1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright (c) 2022 Intel Corporation. 3 4 #include <linux/acpi.h> 5 #include <linux/clk.h> 6 #include <linux/delay.h> 7 #include <linux/i2c.h> 8 #include <linux/module.h> 9 #include <linux/pm_runtime.h> 10 #include <linux/regulator/consumer.h> 11 #include <media/v4l2-ctrls.h> 12 #include <media/v4l2-device.h> 13 #include <media/v4l2-fwnode.h> 14 15 #define OV08D10_SCLK 144000000ULL 16 #define OV08D10_XVCLK_19_2 19200000 17 #define OV08D10_ROWCLK 36000 18 #define OV08D10_DATA_LANES 2 19 #define OV08D10_RGB_DEPTH 10 20 21 #define OV08D10_REG_PAGE 0xfd 22 #define OV08D10_REG_GLOBAL_EFFECTIVE 0x01 23 #define OV08D10_REG_CHIP_ID_0 0x00 24 #define OV08D10_REG_CHIP_ID_1 0x01 25 #define OV08D10_ID_MASK GENMASK(15, 0) 26 #define OV08D10_CHIP_ID 0x5608 27 28 #define OV08D10_REG_MODE_SELECT 0xa0 29 #define OV08D10_MODE_STANDBY 0x00 30 #define OV08D10_MODE_STREAMING 0x01 31 32 /* vertical-timings from sensor */ 33 #define OV08D10_REG_VTS_H 0x05 34 #define OV08D10_REG_VTS_L 0x06 35 #define OV08D10_VTS_MAX 0x7fff 36 37 /* Exposure controls from sensor */ 38 #define OV08D10_REG_EXPOSURE_H 0x02 39 #define OV08D10_REG_EXPOSURE_M 0x03 40 #define OV08D10_REG_EXPOSURE_L 0x04 41 #define OV08D10_EXPOSURE_MIN 6 42 #define OV08D10_EXPOSURE_MAX_MARGIN 6 43 #define OV08D10_EXPOSURE_STEP 1 44 45 /* Analog gain controls from sensor */ 46 #define OV08D10_REG_ANALOG_GAIN 0x24 47 #define OV08D10_ANAL_GAIN_MIN 128 48 #define OV08D10_ANAL_GAIN_MAX 2047 49 #define OV08D10_ANAL_GAIN_STEP 1 50 51 /* Digital gain controls from sensor */ 52 #define OV08D10_REG_MWB_DGAIN_C 0x21 53 #define OV08D10_REG_MWB_DGAIN_F 0x22 54 #define OV08D10_DGTL_GAIN_MIN 0 55 #define OV08D10_DGTL_GAIN_MAX 4095 56 #define OV08D10_DGTL_GAIN_STEP 1 57 #define OV08D10_DGTL_GAIN_DEFAULT 1024 58 59 /* Test Pattern Control */ 60 #define OV08D10_REG_TEST_PATTERN 0x12 61 #define OV08D10_TEST_PATTERN_ENABLE 0x01 62 #define OV08D10_TEST_PATTERN_DISABLE 0x00 63 64 /* Flip Mirror Controls from sensor */ 65 #define OV08D10_REG_FLIP_OPT 0x32 66 #define OV08D10_REG_FLIP_MASK 0x3 67 68 #define to_ov08d10(_sd) container_of(_sd, struct ov08d10, sd) 69 70 struct ov08d10_reg { 71 u8 address; 72 u8 val; 73 }; 74 75 struct ov08d10_reg_list { 76 u32 num_of_regs; 77 const struct ov08d10_reg *regs; 78 }; 79 80 struct ov08d10_link_freq_config { 81 const struct ov08d10_reg_list reg_list; 82 }; 83 84 struct ov08d10_mode { 85 /* Frame width in pixels */ 86 u32 width; 87 88 /* Frame height in pixels */ 89 u32 height; 90 91 /* Horizontal timining size */ 92 u32 hts; 93 94 /* Default vertical timining size */ 95 u32 vts_def; 96 97 /* Min vertical timining size */ 98 u32 vts_min; 99 100 /* Link frequency needed for this resolution */ 101 u32 link_freq_index; 102 103 /* Sensor register settings for this resolution */ 104 const struct ov08d10_reg_list reg_list; 105 106 /* Number of data lanes */ 107 u8 data_lanes; 108 }; 109 110 /* 3280x2460, 3264x2448 need 720Mbps/lane, 2 lanes */ 111 static const struct ov08d10_reg mipi_data_rate_720mbps[] = { 112 {0xfd, 0x00}, 113 {0x11, 0x2a}, 114 {0x14, 0x43}, 115 {0x1a, 0x04}, 116 {0x1b, 0xe1}, 117 {0x1e, 0x13}, 118 {0xb7, 0x02} 119 }; 120 121 /* 1632x1224 needs 360Mbps/lane, 2 lanes */ 122 static const struct ov08d10_reg mipi_data_rate_360mbps[] = { 123 {0xfd, 0x00}, 124 {0x1a, 0x04}, 125 {0x1b, 0xe1}, 126 {0x1d, 0x00}, 127 {0x1c, 0x19}, 128 {0x11, 0x2a}, 129 {0x14, 0x54}, 130 {0x1e, 0x13}, 131 {0xb7, 0x02} 132 }; 133 134 static const struct ov08d10_reg lane_2_mode_3280x2460[] = { 135 /* 3280x2460 resolution */ 136 {0xfd, 0x01}, 137 {0x12, 0x00}, 138 {0x03, 0x12}, 139 {0x04, 0x58}, 140 {0x07, 0x05}, 141 {0x21, 0x02}, 142 {0x24, 0x30}, 143 {0x33, 0x03}, 144 {0x01, 0x03}, 145 {0x19, 0x10}, 146 {0x42, 0x55}, 147 {0x43, 0x00}, 148 {0x47, 0x07}, 149 {0x48, 0x08}, 150 {0xb2, 0x7f}, 151 {0xb3, 0x7b}, 152 {0xbd, 0x08}, 153 {0xd2, 0x57}, 154 {0xd3, 0x10}, 155 {0xd4, 0x08}, 156 {0xd5, 0x08}, 157 {0xd6, 0x06}, 158 {0xb1, 0x00}, 159 {0xb4, 0x00}, 160 {0xb7, 0x0a}, 161 {0xbc, 0x44}, 162 {0xbf, 0x48}, 163 {0xc1, 0x10}, 164 {0xc3, 0x24}, 165 {0xc8, 0x03}, 166 {0xc9, 0xf8}, 167 {0xe1, 0x33}, 168 {0xe2, 0xbb}, 169 {0x51, 0x0c}, 170 {0x52, 0x0a}, 171 {0x57, 0x8c}, 172 {0x59, 0x09}, 173 {0x5a, 0x08}, 174 {0x5e, 0x10}, 175 {0x60, 0x02}, 176 {0x6d, 0x5c}, 177 {0x76, 0x16}, 178 {0x7c, 0x11}, 179 {0x90, 0x28}, 180 {0x91, 0x16}, 181 {0x92, 0x1c}, 182 {0x93, 0x24}, 183 {0x95, 0x48}, 184 {0x9c, 0x06}, 185 {0xca, 0x0c}, 186 {0xce, 0x0d}, 187 {0xfd, 0x01}, 188 {0xc0, 0x00}, 189 {0xdd, 0x18}, 190 {0xde, 0x19}, 191 {0xdf, 0x32}, 192 {0xe0, 0x70}, 193 {0xfd, 0x01}, 194 {0xc2, 0x05}, 195 {0xd7, 0x88}, 196 {0xd8, 0x77}, 197 {0xd9, 0x00}, 198 {0xfd, 0x07}, 199 {0x00, 0xf8}, 200 {0x01, 0x2b}, 201 {0x05, 0x40}, 202 {0x08, 0x06}, 203 {0x09, 0x11}, 204 {0x28, 0x6f}, 205 {0x2a, 0x20}, 206 {0x2b, 