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ov5640.c
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linux-6.19.14/drivers/media/i2c/ov5640.c
1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved. 4 * Copyright (C) 2014-2017 Mentor Graphics Inc. 5 */ 6 7#include <linux/clk.h> 8#include <linux/clk-provider.h> 9#include <linux/clkdev.h> 10#include <linux/ctype.h> 11#include <linux/delay.h> 12#include <linux/device.h> 13#include <linux/gpio/consumer.h> 14#include <linux/i2c.h> 15#include <linux/init.h> 16#include <linux/mod_devicetable.h> 17#include <linux/module.h> 18#include <linux/pm_runtime.h> 19#include <linux/regulator/consumer.h> 20#include <linux/slab.h> 21#include <linux/types.h> 22#include <media/v4l2-async.h> 23#include <media/v4l2-ctrls.h> 24#include <media/v4l2-device.h> 25#include <media/v4l2-event.h> 26#include <media/v4l2-fwnode.h> 27#include <media/v4l2-subdev.h> 28 29/* min/typical/max system clock (xclk) frequencies */ 30#define OV5640_XCLK_MIN 6000000 31#define OV5640_XCLK_MAX 54000000 32 33#define OV5640_NATIVE_WIDTH 2624 34#define OV5640_NATIVE_HEIGHT 1964 35#define OV5640_PIXEL_ARRAY_TOP 14 36#define OV5640_PIXEL_ARRAY_LEFT 16 37#define OV5640_PIXEL_ARRAY_WIDTH 2592 38#define OV5640_PIXEL_ARRAY_HEIGHT 1944 39 40/* FIXME: not documented. */ 41#define OV5640_MIN_VBLANK 24 42#define OV5640_MAX_VTS 3375 43 44#define OV5640_DEFAULT_SLAVE_ID 0x3c 45 46#define OV5640_LINK_RATE_MAX 490000000U 47 48#define OV5640_REG_SYS_RESET02 0x3002 49#define OV5640_REG_SYS_CLOCK_ENABLE02 0x3006 50#define OV5640_REG_SYS_CTRL0 0x3008 51#define OV5640_REG_SYS_CTRL0_SW_PWDN 0x42 52#define OV5640_REG_SYS_CTRL0_SW_PWUP 0x02 53#define OV5640_REG_SYS_CTRL0_SW_RST 0x82 54#define OV5640_REG_CHIP_ID 0x300a 55#define OV5640_REG_IO_MIPI_CTRL00 0x300e 56#define OV5640_REG_PAD_OUTPUT_ENABLE01 0x3017 57#define OV5640_REG_PAD_OUTPUT_ENABLE02 0x3018 58#define OV5640_REG_PAD_OUTPUT00 0x3019 59#define OV5640_REG_SYSTEM_CONTROL1 0x302e 60#define OV5640_REG_SC_PLL_CTRL0 0x3034 61#define OV5640_REG_SC_PLL_CTRL1 0x3035 62#define OV5640_REG_SC_PLL_CTRL2 0x3036 63#define OV5640_REG_SC_PLL_CTRL3 0x3037 64#define OV5640_REG_SLAVE_ID 0x3100 65#define OV5640_REG_SCCB_SYS_CTRL1 0x3103 66#define OV5640_REG_SYS_ROOT_DIVIDER 0x3108 67#define OV5640_REG_AWB_R_GAIN 0x3400 68#define OV5640_REG_AWB_G_GAIN 0x3402 69#define OV5640_REG_AWB_B_GAIN 0x3404 70#define OV5640_REG_AWB_MANUAL_CTRL 0x3406 71#define OV5640_REG_AEC_PK_EXPOSURE_HI 0x3500 72#define OV5640_REG_AEC_PK_EXPOSURE_MED 0x3501 73#define OV5640_REG_AEC_PK_EXPOSURE_LO 0x3502 74#define OV5640_REG_AEC_PK_MANUAL 0x3503 75#define OV5640_REG_AEC_PK_REAL_GAIN 0x350a 76#define OV5640_REG_AEC_PK_VTS 0x350c 77#define OV5640_REG_TIMING_HS 0x3800 78#define OV5640_REG_TIMING_VS 0x3802 79#define OV5640_REG_TIMING_HW 0x3804 80#define OV5640_REG_TIMING_VH 0x3806 81#define OV5640_REG_TIMING_DVPHO 0x3808 82#define OV5640_REG_TIMING_DVPVO 0x380a 83#define OV5640_REG_TIMING_HTS 0x380c 84#define OV5640_REG_TIMING_VTS 0x380e 85#define OV5640_REG_TIMING_HOFFS 0x3810 86#define OV5640_REG_TIMING_VOFFS 0x3812 87#define OV5640_REG_TIMING_TC_REG20 0x3820 88#define OV5640_REG_TIMING_TC_REG21 0x3821 89#define OV5640_REG_AEC_CTRL00 0x3a00 90#define OV5640_REG_AEC_B50_STEP 0x3a08 91#define OV5640_REG_AEC_B60_STEP 0x3a0a 92#define OV5640_REG_AEC_CTRL0D 0x3a0d 93#define OV5640_REG_AEC_CTRL0E 0x3a0e 94#define OV5640_REG_AEC_CTRL0F 0x3a0f 95#define OV5640_REG_AEC_CTRL10 0x3a10 96#define OV5640_REG_AEC_CTRL11 0x3a11 97#define OV5640_REG_AEC_CTRL1B 0x3a1b 98#define OV5640_REG_AEC_CTRL1E 0x3a1e 99#define OV5640_REG_AEC_CTRL1F 0x3a1f 100#define OV5640_REG_HZ5060_CTRL00 0x3c00 101#define OV5640_REG_HZ5060_CTRL01 0x3c01 102#define OV5640_REG_SIGMADELTA_CTRL0C 0x3c0c 103#define OV5640_REG_FRAME_CTRL01 0x4202 104#define OV5640_REG_FORMAT_CONTROL00 0x4300 105#define OV5640_REG_VFIFO_HSIZE 0x4602 106#define OV5640_REG_VFIFO_VSIZE 0x4604 107#define OV5640_REG_JPG_MODE_SELECT 0x4713 108#define OV5640_REG_CCIR656_CTRL00 0x4730 109#define OV5640_REG_POLARITY_CTRL00 0x4740 110#define OV5640_REG_MIPI_CTRL00 0x4800 111#define OV5640_REG_DEBUG_MODE 0x4814 112#define OV5640_REG_PCLK_PERIOD 0x4837 113#define OV5640_REG_ISP_FORMAT_MUX_CTRL 0x501f 114#define OV5640_REG_PRE_ISP_TEST_SET1 0x503d 115#define OV5640_REG_SDE_CTRL0 0x5580 116#define OV5640_REG_SDE_CTRL1 0x5581 117#define OV5640_REG_SDE_CTRL3 0x5583 118#define OV5640_REG_SDE_CTRL4 0x5584 119#define OV5640_REG_SDE_CTRL5 0x5585 120#define OV5640_REG_AVG_READOUT 0x56a1 121 122enum ov5640_mode_id { 123 OV5640_MODE_QQVGA_160_120 = 0, 124 OV5640_MODE_QCIF_176_144, 125 OV5640_MODE_QVGA_320_240, 126 OV5640_MODE_VGA_640_480, 127 OV5640_MODE_NTSC_720_480, 128 OV5640_MODE_PAL_720_576, 129 OV5640_MODE_XGA_1024_768, 130 OV5640_MODE_720P_1280_720, 131 OV5640_MODE_1080P_1920_1080, 132 OV5640_MODE_QSXGA_2592_1944, 133 OV5640_NUM_MODES, 134}; 135 136enum ov5640_frame_rate { 137 OV5640_15_FPS = 0, 138 OV5640_30_FPS, 139 OV5640_60_FPS, 140 OV5640_NUM_FRAMERATES, 141}; 142 143enum ov5640_pixel_rate_id { 144 OV5640_PIXEL_RATE_168M, 145 OV5640_PIXEL_RATE_148M, 146 OV5640_PIXEL_RATE_124M, 147 OV5640_PIXEL_RATE_96M, 148 OV5640_PIXEL_RATE_48M, 149 OV5640_NUM_PIXEL_RATES, 150}; 151 152/* 153 * The chip manual suggests 24/48/96/192 MHz pixel clocks. 154 * 155 * 192MHz exceeds the sysclk limits; use 168MHz as maximum pixel rate for 156 * full resolution mode @15 FPS. 157 */ 158static const u32 ov5640_pixel_rates[] = { 159 [OV5640_PIXEL_RATE_168M] = 168000000, 160 [OV5640_PIXEL_RATE_148M] = 148000000, 161 [OV5640_PIXEL_RATE_124M] = 124000000, 162 [OV5640_PIXEL_RATE_96M] = 96000000, 163 [OV5640_PIXEL_RATE_48M] = 48000000, 164}; 165 166/* 167 * MIPI CSI-2 link frequencies. 168 * 169 * Derived from the above defined pixel rate for bpp = (8, 16, 24) and 170 * data_lanes = (1, 2) 171 * 172 * link_freq = (pixel_rate * bpp) / (2 * data_lanes) 173 */ 174static const s64 ov5640_csi2_link_freqs[] = { 175 992000000, 888000000, 768000000, 744000000, 672000000, 672000000, 176 592000000, 592000000, 576000000, 576000000, 496000000, 496000000, 177 384000000, 384000000, 384000000, 336000000, 296000000, 288000000, 178 248000000, 192000000, 192000000, 192000000, 96000000, 179}; 180 181/* Link freq for default mode: UYVY 16 bpp, 2 data lanes. */ 182#define OV5640_DEFAULT_LINK_FREQ 13 183 184enum ov5640_format_mux { 185 OV5640_FMT_MUX_YUV422 = 0, 186 OV5640_FMT_MUX_RGB, 187 OV5640_FMT_MUX_DITHER, 188 OV5640_FMT_MUX_RAW_DPC, 189 OV5640_FMT_MUX_SNR_RAW, 190 OV5640_FMT_MUX_RAW_CIP, 191}; 192 193struct ov5640_pixfmt { 194 u32 code; 195 u32 colorspace; 196 u8 bpp; 197 u8 ctrl00; 198 enum ov5640_format_mux mux; 199}; 200 201static const struct ov5640_pixfmt ov5640_dvp_formats[] = { 202 { 203 /* YUV422, YUYV */ 204 .code = MEDIA_BUS_FMT_JPEG_1X8, 205 .colorspace = V4L2_COLORSPACE_JPEG, 206 .bpp = 16, 207 .ctrl00 = 0x30, 208 .mux = OV5640_FMT_MUX_YUV422, 209 }, { 210 /* YUV422, UYVY */ 211 .code = MEDIA_BUS_FMT_UYVY8_2X8, 212 .colorspace = V4L2_COLORSPACE_SRGB, 213 .bpp = 16, 214 .ctrl00 = 0x3f, 215 .mux = OV5640_FMT_MUX_YUV422, 216 }, { 217 /* YUV422, YUYV */ 218 .code = MEDIA_BUS_FMT_YUYV8_2X8, 219 .colorspace = V4L2_COLORSPACE_SRGB, 220 .bpp = 16, 221 .ctrl00 = 0x30, 222 .mux = OV5640_FMT_MUX_YUV422, 223 }, { 224 /* RGB565 {g[2:0],b[4:0]},{r[4:0],g[5:3]} */ 225 .code = MEDIA_BUS_FMT_RGB565_2X8_LE, 226 .colorspace = V4L2_COLORSPACE_SRGB, 227 .bpp = 16, 228 .ctrl00 = 0x6f, 229 .mux = OV5640_FMT_MUX_RGB, 230 }, { 231 /* RGB565 {r[4:0],g[5:3]},{g[2:0],b[4:0]} */ 232 .code = MEDIA_BUS_FMT_RGB565_2X8_BE, 233 .colorspace = V4L2_COLORSPACE_SRGB, 234 .bpp = 16, 235 .ctrl00 = 0x61, 236 .mux = OV5640_FMT_MUX_RGB, 237 }, { 238 /* Raw, BGBG... / GRGR... */ 239 .code = MEDIA_BUS_FMT_SBGGR8_1X8, 240 .colorspace = V4L2_COLORSPACE_SRGB, 241 .bpp = 8, 242 .ctrl00 = 0x00, 243 .mux = OV5640_FMT_MUX_RAW_DPC, 244 }, { 245 /* Raw bayer, GBGB... / RGRG... */ 246 .code = MEDIA_BUS_FMT_SGBRG8_1X8, 247 .colorspace = V4L2_COLORSPACE_SRGB, 248 .bpp = 8, 249 .ctrl00 = 0x01, 250 .mux = OV5640_FMT_MUX_RAW_DPC, 251 }, { 252 /* Raw bayer, GRGR... / BGBG... */ 253 .code = MEDIA_BUS_FMT_SGRBG8_1X8, 254 .colorspace = V4L2_COLORSPACE_SRGB, 255 .bpp = 8, 256 .ctrl00 = 0x02, 257 .mux = OV5640_FMT_MUX_RAW_DPC, 258 }, { 259 /* Raw bayer, RGRG... / GBGB... */ 260 .code = MEDIA_BUS_FMT_SRGGB8_1X8, 261 .colorspace = V4L2_COLORSPACE_SRGB, 262 .bpp = 8, 263 .ctrl00 = 0x03, 264 .mux = OV5640_FMT_MUX_RAW_DPC, 265 }, 266 { /* sentinel */ } 267}; 268 269static const struct ov5640_pixfmt ov5640_csi2_formats[] = { 270 { 271 /* YUV422, YUYV */ 272 .code = MEDIA_BUS_FMT_JPEG_1X8, 273 .colorspace = V4L2_COLORSPACE_JPEG, 274 .bpp = 16, 275 .ctrl00 = 0x30, 276 .mux = OV5640_FMT_MUX_YUV422, 277 }, { 278 /* YUV422, UYVY */ 279 .code = MEDIA_BUS_FMT_UYVY8_1X16, 280 .colorspace = V4L2_COLORSPACE_SRGB, 281 .bpp = 16, 282 .ctrl00 = 0x3f, 283 .mux = OV5640_FMT_MUX_YUV422, 284 }, { 285 /* YUV422, YUYV */ 286 .code = MEDIA_BUS_FMT_YUYV8_1X16, 287 .colorspace = V4L2_COLORSPACE_SRGB, 288 .bpp = 16, 289 .ctrl00 = 0x30, 290 .mux = OV5640_FMT_MUX_YUV422, 291 }, { 292 /* RGB565 {g[2:0],b[4:0]},{r[4:0],g[5:3]} */ 293 .code = MEDIA_BUS_FMT_RGB565_1X16, 294 .colorspace = V4L2_COLORSPACE_SRGB, 295 .bpp = 16, 296 .ctrl00 = 0x6f, 297 .mux = OV5640_FMT_MUX_RGB, 298 }, { 299 /* BGR888: RGB */ 300 .code = MEDIA_BUS_FMT_BGR888_1X24, 301 .colorspace = V4L2_COLORSPACE_SRGB, 302 .bpp = 24, 303 .ctrl00 = 0x23, 304 .mux = OV5640_FMT_MUX_RGB, 305 }, { 306 /* Raw, BGBG... / GRGR... */ 307 .code = MEDIA_BUS_FMT_SBGGR8_1X8, 308 .colorspace = V4L2_COLORSPACE_SRGB, 309 .bpp = 8, 310 .ctrl00 = 0x00, 311 .mux = OV5640_FMT_MUX_RAW_DPC, 312 }, { 313 /* Raw bayer, GBGB... / RGRG... */ 314 .code = MEDIA_BUS_FMT_SGBRG8_1X8, 315 .colorspace = V4L2_COLORSPACE_SRGB, 316 .bpp = 8, 317 .ctrl00 = 0x01, 318 .mux = OV5640_FMT_MUX_RAW_DPC, 319 }, { 320 /* Raw bayer, GRGR... / BGBG... */ 321 .code = MEDIA_BUS_FMT_SGRBG8_1X8, 322 .colorspace = V4L2_COLORSPACE_SRGB, 323 .bpp = 8, 324 .ctrl00 = 0x02, 325 .mux = OV5640_FMT_MUX_RAW_DPC, 326 }, { 327 /* Raw bayer, RGRG... / GBGB... */ 328 .code = MEDIA_BUS_FMT_SRGGB8_1X8, 329 .colorspace = V4L2_COLORSPACE_SRGB, 330 .bpp = 8, 331 .ctrl00 = 0x03, 332 .mux = OV5640_FMT_MUX_RAW_DPC, 333 }, 334 { /* sentinel */ } 335}; 336 337/* 338 * FIXME: remove this when a subdev API becomes available 339 * to set the MIPI CSI-2 virtual channel. 340 */ 341static unsigned int virtual_channel; 342module_param(virtual_channel, uint, 0444); 343MODULE_PARM_DESC(virtual_channel, 344 "MIPI CSI-2 virtual channel (0..3), default 0"); 345 346static const int ov5640_framerates[] = { 347 [OV5640_15_FPS] = 15, 348 [OV5640_30_FPS] = 30, 349 [OV5640_60_FPS] = 60, 350}; 351 352/* regulator supplies */ 353static const char * const ov5640_supply_name[] = { 354 "DOVDD", /* Digital I/O (1.8V) supply */ 355 "AVDD", /* Analog (2.8V) supply */ 356 "DVDD", /* Digital Core (1.5V) supply */ 357}; 358 359#define OV5640_NUM_SUPPLIES ARRAY_SIZE(ov5640_supply_name) 360 361/* 362 * Image size under 1280 * 960 are SUBSAMPLING 363 * Image size upper 1280 * 960 are SCALING 364 */ 365enum ov5640_downsize_mode { 366 SUBSAMPLING, 367 SCALING, 368}; 369 370struct reg_value { 371 u16 reg_addr; 372 u8 val; 373 u8 mask; 374 u32 delay_ms; 375}; 376 377struct ov5640_timings { 378 /* Analog crop rectangle. */ 379 struct v4l2_rect analog_crop; 380 /* Visible crop: from analog crop top-left corner. */ 381 struct v4l2_rect crop; 382 /* Total pixels per line: width + fixed hblank. */ 383 u32 htot; 384 /* Default vertical blanking: frame height = height + vblank. */ 385 u32 vblank_def; 386}; 387 388struct ov5640_mode_info { 389 enum ov5640_mode_id id; 390 enum ov5640_downsize_mode dn_mode; 391 enum ov5640_pixel_rate_id pixel_rate; 392 393 unsigned int width; 394 unsigned int height; 395 396 struct ov5640_timings dvp_timings; 397 struct ov5640_timings csi2_timings; 398 399 const struct reg_value *reg_data; 400 u32 reg_data_size; 401 402 /* Used by set_frame_interval only. */ 403 u32 max_fps; 404 u32 def_fps; 405}; 406 407struct ov5640_ctrls { 408 struct v4l2_ctrl_handler handler; 409 struct v4l2_ctrl *pixel_rate; 410 struct v4l2_ctrl *link_freq; 411 struct v4l2_ctrl *hblank; 412 struct v4l2_ctrl *vblank; 413 struct { 414 struct v4l2_ctrl *auto_exp; 415 struct v4l2_ctrl *exposure; 416 }; 417 struct { 418 struct v4l2_ctrl *auto_wb; 419 struct v4l2_ctrl *blue_balance; 420 struct v4l2_ctrl *red_balance; 421 }; 422 struct { 423 struct v4l2_ctrl *auto_gain; 424 struct v4l2_ctrl *gain; 425 }; 426 struct v4l2_ctrl *brightness; 427 struct v4l2_ctrl *light_freq; 428 struct v4l2_ctrl *saturation; 429 struct v4l2_ctrl *contrast; 430 struct v4l2_ctrl *hue; 431 struct v4l2_ctrl *test_pattern; 432 struct v4l2_ctrl *hflip; 433 struct v4l2_ctrl *vflip; 434}; 435 436struct ov5640_dev { 437 struct i2c_client *i2c_client; 438 struct v4l2_subdev sd; 439 struct media_pad pad; 440 struct v4l2_fwnode_endpoint ep; /* the parsed DT endpoint info */ 441 struct clk *xclk; /* system clock to OV5640 */ 442 u32 xclk_freq; 443 444 struct regulator_bulk_data supplies[OV5640_NUM_SUPPLIES]; 445 struct gpio_desc *reset_gpio; 446 struct gpio_desc *pwdn_gpio; 447 bool upside_down; 448 449 /* lock to protect all members below */ 450 struct mutex lock; 451 452 struct v4l2_mbus_framefmt fmt; 453 bool pending_fmt_change; 454 455 const struct ov5640_mode_info *current_mode; 456 const struct ov5640_mode_info *last_mode; 457 enum ov5640_frame_rate current_fr; 458 struct v4l2_fract frame_interval; 459 s64 current_link_freq; 460 461 struct ov5640_ctrls ctrls; 462 463 u32 prev_sysclk, prev_hts; 464 u32 ae_low, ae_high, ae_target; 465 466 bool pending_mode_change; 467 bool streaming; 468}; 469 470static inline struct ov5640_dev *to_ov5640_dev(struct v4l2_subdev *sd) 471{ 472 return container_of(sd, struct ov5640_dev, sd); 473} 474 475static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl) 476{ 477 return &container_of(ctrl->handler, struct ov5640_dev, 478 ctrls.handler)->sd; 479} 480 481static inline bool ov5640_is_csi2(const struct ov5640_dev *sensor) 482{ 483 return sensor->ep.bus_type == V4L2_MBUS_CSI2_DPHY; 484} 485 486static inline const struct ov5640_pixfmt * 487ov5640_formats(struct ov5640_dev *sensor) 488{ 489 return ov5640_is_csi2(sensor) ? ov5640_csi2_formats 490 : ov5640_dvp_formats; 491} 492 493static const struct ov5640_pixfmt * 494ov5640_code_to_pixfmt(struct ov5640_dev *sensor, u32 code) 495{ 496 const struct ov5640_pixfmt *formats = ov5640_formats(sensor); 497 unsigned int i; 498 499 for (i = 0; formats[i].code; ++i) { 500 if (formats[i].code == code) 501 return &formats[i]; 502 } 503 504 return &formats[0]; 505} 506 507static u32 ov5640_code_to_bpp(struct ov5640_dev *sensor, u32 code) 508{ 509 const struct ov5640_pixfmt *format = ov5640_code_to_pixfmt(sensor, 510 code); 511 512 return format->bpp; 513} 514 515/* 516 * FIXME: all of these register tables are likely filled with 517 * entries that set the register to their power-on default values, 518 * and which are otherwise not touched by this driver. Those entries 519 * should be identified and removed to speed register load time 520 * over i2c. 521 */ 522/* YUV422 UYVY VGA@30fps */ 523 524static const struct v4l2_mbus_framefmt ov5640_csi2_default_fmt = { 525 .code = MEDIA_BUS_FMT_UYVY8_1X16, 526 .width = 640, 527 .height = 480, 528 .colorspace = V4L2_COLORSPACE_SRGB, 529 .ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(V4L2_COLORSPACE_SRGB), 530 .quantization = V4L2_QUANTIZATION_FULL_RANGE, 531 .xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(V4L2_COLORSPACE_SRGB), 532 .field = V4L2_FIELD_NONE, 533}; 534 535static const struct v4l2_mbus_framefmt ov5640_dvp_default_fmt = { 536 .code = MEDIA_BUS_FMT_UYVY8_2X8, 537 .width = 640, 538 .height = 480, 539 .colorspace = V4L2_COLORSPACE_SRGB, 540 .ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(V4L2_COLORSPACE_SRGB), 541 .quantization = V4L2_QUANTIZATION_FULL_RANGE, 542 .xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(V4L2_COLORSPACE_SRGB), 543 .field = V4L2_FIELD_NONE, 544}; 545 546static const struct reg_value ov5640_init_setting[] = { 547 {0x3103, 0x11, 0, 0}, 548 {0x3103, 0x03, 0, 0}, {0x3630, 0x36, 0, 0}, 549 {0x3631, 0x0e, 0, 0}, {0x3632, 0xe2, 0, 0}, {0x3633, 0x12, 0, 0}, 550 {0x3621, 0xe0, 0, 0}, {0x3704, 0xa0, 0, 0}, {0x3703, 0x5a, 0, 0}, 551 {0x3715, 0x78, 0, 0}, {0x3717, 0x01, 0, 0}, {0x370b, 0x60, 0, 0}, 552 {0x3705, 0x1a, 0, 0}, {0x3905, 0x02, 0, 0}, {0x3906, 0x10, 0, 0}, 553 {0x3901, 0x0a, 0, 0}, {0x3731, 0x12, 0, 0}, {0x3600, 0x08, 0, 0}, 554 {0x3601, 0x33, 0, 0}, {0x302d, 0x60, 0, 0}, {0x3620, 0x52, 0, 0}, 555 {0x371b, 0x20, 0, 0}, {0x471c, 0x50, 0, 0}, {0x3a13, 0x43, 0, 0}, 556 {0x3a18, 0x00, 0, 0}, {0x3a19, 0xf8, 0, 0}, {0x3635, 0x13, 0, 0}, 557 {0x3636, 0x03, 0, 0}, {0x3634, 0x40, 0, 0}, {0x3622, 0x01, 0, 0}, 558 {0x3c01, 0xa4, 0, 0}, {0x3c04, 0x28, 0, 0}, {0x3c05, 0x98, 0, 0}, 559 {0x3c06, 0x00, 0, 0}, {0x3c07, 0x08, 0, 0}, {0x3c08, 0x00, 0, 0}, 560 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0}, 561 {0x3820, 0x41, 0, 0}, {0x3821, 0x07, 0, 0}, {0x3814, 0x31, 0, 0}, 562 {0x3815, 0x31, 0, 0}, 563 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0}, 564 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0}, 565 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0}, 566 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0}, 567 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0}, 568 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x3000, 0x00, 0, 0}, 569 {0x3002, 0x1c, 0, 0}, {0x3004, 0xff, 0, 0}, {0x3006, 0xc3, 0, 0}, 570 {0x302e, 0x08, 0, 0}, {0x4300, 0x3f, 0, 0}, 571 {0x501f, 0x00, 0, 0}, {0x440e, 0x00, 0, 0}, {0x4837, 0x0a, 0, 0}, 572 {0x5000, 0xa7, 0, 0}, {0x5001, 0xa3, 0, 0}, {0x5180, 0xff, 0, 0}, 573 {0x5181, 0xf2, 0, 0}, {0x5182, 0x00, 0, 0}, {0x5183, 0x14, 0, 0}, 574 {0x5184, 0x25, 0, 0}, {0x5185, 0x24, 0, 0}, {0x5186, 0x09, 0, 0}, 575 {0x5187, 0x09, 0, 0}, {0x5188, 0x09, 0, 0}, {0x5189, 0x88, 0, 0}, 576 {0x518a, 0x54, 0, 0}, {0x518b, 0xee, 0, 0}, {0x518c, 0xb2, 0, 0}, 577 {0x518d, 0x50, 0, 0}, {0x518e, 0x34, 0, 0}, {0x518f, 0x6b, 0, 0}, 578 {0x5190, 0x46, 0, 0}, {0x5191, 0xf8, 0, 0}, {0x5192, 0x04, 0, 0}, 579 {0x5193, 0x70, 0, 0}, {0x5194, 0xf0, 0, 0}, {0x5195, 0xf0, 0, 0}, 580 {0x5196, 0x03, 0, 0}, {0x5197, 0x01, 0, 0}, {0x5198, 0x04, 0, 0}, 581 {0x5199, 0x6c, 0, 0}, {0x519a, 0x04, 0, 0}, {0x519b, 0x00, 0, 0}, 582 {0x519c, 0x09, 0, 0}, {0x519d, 0x2b, 0, 0}, {0x519e, 0x38, 0, 0}, 583 {0x5381, 0x1e, 0, 0}, {0x5382, 0x5b, 0, 0}, {0x5383, 0x08, 0, 0}, 584 {0x5384, 0x0a, 0, 0}, {0x5385, 0x7e, 0, 0}, {0x5386, 0x88, 0, 0}, 585 {0x5387, 0x7c, 0, 0}, {0x5388, 0x6c, 0, 0}, {0x5389, 0x10, 0, 0}, 586 {0x538a, 0x01, 0, 0}, {0x538b, 0x98, 0, 0}, {0x5300, 0x08, 0, 0}, 587 {0x5301, 0x30, 0, 0}, {0x5302, 0x10, 0, 0}, {0x5303, 0x00, 0, 0}, 588 {0x5304, 0x08, 0, 0}, {0x5305, 0x30, 0, 0}, {0x5306, 0x08, 0, 0}, 589 {0x5307, 0x16, 0, 0}, {0x5309, 0x08, 0, 0}, {0x530a, 0x30, 0, 0}, 590 {0x530b, 0x04, 0, 0}, {0x530c, 0x06, 0, 0}, {0x5480, 0x01, 0, 0}, 591 {0x5481, 0x08, 0, 0}, {0x5482, 0x14, 0, 0}, {0x5483, 0x28, 0, 0}, 592 {0x5484, 0x51, 0, 0}, {0x5485, 0x65, 0, 0}, {0x5486, 0x71, 0, 0}, 593 {0x5487, 0x7d, 0, 0}, {0x5488, 0x87, 0, 0}, {0x5489, 0x91, 0, 0}, 594 {0x548a, 0x9a, 0, 0}, {0x548b, 0xaa, 0, 0}, {0x548c, 0xb8, 0, 0}, 595 {0x548d, 0xcd, 0, 0}, {0x548e, 0xdd, 0, 0}, {0x548f, 0xea, 0, 0}, 596 {0x5490, 0x1d, 0, 0}, {0x5580, 0x02, 0, 0}, {0x5583, 0x40, 0, 0}, 597 {0x5584, 0x10, 0, 0}, {0x5589, 0x10, 0, 0}, {0x558a, 0x00, 0, 0}, 598 {0x558b, 0xf8, 0, 0}, {0x5800, 0x23, 0, 0}, {0x5801, 0x14, 0, 0}, 599 {0x5802, 0x0f, 0, 0}, {0x5803, 0x0f, 0, 0}, {0x5804, 0x12, 0, 0}, 600 {0x5805, 0x26, 0, 0}, {0x5806, 0x0c, 0, 0}, {0x5807, 0x08, 0, 0}, 601 {0x5808, 0x05, 0, 0}, {0x5809, 0x05, 0, 0}, {0x580a, 0x08, 0, 0}, 602 {0x580b, 0x0d, 0, 0}, {0x580c, 0x08, 0, 0}, {0x580d, 0x03, 0, 0}, 603 {0x580e, 0x00, 0, 0}, {0x580f, 0x00, 0, 0}, {0x5810, 0x03, 0, 0}, 604 {0x5811, 0x09, 0, 0}, {0x5812, 0x07, 0, 0}, {0x5813, 0x03, 0, 0}, 605 {0x5814, 0x00, 0, 0}, {0x5815, 0x01, 0, 0}, {0x5816, 0x03, 0, 0}, 606 {0x5817, 0x08, 0, 0}, {0x5818, 0x0d, 0, 0}, {0x5819, 0x08, 0, 0}, 607 {0x581a, 0x05, 0, 0}, {0x581b, 0x06, 0, 0}, {0x581c, 0x08, 0, 0}, 608 {0x581d, 0x0e, 0, 0}, {0x581e, 0x29, 0, 0}, {0x581f, 0x17, 0, 0}, 609 {0x5820, 0x11, 0, 0}, {0x5821, 0x11, 0, 0}, {0x5822, 0x15, 0, 0}, 610 {0x5823, 0x28, 0, 0}, {0x5824, 0x46, 0, 0}, {0x5825, 0x26, 0, 0}, 611 {0x5826, 0x08, 0, 0}, {0x5827, 0x26, 0, 0}, {0x5828, 0x64, 0, 0}, 612 {0x5829, 0x26, 0, 0}, {0x582a, 0x24, 0, 0}, {0x582b, 0x22, 0, 0}, 613 {0x582c, 0x24, 0, 0}, {0x582d, 0x24, 0, 0}, {0x582e, 0x06, 0, 0}, 614 {0x582f, 0x22, 0, 0}, {0x5830, 0x40, 0, 0}, {0x5831, 0x42, 0, 0}, 615 {0x5832, 0x24, 0, 0}, {0x5833, 0x26, 0, 0}, {0x5834, 0x24, 0, 0}, 616 {0x5835, 0x22, 0, 0}, {0x5836, 0x22, 0, 0}, {0x5837, 0x26, 0, 0}, 617 {0x5838, 0x44, 0, 0}, {0x5839, 0x24, 0, 0}, {0x583a, 0x26, 0, 0}, 618 {0x583b, 0x28, 0, 0}, {0x583c, 0x42, 0, 0}, {0x583d, 0xce, 0, 0}, 619 {0x5025, 0x00, 0, 0}, {0x3a0f, 0x30, 0, 0}, {0x3a10, 0x28, 0, 0}, 620 {0x3a1b, 0x30, 0, 0}, {0x3a1e, 0x26, 0, 0}, {0x3a11, 0x60, 0, 0}, 621 {0x3a1f, 0x14, 0, 0}, {0x3008, 0x02, 0, 0}, {0x3c00, 0x04, 0, 300}, 622}; 623 624static const struct reg_value ov5640_setting_low_res[] = { 625 {0x3c07, 0x08, 0, 0}, 626 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0}, 627 {0x3814, 0x31, 0, 0}, 628 {0x3815, 0x31, 0, 0}, 629 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0}, 630 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0}, 631 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0}, 632 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0}, 633 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0}, 634 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, 635 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0}, 636 {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0}, 637}; 638 639static const struct reg_value ov5640_setting_720P_1280_720[] = { 640 {0x3c07, 0x07, 0, 0}, 641 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0}, 642 {0x3814, 0x31, 0, 0}, 643 {0x3815, 0x31, 0, 0}, 644 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0}, 645 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x02, 0, 0}, 646 {0x3a03, 0xe4, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0xbc, 0, 0}, 647 {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x72, 0, 0}, {0x3a0e, 0x01, 0, 0}, 648 {0x3a0d, 0x02, 0, 0}, {0x3a14, 0x02, 0, 0}, {0x3a15, 0xe4, 0, 0}, 649 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, 650 {0x4407, 0x04, 0, 0}, {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0}, 651 {0x3824, 0x04, 0, 0}, {0x5001, 0x83, 0, 0}, 652}; 653 654static const struct reg_value ov5640_setting_1080P_1920_1080[] = { 655 {0x3c07, 0x08, 0, 0}, 656 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0}, 657 {0x3814, 0x11, 0, 0}, 658 {0x3815, 0x11, 0, 0}, 659 {0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0}, 660 {0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0}, 661 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0}, 662 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0}, 663 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0}, 664 {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0}, 665 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0}, 666 {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 0}, 667 {0x3c07, 0x07, 0, 0}, {0x3c08, 0x00, 0, 0}, 668 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0}, 669 {0x3612, 0x2b, 0, 0}, {0x3708, 0x64, 0, 0}, 670 {0x3a02, 0x04, 0, 0}, {0x3a03, 0x60, 0, 0}, {0x3a08, 0x01, 0, 0}, 671 {0x3a09, 0x50, 0, 0}, {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x18, 0, 0}, 672 {0x3a0e, 0x03, 0, 0}, {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x04, 0, 0}, 673 {0x3a15, 0x60, 0, 0}, {0x4407, 0x04, 0, 0}, 674 {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0}, {0x3824, 0x04, 0, 0}, 675 {0x4005, 0x1a, 0, 0}, 676}; 677 678static const struct reg_value ov5640_setting_QSXGA_2592_1944[] = { 679 {0x3c07, 0x08, 0, 0}, 680 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0}, 681 {0x3814, 0x11, 0, 0}, 682 {0x3815, 0x11, 0, 0}, 683 {0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0}, 684 {0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0}, 685 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0}, 686 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0}, 687 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0}, 688 {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0}, 689 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0}, 690 {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 70}, 691}; 692 693static const struct ov5640_mode_info ov5640_mode_data[OV5640_NUM_MODES] = { 694 { 695 /* 160x120 */ 696 .id = OV5640_MODE_QQVGA_160_120, 697 .dn_mode = SUBSAMPLING, 698 .pixel_rate = OV5640_PIXEL_RATE_48M, 699 .width = 160, 700 .height = 120, 701 .dvp_timings = { 702 .analog_crop = { 703 .left = 0, 704 .top = 4, 705 .width = 2624, 706 .height = 1944, 707 }, 708 .crop = { 709 .left = 16, 710 .top = 6, 711 .width = 160, 712 .height = 120, 713 }, 714 .htot = 1896, 715 .vblank_def = 864, 716 }, 717 .csi2_timings = { 718 /* Feed the full valid pixel array to the ISP. */ 719 .analog_crop = { 720 .left = OV5640_PIXEL_ARRAY_LEFT, 721 .top = OV5640_PIXEL_ARRAY_TOP, 722 .width = OV5640_PIXEL_ARRAY_WIDTH, 723 .height = OV5640_PIXEL_ARRAY_HEIGHT, 724 }, 725 /* Maintain a minimum processing margin. */ 726 .crop = { 727 .left = 2, 728 .top = 4, 729 .width = 160, 730 .height = 120, 731 }, 732 .htot = 1600, 733 .vblank_def = 878, 734 }, 735 .reg_data = ov5640_setting_low_res, 736 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res), 737 .max_fps = OV5640_30_FPS, 738 .def_fps = OV5640_30_FPS 739 }, { 740 /* 176x144 */ 741 .id = OV5640_MODE_QCIF_176_144, 742 .dn_mode = SUBSAMPLING, 743 .pixel_rate = OV5640_PIXEL_RATE_48M, 744 .width = 176, 745 .height = 144, 746 .dvp_timings = { 747 .analog_crop = { 748 .left = 0, 749 .top = 4, 750 .width = 2624, 751 .height = 1944, 752 }, 753 .crop = { 754 .left = 16, 755 .top = 6, 756 .width = 176, 757 .height = 144, 758 }, 759 .htot = 1896, 760 .vblank_def = 840, 761 }, 762 .csi2_timings = { 763 /* Feed the full valid pixel array to the ISP. */ 764 .analog_crop = { 765 .left = OV5640_PIXEL_ARRAY_LEFT, 766 .top = OV5640_PIXEL_ARRAY_TOP, 767 .width = OV5640_PIXEL_ARRAY_WIDTH, 768 .height = OV5640_PIXEL_ARRAY_HEIGHT, 769 }, 770 /* Maintain a minimum processing margin. */ 771 .crop = { 772 .left = 2, 773 .top = 4, 774 .width = 176, 775 .height = 144, 776 }, 777 .htot = 1600, 778 .vblank_def = 854, 779 }, 780 .reg_data = ov5640_setting_low_res, 781 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res), 782 .max_fps = OV5640_30_FPS, 783 .def_fps = OV5640_30_FPS 784 }, { 785 /* 320x240 */ 786 .id = OV5640_MODE_QVGA_320_240, 787 .dn_mode = SUBSAMPLING, 788 .width = 320, 789 .height = 240, 790 .pixel_rate = OV5640_PIXEL_RATE_48M, 791 .dvp_timings = { 792 .analog_crop = { 793 .left = 0, 794 .top = 4, 795 .width = 2624, 796 .height = 1944, 797 }, 798 .crop = { 799 .left = 16, 800 .top = 6, 801 .width = 320, 802 .height = 240, 803 }, 804 .htot = 1896, 805 .vblank_def = 744, 806 }, 807 .csi2_timings = { 808 /* Feed the full valid pixel array to the ISP. */ 809 .analog_crop = { 810 .left = OV5640_PIXEL_ARRAY_LEFT, 811 .top = OV5640_PIXEL_ARRAY_TOP, 812 .width = OV5640_PIXEL_ARRAY_WIDTH, 813 .height = OV5640_PIXEL_ARRAY_HEIGHT, 814 }, 815 /* Maintain a minimum processing margin. */ 816 .crop = { 817 .left = 2, 818 .top = 4, 819 .width = 320, 820 .height = 240, 821 }, 822 .htot = 1600, 823 .vblank_def = 760, 824 }, 825 .reg_data = ov5640_setting_low_res, 826 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res), 827 .max_fps = OV5640_30_FPS, 828 .def_fps = OV5640_30_FPS 829 }, { 830 /* 640x480 */ 831 .id = OV5640_MODE_VGA_640_480, 832 .dn_mode = SUBSAMPLING, 833 .pixel_rate = OV5640_PIXEL_RATE_48M, 834 .width = 640, 835 .height = 480, 836 .dvp_timings = { 837 .analog_crop = { 838 .left = 0, 839 .top = 4, 840 .width = 2624, 841 .height = 1944, 842 }, 843 .crop = { 844 .left = 16, 845 .top = 6, 846 .width = 640, 847 .height = 480, 848 }, 849 .htot = 1896, 850 .vblank_def = 600, 851 }, 852 .csi2_timings = { 853 /* Feed the full valid pixel array to the ISP. */ 854 .analog_crop = { 855 .left = OV5640_PIXEL_ARRAY_LEFT, 856 .top = OV5640_PIXEL_ARRAY_TOP, 857 .width = OV5640_PIXEL_ARRAY_WIDTH, 858 .height = OV5640_PIXEL_ARRAY_HEIGHT, 859 }, 860 /* Maintain a minimum processing margin. */ 861 .crop = { 862 .left = 2, 863 .top = 4, 864 .width = 640, 865 .height = 480, 866 }, 867 .htot = 1600, 868 .vblank_def = 520, 869 }, 870 .reg_data = ov5640_setting_low_res, 871 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res), 872 .max_fps = OV5640_60_FPS, 873 .def_fps = OV5640_30_FPS 874 }, { 875 /* 720x480 */ 876 .id = OV5640_MODE_NTSC_720_480, 877 .dn_mode = SUBSAMPLING, 878 .width = 720, 879 .height = 480, 880 .pixel_rate = OV5640_PIXEL_RATE_96M, 881 .dvp_timings = { 882 .analog_crop = { 883 .left = 0, 884 .top = 4, 