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ov5693.c
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linux-6.19.14/drivers/media/i2c/ov5693.c
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 regulator_bulk_data supplies[OV5693_NUM_SUPPLIES]; 145 struct clk *xvclk; 146 147 struct ov5693_mode { 148 struct v4l2_rect crop; 149 struct v4l2_mbus_framefmt format; 150 bool binning_x; 151 bool binning_y; 152 unsigned int inc_x_odd; 153 unsigned int inc_y_odd; 154 unsigned int vts; 155 } mode; 156 157 struct v4l2_subdev sd; 158 struct media_pad pad; 159 160 struct ov5693_v4l2_ctrls { 161 struct v4l2_ctrl_handler handler; 162 struct v4l2_ctrl *link_freq; 163 struct v4l2_ctrl *pixel_rate; 164 struct v4l2_ctrl *exposure; 165 struct v4l2_ctrl *analogue_gain; 166 struct v4l2_ctrl *digital_gain; 167 struct v4l2_ctrl *hflip; 168 struct v4l2_ctrl *vflip; 169 struct v4l2_ctrl *hblank; 170 struct v4l2_ctrl *vblank; 171 struct v4l2_ctrl *test_pattern; 172 } ctrls; 173}; 174 175static const struct cci_reg_sequence ov5693_global_regs[] = { 176 {CCI_REG8(0x3016), 0xf0}, 177 {CCI_REG8(0x3017), 0xf0}, 178 {CCI_REG8(0x3018), 0xf0}, 179 {CCI_REG8(0x3022), 0x01}, 180 {CCI_REG8(0x3028), 0x44}, 181 {CCI_REG8(0x3098), 0x02}, 182 {CCI_REG8(0x3099), 0x19}, 183 {CCI_REG8(0x309a), 0x02}, 184 {CCI_REG8(0x309b), 0x01}, 185 {CCI_REG8(0x309c), 0x00}, 186 {CCI_REG8(0x30a0), 0xd2}, 187 {CCI_REG8(0x30a2), 0x01}, 188 {CCI_REG8(0x30b2), 0x00}, 189 {CCI_REG8(0x30b3), 0x83}, 190 {CCI_REG8(0x30b4), 0x03}, 191 {CCI_REG8(0x30b5), 0x04}, 192 {CCI_REG8(0x30b6), 0x01}, 193 {CCI_REG8(0x3080), 0x01}, 194 {CCI_REG8(0x3104), 0x21}, 195 {CCI_REG8(0x3106), 0x00}, 196 {CCI_REG8(0x3406), 0x01}, 197 {CCI_REG8(0x3503), 0x07}, 198 {CCI_REG8(0x350b), 0x40}, 199 {CCI_REG8(0x3601), 0x0a}, 200 {CCI_REG8(0x3602), 0x38}, 201 {CCI_REG8(0x3612), 0x80}, 202 {CCI_REG8(0x3620), 0x54}, 203 {CCI_REG8(0x3621), 0xc7}, 204 {CCI_REG8(0x3622), 0x0f}, 205 {CCI_REG8(0x3625), 0x10}, 206 {CCI_REG8(0x3630), 0x55}, 207 {CCI_REG8(0x3631), 0xf4}, 208 {CCI_REG8(0x3632), 0x00}, 209 {CCI_REG8(0x3633), 0x34}, 210 {CCI_REG8(0x3634), 0x02}, 211 {CCI_REG8(0x364d), 0x0d}, 212 {CCI_REG8(0x364f), 0xdd}, 213 {CCI_REG8(0x3660), 0x04}, 214 {CCI_REG8(0x3662), 0x10}, 215 {CCI_REG8(0x3663), 0xf1}, 216 {CCI_REG8(0x3665), 0x00}, 217 {CCI_REG8(0x3666), 0x20}, 218 {CCI_REG8(0x3667), 0x00}, 219 {CCI_REG8(0x366a), 0x80}, 220 {CCI_REG8(0x3680), 0xe0}, 221 {CCI_REG8(0x3681), 0x00}, 222 {CCI_REG8(0x3700), 0x42}, 223 {CCI_REG8(0x3701), 0x14}, 224 {CCI_REG8(0x3702), 0xa0}, 225 {CCI_REG8(0x3703), 0xd8}, 226 {CCI_REG8(0x3704), 0x78}, 227 {CCI_REG8(0x3705), 0x02}, 228 {CCI_REG8(0x370a), 0x00}, 229 {CCI_REG8(0x370b), 0x20}, 230 {CCI_REG8(0x370c), 0x0c}, 231 {CCI_REG8(0x370d), 0x11}, 232 {CCI_REG8(0x370e), 0x00}, 233 {CCI_REG8(0x370f), 0x40}, 234 {CCI_REG8(0x3710), 0x00}, 235 {CCI_REG8(0x371a), 0x1c}, 236 {CCI_REG8(0x371b), 0x05}, 237 {CCI_REG8(0x371c), 0x01}, 238 {CCI_REG8(0x371e), 0xa1}, 239 {CCI_REG8(0x371f), 0x0c}, 240 {CCI_REG8(0x3721), 0x00}, 241 {CCI_REG8(0x3724), 0x10}, 242 {CCI_REG8(0x3726), 0x00}, 243 {CCI_REG8(0x372a), 0x01}, 244 {CCI_REG8(0x3730), 0x10}, 245 {CCI_REG8(0x3738), 0x22}, 246 {CCI_REG8(0x3739), 0xe5}, 247 {CCI_REG8(0x373a), 0x50}, 248 {CCI_REG8(0x373b), 0x02}, 249 {CCI_REG8(0x373c), 0x41}, 250 {CCI_REG8(0x373f), 0x02}, 251 {CCI_REG8(0x3740), 0x42}, 252 {CCI_REG8(0x3741), 0x02}, 253 {CCI_REG8(0x3742), 0x18}, 254 {CCI_REG8(0x3743), 0x01}, 255 {CCI_REG8(0x3744), 0x02}, 256 {CCI_REG8(0x3747), 0x10}, 257 {CCI_REG8(0x374c), 0x04}, 258 {CCI_REG8(0x3751), 0xf0}, 259 {CCI_REG8(0x3752), 0x00}, 260 {CCI_REG8(0x3753), 0x00}, 261 {CCI_REG8(0x3754), 0xc0}, 262 {CCI_REG8(0x3755), 0x00}, 263 {CCI_REG8(0x3756), 0x1a}, 264 {CCI_REG8(0x3758), 0x00}, 265 {CCI_REG8(0x3759), 0x0f}, 266 {CCI_REG8(0x376b), 0x44}, 267 {CCI_REG8(0x375c), 0x04}, 268 {CCI_REG8(0x3774), 0x10}, 269 {CCI_REG8(0x3776), 0x00}, 270 {CCI_REG8(0x377f), 0x08}, 271 {CCI_REG8(0x3780), 0x22}, 272 {CCI_REG8(0x3781), 0x0c}, 273 {CCI_REG8(0x3784), 0x2c}, 274 {CCI_REG8(0x3785), 0x1e}, 275 {CCI_REG8(0x378f), 0xf5}, 276 {CCI_REG8(0x3791), 0xb0}, 277 {CCI_REG8(0x3795), 0x00}, 278 {CCI_REG8(0x3796), 0x64}, 279 {CCI_REG8(0x3797), 0x11}, 280 {CCI_REG8(0x3798), 0x30}, 281 {CCI_REG8(0x3799), 0x41}, 282 {CCI_REG8(0x379a), 0x07}, 283 {CCI_REG8(0x379b), 0xb0}, 284 {CCI_REG8(0x379c), 0x0c}, 285 {CCI_REG8(0x3a04), 0x06}, 286 {CCI_REG8(0x3a05), 0x14}, 287 {CCI_REG8(0x3e07), 0x20}, 288 {CCI_REG8(0x4000), 0x08}, 289 {CCI_REG8(0x4001), 0x04}, 290 {CCI_REG8(0x4004), 0x08}, 291 {CCI_REG8(0x4006), 0x20}, 292 {CCI_REG8(0x4008), 0x24}, 293 {CCI_REG8(0x4009), 0x10}, 294 {CCI_REG8(0x4058), 0x00}, 295 {CCI_REG8(0x4101), 0xb2}, 296 {CCI_REG8(0x4307), 0x31}, 297 {CCI_REG8(0x4511), 0x05}, 298 {CCI_REG8(0x4512), 0x01}, 299 {CCI_REG8(0x481f), 0x30}, 300 {CCI_REG8(0x4826), 0x2c}, 301 {CCI_REG8(0x4d02), 0xfd}, 302 {CCI_REG8(0x4d03), 0xf5}, 303 {CCI_REG8(0x4d04), 0x0c}, 304 {CCI_REG8(0x4d05), 0xcc}, 305 {CCI_REG8(0x4837), 0x0a}, 306 {CCI_REG8(0x5003), 0x20}, 307 {CCI_REG8(0x5013), 0x00}, 308 {CCI_REG8(0x5842), 0x01}, 309 {CCI_REG8(0x5843), 0x2b}, 310 {CCI_REG8(0x5844), 0x01}, 311 {CCI_REG8(0x5845), 0x92}, 312 {CCI_REG8(0x5846), 0x01}, 313 {CCI_REG8(0x5847), 0x8f}, 314 {CCI_REG8(0x5848), 0x01}, 315 {CCI_REG8(0x5849), 0x0c}, 316 {CCI_REG8(0x5e10), 0x0c}, 317 {CCI_REG8(0x3820), 0x00}, 318 {CCI_REG8(0x3821), 0x1e}, 319 {CCI_REG8(0x5041), 0x14} 320}; 321 322static const struct v4l2_rect ov5693_default_crop = { 323 .left = OV5693_ACTIVE_START_LEFT, 324 .top = OV5693_ACTIVE_START_TOP, 325 .width = OV5693_ACTIVE_WIDTH, 326 .height = OV5693_ACTIVE_HEIGHT, 327}; 328 329static const struct v4l2_mbus_framefmt ov5693_default_fmt = { 330 .width = OV5693_ACTIVE_WIDTH, 331 .height = OV5693_ACTIVE_HEIGHT, 332 .code = MEDIA_BUS_FMT_SBGGR10_1X10, 333}; 334 335static const s64 link_freq_menu_items[] = { 336 OV5693_LINK_FREQ_419_2MHZ 337}; 338 339static const char * const ov5693_test_pattern_menu[] = { 340 "Disabled", 341 "Random Data", 342 "Colour Bars", 343 "Colour Bars with Rolling Bar" 344}; 345 346static const u8 ov5693_test_pattern_bits[] = { 347 0, 348 OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_RANDOM, 349 OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS, 350 OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS | 351 OV5693_TEST_PATTERN_ROLLING, 352}; 353 354/* V4L2 Controls Functions */ 355 356static int ov5693_flip_vert_configure(struct ov5693_device *ov5693, 357 bool enable) 358{ 359 u8 bits = OV5693_FORMAT1_FLIP_VERT_ISP_EN | 360 OV5693_FORMAT1_FLIP_VERT_SENSOR_EN; 361 int ret; 362 363 ret = cci_update_bits(ov5693->regmap, OV5693_FORMAT1_REG, bits, 364 enable ? bits : 0, NULL); 365 if (ret) 366 return ret; 367 368 return 0; 369} 370 371static int ov5693_flip_horz_configure(struct ov5693_device *ov5693, 372 bool enable) 373{ 374 u8 bits = OV5693_FORMAT2_FLIP_HORZ_ISP_EN | 375 OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN; 376 int ret; 377 378 ret = cci_update_bits(ov5693->regmap, OV5693_FORMAT2_REG, bits, 379 enable ? bits : 0, NULL); 380 if (ret) 381 return ret; 382 383 return 0; 384} 385 386static int ov5693_get_exposure(struct ov5693_device *ov5693, s32 *value) 387{ 388 u64 exposure; 389 int ret; 390 391 ret = cci_read(ov5693->regmap, OV5693_EXPOSURE_CTRL_REG, &exposure, 392 NULL); 393 if (ret) 394 return ret; 395 396 /* The lowest 4 bits are unsupported fractional bits */ 397 *value = exposure >> 4; 398 399 return 0; 400} 401 402static int ov5693_exposure_configure(struct ov5693_device *ov5693, 403 u32 exposure) 404{ 405 int ret = 0; 406 407 exposure = (exposure << 4) & OV5693_EXPOSURE_CTRL_MASK; 408 409 cci_write(ov5693->regmap, OV5693_EXPOSURE_CTRL_REG, exposure, &ret); 410 411 return ret; 412} 413 414static int ov5693_get_gain(struct ov5693_device *ov5693, u32 *gain) 415{ 416 u64 value; 417 int ret; 418 419 ret = cci_read(ov5693->regmap, OV5693_GAIN_CTRL_REG, &value, NULL); 420 if (ret) 421 return ret; 422 423 /* As with exposure, the lowest 4 bits are fractional bits. */ 424 *gain = value >> 4; 425 426 return ret; 427} 428 429static int ov5693_digital_gain_configure(struct ov5693_device *ov5693, 430 u32 gain) 431{ 432 int ret = 0; 433 434 gain &= OV5693_MWB_GAIN_MASK; 435 436 cci_write(ov5693->regmap, OV5693_MWB_RED_GAIN_REG, gain, &ret); 437 cci_write(ov5693->regmap, OV5693_MWB_GREEN_GAIN_REG, gain, &ret); 438 cci_write(ov5693->regmap, OV5693_MWB_BLUE_GAIN_REG, gain, &ret); 439 440 return ret; 441} 442 443static int ov5693_analog_gain_configure(struct ov5693_device *ov5693, u32 gain) 444{ 445 int ret = 0; 446 447 gain = (gain << 4) & OV5693_GAIN_CTRL_MASK; 448 449 cci_write(ov5693->regmap, OV5693_GAIN_CTRL_REG, gain, &ret); 450 451 return ret; 452} 453 454static int ov5693_vts_configure(struct ov5693_device *ov5693, u32 vblank) 455{ 456 u16 vts = ov5693->mode.format.height + vblank; 457 int ret = 0; 458 459 cci_write(ov5693->regmap, OV5693_TIMING_VTS_REG, vts, &ret); 460 461 return ret; 462} 463 464static int ov5693_test_pattern_configure(struct ov5693_device *ov5693, u32 idx) 465{ 466 int ret = 0; 467 468 cci_write(ov5693->regmap, OV5693_TEST_PATTERN_REG, 469 ov5693_test_pattern_bits[idx], &ret); 470 471 return ret; 472} 473 474static int ov5693_s_ctrl(struct