drivers/media/i2c/ov5645.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Driver for the OV5645 camera sensor.
   4  *
   5  * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
   6  * Copyright (C) 2015 By Tech Design S.L. All Rights Reserved.
   7  * Copyright (C) 2012-2013 Freescale Semiconductor, Inc. All Rights Reserved.
   8  *
   9  * Based on:
  10  * - the OV5645 driver from QC msm-3.10 kernel on codeaurora.org:
  11  *   https://us.codeaurora.org/cgit/quic/la/kernel/msm-3.10/tree/drivers/
  12  *       media/platform/msm/camera_v2/sensor/ov5645.c?h=LA.BR.1.2.4_rb1.41
  13  * - the OV5640 driver posted on linux-media:
  14  *   https://www.mail-archive.com/linux-media%40vger.kernel.org/msg92671.html
  15  */
  16
  17 #include <linux/bitops.h>
  18 #include <linux/clk.h>
  19 #include <linux/delay.h>
  20 #include <linux/device.h>
  21 #include <linux/gpio/consumer.h>
  22 #include <linux/i2c.h>
  23 #include <linux/init.h>
  24 #include <linux/module.h>
  25 #include <linux/of.h>
  26 #include <linux/of_graph.h>
  27 #include <linux/pm_runtime.h>
  28 #include <linux/regulator/consumer.h>
  29 #include <linux/slab.h>
  30 #include <linux/types.h>
  31 #include <media/v4l2-ctrls.h>
  32 #include <media/v4l2-fwnode.h>
  33 #include <media/v4l2-subdev.h>
  34
  35 #define OV5645_SYSTEM_CTRL0             0x3008
  36 #define         OV5645_SYSTEM_CTRL0_START       0x02
  37 #define         OV5645_SYSTEM_CTRL0_STOP        0x42
  38 #define OV5645_CHIP_ID_HIGH             0x300a
  39 #define         OV5645_CHIP_ID_HIGH_BYTE        0x56
  40 #define OV5645_CHIP_ID_LOW              0x300b
  41 #define         OV5645_CHIP_ID_LOW_BYTE         0x45
  42 #define OV5645_IO_MIPI_CTRL00           0x300e
  43 #define OV5645_PAD_OUTPUT00             0x3019
  44 #define OV5645_AWB_MANUAL_CONTROL       0x3406
  45 #define         OV5645_AWB_MANUAL_ENABLE        BIT(0)
  46 #define OV5645_AEC_PK_MANUAL            0x3503
  47 #define         OV5645_AEC_MANUAL_ENABLE        BIT(0)
  48 #define         OV5645_AGC_MANUAL_ENABLE        BIT(1)
  49 #define OV5645_TIMING_TC_REG20          0x3820
  50 #define         OV5645_SENSOR_VFLIP             BIT(1)
  51 #define         OV5645_ISP_VFLIP                BIT(2)
  52 #define OV5645_TIMING_TC_REG21          0x3821
  53 #define         OV5645_SENSOR_MIRROR            BIT(1)
  54 #define OV5645_MIPI_CTRL00              0x4800
  55 #define OV5645_PRE_ISP_TEST_SETTING_1   0x503d
  56 #define         OV5645_TEST_PATTERN_MASK        0x3
  57 #define         OV5645_SET_TEST_PATTERN(x)      ((x) & OV5645_TEST_PATTERN_MASK)
  58 #define         OV5645_TEST_PATTERN_ENABLE      BIT(7)
  59 #define OV5645_SDE_SAT_U                0x5583
  60 #define OV5645_SDE_SAT_V                0x5584
  61
  62 /* regulator supplies */
  63 static const char * const ov5645_supply_name[] = {
  64         "vdddo", /* Digital I/O (1.8V) supply */
  65         "vdda",  /* Analog (2.8V) supply */
  66         "vddd",  /* Digital Core (1.5V) supply */
  67 };
  68
  69 #define OV5645_NUM_SUPPLIES ARRAY_SIZE(ov5645_supply_name)
  70
  71 struct reg_value {
  72         u16 reg;
  73         u8 val;
  74 };
  75
  76 struct ov5645_mode_info {
  77         u32 width;
  78         u32 height;
  79         const struct reg_value *data;
  80         u32 data_size;
  81         u32 pixel_clock;
  82         u32 link_freq;
  83 };
  84
  85 struct ov5645 {
  86         struct i2c_client *i2c_client;
  87         struct device *dev;
  88         struct v4l2_subdev sd;
  89         struct media_pad pad;
  90         struct v4l2_fwnode_endpoint ep;
  91         struct v4l2_mbus_framefmt fmt;
  92         struct v4l2_rect crop;
  93         struct clk *xclk;
  94
  95         struct regulator_bulk_data supplies[OV5645_NUM_SUPPLIES];
  96
  97         const struct ov5645_mode_info *current_mode;
  98
  99         struct v4l2_ctrl_handler ctrls;
 100         struct v4l2_ctrl *pixel_clock;
 101         struct v4l2_ctrl *link_freq;
 102
 103         /* Cached register values */
 104         u8 aec_pk_manual;
 105         u8 timing_tc_reg20;
 106         u8 timing_tc_reg21;
 107
 108         struct mutex power_lock; /* lock to protect power state */
 109
 110         struct gpio_desc *enable_gpio;
 111         struct gpio_desc *rst_gpio;
 112 };
 113
 114 static inline struct ov5645 *to_ov5645(struct v4l2_subdev *sd)
 115 {
 116         return container_of(sd, struct ov5645, sd);
 117 }
 118
 119 static const struct reg_value ov5645_global_init_setting[] = {
 120         { 0x3103, 0x11 },
 121         { 0x3008, 0x82 },
 122         { 0x3008, 0x42 },
 123         { 0x3103, 0x03 },
 124         { 0x3503, 0x07 },
 125         { 0x3002, 0x1c },
 126         { 0x3006, 0xc3 },
 127         { 0x3017, 0x00 },
 128         { 0x3018, 0x00 },
 129         { 0x302e, 0x0b },
 130         { 0x3037, 0x13 },
 131         { 0x3108, 0x01 },
 132         { 0x3611, 0x06 },
 133         { 0x3500, 0x00 },
 134         { 0x3501, 0x01 },
 135         { 0x3502, 0x00 },
 136         { 0x350a, 0x00 },
 137         { 0x350b, 0x3f },
 138         { 0x3620, 0x33 },
 139         { 0x3621, 0xe0 },
 140         { 0x3622, 0x01 },
 141         { 0x3630, 0x2e },
 142         { 0x3631, 0x00 },
 143         { 0x3632, 0x32 },
 144         { 0x3633, 0x52 },
 145         { 0x3634, 0x70 },
 146         { 0x3635, 0x13 },
 147         { 0x3636, 0x03 },
 148         { 0x3703, 0x5a },
 149         { 0x3704, 0xa0 },
 150         { 0x3705, 0x1a },
 151         { 0x3709, 0x12 },
 152         { 0x370b, 0x61 },
 153         { 0x370f, 0x10 },
 154         { 0x3715, 0x78 },
 155         { 0x3717, 0x01 },
 156         { 0x371b, 0x20 },
 157         { 0x3731, 0x12 },
 158         { 0x3901, 0x0a },
