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Brooklyn/drivers/media/i2c/ov5647.c

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initial commit
2021-05-26 19:09:36 +00:00
/*
* 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.
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*
* 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.
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*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.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-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-image-sizes.h>
#include <media/v4l2-mediabus.h>
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#define SENSOR_NAME "ov5647"
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/*
* From the datasheet, "20ms after PWDN goes low or 20ms after RESETB goes
* high if reset is inserted after PWDN goes high, host can access sensor's
* SCCB to initialize sensor."
*/
#define PWDN_ACTIVE_DELAY_MS 20
#define MIPI_CTRL00_CLOCK_LANE_GATE BIT(5)
#define MIPI_CTRL00_LINE_SYNC_ENABLE BIT(4)
#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
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#define OV5647_REG_CHIPID_H 0x300A
#define OV5647_REG_CHIPID_L 0x300B
#define OV5640_REG_PAD_OUT 0x300D
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#define OV5647_REG_EXP_HI 0x3500
#define OV5647_REG_EXP_MID 0x3501
#define OV5647_REG_EXP_LO 0x3502
#define OV5647_REG_AEC_AGC 0x3503
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#define OV5647_REG_GAIN_HI 0x350A
#define OV5647_REG_GAIN_LO 0x350B
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#define OV5647_REG_VTS_HI 0x380e
#define OV5647_REG_VTS_LO 0x380f
#define OV5647_REG_FRAME_OFF_NUMBER 0x4202
#define OV5647_REG_MIPI_CTRL00 0x4800
#define OV5647_REG_MIPI_CTRL14 0x4814
#define OV5647_REG_AWB 0x5001
#define REG_TERM 0xfffe
#define VAL_TERM 0xfe
#define REG_DLY 0xffff
/* OV5647 native and active pixel array size */
#define OV5647_NATIVE_WIDTH 2624U
#define OV5647_NATIVE_HEIGHT 1956U
#define OV5647_PIXEL_ARRAY_LEFT 16U
#define OV5647_PIXEL_ARRAY_TOP 6U
#define OV5647_PIXEL_ARRAY_WIDTH 2592U
#define OV5647_PIXEL_ARRAY_HEIGHT 1944U
#define OV5647_VBLANK_MIN 24
#define OV5647_VTS_MAX 32767
#define OV5647_EXPOSURE_MIN 4
#define OV5647_EXPOSURE_STEP 1
#define OV5647_EXPOSURE_DEFAULT 1000
#define OV5647_EXPOSURE_MAX 65535
struct regval_list {
u16 addr;
u8 data;
};
struct ov5647_mode {
struct v4l2_mbus_framefmt format;
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/* Analog crop rectangle. */
struct v4l2_rect crop;
u64 pixel_rate;
/* HTS as defined in the register set (0x380C/0x380D) */
int hts;
/* Default VTS value for this mode */
int vts_def;
struct regval_list *reg_list;
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unsigned int num_regs;
};
struct ov5647 {
struct v4l2_subdev sd;
struct media_pad pad;
struct mutex lock;
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const struct ov5647_mode *mode;
int power_count;
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struct clk *xclk;
struct gpio_desc *pwdn;
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unsigned int flags;
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struct v4l2_ctrl_handler ctrls;
struct v4l2_ctrl *pixel_rate;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *vblank;
struct v4l2_ctrl *exposure;
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bool write_mode_regs;
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};
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static inline struct ov5647 *to_state(struct v4l2_subdev *sd)
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{
return container_of(sd, struct ov5647, sd);
}
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static struct regval_list sensor_oe_disable_regs[] = {
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{0x3000, 0x00},
{0x3001, 0x00},
{0x3002, 0x00},
};
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static struct regval_list sensor_oe_enable_regs[] = {
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{0x3000, 0x0f},
{0x3001, 0xff},
{0x3002, 0xe4},
};
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static struct regval_list ov5647_640x480_8bit[] = {
{0x0100, 0x00},
{0x0103, 0x01},
{0x3034, 0x08},
{0x3035, 0x21},
{0x3036, 0x46},
{0x303c, 0x11},
{0x3106, 0xf5},
{0x3821, 0x07},
{0x3820, 0x41},
{0x3827, 0xec},
{0x370c, 0x0f},
{0x3612, 0x59},
{0x3618, 0x00},
{0x5000, 0x06},
{0x5002, 0x41},
{0x5003, 0x08},
{0x5a00, 0x08},
{0x3000, 0x00},
{0x3001, 0x00},
{0x3002, 0x00},
{0x3016, 0x08},
{0x3017, 0xe0},
{0x3018, 0x44},
{0x301c, 0xf8},
{0x301d, 0xf0},
{0x3a18, 0x00},
{0x3a19, 0xf8},
{0x3c01, 0x80},
{0x3b07, 0x0c},
{0x380c, 0x07},
{0x380d, 0x68},
{0x3814, 0x31},
{0x3815, 0x31},
{0x3708, 0x64},
{0x3709, 0x52},
{0x3808, 0x02},
{0x3809, 0x80},
