1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Copyright (c) 2013 Intel Corporation. All Rights Reserved. 4 * 5 * Adapted from the atomisp-ov5693 driver, with contributions from: 6 * 7 * Daniel Scally 8 * Jean-Michel Hautbois 9 * Fabian Wuthrich 10 * Tsuchiya Yuto 11 * Jordan Hand 12 * Jake Day 13 */ 14 15#include <linux/acpi.h> 16#include <linux/clk.h> 17#include <linux/delay.h> 18#include <linux/device.h> 19#include <linux/i2c.h> 20#include <linux/module.h> 21#include <linux/pm_runtime.h> 22#include <linux/regulator/consumer.h> 23#include <linux/slab.h> 24#include <linux/types.h> 25 26#include <media/v4l2-cci.h> 27#include <media/v4l2-ctrls.h> 28#include <media/v4l2-device.h> 29#include <media/v4l2-fwnode.h> 30 31/* System Control */ 32#define OV5693_SW_RESET_REG CCI_REG8(0x0103) 33#define OV5693_SW_STREAM_REG CCI_REG8(0x0100) 34#define OV5693_START_STREAMING 0x01 35#define OV5693_STOP_STREAMING 0x00 36#define OV5693_SW_RESET 0x01 37 38#define OV5693_REG_CHIP_ID CCI_REG16(0x300a) 39/* Yes, this is right. The datasheet for the OV5693 gives its ID as 0x5690 */ 40#define OV5693_CHIP_ID 0x5690 41 42/* Exposure */ 43#define OV5693_EXPOSURE_CTRL_REG CCI_REG24(0x3500) 44#define OV5693_EXPOSURE_CTRL_MASK GENMASK(19, 4) 45#define OV5693_INTEGRATION_TIME_MARGIN 8 46#define OV5693_EXPOSURE_MIN 1 47#define OV5693_EXPOSURE_STEP 1 48 49/* Analogue Gain */ 50#define OV5693_GAIN_CTRL_REG CCI_REG16(0x350a) 51#define OV5693_GAIN_CTRL_MASK GENMASK(10, 4) 52#define OV5693_GAIN_MIN 1 53#define OV5693_GAIN_MAX 127 54#define OV5693_GAIN_DEF 8 55#define OV5693_GAIN_STEP 1 56 57/* Digital Gain */ 58#define OV5693_MWB_RED_GAIN_REG CCI_REG16(0x3400) 59#define OV5693_MWB_GREEN_GAIN_REG CCI_REG16(0x3402) 60#define OV5693_MWB_BLUE_GAIN_REG CCI_REG16(0x3404) 61#define OV5693_MWB_GAIN_MASK GENMASK(11, 0) 62#define OV5693_MWB_GAIN_MAX 0x0fff 63#define OV5693_DIGITAL_GAIN_MIN 1 64#define OV5693_DIGITAL_GAIN_MAX 4095 65#define OV5693_DIGITAL_GAIN_DEF 1024 66#define OV5693_DIGITAL_GAIN_STEP 1 67 68/* Timing and Format */ 69#define OV5693_CROP_START_X_REG CCI_REG16(0x3800) 70#define OV5693_CROP_START_Y_REG CCI_REG16(0x3802) 71#define OV5693_CROP_END_X_REG CCI_REG16(0x3804) 72#define OV5693_CROP_END_Y_REG CCI_REG16(0x3806) 73#define OV5693_OUTPUT_SIZE_X_REG CCI_REG16(0x3808) 74#define OV5693_OUTPUT_SIZE_Y_REG CCI_REG16(0x380a) 75 76#define OV5693_TIMING_HTS_REG CCI_REG16(0x380c) 77#define OV5693_FIXED_PPL 2688U 78#define OV5693_TIMING_VTS_REG CCI_REG16(0x380e) 79#define OV5693_TIMING_MAX_VTS 0xffff 80#define OV5693_TIMING_MIN_VTS 0x04 81 82#define OV5693_OFFSET_START_X_REG CCI_REG16(0x3810) 83#define OV5693_OFFSET_START_Y_REG CCI_REG16(0x3812) 84 85#define OV5693_SUB_INC_X_REG CCI_REG8(0x3814) 86#define OV5693_SUB_INC_Y_REG CCI_REG8(0x3815) 87 88#define OV5693_FORMAT1_REG CCI_REG8(0x3820) 89#define OV5693_FORMAT1_FLIP_VERT_ISP_EN BIT(6) 90#define OV5693_FORMAT1_FLIP_VERT_SENSOR_EN BIT(1) 91#define OV5693_FORMAT1_VBIN_EN BIT(0) 92#define OV5693_FORMAT2_REG CCI_REG8(0x3821) 93#define OV5693_FORMAT2_HDR_EN BIT(7) 94#define OV5693_FORMAT2_FLIP_HORZ_ISP_EN BIT(2) 95#define OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN BIT(1) 96#define OV5693_FORMAT2_HBIN_EN BIT(0) 97 98#define OV5693_ISP_CTRL2_REG CCI_REG8(0x5002) 99#define OV5693_ISP_SCALE_ENABLE BIT(7) 100 101/* Pixel Array */ 102#define OV5693_NATIVE_WIDTH 2624 103#define OV5693_NATIVE_HEIGHT 1956 104#define OV5693_NATIVE_START_LEFT 0 105#define OV5693_NATIVE_START_TOP 0 106#define OV5693_ACTIVE_WIDTH 2592 107#define OV5693_ACTIVE_HEIGHT 1944 108#define OV5693_ACTIVE_START_LEFT 16 109#define OV5693_ACTIVE_START_TOP 6 110#define OV5693_MIN_CROP_WIDTH 2 111#define OV5693_MIN_CROP_HEIGHT 2 112 113/* Test Pattern */ 114#define OV5693_TEST_PATTERN_REG CCI_REG8(0x5e00) 115#define OV5693_TEST_PATTERN_ENABLE BIT(7) 116#define OV5693_TEST_PATTERN_ROLLING BIT(6) 117#define OV5693_TEST_PATTERN_RANDOM 0x01 118#define OV5693_TEST_PATTERN_BARS 0x00 119 120/* System Frequencies */ 121#define OV5693_XVCLK_FREQ 19200000 122#define OV5693_LINK_FREQ_419_2MHZ 419200000 123#define OV5693_PIXEL_RATE 167680000 124 125#define to_ov5693_sensor(x) container_of(x, struct ov5693_device, sd) 126 127static const char * const ov5693_supply_names[] = { 128 "avdd", /* Analog power */ 129 "dovdd", /* Digital I/O power */ 130 "dvdd", /* Digital circuit power */ 131}; 132 133#define OV5693_NUM_SUPPLIES ARRAY_SIZE(ov5693_supply_names) 134 135struct ov5693_device { 136 struct device *dev; 137 struct regmap *regmap; 138 139 /* Protect against concurrent changes to controls */ 140 struct mutex lock; 141 142 struct gpio_desc *reset; 143 struct gpio_desc *powerdown; 144 struct gpio_desc *privacy_led; 145 struct regulator_bulk_data supplies[OV5693_NUM_SUPPLIES]; 146 struct clk *xvclk; 147 148 struct ov5693_mode { 149 struct v4l2_rect crop; 150 struct v4l2_mbus_framefmt format; 151 bool binning_x; 152 bool binning_y; 153 unsigned int inc_x_odd; 154 unsigned int inc_y_odd; 155 unsigned int vts; 156 } mode; 157 158 struct v4l2_subdev sd; 159 struct media_pad pad; 160 161 struct ov5693_v4l2_ctrls { 162 struct v4l2_ctrl_handler handler; 163 struct v4l2_ctrl *link_freq; 164 struct v4l2_ctrl *pixel_rate; 165 struct v4l2_ctrl *exposure; 166 struct v4l2_ctrl *analogue_gain; 167 struct v4l2_ctrl *digital_gain; 168 struct v4l2_ctrl *hflip; 169 struct v4l2_ctrl *vflip; 170 struct v4l2_ctrl *hblank; 171 struct v4l2_ctrl *vblank; 172 struct v4l2_ctrl *test_pattern; 173 } ctrls; 174}; 175 176static const struct cci_reg_sequence ov5693_global_regs[] = { 177 {CCI_REG8(0x3016), 0xf0}, 178 {CCI_REG8(0x3017), 0xf0}, 179 {CCI_REG8(0x3018), 0xf0}, 180 {CCI_REG8(0x3022), 0x01}, 181 {CCI_REG8(0x3028), 0x44}, 182 {CCI_REG8(0x3098), 0x02}, 183 {CCI_REG8(0x3099), 0x19}, 184 {CCI_REG8(0x309a), 0x02}, 185 {CCI_REG8(0x309b), 0x01}, 186 {CCI_REG8(0x309c), 0x00}, 187 {CCI_REG8(0x30a0), 0xd2}, 188 {CCI_REG8(0x30a2), 0x01}, 189 {CCI_REG8(0x30b2), 0x00}, 190 {CCI_REG8(0x30b3), 0x83}, 191 {CCI_REG8(0x30b4), 0x03}, 192 {CCI_REG8(0x30b5), 0x04}, 193 {CCI_REG8(0x30b6), 0x01}, 194 {CCI_REG8(0x3080), 0x01}, 195 {CCI_REG8(0x3104), 0x21}, 196 {CCI_REG8(0x3106), 0x00}, 197 {CCI_REG8(0x3406), 0x01}, 198 {CCI_REG8(0x3503), 0x07}, 199 {CCI_REG8(0x350b), 0x40}, 200 {CCI_REG8(0x3601), 0x0a}, 201 {CCI_REG8(0x3602), 0x38}, 202 {CCI_REG8(0x3612), 0x80}, 203 {CCI_REG8(0x3620), 0x54}, 204 {CCI_REG8(0x3621), 0xc7}, 205 {CCI_REG8(0x3622), 0x0f}, 206 {CCI_REG8(0x3625), 0x10}, 207 {CCI_REG8(0x3630), 0x55}, 208 {CCI_REG8(0x3631), 0xf4}, 209 {CCI_REG8(0x3632), 0x00}, 210 {CCI_REG8(0x3633), 0x34}, 211 {CCI_REG8(0x3634), 0x02}, 212 {CCI_REG8(0x364d), 0x0d}, 213 {CCI_REG8(0x364f), 0xdd}, 214 {CCI_REG8(0x3660), 0x04}, 215 {CCI_REG8(0x3662), 0x10}, 216 {CCI_REG8(0x3663), 0xf1}, 217 {CCI_REG8(0x3665), 0x00}, 218 {CCI_REG8(0x3666), 0x20}, 219 {CCI_REG8(0x3667), 0x00}, 220 {CCI_REG8(0x366a), 0x80}, 221 {CCI_REG8(0x3680), 0xe0}, 222 {CCI_REG8(0x3681), 0x00}, 223 {CCI_REG8(0x3700), 0x42}, 224 {CCI_REG8(0x3701), 0x14}, 225 {CCI_REG8(0x3702), 0xa0}, 226 {CCI_REG8(0x3703), 0xd8}, 227 {CCI_REG8(0x3704), 0x78}, 228 {CCI_REG8(0x3705), 0x02}, 229 {CCI_REG8(0x370a), 0x00}, 230 {CCI_REG8(0x370b), 0x20}, 231 {CCI_REG8(0x370c), 0x0c}, 232 {CCI_REG8(0x370d), 0x11}, 233 {CCI_REG8(0x370e), 0x00}, 234 {CCI_REG8(0x370f), 0x40}, 235 {CCI_REG8(0x3710), 0x00}, 236 {CCI_REG8(0x371a), 0x1c}, 237 {CCI_REG8(0x371b), 0x05}, 238 {CCI_REG8(0x371c), 0x01}, 239 {CCI_REG8(0x371e), 0xa1}, 240 {CCI_REG8(0x371f), 0x0c}, 241 {CCI_REG8(0x3721), 0x00}, 242 {CCI_REG8(0x3724), 0x10}, 243 {CCI_REG8(0x3726), 0x00}, 244 {CCI_REG8(0x372a), 0x01}, 245 {CCI_REG8(0x3730), 0x10}, 246 {CCI_REG8(0x3738), 0x22}, 247 {CCI_REG8(0x3739), 0xe5}, 248 {CCI_REG8(0x373a), 0x50}, 249 {CCI_REG8(0x373b), 0x02}, 250 {CCI_REG8(0x373c), 0x41}, 251 {CCI_REG8(0x373f), 0x02}, 252 {CCI_REG8(0x3740), 0x42}, 253 {CCI_REG8(0x3741), 0x02}, 254 {CCI_REG8(0x3742), 0x18}, 255 {CCI_REG8(0x3743), 0x01}, 256 {CCI_REG8(0x3744), 0x02}, 257 {CCI_REG8(0x3747), 0x10}, 258 {CCI_REG8(0x374c), 0x04}, 259 {CCI_REG8(0x3751), 0xf0}, 260 {CCI_REG8(0x3752), 0x00}, 261 {CCI_REG8(0x3753), 0x00}, 262 {CCI_REG8(0x3754), 0xc0}, 263 {CCI_REG8(0x3755), 0x00}, 264 {CCI_REG8(0x3756), 0x1a}, 265 {CCI_REG8(0x3758), 0x00}, 266 {CCI_REG8(0x3759), 0x0f}, 267 {CCI_REG8(0x376b), 0x44}, 268 {CCI_REG8(0x375c), 0x04}, 269 {CCI_REG8(0x3774), 0x10}, 270 {CCI_REG8(0x3776), 0x00}, 271 {CCI_REG8(0x377f), 0x08}, 272 {CCI_REG8(0x3780), 0x22}, 273 {CCI_REG8(0x3781), 0x0c}, 274 {CCI_REG8(0x3784), 0x2c}, 275 {CCI_REG8(0x3785), 0x1e}, 276 {CCI_REG8(0x378f), 0xf5}, 277 {CCI_REG8(0x3791), 0xb0}, 278 {CCI_REG8(0x3795), 0x00}, 279 {CCI_REG8(0x3796), 0x64}, 280 {CCI_REG8(0x3797), 0x11}, 281 {CCI_REG8(0x3798), 0x30}, 282 {CCI_REG8(0x3799), 0x41}, 283 {CCI_REG8(0x379a), 0x07}, 284 {CCI_REG8(0x379b), 0xb0}, 285 {CCI_REG8(0x379c), 0x0c}, 286 {CCI_REG8(0x3a04), 0x06}, 287 {CCI_REG8(0x3a05), 0x14}, 288 {CCI_REG8(0x3e07), 0x20}, 289 {CCI_REG8(0x4000), 0x08}, 290 {CCI_REG8(0x4001), 0x04}, 291 {CCI_REG8(0x4004), 0x08}, 292 {CCI_REG8(0x4006), 0x20}, 293 {CCI_REG8(0x4008), 0x24}, 294 {CCI_REG8(0x4009), 0x10}, 295 {CCI_REG8(0x4058), 0x00}, 296 {CCI_REG8(0x4101), 0xb2}, 297 {CCI_REG8(0x4307), 0x31}, 298 {CCI_REG8(0x4511), 0x05}, 299 {CCI_REG8(0x4512), 0x01}, 300 {CCI_REG8(0x481f), 0x30}, 301 {CCI_REG8(0x4826), 0x2c}, 302 {CCI_REG8(0x4d02), 0xfd}, 303 {CCI_REG8(0x4d03), 0xf5}, 304 {CCI_REG8(0x4d04), 0x0c}, 305 {CCI_REG8(0x4d05), 0xcc}, 306 {CCI_REG8(0x4837), 0x0a}, 307 {CCI_REG8(0x5003), 0x20}, 308 {CCI_REG8(0x5013), 0x00}, 309 {CCI_REG8(0x5842), 0x01}, 310 {CCI_REG8(0x5843), 0x2b}, 311 {CCI_REG8(0x5844), 0x01}, 312 {CCI_REG8(0x5845), 0x92}, 313 {CCI_REG8(0x5846), 0x01}, 314 {CCI_REG8(0x5847), 0x8f}, 315 {CCI_REG8(0x5848), 0x01}, 316 {CCI_REG8(0x5849), 0x0c}, 317 {CCI_REG8(0x5e10), 0x0c}, 318 {CCI_REG8(0x3820), 0x00}, 319 {CCI_REG8(0x3821), 0x1e}, 320 {CCI_REG8(0x5041), 0x14} 321}; 322 323static const struct v4l2_rect ov5693_default_crop = { 324 .left = OV5693_ACTIVE_START_LEFT, 325 .top = OV5693_ACTIVE_START_TOP, 326 .width = OV5693_ACTIVE_WIDTH, 327 .height = OV5693_ACTIVE_HEIGHT, 328}; 329 330static const struct v4l2_mbus_framefmt ov5693_default_fmt = { 331 .width = OV5693_ACTIVE_WIDTH, 332 .height = OV5693_ACTIVE_HEIGHT, 333 .code = MEDIA_BUS_FMT_SBGGR10_1X10, 334}; 335 336static const s64 link_freq_menu_items[] = { 337 OV5693_LINK_FREQ_419_2MHZ 338}; 339 340static const char * const ov5693_test_pattern_menu[] = { 341 "Disabled", 342 "Random Data", 343 "Colour Bars", 344 "Colour Bars with Rolling Bar" 345}; 346 347static const u8 ov5693_test_pattern_bits[] = { 348 0, 349 OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_RANDOM, 350 OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS, 351 OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS | 352 OV5693_TEST_PATTERN_ROLLING, 353}; 354 355/* V4L2 Controls Functions */ 356 357static int ov5693_flip_vert_configure(struct ov5693_device *ov5693, 358 bool enable) 359{ 360 u8 bits = OV5693_FORMAT1_FLIP_VERT_ISP_EN | 361 OV5693_FORMAT1_FLIP_VERT_SENSOR_EN; 362 int ret; 363 364 ret = cci_update_bits(ov5693->regmap, OV5693_FORMAT1_REG, bits, 365 enable ? bits : 0, NULL); 366 if (ret) 367 return ret; 368 369 return 0; 370} 371 372static int ov5693_flip_horz_configure(struct ov5693_device *ov5693, 373 bool enable) 374{ 375 u8 bits = OV5693_FORMAT2_FLIP_HORZ_ISP_EN | 376 OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN; 377 int ret; 378 379 ret = cci_update_bits(ov5693->regmap, OV5693_FORMAT2_REG, bits, 380 enable ? bits : 0, NULL); 381 if (ret) 382 return ret; 383 384 return 0; 385} 386 387static int ov5693_get_exposure(struct ov5693_device *ov5693, s32 *value) 388{ 389 u64 exposure; 390 int ret; 391 392 ret = cci_read(ov5693->regmap, OV5693_EXPOSURE_CTRL_REG, &exposure, 393 NULL); 394 if (ret) 395 return ret; 396 397 /* The lowest 4 bits are unsupported fractional bits */ 398 *value = exposure >> 4; 399 400 return 0; 401} 402 403static int ov5693_exposure_configure(struct ov5693_device *ov5693, 404 u32 exposure) 405{ 406 int ret = 0; 407 408 exposure = (exposure << 4) & OV5693_EXPOSURE_CTRL_MASK; 409 410 cci_write(ov5693->regmap, OV5693_EXPOSURE_CTRL_REG, exposure, &ret); 411 412 return ret; 413} 414 415static int ov5693_get_gain(struct ov5693_device *ov5693, u32 *gain) 416{ 417 u64 value; 418 int ret; 419 420 ret = cci_read(ov5693->regmap, OV5693_GAIN_CTRL_REG, &value, NULL); 421 if (ret) 422 return ret; 423 424 /* As with exposure, the lowest 4 bits are fractional bits. */ 425 *gain = value >> 4; 426 427 return ret; 428} 429 430static int ov5693_digital_gain_configure(struct ov5693_device *ov5693, 431 u32 gain) 432{ 433 int ret = 0; 434 435 gain &= OV5693_MWB_GAIN_MASK; 436 437 cci_write(ov5693->regmap, OV5693_MWB_RED_GAIN_REG, gain, &ret); 438 cci_write(ov5693->regmap, OV5693_MWB_GREEN_GAIN_REG, gain, &ret); 439 cci_write(ov5693->regmap, OV5693_MWB_BLUE_GAIN_REG, gain, &ret); 440 441 return ret; 442} 443 444static int ov5693_analog_gain_configure(struct ov5693_device *ov5693, u32 gain) 445{ 446 int ret = 0; 447 448 gain = (gain << 4) & OV5693_GAIN_CTRL_MASK; 449 450 cci_write(ov5693->regmap, OV5693_GAIN_CTRL_REG, gain, &ret); 451 452 return ret; 453} 454 455static int ov5693_vts_configure(struct ov5693_device *ov5693, u32 vblank) 456{ 457 u16 vts = ov5693->mode.format.height + vblank; 458 int ret = 0; 459 460 cci_write(ov5693->regmap, OV5693_TIMING_VTS_REG, vts, &ret); 461 462 return ret; 463} 464 465static int ov5693_test_pattern_configure(struct ov5693_device *ov5693, u32 idx) 466{ 467 int ret = 0; 468 469 cci_write(ov5693->regmap, OV5693_TEST_PATTERN_REG, 470 ov5693_test_pattern_bits[idx], &ret); 471 472 return ret; 473} 474 475static int ov5693_s_ctrl(struct v4l2_ctrl *ctrl) 476{ 477 struct ov5693_device *ov5693 = 478 container_of(ctrl->handler, struct ov5693_device, ctrls.handler); 479 int ret = 0; 480 481 /* If VBLANK is altered we need to update exposure to compensate */ 482 if (ctrl->id == V4L2_CID_VBLANK) { 483 int exposure_max; 484 485 exposure_max = ov5693->mode.format.height + ctrl->val - 486 OV5693_INTEGRATION_TIME_MARGIN; 487 __v4l2_ctrl_modify_range(ov5693->ctrls.exposure, 488 ov5693->ctrls.exposure->minimum, 489 exposure_max, 490 ov5693->ctrls.exposure->step, 491 min(ov5693->ctrls.exposure->val, 492 exposure_max)); 493 } 494 495 /* Only apply changes to the controls if the device is powered up */ 496 if (!pm_runtime_get_if_in_use(ov5693->dev)) 497 return 0; 498 499 switch (ctrl->id) { 500 case V4L2_CID_EXPOSURE: 501 ret = ov5693_exposure_configure(ov5693, ctrl->val); 502 break; 503 case V4L2_CID_ANALOGUE_GAIN: 504 ret = ov5693_analog_gain_configure(ov5693, ctrl->val); 505 break; 506 case V4L2_CID_DIGITAL_GAIN: 507 ret = ov5693_digital_gain_configure(ov5693, ctrl->val); 508 break; 509 case V4L2_CID_HFLIP: 510 ret = ov5693_flip_horz_configure(ov5693, !!ctrl->val); 511 break; 512 case V4L2_CID_VFLIP: 513 ret = ov5693_flip_vert_configure(ov5693, !!ctrl->val); 514 break; 515 case V4L2_CID_VBLANK: 516 ret = ov5693_vts_configure(ov5693, ctrl->val); 517 break; 518 case V4L2_CID_TEST_PATTERN: 519 ret = ov5693_test_pattern_configure(ov5693, ctrl->val); 520 break; 521 default: 522 ret = -EINVAL; 523 } 524 525 pm_runtime_put(ov5693->dev); 526 527 return ret; 528} 529 530static int ov5693_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 531{ 532 struct ov5693_device *ov5693 = container_of(ctrl->handler, 533 struct ov5693_device, 534 ctrls.handler); 535 536 switch (ctrl->id) { 537 case V4L2_CID_EXPOSURE_ABSOLUTE: 538 return ov5693_get_exposure(ov5693, &ctrl->val); 539 case V4L2_CID_AUTOGAIN: 540 return ov5693_get_gain(ov5693, &ctrl->val); 541 default: 542 