1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * adv7183.c Analog Devices ADV7183 video decoder driver 4 * 5 * Copyright (c) 2011 Analog Devices Inc. 6 */ 7 8 #include <linux/delay.h> 9 #include <linux/errno.h> 10 #include <linux/gpio/consumer.h> 11 #include <linux/i2c.h> 12 #include <linux/init.h> 13 #include <linux/module.h> 14 #include <linux/slab.h> 15 #include <linux/types.h> 16 #include <linux/videodev2.h> 17 18 #include <media/i2c/adv7183.h> 19 #include <media/v4l2-ctrls.h> 20 #include <media/v4l2-device.h> 21 22 #include "adv7183_regs.h" 23 24 struct adv7183 { 25 struct v4l2_subdev sd; 26 struct v4l2_ctrl_handler hdl; 27 28 v4l2_std_id std; /* Current set standard */ 29 u32 input; 30 u32 output; 31 struct gpio_desc *reset_pin; 32 struct gpio_desc *oe_pin; 33 struct v4l2_mbus_framefmt fmt; 34 }; 35 36 /* EXAMPLES USING 27 MHz CLOCK 37 * Mode 1 CVBS Input (Composite Video on AIN5) 38 * All standards are supported through autodetect, 8-bit, 4:2:2, ITU-R BT.656 output on P15 to P8. 39 */ 40 static const unsigned char adv7183_init_regs[] = { 41 ADV7183_IN_CTRL, 0x04, /* CVBS input on AIN5 */ 42 ADV7183_DIGI_CLAMP_CTRL_1, 0x00, /* Slow down digital clamps */ 43 ADV7183_SHAP_FILT_CTRL, 0x41, /* Set CSFM to SH1 */ 44 ADV7183_ADC_CTRL, 0x16, /* Power down ADC 1 and ADC 2 */ 45 ADV7183_CTI_DNR_CTRL_4, 0x04, /* Set DNR threshold to 4 for flat response */ 46 /* ADI recommended programming sequence */ 47 ADV7183_ADI_CTRL, 0x80, 48 ADV7183_CTI_DNR_CTRL_4, 0x20, 49 0x52, 0x18, 50 0x58, 0xED, 51 0x77, 0xC5, 52 0x7C, 0x93, 53 0x7D, 0x00, 54 0xD0, 0x48, 55 0xD5, 0xA0, 56 0xD7, 0xEA, 57 ADV7183_SD_SATURATION_CR, 0x3E, 58 ADV7183_PAL_V_END, 0x3E, 59 ADV7183_PAL_F_TOGGLE, 0x0F, 60 ADV7183_ADI_CTRL, 0x00, 61 }; 62 63 static inline struct adv7183 *to_adv7183(struct v4l2_subdev *sd) 64 { 65 return container_of(sd, struct adv7183, sd); 66 } 67 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) 68 { 69 return &container_of(ctrl->handler, struct adv7183, hdl)->sd; 70 } 71 72 static inline int adv7183_read(struct v4l2_subdev *sd, unsigned char reg) 73 { 74 struct i2c_client *client = v4l2_get_subdevdata(sd); 75 76 return i2c_smbus_read_byte_data(client, reg); 77 } 78 79 static inline int adv7183_write(struct v4l2_subdev *sd, unsigned char reg, 80 unsigned char value) 81 { 82 struct i2c_client *client = v4l2_get_subdevdata(sd); 83 84 return i2c_smbus_write_byte_data(client, reg, value); 85 } 86 87 static int adv7183_writeregs(struct v4l2_subdev *sd, 88 const unsigned char *regs, unsigned int num) 89 { 90 unsigned char reg, data; 91 unsigned int cnt = 0; 92 93 if (num & 0x1) { 94 v4l2_err(sd, "invalid regs array\n"); 95 return -1; 96 } 97 98 while (cnt < num) { 99 reg = *regs++; 100 data = *regs++; 101 cnt += 2; 102 103 adv7183_write(sd, reg, data); 104 } 105 return 0; 106 } 107 108 static int adv7183_log_status(struct v4l2_subdev *sd) 109 { 110 struct adv7183 *decoder = to_adv7183(sd); 111 112 v4l2_info(sd, "adv7183: Input control = 0x%02x\n", 113 adv7183_read(sd, ADV7183_IN_CTRL)); 114 v4l2_info(sd, "adv7183: