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
 122 enum 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
 136 enum ov5640_frame_rate {
 137         OV5640_15_FPS = 0,
 138         OV5640_30_FPS,
 139         OV5640_60_FPS,
 140         OV5640_NUM_FRAMERATES,
 141 };
 142
 143 enum 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  */
 158 static 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  */
 174 static 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
 184 enum 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
 193 struct ov5640_pixfmt {
 194         u32 code;
 195         u32 colorspace;
 196         u8 bpp;
 197         u8 ctrl00;
 198         enum ov5640_format_mux mux;
 199 };
 200
 201 static 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
 269 static 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  */
 341 static unsigned int virtual_channel;
 342 module_param(virtual_channel, uint, 0444);
 343 MODULE_PARM_DESC(virtual_channel,
 344                  "MIPI CSI-2 virtual channel (0..3), default 0");
 345
 346 static const int ov5640_framerates[] = {
 347         [OV5640_15_FPS] = 15,
 348         [OV5640_30_FPS] = 30,
 349         [OV5640_60_FPS] = 60,
 350 };
 351
 352 /* regulator supplies */
 353 static 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  */
 365 enum ov5640_downsize_mode {
 366         SUBSAMPLING,
 367         SCALING,
 368 };
 369
 370 struct reg_value {
 371         u16 reg_addr;
 372         u8 val;
 373         u8 mask;
 374         u32 delay_ms;
 375 };
 376
 377 struct ov5640_timings {
 378         /* Analog crop rectangle. */
 379         struct v4l2_rect analog_crop;
 380         /* Visibile 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
 388 struct 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 s_frame_interval only. */
 403         u32 max_fps;
 404         u32 def_fps;
 405 };
 406
 407 struct 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
 436 struct 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
 470 static inline struct ov5640_dev *to_ov5640_dev(struct v4l2_subdev *sd)
 471 {
 472         return container_of(sd, struct ov5640_dev, sd);
 473 }
 474
 475 static 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
 481 static inline bool ov5640_is_csi2(const struct ov5640_dev *sensor)
 482 {
 483         return sensor->ep.bus_type == V4L2_MBUS_CSI2_DPHY;
 484 }
 485
 486 static inline const struct ov5640_pixfmt *
 487 ov5640_formats(struct ov5640_dev *sensor)
 488 {
 489         return ov5640_is_csi2(sensor) ? ov5640_csi2_formats
 490                                       : ov5640_dvp_formats;
 491 }
 492
 493 static const struct ov5640_pixfmt *
 494 ov5640_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
 507 static 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
 524 static 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
 535 static 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
 546 static 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
 624 static 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
 639 static 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
 654 static 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
 678 static 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
 693 static 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
1140 static const struct ov5640_timings *
1141 ov5640_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
1150 static 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
1178 static 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
1204 static 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
1235 static 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
1251 static 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
1262 static 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
1376 static 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
1389 static 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
1442 out:
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  */
1454 static 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
1550 static 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
1562 static 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
1579 static 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 */
1624 static 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 */
1648 static 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
1714 static 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
1747 static 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 */
1754 static 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 */
1776 static 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
1797 static 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
1809 static 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
1815 static 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
1821 static 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
1828 static 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
1858 static 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
1909 static 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
1922 static 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
1934 static 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
1945 static int ov5640_set_vts(struct ov5640_dev *sensor, int vts)
1946 {
1947         return ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS, vts);
1948 }
1949
1950 static 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                 }
1986         }
1987
1988         return light_freq;
1989 }
1990
1991 static int ov5640_set_bandingfilter(struct ov5640_dev *sensor)
1992 {
1993         u32 band_step60, max_band60, band_step50, max_band50, prev_vts;
1994         int ret;
1995
1996         /* read preview PCLK */
1997         ret = ov5640_get_sysclk(sensor);
1998         if (ret < 0)
1999                 return ret;
2000         if (ret == 0)
2001                 return -EINVAL;
2002         sensor->prev_sysclk = ret;
2003         /* read preview HTS */
2004         ret = ov5640_get_hts(sensor);
2005         if (ret < 0)
2006                 return ret;
2007         if (ret == 0)
2008                 return -EINVAL;
2009         sensor->prev_hts = ret;
2010
2011         /* read preview VTS */
2012         ret = ov5640_get_vts(sensor);
2013         if (ret < 0)
2014                 return ret;
2015         prev_vts = ret;
2016
2017         /* calculate banding filter */
2018         /* 60Hz */
2019         band_step60 = sensor->prev_sysclk * 100 / sensor->prev_hts * 100 / 120;
2020         ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B60_STEP, band_step60);
2021         if (ret)
2022                 return ret;
2023         if (!band_step60)
2024                 return -EINVAL;
2025         max_band60 = (int)((prev_vts - 4) / band_step60);
2026         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0D, max_band60);
2027         if (ret)
2028                 return ret;
2029
2030         /* 50Hz */
2031         band_step50 = sensor->prev_sysclk * 100 / sensor->prev_hts;
2032         ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B50_STEP, band_step50);
2033         if (ret)
2034                 return ret;
2035         if (!band_step50)
2036                 return -EINVAL;
2037         max_band50 = (int)((prev_vts - 4) / band_step50);
2038         return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0E, max_band50);
2039 }
2040
2041 static int ov5640_set_ae_target(struct ov5640_dev *sensor, int target)
2042 {
2043         /* stable in high */
2044         u32 fast_high, fast_low;
2045         int ret;
2046
2047         sensor->ae_low = target * 23 / 25;      /* 0.92 */
2048         sensor->ae_high = target * 27 / 25;     /* 1.08 */
2049
2050         fast_high = sensor->ae_high << 1;
2051         if (fast_high > 255)
2052                 fast_high = 255;
2053
2054         fast_low = sensor->ae_low >> 1;
2055
2056         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0F, sensor->ae_high);
2057         if (ret)
2058                 return ret;
2059         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL10, sensor->ae_low);
2060         if (ret)
2061                 return ret;
2062         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1B, sensor->ae_high);
2063         if (ret)
2064                 return ret;
2065         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1E, sensor->ae_low);
2066         if (ret)
2067                 return ret;
2068         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL11, fast_high);
2069         if (ret)
2070                 return ret;
2071         return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1F, fast_low);
2072 }
2073
2074 static int ov5640_get_binning(struct ov5640_dev *sensor)
2075 {
2076         u8 temp;
2077         int ret;
2078
2079         ret = ov5640_read_reg(sensor, OV5640_REG_TIMING_TC_REG21, &temp);
2080         if (ret)
2081                 return ret;
2082
2083         return temp & BIT(0);
2084 }
2085
2086 static int ov5640_set_binning(struct ov5640_dev *sensor, bool enable)
2087 {
2088         int ret;
2089
2090         /*
2091          * TIMING TC REG21:
2092          * - [0]:       Horizontal binning enable
2093          */
2094         ret = ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
2095                              BIT(0), enable ? BIT(0) : 0);
2096         if (ret)
2097                 return ret;
2098         /*
2099          * TIMING TC REG20:
2100          * - [0]:       Undocumented, but hardcoded init sequences
2101          *              are always setting REG21/REG20 bit 0 to same value...
