[PATCH 06/12] lib/igt_kms: Add support for the IN_FENCE_FD property

[Gustavo Padovan]

From: Robert Foss <robert.foss at collabora.com>

Add support dor the IN_FENCE_FD property to enable setting in fences for atomic
commits.

Signed-off-by: Robert Foss <robert.foss at collabora.com>
---
 lib/igt_kms.c | 20 ++++++++++++++++++++
 lib/igt_kms.h |  5 +++++
 2 files changed, 25 insertions(+)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 8aaff5b..4748c0a 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -164,6 +164,7 @@ const char *igt_plane_prop_names[IGT_NUM_PLANE_PROPS] = {
 	"CRTC_H",
 	"FB_ID",
 	"CRTC_ID",
+	"IN_FENCE_FD",
 	"type",
 	"rotation"
 };
@@ -1426,6 +1427,7 @@ void igt_display_init(igt_display_t *display, int drm_fd)
 			n_planes++;
 			plane->pipe = pipe;
 			plane->drm_plane = drm_plane;
+			plane->fence_fd = -1;
 
 			if (is_atomic == 0) {
 				display->is_atomic = 1;
@@ -1712,6 +1714,11 @@ igt_atomic_prepare_plane_commit(igt_plane_t *plane, igt_pipe_t *pipe,
 	    plane->index,
 	    fb_id);
 
+	if (plane->fence_fd >= 0) {
+		uint32_t fence_fd = plane->fence_fd;
+		igt_atomic_populate_plane_req(req, plane, IGT_PLANE_IN_FENCE_FD, fence_fd);
+	}
+
 	if (plane->fb_changed) {
 		igt_atomic_populate_plane_req(req, plane, IGT_PLANE_CRTC_ID, fb_id ? crtc_id : 0);
 		igt_atomic_populate_plane_req(req, plane, IGT_PLANE_FB_ID, fb_id);
@@ -2522,6 +2529,19 @@ void igt_plane_set_fb(igt_plane_t *plane, struct igt_fb *fb)
 	plane->size_changed = true;
 }
 
+/**
+ * igt_plane_set_fence_fd:
+ * @plane: plane
+ * @fence_fd: fence fd, disable fence_fd by setting it to 0
+ *
+ * This function sets a fence fd to enable a commit to wait for some event to
+ * occur before completing.
+ */
+void igt_plane_set_fence_fd(igt_plane_t *plane, uint32_t fence_fd)
+{
+	plane->fence_fd = fence_fd;
+}
+
 void igt_plane_set_position(igt_plane_t *plane, int x, int y)
 {
 	igt_pipe_t *pipe = plane->pipe;
diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index ae2b505..344f931 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -213,6 +213,7 @@ enum igt_atomic_plane_properties {
 
        IGT_PLANE_FB_ID,
        IGT_PLANE_CRTC_ID,
+       IGT_PLANE_IN_FENCE_FD,
        IGT_PLANE_TYPE,
        IGT_PLANE_ROTATION,
        IGT_NUM_PLANE_PROPS
@@ -266,6 +267,9 @@ typedef struct {
 	uint32_t src_h;
 
 	igt_rotation_t rotation;
+
+	/* in fence fd */
+	int32_t fence_fd;
 	uint32_t atomic_props_plane[IGT_NUM_PLANE_PROPS];
 } igt_plane_t;
 
@@ -349,6 +353,7 @@ void igt_pipe_set_ctm_matrix(igt_pipe_t *pipe, void *ptr, size_t length);
 void igt_pipe_set_gamma_lut(igt_pipe_t *pipe, void *ptr, size_t length);
 
 void igt_plane_set_fb(igt_plane_t *plane, struct igt_fb *fb);
+void igt_plane_set_fence_fd(igt_plane_t *plane, uint32_t fence_fd);
 void igt_plane_set_position(igt_plane_t *plane, int x, int y);
 void igt_plane_set_size(igt_plane_t *plane, int w, int h);
 void igt_plane_set_rotation(igt_plane_t *plane, igt_rotation_t rotation);
-- 
2.5.5