Video selection = 0x%02x\n", 115 adv7183_read(sd, ADV7183_VD_SEL)); 116 v4l2_info(sd, "adv7183: Output control = 0x%02x\n", 117 adv7183_read(sd, ADV7183_OUT_CTRL)); 118 v4l2_info(sd, "adv7183: Extended output control = 0x%02x\n", 119 adv7183_read(sd, ADV7183_EXT_OUT_CTRL)); 120 v4l2_info(sd, "adv7183: Autodetect enable = 0x%02x\n", 121 adv7183_read(sd, ADV7183_AUTO_DET_EN)); 122 v4l2_info(sd, "adv7183: Contrast = 0x%02x\n", 123 adv7183_read(sd, ADV7183_CONTRAST)); 124 v4l2_info(sd, "adv7183: Brightness = 0x%02x\n", 125 adv7183_read(sd, ADV7183_BRIGHTNESS)); 126 v4l2_info(sd, "adv7183: Hue = 0x%02x\n", 127 adv7183_read(sd, ADV7183_HUE)); 128 v4l2_info(sd, "adv7183: Default value Y = 0x%02x\n", 129 adv7183_read(sd, ADV7183_DEF_Y)); 130 v4l2_info(sd, "adv7183: Default value C = 0x%02x\n", 131 adv7183_read(sd, ADV7183_DEF_C)); 132 v4l2_info(sd, "adv7183: ADI control = 0x%02x\n", 133 adv7183_read(sd, ADV7183_ADI_CTRL)); 134 v4l2_info(sd, "adv7183: Power Management = 0x%02x\n", 135 adv7183_read(sd, ADV7183_POW_MANAGE)); 136 v4l2_info(sd, "adv7183: Status 1 2 and 3 = 0x%02x 0x%02x 0x%02x\n", 137 adv7183_read(sd, ADV7183_STATUS_1), 138 adv7183_read(sd, ADV7183_STATUS_2), 139 adv7183_read(sd, ADV7183_STATUS_3)); 140 v4l2_info(sd, "adv7183: Ident = 0x%02x\n", 141 adv7183_read(sd, ADV7183_IDENT)); 142 v4l2_info(sd, "adv7183: Analog clamp control = 0x%02x\n", 143 adv7183_read(sd, ADV7183_ANAL_CLAMP_CTRL)); 144 v4l2_info(sd, "adv7183: Digital clamp control 1 = 0x%02x\n", 145 adv7183_read(sd, ADV7183_DIGI_CLAMP_CTRL_1)); 146 v4l2_info(sd, "adv7183: Shaping filter control 1 and 2 = 0x%02x 0x%02x\n", 147 adv7183_read(sd, ADV7183_SHAP_FILT_CTRL), 148 adv7183_read(sd, ADV7183_SHAP_FILT_CTRL_2)); 149 v4l2_info(sd, "adv7183: Comb filter control = 0x%02x\n", 150 adv7183_read(sd, ADV7183_COMB_FILT_CTRL)); 151 v4l2_info(sd, "adv7183: ADI control 2 = 0x%02x\n", 152 adv7183_read(sd, ADV7183_ADI_CTRL_2)); 153 v4l2_info(sd, "adv7183: Pixel delay control = 0x%02x\n", 154 adv7183_read(sd, ADV7183_PIX_DELAY_CTRL)); 155 v4l2_info(sd, "adv7183: Misc gain control = 0x%02x\n", 156 adv7183_read(sd, ADV7183_MISC_GAIN_CTRL)); 157 v4l2_info(sd, "adv7183: AGC mode control = 0x%02x\n", 158 adv7183_read(sd, ADV7183_AGC_MODE_CTRL)); 159 v4l2_info(sd, "adv7183: Chroma gain control 1 and 2 = 0x%02x 0x%02x\n", 160 adv7183_read(sd, ADV7183_CHRO_GAIN_CTRL_1), 161 adv7183_read(sd, ADV7183_CHRO_GAIN_CTRL_2)); 162 v4l2_info(sd, "adv7183: Luma gain control 1 and 2 = 0x%02x 0x%02x\n", 163 adv7183_read(sd, ADV7183_LUMA_GAIN_CTRL_1), 164 adv7183_read(sd, ADV7183_LUMA_GAIN_CTRL_2)); 165 v4l2_info(sd, "adv7183: Vsync field control 1 2 and 3 = 0x%02x 0x%02x 0x%02x\n", 166 adv7183_read(sd, ADV7183_VS_FIELD_CTRL_1), 167 adv7183_read(sd, ADV7183_VS_FIELD_CTRL_2), 168 adv7183_read(sd, ADV7183_VS_FIELD_CTRL_3)); 169 v4l2_info(sd, "adv7183: Hsync position control 1 2 and 3 = 0x%02x 0x%02x 0x%02x\n", 170 adv7183_read(sd, ADV7183_HS_POS_CTRL_1), 171 adv7183_read(sd, ADV7183_HS_POS_CTRL_2), 172 adv7183_read(sd, ADV7183_HS_POS_CTRL_3)); 173 v4l2_info(sd, "adv7183: Polarity = 0x%02x\n", 174 adv7183_read(sd, ADV7183_POLARITY)); 175 v4l2_info(sd, "adv7183: ADC control = 0x%02x\n", 176 adv7183_read(sd, ADV7183_ADC_CTRL)); 177 v4l2_info(sd, "adv7183: SD offset Cb and Cr = 0x%02x 0x%02x\n", 178 adv7183_read(sd, ADV7183_SD_OFFSET_CB), 179 adv7183_read(sd, ADV7183_SD_OFFSET_CR)); 180 v4l2_info(sd, "adv7183: SD saturation Cb and Cr = 0x%02x 0x%02x\n", 181 adv7183_read(sd, ADV7183_SD_SATURATION_CB), 182 adv7183_read(sd, ADV7183_SD_SATURATION_CR)); 183 v4l2_info(sd, "adv7183: Drive strength = 0x%02x\n", 184 adv7183_read(sd, ADV7183_DRIVE_STR)); 185 v4l2_ctrl_handler_log_status(&decoder->hdl, sd->name); 186 return 0; 187 } 188 189 static int adv7183_g_std(struct v4l2_subdev *sd, v4l2_std_id *std) 190 { 191 struct adv7183 *decoder = to_adv7183(sd); 192 193 *std = decoder->std; 194 return 0; 195 } 196 197 static int adv7183_s_std(struct v4l2_subdev *sd, v4l2_std_id std) 198 { 199 struct adv7183 *decoder = to_adv7183(sd); 200 int reg; 201 202 reg = adv7183_read(sd, ADV7183_IN_CTRL) & 0xF; 203 if (std == V4L2_STD_PAL_60) 204 reg |= 0x60; 205 else if (std == V4L2_STD_NTSC_443) 206 reg |= 0x70; 207 else if (std == V4L2_STD_PAL_N) 208 reg |= 0x90; 209 else if (std == V4L2_STD_PAL_M) 210 reg |= 0xA0; 211 else if (std == V4L2_STD_PAL_Nc) 212 reg |= 0xC0; 213 else if (std & V4L2_STD_PAL) 214 reg |= 0x80; 215 else if (std & V4L2_STD_NTSC) 216 reg |= 0x50; 217 else if (std & V4L2_STD_SECAM) 218 reg |= 0xE0; 219 else 220 return -EINVAL; 221 adv7183_write(sd, ADV7183_IN_CTRL, reg); 222 223 decoder->std = std; 224 225 return 0; 226 } 227 228 static int adv7183_reset(struct v4l2_subdev *sd, u32 val) 229 { 230 int reg; 231 232 reg = adv7183_read(sd, ADV7183_POW_MANAGE) | 0x80; 233 adv7183_write(sd, ADV7183_POW_MANAGE, reg); 234 /* wait 5ms before any further i2c writes are performed */ 235 usleep_range(5000, 10000); 236 return 0; 237 } 238 239 static int adv7183_s_routing(struct v4l2_subdev *sd, 240 u32 input, u32 output, u32 config) 241 { 242 struct adv7183 *decoder = to_adv7183(sd); 243 int reg; 244 245 if ((input > ADV7183_COMPONENT1) || (output > ADV7183_16BIT_OUT)) 246 return -EINVAL; 247 248 if (input != decoder->input) { 249 decoder->input = input; 250 reg = adv7183_read(sd, ADV7183_IN_CTRL) & 0xF0; 251 switch (input) { 252 case ADV7183_COMPOSITE1: 253 reg |= 0x1; 254 break; 255 case ADV7183_COMPOSITE2: 256 reg |= 0x2; 257 break; 258 case ADV7183_COMPOSITE3: 259 reg |= 0x3; 260 break; 261 case ADV7183_COMPOSITE4: 262 reg |= 0x4; 263 break; 264 case ADV7183_COMPOSITE5: 265 reg |= 0x5; 266 break; 267 case ADV7183_COMPOSITE6: 268 reg |= 0xB; 269 break; 270 case ADV7183_COMPOSITE7: 271 reg |= 0xC; 272 break; 273 case ADV7183_COMPOSITE8: 274 reg |= 0xD; 275 break; 276 case ADV7183_COMPOSITE9: 277 reg |= 0xE; 278 break; 279 case ADV7183_COMPOSITE10: 280 reg |= 0xF; 281 break; 282 case ADV7183_SVIDEO0: 283 reg |= 0x6; 284 break; 285 case ADV7183_SVIDEO1: 286 reg |= 0x7; 287 break; 288 case ADV7183_SVIDEO2: 289 reg |= 0x8; 290 break; 291 case ADV7183_COMPONENT0: 292 reg |= 0x9; 293 break; 294 case