1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Sony imx334 sensor driver 4 * 5 * Copyright (C) 2021 Intel Corporation 6 */ 7 #include <asm/unaligned.h> 8 9 #include <linux/clk.h> 10 #include <linux/delay.h> 11 #include <linux/i2c.h> 12 #include <linux/module.h> 13 #include <linux/pm_runtime.h> 14 15 #include <media/v4l2-ctrls.h> 16 #include <media/v4l2-fwnode.h> 17 #include <media/v4l2-subdev.h> 18 19 /* Streaming Mode */ 20 #define IMX334_REG_MODE_SELECT 0x3000 21 #define IMX334_MODE_STANDBY 0x01 22 #define IMX334_MODE_STREAMING 0x00 23 24 /* Lines per frame */ 25 #define IMX334_REG_LPFR 0x3030 26 27 /* Chip ID */ 28 #define IMX334_REG_ID 0x3044 29 #define IMX334_ID 0x1e 30 31 /* Exposure control */ 32 #define IMX334_REG_SHUTTER 0x3058 33 #define IMX334_EXPOSURE_MIN 1 34 #define IMX334_EXPOSURE_OFFSET 5 35 #define IMX334_EXPOSURE_STEP 1 36 #define IMX334_EXPOSURE_DEFAULT 0x0648 37 38 /* Analog gain control */ 39 #define IMX334_REG_AGAIN 0x30e8 40 #define IMX334_AGAIN_MIN 0 41 #define IMX334_AGAIN_MAX 240 42 #define IMX334_AGAIN_STEP 1 43 #define IMX334_AGAIN_DEFAULT 0 44 45 /* Group hold register */ 46 #define IMX334_REG_HOLD 0x3001 47 48 /* Input clock rate */ 49 #define IMX334_INCLK_RATE 24000000 50 51 /* CSI2 HW configuration */ 52 #define IMX334_LINK_FREQ 891000000 53 #define IMX334_NUM_DATA_LANES 4 54 55 #define IMX334_REG_MIN 0x00 56 #define IMX334_REG_MAX 0xfffff 57 58 /** 59 * struct imx334_reg - imx334 sensor register 60 * @address: Register address 61 * @val: Register value 62 */ 63 struct imx334_reg { 64 u16 address; 65 u8 val; 66 }; 67 68 /** 69 * struct imx334_reg_list - imx334 sensor register list 70 * @num_of_regs: Number of registers in the list 71 * @regs: Pointer to register list 72 */ 73 struct imx334_reg_list { 74 u32 num_of_regs; 75 const struct imx334_reg *regs; 76 }; 77 78 /** 79 * struct imx334_mode - imx334 sensor mode structure 80 * @width: Frame width 81 * @height: Frame height 82 * @hblank: Horizontal blanking in lines 83 * @vblank: Vertical blanking in lines 84 * @vblank_min: Minimal vertical blanking in lines 85 * @vblank_max: Maximum vertical blanking in lines 86 * @pclk: Sensor pixel clock 87 * @link_freq_idx: Link frequency index 88 * @reg_list: Register list for sensor mode 89 */ 90 struct imx334_mode { 91 u32 width; 92 u32 height; 93 u32 hblank; 94 u32 vblank; 95 u32 vblank_min; 96 u32 vblank_max; 97 u64 pclk; 98 u32 link_freq_idx; 99 struct imx334_reg_list reg_list; 100 }; 101 102 /** 103 * struct imx334 - imx334 sensor device structure 104 * @dev: Pointer to generic device 105 * @client: Pointer to i2c client 106 * @sd: V4L2 sub-device 107 * @pad: Media pad. Only one pad supported 108 * @reset_gpio: Sensor reset gpio 109 * @inclk: Sensor input clock 110 * @ctrl_handler: V4L2 control handler 111 * @link_freq_ctrl: Pointer to link frequency control 112 * @pclk_ctrl: Pointer to pixel clock control 113 * @hblank_ctrl: Pointer to horizontal blanking control 114 * @vblank_ctrl: Pointer to vertical blanking control 115 * @exp_ctrl: Pointer to exposure control 116 * @again_ctrl: Pointer to analog gain control 117 * @vblank: Vertical blanking in lines 118 * @cur_mode: Pointer to current selected sensor mode 119 * @mutex: Mutex for serializing sensor controls 120 * @cur_code: current selected format code 121 * @streaming: Flag indicating streaming state 122 */ 123 struct imx334 { 124 struct device *dev; 125 struct i2c_client *client; 126 struct v4l2_subdev sd; 127 struct media_pad pad; 128 struct gpio_desc *reset_gpio; 129 struct clk *inclk; 130 struct v4l2_ctrl_handler ctrl_handler; 131 struct v4l2_ctrl *link_freq_ctrl; 132 struct v4l2_ctrl *pclk_ctrl; 133 struct v4l2_ctrl *hblank_ctrl; 134 struct v4l2_ctrl *vblank_ctrl; 135 struct { 136 struct v4l2_ctrl *exp_ctrl; 137 struct v4l2_ctrl *again_ctrl; 138 }; 139 u32 vblank; 140 const struct imx334_mode *cur_mode; 141 struct mutex mutex; 142 u32 cur_code; 143 bool streaming; 144 }; 145 146 static const s64 link_freq[] = { 147 IMX334_LINK_FREQ, 148 }; 149 150 /* Sensor mode registers for 1920x1080@30fps */ 151 static const struct imx334_reg mode_1920x1080_regs[] = { 152 {0x3000, 0x01}, 153 {0x3018, 0x04}, 154 {0x3030, 0xca}, 155 {0x3031, 0x08}, 156 {0x3032, 0x00}, 157 {0x3034, 0x4c}, 158 {0x3035, 0x04}, 159 {0x302c, 0xf0}, 160 {0x302d, 0x03}, 161 {0x302e, 0x80}, 162 {0x302f, 0x07}, 163 {0x3074, 0xcc}, 164 {0x3075, 0x02}, 165 {0x308e, 0xcd}, 166 {0x308f, 0x02}, 167 {0x3076, 0x38}, 168 {0x3077, 0x04}, 169 {0x3090, 0x38}, 170 {0x3091, 0x04}, 171 {0x3308, 