0x05}, 207 {0x5e, 0x10}, 208 {0x52, 0x00}, 209 {0x53, 0x7c}, 210 {0x54, 0x00}, 211 {0x55, 0x7c}, 212 {0x56, 0x00}, 213 {0x57, 0x7c}, 214 {0x58, 0x00}, 215 {0x59, 0x7c}, 216 {0xfd, 0x02}, 217 {0x9a, 0x30}, 218 {0xa8, 0x02}, 219 {0xfd, 0x02}, 220 {0xa1, 0x01}, 221 {0xa2, 0x09}, 222 {0xa3, 0x9c}, 223 {0xa5, 0x00}, 224 {0xa6, 0x0c}, 225 {0xa7, 0xd0}, 226 {0xfd, 0x00}, 227 {0x24, 0x01}, 228 {0xc0, 0x16}, 229 {0xc1, 0x08}, 230 {0xc2, 0x30}, 231 {0x8e, 0x0c}, 232 {0x8f, 0xd0}, 233 {0x90, 0x09}, 234 {0x91, 0x9c}, 235 {0xfd, 0x05}, 236 {0x04, 0x40}, 237 {0x07, 0x00}, 238 {0x0d, 0x01}, 239 {0x0f, 0x01}, 240 {0x10, 0x00}, 241 {0x11, 0x00}, 242 {0x12, 0x0c}, 243 {0x13, 0xcf}, 244 {0x14, 0x00}, 245 {0x15, 0x00}, 246 {0xfd, 0x00}, 247 {0x20, 0x0f}, 248 {0xe7, 0x03}, 249 {0xe7, 0x00} 250 }; 251 252 static const struct ov08d10_reg lane_2_mode_3264x2448[] = { 253 /* 3264x2448 resolution */ 254 {0xfd, 0x01}, 255 {0x12, 0x00}, 256 {0x03, 0x12}, 257 {0x04, 0x58}, 258 {0x07, 0x05}, 259 {0x21, 0x02}, 260 {0x24, 0x30}, 261 {0x33, 0x03}, 262 {0x01, 0x03}, 263 {0x19, 0x10}, 264 {0x42, 0x55}, 265 {0x43, 0x00}, 266 {0x47, 0x07}, 267 {0x48, 0x08}, 268 {0xb2, 0x7f}, 269 {0xb3, 0x7b}, 270 {0xbd, 0x08}, 271 {0xd2, 0x57}, 272 {0xd3, 0x10}, 273 {0xd4, 0x08}, 274 {0xd5, 0x08}, 275 {0xd6, 0x06}, 276 {0xb1, 0x00}, 277 {0xb4, 0x00}, 278 {0xb7, 0x0a}, 279 {0xbc, 0x44}, 280 {0xbf, 0x48}, 281 {0xc1, 0x10}, 282 {0xc3, 0x24}, 283 {0xc8, 0x03}, 284 {0xc9, 0xf8}, 285 {0xe1, 0x33}, 286 {0xe2, 0xbb}, 287 {0x51, 0x0c}, 288 {0x52, 0x0a}, 289 {0x57, 0x8c}, 290 {0x59, 0x09}, 291 {0x5a, 0x08}, 292 {0x5e, 0x10}, 293 {0x60, 0x02}, 294 {0x6d, 0x5c}, 295 {0x76, 0x16}, 296 {0x7c, 0x11}, 297 {0x90, 0x28}, 298 {0x91, 0x16}, 299 {0x92, 0x1c}, 300 {0x93, 0x24}, 301 {0x95, 0x48}, 302 {0x9c, 0x06}, 303 {0xca, 0x0c}, 304 {0xce, 0x0d}, 305 {0xfd, 0x01}, 306 {0xc0, 0x00}, 307 {0xdd, 0x18}, 308 {0xde, 0x19}, 309 {0xdf, 0x32}, 310 {0xe0, 0x70}, 311 {0xfd, 0x01}, 312 {0xc2, 0x05}, 313 {0xd7, 0x88}, 314 {0xd8, 0x77}, 315 {0xd9, 0x00}, 316 {0xfd, 0x07}, 317 {0x00, 0xf8}, 318 {0x01, 0x2b}, 319 {0x05, 0x40}, 320 {0x08, 0x06}, 321 {0x09, 0x11}, 322 {0x28, 0x6f}, 323 {0x2a, 0x20}, 324 {0x2b, 0x05}, 325 {0x5e, 0x10}, 326 {0x52, 0x00}, 327 {0x53, 0x7c}, 328 {0x54, 0x00}, 329 {0x55, 0x7c}, 330 {0x56, 0x00}, 331 {0x57, 0x7c}, 332 {0x58, 0x00}, 333 {0x59, 0x7c}, 334 {0xfd, 0x02}, 335 {0x9a, 0x30}, 336 {0xa8, 0x02}, 337 {0xfd, 0x02}, 338 {0xa1, 0x09}, 339 {0xa2, 0x09}, 340 {0xa3, 0x90}, 341 {0xa5, 0x08}, 342 {0xa6, 0x0c}, 343 {0xa7, 0xc0}, 344 {0xfd, 0x00}, 345 {0x24, 0x01}, 346 {0xc0, 0x16}, 347 {0xc1, 0x08}, 348 {0xc2, 0x30}, 349 {0x8e, 0x0c}, 350 {0x8f, 0xc0}, 351 {0x90, 0x09}, 352 {0x91, 0x90}, 353 {0xfd, 0x05}, 354 {0x04, 0x40}, 355 {0x07, 0x00}, 356 {0x0d, 0x01}, 357 {0x0f, 0x01}, 358 {0x10, 0x00}, 359 {0x11, 0x00}, 360 {0x12, 0x0c}, 361 {0x13, 0xcf}, 362 {0x14, 0x00}, 363 {0x15, 0x00}, 364 {0xfd, 0x00}, 365 {0x20, 0x0f}, 366 {0xe7, 0x03}, 367 {0xe7, 0x00} 368 }; 369 370 static const struct ov08d10_reg lane_2_mode_1632x1224[] = { 371 /* 1640x1232 resolution */ 372 {0xfd, 0x01}, 373 {0x1a, 0x0a}, 374 {0x1b, 0x08}, 375 {0x2a, 0x01}, 376 {0x2b, 0x9a}, 377 {0xfd, 0x01}, 378 {0x12, 0x00}, 379 {0x03, 0x05}, 380 {0x04, 0xe2}, 381 {0x07, 0x05}, 382 {0x21, 0x02}, 383 {0x24, 0x30}, 384 {0x33, 0x03}, 385 {0x31, 0x06}, 386 {0x33, 0x03}, 387 {0x01, 0x03}, 388 {0x19, 0x10}, 389 {0x42, 0x55}, 390 {0x43, 0x00}, 391 {0x47, 0x07}, 392 {0x48, 0x08}, 393 {0xb2, 0x7f}, 394 {0xb3, 0x7b}, 395 {0xbd, 0x08}, 396 {0xd2, 0x57}, 397 {0xd3, 0x10}, 398 {0xd4, 0x08}, 399 {0xd5, 0x08}, 400 {0xd6, 0x06}, 401 {0xb1, 0x00}, 402 {0xb4, 0x00}, 403 {0xb7, 0x0a}, 404 {0xbc, 0x44}, 405 {0xbf, 0x48}, 406 {0xc1, 0x10}, 407 {0xc3, 0x24}, 408 {0xc8, 0x03}, 409 {0xc9, 0xf8}, 410 {0xe1, 0x33}, 411 {0xe2, 0xbb}, 412 {0x51, 0x0c}, 413 {0x52, 0x0a}, 414 {0x57, 0x8c}, 415 {0x59, 0x09}, 416 {0x5a, 0x08}, 417 {0x5e, 0x10}, 418 {0x60, 0x02}, 419 {0x6d, 0x5c}, 420 {0x76, 0x16}, 421 {0x7c, 0x1a}, 422 {0x90, 0x28}, 423 {0x91, 0x16}, 424 {0x92, 0x1c}, 425 {0x93, 0x24}, 426 {0x95, 0x48}, 427 {0x9c, 0x06}, 428 {0xca, 0x0c}, 429 {0xce, 0x0d}, 430 {0xfd, 0x01}, 431 {0xc0, 0x00}, 432 {0xdd, 0x18}, 433 {0xde, 0x19}, 434 {0xdf, 0x32}, 435 {0xe0, 0x70}, 436 {0xfd, 0x01}, 437 {0xc2, 0x05}, 438 {0xd7, 0x88}, 439 {0xd8, 0x77}, 440 {0xd9, 0x00}, 441 {0xfd, 0x07}, 442 {0x00, 0xf8}, 443 {0x01, 0x2b}, 444 {0x05, 0x40}, 445 {0x08, 0x03}, 446 {0x09, 0x08}, 447 {0x28, 0x6f}, 448 {0x2a, 0x20}, 449 {0x2b, 0x05}, 450 {0x2c, 0x01}, 451 {0x50, 0x02}, 452 {0x51, 0x03}, 453 {0x5e, 0x00}, 454 {0x52, 0x00}, 455 {0x53, 0x7c}, 456 {0x54, 0x00}, 457 {0x55, 0x7c}, 458 {0x56, 0x00}, 459 {0x57, 0x7c}, 460 {0x58, 0x00}, 461 {0x59, 0x7c}, 462 {0xfd, 0x02}, 463 {0x9a, 0x30}, 464 {0xa8, 0x02}, 465 {0xfd, 0x02}, 466 {0xa9, 0x04}, 467 {0xaa, 0xd0}, 468 {0xab, 0x06}, 469 {0xac, 0x68}, 470 {0xa1, 0x09}, 471 {0xa2, 0x04}, 