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/v4l2-mediabus.h> 26#include <linux/videodev2.h> 27 28#include <media/soc_camera.h> 29#include <media/tw9910.h> 30#include <media/v4l2-clk.h> 31#include <media/v4l2-subdev.h> 32 33#define GET_ID(val) ((val & 0xF8) >> 3) 34#define GET_REV(val) (val & 0x07) 35 36/* 37 * register offset 38 */ 39#define ID 0x00 /* Product ID Code Register */ 40#define STATUS1 0x01 /* Chip Status Register I */ 41#define INFORM 0x02 /* Input Format */ 42#define OPFORM 0x03 /* Output Format Control Register */ 43#define DLYCTR 0x04 /* Hysteresis and HSYNC Delay Control */ 44#define OUTCTR1 0x05 /* Output Control I */ 45#define ACNTL1 0x06 /* Analog Control Register 1 */ 46#define CROP_HI 0x07 /* Cropping Register, High */ 47#define VDELAY_LO 0x08 /* Vertical Delay Register, Low */ 48#define VACTIVE_LO 0x09 /* Vertical Active Register, Low */ 49#define HDELAY_LO 0x0A /* Horizontal Delay Register, Low */ 50#define HACTIVE_LO 0x0B /* Horizontal Active Register, Low */ 51#define CNTRL1 0x0C /* Control Register I */ 52#define VSCALE_LO 0x0D /* Vertical Scaling Register, Low */ 53#define SCALE_HI 0x0E /* Scaling Register, High */ 54#define HSCALE_LO 0x0F /* Horizontal Scaling Register, Low */ 55#define BRIGHT 0x10 /* BRIGHTNESS Control Register */ 56#define CONTRAST 0x11 /* CONTRAST Control Register */ 57#define SHARPNESS 0x12 /* SHARPNESS Control Register I */ 58#define SAT_U 0x13 /* Chroma (U) Gain Register */ 59#define SAT_V 0x14 /* Chroma (V) Gain Register */ 60#define HUE 0x15 /* Hue Control Register */ 61#define CORING1 0x17 62#define CORING2 0x18 /* Coring and IF compensation */ 63#define VBICNTL 0x19 /* VBI Control Register */ 64#define ACNTL2 0x1A /* Analog Control 2 */ 65#define OUTCTR2 0x1B /* Output Control 2 */ 66#define SDT 0x1C /* Standard Selection */ 67#define SDTR 0x1D /* Standard Recognition */ 68#define TEST 0x1F /* Test Control Register */ 69#define CLMPG 0x20 /* Clamping Gain */ 70#define IAGC 0x21 /* Individual AGC Gain */ 71#define AGCGAIN 0x22 /* AGC Gain */ 72#define PEAKWT 0x23 /* White Peak Threshold */ 73#define CLMPL 0x24 /* Clamp level */ 74#define SYNCT 0x25 /* Sync Amplitude */ 75#define MISSCNT 0x26 /* Sync Miss Count Register */ 76#define PCLAMP 0x27 /* Clamp Position Register */ 77#define VCNTL1 0x28 /* Vertical Control I */ 78#define VCNTL2 0x29 /* Vertical Control II */ 79#define CKILL 0x2A /* Color Killer Level Control */ 80#define COMB 0x2B /* Comb Filter Control */ 81#define LDLY 0x2C /* Luma Delay and H Filter Control */ 82#define MISC1 0x2D /* Miscellaneous Control I */ 83#define LOOP 0x2E /* LOOP Control Register */ 84#define MISC2 0x2F /* Miscellaneous Control II */ 85#define MVSN 0x30 /* Macrovision Detection */ 86#define STATUS2 0x31 /* Chip STATUS II */ 87#define HFREF 0x32 /* H monitor */ 88#define CLMD 0x33 /* CLAMP MODE */ 89#define IDCNTL 0x34 /* ID Detection Control */ 90#define CLCNTL1 0x35 /* Clamp Control I */ 91#define ANAPLLCTL 0x4C 92#define VBIMIN 0x4D 93#define HSLOWCTL 0x4E 94#define WSS3 0x4F 95#define FILLDATA 0x50 96#define SDID 0x51 97#define DID 0x52 98#define WSS1 0x53 99#define WSS2 0x54 100#define VVBI 0x55 101#define LCTL6 0x56 102#define LCTL7 0x57 103#define LCTL8 0x58 104#define LCTL9 0x59 105#define LCTL10 0x5A 106#define