0x38}, 172 {0x3309, 0x04}, 173 {0x30C6, 0x00}, 174 {0x30c7, 0x00}, 175 {0x30ce, 0x00}, 176 {0x30cf, 0x00}, 177 {0x30d8, 0x18}, 178 {0x30d9, 0x0a}, 179 {0x304c, 0x00}, 180 {0x304e, 0x00}, 181 {0x304f, 0x00}, 182 {0x3050, 0x00}, 183 {0x30b6, 0x00}, 184 {0x30b7, 0x00}, 185 {0x3116, 0x08}, 186 {0x3117, 0x00}, 187 {0x31a0, 0x20}, 188 {0x31a1, 0x0f}, 189 {0x300c, 0x3b}, 190 {0x300d, 0x29}, 191 {0x314c, 0x29}, 192 {0x314d, 0x01}, 193 {0x315a, 0x06}, 194 {0x3168, 0xa0}, 195 {0x316a, 0x7e}, 196 {0x319e, 0x02}, 197 {0x3199, 0x00}, 198 {0x319d, 0x00}, 199 {0x31dd, 0x03}, 200 {0x3300, 0x00}, 201 {0x341c, 0xff}, 202 {0x341d, 0x01}, 203 {0x3a01, 0x03}, 204 {0x3a18, 0x7f}, 205 {0x3a19, 0x00}, 206 {0x3a1a, 0x37}, 207 {0x3a1b, 0x00}, 208 {0x3a1c, 0x37}, 209 {0x3a1d, 0x00}, 210 {0x3a1e, 0xf7}, 211 {0x3a1f, 0x00}, 212 {0x3a20, 0x3f}, 213 {0x3a21, 0x00}, 214 {0x3a20, 0x6f}, 215 {0x3a21, 0x00}, 216 {0x3a20, 0x3f}, 217 {0x3a21, 0x00}, 218 {0x3a20, 0x5f}, 219 {0x3a21, 0x00}, 220 {0x3a20, 0x2f}, 221 {0x3a21, 0x00}, 222 {0x3078, 0x02}, 223 {0x3079, 0x00}, 224 {0x307a, 0x00}, 225 {0x307b, 0x00}, 226 {0x3080, 0x02}, 227 {0x3081, 0x00}, 228 {0x3082, 0x00}, 229 {0x3083, 0x00}, 230 {0x3088, 0x02}, 231 {0x3094, 0x00}, 232 {0x3095, 0x00}, 233 {0x3096, 0x00}, 234 {0x309b, 0x02}, 235 {0x309c, 0x00}, 236 {0x309d, 0x00}, 237 {0x309e, 0x00}, 238 {0x30a4, 0x00}, 239 {0x30a5, 0x00}, 240 {0x3288, 0x21}, 241 {0x328a, 0x02}, 242 {0x3414, 0x05}, 243 {0x3416, 0x18}, 244 {0x35Ac, 0x0e}, 245 {0x3648, 0x01}, 246 {0x364a, 0x04}, 247 {0x364c, 0x04}, 248 {0x3678, 0x01}, 249 {0x367c, 0x31}, 250 {0x367e, 0x31}, 251 {0x3708, 0x02}, 252 {0x3714, 0x01}, 253 {0x3715, 0x02}, 254 {0x3716, 0x02}, 255 {0x3717, 0x02}, 256 {0x371c, 0x3d}, 257 {0x371d, 0x3f}, 258 {0x372c, 0x00}, 259 {0x372d, 0x00}, 260 {0x372e, 0x46}, 261 {0x372f, 0x00}, 262 {0x3730, 0x89}, 263 {0x3731, 0x00}, 264 {0x3732, 0x08}, 265 {0x3733, 0x01}, 266 {0x3734, 0xfe}, 267 {0x3735, 0x05}, 268 {0x375d, 0x00}, 269 {0x375e, 0x00}, 270 {0x375f, 0x61}, 271 {0x3760, 0x06}, 272 {0x3768, 0x1b}, 273 {0x3769, 0x1b}, 274 {0x376a, 0x1a}, 275 {0x376b, 0x19}, 276 {0x376c, 0x18}, 277 {0x376d, 0x14}, 278 {0x376e, 0x0f}, 279 {0x3776, 0x00}, 280 {0x3777, 0x00}, 281 {0x3778, 0x46}, 282 {0x3779, 0x00}, 283 {0x377a, 0x08}, 284 {0x377b, 0x01}, 285 {0x377c, 0x45}, 286 {0x377d, 0x01}, 287 {0x377e, 0x23}, 288 {0x377f, 0x02}, 289 {0x3780, 0xd9}, 290 {0x3781, 0x03}, 291 {0x3782, 0xf5}, 292 {0x3783, 0x06}, 293 {0x3784, 0xa5}, 294 {0x3788, 0x0f}, 295 {0x378a, 0xd9}, 296 {0x378b, 0x03}, 297 {0x378c, 0xeb}, 298 {0x378d, 0x05}, 299 {0x378e, 0x87}, 300 {0x378f, 0x06}, 301 {0x3790, 0xf5}, 302 {0x3792, 0x43}, 303 {0x3794, 0x7a}, 304 {0x3796, 0xa1}, 305 {0x37b0, 0x37}, 306 {0x3e04, 0x0e}, 307 {0x30e8, 0x50}, 308 {0x30e9, 0x00}, 309 {0x3e04, 0x0e}, 310 {0x3002, 0x00}, 311 }; 312 313 /* Sensor mode registers for 3840x2160@30fps */ 314 static const struct imx334_reg mode_3840x2160_regs[] = { 315 {0x3000, 0x01}, 316 {0x3002, 0x00}, 317 {0x3018, 0x04}, 318 {0x37b0, 0x36}, 319 {0x304c, 0x00}, 320 {0x300c, 0x3b}, 321 {0x300d, 0x2a}, 322 {0x3034, 0x26}, 323 {0x3035, 0x02}, 324 {0x314c, 0x29}, 325 {0x314d, 0x01}, 326 {0x315a, 0x02}, 327 {0x3168, 0xa0}, 328 {0x316a, 0x7e}, 329 {0x3288, 0x21}, 330 {0x328a, 0x02}, 331 {0x302c, 0x3c}, 332 {0x302d, 0x00}, 333 {0x302e, 0x00}, 334 {0x302f, 0x0f}, 335 {0x3076, 0x70}, 336 {0x3077, 0x08}, 337 {0x3090, 0x70}, 338 {0x3091, 0x08}, 339 {0x30d8, 0x20}, 340 {0x30d9, 0x12}, 341 {0x3308, 0x70}, 342 {0x3309, 0x08}, 343 {0x3414, 0x05}, 344 {0x3416, 0x18}, 345 {0x35ac, 0x0e}, 346 {0x3648, 0x01}, 347 {0x364a, 0x04}, 348 {0x364c, 0x04}, 349 {0x3678, 0x01}, 350 {0x367c, 0x31}, 351 {0x367e, 0x31}, 352 {0x3708, 0x02}, 353 {0x3714, 0x01}, 354 {0x3715, 0x02}, 355 {0x3716, 0x02}, 356 {0x3717, 0x02}, 357 {0x371c, 0x3d}, 358 {0x371d, 0x3f}, 359 {0x372c, 0x00}, 360 {0x372d, 0x00}, 361 {0x372e, 0x46}, 362 {0x372f, 0x00}, 363 {0x3730, 0x89}, 364 {0x3731, 0x00}, 365 {0x3732, 0x08}, 366 {0x3733, 0x01}, 367 {0x3734, 0xfe}, 368 {0x3735, 0x05}, 369 {0x375d, 0x00}, 370 {0x375e, 0x00}, 371 {0x375f, 0x61}, 372 {0x3760, 0x06}, 373 {0x3768, 0x1b}, 374 {0x3769, 0x1b}, 375 {0x376a, 0x1a}, 376 {0x376b, 0x19}, 377 {0x376c, 0x18}, 378 {0x376d, 0x14}, 379 {0x376e, 0x0f}, 380 {0x3776, 0x00}, 381 {0x3777, 0x00}, 382 {0x3778, 0x46}, 383 {0x3779, 0x00}, 384 {0x377a, 0x08}, 385 {0x377b, 0x01}, 386 {0x377c, 0x45}, 387 {0x377d, 0x01}, 388 {0x377e, 0x23}, 389 {0x377f, 0x02}, 390 {0x3780, 0xd9}, 391 {0x3781, 0x03}, 392 {0x3782, 0xf5}, 393 {0x3783, 0x06}, 394 {0x3784, 0xa5}, 395 {0x3788, 