1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Copyright (C) 2021 THine Electronics, Inc. 4 * Copyright (C) 2023 Ideas on Board Oy 5 */ 6 7#include <asm/unaligned.h> 8 9#include <linux/clk.h> 10#include <linux/delay.h> 11#include <linux/device.h> 12#include <linux/firmware.h> 13#include <linux/gpio/consumer.h> 14#include <linux/i2c.h> 15#include <linux/init.h> 16#include <linux/iopoll.h> 17#include <linux/kernel.h> 18#include <linux/module.h> 19#include <linux/mtd/spi-nor.h> 20#include <linux/pm_runtime.h> 21#include <linux/property.h> 22#include <linux/regulator/consumer.h> 23#include <linux/slab.h> 24#include <linux/types.h> 25 26#include <media/v4l2-async.h> 27#include <media/v4l2-cci.h> 28#include <media/v4l2-ctrls.h> 29#include <media/v4l2-device.h> 30#include <media/v4l2-event.h> 31#include <media/v4l2-fwnode.h> 32#include <media/v4l2-subdev.h> 33 34#include <uapi/linux/thp7312.h> 35 36/* ISP registers */ 37 38#define THP7312_REG_FIRMWARE_VERSION_1 CCI_REG8(0xf000) 39#define THP7312_REG_CAMERA_STATUS CCI_REG8(0xf001) 40#define THP7312_REG_FIRMWARE_VERSION_2 CCI_REG8(0xf005) 41#define THP7312_REG_SET_OUTPUT_ENABLE CCI_REG8(0xf008) 42#define THP7312_OUTPUT_ENABLE 0x01 43#define THP7312_OUTPUT_DISABLE 0x00 44#define THP7312_REG_SET_OUTPUT_COLOR_COMPRESSION CCI_REG8(0xf009) 45#define THP7312_REG_SET_OUTPUT_COLOR_UYVY 0x00 46#define THP7312_REG_SET_OUTPUT_COLOR_YUY2 0x04 47#define THP7312_REG_FLIP_MIRROR CCI_REG8(0xf00c) 48#define THP7312_REG_FLIP_MIRROR_FLIP BIT(0) 49#define THP7312_REG_FLIP_MIRROR_MIRROR BIT(1) 50#define THP7312_REG_VIDEO_IMAGE_SIZE CCI_REG8(0xf00d) 51#define THP7312_VIDEO_IMAGE_SIZE_640x360 0x52 52#define THP7312_VIDEO_IMAGE_SIZE_640x460 0x03 53#define THP7312_VIDEO_IMAGE_SIZE_1280x720 0x0a 54#define THP7312_VIDEO_IMAGE_SIZE_1920x1080 0x0b 55#define THP7312_VIDEO_IMAGE_SIZE_3840x2160 0x0d 56#define THP7312_VIDEO_IMAGE_SIZE_4160x3120 0x14 57#define THP7312_VIDEO_IMAGE_SIZE_2016x1512 0x20 58#define THP7312_VIDEO_IMAGE_SIZE_2048x1536 0x21 59#define THP7312_REG_VIDEO_FRAME_RATE_MODE CCI_REG8(0xf00f) 60#define THP7312_VIDEO_FRAME_RATE_MODE1 0x80 61#define THP7312_VIDEO_FRAME_RATE_MODE2 0x81 62#define THP7312_VIDEO_FRAME_RATE_MODE3 0x82 63#define THP7312_REG_SET_DRIVING_MODE CCI_REG8(0xf010) 64#define THP7312_REG_DRIVING_MODE_STATUS CCI_REG8(0xf011) 65#define THP7312_REG_JPEG_COMPRESSION_FACTOR CCI_REG8(0xf01b) 66#define THP7312_REG_AE_EXPOSURE_COMPENSATION CCI_REG8(0xf022) 67#define THP7312_REG_AE_FLICKER_MODE CCI_REG8(0xf023) 68#define THP7312_AE_FLICKER_MODE_50 0x00 69#define THP7312_AE_FLICKER_MODE_60 0x01 70#define THP7312_AE_FLICKER_MODE_DISABLE 0x80 71#define THP7312_REG_AE_FIX_FRAME_RATE CCI_REG8(0xf02e) 72#define THP7312_REG_MANUAL_WB_RED_GAIN CCI_REG8(0xf036) 73#define THP7312_REG_MANUAL_WB_BLUE_GAIN CCI_REG8(0xf037) 74#define THP7312_REG_WB_MODE CCI_REG8(0xf039) 75#define THP7312_WB_MODE_AUTO 0x00 76#define THP7312_WB_MODE_MANUAL 0x11 77#define THP7312_REG_MANUAL_FOCUS_POSITION CCI_REG16(0xf03c) 78#define THP7312_REG_AF_CONTROL CCI_REG8(0xf040) 79#define THP7312_REG_AF_CONTROL_AF 0x01 80#define THP7312_REG_AF_CONTROL_MANUAL 0x10 81#define THP7312_REG_AF_CONTROL_LOCK 0x80 82#define THP7312_REG_AF_SETTING CCI_REG8(0xf041) 83#define THP7312_REG_AF_SETTING_ONESHOT_CONTRAST 0x00 84#define THP7312_REG_AF_SETTING_ONESHOT_PDAF 0x40 85#define THP7312_REG_AF_SETTING_ONESHOT_HYBRID 0x80 86#define THP7312_REG_AF_SETTING_CONTINUOUS_CONTRAST 0x30 87#define THP7312_REG_AF_SETTING_CONTINUOUS_PDAF 0x70 88#define THP7312_REG_AF_SETTING_CONTINUOUS_HYBRID 0xf0 89#define THP7312_REG_AF_SUPPORT CCI_REG8(0xf043) 90#define THP7312_AF_SUPPORT_PDAF BIT(1) 91#define THP7312_AF_SUPPORT_CONTRAST BIT(0) 92#define THP7312_REG_SATURATION CCI_REG8(0xf052) 93#define THP7312_REG_SHARPNESS CCI_REG8(0xf053) 94#define THP7312_REG_BRIGHTNESS CCI_REG8(0xf056) 95#define THP7312_REG_CONTRAST CCI_REG8(0xf057) 96#define THP7312_REG_NOISE_REDUCTION CCI_REG8(0xf059) 97#define THP7312_REG_NOISE_REDUCTION_FIXED BIT(7) 98 99#define TH7312_REG_CUSTOM_MIPI_SET CCI_REG8(0xf0f6) 100#define TH7312_REG_CUSTOM_MIPI_STATUS CCI_REG8(0xf0f7) 101#define TH7312_REG_CUSTOM_MIPI_RD CCI_REG8(0xf0f8) 102#define TH7312_REG_CUSTOM_MIPI_TD CCI_REG8(0xf0f9) 103 104/* 105 * Firmware update registers. Those use a different address space than the 106 * normal operation ISP registers. 107 */ 108 109#define THP7312_REG_FW_DRIVABILITY CCI_REG32(0xd65c) 110#define THP7312_REG_FW_DEST_BANK_ADDR CCI_REG32(0xff08) 111#define THP7312_REG_FW_VERIFY_RESULT CCI_REG8(0xff60) 112#define THP7312_REG_FW_RESET_FLASH CCI_REG8(0xff61) 113#define THP7312_REG_FW_MEMORY_IO_SETTING CCI_REG8(0xff62) 114#define THP7312_FW_MEMORY_IO_GPIO0 1 115#define THP7312_FW_MEMORY_IO_GPIO1 0 116#define THP7312_REG_FW_CRC_RESULT CCI_REG32(0xff64) 117#define THP7312_REG_FW_STATUS CCI_REG8(0xfffc) 118 119#define THP7312_FW_VERSION(major, minor) (((major) << 8) | (minor)) 120#define THP7312_FW_VERSION_MAJOR(v) ((v) >> 8) 121#define THP7312_FW_VERSION_MINOR(v) ((v) & 0xff) 122 123enum thp7312_focus_method { 124 THP7312_FOCUS_METHOD_CONTRAST, 125 THP7312_FOCUS_METHOD_PDAF, 126 THP7312_FOCUS_METHOD_HYBRID, 127}; 128 129/* 130 * enum thp7312_focus_state - State of the focus handler 131 * 132 * @THP7312_FOCUS_STATE_MANUAL: Manual focus, controlled through the 133 * V4L2_CID_FOCUS_ABSOLUTE control 134 * @THP7312_FOCUS_STATE_AUTO: Continuous auto-focus 135 * @THP7312_FOCUS_STATE_LOCKED: Lock the focus to a fixed position. This state 136 * is entered when switching from auto to manual mode. 137 * @THP7312_FOCUS_STATE_ONESHOT: One-shot auto-focus 138 * 139 * Valid transitions are as follow: 140 * 141 * digraph fsm { 142 * node [shape=circle]; 143 * 144 * manual [label="MANUAL"]; 145 * auto [label="AUTO"]; 146 * locked [label="LOCKED"]; 147 * oneshot [label="ONESHOT"]; 148 * 149 * manual -> auto [label="FOCUS_AUTO <- true"] 150 * locked -> auto [label="FOCUS_AUTO <- true"] 151 * oneshot -> auto [label="FOCUS_AUTO <- true"] 152 * auto -> locked [label="FOCUS_AUTO <- false"] 153 * 154 * locked -> manual [label="FOCUS_ABSOLUTE <- *"] 155 * oneshot -> manual [label="FOCUS_ABSOLUTE <- *"] 156 * 157 * manual -> oneshot [label="FOCUS_START <- *"] 158 * locked -> oneshot [label="FOCUS_START <- *"] 159 * } 160 */ 161enum thp7312_focus_state { 162 THP7312_FOCUS_STATE_MANUAL, 163 THP7312_FOCUS_STATE_AUTO, 164 THP7312_FOCUS_STATE_LOCKED, 165 THP7312_FOCUS_STATE_ONESHOT, 166}; 167 168enum thp7312_boot_mode { 169 THP7312_BOOT_MODE_2WIRE_SLAVE = 0, 170 THP7312_BOOT_MODE_SPI_MASTER = 1, 171}; 172 173struct thp7312_frame_rate { 174 u32 fps; 175 u32 link_freq; 176 u8 reg_frame_rate_mode; 177}; 178 179struct thp7312_mode_info { 180 u32 width; 181 u32 height; 182 u8 reg_image_size; 183 const struct thp7312_frame_rate *rates; 184}; 185 186static const u32 thp7312_colour_fmts[] = { 187 MEDIA_BUS_FMT_YUYV8_1X16, 188}; 189 190/* regulator supplies */ 191static const char * const thp7312_supply_name[] = { 192 "vddcore", 193 "vhtermrx", 194 "vddtx", 195 "vddhost", 196 "vddcmos", 197 "vddgpio-0", 198 "vddgpio-1", 199}; 200 201static const struct thp7312_mode_info thp7312_mode_info_data[] = { 202 { 203 .width = 1920, 204 .height = 1080, 205 .reg_image_size = THP7312_VIDEO_IMAGE_SIZE_1920x1080, 206 .rates = (const struct thp7312_frame_rate[]) { 207 { 30, 300000000, 0x81 }, 208 { 60, 387500000, 0x82 }, 209 { 0 } 210 }, 211 }, { 212 .width = 2048, 213 .height = 1536, 214 .reg_image_size = THP7312_VIDEO_IMAGE_SIZE_2048x1536, 215 .rates = (const struct thp7312_frame_rate[]) { 216 { 30, 300000000, 0x81 }, 217 { 0 } 218 } 219 }, { 220 .width = 3840, 221 .height = 2160, 222 .reg_image_size = THP7312_VIDEO_IMAGE_SIZE_3840x2160, 223 .rates = (const struct thp7312_frame_rate[]) { 224 { 30, 600000000, 0x81 }, 225 { 0 } 226 }, 227 }, { 228 .width = 4160, 229 .height = 3120, 230 .reg_image_size = THP7312_VIDEO_IMAGE_SIZE_4160x3120, 231 .rates = (const struct thp7312_frame_rate[]) { 232 { 20, 600000000, 0x81 }, 233 { 0 } 234 }, 235 }, 236}; 237 238struct thp7312_device; 239 240struct thp7312_sensor_info { 241 const char *model; 242}; 243 244struct thp7312_sensor { 245 const struct thp7312_sensor_info *info; 246 u8 lane_remap; 247}; 248 249struct thp7312_device { 250 struct device *dev; 251 struct regmap *regmap; 252 253 struct v4l2_subdev sd; 254 struct media_pad pad; 255 256 struct gpio_desc *reset_gpio; 257 struct regulator_bulk_data