| 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * A V4L2 driver for OmniVision OV5647 cameras. |
| 4 | * |
| 5 | * Based on Samsung S5K6AAFX SXGA 1/6" 1.3M CMOS Image Sensor driver |
| 6 | * Copyright (C) 2011 Sylwester Nawrocki <s.nawrocki@samsung.com> |
| 7 | * |
| 8 | * Based on Omnivision OV7670 Camera Driver |
| 9 | * Copyright (C) 2006-7 Jonathan Corbet <corbet@lwn.net> |
| 10 | * |
| 11 | * Copyright (C) 2016, Synopsys, Inc. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/clk.h> |
| 15 | #include <linux/delay.h> |
| 16 | #include <linux/gpio/consumer.h> |
| 17 | #include <linux/i2c.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/io.h> |
| 20 | #include <linux/module.h> |
| 21 | #include <linux/of_graph.h> |
| 22 | #include <linux/pm_runtime.h> |
| 23 | #include <linux/slab.h> |
| 24 | #include <linux/videodev2.h> |
| 25 | #include <media/v4l2-ctrls.h> |
| 26 | #include <media/v4l2-device.h> |
| 27 | #include <media/v4l2-event.h> |
| 28 | #include <media/v4l2-fwnode.h> |
| 29 | #include <media/v4l2-image-sizes.h> |
| 30 | #include <media/v4l2-mediabus.h> |
| 31 | |
| 32 | /* |
| 33 | * From the datasheet, "20ms after PWDN goes low or 20ms after RESETB goes |
| 34 | * high if reset is inserted after PWDN goes high, host can access sensor's |
| 35 | * SCCB to initialize sensor." |
| 36 | */ |
| 37 | #define PWDN_ACTIVE_DELAY_MS 20 |
| 38 | |
| 39 | #define MIPI_CTRL00_CLOCK_LANE_GATE BIT(5) |
| 40 | #define MIPI_CTRL00_LINE_SYNC_ENABLE BIT(4) |
| 41 | #define MIPI_CTRL00_BUS_IDLE BIT(2) |
| 42 | #define MIPI_CTRL00_CLOCK_LANE_DISABLE BIT(0) |
| 43 | |
| 44 | #define OV5647_SW_STANDBY 0x0100 |
| 45 | #define OV5647_SW_RESET 0x0103 |
| 46 | #define OV5647_REG_CHIPID_H 0x300a |
| 47 | #define OV5647_REG_CHIPID_L 0x300b |
| 48 | #define OV5640_REG_PAD_OUT 0x300d |
| 49 | #define OV5647_REG_EXP_HI 0x3500 |
| 50 | #define OV5647_REG_EXP_MID 0x3501 |
| 51 | #define OV5647_REG_EXP_LO 0x3502 |
| 52 | #define OV5647_REG_AEC_AGC 0x3503 |
| 53 | #define OV5647_REG_GAIN_HI 0x350a |
| 54 | #define OV5647_REG_GAIN_LO 0x350b |
| 55 | #define OV5647_REG_VTS_HI 0x380e |
| 56 | #define OV5647_REG_VTS_LO 0x380f |
| 57 | #define OV5647_REG_FRAME_OFF_NUMBER 0x4202 |
| 58 | #define OV5647_REG_MIPI_CTRL00 0x4800 |
| 59 | #define OV5647_REG_MIPI_CTRL14 0x4814 |
| 60 | #define OV5647_REG_AWB 0x5001 |
| 61 | #define OV5647_REG_ISPCTRL3D 0x503d |
| 62 | |
| 63 | #define REG_TERM 0xfffe |
| 64 | #define VAL_TERM 0xfe |
| 65 | #define REG_DLY 0xffff |
| 66 | |
| 67 | /* OV5647 native and active pixel array size */ |
| 68 | #define OV5647_NATIVE_WIDTH 2624U |
| 69 | #define OV5647_NATIVE_HEIGHT 1956U |
| 70 | |
| 71 | #define OV5647_PIXEL_ARRAY_LEFT 16U |
| 72 | #define OV5647_PIXEL_ARRAY_TOP 16U |
| 73 | #define OV5647_PIXEL_ARRAY_WIDTH 2592U |
| 74 | #define OV5647_PIXEL_ARRAY_HEIGHT 1944U |
| 75 | |
| 76 | #define OV5647_VBLANK_MIN 4 |
| 77 | #define OV5647_VTS_MAX 32767 |
| 78 | |
| 79 | #define OV5647_EXPOSURE_MIN 4 |
| 80 | #define OV5647_EXPOSURE_STEP 1 |
| 81 | #define OV5647_EXPOSURE_DEFAULT 1000 |
| 82 | #define OV5647_EXPOSURE_MAX 65535 |
| 83 | |
| 84 | struct regval_list { |
| 85 | u16 addr; |
| 86 | u8 data; |
| 87 | }; |
| 88 | |
| 89 | struct ov5647_mode { |
| 90 | struct v4l2_mbus_framefmt format; |
| 91 | struct v4l2_rect crop; |
| 92 | u64 pixel_rate; |
| 93 | int hts; |
| 94 | int vts; |
| 95 | const struct regval_list *reg_list; |
| 96 | unsigned int num_regs; |
| 97 | }; |
| 98 | |
| 99 | struct ov5647 { |
| 100 | struct v4l2_subdev sd; |
| 101 | struct media_pad pad; |
| 102 | struct mutex lock; |
| 103 | struct clk *xclk; |
| 104 | struct gpio_desc *pwdn; |
| 105 | bool clock_ncont; |
| 106 | struct v4l2_ctrl_handler ctrls; |
| 107 | const struct ov5647_mode *mode; |
| 108 | struct v4l2_ctrl *pixel_rate; |
| 109 | struct v4l2_ctrl *hblank; |
| 110 | struct v4l2_ctrl *vblank; |
| 111 | struct v4l2_ctrl *exposure; |
| 112 | }; |
| 113 | |
| 114 | static inline struct ov5647 *to_sensor(struct v4l2_subdev *sd) |
| 115 | { |
| 116 | return container_of(sd, struct ov5647, sd); |
| 117 | } |
| 118 | |
| 119 | static const char * const ov5647_test_pattern_menu[] = { |
| 120 | "Disabled", |
| 121 | "Color Bars", |
| 122 | "Color Squares", |
| 123 | "Random Data", |
| 124 | }; |
| 125 | |
| 126 | static const u8 ov5647_test_pattern_val[] = { |
| 127 | 0x00, /* Disabled */ |
| 128 | 0x80, /* Color Bars */ |
| 129 | 0x82, /* Color Squares */ |
| 130 | 0x81, /* Random Data */ |
| 131 | }; |
| 132 | |
| 133 | static const struct regval_list sensor_oe_disable_regs[] = { |
| 134 | {0x3000, 0x00}, |
| 135 | {0x3001, 0x00}, |
| 136 | {0x3002, 0x00}, |
| 137 | }; |
| 138 | |
| 139 | static const struct regval_list sensor_oe_enable_regs[] = { |
| 140 | {0x3000, 0x0f}, |
| 141 | {0x3001, 0xff}, |
| 142 | {0x3002, 0xe4}, |
| 143 | }; |
| 144 | |
| 145 | static struct regval_list ov5647_2592x1944_10bpp[] = { |
| 146 | {0x0100, 0x00}, |
| 147 | {0x0103, 0x01}, |
| 148 | {0x3034, 0x1a}, |
| 149 | {0x3035, 0x21}, |
| 150 | {0x3036, 0x69}, |
| 151 | {0x303c, 0x11}, |
| 152 | {0x3106, 0xf5}, |
| 153 | {0x3821, 0x06}, |
| 154 | {0x3820, 0x00}, |
| 155 | {0x3827, 0xec}, |
| 156 | {0x370c, 0x03}, |
| 157 | {0x3612, 0x5b}, |
| 158 | {0x3618, 0x04}, |
| 159 | {0x5000, 0x06}, |
| 160 | {0x5002, 0x41}, |
| 161 | {0x5003, 0x08}, |
| 162 | {0x5a00, 0x08}, |
| 163 | {0x3000, 0x00}, |
| 164 | {0x3001, 0x00}, |
| 165 | {0x3002, 0x00}, |
| 166 | {0x3016, 0x08}, |
| 167 | {0x3017, 0xe0}, |
| 168 | {0x3018, 0x44}, |
| 169 | {0x301c, 0xf8}, |
| 170 | {0x301d, 0xf0}, |
| 171 | {0x3a18, 0x00}, |
| 172 | {0x3a19, 0xf8}, |
| 173 | {0x3c01, 0x80}, |
| 174 | {0x3b07, 0x0c}, |
| 175 | {0x380c, 0x0b}, |
| 176 | {0x380d, 0x1c}, |
| 177 | {0x3814, 0x11}, |
| 178 | {0x3815, 0x11}, |
| 179 | {0x3708, 0x64}, |
| 180 | {0x3709, 0x12}, |
| 181 | {0x3808, 0x0a}, |
| 182 | {0x3809, 0x20}, |
| 183 | {0x380a, 0x07}, |
| 184 | {0x380b, 0x98}, |
| 185 | {0x3800, 0x00}, |
| 186 | {0x3801, 0x00}, |
| 187 | {0x3802, 0x00}, |
| 188 | {0x3803, 0x00}, |