0x0f}, 396 {0x378a, 0xd9}, 397 {0x378b, 0x03}, 398 {0x378c, 0xeb}, 399 {0x378d, 0x05}, 400 {0x378e, 0x87}, 401 {0x378f, 0x06}, 402 {0x3790, 0xf5}, 403 {0x3792, 0x43}, 404 {0x3794, 0x7a}, 405 {0x3796, 0xa1}, 406 {0x3e04, 0x0e}, 407 {0x319e, 0x00}, 408 {0x3a00, 0x01}, 409 {0x3a18, 0xbf}, 410 {0x3a19, 0x00}, 411 {0x3a1a, 0x67}, 412 {0x3a1b, 0x00}, 413 {0x3a1c, 0x6f}, 414 {0x3a1d, 0x00}, 415 {0x3a1e, 0xd7}, 416 {0x3a1f, 0x01}, 417 {0x3a20, 0x6f}, 418 {0x3a21, 0x00}, 419 {0x3a22, 0xcf}, 420 {0x3a23, 0x00}, 421 {0x3a24, 0x6f}, 422 {0x3a25, 0x00}, 423 {0x3a26, 0xb7}, 424 {0x3a27, 0x00}, 425 {0x3a28, 0x5f}, 426 {0x3a29, 0x00}, 427 }; 428 429 static const struct imx334_reg raw10_framefmt_regs[] = { 430 {0x3050, 0x00}, 431 {0x319d, 0x00}, 432 {0x341c, 0xff}, 433 {0x341d, 0x01}, 434 }; 435 436 static const struct imx334_reg raw12_framefmt_regs[] = { 437 {0x3050, 0x01}, 438 {0x319d, 0x01}, 439 {0x341c, 0x47}, 440 {0x341d, 0x00}, 441 }; 442 443 static const u32 imx334_mbus_codes[] = { 444 MEDIA_BUS_FMT_SRGGB12_1X12, 445 MEDIA_BUS_FMT_SRGGB10_1X10, 446 }; 447 448 /* Supported sensor mode configurations */ 449 static const struct imx334_mode supported_modes[] = { 450 { 451 .width = 3840, 452 .height = 2160, 453 .hblank = 560, 454 .vblank = 2340, 455 .vblank_min = 90, 456 .vblank_max = 132840, 457 .pclk = 594000000, 458 .link_freq_idx = 0, 459 .reg_list = { 460 .num_of_regs = ARRAY_SIZE(mode_3840x2160_regs), 461 .regs = mode_3840x2160_regs, 462 }, 463 }, { 464 .width = 1920, 465 .height = 1080, 466 .hblank = 2480, 467 .vblank = 1170, 468 .vblank_min = 45, 469 .vblank_max = 132840, 470 .pclk = 297000000, 471 .link_freq_idx = 0, 472 .reg_list = { 473 .num_of_regs = ARRAY_SIZE(mode_1920x1080_regs), 474 .regs = mode_1920x1080_regs, 475 }, 476 }, 477 }; 478 479 /** 480 * to_imx334() - imv334 V4L2 sub-device to imx334 device. 481 * @subdev: pointer to imx334 V4L2 sub-device 482 * 483 * Return: pointer to imx334 device 484 */ 485 static inline struct imx334 *to_imx334(struct v4l2_subdev *subdev) 486 { 487 return container_of(subdev, struct imx334, sd); 488 } 489 490 /** 491 * imx334_read_reg() - Read registers. 492 * @imx334: pointer to imx334 device 493 * @reg: register address 494 * @len: length of bytes to read. Max supported bytes is 4 495 * @val: pointer to register value to be filled. 496 * 497 * Big endian register addresses with little endian values. 498 * 499 * Return: 0 if successful, error code otherwise. 500 */ 501 static int imx334_read_reg(struct imx334 *imx334, u16 reg, u32 len, u32 *val) 502 { 503 struct i2c_client *client = v4l2_get_subdevdata(&imx334->sd); 504 struct i2c_msg msgs[2] = {0}; 505 u8 addr_buf[2] = {0}; 506 u8 data_buf[4] = {0}; 507 int ret; 508 509 if (WARN_ON(len > 4)) 510 return -EINVAL; 511 512 put_unaligned_be16(reg, addr_buf); 513 514 /* Write register address */ 515 msgs[0].addr = client->addr; 516 msgs[0].flags = 0; 517 msgs[0].len = ARRAY_SIZE(addr_buf); 518 msgs[0].buf = addr_buf; 519 520 /* Read data from register */ 521 msgs[1].addr = client->addr; 522 msgs[1].flags = I2C_M_RD; 523 msgs[1].len = len; 524 msgs[1].buf = data_buf; 525 526 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); 527 if (ret != ARRAY_SIZE(msgs)) 528 return -EIO; 529 530 *val = get_unaligned_le32(data_buf); 531 532 return 0; 533 } 534 535 /** 536 * imx334_write_reg() - Write register 537 * @imx334: pointer to imx334 device 538 * @reg: register address 539 * @len: length of bytes. Max supported bytes is 4 540 * @val: register value 541 * 542 * Big endian register addresses with little endian values. 543 * 544 * Return: 0 if successful, error code otherwise. 545 */ 546 static int imx334_write_reg(struct imx334 *imx334, u16 reg, u32 len, u32 val) 547 { 548 struct i2c_client *client = v4l2_get_subdevdata(&imx334->sd); 549 u8 buf[6] = {0}; 550 551 if (WARN_ON(len > 4)) 552 return -EINVAL; 553 554 put_unaligned_be16(reg, buf); 555 put_unaligned_le32(val, buf + 2); 556 if (i2c_master_send(client, buf, len + 2) != len + 2) 557 return -EIO; 558 559 return 0; 560 } 561 562 /** 563 * imx334_write_regs() - Write a list of registers 564 * @imx334: pointer to imx334 device 565 * @regs: list of registers to be written 566 * @len: length of registers array 567 * 568 * Return: 0 if successful, error code otherwise. 