 159         { 0x3905, 0x02 },
 160         { 0x3906, 0x10 },
 161         { 0x3719, 0x86 },
 162         { 0x3810, 0x00 },
 163         { 0x3811, 0x10 },
 164         { 0x3812, 0x00 },
 165         { 0x3821, 0x01 },
 166         { 0x3824, 0x01 },
 167         { 0x3826, 0x03 },
 168         { 0x3828, 0x08 },
 169         { 0x3a19, 0xf8 },
 170         { 0x3c01, 0x34 },
 171         { 0x3c04, 0x28 },
 172         { 0x3c05, 0x98 },
 173         { 0x3c07, 0x07 },
 174         { 0x3c09, 0xc2 },
 175         { 0x3c0a, 0x9c },
 176         { 0x3c0b, 0x40 },
 177         { 0x3c01, 0x34 },
 178         { 0x4001, 0x02 },
 179         { 0x4514, 0x00 },
 180         { 0x4520, 0xb0 },
 181         { 0x460b, 0x37 },
 182         { 0x460c, 0x20 },
 183         { 0x4818, 0x01 },
 184         { 0x481d, 0xf0 },
 185         { 0x481f, 0x50 },
 186         { 0x4823, 0x70 },
 187         { 0x4831, 0x14 },
 188         { 0x5000, 0xa7 },
 189         { 0x5001, 0x83 },
 190         { 0x501d, 0x00 },
 191         { 0x501f, 0x00 },
 192         { 0x503d, 0x00 },
 193         { 0x505c, 0x30 },
 194         { 0x5181, 0x59 },
 195         { 0x5183, 0x00 },
 196         { 0x5191, 0xf0 },
 197         { 0x5192, 0x03 },
 198         { 0x5684, 0x10 },
 199         { 0x5685, 0xa0 },
 200         { 0x5686, 0x0c },
 201         { 0x5687, 0x78 },
 202         { 0x5a00, 0x08 },
 203         { 0x5a21, 0x00 },
 204         { 0x5a24, 0x00 },
 205         { 0x3008, 0x02 },
 206         { 0x3503, 0x00 },
 207         { 0x5180, 0xff },
 208         { 0x5181, 0xf2 },
 209         { 0x5182, 0x00 },
 210         { 0x5183, 0x14 },
 211         { 0x5184, 0x25 },
 212         { 0x5185, 0x24 },
 213         { 0x5186, 0x09 },
 214         { 0x5187, 0x09 },
 215         { 0x5188, 0x0a },
 216         { 0x5189, 0x75 },
 217         { 0x518a, 0x52 },
 218         { 0x518b, 0xea },
 219         { 0x518c, 0xa8 },
 220         { 0x518d, 0x42 },
 221         { 0x518e, 0x38 },
 222         { 0x518f, 0x56 },
 223         { 0x5190, 0x42 },
 224         { 0x5191, 0xf8 },
 225         { 0x5192, 0x04 },
 226         { 0x5193, 0x70 },
 227         { 0x5194, 0xf0 },
 228         { 0x5195, 0xf0 },
 229         { 0x5196, 0x03 },
 230         { 0x5197, 0x01 },
 231         { 0x5198, 0x04 },
 232         { 0x5199, 0x12 },
 233         { 0x519a, 0x04 },
 234         { 0x519b, 0x00 },
 235         { 0x519c, 0x06 },
 236         { 0x519d, 0x82 },
 237         { 0x519e, 0x38 },
 238         { 0x5381, 0x1e },
 239         { 0x5382, 0x5b },
 240         { 0x5383, 0x08 },
 241         { 0x5384, 0x0a },
 242         { 0x5385, 0x7e },
 243         { 0x5386, 0x88 },
 244         { 0x5387, 0x7c },
 245         { 0x5388, 0x6c },
 246         { 0x5389, 0x10 },
 247         { 0x538a, 0x01 },
 248         { 0x538b, 0x98 },
 249         { 0x5300, 0x08 },
 250         { 0x5301, 0x30 },
 251         { 0x5302, 0x10 },
 252         { 0x5303, 0x00 },
 253         { 0x5304, 0x08 },
 254         { 0x5305, 0x30 },
 255         { 0x5306, 0x08 },
 256         { 0x5307, 0x16 },
 257         { 0x5309, 0x08 },
 258         { 0x530a, 0x30 },
 259         { 0x530b, 0x04 },
 260         { 0x530c, 0x06 },
 261         { 0x5480, 0x01 },
 262         { 0x5481, 0x08 },
 263         { 0x5482, 0x14 },
 264         { 0x5483, 0x28 },
 265         { 0x5484, 0x51 },
 266         { 0x5485, 0x65 },
 267         { 0x5486, 0x71 },
 268         { 0x5487, 0x7d },
 269         { 0x5488, 0x87 },
 270         { 0x5489, 0x91 },
 271         { 0x548a, 0x9a },
 272         { 0x548b, 0xaa },
 273         { 0x548c, 0xb8 },
 274         { 0x548d, 0xcd },
 275         { 0x548e, 0xdd },
 276         { 0x548f, 0xea },
 277         { 0x5490, 0x1d },
 278         { 0x5580, 0x02 },
 279         { 0x5583, 0x40 },
 280         { 0x5584, 0x10 },
 281         { 0x5589, 0x10 },
 282         { 0x558a, 0x00 },
 283         { 0x558b, 0xf8 },
 284         { 0x5800, 0x3f },
 285         { 0x5801, 0x16 },
 286         { 0x5802, 0x0e },
 287         { 0x5803, 0x0d },
 288         { 0x5804, 0x17 },
 289         { 0x5805, 0x3f },
 290         { 0x5806, 0x0b },
 291         { 0x5807, 0x06 },
 292         { 0x5808, 0x04 },
 293         { 0x5809, 0x04 },
 294         { 0x580a, 0x06 },
 295         { 0x580b, 0x0b },
 296         { 0x580c, 0x09 },
 297         { 0x580d, 0x03 },
 298         { 0x580e, 0x00 },
 299         { 0x580f, 0x00 },
 300         { 0x5810, 0x03 },
 301         { 0x5811, 0x08 },
 302         { 0x5812, 0x0a },
 303         { 0x5813, 0x03 },
 304         { 0x5814, 0x00 },
 305         { 0x5815, 0x00 },
 306         { 0x5816, 0x04 },
 307         { 0x5817, 0x09 },
 308         { 0x5818, 0x0f },
 309         { 0x5819, 0x08 },
 310         { 0x581a, 0x06 },
 311         { 0x581b, 0x06 },
 312         { 0x581c, 0x08 },
 313         { 0x581d, 0x0c },
 314         { 0x581e, 0x3f },
 315         { 0x581f, 0x1e },
 316         { 0x5820, 0x12 },
 317         { 0x5821, 0x13 },
 318         { 0x5822, 0x21 },
 319         { 0x5823, 0x3f },
 320         { 0x5824, 0x68 },
 321         { 0x5825, 0x28 },
 322         { 0x5826, 0x2c },
 323         { 0x5827, 0x28 },
 324         { 0x5828, 0x08 },
 325         { 0x5829, 0x48 },
 326         { 0x582a, 0x64 },
 327         { 0x582b, 0x62 },
 328         { 0x582c, 0x64 },
 329         { 0x582d, 0x28 },
 330         { 0x582e, 0x46 },
 331         { 0x582f, 0x62 },
 332         { 0x5830, 0x60 },
 333         { 0x5831, 0x62 },
 334         { 0x5832, 0x26 },
 335         { 0x5833, 0x48 },
 336         { 0x5834, 0x66 },
 337         { 0x5835, 0x44 },
 338         { 0x5836, 0x64 },
 339         { 0x5837, 0x28 },
 340         { 0x5838, 0x66 },
 341         { 0x5839, 0x48 },
 342         { 0x583a, 0x2c },
 343         { 0x583b, 0x28 },
 344         { 0x583c, 0x26 },
