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android13/kernel-5.10/drivers/media/i2c/ov5670.c

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// SPDX-License-Identifier: GPL-2.0
/*
* ov5670 driver
*
* Copyright (C) 2019 Fuzhou Rockchip Electronics Co., Ltd.
*
* V0.0X01.0X01 add poweron function.
* V0.0X01.0X02 fix mclk issue when probe multiple camera.
* V0.0X01.0X03 add otp function.
* V0.0X01.0X04 add enum_frame_interval function.
*/
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <linux/regulator/consumer.h>
#include <linux/sysfs.h>
#include <linux/pinctrl/consumer.h>
#include <linux/version.h>
#include <media/v4l2-async.h>
#include <media/media-entity.h>
#include <media/v4l2-common.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>
#include <media/v4l2-subdev.h>
#include <linux/rk-camera-module.h>
/* verify default register values */
#define CHECK_REG_VALUE
#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x04)
#ifndef V4L2_CID_DIGITAL_GAIN
#define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN
#endif
/* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */
#define MIPI_FREQ 420000000U
#define OV5670_PIXEL_RATE (420000000LL * 2LL * 2LL / 10)
#define OV5670_XVCLK_FREQ 24000000
#define CHIP_ID 0x5670
#define OV5670_REG_CHIP_ID 0x300b
#define OV5670_REG_CTRL_MODE 0x0100
#define OV5670_MODE_SW_STANDBY 0x00
#define OV5670_MODE_STREAMING 0x01
#define OV5670_REG_EXPOSURE 0x3500
#define OV5670_EXPOSURE_MIN 4
#define OV5670_EXPOSURE_STEP 1
#define OV5670_VTS_MAX 0x7fff
#define OV5670_REG_GAIN_H 0x3508
#define OV5670_REG_GAIN_L 0x3509
#define OV5670_GAIN_L_MASK 0xff
#define OV5670_GAIN_H_MASK 0x1f
#define OV5670_GAIN_H_SHIFT 8
#define ANALOG_GAIN_MIN 0x80
#define ANALOG_GAIN_MAX 0x400
#define ANALOG_GAIN_STEP 1
#define ANALOG_GAIN_DEFAULT 1024
#define OV5670_REG_GROUP 0x3208
#define OV5670_REG_TEST_PATTERN 0x4303
#define OV5670_TEST_PATTERN_ENABLE 0x08
#define OV5670_TEST_PATTERN_DISABLE 0x0
#define OV5670_REG_VTS 0x380e
#define REG_NULL 0xFFFF
#define DELAY_MS 0xEEEE /* Array delay token */
#define OV5670_REG_VALUE_08BIT 1
#define OV5670_REG_VALUE_16BIT 2
#define OV5670_REG_VALUE_24BIT 3
#define OV5670_LANES 2
#define OV5670_BITS_PER_SAMPLE 10
#define OF_CAMERA_PINCTRL_STATE_DEFAULT "rockchip,camera_default"
#define OF_CAMERA_PINCTRL_STATE_SLEEP "rockchip,camera_sleep"
#define OV5670_NAME "ov5670"
#define RG_Ratio_Typical_Default (0x16f)
#define BG_Ratio_Typical_Default (0x16f)
#define ov5670_write_1byte(client, reg, val) \
ov5670_write_reg((client), (reg), OV5670_REG_VALUE_08BIT, (val))
#define ov5670_read_1byte(client, reg, val) \
ov5670_read_reg((client), (reg), OV5670_REG_VALUE_08BIT, (val))
struct ov5670_otp_info {
int flag; // bit[7]: info, bit[6]:wb
int module_id;
int lens_id;
int year;
int month;
int day;
int rg_ratio;
int bg_ratio;
};
static const char * const ov5670_supply_names[] = {
"avdd", /* Analog power */
"dovdd", /* Digital I/O power */
"dvdd", /* Digital core power */
};
#define OV5670_NUM_SUPPLIES ARRAY_SIZE(ov5670_supply_names)
struct regval {
u16 addr;
u8 val;
};
struct ov5670_mode {
u32 width;
u32 height;
struct v4l2_fract max_fps;
u32 hts_def;
u32 vts_def;
u32 exp_def;
const struct regval *reg_list;
};
struct ov5670 {
struct i2c_client *client;
struct clk *xvclk;
struct gpio_desc *power_gpio;
struct gpio_desc *reset_gpio;
struct gpio_desc *pwdn_gpio;
struct regulator_bulk_data supplies[OV5670_NUM_SUPPLIES];
struct pinctrl *pinctrl;
struct pinctrl_state *pins_default;
struct pinctrl_state *pins_sleep;
struct v4l2_subdev subdev;
struct media_pad pad;
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_ctrl *exposure;
struct v4l2_ctrl *anal_gain;
struct v4l2_ctrl *digi_gain;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *vblank;
struct v4l2_ctrl *test_pattern;
struct mutex mutex;
bool streaming;
bool power_on;
const struct ov5670_mode *cur_mode;
unsigned int lane_num;
unsigned int cfg_num;
unsigned int pixel_rate;
u32 module_index;
struct ov5670_otp_info *otp;
const char *module_facing;
const char *module_name;
const char *len_name;
struct rkmodule_awb_cfg awb_cfg;
};
#define to_ov5670(sd) container_of(sd, struct ov5670, subdev)
struct ov5670_id_name {
int id;
char name[RKMODULE_NAME_LEN];
};
static const struct ov5670_id_name ov5670_module_info[] = {
{0x01, "Sunny"},
{0x02, "Truly"},
{0x03, "A-kerr"},
{0x04, "LiteArray"},
{0x05, "Darling"},
{0x06, "Qtech"},
{0x07, "OFlim"},
{0x08, "Huaquan/Kingcom"},
{0x09, "Booyi"},
{0x0a, "Laimu"},
{0x0b, "WDSEN"},
{0x0c, "Sunrise"},
{0x0d, "CameraKing"},
{0x0e, "Sunniness/Riyong"},
{0x0f, "Tongju"},
{0x10, "Seasons/Sijichun"},
{0x11, "Foxconn"},
{0x12, "Importek"},
{0x13, "Altek"},
{0x14, "ABICO/Ability"},
{0x15, "Lite-on"},
{0x16, "Chicony"},
{0x17, "Primax"},
{0x18, "AVC"},
{0x19, "Suyin"},
{0x21, "Sharp"},
{0x31, "MCNEX"},
{0x32, "SEMCO"},
{0x33, "Partron"},
{0x41, "Reach/Zhongliancheng"},
{0x42, "BYD"},
{0x43, "OSTEC(AoShunChuang)"},
{0x44, "Chengli"},
{0x45, "Jiali"},
{0x46, "Chippack"},
{0x47, "RongSheng"},
{0x48, "ShineTech/ShenTai"},
{0x49, "Brodsands"},
{0x50, "Others"},
{0x00, "Unknown"}
};
static const struct ov5670_id_name ov5670_lens_info[] = {
{0x01, "Largan 40010A2"},
{0x10, "Largan 30048A1"},
{0x11, "Largan 30031A1B"},
{0x12, "Largan 40010A1"},
{0x30, "Sunny 3531A"},
{0x31, "Sunny 3531B"},
{0x32, "Sunny 3533A"},
{0x90, "Kinko 3956AH"},
{0xa0, "E-pin D517"},
{0xc0, "XuYe XA-0502B"},
{0xc8, "XuYe XA-0502A"},
{0xc9, "XuYe E009A"},
{0x00, "Unknown"}
};
/*
* Xclk 24Mhz
* Pclk 84Mhz
* linelength 2816(0xb00)
* framelength 1984(0x7c0)
* grabwindow_width 2592
* grabwindow_height 1944
* max_framerate 30fps
* mipi_datarate per lane 840Mbps
*/
static const struct regval ov5670_global_regs[] = {
{0x0103, 0x01}, //software reset
{DELAY_MS, 5},
{0x0100, 0x00}, //software standby
{0x0300, 0x04}, //PLL
{0x0301, 0x00},
{0x0302, 0x69}, //MIPI bit rate 840Mbps/lane
{0x0303, 0x00},
{0x0304, 0x03},
{0x0305, 0x01},
{0x0306, 0x01},
{0x030a, 0x00},
{0x030b, 0x00},
