1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * A V4L2 driver for Sony IMX219 cameras. 4 * Copyright (C) 2019, Raspberry Pi (Trading) Ltd 5 * 6 * Based on Sony imx258 camera driver 7 * Copyright (C) 2018 Intel Corporation 8 * 9 * DT / fwnode changes, and regulator / GPIO control taken from imx214 driver 10 * Copyright 2018 Qtechnology A/S 11 * 12 * Flip handling taken from the Sony IMX319 driver. 13 * Copyright (C) 2018 Intel Corporation 14 * 15 */ 16 17 #include <linux/clk.h> 18 #include <linux/delay.h> 19 #include <linux/gpio/consumer.h> 20 #include <linux/i2c.h> 21 #include <linux/module.h> 22 #include <linux/pm_runtime.h> 23 #include <linux/regulator/consumer.h> 24 #include <media/v4l2-ctrls.h> 25 #include <media/v4l2-device.h> 26 #include <media/v4l2-event.h> 27 #include <media/v4l2-fwnode.h> 28 #include <media/v4l2-mediabus.h> 29 #include <asm/unaligned.h> 30 31 #define IMX219_REG_VALUE_08BIT 1 32 #define IMX219_REG_VALUE_16BIT 2 33 34 #define IMX219_REG_MODE_SELECT 0x0100 35 #define IMX219_MODE_STANDBY 0x00 36 #define IMX219_MODE_STREAMING 0x01 37 38 /* Chip ID */ 39 #define IMX219_REG_CHIP_ID 0x0000 40 #define IMX219_CHIP_ID 0x0219 41 42 /* External clock frequency is 24.0M */ 43 #define IMX219_XCLK_FREQ 24000000 44 45 /* Pixel rate is fixed at 182.4M for all the modes */ 46 #define IMX219_PIXEL_RATE 182400000 47 48 #define IMX219_DEFAULT_LINK_FREQ 456000000 49 50 /* V_TIMING internal */ 51 #define IMX219_REG_VTS 0x0160 52 #define IMX219_VTS_15FPS 0x0dc6 53 #define IMX219_VTS_30FPS_1080P 0x06e3 54 #define IMX219_VTS_30FPS_BINNED 0x06e3 55 #define IMX219_VTS_30FPS_640x480 0x06e3 56 #define IMX219_VTS_MAX 0xffff 57 58 #define IMX219_VBLANK_MIN 4 59 60 /*Frame Length Line*/ 61 #define IMX219_FLL_MIN 0x08a6 62 #define IMX219_FLL_MAX 0xffff 63 #define IMX219_FLL_STEP 1 64 #define IMX219_FLL_DEFAULT 0x0c98 65 66 /* HBLANK control - read only */ 67 #define IMX219_PPL_DEFAULT 3448 68 69 /* Exposure control */ 70 #define IMX219_REG_EXPOSURE 0x015a 71 #define IMX219_EXPOSURE_MIN 4 72 #define IMX219_EXPOSURE_STEP 1 73 #define IMX219_EXPOSURE_DEFAULT 0x640 74 #define IMX219_EXPOSURE_MAX 65535 75 76 /* Analog gain control */ 77 #define IMX219_REG_ANALOG_GAIN 0x0157 78 #define IMX219_ANA_GAIN_MIN 0 79 #define IMX219_ANA_GAIN_MAX 232 80 #define IMX219_ANA_GAIN_STEP 1 81 #define IMX219_ANA_GAIN_DEFAULT 0x0 82 83 /* Digital gain control */ 84 #define IMX219_REG_DIGITAL_GAIN 0x0158 85 #define IMX219_DGTL_GAIN_MIN 0x0100 86 #define IMX219_DGTL_GAIN_MAX 0x0fff 87 #define IMX219_DGTL_GAIN_DEFAULT 0x0100 88 #define IMX219_DGTL_GAIN_STEP 1 89 90 #define IMX219_REG_ORIENTATION 0x0172 91 92 /* Test Pattern Control */ 93 #define IMX219_REG_TEST_PATTERN 0x0600 94 #define IMX219_TEST_PATTERN_DISABLE 0 95 #define IMX219_TEST_PATTERN_SOLID_COLOR 1 96 #define IMX219_TEST_PATTERN_COLOR_BARS 2 97 #define IMX219_TEST_PATTERN_GREY_COLOR 3 98 #define IMX219_TEST_PATTERN_PN9 4 99 100 /* Test pattern colour components */ 101 #define IMX219_REG_TESTP_RED 0x0602 102 #define IMX219_REG_TESTP_GREENR 0x0604 103 #define IMX219_REG_TESTP_BLUE 0x0606 104 #define IMX219_REG_TESTP_GREENB 0x0608 105 #define IMX219_TESTP_COLOUR_MIN 0 106 #define IMX219_TESTP_COLOUR_MAX 0x03ff 107 #define IMX219_TESTP_COLOUR_STEP 1 108 #define IMX219_TESTP_RED_DEFAULT IMX219_TESTP_COLOUR_MAX 109 #define IMX219_TESTP_GREENR_DEFAULT 0 110 #define IMX219_TESTP_BLUE_DEFAULT 0 111 #define IMX219_TESTP_GREENB_DEFAULT 0 112 113 /* IMX219 native and active pixel array size. */ 114 #define IMX219_NATIVE_WIDTH 3296U 115 #define IMX219_NATIVE_HEIGHT 2480U 116 #define IMX219_PIXEL_ARRAY_LEFT 8U 117 #define IMX219_PIXEL_ARRAY_TOP 8U 118 #define IMX219_PIXEL_ARRAY_WIDTH 3280U 119 #define IMX219_PIXEL_ARRAY_HEIGHT 2464U 120 121 struct imx219_reg { 122 u16 address; 123 u8 val; 124 }; 125 126 struct imx219_reg_list { 127 unsigned int num_of_regs; 128 const struct imx219_reg *regs; 129 }; 130 131 /* Mode : resolution and related config&values */ 132 struct imx219_mode { 133 /* Frame width */ 134 unsigned int width; 135 /* Frame height */ 136 unsigned int height; 137 138 /* Analog crop rectangle. */ 139 struct v4l2_rect crop; 140 141 /* V-timing */ 142 unsigned int vts_def; 143 144 /* Default register values */ 145 struct imx219_reg_list reg_list; 146 }; 147 148 /* 149 * Register sets lifted off the i2C interface from the Raspberry Pi firmware 150 * driver. 151 * 3280x2464 = mode 2, 1920x1080 = mode 1, 1640x1232 = mode 4, 640x480 = mode 7. 152 */ 153 static const struct imx219_reg mode_3280x2464_regs[] = { 154 {0x0100, 0x00}, 155 {0x30eb, 0x0c}, 156 {0x30eb, 0x05}, 157 {0x300a, 0xff}, 158 {0x300b, 0xff}, 159 {0x30eb, 0x05}, 160 {0x30eb, 0x09}, 161 {0x0114, 0x01}, 162 {0x0128, 0x00}, 163 {0x012a, 0x18}, 164 {0x012b, 0x00}, 165 {0x0164, 0x00}, 166 {0x0165, 0x00}, 167 {0x0166, 0x0c}, 168 {0x0167, 0xcf}, 169 {0x0168, 0x00}, 170 {0x0169, 0x00}, 171 {0x016a, 0x09}, 172 {0x016b, 0x9f}, 173 {0x016c, 0x0c}, 174 {0x016d, 0xd0}, 175 {0x016e, 0x09}, 176 {0x016f, 0xa0}, 177 {0x0170, 0x01}, 178 {0x0171, 0x01}, 179 {0x0174, 0x00}, 180 {0x0175, 0x00}, 181 {0x0301, 0x05}, 182 {0x0303, 0x01}, 183 {0x0304, 0x03}, 184 {0x0305, 0x03}, 185 {0x0306, 0x00}, 186 {0x0307, 0x39}, 187 {0x030b, 0x01}, 188 {0x030c, 0x00}, 189 {0x030d, 0x72}, 190 {0x0624, 0x0c}, 191 {0x0625, 0xd0}, 192 {0x0626, 0x09}, 193 {0x0627, 0xa0}, 194 {0x455e, 0x00}, 195 {0x471e, 0x4b}, 196 {0x4767, 0x0f}, 197 {0x4750, 0x14}, 198 {0x4540, 0x00}, 199 {0x47b4, 0x14}, 200 {0x4713, 0x30}, 201 {0x478b, 0x10}, 