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_SC_PLLS_CTRL3        0x303d
  51 #define OV5640_REG_SLAVE_ID             0x3100
  52 #define OV5640_REG_SCCB_SYS_CTRL1       0x3103
  53 #define OV5640_REG_SYS_ROOT_DIVIDER     0x3108
  54 #define OV5640_REG_AWB_R_GAIN           0x3400
  55 #define OV5640_REG_AWB_G_GAIN           0x3402
  56 #define OV5640_REG_AWB_B_GAIN           0x3404
  57 #define OV5640_REG_AWB_MANUAL_CTRL      0x3406
  58 #define OV5640_REG_AEC_PK_EXPOSURE_HI   0x3500
  59 #define OV5640_REG_AEC_PK_EXPOSURE_MED  0x3501
  60 #define OV5640_REG_AEC_PK_EXPOSURE_LO   0x3502
  61 #define OV5640_REG_AEC_PK_MANUAL        0x3503
  62 #define OV5640_REG_AEC_PK_REAL_GAIN     0x350a
  63 #define OV5640_REG_AEC_PK_VTS           0x350c
  64 #define OV5640_REG_TIMING_DVPHO         0x3808
  65 #define OV5640_REG_TIMING_DVPVO         0x380a
  66 #define OV5640_REG_TIMING_HTS           0x380c
  67 #define OV5640_REG_TIMING_VTS           0x380e
  68 #define OV5640_REG_TIMING_TC_REG20      0x3820
  69 #define OV5640_REG_TIMING_TC_REG21      0x3821
  70 #define OV5640_REG_AEC_CTRL00           0x3a00
  71 #define OV5640_REG_AEC_B50_STEP         0x3a08
  72 #define OV5640_REG_AEC_B60_STEP         0x3a0a
  73 #define OV5640_REG_AEC_CTRL0D           0x3a0d
  74 #define OV5640_REG_AEC_CTRL0E           0x3a0e
  75 #define OV5640_REG_AEC_CTRL0F           0x3a0f
  76 #define OV5640_REG_AEC_CTRL10           0x3a10
  77 #define OV5640_REG_AEC_CTRL11           0x3a11
  78 #define OV5640_REG_AEC_CTRL1B           0x3a1b
  79 #define OV5640_REG_AEC_CTRL1E           0x3a1e
  80 #define OV5640_REG_AEC_CTRL1F           0x3a1f
  81 #define OV5640_REG_HZ5060_CTRL00        0x3c00
  82 #define OV5640_REG_HZ5060_CTRL01        0x3c01
  83 #define OV5640_REG_SIGMADELTA_CTRL0C    0x3c0c
  84 #define OV5640_REG_FRAME_CTRL01         0x4202
  85 #define OV5640_REG_FORMAT_CONTROL00     0x4300
  86 #define OV5640_REG_POLARITY_CTRL00      0x4740
  87 #define OV5640_REG_MIPI_CTRL00          0x4800
  88 #define OV5640_REG_DEBUG_MODE           0x4814
  89 #define OV5640_REG_PCLK_PERIOD          0x4837
  90 #define OV5640_REG_ISP_FORMAT_MUX_CTRL  0x501f
  91 #define OV5640_REG_PRE_ISP_TEST_SET1    0x503d
  92 #define OV5640_REG_SDE_CTRL0            0x5580
  93 #define OV5640_REG_SDE_CTRL1            0x5581
  94 #define OV5640_REG_SDE_CTRL3            0x5583
  95 #define OV5640_REG_SDE_CTRL4            0x5584
  96 #define OV5640_REG_SDE_CTRL5            0x5585
  97 #define OV5640_REG_AVG_READOUT          0x56a1
  98
  99 enum ov5640_mode_id {
 100         OV5640_MODE_QCIF_176_144 = 0,
 101         OV5640_MODE_QVGA_320_240,
 102         OV5640_MODE_VGA_640_480,
 103         OV5640_MODE_NTSC_720_480,
 104         OV5640_MODE_PAL_720_576,
 105         OV5640_MODE_XGA_1024_768,
 106         OV5640_MODE_720P_1280_720,
 107         OV5640_MODE_1080P_1920_1080,
 108         OV5640_MODE_QSXGA_2592_1944,
 109         OV5640_NUM_MODES,
 110 };
 111
 112 enum ov5640_frame_rate {
 113         OV5640_15_FPS = 0,
 114         OV5640_30_FPS,
 115         OV5640_NUM_FRAMERATES,
 116 };
 117
 118 struct ov5640_pixfmt {
 119         u32 code;
 120         u32 colorspace;
 121 };
 122
 123 static const struct ov5640_pixfmt ov5640_formats[] = {
 124         { MEDIA_BUS_FMT_JPEG_1X8, V4L2_COLORSPACE_JPEG, },
 125         { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_SRGB, },
 126         { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_SRGB, },
 127         { MEDIA_BUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB, },
 128         { MEDIA_BUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB, },
 129 };
 130
 131 /*
 132  * FIXME: remove this when a subdev API becomes available
 133  * to set the MIPI CSI-2 virtual channel.
 134  */
 135 static unsigned int virtual_channel;
 136 module_param(virtual_channel, uint, 0444);
 137 MODULE_PARM_DESC(virtual_channel,
 138                  "MIPI CSI-2 virtual channel (0..3), default 0");
 139
 140 static const int ov5640_framerates[] = {
 141         [OV5640_15_FPS] = 15,
 142         [OV5640_30_FPS] = 30,
 143 };
 144
 145 /* regulator supplies */
 146 static const char * const ov5640_supply_name[] = {
 147         "DOVDD", /* Digital I/O (1.8V) supply */
 148         "DVDD",  /* Digital Core (1.5V) supply */
 149         "AVDD",  /* Analog (2.8V) supply */
 150 };
 151
 152 #define OV5640_NUM_SUPPLIES ARRAY_SIZE(ov5640_supply_name)
 153
 154 /*
 155  * Image size under 1280 * 960 are SUBSAMPLING
 156  * Image size upper 1280 * 960 are SCALING
 157  */
 158 enum ov5640_downsize_mode {
 159         SUBSAMPLING,
 160         SCALING,
 161 };
 162
 163 struct reg_value {
 164         u16 reg_addr;
 165         u8 val;
 166         u8 mask;
 167         u32 delay_ms;
 168 };
 169
 170 struct ov5640_mode_info {
 171         enum ov5640_mode_id id;
 172         enum ov5640_downsize_mode dn_mode;
 173         bool scaler; /* Mode uses ISP scaler (reg 0x5001,BIT(5)=='1') */
 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         {0x3824, 0x02, 0, 0}, {0x482a, 0x06, 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         {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         {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         {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 };
 403
 404 static const struct reg_value ov5640_setting_15fps_XGA_1024_768[] = {
 405         {0x3c07, 0x08, 0, 0},
 406         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 407         {0x3814, 0x31, 0, 0},
 408         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 409         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 410         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 411         {0x3810, 0x00, 0, 0},
 412         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 413         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 414         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 415         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 416         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 417         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 418         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 419         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 420         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 421 };
 422
 423 static const struct reg_value ov5640_setting_30fps_QVGA_320_240[] = {
 424         {0x3c07, 0x08, 0, 0},
 425         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 426         {0x3814, 0x31, 0, 0},
 427         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 428         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 429         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 430         {0x3810, 0x00, 0, 0},
 431         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 432         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 433         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 434         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 435         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 436         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 437         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 438         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 439         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 440 };
 441
 442 static const struct reg_value ov5640_setting_15fps_QVGA_320_240[] = {
 443         {0x3c07, 0x08, 0, 0},
 444         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 445         {0x3814, 0x31, 0, 0},
 446         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 447         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 448         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 449         {0x3810, 0x00, 0, 0},
 450         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 451         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 452         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 453         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 454         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 455         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 456         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 457         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 458         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 459 };
 460
 461 static const struct reg_value ov5640_setting_30fps_QCIF_176_144[] = {
 462         {0x3c07, 0x08, 0, 0},
 463         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 464         {0x3814, 0x31, 0, 0},
 465         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 466         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 467         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 468         {0x3810, 0x00, 0, 0},
 469         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 470         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 471         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 472         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 473         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 474         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 475         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 476         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 477         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 478 };
 479
 480 static const struct reg_value ov5640_setting_15fps_QCIF_176_144[] = {
 481         {0x3c07, 0x08, 0, 0},
 482         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 483         {0x3814, 0x31, 0, 0},
 484         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 485         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 486         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 487         {0x3810, 0x00, 0, 0},
 488         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 489         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 490         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 491         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 492         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 493         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 494         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 495         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 496         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 497 };
 498
 499 static const struct reg_value ov5640_setting_30fps_NTSC_720_480[] = {
 500         {0x3c07, 0x08, 0, 0},
 501         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 502         {0x3814, 0x31, 0, 0},
 503         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 504         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 505         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 506         {0x3810, 0x00, 0, 0},
 507         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x3c, 0, 0},
 508         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 509         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 510         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 511         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 512         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 513         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 514         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 515         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 516 };
 517
 518 static const struct reg_value ov5640_setting_15fps_NTSC_720_480[] = {
 519         {0x3c07, 0x08, 0, 0},
 520         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 521         {0x3814, 0x31, 0, 0},
 522         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 523         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 524         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 525         {0x3810, 0x00, 0, 0},
 526         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x3c, 0, 0},
 527         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 528         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 529         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 530         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 531         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 532         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 533         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 534         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 535 };
 536
 537 static const struct reg_value ov5640_setting_30fps_PAL_720_576[] = {
 538         {0x3c07, 0x08, 0, 0},
 539         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 540         {0x3814, 0x31, 0, 0},
 541         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 542         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 543         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 544         {0x3810, 0x00, 0, 0},
 545         {0x3811, 0x38, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 546         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 547         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 548         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 549         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 550         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 551         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 552         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 553         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 554 };
 555
 556 static const struct reg_value ov5640_setting_15fps_PAL_720_576[] = {
 557         {0x3c07, 0x08, 0, 0},
 558         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 559         {0x3814, 0x31, 0, 0},
 560         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 561         {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
 562         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
 563         {0x3810, 0x00, 0, 0},
 564         {0x3811, 0x38, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
 565         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 566         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
 567         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 568         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 569         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 570         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
 571         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 572         {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
 573 };
 574
 575 static const struct reg_value ov5640_setting_30fps_720P_1280_720[] = {
 576         {0x3008, 0x42, 0, 0},
 577         {0x3c07, 0x07, 0, 0},
 578         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 579         {0x3814, 0x31, 0, 0},
 580         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 581         {0x3802, 0x00, 0, 0}, {0x3803, 0xfa, 0, 0}, {0x3804, 0x0a, 0, 0},
 582         {0x3805, 0x3f, 0, 0}, {0x3806, 0x06, 0, 0}, {0x3807, 0xa9, 0, 0},
 583         {0x3810, 0x00, 0, 0},
 584         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
 585         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 586         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x02, 0, 0},
 587         {0x3a03, 0xe4, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0xbc, 0, 0},
 588         {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x72, 0, 0}, {0x3a0e, 0x01, 0, 0},
 589         {0x3a0d, 0x02, 0, 0}, {0x3a14, 0x02, 0, 0}, {0x3a15, 0xe4, 0, 0},
 590         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x02, 0, 0},
 591         {0x4407, 0x04, 0, 0}, {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0},
 592         {0x3824, 0x04, 0, 0}, {0x5001, 0x83, 0, 0}, {0x4005, 0x1a, 0, 0},
 593         {0x3008, 0x02, 0, 0}, {0x3503, 0,    0, 0},
 594 };
 595
