drivers/media/video/tw9910.c

   1 /*
   2  * tw9910 Video Driver
   3  *
   4  * Copyright (C) 2008 Renesas Solutions Corp.
   5  * Kuninori Morimoto <morimoto.kuninori@renesas.com>
   6  *
   7  * Based on ov772x driver,
   8  *
   9  * Copyright (C) 2008 Kuninori Morimoto <morimoto.kuninori@renesas.com>
  10  * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
  11  * Copyright (C) 2008 Magnus Damm
  12  * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License version 2 as
  16  * published by the Free Software Foundation.
  17  */
  18
  19 #include <linux/init.h>
  20 #include <linux/module.h>
  21 #include <linux/i2c.h>
  22 #include <linux/slab.h>
  23 #include <linux/kernel.h>
  24 #include <linux/delay.h>
  25 #include <linux/videodev2.h>
  26 #include <media/v4l2-chip-ident.h>
  27 #include <media/v4l2-common.h>
  28 #include <media/soc_camera.h>
  29 #include <media/tw9910.h>
  30
  31 #define GET_ID(val)  ((val & 0xF8) >> 3)
  32 #define GET_ReV(val) (val & 0x07)
  33
  34 /*
  35  * register offset
  36  */
  37 #define ID              0x00 /* Product ID Code Register */
  38 #define STATUS1         0x01 /* Chip Status Register I */
  39 #define INFORM          0x02 /* Input Format */
  40 #define OPFORM          0x03 /* Output Format Control Register */
  41 #define DLYCTR          0x04 /* Hysteresis and HSYNC Delay Control */
  42 #define OUTCTR1         0x05 /* Output Control I */
  43 #define ACNTL1          0x06 /* Analog Control Register 1 */
  44 #define CROP_HI         0x07 /* Cropping Register, High */
  45 #define VDELAY_LO       0x08 /* Vertical Delay Register, Low */
  46 #define VACTIVE_LO      0x09 /* Vertical Active Register, Low */
  47 #define HDELAY_LO       0x0A /* Horizontal Delay Register, Low */
  48 #define HACTIVE_LO      0x0B /* Horizontal Active Register, Low */
  49 #define CNTRL1          0x0C /* Control Register I */
  50 #define VSCALE_LO       0x0D /* Vertical Scaling Register, Low */
  51 #define SCALE_HI        0x0E /* Scaling Register, High */
  52 #define HSCALE_LO       0x0F /* Horizontal Scaling Register, Low */
  53 #define BRIGHT          0x10 /* BRIGHTNESS Control Register */
  54 #define CONTRAST        0x11 /* CONTRAST Control Register */
  55 #define SHARPNESS       0x12 /* SHARPNESS Control Register I */
  56 #define SAT_U           0x13 /* Chroma (U) Gain Register */
  57 #define SAT_V           0x14 /* Chroma (V) Gain Register */
  58 #define HUE             0x15 /* Hue Control Register */
  59 #define CORING1         0x17
  60 #define CORING2         0x18 /* Coring and IF compensation */
  61 #define VBICNTL         0x19 /* VBI Control Register */
  62 #define ACNTL2          0x1A /* Analog Control 2 */
  63 #define OUTCTR2         0x1B /* Output Control 2 */
  64 #define SDT             0x1C /* Standard Selection */
  65 #define SDTR            0x1D /* Standard Recognition */
  66 #define TEST            0x1F /* Test Control Register */
  67 #define CLMPG           0x20 /* Clamping Gain */
  68 #define IAGC            0x21 /* Individual AGC Gain */
  69 #define AGCGAIN         0x22 /* AGC Gain */
  70 #define PEAKWT          0x23 /* White Peak Threshold */
  71 #define CLMPL           0x24 /* Clamp level */
  72 #define SYNCT           0x25 /* Sync Amplitude */
  73 #define MISSCNT         0x26 /* Sync Miss Count Register */
  74 #define PCLAMP          0x27 /* Clamp Position Register */
  75 #define VCNTL1          0x28 /* Vertical Control I */
  76 #define VCNTL2          0x29 /* Vertical Control II */
  77 #define CKILL           0x2A /* Color Killer Level Control */
  78 #define COMB            0x2B /* Comb Filter Control */
  79 #define LDLY            0x2C /* Luma Delay and H Filter Control */
  80 #define MISC1           0x2D /* Miscellaneous Control I */
  81 #define LOOP            0x2E /* LOOP Control Register */
  82 #define MISC2           0x2F /* Miscellaneous Control II */
  83 #define MVSN            0x30 /* Macrovision Detection */
  84 #define STATUS2         0x31 /* Chip STATUS II */
  85 #define HFREF           0x32 /* H monitor */
  86 #define CLMD            0x33 /* CLAMP MODE */
