diff options
| author | Alexandru Tachici <alexandru.tachici@analog.com> | 2022-03-22 13:50:25 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-04-04 11:11:24 +0300 |
| commit | fd5ba89e4cd4fa501ab277c32a623218e11129f4 (patch) | |
| tree | cd5d1a7c09ffd48f94f356031490b23e945e3ee2 /drivers/iio/adc/ad7124.c | |
| parent | fe78ccf79b0e29fd6d8dc2e2c3b0dbeda4ce3ad8 (diff) | |
| download | linux-fd5ba89e4cd4fa501ab277c32a623218e11129f4.tar.xz | |
iio: adc: ad7124: Add update_scan_mode
The callback .set_channel cannot be used to enable and
disable multiple channels at once as they are presented
in the active_scan_mask.
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/20220322105029.86389-3-alexandru.tachici@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 | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c index 3752b2c88959..8e86c6cf87db 100644 --- a/drivers/iio/adc/ad7124.c +++ b/drivers/iio/adc/ad7124.c @@ -669,11 +669,32 @@ static const struct attribute_group ad7124_attrs_group = { .attrs = ad7124_attributes, }; +static int ad7124_update_scan_mode(struct iio_dev *indio_dev, + const unsigned long *scan_mask) +{ + struct ad7124_state *st = iio_priv(indio_dev); + bool bit_set; + int ret; + int i; + + for (i = 0; i < st->num_channels; i++) { + bit_set = test_bit(i, scan_mask); + ret = ad7124_spi_write_mask(st, AD7124_CHANNEL(i), + AD7124_CHANNEL_EN_MSK, + AD7124_CHANNEL_EN(bit_set), + 2); + if (ret < 0) + return ret; + } + return 0; +} + static const struct iio_info ad7124_info = { .read_raw = ad7124_read_raw, .write_raw = ad7124_write_raw, .debugfs_reg_access = &ad7124_reg_access, .validate_trigger = ad_sd_validate_trigger, + .update_scan_mode = ad7124_update_scan_mode, .attrs = &ad7124_attrs_group, }; |