git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/vpx3220.c

   1 /*
   2  * vpx3220a, vpx3216b & vpx3214c video decoder driver version 0.0.1
   3  *
   4  * Copyright (C) 2001 Laurent Pinchart <lpinchart@freegates.be>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include <linux/module.h>
  22 #include <linux/init.h>
  23 #include <linux/delay.h>
  24 #include <linux/types.h>
  25 #include <linux/slab.h>
  26
  27 #include <linux/byteorder/swab.h>
  28
  29 #include <asm/io.h>
  30 #include <asm/uaccess.h>
  31
  32 #include <linux/i2c.h>
  33 #include <linux/i2c-dev.h>
  34
  35 #define I2C_NAME(x) (x)->name
  36
  37 #include <linux/videodev.h>
  38 #include <linux/video_decoder.h>
  39
  40 #define I2C_VPX3220        0x86
  41 #define VPX3220_DEBUG   KERN_DEBUG "vpx3220: "
  42
  43 static int debug = 0;
  44 module_param(debug, int, 0);
  45 MODULE_PARM_DESC(debug, "Debug level (0-1)");
  46
  47 #define dprintk(num, format, args...) \
  48         do { \
  49                 if (debug >= num) \
  50                         printk(format, ##args); \
  51         } while (0)
  52
  53 #define VPX_TIMEOUT_COUNT  10
  54
  55 /* ----------------------------------------------------------------------- */
  56
  57 struct vpx3220 {
  58         unsigned char reg[255];
  59
  60         int norm;
  61         int input;
  62         int enable;
  63         int bright;
  64         int contrast;
  65         int hue;
  66         int sat;
  67 };
  68
  69 static char *inputs[] = { "internal", "composite", "svideo" };
  70
  71 /* ----------------------------------------------------------------------- */
  72 static inline int
  73 vpx3220_write (struct i2c_client *client,
  74                u8                 reg,
  75                u8                 value)
  76 {
  77         struct vpx3220 *decoder = i2c_get_clientdata(client);
  78
  79         decoder->reg[reg] = value;
  80         return i2c_smbus_write_byte_data(client, reg, value);
  81 }
  82
  83 static inline int
  84 vpx3220_read (struct i2c_client *client,
  85               u8                 reg)
  86 {
  87         return i2c_smbus_read_byte_data(client, reg);
  88 }
  89
  90 static int
  91 vpx3220_fp_status (struct i2c_client *client)
  92 {
  93         unsigned char status;
  94         unsigned int i;
  95
  96         for (i = 0; i < VPX_TIMEOUT_COUNT; i++) {
  97                 status = vpx3220_read(client, 0x29);
  98
  99                 if (!(status & 4))
 100                         return 0;
 101
 102                 udelay(10);
 103
 104                 if (need_resched())
 105                         cond_resched();
 106         }
 107
 108         return -1;
 109 }
 110
 111 static int
 112 vpx3220_fp_write (struct i2c_client *client,
 113                   u8                 fpaddr,
 114                   u16                data)
 115 {
 116         /* Write the 16-bit address to the FPWR register */
 117         if (i2c_smbus_write_word_data(client, 0x27, swab16(fpaddr)) == -1) {
 118                 dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
 119                 return -1;
 120         }
 121
 122         if (vpx3220_fp_status(client) < 0)
 123                 return -1;
 124
 125         /* Write the 16-bit data to the FPDAT register */
 126         if (i2c_smbus_write_word_data(client, 0x28, swab16(data)) == -1) {
 127                 dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
 128                 return -1;
 129         }
 130
 131         return 0;
 132 }
 133
 134 static u16
 135 vpx3220_fp_read (struct i2c_client *client,
 136                  u16                fpaddr)
 137 {
 138         s16 data;
 139
 140         /* Write the 16-bit address to the FPRD register */
 141         if (i2c_smbus_write_word_data(client, 0x26, swab16(fpaddr)) == -1) {
 142                 dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
 143                 return -1;
 144         }
 145
 146         if (vpx3220_fp_status(client) < 0)
 147                 return -1;
 148
 149         /* Read the 16-bit data from the FPDAT register */
 150         data = i2c_smbus_read_word_data(client, 0x28);
 151         if (data == -1) {
 152                 dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
 153                 return -1;
 154         }
 155
 156         return swab16(data);
 157 }
 158
 159 static int
 160 vpx3220_write_block (struct i2c_client *client,
 161                      const u8          *data,