 345         { 0x583d, 0xae },
 346         { 0x5025, 0x00 },
 347         { 0x3a0f, 0x30 },
 348         { 0x3a10, 0x28 },
 349         { 0x3a1b, 0x30 },
 350         { 0x3a1e, 0x26 },
 351         { 0x3a11, 0x60 },
 352         { 0x3a1f, 0x14 },
 353         { 0x0601, 0x02 },
 354         { 0x3008, 0x42 },
 355         { 0x3008, 0x02 },
 356         { OV5645_IO_MIPI_CTRL00, 0x40 },
 357         { OV5645_MIPI_CTRL00, 0x24 },
 358         { OV5645_PAD_OUTPUT00, 0x70 }
 359 };
 360
 361 static const struct reg_value ov5645_setting_sxga[] = {
 362         { 0x3612, 0xa9 },
 363         { 0x3614, 0x50 },
 364         { 0x3618, 0x00 },
 365         { 0x3034, 0x18 },
 366         { 0x3035, 0x21 },
 367         { 0x3036, 0x70 },
 368         { 0x3600, 0x09 },
 369         { 0x3601, 0x43 },
 370         { 0x3708, 0x66 },
 371         { 0x370c, 0xc3 },
 372         { 0x3800, 0x00 },
 373         { 0x3801, 0x00 },
 374         { 0x3802, 0x00 },
 375         { 0x3803, 0x06 },
 376         { 0x3804, 0x0a },
 377         { 0x3805, 0x3f },
 378         { 0x3806, 0x07 },
 379         { 0x3807, 0x9d },
 380         { 0x3808, 0x05 },
 381         { 0x3809, 0x00 },
 382         { 0x380a, 0x03 },
 383         { 0x380b, 0xc0 },
 384         { 0x380c, 0x07 },
 385         { 0x380d, 0x68 },
 386         { 0x380e, 0x03 },
 387         { 0x380f, 0xd8 },
 388         { 0x3813, 0x06 },
 389         { 0x3814, 0x31 },
 390         { 0x3815, 0x31 },
 391         { 0x3820, 0x47 },
 392         { 0x3a02, 0x03 },
 393         { 0x3a03, 0xd8 },
 394         { 0x3a08, 0x01 },
 395         { 0x3a09, 0xf8 },
 396         { 0x3a0a, 0x01 },
 397         { 0x3a0b, 0xa4 },
 398         { 0x3a0e, 0x02 },
 399         { 0x3a0d, 0x02 },
 400         { 0x3a14, 0x03 },
 401         { 0x3a15, 0xd8 },
 402         { 0x3a18, 0x00 },
 403         { 0x4004, 0x02 },
 404         { 0x4005, 0x18 },
 405         { 0x4300, 0x32 },
 406         { 0x4202, 0x00 }
 407 };
 408
 409 static const struct reg_value ov5645_setting_1080p[] = {
 410         { 0x3612, 0xab },
 411         { 0x3614, 0x50 },
 412         { 0x3618, 0x04 },
 413         { 0x3034, 0x18 },
 414         { 0x3035, 0x11 },
 415         { 0x3036, 0x54 },
 416         { 0x3600, 0x08 },
 417         { 0x3601, 0x33 },
 418         { 0x3708, 0x63 },
 419         { 0x370c, 0xc0 },
 420         { 0x3800, 0x01 },
 421         { 0x3801, 0x50 },
 422         { 0x3802, 0x01 },
 423         { 0x3803, 0xb2 },
 424         { 0x3804, 0x08 },
 425         { 0x3805, 0xef },
 426         { 0x3806, 0x05 },
 427         { 0x3807, 0xf1 },
 428         { 0x3808, 0x07 },
 429         { 0x3809, 0x80 },
 430         { 0x380a, 0x04 },
 431         { 0x380b, 0x38 },
 432         { 0x380c, 0x09 },
 433         { 0x380d, 0xc4 },
 434         { 0x380e, 0x04 },
 435         { 0x380f, 0x60 },
 436         { 0x3813, 0x04 },
 437         { 0x3814, 0x11 },
 438         { 0x3815, 0x11 },
 439         { 0x3820, 0x47 },
 440         { 0x4514, 0x88 },
 441         { 0x3a02, 0x04 },
 442         { 0x3a03, 0x60 },
 443         { 0x3a08, 0x01 },
 444         { 0x3a09, 0x50 },
 445         { 0x3a0a, 0x01 },
 446         { 0x3a0b, 0x18 },
 447         { 0x3a0e, 0x03 },
 448         { 0x3a0d, 0x04 },
 449         { 0x3a14, 0x04 },
 450         { 0x3a15, 0x60 },
 451         { 0x3a18, 0x00 },
 452         { 0x4004, 0x06 },
 453         { 0x4005, 0x18 },
 454         { 0x4300, 0x32 },
 455         { 0x4202, 0x00 },
 456         { 0x4837, 0x0b }
 457 };
 458
 459 static const struct reg_value ov5645_setting_full[] = {
 460         { 0x3612, 0xab },
 461         { 0x3614, 0x50 },
 462         { 0x3618, 0x04 },
 463         { 0x3034, 0x18 },
 464         { 0x3035, 0x11 },
 465         { 0x3036, 0x54 },
 466         { 0x3600, 0x08 },
 467         { 0x3601, 0x33 },
 468         { 0x3708, 0x63 },
 469         { 0x370c, 0xc0 },
 470         { 0x3800, 0x00 },
 471         { 0x3801, 0x00 },
 472         { 0x3802, 0x00 },
 473         { 0x3803, 0x00 },
 474         { 0x3804, 0x0a },
 475         { 0x3805, 0x3f },
 476         { 0x3806, 0x07 },
 477         { 0x3807, 0x9f },
 478         { 0x3808, 0x0a },
 479         { 0x3809, 0x20 },
 480         { 0x380a, 0x07 },
 481         { 0x380b, 0x98 },
 482         { 0x380c, 0x0b },
 483         { 0x380d, 0x1c },
 484         { 0x380e, 0x07 },
 485         { 0x380f, 0xb0 },
 486         { 0x3813, 0x06 },
 487         { 0x3814, 0x11 },
 488         { 0x3815, 0x11 },
 489         { 0x3820, 0x47 },
 490         { 0x4514, 0x88 },
 491         { 0x3a02, 0x07 },
 492         { 0x3a03, 0xb0 },
 493         { 0x3a08, 0x01 },
 494         { 0x3a09, 0x27 },
 495         { 0x3a0a, 0x00 },
 496         { 0x3a0b, 0xf6 },
 497         { 0x3a0e, 0x06 },
 498         { 0x3a0d, 0x08 },
 499         { 0x3a14, 0x07 },
 500         { 0x3a15, 0xb0 },
 501         { 0x3a18, 0x01 },
 502         { 0x4004, 0x06 },
 503         { 0x4005, 0x18 },
 504         { 0x4300, 0x32 },
 505         { 0x4837, 0x0b },
 506         { 0x4202, 0x00 }
 507 };
 508
 509 static const s64 link_freq[] = {
 510         224000000,
 511         336000000
 512 };
 513
 514 static const struct ov5645_mode_info ov5645_mode_info_data[] = {
 515         {
 516                 .width = 1280,
 517                 .height = 960,
 518                 .data = ov5645_setting_sxga,
 519                 .data_size = ARRAY_SIZE(ov5645_setting_sxga),
 520                 .pixel_clock = 112000000,
 521                 .link_freq = 0 /* an index in link_freq[] */
 522         },
 523         {
 524                 .width = 1920,
 525                 .height = 1080,
 526                 .data = ov5645_setting_1080p,
 527                 .data_size = ARRAY_SIZE(ov5645_setting_1080p),