569 */ 570 static int imx334_write_regs(struct imx334 *imx334, 571 const struct imx334_reg *regs, u32 len) 572 { 573 unsigned int i; 574 int ret; 575 576 for (i = 0; i < len; i++) { 577 ret = imx334_write_reg(imx334, regs[i].address, 1, regs[i].val); 578 if (ret) 579 return ret; 580 } 581 582 return 0; 583 } 584 585 /** 586 * imx334_update_controls() - Update control ranges based on streaming mode 587 * @imx334: pointer to imx334 device 588 * @mode: pointer to imx334_mode sensor mode 589 * 590 * Return: 0 if successful, error code otherwise. 591 */ 592 static int imx334_update_controls(struct imx334 *imx334, 593 const struct imx334_mode *mode) 594 { 595 int ret; 596 597 ret = __v4l2_ctrl_s_ctrl(imx334->link_freq_ctrl, mode->link_freq_idx); 598 if (ret) 599 return ret; 600 601 ret = __v4l2_ctrl_modify_range(imx334->hblank_ctrl, mode->hblank, 602 mode->hblank, 1, mode->hblank); 603 if (ret) 604 return ret; 605 606 return __v4l2_ctrl_modify_range(imx334->vblank_ctrl, mode->vblank_min, 607 mode->vblank_max, 1, mode->vblank); 608 } 609 610 /** 611 * imx334_update_exp_gain() - Set updated exposure and gain 612 * @imx334: pointer to imx334 device 613 * @exposure: updated exposure value 614 * @gain: updated analog gain value 615 * 616 * Return: 0 if successful, error code otherwise. 617 */ 618 static int imx334_update_exp_gain(struct imx334 *imx334, u32 exposure, u32 gain) 619 { 620 u32 lpfr, shutter; 621 int ret; 622 623 lpfr = imx334->vblank + imx334->cur_mode->height; 624 shutter = lpfr - exposure; 625 626 dev_dbg(imx334->dev, "Set long exp %u analog gain %u sh0 %u lpfr %u", 627 exposure, gain, shutter, lpfr); 628 629 ret = imx334_write_reg(imx334, IMX334_REG_HOLD, 1, 1); 630 if (ret) 631 return ret; 632 633 ret = imx334_write_reg(imx334, IMX334_REG_LPFR, 3, lpfr); 634 if (ret) 635 goto error_release_group_hold; 636 637 ret = imx334_write_reg(imx334, IMX334_REG_SHUTTER, 3, shutter); 638 if (ret) 639 goto error_release_group_hold; 640 641 ret = imx334_write_reg(imx334, IMX334_REG_AGAIN, 1, gain); 642 643 error_release_group_hold: 644 imx334_write_reg(imx334, IMX334_REG_HOLD, 1, 0); 645 646 return ret; 647 } 648 649 /** 650 * imx334_set_ctrl() - Set subdevice control 651 * @ctrl: pointer to v4l2_ctrl structure 652 * 653 * Supported controls: 654 * - V4L2_CID_VBLANK 655 * - cluster controls: 656 * - V4L2_CID_ANALOGUE_GAIN 657 * - V4L2_CID_EXPOSURE 658 * 659 * Return: 0 if successful, error code otherwise. 660 */ 661 static int imx334_set_ctrl(struct v4l2_ctrl *ctrl) 662 { 663 struct imx334 *imx334 = 664 container_of(ctrl->handler, struct imx334, ctrl_handler); 665 u32 analog_gain; 666 u32 exposure; 667 int ret; 668 669 switch (ctrl->id) { 670 case V4L2_CID_VBLANK: 671 imx334->vblank = imx334->vblank_ctrl->val; 672 673 dev_dbg(imx334->dev, "Received vblank %u, new lpfr %u", 674 imx334->vblank, 675 imx334->vblank + imx334->cur_mode->height); 676 677 ret = __v4l2_ctrl_modify_range(imx334->exp_ctrl, 678 IMX334_EXPOSURE_MIN, 679 imx334->vblank + 680 imx334->cur_mode->height - 681 IMX334_EXPOSURE_OFFSET, 682 1, IMX334_EXPOSURE_DEFAULT); 683 break; 684 case V4L2_CID_EXPOSURE: 685 686 /* Set controls only if sensor is in power on state */ 687 if (!pm_runtime_get_if_in_use(imx334->dev)) 688 return 0; 689 690 exposure = ctrl->val; 691 analog_gain = imx334->again_ctrl->val; 692 693 dev_dbg(imx334->dev, "Received exp %u analog gain %u", 694 exposure, analog_gain); 695 696 ret = imx334_update_exp_gain(imx334, exposure, analog_gain); 697 698 pm_runtime_put(imx334->dev); 699 700 break; 701 case V4L2_CID_HBLANK: 702 ret = 0; 703 break; 704 default: 705 dev_err(imx334->dev, "Invalid control %d", ctrl->id); 706 ret = -EINVAL; 707 } 708 709 return ret; 710 } 711 712 /* V4l2 subdevice control ops*/ 713 static const struct v4l2_ctrl_ops imx334_ctrl_ops = { 714 .s_ctrl = imx334_set_ctrl, 715 }; 716 717 static int imx334_get_format_code(struct imx334 *imx334, u32 code) 718 { 719 unsigned int i; 720 721 for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); i++) { 722 if (imx334_mbus_codes[i] == code) 723 return imx334_mbus_codes[i]; 724 } 725 726 return imx334_mbus_codes[0]; 727 } 728 729 /** 730 * imx334_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes 731 * @sd: pointer to imx334 V4L2 sub-device structure 732 * @sd_state: V4L2 sub-device state 733 * @code: V4L2 sub-device code enumeration need to be filled 734 * 735 * Return: 0 if successful, error code otherwise. 736 */ 737 static int imx334_enum_mbus_code(struct v4l2_subdev *sd, 738 struct v4l2_subdev_state *sd_state, 739 struct v4l2_subdev_mbus_code_enum *code) 740 { 741 if (code->index >= ARRAY_SIZE(imx334_mbus_codes)) 742 return -EINVAL; 743 744 code->code = imx334_mbus_codes[code->index]; 745 746 return 0; 747 } 748 749 /** 750 * imx334_enum_frame_size() - Enumerate V4L2 sub-device frame sizes 751 * @sd: pointer to imx334 V4L2 sub-device structure 752 * @sd_state: V4L2 sub-device state 753 * @fsize: V4L2 sub-device size enumeration need to be filled 754 * 755 * Return: 0 if successful, error code otherwise. 