[PATCH 7/8] lib: Add igt_wait_for_vblank() helper

[Damien Lespiau <damien.lespiau@xxxxxxxxx>]

Signed-off-by: Damien Lespiau <damien.lespiau@xxxxxxxxx>
---
 lib/Makefile.am                      |  1 +
 lib/{igt_display.h => igt_display.c} | 38 ++++++++++++------------------------
 lib/igt_display.h                    |  2 ++
 3 files changed, 15 insertions(+), 26 deletions(-)
 copy lib/{igt_display.h => igt_display.c} (68%)

diff --git a/lib/Makefile.am b/lib/Makefile.am
index 06d406f..431fd93 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -13,6 +13,7 @@ libintel_tools_la_SOURCES = 	\
 	i915_reg.h		\
 	igt_debugfs.c		\
 	igt_debugfs.h		\
+	igt_display.c		\
 	igt_display.h		\
 	instdone.c		\
 	instdone.h		\
diff --git a/lib/igt_display.h b/lib/igt_display.c
similarity index 68%
copy from lib/igt_display.h
copy to lib/igt_display.c
index 22c8a9f..28e21e6 100644
--- a/lib/igt_display.h
+++ b/lib/igt_display.c
@@ -22,34 +22,20 @@
  *
  */
 
-#ifndef __IGT_DISPLAY_H__
-#define __IGT_DISPLAY_H__
+#include <string.h>
 
-enum pipe {
-        PIPE_A = 0,
-        PIPE_B,
-        PIPE_C,
-        I915_MAX_PIPES
-};
-#define pipe_name(p) ((p) + 'A')
+#include "drmtest.h"
+#include "igt_display.h"
 
-enum plane {
-        PLANE_A = 0,
-        PLANE_B,
-        PLANE_C,
-};
-#define plane_name(p) ((p) + 'A')
+void igt_wait_for_vblank(int drm_fd, enum pipe pipe)
+{
+	drmVBlank wait_vbl;
 
-#define sprite_name(p, s) ((p) * dev_priv->num_plane + (s) + 'A')
+	memset(&wait_vbl, 0, sizeof(wait_vbl));
 
-enum port {
-        PORT_A = 0,
-        PORT_B,
-        PORT_C,
-        PORT_D,
-        PORT_E,
-        I915_MAX_PORTS
-};
-#define port_name(p) ((p) + 'A')
+	wait_vbl.request.type = pipe << DRM_VBLANK_HIGH_CRTC_SHIFT |
+				DRM_VBLANK_RELATIVE;
+	wait_vbl.request.sequence = 1;
 
-#endif /* __IGT_DISPLAY_H__ */
+	igt_assert(drmWaitVBlank(drm_fd, &wait_vbl) == 0);
+}
diff --git a/lib/igt_display.h b/lib/igt_display.h
index 22c8a9f..1357ce9 100644
--- a/lib/igt_display.h
+++ b/lib/igt_display.h
@@ -52,4 +52,6 @@ enum port {
 };
 #define port_name(p) ((p) + 'A')
 
+void igt_wait_for_vblank(int drm_fd, enum pipe pipe);
+
 #endif /* __IGT_DISPLAY_H__ */
-- 
1.8.3.1

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