885 .width = 2624, 886 .height = 1944, 887 }, 888 .crop = { 889 .left = 56, 890 .top = 60, 891 .width = 720, 892 .height = 480, 893 }, 894 .htot = 1896, 895 .vblank_def = 504, 896 }, 897 .csi2_timings = { 898 /* Feed the full valid pixel array to the ISP. */ 899 .analog_crop = { 900 .left = OV5640_PIXEL_ARRAY_LEFT, 901 .top = OV5640_PIXEL_ARRAY_TOP, 902 .width = OV5640_PIXEL_ARRAY_WIDTH, 903 .height = OV5640_PIXEL_ARRAY_HEIGHT, 904 }, 905 .crop = { 906 .left = 56, 907 .top = 60, 908 .width = 720, 909 .height = 480, 910 }, 911 .htot = 1896, 912 .vblank_def = 1206, 913 }, 914 .reg_data = ov5640_setting_low_res, 915 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res), 916 .max_fps = OV5640_30_FPS, 917 .def_fps = OV5640_30_FPS 918 }, { 919 /* 720x576 */ 920 .id = OV5640_MODE_PAL_720_576, 921 .dn_mode = SUBSAMPLING, 922 .width = 720, 923 .height = 576, 924 .pixel_rate = OV5640_PIXEL_RATE_96M, 925 .dvp_timings = { 926 .analog_crop = { 927 .left = 0, 928 .top = 4, 929 .width = 2624, 930 .height = 1944, 931 }, 932 .crop = { 933 .left = 56, 934 .top = 6, 935 .width = 720, 936 .height = 576, 937 }, 938 .htot = 1896, 939 .vblank_def = 408, 940 }, 941 .csi2_timings = { 942 /* Feed the full valid pixel array to the ISP. */ 943 .analog_crop = { 944 .left = OV5640_PIXEL_ARRAY_LEFT, 945 .top = OV5640_PIXEL_ARRAY_TOP, 946 .width = OV5640_PIXEL_ARRAY_WIDTH, 947 .height = OV5640_PIXEL_ARRAY_HEIGHT, 948 }, 949 .crop = { 950 .left = 56, 951 .top = 6, 952 .width = 720, 953 .height = 576, 954 }, 955 .htot = 1896, 956 .vblank_def = 1110, 957 }, 958 .reg_data = ov5640_setting_low_res, 959 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res), 960 .max_fps = OV5640_30_FPS, 961 .def_fps = OV5640_30_FPS 962 }, { 963 /* 1024x768 */ 964 .id = OV5640_MODE_XGA_1024_768, 965 .dn_mode = SUBSAMPLING, 966 .pixel_rate = OV5640_PIXEL_RATE_96M, 967 .width = 1024, 968 .height = 768, 969 .dvp_timings = { 970 .analog_crop = { 971 .left = 0, 972 .top = 4, 973 .width = 2624, 974 .height = 1944, 975 }, 976 .crop = { 977 .left = 16, 978 .top = 6, 979 .width = 1024, 980 .height = 768, 981 }, 982 .htot = 1896, 983 .vblank_def = 312, 984 }, 985 .csi2_timings = { 986 .analog_crop = { 987 .left = 0, 988 .top = 4, 989 .width = OV5640_NATIVE_WIDTH, 990 .height = OV5640_PIXEL_ARRAY_HEIGHT, 991 }, 992 .crop = { 993 .left = 16, 994 .top = 6, 995 .width = 1024, 996 .height = 768, 997 }, 998 .htot = 1896, 999 .vblank_def = 918, 1000 }, 1001 .reg_data = ov5640_setting_low_res, 1002 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res), 1003 .max_fps = OV5640_30_FPS, 1004 .def_fps = OV5640_30_FPS 1005 }, { 1006 /* 1280x720 */ 1007 .id = OV5640_MODE_720P_1280_720, 1008 .dn_mode = SUBSAMPLING, 1009 .pixel_rate = OV5640_PIXEL_RATE_124M, 1010 .width = 1280, 1011 .height = 720, 1012 .dvp_timings = { 1013 .analog_crop = { 1014 .left = 0, 1015 .top = 250, 1016 .width = 2624, 1017 .height = 1456, 1018 }, 1019 .crop = { 1020 .left = 16, 1021 .top = 4, 1022 .width = 1280, 1023 .height = 720, 1024 }, 1025 .htot = 1892, 1026 .vblank_def = 20, 1027 }, 1028 .csi2_timings = { 1029 .analog_crop = { 1030 .left = 0, 1031 .top = 250, 1032 .width = 2624, 1033 .height = 1456, 1034 }, 1035 .crop = { 1036 .left = 16, 1037 .top = 4, 1038 .width = 1280, 1039 .height = 720, 1040 }, 1041 .htot = 1600, 1042 .vblank_def = 560, 1043 }, 1044 .reg_data = ov5640_setting_720P_1280_720, 1045 .reg_data_size = ARRAY_SIZE(ov5640_setting_720P_1280_720), 1046 .max_fps = OV5640_30_FPS, 1047 .def_fps = OV5640_30_FPS 1048 }, { 1049 /* 1920x1080 */ 1050 .id = OV5640_MODE_1080P_1920_1080, 1051 .dn_mode = SCALING, 1052 .pixel_rate = OV5640_PIXEL_RATE_148M, 1053 .width = 1920, 1054 .height = 1080, 1055 .dvp_timings = { 1056 .analog_crop = { 1057 .left = 336, 1058 .top = 434, 1059 .width = 1952, 1060 .height = 1088, 1061 }, 1062 .crop = { 1063 .left = 16, 1064 .top = 4, 1065 .width = 1920, 1066 .height = 1080, 1067 }, 1068 .htot = 2500, 1069 .vblank_def = 40, 1070 }, 1071 .csi2_timings = { 1072 /* Crop the full valid pixel array in the center. */ 1073 .analog_crop = { 1074 .left = 336, 1075 .top = 434, 1076 .width = 1952, 1077 .height = 1088, 1078 }, 1079 /* Maintain a larger processing margins. */ 1080 .crop = { 1081 .left = 16, 1082 .top = 4, 1083 .width = 1920, 1084 .height = 1080, 1085 }, 1086 .htot = 2234, 1087 .vblank_def = 24, 1088 }, 1089 .reg_data = ov5640_setting_1080P_1920_1080, 1090 .reg_data_size = ARRAY_SIZE(ov5640_setting_1080P_1920_1080), 1091 .max_fps = OV5640_30_FPS, 1092 .def_fps = OV5640_30_FPS 1093 }, { 1094 /* 2592x1944 */ 1095 .id = OV5640_MODE_QSXGA_2592_1944, 1096 .dn_mode = SCALING, 1097 .pixel_rate = OV5640_PIXEL_RATE_168M, 1098 .width = OV5640_PIXEL_ARRAY_WIDTH, 1099 .height = OV5640_PIXEL_ARRAY_HEIGHT, 1100 .dvp_timings = { 1101 .analog_crop = { 1102 .left = 0, 1103 .top = 0, 1104 .width = 2624, 1105 .height = 1952, 1106 }, 1107 .crop = { 1108 .left = 16, 1109 .top = 4, 1110 .width = 2592, 1111 .height = 1944, 1112 }, 1113 .htot = 2844, 1114 .vblank_def = 24, 1115 }, 1116 .csi2_timings = { 1117 /* Give more processing margin to full resolution. */ 1118 .analog_crop = { 1119 .left = 0, 1120 .top = 0, 1121 .width = OV5640_NATIVE_WIDTH, 1122 .height = 1952, 1123 }, 1124 .crop = { 1125 .left = 16, 1126 .top = 4, 1127 .width = 2592, 1128 .height = 1944, 1129 }, 1130 .htot = 2844, 1131 .vblank_def = 24, 1132 }, 1133 .reg_data = ov5640_setting_QSXGA_2592_1944, 1134 .reg_data_size = ARRAY_SIZE(ov5640_setting_QSXGA_2592_1944), 1135 .max_fps = OV5640_15_FPS, 1136 .def_fps = OV5640_15_FPS 1137 }, 1138}; 1139 1140static const struct ov5640_timings * 1141ov5640_timings(const struct ov5640_dev *sensor, 1142 const struct ov5640_mode_info *mode) 1143{ 1144 if (ov5640_is_csi2(sensor)) 1145 return &mode->csi2_timings; 1146 1147 return &mode->dvp_timings; 1148} 1149 1150static int ov5640_init_slave_id(struct ov5640_dev *sensor) 1151{ 1152 struct i2c_client *client = sensor->i2c_client; 1153 struct i2c_msg msg; 1154 u8 buf[3]; 1155 int ret; 1156 1157 if (client->addr == OV5640_DEFAULT_SLAVE_ID) 1158 return 0; 1159 1160 buf[0] = OV5640_REG_SLAVE_ID >> 8; 1161 buf[1] = OV5640_REG_SLAVE_ID & 0xff; 1162 buf[2] = client->addr << 1; 1163 1164 msg.addr = OV5640_DEFAULT_SLAVE_ID; 1165 msg.flags = 0; 1166 msg.buf = buf; 1167 msg.len = sizeof(buf); 1168 1169 ret = i2c_transfer(client->adapter, &msg, 1); 1170 if (ret < 0) { 1171 dev_err(&client->dev, "%s: failed with %d\n", __func__, ret); 1172 return ret; 1173 } 1174 1175 return 0; 1176} 1177 1178static int ov5640_write_reg(struct ov5640_dev *sensor, u16 reg, u8 val) 1179{ 1180 struct i2c_client *client = sensor->i2c_client; 1181 struct i2c_msg msg; 1182 u8 buf[3]; 1183 int ret; 1184 1185 buf[0] = reg >> 8; 1186 buf[1] = reg & 0xff; 1187 buf[2] = val; 1188 1189 msg.addr = client->addr; 1190 msg.flags = client->flags; 1191 msg.buf = buf; 1192 msg.len = sizeof(buf); 1193 1194 ret = i2c_transfer(client->adapter, &msg, 1); 1195 if (ret < 0) { 1196 dev_err(&client->dev, "%s: error: reg=%x, val=%x\n", 1197 __func__, reg, val); 1198 return ret; 1199 } 1200 1201 return 0; 1202} 1203 1204static int ov5640_read_reg(struct ov5640_dev *sensor, u16 reg, u8 *val) 1205{ 1206 struct i2c_client *client = sensor->i2c_client; 1207 struct i2c_msg msg[2]; 1208 u8 buf[2]; 1209 int ret; 1210 1211 buf[0] = reg >> 8; 1212 buf[1] = reg & 0xff; 1213 1214 msg[0].addr = client->addr; 1215 msg[0].flags = client->flags; 1216 msg[0].buf = buf; 1217 msg[0].len = sizeof(buf); 1218 1219 msg[1].addr = client->addr; 1220 msg[1].flags = client->flags | I2C_M_RD; 1221 msg[1].buf = buf; 1222 msg[1].len = 1; 1223 1224 ret = i2c_transfer(client->adapter, msg, 2); 1225 if (ret < 0) { 1226 dev_err(&client->dev, "%s: error: reg=%x\n", 1227 __func__, reg); 1228 return ret; 1229 } 1230 1231 *val = buf[0]; 1232 return 0; 1233} 1234 1235static int ov5640_read_reg16(struct ov5640_dev *sensor, u16 reg, u16 *val) 1236{ 1237 u8 hi, lo; 1238 int ret; 1239 1240 ret = ov5640_read_reg(sensor, reg, &hi); 1241 if (ret) 1242 return ret; 1243 ret = ov5640_read_reg(sensor, reg + 1, &lo); 1244 if (ret) 1245 return ret; 1246 1247 *val = ((u16)hi << 8) | (u16)lo; 1248 return 0; 1249} 1250 1251static int ov5640_write_reg16(struct ov5640_dev *sensor, u16 reg, u16 val) 1252{ 1253 int ret; 1254 1255 ret = ov5640_write_reg(sensor, reg, val >> 8); 1256 if (ret) 1257 return ret; 1258 1259 return ov5640_write_reg(sensor, reg + 1, val & 0xff); 1260} 1261 1262static int ov5640_mod_reg(struct ov5640_dev *sensor, u16 reg, 1263 u8 mask, u8 val) 1264{ 1265 u8 readval; 1266 int ret; 1267 1268 ret = ov5640_read_reg(sensor, reg, &readval); 1269 if (ret) 1270 return ret; 1271 1272 readval &= ~mask; 1273 val &= mask; 1274 val |= readval; 1275 1276 return ov5640_write_reg(sensor, reg, val); 1277} 1278 1279/* 1280 * After trying the various combinations, reading various 1281 * documentations spread around the net, and from the various 1282 * feedback, the clock tree is probably as follows: 1283 * 1284 * +--------------+ 1285 * | Ext. Clock | 1286 * +-+------------+ 1287 * | +----------+ 1288 * +->| PLL1 | - reg 0x3036, for the multiplier 1289 * +-+--------+ - reg 0x3037, bits 0-3 for the pre-divider 1290 * | +--------------+ 1291 * +->| System Clock | - reg 0x3035, bits 4-7 1292 * +-+------------+ 1293 * | +--------------+ 1294 * +->| MIPI Divider | - reg 0x3035, bits 0-3 1295 * | +-+------------+ 1296 * | +----------------> MIPI SCLK 1297 * | + +-----+ 1298 * | +->| / 2 |-------> MIPI BIT CLK 1299 * | +-----+ 1300 * | +--------------+ 1301 * +->| PLL Root Div | - reg 0x3037, bit 4 1302 * +-+------------+ 1303 * | +---------+ 1304 * +->| Bit Div | - reg 0x3034, bits 0-3 1305 * +-+-------+ 1306 * | +-------------+ 1307 * +->| SCLK Div | - reg 0x3108, bits 0-1 1308 * | +-+-----------+ 1309 * | +---------------> SCLK 1310 * | +-------------+ 1311 * +->| SCLK 2X Div | - reg 0x3108, bits 2-3 1312 * | +-+-----------+ 1313 * | +---------------> SCLK 2X 1314 * | +-------------+ 1315 * +->| PCLK Div | - reg 0x3108, bits 4-5 1316 * ++------------+ 1317 * + +-----------+ 1318 * +->| P_DIV | - reg 0x3035, bits 0-3 1319 * +-----+-----+ 1320 * +------------> PCLK 1321 * 1322 * There seems to be also constraints: 1323 * - the PLL pre-divider output rate should be in the 4-27MHz range 1324 * - the PLL multiplier output rate should be in the 500-1000MHz range 1325 * - PCLK >= SCLK * 2 in YUV, >= SCLK in Raw or JPEG 1326 */ 1327 1328/* 1329 * This is supposed to be ranging from 1 to 8, but the value is always 1330 * set to 3 in the vendor kernels. 1331 */ 1332#define OV5640_PLL_PREDIV 3 1333 1334#define OV5640_PLL_MULT_MIN 4 1335#define OV5640_PLL_MULT_MAX 252 1336 1337/* 1338 * This is supposed to be ranging from 1 to 16, but the value is 1339 * always set to either 1 or 2 in the vendor kernels. 1340 */ 1341#define OV5640_SYSDIV_MIN 1 1342#define OV5640_SYSDIV_MAX 16 1343 1344/* 1345 * This is supposed to be ranging from 1 to 2, but the value is always 1346 * set to 2 in the vendor kernels. 1347 */ 1348#define OV5640_PLL_ROOT_DIV 2 1349#define OV5640_PLL_CTRL3_PLL_ROOT_DIV_2 BIT(4) 1350 1351/* 1352 * We only supports 8-bit formats at the moment 1353 */ 1354#define OV5640_BIT_DIV 2 1355#define OV5640_PLL_CTRL0_MIPI_MODE_8BIT 0x08 1356 1357/* 1358 * This is supposed to be ranging from 1 to 8, but the value is always 1359 * set to 2 in the vendor kernels. 1360 */ 1361#define OV5640_SCLK_ROOT_DIV 2 1362 1363/* 1364 * This is hardcoded so that the consistency is maintained between SCLK and 1365 * SCLK 2x. 1366 */ 1367#define OV5640_SCLK2X_ROOT_DIV (OV5640_SCLK_ROOT_DIV / 2) 1368 1369/* 1370 * This is supposed to be ranging from 1 to 8, but the value is always 1371 * set to 1 in the vendor kernels. 1372 */ 1373#define OV5640_PCLK_ROOT_DIV 1 1374#define OV5640_PLL_SYS_ROOT_DIVIDER_BYPASS 0x00 1375 1376static unsigned long ov5640_compute_sys_clk(struct ov5640_dev *sensor, 1377 u8 pll_prediv, u8 pll_mult, 1378 u8 sysdiv) 1379{ 1380 unsigned long sysclk = sensor->xclk_freq / pll_prediv * pll_mult; 1381 1382 /* PLL1 output cannot exceed 1GHz. */ 1383 if (sysclk / 1000000 > 1000) 1384 return 0; 1385 1386 return sysclk / sysdiv; 1387} 1388 1389static unsigned long ov5640_calc_sys_clk(struct ov5640_dev *sensor, 1390 unsigned long rate, 1391 u8 *pll_prediv, u8 *pll_mult, 1392 u8 *sysdiv) 1393{ 1394 unsigned long best = ~0; 1395 u8 best_sysdiv = 1, best_mult = 1; 1396 u8 _sysdiv, _pll_mult; 1397 1398 for (_sysdiv = OV5640_SYSDIV_MIN; 1399 _sysdiv <= OV5640_SYSDIV_MAX; 1400 _sysdiv++) { 1401 for (_pll_mult = OV5640_PLL_MULT_MIN; 1402 _pll_mult <= OV5640_PLL_MULT_MAX; 1403 _pll_mult++) { 1404 unsigned long _rate; 1405 1406 /* 1407 * The PLL multiplier cannot be odd if above 1408 * 127. 1409 */ 1410 if (_pll_mult > 127 && (_pll_mult % 2)) 1411 continue; 1412 1413 _rate = ov5640_compute_sys_clk(sensor, 1414 OV5640_PLL_PREDIV, 1415 _pll_mult, _sysdiv); 1416 1417 /* 1418 * We have reached the maximum allowed PLL1 output, 1419 * increase sysdiv. 1420 */ 1421 if (!_rate) 1422 break; 1423 1424 /* 1425 * Prefer rates above the expected clock rate than 1426 * below, even if that means being less precise. 1427 */ 1428 if (_rate < rate) 1429 continue; 1430 1431 if (abs(rate - _rate) < abs(rate - best)) { 1432 best = _rate; 1433 best_sysdiv = _sysdiv; 1434 best_mult = _pll_mult; 1435 } 1436 1437 if (_rate == rate) 1438 goto out; 1439 } 1440 } 1441 1442out: 1443 *sysdiv = best_sysdiv; 1444 *pll_prediv = OV5640_PLL_PREDIV; 1445 *pll_mult = best_mult; 1446 1447 return best; 1448} 1449 1450/* 1451 * ov5640_set_mipi_pclk() - Calculate the clock tree configuration values 1452 * for the MIPI CSI-2 output. 1453 */ 1454static int ov5640_set_mipi_pclk(struct ov5640_dev *sensor) 1455{ 1456 u8 bit_div, mipi_div, pclk_div, sclk_div, sclk2x_div, root_div; 1457 u8 prediv, mult, sysdiv; 1458 unsigned long link_freq; 1459 unsigned long sysclk; 1460 u8 pclk_period; 1461 u32 sample_rate; 1462 u32 num_lanes; 1463 int ret; 1464 1465 /* Use the link freq computed at ov5640_update_pixel_rate() time. */ 1466 link_freq = sensor->current_link_freq; 1467 1468 /* 1469 * - mipi_div - Additional divider for the MIPI lane clock. 1470 * 1471 * Higher link frequencies would make sysclk > 1GHz. 1472 * Keep the sysclk low and do not divide in the MIPI domain. 1473 */ 1474 if (link_freq > OV5640_LINK_RATE_MAX) 1475 mipi_div = 1; 1476 else 1477 mipi_div = 2; 1478 1479 sysclk = link_freq * mipi_div; 1480 ov5640_calc_sys_clk(sensor, sysclk, &prediv, &mult, &sysdiv); 1481 1482 /* 1483 * Adjust PLL parameters to maintain the MIPI_SCLK-to-PCLK ratio. 