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         const struct tw9910_scale_ctrl *scale;
 228 };
 229
 230 /*
 231  * register settings
 232  */
 233
 234 #define ENDMARKER { 0xff, 0xff }
 235
 236 static const struct regval_list tw9910_default_regs[] =
 237 {
 238         { OPFORM,  0x00 },
 239         { OUTCTR1, VSP_LO | VSSL_VVALID | HSP_HI | HSSL_HSYNC },
 240         ENDMARKER,
 241 };
 242
 243 static const struct soc_camera_data_format tw9910_color_fmt[] = {
 244         {
 245                 .name       = "VYUY",
 246                 .fourcc     = V4L2_PIX_FMT_VYUY,
 247                 .depth      = 16,
 248                 .colorspace = V4L2_COLORSPACE_SMPTE170M,
 249         }
 250 };
 251
 252 static const struct tw9910_scale_ctrl tw9910_ntsc_scales[] = {
 253         {
 254                 .name   = "NTSC SQ",
 255                 .width  = 640,
 256                 .height = 480,
 257                 .hscale = 0x0100,
 258                 .vscale = 0x0100,
 259         },
 260         {
 261                 .name   = "NTSC CCIR601",
 262                 .width  = 720,
 263                 .height = 480,
 264                 .hscale = 0x0100,
 265                 .vscale = 0x0100,
 266         },
 267         {
 268                 .name   = "NTSC SQ (CIF)",
 269                 .width  = 320,
 270                 .height = 240,
 271                 .hscale = 0x0200,
 272                 .vscale = 0x0200,
 273         },
 274         {
 275                 .name   = "NTSC CCIR601 (CIF)",
 276                 .width  = 360,
 277                 .height = 240,
 278                 .hscale = 0x0200,
 279                 .vscale = 0x0200,
 280         },
 281         {
 282                 .name   = "NTSC SQ (QCIF)",
 283                 .width  = 160,
 284                 .height = 120,
 285                 .hscale = 0x0400,
 286                 .vscale = 0x0400,
 287         },
 288         {
 289                 .name   = "NTSC CCIR601 (QCIF)",
 290                 .width  = 180,
 291                 .height = 120,
 292                 .hscale = 0x0400,
 293                 .vscale = 0x0400,
 294         },
 295 };
 296
 297 static const struct tw9910_scale_ctrl tw9910_pal_scales[] = {
 298         {
 299                 .name   = "PAL SQ",
 300                 .width  = 768,
 301                 .height = 576,
 302                 .hscale = 0x0100,
 303                 .vscale = 0x0100,
 304         },
 305         {
 306                 .name   = "PAL CCIR601",
 307                 .width  = 720,
 308                 .height = 576,
 309                 .hscale = 0x0100,
 310                 .vscale = 0x0100,
 311         },
 312         {
 313                 .name   = "PAL SQ (CIF)",
 314                 .width  = 384,
 315                 .height = 288,
 316                 .hscale = 0x0200,
 317                 .vscale = 0x0200,
 318         },
 319         {
 320                 .name   = "PAL CCIR601 (CIF)",
 321                 .width  = 360,
 322                 .height = 288,
 323                 .hscale = 0x0200,
 324                 .vscale = 0x0200,
 325         },
 326         {
 327                 .name   = "PAL SQ (QCIF)",
 328                 .width  = 192,
 329                 .height = 144,
 330                 .hscale = 0x0400,
 331                 .vscale = 0x0400,
 332         },
 333         {
 334                 .name   = "PAL CCIR601 (QCIF)",
 335                 .width  = 180,
 336                 .height = 144,
 337                 .hscale = 0x0400,
 338                 .vscale = 0x0400,
 339         },
 340 };
 341
 342 static const struct tw9910_cropping_ctrl tw9910_cropping_ctrl = {
 343         .vdelay  = 0x0012,
 344         .vactive = 0x00F0,
 345         .hdelay  = 0x0010,
 346         .hactive = 0x02D0,
 347 };
 348
 349 static const struct tw9910_hsync_ctrl tw9910_hsync_ctrl = {
 350         .start = 0x0260,
 351         .end   = 0x0300,
 352 };
 353
 354 /*
 355  * general function
 356  */
 357 static int tw9910_set_scale(struct i2c_client *client,
 358                             const struct tw9910_scale_ctrl *scale)
 359 {
 360         int ret;
 361
 362         ret = i2c_smbus_write_byte_data(client, SCALE_HI,
