1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * A V4L2 driver for OmniVision OV5647 cameras. 4 * 5 * Based on Samsung S5K6AAFX SXGA 1/6" 1.3M CMOS Image Sensor driver 6 * Copyright (C) 2011 Sylwester Nawrocki <s.nawrocki@samsung.com> 7 * 8 * Based on Omnivision OV7670 Camera Driver 9 * Copyright (C) 2006-7 Jonathan Corbet <corbet@lwn.net> 10 * 11 * Copyright (C) 2016, Synopsys, Inc. 12 */ 13 14 #include <linux/clk.h> 15 #include <linux/delay.h> 16 #include <linux/gpio/consumer.h> 17 #include <linux/i2c.h> 18 #include <linux/init.h> 19 #include <linux/io.h> 20 #include <linux/module.h> 21 #include <linux/of_graph.h> 22 #include <linux/pm_runtime.h> 23 #include <linux/slab.h> 24 #include <linux/videodev2.h> 25 #include <media/v4l2-ctrls.h> 26 #include <media/v4l2-device.h> 27 #include <media/v4l2-event.h> 28 #include <media/v4l2-fwnode.h> 29 #include <media/v4l2-image-sizes.h> 30 #include <media/v4l2-mediabus.h> 31 32 /* 33 * From the datasheet, "20ms after PWDN goes low or 20ms after RESETB goes 34 * high if reset is inserted after PWDN goes high, host can access sensor's 35 * SCCB to initialize sensor." 36 */ 37 #define PWDN_ACTIVE_DELAY_MS 20 38 39 #define MIPI_CTRL00_CLOCK_LANE_GATE BIT(5) 40 #define MIPI_CTRL00_LINE_SYNC_ENABLE BIT(4) 41 #define MIPI_CTRL00_BUS_IDLE BIT(2) 42 #define MIPI_CTRL00_CLOCK_LANE_DISABLE BIT(0) 43 44 #define OV5647_SW_STANDBY 0x0100 45 #define OV5647_SW_RESET 0x0103 46 #define OV5647_REG_CHIPID_H 0x300a 47 #define OV5647_REG_CHIPID_L 0x300b 48 #define OV5640_REG_PAD_OUT 0x300d 49 #define OV5647_REG_EXP_HI 0x3500 50 #define OV5647_REG_EXP_MID 0x3501 51 #define OV5647_REG_EXP_LO 0x3502 52 #define OV5647_REG_AEC_AGC 0x3503 53 #define OV5647_REG_GAIN_HI 0x350a 54 #define OV5647_REG_GAIN_LO 0x350b 55 #define OV5647_REG_VTS_HI 0x380e 56 #define OV5647_REG_VTS_LO 0x380f 57 #define OV5647_REG_FRAME_OFF_NUMBER 0x4202 58 #define OV5647_REG_MIPI_CTRL00 0x4800 59 #define OV5647_REG_MIPI_CTRL14 0x4814 60 #define OV5647_REG_AWB 0x5001 61 #define OV5647_REG_ISPCTRL3D 0x503d 62 63 #define REG_TERM 0xfffe 64 #define VAL_TERM 0xfe 65 #define REG_DLY 0xffff 66 67 /* OV5647 native and active pixel array size */ 68 #define OV5647_NATIVE_WIDTH 2624U 69 #define OV5647_NATIVE_HEIGHT 1956U 70 71 #define OV5647_PIXEL_ARRAY_LEFT 16U 72 #define OV5647_PIXEL_ARRAY_TOP 16U 73 #define OV5647_PIXEL_ARRAY_WIDTH 2592U 74 #define OV5647_PIXEL_ARRAY_HEIGHT 1944U 75 76 #define OV5647_VBLANK_MIN 4 77 #define OV5647_VTS_MAX 32767 78 79 #define OV5647_EXPOSURE_MIN 4 80 #define OV5647_EXPOSURE_STEP 1 81 #define OV5647_EXPOSURE_DEFAULT 1000 82 #define OV5647_EXPOSURE_MAX 65535 83 84 struct regval_list { 85 u16 addr; 86 u8 data; 87 }; 88 89 struct ov5647_mode { 90 struct v4l2_mbus_framefmt format; 91 struct v4l2_rect crop; 92 u64 pixel_rate; 93 int hts; 94 int vts; 95 const struct regval_list *reg_list; 96 unsigned int num_regs; 97 }; 98 99 struct ov5647 { 100 struct v4l2_subdev sd; 101 struct media_pad pad; 102 struct mutex lock; 103 struct clk *xclk; 104 struct gpio_desc *pwdn; 105 bool clock_ncont; 106 struct v4l2_ctrl_handler ctrls; 107 const struct ov5647_mode *mode; 108 struct v4l2_ctrl *pixel_rate; 109 struct v4l2_ctrl *hblank; 110 struct v4l2_ctrl *vblank; 111 struct v4l2_ctrl *exposure; 112 }; 113 114 static inline struct ov5647 *to_sensor(struct v4l2_subdev *sd) 115 { 116 return container_of(sd, struct ov5647, sd); 117 } 118 119 static const char * const ov5647_test_pattern_menu[] = { 120 "Disabled", 121 "Color Bars", 122 "Color Squares", 123 "Random Data", 124 }; 125 126 static const u8 ov5647_test_pattern_val[] = { 127 0x00, /* Disabled */ 128 0x80, /* Color Bars */ 129 0x82, /* Color Squares */ 130 0x81, /* Random Data */ 131 }; 132 133 static const struct regval_list sensor_oe_disable_regs[] = { 134 {0x3000, 0x00}, 135 {0x3001, 0x00}, 136 {0x3002, 0x00}, 137 }; 138 139 static const struct regval_list sensor_oe_enable_regs[] = { 140 {0x3000, 0x0f}, 141 {0x3001, 0xff}, 142 {0x3002, 0xe4}, 143 }; 144 145 static struct regval_list ov5647_2592x1944_10bpp[] = { 146 {0x0100, 0x00}, 147 {0x0103, 0x01}, 148 {0x3034, 0x1a}, 149 {0x3035, 0x21}, 150 {0x3036, 0x69}, 151 {0x303c, 0x11}, 152 {0x3106, 0xf5}, 153 {0x3821, 0x06}, 154 {0x3820, 0x00}, 155 {0x3827, 0xec}, 156 {0x370c, 0x03}, 157 {0x3612, 0x5b}, 158 {0x3618, 0x04}, 159 {0x5000, 0x06}, 160 {0x5002, 0x41}, 161 {0x5003, 0x08}, 162 {0x5a00, 0x08}, 163 {0x3000, 0x00}, 164 {0x3001, 0x00}, 165 {0x3002, 0x00}, 166 {0x3016, 0x08}, 167 {0x3017, 0xe0}, 168 {0x3018, 0x44}, 169 {0x301c, 0xf8}, 170 {0x301d, 0xf0}, 171 {0x3a18, 0x00}, 172 {0x3a19, 0xf8}, 173 {0x3c01, 0x80}, 174 {0x3b07, 0x0c}, 175 {0x380c, 0x0b}, 176 {0x380d, 0x1c}, 177 {0x3814, 0x11}, 178 {0x3815, 0x11}, 179 {0x3708, 0x64}, 180 {0x3709, 0x12}, 181 {0x3808, 0x0a}, 182 {0x3809, 0x20}, 183 {0x380a, 0x07}, 184 {0x380b, 0x98}, 185 {0x3800, 0x00}, 186 {0x3801, 0x00}, 187 {0x3802, 0x00}, 