202 {0x478f, 0x10}, 203 {0x4793, 0x10}, 204 {0x4797, 0x0e}, 205 {0x479b, 0x0e}, 206 {0x0162, 0x0d}, 207 {0x0163, 0x78}, 208 }; 209 210 static const struct imx219_reg mode_1920_1080_regs[] = { 211 {0x0100, 0x00}, 212 {0x30eb, 0x05}, 213 {0x30eb, 0x0c}, 214 {0x300a, 0xff}, 215 {0x300b, 0xff}, 216 {0x30eb, 0x05}, 217 {0x30eb, 0x09}, 218 {0x0114, 0x01}, 219 {0x0128, 0x00}, 220 {0x012a, 0x18}, 221 {0x012b, 0x00}, 222 {0x0162, 0x0d}, 223 {0x0163, 0x78}, 224 {0x0164, 0x02}, 225 {0x0165, 0xa8}, 226 {0x0166, 0x0a}, 227 {0x0167, 0x27}, 228 {0x0168, 0x02}, 229 {0x0169, 0xb4}, 230 {0x016a, 0x06}, 231 {0x016b, 0xeb}, 232 {0x016c, 0x07}, 233 {0x016d, 0x80}, 234 {0x016e, 0x04}, 235 {0x016f, 0x38}, 236 {0x0170, 0x01}, 237 {0x0171, 0x01}, 238 {0x0174, 0x00}, 239 {0x0175, 0x00}, 240 {0x0301, 0x05}, 241 {0x0303, 0x01}, 242 {0x0304, 0x03}, 243 {0x0305, 0x03}, 244 {0x0306, 0x00}, 245 {0x0307, 0x39}, 246 {0x030b, 0x01}, 247 {0x030c, 0x00}, 248 {0x030d, 0x72}, 249 {0x0624, 0x07}, 250 {0x0625, 0x80}, 251 {0x0626, 0x04}, 252 {0x0627, 0x38}, 253 {0x455e, 0x00}, 254 {0x471e, 0x4b}, 255 {0x4767, 0x0f}, 256 {0x4750, 0x14}, 257 {0x4540, 0x00}, 258 {0x47b4, 0x14}, 259 {0x4713, 0x30}, 260 {0x478b, 0x10}, 261 {0x478f, 0x10}, 262 {0x4793, 0x10}, 263 {0x4797, 0x0e}, 264 {0x479b, 0x0e}, 265 {0x0162, 0x0d}, 266 {0x0163, 0x78}, 267 }; 268 269 static const struct imx219_reg mode_1640_1232_regs[] = { 270 {0x0100, 0x00}, 271 {0x30eb, 0x0c}, 272 {0x30eb, 0x05}, 273 {0x300a, 0xff}, 274 {0x300b, 0xff}, 275 {0x30eb, 0x05}, 276 {0x30eb, 0x09}, 277 {0x0114, 0x01}, 278 {0x0128, 0x00}, 279 {0x012a, 0x18}, 280 {0x012b, 0x00}, 281 {0x0164, 0x00}, 282 {0x0165, 0x00}, 283 {0x0166, 0x0c}, 284 {0x0167, 0xcf}, 285 {0x0168, 0x00}, 286 {0x0169, 0x00}, 287 {0x016a, 0x09}, 288 {0x016b, 0x9f}, 289 {0x016c, 0x06}, 290 {0x016d, 0x68}, 291 {0x016e, 0x04}, 292 {0x016f, 0xd0}, 293 {0x0170, 0x01}, 294 {0x0171, 0x01}, 295 {0x0174, 0x01}, 296 {0x0175, 0x01}, 297 {0x0301, 0x05}, 298 {0x0303, 0x01}, 299 {0x0304, 0x03}, 300 {0x0305, 0x03}, 301 {0x0306, 0x00}, 302 {0x0307, 0x39}, 303 {0x030b, 0x01}, 304 {0x030c, 0x00}, 305 {0x030d, 0x72}, 306 {0x0624, 0x06}, 307 {0x0625, 0x68}, 308 {0x0626, 0x04}, 309 {0x0627, 0xd0}, 310 {0x455e, 0x00}, 311 {0x471e, 0x4b}, 312 {0x4767, 0x0f}, 313 {0x4750, 0x14}, 314 {0x4540, 0x00}, 315 {0x47b4, 0x14}, 316 {0x4713, 0x30}, 317 {0x478b, 0x10}, 318 {0x478f, 0x10}, 319 {0x4793, 0x10}, 320 {0x4797, 0x0e}, 321 {0x479b, 0x0e}, 322 {0x0162, 0x0d}, 323 {0x0163, 0x78}, 324 }; 325 326 static const struct imx219_reg mode_640_480_regs[] = { 327 {0x0100, 0x00}, 328 {0x30eb, 0x05}, 329 {0x30eb, 0x0c}, 330 {0x300a, 0xff}, 331 {0x300b, 0xff}, 332 {0x30eb, 0x05}, 333 {0x30eb, 0x09}, 334 {0x0114, 0x01}, 335 {0x0128, 0x00}, 336 {0x012a, 0x18}, 337 {0x012b, 0x00}, 338 {0x0162, 0x0d}, 339 {0x0163, 0x78}, 340 {0x0164, 0x03}, 341 {0x0165, 0xe8}, 342 {0x0166, 0x08}, 343 {0x0167, 0xe7}, 344 {0x0168, 0x02}, 345 {0x0169, 0xf0}, 346 {0x016a, 0x06}, 347 {0x016b, 0xaf}, 348 {0x016c, 0x02}, 349 {0x016d, 0x80}, 350 {0x016e, 0x01}, 351 {0x016f, 0xe0}, 352 {0x0170, 0x01}, 353 {0x0171, 0x01}, 354 {0x0174, 0x03}, 355 {0x0175, 0x03}, 356 {0x0301, 0x05}, 357 {0x0303, 0x01}, 358 {0x0304, 0x03}, 359 {0x0305, 0x03}, 360 {0x0306, 0x00}, 361 {0x0307, 0x39}, 362 {0x030b, 0x01}, 363 {0x030c, 0x00}, 364 {0x030d, 0x72}, 365 {0x0624, 0x06}, 366 {0x0625, 0x68}, 367 {0x0626, 0x04}, 368 {0x0627, 0xd0}, 369 {0x455e, 0x00}, 370 {0x471e, 0x4b}, 371 {0x4767, 0x0f}, 372 {0x4750, 0x14}, 373 {0x4540, 0x00}, 374 {0x47b4, 0x14}, 375 {0x4713, 0x30}, 376 {0x478b, 0x10}, 377 {0x478f, 0x10}, 378 {0x4793, 0x10}, 379 {0x4797, 0x0e}, 380 {0x479b, 0x0e}, 381 }; 382 383 static const struct imx219_reg raw8_framefmt_regs[] = { 384 {0x018c, 0x08}, 385 {0x018d, 0x08}, 386 {0x0309, 0x08}, 387 }; 388 389 static const struct imx219_reg raw10_framefmt_regs[] = { 390 {0x018c, 0x0a}, 391 {0x018d, 0x0a}, 392 {0x0309, 0x0a}, 393 }; 394 395 static const char * const imx219_test_pattern_menu[] = { 396 "Disabled", 397 "Color Bars", 398 "Solid Color", 399 "Grey Color Bars", 400 "PN9" 401 }; 402 403 static const int imx219_test_pattern_val[] = { 404 IMX219_TEST_PATTERN_DISABLE, 405 IMX219_TEST_PATTERN_COLOR_BARS, 406 IMX219_TEST_PATTERN_SOLID_COLOR, 407 IMX219_TEST_PATTERN_GREY_COLOR, 408 IMX219_TEST_PATTERN_PN9, 409 }; 410 411 /* regulator supplies */ 412 static const char * const imx219_supply_name[] = { 413 /* Supplies can be enabled in any order */ 414 "VANA", /* Analog (2.8V) supply */ 415 "VDIG", /* Digital Core (1.8V) supply */ 416 "VDDL", /* IF (1.2V) supply */ 417 }; 418 419 #define IMX219_NUM_SUPPLIES ARRAY_SIZE(imx219_supply_name) 420 421 /* 422 * The supported formats. 423 * This table MUST contain 4 entries per format, to cover the various flip 424 * combinations in the order 425 * - no flip 426 * - h flip 427 * - v flip 428 * - h&v flips 429 */ 430 static const u32 codes[] = { 431 MEDIA_BUS_FMT_SRGGB10_1X10, 432 MEDIA_BUS_FMT_SGRBG10_1X10, 433 MEDIA_BUS_FMT_SGBRG10_1X10, 434 MEDIA_BUS_FMT_SBGGR10_1X10, 435 436 MEDIA_BUS_FMT_SRGGB8_1X8, 437 MEDIA_BUS_FMT_SGRBG8_1X8, 438 MEDIA_BUS_FMT_SGBRG8_1X8, 439 MEDIA_BUS_FMT_SBGGR8_1X8, 440 }; 441 442 /* 443 * Initialisation delay between XCLR low->high and the moment when the sensor 444 * can start capture (i.e. can leave software stanby) must be not less than: 445 * t4 + max(t5, t6 + <time to initialize the sensor register over I2C>) 446 * where 447 * t4 is fixed, and is max 200uS, 448 * t5 is fixed, and is 6000uS, 449 * t6 depends on the sensor external clock, and is max 32000 clock periods. 