{0x380a, 0x01},
{0x380b, 0xE0},
{0x3801, 0x00},
{0x3802, 0x00},
{0x3803, 0x00},
{0x3804, 0x0a},
{0x3805, 0x3f},
{0x3806, 0x07},
{0x3807, 0xa1},
{0x3811, 0x08},
{0x3813, 0x02},
{0x3630, 0x2e},
{0x3632, 0xe2},
{0x3633, 0x23},
{0x3634, 0x44},
{0x3636, 0x06},
{0x3620, 0x64},
{0x3621, 0xe0},
{0x3600, 0x37},
{0x3704, 0xa0},
{0x3703, 0x5a},
{0x3715, 0x78},
{0x3717, 0x01},
{0x3731, 0x02},
{0x370b, 0x60},
{0x3705, 0x1a},
{0x3f05, 0x02},
{0x3f06, 0x10},
{0x3f01, 0x0a},
{0x3a08, 0x01},
{0x3a09, 0x27},
{0x3a0a, 0x00},
{0x3a0b, 0xf6},
{0x3a0d, 0x04},
{0x3a0e, 0x03},
{0x3a0f, 0x58},
{0x3a10, 0x50},
{0x3a1b, 0x58},
{0x3a1e, 0x50},
{0x3a11, 0x60},
{0x3a1f, 0x28},
{0x4001, 0x02},
{0x4004, 0x02},
{0x4000, 0x09},
{0x4837, 0x24},
{0x4050, 0x6e},
{0x4051, 0x8f},
{0x0100, 0x01},
};
static struct regval_list ov5647_2592x1944_10bit[] = {
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{0x0100, 0x00},
{0x0103, 0x01},
{0x3034, 0x1a},
{0x3035, 0x21},
{0x3036, 0x69},
{0x303c, 0x11},
{0x3106, 0xf5},
{0x3821, 0x06},
{0x3820, 0x00},
{0x3827, 0xec},
{0x370c, 0x03},
{0x3612, 0x5b},
{0x3618, 0x04},
{0x5000, 0x06},
{0x5002, 0x41},
{0x5003, 0x08},
{0x5a00, 0x08},
{0x3000, 0x00},
{0x3001, 0x00},
{0x3002, 0x00},
{0x3016, 0x08},
{0x3017, 0xe0},
{0x3018, 0x44},
{0x301c, 0xf8},
{0x301d, 0xf0},
{0x3a18, 0x00},
{0x3a19, 0xf8},
{0x3c01, 0x80},
{0x3b07, 0x0c},
{0x380c, 0x0b},
{0x380d, 0x1c},
{0x3814, 0x11},
{0x3815, 0x11},
{0x3708, 0x64},
{0x3709, 0x12},
{0x3808, 0x0a},
{0x3809, 0x20},
{0x380a, 0x07},
{0x380b, 0x98},
{0x3800, 0x00},
{0x3801, 0x00},
{0x3802, 0x00},
{0x3803, 0x00},
{0x3804, 0x0a},
{0x3805, 0x3f},
{0x3806, 0x07},
{0x3807, 0xa3},
{0x3811, 0x10},
{0x3813, 0x06},
{0x3630, 0x2e},
{0x3632, 0xe2},
{0x3633, 0x23},
{0x3634, 0x44},
{0x3636, 0x06},
{0x3620, 0x64},
{0x3621, 0xe0},
{0x3600, 0x37},
{0x3704, 0xa0},
{0x3703, 0x5a},
{0x3715, 0x78},
{0x3717, 0x01},
{0x3731, 0x02},
{0x370b, 0x60},
{0x3705, 0x1a},
{0x3f05, 0x02},
{0x3f06, 0x10},
{0x3f01, 0x0a},
{0x3a08, 0x01},
{0x3a09, 0x28},
{0x3a0a, 0x00},
{0x3a0b, 0xf6},
{0x3a0d, 0x08},
{0x3a0e, 0x06},
{0x3a0f, 0x58},
{0x3a10, 0x50},
{0x3a1b, 0x58},
{0x3a1e, 0x50},
{0x3a11, 0x60},
{0x3a1f, 0x28},
{0x4001, 0x02},
{0x4004, 0x04},
{0x4000, 0x09},
{0x4837, 0x19},
{0x4800, 0x24},
{0x3503, 0x03},
{0x0100, 0x01},
};
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static struct regval_list ov5647_1080p30_10bit[] = {
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{0x0100, 0x00},
{0x0103, 0x01},
{0x3034, 0x1a},
{0x3035, 0x21},
{0x3036, 0x62},
{0x303c, 0x11},
{0x3106, 0xf5},
{0x3821, 0x06},
{0x3820, 0x00},
{0x3827, 0xec},
{0x370c, 0x03},
{0x3612, 0x5b},
{0x3618, 0x04},
{0x5000, 0x06},
{0x5002, 0x41},
{0x5003, 0x08},
{0x5a00, 0x08},
{0x3000, 0x00},
{0x3001, 0x00},
{0x3002, 0x00},
{0x3016, 0x08},
{0x3017, 0xe0},
{0x3018, 0x44},
{0x301c, 0xf8},
{0x301d, 0xf0},
{0x3a18, 0x00},
{0x3a19, 0xf8},
{0x3c01, 0x80},
{0x3b07, 0x0c},
{0x380c, 0x09},
{0x380d, 0x70},
{0x3814, 0x11},
{0x3815, 0x11},
{0x3708, 0x64},
{0x3709, 0x12},
{0x3808, 0x07},
{0x3809, 0x80},
{0x380a, 0x04},
{0x380b, 0x38},
{0x3800, 0x01},
{0x3801, 0x5c},
{0x3802, 0x01},
{0x3803, 0xb2},
{0x3804, 0x08},
{0x3805, 0xe3},
{0x3806, 0x05},
{0x3807, 0xf1},
{0x3811, 0x04},
{0x3813, 0x02},
{0x3630, 0x2e},
{0x3632, 0xe2},
{0x3633, 0x23},
{0x3634, 0x44},
{0x3636, 0x06},
{0x3620, 0x64},
{0x3621, 0xe0},
{0x3600, 0x37},
{0x3704, 0xa0},
{0x3703, 0x5a},
{0x3715, 0x78},
{0x3717, 0x01},
{0x3731, 0x02},
{0x370b, 0x60},
{0x3705, 0x1a},
{0x3f05, 0x02},
{0x3f06, 0x10},
{0x3f01, 0x0a},
{0x3a08, 0x01},
{0x3a09, 0x4b},
{0x3a0a, 0x01},
{0x3a0b, 0x13},
{0x3a0d, 0x04},
{0x3a0e, 0x03},
{0x3a0f, 0x58},
{0x3a10, 0x50},
{0x3a1b, 0x58},
{0x3a1e, 0x50},
{0x3a11, 0x60},
{0x3a1f, 0x28},
{0x4001, 0x02},
{0x4004, 0x04},
{0x4000, 0x09},
{0x4837, 0x19},
{0x4800, 0x34},
{0x3503, 0x03},
{0x0100, 0x01},
};
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static struct regval_list ov5647_2x2binned_10bit[] = {
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{0x0100, 0x00},
{0x0103, 0x01},
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{0x3034, 0x1A},
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{0x3035, 0x21},
{0x3036, 0x62},
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{0x303C, 0x11},
{0x3106, 0xF5},
{0x3827, 0xEC},
{0x370C, 0x03},
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{0x3612, 0x59},
{0x3618, 0x00},
{0x5000, 0x06},
{0x5002, 0x41},
{0x5003, 0x08},
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{0x5A00, 0x08},
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{0x3000, 0x00},
{0x3001, 0x00},
{0x3002, 0x00},
{0x3016, 0x08},
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{0x3017, 0xE0},
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{0x3018, 0x44},
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{0x301C, 0xF8},
{0x301D, 0xF0},
{0x3A18, 0x00},
{0x3A19, 0xF8},
{0x3C01, 0x80},