  87 #define IDCNTL          0x34 /* ID Detection Control */
  88 #define CLCNTL1         0x35 /* Clamp Control I */
  89 #define ANAPLLCTL       0x4C
  90 #define VBIMIN          0x4D
  91 #define HSLOWCTL        0x4E
  92 #define WSS3            0x4F
  93 #define FILLDATA        0x50
  94 #define SDID            0x51
  95 #define DID             0x52
  96 #define WSS1            0x53
  97 #define WSS2            0x54
  98 #define VVBI            0x55
  99 #define LCTL6           0x56
 100 #define LCTL7           0x57
 101 #define LCTL8           0x58
 102 #define LCTL9           0x59
 103 #define LCTL10          0x5A
 104 #define LCTL11          0x5B
 105 #define LCTL12          0x5C
 106 #define LCTL13          0x5D
 107 #define LCTL14          0x5E
 108 #define LCTL15          0x5F
 109 #define LCTL16          0x60
 110 #define LCTL17          0x61
 111 #define LCTL18          0x62
 112 #define LCTL19          0x63
 113 #define LCTL20          0x64
 114 #define LCTL21          0x65
 115 #define LCTL22          0x66
 116 #define LCTL23          0x67
 117 #define LCTL24          0x68
 118 #define LCTL25          0x69
 119 #define LCTL26          0x6A
 120 #define HSGEGIN         0x6B
 121 #define HSEND           0x6C
 122 #define OVSDLY          0x6D
 123 #define OVSEND          0x6E
 124 #define VBIDELAY        0x6F
 125
 126 /*
 127  * register detail
 128  */
 129
 130 /* INFORM */
 131 #define FC27_ON     0x40 /* 1 : Input crystal clock frequency is 27MHz */
 132 #define FC27_FF     0x00 /* 0 : Square pixel mode. */
 133                          /*     Must use 24.54MHz for 60Hz field rate */
 134                          /*     source or 29.5MHz for 50Hz field rate */
 135 #define IFSEL_S     0x10 /* 01 : S-video decoding */
 136 #define IFSEL_C     0x00 /* 00 : Composite video decoding */
 137                          /* Y input video selection */
 138 #define YSEL_M0     0x00 /*  00 : Mux0 selected */
 139 #define YSEL_M1     0x04 /*  01 : Mux1 selected */
 140 #define YSEL_M2     0x08 /*  10 : Mux2 selected */
 141 #define YSEL_M3     0x10 /*  11 : Mux3 selected */
 142
 143 /* OPFORM */
 144 #define MODE        0x80 /* 0 : CCIR601 compatible YCrCb 4:2:2 format */
 145                          /* 1 : ITU-R-656 compatible data sequence format */
 146 #define LEN         0x40 /* 0 : 8-bit YCrCb 4:2:2 output format */
 147                          /* 1 : 16-bit YCrCb 4:2:2 output format.*/
 148 #define LLCMODE     0x20 /* 1 : LLC output mode. */
 149                          /* 0 : free-run output mode */
 150 #define AINC        0x10 /* Serial interface auto-indexing control */
 151                          /* 0 : auto-increment */
 152                          /* 1 : non-auto */
 153 #define VSCTL       0x08 /* 1 : Vertical out ctrl by DVALID */
 154                          /* 0 : Vertical out ctrl by HACTIVE and DVALID */
 155 #define OEN         0x04 /* Output Enable together with TRI_SEL. */
 156
 157 /* OUTCTR1 */
 158 #define VSP_LO      0x00 /* 0 : VS pin output polarity is active low */
 159 #define VSP_HI      0x80 /* 1 : VS pin output polarity is active high. */
 160                          /* VS pin output control */
 161 #define VSSL_VSYNC  0x00 /*   0 : VSYNC  */
 162 #define VSSL_VACT   0x10 /*   1 : VACT   */
 163 #define VSSL_FIELD  0x20 /*   2 : FIELD  */
 164 #define VSSL_VVALID 0x30 /*   3 : VVALID */
 165 #define VSSL_ZERO   0x70 /*   7 : 0      */
 166 #define HSP_LOW     0x00 /* 0 : HS pin output polarity is active low */
 167 #define HSP_HI      0x08 /* 1 : HS pin output polarity is active high.*/
 168                          /* HS pin output control */
 169 #define HSSL_HACT   0x00 /*   0 : HACT   */
 170 #define HSSL_HSYNC  0x01 /*   1 : HSYNC  */
 171 #define HSSL_DVALID 0x02 /*   2 : DVALID */
 172 #define HSSL_HLOCK  0x03 /*   3 : HLOCK  */
 173 #define HSSL_ASYNCW 0x04 /*   4 : ASYNCW */
 174 #define HSSL_ZERO   0x07 /*   7 : 0      */
 175
 176 /* ACNTL1 */
 177 #define SRESET      0x80 /* resets the device to its default state
 178                           * but all register content remain unchanged.