 596 static const struct reg_value ov5640_setting_15fps_720P_1280_720[] = {
 597         {0x3c07, 0x07, 0, 0},
 598         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 599         {0x3814, 0x31, 0, 0},
 600         {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 601         {0x3802, 0x00, 0, 0}, {0x3803, 0xfa, 0, 0}, {0x3804, 0x0a, 0, 0},
 602         {0x3805, 0x3f, 0, 0}, {0x3806, 0x06, 0, 0}, {0x3807, 0xa9, 0, 0},
 603         {0x3810, 0x00, 0, 0},
 604         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
 605         {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
 606         {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x02, 0, 0},
 607         {0x3a03, 0xe4, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0xbc, 0, 0},
 608         {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x72, 0, 0}, {0x3a0e, 0x01, 0, 0},
 609         {0x3a0d, 0x02, 0, 0}, {0x3a14, 0x02, 0, 0}, {0x3a15, 0xe4, 0, 0},
 610         {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x02, 0, 0},
 611         {0x4407, 0x04, 0, 0}, {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0},
 612         {0x3824, 0x04, 0, 0}, {0x5001, 0x83, 0, 0},
 613 };
 614
 615 static const struct reg_value ov5640_setting_30fps_1080P_1920_1080[] = {
 616         {0x3008, 0x42, 0, 0},
 617         {0x3c07, 0x08, 0, 0},
 618         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 619         {0x3814, 0x11, 0, 0},
 620         {0x3815, 0x11, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 621         {0x3802, 0x00, 0, 0}, {0x3803, 0x00, 0, 0}, {0x3804, 0x0a, 0, 0},
 622         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9f, 0, 0},
 623         {0x3810, 0x00, 0, 0},
 624         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
 625         {0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0},
 626         {0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0},
 627         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 628         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 629         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 630         {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0}, {0x4713, 0x03, 0, 0},
 631         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 632         {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 0},
 633         {0x3c07, 0x07, 0, 0}, {0x3c08, 0x00, 0, 0},
 634         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 635         {0x3800, 0x01, 0, 0}, {0x3801, 0x50, 0, 0}, {0x3802, 0x01, 0, 0},
 636         {0x3803, 0xb2, 0, 0}, {0x3804, 0x08, 0, 0}, {0x3805, 0xef, 0, 0},
 637         {0x3806, 0x05, 0, 0}, {0x3807, 0xf1, 0, 0},
 638         {0x3612, 0x2b, 0, 0}, {0x3708, 0x64, 0, 0},
 639         {0x3a02, 0x04, 0, 0}, {0x3a03, 0x60, 0, 0}, {0x3a08, 0x01, 0, 0},
 640         {0x3a09, 0x50, 0, 0}, {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x18, 0, 0},
 641         {0x3a0e, 0x03, 0, 0}, {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x04, 0, 0},
 642         {0x3a15, 0x60, 0, 0}, {0x4713, 0x02, 0, 0}, {0x4407, 0x04, 0, 0},
 643         {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0}, {0x3824, 0x04, 0, 0},
 644         {0x4005, 0x1a, 0, 0}, {0x3008, 0x02, 0, 0},
 645         {0x3503, 0, 0, 0},
 646 };
 647
 648 static const struct reg_value ov5640_setting_15fps_1080P_1920_1080[] = {
 649         {0x3008, 0x42, 0, 0},
 650         {0x3c07, 0x08, 0, 0},
 651         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 652         {0x3814, 0x11, 0, 0},
 653         {0x3815, 0x11, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 654         {0x3802, 0x00, 0, 0}, {0x3803, 0x00, 0, 0}, {0x3804, 0x0a, 0, 0},
 655         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9f, 0, 0},
 656         {0x3810, 0x00, 0, 0},
 657         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
 658         {0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0},
 659         {0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0},
 660         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 661         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 662         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 663         {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0}, {0x4713, 0x03, 0, 0},
 664         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 665         {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 0},
 666         {0x3c07, 0x07, 0, 0}, {0x3c08, 0x00, 0, 0},
 667         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 668         {0x3800, 0x01, 0, 0}, {0x3801, 0x50, 0, 0}, {0x3802, 0x01, 0, 0},
 669         {0x3803, 0xb2, 0, 0}, {0x3804, 0x08, 0, 0}, {0x3805, 0xef, 0, 0},
 670         {0x3806, 0x05, 0, 0}, {0x3807, 0xf1, 0, 0},
 671         {0x3612, 0x2b, 0, 0}, {0x3708, 0x64, 0, 0},
 672         {0x3a02, 0x04, 0, 0}, {0x3a03, 0x60, 0, 0}, {0x3a08, 0x01, 0, 0},
 673         {0x3a09, 0x50, 0, 0}, {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x18, 0, 0},
 674         {0x3a0e, 0x03, 0, 0}, {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x04, 0, 0},
 675         {0x3a15, 0x60, 0, 0}, {0x4713, 0x02, 0, 0}, {0x4407, 0x04, 0, 0},
 676         {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0}, {0x3824, 0x04, 0, 0},
 677         {0x4005, 0x1a, 0, 0}, {0x3008, 0x02, 0, 0}, {0x3503, 0, 0, 0},
 678 };
 679
 680 static const struct reg_value ov5640_setting_15fps_QSXGA_2592_1944[] = {
 681         {0x3c07, 0x08, 0, 0},
 682         {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
 683         {0x3814, 0x11, 0, 0},
 684         {0x3815, 0x11, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
 685         {0x3802, 0x00, 0, 0}, {0x3803, 0x00, 0, 0}, {0x3804, 0x0a, 0, 0},
 686         {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9f, 0, 0},
 687         {0x3810, 0x00, 0, 0},
 688         {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
 689         {0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0},
 690         {0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0},
 691         {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
 692         {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
 693         {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
 694         {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0}, {0x4713, 0x03, 0, 0},
 695         {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
 696         {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 70},
 697 };
 698
 699 /* power-on sensor init reg table */
 700 static const struct ov5640_mode_info ov5640_mode_init_data = {
 701         0, SUBSAMPLING, 0, 640, 1896, 480, 984,
 702         ov5640_init_setting_30fps_VGA,
 703         ARRAY_SIZE(ov5640_init_setting_30fps_VGA),
 704 };
 705
 706 static const struct ov5640_mode_info
 707 ov5640_mode_data[OV5640_NUM_FRAMERATES][OV5640_NUM_MODES] = {
 708         {
 709                 {OV5640_MODE_QCIF_176_144, SUBSAMPLING, 1,
 710                  176, 1896, 144, 984,
 711                  ov5640_setting_15fps_QCIF_176_144,
 712                  ARRAY_SIZE(ov5640_setting_15fps_QCIF_176_144)},
 713                 {OV5640_MODE_QVGA_320_240, SUBSAMPLING, 1,
 714                  320, 1896, 240, 984,
 715                  ov5640_setting_15fps_QVGA_320_240,
 716                  ARRAY_SIZE(ov5640_setting_15fps_QVGA_320_240)},
 717                 {OV5640_MODE_VGA_640_480, SUBSAMPLING, 1,
 718                  640, 1896, 480, 1080,
 719                  ov5640_setting_15fps_VGA_640_480,
 720                  ARRAY_SIZE(ov5640_setting_15fps_VGA_640_480)},
 721                 {OV5640_MODE_NTSC_720_480, SUBSAMPLING, 1,
 722                  720, 1896, 480, 984,
 723                  ov5640_setting_15fps_NTSC_720_480,
 724                  ARRAY_SIZE(ov5640_setting_15fps_NTSC_720_480)},
 725                 {OV5640_MODE_PAL_720_576, SUBSAMPLING, 1,
 726                  720, 1896, 576, 984,
 727                  ov5640_setting_15fps_PAL_720_576,
 728                  ARRAY_SIZE(ov5640_setting_15fps_PAL_720_576)},
 729                 {OV5640_MODE_XGA_1024_768, SUBSAMPLING, 1,
 730                  1024, 1896, 768, 1080,
 731                  ov5640_setting_15fps_XGA_1024_768,
 732                  ARRAY_SIZE(ov5640_setting_15fps_XGA_1024_768)},
 733                 {OV5640_MODE_720P_1280_720, SUBSAMPLING, 0,
 734                  1280, 1892, 720, 740,
 735                  ov5640_setting_15fps_720P_1280_720,
 736                  ARRAY_SIZE(ov5640_setting_15fps_720P_1280_720)},
 737                 {OV5640_MODE_1080P_1920_1080, SCALING, 0,
 738                  1920, 2500, 1080, 1120,
 739                  ov5640_setting_15fps_1080P_1920_1080,
 740                  ARRAY_SIZE(ov5640_setting_15fps_1080P_1920_1080)},
 741                 {OV5640_MODE_QSXGA_2592_1944, SCALING, 0,
 742                  2592, 2844, 1944, 1968,
 743                  ov5640_setting_15fps_QSXGA_2592_1944,
 744                  ARRAY_SIZE(ov5640_setting_15fps_QSXGA_2592_1944)},
 745         }, {
 746                 {OV5640_MODE_QCIF_176_144, SUBSAMPLING, 1,
 747                  176, 1896, 144, 984,
 748                  ov5640_setting_30fps_QCIF_176_144,
 749                  ARRAY_SIZE(ov5640_setting_30fps_QCIF_176_144)},
 750                 {OV5640_MODE_QVGA_320_240, SUBSAMPLING, 1,
 751                  320, 1896, 240, 984,
 752                  ov5640_setting_30fps_QVGA_320_240,
 753                  ARRAY_SIZE(ov5640_setting_30fps_QVGA_320_240)},
 754                 {OV5640_MODE_VGA_640_480, SUBSAMPLING, 1,
 755                  640, 1896, 480, 1080,
 756                  ov5640_setting_30fps_VGA_640_480,
 757                  ARRAY_SIZE(ov5640_setting_30fps_VGA_640_480)},
 758                 {OV5640_MODE_NTSC_720_480, SUBSAMPLING, 1,
 759                  720, 1896, 480, 984,
 760                  ov5640_setting_30fps_NTSC_720_480,
 761                  ARRAY_SIZE(ov5640_setting_30fps_NTSC_720_480)},
 762                 {OV5640_MODE_PAL_720_576, SUBSAMPLING, 1,
 763                  720, 1896, 576, 984,
 764                  ov5640_setting_30fps_PAL_720_576,
 765                  ARRAY_SIZE(ov5640_setting_30fps_PAL_720_576)},
 766                 {OV5640_MODE_XGA_1024_768, SUBSAMPLING, 1,
 767                  1024, 1896, 768, 1080,
 768                  ov5640_setting_30fps_XGA_1024_768,
 769                  ARRAY_SIZE(ov5640_setting_30fps_XGA_1024_768)},
 770                 {OV5640_MODE_720P_1280_720, SUBSAMPLING, 0,
 771                  1280, 1892, 720, 740,
 772                  ov5640_setting_30fps_720P_1280_720,
 773                  ARRAY_SIZE(ov5640_setting_30fps_720P_1280_720)},
 774                 {OV5640_MODE_1080P_1920_1080, SCALING, 0,
 775                  1920, 2500, 1080, 1120,
 776                  ov5640_setting_30fps_1080P_1920_1080,
 777                  ARRAY_SIZE(ov5640_setting_30fps_1080P_1920_1080)},
 778                 {OV5640_MODE_QSXGA_2592_1944, -1, 0, 0, 0, 0, 0, NULL, 0},
 779         },
 780 };
 781
 782 static int ov5640_init_slave_id(struct ov5640_dev *sensor)
 783 {
 784         struct i2c_client *client = sensor->i2c_client;
 785         struct i2c_msg msg;
 786         u8 buf[3];
 787         int ret;
 788
 789         if (client->addr == OV5640_DEFAULT_SLAVE_ID)
 790                 return 0;
 791
 792         buf[0] = OV5640_REG_SLAVE_ID >> 8;
 793         buf[1] = OV5640_REG_SLAVE_ID & 0xff;
 794         buf[2] = client->addr << 1;
 795
 796         msg.addr = OV5640_DEFAULT_SLAVE_ID;
 797         msg.flags = 0;
 798         msg.buf = buf;
 799         msg.len = sizeof(buf);
 800
 801         ret = i2c_transfer(client->adapter, &msg, 1);
 802         if (ret < 0) {
 803                 dev_err(&client->dev, "%s: failed with %d\n", __func__, ret);
 804                 return ret;
 805         }
 806
 807         return 0;
 808 }
 809
 810 static int ov5640_write_reg(struct ov5640_dev *sensor, u16 reg, u8 val)
 811 {
 812         struct i2c_client *client = sensor->i2c_client;
 813         struct i2c_msg msg;
 814         u8 buf[3];
 815         int ret;
 816
 817         buf[0] = reg >> 8;
 818         buf[1] = reg & 0xff;
 819         buf[2] = val;
 820
 821         msg.addr = client->addr;
 822         msg.flags = client->flags;
 823         msg.buf = buf;
 824         msg.len = sizeof(buf);
 825
 826         ret = i2c_transfer(client->adapter, &msg, 1);
 827         if (ret < 0) {
 828                 dev_err(&client->dev, "%s: error: reg=%x, val=%x\n",
 829                         __func__, reg, val);
 830                 return ret;
 831         }
 832
 833         return 0;
 834 }
 835
 836 static int ov5640_read_reg(struct ov5640_dev *sensor, u16 reg, u8 *val)
 837 {
 838         struct i2c_client *client = sensor->i2c_client;
 839         struct i2c_msg msg[2];
 840         u8 buf[2];
 841         int ret;
 842
 843         buf[0] = reg >> 8;
 844         buf[1] = reg & 0xff;
 845
 846         msg[0].addr = client->addr;
 847         msg[0].flags = client->flags;
 848         msg[0].buf = buf;
 849         msg[0].len = sizeof(buf);
 850
 851         msg[1].addr = client->addr;
 852         msg[1].flags = client->flags | I2C_M_RD;
 853         msg[1].buf = buf;
 854         msg[1].len = 1;
 855
 856         ret = i2c_transfer(client->adapter, msg, 2);
 857         if (ret < 0) {
 858                 dev_err(&client->dev, "%s: error: reg=%x\n",
 859                         __func__, reg);
 860                 return ret;
 861         }
 862
 863         *val = buf[0];
 864         return 0;
 865 }
 866
 867 static int ov5640_read_reg16(struct ov5640_dev *sensor, u16 reg, u16 *val)
 868 {
 869         u8 hi, lo;
 870         int ret;
 871
 872         ret = ov5640_read_reg(sensor, reg, &hi);
 873         if (ret)
 874                 return ret;
 875         ret = ov5640_read_reg(sensor, reg + 1, &lo);
 876         if (ret)
 877                 return ret;
 878
 879         *val = ((u16)hi << 8) | (u16)lo;
 880         return 0;
 881 }
 882
 883 static int ov5640_write_reg16(struct ov5640_dev *sensor, u16 reg, u16 val)
 884 {
 885         int ret;
 886
 887         ret = ov5640_write_reg(sensor, reg, val >> 8);
 888         if (ret)
 889                 return ret;
 890
 891         return ov5640_write_reg(sensor, reg + 1, val & 0xff);
 892 }
 893
 894 static int ov5640_mod_reg(struct ov5640_dev *sensor, u16 reg,
 895                           u8 mask, u8 val)
 896 {
 897         u8 readval;
 898         int ret;
 899
 900         ret = ov5640_read_reg(sensor, reg, &readval);
 901         if (ret)
 902                 return ret;
 903
 904         readval &= ~mask;
 905         val &= mask;
 906         val |= readval;
 907
 908         return ov5640_write_reg(sensor, reg, val);
 909 }
 910
 911 /*
 912  *
 913  * The current best guess of the clock tree, as reverse engineered by several
 914  * people on the media mailing list:
 915  *
 916  *   +--------------+
 917  *   |  Ext. Clock  |
 918  *   +------+-------+
 919  *          |
 920  *   +------+-------+ - reg 0x3037[3:0] for the pre-divider
 921  *   | System PLL   | - reg 0x3036 for the multiplier
 922  *   +--+-----------+ - reg 0x3035[7:4] for the system divider
 923  *      |
 924  *      |   +--------------+
 925  *      |---+  MIPI Rate   | - reg 0x3035[3:0] for the MIPI root divider
 926  *      |   +--------------+
 927  *      |
 928  *   +--+-----------+
 929  *   | PLL Root Div | - (reg 0x3037[4])+1 for the root divider
 930  *   +--+-----------+
 931  *          |
 932  *   +------+-------+
 933  *   | MIPI Bit Div | - reg 0x3034[3:0]/4 for divider when in MIPI mode, else 1
 934  *   +--+-----------+
 935  *      |
 936  *      |   +--------------+
 937  *      |---+     SCLK     | - log2(reg 0x3108[1:0]) for the root divider
 938  *      |   +--------------+
 939  *      |
 940  *   +--+-----------+ - reg 0x3035[3:0] for the MIPI root divider
 941  *   |    PCLK      | - log2(reg 0x3108[5:4]) for the DVP root divider
 942  *   +--------------+
 943  *
 944  * Not all limitations of register values are documented above, see ov5640
 945  * datasheet.