LCTL11 0x5B 107#define LCTL12 0x5C 108#define LCTL13 0x5D 109#define LCTL14 0x5E 110#define LCTL15 0x5F 111#define LCTL16 0x60 112#define LCTL17 0x61 113#define LCTL18 0x62 114#define LCTL19 0x63 115#define LCTL20 0x64 116#define LCTL21 0x65 117#define LCTL22 0x66 118#define LCTL23 0x67 119#define LCTL24 0x68 120#define LCTL25 0x69 121#define LCTL26 0x6A 122#define HSBEGIN 0x6B 123#define HSEND 0x6C 124#define OVSDLY 0x6D 125#define OVSEND 0x6E 126#define VBIDELAY 0x6F 127 128/* 129 * register detail 130 */ 131 132/* INFORM */ 133#define FC27_ON 0x40 /* 1 : Input crystal clock frequency is 27MHz */ 134#define FC27_FF 0x00 /* 0 : Square pixel mode. */ 135 /* Must use 24.54MHz for 60Hz field rate */ 136 /* source or 29.5MHz for 50Hz field rate */ 137#define IFSEL_S 0x10 /* 01 : S-video decoding */ 138#define IFSEL_C 0x00 /* 00 : Composite video decoding */ 139 /* Y input video selection */ 140#define YSEL_M0 0x00 /* 00 : Mux0 selected */ 141#define YSEL_M1 0x04 /* 01 : Mux1 selected */ 142#define YSEL_M2 0x08 /* 10 : Mux2 selected */ 143#define YSEL_M3 0x10 /* 11 : Mux3 selected */ 144 145/* OPFORM */ 146#define MODE 0x80 /* 0 : CCIR601 compatible YCrCb 4:2:2 format */ 147 /* 1 : ITU-R-656 compatible data sequence format */ 148#define LEN 0x40 /* 0 : 8-bit YCrCb 4:2:2 output format */ 149 /* 1 : 16-bit YCrCb 4:2:2 output format.*/ 150#define LLCMODE 0x20 /* 1 : LLC output mode. */ 151 /* 0 : free-run output mode */ 152#define AINC 0x10 /* Serial interface auto-indexing control */ 153 /* 0 : auto-increment */ 154 /* 1 : non-auto */ 155#define VSCTL 0x08 /* 1 : Vertical out ctrl by DVALID */ 156 /* 0 : Vertical out ctrl by HACTIVE and DVALID */ 157#define OEN_TRI_SEL_MASK 0x07 158#define OEN_TRI_SEL_ALL_ON 0x00 /* Enable output for Rev0/Rev1 */ 159#define OEN_TRI_SEL_ALL_OFF_r0 0x06 /* All tri-stated for Rev0 */ 160#define OEN_TRI_SEL_ALL_OFF_r1 0x07 /* All tri-stated for Rev1 */ 161 162/* OUTCTR1 */ 163#define VSP_LO 0x00 /* 0 : VS pin output polarity is active low */ 164#define VSP_HI 0x80 /* 1 : VS pin output polarity is active high. */ 165 /* VS pin output control */ 166#define VSSL_VSYNC 0x00 /* 0 : VSYNC */ 167#define VSSL_VACT 0x10 /* 1 : VACT */ 168#define VSSL_FIELD 0x20 /* 2 : FIELD */ 169#define VSSL_VVALID 0x30 /* 3 : VVALID */ 170#define VSSL_ZERO 0x70 /* 7 : 0 */ 171#define HSP_LOW 0x00 /* 0 : HS pin output polarity is active low */ 172#define HSP_HI 0x08 /* 1 : HS pin output polarity is active high.*/ 173 /* HS pin output control */ 174#define HSSL_HACT 0x00 /* 0 : HACT */ 175#define HSSL_HSYNC 0x01 /* 1 : HSYNC */ 176#define HSSL_DVALID 0x02 /* 2 : DVALID */ 177#define HSSL_HLOCK 0x03 /* 3 : HLOCK */ 178#define HSSL_ASYNCW 0x04 /* 4 : ASYNCW */ 179#define HSSL_ZERO 0x07 /* 7 : 0 */ 180 181/* ACNTL1 */ 182#define SRESET 0x80 /* resets the device to its default state 183 * but all register content remain unchanged. 184 * This bit is self-resetting. 