drivers/media/i2c/ov5640.c

   1 /*
   2  * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
   3  * Copyright (C) 2014-2017 Mentor Graphics Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  */
  10
  11 #include <linux/clk.h>
  12 #include <linux/clk-provider.h>
  13 #include <linux/clkdev.h>
  14 #include <linux/ctype.h>
  15 #include <linux/delay.h>
  16 #include <linux/device.h>
  17 #include <linux/gpio/consumer.h>
  18 #include <linux/i2c.h>
  19 #include <linux/init.h>
  20 #include <linux/module.h>
  21 #include <linux/of_device.h>
  22 #include <linux/regulator/consumer.h>
  23 #include <linux/slab.h>
  24 #include <linux/types.h>
  25 #include <media/v4l2-async.h>
  26 #include <media/v4l2-ctrls.h>
  27 #include <media/v4l2-device.h>
  28 #include <media/v4l2-fwnode.h>
  29 #include <media/v4l2-subdev.h>
  30
  31 /* min/typical/max system clock (xclk) frequencies */
  32 #define OV5640_XCLK_MIN  6000000
  33 #define OV5640_XCLK_MAX 54000000
  34
  35 #define OV5640_DEFAULT_SLAVE_ID 0x3c
  36
  37 #define OV5640_REG_SYS_RESET02          0x3002
  38 #define OV5640_REG_SYS_CLOCK_ENABLE02   0x3006
  39 #define OV5640_REG_SYS_CTRL0            0x3008
  40 #define OV5640_REG_CHIP_ID              0x300a
  41 #define OV5640_REG_IO_MIPI_CTRL00       0x300e
  42 #define OV5640_REG_PAD_OUTPUT_ENABLE01  0x3017
  43 #define OV5640_REG_PAD_OUTPUT_ENABLE02  0x3018
  44 #define OV5640_REG_PAD_OUTPUT00         0x3019
  45 #define OV5640_REG_SYSTEM_CONTROL1      0x302e
  46 #define OV5640_REG_SC_PLL_CTRL0         0x3034
  47 #define OV5640_REG_SC_PLL_CTRL1         0x3035
  48 #define OV5640_REG_SC_PLL_CTRL2         0x3036
  49 #define OV5640_REG_SC_PLL_CTRL3         0x3037
  50 #define OV5640_REG_SLAVE_ID             0x3100
  51 #define OV5640_REG_SCCB_SYS_CTRL1       0x3103
  52 #define OV5640_REG_SYS_ROOT_DIVIDER     0x3108
  53 #define OV5640_REG_AWB_R_GAIN           0x3400
  54 #define OV5640_REG_AWB_G_GAIN           0x3402
  55 #define OV5640_REG_AWB_B_GAIN           0x3404
  56 #define OV5640_REG_AWB_MANUAL_CTRL      0x3406
  57 #define OV5640_REG_AEC_PK_EXPOSURE_HI   0x3500
  58 #define OV5640_REG_AEC_PK_EXPOSURE_MED  0x3501
  59 #define OV5640_REG_AEC_PK_EXPOSURE_LO   0x3502
  60 #define OV5640_REG_AEC_PK_MANUAL        0x3503
  61 #define OV5640_REG_AEC_PK_REAL_GAIN     0x350a
  62 #define OV5640_REG_AEC_PK_VTS           0x350c
  63 #define OV5640_REG_TIMING_DVPHO         0x3808
  64 #define OV5640_REG_TIMING_DVPVO         0x380a
  65 #define OV5640_REG_TIMING_HTS           0x380c
  66 #define OV5640_REG_TIMING_VTS           0x380e
  67 #define OV5640_REG_TIMING_TC_REG20      0x3820
  68 #define OV5640_REG_TIMING_TC_REG21      0x3821
  69 #define OV5640_REG_AEC_CTRL00           0x3a00
  70 #define OV5640_REG_AEC_B50_STEP         0x3a08
  71 #define OV5640_REG_AEC_B60_STEP         0x3a0a
  72 #define OV5640_REG_AEC_CTRL0D           0x3a0d
  73 #define OV5640_REG_AEC_CTRL0E           0x3a0e
  74 #define OV5640_REG_AEC_CTRL0F           0x3a0f
  75 #define OV5640_REG_AEC_CTRL10           0x3a10
  76 #define OV5640_REG_AEC_CTRL11           0x3a11
  77 #define OV5640_REG_AEC_CTRL1B           0x3a1b
  78 #define OV5640_REG_AEC_CTRL1E           0x3a1e
  79 #define OV5640_REG_AEC_CTRL1F           0x3a1f
  80 #define OV5640_REG_HZ5060_CTRL00        0x3c00
  81 #define OV5640_REG_HZ5060_CTRL01        0x3c01
  82 #define OV5640_REG_SIGMADELTA_CTRL0C    0x3c0c
  83 #define OV5640_REG_FRAME_CTRL01         0x4202
  84 #define OV5640_REG_FORMAT_CONTROL00     0x4300
  85 #define OV5640_REG_POLARITY_CTRL00      0x4740
  86 #define OV5640_REG_MIPI_CTRL00          0x4800
  87 #define OV5640_REG_DEBUG_MODE           0x4814
  88 #define OV5640_REG_ISP_FORMAT_MUX_CTRL  0x501f
  89 #define OV5640_REG_PRE_ISP_TEST_SET1    0x503d
  90 #define OV5640_REG_SDE_CTRL0            0x5580
  91 #define OV5640_REG_SDE_CTRL1            0x5581
  92 #define OV5640_REG_SDE_CTRL3            0x5583
  93 #define OV5640_REG_SDE_CTRL4            0x5584
  94 #define OV5640_REG_SDE_CTRL5            0x5585
  95 #define OV5640_REG_AVG_READOUT          0x56a1
  96
  97 #define OV5640_SCLK2X_ROOT_DIVIDER_DEFAULT      1
  98 #define OV5640_SCLK_ROOT_DIVIDER_DEFAULT        2
  99
 100 enum ov5640_mode_id {
 101         OV5640_MODE_QCIF_176_144 = 0,
 102         OV5640_MODE_QVGA_320_240,
 103         OV5640_MODE_VGA_640_480,
 104         OV5640_MODE_NTSC_720_480,
 105         OV5640_MODE_PAL_720_576,
 106         OV5640_MODE_XGA_1024_768,
 107         OV5640_MODE_720P_1280_720,
 108         OV5640_MODE_1080P_1920_1080,
 109         OV5640_MODE_QSXGA_2592_1944,
 110         OV5640_NUM_MODES,
 111 };
 112
 113 enum ov5640_frame_rate {
 114         OV5640_15_FPS = 0,
 115         OV5640_30_FPS,
 116         OV5640_NUM_FRAMERATES,
 117 };
 118
 119 struct ov5640_pixfmt {
 120         u32 code;
 121         u32 colorspace;
 122 };
 123
 124 static const struct ov5640_pixfmt ov5640_formats[] = {
 125         { MEDIA_BUS_FMT_JPEG_1X8, V4L2_COLORSPACE_JPEG, },
 126         { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_SRGB, },
 127         { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_SRGB, },
 128         { MEDIA_BUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB, },
 129         { MEDIA_BUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB, },
 130 };
 131
 132 /*
 133  * FIXME: remove this when a subdev API becomes available
 134  * to set the MIPI CSI-2 virtual channel.
 135  */
 136 static unsigned int virtual_channel;
 137 module_param(virtual_channel, uint, 0444);
 138 MODULE_PARM_DESC(virtual_channel,
 139                  "MIPI CSI-2 virtual channel (0..3), default 0");
 140
 141 static const int ov5640_framerates[] = {
 142         [OV5640_15_FPS] = 15,
 143         [OV5640_30_FPS] = 30,
 144 };
 145
 146 /* regulator supplies */
 147 static const char * const ov5640_supply_name[] = {
 148         "DOVDD", /* Digital I/O (1.8V) supply */
 149         "DVDD",  /* Digital Core (1.5V) supply */
 150         "AVDD",  /* Analog (2.8V) supply */
 151 };
 152
 153 #define OV5640_NUM_SUPPLIES ARRAY_SIZE(ov5640_supply_name)
 154
 155 /*
 156  * Image size under 1280 * 960 are SUBSAMPLING
 157  * Image size upper 1280 * 960 are SCALING
 158  */
 159 enum ov5640_downsize_mode {
 160         SUBSAMPLING,
 161         SCALING,
 162 };
 163
 164 struct reg_value {
 165         u16 reg_addr;
 166         u8 val;
 167         u8 mask;
 168         u32 delay_ms;
 169 };
 170
 171 struct ov5640_mode_info {
 172         enum ov5640_mode_id id;
 173         enum ov5640_downsize_mode dn_mode;
 174         u32 hact;
 175         u32 htot;
 176         u32 vact;
 177         u32 vtot;
 178         const struct reg_value *reg_data;
 179         u32 reg_data_size;
 180 };
 181
 182 struct ov5640_ctrls {
 183         struct v4l2_ctrl_handler handler;
 184         struct {
 185                 struct v4l2_ctrl *auto_exp;
 186                 struct v4l2_ctrl *exposure;
 187         };
 188         struct {
 189                 struct v4l2_ctrl *auto_wb;
 190                 struct v4l2_ctrl *blue_balance;
 191                 struct v4l2_ctrl *red_balance;
 192         };
 193         struct {
 194                 struct v4l2_ctrl *auto_gain;
 195                 struct v4l2_ctrl *gain;
 196         };
 197         struct v4l2_ctrl *brightness;
 198         struct v4l2_ctrl *light_freq;
 199         struct v4l2_ctrl *saturation;
 200         struct v4l2_ctrl *contrast;
 201         struct v4l2_ctrl *hue;
 202         struct v4l2_ctrl *test_pattern;
 203         struct v4l2_ctrl *hflip;
 204         struct v4l2_ctrl *vflip;
 205 };
 206
 207 struct ov5640_dev {
 208         struct i2c_client *i2c_client;
 209         struct v4l2_subdev sd;
 210         struct media_pad pad;
 211         struct v4l2_fwnode_endpoint ep; /* the parsed DT endpoint info */
 212         struct clk *xclk; /* system clock to OV5640 */
 213         u32 xclk_freq;
 214
 215         struct regulator_bulk_data supplies[OV5640_NUM_SUPPLIES];
 216         struct gpio_desc *reset_gpio;
 217         struct gpio_desc *pwdn_gpio;
 218         bool   upside_down;
 219
 220         /* lock to protect all members below */
 221         struct mutex lock;
 222
 223         int power_count;
 224
 225         struct v4l2_mbus_framefmt fmt;
 226         bool pending_fmt_change;
 227
 228         const struct ov5640_mode_info *current_mode;
 229         const struct ov5640_mode_info *last_mode;
 230         enum ov5640_frame_rate current_fr;
 231         struct v4l2_fract frame_interval;
 232
 233         struct ov5640_ctrls ctrls;
 234
 235         u32 prev_sysclk, prev_hts;
 236         u32 ae_low, ae_high, ae_target;
 237
 238         bool pending_mode_change;
 239         bool streaming;
 240 };
 241
 242 static inline struct ov5640_dev *to_ov5640_dev(struct v4l2_subdev *sd)
 243 {
 244         return container_of(sd, struct ov5640_dev, sd);
 245 }
 246
 247 static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
 248 {
 249         return &container_of(ctrl->handler, struct ov5640_dev,
 250                              ctrls.handler)->sd;
 251 }
 252
 253 /*
 254  * FIXME: all of these register tables are likely filled with
 255  * entries that set the register to their power-on default values,
 256  * and which are otherwise not touched by this driver. Those entries
 257  * should be identified and removed to speed register load time
 258  * over i2c.