188 {0x3803, 0x00}, 189 {0x3804, 0x0a}, 190 {0x3805, 0x3f}, 191 {0x3806, 0x07}, 192 {0x3807, 0xa3}, 193 {0x3811, 0x10}, 194 {0x3813, 0x06}, 195 {0x3630, 0x2e}, 196 {0x3632, 0xe2}, 197 {0x3633, 0x23}, 198 {0x3634, 0x44}, 199 {0x3636, 0x06}, 200 {0x3620, 0x64}, 201 {0x3621, 0xe0}, 202 {0x3600, 0x37}, 203 {0x3704, 0xa0}, 204 {0x3703, 0x5a}, 205 {0x3715, 0x78}, 206 {0x3717, 0x01}, 207 {0x3731, 0x02}, 208 {0x370b, 0x60}, 209 {0x3705, 0x1a}, 210 {0x3f05, 0x02}, 211 {0x3f06, 0x10}, 212 {0x3f01, 0x0a}, 213 {0x3a08, 0x01}, 214 {0x3a09, 0x28}, 215 {0x3a0a, 0x00}, 216 {0x3a0b, 0xf6}, 217 {0x3a0d, 0x08}, 218 {0x3a0e, 0x06}, 219 {0x3a0f, 0x58}, 220 {0x3a10, 0x50}, 221 {0x3a1b, 0x58}, 222 {0x3a1e, 0x50}, 223 {0x3a11, 0x60}, 224 {0x3a1f, 0x28}, 225 {0x4001, 0x02}, 226 {0x4004, 0x04}, 227 {0x4000, 0x09}, 228 {0x4837, 0x19}, 229 {0x4800, 0x24}, 230 {0x3503, 0x03}, 231 {0x0100, 0x01}, 232 }; 233 234 static struct regval_list ov5647_1080p30_10bpp[] = { 235 {0x0100, 0x00}, 236 {0x0103, 0x01}, 237 {0x3034, 0x1a}, 238 {0x3035, 0x21}, 239 {0x3036, 0x62}, 240 {0x303c, 0x11}, 241 {0x3106, 0xf5}, 242 {0x3821, 0x06}, 243 {0x3820, 0x00}, 244 {0x3827, 0xec}, 245 {0x370c, 0x03}, 246 {0x3612, 0x5b}, 247 {0x3618, 0x04}, 248 {0x5000, 0x06}, 249 {0x5002, 0x41}, 250 {0x5003, 0x08}, 251 {0x5a00, 0x08}, 252 {0x3000, 0x00}, 253 {0x3001, 0x00}, 254 {0x3002, 0x00}, 255 {0x3016, 0x08}, 256 {0x3017, 0xe0}, 257 {0x3018, 0x44}, 258 {0x301c, 0xf8}, 259 {0x301d, 0xf0}, 260 {0x3a18, 0x00}, 261 {0x3a19, 0xf8}, 262 {0x3c01, 0x80}, 263 {0x3b07, 0x0c}, 264 {0x380c, 0x09}, 265 {0x380d, 0x70}, 266 {0x3814, 0x11}, 267 {0x3815, 0x11}, 268 {0x3708, 0x64}, 269 {0x3709, 0x12}, 270 {0x3808, 0x07}, 271 {0x3809, 0x80}, 272 {0x380a, 0x04}, 273 {0x380b, 0x38}, 274 {0x3800, 0x01}, 275 {0x3801, 0x5c}, 276 {0x3802, 0x01}, 277 {0x3803, 0xb2}, 278 {0x3804, 0x08}, 279 {0x3805, 0xe3}, 280 {0x3806, 0x05}, 281 {0x3807, 0xf1}, 282 {0x3811, 0x04}, 283 {0x3813, 0x02}, 284 {0x3630, 0x2e}, 285 {0x3632, 0xe2}, 286 {0x3633, 0x23}, 287 {0x3634, 0x44}, 288 {0x3636, 0x06}, 289 {0x3620, 0x64}, 290 {0x3621, 0xe0}, 291 {0x3600, 0x37}, 292 {0x3704, 0xa0}, 293 {0x3703, 0x5a}, 294 {0x3715, 0x78}, 295 {0x3717, 0x01}, 296 {0x3731, 0x02}, 297 {0x370b, 0x60}, 298 {0x3705, 0x1a}, 299 {0x3f05, 0x02}, 300 {0x3f06, 0x10}, 301 {0x3f01, 0x0a}, 302 {0x3a08, 0x01}, 303 {0x3a09, 0x4b}, 304 {0x3a0a, 0x01}, 305 {0x3a0b, 0x13}, 306 {0x3a0d, 0x04}, 307 {0x3a0e, 0x03}, 308 {0x3a0f, 0x58}, 309 {0x3a10, 0x50}, 310 {0x3a1b, 0x58}, 311 {0x3a1e, 0x50}, 312 {0x3a11, 0x60}, 313 {0x3a1f, 0x28}, 314 {0x4001, 0x02}, 315 {0x4004, 0x04}, 316 {0x4000, 0x09}, 317 {0x4837, 0x19}, 318 {0x4800, 0x34}, 319 {0x3503, 0x03}, 320 {0x0100, 0x01}, 321 }; 322 323 static struct regval_list ov5647_2x2binned_10bpp[] = { 324 {0x0100, 0x00}, 325 {0x0103, 0x01}, 326 {0x3034, 0x1a}, 327 {0x3035, 0x21}, 328 {0x3036, 0x62}, 329 {0x303c, 0x11}, 330 {0x3106, 0xf5}, 331 {0x3827, 0xec}, 332 {0x370c, 0x03}, 333 {0x3612, 0x59}, 334 {0x3618, 0x00}, 335 {0x5000, 0x06}, 336 {0x5002, 0x41}, 337 {0x5003, 0x08}, 338 {0x5a00, 0x08}, 339 {0x3000, 0x00}, 340 {0x3001, 0x00}, 341 {0x3002, 0x00}, 342 {0x3016, 0x08}, 343 {0x3017, 0xe0}, 344 {0x3018, 0x44}, 345 {0x301c, 0xf8}, 346 {0x301d, 0xf0}, 347 {0x3a18, 0x00}, 348 {0x3a19, 0xf8}, 349 {0x3c01, 0x80}, 350 {0x3b07, 0x0c}, 351 {0x3800, 0x00}, 352 {0x3801, 0x00}, 353 {0x3802, 0x00}, 354 {0x3803, 0x00}, 355 {0x3804, 0x0a}, 356 {0x3805, 0x3f}, 357 {0x3806, 0x07}, 358 {0x3807, 0xa3}, 359 {0x3808, 0x05}, 360 {0x3809, 0x10}, 361 {0x380a, 0x03}, 362 {0x380b, 0xcc}, 363 {0x380c, 0x07}, 364 {0x380d, 0x68}, 365 {0x3811, 0x0c}, 366 {0x3813, 0x06}, 367 {0x3814, 0x31}, 368 {0x3815, 0x31}, 369 {0x3630, 0x2e}, 370 {0x3632, 0xe2}, 371 {0x3633, 0x23}, 372 {0x3634, 0x44}, 373 {0x3636, 0x06}, 374 {0x3620, 0x64}, 375 {0x3621, 0xe0}, 376 {0x3600, 0x37}, 377 {0x3704, 0xa0}, 378 {0x3703, 0x5a}, 379 {0x3715, 0x78}, 380 {0x3717, 0x01}, 381 {0x3731, 0x02}, 382 {0x370b, 0x60}, 383 {0x3705, 0x1a}, 384 {0x3f05, 0x02}, 385 {0x3f06, 0x10}, 386 {0x3f01, 0x0a}, 387 {0x3a08, 0x01}, 388 {0x3a09, 0x28}, 389 {0x3a0a, 0x00}, 390 {0x3a0b, 0xf6}, 391 {0x3a0d, 0x08}, 392 {0x3a0e, 0x06}, 393 {0x3a0f, 0x58}, 394 {0x3a10, 0x50}, 395 {0x3a1b, 0x58}, 396 {0x3a1e, 0x50}, 397 {0x3a11, 0x60}, 398 {0x3a1f, 0x28}, 399 {0x4001, 0x02}, 400 {0x4004, 0x04}, 401 {0x4000, 0x09}, 402 {0x4837, 0x16}, 403 {0x4800, 0x24}, 404 {0x3503, 0x03}, 405 {0x3820, 0x41}, 406 {0x3821, 0x07}, 407 {0x350a, 0x00}, 408 {0x350b, 0x10}, 409 {0x3500, 0x00}, 410 {0x3501, 0x1a}, 411 {0x3502, 0xf0}, 412 {0x3212, 0xa0}, 413 {0x0100, 0x01}, 414 }; 415 416 static struct regval_list ov5647_640x480_10bpp[] = { 417 {0x0100, 0x00}, 418 {0x0103, 0x01}, 419 {0x3035, 0x11}, 420 {0x3036, 0x46}, 421 {0x303c, 0x11}, 422 {0x3821, 0x07}, 423 {0x3820, 0x41}, 424 {0x370c, 0x03}, 425 {0x3612, 0x59}, 426 {0x3618, 0x00}, 427 {0x5000, 0x06}, 428 {0x5003, 0x08}, 429 {0x5a00, 0x08}, 430 {0x3000, 