 363                                         (scale->vscale & 0x0F00) >> 4 |
 364                                         (scale->hscale & 0x0F00) >> 8);
 365         if (ret < 0)
 366                 return ret;
 367
 368         ret = i2c_smbus_write_byte_data(client, HSCALE_LO,
 369                                         scale->hscale & 0x00FF);
 370         if (ret < 0)
 371                 return ret;
 372
 373         ret = i2c_smbus_write_byte_data(client, VSCALE_LO,
 374                                         scale->vscale & 0x00FF);
 375
 376         return ret;
 377 }
 378
 379 static int tw9910_set_cropping(struct i2c_client *client,
 380                                const struct tw9910_cropping_ctrl *cropping)
 381 {
 382         int ret;
 383
 384         ret = i2c_smbus_write_byte_data(client, CROP_HI,
 385                                         (cropping->vdelay  & 0x0300) >> 2 |
 386                                         (cropping->vactive & 0x0300) >> 4 |
 387                                         (cropping->hdelay  & 0x0300) >> 6 |
 388                                         (cropping->hactive & 0x0300) >> 8);
 389         if (ret < 0)
 390                 return ret;
 391
 392         ret = i2c_smbus_write_byte_data(client, VDELAY_LO,
 393                                         cropping->vdelay & 0x00FF);
 394         if (ret < 0)
 395                 return ret;
 396
 397         ret = i2c_smbus_write_byte_data(client, VACTIVE_LO,
 398                                         cropping->vactive & 0x00FF);
 399         if (ret < 0)
 400                 return ret;
 401
 402         ret = i2c_smbus_write_byte_data(client, HDELAY_LO,
 403                                         cropping->hdelay & 0x00FF);
 404         if (ret < 0)
 405                 return ret;
 406
 407         ret = i2c_smbus_write_byte_data(client, HACTIVE_LO,
 408                                         cropping->hactive & 0x00FF);
 409
 410         return ret;
 411 }
 412
 413 static int tw9910_set_hsync(struct i2c_client *client,
 414                             const struct tw9910_hsync_ctrl *hsync)
 415 {
 416         int ret;
 417
 418         /* bit 10 - 3 */
 419         ret = i2c_smbus_write_byte_data(client, HSGEGIN,
 420                                         (hsync->start & 0x07F8) >> 3);
 421         if (ret < 0)
 422                 return ret;
 423
 424         /* bit 10 - 3 */
 425         ret = i2c_smbus_write_byte_data(client, HSEND,
 426                                         (hsync->end & 0x07F8) >> 3);
 427         if (ret < 0)
 428                 return ret;
 429
 430         /* bit 2 - 0 */
 431         ret = i2c_smbus_read_byte_data(client, HSLOWCTL);
 432         if (ret < 0)
 433                 return ret;
 434
 435         ret = i2c_smbus_write_byte_data(client, HSLOWCTL,
 436                                         (ret & 0x88)                 |
 437                                         (hsync->start & 0x0007) << 4 |
 438                                         (hsync->end   & 0x0007));
 439
 440         return ret;
 441 }
 442
 443 static int tw9910_write_array(struct i2c_client *client,
 444                               const struct regval_list *vals)
 445 {
 446         while (vals->reg_num != 0xff) {
 447                 int ret = i2c_smbus_write_byte_data(client,
 448                                                     vals->reg_num,
 449                                                     vals->value);
 450                 if (ret < 0)
 451                         return ret;
 452                 vals++;
 453         }
 454         return 0;
 455 }
 456
 457 static int tw9910_mask_set(struct i2c_client *client, u8 command,
 458                            u8 mask, u8 set)
 459 {
 460         s32 val = i2c_smbus_read_byte_data(client, command);
 461         if (val < 0)
 462                 return val;
 463
 464         val &= ~mask;
 465         val |= set & mask;
 466
 467         return i2c_smbus_write_byte_data(client, command, val);
 468 }
 469
 470 static void tw9910_reset(struct i2c_client *client)
 471 {
 472         i2c_smbus_write_byte_data(client, ACNTL1, SRESET);
 473         msleep(1);
 474 }
 475
 476 static const struct tw9910_scale_ctrl*