756 */ 757 static int imx334_enum_frame_size(struct v4l2_subdev *sd, 758 struct v4l2_subdev_state *sd_state, 759 struct v4l2_subdev_frame_size_enum *fsize) 760 { 761 struct imx334 *imx334 = to_imx334(sd); 762 u32 code; 763 764 if (fsize->index >= ARRAY_SIZE(supported_modes)) 765 return -EINVAL; 766 767 code = imx334_get_format_code(imx334, fsize->code); 768 769 if (fsize->code != code) 770 return -EINVAL; 771 772 fsize->min_width = supported_modes[fsize->index].width; 773 fsize->max_width = fsize->min_width; 774 fsize->min_height = supported_modes[fsize->index].height; 775 fsize->max_height = fsize->min_height; 776 777 return 0; 778 } 779 780 /** 781 * imx334_fill_pad_format() - Fill subdevice pad format 782 * from selected sensor mode 783 * @imx334: pointer to imx334 device 784 * @mode: pointer to imx334_mode sensor mode 785 * @fmt: V4L2 sub-device format need to be filled 786 */ 787 static void imx334_fill_pad_format(struct imx334 *imx334, 788 const struct imx334_mode *mode, 789 struct v4l2_subdev_format *fmt) 790 { 791 fmt->format.width = mode->width; 792 fmt->format.height = mode->height; 793 fmt->format.field = V4L2_FIELD_NONE; 794 fmt->format.colorspace = V4L2_COLORSPACE_RAW; 795 fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; 796 fmt->format.quantization = V4L2_QUANTIZATION_DEFAULT; 797 fmt->format.xfer_func = V4L2_XFER_FUNC_NONE; 798 } 799 800 /** 801 * imx334_get_pad_format() - Get subdevice pad format 802 * @sd: pointer to imx334 V4L2 sub-device structure 803 * @sd_state: V4L2 sub-device state 804 * @fmt: V4L2 sub-device format need to be set 805 * 806 * Return: 0 if successful, error code otherwise. 807 */ 808 static int imx334_get_pad_format(struct v4l2_subdev *sd, 809 struct v4l2_subdev_state *sd_state, 810 struct v4l2_subdev_format *fmt) 811 { 812 struct imx334 *imx334 = to_imx334(sd); 813 814 mutex_lock(&imx334->mutex); 815 816 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 817 struct v4l2_mbus_framefmt *framefmt; 818 819 framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad); 820 fmt->format = *framefmt; 821 } else { 822 fmt->format.code = imx334->cur_code; 823 imx334_fill_pad_format(imx334, imx334->cur_mode, fmt); 824 } 825 826 mutex_unlock(&imx334->mutex); 827 828 return 0; 829 } 830 831 /** 832 * imx334_set_pad_format() - Set subdevice pad format 833 * @sd: pointer to imx334 V4L2 sub-device structure 834 * @sd_state: V4L2 sub-device state 835 * @fmt: V4L2 sub-device format need to be set 836 * 837 * Return: 0 if successful, error code otherwise. 838 */ 839 static int imx334_set_pad_format(struct v4l2_subdev *sd, 840 struct v4l2_subdev_state *sd_state, 841 struct v4l2_subdev_format *fmt) 842 { 843 struct imx334 *imx334 = to_imx334(sd); 844 const struct imx334_mode *mode; 845 int ret = 0; 846 847 mutex_lock(&imx334->mutex); 848 849 mode = v4l2_find_nearest_size(supported_modes, 850 ARRAY_SIZE(supported_modes), 851 width, height, 852 fmt->format.width, fmt->format.height); 853 854 imx334_fill_pad_format(imx334, mode, fmt); 855 fmt->format.code = imx334_get_format_code(imx334, fmt->format.code); 856 857 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 858 struct v4l2_mbus_framefmt *framefmt; 859 860 framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad); 861 *framefmt = fmt->format; 862 } else if (imx334->cur_mode != mode || imx334->cur_code != fmt->format.code) { 863 imx334->cur_code = fmt->format.code; 864 ret = imx334_update_controls(imx334, mode); 865 if (!ret) 866 imx334->cur_mode = mode; 867 } 868 869 mutex_unlock(&imx334->mutex); 870 871 return ret; 872 } 873 874 /** 875 * imx334_init_pad_cfg() - Initialize sub-device pad configuration 876 * @sd: pointer to imx334 V4L2 sub-device structure 877 * @sd_state: V4L2 sub-device state 878 * 879 * Return: 0 if successful, error code otherwise. 