ADV7183_COMPONENT1: 295 reg |= 0xA; 296 break; 297 default: 298 break; 299 } 300 adv7183_write(sd, ADV7183_IN_CTRL, reg); 301 } 302 303 if (output != decoder->output) { 304 decoder->output = output; 305 reg = adv7183_read(sd, ADV7183_OUT_CTRL) & 0xC0; 306 switch (output) { 307 case ADV7183_16BIT_OUT: 308 reg |= 0x9; 309 break; 310 default: 311 reg |= 0xC; 312 break; 313 } 314 adv7183_write(sd, ADV7183_OUT_CTRL, reg); 315 } 316 317 return 0; 318 } 319 320 static int adv7183_s_ctrl(struct v4l2_ctrl *ctrl) 321 { 322 struct v4l2_subdev *sd = to_sd(ctrl); 323 int val = ctrl->val; 324 325 switch (ctrl->id) { 326 case V4L2_CID_BRIGHTNESS: 327 if (val < 0) 328 val = 127 - val; 329 adv7183_write(sd, ADV7183_BRIGHTNESS, val); 330 break; 331 case V4L2_CID_CONTRAST: 332 adv7183_write(sd, ADV7183_CONTRAST, val); 333 break; 334 case V4L2_CID_SATURATION: 335 adv7183_write(sd, ADV7183_SD_SATURATION_CB, val >> 8); 336 adv7183_write(sd, ADV7183_SD_SATURATION_CR, (val & 0xFF)); 337 break; 338 case V4L2_CID_HUE: 339 adv7183_write(sd, ADV7183_SD_OFFSET_CB, val >> 8); 340 adv7183_write(sd, ADV7183_SD_OFFSET_CR, (val & 0xFF)); 341 break; 342 default: 343 return -EINVAL; 344 } 345 346 return 0; 347 } 348 349 static int adv7183_querystd(struct v4l2_subdev *sd, v4l2_std_id *std) 350 { 351 struct adv7183 *decoder = to_adv7183(sd); 352 int reg; 353 354 /* enable autodetection block */ 355 reg = adv7183_read(sd, ADV7183_IN_CTRL) & 0xF; 356 adv7183_write(sd, ADV7183_IN_CTRL, reg); 357 358 /* wait autodetection switch */ 359 mdelay(10); 360 361 /* get autodetection result */ 362 reg = adv7183_read(sd, ADV7183_STATUS_1); 363 switch ((reg >> 0x4) & 0x7) { 364 case 0: 365 *std &= V4L2_STD_NTSC; 366 break; 367 case 1: 368 *std &= V4L2_STD_NTSC_443; 369 break; 370 case 2: 371 *std &= V4L2_STD_PAL_M; 372 break; 373 case 3: 374 *std &= V4L2_STD_PAL_60; 375 break; 376 case 4: 377 *std &= V4L2_STD_PAL; 378 break; 379 case 5: 380 *std &= V4L2_STD_SECAM; 381 break; 382 case 6: 383 *std &= V4L2_STD_PAL_Nc; 384 break; 385 case 7: 386 *std &= V4L2_STD_SECAM; 387 break; 388 default: 389 *std = V4L2_STD_UNKNOWN; 390 break; 391 } 392 393 /* after std detection, write back user set std */ 394 adv7183_s_std(sd, decoder->std); 395 return 0; 396 } 397 398 static int adv7183_g_input_status(struct v4l2_subdev *sd, u32 *status) 399 { 400 int reg; 401 402 *status = V4L2_IN_ST_NO_SIGNAL; 403 reg = adv7183_read(sd, ADV7183_STATUS_1); 404 if (reg < 0) 405 return reg; 406 if (reg & 0x1) 407 *status = 0; 408 return 0; 409 } 410 411 static int adv7183_enum_mbus_code(struct v4l2_subdev *sd, 412 struct v4l2_subdev_state *sd_state, 413 struct v4l2_subdev_mbus_code_enum *code) 414 { 415 if (code->pad || code->index > 0) 416 return -EINVAL; 417 418 code->code = MEDIA_BUS_FMT_UYVY8_2X8; 419 return 0; 420 } 421 422 static int adv7183_set_fmt(struct v4l2_subdev *sd, 423 struct v4l2_subdev_state *sd_state, 424 struct v4l2_subdev_format *format) 425 { 426 struct adv7183 *decoder = to_adv7183(sd); 427 struct v4l2_mbus_framefmt *fmt = &format->format; 428 429 if (format->pad) 430 