1528 строки
36 KiB
C
1528 строки
36 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* OmniVision ov9282 Camera Sensor Driver
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*
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* Copyright (C) 2021 Intel Corporation
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*/
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#include <asm/unaligned.h>
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <linux/regulator/consumer.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-fwnode.h>
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#include <media/v4l2-subdev.h>
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/* Streaming Mode */
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#define OV9282_REG_MODE_SELECT 0x0100
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#define OV9282_MODE_STANDBY 0x00
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#define OV9282_MODE_STREAMING 0x01
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#define OV9282_REG_PLL_CTRL_0D 0x030d
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#define OV9282_PLL_CTRL_0D_RAW8 0x60
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#define OV9282_PLL_CTRL_0D_RAW10 0x50
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#define OV9282_REG_TIMING_HTS 0x380c
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#define OV9282_TIMING_HTS_MAX 0x7fff
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/* Lines per frame */
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#define OV9282_REG_LPFR 0x380e
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/* Chip ID */
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#define OV9282_REG_ID 0x300a
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#define OV9282_ID 0x9281
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/* Exposure control */
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#define OV9282_REG_EXPOSURE 0x3500
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#define OV9282_EXPOSURE_MIN 1
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#define OV9282_EXPOSURE_OFFSET 12
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#define OV9282_EXPOSURE_STEP 1
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#define OV9282_EXPOSURE_DEFAULT 0x0282
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/* Analog gain control */
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#define OV9282_REG_AGAIN 0x3509
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#define OV9282_AGAIN_MIN 0x10
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#define OV9282_AGAIN_MAX 0xff
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#define OV9282_AGAIN_STEP 1
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#define OV9282_AGAIN_DEFAULT 0x10
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/* Group hold register */
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#define OV9282_REG_HOLD 0x3308
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#define OV9282_REG_ANA_CORE_2 0x3662
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#define OV9282_ANA_CORE2_RAW8 0x07
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#define OV9282_ANA_CORE2_RAW10 0x05
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#define OV9282_REG_TIMING_FORMAT_1 0x3820
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#define OV9282_REG_TIMING_FORMAT_2 0x3821
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#define OV9282_FLIP_BIT BIT(2)
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#define OV9282_REG_MIPI_CTRL00 0x4800
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#define OV9282_GATED_CLOCK BIT(5)
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/* Input clock rate */
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#define OV9282_INCLK_RATE 24000000
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/* CSI2 HW configuration */
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#define OV9282_LINK_FREQ 400000000
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#define OV9282_NUM_DATA_LANES 2
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/* Pixel rate */
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#define OV9282_PIXEL_RATE_10BIT (OV9282_LINK_FREQ * 2 * \
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OV9282_NUM_DATA_LANES / 10)
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#define OV9282_PIXEL_RATE_8BIT (OV9282_LINK_FREQ * 2 * \
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OV9282_NUM_DATA_LANES / 8)
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/*
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* OV9282 native and active pixel array size.
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* 8 dummy rows/columns on each edge of a 1280x800 active array
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*/
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#define OV9282_NATIVE_WIDTH 1296U
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#define OV9282_NATIVE_HEIGHT 816U
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#define OV9282_PIXEL_ARRAY_LEFT 8U
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#define OV9282_PIXEL_ARRAY_TOP 8U
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#define OV9282_PIXEL_ARRAY_WIDTH 1280U
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#define OV9282_PIXEL_ARRAY_HEIGHT 800U
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#define OV9282_REG_MIN 0x00
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#define OV9282_REG_MAX 0xfffff
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static const char * const ov9282_supply_names[] = {
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"avdd", /* Analog power */
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"dovdd", /* Digital I/O power */
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"dvdd", /* Digital core power */
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};
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#define OV9282_NUM_SUPPLIES ARRAY_SIZE(ov9282_supply_names)
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/**
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* struct ov9282_reg - ov9282 sensor register
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* @address: Register address
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* @val: Register value
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*/
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struct ov9282_reg {
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u16 address;
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u8 val;
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};
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/**
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* struct ov9282_reg_list - ov9282 sensor register list
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* @num_of_regs: Number of registers in the list
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* @regs: Pointer to register list
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*/
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struct ov9282_reg_list {
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u32 num_of_regs;
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const struct ov9282_reg *regs;
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};
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/**
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* struct ov9282_mode - ov9282 sensor mode structure
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* @width: Frame width
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* @height: Frame height
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* @hblank_min: Minimum horizontal blanking in lines for non-continuous[0] and
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* continuous[1] clock modes
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* @vblank: Vertical blanking in lines
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* @vblank_min: Minimum vertical blanking in lines
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* @vblank_max: Maximum vertical blanking in lines
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* @link_freq_idx: Link frequency index
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* @crop: on-sensor cropping for this mode
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* @reg_list: Register list for sensor mode
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*/
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struct ov9282_mode {
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u32 width;
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u32 height;
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u32 hblank_min[2];
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u32 vblank;
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u32 vblank_min;
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u32 vblank_max;
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u32 link_freq_idx;
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struct v4l2_rect crop;
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struct ov9282_reg_list reg_list;
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};
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/**
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* struct ov9282 - ov9282 sensor device structure
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* @dev: Pointer to generic device
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* @sd: V4L2 sub-device
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* @pad: Media pad. Only one pad supported
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* @reset_gpio: Sensor reset gpio
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* @inclk: Sensor input clock
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* @supplies: Regulator supplies for the sensor
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* @ctrl_handler: V4L2 control handler
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* @link_freq_ctrl: Pointer to link frequency control
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* @hblank_ctrl: Pointer to horizontal blanking control
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* @vblank_ctrl: Pointer to vertical blanking control
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* @exp_ctrl: Pointer to exposure control
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* @again_ctrl: Pointer to analog gain control
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* @pixel_rate: Pointer to pixel rate control
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* @vblank: Vertical blanking in lines
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* @noncontinuous_clock: Selection of CSI2 noncontinuous clock mode
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* @cur_mode: Pointer to current selected sensor mode
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* @code: Mbus code currently selected
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* @mutex: Mutex for serializing sensor controls
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* @streaming: Flag indicating streaming state
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*/
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struct ov9282 {
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struct device *dev;
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struct v4l2_subdev sd;
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struct media_pad pad;
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struct gpio_desc *reset_gpio;
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struct clk *inclk;
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struct regulator_bulk_data supplies[OV9282_NUM_SUPPLIES];
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struct v4l2_ctrl_handler ctrl_handler;
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struct v4l2_ctrl *link_freq_ctrl;
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struct v4l2_ctrl *hblank_ctrl;
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struct v4l2_ctrl *vblank_ctrl;
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struct {
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struct v4l2_ctrl *exp_ctrl;
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struct v4l2_ctrl *again_ctrl;
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};
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struct v4l2_ctrl *pixel_rate;
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u32 vblank;
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bool noncontinuous_clock;
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const struct ov9282_mode *cur_mode;
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u32 code;
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struct mutex mutex;
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bool streaming;
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};
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static const s64 link_freq[] = {
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OV9282_LINK_FREQ,
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};
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/*
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* Common registers
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*
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* Note: Do NOT include a software reset (0x0103, 0x01) in any of these
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* register arrays as some settings are written as part of ov9282_power_on,
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* and the reset will clear them.