0xff}, 431 {0x3001, 0xff}, 432 {0x3002, 0xff}, 433 {0x301d, 0xf0}, 434 {0x3a18, 0x00}, 435 {0x3a19, 0xf8}, 436 {0x3c01, 0x80}, 437 {0x3b07, 0x0c}, 438 {0x380c, 0x07}, 439 {0x380d, 0x3c}, 440 {0x3814, 0x35}, 441 {0x3815, 0x35}, 442 {0x3708, 0x64}, 443 {0x3709, 0x52}, 444 {0x3808, 0x02}, 445 {0x3809, 0x80}, 446 {0x380a, 0x01}, 447 {0x380b, 0xe0}, 448 {0x3800, 0x00}, 449 {0x3801, 0x10}, 450 {0x3802, 0x00}, 451 {0x3803, 0x00}, 452 {0x3804, 0x0a}, 453 {0x3805, 0x2f}, 454 {0x3806, 0x07}, 455 {0x3807, 0x9f}, 456 {0x3630, 0x2e}, 457 {0x3632, 0xe2}, 458 {0x3633, 0x23}, 459 {0x3634, 0x44}, 460 {0x3620, 0x64}, 461 {0x3621, 0xe0}, 462 {0x3600, 0x37}, 463 {0x3704, 0xa0}, 464 {0x3703, 0x5a}, 465 {0x3715, 0x78}, 466 {0x3717, 0x01}, 467 {0x3731, 0x02}, 468 {0x370b, 0x60}, 469 {0x3705, 0x1a}, 470 {0x3f05, 0x02}, 471 {0x3f06, 0x10}, 472 {0x3f01, 0x0a}, 473 {0x3a08, 0x01}, 474 {0x3a09, 0x2e}, 475 {0x3a0a, 0x00}, 476 {0x3a0b, 0xfb}, 477 {0x3a0d, 0x02}, 478 {0x3a0e, 0x01}, 479 {0x3a0f, 0x58}, 480 {0x3a10, 0x50}, 481 {0x3a1b, 0x58}, 482 {0x3a1e, 0x50}, 483 {0x3a11, 0x60}, 484 {0x3a1f, 0x28}, 485 {0x4001, 0x02}, 486 {0x4004, 0x02}, 487 {0x4000, 0x09}, 488 {0x3000, 0x00}, 489 {0x3001, 0x00}, 490 {0x3002, 0x00}, 491 {0x3017, 0xe0}, 492 {0x301c, 0xfc}, 493 {0x3636, 0x06}, 494 {0x3016, 0x08}, 495 {0x3827, 0xec}, 496 {0x3018, 0x44}, 497 {0x3035, 0x21}, 498 {0x3106, 0xf5}, 499 {0x3034, 0x1a}, 500 {0x301c, 0xf8}, 501 {0x4800, 0x34}, 502 {0x3503, 0x03}, 503 {0x0100, 0x01}, 504 }; 505 506 static const struct ov5647_mode ov5647_modes[] = { 507 /* 2592x1944 full resolution full FOV 10-bit mode. */ 508 { 509 .format = { 510 .code = MEDIA_BUS_FMT_SBGGR10_1X10, 511 .colorspace = V4L2_COLORSPACE_SRGB, 512 .field = V4L2_FIELD_NONE, 513 .width = 2592, 514 .height = 1944 515 }, 516 .crop = { 517 .left = OV5647_PIXEL_ARRAY_LEFT, 518 .top = OV5647_PIXEL_ARRAY_TOP, 519 .width = 2592, 520 .height = 1944 521 }, 522 .pixel_rate = 87500000, 523 .hts = 2844, 524 .vts = 0x7b0, 525 .reg_list = ov5647_2592x1944_10bpp, 526 .num_regs = ARRAY_SIZE(ov5647_2592x1944_10bpp) 527 }, 528 /* 1080p30 10-bit mode. Full resolution centre-cropped down to 1080p. */ 529 { 530 .format = { 531 .code = MEDIA_BUS_FMT_SBGGR10_1X10, 532 .colorspace = V4L2_COLORSPACE_SRGB, 533 .field = V4L2_FIELD_NONE, 534 .width = 1920, 535 .height = 1080 536 }, 537 .crop = { 538 .left = 348 + OV5647_PIXEL_ARRAY_LEFT, 539 .top = 434 + OV5647_PIXEL_ARRAY_TOP, 540 .width = 1928, 541 .height = 1080, 542 }, 543 .pixel_rate = 81666700, 544 .hts = 2416, 545 .vts = 0x450, 546 .reg_list = ov5647_1080p30_10bpp, 547 .num_regs = ARRAY_SIZE(ov5647_1080p30_10bpp) 548 }, 549 /* 2x2 binned full FOV 10-bit mode. */ 550 { 551 .format = { 552 .code = MEDIA_BUS_FMT_SBGGR10_1X10, 553 .colorspace = V4L2_COLORSPACE_SRGB, 554 .field = V4L2_FIELD_NONE, 555 .width = 1296, 556 .height = 972 557 }, 558 .crop = { 559 .left = OV5647_PIXEL_ARRAY_LEFT, 560 .top = OV5647_PIXEL_ARRAY_TOP, 561 .width = 2592, 562 .height = 1944, 563 }, 564 .pixel_rate = 81666700, 565 .hts = 1896, 566 .vts = 0x59b, 567 .reg_list = ov5647_2x2binned_10bpp, 568 .num_regs = ARRAY_SIZE(ov5647_2x2binned_10bpp) 569 }, 570 /* 10-bit VGA full FOV 60fps. 2x2 binned and subsampled down to VGA. */ 571 { 572 .format = { 573 .code = MEDIA_BUS_FMT_SBGGR10_1X10, 574 .colorspace = V4L2_COLORSPACE_SRGB, 575 .field = V4L2_FIELD_NONE, 576 .width = 640, 577 .height = 480 578 }, 579 .crop = { 580 .left = 16 + OV5647_PIXEL_ARRAY_LEFT, 581 .top = OV5647_PIXEL_ARRAY_TOP, 582 .width = 2560, 583 .height = 1920, 584 }, 585 .pixel_rate = 55000000, 586 .hts = 1852, 587 .vts = 0x1f8, 588 .reg_list = ov5647_640x480_10bpp, 589 .num_regs = ARRAY_SIZE(ov5647_640x480_10bpp) 590 }, 591 }; 592 593 /* Default sensor mode is 2x2 binned 640x480 SBGGR10_1X10. */ 594 #define OV5647_DEFAULT_MODE (&ov5647_modes[3]) 595 #define OV5647_DEFAULT_FORMAT (ov5647_modes[3].format) 596 597 static int ov5647_write16(struct v4l2_subdev *sd, u16 reg, u16 val) 598 { 599 unsigned char data[4] = { reg >> 8, reg & 0xff, val >> 8, val & 0xff}; 600 struct i2c_client *client = v4l2_get_subdevdata(sd); 601 int ret; 602 603 ret = i2c_master_send(client, data, 4); 604 if (ret < 0) { 605 dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n", 606 __func__, reg); 607 return ret; 608 } 609 610 return 0; 611 } 612 613 static int ov5647_write(struct v4l2_subdev *sd, u16 reg, u8 val) 614 { 615 unsigned char data[3] = { reg >> 8, reg & 0xff, val}; 616 struct i2c_client *client = v4l2_get_subdevdata(sd); 617 int ret; 618 619 ret = i2c_master_send(client, data, 3); 620 if (ret < 0) { 621 dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n", 622 __func__, reg); 623 return ret; 624 } 625 626 return 0; 627 } 628 629 static int ov5647_read(struct v4l2_subdev *sd, u16 reg, u8 *val) 630 { 631 struct i2c_client *client = v4l2_get_subdevdata(sd); 632 u8 buf[2] = { reg >> 8, reg & 0xff }; 633 struct i2c_msg