 528                 .pixel_clock = 168000000,
 529                 .link_freq = 1 /* an index in link_freq[] */
 530         },
 531         {
 532                 .width = 2592,
 533                 .height = 1944,
 534                 .data = ov5645_setting_full,
 535                 .data_size = ARRAY_SIZE(ov5645_setting_full),
 536                 .pixel_clock = 168000000,
 537                 .link_freq = 1 /* an index in link_freq[] */
 538         },
 539 };
 540
 541 static int ov5645_write_reg(struct ov5645 *ov5645, u16 reg, u8 val)
 542 {
 543         u8 regbuf[3];
 544         int ret;
 545
 546         regbuf[0] = reg >> 8;
 547         regbuf[1] = reg & 0xff;
 548         regbuf[2] = val;
 549
 550         ret = i2c_master_send(ov5645->i2c_client, regbuf, 3);
 551         if (ret < 0) {
 552                 dev_err(ov5645->dev, "%s: write reg error %d: reg=%x, val=%x\n",
 553                         __func__, ret, reg, val);
 554                 return ret;
 555         }
 556
 557         return 0;
 558 }
 559
 560 static int ov5645_read_reg(struct ov5645 *ov5645, u16 reg, u8 *val)
 561 {
 562         u8 regbuf[2];
 563         int ret;
 564
 565         regbuf[0] = reg >> 8;
 566         regbuf[1] = reg & 0xff;
 567
 568         ret = i2c_master_send(ov5645->i2c_client, regbuf, 2);
 569         if (ret < 0) {
 570                 dev_err(ov5645->dev, "%s: write reg error %d: reg=%x\n",
 571                         __func__, ret, reg);
 572                 return ret;
 573         }
 574
 575         ret = i2c_master_recv(ov5645->i2c_client, val, 1);
 576         if (ret < 0) {
 577                 dev_err(ov5645->dev, "%s: read reg error %d: reg=%x\n",
 578                         __func__, ret, reg);
 579                 return ret;
 580         }
 581
 582         return 0;
 583 }
 584
 585 static int ov5645_set_aec_mode(struct ov5645 *ov5645, u32 mode)
 586 {
 587         u8 val = ov5645->aec_pk_manual;
 588         int ret;
 589
 590         if (mode == V4L2_EXPOSURE_AUTO)
 591                 val &= ~OV5645_AEC_MANUAL_ENABLE;
 592         else /* V4L2_EXPOSURE_MANUAL */
 593                 val |= OV5645_AEC_MANUAL_ENABLE;
 594
 595         ret = ov5645_write_reg(ov5645, OV5645_AEC_PK_MANUAL, val);
 596         if (!ret)
 597                 ov5645->aec_pk_manual = val;
 598
 599         return ret;
 600 }
 601
 602 static int ov5645_set_agc_mode(struct ov5645 *ov5645, u32 enable)
 603 {
 604         u8 val = ov5645->aec_pk_manual;
 605         int ret;
 606
 607         if (enable)
 608                 val &= ~OV5645_AGC_MANUAL_ENABLE;
 609         else
 610                 val |= OV5645_AGC_MANUAL_ENABLE;
 611
 612         ret = ov5645_write_reg(ov5645, OV5645_AEC_PK_MANUAL, val);
 613         if (!ret)
 614                 ov5645->aec_pk_manual = val;
 615
 616         return ret;
 617 }
 618
 619 static int ov5645_set_register_array(struct ov5645 *ov5645,
 620                                      const struct reg_value *settings,
 621                                      unsigned int num_settings)
 622 {
 623         unsigned int i;
 624         int ret;
 625
 626         for (i = 0; i < num_settings; ++i, ++settings) {
 627                 ret = ov5645_write_reg(ov5645, settings->reg, settings->val);
 628                 if (ret < 0)
 629                         return ret;
 630         }
 631
 632         return 0;
 633 }
 634
 635 static int ov5645_set_power_off(struct device *dev)
 636 {
 637         struct v4l2_subdev *sd = dev_get_drvdata(dev);
 638         struct ov5645 *ov5645 = to_ov5645(sd);
 639
 640         ov5645_write_reg(ov5645, OV5645_IO_MIPI_CTRL00, 0x58);
 641         gpiod_set_value_cansleep(ov5645->rst_gpio, 1);
 642         gpiod_set_value_cansleep(ov5645->enable_gpio, 0);
 643         clk_disable_unprepare(ov5645->xclk);
 644         regulator_bulk_disable(OV5645_NUM_SUPPLIES, ov5645->supplies);
 645
 646         return 0;
 647 }
 648
 649 static int ov5645_set_power_on(struct device *dev)
 650 {
 651         struct v4l2_subdev *sd = dev_get_drvdata(dev);
 652         struct ov5645 *ov5645 = to_ov5645(sd);
 653         int ret;
 654
 655         ret = regulator_bulk_enable(OV5645_NUM_SUPPLIES, ov5645->supplies);
 656         if (ret < 0)
 657                 return ret;
 658
 659         ret = clk_prepare_enable(ov5645->xclk);
 660         if (ret < 0) {
 661                 dev_err(ov5645->dev, "clk prepare enable failed\n");
 662                 regulator_bulk_disable(OV5645_NUM_SUPPLIES, ov5645->supplies);
 663                 return ret;
 664         }
 665
 666         usleep_range(5000, 15000);
 667         gpiod_set_value_cansleep(ov5645->enable_gpio, 1);
 668
 669         usleep_range(1000, 2000);
 670         gpiod_set_value_cansleep(ov5645->rst_gpio, 0);
 671
 672         msleep(20);
 673
 674         ret = ov5645_set_register_array(ov5645, ov5645_global_init_setting,
 675                                         ARRAY_SIZE(ov5645_global_init_setting));
 676         if (ret < 0) {
 677                 dev_err(ov5645->dev, "could not set init registers\n");
 678                 goto exit;
 679         }
 680
 681         usleep_range(500, 1000);
 682
 683         return 0;
 684
 685 exit:
 686         ov5645_set_power_off(dev);
 687         return ret;
 688 }
 689
 690 static int ov5645_set_saturation(struct ov5645 *ov5645, s32 value)
 691 {
 692         u32 reg_value = (value * 0x10) + 0x40;
 693         int ret;
 694
 695         ret = ov5645_write_reg(ov5645, OV5645_SDE_SAT_U, reg_value);
 696         if (ret < 0)
 697                 return ret;
 698
 699         return ov5645_write_reg(ov5645, OV5645_SDE_SAT_V, reg_value);
 700 }
 701
 702 static int ov5645_set_hflip(struct ov5645 *ov5645, s32 value)
