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amlogic-android9.0-hdmi调试
1、读取edid原始数据
cat ./sys/devices/virtual/amhdmitx/amhdmitx0/rawedid
00ffffffffffff0025e4032301010101011d0103805022782a96a1a355539f250a5054210800818081c0a9c0d1c001010101010101014eab70b8d1a042509060640820 4f3100001a000000fd00174c1f703c000a202020202020000000ff0053657269616c4e756d6265720a000000fc004c43442d474357513334315844015802033d704b10 0102030405202256585a23090707830100006a030c002000383c20000067d85dc401788001e30f0004e200cae60607018b6011e3056000e77c70a0d0a0295030203a00 204f3100001a565e00a0a0a0295030203500204f3100001a295900a0a038274030203a00204f3100001a000000000000000000000000ea- 1
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2、通过以下节点得到RX所支持的HDMI显示模式（分辨率）支持的情况
cat /sys/class/amhdmitx/amhdmitx0/disp_cap
480p60hz 720p60hz 1080i60hz 1080p60hz 1080p30hz 1080p24hz 2560x1080p60hz 2560x1080p60hz- 1
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3、设置分辨率
代码如下（示例）：
//设置分辨率为1080p 3440x1440p60hz
echo 1080p60hz > sys/class/display/mode- 1
//查看当前设备分辨率
cat sys/class/display/mode 1080p60hz- 1
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4、HDMI在Spec 1.4中已经定义了的颜色空间有
通过如下方式得到RX所支持的色彩空间/色深模式支持的情况
# cat /sys/class/amhdmitx/amhdmitx0/dc_cap 420,10bit 420,8bit 444,10bit 444,8bit 422,10bit 422,8bit rgb,10bit rgb,8bit- 1
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5、查看或者设置当前rx的color format参数
cat sys/class/amhdmitx/amhdmitx0/attr rgb,8bit echo rgb,8bit > sys/class/amhdmitx/amhdmitx0/attr- 1
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6、查看hdmi是否已连接
cat /sys/class/amhdmitx/amhdmitx0/hpd_state 0: 未连接 1：已连接- 1
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7、查看mipi是否已连接
cat /sys/class/mipi2hdmi_state/mipi2hdmi_state 0: 未连接 1：已连接- 1
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8、设置hdmi息屏
息屏设置： echo 1 > /sys/devices/virtual/amhdmitx/amhdmitx0/avmute 亮屏设置： echo 0 > /sys/devices/virtual/amhdmitx/amhdmitx0/avmute 或者 echo 0 > /sys/devices/virtual/amhdmitx/amhdmitx0/avmute- 1
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9、framework代码路径和调试抓取log:
vendor/amlogic/frameworks/services/systemcontrol/FormatColorDepth.h vendor/amlogic/frameworks/services/systemcontrol/FormatColorDepth.cpp vendor/amlogic/frameworks/services/systemcontrol/DisplayMode.h vendor/amlogic/frameworks/services/systemcontrol/DisplayMode.cpp 参考链接：https://blog.csdn.net/qq_30624591/article/details/103645940- 1
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9.0、 logcat | grep “setMboxOutputMode colorAttribute” -EC5
C:\Users\86182>adb shell w400:/ # logcat | grep "setMboxOutputMode colorAttribute" -EC5 SystemControl: write /sys/class/amhdmitx/amhdmitx0/valid_mode, val:1080p60hz422,8bit end SystemControl: isModeSupportDeepColorAttr mode = 1080p60hz, color = rgb,8bit SystemControl: write /sys/class/amhdmitx/amhdmitx0/valid_mode, val:1080p60hzrgb,8bit end SystemControl: get hdmi color attribute : [444,8bit], outputmode is: [1080p60hz] , and support color list is: [444,8bit422,8bitrgb,8bit] SystemControl: cur deepcolor attr value is equals to colorAttribute, Do not need set it SystemControl: setMboxOutputMode colorAttribute = 444,8bit SystemControl: [ubootenv] update value name [ubootenv.var.1080p60hz_deepcolor]: value [444,8bit] SystemControl: [ubootenv] update value name [ubootenv.var.colorattribute]: value [444,8bit] SystemControl: curMode = null outputmode = 1080p60hz chatty : uid=1000(system) composer@2.2-se expire 12 lines SystemControl: write /sys/class/display/mode, val:1080p60hz end- 1
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9.1 、logcat | grep “mode”