| 189 | {0x3804, 0x0a}, |
| 190 | {0x3805, 0x3f}, |
| 191 | {0x3806, 0x07}, |
| 192 | {0x3807, 0xa3}, |
| 193 | {0x3811, 0x10}, |
| 194 | {0x3813, 0x06}, |
| 195 | {0x3630, 0x2e}, |
| 196 | {0x3632, 0xe2}, |
| 197 | {0x3633, 0x23}, |
| 198 | {0x3634, 0x44}, |
| 199 | {0x3636, 0x06}, |
| 200 | {0x3620, 0x64}, |
| 201 | {0x3621, 0xe0}, |
| 202 | {0x3600, 0x37}, |
| 203 | {0x3704, 0xa0}, |
| 204 | {0x3703, 0x5a}, |
| 205 | {0x3715, 0x78}, |
| 206 | {0x3717, 0x01}, |
| 207 | {0x3731, 0x02}, |
| 208 | {0x370b, 0x60}, |
| 209 | {0x3705, 0x1a}, |
| 210 | {0x3f05, 0x02}, |
| 211 | {0x3f06, 0x10}, |
| 212 | {0x3f01, 0x0a}, |
| 213 | {0x3a08, 0x01}, |
| 214 | {0x3a09, 0x28}, |
| 215 | {0x3a0a, 0x00}, |
| 216 | {0x3a0b, 0xf6}, |
| 217 | {0x3a0d, 0x08}, |
| 218 | {0x3a0e, 0x06}, |
| 219 | {0x3a0f, 0x58}, |
| 220 | {0x3a10, 0x50}, |
| 221 | {0x3a1b, 0x58}, |
| 222 | {0x3a1e, 0x50}, |
| 223 | {0x3a11, 0x60}, |
| 224 | {0x3a1f, 0x28}, |
| 225 | {0x4001, 0x02}, |
| 226 | {0x4004, 0x04}, |
| 227 | {0x4000, 0x09}, |
| 228 | {0x4837, 0x19}, |
| 229 | {0x4800, 0x24}, |
| 230 | {0x3503, 0x03}, |
| 231 | {0x0100, 0x01}, |
| 232 | }; |
| 233 | |
| 234 | static struct regval_list ov5647_1080p30_10bpp[] = { |
| 235 | {0x0100, 0x00}, |
| 236 | {0x0103, 0x01}, |
| 237 | {0x3034, 0x1a}, |
| 238 | {0x3035, 0x21}, |
| 239 | {0x3036, 0x62}, |
| 240 | {0x303c, 0x11}, |
| 241 | {0x3106, 0xf5}, |
| 242 | {0x3821, 0x06}, |
| 243 | {0x3820, 0x00}, |
| 244 | {0x3827, 0xec}, |
| 245 | {0x370c, 0x03}, |
| 246 | {0x3612, 0x5b}, |
| 247 | {0x3618, 0x04}, |
| 248 | {0x5000, 0x06}, |
| 249 | {0x5002, 0x41}, |
| 250 | {0x5003, 0x08}, |
| 251 | {0x5a00, 0x08}, |
| 252 | {0x3000, 0x00}, |
| 253 | {0x3001, 0x00}, |
| 254 | {0x3002, 0x00}, |
| 255 | {0x3016, 0x08}, |
| 256 | {0x3017, 0xe0}, |
| 257 | {0x3018, 0x44}, |
| 258 | {0x301c, 0xf8}, |
| 259 | {0x301d, 0xf0}, |
| 260 | {0x3a18, 0x00}, |
| 261 | {0x3a19, 0xf8}, |
| 262 | {0x3c01, 0x80}, |
| 263 | {0x3b07, 0x0c}, |
| 264 | {0x380c, 0x09}, |
| 265 | {0x380d, 0x70}, |
| 266 | {0x3814, 0x11}, |
| 267 | {0x3815, 0x11}, |
| 268 | {0x3708, 0x64}, |
| 269 | {0x3709, 0x12}, |
| 270 | {0x3808, 0x07}, |
| 271 | {0x3809, 0x80}, |
| 272 | {0x380a, 0x04}, |
| 273 | {0x380b, 0x38}, |
| 274 | {0x3800, 0x01}, |
| 275 | {0x3801, 0x5c}, |
| 276 | {0x3802, 0x01}, |
| 277 | {0x3803, 0xb2}, |
| 278 | {0x3804, 0x08}, |
| 279 | {0x3805, 0xe3}, |
| 280 | {0x3806, 0x05}, |
| 281 | {0x3807, 0xf1}, |
| 282 | {0x3811, 0x04}, |
| 283 | {0x3813, 0x02}, |
| 284 | {0x3630, 0x2e}, |
| 285 | {0x3632, 0xe2}, |
| 286 | {0x3633, 0x23}, |
| 287 | {0x3634, 0x44}, |
| 288 | {0x3636, 0x06}, |
| 289 | {0x3620, 0x64}, |
| 290 | {0x3621, 0xe0}, |
| 291 | {0x3600, 0x37}, |
| 292 | {0x3704, 0xa0}, |
| 293 | {0x3703, 0x5a}, |
| 294 | {0x3715, 0x78}, |
| 295 | {0x3717, 0x01}, |
| 296 | {0x3731, 0x02}, |
| 297 | {0x370b, 0x60}, |
| 298 | {0x3705, 0x1a}, |
| 299 | {0x3f05, 0x02}, |
| 300 | {0x3f06, 0x10}, |
| 301 | {0x3f01, 0x0a}, |
| 302 | {0x3a08, 0x01}, |
| 303 | {0x3a09, 0x4b}, |
| 304 | {0x3a0a, 0x01}, |
| 305 | {0x3a0b, 0x13}, |
| 306 | {0x3a0d, 0x04}, |
| 307 | {0x3a0e, 0x03}, |
| 308 | {0x3a0f, 0x58}, |
| 309 | {0x3a10, 0x50}, |
| 310 | {0x3a1b, 0x58}, |
| 311 | {0x3a1e, 0x50}, |
| 312 | {0x3a11, 0x60}, |
| 313 | {0x3a1f, 0x28}, |
| 314 | {0x4001, 0x02}, |
| 315 | {0x4004, 0x04}, |
| 316 | {0x4000, 0x09}, |
| 317 | {0x4837, 0x19}, |
| 318 | {0x4800, 0x34}, |
| 319 | {0x3503, 0x03}, |
| 320 | {0x0100, 0x01}, |
| 321 | }; |
| 322 | |
| 323 | static struct regval_list ov5647_2x2binned_10bpp[] = { |
| 324 | {0x0100, 0x00}, |
| 325 | {0x0103, 0x01}, |
| 326 | {0x3034, 0x1a}, |
| 327 | {0x3035, 0x21}, |
| 328 | {0x3036, 0x62}, |
| 329 | {0x303c, 0x11}, |
| 330 | {0x3106, 0xf5}, |
| 331 | {0x3827, 0xec}, |
| 332 | {0x370c, 0x03}, |
| 333 | {0x3612, 0x59}, |
| 334 | {0x3618, 0x00}, |
| 335 | {0x5000, 0x06}, |
| 336 | {0x5002, 0x41}, |
| 337 | {0x5003, 0x08}, |
| 338 | {0x5a00, 0x08}, |
| 339 | {0x3000, 0x00}, |
| 340 | {0x3001, 0x00}, |
| 341 | {0x3002, 0x00}, |
| 342 | {0x3016, 0x08}, |
| 343 | {0x3017, 0xe0}, |
| 344 | {0x3018, 0x44}, |
| 345 | {0x301c, 0xf8}, |
| 346 | {0x301d, 0xf0}, |
| 347 | {0x3a18, 0x00}, |
| 348 | {0x3a19, 0xf8}, |
| 349 | {0x3c01, 0x80}, |
| 350 | {0x3b07, 0x0c}, |
| 351 | {0x3800, 0x00}, |
| 352 | {0x3801, 0x00}, |
| 353 | {0x3802, 0x00}, |
| 354 | {0x3803, 0x00}, |
| 355 | {0x3804, 0x0a}, |
| 356 | {0x3805, 0x3f}, |
| 357 | {0x3806, 0x07}, |
| 358 | {0x3807, 0xa3}, |
| 359 | {0x3808, 0x05}, |
| 360 | {0x3809, 0x10}, |
| 361 | {0x380a, 0x03}, |
| 362 | {0x380b, 0xcc}, |
| 363 | {0x380c, 0x07}, |
| 364 | {0x380d, 0x68}, |
| 365 | {0x3811, 0x0c}, |
| 366 | {0x3813, 0x06}, |
| 367 | {0x3814, 0x31}, |
| 368 | {0x3815, 0x31}, |
| 369 | {0x3630, 0x2e}, |
| 370 | {0x3632, 0xe2}, |
| 371 | {0x3633, 0x23}, |
| 372 | {0x3634, 0x44}, |
| 373 | {0x3636, 0x06}, |
| 374 | {0x3620, 0x64}, |
| 375 | {0x3621, 0xe0}, |
| 376 | {0x3600, 0x37}, |
| 377 | {0x3704, 0xa0}, |
| 378 | {0x3703, 0x5a}, |
| 379 | {0x3715, 0x78}, |
| 380 | {0x3717, 0x01}, |
| 381 | {0x3731, 0x02}, |
| 382 | {0x370b, 0x60}, |
| 383 | {0x3705, 0x1a}, |
| 384 | {0x3f05, 0x02}, |
| 385 | {0x3f06, 0x10}, |
| 386 | {0x3f01, 0x0a}, |
| 387 | {0x3a08, 0x01}, |
| 388 | {0x3a09, 0x28}, |
| 389 | {0x3a0a, 0x00}, |
| 390 | {0x3a0b, 0xf6}, |
| 391 | {0x3a0d, 0x08}, |
| 392 | {0x3a0e, 0x06}, |
| 393 | {0x3a0f, 0x58}, |
| 394 | {0x3a10, 0x50}, |
| 395 | {0x3a1b, 0x58}, |
| 396 | {0x3a1e, 0x50}, |
| 397 | {0x3a11, 0x60}, |
| 398 | {0x3a1f, 0x28}, |
| 399 | {0x4001, 0x02}, |
| 400 | {0x4004, 0x04}, |
| 401 | {0x4000, 0x09}, |
| 402 | {0x4837, 0x16}, |
| 403 | {0x4800, 0x24}, |
| 404 | {0x3503, 0x03}, |
| 405 | {0x3820, 0x41}, |
| 406 | {0x3821, 0x07}, |
| 407 | {0x350a, 0x00}, |
| 408 | {0x350b, 0x10}, |
| 409 | {0x3500, 0x00}, |
| 410 | {0x3501, 0x1a}, |
| 411 | {0x3502, 0xf0}, |
| 412 | {0x3212, 0xa0}, |
| 413 | {0x0100, 0x01}, |
| 414 | }; |
| 415 | |
| 416 | static struct regval_list ov5647_640x480_10bpp[] = { |
| 417 | {0x0100, 0x00}, |
| 418 | {0x0103, 0x01}, |
