高通linux-camera系统简介

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1. 概述

用户空间，主要工程：

vslam/

libroboticscamera/

media/

rb-mm-camera/      rb-mm-3a-core/      rb-mm-camera-core/      rb-mm-camera-lib/

rb-camera/            

 

内核：

linux-msm/drivers/media/platform/msm/camera_v2/

 

sensor路径：

rb-mm-camera/mm-camera2/media-controller/modules/sensors/sensor_libs/

2. 分析

1. 设备树内容内容

1. 
   qcom,camera@0 {
2. cell-index = <0>;
3. compatible = "qcom,camera";
4. reg = <0x2>;
5. qcom,csiphy-sd-index = <0>;
6. qcom,csid-sd-index = <0>;
7. qcom,mount-angle = <90>;
8. qcom,actuator-src = <&actuator0>;
9. qcom,led-flash-src = <&led_flash0>;
10. qcom,eeprom-src = <&eeprom0>;
11. cam_vdig-supply = <&pm8909_l2>;
12. cam_vana-supply = <&pm8909_l17>;
13. cam_vio-supply = <&pm8909_l6>;
14. cam_vaf-supply = <&pm8909_l8>;
15. qcom,cam-vreg-name = "cam_vdig", "cam_vio", "cam_vana",
16.       "cam_vaf";
17. qcom,cam-vreg-type = <0 1 0 0>;
18. qcom,cam-vreg-min-voltage = <1200000 0 2800000 2850000>;
19. qcom,cam-vreg-max-voltage = <1200000 0 2850000 2900000>;
20. qcom,cam-vreg-op-mode = <200000 0 80000 100000>;
21. pinctrl-names = "cam_default", "cam_suspend";
22. pinctrl-0 = <&cam_sensor_mclk0_default
23.   &cam_sensor_rear_default>;
24. pinctrl-1 = <&cam_sensor_mclk0_sleep &cam_sensor_rear_sleep>;
25. gpios = <&msm_gpio 26 0>,
26.  <&msm_gpio 35 0>,
27.  <&msm_gpio 34 0>;
28. qcom,gpio-reset = <1>;
29. qcom,gpio-standby = <2>;
30. qcom,gpio-req-tbl-num = <0 1 2>;
31. qcom,gpio-req-tbl-flags = <1 0 0>;
32. qcom,gpio-req-tbl-label = "CAMIF_MCLK",
33.  "CAM_RESET1",
34.  "CAM_STANDBY";
35. qcom,sensor-position = <0>;
36. qcom,sensor-mode = <0>;
37. qcom,cci-master = <0>;
38. status = "ok";
39. clocks = <&clock_gcc 0x266b3853>,
40.   <&clock_gcc 0x80902deb>;
41. clock-names = "cam_src_clk", "cam_clk";
42. qcom,clock-rates = <24000000 0>;
43. };

 

3. 参考资料说明

 

【1】高通camera基本代码架构

http://www.cnblogs.com/thjfk/p/4086001.html  

 

【2】Chromatix

http://www.cnblogs.com/thjfk/p/3030044.html