450 * As per sensor datasheet, the external clock must be from 6MHz to 27MHz. 451 * So for any acceptable external clock t6 is always within the range of 452 * 1185 to 5333 uS, and is always less than t5. 453 * For this reason this is always safe to wait (t4 + t5) = 6200 uS, then 454 * initialize the sensor over I2C, and then exit the software standby. 455 * 456 * This start-up time can be optimized a bit more, if we start the writes 457 * over I2C after (t4+t6), but before (t4+t5) expires. But then sensor 458 * initialization over I2C may complete before (t4+t5) expires, and we must 459 * ensure that capture is not started before (t4+t5). 460 * 461 * This delay doesn't account for the power supply startup time. If needed, 462 * this should be taken care of via the regulator framework. E.g. in the 463 * case of DT for regulator-fixed one should define the startup-delay-us 464 * property. 465 */ 466 #define IMX219_XCLR_MIN_DELAY_US 6200 467 #define IMX219_XCLR_DELAY_RANGE_US 1000 468 469 /* Mode configs */ 470 static const struct imx219_mode supported_modes[] = { 471 { 472 /* 8MPix 15fps mode */ 473 .width = 3280, 474 .height = 2464, 475 .crop = { 476 .left = 0, 477 .top = 0, 478 .width = 3280, 479 .height = 2464 480 }, 481 .vts_def = IMX219_VTS_15FPS, 482 .reg_list = { 483 .num_of_regs = ARRAY_SIZE(mode_3280x2464_regs), 484 .regs = mode_3280x2464_regs, 485 }, 486 }, 487 { 488 /* 1080P 30fps cropped */ 489 .width = 1920, 490 .height = 1080, 491 .crop = { 492 .left = 680, 493 .top = 692, 494 .width = 1920, 495 .height = 1080 496 }, 497 .vts_def = IMX219_VTS_30FPS_1080P, 498 .reg_list = { 499 .num_of_regs = ARRAY_SIZE(mode_1920_1080_regs), 500 .regs = mode_1920_1080_regs, 501 }, 502 }, 503 { 504 /* 2x2 binned 30fps mode */ 505 .width = 1640, 506 .height = 1232, 507 .crop = { 508 .left = 0, 509 .top = 0, 510 .width = 3280, 511 .height = 2464 512 }, 513 .vts_def = IMX219_VTS_30FPS_BINNED, 514 .reg_list = { 515 .num_of_regs = ARRAY_SIZE(mode_1640_1232_regs), 516 .regs = mode_1640_1232_regs, 517 }, 518 }, 519 { 520 /* 640x480 30fps mode */ 521 .width = 640, 522 .height = 480, 523 .crop = { 524 .left = 1000, 525 .top = 752, 526 .width = 1280, 527 .height = 960 528 }, 529 .vts_def = IMX219_VTS_30FPS_640x480, 530 .reg_list = { 531 .num_of_regs = ARRAY_SIZE(mode_640_480_regs), 532 .regs = mode_640_480_regs, 533 }, 534 }, 535 }; 536 537 struct imx219 { 538 struct v4l2_subdev sd; 539 struct media_pad pad; 540 541 struct v4l2_mbus_framefmt fmt; 542 543 struct clk *xclk; /* system clock to IMX219 */ 544 u32 xclk_freq; 545 546 struct gpio_desc *reset_gpio; 547 struct regulator_bulk_data supplies[IMX219_NUM_SUPPLIES]; 548 549 struct v4l2_ctrl_handler ctrl_handler; 550 /* V4L2 Controls */ 551 struct v4l2_ctrl *pixel_rate; 552 struct v4l2_ctrl *exposure; 553 struct v4l2_ctrl *vflip; 554 struct v4l2_ctrl *hflip; 555 struct v4l2_ctrl *vblank; 556 struct v4l2_ctrl *hblank; 557 558 /* Current mode */ 559 const struct imx219_mode *mode; 560 561 /* 562 * Mutex for serialized access: 563 * Protect sensor module set pad format and start/stop streaming safely. 564 */ 565 struct mutex mutex; 566 567 /* Streaming on/off */ 568 bool streaming; 569 }; 570 571 static inline struct imx219 *to_imx219(struct v4l2_subdev *_sd) 572 { 573 return container_of(_sd, struct imx219, sd); 574 } 575 576 /* Read registers up to 2 at a time */ 577 static int imx219_read_reg(struct imx219 *imx219, u16 reg, u32 len, u32 *val) 578 { 579 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); 580 struct i2c_msg msgs[2]; 581 u8 addr_buf[2] = { reg >> 8, reg & 0xff }; 582 u8 data_buf[4] = { 0, }; 583 int ret; 584 585 if (len > 4) 586 return -EINVAL; 587 588 /* Write register address */ 589 msgs[0].addr = client->addr; 590 msgs[0].flags = 0; 591 msgs[0].len = ARRAY_SIZE(addr_buf); 592 msgs[0].buf = addr_buf; 593 594 /* Read data from register */ 595 msgs[1].addr = client->addr; 596 msgs[1].flags = I2C_M_RD; 597 msgs[1].len = len; 598 msgs[1].buf = &data_buf[4 - len]; 599 600 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); 601 if (ret != ARRAY_SIZE(msgs)) 602 return -EIO; 603 604 *val = get_unaligned_be32(data_buf); 605 606 return 0; 607 } 608 609 /* Write registers up to 2 at a time */ 610 static int imx219_write_reg(struct imx219 *imx219, u16 reg, u32 len, u32 val) 611 { 612 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); 613 u8 buf[6]; 614 615 if (len > 4) 616 return -EINVAL; 617 618 put_unaligned_be16(reg, buf); 619 put_unaligned_be32(val << (8 * (4 - len)), buf + 2); 620 if (i2c_master_send(client, buf, len + 2) != len + 2) 621 return -EIO; 622 623 return 0; 624 } 625 626 /* Write a list of registers */ 627 static int imx219_write_regs(struct imx219 *imx219, 628 const struct imx219_reg *regs, u32 len) 629 { 630 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); 631 unsigned int i; 632 int ret; 633 634 for (i = 0; i < len; i++) { 635 ret = imx219_write_reg(imx219, regs[i].address, 1, regs[i].val); 636 if (ret) { 637 dev_err_ratelimited(&client->dev, 638 "Failed to write reg 0x%4.4x. error = %d\n", 639 regs[i].address, ret); 640 641 return ret; 642 } 643 } 644 645 return 0; 646 } 647 648 /* Get bayer order based on flip setting. */ 649 static u32 imx219_get_format_code(struct imx219 *imx219, u32 code) 650 { 651 unsigned int i; 652 653 lockdep_assert_held(&imx219->mutex); 654 655 for (i = 0; i < ARRAY_SIZE(codes); i++) 656 if (codes[i] == code) 657 break; 658 659 if (i >= ARRAY_SIZE(codes)) 660 i = 0; 661 662 i = (i & ~3) | (imx219->vflip->val ? 