[SPRD] Add drmIotclHook

Change-Id: I562fc0004fe16cc2e49014a5c5fcc5331c8449e0

2 files changed, 17 insertions, 2 deletions

diff --git a/xf86drm.c b/xf86drm.c
index d900b4bd..c70b823f 100644..100755
--- a/xf86drm.c
+++ b/xf86drm.c
@@ -162,17 +162,30 @@ void drmFree(void *pt)
 /**
  * Call ioctl, restarting if it is interupted
  */
+static ioctl_hook fp_ioctl_hook;
+
 int
 drmIoctl(int fd, unsigned long request, void *arg)
 {
     int	ret;
 
+    if (fp_ioctl_hook){
+        return fp_ioctl_hook(fd, request, arg);
+    }
+
     do {
-	ret = ioctl(fd, request, arg);
+       ret = ioctl(fd, request, arg);
     } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
     return ret;
 }
 
+int
+drmIoctlSetHook(ioctl_hook hook)
+{
+    fp_ioctl_hook = hook;
+    return 0;
+}
+
 static unsigned long drmGetKeyFromFd(int fd)
 {
     stat_t     st;
@@ -1950,7 +1963,7 @@ int drmWaitVBlank(int fd, drmVBlankPtr vbl)
     timeout.tv_sec++;
 
     do {
-       ret = ioctl(fd, DRM_IOCTL_WAIT_VBLANK, vbl);
+       ret = drmIoctl(fd, DRM_IOCTL_WAIT_VBLANK, vbl);
        vbl->request.type &= ~DRM_VBLANK_RELATIVE;
        if (ret && errno == EINTR) {
 	       clock_gettime(CLOCK_MONOTONIC, &cur);
diff --git a/xf86drm.h b/xf86drm.h
index c024cc44..3dd782f2 100644..100755
--- a/xf86drm.h
+++ b/xf86drm.h
@@ -114,6 +114,8 @@ extern int drmIoctl(int fd, unsigned long request, void *arg);
 extern void *drmGetHashTable(void);
 extern drmHashEntry *drmGetEntry(int fd);
 
+typedef int (*ioctl_hook)(int fd, unsigned long request, void *arg);
+extern int drmIoctlSetHook(ioctl_hook hook);
 /**
  * Driver version information.
  *