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..b1bacfe3c3ce 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_HUMIDITYRELATIVE,
+ .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 = 10;
+ 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);
--
2.20.1
