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staging:iio:ade7758: Use iio_validate_scan_mask_onehot 

Only one of the channels of the ade7758 may be sampled at a time. Use the new
validate_scan_mask callback and the iio_validate_scan_mask_onehot function to
implement this restriction. Previously this was implemented using
available_scan_masks, but this requires a individual scan mask for each channel.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Lars-Peter Clausen 2012-07-09 10:00:00 +01:00 committed by Jonathan Cameron
parent 8c2c6ba6aa
commit ee0312a05d
3 changed files with 2 additions and 7 deletions
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1
drivers/staging/iio/meter/ade7758.h
View File

@ -122,7 +122,6 @@ struct ade7758_state {
u8 *tx;
u8 *rx;
struct mutex buf_lock;
unsigned long available_scan_masks[AD7758_NUM_WAVESRC];
struct iio_chan_spec *ade7758_ring_channels;
struct spi_transfer ring_xfer[4];
struct spi_message ring_msg;

7
drivers/staging/iio/meter/ade7758_core.c
View File

@ -883,7 +883,7 @@ static const struct iio_info ade7758_info = {
static int __devinit ade7758_probe(struct spi_device *spi)
{
int i, ret;
int ret;
struct ade7758_state *st;
struct iio_dev *indio_dev = iio_device_alloc(sizeof(*st));
@ -916,11 +916,6 @@ static int __devinit ade7758_probe(struct spi_device *spi)
indio_dev->info = &ade7758_info;
indio_dev->modes = INDIO_DIRECT_MODE;
for (i = 0; i < AD7758_NUM_WAVESRC; i++)
set_bit(i, &st->available_scan_masks[i]);
indio_dev->available_scan_masks = st->available_scan_masks;
ret = ade7758_configure_ring(indio_dev);
if (ret)
goto error_free_tx;

1
drivers/staging/iio/meter/ade7758_ring.c
View File

@ -114,6 +114,7 @@ static const struct iio_buffer_setup_ops ade7758_ring_setup_ops = {
.preenable = &ade7758_ring_preenable,
.postenable = &iio_triggered_buffer_postenable,
.predisable = &iio_triggered_buffer_predisable,
.validate_scan_mask = &iio_validate_scan_mask_onehot,
};
void ade7758_unconfigure_ring(struct iio_dev *indio_dev)