1 /* 2 * Driver for the OV5645 camera sensor. 3 * 4 * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved. 5 * Copyright (C) 2015 By Tech Design S.L. All Rights Reserved. 6 * Copyright (C) 2012-2013 Freescale Semiconductor, Inc. All Rights Reserved. 7 * 8 * Based on: 9 * - the OV5645 driver from QC msm-3.10 kernel on codeaurora.org: 10 * https://us.codeaurora.org/cgit/quic/la/kernel/msm-3.10/tree/drivers/ 11 * media/platform/msm/camera_v2/sensor/ov5645.c?h=LA.BR.1.2.4_rb1.41 12 * - the OV5640 driver posted on linux-media: 13 * https://www.mail-archive.com/linux-media%40vger.kernel.org/msg92671.html 14 */ 15 16 /* 17 * This program is free software; you can redistribute it and/or modify 18 * it under the terms of the GNU General Public License as published by 19 * the Free Software Foundation; either version 2 of the License, or 20 * (at your option) any later version. 21 22 * This program is distributed in the hope that it will be useful, 23 * but WITHOUT ANY WARRANTY; without even the implied warranty of 24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 25 * GNU General Public License for more details. 26 */ 27 28 #include <linux/bitops.h> 29 #include <linux/clk.h> 30 #include <linux/delay.h> 31 #include <linux/device.h> 32 #include <linux/gpio/consumer.h> 33 #include <linux/i2c.h> 34 #include <linux/init.h> 35 #include <linux/module.h> 36 #include <linux/of.h> 37 #include <linux/of_graph.h> 38 #include <linux/regulator/consumer.h> 39 #include <linux/slab.h> 40 #include <linux/types.h> 41 #include <media/v4l2-ctrls.h> 42 #include <media/v4l2-fwnode.h> 43 #include <media/v4l2-subdev.h> 44 45 #define OV5645_VOLTAGE_ANALOG 2800000 46 #define OV5645_VOLTAGE_DIGITAL_CORE 1500000 47 #define OV5645_VOLTAGE_DIGITAL_IO 1800000 48 49 #define OV5645_SYSTEM_CTRL0 0x3008 50 #define OV5645_SYSTEM_CTRL0_START 0x02 51 #define OV5645_SYSTEM_CTRL0_STOP 0x42 52 #define OV5645_CHIP_ID_HIGH 0x300a 53 #define OV5645_CHIP_ID_HIGH_BYTE 0x56 54 #define OV5645_CHIP_ID_LOW 0x300b 55 #define OV5645_CHIP_ID_LOW_BYTE 0x45 56 #define OV5645_AWB_MANUAL_CONTROL 0x3406 57 #define OV5645_AWB_MANUAL_ENABLE BIT(0) 58 #define OV5645_AEC_PK_MANUAL 0x3503 59 #define OV5645_AEC_MANUAL_ENABLE BIT(0) 60 #define OV5645_AGC_MANUAL_ENABLE BIT(1) 61 #define OV5645_TIMING_TC_REG20 0x3820 62 #define OV5645_SENSOR_VFLIP BIT(1) 63 #define OV5645_ISP_VFLIP BIT(2) 64 #define OV5645_TIMING_TC_REG21 0x3821 65 #define OV5645_SENSOR_MIRROR BIT(1) 66 #define OV5645_PRE_ISP_TEST_SETTING_1 0x503d 67 #define OV5645_TEST_PATTERN_MASK 0x3 68 #define OV5645_SET_TEST_PATTERN(x) ((x) & OV5645_TEST_PATTERN_MASK) 69 #define OV5645_TEST_PATTERN_ENABLE BIT(7) 70 #define OV5645_SDE_SAT_U 0x5583 71 #define OV5645_SDE_SAT_V 0x5584 72 73 struct reg_value { 74 u16 reg; 75 u8 val; 76 }; 77 78 struct ov5645_mode_info { 79 u32 width; 80 u32 height; 81 const struct reg_value *data; 82 u32 data_size; 83 u32 pixel_clock; 84 u32 link_freq; 85 }; 86 87 struct ov5645 { 88 struct i2c_client *i2c_client; 89 struct device *dev; 90 struct v4l2_subdev sd; 91 struct media_pad pad; 92 struct v4l2_fwnode_endpoint ep; 93 struct v4l2_mbus_framefmt fmt; 94 struct v4l2_rect crop; 95 struct clk *xclk; 96 97 struct regulator *io_regulator; 98 struct regulator *core_regulator; 99 struct regulator *analog_regulator; 100 101 const struct ov5645_mode_info *current_mode; 102 103 struct v4l2_ctrl_handler ctrls; 104 struct v4l2_ctrl *pixel_clock; 105 struct v4l2_ctrl *link_freq; 106 107 /* Cached register values */ 108 u8 aec_pk_manual; 109 u8 timing_tc_reg20; 110 u8 timing_tc_reg21; 111 112 struct mutex power_lock; /* lock to protect power state */ 113 int power_count; 114 115 struct gpio_desc *enable_gpio; 116 struct gpio_desc *rst_gpio; 117 }; 118 119 static inline struct ov5645 *to_ov5645(struct v4l2_subdev *sd) 120 { 121 return container_of(sd, struct ov5645, sd); 122 } 123 124 static const struct reg_value ov5645_global_init_setting[] = { 125 { 0x3103, 0x11 }, 126 { 0x3008, 0x82 }, 127 { 0x3008, 0x42 }, 128 { 0x3103, 0x03 }, 129 { 0x3503, 0x07 }, 130 { 0x3002, 0x1c }, 131 { 0x3006, 0xc3 }, 132 { 0x300e, 0x45 }, 133 { 0x3017, 0x00 }, 134 { 0x3018, 0x00 }, 135 { 0x302e, 0x0b }, 136 { 0x3037, 0x13 }, 137 { 0x3108, 0x01 }, 138 { 0x3611, 0x06 }, 139 { 0x3500, 0x00 }, 140 { 0x3501, 0x01 }, 141 { 0x3502, 0x00 }, 142 { 0x350a, 0x00 }, 143 { 0x350b, 0x3f }, 144 { 0x3620, 0x33 }, 145 { 0x3621, 0xe0 }, 146 { 0x3622, 0x01 }, 147 { 0x3630, 0x2e }, 148 { 0x3631, 0x00 }, 149 { 0x3632, 0x32 }, 150 { 0x3633, 0x52 }, 151 { 