{0x030c, 0x00},
{0x030d, 0x1e},
{0x030e, 0x00},
{0x030f, 0x06},
{0x0312, 0x01}, //PLL
{0x3000, 0x00}, //Fsin/Vsync input
{0x3002, 0x21}, //ULPM output
{0x3005, 0xf0}, //sclk_psram on, sclk_syncfifo on
{0x3007, 0x00},
{0x3015, 0x0f}, //npump clock div = 1, disable Ppumu_clk
{0x3018, 0x32}, //MIPI 2 lane
{0x301a, 0xf0}, //sclk_stb on, sclk_ac on, slck_tc on
{0x301b, 0xf0}, //sclk_blc/isp/testmode/vfifo on
{0x301c, 0xf0}, //sclk_mipi on, sclk_dpcm on, sclk_otp on
{0x301d, 0xf0}, //sclk_asram_tst on, sclk_grp on, sclk_bist on,
{0x301e, 0xf0}, //sclk_ilpwm/lvds/vfifo/mipi on
{0x3030, 0x00}, //sclk normal, pclk normal
{0x3031, 0x0a}, //10-bit mode
{0x303c, 0xff}, //reserved
{0x303e, 0xff}, //reserved
{0x3040, 0xf0}, //sclk_isp_fc_en, sclk_fc-en, sclk_tpm_en, sclk_fmt_en
{0x3041, 0x00}, //reserved
{0x3042, 0xf0}, //reserved
{0x3106, 0x11}, //sclk_div = 1, sclk_pre_div = 1
{0x3500, 0x00}, //exposure H
{0x3501, 0x3d}, //exposure M
{0x3502, 0x00}, //exposure L
{0x3503, 0x04}, //gain no delay, use sensor gain
{0x3504, 0x03}, //exposure manual, gain manual
{0x3505, 0x83}, //sensor gain fixed bit
{0x3508, 0x04}, //gain H
{0x3509, 0x00}, //gain L
{0x350e, 0x04}, //short digital gain H
{0x350f, 0x00}, //short digital gain L
{0x3510, 0x00}, //short exposure H
{0x3511, 0x02}, //short exposure M
{0x3512, 0x00}, //short exposure L
{0x3601, 0xc8}, //analog control
{0x3610, 0x88},
{0x3612, 0x48},
{0x3614, 0x5b},
{0x3615, 0x96},
{0x3621, 0xd0},
{0x3622, 0x00},
{0x3623, 0x00},
{0x3633, 0x13},
{0x3634, 0x13},
{0x3635, 0x13},
{0x3636, 0x13},
{0x3645, 0x13},
{0x3646, 0x82},
{0x3650, 0x00},
{0x3652, 0xff},
{0x3655, 0x20},
{0x3656, 0xff},
{0x365a, 0xff},
{0x365e, 0xff},
{0x3668, 0x00},
{0x366a, 0x07},
{0x366e, 0x08},
{0x366d, 0x00},
{0x366f, 0x80}, //analog control
{0x3700, 0x28}, //sensor control
{0x3701, 0x10},
{0x3702, 0x3a},
{0x3703, 0x19},
{0x3704, 0x10},
{0x3705, 0x00},
{0x3706, 0x66},
{0x3707, 0x08},
{0x3708, 0x34},
{0x3709, 0x40},
{0x370a, 0x01},
{0x370b, 0x1b},
{0x3714, 0x24},
{0x371a, 0x3e},
{0x3733, 0x00},
{0x3734, 0x00},
{0x373a, 0x05},
{0x373b, 0x06},
{0x373c, 0x0a},
{0x373f, 0xa0},
{0x3755, 0x00},
{0x3758, 0x00},
{0x375b, 0x0e},
{0x3766, 0x5f},
{0x3768, 0x00},
{0x3769, 0x22},
{0x3773, 0x08},
{0x3774, 0x1f},
{0x3776, 0x06},
{0x37a0, 0x88},
{0x37a1, 0x5c},
{0x37a7, 0x88},
{0x37a8, 0x70},
{0x37aa, 0x88},
{0x37ab, 0x48},
{0x37b3, 0x66},
{0x37c2, 0x04},
{0x37c5, 0x00},
{0x37c8, 0x00}, //sensor control
{0x3800, 0x00}, //x addr start H
{0x3801, 0x0c}, //x addr start L
{0x3802, 0x00}, //y addr start H
{0x3803, 0x04}, //y addr start L
{0x3804, 0x0a}, //x addr end H
{0x3805, 0x33}, //x addr end L
{0x3806, 0x07}, //y addr end H
{0x3807, 0xa3}, //y addr end L
{0x3808, 0x05}, //x output size H
{0x3809, 0x10}, //x output size L
{0x380a, 0x03}, //y output size H
{0x380b, 0xc0}, //y output size L
{0x380c, 0x06}, //HTS H
{0x380d, 0x90}, //HTS L
{0x380e, 0x03}, //VTS H
{0x380f, 0xfc}, //VTS L
{0x3811, 0x04}, //ISP x win L
{0x3813, 0x02}, //ISP y win L
{0x3814, 0x03}, //x inc odd
{0x3815, 0x01}, //x inc even
{0x3816, 0x00}, //vsync start H
{0x3817, 0x00}, //vsync star L
{0x3818, 0x00}, //vsync end H
{0x3819, 0x00}, //vsync end L
{0x3820, 0x90}, //vsyn48_blc on, vflip off
{0x3821, 0x47}, //hsync_en_o, mirror on, dig_bin on
{0x3822, 0x48}, //addr0_num[3:1]=0x02, ablc_num[5:1]=0x08
{0x3826, 0x00}, //r_rst_fsin H
{0x3827, 0x08}, //r_rst_fsin L
{0x382a, 0x03}, //y inc odd
{0x382b, 0x01}, //y inc even
{0x3830, 0x08},
{0x3836, 0x02},
{0x3837, 0x00},
{0x3838, 0x10},
{0x3841, 0xff},
{0x3846, 0x48},
{0x3861, 0x00},
{0x3862, 0x04},
{0x3863, 0x06},
{0x3a11, 0x01},
{0x3a12, 0x78},
{0x3b00, 0x00}, //strobe
{0x3b02, 0x00},
{0x3b03, 0x00},
{0x3b04, 0x00},
{0x3b05, 0x00}, //strobe
{0x3c00, 0x89},
{0x3c01, 0xab},
{0x3c02, 0x01},
{0x3c03, 0x00},
{0x3c04, 0x00},
{0x3c05, 0x03},
{0x3c06, 0x00},
{0x3c07, 0x05},
{0x3c0c, 0x00},
{0x3c0d, 0x00},
{0x3c0e, 0x00},
{0x3c0f, 0x00},
{0x3c40, 0x00},
{0x3c41, 0xa3},
{0x3c43, 0x7d},
{0x3c45, 0xd7},
{0x3c47, 0xfc},
{0x3c50, 0x05},
{0x3c52, 0xaa},
{0x3c54, 0x71},
{0x3c56, 0x80},
{0x3d85, 0x17},
{0x3f03, 0x00}, //PSRAM
{0x3f0a, 0x00},
{0x3f0b, 0x00}, //PSRAM
{0x4001, 0x60}, //BLC, K enable
{0x4009, 0x05}, //BLC, black line end line
{0x4020, 0x00}, //BLC, offset compensation th000
{0x4021, 0x00}, //BLC, offset compensation K000
{0x4022, 0x00},
{0x4023, 0x00},
{0x4024, 0x00},
{0x4025, 0x00},
{0x4026, 0x00},
{0x4027, 0x00},
{0x4028, 0x00},
{0x4029, 0x00},
{0x402a, 0x00},
{0x402b, 0x00},
{0x402c, 0x00},
{0x402d, 0x00},
{0x402e, 0x00},
{0x402f, 0x00},
{0x4040, 0x00},
{0x4041, 0x03},
{0x4042, 0x00},
{0x4043, 0x7A}, //1/1.05 x (0x80)
{0x4044, 0x00},
{0x4045, 0x7A},
{0x4046, 0x00},
{0x4047, 0x7A},
{0x4048, 0x00}, //BLC, kcoef_r_man H
{0x4049, 0x7A}, //BLC, kcoef_r_man L
{0x4303, 0x00},
{0x4307, 0x30},
{0x4500, 0x58},
{0x4501, 0x04},
{0x4502, 0x48},
{0x4503, 0x10},
{0x4508, 0x55},
{0x4509, 0x55},
{0x450a, 0x00},
{0x450b, 0x00},
{0x4600, 0x00},
{0x4601, 0x81},
{0x4700, 0xa4},
{0x4800, 0x4c}, //MIPI control
{0x4816, 0x53}, //emb_dt
{0x481f, 0x40}, //clock_prepare_min
{0x4837, 0x13}, //MIPI global timing
{0x5000, 0x56}, //dcblc_en, awb_gain_en, bc_en, wc_en
{0x5001, 0x01}, //blc_en
{0x5002, 0x28}, //otp_dpc_en
{0x5004, 0x0c}, //ISP size auto control enable
{0x5006, 0x0c},
{0x5007, 0xe0},
{0x5008, 0x01},
{0x5009, 0xb0},
{0x5901, 0x00}, //VAP
{0x5a01, 0x00}, //WINC x start offset H
{0x5a03, 0x00}, //WINC x start offset L
{0x5a04, 0x0c}, //WINC y start offset H
{0x5a05, 0xe0}, //WINC y start offset L
{0x5a06, 0x09}, //WINC window width H
{0x5a07, 0xb0}, //WINC window width L
{0x5a08, 0x06}, //WINC window height H
{0x5e00, 0x00}, //WINC window height L
{0x3734, 0x40}, //Improve HFPN
{0x5b00, 0x01}, //[2:0] otp start addr[10:8]
{0x5b01, 0x10}, //[7:0] otp start addr[7:0]
{0x5b02, 0x01}, //[2:0] otp end addr[10:8]
{0x5b03, 0xdb}, //[7:0] otp end addr[7:0]
{0x3d8c, 0x71}, //Header address high byte
{0x3d8d, 0xea}, //Header address low byte
{0x4017, 0x10}, //threshold = 4LSB for Binning sum format.