msg[2]; 634 int ret; 635 636 msg[0].addr = client->addr; 637 msg[0].flags = client->flags; 638 msg[0].buf = buf; 639 msg[0].len = sizeof(buf); 640 641 msg[1].addr = client->addr; 642 msg[1].flags = client->flags | I2C_M_RD; 643 msg[1].buf = buf; 644 msg[1].len = 1; 645 646 ret = i2c_transfer(client->adapter, msg, 2); 647 if (ret != 2) { 648 dev_err(&client->dev, "%s: i2c read error, reg: %x = %d\n", 649 __func__, reg, ret); 650 return ret >= 0 ? -EINVAL : ret; 651 } 652 653 *val = buf[0]; 654 655 return 0; 656 } 657 658 static int ov5647_write_array(struct v4l2_subdev *sd, 659 const struct regval_list *regs, int array_size) 660 { 661 int i, ret; 662 663 for (i = 0; i < array_size; i++) { 664 ret = ov5647_write(sd, regs[i].addr, regs[i].data); 665 if (ret < 0) 666 return ret; 667 } 668 669 return 0; 670 } 671 672 static int ov5647_set_virtual_channel(struct v4l2_subdev *sd, int channel) 673 { 674 u8 channel_id; 675 int ret; 676 677 ret = ov5647_read(sd, OV5647_REG_MIPI_CTRL14, &channel_id); 678 if (ret < 0) 679 return ret; 680 681 channel_id &= ~(3 << 6); 682 683 return ov5647_write(sd, OV5647_REG_MIPI_CTRL14, 684 channel_id | (channel << 6)); 685 } 686 687 static int ov5647_set_mode(struct v4l2_subdev *sd) 688 { 689 struct i2c_client *client = v4l2_get_subdevdata(sd); 690 struct ov5647 *sensor = to_sensor(sd); 691 u8 resetval, rdval; 692 int ret; 693 694 ret = ov5647_read(sd, OV5647_SW_STANDBY, &rdval); 695 if (ret < 0) 696 return ret; 697 698 ret = ov5647_write_array(sd, sensor->mode->reg_list, 699 sensor->mode->num_regs); 700 if (ret < 0) { 701 dev_err(&client->dev, "write sensor default regs error\n"); 702 return ret; 703 } 704 705 ret = ov5647_set_virtual_channel(sd, 0); 706 if (ret < 0) 707 return ret; 708 709 ret = ov5647_read(sd, OV5647_SW_STANDBY, &resetval); 710 if (ret < 0) 711 return ret; 712 713 if (!(resetval & 0x01)) { 714 dev_err(&client->dev, "Device was in SW standby"); 715 ret = ov5647_write(sd, OV5647_SW_STANDBY, 0x01); 716 if (ret < 0) 717 return ret; 718 } 719 720 return 0; 721 } 722 723 static int ov5647_stream_on(struct v4l2_subdev *sd) 724 { 725 struct i2c_client *client = v4l2_get_subdevdata(sd); 726 struct ov5647 *sensor = to_sensor(sd); 727 u8 val = MIPI_CTRL00_BUS_IDLE; 728 int ret; 729 730 ret = ov5647_set_mode(sd); 731 if (ret) { 732 dev_err(&client->dev, "Failed to program sensor mode: %d\n", ret); 733 return ret; 734 } 735 736 /* Apply customized values from user when stream starts. */ 737 ret = __v4l2_ctrl_handler_setup(sd->ctrl_handler); 738 if (ret) 739 return ret; 740 741 if (sensor->clock_ncont) 742 val |= MIPI_CTRL00_CLOCK_LANE_GATE | 743 MIPI_CTRL00_LINE_SYNC_ENABLE; 744 745 ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, val); 746 if (ret < 0) 747 return ret; 748 749 ret = ov5647_write(sd, OV5647_REG_FRAME_OFF_NUMBER, 0x00); 750 if (ret < 0) 751 return ret; 752 753 return ov5647_write(sd, OV5640_REG_PAD_OUT, 0x00); 754 } 755 756 static int ov5647_stream_off(struct v4l2_subdev *sd) 757 { 758 int ret; 759 760 ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, 761 MIPI_CTRL00_CLOCK_LANE_GATE | MIPI_CTRL00_BUS_IDLE | 762 MIPI_CTRL00_CLOCK_LANE_DISABLE); 763 if (ret < 0) 764 return ret; 765 766 ret = ov5647_write(sd, OV5647_REG_FRAME_OFF_NUMBER, 0x0f); 767 if (ret < 0) 768 return ret; 769 770 return ov5647_write(sd, OV5640_REG_PAD_OUT, 0x01); 771 } 772 773 static int ov5647_power_on(struct device *dev) 774 { 775 struct ov5647 *sensor = dev_get_drvdata(dev); 776 int ret; 777 778 dev_dbg(dev, "OV5647 power on\n"); 779 780 if (sensor->pwdn) { 781 gpiod_set_value_cansleep(sensor->pwdn, 0); 782 msleep(PWDN_ACTIVE_DELAY_MS); 783 } 784 785 ret = clk_prepare_enable(sensor->xclk); 786 if (ret < 0) { 787 dev_err(dev, "clk prepare enable failed\n"); 788 goto error_pwdn; 789 } 790 791 ret = ov5647_write_array(&sensor->sd, sensor_oe_enable_regs, 792 ARRAY_SIZE(sensor_oe_enable_regs)); 793 if (ret < 0) { 794 dev_err(dev, "write sensor_oe_enable_regs error\n"); 795 goto error_clk_disable; 796 } 797 798 /* Stream off to coax lanes into LP-11 state. */ 799 ret = ov5647_stream_off(&sensor->sd); 800 if (ret < 0) { 801 dev_err(dev, "camera not available, check power\n"); 802 goto error_clk_disable; 803 } 804 805 return 0; 806 807 error_clk_disable: 808 clk_disable_unprepare(sensor->xclk); 809 error_pwdn: 810 gpiod_set_value_cansleep(sensor->pwdn, 1); 811 812 return ret; 813 } 814 815 static int ov5647_power_off(struct device *dev) 816 { 817 struct ov5647 *sensor = dev_get_drvdata(dev); 818 u8 rdval; 819 int ret; 820 821 dev_dbg(dev, "OV5647 power off\n"); 822 823 ret = ov5647_write_array(&sensor->sd, sensor_oe_disable_regs, 824 ARRAY_SIZE(sensor_oe_disable_regs)); 825 if (ret < 0) 826 dev_dbg(dev, "disable oe failed\n"); 827 828 /* Enter software standby */ 829 ret = ov5647_read(&sensor->sd, OV5647_SW_STANDBY, &rdval); 830 if (ret < 0) 831 dev_dbg(dev, "software