0x3634, 0x70 }, 152 { 0x3635, 0x13 }, 153 { 0x3636, 0x03 }, 154 { 0x3703, 0x5a }, 155 { 0x3704, 0xa0 }, 156 { 0x3705, 0x1a }, 157 { 0x3709, 0x12 }, 158 { 0x370b, 0x61 }, 159 { 0x370f, 0x10 }, 160 { 0x3715, 0x78 }, 161 { 0x3717, 0x01 }, 162 { 0x371b, 0x20 }, 163 { 0x3731, 0x12 }, 164 { 0x3901, 0x0a }, 165 { 0x3905, 0x02 }, 166 { 0x3906, 0x10 }, 167 { 0x3719, 0x86 }, 168 { 0x3810, 0x00 }, 169 { 0x3811, 0x10 }, 170 { 0x3812, 0x00 }, 171 { 0x3821, 0x01 }, 172 { 0x3824, 0x01 }, 173 { 0x3826, 0x03 }, 174 { 0x3828, 0x08 }, 175 { 0x3a19, 0xf8 }, 176 { 0x3c01, 0x34 }, 177 { 0x3c04, 0x28 }, 178 { 0x3c05, 0x98 }, 179 { 0x3c07, 0x07 }, 180 { 0x3c09, 0xc2 }, 181 { 0x3c0a, 0x9c }, 182 { 0x3c0b, 0x40 }, 183 { 0x3c01, 0x34 }, 184 { 0x4001, 0x02 }, 185 { 0x4514, 0x00 }, 186 { 0x4520, 0xb0 }, 187 { 0x460b, 0x37 }, 188 { 0x460c, 0x20 }, 189 { 0x4818, 0x01 }, 190 { 0x481d, 0xf0 }, 191 { 0x481f, 0x50 }, 192 { 0x4823, 0x70 }, 193 { 0x4831, 0x14 }, 194 { 0x5000, 0xa7 }, 195 { 0x5001, 0x83 }, 196 { 0x501d, 0x00 }, 197 { 0x501f, 0x00 }, 198 { 0x503d, 0x00 }, 199 { 0x505c, 0x30 }, 200 { 0x5181, 0x59 }, 201 { 0x5183, 0x00 }, 202 { 0x5191, 0xf0 }, 203 { 0x5192, 0x03 }, 204 { 0x5684, 0x10 }, 205 { 0x5685, 0xa0 }, 206 { 0x5686, 0x0c }, 207 { 0x5687, 0x78 }, 208 { 0x5a00, 0x08 }, 209 { 0x5a21, 0x00 }, 210 { 0x5a24, 0x00 }, 211 { 0x3008, 0x02 }, 212 { 0x3503, 0x00 }, 213 { 0x5180, 0xff }, 214 { 0x5181, 0xf2 }, 215 { 0x5182, 0x00 }, 216 { 0x5183, 0x14 }, 217 { 0x5184, 0x25 }, 218 { 0x5185, 0x24 }, 219 { 0x5186, 0x09 }, 220 { 0x5187, 0x09 }, 221 { 0x5188, 0x0a }, 222 { 0x5189, 0x75 }, 223 { 0x518a, 0x52 }, 224 { 0x518b, 0xea }, 225 { 0x518c, 0xa8 }, 226 { 0x518d, 0x42 }, 227 { 0x518e, 0x38 }, 228 { 0x518f, 0x56 }, 229 { 0x5190, 0x42 }, 230 { 0x5191, 0xf8 }, 231 { 0x5192, 0x04 }, 232 { 0x5193, 0x70 }, 233 { 0x5194, 0xf0 }, 234 { 0x5195, 0xf0 }, 235 { 0x5196, 0x03 }, 236 { 0x5197, 0x01 }, 237 { 0x5198, 0x04 }, 238 { 0x5199, 0x12 }, 239 { 0x519a, 0x04 }, 240 { 0x519b, 0x00 }, 241 { 0x519c, 0x06 }, 242 { 0x519d, 0x82 }, 243 { 0x519e, 0x38 }, 244 { 0x5381, 0x1e }, 245 { 0x5382, 0x5b }, 246 { 0x5383, 0x08 }, 247 { 0x5384, 0x0a }, 248 { 0x5385, 0x7e }, 249 { 0x5386, 0x88 }, 250 { 0x5387, 0x7c }, 251 { 0x5388, 0x6c }, 252 { 0x5389, 0x10 }, 253 { 0x538a, 0x01 }, 254 { 0x538b, 0x98 }, 255 { 0x5300, 0x08 }, 256 { 0x5301, 0x30 }, 257 { 0x5302, 0x10 }, 258 { 0x5303, 0x00 }, 259 { 0x5304, 0x08 }, 260 { 0x5305, 0x30 }, 261 { 0x5306, 0x08 }, 262 { 0x5307, 0x16 }, 263 { 0x5309, 0x08 }, 264 { 0x530a, 0x30 }, 265 { 0x530b, 0x04 }, 266 { 0x530c, 0x06 }, 267 { 0x5480, 0x01 }, 268 { 0x5481, 0x08 }, 269 { 0x5482, 0x14 }, 270 { 0x5483, 0x28 }, 271 { 0x5484, 0x51 }, 272 { 0x5485, 0x65 }, 273 { 0x5486, 0x71 }, 274 { 0x5487, 0x7d }, 275 { 0x5488, 0x87 }, 276 { 0x5489, 0x91 }, 277 { 0x548a, 0x9a }, 278 { 0x548b, 0xaa }, 279 { 0x548c, 0xb8 }, 280 { 0x548d, 0xcd }, 281 { 0x548e, 0xdd }, 282 { 0x548f, 0xea }, 283 { 0x5490, 0x1d }, 284 { 0x5580, 0x02 }, 285 { 0x5583, 0x40 }, 286 { 0x5584, 0x10 }, 287 { 0x5589, 0x10 }, 288 { 0x558a, 0x00 }, 289 { 0x558b, 0xf8 }, 290 { 0x5800, 0x3f }, 291 { 0x5801, 0x16 }, 292 { 0x5802, 0x0e }, 293 { 0x5803, 0x0d }, 294 { 0x5804, 0x17 }, 295 { 0x5805, 0x3f }, 296 { 0x5806, 0x0b }, 297 { 0x5807, 0x06 }, 298 { 0x5808, 0x04 }, 299 { 0x5809, 0x04 }, 300 { 0x580a, 0x06 }, 301 { 0x580b, 0x0b }, 302 { 0x580c, 0x09 }, 303 { 0x580d, 0x03 }, 304 { 0x580e, 0x00 }, 305 { 0x580f, 0x00 }, 306 { 0x5810, 0x03 }, 307 { 0x5811, 0x08 }, 308 { 0x5812, 0x0a }, 309 { 0x5813, 0x03 }, 310 { 0x5814, 0x00 }, 311 { 0x5815, 0x00 }, 312 { 0x5816, 0x04 }, 313 { 0x5817, 0x09 }, 314 { 0x5818, 0x0f }, 315 { 0x5819, 0x08 }, 316 { 0x581a, 0x06 }, 317 { 0x581b, 0x06 }, 318 { 0x581c, 0x08 }, 319 { 0x581d, 0x0c }, 320 { 0x581e, 0x3f }, 321 { 0x581f, 0x1e }, 322 { 0x5820, 0x12 }, 323 { 0x5821, 0x13 }, 324 { 0x5822, 0x21 }, 325 { 0x5823, 0x3f }, 326 { 0x5824, 0x68 }, 327 { 0x5825, 0x28 }, 328 { 0x5826, 0x2c }, 329 { 0x5827, 0x28 }, 330 { 0x5828, 0x08 }, 331 { 0x5829, 0x48 }, 332 { 0x582a, 0x64 }, 333 { 0x582b, 0x62 }, 334 { 0x582c, 0x64 }, 335 { 0x582d, 0x28 }, 336 { 0x582e, 0x46 }, 337 { 0x582f, 0x62 }, 338 { 0x5830, 0x60 }, 339 { 0x5831, 0x62 }, 340 { 0x5832, 0x26 }, 341 { 0x5833, 0x48 }, 342 { 0x5834, 0x66 }, 343 { 0x5835, 0x44 }, 344 { 0x5836, 0x64 }, 345 { 0x5837, 0x28 }, 346 { 0x5838, 0x66 }, 347 { 0x5839, 0x48 }, 348 { 0x583a, 0x2c }, 349 { 0x583b, 0x28 }, 350 { 0x583c, 0x26 }, 351 { 0x583d, 0xae }, 352 { 0x5025, 0x00 }, 353 { 0x3a0f, 0x30 }, 354 { 0x3a10, 0x28 }, 355 { 0x3a1b, 0x30 }, 