880 */ 881 static int imx334_init_pad_cfg(struct v4l2_subdev *sd, 882 struct v4l2_subdev_state *sd_state) 883 { 884 struct imx334 *imx334 = to_imx334(sd); 885 struct v4l2_subdev_format fmt = { 0 }; 886 887 fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; 888 imx334_fill_pad_format(imx334, &supported_modes[0], &fmt); 889 890 return imx334_set_pad_format(sd, sd_state, &fmt); 891 } 892 893 static int imx334_set_framefmt(struct imx334 *imx334) 894 { 895 switch (imx334->cur_code) { 896 case MEDIA_BUS_FMT_SRGGB10_1X10: 897 return imx334_write_regs(imx334, raw10_framefmt_regs, 898 ARRAY_SIZE(raw10_framefmt_regs)); 899 900 case MEDIA_BUS_FMT_SRGGB12_1X12: 901 return imx334_write_regs(imx334, raw12_framefmt_regs, 902 ARRAY_SIZE(raw12_framefmt_regs)); 903 } 904 905 return -EINVAL; 906 } 907 908 /** 909 * imx334_start_streaming() - Start sensor stream 910 * @imx334: pointer to imx334 device 911 * 912 * Return: 0 if successful, error code otherwise. 913 */ 914 static int imx334_start_streaming(struct imx334 *imx334) 915 { 916 const struct imx334_reg_list *reg_list; 917 int ret; 918 919 /* Write sensor mode registers */ 920 reg_list = &imx334->cur_mode->reg_list; 921 ret = imx334_write_regs(imx334, reg_list->regs, 922 reg_list->num_of_regs); 923 if (ret) { 924 dev_err(imx334->dev, "fail to write initial registers"); 925 return ret; 926 } 927 928 ret = imx334_set_framefmt(imx334); 929 if (ret) { 930 dev_err(imx334->dev, "%s failed to set frame format: %d\n", 931 __func__, ret); 932 return ret; 933 } 934 935 /* Setup handler will write actual exposure and gain */ 936 ret = __v4l2_ctrl_handler_setup(imx334->sd.ctrl_handler); 937 if (ret) { 938 dev_err(imx334->dev, "fail to setup handler"); 939 return ret; 940 } 941 942 /* Start streaming */ 943 ret = imx334_write_reg(imx334, IMX334_REG_MODE_SELECT, 944 1, IMX334_MODE_STREAMING); 945 if (ret) { 946 dev_err(imx334->dev, "fail to start streaming"); 947 return ret; 948 } 949 950 return 0; 951 } 952 953 /** 954 * imx334_stop_streaming() - Stop sensor stream 955 * @imx334: pointer to imx334 device 956 * 957 * Return: 0 if successful, error code otherwise. 958 */ 959 static int imx334_stop_streaming(struct imx334 *imx334) 960 { 961 return imx334_write_reg(imx334, IMX334_REG_MODE_SELECT, 962 1, IMX334_MODE_STANDBY); 963 } 964 965 /** 966 * imx334_set_stream() - Enable sensor streaming 967 * @sd: pointer to imx334 subdevice 968 * @enable: set to enable sensor streaming 969 * 970 * Return: 0 if successful, error code otherwise. 971 */ 972 static int imx334_set_stream(struct v4l2_subdev *sd, int enable) 973 { 974 struct imx334 *imx334 = to_imx334(sd); 975 int ret; 976 977 mutex_lock(&imx334->mutex); 978 979 if (imx334->streaming == enable) { 980 mutex_unlock(&imx334->mutex); 981 return 0; 982 } 983 984 if (enable) { 985 ret = pm_runtime_resume_and_get(imx334->dev); 986 if (ret < 0) 987 goto error_unlock; 988 989 ret = imx334_start_streaming(imx334); 990 if (ret) 991 goto error_power_off; 992 } else { 993 imx334_stop_streaming(imx334); 994 pm_runtime_put(imx334->dev); 995 } 996 997 imx334->streaming = enable; 998 999 mutex_unlock(&imx334->mutex); 1000 1001 return 0; 1002 1003 error_power_off: 1004 pm_runtime_put(imx334->dev); 1005 error_unlock: 1006 mutex_unlock(&imx334->mutex); 1007 1008 return ret; 1009 } 1010 1011 /** 1012 * imx334_detect() - Detect imx334 sensor 1013 * @imx334: pointer to imx334 device 1014 * 1015 * Return: 0 if successful, -EIO if sensor id does not match 1016 */ 1017 static int imx334_detect(struct imx334 *imx334) 1018 { 1019 int ret; 1020 u32 val; 1021 1022 ret = imx334_read_reg(imx334, IMX334_REG_ID, 2, &val); 1023 if (ret) 1024 return ret; 1025 1026 if (val != IMX334_ID) { 1027 dev_err(imx334->dev, "chip id mismatch: %x!=%x", 1028 IMX334_ID, val); 1029 return -ENXIO; 1030 } 1031 1032 return 0; 1033 } 1034 1035 /** 1036 * imx334_parse_hw_config() - Parse HW configuration and check if supported 1037 * @imx334: pointer to imx334 device 1038 * 1039 * Return: 0 if successful, error code otherwise. 1040 */ 1041 static int imx334_parse_hw_config(struct imx334 *imx334) 1042 { 1043 struct fwnode_handle *fwnode = dev_fwnode(imx334->dev); 1044 struct v4l2_fwnode_endpoint bus_cfg = { 1045 .bus_type = V4L2_MBUS_CSI2_DPHY 1046 }; 1047 struct fwnode_handle *ep; 1048 unsigned long rate; 1049 int ret; 1050 int i; 1051 1052 if (!fwnode) 1053 return -ENXIO; 1054 1055 /* Request optional reset pin */ 1056 imx334->reset_gpio = devm_gpiod_get_optional(imx334->dev, "reset", 1057 GPIOD_OUT_LOW); 1058 if (IS_ERR(imx334->reset_gpio)) { 1059 dev_err(imx334->dev, "failed to get reset gpio %ld", 1060 PTR_ERR(imx334->reset_gpio)); 1061 return PTR_ERR(imx334->reset_gpio); 1062 } 1063 1064 /* Get sensor input clock */ 1065 imx334->inclk = devm_clk_get(imx334->dev, NULL); 1066 if (IS_ERR(imx334->inclk)) { 1067 dev_err(imx334->dev, "could not get inclk"); 1068 return PTR_ERR(imx334->inclk); 1069 } 1070 1071 rate = clk_get_rate(imx334->inclk); 