 946  *
 947  * In order for the sensor to operate correctly the ratio of
 948  * SCLK:PCLK:MIPI RATE must be 1:2:8 when the scalar in the ISP is not
 949  * enabled, and 1:1:4 when it is enabled (MIPI rate doesn't matter in DVP mode).
 950  * The ratio of these different clocks is maintained by the constant div values
 951  * below, with PCLK div being selected based on if the mode is using the scalar.
 952  */
 953
 954 /*
 955  * This is supposed to be ranging from 1 to 16, but the value is
 956  * always set to either 1 or 2 in the vendor kernels.
 957  */
 958 #define OV5640_SYSDIV_MIN       1
 959 #define OV5640_SYSDIV_MAX       12
 960
 961 /*
 962  * This is supposed to be ranging from 1 to 8, but the value is always
 963  * set to 3 in the vendor kernels.
 964  */
 965 #define OV5640_PLL_PREDIV       2
 966
 967 /*
 968  *This is supposed to be ranging from 4-252, but must be even when >127
 969  */
 970 #define OV5640_PLL_MULT_MIN     4
 971 #define OV5640_PLL_MULT_MAX     252
 972
 973 /*
 974  * This is supposed to be ranging from 1 to 2, but the value is always
 975  * set to 1 in the vendor kernels.
 976  */
 977 #define OV5640_PLL_DVP_ROOT_DIV         1
 978 #define OV5640_PLL_MIPI_ROOT_DIV        2
 979
 980 /*
 981  * This is supposed to be ranging from 1 to 8, but the value is always
 982  * set to 2 in the vendor kernels.
 983  */
 984 #define OV5640_SCLK_ROOT_DIV    2
 985
 986 /*
 987  * This is equal to the MIPI bit rate divided by 4. Now it is hardcoded to
 988  * only work with 8-bit formats, so this value will need to be set in
 989  * software if support for 10-bit formats is added. The bit divider is
 990  * only active when in MIPI mode (not DVP)
 991  */
 992 #define OV5640_BIT_DIV          2
 993
 994 static unsigned long ov5640_compute_sclk(struct ov5640_dev *sensor,
 995                                          u8 sys_div, u8 pll_prediv,
 996                                          u8 pll_mult, u8 pll_div,
 997                                          u8 sclk_div)
 998 {
 999         unsigned long rate = clk_get_rate(sensor->xclk);
1000
1001         rate = rate / pll_prediv * pll_mult / sys_div / pll_div;
1002         if (sensor->ep.bus_type == V4L2_MBUS_CSI2)
1003                 rate = rate / OV5640_BIT_DIV;
1004
1005         return rate / sclk_div;
1006 }
1007
1008 static unsigned long ov5640_calc_sclk(struct ov5640_dev *sensor,
1009                                       unsigned long rate,
1010                                       u8 *sysdiv, u8 *prediv, u8 pll_rdiv,
1011                                       u8 *mult, u8 *sclk_rdiv)
1012 {
1013         unsigned long best = ~0;
1014         u8 best_sysdiv = 1, best_mult = 1;
1015         u8 _sysdiv, _pll_mult;
1016
1017         for (_sysdiv = OV5640_SYSDIV_MIN;
1018              _sysdiv <= OV5640_SYSDIV_MAX;
1019              _sysdiv++) {
1020                 for (_pll_mult = OV5640_PLL_MULT_MIN;
1021                      _pll_mult <= OV5640_PLL_MULT_MAX;
1022                      _pll_mult++) {
1023                         unsigned long _rate;
1024
1025                         /*
1026                          * The PLL multiplier cannot be odd if above
1027                          * 127.
1028                          */
1029                         if (_pll_mult > 127 && (_pll_mult % 2))
1030                                 continue;
1031
1032                         _rate = ov5640_compute_sclk(sensor, _sysdiv,
1033                                                     OV5640_PLL_PREDIV,
1034                                                     _pll_mult,
1035                                                     pll_rdiv,
1036                                                     OV5640_SCLK_ROOT_DIV);
1037
1038                         if (abs(rate - _rate) < abs(rate - best)) {
1039                                 best = _rate;
1040                                 best_sysdiv = _sysdiv;
1041                                 best_mult = _pll_mult;
1042                         }
1043
1044                         if (_rate == rate)
1045                                 goto out;
1046                         if (_rate > rate)
1047                                 break;
1048                 }
1049         }
1050
1051 out:
1052         *sysdiv = best_sysdiv;
1053         *prediv = OV5640_PLL_PREDIV;
1054         *mult = best_mult;
1055         *sclk_rdiv = OV5640_SCLK_ROOT_DIV;
1056         return best;
1057 }
1058
1059 static int ov5640_set_sclk(struct ov5640_dev *sensor,
1060                            const struct ov5640_mode_info *mode)
1061 {
1062         u8 sysdiv, prediv, mult, pll_rdiv, sclk_rdiv, mipi_div, pclk_div;
1063         u8 pclk_period;
1064         int ret;
1065         unsigned long sclk, rate, pclk;
1066         unsigned char bpp;
1067
1068         /*
1069          * All the formats we support have 2 bytes per pixel, except for JPEG
1070          * which is 1 byte per pixel.
1071          */
1072         bpp = sensor->fmt.code == MEDIA_BUS_FMT_JPEG_1X8 ? 1 : 2;
1073         rate = mode->vtot * mode->htot * bpp;
1074         rate *= ov5640_framerates[sensor->current_fr];
1075
1076         if (sensor->ep.bus_type == V4L2_MBUS_CSI2)
1077                 rate = rate / sensor->ep.bus.mipi_csi2.num_data_lanes;
1078
1079         pll_rdiv = (sensor->ep.bus_type == V4L2_MBUS_CSI2) ?
1080                    OV5640_PLL_MIPI_ROOT_DIV : OV5640_PLL_DVP_ROOT_DIV;
1081
1082         sclk = ov5640_calc_sclk(sensor, rate, &sysdiv, &prediv, pll_rdiv,
1083                                 &mult, &sclk_rdiv);
1084
1085         if (sensor->ep.bus_type == V4L2_MBUS_CSI2) {
1086                 mipi_div = (sensor->current_mode->scaler) ? 2 : 1;
1087                 pclk_div = 1;
1088
1089                 /*
1090                  * Calculate pclk period * number of CSI2 lanes in ns for MIPI
1091                  * timing.
1092                  */
1093                 pclk = sclk * sclk_rdiv / mipi_div;
1094                 pclk_period = (u8)((1000000000UL + pclk / 2UL) / pclk);
1095                 pclk_period = pclk_period *
1096                               sensor->ep.bus.mipi_csi2.num_data_lanes;
1097                 ret = ov5640_write_reg(sensor, OV5640_REG_PCLK_PERIOD,
1098                                        pclk_period);
1099                 if (ret)
1100                         return ret;
1101         } else {
1102                 mipi_div = 1;
1103                 pclk_div = (sensor->current_mode->scaler) ? 2 : 1;
1104         }
1105
1106         ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL1,
1107                              0xff, (sysdiv << 4) | (mipi_div & 0x0f));
1108         if (ret)
1109                 return ret;
1110
1111         ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL2,
1112                              0xff, mult);
1113         if (ret)
1114                 return ret;
1115
1116         ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL3,
1117                              0x1f, prediv | ((pll_rdiv - 1) << 4));
1118         if (ret)
1119                 return ret;
1120
1121         return ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x3F,
1122                               (ilog2(pclk_div) << 4) |
1123                               (ilog2(sclk_rdiv / 2) << 2) |
1124                               ilog2(sclk_rdiv));
1125 }
1126
1127 /* download ov5640 settings to sensor through i2c */
1128 static int ov5640_set_timings(struct ov5640_dev *sensor,
1129                               const struct ov5640_mode_info *mode)
1130 {
1131         int ret;
1132
1133         ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPHO, mode->hact);
1134         if (ret < 0)
1135                 return ret;
1136
1137         ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPVO, mode->vact);
1138         if (ret < 0)
1139                 return ret;
1140
1141         ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HTS, mode->htot);
1142         if (ret < 0)
1143                 return ret;
1144
1145         return ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS, mode->vtot);
1146 }
1147
1148 static int ov5640_load_regs(struct ov5640_dev *sensor,
1149                             const struct ov5640_mode_info *mode)
1150 {
1151         const struct reg_value *regs = mode->reg_data;
1152         unsigned int i;
1153         u32 delay_ms;
1154         u16 reg_addr;
1155         u8 mask, val;
1156         int ret = 0;
1157
1158         for (i = 0; i < mode->reg_data_size; ++i, ++regs) {
1159                 delay_ms = regs->delay_ms;
1160                 reg_addr = regs->reg_addr;
1161                 val = regs->val;
1162                 mask = regs->mask;
1163
1164                 if (mask)
1165                         ret = ov5640_mod_reg(sensor, reg_addr, mask, val);
1166                 else
1167                         ret = ov5640_write_reg(sensor, reg_addr, val);
1168                 if (ret)
1169                         break;
1170
1171                 if (delay_ms)
1172                         usleep_range(1000 * delay_ms, 1000 * delay_ms + 100);
1173         }
1174
1175         return ov5640_set_timings(sensor, mode);
1176 }
1177
1178 static int ov5640_set_autoexposure(struct ov5640_dev *sensor, bool on)
1179 {
1180         return ov5640_mod_reg(sensor, OV5640_REG_AEC_PK_MANUAL,
1181                               BIT(0), on ? 0 : BIT(0));
1182 }
1183
1184 /* read exposure, in number of line periods */
1185 static int ov5640_get_exposure(struct ov5640_dev *sensor)
1186 {
1187         int exp, ret;
1188         u8 temp;
1189
1190         ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_HI, &temp);
1191         if (ret)
1192                 return ret;
1193         exp = ((int)temp & 0x0f) << 16;
1194         ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_MED, &temp);
1195         if (ret)
1196                 return ret;
1197         exp |= ((int)temp << 8);
1198         ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_LO, &temp);
1199         if (ret)
1200                 return ret;
1201         exp |= (int)temp;
1202
1203         return exp >> 4;
1204 }
1205
1206 /* write exposure, given number of line periods */
1207 static int ov5640_set_exposure(struct ov5640_dev *sensor, u32 exposure)
1208 {
1209         int ret;
1210
1211         exposure <<= 4;
1212
1213         ret = ov5640_write_reg(sensor,
1214                                OV5640_REG_AEC_PK_EXPOSURE_LO,
1215                                exposure & 0xff);
1216         if (ret)
1217                 return ret;
1218         ret = ov5640_write_reg(sensor,
1219                                OV5640_REG_AEC_PK_EXPOSURE_MED,
1220                                (exposure >> 8) & 0xff);
1221         if (ret)
1222                 return ret;
1223         return ov5640_write_reg(sensor,
1224                                 OV5640_REG_AEC_PK_EXPOSURE_HI,
1225                                 (exposure >> 16) & 0x0f);
1226 }
1227
1228 static int ov5640_get_gain(struct ov5640_dev *sensor)
1229 {
1230         u16 gain;
1231         int ret;
1232
1233         ret = ov5640_read_reg16(sensor, OV5640_REG_AEC_PK_REAL_GAIN, &gain);
1234         if (ret)
1235                 return ret;
1236
1237         return gain & 0x3ff;
1238 }
1239
1240 static int ov5640_set_gain(struct ov5640_dev *sensor, int gain)
1241 {
1242         return ov5640_write_reg16(sensor, OV5640_REG_AEC_PK_REAL_GAIN,
1243                                   (u16)gain & 0x3ff);
1244 }
1245
1246 static int ov5640_set_autogain(struct ov5640_dev *sensor, bool on)
1247 {
1248         return ov5640_mod_reg(sensor, OV5640_REG_AEC_PK_MANUAL,
1249                               BIT(1), on ? 0 : BIT(1));
1250 }
1251
1252 static int ov5640_set_stream_dvp(struct ov5640_dev *sensor, bool on)
1253 {
1254         int ret;
1255         unsigned int flags = sensor->ep.bus.parallel.flags;
1256         u8 pclk_pol = 0;
1257         u8 hsync_pol = 0;
1258         u8 vsync_pol = 0;
1259
1260         /*
1261          * Note about parallel port configuration.