return -EINVAL; 543 } 544} 545 546static const struct v4l2_ctrl_ops ov5693_ctrl_ops = { 547 .s_ctrl = ov5693_s_ctrl, 548 .g_volatile_ctrl = ov5693_g_volatile_ctrl 549}; 550 551/* System Control Functions */ 552 553static int ov5693_mode_configure(struct ov5693_device *ov5693) 554{ 555 const struct ov5693_mode *mode = &ov5693->mode; 556 int ret = 0; 557 558 /* Crop Start X */ 559 cci_write(ov5693->regmap, OV5693_CROP_START_X_REG, mode->crop.left, 560 &ret); 561 562 /* Offset X */ 563 cci_write(ov5693->regmap, OV5693_OFFSET_START_X_REG, 0, &ret); 564 565 /* Output Size X */ 566 cci_write(ov5693->regmap, OV5693_OUTPUT_SIZE_X_REG, mode->format.width, 567 &ret); 568 569 /* Crop End X */ 570 cci_write(ov5693->regmap, OV5693_CROP_END_X_REG, 571 mode->crop.left + mode->crop.width, &ret); 572 573 /* Horizontal Total Size */ 574 cci_write(ov5693->regmap, OV5693_TIMING_HTS_REG, OV5693_FIXED_PPL, 575 &ret); 576 577 /* Crop Start Y */ 578 cci_write(ov5693->regmap, OV5693_CROP_START_Y_REG, mode->crop.top, 579 &ret); 580 581 /* Offset Y */ 582 cci_write(ov5693->regmap, OV5693_OFFSET_START_Y_REG, 0, &ret); 583 584 /* Output Size Y */ 585 cci_write(ov5693->regmap, OV5693_OUTPUT_SIZE_Y_REG, mode->format.height, 586 &ret); 587 588 /* Crop End Y */ 589 cci_write(ov5693->regmap, OV5693_CROP_END_Y_REG, 590 mode->crop.top + mode->crop.height, &ret); 591 592 /* Subsample X increase */ 593 cci_write(ov5693->regmap, OV5693_SUB_INC_X_REG, 594 ((mode->inc_x_odd << 4) & 0xf0) | 0x01, &ret); 595 /* Subsample Y increase */ 596 cci_write(ov5693->regmap, OV5693_SUB_INC_Y_REG, 597 ((mode->inc_y_odd << 4) & 0xf0) | 0x01, &ret); 598 599 /* Binning */ 600 cci_update_bits(ov5693->regmap, OV5693_FORMAT1_REG, 601 OV5693_FORMAT1_VBIN_EN, 602 mode->binning_y ? OV5693_FORMAT1_VBIN_EN : 0, &ret); 603 604 cci_update_bits(ov5693->regmap, OV5693_FORMAT2_REG, 605 OV5693_FORMAT2_HBIN_EN, 606 mode->binning_x ? OV5693_FORMAT2_HBIN_EN : 0, &ret); 607 608 return ret; 609} 610 611static int ov5693_enable_streaming(struct ov5693_device *ov5693, bool enable) 612{ 613 int ret = 0; 614 615 cci_write(ov5693->regmap, OV5693_SW_STREAM_REG, 616 enable ? OV5693_START_STREAMING : OV5693_STOP_STREAMING, 617 &ret); 618 619 return ret; 620} 621 622static int ov5693_sw_reset(struct ov5693_device *ov5693) 623{ 624 int ret = 0; 625 626 cci_write(ov5693->regmap, OV5693_SW_RESET_REG, OV5693_SW_RESET, &ret); 627 628 return ret; 629} 630 631static int ov5693_sensor_init(struct ov5693_device *ov5693) 632{ 633 int ret; 634 635 ret = ov5693_sw_reset(ov5693); 636 if (ret) 637 return dev_err_probe(ov5693->dev, ret, 638 "software reset error\n"); 639 640 ret = cci_multi_reg_write(ov5693->regmap, ov5693_global_regs, 641 ARRAY_SIZE(ov5693_global_regs), NULL); 642 if (ret) 643 return dev_err_probe(ov5693->dev, ret, 644 "global settings error\n"); 645 646 ret = ov5693_mode_configure(ov5693); 647 if (ret) 648 return dev_err_probe(ov5693->dev, ret, 649 "mode configure error\n"); 650 651 ret = ov5693_enable_streaming(ov5693, false); 652 if (ret) 653 dev_err(ov5693->dev, "stop streaming error\n"); 654 655 return ret; 656} 657 658static void ov5693_sensor_powerdown(struct ov5693_device *ov5693) 659{ 660 gpiod_set_value_cansleep(ov5693->privacy_led, 0); 661 gpiod_set_value_cansleep(ov5693->reset, 1); 662 gpiod_set_value_cansleep(ov5693->powerdown, 1); 663 664 regulator_bulk_disable(OV5693_NUM_SUPPLIES, ov5693->supplies); 665 666 clk_disable_unprepare(ov5693->xvclk); 667} 668 669static int ov5693_sensor_powerup(struct ov5693_device *ov5693) 670{ 671 int ret; 672 673 gpiod_set_value_cansleep(ov5693->reset, 1); 674 gpiod_set_value_cansleep(ov5693->powerdown, 1); 675 676 ret = clk_prepare_enable(ov5693->xvclk); 677 if (ret) { 678 dev_err(ov5693->dev, "Failed to enable clk\n"); 679 goto fail_power; 680 } 681 682 ret = regulator_bulk_enable(OV5693_NUM_SUPPLIES, ov5693->supplies); 683 if (ret) { 684 dev_err(ov5693->dev, "Failed to enable regulators\n"); 685 goto fail_power; 686 } 687 688 gpiod_set_value_cansleep(ov5693->powerdown, 0); 689 gpiod_set_value_cansleep(ov5693->reset, 0); 690 gpiod_set_value_cansleep(ov5693->privacy_led, 1); 691 692 usleep_range(5000, 7500); 693 694 return 0; 695 696fail_power: 697 ov5693_sensor_powerdown(ov5693); 698 return ret; 699} 700 701static int __maybe_unused ov5693_sensor_suspend(struct device *dev) 702{ 703 struct v4l2_subdev *sd = dev_get_drvdata(dev); 704 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 705 706 ov5693_sensor_powerdown(ov5693); 707 708 return 0; 709} 710 711static int __maybe_unused ov5693_sensor_resume(struct device *dev) 712{ 713 struct v4l2_subdev *sd = dev_get_drvdata(dev); 714 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 715 int ret; 716 717 mutex_lock(&ov5693->lock); 718 719 ret = ov5693_sensor_powerup(ov5693); 720 if (ret) 721 goto out_unlock; 722 723 ret = ov5693_sensor_init(ov5693); 724 if (ret) { 725 dev_err(dev, "ov5693 sensor init failure\n"); 726 goto err_power; 727 } 728 729 goto out_unlock; 730 731err_power: 732 ov5693_sensor_powerdown(ov5693); 733out_unlock: 734 mutex_unlock(&ov5693->lock); 735 return ret; 736} 737 738static int ov5693_detect(struct ov5693_device *ov5693) 739{ 740 int ret; 741 u64 id; 742 743 ret = cci_read(ov5693->regmap, OV5693_REG_CHIP_ID, &id, NULL); 744 if (ret) 745 return ret; 746 747 if (id != OV5693_CHIP_ID) 748 return dev_err_probe(ov5693->dev, -ENODEV, 749 "sensor ID mismatch. Got 0x%04llx\n", id); 750 751 return 0; 752} 753 754/* V4L2 Framework callbacks */ 755 756static unsigned int __ov5693_calc_vts(u32 height) 757{ 758 /* 759 * We need to set a sensible default VTS for whatever format height we 760 * happen to be given from set_fmt(). This function just targets 761 * an even multiple of 30fps. 762 */ 763 764 unsigned int tgt_fps; 765 766 tgt_fps = rounddown(OV5693_PIXEL_RATE / OV5693_FIXED_PPL / height, 30); 767 768 return ALIGN_DOWN(OV5693_PIXEL_RATE / OV5693_FIXED_PPL / tgt_fps, 2); 769} 770 771static struct v4l2_mbus_framefmt * 772__ov5693_get_pad_format(struct ov5693_device *ov5693, 773 struct v4l2_subdev_state *state, 774 unsigned int pad, enum v4l2_subdev_format_whence which) 775{ 776 switch (which) { 777 case V4L2_SUBDEV_FORMAT_TRY: 778 return v4l2_subdev_state_get_format(state, pad); 779 case V4L2_SUBDEV_FORMAT_ACTIVE: 780 return &ov5693->mode.format; 781 default: 782 return NULL; 783 } 784} 785 786static struct v4l2_rect * 787__ov5693_get_pad_crop(struct ov5693_device *ov5693, 788 struct v4l2_subdev_state *state, 789 unsigned int pad, enum v4l2_subdev_format_whence which) 790{ 791 switch (which) { 792 case V4L2_SUBDEV_FORMAT_TRY: 793 return v4l2_subdev_state_get_crop(state, pad); 794 case V4L2_SUBDEV_FORMAT_ACTIVE: 795 return &ov5693->mode.crop; 796 } 797 798 return NULL; 799} 800 801static int ov5693_get_fmt(struct v4l2_subdev *sd, 802 struct v4l2_subdev_state *state, 803 struct v4l2_subdev_format *format) 804{ 805 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 806 807 format->format = ov5693->mode.format; 808 809 return 0; 810} 811 812static int ov5693_set_fmt(struct v4l2_subdev *sd, 813 struct v4l2_subdev_state *state, 814 struct v4l2_subdev_format *format) 815{ 816 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 817 const struct v4l2_rect *crop; 818 struct v4l2_mbus_framefmt *fmt; 819 unsigned int hratio, vratio; 820 unsigned int width, height; 821 unsigned int hblank; 822 int exposure_max; 823 824 crop = __ov5693_get_pad_crop(ov5693, state, format->pad, format->which); 825 826 /* 827 * Align to two to simplify the binning calculations below, and clamp 828 * the requested format at the crop rectangle 829 */ 830 width = clamp_t(unsigned int, ALIGN(format->format.width, 2), 831 OV5693_MIN_CROP_WIDTH, crop->width); 832 height = clamp_t(unsigned int, ALIGN(format->format.height, 2), 833 OV5693_MIN_CROP_HEIGHT, crop->height); 834 835 /* 836 * We can only support setting either the dimensions of the crop rect 837 * or those dimensions binned (separately) by a factor of two. 838 */ 839 hratio = clamp_t(unsigned int, 840 DIV_ROUND_CLOSEST(crop->width, width), 1, 2); 841 vratio = clamp_t(unsigned int, 842 DIV_ROUND_CLOSEST(crop->height, height), 1, 2); 843 844 fmt = __ov5693_get_pad_format(ov5693, state, format->pad, 845 format->which); 846 847 fmt->width = crop->width / hratio; 848 fmt->height = crop->height / vratio; 849 fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; 850 851 format->format = *fmt; 852 853 if (format->which == V4L2_SUBDEV_FORMAT_TRY) 854 return 0; 855 856 mutex_lock(&ov5693->lock); 857 858 ov5693->mode.binning_x = hratio > 1; 859 ov5693->mode.inc_x_odd = hratio > 1 ? 3 : 1; 860 ov5693->mode.binning_y = vratio > 1; 861 ov5693->mode.inc_y_odd = vratio > 1 ? 3 : 1; 862 863 ov5693->mode.vts = __ov5693_calc_vts(fmt->height); 864 865 __v4l2_ctrl_modify_range(ov5693->ctrls.vblank, 866 OV5693_TIMING_MIN_VTS, 867 OV5693_TIMING_MAX_VTS - fmt->height, 868 1, ov5693->mode.vts - fmt->height); 869 __v4l2_ctrl_s_ctrl(ov5693->ctrls.vblank, 870 ov5693->mode.vts - fmt->height); 871 872 hblank = OV5693_FIXED_PPL - fmt->width; 873 __v4l2_ctrl_modify_range(ov5693->ctrls.hblank, hblank, hblank, 1, 874 hblank); 875 876 exposure_max = ov5693->mode.vts - OV5693_INTEGRATION_TIME_MARGIN; 877 __v4l2_ctrl_modify_range(ov5693->ctrls.exposure, 878 ov5693->ctrls.exposure->minimum, exposure_max, 879 ov5693->ctrls.exposure->step, 880 min(ov5693->ctrls.exposure->val, 881 exposure_max)); 882 883 mutex_unlock(&ov5693->lock); 884 return 0; 885} 886 887static int ov5693_get_selection(struct v4l2_subdev *sd, 888 struct v4l2_subdev_state *state, 889 struct v4l2_subdev_selection *sel) 890{ 891 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 892 893 switch (sel->target) { 894 case V4L2_SEL_TGT_CROP: 895 mutex_lock(&ov5693->lock); 896 sel->r = *__ov5693_get_pad_crop(ov5693, state, sel->pad, 897 sel->which); 898 mutex_unlock(&ov5693->lock); 899 break; 900 case V4L2_SEL_TGT_NATIVE_SIZE: 901 sel->r.top = 0; 902 sel->r.left = 0; 903 sel->r.width = OV5693_NATIVE_WIDTH; 904 sel->r.height = OV5693_NATIVE_HEIGHT; 905 break; 906 case V4L2_SEL_TGT_CROP_BOUNDS: 907 case V4L2_SEL_TGT_CROP_DEFAULT: 908 sel->r.top = OV5693_ACTIVE_START_TOP; 909 sel->r.left = OV5693_ACTIVE_START_LEFT; 910 sel->r.width = OV5693_ACTIVE_WIDTH; 911 sel->r.height = OV5693_ACTIVE_HEIGHT; 912 break; 913 default: 914 return -EINVAL; 915 } 916 917 return 0; 918} 919 920static int ov5693_set_selection(struct v4l2_subdev *sd, 921 struct v4l2_subdev_state *state, 922 struct v4l2_subdev_selection *sel) 923{ 924 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 925 struct v4l2_mbus_framefmt *format; 926 struct v4l2_rect *__crop; 927 struct v4l2_rect rect; 928 929 if (sel->target != V4L2_SEL_TGT_CROP) 930 return -EINVAL; 931 932 /* 933 * Clamp the boundaries of the crop rectangle to the size of the sensor 934 * pixel array. Align to multiples of 2 to ensure Bayer pattern isn't 935 * disrupted. 