v4l2_ctrl *ctrl) 475{ 476 struct ov5693_device *ov5693 = 477 container_of(ctrl->handler, struct ov5693_device, ctrls.handler); 478 int ret = 0; 479 480 /* If VBLANK is altered we need to update exposure to compensate */ 481 if (ctrl->id == V4L2_CID_VBLANK) { 482 int exposure_max; 483 484 exposure_max = ov5693->mode.format.height + ctrl->val - 485 OV5693_INTEGRATION_TIME_MARGIN; 486 __v4l2_ctrl_modify_range(ov5693->ctrls.exposure, 487 ov5693->ctrls.exposure->minimum, 488 exposure_max, 489 ov5693->ctrls.exposure->step, 490 min(ov5693->ctrls.exposure->val, 491 exposure_max)); 492 } 493 494 /* Only apply changes to the controls if the device is powered up */ 495 if (!pm_runtime_get_if_in_use(ov5693->dev)) 496 return 0; 497 498 switch (ctrl->id) { 499 case V4L2_CID_EXPOSURE: 500 ret = ov5693_exposure_configure(ov5693, ctrl->val); 501 break; 502 case V4L2_CID_ANALOGUE_GAIN: 503 ret = ov5693_analog_gain_configure(ov5693, ctrl->val); 504 break; 505 case V4L2_CID_DIGITAL_GAIN: 506 ret = ov5693_digital_gain_configure(ov5693, ctrl->val); 507 break; 508 case V4L2_CID_HFLIP: 509 ret = ov5693_flip_horz_configure(ov5693, !!ctrl->val); 510 break; 511 case V4L2_CID_VFLIP: 512 ret = ov5693_flip_vert_configure(ov5693, !!ctrl->val); 513 break; 514 case V4L2_CID_VBLANK: 515 ret = ov5693_vts_configure(ov5693, ctrl->val); 516 break; 517 case V4L2_CID_TEST_PATTERN: 518 ret = ov5693_test_pattern_configure(ov5693, ctrl->val); 519 break; 520 default: 521 ret = -EINVAL; 522 } 523 524 pm_runtime_put(ov5693->dev); 525 526 return ret; 527} 528 529static int ov5693_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 530{ 531 struct ov5693_device *ov5693 = container_of(ctrl->handler, 532 struct ov5693_device, 533 ctrls.handler); 534 535 switch (ctrl->id) { 536 case V4L2_CID_EXPOSURE_ABSOLUTE: 537 return ov5693_get_exposure(ov5693, &ctrl->val); 538 case V4L2_CID_AUTOGAIN: 539 return ov5693_get_gain(ov5693, &ctrl->val); 540 default: 541 return -EINVAL; 542 } 543} 544 545static const struct v4l2_ctrl_ops ov5693_ctrl_ops = { 546 .s_ctrl = ov5693_s_ctrl, 547 .g_volatile_ctrl = ov5693_g_volatile_ctrl 548}; 549 550/* System Control Functions */ 551 552static int ov5693_mode_configure(struct ov5693_device *ov5693) 553{ 554 const struct ov5693_mode *mode = &ov5693->mode; 555 int ret = 0; 556 557 /* Crop Start X */ 558 cci_write(ov5693->regmap, OV5693_CROP_START_X_REG, mode->crop.left, 559 &ret); 560 561 /* Offset X */ 562 cci_write(ov5693->regmap, OV5693_OFFSET_START_X_REG, 0, &ret); 563 564 /* Output Size X */ 565 cci_write(ov5693->regmap, OV5693_OUTPUT_SIZE_X_REG, mode->format.width, 566 &ret); 567 568 /* Crop End X */ 569 cci_write(ov5693->regmap, OV5693_CROP_END_X_REG, 570 mode->crop.left + mode->crop.width, &ret); 571 572 /* Horizontal Total Size */ 573 cci_write(ov5693->regmap, OV5693_TIMING_HTS_REG, OV5693_FIXED_PPL, 574 &ret); 575 576 /* Crop Start Y */ 577 cci_write(ov5693->regmap, OV5693_CROP_START_Y_REG, mode->crop.top, 578 &ret); 579 580 /* Offset Y */ 581 cci_write(ov5693->regmap, OV5693_OFFSET_START_Y_REG, 0, &ret); 582 583 /* Output Size Y */ 584 cci_write(ov5693->regmap, OV5693_OUTPUT_SIZE_Y_REG, mode->format.height, 585 &ret); 586 587 /* Crop End Y */ 588 cci_write(ov5693->regmap, OV5693_CROP_END_Y_REG, 589 mode->crop.top + mode->crop.height, &ret); 590 591 /* Subsample X increase */ 592 cci_write(ov5693->regmap, OV5693_SUB_INC_X_REG, 593 ((mode->inc_x_odd << 4) & 0xf0) | 0x01, &ret); 594 /* Subsample Y increase */ 595 cci_write(ov5693->regmap, OV5693_SUB_INC_Y_REG, 596 ((mode->inc_y_odd << 4) & 0xf0) | 0x01, &ret); 597 598 /* Binning */ 599 cci_update_bits(ov5693->regmap, OV5693_FORMAT1_REG, 600 OV5693_FORMAT1_VBIN_EN, 601 mode->binning_y ? OV5693_FORMAT1_VBIN_EN : 0, &ret); 602 603 cci_update_bits(ov5693->regmap, OV5693_FORMAT2_REG, 604 OV5693_FORMAT2_HBIN_EN, 605 mode->binning_x ? OV5693_FORMAT2_HBIN_EN : 0, &ret); 606 607 return ret; 608} 609 610static int ov5693_enable_streaming(struct ov5693_device *ov5693, bool enable) 611{ 612 int ret = 0; 613 614 cci_write(ov5693->regmap, OV5693_SW_STREAM_REG, 615 enable ? OV5693_START_STREAMING : OV5693_STOP_STREAMING, 616 &ret); 617 618 return ret; 619} 620 621static int ov5693_sw_reset(struct ov5693_device *ov5693) 622{ 623 int ret = 0; 624 625 cci_write(ov5693->regmap, OV5693_SW_RESET_REG, OV5693_SW_RESET, &ret); 626 627 return ret; 628} 629 630static int ov5693_sensor_init(struct ov5693_device *ov5693) 631{ 632 int ret; 633 634 ret = ov5693_sw_reset(ov5693); 635 if (ret) 636 return dev_err_probe(ov5693->dev, ret, 637 "software reset error\n"); 638 639 ret = cci_multi_reg_write(ov5693->regmap, ov5693_global_regs, 640 ARRAY_SIZE(ov5693_global_regs), NULL); 641 if (ret) 642 return dev_err_probe(ov5693->dev, ret, 643 "global settings error\n"); 644 645 ret = ov5693_mode_configure(ov5693); 646 if (ret) 647 return dev_err_probe(ov5693->dev, ret, 648 "mode configure error\n"); 649 650 ret = ov5693_enable_streaming(ov5693, false); 651 if (ret) 652 dev_err(ov5693->dev, "stop streaming error\n"); 653 654 return ret; 655} 656 657static void ov5693_sensor_powerdown(struct ov5693_device *ov5693) 658{ 659 gpiod_set_value_cansleep(ov5693->reset, 1); 660 gpiod_set_value_cansleep(ov5693->powerdown, 1); 661 662 regulator_bulk_disable(OV5693_NUM_SUPPLIES, ov5693->supplies); 663 664 clk_disable_unprepare(ov5693->xvclk); 665} 666 667static int ov5693_sensor_powerup(struct ov5693_device *ov5693) 668{ 669 int ret; 670 671 gpiod_set_value_cansleep(ov5693->reset, 1); 672 gpiod_set_value_cansleep(ov5693->powerdown, 1); 673 674 ret = clk_prepare_enable(ov5693->xvclk); 675 if (ret) { 676 dev_err(ov5693->dev, "Failed to enable clk\n"); 677 goto fail_power; 678 } 679 680 ret = regulator_bulk_enable(OV5693_NUM_SUPPLIES, ov5693->supplies); 681 if (ret) { 682 dev_err(ov5693->dev, "Failed to enable regulators\n"); 683 goto fail_power; 684 } 685 686 gpiod_set_value_cansleep(ov5693->powerdown, 0); 687 gpiod_set_value_cansleep(ov5693->reset, 0); 688 689 usleep_range(5000, 7500); 690 691 return 0; 692 693fail_power: 694 ov5693_sensor_powerdown(ov5693); 695 return ret; 696} 697 698static int __maybe_unused ov5693_sensor_suspend(struct device *dev) 699{ 700 struct v4l2_subdev *sd = dev_get_drvdata(dev); 701 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 702 703 ov5693_sensor_powerdown(ov5693); 704 705 return 0; 706} 707 708static int __maybe_unused ov5693_sensor_resume(struct device *dev) 709{ 710 struct v4l2_subdev *sd = dev_get_drvdata(dev); 711 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 712 int ret; 713 714 mutex_lock(&ov5693->lock); 715 716 ret = ov5693_sensor_powerup(ov5693); 717 if (ret) 718 goto out_unlock; 719 720 ret = ov5693_sensor_init(ov5693); 721 if (ret) { 722 dev_err(dev, "ov5693 sensor init failure\n"); 723 goto err_power; 724 } 725 726 goto out_unlock; 727 728err_power: 729 ov5693_sensor_powerdown(ov5693); 730out_unlock: 731 mutex_unlock(&ov5693->lock); 732 return ret; 733} 734 735static int ov5693_detect(struct ov5693_device *ov5693) 736{ 737 int ret; 738 u64 id; 739 740 ret = cci_read(ov5693->regmap, OV5693_REG_CHIP_ID, &id, NULL); 741 if (ret) 742 return ret; 743 744 if (id != OV5693_CHIP_ID) 745 return dev_err_probe(ov5693->dev, -ENODEV, 746 "sensor ID mismatch. Got 0x%04llx\n", id); 747 748 return 0; 749} 750 751/* V4L2 Framework callbacks */ 752 753static unsigned int __ov5693_calc_vts(u32 height) 754{ 755 /* 756 * We need to set a sensible default VTS for whatever format height we 757 * happen to be given from set_fmt(). This function just targets 758 * an even multiple of 30fps. 759 */ 760 761 unsigned int tgt_fps; 762 763 tgt_fps = rounddown(OV5693_PIXEL_RATE / OV5693_FIXED_PPL / height, 30); 764 765 return ALIGN_DOWN(OV5693_PIXEL_RATE / OV5693_FIXED_PPL / tgt_fps, 2); 766} 767 768static struct v4l2_mbus_framefmt * 769__ov5693_get_pad_format(struct ov5693_device *ov5693, 770 struct v4l2_subdev_state *state, 771 unsigned int pad, enum v4l2_subdev_format_whence which) 772{ 773 switch (which) { 774 case V4L2_SUBDEV_FORMAT_TRY: 775 return v4l2_subdev_state_get_format(state, pad); 776 case V4L2_SUBDEV_FORMAT_ACTIVE: 777 return &ov5693->mode.format; 778 default: 779 return NULL; 780 } 781} 782 783static struct v4l2_rect * 784__ov5693_get_pad_crop(struct ov5693_device *ov5693, 785 struct v4l2_subdev_state *state, 786 unsigned int pad, enum v4l2_subdev_format_whence which) 787{ 788 switch (which) { 789 case V4L2_SUBDEV_FORMAT_TRY: 790 return v4l2_subdev_state_get_crop(state, pad); 791 case V4L2_SUBDEV_FORMAT_ACTIVE: 792 return &ov5693->mode.crop; 793 } 794 795 return NULL; 796} 797 798static int ov5693_get_fmt(struct v4l2_subdev *sd, 799 struct v4l2_subdev_state *state, 800 struct v4l2_subdev_format *format) 801{ 802 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 803 804 format->format = ov5693->mode.format; 805 806 return 0; 807} 808 809static int ov5693_set_fmt(struct v4l2_subdev *sd, 810 struct v4l2_subdev_state *state, 811 struct v4l2_subdev_format *format) 812{ 813 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 814 const struct v4l2_rect *crop; 815 struct v4l2_mbus_framefmt *fmt; 816 unsigned int hratio, vratio; 817 unsigned int width, height; 818 unsigned int hblank; 