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*/
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static const struct ov9282_reg common_regs[] = {
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{0x0302, 0x32},
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{0x030e, 0x02},
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{0x3001, 0x00},
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{0x3004, 0x00},
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{0x3005, 0x00},
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{0x3006, 0x04},
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{0x3011, 0x0a},
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{0x3013, 0x18},
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{0x301c, 0xf0},
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{0x3022, 0x01},
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{0x3030, 0x10},
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{0x3039, 0x32},
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{0x303a, 0x00},
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{0x3503, 0x08},
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{0x3505, 0x8c},
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{0x3507, 0x03},
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{0x3508, 0x00},
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{0x3610, 0x80},
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{0x3611, 0xa0},
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{0x3620, 0x6e},
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{0x3632, 0x56},
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{0x3633, 0x78},
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{0x3666, 0x00},
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{0x366f, 0x5a},
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{0x3680, 0x84},
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{0x3712, 0x80},
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{0x372d, 0x22},
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{0x3731, 0x80},
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{0x3732, 0x30},
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{0x377d, 0x22},
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{0x3788, 0x02},
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{0x3789, 0xa4},
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{0x378a, 0x00},
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{0x378b, 0x4a},
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{0x3799, 0x20},
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{0x3881, 0x42},
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{0x38a8, 0x02},
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{0x38a9, 0x80},
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{0x38b1, 0x00},
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{0x38c4, 0x00},
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{0x38c5, 0xc0},
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{0x38c6, 0x04},
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{0x38c7, 0x80},
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{0x3920, 0xff},
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{0x4010, 0x40},
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{0x4043, 0x40},
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{0x4307, 0x30},
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{0x4317, 0x00},
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{0x4501, 0x00},
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{0x450a, 0x08},
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{0x4601, 0x04},
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{0x470f, 0x00},
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{0x4f07, 0x00},
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{0x5000, 0x9f},
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{0x5001, 0x00},
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{0x5e00, 0x00},
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{0x5d00, 0x07},
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{0x5d01, 0x00},
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{0x0101, 0x01},
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{0x1000, 0x03},
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{0x5a08, 0x84},
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};
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static struct ov9282_reg_list common_regs_list = {
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.num_of_regs = ARRAY_SIZE(common_regs),
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.regs = common_regs,
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};
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#define MODE_1280_800 0
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#define MODE_1280_720 1
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#define MODE_640_400 2
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#define DEFAULT_MODE MODE_1280_720
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/* Sensor mode registers */
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static const struct ov9282_reg mode_1280x800_regs[] = {
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{0x3778, 0x00},
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{0x3800, 0x00},
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{0x3801, 0x00},
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{0x3802, 0x00},
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{0x3803, 0x00},
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{0x3804, 0x05},
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{0x3805, 0x0f},
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{0x3806, 0x03},
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{0x3807, 0x2f},
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{0x3808, 0x05},
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{0x3809, 0x00},
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{0x380a, 0x03},
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{0x380b, 0x20},
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{0x3810, 0x00},
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{0x3811, 0x08},
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{0x3812, 0x00},
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{0x3813, 0x08},
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{0x3814, 0x11},
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{0x3815, 0x11},
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{0x3820, 0x40},
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{0x3821, 0x00},
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{0x4003, 0x40},
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{0x4008, 0x04},
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{0x4009, 0x0b},
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{0x400c, 0x00},
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{0x400d, 0x07},
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{0x4507, 0x00},
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{0x4509, 0x00},
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};
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static const struct ov9282_reg mode_1280x720_regs[] = {
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{0x3778, 0x00},
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{0x3800, 0x00},
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{0x3801, 0x00},
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{0x3802, 0x00},
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{0x3803, 0x00},
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{0x3804, 0x05},
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{0x3805, 0x0f},
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{0x3806, 0x02},
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{0x3807, 0xdf},
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{0x3808, 0x05},
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{0x3809, 0x00},
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{0x380a, 0x02},
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{0x380b, 0xd0},
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{0x3810, 0x00},
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{0x3811, 0x08},
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{0x3812, 0x00},
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{0x3813, 0x08},
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{0x3814, 0x11},
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{0x3815, 0x11},
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{0x3820, 0x3c},
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{0x3821, 0x84},
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{0x4003, 0x40},
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{0x4008, 0x02},
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{0x4009, 0x05},
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{0x400c, 0x00},
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{0x400d, 0x03},
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{0x4507, 0x00},
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{0x4509, 0x80},
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};
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static const struct ov9282_reg mode_640x400_regs[] = {
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{0x3778, 0x10},
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{0x3800, 0x00},
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{0x3801, 0x00},
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{0x3802, 0x00},
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{0x3803, 0x00},
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{0x3804, 0x05},
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{0x3805, 0x0f},
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{0x3806, 0x03},
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{0x3807, 0x2f},
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{0x3808, 0x02},
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{0x3809, 0x80},
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{0x380a, 0x01},
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{0x380b, 0x90},
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{0x3810, 0x00},
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{0x3811, 0x04},
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{0x3812, 0x00},
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{0x3813, 0x04},
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{0x3814, 0x31},
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{0x3815, 0x22},
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{0x3820, 0x60},
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{0x3821, 0x01},
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{0x4008, 0x02},
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{0x4009, 0x05},
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{0x400c, 0x00},
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{0x400d, 0x03},
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{0x4507, 0x03},
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{0x4509, 0x80},
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};
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/* Supported sensor mode configurations */
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static const struct ov9282_mode supported_modes[] = {
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[MODE_1280_800] = {
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.width = 1280,
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.height = 800,
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.hblank_min = { 250, 176 },
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.vblank = 1022,
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.vblank_min = 110,
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.vblank_max = 51540,
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.link_freq_idx = 0,
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.crop = {
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.left = OV9282_PIXEL_ARRAY_LEFT,
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.top = OV9282_PIXEL_ARRAY_TOP,
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.width = 1280,
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.height = 800
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},
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.reg_list = {
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.num_of_regs = ARRAY_SIZE(mode_1280x800_regs),
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.regs = mode_1280x800_regs,
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},
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},
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[MODE_1280_720] = {
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.width = 1280,
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.height = 720,
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.hblank_min = { 250, 176 },
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.vblank = 1022,
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.vblank_min = 41,
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.vblank_max = 51540,
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.link_freq_idx = 0,
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.crop = {
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/*
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* Note that this mode takes the top 720 lines from the
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* 800 of the sensor. It does not take a middle crop.