936 */ 937 rect.left = clamp(ALIGN(sel->r.left, 2), OV5693_NATIVE_START_LEFT, 938 OV5693_NATIVE_WIDTH); 939 rect.top = clamp(ALIGN(sel->r.top, 2), OV5693_NATIVE_START_TOP, 940 OV5693_NATIVE_HEIGHT); 941 rect.width = clamp_t(unsigned int, ALIGN(sel->r.width, 2), 942 OV5693_MIN_CROP_WIDTH, OV5693_NATIVE_WIDTH); 943 rect.height = clamp_t(unsigned int, ALIGN(sel->r.height, 2), 944 OV5693_MIN_CROP_HEIGHT, OV5693_NATIVE_HEIGHT); 945 946 /* Make sure the crop rectangle isn't outside the bounds of the array */ 947 rect.width = min_t(unsigned int, rect.width, 948 OV5693_NATIVE_WIDTH - rect.left); 949 rect.height = min_t(unsigned int, rect.height, 950 OV5693_NATIVE_HEIGHT - rect.top); 951 952 __crop = __ov5693_get_pad_crop(ov5693, state, sel->pad, sel->which); 953 954 if (rect.width != __crop->width || rect.height != __crop->height) { 955 /* 956 * Reset the output image size if the crop rectangle size has 957 * been modified. 958 */ 959 format = __ov5693_get_pad_format(ov5693, state, sel->pad, 960 sel->which); 961 format->width = rect.width; 962 format->height = rect.height; 963 } 964 965 *__crop = rect; 966 sel->r = rect; 967 968 return 0; 969} 970 971static int ov5693_s_stream(struct v4l2_subdev *sd, int enable) 972{ 973 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 974 int ret; 975 976 if (enable) { 977 ret = pm_runtime_resume_and_get(ov5693->dev); 978 if (ret) 979 return ret; 980 981 mutex_lock(&ov5693->lock); 982 ret = __v4l2_ctrl_handler_setup(&ov5693->ctrls.handler); 983 if (ret) { 984 mutex_unlock(&ov5693->lock); 985 goto err_power_down; 986 } 987 988 ret = ov5693_enable_streaming(ov5693, true); 989 mutex_unlock(&ov5693->lock); 990 } else { 991 mutex_lock(&ov5693->lock); 992 ret = ov5693_enable_streaming(ov5693, false); 993 mutex_unlock(&ov5693->lock); 994 } 995 if (ret) 996 goto err_power_down; 997 998 if (!enable) 999 pm_runtime_put(ov5693->dev); 1000 1001 return 0; 1002err_power_down: 1003 pm_runtime_put_noidle(ov5693->dev); 1004 return ret; 1005} 1006 1007static int ov5693_get_frame_interval(struct v4l2_subdev *sd, 1008 struct v4l2_subdev_state *sd_state, 1009 struct v4l2_subdev_frame_interval *interval) 1010{ 1011 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 1012 unsigned int framesize = OV5693_FIXED_PPL * (ov5693->mode.format.height + 1013 ov5693->ctrls.vblank->val); 1014 unsigned int fps = DIV_ROUND_CLOSEST(OV5693_PIXEL_RATE, framesize); 1015 1016 /* 1017 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2 1018 * subdev active state API. 1019 */ 1020 if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE) 1021 return -EINVAL; 1022 1023 interval->interval.numerator = 1; 1024 interval->interval.denominator = fps; 1025 1026 return 0; 1027} 1028 1029static int ov5693_enum_mbus_code(struct v4l2_subdev *sd, 1030 struct v4l2_subdev_state *state, 1031 struct v4l2_subdev_mbus_code_enum *code) 1032{ 1033 /* Only a single mbus format is supported */ 1034 if (code->index > 0) 1035 return -EINVAL; 1036 1037 code->code = MEDIA_BUS_FMT_SBGGR10_1X10; 1038 return 0; 1039} 1040 1041static int ov5693_enum_frame_size(struct v4l2_subdev *sd, 1042 struct v4l2_subdev_state *state, 1043 struct v4l2_subdev_frame_size_enum *fse) 1044{ 1045 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 1046 struct v4l2_rect *__crop; 1047 1048 if (fse->index > 1 || fse->code != MEDIA_BUS_FMT_SBGGR10_1X10) 1049 return -EINVAL; 1050 1051 __crop = __ov5693_get_pad_crop(ov5693, state, fse->pad, fse->which); 1052 if (!__crop) 1053 return -EINVAL; 1054 1055 fse->min_width = __crop->width / (fse->index + 1); 1056 fse->min_height = __crop->height / (fse->index + 1); 1057 fse->max_width = fse->min_width; 1058 fse->max_height = fse->min_height; 1059 1060 return 0; 1061} 1062 1063static const struct v4l2_subdev_video_ops ov5693_video_ops = { 1064 .s_stream = ov5693_s_stream, 1065}; 1066 1067static const struct v4l2_subdev_pad_ops ov5693_pad_ops = { 1068 .enum_mbus_code = ov5693_enum_mbus_code, 1069 .enum_frame_size = ov5693_enum_frame_size, 1070 .get_fmt = ov5693_get_fmt, 1071 .set_fmt = ov5693_set_fmt, 1072 .get_selection = ov5693_get_selection, 1073 .set_selection = ov5693_set_selection, 1074 .get_frame_interval = ov5693_get_frame_interval, 1075}; 1076 1077static const struct v4l2_subdev_ops ov5693_ops = { 1078 .video = &ov5693_video_ops, 1079 .pad = &ov5693_pad_ops, 1080}; 1081 1082/* Sensor and Driver Configuration Functions */ 1083 1084static int ov5693_init_controls(struct ov5693_device *ov5693) 1085{ 1086 const struct v4l2_ctrl_ops *ops = &ov5693_ctrl_ops; 1087 struct ov5693_v4l2_ctrls *ctrls = &ov5693->ctrls; 1088 struct v4l2_fwnode_device_properties props; 1089 int vblank_max, vblank_def; 1090 int exposure_max; 1091 int hblank; 1092 int ret; 1093 