 477 tw9910_select_norm(struct soc_camera_device *icd, u32 width, u32 height)
 478 {
 479         const struct tw9910_scale_ctrl *scale;
 480         const struct tw9910_scale_ctrl *ret = NULL;
 481         v4l2_std_id norm = icd->vdev->current_norm;
 482         __u32 diff = 0xffffffff, tmp;
 483         int size, i;
 484
 485         if (norm & V4L2_STD_NTSC) {
 486                 scale = tw9910_ntsc_scales;
 487                 size = ARRAY_SIZE(tw9910_ntsc_scales);
 488         } else if (norm & V4L2_STD_PAL) {
 489                 scale = tw9910_pal_scales;
 490                 size = ARRAY_SIZE(tw9910_pal_scales);
 491         } else {
 492                 return NULL;
 493         }
 494
 495         for (i = 0; i < size; i++) {
 496                 tmp = abs(width - scale[i].width) +
 497                         abs(height - scale[i].height);
 498                 if (tmp < diff) {
 499                         diff = tmp;
 500                         ret = scale + i;
 501                 }
 502         }
 503
 504         return ret;
 505 }
 506
 507 /*
 508  * soc_camera_ops function
 509  */
 510 static int tw9910_init(struct soc_camera_device *icd)
 511 {
 512         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 513         struct soc_camera_link *icl = to_soc_camera_link(icd);
 514         int ret = 0;
 515
 516         if (icl->power) {
 517                 ret = icl->power(&client->dev, 1);
 518                 if (ret < 0)
 519                         return ret;
 520         }
 521
 522         if (icl->reset)
 523                 ret = icl->reset(&client->dev);
 524
 525         return ret;
 526 }
 527
 528 static int tw9910_release(struct soc_camera_device *icd)
 529 {
 530         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 531         struct soc_camera_link *icl = to_soc_camera_link(icd);
 532         int ret = 0;
 533
 534         if (icl->power)
 535                 ret = icl->power(&client->dev, 0);
 536
 537         return ret;
 538 }
 539
 540 static int tw9910_start_capture(struct soc_camera_device *icd)
 541 {
 542         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 543         struct tw9910_priv *priv = i2c_get_clientdata(client);
 544
 545         if (!priv->scale) {
 546                 dev_err(&icd->dev, "norm select error\n");
 547                 return -EPERM;
 548         }
 549
 550         dev_dbg(&icd->dev, "%s %dx%d\n",
 551                  priv->scale->name,
 552                  priv->scale->width,
 553                  priv->scale->height);
 554
 555         return 0;
 556 }
 557
 558 static int tw9910_stop_capture(struct soc_camera_device *icd)
 559 {
 560         return 0;
 561 }
 562
 563 static int tw9910_set_bus_param(struct soc_camera_device *icd,
 564                                 unsigned long flags)
 565 {
 566         return 0;
 567 }
 568
 569 static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
 570 {
 571         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 572         struct tw9910_priv *priv = i2c_get_clientdata(client);
 573         struct soc_camera_link *icl = to_soc_camera_link(icd);
 574         unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
 575                 SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
 576                 SOCAM_DATA_ACTIVE_HIGH | priv->info->buswidth;
 577
 578         return soc_camera_apply_sensor_flags(icl, flags);
 579 }
 580
 581 static int tw9910_get_chip_id(struct soc_camera_device *icd,
 582                               struct v4l2_dbg_chip_ident *id)
 583 {
 584         id->ident = V4L2_IDENT_TW9910;
 585         id->revision = 0;
 586
 587         return 0;
 588 }
 589
 590 static int tw9910_set_std(struct soc_camera_device *icd,
 591                           v4l2_std_id *a)
 592 {
 593         int ret = -EINVAL;
 594
 595         if (*a & (V4L2_STD_NTSC | V4L2_STD_PAL))
 596                 ret = 0;
 597
 598         return ret;
 599 }
 600
 601 static int tw9910_enum_input(struct soc_camera_device *icd,
 602                              struct v4l2_input *inp)
 603 {
 604         inp->type = V4L2_INPUT_TYPE_TUNER;
 605         inp->std  = V4L2_STD_UNKNOWN;
 606         strcpy(inp->name, "Video");
 607
 608         return 0;
 609 }
 610
 611 #ifdef CONFIG_VIDEO_ADV_DEBUG