1484 * 1485 * - root_div = 2 (fixed) 1486 * - bit_div : MIPI 8-bit = 2; MIPI 10-bit = 2.5 1487 * - pclk_div = 1 (fixed) 1488 * - p_div = (2 lanes ? mipi_div : 2 * mipi_div) 1489 * 1490 * This results in the following MIPI_SCLK depending on the number 1491 * of lanes: 1492 * 1493 * - 2 lanes: MIPI_SCLK = (4 or 5) * PCLK 1494 * - 1 lanes: MIPI_SCLK = (8 or 10) * PCLK 1495 */ 1496 root_div = OV5640_PLL_CTRL3_PLL_ROOT_DIV_2; 1497 bit_div = OV5640_PLL_CTRL0_MIPI_MODE_8BIT; 1498 pclk_div = ilog2(OV5640_PCLK_ROOT_DIV); 1499 1500 /* 1501 * Scaler clock: 1502 * - YUV: PCLK >= 2 * SCLK 1503 * - RAW or JPEG: PCLK >= SCLK 1504 * - sclk2x_div = sclk_div / 2 1505 */ 1506 sclk_div = ilog2(OV5640_SCLK_ROOT_DIV); 1507 sclk2x_div = ilog2(OV5640_SCLK2X_ROOT_DIV); 1508 1509 /* 1510 * Set the pixel clock period expressed in ns with 1-bit decimal 1511 * (0x01=0.5ns). 1512 * 1513 * The register is very briefly documented. In the OV5645 datasheet it 1514 * is described as (2 * pclk period), and from testing it seems the 1515 * actual definition is 2 * 8-bit sample period. 1516 * 1517 * 2 * sample_period = (mipi_clk * 2 * num_lanes / bpp) * (bpp / 8) / 2 1518 */ 1519 num_lanes = sensor->ep.bus.mipi_csi2.num_data_lanes; 1520 sample_rate = (link_freq * mipi_div * num_lanes * 2) / 16; 1521 pclk_period = 2000000000UL / sample_rate; 1522 1523 /* Program the clock tree registers. */ 1524 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL0, 0x0f, bit_div); 1525 if (ret) 1526 return ret; 1527 1528 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL1, 0xff, 1529 (sysdiv << 4) | mipi_div); 1530 if (ret) 1531 return ret; 1532 1533 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL2, 0xff, mult); 1534 if (ret) 1535 return ret; 1536 1537 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL3, 0x1f, 1538 root_div | prediv); 1539 if (ret) 1540 return ret; 1541 1542 ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x3f, 1543 (pclk_div << 4) | (sclk2x_div << 2) | sclk_div); 1544 if (ret) 1545 return ret; 1546 1547 return ov5640_write_reg(sensor, OV5640_REG_PCLK_PERIOD, pclk_period); 1548} 1549 1550static u32 ov5640_calc_pixel_rate(struct ov5640_dev *sensor) 1551{ 1552 const struct ov5640_mode_info *mode = sensor->current_mode; 1553 const struct ov5640_timings *timings = &mode->dvp_timings; 1554 u32 rate; 1555 1556 rate = timings->htot * (timings->crop.height + timings->vblank_def); 1557 rate *= ov5640_framerates[sensor->current_fr]; 1558 1559 return rate; 1560} 1561 1562static unsigned long ov5640_calc_pclk(struct ov5640_dev *sensor, 1563 unsigned long rate, 1564 u8 *pll_prediv, u8 *pll_mult, u8 *sysdiv, 1565 u8 *pll_rdiv, u8 *bit_div, u8 *pclk_div) 1566{ 1567 unsigned long _rate = rate * OV5640_PLL_ROOT_DIV * OV5640_BIT_DIV * 1568 OV5640_PCLK_ROOT_DIV; 1569 1570 _rate = ov5640_calc_sys_clk(sensor, _rate, pll_prediv, pll_mult, 1571 sysdiv); 1572 *pll_rdiv = OV5640_PLL_ROOT_DIV; 1573 *bit_div = OV5640_BIT_DIV; 1574 *pclk_div = OV5640_PCLK_ROOT_DIV; 1575 1576 return _rate / *pll_rdiv / *bit_div / *pclk_div; 1577} 1578 1579static int ov5640_set_dvp_pclk(struct ov5640_dev *sensor) 1580{ 1581 u8 prediv, mult, sysdiv, pll_rdiv, bit_div, pclk_div; 1582 u32 rate; 1583 int ret; 1584 1585 rate = ov5640_calc_pixel_rate(sensor); 1586 rate *= ov5640_code_to_bpp(sensor, sensor->fmt.code); 1587 rate /= sensor->ep.bus.parallel.bus_width; 1588 1589 ov5640_calc_pclk(sensor, rate, &prediv, &mult, &sysdiv, &pll_rdiv, 1590 &bit_div, &pclk_div); 1591 1592 if (bit_div == 2) 1593 bit_div = 8; 1594 1595 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL0, 1596 0x0f, bit_div); 1597 if (ret) 1598 return ret; 1599 1600 /* 1601 * We need to set sysdiv according to the clock, and to clear 1602 * the MIPI divider. 1603 */ 1604 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL1, 1605 0xff, sysdiv << 4); 1606 if (ret) 1607 return ret; 1608 1609 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL2, 1610 0xff, mult); 1611 if (ret) 1612 return ret; 1613 1614 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL3, 1615 0x1f, prediv | ((pll_rdiv - 1) << 4)); 1616 if (ret) 1617 return ret; 1618 1619 return ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x30, 1620 (ilog2(pclk_div) << 4)); 1621} 1622 1623/* set JPEG framing sizes */ 1624static int ov5640_set_jpeg_timings(struct ov5640_dev *sensor, 1625 const struct ov5640_mode_info *mode) 1626{ 1627 int ret; 1628 1629 /* 1630 * compression mode 3 timing 1631 * 1632 * Data is transmitted with programmable width (VFIFO_HSIZE). 1633 * No padding done. Last line may have less data. Varying 1634 * number of lines per frame, depending on amount of data. 1635 */ 1636 ret = ov5640_mod_reg(sensor, OV5640_REG_JPG_MODE_SELECT, 0x7, 0x3); 1637 if (ret < 0) 1638 return ret; 1639 1640 ret = ov5640_write_reg16(sensor, OV5640_REG_VFIFO_HSIZE, mode->width); 1641 if (ret < 0) 1642 return ret; 1643 1644 return ov5640_write_reg16(sensor, OV5640_REG_VFIFO_VSIZE, mode->height); 1645} 1646 1647/* download ov5640 settings to sensor through i2c */ 1648static int ov5640_set_timings(struct ov5640_dev *sensor, 1649 const struct ov5640_mode_info *mode) 1650{ 1651 const struct ov5640_timings *timings; 1652 const struct v4l2_rect *analog_crop; 1653 const struct v4l2_rect *crop; 1654 int ret; 1655 1656 if (sensor->fmt.code == MEDIA_BUS_FMT_JPEG_1X8) { 1657 ret = ov5640_set_jpeg_timings(sensor, mode); 1658 if (ret < 0) 1659 return ret; 1660 } 1661 1662 timings = ov5640_timings(sensor, mode); 1663 analog_crop = &timings->analog_crop; 1664 crop = &timings->crop; 1665 1666 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HS, 1667 analog_crop->left); 1668 if (ret < 0) 1669 return ret; 1670 1671 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VS, 1672 analog_crop->top); 1673 if (ret < 0) 1674 return ret; 1675 1676 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HW, 1677 analog_crop->left + analog_crop->width - 1); 1678 if (ret < 0) 1679 return ret; 1680 1681 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VH, 1682 analog_crop->top + analog_crop->height - 1); 1683 if (ret < 0) 1684 return ret; 1685 1686 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HOFFS, crop->left); 1687 if (ret < 0) 1688 return ret; 1689 1690 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VOFFS, crop->top); 1691 if (ret < 0) 1692 return ret; 1693 1694 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPHO, mode->width); 1695 if (ret < 0) 1696 return ret; 1697 1698 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPVO, mode->height); 1699 if (ret < 0) 1700 return ret; 1701 1702 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HTS, timings->htot); 1703 if (ret < 0) 1704 return ret; 1705 1706 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS, 1707 mode->height + timings->vblank_def); 1708 if (ret < 0) 1709 return ret; 1710 1711 return 0; 1712} 1713 1714static void ov5640_load_regs(struct ov5640_dev *sensor, 1715 const struct reg_value *regs, unsigned int regnum) 1716{ 1717 unsigned int i; 1718 u32 delay_ms; 1719 u16 reg_addr; 1720 u8 mask, val; 1721 int ret = 0; 1722 1723 for (i = 0; i < regnum; ++i, ++regs) { 1724 delay_ms = regs->delay_ms; 1725 reg_addr = regs->reg_addr; 1726 val = regs->val; 1727 mask = regs->mask; 1728 1729 /* remain in power down mode for DVP */ 1730 if (regs->reg_addr == OV5640_REG_SYS_CTRL0 && 1731 val == OV5640_REG_SYS_CTRL0_SW_PWUP && 1732 !ov5640_is_csi2(sensor)) 1733 continue; 1734 1735 if (mask) 1736 ret = ov5640_mod_reg(sensor, reg_addr, mask, val); 1737 else 1738 ret = ov5640_write_reg(sensor, reg_addr, val); 1739 if (ret) 1740 break; 1741 1742 if (delay_ms) 1743 usleep_range(1000 * delay_ms, 1000 * delay_ms + 100); 1744 } 1745} 1746 1747static int ov5640_set_autoexposure(struct ov5640_dev *sensor, bool on) 1748{ 1749 return ov5640_mod_reg(sensor, OV5640_REG_AEC_PK_MANUAL, 1750 BIT(0), on ? 0 : BIT(0)); 1751} 1752 1753/* read exposure, in number of line periods */ 1754static int ov5640_get_exposure(struct ov5640_dev *sensor) 1755{ 1756 int exp, ret; 1757 u8 temp; 1758 1759 ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_HI, &temp); 1760 if (ret) 1761 return ret; 1762 exp = ((int)temp & 0x0f) << 16; 1763 ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_MED, &temp); 1764 if (ret) 1765 return ret; 1766 exp |= ((int)temp << 8); 1767 ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_LO, &temp); 1768 if (ret) 1769 return ret; 1770 exp |= (int)temp; 1771 1772 return exp >> 4; 1773} 1774 1775/* write exposure, given number of line periods */ 1776static int ov5640_set_exposure(struct ov5640_dev *sensor, u32 exposure) 1777{ 1778 int ret; 1779 1780 exposure <<= 4; 1781 1782 ret = ov5640_write_reg(sensor, 1783 OV5640_REG_AEC_PK_EXPOSURE_LO, 1784 exposure & 0xff); 1785 if (ret) 1786 return ret; 1787 ret = ov5640_write_reg(sensor, 1788 OV5640_REG_AEC_PK_EXPOSURE_MED, 1789 (exposure >> 8) & 0xff); 1790 if (ret) 1791 return ret; 1792 return ov5640_write_reg(sensor, 1793 OV5640_REG_AEC_PK_EXPOSURE_HI, 1794 (exposure >> 16) & 0x0f); 1795} 1796 1797static int ov5640_get_gain(struct ov5640_dev *sensor) 1798{ 1799 u16 gain; 1800 int ret; 1801 1802 ret = ov5640_read_reg16(sensor, OV5640_REG_AEC_PK_REAL_GAIN, &gain); 1803 if (ret) 1804 return ret; 1805 1806 return gain & 0x3ff; 1807} 1808 1809static int ov5640_set_gain(struct ov5640_dev *sensor, int gain) 1810{ 1811 return ov5640_write_reg16(sensor, OV5640_REG_AEC_PK_REAL_GAIN, 1812 (u16)gain & 0x3ff); 1813} 1814 1815static int ov5640_set_autogain(struct ov5640_dev *sensor, bool on) 1816{ 1817 return ov5640_mod_reg(sensor, OV5640_REG_AEC_PK_MANUAL, 1818 BIT(1), on ? 0 : BIT(1)); 1819} 1820 1821static int ov5640_set_stream_dvp(struct ov5640_dev *sensor, bool on) 1822{ 1823 return ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0, on ? 1824 OV5640_REG_SYS_CTRL0_SW_PWUP : 1825 OV5640_REG_SYS_CTRL0_SW_PWDN); 1826} 1827 1828static int ov5640_set_stream_mipi(struct ov5640_dev *sensor, bool on) 1829{ 1830 int ret; 1831 1832 /* 1833 * Enable/disable the MIPI interface 1834 * 1835 * 0x300e = on ? 0x45 : 0x40 1836 * 1837 * FIXME: the sensor manual (version 2.03) reports 1838 * [7:5] = 000 : 1 data lane mode 1839 * [7:5] = 001 : 2 data lanes mode 1840 * But this settings do not work, while the following ones 1841 * have been validated for 2 data lanes mode. 1842 * 1843 * [7:5] = 010 : 2 data lanes mode 1844 * [4] = 0 : Power up MIPI HS Tx 1845 * [3] = 0 : Power up MIPI LS Rx 1846 * [2] = 1/0 : MIPI interface enable/disable 1847 * [1:0] = 01/00: FIXME: 'debug' 1848 */ 1849 ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 1850 on ? 0x45 : 0x40); 1851 if (ret) 1852 return ret; 1853 1854 return ov5640_write_reg(sensor, OV5640_REG_FRAME_CTRL01, 1855 on ? 0x00 : 0x0f); 1856} 1857 1858static int ov5640_get_sysclk(struct ov5640_dev *sensor) 1859{ 1860 /* calculate sysclk */ 1861 u32 xvclk = sensor->xclk_freq / 10000; 1862 u32 multiplier, prediv, VCO, sysdiv, pll_rdiv; 1863 u32 sclk_rdiv_map[] = {1, 2, 4, 8}; 1864 u32 bit_div2x = 1, sclk_rdiv, sysclk; 1865 u8 temp1, temp2; 1866 int ret; 1867 1868 ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL0, &temp1); 1869 if (ret) 1870 return ret; 1871 temp2 = temp1 & 0x0f; 1872 if (temp2 == 8 || temp2 == 10) 1873 bit_div2x = temp2 / 2; 1874 1875 ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL1, &temp1); 1876 if (ret) 1877 return ret; 1878 sysdiv = temp1 >> 4; 1879 if (sysdiv == 0) 1880 sysdiv = 16; 1881 1882 ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL2, &temp1); 1883 if (ret) 1884 return ret; 1885 multiplier = temp1; 1886 1887 ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL3, &temp1); 1888 if (ret) 1889 return ret; 1890 prediv = temp1 & 0x0f; 1891 pll_rdiv = ((temp1 >> 4) & 0x01) + 1; 1892 1893 ret = ov5640_read_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, &temp1); 1894 if (ret) 1895 return ret; 1896 temp2 = temp1 & 0x03; 1897 sclk_rdiv = sclk_rdiv_map[temp2]; 1898 1899 if (!prediv || !sysdiv || !pll_rdiv || !bit_div2x) 1900 return -EINVAL; 1901 1902 VCO = xvclk * multiplier / prediv; 1903 1904 sysclk = VCO / sysdiv / pll_rdiv * 2 / bit_div2x / sclk_rdiv; 1905 1906 return sysclk; 1907} 1908 1909static int ov5640_set_night_mode(struct ov5640_dev *sensor) 1910{ 1911 /* read HTS from register settings */ 1912 u8 mode; 1913 int ret; 1914 1915 ret = ov5640_read_reg(sensor, OV5640_REG_AEC_CTRL00, &mode); 1916 if (ret) 1917 return ret; 1918 mode &= 0xfb; 1919 return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL00, mode); 1920} 1921 1922static int ov5640_get_hts(struct ov5640_dev *sensor) 1923{ 1924 /* read HTS from register settings */ 1925 u16 hts; 1926 int ret; 1927 1928 ret = ov5640_read_reg16(sensor, OV5640_REG_TIMING_HTS, &hts); 1929 if (ret) 1930 return ret; 1931 return hts; 1932} 1933 1934static int ov5640_get_vts(struct ov5640_dev *sensor) 1935{ 1936 u16 vts; 1937 int ret; 1938 1939 ret = ov5640_read_reg16(sensor, OV5640_REG_TIMING_VTS, &vts); 1940 if (ret) 1941 return ret; 1942 return vts; 1943} 1944 1945static int ov5640_set_vts(struct ov5640_dev *sensor, int vts) 1946{ 1947 return ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS, vts); 1948} 1949 1950static int ov5640_get_light_freq(struct ov5640_dev *sensor) 1951{ 1952 /* get banding filter value */ 1953 int ret, light_freq = 0; 1954 u8 temp, temp1; 1955 1956 ret = ov5640_read_reg(sensor, OV5640_REG_HZ5060_CTRL01, &temp); 1957 if (ret) 1958 return ret; 1959 1960 if (temp & 0x80) { 1961 /* manual */ 1962 ret = ov5640_read_reg(sensor, OV5640_REG_HZ5060_CTRL00, 1963 &temp1); 1964 if (ret) 1965 return ret; 1966 if (temp1 & 0x04) { 1967 /* 50Hz */ 1968 light_freq = 50; 1969 } else { 1970 /* 60Hz */ 1971 light_freq = 60; 1972 } 1973 } else { 1974 /* auto */ 1975 ret = ov5640_read_reg(sensor, OV5640_REG_SIGMADELTA_CTRL0C, 1976 &temp1); 1977 if (ret) 1978 return ret; 1979 1980 if (temp1 & 0x01) { 1981 /* 50Hz */ 1982 light_freq = 50; 1983 } else { 1984 /* 60Hz */ 1985 light_freq = 60; 1986 } 1987 } 1988 1989 return light_freq; 1990} 1991 1992static int ov5640_set_bandingfilter(struct ov5640_dev *sensor) 1993{ 1994 u32 band_step60, max_band60, band_step50, max_band50, prev_vts; 1995 int ret; 1996 1997 /* read preview PCLK */ 1998 ret = ov5640_get_sysclk(sensor); 1999 if (ret < 0) 2000 return ret; 2001 if (ret == 0) 2002 return -EINVAL; 2003 sensor->prev_sysclk = ret; 2004 /* read preview HTS */ 2005 ret = ov5640_get_hts(sensor); 2006 if (ret < 0) 2007 return ret; 2008 if (ret == 0) 2009 return -EINVAL; 2010 sensor->prev_hts = ret; 2011 2012 /* read preview VTS */ 2013 ret = ov5640_get_vts(sensor); 