1262          *
1263          * When configured in parallel mode, the OV5640 will
1264          * output 10 bits data on DVP data lines [9:0].
1265          * If only 8 bits data are wanted, the 8 bits data lines
1266          * of the camera interface must be physically connected
1267          * on the DVP data lines [9:2].
1268          *
1269          * Control lines polarity can be configured through
1270          * devicetree endpoint control lines properties.
1271          * If no endpoint control lines properties are set,
1272          * polarity will be as below:
1273          * - VSYNC:     active high
1274          * - HREF:      active low
1275          * - PCLK:      active low
1276          */
1277
1278         if (on) {
1279                 /*
1280                  * reset MIPI PCLK/SERCLK divider
1281                  *
1282                  * SC PLL CONTRL1 0
1283                  * - [3..0]:    MIPI PCLK/SERCLK divider
1284                  */
1285                 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL1, 0x0f, 0);
1286                 if (ret)
1287                         return ret;
1288
1289                 /*
1290                  * configure parallel port control lines polarity
1291                  *
1292                  * POLARITY CTRL0
1293                  * - [5]:       PCLK polarity (0: active low, 1: active high)
1294                  * - [1]:       HREF polarity (0: active low, 1: active high)
1295                  * - [0]:       VSYNC polarity (mismatch here between
1296                  *              datasheet and hardware, 0 is active high
1297                  *              and 1 is active low...)
1298                  */
1299                 if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
1300                         pclk_pol = 1;
1301                 if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
1302                         hsync_pol = 1;
1303                 if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
1304                         vsync_pol = 1;
1305
1306                 ret = ov5640_write_reg(sensor,
1307                                        OV5640_REG_POLARITY_CTRL00,
1308                                        (pclk_pol << 5) |
1309                                        (hsync_pol << 1) |
1310                                        vsync_pol);
1311
1312                 if (ret)
1313                         return ret;
1314         }
1315
1316         /*
1317          * powerdown MIPI TX/RX PHY & disable MIPI
1318          *
1319          * MIPI CONTROL 00
1320          * 4:    PWDN PHY TX
1321          * 3:    PWDN PHY RX
1322          * 2:    MIPI enable
1323          */
1324         ret = ov5640_write_reg(sensor,
1325                                OV5640_REG_IO_MIPI_CTRL00, on ? 0x18 : 0);
1326         if (ret)
1327                 return ret;
1328
1329         /*
1330          * enable VSYNC/HREF/PCLK DVP control lines
1331          * & D[9:6] DVP data lines
1332          *
1333          * PAD OUTPUT ENABLE 01
1334          * - 6:         VSYNC output enable
1335          * - 5:         HREF output enable
1336          * - 4:         PCLK output enable
1337          * - [3:0]:     D[9:6] output enable
1338          */
1339         ret = ov5640_write_reg(sensor,
1340                                OV5640_REG_PAD_OUTPUT_ENABLE01,
1341                                on ? 0x7f : 0);
1342         if (ret)
1343                 return ret;
1344
1345         /*
1346          * enable D[5:0] DVP data lines
1347          *
1348          * PAD OUTPUT ENABLE 02
1349          * - [7:2]:     D[5:0] output enable
1350          */
1351         return ov5640_write_reg(sensor,
1352                                 OV5640_REG_PAD_OUTPUT_ENABLE02,
1353                                 on ? 0xfc : 0);
1354 }
1355
1356 static int ov5640_set_stream_mipi(struct ov5640_dev *sensor, bool on)
1357 {
1358         int ret;
1359
1360         /*
1361          * Enable/disable the MIPI interface
1362          *
1363          * 0x300e = on ? 0x45 : 0x40
1364          *
1365          * FIXME: the sensor manual (version 2.03) reports
1366          * [7:5] = 000  : 1 data lane mode
1367          * [7:5] = 001  : 2 data lanes mode
1368          * But this settings do not work, while the following ones
1369          * have been validated for 2 data lanes mode.
1370          *
1371          * [7:5] = 010  : 2 data lanes mode
1372          * [4] = 0      : Power up MIPI HS Tx
1373          * [3] = 0      : Power up MIPI LS Rx
1374          * [2] = 1/0    : MIPI interface enable/disable
1375          * [1:0] = 01/00: FIXME: 'debug'
1376          */
1377         ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00,
1378                                on ? 0x45 : 0x40);
1379         if (ret)
1380                 return ret;
1381
1382         return ov5640_write_reg(sensor, OV5640_REG_FRAME_CTRL01,
1383                                 on ? 0x00 : 0x0f);
1384 }
1385
1386 static int ov5640_get_sysclk(struct ov5640_dev *sensor)
1387 {
1388          /* calculate sysclk */
1389         u32 xvclk = sensor->xclk_freq / 10000;
1390         u32 multiplier, prediv, VCO, sysdiv, pll_rdiv;
1391         u32 sclk_rdiv_map[] = {1, 2, 4, 8};
1392         u32 bit_div2x = 1, sclk_rdiv, sysclk;
1393         u8 temp1, temp2;
1394         int ret;
1395
1396         ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL0, &temp1);
1397         if (ret)
1398                 return ret;
1399         temp2 = temp1 & 0x0f;
1400         if (temp2 == 8 || temp2 == 10)
1401                 bit_div2x = temp2 / 2;
1402
1403         ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL1, &temp1);
1404         if (ret)
1405                 return ret;
1406         sysdiv = temp1 >> 4;
1407         if (sysdiv == 0)
1408                 sysdiv = 16;
1409
1410         ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL2, &temp1);
1411         if (ret)
1412                 return ret;
1413         multiplier = temp1;
1414
1415         ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL3, &temp1);
1416         if (ret)
1417                 return ret;
1418         prediv = temp1 & 0x0f;
1419         pll_rdiv = ((temp1 >> 4) & 0x01) + 1;
1420
1421         ret = ov5640_read_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, &temp1);
1422         if (ret)
1423                 return ret;
1424         temp2 = temp1 & 0x03;
1425         sclk_rdiv = sclk_rdiv_map[temp2];
1426
1427         if (!prediv || !sysdiv || !pll_rdiv || !bit_div2x)
1428                 return -EINVAL;
1429
1430         VCO = xvclk * multiplier / prediv;
1431
1432         sysclk = VCO / sysdiv / pll_rdiv * 2 / bit_div2x / sclk_rdiv;
1433
1434         return sysclk;
1435 }
1436
1437 static int ov5640_set_night_mode(struct ov5640_dev *sensor)
1438 {
1439          /* read HTS from register settings */
1440         u8 mode;
1441         int ret;
1442
1443         ret = ov5640_read_reg(sensor, OV5640_REG_AEC_CTRL00, &mode);
1444         if (ret)
1445                 return ret;
1446         mode &= 0xfb;
1447         return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL00, mode);
1448 }
1449
1450 static int ov5640_get_hts(struct ov5640_dev *sensor)
1451 {
1452         /* read HTS from register settings */
1453         u16 hts;
1454         int ret;
1455
1456         ret = ov5640_read_reg16(sensor, OV5640_REG_TIMING_HTS, &hts);
1457         if (ret)
1458                 return ret;
1459         return hts;
1460 }
1461
1462 static int ov5640_get_vts(struct ov5640_dev *sensor)
1463 {
1464         u16 vts;
1465         int ret;
1466
1467         ret = ov5640_read_reg16(sensor, OV5640_REG_TIMING_VTS, &vts);
1468         if (ret)
1469                 return ret;
1470         return vts;
1471 }
1472
1473 static int ov5640_set_vts(struct ov5640_dev *sensor, int vts)
1474 {
1475         return ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS, vts);
1476 }
1477
1478 static int ov5640_get_light_freq(struct ov5640_dev *sensor)
1479 {
1480         /* get banding filter value */
1481         int ret, light_freq = 0;
1482         u8 temp, temp1;
1483
1484         ret = ov5640_read_reg(sensor, OV5640_REG_HZ5060_CTRL01, &temp);
1485         if (ret)
1486                 return ret;
1487
1488         if (temp & 0x80) {
1489                 /* manual */
1490                 ret = ov5640_read_reg(sensor, OV5640_REG_HZ5060_CTRL00,
1491                                       &temp1);
1492                 if (ret)
1493                         return ret;
1494                 if (temp1 & 0x04) {
1495                         /* 50Hz */
1496                         light_freq = 50;
1497                 } else {
1498                         /* 60Hz */
1499                         light_freq = 60;
1500                 }
1501         } else {
1502                 /* auto */
1503                 ret = ov5640_read_reg(sensor, OV5640_REG_SIGMADELTA_CTRL0C,
1504                                       &temp1);
1505                 if (ret)
1506                         return ret;
1507
1508                 if (temp1 & 0x01) {
1509                         /* 50Hz */
1510                         light_freq = 50;
1511                 } else {
1512                         /* 60Hz */
1513                 }
1514         }
1515
1516         return light_freq;
1517 }
1518
1519 static int ov5640_set_bandingfilter(struct ov5640_dev *sensor)
1520 {
1521         u32 band_step60, max_band60, band_step50, max_band50, prev_vts;
1522         int ret;
1523
1524         /* read preview PCLK */
1525         ret = ov5640_get_sysclk(sensor);
1526         if (ret < 0)
1527                 return ret;
1528         if (ret == 0)
1529                 return -EINVAL;
1530         sensor->prev_sysclk = ret;
1531         /* read preview HTS */
1532         ret = ov5640_get_hts(sensor);
1533         if (ret < 0)
1534                 return ret;
1535         if (ret == 0)
1536                 return -EINVAL;
1537         sensor->prev_hts = ret;
1538
1539         /* read preview VTS */
1540         ret = ov5640_get_vts(sensor);
1541         if (ret < 0)
1542                 return ret;
1543         prev_vts = ret;
1544
1545         /* calculate banding filter */
1546         /* 60Hz */
1547         band_step60 = sensor->prev_sysclk * 100 / sensor->prev_hts * 100 / 120;
1548         ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B60_STEP, band_step60);
1549         if (ret)
1550                 return ret;
1551         if (!band_step60)
1552                 return -EINVAL;
1553         max_band60 = (int)((prev_vts - 4) / band_step60);
1554         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0D, max_band60);
1555         if (ret)
1556                 return ret;
1557
1558         /* 50Hz */
1559         band_step50 = sensor->prev_sysclk * 100 / sensor->prev_hts;
1560         ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B50_STEP, band_step50);
1561         if (ret)
1562                 return ret;
1563         if (!band_step50)
1564                 return -EINVAL;
1565         max_band50 = (int)((prev_vts - 4) / band_step50);
1566         return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0E, max_band50);
1567 }
1568
1569 static int ov5640_set_ae_target(struct ov5640_dev *sensor, int target)
1570 {
1571         /* stable in high */
1572         u32 fast_high, fast_low;
1573         int ret;
1574
1575         sensor->ae_low = target * 23 / 25;      /* 0.92 */
1576         sensor->ae_high = target * 27 / 25;     /* 1.08 */
1577
1578         fast_high = sensor->ae_high << 1;
1579         if (fast_high > 255)
1580                 fast_high = 255;
1581
1582         fast_low = sensor->ae_low >> 1;
1583
1584         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0F, sensor->ae_high);
1585         if (ret)
1586                 return ret;
1587         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL10, sensor->ae_low);
1588         if (ret)
1589                 return ret;
1590         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1B, sensor->ae_high);
1591         if (ret)
1592                 return ret;
1593         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1E, sensor->ae_low);
1594         if (ret)
1595                 return ret;
1596         ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL11, fast_high);
1597         if (ret)
1598                 return ret;
1599         return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1F, fast_low);
1600 }
1601
1602 static int ov5640_get_binning(struct ov5640_dev *sensor)
1603 {
1604         u8 temp;
1605         int ret;
1606
1607         ret = ov5640_read_reg(sensor, OV5640_REG_TIMING_TC_REG21, &temp);
1608         if (ret)
1609                 return ret;
1610
1611         return temp & BIT(0);
1612 }
1613
1614 static int ov5640_set_binning(struct ov5640_dev *sensor, bool enable)
1615 {
1616         int ret;
1617
1618         /*
1619          * TIMING TC REG21:
1620          * - [0]:       Horizontal binning enable
1621          */
1622         ret = ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
1623                              BIT(0), enable ? BIT(0) : 0);
1624         if (ret)
1625                 return ret;
1626         /*
1627          * TIMING TC REG20:
1628          * - [0]:       Undocumented, but hardcoded init sequences
1629          *              are always setting REG21/REG20 bit 0 to same value...