 162                      unsigned int       len)
 163 {
 164         u8 reg;
 165         int ret = -1;
 166
 167         while (len >= 2) {
 168                 reg = *data++;
 169                 if ((ret =
 170                      vpx3220_write(client, reg, *data++)) < 0)
 171                         break;
 172                 len -= 2;
 173         }
 174
 175         return ret;
 176 }
 177
 178 static int
 179 vpx3220_write_fp_block (struct i2c_client *client,
 180                         const u16         *data,
 181                         unsigned int       len)
 182 {
 183         u8 reg;
 184         int ret = 0;
 185
 186         while (len > 1) {
 187                 reg = *data++;
 188                 ret |= vpx3220_fp_write(client, reg, *data++);
 189                 len -= 2;
 190         }
 191
 192         return ret;
 193 }
 194
 195 /* ---------------------------------------------------------------------- */
 196
 197 static const unsigned short init_ntsc[] = {
 198         0x1c, 0x00,             /* NTSC tint angle */
 199         0x88, 17,               /* Window 1 vertical */
 200         0x89, 240,              /* Vertical lines in */
 201         0x8a, 240,              /* Vertical lines out */
 202         0x8b, 000,              /* Horizontal begin */
 203         0x8c, 640,              /* Horizontal length */
 204         0x8d, 640,              /* Number of pixels */
 205         0x8f, 0xc00,            /* Disable window 2 */
 206         0xf0, 0x173,            /* 13.5 MHz transport, Forced
 207                                  * mode, latch windows */
 208         0xf2, 0x13,             /* NTSC M, composite input */
 209         0xe7, 0x1e1,            /* Enable vertical standard
 210                                  * locking @ 240 lines */
 211 };
 212
 213 static const unsigned short init_pal[] = {
 214         0x88, 23,               /* Window 1 vertical begin */
 215         0x89, 288 + 16,         /* Vertical lines in (16 lines
 216                                  * skipped by the VFE) */
 217         0x8a, 288 + 16,         /* Vertical lines out (16 lines
 218                                  * skipped by the VFE) */
 219         0x8b, 16,               /* Horizontal begin */
 220         0x8c, 768,              /* Horizontal length */
 221         0x8d, 784,              /* Number of pixels
 222                                  * Must be >= Horizontal begin + Horizontal length */
 223         0x8f, 0xc00,            /* Disable window 2 */
 224         0xf0, 0x177,            /* 13.5 MHz transport, Forced
 225                                  * mode, latch windows */
 226         0xf2, 0x3d1,            /* PAL B,G,H,I, composite input */
 227         0xe7, 0x261,            /* PAL/SECAM set to 288 + 16 lines
 228                                  * change to 0x241 for 288 lines */
 229 };
 230
 231 static const unsigned short init_secam[] = {
 232         0x88, 23  - 16,         /* Window 1 vertical begin */
 233         0x89, 288 + 16,         /* Vertical lines in (16 lines
 234                                  * skipped by the VFE) */
 235         0x8a, 288 + 16,         /* Vertical lines out (16 lines
 236                                  * skipped by the VFE) */
 237         0x8b, 16,               /* Horizontal begin */
 238         0x8c, 768,              /* Horizontal length */
 239         0x8d, 784,              /* Number of pixels
 240                                  * Must be >= Horizontal begin + Horizontal length */
 241         0x8f, 0xc00,            /* Disable window 2 */
 242         0xf0, 0x177,            /* 13.5 MHz transport, Forced
 243                                  * mode, latch windows */
 244         0xf2, 0x3d5,            /* SECAM, composite input */
 245         0xe7, 0x261,            /* PAL/SECAM set to 288 + 16 lines
 246                                  * change to 0x241 for 288 lines */
 247 };
 248
 249 static const unsigned char init_common[] = {
 250         0xf2, 0x00,             /* Disable all outputs */
 251         0x33, 0x0d,             /* Luma : VIN2, Chroma : CIN
 252                                  * (clamp off) */
 253         0xd8, 0xa8,             /* HREF/VREF active high, VREF
 254                                  * pulse = 2, Odd/Even flag */
 255         0x20, 0x03,             /* IF compensation 0dB/oct */
 256         0xe0, 0xff,             /* Open up all comparators */
 257         0xe1, 0x00,