185 */ 186#define ACNTL1_PDN_MASK 0x0e 187#define CLK_PDN 0x08 /* system clock power down */ 188#define Y_PDN 0x04 /* Luma ADC power down */ 189#define C_PDN 0x02 /* Chroma ADC power down */ 190 191/* ACNTL2 */ 192#define ACNTL2_PDN_MASK 0x40 193#define PLL_PDN 0x40 /* PLL power down */ 194 195/* VBICNTL */ 196 197/* RTSEL : control the real time signal output from the MPOUT pin */ 198#define RTSEL_MASK 0x07 199#define RTSEL_VLOSS 0x00 /* 0000 = Video loss */ 200#define RTSEL_HLOCK 0x01 /* 0001 = H-lock */ 201#define RTSEL_SLOCK 0x02 /* 0010 = S-lock */ 202#define RTSEL_VLOCK 0x03 /* 0011 = V-lock */ 203#define RTSEL_MONO 0x04 /* 0100 = MONO */ 204#define RTSEL_DET50 0x05 /* 0101 = DET50 */ 205#define RTSEL_FIELD 0x06 /* 0110 = FIELD */ 206#define RTSEL_RTCO 0x07 /* 0111 = RTCO ( Real Time Control ) */ 207 208/* HSYNC start and end are constant for now */ 209#define HSYNC_START 0x0260 210#define HSYNC_END 0x0300 211 212/* 213 * structure 214 */ 215 216struct regval_list { 217 unsigned char reg_num; 218 unsigned char value; 219}; 220 221struct tw9910_scale_ctrl { 222 char *name; 223 unsigned short width; 224 unsigned short height; 225 u16 hscale; 226 u16 vscale; 227}; 228 229struct tw9910_priv { 230 struct v4l2_subdev subdev; 231 struct v4l2_clk *clk; 232 struct tw9910_video_info *info; 233 const struct tw9910_scale_ctrl *scale; 234 v4l2_std_id norm; 235 u32 revision; 236}; 237 238static const struct tw9910_scale_ctrl tw9910_ntsc_scales[] = { 239 { 240 .name = "NTSC SQ", 241 .width = 640, 242 .height = 480, 243 .hscale = 0x0100, 244 .vscale = 0x0100, 245 }, 246 { 247 .name = "NTSC CCIR601", 248 .width = 720, 249 .height = 480, 250 .hscale = 0x0100, 251 .vscale = 0x0100, 252 }, 253 { 254 .name = "NTSC SQ (CIF)", 255 .width = 320, 256 .height = 240, 257 .hscale = 0x0200, 258 .vscale = 0x0200, 259 }, 260 { 261 .name = "NTSC CCIR601 (CIF)", 262 .width = 360, 263 .height = 240, 264 .hscale = 0x0200, 265 .vscale = 0x0200, 266 }, 267 { 268 .name = "NTSC SQ (QCIF)", 269 .width = 160, 270 .height = 120, 271 .hscale = 0x0400, 272 .vscale = 0x0400, 273 }, 274 { 275 .name = "NTSC CCIR601 (QCIF)", 276 .width = 180, 277 .height = 120, 278 .hscale = 0x0400, 279 .vscale = 0x0400, 280 }, 281}; 282 283static const struct tw9910_scale_ctrl tw9910_pal_scales[] = { 284 { 285 .name = "PAL SQ", 286 .width = 768, 287 .height = 576, 288 .hscale = 0x0100, 289 .vscale = 0x0100, 290 }, 291 { 292 .name = "PAL CCIR601", 293 .width = 720, 294 .height = 576, 295 .hscale = 0x0100, 296 .vscale = 0x0100, 297 }, 298 { 299 .name = "PAL SQ (CIF)", 300 .width = 384, 301 .height = 288, 302 .hscale = 0x0200, 303 .vscale = 0x0200, 304 }, 305 { 306 .name = "PAL CCIR601 (CIF)", 307 .width = 360, 308 .height = 288, 309 .hscale = 0x0200, 310 .vscale = 0x0200, 311 }, 312 { 313 .name = "PAL SQ (QCIF)", 314 .width = 192, 315 .height = 144, 316 .hscale = 0x0400, 317 .vscale = 0x0400, 318 }, 319 { 320 .name = "PAL CCIR601 (QCIF)", 321 .width = 180, 322 .height = 144, 323 .hscale = 0x0400, 324 .vscale = 0x0400, 325 }, 326}; 327 328/* 329 * general function 330 */ 331static struct tw9910_priv *to_tw9910(const struct i2c_client *client) 332{ 333 return container_of(i2c_get_clientdata(client), struct tw9910_priv, 334 subdev); 335} 336 337static int tw9910_mask_set(struct i2c_client *client, u8 command, 338 u8 mask, u8 set) 339{ 340 s32 val = i2c_smbus_read_byte_data(client, command); 341 if (val < 0) 342 return val; 343 344 val &= ~mask; 345 val |= set & mask; 346 347 return i2c_smbus_write_byte_data(client, command, val); 348} 349 350static int tw9910_set_scale(struct i2c_client *client, 351 const struct tw9910_scale_ctrl *scale) 352{ 353 int ret; 354 355 ret = i2c_smbus_write_byte_data(client, SCALE_HI, 356 (scale->vscale & 0x0F00) >> 4 | 357 (scale->hscale & 0x0F00) >> 8); 358 if (ret < 0) 359 return ret; 360 361 ret = i2c_smbus_write_byte_data(client, HSCALE_LO, 362 scale->hscale & 0x00FF); 363 if (ret < 0) 364 return ret; 365 366 ret = i2c_smbus_write_byte_data(client, VSCALE_LO, 367 scale->vscale & 0x00FF); 368 369 return ret; 370} 371 372static int tw9910_set_hsync(struct i2c_client *client) 373{ 374 struct tw9910_priv *priv = to_tw9910(client); 375 int ret; 376 377 /* bit 10 - 3 */ 378 ret = i2c_smbus_write_byte_data(client, HSBEGIN, 379 (HSYNC_START & 0x07F8) >> 3); 380 if (ret < 0) 381 return ret; 382 383 /* bit 10 - 3 */ 384 ret = i2c_smbus_write_byte_data(client, HSEND, 385 (HSYNC_END & 0x07F8) >> 3); 386 if (ret < 0) 387 return ret; 388 389 /* So far only revisions 0 and 1 have been seen */ 390 /* bit 2 - 0 */ 391 if (1 == priv->revision) 392 ret = tw9910_mask_set(client, HSLOWCTL, 0x77, 393 (HSYNC_START & 0x0007) << 4 | 394 (HSYNC_END & 0x0007)); 395 396 return ret; 397} 398 399static void tw9910_reset(struct i2c_client *client) 400{ 401 tw9910_mask_set(client, ACNTL1, SRESET, SRESET); 402 msleep(1); 403} 404 405static int tw9910_power(struct i2c_client *client, int enable) 406{ 407 int ret; 408 u8 acntl1; 409 u8 acntl2; 410 411 if (enable) { 412 acntl1 = 0; 413 acntl2 = 0; 414 } else { 415 acntl1 = CLK_PDN | Y_PDN | C_PDN; 416 acntl2 = PLL_PDN; 417 } 418 419 ret = tw9910_mask_set(client, ACNTL1, ACNTL1_PDN_MASK, acntl1); 420 if (ret < 0) 421 return ret; 422 423 return tw9910_mask_set(client, ACNTL2, ACNTL2_PDN_MASK, acntl2); 424} 425 426static const struct tw9910_scale_ctrl *tw9910_select_norm(v4l2_std_id norm, 427 u32 width, u32 height) 428{ 429 const struct tw9910_scale_ctrl *scale; 430 const struct tw9910_scale_ctrl *ret = NULL; 431 __u32 diff = 0xffffffff, tmp; 432 int size, i; 433 434 if (norm & V4L2_STD_NTSC) { 435 scale = tw9910_ntsc_scales; 436 size = ARRAY_SIZE(tw9910_ntsc_scales); 437 } else if (norm & V4L2_STD_PAL) { 438 scale = tw9910_pal_scales; 439 size = ARRAY_SIZE(tw9910_pal_scales); 440 } else { 441 return NULL; 442 } 443 444 for (i = 0; i < size; i++) { 445 tmp = abs(width - scale[i].width) + 446 abs(height - scale[i].height); 447 if (tmp < diff) { 448 diff = tmp; 449 ret = scale + i; 450 } 451 } 452 453 return ret; 454} 455 456/* 457 * subdevice operations 458 */ 459static int tw9910_s_stream(struct v4l2_subdev *sd, int enable) 460{ 461 struct i2c_client *client = v4l2_get_subdevdata(sd); 462 struct tw9910_priv *priv = to_tw9910(client); 463 u8 val; 464 int ret; 465 466 if (!enable) { 467 switch (priv->revision) { 468 case 0: 469 val = OEN_TRI_SEL_ALL_OFF_r0; 470 break; 471 case 1: 472 val = OEN_TRI_SEL_ALL_OFF_r1; 473 break; 474 default: 475 dev_err(&client->dev, "un-supported revision\n"); 476 return -EINVAL; 477 } 478 } else { 479 val = OEN_TRI_SEL_ALL_ON; 480 481 if (!priv->scale) { 482 dev_err(&client->dev, "norm select error\n"); 483 return -EPERM; 484 } 485 486 dev_dbg(&client->dev, "%s %dx%d\n", 487 priv->scale->name, 488 priv->scale->width, 489 priv->scale->height); 490 } 491 492 ret = tw9910_mask_set(client, OPFORM, OEN_TRI_SEL_MASK, val); 493 if (ret < 0) 494 return ret; 495 496 return