1072 if (rate != IMX334_INCLK_RATE) { 1073 dev_err(imx334->dev, "inclk frequency mismatch"); 1074 return -EINVAL; 1075 } 1076 1077 ep = fwnode_graph_get_next_endpoint(fwnode, NULL); 1078 if (!ep) 1079 return -ENXIO; 1080 1081 ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); 1082 fwnode_handle_put(ep); 1083 if (ret) 1084 return ret; 1085 1086 if (bus_cfg.bus.mipi_csi2.num_data_lanes != IMX334_NUM_DATA_LANES) { 1087 dev_err(imx334->dev, 1088 "number of CSI2 data lanes %d is not supported", 1089 bus_cfg.bus.mipi_csi2.num_data_lanes); 1090 ret = -EINVAL; 1091 goto done_endpoint_free; 1092 } 1093 1094 if (!bus_cfg.nr_of_link_frequencies) { 1095 dev_err(imx334->dev, "no link frequencies defined"); 1096 ret = -EINVAL; 1097 goto done_endpoint_free; 1098 } 1099 1100 for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) 1101 if (bus_cfg.link_frequencies[i] == IMX334_LINK_FREQ) 1102 goto done_endpoint_free; 1103 1104 ret = -EINVAL; 1105 1106 done_endpoint_free: 1107 v4l2_fwnode_endpoint_free(&bus_cfg); 1108 1109 return ret; 1110 } 1111 1112 /* V4l2 subdevice ops */ 1113 static const struct v4l2_subdev_video_ops imx334_video_ops = { 1114 .s_stream = imx334_set_stream, 1115 }; 1116 1117 static const struct v4l2_subdev_pad_ops imx334_pad_ops = { 1118 .init_cfg = imx334_init_pad_cfg, 1119 .enum_mbus_code = imx334_enum_mbus_code, 1120 .enum_frame_size = imx334_enum_frame_size, 1121 .get_fmt = imx334_get_pad_format, 1122 .set_fmt = imx334_set_pad_format, 1123 }; 1124 1125 static const struct v4l2_subdev_ops imx334_subdev_ops = { 1126 .video = &imx334_video_ops, 1127 .pad = &imx334_pad_ops, 1128 }; 1129 1130 /** 1131 * imx334_power_on() - Sensor power on sequence 1132 * @dev: pointer to i2c device 1133 * 1134 * Return: 0 if successful, error code otherwise. 1135 */ 1136 static int imx334_power_on(struct device *dev) 1137 { 1138 struct v4l2_subdev *sd = dev_get_drvdata(dev); 1139 struct imx334 *imx334 = to_imx334(sd); 1140 int ret; 1141 1142 gpiod_set_value_cansleep(imx334->reset_gpio, 1); 1143 1144 ret = clk_prepare_enable(imx334->inclk); 1145 if (ret) { 1146 dev_err(imx334->dev, "fail to enable inclk"); 1147 goto error_reset; 1148 } 1149 1150 usleep_range(18000, 20000); 1151 1152 return 0; 1153 1154 error_reset: 1155 gpiod_set_value_cansleep(imx334->reset_gpio, 0); 1156 1157 return ret; 1158 } 1159 1160 /** 1161 * imx334_power_off() - Sensor power off sequence 1162 * @dev: pointer to i2c device 1163 * 1164 * Return: 0 if successful, error code otherwise. 1165 */ 1166 static int imx334_power_off(struct device *dev) 1167 { 1168 struct v4l2_subdev *sd = dev_get_drvdata(dev); 1169 struct imx334 *imx334 = to_imx334(sd); 1170 1171 gpiod_set_value_cansleep(imx334->reset_gpio, 0); 1172 1173 clk_disable_unprepare(imx334->inclk); 1174 1175 return 0; 1176 } 1177 1178 /** 1179 * imx334_init_controls() - Initialize sensor subdevice controls 1180 * @imx334: pointer to imx334 device 1181 * 1182 * Return: 0 if successful, error code otherwise. 1183 */ 1184 static int imx334_init_controls(struct imx334 *imx334) 1185 { 1186 struct v4l2_ctrl_handler *ctrl_hdlr = &imx334->ctrl_handler; 1187 const struct imx334_mode *mode = imx334->cur_mode; 1188 u32 lpfr; 1189 int ret; 1190 1191 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 6); 1192 if (ret) 1193 return ret; 1194 1195 /* Serialize controls with sensor device */ 1196 ctrl_hdlr->lock = &imx334->mutex; 1197 1198 /* Initialize exposure and gain */ 1199 lpfr = mode->vblank + mode->height; 1200 imx334->exp_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, 1201 &imx334_ctrl_ops, 1202 V4L2_CID_EXPOSURE, 1203 IMX334_EXPOSURE_MIN, 1204 lpfr - IMX334_EXPOSURE_OFFSET, 1205 IMX334_EXPOSURE_STEP, 1206 IMX334_EXPOSURE_DEFAULT); 1207 1208 imx334->again_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, 1209 &imx334_ctrl_ops, 1210 V4L2_CID_ANALOGUE_GAIN, 1211 IMX334_AGAIN_MIN, 1212 IMX334_AGAIN_MAX, 1213 IMX334_AGAIN_STEP, 1214 IMX334_AGAIN_DEFAULT); 1215 1216 v4l2_ctrl_cluster(2, &imx334->exp_ctrl); 1217 1218 imx334->vblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, 1219 &imx334_ctrl_ops, 1220 V4L2_CID_VBLANK, 1221 mode->vblank_min, 1222 mode->vblank_max, 1223 1, mode->vblank); 1224 1225 /* Read only controls */ 1226 imx334->pclk_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, 1227 &imx334_ctrl_ops, 1228 V4L2_CID_PIXEL_RATE, 1229 mode->pclk, mode->pclk, 1230 1, mode->pclk); 1231 1232 imx334->link_freq_ctrl = v4l2_ctrl_new_int_menu(ctrl_hdlr, 1233 &imx334_ctrl_ops, 1234 V4L2_CID_LINK_FREQ, 1235 