Touch Log 打开方法（MTK）

1. 进入debug 模式，打开 开发者模式 中的显示点按操作反馈

2. 打开android Framework log

First, enable view input logs
adb root
adb shell "setprop mtk_d.viewroot.enable 707000"

After framework restart(adb shell stop/start) enable native input logs
/*inputReader touch 的log 开法
adb shell setprop sys.input.TouchFilterEnable true
adb shell setprop sys.input.TouchFilterLogEnable true
/*inputDispatcher的log 开法
adb shell setprop sys.inputlog.enabled true
adb shell dumpsys input

复测前输入
adb shell setprop log.tag.InputDispatcherInboundEvent DEBUG
adb shell setprop log.tag.InputTransportTransportActions DEBUG

不用重启手机就可以生效，重启手机后会失效。

1. 动态开启APP层LOG方法如下：

adb shell setprop debug.viewroot.enable 7000
(P版本这个属性名称换了，换成mtk_d.viewroot.enable了， 故P版本后这句要换成
adb shell setprop mtk_d.viewroot.enable 7000 )
adb shell setprop debug.view.keylog true
adb shell setprop debug.view.touchlog true
adb shell setprop debug.view.motionlog true
adb shell setprop debug.inputclient.enable 1
adb shell stop
adb shell start

需等待手机软重启后才能生效

1. kernel event的查看方法
   adb shell getevent -i
adb shell getevent -tlr

需添加的Log

在分析Touch问题时，可在Touch driver的中断函数中加入log对触摸进行追踪
例如如下log：

行 205417: <6>[13247.422097] .(1)[433:irq/33-goodix_t][GTP-INF][goodix_ts_threadirq_func:1293] goodix_ts_threadirq_func IN!
行 205419: <6>[13247.423564] .(1)[433:irq/33-goodix_t][GTP-INF][goodix_event_handler:1654] goodix_event_handler IN!
行 205422: <6>[13247.503799] .(1)[433:irq/33-goodix_t][GTP-INF][goodix_i2c_read_trans:325] goodix_i2c_read_trans in
行 205427: <6>[13247.897794] .(1)[433:irq/33-goodix_t][GTP-INF][goodix_i2c_read_trans:381] goodix_i2c_read_trans out
行 205429: <6>[13247.898684] .(1)[433:irq/33-goodix_t][GTP-INF][goodix_event_handler:1670] ic_type = 3
行 205432: <6>[13248.223617] .(1)[433:irq/33-goodix_t][GTP-INF][goodix_event_handler:1671] return checksum_u8_ys =0
行 205435: <6>[13248.284083] .(1)[433:irq/33-goodix_t][GTP-INF][goodix_event_handler:1707] goodix_event_handler OUT!
行 205437: <6>[13248.367879] .(1)[7602:kworker/1:0][GTP-INF][goodix_i2c_read_trans:325] goodix_i2c_read_trans in
行 205438: <6>[13248.368066] .(1)[7602:kworker/1:0][GTP-INF][goodix_i2c_read_trans:381] goodix_i2c_read_trans out
行 205444: <6>[13248.478453] .(1)[433:irq/33-goodix_t][GTP-INF][goodix_ts_threadirq_func:1328] goodix_ts_threadirq_func OUT!
行 205446: <6>[13248.480243] .(6)[433:irq/33-goodix_t][GTP-INF][goodix_ts_threadirq_func:1293] goodix_ts_threadirq_func IN!
行 205448: <6>[13248.481548] .(6)[433:irq/33-goodix_t][GTP-INF][goodix_event_handler:1654] goodix_event_handler IN!
行 205450: <6>[13248.900707] .(6)[433:irq/33-goodix_t][GTP-INF][goodix_i2c_read_trans:325] goodix_i2c_read_trans in
行 205451: <6>[13248.901870] .(0)[433:irq/33-goodix_t][GTP-INF][goodix_i2c_read_trans:381] goodix_i2c_read_trans out
行 205453: <6>[13248.904084] .(0)[433:irq/33-goodix_t][GTP-INF][goodix_event_handler:1670] ic_type = 3
行 205454: <6>[13248.904102] .(0)[433:irq/33-goodix_t][GTP-INF][goodix_event_handler:1671] return checksum_u8_ys =0
行 205455: <6>[13248.918160] .(0)[433:irq/33-goodix_t][GTP-INF][goodix_event_handler:1707] goodix_event_handler OUT!
行 205456: <6>[13248.919639] .(0)[433:irq/33-goodix_t][GTP-INF][goodix_ts_threadirq_func:1328] goodix_ts_threadirq_func OUT!
行 205457: <6>[13248.921225] .(7)[433:irq/33-goodix_t][GTP-INF][goodix_ts_threadirq_func:1293] goodix_ts_threadirq_func IN!
行 205458: <6>[13248.922475] .(7)[433:irq/33-goodix_t][GTP-INF][goodix_event_handler:1654] goodix_event_handler IN!
行 205459: <6>[13248.923628] .(7)[433:irq/33-goodix_t][GTP-INF][goodix_i2c_read_trans:325] goodix_i2c_read_trans in
行 205460: <6>[13248.925483] .(0)[433:irq/33-goodix_t][GTP-INF][goodix_i2c_read_trans:381] goodix_i2c_read_trans out
行 205461: <6>[13248.926680] .(0)[433:irq/33-goodix_t][GTP-INF][goodix_event_handler:1670] ic_type = 3
行 205462: <6>[13248.927706] .(0)[433:irq/33-goodix_t][GTP-INF][goodix_event_handler:1671] return checksum_u8_ys =0
行 205463: <6>[13248.929092] .(0)[433:irq/33-goodix_t][GTP-INF][goodix_event_handler:1707] goodix_event_handler OUT!
行 205464: <6>[13248.930501] .(0)[433:irq/33-goodix_t][GTP-INF][goodix_ts_threadirq_func:1328] goodix_ts_threadirq_func OUT!

通过log是否打出以及打出时间与流程可以对问题进行判断