819 int exposure_max; 820 821 crop = __ov5693_get_pad_crop(ov5693, state, format->pad, format->which); 822 823 /* 824 * Align to two to simplify the binning calculations below, and clamp 825 * the requested format at the crop rectangle 826 */ 827 width = clamp_t(unsigned int, ALIGN(format->format.width, 2), 828 OV5693_MIN_CROP_WIDTH, crop->width); 829 height = clamp_t(unsigned int, ALIGN(format->format.height, 2), 830 OV5693_MIN_CROP_HEIGHT, crop->height); 831 832 /* 833 * We can only support setting either the dimensions of the crop rect 834 * or those dimensions binned (separately) by a factor of two. 835 */ 836 hratio = clamp_t(unsigned int, 837 DIV_ROUND_CLOSEST(crop->width, width), 1, 2); 838 vratio = clamp_t(unsigned int, 839 DIV_ROUND_CLOSEST(crop->height, height), 1, 2); 840 841 fmt = __ov5693_get_pad_format(ov5693, state, format->pad, 842 format->which); 843 844 fmt->width = crop->width / hratio; 845 fmt->height = crop->height / vratio; 846 fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; 847 848 format->format = *fmt; 849 850 if (format->which == V4L2_SUBDEV_FORMAT_TRY) 851 return 0; 852 853 mutex_lock(&ov5693->lock); 854 855 ov5693->mode.binning_x = hratio > 1; 856 ov5693->mode.inc_x_odd = hratio > 1 ? 3 : 1; 857 ov5693->mode.binning_y = vratio > 1; 858 ov5693->mode.inc_y_odd = vratio > 1 ? 3 : 1; 859 860 ov5693->mode.vts = __ov5693_calc_vts(fmt->height); 861 862 __v4l2_ctrl_modify_range(ov5693->ctrls.vblank, 863 OV5693_TIMING_MIN_VTS, 864 OV5693_TIMING_MAX_VTS - fmt->height, 865 1, ov5693->mode.vts - fmt->height); 866 __v4l2_ctrl_s_ctrl(ov5693->ctrls.vblank, 867 ov5693->mode.vts - fmt->height); 868 869 hblank = OV5693_FIXED_PPL - fmt->width; 870 __v4l2_ctrl_modify_range(ov5693->ctrls.hblank, hblank, hblank, 1, 871 hblank); 872 873 exposure_max = ov5693->mode.vts - OV5693_INTEGRATION_TIME_MARGIN; 874 __v4l2_ctrl_modify_range(ov5693->ctrls.exposure, 875 ov5693->ctrls.exposure->minimum, exposure_max, 876 ov5693->ctrls.exposure->step, 877 min(ov5693->ctrls.exposure->val, 878 exposure_max)); 879 880 mutex_unlock(&ov5693->lock); 881 return 0; 882} 883 884static int ov5693_get_selection(struct v4l2_subdev *sd, 885 struct v4l2_subdev_state *state, 886 struct v4l2_subdev_selection *sel) 887{ 888 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 889 890 switch (sel->target) { 891 case V4L2_SEL_TGT_CROP: 892 mutex_lock(&ov5693->lock); 893 sel->r = *__ov5693_get_pad_crop(ov5693, state, sel->pad, 894 sel->which); 895 mutex_unlock(&ov5693->lock); 896 break; 897 case V4L2_SEL_TGT_NATIVE_SIZE: 898 sel->r.top = 0; 899 sel->r.left = 0; 900 sel->r.width = OV5693_NATIVE_WIDTH; 901 sel->r.height = OV5693_NATIVE_HEIGHT; 902 break; 903 case V4L2_SEL_TGT_CROP_BOUNDS: 904 case V4L2_SEL_TGT_CROP_DEFAULT: 905 sel->r.top = OV5693_ACTIVE_START_TOP; 906 sel->r.left = OV5693_ACTIVE_START_LEFT; 907 sel->r.width = OV5693_ACTIVE_WIDTH; 908 sel->r.height = OV5693_ACTIVE_HEIGHT; 909 break; 910 default: 911 return -EINVAL; 912 } 913 914 return 0; 915} 916 917static int ov5693_set_selection(struct v4l2_subdev *sd, 918 struct v4l2_subdev_state *state, 919 struct v4l2_subdev_selection *sel) 920{ 921 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 922 struct v4l2_mbus_framefmt *format; 923 struct v4l2_rect *__crop; 924 struct v4l2_rect rect; 925 926 if (sel->target != V4L2_SEL_TGT_CROP) 927 return -EINVAL; 928 929 /* 930 * Clamp the boundaries of the crop rectangle to the size of the sensor 931 * pixel array. Align to multiples of 2 to ensure Bayer pattern isn't 932 * disrupted. 933 */ 934 rect.left = clamp(ALIGN(sel->r.left, 2), OV5693_NATIVE_START_LEFT, 935 OV5693_NATIVE_WIDTH); 936 rect.top = clamp(ALIGN(sel->r.top, 2), OV5693_NATIVE_START_TOP, 937 OV5693_NATIVE_HEIGHT); 938 rect.width = clamp_t(unsigned int, ALIGN(sel->r.width, 2), 939 OV5693_MIN_CROP_WIDTH, OV5693_NATIVE_WIDTH); 940 rect.height = clamp_t(unsigned int, ALIGN(sel->r.height, 2), 941 OV5693_MIN_CROP_HEIGHT, OV5693_NATIVE_HEIGHT); 942 943 /* Make sure the crop rectangle isn't outside the bounds of the array */ 944 rect.width = min_t(unsigned int, rect.width, 945 OV5693_NATIVE_WIDTH - rect.left); 946 rect.height = min_t(unsigned int, rect.height, 947 OV5693_NATIVE_HEIGHT - rect.top); 948 949 __crop = __ov5693_get_pad_crop(ov5693, state, sel->pad, sel->which); 950 951 if (rect.width != __crop->width || rect.height != __crop->height) { 952 /* 953 * Reset the output image size if the crop rectangle size has 954 * been modified. 