472 {0xa3, 0xc8}, 473 {0xa5, 0x04}, 474 {0xa6, 0x06}, 475 {0xa7, 0x60}, 476 {0xfd, 0x05}, 477 {0x06, 0x80}, 478 {0x18, 0x06}, 479 {0x19, 0x68}, 480 {0xfd, 0x00}, 481 {0x24, 0x01}, 482 {0xc0, 0x16}, 483 {0xc1, 0x08}, 484 {0xc2, 0x30}, 485 {0x8e, 0x06}, 486 {0x8f, 0x60}, 487 {0x90, 0x04}, 488 {0x91, 0xc8}, 489 {0x93, 0x0e}, 490 {0x94, 0x77}, 491 {0x95, 0x77}, 492 {0x96, 0x10}, 493 {0x98, 0x88}, 494 {0x9c, 0x1a}, 495 {0xfd, 0x05}, 496 {0x04, 0x40}, 497 {0x07, 0x99}, 498 {0x0d, 0x03}, 499 {0x0f, 0x03}, 500 {0x10, 0x00}, 501 {0x11, 0x00}, 502 {0x12, 0x0c}, 503 {0x13, 0xcf}, 504 {0x14, 0x00}, 505 {0x15, 0x00}, 506 {0xfd, 0x00}, 507 {0x20, 0x0f}, 508 {0xe7, 0x03}, 509 {0xe7, 0x00}, 510 }; 511 512 static const char * const ov08d10_test_pattern_menu[] = { 513 "Disabled", 514 "Standard Color Bar", 515 }; 516 517 struct ov08d10 { 518 struct v4l2_subdev sd; 519 struct media_pad pad; 520 struct v4l2_ctrl_handler ctrl_handler; 521 522 struct clk *xvclk; 523 524 /* V4L2 Controls */ 525 struct v4l2_ctrl *link_freq; 526 struct v4l2_ctrl *pixel_rate; 527 struct v4l2_ctrl *vblank; 528 struct v4l2_ctrl *hblank; 529 struct v4l2_ctrl *vflip; 530 struct v4l2_ctrl *hflip; 531 struct v4l2_ctrl *exposure; 532 533 /* Current mode */ 534 const struct ov08d10_mode *cur_mode; 535 536 /* To serialize asynchronus callbacks */ 537 struct mutex mutex; 538 539 /* Streaming on/off */ 540 bool streaming; 541 542 /* lanes index */ 543 u8 nlanes; 544 545 const struct ov08d10_lane_cfg *priv_lane; 546 u8 modes_size; 547 }; 548 549 struct ov08d10_lane_cfg { 550 const s64 link_freq_menu[2]; 551 const struct ov08d10_link_freq_config link_freq_configs[2]; 552 const struct ov08d10_mode sp_modes[3]; 553 }; 554 555 static const struct ov08d10_lane_cfg lane_cfg_2 = { 556 { 557 720000000, 558 360000000, 559 }, 560 {{ 561 .reg_list = { 562 .num_of_regs = 563 ARRAY_SIZE(mipi_data_rate_720mbps), 564 .regs = mipi_data_rate_720mbps, 565 } 566 }, 567 { 568 .reg_list = { 569 .num_of_regs = 570 ARRAY_SIZE(mipi_data_rate_360mbps), 571 .regs = mipi_data_rate_360mbps, 572 } 573 }}, 574 {{ 575 .width = 3280, 576 .height = 2460, 577 .hts = 1840, 578 .vts_def = 2504, 579 .vts_min = 2504, 580 .reg_list = { 581 .num_of_regs = ARRAY_SIZE(lane_2_mode_3280x2460), 582 .regs = lane_2_mode_3280x2460, 583 }, 584 .link_freq_index = 0, 585 .data_lanes = 2, 586 }, 587 { 588 .width = 3264, 589 .height = 2448, 590 .hts = 1840, 591 .vts_def = 2504, 592 .vts_min = 2504, 593 .reg_list = { 594 .num_of_regs = ARRAY_SIZE(lane_2_mode_3264x2448), 595 .regs = lane_2_mode_3264x2448, 596 }, 597 .link_freq_index = 0, 598 .data_lanes = 2, 599 }, 600 { 601 .width = 1632, 602 .height = 1224, 603 .hts = 1912, 604 .vts_def = 3736, 605 .vts_min = 3736, 606 .reg_list = { 607 .num_of_regs = ARRAY_SIZE(lane_2_mode_1632x1224), 608 .regs = lane_2_mode_1632x1224, 609 }, 610 .link_freq_index = 1, 611 .data_lanes = 2, 612 }} 613 }; 614 615 static u32 ov08d10_get_format_code(struct ov08d10 *ov08d10) 616 { 617 static const u32 codes[2][2] = { 618 { MEDIA_BUS_FMT_SGRBG10_1X10, MEDIA_BUS_FMT_SRGGB10_1X10}, 619 { MEDIA_BUS_FMT_SBGGR10_1X10, MEDIA_BUS_FMT_SGBRG10_1X10}, 620 }; 621 622 return codes[ov08d10->vflip->val][ov08d10->hflip->val]; 623 } 624 625 static unsigned int ov08d10_modes_num(const struct ov08d10 *ov08d10) 626 { 627 unsigned int i, count = 0; 628 629 for (i = 0; i < ARRAY_SIZE(ov08d10->priv_lane->sp_modes); i++) { 630 if (ov08d10->priv_lane->sp_modes[i].width == 0) 631 break; 632 count++; 633 } 634 635 return count; 636 } 637 638 static u64 to_rate(const s64 *link_freq_menu, 639 u32 f_index, u8 nlanes) 640 { 641 u64 pixel_rate = link_freq_menu[f_index] * 2 * nlanes; 642 643 do_div(pixel_rate, OV08D10_RGB_DEPTH); 644 645 return pixel_rate; 646 } 647 648 static u64 to_pixels_per_line(const s64 *link_freq_menu, u32 hts, 649 u32 f_index, u8 nlanes) 650 { 651 u64 ppl = hts * to_rate(link_freq_menu, f_index, nlanes); 652 653 do_div(ppl, OV08D10_SCLK); 654 655 return ppl; 656 } 657 658 static int ov08d10_write_reg_list(struct ov08d10 *ov08d10, 659 const struct ov08d10_reg_list *r_list) 660 { 661 struct i2c_client *client = v4l2_get_subdevdata(&ov08d10->sd); 662 unsigned int i; 663 int ret; 664 665 for (i = 0; i < r_list->num_of_regs; i++) { 666 ret = i2c_smbus_write_byte_data(client, r_list->regs[i].address, 667 r_list->regs[i].val); 668 if (ret) { 669 dev_err_ratelimited(&client->dev, 670 "failed to write reg 0x%2.2x. error = %d", 671 r_list->regs[i].address, ret); 672 return ret; 673 } 674 } 675 676 return 0; 677 } 678 679 static int ov08d10_update_analog_gain(struct ov08d10 *ov08d10, u32 a_gain) 680 { 681 struct i2c_client *client = v4l2_get_subdevdata(&ov08d10->sd); 682 u8 val; 683 int ret; 684 685 val = ((a_gain >> 3) & 0xFF); 686 /* CIS control registers */ 687 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x01); 688 if (ret < 0) 689 return