{0x3618, 0x2a},
{0x5780, 0x3e},
{0x5781, 0x0f},
{0x5782, 0x44},
{0x5783, 0x02},
{0x5784, 0x01},
{0x5785, 0x01},
{0x5786, 0x00},
{0x5787, 0x04},
{0x5788, 0x02},
{0x5789, 0x0f},
{0x578a, 0xfd},
{0x578b, 0xf5},
{0x578c, 0xf5},
{0x578d, 0x03},
{0x578e, 0x08},
{0x578f, 0x0c},
{0x5790, 0x08},
{0x5791, 0x06},
{0x5792, 0x00},
{0x5793, 0x52},
{0x5794, 0xa3},
{0x3503, 0x30}, //exposure gain/exposure delay not used
{0x3002, 0x61}, //[6]ULPM output enable
{0x3010, 0x40}, //[6]enable ULPM as GPIO controlled by register
{0x300d, 0x00}, //[6]ULPM output low (if 1=> high)
{0x5045, 0x05}, //[2] enable MWB manual bias
{0x5048, 0x10}, //MWB manual bias be the same with 0x4003 BLC target.
//{0x0100, 0x01},
{REG_NULL, 0x00},
};
/*
* Xclk 24Mhz
* Pclk 210Mhz
* linelength 3360(0xd20
* framelength 2038(0x7f6)
* grabwindow_width 2592
* grabwindow_height 1944
* max_framerate 30fps
* mipi_datarate per lane 840Mbps
*/
static const struct regval ov5670_2592x1944_regs_2lane[] = {
// 2592x1944 30fps 2 lane MIPI 840Mbps/lane
{0x0100, 0x00},
{0x3501, 0x7b}, //exposure M
{0x3623, 0x00}, //analog control
{0x366e, 0x10}, //analog control
{0x370b, 0x1b}, //sensor control
{0x3808, 0x0a}, //x output size H
{0x3809, 0x20}, //x output size L
{0x380a, 0x07}, //y output size H
{0x380b, 0x98}, //y output size L
{0x380c, 0x06}, //HTS H
{0x380d, 0x90}, //HTS L
{0x380e, 0x07}, //VTS H
{0x380f, 0xf6}, //VTS L
{0x3814, 0x01}, //x inc odd
{0x3820, 0x80}, //vsyn48_blc on, vflip off
{0x3821, 0x46}, //hsync_en_o, mirror on, dig_bin on
{0x382a, 0x01}, //y inc odd
{0x4009, 0x0d}, //BLC, black line end line
{0x4502, 0x40},
{0x4508, 0xaa},
{0x4509, 0xaa},
{0x450a, 0x00},
{0x4600, 0x01},
{0x4601, 0x03},
{0x4017, 0x08}, //BLC, offset trigger threshold
//{0x0100, 0x01},
{REG_NULL, 0x00},
};
/*
* Xclk 24Mhz
* Pclk 210Mhz
* linelength 3360(0xd20
* framelength 2038(0x7f6)
* grabwindow_width 1296
* grabwindow_height 960
* max_framerate 30fps
* mipi_datarate per lane 840Mbps
*/
static const struct regval ov5670_1296x960_regs_2lane[] = {
// 1296x960 30fps 2 lane MIPI 840Mbps/lane
{0x0100, 0x00},
{0x3501, 0x3d}, //exposure M
{0x3623, 0x00}, //analog control
{0x366e, 0x08}, //analog control
{0x370b, 0x1b}, //sensor control
{0x3808, 0x05}, //x output size H
{0x3809, 0x10}, //x output size L
{0x380a, 0x03}, //y output size H
{0x380b, 0xc0}, //y output size L
{0x380c, 0x06}, //HTS H
{0x380d, 0x90}, //HTS L
{0x380e, 0x07}, //VTS H
{0x380f, 0xf6}, //VTS L
{0x3814, 0x03}, //x inc odd
{0x3820, 0x90}, //vsyn48_blc on, vflip off
{0x3821, 0x47}, //hsync_en_o, mirror on, dig_bin on
{0x382a, 0x03}, //y inc odd
{0x4009, 0x05}, //BLC, black line end line
{0x4502, 0x48},
{0x4508, 0x55},
{0x4509, 0x55},
{0x450a, 0x00},
{0x4600, 0x00},
{0x4601, 0x81},
{0x4017, 0x10}, //BLC, offset trigger threshold
//{0x0100, 0x01},
{REG_NULL, 0x00}
};
static const struct ov5670_mode supported_modes_2lane[] = {
{
.width = 2592,
.height = 1944,
.max_fps = {
.numerator = 10000,
.denominator = 300000,
},
.exp_def = 0x07d0,
.hts_def = 0x0d20,
.vts_def = 0x07f6,
.reg_list = ov5670_2592x1944_regs_2lane,
},
{
.width = 1296,
.height = 960,
.max_fps = {
.numerator = 10000,
.denominator = 300000,
},
.exp_def = 0x03d0,
.hts_def = 0x0d20,
.vts_def = 0x07f6,
.reg_list = ov5670_1296x960_regs_2lane,
},
};
static const struct ov5670_mode *supported_modes;
static const s64 link_freq_menu_items[] = {
MIPI_FREQ
};
static const char * const ov5670_test_pattern_menu[] = {
"Disabled",
"Vertical Color Bar Type 1",
};
/* Write registers up to 4 at a time */
static int ov5670_write_reg(struct i2c_client *client, u16 reg,
u32 len, u32 val)
{
u32 buf_i, val_i;
u8 buf[6];
u8 *val_p;
__be32 val_be;
dev_dbg(&client->dev, "%s(%d) enter!\n", __func__, __LINE__);
dev_dbg(&client->dev, "write reg(0x%x val:0x%x)!\n", reg, val);
if (len > 4)
return -EINVAL;
buf[0] = reg >> 8;
buf[1] = reg & 0xff;
val_be = cpu_to_be32(val);
val_p = (u8 *)&val_be;
buf_i = 2;
val_i = 4 - len;
while (val_i < 4)
buf[buf_i++] = val_p[val_i++];
if (i2c_master_send(client, buf, len + 2) != len + 2) {
dev_err(&client->dev,
"write reg(0x%x val:0x%x)failed !\n", reg, val);
return -EIO;
}
return 0;
}
static int ov5670_write_array(struct i2c_client *client,
const struct regval *regs)
{
int i, delay_ms, ret = 0;
for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++) {
if (regs[i].addr == DELAY_MS) {
delay_ms = regs[i].val;
dev_info(&client->dev, "delay(%d) ms !\n", delay_ms);
usleep_range(1000 * delay_ms, 1000 * delay_ms + 100);
continue;
}
ret = ov5670_write_reg(client, regs[i].addr,
OV5670_REG_VALUE_08BIT, regs[i].val);
if (ret)
dev_err(&client->dev, "%s failed !\n", __func__);
}
return ret;
}
/* Read registers up to 4 at a time */
static int ov5670_read_reg(struct i2c_client *client, u16 reg,
unsigned int len, u32 *val)
{
struct i2c_msg msgs[2];
u8 *data_be_p;
__be32 data_be = 0;
__be16 reg_addr_be = cpu_to_be16(reg);
int ret;
if (len > 4 || !len)
return -EINVAL;
data_be_p = (u8 *)&data_be;
/* Write register address */
msgs[0].addr = client->addr;
msgs[0].flags = 0;
msgs[0].len = 2;
msgs[0].buf = (u8 *)&reg_addr_be;
/* Read data from register */
msgs[1].addr = client->addr;
msgs[1].flags = I2C_M_RD;
msgs[1].len = len;
msgs[1].buf = &data_be_p[4 - len];
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
if (ret != ARRAY_SIZE(msgs))
return -EIO;
*val = be32_to_cpu(data_be);
return 0;
}
/* Check Register value */
#ifdef CHECK_REG_VALUE
static int ov5670_reg_verify(struct i2c_client *client,
const struct regval *regs)
{
u32 i;
int ret = 0;
u32 value;
for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++) {
ret = ov5670_read_reg(client, regs[i].addr,
OV5670_REG_VALUE_08BIT, &value);
if (value != regs[i].val) {
dev_info(&client->dev, "%s: 0x%04x is 0x%x instead of 0x%x\n",
__func__, regs[i].addr, value, regs[i].val);
}
}
return ret;
}
#endif
static int ov5670_get_reso_dist(const struct ov5670_mode *mode,
struct v4l2_mbus_framefmt *framefmt)
{
return abs(mode->width - framefmt->width) +