955 */ 956 format = __ov5693_get_pad_format(ov5693, state, sel->pad, 957 sel->which); 958 format->width = rect.width; 959 format->height = rect.height; 960 } 961 962 *__crop = rect; 963 sel->r = rect; 964 965 return 0; 966} 967 968static int ov5693_s_stream(struct v4l2_subdev *sd, int enable) 969{ 970 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 971 int ret; 972 973 if (enable) { 974 ret = pm_runtime_resume_and_get(ov5693->dev); 975 if (ret) 976 return ret; 977 978 mutex_lock(&ov5693->lock); 979 ret = __v4l2_ctrl_handler_setup(&ov5693->ctrls.handler); 980 if (ret) { 981 mutex_unlock(&ov5693->lock); 982 goto err_power_down; 983 } 984 985 ret = ov5693_enable_streaming(ov5693, true); 986 mutex_unlock(&ov5693->lock); 987 } else { 988 mutex_lock(&ov5693->lock); 989 ret = ov5693_enable_streaming(ov5693, false); 990 mutex_unlock(&ov5693->lock); 991 } 992 if (ret) 993 goto err_power_down; 994 995 if (!enable) 996 pm_runtime_put(ov5693->dev); 997 998 return 0; 999err_power_down: 1000 pm_runtime_put_noidle(ov5693->dev); 1001 return ret; 1002} 1003 1004static int ov5693_get_frame_interval(struct v4l2_subdev *sd, 1005 struct v4l2_subdev_state *sd_state, 1006 struct v4l2_subdev_frame_interval *interval) 1007{ 1008 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 1009 unsigned int framesize = OV5693_FIXED_PPL * (ov5693->mode.format.height + 1010 ov5693->ctrls.vblank->val); 1011 unsigned int fps = DIV_ROUND_CLOSEST(OV5693_PIXEL_RATE, framesize); 1012 1013 /* 1014 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2 1015 * subdev active state API. 1016 */ 1017 if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE) 1018 return -EINVAL; 1019 1020 interval->interval.numerator = 1; 1021 interval->interval.denominator = fps; 1022 1023 return 0; 1024} 1025 1026static int ov5693_enum_mbus_code(struct v4l2_subdev *sd, 1027 struct v4l2_subdev_state *state, 1028 struct v4l2_subdev_mbus_code_enum *code) 1029{ 1030 /* Only a single mbus format is supported */ 1031 if (code->index > 0) 1032 return -EINVAL; 1033 1034 code->code = MEDIA_BUS_FMT_SBGGR10_1X10; 1035 return 0; 1036} 1037 1038static int ov5693_enum_frame_size(struct v4l2_subdev *sd, 1039 struct v4l2_subdev_state *state, 1040 struct v4l2_subdev_frame_size_enum *fse) 1041{ 1042 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 1043 struct v4l2_rect *__crop; 1044 1045 if (fse->index > 1 || fse->code != MEDIA_BUS_FMT_SBGGR10_1X10) 1046 return -EINVAL; 1047 1048 __crop = __ov5693_get_pad_crop(ov5693, state, fse->pad, fse->which); 1049 if (!__crop) 1050 return -EINVAL; 1051 1052 fse->min_width = __crop->width / (fse->index + 1); 1053 fse->min_height = __crop->height / (fse->index + 1); 1054 fse->max_width = fse->min_width; 1055 fse->max_height = fse->min_height; 1056 1057 return 0; 1058} 1059 1060static const struct v4l2_subdev_video_ops ov5693_video_ops = { 1061 .s_stream = ov5693_s_stream, 1062}; 1063 1064static const struct v4l2_subdev_pad_ops ov5693_pad_ops = { 1065 .enum_mbus_code = ov5693_enum_mbus_code, 1066 .enum_frame_size = ov5693_enum_frame_size, 1067 .get_fmt = ov5693_get_fmt, 1068 .set_fmt = ov5693_set_fmt, 1069 .get_selection = ov5693_get_selection, 1070 .set_selection = ov5693_set_selection, 1071 .get_frame_interval = ov5693_get_frame_interval, 1072}; 1073 1074static const struct v4l2_subdev_ops ov5693_ops = { 1075 .video = &ov5693_video_ops, 1076 .pad = &ov5693_pad_ops, 1077}; 1078 1079/* Sensor and Driver Configuration Functions */ 1080 1081static int ov5693_init_controls(struct ov5693_device *ov5693) 1082{ 1083 const struct v4l2_ctrl_ops *ops = &ov5693_ctrl_ops; 1084 struct ov5693_v4l2_ctrls *ctrls = &ov5693->ctrls; 1085 struct v4l2_fwnode_device_properties props; 1086 int vblank_max, vblank_def; 1087 int exposure_max; 1088 int hblank; 1089 int ret; 1090 1091 ret = v4l2_ctrl_handler_init(&ctrls->handler, 12); 1092 if (ret) 1093 return ret; 1094 1095 /* link freq */ 1096 ctrls->link_freq = v4l2_ctrl_new_int_menu(&ctrls->handler, 1097 NULL, V4L2_CID_LINK_FREQ, 1098 0, 0, link_freq_menu_items); 1099 if (ctrls->link_freq) 1100 ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1101 1102 /* pixel rate */ 1103 ctrls->pixel_rate = v4l2_ctrl_new_std(&ctrls->handler, NULL, 1104 V4L2_CID_PIXEL_RATE, 0, 1105 OV5693_PIXEL_RATE, 1, 1106 OV5693_PIXEL_RATE); 1107 1108 /* Exposure */ 1109 exposure_max = ov5693->mode.vts - OV5693_INTEGRATION_TIME_MARGIN; 1110 ctrls->exposure = v4l2_ctrl_new_std(&ctrls->handler, ops, 1111 V4L2_CID_EXPOSURE, 1112 OV5693_EXPOSURE_MIN, exposure_max, 1113 OV5693_EXPOSURE_STEP, exposure_max); 1114 1115 /* Gain */ 1116 ctrls->analogue_gain = v4l2_ctrl_new_std(&ctrls->handler, 1117 ops, V4L2_CID_ANALOGUE_GAIN, 1118 OV5693_GAIN_MIN, 1119 OV5693_GAIN_MAX, 1120 