 703 {
 704         u8 val = ov5645->timing_tc_reg21;
 705         int ret;
 706
 707         if (value == 0)
 708                 val &= ~(OV5645_SENSOR_MIRROR);
 709         else
 710                 val |= (OV5645_SENSOR_MIRROR);
 711
 712         ret = ov5645_write_reg(ov5645, OV5645_TIMING_TC_REG21, val);
 713         if (!ret)
 714                 ov5645->timing_tc_reg21 = val;
 715
 716         return ret;
 717 }
 718
 719 static int ov5645_set_vflip(struct ov5645 *ov5645, s32 value)
 720 {
 721         u8 val = ov5645->timing_tc_reg20;
 722         int ret;
 723
 724         if (value == 0)
 725                 val |= (OV5645_SENSOR_VFLIP | OV5645_ISP_VFLIP);
 726         else
 727                 val &= ~(OV5645_SENSOR_VFLIP | OV5645_ISP_VFLIP);
 728
 729         ret = ov5645_write_reg(ov5645, OV5645_TIMING_TC_REG20, val);
 730         if (!ret)
 731                 ov5645->timing_tc_reg20 = val;
 732
 733         return ret;
 734 }
 735
 736 static int ov5645_set_test_pattern(struct ov5645 *ov5645, s32 value)
 737 {
 738         u8 val = 0;
 739
 740         if (value) {
 741                 val = OV5645_SET_TEST_PATTERN(value - 1);
 742                 val |= OV5645_TEST_PATTERN_ENABLE;
 743         }
 744
 745         return ov5645_write_reg(ov5645, OV5645_PRE_ISP_TEST_SETTING_1, val);
 746 }
 747
 748 static const char * const ov5645_test_pattern_menu[] = {
 749         "Disabled",
 750         "Vertical Color Bars",
 751         "Pseudo-Random Data",
 752         "Color Square",
 753         "Black Image",
 754 };
 755
 756 static int ov5645_set_awb(struct ov5645 *ov5645, s32 enable_auto)
 757 {
 758         u8 val = 0;
 759
 760         if (!enable_auto)
 761                 val = OV5645_AWB_MANUAL_ENABLE;
 762
 763         return ov5645_write_reg(ov5645, OV5645_AWB_MANUAL_CONTROL, val);
 764 }
 765
 766 static int ov5645_s_ctrl(struct v4l2_ctrl *ctrl)
 767 {
 768         struct ov5645 *ov5645 = container_of(ctrl->handler,
 769                                              struct ov5645, ctrls);
 770         int ret;
 771
 772         mutex_lock(&ov5645->power_lock);
 773         if (!pm_runtime_get_if_in_use(ov5645->dev)) {
 774                 mutex_unlock(&ov5645->power_lock);
 775                 return 0;
 776         }
 777
 778         switch (ctrl->id) {
 779         case V4L2_CID_SATURATION:
 780                 ret = ov5645_set_saturation(ov5645, ctrl->val);
 781                 break;
 782         case V4L2_CID_AUTO_WHITE_BALANCE:
 783                 ret = ov5645_set_awb(ov5645, ctrl->val);
 784                 break;
 785         case V4L2_CID_AUTOGAIN:
 786                 ret = ov5645_set_agc_mode(ov5645, ctrl->val);
 787                 break;
 788         case V4L2_CID_EXPOSURE_AUTO:
 789                 ret = ov5645_set_aec_mode(ov5645, ctrl->val);
 790                 break;
 791         case V4L2_CID_TEST_PATTERN:
 792                 ret = ov5645_set_test_pattern(ov5645, ctrl->val);
 793                 break;
 794         case V4L2_CID_HFLIP:
 795                 ret = ov5645_set_hflip(ov5645, ctrl->val);
 796                 break;
 797         case V4L2_CID_VFLIP:
 798                 ret = ov5645_set_vflip(ov5645, ctrl->val);
 799                 break;
 800         default:
 801                 ret = -EINVAL;
 802                 break;
 803         }
 804
 805         pm_runtime_mark_last_busy(ov5645->dev);
 806         pm_runtime_put_autosuspend(ov5645->dev);
 807         mutex_unlock(&ov5645->power_lock);
 808
 809         return ret;
 810 }
 811
 812 static const struct v4l2_ctrl_ops ov5645_ctrl_ops = {
 813         .s_ctrl = ov5645_s_ctrl,
 814 };
 815
 816 static int ov5645_enum_mbus_code(struct v4l2_subdev *sd,
 817                                  struct v4l2_subdev_state *sd_state,
 818                                  struct v4l2_subdev_mbus_code_enum *code)
 819 {
 820         if (code->index > 0)
 821                 return -EINVAL;
 822
 823         code->code = MEDIA_BUS_FMT_UYVY8_1X16;
 824
 825         return 0;
 826 }
 827
 828 static int ov5645_enum_frame_size(struct v4l2_subdev *subdev,
 829                                   struct v4l2_subdev_state *sd_state,
 830                                   struct v4l2_subdev_frame_size_enum *fse)
 831 {
 832         if (fse->code != MEDIA_BUS_FMT_UYVY8_1X16)
 833                 return -EINVAL;
 834
 835         if (fse->index >= ARRAY_SIZE(ov5645_mode_info_data))
 836                 return -EINVAL;
 837
 838         fse->min_width = ov5645_mode_info_data[fse->index].width;
 839         fse->max_width = ov5645_mode_info_data[fse->index].width;
 840         fse->min_height = ov5645_mode_info_data[fse->index].height;
 841         fse->max_height = ov5645_mode_info_data[fse->index].height;
 842
 843         return 0;
 844 }
 845
 846 static struct v4l2_mbus_framefmt *
 847 __ov5645_get_pad_format(struct ov5645 *ov5645,
 848                         struct v4l2_subdev_state *sd_state,
 849                         unsigned int pad,
 850                         enum v4l2_subdev_format_whence which)
 851 {
 852         switch (which) {
 853         case V4L2_SUBDEV_FORMAT_TRY:
 854                 return v4l2_subdev_get_try_format(&ov5645->sd, sd_state, pad);
 855         case V4L2_SUBDEV_FORMAT_ACTIVE:
 856                 return &ov5645->fmt;
 857         default:
 858                 return NULL;
 859         }
 860 }
 861
 862 static int ov5645_get_format(struct v4l2_subdev *sd,
 863                              struct v4l2_subdev_state *sd_state,
 864                              struct v4l2_subdev_format *format)
 865 {
 866         struct ov5645 *ov5645 = to_ov5645(sd);
 867
 868         format->format = *__ov5645_get_pad_format(ov5645, sd_state,
