 689                             (decoder->
 690                              reg[REG_ADDR(0x09)] & 0x7f) | (decoder->
 691                                                             input <
 692                                                             6 ? 0x0 :
 693                                                             0x80);
 694                         saa7114_write(client, 0x09,
 695                                       decoder->reg[REG_ADDR(0x09)]);
 696
 697                         decoder->reg[REG_ADDR(0x0e)] =
 698                             decoder->input <
 699                             6 ? decoder->
 700                             reg[REG_ADDR(0x0e)] | 1 : decoder->
 701                             reg[REG_ADDR(0x0e)] & ~1;
 702                         saa7114_write(client, 0x0e,
 703                                       decoder->reg[REG_ADDR(0x0e)]);
 704                 }
 705         }
 706                 break;
 707
 708         case DECODER_SET_OUTPUT:
 709         {
 710                 int *iarg = arg;
 711
 712                 dprintk(1, KERN_DEBUG "%s: decoder set output\n",
 713                         I2C_NAME(client));
 714
 715                 /* not much choice of outputs */
 716                 if (*iarg != 0) {
 717                         return -EINVAL;
 718                 }
 719         }
 720                 break;
 721
 722         case DECODER_ENABLE_OUTPUT:
 723         {
 724                 int *iarg = arg;
 725                 int enable = (*iarg != 0);
 726
 727                 dprintk(1, KERN_DEBUG "%s: decoder %s output\n",
 728                         I2C_NAME(client), enable ? "enable" : "disable");
 729
 730                 decoder->playback = !enable;
 731
 732                 if (decoder->enable != enable) {
 733                         decoder->enable = enable;
 734
 735                         /* RJ: If output should be disabled (for
 736                          * playing videos), we also need a open PLL.
 737                          * The input is set to 0 (where no input
 738                          * source is connected), although this
 739                          * is not necessary.
 740                          *
 741                          * If output should be enabled, we have to
 742                          * reverse the above.
 743                          */
 744
 745                         if (decoder->enable) {
 746                                 decoder->reg[REG_ADDR(0x08)] = 0xb8;
 747                                 decoder->reg[REG_ADDR(0x12)] = 0xc9;
 748                                 decoder->reg[REG_ADDR(0x13)] = 0x80;
 749                                 decoder->reg[REG_ADDR(0x87)] = 0x01;
 750                         } else {
 751                                 decoder->reg[REG_ADDR(0x08)] = 0x7c;
 752                                 decoder->reg[REG_ADDR(0x12)] = 0x00;
 753                                 decoder->reg[REG_ADDR(0x13)] = 0x00;
 754                                 decoder->reg[REG_ADDR(0x87)] = 0x00;
 755                         }
 756
 757                         saa7114_write_block(client,
 758                                             decoder->reg + (0x12 << 1),
 759                                             2 << 1);
 760                         saa7114_write(client, 0x08,
 761                                       decoder->reg[REG_ADDR(0x08)]);
 762                         saa7114_write(client, 0x87,
 763                                       decoder->reg[REG_ADDR(0x87)]);
 764                         saa7114_write(client, 0x88, 0xd8);      // sw reset scaler
 765                         saa7114_write(client, 0x88, 0xf8);      // sw reset scaler release
 766                         saa7114_write(client, 0x80, 0x36);
 767
 768                 }
 769         }
 770                 break;
 771
 772         case DECODER_SET_PICTURE:
 773         {
 774                 struct video_picture *pic = arg;
 775