abs(mode->height - framefmt->height);
}
static const struct ov5670_mode *
ov5670_find_best_fit(struct ov5670 *ov5670,
struct v4l2_subdev_format *fmt)
{
struct v4l2_mbus_framefmt *framefmt = &fmt->format;
int dist;
int cur_best_fit = 0;
int cur_best_fit_dist = -1;
unsigned int i;
for (i = 0; i < ov5670->cfg_num; i++) {
dist = ov5670_get_reso_dist(&supported_modes[i], framefmt);
if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) {
cur_best_fit_dist = dist;
cur_best_fit = i;
}
}
return &supported_modes[cur_best_fit];
}
static int ov5670_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct ov5670 *ov5670 = to_ov5670(sd);
const struct ov5670_mode *mode;
s64 h_blank, vblank_def;
mutex_lock(&ov5670->mutex);
mode = ov5670_find_best_fit(ov5670, fmt);
fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
fmt->format.width = mode->width;
fmt->format.height = mode->height;
fmt->format.field = V4L2_FIELD_NONE;
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
*v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format;
#else
mutex_unlock(&ov5670->mutex);
return -ENOTTY;
#endif
} else {
ov5670->cur_mode = mode;
h_blank = mode->hts_def - mode->width;
__v4l2_ctrl_modify_range(ov5670->hblank, h_blank,
h_blank, 1, h_blank);
vblank_def = mode->vts_def - mode->height;
__v4l2_ctrl_modify_range(ov5670->vblank, vblank_def,
OV5670_VTS_MAX - mode->height,
1, vblank_def);
}
mutex_unlock(&ov5670->mutex);
return 0;
}
static int ov5670_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct ov5670 *ov5670 = to_ov5670(sd);
const struct ov5670_mode *mode = ov5670->cur_mode;
mutex_lock(&ov5670->mutex);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
#else
mutex_unlock(&ov5670->mutex);
return -ENOTTY;
#endif
} else {
fmt->format.width = mode->width;
fmt->format.height = mode->height;
fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
fmt->format.field = V4L2_FIELD_NONE;
}
mutex_unlock(&ov5670->mutex);
return 0;
}
static int ov5670_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index != 0)
return -EINVAL;
code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
return 0;
}
static int ov5670_enum_frame_sizes(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_frame_size_enum *fse)
{
struct ov5670 *ov5670 = to_ov5670(sd);
if (fse->index >= ov5670->cfg_num)
return -EINVAL;
if (fse->code != MEDIA_BUS_FMT_SBGGR10_1X10)
return -EINVAL;
fse->min_width = supported_modes[fse->index].width;
fse->max_width = supported_modes[fse->index].width;
fse->max_height = supported_modes[fse->index].height;
fse->min_height = supported_modes[fse->index].height;
return 0;
}
static int ov5670_enable_test_pattern(struct ov5670 *ov5670, u32 pattern)
{
u32 val;
if (pattern)
val = (pattern - 1) | OV5670_TEST_PATTERN_ENABLE;
else
val = OV5670_TEST_PATTERN_DISABLE;
return ov5670_write_reg(ov5670->client, OV5670_REG_TEST_PATTERN,
OV5670_REG_VALUE_08BIT, val);
}
static void ov5670_get_otp(struct ov5670_otp_info *otp,
struct rkmodule_inf *inf)
{
u32 i;
int rg, bg;
/* fac */
if (otp->flag & 0x80) {
inf->fac.flag = 1;
inf->fac.year = otp->year;
inf->fac.month = otp->month;
inf->fac.day = otp->day;
for (i = 0; i < ARRAY_SIZE(ov5670_module_info) - 1; i++) {
if (ov5670_module_info[i].id == otp->module_id)
break;
}
strscpy(inf->fac.module, ov5670_module_info[i].name,
sizeof(inf->fac.module));
for (i = 0; i < ARRAY_SIZE(ov5670_lens_info) - 1; i++) {
if (ov5670_lens_info[i].id == otp->lens_id)
break;
}
strscpy(inf->fac.lens, ov5670_lens_info[i].name,
sizeof(inf->fac.lens));
}
/* awb */
if (otp->flag & 0x40) {
rg = otp->rg_ratio;
bg = otp->bg_ratio;
inf->awb.flag = 1;
inf->awb.r_value = rg;
inf->awb.b_value = bg;
inf->awb.gr_value = 0x200;
inf->awb.gb_value = 0x200;
inf->awb.golden_r_value = 0;
inf->awb.golden_b_value = 0;
inf->awb.golden_gr_value = 0;
inf->awb.golden_gb_value = 0;
}
}
static int ov5670_g_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *fi)
{
struct ov5670 *ov5670 = to_ov5670(sd);
const struct ov5670_mode *mode = ov5670->cur_mode;
mutex_lock(&ov5670->mutex);
fi->interval = mode->max_fps;
mutex_unlock(&ov5670->mutex);
return 0;
}
static void ov5670_get_module_inf(struct ov5670 *ov5670,
struct rkmodule_inf *inf)
{
struct ov5670_otp_info *otp = ov5670->otp;
memset(inf, 0, sizeof(*inf));
strscpy(inf->base.sensor, OV5670_NAME, sizeof(inf->base.sensor));
strscpy(inf->base.module, ov5670->module_name,
sizeof(inf->base.module));
strscpy(inf->base.lens, ov5670->len_name, sizeof(inf->base.lens));
if (otp)
ov5670_get_otp(otp, inf);
}
static void ov5670_set_awb_cfg(struct ov5670 *ov5670,
struct rkmodule_awb_cfg *cfg)
{
mutex_lock(&ov5670->mutex);
memcpy(&ov5670->awb_cfg, cfg, sizeof(*cfg));
mutex_unlock(&ov5670->mutex);
}
static long ov5670_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
struct ov5670 *ov5670 = to_ov5670(sd);
long ret = 0;
switch (cmd) {
case RKMODULE_GET_MODULE_INFO:
ov5670_get_module_inf(ov5670, (struct rkmodule_inf *)arg);
break;
case RKMODULE_AWB_CFG:
ov5670_set_awb_cfg(ov5670, (struct rkmodule_awb_cfg *)arg);
break;
default:
ret = -ENOIOCTLCMD;
break;
}
return ret;
}
#ifdef CONFIG_COMPAT
static long ov5670_compat_ioctl32(struct v4l2_subdev *sd,
unsigned int cmd, unsigned long arg)
{
void __user *up = compat_ptr(arg);
struct rkmodule_inf *inf;
struct rkmodule_awb_cfg *awb_cfg;
long ret;
switch (cmd) {
case RKMODULE_GET_MODULE_INFO:
inf = kzalloc(sizeof(*inf), GFP_KERNEL);
if (!inf) {
ret = -ENOMEM;
return ret;
}
ret = ov5670_ioctl(sd, cmd, inf);
if (!ret) {
if (copy_to_user(up, inf, sizeof(*inf)))
return -EFAULT;
}
kfree(inf);
break;
case RKMODULE_AWB_CFG:
awb_cfg = kzalloc(sizeof(*awb_cfg), GFP_KERNEL);
if (!awb_cfg) {
ret = -ENOMEM;
return ret;
}
if (copy_from_user(awb_cfg, up, sizeof(*awb_cfg)))
return -EFAULT;
ret = ov5670_ioctl(sd, cmd, awb_cfg);
kfree(awb_cfg);
break;
default:
ret = -ENOIOCTLCMD;
break;
}
return ret;
}
#endif
/*--------------------------------------------------------------------------*/