356 { 0x3a1e, 0x26 }, 357 { 0x3a11, 0x60 }, 358 { 0x3a1f, 0x14 }, 359 { 0x0601, 0x02 }, 360 { 0x3008, 0x42 }, 361 { 0x3008, 0x02 } 362 }; 363 364 static const struct reg_value ov5645_setting_sxga[] = { 365 { 0x3612, 0xa9 }, 366 { 0x3614, 0x50 }, 367 { 0x3618, 0x00 }, 368 { 0x3034, 0x18 }, 369 { 0x3035, 0x21 }, 370 { 0x3036, 0x70 }, 371 { 0x3600, 0x09 }, 372 { 0x3601, 0x43 }, 373 { 0x3708, 0x66 }, 374 { 0x370c, 0xc3 }, 375 { 0x3800, 0x00 }, 376 { 0x3801, 0x00 }, 377 { 0x3802, 0x00 }, 378 { 0x3803, 0x06 }, 379 { 0x3804, 0x0a }, 380 { 0x3805, 0x3f }, 381 { 0x3806, 0x07 }, 382 { 0x3807, 0x9d }, 383 { 0x3808, 0x05 }, 384 { 0x3809, 0x00 }, 385 { 0x380a, 0x03 }, 386 { 0x380b, 0xc0 }, 387 { 0x380c, 0x07 }, 388 { 0x380d, 0x68 }, 389 { 0x380e, 0x03 }, 390 { 0x380f, 0xd8 }, 391 { 0x3813, 0x06 }, 392 { 0x3814, 0x31 }, 393 { 0x3815, 0x31 }, 394 { 0x3820, 0x47 }, 395 { 0x3a02, 0x03 }, 396 { 0x3a03, 0xd8 }, 397 { 0x3a08, 0x01 }, 398 { 0x3a09, 0xf8 }, 399 { 0x3a0a, 0x01 }, 400 { 0x3a0b, 0xa4 }, 401 { 0x3a0e, 0x02 }, 402 { 0x3a0d, 0x02 }, 403 { 0x3a14, 0x03 }, 404 { 0x3a15, 0xd8 }, 405 { 0x3a18, 0x00 }, 406 { 0x4004, 0x02 }, 407 { 0x4005, 0x18 }, 408 { 0x4300, 0x32 }, 409 { 0x4202, 0x00 } 410 }; 411 412 static const struct reg_value ov5645_setting_1080p[] = { 413 { 0x3612, 0xab }, 414 { 0x3614, 0x50 }, 415 { 0x3618, 0x04 }, 416 { 0x3034, 0x18 }, 417 { 0x3035, 0x11 }, 418 { 0x3036, 0x54 }, 419 { 0x3600, 0x08 }, 420 { 0x3601, 0x33 }, 421 { 0x3708, 0x63 }, 422 { 0x370c, 0xc0 }, 423 { 0x3800, 0x01 }, 424 { 0x3801, 0x50 }, 425 { 0x3802, 0x01 }, 426 { 0x3803, 0xb2 }, 427 { 0x3804, 0x08 }, 428 { 0x3805, 0xef }, 429 { 0x3806, 0x05 }, 430 { 0x3807, 0xf1 }, 431 { 0x3808, 0x07 }, 432 { 0x3809, 0x80 }, 433 { 0x380a, 0x04 }, 434 { 0x380b, 0x38 }, 435 { 0x380c, 0x09 }, 436 { 0x380d, 0xc4 }, 437 { 0x380e, 0x04 }, 438 { 0x380f, 0x60 }, 439 { 0x3813, 0x04 }, 440 { 0x3814, 0x11 }, 441 { 0x3815, 0x11 }, 442 { 0x3820, 0x47 }, 443 { 0x4514, 0x88 }, 444 { 0x3a02, 0x04 }, 445 { 0x3a03, 0x60 }, 446 { 0x3a08, 0x01 }, 447 { 0x3a09, 0x50 }, 448 { 0x3a0a, 0x01 }, 449 { 0x3a0b, 0x18 }, 450 { 0x3a0e, 0x03 }, 451 { 0x3a0d, 0x04 }, 452 { 0x3a14, 0x04 }, 453 { 0x3a15, 0x60 }, 454 { 0x3a18, 0x00 }, 455 { 0x4004, 0x06 }, 456 { 0x4005, 0x18 }, 457 { 0x4300, 0x32 }, 458 { 0x4202, 0x00 }, 459 { 0x4837, 0x0b } 460 }; 461 462 static const struct reg_value ov5645_setting_full[] = { 463 { 0x3612, 0xab }, 464 { 0x3614, 0x50 }, 465 { 0x3618, 0x04 }, 466 { 0x3034, 0x18 }, 467 { 0x3035, 0x11 }, 468 { 0x3036, 0x54 }, 469 { 0x3600, 0x08 }, 470 { 0x3601, 0x33 }, 471 { 0x3708, 0x63 }, 472 { 0x370c, 0xc0 }, 473 { 0x3800, 0x00 }, 474 { 0x3801, 0x00 }, 475 { 0x3802, 0x00 }, 476 { 0x3803, 0x00 }, 477 { 0x3804, 0x0a }, 478 { 0x3805, 0x3f }, 479 { 0x3806, 0x07 }, 480 { 0x3807, 0x9f }, 481 { 0x3808, 0x0a }, 482 { 0x3809, 0x20 }, 483 { 0x380a, 0x07 }, 484 { 0x380b, 0x98 }, 485 { 0x380c, 0x0b }, 486 { 0x380d, 0x1c }, 487 { 0x380e, 0x07 }, 488 { 0x380f, 0xb0 }, 489 { 0x3813, 0x06 }, 490 { 0x3814, 0x11 }, 491 { 0x3815, 0x11 }, 492 { 0x3820, 0x47 }, 493 { 0x4514, 0x88 }, 494 { 0x3a02, 0x07 }, 495 { 0x3a03, 0xb0 }, 496 { 0x3a08, 0x01 }, 497 { 0x3a09, 0x27 }, 498 { 0x3a0a, 0x00 }, 499 { 0x3a0b, 0xf6 }, 500 { 0x3a0e, 0x06 }, 501 { 0x3a0d, 0x08 }, 502 { 0x3a14, 0x07 }, 503 { 0x3a15, 0xb0 }, 504 { 0x3a18, 0x01 }, 505 { 0x4004, 0x06 }, 506 { 0x4005, 0x18 }, 507 { 0x4300, 0x32 }, 508 { 0x4837, 0x0b }, 509 { 0x4202, 0x00 } 510 }; 511 512 static const s64 link_freq[] = { 513 222880000, 514 334320000 515 }; 516 517 static const struct ov5645_mode_info ov5645_mode_info_data[] = { 518 { 519 .width = 1280, 520 .height = 960, 521 .data = ov5645_setting_sxga, 522 .data_size = ARRAY_SIZE(ov5645_setting_sxga), 523 .pixel_clock = 111440000, 524 .link_freq = 0 /* an index in link_freq[] */ 525 }, 526 { 527 .width = 1920, 528 .height = 1080, 529 .data = ov5645_setting_1080p, 530 .data_size = ARRAY_SIZE(ov5645_setting_1080p), 531 .pixel_clock = 167160000, 532 .link_freq = 1 /* an index in link_freq[] */ 533 }, 534 { 535 .width = 2592, 536 .height = 1944, 537 .data = ov5645_setting_full, 538 .data_size = ARRAY_SIZE(ov5645_setting_full), 539 .pixel_clock = 167160000, 540 .link_freq = 1 /* an index in link_freq[] */ 541 }, 542 }; 543 544 static int ov5645_regulators_enable(struct ov5645 *ov5645) 545 { 546 int ret; 547 548 ret = regulator_enable(ov5645->io_regulator); 549 if (ret < 0) { 550 dev_err(ov5645->dev, "set io voltage failed\n"); 551 return ret; 552 } 553 554 ret = regulator_enable(ov5645->analog_regulator); 555 if (ret) { 556 dev_err(ov5645->dev, "set analog voltage failed\n"); 557 goto err_disable_io; 558 } 559 560 ret = regulator_enable(ov5645->core_regulator); 561 if (ret) { 562 dev_err(ov5645->dev, "set core voltage failed\n"); 563 goto err_disable_analog; 564 } 565 566 return 0; 567 568 err_disable_analog: 569 regulator_disable(ov5645->analog_regulator); 570 err_disable_io: 571 regulator_disable(ov5645->io_regulator); 572 573 return ret; 574 } 575 576 static void ov5645_regulators_disable(struct ov5645 *ov5645) 577 { 578 int ret; 579 580 ret = regulator_disable(ov5645->core_regulator); 581 if (ret < 0) 582 dev_err(ov5645->dev, "core regulator disable failed\n"); 583 584 ret = regulator_disable(ov5645->analog_regulator); 585 if (ret < 0) 586 dev_err(ov5645->dev, "analog regulator disable failed\n"); 587 588 ret = regulator_disable(ov5645->io_regulator); 589 if (ret < 0) 590 dev_err(ov5645->dev, "io regulator disable failed\n"); 591 } 592 593 static int ov5645_write_reg(struct ov5645 *ov5645, u16 reg, u8 val) 594 { 595 u8 regbuf[3]; 596 int ret; 597 598 regbuf[0] = reg >> 8; 599 regbuf[1] = reg & 0xff; 600 regbuf[2] = val; 601 602 ret = i2c_master_send(ov5645->i2c_client, regbuf, 3); 603 if (ret < 0) 604 dev_err(ov5645->dev, "%s: write reg error %d: reg=%x, val=%x\n", 605 __func__, ret, reg, val); 606 607 return ret; 608 } 609 610 static int ov5645_read_reg(struct ov5645 *ov5645, u16 reg, u8 *val) 611 { 612 u8 regbuf[2]; 613 int ret; 614 615 regbuf[0] = reg >> 8; 616 regbuf[1] = reg & 0xff; 617 618 ret = i2c_master_send(ov5645->i2c_client, regbuf, 2); 619 if (ret < 0) { 620 dev_err(ov5645->dev, "%s: write reg error %d: reg=%x\n", 621 __func__, ret, reg); 622 return ret; 623 } 624 625 ret = i2c_master_recv(ov5645->i2c_client, val, 1); 626 if (ret < 0) { 627 dev_err(ov5645->dev, "%s: read reg error %d: reg=%x\n", 628 __func__, ret, reg); 629 return ret; 630 } 631 632 return 0; 633 } 634 635 static int ov5645_set_aec_mode(struct ov5645 *ov5645, u32 mode) 636 { 637 u8 val = ov5645->aec_pk_manual; 638 int ret; 639 640 if (mode == V4L2_EXPOSURE_AUTO) 641 val &= ~OV5645_AEC_MANUAL_ENABLE; 642 else /* V4L2_EXPOSURE_MANUAL */ 643 val |= OV5645_AEC_MANUAL_ENABLE; 644 645 ret = ov5645_write_reg(ov5645, OV5645_AEC_PK_MANUAL, val); 646 if (!ret) 647 ov5645->aec_pk_manual = val; 648 649 return ret; 650 } 651 652 static int ov5645_set_agc_mode(struct ov5645 *ov5645, u32 enable) 653 { 654 u8 val = ov5645->aec_pk_manual; 655 int ret; 656 657 if (enable) 658 val &= ~OV5645_AGC_MANUAL_ENABLE; 659 else 660 val |= OV5645_AGC_MANUAL_ENABLE; 661 662 ret = ov5645_write_reg(ov5645, OV5645_AEC_PK_MANUAL, val); 663 if (!ret) 664 ov5645->aec_pk_manual = val; 665 666 return ret; 667 } 668 669 static int ov5645_set_register_array(struct ov5645 *ov5645, 670 const struct reg_value *settings, 671 unsigned int num_settings) 672 { 673 unsigned int i; 674 int ret; 675 676 for (i = 0; i < num_settings; ++i, ++settings) { 677 ret = ov5645_write_reg(ov5645, settings->reg, settings->val); 678 if (ret < 0) 679 return ret; 680 } 681 682 return 0; 683 } 684 685 static int ov5645_set_power_on(struct ov5645 *ov5645) 686 { 687 int ret; 688 689 ret = ov5645_regulators_enable(ov5645); 690 if (ret < 0) { 691 return ret; 692 } 693 694 ret = clk_prepare_enable(ov5645->xclk); 695 if (ret < 0) { 696 dev_err(ov5645->dev, "clk prepare enable failed\n"); 697 ov5645_regulators_disable(ov5645); 698 return ret; 699 } 700 701 usleep_range(5000, 15000); 702 gpiod_set_value_cansleep(ov5645->enable_gpio, 1); 703 704 usleep_range(1000, 2000); 705 gpiod_set_value_cansleep(ov5645->rst_gpio, 0); 706 707 msleep(20); 708 709 return 0; 710 } 711 712 static void ov5645_set_power_off(struct ov5645 *ov5645) 713 { 714 gpiod_set_value_cansleep(ov5645->rst_gpio, 1); 715 gpiod_set_value_cansleep(ov5645->enable_gpio, 0); 716 clk_disable_unprepare(ov5645->xclk); 717 ov5645_regulators_disable(ov5645); 718 } 719 720 static int ov5645_s_power(struct v4l2_subdev *sd, int on) 721 { 722 struct ov5645 *ov5645 = to_ov5645(sd); 723 int ret = 0; 724 725 mutex_lock(&ov5645->power_lock); 726 727 /* If the power count is modified from 0 to != 0 or from != 0 to 0, 728 * update the power state. 