 612 static int tw9910_get_register(struct soc_camera_device *icd,
 613                                struct v4l2_dbg_register *reg)
 614 {
 615         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 616         int ret;
 617
 618         if (reg->reg > 0xff)
 619                 return -EINVAL;
 620
 621         ret = i2c_smbus_read_byte_data(client, reg->reg);
 622         if (ret < 0)
 623                 return ret;
 624
 625         /* ret      = int
 626          * reg->val = __u64
 627          */
 628         reg->val = (__u64)ret;
 629
 630         return 0;
 631 }
 632
 633 static int tw9910_set_register(struct soc_camera_device *icd,
 634                                struct v4l2_dbg_register *reg)
 635 {
 636         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 637
 638         if (reg->reg > 0xff ||
 639             reg->val > 0xff)
 640                 return -EINVAL;
 641
 642         return i2c_smbus_write_byte_data(client, reg->reg, reg->val);
 643 }
 644 #endif
 645
 646 static int tw9910_set_crop(struct soc_camera_device *icd,
 647                            struct v4l2_rect *rect)
 648 {
 649         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 650         struct tw9910_priv *priv = i2c_get_clientdata(client);
 651         int                 ret  = -EINVAL;
 652         u8                  val;
 653
 654         /*
 655          * select suitable norm
 656          */
 657         priv->scale = tw9910_select_norm(icd, rect->width, rect->height);
 658         if (!priv->scale)
 659                 goto tw9910_set_fmt_error;
 660
 661         /*
 662          * reset hardware
 663          */
 664         tw9910_reset(client);
 665         ret = tw9910_write_array(client, tw9910_default_regs);
 666         if (ret < 0)
 667                 goto tw9910_set_fmt_error;
 668
 669         /*
 670          * set bus width
 671          */
 672         val = 0x00;
 673         if (SOCAM_DATAWIDTH_16 == priv->info->buswidth)
 674                 val = LEN;
 675
 676         ret = tw9910_mask_set(client, OPFORM, LEN, val);
 677         if (ret < 0)
 678                 goto tw9910_set_fmt_error;
 679
 680         /*
 681          * select MPOUT behavior
 682          */
 683         switch (priv->info->mpout) {
 684         case TW9910_MPO_VLOSS:
 685                 val = RTSEL_VLOSS; break;
 686         case TW9910_MPO_HLOCK:
 687                 val = RTSEL_HLOCK; break;
 688         case TW9910_MPO_SLOCK:
 689                 val = RTSEL_SLOCK; break;
 690         case TW9910_MPO_VLOCK:
 691                 val = RTSEL_VLOCK; break;
 692         case TW9910_MPO_MONO:
 693                 val = RTSEL_MONO;  break;
 694         case TW9910_MPO_DET50:
 695                 val = RTSEL_DET50; break;
 696         case TW9910_MPO_FIELD:
 697                 val = RTSEL_FIELD; break;
 698         case TW9910_MPO_RTCO:
 699                 val = RTSEL_RTCO;  break;
 700         default:
 701                 val = 0;
 702         }
 703
 704         ret = tw9910_mask_set(client, VBICNTL, RTSEL_MASK, val);
 705         if (ret < 0)
 706                 goto tw9910_set_fmt_error;
 707
 708         /*
 709          * set scale
 710          */
 711         ret = tw9910_set_scale(client, priv->scale);
 712         if (ret < 0)
 713                 goto tw9910_set_fmt_error;
 714
 715         /*
 716          * set cropping
 717          */
 718         ret = tw9910_set_cropping(client, &tw9910_cropping_ctrl);
 719         if (ret < 0)
 720                 goto tw9910_set_fmt_error;
 721
 722         /*
 723          * set hsync
 724          */
 725         ret = tw9910_set_hsync(client, &tw9910_hsync_ctrl);
 726         if (ret < 0)
 727                 goto tw9910_set_fmt_error;
 728
 729         return ret;
 730
 731 tw9910_set_fmt_error:
 732
 733         tw9910_reset(client);
 734         priv->scale = NULL;
 735
 736         return ret;
 737 }
 738
 739 static int tw9910_set_fmt(struct soc_camera_device *icd,
 740                           struct v4l2_format *f)
 741 {
 742         struct v4l2_pix_format *pix = &f->fmt.pix;
 743         struct v4l2_rect rect = {
 744                 .left   = icd->x_current,
 745                 .top    = icd->y_current,
