[media] sur40: lower poll interval to fix occasional FPS drops to ~56 FPS

The framerate sometimes drops below 60 Hz if the poll interval is too high.
Lowering it to the minimum of 1 ms fixes this.

Signed-off-by: Martin Kaltenbrunner <[email protected]>
Signed-off-by: Florian Echtler <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Cc: <[email protected]>      # for v4.2 and up
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
index f124f3af0de1638925180026a3ce6986469bcbcc..bff525f26e87333c73279d513f0602bfed45b43c 100644 (file)
--- a/drivers/input/touchscreen/sur40.c
+++ b/drivers/input/touchscreen/sur40.c
@@ -126,7 +126,7 @@ struct sur40_image_header {
 #define VIDEO_PACKET_SIZE  16384
 
 /* polling interval (ms) */
-#define POLL_INTERVAL 4
+#define POLL_INTERVAL 1
 
 /* maximum number of contacts FIXME: this is a guess? */
 #define MAX_CONTACTS 64