supplies[ARRAY_SIZE(thp7312_supply_name)]; 258 struct clk *iclk; 259 260 u8 lane_remap; 261 262 struct thp7312_sensor sensors[1]; 263 264 enum thp7312_boot_mode boot_mode; 265 266 struct v4l2_ctrl_handler ctrl_handler; 267 bool ctrls_applied; 268 269 s64 link_freq; 270 271 struct { 272 struct v4l2_ctrl *hflip; 273 struct v4l2_ctrl *vflip; 274 }; 275 276 struct { 277 struct v4l2_ctrl *focus_auto; 278 struct v4l2_ctrl *focus_absolute; 279 struct v4l2_ctrl *focus_start; 280 struct v4l2_ctrl *focus_method; 281 }; 282 283 enum thp7312_focus_state focus_state; 284 285 struct { 286 struct v4l2_ctrl *noise_reduction_auto; 287 struct v4l2_ctrl *noise_reduction_absolute; 288 }; 289 290 /* Lock to protect fw_cancel */ 291 struct mutex fw_lock; 292 struct fw_upload *fwl; 293 u8 *fw_write_buf; 294 bool fw_cancel; 295 296 u16 fw_version; 297}; 298 299static const struct thp7312_sensor_info thp7312_sensor_info[] = { 300 { 301 .model = "sony,imx258", 302 }, 303}; 304 305static inline struct thp7312_device *to_thp7312_dev(struct v4l2_subdev *sd) 306{ 307 return container_of(sd, struct thp7312_device, sd); 308} 309 310static const struct thp7312_mode_info * 311thp7312_find_mode(unsigned int width, unsigned int height, bool nearest) 312{ 313 const struct thp7312_mode_info *mode; 314 315 mode = v4l2_find_nearest_size(thp7312_mode_info_data, 316 ARRAY_SIZE(thp7312_mode_info_data), 317 width, height, width, height); 318 319 if (!nearest && (mode->width != width || mode->height != height)) 320 return NULL; 321 322 return mode; 323} 324 325static const struct thp7312_frame_rate * 326thp7312_find_rate(const struct thp7312_mode_info *mode, unsigned int fps, 327 bool nearest) 328{ 329 const struct thp7312_frame_rate *best_rate = NULL; 330 const struct thp7312_frame_rate *rate; 331 unsigned int best_delta = UINT_MAX; 332 333 if (!mode) 334 return NULL; 335 336 for (rate = mode->rates; rate->fps && best_delta; ++rate) { 337 unsigned int delta = abs(rate->fps - fps); 338 339 if (delta <= best_delta) { 340 best_delta = delta; 341 best_rate = rate; 342 } 343 } 344 345 if (!nearest && best_delta) 346 return NULL; 347 348 return best_rate; 349} 350 351/* ----------------------------------------------------------------------------- 352 * Device Access & Configuration 353 */ 354 355#define thp7312_read_poll_timeout(dev, addr, val, cond, sleep_us, timeout_us) \ 356({ \ 357 int __ret, __err; \ 358 __ret = read_poll_timeout(cci_read, __err, __err || (cond), sleep_us, \ 359 timeout_us, false, (dev)->regmap, addr, \ 360 &(val), NULL); \ 361 __ret ? : __err; \ 362}) 363 364static int thp7312_map_data_lanes(u8 *lane_remap, const u8 *lanes, u8 num_lanes) 365{ 366 u8 used_lanes = 0; 367 u8 val = 0; 368 unsigned int i; 369 370 /* 371 * The value that we write to the register is the index in the 372 * data-lanes array, so we need to do a conversion. Do this in the same 373 * pass as validating data-lanes. 374 */ 375 for (i = 0; i < num_lanes; i++) { 376 if (lanes[i] < 1 || lanes[i] > 4) 377 return -EINVAL; 378 379 if (used_lanes & (BIT(lanes[i]))) 380 return -EINVAL; 381 382 used_lanes |= BIT(lanes[i]); 383 384 /* 385 * data-lanes is 1-indexed while the field position in the 386 * register is 0-indexed. 387 */ 388 val |= i << ((lanes[i] - 1) * 2); 389 } 390 391 *lane_remap = val; 392 393 return 0; 394} 395 396static int thp7312_set_mipi_lanes(struct thp7312_device *thp7312) 397{ 398 struct device *dev = thp7312->dev; 399 int ret = 0; 400 u64 val; 401 402 cci_write(thp7312->regmap, TH7312_REG_CUSTOM_MIPI_RD, 403 thp7312->sensors[0].lane_remap, &ret); 404 cci_write(thp7312->regmap, TH7312_REG_CUSTOM_MIPI_TD, 405 thp7312->lane_remap, &ret); 406 cci_write(thp7312->regmap, TH7312_REG_CUSTOM_MIPI_SET, 1, &ret); 407 408 if (ret) 409 return ret; 410 411 ret = thp7312_read_poll_timeout(thp7312, TH7312_REG_CUSTOM_MIPI_STATUS, 412 val, val == 0x00, 100000, 2000000); 413 if (ret) { 414 dev_err(dev, "Failed to poll MIPI lane status: %d\n", ret); 415 return ret; 416 } 417 418 return 0; 419} 420 421static int thp7312_change_mode(struct thp7312_device *thp7312, 422 const struct thp7312_mode_info *mode, 423 const struct thp7312_frame_rate *rate) 424{ 425 struct device *dev = thp7312->dev; 426 u64 val = 0; 427 int ret; 428 429 ret = thp7312_read_poll_timeout(thp7312, THP7312_REG_CAMERA_STATUS, val, 430 val == 0x80, 20000, 200000); 431 if (ret < 0) { 432 dev_err(dev, "%s(): failed to poll ISP: %d\n", __func__, ret); 433 return ret; 434 } 435 436 cci_write(thp7312->regmap, THP7312_REG_VIDEO_IMAGE_SIZE, 437 mode->reg_image_size, &ret); 438 cci_write(thp7312->regmap, THP7312_REG_VIDEO_FRAME_RATE_MODE, 439 rate->reg_frame_rate_mode, &ret); 440 cci_write(thp7312->regmap, THP7312_REG_JPEG_COMPRESSION_FACTOR, 0x5e, 441 &ret); 442 cci_write(thp7312->regmap, THP7312_REG_SET_DRIVING_MODE, 0x01, &ret); 443 444 if (ret) 445 return ret; 446 447 ret = thp7312_read_poll_timeout(thp7312, THP7312_REG_DRIVING_MODE_STATUS, 448 val, val == 0x01, 20000, 100000); 449 if (ret < 0) { 450 dev_err(dev, "%s(): failed\n", __func__); 451 return ret; 452 } 453 454 return 0; 455} 456 457static int thp7312_set_framefmt(struct thp7312_device *thp7312, 458 struct v4l2_mbus_framefmt *format) 459{ 460 u8 val; 461 462 switch (format->code) { 463 case MEDIA_BUS_FMT_UYVY8_1X16: 464 /* YUV422, UYVY */ 465 val = THP7312_REG_SET_OUTPUT_COLOR_UYVY; 466 break; 467 case MEDIA_BUS_FMT_YUYV8_1X16: 468 /* YUV422, YUYV */ 469 val = THP7312_REG_SET_OUTPUT_COLOR_YUY2; 470 break; 471 default: 472 /* Should never happen */ 473 return -EINVAL; 474 } 475 476 return cci_write(thp7312->regmap, 477 THP7312_REG_SET_OUTPUT_COLOR_COMPRESSION, val, NULL); 478} 479 480static int thp7312_init_mode(struct thp7312_device *thp7312, 481 struct v4l2_subdev_state *sd_state) 482{ 483 const struct thp7312_mode_info *mode; 484 const struct thp7312_frame_rate *rate; 485 struct v4l2_mbus_framefmt *fmt; 486 struct v4l2_fract *interval; 487 int ret; 488 489 /* 490 * TODO: The mode and rate should be cached in the subdev state, once 491 * support for extending states will be available. 492 */ 493 fmt = v4l2_subdev_state_get_format(sd_state, 0); 494 interval = v4l2_subdev_state_get_interval(sd_state, 0); 495 496 mode = thp7312_find_mode(fmt->width, fmt->height, false); 497 rate = thp7312_find_rate(mode, interval->denominator, false); 498 499 if (WARN_ON(!mode || !rate)) 500 return -EINVAL; 501 502 ret = thp7312_set_framefmt(thp7312, fmt); 503 if (ret) 504 return ret; 505 506 return thp7312_change_mode(thp7312, mode, rate); 507} 508 509static int thp7312_stream_enable(struct thp7312_device *thp7312, bool enable) 510{ 511 return cci_write(thp7312->regmap, THP7312_REG_SET_OUTPUT_ENABLE, 512 enable ? THP7312_OUTPUT_ENABLE : THP7312_OUTPUT_DISABLE, 513 NULL); 514} 515 516static int thp7312_check_status_stream_mode(struct thp7312_device *thp7312) 517{ 518 struct device *dev = thp7312->dev; 519 u64 status = 0; 520 int ret; 521 522 while (status != 0x80) { 523 ret = cci_read(thp7312->regmap, THP7312_REG_CAMERA_STATUS, 524 &status, NULL); 525 if (ret) 526 return ret; 527 528 if (status == 0x80) { 529 dev_dbg(dev, "Camera initialization done\n"); 530 return 0; 531 } 532 533 if (status != 0x00) { 534 dev_err(dev, "Invalid camera status %llx\n", status); 535 return -EINVAL; 536 } 537 538 dev_dbg(dev, "Camera initializing...\n"); 539 usleep_range(70000, 80000); 540 } 541 542 return 0; 543} 544 545static void thp7312_reset(struct thp7312_device *thp7312) 546{ 547 unsigned long rate; 548 549 gpiod_set_value_cansleep(thp7312->reset_gpio, 1); 550 551 /* 552 * The minimum reset duration is 8 clock cycles, make it 10 to provide 553 * a safety margin. 554 */ 555 rate = clk_get_rate(thp7312->iclk); 556 fsleep(DIV_ROUND_UP(10 * USEC_PER_SEC, rate)); 557 558 gpiod_set_value_cansleep(thp7312->reset_gpio, 0); 559 560 /* 561 * TODO: The documentation states that the device needs 2ms to 562 * initialize after reset is deasserted. It then proceeds to load the 563 * firmware from the flash memory, which takes an unspecified amount of 564 * time. Check if this delay could be reduced. 