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*/
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.left = OV9282_PIXEL_ARRAY_LEFT,
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.top = OV9282_PIXEL_ARRAY_TOP,
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.width = 1280,
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.height = 720
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},
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.reg_list = {
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.num_of_regs = ARRAY_SIZE(mode_1280x720_regs),
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.regs = mode_1280x720_regs,
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},
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},
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[MODE_640_400] = {
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.width = 640,
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.height = 400,
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.hblank_min = { 890, 816 },
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.vblank = 1022,
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.vblank_min = 22,
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.vblank_max = 51540,
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.link_freq_idx = 0,
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.crop = {
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.left = OV9282_PIXEL_ARRAY_LEFT,
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.top = OV9282_PIXEL_ARRAY_TOP,
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.width = 1280,
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.height = 800
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},
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.reg_list = {
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.num_of_regs = ARRAY_SIZE(mode_640x400_regs),
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.regs = mode_640x400_regs,
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},
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},
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};
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/**
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* to_ov9282() - ov9282 V4L2 sub-device to ov9282 device.
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* @subdev: pointer to ov9282 V4L2 sub-device
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*
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* Return: pointer to ov9282 device
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*/
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static inline struct ov9282 *to_ov9282(struct v4l2_subdev *subdev)
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{
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return container_of(subdev, struct ov9282, sd);
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}
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/**
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* ov9282_read_reg() - Read registers.
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* @ov9282: pointer to ov9282 device
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* @reg: register address
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* @len: length of bytes to read. Max supported bytes is 4
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* @val: pointer to register value to be filled.
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*
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* Return: 0 if successful, error code otherwise.
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*/
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static int ov9282_read_reg(struct ov9282 *ov9282, u16 reg, u32 len, u32 *val)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&ov9282->sd);
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struct i2c_msg msgs[2] = {0};
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u8 addr_buf[2] = {0};
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u8 data_buf[4] = {0};
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int ret;
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if (WARN_ON(len > 4))
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return -EINVAL;
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put_unaligned_be16(reg, addr_buf);
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/* Write register address */
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msgs[0].addr = client->addr;
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msgs[0].flags = 0;
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msgs[0].len = ARRAY_SIZE(addr_buf);
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msgs[0].buf = addr_buf;
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/* Read data from register */
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msgs[1].addr = client->addr;
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msgs[1].flags = I2C_M_RD;
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msgs[1].len = len;
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msgs[1].buf = &data_buf[4 - len];
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ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
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if (ret != ARRAY_SIZE(msgs))
|
|
return -EIO;
|
|
|
|
*val = get_unaligned_be32(data_buf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ov9282_write_reg() - Write register
|
|
* @ov9282: pointer to ov9282 device
|
|
* @reg: register address
|
|
* @len: length of bytes. Max supported bytes is 4
|
|
* @val: register value
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_write_reg(struct ov9282 *ov9282, u16 reg, u32 len, u32 val)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(&ov9282->sd);
|
|
u8 buf[6] = {0};
|
|
|
|
if (WARN_ON(len > 4))
|
|
return -EINVAL;
|
|
|
|
put_unaligned_be16(reg, buf);
|
|
put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
|
|
if (i2c_master_send(client, buf, len + 2) != len + 2)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ov9282_write_regs() - Write a list of registers
|
|
* @ov9282: pointer to ov9282 device
|
|
* @regs: list of registers to be written
|
|
* @len: length of registers array
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_write_regs(struct ov9282 *ov9282,
|
|
const struct ov9282_reg *regs, u32 len)
|
|
{
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
for (i = 0; i < len; i++) {
|
|
ret = ov9282_write_reg(ov9282, regs[i].address, 1, regs[i].val);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ov9282_update_controls() - Update control ranges based on streaming mode
|
|
* @ov9282: pointer to ov9282 device
|
|
* @mode: pointer to ov9282_mode sensor mode
|
|
* @fmt: pointer to the requested mode
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_update_controls(struct ov9282 *ov9282,
|
|
const struct ov9282_mode *mode,
|
|
const struct v4l2_subdev_format *fmt)
|
|
{
|
|
u32 hblank_min;
|
|
s64 pixel_rate;
|
|
int ret;
|
|
|
|
ret = __v4l2_ctrl_s_ctrl(ov9282->link_freq_ctrl, mode->link_freq_idx);
|
|
if (ret)
|
|
return ret;
|
|
|
|
pixel_rate = (fmt->format.code == MEDIA_BUS_FMT_Y10_1X10) ?