ret; 690 691 /* update AGAIN */ 692 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_ANALOG_GAIN, val); 693 if (ret < 0) 694 return ret; 695 696 return i2c_smbus_write_byte_data(client, 697 OV08D10_REG_GLOBAL_EFFECTIVE, 0x01); 698 } 699 700 static int ov08d10_update_digital_gain(struct ov08d10 *ov08d10, u32 d_gain) 701 { 702 struct i2c_client *client = v4l2_get_subdevdata(&ov08d10->sd); 703 u8 val; 704 int ret; 705 706 d_gain = (d_gain >> 1); 707 /* CIS control registers */ 708 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x01); 709 if (ret < 0) 710 return ret; 711 712 val = ((d_gain >> 8) & 0x3F); 713 /* update DGAIN */ 714 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_MWB_DGAIN_C, val); 715 if (ret < 0) 716 return ret; 717 718 val = d_gain & 0xFF; 719 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_MWB_DGAIN_F, val); 720 if (ret < 0) 721 return ret; 722 723 return i2c_smbus_write_byte_data(client, 724 OV08D10_REG_GLOBAL_EFFECTIVE, 0x01); 725 } 726 727 static int ov08d10_set_exposure(struct ov08d10 *ov08d10, u32 exposure) 728 { 729 struct i2c_client *client = v4l2_get_subdevdata(&ov08d10->sd); 730 u8 val; 731 u8 hts_h, hts_l; 732 u32 hts, cur_vts, exp_cal; 733 int ret; 734 735 cur_vts = ov08d10->cur_mode->vts_def; 736 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x01); 737 if (ret < 0) 738 return ret; 739 740 hts_h = i2c_smbus_read_byte_data(client, 0x37); 741 hts_l = i2c_smbus_read_byte_data(client, 0x38); 742 hts = ((hts_h << 8) | (hts_l)); 743 exp_cal = 66 * OV08D10_ROWCLK / hts; 744 exposure = exposure * exp_cal / (cur_vts - OV08D10_EXPOSURE_MAX_MARGIN); 745 /* CIS control registers */ 746 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x01); 747 if (ret < 0) 748 return ret; 749 750 /* update exposure */ 751 val = ((exposure >> 16) & 0xFF); 752 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_EXPOSURE_H, val); 753 if (ret < 0) 754 return ret; 755 756 val = ((exposure >> 8) & 0xFF); 757 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_EXPOSURE_M, val); 758 if (ret < 0) 759 return ret; 760 761 val = exposure & 0xFF; 762 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_EXPOSURE_L, val); 763 if (ret < 0) 764 return ret; 765 766 return i2c_smbus_write_byte_data(client, 767 OV08D10_REG_GLOBAL_EFFECTIVE, 0x01); 768 } 769 770 static int ov08d10_set_vblank(struct ov08d10 *ov08d10, u32 vblank) 771 { 772 struct i2c_client *client = v4l2_get_subdevdata(&ov08d10->sd); 773 u8 val; 774 int ret; 775 776 /* CIS control registers */ 777 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x01); 778 if (ret < 0) 779 return ret; 780 781 val = ((vblank >> 8) & 0xFF); 782 /* update vblank */ 783 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_VTS_H, val); 784 if (ret < 0) 785 return ret; 786 787 val = vblank & 0xFF; 788 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_VTS_L, val); 789 if (ret < 0) 790 return ret; 791 792 return i2c_smbus_write_byte_data(client, 793 OV08D10_REG_GLOBAL_EFFECTIVE, 0x01); 794 } 795 796 static int ov08d10_test_pattern(struct ov08d10 *ov08d10, u32 pattern) 797 { 798 struct i2c_client *client = v4l2_get_subdevdata(&ov08d10->sd); 799 u8 val; 800 int ret; 801 802 if (pattern) 803 val = OV08D10_TEST_PATTERN_ENABLE; 804 else 805 val = OV08D10_TEST_PATTERN_DISABLE; 806 807 /* CIS control registers */ 808 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x01); 809 if (ret < 0) 810 return ret; 811 812 ret = i2c_smbus_write_byte_data(client, 813 OV08D10_REG_TEST_PATTERN, val); 814 if (ret < 0) 815 return ret; 816 817 return i2c_smbus_write_byte_data(client, 818 OV08D10_REG_GLOBAL_EFFECTIVE, 0x01); 819 } 820 821 static int ov08d10_set_ctrl_flip(struct ov08d10 *ov08d10, u32 ctrl_val) 822 { 823 struct i2c_client *client = v4l2_get_subdevdata(&ov08d10->sd); 824 u8 val; 825 int ret; 826 827 /* System control registers */ 828 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x01); 829 if (ret < 0) 830 return ret; 831 832 ret = i2c_smbus_read_byte_data(client, OV08D10_REG_FLIP_OPT); 833 if (ret < 0) 834 return ret; 835 836 val = ret | (ctrl_val & OV08D10_REG_FLIP_MASK); 837 838 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x01); 839 if (ret < 0) 840 return ret; 841 842 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_FLIP_OPT, val); 843 844 if (ret < 0) 845 return ret; 846 847 return i2c_smbus_write_byte_data(client, 848 OV08D10_REG_GLOBAL_EFFECTIVE, 0x01); 849 } 850 851 static int ov08d10_set_ctrl(struct v4l2_ctrl *ctrl) 852 { 853 struct ov08d10 *ov08d10 = container_of(ctrl->handler, 854 struct ov08d10, ctrl_handler); 855 struct i2c_client *client = v4l2_get_subdevdata(&ov08d10->sd); 856 s64 exposure_max; 857 int ret; 858 859 /* Propagate change of current control to all related controls */ 860 if (ctrl->id == V4L2_CID_VBLANK) { 861 /* Update max exposure while meeting expected