tw9910_power(client, enable); 497} 498 499static int tw9910_g_std(struct v4l2_subdev *sd, v4l2_std_id *norm) 500{ 501 struct i2c_client *client = v4l2_get_subdevdata(sd); 502 struct tw9910_priv *priv = to_tw9910(client); 503 504 *norm = priv->norm; 505 506 return 0; 507} 508 509static int tw9910_s_std(struct v4l2_subdev *sd, v4l2_std_id norm) 510{ 511 struct i2c_client *client = v4l2_get_subdevdata(sd); 512 struct tw9910_priv *priv = to_tw9910(client); 513 const unsigned hact = 720; 514 const unsigned hdelay = 15; 515 unsigned vact; 516 unsigned vdelay; 517 int ret; 518 519 if (!(norm & (V4L2_STD_NTSC | V4L2_STD_PAL))) 520 return -EINVAL; 521 522 priv->norm = norm; 523 if (norm & V4L2_STD_525_60) { 524 vact = 240; 525 vdelay = 18; 526 ret = tw9910_mask_set(client, VVBI, 0x10, 0x10); 527 } else { 528 vact = 288; 529 vdelay = 24; 530 ret = tw9910_mask_set(client, VVBI, 0x10, 0x00); 531 } 532 if (!ret) 533 ret = i2c_smbus_write_byte_data(client, CROP_HI, 534 ((vdelay >> 2) & 0xc0) | 535 ((vact >> 4) & 0x30) | 536 ((hdelay >> 6) & 0x0c) | 537 ((hact >> 8) & 0x03)); 538 if (!ret) 539 ret = i2c_smbus_write_byte_data(client, VDELAY_LO, 540 vdelay & 0xff); 541 if (!ret) 542 ret = i2c_smbus_write_byte_data(client, VACTIVE_LO, 543 vact & 0xff); 544 545 return ret; 546} 547 548#ifdef CONFIG_VIDEO_ADV_DEBUG 549static int tw9910_g_register(struct v4l2_subdev *sd, 550 struct v4l2_dbg_register *reg) 551{ 552 struct i2c_client *client = v4l2_get_subdevdata(sd); 553 int ret; 554 555 if (reg->reg > 0xff) 556 return -EINVAL; 557 558 reg->size = 1; 559 ret = i2c_smbus_read_byte_data(client, reg->reg); 560 if (ret < 0) 561 return ret; 562 563 /* 564 * ret = int 565 * reg->val = __u64 566 */ 567 reg->val = (__u64)ret; 568 569 return 0; 570} 571 572static int tw9910_s_register(struct v4l2_subdev *sd, 573 const struct v4l2_dbg_register *reg) 574{ 575 struct i2c_client *client = v4l2_get_subdevdata(sd); 576 577 if (reg->reg > 0xff || 578 reg->val > 0xff) 579 return -EINVAL; 580 581 return i2c_smbus_write_byte_data(client, reg->reg, reg->val); 582} 583#endif 584 585static int tw9910_s_power(struct v4l2_subdev *sd, int on) 586{ 587 struct i2c_client *client = v4l2_get_subdevdata(sd); 588 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); 589 struct tw9910_priv *priv = to_tw9910(client); 590 591 return soc_camera_set_power(&client->dev, ssdd, priv->clk, on); 592} 593 594static int tw9910_set_frame(struct v4l2_subdev *sd, u32 *width, u32 *height) 595{ 596 struct i2c_client *client = v4l2_get_subdevdata(sd); 597 struct tw9910_priv *priv = to_tw9910(client); 598 int ret = -EINVAL; 599 u8 val; 600 601 /* 602 * select suitable norm 603 */ 604 priv->scale = tw9910_select_norm(priv->norm, *width, *height); 605 if (!priv->scale) 606 goto tw9910_set_fmt_error; 607 608 /* 609 * reset hardware 610 */ 611 tw9910_reset(client); 612 613 /* 614 * set bus width 615 */ 616 val = 0x00; 617 if (SOCAM_DATAWIDTH_16 == priv->info->buswidth) 618 val = LEN; 619 620 ret = tw9910_mask_set(client, OPFORM, LEN, val); 621 if (ret < 0) 622 goto tw9910_set_fmt_error; 623 624 /* 625 * select MPOUT behavior 626 */ 627 switch (priv->info->mpout) { 628 case TW9910_MPO_VLOSS: 629 val = RTSEL_VLOSS; break; 630 case TW9910_MPO_HLOCK: 631 val = RTSEL_HLOCK; break; 632 case TW9910_MPO_SLOCK: 