 776                 dprintk(1,
 777                         KERN_DEBUG
 778                         "%s: decoder set picture bright=%d contrast=%d saturation=%d hue=%d\n",
 779                         I2C_NAME(client), pic->brightness, pic->contrast,
 780                         pic->colour, pic->hue);
 781
 782                 if (decoder->bright != pic->brightness) {
 783                         /* We want 0 to 255 we get 0-65535 */
 784                         decoder->bright = pic->brightness;
 785                         saa7114_write(client, 0x0a, decoder->bright >> 8);
 786                 }
 787                 if (decoder->contrast != pic->contrast) {
 788                         /* We want 0 to 127 we get 0-65535 */
 789                         decoder->contrast = pic->contrast;
 790                         saa7114_write(client, 0x0b,
 791                                       decoder->contrast >> 9);
 792                 }
 793                 if (decoder->sat != pic->colour) {
 794                         /* We want 0 to 127 we get 0-65535 */
 795                         decoder->sat = pic->colour;
 796                         saa7114_write(client, 0x0c, decoder->sat >> 9);
 797                 }
 798                 if (decoder->hue != pic->hue) {
 799                         /* We want -128 to 127 we get 0-65535 */
 800                         decoder->hue = pic->hue;
 801                         saa7114_write(client, 0x0d,
 802                                       (decoder->hue - 32768) >> 8);
 803                 }
 804         }
 805                 break;
 806
 807         default:
 808                 return -EINVAL;
 809         }
 810
 811         return 0;
 812 }
 813
 814 /* ----------------------------------------------------------------------- */
 815
 816 /*
 817  * Generic i2c probe
 818  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 819  */
 820 static unsigned short normal_i2c[] =
 821     { I2C_SAA7114 >> 1, I2C_SAA7114A >> 1, I2C_CLIENT_END };
 822
 823 static unsigned short ignore = I2C_CLIENT_END;
 824
 825 static struct i2c_client_address_data addr_data = {
 826         .normal_i2c             = normal_i2c,
 827         .probe                  = &ignore,
 828         .ignore                 = &ignore,
 829 };
 830
 831 static struct i2c_driver i2c_driver_saa7114;
 832
 833 static int
 834 saa7114_detect_client (struct i2c_adapter *adapter,
 835                        int                 address,
 836                        int                 kind)
 837 {
 838         int i, err[30];
 839         short int hoff = SAA_7114_NTSC_HOFFSET;
 840         short int voff = SAA_7114_NTSC_VOFFSET;
 841         short int w = SAA_7114_NTSC_WIDTH;
 842         short int h = SAA_7114_NTSC_HEIGHT;
 843         struct i2c_client *client;
 844         struct saa7114 *decoder;
 845
 846         dprintk(1,
 847                 KERN_INFO
 848                 "saa7114.c: detecting saa7114 client on address 0x%x\n",
 849                 address << 1);
 850
 851         /* Check if the adapter supports the needed features */
 852         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 853                 return 0;
 854
 855         client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 856         if (client == 0)
 857                 return -ENOMEM;
 858         client->addr = address;
 859         client->adapter = adapter;
 860         client->driver = &i2c_driver_saa7114;
 861         strlcpy(I2C_NAME(client), "saa7114", sizeof(I2C_NAME(client)));
 862
 863         decoder = kzalloc(sizeof(struct saa7114), GFP_KERNEL);
 864         if (decoder == NULL) {
 865                 kfree(client);
 866                 return -ENOMEM;
 867         }
 868         decoder->norm = VIDEO_MODE_NTSC;
 869         decoder->input = -1;
 870         decoder->enable = 1;
 871         decoder->bright = 32768;
 872         decoder->contrast = 32768;
 873         decoder->hue = 32768;
 874         decoder->sat = 32768;
