diff options
| author | Vincent Palatin <vpalatin@chromium.org> | 2018-06-21 17:20:32 +0200 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-07-10 09:45:55 -0700 |
| commit | 8948d52feed5514d5fbb69a20af6641f2c40a03f (patch) | |
| tree | 5ecd8384d794f8d1029c3173be2fe78d8699ea5f | |
| parent | ba4c0cf0558bc6966c4c7f358fbeb5b87c2e8745 (diff) | |
| download | chrome-ec-8948d52feed5514d5fbb69a20af6641f2c40a03f.tar.gz | |
fpsensor: put the sensor in low power mode when not used
Ensure we always put back the sensor in its lowest power mode when we
are no longer waiting for an event from it (e.g. finger detection).
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=poppy
BUG=b:110498334
TEST=On ZerbleBarn, measure the power consumption with
'dut-control pp1800_fpc_ma' and verify it stays even after running
fpcapture/fpenroll/fpmatch console or host commands.
TEST=On Meowth, verify that enrollment and unlock-on-match still work.
Change-Id: Iad2950d7ed15c536b9f2adff3e1f3df6b92c8d2c
Reviewed-on: https://chromium-review.googlesource.com/1125062
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
| -rw-r--r-- | common/fpsensor.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/common/fpsensor.c b/common/fpsensor.c index 85ca1f1e9c..f37fafa8c7 100644 --- a/common/fpsensor.c +++ b/common/fpsensor.c @@ -236,6 +236,8 @@ void fp_task(void) timeout_us = -1; if (mode & FP_MODE_ANY_WAIT_IRQ) gpio_enable_interrupt(GPIO_FPS_INT); + else + fp_sensor_low_power(); } else if (evt & (TASK_EVENT_SENSOR_IRQ | TASK_EVENT_TIMER)) { gpio_disable_interrupt(GPIO_FPS_INT); if (sensor_mode & FP_MODE_ANY_DETECT_FINGER) { @@ -261,6 +263,8 @@ void fp_task(void) if (sensor_mode & FP_MODE_ANY_WAIT_IRQ) { fp_sensor_configure_detect(); gpio_enable_interrupt(GPIO_FPS_INT); + } else { + fp_sensor_low_power(); } } } |