2102          */
2103         return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20,
2104                               BIT(0), enable ? BIT(0) : 0);
2105 }
2106
2107 static int ov5640_set_virtual_channel(struct ov5640_dev *sensor)
2108 {
2109         struct i2c_client *client = sensor->i2c_client;
2110         u8 temp, channel = virtual_channel;
2111         int ret;
2112
2113         if (channel > 3) {
2114                 dev_err(&client->dev,
2115                         "%s: wrong virtual_channel parameter, expected (0..3), got %d\n",
2116                         __func__, channel);
2117                 return -EINVAL;
2118         }
2119
2120         ret = ov5640_read_reg(sensor, OV5640_REG_DEBUG_MODE, &temp);
2121         if (ret)
2122                 return ret;
2123         temp &= ~(3 << 6);
2124         temp |= (channel << 6);
2125         return ov5640_write_reg(sensor, OV5640_REG_DEBUG_MODE, temp);
2126 }
2127
2128 static const struct ov5640_mode_info *
2129 ov5640_find_mode(struct ov5640_dev *sensor, int width, int height, bool nearest)
2130 {
2131         const struct ov5640_mode_info *mode;
2132
2133         mode = v4l2_find_nearest_size(ov5640_mode_data,
2134                                       ARRAY_SIZE(ov5640_mode_data),
2135                                       width, height, width, height);
2136
2137         if (!mode ||
2138             (!nearest &&
2139              (mode->width != width || mode->height != height)))
2140                 return NULL;
2141
2142         return mode;
2143 }
2144
2145 /*
2146  * sensor changes between scaling and subsampling, go through
2147  * exposure calculation
2148  */
2149 static int ov5640_set_mode_exposure_calc(struct ov5640_dev *sensor,
2150                                          const struct ov5640_mode_info *mode)
2151 {
2152         u32 prev_shutter, prev_gain16;
2153         u32 cap_shutter, cap_gain16;
2154         u32 cap_sysclk, cap_hts, cap_vts;
2155         u32 light_freq, cap_bandfilt, cap_maxband;
2156         u32 cap_gain16_shutter;
2157         u8 average;
2158         int ret;
2159
2160         if (!mode->reg_data)
2161                 return -EINVAL;
2162
2163         /* read preview shutter */
2164         ret = ov5640_get_exposure(sensor);
2165         if (ret < 0)
2166                 return ret;
2167         prev_shutter = ret;
2168         ret = ov5640_get_binning(sensor);
2169         if (ret < 0)
2170                 return ret;
2171         if (ret && mode->id != OV5640_MODE_720P_1280_720 &&
2172             mode->id != OV5640_MODE_1080P_1920_1080)
2173                 prev_shutter *= 2;
2174
2175         /* read preview gain */
2176         ret = ov5640_get_gain(sensor);
2177         if (ret < 0)
2178                 return ret;
2179         prev_gain16 = ret;
2180
2181         /* get average */
2182         ret = ov5640_read_reg(sensor, OV5640_REG_AVG_READOUT, &average);
2183         if (ret)
2184                 return ret;
2185
2186         /* turn off night mode for capture */
2187         ret = ov5640_set_night_mode(sensor);
2188         if (ret < 0)
2189                 return ret;
2190
2191         /* Write capture setting */
2192         ov5640_load_regs(sensor, mode->reg_data, mode->reg_data_size);
2193         ret = ov5640_set_timings(sensor, mode);
2194         if (ret < 0)
2195                 return ret;
2196
2197         /* read capture VTS */
2198         ret = ov5640_get_vts(sensor);
2199         if (ret < 0)
2200                 return ret;
2201         cap_vts = ret;
2202         ret = ov5640_get_hts(sensor);
2203         if (ret < 0)
2204                 return ret;
2205         if (ret == 0)
2206                 return -EINVAL;
2207         cap_hts = ret;
2208
2209         ret = ov5640_get_sysclk(sensor);
2210         if (ret < 0)
2211                 return ret;
2212         if (ret == 0)
2213                 return -EINVAL;
2214         cap_sysclk = ret;
2215
2216         /* calculate capture banding filter */
2217         ret = ov5640_get_light_freq(sensor);
2218         if (ret < 0)
2219                 return ret;
2220         light_freq = ret;
2221
2222         if (light_freq == 60) {
2223                 /* 60Hz */
2224                 cap_bandfilt = cap_sysclk * 100 / cap_hts * 100 / 120;
2225         } else {
2226                 /* 50Hz */
2227                 cap_bandfilt = cap_sysclk * 100 / cap_hts;
2228         }
2229
2230         if (!sensor->prev_sysclk) {
2231                 ret = ov5640_get_sysclk(sensor);
2232                 if (ret < 0)
2233                         return ret;
2234                 if (ret == 0)
2235                         return -EINVAL;
2236                 sensor->prev_sysclk = ret;
2237         }
2238
2239         if (!cap_bandfilt)
2240                 return -EINVAL;
2241
2242         cap_maxband = (int)((cap_vts - 4) / cap_bandfilt);
2243
2244         /* calculate capture shutter/gain16 */
2245         if (average > sensor->ae_low && average < sensor->ae_high) {
2246                 /* in stable range */
2247                 cap_gain16_shutter =
2248                         prev_gain16 * prev_shutter *
2249                         cap_sysclk / sensor->prev_sysclk *
2250                         sensor->prev_hts / cap_hts *
2251                         sensor->ae_target / average;
2252         } else {
2253                 cap_gain16_shutter =
2254                         prev_gain16 * prev_shutter *
2255                         cap_sysclk / sensor->prev_sysclk *
2256                         sensor->prev_hts / cap_hts;
2257         }
2258
2259         /* gain to shutter */
2260         if (cap_gain16_shutter < (cap_bandfilt * 16)) {
2261                 /* shutter < 1/100 */
2262                 cap_shutter = cap_gain16_shutter / 16;
2263                 if (cap_shutter < 1)
2264                         cap_shutter = 1;
2265
2266                 cap_gain16 = cap_gain16_shutter / cap_shutter;
2267                 if (cap_gain16 < 16)
2268                         cap_gain16 = 16;
2269         } else {
2270                 if (cap_gain16_shutter > (cap_bandfilt * cap_maxband * 16)) {
2271                         /* exposure reach max */
2272                         cap_shutter = cap_bandfilt * cap_maxband;
2273                         if (!cap_shutter)
2274                                 return -EINVAL;
2275
2276                         cap_gain16 = cap_gain16_shutter / cap_shutter;
2277                 } else {
2278                         /* 1/100 < (cap_shutter = n/100) =< max */
2279                         cap_shutter =
2280                                 ((int)(cap_gain16_shutter / 16 / cap_bandfilt))
2281                                 * cap_bandfilt;
2282                         if (!cap_shutter)
2283                                 return -EINVAL;
2284
2285                         cap_gain16 = cap_gain16_shutter / cap_shutter;
2286                 }
2287         }
2288
2289         /* set capture gain */
