diff options
| author | Crt Mori <cmo@melexis.com> | 2020-09-06 23:02:31 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2020-09-13 10:21:37 +0100 |
| commit | dde8ceec9e29fe2abf4fabee7d5a0445d0b75b66 (patch) | |
| tree | 3ec43016cbf6020f42835f486a386ec2cdba87c3 /drivers | |
| parent | d3333e21f2d76fa384200a0826d766285787493f (diff) | |
iio: temperature: mlx90632: Interface to change object ambient temperature
Since object temperature might be different than the sensor temperature
the infrared sensors should provide an interface to inject ambient
temperature. This was in past done via write to ambient temperature
interface (in_temp_ambient_raw), but I think most people did not know
about it. This solution introduces a new iio type of the CALIBAMBIENT
which is hopefully more descriptive and more explicit about the purpose
and capabilities of the sensors.
Signed-off-by: Crt Mori <cmo@melexis.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20200906210231.383976-1-cmo@melexis.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iio/industrialio-core.c | 1 | ||||
| -rw-r--r-- | drivers/iio/temperature/mlx90632.c | 9 |
2 files changed, 8 insertions, 2 deletions
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 59003dc44e60..8ddc6dfc8ed4 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -166,6 +166,7 @@ static const char * const iio_chan_info_postfix[] = { [IIO_CHAN_INFO_CALIBEMISSIVITY] = "calibemissivity", [IIO_CHAN_INFO_OVERSAMPLING_RATIO] = "oversampling_ratio", [IIO_CHAN_INFO_THERMOCOUPLE_TYPE] = "thermocouple_type", + [IIO_CHAN_INFO_CALIBAMBIENT] = "calibambient", }; #if defined(CONFIG_DEBUG_FS) diff --git a/drivers/iio/temperature/mlx90632.c b/drivers/iio/temperature/mlx90632.c index 472a7fb20615..503fe54a0bb9 100644 --- a/drivers/iio/temperature/mlx90632.c +++ b/drivers/iio/temperature/mlx90632.c @@ -761,7 +761,9 @@ static int mlx90632_read_raw(struct iio_dev *indio_dev, *val2 = data->emissivity * 1000; } return IIO_VAL_INT_PLUS_MICRO; - + case IIO_CHAN_INFO_CALIBAMBIENT: + *val = data->object_ambient_temperature; + return IIO_VAL_INT; default: return -EINVAL; } @@ -781,6 +783,9 @@ static int mlx90632_write_raw(struct iio_dev *indio_dev, return -EINVAL; data->emissivity = val * 1000 + val2 / 1000; return 0; + case IIO_CHAN_INFO_CALIBAMBIENT: + data->object_ambient_temperature = val; + return 0; default: return -EINVAL; } @@ -798,7 +803,7 @@ static const struct iio_chan_spec mlx90632_channels[] = { .modified = 1, .channel2 = IIO_MOD_TEMP_OBJECT, .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) | - BIT(IIO_CHAN_INFO_CALIBEMISSIVITY), + BIT(IIO_CHAN_INFO_CALIBEMISSIVITY) | BIT(IIO_CHAN_INFO_CALIBAMBIENT), }, }; |