static int ov5670_apply_otp(struct ov5670 *ov5670)
{
int rg, bg, R_gain, G_gain, B_gain, base_gain;
struct i2c_client *client = ov5670->client;
struct ov5670_otp_info *otp_ptr = ov5670->otp;
struct rkmodule_awb_cfg *awb_cfg = &ov5670->awb_cfg;
u32 golden_bg_ratio = 0;
u32 golden_rg_ratio = 0;
u32 golden_g_value = 0;
if (awb_cfg->enable) {
golden_g_value = (awb_cfg->golden_gb_value +
awb_cfg->golden_gr_value) / 2;
if (golden_g_value != 0) {
golden_rg_ratio = awb_cfg->golden_r_value * 0x200
/ golden_g_value;
golden_bg_ratio = awb_cfg->golden_b_value * 0x200
/ golden_g_value;
} else {
golden_rg_ratio = RG_Ratio_Typical_Default;
golden_bg_ratio = BG_Ratio_Typical_Default;
}
}
/* apply OTP WB Calibration */
if (otp_ptr->flag & 0x40) {
rg = otp_ptr->rg_ratio;
bg = otp_ptr->bg_ratio;
/* calculate G gain */
R_gain = (golden_rg_ratio * 1000) / rg;
B_gain = (golden_bg_ratio * 1000) / bg;
G_gain = 1000;
if (R_gain < 1000 || B_gain < 1000) {
if (R_gain < B_gain)
base_gain = R_gain;
else
base_gain = B_gain;
} else {
base_gain = G_gain;
}
R_gain = 0x400 * R_gain / (base_gain);
B_gain = 0x400 * B_gain / (base_gain);
G_gain = 0x400 * G_gain / (base_gain);
/* update sensor WB gain */
if (R_gain > 0x400) {
ov5670_write_1byte(client, 0x5032, R_gain >> 8);
ov5670_write_1byte(client, 0x5033, R_gain & 0x00ff);
}
if (G_gain > 0x400) {
ov5670_write_1byte(client, 0x5034, G_gain >> 8);
ov5670_write_1byte(client, 0x5035, G_gain & 0x00ff);
}
if (B_gain > 0x400) {
ov5670_write_1byte(client, 0x5036, B_gain >> 8);
ov5670_write_1byte(client, 0x5037, B_gain & 0x00ff);
}
dev_info(&client->dev, "apply awb gain: 0x%x, 0x%x, 0x%x\n",
R_gain, G_gain, B_gain);
}
return 0;
}
static int __ov5670_start_stream(struct ov5670 *ov5670)
{
int ret;
ret = ov5670_write_array(ov5670->client, ov5670->cur_mode->reg_list);
if (ret)
return ret;
#ifdef CHECK_REG_VALUE
usleep_range(10000, 20000);
/* verify default values to make sure everything has */
/* been written correctly as expected */
dev_info(&ov5670->client->dev, "%s:Check register value!\n",
__func__);
ret = ov5670_reg_verify(ov5670->client, ov5670_global_regs);
if (ret)
return ret;
ret = ov5670_reg_verify(ov5670->client, ov5670->cur_mode->reg_list);
if (ret)
return ret;
#endif
/* In case these controls are set before streaming */
mutex_unlock(&ov5670->mutex);
ret = v4l2_ctrl_handler_setup(&ov5670->ctrl_handler);
mutex_lock(&ov5670->mutex);
if (ret)
return ret;
if (ov5670->otp)
ret = ov5670_apply_otp(ov5670);
if (ret)
dev_info(&ov5670->client->dev, "APPly otp failed!\n");
ret = ov5670_write_reg(ov5670->client, OV5670_REG_CTRL_MODE,
OV5670_REG_VALUE_08BIT, OV5670_MODE_STREAMING);
return ret;
}
static int __ov5670_stop_stream(struct ov5670 *ov5670)
{
return ov5670_write_reg(ov5670->client, OV5670_REG_CTRL_MODE,
OV5670_REG_VALUE_08BIT, OV5670_MODE_SW_STANDBY);
}
static int ov5670_s_stream(struct v4l2_subdev *sd, int on)
{
struct ov5670 *ov5670 = to_ov5670(sd);
struct i2c_client *client = ov5670->client;
int ret = 0;
dev_info(&client->dev, "%s: on: %d, %dx%d@%d\n", __func__, on,
ov5670->cur_mode->width,
ov5670->cur_mode->height,
DIV_ROUND_CLOSEST(ov5670->cur_mode->max_fps.denominator,
ov5670->cur_mode->max_fps.numerator));
mutex_lock(&ov5670->mutex);
on = !!on;
if (on == ov5670->streaming)
goto unlock_and_return;
if (on) {
dev_info(&client->dev, "stream on!!!\n");
ret = pm_runtime_get_sync(&client->dev);
if (ret < 0) {
pm_runtime_put_noidle(&client->dev);
goto unlock_and_return;
}
ret = __ov5670_start_stream(ov5670);
if (ret) {
v4l2_err(sd, "start stream failed while write regs\n");
pm_runtime_put(&client->dev);
goto unlock_and_return;
}
} else {
dev_info(&client->dev, "stream off!!!\n");
__ov5670_stop_stream(ov5670);
pm_runtime_put(&client->dev);
}
ov5670->streaming = on;
unlock_and_return:
mutex_unlock(&ov5670->mutex);
return ret;
}
static int ov5670_s_power(struct v4l2_subdev *sd, int on)
{
struct ov5670 *ov5670 = to_ov5670(sd);
struct i2c_client *client = ov5670->client;
int ret = 0;
dev_info(&client->dev, "%s(%d) on(%d)\n", __func__, __LINE__, on);
mutex_lock(&ov5670->mutex);
/* If the power state is not modified - no work to do. */
if (ov5670->power_on == !!on)
goto unlock_and_return;
if (on) {
ret = pm_runtime_get_sync(&client->dev);
if (ret < 0) {
pm_runtime_put_noidle(&client->dev);
goto unlock_and_return;
}
ret = ov5670_write_array(ov5670->client, ov5670_global_regs);
if (ret) {
v4l2_err(sd, "could not set init registers\n");
pm_runtime_put_noidle(&client->dev);
goto unlock_and_return;
}
ov5670->power_on = true;
/* export gpio */
if (!IS_ERR(ov5670->reset_gpio))
gpiod_export(ov5670->reset_gpio, false);
if (!IS_ERR(ov5670->pwdn_gpio))
gpiod_export(ov5670->pwdn_gpio, false);
} else {
pm_runtime_put(&client->dev);
ov5670->power_on = false;
}
unlock_and_return:
mutex_unlock(&ov5670->mutex);
return ret;
}
/* Calculate the delay in us by clock rate and clock cycles */
static inline u32 ov5670_cal_delay(u32 cycles)
{
return DIV_ROUND_UP(cycles, OV5670_XVCLK_FREQ / 1000 / 1000);
}
static int __ov5670_power_on(struct ov5670 *ov5670)
{
int ret;
u32 delay_us;
struct device *dev = &ov5670->client->dev;
if (!IS_ERR(ov5670->power_gpio))
gpiod_set_value_cansleep(ov5670->power_gpio, 1);
usleep_range(1000, 2000);
if (!IS_ERR_OR_NULL(ov5670->pins_default)) {
ret = pinctrl_select_state(ov5670->pinctrl,
ov5670->pins_default);
if (ret < 0)
dev_err(dev, "could not set pins\n");
}
ret = clk_set_rate(ov5670->xvclk, OV5670_XVCLK_FREQ);
if (ret < 0)
dev_warn(dev, "Failed to set xvclk rate (24MHz)\n");
if (clk_get_rate(ov5670->xvclk) != OV5670_XVCLK_FREQ)
dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n");
ret = clk_prepare_enable(ov5670->xvclk);
if (ret < 0) {
dev_err(dev, "Failed to enable xvclk\n");
return ret;
}
ret = regulator_bulk_enable(OV5670_NUM_SUPPLIES, ov5670->supplies);
if (ret < 0) {
dev_err(dev, "Failed to enable regulators\n");
goto disable_clk;
}
if (!IS_ERR(ov5670->reset_gpio))
gpiod_set_value_cansleep(ov5670->reset_gpio, 1);