 179                           * This bit is self-resetting.
 180                           */
 181
 182 /* VBICNTL */
 183 /* RTSEL : control the real time signal
 184 *          output from the MPOUT pin
 185 */
 186 #define RTSEL_MASK  0x07
 187 #define RTSEL_VLOSS 0x00 /* 0000 = Video loss */
 188 #define RTSEL_HLOCK 0x01 /* 0001 = H-lock */
 189 #define RTSEL_SLOCK 0x02 /* 0010 = S-lock */
 190 #define RTSEL_VLOCK 0x03 /* 0011 = V-lock */
 191 #define RTSEL_MONO  0x04 /* 0100 = MONO */
 192 #define RTSEL_DET50 0x05 /* 0101 = DET50 */
 193 #define RTSEL_FIELD 0x06 /* 0110 = FIELD */
 194 #define RTSEL_RTCO  0x07 /* 0111 = RTCO ( Real Time Control ) */
 195
 196 /*
 197  * structure
 198  */
 199
 200 struct regval_list {
 201         unsigned char reg_num;
 202         unsigned char value;
 203 };
 204
 205 struct tw9910_scale_ctrl {
 206         char           *name;
 207         unsigned short  width;
 208         unsigned short  height;
 209         u16             hscale;
 210         u16             vscale;
 211 };
 212
 213 struct tw9910_cropping_ctrl {
 214         u16 vdelay;
 215         u16 vactive;
 216         u16 hdelay;
 217         u16 hactive;
 218 };
 219
 220 struct tw9910_hsync_ctrl {
 221         u16 start;
 222         u16 end;
 223 };
 224
 225 struct tw9910_priv {
 226         struct tw9910_video_info       *info;
 227         struct i2c_client              *client;
 228         struct soc_camera_device        icd;
 229         const struct tw9910_scale_ctrl *scale;
 230 };
 231
 232 /*
 233  * register settings
 234  */
 235
 236 #define ENDMARKER { 0xff, 0xff }
 237
 238 static const struct regval_list tw9910_default_regs[] =
 239 {
 240         { OPFORM,  0x00 },
 241         { OUTCTR1, VSP_LO | VSSL_VVALID | HSP_HI | HSSL_HSYNC },
 242         ENDMARKER,
 243 };
 244
 245 static const struct soc_camera_data_format tw9910_color_fmt[] = {
 246         {
 247                 .name       = "VYUY",
 248                 .fourcc     = V4L2_PIX_FMT_VYUY,
 249                 .depth      = 16,
 250                 .colorspace = V4L2_COLORSPACE_SMPTE170M,
 251         }
 252 };
 253
 254 static const struct tw9910_scale_ctrl tw9910_ntsc_scales[] = {
 255         {
 256                 .name   = "NTSC SQ",
 257                 .width  = 640,
 258                 .height = 480,
 259                 .hscale = 0x0100,
 260                 .vscale = 0x0100,
 261         },
 262         {
 263                 .name   = "NTSC CCIR601",
 264                 .width  = 720,
 265                 .height = 480,
 266                 .hscale = 0x0100,
 267                 .vscale = 0x0100,
 268         },
 269         {
 270                 .name   = "NTSC SQ (CIF)",
 271                 .width  = 320,
 272                 .height = 240,
 273                 .hscale = 0x0200,
 274                 .vscale = 0x0200,
 275         },
 276         {
 277                 .name   = "NTSC CCIR601 (CIF)",
 278                 .width  = 360,
 279                 .height = 240,
 280                 .hscale = 0x0200,
 281                 .vscale = 0x0200,
 282         },
 283         {
 284                 .name   = "NTSC SQ (QCIF)",
 285                 .width  = 160,
 286                 .height = 120,
 287                 .hscale = 0x0400,
 288                 .vscale = 0x0400,
 289         },
 290         {
 291                 .name   = "NTSC CCIR601 (QCIF)",
 292                 .width  = 180,
 293                 .height = 120,
 294                 .hscale = 0x0400,
 295                 .vscale = 0x0400,
 296         },
 297 };
 298
 299 static const struct tw9910_scale_ctrl tw9910_pal_scales[] = {
 300         {
 301                 .name   = "PAL SQ",
 302                 .width  = 768,
 303                 .height = 576,
 304                 .hscale = 0x0100,
 305                 .vscale = 0x0100,
 306         },
 307         {
 308                 .name   = "PAL CCIR601",
 309                 .width  = 720,
 310                 .height = 576,
 311                 .hscale = 0x0100,
 312                 .vscale = 0x0100,
 313         },
 314         {
 315                 .name   = "PAL SQ (CIF)",
 316                 .width  = 384,
 317                 .height = 288,
 318                 .hscale = 0x0200,
 319                 .vscale = 0x0200,
 320         },
 321         {
 322                 .name   = "PAL CCIR601 (CIF)",
 323                 .width  = 360,
 324                 .height = 288,