2290         ret = ov5640_set_gain(sensor, cap_gain16);
2291         if (ret)
2292                 return ret;
2293
2294         /* write capture shutter */
2295         if (cap_shutter > (cap_vts - 4)) {
2296                 cap_vts = cap_shutter + 4;
2297                 ret = ov5640_set_vts(sensor, cap_vts);
2298                 if (ret < 0)
2299                         return ret;
2300         }
2301
2302         /* set exposure */
2303         return ov5640_set_exposure(sensor, cap_shutter);
2304 }
2305
2306 /*
2307  * if sensor changes inside scaling or subsampling
2308  * change mode directly
2309  */
2310 static int ov5640_set_mode_direct(struct ov5640_dev *sensor,
2311                                   const struct ov5640_mode_info *mode)
2312 {
2313         if (!mode->reg_data)
2314                 return -EINVAL;
2315
2316         /* Write capture setting */
2317         ov5640_load_regs(sensor, mode->reg_data, mode->reg_data_size);
2318         return ov5640_set_timings(sensor, mode);
2319 }
2320
2321 static int ov5640_set_mode(struct ov5640_dev *sensor)
2322 {
2323         const struct ov5640_mode_info *mode = sensor->current_mode;
2324         const struct ov5640_mode_info *orig_mode = sensor->last_mode;
2325         enum ov5640_downsize_mode dn_mode, orig_dn_mode;
2326         bool auto_gain = sensor->ctrls.auto_gain->val == 1;
2327         bool auto_exp =  sensor->ctrls.auto_exp->val == V4L2_EXPOSURE_AUTO;
2328         int ret;
2329
2330         dn_mode = mode->dn_mode;
2331         orig_dn_mode = orig_mode->dn_mode;
2332
2333         /* auto gain and exposure must be turned off when changing modes */
2334         if (auto_gain) {
2335                 ret = ov5640_set_autogain(sensor, false);
2336                 if (ret)
2337                         return ret;
2338         }
2339
2340         if (auto_exp) {
2341                 ret = ov5640_set_autoexposure(sensor, false);
2342                 if (ret)
2343                         goto restore_auto_gain;
2344         }
2345
2346         if (ov5640_is_csi2(sensor))
2347                 ret = ov5640_set_mipi_pclk(sensor);
2348         else
2349                 ret = ov5640_set_dvp_pclk(sensor);
2350         if (ret < 0)
2351                 return 0;
2352
2353         if ((dn_mode == SUBSAMPLING && orig_dn_mode == SCALING) ||
2354             (dn_mode == SCALING && orig_dn_mode == SUBSAMPLING)) {
2355                 /*
2356                  * change between subsampling and scaling
2357                  * go through exposure calculation
2358                  */
2359                 ret = ov5640_set_mode_exposure_calc(sensor, mode);
2360         } else {
2361                 /*
2362                  * change inside subsampling or scaling
2363                  * download firmware directly
2364                  */
2365                 ret = ov5640_set_mode_direct(sensor, mode);
2366         }
2367         if (ret < 0)
2368                 goto restore_auto_exp_gain;
2369
2370         /* restore auto gain and exposure */
2371         if (auto_gain)
2372                 ov5640_set_autogain(sensor, true);
2373         if (auto_exp)
2374                 ov5640_set_autoexposure(sensor, true);
2375
2376         ret = ov5640_set_binning(sensor, dn_mode != SCALING);
2377         if (ret < 0)
2378                 return ret;
2379         ret = ov5640_set_ae_target(sensor, sensor->ae_target);
2380         if (ret < 0)
2381                 return ret;
2382         ret = ov5640_get_light_freq(sensor);
2383         if (ret < 0)
2384                 return ret;
2385         ret = ov5640_set_bandingfilter(sensor);
2386         if (ret < 0)
2387                 return ret;
2388         ret = ov5640_set_virtual_channel(sensor);
2389         if (ret < 0)
2390                 return ret;
2391
2392         sensor->pending_mode_change = false;
2393         sensor->last_mode = mode;
2394
2395         return 0;
2396
2397 restore_auto_exp_gain:
2398         if (auto_exp)
2399                 ov5640_set_autoexposure(sensor, true);
2400 restore_auto_gain:
2401         if (auto_gain)
2402                 ov5640_set_autogain(sensor, true);
2403
2404         return ret;
2405 }
2406
2407 static int ov5640_set_framefmt(struct ov5640_dev *sensor,
2408                                struct v4l2_mbus_framefmt *format);
2409
2410 /* restore the last set video mode after chip power-on */
2411 static int ov5640_restore_mode(struct ov5640_dev *sensor)
2412 {
2413         int ret;
2414
2415         /* first load the initial register values */
2416         ov5640_load_regs(sensor, ov5640_init_setting,
2417                          ARRAY_SIZE(ov5640_init_setting));
2418
2419         ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x3f,
2420                              (ilog2(OV5640_SCLK2X_ROOT_DIV) << 2) |
2421                              ilog2(OV5640_SCLK_ROOT_DIV));
2422         if (ret)
2423                 return ret;
2424
2425         /* now restore the last capture mode */
2426         ret = ov5640_set_mode(sensor);
2427         if (ret < 0)
2428                 return ret;
2429
2430         return ov5640_set_framefmt(sensor, &sensor->fmt);
2431 }
2432
2433 static void ov5640_power(struct ov5640_dev *sensor, bool enable)
2434 {
2435         gpiod_set_value_cansleep(sensor->pwdn_gpio, enable ? 0 : 1);
2436 }
2437
2438 /*
2439  * From section 2.7 power up sequence:
2440  * t0 + t1 + t2 >= 5ms  Delay from DOVDD stable to PWDN pull down
2441  * t3 >= 1ms            Delay from PWDN pull down to RESETB pull up
2442  * t4 >= 20ms           Delay from RESETB pull up to SCCB (i2c) stable
2443  *
2444  * Some modules don't expose RESETB/PWDN pins directly, instead providing a
2445  * "PWUP" GPIO which is wired through appropriate delays and inverters to the
2446  * pins.
2447  *
2448  * In such cases, this gpio should be mapped to pwdn_gpio in the driver, and we
2449  * should still toggle the pwdn_gpio below with the appropriate delays, while
2450  * the calls to reset_gpio will be ignored.
2451  */
2452 static void ov5640_powerup_sequence(struct ov5640_dev *sensor)
2453 {
2454         if (sensor->pwdn_gpio) {
2455                 gpiod_set_value_cansleep(sensor->reset_gpio, 1);
2456
2457                 /* camera power cycle */
2458                 ov5640_power(sensor, false);
2459                 usleep_range(5000, 10000);      /* t2 */
2460                 ov5640_power(sensor, true);
2461                 usleep_range(1000, 2000);       /* t3 */
2462
2463                 gpiod_set_value_cansleep(sensor->reset_gpio, 0);
2464         } else {
2465                 /* software reset */
2466                 ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0,
2467                                  OV5640_REG_SYS_CTRL0_SW_RST);
2468         }
2469         usleep_range(20000, 25000);     /* t4 */
2470
2471         /*
2472          * software standby: allows registers programming;
2473          * exit at restore_mode() for CSI, s_stream(1) for DVP
2474          */
