drm/radeon: add new getparam for number of backends.
This allows userspace to work out how many DBs there are
for conditional rendering to work.
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/include/drm/radeon_drm.h b/include/drm/radeon_drm.h
index e5c607a..3dec41c 100644
--- a/include/drm/radeon_drm.h
+++ b/include/drm/radeon_drm.h
@@ -908,6 +908,7 @@
#define RADEON_INFO_WANT_HYPERZ 0x07
#define RADEON_INFO_WANT_CMASK 0x08 /* get access to CMASK on r300 */
#define RADEON_INFO_CLOCK_CRYSTAL_FREQ 0x09 /* clock crystal frequency */
+#define RADEON_INFO_NUM_BACKENDS 0x0a /* DB/backends for r600+ - need for OQ */
struct drm_radeon_info {
uint32_t request;