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device: si114x: Address overflow condition

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If proximity overflow (daylight), we would still assume the data was valid
and consider there is an object very very close.
That would prevent the light to be measured. (cl/312982)

Leave the value as max range for the HAL to handle.

BRANCH=smaug
BUG=b:25573958
TEST=Check in daylight that light is still measured

Change-Id: I684e6f4a9aecd3fd6b338a9939f7ede26752ecb8
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/314921
Reviewed-by: Alec Berg <alecaberg@chromium.org>
This commit is contained in:
Gwendal Grignou
2015-11-30 13:25:14 -08:00
committed by chrome-bot
parent 7f6862e5e0
commit 02ddede08e
2 changed files with 2 additions and 1 deletions
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2
driver/als_si114x.c
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@@ -96,7 +96,7 @@ static int si114x_read_results(struct motion_sensor_t *s, int nb)
/* Add offset, calibration */
if (val + type_data->offset <= 0) {
val = 1;
} else {
} else if (val != SI114X_OVERFLOW) {
val += type_data->offset;
/*
* Proxmitiy sensor data is inverse of the distance.

1
driver/als_si114x.h
View File

@@ -206,6 +206,7 @@
/* Proximity sensor finds an object within 5 cm, disable light sensor */
#define SI114X_COVERED_THRESHOLD 5
#define SI114X_OVERFLOW 0xffff
extern const struct accelgyro_drv si114x_drv;