2475         ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0,
2476                          OV5640_REG_SYS_CTRL0_SW_PWDN);
2477 }
2478
2479 static int ov5640_set_power_on(struct ov5640_dev *sensor)
2480 {
2481         struct i2c_client *client = sensor->i2c_client;
2482         int ret;
2483
2484         ret = clk_prepare_enable(sensor->xclk);
2485         if (ret) {
2486                 dev_err(&client->dev, "%s: failed to enable clock\n",
2487                         __func__);
2488                 return ret;
2489         }
2490
2491         ret = regulator_bulk_enable(OV5640_NUM_SUPPLIES,
2492                                     sensor->supplies);
2493         if (ret) {
2494                 dev_err(&client->dev, "%s: failed to enable regulators\n",
2495                         __func__);
2496                 goto xclk_off;
2497         }
2498
2499         ov5640_powerup_sequence(sensor);
2500
2501         ret = ov5640_init_slave_id(sensor);
2502         if (ret)
2503                 goto power_off;
2504
2505         return 0;
2506
2507 power_off:
2508         ov5640_power(sensor, false);
2509         regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies);
2510 xclk_off:
2511         clk_disable_unprepare(sensor->xclk);
2512         return ret;
2513 }
2514
2515 static void ov5640_set_power_off(struct ov5640_dev *sensor)
2516 {
2517         ov5640_power(sensor, false);
2518         regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies);
2519         clk_disable_unprepare(sensor->xclk);
2520 }
2521
2522 static int ov5640_set_power_mipi(struct ov5640_dev *sensor, bool on)
2523 {
2524         int ret;
2525
2526         if (!on) {
2527                 /* Reset MIPI bus settings to their default values. */
2528                 ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x58);
2529                 ov5640_write_reg(sensor, OV5640_REG_MIPI_CTRL00, 0x04);
2530                 ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT00, 0x00);
2531                 return 0;
2532         }
2533
2534         /*
2535          * Power up MIPI HS Tx and LS Rx; 2 data lanes mode
2536          *
2537          * 0x300e = 0x40
2538          * [7:5] = 010  : 2 data lanes mode (see FIXME note in
2539          *                "ov5640_set_stream_mipi()")
2540          * [4] = 0      : Power up MIPI HS Tx
2541          * [3] = 0      : Power up MIPI LS Rx
2542          * [2] = 1      : MIPI interface enabled
2543          */
2544         ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x44);
2545         if (ret)
2546                 return ret;
2547
2548         /*
2549          * Gate clock and set LP11 in 'no packets mode' (idle)
2550          *
2551          * 0x4800 = 0x24
2552          * [5] = 1      : Gate clock when 'no packets'
2553          * [2] = 1      : MIPI bus in LP11 when 'no packets'
2554          */
2555         ret = ov5640_write_reg(sensor, OV5640_REG_MIPI_CTRL00, 0x24);
2556         if (ret)
2557                 return ret;
2558
2559         /*
2560          * Set data lanes and clock in LP11 when 'sleeping'
2561          *
2562          * 0x3019 = 0x70
2563          * [6] = 1      : MIPI data lane 2 in LP11 when 'sleeping'
2564          * [5] = 1      : MIPI data lane 1 in LP11 when 'sleeping'
2565          * [4] = 1      : MIPI clock lane in LP11 when 'sleeping'
2566          */
2567         ret = ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT00, 0x70);
2568         if (ret)
2569                 return ret;
2570
2571         /* Give lanes some time to coax into LP11 state. */
2572         usleep_range(500, 1000);
2573
2574         return 0;
2575 }
2576
2577 static int ov5640_set_power_dvp(struct ov5640_dev *sensor, bool on)
2578 {
2579         unsigned int flags = sensor->ep.bus.parallel.flags;
2580         bool bt656 = sensor->ep.bus_type == V4L2_MBUS_BT656;
2581         u8 polarities = 0;
2582         int ret;
2583
2584         if (!on) {
2585                 /* Reset settings to their default values. */
2586                 ov5640_write_reg(sensor, OV5640_REG_CCIR656_CTRL00, 0x00);
2587                 ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x58);
2588                 ov5640_write_reg(sensor, OV5640_REG_POLARITY_CTRL00, 0x20);
2589                 ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE01, 0x00);
2590                 ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE02, 0x00);
2591                 return 0;
2592         }
2593
2594         /*
2595          * Note about parallel port configuration.
2596          *
2597          * When configured in parallel mode, the OV5640 will
2598          * output 10 bits data on DVP data lines [9:0].
2599          * If only 8 bits data are wanted, the 8 bits data lines
2600          * of the camera interface must be physically connected
2601          * on the DVP data lines [9:2].
2602          *
2603          * Control lines polarity can be configured through
2604          * devicetree endpoint control lines properties.
2605          * If no endpoint control lines properties are set,
2606          * polarity will be as below:
2607          * - VSYNC:     active high
2608          * - HREF:      active low
2609          * - PCLK:      active low
2610          *
2611          * VSYNC & HREF are not configured if BT656 bus mode is selected
2612          */
2613
2614         /*
2615          * BT656 embedded synchronization configuration
2616          *
2617          * CCIR656 CTRL00
2618          * - [7]:       SYNC code selection (0: auto generate sync code,
2619          *              1: sync code from regs 0x4732-0x4735)
2620          * - [6]:       f value in CCIR656 SYNC code when fixed f value
2621          * - [5]:       Fixed f value
2622          * - [4:3]:     Blank toggle data options (00: data=1'h040/1'h200,
2623          *              01: data from regs 0x4736-0x4738, 10: always keep 0)
2624          * - [1]:       Clip data disable
2625          * - [0]:       CCIR656 mode enable
2626          *
2627          * Default CCIR656 SAV/EAV mode with default codes
2628          * SAV=0xff000080 & EAV=0xff00009d is enabled here with settings:
2629          * - CCIR656 mode enable
2630          * - auto generation of sync codes
2631          * - blank toggle data 1'h040/1'h200
2632          * - clip reserved data (0x00 & 0xff changed to 0x01 & 0xfe)
2633          */
2634         ret = ov5640_write_reg(sensor, OV5640_REG_CCIR656_CTRL00,
2635                                bt656 ? 0x01 : 0x00);
2636         if (ret)
2637                 return ret;
2638
2639         /*
2640          * configure parallel port control lines polarity
2641          *
2642          * POLARITY CTRL0
2643          * - [5]:       PCLK polarity (0: active low, 1: active high)
2644          * - [1]:       HREF polarity (0: active low, 1: active high)
2645          * - [0]:       VSYNC polarity (mismatch here between
2646          *              datasheet and hardware, 0 is active high
2647          *              and 1 is active low...)
