[yavta PATCH 1/1] cache maintenance skip feature

[Sakari Ailus <sakari.ailus@linux.intel.com>]

From: Samu Onkalo <samu.onkalo@intel.com>

Add options to skip cache maintenance.
--dqbuf-skip-cache
--qbuf-skip-cache

Signed-off-by: Samu Onkalo <samu.onkalo@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
This patch depends on my earlier patch "Fix --data-prefix option
documentation".

 yavta.c |   16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/yavta.c b/yavta.c
index b21c3b3..ec4acd6 100644
--- a/yavta.c
+++ b/yavta.c
@@ -73,6 +73,8 @@ struct device
 	unsigned int width;
 	unsigned int height;
 	uint32_t buffer_output_flags;
+	uint32_t buffer_qbuf_flags;
+	uint32_t buffer_dqbuf_flags;
 	uint32_t timestamp_type;
 
 	unsigned char num_planes;
@@ -1010,6 +1012,8 @@ static int video_queue_buffer(struct device *dev, int index, enum buffer_fill_mo
 		}
 	}
 
+	buf.flags |= dev->buffer_qbuf_flags;
+
 	if (video_is_mplane(dev)) {
 		buf.m.planes = planes;
 		buf.length = dev->num_planes;
@@ -1662,6 +1666,7 @@ static int video_do_capture(struct device *dev, unsigned int nframes,
 		buf.memory = dev->memtype;
 		buf.length = VIDEO_MAX_PLANES;
 		buf.m.planes = planes;
+		buf.flags = dev->buffer_dqbuf_flags;
 
 		ret = ioctl(dev->fd, VIDIOC_DQBUF, &buf);
 		if (ret < 0) {
@@ -1781,6 +1786,7 @@ static void usage(const char *argv0)
 	printf("-u, --userptr			Use the user pointers streaming method\n");
 	printf("-w, --set-control 'ctrl value'	Set control 'ctrl' to 'value'\n");
 	printf("    --data-prefix		Write portions of buffer data before data_offset\n");
+	printf("    --[d]qbuf-skip-cache        Skip cache maintenance\n");
 	printf("    --buffer-size		Buffer size in bytes\n");
 	printf("    --enum-formats		Enumerate formats\n");
 	printf("    --enum-inputs		Enumerate inputs\n");
@@ -1814,6 +1820,8 @@ static void usage(const char *argv0)
 #define OPT_PREMULTIPLIED	269
 #define OPT_QUEUE_LATE		270
 #define OPT_DATA_PREFIX		271
+#define OPT_DQBUF_NO_CACHE      272
+#define OPT_QBUF_NO_CACHE	273
 
 static struct option opts[] = {
 	{"buffer-size", 1, 0, OPT_BUFFER_SIZE},
@@ -1822,6 +1830,7 @@ static struct option opts[] = {
 	{"check-overrun", 0, 0, 'C'},
 	{"data-prefix", 0, 0, OPT_DATA_PREFIX},
 	{"delay", 1, 0, 'd'},
+	{"dqbuf-skip-cache", 0, 0, OPT_DQBUF_NO_CACHE},
 	{"enum-formats", 0, 0, OPT_ENUM_FORMATS},
 	{"enum-inputs", 0, 0, OPT_ENUM_INPUTS},
 	{"fd", 1, 0, OPT_FD},
@@ -1838,6 +1847,7 @@ static struct option opts[] = {
 	{"offset", 1, 0, OPT_USERPTR_OFFSET},
 	{"pause", 0, 0, 'p'},
 	{"premultiplied", 0, 0, OPT_PREMULTIPLIED},
+	{"qbuf-skip-cache", 0, 0, OPT_QBUF_NO_CACHE},
 	{"quality", 1, 0, 'q'},
 	{"queue-late", 0, 0, OPT_QUEUE_LATE},
 	{"get-control", 1, 0, 'r'},
@@ -2089,6 +2099,12 @@ int main(int argc, char *argv[])
 		case OPT_DATA_PREFIX:
 			dev.write_data_prefix = true;
 			break;
+		case OPT_DQBUF_NO_CACHE:
+			dev.buffer_dqbuf_flags |= V4L2_BUF_FLAG_NO_CACHE_INVALIDATE;
+			break;
+		case OPT_QBUF_NO_CACHE:
+			dev.buffer_qbuf_flags |= V4L2_BUF_FLAG_NO_CACHE_INVALIDATE;
+			break;
 		default:
 			printf("Invalid option -%c\n", c);
 			printf("Run %s -h for help.\n", argv[0]);
-- 
1.7.9.5