Factor out fan speed control for easier adjusting fan speed stepping.
Also increase number of fan speed steps from 2 to 5.
Signed-off-by: Vic Yang <victoryang@google.com>
BUG=chrome-os-partner:8466
TEST=Manual test.
Change-Id: I0ff601c0a4f2ed2a4867bdc6e550eb2827404754
Group temperature sensors into different types so we only have to set
temperature threshold for each type instead of each sensor.
Signed-off-by: Vic Yang <victoryang@google.com>
BUG=chrome-os-partner:8466
TEST=Fan control still works.
Change-Id: I7acc714c32f282cec490b9e02d402ab91a53becf
Make temp sensor report 0xfd when sensor is unpowered.
Also refactor power specification of temp sensors from thermal.c to
temp_sensor.c.
Signed-off-by: Vic Yang <victoryang@google.com>
BUG=chrome-os-partner:8279
TEST=none
Change-Id: Ib13813bdbac2f048fbc3b98fae5bbf104ebf37d7
Implement LPC commands and ectool commands to
1. Set/get threshold temperature values.
2. Toggle on/off automatic fan speed control.
Signed-off-by: Vic Yang <victoryang@chromium.org>
BUG=chrome-os-partner:8251
TEST=Manual test
Change-Id: Ia4282a6fa47a838aed26540f33c1eb7acc92ef0e
The thermal engine monitors the temperature readings from all sensors.
For each sensor, five threshold temperatures can be set:
1. Low fan speed.
2. High fan speed.
3. SMI warning.
4. Shutdown CPU.
5. Shutdown everything we can.
Each of these thresholds can be set to either a fixed value or disabled.
Currently the real implementation of SMI warning and shutting down is
left as TODO, as indicated in the comment.
Signed-off-by: Vic Yang <victoryang@chromium.org>
BUG=chrome-os-partner:8250
TEST=Manually change threshold value to test all actions can be triggered.
Change-Id: If168dcff78ef2d7a3203cb227e1739a08eca961e