1630          */
1631         return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20,
1632                               BIT(0), enable ? BIT(0) : 0);
1633 }
1634
1635 static int ov5640_set_virtual_channel(struct ov5640_dev *sensor)
1636 {
1637         struct i2c_client *client = sensor->i2c_client;
1638         u8 temp, channel = virtual_channel;
1639         int ret;
1640
1641         if (channel > 3) {
1642                 dev_err(&client->dev,
1643                         "%s: wrong virtual_channel parameter, expected (0..3), got %d\n",
1644                         __func__, channel);
1645                 return -EINVAL;
1646         }
1647
1648         ret = ov5640_read_reg(sensor, OV5640_REG_DEBUG_MODE, &temp);
1649         if (ret)
1650                 return ret;
1651         temp &= ~(3 << 6);
1652         temp |= (channel << 6);
1653         return ov5640_write_reg(sensor, OV5640_REG_DEBUG_MODE, temp);
1654 }
1655
1656 static const struct ov5640_mode_info *
1657 ov5640_find_mode(struct ov5640_dev *sensor, enum ov5640_frame_rate fr,
1658                  int width, int height, bool nearest)
1659 {
1660         const struct ov5640_mode_info *mode;
1661
1662         mode = v4l2_find_nearest_size(ov5640_mode_data[fr],
1663                                       ARRAY_SIZE(ov5640_mode_data[fr]),
1664                                       hact, vact,
1665                                       width, height);
1666
1667         if (!mode ||
1668             (!nearest && (mode->hact != width || mode->vact != height)))
1669                 return NULL;
1670
1671         return mode;
1672 }
1673
1674 /*
1675  * sensor changes between scaling and subsampling, go through
1676  * exposure calculation
1677  */
1678 static int ov5640_set_mode_exposure_calc(struct ov5640_dev *sensor,
1679                                          const struct ov5640_mode_info *mode)
1680 {
1681         u32 prev_shutter, prev_gain16;
1682         u32 cap_shutter, cap_gain16;
1683         u32 cap_sysclk, cap_hts, cap_vts;
1684         u32 light_freq, cap_bandfilt, cap_maxband;
1685         u32 cap_gain16_shutter;
1686         u8 average;
1687         int ret;
1688
1689         if (!mode->reg_data)
1690                 return -EINVAL;
1691
1692         /* read preview shutter */
1693         ret = ov5640_get_exposure(sensor);
1694         if (ret < 0)
1695                 return ret;
1696         prev_shutter = ret;
1697         ret = ov5640_get_binning(sensor);
1698         if (ret < 0)
1699                 return ret;
1700         if (ret && mode->id != OV5640_MODE_720P_1280_720 &&
1701             mode->id != OV5640_MODE_1080P_1920_1080)
1702                 prev_shutter *= 2;
1703
1704         /* read preview gain */
1705         ret = ov5640_get_gain(sensor);
1706         if (ret < 0)
1707                 return ret;
1708         prev_gain16 = ret;
1709
1710         /* get average */
1711         ret = ov5640_read_reg(sensor, OV5640_REG_AVG_READOUT, &average);
1712         if (ret)
1713                 return ret;
1714
1715         /* turn off night mode for capture */
1716         ret = ov5640_set_night_mode(sensor);
1717         if (ret < 0)
1718                 return ret;
1719
1720         /* Set PLL registers for new mode */
1721         ret = ov5640_set_sclk(sensor, mode);
1722         if (ret < 0)
1723                 return ret;
1724
1725         /* Write capture setting */
1726         ret = ov5640_load_regs(sensor, mode);
1727         if (ret < 0)
1728                 return ret;
1729
1730         /* read capture VTS */
1731         ret = ov5640_get_vts(sensor);
1732         if (ret < 0)
1733                 return ret;
1734         cap_vts = ret;
1735         ret = ov5640_get_hts(sensor);
1736         if (ret < 0)
1737                 return ret;
1738         if (ret == 0)
1739                 return -EINVAL;
1740         cap_hts = ret;
1741
1742         ret = ov5640_get_sysclk(sensor);
1743         if (ret < 0)
1744                 return ret;
1745         if (ret == 0)
1746                 return -EINVAL;
1747         cap_sysclk = ret;
1748
1749         /* calculate capture banding filter */
1750         ret = ov5640_get_light_freq(sensor);
1751         if (ret < 0)
1752                 return ret;
1753         light_freq = ret;
1754
1755         if (light_freq == 60) {
1756                 /* 60Hz */
1757                 cap_bandfilt = cap_sysclk * 100 / cap_hts * 100 / 120;
1758         } else {
1759                 /* 50Hz */
1760                 cap_bandfilt = cap_sysclk * 100 / cap_hts;
1761         }
1762
1763         if (!sensor->prev_sysclk) {
1764                 ret = ov5640_get_sysclk(sensor);
1765                 if (ret < 0)
1766                         return ret;
1767                 if (ret == 0)
1768                         return -EINVAL;
1769                 sensor->prev_sysclk = ret;
1770         }
1771
1772         if (!cap_bandfilt)
1773                 return -EINVAL;
1774
1775         cap_maxband = (int)((cap_vts - 4) / cap_bandfilt);
1776
1777         /* calculate capture shutter/gain16 */
1778         if (average > sensor->ae_low && average < sensor->ae_high) {
1779                 /* in stable range */
1780                 cap_gain16_shutter =
1781                         prev_gain16 * prev_shutter *
1782                         cap_sysclk / sensor->prev_sysclk *
1783                         sensor->prev_hts / cap_hts *
1784                         sensor->ae_target / average;
1785         } else {
1786                 cap_gain16_shutter =
1787                         prev_gain16 * prev_shutter *
1788                         cap_sysclk / sensor->prev_sysclk *
1789                         sensor->prev_hts / cap_hts;
1790         }
1791
1792         /* gain to shutter */
1793         if (cap_gain16_shutter < (cap_bandfilt * 16)) {
1794                 /* shutter < 1/100 */
1795                 cap_shutter = cap_gain16_shutter / 16;
1796                 if (cap_shutter < 1)
1797                         cap_shutter = 1;
1798
1799                 cap_gain16 = cap_gain16_shutter / cap_shutter;
1800                 if (cap_gain16 < 16)
1801                         cap_gain16 = 16;
1802         } else {
1803                 if (cap_gain16_shutter > (cap_bandfilt * cap_maxband * 16)) {
1804                         /* exposure reach max */
1805                         cap_shutter = cap_bandfilt * cap_maxband;
1806                         if (!cap_shutter)
1807                                 return -EINVAL;
1808
1809                         cap_gain16 = cap_gain16_shutter / cap_shutter;
1810                 } else {
1811                         /* 1/100 < (cap_shutter = n/100) =< max */
1812                         cap_shutter =
1813                                 ((int)(cap_gain16_shutter / 16 / cap_bandfilt))
1814                                 * cap_bandfilt;
1815                         if (!cap_shutter)
1816                                 return -EINVAL;
1817
1818                         cap_gain16 = cap_gain16_shutter / cap_shutter;
1819                 }
1820         }
1821
1822         /* set capture gain */
1823         ret = ov5640_set_gain(sensor, cap_gain16);
1824         if (ret)
1825                 return ret;
1826
1827         /* write capture shutter */
1828         if (cap_shutter > (cap_vts - 4)) {
1829                 cap_vts = cap_shutter + 4;
1830                 ret = ov5640_set_vts(sensor, cap_vts);
1831                 if (ret < 0)
1832                         return ret;
1833         }
1834
1835         /* set exposure */
1836         return ov5640_set_exposure(sensor, cap_shutter);
1837 }
1838
1839 /*
1840  * if sensor changes inside scaling or subsampling
1841  * change mode directly
1842  */
1843 static int ov5640_set_mode_direct(struct ov5640_dev *sensor,
1844                                   const struct ov5640_mode_info *mode)
1845 {
1846         int ret;
1847
1848         if (!mode->reg_data)
1849                 return -EINVAL;
1850
1851         /* Set PLL registers for new mode */
1852         ret = ov5640_set_sclk(sensor, mode);
1853         if (ret < 0)
1854                 return ret;
1855
1856         /* Write capture setting */
1857         return ov5640_load_regs(sensor, mode);
1858 }
1859
1860 static int ov5640_set_mode(struct ov5640_dev *sensor)
1861 {
1862         const struct ov5640_mode_info *mode = sensor->current_mode;
1863         const struct ov5640_mode_info *orig_mode = sensor->last_mode;
1864         enum ov5640_downsize_mode dn_mode, orig_dn_mode;
1865         bool auto_gain = sensor->ctrls.auto_gain->val == 1;
1866         bool auto_exp =  sensor->ctrls.auto_exp->val == V4L2_EXPOSURE_AUTO;
1867         int ret;
1868
1869         dn_mode = mode->dn_mode;
1870         orig_dn_mode = orig_mode->dn_mode;
1871
1872         /* auto gain and exposure must be turned off when changing modes */
1873         if (auto_gain) {
1874                 ret = ov5640_set_autogain(sensor, false);
1875                 if (ret)
1876                         return ret;
1877         }
1878
1879         if (auto_exp) {
1880                 ret = ov5640_set_autoexposure(sensor, false);
1881                 if (ret)
1882                         goto restore_auto_gain;
1883         }
1884
1885         if ((dn_mode == SUBSAMPLING && orig_dn_mode == SCALING) ||
1886             (dn_mode == SCALING && orig_dn_mode == SUBSAMPLING)) {
1887                 /*
1888                  * change between subsampling and scaling
1889                  * go through exposure calculation
1890                  */
1891                 ret = ov5640_set_mode_exposure_calc(sensor, mode);
1892         } else {
1893                 /*
1894                  * change inside subsampling or scaling
1895                  * download firmware directly
1896                  */
1897                 ret = ov5640_set_mode_direct(sensor, mode);
1898         }
1899         if (ret < 0)
1900                 goto restore_auto_exp_gain;
1901
1902         /* restore auto gain and exposure */
1903         if (auto_gain)
1904                 ov5640_set_autogain(sensor, true);
1905         if (auto_exp)
1906                 ov5640_set_autoexposure(sensor, true);
1907
1908         ret = ov5640_set_binning(sensor, dn_mode != SCALING);
1909         if (ret < 0)
1910                 return ret;
1911         ret = ov5640_set_ae_target(sensor, sensor->ae_target);
1912         if (ret < 0)
1913                 return ret;
1914         ret = ov5640_get_light_freq(sensor);
1915         if (ret < 0)
1916                 return ret;
1917         ret = ov5640_set_bandingfilter(sensor);
1918         if (ret < 0)
1919                 return ret;
1920         ret = ov5640_set_virtual_channel(sensor);
1921         if (ret < 0)
1922                 return ret;
1923
1924         sensor->pending_mode_change = false;
1925         sensor->last_mode = mode;
1926
1927         return 0;
1928
1929 restore_auto_exp_gain:
1930         if (auto_exp)
1931                 ov5640_set_autoexposure(sensor, true);
1932 restore_auto_gain:
1933         if (auto_gain)
1934                 ov5640_set_autogain(sensor, true);
1935
1936         return ret;
1937 }
1938
1939 static int ov5640_set_framefmt(struct ov5640_dev *sensor,
1940                                struct v4l2_mbus_framefmt *format);
1941
1942 /* restore the last set video mode after chip power-on */
1943 static int ov5640_restore_mode(struct ov5640_dev *sensor)
1944 {
1945         int ret;
1946
1947         /* first load the initial register values */
1948         ret = ov5640_load_regs(sensor, &ov5640_mode_init_data);
1949         if (ret < 0)
1950                 return ret;
1951         sensor->last_mode = &ov5640_mode_init_data;
1952
1953         /* now restore the last capture mode */
1954         ret = ov5640_set_mode(sensor);
1955         if (ret < 0)
1956                 return ret;
1957
1958         return ov5640_set_framefmt(sensor, &sensor->fmt);
1959 }
1960
1961 static void ov5640_power(struct ov5640_dev *sensor, bool enable)
1962 {
1963         gpiod_set_value_cansleep(sensor->pwdn_gpio, enable ? 0 : 1);
1964 }
1965
1966 static void ov5640_reset(struct ov5640_dev *sensor)
1967 {
1968         if (!sensor->reset_gpio)
1969                 return;
1970
1971         gpiod_set_value_cansleep(sensor->reset_gpio, 0);
1972
1973         /* camera power cycle */
1974         ov5640_power(sensor, false);
1975         usleep_range(5000, 10000);
1976         ov5640_power(sensor, true);
1977         usleep_range(5000, 10000);
1978
1979         gpiod_set_value_cansleep(sensor->reset_gpio, 1);
1980         usleep_range(1000, 2000);
1981
1982         gpiod_set_value_cansleep(sensor->reset_gpio, 0);
1983         usleep_range(5000, 10000);
1984 }
1985
1986 static int ov5640_set_power_on(struct ov5640_dev *sensor)
1987 {
1988         struct i2c_client *client = sensor->i2c_client;
1989         int ret;
1990
1991         ret = clk_prepare_enable(sensor->xclk);
1992         if (ret) {
1993                 dev_err(&client->dev, "%s: failed to enable clock\n",
1994                         __func__);
1995                 return ret;
1996         }
1997
1998         ret = regulator_bulk_enable(OV5640_NUM_SUPPLIES,