2648          */
2649         if (!bt656) {
2650                 if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
2651                         polarities |= BIT(1);
2652                 if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
2653                         polarities |= BIT(0);
2654         }
2655         if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
2656                 polarities |= BIT(5);
2657
2658         ret = ov5640_write_reg(sensor, OV5640_REG_POLARITY_CTRL00, polarities);
2659         if (ret)
2660                 return ret;
2661
2662         /*
2663          * powerdown MIPI TX/RX PHY & enable DVP
2664          *
2665          * MIPI CONTROL 00
2666          * [4] = 1      : Power down MIPI HS Tx
2667          * [3] = 1      : Power down MIPI LS Rx
2668          * [2] = 0      : DVP enable (MIPI disable)
2669          */
2670         ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x18);
2671         if (ret)
2672                 return ret;
2673
2674         /*
2675          * enable VSYNC/HREF/PCLK DVP control lines
2676          * & D[9:6] DVP data lines
2677          *
2678          * PAD OUTPUT ENABLE 01
2679          * - 6:         VSYNC output enable
2680          * - 5:         HREF output enable
2681          * - 4:         PCLK output enable
2682          * - [3:0]:     D[9:6] output enable
2683          */
2684         ret = ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE01,
2685                                bt656 ? 0x1f : 0x7f);
2686         if (ret)
2687                 return ret;
2688
2689         /*
2690          * enable D[5:0] DVP data lines
2691          *
2692          * PAD OUTPUT ENABLE 02
2693          * - [7:2]:     D[5:0] output enable
2694          */
2695         return ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE02, 0xfc);
2696 }
2697
2698 static int ov5640_set_power(struct ov5640_dev *sensor, bool on)
2699 {
2700         int ret = 0;
2701
2702         if (on) {
2703                 ret = ov5640_set_power_on(sensor);
2704                 if (ret)
2705                         return ret;
2706
2707                 ret = ov5640_restore_mode(sensor);
2708                 if (ret)
2709                         goto power_off;
2710         }
2711
2712         if (sensor->ep.bus_type == V4L2_MBUS_CSI2_DPHY)
2713                 ret = ov5640_set_power_mipi(sensor, on);
2714         else
2715                 ret = ov5640_set_power_dvp(sensor, on);
2716         if (ret)
2717                 goto power_off;
2718
2719         if (!on)
2720                 ov5640_set_power_off(sensor);
2721
2722         return 0;
2723
2724 power_off:
2725         ov5640_set_power_off(sensor);
2726         return ret;
2727 }
2728
2729 static int ov5640_sensor_suspend(struct device *dev)
2730 {
2731         struct v4l2_subdev *sd = dev_get_drvdata(dev);
2732         struct ov5640_dev *ov5640 = to_ov5640_dev(sd);
2733
2734         return ov5640_set_power(ov5640, false);
2735 }
2736
2737 static int ov5640_sensor_resume(struct device *dev)
2738 {
2739         struct v4l2_subdev *sd = dev_get_drvdata(dev);
2740         struct ov5640_dev *ov5640 = to_ov5640_dev(sd);
2741
2742         return ov5640_set_power(ov5640, true);
2743 }
2744
2745 /* --------------- Subdev Operations --------------- */
2746
2747 static int ov5640_try_frame_interval(struct ov5640_dev *sensor,
2748                                      struct v4l2_fract *fi,
2749                                      const struct ov5640_mode_info *mode_info)
2750 {
2751         const struct ov5640_mode_info *mode = mode_info;
2752         enum ov5640_frame_rate rate = OV5640_15_FPS;
2753         int minfps, maxfps, best_fps, fps;
2754         int i;
2755
2756         minfps = ov5640_framerates[OV5640_15_FPS];
2757         maxfps = ov5640_framerates[mode->max_fps];
2758
2759         if (fi->numerator == 0) {
2760                 fi->denominator = maxfps;
2761                 fi->numerator = 1;
2762                 rate = mode->max_fps;
2763                 goto find_mode;
2764         }
2765
2766         fps = clamp_val(DIV_ROUND_CLOSEST(fi->denominator, fi->numerator),
2767                         minfps, maxfps);
2768
2769         best_fps = minfps;
2770         for (i = 0; i < ARRAY_SIZE(ov5640_framerates); i++) {
2771                 int curr_fps = ov5640_framerates[i];
2772
2773                 if (abs(curr_fps - fps) < abs(best_fps - fps)) {
2774                         best_fps = curr_fps;
2775                         rate = i;
2776                 }
2777         }
2778
2779         fi->numerator = 1;
2780         fi->denominator = best_fps;
2781
2782 find_mode:
2783         mode = ov5640_find_mode(sensor, mode->width, mode->height, false);
2784         return mode ? rate : -EINVAL;
2785 }
2786
2787 static int ov5640_get_fmt(struct v4l2_subdev *sd,
2788                           struct v4l2_subdev_state *sd_state,
2789                           struct v4l2_subdev_format *format)
2790 {
2791         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2792         struct v4l2_mbus_framefmt *fmt;
2793
2794         if (format->pad != 0)
2795                 return -EINVAL;
2796
2797         mutex_lock(&sensor->lock);
2798
2799         if (format->which == V4L2_SUBDEV_FORMAT_TRY)
2800                 fmt = v4l2_subdev_get_try_format(&sensor->sd, sd_state,
2801                                                  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
2812 static 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
2853 static 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
2863 static 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
2950 static 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_get_try_format(sd, 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
2991 out:
2992         mutex_unlock(&sensor->lock);
2993         return ret;
2994 }
2995
2996 static 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
3035 static 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
3091 static 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
3108 static 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
3126 static 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
3148 static 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
3170 static 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
3203 static 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
3220 static 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
3241 static 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
3251 static 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
3257 static 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
3272 static 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
3294 static 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
3309 static 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
3318 static 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_mark_last_busy(&sensor->i2c_client->dev);
3345         pm_runtime_put_autosuspend(&sensor->i2c_client->dev);
3346
3347         return 0;
3348 }
3349
3350 static int ov5640_s_ctrl(struct v4l2_ctrl *ctrl)
3351 {
3352         struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
3353         struct ov5640_dev *sensor = to_ov5640_dev(sd);
3354         const struct ov5640_mode_info *mode = sensor->current_mode;
3355         const struct ov5640_timings *timings;
3356         unsigned int exp_max;
3357         int ret;
3358
3359         /* v4l2_ctrl_lock() locks our own mutex */
3360
3361         switch (ctrl->id) {
3362         case V4L2_CID_VBLANK:
3363                 /* Update the exposure range to the newly programmed vblank. */
3364                 timings = ov5640_timings(sensor, mode);
3365                 exp_max = mode->height + ctrl->val - 4;
3366                 __v4l2_ctrl_modify_range(sensor->ctrls.exposure,
3367                                          sensor->ctrls.exposure->minimum,
3368                                          exp_max, sensor->ctrls.exposure->step,
3369                                          timings->vblank_def);
3370                 break;
3371         }
3372
3373         /*
3374          * If the device is not powered up by the host driver do
3375          * not apply any controls to H/W at this time. Instead
3376          * the controls will be restored at start streaming time.
