@@ -25,6 +25,11 @@ struct adc084s021 {
struct spi_transfer spi_trans;
struct regulator *reg;
struct mutex lock;
+ /* Buffer used to align data */
+ struct {
+ __be16 channels[4];
+ s64 ts;
+ } scan;
/*
* DMA (thus cache coherency maintenance) requires the
* transfer buffers to live in their own cache line.
@@ -140,14 +145,13 @@ static irqreturn_t adc084s021_buffer_trigger_handler(int irq, void *pollfunc)
struct iio_poll_func *pf = pollfunc;
struct iio_dev *indio_dev = pf->indio_dev;
struct adc084s021 *adc = iio_priv(indio_dev);
- __be16 data[8] = {0}; /* 4 * 16-bit words of data + 8 bytes timestamp */
mutex_lock(&adc->lock);
- if (adc084s021_adc_conversion(adc, &data) < 0)
+ if (adc084s021_adc_conversion(adc, adc->scan.channels) < 0)
dev_err(&adc->spi->dev, "Failed to read data\n");
- iio_push_to_buffers_with_timestamp(indio_dev, data,
+ iio_push_to_buffers_with_timestamp(indio_dev, &adc->scan,
iio_get_time_ns(indio_dev));
mutex_unlock(&adc->lock);
iio_trigger_notify_done(indio_dev->trig);