 259  */
 260 /* YUV422 UYVY VGA@30fps */
 261 static const struct reg_value ov5640_init_setting_30fps_VGA[] = {
 262         {0x3103, 0x11, 0, 0}, {0x3008, 0x82, 0, 5}, {0x3008, 0x42, 0, 0},
 263         {0x3103, 0x03, 0, 0}, {0x3017, 0x00, 0, 0}, {0x3018, 0x00, 0, 0},
 264         {0x3034, 0x18, 0, 0}, {0x3035, 0x14, 0, 0}, {0x3036, 0x38, 0, 0},
 265         {0x3037, 0x13, 0, 0}, {0x3630, 0x36, 0, 0},
 266         {0x3631, 0x0e, 0, 0}, {0x3632, 0xe2, 0, 0}, {0x3633, 0x12, 0, 0},
 267         {0x3621, 0xe0, 0, 0}, {0x3704, 0xa0, 0, 0}, {0x3703, 0x5a, 0, 0},
 268         {0x3715, 0x78, 0, 0}, {0x3717, 0x01, 0, 0}, {0x370b, 0x60, 0, 0},
 269         {0x3705, 0x1a, 0, 0}, {0x3905, 0x02, 0, 0}, {0x3906, 0x10, 0, 0},
 270         {0x3901, 0x0a, 0, 0}, {0x3731, 0x12, 0, 0}, {0x3600, 0x08, 0, 0},
 271         {0x3601, 0x33, 0, 0}, {0x302d, 0x60, 0, 0}, {0x3620, 0x52, 0, 0},
 272         {0x371b, 0x20, 0, 0}, {0x471c, 0x50, 0, 0}, {0x3a13, 0x43, 0, 0},
 273         {0x3a18, 0x00, 0, 0}, {0x3a19, 0xf8, 0, 0}, {0x3635, 0x13, 0, 0},
 274         {0x3636, 0x03, 0, 0}, {0x3634, 0x40, 0, 0}, {0x3622, 0x01, 0, 0},
 275         {0x3c01, 0xa4, 0, 0}, {0x3c04, 0x28, 0, 0}, {0x3c05, 0x98, 0, 0},
 276         {0x3c06, 0x00, 0, 0}, {0x3c07, 0x08, 0, 0}, {0x3c08, 0x00, 0, 0},
 277         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 278         {0x3820, 0x41, 0, 0}, {0x3821, 0x07, 0, 0}, {0x3814, 0x31, 0, 0},
 279         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 280         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 281         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 282         {0x3810, 0x00, 0, 0},
 283         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 284         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 285         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 286         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 287         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 288         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 289         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x3000, 0x00, 0, 0},
 290         {0x3002, 0x1c, 0, 0}, {0x3004, 0xff, 0, 0}, {0x3006, 0xc3, 0, 0},
 291         {0x302e, 0x08, 0, 0}, {0x4300, 0x3f, 0, 0},
 292         {0x501f, 0x00, 0, 0}, {0x4713, 0x03, 0, 0}, {0x4407, 0x04, 0, 0},
 293         {0x440e, 0x00, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 294         {0x4837, 0x0a, 0, 0}, {0x3824, 0x02, 0, 0},
 295         {0x5000, 0xa7, 0, 0}, {0x5001, 0xa3, 0, 0}, {0x5180, 0xff, 0, 0},
 296         {0x5181, 0xf2, 0, 0}, {0x5182, 0x00, 0, 0}, {0x5183, 0x14, 0, 0},
 297         {0x5184, 0x25, 0, 0}, {0x5185, 0x24, 0, 0}, {0x5186, 0x09, 0, 0},
 298         {0x5187, 0x09, 0, 0}, {0x5188, 0x09, 0, 0}, {0x5189, 0x88, 0, 0},
 299         {0x518a, 0x54, 0, 0}, {0x518b, 0xee, 0, 0}, {0x518c, 0xb2, 0, 0},
 300         {0x518d, 0x50, 0, 0}, {0x518e, 0x34, 0, 0}, {0x518f, 0x6b, 0, 0},
 301         {0x5190, 0x46, 0, 0}, {0x5191, 0xf8, 0, 0}, {0x5192, 0x04, 0, 0},
 302         {0x5193, 0x70, 0, 0}, {0x5194, 0xf0, 0, 0}, {0x5195, 0xf0, 0, 0},
 303         {0x5196, 0x03, 0, 0}, {0x5197, 0x01, 0, 0}, {0x5198, 0x04, 0, 0},
 304         {0x5199, 0x6c, 0, 0}, {0x519a, 0x04, 0, 0}, {0x519b, 0x00, 0, 0},
 305         {0x519c, 0x09, 0, 0}, {0x519d, 0x2b, 0, 0}, {0x519e, 0x38, 0, 0},
 306         {0x5381, 0x1e, 0, 0}, {0x5382, 0x5b, 0, 0}, {0x5383, 0x08, 0, 0},
 307         {0x5384, 0x0a, 0, 0}, {0x5385, 0x7e, 0, 0}, {0x5386, 0x88, 0, 0},
 308         {0x5387, 0x7c, 0, 0}, {0x5388, 0x6c, 0, 0}, {0x5389, 0x10, 0, 0},
 309         {0x538a, 0x01, 0, 0}, {0x538b, 0x98, 0, 0}, {0x5300, 0x08, 0, 0},
 310         {0x5301, 0x30, 0, 0}, {0x5302, 0x10, 0, 0}, {0x5303, 0x00, 0, 0},
 311         {0x5304, 0x08, 0, 0}, {0x5305, 0x30, 0, 0}, {0x5306, 0x08, 0, 0},
 312         {0x5307, 0x16, 0, 0}, {0x5309, 0x08, 0, 0}, {0x530a, 0x30, 0, 0},
 313         {0x530b, 0x04, 0, 0}, {0x530c, 0x06, 0, 0}, {0x5480, 0x01, 0, 0},
 314         {0x5481, 0x08, 0, 0}, {0x5482, 0x14, 0, 0}, {0x5483, 0x28, 0, 0},
 315         {0x5484, 0x51, 0, 0}, {0x5485, 0x65, 0, 0}, {0x5486, 0x71, 0, 0},
 316         {0x5487, 0x7d, 0, 0}, {0x5488, 0x87, 0, 0}, {0x5489, 0x91, 0, 0},
 317         {0x548a, 0x9a, 0, 0}, {0x548b, 0xaa, 0, 0}, {0x548c, 0xb8, 0, 0},
 318         {0x548d, 0xcd, 0, 0}, {0x548e, 0xdd, 0, 0}, {0x548f, 0xea, 0, 0},
 319         {0x5490, 0x1d, 0, 0}, {0x5580, 0x02, 0, 0}, {0x5583, 0x40, 0, 0},
 320         {0x5584, 0x10, 0, 0}, {0x5589, 0x10, 0, 0}, {0x558a, 0x00, 0, 0},
 321         {0x558b, 0xf8, 0, 0}, {0x5800, 0x23, 0, 0}, {0x5801, 0x14, 0, 0},
 322         {0x5802, 0x0f, 0, 0}, {0x5803, 0x0f, 0, 0}, {0x5804, 0x12, 0, 0},
 323         {0x5805, 0x26, 0, 0}, {0x5806, 0x0c, 0, 0}, {0x5807, 0x08, 0, 0},
 324         {0x5808, 0x05, 0, 0}, {0x5809, 0x05, 0, 0}, {0x580a, 0x08, 0, 0},
 325         {0x580b, 0x0d, 0, 0}, {0x580c, 0x08, 0, 0}, {0x580d, 0x03, 0, 0},
 326         {0x580e, 0x00, 0, 0}, {0x580f, 0x00, 0, 0}, {0x5810, 0x03, 0, 0},
 327         {0x5811, 0x09, 0, 0}, {0x5812, 0x07, 0, 0}, {0x5813, 0x03, 0, 0},
 328         {0x5814, 0x00, 0, 0}, {0x5815, 0x01, 0, 0}, {0x5816, 0x03, 0, 0},
 329         {0x5817, 0x08, 0, 0}, {0x5818, 0x0d, 0, 0}, {0x5819, 0x08, 0, 0},
 330         {0x581a, 0x05, 0, 0}, {0x581b, 0x06, 0, 0}, {0x581c, 0x08, 0, 0},
 331         {0x581d, 0x0e, 0, 0}, {0x581e, 0x29, 0, 0}, {0x581f, 0x17, 0, 0},
 332         {0x5820, 0x11, 0, 0}, {0x5821, 0x11, 0, 0}, {0x5822, 0x15, 0, 0},
 333         {0x5823, 0x28, 0, 0}, {0x5824, 0x46, 0, 0}, {0x5825, 0x26, 0, 0},
 334         {0x5826, 0x08, 0, 0}, {0x5827, 0x26, 0, 0}, {0x5828, 0x64, 0, 0},
 335         {0x5829, 0x26, 0, 0}, {0x582a, 0x24, 0, 0}, {0x582b, 0x22, 0, 0},
 336         {0x582c, 0x24, 0, 0}, {0x582d, 0x24, 0, 0}, {0x582e, 0x06, 0, 0},
 337         {0x582f, 0x22, 0, 0}, {0x5830, 0x40, 0, 0}, {0x5831, 0x42, 0, 0},
 338         {0x5832, 0x24, 0, 0}, {0x5833, 0x26, 0, 0}, {0x5834, 0x24, 0, 0},
 339         {0x5835, 0x22, 0, 0}, {0x5836, 0x22, 0, 0}, {0x5837, 0x26, 0, 0},
 340         {0x5838, 0x44, 0, 0}, {0x5839, 0x24, 0, 0}, {0x583a, 0x26, 0, 0},
 341         {0x583b, 0x28, 0, 0}, {0x583c, 0x42, 0, 0}, {0x583d, 0xce, 0, 0},
 342         {0x5025, 0x00, 0, 0}, {0x3a0f, 0x30, 0, 0}, {0x3a10, 0x28, 0, 0},
 343         {0x3a1b, 0x30, 0, 0}, {0x3a1e, 0x26, 0, 0}, {0x3a11, 0x60, 0, 0},
 344         {0x3a1f, 0x14, 0, 0}, {0x3008, 0x02, 0, 0}, {0x3c00, 0x04, 0, 300},
 345 };
 346
 347 static const struct reg_value ov5640_setting_30fps_VGA_640_480[] = {
 348         {0x3035, 0x14, 0, 0}, {0x3036, 0x38, 0, 0}, {0x3c07, 0x08, 0, 0},
 349         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 350         {0x3814, 0x31, 0, 0},
 351         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 352         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 353         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 354         {0x3810, 0x00, 0, 0},
 355         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 356         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 357         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 358         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x0e, 0, 0},
 359         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 360         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 361         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 362         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 363         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0}, {0x3503, 0x00, 0, 0},
 364 };
 365
 366 static const struct reg_value ov5640_setting_15fps_VGA_640_480[] = {
 367         {0x3035, 0x22, 0, 0}, {0x3036, 0x38, 0, 0}, {0x3c07, 0x08, 0, 0},
 368         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 369         {0x3814, 0x31, 0, 0},
 370         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 371         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 372         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 373         {0x3810, 0x00, 0, 0},
 374         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 375         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 376         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 377         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 378         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 379         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 380         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 381         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 382         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 383 };
 384
 385 static const struct reg_value ov5640_setting_30fps_XGA_1024_768[] = {
 386         {0x3035, 0x14, 0, 0}, {0x3036, 0x38, 0, 0}, {0x3c07, 0x08, 0, 0},
 387         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 388         {0x3814, 0x31, 0, 0},
 389         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 390         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 391         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 392         {0x3810, 0x00, 0, 0},
 393         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 394         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 395         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 396         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x0e, 0, 0},
 397         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 398         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 399         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 400         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 401         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0}, {0x3503, 0x00, 0, 0},
 402         {0x3035, 0x12, 0, 0},
 403 };
 404
 405 static const struct reg_value ov5640_setting_15fps_XGA_1024_768[] = {
 406         {0x3035, 0x22, 0, 0}, {0x3036, 0x38, 0, 0}, {0x3c07, 0x08, 0, 0},
 407         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 408         {0x3814, 0x31, 0, 0},
 409         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 410         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 411         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 412         {0x3810, 0x00, 0, 0},
 413         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 414         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 415         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 416         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 417         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 418         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 419         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 420         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 421         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 422 };
 423
 424 static const struct reg_value ov5640_setting_30fps_QVGA_320_240[] = {
 425         {0x3035, 0x14, 0, 0}, {0x3036, 0x38, 0, 0}, {0x3c07, 0x08, 0, 0},
 426         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 427         {0x3814, 0x31, 0, 0},
 428         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 429         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 430         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 431         {0x3810, 0x00, 0, 0},
 432         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 433         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 434         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 435         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 436         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 437         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 438         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 439         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 440         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 441 };
 442
 443 static const struct reg_value ov5640_setting_15fps_QVGA_320_240[] = {
 444         {0x3035, 0x22, 0, 0}, {0x3036, 0x38, 0, 0}, {0x3c07, 0x08, 0, 0},
 445         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 446         {0x3814, 0x31, 0, 0},
 447         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 448         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 449         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 450         {0x3810, 0x00, 0, 0},
 451         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 452         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 453         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 454         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 455         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 456         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 457         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 458         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 459         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 460 };
 461
 462 static const struct reg_value ov5640_setting_30fps_QCIF_176_144[] = {
 463         {0x3035, 0x14, 0, 0}, {0x3036, 0x38, 0, 0}, {0x3c07, 0x08, 0, 0},
 464         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 465         {0x3814, 0x31, 0, 0},
 466         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 467         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 468         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 469         {0x3810, 0x00, 0, 0},
 470         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 471         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 472         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 473         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 474         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 475         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 476         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 477         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 478         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 479 };
 480
 481 static const struct reg_value ov5640_setting_15fps_QCIF_176_144[] = {
 482         {0x3035, 0x22, 0, 0}, {0x3036, 0x38, 0, 0}, {0x3c07, 0x08, 0, 0},
 483         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 484         {0x3814, 0x31, 0, 0},
 485         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 486         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 487         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 488         {0x3810, 0x00, 0, 0},
