1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright (C) 2018 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 <media/v4l2-ctrls.h> 11 #include <media/v4l2-device.h> 12 #include <asm/unaligned.h> 13 14 #define IMX258_REG_VALUE_08BIT 1 15 #define IMX258_REG_VALUE_16BIT 2 16 17 #define IMX258_REG_MODE_SELECT 0x0100 18 #define IMX258_MODE_STANDBY 0x00 19 #define IMX258_MODE_STREAMING 0x01 20 21 /* Chip ID */ 22 #define IMX258_REG_CHIP_ID 0x0016 23 #define IMX258_CHIP_ID 0x0258 24 25 /* V_TIMING internal */ 26 #define IMX258_VTS_30FPS 0x0c50 27 #define IMX258_VTS_30FPS_2K 0x0638 28 #define IMX258_VTS_30FPS_VGA 0x034c 29 #define IMX258_VTS_MAX 0xffff 30 31 /*Frame Length Line*/ 32 #define IMX258_FLL_MIN 0x08a6 33 #define IMX258_FLL_MAX 0xffff 34 #define IMX258_FLL_STEP 1 35 #define IMX258_FLL_DEFAULT 0x0c98 36 37 /* HBLANK control - read only */ 38 #define IMX258_PPL_DEFAULT 5352 39 40 /* Exposure control */ 41 #define IMX258_REG_EXPOSURE 0x0202 42 #define IMX258_EXPOSURE_MIN 4 43 #define IMX258_EXPOSURE_STEP 1 44 #define IMX258_EXPOSURE_DEFAULT 0x640 45 #define IMX258_EXPOSURE_MAX 65535 46 47 /* Analog gain control */ 48 #define IMX258_REG_ANALOG_GAIN 0x0204 49 #define IMX258_ANA_GAIN_MIN 0 50 #define IMX258_ANA_GAIN_MAX 480 51 #define IMX258_ANA_GAIN_STEP 1 52 #define IMX258_ANA_GAIN_DEFAULT 0x0 53 54 /* Digital gain control */ 55 #define IMX258_REG_GR_DIGITAL_GAIN 0x020e 56 #define IMX258_REG_R_DIGITAL_GAIN 0x0210 57 #define IMX258_REG_B_DIGITAL_GAIN 0x0212 58 #define IMX258_REG_GB_DIGITAL_GAIN 0x0214 59 #define IMX258_DGTL_GAIN_MIN 0 60 #define IMX258_DGTL_GAIN_MAX 4096 /* Max = 0xFFF */ 61 #define IMX258_DGTL_GAIN_DEFAULT 1024 62 #define IMX258_DGTL_GAIN_STEP 1 63 64 /* HDR control */ 65 #define IMX258_REG_HDR 0x0220 66 #define IMX258_HDR_ON BIT(0) 67 #define IMX258_REG_HDR_RATIO 0x0222 68 #define IMX258_HDR_RATIO_MIN 0 69 #define IMX258_HDR_RATIO_MAX 5 70 #define IMX258_HDR_RATIO_STEP 1 71 #define IMX258_HDR_RATIO_DEFAULT 0x0 72 73 /* Test Pattern Control */ 74 #define IMX258_REG_TEST_PATTERN 0x0600 75 76 /* Orientation */ 77 #define REG_MIRROR_FLIP_CONTROL 0x0101 78 #define REG_CONFIG_MIRROR_FLIP 0x03 79 #define REG_CONFIG_FLIP_TEST_PATTERN 0x02 80 81 /* Input clock frequency in Hz */ 82 #define IMX258_INPUT_CLOCK_FREQ 19200000 83 84 struct imx258_reg { 85 u16 address; 86 u8 val; 87 }; 88 89 struct imx258_reg_list { 90 u32 num_of_regs; 91 const struct imx258_reg *regs; 92 }; 93 94 /* Link frequency config */ 95 struct imx258_link_freq_config { 96 u32 pixels_per_line; 97 98 /* PLL registers for this link frequency */ 99 struct imx258_reg_list reg_list; 100 }; 101 102 /* Mode : resolution and related config&values */ 103 struct imx258_mode { 104 /* Frame width */ 105 u32 width; 106 /* Frame height */ 107 u32 height; 108 109 /* V-timing */ 110 u32 vts_def; 111 u32 vts_min; 112 113 /* Index of Link frequency config to be used */ 114 u32 link_freq_index; 115 /* Default register values */ 116 struct imx258_reg_list reg_list; 117 }; 118 119 /* 4208x3118 needs 1267Mbps/lane, 4 lanes */ 120 static const struct imx258_reg mipi_data_rate_1267mbps[] = { 121 { 0x0301, 0x05 }, 122 { 0x0303, 0x02 }, 123 { 0x0305, 0x03 }, 124 { 0x0306, 0x00 }, 125 { 0x0307, 0xC6 }, 126 { 0x0309, 0x0A }, 127 { 0x030B, 0x01 }, 128 { 0x030D, 0x02 }, 129 { 0x030E, 0x00 }, 130 { 0x030F, 0xD8 }, 131 { 0x0310, 0x00 }, 132 { 0x0820, 0x13 }, 133 { 0x0821, 0x4C }, 134 { 0x0822, 0xCC }, 135 { 0x0823, 0xCC }, 136 }; 137 138 static const struct imx258_reg mipi_data_rate_640mbps[] = { 139 { 0x0301, 0x05 }, 140 { 0x0303, 0x02 }, 141 { 0x0305, 0x03 }, 142 { 0x0306, 0x00 }, 143 { 0x0307, 0x64 }, 144 { 0x0309, 0x0A }, 145 { 0x030B, 0x01 }, 146 { 0x030D, 0x02 }, 147 { 0x030E, 0x00 }, 148 { 0x030F, 0xD8 }, 149 { 0x0310, 0x00 }, 150 { 0x0820, 0x0A }, 151 { 0x0821, 0x00 }, 152 { 0x0822, 0x00 }, 153 { 0x0823, 0x00 }, 154 }; 155 156 static const struct imx258_reg mode_4208x3118_regs[] = { 157 { 0x0136, 0x13 }, 158 { 0x0137, 0x33 }, 159 { 0x3051, 0x00 }, 160 { 0x3052, 0x00 }, 161 { 0x4E21, 0x14 }, 162 { 0x6B11, 0xCF }, 163 { 0x7FF0, 0x08 }, 164 { 0x7FF1, 0x0F }, 165 { 0x7FF2, 0x08 }, 166 { 0x7FF3, 0x1B }, 167 { 0x7FF4, 0x23 }, 168 { 0x7FF5, 0x60 }, 169 { 0x7FF6, 0x00 }, 170 { 0x7FF7, 0x01 }, 171 { 0x7FF8, 0x00 }, 172 { 0x7FF9, 0x78 }, 173 { 0x7FFA, 0x00 }, 174 { 0x7FFB, 0x00 }, 175 { 0x7FFC, 0x00 }, 176 { 0x7FFD, 0x00 }, 177 { 0x7FFE, 0x00 }, 178 { 0x7FFF, 0x03 }, 179 { 0x7F76, 0x03 }, 180 { 0x7F77, 0xFE }, 181 { 0x7FA8, 0x03 }, 182 { 0x7FA9, 0xFE }, 183 { 0x7B24, 0x81 }, 184 { 