Commit Graph

3 Commits

Author SHA1 Message Date
Ben Lok
a572c882e4 driver/temp_sensor: Add power control API for TMP432
Some boards didn't define the CONFIG_TEMP_SENSOR_POWER_GPIO (such as: Oak),
Due to the hardware design, the power of temp sensor is always on.
But, we can enable/disable the temperature measurement circuitry of tmp432 by
setup the shutdown (SD) bit. Add a new API: tmp432_set_power() to let upper
layer to control the power of tmp432 by SW approach for power saving.

BRANCH=none
BUG=chrome-os-partner:44170
TEST=manual
1. make BOARD=oak -j
2. Turn off the TMP432:
   > tmp432 power off
3. check whether tmp432 is shutdown:
   > tmp432
   ERROR: Temp sensor not powered.
   Not Powered
4. Turn on the TMP432:
   > tmp432 power on
5. check whether tmp432 is running:
   > tmp432
   Local:
     Temp        29C
     Therm Trip  85C
     High Alarm  85C
     Low Alarm    0C
   Remote1:
     Temp        27C
     Therm Trip  85C
     High Alarm  85C
     Low Alarm    0C
   Remote2:
     Temp        27C
     Therm Trip  85C
     High Alarm  85C
     Low Alarm    0C

   STATUS:  10000000
   CONFIG1: 00000000
   CONFIG2: 00111100

Change-Id: Iab95c4c0b0130baf3bce380a8132e08ded8d159e
Signed-off-by: Ben Lok <ben.lok@mediatek.com>
Reviewed-on: https://chromium-review.googlesource.com/295058
Reviewed-by: Rong Chang <rongchang@chromium.org>
2015-09-03 04:24:33 -07:00
Vijay Hiremath
1b45f6ed71 Driver: Add macros to conditionally compile the console commands
Added macros to conditionally compile the console commands to save the
memory. These macros can be enabled/disabled in the board specific files.

BUG=none
TEST=make buildall -j
BRANCH=none

Change-Id: I108a072c333762cd24ea973612202c9cc4d40914
Signed-off-by: Vijay Hiremath <vijay.p.hiremath@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/288950
Reviewed-by: Shawn N <shawnn@chromium.org>
2015-07-29 21:18:25 +00:00
ChromeOS Developer
d53fe7b79b Basic driver for tmp432 temperature sensor
This allows local and remote temp values to be added
to a board's list of temp sensors. It also adds a
'tmp432' EC console command to query temps
and set alert thresholds. Fractional degrees are not
supported. DPTF support is not addressed.

BUG=chrome-os-partner:23985
BRANCH=none
TEST=Add tmp432 support to a board with the sensor
then run the 'tmp432' and 'temps' EC console commands.

Signed-off-by: Dave Parker <dparker@chromium.org>

Change-Id: Ifee47cf4d4cf5eedef9ef2bfa2149f183f1d7a7b
Reviewed-on: https://chromium-review.googlesource.com/178688
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Queue: Dave Parker <dparker@chromium.org>
Tested-by: Dave Parker <dparker@chromium.org>
2013-12-07 00:57:24 +00:00