 875         decoder->playback = 0;  // initially capture mode useda
 876         i2c_set_clientdata(client, decoder);
 877
 878         memcpy(decoder->reg, init, sizeof(init));
 879
 880         decoder->reg[REG_ADDR(0x94)] = LOBYTE(hoff);    // hoffset low
 881         decoder->reg[REG_ADDR(0x95)] = HIBYTE(hoff) & 0x0f;     // hoffset high
 882         decoder->reg[REG_ADDR(0x96)] = LOBYTE(w);       // width low
 883         decoder->reg[REG_ADDR(0x97)] = HIBYTE(w) & 0x0f;        // width high
 884         decoder->reg[REG_ADDR(0x98)] = LOBYTE(voff);    // voffset low
 885         decoder->reg[REG_ADDR(0x99)] = HIBYTE(voff) & 0x0f;     // voffset high
 886         decoder->reg[REG_ADDR(0x9a)] = LOBYTE(h + 2);   // height low
 887         decoder->reg[REG_ADDR(0x9b)] = HIBYTE(h + 2) & 0x0f;    // height high
 888         decoder->reg[REG_ADDR(0x9c)] = LOBYTE(w);       // out width low
 889         decoder->reg[REG_ADDR(0x9d)] = HIBYTE(w) & 0x0f;        // out width high
 890         decoder->reg[REG_ADDR(0x9e)] = LOBYTE(h);       // out height low
 891         decoder->reg[REG_ADDR(0x9f)] = HIBYTE(h) & 0x0f;        // out height high
 892
 893         decoder->reg[REG_ADDR(0xc4)] = LOBYTE(hoff);    // hoffset low
 894         decoder->reg[REG_ADDR(0xc5)] = HIBYTE(hoff) & 0x0f;     // hoffset high
 895         decoder->reg[REG_ADDR(0xc6)] = LOBYTE(w);       // width low
 896         decoder->reg[REG_ADDR(0xc7)] = HIBYTE(w) & 0x0f;        // width high
 897         decoder->reg[REG_ADDR(0xc8)] = LOBYTE(voff);    // voffset low
 898         decoder->reg[REG_ADDR(0xc9)] = HIBYTE(voff) & 0x0f;     // voffset high
 899         decoder->reg[REG_ADDR(0xca)] = LOBYTE(h + 2);   // height low
 900         decoder->reg[REG_ADDR(0xcb)] = HIBYTE(h + 2) & 0x0f;    // height high
 901         decoder->reg[REG_ADDR(0xcc)] = LOBYTE(w);       // out width low
 902         decoder->reg[REG_ADDR(0xcd)] = HIBYTE(w) & 0x0f;        // out width high
 903         decoder->reg[REG_ADDR(0xce)] = LOBYTE(h);       // out height low
 904         decoder->reg[REG_ADDR(0xcf)] = HIBYTE(h) & 0x0f;        // out height high
 905
 906         decoder->reg[REG_ADDR(0xb8)] =
 907             LOBYTE(LOWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
 908         decoder->reg[REG_ADDR(0xb9)] =
 909             HIBYTE(LOWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
 910         decoder->reg[REG_ADDR(0xba)] =
 911             LOBYTE(HIWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
 912         decoder->reg[REG_ADDR(0xbb)] =
 913             HIBYTE(HIWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
 914
 915         decoder->reg[REG_ADDR(0xbc)] =
 916             LOBYTE(LOWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
 917         decoder->reg[REG_ADDR(0xbd)] =
 918             HIBYTE(LOWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
 919         decoder->reg[REG_ADDR(0xbe)] =
 920             LOBYTE(HIWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
 921         decoder->reg[REG_ADDR(0xbf)] =
 922             HIBYTE(HIWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
 923
 924         decoder->reg[REG_ADDR(0xe8)] =
 925             LOBYTE(LOWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
 926         decoder->reg[REG_ADDR(0xe9)] =
 927             HIBYTE(LOWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
 928         decoder->reg[REG_ADDR(0xea)] =
 929             LOBYTE(HIWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
 930         decoder->reg[REG_ADDR(0xeb)] =
 931             HIBYTE(HIWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
 932
 933         decoder->reg[REG_ADDR(0xec)] =
 934             LOBYTE(LOWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
 935         decoder->reg[REG_ADDR(0xed)] =
 936             HIBYTE(LOWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
 937         decoder->reg[REG_ADDR(0xee)] =
 938             LOBYTE(HIWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