565 */ 566 fsleep(300000); 567} 568 569/* ----------------------------------------------------------------------------- 570 * Power Management 571 */ 572 573static void __thp7312_power_off(struct thp7312_device *thp7312) 574{ 575 regulator_bulk_disable(ARRAY_SIZE(thp7312->supplies), thp7312->supplies); 576 clk_disable_unprepare(thp7312->iclk); 577} 578 579static void thp7312_power_off(struct thp7312_device *thp7312) 580{ 581 __thp7312_power_off(thp7312); 582} 583 584static int __thp7312_power_on(struct thp7312_device *thp7312) 585{ 586 struct device *dev = thp7312->dev; 587 int ret; 588 589 ret = regulator_bulk_enable(ARRAY_SIZE(thp7312->supplies), 590 thp7312->supplies); 591 if (ret < 0) 592 return ret; 593 594 ret = clk_prepare_enable(thp7312->iclk); 595 if (ret < 0) { 596 dev_err(dev, "clk prepare enable failed\n"); 597 regulator_bulk_disable(ARRAY_SIZE(thp7312->supplies), 598 thp7312->supplies); 599 return ret; 600 } 601 602 /* 603 * We cannot assume that turning off and on again will reset, so do a 604 * software reset on power up. 605 */ 606 thp7312_reset(thp7312); 607 608 return 0; 609} 610 611static int thp7312_power_on(struct thp7312_device *thp7312) 612{ 613 int ret; 614 615 ret = __thp7312_power_on(thp7312); 616 if (ret < 0) 617 return ret; 618 619 ret = thp7312_check_status_stream_mode(thp7312); 620 if (ret < 0) 621 goto error; 622 623 ret = thp7312_set_mipi_lanes(thp7312); 624 if (ret) 625 goto error; 626 627 return 0; 628 629error: 630 thp7312_power_off(thp7312); 631 return ret; 632} 633 634static int __maybe_unused thp7312_pm_runtime_suspend(struct device *dev) 635{ 636 struct v4l2_subdev *sd = dev_get_drvdata(dev); 637 struct thp7312_device *thp7312 = to_thp7312_dev(sd); 638 639 thp7312_power_off(thp7312); 640 641 thp7312->ctrls_applied = false; 642 643 return 0; 644} 645 646static int __maybe_unused thp7312_pm_runtime_resume(struct device *dev) 647{ 648 struct v4l2_subdev *sd = dev_get_drvdata(dev); 649 struct thp7312_device *thp7312 = to_thp7312_dev(sd); 650 651 return thp7312_power_on(thp7312); 652} 653 654static const struct dev_pm_ops thp7312_pm_ops = { 655 SET_RUNTIME_PM_OPS(thp7312_pm_runtime_suspend, 656 thp7312_pm_runtime_resume, NULL) 657}; 658 659/* ----------------------------------------------------------------------------- 660 * V4L2 Subdev Operations 661 */ 662 663static bool thp7312_find_bus_code(u32 code) 664{ 665 unsigned int i; 666 667 for (i = 0; i < ARRAY_SIZE(thp7312_colour_fmts); ++i) { 668 if (thp7312_colour_fmts[i] == code) 669 return true; 670 } 671 672 return false; 673} 674 675static int thp7312_enum_mbus_code(struct v4l2_subdev *sd, 676 struct v4l2_subdev_state *sd_state, 677 struct v4l2_subdev_mbus_code_enum *code) 678{ 679 if (code->index >= ARRAY_SIZE(thp7312_colour_fmts)) 680 return -EINVAL; 681 682 code->code = thp7312_colour_fmts[code->index]; 683 684 return 0; 685} 686 687static int thp7312_enum_frame_size(struct v4l2_subdev *sd, 688 struct v4l2_subdev_state *sd_state, 689 struct v4l2_subdev_frame_size_enum *fse) 690{ 691 if (!thp7312_find_bus_code(fse->code)) 692 return -EINVAL; 693 694 if (fse->index >= ARRAY_SIZE(thp7312_mode_info_data)) 695 return -EINVAL; 696 697 fse->min_width = thp7312_mode_info_data[fse->index].width; 698 fse->max_width = fse->min_width; 699 fse->min_height = thp7312_mode_info_data[fse->index].height; 700 fse->max_height = fse->min_height; 701 702 return 0; 703} 704 705static int thp7312_enum_frame_interval(struct v4l2_subdev *sd, 706 struct v4l2_subdev_state *sd_state, 707 struct v4l2_subdev_frame_interval_enum *fie) 708{ 709 const struct thp7312_frame_rate *rate; 710 const struct thp7312_mode_info *mode; 711 unsigned int index = fie->index; 712 713 if (!thp7312_find_bus_code(fie->code)) 714 return -EINVAL; 715 716 mode = thp7312_find_mode(fie->width, fie->height, false); 717 if (!mode) 718 return -EINVAL; 719 720 for (rate = mode->rates; rate->fps; ++rate, --index) { 721 if (!index) { 722 fie->interval.numerator = 1; 723 fie->interval.denominator = rate->fps; 724 725 return 0; 726 } 727 } 728 729 return -EINVAL; 730} 731 732static int thp7312_set_fmt(struct v4l2_subdev *sd, 733 struct v4l2_subdev_state *sd_state, 734 struct v4l2_subdev_format *format) 735{ 736 struct thp7312_device *thp7312 = to_thp7312_dev(sd); 737 struct v4l2_mbus_framefmt *mbus_fmt = &format->format; 738 struct v4l2_mbus_framefmt *fmt; 739 struct v4l2_fract *interval; 740 const struct thp7312_mode_info *mode; 741 742 if (!thp7312_find_bus_code(mbus_fmt->code)) 743 mbus_fmt->code = thp7312_colour_fmts[0]; 744 745 mode = thp7312_find_mode(mbus_fmt->width, mbus_fmt->height, true); 746 747 fmt = v4l2_subdev_state_get_format(sd_state, 0); 748 749 fmt->code = mbus_fmt->code; 750 fmt->width = mode->width; 751 fmt->height = mode->height; 752 fmt->colorspace = V4L2_COLORSPACE_SRGB; 753 fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace); 754 fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE; 755 fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace); 756 757 *mbus_fmt = *fmt; 758 759 interval = v4l2_subdev_state_get_interval(sd_state, 0); 760 interval->numerator = 1; 761 interval->denominator = mode->rates[0].fps; 762 763 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) 764 thp7312->link_freq = mode->rates[0].link_freq; 765 766 return 0; 767} 768 769static int thp7312_set_frame_interval(struct v4l2_subdev *sd, 770 struct v4l2_subdev_state *sd_state, 771 struct v4l2_subdev_frame_interval *fi) 772{ 773 struct thp7312_device *thp7312 = to_thp7312_dev(sd); 774 const struct thp7312_mode_info *mode; 775 const struct thp7312_frame_rate *rate; 776 const struct v4l2_mbus_framefmt *fmt; 777 struct v4l2_fract *interval; 778 unsigned int fps; 779 780 /* Avoid divisions by 0, pick the highest frame if the interval is 0. */ 781 fps = fi->interval.numerator 782 ? DIV_ROUND_CLOSEST(fi->interval.denominator, fi->interval.numerator) 783 : UINT_MAX; 784 785 fmt = v4l2_subdev_state_get_format(sd_state, 0); 786 mode = thp7312_find_mode(fmt->width, fmt->height, false); 787 rate = thp7312_find_rate(mode, fps, true); 788 789 interval = v4l2_subdev_state_get_interval(sd_state, 0); 790 interval->numerator = 1; 791 interval->denominator = rate->fps; 792 793 if (fi->which == V4L2_SUBDEV_FORMAT_ACTIVE) 794 thp7312->link_freq = rate->link_freq; 795 796 fi->interval = *interval; 797 798 return 0; 799} 800 801static int thp7312_s_stream(struct v4l2_subdev *sd, int enable) 802{ 803 struct thp7312_device *thp7312 = to_thp7312_dev(sd); 804 struct v4l2_subdev_state *sd_state; 805 int ret; 806 807 sd_state = v4l2_subdev_lock_and_get_active_state(sd); 808 809 if (!enable) { 810 thp7312_stream_enable(thp7312, false); 811 812 pm_runtime_mark_last_busy(thp7312->dev); 813 pm_runtime_put_autosuspend(thp7312->dev); 814 815 v4l2_subdev_unlock_state(sd_state); 816 817 return 0; 818 } 819 820 ret = pm_runtime_resume_and_get(thp7312->dev); 821 if (ret) 822 goto finish_unlock; 823 824 ret = thp7312_init_mode(thp7312, sd_state); 825 if (ret) 826 goto finish_pm; 827 828 if (!thp7312->ctrls_applied) { 829 ret = __v4l2_ctrl_handler_setup(&thp7312->ctrl_handler); 830 if (ret) 831 goto finish_pm; 832 833 thp7312->ctrls_applied = true; 834 } 835 836 ret = thp7312_stream_enable(thp7312, true); 837 if (ret) 838 goto finish_pm; 839 840 goto finish_unlock; 841 842finish_pm: 843 pm_runtime_mark_last_busy(thp7312->dev); 844 pm_runtime_put_autosuspend(thp7312->dev); 845finish_unlock: 846 v4l2_subdev_unlock_state(sd_state); 847 848 return ret; 849} 850 851static int thp7312_init_state(struct v4l2_subdev *sd, 852 struct v4l2_subdev_state *sd_state) 853{ 854 const struct thp7312_mode_info *default_mode = &thp7312_mode_info_data[0]; 855 struct v4l2_mbus_framefmt *fmt; 856 struct v4l2_fract *interval; 857 858 fmt = v4l2_subdev_state_get_format(sd_state, 0); 859 interval = v4l2_subdev_state_get_interval(sd_state, 0); 860 861 /* 862 * default init sequence initialize thp7312 to 863 * YUV422 YUYV VGA@30fps 864 */ 865 fmt->code = MEDIA_BUS_FMT_YUYV8_1X16; 866 fmt->colorspace = V4L2_COLORSPACE_SRGB; 867 fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace); 868 fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE; 869 fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace); 870 fmt->width = default_mode->width; 871 fmt->height = default_mode->height; 872 fmt->field = V4L2_FIELD_NONE; 873 874 interval->numerator = 1; 875 interval->denominator = default_mode->rates[0].fps; 876 877 return 0; 878} 879 880static const struct v4l2_subdev_core_ops thp7312_core_ops = { 881 .log_status = v4l2_ctrl_subdev_log_status, 882 .subscribe_event = v4l2_ctrl_subdev_subscribe_event, 883 .unsubscribe_event = v4l2_event_subdev_unsubscribe, 