vblanking */ 862 exposure_max = ov08d10->cur_mode->height + ctrl->val - 863 OV08D10_EXPOSURE_MAX_MARGIN; 864 __v4l2_ctrl_modify_range(ov08d10->exposure, 865 ov08d10->exposure->minimum, 866 exposure_max, ov08d10->exposure->step, 867 exposure_max); 868 } 869 870 /* V4L2 controls values will be applied only when power is already up */ 871 if (!pm_runtime_get_if_in_use(&client->dev)) 872 return 0; 873 874 switch (ctrl->id) { 875 case V4L2_CID_ANALOGUE_GAIN: 876 ret = ov08d10_update_analog_gain(ov08d10, ctrl->val); 877 break; 878 879 case V4L2_CID_DIGITAL_GAIN: 880 ret = ov08d10_update_digital_gain(ov08d10, ctrl->val); 881 break; 882 883 case V4L2_CID_EXPOSURE: 884 ret = ov08d10_set_exposure(ov08d10, ctrl->val); 885 break; 886 887 case V4L2_CID_VBLANK: 888 ret = ov08d10_set_vblank(ov08d10, ctrl->val); 889 break; 890 891 case V4L2_CID_TEST_PATTERN: 892 ret = ov08d10_test_pattern(ov08d10, ctrl->val); 893 break; 894 895 case V4L2_CID_HFLIP: 896 case V4L2_CID_VFLIP: 897 ret = ov08d10_set_ctrl_flip(ov08d10, 898 ov08d10->hflip->val | 899 ov08d10->vflip->val << 1); 900 break; 901 902 default: 903 ret = -EINVAL; 904 break; 905 } 906 907 pm_runtime_put(&client->dev); 908 909 return ret; 910 } 911 912 static const struct v4l2_ctrl_ops ov08d10_ctrl_ops = { 913 .s_ctrl = ov08d10_set_ctrl, 914 }; 915 916 static int ov08d10_init_controls(struct ov08d10 *ov08d10) 917 { 918 struct v4l2_ctrl_handler *ctrl_hdlr; 919 u8 link_freq_size; 920 s64 exposure_max; 921 s64 vblank_def; 922 s64 vblank_min; 923 s64 h_blank; 924 s64 pixel_rate_max; 925 const struct ov08d10_mode *mode; 926 int ret; 927 928 ctrl_hdlr = &ov08d10->ctrl_handler; 929 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8); 930 if (ret) 931 return ret; 932 933 ctrl_hdlr->lock = &ov08d10->mutex; 934 link_freq_size = ARRAY_SIZE(ov08d10->priv_lane->link_freq_menu); 935 ov08d10->link_freq = 936 v4l2_ctrl_new_int_menu(ctrl_hdlr, &ov08d10_ctrl_ops, 937 V4L2_CID_LINK_FREQ, 938 link_freq_size - 1, 939 0, 940 ov08d10->priv_lane->link_freq_menu); 941 if (ov08d10->link_freq) 942 ov08d10->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; 943 944 pixel_rate_max = to_rate(ov08d10->priv_lane->link_freq_menu, 0, 945 ov08d10->cur_mode->data_lanes); 946 ov08d10->pixel_rate = 947 v4l2_ctrl_new_std(ctrl_hdlr, &ov08d10_ctrl_ops, 948 V4L2_CID_PIXEL_RATE, 0, pixel_rate_max, 1, 949 pixel_rate_max); 950 951 mode = ov08d10->cur_mode; 952 vblank_def = mode->vts_def - mode->height; 953 vblank_min = mode->vts_min - mode->height; 954 ov08d10->vblank = 955 v4l2_ctrl_new_std(ctrl_hdlr, &ov08d10_ctrl_ops, 956 V4L2_CID_VBLANK, vblank_min, 957 OV08D10_VTS_MAX - mode->height, 1, 958 vblank_def); 959 960 h_blank = to_pixels_per_line(ov08d10->priv_lane->link_freq_menu, 961 mode->hts, mode->link_freq_index, 962 mode->data_lanes) - 963 mode->width; 964 ov08d10->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov08d10_ctrl_ops, 965 V4L2_CID_HBLANK, h_blank, h_blank, 966 1, h_blank); 967 if (ov08d10->hblank) 968 ov08d10->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; 969 970 v4l2_ctrl_new_std(ctrl_hdlr, &ov08d10_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, 971 OV08D10_ANAL_GAIN_MIN, OV08D10_ANAL_GAIN_MAX, 972 OV08D10_ANAL_GAIN_STEP, OV08D10_ANAL_GAIN_MIN); 973 974 v4l2_ctrl_new_std(ctrl_hdlr, &ov08d10_ctrl_ops, V4L2_CID_DIGITAL_GAIN, 975 OV08D10_DGTL_GAIN_MIN, OV08D10_DGTL_GAIN_MAX, 976 OV08D10_DGTL_GAIN_STEP, OV08D10_DGTL_GAIN_DEFAULT); 977 978 exposure_max = mode->vts_def - OV08D10_EXPOSURE_MAX_MARGIN; 979 ov08d10->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov08d10_ctrl_ops, 980 V4L2_CID_EXPOSURE, 981 OV08D10_EXPOSURE_MIN, 982 exposure_max, 983 OV08D10_EXPOSURE_STEP, 984 exposure_max); 985 986 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov08d10_ctrl_ops, 987 V4L2_CID_TEST_PATTERN, 988 ARRAY_SIZE(ov08d10_test_pattern_menu) - 1, 989 0, 0, ov08d10_test_pattern_menu); 990 991 ov08d10->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &ov08d10_ctrl_ops, 992 V4L2_CID_HFLIP, 0, 1, 1, 0); 993 ov08d10->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &ov08d10_ctrl_ops, 994 V4L2_CID_VFLIP, 0, 1, 1, 0); 995 if (ctrl_hdlr->error) 996 return ctrl_hdlr->error; 997 998 ov08d10->sd.ctrl_handler = ctrl_hdlr; 999 1000 return 0; 1001 } 1002 1003 static void ov08d10_update_pad_format(struct ov08d10 *ov08d10, 1004 const struct ov08d10_mode *mode, 1005 struct v4l2_mbus_framefmt *fmt) 1006 { 1007 fmt->width = mode->width; 1008 fmt->height = mode->height; 1009 fmt->code = ov08d10_get_format_code(ov08d10); 1010 fmt->field = V4L2_FIELD_NONE; 1011 } 1012 1013 static int ov08d10_start_streaming(struct ov08d10 *ov08d10) 1014 { 1015 struct i2c_client *client = v4l2_get_subdevdata(&ov08d10->sd); 1016 const struct ov08d10_reg_list *reg_list; 1017 int link_freq_index, ret; 1018 1019 link_freq_index = ov08d10->cur_mode->link_freq_index; 