standby failed\n"); 832 833 rdval &= ~0x01; 834 ret = ov5647_write(&sensor->sd, OV5647_SW_STANDBY, rdval); 835 if (ret < 0) 836 dev_dbg(dev, "software standby failed\n"); 837 838 clk_disable_unprepare(sensor->xclk); 839 gpiod_set_value_cansleep(sensor->pwdn, 1); 840 841 return 0; 842 } 843 844 #ifdef CONFIG_VIDEO_ADV_DEBUG 845 static int ov5647_sensor_get_register(struct v4l2_subdev *sd, 846 struct v4l2_dbg_register *reg) 847 { 848 int ret; 849 u8 val; 850 851 ret = ov5647_read(sd, reg->reg & 0xff, &val); 852 if (ret < 0) 853 return ret; 854 855 reg->val = val; 856 reg->size = 1; 857 858 return 0; 859 } 860 861 static int ov5647_sensor_set_register(struct v4l2_subdev *sd, 862 const struct v4l2_dbg_register *reg) 863 { 864 return ov5647_write(sd, reg->reg & 0xff, reg->val & 0xff); 865 } 866 #endif 867 868 /* Subdev core operations registration */ 869 static const struct v4l2_subdev_core_ops ov5647_subdev_core_ops = { 870 .subscribe_event = v4l2_ctrl_subdev_subscribe_event, 871 .unsubscribe_event = v4l2_event_subdev_unsubscribe, 872 #ifdef CONFIG_VIDEO_ADV_DEBUG 873 .g_register = ov5647_sensor_get_register, 874 .s_register = ov5647_sensor_set_register, 875 #endif 876 }; 877 878 static const struct v4l2_rect * 879 __ov5647_get_pad_crop(struct ov5647 *ov5647, 880 struct v4l2_subdev_state *sd_state, 881 unsigned int pad, enum v4l2_subdev_format_whence which) 882 { 883 switch (which) { 884 case V4L2_SUBDEV_FORMAT_TRY: 885 return v4l2_subdev_state_get_crop(sd_state, pad); 886 case V4L2_SUBDEV_FORMAT_ACTIVE: 887 return &ov5647->mode->crop; 888 } 889 890 return NULL; 891 } 892 893 static int ov5647_s_stream(struct v4l2_subdev *sd, int enable) 894 { 895 struct i2c_client *client = v4l2_get_subdevdata(sd); 896 struct ov5647 *sensor = to_sensor(sd); 897 int ret; 898 899 mutex_lock(&sensor->lock); 900 901 if (enable) { 902 ret = pm_runtime_resume_and_get(&client->dev); 903 if (ret < 0) 904 goto error_unlock; 905 906 ret = ov5647_stream_on(sd); 907 if (ret < 0) { 908 dev_err(&client->dev, "stream start failed: %d\n", ret); 909 goto error_pm; 910 } 911 } else { 912 ret = ov5647_stream_off(sd); 913 if (ret < 0) { 914 dev_err(&client->dev, "stream stop failed: %d\n", ret); 915 goto error_pm; 916 } 917 pm_runtime_put(&client->dev); 918 } 919 920 mutex_unlock(&sensor->lock); 921 922 return 0; 923 924 error_pm: 925 pm_runtime_put(&client->dev); 926 error_unlock: 927 mutex_unlock(&sensor->lock); 928 929 return ret; 930 } 931 932 static const struct v4l2_subdev_video_ops ov5647_subdev_video_ops = { 933 .s_stream = ov5647_s_stream, 934 }; 935 936 static int ov5647_enum_mbus_code(struct v4l2_subdev *sd, 937 struct v4l2_subdev_state *sd_state, 938 struct v4l2_subdev_mbus_code_enum *code) 939 { 940 if (code->index > 0) 941 return -EINVAL; 942 943 code->code = MEDIA_BUS_FMT_SBGGR10_1X10; 944 945 return 0; 946 } 947 948 static int ov5647_enum_frame_size(struct v4l2_subdev *sd, 949 struct v4l2_subdev_state *sd_state, 950 struct v4l2_subdev_frame_size_enum *fse) 951 { 952 const struct v4l2_mbus_framefmt *fmt; 953 954 if (fse->code != MEDIA_BUS_FMT_SBGGR10_1X10 || 955 fse->index >= ARRAY_SIZE(ov5647_modes)) 956 return -EINVAL; 957 958 fmt = &ov5647_modes[fse->index].format; 959 fse->min_width = fmt->width; 960 fse->max_width = fmt->width; 961 fse->min_height = fmt->height; 962 fse->max_height = fmt->height; 963 964 return 0; 965 } 966 967 static int ov5647_get_pad_fmt(struct v4l2_subdev *sd, 968 struct v4l2_subdev_state *sd_state, 969 struct v4l2_subdev_format *format) 970 { 971 struct v4l2_mbus_framefmt *fmt = &format->format; 972 const struct v4l2_mbus_framefmt *sensor_format; 973 struct ov5647 *sensor = to_sensor(sd); 974 975 mutex_lock(&sensor->lock); 976 switch (format->which) { 977 case V4L2_SUBDEV_FORMAT_TRY: 978 sensor_format = v4l2_subdev_state_get_format(sd_state, 979 format->pad); 980 break; 981 default: 982 sensor_format = &sensor->mode->format; 983 break; 984 } 985 986 *fmt = *sensor_format; 987 mutex_unlock(&sensor->lock); 988 989 return 0; 990 } 991 992 static int ov5647_set_pad_fmt(struct v4l2_subdev *sd, 993 struct v4l2_subdev_state *sd_state, 994 struct v4l2_subdev_format *format) 995 { 996 struct v4l2_mbus_framefmt *fmt = &format->format; 997 struct ov5647 *sensor = to_sensor(sd); 998 const struct ov5647_mode *mode; 999 1000 mode = v4l2_find_nearest_size(ov5647_modes, ARRAY_SIZE(ov5647_modes), 1001 format.width, format.height, 1002 fmt->width, fmt->height); 1003 1004 /* Update the sensor mode and apply at it at streamon time. */ 1005 mutex_lock(&sensor->lock); 1006 if (format->which == V4L2_SUBDEV_FORMAT_TRY) { 1007 *v4l2_subdev_state_get_format(sd_state, format->pad) = mode->format; 1008 } else { 1009 int exposure_max, exposure_def; 1010 int hblank, vblank; 1011 1012 sensor->mode = mode; 1013 __v4l2_ctrl_modify_range(sensor->pixel_rate, mode->pixel_rate, 1014 mode->pixel_rate, 1, mode->pixel_rate); 