0x7B25, 0x00 }, 185 { 0x6564, 0x07 }, 186 { 0x6B0D, 0x41 }, 187 { 0x653D, 0x04 }, 188 { 0x6B05, 0x8C }, 189 { 0x6B06, 0xF9 }, 190 { 0x6B08, 0x65 }, 191 { 0x6B09, 0xFC }, 192 { 0x6B0A, 0xCF }, 193 { 0x6B0B, 0xD2 }, 194 { 0x6700, 0x0E }, 195 { 0x6707, 0x0E }, 196 { 0x9104, 0x00 }, 197 { 0x4648, 0x7F }, 198 { 0x7420, 0x00 }, 199 { 0x7421, 0x1C }, 200 { 0x7422, 0x00 }, 201 { 0x7423, 0xD7 }, 202 { 0x5F04, 0x00 }, 203 { 0x5F05, 0xED }, 204 { 0x0112, 0x0A }, 205 { 0x0113, 0x0A }, 206 { 0x0114, 0x03 }, 207 { 0x0342, 0x14 }, 208 { 0x0343, 0xE8 }, 209 { 0x0340, 0x0C }, 210 { 0x0341, 0x50 }, 211 { 0x0344, 0x00 }, 212 { 0x0345, 0x00 }, 213 { 0x0346, 0x00 }, 214 { 0x0347, 0x00 }, 215 { 0x0348, 0x10 }, 216 { 0x0349, 0x6F }, 217 { 0x034A, 0x0C }, 218 { 0x034B, 0x2E }, 219 { 0x0381, 0x01 }, 220 { 0x0383, 0x01 }, 221 { 0x0385, 0x01 }, 222 { 0x0387, 0x01 }, 223 { 0x0900, 0x00 }, 224 { 0x0901, 0x11 }, 225 { 0x0401, 0x00 }, 226 { 0x0404, 0x00 }, 227 { 0x0405, 0x10 }, 228 { 0x0408, 0x00 }, 229 { 0x0409, 0x00 }, 230 { 0x040A, 0x00 }, 231 { 0x040B, 0x00 }, 232 { 0x040C, 0x10 }, 233 { 0x040D, 0x70 }, 234 { 0x040E, 0x0C }, 235 { 0x040F, 0x30 }, 236 { 0x3038, 0x00 }, 237 { 0x303A, 0x00 }, 238 { 0x303B, 0x10 }, 239 { 0x300D, 0x00 }, 240 { 0x034C, 0x10 }, 241 { 0x034D, 0x70 }, 242 { 0x034E, 0x0C }, 243 { 0x034F, 0x30 }, 244 { 0x0350, 0x01 }, 245 { 0x0202, 0x0C }, 246 { 0x0203, 0x46 }, 247 { 0x0204, 0x00 }, 248 { 0x0205, 0x00 }, 249 { 0x020E, 0x01 }, 250 { 0x020F, 0x00 }, 251 { 0x0210, 0x01 }, 252 { 0x0211, 0x00 }, 253 { 0x0212, 0x01 }, 254 { 0x0213, 0x00 }, 255 { 0x0214, 0x01 }, 256 { 0x0215, 0x00 }, 257 { 0x7BCD, 0x00 }, 258 { 0x94DC, 0x20 }, 259 { 0x94DD, 0x20 }, 260 { 0x94DE, 0x20 }, 261 { 0x95DC, 0x20 }, 262 { 0x95DD, 0x20 }, 263 { 0x95DE, 0x20 }, 264 { 0x7FB0, 0x00 }, 265 { 0x9010, 0x3E }, 266 { 0x9419, 0x50 }, 267 { 0x941B, 0x50 }, 268 { 0x9519, 0x50 }, 269 { 0x951B, 0x50 }, 270 { 0x3030, 0x00 }, 271 { 0x3032, 0x00 }, 272 { 0x0220, 0x00 }, 273 }; 274 275 static const struct imx258_reg mode_2104_1560_regs[] = { 276 { 0x0136, 0x13 }, 277 { 0x0137, 0x33 }, 278 { 0x3051, 0x00 }, 279 { 0x3052, 0x00 }, 280 { 0x4E21, 0x14 }, 281 { 0x6B11, 0xCF }, 282 { 0x7FF0, 0x08 }, 283 { 0x7FF1, 0x0F }, 284 { 0x7FF2, 0x08 }, 285 { 0x7FF3, 0x1B }, 286 { 0x7FF4, 0x23 }, 287 { 0x7FF5, 0x60 }, 288 { 0x7FF6, 0x00 }, 289 { 0x7FF7, 0x01 }, 290 { 0x7FF8, 0x00 }, 291 { 0x7FF9, 0x78 }, 292 { 0x7FFA, 0x00 }, 293 { 0x7FFB, 0x00 }, 294 { 0x7FFC, 0x00 }, 295 { 0x7FFD, 0x00 }, 296 { 0x7FFE, 0x00 }, 297 { 0x7FFF, 0x03 }, 298 { 0x7F76, 0x03 }, 299 { 0x7F77, 0xFE }, 300 { 0x7FA8, 0x03 }, 301 { 0x7FA9, 0xFE }, 302 { 0x7B24, 0x81 }, 303 { 0x7B25, 0x00 }, 304 { 0x6564, 0x07 }, 305 { 0x6B0D, 0x41 }, 306 { 0x653D, 0x04 }, 307 { 0x6B05, 0x8C }, 308 { 0x6B06, 0xF9 }, 309 { 0x6B08, 0x65 }, 310 { 0x6B09, 0xFC }, 311 { 0x6B0A, 0xCF }, 312 { 0x6B0B, 0xD2 }, 313 { 0x6700, 0x0E }, 314 { 0x6707, 0x0E }, 315 { 0x9104, 0x00 }, 316 { 0x4648, 0x7F }, 317 { 0x7420, 0x00 }, 318 { 0x7421, 0x1C }, 319 { 0x7422, 0x00 }, 320 { 0x7423, 0xD7 }, 321 { 0x5F04, 0x00 }, 322 { 0x5F05, 0xED }, 323 { 0x0112, 0x0A }, 324 { 0x0113, 0x0A }, 325 { 0x0114, 0x03 }, 326 { 0x0342, 0x14 }, 327 { 0x0343, 0xE8 }, 328 { 0x0340, 0x06 }, 329 { 0x0341, 0x38 }, 330 { 0x0344, 0x00 }, 331 { 0x0345, 0x00 }, 332 { 0x0346, 0x00 }, 333 { 0x0347, 0x00 }, 334 { 0x0348, 0x10 }, 335 { 0x0349, 0x6F }, 336 { 0x034A, 0x0C }, 337 { 0x034B, 0x2E }, 338 { 0x0381, 0x01 }, 339 { 0x0383, 0x01 }, 340 { 0x0385, 0x01 }, 341 { 0x0387, 0x01 }, 342 { 0x0900, 0x01 }, 343 { 0x0901, 0x12 }, 344 { 0x0401, 0x01 }, 345 { 0x0404, 0x00 }, 346 { 0x0405, 0x20 }, 347 { 0x0408, 0x00 }, 348 { 0x0409, 0x02 }, 349 { 0x040A, 0x00 }, 350 { 0x040B, 0x00 }, 351 { 0x040C, 0x10 }, 352 { 0x040D, 0x6A }, 353 { 0x040E, 0x06 }, 354 { 0x040F, 0x18 }, 355 { 0x3038, 0x00 }, 356 { 0x303A, 0x00 }, 357 { 0x303B, 0x10 }, 358 { 0x300D, 0x00 }, 359 { 0x034C, 0x08 }, 360 { 0x034D, 0x38 }, 361 { 0x034E, 0x06 }, 362 { 0x034F, 0x18 }, 363 { 0x0350, 0x01 }, 364 { 0x0202, 0x06 }, 365 { 0x0203, 0x2E }, 366 { 0x0204, 0x00 }, 367 { 0x0205, 0x00 }, 368 { 0x020E, 0x01 }, 369 { 0x020F, 0x00 }, 370 { 0x0210, 0x01 }, 371 { 0x0211, 0x00 }, 372 { 0x0212, 0x01 }, 373 { 0x0213, 0x00 }, 374 { 0x0214, 0x01 }, 375 { 0x0215, 0x00 }, 376 { 0x7BCD, 0x01 }, 377 { 0x94DC, 0x20 }, 378 { 0x94DD, 0x20 }, 379 { 0x94DE, 0x20 }, 380 { 0x95DC, 0x20 }, 381 { 0x95DD, 0x20 }, 382 { 0x95DE, 0x20 }, 383 { 0x7FB0, 0x00 }, 384 { 0x9010, 0x3E }, 385 { 0x9419, 0x50 }, 386 { 0x941B, 0x50 }, 387 { 0x9519, 0x50 }, 388 { 0x951B, 0x50 }, 389 { 0x3030, 