linux-imx

// SPDX-License-Identifier: GPL-2.0

// Copyright (c) 2017 Intel Corporation.

​

#include <linux/acpi.h>

#include <linux/i2c.h>

#include <linux/module.h>

#include <linux/pm_runtime.h>

#include <media/v4l2-ctrls.h>

#include <media/v4l2-device.h>

​

#define OV5670_REG_CHIP_ID      0x300a

#define OV5670_CHIP_ID          0x005670

​

#define OV5670_REG_MODE_SELECT      0x0100

#define OV5670_MODE_STANDBY     0x00

#define OV5670_MODE_STREAMING       0x01

​

#define OV5670_REG_SOFTWARE_RST     0x0103

#define OV5670_SOFTWARE_RST     0x01

​

/* vertical-timings from sensor */

#define OV5670_REG_VTS          0x380e

#define OV5670_VTS_30FPS        0x0808 /* default for 30 fps */

#define OV5670_VTS_MAX          0xffff

​

/* horizontal-timings from sensor */

#define OV5670_REG_HTS          0x380c

​

/*

 * Pixels-per-line(PPL) = Time-per-line * pixel-rate

 * In OV5670, Time-per-line = HTS/SCLK.

 * HTS is fixed for all resolutions, not recommended to change.

 */

#define OV5670_FIXED_PPL        2724    /* Pixels per line */

​

/* Exposure controls from sensor */

#define OV5670_REG_EXPOSURE     0x3500

#define OV5670_EXPOSURE_MIN     4

#define OV5670_EXPOSURE_STEP        1

​

/* Analog gain controls from sensor */

#define OV5670_REG_ANALOG_GAIN      0x3508

#define ANALOG_GAIN_MIN         0

#define ANALOG_GAIN_MAX         8191

#define ANALOG_GAIN_STEP        1

#define ANALOG_GAIN_DEFAULT     128

​

/* Digital gain controls from sensor */

#define OV5670_REG_R_DGTL_GAIN      0x5032

#define OV5670_REG_G_DGTL_GAIN      0x5034

#define OV5670_REG_B_DGTL_GAIN      0x5036

#define OV5670_DGTL_GAIN_MIN        0

#define OV5670_DGTL_GAIN_MAX        4095

#define OV5670_DGTL_GAIN_STEP       1

#define OV5670_DGTL_GAIN_DEFAULT    1024

​

/* Test Pattern Control */

#define OV5670_REG_TEST_PATTERN     0x4303

#define OV5670_TEST_PATTERN_ENABLE  BIT(3)

#define OV5670_REG_TEST_PATTERN_CTRL    0x4320

​

#define OV5670_REG_VALUE_08BIT      1

#define OV5670_REG_VALUE_16BIT      2

#define OV5670_REG_VALUE_24BIT      3

​

/* Initial number of frames to skip to avoid possible garbage */

#define OV5670_NUM_OF_SKIP_FRAMES   2

​

struct ov5670_reg {

    u16 address;

    u8 val;

};

​

struct ov5670_reg_list {

    u32 num_of_regs;

    const struct ov5670_reg *regs;

};

​

struct ov5670_link_freq_config {

    u32 pixel_rate;

    const struct ov5670_reg_list reg_list;

};

​

struct ov5670_mode {

    /* Frame width in pixels */

    u32 width;

​

    /* Frame height in pixels */

    u32 height;

​

    /* Default vertical timining size */

    u32 vts_def;