 869                                                   format->pad,
 870                                                   format->which);
 871         return 0;
 872 }
 873
 874 static struct v4l2_rect *
 875 __ov5645_get_pad_crop(struct ov5645 *ov5645,
 876                       struct v4l2_subdev_state *sd_state,
 877                       unsigned int pad, enum v4l2_subdev_format_whence which)
 878 {
 879         switch (which) {
 880         case V4L2_SUBDEV_FORMAT_TRY:
 881                 return v4l2_subdev_get_try_crop(&ov5645->sd, sd_state, pad);
 882         case V4L2_SUBDEV_FORMAT_ACTIVE:
 883                 return &ov5645->crop;
 884         default:
 885                 return NULL;
 886         }
 887 }
 888
 889 static int ov5645_set_format(struct v4l2_subdev *sd,
 890                              struct v4l2_subdev_state *sd_state,
 891                              struct v4l2_subdev_format *format)
 892 {
 893         struct ov5645 *ov5645 = to_ov5645(sd);
 894         struct v4l2_mbus_framefmt *__format;
 895         struct v4l2_rect *__crop;
 896         const struct ov5645_mode_info *new_mode;
 897         int ret;
 898
 899         __crop = __ov5645_get_pad_crop(ov5645, sd_state, format->pad,
 900                                        format->which);
 901
 902         new_mode = v4l2_find_nearest_size(ov5645_mode_info_data,
 903                                ARRAY_SIZE(ov5645_mode_info_data),
 904                                width, height,
 905                                format->format.width, format->format.height);
 906
 907         __crop->width = new_mode->width;
 908         __crop->height = new_mode->height;
 909
 910         if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
 911                 ret = v4l2_ctrl_s_ctrl_int64(ov5645->pixel_clock,
 912                                              new_mode->pixel_clock);
 913                 if (ret < 0)
 914                         return ret;
 915
 916                 ret = v4l2_ctrl_s_ctrl(ov5645->link_freq,
 917                                        new_mode->link_freq);
 918                 if (ret < 0)
 919                         return ret;
 920
 921                 ov5645->current_mode = new_mode;
 922         }
 923
 924         __format = __ov5645_get_pad_format(ov5645, sd_state, format->pad,
 925                                            format->which);
 926         __format->width = __crop->width;
 927         __format->height = __crop->height;
 928         __format->code = MEDIA_BUS_FMT_UYVY8_1X16;
 929         __format->field = V4L2_FIELD_NONE;
 930         __format->colorspace = V4L2_COLORSPACE_SRGB;
 931
 932         format->format = *__format;
 933
 934         return 0;
 935 }
 936
 937 static int ov5645_entity_init_cfg(struct v4l2_subdev *subdev,
 938                                   struct v4l2_subdev_state *sd_state)
 939 {
 940         struct v4l2_subdev_format fmt = { 0 };
 941
 942         fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
 943         fmt.format.width = 1920;
 944         fmt.format.height = 1080;
 945
 946         ov5645_set_format(subdev, sd_state, &fmt);
 947
 948         return 0;
 949 }
 950
 951 static int ov5645_get_selection(struct v4l2_subdev *sd,
 952                            struct v4l2_subdev_state *sd_state,
 953                            struct v4l2_subdev_selection *sel)
 954 {
 955         struct ov5645 *ov5645 = to_ov5645(sd);
 956
 957         if (sel->target != V4L2_SEL_TGT_CROP)
 958                 return -EINVAL;
 959
 960         sel->r = *__ov5645_get_pad_crop(ov5645, sd_state, sel->pad,
 961                                         sel->which);
 962         return 0;
 963 }
 964
 965 static int ov5645_s_stream(struct v4l2_subdev *subdev, int enable)
 966 {
 967         struct ov5645 *ov5645 = to_ov5645(subdev);
 968         int ret;
 969
 970         if (enable) {
 971                 ret = pm_runtime_resume_and_get(ov5645->dev);
 972                 if (ret < 0)
 973                         return ret;
 974
 975                 ret = ov5645_set_register_array(ov5645,
 976                                         ov5645->current_mode->data,
 977                                         ov5645->current_mode->data_size);
 978                 if (ret < 0) {
 979                         dev_err(ov5645->dev, "could not set mode %dx%d\n",
 980                                 ov5645->current_mode->width,
 981                                 ov5645->current_mode->height);
 982                         goto err_rpm_put;
 983                 }
 984                 ret = v4l2_ctrl_handler_setup(&ov5645->ctrls);
 985                 if (ret < 0) {
 986                         dev_err(ov5645->dev, "could not sync v4l2 controls\n");
 987                         goto err_rpm_put;
 988                 }
 989
 990                 ret = ov5645_write_reg(ov5645, OV5645_IO_MIPI_CTRL00, 0x45);
 991                 if (ret < 0)
 992                         goto err_rpm_put;
 993
 994                 ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0,
 995                                        OV5645_SYSTEM_CTRL0_START);
 996                 if (ret < 0)
 997                         goto err_rpm_put;
 998         } else {
 999                 ret = ov5645_write_reg(ov5645, OV5645_IO_MIPI_CTRL00, 0x40);
1000                 if (ret < 0)
1001                         goto stream_off_rpm_put;
1002
1003                 ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0,
1004                                        OV5645_SYSTEM_CTRL0_STOP);
1005
1006                 goto stream_off_rpm_put;
1007         }
1008
1009         return 0;
1010
1011 err_rpm_put:
1012         pm_runtime_put_sync(ov5645->dev);