633 val = RTSEL_SLOCK; break; 634 case TW9910_MPO_VLOCK: 635 val = RTSEL_VLOCK; break; 636 case TW9910_MPO_MONO: 637 val = RTSEL_MONO; break; 638 case TW9910_MPO_DET50: 639 val = RTSEL_DET50; break; 640 case TW9910_MPO_FIELD: 641 val = RTSEL_FIELD; break; 642 case TW9910_MPO_RTCO: 643 val = RTSEL_RTCO; break; 644 default: 645 val = 0; 646 } 647 648 ret = tw9910_mask_set(client, VBICNTL, RTSEL_MASK, val); 649 if (ret < 0) 650 goto tw9910_set_fmt_error; 651 652 /* 653 * set scale 654 */ 655 ret = tw9910_set_scale(client, priv->scale); 656 if (ret < 0) 657 goto tw9910_set_fmt_error; 658 659 /* 660 * set hsync 661 */ 662 ret = tw9910_set_hsync(client); 663 if (ret < 0) 664 goto tw9910_set_fmt_error; 665 666 *width = priv->scale->width; 667 *height = priv->scale->height; 668 669 return ret; 670 671tw9910_set_fmt_error: 672 673 tw9910_reset(client); 674 priv->scale = NULL; 675 676 return ret; 677} 678 679static int tw9910_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) 680{ 681 struct i2c_client *client = v4l2_get_subdevdata(sd); 682 struct tw9910_priv *priv = to_tw9910(client); 683 684 a->c.left = 0; 685 a->c.top = 0; 686 if (priv->norm & V4L2_STD_NTSC) { 687 a->c.width = 640; 688 a->c.height = 480; 689 } else { 690 a->c.width = 768; 691 a->c.height = 576; 692 } 693 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 694 695 return 0; 696} 697 698static int tw9910_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) 699{ 700 struct i2c_client *client = v4l2_get_subdevdata(sd); 701 struct tw9910_priv *priv = to_tw9910(client); 702 703 a->bounds.left = 0; 704 a->bounds.top = 0; 705 if (priv->norm & V4L2_STD_NTSC) { 706 a->bounds.width = 640; 707 a->bounds.height = 480; 708 } else { 709 a->bounds.width = 768; 710 a->bounds.height = 576; 711 } 712 a->defrect = a->bounds; 713 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 714 a->pixelaspect.numerator = 1; 715 a->pixelaspect.denominator = 1; 716 717 return 0; 718} 719 720static int tw9910_get_fmt(struct v4l2_subdev *sd, 721 struct v4l2_subdev_pad_config *cfg, 722 struct v4l2_subdev_format *format) 723{ 724 struct v4l2_mbus_framefmt *mf = &format->format; 725 struct i2c_client *client = v4l2_get_subdevdata(sd); 726 struct tw9910_priv *priv = to_tw9910(client); 727 728 if (format->pad) 729 return -EINVAL; 730 731 if (!priv->scale) { 732 priv->scale = tw9910_select_norm(priv->norm, 640, 480); 733 if (!priv->scale) 734 return -EINVAL; 735 } 736 737 mf->width = priv->scale->width; 738 mf->height = priv->scale->height; 739 mf->code = MEDIA_BUS_FMT_UYVY8_2X8; 740 mf->colorspace = V4L2_COLORSPACE_SMPTE170M; 741 mf->field = V4L2_FIELD_INTERLACED_BT; 742 743 return 0; 744} 745 746static int tw9910_s_fmt(struct v4l2_subdev *sd, 747 struct v4l2_mbus_framefmt *mf) 748{ 749 u32 width = mf->width, height = mf->height; 750 int ret; 751 752 WARN_ON(mf->field != V4L2_FIELD_ANY && 753 mf->field != V4L2_FIELD_INTERLACED_BT); 754 755 /* 756 * check color format 757 */ 758 if (mf->code != MEDIA_BUS_FMT_UYVY8_2X8) 759 return -EINVAL; 760 761 mf->colorspace = V4L2_COLORSPACE_SMPTE170M; 762 763 ret = tw9910_set_frame(sd, &width, &height); 764 if (!ret) { 765 mf->width = width; 766 mf->height = height; 767 } 768 return ret; 769} 770 771static int tw9910_set_fmt(struct v4l2_subdev *sd, 772 struct v4l2_subdev_pad_config *cfg, 773 struct v4l2_subdev_format *format) 774{ 775 struct v4l2_mbus_framefmt *mf = &format->format; 776 struct i2c_client *client = v4l2_get_subdevdata(sd); 777 struct tw9910_priv *priv = to_tw9910(client); 778 const struct tw9910_scale_ctrl *scale; 779 780 if (format->pad) 781 return -EINVAL; 782 783 if (V4L2_FIELD_ANY == mf->field) { 784 mf->field = V4L2_FIELD_INTERLACED_BT; 785 } else if (V4L2_FIELD_INTERLACED_BT != mf->field) { 786 dev_err(&client->dev, "Field type %d invalid.\n", mf->field); 787 return -EINVAL; 788 } 789 790 mf->code = MEDIA_BUS_FMT_UYVY8_2X8; 791 mf->colorspace = V4L2_COLORSPACE_SMPTE170M; 792 793 /* 794 * select suitable norm 795 */ 796 scale = tw9910_select_norm(priv->norm, mf->width, mf->height); 797 if (!scale) 798 return -EINVAL; 799 800 mf->width = scale->width; 801 mf->height = scale->height; 802 803 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) 804 return tw9910_s_fmt(sd, mf); 805 cfg->try_fmt = *mf; 806 return 0; 807} 808 809static int tw9910_video_probe(struct i2c_client *client) 810{ 811 struct tw9910_priv *priv = to_tw9910(client); 812 s32 id; 813 int ret; 814 815 /* 816 * tw9910 only use 8 or 16 bit bus width 817 */ 818 if (SOCAM_DATAWIDTH_16 != priv->info->buswidth && 819 SOCAM_DATAWIDTH_8 != priv->info->buswidth) { 820 dev_err(&client->dev, "bus width error\n"); 821 return -ENODEV; 822 } 823 824 ret = tw9910_s_power(&priv->subdev, 1); 825 if (ret < 0) 826 return ret; 827 828 /* 829 * check and show Product ID 830 * So far only revisions 0 and 1 have been seen 831 */ 832 id = i2c_smbus_read_byte_data(client, ID); 833 priv->revision = GET_REV(id); 834 id = GET_ID(id); 835 836 if (0x0B != id || 837 0x01 < priv->revision) { 838 dev_err(&client->dev, 839 "Product ID error %x:%x\n", 840 id, priv->revision); 841 ret = -ENODEV; 842 goto done; 843 } 844 845 dev_info(&client->dev, 846 "tw9910 Product ID %0x:%0x\n", id, priv->revision); 847 848 priv->norm = V4L2_STD_NTSC; 849 priv->scale = &tw9910_ntsc_scales[0]; 850 851done: 852 tw9910_s_power(&priv->subdev, 0); 853 return ret; 854} 855 856static struct v4l2_subdev_core_ops tw9910_subdev_core_ops = { 857#ifdef CONFIG_VIDEO_ADV_DEBUG 858 .g_register = tw9910_g_register, 859 .s_register = tw9910_s_register, 860#endif 861 .s_power = tw9910_s_power, 862}; 863 864static int tw9910_enum_mbus_code(struct v4l2_subdev *sd, 865 struct v4l2_subdev_pad_config *cfg, 866 struct v4l2_subdev_mbus_code_enum *code) 867{ 868 if (code->pad || code->index) 869 return -EINVAL; 870 871 code->code = MEDIA_BUS_FMT_UYVY8_2X8; 872 return 0; 873} 874 875static int tw9910_g_mbus_config(struct v4l2_subdev *sd, 876 struct v4l2_mbus_config *cfg) 877{ 878 struct i2c_client *client = v4l2_get_subdevdata(sd); 879 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); 880 881 cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_MASTER | 882 V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW | 883 V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW | 884 V4L2_MBUS_DATA_ACTIVE_HIGH; 885 cfg->type = V4L2_MBUS_PARALLEL; 886 cfg->flags = soc_camera_apply_board_flags(ssdd, cfg); 887 888 return 0; 889} 890 891static int tw9910_s_mbus_config(struct v4l2_subdev *sd, 892 const struct v4l2_mbus_config *cfg) 893{ 894 struct i2c_client *client = v4l2_get_subdevdata(sd); 895 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); 896 u8 val = VSSL_VVALID | HSSL_DVALID; 897 unsigned long flags = soc_camera_apply_board_flags(ssdd, cfg); 898 899 /* 900 * set OUTCTR1 901 * 902 * We use VVALID and DVALID signals to control VSYNC and HSYNC 903 * outputs, in this mode their polarity is inverted. 