3377          */
3378         if (!pm_runtime_get_if_in_use(&sensor->i2c_client->dev))
3379                 return 0;
3380
3381         switch (ctrl->id) {
3382         case V4L2_CID_AUTOGAIN:
3383                 ret = ov5640_set_ctrl_gain(sensor, ctrl->val);
3384                 break;
3385         case V4L2_CID_EXPOSURE_AUTO:
3386                 ret = ov5640_set_ctrl_exposure(sensor, ctrl->val);
3387                 break;
3388         case V4L2_CID_AUTO_WHITE_BALANCE:
3389                 ret = ov5640_set_ctrl_white_balance(sensor, ctrl->val);
3390                 break;
3391         case V4L2_CID_HUE:
3392                 ret = ov5640_set_ctrl_hue(sensor, ctrl->val);
3393                 break;
3394         case V4L2_CID_CONTRAST:
3395                 ret = ov5640_set_ctrl_contrast(sensor, ctrl->val);
3396                 break;
3397         case V4L2_CID_SATURATION:
3398                 ret = ov5640_set_ctrl_saturation(sensor, ctrl->val);
3399                 break;
3400         case V4L2_CID_TEST_PATTERN:
3401                 ret = ov5640_set_ctrl_test_pattern(sensor, ctrl->val);
3402                 break;
3403         case V4L2_CID_POWER_LINE_FREQUENCY:
3404                 ret = ov5640_set_ctrl_light_freq(sensor, ctrl->val);
3405                 break;
3406         case V4L2_CID_HFLIP:
3407                 ret = ov5640_set_ctrl_hflip(sensor, ctrl->val);
3408                 break;
3409         case V4L2_CID_VFLIP:
3410                 ret = ov5640_set_ctrl_vflip(sensor, ctrl->val);
3411                 break;
3412         case V4L2_CID_VBLANK:
3413                 ret = ov5640_set_ctrl_vblank(sensor, ctrl->val);
3414                 break;
3415         default:
3416                 ret = -EINVAL;
3417                 break;
3418         }
3419
3420         pm_runtime_mark_last_busy(&sensor->i2c_client->dev);
3421         pm_runtime_put_autosuspend(&sensor->i2c_client->dev);
3422
3423         return ret;
3424 }
3425
3426 static const struct v4l2_ctrl_ops ov5640_ctrl_ops = {
3427         .g_volatile_ctrl = ov5640_g_volatile_ctrl,
3428         .s_ctrl = ov5640_s_ctrl,
3429 };
3430
3431 static int ov5640_init_controls(struct ov5640_dev *sensor)
3432 {
3433         const struct ov5640_mode_info *mode = sensor->current_mode;
3434         const struct v4l2_ctrl_ops *ops = &ov5640_ctrl_ops;
3435         struct ov5640_ctrls *ctrls = &sensor->ctrls;
3436         struct v4l2_ctrl_handler *hdl = &ctrls->handler;
3437         struct v4l2_fwnode_device_properties props;
3438         const struct ov5640_timings *timings;
3439         unsigned int max_vblank;
3440         unsigned int hblank;
3441         int ret;
3442
3443         v4l2_ctrl_handler_init(hdl, 32);
3444
3445         /* we can use our own mutex for the ctrl lock */
3446         hdl->lock = &sensor->lock;
3447
3448         /* Clock related controls */
3449         ctrls->pixel_rate = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_PIXEL_RATE,
3450                               ov5640_pixel_rates[OV5640_NUM_PIXEL_RATES - 1],
3451                               ov5640_pixel_rates[0], 1,
3452                               ov5640_pixel_rates[mode->pixel_rate]);
3453
3454         ctrls->link_freq = v4l2_ctrl_new_int_menu(hdl, ops,
3455                                         V4L2_CID_LINK_FREQ,
3456                                         ARRAY_SIZE(ov5640_csi2_link_freqs) - 1,
3457                                         OV5640_DEFAULT_LINK_FREQ,
3458                                         ov5640_csi2_link_freqs);
3459
3460         timings = ov5640_timings(sensor, mode);
3461         hblank = timings->htot - mode->width;
3462         ctrls->hblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK, hblank,
3463                                           hblank, 1, hblank);
3464
3465         max_vblank = OV5640_MAX_VTS - mode->height;
3466         ctrls->vblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK,
3467                                           OV5640_MIN_VBLANK, max_vblank,
3468                                           1, timings->vblank_def);
3469
3470         /* Auto/manual white balance */
3471         ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops,
3472                                            V4L2_CID_AUTO_WHITE_BALANCE,
3473                                            0, 1, 1, 1);
3474         ctrls->blue_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BLUE_BALANCE,
3475                                                 0, 4095, 1, 0);
3476         ctrls->red_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_RED_BALANCE,
3477                                                0, 4095, 1, 0);
3478         /* Auto/manual exposure */
3479         ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops,
3480                                                  V4L2_CID_EXPOSURE_AUTO,
3481                                                  V4L2_EXPOSURE_MANUAL, 0,
3482                                                  V4L2_EXPOSURE_AUTO);
3483         ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
3484                                             0, 65535, 1, 0);
3485         /* Auto/manual gain */
3486         ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTOGAIN,
3487                                              0, 1, 1, 1);
3488         ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN,
3489                                         0, 1023, 1, 0);
3490
3491         ctrls->saturation = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION,
3492                                               0, 255, 1, 64);
3493         ctrls->hue = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HUE,
3494                                        0, 359, 1, 0);
3495         ctrls->contrast = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST,
3496                                             0, 255, 1, 0);
3497         ctrls->test_pattern =
3498                 v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
3499                                              ARRAY_SIZE(test_pattern_menu) - 1,
3500                                              0, 0, test_pattern_menu);
3501         ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP,
3502                                          0, 1, 1, 0);
3503         ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP,
3504                                          0, 1, 1, 0);
3505
3506         ctrls->light_freq =
3507                 v4l2_ctrl_new_std_menu(hdl, ops,
3508                                        V4L2_CID_POWER_LINE_FREQUENCY,
3509                                        V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
3510                                        V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
3511
3512         if (hdl->error) {
3513                 ret = hdl->error;
3514                 goto free_ctrls;
3515         }
3516
3517         ret = v4l2_fwnode_device_parse(&sensor->i2c_client->dev, &props);
3518         if (ret)
3519                 goto free_ctrls;
3520
3521         if (props.rotation == 180)
3522                 sensor->upside_down = true;
3523
3524         ret = v4l2_ctrl_new_fwnode_properties(hdl, ops, &props);
3525         if (ret)
3526                 goto free_ctrls;
3527
3528         ctrls->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY;
3529         ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
3530         ctrls->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
3531         ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
3532         ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
3533
3534         v4l2_ctrl_auto_cluster(3, &ctrls->auto_wb, 0, false);
3535         v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true);
3536         v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp, 1, true);
3537
3538         sensor->sd.ctrl_handler = hdl;
3539         return 0;
3540
3541 free_ctrls:
3542         v4l2_ctrl_handler_free(hdl);
3543         return ret;
3544 }
3545
3546 static int ov5640_enum_frame_size(struct v4l2_subdev *sd,
3547                                   struct v4l2_subdev_state *sd_state,
3548                                   struct v4l2_subdev_frame_size_enum *fse)
3549 {
3550         struct ov5640_dev *sensor = to_ov5640_dev(sd);
3551         u32 bpp = ov5640_code_to_bpp(sensor, fse->code);