{0x3B07, 0x0C},
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{0x3800, 0x00},
{0x3801, 0x00},
{0x3802, 0x00},
{0x3803, 0x00},
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{0x3804, 0x0A},
{0x3805, 0x3F},
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{0x3806, 0x07},
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{0x3807, 0xA3},
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{0x3808, 0x05},
{0x3809, 0x10},
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{0x380A, 0x03},
{0x380B, 0xCC},
{0x380C, 0x07},
{0x380D, 0x68},
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{0x3811, 0x0c},
{0x3813, 0x06},
{0x3814, 0x31},
{0x3815, 0x31},
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{0x3630, 0x2E},
{0x3632, 0xE2},
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{0x3633, 0x23},
{0x3634, 0x44},
{0x3636, 0x06},
{0x3620, 0x64},
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{0x3621, 0xE0},
initial commit
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{0x3600, 0x37},
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{0x3704, 0xA0},
{0x3703, 0x5A},
initial commit
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{0x3715, 0x78},
{0x3717, 0x01},
{0x3731, 0x02},
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{0x370B, 0x60},
{0x3705, 0x1A},
{0x3F05, 0x02},
{0x3F06, 0x10},
{0x3F01, 0x0A},
{0x3A08, 0x01},
{0x3A09, 0x28},
{0x3A0A, 0x00},
{0x3A0B, 0xF6},
{0x3A0D, 0x08},
{0x3A0E, 0x06},
{0x3A0F, 0x58},
{0x3A10, 0x50},
{0x3A1B, 0x58},
{0x3A1E, 0x50},
{0x3A11, 0x60},
{0x3A1F, 0x28},
initial commit
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{0x4001, 0x02},
{0x4004, 0x04},
{0x4000, 0x09},
{0x4837, 0x16},
{0x4800, 0x24},
{0x3503, 0x03},
{0x3820, 0x41},
{0x3821, 0x07},
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{0x350A, 0x00},
{0x350B, 0x10},
initial commit
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{0x3500, 0x00},
Pick me up in the school bus!
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{0x3501, 0x1A},
{0x3502, 0xF0},
{0x3212, 0xA0},
initial commit
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{0x0100, 0x01},
};
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static struct regval_list ov5647_640x480_10bit[] = {
initial commit
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{0x0100, 0x00},
{0x0103, 0x01},
{0x3035, 0x11},
{0x3036, 0x46},
{0x303c, 0x11},
{0x3821, 0x07},
{0x3820, 0x41},
{0x370c, 0x03},
{0x3612, 0x59},
{0x3618, 0x00},
{0x5000, 0x06},
{0x5003, 0x08},
{0x5a00, 0x08},
{0x3000, 0xff},
{0x3001, 0xff},
{0x3002, 0xff},
{0x301d, 0xf0},
{0x3a18, 0x00},
{0x3a19, 0xf8},
{0x3c01, 0x80},
{0x3b07, 0x0c},
{0x380c, 0x07},
{0x380d, 0x3c},
{0x3814, 0x35},
{0x3815, 0x35},
{0x3708, 0x64},
{0x3709, 0x52},
{0x3808, 0x02},
{0x3809, 0x80},
{0x380a, 0x01},
{0x380b, 0xe0},
{0x3800, 0x00},
{0x3801, 0x10},
{0x3802, 0x00},
{0x3803, 0x00},
{0x3804, 0x0a},
{0x3805, 0x2f},
{0x3806, 0x07},
{0x3807, 0x9f},
{0x3630, 0x2e},
{0x3632, 0xe2},
{0x3633, 0x23},
{0x3634, 0x44},
{0x3620, 0x64},
{0x3621, 0xe0},
{0x3600, 0x37},
{0x3704, 0xa0},
{0x3703, 0x5a},
{0x3715, 0x78},
{0x3717, 0x01},
{0x3731, 0x02},
{0x370b, 0x60},
{0x3705, 0x1a},
{0x3f05, 0x02},
{0x3f06, 0x10},
{0x3f01, 0x0a},
{0x3a08, 0x01},
{0x3a09, 0x2e},
{0x3a0a, 0x00},
{0x3a0b, 0xfb},
{0x3a0d, 0x02},
{0x3a0e, 0x01},
{0x3a0f, 0x58},
{0x3a10, 0x50},
{0x3a1b, 0x58},
{0x3a1e, 0x50},
{0x3a11, 0x60},
{0x3a1f, 0x28},
{0x4001, 0x02},
{0x4004, 0x02},
{0x4000, 0x09},
{0x3000, 0x00},
{0x3001, 0x00},
{0x3002, 0x00},
{0x3017, 0xe0},
{0x301c, 0xfc},
{0x3636, 0x06},
{0x3016, 0x08},
{0x3827, 0xec},
{0x3018, 0x44},
{0x3035, 0x21},
{0x3106, 0xf5},
{0x3034, 0x1a},
{0x301c, 0xf8},
{0x4800, 0x34},
{0x3503, 0x03},
{0x0100, 0x01},
};
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static struct ov5647_mode supported_modes_8bit[] = {
/*
* MODE 0: Original 8-bit VGA mode.
* Uncentred crop (top left quarter) from 2x2 binned 1296x972 image.
*/
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{
.format = {
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.code = MEDIA_BUS_FMT_SBGGR8_1X8,
.colorspace = V4L2_COLORSPACE_SRGB,
.field = V4L2_FIELD_NONE,
.width = 640,
.height = 480
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},
.crop = {
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.left = OV5647_PIXEL_ARRAY_LEFT,
.top = OV5647_PIXEL_ARRAY_TOP,
.width = 1280,
.height = 960,
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},
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.pixel_rate = 77291670,
.hts = 1896,
.vts_def = 0x3d8,
.reg_list = ov5647_640x480_8bit,
.num_regs = ARRAY_SIZE(ov5647_640x480_8bit)
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},
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};
static struct ov5647_mode supported_modes_10bit[] = {
/*
* MODE 0: 2592x1944 full resolution full FOV 10-bit mode.
