From: Andrew Jiang <Andrew.Jiang@amd.com>
Date: Thu, 16 Nov 2017 17:08:44 -0500
Subject: drm/amd/display: Add dcc_change surface update flag
Git-commit: e9dd9223c6d633a33fd2125ed1b1ec9d5bcbb5a7
Patch-mainline: v4.16-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Program the DCC registers when dcc_change is true.

Signed-off-by: Andrew Jiang <Andrew.Jiang@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c                  |    5 +++++
 drivers/gpu/drm/amd/display/dc/dc.h                       |    1 +
 drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c |    1 +
 3 files changed, 7 insertions(+)

--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -985,6 +985,11 @@ static enum surface_update_type get_plan
 	if (u->plane_info->per_pixel_alpha != u->surface->per_pixel_alpha)
 		update_flags->bits.per_pixel_alpha_change = 1;
 
+	if (u->plane_info->dcc.enable != u->surface->dcc.enable
+			|| u->plane_info->dcc.grph.independent_64b_blks != u->surface->dcc.grph.independent_64b_blks
+			|| u->plane_info->dcc.grph.meta_pitch != u->surface->dcc.grph.meta_pitch)
+		update_flags->bits.dcc_change = 1;
+
 	if (pixel_format_to_bpp(u->plane_info->format) !=
 			pixel_format_to_bpp(u->surface->format))
 		/* different bytes per element will require full bandwidth
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -387,6 +387,7 @@ union surface_update_flags {
 
 	struct {
 		/* Medium updates */
+		uint32_t dcc_change:1;
 		uint32_t color_space_change:1;
 		uint32_t input_tf_change:1;
 		uint32_t horizontal_mirror_change:1;
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -2066,6 +2066,7 @@ static void update_dchubp_dpp(
 		plane_state->update_flags.bits.horizontal_mirror_change ||
 		plane_state->update_flags.bits.rotation_change ||
 		plane_state->update_flags.bits.swizzle_change ||
+		plane_state->update_flags.bits.dcc_change ||
 		plane_state->update_flags.bits.bpp_change) {
 		hubp->funcs->hubp_program_surface_config(
 			hubp,