if (!IS_ERR(ov5670->pwdn_gpio))
gpiod_set_value_cansleep(ov5670->pwdn_gpio, 1);
/* export gpio */
if (!IS_ERR(ov5670->reset_gpio))
gpiod_export(ov5670->reset_gpio, false);
if (!IS_ERR(ov5670->pwdn_gpio))
gpiod_export(ov5670->pwdn_gpio, false);
/* 8192 cycles prior to first SCCB transaction */
delay_us = ov5670_cal_delay(8192);
usleep_range(delay_us, delay_us * 2);
usleep_range(10000, 20000);
return 0;
disable_clk:
clk_disable_unprepare(ov5670->xvclk);
return ret;
}
static void __ov5670_power_off(struct ov5670 *ov5670)
{
int ret;
struct device *dev = &ov5670->client->dev;
if (!IS_ERR(ov5670->pwdn_gpio))
gpiod_set_value_cansleep(ov5670->pwdn_gpio, 0);
clk_disable_unprepare(ov5670->xvclk);
if (!IS_ERR(ov5670->reset_gpio))
gpiod_set_value_cansleep(ov5670->reset_gpio, 0);
if (!IS_ERR_OR_NULL(ov5670->pins_sleep)) {
ret = pinctrl_select_state(ov5670->pinctrl,
ov5670->pins_sleep);
if (ret < 0)
dev_dbg(dev, "could not set pins\n");
}
if (!IS_ERR(ov5670->power_gpio))
gpiod_set_value_cansleep(ov5670->power_gpio, 0);
regulator_bulk_disable(OV5670_NUM_SUPPLIES, ov5670->supplies);
}
static int ov5670_runtime_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ov5670 *ov5670 = to_ov5670(sd);
return __ov5670_power_on(ov5670);
}
static int ov5670_runtime_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ov5670 *ov5670 = to_ov5670(sd);
__ov5670_power_off(ov5670);
return 0;
}
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
static int ov5670_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct ov5670 *ov5670 = to_ov5670(sd);
struct v4l2_mbus_framefmt *try_fmt =
v4l2_subdev_get_try_format(sd, fh->pad, 0);
const struct ov5670_mode *def_mode = &supported_modes[0];
mutex_lock(&ov5670->mutex);
/* Initialize try_fmt */
try_fmt->width = def_mode->width;
try_fmt->height = def_mode->height;
try_fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
try_fmt->field = V4L2_FIELD_NONE;
mutex_unlock(&ov5670->mutex);
/* No crop or compose */
return 0;
}
#endif
static int ov5670_enum_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_frame_interval_enum *fie)
{
struct ov5670 *ov5670 = to_ov5670(sd);
if (fie->index >= ov5670->cfg_num)
return -EINVAL;
fie->code = MEDIA_BUS_FMT_SBGGR10_1X10;
fie->width = supported_modes[fie->index].width;
fie->height = supported_modes[fie->index].height;
fie->interval = supported_modes[fie->index].max_fps;
return 0;
}
static int ov5670_g_mbus_config(struct v4l2_subdev *sd,
unsigned int pad_id,
struct v4l2_mbus_config *config)
{
u32 val = 1 << (OV5670_LANES - 1) |
V4L2_MBUS_CSI2_CHANNEL_0 |
V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
config->type = V4L2_MBUS_CSI2_DPHY;
config->flags = val;
return 0;
}
static const struct dev_pm_ops ov5670_pm_ops = {
SET_RUNTIME_PM_OPS(ov5670_runtime_suspend,
ov5670_runtime_resume, NULL)
};
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
static const struct v4l2_subdev_internal_ops ov5670_internal_ops = {
.open = ov5670_open,
};
#endif
static const struct v4l2_subdev_core_ops ov5670_core_ops = {
.s_power = ov5670_s_power,
.ioctl = ov5670_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl32 = ov5670_compat_ioctl32,
#endif
};
static const struct v4l2_subdev_video_ops ov5670_video_ops = {
.s_stream = ov5670_s_stream,
.g_frame_interval = ov5670_g_frame_interval,
};
static const struct v4l2_subdev_pad_ops ov5670_pad_ops = {
.enum_mbus_code = ov5670_enum_mbus_code,
.enum_frame_size = ov5670_enum_frame_sizes,
.enum_frame_interval = ov5670_enum_frame_interval,
.get_fmt = ov5670_get_fmt,
.set_fmt = ov5670_set_fmt,
.get_mbus_config = ov5670_g_mbus_config,
};
static const struct v4l2_subdev_ops ov5670_subdev_ops = {
.core = &ov5670_core_ops,
.video = &ov5670_video_ops,
.pad = &ov5670_pad_ops,
};
static int ov5670_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct ov5670 *ov5670 = container_of(ctrl->handler,
struct ov5670, ctrl_handler);
struct i2c_client *client = ov5670->client;
s64 max;
int ret = 0;
/* Propagate change of current control to all related controls */
switch (ctrl->id) {
case V4L2_CID_VBLANK:
/* Update max exposure while meeting expected vblanking */
max = ov5670->cur_mode->height + ctrl->val - 4;
__v4l2_ctrl_modify_range(ov5670->exposure,
ov5670->exposure->minimum, max,
ov5670->exposure->step,
ov5670->exposure->default_value);
break;
}
if (pm_runtime_get(&client->dev) <= 0)
return 0;
switch (ctrl->id) {
case V4L2_CID_EXPOSURE:
/* 4 least significant bits of expsoure are fractional part */
/*group 0*/
ret = ov5670_write_reg(ov5670->client, OV5670_REG_GROUP,
OV5670_REG_VALUE_08BIT, 0x00);
ret |= ov5670_write_reg(ov5670->client, OV5670_REG_EXPOSURE,
OV5670_REG_VALUE_24BIT, ctrl->val << 4);
ret |= ov5670_write_reg(ov5670->client, OV5670_REG_GROUP,
OV5670_REG_VALUE_08BIT, 0x10);
ret |= ov5670_write_reg(ov5670->client, OV5670_REG_GROUP,
OV5670_REG_VALUE_08BIT, 0xa0);
break;
case V4L2_CID_ANALOGUE_GAIN:
/*group 1*/
ret = ov5670_write_reg(ov5670->client, OV5670_REG_GROUP,
OV5670_REG_VALUE_08BIT, 0x01);
ret |= ov5670_write_reg(ov5670->client, OV5670_REG_GAIN_L,
OV5670_REG_VALUE_08BIT,
ctrl->val & OV5670_GAIN_L_MASK);
ret |= ov5670_write_reg(ov5670->client, OV5670_REG_GAIN_H,
OV5670_REG_VALUE_08BIT,
(ctrl->val >> OV5670_GAIN_H_SHIFT) &
OV5670_GAIN_H_MASK);
ret |= ov5670_write_reg(ov5670->client, OV5670_REG_GROUP,
OV5670_REG_VALUE_08BIT, 0x11);
ret |= ov5670_write_reg(ov5670->client, OV5670_REG_GROUP,
OV5670_REG_VALUE_08BIT, 0xa1);
break;
case V4L2_CID_VBLANK:
ret = ov5670_write_reg(ov5670->client, OV5670_REG_VTS,
OV5670_REG_VALUE_16BIT,
ctrl->val + ov5670->cur_mode->height);
break;
case V4L2_CID_TEST_PATTERN:
ret = ov5670_enable_test_pattern(ov5670, ctrl->val);
break;
default:
dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n",
__func__, ctrl->id, ctrl->val);
break;
}
pm_runtime_put(&client->dev);
return ret;
}
static const struct v4l2_ctrl_ops ov5670_ctrl_ops = {
.s_ctrl = ov5670_set_ctrl,
};
static int ov5670_initialize_controls(struct ov5670 *ov5670)
{