2 : 0) | 663 (imx219->hflip->val ? 1 : 0); 664 665 return codes[i]; 666 } 667 668 static void imx219_set_default_format(struct imx219 *imx219) 669 { 670 struct v4l2_mbus_framefmt *fmt; 671 672 fmt = &imx219->fmt; 673 fmt->code = MEDIA_BUS_FMT_SRGGB10_1X10; 674 fmt->colorspace = V4L2_COLORSPACE_SRGB; 675 fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace); 676 fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, 677 fmt->colorspace, 678 fmt->ycbcr_enc); 679 fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace); 680 fmt->width = supported_modes[0].width; 681 fmt->height = supported_modes[0].height; 682 fmt->field = V4L2_FIELD_NONE; 683 } 684 685 static int imx219_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) 686 { 687 struct imx219 *imx219 = to_imx219(sd); 688 struct v4l2_mbus_framefmt *try_fmt = 689 v4l2_subdev_get_try_format(sd, fh->pad, 0); 690 struct v4l2_rect *try_crop; 691 692 mutex_lock(&imx219->mutex); 693 694 /* Initialize try_fmt */ 695 try_fmt->width = supported_modes[0].width; 696 try_fmt->height = supported_modes[0].height; 697 try_fmt->code = imx219_get_format_code(imx219, 698 MEDIA_BUS_FMT_SRGGB10_1X10); 699 try_fmt->field = V4L2_FIELD_NONE; 700 701 /* Initialize try_crop rectangle. */ 702 try_crop = v4l2_subdev_get_try_crop(sd, fh->pad, 0); 703 try_crop->top = IMX219_PIXEL_ARRAY_TOP; 704 try_crop->left = IMX219_PIXEL_ARRAY_LEFT; 705 try_crop->width = IMX219_PIXEL_ARRAY_WIDTH; 706 try_crop->height = IMX219_PIXEL_ARRAY_HEIGHT; 707 708 mutex_unlock(&imx219->mutex); 709 710 return 0; 711 } 712 713 static int imx219_set_ctrl(struct v4l2_ctrl *ctrl) 714 { 715 struct imx219 *imx219 = 716 container_of(ctrl->handler, struct imx219, ctrl_handler); 717 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); 718 int ret; 719 720 if (ctrl->id == V4L2_CID_VBLANK) { 721 int exposure_max, exposure_def; 722 723 /* Update max exposure while meeting expected vblanking */ 724 exposure_max = imx219->mode->height + ctrl->val - 4; 725 exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ? 726 exposure_max : IMX219_EXPOSURE_DEFAULT; 727 __v4l2_ctrl_modify_range(imx219->exposure, 728 imx219->exposure->minimum, 729 exposure_max, imx219->exposure->step, 730 exposure_def); 731 } 732 733 /* 734 * Applying V4L2 control value only happens 735 * when power is up for streaming 736 */ 737 if (pm_runtime_get_if_in_use(&client->dev) == 0) 738 return 0; 739 740 switch (ctrl->id) { 741 case V4L2_CID_ANALOGUE_GAIN: 742 ret = imx219_write_reg(imx219, IMX219_REG_ANALOG_GAIN, 743 IMX219_REG_VALUE_08BIT, ctrl->val); 744 break; 745 case V4L2_CID_EXPOSURE: 746 ret = imx219_write_reg(imx219, IMX219_REG_EXPOSURE, 747 IMX219_REG_VALUE_16BIT, ctrl->val); 748 break; 749 case V4L2_CID_DIGITAL_GAIN: 750 ret = imx219_write_reg(imx219, IMX219_REG_DIGITAL_GAIN, 751 IMX219_REG_VALUE_16BIT, ctrl->val); 752 break; 753 case V4L2_CID_TEST_PATTERN: 754 ret = imx219_write_reg(imx219, IMX219_REG_TEST_PATTERN, 755 IMX219_REG_VALUE_16BIT, 756 imx219_test_pattern_val[ctrl->val]); 757 break; 758 case V4L2_CID_HFLIP: 759 case V4L2_CID_VFLIP: 760 ret = imx219_write_reg(imx219, IMX219_REG_ORIENTATION, 1, 761 imx219->hflip->val | 762 imx219->vflip->val << 1); 763 break; 764 case V4L2_CID_VBLANK: 765 ret = imx219_write_reg(imx219, IMX219_REG_VTS, 766 IMX219_REG_VALUE_16BIT, 767 imx219->mode->height + ctrl->val); 768 break; 769 case V4L2_CID_TEST_PATTERN_RED: 770 ret = imx219_write_reg(imx219, IMX219_REG_TESTP_RED, 771 IMX219_REG_VALUE_16BIT, ctrl->val); 772 break; 773 case V4L2_CID_TEST_PATTERN_GREENR: 774 ret = imx219_write_reg(imx219, IMX219_REG_TESTP_GREENR, 775 IMX219_REG_VALUE_16BIT, ctrl->val); 776 break; 777 case V4L2_CID_TEST_PATTERN_BLUE: 778 ret = imx219_write_reg(imx219, IMX219_REG_TESTP_BLUE, 779 IMX219_REG_VALUE_16BIT, ctrl->val); 780 break; 781 case V4L2_CID_TEST_PATTERN_GREENB: 782 ret = imx219_write_reg(imx219, IMX219_REG_TESTP_GREENB, 783 IMX219_REG_VALUE_16BIT, ctrl->val); 784 break; 785 default: 786 dev_info(&client->dev, 787 "ctrl(id:0x%x,val:0x%x) is not handled\n", 788 ctrl->id, ctrl->val); 789 ret = -EINVAL; 790 break; 791 } 792 793 pm_runtime_put(&client->dev); 794 795 return ret; 796 } 797 798 static const struct v4l2_ctrl_ops imx219_ctrl_ops = { 799 .s_ctrl = imx219_set_ctrl, 800 }; 801 802 static int imx219_enum_mbus_code(struct v4l2_subdev *sd, 803 struct v4l2_subdev_pad_config *cfg, 804 struct v4l2_subdev_mbus_code_enum *code) 805 { 806 struct imx219 *imx219 = to_imx219(sd); 807 808 if (code->index >= (ARRAY_SIZE(codes) / 4)) 809 return -EINVAL; 810 811 code->code = imx219_get_format_code(imx219, codes[code->index * 4]); 812 813 return 0; 814 } 815 816 static int imx219_enum_frame_size(struct v4l2_subdev *sd, 817 struct v4l2_subdev_pad_config *cfg, 818 struct v4l2_subdev_frame_size_enum *fse) 819 { 820 struct imx219 *imx219 = to_imx219(sd); 821 822 if (fse->index >= ARRAY_SIZE(supported_modes)) 823 return -EINVAL; 824 825 if (fse->code != imx219_get_format_code(imx219, fse->code)) 826 return -EINVAL; 827 828 fse->min_width = supported_modes[fse->index].width; 829 fse->max_width = fse->min_width; 830 fse->min_height = supported_modes[fse->index].height; 831 fse->max_height = fse->min_height; 832 833 return 0; 834 } 835 836 static void imx219_reset_colorspace(struct v4l2_mbus_framefmt *fmt) 837 { 838 fmt->colorspace = V4L2_COLORSPACE_SRGB; 839 fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace); 840 fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, 841 fmt->colorspace, 842 fmt->ycbcr_enc); 843 fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace); 844 } 845 846 static void imx219_update_pad_format(struct imx219 *imx219, 847 const struct imx219_mode *mode, 848 struct v4l2_subdev_format *fmt) 849 { 850 fmt->format.width = mode->width; 851 fmt->format.height = mode->height; 852 fmt->format.field = V4L2_FIELD_NONE; 853 imx219_reset_colorspace(&fmt->format); 854 } 855 856 static int __imx219_get_pad_format(struct imx219 *imx219, 857 struct v4l2_subdev_pad_config *cfg, 858 struct v4l2_subdev_format *fmt) 859 { 860 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 861 struct v4l2_mbus_framefmt *try_fmt = 862 v4l2_subdev_get_try_format(&imx219->sd, cfg, fmt->pad); 863 /* update the code which could change due to vflip or hflip: */ 864 try_fmt->code = imx219_get_format_code(imx219, try_fmt->code); 865 fmt->format = *try_fmt; 866 } else { 867 imx219_update_pad_format(imx219, imx219->mode, fmt); 868 fmt->format.code = imx219_get_format_code(imx219, 869 imx219->fmt.code); 870 } 871 872 return 0; 873 } 874 875 static int imx219_get_pad_format(struct v4l2_subdev *sd, 876 struct v4l2_subdev_pad_config *cfg, 877 struct v4l2_subdev_format *fmt) 878 { 879 struct imx219 *imx219 = to_imx219(sd); 880 int ret; 881 882 mutex_lock(&imx219->mutex); 883 ret = __imx219_get_pad_format(imx219, cfg, fmt); 884 mutex_unlock(&imx219->mutex); 885 886 return ret; 887 } 888 889 static int imx219_set_pad_format(struct v4l2_subdev *sd, 890 struct v4l2_subdev_pad_config *cfg, 891 struct v4l2_subdev_format *fmt) 892 { 893 struct imx219 *imx219 = to_imx219(sd); 894 const struct imx219_mode *mode; 895 struct v4l2_mbus_framefmt *framefmt; 896 int exposure_max, exposure_def, hblank; 897 unsigned int i; 898 899 mutex_lock(&imx219->mutex); 900 901 for (i = 0; i < ARRAY_SIZE(codes); i++) 902 if (codes[i] == fmt->format.code) 903 break; 904 if (i >= ARRAY_SIZE(codes)) 905 i = 0; 906 907 /* Bayer order varies with flips */ 908 fmt->format.code = imx219_get_format_code(imx219, codes[i]); 909 910 mode = v4l2_find_nearest_size(supported_modes, 911 ARRAY_SIZE(supported_modes), 912 width, height, 913 fmt->format.width, fmt->format.height); 914 imx219_update_pad_format(imx219, mode, fmt); 915 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 916 framefmt = v4l2_subdev_get_try_format(sd, cfg, fmt->pad); 917 *framefmt = fmt->format; 918 } else if (imx219->mode != mode || 919 imx219->fmt.code != fmt->format.code) { 920 imx219->fmt = fmt->format; 921 imx219->mode = mode; 922 /* Update limits and set FPS to default */ 923 __v4l2_ctrl_modify_range(imx219->vblank, IMX219_VBLANK_MIN, 924 IMX219_VTS_MAX - mode->height, 1, 925 mode->vts_def - mode->height); 926 __v4l2_ctrl_s_ctrl(imx219->vblank, 927 mode->vts_def - mode->height); 928 /* Update max exposure while meeting expected vblanking */ 929 exposure_max = mode->vts_def - 4; 930 exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ? 931 exposure_max : IMX219_EXPOSURE_DEFAULT; 932 __v4l2_ctrl_modify_range(imx219->exposure, 933 imx219->exposure->minimum, 934 exposure_max, imx219->exposure->step, 935 exposure_def); 936 /* 937 * Currently PPL is fixed to IMX219_PPL_DEFAULT, so hblank 938 * depends on mode->width only, and is not changeble in any 939 * way other than changing the mode. 940 */ 941 hblank = IMX219_PPL_DEFAULT - mode->width; 942 __v4l2_ctrl_modify_range(imx219->hblank, hblank, hblank, 1, 943 hblank); 944 } 945 946 mutex_unlock(&imx219->mutex); 947 948 return 0; 949 } 950 951 static int imx219_set_framefmt(struct imx219 *imx219) 952 { 953 switch (imx219->fmt.code) { 954 case MEDIA_BUS_FMT_SRGGB8_1X8: 955 case MEDIA_BUS_FMT_SGRBG8_1X8: 956 case MEDIA_BUS_FMT_SGBRG8_1X8: 957 case MEDIA_BUS_FMT_SBGGR8_1X8: 958 return imx219_write_regs(imx219, raw8_framefmt_regs, 959 ARRAY_SIZE(raw8_framefmt_regs)); 960 961 case MEDIA_BUS_FMT_SRGGB10_1X10: 962 case MEDIA_BUS_FMT_SGRBG10_1X10: 963 case MEDIA_BUS_FMT_SGBRG10_1X10: 964 case MEDIA_BUS_FMT_SBGGR10_1X10: 965 return imx219_write_regs(imx219, raw10_framefmt_regs, 966 ARRAY_SIZE(raw10_framefmt_regs)); 967 } 968 969 return -EINVAL; 970 } 971 972 static const struct v4l2_rect * 973 __imx219_get_pad_crop(struct imx219 *imx219, struct v4l2_subdev_pad_config *cfg, 974 unsigned int pad, enum v4l2_subdev_format_whence which) 975 { 976 switch (which) { 977 case V4L2_SUBDEV_FORMAT_TRY: 978 return v4l2_subdev_get_try_crop(&imx219->sd, cfg, pad); 979 case V4L2_SUBDEV_FORMAT_ACTIVE: 980 return &imx219->mode->crop; 981 } 982 983 return NULL; 984 } 985 986 static int imx219_get_selection(struct v4l2_subdev *sd, 987 struct v4l2_subdev_pad_config *cfg, 988 struct v4l2_subdev_selection *sel) 989 { 990 switch (sel->target) { 991 case V4L2_SEL_TGT_CROP: { 992 struct imx219 *imx219 = to_imx219(sd); 993 994 mutex_lock(&imx219->mutex); 995 sel->r = *__imx219_get_pad_crop(imx219, cfg, sel->pad, 996 sel->which); 997 mutex_unlock(&imx219->mutex); 998 999 return 0; 1000 } 1001 1002 case V4L2_SEL_TGT_NATIVE_SIZE: 1003 sel->r.top = 0; 1004 sel->r.left = 0; 1005 sel->r.width = IMX219_NATIVE_WIDTH; 1006 sel->r.height = IMX219_NATIVE_HEIGHT; 1007 1008 return 0; 1009 1010 case V4L2_SEL_TGT_CROP_DEFAULT: 1011 sel->r.top = IMX219_PIXEL_ARRAY_TOP; 1012 sel->r.left = IMX219_PIXEL_ARRAY_LEFT; 1013 sel->r.width = IMX219_PIXEL_ARRAY_WIDTH; 1014 sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT; 1015 1016 return 0; 1017 } 1018 1019 return -EINVAL; 1020 } 1021 