2014 if (ret < 0) 2015 return ret; 2016 prev_vts = ret; 2017 2018 /* calculate banding filter */ 2019 /* 60Hz */ 2020 band_step60 = sensor->prev_sysclk * 100 / sensor->prev_hts * 100 / 120; 2021 ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B60_STEP, band_step60); 2022 if (ret) 2023 return ret; 2024 if (!band_step60) 2025 return -EINVAL; 2026 max_band60 = (int)((prev_vts - 4) / band_step60); 2027 ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0D, max_band60); 2028 if (ret) 2029 return ret; 2030 2031 /* 50Hz */ 2032 band_step50 = sensor->prev_sysclk * 100 / sensor->prev_hts; 2033 ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B50_STEP, band_step50); 2034 if (ret) 2035 return ret; 2036 if (!band_step50) 2037 return -EINVAL; 2038 max_band50 = (int)((prev_vts - 4) / band_step50); 2039 return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0E, max_band50); 2040} 2041 2042static int ov5640_set_ae_target(struct ov5640_dev *sensor, int target) 2043{ 2044 /* stable in high */ 2045 u32 fast_high, fast_low; 2046 int ret; 2047 2048 sensor->ae_low = target * 23 / 25; /* 0.92 */ 2049 sensor->ae_high = target * 27 / 25; /* 1.08 */ 2050 2051 fast_high = sensor->ae_high << 1; 2052 if (fast_high > 255) 2053 fast_high = 255; 2054 2055 fast_low = sensor->ae_low >> 1; 2056 2057 ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0F, sensor->ae_high); 2058 if (ret) 2059 return ret; 2060 ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL10, sensor->ae_low); 2061 if (ret) 2062 return ret; 2063 ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1B, sensor->ae_high); 2064 if (ret) 2065 return ret; 2066 ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1E, sensor->ae_low); 2067 if (ret) 2068 return ret; 2069 ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL11, fast_high); 2070 if (ret) 2071 return ret; 2072 return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1F, fast_low); 2073} 2074 2075static int ov5640_get_binning(struct ov5640_dev *sensor) 2076{ 2077 u8 temp; 2078 int ret; 2079 2080 ret = ov5640_read_reg(sensor, OV5640_REG_TIMING_TC_REG21, &temp); 2081 if (ret) 2082 return ret; 2083 2084 return temp & BIT(0); 2085} 2086 2087static int ov5640_set_binning(struct ov5640_dev *sensor, bool enable) 2088{ 2089 int ret; 2090 2091 /* 2092 * TIMING TC REG21: 2093 * - [0]: Horizontal binning enable 2094 */ 2095 ret = ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21, 2096 BIT(0), enable ? BIT(0) : 0); 2097 if (ret) 2098 return ret; 2099 /* 2100 * TIMING TC REG20: 2101 * - [0]: Undocumented, but hardcoded init sequences 2102 * are always setting REG21/REG20 bit 0 to same value... 2103 */ 2104 return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20, 2105 BIT(0), enable ? BIT(0) : 0); 2106} 2107 2108static int ov5640_set_virtual_channel(struct ov5640_dev *sensor) 2109{ 2110 struct i2c_client *client = sensor->i2c_client; 2111 u8 temp, channel = virtual_channel; 2112 int ret; 2113 2114 if (channel > 3) { 2115 dev_err(&client->dev, 2116 "%s: wrong virtual_channel parameter, expected (0..3), got %d\n", 2117 __func__, channel); 2118 return -EINVAL; 2119 } 2120 2121 ret = ov5640_read_reg(sensor, OV5640_REG_DEBUG_MODE, &temp); 2122 if (ret) 2123 return ret; 2124 temp &= ~(3 << 6); 2125 temp |= (channel << 6); 2126 return ov5640_write_reg(sensor, OV5640_REG_DEBUG_MODE, temp); 2127} 2128 2129static const struct ov5640_mode_info * 2130ov5640_find_mode(struct ov5640_dev *sensor, int width, int height, bool nearest) 2131{ 2132 const struct ov5640_mode_info *mode; 2133 2134 mode = v4l2_find_nearest_size(ov5640_mode_data, 2135 ARRAY_SIZE(ov5640_mode_data), 2136 width, height, width, height); 2137 2138 if (!mode || 2139 (!nearest && 2140 (mode->width != width || mode->height != height))) 2141 return NULL; 2142 2143 return mode; 2144} 2145 2146/* 2147 * sensor changes between scaling and subsampling, go through 2148 * exposure calculation 2149 */ 2150static int ov5640_set_mode_exposure_calc(struct ov5640_dev *sensor, 2151 const struct ov5640_mode_info *mode) 2152{ 2153 u32 prev_shutter, prev_gain16; 2154 u32 cap_shutter, cap_gain16; 2155 u32 cap_sysclk, cap_hts, cap_vts; 2156 u32 light_freq, cap_bandfilt, cap_maxband; 2157 u32 cap_gain16_shutter; 2158 u8 average; 2159 int ret; 2160 2161 if (!mode->reg_data) 2162 return -EINVAL; 2163 2164 /* read preview shutter */ 2165 ret = ov5640_get_exposure(sensor); 2166 if (ret < 0) 2167 return ret; 2168 prev_shutter = ret; 2169 ret = ov5640_get_binning(sensor); 2170 if (ret < 0) 2171 return ret; 2172 if (ret && mode->id != OV5640_MODE_720P_1280_720 && 2173 mode->id != OV5640_MODE_1080P_1920_1080) 2174 prev_shutter *= 2; 2175 2176 /* read preview gain */ 2177 ret = ov5640_get_gain(sensor); 2178 if (ret < 0) 2179 return ret; 2180 prev_gain16 = ret; 2181 2182 /* get average */ 2183 ret = ov5640_read_reg(sensor, OV5640_REG_AVG_READOUT, &average); 2184 if (ret) 2185 return ret; 2186 2187 /* turn off night mode for capture */ 2188 ret = ov5640_set_night_mode(sensor); 2189 if (ret < 0) 2190 return ret; 2191 2192 /* Write capture setting */ 2193 ov5640_load_regs(sensor, mode->reg_data, mode->reg_data_size); 2194 ret = ov5640_set_timings(sensor, mode); 2195 if (ret < 0) 2196 return ret; 2197 2198 /* read capture VTS */ 2199 ret = ov5640_get_vts(sensor); 2200 if (ret < 0) 2201 return ret; 2202 cap_vts = ret; 2203 ret = ov5640_get_hts(sensor); 2204 if (ret < 0) 2205 return ret; 2206 if (ret == 0) 2207 return -EINVAL; 2208 cap_hts = ret; 2209 2210 ret = ov5640_get_sysclk(sensor); 2211 if (ret < 0) 2212 return ret; 2213 if (ret == 0) 2214 return -EINVAL; 2215 cap_sysclk = ret; 2216 2217 /* calculate capture banding filter */ 2218 ret = ov5640_get_light_freq(sensor); 2219 if (ret < 0) 2220 return ret; 2221 light_freq = ret; 2222 2223 if (light_freq == 60) { 2224 /* 60Hz */ 2225 cap_bandfilt = cap_sysclk * 100 / cap_hts * 100 / 120; 2226 } else { 2227 /* 50Hz */ 2228 cap_bandfilt = cap_sysclk * 100 / cap_hts; 2229 } 2230 2231 if (!sensor->prev_sysclk) { 2232 ret = ov5640_get_sysclk(sensor); 2233 if (ret < 0) 2234 return ret; 2235 if (ret == 0) 2236 return -EINVAL; 2237 sensor->prev_sysclk = ret; 2238 } 2239 2240 if (!cap_bandfilt) 2241 return -EINVAL; 2242 2243 cap_maxband = (int)((cap_vts - 4) / cap_bandfilt); 2244 2245 /* calculate capture shutter/gain16 */ 2246 if (average > sensor->ae_low && average < sensor->ae_high) { 2247 /* in stable range */ 2248 cap_gain16_shutter = 2249 prev_gain16 * prev_shutter * 2250 cap_sysclk / sensor->prev_sysclk * 2251 sensor->prev_hts / cap_hts * 2252 sensor->ae_target / average; 2253 } else { 2254 cap_gain16_shutter = 2255 prev_gain16 * prev_shutter * 2256 cap_sysclk / sensor->prev_sysclk * 2257 sensor->prev_hts / cap_hts; 2258 } 2259 2260 /* gain to shutter */ 2261 if (cap_gain16_shutter < (cap_bandfilt * 16)) { 2262 /* shutter < 1/100 */ 2263 cap_shutter = cap_gain16_shutter / 16; 2264 if (cap_shutter < 1) 2265 cap_shutter = 1; 2266 2267 cap_gain16 = cap_gain16_shutter / cap_shutter; 2268 if (cap_gain16 < 16) 2269 cap_gain16 = 16; 2270 } else { 2271 if (cap_gain16_shutter > (cap_bandfilt * cap_maxband * 16)) { 2272 /* exposure reach max */ 2273 cap_shutter = cap_bandfilt * cap_maxband; 2274 if (!cap_shutter) 2275 return -EINVAL; 2276 2277 cap_gain16 = cap_gain16_shutter / cap_shutter; 2278 } else { 2279 /* 1/100 < (cap_shutter = n/100) =< max */ 2280 cap_shutter = 2281 ((int)(cap_gain16_shutter / 16 / cap_bandfilt)) 2282 * cap_bandfilt; 2283 if (!cap_shutter) 2284 return -EINVAL; 2285 2286 cap_gain16 = cap_gain16_shutter / cap_shutter; 2287 } 2288 } 2289 2290 /* set capture gain */ 2291 ret = ov5640_set_gain(sensor, cap_gain16); 2292 if (ret) 2293 return ret; 2294 2295 /* write capture shutter */ 2296 if (cap_shutter > (cap_vts - 4)) { 2297 cap_vts = cap_shutter + 4; 2298 ret = ov5640_set_vts(sensor, cap_vts); 2299 if (ret < 0) 2300 return ret; 2301 } 2302 2303 /* set exposure */ 2304 return ov5640_set_exposure(sensor, cap_shutter); 2305} 2306 2307/* 2308 * if sensor changes inside scaling or subsampling 2309 * change mode directly 2310 */ 2311static int ov5640_set_mode_direct(struct ov5640_dev *sensor, 2312 const struct ov5640_mode_info *mode) 2313{ 2314 if (!mode->reg_data) 2315 return -EINVAL; 2316 2317 /* Write capture setting */ 2318 ov5640_load_regs(sensor, mode->reg_data, mode->reg_data_size); 2319 return ov5640_set_timings(sensor, mode); 2320} 2321 2322static int ov5640_set_mode(struct ov5640_dev *sensor) 2323{ 2324 const struct ov5640_mode_info *mode = sensor->current_mode; 2325 const struct ov5640_mode_info *orig_mode = sensor->last_mode; 2326 enum ov5640_downsize_mode dn_mode, orig_dn_mode; 2327 bool auto_gain = sensor->ctrls.auto_gain->val == 1; 2328 bool auto_exp = sensor->ctrls.auto_exp->val == V4L2_EXPOSURE_AUTO; 2329 int ret; 2330 2331 dn_mode = mode->dn_mode; 2332 orig_dn_mode = orig_mode->dn_mode; 2333 2334 /* auto gain and exposure must be turned off when changing modes */ 2335 if (auto_gain) { 2336 ret = ov5640_set_autogain(sensor, false); 2337 if (ret) 2338 return ret; 2339 } 2340 2341 if (auto_exp) { 2342 ret = ov5640_set_autoexposure(sensor, false); 2343 if (ret) 2344 goto restore_auto_gain; 2345 } 2346 2347 if (ov5640_is_csi2(sensor)) 2348 ret = ov5640_set_mipi_pclk(sensor); 2349 else 2350 ret = ov5640_set_dvp_pclk(sensor); 2351 if (ret < 0) 2352 return 0; 2353 2354 if ((dn_mode == SUBSAMPLING && orig_dn_mode == SCALING) || 2355 (dn_mode == SCALING && orig_dn_mode == SUBSAMPLING)) { 2356 /* 2357 * change between subsampling and scaling 2358 * go through exposure calculation 2359 */ 2360 ret = ov5640_set_mode_exposure_calc(sensor, mode); 2361 } else { 2362 /* 2363 * change inside subsampling or scaling 2364 * download firmware directly 2365 */ 2366 ret = ov5640_set_mode_direct(sensor, mode); 2367 } 2368 if (ret < 0) 2369 goto restore_auto_exp_gain; 2370 2371 /* restore auto gain and exposure */ 2372 if (auto_gain) 2373 ov5640_set_autogain(sensor, true); 2374 if (auto_exp) 2375 ov5640_set_autoexposure(sensor, true); 2376 2377 ret = ov5640_set_binning(sensor, dn_mode != SCALING); 2378 if (ret < 0) 2379 return ret; 2380 ret = ov5640_set_ae_target(sensor, sensor->ae_target); 2381 if (ret < 0) 2382 return ret; 2383 ret = ov5640_get_light_freq(sensor); 2384 if (ret < 0) 2385 return ret; 2386 ret = ov5640_set_bandingfilter(sensor); 2387 if (ret < 0) 2388 return ret; 2389 ret = ov5640_set_virtual_channel(sensor); 2390 if (ret < 0) 2391 return ret; 2392 2393 sensor->pending_mode_change = false; 2394 sensor->last_mode = mode; 2395 2396 return 0; 2397 2398restore_auto_exp_gain: 2399 if (auto_exp) 2400 ov5640_set_autoexposure(sensor, true); 2401restore_auto_gain: 2402 if (auto_gain) 2403 ov5640_set_autogain(sensor, true); 2404 2405 return ret; 2406} 2407 2408static int ov5640_set_framefmt(struct ov5640_dev *sensor, 2409 struct v4l2_mbus_framefmt *format); 2410 2411/* restore the last set video mode after chip power-on */ 2412static int ov5640_restore_mode(struct ov5640_dev *sensor) 2413{ 2414 int ret; 2415 2416 /* first load the initial register values */ 2417 ov5640_load_regs(sensor, ov5640_init_setting, 2418 ARRAY_SIZE(ov5640_init_setting)); 2419 2420 ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x3f, 2421 (ilog2(OV5640_SCLK2X_ROOT_DIV) << 2) | 2422 ilog2(OV5640_SCLK_ROOT_DIV)); 2423 if (ret) 2424 return ret; 2425 2426 /* now restore the last capture mode */ 2427 ret = ov5640_set_mode(sensor); 2428 if (ret < 0) 2429 return ret; 2430 2431 return ov5640_set_framefmt(sensor, &sensor->fmt); 2432} 2433 2434static void ov5640_power(struct ov5640_dev *sensor, bool enable) 2435{ 2436 gpiod_set_value_cansleep(sensor->pwdn_gpio, enable ? 0 : 1); 2437} 2438 2439/* 2440 * From section 2.7 power up sequence: 2441 * t0 + t1 + t2 >= 5ms Delay from DOVDD stable to PWDN pull down 2442 * t3 >= 1ms Delay from PWDN pull down to RESETB pull up 2443 * t4 >= 20ms Delay from RESETB pull up to SCCB (i2c) stable 2444 * 2445 * Some modules don't expose RESETB/PWDN pins directly, instead providing a 2446 * "PWUP" GPIO which is wired through appropriate delays and inverters to the 2447 * pins. 2448 * 2449 * In such cases, this gpio should be mapped to pwdn_gpio in the driver, and we 2450 * should still toggle the pwdn_gpio below with the appropriate delays, while 2451 * the calls to reset_gpio will be ignored. 2452 */ 2453static void ov5640_powerup_sequence(struct ov5640_dev *sensor) 2454{ 2455 if (sensor->pwdn_gpio) { 2456 gpiod_set_value_cansleep(sensor->reset_gpio, 1); 2457 2458 /* camera power cycle */ 2459 ov5640_power(sensor, false); 2460 usleep_range(5000, 10000); /* t2 */ 2461 ov5640_power(sensor, true); 2462 usleep_range(1000, 2000); /* t3 */ 2463 2464 gpiod_set_value_cansleep(sensor->reset_gpio, 0); 2465 } else { 2466 /* software reset */ 2467 ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0, 2468 OV5640_REG_SYS_CTRL0_SW_RST); 2469 } 2470 usleep_range(20000, 25000); /* t4 */ 2471 2472 /* 2473 * software standby: allows registers programming; 2474 * exit at restore_mode() for CSI, s_stream(1) for DVP 2475 */ 2476 ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0, 2477 OV5640_REG_SYS_CTRL0_SW_PWDN); 2478} 2479 2480static int ov5640_set_power_on(struct ov5640_dev *sensor) 2481{ 2482 struct i2c_client *client = sensor->i2c_client; 2483 int ret; 2484 2485 ret = clk_prepare_enable(sensor->xclk); 2486 if (ret) { 2487 dev_err(&client->dev, "%s: failed to enable clock\n", 2488 __func__); 2489 return ret; 2490 } 2491 2492 ret = regulator_bulk_enable(OV5640_NUM_SUPPLIES, 2493 sensor->supplies); 2494 if (ret) { 2495 dev_err(&client->dev, "%s: failed to enable regulators\n", 2496 __func__); 2497 goto xclk_off; 2498 } 2499 2500 ov5640_powerup_sequence(sensor); 2501 2502 ret = ov5640_init_slave_id(sensor); 2503 if (ret) 2504 goto power_off; 2505 2506 return 0; 2507 2508power_off: 2509 ov5640_power(sensor, false); 2510 regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies); 2511xclk_off: 2512 clk_disable_unprepare(sensor->xclk); 2513 return ret; 2514} 2515 2516static void ov5640_set_power_off(struct ov5640_dev *sensor) 2517{ 2518 ov5640_power(sensor, false); 2519 regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies); 2520 clk_disable_unprepare(sensor->xclk); 2521} 2522 2523static int ov5640_set_power_mipi(struct ov5640_dev *sensor, bool on) 2524{ 2525 int ret; 2526 2527 if (!on) { 2528 /* Reset MIPI bus settings to their default values. */ 2529 ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x58); 2530 ov5640_write_reg(sensor, OV5640_REG_MIPI_CTRL00, 0x04); 2531 ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT00, 0x00); 2532 return 0; 2533 } 2534 2535 /* 2536 * Power up MIPI HS Tx and LS Rx; 2 data lanes mode 2537 * 2538 * 0x300e = 0x40 2539 * [7:5] = 010 : 2 data lanes mode (see FIXME note in 2540 * "ov5640_set_stream_mipi()") 2541 * [4] = 0 : Power up MIPI HS Tx 2542 * [3] = 0 : Power up MIPI LS Rx 2543 * [2] = 1 : MIPI interface enabled 2544 */ 2545 ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x44); 2546 if (ret) 2547 return ret; 2548 2549 /* 2550 * Gate clock and set LP11 in 'no packets mode' (idle) 2551 * 2552 * 0x4800 = 0x24 2553 * [5] = 1 : Gate clock when 'no packets' 2554 * [2] = 1 : MIPI bus in LP11 when 'no packets' 2555 */ 2556 ret = ov5640_write_reg(sensor, OV5640_REG_MIPI_CTRL00, 0x24); 2557 if (ret) 2558 return ret; 2559 2560 /* 2561 * Set data lanes and clock in LP11 when 'sleeping' 2562 * 2563 * 0x3019 = 0x70 2564 * [6] = 1 : MIPI data lane 2 in LP11 when 'sleeping' 2565 * [5] = 1 : MIPI data lane 1 in LP11 when 'sleeping' 2566 * [4] = 1 : MIPI clock lane in LP11 when 'sleeping' 2567 */ 2568 ret = ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT00, 0x70); 2569 if (ret) 2570 return ret; 2571 2572 /* Give lanes some time to coax into LP11 state. */ 2573 usleep_range(500, 1000); 2574 2575 return 0; 2576} 2577 2578static int ov5640_set_power_dvp(struct ov5640_dev *sensor, bool on) 2579{ 2580 unsigned int flags = sensor->ep.bus.parallel.flags; 2581 bool bt656 = sensor->ep.bus_type == V4L2_MBUS_BT656; 2582 u8 polarities = 0; 2583 int ret; 2584 2585 if (!on) { 2586 /* Reset settings to their default values. */ 2587 ov5640_write_reg(sensor, OV5640_REG_CCIR656_CTRL00, 0x00); 2588 ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x58); 2589 ov5640_write_reg(sensor, OV5640_REG_POLARITY_CTRL00, 0x20); 2590 ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE01, 0x00); 2591 ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE02, 0x00); 2592 return 0; 2593 } 2594 2595 /* 2596 * Note about parallel port configuration. 