1999                                     sensor->supplies);
2000         if (ret) {
2001                 dev_err(&client->dev, "%s: failed to enable regulators\n",
2002                         __func__);
2003                 goto xclk_off;
2004         }
2005
2006         ov5640_reset(sensor);
2007         ov5640_power(sensor, true);
2008
2009         ret = ov5640_init_slave_id(sensor);
2010         if (ret)
2011                 goto power_off;
2012
2013         return 0;
2014
2015 power_off:
2016         ov5640_power(sensor, false);
2017         regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies);
2018 xclk_off:
2019         clk_disable_unprepare(sensor->xclk);
2020         return ret;
2021 }
2022
2023 static void ov5640_set_power_off(struct ov5640_dev *sensor)
2024 {
2025         ov5640_power(sensor, false);
2026         regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies);
2027         clk_disable_unprepare(sensor->xclk);
2028 }
2029
2030 static int ov5640_set_power(struct ov5640_dev *sensor, bool on)
2031 {
2032         int ret = 0;
2033
2034         if (on) {
2035                 ret = ov5640_set_power_on(sensor);
2036                 if (ret)
2037                         return ret;
2038
2039                 ret = ov5640_restore_mode(sensor);
2040                 if (ret)
2041                         goto power_off;
2042
2043                 /* We're done here for DVP bus, while CSI-2 needs setup. */
2044                 if (sensor->ep.bus_type != V4L2_MBUS_CSI2)
2045                         return 0;
2046
2047                 /*
2048                  * Power up MIPI HS Tx and LS Rx; 2 data lanes mode
2049                  *
2050                  * 0x300e = 0x40
2051                  * [7:5] = 010  : 2 data lanes mode (see FIXME note in
2052                  *                "ov5640_set_stream_mipi()")
2053                  * [4] = 0      : Power up MIPI HS Tx
2054                  * [3] = 0      : Power up MIPI LS Rx
2055                  * [2] = 0      : MIPI interface disabled
2056                  */
2057                 ret = ov5640_write_reg(sensor,
2058                                        OV5640_REG_IO_MIPI_CTRL00, 0x40);
2059                 if (ret)
2060                         goto power_off;
2061
2062                 /*
2063                  * Gate clock and set LP11 in 'no packets mode' (idle)
2064                  *
2065                  * 0x4800 = 0x24
2066                  * [5] = 1      : Gate clock when 'no packets'
2067                  * [2] = 1      : MIPI bus in LP11 when 'no packets'
2068                  */
2069                 ret = ov5640_write_reg(sensor,
2070                                        OV5640_REG_MIPI_CTRL00, 0x24);
2071                 if (ret)
2072                         goto power_off;
2073
2074                 /*
2075                  * Set data lanes and clock in LP11 when 'sleeping'
2076                  *
2077                  * 0x3019 = 0x70
2078                  * [6] = 1      : MIPI data lane 2 in LP11 when 'sleeping'
2079                  * [5] = 1      : MIPI data lane 1 in LP11 when 'sleeping'
2080                  * [4] = 1      : MIPI clock lane in LP11 when 'sleeping'
2081                  */
2082                 ret = ov5640_write_reg(sensor,
2083                                        OV5640_REG_PAD_OUTPUT00, 0x70);
2084                 if (ret)
2085                         goto power_off;
2086
2087                 /* Give lanes some time to coax into LP11 state. */
2088                 usleep_range(500, 1000);
2089
2090         } else {
2091                 if (sensor->ep.bus_type == V4L2_MBUS_CSI2) {
2092                         /* Reset MIPI bus settings to their default values. */
2093                         ov5640_write_reg(sensor,
2094                                          OV5640_REG_IO_MIPI_CTRL00, 0x58);
2095                         ov5640_write_reg(sensor,
2096                                          OV5640_REG_MIPI_CTRL00, 0x04);
2097                         ov5640_write_reg(sensor,
2098                                          OV5640_REG_PAD_OUTPUT00, 0x00);
2099                 }
2100
2101                 ov5640_set_power_off(sensor);
2102         }
2103
2104         return 0;
2105
2106 power_off:
2107         ov5640_set_power_off(sensor);
2108         return ret;
2109 }
2110
2111 /* --------------- Subdev Operations --------------- */
2112
2113 static int ov5640_s_power(struct v4l2_subdev *sd, int on)
2114 {
2115         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2116         int ret = 0;
2117
2118         mutex_lock(&sensor->lock);
2119
2120         /*
2121          * If the power count is modified from 0 to != 0 or from != 0 to 0,
2122          * update the power state.
2123          */
2124         if (sensor->power_count == !on) {
2125                 ret = ov5640_set_power(sensor, !!on);
2126                 if (ret)
2127                         goto out;
2128         }
2129
2130         /* Update the power count. */
2131         sensor->power_count += on ? 1 : -1;
2132         WARN_ON(sensor->power_count < 0);
2133 out:
2134         mutex_unlock(&sensor->lock);
2135
2136         if (on && !ret && sensor->power_count == 1) {
2137                 /* restore controls */
2138                 ret = v4l2_ctrl_handler_setup(&sensor->ctrls.handler);
2139         }
2140
2141         return ret;
2142 }
2143
2144 static int ov5640_try_frame_interval(struct ov5640_dev *sensor,
2145                                      struct v4l2_fract *fi,
2146                                      u32 width, u32 height)
2147 {
2148         const struct ov5640_mode_info *mode;
2149         u32 minfps, maxfps, fps;
2150         int ret;
2151
2152         minfps = ov5640_framerates[OV5640_15_FPS];
2153         maxfps = ov5640_framerates[OV5640_30_FPS];
2154
2155         if (fi->numerator == 0) {
2156                 fi->denominator = maxfps;
2157                 fi->numerator = 1;
2158                 return OV5640_30_FPS;
2159         }
2160
2161         fps = DIV_ROUND_CLOSEST(fi->denominator, fi->numerator);
2162
2163         fi->numerator = 1;
2164         if (fps > maxfps)
2165                 fi->denominator = maxfps;
2166         else if (fps < minfps)
2167                 fi->denominator = minfps;
2168         else if (2 * fps >= 2 * minfps + (maxfps - minfps))
2169                 fi->denominator = maxfps;
2170         else
2171                 fi->denominator = minfps;
2172
2173         ret = (fi->denominator == minfps) ? OV5640_15_FPS : OV5640_30_FPS;
2174
2175         mode = ov5640_find_mode(sensor, ret, width, height, false);
2176         return mode ? ret : -EINVAL;
2177 }
2178
2179 static int ov5640_get_fmt(struct v4l2_subdev *sd,
2180                           struct v4l2_subdev_pad_config *cfg,
2181                           struct v4l2_subdev_format *format)
2182 {
2183         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2184         struct v4l2_mbus_framefmt *fmt;
2185
2186         if (format->pad != 0)
2187                 return -EINVAL;
2188
2189         mutex_lock(&sensor->lock);
2190
2191         if (format->which == V4L2_SUBDEV_FORMAT_TRY)
2192                 fmt = v4l2_subdev_get_try_format(&sensor->sd, cfg,
2193                                                  format->pad);
2194         else
2195                 fmt = &sensor->fmt;
2196
2197         format->format = *fmt;
2198
2199         mutex_unlock(&sensor->lock);
2200
2201         return 0;
2202 }
2203
2204 static int ov5640_try_fmt_internal(struct v4l2_subdev *sd,
2205                                    struct v4l2_mbus_framefmt *fmt,
2206                                    enum ov5640_frame_rate fr,
2207                                    const struct ov5640_mode_info **new_mode)
2208 {
2209         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2210         const struct ov5640_mode_info *mode;
2211         int i;
2212
2213         mode = ov5640_find_mode(sensor, fr, fmt->width, fmt->height, true);
2214         if (!mode)
2215                 return -EINVAL;
2216         fmt->width = mode->hact;
2217         fmt->height = mode->vact;
2218
2219         if (new_mode)
2220                 *new_mode = mode;
2221
2222         for (i = 0; i < ARRAY_SIZE(ov5640_formats); i++)
2223                 if (ov5640_formats[i].code == fmt->code)
2224                         break;
2225         if (i >= ARRAY_SIZE(ov5640_formats))
2226                 i = 0;
2227
2228         fmt->code = ov5640_formats[i].code;
2229         fmt->colorspace = ov5640_formats[i].colorspace;
2230         fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
2231         fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
2232         fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
2233
2234         return 0;
2235 }
2236
2237 static int ov5640_set_fmt(struct v4l2_subdev *sd,
2238                           struct v4l2_subdev_pad_config *cfg,
2239                           struct v4l2_subdev_format *format)
2240 {
2241         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2242         const struct ov5640_mode_info *new_mode;
2243         struct v4l2_mbus_framefmt *mbus_fmt = &format->format;
2244         int ret;
2245
2246         if (format->pad != 0)
2247                 return -EINVAL;
2248
2249         mutex_lock(&sensor->lock);
2250
2251         if (sensor->streaming) {
2252                 ret = -EBUSY;
2253                 goto out;
2254         }
2255
2256         ret = ov5640_try_fmt_internal(sd, mbus_fmt,
2257                                       sensor->current_fr, &new_mode);
2258         if (ret)
2259                 goto out;
2260
2261         if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
2262                 struct v4l2_mbus_framefmt *fmt =
2263                         v4l2_subdev_get_try_format(sd, cfg, 0);
2264
2265                 *fmt = *mbus_fmt;
2266                 goto out;
2267         }
2268
2269         if (new_mode != sensor->current_mode ||
2270             mbus_fmt->code != sensor->fmt.code) {
2271                 sensor->fmt = *mbus_fmt;
2272                 sensor->current_mode = new_mode;
2273                 sensor->pending_mode_change = true;
2274                 sensor->pending_fmt_change = true;
2275         }
2276 out:
2277         mutex_unlock(&sensor->lock);
2278         return ret;
2279 }
2280
2281 static int ov5640_set_framefmt(struct ov5640_dev *sensor,
2282                                struct v4l2_mbus_framefmt *format)
2283 {
2284         int ret = 0;
2285         bool is_rgb = false;
2286         bool is_jpeg = false;
2287         u8 val;
2288
2289         switch (format->code) {
2290         case MEDIA_BUS_FMT_UYVY8_2X8:
2291                 /* YUV422, UYVY */
2292                 val = 0x3f;
2293                 break;
2294         case MEDIA_BUS_FMT_YUYV8_2X8:
2295                 /* YUV422, YUYV */
2296                 val = 0x30;
2297                 break;
2298         case MEDIA_BUS_FMT_RGB565_2X8_LE:
2299                 /* RGB565 {g[2:0],b[4:0]},{r[4:0],g[5:3]} */
2300                 val = 0x6F;
2301                 is_rgb = true;
2302                 break;
2303         case MEDIA_BUS_FMT_RGB565_2X8_BE:
2304                 /* RGB565 {r[4:0],g[5:3]},{g[2:0],b[4:0]} */
2305                 val = 0x61;
2306                 is_rgb = true;
2307                 break;
2308         case MEDIA_BUS_FMT_JPEG_1X8:
2309                 /* YUV422, YUYV */
2310                 val = 0x30;
2311                 is_jpeg = true;
2312                 break;
2313         default:
2314                 return -EINVAL;
2315         }
2316
2317         /* FORMAT CONTROL00: YUV and RGB formatting */
2318         ret = ov5640_write_reg(sensor, OV5640_REG_FORMAT_CONTROL00, val);
2319         if (ret)
2320                 return ret;
2321
2322         /* FORMAT MUX CONTROL: ISP YUV or RGB */
2323         ret = ov5640_write_reg(sensor, OV5640_REG_ISP_FORMAT_MUX_CTRL,
2324                                is_rgb ? 0x01 : 0x00);
2325         if (ret)
2326                 return ret;
2327
2328         /*
2329          * TIMING TC REG21:
2330          * - [5]:       JPEG enable
2331          */
2332         ret = ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
2333                              BIT(5), is_jpeg ? BIT(5) : 0);
2334         if (ret)
2335                 return ret;
2336
2337         /*
2338          * SYSTEM RESET02:
2339          * - [4]:       Reset JFIFO
2340          * - [3]:       Reset SFIFO
2341          * - [2]:       Reset JPEG
2342          */
2343         ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_RESET02,
2344                              BIT(4) | BIT(3) | BIT(2),
2345                              is_jpeg ? 0 : (BIT(4) | BIT(3) | BIT(2)));
2346         if (ret)
2347                 return ret;
2348
2349         /*
2350          * CLOCK ENABLE02:
2351          * - [5]:       Enable JPEG 2x clock
2352          * - [3]:       Enable JPEG clock
2353          */
2354         return ov5640_mod_reg(sensor, OV5640_REG_SYS_CLOCK_ENABLE02,
2355                               BIT(5) | BIT(3),
2356                               is_jpeg ? (BIT(5) | BIT(3)) : 0);
2357 }
2358
2359 /*
2360  * Sensor Controls.
