iio: cros_ec: Add sign vector in core for backward compatibility (12bf745c) · Commits · 戴 / test

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>

drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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++;
		}

include/linux/iio/common/cros_ec_sensors_core.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -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,

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