camera 调用流程
imgsensor_probe
注册操作文件结构设备---》获取设备-》获取时钟-》获取上电--->gpio设置引脚 -----》i2c通信
imgsensor_open --->imgsensor_clk_enable_all_cg 原子操作 open 0 open 1
probe（imgsensor_driver_register---> imgsensor_ioctl ） sensor_idx 0, power 1 curr_sensor_name imx258_mipi_raw //0后摄 1前摄
camera
GPIO配置
打开 mediatek\dct\DrvGen.exe
选择 mediatek\custom\xiaoxi\kernel\dct\dct\codegen.dws 配置文件
设置前后摄像头的CMRST和CMPDN引脚，这是跟上电时序有关；
上电时序 reset
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\drivers\misc\mediatek\imgsensor\src\mt6765\camera_project\AGN_H231UO_M119_62S\camera_hw\imgsensor_cfg_table.c
配置CONFIG_CUSTOM_KERNEL_IMGSENSOR
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\arch\arm64\configs\AGN_H231UO_M119_62S_defconfig
CONFIG_IMGSENSOR_MAIN="s5k3l6_mipi_raw s5k3l8_mipi_raw"
CONFIG_IMGSENSOR_SUB="gc2375_mipi_raw gc02m2_mipi_raw" 兼容
复制相关camera
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\drivers\misc\mediatek\imgsensor\src\common\v1\imgsensor_sensor_list.c
头文件添加相关函数
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\drivers\misc\mediatek\imgsensor\src\common\v1\imgsensor_sensor_list.h
配置与imgsensor_sensor_list.c相同，hal层调用GetSensorInitFuncList
Z:\AGN_H231UO_M119_62S\alps\vendor\mediatek\proprietary\custom\mt6765\hal\imgsensor_src\sensorlist.cpp
上电
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\drivers\misc\mediatek\imgsensor\src\common\v1\imgsensor_hw.c
底层驱动文件
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\drivers\misc\mediatek\imgsensor\src\common\v1\imgsensor.c
具体ic驱动文件
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\drivers\misc\mediatek\imgsensor\src\mt6765\camera_project\AGN_H231UO_M119_62S\ov8856_mipi_raw\ov8856mipiraw_Sensor.c
i2c通信与上电IMGSENSOR_I2C_DRV_NAME_0 id 进行匹配
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\drivers\misc\mediatek\imgsensor\src\common\v1\imgsensor_i2c.c
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\drivers\misc\mediatek\imgsensor\src\mt6765\camera_project\AGN_H231UO_M119_62S\camera_hw\imgsensor_cfg_table.h
dts相关
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\arch\arm64\boot\dts\mediatek\AGN_H231UO_M119_62S\cust_mt6765_camera.dtsi
&kd_camera_hw1
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\arch\arm64\boot\dts\mediatek\AGN_H231UO_M119_62S\mt6765.dts
compatible = "mediatek,camera_hw";
hal层目录
Z:\AGN_H231UO_M119_62S\alps\vendor\mediatek\proprietary\custom\mt6765\hal\imgsensor\ver1
kernel层目录
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\drivers\misc\mediatek\imgsensor\src\common\v1
放入项目中的目录
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\drivers\misc\mediatek\imgsensor\src\mt6765\camera_project\AGN_H231UO_M119_62S
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\drivers\misc\mediatek\imgsensor\src\Kconfig
hal层调用 getNumberOfDevices()
Z:\AGN_H231UO_M119_62S\alps\vendor\mediatek\proprietary\hardware\mtkcam-android\main\hal\entry\legacy\module\LegacyCameraModule.cpp
镜像翻转
\\172.18.4.14\data4\H231_M119\H2110XO_220324\mtk_r0.mp1_idata_common\kernel-4.19\drivers\misc\mediatek\imgsensor\src\mt6765\camera_project\AGN_H2110XO_M127_R\gc5034_mipi_raw\gc5034mipi_Sensor.h
Z:\AGN_H231UO_M119_62S\alps\kernel-4.19\drivers\misc\mediatek\lens对焦文件
log 查看imgsensor是否到达
cd /sys/bus/i2c/devices
cd /sys/bus/i2c/drivers