1020 reg_list = 1021 &ov08d10->priv_lane->link_freq_configs[link_freq_index].reg_list; 1022 1023 /* soft reset */ 1024 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x00); 1025 if (ret < 0) { 1026 dev_err(&client->dev, "failed to reset sensor"); 1027 return ret; 1028 } 1029 ret = i2c_smbus_write_byte_data(client, 0x20, 0x0e); 1030 if (ret < 0) { 1031 dev_err(&client->dev, "failed to reset sensor"); 1032 return ret; 1033 } 1034 usleep_range(3000, 4000); 1035 ret = i2c_smbus_write_byte_data(client, 0x20, 0x0b); 1036 if (ret < 0) { 1037 dev_err(&client->dev, "failed to reset sensor"); 1038 return ret; 1039 } 1040 1041 /* update sensor setting */ 1042 ret = ov08d10_write_reg_list(ov08d10, reg_list); 1043 if (ret) { 1044 dev_err(&client->dev, "failed to set plls"); 1045 return ret; 1046 } 1047 1048 reg_list = &ov08d10->cur_mode->reg_list; 1049 ret = ov08d10_write_reg_list(ov08d10, reg_list); 1050 if (ret) { 1051 dev_err(&client->dev, "failed to set mode"); 1052 return ret; 1053 } 1054 1055 ret = __v4l2_ctrl_handler_setup(ov08d10->sd.ctrl_handler); 1056 if (ret) 1057 return ret; 1058 1059 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x00); 1060 if (ret < 0) 1061 return ret; 1062 1063 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_MODE_SELECT, 1064 OV08D10_MODE_STREAMING); 1065 if (ret < 0) 1066 return ret; 1067 1068 return i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x01); 1069 } 1070 1071 static void ov08d10_stop_streaming(struct ov08d10 *ov08d10) 1072 { 1073 struct i2c_client *client = v4l2_get_subdevdata(&ov08d10->sd); 1074 int ret; 1075 1076 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x00); 1077 if (ret < 0) { 1078 dev_err(&client->dev, "failed to stop streaming"); 1079 return; 1080 } 1081 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_MODE_SELECT, 1082 OV08D10_MODE_STANDBY); 1083 if (ret < 0) { 1084 dev_err(&client->dev, "failed to stop streaming"); 1085 return; 1086 } 1087 1088 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x01); 1089 if (ret < 0) { 1090 dev_err(&client->dev, "failed to stop streaming"); 1091 return; 1092 } 1093 } 1094 1095 static int ov08d10_set_stream(struct v4l2_subdev *sd, int enable) 1096 { 1097 struct ov08d10 *ov08d10 = to_ov08d10(sd); 1098 struct i2c_client *client = v4l2_get_subdevdata(sd); 1099 int ret = 0; 1100 1101 if (ov08d10->streaming == enable) 1102 return 0; 1103 1104 mutex_lock(&ov08d10->mutex); 1105 if (enable) { 1106 ret = pm_runtime_resume_and_get(&client->dev); 1107 if (ret < 0) { 1108 mutex_unlock(&ov08d10->mutex); 1109 return ret; 1110 } 1111 1112 ret = ov08d10_start_streaming(ov08d10); 1113 if (ret) { 1114 enable = 0; 1115 ov08d10_stop_streaming(ov08d10); 1116 pm_runtime_put(&client->dev); 1117 } 1118 } else { 1119 ov08d10_stop_streaming(ov08d10); 1120 pm_runtime_put(&client->dev); 1121 } 1122 1123 ov08d10->streaming = enable; 1124 1125 /* vflip and hflip cannot change during streaming */ 1126 __v4l2_ctrl_grab(ov08d10->vflip, enable); 1127 __v4l2_ctrl_grab(ov08d10->hflip, enable); 1128 1129 mutex_unlock(&ov08d10->mutex); 1130 1131 return ret; 1132 } 1133 1134 static int __maybe_unused ov08d10_suspend(struct device *dev) 1135 { 1136 struct i2c_client *client = to_i2c_client(dev); 1137 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1138 struct ov08d10 *ov08d10 = to_ov08d10(sd); 1139 1140 mutex_lock(&ov08d10->mutex); 1141 if (ov08d10->streaming) 1142 ov08d10_stop_streaming(ov08d10); 1143 1144 mutex_unlock(&ov08d10->mutex); 1145 1146 return 0; 1147 } 1148 1149 static int __maybe_unused ov08d10_resume(struct device *dev) 1150 { 1151 struct i2c_client *client = to_i2c_client(dev); 1152 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1153 struct ov08d10 *ov08d10 = to_ov08d10(sd); 1154 int ret; 1155 1156 mutex_lock(&ov08d10->mutex); 1157 1158 if (ov08d10->streaming) { 1159 ret = ov08d10_start_streaming(ov08d10); 1160 if (ret) { 1161 ov08d10->streaming = false; 1162 ov08d10_stop_streaming(ov08d10); 1163 mutex_unlock(&ov08d10->mutex); 1164 return ret; 1165 } 1166 } 1167 1168 mutex_unlock(&ov08d10->mutex); 1169 1170 return 0; 1171 } 1172 1173 static int ov08d10_set_format(struct v4l2_subdev *sd, 1174 struct v4l2_subdev_state *sd_state, 1175 struct v4l2_subdev_format *fmt) 1176 { 1177 struct ov08d10 *ov08d10 = to_ov08d10(sd); 1178 const struct ov08d10_mode *mode; 1179 s32 vblank_def, h_blank; 1180 s64 pixel_rate; 1181 1182 mode = v4l2_find_nearest_size(ov08d10->priv_lane->sp_modes, 1183 ov08d10->modes_size, 1184 width, height, fmt->format.width, 1185 fmt->format.height); 1186 1187 mutex_lock(&ov08d10->mutex); 1188 ov08d10_update_pad_format(ov08d10, mode, &fmt->format); 1189 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 1190 *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad) = 1191 fmt->format; 1192 } else { 1193 ov08d10->cur_mode = mode; 1194 __v4l2_ctrl_s_ctrl(ov08d10->link_freq, mode->link_freq_index); 1195 pixel_rate = to_rate(ov08d10->priv_lane->link_freq_menu, 1196 mode->link_freq_index, 1197 ov08d10->cur_mode->data_lanes); 1198 __v4l2_ctrl_s_ctrl_int64(ov08d10->pixel_rate, pixel_rate); 1199 1200 /* Update limits and set FPS to default */ 1201 vblank_def = mode->vts_def - mode->height; 1202 __v4l2_ctrl_modify_range(ov08d10->vblank, 1203 mode->vts_min - mode->height, 1204 OV08D10_VTS_MAX - mode->height, 1, 1205 vblank_def); 1206 __v4l2_ctrl_s_ctrl(ov08d10->vblank, vblank_def); 1207 h_blank = to_pixels_per_line(ov08d10->priv_lane->link_freq_menu, 1208 mode->hts, 1209 mode->link_freq_index, 1210 ov08d10->cur_mode->data_lanes) 1211 - mode->width; 1212 __v4l2_ctrl_modify_range(ov08d10->hblank, h_blank, h_blank, 1, 1213 h_blank); 1214 } 1215 1216 mutex_unlock(&ov08d10->mutex); 1217 1218 return 0; 1219 } 1220 1221 static int ov08d10_get_format(struct v4l2_subdev *sd, 1222 struct v4l2_subdev_state *sd_state, 1223 struct v4l2_subdev_format *fmt) 1224 { 1225 struct ov08d10 *ov08d10 = to_ov08d10(sd); 1226 1227 mutex_lock(&ov08d10->mutex); 1228 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) 1229 fmt->format = *v4l2_subdev_get_try_format(&ov08d10->sd, 1230 sd_state, 1231 fmt->pad); 1232 else 1233 ov08d10_update_pad_format(ov08d10, ov08d10->cur_mode, 1234 &fmt->format); 1235 1236 mutex_unlock(&ov08d10->mutex); 1237 1238 return 0; 1239 } 1240 1241 static int ov08d10_enum_mbus_code(struct v4l2_subdev *sd, 1242 struct v4l2_subdev_state *sd_state, 1243 struct v4l2_subdev_mbus_code_enum *code) 1244 { 1245 struct ov08d10 *ov08d10 = to_ov08d10(sd); 1246 1247 if (code->index > 0) 1248 return -EINVAL; 1249 1250 mutex_lock(&ov08d10->mutex); 1251 code->code = ov08d10_get_format_code(ov08d10); 1252 mutex_unlock(&ov08d10->mutex); 1253 1254 return 0; 1255 } 1256 1257 static int ov08d10_enum_frame_size(struct v4l2_subdev *sd, 1258 struct v4l2_subdev_state *sd_state, 1259 struct v4l2_subdev_frame_size_enum *fse) 1260 { 1261 struct ov08d10 *ov08d10 = to_ov08d10(sd); 1262 1263 if (fse->index >= ov08d10->modes_size) 1264 return -EINVAL; 1265 1266 mutex_lock(&ov08d10->mutex); 1267 if (fse->code != ov08d10_get_format_code(ov08d10)) { 1268 mutex_unlock(&ov08d10->mutex); 1269 return -EINVAL; 1270 } 1271 mutex_unlock(&ov08d10->mutex); 1272 1273 fse->min_width = ov08d10->priv_lane->sp_modes[fse->index].width; 1274 fse->max_width = fse->min_width; 1275 fse->min_height = ov08d10->priv_lane->sp_modes[fse->index].height; 1276 fse->max_height = fse->min_height; 1277 1278 return 0; 1279 } 1280 1281 static int ov08d10_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) 1282 { 1283 struct ov08d10 *ov08d10 = to_ov08d10(sd); 1284 1285 mutex_lock(&ov08d10->mutex); 1286 ov08d10_update_pad_format(ov08d10, &ov08d10->priv_lane->sp_modes[0], 1287 v4l2_subdev_get_try_format(sd, fh->state, 0)); 1288 mutex_unlock(&ov08d10->mutex); 1289 1290 return 0; 1291 } 1292 1293 static const struct v4l2_subdev_video_ops ov08d10_video_ops = { 1294 .s_stream = ov08d10_set_stream, 1295 }; 1296 1297 static const struct v4l2_subdev_pad_ops ov08d10_pad_ops = { 1298 .set_fmt = ov08d10_set_format, 1299 .get_fmt = ov08d10_get_format, 1300 .enum_mbus_code = ov08d10_enum_mbus_code, 1301 .enum_frame_size = ov08d10_enum_frame_size, 1302 }; 1303 1304 static const struct v4l2_subdev_ops ov08d10_subdev_ops = { 1305 .video = &ov08d10_video_ops, 1306 .pad = &ov08d10_pad_ops, 1307 }; 1308 1309 static const struct v4l2_subdev_internal_ops ov08d10_internal_ops = { 1310 .open = ov08d10_open, 1311 }; 1312 1313 static int ov08d10_identify_module(struct ov08d10 *ov08d10) 1314 { 1315 struct i2c_client *client = v4l2_get_subdevdata(&ov08d10->sd); 1316 u32 val; 1317 u16 chip_id; 1318 int ret; 1319 1320 /* System control registers */ 1321 ret = i2c_smbus_write_byte_data(client, OV08D10_REG_PAGE, 0x00); 1322 if (ret < 0) 1323 return ret; 1324 1325 /* Validate the chip ID */ 1326 ret = i2c_smbus_read_byte_data(client, OV08D10_REG_CHIP_ID_0); 1327 if (ret < 0) 1328 return ret; 1329 1330 val = ret << 8; 1331 1332 ret = i2c_smbus_read_byte_data(client, OV08D10_REG_CHIP_ID_1); 1333 if (ret < 0) 1334 return ret; 1335 1336 chip_id = val | ret; 1337 1338 if ((chip_id & OV08D10_ID_MASK) != OV08D10_CHIP_ID) { 1339 dev_err(&client->dev, "unexpected sensor id(0x%04x)\n", 1340 chip_id); 1341 return -EINVAL; 1342 } 1343 1344 return 0; 1345 } 1346 1347 static int ov08d10_get_hwcfg(struct ov08d10 *ov08d10, struct device *dev) 1348 { 1349 struct fwnode_handle *ep; 1350 struct fwnode_handle *fwnode = dev_fwnode(dev); 1351 struct v4l2_fwnode_endpoint bus_cfg = { 1352 .bus_type = V4L2_MBUS_CSI2_DPHY 1353 }; 1354 u32 xvclk_rate; 1355 unsigned int i, j; 1356 int ret; 1357 1358 if (!fwnode) 1359 return -ENXIO; 1360 1361 ret = fwnode_property_read_u32(fwnode, "clock-frequency", &xvclk_rate); 1362 if (ret) 1363 return ret; 1364 1365 if (xvclk_rate != OV08D10_XVCLK_19_2) 1366 dev_warn(dev, "external clock rate %u is unsupported", 1367 xvclk_rate); 1368 1369 ep = fwnode_graph_get_next_endpoint(fwnode, NULL); 1370 if (!ep) 1371 return -ENXIO; 1372 1373 ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); 1374 fwnode_handle_put(ep); 1375 if (ret) 1376 return ret; 1377 1378 /* Get number of data lanes */ 1379 if (bus_cfg.bus.mipi_csi2.num_data_lanes != 2) { 1380 dev_err(dev, "number of CSI2 data lanes %d is not supported", 1381 bus_cfg.bus.mipi_csi2.num_data_lanes); 1382 ret = -EINVAL; 1383 goto check_hwcfg_error; 1384 } 1385 1386 dev_dbg(dev, "Using %u data lanes\n", ov08d10->cur_mode->data_lanes); 1387 1388 ov08d10->priv_lane = &lane_cfg_2; 1389 ov08d10->modes_size = ov08d10_modes_num(ov08d10); 1390 1391 if (!bus_cfg.nr_of_link_frequencies) { 1392 dev_err(dev, "no link frequencies defined"); 1393 ret = -EINVAL; 1394 goto check_hwcfg_error; 1395 } 1396 1397 for (i = 0; i < ARRAY_SIZE(ov08d10->priv_lane->link_freq_menu); i++) { 1398 for (j = 0; j < bus_cfg.nr_of_link_frequencies; j++) { 1399 if (ov08d10->priv_lane->link_freq_menu[i] == 1400 bus_cfg.link_frequencies[j]) 1401 break; 1402 } 1403 1404 if (j == bus_cfg.nr_of_link_frequencies) { 1405 dev_err(dev, "no link frequency %lld supported", 1406 ov08d10->priv_lane->link_freq_menu[i]); 1407 ret = -EINVAL; 1408 goto check_hwcfg_error; 1409 } 1410 } 1411 1412 check_hwcfg_error: 1413 v4l2_fwnode_endpoint_free(&bus_cfg); 1414 1415 return ret; 1416 } 1417 1418 static int ov08d10_remove(struct i2c_client *client) 1419 { 1420 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1421 struct ov08d10 *ov08d10 = to_ov08d10(sd); 1422 1423 v4l2_async_unregister_subdev(sd); 1424 media_entity_cleanup(&sd->entity); 1425 v4l2_ctrl_handler_free(sd->ctrl_handler); 1426 pm_runtime_disable(&client->dev); 1427 mutex_destroy(&ov08d10->mutex); 1428 1429 return 0; 1430 } 1431 1432 static int ov08d10_probe(struct i2c_client *client) 1433 { 1434 struct ov08d10 *ov08d10; 1435 int ret; 1436 1437 ov08d10 = devm_kzalloc(&client->dev, sizeof(*ov08d10), GFP_KERNEL); 1438 if (!ov08d10) 1439 return -ENOMEM; 1440 1441 ret = ov08d10_get_hwcfg(ov08d10, &client->dev); 1442 if (ret) { 1443 dev_err(&client->dev, "failed to get HW configuration: %d", 1444 ret); 1445 return ret; 1446 } 1447 1448 v4l2_i2c_subdev_init(&ov08d10->sd, client, &ov08d10_subdev_ops); 1449 1450 ret = ov08d10_identify_module(ov08d10); 1451 if (ret) { 1452 dev_err(&client->dev, "failed to find sensor: %d", ret); 1453 return ret; 1454 } 1455 1456 mutex_init(&ov08d10->mutex); 1457 ov08d10->cur_mode = &ov08d10->priv_lane->sp_modes[0]; 1458 ret = ov08d10_init_controls(ov08d10); 1459 if (ret) { 1460 dev_err(&client->dev, "failed to init controls: %d", ret); 1461 goto probe_error_v4l2_ctrl_handler_free; 1462 } 1463 1464 ov08d10->sd.internal_ops = &ov08d10_internal_ops; 1465 ov08d10->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1466 ov08d10->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 1467 ov08d10->pad.flags = MEDIA_PAD_FL_SOURCE; 1468 ret = media_entity_pads_init(&ov08d10->sd.entity, 1, &ov08d10->pad); 1469 if (ret) { 1470 dev_err(&client->dev, "failed to init entity pads: %d", ret); 1471 goto probe_error_v4l2_ctrl_handler_free; 1472 } 1473 1474 ret = v4l2_async_register_subdev_sensor(&ov08d10->sd); 1475 if (ret < 0) { 1476 dev_err(&client->dev, "failed to register V4L2 subdev: %d", 1477 ret); 1478 goto probe_error_media_entity_cleanup; 1479 } 1480 1481 /* 1482 * Device is already turned on by i2c-core with ACPI domain PM. 1483 * Enable runtime PM and turn off the device. 1484 */ 1485 pm_runtime_set_active(&client->dev); 1486 pm_runtime_enable(&client->dev); 1487 pm_runtime_idle(&client->dev); 1488 1489 return 0; 1490 1491 probe_error_media_entity_cleanup: 1492 media_entity_cleanup(&ov08d10->sd.entity); 1493 1494 probe_error_v4l2_ctrl_handler_free: 1495 v4l2_ctrl_handler_free(ov08d10->sd.ctrl_handler); 1496 mutex_destroy(&ov08d10->mutex); 1497 1498 return ret; 1499 } 1500 1501 static const struct dev_pm_ops ov08d10_pm_ops = { 1502 SET_SYSTEM_SLEEP_PM_OPS(ov08d10_suspend, ov08d10_resume) 1503 }; 1504 1505 #ifdef CONFIG_ACPI 1506 static const struct acpi_device_id ov08d10_acpi_ids[] = { 1507 { "OVTI08D1" }, 1508 { /* sentinel */ } 1509 }; 1510 1511 MODULE_DEVICE_TABLE(acpi, ov08d10_acpi_ids); 1512 #endif 1513 1514 static struct i2c_driver ov08d10_i2c_driver = { 1515 .driver = { 1516 .name = "ov08d10", 1517 .pm = &ov08d10_pm_ops, 1518 .acpi_match_table = ACPI_PTR(ov08d10_acpi_ids), 1519 }, 1520 .probe_new = ov08d10_probe, 1521 .remove = ov08d10_remove, 1522 }; 1523 1524 module_i2c_driver(ov08d10_i2c_driver); 1525 1526 MODULE_AUTHOR("Su, Jimmy <jimmy.su@intel.com>"); 1527 MODULE_DESCRIPTION("OmniVision ov08d10 sensor driver"); 1528 MODULE_LICENSE("GPL v2"); 1529