3552         unsigned int index = fse->index;
3553
3554         if (fse->pad != 0)
3555                 return -EINVAL;
3556         if (!bpp)
3557                 return -EINVAL;
3558
3559         /* Only low-resolution modes are supported for 24bpp formats. */
3560         if (bpp == 24 && index >= OV5640_MODE_720P_1280_720)
3561                 return -EINVAL;
3562
3563         /* FIXME: Low resolution modes don't work in 8bpp formats. */
3564         if (bpp == 8)
3565                 index += OV5640_MODE_720P_1280_720;
3566
3567         if (index >= OV5640_NUM_MODES)
3568                 return -EINVAL;
3569
3570         fse->min_width = ov5640_mode_data[index].width;
3571         fse->max_width = fse->min_width;
3572         fse->min_height = ov5640_mode_data[index].height;
3573         fse->max_height = fse->min_height;
3574
3575         return 0;
3576 }
3577
3578 static int ov5640_enum_frame_interval(
3579         struct v4l2_subdev *sd,
3580         struct v4l2_subdev_state *sd_state,
3581         struct v4l2_subdev_frame_interval_enum *fie)
3582 {
3583         struct ov5640_dev *sensor = to_ov5640_dev(sd);
3584         const struct ov5640_mode_info *mode;
3585         struct v4l2_fract tpf;
3586         int ret;
3587
3588         if (fie->pad != 0)
3589                 return -EINVAL;
3590         if (fie->index >= OV5640_NUM_FRAMERATES)
3591                 return -EINVAL;
3592
3593         mode = ov5640_find_mode(sensor, fie->width, fie->height, false);
3594         if (!mode)
3595                 return -EINVAL;
3596
3597         tpf.numerator = 1;
3598         tpf.denominator = ov5640_framerates[fie->index];
3599
3600         ret = ov5640_try_frame_interval(sensor, &tpf, mode);
3601         if (ret < 0)
3602                 return -EINVAL;
3603
3604         fie->interval = tpf;
3605         return 0;
3606 }
3607
3608 static int ov5640_g_frame_interval(struct v4l2_subdev *sd,
3609                                    struct v4l2_subdev_frame_interval *fi)
3610 {
3611         struct ov5640_dev *sensor = to_ov5640_dev(sd);
3612
3613         mutex_lock(&sensor->lock);
3614         fi->interval = sensor->frame_interval;
3615         mutex_unlock(&sensor->lock);
3616
3617         return 0;
3618 }
3619
3620 static int ov5640_s_frame_interval(struct v4l2_subdev *sd,
3621                                    struct v4l2_subdev_frame_interval *fi)
3622 {
3623         struct ov5640_dev *sensor = to_ov5640_dev(sd);
3624         const struct ov5640_mode_info *mode;
3625         int frame_rate, ret = 0;
3626
3627         if (fi->pad != 0)
3628                 return -EINVAL;
3629
3630         mutex_lock(&sensor->lock);
3631
3632         if (sensor->streaming) {
3633                 ret = -EBUSY;
3634                 goto out;
3635         }
3636
3637         mode = sensor->current_mode;
3638
3639         frame_rate = ov5640_try_frame_interval(sensor, &fi->interval, mode);
3640         if (frame_rate < 0) {
3641                 /* Always return a valid frame interval value */
3642                 fi->interval = sensor->frame_interval;
3643                 goto out;
3644         }
3645
3646         mode = ov5640_find_mode(sensor, mode->width, mode->height, true);
3647         if (!mode) {
3648                 ret = -EINVAL;
3649                 goto out;
3650         }
3651
3652         if (ov5640_framerates[frame_rate] > ov5640_framerates[mode->max_fps]) {
3653                 ret = -EINVAL;
3654                 goto out;
3655         }
3656
3657         if (mode != sensor->current_mode ||
3658             frame_rate != sensor->current_fr) {
3659                 sensor->current_fr = frame_rate;
3660                 sensor->frame_interval = fi->interval;
3661                 sensor->current_mode = mode;
3662                 sensor->pending_mode_change = true;
3663
3664                 ov5640_update_pixel_rate(sensor);
3665         }
3666 out:
3667         mutex_unlock(&sensor->lock);
3668         return ret;
3669 }
3670
3671 static int ov5640_enum_mbus_code(struct v4l2_subdev *sd,
3672                                  struct v4l2_subdev_state *sd_state,
3673                                  struct v4l2_subdev_mbus_code_enum *code)
3674 {
3675         struct ov5640_dev *sensor = to_ov5640_dev(sd);
3676         const struct ov5640_pixfmt *formats;
3677         unsigned int num_formats;
3678
3679         if (ov5640_is_csi2(sensor)) {
3680                 formats = ov5640_csi2_formats;
3681                 num_formats = ARRAY_SIZE(ov5640_csi2_formats) - 1;
3682         } else {
3683                 formats = ov5640_dvp_formats;
3684                 num_formats = ARRAY_SIZE(ov5640_dvp_formats) - 1;
3685         }
3686
3687         if (code->index >= num_formats)
3688                 return -EINVAL;
3689
3690         code->code = formats[code->index].code;
3691
3692         return 0;
3693 }
3694
3695 static int ov5640_s_stream(struct v4l2_subdev *sd, int enable)
3696 {
3697         struct ov5640_dev *sensor = to_ov5640_dev(sd);
3698         int ret = 0;
3699
3700         if (enable) {
3701                 ret = pm_runtime_resume_and_get(&sensor->i2c_client->dev);
3702                 if (ret < 0)
3703                         return ret;
3704
3705                 ret = v4l2_ctrl_handler_setup(&sensor->ctrls.handler);
3706                 if (ret) {
3707                         pm_runtime_put(&sensor->i2c_client->dev);
3708                         return ret;
3709                 }
3710         }
3711
3712         mutex_lock(&sensor->lock);
3713
3714         if (sensor->streaming == !enable) {
3715                 if (enable && sensor->pending_mode_change) {
3716                         ret = ov5640_set_mode(sensor);
3717                         if (ret)
3718                                 goto out;
3719                 }
3720
3721                 if (enable && sensor->pending_fmt_change) {
3722                         ret = ov5640_set_framefmt(sensor, &sensor->fmt);
3723                         if (ret)
3724                                 goto out;
3725                         sensor->pending_fmt_change = false;
3726                 }
3727
3728                 if (ov5640_is_csi2(sensor))
3729                         ret = ov5640_set_stream_mipi(sensor, enable);
3730                 else
3731                         ret = ov5640_set_stream_dvp(sensor, enable);
3732
3733                 if (!ret)
3734                         sensor->streaming = enable;
3735         }
3736
3737 out:
3738         mutex_unlock(&sensor->lock);
3739
3740         if (!enable || ret) {
3741                 pm_runtime_mark_last_busy(&sensor->i2c_client->dev);
3742                 pm_runtime_put_autosuspend(&sensor->i2c_client->dev);
3743         }
3744
3745         return ret;
3746 }
3747
3748 static int ov5640_init_cfg(struct v4l2_subdev *sd,
3749                            struct v4l2_subdev_state *state)
3750 {
3751         struct ov5640_dev *sensor = to_ov5640_dev(sd);
3752         struct v4l2_mbus_framefmt *fmt =
3753                                 v4l2_subdev_get_try_format(sd, state, 0);
3754         struct v4l2_rect *crop = v4l2_subdev_get_try_crop(sd, state, 0);
3755
3756         *fmt = ov5640_is_csi2(sensor) ? ov5640_csi2_default_fmt :
3757                                         ov5640_dvp_default_fmt;
3758
3759         crop->left = OV5640_PIXEL_ARRAY_LEFT;
3760         crop->top = OV5640_PIXEL_ARRAY_TOP;
3761         crop->width = OV5640_PIXEL_ARRAY_WIDTH;
3762         crop->height = OV5640_PIXEL_ARRAY_HEIGHT;
3763
3764         return 0;
3765 }
3766
3767 static const struct v4l2_subdev_core_ops ov5640_core_ops = {
3768         .log_status = v4l2_ctrl_subdev_log_status,
3769         .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
3770         .unsubscribe_event = v4l2_event_subdev_unsubscribe,
3771 };
3772
3773 static const struct v4l2_subdev_video_ops ov5640_video_ops = {
3774         .g_frame_interval = ov5640_g_frame_interval,
3775         .s_frame_interval = ov5640_s_frame_interval,
3776         .s_stream = ov5640_s_stream,
3777 };
3778
3779 static const struct v4l2_subdev_pad_ops ov5640_pad_ops = {
3780         .init_cfg = ov5640_init_cfg,
3781         .enum_mbus_code = ov5640_enum_mbus_code,
3782         .get_fmt = ov5640_get_fmt,
3783         .set_fmt = ov5640_set_fmt,
3784         .get_selection = ov5640_get_selection,
