diff options
| author | Dumitru Ceclan <dumitru.ceclan@analog.com> | 2024-06-07 17:53:09 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-06-25 23:04:32 +0300 |
| commit | 98a563de231fcc91d65c6028c7f646fe28faf83a (patch) | |
| tree | a0e824ea0e9cc579c4e2c216c826c17eba0f6b94 /drivers/iio/adc/ad7124.c | |
| parent | 561b5d5b7fbc1475e62ae68309f667ad2e18a669 (diff) | |
| download | linux-98a563de231fcc91d65c6028c7f646fe28faf83a.tar.xz | |
iio: adc: ad_sigma_delta: add disable_one callback
Sigma delta ADCs with a sequencer need to disable the previously enabled
channel when reading using ad_sigma_delta_single_conversion(). This was
done manually in drivers for devices with sequencers.
This patch implements handling of single channel disabling after a
single conversion.
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240607-ad4111-v7-3-97e3855900a0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/adc/ad7124.c')
| -rw-r--r-- | drivers/iio/adc/ad7124.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c index e7b1d517d3de..3beed78496c5 100644 --- a/drivers/iio/adc/ad7124.c +++ b/drivers/iio/adc/ad7124.c @@ -555,10 +555,18 @@ static int ad7124_disable_all(struct ad_sigma_delta *sd) return 0; } +static int ad7124_disable_one(struct ad_sigma_delta *sd, unsigned int chan) +{ + struct ad7124_state *st = container_of(sd, struct ad7124_state, sd); + + return ad7124_spi_write_mask(st, AD7124_CHANNEL(chan), AD7124_CHANNEL_EN_MSK, 0, 2); +} + static const struct ad_sigma_delta_info ad7124_sigma_delta_info = { .set_channel = ad7124_set_channel, .append_status = ad7124_append_status, .disable_all = ad7124_disable_all, + .disable_one = ad7124_disable_one, .set_mode = ad7124_set_mode, .has_registers = true, .addr_shift = 0, @@ -582,12 +590,6 @@ static int ad7124_read_raw(struct iio_dev *indio_dev, if (ret < 0) return ret; - /* After the conversion is performed, disable the channel */ - ret = ad_sd_write_reg(&st->sd, AD7124_CHANNEL(chan->address), 2, - st->channels[chan->address].ain | AD7124_CHANNEL_EN(0)); - if (ret < 0) - return ret; - return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: mutex_lock(&st->cfgs_lock); |