diff options
| author | Alexandru Tachici <alexandru.tachici@analog.com> | 2022-03-22 13:50:26 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-04-04 11:11:25 +0300 |
| commit | fe7d929a63c3a0b7908ae5d7b9fdf456acd66a43 (patch) | |
| tree | 9b0bca6853c8b51f71d15d7581a55574acce0a43 /drivers | |
| parent | fd5ba89e4cd4fa501ab277c32a623218e11129f4 (diff) | |
| download | linux-fe7d929a63c3a0b7908ae5d7b9fdf456acd66a43.tar.xz | |
iio: adc: ad7192: Add update_scan_mode
The callback .set_channel cannot be used to enable multiple
channels at once, only one is allowed simultaneously.
By adding an update_scan_mode callback, every time the
continuous mode is activated, channels will be enabled/disabled
accordingly.
Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Link: https://lore.kernel.org/r/20220322105029.86389-4-alexandru.tachici@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iio/adc/ad7192.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c index 770b4e59238f..4c004af4749f 100644 --- a/drivers/iio/adc/ad7192.c +++ b/drivers/iio/adc/ad7192.c @@ -783,6 +783,26 @@ static int ad7192_read_avail(struct iio_dev *indio_dev, return -EINVAL; } +static int ad7192_update_scan_mode(struct iio_dev *indio_dev, const unsigned long *scan_mask) +{ + struct ad7192_state *st = iio_priv(indio_dev); + u32 conf = st->conf; + int ret; + int i; + + conf &= ~AD7192_CONF_CHAN_MASK; + for_each_set_bit(i, scan_mask, 8) + conf |= AD7192_CONF_CHAN(i); + + ret = ad_sd_write_reg(&st->sd, AD7192_REG_CONF, 3, conf); + if (ret < 0) + return ret; + + st->conf = conf; + + return 0; +} + static const struct iio_info ad7192_info = { .read_raw = ad7192_read_raw, .write_raw = ad7192_write_raw, @@ -790,6 +810,7 @@ static const struct iio_info ad7192_info = { .read_avail = ad7192_read_avail, .attrs = &ad7192_attribute_group, .validate_trigger = ad_sd_validate_trigger, + .update_scan_mode = ad7192_update_scan_mode, }; static const struct iio_info ad7195_info = { @@ -799,6 +820,7 @@ static const struct iio_info ad7195_info = { .read_avail = ad7192_read_avail, .attrs = &ad7195_attribute_group, .validate_trigger = ad_sd_validate_trigger, + .update_scan_mode = ad7192_update_scan_mode, }; #define __AD719x_CHANNEL(_si, _channel1, _channel2, _address, _extend_name, \ |