Messages in this thread Patch in this message | | | From | <> | Subject | [PATCH v3 3/6] iio: adc: ad7192: Add update_scan_mode | Date | Tue, 22 Mar 2022 12:50:26 +0200 |
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From: Alexandru Tachici <alexandru.tachici@analog.com>
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> --- drivers/iio/adc/ad7192.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)
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, \ -- 2.25.1
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