ARRAY_SIZE(link_freq) - 1236 1, 1237 mode->link_freq_idx, 1238 link_freq); 1239 if (imx334->link_freq_ctrl) 1240 imx334->link_freq_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1241 1242 imx334->hblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, 1243 &imx334_ctrl_ops, 1244 V4L2_CID_HBLANK, 1245 IMX334_REG_MIN, 1246 IMX334_REG_MAX, 1247 1, mode->hblank); 1248 if (imx334->hblank_ctrl) 1249 imx334->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1250 1251 if (ctrl_hdlr->error) { 1252 dev_err(imx334->dev, "control init failed: %d", 1253 ctrl_hdlr->error); 1254 v4l2_ctrl_handler_free(ctrl_hdlr); 1255 return ctrl_hdlr->error; 1256 } 1257 1258 imx334->sd.ctrl_handler = ctrl_hdlr; 1259 1260 return 0; 1261 } 1262 1263 /** 1264 * imx334_probe() - I2C client device binding 1265 * @client: pointer to i2c client device 1266 * 1267 * Return: 0 if successful, error code otherwise. 1268 */ 1269 static int imx334_probe(struct i2c_client *client) 1270 { 1271 struct imx334 *imx334; 1272 int ret; 1273 1274 imx334 = devm_kzalloc(&client->dev, sizeof(*imx334), GFP_KERNEL); 1275 if (!imx334) 1276 return -ENOMEM; 1277 1278 imx334->dev = &client->dev; 1279 1280 /* Initialize subdev */ 1281 v4l2_i2c_subdev_init(&imx334->sd, client, &imx334_subdev_ops); 1282 1283 ret = imx334_parse_hw_config(imx334); 1284 if (ret) { 1285 dev_err(imx334->dev, "HW configuration is not supported"); 1286 return ret; 1287 } 1288 1289 mutex_init(&imx334->mutex); 1290 1291 ret = imx334_power_on(imx334->dev); 1292 if (ret) { 1293 dev_err(imx334->dev, "failed to power-on the sensor"); 1294 goto error_mutex_destroy; 1295 } 1296 1297 /* Check module identity */ 1298 ret = imx334_detect(imx334); 1299 if (ret) { 1300 dev_err(imx334->dev, "failed to find sensor: %d", ret); 1301 goto error_power_off; 1302 } 1303 1304 /* Set default mode to max resolution */ 1305 imx334->cur_mode = &supported_modes[0]; 1306 imx334->cur_code = imx334_mbus_codes[0]; 1307 imx334->vblank = imx334->cur_mode->vblank; 1308 1309 ret = imx334_init_controls(imx334); 1310 if (ret) { 1311 dev_err(imx334->dev, "failed to init controls: %d", ret); 1312 goto error_power_off; 1313 } 1314 1315 /* Initialize subdev */ 1316 imx334->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1317 imx334->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 1318 1319 /* Initialize source pad */ 1320 imx334->pad.flags = MEDIA_PAD_FL_SOURCE; 1321 ret = media_entity_pads_init(&imx334->sd.entity, 1, &imx334->pad); 1322 if (ret) { 1323 dev_err(imx334->dev, "failed to init entity pads: %d", ret); 1324 goto error_handler_free; 1325 } 1326 1327 ret = v4l2_async_register_subdev_sensor(&imx334->sd); 1328 if (ret < 0) { 1329 dev_err(imx334->dev, 1330 "failed to register async subdev: %d", ret); 1331 goto error_media_entity; 1332 } 1333 1334 pm_runtime_set_active(imx334->dev); 1335 pm_runtime_enable(imx334->dev); 1336 pm_runtime_idle(imx334->dev); 1337 1338 return 0; 1339 1340 error_media_entity: 1341 media_entity_cleanup(&imx334->sd.entity); 1342 error_handler_free: 1343 v4l2_ctrl_handler_free(imx334->sd.ctrl_handler); 1344 error_power_off: 1345 imx334_power_off(imx334->dev); 1346 error_mutex_destroy: 1347 mutex_destroy(&imx334->mutex); 1348 1349 return ret; 1350 } 1351 1352 /** 1353 * imx334_remove() - I2C client device unbinding 1354 * @client: pointer to I2C client device 1355 * 1356 * Return: 0 if successful, error code otherwise. 1357 */ 1358 static void imx334_remove(struct i2c_client *client) 1359 { 1360 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1361 struct imx334 *imx334 = to_imx334(sd); 1362 1363 v4l2_async_unregister_subdev(sd); 1364 media_entity_cleanup(&sd->entity); 1365 v4l2_ctrl_handler_free(sd->ctrl_handler); 1366 1367 pm_runtime_disable(&client->dev); 1368 pm_runtime_suspended(&client->dev); 1369 1370 mutex_destroy(&imx334->mutex); 1371 } 1372 1373 static const struct dev_pm_ops imx334_pm_ops = { 1374 SET_RUNTIME_PM_OPS(imx334_power_off, imx334_power_on, NULL) 1375 }; 1376 1377 static const struct of_device_id imx334_of_match[] = { 1378 { .compatible = "sony,imx334" }, 1379 { } 1380 }; 1381 1382 MODULE_DEVICE_TABLE(of, imx334_of_match); 1383 1384 static struct i2c_driver imx334_driver = { 1385 .probe_new = imx334_probe, 1386 .remove = imx334_remove, 1387 .driver = { 1388 .name = "imx334", 1389 .pm = &imx334_pm_ops, 1390 .of_match_table = imx334_of_match, 1391 }, 1392 }; 1393 1394 module_i2c_driver(imx334_driver); 1395 1396 MODULE_DESCRIPTION("Sony imx334 sensor driver"); 1397 MODULE_LICENSE("GPL"); 1398