From: Damien Lespiau <damien.lespiau@intel.com>
Date: Fri, 11 Oct 2013 17:31:20 +0000 (+0100)
Subject: lib: Add igt_wait_for_vblank() helper
X-Git-Tag: intel-gpu-tools-1.5~94
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f673775fe8a7d9faeaa80f4af9677fecf16e4b17;p=profile%2Fextras%2Fintel-gpu-tools.git

lib: Add igt_wait_for_vblank() helper

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
---

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.c b/lib/igt_display.c
new file mode 100644
index 0000000..28e21e6
--- /dev/null
+++ b/lib/igt_display.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include <string.h>
+
+#include "drmtest.h"
+#include "igt_display.h"
+
+void igt_wait_for_vblank(int drm_fd, enum pipe pipe)
+{
+	drmVBlank wait_vbl;
+
+	memset(&wait_vbl, 0, sizeof(wait_vbl));
+
+	wait_vbl.request.type = pipe << DRM_VBLANK_HIGH_CRTC_SHIFT |
+				DRM_VBLANK_RELATIVE;
+	wait_vbl.request.sequence = 1;
+
+	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__ */