1013         return ret;
1014
1015 stream_off_rpm_put:
1016         pm_runtime_mark_last_busy(ov5645->dev);
1017         pm_runtime_put_autosuspend(ov5645->dev);
1018         return ret;
1019 }
1020
1021 static const struct v4l2_subdev_video_ops ov5645_video_ops = {
1022         .s_stream = ov5645_s_stream,
1023 };
1024
1025 static const struct v4l2_subdev_pad_ops ov5645_subdev_pad_ops = {
1026         .init_cfg = ov5645_entity_init_cfg,
1027         .enum_mbus_code = ov5645_enum_mbus_code,
1028         .enum_frame_size = ov5645_enum_frame_size,
1029         .get_fmt = ov5645_get_format,
1030         .set_fmt = ov5645_set_format,
1031         .get_selection = ov5645_get_selection,
1032 };
1033
1034 static const struct v4l2_subdev_ops ov5645_subdev_ops = {
1035         .video = &ov5645_video_ops,
1036         .pad = &ov5645_subdev_pad_ops,
1037 };
1038
1039 static int ov5645_probe(struct i2c_client *client)
1040 {
1041         struct device *dev = &client->dev;
1042         struct device_node *endpoint;
1043         struct ov5645 *ov5645;
1044         u8 chip_id_high, chip_id_low;
1045         unsigned int i;
1046         u32 xclk_freq;
1047         int ret;
1048
1049         ov5645 = devm_kzalloc(dev, sizeof(struct ov5645), GFP_KERNEL);
1050         if (!ov5645)
1051                 return -ENOMEM;
1052
1053         ov5645->i2c_client = client;
1054         ov5645->dev = dev;
1055
1056         endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
1057         if (!endpoint) {
1058                 dev_err(dev, "endpoint node not found\n");
1059                 return -EINVAL;
1060         }
1061
1062         ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint),
1063                                          &ov5645->ep);
1064
1065         of_node_put(endpoint);
1066
1067         if (ret < 0) {
1068                 dev_err(dev, "parsing endpoint node failed\n");
1069                 return ret;
1070         }
1071
1072         if (ov5645->ep.bus_type != V4L2_MBUS_CSI2_DPHY) {
1073                 dev_err(dev, "invalid bus type, must be CSI2\n");
1074                 return -EINVAL;
1075         }
1076
1077         /* get system clock (xclk) */
1078         ov5645->xclk = devm_clk_get(dev, NULL);
1079         if (IS_ERR(ov5645->xclk)) {
1080                 dev_err(dev, "could not get xclk");
1081                 return PTR_ERR(ov5645->xclk);
1082         }
1083
1084         ret = of_property_read_u32(dev->of_node, "clock-frequency", &xclk_freq);
1085         if (ret) {
1086                 dev_err(dev, "could not get xclk frequency\n");
1087                 return ret;
1088         }
1089
1090         /* external clock must be 24MHz, allow 1% tolerance */
1091         if (xclk_freq < 23760000 || xclk_freq > 24240000) {
1092                 dev_err(dev, "external clock frequency %u is not supported\n",
1093                         xclk_freq);
1094                 return -EINVAL;
1095         }
1096
1097         ret = clk_set_rate(ov5645->xclk, xclk_freq);
1098         if (ret) {
1099                 dev_err(dev, "could not set xclk frequency\n");
1100                 return ret;
1101         }
1102
1103         for (i = 0; i < OV5645_NUM_SUPPLIES; i++)
1104                 ov5645->supplies[i].supply = ov5645_supply_name[i];
1105
1106         ret = devm_regulator_bulk_get(dev, OV5645_NUM_SUPPLIES,
1107                                       ov5645->supplies);
1108         if (ret < 0)
1109                 return ret;
1110
1111         ov5645->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_HIGH);
1112         if (IS_ERR(ov5645->enable_gpio)) {
1113                 dev_err(dev, "cannot get enable gpio\n");
1114                 return PTR_ERR(ov5645->enable_gpio);
1115         }
1116
1117         ov5645->rst_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
1118         if (IS_ERR(ov5645->rst_gpio)) {
1119                 dev_err(dev, "cannot get reset gpio\n");
1120                 return PTR_ERR(ov5645->rst_gpio);
1121         }
1122
1123         mutex_init(&ov5645->power_lock);
1124
1125         v4l2_ctrl_handler_init(&ov5645->ctrls, 9);
1126         v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1127                           V4L2_CID_SATURATION, -4, 4, 1, 0);
1128         v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1129                           V4L2_CID_HFLIP, 0, 1, 1, 0);
1130         v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1131                           V4L2_CID_VFLIP, 0, 1, 1, 0);
1132         v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1133                           V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
1134         v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1135                           V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
1136         v4l2_ctrl_new_std_menu(&ov5645->ctrls, &ov5645_ctrl_ops,
1137                                V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL,
1138                                0, V4L2_EXPOSURE_AUTO);
1139         v4l2_ctrl_new_std_menu_items(&ov5645->ctrls, &ov5645_ctrl_ops,
1140                                      V4L2_CID_TEST_PATTERN,
1141                                      ARRAY_SIZE(ov5645_test_pattern_menu) - 1,
1142                                      0, 0, ov5645_test_pattern_menu);
1143         ov5645->pixel_clock = v4l2_ctrl_new_std(&ov5645->ctrls,
1144                                                 &ov5645_ctrl_ops,
1145                                                 V4L2_CID_PIXEL_RATE,
1146                                                 1, INT_MAX, 1, 1);
1147         ov5645->link_freq = v4l2_ctrl_new_int_menu(&ov5645->ctrls,
1148                                                    &ov5645_ctrl_ops,