| 419 | {0x3035, 0x11}, |
| 420 | {0x3036, 0x46}, |
| 421 | {0x303c, 0x11}, |
| 422 | {0x3821, 0x07}, |
| 423 | {0x3820, 0x41}, |
| 424 | {0x370c, 0x03}, |
| 425 | {0x3612, 0x59}, |
| 426 | {0x3618, 0x00}, |
| 427 | {0x5000, 0x06}, |
| 428 | {0x5003, 0x08}, |
| 429 | {0x5a00, 0x08}, |
| 430 | {0x3000, 0xff}, |
| 431 | {0x3001, 0xff}, |
| 432 | {0x3002, 0xff}, |
| 433 | {0x301d, 0xf0}, |
| 434 | {0x3a18, 0x00}, |
| 435 | {0x3a19, 0xf8}, |
| 436 | {0x3c01, 0x80}, |
| 437 | {0x3b07, 0x0c}, |
| 438 | {0x380c, 0x07}, |
| 439 | {0x380d, 0x3c}, |
| 440 | {0x3814, 0x35}, |
| 441 | {0x3815, 0x35}, |
| 442 | {0x3708, 0x64}, |
| 443 | {0x3709, 0x52}, |
| 444 | {0x3808, 0x02}, |
| 445 | {0x3809, 0x80}, |
| 446 | {0x380a, 0x01}, |
| 447 | {0x380b, 0xe0}, |
| 448 | {0x3800, 0x00}, |
| 449 | {0x3801, 0x10}, |
| 450 | {0x3802, 0x00}, |
| 451 | {0x3803, 0x00}, |
| 452 | {0x3804, 0x0a}, |
| 453 | {0x3805, 0x2f}, |
| 454 | {0x3806, 0x07}, |
| 455 | {0x3807, 0x9f}, |
| 456 | {0x3630, 0x2e}, |
| 457 | {0x3632, 0xe2}, |
| 458 | {0x3633, 0x23}, |
| 459 | {0x3634, 0x44}, |
| 460 | {0x3620, 0x64}, |
| 461 | {0x3621, 0xe0}, |
| 462 | {0x3600, 0x37}, |
| 463 | {0x3704, 0xa0}, |
| 464 | {0x3703, 0x5a}, |
| 465 | {0x3715, 0x78}, |
| 466 | {0x3717, 0x01}, |
| 467 | {0x3731, 0x02}, |
| 468 | {0x370b, 0x60}, |
| 469 | {0x3705, 0x1a}, |
| 470 | {0x3f05, 0x02}, |
| 471 | {0x3f06, 0x10}, |
| 472 | {0x3f01, 0x0a}, |
| 473 | {0x3a08, 0x01}, |
| 474 | {0x3a09, 0x2e}, |
| 475 | {0x3a0a, 0x00}, |
| 476 | {0x3a0b, 0xfb}, |
| 477 | {0x3a0d, 0x02}, |
| 478 | {0x3a0e, 0x01}, |
| 479 | {0x3a0f, 0x58}, |
| 480 | {0x3a10, 0x50}, |
| 481 | {0x3a1b, 0x58}, |
| 482 | {0x3a1e, 0x50}, |
| 483 | {0x3a11, 0x60}, |
| 484 | {0x3a1f, 0x28}, |
| 485 | {0x4001, 0x02}, |
| 486 | {0x4004, 0x02}, |
| 487 | {0x4000, 0x09}, |
| 488 | {0x3000, 0x00}, |
| 489 | {0x3001, 0x00}, |
| 490 | {0x3002, 0x00}, |
| 491 | {0x3017, 0xe0}, |
| 492 | {0x301c, 0xfc}, |
| 493 | {0x3636, 0x06}, |
| 494 | {0x3016, 0x08}, |
| 495 | {0x3827, 0xec}, |
| 496 | {0x3018, 0x44}, |
| 497 | {0x3035, 0x21}, |
| 498 | {0x3106, 0xf5}, |
| 499 | {0x3034, 0x1a}, |
| 500 | {0x301c, 0xf8}, |
| 501 | {0x4800, 0x34}, |
| 502 | {0x3503, 0x03}, |
| 503 | {0x0100, 0x01}, |
| 504 | }; |
| 505 | |
| 506 | static const struct ov5647_mode ov5647_modes[] = { |
| 507 | /* 2592x1944 full resolution full FOV 10-bit mode. */ |
| 508 | { |
| 509 | .format = { |
| 510 | .code = MEDIA_BUS_FMT_SBGGR10_1X10, |
| 511 | .colorspace = V4L2_COLORSPACE_SRGB, |
| 512 | .field = V4L2_FIELD_NONE, |
| 513 | .width = 2592, |
| 514 | .height = 1944 |
| 515 | }, |
| 516 | .crop = { |
| 517 | .left = OV5647_PIXEL_ARRAY_LEFT, |
| 518 | .top = OV5647_PIXEL_ARRAY_TOP, |
| 519 | .width = 2592, |
| 520 | .height = 1944 |
| 521 | }, |
| 522 | .pixel_rate = 87500000, |
| 523 | .hts = 2844, |
| 524 | .vts = 0x7b0, |
| 525 | .reg_list = ov5647_2592x1944_10bpp, |
| 526 | .num_regs = ARRAY_SIZE(ov5647_2592x1944_10bpp) |
| 527 | }, |
| 528 | /* 1080p30 10-bit mode. Full resolution centre-cropped down to 1080p. */ |
| 529 | { |
| 530 | .format = { |
| 531 | .code = MEDIA_BUS_FMT_SBGGR10_1X10, |
| 532 | .colorspace = V4L2_COLORSPACE_SRGB, |
| 533 | .field = V4L2_FIELD_NONE, |
| 534 | .width = 1920, |
| 535 | .height = 1080 |
| 536 | }, |
| 537 | .crop = { |
| 538 | .left = 348 + OV5647_PIXEL_ARRAY_LEFT, |
| 539 | .top = 434 + OV5647_PIXEL_ARRAY_TOP, |
| 540 | .width = 1928, |
| 541 | .height = 1080, |
| 542 | }, |
| 543 | .pixel_rate = 81666700, |
| 544 | .hts = 2416, |
| 545 | .vts = 0x450, |
| 546 | .reg_list = ov5647_1080p30_10bpp, |
| 547 | .num_regs = ARRAY_SIZE(ov5647_1080p30_10bpp) |
| 548 | }, |
| 549 | /* 2x2 binned full FOV 10-bit mode. */ |
| 550 | { |
| 551 | .format = { |
| 552 | .code = MEDIA_BUS_FMT_SBGGR10_1X10, |
| 553 | .colorspace = V4L2_COLORSPACE_SRGB, |
| 554 | .field = V4L2_FIELD_NONE, |
| 555 | .width = 1296, |
| 556 | .height = 972 |
| 557 | }, |
| 558 | .crop = { |
| 559 | .left = OV5647_PIXEL_ARRAY_LEFT, |
| 560 | .top = OV5647_PIXEL_ARRAY_TOP, |
| 561 | .width = 2592, |
| 562 | .height = 1944, |
| 563 | }, |
| 564 | .pixel_rate = 81666700, |
| 565 | .hts = 1896, |
| 566 | .vts = 0x59b, |
| 567 | .reg_list = ov5647_2x2binned_10bpp, |
| 568 | .num_regs = ARRAY_SIZE(ov5647_2x2binned_10bpp) |
| 569 | }, |
| 570 | /* 10-bit VGA full FOV 60fps. 2x2 binned and subsampled down to VGA. */ |
| 571 | { |
| 572 | .format = { |
| 573 | .code = MEDIA_BUS_FMT_SBGGR10_1X10, |
| 574 | .colorspace = V4L2_COLORSPACE_SRGB, |
| 575 | .field = V4L2_FIELD_NONE, |
| 576 | .width = 640, |
| 577 | .height = 480 |
| 578 | }, |
| 579 | .crop = { |
| 580 | .left = 16 + OV5647_PIXEL_ARRAY_LEFT, |
| 581 | .top = OV5647_PIXEL_ARRAY_TOP, |
| 582 | .width = 2560, |
| 583 | .height = 1920, |
| 584 | }, |
| 585 | .pixel_rate = 55000000, |
| 586 | .hts = 1852, |
| 587 | .vts = 0x1f8, |
| 588 | .reg_list = ov5647_640x480_10bpp, |
| 589 | .num_regs = ARRAY_SIZE(ov5647_640x480_10bpp) |
| 590 | }, |
| 591 | }; |
| 592 | |
| 593 | /* Default sensor mode is 2x2 binned 640x480 SBGGR10_1X10. */ |
| 594 | #define OV5647_DEFAULT_MODE (&ov5647_modes[3]) |
| 595 | #define OV5647_DEFAULT_FORMAT (ov5647_modes[3].format) |
| 596 | |
| 597 | static int ov5647_write16(struct v4l2_subdev *sd, u16 reg, u16 val) |
| 598 | { |
| 599 | unsigned char data[4] = { reg >> 8, reg & 0xff, val >> 8, val & 0xff}; |
| 600 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 601 | int ret; |
| 602 | |
| 603 | ret = i2c_master_send(client, data, 4); |
| 604 | if (ret < 0) { |
| 605 | dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n", |
| 606 | __func__, reg); |
| 607 | return ret; |
| 608 | } |
| 609 | |
| 610 | return 0; |
| 611 | } |
| 612 | |
| 613 | static int ov5647_write(struct v4l2_subdev *sd, u16 reg, u8 val) |
| 614 | { |
| 615 | unsigned char data[3] = { reg >> 8, reg & 0xff, val}; |
| 616 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 617 | int ret; |
| 618 | |
| 619 | ret = i2c_master_send(client, data, 3); |
| 620 | if (ret < 0) { |
