msm8974 camera driver添加新摄像头kernel hal修改

最新推荐文章于 2023-11-23 10:10:14 发布

转载最新推荐文章于 2023-11-23 10:10:14 发布 · 2.7k 阅读

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本文介绍如何集成OV5648摄像头到Linux系统中。包括添加内核驱动、配置编译选项、更新设备树、修改HAL层代码及调试步骤。适合于嵌入式系统开发者。

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添加一款新摄像头流程

1添加sensor kernel driver, 主要实现上电、rst、pwd、mclk等power setting，sensor prob & sensor i2c driver prob 和 v4l2_subdev 注册

\kernel\drivers\media\platform\msm\camera_v2\sensor\ov5648.c

2 添加编译选项

obj-$(CONFIG_OV5648)+= ov5648.o

kernel\drivers\media\platform\msm\camera_v2\sensor\Makefile

3 添加编译开关

CONFIG_OV5648=y

kernel/arch/arm/configs/msm8974_defconfig

kernel/arch/arm/configs/msm8974-perf_defconfig

config OV5648

bool "Sensor OV5648 (BAYER 5M)"

depends on MSMB_CAMERA

---help---

OmniVision 5 MP Bayer Sensor,supports 2 mipi lanes,

preview and snapshot config at1932 * 1092 at 30 fps,

hfr video at 60, 90 and 120 fps.This sensor driver does

not support auto focus.

kernel/drivers/media/platform/msm/camera_v2/Kconfig

4 device tree 修改

添加相应sensor的device tree描述

Kenel/arch/arm/boot/dts/msm8974-camera-sensor-cdp.dtsi

+ qcom,camera@6c {
+ compatible = "qcom,ov5648";
+ reg = <0x6c 0x0>;
+ qcom,slave-id = <0x6c 0x300A 0x5648>;
+ qcom,csiphy-sd-index = <2>;
+ qcom,csid-sd-index = <2>;
+ qcom,mount-angle = <90>;
+ qcom,sensor-name = "ov5648";
+ qcom,vdd-cx-supply = <&pm8841_s2>;
+ qcom,vdd-cx-name = "qcom,vdd-cx";
+ cam_vdig-supply = <&pm8941_l22>;
+ cam_vana-supply = <&pm8941_l17>;
+ cam_vio-supply = <&pm8941_lvs3>;
+ qcom,cam-vreg-name = "cam_vdig", "cam_vana", "cam_vio";
+ qcom,cam-vreg-type = <0 0 1>;
+ qcom,cam-vreg-min-voltage = <1500000 2800000 0>;
+ qcom,cam-vreg-max-voltage = <1500000 2800000 0>;
+ qcom,cam-vreg-op-mode = <105000 80000 0>;
+ qcom,gpio-no-mux = <0>;
+ gpios = <&msmgpio 17 0>,
+ <&msmgpio 18 0>,
+ <&msmgpio 89 0>;
+ qcom,gpio-reset = <1>;
+ qcom,gpio-standby = <2>;
+ qcom,gpio-req-tbl-num = <0 1 2>;
+ qcom,gpio-req-tbl-flags = <1 0 0>;
+ qcom,gpio-req-tbl-label = "CAMIF_MCLK",
+ "CAM_RESET1",
+ "CAM_STANDBY";
+ qcom,gpio-set-tbl-num = <1 1>;
+ qcom,gpio-set-tbl-flags = <0 2>;
+ qcom,gpio-set-tbl-delay = <1000 30000>;
+ qcom,csi-lane-assign = <0x4320>;
+ qcom,csi-lane-mask = <0x7>;
+ qcom,sensor-position = <1>;
+ qcom,sensor-mode = <1>;
+ qcom,sensor-type = <0>;
+ qcom,cci-master = <1>;
+ status = "ok";
+ };

5 hal层修改，添加hal层sensor libs 代码，实现对应sensor的init setting, preview setting, 各种resolution setting , group on ,group off，csi csid config etc. customer 端sensor主要实现

vendor\qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\sensor_libs\ ov5648

6 hal层 raw camera效果调试文件

vendor\qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\chromatix\0301\libchromatix\ chromatix_ov5648

7 hal层编译

MM_CAMERA +=libmmcamera_ov5648

MM_CAMERA +=libchromatix_ov5648_common

MM_CAMERA +=libchromatix_ov5648_preview

MM_CAMERA +=libchromatix_ov5648_default_video

MM_CAMERA +=libchromatix_ov5648_hfr

MM_CAMERA +=libchromatix_ov5648_zsl

vendor/qcom/proprietary/common/config/device-vendor.mk

End