[PATCH libdrm] modetest: Allow the user to specify the plane ID

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Devices can have multiple planes, so allow the user to choose between
them.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 tests/modetest/modetest.c | 28 ++++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/tests/modetest/modetest.c b/tests/modetest/modetest.c
index dedd28621ef8..c390d875e37b 100644
--- a/tests/modetest/modetest.c
+++ b/tests/modetest/modetest.c
@@ -704,6 +704,7 @@ struct pipe_arg {
 };
 
 struct plane_arg {
+	uint32_t plane_id;  /* the id of plane to use */
 	uint32_t crtc_id;  /* the id of CRTC to bind to */
 	bool has_position;
 	int32_t x, y;
@@ -958,7 +959,7 @@ static int set_plane(struct device *dev, struct plane_arg *p)
 {
 	drmModePlane *ovr;
 	uint32_t handles[4] = {0}, pitches[4] = {0}, offsets[4] = {0};
-	uint32_t plane_id = 0;
+	uint32_t plane_id;
 	struct bo *plane_bo;
 	uint32_t plane_flags = 0;
 	int crtc_x, crtc_y, crtc_w, crtc_h;
@@ -982,16 +983,26 @@ static int set_plane(struct device *dev, struct plane_arg *p)
 		return -1;
 	}
 
-	for (i = 0; i < dev->resources->plane_res->count_planes && !plane_id; i++) {
+	plane_id = p->plane_id;
+
+	for (i = 0; i < dev->resources->plane_res->count_planes; i++) {
 		ovr = dev->resources->planes[i].plane;
-		if (!ovr || !format_support(ovr, p->fourcc))
+		if (!ovr)
+			continue;
+
+		if (plane_id && plane_id != ovr->plane_id)
+			continue;
+
+		if (!format_support(ovr, p->fourcc))
 			continue;
 
-		if ((ovr->possible_crtcs & (1 << pipe)) && !ovr->crtc_id)
+		if ((ovr->possible_crtcs & (1 << pipe)) && !ovr->crtc_id) {
 			plane_id = ovr->plane_id;
+			break;
+		}
 	}
 
-	if (!plane_id) {
+	if (i == dev->resources->plane_res->count_planes) {
 		fprintf(stderr, "no unused plane available for CRTC %u\n",
 			crtc->crtc->crtc_id);
 		return -1;
@@ -1359,6 +1370,11 @@ static int parse_plane(struct plane_arg *plane, const char *p)
 {
 	char *end;
 
+	plane->plane_id = strtoul(p, &end, 10);
+	if (*end != '@')
+		return -EINVAL;
+
+	p = end + 1;
 	plane->crtc_id = strtoul(p, &end, 10);
 	if (*end != ':')
 		return -EINVAL;
@@ -1430,7 +1446,7 @@ static void usage(char *name)
 	fprintf(stderr, "\t-p\tlist CRTCs and planes (pipes)\n");
 
 	fprintf(stderr, "\n Test options:\n\n");
-	fprintf(stderr, "\t-P <crtc_id>:<w>x<h>[+<x>+<y>][*<scale>][@<format>]\tset a plane\n");
+	fprintf(stderr, "\t-P <plane_id>@<crtc_id>:<w>x<h>[+<x>+<y>][*<scale>][@<format>]\tset a plane\n");
 	fprintf(stderr, "\t-s <connector_id>[,<connector_id>][@<crtc_id>]:<mode>[-<vrefresh>][@<format>]\tset a mode\n");
 	fprintf(stderr, "\t-C\ttest hw cursor\n");
 	fprintf(stderr, "\t-v\ttest vsynced page flipping\n");
-- 
2.7.4