1094 ret = v4l2_ctrl_handler_init(&ctrls->handler, 12); 1095 if (ret) 1096 return ret; 1097 1098 /* link freq */ 1099 ctrls->link_freq = v4l2_ctrl_new_int_menu(&ctrls->handler, 1100 NULL, V4L2_CID_LINK_FREQ, 1101 0, 0, link_freq_menu_items); 1102 if (ctrls->link_freq) 1103 ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1104 1105 /* pixel rate */ 1106 ctrls->pixel_rate = v4l2_ctrl_new_std(&ctrls->handler, NULL, 1107 V4L2_CID_PIXEL_RATE, 0, 1108 OV5693_PIXEL_RATE, 1, 1109 OV5693_PIXEL_RATE); 1110 1111 /* Exposure */ 1112 exposure_max = ov5693->mode.vts - OV5693_INTEGRATION_TIME_MARGIN; 1113 ctrls->exposure = v4l2_ctrl_new_std(&ctrls->handler, ops, 1114 V4L2_CID_EXPOSURE, 1115 OV5693_EXPOSURE_MIN, exposure_max, 1116 OV5693_EXPOSURE_STEP, exposure_max); 1117 1118 /* Gain */ 1119 ctrls->analogue_gain = v4l2_ctrl_new_std(&ctrls->handler, 1120 ops, V4L2_CID_ANALOGUE_GAIN, 1121 OV5693_GAIN_MIN, 1122 OV5693_GAIN_MAX, 1123 OV5693_GAIN_STEP, 1124 OV5693_GAIN_DEF); 1125 1126 ctrls->digital_gain = v4l2_ctrl_new_std(&ctrls->handler, ops, 1127 V4L2_CID_DIGITAL_GAIN, 1128 OV5693_DIGITAL_GAIN_MIN, 1129 OV5693_DIGITAL_GAIN_MAX, 1130 OV5693_DIGITAL_GAIN_STEP, 1131 OV5693_DIGITAL_GAIN_DEF); 1132 1133 /* Flip */ 1134 ctrls->hflip = v4l2_ctrl_new_std(&ctrls->handler, ops, 1135 V4L2_CID_HFLIP, 0, 1, 1, 0); 1136 1137 ctrls->vflip = v4l2_ctrl_new_std(&ctrls->handler, ops, 1138 V4L2_CID_VFLIP, 0, 1, 1, 0); 1139 1140 hblank = OV5693_FIXED_PPL - ov5693->mode.format.width; 1141 ctrls->hblank = v4l2_ctrl_new_std(&ctrls->handler, ops, 1142 V4L2_CID_HBLANK, hblank, 1143 hblank, 1, hblank); 1144 1145 if (ctrls->hblank) 1146 ctrls->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1147 1148 vblank_max = OV5693_TIMING_MAX_VTS - ov5693->mode.format.height; 1149 vblank_def = ov5693->mode.vts - ov5693->mode.format.height; 1150 ctrls->vblank = v4l2_ctrl_new_std(&ctrls->handler, ops, 1151 V4L2_CID_VBLANK, 1152 OV5693_TIMING_MIN_VTS, 1153 vblank_max, 1, vblank_def); 1154 1155 ctrls->test_pattern = v4l2_ctrl_new_std_menu_items( 1156 &ctrls->handler, ops, 1157 V4L2_CID_TEST_PATTERN, 1158 ARRAY_SIZE(ov5693_test_pattern_menu) - 1, 1159 0, 0, ov5693_test_pattern_menu); 1160 1161 if (ctrls->handler.error) { 1162 dev_err(ov5693->dev, "Error initialising v4l2 ctrls\n"); 1163 ret = ctrls->handler.error; 1164 goto err_free_handler; 1165 } 1166 1167 /* set properties from fwnode (e.g. rotation, orientation) */ 1168 ret = v4l2_fwnode_device_parse(ov5693->dev, &props); 1169 if (ret) 1170 goto err_free_handler; 1171 1172 ret = v4l2_ctrl_new_fwnode_properties(&ctrls->handler, ops, 1173 &props); 1174 if (ret) 1175 goto err_free_handler; 1176 1177 /* Use same lock for controls as for everything else. */ 1178 ctrls->handler.lock = &ov5693->lock; 1179 ov5693->sd.ctrl_handler = &ctrls->handler; 1180 1181 return 0; 1182 1183err_free_handler: 1184 v4l2_ctrl_handler_free(&ctrls->handler); 1185 return ret; 1186} 1187 1188static int ov5693_configure_gpios(struct ov5693_device *ov5693) 1189{ 1190 ov5693->reset = devm_gpiod_get_optional(ov5693->dev, "reset", 1191 GPIOD_OUT_HIGH); 1192 if (IS_ERR(ov5693->reset)) { 1193 dev_err(ov5693->dev, "Error fetching reset GPIO\n"); 1194 return PTR_ERR(ov5693->reset); 1195 } 1196 1197 ov5693->powerdown = devm_gpiod_get_optional(ov5693->dev, "powerdown", 1198 GPIOD_OUT_HIGH); 1199 if (IS_ERR(ov5693->powerdown)) { 1200 dev_err(ov5693->dev, "Error fetching powerdown GPIO\n"); 1201 return PTR_ERR(ov5693->powerdown); 1202 } 1203 1204 ov5693->privacy_led = devm_gpiod_get_optional(ov5693->dev, "privacy-led", 1205 GPIOD_OUT_LOW); 1206 if (IS_ERR(ov5693->privacy_led)) { 1207 dev_err(ov5693->dev, "Error fetching privacy-led GPIO\n"); 1208 return PTR_ERR(ov5693->privacy_led); 1209 } 1210 1211 return 0; 1212} 1213 1214static int ov5693_get_regulators(struct ov5693_device *ov5693) 1215{ 1216 unsigned int i; 1217 1218 for (i = 0; i < OV5693_NUM_SUPPLIES; i++) 1219 ov5693->supplies[i].supply = ov5693_supply_names[i]; 1220 1221 return devm_regulator_bulk_get(ov5693->dev, OV5693_NUM_SUPPLIES, 1222 ov5693->supplies); 1223} 1224 1225static int ov5693_check_hwcfg(struct ov5693_device *ov5693) 1226{ 1227 struct fwnode_handle *fwnode = dev_fwnode(ov5693->dev); 1228 struct v4l2_fwnode_endpoint bus_cfg = { 1229 .bus_type = V4L2_MBUS_CSI2_DPHY, 1230 }; 1231 struct fwnode_handle *endpoint; 1232 unsigned int i; 1233 int ret; 1234 1235 endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL); 1236 if (!endpoint) 1237 return -EPROBE_DEFER; /* Could be provided by cio2-bridge */ 1238 1239 ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &bus_cfg); 1240 fwnode_handle_put(endpoint); 1241 if (ret) 1242 return ret; 1243 1244 if (bus_cfg.bus.mipi_csi2.num_data_lanes != 2) { 1245 dev_err(ov5693->dev, "only a 2-lane CSI2 config is supported"); 1246 ret = -EINVAL; 1247 goto out_free_bus_cfg; 1248 } 1249 1250 if (!bus_cfg.nr_of_link_frequencies) { 1251 dev_err(ov5693->dev, "no link frequencies defined\n"); 1252 ret = -EINVAL; 1253 goto out_free_bus_cfg; 1254 } 1255 1256 for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) 1257 if (bus_cfg.link_frequencies[i] == OV5693_LINK_FREQ_419_2MHZ) 1258 break; 1259 1260 if (i == bus_cfg.nr_of_link_frequencies) { 