diff options
| author | Nuno Sa <nuno.sa@analog.com> | 2023-12-07 13:39:27 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-25 14:52:51 -0800 |
| commit | 08715e4fa58e6917e57e1229bf384a310d679b1d (patch) | |
| tree | 6ede4562d0b87a6b6a81948430196ef4db928813 /include/linux | |
| parent | d7773702f81332a5d4aed6b03b0ffac63703f277 (diff) | |
iio: adc: ad9467: fix scale setting
[ Upstream commit b73f08bb7fe5a0901646ca5ceaa1e7a2d5ee6293 ]
When reading in_voltage_scale we can get something like:
root@analog:/sys/bus/iio/devices/iio:device2# cat in_voltage_scale
0.038146
However, when reading the available options:
root@analog:/sys/bus/iio/devices/iio:device2# cat
in_voltage_scale_available
2000.000000 2100.000006 2200.000007 2300.000008 2400.000009 2500.000010
which does not make sense. Moreover, when trying to set a new scale we
get an error because there's no call to __ad9467_get_scale() to give us
values as given when reading in_voltage_scale. Fix it by computing the
available scales during probe and properly pass the list when
.read_available() is called.
While at it, change to use .read_available() from iio_info. Also note
that to properly fix this, adi-axi-adc.c has to be changed accordingly.
Fixes: ad6797120238 ("iio: adc: ad9467: add support AD9467 ADC")
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20231207-iio-backend-prep-v2-4-a4a33bc4d70e@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/iio/adc/adi-axi-adc.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/iio/adc/adi-axi-adc.h b/include/linux/iio/adc/adi-axi-adc.h index 52620e5b8052..b7904992d561 100644 --- a/include/linux/iio/adc/adi-axi-adc.h +++ b/include/linux/iio/adc/adi-axi-adc.h @@ -41,6 +41,7 @@ struct adi_axi_adc_chip_info { * @reg_access IIO debugfs_reg_access hook for the client ADC * @read_raw IIO read_raw hook for the client ADC * @write_raw IIO write_raw hook for the client ADC + * @read_avail IIO read_avail hook for the client ADC */ struct adi_axi_adc_conv { const struct adi_axi_adc_chip_info *chip_info; @@ -54,6 +55,9 @@ struct adi_axi_adc_conv { int (*write_raw)(struct adi_axi_adc_conv *conv, struct iio_chan_spec const *chan, int val, int val2, long mask); + int (*read_avail)(struct adi_axi_adc_conv *conv, + struct iio_chan_spec const *chan, + const int **val, int *type, int *length, long mask); }; struct adi_axi_adc_conv *devm_adi_axi_adc_conv_register(struct device *dev, |