|
|
OV9282_PIXEL_RATE_10BIT : OV9282_PIXEL_RATE_8BIT;
|
|
ret = __v4l2_ctrl_modify_range(ov9282->pixel_rate, pixel_rate,
|
|
pixel_rate, 1, pixel_rate);
|
|
if (ret)
|
|
return ret;
|
|
|
|
hblank_min = mode->hblank_min[ov9282->noncontinuous_clock ? 0 : 1];
|
|
ret = __v4l2_ctrl_modify_range(ov9282->hblank_ctrl, hblank_min,
|
|
OV9282_TIMING_HTS_MAX - mode->width, 1,
|
|
hblank_min);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return __v4l2_ctrl_modify_range(ov9282->vblank_ctrl, mode->vblank_min,
|
|
mode->vblank_max, 1, mode->vblank);
|
|
}
|
|
|
|
/**
|
|
* ov9282_update_exp_gain() - Set updated exposure and gain
|
|
* @ov9282: pointer to ov9282 device
|
|
* @exposure: updated exposure value
|
|
* @gain: updated analog gain value
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_update_exp_gain(struct ov9282 *ov9282, u32 exposure, u32 gain)
|
|
{
|
|
int ret;
|
|
|
|
dev_dbg(ov9282->dev, "Set exp %u, analog gain %u",
|
|
exposure, gain);
|
|
|
|
ret = ov9282_write_reg(ov9282, OV9282_REG_HOLD, 1, 1);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ov9282_write_reg(ov9282, OV9282_REG_EXPOSURE, 3, exposure << 4);
|
|
if (ret)
|
|
goto error_release_group_hold;
|
|
|
|
ret = ov9282_write_reg(ov9282, OV9282_REG_AGAIN, 1, gain);
|
|
|
|
error_release_group_hold:
|
|
ov9282_write_reg(ov9282, OV9282_REG_HOLD, 1, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ov9282_set_ctrl_hflip(struct ov9282 *ov9282, int value)
|
|
{
|
|
u32 current_val;
|
|
int ret = ov9282_read_reg(ov9282, OV9282_REG_TIMING_FORMAT_2, 1,
|
|
¤t_val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (value)
|
|
current_val |= OV9282_FLIP_BIT;
|
|
else
|
|
current_val &= ~OV9282_FLIP_BIT;
|
|
|
|
return ov9282_write_reg(ov9282, OV9282_REG_TIMING_FORMAT_2, 1,
|
|
current_val);
|
|
}
|
|
|
|
static int ov9282_set_ctrl_vflip(struct ov9282 *ov9282, int value)
|
|
{
|
|
u32 current_val;
|
|
int ret = ov9282_read_reg(ov9282, OV9282_REG_TIMING_FORMAT_1, 1,
|
|
¤t_val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (value)
|
|
current_val |= OV9282_FLIP_BIT;
|
|
else
|
|
current_val &= ~OV9282_FLIP_BIT;
|
|
|
|
return ov9282_write_reg(ov9282, OV9282_REG_TIMING_FORMAT_1, 1,
|
|
current_val);
|
|
}
|
|
|
|
/**
|
|
* ov9282_set_ctrl() - Set subdevice control
|
|
* @ctrl: pointer to v4l2_ctrl structure
|
|
*
|
|
* Supported controls:
|
|
* - V4L2_CID_VBLANK
|
|
* - cluster controls:
|
|
* - V4L2_CID_ANALOGUE_GAIN
|
|
* - V4L2_CID_EXPOSURE
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_set_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct ov9282 *ov9282 =
|
|
container_of(ctrl->handler, struct ov9282, ctrl_handler);
|
|
u32 analog_gain;
|
|
u32 exposure;
|
|
u32 lpfr;
|
|
int ret;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_VBLANK:
|
|
ov9282->vblank = ov9282->vblank_ctrl->val;
|
|
|
|
dev_dbg(ov9282->dev, "Received vblank %u, new lpfr %u",
|
|
ov9282->vblank,
|
|
ov9282->vblank + ov9282->cur_mode->height);
|
|
|
|
ret = __v4l2_ctrl_modify_range(ov9282->exp_ctrl,
|
|
OV9282_EXPOSURE_MIN,
|
|
ov9282->vblank +
|
|
ov9282->cur_mode->height -
|
|
OV9282_EXPOSURE_OFFSET,
|
|
1, OV9282_EXPOSURE_DEFAULT);
|
|
break;
|
|
}
|
|
|
|
/* Set controls only if sensor is in power on state */
|
|
if (!pm_runtime_get_if_in_use(ov9282->dev))
|
|
return 0;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_EXPOSURE:
|
|
exposure = ctrl->val;
|
|
analog_gain = ov9282->again_ctrl->val;
|
|
|
|
dev_dbg(ov9282->dev, "Received exp %u, analog gain %u",
|
|
exposure, analog_gain);
|
|
|
|
ret = ov9282_update_exp_gain(ov9282, exposure, analog_gain);
|
|
break;
|
|
case V4L2_CID_VBLANK:
|
|
lpfr = ov9282->vblank + ov9282->cur_mode->height;
|
|
ret = ov9282_write_reg(ov9282, OV9282_REG_LPFR, 2, lpfr);
|
|
break;
|
|
case V4L2_CID_HFLIP:
|
|
ret = ov9282_set_ctrl_hflip(ov9282, ctrl->val);
|
|
break;
|
|
case V4L2_CID_VFLIP:
|
|
ret = ov9282_set_ctrl_vflip(ov9282, ctrl->val);
|
|
break;
|
|
case V4L2_CID_HBLANK:
|
|
ret = ov9282_write_reg(ov9282, OV9282_REG_TIMING_HTS, 2,
|
|
(ctrl->val + ov9282->cur_mode->width) >> 1);
|
|
break;
|
|
default:
|
|
dev_err(ov9282->dev, "Invalid control %d", ctrl->id);
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
pm_runtime_put(ov9282->dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* V4l2 subdevice control ops*/
|
|
static const struct v4l2_ctrl_ops ov9282_ctrl_ops = {
|
|
.s_ctrl = ov9282_set_ctrl,
|
|
};
|
|
|
|
/**
|
|
* ov9282_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes
|
|
* @sd: pointer to ov9282 V4L2 sub-device structure
|
|
* @sd_state: V4L2 sub-device configuration
|
|
* @code: V4L2 sub-device code enumeration need to be filled
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_enum_mbus_code(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_mbus_code_enum *code)
|
|
{
|
|
switch (code->index) {
|
|
case 0:
|
|
code->code = MEDIA_BUS_FMT_Y10_1X10;
|
|
break;
|
|
case 1:
|
|
code->code = MEDIA_BUS_FMT_Y8_1X8;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ov9282_enum_frame_size() - Enumerate V4L2 sub-device frame sizes
|
|
* @sd: pointer to ov9282 V4L2 sub-device structure
|
|
* @sd_state: V4L2 sub-device configuration
|
|