 489         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 490         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 491         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 492         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 493         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 494         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 495         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 496         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 497         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 498 };
 499
 500 static const struct reg_value ov5640_setting_30fps_NTSC_720_480[] = {
 501         {0x3035, 0x12, 0, 0}, {0x3036, 0x38, 0, 0}, {0x3c07, 0x08, 0, 0},
 502         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 503         {0x3814, 0x31, 0, 0},
 504         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 505         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 506         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 507         {0x3810, 0x00, 0, 0},
 508         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x3c, 0, 0},
 509         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 510         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 511         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 512         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 513         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 514         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 515         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 516         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 517 };
 518
 519 static const struct reg_value ov5640_setting_15fps_NTSC_720_480[] = {
 520         {0x3035, 0x22, 0, 0}, {0x3036, 0x38, 0, 0}, {0x3c07, 0x08, 0, 0},
 521         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 522         {0x3814, 0x31, 0, 0},
 523         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 524         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 525         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 526         {0x3810, 0x00, 0, 0},
 527         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x3c, 0, 0},
 528         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 529         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 530         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 531         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 532         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 533         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 534         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 535         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 536 };
 537
 538 static const struct reg_value ov5640_setting_30fps_PAL_720_576[] = {
 539         {0x3035, 0x12, 0, 0}, {0x3036, 0x38, 0, 0}, {0x3c07, 0x08, 0, 0},
 540         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 541         {0x3814, 0x31, 0, 0},
 542         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 543         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 544         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 545         {0x3810, 0x00, 0, 0},
 546         {0x3811, 0x38, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 547         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 548         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 549         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 550         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 551         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 552         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 553         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 554         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 555 };
 556
 557 static const struct reg_value ov5640_setting_15fps_PAL_720_576[] = {
 558         {0x3035, 0x22, 0, 0}, {0x3036, 0x38, 0, 0}, {0x3c07, 0x08, 0, 0},
 559         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 560         {0x3814, 0x31, 0, 0},
 561         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 562         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 563         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 564         {0x3810, 0x00, 0, 0},
 565         {0x3811, 0x38, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 566         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 567         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 568         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 569         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 570         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 571         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 572         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 573         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 574 };
 575
 576 static const struct reg_value ov5640_setting_30fps_720P_1280_720[] = {
 577         {0x3008, 0x42, 0, 0},
 578         {0x3035, 0x21, 0, 0}, {0x3036, 0x54, 0, 0}, {0x3c07, 0x07, 0, 0},
 579         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 580         {0x3814, 0x31, 0, 0},
 581         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 582         {0x3802, 0x00, 0, 0}, {0x3803, 0xfa, 0, 0}, {0x3804, 0x0a, 0, 0},
 583         {0x3805, 0x3f, 0, 0}, {0x3806, 0x06, 0, 0}, {0x3807, 0xa9, 0, 0},
 584         {0x3810, 0x00, 0, 0},
 585         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
 586         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 587         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x02, 0, 0},
 588         {0x3a03, 0xe4, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0xbc, 0, 0},
 589         {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x72, 0, 0}, {0x3a0e, 0x01, 0, 0},
 590         {0x3a0d, 0x02, 0, 0}, {0x3a14, 0x02, 0, 0}, {0x3a15, 0xe4, 0, 0},
 591         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x02, 0, 0},
 592         {0x4407, 0x04, 0, 0}, {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0},
 593         {0x3824, 0x04, 0, 0}, {0x5001, 0x83, 0, 0}, {0x4005, 0x1a, 0, 0},
 594         {0x3008, 0x02, 0, 0}, {0x3503, 0,    0, 0},
 595 };
 596
 597 static const struct reg_value ov5640_setting_15fps_720P_1280_720[] = {
 598         {0x3035, 0x41, 0, 0}, {0x3036, 0x54, 0, 0}, {0x3c07, 0x07, 0, 0},
 599         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 600         {0x3814, 0x31, 0, 0},
 601         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 602         {0x3802, 0x00, 0, 0}, {0x3803, 0xfa, 0, 0}, {0x3804, 0x0a, 0, 0},
 603         {0x3805, 0x3f, 0, 0}, {0x3806, 0x06, 0, 0}, {0x3807, 0xa9, 0, 0},
 604         {0x3810, 0x00, 0, 0},
 605         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
 606         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 607         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x02, 0, 0},
 608         {0x3a03, 0xe4, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0xbc, 0, 0},
 609         {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x72, 0, 0}, {0x3a0e, 0x01, 0, 0},
 610         {0x3a0d, 0x02, 0, 0}, {0x3a14, 0x02, 0, 0}, {0x3a15, 0xe4, 0, 0},
 611         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x02, 0, 0},
 612         {0x4407, 0x04, 0, 0}, {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0},
 613         {0x3824, 0x04, 0, 0}, {0x5001, 0x83, 0, 0},
 614 };
 615
 616 static const struct reg_value ov5640_setting_30fps_1080P_1920_1080[] = {
 617         {0x3008, 0x42, 0, 0},
 618         {0x3035, 0x21, 0, 0}, {0x3036, 0x54, 0, 0}, {0x3c07, 0x08, 0, 0},
 619         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 620         {0x3814, 0x11, 0, 0},
 621         {0x3815, 0x11, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 622         {0x3802, 0x00, 0, 0}, {0x3803, 0x00, 0, 0}, {0x3804, 0x0a, 0, 0},
 623         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9f, 0, 0},
 624         {0x3810, 0x00, 0, 0},
 625         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
 626         {0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0},
 627         {0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0},
 628         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 629         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 630         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 631         {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0}, {0x4713, 0x03, 0, 0},
 632         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 633         {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 0}, {0x3035, 0x11, 0, 0},
 634         {0x3036, 0x54, 0, 0}, {0x3c07, 0x07, 0, 0}, {0x3c08, 0x00, 0, 0},
 635         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 636         {0x3800, 0x01, 0, 0}, {0x3801, 0x50, 0, 0}, {0x3802, 0x01, 0, 0},
 637         {0x3803, 0xb2, 0, 0}, {0x3804, 0x08, 0, 0}, {0x3805, 0xef, 0, 0},
 638         {0x3806, 0x05, 0, 0}, {0x3807, 0xf1, 0, 0},
 639         {0x3612, 0x2b, 0, 0}, {0x3708, 0x64, 0, 0},
 640         {0x3a02, 0x04, 0, 0}, {0x3a03, 0x60, 0, 0}, {0x3a08, 0x01, 0, 0},
 641         {0x3a09, 0x50, 0, 0}, {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x18, 0, 0},
 642         {0x3a0e, 0x03, 0, 0}, {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x04, 0, 0},
 643         {0x3a15, 0x60, 0, 0}, {0x4713, 0x02, 0, 0}, {0x4407, 0x04, 0, 0},
 644         {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0}, {0x3824, 0x04, 0, 0},
 645         {0x4005, 0x1a, 0, 0}, {0x3008, 0x02, 0, 0},
 646         {0x3503, 0, 0, 0},
 647 };
 648
 649 static const struct reg_value ov5640_setting_15fps_1080P_1920_1080[] = {
 650         {0x3008, 0x42, 0, 0},
 651         {0x3035, 0x21, 0, 0}, {0x3036, 0x54, 0, 0}, {0x3c07, 0x08, 0, 0},
 652         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 653         {0x3814, 0x11, 0, 0},
 654         {0x3815, 0x11, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 655         {0x3802, 0x00, 0, 0}, {0x3803, 0x00, 0, 0}, {0x3804, 0x0a, 0, 0},
 656         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9f, 0, 0},
 657         {0x3810, 0x00, 0, 0},
 658         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 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}, {0x4713, 0x03, 0, 0},
 665         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 666         {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 0}, {0x3035, 0x21, 0, 0},
 667         {0x3036, 0x54, 0, 1}, {0x3c07, 0x07, 0, 0}, {0x3c08, 0x00, 0, 0},
 668         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 669         {0x3800, 0x01, 0, 0}, {0x3801, 0x50, 0, 0}, {0x3802, 0x01, 0, 0},
 670         {0x3803, 0xb2, 0, 0}, {0x3804, 0x08, 0, 0}, {0x3805, 0xef, 0, 0},
 671         {0x3806, 0x05, 0, 0}, {0x3807, 0xf1, 0, 0},
 672         {0x3612, 0x2b, 0, 0}, {0x3708, 0x64, 0, 0},
 673         {0x3a02, 0x04, 0, 0}, {0x3a03, 0x60, 0, 0}, {0x3a08, 0x01, 0, 0},
 674         {0x3a09, 0x50, 0, 0}, {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x18, 0, 0},
 675         {0x3a0e, 0x03, 0, 0}, {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x04, 0, 0},
 676         {0x3a15, 0x60, 0, 0}, {0x4713, 0x02, 0, 0}, {0x4407, 0x04, 0, 0},
 677         {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0}, {0x3824, 0x04, 0, 0},
 678         {0x4005, 0x1a, 0, 0}, {0x3008, 0x02, 0, 0}, {0x3503, 0, 0, 0},
 679 };
 680
 681 static const struct reg_value ov5640_setting_15fps_QSXGA_2592_1944[] = {
 682         {0x3035, 0x21, 0, 0}, {0x3036, 0x54, 0, 0}, {0x3c07, 0x08, 0, 0},
 683         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 684         {0x3814, 0x11, 0, 0},
 685         {0x3815, 0x11, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 686         {0x3802, 0x00, 0, 0}, {0x3803, 0x00, 0, 0}, {0x3804, 0x0a, 0, 0},
 687         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9f, 0, 0},
 688         {0x3810, 0x00, 0, 0},
 689         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
 690         {0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0},
 691         {0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0},
 692         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 693         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 694         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 695         {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0}, {0x4713, 0x03, 0, 0},
 696         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 697         {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 70},
 698 };
 699
 700 /* power-on sensor init reg table */
 701 static const struct ov5640_mode_info ov5640_mode_init_data = {
 702         0, SUBSAMPLING, 640, 1896, 480, 984,
 703         ov5640_init_setting_30fps_VGA,
 704         ARRAY_SIZE(ov5640_init_setting_30fps_VGA),
 705 };
 706
 707 static const struct ov5640_mode_info
 708 ov5640_mode_data[OV5640_NUM_FRAMERATES][OV5640_NUM_MODES] = {
 709         {
 710                 {OV5640_MODE_QCIF_176_144, SUBSAMPLING,
 711                  176, 1896, 144, 984,
 712                  ov5640_setting_15fps_QCIF_176_144,
 713                  ARRAY_SIZE(ov5640_setting_15fps_QCIF_176_144)},
 714                 {OV5640_MODE_QVGA_320_240, SUBSAMPLING,
 715                  320, 1896, 240, 984,
 716                  ov5640_setting_15fps_QVGA_320_240,
 717                  ARRAY_SIZE(ov5640_setting_15fps_QVGA_320_240)},
 718                 {OV5640_MODE_VGA_640_480, SUBSAMPLING,
 719                  640, 1896, 480, 1080,
 720                  ov5640_setting_15fps_VGA_640_480,
 721                  ARRAY_SIZE(ov5640_setting_15fps_VGA_640_480)},
 722                 {OV5640_MODE_NTSC_720_480, SUBSAMPLING,
 723                  720, 1896, 480, 984,
 724                  ov5640_setting_15fps_NTSC_720_480,
 725                  ARRAY_SIZE(ov5640_setting_15fps_NTSC_720_480)},
 726                 {OV5640_MODE_PAL_720_576, SUBSAMPLING,
 727                  720, 1896, 576, 984,
 728                  ov5640_setting_15fps_PAL_720_576,
 729                  ARRAY_SIZE(ov5640_setting_15fps_PAL_720_576)},
 730                 {OV5640_MODE_XGA_1024_768, SUBSAMPLING,
 731                  1024, 1896, 768, 1080,
 732                  ov5640_setting_15fps_XGA_1024_768,
 733                  ARRAY_SIZE(ov5640_setting_15fps_XGA_1024_768)},
 734                 {OV5640_MODE_720P_1280_720, SUBSAMPLING,
 735                  1280, 1892, 720, 740,
 736                  ov5640_setting_15fps_720P_1280_720,
 737                  ARRAY_SIZE(ov5640_setting_15fps_720P_1280_720)},
 738                 {OV5640_MODE_1080P_1920_1080, SCALING,
 739                  1920, 2500, 1080, 1120,
 740                  ov5640_setting_15fps_1080P_1920_1080,
 741                  ARRAY_SIZE(ov5640_setting_15fps_1080P_1920_1080)},
 742                 {OV5640_MODE_QSXGA_2592_1944, SCALING,
 743                  2592, 2844, 1944, 1968,
 744                  ov5640_setting_15fps_QSXGA_2592_1944,