884}; 885 886static const struct v4l2_subdev_video_ops thp7312_video_ops = { 887 .s_stream = thp7312_s_stream, 888}; 889 890static const struct v4l2_subdev_pad_ops thp7312_pad_ops = { 891 .enum_mbus_code = thp7312_enum_mbus_code, 892 .get_fmt = v4l2_subdev_get_fmt, 893 .set_fmt = thp7312_set_fmt, 894 .get_frame_interval = v4l2_subdev_get_frame_interval, 895 .set_frame_interval = thp7312_set_frame_interval, 896 .enum_frame_size = thp7312_enum_frame_size, 897 .enum_frame_interval = thp7312_enum_frame_interval, 898}; 899 900static const struct v4l2_subdev_ops thp7312_subdev_ops = { 901 .core = &thp7312_core_ops, 902 .video = &thp7312_video_ops, 903 .pad = &thp7312_pad_ops, 904}; 905 906static const struct v4l2_subdev_internal_ops thp7312_internal_ops = { 907 .init_state = thp7312_init_state, 908}; 909 910/* ----------------------------------------------------------------------------- 911 * V4L2 Control Operations 912 */ 913 914static inline struct thp7312_device *to_thp7312_from_ctrl(struct v4l2_ctrl *ctrl) 915{ 916 return container_of(ctrl->handler, struct thp7312_device, ctrl_handler); 917} 918 919/* 0: 3000cm, 18: 8cm */ 920static const u16 thp7312_focus_values[] = { 921 3000, 1000, 600, 450, 350, 922 290, 240, 200, 170, 150, 923 140, 130, 120, 110, 100, 924 93, 87, 83, 80, 925}; 926 927static int thp7312_set_focus(struct thp7312_device *thp7312) 928{ 929 enum thp7312_focus_state new_state = thp7312->focus_state; 930 bool continuous; 931 u8 af_control; 932 u8 af_setting; 933 int ret = 0; 934 935 /* Start by programming the manual focus position if it has changed. */ 936 if (thp7312->focus_absolute->is_new) { 937 unsigned int value; 938 939 value = thp7312_focus_values[thp7312->focus_absolute->val]; 940 941 ret = cci_write(thp7312->regmap, 942 THP7312_REG_MANUAL_FOCUS_POSITION, value, NULL); 943 if (ret) 944 return ret; 945 } 946 947 /* Calculate the new focus state. */ 948 switch (thp7312->focus_state) { 949 case THP7312_FOCUS_STATE_MANUAL: 950 default: 951 if (thp7312->focus_auto->val) 952 new_state = THP7312_FOCUS_STATE_AUTO; 953 else if (thp7312->focus_start->is_new) 954 new_state = THP7312_FOCUS_STATE_ONESHOT; 955 break; 956 957 case THP7312_FOCUS_STATE_AUTO: 958 if (!thp7312->focus_auto->val) 959 new_state = THP7312_FOCUS_STATE_LOCKED; 960 break; 961 962 case THP7312_FOCUS_STATE_LOCKED: 963 if (thp7312->focus_auto->val) 964 new_state = THP7312_FOCUS_STATE_AUTO; 965 else if (thp7312->focus_start->is_new) 966 new_state = THP7312_FOCUS_STATE_ONESHOT; 967 else if (thp7312->focus_absolute->is_new) 968 new_state = THP7312_FOCUS_STATE_MANUAL; 969 break; 970 971 case THP7312_FOCUS_STATE_ONESHOT: 972 if (thp7312->focus_auto->val) 973 new_state = THP7312_FOCUS_STATE_AUTO; 974 else if (thp7312->focus_start->is_new) 975 new_state = THP7312_FOCUS_STATE_ONESHOT; 976 else if (thp7312->focus_absolute->is_new) 977 new_state = THP7312_FOCUS_STATE_MANUAL; 978 break; 979 } 980 981 /* 982 * If neither the state nor the focus method has changed, and no new 983 * one-shot focus is requested, there's nothing new to program to the 984 * hardware. 985 */ 986 if (thp7312->focus_state == new_state && 987 !thp7312->focus_method->is_new && !thp7312->focus_start->is_new) 988 return 0; 989 990 continuous = new_state == THP7312_FOCUS_STATE_MANUAL || 991 new_state == THP7312_FOCUS_STATE_ONESHOT; 992 993 switch (thp7312->focus_method->val) { 994 case THP7312_FOCUS_METHOD_CONTRAST: 995 default: 996 af_setting = continuous 997 ? THP7312_REG_AF_SETTING_CONTINUOUS_CONTRAST 998 : THP7312_REG_AF_SETTING_ONESHOT_CONTRAST; 999 break; 1000 case THP7312_FOCUS_METHOD_PDAF: 1001 af_setting = continuous 1002 ? THP7312_REG_AF_SETTING_CONTINUOUS_PDAF 1003 : THP7312_REG_AF_SETTING_ONESHOT_PDAF; 1004 break; 1005 case THP7312_FOCUS_METHOD_HYBRID: 1006 af_setting = continuous 1007 ? THP7312_REG_AF_SETTING_CONTINUOUS_HYBRID 1008 : THP7312_REG_AF_SETTING_ONESHOT_HYBRID; 1009 break; 1010 } 1011 1012 switch (new_state) { 1013 case THP7312_FOCUS_STATE_MANUAL: 1014 default: 1015 af_control = THP7312_REG_AF_CONTROL_MANUAL; 1016 break; 1017 case THP7312_FOCUS_STATE_AUTO: 1018 case THP7312_FOCUS_STATE_ONESHOT: 1019 af_control = THP7312_REG_AF_CONTROL_AF; 1020 break; 1021 case THP7312_FOCUS_STATE_LOCKED: 1022 af_control = THP7312_REG_AF_CONTROL_LOCK; 1023 break; 1024 } 1025 1026 cci_write(thp7312->regmap, THP7312_REG_AF_SETTING, af_setting, &ret); 1027 1028 if (new_state == THP7312_FOCUS_STATE_MANUAL && 1029 (thp7312->focus_state == THP7312_FOCUS_STATE_AUTO || 1030 thp7312->focus_state == THP7312_FOCUS_STATE_ONESHOT)) { 1031 /* When switching to manual state, lock AF first. */ 1032 cci_write(thp7312->regmap, THP7312_REG_AF_CONTROL, 1033 THP7312_REG_AF_CONTROL_LOCK, &ret); 1034 } 1035 1036 cci_write(thp7312->regmap, THP7312_REG_AF_CONTROL, af_control, &ret); 1037 1038 if (ret) 1039 return ret; 1040 1041 thp7312->focus_state = new_state; 1042 1043 return 0; 1044} 1045 1046static int thp7312_s_ctrl(struct v4l2_ctrl *ctrl) 1047{ 1048 struct thp7312_device *thp7312 = to_thp7312_from_ctrl(ctrl); 1049 int ret = 0; 1050 u8 value; 1051 1052 if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE) 1053 return -EINVAL; 1054 1055 if (!pm_runtime_get_if_active(thp7312->dev)) 1056 return 0; 1057 1058 switch (ctrl->id) { 1059 case V4L2_CID_BRIGHTNESS: 1060 cci_write(thp7312->regmap, THP7312_REG_BRIGHTNESS, 1061 ctrl->val + 10, &ret); 1062 break; 1063 1064 case V4L2_CID_THP7312_LOW_LIGHT_COMPENSATION: 1065 /* 0 = Auto adjust frame rate, 1 = Fix frame rate */ 1066 cci_write(thp7312->regmap, THP7312_REG_AE_FIX_FRAME_RATE, 1067 ctrl->val ? 0 : 1, &ret); 1068 break; 1069 1070 case V4L2_CID_FOCUS_AUTO: 1071 case V4L2_CID_FOCUS_ABSOLUTE: 1072 case V4L2_CID_AUTO_FOCUS_START: 1073 case V4L2_CID_THP7312_AUTO_FOCUS_METHOD: 1074 ret = thp7312_set_focus(thp7312); 1075 break; 1076 1077 case V4L2_CID_HFLIP: 1078 case V4L2_CID_VFLIP: 1079 value = (thp7312->hflip->val ? THP7312_REG_FLIP_MIRROR_MIRROR : 0) 1080 | (thp7312->vflip->val ? THP7312_REG_FLIP_MIRROR_FLIP : 0); 1081 1082 cci_write(thp7312->regmap, THP7312_REG_FLIP_MIRROR, value, &ret); 1083 break; 1084 1085 case V4L2_CID_THP7312_NOISE_REDUCTION_AUTO: 1086 case V4L2_CID_THP7312_NOISE_REDUCTION_ABSOLUTE: 1087 value = thp7312->noise_reduction_auto->val ? 0 1088 : THP7312_REG_NOISE_REDUCTION_FIXED | 1089 thp7312->noise_reduction_absolute->val; 1090 1091 cci_write(thp7312->regmap, THP7312_REG_NOISE_REDUCTION, value, 1092 &ret); 1093 break; 1094 1095 case V4L2_CID_AUTO_WHITE_BALANCE: 1096 value = ctrl->val ? THP7312_WB_MODE_AUTO : THP7312_WB_MODE_MANUAL; 1097 1098 cci_write(thp7312->regmap, THP7312_REG_WB_MODE, value, &ret); 1099 break; 1100 1101 case V4L2_CID_RED_BALANCE: 1102 cci_write(thp7312->regmap, THP7312_REG_MANUAL_WB_RED_GAIN, 1103 ctrl->val, &ret); 1104 break; 1105 1106 case V4L2_CID_BLUE_BALANCE: 1107 cci_write(thp7312->regmap, THP7312_REG_MANUAL_WB_BLUE_GAIN, 1108 ctrl->val, &ret); 1109 break; 1110 1111 case V4L2_CID_AUTO_EXPOSURE_BIAS: 1112 cci_write(thp7312->regmap, THP7312_REG_AE_EXPOSURE_COMPENSATION, 1113 ctrl->val, &ret); 1114 break; 1115 1116 case V4L2_CID_POWER_LINE_FREQUENCY: 1117 if (ctrl->val == V4L2_CID_POWER_LINE_FREQUENCY_60HZ) { 1118 value = THP7312_AE_FLICKER_MODE_60; 1119 } else if (ctrl->val == V4L2_CID_POWER_LINE_FREQUENCY_50HZ) { 1120 value = THP7312_AE_FLICKER_MODE_50; 1121 } else { 1122 if (thp7312->fw_version == THP7312_FW_VERSION(40, 3)) { 1123 /* THP7312_AE_FLICKER_MODE_DISABLE is not supported */ 1124 value = THP7312_AE_FLICKER_MODE_50; 1125 } else { 1126 value = THP7312_AE_FLICKER_MODE_DISABLE; 1127 } 1128 } 1129 1130 cci_write(thp7312->regmap, THP7312_REG_AE_FLICKER_MODE, 1131 value, &ret); 1132 break; 1133 1134 case V4L2_CID_SATURATION: 1135 cci_write(thp7312->regmap, THP7312_REG_SATURATION, 1136 ctrl->val, &ret); 1137 break; 1138 1139 case V4L2_CID_CONTRAST: 1140 cci_write(thp7312->regmap, THP7312_REG_CONTRAST, 1141 ctrl->val, &ret); 1142 break; 1143 1144 case V4L2_CID_SHARPNESS: 1145 cci_write(thp7312->regmap, THP7312_REG_SHARPNESS, 1146 ctrl->val, &ret); 1147 break; 1148 1149 default: 1150 break; 1151 } 1152 1153 pm_runtime_mark_last_busy(thp7312->dev); 1154 pm_runtime_put_autosuspend(thp7312->dev); 1155 1156 return ret; 1157} 1158 1159static const struct v4l2_ctrl_ops thp7312_ctrl_ops = { 1160 .s_ctrl = thp7312_s_ctrl, 1161}; 1162 1163/* 1164 * Refer to Documentation/userspace-api/media/drivers/thp7312.rst for details. 