 325                 .hscale = 0x0200,
 326                 .vscale = 0x0200,
 327         },
 328         {
 329                 .name   = "PAL SQ (QCIF)",
 330                 .width  = 192,
 331                 .height = 144,
 332                 .hscale = 0x0400,
 333                 .vscale = 0x0400,
 334         },
 335         {
 336                 .name   = "PAL CCIR601 (QCIF)",
 337                 .width  = 180,
 338                 .height = 144,
 339                 .hscale = 0x0400,
 340                 .vscale = 0x0400,
 341         },
 342 };
 343
 344 static const struct tw9910_cropping_ctrl tw9910_cropping_ctrl = {
 345         .vdelay  = 0x0012,
 346         .vactive = 0x00F0,
 347         .hdelay  = 0x0010,
 348         .hactive = 0x02D0,
 349 };
 350
 351 static const struct tw9910_hsync_ctrl tw9910_hsync_ctrl = {
 352         .start = 0x0260,
 353         .end   = 0x0300,
 354 };
 355
 356 /*
 357  * general function
 358  */
 359 static int tw9910_set_scale(struct i2c_client *client,
 360                             const struct tw9910_scale_ctrl *scale)
 361 {
 362         int ret;
 363
 364         ret = i2c_smbus_write_byte_data(client, SCALE_HI,
 365                                         (scale->vscale & 0x0F00) >> 4 |
 366                                         (scale->hscale & 0x0F00) >> 8);
 367         if (ret < 0)
 368                 return ret;
 369
 370         ret = i2c_smbus_write_byte_data(client, HSCALE_LO,
 371                                         scale->hscale & 0x00FF);
 372         if (ret < 0)
 373                 return ret;
 374
 375         ret = i2c_smbus_write_byte_data(client, VSCALE_LO,
 376                                         scale->vscale & 0x00FF);
 377
 378         return ret;
 379 }
 380
 381 static int tw9910_set_cropping(struct i2c_client *client,
 382                                const struct tw9910_cropping_ctrl *cropping)
 383 {
 384         int ret;
 385
 386         ret = i2c_smbus_write_byte_data(client, CROP_HI,
 387                                         (cropping->vdelay  & 0x0300) >> 2 |
 388                                         (cropping->vactive & 0x0300) >> 4 |
 389                                         (cropping->hdelay  & 0x0300) >> 6 |
 390                                         (cropping->hactive & 0x0300) >> 8);
 391         if (ret < 0)
 392                 return ret;
 393
 394         ret = i2c_smbus_write_byte_data(client, VDELAY_LO,
 395                                         cropping->vdelay & 0x00FF);
 396         if (ret < 0)
 397                 return ret;
 398
 399         ret = i2c_smbus_write_byte_data(client, VACTIVE_LO,
 400                                         cropping->vactive & 0x00FF);
 401         if (ret < 0)
 402                 return ret;
 403
 404         ret = i2c_smbus_write_byte_data(client, HDELAY_LO,
 405                                         cropping->hdelay & 0x00FF);
 406         if (ret < 0)
 407                 return ret;
 408
 409         ret = i2c_smbus_write_byte_data(client, HACTIVE_LO,
 410                                         cropping->hactive & 0x00FF);
 411
 412         return ret;
 413 }
 414
 415 static int tw9910_set_hsync(struct i2c_client *client,
 416                             const struct tw9910_hsync_ctrl *hsync)
 417 {
 418         int ret;
 419
 420         /* bit 10 - 3 */
 421         ret = i2c_smbus_write_byte_data(client, HSGEGIN,
 422                                         (hsync->start & 0x07F8) >> 3);
 423         if (ret < 0)
 424                 return ret;
 425
 426         /* bit 10 - 3 */
 427         ret = i2c_smbus_write_byte_data(client, HSEND,
 428                                         (hsync->end & 0x07F8) >> 3);
 429         if (ret < 0)
 430                 return ret;
 431
 432         /* bit 2 - 0 */
 433         ret = i2c_smbus_read_byte_data(client, HSLOWCTL);
 434         if (ret < 0)
 435                 return ret;
 436
 437         ret = i2c_smbus_write_byte_data(client, HSLOWCTL,
 438                                         (ret & 0x88)                 |
 439                                         (hsync->start & 0x0007) << 4 |
 440                                         (hsync->end   & 0x0007));
 441
 442         return ret;
 443 }
 444
 445 static int tw9910_write_array(struct i2c_client *client,
 446                               const struct regval_list *vals)
 447 {
