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iio: imu: inv_mpu6050: temperature only work with accel/gyro

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Temperature sensor works correctly only when accel and/or gyro
is turned on. Prevent polling value if they are not running.
Anyway it doesn't make sense to use it without sensor engines
on.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Jean-Baptiste Maneyrol 2020-02-19 15:39:58 +01:00 committed by Jonathan Cameron
parent 4599cac846
commit 74a40e19f9
1 changed files with 5 additions and 0 deletions
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5
drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
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@ -598,6 +598,11 @@ static int inv_mpu6050_read_channel_data(struct iio_dev *indio_dev,
chan->channel2, val);
break;
case IIO_TEMP:
/* temperature sensor work only with accel and/or gyro */
if (!st->chip_config.accl_en && !st->chip_config.gyro_en) {
result = -EBUSY;
goto error_power_off;
}
if (!st->chip_config.temp_en) {
result = inv_mpu6050_switch_engine(st, true,
INV_MPU6050_SENSOR_TEMP);