 746                 .width  = pix->width,
 747                 .height = pix->height,
 748         };
 749         int i;
 750
 751         /*
 752          * check color format
 753          */
 754         for (i = 0; i < ARRAY_SIZE(tw9910_color_fmt); i++)
 755                 if (pix->pixelformat == tw9910_color_fmt[i].fourcc)
 756                         break;
 757
 758         if (i == ARRAY_SIZE(tw9910_color_fmt))
 759                 return -EINVAL;
 760
 761         return tw9910_set_crop(icd, &rect);
 762 }
 763
 764 static int tw9910_try_fmt(struct soc_camera_device *icd,
 765                           struct v4l2_format *f)
 766 {
 767         struct v4l2_pix_format *pix = &f->fmt.pix;
 768         const struct tw9910_scale_ctrl *scale;
 769
 770         if (V4L2_FIELD_ANY == pix->field) {
 771                 pix->field = V4L2_FIELD_INTERLACED;
 772         } else if (V4L2_FIELD_INTERLACED != pix->field) {
 773                 dev_err(&icd->dev, "Field type invalid.\n");
 774                 return -EINVAL;
 775         }
 776
 777         /*
 778          * select suitable norm
 779          */
 780         scale = tw9910_select_norm(icd, pix->width, pix->height);
 781         if (!scale)
 782                 return -EINVAL;
 783
 784         pix->width  = scale->width;
 785         pix->height = scale->height;
 786
 787         return 0;
 788 }
 789
 790 static int tw9910_video_probe(struct soc_camera_device *icd,
 791                               struct i2c_client *client)
 792 {
 793         struct tw9910_priv *priv = i2c_get_clientdata(client);
 794         s32 val;
 795         int ret;
 796
 797         /*
 798          * We must have a parent by now. And it cannot be a wrong one.
 799          * So this entire test is completely redundant.
 800          */
 801         if (!icd->dev.parent ||
 802             to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
 803                 return -ENODEV;
 804
 805         /*
 806          * tw9910 only use 8 or 16 bit bus width
 807          */
 808         if (SOCAM_DATAWIDTH_16 != priv->info->buswidth &&
 809             SOCAM_DATAWIDTH_8  != priv->info->buswidth) {
 810                 dev_err(&icd->dev, "bus width error\n");
 811                 return -ENODEV;
 812         }
 813
 814         icd->formats     = tw9910_color_fmt;
 815         icd->num_formats = ARRAY_SIZE(tw9910_color_fmt);
 816
 817         /* Switch master clock on */
 818         ret = soc_camera_video_start(icd, &client->dev);
 819         if (ret)
 820                 return ret;
 821
 822         /*
 823          * check and show Product ID
 824          */
 825         val = i2c_smbus_read_byte_data(client, ID);
 826
 827         soc_camera_video_stop(icd);
 828
 829         if (0x0B != GET_ID(val) ||
 830             0x00 != GET_ReV(val)) {
 831                 dev_err(&icd->dev,
 832                         "Product ID error %x:%x\n", GET_ID(val), GET_ReV(val));
 833                 return -ENODEV;
 834         }
 835
 836         dev_info(&icd->dev,
 837                  "tw9910 Product ID %0x:%0x\n", GET_ID(val), GET_ReV(val));
 838
 839         icd->vdev->tvnorms      = V4L2_STD_NTSC | V4L2_STD_PAL;
 840         icd->vdev->current_norm = V4L2_STD_NTSC;
 841
 842         return ret;
 843 }
 844
 845 static struct soc_camera_ops tw9910_ops = {
 846         .owner                  = THIS_MODULE,
 847         .init                   = tw9910_init,
 848         .release                = tw9910_release,
 849         .start_capture          = tw9910_start_capture,
 850         .stop_capture           = tw9910_stop_capture,
 851         .set_crop               = tw9910_set_crop,
 852         .set_fmt                = tw9910_set_fmt,
 853         .try_fmt                = tw9910_try_fmt,
 854         .set_bus_param          = tw9910_set_bus_param,
 855         .query_bus_param        = tw9910_query_bus_param,
 856         .get_chip_id            = tw9910_get_chip_id,
 857         .set_std                = tw9910_set_std,
 858         .enum_input             = tw9910_enum_input,
 859 #ifdef CONFIG_VIDEO_ADV_DEBUG
 860         .get_register           = tw9910_get_register,
 861         .set_register           = tw9910_set_register,
 862 #endif
 863 };
 864
 865 /*