1015 1016 hblank = mode->hts - mode->format.width; 1017 __v4l2_ctrl_modify_range(sensor->hblank, hblank, hblank, 1, 1018 hblank); 1019 1020 vblank = mode->vts - mode->format.height; 1021 __v4l2_ctrl_modify_range(sensor->vblank, OV5647_VBLANK_MIN, 1022 OV5647_VTS_MAX - mode->format.height, 1023 1, vblank); 1024 __v4l2_ctrl_s_ctrl(sensor->vblank, vblank); 1025 1026 exposure_max = mode->vts - 4; 1027 exposure_def = min(exposure_max, OV5647_EXPOSURE_DEFAULT); 1028 __v4l2_ctrl_modify_range(sensor->exposure, 1029 sensor->exposure->minimum, 1030 exposure_max, sensor->exposure->step, 1031 exposure_def); 1032 } 1033 *fmt = mode->format; 1034 mutex_unlock(&sensor->lock); 1035 1036 return 0; 1037 } 1038 1039 static int ov5647_get_selection(struct v4l2_subdev *sd, 1040 struct v4l2_subdev_state *sd_state, 1041 struct v4l2_subdev_selection *sel) 1042 { 1043 switch (sel->target) { 1044 case V4L2_SEL_TGT_CROP: { 1045 struct ov5647 *sensor = to_sensor(sd); 1046 1047 mutex_lock(&sensor->lock); 1048 sel->r = *__ov5647_get_pad_crop(sensor, sd_state, sel->pad, 1049 sel->which); 1050 mutex_unlock(&sensor->lock); 1051 1052 return 0; 1053 } 1054 1055 case V4L2_SEL_TGT_NATIVE_SIZE: 1056 sel->r.top = 0; 1057 sel->r.left = 0; 1058 sel->r.width = OV5647_NATIVE_WIDTH; 1059 sel->r.height = OV5647_NATIVE_HEIGHT; 1060 1061 return 0; 1062 1063 case V4L2_SEL_TGT_CROP_DEFAULT: 1064 case V4L2_SEL_TGT_CROP_BOUNDS: 1065 sel->r.top = OV5647_PIXEL_ARRAY_TOP; 1066 sel->r.left = OV5647_PIXEL_ARRAY_LEFT; 1067 sel->r.width = OV5647_PIXEL_ARRAY_WIDTH; 1068 sel->r.height = OV5647_PIXEL_ARRAY_HEIGHT; 1069 1070 return 0; 1071 } 1072 1073 return -EINVAL; 1074 } 1075 1076 static const struct v4l2_subdev_pad_ops ov5647_subdev_pad_ops = { 1077 .enum_mbus_code = ov5647_enum_mbus_code, 1078 .enum_frame_size = ov5647_enum_frame_size, 1079 .set_fmt = ov5647_set_pad_fmt, 1080 .get_fmt = ov5647_get_pad_fmt, 1081 .get_selection = ov5647_get_selection, 1082 }; 1083 1084 static const struct v4l2_subdev_ops ov5647_subdev_ops = { 1085 .core = &ov5647_subdev_core_ops, 1086 .video = &ov5647_subdev_video_ops, 1087 .pad = &ov5647_subdev_pad_ops, 1088 }; 1089 1090 static int ov5647_detect(struct v4l2_subdev *sd) 1091 { 1092 struct i2c_client *client = v4l2_get_subdevdata(sd); 1093 u8 read; 1094 int ret; 1095 1096 ret = ov5647_write(sd, OV5647_SW_RESET, 0x01); 1097 if (ret < 0) 1098 return ret; 1099 1100 ret = ov5647_read(sd, OV5647_REG_CHIPID_H, &read); 1101 if (ret < 0) 1102 return ret; 1103 1104 if (read != 0x56) { 1105 dev_err(&client->dev, "ID High expected 0x56 got %x", read); 1106 return -ENODEV; 1107 } 1108 1109 ret = ov5647_read(sd, OV5647_REG_CHIPID_L, &read); 1110 if (ret < 0) 1111 return ret; 1112 1113 if (read != 0x47) { 1114 dev_err(&client->dev, "ID Low expected 0x47 got %x", read); 1115 return -ENODEV; 1116 } 1117 1118 return ov5647_write(sd, OV5647_SW_RESET, 0x00); 1119 } 1120 1121 static int ov5647_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) 1122 { 1123 struct v4l2_mbus_framefmt *format = 1124 v4l2_subdev_state_get_format(fh->state, 0); 1125 struct v4l2_rect *crop = v4l2_subdev_state_get_crop(fh->state, 0); 1126 1127 crop->left = OV5647_PIXEL_ARRAY_LEFT; 1128 crop->top = OV5647_PIXEL_ARRAY_TOP; 1129 crop->width = OV5647_PIXEL_ARRAY_WIDTH; 1130 crop->height = OV5647_PIXEL_ARRAY_HEIGHT; 1131 1132 *format = OV5647_DEFAULT_FORMAT; 1133 1134 return 0; 1135 } 1136 1137 static const struct v4l2_subdev_internal_ops ov5647_subdev_internal_ops = { 1138 .open = ov5647_open, 1139 }; 1140 1141 static int ov5647_s_auto_white_balance(struct v4l2_subdev *sd, u32 val) 1142 { 1143 return ov5647_write(sd, OV5647_REG_AWB, val ? 1 : 0); 1144 } 1145 1146 static int ov5647_s_autogain(struct v4l2_subdev *sd, u32 val) 1147 { 1148 int ret; 1149 u8 reg; 1150 1151 /* Non-zero turns on AGC by clearing bit 1.*/ 1152 ret = ov5647_read(sd, OV5647_REG_AEC_AGC, ®); 1153 if (ret) 1154 return ret; 1155 1156 return ov5647_write(sd, OV5647_REG_AEC_AGC, val ? reg & ~BIT(1) 1157 : reg | BIT(1)); 1158 } 1159 1160 static int ov5647_s_exposure_auto(struct v4l2_subdev *sd, u32 val) 1161 { 1162 int ret; 1163 u8 reg; 1164 1165 /* 1166 * Everything except V4L2_EXPOSURE_MANUAL turns on AEC by 1167 * clearing bit 0. 1168 */ 1169 ret = ov5647_read(sd, OV5647_REG_AEC_AGC, ®); 1170 if (ret) 1171 return ret; 1172 1173 return ov5647_write(sd, OV5647_REG_AEC_AGC, 1174 val == V4L2_EXPOSURE_MANUAL ? reg | BIT(0) 1175 : reg & ~BIT(0)); 1176 } 1177 1178 static int ov5647_s_analogue_gain(struct v4l2_subdev *sd, u32 val) 1179 { 1180 int ret; 1181 1182 /* 10 bits of gain, 2 in the high register. */ 1183 ret = ov5647_write(sd, OV5647_REG_GAIN_HI, (val >> 8) & 3); 1184 if (ret) 1185 return ret; 1186 1187 return ov5647_write(sd, OV5647_REG_GAIN_LO, val & 0xff); 1188 } 1189 1190 static int ov5647_s_exposure(struct v4l2_subdev *sd, u32 val) 1191 { 1192 int ret; 1193 1194 /* 1195 * Sensor has 20 bits, but the bottom 4 bits are fractions of a line 1196 * which we leave as zero (and don't receive in "val"). 