| 621 | dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n", |
| 622 | __func__, reg); |
| 623 | return ret; |
| 624 | } |
| 625 | |
| 626 | return 0; |
| 627 | } |
| 628 | |
| 629 | static int ov5647_read(struct v4l2_subdev *sd, u16 reg, u8 *val) |
| 630 | { |
| 631 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 632 | u8 buf[2] = { reg >> 8, reg & 0xff }; |
| 633 | struct i2c_msg msg[2]; |
| 634 | int ret; |
| 635 | |
| 636 | msg[0].addr = client->addr; |
| 637 | msg[0].flags = client->flags; |
| 638 | msg[0].buf = buf; |
| 639 | msg[0].len = sizeof(buf); |
| 640 | |
| 641 | msg[1].addr = client->addr; |
| 642 | msg[1].flags = client->flags | I2C_M_RD; |
| 643 | msg[1].buf = buf; |
| 644 | msg[1].len = 1; |
| 645 | |
| 646 | ret = i2c_transfer(client->adapter, msg, 2); |
| 647 | if (ret != 2) { |
| 648 | dev_err(&client->dev, "%s: i2c read error, reg: %x = %d\n", |
| 649 | __func__, reg, ret); |
| 650 | return ret >= 0 ? -EINVAL : ret; |
| 651 | } |
| 652 | |
| 653 | *val = buf[0]; |
| 654 | |
| 655 | return 0; |
| 656 | } |
| 657 | |
| 658 | static int ov5647_write_array(struct v4l2_subdev *sd, |
| 659 | const struct regval_list *regs, int array_size) |
| 660 | { |
| 661 | int i, ret; |
| 662 | |
| 663 | for (i = 0; i < array_size; i++) { |
| 664 | ret = ov5647_write(sd, regs[i].addr, regs[i].data); |
| 665 | if (ret < 0) |
| 666 | return ret; |
| 667 | } |
| 668 | |
| 669 | return 0; |
| 670 | } |
| 671 | |
| 672 | static int ov5647_set_virtual_channel(struct v4l2_subdev *sd, int channel) |
| 673 | { |
| 674 | u8 channel_id; |
| 675 | int ret; |
| 676 | |
| 677 | ret = ov5647_read(sd, OV5647_REG_MIPI_CTRL14, &channel_id); |
| 678 | if (ret < 0) |
| 679 | return ret; |
| 680 | |
| 681 | channel_id &= ~(3 << 6); |
| 682 | |
| 683 | return ov5647_write(sd, OV5647_REG_MIPI_CTRL14, |
| 684 | channel_id | (channel << 6)); |
| 685 | } |
| 686 | |
| 687 | static int ov5647_set_mode(struct v4l2_subdev *sd) |
| 688 | { |
| 689 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 690 | struct ov5647 *sensor = to_sensor(sd); |
| 691 | u8 resetval, rdval; |
| 692 | int ret; |
| 693 | |
| 694 | ret = ov5647_read(sd, OV5647_SW_STANDBY, &rdval); |
| 695 | if (ret < 0) |
| 696 | return ret; |
| 697 | |
| 698 | ret = ov5647_write_array(sd, sensor->mode->reg_list, |
| 699 | sensor->mode->num_regs); |
| 700 | if (ret < 0) { |
| 701 | dev_err(&client->dev, "write sensor default regs error\n"); |
| 702 | return ret; |
| 703 | } |
| 704 | |
| 705 | ret = ov5647_set_virtual_channel(sd, 0); |
| 706 | if (ret < 0) |
| 707 | return ret; |
| 708 | |
| 709 | ret = ov5647_read(sd, OV5647_SW_STANDBY, &resetval); |
| 710 | if (ret < 0) |
| 711 | return ret; |
| 712 | |
| 713 | if (!(resetval & 0x01)) { |
| 714 | dev_err(&client->dev, "Device was in SW standby"); |
| 715 | ret = ov5647_write(sd, OV5647_SW_STANDBY, 0x01); |
| 716 | if (ret < 0) |
| 717 | return ret; |
| 718 | } |
| 719 | |
| 720 | return 0; |
| 721 | } |
| 722 | |
| 723 | static int ov5647_stream_on(struct v4l2_subdev *sd) |
| 724 | { |
| 725 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 726 | struct ov5647 *sensor = to_sensor(sd); |
| 727 | u8 val = MIPI_CTRL00_BUS_IDLE; |
| 728 | int ret; |
| 729 | |
| 730 | ret = ov5647_set_mode(sd); |
| 731 | if (ret) { |
| 732 | dev_err(&client->dev, "Failed to program sensor mode: %d\n", ret); |
| 733 | return ret; |
| 734 | } |
| 735 | |
| 736 | /* Apply customized values from user when stream starts. */ |
| 737 | ret = __v4l2_ctrl_handler_setup(sd->ctrl_handler); |
| 738 | if (ret) |
| 739 | return ret; |
| 740 | |
| 741 | if (sensor->clock_ncont) |
| 742 | val |= MIPI_CTRL00_CLOCK_LANE_GATE | |
| 743 | MIPI_CTRL00_LINE_SYNC_ENABLE; |
| 744 | |
| 745 | ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, val); |
| 746 | if (ret < 0) |
| 747 | return ret; |
| 748 | |
| 749 | ret = ov5647_write(sd, OV5647_REG_FRAME_OFF_NUMBER, 0x00); |
| 750 | if (ret < 0) |
| 751 | return ret; |
| 752 | |
| 753 | return ov5647_write(sd, OV5640_REG_PAD_OUT, 0x00); |
| 754 | } |
| 755 | |
| 756 | static int ov5647_stream_off(struct v4l2_subdev *sd) |
| 757 | { |
| 758 | int ret; |
| 759 | |
| 760 | ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, |
| 761 | MIPI_CTRL00_CLOCK_LANE_GATE | MIPI_CTRL00_BUS_IDLE | |
| 762 | MIPI_CTRL00_CLOCK_LANE_DISABLE); |
| 763 | if (ret < 0) |
| 764 | return ret; |
| 765 | |
| 766 | ret = ov5647_write(sd, OV5647_REG_FRAME_OFF_NUMBER, 0x0f); |
| 767 | if (ret < 0) |
| 768 | return ret; |
| 769 | |
| 770 | return ov5647_write(sd, OV5640_REG_PAD_OUT, 0x01); |
| 771 | } |
| 772 | |
| 773 | static int ov5647_power_on(struct device *dev) |
| 774 | { |
| 775 | struct ov5647 *sensor = dev_get_drvdata(dev); |
| 776 | int ret; |
| 777 | |
| 778 | dev_dbg(dev, "OV5647 power on\n"); |
| 779 | |
| 780 | if (sensor->pwdn) { |
| 781 | gpiod_set_value_cansleep(sensor->pwdn, 0); |
| 782 | msleep(PWDN_ACTIVE_DELAY_MS); |
| 783 | } |
| 784 | |
| 785 | ret = clk_prepare_enable(sensor->xclk); |
| 786 | if (ret < 0) { |
| 787 | dev_err(dev, "clk prepare enable failed\n"); |
| 788 | goto error_pwdn; |
| 789 | } |
| 790 | |
| 791 | ret = ov5647_write_array(&sensor->sd, sensor_oe_enable_regs, |
| 792 | ARRAY_SIZE(sensor_oe_enable_regs)); |
| 793 | if (ret < 0) { |
| 794 | dev_err(dev, "write sensor_oe_enable_regs error\n"); |
| 795 | goto error_clk_disable; |
| 796 | } |
| 797 | |
| 798 | /* Stream off to coax lanes into LP-11 state. */ |
| 799 | ret = ov5647_stream_off(&sensor->sd); |
| 800 | if (ret < 0) { |
| 801 | dev_err(dev, "camera not available, check power\n"); |
| 802 | goto error_clk_disable; |
| 803 | } |
| 804 | |
| 805 | return 0; |
| 806 | |
| 807 | error_clk_disable: |
| 808 | clk_disable_unprepare(sensor->xclk); |
| 809 | error_pwdn: |
| 810 | gpiod_set_value_cansleep(sensor->pwdn, 1); |
| 811 | |
| 812 | return ret; |
| 813 | } |
| 814 | |
| 815 | static int ov5647_power_off(struct device *dev) |
| 816 | { |
| 817 | struct ov5647 *sensor = dev_get_drvdata(dev); |
| 818 | u8 rdval; |
| 819 | int ret; |
| 820 | |