 745                  ARRAY_SIZE(ov5640_setting_15fps_QSXGA_2592_1944)},
 746         }, {
 747                 {OV5640_MODE_QCIF_176_144, SUBSAMPLING,
 748                  176, 1896, 144, 984,
 749                  ov5640_setting_30fps_QCIF_176_144,
 750                  ARRAY_SIZE(ov5640_setting_30fps_QCIF_176_144)},
 751                 {OV5640_MODE_QVGA_320_240, SUBSAMPLING,
 752                  320, 1896, 240, 984,
 753                  ov5640_setting_30fps_QVGA_320_240,
 754                  ARRAY_SIZE(ov5640_setting_30fps_QVGA_320_240)},
 755                 {OV5640_MODE_VGA_640_480, SUBSAMPLING,
 756                  640, 1896, 480, 1080,
 757                  ov5640_setting_30fps_VGA_640_480,
 758                  ARRAY_SIZE(ov5640_setting_30fps_VGA_640_480)},
 759                 {OV5640_MODE_NTSC_720_480, SUBSAMPLING,
 760                  720, 1896, 480, 984,
 761                  ov5640_setting_30fps_NTSC_720_480,
 762                  ARRAY_SIZE(ov5640_setting_30fps_NTSC_720_480)},
 763                 {OV5640_MODE_PAL_720_576, SUBSAMPLING,
 764                  720, 1896, 576, 984,
 765                  ov5640_setting_30fps_PAL_720_576,
 766                  ARRAY_SIZE(ov5640_setting_30fps_PAL_720_576)},
 767                 {OV5640_MODE_XGA_1024_768, SUBSAMPLING,
 768                  1024, 1896, 768, 1080,
 769                  ov5640_setting_30fps_XGA_1024_768,
 770                  ARRAY_SIZE(ov5640_setting_30fps_XGA_1024_768)},
 771                 {OV5640_MODE_720P_1280_720, SUBSAMPLING,
 772                  1280, 1892, 720, 740,
 773                  ov5640_setting_30fps_720P_1280_720,
 774                  ARRAY_SIZE(ov5640_setting_30fps_720P_1280_720)},
 775                 {OV5640_MODE_1080P_1920_1080, SCALING,
 776                  1920, 2500, 1080, 1120,
 777                  ov5640_setting_30fps_1080P_1920_1080,
 778                  ARRAY_SIZE(ov5640_setting_30fps_1080P_1920_1080)},
 779                 {OV5640_MODE_QSXGA_2592_1944, -1, 0, 0, 0, 0, NULL, 0},
 780         },
 781 };
 782
 783 static int ov5640_init_slave_id(struct ov5640_dev *sensor)
 784 {
 785         struct i2c_client *client = sensor->i2c_client;
 786         struct i2c_msg msg;
 787         u8 buf[3];
 788         int ret;
 789
 790         if (client->addr == OV5640_DEFAULT_SLAVE_ID)
 791                 return 0;
 792
 793         buf[0] = OV5640_REG_SLAVE_ID >> 8;
 794         buf[1] = OV5640_REG_SLAVE_ID & 0xff;
 795         buf[2] = client->addr << 1;
 796
 797         msg.addr = OV5640_DEFAULT_SLAVE_ID;
 798         msg.flags = 0;
 799         msg.buf = buf;
 800         msg.len = sizeof(buf);
 801
 802         ret = i2c_transfer(client->adapter, &msg, 1);
 803         if (ret < 0) {
 804                 dev_err(&client->dev, "%s: failed with %d\n", __func__, ret);
 805                 return ret;
 806         }
 807
 808         return 0;
 809 }
 810
 811 static int ov5640_write_reg(struct ov5640_dev *sensor, u16 reg, u8 val)
 812 {
 813         struct i2c_client *client = sensor->i2c_client;
 814         struct i2c_msg msg;
 815         u8 buf[3];
 816         int ret;
 817
 818         buf[0] = reg >> 8;
 819         buf[1] = reg & 0xff;
 820         buf[2] = val;
 821
 822         msg.addr = client->addr;
 823         msg.flags = client->flags;
 824         msg.buf = buf;
 825         msg.len = sizeof(buf);
 826
 827         ret = i2c_transfer(client->adapter, &msg, 1);
 828         if (ret < 0) {
 829                 dev_err(&client->dev, "%s: error: reg=%x, val=%x\n",
 830                         __func__, reg, val);
 831                 return ret;
 832         }
 833
 834         return 0;
 835 }
 836
 837 static int ov5640_read_reg(struct ov5640_dev *sensor, u16 reg, u8 *val)
 838 {
 839         struct i2c_client *client = sensor->i2c_client;
 840         struct i2c_msg msg[2];
 841         u8 buf[2];
 842         int ret;
 843
 844         buf[0] = reg >> 8;
 845         buf[1] = reg & 0xff;
 846
 847         msg[0].addr = client->addr;
 848         msg[0].flags = client->flags;
 849         msg[0].buf = buf;
 850         msg[0].len = sizeof(buf);
 851
 852         msg[1].addr = client->addr;
 853         msg[1].flags = client->flags | I2C_M_RD;
 854         msg[1].buf = buf;
 855         msg[1].len = 1;
 856
 857         ret = i2c_transfer(client->adapter, msg, 2);
 858         if (ret < 0) {
 859                 dev_err(&client->dev, "%s: error: reg=%x\n",
 860                         __func__, reg);
 861                 return ret;
 862         }
 863
 864         *val = buf[0];
 865         return 0;
 866 }
 867
 868 static int ov5640_read_reg16(struct ov5640_dev *sensor, u16 reg, u16 *val)
 869 {
 870         u8 hi, lo;
 871         int ret;
 872
 873         ret = ov5640_read_reg(sensor, reg, &hi);
 874         if (ret)
 875                 return ret;
 876         ret = ov5640_read_reg(sensor, reg + 1, &lo);
 877         if (ret)
 878                 return ret;
 879
 880         *val = ((u16)hi << 8) | (u16)lo;
 881         return 0;
 882 }
 883
 884 static int ov5640_write_reg16(struct ov5640_dev *sensor, u16 reg, u16 val)
 885 {
 886         int ret;
 887
 888         ret = ov5640_write_reg(sensor, reg, val >> 8);
 889         if (ret)
 890                 return ret;
 891
 892         return ov5640_write_reg(sensor, reg + 1, val & 0xff);
 893 }
 894
 895 static int ov5640_mod_reg(struct ov5640_dev *sensor, u16 reg,
 896                           u8 mask, u8 val)
 897 {
 898         u8 readval;
 899         int ret;
 900
 901         ret = ov5640_read_reg(sensor, reg, &readval);
 902         if (ret)
 903                 return ret;
 904
 905         readval &= ~mask;
 906         val &= mask;
 907         val |= readval;
 908
 909         return ov5640_write_reg(sensor, reg, val);
 910 }
 911
 912 /* download ov5640 settings to sensor through i2c */
 913 static int ov5640_set_timings(struct ov5640_dev *sensor,
 914                               const struct ov5640_mode_info *mode)
 915 {
 916         int ret;
 917
 918         ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPHO, mode->hact);
 919         if (ret < 0)
 920                 return ret;
 921
 922         ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPVO, mode->vact);
 923         if (ret < 0)
 924                 return ret;
 925
 926         ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HTS, mode->htot);
 927         if (ret < 0)
 928                 return ret;
 929
 930         return ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS, mode->vtot);
 931 }
 932
 933 static int ov5640_load_regs(struct ov5640_dev *sensor,
 934                             const struct ov5640_mode_info *mode)
 935 {
 936         const struct reg_value *regs = mode->reg_data;
 937         unsigned int i;
 938         u32 delay_ms;
 939         u16 reg_addr;
 940         u8 mask, val;
 941         int ret = 0;
 942
 943         for (i = 0; i < mode->reg_data_size; ++i, ++regs) {
 944                 delay_ms = regs->delay_ms;
 945                 reg_addr = regs->reg_addr;
 946                 val = regs->val;
 947                 mask = regs->mask;
 948
 949                 if (mask)
 950                         ret = ov5640_mod_reg(sensor, reg_addr, mask, val);
 951                 else
 952                         ret = ov5640_write_reg(sensor, reg_addr, val);
 953                 if (ret)
 954                         break;
 955
 956                 if (delay_ms)
 957                         usleep_range(1000 * delay_ms, 1000 * delay_ms + 100);
 958         }
 959
 960         return ov5640_set_timings(sensor, mode);
 961 }
 962
 963 static int ov5640_set_autoexposure(struct ov5640_dev *sensor, bool on)
 964 {
 965         return ov5640_mod_reg(sensor, OV5640_REG_AEC_PK_MANUAL,
 966                               BIT(0), on ? 0 : BIT(0));
 967 }
 968
 969 /* read exposure, in number of line periods */
 970 static int ov5640_get_exposure(struct ov5640_dev *sensor)
 971 {
 972         int exp, ret;
 973         u8 temp;
 974
 975         ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_HI, &temp);
 976         if (ret)
 977                 return ret;
 978         exp = ((int)temp & 0x0f) << 16;
 979         ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_MED, &temp);
 980         if (ret)
 981                 return ret;
 982         exp |= ((int)temp << 8);
 983         ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_LO, &temp);
 984         if (ret)
 985                 return ret;
 986         exp |= (int)temp;
 987
 988         return exp >> 4;
 989 }
 990
 991 /* write exposure, given number of line periods */
 992 static int ov5640_set_exposure(struct ov5640_dev *sensor, u32 exposure)
 993 {
 994         int ret;
 995
 996         exposure <<= 4;
 997
 998         ret = ov5640_write_reg(sensor,
 999                                OV5640_REG_AEC_PK_EXPOSURE_LO,
1000                                exposure & 0xff);
1001         if (ret)
1002                 return ret;
1003         ret = ov5640_write_reg(sensor,
1004                                OV5640_REG_AEC_PK_EXPOSURE_MED,
1005                                (exposure >> 8) & 0xff);
1006         if (ret)
1007                 return ret;
1008         return ov5640_write_reg(sensor,
1009                                 OV5640_REG_AEC_PK_EXPOSURE_HI,
1010                                 (exposure >> 16) & 0x0f);
1011 }
1012
1013 static int ov5640_get_gain(struct ov5640_dev *sensor)
1014 {
1015         u16 gain;
1016         int ret;
1017
1018         ret = ov5640_read_reg16(sensor, OV5640_REG_AEC_PK_REAL_GAIN, &gain);
1019         if (ret)
1020                 return ret;
1021
1022         return gain & 0x3ff;
1023 }
1024
1025 static int ov5640_set_gain(struct ov5640_dev *sensor, int gain)
1026 {
1027         return ov5640_write_reg16(sensor, OV5640_REG_AEC_PK_REAL_GAIN,
1028                                   (u16)gain & 0x3ff);
1029 }
1030
1031 static int ov5640_set_autogain(struct ov5640_dev *sensor, bool on)
1032 {
1033         return ov5640_mod_reg(sensor, OV5640_REG_AEC_PK_MANUAL,
1034                               BIT(1), on ? 0 : BIT(1));
1035 }
1036
1037 static int ov5640_set_stream_dvp(struct ov5640_dev *sensor, bool on)
1038 {
1039         int ret;
1040         unsigned int flags = sensor->ep.bus.parallel.flags;
1041         u8 pclk_pol = 0;
1042         u8 hsync_pol = 0;
1043         u8 vsync_pol = 0;
1044
1045         /*
1046          * Note about parallel port configuration.
1047          *
1048          * When configured in parallel mode, the OV5640 will
1049          * output 10 bits data on DVP data lines [9:0].
1050          * If only 8 bits data are wanted, the 8 bits data lines
1051          * of the camera interface must be physically connected
1052          * on the DVP data lines [9:2].
1053          *
1054          * Control lines polarity can be configured through
1055          * devicetree endpoint control lines properties.
1056          * If no endpoint control lines properties are set,
1057          * polarity will be as below:
1058          * - VSYNC:     active high
1059          * - HREF:      active low
1060          * - PCLK:      active low
1061          */
1062
1063         if (on) {
1064                 /*
1065                  * reset MIPI PCLK/SERCLK divider
1066                  *
1067                  * SC PLL CONTRL1 0
1068                  * - [3..0]:    MIPI PCLK/SERCLK divider
1069                  */
1070                 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL1, 0x0f, 0);
1071                 if (ret)
1072                         return ret;
1073
1074                 /*
1075                  * configure parallel port control lines polarity
1076                  *
1077                  * POLARITY CTRL0
1078                  * - [5]:       PCLK polarity (0: active low, 1: active high)
1079                  * - [1]:       HREF polarity (0: active low, 1: active high)
1080                  * - [0]:       VSYNC polarity (mismatch here between
1081                  *              datasheet and hardware, 0 is active high
1082                  *              and 1 is active low...)
1083                  */
1084                 if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
1085                         pclk_pol = 1;
1086                 if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
1087                         hsync_pol = 1;
1088                 if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
1089                         vsync_pol = 1;
1090
1091                 ret = ov5640_write_reg(sensor,
1092                                        OV5640_REG_POLARITY_CTRL00,
1093                                        (pclk_pol << 5) |
1094                                        (hsync_pol << 1) |
1095                                        vsync_pol);
1096
1097                 if (ret)
1098                         return ret;
1099         }
1100
1101         /*
1102          * powerdown MIPI TX/RX PHY & disable MIPI
1103          *
1104          * MIPI CONTROL 00
1105          * 4:    PWDN PHY TX
1106          * 3:    PWDN PHY RX
1107          * 2:    MIPI enable
1108          */
1109         ret = ov5640_write_reg(sensor,
1110                                OV5640_REG_IO_MIPI_CTRL00, on ? 0x18 : 0);
1111         if (ret)
1112                 return ret;
1113
1114         /*
1115          * enable VSYNC/HREF/PCLK DVP control lines
1116          * & D[9:6] DVP data lines
1117          *
1118          * PAD OUTPUT ENABLE 01
1119          * - 6:         VSYNC output enable
1120          * - 5:         HREF output enable
1121          * - 4:         PCLK output enable
1122          * - [3:0]:     D[9:6] output enable
1123          */
1124         ret = ov5640_write_reg(sensor,
1125                                OV5640_REG_PAD_OUTPUT_ENABLE01,
1126                                on ? 0x7f : 0);
1127         if (ret)
1128                 return ret;
1129
1130         /*
1131          * enable D[5:0] DVP data lines
1132          *
1133          * PAD OUTPUT ENABLE 02
1134          * - [7:2]:     D[5:0] output enable
1135          */
1136         return ov5640_write_reg(sensor,
1137                                 OV5640_REG_PAD_OUTPUT_ENABLE02,
1138                                 on ? 0xfc : 0);
1139 }
1140
1141 static int ov5640_set_stream_mipi(struct ov5640_dev *sensor, bool on)
1142 {
1143         int ret;
1144
1145         /*
1146          * Enable/disable the MIPI interface
1147          *
1148          * 0x300e = on ? 0x45 : 0x40
1149          *
1150          * FIXME: the sensor manual (version 2.03) reports
1151          * [7:5] = 000  : 1 data lane mode
1152          * [7:5] = 001  : 2 data lanes mode
1153          * But this settings do not work, while the following ones
1154          * have been validated for 2 data lanes mode.