1165 */ 1166static const struct v4l2_ctrl_config thp7312_ctrl_focus_method_cdaf = { 1167 .ops = &thp7312_ctrl_ops, 1168 .id = V4L2_CID_THP7312_AUTO_FOCUS_METHOD, 1169 .name = "Auto-Focus Method", 1170 .type = V4L2_CTRL_TYPE_INTEGER, 1171 .min = THP7312_FOCUS_METHOD_CONTRAST, 1172 .def = THP7312_FOCUS_METHOD_CONTRAST, 1173 .max = THP7312_FOCUS_METHOD_CONTRAST, 1174 .step = 1, 1175}; 1176 1177static const struct v4l2_ctrl_config thp7312_ctrl_focus_method_pdaf = { 1178 .ops = &thp7312_ctrl_ops, 1179 .id = V4L2_CID_THP7312_AUTO_FOCUS_METHOD, 1180 .name = "Auto-Focus Method", 1181 .type = V4L2_CTRL_TYPE_INTEGER, 1182 .min = THP7312_FOCUS_METHOD_CONTRAST, 1183 .def = THP7312_FOCUS_METHOD_HYBRID, 1184 .max = THP7312_FOCUS_METHOD_HYBRID, 1185 .step = 1, 1186}; 1187 1188static const struct v4l2_ctrl_config thp7312_v4l2_ctrls_custom[] = { 1189 { 1190 .ops = &thp7312_ctrl_ops, 1191 .id = V4L2_CID_THP7312_LOW_LIGHT_COMPENSATION, 1192 .name = "Low Light Compensation", 1193 .type = V4L2_CTRL_TYPE_BOOLEAN, 1194 .min = 0, 1195 .def = 1, 1196 .max = 1, 1197 .step = 1, 1198 }, { 1199 .ops = &thp7312_ctrl_ops, 1200 .id = V4L2_CID_THP7312_NOISE_REDUCTION_AUTO, 1201 .name = "Noise Reduction Auto", 1202 .type = V4L2_CTRL_TYPE_BOOLEAN, 1203 .min = 0, 1204 .def = 1, 1205 .max = 1, 1206 .step = 1, 1207 }, { 1208 .ops = &thp7312_ctrl_ops, 1209 .id = V4L2_CID_THP7312_NOISE_REDUCTION_ABSOLUTE, 1210 .name = "Noise Reduction Level", 1211 .type = V4L2_CTRL_TYPE_INTEGER, 1212 .min = 0, 1213 .def = 0, 1214 .max = 10, 1215 .step = 1, 1216 }, 1217}; 1218 1219static const s64 exp_bias_qmenu[] = { 1220 -2000, -1667, -1333, -1000, -667, -333, 0, 333, 667, 1000, 1333, 1667, 2000 1221}; 1222 1223static int thp7312_init_controls(struct thp7312_device *thp7312) 1224{ 1225 struct v4l2_ctrl_handler *hdl = &thp7312->ctrl_handler; 1226 struct device *dev = thp7312->dev; 1227 struct v4l2_fwnode_device_properties props; 1228 struct v4l2_ctrl *link_freq; 1229 unsigned int num_controls; 1230 unsigned int i; 1231 u8 af_support; 1232 int ret; 1233 1234 /* 1235 * Check what auto-focus methods the connected sensor supports, if any. 1236 * Firmwares before v90.03 didn't expose the AF_SUPPORT register, 1237 * consider both CDAF and PDAF as supported in that case. 1238 */ 1239 if (thp7312->fw_version >= THP7312_FW_VERSION(90, 3)) { 1240 u64 val; 1241 1242 ret = cci_read(thp7312->regmap, THP7312_REG_AF_SUPPORT, &val, 1243 NULL); 1244 if (ret) 1245 return ret; 1246 1247 af_support = val & (THP7312_AF_SUPPORT_PDAF | 1248 THP7312_AF_SUPPORT_CONTRAST); 1249 } else { 1250 af_support = THP7312_AF_SUPPORT_PDAF 1251 | THP7312_AF_SUPPORT_CONTRAST; 1252 } 1253 1254 num_controls = 14 + ARRAY_SIZE(thp7312_v4l2_ctrls_custom) 1255 + (af_support ? 4 : 0); 1256 1257 v4l2_ctrl_handler_init(hdl, num_controls); 1258 1259 if (af_support) { 1260 const struct v4l2_ctrl_config *af_method; 1261 1262 af_method = af_support & THP7312_AF_SUPPORT_PDAF 1263 ? &thp7312_ctrl_focus_method_pdaf 1264 : &thp7312_ctrl_focus_method_cdaf; 1265 1266 thp7312->focus_state = THP7312_FOCUS_STATE_MANUAL; 1267 1268 thp7312->focus_auto = 1269 v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, 1270 V4L2_CID_FOCUS_AUTO, 1271 0, 1, 1, 1); 1272 thp7312->focus_absolute = 1273 v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, 1274 V4L2_CID_FOCUS_ABSOLUTE, 1275 0, ARRAY_SIZE(thp7312_focus_values), 1276 1, 0); 1277 thp7312->focus_method = 1278 v4l2_ctrl_new_custom(hdl, af_method, NULL); 1279 thp7312->focus_start = 1280 v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, 1281 V4L2_CID_AUTO_FOCUS_START, 1282 1, 1, 1, 1); 1283 1284 v4l2_ctrl_cluster(4, &thp7312->focus_auto); 1285 } 1286 1287 v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_AUTO_WHITE_BALANCE, 1288 0, 1, 1, 1); 1289 /* 32: 1x, 255: 7.95x */ 1290 v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_RED_BALANCE, 1291 32, 255, 1, 64); 1292 /* 32: 1x, 255: 7.95x */ 1293 v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_BLUE_BALANCE, 1294 32, 255, 1, 50); 1295 1296 v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_BRIGHTNESS, 1297 -10, 10, 1, 0); 1298 v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_SATURATION, 1299 0, 31, 1, 10); 1300 v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_CONTRAST, 1301 0, 20, 1, 10); 1302 v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_SHARPNESS, 1303 0, 31, 1, 8); 1304 1305 thp7312->hflip = v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, 1306 V4L2_CID_HFLIP, 0, 1, 1, 0); 1307 thp7312->vflip = v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, 1308 V4L2_CID_VFLIP, 0, 1, 1, 0); 1309 1310 v4l2_ctrl_cluster(2, &thp7312->hflip); 1311 1312 v4l2_ctrl_new_int_menu(hdl, &thp7312_ctrl_ops, 1313 V4L2_CID_AUTO_EXPOSURE_BIAS, 1314 ARRAY_SIZE(exp_bias_qmenu) - 1, 1315 ARRAY_SIZE(exp_bias_qmenu) / 2, exp_bias_qmenu); 1316 1317 v4l2_ctrl_new_std_menu(hdl, &thp7312_ctrl_ops, 1318 V4L2_CID_POWER_LINE_FREQUENCY, 1319 V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0, 1320 V4L2_CID_POWER_LINE_FREQUENCY_50HZ); 1321 1322 thp7312->link_freq = thp7312_mode_info_data[0].rates[0].link_freq; 1323 1324 link_freq = v4l2_ctrl_new_int_menu(hdl, &thp7312_ctrl_ops, 1325 V4L2_CID_LINK_FREQ, 0, 0, 1326 &thp7312->link_freq); 1327 1328 /* Set properties from fwnode (e.g. rotation, orientation). */ 1329 ret = v4l2_fwnode_device_parse(dev, &props); 1330 if (ret) { 1331 dev_err(dev, "Failed to parse fwnode: %d\n", ret); 1332 goto error; 1333 } 1334 1335 ret = v4l2_ctrl_new_fwnode_properties(hdl, &thp7312_ctrl_ops, &props); 1336 if (ret) { 1337 dev_err(dev, "Failed to create new v4l2 ctrl for fwnode properties: %d\n", ret); 1338 goto error; 1339 } 1340 1341 for (i = 0; i < ARRAY_SIZE(thp7312_v4l2_ctrls_custom); i++) { 1342 const struct v4l2_ctrl_config *ctrl_cfg = 1343 &thp7312_v4l2_ctrls_custom[i]; 1344 struct v4l2_ctrl *ctrl; 1345 1346 ctrl = v4l2_ctrl_new_custom(hdl, ctrl_cfg, NULL); 1347 1348 if (ctrl_cfg->id == V4L2_CID_THP7312_NOISE_REDUCTION_AUTO) 1349 thp7312->noise_reduction_auto = ctrl; 1350 else if (ctrl_cfg->id == V4L2_CID_THP7312_NOISE_REDUCTION_ABSOLUTE) 1351 thp7312->noise_reduction_absolute = ctrl; 1352 } 1353 1354 v4l2_ctrl_cluster(2, &thp7312->noise_reduction_auto); 1355 1356 if (hdl->error) { 1357 dev_err(dev, "v4l2_ctrl_handler error\n"); 1358 ret = hdl->error; 1359 goto error; 1360 } 1361 1362 link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1363 1364 return ret; 1365 1366error: 1367 v4l2_ctrl_handler_free(hdl); 1368 return ret; 1369} 1370 1371/* ----------------------------------------------------------------------------- 1372 * Firmware Update 1373 */ 1374 1375/* 1376 * The firmware data is made of 128kB of RAM firmware, followed by a 1377 * variable-size "header". Both are stored in flash memory. 1378 */ 1379#define THP7312_FW_RAM_SIZE (128 * 1024) 1380#define THP7312_FW_MIN_SIZE (THP7312_FW_RAM_SIZE + 4) 1381#define THP7312_FW_MAX_SIZE (THP7312_FW_RAM_SIZE + 64 * 1024) 1382 1383/* 1384 * Data is first uploaded to the THP7312 128kB SRAM, and then written to flash. 1385 * The SRAM is exposed over I2C as 32kB banks, and up to 4kB of data can be 1386 * transferred in a single I2C write. 1387 */ 1388#define THP7312_RAM_BANK_SIZE (32 * 1024) 1389#define THP7312_FW_DOWNLOAD_UNIT (4 * 1024) 1390 1391#define THP7312_FLASH_MEMORY_ERASE_TIMEOUT 40 1392 1393#define THP7312_FLASH_MAX_REG_READ_SIZE 10 1394#define THP7312_FLASH_MAX_REG_DATA_SIZE 10 1395 1396static const u8 thp7312_cmd_config_flash_mem_if[] = { 1397 0xd5, 0x18, 0x00, 0x00, 0x00, 0x80 1398}; 1399 1400static const u8 thp7312_cmd_write_to_reg[] = { 1401 0xd5, 0x0c, 0x80, 0x00, 0x00, 0x00 1402}; 1403 1404static const u8 thp7312_cmd_read_reg[] = { 1405 0xd5, 0x04 1406}; 1407 1408/* 1409 * THP7312 Write data from RAM to Flash Memory 1410 * Command ID FF700F 1411 * Format: FF700F AA AA AA BB BB BB 1412 * AA AA AA: destination start address 1413 * BB BB BB: (write size - 1) 1414 * Source address always starts from 0 1415 */ 1416static const u8 thp7312_cmd_write_ram_to_flash[] = { 0xff, 0x70, 0x0f }; 1417 1418/* 1419 * THP7312 Calculate CRC command 1420 * Command ID: FF70 09 1421 * Format: FF70 09 AA AA AA BB BB BB 1422 * AA AA AA: Start address of calculation 1423 * BB BB BB: (calculate size - 1) 1424 */ 1425static const u8 thp7312_cmd_calc_crc[] = { 0xff, 0x70, 0x09 }; 1426 1427static const u8 thp7312_jedec_rdid[] = { SPINOR_OP_RDID, 0x00, 0x00, 0x00 }; 1428static const u8 thp7312_jedec_rdsr[] = { SPINOR_OP_RDSR, 0x00, 0x00, 0x00 }; 1429static const u8 thp7312_jedec_wen[] = { SPINOR_OP_WREN }; 1430 1431static int thp7312_read_firmware_version(struct thp7312_device *thp7312) 1432{ 1433 u64 val = 0; 1434 int ret = 0; 1435 u8 major; 1436 u8 minor; 1437 1438 cci_read(thp7312->regmap, THP7312_REG_FIRMWARE_VERSION_1, &val, &ret); 1439 major = val; 1440 1441 cci_read(thp7312->regmap, THP7312_REG_FIRMWARE_VERSION_2, &val, &ret); 1442 minor = val; 1443 1444 thp7312->fw_version = THP7312_FW_VERSION(major, minor); 1445 return ret; 1446} 1447 1448static int thp7312_write_buf(struct thp7312_device *thp7312, 1449 const u8 *write_buf, u16 write_size) 1450{ 1451 struct i2c_client *client = to_i2c_client(thp7312->dev); 1452 int ret; 1453 1454 ret = i2c_master_send(client, write_buf, write_size); 1455 return ret >= 0 ? 