0x00 }, 390 { 0x3032, 0x00 }, 391 { 0x0220, 0x00 }, 392 }; 393 394 static const struct imx258_reg mode_1048_780_regs[] = { 395 { 0x0136, 0x13 }, 396 { 0x0137, 0x33 }, 397 { 0x3051, 0x00 }, 398 { 0x3052, 0x00 }, 399 { 0x4E21, 0x14 }, 400 { 0x6B11, 0xCF }, 401 { 0x7FF0, 0x08 }, 402 { 0x7FF1, 0x0F }, 403 { 0x7FF2, 0x08 }, 404 { 0x7FF3, 0x1B }, 405 { 0x7FF4, 0x23 }, 406 { 0x7FF5, 0x60 }, 407 { 0x7FF6, 0x00 }, 408 { 0x7FF7, 0x01 }, 409 { 0x7FF8, 0x00 }, 410 { 0x7FF9, 0x78 }, 411 { 0x7FFA, 0x00 }, 412 { 0x7FFB, 0x00 }, 413 { 0x7FFC, 0x00 }, 414 { 0x7FFD, 0x00 }, 415 { 0x7FFE, 0x00 }, 416 { 0x7FFF, 0x03 }, 417 { 0x7F76, 0x03 }, 418 { 0x7F77, 0xFE }, 419 { 0x7FA8, 0x03 }, 420 { 0x7FA9, 0xFE }, 421 { 0x7B24, 0x81 }, 422 { 0x7B25, 0x00 }, 423 { 0x6564, 0x07 }, 424 { 0x6B0D, 0x41 }, 425 { 0x653D, 0x04 }, 426 { 0x6B05, 0x8C }, 427 { 0x6B06, 0xF9 }, 428 { 0x6B08, 0x65 }, 429 { 0x6B09, 0xFC }, 430 { 0x6B0A, 0xCF }, 431 { 0x6B0B, 0xD2 }, 432 { 0x6700, 0x0E }, 433 { 0x6707, 0x0E }, 434 { 0x9104, 0x00 }, 435 { 0x4648, 0x7F }, 436 { 0x7420, 0x00 }, 437 { 0x7421, 0x1C }, 438 { 0x7422, 0x00 }, 439 { 0x7423, 0xD7 }, 440 { 0x5F04, 0x00 }, 441 { 0x5F05, 0xED }, 442 { 0x0112, 0x0A }, 443 { 0x0113, 0x0A }, 444 { 0x0114, 0x03 }, 445 { 0x0342, 0x14 }, 446 { 0x0343, 0xE8 }, 447 { 0x0340, 0x03 }, 448 { 0x0341, 0x4C }, 449 { 0x0344, 0x00 }, 450 { 0x0345, 0x00 }, 451 { 0x0346, 0x00 }, 452 { 0x0347, 0x00 }, 453 { 0x0348, 0x10 }, 454 { 0x0349, 0x6F }, 455 { 0x034A, 0x0C }, 456 { 0x034B, 0x2E }, 457 { 0x0381, 0x01 }, 458 { 0x0383, 0x01 }, 459 { 0x0385, 0x01 }, 460 { 0x0387, 0x01 }, 461 { 0x0900, 0x01 }, 462 { 0x0901, 0x14 }, 463 { 0x0401, 0x01 }, 464 { 0x0404, 0x00 }, 465 { 0x0405, 0x40 }, 466 { 0x0408, 0x00 }, 467 { 0x0409, 0x06 }, 468 { 0x040A, 0x00 }, 469 { 0x040B, 0x00 }, 470 { 0x040C, 0x10 }, 471 { 0x040D, 0x64 }, 472 { 0x040E, 0x03 }, 473 { 0x040F, 0x0C }, 474 { 0x3038, 0x00 }, 475 { 0x303A, 0x00 }, 476 { 0x303B, 0x10 }, 477 { 0x300D, 0x00 }, 478 { 0x034C, 0x04 }, 479 { 0x034D, 0x18 }, 480 { 0x034E, 0x03 }, 481 { 0x034F, 0x0C }, 482 { 0x0350, 0x01 }, 483 { 0x0202, 0x03 }, 484 { 0x0203, 0x42 }, 485 { 0x0204, 0x00 }, 486 { 0x0205, 0x00 }, 487 { 0x020E, 0x01 }, 488 { 0x020F, 0x00 }, 489 { 0x0210, 0x01 }, 490 { 0x0211, 0x00 }, 491 { 0x0212, 0x01 }, 492 { 0x0213, 0x00 }, 493 { 0x0214, 0x01 }, 494 { 0x0215, 0x00 }, 495 { 0x7BCD, 0x00 }, 496 { 0x94DC, 0x20 }, 497 { 0x94DD, 0x20 }, 498 { 0x94DE, 0x20 }, 499 { 0x95DC, 0x20 }, 500 { 0x95DD, 0x20 }, 501 { 0x95DE, 0x20 }, 502 { 0x7FB0, 0x00 }, 503 { 0x9010, 0x3E }, 504 { 0x9419, 0x50 }, 505 { 0x941B, 0x50 }, 506 { 0x9519, 0x50 }, 507 { 0x951B, 0x50 }, 508 { 0x3030, 0x00 }, 509 { 0x3032, 0x00 }, 510 { 0x0220, 0x00 }, 511 }; 512 513 static const char * const imx258_test_pattern_menu[] = { 514 "Disabled", 515 "Solid Colour", 516 "Eight Vertical Colour Bars", 517 "Colour Bars With Fade to Grey", 518 "Pseudorandom Sequence (PN9)", 519 }; 520 521 /* Configurations for supported link frequencies */ 522 #define IMX258_LINK_FREQ_634MHZ 633600000ULL 523 #define IMX258_LINK_FREQ_320MHZ 320000000ULL 524 525 enum { 526 IMX258_LINK_FREQ_1267MBPS, 527 IMX258_LINK_FREQ_640MBPS, 528 }; 529 530 /* 531 * pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample 532 * data rate => double data rate; number of lanes => 4; bits per pixel => 10 533 */ 534 static u64 link_freq_to_pixel_rate(u64 f) 535 { 536 f *= 2 * 4; 537 do_div(f, 10); 538 539 return f; 540 } 541 542 /* Menu items for LINK_FREQ V4L2 control */ 543 static const s64 link_freq_menu_items[] = { 544 IMX258_LINK_FREQ_634MHZ, 545 IMX258_LINK_FREQ_320MHZ, 546 }; 547 548 /* Link frequency configs */ 549 static const struct imx258_link_freq_config link_freq_configs[] = { 550 [IMX258_LINK_FREQ_1267MBPS] = { 551 .pixels_per_line = IMX258_PPL_DEFAULT, 552 .reg_list = { 553 .num_of_regs = ARRAY_SIZE(mipi_data_rate_1267mbps), 554 .regs = mipi_data_rate_1267mbps, 555 } 556 }, 557 [IMX258_LINK_FREQ_640MBPS] = { 558 .pixels_per_line = IMX258_PPL_DEFAULT, 559 .reg_list = { 560 .num_of_regs = ARRAY_SIZE(mipi_data_rate_640mbps), 561 .regs = mipi_data_rate_640mbps, 562 } 563 }, 564 }; 565 566 /* Mode configs */ 567 static const struct imx258_mode supported_modes[] = { 568 { 569 .width = 4208, 570 .height = 3118, 571 .vts_def = IMX258_VTS_30FPS, 572 .vts_min = IMX258_VTS_30FPS, 573 .reg_list = { 574 .num_of_regs = ARRAY_SIZE(mode_4208x3118_regs), 575 .regs = mode_4208x3118_regs, 576 }, 577 .link_freq_index = IMX258_LINK_FREQ_1267MBPS, 578 }, 579 { 580 .width = 2104, 581 .height = 1560, 582 .vts_def = IMX258_VTS_30FPS_2K, 583 .vts_min = IMX258_VTS_30FPS_2K, 584 .reg_list = { 585 .num_of_regs = ARRAY_SIZE(mode_2104_1560_regs), 586 .regs = mode_2104_1560_regs, 587 }, 588 .link_freq_index = IMX258_LINK_FREQ_640MBPS, 589 }, 590 { 591 .width = 1048, 592 .height = 780, 593 .vts_def = IMX258_VTS_30FPS_VGA, 594 .vts_min = IMX258_VTS_30FPS_VGA, 595 .reg_list = { 596 .num_of_regs = ARRAY_SIZE(mode_1048_780_regs), 597 .regs = mode_1048_780_regs, 598 }, 599 .link_freq_index = IMX258_LINK_FREQ_640MBPS, 600 }, 601 }; 602 603 struct imx258 { 604 struct v4l2_subdev sd; 605 struct media_pad pad; 606 607 struct v4l2_ctrl_handler ctrl_handler; 608 /* V4L2 Controls */ 609 struct v4l2_ctrl *link_freq; 610 struct v4l2_ctrl *pixel_rate; 611 struct v4l2_ctrl *vblank; 612 struct v4l2_ctrl *hblank; 613 struct v4l2_ctrl *exposure; 614 615 /* Current mode */ 616 const struct imx258_mode *cur_mode; 617 618 /* 619 * Mutex for serialized access: 620 * Protect sensor module set pad format and start/stop streaming safely. 621 */ 622 struct mutex mutex; 623 624 /* Streaming on/off */ 625 bool streaming; 626 627 struct clk *clk; 628 }; 629 630 static inline struct imx258 *to_imx258(struct v4l2_subdev *_sd) 631 { 632 return container_of(_sd, struct imx258, sd); 633 } 634 635 /* Read registers up to 2 at a time */ 636 static int imx258_read_reg(struct imx258 *imx258, u16 reg, u32 len, u32 *val) 637 { 638 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); 639 struct i2c_msg msgs[2]; 640 u8 addr_buf[2] = { reg >> 8, reg & 0xff }; 641 u8 data_buf[4] = { 0, }; 642 int ret; 643 644 if (len > 4) 645 return -EINVAL; 646 647 /* Write register address */ 648 msgs[0].addr = client->addr; 649 msgs[0].flags = 0; 650 msgs[0].len = ARRAY_SIZE(addr_buf); 651 msgs[0].buf = addr_buf; 652 653 /* Read data from register */ 654 msgs[1].addr = client->addr; 655 msgs[1].flags = I2C_M_RD; 656 msgs[1].len = len; 657 msgs[1].buf = &data_buf[4 - len]; 658 659 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); 660 if (ret != ARRAY_SIZE(msgs)) 661 return -EIO; 662 663 *val = get_unaligned_be32(data_buf); 664 665 return 0; 666 } 667 668 /* Write registers up to 2 at a time */ 669 static int imx258_write_reg(struct imx258 *imx258, u16 reg, u32 len, u32 val) 670 { 671 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); 672 u8 buf[6]; 673 674 if (len > 4) 675 return -EINVAL; 676 677 put_unaligned_be16(reg, buf); 678 put_unaligned_be32(val << (8 * (4 - len)), buf + 2); 679 if (i2c_master_send(client, buf, len + 2) != len + 2) 680 return -EIO; 681 682 return 0; 683 } 684 685 /* Write a list of registers */ 686 static int imx258_write_regs(struct imx258 *imx258, 687 const struct imx258_reg *regs, u32 len) 688 { 689 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); 690 unsigned int i; 691 int ret; 692 693 for (i = 0; i < len; i++) { 694 ret = imx258_write_reg(imx258, regs[i].address, 1, 695 regs[i].val); 696 if (ret) { 697 dev_err_ratelimited( 698 &client->dev, 699 "Failed to write reg 0x%4.4x. error = %d\n", 700 regs[i].address, ret); 701 702 return ret; 703 } 704 } 705 706 return 0; 707 } 708 709 /* Open sub-device */ 710 static int imx258_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) 711 { 712 struct v4l2_mbus_framefmt *try_fmt = 713 v4l2_subdev_get_try_format(sd, fh->state, 0); 714 715 /* Initialize try_fmt */ 716 try_fmt->width = supported_modes[0].width; 717 try_fmt->height = supported_modes[0].height; 718 try_fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; 719 try_fmt->field = V4L2_FIELD_NONE; 720 721 return 0; 722 } 723 724 static int imx258_update_digital_gain(struct imx258 *imx258, u32 len, u32 val) 725 { 726 int ret; 727 728 ret = imx258_write_reg(imx258, IMX258_REG_GR_DIGITAL_GAIN, 729 IMX258_REG_VALUE_16BIT, 730 val); 731 if (ret) 732 return ret; 733 ret = imx258_write_reg(imx258, IMX258_REG_GB_DIGITAL_GAIN, 734 IMX258_REG_VALUE_16BIT, 735 val); 736 if (ret) 737 return ret; 738 ret = imx258_write_reg(imx258, IMX258_REG_R_DIGITAL_GAIN, 739 IMX258_REG_VALUE_16BIT, 740 val); 741 if (ret) 742 return ret; 743 ret = imx258_write_reg(imx258, IMX258_REG_B_DIGITAL_GAIN, 744 IMX258_REG_VALUE_16BIT, 745 val); 746 if (ret) 747 return ret; 748 return 0; 749 } 750 751 static int imx258_set_ctrl(struct v4l2_ctrl *ctrl) 752 { 753 struct imx258 *imx258 = 754 container_of(ctrl->handler, struct imx258, ctrl_handler); 755 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); 756 int ret = 0; 757 758 /* 759 * Applying V4L2 control value only happens 760 * when power is up for streaming 