1197 */ 1198 ret = ov5647_write(sd, OV5647_REG_EXP_HI, (val >> 12) & 0xf); 1199 if (ret) 1200 return ret; 1201 1202 ret = ov5647_write(sd, OV5647_REG_EXP_MID, (val >> 4) & 0xff); 1203 if (ret) 1204 return ret; 1205 1206 return ov5647_write(sd, OV5647_REG_EXP_LO, (val & 0xf) << 4); 1207 } 1208 1209 static int ov5647_s_ctrl(struct v4l2_ctrl *ctrl) 1210 { 1211 struct ov5647 *sensor = container_of(ctrl->handler, 1212 struct ov5647, ctrls); 1213 struct v4l2_subdev *sd = &sensor->sd; 1214 struct i2c_client *client = v4l2_get_subdevdata(sd); 1215 int ret = 0; 1216 1217 1218 /* v4l2_ctrl_lock() locks our own mutex */ 1219 1220 if (ctrl->id == V4L2_CID_VBLANK) { 1221 int exposure_max, exposure_def; 1222 1223 /* Update max exposure while meeting expected vblanking */ 1224 exposure_max = sensor->mode->format.height + ctrl->val - 4; 1225 exposure_def = min(exposure_max, OV5647_EXPOSURE_DEFAULT); 1226 __v4l2_ctrl_modify_range(sensor->exposure, 1227 sensor->exposure->minimum, 1228 exposure_max, sensor->exposure->step, 1229 exposure_def); 1230 } 1231 1232 /* 1233 * If the device is not powered up do not apply any controls 1234 * to H/W at this time. Instead the controls will be restored 1235 * at s_stream(1) time. 1236 */ 1237 if (pm_runtime_get_if_in_use(&client->dev) == 0) 1238 return 0; 1239 1240 switch (ctrl->id) { 1241 case V4L2_CID_AUTO_WHITE_BALANCE: 1242 ret = ov5647_s_auto_white_balance(sd, ctrl->val); 1243 break; 1244 case V4L2_CID_AUTOGAIN: 1245 ret = ov5647_s_autogain(sd, ctrl->val); 1246 break; 1247 case V4L2_CID_EXPOSURE_AUTO: 1248 ret = ov5647_s_exposure_auto(sd, ctrl->val); 1249 break; 1250 case V4L2_CID_ANALOGUE_GAIN: 1251 ret = ov5647_s_analogue_gain(sd, ctrl->val); 1252 break; 1253 case V4L2_CID_EXPOSURE: 1254 ret = ov5647_s_exposure(sd, ctrl->val); 1255 break; 1256 case V4L2_CID_VBLANK: 1257 ret = ov5647_write16(sd, OV5647_REG_VTS_HI, 1258 sensor->mode->format.height + ctrl->val); 1259 break; 1260 case V4L2_CID_TEST_PATTERN: 1261 ret = ov5647_write(sd, OV5647_REG_ISPCTRL3D, 1262 ov5647_test_pattern_val[ctrl->val]); 1263 break; 1264 1265 /* Read-only, but we adjust it based on mode. */ 1266 case V4L2_CID_PIXEL_RATE: 1267 case V4L2_CID_HBLANK: 1268 /* Read-only, but we adjust it based on mode. */ 1269 break; 1270 1271 default: 1272 dev_info(&client->dev, 1273 "Control (id:0x%x, val:0x%x) not supported\n", 1274 ctrl->id, ctrl->val); 1275 return -EINVAL; 1276 } 1277 1278 pm_runtime_put(&client->dev); 1279 1280 return ret; 1281 } 1282 1283 static const struct v4l2_ctrl_ops ov5647_ctrl_ops = { 1284 .s_ctrl = ov5647_s_ctrl, 1285 }; 1286 1287 static int ov5647_init_controls(struct ov5647 *sensor) 1288 { 1289 struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd); 1290 int hblank, exposure_max, exposure_def; 1291 1292 v4l2_ctrl_handler_init(&sensor->ctrls, 9); 1293 1294 v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, 1295 V4L2_CID_AUTOGAIN, 0, 1, 1, 0); 1296 1297 v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, 1298 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 0); 1299 1300 v4l2_ctrl_new_std_menu(&sensor->ctrls, &ov5647_ctrl_ops, 1301 V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL, 1302 0, V4L2_EXPOSURE_MANUAL); 1303 1304 exposure_max = sensor->mode->vts - 4; 1305 exposure_def = min(exposure_max, OV5647_EXPOSURE_DEFAULT); 1306 sensor->exposure = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, 1307 V4L2_CID_EXPOSURE, 1308 OV5647_EXPOSURE_MIN, 1309 exposure_max, OV5647_EXPOSURE_STEP, 1310 exposure_def); 1311 1312 /* min: 16 = 1.0x; max (10 bits); default: 32 = 2.0x. */ 1313 v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, 1314 V4L2_CID_ANALOGUE_GAIN, 16, 1023, 1, 32); 1315 1316 /* By default, PIXEL_RATE is read only, but it does change per mode */ 1317 sensor->pixel_rate = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, 1318 V4L2_CID_PIXEL_RATE, 1319 sensor->mode->pixel_rate, 1320 sensor->mode->pixel_rate, 1, 1321 sensor->mode->pixel_rate); 1322 1323 /* By default, HBLANK is read only, but it does change per mode. */ 1324 hblank = sensor->mode->hts - sensor->mode->format.width; 1325 sensor->hblank = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, 1326 V4L2_CID_HBLANK, hblank, hblank, 1, 1327 hblank); 1328 1329 sensor->vblank = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, 1330 V4L2_CID_VBLANK, OV5647_VBLANK_MIN, 1331 OV5647_VTS_MAX - 1332 sensor->mode->format.height, 1, 1333 sensor->mode->vts - 1334 sensor->mode->format.height); 1335 1336 v4l2_ctrl_new_std_menu_items(&sensor->ctrls, &ov5647_ctrl_ops, 1337 V4L2_CID_TEST_PATTERN, 1338 ARRAY_SIZE(ov5647_test_pattern_menu) - 1, 1339 0, 0, ov5647_test_pattern_menu); 1340 1341 if (sensor->ctrls.error) 1342 goto handler_free; 1343 1344 