 258         0xe2, 0x7f,
 259         0xe3, 0x80,
 260         0xe4, 0x7f,
 261         0xe5, 0x80,
 262         0xe6, 0x00,             /* Brightness set to 0 */
 263         0xe7, 0xe0,             /* Contrast to 1.0, noise shaping
 264                                  * 10 to 8 2-bit error diffusion */
 265         0xe8, 0xf8,             /* YUV422, CbCr binary offset,
 266                                  * ... (p.32) */
 267         0xea, 0x18,             /* LLC2 connected, output FIFO
 268                                  * reset with VACTintern */
 269         0xf0, 0x8a,             /* Half full level to 10, bus
 270                                  * shuffler [7:0, 23:16, 15:8] */
 271         0xf1, 0x18,             /* Single clock, sync mode, no
 272                                  * FE delay, no HLEN counter */
 273         0xf8, 0x12,             /* Port A, PIXCLK, HF# & FE#
 274                                  * strength to 2 */
 275         0xf9, 0x24,             /* Port B, HREF, VREF, PREF &
 276                                  * ALPHA strength to 4 */
 277 };
 278
 279 static const unsigned short init_fp[] = {
 280         0x59, 0,
 281         0xa0, 2070,             /* ACC reference */
 282         0xa3, 0,
 283         0xa4, 0,
 284         0xa8, 30,
 285         0xb2, 768,
 286         0xbe, 27,
 287         0x58, 0,
 288         0x26, 0,
 289         0x4b, 0x298,            /* PLL gain */
 290 };
 291
 292 static void
 293 vpx3220_dump_i2c (struct i2c_client *client)
 294 {
 295         int len = sizeof(init_common);
 296         const unsigned char *data = init_common;
 297
 298         while (len > 1) {
 299                 dprintk(1,
 300                         KERN_DEBUG "vpx3216b i2c reg 0x%02x data 0x%02x\n",
 301                         *data, vpx3220_read(client, *data));
 302                 data += 2;
 303                 len -= 2;
 304         }
 305 }
 306
 307 static int
 308 vpx3220_command (struct i2c_client *client,
 309                  unsigned int       cmd,
 310                  void              *arg)
 311 {
 312         struct vpx3220 *decoder = i2c_get_clientdata(client);
 313
 314         switch (cmd) {
 315         case 0:
 316         {
 317                 vpx3220_write_block(client, init_common,
 318                                     sizeof(init_common));
 319                 vpx3220_write_fp_block(client, init_fp,
 320                                        sizeof(init_fp) >> 1);
 321                 switch (decoder->norm) {
 322
 323                 case VIDEO_MODE_NTSC:
 324                         vpx3220_write_fp_block(client, init_ntsc,
 325                                                sizeof(init_ntsc) >> 1);
 326                         break;
 327
 328                 case VIDEO_MODE_PAL:
 329                         vpx3220_write_fp_block(client, init_pal,
 330                                                sizeof(init_pal) >> 1);
 331                         break;
 332                 case VIDEO_MODE_SECAM:
 333                         vpx3220_write_fp_block(client, init_secam,
 334                                                sizeof(init_secam) >> 1);
 335                         break;
 336                 default:
 337                         vpx3220_write_fp_block(client, init_pal,
 338                                                sizeof(init_pal) >> 1);
 339                         break;
 340                 }
 341         }
 342                 break;
 343
 344         case DECODER_DUMP:
 345         {
 346                 vpx3220_dump_i2c(client);
 347         }
 348                 break;
 349
 350         case DECODER_GET_CAPABILITIES:
 351         {
 352                 struct video_decoder_capability *cap = arg;
 353
 354                 dprintk(1, KERN_DEBUG "%s: DECODER_GET_CAPABILITIES\n",
 355                         I2C_NAME(client));
 356
 357                 cap->flags = VIDEO_DECODER_PAL |
 358                              VIDEO_DECODER_NTSC |
 359                              VIDEO_DECODER_SECAM |
 360                              VIDEO_DECODER_AUTO |
 361                              VIDEO_DECODER_CCIR;
 362                 cap->inputs = 3;
 363                 cap->outputs = 1;
 364         }
 365                 break;
 366
 367         case DECODER_GET_STATUS:
 368         {
 369                 int res = 0, status;
 370
 371                 dprintk(1, KERN_INFO "%s: DECODER_GET_STATUS\n",
 372                         I2C_NAME(client));
