平台 内核版本 安卓版本 PX3 Linux3.1 Android7.1

文章目录

• 改的目录：
• 部分修改内容如下：
• 设备名字添加
• make kconfig 相关修改
• 剩下这个四个文件

GM7150BN_BC是一款9位视频解码芯片，该芯片采用CMOS工艺，通过I2C总线与PC或DSP相连构成应用系统。芯片内部只包含一路模拟处理通道，能实现CVBS、S-Video视频信号源选择、A/D转换、自动钳位、自动增益控制（AGC）、时钟发生（CGC）、多制式解码、亮度/对比度/饱和度控制（BCS）。

改的目录：

内核目录下改动文件如下： arch/arm/mach-rk30/board-rk3168-tb-camera.c arch/arm/plat-rk/include/plat/rk_camera.h drivers/media/video/Kconfig drivers/media/video/Makefile drivers/media/video/gm7150.c drivers/media/video/gm7150.h drivers/video/rockchip/vehicle/Makefile drivers/video/rockchip/vehicle/vehicle_ad_gm7150.c drivers/video/rockchip/vehicle/vehicle_ad_gm7150.h .../rockchip/vehicle/vehicle_generic_sensor.c include/media/v4l2-chip-ident.h 其中新增文件如下： create mode 100644 drivers/media/video/gm7150.c create mode 100644 drivers/media/video/gm7150.h create mode 100644 drivers/video/rockchip/vehicle/vehicle_ad_gm7150.c create mode 100644 drivers/video/rockchip/vehicle/vehicle_ad_gm7150.h

部分修改内容如下：

目录：arch/arm/mach-rk30/board-rk3168-tb-camera.c
注册一个 Camera Sensor 设备只需要在 board 文件static struct rkcamera_platform_data 类型的new_camera[] 中定义一个 Camera 设备即可。 static struct rkcamera_platform_data new_camera[] = { ... +#ifdef CONFIG_SOC_CAMERA_GM7150 + new_camera_device(RK29_CAM_SENSOR_GM7150, + back, + RK30_PIN0_PA6, + 0, + 3,//bit0:0 1 bit1:0 1 default:0 + 3, + 0), +#endif new_camera_device(RK29_CAM_SENSOR_TVP5150, back, RK30_PIN0_PA6, 该函数原型如下： new_camera_device(sensor_name, face, pwdn_io, flash_attach, mir, i2c_chl, cif_chl) 其中： face Sensor 设备作为前置还是作为后置的配置；前置直接填写 front，后置直接填写 back pwdn_io Sensor 设 备 powerdown （ standby ） 连 接 GPIO 的 配 置 flash_attach 该 Sensor 设备是否连接 flash 闪光灯的配置 Mir 该 Sensor 设备的镜像配置 i2c_chl 该 Sensor 设备连接的 i2c 通道号配置 cif_chl cif的通道 其中mirde详细配置: bit0 0: mirror off 1: mirror on bit1 0: flip off 1: flip on

---

设备名字添加

Sensor设 备 名 字 ， 采 用arch/arm/plat-rk/include/plat/rk_camera.h #define RK29_CAM_SENSOR_DM5150 dm5150 +#define RK29_CAM_SENSOR_GM7150 gm7150 #define dm5150_SENSOR_ORIENTATION 90 +#define gm7150_SENSOR_ORIENTATION 90 #define dm5150_FULL_RESOLUTION 0x30000 // 0.3 megapixel +#define gm7150_FULL_RESOLUTION 0x30000 // 0.3 megapixel #define dm5150_I2C_ADDR 0xba +#define gm7150_I2C_ADDR 0xba #define dm5150_PWRDN_ACTIVE 0x00 +#define gm7150_PWRDN_ACTIVE 0x00 #define dm5150_PWRSEQ sensor_PWRSEQ_DEFAULT +#define gm7150_PWRSEQ sensor_PWRSEQ_DEFAULT

make kconfig 相关修改

接下来就是移植工作了：
目录：drivers/media/video/Kconfig + +config SOC_CAMERA_GM7150 + tristate "gm7150 camera support for rockchip" + depends on SOC_CAMERA && I2C + help + This is a gm7150 camera driver for rockchip 目录：drivers/media/video/Makefile `+obj-$(CONFIG_SOC_CAMERA_GM7150) += gm7150.o` drivers/video/rockchip/vehicle/Makefile `+obj-$(CONFIG_VIDEO_REVERSE_IMAGE) += vehicle_ad_gm7150.o`

文件目录：drivers/video/rockchip/vehicle/vehicle_generic_sensor.c +#include "vehicle_ad_gm7150.h" static struct vehicle_sensor_ops sensor_cb_series[] = { +#ifdef CONFIG_SOC_CAMERA_GM7150 + { + .name = STR(RK29_CAM_SENSOR_GM7150), + .sensor_init = gm7150_ad_init, + .sensor_deinit = gm7150_ad_deinit, + .sensor_get_cfg = gm7150_ad_get_cfg, + .sensor_check_cif_error = gm7150_ad_check_cif_error, + .sensor_check_id_cb = gm7150_check_id + }, +#endif 目录：include/media/v4l2-chip-ident.h + V4L2_IDENT_GM7150 = 274,

剩下这个四个文件

drivers/media/video/gm7150.c
drivers/media/video/gm7150.h drivers/video/rockchip/vehicle/vehicle_ad_gm7150.c
drivers/video/rockchip/vehicle/vehicle_ad_gm7150.h 可以从我的github仓库下载。