1022 static int imx219_start_streaming(struct imx219 *imx219) 1023 { 1024 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); 1025 const struct imx219_reg_list *reg_list; 1026 int ret; 1027 1028 /* Apply default values of current mode */ 1029 reg_list = &imx219->mode->reg_list; 1030 ret = imx219_write_regs(imx219, reg_list->regs, reg_list->num_of_regs); 1031 if (ret) { 1032 dev_err(&client->dev, "%s failed to set mode\n", __func__); 1033 return ret; 1034 } 1035 1036 ret = imx219_set_framefmt(imx219); 1037 if (ret) { 1038 dev_err(&client->dev, "%s failed to set frame format: %d\n", 1039 __func__, ret); 1040 return ret; 1041 } 1042 1043 /* Apply customized values from user */ 1044 ret = __v4l2_ctrl_handler_setup(imx219->sd.ctrl_handler); 1045 if (ret) 1046 return ret; 1047 1048 /* set stream on register */ 1049 return imx219_write_reg(imx219, IMX219_REG_MODE_SELECT, 1050 IMX219_REG_VALUE_08BIT, IMX219_MODE_STREAMING); 1051 } 1052 1053 static void imx219_stop_streaming(struct imx219 *imx219) 1054 { 1055 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); 1056 int ret; 1057 1058 /* set stream off register */ 1059 ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT, 1060 IMX219_REG_VALUE_08BIT, IMX219_MODE_STANDBY); 1061 if (ret) 1062 dev_err(&client->dev, "%s failed to set stream\n", __func__); 1063 } 1064 1065 static int imx219_set_stream(struct v4l2_subdev *sd, int enable) 1066 { 1067 struct imx219 *imx219 = to_imx219(sd); 1068 struct i2c_client *client = v4l2_get_subdevdata(sd); 1069 int ret = 0; 1070 1071 mutex_lock(&imx219->mutex); 1072 if (imx219->streaming == enable) { 1073 mutex_unlock(&imx219->mutex); 1074 return 0; 1075 } 1076 1077 if (enable) { 1078 ret = pm_runtime_get_sync(&client->dev); 1079 if (ret < 0) { 1080 pm_runtime_put_noidle(&client->dev); 1081 goto err_unlock; 1082 } 1083 1084 /* 1085 * Apply default & customized values 1086 * and then start streaming. 1087 */ 1088 ret = imx219_start_streaming(imx219); 1089 if (ret) 1090 goto err_rpm_put; 1091 } else { 1092 imx219_stop_streaming(imx219); 1093 pm_runtime_put(&client->dev); 1094 } 1095 1096 imx219->streaming = enable; 1097 1098 /* vflip and hflip cannot change during streaming */ 1099 __v4l2_ctrl_grab(imx219->vflip, enable); 1100 __v4l2_ctrl_grab(imx219->hflip, enable); 1101 1102 mutex_unlock(&imx219->mutex); 1103 1104 return ret; 1105 1106 err_rpm_put: 1107 pm_runtime_put(&client->dev); 1108 err_unlock: 1109 mutex_unlock(&imx219->mutex); 1110 1111 return ret; 1112 } 1113 1114 /* Power/clock management functions */ 1115 static int imx219_power_on(struct device *dev) 1116 { 1117 struct i2c_client *client = to_i2c_client(dev); 1118 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1119 struct imx219 *imx219 = to_imx219(sd); 1120 int ret; 1121 1122 ret = regulator_bulk_enable(IMX219_NUM_SUPPLIES, 1123 imx219->supplies); 1124 if (ret) { 1125 dev_err(&client->dev, "%s: failed to enable regulators\n", 1126 __func__); 1127 return ret; 1128 } 1129 1130 ret = clk_prepare_enable(imx219->xclk); 1131 if (ret) { 1132 dev_err(&client->dev, "%s: failed to enable clock\n", 1133 __func__); 1134 goto reg_off; 1135 } 1136 1137 gpiod_set_value_cansleep(imx219->reset_gpio, 1); 1138 usleep_range(IMX219_XCLR_MIN_DELAY_US, 1139 IMX219_XCLR_MIN_DELAY_US + IMX219_XCLR_DELAY_RANGE_US); 1140 1141 return 0; 1142 1143 reg_off: 1144 regulator_bulk_disable(IMX219_NUM_SUPPLIES, imx219->supplies); 1145 1146 return ret; 1147 } 1148 1149 static int imx219_power_off(struct device *dev) 1150 { 1151 struct i2c_client *client = to_i2c_client(dev); 1152 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1153 struct imx219 *imx219 = to_imx219(sd); 1154 1155 gpiod_set_value_cansleep(imx219->reset_gpio, 0); 1156 regulator_bulk_disable(IMX219_NUM_SUPPLIES, imx219->supplies); 1157 clk_disable_unprepare(imx219->xclk); 1158 1159 return 0; 1160 } 1161 1162 static int __maybe_unused imx219_suspend(struct device *dev) 1163 { 1164 struct i2c_client *client = to_i2c_client(dev); 1165 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1166 struct imx219 *imx219 = to_imx219(sd); 1167 1168 if (imx219->streaming) 1169 imx219_stop_streaming(imx219); 1170 1171 return 0; 1172 } 1173 1174 static int __maybe_unused imx219_resume(struct device *dev) 1175 { 1176 struct i2c_client *client = to_i2c_client(dev); 1177 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1178 struct imx219 *imx219 = to_imx219(sd); 1179 int ret; 1180 1181 if (imx219->streaming) { 1182 ret = imx219_start_streaming(imx219); 1183 if (ret) 1184 goto error; 1185 } 1186 1187 return 0; 1188 1189 error: 1190 imx219_stop_streaming(imx219); 1191 imx219->streaming = false; 1192 1193 return ret; 1194 } 1195 1196 static int imx219_get_regulators(struct imx219 *imx219) 1197 { 1198 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); 1199 unsigned int i; 1200 1201 for (i = 0; i < IMX219_NUM_SUPPLIES; i++) 1202 imx219->supplies[i].supply = imx219_supply_name[i]; 1203 1204 return devm_regulator_bulk_get(&client->dev, 1205 IMX219_NUM_SUPPLIES, 1206 imx219->supplies); 1207 } 1208 1209 /* Verify chip ID */ 1210 static int imx219_identify_module(struct imx219 *imx219) 1211 { 1212 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); 1213 int ret; 1214 u32 val; 1215 1216 ret = imx219_read_reg(imx219, IMX219_REG_CHIP_ID, 1217 IMX219_REG_VALUE_16BIT, &val); 1218 if (ret) { 1219 dev_err(&client->dev, "failed to read chip id %x\n", 1220 IMX219_CHIP_ID); 1221 return ret; 1222 } 1223 1224 if (val != IMX219_CHIP_ID) { 1225 dev_err(&client->dev, "chip id mismatch: %x!