*/
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{
.format = {
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.code = MEDIA_BUS_FMT_SBGGR10_1X10,
.colorspace = V4L2_COLORSPACE_SRGB,
.field = V4L2_FIELD_NONE,
.width = 2592,
.height = 1944
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},
.crop = {
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.left = OV5647_PIXEL_ARRAY_LEFT,
.top = OV5647_PIXEL_ARRAY_TOP,
.width = 2592,
.height = 1944
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},
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.pixel_rate = 87500000,
.hts = 2844,
.vts_def = 0x7b0,
.reg_list = ov5647_2592x1944_10bit,
.num_regs = ARRAY_SIZE(ov5647_2592x1944_10bit)
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},
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/*
* MODE 1: 1080p30 10-bit mode.
* Full resolution centre-cropped down to 1080p.
*/
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{
.format = {
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.code = MEDIA_BUS_FMT_SBGGR10_1X10,
.colorspace = V4L2_COLORSPACE_SRGB,
.field = V4L2_FIELD_NONE,
.width = 1920,
.height = 1080
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},
.crop = {
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.left = 364,
.top = 450,
.width = 1928,
.height = 1080,
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},
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.pixel_rate = 81666700,
.hts = 2416,
.vts_def = 0x450,
.reg_list = ov5647_1080p30_10bit,
.num_regs = ARRAY_SIZE(ov5647_1080p30_10bit)
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},
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/*
* MODE 2: 2x2 binned full FOV 10-bit mode.
*/
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{
.format = {
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.code = MEDIA_BUS_FMT_SBGGR10_1X10,
.colorspace = V4L2_COLORSPACE_SRGB,
.field = V4L2_FIELD_NONE,
.width = 1296,
.height = 972
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},
.crop = {
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.left = OV5647_PIXEL_ARRAY_LEFT,
.top = OV5647_PIXEL_ARRAY_TOP,
.width = 2592,
.height = 1944,
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},
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.pixel_rate = 81666700,
.hts = 1896,
.vts_def = 0x59b,
.reg_list = ov5647_2x2binned_10bit,
.num_regs = ARRAY_SIZE(ov5647_2x2binned_10bit)
},
/*
* MODE 3: 10-bit VGA full FOV mode 60fps.
* 2x2 binned and subsampled down to VGA.
*/
{
.format = {
.code = MEDIA_BUS_FMT_SBGGR10_1X10,
.colorspace = V4L2_COLORSPACE_SRGB,
.field = V4L2_FIELD_NONE,
.width = 640,
.height = 480
},
.crop = {
.left = OV5647_PIXEL_ARRAY_LEFT,
.top = OV5647_PIXEL_ARRAY_TOP,
.width = 2560,
.height = 1920,
},
.pixel_rate = 55000000,
.hts = 1852,
.vts_def = 0x1f8,
.reg_list = ov5647_640x480_10bit,
.num_regs = ARRAY_SIZE(ov5647_640x480_10bit)
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},
};
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/* Use 2x2 binned 10-bit mode as default. */
#define OV5647_DEFAULT_MODE (&supported_modes_10bit[2])
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static int ov5647_write16(struct v4l2_subdev *sd, u16 reg, u16 val)
{
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int ret;
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unsigned char data[4] = { reg >> 8, reg & 0xff, val >> 8, val & 0xff};
struct i2c_client *client = v4l2_get_subdevdata(sd);
ret = i2c_master_send(client, data, 4);
/*
* Writing the wrong number of bytes also needs to be flagged as an
* error. Success needs to produce a 0 return code.
*/
if (ret == 4) {
ret = 0;
} else {
dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n",
__func__, reg);
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if (ret >= 0)
ret = -EINVAL;
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}
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return ret;
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}
static int ov5647_write(struct v4l2_subdev *sd, u16 reg, u8 val)
{
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int ret;
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unsigned char data[3] = { reg >> 8, reg & 0xff, val};
struct i2c_client *client = v4l2_get_subdevdata(sd);
ret = i2c_master_send(client, data, 3);
/*
* Writing the wrong number of bytes also needs to be flagged as an
* error. Success needs to produce a 0 return code.
*/
if (ret == 3) {
ret = 0;
} else {
dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n",
__func__, reg);
if (ret >= 0)
ret = -EINVAL;
}
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return ret;
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}
static int ov5647_read(struct v4l2_subdev *sd, u16 reg, u8 *val)
{
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int ret;
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unsigned char data_w[2] = { reg >> 8, reg & 0xff };
struct i2c_client *client = v4l2_get_subdevdata(sd);
ret = i2c_master_send(client, data_w, 2);
/*
* A negative return code, or sending the wrong number of bytes, both
* count as an error.
*/
if (ret != 2) {
dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n",
__func__, reg);
if (ret >= 0)
ret = -EINVAL;
return ret;
}
ret = i2c_master_recv(client, val, 1);
/*
* The only return value indicating success is 1. Anything else, even
* a non-negative value, indicates something went wrong.
