drm/msm/sde: add hardware driver support for writeback interface
Writeback block is used to output composited images to memory.
This patch adds support to the hardware driver layer such that
writeback hardware block can be controlled using hardware
abstraction api common across families of hardware.
Change-Id: I92a69f1d564ee87e3f040cbef5a0302468599440
Signed-off-by: Alan Kwong <akwong@codeaurora.org>
diff --git a/drivers/gpu/drm/msm/sde/sde_hw_ctl.h b/drivers/gpu/drm/msm/sde/sde_hw_ctl.h
index b5a675e..007cb80 100644
--- a/drivers/gpu/drm/msm/sde/sde_hw_ctl.h
+++ b/drivers/gpu/drm/msm/sde/sde_hw_ctl.h
@@ -118,6 +118,10 @@
u32 *flushbits,
enum sde_cdm blk);
+ int (*get_bitmask_wb)(struct sde_hw_ctl *ctx,
+ u32 *flushbits,
+ enum sde_wb blk);
+
void (*setup_blendstage)(struct sde_hw_ctl *ctx,
enum sde_lm lm,
struct sde_hw_stage_cfg *cfg);