On Sun, Aug 16, 2020 at 12:15 AM Matt Ranostay
<matt.ranostay@xxxxxxxxxxxx> wrote:
>
> Add support for atlas,hum-ezo / humidity sensor which with scaling
> provides respective data in millipercent
>
> Signed-off-by: Matt Ranostay <matt.ranostay@xxxxxxxxxxxx>
> ---
> drivers/iio/chemical/atlas-ezo-sensor.c | 37 ++++++++++++++++++++++++-
> 1 file changed, 36 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/iio/chemical/atlas-ezo-sensor.c b/drivers/iio/chemical/atlas-ezo-sensor.c
> index 60a0c752fbc5..bb9b36b12a86 100644
> --- a/drivers/iio/chemical/atlas-ezo-sensor.c
> +++ b/drivers/iio/chemical/atlas-ezo-sensor.c
> @@ -17,10 +17,12 @@
>
> #define ATLAS_EZO_DRV_NAME "atlas-ezo-sensor"
> #define ATLAS_INT_TIME_IN_MS 950
> +#define ATLAS_INT_HUM_TIME_IN_MS 350
>
> enum {
> ATLAS_CO2_EZO,
> ATLAS_O2_EZO,
> + ATLAS_HUM_EZO,
> };
>
> struct atlas_ezo_device {
> @@ -63,6 +65,21 @@ static const struct iio_chan_spec atlas_o2_ezo_channels[] = {
> ATLAS_CONCENTRATION_CHANNEL(IIO_MOD_O2),
> };
>
> +static const struct iio_chan_spec atlas_hum_ezo_channels[] = {
> + {
> + .type = IIO_CONCENTRATION,\
*sigh* shouldn't submit these late at night. wrong type :/
Will fix in v2 tomorrow.
- Matt
> + .info_mask_separate =
> + BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
> + .scan_index = 0,
> + .scan_type = {
> + .sign = 'u',
> + .realbits = 32,
> + .storagebits = 32,
> + .endianness = IIO_CPU,
> + },
> + },
> +};
> +
> static struct atlas_ezo_device atlas_ezo_devices[] = {
> [ATLAS_CO2_EZO] = {
> .channels = atlas_co2_ezo_channels,
> @@ -73,7 +90,12 @@ static struct atlas_ezo_device atlas_ezo_devices[] = {
> .channels = atlas_o2_ezo_channels,
> .num_channels = 1,
> .delay = ATLAS_INT_TIME_IN_MS,
> - }
> + },
> + [ATLAS_HUM_EZO] = {
> + .channels = atlas_hum_ezo_channels,
> + .num_channels = 1,
> + .delay = ATLAS_INT_HUM_TIME_IN_MS,
> + },
> };
>
> static void atlas_ezo_sanitize(char *buf)
> @@ -131,6 +153,17 @@ static int atlas_ezo_read_raw(struct iio_dev *indio_dev,
> return ret ? ret : IIO_VAL_INT;
> }
> case IIO_CHAN_INFO_SCALE:
> + switch (chan->type) {
> + case IIO_HUMIDITYRELATIVE:
> + *val = 1000;
> + return IIO_VAL_INT;
> + case IIO_CONCENTRATION:
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + /* IIO_CONCENTRATION modifiers */
> switch (chan->channel2) {
> case IIO_MOD_CO2:
> *val = 0;
> @@ -153,6 +186,7 @@ static const struct iio_info atlas_info = {
> static const struct i2c_device_id atlas_ezo_id[] = {
> { "atlas-co2-ezo", ATLAS_CO2_EZO },
> { "atlas-o2-ezo", ATLAS_O2_EZO },
> + { "atlas-hum-ezo", ATLAS_HUM_EZO },
> {}
> };
> MODULE_DEVICE_TABLE(i2c, atlas_ezo_id);
> @@ -160,6 +194,7 @@ MODULE_DEVICE_TABLE(i2c, atlas_ezo_id);
> static const struct of_device_id atlas_ezo_dt_ids[] = {
> { .compatible = "atlas,co2-ezo", .data = (void *)ATLAS_CO2_EZO, },
> { .compatible = "atlas,o2-ezo", .data = (void *)ATLAS_O2_EZO, },
> + { .compatible = "atlas,hum-ezo", .data = (void *)ATLAS_HUM_EZO, },
> {}
> };
> MODULE_DEVICE_TABLE(of, atlas_ezo_dt_ids);
> --
> 2.27.0
>
