[转载] [GPIO]获取系统睡眠时GPIO状态的方法
可以透下指令的方式再 把 mobile log 抓回看1.後先行下面道指令
MT6589:?echo 1 > /sys/module/mt_sleep/parameters/slp_dump_gpioMT657X:?echo 1 > /sys/module/mt657x_sleep/parameters/slp_dump_gpio其中MT657X,表示MT6577、MT6575等
2. Mobile log 已打
3.USB 拔掉
4.按次power key? suspend /resume
5.之後把 mobile log 抓回
在kernel log里搜一下 Chip_pm_enter就可以找到如下面红色字体内容显示的 GPIO pin 的MT6589：<5>[? 171.745746]-0)[SLP] @@@@@@@@@@@@@@@@@@@@
<2>[? 171.745756]-0)[SLP] Chip_pm_enter
<5>[? 171.745762]-0)[SLP] @@@@@@@@@@@@@@@@@@@@
<4>[? 171.745770]-0)PIN: [MODE] [PULL_SEL] [DIN] [DOUT] [PULL EN] [DIR] [INV] [IES]
<4>[? 171.745787]-0)idx =?? 0: 1 0 0 0 1 0 0 1
<4>[? 171.745799]-0)idx =?? 1: 1 0 0 0 1 0 0 1
<4>[? 171.745811]-0)idx =?? 2: 1 0 0 0 1 0 0 1
<4>[? 171.745823]-0)idx =?? 3: 1 0 0 0 1 0 0 1
<4>[? 171.745835]-0)idx =?? 4: 1 0 1 1 0 1 0 1
<4>[? 171.745847]-0)idx =?? 5: 1 0 1 0 1 0 0 1
<4>[? 171.745859]-0)idx =?? 6: 1 0 0 0 1 1 0 1
<4>[? 171.745871]-0)idx =?? 7: 1 0 0 0 1 0 0 1
<4>[? 171.745883]-0)idx =?? 8: 1 0 0 0 1 0 0 1
<4>[? 171.745895]-0)idx =?? 9: 1 0 0 0 1 0 0 1
<4>[? 171.745907]-0)idx =? 10: 1 0 0 0 1 0 0 1
<4>[? 171.745919]-0)idx =? 11: 0 0 0 0 1 0 0 1
...?或者MT657X：?<5>[ 4584.601736] (0)[32:kworker/u:1][Power/Sleep] @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
<5>[ 4584.601748] (0)[32:kworker/u:1][Power/Sleep] _Chip_pm_enter @@@@@@@@@@@@@@@@@@@@@@
<5>[ 4584.601759] (0)[32:kworker/u:1][Power/Sleep]? @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
<4>[ 4584.601774] (0)[32:kworker/u:1]idx =?? 0: mode = 0, pullsel = 0, din = 0, dout = 0, pullen = 1, dir = 0, dinv = 0
<4>[ 4584.601788] (0)[32:kworker/u:1]idx =?? 1: mode = 0, pullsel = 0, din = 0, dout = 0, pullen = 1, dir = 0, dinv = 0
<4>[ 4584.601802] (0)[32:kworker/u:1]idx =?? 2: mode = 0, pullsel = 0, din = 0, dout = 0, pullen = 1, dir = 0, dinv = 0
<4>[ 4584.601816] (0)[32:kworker/u:1]idx =?? 3: mode = 0, pullsel = 0, din = 0, dout = 0, pullen = 1, dir = 0, dinv = 0
<4>[ 4584.601830] (0)[32:kworker/u:1]idx =?? 4: mode = 0, pullsel = 0, din = 0, dout = 0, pullen = 1, dir = 0, dinv = 0
<4>[ 4584.601843] (0)[32:kworker/u:1]idx =?? 5: mode = 0, pullsel = 0, din = 0, dout = 0, pullen = 1, dir = 0, dinv = 0
<4>[ 4584.601857] (0)[32:kworker/u:1]idx =?? 6: mode = 0, pullsel = 0, din = 0, dout = 0, pullen = 1, dir = 0, dinv = 0
<4>[ 4584.601870] (0)[32:kworker/u:1]idx =?? 7: mode = 0, pullsel = 0, din = 0, dout = 0, pullen = 1, dir = 0, dinv = 0
<4>[ 4584.601883] (0)[32:kworker/u:1]idx =?? 8: mode = 0, pullsel = 0, din = 0, dout = 0, pullen = 1, dir = 0, dinv = 0
<4>[ 4584.601897] (0)[32:kworker/u:1]idx =?? 9: mode = 0, pullsel = 0, din = 0, dout = 0, pullen = 1, dir = 0, dinv = 0
<4>[ 4584.601910] (0)[32:kworker/u:1]idx =? 10: mode = 0, pullsel = 0, din = 0, dout = 0, pullen = 1, dir = 0, dinv = 0...