高通camx debug log 控制 及 UseCase pipeline debug（四）
如题，log开的好，问题都能搞。
Camera user mode driver (UMD)
出于调试目的，有两种方法可以覆盖相机驱动程序的默认设置
方法一： Push a configuration file to/vendor/etc/camera/camxoverridesettings.txt
例如：
adb root
adb remount
adb shell "echo logInfoMask=0x2 >> /vendor/etc/camera/camxoverridesettings.txt"方法二：安卓系统属性设置:
adb shell setprop
例如：
adb shell setprop persist.vendor.camera.logInfoMask 0x2注意：有的配置需要杀 camera 进程 或者 重启设备 才能生效
所有的camera debug log 遵循下面的格式:
CamX: [
例如：
CamX: [INFO][CORE] camxexamplefile:123 ExampleFunction()This is the message.camera driver debug log 分割成了很多组，每组对应很多的log，使能这部分log需要设置正确的bitmask，规则如下：
| Driver Group Name |
Value |
Description |
| CamxLogGroupNone |
(1 << 0) |
Generic default group |
| CamxLogGroupSensor |
(1 << 1) |
Sensor |
| CamxLogGroupIFace |
(1 << 2) |
IFace |
| CamxLogGroupISP |
(1 << 3) |
ISP |
| CamxLogGroupPProc |
(1 << 4) |
Post processor |
| CamxLogGroupHAL |
(1 << 7) |
HAL |
| CamxLogGroupJPEG |
(1 << 8) |
JPEG |
| CamxLogGroupStats |
(1 << 9) |
3A algorithms |
| CamxLogGroupCSL |
(1 << 10) |
Camera service layer |
| CamxLogGroupUtils |
(1 << 12) |
Utilities |
| CamxLogGroupSync |
(1 << 13) |
Synchronization/mutex/fences |
| CamxLogGroupMemSpy |
(1 << 14) |
Memory tracker |
| CamxLogGroupCore |
(1 << 16) |
Core camera system |
| CamxLogGroupHWL |
(1 << 17) |
Hardware layer |
| CamxLogGroupChi |
(1 << 18) |
Camera HAL interface |
| CamxLogGroupDRQ |
(1 << 19) |
Deferred request queue |
| CamxLogGroupFD |
(1 << 20) |
Face detection |
Camera kernel mode driver (KDM) logs
备注：一般调试全开即可
adb shell "echo 0xFFFFFFFF > /sys/module/cam_debug_util/parameters/debug_mdl"| KMD Group |
Value |
Description |
| CAM_CDM |
(1 << 0) |
Camera data mover |
| CAM_CORE |
(1 << 1) |
Camera core |
| CAM_CPAS |
(1 << 2) |
Camera peripherals and support |
| CAM_ISP |
(1 << 3) |
Image signal processor |
| CAM_CRM |
(1 << 4) |
Camera request manager |
| CAM_SENSOR |
(1 << 5) |
Sensor |
| CAM_SMMU |
(1 << 6) |
Shared memory management unit |
| CAM_SYNC |
(1 << 7) |
Synchronization |
| CAM_ICP |
(1 << 8) |
Image control processor |
| CAM_JPEG |
(1 << 9) |
JPEG |
| CAM_FD |
(1 << 10) |
Face detection |
| CAM_LRME |
(1 << 11) |
Low resolution motion estimation |
| CAM_FLASH |
(1 << 12) |
Flash |
| CAM_ACTUATOR |
(1 << 13) |
Actuator |
| CAM_CCI |
(1 << 14) |
Camera control interface |
| CAM_CSIPHY |
(1 << 15) |
Camera serial interface |
| CAM_EEPROM |
(1 << 16) |
Electronically erasable programmable read-Only memory |
| CAM_UTIL |
(1 << 17) |
Utilities |
| CAM_HFI |
(1 << 18) |
Host-firmware interface |
| CAM_CTXT |
(1 << 19) |
Camera context |
| CAMX_OIS |
(1 << 20) |
Optical image stabilization |
使能 camera kernel driver log：
例如：
使能 CAM_SENSOR 和 CAM_ICP 在KMD log中，使用命令：
adb root
adb remount
adb shell “echo 0x120 > /sys/module/cam_debug_util/parameters/debug_mdl”
adb shell cat /proc/kmsg > name_of_kmd_logs.txt要动态启用CSID IRQ日志，使用命令：
adb shell “echo MASKVALUE > /sys/kernel/debug/camera_ife/ife_csid_debug”
例如:
使能 SOF, EOF, SOT, EOT IRQs:
adb shell “echo 0xf > /sys/kernel/debug/camera_ife/ife_csid_debug”| CSID Debug Group |
Value |
Description |
| CSID_DEBUG_ENABLE_SOF_IRQ |
(1 << 0) |
Start of frame |
| CSID_DEBUG_ENABLE_EOF_IRQ |
(1 << 1) |
End of frame |
| CSID_DEBUG_ENABLE_SOT_IRQ |
(1 << 2) |
Start of transmission |
| CSID_DEBUG_ENABLE_EOT_IRQ |
(1 << 3) |
End of transmission |
| CSID_DEBUG_ENABLE_SHORT_PKT_CAPTURE |
(1 << 4) |
Short packet capture |
| CSID_DEBUG_ENABLE_LONG_PKT_CAPTURE |
(1 << 5) |
Long packet capture |
| CSID_DEBUG_ENABLE_CPHY_PKT_CAPTURE |
(1 << 6) |
