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iio: cros_ec: Add sign vector in core for backward compatibility

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To allow cros_ec iio core library to be used with legacy device, add a
vector to rotate sensor data if necessary: legacy devices are not
reporting data in HTML5/Android sensor referential.

Check the data is not rotated on recent chromebooks that use the HTML5
standard to present sensor data.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Gwendal Grignou
2019-07-15 16:14:51 -07:00
committed by Jonathan Cameron
parent 3cf9df0095
commit 12bf745c9a
2 changed files with 5 additions and 1 deletions
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include/linux/iio/common/cros_ec_sensors_core.h
+1 -1
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@@ -66,7 +66,7 @@ struct cros_ec_sensors_core_state {
s16 offset;
u16 scale;
} calib[CROS_EC_SENSOR_MAX_AXIS];
s8 sign[CROS_EC_SENSOR_MAX_AXIS];
u8 samples[CROS_EC_SAMPLE_SIZE];
int (*read_ec_sensors_data)(struct iio_dev *indio_dev,