return -EINVAL; 431 432 fmt->code = MEDIA_BUS_FMT_UYVY8_2X8; 433 fmt->colorspace = V4L2_COLORSPACE_SMPTE170M; 434 if (decoder->std & V4L2_STD_525_60) { 435 fmt->field = V4L2_FIELD_SEQ_TB; 436 fmt->width = 720; 437 fmt->height = 480; 438 } else { 439 fmt->field = V4L2_FIELD_SEQ_BT; 440 fmt->width = 720; 441 fmt->height = 576; 442 } 443 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) 444 decoder->fmt = *fmt; 445 else 446 sd_state->pads->try_fmt = *fmt; 447 return 0; 448 } 449 450 static int adv7183_get_fmt(struct v4l2_subdev *sd, 451 struct v4l2_subdev_state *sd_state, 452 struct v4l2_subdev_format *format) 453 { 454 struct adv7183 *decoder = to_adv7183(sd); 455 456 if (format->pad) 457 return -EINVAL; 458 459 format->format = decoder->fmt; 460 return 0; 461 } 462 463 static int adv7183_s_stream(struct v4l2_subdev *sd, int enable) 464 { 465 struct adv7183 *decoder = to_adv7183(sd); 466 467 if (enable) 468 gpiod_set_value(decoder->oe_pin, 1); 469 else 470 gpiod_set_value(decoder->oe_pin, 0); 471 udelay(1); 472 return 0; 473 } 474 475 #ifdef CONFIG_VIDEO_ADV_DEBUG 476 static int adv7183_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) 477 { 478 reg->val = adv7183_read(sd, reg->reg & 0xff); 479 reg->size = 1; 480 return 0; 481 } 482 483 static int adv7183_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg) 484 { 485 adv7183_write(sd, reg->reg & 0xff, reg->val & 0xff); 486 return 0; 487 } 488 #endif 489 490 static const struct v4l2_ctrl_ops adv7183_ctrl_ops = { 491 .s_ctrl = adv7183_s_ctrl, 492 }; 493 494 static const struct v4l2_subdev_core_ops adv7183_core_ops = { 495 .log_status = adv7183_log_status, 496 .reset = adv7183_reset, 497 #ifdef CONFIG_VIDEO_ADV_DEBUG 498 .g_register = adv7183_g_register, 499 .s_register = adv7183_s_register, 500 #endif 501 }; 502 503 static const struct v4l2_subdev_video_ops adv7183_video_ops = { 504 .g_std = adv7183_g_std, 505 .s_std = adv7183_s_std, 506 .s_routing = adv7183_s_routing, 507 .querystd = adv7183_querystd, 508 .g_input_status = adv7183_g_input_status, 509 .s_stream = adv7183_s_stream, 510 }; 511 512 static const struct v4l2_subdev_pad_ops adv7183_pad_ops = { 513 .enum_mbus_code = adv7183_enum_mbus_code, 514 .get_fmt = adv7183_get_fmt, 515 .set_fmt = adv7183_set_fmt, 516 }; 517 518 static const struct v4l2_subdev_ops adv7183_ops = { 519 .core = &adv7183_core_ops, 520 .video = &adv7183_video_ops, 521 .pad = &adv7183_pad_ops, 522 }; 523 524 static int adv7183_probe(struct i2c_client *client) 525 { 526 struct adv7183 *decoder; 527 struct v4l2_subdev *sd; 528 struct v4l2_ctrl_handler *hdl; 529 int ret; 530 struct v4l2_subdev_format fmt = { 531 .which = V4L2_SUBDEV_FORMAT_ACTIVE, 532 }; 533 534 /* Check if the adapter supports the needed features */ 535 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 536 return -EIO; 537 538 v4l_info(client, "chip found @ 0x%02x (%s)\n", 539 client->addr << 1, client->adapter->name); 540 541 decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL); 542 if (decoder == NULL) 543 return -ENOMEM; 544 545 /* 546 * Requesting high will assert reset, the line should be 547 * flagged as active low in descriptor table or machine description. 