const struct ov5670_mode *mode;
struct v4l2_ctrl_handler *handler;
struct v4l2_ctrl *ctrl;
s64 exposure_max, vblank_def;
u32 h_blank;
int ret;
handler = &ov5670->ctrl_handler;
mode = ov5670->cur_mode;
ret = v4l2_ctrl_handler_init(handler, 8);
if (ret)
return ret;
handler->lock = &ov5670->mutex;
ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ,
0, 0, link_freq_menu_items);
if (ctrl)
ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE,
0, ov5670->pixel_rate, 1, ov5670->pixel_rate);
h_blank = mode->hts_def - mode->width;
ov5670->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK,
h_blank, h_blank, 1, h_blank);
if (ov5670->hblank)
ov5670->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
vblank_def = mode->vts_def - mode->height;
ov5670->vblank = v4l2_ctrl_new_std(handler, &ov5670_ctrl_ops,
V4L2_CID_VBLANK, vblank_def,
OV5670_VTS_MAX - mode->height,
1, vblank_def);
exposure_max = mode->vts_def - 4;
ov5670->exposure = v4l2_ctrl_new_std(handler, &ov5670_ctrl_ops,
V4L2_CID_EXPOSURE, OV5670_EXPOSURE_MIN,
exposure_max, OV5670_EXPOSURE_STEP,
mode->exp_def);
ov5670->anal_gain = v4l2_ctrl_new_std(handler, &ov5670_ctrl_ops,
V4L2_CID_ANALOGUE_GAIN, ANALOG_GAIN_MIN,
ANALOG_GAIN_MAX, ANALOG_GAIN_STEP,
ANALOG_GAIN_DEFAULT);
ov5670->test_pattern = v4l2_ctrl_new_std_menu_items(handler,
&ov5670_ctrl_ops, V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(ov5670_test_pattern_menu) - 1,
0, 0, ov5670_test_pattern_menu);
if (handler->error) {
ret = handler->error;
dev_err(&ov5670->client->dev,
"Failed to init controls(%d)\n", ret);
goto err_free_handler;
}
ov5670->subdev.ctrl_handler = handler;
return 0;
err_free_handler:
v4l2_ctrl_handler_free(handler);
return ret;
}
static int ov5670_otp_read(struct ov5670 *ov5670)
{
int otp_flag, addr, temp = 0, i;
struct ov5670_otp_info *otp_ptr;
struct device *dev = &ov5670->client->dev;
struct i2c_client *client = ov5670->client;
otp_ptr = devm_kzalloc(dev, sizeof(*otp_ptr), GFP_KERNEL);
if (!otp_ptr)
return -ENOMEM;
otp_flag = 0;
ov5670_read_1byte(client, 0x7010, &otp_flag);
if ((otp_flag & 0xc0) == 0x40)
addr = 0x7011; /* base address of info group 1 */
else if ((otp_flag & 0x30) == 0x10)
addr = 0x7016; /* base address of info group 2 */
else if ((otp_flag & 0x0c) == 0x04)
addr = 0x701b; /* base address of info group 3 */
else
addr = 0;
if (addr != 0) {
otp_ptr->flag = 0x80; /* valid info in OTP */
ov5670_read_1byte(client, addr, &otp_ptr->module_id);
ov5670_read_1byte(client, addr + 1, &otp_ptr->lens_id);
ov5670_read_1byte(client, addr + 2, &otp_ptr->year);
ov5670_read_1byte(client, addr + 3, &otp_ptr->month);
ov5670_read_1byte(client, addr + 4, &otp_ptr->day);
dev_info(dev, "fac info: module(0x%x) lens(0x%x) time(%d_%d_%d)!\n",
otp_ptr->module_id,
otp_ptr->lens_id,
otp_ptr->year,
otp_ptr->month,
otp_ptr->day);
} else {
otp_ptr->flag = 0x00; /* not info in OTP */
otp_ptr->module_id = 0x00;
otp_ptr->lens_id = 0x00;
otp_ptr->year = 0x00;
otp_ptr->month = 0x00;
otp_ptr->day = 0x00;
dev_warn(dev, "fac info: module(0x%x) lens(0x%x) time(%d_%d_%d)!\n",
otp_ptr->module_id,
otp_ptr->lens_id,
otp_ptr->year,
otp_ptr->month,
otp_ptr->day);
}
/* OTP base information and WB calibration data */
ov5670_read_1byte(client, 0x7020, &otp_flag);
if ((otp_flag & 0xc0) == 0x40)
addr = 0x7021; /* base address of info group 1 */
else if ((otp_flag & 0x30) == 0x10)
addr = 0x7024; /* base address of info group 2 */
else if ((otp_flag & 0x0c) == 0x04)
addr = 0x7027; /* base address of info group 3 */
else
addr = 0;
if (addr != 0) {
otp_ptr->flag |= 0x40; /* valid info and AWB in OTP */
ov5670_read_1byte(client, addr + 2, &temp);
ov5670_read_1byte(client, addr, &otp_ptr->rg_ratio);
otp_ptr->rg_ratio = (otp_ptr->rg_ratio << 2) +
((temp >> 6) & 0x03);
ov5670_read_1byte(client, addr + 1, &otp_ptr->bg_ratio);
otp_ptr->bg_ratio = (otp_ptr->bg_ratio << 2) +
((temp >> 4) & 0x03);
dev_info(dev, "awb info: (0x%x, 0x%x)!\n",
otp_ptr->rg_ratio, otp_ptr->bg_ratio);
} else {
otp_ptr->rg_ratio = 0x00;
otp_ptr->bg_ratio = 0x00;
dev_warn(dev, "awb info: (0x%x, 0x%x)!\n",
otp_ptr->rg_ratio, otp_ptr->bg_ratio);
}
for (i = 0x7010; i <= 0x7029; i++)
ov5670_write_1byte(client, i, 0); /* clear OTP buffer */
if (otp_ptr->flag) {
ov5670->otp = otp_ptr;
} else {
ov5670->otp = NULL;
dev_info(dev, "otp is null!\n");
devm_kfree(dev, otp_ptr);
}
return 0;
}
static int ov5670_otp_check_read(struct ov5670 *ov5670)
{
int temp = 0;
int ret = 0;
struct i2c_client *client = ov5670->client;
/* stream on */
ov5670_write_1byte(client,
OV5670_REG_CTRL_MODE,
OV5670_MODE_STREAMING);
ov5670_read_1byte(client, 0x5002, &temp);
ov5670_write_1byte(client, 0x5002, (temp & (~0x08)));
/* read OTP into buffer */
ov5670_write_1byte(client, 0x3d84, 0xC0);
ov5670_write_1byte(client, 0x3d88, 0x70); /* OTP start address */
ov5670_write_1byte(client, 0x3d89, 0x10);
ov5670_write_1byte(client, 0x3d8A, 0x70); /* OTP end address */
ov5670_write_1byte(client, 0x3d8B, 0x29);
ov5670_write_1byte(client, 0x3d81, 0x01); /* load otp into buffer */
usleep_range(10000, 20000);
ret = ov5670_otp_read(ov5670);
/* set 0x5002[3] to "1" */
ov5670_read_1byte(client, 0x5002, &temp);
ov5670_write_1byte(client, 0x5002, 0x08 | (temp & (~0x08)));
/* stream off */
ov5670_write_1byte(client,
OV5670_REG_CTRL_MODE,
OV5670_MODE_SW_STANDBY);
return ret;
}
static int ov5670_check_sensor_id(struct ov5670 *ov5670,
struct i2c_client *client)
{
struct device *dev = &ov5670->client->dev;
u32 id = 0;
int ret;
ret = ov5670_read_reg(client, OV5670_REG_CHIP_ID,
OV5670_REG_VALUE_16BIT, &id);
if (id != CHIP_ID) {
dev_err(dev, "Unexpected sensor id(%06x), ret(%d)\n", id, ret);
return -ENODEV;
}
dev_info(dev, "Detected OV%06x sensor\n", CHIP_ID);
return 0;
}
static int ov5670_configure_regulators(struct ov5670 *ov5670)
{
unsigned int i;
for (i = 0; i < OV5670_NUM_SUPPLIES; i++)
ov5670->supplies[i].supply = ov5670_supply_names[i];
return devm_regulator_bulk_get(&ov5670->client->dev,
OV5670_NUM_SUPPLIES,
ov5670->supplies);
}