* @fsize: V4L2 sub-device size enumeration need to be filled
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_enum_frame_size(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_frame_size_enum *fsize)
|
|
{
|
|
if (fsize->index >= ARRAY_SIZE(supported_modes))
|
|
return -EINVAL;
|
|
|
|
if (fsize->code != MEDIA_BUS_FMT_Y10_1X10 &&
|
|
fsize->code != MEDIA_BUS_FMT_Y8_1X8)
|
|
return -EINVAL;
|
|
|
|
fsize->min_width = supported_modes[fsize->index].width;
|
|
fsize->max_width = fsize->min_width;
|
|
fsize->min_height = supported_modes[fsize->index].height;
|
|
fsize->max_height = fsize->min_height;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ov9282_fill_pad_format() - Fill subdevice pad format
|
|
* from selected sensor mode
|
|
* @ov9282: pointer to ov9282 device
|
|
* @mode: pointer to ov9282_mode sensor mode
|
|
* @code: mbus code to be stored
|
|
* @fmt: V4L2 sub-device format need to be filled
|
|
*/
|
|
static void ov9282_fill_pad_format(struct ov9282 *ov9282,
|
|
const struct ov9282_mode *mode,
|
|
u32 code,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
fmt->format.width = mode->width;
|
|
fmt->format.height = mode->height;
|
|
fmt->format.code = code;
|
|
fmt->format.field = V4L2_FIELD_NONE;
|
|
fmt->format.colorspace = V4L2_COLORSPACE_RAW;
|
|
fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
|
|
fmt->format.quantization = V4L2_QUANTIZATION_DEFAULT;
|
|
fmt->format.xfer_func = V4L2_XFER_FUNC_NONE;
|
|
}
|
|
|
|
/**
|
|
* ov9282_get_pad_format() - Get subdevice pad format
|
|
* @sd: pointer to ov9282 V4L2 sub-device structure
|
|
* @sd_state: V4L2 sub-device configuration
|
|
* @fmt: V4L2 sub-device format need to be set
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_get_pad_format(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct ov9282 *ov9282 = to_ov9282(sd);
|
|
|
|
mutex_lock(&ov9282->mutex);
|
|
|
|
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
|
|
struct v4l2_mbus_framefmt *framefmt;
|
|
|
|
framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
|
|
fmt->format = *framefmt;
|
|
} else {
|
|
ov9282_fill_pad_format(ov9282, ov9282->cur_mode, ov9282->code,
|
|
fmt);
|
|
}
|
|
|
|
mutex_unlock(&ov9282->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ov9282_set_pad_format() - Set subdevice pad format
|
|
* @sd: pointer to ov9282 V4L2 sub-device structure
|
|
* @sd_state: V4L2 sub-device configuration
|
|
* @fmt: V4L2 sub-device format need to be set
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_set_pad_format(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct ov9282 *ov9282 = to_ov9282(sd);
|
|
const struct ov9282_mode *mode;
|
|
u32 code;
|
|
int ret = 0;
|
|
|
|
mutex_lock(&ov9282->mutex);
|
|
|
|
mode = v4l2_find_nearest_size(supported_modes,
|
|
ARRAY_SIZE(supported_modes),
|
|
width, height,
|
|
fmt->format.width,
|
|
fmt->format.height);
|
|
if (fmt->format.code == MEDIA_BUS_FMT_Y8_1X8)
|
|
code = MEDIA_BUS_FMT_Y8_1X8;
|
|
else
|
|
code = MEDIA_BUS_FMT_Y10_1X10;
|
|
|
|
ov9282_fill_pad_format(ov9282, mode, code, fmt);
|
|
|
|
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
|
|
struct v4l2_mbus_framefmt *framefmt;
|
|
|
|
framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
|
|
*framefmt = fmt->format;
|
|
} else {
|
|
ret = ov9282_update_controls(ov9282, mode, fmt);
|
|
if (!ret) {
|
|
ov9282->cur_mode = mode;
|
|
ov9282->code = code;
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&ov9282->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ov9282_init_pad_cfg() - Initialize sub-device pad configuration
|
|
* @sd: pointer to ov9282 V4L2 sub-device structure
|
|
* @sd_state: V4L2 sub-device configuration
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_init_pad_cfg(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state)
|
|
{
|
|
struct ov9282 *ov9282 = to_ov9282(sd);
|
|
struct v4l2_subdev_format fmt = { 0 };
|
|
|
|
fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
|
|
ov9282_fill_pad_format(ov9282, &supported_modes[DEFAULT_MODE],
|
|
ov9282->code, &fmt);
|
|
|
|
return ov9282_set_pad_format(sd, sd_state, &fmt);
|
|
}
|
|
|
|
static const struct v4l2_rect *
|
|
__ov9282_get_pad_crop(struct ov9282 *ov9282,
|
|
struct v4l2_subdev_state *sd_state,
|
|
unsigned int pad, enum v4l2_subdev_format_whence which)
|
|
{
|
|
switch (which) {
|
|
case V4L2_SUBDEV_FORMAT_TRY:
|
|
return v4l2_subdev_get_try_crop(&ov9282->sd, sd_state, pad);
|
|
case V4L2_SUBDEV_FORMAT_ACTIVE:
|
|
return &ov9282->cur_mode->crop;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int ov9282_get_selection(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_selection *sel)
|
|
{
|
|
switch (sel->target) {
|
|
case V4L2_SEL_TGT_CROP: {
|
|
struct ov9282 *ov9282 = to_ov9282(sd);
|
|
|
|
mutex_lock(&ov9282->mutex);
|
|
sel->r = *__ov9282_get_pad_crop(ov9282, sd_state, sel->pad,
|
|
sel->which);
|
|
mutex_unlock(&ov9282->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
case V4L2_SEL_TGT_NATIVE_SIZE:
|
|
sel->r.top = 0;
|
|
sel->r.left = 0;
|
|
sel->r.width = OV9282_NATIVE_WIDTH;
|
|
sel->r.height = OV9282_NATIVE_HEIGHT;
|
|
|
|
return 0;
|
|
|
|
case V4L2_SEL_TGT_CROP_DEFAULT:
|
|
case V4L2_SEL_TGT_CROP_BOUNDS:
|
|
sel->r.top = OV9282_PIXEL_ARRAY_TOP;