sensor->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1345 sensor->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1346 sensor->sd.ctrl_handler = &sensor->ctrls; 1347 1348 return 0; 1349 1350 handler_free: 1351 dev_err(&client->dev, "%s Controls initialization failed (%d)\n", 1352 __func__, sensor->ctrls.error); 1353 v4l2_ctrl_handler_free(&sensor->ctrls); 1354 1355 return sensor->ctrls.error; 1356 } 1357 1358 static int ov5647_parse_dt(struct ov5647 *sensor, struct device_node *np) 1359 { 1360 struct v4l2_fwnode_endpoint bus_cfg = { 1361 .bus_type = V4L2_MBUS_CSI2_DPHY, 1362 }; 1363 struct device_node *ep __free(device_node) = 1364 of_graph_get_endpoint_by_regs(np, 0, -1); 1365 int ret; 1366 1367 if (!ep) 1368 return -EINVAL; 1369 1370 ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &bus_cfg); 1371 if (ret) 1372 return ret; 1373 1374 sensor->clock_ncont = bus_cfg.bus.mipi_csi2.flags & 1375 V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK; 1376 1377 return 0; 1378 } 1379 1380 static int ov5647_probe(struct i2c_client *client) 1381 { 1382 struct device_node *np = client->dev.of_node; 1383 struct device *dev = &client->dev; 1384 struct ov5647 *sensor; 1385 struct v4l2_subdev *sd; 1386 u32 xclk_freq; 1387 int ret; 1388 1389 sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); 1390 if (!sensor) 1391 return -ENOMEM; 1392 1393 if (IS_ENABLED(CONFIG_OF) && np) { 1394 ret = ov5647_parse_dt(sensor, np); 1395 if (ret) { 1396 dev_err(dev, "DT parsing error: %d\n", ret); 1397 return ret; 1398 } 1399 } 1400 1401 sensor->xclk = devm_clk_get(dev, NULL); 1402 if (IS_ERR(sensor->xclk)) { 1403 dev_err(dev, "could not get xclk"); 1404 return PTR_ERR(sensor->xclk); 1405 } 1406 1407 xclk_freq = clk_get_rate(sensor->xclk); 1408 if (xclk_freq != 25000000) { 1409 dev_err(dev, "Unsupported clock frequency: %u\n", xclk_freq); 1410 return -EINVAL; 1411 } 1412 1413 /* Request the power down GPIO asserted. */ 1414 sensor->pwdn = devm_gpiod_get_optional(dev, "pwdn", GPIOD_OUT_HIGH); 1415 if (IS_ERR(sensor->pwdn)) { 1416 dev_err(dev, "Failed to get 'pwdn' gpio\n"); 1417 return -EINVAL; 1418 } 1419 1420 mutex_init(&sensor->lock); 1421 1422 sensor->mode = OV5647_DEFAULT_MODE; 1423 1424 ret = ov5647_init_controls(sensor); 1425 if (ret) 1426 goto mutex_destroy; 1427 1428 sd = &sensor->sd; 1429 v4l2_i2c_subdev_init(sd, client, &ov5647_subdev_ops); 1430 sd->internal_ops = &ov5647_subdev_internal_ops; 1431 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; 1432 1433 sensor->pad.flags = MEDIA_PAD_FL_SOURCE; 1434 sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; 1435 ret = media_entity_pads_init(&sd->entity, 1, &sensor->pad); 1436 if (ret < 0) 1437 goto ctrl_handler_free; 1438 1439 ret = ov5647_power_on(dev); 1440 if (ret) 1441 goto entity_cleanup; 1442 1443 ret = ov5647_detect(sd); 1444 if (ret < 0) 1445 goto power_off; 1446 1447 ret = v4l2_async_register_subdev(sd); 1448 if (ret < 0) 1449 goto power_off; 1450 1451 /* Enable runtime PM and turn off the device */ 1452 pm_runtime_set_active(dev); 1453 pm_runtime_enable(dev); 1454 pm_runtime_idle(dev); 1455 1456 dev_dbg(dev, "OmniVision OV5647 camera driver probed\n"); 1457 1458 return 0; 1459 1460 power_off: 1461 ov5647_power_off(dev); 1462 entity_cleanup: 1463 media_entity_cleanup(&sd->entity); 1464 ctrl_handler_free: 1465 v4l2_ctrl_handler_free(&sensor->ctrls); 1466 mutex_destroy: 1467 mutex_destroy(&sensor->lock); 1468 1469 return ret; 1470 } 1471 1472 static void ov5647_remove(struct i2c_client *client) 1473 { 1474 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1475 struct ov5647 *sensor = to_sensor(sd); 1476 1477 v4l2_async_unregister_subdev(&sensor->sd); 1478 media_entity_cleanup(&sensor->sd.entity); 1479 v4l2_ctrl_handler_free(&sensor->ctrls); 1480 v4l2_device_unregister_subdev(sd); 1481 pm_runtime_disable(&client->dev); 1482 mutex_destroy(&sensor->lock); 1483 } 1484 1485 static const struct dev_pm_ops ov5647_pm_ops = { 1486 SET_RUNTIME_PM_OPS(ov5647_power_off, ov5647_power_on, NULL) 1487 }; 1488 1489 static const struct i2c_device_id ov5647_id[] = { 1490 { "ov5647" }, 1491 { /* sentinel */ } 1492 }; 1493 MODULE_DEVICE_TABLE(i2c, ov5647_id); 1494 1495 #if IS_ENABLED(CONFIG_OF) 1496 static const struct of_device_id ov5647_of_match[] = { 1497 { .compatible = "ovti,ov5647" }, 1498 { /* sentinel */ }, 1499 }; 1500 MODULE_DEVICE_TABLE(of, ov5647_of_match); 1501 #endif 1502 1503 static struct i2c_driver ov5647_driver = { 1504 .driver = { 1505 .of_match_table = of_match_ptr(ov5647_of_match), 1506 .name = "ov5647", 1507 .pm = &ov5647_pm_ops, 1508 }, 1509 .probe = ov5647_probe, 1510 .remove = ov5647_remove, 1511 .id_table = ov5647_id, 1512 }; 1513 1514 module_i2c_driver(ov5647_driver); 1515 1516 MODULE_AUTHOR("Ramiro Oliveira <roliveir@synopsys.com>"); 1517 MODULE_DESCRIPTION("A low-level driver for OmniVision ov5647 sensors"); 1518 MODULE_LICENSE("GPL v2"); 1519