3785         .enum_frame_size = ov5640_enum_frame_size,
3786         .enum_frame_interval = ov5640_enum_frame_interval,
3787 };
3788
3789 static const struct v4l2_subdev_ops ov5640_subdev_ops = {
3790         .core = &ov5640_core_ops,
3791         .video = &ov5640_video_ops,
3792         .pad = &ov5640_pad_ops,
3793 };
3794
3795 static int ov5640_get_regulators(struct ov5640_dev *sensor)
3796 {
3797         int i;
3798
3799         for (i = 0; i < OV5640_NUM_SUPPLIES; i++)
3800                 sensor->supplies[i].supply = ov5640_supply_name[i];
3801
3802         return devm_regulator_bulk_get(&sensor->i2c_client->dev,
3803                                        OV5640_NUM_SUPPLIES,
3804                                        sensor->supplies);
3805 }
3806
3807 static int ov5640_check_chip_id(struct ov5640_dev *sensor)
3808 {
3809         struct i2c_client *client = sensor->i2c_client;
3810         int ret = 0;
3811         u16 chip_id;
3812
3813         ret = ov5640_read_reg16(sensor, OV5640_REG_CHIP_ID, &chip_id);
3814         if (ret) {
3815                 dev_err(&client->dev, "%s: failed to read chip identifier\n",
3816                         __func__);
3817                 return ret;
3818         }
3819
3820         if (chip_id != 0x5640) {
3821                 dev_err(&client->dev, "%s: wrong chip identifier, expected 0x5640, got 0x%x\n",
3822                         __func__, chip_id);
3823                 return -ENXIO;
3824         }
3825
3826         return 0;
3827 }
3828
3829 static int ov5640_probe(struct i2c_client *client)
3830 {
3831         struct device *dev = &client->dev;
3832         struct fwnode_handle *endpoint;
3833         struct ov5640_dev *sensor;
3834         int ret;
3835
3836         sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
3837         if (!sensor)
3838                 return -ENOMEM;
3839
3840         sensor->i2c_client = client;
3841
3842         /*
3843          * default init sequence initialize sensor to
3844          * YUV422 UYVY VGA(30FPS in parallel mode, 60 in MIPI CSI-2 mode)
3845          */
3846         sensor->frame_interval.numerator = 1;
3847         sensor->frame_interval.denominator = ov5640_framerates[OV5640_30_FPS];
3848         sensor->current_fr = OV5640_30_FPS;
3849         sensor->current_mode =
3850                 &ov5640_mode_data[OV5640_MODE_VGA_640_480];
3851         sensor->last_mode = sensor->current_mode;
3852         sensor->current_link_freq =
3853                 ov5640_csi2_link_freqs[OV5640_DEFAULT_LINK_FREQ];
3854
3855         sensor->ae_target = 52;
3856
3857         endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev),
3858                                                   NULL);
3859         if (!endpoint) {
3860                 dev_err(dev, "endpoint node not found\n");
3861                 return -EINVAL;
3862         }
3863
3864         ret = v4l2_fwnode_endpoint_parse(endpoint, &sensor->ep);
3865         fwnode_handle_put(endpoint);
3866         if (ret) {
3867                 dev_err(dev, "Could not parse endpoint\n");
3868                 return ret;
3869         }
3870
3871         if (sensor->ep.bus_type != V4L2_MBUS_PARALLEL &&
3872             sensor->ep.bus_type != V4L2_MBUS_CSI2_DPHY &&
3873             sensor->ep.bus_type != V4L2_MBUS_BT656) {
3874                 dev_err(dev, "Unsupported bus type %d\n", sensor->ep.bus_type);
3875                 return -EINVAL;
3876         }
3877
3878         sensor->fmt = ov5640_is_csi2(sensor) ? ov5640_csi2_default_fmt :
3879                                                ov5640_dvp_default_fmt;
3880
3881         /* get system clock (xclk) */
3882         sensor->xclk = devm_clk_get(dev, "xclk");
3883         if (IS_ERR(sensor->xclk)) {
3884                 dev_err(dev, "failed to get xclk\n");
3885                 return PTR_ERR(sensor->xclk);
3886         }
3887
3888         sensor->xclk_freq = clk_get_rate(sensor->xclk);
3889         if (sensor->xclk_freq < OV5640_XCLK_MIN ||
3890             sensor->xclk_freq > OV5640_XCLK_MAX) {
3891                 dev_err(dev, "xclk frequency out of range: %d Hz\n",
3892                         sensor->xclk_freq);
3893                 return -EINVAL;
3894         }
3895
3896         /* request optional power down pin */
3897         sensor->pwdn_gpio = devm_gpiod_get_optional(dev, "powerdown",
3898                                                     GPIOD_OUT_HIGH);
3899         if (IS_ERR(sensor->pwdn_gpio))
3900                 return PTR_ERR(sensor->pwdn_gpio);
3901
3902         /* request optional reset pin */
3903         sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset",
3904                                                      GPIOD_OUT_HIGH);
3905         if (IS_ERR(sensor->reset_gpio))
3906                 return PTR_ERR(sensor->reset_gpio);
3907
3908         v4l2_i2c_subdev_init(&sensor->sd, client, &ov5640_subdev_ops);
3909
3910         sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
3911                             V4L2_SUBDEV_FL_HAS_EVENTS;
3912         sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
3913         sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
3914         ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
3915         if (ret)
3916                 return ret;
3917
3918         ret = ov5640_get_regulators(sensor);
3919         if (ret)
3920                 goto entity_cleanup;
3921
3922         mutex_init(&sensor->lock);
3923
3924         ret = ov5640_init_controls(sensor);
3925         if (ret)
3926                 goto entity_cleanup;
3927
3928         ret = ov5640_sensor_resume(dev);
3929         if (ret) {
3930                 dev_err(dev, "failed to power on\n");
3931                 goto free_ctrls;
3932         }
3933
3934         pm_runtime_set_active(dev);
3935         pm_runtime_get_noresume(dev);
3936         pm_runtime_enable(dev);
3937
3938         ret = ov5640_check_chip_id(sensor);
3939         if (ret)
3940                 goto err_pm_runtime;
3941
3942         ret = v4l2_async_register_subdev_sensor(&sensor->sd);
3943         if (ret)
3944                 goto err_pm_runtime;
3945
3946         pm_runtime_set_autosuspend_delay(dev, 1000);
3947         pm_runtime_use_autosuspend(dev);
3948         pm_runtime_mark_last_busy(dev);
3949         pm_runtime_put_autosuspend(dev);
3950
3951         return 0;
3952
3953 err_pm_runtime:
3954         pm_runtime_put_noidle(dev);
3955         pm_runtime_disable(dev);
3956         ov5640_sensor_suspend(dev);
3957 free_ctrls:
3958         v4l2_ctrl_handler_free(&sensor->ctrls.handler);
3959 entity_cleanup:
3960         media_entity_cleanup(&sensor->sd.entity);
3961         mutex_destroy(&sensor->lock);
3962         return ret;
3963 }
3964
3965 static void ov5640_remove(struct i2c_client *client)
3966 {
3967         struct v4l2_subdev *sd = i2c_get_clientdata(client);
3968         struct ov5640_dev *sensor = to_ov5640_dev(sd);
3969         struct device *dev = &client->dev;
3970
3971         pm_runtime_disable(dev);
3972         if (!pm_runtime_status_suspended(dev))
3973                 ov5640_sensor_suspend(dev);
3974         pm_runtime_set_suspended(dev);
3975
3976         v4l2_async_unregister_subdev(&sensor->sd);
3977         media_entity_cleanup(&sensor->sd.entity);
3978         v4l2_ctrl_handler_free(&sensor->ctrls.handler);
3979         mutex_destroy(&sensor->lock);
3980 }
3981
3982 static const struct dev_pm_ops ov5640_pm_ops = {
3983         SET_RUNTIME_PM_OPS(ov5640_sensor_suspend, ov5640_sensor_resume, NULL)
3984 };
3985
3986 static const struct i2c_device_id ov5640_id[] = {
3987         {"ov5640", 0},
3988         {},
3989 };
3990 MODULE_DEVICE_TABLE(i2c, ov5640_id);
3991
3992 static const struct of_device_id ov5640_dt_ids[] = {
3993         { .compatible = "ovti,ov5640" },
3994         { /* sentinel */ }
3995 };
3996 MODULE_DEVICE_TABLE(of, ov5640_dt_ids);
3997
3998 static struct i2c_driver ov5640_i2c_driver = {
3999         .driver = {
4000                 .name  = "ov5640",
4001                 .of_match_table = ov5640_dt_ids,
4002                 .pm = &ov5640_pm_ops,
4003         },
4004         .id_table = ov5640_id,
4005         .probe    = ov5640_probe,
4006         .remove   = ov5640_remove,
4007 };
4008
4009 module_i2c_driver(ov5640_i2c_driver);
4010
4011 MODULE_DESCRIPTION("OV5640 MIPI Camera Subdev Driver");
4012 MODULE_LICENSE("GPL");