2361  */
2362
2363 static int ov5640_set_ctrl_hue(struct ov5640_dev *sensor, int value)
2364 {
2365         int ret;
2366
2367         if (value) {
2368                 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
2369                                      BIT(0), BIT(0));
2370                 if (ret)
2371                         return ret;
2372                 ret = ov5640_write_reg16(sensor, OV5640_REG_SDE_CTRL1, value);
2373         } else {
2374                 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(0), 0);
2375         }
2376
2377         return ret;
2378 }
2379
2380 static int ov5640_set_ctrl_contrast(struct ov5640_dev *sensor, int value)
2381 {
2382         int ret;
2383
2384         if (value) {
2385                 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
2386                                      BIT(2), BIT(2));
2387                 if (ret)
2388                         return ret;
2389                 ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL5,
2390                                        value & 0xff);
2391         } else {
2392                 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(2), 0);
2393         }
2394
2395         return ret;
2396 }
2397
2398 static int ov5640_set_ctrl_saturation(struct ov5640_dev *sensor, int value)
2399 {
2400         int ret;
2401
2402         if (value) {
2403                 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
2404                                      BIT(1), BIT(1));
2405                 if (ret)
2406                         return ret;
2407                 ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL3,
2408                                        value & 0xff);
2409                 if (ret)
2410                         return ret;
2411                 ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL4,
2412                                        value & 0xff);
2413         } else {
2414                 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(1), 0);
2415         }
2416
2417         return ret;
2418 }
2419
2420 static int ov5640_set_ctrl_white_balance(struct ov5640_dev *sensor, int awb)
2421 {
2422         int ret;
2423
2424         ret = ov5640_mod_reg(sensor, OV5640_REG_AWB_MANUAL_CTRL,
2425                              BIT(0), awb ? 0 : 1);
2426         if (ret)
2427                 return ret;
2428
2429         if (!awb) {
2430                 u16 red = (u16)sensor->ctrls.red_balance->val;
2431                 u16 blue = (u16)sensor->ctrls.blue_balance->val;
2432
2433                 ret = ov5640_write_reg16(sensor, OV5640_REG_AWB_R_GAIN, red);
2434                 if (ret)
2435                         return ret;
2436                 ret = ov5640_write_reg16(sensor, OV5640_REG_AWB_B_GAIN, blue);
2437         }
2438
2439         return ret;
2440 }
2441
2442 static int ov5640_set_ctrl_exposure(struct ov5640_dev *sensor,
2443                                     enum v4l2_exposure_auto_type auto_exposure)
2444 {
2445         struct ov5640_ctrls *ctrls = &sensor->ctrls;
2446         bool auto_exp = (auto_exposure == V4L2_EXPOSURE_AUTO);
2447         int ret = 0;
2448
2449         if (ctrls->auto_exp->is_new) {
2450                 ret = ov5640_set_autoexposure(sensor, auto_exp);
2451                 if (ret)
2452                         return ret;
2453         }
2454
2455         if (!auto_exp && ctrls->exposure->is_new) {
2456                 u16 max_exp;
2457
2458                 ret = ov5640_read_reg16(sensor, OV5640_REG_AEC_PK_VTS,
2459                                         &max_exp);
2460                 if (ret)
2461                         return ret;
2462                 ret = ov5640_get_vts(sensor);
2463                 if (ret < 0)
2464                         return ret;
2465                 max_exp += ret;
2466                 ret = 0;
2467
2468                 if (ctrls->exposure->val < max_exp)
2469                         ret = ov5640_set_exposure(sensor, ctrls->exposure->val);
2470         }
2471
2472         return ret;
2473 }
2474
2475 static int ov5640_set_ctrl_gain(struct ov5640_dev *sensor, bool auto_gain)
2476 {
2477         struct ov5640_ctrls *ctrls = &sensor->ctrls;
2478         int ret = 0;
2479
2480         if (ctrls->auto_gain->is_new) {
2481                 ret = ov5640_set_autogain(sensor, auto_gain);
2482                 if (ret)
2483                         return ret;
2484         }
2485
2486         if (!auto_gain && ctrls->gain->is_new)
2487                 ret = ov5640_set_gain(sensor, ctrls->gain->val);
2488
2489         return ret;
2490 }
2491
2492 static int ov5640_set_ctrl_test_pattern(struct ov5640_dev *sensor, int value)
2493 {
2494         return ov5640_mod_reg(sensor, OV5640_REG_PRE_ISP_TEST_SET1,
2495                               0xa4, value ? 0xa4 : 0);
2496 }
2497
2498 static int ov5640_set_ctrl_light_freq(struct ov5640_dev *sensor, int value)
2499 {
2500         int ret;
2501
2502         ret = ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL01, BIT(7),
2503                              (value == V4L2_CID_POWER_LINE_FREQUENCY_AUTO) ?
2504                              0 : BIT(7));
2505         if (ret)
2506                 return ret;
2507
2508         return ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL00, BIT(2),
2509                               (value == V4L2_CID_POWER_LINE_FREQUENCY_50HZ) ?
2510                               BIT(2) : 0);
2511 }
2512
2513 static int ov5640_set_ctrl_hflip(struct ov5640_dev *sensor, int value)
2514 {
2515         /*
2516          * If sensor is mounted upside down, mirror logic is inversed.
2517          *
2518          * Sensor is a BSI (Back Side Illuminated) one,
2519          * so image captured is physically mirrored.
2520          * This is why mirror logic is inversed in
2521          * order to cancel this mirror effect.
2522          */
2523
2524         /*
2525          * TIMING TC REG21:
2526          * - [2]:       ISP mirror
2527          * - [1]:       Sensor mirror
2528          */
2529         return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
2530                               BIT(2) | BIT(1),
2531                               (!(value ^ sensor->upside_down)) ?
2532                               (BIT(2) | BIT(1)) : 0);
2533 }
2534
2535 static int ov5640_set_ctrl_vflip(struct ov5640_dev *sensor, int value)
2536 {
2537         /* If sensor is mounted upside down, flip logic is inversed */
2538
2539         /*
2540          * TIMING TC REG20:
2541          * - [2]:       ISP vflip
2542          * - [1]:       Sensor vflip
2543          */
2544         return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20,
2545                               BIT(2) | BIT(1),
2546                               (value ^ sensor->upside_down) ?
2547                               (BIT(2) | BIT(1)) : 0);
2548 }
2549
2550 static int ov5640_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
2551 {
2552         struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
2553         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2554         int val;
2555
2556         /* v4l2_ctrl_lock() locks our own mutex */
2557
2558         switch (ctrl->id) {
2559         case V4L2_CID_AUTOGAIN:
2560                 val = ov5640_get_gain(sensor);
2561                 if (val < 0)
2562                         return val;
2563                 sensor->ctrls.gain->val = val;
2564                 break;
2565         case V4L2_CID_EXPOSURE_AUTO:
2566                 val = ov5640_get_exposure(sensor);
2567                 if (val < 0)
2568                         return val;
2569                 sensor->ctrls.exposure->val = val;
2570                 break;
2571         }
2572
2573         return 0;
2574 }
2575
2576 static int ov5640_s_ctrl(struct v4l2_ctrl *ctrl)
2577 {
2578         struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
2579         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2580         int ret;
2581
2582         /* v4l2_ctrl_lock() locks our own mutex */
2583
2584         /*
2585          * If the device is not powered up by the host driver do
2586          * not apply any controls to H/W at this time. Instead
2587          * the controls will be restored right after power-up.
2588          */
2589         if (sensor->power_count == 0)
2590                 return 0;
2591
2592         switch (ctrl->id) {
2593         case V4L2_CID_AUTOGAIN:
2594                 ret = ov5640_set_ctrl_gain(sensor, ctrl->val);
2595                 break;
2596         case V4L2_CID_EXPOSURE_AUTO:
2597                 ret = ov5640_set_ctrl_exposure(sensor, ctrl->val);
2598                 break;
2599         case V4L2_CID_AUTO_WHITE_BALANCE:
2600                 ret = ov5640_set_ctrl_white_balance(sensor, ctrl->val);
2601                 break;
2602         case V4L2_CID_HUE:
2603                 ret = ov5640_set_ctrl_hue(sensor, ctrl->val);
2604                 break;
2605         case V4L2_CID_CONTRAST:
2606                 ret = ov5640_set_ctrl_contrast(sensor, ctrl->val);
2607                 break;
2608         case V4L2_CID_SATURATION:
2609                 ret = ov5640_set_ctrl_saturation(sensor, ctrl->val);
2610                 break;
2611         case V4L2_CID_TEST_PATTERN:
2612                 ret = ov5640_set_ctrl_test_pattern(sensor, ctrl->val);
2613                 break;
2614         case V4L2_CID_POWER_LINE_FREQUENCY:
2615                 ret = ov5640_set_ctrl_light_freq(sensor, ctrl->val);
2616                 break;
2617         case V4L2_CID_HFLIP:
2618                 ret = ov5640_set_ctrl_hflip(sensor, ctrl->val);
2619                 break;
2620         case V4L2_CID_VFLIP:
2621                 ret = ov5640_set_ctrl_vflip(sensor, ctrl->val);
2622                 break;
2623         default:
2624                 ret = -EINVAL;
2625                 break;
2626         }
2627
2628         return ret;
2629 }
2630
2631 static const struct v4l2_ctrl_ops ov5640_ctrl_ops = {
2632         .g_volatile_ctrl = ov5640_g_volatile_ctrl,
2633         .s_ctrl = ov5640_s_ctrl,
2634 };
2635
2636 static const char * const test_pattern_menu[] = {
2637         "Disabled",
2638         "Color bars",
2639 };
2640
2641 static int ov5640_init_controls(struct ov5640_dev *sensor)
2642 {
2643         const struct v4l2_ctrl_ops *ops = &ov5640_ctrl_ops;
2644         struct ov5640_ctrls *ctrls = &sensor->ctrls;
2645         struct v4l2_ctrl_handler *hdl = &ctrls->handler;
2646         int ret;
2647
2648         v4l2_ctrl_handler_init(hdl, 32);
2649
2650         /* we can use our own mutex for the ctrl lock */
2651         hdl->lock = &sensor->lock;
2652
2653         /* Auto/manual white balance */
2654         ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops,
2655                                            V4L2_CID_AUTO_WHITE_BALANCE,
2656                                            0, 1, 1, 1);
2657         ctrls->blue_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BLUE_BALANCE,
2658                                                 0, 4095, 1, 0);
2659         ctrls->red_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_RED_BALANCE,
2660                                                0, 4095, 1, 0);
2661         /* Auto/manual exposure */
2662         ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops,
2663                                                  V4L2_CID_EXPOSURE_AUTO,
2664                                                  V4L2_EXPOSURE_MANUAL, 0,
2665                                                  V4L2_EXPOSURE_AUTO);
2666         ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
2667                                             0, 65535, 1, 0);
2668         /* Auto/manual gain */
2669         ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTOGAIN,
2670                                              0, 1, 1, 1);
2671         ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN,
2672                                         0, 1023, 1, 0);
2673
2674         ctrls->saturation = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION,
2675                                               0, 255, 1, 64);
2676         ctrls->hue = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HUE,
2677                                        0, 359, 1, 0);
2678         ctrls->contrast = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST,
2679                                             0, 255, 1, 0);
2680         ctrls->test_pattern =
2681                 v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
2682                                              ARRAY_SIZE(test_pattern_menu) - 1,
2683                                              0, 0, test_pattern_menu);
2684         ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP,
2685                                          0, 1, 1, 0);
2686         ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP,
2687                                          0, 1, 1, 0);
2688
2689         ctrls->light_freq =
2690                 v4l2_ctrl_new_std_menu(hdl, ops,
2691                                        V4L2_CID_POWER_LINE_FREQUENCY,
2692                                        V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
2693                                        V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
2694
2695         if (hdl->error) {
2696                 ret = hdl->error;
2697                 goto free_ctrls;
2698         }
2699
2700         ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
2701         ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
2702
2703         v4l2_ctrl_auto_cluster(3, &ctrls->auto_wb, 0, false);
2704         v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true);
