staging:iio: Add caching of scan_timestamp to the core as well as buffers.

This will be needed when multiple buffer support is added.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

8 files changed, 10 insertions, 12 deletions

diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c
index 25ef3c3..5d31685 100644
--- a/drivers/staging/iio/adc/ad7192.c
+++ b/drivers/staging/iio/adc/ad7192.c
@@ -521,7 +521,7 @@ static irqreturn_t ad7192_trigger_handler(int irq, void *p)
 				  indio_dev->channels[0].scan_type.realbits/8);
 
 	/* Guaranteed to be aligned with 8 byte boundary */
-	if (ring->scan_timestamp)
+	if (indio_dev->scan_timestamp)
 		dat64[1] = pf->timestamp;
 
 	ring->access->store_to(ring, (u8 *)dat64, pf->timestamp);
diff --git a/drivers/staging/iio/adc/ad7298_ring.c b/drivers/staging/iio/adc/ad7298_ring.c
index 5c13690..538e3b3 100644
--- a/drivers/staging/iio/adc/ad7298_ring.c
+++ b/drivers/staging/iio/adc/ad7298_ring.c
@@ -92,7 +92,7 @@ static irqreturn_t ad7298_trigger_handler(int irq, void *p)
 	if (b_sent)
 		return b_sent;
 
-	if (ring->scan_timestamp) {
+	if (indio_dev->scan_timestamp) {
 		time_ns = iio_get_time_ns();
 		memcpy((u8 *)buf + indio_dev->scan_bytes - sizeof(s64),
 			&time_ns, sizeof(time_ns));
diff --git a/drivers/staging/iio/adc/ad7476_ring.c b/drivers/staging/iio/adc/ad7476_ring.c
index a090bc3..8534f6b 100644
--- a/drivers/staging/iio/adc/ad7476_ring.c
+++ b/drivers/staging/iio/adc/ad7476_ring.c
@@ -40,7 +40,7 @@ static irqreturn_t ad7476_trigger_handler(int irq, void  *p)
 
 	time_ns = iio_get_time_ns();
 
-	if (indio_dev->buffer->scan_timestamp)
+	if (indio_dev->scan_timestamp)
 		memcpy(rxbuf + indio_dev->scan_bytes - sizeof(s64),
 			&time_ns, sizeof(time_ns));
 
diff --git a/drivers/staging/iio/adc/ad7606_ring.c b/drivers/staging/iio/adc/ad7606_ring.c
index 6cbf242..007b600 100644
--- a/drivers/staging/iio/adc/ad7606_ring.c
+++ b/drivers/staging/iio/adc/ad7606_ring.c
@@ -81,9 +81,8 @@ static void ad7606_poll_bh_to_ring(struct work_struct *work_s)
 
 	time_ns = iio_get_time_ns();
 
-	if (ring->scan_timestamp)
-		*((s64 *)(buf + ring->access->get_bytes_per_datum(ring) -
-			  sizeof(s64))) = time_ns;
+	if (indio_dev->scan_timestamp)
+		*((s64 *)(buf + indio_dev->scan_bytes - sizeof(s64))) = time_ns;
 
 	ring->access->store_to(indio_dev->buffer, buf, time_ns);
 done:
diff --git a/drivers/staging/iio/adc/ad7793.c b/drivers/staging/iio/adc/ad7793.c
index 2aeeaa2..7f68c7c 100644
--- a/drivers/staging/iio/adc/ad7793.c
+++ b/drivers/staging/iio/adc/ad7793.c
@@ -386,7 +386,7 @@ static irqreturn_t ad7793_trigger_handler(int irq, void *p)
 				  indio_dev->channels[0].scan_type.realbits/8);
 
 	/* Guaranteed to be aligned with 8 byte boundary */
-	if (ring->scan_timestamp)
+	if (indio_dev->scan_timestamp)
 		dat64[1] = pf->timestamp;
 
 	ring->access->store_to(ring, (u8 *)dat64, pf->timestamp);
diff --git a/drivers/staging/iio/adc/ad7887_ring.c b/drivers/staging/iio/adc/ad7887_ring.c
index 442994e..62681a8 100644
--- a/drivers/staging/iio/adc/ad7887_ring.c
+++ b/drivers/staging/iio/adc/ad7887_ring.c
@@ -72,7 +72,6 @@ static irqreturn_t ad7887_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct ad7887_state *st = iio_priv(indio_dev);
-	struct iio_buffer *ring = indio_dev->buffer;
 	s64 time_ns;
 	__u8 *buf;
 	int b_sent;
@@ -92,7 +91,7 @@ static irqreturn_t ad7887_trigger_handler(int irq, void *p)
 	time_ns = iio_get_time_ns();
 
 	memcpy(buf, st->data, bytes);
-	if (ring->scan_timestamp)
+	if (indio_dev->scan_timestamp)
 		memcpy(buf + indio_dev->scan_bytes - sizeof(s64),
 		       &time_ns, sizeof(time_ns));
 
diff --git a/drivers/staging/iio/adc/ad799x_ring.c b/drivers/staging/iio/adc/ad799x_ring.c
index dfdbf92..5190e50 100644
--- a/drivers/staging/iio/adc/ad799x_ring.c
+++ b/drivers/staging/iio/adc/ad799x_ring.c
@@ -95,7 +95,7 @@ static irqreturn_t ad799x_trigger_handler(int irq, void *p)
 
 	time_ns = iio_get_time_ns();
 
-	if (ring->scan_timestamp)
+	if (indio_dev->scan_timestamp)
 		memcpy(rxbuf + indio_dev->scan_bytes - sizeof(s64),
 			&time_ns, sizeof(time_ns));
 
diff --git a/drivers/staging/iio/adc/max1363_ring.c b/drivers/staging/iio/adc/max1363_ring.c
index d0a60a3..8372e98 100644
--- a/drivers/staging/iio/adc/max1363_ring.c
+++ b/drivers/staging/iio/adc/max1363_ring.c
@@ -54,7 +54,7 @@ static irqreturn_t max1363_trigger_handler(int irq, void *p)
 		d_size = numvals*2;
 	else
 		d_size = numvals;
-	if (indio_dev->buffer->scan_timestamp) {
+	if (indio_dev->scan_timestamp) {
 		d_size += sizeof(s64);
 		if (d_size % sizeof(s64))
 			d_size += sizeof(s64) - (d_size % sizeof(s64));
@@ -78,7 +78,7 @@ static irqreturn_t max1363_trigger_handler(int irq, void *p)
 
 	time_ns = iio_get_time_ns();
 
-	if (indio_dev->buffer->scan_timestamp)
+	if (indio_dev->scan_timestamp)
 		memcpy(rxbuf + d_size - sizeof(s64), &time_ns, sizeof(time_ns));
 	iio_push_to_buffer(indio_dev->buffer, rxbuf, time_ns);