0 : ret; 1456} 1457 1458static int __thp7312_flash_reg_write(struct thp7312_device *thp7312, 1459 const u8 *write_buf, u16 write_size) 1460{ 1461 struct device *dev = thp7312->dev; 1462 u8 temp_write_buf[THP7312_FLASH_MAX_REG_DATA_SIZE + 2]; 1463 int ret; 1464 1465 if (write_size > THP7312_FLASH_MAX_REG_DATA_SIZE) { 1466 dev_err(dev, "%s: Write size error size = %d\n", 1467 __func__, write_size); 1468 return -EINVAL; 1469 } 1470 1471 ret = thp7312_write_buf(thp7312, thp7312_cmd_config_flash_mem_if, 1472 sizeof(thp7312_cmd_config_flash_mem_if)); 1473 if (ret < 0) { 1474 dev_err(dev, "%s: Failed to config flash memory IF: %d\n", 1475 __func__, ret); 1476 return ret; 1477 } 1478 1479 temp_write_buf[0] = 0xd5; 1480 temp_write_buf[1] = 0x00; 1481 memcpy((temp_write_buf + 2), write_buf, write_size); 1482 ret = thp7312_write_buf(thp7312, temp_write_buf, write_size + 2); 1483 if (ret < 0) 1484 return ret; 1485 1486 thp7312_write_buf(thp7312, thp7312_cmd_write_to_reg, 1487 sizeof(thp7312_cmd_write_to_reg)); 1488 1489 return 0; 1490} 1491 1492static int __thp7312_flash_reg_read(struct thp7312_device *thp7312, 1493 const u8 *write_buf, u16 write_size, 1494 u8 *read_buf, u16 read_size) 1495{ 1496 struct i2c_client *client = to_i2c_client(thp7312->dev); 1497 struct i2c_msg msgs[2]; 1498 int ret; 1499 1500 ret = __thp7312_flash_reg_write(thp7312, write_buf, write_size); 1501 if (ret) 1502 return ret; 1503 1504 msgs[0].addr = client->addr; 1505 msgs[0].flags = 0; 1506 msgs[0].len = sizeof(thp7312_cmd_read_reg), 1507 msgs[0].buf = (u8 *)thp7312_cmd_read_reg; 1508 1509 msgs[1].addr = client->addr; 1510 msgs[1].flags = I2C_M_RD; 1511 msgs[1].len = read_size; 1512 msgs[1].buf = read_buf; 1513 1514 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); 1515 return ret >= 0 ? 0 : ret; 1516} 1517 1518#define thp7312_flash_reg_write(thp7312, wrbuf) \ 1519 __thp7312_flash_reg_write(thp7312, wrbuf, sizeof(wrbuf)) 1520 1521#define thp7312_flash_reg_read(thp7312, wrbuf, rdbuf) \ 1522 __thp7312_flash_reg_read(thp7312, wrbuf, sizeof(wrbuf), \ 1523 rdbuf, sizeof(rdbuf)) 1524 1525static enum fw_upload_err thp7312_fw_prepare_config(struct thp7312_device *thp7312) 1526{ 1527 struct device *dev = thp7312->dev; 1528 int ret; 1529 1530 ret = cci_write(thp7312->regmap, THP7312_REG_FW_MEMORY_IO_SETTING, 1531 THP7312_FW_MEMORY_IO_GPIO0, NULL); 1532 if (ret) { 1533 dev_err(dev, "Failed to set flash memory I/O\n"); 1534 return FW_UPLOAD_ERR_HW_ERROR; 1535 } 1536 1537 /* Set max drivability. */ 1538 ret = cci_write(thp7312->regmap, THP7312_REG_FW_DRIVABILITY, 0x00777777, 1539 NULL); 1540 if (ret) { 1541 dev_err(dev, "Failed to set drivability: %d\n", ret); 1542 return FW_UPLOAD_ERR_HW_ERROR; 1543 } 1544 1545 return FW_UPLOAD_ERR_NONE; 1546} 1547 1548static enum fw_upload_err thp7312_fw_prepare_check(struct thp7312_device *thp7312) 1549{ 1550 struct device *dev = thp7312->dev; 1551 u8 read_buf[3] = { 0 }; 1552 int ret; 1553 1554 /* Get JEDEC ID */ 1555 ret = thp7312_flash_reg_read(thp7312, thp7312_jedec_rdid, read_buf); 1556 if (ret) { 1557 dev_err(dev, "Failed to get JEDEC ID: %d\n", ret); 1558 return FW_UPLOAD_ERR_HW_ERROR; 1559 } 1560 1561 dev_dbg(dev, "Flash Memory: JEDEC ID = 0x%x 0x%x 0x%x\n", 1562 read_buf[0], read_buf[1], read_buf[2]); 1563 1564 return FW_UPLOAD_ERR_NONE; 1565} 1566 1567static enum fw_upload_err thp7312_fw_prepare_reset(struct thp7312_device *thp7312) 1568{ 1569 struct device *dev = thp7312->dev; 1570 int ret; 1571 1572 ret = cci_write(thp7312->regmap, THP7312_REG_FW_RESET_FLASH, 0x81, NULL); 1573 if (ret) { 1574 dev_err(dev, "Failed to reset flash memory: %d\n", ret); 1575 return FW_UPLOAD_ERR_HW_ERROR; 1576 } 1577 1578 return FW_UPLOAD_ERR_NONE; 1579} 1580 1581/* TODO: Erase only the amount of blocks necessary */ 1582static enum fw_upload_err thp7312_flash_erase(struct thp7312_device *thp7312) 1583{ 1584 struct device *dev = thp7312->dev; 1585 u8 read_buf[1] = { 0 }; 1586 unsigned int i; 1587 u8 block; 1588 int ret; 1589 1590 for (block = 0; block < 3; block++) { 1591 const u8 jedec_se[] = { SPINOR_OP_SE, block, 0x00, 0x00 }; 1592 1593 ret = thp7312_flash_reg_write(thp7312, thp7312_jedec_wen); 1594 if (ret < 0) { 1595 dev_err(dev, "Failed to enable flash for writing\n"); 1596 return FW_UPLOAD_ERR_RW_ERROR; 1597 } 1598 1599 ret = thp7312_flash_reg_write(thp7312, jedec_se); 1600 if (ret < 0) { 1601 dev_err(dev, "Failed to erase flash sector\n"); 1602 return FW_UPLOAD_ERR_RW_ERROR; 1603 } 1604 1605 for (i = 0; i < THP7312_FLASH_MEMORY_ERASE_TIMEOUT; i++) { 1606 usleep_range(100000, 101000); 1607 thp7312_flash_reg_read(thp7312, thp7312_jedec_rdsr, 1608 read_buf); 1609 1610 /* Check Busy bit. Busy == 0x0 means erase complete. */ 1611 if (!(read_buf[0] & SR_WIP)) 1612 break; 1613 } 1614 1615 if (i == THP7312_FLASH_MEMORY_ERASE_TIMEOUT) 1616 return FW_UPLOAD_ERR_TIMEOUT; 1617 } 1618 1619 thp7312_flash_reg_read(thp7312, thp7312_jedec_rdsr, read_buf); 1620 1621 /* Check WEL bit. */ 1622 if (read_buf[0] & SR_WEL) 1623 return FW_UPLOAD_ERR_HW_ERROR; 1624 1625 return FW_UPLOAD_ERR_NONE; 1626} 1627 1628static enum fw_upload_err 1629thp7312_write_download_data_by_unit(struct thp7312_device *thp7312, 1630 unsigned int addr, const u8 *data, 1631 unsigned int size) 1632{ 1633 struct device *dev = thp7312->dev; 1634 u8 *write_buf = thp7312->fw_write_buf; 1635 int ret; 1636 1637 dev_dbg(dev, "%s: addr = 0x%04x, data = 0x%p, size = %u\n", 1638 __func__, addr, data, size); 1639 1640 write_buf[0] = (addr >> 8) & 0xff; 1641 write_buf[1] = (addr >> 0) & 0xff; 1642 memcpy(&write_buf[2], data, size); 1643 1644 /* 1645 * THP7312 Firmware download to RAM 1646 * Command ID (address to download): 0x0000 - 0x7fff 1647 * Format:: 0000 XX XX XX ........ XX 1648 */ 1649 ret = thp7312_write_buf(thp7312, write_buf, size + 2); 1650 if (ret < 0) 1651 dev_err(dev, "Unit transfer ERROR %s(): ret = %d\n", __func__, ret); 1652 1653 return ret >= 0 ? FW_UPLOAD_ERR_NONE : FW_UPLOAD_ERR_RW_ERROR; 1654} 1655 1656static enum fw_upload_err thp7312_fw_load_to_ram(struct thp7312_device *thp7312, 1657 const u8 *data, u32 size) 1658{ 1659 struct device *dev = thp7312->dev; 1660 enum fw_upload_err ret; 1661 unsigned int num_banks; 1662 unsigned int i, j; 1663 1664 num_banks = DIV_ROUND_UP(size, THP7312_RAM_BANK_SIZE); 1665 1666 dev_dbg(dev, "%s: loading %u bytes in SRAM (%u banks)\n", __func__, 1667 size, num_banks); 1668 1669 for (i = 0; i < num_banks; i++) { 1670 const u32 bank_addr = 0x10000000 | (i * THP7312_RAM_BANK_SIZE); 1671 unsigned int bank_size; 1672 unsigned int num_chunks; 1673 1674 ret = cci_write(thp7312->regmap, THP7312_REG_FW_DEST_BANK_ADDR, 1675 bank_addr, NULL); 1676 if (ret) 1677 return FW_UPLOAD_ERR_HW_ERROR; 1678 1679 bank_size = min_t(u32, size, THP7312_RAM_BANK_SIZE); 1680 num_chunks = DIV_ROUND_UP(bank_size, THP7312_FW_DOWNLOAD_UNIT); 1681 1682 dev_dbg(dev, "%s: loading %u bytes in SRAM bank %u (%u chunks)\n", 1683 __func__, bank_size, i, num_chunks); 1684 1685 for (j = 0 ; j < num_chunks; j++) { 1686 unsigned int chunk_addr; 1687 unsigned int chunk_size; 1688 1689 chunk_addr = j * THP7312_FW_DOWNLOAD_UNIT; 1690 chunk_size = min_t(u32, size, THP7312_FW_DOWNLOAD_UNIT); 1691 1692 ret = thp7312_write_download_data_by_unit(thp7312, chunk_addr, 1693 data, chunk_size); 1694 if (ret != FW_UPLOAD_ERR_NONE) { 1695 dev_err(dev, "Unit transfer ERROR at bank transfer %s(): %d\n", 1696 __func__, j); 1697 return ret; 1698 } 1699 1700 data += chunk_size; 