 939         decoder->reg[REG_ADDR(0xef)] =
 940             HIBYTE(HIWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
 941
 942
 943         decoder->reg[REG_ADDR(0x13)] = 0x80;    // RTC0 on
 944         decoder->reg[REG_ADDR(0x87)] = 0x01;    // I-Port
 945         decoder->reg[REG_ADDR(0x12)] = 0xc9;    // RTS0
 946
 947         decoder->reg[REG_ADDR(0x02)] = 0xc0;    // set composite1 input, aveasy
 948         decoder->reg[REG_ADDR(0x09)] = 0x00;    // chrominance trap
 949         decoder->reg[REG_ADDR(0x0e)] |= 1;      // combfilter on
 950
 951
 952         dprintk(1, KERN_DEBUG "%s_attach: starting decoder init\n",
 953                 I2C_NAME(client));
 954
 955         err[0] =
 956             saa7114_write_block(client, decoder->reg + (0x20 << 1),
 957                                 0x10 << 1);
 958         err[1] =
 959             saa7114_write_block(client, decoder->reg + (0x30 << 1),
 960                                 0x10 << 1);
 961         err[2] =
 962             saa7114_write_block(client, decoder->reg + (0x63 << 1),
 963                                 (0x7f + 1 - 0x63) << 1);
 964         err[3] =
 965             saa7114_write_block(client, decoder->reg + (0x89 << 1),
 966                                 6 << 1);
 967         err[4] =
 968             saa7114_write_block(client, decoder->reg + (0xb8 << 1),
 969                                 8 << 1);
 970         err[5] =
 971             saa7114_write_block(client, decoder->reg + (0xe8 << 1),
 972                                 8 << 1);
 973
 974
 975         for (i = 0; i <= 5; i++) {
 976                 if (err[i] < 0) {
 977                         dprintk(1,
 978                                 KERN_ERR
 979                                 "%s_attach: init error %d at stage %d, leaving attach.\n",
 980                                 I2C_NAME(client), i, err[i]);
 981                         kfree(decoder);
 982                         kfree(client);
 983                         return 0;
 984                 }
 985         }
 986
 987         for (i = 6; i < 8; i++) {
 988                 dprintk(1,
 989                         KERN_DEBUG
 990                         "%s_attach: reg[0x%02x] = 0x%02x (0x%02x)\n",
 991                         I2C_NAME(client), i, saa7114_read(client, i),
 992                         decoder->reg[REG_ADDR(i)]);
 993         }
 994
 995         dprintk(1,
 996                 KERN_DEBUG
 997                 "%s_attach: performing decoder reset sequence\n",
 998                 I2C_NAME(client));
 999
1000         err[6] = saa7114_write(client, 0x80, 0x06);     // i-port and scaler backend clock selection, task A&B off
1001         err[7] = saa7114_write(client, 0x88, 0xd8);     // sw reset scaler
1002         err[8] = saa7114_write(client, 0x88, 0xf8);     // sw reset scaler release
1003
1004         for (i = 6; i <= 8; i++) {
1005                 if (err[i] < 0) {
1006                         dprintk(1,
1007                                 KERN_ERR
1008                                 "%s_attach: init error %d at stage %d, leaving attach.\n",
1009                                 I2C_NAME(client), i, err[i]);
1010                         kfree(decoder);
1011                         kfree(client);
1012                         return 0;
1013                 }
1014         }
1015
1016         dprintk(1, KERN_INFO "%s_attach: performing the rest of init\n",
1017                 I2C_NAME(client));
1018
1019
1020         err[9] = saa7114_write(client, 0x01, decoder->reg[REG_ADDR(0x01)]);
1021         err[10] = saa7114_write_block(client, decoder->reg + (0x03 << 1), (0x1e + 1 - 0x03) << 1);      // big seq
1022         err[11] = saa7114_write_block(client, decoder->reg + (0x40 << 1), (0x5f + 1 - 0x40) << 1);      // slicer
1023         err[12] = saa7114_write_block(client, decoder->reg + (0x81 << 1), 2 << 1);      // ?
1024         err[13] = saa7114_write_block(client, decoder->reg + (0x83 << 1), 5 << 1);      // ?