904 */ 905 if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW) 906 val |= HSP_HI; 907 908 if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) 909 val |= VSP_HI; 910 911 return i2c_smbus_write_byte_data(client, OUTCTR1, val); 912} 913 914static int tw9910_g_tvnorms(struct v4l2_subdev *sd, v4l2_std_id *norm) 915{ 916 *norm = V4L2_STD_NTSC | V4L2_STD_PAL; 917 return 0; 918} 919 920static struct v4l2_subdev_video_ops tw9910_subdev_video_ops = { 921 .s_std = tw9910_s_std, 922 .g_std = tw9910_g_std, 923 .s_stream = tw9910_s_stream, 924 .cropcap = tw9910_cropcap, 925 .g_crop = tw9910_g_crop, 926 .g_mbus_config = tw9910_g_mbus_config, 927 .s_mbus_config = tw9910_s_mbus_config, 928 .g_tvnorms = tw9910_g_tvnorms, 929}; 930 931static const struct v4l2_subdev_pad_ops tw9910_subdev_pad_ops = { 932 .enum_mbus_code = tw9910_enum_mbus_code, 933 .get_fmt = tw9910_get_fmt, 934 .set_fmt = tw9910_set_fmt, 935}; 936 937static struct v4l2_subdev_ops tw9910_subdev_ops = { 938 .core = &tw9910_subdev_core_ops, 939 .video = &tw9910_subdev_video_ops, 940 .pad = &tw9910_subdev_pad_ops, 941}; 942 943/* 944 * i2c_driver function 945 */ 946 947static int tw9910_probe(struct i2c_client *client, 948 const struct i2c_device_id *did) 949 950{ 951 struct tw9910_priv *priv; 952 struct tw9910_video_info *info; 953 struct i2c_adapter *adapter = 954 to_i2c_adapter(client->dev.parent); 955 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); 956 int ret; 957 958 if (!ssdd || !ssdd->drv_priv) { 959 dev_err(&client->dev, "TW9910: missing platform data!\n"); 960 return -EINVAL; 961 } 962 963 info = ssdd->drv_priv; 964 965 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { 966 dev_err(&client->dev, 967 "I2C-Adapter doesn't support " 968 "I2C_FUNC_SMBUS_BYTE_DATA\n"); 969 return -EIO; 970 } 971 972 priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL); 973 if (!priv) 974 return -ENOMEM; 975 976 priv->info = info; 977 978 v4l2_i2c_subdev_init(&priv->subdev, client, &tw9910_subdev_ops); 979 980 priv->clk = v4l2_clk_get(&client->dev, "mclk"); 981 if (IS_ERR(priv->clk)) 982 return PTR_ERR(priv->clk); 983 984 ret = tw9910_video_probe(client); 985 if (ret < 0) 986 v4l2_clk_put(priv->clk); 987 988 return ret; 989} 990 991static int tw9910_remove(struct i2c_client *client) 992{ 993 struct tw9910_priv *priv = to_tw9910(client); 994 v4l2_clk_put(priv->clk); 995 return 0; 996} 997 998static const struct i2c_device_id tw9910_id[] = { 999 { "tw9910", 0 }, 1000 { } 1001}; 1002MODULE_DEVICE_TABLE(i2c, tw9910_id); 1003 1004static struct i2c_driver tw9910_i2c_driver = { 1005 .driver = { 1006 .name = "tw9910", 1007 }, 1008 .probe = tw9910_probe, 1009 .remove = tw9910_remove, 1010 .id_table = tw9910_id, 1011}; 1012 1013module_i2c_driver(tw9910_i2c_driver); 1014 1015MODULE_DESCRIPTION("SoC Camera driver for tw9910"); 1016MODULE_AUTHOR("Kuninori Morimoto"); 1017MODULE_LICENSE("GPL v2"); 1018