*/
if (ret == 1) {
ret = 0;
} else {
dev_dbg(&client->dev, "%s: i2c read error, reg: %x\n",
__func__, reg);
if (ret >= 0)
ret = -EINVAL;
}
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return ret;
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}
static int ov5647_write_array(struct v4l2_subdev *sd,
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struct regval_list *regs, int array_size)
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{
int i, ret;
for (i = 0; i < array_size; i++) {
ret = ov5647_write(sd, regs[i].addr, regs[i].data);
if (ret < 0)
return ret;
}
return 0;
}
static int ov5647_set_virtual_channel(struct v4l2_subdev *sd, int channel)
{
u8 channel_id;
int ret;
ret = ov5647_read(sd, OV5647_REG_MIPI_CTRL14, &channel_id);
if (ret < 0)
return ret;
channel_id &= ~(3 << 6);
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return ov5647_write(sd, OV5647_REG_MIPI_CTRL14, channel_id | (channel << 6));
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}
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static int __sensor_init(struct v4l2_subdev *sd)
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{
int ret;
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u8 resetval, rdval;
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov5647 *state = to_state(sd);
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ret = ov5647_read(sd, OV5647_SW_STANDBY, &rdval);
if (ret < 0)
return ret;
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if (state->write_mode_regs) {
ret = ov5647_write_array(sd, state->mode->reg_list,
state->mode->num_regs);
if (ret < 0) {
dev_err(&client->dev, "write sensor default regs error\n");
return ret;
}
state->write_mode_regs = false;
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}
ret = ov5647_set_virtual_channel(sd, 0);
if (ret < 0)
return ret;
ret = ov5647_read(sd, OV5647_SW_STANDBY, &resetval);
if (ret < 0)
return ret;
if (!(resetval & 0x01)) {
dev_err(&client->dev, "Device was in SW standby");
ret = ov5647_write(sd, OV5647_SW_STANDBY, 0x01);
if (ret < 0)
return ret;
}
return 0;
}
static int ov5647_stream_on(struct v4l2_subdev *sd)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
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struct ov5647 *ov5647 = to_state(sd);
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u8 val = MIPI_CTRL00_BUS_IDLE;
int ret;
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ret = __sensor_init(sd);
if (ret < 0) {
dev_err(&client->dev, "sensor_init failed\n");
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return ret;
}
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/* Apply customized values from user when stream starts */
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ret = __v4l2_ctrl_handler_setup(sd->ctrl_handler);
if (ret)
return ret;
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if (ov5647->flags & V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK)
initial commit
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val |= MIPI_CTRL00_CLOCK_LANE_GATE |
MIPI_CTRL00_LINE_SYNC_ENABLE;
ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, val);
if (ret < 0)
return ret;
ret = ov5647_write(sd, OV5647_REG_FRAME_OFF_NUMBER, 0x00);
if (ret < 0)
return ret;
return ov5647_write(sd, OV5640_REG_PAD_OUT, 0x00);
}
static int ov5647_stream_off(struct v4l2_subdev *sd)
{
int ret;
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ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, MIPI_CTRL00_CLOCK_LANE_GATE
| MIPI_CTRL00_BUS_IDLE | MIPI_CTRL00_CLOCK_LANE_DISABLE);
initial commit
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if (ret < 0)
return ret;
ret = ov5647_write(sd, OV5647_REG_FRAME_OFF_NUMBER, 0x0f);
if (ret < 0)
return ret;
return ov5647_write(sd, OV5640_REG_PAD_OUT, 0x01);
}
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static int set_sw_standby(struct v4l2_subdev *sd, bool standby)
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{
int ret;
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u8 rdval;
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ret = ov5647_read(sd, OV5647_SW_STANDBY, &rdval);
if (ret < 0)
return ret;
initial commit
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if (standby)
rdval &= ~0x01;
else
rdval |= 0x01;
initial commit
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return ov5647_write(sd, OV5647_SW_STANDBY, rdval);
}
initial commit
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static int ov5647_sensor_power(struct v4l2_subdev *sd, int on)
{
int ret = 0;
struct ov5647 *ov5647 = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
initial commit
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mutex_lock(&ov5647->lock);
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if (on && !ov5647->power_count) {
dev_dbg(&client->dev, "OV5647 power on\n");
initial commit
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if (ov5647->pwdn) {
gpiod_set_value_cansleep(ov5647->pwdn, 0);
msleep(PWDN_ACTIVE_DELAY_MS);
}
initial commit
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ret = clk_prepare_enable(ov5647->xclk);
if (ret < 0) {
dev_err(&client->dev, "clk prepare enable failed\n");
goto out;
}
initial commit
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ret = ov5647_write_array(sd, sensor_oe_enable_regs,
ARRAY_SIZE(sensor_oe_enable_regs));
if (ret < 0) {
clk_disable_unprepare(ov5647->xclk);
dev_err(&client->dev,
"write sensor_oe_enable_regs error\n");
goto out;
}
initial commit
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/*
* Ensure streaming off to make clock lane go into LP-11 state.
*/
ret = ov5647_stream_off(sd);
if (ret < 0) {
clk_disable_unprepare(ov5647->xclk);
dev_err(&client->dev,
"Camera not available, check Power\n");
goto out;
}
initial commit
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/* Write out the register set over I2C on stream-on. */
ov5647->write_mode_regs = true;
} else if (!on && ov5647->power_count == 1) {
dev_dbg(&client->dev, "OV5647 power off\n");
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ret = ov5647_write_array(sd, sensor_oe_disable_regs,
ARRAY_SIZE(sensor_oe_disable_regs));
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if (ret < 0)
dev_dbg(&client->dev, "disable oe failed\n");
initial commit
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ret = set_sw_standby(sd, true);
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if (ret < 0)
dev_dbg(&client->dev, "soft stby failed\n");
clk_disable_unprepare(ov5647->xclk);
gpiod_set_value_cansleep(ov5647->pwdn, 1);
}
/* Update the power count. */
ov5647->power_count += on ? 1 : -1;
WARN_ON(ov5647->power_count < 0);
out:
mutex_unlock(&ov5647->lock);
return ret;
initial commit
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}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int ov5647_sensor_get_register(struct v4l2_subdev *sd,
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struct v4l2_dbg_register *reg)
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{
u8 val;
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int ret;
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ret = ov5647_read(sd, reg->reg & 0xff, &val);
if (ret < 0)
return ret;
reg->val = val;
reg->size = 1;
return 0;
}
static int ov5647_sensor_set_register(struct v4l2_subdev *sd,
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const struct v4l2_dbg_register *reg)