2597 * 2598 * When configured in parallel mode, the OV5640 will 2599 * output 10 bits data on DVP data lines [9:0]. 2600 * If only 8 bits data are wanted, the 8 bits data lines 2601 * of the camera interface must be physically connected 2602 * on the DVP data lines [9:2]. 2603 * 2604 * Control lines polarity can be configured through 2605 * devicetree endpoint control lines properties. 2606 * If no endpoint control lines properties are set, 2607 * polarity will be as below: 2608 * - VSYNC: active high 2609 * - HREF: active low 2610 * - PCLK: active low 2611 * 2612 * VSYNC & HREF are not configured if BT656 bus mode is selected 2613 */ 2614 2615 /* 2616 * BT656 embedded synchronization configuration 2617 * 2618 * CCIR656 CTRL00 2619 * - [7]: SYNC code selection (0: auto generate sync code, 2620 * 1: sync code from regs 0x4732-0x4735) 2621 * - [6]: f value in CCIR656 SYNC code when fixed f value 2622 * - [5]: Fixed f value 2623 * - [4:3]: Blank toggle data options (00: data=1'h040/1'h200, 2624 * 01: data from regs 0x4736-0x4738, 10: always keep 0) 2625 * - [1]: Clip data disable 2626 * - [0]: CCIR656 mode enable 2627 * 2628 * Default CCIR656 SAV/EAV mode with default codes 2629 * SAV=0xff000080 & EAV=0xff00009d is enabled here with settings: 2630 * - CCIR656 mode enable 2631 * - auto generation of sync codes 2632 * - blank toggle data 1'h040/1'h200 2633 * - clip reserved data (0x00 & 0xff changed to 0x01 & 0xfe) 2634 */ 2635 ret = ov5640_write_reg(sensor, OV5640_REG_CCIR656_CTRL00, 2636 bt656 ? 0x01 : 0x00); 2637 if (ret) 2638 return ret; 2639 2640 /* 2641 * configure parallel port control lines polarity 2642 * 2643 * POLARITY CTRL0 2644 * - [5]: PCLK polarity (0: active low, 1: active high) 2645 * - [1]: HREF polarity (0: active low, 1: active high) 2646 * - [0]: VSYNC polarity (mismatch here between 2647 * datasheet and hardware, 0 is active high 2648 * and 1 is active low...) 2649 */ 2650 if (!bt656) { 2651 if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) 2652 polarities |= BIT(1); 2653 if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) 2654 polarities |= BIT(0); 2655 } 2656 if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING) 2657 polarities |= BIT(5); 2658 2659 ret = ov5640_write_reg(sensor, OV5640_REG_POLARITY_CTRL00, polarities); 2660 if (ret) 2661 return ret; 2662 2663 /* 2664 * powerdown MIPI TX/RX PHY & enable DVP 2665 * 2666 * MIPI CONTROL 00 2667 * [4] = 1 : Power down MIPI HS Tx 2668 * [3] = 1 : Power down MIPI LS Rx 2669 * [2] = 0 : DVP enable (MIPI disable) 2670 */ 2671 ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x18); 2672 if (ret) 2673 return ret; 2674 2675 /* 2676 * enable VSYNC/HREF/PCLK DVP control lines 2677 * & D[9:6] DVP data lines 2678 * 2679 * PAD OUTPUT ENABLE 01 2680 * - 6: VSYNC output enable 2681 * - 5: HREF output enable 2682 * - 4: PCLK output enable 2683 * - [3:0]: D[9:6] output enable 2684 */ 2685 ret = ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE01, 2686 bt656 ? 0x1f : 0x7f); 2687 if (ret) 2688 return ret; 2689 2690 /* 2691 * enable D[5:0] DVP data lines 2692 * 2693 * PAD OUTPUT ENABLE 02 2694 * - [7:2]: D[5:0] output enable 2695 */ 2696 return ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE02, 0xfc); 2697} 2698 2699static int ov5640_set_power(struct ov5640_dev *sensor, bool on) 2700{ 2701 int ret = 0; 2702 2703 if (on) { 2704 ret = ov5640_set_power_on(sensor); 2705 if (ret) 2706 return ret; 2707 2708 ret = ov5640_restore_mode(sensor); 2709 if (ret) 2710 goto power_off; 2711 } 2712 2713 if (sensor->ep.bus_type == V4L2_MBUS_CSI2_DPHY) 2714 ret = ov5640_set_power_mipi(sensor, on); 2715 else 2716 ret = ov5640_set_power_dvp(sensor, on); 2717 if (ret) 2718 goto power_off; 2719 2720 if (!on) 2721 ov5640_set_power_off(sensor); 2722 2723 return 0; 2724 2725power_off: 2726 ov5640_set_power_off(sensor); 2727 return ret; 2728} 2729 2730static int ov5640_sensor_suspend(struct device *dev) 2731{ 2732 struct v4l2_subdev *sd = dev_get_drvdata(dev); 2733 struct ov5640_dev *ov5640 = to_ov5640_dev(sd); 2734 2735 return ov5640_set_power(ov5640, false); 2736} 2737 2738static int ov5640_sensor_resume(struct device *dev) 2739{ 2740 struct v4l2_subdev *sd = dev_get_drvdata(dev); 2741 struct ov5640_dev *ov5640 = to_ov5640_dev(sd); 2742 2743 return ov5640_set_power(ov5640, true); 2744} 2745 2746/* --------------- Subdev Operations --------------- */ 2747 2748static int ov5640_try_frame_interval(struct ov5640_dev *sensor, 2749 struct v4l2_fract *fi, 2750 const struct ov5640_mode_info *mode_info) 2751{ 2752 const struct ov5640_mode_info *mode = mode_info; 2753 enum ov5640_frame_rate rate = OV5640_15_FPS; 2754 int minfps, maxfps, best_fps, fps; 2755 int i; 2756 2757 minfps = ov5640_framerates[OV5640_15_FPS]; 2758 maxfps = ov5640_framerates[mode->max_fps]; 2759 2760 if (fi->numerator == 0) { 2761 fi->denominator = maxfps; 2762 fi->numerator = 1; 2763 rate = mode->max_fps; 2764 goto find_mode; 2765 } 2766 2767 fps = clamp_val(DIV_ROUND_CLOSEST(fi->denominator, fi->numerator), 2768 minfps, maxfps); 2769 2770 best_fps = minfps; 2771 for (i = 0; i < ARRAY_SIZE(ov5640_framerates); i++) { 2772 int curr_fps = ov5640_framerates[i]; 2773 2774 if (abs(curr_fps - fps) < abs(best_fps - fps)) { 2775 best_fps = curr_fps; 2776 rate = i; 2777 } 2778 } 2779 2780 fi->numerator = 1; 2781 fi->denominator = best_fps; 2782 2783find_mode: 2784 mode = ov5640_find_mode(sensor, mode->width, mode->height, false); 2785 return mode ? rate : -EINVAL; 2786} 2787 2788static int ov5640_get_fmt(struct v4l2_subdev *sd, 2789 struct v4l2_subdev_state *sd_state, 2790 struct v4l2_subdev_format *format) 2791{ 2792 struct ov5640_dev *sensor = to_ov5640_dev(sd); 2793 struct v4l2_mbus_framefmt *fmt; 2794 2795 if (format->pad != 0) 2796 return -EINVAL; 2797 2798 mutex_lock(&sensor->lock); 2799 2800 if (format->which == V4L2_SUBDEV_FORMAT_TRY) 2801 fmt = v4l2_subdev_state_get_format(sd_state, format->pad); 2802 else 2803 fmt = &sensor->fmt; 2804 2805 format->format = *fmt; 2806 2807 mutex_unlock(&sensor->lock); 2808 2809 return 0; 2810} 2811 2812static int ov5640_try_fmt_internal(struct v4l2_subdev *sd, 2813 struct v4l2_mbus_framefmt *fmt, 2814 const struct ov5640_mode_info **new_mode) 2815{ 2816 struct ov5640_dev *sensor = to_ov5640_dev(sd); 2817 const struct ov5640_mode_info *mode; 2818 const struct ov5640_pixfmt *pixfmt; 2819 unsigned int bpp; 2820 2821 mode = ov5640_find_mode(sensor, fmt->width, fmt->height, true); 2822 if (!mode) 2823 return -EINVAL; 2824 2825 pixfmt = ov5640_code_to_pixfmt(sensor, fmt->code); 2826 bpp = pixfmt->bpp; 2827 2828 /* 2829 * Adjust mode according to bpp: 2830 * - 8bpp modes work for resolution >= 1280x720 2831 * - 24bpp modes work resolution < 1280x720 2832 */ 2833 if (bpp == 8 && mode->width < 1280) 2834 mode = &ov5640_mode_data[OV5640_MODE_720P_1280_720]; 2835 else if (bpp == 24 && mode->width > 1024) 2836 mode = &ov5640_mode_data[OV5640_MODE_XGA_1024_768]; 2837 2838 fmt->width = mode->width; 2839 fmt->height = mode->height; 2840 2841 if (new_mode) 2842 *new_mode = mode; 2843 2844 fmt->code = pixfmt->code; 2845 fmt->colorspace = pixfmt->colorspace; 2846 fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace); 2847 fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE; 2848 fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace); 2849 2850 return 0; 2851} 2852 2853static void __v4l2_ctrl_vblank_update(struct ov5640_dev *sensor, u32 vblank) 2854{ 2855 const struct ov5640_mode_info *mode = sensor->current_mode; 2856 2857 __v4l2_ctrl_modify_range(sensor->ctrls.vblank, OV5640_MIN_VBLANK, 2858 OV5640_MAX_VTS - mode->height, 1, vblank); 2859 2860 __v4l2_ctrl_s_ctrl(sensor->ctrls.vblank, vblank); 2861} 2862 2863static int ov5640_update_pixel_rate(struct ov5640_dev *sensor) 2864{ 2865 const struct ov5640_mode_info *mode = sensor->current_mode; 2866 enum ov5640_pixel_rate_id pixel_rate_id = mode->pixel_rate; 2867 struct v4l2_mbus_framefmt *fmt = &sensor->fmt; 2868 const struct ov5640_timings *timings = ov5640_timings(sensor, mode); 2869 s32 exposure_val, exposure_max; 2870 unsigned int hblank; 2871 unsigned int i = 0; 2872 u32 pixel_rate; 2873 s64 link_freq; 2874 u32 num_lanes; 2875 u32 vblank; 2876 u32 bpp; 2877 2878 /* 2879 * Update the pixel rate control value. 2880 * 2881 * For DVP mode, maintain the pixel rate calculation using fixed FPS. 2882 */ 2883 if (!ov5640_is_csi2(sensor)) { 2884 __v4l2_ctrl_s_ctrl_int64(sensor->ctrls.pixel_rate, 2885 ov5640_calc_pixel_rate(sensor)); 2886 2887 __v4l2_ctrl_vblank_update(sensor, timings->vblank_def); 2888 2889 return 0; 2890 } 2891 2892 /* 2893 * The MIPI CSI-2 link frequency should comply with the CSI-2 2894 * specification and be lower than 1GHz. 2895 * 2896 * Start from the suggested pixel_rate for the current mode and 2897 * progressively slow it down if it exceeds 1GHz. 2898 */ 2899 num_lanes = sensor->ep.bus.mipi_csi2.num_data_lanes; 2900 bpp = ov5640_code_to_bpp(sensor, fmt->code); 2901 do { 2902 pixel_rate = ov5640_pixel_rates[pixel_rate_id]; 2903 link_freq = pixel_rate * bpp / (2 * num_lanes); 2904 } while (link_freq >= 1000000000U && 2905 ++pixel_rate_id < OV5640_NUM_PIXEL_RATES); 2906 2907 sensor->current_link_freq = link_freq; 2908 2909 /* 2910 * Higher link rates require the clock tree to be programmed with 2911 * 'mipi_div' = 1; this has the effect of halving the actual output 2912 * pixel rate in the MIPI domain. 2913 * 2914 * Adjust the pixel rate and link frequency control value to report it 2915 * correctly to userspace. 2916 */ 2917 if (link_freq > OV5640_LINK_RATE_MAX) { 2918 pixel_rate /= 2; 2919 link_freq /= 2; 2920 } 2921 2922 for (i = 0; i < ARRAY_SIZE(ov5640_csi2_link_freqs); ++i) { 2923 if (ov5640_csi2_link_freqs[i] == link_freq) 2924 break; 2925 } 2926 WARN_ON(i == ARRAY_SIZE(ov5640_csi2_link_freqs)); 2927 2928 __v4l2_ctrl_s_ctrl_int64(sensor->ctrls.pixel_rate, pixel_rate); 2929 __v4l2_ctrl_s_ctrl(sensor->ctrls.link_freq, i); 2930 2931 hblank = timings->htot - mode->width; 2932 __v4l2_ctrl_modify_range(sensor->ctrls.hblank, 2933 hblank, hblank, 1, hblank); 2934 2935 vblank = timings->vblank_def; 2936 __v4l2_ctrl_vblank_update(sensor, vblank); 2937 2938 exposure_max = timings->crop.height + vblank - 4; 2939 exposure_val = clamp_t(s32, sensor->ctrls.exposure->val, 2940 sensor->ctrls.exposure->minimum, 2941 exposure_max); 2942 2943 __v4l2_ctrl_modify_range(sensor->ctrls.exposure, 2944 sensor->ctrls.exposure->minimum, 2945 exposure_max, 1, exposure_val); 2946 2947 return 0; 2948} 2949 2950static int ov5640_set_fmt(struct v4l2_subdev *sd, 2951 struct v4l2_subdev_state *sd_state, 2952 struct v4l2_subdev_format *format) 2953{ 2954 struct ov5640_dev *sensor = to_ov5640_dev(sd); 2955 const struct ov5640_mode_info *new_mode; 2956 struct v4l2_mbus_framefmt *mbus_fmt = &format->format; 2957 int ret; 2958 2959 if (format->pad != 0) 2960 return -EINVAL; 2961 2962 mutex_lock(&sensor->lock); 2963 2964 if (sensor->streaming) { 2965 ret = -EBUSY; 2966 goto out; 2967 } 2968 2969 ret = ov5640_try_fmt_internal(sd, mbus_fmt, &new_mode); 2970 if (ret) 2971 goto out; 2972 2973 if (format->which == V4L2_SUBDEV_FORMAT_TRY) { 2974 *v4l2_subdev_state_get_format(sd_state, 0) = *mbus_fmt; 2975 goto out; 2976 } 2977 2978 if (new_mode != sensor->current_mode) { 2979 sensor->current_fr = new_mode->def_fps; 2980 sensor->current_mode = new_mode; 2981 sensor->pending_mode_change = true; 2982 } 2983 if (mbus_fmt->code != sensor->fmt.code) 2984 sensor->pending_fmt_change = true; 2985 2986 /* update format even if code is unchanged, resolution might change */ 2987 sensor->fmt = *mbus_fmt; 2988 2989 ov5640_update_pixel_rate(sensor); 2990 2991out: 2992 mutex_unlock(&sensor->lock); 2993 return ret; 2994} 2995 2996static int ov5640_get_selection(struct v4l2_subdev *sd, 2997 struct v4l2_subdev_state *sd_state, 2998 struct v4l2_subdev_selection *sel) 2999{ 3000 struct ov5640_dev *sensor = to_ov5640_dev(sd); 3001 const struct ov5640_mode_info *mode = sensor->current_mode; 3002 const struct ov5640_timings *timings; 3003 3004 switch (sel->target) { 3005 case V4L2_SEL_TGT_CROP: { 3006 mutex_lock(&sensor->lock); 3007 timings = ov5640_timings(sensor, mode); 3008 sel->r = timings->analog_crop; 3009 mutex_unlock(&sensor->lock); 3010 3011 return 0; 3012 } 3013 3014 case V4L2_SEL_TGT_NATIVE_SIZE: 3015 case V4L2_SEL_TGT_CROP_BOUNDS: 3016 sel->r.top = 0; 3017 sel->r.left = 0; 3018 sel->r.width = OV5640_NATIVE_WIDTH; 3019 sel->r.height = OV5640_NATIVE_HEIGHT; 3020 3021 return 0; 3022 3023 case V4L2_SEL_TGT_CROP_DEFAULT: 3024 sel->r.top = OV5640_PIXEL_ARRAY_TOP; 3025 sel->r.left = OV5640_PIXEL_ARRAY_LEFT; 3026 sel->r.width = OV5640_PIXEL_ARRAY_WIDTH; 3027 sel->r.height = OV5640_PIXEL_ARRAY_HEIGHT; 3028 3029 return 0; 3030 } 3031 3032 return -EINVAL; 3033} 3034 3035static int ov5640_set_framefmt(struct ov5640_dev *sensor, 3036 struct v4l2_mbus_framefmt *format) 3037{ 3038 bool is_jpeg = format->code == MEDIA_BUS_FMT_JPEG_1X8; 3039 const struct ov5640_pixfmt *pixfmt; 3040 int ret = 0; 3041 3042 pixfmt = ov5640_code_to_pixfmt(sensor, format->code); 3043 3044 /* FORMAT CONTROL00: YUV and RGB formatting */ 3045 ret = ov5640_write_reg(sensor, OV5640_REG_FORMAT_CONTROL00, 3046 pixfmt->ctrl00); 3047 if (ret) 3048 return ret; 3049 3050 /* FORMAT MUX CONTROL: ISP YUV or RGB */ 3051 ret = ov5640_write_reg(sensor, OV5640_REG_ISP_FORMAT_MUX_CTRL, 3052 pixfmt->mux); 3053 if (ret) 3054 return ret; 3055 3056 /* 3057 * TIMING TC REG21: 3058 * - [5]: JPEG enable 3059 */ 3060 ret = ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21, 3061 BIT(5), is_jpeg ? BIT(5) : 0); 3062 if (ret) 3063 return ret; 3064 3065 /* 3066 * SYSTEM RESET02: 3067 * - [4]: Reset JFIFO 3068 * - [3]: Reset SFIFO 3069 * - [2]: Reset JPEG 3070 */ 3071 ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_RESET02, 3072 BIT(4) | BIT(3) | BIT(2), 3073 is_jpeg ? 