CPHY packet capture |
（TODO: 有时间需整理mipi协议）
2. 使能 CSIPHY log
adb shell “echo 1 > /sys/module/cam_csiphy_core/parameters/csiphy_dump”
adb shell cat /proc/kmsg > name_of_kmd_logs.txtUseCase pipeline debug（Topology log）
以 UsecaseJPEGEncodeLiveSnapshot pipeline 为例：
CamX : [ INFO][CORE ] camxhaldevice.cpp:200 SelectUsecase() Topology: Selected Usecase UsecaseJPEGEncodeLiveSnapshot
CamX : [ INFO][CORE ] camxpipeline.cpp:292 CreateNodes() Topology: Creating Pipeline, numNodes 9 isRealTime 1
CamX : [ INFO][CORE ] camxpipeline.cpp:309 CreateNodes() Topology: Node:InstanceId Sensor:0 Type 0 numInputPorts 0 numOutputPorts 1
CamX : [ INFO][CORE ] camxpipeline.cpp:309 CreateNodes() Topology: Node:InstanceId IFE:0 Type 65536 numInputPorts 1 numOutputPorts 5
CamX : [ INFO][CORE ] camxpipeline.cpp:309 CreateNodes() Topology: Node:InstanceId Stats:0 Type 1 numInputPorts 2 numOutputPorts 1
CamX : [ INFO][CORE ] camxpipeline.cpp:309 CreateNodes() Topology: Node:InstanceId AutoFocus:0 Type 5 numInputPorts 1 numOutputPorts 1
CamX : [ INFO][CORE ] camxpipeline.cpp:309 CreateNodes() Topology: Node:InstanceId BPS:0 Type 65539 numInputPorts 1 numOutputPorts 1
CamX : [ INFO][CORE ] camxnode.cpp:419 InitializeSinkPortBufferProperties() Topology: IPE:0 has a sink port id 8 using format 13 dim 1920x1080
CamX : [ INFO][CORE ] camxnode.cpp:419 InitializeSinkPortBufferProperties() Topology: IPE:0 has a sink port id 9 using format 13 dim 1920x1080
CamX : [ INFO][CORE ] camxpipeline.cpp:309 CreateNodes() Topology: Node:InstanceId IPE:0 Type 65538 numInputPorts 1 numOutputPorts 2
CamX : [ INFO][CORE ] camxpipeline.cpp:309 CreateNodes() Topology: Node:InstanceId IPE:1 Type 65538 numInputPorts 1 numOutputPorts 1
CamX : [ INFO][CORE ] camxpipeline.cpp:309 CreateNodes() Topology: Node:InstanceId JPEG Encoder:0 Type 65537 numInputPorts 1 numOutputPorts 1
CamX : [ INFO][CORE ] camxnode.cpp:419 InitializeSinkPortBufferProperties() Topology: JPEG Aggregator:0 has a sink port id 1 using format 0 dim 3840x2160
CamX : [ INFO][CORE ] camxpipeline.cpp:309 CreateNodes() Topology: Node:InstanceId JPEG Aggregator:0 Type 6 numInputPorts 1 numOutputPorts 1
CamX : [ INFO][CORE ] camxpipeline.cpp:371 CreateNodes() Topology: Link: Sensor:0(outPort 0) --> (inPort 2)IFE:0 using format 0
CamX : [ INFO][CORE ] camxpipeline.cpp:371 CreateNodes() Topology: Link: IFE:0(outPort 17) --> (inPort 0)Stats:0 using format 6
CamX : [ INFO][CORE ] camxpipeline.cpp:371 CreateNodes() Topology: Link: IFE:0(outPort 21) --> (inPort 1)Stats:0 using format 6
CamX : [ INFO][CORE ] camxpipeline.cpp:371 CreateNodes() Topology: Link: IFE:0(outPort 20) --> (inPort 4)AutoFocus:0 using format 6
CamX : [ INFO][CORE ] camxpipeline.cpp:371 CreateNodes() Topology: Link: IFE:0(outPort 8) --> (inPort 0)BPS:0 using format 9
CamX : [ INFO][CORE ] camxpipeline.cpp:371 CreateNodes() Topology: Link: IFE:0(outPort 0) --> (inPort 0)IPE:0 using format 3
CamX : [ INFO][CORE ] camxpipeline.cpp:371 CreateNodes() Topology: Link: BPS:0(outPort 1) --> (inPort 0)IPE:1 using format 12
CamX : [ INFO][CORE ] camxpipeline.cpp:371 CreateNodes() Topology: Link: IPE:1(outPort 8) --> (inPort 0)JPEG Encoder:0 using format 3
CamX : [ INFO][CORE ] camxpipeline.cpp:371 CreateNodes() Topology: Link: JPEG Encoder:0(outPort 1) --> (inPort 0)JPEG Aggregator:0 using format 3根据上述log，可以找到 chi-cdk/vendor/topology 下面的 UsecaseJPEGEncodeLiveSnapshot 参考 usecase 、pipeline 的xml
文件应该可以画出以下usecase 拓展图（没有画 inport 和 outport，可理解为每个pipeline必有进有出）
在熟练掌握 UDM KDM 及 usecase 的 debug 流程之后，解起问题称心如意。如果不是这样，那一定是你的log 没加对，自省。