| 821 | dev_dbg(dev, "OV5647 power off\n"); |
| 822 | |
| 823 | ret = ov5647_write_array(&sensor->sd, sensor_oe_disable_regs, |
| 824 | ARRAY_SIZE(sensor_oe_disable_regs)); |
| 825 | if (ret < 0) |
| 826 | dev_dbg(dev, "disable oe failed\n"); |
| 827 | |
| 828 | /* Enter software standby */ |
| 829 | ret = ov5647_read(&sensor->sd, OV5647_SW_STANDBY, &rdval); |
| 830 | if (ret < 0) |
| 831 | dev_dbg(dev, "software standby failed\n"); |
| 832 | |
| 833 | rdval &= ~0x01; |
| 834 | ret = ov5647_write(&sensor->sd, OV5647_SW_STANDBY, rdval); |
| 835 | if (ret < 0) |
| 836 | dev_dbg(dev, "software standby failed\n"); |
| 837 | |
| 838 | clk_disable_unprepare(sensor->xclk); |
| 839 | gpiod_set_value_cansleep(sensor->pwdn, 1); |
| 840 | |
| 841 | return 0; |
| 842 | } |
| 843 | |
| 844 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 845 | static int ov5647_sensor_get_register(struct v4l2_subdev *sd, |
| 846 | struct v4l2_dbg_register *reg) |
| 847 | { |
| 848 | int ret; |
| 849 | u8 val; |
| 850 | |
| 851 | ret = ov5647_read(sd, reg->reg & 0xff, &val); |
| 852 | if (ret < 0) |
| 853 | return ret; |
| 854 | |
| 855 | reg->val = val; |
| 856 | reg->size = 1; |
| 857 | |
| 858 | return 0; |
| 859 | } |
| 860 | |
| 861 | static int ov5647_sensor_set_register(struct v4l2_subdev *sd, |
| 862 | const struct v4l2_dbg_register *reg) |
| 863 | { |
| 864 | return ov5647_write(sd, reg->reg & 0xff, reg->val & 0xff); |
| 865 | } |
| 866 | #endif |
| 867 | |
| 868 | /* Subdev core operations registration */ |
| 869 | static const struct v4l2_subdev_core_ops ov5647_subdev_core_ops = { |
| 870 | .subscribe_event = v4l2_ctrl_subdev_subscribe_event, |
| 871 | .unsubscribe_event = v4l2_event_subdev_unsubscribe, |
| 872 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 873 | .g_register = ov5647_sensor_get_register, |
| 874 | .s_register = ov5647_sensor_set_register, |
| 875 | #endif |
| 876 | }; |
| 877 | |
| 878 | static const struct v4l2_rect * |
| 879 | __ov5647_get_pad_crop(struct ov5647 *ov5647, |
| 880 | struct v4l2_subdev_state *sd_state, |
| 881 | unsigned int pad, enum v4l2_subdev_format_whence which) |
| 882 | { |
| 883 | switch (which) { |
| 884 | case V4L2_SUBDEV_FORMAT_TRY: |
| 885 | return v4l2_subdev_state_get_crop(sd_state, pad); |
| 886 | case V4L2_SUBDEV_FORMAT_ACTIVE: |
| 887 | return &ov5647->mode->crop; |
| 888 | } |
| 889 | |
| 890 | return NULL; |
| 891 | } |
| 892 | |
| 893 | static int ov5647_s_stream(struct v4l2_subdev *sd, int enable) |
| 894 | { |
| 895 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 896 | struct ov5647 *sensor = to_sensor(sd); |
| 897 | int ret; |
| 898 | |
| 899 | mutex_lock(&sensor->lock); |
| 900 | |
| 901 | if (enable) { |
| 902 | ret = pm_runtime_resume_and_get(&client->dev); |
| 903 | if (ret < 0) |
| 904 | goto error_unlock; |
| 905 | |
| 906 | ret = ov5647_stream_on(sd); |
| 907 | if (ret < 0) { |
| 908 | dev_err(&client->dev, "stream start failed: %d\n", ret); |
| 909 | goto error_pm; |
| 910 | } |
| 911 | } else { |
| 912 | ret = ov5647_stream_off(sd); |
| 913 | if (ret < 0) { |
| 914 | dev_err(&client->dev, "stream stop failed: %d\n", ret); |
| 915 | goto error_pm; |
| 916 | } |
| 917 | pm_runtime_put(&client->dev); |
| 918 | } |
| 919 | |
| 920 | mutex_unlock(&sensor->lock); |
| 921 | |
| 922 | return 0; |
| 923 | |
| 924 | error_pm: |
| 925 | pm_runtime_put(&client->dev); |
| 926 | error_unlock: |
| 927 | mutex_unlock(&sensor->lock); |
| 928 | |
| 929 | return ret; |
| 930 | } |
| 931 | |
| 932 | static const struct v4l2_subdev_video_ops ov5647_subdev_video_ops = { |
| 933 | .s_stream = ov5647_s_stream, |
| 934 | }; |
| 935 | |
| 936 | static int ov5647_enum_mbus_code(struct v4l2_subdev *sd, |
| 937 | struct v4l2_subdev_state *sd_state, |
| 938 | struct v4l2_subdev_mbus_code_enum *code) |
| 939 | { |
| 940 | if (code->index > 0) |
| 941 | return -EINVAL; |
| 942 | |
| 943 | code->code = MEDIA_BUS_FMT_SBGGR10_1X10; |
| 944 | |
| 945 | return 0; |
| 946 | } |
| 947 | |
| 948 | static int ov5647_enum_frame_size(struct v4l2_subdev *sd, |
| 949 | struct v4l2_subdev_state *sd_state, |
| 950 | struct v4l2_subdev_frame_size_enum *fse) |
| 951 | { |
| 952 | const struct v4l2_mbus_framefmt *fmt; |
| 953 | |
| 954 | if (fse->code != MEDIA_BUS_FMT_SBGGR10_1X10 || |
| 955 | fse->index >= ARRAY_SIZE(ov5647_modes)) |
| 956 | return -EINVAL; |
| 957 | |
| 958 | fmt = &ov5647_modes[fse->index].format; |
| 959 | fse->min_width = fmt->width; |
| 960 | fse->max_width = fmt->width; |
| 961 | fse->min_height = fmt->height; |
| 962 | fse->max_height = fmt->height; |
| 963 | |
| 964 | return 0; |
| 965 | } |
| 966 | |
| 967 | static int ov5647_get_pad_fmt(struct v4l2_subdev *sd, |
| 968 | struct v4l2_subdev_state *sd_state, |
| 969 | struct v4l2_subdev_format *format) |
| 970 | { |
| 971 | struct v4l2_mbus_framefmt *fmt = &format->format; |
| 972 | const struct v4l2_mbus_framefmt *sensor_format; |
| 973 | struct ov5647 *sensor = to_sensor(sd); |
| 974 | |
| 975 | mutex_lock(&sensor->lock); |
| 976 | switch (format->which) { |
| 977 | case V4L2_SUBDEV_FORMAT_TRY: |
| 978 | sensor_format = v4l2_subdev_state_get_format(sd_state, |
| 979 | format->pad); |
| 980 | break; |
| 981 | default: |
| 982 | sensor_format = &sensor->mode->format; |
| 983 | break; |
| 984 | } |
| 985 | |
| 986 | *fmt = *sensor_format; |
| 987 | mutex_unlock(&sensor->lock); |
| 988 | |
| 989 | return 0; |
| 990 | } |
| 991 | |
| 992 | static int ov5647_set_pad_fmt(struct v4l2_subdev *sd, |
| 993 | struct v4l2_subdev_state *sd_state, |
| 994 | struct v4l2_subdev_format *format) |
| 995 | { |
| 996 | struct v4l2_mbus_framefmt *fmt = &format->format; |
| 997 | struct ov5647 *sensor = to_sensor(sd); |
| 998 | const struct ov5647_mode *mode; |
| 999 | |
| 1000 | mode = v4l2_find_nearest_size(ov5647_modes, ARRAY_SIZE(ov5647_modes), |
| 1001 | format.width, format.height, |
| 1002 | fmt->width, fmt->height); |
| 1003 | |
| 1004 | /* Update the sensor mode and apply at it at streamon time. */ |
| 1005 | mutex_lock(&sensor->lock); |