=%x\n", 1226 IMX219_CHIP_ID, val); 1227 return -EIO; 1228 } 1229 1230 return 0; 1231 } 1232 1233 static const struct v4l2_subdev_core_ops imx219_core_ops = { 1234 .subscribe_event = v4l2_ctrl_subdev_subscribe_event, 1235 .unsubscribe_event = v4l2_event_subdev_unsubscribe, 1236 }; 1237 1238 static const struct v4l2_subdev_video_ops imx219_video_ops = { 1239 .s_stream = imx219_set_stream, 1240 }; 1241 1242 static const struct v4l2_subdev_pad_ops imx219_pad_ops = { 1243 .enum_mbus_code = imx219_enum_mbus_code, 1244 .get_fmt = imx219_get_pad_format, 1245 .set_fmt = imx219_set_pad_format, 1246 .get_selection = imx219_get_selection, 1247 .enum_frame_size = imx219_enum_frame_size, 1248 }; 1249 1250 static const struct v4l2_subdev_ops imx219_subdev_ops = { 1251 .core = &imx219_core_ops, 1252 .video = &imx219_video_ops, 1253 .pad = &imx219_pad_ops, 1254 }; 1255 1256 static const struct v4l2_subdev_internal_ops imx219_internal_ops = { 1257 .open = imx219_open, 1258 }; 1259 1260 /* Initialize control handlers */ 1261 static int imx219_init_controls(struct imx219 *imx219) 1262 { 1263 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); 1264 struct v4l2_ctrl_handler *ctrl_hdlr; 1265 unsigned int height = imx219->mode->height; 1266 struct v4l2_fwnode_device_properties props; 1267 int exposure_max, exposure_def, hblank; 1268 int i, ret; 1269 1270 ctrl_hdlr = &imx219->ctrl_handler; 1271 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 11); 1272 if (ret) 1273 return ret; 1274 1275 mutex_init(&imx219->mutex); 1276 ctrl_hdlr->lock = &imx219->mutex; 1277 1278 /* By default, PIXEL_RATE is read only */ 1279 imx219->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, 1280 V4L2_CID_PIXEL_RATE, 1281 IMX219_PIXEL_RATE, 1282 IMX219_PIXEL_RATE, 1, 1283 IMX219_PIXEL_RATE); 1284 1285 /* Initial vblank/hblank/exposure parameters based on current mode */ 1286 imx219->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, 1287 V4L2_CID_VBLANK, IMX219_VBLANK_MIN, 1288 IMX219_VTS_MAX - height, 1, 1289 imx219->mode->vts_def - height); 1290 hblank = IMX219_PPL_DEFAULT - imx219->mode->width; 1291 imx219->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, 1292 V4L2_CID_HBLANK, hblank, hblank, 1293 1, hblank); 1294 if (imx219->hblank) 1295 imx219->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1296 exposure_max = imx219->mode->vts_def - 4; 1297 exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ? 1298 exposure_max : IMX219_EXPOSURE_DEFAULT; 1299 imx219->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, 1300 V4L2_CID_EXPOSURE, 1301 IMX219_EXPOSURE_MIN, exposure_max, 1302 IMX219_EXPOSURE_STEP, 1303 exposure_def); 1304 1305 v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, 1306 IMX219_ANA_GAIN_MIN, IMX219_ANA_GAIN_MAX, 1307 IMX219_ANA_GAIN_STEP, IMX219_ANA_GAIN_DEFAULT); 1308 1309 v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_DIGITAL_GAIN, 1310 IMX219_DGTL_GAIN_MIN, IMX219_DGTL_GAIN_MAX, 1311 IMX219_DGTL_GAIN_STEP, IMX219_DGTL_GAIN_DEFAULT); 1312 1313 imx219->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, 1314 V4L2_CID_HFLIP, 0, 1, 1, 0); 1315 if (imx219->hflip) 1316 imx219->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; 1317 1318 imx219->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, 1319 V4L2_CID_VFLIP, 0, 1, 1, 0); 1320 if (imx219->vflip) 1321 imx219->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; 1322 1323 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx219_ctrl_ops, 1324 V4L2_CID_TEST_PATTERN, 1325 ARRAY_SIZE(imx219_test_pattern_menu) - 1, 1326 0, 0, imx219_test_pattern_menu); 1327 for (i = 0; i < 4; i++) { 1328 /* 1329 * The assumption is that 1330 * V4L2_CID_TEST_PATTERN_GREENR == V4L2_CID_TEST_PATTERN_RED + 1 1331 * V4L2_CID_TEST_PATTERN_BLUE == V4L2_CID_TEST_PATTERN_RED + 2 1332 * V4L2_CID_TEST_PATTERN_GREENB == V4L2_CID_TEST_PATTERN_RED + 3 1333 */ 1334 v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, 1335 V4L2_CID_TEST_PATTERN_RED + i, 1336 IMX219_TESTP_COLOUR_MIN, 1337 IMX219_TESTP_COLOUR_MAX, 1338 IMX219_TESTP_COLOUR_STEP, 1339 IMX219_TESTP_COLOUR_MAX); 1340 /* The "Solid color" pattern is white by default */ 1341 } 1342 1343 if (ctrl_hdlr->error) { 1344 ret = ctrl_hdlr->error; 1345 dev_err(&client->dev, "%s control init failed (%d)\n", 1346 __func__, ret); 1347 goto error; 1348 } 1349 1350 ret = v4l2_fwnode_device_parse(&client->dev, &props); 1351 if (ret) 1352 goto error; 1353 1354 ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx219_ctrl_ops, 1355 &props); 1356 if (ret) 1357 goto error; 1358 1359 imx219->sd.ctrl_handler = ctrl_hdlr; 1360 1361 return 0; 1362 1363 error: 1364 v4l2_ctrl_handler_free(ctrl_hdlr); 1365 mutex_destroy(&imx219->mutex); 1366 1367 return ret; 1368 } 1369 1370 static void imx219_free_controls(struct imx219 *imx219) 1371 { 1372 v4l2_ctrl_handler_free(imx219->sd.ctrl_handler); 1373 mutex_destroy(&imx219->mutex); 1374 } 1375 1376 static int imx219_check_hwcfg(struct device *dev) 1377 { 1378 struct fwnode_handle *endpoint; 1379 struct v4l2_fwnode_endpoint ep_cfg = { 1380 .bus_type = V4L2_MBUS_CSI2_DPHY 1381 }; 1382 int ret = -EINVAL; 1383 1384 endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL); 1385 if (!endpoint) { 1386 dev_err(dev, "endpoint node not found\n"); 1387 return -EINVAL; 1388 } 1389 1390 if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg)) { 1391 dev_err(dev, "could not parse endpoint\n"); 1392 goto