diff options
| author | Gwendal Grignou <gwendal@chromium.org> | 2019-07-16 02:14:51 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2019-07-28 01:05:25 +0300 |
| commit | 12bf745c9afb6755acba186091bcbb61229f4165 (patch) | |
| tree | 8b5175bf53e45a8ad28e4ba06f8d33f32dd3ef35 /drivers/iio/common | |
| parent | 3cf9df00957fb27cb116761cd4d656aee06e40d3 (diff) | |
| download | linux-12bf745c9afb6755acba186091bcbb61229f4165.tar.xz | |
iio: cros_ec: Add sign vector in core for backward compatibility
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>
Diffstat (limited to 'drivers/iio/common')
| -rw-r--r-- | drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c index d02660b1f0fe..3b491cf7be95 100644 --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c @@ -101,6 +101,9 @@ int cros_ec_sensors_core_init(struct platform_device *pdev, } state->type = state->resp->info.type; state->loc = state->resp->info.location; + + /* Set sign vector, only used for backward compatibility. */ + memset(state->sign, 1, CROS_EC_SENSOR_MAX_AXIS); } return 0; @@ -303,6 +306,7 @@ static int cros_ec_sensors_read_data_unsafe(struct iio_dev *indio_dev, if (ret < 0) return ret; + *data *= st->sign[i]; data++; } |