 373
 374                 status = vpx3220_fp_read(client, 0x0f3);
 375
 376                 dprintk(1, KERN_INFO "%s: status: 0x%04x\n", I2C_NAME(client),
 377                         status);
 378
 379                 if (status < 0)
 380                         return status;
 381
 382                 if ((status & 0x20) == 0) {
 383                         res |= DECODER_STATUS_GOOD | DECODER_STATUS_COLOR;
 384
 385                         switch (status & 0x18) {
 386
 387                         case 0x00:
 388                         case 0x10:
 389                         case 0x14:
 390                         case 0x18:
 391                                 res |= DECODER_STATUS_PAL;
 392                                 break;
 393
 394                         case 0x08:
 395                                 res |= DECODER_STATUS_SECAM;
 396                                 break;
 397
 398                         case 0x04:
 399                         case 0x0c:
 400                         case 0x1c:
 401                                 res |= DECODER_STATUS_NTSC;
 402                                 break;
 403                         }
 404                 }
 405
 406                 *(int *) arg = res;
 407         }
 408                 break;
 409
 410         case DECODER_SET_NORM:
 411         {
 412                 int *iarg = arg, data;
 413
 414                 dprintk(1, KERN_DEBUG "%s: DECODER_SET_NORM %d\n",
 415                         I2C_NAME(client), *iarg);
 416                 switch (*iarg) {
 417
 418                 case VIDEO_MODE_NTSC:
 419                         vpx3220_write_fp_block(client, init_ntsc,
 420                                                sizeof(init_ntsc) >> 1);
 421                         dprintk(1, KERN_INFO "%s: norm switched to NTSC\n",
 422                                 I2C_NAME(client));
 423                         break;
 424
 425                 case VIDEO_MODE_PAL:
 426                         vpx3220_write_fp_block(client, init_pal,
 427                                                sizeof(init_pal) >> 1);
 428                         dprintk(1, KERN_INFO "%s: norm switched to PAL\n",
 429                                 I2C_NAME(client));
 430                         break;
 431
 432                 case VIDEO_MODE_SECAM:
 433                         vpx3220_write_fp_block(client, init_secam,
 434                                                sizeof(init_secam) >> 1);
 435                         dprintk(1, KERN_INFO "%s: norm switched to SECAM\n",
 436                                 I2C_NAME(client));
 437                         break;
 438
 439                 case VIDEO_MODE_AUTO:
 440                         /* FIXME This is only preliminary support */
 441                         data = vpx3220_fp_read(client, 0xf2) & 0x20;
 442                         vpx3220_fp_write(client, 0xf2, 0x00c0 | data);
 443                         dprintk(1, KERN_INFO "%s: norm switched to Auto\n",
 444                                 I2C_NAME(client));
 445                         break;
 446
 447                 default:
 448                         return -EINVAL;
 449
 450                 }
 451                 decoder->norm = *iarg;
 452         }
 453                 break;
 454
 455         case DECODER_SET_INPUT:
 456         {
 457                 int *iarg = arg, data;
 458
 459                 /* RJ:  *iarg = 0: ST8 (PCTV) input
 460                  *iarg = 1: COMPOSITE  input
 461                  *iarg = 2: SVHS       input  */
 462
 463                 const int input[3][2] = {
 464                         {0x0c, 0},
 465                         {0x0d, 0},
 466                         {0x0e, 1}
 467                 };
 468
 469                 if (*iarg < 0 || *iarg > 2)
 470                         return -EINVAL;
 471
 472                 dprintk(1, KERN_INFO "%s: input switched to %s\n",
 473                         I2C_NAME(client), inputs[*iarg]);
 474
 475                 vpx3220_write(client, 0x33, input[*iarg][0]);
 476
 477                 data = vpx3220_fp_read(client, 0xf2) & ~(0x0020);
 478                 if (data < 0)
 479                         return data;
 480                 /* 0x0010 is required to latch the setting */
 481                 vpx3220_fp_write(client, 0xf2,
 482                                  data | (input[*iarg][1] << 5) | 0x0010);
 483
 484                 udelay(10);
 485         }