01-01 11:26:25.053 3361 3443 I SystemControl: write /sys/class/amhdmitx/amhdmitx0/hdcp_mode, val:-1 end 01-01 11:26:25.150 3361 3443 I SystemControl: isModeSupportDeepColorAttr mode = 1080p50hz, color = 444,8bit 01-01 11:26:25.150 3361 3443 I SystemControl: write /sys/class/amhdmitx/amhdmitx0/valid_mode, val:1080p50hz444,8bit end 01-01 11:26:25.168 3361 3443 I SystemControl: support current mode:[1080p50hz], deep color:[444,8bit] 01-01 11:26:25.168 3361 3443 I SystemControl: pang set hdmi frqMode50:[1080p50hz], outputmode is: [1080p60hz] , and support color list is: [444,8bit422,8bitrgb,8bit] 01-01 11:26:25.168 3361 3443 I SystemControl: curMode = null outputmode = 1080p60hz 01-01 11:26:25.371 3361 3443 I SystemControl: write /sys/class/display/mode, val:1080p60hz end 01-01 11:26:25.371 3361 3422 D SystemControl: [CPQControl]:GetHDRMode: mode is 32 01-01 11:26:25.371 3361 3422 D SystemControl: [CPQControl]:CheckOutPutMode: current output mode is 1080p60hz! 01-01 11:26:25.371 3361 3422 D SystemControl: [CPQControl]:CheckOutPutMode: output mode is 13! 01-01 11:26:25.380 3361 3443 I SystemControl: [ubootenv] update value name [ubootenv.var.hdmimode]: value [1080p60hz] 01-01 11:26:25.380 3361 3443 I SystemControl: set output mode:1080p60hz done 01-01 11:26:25.380 3373 3411 I MesonHwc: DualDisplayPipe::handleEvent set mode (1080p60hz) 01-01 11:26:25.395 3361 3443 I SystemControl: write /sys/class/display2/mode, val:panel end 01-01 11:26:25.420 3373 3411 I MesonHwc: add display mode (panel, 1920x1080, 60.000000) 01-01 11:26:25.420 3373 3411 D MesonHwc: update: (panel) mode (panel) 01-01 11:26:25.420 3373 3411 D MesonHwc: On mode change state: [Complete] 01-01 11:26:25.453 3373 3411 I MesonHwc: DualDisplayPipe::handleEvent set mode (panel) 01-01 11:26:25.453 3373 3411 D MesonHwc: received Uevent: change@/devices/platform/vout/extcon/setmode 01-01 11:26:25.453 3373 3411 D MesonHwc: received Uevent: DEVPATH=/devices/platform/vout/extcon/setmode 01-01 11:26:25.453 3373 3411 D MesonHwc: received Uevent: NAME=vout_excton_setmode 01-01 11:26:25.453 3373 3411 D MesonHwc: received Uevent: change@/devices/platform/vout/extcon/setmode 01-01 11:26:25.453 3373 3411 D MesonHwc: received Uevent: DEVPATH=/devices/platform/vout/extcon/setmode 01-01 11:26:25.453 3373 3411 D MesonHwc: received Uevent: NAME=vout_excton_setmode 01-01 11:26:25.464 3361 3443 I SystemControl: getBootEnv key:ubootenv.var.hdmimode value:1080p60hz 01-01 11:26:25.464 3373 3411 I MesonHwc: add display mode real dpi (34, 42) 01-01 11:26:25.464 3373 3411 I MesonHwc: add display mode (480p60hz) 01-01 11:26:25.464 3373 3411 I MesonHwc: add display mode real dpi (34, 50) 01-01 11:26:25.464 3373 3411 I MesonHwc: add display mode (576p50hz) 01-01 11:26:25.464 3373 3411 I MesonHwc: add display mode real dpi (61, 63) 01-01 11:26:25.464 3373 3411 I MesonHwc: add display mode (720p60hz) 01-01 11:26:25.464 3373 3411 I MesonHwc: add display mode real dpi (61, 63) 01-01 11:26:25.464 3373 3411 I MesonHwc: add display mode (720p50hz) 01-01 11:26:25.464 3373 3411 I MesonHwc: add display mode real dpi (92, 94) 01-01 11:26:25.464 3373 3411 I MesonHwc: add display mode (1080p50hz) 01-01 11:26:25.465 3373 3411 D MesonHwc: update: (1080p60hz) mode (480p60hz) 01-01 11:26:25.465 3373 3411 D MesonHwc: update: (1080p60hz) mode (576p50hz) 01-01 11:26:25.465 3373 3411 D MesonHwc: update: (1080p60hz) mode (720p60hz) 01-01 11:26:25.465 3373 3411 D MesonHwc: update: (1080p60hz) mode (720p50hz) 01-01 11:26:25.465 3373 3411 D MesonHwc: update: (1080p60hz) mode (1080p50hz) 01-01 11:26:25.465 3373 3411 D MesonHwc: On mode change state: [Complete]- 1
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- 原文地址：https://blog.csdn.net/qq_38312843/article/details/126372822