 866  * i2c_driver function
 867  */
 868
 869 static int tw9910_probe(struct i2c_client *client,
 870                         const struct i2c_device_id *did)
 871
 872 {
 873         struct tw9910_priv             *priv;
 874         struct tw9910_video_info       *info;
 875         struct soc_camera_device       *icd = client->dev.platform_data;
 876         struct i2c_adapter             *adapter =
 877                 to_i2c_adapter(client->dev.parent);
 878         struct soc_camera_link         *icl;
 879         const struct tw9910_scale_ctrl *scale;
 880         int                             i, ret;
 881
 882         if (!icd) {
 883                 dev_err(&client->dev, "TW9910: missing soc-camera data!\n");
 884                 return -EINVAL;
 885         }
 886
 887         icl = to_soc_camera_link(icd);
 888         if (!icl)
 889                 return -EINVAL;
 890
 891         info = container_of(icl, struct tw9910_video_info, link);
 892
 893         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
 894                 dev_err(&client->dev,
 895                         "I2C-Adapter doesn't support "
 896                         "I2C_FUNC_SMBUS_BYTE_DATA\n");
 897                 return -EIO;
 898         }
 899
 900         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 901         if (!priv)
 902                 return -ENOMEM;
 903
 904         priv->info   = info;
 905         i2c_set_clientdata(client, priv);
 906
 907         icd->ops     = &tw9910_ops;
 908         icd->iface   = info->link.bus_id;
 909
 910         /*
 911          * set width and height
 912          */
 913         icd->width_max  = tw9910_ntsc_scales[0].width; /* set default */
 914         icd->width_min  = tw9910_ntsc_scales[0].width;
 915         icd->height_max = tw9910_ntsc_scales[0].height;
 916         icd->height_min = tw9910_ntsc_scales[0].height;
 917
 918         scale = tw9910_ntsc_scales;
 919         for (i = 0; i < ARRAY_SIZE(tw9910_ntsc_scales); i++) {
 920                 icd->width_max  = max(scale[i].width,  icd->width_max);
 921                 icd->width_min  = min(scale[i].width,  icd->width_min);
 922                 icd->height_max = max(scale[i].height, icd->height_max);
 923                 icd->height_min = min(scale[i].height, icd->height_min);
 924         }
 925         scale = tw9910_pal_scales;
 926         for (i = 0; i < ARRAY_SIZE(tw9910_pal_scales); i++) {
 927                 icd->width_max  = max(scale[i].width,  icd->width_max);
 928                 icd->width_min  = min(scale[i].width,  icd->width_min);
 929                 icd->height_max = max(scale[i].height, icd->height_max);
 930                 icd->height_min = min(scale[i].height, icd->height_min);
 931         }
 932
 933         ret = tw9910_video_probe(icd, client);
 934         if (ret) {
 935                 icd->ops = NULL;
 936                 i2c_set_clientdata(client, NULL);
 937                 kfree(priv);
 938         }
 939
 940         return ret;
 941 }
 942
 943 static int tw9910_remove(struct i2c_client *client)
 944 {
 945         struct tw9910_priv *priv = i2c_get_clientdata(client);
 946         struct soc_camera_device *icd = client->dev.platform_data;
 947
 948         icd->ops = NULL;
 949         i2c_set_clientdata(client, NULL);
 950         kfree(priv);
 951         return 0;
 952 }
 953
 954 static const struct i2c_device_id tw9910_id[] = {
 955         { "tw9910", 0 },
 956         { }
 957 };
 958 MODULE_DEVICE_TABLE(i2c, tw9910_id);
 959
 960 static struct i2c_driver tw9910_i2c_driver = {
 961         .driver = {
 962                 .name = "tw9910",
 963         },
 964         .probe    = tw9910_probe,
 965         .remove   = tw9910_remove,
 966         .id_table = tw9910_id,
 967 };
 968
 969 /*
 970  * module function
 971  */
 972 static int __init tw9910_module_init(void)
 973 {
 974         return i2c_add_driver(&tw9910_i2c_driver);
 975 }
 976
 977 static void __exit tw9910_module_exit(void)
 978 {
 979         i2c_del_driver(&tw9910_i2c_driver);
 980 }
 981
 982 module_init(tw9910_module_init);
 983 module_exit(tw9910_module_exit);
 984
 985 MODULE_DESCRIPTION("SoC Camera driver for tw9910");
 986 MODULE_AUTHOR("Kuninori Morimoto");
 987 MODULE_LICENSE("GPL v2");