Add force off mode to ltc1695
- Setting 1 to sys fs pwm_off1 forces it to be off until
device become much hotter and value of 100 is written.
(# echo '1' > /sys/class/hwmon/hwmon1/pwm_off1)
- 100 is treated as a special value meaning force on. For this value,
force off will be ignored and fan will run in max speed.
Also force off state will be cleared as force off state
is not expected to last for too long.
- Upper layer can use this to slience fan for short time.
- Update phanbell h dts to force max the fan for temperature
above 70 degrees. If it is too hot, do not allow force off.
Bug: 120574255
Test: test by writing values to sys fs and also by loading system.
Change-Id: Ieb6776eaddd311b5f068a46457cdd0000b3a26c2
2 files changed
