diff options
Diffstat (limited to 'drivers/iio/adc/nau7802.c')
| -rw-r--r-- | drivers/iio/adc/nau7802.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/iio/adc/nau7802.c b/drivers/iio/adc/nau7802.c index e525aa6475c4..db9b829ccf0d 100644 --- a/drivers/iio/adc/nau7802.c +++ b/drivers/iio/adc/nau7802.c @@ -79,10 +79,29 @@ static const struct iio_chan_spec nau7802_chan_array[] = { static const u16 nau7802_sample_freq_avail[] = {10, 20, 40, 80, 10, 10, 10, 320}; +static ssize_t nau7802_show_scales(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct nau7802_state *st = iio_priv(dev_to_iio_dev(dev)); + int i, len = 0; + + for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++) + len += scnprintf(buf + len, PAGE_SIZE - len, "0.%09d ", + st->scale_avail[i]); + + buf[len-1] = '\n'; + + return len; +} + static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("10 40 80 320"); +static IIO_DEVICE_ATTR(in_voltage_scale_available, S_IRUGO, nau7802_show_scales, + NULL, 0); + static struct attribute *nau7802_attributes[] = { &iio_const_attr_sampling_frequency_available.dev_attr.attr, + &iio_dev_attr_in_voltage_scale_available.dev_attr.attr, NULL }; @@ -414,6 +433,7 @@ static int nau7802_probe(struct i2c_client *client, i2c_set_clientdata(client, indio_dev); indio_dev->dev.parent = &client->dev; + indio_dev->dev.of_node = client->dev.of_node; indio_dev->name = dev_name(&client->dev); indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &nau7802_info; |