1025         err[14] = saa7114_write_block(client, decoder->reg + (0x90 << 1), 4 << 1);      // Task A
1026         err[15] =
1027             saa7114_write_block(client, decoder->reg + (0x94 << 1),
1028                                 12 << 1);
1029         err[16] =
1030             saa7114_write_block(client, decoder->reg + (0xa0 << 1),
1031                                 8 << 1);
1032         err[17] =
1033             saa7114_write_block(client, decoder->reg + (0xa8 << 1),
1034                                 8 << 1);
1035         err[18] =
1036             saa7114_write_block(client, decoder->reg + (0xb0 << 1),
1037                                 8 << 1);
1038         err[19] = saa7114_write_block(client, decoder->reg + (0xc0 << 1), 4 << 1);      // Task B
1039         err[15] =
1040             saa7114_write_block(client, decoder->reg + (0xc4 << 1),
1041                                 12 << 1);
1042         err[16] =
1043             saa7114_write_block(client, decoder->reg + (0xd0 << 1),
1044                                 8 << 1);
1045         err[17] =
1046             saa7114_write_block(client, decoder->reg + (0xd8 << 1),
1047                                 8 << 1);
1048         err[18] =
1049             saa7114_write_block(client, decoder->reg + (0xe0 << 1),
1050                                 8 << 1);
1051
1052         for (i = 9; i <= 18; i++) {
1053                 if (err[i] < 0) {
1054                         dprintk(1,
1055                                 KERN_ERR
1056                                 "%s_attach: init error %d at stage %d, leaving attach.\n",
1057                                 I2C_NAME(client), i, err[i]);
1058                         kfree(decoder);
1059                         kfree(client);
1060                         return 0;
1061                 }
1062         }
1063
1064
1065         for (i = 6; i < 8; i++) {
1066                 dprintk(1,
1067                         KERN_DEBUG
1068                         "%s_attach: reg[0x%02x] = 0x%02x (0x%02x)\n",
1069                         I2C_NAME(client), i, saa7114_read(client, i),
1070                         decoder->reg[REG_ADDR(i)]);
1071         }
1072
1073
1074         for (i = 0x11; i <= 0x13; i++) {
1075                 dprintk(1,
1076                         KERN_DEBUG
1077                         "%s_attach: reg[0x%02x] = 0x%02x (0x%02x)\n",
1078                         I2C_NAME(client), i, saa7114_read(client, i),
1079                         decoder->reg[REG_ADDR(i)]);
1080         }
1081
1082
1083         dprintk(1, KERN_DEBUG "%s_attach: setting video input\n",
1084                 I2C_NAME(client));
1085
1086         err[19] =
1087             saa7114_write(client, 0x02, decoder->reg[REG_ADDR(0x02)]);
1088         err[20] =
1089             saa7114_write(client, 0x09, decoder->reg[REG_ADDR(0x09)]);
1090         err[21] =
1091             saa7114_write(client, 0x0e, decoder->reg[REG_ADDR(0x0e)]);
1092
1093         for (i = 19; i <= 21; i++) {
1094                 if (err[i] < 0) {
1095                         dprintk(1,
1096                                 KERN_ERR
1097                                 "%s_attach: init error %d at stage %d, leaving attach.\n",
1098                                 I2C_NAME(client), i, err[i]);
1099                         kfree(decoder);
1100                         kfree(client);
1101                         return 0;
1102                 }
1103         }
1104
1105         dprintk(1,
1106                 KERN_DEBUG
1107                 "%s_attach: performing decoder reset sequence\n",
1108                 I2C_NAME(client));
1109
1110         err[22] = saa7114_write(client, 0x88, 0xd8);    // sw reset scaler
1111         err[23] = saa7114_write(client, 0x88, 0xf8);    // sw reset scaler release
1112         err[24] = saa7114_write(client, 0x80, 0x36);    // i-port and scaler backend clock selection, task A&B off