| 1006 | if (format->which == V4L2_SUBDEV_FORMAT_TRY) { |
| 1007 | *v4l2_subdev_state_get_format(sd_state, format->pad) = mode->format; |
| 1008 | } else { |
| 1009 | int exposure_max, exposure_def; |
| 1010 | int hblank, vblank; |
| 1011 | |
| 1012 | sensor->mode = mode; |
| 1013 | __v4l2_ctrl_modify_range(sensor->pixel_rate, mode->pixel_rate, |
| 1014 | mode->pixel_rate, 1, mode->pixel_rate); |
| 1015 | |
| 1016 | hblank = mode->hts - mode->format.width; |
| 1017 | __v4l2_ctrl_modify_range(sensor->hblank, hblank, hblank, 1, |
| 1018 | hblank); |
| 1019 | |
| 1020 | vblank = mode->vts - mode->format.height; |
| 1021 | __v4l2_ctrl_modify_range(sensor->vblank, OV5647_VBLANK_MIN, |
| 1022 | OV5647_VTS_MAX - mode->format.height, |
| 1023 | 1, vblank); |
| 1024 | __v4l2_ctrl_s_ctrl(sensor->vblank, vblank); |
| 1025 | |
| 1026 | exposure_max = mode->vts - 4; |
| 1027 | exposure_def = min(exposure_max, OV5647_EXPOSURE_DEFAULT); |
| 1028 | __v4l2_ctrl_modify_range(sensor->exposure, |
| 1029 | sensor->exposure->minimum, |
| 1030 | exposure_max, sensor->exposure->step, |
| 1031 | exposure_def); |
| 1032 | } |
| 1033 | *fmt = mode->format; |
| 1034 | mutex_unlock(&sensor->lock); |
| 1035 | |
| 1036 | return 0; |
| 1037 | } |
| 1038 | |
| 1039 | static int ov5647_get_selection(struct v4l2_subdev *sd, |
| 1040 | struct v4l2_subdev_state *sd_state, |
| 1041 | struct v4l2_subdev_selection *sel) |
| 1042 | { |
| 1043 | switch (sel->target) { |
| 1044 | case V4L2_SEL_TGT_CROP: { |
| 1045 | struct ov5647 *sensor = to_sensor(sd); |
| 1046 | |
| 1047 | mutex_lock(&sensor->lock); |
| 1048 | sel->r = *__ov5647_get_pad_crop(sensor, sd_state, sel->pad, |
| 1049 | sel->which); |
| 1050 | mutex_unlock(&sensor->lock); |
| 1051 | |
| 1052 | return 0; |
| 1053 | } |
| 1054 | |
| 1055 | case V4L2_SEL_TGT_NATIVE_SIZE: |
| 1056 | sel->r.top = 0; |
| 1057 | sel->r.left = 0; |
| 1058 | sel->r.width = OV5647_NATIVE_WIDTH; |
| 1059 | sel->r.height = OV5647_NATIVE_HEIGHT; |
| 1060 | |
| 1061 | return 0; |
| 1062 | |
| 1063 | case V4L2_SEL_TGT_CROP_DEFAULT: |
| 1064 | case V4L2_SEL_TGT_CROP_BOUNDS: |
| 1065 | sel->r.top = OV5647_PIXEL_ARRAY_TOP; |
| 1066 | sel->r.left = OV5647_PIXEL_ARRAY_LEFT; |
| 1067 | sel->r.width = OV5647_PIXEL_ARRAY_WIDTH; |
| 1068 | sel->r.height = OV5647_PIXEL_ARRAY_HEIGHT; |
| 1069 | |
| 1070 | return 0; |
| 1071 | } |
| 1072 | |
| 1073 | return -EINVAL; |
| 1074 | } |
| 1075 | |
| 1076 | static const struct v4l2_subdev_pad_ops ov5647_subdev_pad_ops = { |
| 1077 | .enum_mbus_code = ov5647_enum_mbus_code, |
| 1078 | .enum_frame_size = ov5647_enum_frame_size, |
| 1079 | .set_fmt = ov5647_set_pad_fmt, |
| 1080 | .get_fmt = ov5647_get_pad_fmt, |
| 1081 | .get_selection = ov5647_get_selection, |
| 1082 | }; |
| 1083 | |
| 1084 | static const struct v4l2_subdev_ops ov5647_subdev_ops = { |
| 1085 | .core = &ov5647_subdev_core_ops, |
| 1086 | .video = &ov5647_subdev_video_ops, |
| 1087 | .pad = &ov5647_subdev_pad_ops, |
| 1088 | }; |
| 1089 | |
| 1090 | static int ov5647_detect(struct v4l2_subdev *sd) |
| 1091 | { |
| 1092 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 1093 | u8 read; |
| 1094 | int ret; |
| 1095 | |
| 1096 | ret = ov5647_write(sd, OV5647_SW_RESET, 0x01); |
| 1097 | if (ret < 0) |
| 1098 | return ret; |
| 1099 | |
| 1100 | ret = ov5647_read(sd, OV5647_REG_CHIPID_H, &read); |
| 1101 | if (ret < 0) |
| 1102 | return ret; |
| 1103 | |
| 1104 | if (read != 0x56) { |
| 1105 | dev_err(&client->dev, "ID High expected 0x56 got %x", read); |
| 1106 | return -ENODEV; |
| 1107 | } |
| 1108 | |
| 1109 | ret = ov5647_read(sd, OV5647_REG_CHIPID_L, &read); |
| 1110 | if (ret < 0) |
| 1111 | return ret; |
| 1112 | |
| 1113 | if (read != 0x47) { |
| 1114 | dev_err(&client->dev, "ID Low expected 0x47 got %x", read); |
| 1115 | return -ENODEV; |
| 1116 | } |
| 1117 | |
| 1118 | return ov5647_write(sd, OV5647_SW_RESET, 0x00); |
| 1119 | } |
| 1120 | |
| 1121 | static int ov5647_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) |
| 1122 | { |
| 1123 | struct v4l2_mbus_framefmt *format = |
| 1124 | v4l2_subdev_state_get_format(fh->state, 0); |
| 1125 | struct v4l2_rect *crop = v4l2_subdev_state_get_crop(fh->state, 0); |
| 1126 | |
| 1127 | crop->left = OV5647_PIXEL_ARRAY_LEFT; |
| 1128 | crop->top = OV5647_PIXEL_ARRAY_TOP; |
| 1129 | crop->width = OV5647_PIXEL_ARRAY_WIDTH; |
| 1130 | crop->height = OV5647_PIXEL_ARRAY_HEIGHT; |
| 1131 | |
| 1132 | *format = OV5647_DEFAULT_FORMAT; |
| 1133 | |
| 1134 | return 0; |
| 1135 | } |
| 1136 | |
| 1137 | static const struct v4l2_subdev_internal_ops ov5647_subdev_internal_ops = { |
| 1138 | .open = ov5647_open, |
| 1139 | }; |
| 1140 | |
| 1141 | static int ov5647_s_auto_white_balance(struct v4l2_subdev *sd, u32 val) |
| 1142 | { |
| 1143 | return ov5647_write(sd, OV5647_REG_AWB, val ? 1 : 0); |
| 1144 | } |
| 1145 | |
| 1146 | static int ov5647_s_autogain(struct v4l2_subdev *sd, u32 val) |
| 1147 | { |
| 1148 | int ret; |
| 1149 | u8 reg; |
| 1150 | |
| 1151 | /* Non-zero turns on AGC by clearing bit 1.*/ |
| 1152 | ret = ov5647_read(sd, OV5647_REG_AEC_AGC, ®); |
| 1153 | if (ret) |
| 1154 | return ret; |
| 1155 | |
| 1156 | return ov5647_write(sd, OV5647_REG_AEC_AGC, val ? reg & ~BIT(1) |
| 1157 | : reg | BIT(1)); |
| 1158 | } |
| 1159 | |
| 1160 | static int ov5647_s_exposure_auto(struct v4l2_subdev *sd, u32 val) |
| 1161 | { |
| 1162 | int ret; |
| 1163 | u8 reg; |
| 1164 | |
| 1165 | /* |
| 1166 | * Everything except V4L2_EXPOSURE_MANUAL turns on AEC by |
| 1167 | * clearing bit 0. |
| 1168 | */ |
| 1169 | ret = ov5647_read(sd, OV5647_REG_AEC_AGC, ®); |
| 1170 | if (ret) |
| 1171 | return ret; |
| 1172 | |
| 1173 | return ov5647_write(sd, OV5647_REG_AEC_AGC, |
| 1174 | val == V4L2_EXPOSURE_MANUAL ? reg | BIT(0) |
| 1175 | : reg & ~BIT(0)); |
| 1176 | } |
| 1177 | |
| 1178 | static int ov5647_s_analogue_gain(struct v4l2_subdev *sd, u32 val) |
| 1179 | { |
| 1180 | int ret; |
| 1181 | |
| 1182 | /* 10 bits of gain, 2 in the high register. */ |