 486                 break;
 487
 488         case DECODER_SET_OUTPUT:
 489         {
 490                 int *iarg = arg;
 491
 492                 /* not much choice of outputs */
 493                 if (*iarg != 0) {
 494                         return -EINVAL;
 495                 }
 496         }
 497                 break;
 498
 499         case DECODER_ENABLE_OUTPUT:
 500         {
 501                 int *iarg = arg;
 502
 503                 dprintk(1, KERN_DEBUG "%s: DECODER_ENABLE_OUTPUT %d\n",
 504                         I2C_NAME(client), *iarg);
 505
 506                 vpx3220_write(client, 0xf2, (*iarg ? 0x1b : 0x00));
 507         }
 508                 break;
 509
 510         case DECODER_SET_PICTURE:
 511         {
 512                 struct video_picture *pic = arg;
 513
 514                 if (decoder->bright != pic->brightness) {
 515                         /* We want -128 to 128 we get 0-65535 */
 516                         decoder->bright = pic->brightness;
 517                         vpx3220_write(client, 0xe6,
 518                                       (decoder->bright - 32768) >> 8);
 519                 }
 520                 if (decoder->contrast != pic->contrast) {
 521                         /* We want 0 to 64 we get 0-65535 */
 522                         /* Bit 7 and 8 is for noise shaping */
 523                         decoder->contrast = pic->contrast;
 524                         vpx3220_write(client, 0xe7,
 525                                       (decoder->contrast >> 10) + 192);
 526                 }
 527                 if (decoder->sat != pic->colour) {
 528                         /* We want 0 to 4096 we get 0-65535 */
 529                         decoder->sat = pic->colour;
 530                         vpx3220_fp_write(client, 0xa0,
 531                                          decoder->sat >> 4);
 532                 }
 533                 if (decoder->hue != pic->hue) {
 534                         /* We want -512 to 512 we get 0-65535 */
 535                         decoder->hue = pic->hue;
 536                         vpx3220_fp_write(client, 0x1c,
 537                                          ((decoder->hue - 32768) >> 6) & 0xFFF);
 538                 }
 539         }
 540                 break;
 541
 542         default:
 543                 return -EINVAL;
 544         }
 545
 546         return 0;
 547 }
 548
 549 static int
 550 vpx3220_init_client (struct i2c_client *client)
 551 {
 552         vpx3220_write_block(client, init_common, sizeof(init_common));
 553         vpx3220_write_fp_block(client, init_fp, sizeof(init_fp) >> 1);
 554         /* Default to PAL */
 555         vpx3220_write_fp_block(client, init_pal, sizeof(init_pal) >> 1);
 556
 557         return 0;
 558 }
 559
 560 /* -----------------------------------------------------------------------
 561  * Client managment code
 562  */
 563
 564 /*
 565  * Generic i2c probe
 566  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 567  */
 568 static unsigned short normal_i2c[] =
 569     { I2C_VPX3220 >> 1, (I2C_VPX3220 >> 1) + 4,
 570         I2C_CLIENT_END
 571 };
 572
 573 static unsigned short ignore = I2C_CLIENT_END;
 574
 575 static struct i2c_client_address_data addr_data = {
 576         .normal_i2c             = normal_i2c,
 577         .probe                  = &ignore,
 578         .ignore                 = &ignore,
 579 };
 580
 581 static struct i2c_driver vpx3220_i2c_driver;
 582
 583 static int
 584 vpx3220_detach_client (struct i2c_client *client)
 585 {
 586         struct vpx3220 *decoder = i2c_get_clientdata(client);
 587         int err;
 588
 589         err = i2c_detach_client(client);
 590         if (err) {
 591                 return err;
 592         }
 593
 594         kfree(decoder);
 595         kfree(client);
 596
 597         return 0;
 598 }
 599
 600 static int
 601 vpx3220_detect_client (struct i2c_adapter *adapter,
 602                        int                 address,
 603                        int                 kind)
 604 {
 605         int err;
 606         struct i2c_client *client;
 607         struct vpx3220 *decoder;
 608
 609         dprintk(1, VPX3220_DEBUG "%s\n", __func__);
 610
 611         /* Check if the adapter supports the needed features */
 612         if (!i2c_check_functionality
 613             (adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
 614                 return 0;
 615
 616         client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