1113
1114
1115         for (i = 22; i <= 24; i++) {
1116                 if (err[i] < 0) {
1117                         dprintk(1,
1118                                 KERN_ERR
1119                                 "%s_attach: init error %d at stage %d, leaving attach.\n",
1120                                 I2C_NAME(client), i, err[i]);
1121                         kfree(decoder);
1122                         kfree(client);
1123                         return 0;
1124                 }
1125         }
1126
1127         err[25] = saa7114_write(client, 0x06, init[REG_ADDR(0x06)]);
1128         err[26] = saa7114_write(client, 0x07, init[REG_ADDR(0x07)]);
1129         err[27] = saa7114_write(client, 0x10, init[REG_ADDR(0x10)]);
1130
1131         dprintk(1,
1132                 KERN_INFO
1133                 "%s_attach: chip version %x, decoder status 0x%02x\n",
1134                 I2C_NAME(client), saa7114_read(client, 0x00) >> 4,
1135                 saa7114_read(client, 0x1f));
1136         dprintk(1,
1137                 KERN_DEBUG
1138                 "%s_attach: power save control: 0x%02x, scaler status: 0x%02x\n",
1139                 I2C_NAME(client), saa7114_read(client, 0x88),
1140                 saa7114_read(client, 0x8f));
1141
1142
1143         for (i = 0x94; i < 0x96; i++) {
1144                 dprintk(1,
1145                         KERN_DEBUG
1146                         "%s_attach: reg[0x%02x] = 0x%02x (0x%02x)\n",
1147                         I2C_NAME(client), i, saa7114_read(client, i),
1148                         decoder->reg[REG_ADDR(i)]);
1149         }
1150
1151         i = i2c_attach_client(client);
1152         if (i) {
1153                 kfree(client);
1154                 kfree(decoder);
1155                 return i;
1156         }
1157
1158         //i = saa7114_write_block(client, init, sizeof(init));
1159         i = 0;
1160         if (i < 0) {
1161                 dprintk(1, KERN_ERR "%s_attach error: init status %d\n",
1162                         I2C_NAME(client), i);
1163         } else {
1164                 dprintk(1,
1165                         KERN_INFO
1166                         "%s_attach: chip version %x at address 0x%x\n",
1167                         I2C_NAME(client), saa7114_read(client, 0x00) >> 4,
1168                         client->addr << 1);
1169         }
1170
1171         return 0;
1172 }
1173
1174 static int
1175 saa7114_attach_adapter (struct i2c_adapter *adapter)
1176 {
1177         dprintk(1,
1178                 KERN_INFO
1179                 "saa7114.c: starting probe for adapter %s (0x%x)\n",
1180                 I2C_NAME(adapter), adapter->id);
1181         return i2c_probe(adapter, &addr_data, &saa7114_detect_client);
1182 }
1183
1184 static int
1185 saa7114_detach_client (struct i2c_client *client)
1186 {
1187         struct saa7114 *decoder = i2c_get_clientdata(client);
1188         int err;
1189
1190         err = i2c_detach_client(client);
1191         if (err) {
1192                 return err;
1193         }
1194
1195         kfree(decoder);
1196         kfree(client);
1197
1198         return 0;
1199 }
1200
1201 /* ----------------------------------------------------------------------- */
1202
1203 static struct i2c_driver i2c_driver_saa7114 = {
1204         .driver = {
1205                 .name = "saa7114",
1206         },
1207
1208         .id = I2C_DRIVERID_SAA7114,
1209
1210         .attach_adapter = saa7114_attach_adapter,
1211         .detach_client = saa7114_detach_client,
1212         .command = saa7114_command,
1213 };
1214
1215 static int __init
1216 saa7114_init (void)
1217 {
1218         return i2c_add_driver(&i2c_driver_saa7114);
1219 }
1220
1221 static void __exit
1222 saa7114_exit (void)
1223 {
1224         i2c_del_driver(&i2c_driver_saa7114);
1225 }
1226
1227 module_init(saa7114_init);
1228 module_exit(saa7114_exit);