1701 size -= chunk_size; 1702 } 1703 } 1704 1705 return FW_UPLOAD_ERR_NONE; 1706} 1707 1708static enum fw_upload_err thp7312_fw_write_to_flash(struct thp7312_device *thp7312, 1709 u32 dest, u32 write_size) 1710{ 1711 u8 command[sizeof(thp7312_cmd_write_ram_to_flash) + 6]; 1712 static const u32 cmd_size = sizeof(thp7312_cmd_write_ram_to_flash); 1713 u64 val; 1714 int ret; 1715 1716 memcpy(command, thp7312_cmd_write_ram_to_flash, cmd_size); 1717 1718 command[cmd_size] = (dest & 0xff0000) >> 16; 1719 command[cmd_size + 1] = (dest & 0x00ff00) >> 8; 1720 command[cmd_size + 2] = (dest & 0x0000ff); 1721 command[cmd_size + 3] = ((write_size - 1) & 0xff0000) >> 16; 1722 command[cmd_size + 4] = ((write_size - 1) & 0x00ff00) >> 8; 1723 command[cmd_size + 5] = ((write_size - 1) & 0x0000ff); 1724 1725 ret = thp7312_write_buf(thp7312, command, sizeof(command)); 1726 if (ret < 0) 1727 return FW_UPLOAD_ERR_RW_ERROR; 1728 1729 usleep_range(8000000, 8100000); 1730 1731 ret = cci_read(thp7312->regmap, THP7312_REG_FW_VERIFY_RESULT, &val, 1732 NULL); 1733 if (ret < 0) 1734 return FW_UPLOAD_ERR_RW_ERROR; 1735 1736 return val ? FW_UPLOAD_ERR_HW_ERROR : FW_UPLOAD_ERR_NONE; 1737} 1738 1739static enum fw_upload_err thp7312_fw_check_crc(struct thp7312_device *thp7312, 1740 const u8 *fw_data, u32 fw_size) 1741{ 1742 struct device *dev = thp7312->dev; 1743 u16 header_size = fw_size - THP7312_FW_RAM_SIZE; 1744 u8 command[sizeof(thp7312_cmd_calc_crc) + 6]; 1745 static const u32 cmd_size = sizeof(thp7312_cmd_calc_crc); 1746 u32 size = THP7312_FW_RAM_SIZE - 4; 1747 u32 fw_crc; 1748 u64 crc; 1749 int ret; 1750 1751 memcpy(command, thp7312_cmd_calc_crc, cmd_size); 1752 1753 command[cmd_size] = 0; 1754 command[cmd_size + 1] = (header_size >> 8) & 0xff; 1755 command[cmd_size + 2] = header_size & 0xff; 1756 1757 command[cmd_size + 3] = (size >> 16) & 0xff; 1758 command[cmd_size + 4] = (size >> 8) & 0xff; 1759 command[cmd_size + 5] = size & 0xff; 1760 1761 ret = thp7312_write_buf(thp7312, command, sizeof(command)); 1762 if (ret < 0) 1763 return FW_UPLOAD_ERR_RW_ERROR; 1764 1765 usleep_range(2000000, 2100000); 1766 1767 fw_crc = get_unaligned_be32(&fw_data[fw_size - 4]); 1768 1769 ret = cci_read(thp7312->regmap, THP7312_REG_FW_CRC_RESULT, &crc, NULL); 1770 if (ret < 0) 1771 return FW_UPLOAD_ERR_RW_ERROR; 1772 1773 if (fw_crc != crc) { 1774 dev_err(dev, "CRC mismatch: firmware 0x%08x, flash 0x%08llx\n", 1775 fw_crc, crc); 1776 return FW_UPLOAD_ERR_HW_ERROR; 1777 } 1778 1779 return FW_UPLOAD_ERR_NONE; 1780} 1781 1782static enum fw_upload_err thp7312_fw_prepare(struct fw_upload *fw_upload, 1783 const u8 *data, u32 size) 1784{ 1785 struct thp7312_device *thp7312 = fw_upload->dd_handle; 1786 struct device *dev = thp7312->dev; 1787 enum fw_upload_err ret; 1788 1789 mutex_lock(&thp7312->fw_lock); 1790 thp7312->fw_cancel = false; 1791 mutex_unlock(&thp7312->fw_lock); 1792 1793 if (size < THP7312_FW_MIN_SIZE || size > THP7312_FW_MAX_SIZE) { 1794 dev_err(dev, "%s: Invalid firmware size %d; must be between %d and %d\n", 1795 __func__, size, THP7312_FW_MIN_SIZE, THP7312_FW_MAX_SIZE); 1796 return FW_UPLOAD_ERR_INVALID_SIZE; 1797 } 1798 1799 ret = thp7312_fw_prepare_config(thp7312); 1800 if (ret != FW_UPLOAD_ERR_NONE) 1801 return ret; 1802 1803 ret = thp7312_fw_prepare_check(thp7312); 1804 if (ret != FW_UPLOAD_ERR_NONE) 1805 return ret; 1806 1807 ret = thp7312_fw_prepare_reset(thp7312); 1808 if (ret != FW_UPLOAD_ERR_NONE) 1809 return ret; 1810 1811 mutex_lock(&thp7312->fw_lock); 1812 ret = thp7312->fw_cancel ? FW_UPLOAD_ERR_CANCELED : FW_UPLOAD_ERR_NONE; 1813 mutex_unlock(&thp7312->fw_lock); 1814 1815 return ret; 1816} 1817 1818static enum fw_upload_err thp7312_fw_write(struct fw_upload *fw_upload, 1819 const u8 *data, u32 offset, 1820 u32 size, u32 *written) 1821{ 1822 struct thp7312_device *thp7312 = fw_upload->dd_handle; 1823 struct device *dev = thp7312->dev; 1824 u16 header_size = size - THP7312_FW_RAM_SIZE; 1825 enum fw_upload_err ret; 1826 bool cancel; 1827 1828 mutex_lock(&thp7312->fw_lock); 1829 cancel = thp7312->fw_cancel; 1830 mutex_unlock(&thp7312->fw_lock); 1831 1832 if (cancel) 1833 return FW_UPLOAD_ERR_CANCELED; 1834 1835 ret = thp7312_flash_erase(thp7312); 1836 if (ret != FW_UPLOAD_ERR_NONE) 1837 return ret; 1838 1839 ret = thp7312_fw_load_to_ram(thp7312, data, THP7312_FW_RAM_SIZE); 1840 if (ret != FW_UPLOAD_ERR_NONE) 1841 return ret; 1842 1843 ret = thp7312_fw_write_to_flash(thp7312, 0, 0x1ffff); 1844 if (ret != FW_UPLOAD_ERR_NONE) 1845 return ret; 1846 1847 ret = thp7312_fw_load_to_ram(thp7312, data + THP7312_FW_RAM_SIZE, header_size); 1848 if (ret != FW_UPLOAD_ERR_NONE) 1849 return ret; 1850 1851 ret = thp7312_fw_write_to_flash(thp7312, 0x20000, header_size - 1); 1852 if (ret != FW_UPLOAD_ERR_NONE) 1853 return ret; 1854 1855 ret = thp7312_fw_check_crc(thp7312, data, size); 1856 if (ret != FW_UPLOAD_ERR_NONE) 1857 return ret; 1858 1859 dev_info(dev, "Successfully wrote firmware\n"); 1860 1861 *written = size; 1862 return FW_UPLOAD_ERR_NONE; 1863} 1864 1865static enum fw_upload_err thp7312_fw_poll_complete(struct fw_upload *fw_upload) 1866{ 1867 return FW_UPLOAD_ERR_NONE; 1868} 1869 1870/* 1871 * This may be called asynchronously with an on-going update. All other 1872 * functions are called sequentially in a single thread. To avoid contention on 1873 * register accesses, only update the cancel_request flag. Other functions will 1874 * check this flag and handle the cancel request synchronously. 1875 */ 1876static void thp7312_fw_cancel(struct fw_upload *fw_upload) 1877{ 1878 struct thp7312_device *thp7312 = fw_upload->dd_handle; 1879 1880 mutex_lock(&thp7312->fw_lock); 1881 thp7312->fw_cancel = true; 1882 mutex_unlock(&thp7312->fw_lock); 1883} 1884 1885static const struct fw_upload_ops thp7312_fw_upload_ops = { 1886 .prepare = thp7312_fw_prepare, 1887 .write = thp7312_fw_write, 1888 .poll_complete = thp7312_fw_poll_complete, 1889 .cancel = thp7312_fw_cancel, 1890}; 1891 1892static int thp7312_register_flash_mode(struct thp7312_device *thp7312) 1893{ 1894 struct device *dev = thp7312->dev; 1895 struct fw_upload *fwl; 1896 u64 val; 1897 int ret; 1898 1899 dev_info(dev, "booted in flash mode\n"); 1900 1901 mutex_init(&thp7312->fw_lock); 1902 1903 thp7312->fw_write_buf = devm_kzalloc(dev, THP7312_FW_DOWNLOAD_UNIT + 2, 1904 GFP_KERNEL); 1905 if (!thp7312->fw_write_buf) 1906 return -ENOMEM; 1907 1908 ret = __thp7312_power_on(thp7312); 1909 if (ret < 0) 1910 return dev_err_probe(dev, ret, "Failed to power on\n"); 1911 1912 ret = cci_read(thp7312->regmap, THP7312_REG_FW_STATUS, &val, NULL); 1913 if (ret) { 1914 dev_err_probe(dev, ret, "Camera status read failed\n"); 1915 goto error; 1916 } 1917 1918 fwl = firmware_upload_register(THIS_MODULE, dev, "thp7312-firmware", 1919 &thp7312_fw_upload_ops, thp7312); 1920 if (IS_ERR(fwl)) { 1921 ret = PTR_ERR(fwl); 1922 dev_err_probe(dev, ret, "Failed to register firmware upload\n"); 1923 goto error; 1924 } 1925 1926 thp7312->fwl = fwl; 1927 return 0; 1928 1929error: 1930 __thp7312_power_off(thp7312); 1931 return ret; 1932} 1933 1934/* ----------------------------------------------------------------------------- 1935 * Probe & Remove 1936 */ 1937 1938static int thp7312_get_regulators(struct thp7312_device *thp7312) 1939{ 1940 unsigned int i; 1941 1942 for (i = 0; i < ARRAY_SIZE(thp7312->supplies); i++) 1943 thp7312->supplies[i].supply = thp7312_supply_name[i]; 1944 1945 return devm_regulator_bulk_get(thp7312->dev, 1946 ARRAY_SIZE(thp7312->supplies), 1947 thp7312->supplies); 1948} 1949 1950static int thp7312_sensor_parse_dt(struct thp7312_device *thp7312, 1951 struct fwnode_handle *node) 1952{ 1953 struct device *dev = thp7312->dev; 1954 struct thp7312_sensor *sensor; 1955 const char *model; 1956 u8 data_lanes[4]; 1957 u32 values[4]; 1958 unsigned int i; 1959 u32 reg; 1960 int ret; 1961 1962 /* Retrieve the sensor index from the reg property. */ 1963 ret = fwnode_property_read_u32(node, "reg", ®); 1964 if (ret < 0) { 1965 dev_err(dev, "'reg' property missing in sensor node\n"); 1966 return -EINVAL; 1967 } 1968 1969 if (reg >= ARRAY_SIZE(thp7312->sensors)) { 1970 dev_err(dev, "Out-of-bounds 'reg' value %u\n", reg); 1971 return -EINVAL; 1972 } 1973 1974 sensor = &thp7312->sensors[reg]; 1975 if (sensor->info) { 1976 dev_err(dev, "Duplicate entry for sensor %u\n", reg); 1977 return -EINVAL; 1978 } 1979 1980 ret = fwnode_property_read_string(node, "thine,model", &model); 1981 if (ret < 0) { 1982 dev_err(dev, "'thine,model' property missing in sensor node\n"); 1983 return -EINVAL; 1984 } 1985 1986 for (i = 0; i < ARRAY_SIZE(thp7312_sensor_info); i++) { 1987 const struct thp7312_sensor_info *info = 1988 &thp7312_sensor_info[i]; 1989 1990 if (!strcmp(info->model, model)) { 1991 sensor->info = info; 1992 break; 1993 } 1994 } 1995 1996 if (!sensor->info) { 1997 dev_err(dev, "Unsupported sensor model %s\n", model); 1998 return -EINVAL; 1999 } 2000 2001 ret = fwnode_property_read_u32_array(node, "data-lanes", values, 2002 ARRAY_SIZE(values)); 2003 if (ret < 0) { 2004 dev_err(dev, "Failed to read property data-lanes: %d\n", ret); 2005 return ret; 2006 } 2007 2008 for (i = 0; i < ARRAY_SIZE(data_lanes); ++i) 2009 data_lanes[i] = values[i]; 2010 2011 ret = thp7312_map_data_lanes(&sensor->lane_remap, data_lanes, 2012 ARRAY_SIZE(data_lanes)); 2013 if (ret) { 2014 dev_err(dev, "Invalid sensor@%u data-lanes value\n", reg); 2015 return ret; 2016 } 2017 2018 return 0; 2019} 2020 2021static int thp7312_parse_dt(struct thp7312_device *thp7312) 2022{ 2023 struct v4l2_fwnode_endpoint ep = { 2024 .bus_type = V4L2_MBUS_CSI2_DPHY, 2025 }; 2026 struct device *dev = thp7312->dev; 2027 struct fwnode_handle *endpoint; 2028 struct fwnode_handle *sensors; 2029 unsigned int num_sensors = 0; 2030 struct fwnode_handle *node; 2031 int ret; 2032 2033 endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL); 2034 if (!endpoint) 2035 return dev_err_probe(dev, -EINVAL, "Endpoint node not found\n"); 2036 2037 ret = v4l2_fwnode_endpoint_parse(endpoint, &ep); 2038 fwnode_handle_put(endpoint); 2039 if (ret) 2040 return dev_err_probe(dev, ret, "Could not parse endpoint\n"); 2041 2042 ret = thp7312_map_data_lanes(&thp7312->lane_remap, 2043 ep.bus.mipi_csi2.data_lanes, 2044 ep.bus.mipi_csi2.num_data_lanes); 2045 if (ret) { 2046 dev_err(dev, "Invalid data-lanes value\n"); 2047 return ret; 2048 } 2049 2050 /* 2051 * The thine,boot-mode property is optional and default to 2052 * THP7312_BOOT_MODE_SPI_MASTER (1). 2053 */ 2054 thp7312->boot_mode = THP7312_BOOT_MODE_SPI_MASTER; 2055 ret = device_property_read_u32(dev, "thine,boot-mode", 2056 &thp7312->boot_mode); 2057 if (ret && ret != -EINVAL) 2058 return dev_err_probe(dev, ret, "Property '%s' is invalid\n", 2059 "thine,boot-mode"); 2060 2061 if (thp7312->boot_mode != THP7312_BOOT_MODE_2WIRE_SLAVE && 2062 thp7312->boot_mode != THP7312_BOOT_MODE_SPI_MASTER) 2063 return dev_err_probe(dev, -EINVAL, "Invalid '%s' value %u\n", 2064 "thine,boot-mode", thp7312->boot_mode); 2065 2066 /* Sensors */ 2067 sensors = device_get_named_child_node(dev, "sensors"); 2068 if (!sensors) { 2069 dev_err(dev, "'sensors' child node not found\n"); 2070 return -EINVAL; 2071 } 2072 2073 fwnode_for_each_available_child_node(sensors, node) { 2074 if (fwnode_name_eq(node, "sensor")) { 2075 if (!thp7312_sensor_parse_dt(thp7312, node)) 2076 num_sensors++; 2077 } 2078 } 2079 2080 fwnode_handle_put(sensors); 2081 2082 if (!num_sensors) { 2083 dev_err(dev, "No sensor found\n"); 2084 return -EINVAL; 2085 } 2086 2087 return 0; 2088} 2089 2090static int thp7312_probe(struct i2c_client *client) 2091{ 2092 struct device *dev = &client->dev; 2093 struct thp7312_device *thp7312; 2094 int ret; 2095 2096 thp7312 = devm_kzalloc(dev, sizeof(*thp7312), GFP_KERNEL); 2097 if (!thp7312) 2098 return -ENOMEM; 2099 2100 thp7312->dev = dev; 2101 2102 thp7312->regmap = devm_cci_regmap_init_i2c(client, 16); 2103 if (IS_ERR(thp7312->regmap)) 2104 return dev_err_probe(dev, PTR_ERR(thp7312->regmap), 2105 "Unable to initialize I2C\n"); 2106 2107 ret = thp7312_parse_dt(thp7312); 2108 if (ret < 0) 2109 return ret; 2110 2111 ret = thp7312_get_regulators(thp7312); 2112 if (ret) 2113 return dev_err_probe(dev, ret, "Failed to get regulators\n"); 2114 2115 thp7312->iclk = devm_clk_get(dev, NULL); 2116 if (IS_ERR(thp7312->iclk)) 2117 return dev_err_probe(dev, PTR_ERR(thp7312->iclk), 2118 "Failed to get iclk\n"); 2119 2120 thp7312->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); 2121 if (IS_ERR(thp7312->reset_gpio)) 2122 return dev_err_probe(dev, PTR_ERR(thp7312->reset_gpio), 2123 "Failed to get reset gpio\n"); 2124 2125 if (thp7312->boot_mode == THP7312_BOOT_MODE_2WIRE_SLAVE) 2126 return thp7312_register_flash_mode(thp7312); 2127 2128 v4l2_i2c_subdev_init(&thp7312->sd, client, &thp7312_subdev_ops); 2129 thp7312->sd.internal_ops = &thp7312_internal_ops; 2130 thp7312->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; 2131 thp7312->pad.flags = MEDIA_PAD_FL_SOURCE; 2132 thp7312->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 2133 2134 ret = media_entity_pads_init(&thp7312->sd.entity, 1, &thp7312->pad); 2135 if (ret) 2136 return ret; 2137 2138 /* 2139 * Enable power management. The driver supports runtime PM, but needs to 2140 * work when runtime PM is disabled in the kernel. To that end, power 2141 * the device manually here. 2142 */ 2143 ret = thp7312_power_on(thp7312); 2144 if (ret) 2145 goto err_entity_cleanup; 2146 2147 ret = thp7312_read_firmware_version(thp7312); 2148 if (ret < 0) { 2149 dev_err(dev, "Camera is not found\n"); 2150 goto err_power_off; 2151 } 2152 2153 ret = thp7312_init_controls(thp7312); 2154 if (ret) { 2155 dev_err(dev, "Failed to initialize controls\n"); 2156 goto err_power_off; 2157 } 2158 2159 thp7312->sd.ctrl_handler = &thp7312->ctrl_handler; 2160 thp7312->sd.state_lock = thp7312->ctrl_handler.lock; 2161 2162 ret = v4l2_subdev_init_finalize(&thp7312->sd); 2163 if (ret < 0) { 2164 dev_err(dev, "Subdev active state initialization failed\n"); 2165 goto err_free_ctrls; 2166 } 2167 2168 /* 2169 * Enable runtime PM with autosuspend. As the device has been powered 2170 * manually, mark it as active, and increase the usage count without 2171 * resuming the device. 2172 */ 2173 pm_runtime_set_active(dev); 2174 pm_runtime_get_noresume(dev); 2175 pm_runtime_enable(dev); 2176 pm_runtime_set_autosuspend_delay(dev, 1000); 2177 pm_runtime_use_autosuspend(dev); 2178 2179 ret = v4l2_async_register_subdev(&thp7312->sd); 2180 if (ret < 0) { 2181 dev_err(dev, "Subdev registration failed\n"); 2182 goto err_pm; 2183 } 2184 2185 /* 2186 * Decrease the PM usage count. The device will get suspended after the 2187 * autosuspend delay, turning the power off. 2188 */ 2189 pm_runtime_mark_last_busy(dev); 2190 pm_runtime_put_autosuspend(dev); 2191 2192 dev_info(dev, "THP7312 firmware version %02u.%02u\n", 2193 THP7312_FW_VERSION_MAJOR(thp7312->fw_version), 2194 THP7312_FW_VERSION_MINOR(thp7312->fw_version)); 2195 2196 return 0; 2197 2198err_pm: 2199 pm_runtime_disable(dev); 2200 pm_runtime_put_noidle(dev); 2201 v4l2_subdev_cleanup(&thp7312->sd); 2202err_free_ctrls: 2203 v4l2_ctrl_handler_free(&thp7312->ctrl_handler); 2204err_power_off: 2205 thp7312_power_off(thp7312); 2206err_entity_cleanup: 2207 media_entity_cleanup(&thp7312->sd.entity); 2208 return ret; 2209} 2210 2211static void thp7312_remove(struct i2c_client *client) 2212{ 2213 struct v4l2_subdev *sd = i2c_get_clientdata(client); 2214 struct thp7312_device *thp7312 = to_thp7312_dev(sd); 2215 2216 if (thp7312->boot_mode == THP7312_BOOT_MODE_2WIRE_SLAVE) { 2217 firmware_upload_unregister(thp7312->fwl); 2218 __thp7312_power_off(thp7312); 2219 return; 2220 } 2221 2222 v4l2_async_unregister_subdev(&thp7312->sd); 2223 v4l2_subdev_cleanup(&thp7312->sd); 2224 media_entity_cleanup(&thp7312->sd.entity); 2225 v4l2_ctrl_handler_free(&thp7312->ctrl_handler); 2226 2227 /* 2228 * Disable runtime PM. In case runtime PM is disabled in the kernel, 2229 * make sure to turn power off manually. 2230 */ 2231 pm_runtime_disable(thp7312->dev); 2232 if (!pm_runtime_status_suspended(thp7312->dev)) 2233 thp7312_power_off(thp7312); 2234 pm_runtime_set_suspended(thp7312->dev); 2235} 2236 2237static const struct of_device_id thp7312_dt_ids[] = { 2238 { .compatible = "thine,thp7312" }, 2239 { /* sentinel */ } 2240}; 2241MODULE_DEVICE_TABLE(of, thp7312_dt_ids); 2242 2243static struct i2c_driver thp7312_i2c_driver = { 2244 .driver = { 2245 .name = "thp7312", 2246 .pm = &thp7312_pm_ops, 2247 .of_match_table = thp7312_dt_ids, 2248 }, 2249 .probe = thp7312_probe, 2250 .remove = thp7312_remove, 2251}; 2252 2253module_i2c_driver(thp7312_i2c_driver); 2254 2255MODULE_DESCRIPTION("THP7312 MIPI Camera Subdev Driver"); 2256MODULE_LICENSE("GPL"); 2257