0 : (BIT(4) | BIT(3) | BIT(2))); 3074 if (ret) 3075 return ret; 3076 3077 /* 3078 * CLOCK ENABLE02: 3079 * - [5]: Enable JPEG 2x clock 3080 * - [3]: Enable JPEG clock 3081 */ 3082 return ov5640_mod_reg(sensor, OV5640_REG_SYS_CLOCK_ENABLE02, 3083 BIT(5) | BIT(3), 3084 is_jpeg ? (BIT(5) | BIT(3)) : 0); 3085} 3086 3087/* 3088 * Sensor Controls. 3089 */ 3090 3091static int ov5640_set_ctrl_hue(struct ov5640_dev *sensor, int value) 3092{ 3093 int ret; 3094 3095 if (value) { 3096 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, 3097 BIT(0), BIT(0)); 3098 if (ret) 3099 return ret; 3100 ret = ov5640_write_reg16(sensor, OV5640_REG_SDE_CTRL1, value); 3101 } else { 3102 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(0), 0); 3103 } 3104 3105 return ret; 3106} 3107 3108static int ov5640_set_ctrl_contrast(struct ov5640_dev *sensor, int value) 3109{ 3110 int ret; 3111 3112 if (value) { 3113 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, 3114 BIT(2), BIT(2)); 3115 if (ret) 3116 return ret; 3117 ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL5, 3118 value & 0xff); 3119 } else { 3120 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(2), 0); 3121 } 3122 3123 return ret; 3124} 3125 3126static int ov5640_set_ctrl_saturation(struct ov5640_dev *sensor, int value) 3127{ 3128 int ret; 3129 3130 if (value) { 3131 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, 3132 BIT(1), BIT(1)); 3133 if (ret) 3134 return ret; 3135 ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL3, 3136 value & 0xff); 3137 if (ret) 3138 return ret; 3139 ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL4, 3140 value & 0xff); 3141 } else { 3142 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(1), 0); 3143 } 3144 3145 return ret; 3146} 3147 3148static int ov5640_set_ctrl_white_balance(struct ov5640_dev *sensor, int awb) 3149{ 3150 int ret; 3151 3152 ret = ov5640_mod_reg(sensor, OV5640_REG_AWB_MANUAL_CTRL, 3153 BIT(0), awb ? 0 : 1); 3154 if (ret) 3155 return ret; 3156 3157 if (!awb) { 3158 u16 red = (u16)sensor->ctrls.red_balance->val; 3159 u16 blue = (u16)sensor->ctrls.blue_balance->val; 3160 3161 ret = ov5640_write_reg16(sensor, OV5640_REG_AWB_R_GAIN, red); 3162 if (ret) 3163 return ret; 3164 ret = ov5640_write_reg16(sensor, OV5640_REG_AWB_B_GAIN, blue); 3165 } 3166 3167 return ret; 3168} 3169 3170static int ov5640_set_ctrl_exposure(struct ov5640_dev *sensor, 3171 enum v4l2_exposure_auto_type auto_exposure) 3172{ 3173 struct ov5640_ctrls *ctrls = &sensor->ctrls; 3174 bool auto_exp = (auto_exposure == V4L2_EXPOSURE_AUTO); 3175 int ret = 0; 3176 3177 if (ctrls->auto_exp->is_new) { 3178 ret = ov5640_set_autoexposure(sensor, auto_exp); 3179 if (ret) 3180 return ret; 3181 } 3182 3183 if (!auto_exp && ctrls->exposure->is_new) { 3184 u16 max_exp; 3185 3186 ret = ov5640_read_reg16(sensor, OV5640_REG_AEC_PK_VTS, 3187 &max_exp); 3188 if (ret) 3189 return ret; 3190 ret = ov5640_get_vts(sensor); 3191 if (ret < 0) 3192 return ret; 3193 max_exp += ret; 3194 ret = 0; 3195 3196 if (ctrls->exposure->val < max_exp) 3197 ret = ov5640_set_exposure(sensor, ctrls->exposure->val); 3198 } 3199 3200 return ret; 3201} 3202 3203static int ov5640_set_ctrl_gain(struct ov5640_dev *sensor, bool auto_gain) 3204{ 3205 struct ov5640_ctrls *ctrls = &sensor->ctrls; 3206 int ret = 0; 3207 3208 if (ctrls->auto_gain->is_new) { 3209 ret = ov5640_set_autogain(sensor, auto_gain); 3210 if (ret) 3211 return ret; 3212 } 3213 3214 if (!auto_gain && ctrls->gain->is_new) 3215 ret = ov5640_set_gain(sensor, ctrls->gain->val); 3216 3217 return ret; 3218} 3219 3220static const char * const test_pattern_menu[] = { 3221 "Disabled", 3222 "Color bars", 3223 "Color bars w/ rolling bar", 3224 "Color squares", 3225 "Color squares w/ rolling bar", 3226}; 3227 3228#define OV5640_TEST_ENABLE BIT(7) 3229#define OV5640_TEST_ROLLING BIT(6) /* rolling horizontal bar */ 3230#define OV5640_TEST_TRANSPARENT BIT(5) 3231#define OV5640_TEST_SQUARE_BW BIT(4) /* black & white squares */ 3232#define OV5640_TEST_BAR_STANDARD (0 << 2) 3233#define OV5640_TEST_BAR_VERT_CHANGE_1 (1 << 2) 3234#define OV5640_TEST_BAR_HOR_CHANGE (2 << 2) 3235#define OV5640_TEST_BAR_VERT_CHANGE_2 (3 << 2) 3236#define OV5640_TEST_BAR (0 << 0) 3237#define OV5640_TEST_RANDOM (1 << 0) 3238#define OV5640_TEST_SQUARE (2 << 0) 3239#define OV5640_TEST_BLACK (3 << 0) 3240 3241static const u8 test_pattern_val[] = { 3242 0, 3243 OV5640_TEST_ENABLE | OV5640_TEST_BAR_VERT_CHANGE_1 | 3244 OV5640_TEST_BAR, 3245 OV5640_TEST_ENABLE | OV5640_TEST_ROLLING | 3246 OV5640_TEST_BAR_VERT_CHANGE_1 | OV5640_TEST_BAR, 3247 OV5640_TEST_ENABLE | OV5640_TEST_SQUARE, 3248 OV5640_TEST_ENABLE | OV5640_TEST_ROLLING | OV5640_TEST_SQUARE, 3249}; 3250 3251static int ov5640_set_ctrl_test_pattern(struct ov5640_dev *sensor, int value) 3252{ 3253 return ov5640_write_reg(sensor, OV5640_REG_PRE_ISP_TEST_SET1, 3254 test_pattern_val[value]); 3255} 3256 3257static int ov5640_set_ctrl_light_freq(struct ov5640_dev *sensor, int value) 3258{ 3259 int ret; 3260 3261 ret = ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL01, BIT(7), 3262 (value == V4L2_CID_POWER_LINE_FREQUENCY_AUTO) ? 3263 0 : BIT(7)); 3264 if (ret) 3265 return ret; 3266 3267 return ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL00, BIT(2), 3268 (value == V4L2_CID_POWER_LINE_FREQUENCY_50HZ) ? 3269 BIT(2) : 0); 3270} 3271 3272static int ov5640_set_ctrl_hflip(struct ov5640_dev *sensor, int value) 3273{ 3274 /* 3275 * If sensor is mounted upside down, mirror logic is inversed. 3276 * 3277 * Sensor is a BSI (Back Side Illuminated) one, 3278 * so image captured is physically mirrored. 3279 * This is why mirror logic is inversed in 3280 * order to cancel this mirror effect. 3281 */ 3282 3283 /* 3284 * TIMING TC REG21: 3285 * - [2]: ISP mirror 3286 * - [1]: Sensor mirror 3287 */ 3288 return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21, 3289 BIT(2) | BIT(1), 3290 (!(value ^ sensor->upside_down)) ? 3291 (BIT(2) | BIT(1)) : 0); 3292} 3293 3294static int ov5640_set_ctrl_vflip(struct ov5640_dev *sensor, int value) 3295{ 3296 /* If sensor is mounted upside down, flip logic is inversed */ 3297 3298 /* 3299 * TIMING TC REG20: 3300 * - [2]: ISP vflip 3301 * - [1]: Sensor vflip 3302 */ 3303 return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20, 3304 BIT(2) | BIT(1), 3305 (value ^ sensor->upside_down) ? 3306 (BIT(2) | BIT(1)) : 0); 3307} 3308 3309static int ov5640_set_ctrl_vblank(struct ov5640_dev *sensor, int value) 3310{ 3311 const struct ov5640_mode_info *mode = sensor->current_mode; 3312 3313 /* Update the VTOT timing register value. */ 3314 return ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS, 3315 mode->height + value); 3316} 3317 3318static int ov5640_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 3319{ 3320 struct v4l2_subdev *sd = ctrl_to_sd(ctrl); 3321 struct ov5640_dev *sensor = to_ov5640_dev(sd); 3322 int val; 3323 3324 /* v4l2_ctrl_lock() locks our own mutex */ 3325 3326 if (!pm_runtime_get_if_in_use(&sensor->i2c_client->dev)) 3327 return 0; 3328 3329 switch (ctrl->id) { 3330 case V4L2_CID_AUTOGAIN: 3331 val = ov5640_get_gain(sensor); 3332 if (val < 0) 3333 return val; 3334 sensor->ctrls.gain->val = val; 3335 break; 3336 case V4L2_CID_EXPOSURE_AUTO: 3337 val = ov5640_get_exposure(sensor); 3338 if (val < 0) 3339 return val; 3340 sensor->ctrls.exposure->val = val; 3341 break; 3342 } 3343 3344 pm_runtime_put_autosuspend(&sensor->i2c_client->dev); 3345 3346 return 0; 3347} 3348 3349static int ov5640_s_ctrl(struct v4l2_ctrl *ctrl) 3350{ 3351 struct v4l2_subdev *sd = ctrl_to_sd(ctrl); 3352 struct ov5640_dev *sensor = to_ov5640_dev(sd); 3353 const struct ov5640_mode_info *mode = sensor->current_mode; 3354 const struct ov5640_timings *timings; 3355 unsigned int exp_max; 3356 int ret; 3357 3358 /* v4l2_ctrl_lock() locks our own mutex */ 3359 3360 switch (ctrl->id) { 3361 case V4L2_CID_VBLANK: 3362 /* Update the exposure range to the newly programmed vblank. */ 3363 timings = ov5640_timings(sensor, mode); 3364 exp_max = mode->height + ctrl->val - 4; 3365 __v4l2_ctrl_modify_range(sensor->ctrls.exposure, 3366 sensor->ctrls.exposure->minimum, 3367 exp_max, sensor->ctrls.exposure->step, 3368 timings->vblank_def); 3369 break; 3370 } 3371 3372 /* 3373 * If the device is not powered up by the host driver do 3374 * not apply any controls to H/W at this time. Instead 3375 * the controls will be restored at start streaming time. 3376 */ 3377 if (!pm_runtime_get_if_in_use(&sensor->i2c_client->dev)) 3378 return 0; 3379 3380 switch (ctrl->id) { 3381 case V4L2_CID_AUTOGAIN: 3382 ret = ov5640_set_ctrl_gain(sensor, ctrl->val); 3383 break; 3384 case V4L2_CID_EXPOSURE_AUTO: 3385 ret = ov5640_set_ctrl_exposure(sensor, ctrl->val); 3386 break; 3387 case V4L2_CID_AUTO_WHITE_BALANCE: 3388 ret = ov5640_set_ctrl_white_balance(sensor, ctrl->val); 3389 break; 3390 case V4L2_CID_HUE: 3391 ret = ov5640_set_ctrl_hue(sensor, ctrl->val); 3392 break; 3393 case V4L2_CID_CONTRAST: 3394 ret = ov5640_set_ctrl_contrast(sensor, ctrl->val); 3395 break; 3396 case V4L2_CID_SATURATION: 3397 ret = ov5640_set_ctrl_saturation(sensor, ctrl->val); 3398 break; 3399 case V4L2_CID_TEST_PATTERN: 3400 ret = ov5640_set_ctrl_test_pattern(sensor, ctrl->val); 3401 break; 3402 case V4L2_CID_POWER_LINE_FREQUENCY: 3403 ret = ov5640_set_ctrl_light_freq(sensor, ctrl->val); 3404 break; 3405 case V4L2_CID_HFLIP: 3406 ret = ov5640_set_ctrl_hflip(sensor, ctrl->val); 3407 break; 3408 case V4L2_CID_VFLIP: 3409 ret = ov5640_set_ctrl_vflip(sensor, ctrl->val); 3410 break; 3411 case V4L2_CID_VBLANK: 3412 ret = ov5640_set_ctrl_vblank(sensor, ctrl->val); 3413 break; 3414 default: 3415 ret = -EINVAL; 3416 break; 3417 } 3418 3419 pm_runtime_put_autosuspend(&sensor->i2c_client->dev); 3420 3421 return ret; 3422} 3423 3424static const struct v4l2_ctrl_ops ov5640_ctrl_ops = { 3425 .g_volatile_ctrl = ov5640_g_volatile_ctrl, 3426 .s_ctrl = ov5640_s_ctrl, 3427}; 3428 3429static int ov5640_init_controls(struct ov5640_dev *sensor) 3430{ 3431 const struct ov5640_mode_info *mode = sensor->current_mode; 3432 const struct v4l2_ctrl_ops *ops = &ov5640_ctrl_ops; 3433 struct ov5640_ctrls *ctrls = &sensor->ctrls; 3434 struct v4l2_ctrl_handler *hdl = &ctrls->handler; 3435 struct v4l2_fwnode_device_properties props; 3436 const struct ov5640_timings *timings; 3437 unsigned int max_vblank; 3438 unsigned int hblank; 3439 int ret; 3440 3441 v4l2_ctrl_handler_init(hdl, 32); 3442 3443 /* we can use our own mutex for the ctrl lock */ 3444 hdl->lock = &sensor->lock; 3445 3446 /* Clock related controls */ 3447 ctrls->pixel_rate = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_PIXEL_RATE, 3448 ov5640_pixel_rates[OV5640_NUM_PIXEL_RATES - 1], 3449 ov5640_pixel_rates[0], 1, 3450 ov5640_pixel_rates[mode->pixel_rate]); 3451 3452 ctrls->link_freq = v4l2_ctrl_new_int_menu(hdl, ops, 3453 V4L2_CID_LINK_FREQ, 3454 ARRAY_SIZE(ov5640_csi2_link_freqs) - 1, 3455 OV5640_DEFAULT_LINK_FREQ, 3456 ov5640_csi2_link_freqs); 3457 3458 timings = ov5640_timings(sensor, mode); 3459 hblank = timings->htot - mode->width; 3460 ctrls->hblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK, hblank, 3461 hblank, 1, hblank); 3462 3463 max_vblank = OV5640_MAX_VTS - mode->height; 3464 ctrls->vblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK, 3465 OV5640_MIN_VBLANK, max_vblank, 3466 1, timings->vblank_def); 3467 3468 /* Auto/manual white balance */ 3469 ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops, 3470 V4L2_CID_AUTO_WHITE_BALANCE, 3471 0, 1, 1, 1); 3472 ctrls->blue_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BLUE_BALANCE, 3473 0, 4095, 1, 0); 3474 ctrls->red_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_RED_BALANCE, 3475 0, 4095, 1, 0); 3476 /* Auto/manual exposure */ 3477 ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops, 3478 V4L2_CID_EXPOSURE_AUTO, 3479 V4L2_EXPOSURE_MANUAL, 0, 3480 V4L2_EXPOSURE_AUTO); 3481 ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE, 3482 0, 65535, 1, 0); 3483 /* Auto/manual gain */ 3484 ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTOGAIN, 3485 0, 1, 1, 1); 3486 ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN, 3487 0, 1023, 1, 0); 3488 3489 ctrls->saturation = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION, 3490 0, 255, 1, 64); 3491 ctrls->hue = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HUE, 3492 0, 359, 1, 0); 3493 ctrls->contrast = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, 3494 0, 255, 1, 0); 3495 ctrls->test_pattern = 3496 v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN, 3497 ARRAY_SIZE(test_pattern_menu) - 1, 3498 0, 0, test_pattern_menu); 3499 ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 3500 0, 1, 1, 0); 3501 ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 3502 0, 1, 1, 0); 3503 3504 ctrls->light_freq = 3505 v4l2_ctrl_new_std_menu(hdl, ops, 3506 V4L2_CID_POWER_LINE_FREQUENCY, 3507 V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0, 3508 V4L2_CID_POWER_LINE_FREQUENCY_50HZ); 3509 3510 if (hdl->error) { 3511 ret = hdl->error; 3512 goto free_ctrls; 3513 } 3514 3515 ret = v4l2_fwnode_device_parse(&sensor->i2c_client->dev, &props); 3516 if (ret) 3517 goto free_ctrls; 3518 3519 if (props.rotation == 180) 