 448         while (vals->reg_num != 0xff) {
 449                 int ret = i2c_smbus_write_byte_data(client,
 450                                                     vals->reg_num,
 451                                                     vals->value);
 452                 if (ret < 0)
 453                         return ret;
 454                 vals++;
 455         }
 456         return 0;
 457 }
 458
 459 static int tw9910_mask_set(struct i2c_client *client, u8 command,
 460                            u8 mask, u8 set)
 461 {
 462         s32 val = i2c_smbus_read_byte_data(client, command);
 463         if (val < 0)
 464                 return val;
 465
 466         val &= ~mask;
 467         val |= set & mask;
 468
 469         return i2c_smbus_write_byte_data(client, command, val);
 470 }
 471
 472 static void tw9910_reset(struct i2c_client *client)
 473 {
 474         i2c_smbus_write_byte_data(client, ACNTL1, SRESET);
 475         msleep(1);
 476 }
 477
 478 static const struct tw9910_scale_ctrl*
 479 tw9910_select_norm(struct soc_camera_device *icd, u32 width, u32 height)
 480 {
 481         const struct tw9910_scale_ctrl *scale;
 482         const struct tw9910_scale_ctrl *ret = NULL;
 483         v4l2_std_id norm = icd->vdev->current_norm;
 484         __u32 diff = 0xffffffff, tmp;
 485         int size, i;
 486
 487         if (norm & V4L2_STD_NTSC) {
 488                 scale = tw9910_ntsc_scales;
 489                 size = ARRAY_SIZE(tw9910_ntsc_scales);
 490         } else if (norm & V4L2_STD_PAL) {
 491                 scale = tw9910_pal_scales;
 492                 size = ARRAY_SIZE(tw9910_pal_scales);
 493         } else {
 494                 return NULL;
 495         }
 496
 497         for (i = 0; i < size; i++) {
 498                 tmp = abs(width - scale[i].width) +
 499                         abs(height - scale[i].height);
 500                 if (tmp < diff) {
 501                         diff = tmp;
 502                         ret = scale + i;
 503                 }
 504         }
 505
 506         return ret;
 507 }
 508
 509 /*
 510  * soc_camera_ops function
 511  */
 512 static int tw9910_init(struct soc_camera_device *icd)
 513 {
 514         struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
 515         int ret = 0;
 516
 517         if (priv->info->link.power) {
 518                 ret = priv->info->link.power(&priv->client->dev, 1);
 519                 if (ret < 0)
 520                         return ret;
 521         }
 522
 523         if (priv->info->link.reset)
 524                 ret = priv->info->link.reset(&priv->client->dev);
 525
 526         return ret;
 527 }
 528
 529 static int tw9910_release(struct soc_camera_device *icd)
 530 {
 531         struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
 532         int ret = 0;
 533
 534         if (priv->info->link.power)
 535                 ret = priv->info->link.power(&priv->client->dev, 0);
 536
 537         return ret;
 538 }
 539
 540 static int tw9910_start_capture(struct soc_camera_device *icd)
 541 {
 542         struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
 543
 544         if (!priv->scale) {
 545                 dev_err(&icd->dev, "norm select error\n");
 546                 return -EPERM;
 547         }
 548
 549         dev_dbg(&icd->dev, "%s %dx%d\n",
 550                  priv->scale->name,
 551                  priv->scale->width,
 552                  priv->scale->height);
 553
 554         return 0;
 555 }
 556
 557 static int tw9910_stop_capture(struct soc_camera_device *icd)
 558 {
 559         return 0;
 560 }
 561
 562 static int tw9910_set_bus_param(struct soc_camera_device *icd,
 563                                 unsigned long flags)
 564 {
 565         return 0;
 566 }
 567
 568 static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
 569 {
 570         struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
 571         struct soc_camera_link *icl = priv->client->dev.platform_data;
 572         unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
 573                 SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
 574                 SOCAM_DATA_ACTIVE_HIGH | priv->info->buswidth;
 575
 576         return soc_camera_apply_sensor_flags(icl, flags);
 577 }
 578
 579 static int tw9910_get_chip_id(struct soc_camera_device *icd,
 580                               struct v4l2_dbg_chip_ident *id)
 581 {
 582         id->ident = V4L2_IDENT_TW9910;
