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staging: iio: sca3000 convert byte order of ring buffer data

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Signed-off-by: Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Manuel Stahl
2010-09-09 17:40:11 +02:00
committed by Greg Kroah-Hartman
parent b68d58a84b
commit 6267ea655f
1 changed files with 13 additions and 1 deletions
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14
drivers/staging/iio/accel/sca3000_ring.c
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@@ -53,7 +53,8 @@ static int sca3000_rip_hw_rb(struct iio_ring_buffer *r,
struct iio_dev *indio_dev = hw_ring->private; struct iio_dev *indio_dev = hw_ring->private;
struct sca3000_state *st = indio_dev->dev_data; struct sca3000_state *st = indio_dev->dev_data;
u8 *rx; u8 *rx;
int ret, num_available, num_read = 0; s16 *samples;
int ret, i, num_available, num_read = 0;
int bytes_per_sample = 1; int bytes_per_sample = 1;
if (st->bpse == 11) if (st->bpse == 11)
@@ -87,6 +88,17 @@ static int sca3000_rip_hw_rb(struct iio_ring_buffer *r,
ret = sca3000_read_data(st, ret = sca3000_read_data(st,
SCA3000_REG_ADDR_RING_OUT, SCA3000_REG_ADDR_RING_OUT,
data, num_read); data, num_read);
/* Convert byte order and shift to default resolution */
if (st->bpse == 11) {
samples = (s16*)(*data+1);
for (i = 0; i < (num_read/2); i++) {
samples[i] = be16_to_cpup(
(__be16 *)&(samples[i]));
samples[i] >>= 3;
}
}
error_ret: error_ret:
mutex_unlock(&st->lock); mutex_unlock(&st->lock);