1155          *
1156          * [7:5] = 010  : 2 data lanes mode
1157          * [4] = 0      : Power up MIPI HS Tx
1158          * [3] = 0      : Power up MIPI LS Rx
1159          * [2] = 1/0    : MIPI interface enable/disable
1160          * [1:0] = 01/00: FIXME: 'debug'
1161          */
1162         ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00,
1163                                on ? 0x45 : 0x40);
1164         if (ret)
1165                 return ret;
1166
1167         return ov5640_write_reg(sensor, OV5640_REG_FRAME_CTRL01,
1168                                 on ? 0x00 : 0x0f);
1169 }
1170
1171 static int ov5640_get_sysclk(struct ov5640_dev *sensor)
1172 {
1173          /* calculate sysclk */
1174         u32 xvclk = sensor->xclk_freq / 10000;
1175         u32 multiplier, prediv, VCO, sysdiv, pll_rdiv;
1176         u32 sclk_rdiv_map[] = {1, 2, 4, 8};
1177         u32 bit_div2x = 1, sclk_rdiv, sysclk;
1178         u8 temp1, temp2;
1179         int ret;
1180
1181         ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL0, &temp1);
1182         if (ret)
1183                 return ret;
1184         temp2 = temp1 & 0x0f;
1185         if (temp2 == 8 || temp2 == 10)
1186                 bit_div2x = temp2 / 2;
1187
1188         ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL1, &temp1);
1189         if (ret)
1190                 return ret;
1191         sysdiv = temp1 >> 4;
1192         if (sysdiv == 0)
1193                 sysdiv = 16;
1194
1195         ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL2, &temp1);
1196         if (ret)
1197                 return ret;
1198         multiplier = temp1;
1199
1200         ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL3, &temp1);
1201         if (ret)
1202                 return ret;
1203         prediv = temp1 & 0x0f;
1204         pll_rdiv = ((temp1 >> 4) & 0x01) + 1;
1205
1206         ret = ov5640_read_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, &temp1);
1207         if (ret)
1208                 return ret;
1209         temp2 = temp1 & 0x03;
1210         sclk_rdiv = sclk_rdiv_map[temp2];
1211
1212         if (!prediv || !sysdiv || !pll_rdiv || !bit_div2x)
1213                 return -EINVAL;
1214
1215         VCO = xvclk * multiplier / prediv;
1216
1217         sysclk = VCO / sysdiv / pll_rdiv * 2 / bit_div2x / sclk_rdiv;
1218
1219         return sysclk;
1220 }
1221
1222 static int ov5640_set_night_mode(struct ov5640_dev *sensor)
1223 {
1224          /* read HTS from register settings */
1225         u8 mode;
1226         int ret;
1227
1228         ret = ov5640_read_reg(sensor, OV5640_REG_AEC_CTRL00, &mode);
1229         if (ret)
1230                 return ret;
1231         mode &= 0xfb;
1232         return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL00, mode);
1233 }
1234
1235 static int ov5640_get_hts(struct ov5640_dev *sensor)
1236 {
1237         /* read HTS from register settings */
1238         u16 hts;
1239         int ret;
1240
1241         ret = ov5640_read_reg16(sensor, OV5640_REG_TIMING_HTS, &hts);
1242         if (ret)
1243                 return ret;
1244         return hts;
1245 }
1246
1247 static int ov5640_get_vts(struct ov5640_dev *sensor)
1248 {
1249         u16 vts;
1250         int ret;
1251
1252         ret = ov5640_read_reg16(sensor, OV5640_REG_TIMING_VTS, &vts);
1253         if (ret)
1254                 return ret;
1255         return vts;
1256 }
1257
1258 static int ov5640_set_vts(struct ov5640_dev *sensor, int vts)
1259 {
1260         return ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS, vts);
1261 }
1262
1263 static int ov5640_get_light_freq(struct ov5640_dev *sensor)
1264 {
1265         /* get banding filter value */
1266         int ret, light_freq = 0;
1267         u8 temp, temp1;
1268
1269         ret = ov5640_read_reg(sensor, OV5640_REG_HZ5060_CTRL01, &temp);
1270         if (ret)
1271                 return ret;
1272
1273         if (temp & 0x80) {
1274                 /* manual */
1275                 ret = ov5640_read_reg(sensor, OV5640_REG_HZ5060_CTRL00,
1276                                       &temp1);
1277                 if (ret)
1278                         return ret;
1279                 if (temp1 & 0x04) {
1280                         /* 50Hz */
1281                         light_freq = 50;
1282                 } else {
1283                         /* 60Hz */
1284                         light_freq = 60;
1285                 }
1286         } else {
1287                 /* auto */
1288                 ret = ov5640_read_reg(sensor, OV5640_REG_SIGMADELTA_CTRL0C,
1289                                       &temp1);
1290                 if (ret)
1291                         return ret;
1292
1293                 if (temp1 & 0x01) {
1294                         /* 50Hz */
1295                         light_freq = 50;
1296                 } else {
1297                         /* 60Hz */
1298                 }
1299         }
1300
1301         return light_freq;
1302 }
1303
1304 static int ov5640_set_bandingfilter(struct ov5640_dev *sensor)
1305 {
1306         u32 band_step60, max_band60, band_step50, max_band50, prev_vts;
1307         int ret;
1308
1309         /* read preview PCLK */
1310         ret = ov5640_get_sysclk(sensor);
1311         if (ret < 0)
1312                 return ret;
1313         if (ret == 0)
1314                 return -EINVAL;
1315         sensor->prev_sysclk = ret;
1316         /* read preview HTS */
1317         ret = ov5640_get_hts(sensor);
1318         if (ret < 0)
1319                 return ret;
1320         if (ret == 0)
1321                 return -EINVAL;
1322         sensor->prev_hts = ret;
1323
1324         /* read preview VTS */
1325         ret = ov5640_get_vts(sensor);
1326         if (ret < 0)
1327                 return ret;
1328         prev_vts = ret;
1329
1330         /* calculate banding filter */
1331         /* 60Hz */
1332         band_step60 = sensor->prev_sysclk * 100 / sensor->prev_hts * 100 / 120;
1333         ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B60_STEP, band_step60);
1334         if (ret)
1335                 return ret;
1336         if (!band_step60)
1337                 return -EINVAL;
1338         max_band60 = (int)((prev_vts - 4) / band_step60);
1339         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0D, max_band60);
1340         if (ret)
1341                 return ret;
1342
1343         /* 50Hz */
1344         band_step50 = sensor->prev_sysclk * 100 / sensor->prev_hts;
1345         ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B50_STEP, band_step50);
1346         if (ret)
1347                 return ret;
1348         if (!band_step50)
1349                 return -EINVAL;
1350         max_band50 = (int)((prev_vts - 4) / band_step50);
1351         return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0E, max_band50);
1352 }
1353
1354 static int ov5640_set_ae_target(struct ov5640_dev *sensor, int target)
1355 {
1356         /* stable in high */
1357         u32 fast_high, fast_low;
1358         int ret;
1359
1360         sensor->ae_low = target * 23 / 25;      /* 0.92 */
1361         sensor->ae_high = target * 27 / 25;     /* 1.08 */
1362
1363         fast_high = sensor->ae_high << 1;
1364         if (fast_high > 255)
1365                 fast_high = 255;
1366
1367         fast_low = sensor->ae_low >> 1;
1368
1369         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0F, sensor->ae_high);
1370         if (ret)
1371                 return ret;
1372         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL10, sensor->ae_low);
1373         if (ret)
1374                 return ret;
1375         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1B, sensor->ae_high);
1376         if (ret)
1377                 return ret;
1378         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1E, sensor->ae_low);
1379         if (ret)
1380                 return ret;
1381         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL11, fast_high);
1382         if (ret)
1383                 return ret;
1384         return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1F, fast_low);
1385 }
1386
1387 static int ov5640_get_binning(struct ov5640_dev *sensor)
1388 {
1389         u8 temp;
1390         int ret;
1391
1392         ret = ov5640_read_reg(sensor, OV5640_REG_TIMING_TC_REG21, &temp);
1393         if (ret)
1394                 return ret;
1395
1396         return temp & BIT(0);
1397 }
1398
1399 static int ov5640_set_binning(struct ov5640_dev *sensor, bool enable)
1400 {
1401         int ret;
1402
1403         /*
1404          * TIMING TC REG21:
1405          * - [0]:       Horizontal binning enable
1406          */
1407         ret = ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
1408                              BIT(0), enable ? BIT(0) : 0);
1409         if (ret)
1410                 return ret;
1411         /*
1412          * TIMING TC REG20:
1413          * - [0]:       Undocumented, but hardcoded init sequences
1414          *              are always setting REG21/REG20 bit 0 to same value...
1415          */
1416         return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20,
1417                               BIT(0), enable ? BIT(0) : 0);
1418 }
1419
1420 static int ov5640_set_virtual_channel(struct ov5640_dev *sensor)
1421 {
1422         struct i2c_client *client = sensor->i2c_client;
1423         u8 temp, channel = virtual_channel;
1424         int ret;
1425
1426         if (channel > 3) {
1427                 dev_err(&client->dev,
1428                         "%s: wrong virtual_channel parameter, expected (0..3), got %d\n",
1429                         __func__, channel);
1430                 return -EINVAL;
1431         }
1432
1433         ret = ov5640_read_reg(sensor, OV5640_REG_DEBUG_MODE, &temp);
1434         if (ret)
1435                 return ret;
1436         temp &= ~(3 << 6);
1437         temp |= (channel << 6);
1438         return ov5640_write_reg(sensor, OV5640_REG_DEBUG_MODE, temp);
1439 }
1440
1441 static const struct ov5640_mode_info *
1442 ov5640_find_mode(struct ov5640_dev *sensor, enum ov5640_frame_rate fr,
1443                  int width, int height, bool nearest)
1444 {
1445         const struct ov5640_mode_info *mode;
1446
1447         mode = v4l2_find_nearest_size(ov5640_mode_data[fr],
1448                                       ARRAY_SIZE(ov5640_mode_data[fr]),
1449                                       hact, vact,
1450                                       width, height);
1451
1452         if (!mode ||
1453             (!nearest && (mode->hact != width || mode->vact != height)))
1454                 return NULL;
1455
1456         return mode;
1457 }
1458
1459 /*
1460  * sensor changes between scaling and subsampling, go through
1461  * exposure calculation
1462  */
1463 static int ov5640_set_mode_exposure_calc(struct ov5640_dev *sensor,
1464                                          const struct ov5640_mode_info *mode)
1465 {
1466         u32 prev_shutter, prev_gain16;
1467         u32 cap_shutter, cap_gain16;
1468         u32 cap_sysclk, cap_hts, cap_vts;
1469         u32 light_freq, cap_bandfilt, cap_maxband;
1470         u32 cap_gain16_shutter;
1471         u8 average;
1472         int ret;
1473
1474         if (!mode->reg_data)
1475                 return -EINVAL;
1476
1477         /* read preview shutter */
1478         ret = ov5640_get_exposure(sensor);
1479         if (ret < 0)
1480                 return ret;
1481         prev_shutter = ret;
1482         ret = ov5640_get_binning(sensor);
1483         if (ret < 0)
1484                 return ret;
1485         if (ret && mode->id != OV5640_MODE_720P_1280_720 &&
1486             mode->id != OV5640_MODE_1080P_1920_1080)
1487                 prev_shutter *= 2;
1488
1489         /* read preview gain */
1490         ret = ov5640_get_gain(sensor);
1491         if (ret < 0)
1492                 return ret;
1493         prev_gain16 = ret;
1494
1495         /* get average */
1496         ret = ov5640_read_reg(sensor, OV5640_REG_AVG_READOUT, &average);
1497         if (ret)
1498                 return ret;
1499
1500         /* turn off night mode for capture */
1501         ret = ov5640_set_night_mode(sensor);
1502         if (ret < 0)
1503                 return ret;
1504
1505         /* Write capture setting */
1506         ret = ov5640_load_regs(sensor, mode);
1507         if (ret < 0)
1508                 return ret;
1509
1510         /* read capture VTS */
1511         ret = ov5640_get_vts(sensor);
1512         if (ret < 0)
1513                 return ret;
1514         cap_vts = ret;
1515         ret = ov5640_get_hts(sensor);
1516         if (ret < 0)
1517                 return ret;
1518         if (ret == 0)
1519                 return -EINVAL;
1520         cap_hts = ret;
1521
1522         ret = ov5640_get_sysclk(sensor);
1523         if (ret < 0)
1524                 return ret;
1525         if (ret == 0)
1526                 return -EINVAL;
1527         cap_sysclk = ret;
1528
1529         /* calculate capture banding filter */
1530         ret = ov5640_get_light_freq(sensor);
1531         if (ret < 0)
1532                 return ret;
1533         light_freq = ret;
1534
1535         if (light_freq == 60) {
1536                 /* 60Hz */
1537                 cap_bandfilt = cap_sysclk * 100 / cap_hts * 100 / 120;
1538         } else {
1539                 /* 50Hz */
1540                 cap_bandfilt = cap_sysclk * 100 / cap_hts;
1541         }
1542
1543         if (!sensor->prev_sysclk) {
1544                 ret = ov5640_get_sysclk(sensor);
1545                 if (ret < 0)
1546                         return ret;
1547                 if (ret == 0)
1548                         return -EINVAL;
1549                 sensor->prev_sysclk = ret;
1550         }
1551
1552         if (!cap_bandfilt)
1553                 return -EINVAL;
1554
1555         cap_maxband = (int)((cap_vts - 4) / cap_bandfilt);
1556
1557         /* calculate capture shutter/gain16 */
1558         if (average > sensor->ae_low && average < sensor->ae_high) {
1559                 /* in stable range */
1560                 cap_gain16_shutter =
1561                         prev_gain16 * prev_shutter *
1562                         cap_sysclk / sensor->prev_sysclk *
1563                         sensor->prev_hts / cap_hts *
1564                         sensor->ae_target / average;
1565         } else {
1566                 cap_gain16_shutter =
1567                         prev_gain16 * prev_shutter *
1568                         cap_sysclk / sensor->prev_sysclk *
1569                         sensor->prev_hts / cap_hts;
1570         }
1571
1572         /* gain to shutter */
1573         if (cap_gain16_shutter < (cap_bandfilt * 16)) {
1574                 /* shutter < 1/100 */
1575                 cap_shutter = cap_gain16_shutter / 16;
1576                 if (cap_shutter < 1)
1577                         cap_shutter = 1;
1578
1579                 cap_gain16 = cap_gain16_shutter / cap_shutter;
1580                 if (cap_gain16 < 16)
1581                         cap_gain16 = 16;
1582         } else {
1583                 if (cap_gain16_shutter > (cap_bandfilt * cap_maxband * 16)) {
1584                         /* exposure reach max */
1585                         cap_shutter = cap_bandfilt * cap_maxband;
1586                         if (!cap_shutter)
1587                                 return -EINVAL;
1588
1589                         cap_gain16 = cap_gain16_shutter / cap_shutter;
1590                 } else {
1591                         /* 1/100 < (cap_shutter = n/100) =< max */
1592                         cap_shutter =
1593                                 ((int)(cap_gain16_shutter / 16 / cap_bandfilt))
1594                                 * cap_bandfilt;
1595                         if (!cap_shutter)
1596                                 return -EINVAL;
1597
1598                         cap_gain16 = cap_gain16_shutter / cap_shutter;
1599                 }
1600         }
1601
1602         /* set capture gain */
1603         ret = ov5640_set_gain(sensor, cap_gain16);
1604         if (ret)
1605                 return ret;
1606
1607         /* write capture shutter */
1608         if (cap_shutter > (cap_vts - 4)) {
1609                 cap_vts = cap_shutter + 4;
1610                 ret = ov5640_set_vts(sensor, cap_vts);
1611                 if (ret < 0)
1612                         return ret;
1613         }
1614
1615         /* set exposure */
1616         return ov5640_set_exposure(sensor, cap_shutter);
1617 }
1618
1619 /*
1620  * if sensor changes inside scaling or subsampling
1621  * change mode directly
1622  */
1623 static int ov5640_set_mode_direct(struct ov5640_dev *sensor,
1624                                   const struct ov5640_mode_info *mode)
1625 {
1626         if (!mode->reg_data)
1627                 return -EINVAL;
1628
1629         /* Write capture setting */
1630         return ov5640_load_regs(sensor, mode);
1631 }
1632
1633 static int ov5640_set_mode(struct ov5640_dev *sensor)
1634 {
1635         const struct ov5640_mode_info *mode = sensor->current_mode;
1636         const struct ov5640_mode_info *orig_mode = sensor->last_mode;
1637         enum ov5640_downsize_mode dn_mode, orig_dn_mode;
1638         bool auto_gain = sensor->ctrls.auto_gain->val == 1;
1639         bool auto_exp =  sensor->ctrls.auto_exp->val == V4L2_EXPOSURE_AUTO;
1640         int ret;
1641
1642         dn_mode = mode->dn_mode;
1643         orig_dn_mode = orig_mode->dn_mode;
1644
1645         /* auto gain and exposure must be turned off when changing modes */
1646         if (auto_gain) {
1647                 ret = ov5640_set_autogain(sensor, false);