1149                                                    V4L2_CID_LINK_FREQ,
1150                                                    ARRAY_SIZE(link_freq) - 1,
1151                                                    0, link_freq);
1152         if (ov5645->link_freq)
1153                 ov5645->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1154
1155         ov5645->sd.ctrl_handler = &ov5645->ctrls;
1156
1157         if (ov5645->ctrls.error) {
1158                 dev_err(dev, "%s: control initialization error %d\n",
1159                        __func__, ov5645->ctrls.error);
1160                 ret = ov5645->ctrls.error;
1161                 goto free_ctrl;
1162         }
1163
1164         v4l2_i2c_subdev_init(&ov5645->sd, client, &ov5645_subdev_ops);
1165         ov5645->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1166         ov5645->pad.flags = MEDIA_PAD_FL_SOURCE;
1167         ov5645->sd.dev = &client->dev;
1168         ov5645->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1169
1170         ret = media_entity_pads_init(&ov5645->sd.entity, 1, &ov5645->pad);
1171         if (ret < 0) {
1172                 dev_err(dev, "could not register media entity\n");
1173                 goto free_ctrl;
1174         }
1175
1176         ret = ov5645_set_power_on(dev);
1177         if (ret)
1178                 goto free_entity;
1179
1180         ret = ov5645_read_reg(ov5645, OV5645_CHIP_ID_HIGH, &chip_id_high);
1181         if (ret < 0 || chip_id_high != OV5645_CHIP_ID_HIGH_BYTE) {
1182                 dev_err(dev, "could not read ID high\n");
1183                 ret = -ENODEV;
1184                 goto power_down;
1185         }
1186         ret = ov5645_read_reg(ov5645, OV5645_CHIP_ID_LOW, &chip_id_low);
1187         if (ret < 0 || chip_id_low != OV5645_CHIP_ID_LOW_BYTE) {
1188                 dev_err(dev, "could not read ID low\n");
1189                 ret = -ENODEV;
1190                 goto power_down;
1191         }
1192
1193         dev_info(dev, "OV5645 detected at address 0x%02x\n", client->addr);
1194
1195         ret = ov5645_read_reg(ov5645, OV5645_AEC_PK_MANUAL,
1196                               &ov5645->aec_pk_manual);
1197         if (ret < 0) {
1198                 dev_err(dev, "could not read AEC/AGC mode\n");
1199                 ret = -ENODEV;
1200                 goto power_down;
1201         }
1202
1203         ret = ov5645_read_reg(ov5645, OV5645_TIMING_TC_REG20,
1204                               &ov5645->timing_tc_reg20);
1205         if (ret < 0) {
1206                 dev_err(dev, "could not read vflip value\n");
1207                 ret = -ENODEV;
1208                 goto power_down;
1209         }
1210
1211         ret = ov5645_read_reg(ov5645, OV5645_TIMING_TC_REG21,
1212                               &ov5645->timing_tc_reg21);
1213         if (ret < 0) {
1214                 dev_err(dev, "could not read hflip value\n");
1215                 ret = -ENODEV;
1216                 goto power_down;
1217         }
1218
1219         pm_runtime_set_active(dev);
1220         pm_runtime_get_noresume(dev);
1221         pm_runtime_enable(dev);
1222
1223         ov5645_entity_init_cfg(&ov5645->sd, NULL);
1224
1225         ret = v4l2_async_register_subdev(&ov5645->sd);
1226         if (ret < 0) {
1227                 dev_err(dev, "could not register v4l2 device\n");
1228                 goto err_pm_runtime;
1229         }
1230
1231         pm_runtime_set_autosuspend_delay(dev, 1000);
1232         pm_runtime_use_autosuspend(dev);
1233         pm_runtime_mark_last_busy(dev);
1234         pm_runtime_put_autosuspend(dev);
1235
1236         return 0;
1237
1238 err_pm_runtime:
1239         pm_runtime_disable(dev);
1240         pm_runtime_put_noidle(dev);
1241 power_down:
1242         ov5645_set_power_off(dev);
1243 free_entity:
1244         media_entity_cleanup(&ov5645->sd.entity);
1245 free_ctrl:
1246         v4l2_ctrl_handler_free(&ov5645->ctrls);
1247         mutex_destroy(&ov5645->power_lock);
1248
1249         return ret;
1250 }
1251
1252 static void ov5645_remove(struct i2c_client *client)
1253 {
1254         struct v4l2_subdev *sd = i2c_get_clientdata(client);
1255         struct ov5645 *ov5645 = to_ov5645(sd);
1256
1257         v4l2_async_unregister_subdev(&ov5645->sd);
1258         media_entity_cleanup(&ov5645->sd.entity);
1259         v4l2_ctrl_handler_free(&ov5645->ctrls);
1260         pm_runtime_disable(ov5645->dev);
1261         if (!pm_runtime_status_suspended(ov5645->dev))
1262                 ov5645_set_power_off(ov5645->dev);
1263         pm_runtime_set_suspended(ov5645->dev);
1264         mutex_destroy(&ov5645->power_lock);
1265 }
1266
1267 static const struct i2c_device_id ov5645_id[] = {
1268         { "ov5645", 0 },
1269         {}
1270 };
1271 MODULE_DEVICE_TABLE(i2c, ov5645_id);
1272
1273 static const struct of_device_id ov5645_of_match[] = {
1274         { .compatible = "ovti,ov5645" },
1275         { /* sentinel */ }
1276 };
1277 MODULE_DEVICE_TABLE(of, ov5645_of_match);
1278
1279 static const struct dev_pm_ops ov5645_pm_ops = {
1280         SET_RUNTIME_PM_OPS(ov5645_set_power_off, ov5645_set_power_on, NULL)
1281 };
1282
1283 static struct i2c_driver ov5645_i2c_driver = {
1284         .driver = {
1285                 .of_match_table = ov5645_of_match,
1286                 .name  = "ov5645",
1287                 .pm = &ov5645_pm_ops,
1288         },
1289         .probe = ov5645_probe,
1290         .remove = ov5645_remove,
1291         .id_table = ov5645_id,
1292 };
1293
1294 module_i2c_driver(ov5645_i2c_driver);
1295
1296 MODULE_DESCRIPTION("Omnivision OV5645 Camera Driver");
1297 MODULE_AUTHOR("Todor Tomov <todor.tomov@linaro.org>");
1298 MODULE_LICENSE("GPL v2");