Commit 4766897a authored by Matt Ranostay's avatar Matt Ranostay Committed by Jonathan Cameron

iio: chemical: atlas-sensor: add helper function atlas_buffer_num_channels()

Add helper function to detect the number of channels to output
in trigger handler. This is based on IIO_TIMESTAMP channel being the
delimiter between input and output channels.
Signed-off-by: default avatarMatt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent f335fa70
...@@ -86,6 +86,16 @@ static const struct regmap_config atlas_regmap_config = { ...@@ -86,6 +86,16 @@ static const struct regmap_config atlas_regmap_config = {
.val_bits = 8, .val_bits = 8,
}; };
static int atlas_buffer_num_channels(const struct iio_chan_spec *spec)
{
int idx = 0;
for (; spec->type != IIO_TIMESTAMP; spec++)
idx++;
return idx;
};
static const struct iio_chan_spec atlas_ph_channels[] = { static const struct iio_chan_spec atlas_ph_channels[] = {
{ {
.type = IIO_PH, .type = IIO_PH,
...@@ -354,11 +364,12 @@ static irqreturn_t atlas_trigger_handler(int irq, void *private) ...@@ -354,11 +364,12 @@ static irqreturn_t atlas_trigger_handler(int irq, void *private)
struct iio_poll_func *pf = private; struct iio_poll_func *pf = private;
struct iio_dev *indio_dev = pf->indio_dev; struct iio_dev *indio_dev = pf->indio_dev;
struct atlas_data *data = iio_priv(indio_dev); struct atlas_data *data = iio_priv(indio_dev);
int channels = atlas_buffer_num_channels(data->chip->channels);
int ret; int ret;
ret = regmap_bulk_read(data->regmap, data->chip->data_reg, ret = regmap_bulk_read(data->regmap, data->chip->data_reg,
(u8 *) &data->buffer, (u8 *) &data->buffer,
sizeof(__be32) * (data->chip->num_channels - 2)); sizeof(__be32) * channels);
if (!ret) if (!ret)
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
......
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