| 1183 | ret = ov5647_write(sd, OV5647_REG_GAIN_HI, (val >> 8) & 3); |
| 1184 | if (ret) |
| 1185 | return ret; |
| 1186 | |
| 1187 | return ov5647_write(sd, OV5647_REG_GAIN_LO, val & 0xff); |
| 1188 | } |
| 1189 | |
| 1190 | static int ov5647_s_exposure(struct v4l2_subdev *sd, u32 val) |
| 1191 | { |
| 1192 | int ret; |
| 1193 | |
| 1194 | /* |
| 1195 | * Sensor has 20 bits, but the bottom 4 bits are fractions of a line |
| 1196 | * which we leave as zero (and don't receive in "val"). |
| 1197 | */ |
| 1198 | ret = ov5647_write(sd, OV5647_REG_EXP_HI, (val >> 12) & 0xf); |
| 1199 | if (ret) |
| 1200 | return ret; |
| 1201 | |
| 1202 | ret = ov5647_write(sd, OV5647_REG_EXP_MID, (val >> 4) & 0xff); |
| 1203 | if (ret) |
| 1204 | return ret; |
| 1205 | |
| 1206 | return ov5647_write(sd, OV5647_REG_EXP_LO, (val & 0xf) << 4); |
| 1207 | } |
| 1208 | |
| 1209 | static int ov5647_s_ctrl(struct v4l2_ctrl *ctrl) |
| 1210 | { |
| 1211 | struct ov5647 *sensor = container_of(ctrl->handler, |
| 1212 | struct ov5647, ctrls); |
| 1213 | struct v4l2_subdev *sd = &sensor->sd; |
| 1214 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 1215 | int ret = 0; |
| 1216 | |
| 1217 | |
| 1218 | /* v4l2_ctrl_lock() locks our own mutex */ |
| 1219 | |
| 1220 | if (ctrl->id == V4L2_CID_VBLANK) { |
| 1221 | int exposure_max, exposure_def; |
| 1222 | |
| 1223 | /* Update max exposure while meeting expected vblanking */ |
| 1224 | exposure_max = sensor->mode->format.height + ctrl->val - 4; |
| 1225 | exposure_def = min(exposure_max, OV5647_EXPOSURE_DEFAULT); |
| 1226 | __v4l2_ctrl_modify_range(sensor->exposure, |
| 1227 | sensor->exposure->minimum, |
| 1228 | exposure_max, sensor->exposure->step, |
| 1229 | exposure_def); |
| 1230 | } |
| 1231 | |
| 1232 | /* |
| 1233 | * If the device is not powered up do not apply any controls |
| 1234 | * to H/W at this time. Instead the controls will be restored |
| 1235 | * at s_stream(1) time. |
| 1236 | */ |
| 1237 | if (pm_runtime_get_if_in_use(&client->dev) == 0) |
| 1238 | return 0; |
| 1239 | |
| 1240 | switch (ctrl->id) { |
| 1241 | case V4L2_CID_AUTO_WHITE_BALANCE: |
| 1242 | ret = ov5647_s_auto_white_balance(sd, ctrl->val); |
| 1243 | break; |
| 1244 | case V4L2_CID_AUTOGAIN: |
| 1245 | ret = ov5647_s_autogain(sd, ctrl->val); |
| 1246 | break; |
| 1247 | case V4L2_CID_EXPOSURE_AUTO: |
| 1248 | ret = ov5647_s_exposure_auto(sd, ctrl->val); |
| 1249 | break; |
| 1250 | case V4L2_CID_ANALOGUE_GAIN: |
| 1251 | ret = ov5647_s_analogue_gain(sd, ctrl->val); |
| 1252 | break; |
| 1253 | case V4L2_CID_EXPOSURE: |
| 1254 | ret = ov5647_s_exposure(sd, ctrl->val); |
| 1255 | break; |
| 1256 | case V4L2_CID_VBLANK: |
| 1257 | ret = ov5647_write16(sd, OV5647_REG_VTS_HI, |
| 1258 | sensor->mode->format.height + ctrl->val); |
| 1259 | break; |
| 1260 | case V4L2_CID_TEST_PATTERN: |
| 1261 | ret = ov5647_write(sd, OV5647_REG_ISPCTRL3D, |
| 1262 | ov5647_test_pattern_val[ctrl->val]); |
| 1263 | break; |
| 1264 | |
| 1265 | /* Read-only, but we adjust it based on mode. */ |
| 1266 | case V4L2_CID_PIXEL_RATE: |
| 1267 | case V4L2_CID_HBLANK: |
| 1268 | /* Read-only, but we adjust it based on mode. */ |
| 1269 | break; |
| 1270 | |
| 1271 | default: |
| 1272 | dev_info(&client->dev, |
| 1273 | "Control (id:0x%x, val:0x%x) not supported\n", |
| 1274 | ctrl->id, ctrl->val); |
| 1275 | return -EINVAL; |
| 1276 | } |
| 1277 | |
| 1278 | pm_runtime_put(&client->dev); |
| 1279 | |
| 1280 | return ret; |
| 1281 | } |
| 1282 | |
| 1283 | static const struct v4l2_ctrl_ops ov5647_ctrl_ops = { |
| 1284 | .s_ctrl = ov5647_s_ctrl, |
| 1285 | }; |
| 1286 | |
| 1287 | static int ov5647_init_controls(struct ov5647 *sensor) |
| 1288 | { |
| 1289 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd); |
| 1290 | int hblank, exposure_max, exposure_def; |
| 1291 | |
| 1292 | v4l2_ctrl_handler_init(&sensor->ctrls, 9); |
| 1293 | |
| 1294 | v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, |
| 1295 | V4L2_CID_AUTOGAIN, 0, 1, 1, 0); |
| 1296 | |
| 1297 | v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, |
| 1298 | V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 0); |
| 1299 | |
| 1300 | v4l2_ctrl_new_std_menu(&sensor->ctrls, &ov5647_ctrl_ops, |
| 1301 | V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL, |
| 1302 | 0, V4L2_EXPOSURE_MANUAL); |
| 1303 | |
| 1304 | exposure_max = sensor->mode->vts - 4; |
| 1305 | exposure_def = min(exposure_max, OV5647_EXPOSURE_DEFAULT); |
| 1306 | sensor->exposure = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, |
| 1307 | V4L2_CID_EXPOSURE, |
| 1308 | OV5647_EXPOSURE_MIN, |
| 1309 | exposure_max, OV5647_EXPOSURE_STEP, |
| 1310 | exposure_def); |
| 1311 | |
| 1312 | /* min: 16 = 1.0x; max (10 bits); default: 32 = 2.0x. */ |
| 1313 | v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, |
| 1314 | V4L2_CID_ANALOGUE_GAIN, 16, 1023, 1, 32); |
| 1315 | |
| 1316 | /* By default, PIXEL_RATE is read only, but it does change per mode */ |
| 1317 | sensor->pixel_rate = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, |
| 1318 | V4L2_CID_PIXEL_RATE, |
| 1319 | sensor->mode->pixel_rate, |
| 1320 | sensor->mode->pixel_rate, 1, |
| 1321 | sensor->mode->pixel_rate); |
| 1322 | |
| 1323 | /* By default, HBLANK is read only, but it does change per mode. */ |
| 1324 | hblank = sensor->mode->hts - sensor->mode->format.width; |
| 1325 | sensor->hblank = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, |
| 1326 | V4L2_CID_HBLANK, hblank, hblank, 1, |
| 1327 | hblank); |
| 1328 | |
| 1329 | sensor->vblank = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, |
| 1330 | V4L2_CID_VBLANK, OV5647_VBLANK_MIN, |
| 1331 | OV5647_VTS_MAX - |
| 1332 | sensor->mode->format.height, 1, |
| 1333 | sensor->mode->vts - |
| 1334 | sensor->mode->format.height); |
| 1335 | |
| 1336 | v4l2_ctrl_new_std_menu_items(&sensor->ctrls, &ov5647_ctrl_ops, |
| 1337 | V4L2_CID_TEST_PATTERN, |
| 1338 | ARRAY_SIZE(ov5647_test_pattern_menu) - 1, |
| 1339 | 0, 0, ov5647_test_pattern_menu); |
| 1340 | |
| 1341 | if (sensor->ctrls.error) |