OV5693_GAIN_STEP, 1121 OV5693_GAIN_DEF); 1122 1123 ctrls->digital_gain = v4l2_ctrl_new_std(&ctrls->handler, ops, 1124 V4L2_CID_DIGITAL_GAIN, 1125 OV5693_DIGITAL_GAIN_MIN, 1126 OV5693_DIGITAL_GAIN_MAX, 1127 OV5693_DIGITAL_GAIN_STEP, 1128 OV5693_DIGITAL_GAIN_DEF); 1129 1130 /* Flip */ 1131 ctrls->hflip = v4l2_ctrl_new_std(&ctrls->handler, ops, 1132 V4L2_CID_HFLIP, 0, 1, 1, 0); 1133 1134 ctrls->vflip = v4l2_ctrl_new_std(&ctrls->handler, ops, 1135 V4L2_CID_VFLIP, 0, 1, 1, 0); 1136 1137 hblank = OV5693_FIXED_PPL - ov5693->mode.format.width; 1138 ctrls->hblank = v4l2_ctrl_new_std(&ctrls->handler, ops, 1139 V4L2_CID_HBLANK, hblank, 1140 hblank, 1, hblank); 1141 1142 if (ctrls->hblank) 1143 ctrls->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1144 1145 vblank_max = OV5693_TIMING_MAX_VTS - ov5693->mode.format.height; 1146 vblank_def = ov5693->mode.vts - ov5693->mode.format.height; 1147 ctrls->vblank = v4l2_ctrl_new_std(&ctrls->handler, ops, 1148 V4L2_CID_VBLANK, 1149 OV5693_TIMING_MIN_VTS, 1150 vblank_max, 1, vblank_def); 1151 1152 ctrls->test_pattern = v4l2_ctrl_new_std_menu_items( 1153 &ctrls->handler, ops, 1154 V4L2_CID_TEST_PATTERN, 1155 ARRAY_SIZE(ov5693_test_pattern_menu) - 1, 1156 0, 0, ov5693_test_pattern_menu); 1157 1158 if (ctrls->handler.error) { 1159 dev_err(ov5693->dev, "Error initialising v4l2 ctrls\n"); 1160 ret = ctrls->handler.error; 1161 goto err_free_handler; 1162 } 1163 1164 /* set properties from fwnode (e.g. rotation, orientation) */ 1165 ret = v4l2_fwnode_device_parse(ov5693->dev, &props); 1166 if (ret) 1167 goto err_free_handler; 1168 1169 ret = v4l2_ctrl_new_fwnode_properties(&ctrls->handler, ops, 1170 &props); 1171 if (ret) 1172 goto err_free_handler; 1173 1174 /* Use same lock for controls as for everything else. */ 1175 ctrls->handler.lock = &ov5693->lock; 1176 ov5693->sd.ctrl_handler = &ctrls->handler; 1177 1178 return 0; 1179 1180err_free_handler: 1181 v4l2_ctrl_handler_free(&ctrls->handler); 1182 return ret; 1183} 1184 1185static int ov5693_configure_gpios(struct ov5693_device *ov5693) 1186{ 1187 ov5693->reset = devm_gpiod_get_optional(ov5693->dev, "reset", 1188 GPIOD_OUT_HIGH); 1189 if (IS_ERR(ov5693->reset)) { 1190 dev_err(ov5693->dev, "Error fetching reset GPIO\n"); 1191 return PTR_ERR(ov5693->reset); 1192 } 1193 1194 ov5693->powerdown = devm_gpiod_get_optional(ov5693->dev, "powerdown", 1195 GPIOD_OUT_HIGH); 1196 if (IS_ERR(ov5693->powerdown)) { 1197 dev_err(ov5693->dev, "Error fetching powerdown GPIO\n"); 1198 return PTR_ERR(ov5693->powerdown); 1199 } 1200 1201 return 0; 1202} 1203 1204static int ov5693_get_regulators(struct ov5693_device *ov5693) 1205{ 1206 unsigned int i; 1207 1208 for (i = 0; i < OV5693_NUM_SUPPLIES; i++) 1209 ov5693->supplies[i].supply = ov5693_supply_names[i]; 1210 1211 return devm_regulator_bulk_get(ov5693->dev, OV5693_NUM_SUPPLIES, 1212 ov5693->supplies); 1213} 1214 1215static int ov5693_check_hwcfg(struct ov5693_device *ov5693) 1216{ 1217 struct fwnode_handle *fwnode = dev_fwnode(ov5693->dev); 1218 struct v4l2_fwnode_endpoint bus_cfg = { 1219 .bus_type = V4L2_MBUS_CSI2_DPHY, 1220 }; 1221 struct fwnode_handle *endpoint; 1222 unsigned int i; 1223 int ret; 1224 1225 /* 1226 * Sometimes the fwnode graph is initialized by the bridge driver 1227 * Bridge drivers doing this may also add GPIO mappings, wait for this. 1228 */ 1229 endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL); 1230 if (!endpoint) 1231 return dev_err_probe(ov5693->dev, -EPROBE_DEFER, 1232 "waiting for fwnode graph endpoint\n"); 1233 1234 ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &bus_cfg); 1235 fwnode_handle_put(endpoint); 1236 if (ret) 1237 return ret; 1238 1239 if (bus_cfg.bus.mipi_csi2.num_data_lanes != 2) { 1240 dev_err(ov5693->dev, "only a 2-lane CSI2 config is supported"); 1241 ret = -EINVAL; 1242 goto out_free_bus_cfg; 1243 } 1244 1245 if (!bus_cfg.nr_of_link_frequencies) { 1246 dev_err(ov5693->dev, "no link frequencies defined\n"); 1247 ret = -EINVAL; 1248 goto out_free_bus_cfg; 1249 } 1250 1251 for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) 1252 if (bus_cfg.link_frequencies[i] == OV5693_LINK_FREQ_419_2MHZ) 1253 break; 1254 1255 if (i == bus_cfg.nr_of_link_frequencies) { 1256 dev_err(ov5693->dev, "supported link freq %ull not found\n", 1257 OV5693_LINK_FREQ_419_2MHZ); 1258 ret = -EINVAL; 1259 goto out_free_bus_cfg; 1260 } 1261 1262out_free_bus_cfg: 1263 v4l2_fwnode_endpoint_free(&bus_cfg); 1264 1265 return ret; 1266} 1267 1268static int ov5693_probe(struct i2c_client *client) 1269{ 1270 struct ov5693_device *ov5693; 1271 u32 xvclk_rate; 1272 int ret = 0; 