|
|
sel->r.left = OV9282_PIXEL_ARRAY_LEFT;
|
|
sel->r.width = OV9282_PIXEL_ARRAY_WIDTH;
|
|
sel->r.height = OV9282_PIXEL_ARRAY_HEIGHT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* ov9282_start_streaming() - Start sensor stream
|
|
* @ov9282: pointer to ov9282 device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_start_streaming(struct ov9282 *ov9282)
|
|
{
|
|
const struct ov9282_reg bitdepth_regs[2][2] = {
|
|
{
|
|
{OV9282_REG_PLL_CTRL_0D, OV9282_PLL_CTRL_0D_RAW10},
|
|
{OV9282_REG_ANA_CORE_2, OV9282_ANA_CORE2_RAW10},
|
|
}, {
|
|
{OV9282_REG_PLL_CTRL_0D, OV9282_PLL_CTRL_0D_RAW8},
|
|
{OV9282_REG_ANA_CORE_2, OV9282_ANA_CORE2_RAW8},
|
|
}
|
|
};
|
|
const struct ov9282_reg_list *reg_list;
|
|
int bitdepth_index;
|
|
int ret;
|
|
|
|
/* Write common registers */
|
|
ret = ov9282_write_regs(ov9282, common_regs_list.regs,
|
|
common_regs_list.num_of_regs);
|
|
if (ret) {
|
|
dev_err(ov9282->dev, "fail to write common registers");
|
|
return ret;
|
|
}
|
|
|
|
bitdepth_index = ov9282->code == MEDIA_BUS_FMT_Y10_1X10 ? 0 : 1;
|
|
ret = ov9282_write_regs(ov9282, bitdepth_regs[bitdepth_index], 2);
|
|
if (ret) {
|
|
dev_err(ov9282->dev, "fail to write bitdepth regs");
|
|
return ret;
|
|
}
|
|
|
|
/* Write sensor mode registers */
|
|
reg_list = &ov9282->cur_mode->reg_list;
|
|
ret = ov9282_write_regs(ov9282, reg_list->regs, reg_list->num_of_regs);
|
|
if (ret) {
|
|
dev_err(ov9282->dev, "fail to write initial registers");
|
|
return ret;
|
|
}
|
|
|
|
/* Setup handler will write actual exposure and gain */
|
|
ret = __v4l2_ctrl_handler_setup(ov9282->sd.ctrl_handler);
|
|
if (ret) {
|
|
dev_err(ov9282->dev, "fail to setup handler");
|
|
return ret;
|
|
}
|
|
|
|
/* Start streaming */
|
|
ret = ov9282_write_reg(ov9282, OV9282_REG_MODE_SELECT,
|
|
1, OV9282_MODE_STREAMING);
|
|
if (ret) {
|
|
dev_err(ov9282->dev, "fail to start streaming");
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ov9282_stop_streaming() - Stop sensor stream
|
|
* @ov9282: pointer to ov9282 device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_stop_streaming(struct ov9282 *ov9282)
|
|
{
|
|
return ov9282_write_reg(ov9282, OV9282_REG_MODE_SELECT,
|
|
1, OV9282_MODE_STANDBY);
|
|
}
|
|
|
|
/**
|
|
* ov9282_set_stream() - Enable sensor streaming
|
|
* @sd: pointer to ov9282 subdevice
|
|
* @enable: set to enable sensor streaming
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_set_stream(struct v4l2_subdev *sd, int enable)
|
|
{
|
|
struct ov9282 *ov9282 = to_ov9282(sd);
|
|
int ret;
|
|
|
|
mutex_lock(&ov9282->mutex);
|
|
|
|
if (ov9282->streaming == enable) {
|
|
mutex_unlock(&ov9282->mutex);
|
|
return 0;
|
|
}
|
|
|
|
if (enable) {
|
|
ret = pm_runtime_resume_and_get(ov9282->dev);
|
|
if (ret)
|
|
goto error_unlock;
|
|
|
|
ret = ov9282_start_streaming(ov9282);
|
|
if (ret)
|
|
goto error_power_off;
|
|
} else {
|
|
ov9282_stop_streaming(ov9282);
|
|
pm_runtime_put(ov9282->dev);
|
|
}
|
|
|
|
ov9282->streaming = enable;
|
|
|
|
mutex_unlock(&ov9282->mutex);
|
|
|
|
return 0;
|
|
|
|
error_power_off:
|
|
pm_runtime_put(ov9282->dev);
|
|
error_unlock:
|
|
mutex_unlock(&ov9282->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ov9282_detect() - Detect ov9282 sensor
|
|
* @ov9282: pointer to ov9282 device
|
|
*
|
|
* Return: 0 if successful, -EIO if sensor id does not match
|
|
*/
|
|
static int ov9282_detect(struct ov9282 *ov9282)
|
|
{
|
|
int ret;
|
|
u32 val;
|
|
|
|
ret = ov9282_read_reg(ov9282, OV9282_REG_ID, 2, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (val != OV9282_ID) {
|
|
dev_err(ov9282->dev, "chip id mismatch: %x!=%x",
|
|
OV9282_ID, val);
|
|
return -ENXIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ov9282_configure_regulators(struct ov9282 *ov9282)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < OV9282_NUM_SUPPLIES; i++)
|
|
ov9282->supplies[i].supply = ov9282_supply_names[i];
|
|
|
|
return devm_regulator_bulk_get(ov9282->dev,
|
|
OV9282_NUM_SUPPLIES,
|
|
ov9282->supplies);
|
|
}
|
|
|
|
/**
|
|
* ov9282_parse_hw_config() - Parse HW configuration and check if supported
|
|
* @ov9282: pointer to ov9282 device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_parse_hw_config(struct ov9282 *ov9282)
|
|
{
|
|
struct fwnode_handle *fwnode = dev_fwnode(ov9282->dev);
|
|
struct v4l2_fwnode_endpoint bus_cfg = {
|
|
.bus_type = V4L2_MBUS_CSI2_DPHY
|
|
};
|
|
struct fwnode_handle *ep;
|
|
unsigned long rate;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
if (!fwnode)
|
|
return -ENXIO;
|
|
|
|
/* Request optional reset pin */
|
|
ov9282->reset_gpio = devm_gpiod_get_optional(ov9282->dev, "reset",
|
|
GPIOD_OUT_LOW);
|
|
if (IS_ERR(ov9282->reset_gpio)) {
|
|
dev_err(ov9282->dev, "failed to get reset gpio %ld",
|
|
PTR_ERR(ov9282->reset_gpio));
|
|
return PTR_ERR(ov9282->reset_gpio);
|
|
}
|
|
|
|
/* Get sensor input clock */
|
|
ov9282->inclk = devm_clk_get(ov9282->dev, NULL);
|
|
if (IS_ERR(ov9282->inclk)) {
|
|
dev_err(ov9282->dev, "could not get inclk");
|
|
return PTR_ERR(ov9282->inclk);
|
|
}
|
|
|
|
ret = ov9282_configure_regulators(ov9282);
|
|
if (ret)
|
|
return dev_err_probe(ov9282->dev, ret,
|
|
"Failed to get power regulators\n");
|
|
|
|