| 1342 | goto handler_free; |
| 1343 | |
| 1344 | sensor->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY; |
| 1345 | sensor->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; |
| 1346 | sensor->sd.ctrl_handler = &sensor->ctrls; |
| 1347 | |
| 1348 | return 0; |
| 1349 | |
| 1350 | handler_free: |
| 1351 | dev_err(&client->dev, "%s Controls initialization failed (%d)\n", |
| 1352 | __func__, sensor->ctrls.error); |
| 1353 | v4l2_ctrl_handler_free(&sensor->ctrls); |
| 1354 | |
| 1355 | return sensor->ctrls.error; |
| 1356 | } |
| 1357 | |
| 1358 | static int ov5647_parse_dt(struct ov5647 *sensor, struct device_node *np) |
| 1359 | { |
| 1360 | struct v4l2_fwnode_endpoint bus_cfg = { |
| 1361 | .bus_type = V4L2_MBUS_CSI2_DPHY, |
| 1362 | }; |
| 1363 | struct device_node *ep __free(device_node) = |
| 1364 | of_graph_get_endpoint_by_regs(np, 0, -1); |
| 1365 | int ret; |
| 1366 | |
| 1367 | if (!ep) |
| 1368 | return -EINVAL; |
| 1369 | |
| 1370 | ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &bus_cfg); |
| 1371 | if (ret) |
| 1372 | return ret; |
| 1373 | |
| 1374 | sensor->clock_ncont = bus_cfg.bus.mipi_csi2.flags & |
| 1375 | V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK; |
| 1376 | |
| 1377 | return 0; |
| 1378 | } |
| 1379 | |
| 1380 | static int ov5647_probe(struct i2c_client *client) |
| 1381 | { |
| 1382 | struct device_node *np = client->dev.of_node; |
| 1383 | struct device *dev = &client->dev; |
| 1384 | struct ov5647 *sensor; |
| 1385 | struct v4l2_subdev *sd; |
| 1386 | u32 xclk_freq; |
| 1387 | int ret; |
| 1388 | |
| 1389 | sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); |
| 1390 | if (!sensor) |
| 1391 | return -ENOMEM; |
| 1392 | |
| 1393 | if (IS_ENABLED(CONFIG_OF) && np) { |
| 1394 | ret = ov5647_parse_dt(sensor, np); |
| 1395 | if (ret) { |
| 1396 | dev_err(dev, "DT parsing error: %d\n", ret); |
| 1397 | return ret; |
| 1398 | } |
| 1399 | } |
| 1400 | |
| 1401 | sensor->xclk = devm_clk_get(dev, NULL); |
| 1402 | if (IS_ERR(sensor->xclk)) { |
| 1403 | dev_err(dev, "could not get xclk"); |
| 1404 | return PTR_ERR(sensor->xclk); |
| 1405 | } |
| 1406 | |
| 1407 | xclk_freq = clk_get_rate(sensor->xclk); |
| 1408 | if (xclk_freq != 25000000) { |
| 1409 | dev_err(dev, "Unsupported clock frequency: %u\n", xclk_freq); |
| 1410 | return -EINVAL; |
| 1411 | } |
| 1412 | |
| 1413 | /* Request the power down GPIO asserted. */ |
| 1414 | sensor->pwdn = devm_gpiod_get_optional(dev, "pwdn", GPIOD_OUT_HIGH); |
| 1415 | if (IS_ERR(sensor->pwdn)) { |
| 1416 | dev_err(dev, "Failed to get 'pwdn' gpio\n"); |
| 1417 | return -EINVAL; |
| 1418 | } |
| 1419 | |
| 1420 | mutex_init(&sensor->lock); |
| 1421 | |
| 1422 | sensor->mode = OV5647_DEFAULT_MODE; |
| 1423 | |
| 1424 | ret = ov5647_init_controls(sensor); |
| 1425 | if (ret) |
| 1426 | goto mutex_destroy; |
| 1427 | |
| 1428 | sd = &sensor->sd; |
| 1429 | v4l2_i2c_subdev_init(sd, client, &ov5647_subdev_ops); |
| 1430 | sd->internal_ops = &ov5647_subdev_internal_ops; |
| 1431 | sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; |
| 1432 | |
| 1433 | sensor->pad.flags = MEDIA_PAD_FL_SOURCE; |
| 1434 | sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; |
| 1435 | ret = media_entity_pads_init(&sd->entity, 1, &sensor->pad); |
| 1436 | if (ret < 0) |
| 1437 | goto ctrl_handler_free; |
| 1438 | |
| 1439 | ret = ov5647_power_on(dev); |
| 1440 | if (ret) |
| 1441 | goto entity_cleanup; |
| 1442 | |
| 1443 | ret = ov5647_detect(sd); |
| 1444 | if (ret < 0) |
| 1445 | goto power_off; |
| 1446 | |
| 1447 | ret = v4l2_async_register_subdev(sd); |
| 1448 | if (ret < 0) |
| 1449 | goto power_off; |
| 1450 | |
| 1451 | /* Enable runtime PM and turn off the device */ |
| 1452 | pm_runtime_set_active(dev); |
| 1453 | pm_runtime_enable(dev); |
| 1454 | pm_runtime_idle(dev); |
| 1455 | |
| 1456 | dev_dbg(dev, "OmniVision OV5647 camera driver probed\n"); |
| 1457 | |
| 1458 | return 0; |
| 1459 | |
| 1460 | power_off: |
| 1461 | ov5647_power_off(dev); |
| 1462 | entity_cleanup: |
| 1463 | media_entity_cleanup(&sd->entity); |
| 1464 | ctrl_handler_free: |
| 1465 | v4l2_ctrl_handler_free(&sensor->ctrls); |
| 1466 | mutex_destroy: |
| 1467 | mutex_destroy(&sensor->lock); |
| 1468 | |
| 1469 | return ret; |
| 1470 | } |
| 1471 | |
| 1472 | static void ov5647_remove(struct i2c_client *client) |
| 1473 | { |
| 1474 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| 1475 | struct ov5647 *sensor = to_sensor(sd); |
| 1476 | |
| 1477 | v4l2_async_unregister_subdev(&sensor->sd); |
| 1478 | media_entity_cleanup(&sensor->sd.entity); |
| 1479 | v4l2_ctrl_handler_free(&sensor->ctrls); |
| 1480 | v4l2_device_unregister_subdev(sd); |
| 1481 | pm_runtime_disable(&client->dev); |
| 1482 | mutex_destroy(&sensor->lock); |
| 1483 | } |
| 1484 | |
| 1485 | static const struct dev_pm_ops ov5647_pm_ops = { |
| 1486 | SET_RUNTIME_PM_OPS(ov5647_power_off, ov5647_power_on, NULL) |
| 1487 | }; |
| 1488 | |
| 1489 | static const struct i2c_device_id ov5647_id[] = { |
| 1490 | { "ov5647" }, |
| 1491 | { /* sentinel */ } |
| 1492 | }; |
| 1493 | MODULE_DEVICE_TABLE(i2c, ov5647_id); |
| 1494 | |
| 1495 | #if IS_ENABLED(CONFIG_OF) |
| 1496 | static const struct of_device_id ov5647_of_match[] = { |
| 1497 | { .compatible = "ovti,ov5647" }, |
| 1498 | { /* sentinel */ }, |
| 1499 | }; |
| 1500 | MODULE_DEVICE_TABLE(of, ov5647_of_match); |
| 1501 | #endif |
| 1502 | |
| 1503 | static struct i2c_driver ov5647_driver = { |
| 1504 | .driver = { |
| 1505 | .of_match_table = of_match_ptr(ov5647_of_match), |
| 1506 | .name = "ov5647", |
| 1507 | .pm = &ov5647_pm_ops, |
| 1508 | }, |
| 1509 | .probe = ov5647_probe, |
| 1510 | .remove = ov5647_remove, |
| 1511 | .id_table = ov5647_id, |
| 1512 | }; |
| 1513 | |
| 1514 | module_i2c_driver(ov5647_driver); |
| 1515 | |
| 1516 | MODULE_AUTHOR("Ramiro Oliveira <roliveir@synopsys.com>"); |
| 1517 | MODULE_DESCRIPTION("A low-level driver for OmniVision ov5647 sensors"); |
| 1518 | MODULE_LICENSE("GPL v2"); |