548 */ 549 decoder->reset_pin = devm_gpiod_get(&client->dev, "reset", 550 GPIOD_OUT_HIGH); 551 if (IS_ERR(decoder->reset_pin)) 552 return PTR_ERR(decoder->reset_pin); 553 gpiod_set_consumer_name(decoder->reset_pin, "ADV7183 Reset"); 554 /* 555 * Requesting low will start with output disabled, the line should be 556 * flagged as active low in descriptor table or machine description. 557 */ 558 decoder->oe_pin = devm_gpiod_get(&client->dev, "oe", 559 GPIOD_OUT_LOW); 560 if (IS_ERR(decoder->oe_pin)) 561 return PTR_ERR(decoder->oe_pin); 562 gpiod_set_consumer_name(decoder->reset_pin, "ADV7183 Output Enable"); 563 564 sd = &decoder->sd; 565 v4l2_i2c_subdev_init(sd, client, &adv7183_ops); 566 567 hdl = &decoder->hdl; 568 v4l2_ctrl_handler_init(hdl, 4); 569 v4l2_ctrl_new_std(hdl, &adv7183_ctrl_ops, 570 V4L2_CID_BRIGHTNESS, -128, 127, 1, 0); 571 v4l2_ctrl_new_std(hdl, &adv7183_ctrl_ops, 572 V4L2_CID_CONTRAST, 0, 0xFF, 1, 0x80); 573 v4l2_ctrl_new_std(hdl, &adv7183_ctrl_ops, 574 V4L2_CID_SATURATION, 0, 0xFFFF, 1, 0x8080); 575 v4l2_ctrl_new_std(hdl, &adv7183_ctrl_ops, 576 V4L2_CID_HUE, 0, 0xFFFF, 1, 0x8080); 577 /* hook the control handler into the driver */ 578 sd->ctrl_handler = hdl; 579 if (hdl->error) { 580 ret = hdl->error; 581 582 v4l2_ctrl_handler_free(hdl); 583 return ret; 584 } 585 586 /* v4l2 doesn't support an autodetect standard, pick PAL as default */ 587 decoder->std = V4L2_STD_PAL; 588 decoder->input = ADV7183_COMPOSITE4; 589 decoder->output = ADV7183_8BIT_OUT; 590 591 /* reset chip */ 592 /* reset pulse width at least 5ms */ 593 mdelay(10); 594 /* De-assert reset line (descriptor tagged active low) */ 595 gpiod_set_value(decoder->reset_pin, 0); 596 /* wait 5ms before any further i2c writes are performed */ 597 mdelay(5); 598 599 adv7183_writeregs(sd, adv7183_init_regs, ARRAY_SIZE(adv7183_init_regs)); 600 adv7183_s_std(sd, decoder->std); 601 fmt.format.width = 720; 602 fmt.format.height = 576; 603 adv7183_set_fmt(sd, NULL, &fmt); 604 605 /* initialize the hardware to the default control values */ 606 ret = v4l2_ctrl_handler_setup(hdl); 607 if (ret) { 608 v4l2_ctrl_handler_free(hdl); 609 return ret; 610 } 611 612 return 0; 613 } 614 615 static void adv7183_remove(struct i2c_client *client) 616 { 617 struct v4l2_subdev *sd = i2c_get_clientdata(client); 618 619 v4l2_device_unregister_subdev(sd); 620 v4l2_ctrl_handler_free(sd->ctrl_handler); 621 } 622 623 static const struct i2c_device_id adv7183_id[] = { 624 {"adv7183", 0}, 625 {}, 626 }; 627 628 MODULE_DEVICE_TABLE(i2c, adv7183_id); 629 630 static struct i2c_driver adv7183_driver = { 631 .driver = { 632 .name = "adv7183", 633 }, 634 .probe = adv7183_probe, 635 .remove = adv7183_remove, 636 .id_table = adv7183_id, 637 }; 638 639 module_i2c_driver(adv7183_driver); 640 641 MODULE_DESCRIPTION("Analog Devices ADV7183 video decoder driver"); 642 MODULE_AUTHOR("Scott Jiang <Scott.Jiang.Linux@gmail.com>"); 643 MODULE_LICENSE("GPL v2"); 644