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{
return ov5647_write(sd, reg->reg & 0xff, reg->val & 0xff);
}
#endif
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/*
* Subdev core operations registration
*/
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static const struct v4l2_subdev_core_ops ov5647_subdev_core_ops = {
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.s_power = ov5647_sensor_power,
initial commit
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#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = ov5647_sensor_get_register,
.s_register = ov5647_sensor_set_register,
#endif
.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
.unsubscribe_event = v4l2_event_subdev_unsubscribe,
};
static const struct v4l2_rect *
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__ov5647_get_pad_crop(struct ov5647 *ov5647, struct v4l2_subdev_pad_config *cfg,
initial commit
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unsigned int pad, enum v4l2_subdev_format_whence which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
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return v4l2_subdev_get_try_crop(&ov5647->sd, cfg, pad);
initial commit
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case V4L2_SUBDEV_FORMAT_ACTIVE:
return &ov5647->mode->crop;
}
return NULL;
}
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static int ov5647_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_selection *sel)
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{
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switch (sel->target) {
case V4L2_SEL_TGT_CROP: {
struct ov5647 *state = to_state(sd);
mutex_lock(&state->lock);
sel->r = *__ov5647_get_pad_crop(state, cfg, sel->pad,
sel->which);
mutex_unlock(&state->lock);
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return 0;
}
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case V4L2_SEL_TGT_NATIVE_SIZE:
sel->r.top = 0;
sel->r.left = 0;
sel->r.width = OV5647_NATIVE_WIDTH;
sel->r.height = OV5647_NATIVE_HEIGHT;
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return 0;
case V4L2_SEL_TGT_CROP_DEFAULT:
case V4L2_SEL_TGT_CROP_BOUNDS:
sel->r.top = OV5647_PIXEL_ARRAY_TOP;
sel->r.left = OV5647_PIXEL_ARRAY_LEFT;
sel->r.width = OV5647_PIXEL_ARRAY_WIDTH;
sel->r.height = OV5647_PIXEL_ARRAY_HEIGHT;
return 0;
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}
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return -EINVAL;
}
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static int ov5647_s_stream(struct v4l2_subdev *sd, int enable)
{
struct ov5647 *state = to_state(sd);
int ret = 0;
mutex_lock(&state->lock);
if (enable)
ret = ov5647_stream_on(sd);
else
ret = ov5647_stream_off(sd);
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mutex_unlock(&state->lock);
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return ret;
}
static const struct v4l2_subdev_video_ops ov5647_subdev_video_ops = {
.s_stream = ov5647_s_stream,
};
static int ov5647_enum_mbus_code(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
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{
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if (code->index == 0 && ARRAY_SIZE(supported_modes_8bit))
code->code = MEDIA_BUS_FMT_SBGGR8_1X8;
else if (code->index == 0 && ARRAY_SIZE(supported_modes_8bit) == 0 &&
ARRAY_SIZE(supported_modes_10bit))
code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
else if (code->index == 1 && ARRAY_SIZE(supported_modes_8bit) &&
ARRAY_SIZE(supported_modes_10bit))
code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
else
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return -EINVAL;
return 0;
}
static int ov5647_enum_frame_size(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_frame_size_enum *fse)
{
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struct ov5647_mode *mode = NULL;
if (fse->code == MEDIA_BUS_FMT_SBGGR8_1X8) {
if (fse->index >= ARRAY_SIZE(supported_modes_8bit))
return -EINVAL;
mode = &supported_modes_8bit[fse->index];
} else if (fse->code == MEDIA_BUS_FMT_SBGGR10_1X10) {
if (fse->index >= ARRAY_SIZE(supported_modes_10bit))
return -EINVAL;
mode = &supported_modes_10bit[fse->index];
} else {
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return -EINVAL;
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}
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fse->min_width = mode->format.width;
fse->max_width = fse->min_width;
fse->min_height = mode->format.height;
fse->max_height = fse->min_height;
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return 0;
}
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static int ov5647_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
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{
struct v4l2_mbus_framefmt *fmt = &format->format;
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struct ov5647 *state = to_state(sd);
struct v4l2_mbus_framefmt *framefmt;
const struct ov5647_mode *mode_8bit, *mode_10bit, *mode = NULL;
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if (format->pad != 0)
return -EINVAL;
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mutex_lock(&state->lock);
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/*
* Try to respect any given pixel format, otherwise try for a 10-bit
* mode.
*/
mode_8bit = v4l2_find_nearest_size(supported_modes_8bit,
ARRAY_SIZE(supported_modes_8bit),
format.width, format.height,
format->format.width,
format->format.height);
mode_10bit = v4l2_find_nearest_size(supported_modes_10bit,
ARRAY_SIZE(supported_modes_10bit),
format.width, format.height,
format->format.width,
format->format.height);
if (format->format.code == MEDIA_BUS_FMT_SBGGR8_1X8 && mode_8bit)
mode = mode_8bit;
else if (format->format.code == MEDIA_BUS_FMT_SBGGR10_1X10 &&
mode_10bit)
mode = mode_10bit;
else if (mode_10bit)
mode = mode_10bit;
else
mode = mode_8bit;
if (!mode) {
mutex_unlock(&state->lock);
return -EINVAL;
}
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*fmt = mode->format;
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if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
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framefmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
*framefmt = format->format;
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} else {
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/*
* If we have changed modes, write the I2C register list on
* a stream_on().
*/
int exposure_max, exposure_def, hblank;
if (state->mode != mode)
state->write_mode_regs = true;
state->mode = mode;
__v4l2_ctrl_modify_range(state->pixel_rate,
mode->pixel_rate,
mode->pixel_rate, 1,
mode->pixel_rate);
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hblank = mode->hts - mode->format.width;
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__v4l2_ctrl_modify_range(state->hblank, hblank, hblank, 1,
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hblank);
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__v4l2_ctrl_modify_range(state->vblank,
OV5647_VBLANK_MIN,
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OV5647_VTS_MAX - mode->format.height,
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1,
mode->vts_def - mode->format.height);
__v4l2_ctrl_s_ctrl(state->vblank,
mode->vts_def - mode->format.height);
exposure_max = mode->vts_def - 4;
exposure_def = (exposure_max < OV5647_EXPOSURE_DEFAULT) ?