761 */ 762 if (pm_runtime_get_if_in_use(&client->dev) == 0) 763 return 0; 764 765 switch (ctrl->id) { 766 case V4L2_CID_ANALOGUE_GAIN: 767 ret = imx258_write_reg(imx258, IMX258_REG_ANALOG_GAIN, 768 IMX258_REG_VALUE_16BIT, 769 ctrl->val); 770 break; 771 case V4L2_CID_EXPOSURE: 772 ret = imx258_write_reg(imx258, IMX258_REG_EXPOSURE, 773 IMX258_REG_VALUE_16BIT, 774 ctrl->val); 775 break; 776 case V4L2_CID_DIGITAL_GAIN: 777 ret = imx258_update_digital_gain(imx258, IMX258_REG_VALUE_16BIT, 778 ctrl->val); 779 break; 780 case V4L2_CID_TEST_PATTERN: 781 ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN, 782 IMX258_REG_VALUE_16BIT, 783 ctrl->val); 784 ret = imx258_write_reg(imx258, REG_MIRROR_FLIP_CONTROL, 785 IMX258_REG_VALUE_08BIT, 786 !ctrl->val ? REG_CONFIG_MIRROR_FLIP : 787 REG_CONFIG_FLIP_TEST_PATTERN); 788 break; 789 case V4L2_CID_WIDE_DYNAMIC_RANGE: 790 if (!ctrl->val) { 791 ret = imx258_write_reg(imx258, IMX258_REG_HDR, 792 IMX258_REG_VALUE_08BIT, 793 IMX258_HDR_RATIO_MIN); 794 } else { 795 ret = imx258_write_reg(imx258, IMX258_REG_HDR, 796 IMX258_REG_VALUE_08BIT, 797 IMX258_HDR_ON); 798 if (ret) 799 break; 800 ret = imx258_write_reg(imx258, IMX258_REG_HDR_RATIO, 801 IMX258_REG_VALUE_08BIT, 802 BIT(IMX258_HDR_RATIO_MAX)); 803 } 804 break; 805 default: 806 dev_info(&client->dev, 807 "ctrl(id:0x%x,val:0x%x) is not handled\n", 808 ctrl->id, ctrl->val); 809 ret = -EINVAL; 810 break; 811 } 812 813 pm_runtime_put(&client->dev); 814 815 return ret; 816 } 817 818 static const struct v4l2_ctrl_ops imx258_ctrl_ops = { 819 .s_ctrl = imx258_set_ctrl, 820 }; 821 822 static int imx258_enum_mbus_code(struct v4l2_subdev *sd, 823 struct v4l2_subdev_state *sd_state, 824 struct v4l2_subdev_mbus_code_enum *code) 825 { 826 /* Only one bayer order(GRBG) is supported */ 827 if (code->index > 0) 828 return -EINVAL; 829 830 code->code = MEDIA_BUS_FMT_SGRBG10_1X10; 831 832 return 0; 833 } 834 835 static int imx258_enum_frame_size(struct v4l2_subdev *sd, 836 struct v4l2_subdev_state *sd_state, 837 struct v4l2_subdev_frame_size_enum *fse) 838 { 839 if (fse->index >= ARRAY_SIZE(supported_modes)) 840 return -EINVAL; 841 842 if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10) 843 return -EINVAL; 844 845 fse->min_width = supported_modes[fse->index].width; 846 fse->max_width = fse->min_width; 847 fse->min_height = supported_modes[fse->index].height; 848 fse->max_height = fse->min_height; 849 850 return 0; 851 } 852 853 static void imx258_update_pad_format(const struct imx258_mode *mode, 854 struct v4l2_subdev_format *fmt) 855 { 856 fmt->format.width = mode->width; 857 fmt->format.height = mode->height; 858 fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10; 859 fmt->format.field = V4L2_FIELD_NONE; 860 } 861 862 static int __imx258_get_pad_format(struct imx258 *imx258, 863 struct v4l2_subdev_state *sd_state, 864 struct v4l2_subdev_format *fmt) 865 { 866 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) 867 fmt->format = *v4l2_subdev_get_try_format(&imx258->sd, 868 sd_state, 869 fmt->pad); 870 else 871 imx258_update_pad_format(imx258->cur_mode, fmt); 872 873 return 0; 874 } 875 876 static int imx258_get_pad_format(struct v4l2_subdev *sd, 877 struct v4l2_subdev_state *sd_state, 878 struct v4l2_subdev_format *fmt) 879 { 880 struct imx258 *imx258 = to_imx258(sd); 881 int ret; 882 883 mutex_lock(&imx258->mutex); 884 ret = __imx258_get_pad_format(imx258, sd_state, fmt); 885 mutex_unlock(&imx258->mutex); 886 887 return ret; 888 } 889 890 static int imx258_set_pad_format(struct v4l2_subdev *sd, 891 struct v4l2_subdev_state *sd_state, 892 struct v4l2_subdev_format *fmt) 893 { 894 struct imx258 *imx258 = to_imx258(sd); 895 const struct imx258_mode *mode; 896 struct v4l2_mbus_framefmt *framefmt; 897 s32 vblank_def; 898 s32 vblank_min; 899 s64 h_blank; 900 s64 pixel_rate; 901 s64 link_freq; 902 903 mutex_lock(&imx258->mutex); 904 905 /* Only one raw bayer(GBRG) order is supported */ 906 fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10; 907 908 mode = v4l2_find_nearest_size(supported_modes, 909 ARRAY_SIZE(supported_modes), width, height, 910 fmt->format.width, fmt->format.height); 911 imx258_update_pad_format(mode, fmt); 912 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 913 framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad); 914 *framefmt = fmt->format; 915 } else { 916 imx258->cur_mode = mode; 917 __v4l2_ctrl_s_ctrl(imx258->link_freq, mode->link_freq_index); 918 919 link_freq = link_freq_menu_items[mode->link_freq_index]; 920 pixel_rate = link_freq_to_pixel_rate(link_freq); 921 __v4l2_ctrl_s_ctrl_int64(imx258->pixel_rate, pixel_rate); 922 /* Update limits and set FPS to default */ 923 vblank_def = imx258->cur_mode->vts_def - 924 imx258->cur_mode->height; 925 vblank_min = imx258->cur_mode->vts_min - 926 imx258->cur_mode->height; 927 __v4l2_ctrl_modify_range( 928 imx258->vblank, vblank_min, 929 IMX258_VTS_MAX - imx258->cur_mode->height, 1, 930 vblank_def); 931 __v4l2_ctrl_s_ctrl(imx258->vblank, vblank_def); 932 h_blank = 933 link_freq_configs[mode->link_freq_index].pixels_per_line 934 - imx258->cur_mode->width; 935 __v4l2_ctrl_modify_range(imx258->hblank, h_blank, 936 h_blank, 1, h_blank); 937 } 938 939 mutex_unlock(&imx258->mutex); 940 941 return 0; 942 } 943 944 /* Start streaming */ 945 static int imx258_start_streaming(struct imx258 *imx258) 946 { 947 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); 948 const struct imx258_reg_list *reg_list; 949 int ret, link_freq_index; 950 951 /* Setup PLL */ 952 link_freq_index = imx258->cur_mode->link_freq_index; 953 reg_list = &link_freq_configs[link_freq_index].reg_list; 954 ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs); 955 if (ret) { 956 dev_err(&client->dev, "%s failed to set plls\n", __func__); 957 return ret; 958 } 959 960 /* Apply default values of current mode */ 961 reg_list = &imx258->cur_mode->reg_list; 962 ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs); 963 if (ret) { 964 dev_err(&client->dev, "%s failed to set mode\n", __func__); 965 return ret; 966 } 967 968 /* Set Orientation be 180 degree */ 969 ret = imx258_write_reg(imx258, REG_MIRROR_FLIP_CONTROL, 970 IMX258_REG_VALUE_08BIT, REG_CONFIG_MIRROR_FLIP); 971 if (ret) { 972 dev_err(&client->dev, "%s failed to set orientation\n", 973 __func__); 974 return ret; 975 } 976 977 /* Apply customized values from user */ 978 ret = __v4l2_ctrl_handler_setup(imx258->sd.ctrl_handler); 979 if (ret) 980 return ret; 981 982 /* set stream on register */ 983 return imx258_write_reg(imx258, IMX258_REG_MODE_SELECT, 984 IMX258_REG_VALUE_08BIT, 985 IMX258_MODE_STREAMING); 986 } 987 988 /* Stop streaming */ 989 static int imx258_stop_streaming(struct imx258 *imx258) 990 { 991 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); 992 int ret; 993 994 /* set stream off register */ 995 ret = imx258_write_reg(imx258, IMX258_REG_MODE_SELECT, 996 IMX258_REG_VALUE_08BIT, IMX258_MODE_STANDBY); 997 if (ret) 998 dev_err(&client->dev, "%s failed to set stream\n", __func__); 999 1000 /* 1001 * Return success even if it was an error, as there is nothing the 1002 * caller can do about it. 1003 */ 1004 return 0; 1005 } 1006 1007 static int imx258_power_on(struct device *dev) 1008 { 1009 struct v4l2_subdev *sd = dev_get_drvdata(dev); 1010 struct imx258 *imx258 = to_imx258(sd); 1011 int ret; 1012 1013 ret = clk_prepare_enable(imx258->clk); 1014 if (ret) 1015 dev_err(dev, "failed to enable clock\n"); 1016 1017 return ret; 1018 } 1019 1020 static int imx258_power_off(struct device *dev) 1021 { 1022 struct v4l2_subdev *sd = dev_get_drvdata(dev); 1023 struct imx258 *imx258 = to_imx258(sd); 1024 1025 clk_disable_unprepare(imx258->clk); 1026 1027 return 0; 1028 } 1029 1030 static int imx258_set_stream(struct v4l2_subdev *sd, int enable) 1031 { 1032 struct imx258 *imx258 = to_imx258(sd); 1033 struct i2c_client *client = v4l2_get_subdevdata(sd); 1034 int ret = 0; 1035 1036 mutex_lock(&imx258->mutex); 1037 if (imx258->streaming == enable) { 1038 mutex_unlock(&imx258->mutex); 1039 return 0; 1040 } 1041 1042 if (enable) { 1043 ret = pm_runtime_resume_and_get(&client->dev); 1044 if (ret < 0) 1045 goto err_unlock; 1046 1047 /* 1048 * Apply default & customized values 1049 * and then start streaming. 1050 */ 1051 ret = imx258_start_streaming(imx258); 1052 if (ret) 1053 goto err_rpm_put; 1054 } else { 1055 imx258_stop_streaming(imx258); 1056 pm_runtime_put(&client->dev); 1057 } 1058 1059 imx258->streaming = enable; 1060 mutex_unlock(&imx258->mutex); 1061 1062 return ret; 1063 1064 err_rpm_put: 1065 pm_runtime_put(&client->dev); 1066 err_unlock: 1067 mutex_unlock(&imx258->mutex); 1068 1069 return ret; 1070 } 1071 1072 static int __maybe_unused imx258_suspend(struct device *dev) 1073 { 1074 struct v4l2_subdev *sd = dev_get_drvdata(dev); 1075 struct imx258 *imx258 = to_imx258(sd); 1076 1077 if (imx258->streaming) 1078 imx258_stop_streaming(imx258); 1079 1080 return 0; 1081 } 1082 1083 static int __maybe_unused imx258_resume(struct device *dev) 1084 { 1085 struct v4l2_subdev *sd = dev_get_drvdata(dev); 