729 */ 730 if (ov5645->power_count == !on) { 731 if (on) { 732 ret = ov5645_set_power_on(ov5645); 733 if (ret < 0) 734 goto exit; 735 736 ret = ov5645_set_register_array(ov5645, 737 ov5645_global_init_setting, 738 ARRAY_SIZE(ov5645_global_init_setting)); 739 if (ret < 0) { 740 dev_err(ov5645->dev, 741 "could not set init registers\n"); 742 ov5645_set_power_off(ov5645); 743 goto exit; 744 } 745 746 ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0, 747 OV5645_SYSTEM_CTRL0_STOP); 748 if (ret < 0) { 749 ov5645_set_power_off(ov5645); 750 goto exit; 751 } 752 } else { 753 ov5645_set_power_off(ov5645); 754 } 755 } 756 757 /* Update the power count. */ 758 ov5645->power_count += on ? 1 : -1; 759 WARN_ON(ov5645->power_count < 0); 760 761 exit: 762 mutex_unlock(&ov5645->power_lock); 763 764 return ret; 765 } 766 767 static int ov5645_set_saturation(struct ov5645 *ov5645, s32 value) 768 { 769 u32 reg_value = (value * 0x10) + 0x40; 770 int ret; 771 772 ret = ov5645_write_reg(ov5645, OV5645_SDE_SAT_U, reg_value); 773 if (ret < 0) 774 return ret; 775 776 return ov5645_write_reg(ov5645, OV5645_SDE_SAT_V, reg_value); 777 } 778 779 static int ov5645_set_hflip(struct ov5645 *ov5645, s32 value) 780 { 781 u8 val = ov5645->timing_tc_reg21; 782 int ret; 783 784 if (value == 0) 785 val &= ~(OV5645_SENSOR_MIRROR); 786 else 787 val |= (OV5645_SENSOR_MIRROR); 788 789 ret = ov5645_write_reg(ov5645, OV5645_TIMING_TC_REG21, val); 790 if (!ret) 791 ov5645->timing_tc_reg21 = val; 792 793 return ret; 794 } 795 796 static int ov5645_set_vflip(struct ov5645 *ov5645, s32 value) 797 { 798 u8 val = ov5645->timing_tc_reg20; 799 int ret; 800 801 if (value == 0) 802 val |= (OV5645_SENSOR_VFLIP | OV5645_ISP_VFLIP); 803 else 804 val &= ~(OV5645_SENSOR_VFLIP | OV5645_ISP_VFLIP); 805 806 ret = ov5645_write_reg(ov5645, OV5645_TIMING_TC_REG20, val); 807 if (!ret) 808 ov5645->timing_tc_reg20 = val; 809 810 return ret; 811 } 812 813 static int ov5645_set_test_pattern(struct ov5645 *ov5645, s32 value) 814 { 815 u8 val = 0; 816 817 if (value) { 818 val = OV5645_SET_TEST_PATTERN(value - 1); 819 val |= OV5645_TEST_PATTERN_ENABLE; 820 } 821 822 return ov5645_write_reg(ov5645, OV5645_PRE_ISP_TEST_SETTING_1, val); 823 } 824 825 static const char * const ov5645_test_pattern_menu[] = { 826 "Disabled", 827 "Vertical Color Bars", 828 "Pseudo-Random Data", 829 "Color Square", 830 "Black Image", 831 }; 832 833 static int ov5645_set_awb(struct ov5645 *ov5645, s32 enable_auto) 834 { 835 u8 val = 0; 836 837 if (!enable_auto) 838 val = OV5645_AWB_MANUAL_ENABLE; 839 840 return ov5645_write_reg(ov5645, OV5645_AWB_MANUAL_CONTROL, val); 841 } 842 843 static int ov5645_s_ctrl(struct v4l2_ctrl *ctrl) 844 { 845 struct ov5645 *ov5645 = container_of(ctrl->handler, 846 struct ov5645, ctrls); 847 int ret; 848 849 mutex_lock(&ov5645->power_lock); 850 if (!ov5645->power_count) { 851 mutex_unlock(&ov5645->power_lock); 852 return 0; 853 } 854 855 switch (ctrl->id) { 856 case V4L2_CID_SATURATION: 857 ret = ov5645_set_saturation(ov5645, ctrl->val); 858 break; 859 case V4L2_CID_AUTO_WHITE_BALANCE: 860 ret = ov5645_set_awb(ov5645, ctrl->val); 861 break; 862 case V4L2_CID_AUTOGAIN: 863 ret = ov5645_set_agc_mode(ov5645, ctrl->val); 864 break; 865 case V4L2_CID_EXPOSURE_AUTO: 866 ret = ov5645_set_aec_mode(ov5645, ctrl->val); 867 break; 868 case V4L2_CID_TEST_PATTERN: 869 ret = ov5645_set_test_pattern(ov5645, ctrl->val); 870 break; 871 case V4L2_CID_HFLIP: 872 ret = ov5645_set_hflip(ov5645, ctrl->val); 873 break; 874 case V4L2_CID_VFLIP: 875 ret = ov5645_set_vflip(ov5645, ctrl->val); 876 break; 877 default: 878 ret = -EINVAL; 879 break; 880 } 881 882 mutex_unlock(&ov5645->power_lock); 883 884 return ret; 885 } 886 887 static struct v4l2_ctrl_ops ov5645_ctrl_ops = { 888 .s_ctrl = ov5645_s_ctrl, 889 }; 890 891 static int ov5645_enum_mbus_code(struct v4l2_subdev *sd, 892 struct v4l2_subdev_pad_config *cfg, 893 struct v4l2_subdev_mbus_code_enum *code) 894 { 895 if (code->index > 0) 896 return -EINVAL; 897 898 code->code = MEDIA_BUS_FMT_UYVY8_2X8; 899 900 return 0; 901 } 902 903 static int ov5645_enum_frame_size(struct v4l2_subdev *subdev, 904 struct v4l2_subdev_pad_config *cfg, 905 struct v4l2_subdev_frame_size_enum *fse) 906 { 907 if (fse->code != MEDIA_BUS_FMT_UYVY8_2X8) 908 return -EINVAL; 909 910 if (fse->index >= ARRAY_SIZE(ov5645_mode_info_data)) 911 return -EINVAL; 912 913 fse->min_width = ov5645_mode_info_data[fse->index].width; 914 fse->max_width = ov5645_mode_info_data[fse->index].width; 915 fse->min_height = ov5645_mode_info_data[fse->index].height; 916 fse->max_height = ov5645_mode_info_data[fse->index].height; 917 918 return 0; 919 } 920 921 static struct v4l2_mbus_framefmt * 922 __ov5645_get_pad_format(struct ov5645 *ov5645, 923 struct v4l2_subdev_pad_config *cfg, 924 unsigned int pad, 925 enum v4l2_subdev_format_whence