drm/radeon/kms/avivo: fix some bugs in the display bandwidth setup
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/gpu/drm/radeon/radeon_fixed.h b/drivers/gpu/drm/radeon/radeon_fixed.h
index 90187d1..3d4d84e 100644
--- a/drivers/gpu/drm/radeon/radeon_fixed.h
+++ b/drivers/gpu/drm/radeon/radeon_fixed.h
@@ -38,6 +38,23 @@
#define fixed_init_half(A) { .full = rfixed_const_half((A)) }
#define rfixed_trunc(A) ((A).full >> 12)
+static inline u32 rfixed_floor(fixed20_12 A)
+{
+ u32 non_frac = rfixed_trunc(A);
+
+ return rfixed_const(non_frac);
+}
+
+static inline u32 rfixed_ceil(fixed20_12 A)
+{
+ u32 non_frac = rfixed_trunc(A);
+
+ if (A.full > rfixed_const(non_frac))
+ return rfixed_const(non_frac + 1);
+ else
+ return rfixed_const(non_frac);
+}
+
static inline u32 rfixed_div(fixed20_12 A, fixed20_12 B)
{
u64 tmp = ((u64)A.full << 13);