 583         id->revision = 0;
 584
 585         return 0;
 586 }
 587
 588 static int tw9910_set_std(struct soc_camera_device *icd,
 589                           v4l2_std_id *a)
 590 {
 591         int ret = -EINVAL;
 592
 593         if (*a & (V4L2_STD_NTSC | V4L2_STD_PAL))
 594                 ret = 0;
 595
 596         return ret;
 597 }
 598
 599 static int tw9910_enum_input(struct soc_camera_device *icd,
 600                              struct v4l2_input *inp)
 601 {
 602         inp->type = V4L2_INPUT_TYPE_TUNER;
 603         inp->std  = V4L2_STD_UNKNOWN;
 604         strcpy(inp->name, "Video");
 605
 606         return 0;
 607 }
 608
 609 #ifdef CONFIG_VIDEO_ADV_DEBUG
 610 static int tw9910_get_register(struct soc_camera_device *icd,
 611                                struct v4l2_dbg_register *reg)
 612 {
 613         struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
 614         int ret;
 615
 616         if (reg->reg > 0xff)
 617                 return -EINVAL;
 618
 619         ret = i2c_smbus_read_byte_data(priv->client, reg->reg);
 620         if (ret < 0)
 621                 return ret;
 622
 623         /* ret      = int
 624          * reg->val = __u64
 625          */
 626         reg->val = (__u64)ret;
 627
 628         return 0;
 629 }
 630
 631 static int tw9910_set_register(struct soc_camera_device *icd,
 632                                struct v4l2_dbg_register *reg)
 633 {
 634         struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
 635
 636         if (reg->reg > 0xff ||
 637             reg->val > 0xff)
 638                 return -EINVAL;
 639
 640         return i2c_smbus_write_byte_data(priv->client, reg->reg, reg->val);
 641 }
 642 #endif
 643
 644 static int tw9910_set_crop(struct soc_camera_device *icd,
 645                            struct v4l2_rect *rect)
 646 {
 647         struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
 648         int                 ret  = -EINVAL;
 649         u8                  val;
 650
 651         /*
 652          * select suitable norm
 653          */
 654         priv->scale = tw9910_select_norm(icd, rect->width, rect->height);
 655         if (!priv->scale)
 656                 goto tw9910_set_fmt_error;
 657
 658         /*
 659          * reset hardware
 660          */
 661         tw9910_reset(priv->client);
 662         ret = tw9910_write_array(priv->client, tw9910_default_regs);
 663         if (ret < 0)
 664                 goto tw9910_set_fmt_error;
 665
 666         /*
 667          * set bus width
 668          */
 669         val = 0x00;
 670         if (SOCAM_DATAWIDTH_16 == priv->info->buswidth)
 671                 val = LEN;
 672
 673         ret = tw9910_mask_set(priv->client, OPFORM, LEN, val);
 674         if (ret < 0)
 675                 goto tw9910_set_fmt_error;
 676
 677         /*
 678          * select MPOUT behavior
 679          */
 680         switch (priv->info->mpout) {
 681         case TW9910_MPO_VLOSS:
 682                 val = RTSEL_VLOSS; break;
 683         case TW9910_MPO_HLOCK:
 684                 val = RTSEL_HLOCK; break;
 685         case TW9910_MPO_SLOCK:
 686                 val = RTSEL_SLOCK; break;
 687         case TW9910_MPO_VLOCK:
 688                 val = RTSEL_VLOCK; break;
 689         case TW9910_MPO_MONO:
 690                 val = RTSEL_MONO;  break;
 691         case TW9910_MPO_DET50:
 692                 val = RTSEL_DET50; break;
 693         case TW9910_MPO_FIELD:
 694                 val = RTSEL_FIELD; break;
 695         case TW9910_MPO_RTCO:
 696                 val = RTSEL_RTCO;  break;
 697         default:
 698                 val = 0;
 699         }
 700
 701         ret = tw9910_mask_set(priv->client, VBICNTL, RTSEL_MASK, val);
 702         if (ret < 0)
 703                 goto tw9910_set_fmt_error;
 704
 705         /*
 706          * set scale
 707          */
 708         ret = tw9910_set_scale(priv->client, priv->scale);
 709         if (ret < 0)
 710                 goto tw9910_set_fmt_error;
 711
 712         /*
 713          * set cropping
 714          */
 715         ret = tw9910_set_cropping(priv->client, &tw9910_cropping_ctrl);
 716         if (ret < 0)
 717                 goto tw9910_set_fmt_error;
 718
 719         /*
 720          * set hsync
 721          */
 722         ret = tw9910_set_hsync(priv->client, &tw9910_hsync_ctrl);
 723         if (ret < 0)
 724                 goto tw9910_set_fmt_error;
 725