which) 926 { 927 switch (which) { 928 case V4L2_SUBDEV_FORMAT_TRY: 929 return v4l2_subdev_get_try_format(&ov5645->sd, cfg, pad); 930 case V4L2_SUBDEV_FORMAT_ACTIVE: 931 return &ov5645->fmt; 932 default: 933 return NULL; 934 } 935 } 936 937 static int ov5645_get_format(struct v4l2_subdev *sd, 938 struct v4l2_subdev_pad_config *cfg, 939 struct v4l2_subdev_format *format) 940 { 941 struct ov5645 *ov5645 = to_ov5645(sd); 942 943 format->format = *__ov5645_get_pad_format(ov5645, cfg, format->pad, 944 format->which); 945 return 0; 946 } 947 948 static struct v4l2_rect * 949 __ov5645_get_pad_crop(struct ov5645 *ov5645, struct v4l2_subdev_pad_config *cfg, 950 unsigned int pad, enum v4l2_subdev_format_whence which) 951 { 952 switch (which) { 953 case V4L2_SUBDEV_FORMAT_TRY: 954 return v4l2_subdev_get_try_crop(&ov5645->sd, cfg, pad); 955 case V4L2_SUBDEV_FORMAT_ACTIVE: 956 return &ov5645->crop; 957 default: 958 return NULL; 959 } 960 } 961 962 static const struct ov5645_mode_info * 963 ov5645_find_nearest_mode(unsigned int width, unsigned int height) 964 { 965 int i; 966 967 for (i = ARRAY_SIZE(ov5645_mode_info_data) - 1; i >= 0; i--) { 968 if (ov5645_mode_info_data[i].width <= width && 969 ov5645_mode_info_data[i].height <= height) 970 break; 971 } 972 973 if (i < 0) 974 i = 0; 975 976 return &ov5645_mode_info_data[i]; 977 } 978 979 static int ov5645_set_format(struct v4l2_subdev *sd, 980 struct v4l2_subdev_pad_config *cfg, 981 struct v4l2_subdev_format *format) 982 { 983 struct ov5645 *ov5645 = to_ov5645(sd); 984 struct v4l2_mbus_framefmt *__format; 985 struct v4l2_rect *__crop; 986 const struct ov5645_mode_info *new_mode; 987 int ret; 988 989 __crop = __ov5645_get_pad_crop(ov5645, cfg, format->pad, 990 format->which); 991 992 new_mode = ov5645_find_nearest_mode(format->format.width, 993 format->format.height); 994 __crop->width = new_mode->width; 995 __crop->height = new_mode->height; 996 997 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) { 998 ret = v4l2_ctrl_s_ctrl_int64(ov5645->pixel_clock, 999 new_mode->pixel_clock); 1000 if (ret < 0) 1001 return ret; 1002 1003 ret = v4l2_ctrl_s_ctrl(ov5645->link_freq, 1004 new_mode->link_freq); 1005 if (ret < 0) 1006 return ret; 1007 1008 ov5645->current_mode = new_mode; 1009 } 1010 1011 __format = __ov5645_get_pad_format(ov5645, cfg, format->pad, 1012 format->which); 1013 __format->width = __crop->width; 1014 __format->height = __crop->height; 1015 __format->code = MEDIA_BUS_FMT_UYVY8_2X8; 1016 __format->field = V4L2_FIELD_NONE; 1017 __format->colorspace = V4L2_COLORSPACE_SRGB; 1018 1019 format->format = *__format; 1020 1021 return 0; 1022 } 1023 1024 static int ov5645_entity_init_cfg(struct v4l2_subdev *subdev, 1025 struct v4l2_subdev_pad_config *cfg) 1026 { 1027 struct v4l2_subdev_format fmt = { 0 }; 1028 1029 fmt.which = cfg ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; 1030 fmt.format.width = 1920; 1031 fmt.format.height = 1080; 1032 1033 ov5645_set_format(subdev, cfg, &fmt); 1034 1035 return 0; 1036 } 1037 1038 static int ov5645_get_selection(struct v4l2_subdev *sd, 1039 struct v4l2_subdev_pad_config *cfg, 1040 struct v4l2_subdev_selection *sel) 1041 { 1042 struct ov5645 *ov5645 = to_ov5645(sd); 1043 1044 if (sel->target != V4L2_SEL_TGT_CROP) 1045 return -EINVAL; 1046 1047 sel->r = *__ov5645_get_pad_crop(ov5645, cfg, sel->pad, 1048 sel->which); 1049 return 0; 1050 } 1051 1052 static int ov5645_s_stream(struct v4l2_subdev *subdev, int enable) 1053 { 1054 struct ov5645 *ov5645 = to_ov5645(subdev); 1055 int ret; 1056 1057 if (enable) { 1058 ret = ov5645_set_register_array(ov5645, 1059 ov5645->current_mode->data, 1060 ov5645->current_mode->data_size); 1061 if (ret < 0) { 1062 dev_err(ov5645->dev, "could not set mode %dx%d\n", 1063 ov5645->current_mode->width, 1064 ov5645->current_mode->height); 1065 return ret; 1066 } 1067 ret = v4l2_ctrl_handler_setup(&ov5645->ctrls); 1068 if (ret < 0) { 1069 dev_err(ov5645->dev, "could not sync v4l2 controls\n"); 1070 return ret; 1071 } 1072 ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0, 1073 OV5645_SYSTEM_CTRL0_START); 1074 if (ret < 0) 1075 return ret; 1076 } else { 1077 ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0, 1078 OV5645_SYSTEM_CTRL0_STOP); 1079 if (ret < 0) 1080 return ret; 1081 } 1082 1083 return 0; 1084 } 1085 1086 static const struct v4l2_subdev_core_ops ov5645_core_ops = { 1087 .s_power = ov5645_s_power, 1088 }; 1089 1090 static const struct v4l2_subdev_video_ops ov5645_video_ops = { 1091 .s_stream = ov5645_s_stream, 1092 }; 1093 1094 static const struct v4l2_subdev_pad_ops ov5645_subdev_pad_ops = { 1095 .init_cfg = ov5645_entity_init_cfg, 1096 .enum_mbus_code = ov5645_enum_mbus_code, 1097 .enum_frame_size = ov5645_enum_frame_size, 1098 .get_fmt = ov5645_get_format, 1099 .set_fmt = ov5645_set_format, 1100 .get_selection = ov5645_get_selection, 1101 }; 1102 1103 static const struct v4l2_subdev_ops ov5645_subdev_ops = { 1104 .core = &ov5645_core_ops, 1105 .video = &ov5645_video_ops, 1106 .pad = &ov5645_subdev_pad_ops, 1107 }; 1108 1109 static int ov5645_probe(struct i2c_client *client, 1110 const struct i2c_device_id *id) 1111 { 1112 struct device *dev = &client->dev; 1113 struct device_node *endpoint; 1114 struct ov5645 *ov5645; 1115 u8 chip_id_high, chip_id_low; 1116 u32 xclk_freq; 1117 int ret; 1118 1119 ov5645 = devm_kzalloc(dev, sizeof(struct ov5645), GFP_KERNEL); 1120 if (!ov5645) 1121 return -ENOMEM; 1122 1123 ov5645->i2c_client = client; 1124 ov5645->dev = dev; 1125 1126 endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); 1127 if (!endpoint) { 1128 dev_err(dev, "endpoint node not found\n"); 1129 return -EINVAL; 1130 } 1131 1132 ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint), 1133 &ov5645->ep); 1134 if (ret < 0) { 1135 dev_err(dev, "parsing endpoint node failed\n"); 1136 return ret; 1137 } 1138 1139 of_node_put(endpoint); 1140 1141 if (ov5645->ep.bus_type != V4L2_MBUS_CSI2) { 1142 dev_err(dev, "invalid bus type, must be CSI2\n"); 1143 return -EINVAL; 1144 } 1145 1146 /* get system clock (xclk) */ 1147 ov5645->xclk = devm_clk_get(dev, "xclk"); 1148 if (IS_ERR(ov5645->xclk)) { 1149 dev_err(dev, "could not get xclk"); 1150 return PTR_ERR(ov5645->xclk); 1151 } 1152 1153 ret = of_property_read_u32(dev->of_node, "clock-frequency", &xclk_freq); 1154 if (ret) { 1155 dev_err(dev, "could not get xclk frequency\n"); 1156 return ret; 1157 } 1158 1159 if (xclk_freq != 23880000) { 1160 dev_err(dev, "external clock frequency %u is not supported\n", 1161 xclk_freq); 1162 return -EINVAL; 1163 } 1164 1165 ret = clk_set_rate(ov5645->xclk, xclk_freq); 1166 if (ret) { 1167 dev_err(dev, "could not set xclk frequency\n"); 1168 return ret; 1169 } 1170 1171 ov5645->io_regulator = devm_regulator_get(dev, "vdddo"); 1172 if (IS_ERR(ov5645->io_regulator)) { 1173 dev_err(dev, "cannot get io regulator\n"); 1174 return PTR_ERR(ov5645->io_regulator); 1175 } 1176 1177 ret = regulator_set_voltage(ov5645->io_regulator, 1178 OV5645_VOLTAGE_DIGITAL_IO, 1179 OV5645_VOLTAGE_DIGITAL_IO); 1180 if (ret < 0) { 1181 dev_err(dev, "cannot set io voltage\n"); 1182 return ret; 1183 } 1184 1185 ov5645->core_regulator = devm_regulator_get(dev, "vddd"); 1186 if (IS_ERR(ov5645->core_regulator)) { 1187 dev_err(dev, "cannot get core regulator\n"); 1188 return PTR_ERR(ov5645->core_regulator); 1189 } 1190 1191 ret = regulator_set_voltage(ov5645->core_regulator, 1192 OV5645_VOLTAGE_DIGITAL_CORE, 1193 OV5645_VOLTAGE_DIGITAL_CORE); 1194 if (ret < 0) { 1195 dev_err(dev, "cannot set core voltage\n"); 1196 return ret; 1197 } 1198 1199 ov5645->analog_regulator = devm_regulator_get(dev, "vdda"); 1200 if (IS_ERR(ov5645->analog_regulator)) { 1201 dev_err(dev, "cannot get analog regulator\n"); 1202 return PTR_ERR(ov5645->analog_regulator); 1203 } 1204 1205 ret = regulator_set_voltage(ov5645->analog_regulator, 1206 OV5645_VOLTAGE_ANALOG, 1207 OV5645_VOLTAGE_ANALOG); 1208 if (ret < 0) { 1209 dev_err(dev, "cannot set analog voltage\n"); 1210 return ret; 1211 } 1212 1213 ov5645->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_HIGH); 1214 if (IS_ERR(ov5645->enable_gpio)) { 1215 dev_err(dev, "cannot get enable gpio\n"); 1216 return PTR_ERR(ov5645->enable_gpio); 1217 } 1218 1219 ov5645->rst_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); 1220 if (IS_ERR(ov5645->rst_gpio)) { 1221 dev_err(dev, "cannot get reset gpio\n"); 1222 return PTR_ERR(ov5645->rst_gpio); 1223 } 1224 1225 mutex_init(&ov5645->power_lock); 1226 1227 v4l2_ctrl_handler_init(&ov5645->ctrls, 9); 1228 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops, 1229 V4L2_CID_SATURATION, -4, 4, 1, 0); 1230 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops, 1231 V4L2_CID_HFLIP, 0, 1, 1, 0); 1232 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops, 1233 V4L2_CID_VFLIP, 0, 1, 1, 0); 1234 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops, 1235 V4L2_CID_AUTOGAIN, 0, 1, 1, 1); 1236 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops, 1237 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1); 