1273 1274 ov5693 = devm_kzalloc(&client->dev, sizeof(*ov5693), GFP_KERNEL); 1275 if (!ov5693) 1276 return -ENOMEM; 1277 1278 ov5693->dev = &client->dev; 1279 1280 ov5693->regmap = devm_cci_regmap_init_i2c(client, 16); 1281 if (IS_ERR(ov5693->regmap)) 1282 return PTR_ERR(ov5693->regmap); 1283 1284 ret = ov5693_check_hwcfg(ov5693); 1285 if (ret) 1286 return ret; 1287 1288 mutex_init(&ov5693->lock); 1289 1290 v4l2_i2c_subdev_init(&ov5693->sd, client, &ov5693_ops); 1291 1292 ov5693->xvclk = devm_v4l2_sensor_clk_get(&client->dev, "xvclk"); 1293 if (IS_ERR(ov5693->xvclk)) 1294 return dev_err_probe(&client->dev, PTR_ERR(ov5693->xvclk), 1295 "failed to get xvclk: %pe\n", 1296 ov5693->xvclk); 1297 1298 xvclk_rate = clk_get_rate(ov5693->xvclk); 1299 if (xvclk_rate != OV5693_XVCLK_FREQ) 1300 dev_warn(&client->dev, "Found clk freq %u, expected %u\n", 1301 xvclk_rate, OV5693_XVCLK_FREQ); 1302 1303 ret = ov5693_configure_gpios(ov5693); 1304 if (ret) 1305 return ret; 1306 1307 ret = ov5693_get_regulators(ov5693); 1308 if (ret) 1309 return dev_err_probe(&client->dev, ret, 1310 "Error fetching regulators\n"); 1311 1312 ov5693->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1313 ov5693->pad.flags = MEDIA_PAD_FL_SOURCE; 1314 ov5693->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 1315 1316 ov5693->mode.crop = ov5693_default_crop; 1317 ov5693->mode.format = ov5693_default_fmt; 1318 ov5693->mode.vts = __ov5693_calc_vts(ov5693->mode.format.height); 1319 1320 ret = ov5693_init_controls(ov5693); 1321 if (ret) 1322 return ret; 1323 1324 ret = media_entity_pads_init(&ov5693->sd.entity, 1, &ov5693->pad); 1325 if (ret) 1326 goto err_ctrl_handler_free; 1327 1328 /* 1329 * We need the driver to work in the event that pm runtime is disable in 1330 * the kernel, so power up and verify the chip now. In the event that 1331 * runtime pm is disabled this will leave the chip on, so that streaming 1332 * will work. 1333 */ 1334 1335 ret = ov5693_sensor_powerup(ov5693); 1336 if (ret) 1337 goto err_media_entity_cleanup; 1338 1339 ret = ov5693_detect(ov5693); 1340 if (ret) 1341 goto err_powerdown; 1342 1343 pm_runtime_set_active(&client->dev); 1344 pm_runtime_get_noresume(&client->dev); 1345 pm_runtime_enable(&client->dev); 1346 1347 ret = v4l2_async_register_subdev_sensor(&ov5693->sd); 1348 if (ret) { 1349 dev_err(&client->dev, "failed to register V4L2 subdev: %d", 1350 ret); 1351 goto err_pm_runtime; 1352 } 1353 1354 pm_runtime_set_autosuspend_delay(&client->dev, 1000); 1355 pm_runtime_use_autosuspend(&client->dev); 1356 pm_runtime_put_autosuspend(&client->dev); 1357 1358 return ret; 1359 1360err_pm_runtime: 1361 pm_runtime_disable(&client->dev); 1362 pm_runtime_put_noidle(&client->dev); 1363err_powerdown: 1364 ov5693_sensor_powerdown(ov5693); 1365err_media_entity_cleanup: 1366 media_entity_cleanup(&ov5693->sd.entity); 1367err_ctrl_handler_free: 1368 v4l2_ctrl_handler_free(&ov5693->ctrls.handler); 1369 1370 return ret; 1371} 1372 1373static void ov5693_remove(struct i2c_client *client) 1374{ 1375 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1376 struct ov5693_device *ov5693 = to_ov5693_sensor(sd); 1377 1378 v4l2_async_unregister_subdev(sd); 1379 media_entity_cleanup(&ov5693->sd.entity); 1380 v4l2_ctrl_handler_free(&ov5693->ctrls.handler); 1381 mutex_destroy(&ov5693->lock); 1382 1383 /* 1384 * Disable runtime PM. In case runtime PM is disabled in the kernel, 1385 * make sure to turn power off manually. 1386 */ 1387 pm_runtime_disable(&client->dev); 1388 if (!pm_runtime_status_suspended(&client->dev)) 1389 ov5693_sensor_powerdown(ov5693); 1390 pm_runtime_set_suspended(&client->dev); 1391} 1392 1393static const struct dev_pm_ops ov5693_pm_ops = { 1394 SET_RUNTIME_PM_OPS(ov5693_sensor_suspend, ov5693_sensor_resume, NULL) 1395}; 1396 1397static const struct acpi_device_id ov5693_acpi_match[] = { 1398 {"INT33BE"}, 1399 {}, 1400}; 1401MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match); 1402 1403static const struct of_device_id ov5693_of_match[] = { 1404 { .compatible = "ovti,ov5693", }, 1405 { /* sentinel */ }, 1406}; 1407MODULE_DEVICE_TABLE(of, ov5693_of_match); 1408 1409static struct i2c_driver ov5693_driver = { 1410 .driver = { 1411 .name = "ov5693", 1412 .acpi_match_table = ov5693_acpi_match, 1413 .of_match_table = ov5693_of_match, 1414 .pm = &ov5693_pm_ops, 1415 }, 1416 .probe = ov5693_probe, 1417 .remove = ov5693_remove, 1418}; 1419module_i2c_driver(ov5693_driver); 1420 1421MODULE_DESCRIPTION("A low-level driver for OmniVision 5693 sensors"); 1422MODULE_LICENSE("GPL");
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