1261 dev_err(ov5693->dev, "supported link freq %ull not found\n", 1262 OV5693_LINK_FREQ_419_2MHZ); 1263 ret = -EINVAL; 1264 goto out_free_bus_cfg; 1265 } 1266 1267out_free_bus_cfg: 1268 v4l2_fwnode_endpoint_free(&bus_cfg); 1269 1270 return ret; 1271} 1272 1273static int ov5693_probe(struct i2c_client *client) 1274{ 1275 struct ov5693_device *ov5693; 1276 u32 xvclk_rate; 1277 int ret = 0; 1278 1279 ov5693 = devm_kzalloc(&client->dev, sizeof(*ov5693), GFP_KERNEL); 1280 if (!ov5693) 1281 return -ENOMEM; 1282 1283 ov5693->dev = &client->dev; 1284 1285 ov5693->regmap = devm_cci_regmap_init_i2c(client, 16); 1286 if (IS_ERR(ov5693->regmap)) 1287 return PTR_ERR(ov5693->regmap); 1288 1289 ret = ov5693_check_hwcfg(ov5693); 1290 if (ret) 1291 return ret; 1292 1293 mutex_init(&ov5693->lock); 1294 1295 v4l2_i2c_subdev_init(&ov5693->sd, client, &ov5693_ops); 1296 1297 ov5693->xvclk = devm_clk_get_optional(&client->dev, "xvclk"); 1298 if (IS_ERR(ov5693->xvclk)) 1299 return dev_err_probe(&client->dev, PTR_ERR(ov5693->xvclk), 1300 "failed to get xvclk: %ld\n", 1301 PTR_ERR(ov5693->xvclk)); 1302 1303 if (ov5693->xvclk) { 1304 xvclk_rate = clk_get_rate(ov5693->xvclk); 1305 } else { 1306 ret = fwnode_property_read_u32(dev_fwnode(&client->dev), 1307 "clock-frequency", 1308 &xvclk_rate); 1309 1310 if (ret) { 1311 dev_err(&client->dev, "can't get clock frequency"); 1312 return ret; 1313 } 1314 } 1315 1316 if (xvclk_rate != OV5693_XVCLK_FREQ) 1317 dev_warn(&client->dev, "Found clk freq %u, expected %u\n", 1318 xvclk_rate, OV5693_XVCLK_FREQ); 1319 1320 ret = ov5693_configure_gpios(ov5693); 1321 if (ret) 1322 return ret; 1323 1324 ret = ov5693_get_regulators(ov5693); 1325 if (ret) 1326 return dev_err_probe(&client->dev, ret, 1327 "Error fetching regulators\n"); 1328 1329 ov5693->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1330 ov5693->pad.flags = MEDIA_PAD_FL_SOURCE; 1331 ov5693->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 1332 1333 ov5693->mode.crop = ov5693_default_crop; 1334 ov5693->mode.format = ov5693_default_fmt; 1335 ov5693->mode.vts = __ov5693_calc_vts(ov5693->mode.format.height); 1336 1337 ret = ov5693_init_controls(ov5693); 1338 if (ret) 1339 return ret; 1340 1341 ret = media_entity_pads_init(&ov5693->sd.entity, 1, &ov5693->pad); 1342 if (ret) 1343 goto err_ctrl_handler_free; 1344 1345 /* 1346 * We need the driver to work in the event that pm runtime is disable in 1347 * the kernel, so power up and verify the chip now. In the event that 1348 * runtime pm is disabled this will leave the chip on, so that streaming 1349 * will work. 1350 */ 1351 1352 ret = ov5693_sensor_powerup(ov5693); 1353 if (ret) 1354 goto err_media_entity_cleanup; 1355 1356 ret = ov5693_detect(ov5693); 1357 if (ret) 1358 goto err_powerdown; 1359 1360 pm_runtime_set_active(&client->dev); 1361 pm_runtime_get_noresume(&client->dev); 1362 pm_runtime_enable(&client->dev); 1363 1364 ret = v4l2_async_register_subdev_sensor(&ov5693->sd); 1365 if (ret) { 1366 dev_err(&client->dev, "failed to register V4L2 subdev: %d", 1367 ret); 1368 goto err_pm_runtime; 1369 } 1370 1371 pm_runtime_set_autosuspend_delay(&client->dev, 1000); 1372 pm_runtime_use_autosuspend(&client->dev); 1373 pm_runtime_put_autosuspend(&client->dev); 1374 1375 return ret; 1376 1377err_pm_runtime: 1378 pm_runtime_disable(&client->dev); 1379 pm_runtime_put_noidle(&client->dev); 1380err_powerdown: 1381 ov5693_sensor_powerdown(ov5693); 1382err_media_entity_cleanup: 1383 media_entity_cleanup(&ov5693->sd.entity); 1384err_ctrl_handler_free: 1385 v4l2_ctrl_handler_free(&ov5693->ctrls.handler); 1386 1387 return ret; 1388} 1389 1390static void ov5693_remove(struct i2c_client *client) 1391{ 1392 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1393 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 1394 1395 v4l2_async_unregister_subdev(sd); 1396 media_entity_cleanup(&ov5693->sd.entity); 1397 v4l2_ctrl_handler_free(&ov5693->ctrls.handler); 1398 mutex_destroy(&ov5693->lock); 1399 1400 /* 1401 * Disable runtime PM. In case runtime PM is disabled in the kernel, 1402 * make sure to turn power off manually. 1403 */ 1404 pm_runtime_disable(&client->dev); 1405 if (!pm_runtime_status_suspended(&client->dev)) 1406 ov5693_sensor_powerdown(ov5693); 1407 pm_runtime_set_suspended(&client->dev); 1408} 1409 1410static const struct dev_pm_ops ov5693_pm_ops = { 1411 SET_RUNTIME_PM_OPS(ov5693_sensor_suspend, ov5693_sensor_resume, NULL) 1412}; 1413 1414static const struct acpi_device_id ov5693_acpi_match[] = { 1415 {"INT33BE"}, 1416 {}, 1417}; 1418MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match); 1419 1420static const struct of_device_id ov5693_of_match[] = { 1421 { .compatible = "ovti,ov5693", }, 1422 { /* sentinel */ }, 1423}; 1424MODULE_DEVICE_TABLE(of, ov5693_of_match); 1425 1426static struct i2c_driver ov5693_driver = { 1427 .driver = { 1428 .name = "ov5693", 1429 .acpi_match_table = ov5693_acpi_match, 1430 .of_match_table = ov5693_of_match, 1431 .pm = &ov5693_pm_ops, 1432 }, 1433 .probe = ov5693_probe, 1434 .remove = ov5693_remove, 1435}; 1436module_i2c_driver(ov5693_driver); 1437 1438MODULE_DESCRIPTION("A low-level driver for OmniVision 5693 sensors"); 1439MODULE_LICENSE("GPL"); 1440