1648                 if (ret)
1649                         return ret;
1650         }
1651
1652         if (auto_exp) {
1653                 ret = ov5640_set_autoexposure(sensor, false);
1654                 if (ret)
1655                         goto restore_auto_gain;
1656         }
1657
1658         if ((dn_mode == SUBSAMPLING && orig_dn_mode == SCALING) ||
1659             (dn_mode == SCALING && orig_dn_mode == SUBSAMPLING)) {
1660                 /*
1661                  * change between subsampling and scaling
1662                  * go through exposure calculation
1663                  */
1664                 ret = ov5640_set_mode_exposure_calc(sensor, mode);
1665         } else {
1666                 /*
1667                  * change inside subsampling or scaling
1668                  * download firmware directly
1669                  */
1670                 ret = ov5640_set_mode_direct(sensor, mode);
1671         }
1672         if (ret < 0)
1673                 goto restore_auto_exp_gain;
1674
1675         /* restore auto gain and exposure */
1676         if (auto_gain)
1677                 ov5640_set_autogain(sensor, true);
1678         if (auto_exp)
1679                 ov5640_set_autoexposure(sensor, true);
1680
1681         ret = ov5640_set_binning(sensor, dn_mode != SCALING);
1682         if (ret < 0)
1683                 return ret;
1684         ret = ov5640_set_ae_target(sensor, sensor->ae_target);
1685         if (ret < 0)
1686                 return ret;
1687         ret = ov5640_get_light_freq(sensor);
1688         if (ret < 0)
1689                 return ret;
1690         ret = ov5640_set_bandingfilter(sensor);
1691         if (ret < 0)
1692                 return ret;
1693         ret = ov5640_set_virtual_channel(sensor);
1694         if (ret < 0)
1695                 return ret;
1696
1697         sensor->pending_mode_change = false;
1698         sensor->last_mode = mode;
1699
1700         return 0;
1701
1702 restore_auto_exp_gain:
1703         if (auto_exp)
1704                 ov5640_set_autoexposure(sensor, true);
1705 restore_auto_gain:
1706         if (auto_gain)
1707                 ov5640_set_autogain(sensor, true);
1708
1709         return ret;
1710 }
1711
1712 static int ov5640_set_framefmt(struct ov5640_dev *sensor,
1713                                struct v4l2_mbus_framefmt *format);
1714
1715 /* restore the last set video mode after chip power-on */
1716 static int ov5640_restore_mode(struct ov5640_dev *sensor)
1717 {
1718         int ret;
1719
1720         /* first load the initial register values */
1721         ret = ov5640_load_regs(sensor, &ov5640_mode_init_data);
1722         if (ret < 0)
1723                 return ret;
1724         sensor->last_mode = &ov5640_mode_init_data;
1725
1726         ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x3f,
1727                              (ilog2(OV5640_SCLK2X_ROOT_DIVIDER_DEFAULT) << 2) |
1728                              ilog2(OV5640_SCLK_ROOT_DIVIDER_DEFAULT));
1729         if (ret)
1730                 return ret;
1731
1732         /* now restore the last capture mode */
1733         ret = ov5640_set_mode(sensor);
1734         if (ret < 0)
1735                 return ret;
1736
1737         return ov5640_set_framefmt(sensor, &sensor->fmt);
1738 }
1739
1740 static void ov5640_power(struct ov5640_dev *sensor, bool enable)
1741 {
1742         gpiod_set_value_cansleep(sensor->pwdn_gpio, enable ? 0 : 1);
1743 }
1744
1745 static void ov5640_reset(struct ov5640_dev *sensor)
1746 {
1747         if (!sensor->reset_gpio)
1748                 return;
1749
1750         gpiod_set_value_cansleep(sensor->reset_gpio, 0);
1751
1752         /* camera power cycle */
1753         ov5640_power(sensor, false);
1754         usleep_range(5000, 10000);
1755         ov5640_power(sensor, true);
1756         usleep_range(5000, 10000);
1757
1758         gpiod_set_value_cansleep(sensor->reset_gpio, 1);
1759         usleep_range(1000, 2000);
1760
1761         gpiod_set_value_cansleep(sensor->reset_gpio, 0);
1762         usleep_range(20000, 25000);
1763 }
1764
1765 static int ov5640_set_power_on(struct ov5640_dev *sensor)
1766 {
1767         struct i2c_client *client = sensor->i2c_client;
1768         int ret;
1769
1770         ret = clk_prepare_enable(sensor->xclk);
1771         if (ret) {
1772                 dev_err(&client->dev, "%s: failed to enable clock\n",
1773                         __func__);
1774                 return ret;
1775         }
1776
1777         ret = regulator_bulk_enable(OV5640_NUM_SUPPLIES,
1778                                     sensor->supplies);
1779         if (ret) {
1780                 dev_err(&client->dev, "%s: failed to enable regulators\n",
1781                         __func__);
1782                 goto xclk_off;
1783         }
1784
1785         ov5640_reset(sensor);
1786         ov5640_power(sensor, true);
1787
1788         ret = ov5640_init_slave_id(sensor);
1789         if (ret)
1790                 goto power_off;
1791
1792         return 0;
1793
1794 power_off:
1795         ov5640_power(sensor, false);
1796         regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies);
1797 xclk_off:
1798         clk_disable_unprepare(sensor->xclk);
1799         return ret;
1800 }
1801
1802 static void ov5640_set_power_off(struct ov5640_dev *sensor)
1803 {
1804         ov5640_power(sensor, false);
1805         regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies);
1806         clk_disable_unprepare(sensor->xclk);
1807 }
1808
1809 static int ov5640_set_power(struct ov5640_dev *sensor, bool on)
1810 {
1811         int ret = 0;
1812
1813         if (on) {
1814                 ret = ov5640_set_power_on(sensor);
1815                 if (ret)
1816                         return ret;
1817
1818                 ret = ov5640_restore_mode(sensor);
1819                 if (ret)
1820                         goto power_off;
1821
1822                 /* We're done here for DVP bus, while CSI-2 needs setup. */
1823                 if (sensor->ep.bus_type != V4L2_MBUS_CSI2)
1824                         return 0;
1825
1826                 /*
1827                  * Power up MIPI HS Tx and LS Rx; 2 data lanes mode
1828                  *
1829                  * 0x300e = 0x40
1830                  * [7:5] = 010  : 2 data lanes mode (see FIXME note in
1831                  *                "ov5640_set_stream_mipi()")
1832                  * [4] = 0      : Power up MIPI HS Tx
1833                  * [3] = 0      : Power up MIPI LS Rx
1834                  * [2] = 0      : MIPI interface disabled
1835                  */
1836                 ret = ov5640_write_reg(sensor,
1837                                        OV5640_REG_IO_MIPI_CTRL00, 0x40);
1838                 if (ret)
1839                         goto power_off;
1840
1841                 /*
1842                  * Gate clock and set LP11 in 'no packets mode' (idle)
1843                  *
1844                  * 0x4800 = 0x24
1845                  * [5] = 1      : Gate clock when 'no packets'
1846                  * [2] = 1      : MIPI bus in LP11 when 'no packets'
1847                  */
1848                 ret = ov5640_write_reg(sensor,
1849                                        OV5640_REG_MIPI_CTRL00, 0x24);
1850                 if (ret)
1851                         goto power_off;
1852
1853                 /*
1854                  * Set data lanes and clock in LP11 when 'sleeping'
1855                  *
1856                  * 0x3019 = 0x70
1857                  * [6] = 1      : MIPI data lane 2 in LP11 when 'sleeping'
1858                  * [5] = 1      : MIPI data lane 1 in LP11 when 'sleeping'
1859                  * [4] = 1      : MIPI clock lane in LP11 when 'sleeping'
1860                  */
1861                 ret = ov5640_write_reg(sensor,
1862                                        OV5640_REG_PAD_OUTPUT00, 0x70);
1863                 if (ret)
1864                         goto power_off;
1865
1866                 /* Give lanes some time to coax into LP11 state. */
1867                 usleep_range(500, 1000);
1868
1869         } else {
1870                 if (sensor->ep.bus_type == V4L2_MBUS_CSI2) {
1871                         /* Reset MIPI bus settings to their default values. */
1872                         ov5640_write_reg(sensor,
1873                                          OV5640_REG_IO_MIPI_CTRL00, 0x58);
1874                         ov5640_write_reg(sensor,
1875                                          OV5640_REG_MIPI_CTRL00, 0x04);
1876                         ov5640_write_reg(sensor,
1877                                          OV5640_REG_PAD_OUTPUT00, 0x00);
1878                 }
1879
1880                 ov5640_set_power_off(sensor);
1881         }
1882
1883         return 0;
1884
1885 power_off:
1886         ov5640_set_power_off(sensor);
1887         return ret;
1888 }
1889
1890 /* --------------- Subdev Operations --------------- */
1891
1892 static int ov5640_s_power(struct v4l2_subdev *sd, int on)
1893 {
1894         struct ov5640_dev *sensor = to_ov5640_dev(sd);
1895         int ret = 0;
1896
1897         mutex_lock(&sensor->lock);
1898
1899         /*
1900          * If the power count is modified from 0 to != 0 or from != 0 to 0,
1901          * update the power state.
1902          */
1903         if (sensor->power_count == !on) {
1904                 ret = ov5640_set_power(sensor, !!on);
1905                 if (ret)
1906                         goto out;
1907         }
1908
1909         /* Update the power count. */
1910         sensor->power_count += on ? 1 : -1;
1911         WARN_ON(sensor->power_count < 0);
1912 out:
1913         mutex_unlock(&sensor->lock);
1914
1915         if (on && !ret && sensor->power_count == 1) {
1916                 /* restore controls */
1917                 ret = v4l2_ctrl_handler_setup(&sensor->ctrls.handler);
1918         }
1919
1920         return ret;
1921 }
1922
1923 static int ov5640_try_frame_interval(struct ov5640_dev *sensor,
1924                                      struct v4l2_fract *fi,
1925                                      u32 width, u32 height)
1926 {
1927         const struct ov5640_mode_info *mode;
1928         u32 minfps, maxfps, fps;
1929         int ret;
1930
1931         minfps = ov5640_framerates[OV5640_15_FPS];
1932         maxfps = ov5640_framerates[OV5640_30_FPS];
1933
1934         if (fi->numerator == 0) {
1935                 fi->denominator = maxfps;
1936                 fi->numerator = 1;
1937                 return OV5640_30_FPS;
1938         }
1939
1940         fps = DIV_ROUND_CLOSEST(fi->denominator, fi->numerator);
1941
1942         fi->numerator = 1;
1943         if (fps > maxfps)
1944                 fi->denominator = maxfps;
1945         else if (fps < minfps)
1946                 fi->denominator = minfps;
1947         else if (2 * fps >= 2 * minfps + (maxfps - minfps))
1948                 fi->denominator = maxfps;
1949         else
1950                 fi->denominator = minfps;
1951
1952         ret = (fi->denominator == minfps) ? OV5640_15_FPS : OV5640_30_FPS;
1953
1954         mode = ov5640_find_mode(sensor, ret, width, height, false);
1955         return mode ? ret : -EINVAL;
1956 }
1957
1958 static int ov5640_get_fmt(struct v4l2_subdev *sd,
1959                           struct v4l2_subdev_pad_config *cfg,
1960                           struct v4l2_subdev_format *format)
1961 {
1962         struct ov5640_dev *sensor = to_ov5640_dev(sd);
1963         struct v4l2_mbus_framefmt *fmt;
1964
1965         if (format->pad != 0)
1966                 return -EINVAL;
1967
1968         mutex_lock(&sensor->lock);
1969
1970         if (format->which == V4L2_SUBDEV_FORMAT_TRY)
1971                 fmt = v4l2_subdev_get_try_format(&sensor->sd, cfg,
1972                                                  format->pad);
1973         else
1974                 fmt = &sensor->fmt;
1975
1976         format->format = *fmt;
1977
1978         mutex_unlock(&sensor->lock);
1979
1980         return 0;
1981 }
1982
1983 static int ov5640_try_fmt_internal(struct v4l2_subdev *sd,
1984                                    struct v4l2_mbus_framefmt *fmt,
1985                                    enum ov5640_frame_rate fr,
1986                                    const struct ov5640_mode_info **new_mode)
1987 {
1988         struct ov5640_dev *sensor = to_ov5640_dev(sd);
1989         const struct ov5640_mode_info *mode;
1990         int i;
1991
1992         mode = ov5640_find_mode(sensor, fr, fmt->width, fmt->height, true);
1993         if (!mode)
1994                 return -EINVAL;
1995         fmt->width = mode->hact;
1996         fmt->height = mode->vact;
1997
1998         if (new_mode)
1999                 *new_mode = mode;
2000
2001         for (i = 0; i < ARRAY_SIZE(ov5640_formats); i++)
2002                 if (ov5640_formats[i].code == fmt->code)
2003                         break;
2004         if (i >= ARRAY_SIZE(ov5640_formats))
2005                 i = 0;
2006
2007         fmt->code = ov5640_formats[i].code;
2008         fmt->colorspace = ov5640_formats[i].colorspace;
2009         fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
2010         fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
2011         fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
2012
2013         return 0;
2014 }
2015
2016 static int ov5640_set_fmt(struct v4l2_subdev *sd,
2017                           struct v4l2_subdev_pad_config *cfg,
2018                           struct v4l2_subdev_format *format)
2019 {
2020         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2021         const struct ov5640_mode_info *new_mode;
2022         struct v4l2_mbus_framefmt *mbus_fmt = &format->format;
2023         struct v4l2_mbus_framefmt *fmt;
2024         int ret;
2025
2026         if (format->pad != 0)
2027                 return -EINVAL;
2028
2029         mutex_lock(&sensor->lock);
2030
2031         if (sensor->streaming) {
2032                 ret = -EBUSY;
2033                 goto out;
2034         }
2035
2036         ret = ov5640_try_fmt_internal(sd, mbus_fmt,
2037                                       sensor->current_fr, &new_mode);
2038         if (ret)
2039                 goto out;
2040
2041         if (format->which == V4L2_SUBDEV_FORMAT_TRY)
2042                 fmt = v4l2_subdev_get_try_format(sd, cfg, 0);
2043         else
2044                 fmt = &sensor->fmt;
2045
2046         *fmt = *mbus_fmt;
2047
2048         if (new_mode != sensor->current_mode) {
2049                 sensor->current_mode = new_mode;
2050                 sensor->pending_mode_change = true;
2051         }
2052         if (mbus_fmt->code != sensor->fmt.code)
2053                 sensor->pending_fmt_change = true;
2054
2055 out:
2056         mutex_unlock(&sensor->lock);
2057         return ret;
2058 }
2059
2060 static int ov5640_set_framefmt(struct ov5640_dev *sensor,
2061                                struct v4l2_mbus_framefmt *format)
2062 {
2063         int ret = 0;
2064         bool is_rgb = false;
2065         bool is_jpeg = false;
2066         u8 val;
2067
2068         switch (format->code) {
2069         case MEDIA_BUS_FMT_UYVY8_2X8:
2070                 /* YUV422, UYVY */
2071                 val = 0x3f;
2072                 break;
2073         case MEDIA_BUS_FMT_YUYV8_2X8:
2074                 /* YUV422, YUYV */
2075                 val = 0x30;
2076                 break;
2077         case MEDIA_BUS_FMT_RGB565_2X8_LE:
2078                 /* RGB565 {g[2:0],b[4:0]},{r[4:0],g[5:3]} */
2079                 val = 0x6F;
2080                 is_rgb = true;
2081                 break;
2082         case MEDIA_BUS_FMT_RGB565_2X8_BE:
2083                 /* RGB565 {r[4:0],g[5:3]},{g[2:0],b[4:0]} */
2084                 val = 0x61;
2085                 is_rgb = true;
2086                 break;
2087         case MEDIA_BUS_FMT_JPEG_1X8:
2088                 /* YUV422, YUYV */
2089                 val = 0x30;
2090                 is_jpeg = true;
2091                 break;
2092         default:
2093                 return -EINVAL;
2094         }
2095
2096         /* FORMAT CONTROL00: YUV and RGB formatting */
2097         ret = ov5640_write_reg(sensor, OV5640_REG_FORMAT_CONTROL00, val);
2098         if (ret)
2099                 return ret;
2100
2101         /* FORMAT MUX CONTROL: ISP YUV or RGB */
2102         ret = ov5640_write_reg(sensor, OV5640_REG_ISP_FORMAT_MUX_CTRL,
2103                                is_rgb ? 0x01 : 0x00);
2104         if (ret)
2105                 return ret;
2106
2107         /*
2108          * TIMING TC REG21:
2109          * - [5]:       JPEG enable
2110          */
2111         ret = ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
2112                              BIT(5), is_jpeg ? BIT(5) : 0);
2113         if (ret)
2114                 return ret;
2115
2116         /*
2117          * SYSTEM RESET02:
2118          * - [4]:       Reset JFIFO
2119          * - [3]:       Reset SFIFO
2120          * - [2]:       Reset JPEG
2121          */
2122         ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_RESET02,
2123                              BIT(4) | BIT(3) | BIT(2),
2124                              is_jpeg ? 0 : (BIT(4) | BIT(3) | BIT(2)));
2125         if (ret)
2126                 return ret;
2127
2128         /*
2129          * CLOCK ENABLE02:
2130          * - [5]:       Enable JPEG 2x clock
2131          * - [3]:       Enable JPEG clock
2132          */
2133         return ov5640_mod_reg(sensor, OV5640_REG_SYS_CLOCK_ENABLE02,
2134                               BIT(5) | BIT(3),
2135                               is_jpeg ? (BIT(5) | BIT(3)) : 0);
2136 }
2137
2138 /*
2139  * Sensor Controls.