exposure_max : OV5647_EXPOSURE_DEFAULT;
__v4l2_ctrl_modify_range(state->exposure,
state->exposure->minimum,
exposure_max,
state->exposure->step,
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exposure_def);
}
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mutex_unlock(&state->lock);
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return 0;
}
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static int ov5647_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
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{
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struct v4l2_mbus_framefmt *fmt = &format->format;
struct ov5647 *state = to_state(sd);
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if (format->pad != 0)
return -EINVAL;
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mutex_lock(&state->lock);
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if (format->which == V4L2_SUBDEV_FORMAT_TRY)
*fmt = *v4l2_subdev_get_try_format(sd, cfg, format->pad);
else
*fmt = state->mode->format;
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mutex_unlock(&state->lock);
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return 0;
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}
static const struct v4l2_subdev_pad_ops ov5647_subdev_pad_ops = {
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.enum_mbus_code = ov5647_enum_mbus_code,
.set_fmt = ov5647_set_fmt,
.get_fmt = ov5647_get_fmt,
.get_selection = ov5647_get_selection,
.enum_frame_size = ov5647_enum_frame_size,
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};
static const struct v4l2_subdev_ops ov5647_subdev_ops = {
.core = &ov5647_subdev_core_ops,
.video = &ov5647_subdev_video_ops,
.pad = &ov5647_subdev_pad_ops,
};
static int ov5647_detect(struct v4l2_subdev *sd)
{
u8 read;
int ret;
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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ret = ov5647_write(sd, OV5647_SW_RESET, 0x01);
if (ret < 0)
return ret;
ret = ov5647_read(sd, OV5647_REG_CHIPID_H, &read);
if (ret < 0)
return ret;
if (read != 0x56) {
dev_err(&client->dev, "ID High expected 0x56 got %x", read);
return -ENODEV;
}
ret = ov5647_read(sd, OV5647_REG_CHIPID_L, &read);
if (ret < 0)
return ret;
if (read != 0x47) {
dev_err(&client->dev, "ID Low expected 0x47 got %x", read);
return -ENODEV;
}
return ov5647_write(sd, OV5647_SW_RESET, 0x00);
}
static int ov5647_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct v4l2_mbus_framefmt *format =
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v4l2_subdev_get_try_format(sd, fh->pad, 0);
struct v4l2_rect *crop =
v4l2_subdev_get_try_crop(sd, fh->pad, 0);
struct ov5647 *state = to_state(sd);
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crop->left = OV5647_PIXEL_ARRAY_LEFT;
crop->top = OV5647_PIXEL_ARRAY_TOP;
crop->width = OV5647_PIXEL_ARRAY_WIDTH;
crop->height = OV5647_PIXEL_ARRAY_HEIGHT;
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/* Set the default format to the same as the sensor. */
*format = state->mode->format;
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return 0;
}
static const struct v4l2_subdev_internal_ops ov5647_subdev_internal_ops = {
.open = ov5647_open,
};
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static int ov5647_parse_dt(struct device_node *np, struct ov5647 *sensor)
{
struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
struct device_node *ep;
int ret;
ep = of_graph_get_next_endpoint(np, NULL);
if (!ep)
return -EINVAL;
ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &bus_cfg);
if (!ret)
sensor->flags = bus_cfg.bus.mipi_csi2.flags;
of_node_put(ep);
return ret;
}
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static int ov5647_s_auto_white_balance(struct v4l2_subdev *sd, u32 val)
{
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/* non-zero turns on AWB */
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return ov5647_write(sd, OV5647_REG_AWB, val ? 1 : 0);
}
static int ov5647_s_autogain(struct v4l2_subdev *sd, u32 val)
{
int ret;
u8 reg;
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/* non-zero turns on AGC by clearing bit 1 */
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ret = ov5647_read(sd, OV5647_REG_AEC_AGC, &reg);
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if (ret == 0)
ret = ov5647_write(sd, OV5647_REG_AEC_AGC,
val ? reg & ~2 : reg | 2);
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return ret;
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}
static int ov5647_s_exposure_auto(struct v4l2_subdev *sd, u32 val)
{
int ret;
u8 reg;
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/* Everything except V4L2_EXPOSURE_MANUAL turns on AEC by
* clearing bit 0
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*/
ret = ov5647_read(sd, OV5647_REG_AEC_AGC, &reg);
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if (ret == 0)
ret = ov5647_write(sd, OV5647_REG_AEC_AGC,
val == V4L2_EXPOSURE_MANUAL ?
reg | 1 : reg & ~1);
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return ret;
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}
static int ov5647_s_analogue_gain(struct v4l2_subdev *sd, u32 val)
{
int ret;
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/* 10 bits of gain, 2 in the high register */
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ret = ov5647_write(sd, OV5647_REG_GAIN_HI, (val >> 8) & 3);
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if (ret == 0)
ret = ov5647_write(sd, OV5647_REG_GAIN_LO, val & 0xff);
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return ret;
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}
static int ov5647_s_exposure(struct v4l2_subdev *sd, u32 val)
{
int ret;
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/* Sensor has 20 bits, but the bottom 4 bits are fractions of a line
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* which we leave as zero (and don't receive in "val").
*/
ret = ov5647_write(sd, OV5647_REG_EXP_HI, (val >> 12) & 0xf);
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if (ret == 0)
ov5647_write(sd, OV5647_REG_EXP_MID, (val >> 4) & 0xff);
if (ret == 0)
ov5647_write(sd, OV5647_REG_EXP_LO, (val & 0xf) << 4);
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return ret;
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}
static int ov5647_s_ctrl(struct v4l2_ctrl *ctrl)
{
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struct ov5647 *state = container_of(ctrl->handler,
struct ov5647, ctrls);
struct v4l2_subdev *sd = &state->sd;
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struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret = 0;
/* v4l2_ctrl_lock() locks our own mutex */
if (ctrl->id == V4L2_CID_VBLANK) {
int exposure_max, exposure_def;
/* Update max exposure while meeting expected vblanking */
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exposure_max = state->mode->format.height + ctrl->val - 4;
exposure_def = (exposure_max < OV5647_EXPOSURE_DEFAULT) ?
exposure_max : OV5647_EXPOSURE_DEFAULT;
__v4l2_ctrl_modify_range(state->exposure,
state->exposure->minimum,
exposure_max, state->exposure->step,
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exposure_def);
}
/*
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* If the device is not powered up by the host driver do
* not apply any controls to H/W at this time. Instead
* the controls will be restored right after power-up.