1086 struct imx258 *imx258 = to_imx258(sd); 1087 int ret; 1088 1089 if (imx258->streaming) { 1090 ret = imx258_start_streaming(imx258); 1091 if (ret) 1092 goto error; 1093 } 1094 1095 return 0; 1096 1097 error: 1098 imx258_stop_streaming(imx258); 1099 imx258->streaming = 0; 1100 return ret; 1101 } 1102 1103 /* Verify chip ID */ 1104 static int imx258_identify_module(struct imx258 *imx258) 1105 { 1106 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); 1107 int ret; 1108 u32 val; 1109 1110 ret = imx258_read_reg(imx258, IMX258_REG_CHIP_ID, 1111 IMX258_REG_VALUE_16BIT, &val); 1112 if (ret) { 1113 dev_err(&client->dev, "failed to read chip id %x\n", 1114 IMX258_CHIP_ID); 1115 return ret; 1116 } 1117 1118 if (val != IMX258_CHIP_ID) { 1119 dev_err(&client->dev, "chip id mismatch: %x!=%x\n", 1120 IMX258_CHIP_ID, val); 1121 return -EIO; 1122 } 1123 1124 return 0; 1125 } 1126 1127 static const struct v4l2_subdev_video_ops imx258_video_ops = { 1128 .s_stream = imx258_set_stream, 1129 }; 1130 1131 static const struct v4l2_subdev_pad_ops imx258_pad_ops = { 1132 .enum_mbus_code = imx258_enum_mbus_code, 1133 .get_fmt = imx258_get_pad_format, 1134 .set_fmt = imx258_set_pad_format, 1135 .enum_frame_size = imx258_enum_frame_size, 1136 }; 1137 1138 static const struct v4l2_subdev_ops imx258_subdev_ops = { 1139 .video = &imx258_video_ops, 1140 .pad = &imx258_pad_ops, 1141 }; 1142 1143 static const struct v4l2_subdev_internal_ops imx258_internal_ops = { 1144 .open = imx258_open, 1145 }; 1146 1147 /* Initialize control handlers */ 1148 static int imx258_init_controls(struct imx258 *imx258) 1149 { 1150 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); 1151 struct v4l2_ctrl_handler *ctrl_hdlr; 1152 s64 vblank_def; 1153 s64 vblank_min; 1154 s64 pixel_rate_min; 1155 s64 pixel_rate_max; 1156 int ret; 1157 1158 ctrl_hdlr = &imx258->ctrl_handler; 1159 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8); 1160 if (ret) 1161 return ret; 1162 1163 mutex_init(&imx258->mutex); 1164 ctrl_hdlr->lock = &imx258->mutex; 1165 imx258->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, 1166 &imx258_ctrl_ops, 1167 V4L2_CID_LINK_FREQ, 1168 ARRAY_SIZE(link_freq_menu_items) - 1, 1169 0, 1170 link_freq_menu_items); 1171 1172 if (imx258->link_freq) 1173 imx258->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1174 1175 pixel_rate_max = link_freq_to_pixel_rate(link_freq_menu_items[0]); 1176 pixel_rate_min = link_freq_to_pixel_rate(link_freq_menu_items[1]); 1177 /* By default, PIXEL_RATE is read only */ 1178 imx258->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, 1179 V4L2_CID_PIXEL_RATE, 1180 pixel_rate_min, pixel_rate_max, 1181 1, pixel_rate_max); 1182 1183 1184 vblank_def = imx258->cur_mode->vts_def - imx258->cur_mode->height; 1185 vblank_min = imx258->cur_mode->vts_min - imx258->cur_mode->height; 1186 imx258->vblank = v4l2_ctrl_new_std( 1187 ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_VBLANK, 1188 vblank_min, 1189 IMX258_VTS_MAX - imx258->cur_mode->height, 1, 1190 vblank_def); 1191 1192 if (imx258->vblank) 1193 imx258->vblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1194 1195 imx258->hblank = v4l2_ctrl_new_std( 1196 ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_HBLANK, 1197 IMX258_PPL_DEFAULT - imx258->cur_mode->width, 1198 IMX258_PPL_DEFAULT - imx258->cur_mode->width, 1199 1, 1200 IMX258_PPL_DEFAULT - imx258->cur_mode->width); 1201 1202 if (imx258->hblank) 1203 imx258->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1204 1205 imx258->exposure = v4l2_ctrl_new_std( 1206 ctrl_hdlr, &imx258_ctrl_ops, 1207 V4L2_CID_EXPOSURE, IMX258_EXPOSURE_MIN, 1208 IMX258_EXPOSURE_MAX, IMX258_EXPOSURE_STEP, 1209 IMX258_EXPOSURE_DEFAULT); 1210 1211 v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, 1212 IMX258_ANA_GAIN_MIN, IMX258_ANA_GAIN_MAX, 1213 IMX258_ANA_GAIN_STEP, IMX258_ANA_GAIN_DEFAULT); 1214 1215 v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_DIGITAL_GAIN, 1216 IMX258_DGTL_GAIN_MIN, IMX258_DGTL_GAIN_MAX, 1217 IMX258_DGTL_GAIN_STEP, 1218 IMX258_DGTL_GAIN_DEFAULT); 1219 1220 v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_WIDE_DYNAMIC_RANGE, 1221 0, 1, 1, IMX258_HDR_RATIO_DEFAULT); 1222 1223 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx258_ctrl_ops, 1224 V4L2_CID_TEST_PATTERN, 1225 ARRAY_SIZE(imx258_test_pattern_menu) - 1, 1226 0, 0, imx258_test_pattern_menu); 1227 1228 if (ctrl_hdlr->error) { 1229 ret = ctrl_hdlr->error; 1230 dev_err(&client->dev, "%s control init failed (%d)\n", 1231 __func__, ret); 