2140  */
2141
2142 static int ov5640_set_ctrl_hue(struct ov5640_dev *sensor, int value)
2143 {
2144         int ret;
2145
2146         if (value) {
2147                 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
2148                                      BIT(0), BIT(0));
2149                 if (ret)
2150                         return ret;
2151                 ret = ov5640_write_reg16(sensor, OV5640_REG_SDE_CTRL1, value);
2152         } else {
2153                 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(0), 0);
2154         }
2155
2156         return ret;
2157 }
2158
2159 static int ov5640_set_ctrl_contrast(struct ov5640_dev *sensor, int value)
2160 {
2161         int ret;
2162
2163         if (value) {
2164                 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
2165                                      BIT(2), BIT(2));
2166                 if (ret)
2167                         return ret;
2168                 ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL5,
2169                                        value & 0xff);
2170         } else {
2171                 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(2), 0);
2172         }
2173
2174         return ret;
2175 }
2176
2177 static int ov5640_set_ctrl_saturation(struct ov5640_dev *sensor, int value)
2178 {
2179         int ret;
2180
2181         if (value) {
2182                 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
2183                                      BIT(1), BIT(1));
2184                 if (ret)
2185                         return ret;
2186                 ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL3,
2187                                        value & 0xff);
2188                 if (ret)
2189                         return ret;
2190                 ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL4,
2191                                        value & 0xff);
2192         } else {
2193                 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(1), 0);
2194         }
2195
2196         return ret;
2197 }
2198
2199 static int ov5640_set_ctrl_white_balance(struct ov5640_dev *sensor, int awb)
2200 {
2201         int ret;
2202
2203         ret = ov5640_mod_reg(sensor, OV5640_REG_AWB_MANUAL_CTRL,
2204                              BIT(0), awb ? 0 : 1);
2205         if (ret)
2206                 return ret;
2207
2208         if (!awb) {
2209                 u16 red = (u16)sensor->ctrls.red_balance->val;
2210                 u16 blue = (u16)sensor->ctrls.blue_balance->val;
2211
2212                 ret = ov5640_write_reg16(sensor, OV5640_REG_AWB_R_GAIN, red);
2213                 if (ret)
2214                         return ret;
2215                 ret = ov5640_write_reg16(sensor, OV5640_REG_AWB_B_GAIN, blue);
2216         }
2217
2218         return ret;
2219 }
2220
2221 static int ov5640_set_ctrl_exposure(struct ov5640_dev *sensor,
2222                                     enum v4l2_exposure_auto_type auto_exposure)
2223 {
2224         struct ov5640_ctrls *ctrls = &sensor->ctrls;
2225         bool auto_exp = (auto_exposure == V4L2_EXPOSURE_AUTO);
2226         int ret = 0;
2227
2228         if (ctrls->auto_exp->is_new) {
2229                 ret = ov5640_set_autoexposure(sensor, auto_exp);
2230                 if (ret)
2231                         return ret;
2232         }
2233
2234         if (!auto_exp && ctrls->exposure->is_new) {
2235                 u16 max_exp;
2236
2237                 ret = ov5640_read_reg16(sensor, OV5640_REG_AEC_PK_VTS,
2238                                         &max_exp);
2239                 if (ret)
2240                         return ret;
2241                 ret = ov5640_get_vts(sensor);
2242                 if (ret < 0)
2243                         return ret;
2244                 max_exp += ret;
2245                 ret = 0;
2246
2247                 if (ctrls->exposure->val < max_exp)
2248                         ret = ov5640_set_exposure(sensor, ctrls->exposure->val);
2249         }
2250
2251         return ret;
2252 }
2253
2254 static int ov5640_set_ctrl_gain(struct ov5640_dev *sensor, bool auto_gain)
2255 {
2256         struct ov5640_ctrls *ctrls = &sensor->ctrls;
2257         int ret = 0;
2258
2259         if (ctrls->auto_gain->is_new) {
2260                 ret = ov5640_set_autogain(sensor, auto_gain);
2261                 if (ret)
2262                         return ret;
2263         }
2264
2265         if (!auto_gain && ctrls->gain->is_new)
2266                 ret = ov5640_set_gain(sensor, ctrls->gain->val);
2267
2268         return ret;
2269 }
2270
2271 static int ov5640_set_ctrl_test_pattern(struct ov5640_dev *sensor, int value)
2272 {
2273         return ov5640_mod_reg(sensor, OV5640_REG_PRE_ISP_TEST_SET1,
2274                               0xa4, value ? 0xa4 : 0);
2275 }
2276
2277 static int ov5640_set_ctrl_light_freq(struct ov5640_dev *sensor, int value)
2278 {
2279         int ret;
2280
2281         ret = ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL01, BIT(7),
2282                              (value == V4L2_CID_POWER_LINE_FREQUENCY_AUTO) ?
2283                              0 : BIT(7));
2284         if (ret)
2285                 return ret;
2286
2287         return ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL00, BIT(2),
2288                               (value == V4L2_CID_POWER_LINE_FREQUENCY_50HZ) ?
2289                               BIT(2) : 0);
2290 }
2291
2292 static int ov5640_set_ctrl_hflip(struct ov5640_dev *sensor, int value)
2293 {
2294         /*
2295          * If sensor is mounted upside down, mirror logic is inversed.
2296          *
2297          * Sensor is a BSI (Back Side Illuminated) one,
2298          * so image captured is physically mirrored.
2299          * This is why mirror logic is inversed in
2300          * order to cancel this mirror effect.
2301          */
2302
2303         /*
2304          * TIMING TC REG21:
2305          * - [2]:       ISP mirror
2306          * - [1]:       Sensor mirror
2307          */
2308         return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
2309                               BIT(2) | BIT(1),
2310                               (!(value ^ sensor->upside_down)) ?
2311                               (BIT(2) | BIT(1)) : 0);
2312 }
2313
2314 static int ov5640_set_ctrl_vflip(struct ov5640_dev *sensor, int value)
2315 {
2316         /* If sensor is mounted upside down, flip logic is inversed */
2317
2318         /*
2319          * TIMING TC REG20:
2320          * - [2]:       ISP vflip
2321          * - [1]:       Sensor vflip
2322          */
2323         return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20,
2324                               BIT(2) | BIT(1),
2325                               (value ^ sensor->upside_down) ?
2326                               (BIT(2) | BIT(1)) : 0);
2327 }
2328
2329 static int ov5640_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
2330 {
2331         struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
2332         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2333         int val;
2334
2335         /* v4l2_ctrl_lock() locks our own mutex */
2336
2337         switch (ctrl->id) {
2338         case V4L2_CID_AUTOGAIN:
2339                 val = ov5640_get_gain(sensor);
2340                 if (val < 0)
2341                         return val;
2342                 sensor->ctrls.gain->val = val;
2343                 break;
2344         case V4L2_CID_EXPOSURE_AUTO:
2345                 val = ov5640_get_exposure(sensor);
2346                 if (val < 0)
2347                         return val;
2348                 sensor->ctrls.exposure->val = val;
2349                 break;
2350         }
2351
2352         return 0;
2353 }
2354
2355 static int ov5640_s_ctrl(struct v4l2_ctrl *ctrl)
2356 {
2357         struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
2358         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2359         int ret;
2360
2361         /* v4l2_ctrl_lock() locks our own mutex */
2362
2363         /*
2364          * If the device is not powered up by the host driver do
2365          * not apply any controls to H/W at this time. Instead
2366          * the controls will be restored right after power-up.