rate = clk_get_rate(ov9282->inclk);
|
|
if (rate != OV9282_INCLK_RATE) {
|
|
dev_err(ov9282->dev, "inclk frequency mismatch");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
|
|
if (!ep)
|
|
return -ENXIO;
|
|
|
|
ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
|
|
fwnode_handle_put(ep);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ov9282->noncontinuous_clock =
|
|
bus_cfg.bus.mipi_csi2.flags & V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK;
|
|
|
|
if (bus_cfg.bus.mipi_csi2.num_data_lanes != OV9282_NUM_DATA_LANES) {
|
|
dev_err(ov9282->dev,
|
|
"number of CSI2 data lanes %d is not supported",
|
|
bus_cfg.bus.mipi_csi2.num_data_lanes);
|
|
ret = -EINVAL;
|
|
goto done_endpoint_free;
|
|
}
|
|
|
|
if (!bus_cfg.nr_of_link_frequencies) {
|
|
dev_err(ov9282->dev, "no link frequencies defined");
|
|
ret = -EINVAL;
|
|
goto done_endpoint_free;
|
|
}
|
|
|
|
for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++)
|
|
if (bus_cfg.link_frequencies[i] == OV9282_LINK_FREQ)
|
|
goto done_endpoint_free;
|
|
|
|
ret = -EINVAL;
|
|
|
|
done_endpoint_free:
|
|
v4l2_fwnode_endpoint_free(&bus_cfg);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* V4l2 subdevice ops */
|
|
static const struct v4l2_subdev_core_ops ov9282_core_ops = {
|
|
.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
|
|
.unsubscribe_event = v4l2_event_subdev_unsubscribe,
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops ov9282_video_ops = {
|
|
.s_stream = ov9282_set_stream,
|
|
};
|
|
|
|
static const struct v4l2_subdev_pad_ops ov9282_pad_ops = {
|
|
.init_cfg = ov9282_init_pad_cfg,
|
|
.enum_mbus_code = ov9282_enum_mbus_code,
|
|
.enum_frame_size = ov9282_enum_frame_size,
|
|
.get_fmt = ov9282_get_pad_format,
|
|
.set_fmt = ov9282_set_pad_format,
|
|
.get_selection = ov9282_get_selection,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops ov9282_subdev_ops = {
|
|
.core = &ov9282_core_ops,
|
|
.video = &ov9282_video_ops,
|
|
.pad = &ov9282_pad_ops,
|
|
};
|
|
|
|
/**
|
|
* ov9282_power_on() - Sensor power on sequence
|
|
* @dev: pointer to i2c device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_power_on(struct device *dev)
|
|
{
|
|
struct v4l2_subdev *sd = dev_get_drvdata(dev);
|
|
struct ov9282 *ov9282 = to_ov9282(sd);
|
|
int ret;
|
|
|
|
ret = regulator_bulk_enable(OV9282_NUM_SUPPLIES, ov9282->supplies);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to enable regulators\n");
|
|
return ret;
|
|
}
|
|
|
|
usleep_range(400, 600);
|
|
|
|
gpiod_set_value_cansleep(ov9282->reset_gpio, 1);
|
|
|
|
ret = clk_prepare_enable(ov9282->inclk);
|
|
if (ret) {
|
|
dev_err(ov9282->dev, "fail to enable inclk");
|
|
goto error_reset;
|
|
}
|
|
|
|
usleep_range(400, 600);
|
|
|
|
ret = ov9282_write_reg(ov9282, OV9282_REG_MIPI_CTRL00, 1,
|
|
ov9282->noncontinuous_clock ?
|
|
OV9282_GATED_CLOCK : 0);
|
|
if (ret) {
|
|
dev_err(ov9282->dev, "fail to write MIPI_CTRL00");
|
|
goto error_clk;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error_clk:
|
|
clk_disable_unprepare(ov9282->inclk);
|
|
error_reset:
|
|
gpiod_set_value_cansleep(ov9282->reset_gpio, 0);
|
|
|
|
regulator_bulk_disable(OV9282_NUM_SUPPLIES, ov9282->supplies);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ov9282_power_off() - Sensor power off sequence
|
|
* @dev: pointer to i2c device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_power_off(struct device *dev)
|
|
{
|
|
struct v4l2_subdev *sd = dev_get_drvdata(dev);
|
|
struct ov9282 *ov9282 = to_ov9282(sd);
|
|
|
|
gpiod_set_value_cansleep(ov9282->reset_gpio, 0);
|
|
|
|
clk_disable_unprepare(ov9282->inclk);
|
|
|
|
regulator_bulk_disable(OV9282_NUM_SUPPLIES, ov9282->supplies);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ov9282_init_controls() - Initialize sensor subdevice controls
|
|
* @ov9282: pointer to ov9282 device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_init_controls(struct ov9282 *ov9282)
|
|
{
|
|
struct v4l2_ctrl_handler *ctrl_hdlr = &ov9282->ctrl_handler;
|
|
const struct ov9282_mode *mode = ov9282->cur_mode;
|
|
struct v4l2_fwnode_device_properties props;
|
|
u32 hblank_min;
|
|
u32 lpfr;
|
|
int ret;
|
|
|
|
ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Serialize controls with sensor device */
|
|
ctrl_hdlr->lock = &ov9282->mutex;
|
|
|
|
/* Initialize exposure and gain */
|
|
lpfr = mode->vblank + mode->height;
|
|
ov9282->exp_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
|
|
&ov9282_ctrl_ops,
|
|
V4L2_CID_EXPOSURE,
|
|
OV9282_EXPOSURE_MIN,
|
|
lpfr - OV9282_EXPOSURE_OFFSET,
|
|
OV9282_EXPOSURE_STEP,
|
|
OV9282_EXPOSURE_DEFAULT);
|
|
|
|
ov9282->again_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
|
|
&ov9282_ctrl_ops,
|
|
V4L2_CID_ANALOGUE_GAIN,
|
|
OV9282_AGAIN_MIN,
|
|
OV9282_AGAIN_MAX,
|
|
OV9282_AGAIN_STEP,
|
|
OV9282_AGAIN_DEFAULT);
|
|
|
|
v4l2_ctrl_cluster(2, &ov9282->exp_ctrl);
|
|
|
|
ov9282->vblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
|
|
&ov9282_ctrl_ops,
|
|
V4L2_CID_VBLANK,
|
|
mode->vblank_min,
|
|
mode->vblank_max,
|
|
1, mode->vblank);
|
|
|
|
v4l2_ctrl_new_std(ctrl_hdlr, &ov9282_ctrl_ops, V4L2_CID_VFLIP,
|
|
0, 1, 1, 1);
|
|
|
|
v4l2_ctrl_new_std(ctrl_hdlr, &ov9282_ctrl_ops, V4L2_CID_HFLIP,