static int ov5670_parse_of(struct ov5670 *ov5670)
{
struct device *dev = &ov5670->client->dev;
struct device_node *endpoint;
struct fwnode_handle *fwnode;
int rval;
endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
if (!endpoint) {
dev_err(dev, "Failed to get endpoint\n");
return -EINVAL;
}
fwnode = of_fwnode_handle(endpoint);
rval = fwnode_property_read_u32_array(fwnode, "data-lanes", NULL, 0);
if (rval <= 0) {
dev_warn(dev, " Get mipi lane num failed!\n");
return -1;
}
ov5670->lane_num = rval;
if (ov5670->lane_num == 2) {
ov5670->cur_mode = &supported_modes_2lane[0];
supported_modes = supported_modes_2lane;
ov5670->cfg_num = ARRAY_SIZE(supported_modes_2lane);
/* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */
ov5670->pixel_rate = MIPI_FREQ * 2U * ov5670->lane_num / 8U;
dev_info(dev, "lane_num(%d) pixel_rate(%u)\n",
ov5670->lane_num, ov5670->pixel_rate);
} else {
dev_err(dev, "unsupported lane_num(%d)\n", ov5670->lane_num);
return -1;
}
return 0;
}
static int ov5670_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct device_node *node = dev->of_node;
struct ov5670 *ov5670;
struct v4l2_subdev *sd;
char facing[2] = "b";
int ret;
dev_info(dev, "driver version: %02x.%02x.%02x",
DRIVER_VERSION >> 16,
(DRIVER_VERSION & 0xff00) >> 8,
DRIVER_VERSION & 0x00ff);
ov5670 = devm_kzalloc(dev, sizeof(*ov5670), GFP_KERNEL);
if (!ov5670)
return -ENOMEM;
ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX,
&ov5670->module_index);
if (ret) {
dev_warn(dev, "could not get module index!\n");
ov5670->module_index = 0;
}
ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING,
&ov5670->module_facing);
ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME,
&ov5670->module_name);
ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME,
&ov5670->len_name);
if (ret) {
dev_err(dev, "could not get module information!\n");
return -EINVAL;
}
ov5670->client = client;
ov5670->xvclk = devm_clk_get(dev, "xvclk");
if (IS_ERR(ov5670->xvclk)) {
dev_err(dev, "Failed to get xvclk\n");
return -EINVAL;
}
ov5670->power_gpio = devm_gpiod_get(dev, "power", GPIOD_OUT_LOW);
if (IS_ERR(ov5670->power_gpio))
dev_warn(dev, "Failed to get power-gpios, maybe no use\n");
ov5670->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(ov5670->reset_gpio))
dev_warn(dev, "Failed to get reset-gpios, maybe no use\n");
ov5670->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW);
if (IS_ERR(ov5670->pwdn_gpio))
dev_warn(dev, "Failed to get pwdn-gpios\n");
ret = ov5670_configure_regulators(ov5670);
if (ret) {
dev_err(dev, "Failed to get power regulators\n");
return ret;
}
ret = ov5670_parse_of(ov5670);
if (ret != 0)
return -EINVAL;
ov5670->pinctrl = devm_pinctrl_get(dev);
if (!IS_ERR(ov5670->pinctrl)) {
ov5670->pins_default =
pinctrl_lookup_state(ov5670->pinctrl,
OF_CAMERA_PINCTRL_STATE_DEFAULT);
if (IS_ERR(ov5670->pins_default))
dev_err(dev, "could not get default pinstate\n");
ov5670->pins_sleep =
pinctrl_lookup_state(ov5670->pinctrl,
OF_CAMERA_PINCTRL_STATE_SLEEP);
if (IS_ERR(ov5670->pins_sleep))
dev_err(dev, "could not get sleep pinstate\n");
}
mutex_init(&ov5670->mutex);
sd = &ov5670->subdev;
v4l2_i2c_subdev_init(sd, client, &ov5670_subdev_ops);
ret = ov5670_initialize_controls(ov5670);
if (ret)
goto err_destroy_mutex;
ret = __ov5670_power_on(ov5670);
if (ret)
goto err_free_handler;
ret = ov5670_check_sensor_id(ov5670, client);
if (ret < 0) {
dev_info(&client->dev, "%s(%d) Check id failed\n"
"check following information:\n"
"Power/PowerDown/Reset/Mclk/I2cBus !!\n",
__func__, __LINE__);
goto err_power_off;
}
ov5670_otp_check_read(ov5670);
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
sd->internal_ops = &ov5670_internal_ops;
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
#endif
#if defined(CONFIG_MEDIA_CONTROLLER)
ov5670->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, 1, &ov5670->pad);
if (ret < 0)
goto err_power_off;
#endif
memset(facing, 0, sizeof(facing));
if (strcmp(ov5670->module_facing, "back") == 0)
facing[0] = 'b';
else
facing[0] = 'f';
snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s",
ov5670->module_index, facing,
OV5670_NAME, dev_name(sd->dev));
ret = v4l2_async_register_subdev_sensor_common(sd);
if (ret) {
dev_err(dev, "v4l2 async register subdev failed\n");
goto err_clean_entity;
}
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
pm_runtime_idle(dev);
return 0;
err_clean_entity:
#if defined(CONFIG_MEDIA_CONTROLLER)
media_entity_cleanup(&sd->entity);
#endif
err_power_off:
__ov5670_power_off(ov5670);
err_free_handler:
v4l2_ctrl_handler_free(&ov5670->ctrl_handler);
err_destroy_mutex:
mutex_destroy(&ov5670->mutex);
return ret;
}
static int ov5670_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ov5670 *ov5670 = to_ov5670(sd);
v4l2_async_unregister_subdev(sd);
#if defined(CONFIG_MEDIA_CONTROLLER)
media_entity_cleanup(&sd->entity);
#endif
v4l2_ctrl_handler_free(&ov5670->ctrl_handler);
mutex_destroy(&ov5670->mutex);
pm_runtime_disable(&client->dev);
if (!pm_runtime_status_suspended(&client->dev))
__ov5670_power_off(ov5670);
pm_runtime_set_suspended(&client->dev);
return 0;
}
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id ov5670_of_match[] = {
{ .compatible = "ovti,ov5670" },
{},
};
MODULE_DEVICE_TABLE(of, ov5670_of_match);
#endif
static const struct i2c_device_id ov5670_match_id[] = {
{ "ovti,ov5670", 0 },
{ },
};
static struct i2c_driver ov5670_i2c_driver = {
.driver = {
.name = OV5670_NAME,
.pm = &ov5670_pm_ops,
.of_match_table = of_match_ptr(ov5670_of_match),
},
.probe = &ov5670_probe,
.remove = &ov5670_remove,
.id_table = ov5670_match_id,
};
static int __init sensor_mod_init(void)
{
return i2c_add_driver(&ov5670_i2c_driver);
}
static void __exit sensor_mod_exit(void)
{
i2c_del_driver(&ov5670_i2c_driver);
}
device_initcall_sync(sensor_mod_init);
module_exit(sensor_mod_exit);
MODULE_DESCRIPTION("OmniVision ov5670 sensor driver");
MODULE_LICENSE("GPL v2");
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