1232 goto error; 1233 } 1234 1235 imx258->sd.ctrl_handler = ctrl_hdlr; 1236 1237 return 0; 1238 1239 error: 1240 v4l2_ctrl_handler_free(ctrl_hdlr); 1241 mutex_destroy(&imx258->mutex); 1242 1243 return ret; 1244 } 1245 1246 static void imx258_free_controls(struct imx258 *imx258) 1247 { 1248 v4l2_ctrl_handler_free(imx258->sd.ctrl_handler); 1249 mutex_destroy(&imx258->mutex); 1250 } 1251 1252 static int imx258_probe(struct i2c_client *client) 1253 { 1254 struct imx258 *imx258; 1255 int ret; 1256 u32 val = 0; 1257 1258 imx258 = devm_kzalloc(&client->dev, sizeof(*imx258), GFP_KERNEL); 1259 if (!imx258) 1260 return -ENOMEM; 1261 1262 imx258->clk = devm_clk_get_optional(&client->dev, NULL); 1263 if (IS_ERR(imx258->clk)) 1264 return dev_err_probe(&client->dev, PTR_ERR(imx258->clk), 1265 "error getting clock\n"); 1266 if (!imx258->clk) { 1267 dev_dbg(&client->dev, 1268 "no clock provided, using clock-frequency property\n"); 1269 1270 device_property_read_u32(&client->dev, "clock-frequency", &val); 1271 } else { 1272 val = clk_get_rate(imx258->clk); 1273 } 1274 if (val != IMX258_INPUT_CLOCK_FREQ) { 1275 dev_err(&client->dev, "input clock frequency not supported\n"); 1276 return -EINVAL; 1277 } 1278 1279 /* 1280 * Check that the device is mounted upside down. The driver only 1281 * supports a single pixel order right now. 1282 */ 1283 ret = device_property_read_u32(&client->dev, "rotation", &val); 1284 if (ret || val != 180) 1285 return -EINVAL; 1286 1287 /* Initialize subdev */ 1288 v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops); 1289 1290 /* Will be powered off via pm_runtime_idle */ 1291 ret = imx258_power_on(&client->dev); 1292 if (ret) 1293 return ret; 1294 1295 /* Check module identity */ 1296 ret = imx258_identify_module(imx258); 1297 if (ret) 1298 goto error_identify; 1299 1300 /* Set default mode to max resolution */ 1301 imx258->cur_mode = &supported_modes[0]; 1302 1303 ret = imx258_init_controls(imx258); 1304 if (ret) 1305 goto error_identify; 1306 1307 /* Initialize subdev */ 1308 imx258->sd.internal_ops = &imx258_internal_ops; 1309 imx258->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1310 imx258->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 1311 1312 /* Initialize source pad */ 1313 imx258->pad.flags = MEDIA_PAD_FL_SOURCE; 1314 1315 ret = media_entity_pads_init(&imx258->sd.entity, 1, &imx258->pad); 1316 if (ret) 1317 goto error_handler_free; 1318 1319 ret = v4l2_async_register_subdev_sensor(&imx258->sd); 1320 if (ret < 0) 1321 goto error_media_entity; 1322 1323 pm_runtime_set_active(&client->dev); 1324 pm_runtime_enable(&client->dev); 1325 pm_runtime_idle(&client->dev); 1326 1327 return 0; 1328 1329 error_media_entity: 1330 media_entity_cleanup(&imx258->sd.entity); 1331 1332 error_handler_free: 1333 imx258_free_controls(imx258); 1334 1335 error_identify: 1336 imx258_power_off(&client->dev); 1337 1338 return ret; 1339 } 1340 1341 static void imx258_remove(struct i2c_client *client) 1342 { 1343 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1344 struct imx258 *imx258 = to_imx258(sd); 1345 1346 v4l2_async_unregister_subdev(sd); 1347 media_entity_cleanup(&sd->entity); 1348 imx258_free_controls(imx258); 1349 1350 pm_runtime_disable(&client->dev); 1351 if (!pm_runtime_status_suspended(&client->dev)) 1352 imx258_power_off(&client->dev); 1353 pm_runtime_set_suspended(&client->dev); 1354 } 1355 1356 static const struct dev_pm_ops imx258_pm_ops = { 1357 SET_SYSTEM_SLEEP_PM_OPS(imx258_suspend, imx258_resume) 1358 SET_RUNTIME_PM_OPS(imx258_power_off, imx258_power_on, NULL) 1359 }; 1360 1361 #ifdef CONFIG_ACPI 1362 static const struct acpi_device_id imx258_acpi_ids[] = { 1363 { "SONY258A" }, 1364 { /* sentinel */ } 1365 }; 1366 1367 MODULE_DEVICE_TABLE(acpi, imx258_acpi_ids); 1368 #endif 1369 1370 static const struct of_device_id imx258_dt_ids[] = { 1371 { .compatible = "sony,imx258" }, 1372 { /* sentinel */ } 1373 }; 1374 MODULE_DEVICE_TABLE(of, imx258_dt_ids); 1375 1376 static struct i2c_driver imx258_i2c_driver = { 1377 .driver = { 1378 .name = "imx258", 1379 .pm = &imx258_pm_ops, 1380 .acpi_match_table = ACPI_PTR(imx258_acpi_ids), 1381 .of_match_table = imx258_dt_ids, 1382 }, 1383 .probe_new = imx258_probe, 1384 .remove = imx258_remove, 1385 }; 1386 1387 module_i2c_driver(imx258_i2c_driver); 1388 1389 MODULE_AUTHOR("Yeh, Andy <andy.yeh@intel.com>"); 1390 MODULE_AUTHOR("Chiang, Alan"); 1391 MODULE_AUTHOR("Chen, Jason"); 1392 MODULE_DESCRIPTION("Sony IMX258 sensor driver"); 1393 MODULE_LICENSE("GPL v2"); 1394