2367          */
2368         if (sensor->power_count == 0)
2369                 return 0;
2370
2371         switch (ctrl->id) {
2372         case V4L2_CID_AUTOGAIN:
2373                 ret = ov5640_set_ctrl_gain(sensor, ctrl->val);
2374                 break;
2375         case V4L2_CID_EXPOSURE_AUTO:
2376                 ret = ov5640_set_ctrl_exposure(sensor, ctrl->val);
2377                 break;
2378         case V4L2_CID_AUTO_WHITE_BALANCE:
2379                 ret = ov5640_set_ctrl_white_balance(sensor, ctrl->val);
2380                 break;
2381         case V4L2_CID_HUE:
2382                 ret = ov5640_set_ctrl_hue(sensor, ctrl->val);
2383                 break;
2384         case V4L2_CID_CONTRAST:
2385                 ret = ov5640_set_ctrl_contrast(sensor, ctrl->val);
2386                 break;
2387         case V4L2_CID_SATURATION:
2388                 ret = ov5640_set_ctrl_saturation(sensor, ctrl->val);
2389                 break;
2390         case V4L2_CID_TEST_PATTERN:
2391                 ret = ov5640_set_ctrl_test_pattern(sensor, ctrl->val);
2392                 break;
2393         case V4L2_CID_POWER_LINE_FREQUENCY:
2394                 ret = ov5640_set_ctrl_light_freq(sensor, ctrl->val);
2395                 break;
2396         case V4L2_CID_HFLIP:
2397                 ret = ov5640_set_ctrl_hflip(sensor, ctrl->val);
2398                 break;
2399         case V4L2_CID_VFLIP:
2400                 ret = ov5640_set_ctrl_vflip(sensor, ctrl->val);
2401                 break;
2402         default:
2403                 ret = -EINVAL;
2404                 break;
2405         }
2406
2407         return ret;
2408 }
2409
2410 static const struct v4l2_ctrl_ops ov5640_ctrl_ops = {
2411         .g_volatile_ctrl = ov5640_g_volatile_ctrl,
2412         .s_ctrl = ov5640_s_ctrl,
2413 };
2414
2415 static const char * const test_pattern_menu[] = {
2416         "Disabled",
2417         "Color bars",
2418 };
2419
2420 static int ov5640_init_controls(struct ov5640_dev *sensor)
2421 {
2422         const struct v4l2_ctrl_ops *ops = &ov5640_ctrl_ops;
2423         struct ov5640_ctrls *ctrls = &sensor->ctrls;
2424         struct v4l2_ctrl_handler *hdl = &ctrls->handler;
2425         int ret;
2426
2427         v4l2_ctrl_handler_init(hdl, 32);
2428
2429         /* we can use our own mutex for the ctrl lock */
2430         hdl->lock = &sensor->lock;
2431
2432         /* Auto/manual white balance */
2433         ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops,
2434                                            V4L2_CID_AUTO_WHITE_BALANCE,
2435                                            0, 1, 1, 1);
2436         ctrls->blue_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BLUE_BALANCE,
2437                                                 0, 4095, 1, 0);
2438         ctrls->red_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_RED_BALANCE,
2439                                                0, 4095, 1, 0);
2440         /* Auto/manual exposure */
2441         ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops,
2442                                                  V4L2_CID_EXPOSURE_AUTO,
2443                                                  V4L2_EXPOSURE_MANUAL, 0,
2444                                                  V4L2_EXPOSURE_AUTO);
2445         ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
2446                                             0, 65535, 1, 0);
2447         /* Auto/manual gain */
2448         ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTOGAIN,
2449                                              0, 1, 1, 1);
2450         ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN,
2451                                         0, 1023, 1, 0);
2452
2453         ctrls->saturation = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION,
2454                                               0, 255, 1, 64);
2455         ctrls->hue = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HUE,
2456                                        0, 359, 1, 0);
2457         ctrls->contrast = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST,
2458                                             0, 255, 1, 0);
2459         ctrls->test_pattern =
2460                 v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
2461                                              ARRAY_SIZE(test_pattern_menu) - 1,
2462                                              0, 0, test_pattern_menu);
2463         ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP,
2464                                          0, 1, 1, 0);
2465         ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP,
2466                                          0, 1, 1, 0);
2467
2468         ctrls->light_freq =
2469                 v4l2_ctrl_new_std_menu(hdl, ops,
2470                                        V4L2_CID_POWER_LINE_FREQUENCY,
2471                                        V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
2472                                        V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
2473
2474         if (hdl->error) {
2475                 ret = hdl->error;
2476                 goto free_ctrls;
2477         }
2478
2479         ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
2480         ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
2481
2482         v4l2_ctrl_auto_cluster(3, &ctrls->auto_wb, 0, false);
2483         v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true);
2484         v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp, 1, true);
2485
2486         sensor->sd.ctrl_handler = hdl;
2487         return 0;
2488
2489 free_ctrls:
2490         v4l2_ctrl_handler_free(hdl);
2491         return ret;
2492 }
2493
2494 static int ov5640_enum_frame_size(struct v4l2_subdev *sd,
2495                                   struct v4l2_subdev_pad_config *cfg,
2496                                   struct v4l2_subdev_frame_size_enum *fse)
2497 {
2498         if (fse->pad != 0)
2499                 return -EINVAL;
2500         if (fse->index >= OV5640_NUM_MODES)
2501                 return -EINVAL;
2502
2503         fse->min_width =
2504                 ov5640_mode_data[0][fse->index].hact;
2505         fse->max_width = fse->min_width;
2506         fse->min_height =
2507                 ov5640_mode_data[0][fse->index].vact;
2508         fse->max_height = fse->min_height;
2509
2510         return 0;
2511 }
2512
2513 static int ov5640_enum_frame_interval(
2514         struct v4l2_subdev *sd,
2515         struct v4l2_subdev_pad_config *cfg,
2516         struct v4l2_subdev_frame_interval_enum *fie)
2517 {
2518         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2519         struct v4l2_fract tpf;
2520         int ret;
2521
2522         if (fie->pad != 0)
2523                 return -EINVAL;
2524         if (fie->index >= OV5640_NUM_FRAMERATES)
2525                 return -EINVAL;
2526
2527         tpf.numerator = 1;
2528         tpf.denominator = ov5640_framerates[fie->index];
2529
2530         ret = ov5640_try_frame_interval(sensor, &tpf,
2531                                         fie->width, fie->height);
2532         if (ret < 0)
2533                 return -EINVAL;
2534
2535         fie->interval = tpf;
2536         return 0;
2537 }
2538
2539 static int ov5640_g_frame_interval(struct v4l2_subdev *sd,
2540                                    struct v4l2_subdev_frame_interval *fi)
2541 {
2542         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2543
2544         mutex_lock(&sensor->lock);
2545         fi->interval = sensor->frame_interval;
2546         mutex_unlock(&sensor->lock);
2547
2548         return 0;
2549 }
2550
2551 static int ov5640_s_frame_interval(struct v4l2_subdev *sd,
2552                                    struct v4l2_subdev_frame_interval *fi)
2553 {
2554         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2555         const struct ov5640_mode_info *mode;
2556         int frame_rate, ret = 0;
2557
2558         if (fi->pad != 0)
2559                 return -EINVAL;
2560
2561         mutex_lock(&sensor->lock);
2562
2563         if (sensor->streaming) {
2564                 ret = -EBUSY;
2565                 goto out;
2566         }
2567
2568         mode = sensor->current_mode;
2569
2570         frame_rate = ov5640_try_frame_interval(sensor, &fi->interval,
2571                                                mode->hact, mode->vact);
2572         if (frame_rate < 0)
2573                 frame_rate = OV5640_15_FPS;
2574
2575         mode = ov5640_find_mode(sensor, frame_rate, mode->hact,
2576                                 mode->vact, true);
2577         if (!mode) {
2578                 ret = -EINVAL;
2579                 goto out;
2580         }
2581
2582         if (mode != sensor->current_mode ||
2583             frame_rate != sensor->current_fr) {
2584                 sensor->current_fr = frame_rate;
2585                 sensor->frame_interval = fi->interval;
2586                 sensor->current_mode = mode;
2587                 sensor->pending_mode_change = true;
2588         }
2589 out:
2590         mutex_unlock(&sensor->lock);
2591         return ret;
2592 }
2593
2594 static int ov5640_enum_mbus_code(struct v4l2_subdev *sd,
2595                                  struct v4l2_subdev_pad_config *cfg,
2596                                  struct v4l2_subdev_mbus_code_enum *code)
2597 {
2598         if (code->pad != 0)
2599                 return -EINVAL;
2600         if (code->index >= ARRAY_SIZE(ov5640_formats))
2601                 return -EINVAL;
2602
2603         code->code = ov5640_formats[code->index].code;
2604         return 0;
2605 }
2606
2607 static int ov5640_s_stream(struct v4l2_subdev *sd, int enable)
2608 {
2609         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2610         int ret = 0;
2611
2612         mutex_lock(&sensor->lock);
2613
2614         if (sensor->streaming == !enable) {
2615                 if (enable && sensor->pending_mode_change) {
2616                         ret = ov5640_set_mode(sensor);
2617                         if (ret)
2618                                 goto out;
2619                 }
2620
2621                 if (enable && sensor->pending_fmt_change) {
2622                         ret = ov5640_set_framefmt(sensor, &sensor->fmt);
2623                         if (ret)
2624                                 goto out;
2625                         sensor->pending_fmt_change = false;
2626                 }
2627
2628                 if (sensor->ep.bus_type == V4L2_MBUS_CSI2)
2629                         ret = ov5640_set_stream_mipi(sensor, enable);
2630                 else
2631                         ret = ov5640_set_stream_dvp(sensor, enable);
2632
2633                 if (!ret)
2634                         sensor->streaming = enable;
2635         }
2636 out:
2637         mutex_unlock(&sensor->lock);
2638         return ret;
2639 }
2640
2641 static const struct v4l2_subdev_core_ops ov5640_core_ops = {
2642         .s_power = ov5640_s_power,
2643 };
2644
2645 static const struct v4l2_subdev_video_ops ov5640_video_ops = {
2646         .g_frame_interval = ov5640_g_frame_interval,
2647         .s_frame_interval = ov5640_s_frame_interval,
2648         .s_stream = ov5640_s_stream,
2649 };
2650
2651 static const struct v4l2_subdev_pad_ops ov5640_pad_ops = {
2652         .enum_mbus_code = ov5640_enum_mbus_code,
2653         .get_fmt = ov5640_get_fmt,
2654         .set_fmt = ov5640_set_fmt,
2655         .enum_frame_size = ov5640_enum_frame_size,
2656         .enum_frame_interval = ov5640_enum_frame_interval,
2657 };
2658
2659 static const struct v4l2_subdev_ops ov5640_subdev_ops = {
2660         .core = &ov5640_core_ops,
2661         .video = &ov5640_video_ops,
2662         .pad = &ov5640_pad_ops,
2663 };
2664
2665 static int ov5640_get_regulators(struct ov5640_dev *sensor)
2666 {
2667         int i;
2668
2669         for (i = 0; i < OV5640_NUM_SUPPLIES; i++)
2670                 sensor->supplies[i].supply = ov5640_supply_name[i];
2671
2672         return devm_regulator_bulk_get(&sensor->i2c_client->dev,
2673                                        OV5640_NUM_SUPPLIES,
2674                                        sensor->supplies);
2675 }
2676
2677 static int ov5640_check_chip_id(struct ov5640_dev *sensor)
2678 {
2679         struct i2c_client *client = sensor->i2c_client;
2680         int ret = 0;
2681         u16 chip_id;
2682
2683         ret = ov5640_set_power_on(sensor);
2684         if (ret)
2685                 return ret;
2686
2687         ret = ov5640_read_reg16(sensor, OV5640_REG_CHIP_ID, &chip_id);
2688         if (ret) {
2689                 dev_err(&client->dev, "%s: failed to read chip identifier\n",
2690                         __func__);
2691                 goto power_off;
2692         }
2693
2694         if (chip_id != 0x5640) {
2695                 dev_err(&client->dev, "%s: wrong chip identifier, expected 0x5640, got 0x%x\n",
2696                         __func__, chip_id);
2697                 ret = -ENXIO;
2698         }
2699
2700 power_off:
2701         ov5640_set_power_off(sensor);
2702         return ret;
2703 }
2704
2705 static int ov5640_probe(struct i2c_client *client,
2706                         const struct i2c_device_id *id)
2707 {
2708         struct device *dev = &client->dev;
2709         struct fwnode_handle *endpoint;
2710         struct ov5640_dev *sensor;
2711         struct v4l2_mbus_framefmt *fmt;
2712         u32 rotation;
2713         int ret;
2714
2715         sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
2716         if (!sensor)
2717                 return -ENOMEM;
2718
2719         sensor->i2c_client = client;
2720
2721         /*
2722          * default init sequence initialize sensor to
2723          * YUV422 UYVY VGA@30fps
2724          */
2725         fmt = &sensor->fmt;
2726         fmt->code = MEDIA_BUS_FMT_UYVY8_2X8;
2727         fmt->colorspace = V4L2_COLORSPACE_SRGB;
2728         fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
2729         fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
2730         fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
2731         fmt->width = 640;
2732         fmt->height = 480;
2733         fmt->field = V4L2_FIELD_NONE;
2734         sensor->frame_interval.numerator = 1;
2735         sensor->frame_interval.denominator = ov5640_framerates[OV5640_30_FPS];
2736         sensor->current_fr = OV5640_30_FPS;
2737         sensor->current_mode =
2738                 &ov5640_mode_data[OV5640_30_FPS][OV5640_MODE_VGA_640_480];
2739         sensor->last_mode = sensor->current_mode;
2740
2741         sensor->ae_target = 52;
2742
2743         /* optional indication of physical rotation of sensor */
2744         ret = fwnode_property_read_u32(dev_fwnode(&client->dev), "rotation",
2745                                        &rotation);
2746         if (!ret) {
2747                 switch (rotation) {
2748                 case 180:
2749                         sensor->upside_down = true;
2750                         /* fall through */
2751                 case 0:
2752                         break;
2753                 default:
2754                         dev_warn(dev, "%u degrees rotation is not supported, ignoring...\n",
2755                                  rotation);
2756                 }
2757         }
2758
2759         endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev),
2760                                                   NULL);
2761         if (!endpoint) {
2762                 dev_err(dev, "endpoint node not found\n");
2763                 return -EINVAL;
2764         }
2765
2766         ret = v4l2_fwnode_endpoint_parse(endpoint, &sensor->ep);
2767         fwnode_handle_put(endpoint);
2768         if (ret) {
2769                 dev_err(dev, "Could not parse endpoint\n");
2770                 return ret;
2771         }
2772
2773         /* get system clock (xclk) */
2774         sensor->xclk = devm_clk_get(dev, "xclk");
2775         if (IS_ERR(sensor->xclk)) {
2776                 dev_err(dev, "failed to get xclk\n");
2777                 return PTR_ERR(sensor->xclk);
2778         }
2779
2780         sensor->xclk_freq = clk_get_rate(sensor->xclk);
2781         if (sensor->xclk_freq < OV5640_XCLK_MIN ||
2782             sensor->xclk_freq > OV5640_XCLK_MAX) {
2783                 dev_err(dev, "xclk frequency out of range: %d Hz\n",
2784                         sensor->xclk_freq);
2785                 return -EINVAL;
2786         }
2787
2788         /* request optional power down pin */
2789         sensor->pwdn_gpio = devm_gpiod_get_optional(dev, "powerdown",
2790                                                     GPIOD_OUT_HIGH);
2791         if (IS_ERR(sensor->pwdn_gpio))
2792                 return PTR_ERR(sensor->pwdn_gpio);
2793
2794         /* request optional reset pin */
2795         sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset",
2796                                                      GPIOD_OUT_HIGH);
2797         if (IS_ERR(sensor->reset_gpio))
2798                 return PTR_ERR(sensor->reset_gpio);
2799
2800         v4l2_i2c_subdev_init(&sensor->sd, client, &ov5640_subdev_ops);
2801
2802         sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
2803         sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
2804         sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
2805         ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
2806         if (ret)
2807                 return ret;
2808
2809         ret = ov5640_get_regulators(sensor);
2810         if (ret)
2811                 return ret;
2812
2813         mutex_init(&sensor->lock);
2814
2815         ret = ov5640_check_chip_id(sensor);
2816         if (ret)
2817                 goto entity_cleanup;
2818
2819         ret = ov5640_init_controls(sensor);
2820         if (ret)
2821                 goto entity_cleanup;
2822
2823         ret = v4l2_async_register_subdev(&sensor->sd);
2824         if (ret)
2825                 goto free_ctrls;
2826
2827         return 0;
2828
2829 free_ctrls:
2830         v4l2_ctrl_handler_free(&sensor->ctrls.handler);
2831 entity_cleanup:
2832         media_entity_cleanup(&sensor->sd.entity);
2833         mutex_destroy(&sensor->lock);
2834         return ret;
2835 }
2836
2837 static int ov5640_remove(struct i2c_client *client)
2838 {
2839         struct v4l2_subdev *sd = i2c_get_clientdata(client);
2840         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2841
2842         v4l2_async_unregister_subdev(&sensor->sd);
2843         media_entity_cleanup(&sensor->sd.entity);
2844         v4l2_ctrl_handler_free(&sensor->ctrls.handler);
2845         mutex_destroy(&sensor->lock);
2846
2847         return 0;
2848 }
2849
2850 static const struct i2c_device_id ov5640_id[] = {
2851         {"ov5640", 0},
2852         {},
2853 };
2854 MODULE_DEVICE_TABLE(i2c, ov5640_id);
2855
2856 static const struct of_device_id ov5640_dt_ids[] = {
2857         { .compatible = "ovti,ov5640" },
2858         { /* sentinel */ }
2859 };
2860 MODULE_DEVICE_TABLE(of, ov5640_dt_ids);
2861
2862 static struct i2c_driver ov5640_i2c_driver = {
2863         .driver = {
2864                 .name  = "ov5640",
2865                 .of_match_table = ov5640_dt_ids,
2866         },
2867         .id_table = ov5640_id,
2868         .probe    = ov5640_probe,
2869         .remove   = ov5640_remove,
2870 };
2871
2872 module_i2c_driver(ov5640_i2c_driver);
2873
2874 MODULE_DESCRIPTION("OV5640 MIPI Camera Subdev Driver");
2875 MODULE_LICENSE("GPL");