linux-imx

/*

 * A V4L2 driver for OmniVision OV5647 cameras.

 *

 * Based on Samsung S5K6AAFX SXGA 1/6" 1.3M CMOS Image Sensor driver

 * Copyright (C) 2011 Sylwester Nawrocki <s.nawrocki@samsung.com>

 *

 * Based on Omnivision OV7670 Camera Driver

 * Copyright (C) 2006-7 Jonathan Corbet <corbet@lwn.net>

 *

 * Copyright (C) 2016, Synopsys, Inc.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License as

 * published by the Free Software Foundation version 2.

 *

 * This program is distributed .as is. WITHOUT ANY WARRANTY of any

 * kind, whether express or implied; without even the implied warranty

 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

​

#include <linux/clk.h>

#include <linux/delay.h>

#include <linux/i2c.h>

#include <linux/init.h>

#include <linux/io.h>

#include <linux/module.h>

#include <linux/of_graph.h>

#include <linux/slab.h>

#include <linux/videodev2.h>

#include <media/v4l2-device.h>

#include <media/v4l2-fwnode.h>

#include <media/v4l2-image-sizes.h>

#include <media/v4l2-mediabus.h>

​

#define SENSOR_NAME "ov5647"

​

#define MIPI_CTRL00_CLOCK_LANE_GATE     BIT(5)

#define MIPI_CTRL00_BUS_IDLE            BIT(2)

#define MIPI_CTRL00_CLOCK_LANE_DISABLE      BIT(0)

​

#define OV5647_SW_STANDBY       0x0100

#define OV5647_SW_RESET         0x0103

#define OV5647_REG_CHIPID_H     0x300A

#define OV5647_REG_CHIPID_L     0x300B

#define OV5640_REG_PAD_OUT      0x300D

#define OV5647_REG_FRAME_OFF_NUMBER 0x4202

#define OV5647_REG_MIPI_CTRL00      0x4800

#define OV5647_REG_MIPI_CTRL14      0x4814

​

#define REG_TERM 0xfffe

#define VAL_TERM 0xfe

#define REG_DLY  0xffff

​

#define OV5647_ROW_START        0x01

#define OV5647_ROW_START_MIN        0

#define OV5647_ROW_START_MAX        2004

#define OV5647_ROW_START_DEF        54

​

#define OV5647_COLUMN_START     0x02

#define OV5647_COLUMN_START_MIN     0

#define OV5647_COLUMN_START_MAX     2750

#define OV5647_COLUMN_START_DEF     16

​

#define OV5647_WINDOW_HEIGHT        0x03

#define OV5647_WINDOW_HEIGHT_MIN    2

#define OV5647_WINDOW_HEIGHT_MAX    2006

#define OV5647_WINDOW_HEIGHT_DEF    1944

​

#define OV5647_WINDOW_WIDTH     0x04

#define OV5647_WINDOW_WIDTH_MIN     2

#define OV5647_WINDOW_WIDTH_MAX     2752

#define OV5647_WINDOW_WIDTH_DEF     2592

​

struct regval_list {

    u16 addr;

    u8 data;

};

​

struct ov5647 {

    struct v4l2_subdev      sd;

    struct media_pad        pad;

    struct mutex            lock;

    struct v4l2_mbus_framefmt   format;

    unsigned int            width;

    unsigned int            height;

    int             power_count;

    struct clk          *xclk;

};

​

static inline struct ov5647 *to_state(struct v4l2_subdev *sd)

{