3520 sensor->upside_down = true; 3521 3522 ret = v4l2_ctrl_new_fwnode_properties(hdl, ops, &props); 3523 if (ret) 3524 goto free_ctrls; 3525 3526 ctrls->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY; 3527 ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; 3528 ctrls->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; 3529 ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE; 3530 ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE; 3531 3532 v4l2_ctrl_auto_cluster(3, &ctrls->auto_wb, 0, false); 3533 v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true); 3534 v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp, 1, true); 3535 3536 sensor->sd.ctrl_handler = hdl; 3537 return 0; 3538 3539free_ctrls: 3540 v4l2_ctrl_handler_free(hdl); 3541 return ret; 3542} 3543 3544static int ov5640_enum_frame_size(struct v4l2_subdev *sd, 3545 struct v4l2_subdev_state *sd_state, 3546 struct v4l2_subdev_frame_size_enum *fse) 3547{ 3548 struct ov5640_dev *sensor = to_ov5640_dev(sd); 3549 u32 bpp = ov5640_code_to_bpp(sensor, fse->code); 3550 unsigned int index = fse->index; 3551 3552 if (fse->pad != 0) 3553 return -EINVAL; 3554 if (!bpp) 3555 return -EINVAL; 3556 3557 /* Only low-resolution modes are supported for 24bpp formats. */ 3558 if (bpp == 24 && index >= OV5640_MODE_720P_1280_720) 3559 return -EINVAL; 3560 3561 /* FIXME: Low resolution modes don't work in 8bpp formats. */ 3562 if (bpp == 8) 3563 index += OV5640_MODE_720P_1280_720; 3564 3565 if (index >= OV5640_NUM_MODES) 3566 return -EINVAL; 3567 3568 fse->min_width = ov5640_mode_data[index].width; 3569 fse->max_width = fse->min_width; 3570 fse->min_height = ov5640_mode_data[index].height; 3571 fse->max_height = fse->min_height; 3572 3573 return 0; 3574} 3575 3576static int ov5640_enum_frame_interval( 3577 struct v4l2_subdev *sd, 3578 struct v4l2_subdev_state *sd_state, 3579 struct v4l2_subdev_frame_interval_enum *fie) 3580{ 3581 struct ov5640_dev *sensor = to_ov5640_dev(sd); 3582 const struct ov5640_mode_info *mode; 3583 struct v4l2_fract tpf; 3584 int ret; 3585 3586 if (fie->pad != 0) 3587 return -EINVAL; 3588 if (fie->index >= OV5640_NUM_FRAMERATES) 3589 return -EINVAL; 3590 3591 mode = ov5640_find_mode(sensor, fie->width, fie->height, false); 3592 if (!mode) 3593 return -EINVAL; 3594 3595 tpf.numerator = 1; 3596 tpf.denominator = ov5640_framerates[fie->index]; 3597 3598 ret = ov5640_try_frame_interval(sensor, &tpf, mode); 3599 if (ret < 0) 3600 return -EINVAL; 3601 3602 fie->interval = tpf; 3603 return 0; 3604} 3605 3606static int ov5640_get_frame_interval(struct v4l2_subdev *sd, 3607 struct v4l2_subdev_state *sd_state, 3608 struct v4l2_subdev_frame_interval *fi) 3609{ 3610 struct ov5640_dev *sensor = to_ov5640_dev(sd); 3611 3612 /* 3613 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2 3614 * subdev active state API. 3615 */ 3616 if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE) 3617 return -EINVAL; 3618 3619 mutex_lock(&sensor->lock); 3620 fi->interval = sensor->frame_interval; 3621 mutex_unlock(&sensor->lock); 3622 3623 return 0; 3624} 3625 3626static int ov5640_set_frame_interval(struct v4l2_subdev *sd, 3627 struct v4l2_subdev_state *sd_state, 3628 struct v4l2_subdev_frame_interval *fi) 3629{ 3630 struct ov5640_dev *sensor = to_ov5640_dev(sd); 3631 const struct ov5640_mode_info *mode; 3632 int frame_rate, ret = 0; 3633 3634 /* 3635 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2 3636 * subdev active state API. 3637 */ 3638 if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE) 3639 return -EINVAL; 3640 3641 if (fi->pad != 0) 3642 return -EINVAL; 3643 3644 mutex_lock(&sensor->lock); 3645 3646 if (sensor->streaming) { 3647 ret = -EBUSY; 3648 goto out; 3649 } 3650 3651 mode = sensor->current_mode; 3652 3653 frame_rate = ov5640_try_frame_interval(sensor, &fi->interval, mode); 3654 if (frame_rate < 0) { 3655 /* Always return a valid frame interval value */ 3656 fi->interval = sensor->frame_interval; 3657 goto out; 3658 } 3659 3660 mode = ov5640_find_mode(sensor, mode->width, mode->height, true); 3661 if (!mode) { 3662 ret = -EINVAL; 3663 goto out; 3664 } 3665 3666 if (ov5640_framerates[frame_rate] > ov5640_framerates[mode->max_fps]) { 3667 ret = -EINVAL; 3668 goto out; 3669 } 3670 3671 if (mode != sensor->current_mode || 3672 frame_rate != sensor->current_fr) { 3673 sensor->current_fr = frame_rate; 3674 sensor->frame_interval = fi->interval; 3675 sensor->current_mode = mode; 3676 sensor->pending_mode_change = true; 3677 3678 ov5640_update_pixel_rate(sensor); 3679 } 3680out: 3681 mutex_unlock(&sensor->lock); 3682 return ret; 3683} 3684 3685static int ov5640_enum_mbus_code(struct v4l2_subdev *sd, 3686 struct v4l2_subdev_state *sd_state, 3687 struct v4l2_subdev_mbus_code_enum *code) 3688{ 3689 struct ov5640_dev *sensor = to_ov5640_dev(sd); 3690 const struct ov5640_pixfmt *formats; 3691 unsigned int num_formats; 3692 3693 if (ov5640_is_csi2(sensor)) { 3694 formats = ov5640_csi2_formats; 3695 num_formats = ARRAY_SIZE(ov5640_csi2_formats) - 1; 3696 } else { 3697 formats = ov5640_dvp_formats; 3698 num_formats = ARRAY_SIZE(ov5640_dvp_formats) - 1; 3699 } 3700 3701 if (code->index >= num_formats) 3702 return -EINVAL; 3703 3704 code->code = formats[code->index].code; 3705 3706 return 0; 3707} 3708 3709static int ov5640_s_stream(struct v4l2_subdev *sd, int enable) 3710{ 3711 struct ov5640_dev *sensor = to_ov5640_dev(sd); 3712 int ret = 0; 3713 3714 if (enable) { 3715 ret = pm_runtime_resume_and_get(&sensor->i2c_client->dev); 3716 if (ret < 0) 3717 return ret; 3718 3719 ret = v4l2_ctrl_handler_setup(&sensor->ctrls.handler); 3720 if (ret) { 3721 pm_runtime_put(&sensor->i2c_client->dev); 3722 return ret; 3723 } 3724 } 3725 3726 mutex_lock(&sensor->lock); 3727 3728 if (sensor->streaming == !enable) { 3729 if (enable && sensor->pending_mode_change) { 3730 ret = ov5640_set_mode(sensor); 3731 if (ret) 3732 goto out; 3733 } 3734 3735 if (enable && sensor->pending_fmt_change) { 3736 ret = ov5640_set_framefmt(sensor, &sensor->fmt); 3737 if (ret) 3738 goto out; 3739 sensor->pending_fmt_change = false; 3740 } 3741 3742 if (ov5640_is_csi2(sensor)) 3743 ret = ov5640_set_stream_mipi(sensor, enable); 3744 else 3745 ret = ov5640_set_stream_dvp(sensor, enable); 3746 3747 if (!ret) 3748 sensor->streaming = enable; 3749 } 3750 3751out: 3752 mutex_unlock(&sensor->lock); 3753 3754 if (!enable || ret) { 3755 pm_runtime_put_autosuspend(&sensor->i2c_client->dev); 3756 } 3757 3758 return ret; 3759} 3760 3761static int ov5640_init_state(struct v4l2_subdev *sd, 3762 struct v4l2_subdev_state *state) 3763{ 3764 struct ov5640_dev *sensor = to_ov5640_dev(sd); 3765 struct v4l2_mbus_framefmt *fmt = 3766 v4l2_subdev_state_get_format(state, 0); 3767 struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0); 3768 3769 *fmt = ov5640_is_csi2(sensor) ? ov5640_csi2_default_fmt : 3770 ov5640_dvp_default_fmt; 3771 3772 crop->left = OV5640_PIXEL_ARRAY_LEFT; 3773 crop->top = OV5640_PIXEL_ARRAY_TOP; 3774 crop->width = OV5640_PIXEL_ARRAY_WIDTH; 3775 crop->height = OV5640_PIXEL_ARRAY_HEIGHT; 3776 3777 return 0; 3778} 3779 3780static const struct v4l2_subdev_core_ops ov5640_core_ops = { 3781 .log_status = v4l2_ctrl_subdev_log_status, 3782 .subscribe_event = v4l2_ctrl_subdev_subscribe_event, 3783 .unsubscribe_event = v4l2_event_subdev_unsubscribe, 3784}; 3785 3786static const struct v4l2_subdev_video_ops ov5640_video_ops = { 3787 .s_stream = ov5640_s_stream, 3788}; 3789 3790static const struct v4l2_subdev_pad_ops ov5640_pad_ops = { 3791 .enum_mbus_code = ov5640_enum_mbus_code, 3792 .get_fmt = ov5640_get_fmt, 3793 .set_fmt = ov5640_set_fmt, 3794 .get_selection = ov5640_get_selection, 3795 .get_frame_interval = ov5640_get_frame_interval, 3796 .set_frame_interval = ov5640_set_frame_interval, 3797 .enum_frame_size = ov5640_enum_frame_size, 3798 .enum_frame_interval = ov5640_enum_frame_interval, 3799}; 3800 3801static const struct v4l2_subdev_ops ov5640_subdev_ops = { 3802 .core = &ov5640_core_ops, 3803 .video = &ov5640_video_ops, 3804 .pad = &ov5640_pad_ops, 3805}; 3806 3807static const struct v4l2_subdev_internal_ops ov5640_internal_ops = { 3808 .init_state = ov5640_init_state, 3809}; 3810 3811static int ov5640_get_regulators(struct ov5640_dev *sensor) 3812{ 3813 int i; 3814 3815 for (i = 0; i < OV5640_NUM_SUPPLIES; i++) 3816 sensor->supplies[i].supply = ov5640_supply_name[i]; 3817 3818 return devm_regulator_bulk_get(&sensor->i2c_client->dev, 3819 OV5640_NUM_SUPPLIES, 3820 sensor->supplies); 3821} 3822 3823static int ov5640_check_chip_id(struct ov5640_dev *sensor) 3824{ 3825 struct i2c_client *client = sensor->i2c_client; 3826 int ret = 0; 3827 u16 chip_id; 3828 3829 ret = ov5640_read_reg16(sensor, OV5640_REG_CHIP_ID, &chip_id); 3830 if (ret) { 3831 dev_err(&client->dev, "%s: failed to read chip identifier\n", 3832 __func__); 3833 return ret; 3834 } 3835 3836 if (chip_id != 0x5640) { 3837 dev_err(&client->dev, "%s: wrong chip identifier, expected 0x5640, got 0x%x\n", 3838 __func__, chip_id); 3839 return -ENXIO; 3840 } 3841 3842 return 0; 3843} 3844 3845static int ov5640_probe(struct i2c_client *client) 3846{ 3847 struct device *dev = &client->dev; 3848 struct fwnode_handle *endpoint; 3849 struct ov5640_dev *sensor; 3850 int ret; 3851 3852 sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); 3853 if (!sensor) 3854 return -ENOMEM; 3855 3856 sensor->i2c_client = client; 3857 3858 /* 3859 * default init sequence initialize sensor to 3860 * YUV422 UYVY VGA(30FPS in parallel mode, 60 in MIPI CSI-2 mode) 3861 */ 3862 sensor->frame_interval.numerator = 1; 3863 sensor->frame_interval.denominator = ov5640_framerates[OV5640_30_FPS]; 3864 sensor->current_fr = OV5640_30_FPS; 3865 sensor->current_mode = 3866 &ov5640_mode_data[OV5640_MODE_VGA_640_480]; 3867 sensor->last_mode = sensor->current_mode; 3868 sensor->current_link_freq = 3869 ov5640_csi2_link_freqs[OV5640_DEFAULT_LINK_FREQ]; 3870 3871 sensor->ae_target = 52; 3872 3873 endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), 3874 NULL); 3875 if (!endpoint) { 3876 dev_err(dev, "endpoint node not found\n"); 3877 return -EINVAL; 3878 } 3879 3880 ret = v4l2_fwnode_endpoint_parse(endpoint, &sensor->ep); 3881 fwnode_handle_put(endpoint); 3882 if (ret) { 3883 dev_err(dev, "Could not parse endpoint\n"); 3884 return ret; 3885 } 3886 3887 if (sensor->ep.bus_type != V4L2_MBUS_PARALLEL && 3888 sensor->ep.bus_type != V4L2_MBUS_CSI2_DPHY && 3889 sensor->ep.bus_type != V4L2_MBUS_BT656) { 3890 dev_err(dev, "Unsupported bus type %d\n", sensor->ep.bus_type); 3891 return -EINVAL; 3892 } 3893 3894 sensor->fmt = ov5640_is_csi2(sensor) ? ov5640_csi2_default_fmt : 3895 ov5640_dvp_default_fmt; 3896 3897 /* get system clock (xclk) */ 3898 sensor->xclk = devm_v4l2_sensor_clk_get(dev, "xclk"); 3899 if (IS_ERR(sensor->xclk)) 3900 return dev_err_probe(dev, PTR_ERR(sensor->xclk), 3901 "failed to get xclk\n"); 3902 3903 sensor->xclk_freq = clk_get_rate(sensor->xclk); 3904 if (sensor->xclk_freq < OV5640_XCLK_MIN || 3905 sensor->xclk_freq > OV5640_XCLK_MAX) { 3906 dev_err(dev, "xclk frequency out of range: %d Hz\n", 3907 sensor->xclk_freq); 3908 return -EINVAL; 3909 } 3910 3911 /* request optional power down pin */ 3912 sensor->pwdn_gpio = devm_gpiod_get_optional(dev, "powerdown", 3913 GPIOD_OUT_HIGH); 3914 if (IS_ERR(sensor->pwdn_gpio)) 3915 return PTR_ERR(sensor->pwdn_gpio); 3916 3917 /* request optional reset pin */ 3918 sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset", 3919 GPIOD_OUT_HIGH); 3920 if (IS_ERR(sensor->reset_gpio)) 3921 return PTR_ERR(sensor->reset_gpio); 3922 3923 v4l2_i2c_subdev_init(&sensor->sd, client, &ov5640_subdev_ops); 3924 sensor->sd.internal_ops = &ov5640_internal_ops; 3925 3926 sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | 3927 V4L2_SUBDEV_FL_HAS_EVENTS; 3928 sensor->pad.flags = MEDIA_PAD_FL_SOURCE; 3929 sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 3930 ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad); 3931 if (ret) 3932 return ret; 3933 3934 ret = ov5640_get_regulators(sensor); 3935 if (ret) 3936 goto entity_cleanup; 3937 3938 mutex_init(&sensor->lock); 3939 3940 ret = ov5640_init_controls(sensor); 3941 if (ret) 3942 goto entity_cleanup; 3943 3944 ret = ov5640_sensor_resume(dev); 3945 if (ret) { 3946 dev_err(dev, "failed to power on\n"); 3947 goto free_ctrls; 3948 } 3949 3950 pm_runtime_set_active(dev); 3951 pm_runtime_get_noresume(dev); 3952 pm_runtime_enable(dev); 3953 3954 ret = ov5640_check_chip_id(sensor); 3955 if (ret) 3956 goto err_pm_runtime; 3957 3958 ret = v4l2_async_register_subdev_sensor(&sensor->sd); 3959 if (ret) 3960 goto err_pm_runtime; 3961 3962 pm_runtime_set_autosuspend_delay(dev, 1000); 3963 pm_runtime_use_autosuspend(dev); 3964 pm_runtime_put_autosuspend(dev); 3965 3966 return 0; 3967 3968err_pm_runtime: 3969 pm_runtime_put_noidle(dev); 3970 pm_runtime_disable(dev); 3971 ov5640_sensor_suspend(dev); 3972free_ctrls: 3973 v4l2_ctrl_handler_free(&sensor->ctrls.handler); 3974entity_cleanup: 3975 media_entity_cleanup(&sensor->sd.entity); 3976 mutex_destroy(&sensor->lock); 3977 return ret; 3978} 3979 3980static void ov5640_remove(struct i2c_client *client) 3981{ 3982 struct v4l2_subdev *sd = i2c_get_clientdata(client); 3983 struct ov5640_dev *sensor = to_ov5640_dev(sd); 3984 struct device *dev = &client->dev; 3985 3986 pm_runtime_disable(dev); 3987 if (!pm_runtime_status_suspended(dev)) 3988 ov5640_sensor_suspend(dev); 3989 pm_runtime_set_suspended(dev); 3990 3991 v4l2_async_unregister_subdev(&sensor->sd); 3992 media_entity_cleanup(&sensor->sd.entity); 3993 v4l2_ctrl_handler_free(&sensor->ctrls.handler); 3994 mutex_destroy(&sensor->lock); 3995} 3996 3997static const struct dev_pm_ops ov5640_pm_ops = { 3998 SET_RUNTIME_PM_OPS(ov5640_sensor_suspend, ov5640_sensor_resume, NULL) 3999}; 4000 4001static const struct i2c_device_id ov5640_id[] = { 4002 { "ov5640" }, 4003 {} 4004}; 4005MODULE_DEVICE_TABLE(i2c, ov5640_id); 4006 4007static const struct of_device_id ov5640_dt_ids[] = { 4008 { .compatible = "ovti,ov5640" }, 4009 { /* sentinel */ } 4010}; 4011MODULE_DEVICE_TABLE(of, ov5640_dt_ids); 4012 4013static struct i2c_driver ov5640_i2c_driver = { 4014 .driver = { 4015 .name = "ov5640", 4016 .of_match_table = ov5640_dt_ids, 4017 .pm = &ov5640_pm_ops, 4018 }, 4019 .id_table = ov5640_id, 4020 .probe = ov5640_probe, 4021 .remove = ov5640_remove, 4022}; 4023 4024module_i2c_driver(ov5640_i2c_driver); 4025 4026MODULE_DESCRIPTION("OV5640 MIPI Camera Subdev Driver"); 4027MODULE_LICENSE("GPL");
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