From: Aric Cyr <aric....@amd.com>

Disable triplebuffering by default.

Signed-off-by: Aric Cyr <aric....@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pil...@amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c   |  3 ---
 drivers/gpu/drm/amd/display/dc/core/dc.c            |  9 +++------
 drivers/gpu/drm/amd/display/dc/dc.h                 |  2 +-
 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c  | 13 ++++++-------
 .../gpu/drm/amd/display/dc/dcn20/dcn20_resource.c   |  2 +-
 .../gpu/drm/amd/display/dc/dcn21/dcn21_resource.c   |  2 ++
 .../gpu/drm/amd/display/dc/dcn30/dcn30_resource.c   |  1 +
 7 files changed, 14 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index cb624ee70545..a7f08a8199e7 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3336,9 +3336,6 @@ static int amdgpu_dm_initialize_drm_device(struct 
amdgpu_device *adev)
                goto fail;
        }
 
-       /* No userspace support. */
-       dm->dc->debug.disable_tri_buf = true;
-
        return 0;
 fail:
        kfree(aencoder);
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c 
b/drivers/gpu/drm/amd/display/dc/core/dc.c
index dc463d99ef50..511ab25b3f1a 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -2415,8 +2415,7 @@ static void commit_planes_for_stream(struct dc *dc,
                                plane_state->triplebuffer_flips = false;
                                if (update_type == UPDATE_TYPE_FAST &&
                                        dc->hwss.program_triplebuffer != NULL &&
-                                       !plane_state->flip_immediate &&
-                                       !dc->debug.disable_tri_buf) {
+                                       !plane_state->flip_immediate && 
dc->debug.enable_tri_buf) {
                                                /*triple buffer for VUpdate  
only*/
                                                plane_state->triplebuffer_flips 
= true;
                                }
@@ -2443,8 +2442,7 @@ static void commit_planes_for_stream(struct dc *dc,
 
                        ASSERT(!pipe_ctx->plane_state->triplebuffer_flips);
 
-                       if (dc->hwss.program_triplebuffer != NULL &&
-                               !dc->debug.disable_tri_buf) {
+                       if (dc->hwss.program_triplebuffer != NULL && 
dc->debug.enable_tri_buf) {
                                /*turn off triple buffer for full update*/
                                dc->hwss.program_triplebuffer(
                                        dc, pipe_ctx, 
pipe_ctx->plane_state->triplebuffer_flips);
@@ -2509,8 +2507,7 @@ static void commit_planes_for_stream(struct dc *dc,
                                if (pipe_ctx->plane_state != plane_state)
                                        continue;
                                /*program triple buffer after lock based on 
flip type*/
-                               if (dc->hwss.program_triplebuffer != NULL &&
-                                       !dc->debug.disable_tri_buf) {
+                               if (dc->hwss.program_triplebuffer != NULL && 
dc->debug.enable_tri_buf) {
                                        /*only enable triplebuffer for  
fast_update*/
                                        dc->hwss.program_triplebuffer(
                                                dc, pipe_ctx, 
plane_state->triplebuffer_flips);
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h 
b/drivers/gpu/drm/amd/display/dc/dc.h
index 7416fd37e7d8..0607122e04de 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -476,7 +476,7 @@ struct dc_debug_options {
        unsigned int force_odm_combine_4to1; //bit vector based on otg inst
 #endif
        unsigned int force_fclk_khz;
-       bool disable_tri_buf;
+       bool enable_tri_buf;
        bool dmub_offload_enabled;
        bool dmcub_emulation;
 #if defined(CONFIG_DRM_AMD_DC_DCN3_0)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c 
b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index ee3348711abe..ee56060943f1 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -1642,16 +1642,15 @@ void dcn20_program_front_end_for_ctx(
        struct dce_hwseq *hws = dc->hwseq;
        DC_LOGGER_INIT(dc->ctx->logger);
 
-       for (i = 0; i < dc->res_pool->pipe_count; i++) {
-               struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
+       if (dc->hwss.program_triplebuffer != NULL && dc->debug.enable_tri_buf) {
+               for (i = 0; i < dc->res_pool->pipe_count; i++) {
+                       struct pipe_ctx *pipe_ctx = 
&context->res_ctx.pipe_ctx[i];
 
-               if (!pipe_ctx->top_pipe && !pipe_ctx->prev_odm_pipe && 
pipe_ctx->plane_state) {
-                       ASSERT(!pipe_ctx->plane_state->triplebuffer_flips);
-                       if (dc->hwss.program_triplebuffer != NULL &&
-                               !dc->debug.disable_tri_buf) {
+                       if (!pipe_ctx->top_pipe && !pipe_ctx->prev_odm_pipe && 
pipe_ctx->plane_state) {
+                               
ASSERT(!pipe_ctx->plane_state->triplebuffer_flips);
                                /*turn off triple buffer for full update*/
                                dc->hwss.program_triplebuffer(
-                                       dc, pipe_ctx, 
pipe_ctx->plane_state->triplebuffer_flips);
+                                               dc, pipe_ctx, 
pipe_ctx->plane_state->triplebuffer_flips);
                        }
                }
        }
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c 
b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
index 1b9874445134..55ce2c7df84e 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
@@ -1075,7 +1075,6 @@ static const struct dc_debug_options debug_defaults_drv = 
{
                .disable_pplib_wm_range = false,
                .scl_reset_length10 = true,
                .sanity_checks = false,
-               .disable_tri_buf = true,
                .underflow_assert_delay_us = 0xFFFFFFFF,
 };
 
@@ -1092,6 +1091,7 @@ static const struct dc_debug_options debug_defaults_diags 
= {
                .disable_stutter = true,
                .scl_reset_length10 = true,
                .underflow_assert_delay_us = 0xFFFFFFFF,
+               .enable_tri_buf = true,
 };
 
 void dcn20_dpp_destroy(struct dpp **dpp)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c 
b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
index 78743ae37851..e73785e74cba 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
@@ -894,6 +894,8 @@ static const struct dc_debug_options debug_defaults_diags = 
{
                .disable_pplib_wm_range = true,
                .disable_stutter = true,
                .disable_48mhz_pwrdwn = true,
+               .disable_psr = true,
+               .enable_tri_buf = true
 };
 
 enum dcn20_clk_src_array_id {
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c 
b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
index 8be4f21169d0..6746d582d723 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
@@ -865,6 +865,7 @@ static const struct dc_debug_options debug_defaults_diags = 
{
        .scl_reset_length10 = true,
        .dwb_fi_phase = -1, // -1 = disable
        .dmub_command_table = true,
+       .enable_tri_buf = true,
 };
 
 void dcn30_dpp_destroy(struct dpp **dpp)
-- 
2.25.1

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