 726         return ret;
 727
 728 tw9910_set_fmt_error:
 729
 730         tw9910_reset(priv->client);
 731         priv->scale = NULL;
 732
 733         return ret;
 734 }
 735
 736 static int tw9910_set_fmt(struct soc_camera_device *icd,
 737                           struct v4l2_format *f)
 738 {
 739         struct v4l2_pix_format *pix = &f->fmt.pix;
 740         struct v4l2_rect rect = {
 741                 .left   = icd->x_current,
 742                 .top    = icd->y_current,
 743                 .width  = pix->width,
 744                 .height = pix->height,
 745         };
 746         int i;
 747
 748         /*
 749          * check color format
 750          */
 751         for (i = 0; i < ARRAY_SIZE(tw9910_color_fmt); i++)
 752                 if (pix->pixelformat == tw9910_color_fmt[i].fourcc)
 753                         break;
 754
 755         if (i == ARRAY_SIZE(tw9910_color_fmt))
 756                 return -EINVAL;
 757
 758         return tw9910_set_crop(icd, &rect);
 759 }
 760
 761 static int tw9910_try_fmt(struct soc_camera_device *icd,
 762                           struct v4l2_format *f)
 763 {
 764         struct v4l2_pix_format *pix = &f->fmt.pix;
 765         const struct tw9910_scale_ctrl *scale;
 766
 767         if (V4L2_FIELD_ANY == pix->field) {
 768                 pix->field = V4L2_FIELD_INTERLACED;
 769         } else if (V4L2_FIELD_INTERLACED != pix->field) {
 770                 dev_err(&icd->dev, "Field type invalid.\n");
 771                 return -EINVAL;
 772         }
 773
 774         /*
 775          * select suitable norm
 776          */
 777         scale = tw9910_select_norm(icd, pix->width, pix->height);
 778         if (!scale)
 779                 return -EINVAL;
 780
 781         pix->width  = scale->width;
 782         pix->height = scale->height;
 783
 784         return 0;
 785 }
 786
 787 static int tw9910_video_probe(struct soc_camera_device *icd)
 788 {
 789         struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
 790         s32 val;
 791         int ret;
 792
 793         /*
 794          * We must have a parent by now. And it cannot be a wrong one.
 795          * So this entire test is completely redundant.
 796          */
 797         if (!icd->dev.parent ||
 798             to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
 799                 return -ENODEV;
 800
 801         /*
 802          * tw9910 only use 8 or 16 bit bus width
 803          */
 804         if (SOCAM_DATAWIDTH_16 != priv->info->buswidth &&
 805             SOCAM_DATAWIDTH_8  != priv->info->buswidth) {
 806                 dev_err(&icd->dev, "bus width error\n");
 807                 return -ENODEV;
 808         }
 809
 810         icd->formats     = tw9910_color_fmt;
 811         icd->num_formats = ARRAY_SIZE(tw9910_color_fmt);
 812
 813         /*
 814          * check and show Product ID
 815          */
 816         val = i2c_smbus_read_byte_data(priv->client, ID);
 817         if (0x0B != GET_ID(val) ||
 818             0x00 != GET_ReV(val)) {
 819                 dev_err(&icd->dev,
 820                         "Product ID error %x:%x\n", GET_ID(val), GET_ReV(val));
 821                 return -ENODEV;
 822         }
 823
 824         dev_info(&icd->dev,
 825                  "tw9910 Product ID %0x:%0x\n", GET_ID(val), GET_ReV(val));
 826
 827         ret = soc_camera_video_start(icd);
 828         if (ret < 0)
 829                 return ret;
 830
 831         icd->vdev->tvnorms      = V4L2_STD_NTSC | V4L2_STD_PAL;
 832         icd->vdev->current_norm = V4L2_STD_NTSC;
 833
 834         return ret;
 835 }
 836
 837 static void tw9910_video_remove(struct soc_camera_device *icd)
 838 {
 839         soc_camera_video_stop(icd);
 840 }
 841
 842 static struct soc_camera_ops tw9910_ops = {
 843         .owner                  = THIS_MODULE,
 844         .probe                  = tw9910_video_probe,
 845         .remove                 = tw9910_video_remove,
 846         .init                   = tw9910_init,
 847         .release                = tw9910_release,
 848         .start_capture          = tw9910_start_capture,
 849         .stop_capture           = tw9910_stop_capture,
 850         .set_crop               = tw9910_set_crop,
 851         .set_fmt                = tw9910_set_fmt,
 852         .try_fmt                = tw9910_try_fmt,
 853         .set_bus_param          = tw9910_set_bus_param,
 854         .query_bus_param        = tw9910_query_bus_param,
