On 02/24/11 19:09, michael.hennerich@xxxxxxxxxx wrote: > From: Michael Hennerich <michael.hennerich@xxxxxxxxxx> > > Add timestamp attributes. > Revise timestamp handling accordingly. > Preset timestamp generation. > > Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx> Acked-by: Jonathan Cameron <jic23@xxxxxxxxx> > --- > drivers/staging/iio/adc/ad7606_ring.c | 22 ++++++++++++++++++---- > 1 files changed, 18 insertions(+), 4 deletions(-) > > diff --git a/drivers/staging/iio/adc/ad7606_ring.c b/drivers/staging/iio/adc/ad7606_ring.c > index 9889680..b32cb0d 100644 > --- a/drivers/staging/iio/adc/ad7606_ring.c > +++ b/drivers/staging/iio/adc/ad7606_ring.c > @@ -30,6 +30,9 @@ static IIO_SCAN_EL_C(in5, 5, 0, NULL); > static IIO_SCAN_EL_C(in6, 6, 0, NULL); > static IIO_SCAN_EL_C(in7, 7, 0, NULL); > > +static IIO_SCAN_EL_TIMESTAMP(8); > +static IIO_CONST_ATTR_SCAN_EL_TYPE(timestamp, s, 64, 64); > + > static ssize_t ad7606_show_type(struct device *dev, > struct device_attribute *attr, > char *buf) > @@ -60,6 +63,9 @@ static struct attribute *ad7606_scan_el_attrs[] = { > &iio_const_attr_in6_index.dev_attr.attr, > &iio_scan_el_in7.dev_attr.attr, > &iio_const_attr_in7_index.dev_attr.attr, > + &iio_const_attr_timestamp_index.dev_attr.attr, > + &iio_scan_el_timestamp.dev_attr.attr, > + &iio_const_attr_timestamp_type.dev_attr.attr, > &iio_dev_attr_in_type.dev_attr.attr, > NULL, > }; > @@ -133,10 +139,14 @@ static int ad7606_ring_preenable(struct iio_dev *indio_dev) > size_t d_size; > > d_size = st->chip_info->num_channels * > - st->chip_info->bits / 8 + sizeof(s64); > + st->chip_info->bits / 8; > + > + if (ring->scan_timestamp) { > + d_size += sizeof(s64); > > - if (d_size % sizeof(s64)) > - d_size += sizeof(s64) - (d_size % sizeof(s64)); > + if (d_size % sizeof(s64)) > + d_size += sizeof(s64) - (d_size % sizeof(s64)); > + } > > if (ring->access.set_bytes_per_datum) > ring->access.set_bytes_per_datum(ring, d_size); > @@ -210,7 +220,10 @@ static void ad7606_poll_bh_to_ring(struct work_struct *work_s) > } > > time_ns = iio_get_time_ns(); > - memcpy(buf + st->d_size - sizeof(s64), &time_ns, sizeof(time_ns)); > + > + if (ring->scan_timestamp) > + memcpy(buf + st->d_size - sizeof(s64), > + &time_ns, sizeof(time_ns)); > > ring->access.store_to(&sw_ring->buf, buf, time_ns); > done: > @@ -242,6 +255,7 @@ int ad7606_register_ring_funcs_and_init(struct iio_dev *indio_dev) > indio_dev->ring->postenable = &iio_triggered_ring_postenable; > indio_dev->ring->predisable = &iio_triggered_ring_predisable; > indio_dev->ring->scan_el_attrs = &ad7606_scan_el_group; > + indio_dev->ring->scan_timestamp = true ; > > INIT_WORK(&st->poll_work, &ad7606_poll_bh_to_ring); > -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html