 617         if (client == NULL) {
 618                 return -ENOMEM;
 619         }
 620
 621         memset(client, 0, sizeof(struct i2c_client));
 622
 623         client->addr = address;
 624         client->adapter = adapter;
 625         client->driver = &vpx3220_i2c_driver;
 626         client->flags = I2C_CLIENT_ALLOW_USE;
 627
 628         /* Check for manufacture ID and part number */
 629         if (kind < 0) {
 630                 u8 id;
 631                 u16 pn;
 632
 633                 id = vpx3220_read(client, 0x00);
 634                 if (id != 0xec) {
 635                         dprintk(1,
 636                                 KERN_INFO
 637                                 "vpx3220_attach: Wrong manufacturer ID (0x%02x)\n",
 638                                 id);
 639                         kfree(client);
 640                         return 0;
 641                 }
 642
 643                 pn = (vpx3220_read(client, 0x02) << 8) +
 644                     vpx3220_read(client, 0x01);
 645                 switch (pn) {
 646                 case 0x4680:
 647                         strlcpy(I2C_NAME(client), "vpx3220a",
 648                                 sizeof(I2C_NAME(client)));
 649                         break;
 650                 case 0x4260:
 651                         strlcpy(I2C_NAME(client), "vpx3216b",
 652                                 sizeof(I2C_NAME(client)));
 653                         break;
 654                 case 0x4280:
 655                         strlcpy(I2C_NAME(client), "vpx3214c",
 656                                 sizeof(I2C_NAME(client)));
 657                         break;
 658                 default:
 659                         dprintk(1,
 660                                 KERN_INFO
 661                                 "%s: Wrong part number (0x%04x)\n",
 662                                 __func__, pn);
 663                         kfree(client);
 664                         return 0;
 665                 }
 666         } else {
 667                 strlcpy(I2C_NAME(client), "forced vpx32xx",
 668                         sizeof(I2C_NAME(client)));
 669         }
 670
 671         decoder = kmalloc(sizeof(struct vpx3220), GFP_KERNEL);
 672         if (decoder == NULL) {
 673                 kfree(client);
 674                 return -ENOMEM;
 675         }
 676         memset(decoder, 0, sizeof(struct vpx3220));
 677         decoder->norm = VIDEO_MODE_PAL;
 678         decoder->input = 0;
 679         decoder->enable = 1;
 680         decoder->bright = 32768;
 681         decoder->contrast = 32768;
 682         decoder->hue = 32768;
 683         decoder->sat = 32768;
 684         i2c_set_clientdata(client, decoder);
 685
 686         err = i2c_attach_client(client);
 687         if (err) {
 688                 kfree(client);
 689                 kfree(decoder);
 690                 return err;
 691         }
 692
 693         dprintk(1, KERN_INFO "%s: vpx32xx client found at address 0x%02x\n",
 694                 I2C_NAME(client), client->addr << 1);
 695
 696         vpx3220_init_client(client);
 697
 698         return 0;
 699 }
 700
 701 static int
 702 vpx3220_attach_adapter (struct i2c_adapter *adapter)
 703 {
 704         int ret;
 705
 706         ret = i2c_probe(adapter, &addr_data, &vpx3220_detect_client);
 707         dprintk(1, VPX3220_DEBUG "%s: i2c_probe returned %d\n",
 708                 __func__, ret);
 709         return ret;
 710 }
 711
 712 /* -----------------------------------------------------------------------
 713  * Driver initialization and cleanup code
 714  */
 715
 716 static struct i2c_driver vpx3220_i2c_driver = {
 717         .owner = THIS_MODULE,
 718         .name = "vpx3220",
 719
 720         .id = I2C_DRIVERID_VPX3220,
 721         .flags = I2C_DF_NOTIFY,
 722
 723         .attach_adapter = vpx3220_attach_adapter,
 724         .detach_client = vpx3220_detach_client,
 725         .command = vpx3220_command,
 726 };
 727
 728 static int __init
 729 vpx3220_init (void)
 730 {
 731         return i2c_add_driver(&vpx3220_i2c_driver);
 732 }
 733
 734 static void __exit
 735 vpx3220_cleanup (void)
 736 {
 737         i2c_del_driver(&vpx3220_i2c_driver);
 738 }
 739
 740 module_init(vpx3220_init);
 741 module_exit(vpx3220_cleanup);
 742
 743 MODULE_DESCRIPTION("vpx3220a/vpx3216b/vpx3214c video encoder driver");
 744 MODULE_AUTHOR("Laurent Pinchart");
 745 MODULE_LICENSE("GPL");