diff options
Diffstat (limited to 'drivers/iio/adc/qcom-spmi-vadc.c')
| -rw-r--r-- | drivers/iio/adc/qcom-spmi-vadc.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/iio/adc/qcom-spmi-vadc.c b/drivers/iio/adc/qcom-spmi-vadc.c index bcff0f62b70e..f5c6f1f27b2c 100644 --- a/drivers/iio/adc/qcom-spmi-vadc.c +++ b/drivers/iio/adc/qcom-spmi-vadc.c @@ -84,6 +84,7 @@ * that is an average of multiple measurements. * @scale_fn_type: Represents the scaling function to convert voltage * physical units desired by the client for the channel. + * @channel_name: Channel name used in device tree. */ struct vadc_channel_prop { unsigned int channel; @@ -93,6 +94,7 @@ struct vadc_channel_prop { unsigned int hw_settle_time; unsigned int avg_samples; enum vadc_scale_fn_type scale_fn_type; + const char *channel_name; }; /** @@ -495,8 +497,18 @@ static int vadc_fwnode_xlate(struct iio_dev *indio_dev, return -EINVAL; } +static int vadc_read_label(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, char *label) +{ + struct vadc_priv *vadc = iio_priv(indio_dev); + const char *name = vadc->chan_props[chan->address].channel_name; + + return sysfs_emit(label, "%s\n", name); +} + static const struct iio_info vadc_info = { .read_raw = vadc_read_raw, + .read_label = vadc_read_label, .fwnode_xlate = vadc_fwnode_xlate, }; @@ -652,7 +664,7 @@ static int vadc_get_fw_channel_data(struct device *dev, struct vadc_channel_prop *prop, struct fwnode_handle *fwnode) { - const char *name = fwnode_get_name(fwnode); + const char *name = fwnode_get_name(fwnode), *label; u32 chan, value, varr[2]; int ret; @@ -667,6 +679,11 @@ static int vadc_get_fw_channel_data(struct device *dev, return -EINVAL; } + ret = fwnode_property_read_string(fwnode, "label", &label); + if (ret) + label = vadc_chans[chan].datasheet_name; + prop->channel_name = label; + /* the channel has DT description */ prop->channel = chan; |