 855         .get_chip_id            = tw9910_get_chip_id,
 856         .set_std                = tw9910_set_std,
 857         .enum_input             = tw9910_enum_input,
 858 #ifdef CONFIG_VIDEO_ADV_DEBUG
 859         .get_register           = tw9910_get_register,
 860         .set_register           = tw9910_set_register,
 861 #endif
 862 };
 863
 864 /*
 865  * i2c_driver function
 866  */
 867
 868 static int tw9910_probe(struct i2c_client *client,
 869                         const struct i2c_device_id *did)
 870
 871 {
 872         struct tw9910_priv             *priv;
 873         struct tw9910_video_info       *info;
 874         struct soc_camera_device       *icd;
 875         const struct tw9910_scale_ctrl *scale;
 876         int                             i, ret;
 877
 878         if (!client->dev.platform_data)
 879                 return -EINVAL;
 880
 881         info = container_of(client->dev.platform_data,
 882                             struct tw9910_video_info, link);
 883
 884         if (!i2c_check_functionality(to_i2c_adapter(client->dev.parent),
 885                                      I2C_FUNC_SMBUS_BYTE_DATA)) {
 886                 dev_err(&client->dev,
 887                         "I2C-Adapter doesn't support "
 888                         "I2C_FUNC_SMBUS_BYTE_DATA\n");
 889                 return -EIO;
 890         }
 891
 892         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 893         if (!priv)
 894                 return -ENOMEM;
 895
 896         priv->info   = info;
 897         priv->client = client;
 898         i2c_set_clientdata(client, priv);
 899
 900         icd          = &priv->icd;
 901         icd->ops     = &tw9910_ops;
 902         icd->control = &client->dev;
 903         icd->iface   = info->link.bus_id;
 904
 905         /*
 906          * set width and height
 907          */
 908         icd->width_max  = tw9910_ntsc_scales[0].width; /* set default */
 909         icd->width_min  = tw9910_ntsc_scales[0].width;
 910         icd->height_max = tw9910_ntsc_scales[0].height;
 911         icd->height_min = tw9910_ntsc_scales[0].height;
 912
 913         scale = tw9910_ntsc_scales;
 914         for (i = 0; i < ARRAY_SIZE(tw9910_ntsc_scales); i++) {
 915                 icd->width_max  = max(scale[i].width,  icd->width_max);
 916                 icd->width_min  = min(scale[i].width,  icd->width_min);
 917                 icd->height_max = max(scale[i].height, icd->height_max);
 918                 icd->height_min = min(scale[i].height, icd->height_min);
 919         }
 920         scale = tw9910_pal_scales;
 921         for (i = 0; i < ARRAY_SIZE(tw9910_pal_scales); i++) {
 922                 icd->width_max  = max(scale[i].width,  icd->width_max);
 923                 icd->width_min  = min(scale[i].width,  icd->width_min);
 924                 icd->height_max = max(scale[i].height, icd->height_max);
 925                 icd->height_min = min(scale[i].height, icd->height_min);
 926         }
 927
 928         ret = soc_camera_device_register(icd);
 929
 930         if (ret) {
 931                 i2c_set_clientdata(client, NULL);
 932                 kfree(priv);
 933         }
 934
 935         return ret;
 936 }
 937
 938 static int tw9910_remove(struct i2c_client *client)
 939 {
 940         struct tw9910_priv *priv = i2c_get_clientdata(client);
 941
 942         soc_camera_device_unregister(&priv->icd);
 943         i2c_set_clientdata(client, NULL);
 944         kfree(priv);
 945         return 0;
 946 }
 947
 948 static const struct i2c_device_id tw9910_id[] = {
 949         { "tw9910", 0 },
 950         { }
 951 };
 952 MODULE_DEVICE_TABLE(i2c, tw9910_id);
 953
 954 static struct i2c_driver tw9910_i2c_driver = {
 955         .driver = {
 956                 .name = "tw9910",
 957         },
 958         .probe    = tw9910_probe,
 959         .remove   = tw9910_remove,
 960         .id_table = tw9910_id,
 961 };
 962
 963 /*
 964  * module function
 965  */
 966 static int __init tw9910_module_init(void)
 967 {
 968         return i2c_add_driver(&tw9910_i2c_driver);
 969 }
 970
 971 static void __exit tw9910_module_exit(void)
 972 {
 973         i2c_del_driver(&tw9910_i2c_driver);
 974 }
 975
 976 module_init(tw9910_module_init);
 977 module_exit(tw9910_module_exit);
 978
 979 MODULE_DESCRIPTION("SoC Camera driver for tw9910");
 980 MODULE_AUTHOR("Kuninori Morimoto");
 981 MODULE_LICENSE("GPL v2");