From 31f9608bbbbf438bffdabdaeba7b107703518aeb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kristian=20H=C3=B8gsberg?= <krh@sasori.(none)>
Date: Thu, 12 Nov 2009 14:06:45 -0500
Subject: [PATCH] Add libdrm support for page flip ioctl

---
 libdrm/xf86drmMode.c   | 13 +++++++++++++
 libdrm/xf86drmMode.h   |  2 ++
 shared-core/drm.h      |  1 +
 shared-core/drm_mode.h | 11 +++++++++++
 4 files changed, 27 insertions(+)

diff --git a/libdrm/xf86drmMode.c b/libdrm/xf86drmMode.c
index 6d85113a..400ad49d 100644
--- a/libdrm/xf86drmMode.c
+++ b/libdrm/xf86drmMode.c
@@ -710,3 +710,16 @@ int drmHandleEvent(int fd, drmEventContextPtr evctx)
 	return 0;
 }
 
+int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id,
+		    uint32_t flags, void *user_data)
+{
+	struct drm_mode_crtc_page_flip flip;
+
+	flip.fb_id = fb_id;
+	flip.crtc_id = crtc_id;
+	flip.user_data = VOID2U64(user_data);
+	flip.flags = flags;
+	flip.reserved = 0;
+
+	return drmIoctl(fd, DRM_IOCTL_MODE_PAGE_FLIP, &flip);
+}
diff --git a/libdrm/xf86drmMode.h b/libdrm/xf86drmMode.h
index 62304bb9..705369fe 100644
--- a/libdrm/xf86drmMode.h
+++ b/libdrm/xf86drmMode.h
@@ -362,3 +362,5 @@ extern int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size,
 			       uint16_t *red, uint16_t *green, uint16_t *blue);
 extern int drmModeCrtcGetGamma(int fd, uint32_t crtc_id, uint32_t size,
 			       uint16_t *red, uint16_t *green, uint16_t *blue);
+extern int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id,
+			   uint32_t flags, void *user_data);
diff --git a/shared-core/drm.h b/shared-core/drm.h
index 089e184a..f820e458 100644
--- a/shared-core/drm.h
+++ b/shared-core/drm.h
@@ -795,6 +795,7 @@ struct drm_gem_open {
 #define DRM_IOCTL_MODE_GETFB		DRM_IOWR(0xAD, struct drm_mode_fb_cmd)
 #define DRM_IOCTL_MODE_ADDFB		DRM_IOWR(0xAE, struct drm_mode_fb_cmd)
 #define DRM_IOCTL_MODE_RMFB		DRM_IOWR(0xAF, uint32_t)
+#define DRM_IOCTL_MODE_PAGE_FLIP	DRM_IOWR(0xB0, struct drm_mode_crtc_page_flip)
 
 /*@}*/
 
diff --git a/shared-core/drm_mode.h b/shared-core/drm_mode.h
index 9b92733d..fceac3c8 100644
--- a/shared-core/drm_mode.h
+++ b/shared-core/drm_mode.h
@@ -270,4 +270,15 @@ struct drm_mode_crtc_lut {
 	uint64_t blue;
 };
 
+#define DRM_MODE_PAGE_FLIP_EVENT 0x01
+#define DRM_MODE_PAGE_FLIP_FLAGS DRM_MODE_PAGE_FLIP_EVENT
+
+struct drm_mode_crtc_page_flip {
+	uint32_t crtc_id;
+	uint32_t fb_id;
+	uint32_t flags;
+	uint32_t reserved;
+	uint64_t user_data;
+};
+
 #endif