2705         v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp, 1, true);
2706
2707         sensor->sd.ctrl_handler = hdl;
2708         return 0;
2709
2710 free_ctrls:
2711         v4l2_ctrl_handler_free(hdl);
2712         return ret;
2713 }
2714
2715 static int ov5640_enum_frame_size(struct v4l2_subdev *sd,
2716                                   struct v4l2_subdev_pad_config *cfg,
2717                                   struct v4l2_subdev_frame_size_enum *fse)
2718 {
2719         if (fse->pad != 0)
2720                 return -EINVAL;
2721         if (fse->index >= OV5640_NUM_MODES)
2722                 return -EINVAL;
2723
2724         fse->min_width =
2725                 ov5640_mode_data[0][fse->index].hact;
2726         fse->max_width = fse->min_width;
2727         fse->min_height =
2728                 ov5640_mode_data[0][fse->index].vact;
2729         fse->max_height = fse->min_height;
2730
2731         return 0;
2732 }
2733
2734 static int ov5640_enum_frame_interval(
2735         struct v4l2_subdev *sd,
2736         struct v4l2_subdev_pad_config *cfg,
2737         struct v4l2_subdev_frame_interval_enum *fie)
2738 {
2739         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2740         struct v4l2_fract tpf;
2741         int ret;
2742
2743         if (fie->pad != 0)
2744                 return -EINVAL;
2745         if (fie->index >= OV5640_NUM_FRAMERATES)
2746                 return -EINVAL;
2747
2748         tpf.numerator = 1;
2749         tpf.denominator = ov5640_framerates[fie->index];
2750
2751         ret = ov5640_try_frame_interval(sensor, &tpf,
2752                                         fie->width, fie->height);
2753         if (ret < 0)
2754                 return -EINVAL;
2755
2756         fie->interval = tpf;
2757         return 0;
2758 }
2759
2760 static int ov5640_g_frame_interval(struct v4l2_subdev *sd,
2761                                    struct v4l2_subdev_frame_interval *fi)
2762 {
2763         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2764
2765         mutex_lock(&sensor->lock);
2766         fi->interval = sensor->frame_interval;
2767         mutex_unlock(&sensor->lock);
2768
2769         return 0;
2770 }
2771
2772 static int ov5640_s_frame_interval(struct v4l2_subdev *sd,
2773                                    struct v4l2_subdev_frame_interval *fi)
2774 {
2775         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2776         const struct ov5640_mode_info *mode;
2777         int frame_rate, ret = 0;
2778
2779         if (fi->pad != 0)
2780                 return -EINVAL;
2781
2782         mutex_lock(&sensor->lock);
2783
2784         if (sensor->streaming) {
2785                 ret = -EBUSY;
2786                 goto out;
2787         }
2788
2789         mode = sensor->current_mode;
2790
2791         frame_rate = ov5640_try_frame_interval(sensor, &fi->interval,
2792                                                mode->hact, mode->vact);
2793         if (frame_rate < 0)
2794                 frame_rate = OV5640_15_FPS;
2795
2796         sensor->current_fr = frame_rate;
2797         sensor->frame_interval = fi->interval;
2798         mode = ov5640_find_mode(sensor, frame_rate, mode->hact,
2799                                 mode->vact, true);
2800         if (!mode) {
2801                 ret = -EINVAL;
2802                 goto out;
2803         }
2804
2805         if (mode != sensor->current_mode) {
2806                 sensor->current_mode = mode;
2807                 sensor->pending_mode_change = true;
2808         }
2809 out:
2810         mutex_unlock(&sensor->lock);
2811         return ret;
2812 }
2813
2814 static int ov5640_enum_mbus_code(struct v4l2_subdev *sd,
2815                                  struct v4l2_subdev_pad_config *cfg,
2816                                  struct v4l2_subdev_mbus_code_enum *code)
2817 {
2818         if (code->pad != 0)
2819                 return -EINVAL;
2820         if (code->index >= ARRAY_SIZE(ov5640_formats))
2821                 return -EINVAL;
2822
2823         code->code = ov5640_formats[code->index].code;
2824         return 0;
2825 }
2826
2827 static int ov5640_s_stream(struct v4l2_subdev *sd, int enable)
2828 {
2829         struct ov5640_dev *sensor = to_ov5640_dev(sd);
2830         int ret = 0;
2831
2832         mutex_lock(&sensor->lock);
2833
2834         if (sensor->streaming == !enable) {
2835                 if (enable && sensor->pending_mode_change) {
2836                         ret = ov5640_set_mode(sensor);
2837                         if (ret)
2838                                 goto out;
2839                 }
2840
2841                 if (enable && sensor->pending_fmt_change) {
2842                         ret = ov5640_set_framefmt(sensor, &sensor->fmt);
2843                         if (ret)
2844                                 goto out;
2845                         sensor->pending_fmt_change = false;
2846                 }
2847
2848                 if (sensor->ep.bus_type == V4L2_MBUS_CSI2)
2849                         ret = ov5640_set_stream_mipi(sensor, enable);
2850                 else
2851                         ret = ov5640_set_stream_dvp(sensor, enable);
2852
2853                 if (!ret)
2854                         sensor->streaming = enable;
2855         }
2856 out:
2857         mutex_unlock(&sensor->lock);
2858         return ret;
2859 }
2860
2861 static const struct v4l2_subdev_core_ops ov5640_core_ops = {
2862         .s_power = ov5640_s_power,
2863 };
2864
2865 static const struct v4l2_subdev_video_ops ov5640_video_ops = {
2866         .g_frame_interval = ov5640_g_frame_interval,
2867         .s_frame_interval = ov5640_s_frame_interval,
2868         .s_stream = ov5640_s_stream,
2869 };
2870
2871 static const struct v4l2_subdev_pad_ops ov5640_pad_ops = {
2872         .enum_mbus_code = ov5640_enum_mbus_code,
2873         .get_fmt = ov5640_get_fmt,
2874         .set_fmt = ov5640_set_fmt,
2875         .enum_frame_size = ov5640_enum_frame_size,
2876         .enum_frame_interval = ov5640_enum_frame_interval,
2877 };
2878
2879 static const struct v4l2_subdev_ops ov5640_subdev_ops = {
2880         .core = &ov5640_core_ops,
2881         .video = &ov5640_video_ops,
2882         .pad = &ov5640_pad_ops,
2883 };
2884
2885 static int ov5640_get_regulators(struct ov5640_dev *sensor)
2886 {
2887         int i;
2888
2889         for (i = 0; i < OV5640_NUM_SUPPLIES; i++)
2890                 sensor->supplies[i].supply = ov5640_supply_name[i];
2891
2892         return devm_regulator_bulk_get(&sensor->i2c_client->dev,
2893                                        OV5640_NUM_SUPPLIES,
2894                                        sensor->supplies);
2895 }
2896
2897 static int ov5640_check_chip_id(struct ov5640_dev *sensor)
2898 {
2899         struct i2c_client *client = sensor->i2c_client;
2900         int ret = 0;
2901         u16 chip_id;
2902
2903         ret = ov5640_set_power_on(sensor);
2904         if (ret)
2905                 return ret;
2906
2907         ret = ov5640_read_reg16(sensor, OV5640_REG_CHIP_ID, &chip_id);
2908         if (ret) {
2909                 dev_err(&client->dev, "%s: failed to read chip identifier\n",
2910                         __func__);
2911                 goto power_off;
2912         }
2913
2914         if (chip_id != 0x5640) {
2915                 dev_err(&client->dev, "%s: wrong chip identifier, expected 0x5640, got 0x%x\n",
2916                         __func__, chip_id);
2917                 ret = -ENXIO;
2918         }
2919
2920 power_off:
2921         ov5640_set_power_off(sensor);
2922         return ret;
2923 }
2924
2925 static int ov5640_probe(struct i2c_client *client,
2926                         const struct i2c_device_id *id)
2927 {
2928         struct device *dev = &client->dev;
2929         struct fwnode_handle *endpoint;
2930         struct ov5640_dev *sensor;
2931         struct v4l2_mbus_framefmt *fmt;
2932         u32 rotation;
2933         int ret;
2934
2935         sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
2936         if (!sensor)
2937                 return -ENOMEM;
2938
2939         sensor->i2c_client = client;
2940
2941         /*
2942          * default init sequence initialize sensor to
2943          * YUV422 UYVY VGA@30fps
2944          */
2945         fmt = &sensor->fmt;
2946         fmt->code = MEDIA_BUS_FMT_UYVY8_2X8;
2947         fmt->colorspace = V4L2_COLORSPACE_SRGB;
2948         fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
2949         fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
2950         fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
2951         fmt->width = 640;
2952         fmt->height = 480;
2953         fmt->field = V4L2_FIELD_NONE;
2954         sensor->frame_interval.numerator = 1;
2955         sensor->frame_interval.denominator = ov5640_framerates[OV5640_30_FPS];
2956         sensor->current_fr = OV5640_30_FPS;
2957         sensor->current_mode =
2958                 &ov5640_mode_data[OV5640_30_FPS][OV5640_MODE_VGA_640_480];
2959         sensor->last_mode = sensor->current_mode;
2960
2961         sensor->ae_target = 52;
2962
2963         /* optional indication of physical rotation of sensor */
2964         ret = fwnode_property_read_u32(dev_fwnode(&client->dev), "rotation",
2965                                        &rotation);
2966         if (!ret) {
2967                 switch (rotation) {
2968                 case 180:
2969                         sensor->upside_down = true;
2970                         /* fall through */
2971                 case 0:
2972                         break;
2973                 default:
2974                         dev_warn(dev, "%u degrees rotation is not supported, ignoring...\n",
2975                                  rotation);
2976                 }
2977         }
2978
2979         endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev),
2980                                                   NULL);
2981         if (!endpoint) {
2982                 dev_err(dev, "endpoint node not found\n");
2983                 return -EINVAL;
2984         }
2985
2986         ret = v4l2_fwnode_endpoint_parse(endpoint, &sensor->ep);
2987         fwnode_handle_put(endpoint);
2988         if (ret) {
2989                 dev_err(dev, "Could not parse endpoint\n");
2990                 return ret;
2991         }
2992
2993         /* get system clock (xclk) */
2994         sensor->xclk = devm_clk_get(dev, "xclk");
2995         if (IS_ERR(sensor->xclk)) {
2996                 dev_err(dev, "failed to get xclk\n");
2997                 return PTR_ERR(sensor->xclk);
2998         }
2999
3000         sensor->xclk_freq = clk_get_rate(sensor->xclk);
3001         if (sensor->xclk_freq < OV5640_XCLK_MIN ||
3002             sensor->xclk_freq > OV5640_XCLK_MAX) {
3003                 dev_err(dev, "xclk frequency out of range: %d Hz\n",
3004                         sensor->xclk_freq);
3005                 return -EINVAL;
3006         }
3007
3008         /* request optional power down pin */
3009         sensor->pwdn_gpio = devm_gpiod_get_optional(dev, "powerdown",
3010                                                     GPIOD_OUT_HIGH);
3011         /* request optional reset pin */
3012         sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset",
3013                                                      GPIOD_OUT_HIGH);
3014
3015         v4l2_i2c_subdev_init(&sensor->sd, client, &ov5640_subdev_ops);
3016
3017         sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
3018         sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
3019         sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
3020         ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
3021         if (ret)
3022                 return ret;
3023
3024         ret = ov5640_get_regulators(sensor);
3025         if (ret)
3026                 return ret;
3027
3028         mutex_init(&sensor->lock);
3029
3030         ret = ov5640_check_chip_id(sensor);
3031         if (ret)
3032                 goto entity_cleanup;
3033
3034         ret = ov5640_init_controls(sensor);
3035         if (ret)
3036                 goto entity_cleanup;
3037
3038         ret = v4l2_async_register_subdev(&sensor->sd);
3039         if (ret)
3040                 goto free_ctrls;
3041
3042         return 0;
3043
3044 free_ctrls:
3045         v4l2_ctrl_handler_free(&sensor->ctrls.handler);
3046 entity_cleanup:
3047         mutex_destroy(&sensor->lock);
3048         media_entity_cleanup(&sensor->sd.entity);
3049         return ret;
3050 }
3051
3052 static int ov5640_remove(struct i2c_client *client)
3053 {
3054         struct v4l2_subdev *sd = i2c_get_clientdata(client);
3055         struct ov5640_dev *sensor = to_ov5640_dev(sd);
3056
3057         v4l2_async_unregister_subdev(&sensor->sd);
3058         mutex_destroy(&sensor->lock);
3059         media_entity_cleanup(&sensor->sd.entity);
3060         v4l2_ctrl_handler_free(&sensor->ctrls.handler);
3061
3062         return 0;
3063 }
3064
3065 static const struct i2c_device_id ov5640_id[] = {
3066         {"ov5640", 0},
3067         {},
3068 };
3069 MODULE_DEVICE_TABLE(i2c, ov5640_id);
3070
3071 static const struct of_device_id ov5640_dt_ids[] = {
3072         { .compatible = "ovti,ov5640" },
3073         { /* sentinel */ }
3074 };
3075 MODULE_DEVICE_TABLE(of, ov5640_dt_ids);
3076
3077 static struct i2c_driver ov5640_i2c_driver = {
3078         .driver = {
3079                 .name  = "ov5640",
3080                 .of_match_table = ov5640_dt_ids,
3081         },
3082         .id_table = ov5640_id,
3083         .probe    = ov5640_probe,
3084         .remove   = ov5640_remove,
3085 };
3086
3087 module_i2c_driver(ov5640_i2c_driver);
3088
3089 MODULE_DESCRIPTION("OV5640 MIPI Camera Subdev Driver");
3090 MODULE_LICENSE("GPL");