error_out; 1393 } 1394 1395 /* Check the number of MIPI CSI2 data lanes */ 1396 if (ep_cfg.bus.mipi_csi2.num_data_lanes != 2) { 1397 dev_err(dev, "only 2 data lanes are currently supported\n"); 1398 goto error_out; 1399 } 1400 1401 /* Check the link frequency set in device tree */ 1402 if (!ep_cfg.nr_of_link_frequencies) { 1403 dev_err(dev, "link-frequency property not found in DT\n"); 1404 goto error_out; 1405 } 1406 1407 if (ep_cfg.nr_of_link_frequencies != 1 || 1408 ep_cfg.link_frequencies[0] != IMX219_DEFAULT_LINK_FREQ) { 1409 dev_err(dev, "Link frequency not supported: %lld\n", 1410 ep_cfg.link_frequencies[0]); 1411 goto error_out; 1412 } 1413 1414 ret = 0; 1415 1416 error_out: 1417 v4l2_fwnode_endpoint_free(&ep_cfg); 1418 fwnode_handle_put(endpoint); 1419 1420 return ret; 1421 } 1422 1423 static int imx219_probe(struct i2c_client *client) 1424 { 1425 struct device *dev = &client->dev; 1426 struct imx219 *imx219; 1427 int ret; 1428 1429 imx219 = devm_kzalloc(&client->dev, sizeof(*imx219), GFP_KERNEL); 1430 if (!imx219) 1431 return -ENOMEM; 1432 1433 v4l2_i2c_subdev_init(&imx219->sd, client, &imx219_subdev_ops); 1434 1435 /* Check the hardware configuration in device tree */ 1436 if (imx219_check_hwcfg(dev)) 1437 return -EINVAL; 1438 1439 /* Get system clock (xclk) */ 1440 imx219->xclk = devm_clk_get(dev, NULL); 1441 if (IS_ERR(imx219->xclk)) { 1442 dev_err(dev, "failed to get xclk\n"); 1443 return PTR_ERR(imx219->xclk); 1444 } 1445 1446 imx219->xclk_freq = clk_get_rate(imx219->xclk); 1447 if (imx219->xclk_freq != IMX219_XCLK_FREQ) { 1448 dev_err(dev, "xclk frequency not supported: %d Hz\n", 1449 imx219->xclk_freq); 1450 return -EINVAL; 1451 } 1452 1453 ret = imx219_get_regulators(imx219); 1454 if (ret) { 1455 dev_err(dev, "failed to get regulators\n"); 1456 return ret; 1457 } 1458 1459 /* Request optional enable pin */ 1460 imx219->reset_gpio = devm_gpiod_get_optional(dev, "reset", 1461 GPIOD_OUT_HIGH); 1462 1463 /* 1464 * The sensor must be powered for imx219_identify_module() 1465 * to be able to read the CHIP_ID register 1466 */ 1467 ret = imx219_power_on(dev); 1468 if (ret) 1469 return ret; 1470 1471 ret = imx219_identify_module(imx219); 1472 if (ret) 1473 goto error_power_off; 1474 1475 /* Set default mode to max resolution */ 1476 imx219->mode = &supported_modes[0]; 1477 1478 /* sensor doesn't enter LP-11 state upon power up until and unless 1479 * streaming is started, so upon power up switch the modes to: 1480 * streaming -> standby 1481 */ 1482 ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT, 1483 IMX219_REG_VALUE_08BIT, IMX219_MODE_STREAMING); 1484 if (ret < 0) 1485 goto error_power_off; 1486 usleep_range(100, 110); 1487 1488 /* put sensor back to standby mode */ 1489 ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT, 1490 IMX219_REG_VALUE_08BIT, IMX219_MODE_STANDBY); 1491 if (ret < 0) 1492 goto error_power_off; 1493 usleep_range(100, 110); 1494 1495 ret = imx219_init_controls(imx219); 1496 if (ret) 1497 goto error_power_off; 1498 1499 /* Initialize subdev */ 1500 imx219->sd.internal_ops = &imx219_internal_ops; 1501 imx219->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1502 imx219->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 1503 1504 /* Initialize source pad */ 1505 imx219->pad.flags = MEDIA_PAD_FL_SOURCE; 1506 1507 /* Initialize default format */ 1508 imx219_set_default_format(imx219); 1509 1510 ret = media_entity_pads_init(&imx219->sd.entity, 1, &imx219->pad); 1511 if (ret) { 1512 dev_err(dev, "failed to init entity pads: %d\n", ret); 1513 goto error_handler_free; 1514 } 1515 1516 ret = v4l2_async_register_subdev_sensor_common(&imx219->sd); 1517 if (ret < 0) { 1518 dev_err(dev, "failed to register sensor sub-device: %d\n", ret); 1519 goto error_media_entity; 1520 } 1521 1522 /* Enable runtime PM and turn off the device */ 1523 pm_runtime_set_active(dev); 1524 pm_runtime_enable(dev); 1525 pm_runtime_idle(dev); 1526 1527 return 0; 1528 1529 error_media_entity: 1530 media_entity_cleanup(&imx219->sd.entity); 1531 1532 error_handler_free: 1533 imx219_free_controls(imx219); 1534 1535 error_power_off: 1536 imx219_power_off(dev); 1537 1538 return ret; 1539 } 1540 1541 static int imx219_remove(struct i2c_client *client) 1542 { 1543 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1544 struct imx219 *imx219 = to_imx219(sd); 1545 1546 v4l2_async_unregister_subdev(sd); 1547 media_entity_cleanup(&sd->entity); 1548 imx219_free_controls(imx219); 1549 1550 pm_runtime_disable(&client->dev); 1551 if (!pm_runtime_status_suspended(&client->dev)) 1552 imx219_power_off(&client->dev); 1553 pm_runtime_set_suspended(&client->dev); 1554 1555 return 0; 1556 } 1557 1558 static const struct of_device_id imx219_dt_ids[] = { 1559 { .compatible = "sony,imx219" }, 1560 { /* sentinel */ } 1561 }; 1562 MODULE_DEVICE_TABLE(of, imx219_dt_ids); 1563 1564 static const struct dev_pm_ops imx219_pm_ops = { 1565 SET_SYSTEM_SLEEP_PM_OPS(imx219_suspend, imx219_resume) 1566 SET_RUNTIME_PM_OPS(imx219_power_off, imx219_power_on, NULL) 1567 }; 1568 1569 static struct i2c_driver imx219_i2c_driver = { 1570 .driver = { 1571 .name = "imx219", 1572 .of_match_table = imx219_dt_ids, 1573 .pm = &imx219_pm_ops, 1574 }, 1575 .probe_new = imx219_probe, 1576 .remove = imx219_remove, 1577 }; 1578 1579 module_i2c_driver(imx219_i2c_driver); 1580 1581 MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com"); 1582 MODULE_DESCRIPTION("Sony IMX219 sensor driver"); 1583 MODULE_LICENSE("GPL v2"); 1584