drm/amd/display: Correct DSC padding accounting

[WHY]
- After the addition of all OVT patches, DSC padding was being accounted
  for multiple times, effectively doubling the padding
- This caused compliance failures or corruption

[HOW]
- Add padding to DSC pic width when required by HW, and do not re-add
  when calculating reg values
- Do not add padding when computing PPS values, and instead track padding
  separately to add when calculating slice width values

Reviewed-by: Chris Park <chris.park@amd.com>
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Relja Vojvodic <rvojvodi@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

5 files changed, 8 insertions, 7 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn314/dcn314_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn314/dcn314_hwseq.c
index 4ee6ed610de0..3e239124c17d 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn314/dcn314_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn314/dcn314_hwseq.c
@@ -108,7 +108,7 @@ static void update_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable)
 		dsc_cfg.dc_dsc_cfg = stream->timing.dsc_cfg;
 		ASSERT(dsc_cfg.dc_dsc_cfg.num_slices_h % opp_cnt == 0);
 		dsc_cfg.dc_dsc_cfg.num_slices_h /= opp_cnt;
-		dsc_cfg.dsc_padding = pipe_ctx->dsc_padding_params.dsc_hactive_padding;
+		dsc_cfg.dsc_padding = 0;
 
 		dsc->funcs->dsc_set_config(dsc, &dsc_cfg, &dsc_optc_cfg);
 		dsc->funcs->dsc_enable(dsc, pipe_ctx->stream_res.opp->inst);
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
index bf19ba65d09a..b213a2ac827a 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
@@ -1061,7 +1061,7 @@ void dcn32_update_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable)
 		dsc_cfg.dc_dsc_cfg = stream->timing.dsc_cfg;
 		ASSERT(dsc_cfg.dc_dsc_cfg.num_slices_h % opp_cnt == 0);
 		dsc_cfg.dc_dsc_cfg.num_slices_h /= opp_cnt;
-		dsc_cfg.dsc_padding = pipe_ctx->dsc_padding_params.dsc_hactive_padding;
+		dsc_cfg.dsc_padding = 0;
 
 		if (should_use_dto_dscclk)
 			dccg->funcs->set_dto_dscclk(dccg, dsc->inst, dsc_cfg.dc_dsc_cfg.num_slices_h);
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c
index 7aa0f452e8f7..cb2dfd34b5e2 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c
@@ -364,7 +364,7 @@ static void update_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable)
 		dsc_cfg.dc_dsc_cfg = stream->timing.dsc_cfg;
 		ASSERT(dsc_cfg.dc_dsc_cfg.num_slices_h % opp_cnt == 0);
 		dsc_cfg.dc_dsc_cfg.num_slices_h /= opp_cnt;
-		dsc_cfg.dsc_padding = pipe_ctx->dsc_padding_params.dsc_hactive_padding;
+		dsc_cfg.dsc_padding = 0;
 
 		dsc->funcs->dsc_set_config(dsc, &dsc_cfg, &dsc_optc_cfg);
 		dsc->funcs->dsc_enable(dsc, pipe_ctx->stream_res.opp->inst);
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
index 31ce52734edd..87f9ceebe26a 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
@@ -841,7 +841,7 @@ void link_set_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable)
 		dsc_cfg.dc_dsc_cfg = stream->timing.dsc_cfg;
 		ASSERT(dsc_cfg.dc_dsc_cfg.num_slices_h % opp_cnt == 0);
 		dsc_cfg.dc_dsc_cfg.num_slices_h /= opp_cnt;
-		dsc_cfg.dsc_padding = pipe_ctx->dsc_padding_params.dsc_hactive_padding;
+		dsc_cfg.dsc_padding = 0;
 
 		if (should_use_dto_dscclk)
 			dccg->funcs->set_dto_dscclk(dccg, dsc->inst, dsc_cfg.dc_dsc_cfg.num_slices_h);
@@ -857,6 +857,7 @@ void link_set_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable)
 		}
 		dsc_cfg.dc_dsc_cfg.num_slices_h *= opp_cnt;
 		dsc_cfg.pic_width *= opp_cnt;
+		dsc_cfg.dsc_padding = pipe_ctx->dsc_padding_params.dsc_hactive_padding;
 
 		optc_dsc_mode = dsc_optc_cfg.is_pixel_format_444 ? OPTC_DSC_ENABLED_444 : OPTC_DSC_ENABLED_NATIVE_SUBSAMPLED;
 
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn20/dcn20_resource.c
index 6679c1a14f2f..8d10aac9c510 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn20/dcn20_resource.c
@@ -1660,8 +1660,8 @@ bool dcn20_validate_dsc(struct dc *dc, struct dc_state *new_ctx)
 		if (pipe_ctx->top_pipe || pipe_ctx->prev_odm_pipe || !stream || !stream->timing.flags.DSC)
 			continue;
 
-		dsc_cfg.pic_width = (stream->timing.h_addressable + stream->timing.h_border_left
-				+ stream->timing.h_border_right) / opp_cnt;
+		dsc_cfg.pic_width = (stream->timing.h_addressable + pipe_ctx->dsc_padding_params.dsc_hactive_padding
+				+ stream->timing.h_border_left + stream->timing.h_border_right) / opp_cnt;
 		dsc_cfg.pic_height = stream->timing.v_addressable + stream->timing.v_border_top
 				+ stream->timing.v_border_bottom;
 		dsc_cfg.pixel_encoding = stream->timing.pixel_encoding;
@@ -1669,7 +1669,7 @@ bool dcn20_validate_dsc(struct dc *dc, struct dc_state *new_ctx)
 		dsc_cfg.is_odm = pipe_ctx->next_odm_pipe ? true : false;
 		dsc_cfg.dc_dsc_cfg = stream->timing.dsc_cfg;
 		dsc_cfg.dc_dsc_cfg.num_slices_h /= opp_cnt;
-		dsc_cfg.dsc_padding = pipe_ctx->dsc_padding_params.dsc_hactive_padding;
+		dsc_cfg.dsc_padding = 0;
 
 		if (!pipe_ctx->stream_res.dsc->funcs->dsc_validate_stream(pipe_ctx->stream_res.dsc, &dsc_cfg))
 			return false;