From 0f0a44812dc57b9bb37346e344bcf50235fa4d94 Mon Sep 17 00:00:00 2001
From: Russell King <rmk_cubox@arm.linux.org.uk>
Date: Wed, 12 Jun 2013 15:48:02 +0100
Subject: Initial prime support

Add initial prime support for exporting gem objects via dmabuf.

Signed-off-by: Russell King <rmk_cubox@arm.linux.org.uk>
---
 armada_bufmgr.c | 12 ++++++++++++
 armada_bufmgr.h |  3 +++
 configure.ac    |  2 +-
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/armada_bufmgr.c b/armada_bufmgr.c
index 2364051..6b9e667 100644
--- a/armada_bufmgr.c
+++ b/armada_bufmgr.c
@@ -3,6 +3,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
+#include <sys/fcntl.h>
 #include <sys/mman.h>
 #include <time.h>
 
@@ -452,6 +453,17 @@ int drm_armada_bo_flink(struct drm_armada_bo *dbo, uint32_t *name)
     return 0;
 }
 
+int drm_armada_bo_to_fd(struct drm_armada_bo *dbo, int *prime_fd)
+{
+    struct armada_bo *bo = to_armada_bo(dbo);
+    int fd = bo->mgr->fd;
+
+    if (drmPrimeHandleToFD(fd, bo->bo.handle, DRM_CLOEXEC, prime_fd))
+        return -1;
+
+    return 0;
+}
+
 int drm_armada_bo_map(struct drm_armada_bo *dbo)
 {
     struct armada_bo *bo = to_armada_bo(dbo);
diff --git a/armada_bufmgr.h b/armada_bufmgr.h
index 9e6188f..f84785f 100644
--- a/armada_bufmgr.h
+++ b/armada_bufmgr.h
@@ -36,6 +36,9 @@ struct drm_armada_bo *drm_armada_bo_create_from_name(struct drm_armada_bufmgr *,
 /* Create a global name from a BO */
 int drm_armada_bo_flink(struct drm_armada_bo *bo, uint32_t *name);
 
+/* Create a dmabuf fd for the BO */
+int drm_armada_bo_to_fd(struct drm_armada_bo *bo, int *fd);
+
 int drm_armada_bo_map(struct drm_armada_bo *bo);
 uint32_t drm_armada_bo_phys(struct drm_armada_bo *bo);
 void drm_armada_bo_get(struct drm_armada_bo *bo);
diff --git a/configure.ac b/configure.ac
index 0e1ab67..7b110a8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,7 +25,7 @@ AC_CHECK_FUNCS([clock_gettime], [CLOCK_LIB=],
                              [AC_MSG_ERROR([Could not find clock_gettime])])])
 AC_SUBST([CLOCK_LIB])
 
-PKG_CHECK_MODULES(LIBDRM, libdrm)
+PKG_CHECK_MODULES(LIBDRM, [libdrm >= 2.4.38])
 AC_SUBST(LIBDRM_CFLAGS)
 AC_SUBST(LIBDRM_LIBS)
 
-- 
cgit