|
|
0, 1, 1, 1);
|
|
|
|
/* Read only controls */
|
|
ov9282->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov9282_ctrl_ops,
|
|
V4L2_CID_PIXEL_RATE,
|
|
OV9282_PIXEL_RATE_10BIT,
|
|
OV9282_PIXEL_RATE_10BIT, 1,
|
|
OV9282_PIXEL_RATE_10BIT);
|
|
|
|
ov9282->link_freq_ctrl = v4l2_ctrl_new_int_menu(ctrl_hdlr,
|
|
&ov9282_ctrl_ops,
|
|
V4L2_CID_LINK_FREQ,
|
|
ARRAY_SIZE(link_freq) -
|
|
1,
|
|
mode->link_freq_idx,
|
|
link_freq);
|
|
if (ov9282->link_freq_ctrl)
|
|
ov9282->link_freq_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
|
|
|
|
hblank_min = mode->hblank_min[ov9282->noncontinuous_clock ? 0 : 1];
|
|
ov9282->hblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
|
|
&ov9282_ctrl_ops,
|
|
V4L2_CID_HBLANK,
|
|
hblank_min,
|
|
OV9282_TIMING_HTS_MAX - mode->width,
|
|
1, hblank_min);
|
|
|
|
ret = v4l2_fwnode_device_parse(ov9282->dev, &props);
|
|
if (!ret) {
|
|
/* Failure sets ctrl_hdlr->error, which we check afterwards anyway */
|
|
v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &ov9282_ctrl_ops,
|
|
&props);
|
|
}
|
|
|
|
if (ctrl_hdlr->error || ret) {
|
|
dev_err(ov9282->dev, "control init failed: %d",
|
|
ctrl_hdlr->error);
|
|
v4l2_ctrl_handler_free(ctrl_hdlr);
|
|
return ctrl_hdlr->error;
|
|
}
|
|
|
|
ov9282->sd.ctrl_handler = ctrl_hdlr;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ov9282_probe() - I2C client device binding
|
|
* @client: pointer to i2c client device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int ov9282_probe(struct i2c_client *client)
|
|
{
|
|
struct ov9282 *ov9282;
|
|
int ret;
|
|
|
|
ov9282 = devm_kzalloc(&client->dev, sizeof(*ov9282), GFP_KERNEL);
|
|
if (!ov9282)
|
|
return -ENOMEM;
|
|
|
|
ov9282->dev = &client->dev;
|
|
|
|
/* Initialize subdev */
|
|
v4l2_i2c_subdev_init(&ov9282->sd, client, &ov9282_subdev_ops);
|
|
v4l2_i2c_subdev_set_name(&ov9282->sd, client,
|
|
device_get_match_data(ov9282->dev), NULL);
|
|
|
|
ret = ov9282_parse_hw_config(ov9282);
|
|
if (ret) {
|
|
dev_err(ov9282->dev, "HW configuration is not supported");
|
|
return ret;
|
|
}
|
|
|
|
mutex_init(&ov9282->mutex);
|
|
|
|
ret = ov9282_power_on(ov9282->dev);
|
|
if (ret) {
|
|
dev_err(ov9282->dev, "failed to power-on the sensor");
|
|
goto error_mutex_destroy;
|
|
}
|
|
|
|
/* Check module identity */
|
|
ret = ov9282_detect(ov9282);
|
|
if (ret) {
|
|
dev_err(ov9282->dev, "failed to find sensor: %d", ret);
|
|
goto error_power_off;
|
|
}
|
|
|
|
/* Set default mode to first mode */
|
|
ov9282->cur_mode = &supported_modes[DEFAULT_MODE];
|
|
ov9282->code = MEDIA_BUS_FMT_Y10_1X10;
|
|
ov9282->vblank = ov9282->cur_mode->vblank;
|
|
|
|
ret = ov9282_init_controls(ov9282);
|
|
if (ret) {
|
|
dev_err(ov9282->dev, "failed to init controls: %d", ret);
|
|
goto error_power_off;
|
|
}
|
|
|
|
/* Initialize subdev */
|
|
ov9282->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
|
|
V4L2_SUBDEV_FL_HAS_EVENTS;
|
|
ov9282->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
|
|
|
|
/* Initialize source pad */
|
|
ov9282->pad.flags = MEDIA_PAD_FL_SOURCE;
|
|
ret = media_entity_pads_init(&ov9282->sd.entity, 1, &ov9282->pad);
|
|
if (ret) {
|
|
dev_err(ov9282->dev, "failed to init entity pads: %d", ret);
|
|
goto error_handler_free;
|
|
}
|
|
|
|
ret = v4l2_async_register_subdev_sensor(&ov9282->sd);
|
|
if (ret < 0) {
|
|
dev_err(ov9282->dev,
|
|
"failed to register async subdev: %d", ret);
|
|
goto error_media_entity;
|
|
}
|
|
|
|
pm_runtime_set_active(ov9282->dev);
|
|
pm_runtime_enable(ov9282->dev);
|
|
pm_runtime_idle(ov9282->dev);
|
|
|
|
return 0;
|
|
|
|
error_media_entity:
|
|
media_entity_cleanup(&ov9282->sd.entity);
|
|
error_handler_free:
|
|
v4l2_ctrl_handler_free(ov9282->sd.ctrl_handler);
|
|
error_power_off:
|
|
ov9282_power_off(ov9282->dev);
|
|
error_mutex_destroy:
|
|
mutex_destroy(&ov9282->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ov9282_remove() - I2C client device unbinding
|
|
* @client: pointer to I2C client device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static void ov9282_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct ov9282 *ov9282 = to_ov9282(sd);
|
|
|
|
v4l2_async_unregister_subdev(sd);
|
|
media_entity_cleanup(&sd->entity);
|
|
v4l2_ctrl_handler_free(sd->ctrl_handler);
|
|
|
|
pm_runtime_disable(&client->dev);
|
|
if (!pm_runtime_status_suspended(&client->dev))
|
|
ov9282_power_off(&client->dev);
|
|
pm_runtime_set_suspended(&client->dev);
|
|
|
|
mutex_destroy(&ov9282->mutex);
|
|
}
|
|
|
|
static const struct dev_pm_ops ov9282_pm_ops = {
|
|
SET_RUNTIME_PM_OPS(ov9282_power_off, ov9282_power_on, NULL)
|
|
};
|
|
|
|
static const struct of_device_id ov9282_of_match[] = {
|
|
{ .compatible = "ovti,ov9281", .data = "ov9281" },
|
|
{ .compatible = "ovti,ov9282", .data = "ov9282" },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, ov9282_of_match);
|
|
|
|
static struct i2c_driver ov9282_driver = {
|
|
.probe_new = ov9282_probe,
|
|
.remove = ov9282_remove,
|
|
.driver = {
|
|
.name = "ov9282",
|
|
.pm = &ov9282_pm_ops,
|
|
.of_match_table = ov9282_of_match,
|
|
},
|
|
};
|
|
|
|
module_i2c_driver(ov9282_driver);
|
|
|
|
MODULE_DESCRIPTION("OmniVision ov9282 sensor driver");
|
|
MODULE_LICENSE("GPL");
|