1238 v4l2_ctrl_new_std_menu(&ov5645->ctrls, &ov5645_ctrl_ops, 1239 V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL, 1240 0, V4L2_EXPOSURE_AUTO); 1241 v4l2_ctrl_new_std_menu_items(&ov5645->ctrls, &ov5645_ctrl_ops, 1242 V4L2_CID_TEST_PATTERN, 1243 ARRAY_SIZE(ov5645_test_pattern_menu) - 1, 1244 0, 0, ov5645_test_pattern_menu); 1245 ov5645->pixel_clock = v4l2_ctrl_new_std(&ov5645->ctrls, 1246 &ov5645_ctrl_ops, 1247 V4L2_CID_PIXEL_RATE, 1248 1, INT_MAX, 1, 1); 1249 ov5645->link_freq = v4l2_ctrl_new_int_menu(&ov5645->ctrls, 1250 &ov5645_ctrl_ops, 1251 V4L2_CID_LINK_FREQ, 1252 ARRAY_SIZE(link_freq) - 1, 1253 0, link_freq); 1254 if (ov5645->link_freq) 1255 ov5645->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1256 1257 ov5645->sd.ctrl_handler = &ov5645->ctrls; 1258 1259 if (ov5645->ctrls.error) { 1260 dev_err(dev, "%s: control initialization error %d\n", 1261 __func__, ov5645->ctrls.error); 1262 ret = ov5645->ctrls.error; 1263 goto free_ctrl; 1264 } 1265 1266 v4l2_i2c_subdev_init(&ov5645->sd, client, &ov5645_subdev_ops); 1267 ov5645->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1268 ov5645->pad.flags = MEDIA_PAD_FL_SOURCE; 1269 ov5645->sd.dev = &client->dev; 1270 ov5645->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 1271 1272 ret = media_entity_pads_init(&ov5645->sd.entity, 1, &ov5645->pad); 1273 if (ret < 0) { 1274 dev_err(dev, "could not register media entity\n"); 1275 goto free_ctrl; 1276 } 1277 1278 ret = ov5645_s_power(&ov5645->sd, true); 1279 if (ret < 0) { 1280 dev_err(dev, "could not power up OV5645\n"); 1281 goto free_entity; 1282 } 1283 1284 ret = ov5645_read_reg(ov5645, OV5645_CHIP_ID_HIGH, &chip_id_high); 1285 if (ret < 0 || chip_id_high != OV5645_CHIP_ID_HIGH_BYTE) { 1286 dev_err(dev, "could not read ID high\n"); 1287 ret = -ENODEV; 1288 goto power_down; 1289 } 1290 ret = ov5645_read_reg(ov5645, OV5645_CHIP_ID_LOW, &chip_id_low); 1291 if (ret < 0 || chip_id_low != OV5645_CHIP_ID_LOW_BYTE) { 1292 dev_err(dev, "could not read ID low\n"); 1293 ret = -ENODEV; 1294 goto power_down; 1295 } 1296 1297 dev_info(dev, "OV5645 detected at address 0x%02x\n", client->addr); 1298 1299 ret = ov5645_read_reg(ov5645, OV5645_AEC_PK_MANUAL, 1300 &ov5645->aec_pk_manual); 1301 if (ret < 0) { 1302 dev_err(dev, "could not read AEC/AGC mode\n"); 1303 ret = -ENODEV; 1304 goto power_down; 1305 } 1306 1307 ret = ov5645_read_reg(ov5645, OV5645_TIMING_TC_REG20, 1308 &ov5645->timing_tc_reg20); 1309 if (ret < 0) { 1310 dev_err(dev, "could not read vflip value\n"); 1311 ret = -ENODEV; 1312 goto power_down; 1313 } 1314 1315 ret = ov5645_read_reg(ov5645, OV5645_TIMING_TC_REG21, 1316 &ov5645->timing_tc_reg21); 1317 if (ret < 0) { 1318 dev_err(dev, "could not read hflip value\n"); 1319 ret = -ENODEV; 1320 goto power_down; 1321 } 1322 1323 ov5645_s_power(&ov5645->sd, false); 1324 1325 ret = v4l2_async_register_subdev(&ov5645->sd); 1326 if (ret < 0) { 1327 dev_err(dev, "could not register v4l2 device\n"); 1328 goto free_entity; 1329 } 1330 1331 ov5645_entity_init_cfg(&ov5645->sd, NULL); 1332 1333 return 0; 1334 1335 power_down: 1336 ov5645_s_power(&ov5645->sd, false); 1337 free_entity: 1338 media_entity_cleanup(&ov5645->sd.entity); 1339 free_ctrl: 1340 v4l2_ctrl_handler_free(&ov5645->ctrls); 1341 mutex_destroy(&ov5645->power_lock); 1342 1343 return ret; 1344 } 1345 1346 static int ov5645_remove(struct i2c_client *client) 1347 { 1348 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1349 struct ov5645 *ov5645 = to_ov5645(sd); 1350 1351 v4l2_async_unregister_subdev(&ov5645->sd); 1352 media_entity_cleanup(&ov5645->sd.entity); 1353 v4l2_ctrl_handler_free(&ov5645->ctrls); 1354 mutex_destroy(&ov5645->power_lock); 1355 1356 return 0; 1357 } 1358 1359 static const struct i2c_device_id ov5645_id[] = { 1360 { "ov5645", 0 }, 1361 {} 1362 }; 1363 MODULE_DEVICE_TABLE(i2c, ov5645_id); 1364 1365 static const struct of_device_id ov5645_of_match[] = { 1366 { .compatible = "ovti,ov5645" }, 1367 { /* sentinel */ } 1368 }; 1369 MODULE_DEVICE_TABLE(of, ov5645_of_match); 1370 1371 static struct i2c_driver ov5645_i2c_driver = { 1372 .driver = { 1373 .of_match_table = of_match_ptr(ov5645_of_match), 1374 .name = "ov5645", 1375 }, 1376 .probe = ov5645_probe, 1377 .remove = ov5645_remove, 1378 .id_table = ov5645_id, 1379 }; 1380 1381 module_i2c_driver(ov5645_i2c_driver); 1382 1383 MODULE_DESCRIPTION("Omnivision OV5645 Camera Driver"); 1384 MODULE_AUTHOR("Todor Tomov <todor.tomov@linaro.org>"); 1385 MODULE_LICENSE("GPL v2"); 1386