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*/
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if (state->power_count == 0)
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return 0;
switch (ctrl->id) {
case V4L2_CID_AUTO_WHITE_BALANCE:
ret = ov5647_s_auto_white_balance(sd, ctrl->val);
break;
case V4L2_CID_AUTOGAIN:
ret = ov5647_s_autogain(sd, ctrl->val);
break;
case V4L2_CID_EXPOSURE_AUTO:
ret = ov5647_s_exposure_auto(sd, ctrl->val);
break;
case V4L2_CID_ANALOGUE_GAIN:
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ret = ov5647_s_analogue_gain(sd, ctrl->val);
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break;
case V4L2_CID_EXPOSURE:
ret = ov5647_s_exposure(sd, ctrl->val);
break;
case V4L2_CID_PIXEL_RATE:
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/* Read-only, but we adjust it based on mode. */
break;
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case V4L2_CID_HBLANK:
/* Read-only, but we adjust it based on mode. */
break;
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case V4L2_CID_VBLANK:
ret = ov5647_write16(sd, OV5647_REG_VTS_HI,
state->mode->format.height + ctrl->val);
break;
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default:
dev_info(&client->dev,
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"ctrl(id:0x%x,val:0x%x) is not handled\n",
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ctrl->id, ctrl->val);
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ret = -EINVAL;
break;
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}
return ret;
}
static const struct v4l2_ctrl_ops ov5647_ctrl_ops = {
.s_ctrl = ov5647_s_ctrl,
};
static int ov5647_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct ov5647 *sensor;
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int ret;
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struct v4l2_subdev *sd;
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struct device_node *np = client->dev.of_node;
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u32 xclk_freq;
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int hblank, exposure_max, exposure_def;
struct v4l2_fwnode_device_properties props;
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sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
if (!sensor)
return -ENOMEM;
if (IS_ENABLED(CONFIG_OF) && np) {
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ret = ov5647_parse_dt(np, sensor);
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if (ret) {
dev_err(dev, "DT parsing error: %d\n", ret);
return ret;
}
}
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/* get system clock (xclk) */
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sensor->xclk = devm_clk_get(dev, NULL);
if (IS_ERR(sensor->xclk)) {
dev_err(dev, "could not get xclk");
return PTR_ERR(sensor->xclk);
}
xclk_freq = clk_get_rate(sensor->xclk);
if (xclk_freq != 25000000) {
dev_err(dev, "Unsupported clock frequency: %u\n", xclk_freq);
return -EINVAL;
}
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/* Request the power down GPIO asserted */
sensor->pwdn = devm_gpiod_get_optional(&client->dev, "pwdn",
GPIOD_OUT_HIGH);
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mutex_init(&sensor->lock);
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/* Initialise controls. */
v4l2_ctrl_handler_init(&sensor->ctrls, 9);
v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
V4L2_CID_AUTOGAIN,
0, /* min */
1, /* max */
1, /* step */
0); /* default */
v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
V4L2_CID_AUTO_WHITE_BALANCE,
0, /* min */
1, /* max */
1, /* step */
0); /* default */
v4l2_ctrl_new_std_menu(&sensor->ctrls, &ov5647_ctrl_ops,
V4L2_CID_EXPOSURE_AUTO,
V4L2_EXPOSURE_MANUAL, /* max */
0, /* skip_mask */
V4L2_EXPOSURE_MANUAL); /* default */
v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
V4L2_CID_ANALOGUE_GAIN,
16, /* min, 16 = 1.0x */
1023, /* max (10 bits) */
1, /* step */
32); /* default, 32 = 2.0x */
/* Set the default mode before we init the subdev */
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sensor->mode = OV5647_DEFAULT_MODE;
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exposure_max = sensor->mode->vts_def - 4;
exposure_def = (exposure_max < OV5647_EXPOSURE_DEFAULT) ?
exposure_max : OV5647_EXPOSURE_DEFAULT;
sensor->exposure = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
V4L2_CID_EXPOSURE,
OV5647_EXPOSURE_MIN, exposure_max,
OV5647_EXPOSURE_STEP,
exposure_def);
/* By default, PIXEL_RATE is read only, but it does change per mode */
sensor->pixel_rate = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
V4L2_CID_PIXEL_RATE,
sensor->mode->pixel_rate,
sensor->mode->pixel_rate, 1,
sensor->mode->pixel_rate);
/* By default, HBLANK is read only, but it does change per mode */
hblank = sensor->mode->hts - sensor->mode->format.width;
sensor->hblank = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
V4L2_CID_HBLANK, hblank, hblank, 1,
hblank);
sensor->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
sensor->vblank = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
V4L2_CID_VBLANK, OV5647_VBLANK_MIN,
OV5647_VTS_MAX -
sensor->mode->format.height, 1,
sensor->mode->vts_def -
sensor->mode->format.height);
if (sensor->ctrls.error) {
ret = sensor->ctrls.error;
dev_err(&client->dev, "%s control init failed (%d)\n",
__func__, ret);
goto error;
}
ret = v4l2_fwnode_device_parse(&client->dev, &props);
if (ret)
goto error;
ret = v4l2_ctrl_new_fwnode_properties(&sensor->ctrls, &ov5647_ctrl_ops,
&props);
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if (ret)
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goto error;
sensor->sd.ctrl_handler = &sensor->ctrls;
/* Write out the register set over I2C on stream-on. */
sensor->write_mode_regs = true;
initial commit
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sd = &sensor->sd;
v4l2_i2c_subdev_init(sd, client, &ov5647_subdev_ops);
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sensor->sd.internal_ops = &ov5647_subdev_internal_ops;
sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
V4L2_SUBDEV_FL_HAS_EVENTS;
initial commit
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sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, 1, &sensor->pad);
if (ret < 0)
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goto mutex_remove;
initial commit
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if (sensor->pwdn) {
gpiod_set_value_cansleep(sensor->pwdn, 0);
msleep(PWDN_ACTIVE_DELAY_MS);
}
initial commit
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ret = ov5647_detect(sd);
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gpiod_set_value_cansleep(sensor->pwdn, 1);
initial commit
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if (ret < 0)
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goto error;
initial commit
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ret = v4l2_async_register_subdev(sd);
if (ret < 0)
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goto error;
initial commit
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dev_dbg(dev, "OmniVision OV5647 camera driver probed\n");
return 0;
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error:
initial commit
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media_entity_cleanup(&sd->entity);
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mutex_remove:
initial commit
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v4l2_ctrl_handler_free(&sensor->ctrls);
mutex_destroy(&sensor->lock);
return ret;
}
static int ov5647_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
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struct ov5647 *ov5647 = to_state(sd);
initial commit
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v4l2_async_unregister_subdev(&ov5647->sd);
media_entity_cleanup(&ov5647->sd.entity);
v4l2_ctrl_handler_free(&ov5647->ctrls);
initial commit
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v4l2_device_unregister_subdev(sd);
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mutex_destroy(&ov5647->lock);
initial commit
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return 0;
}
static const struct i2c_device_id ov5647_id[] = {
{ "ov5647", 0 },
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{ }
initial commit
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};
MODULE_DEVICE_TABLE(i2c, ov5647_id);
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id ov5647_of_match[] = {
{ .compatible = "ovti,ov5647" },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, ov5647_of_match);
#endif
static struct i2c_driver ov5647_driver = {
.driver = {
.of_match_table = of_match_ptr(ov5647_of_match),
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.name = SENSOR_NAME,
initial commit
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},
.probe_new = ov5647_probe,
.remove = ov5647_remove,
.id_table = ov5647_id,
};
module_i2c_driver(ov5647_driver);
MODULE_AUTHOR("Ramiro Oliveira <roliveir@synopsys.com>");
MODULE_DESCRIPTION("A low-level driver for OmniVision ov5647 sensors");
MODULE_LICENSE("GPL v2");
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