This is a note to let you know that I've just added the patch titled
drm/amd/display: update extended blank for dcn314 onwards
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-update-extended-blank-for-dcn314-onw.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 336d550d35fe70478fd24fc3ab832cd86ef373a0
Author: Gabe Teeger <gabe.teeger@xxxxxxx>
Date: Thu Apr 6 17:03:06 2023 -0400
drm/amd/display: update extended blank for dcn314 onwards
[ Upstream commit 469a62938a45ef382c9cb7b9fec6c6c1fcd781c0 ]
[Why]
Flickering and underflow was observed when testing extended
blank on dcn314.
[What]
Vstartup is contrainted by vblank_nom, so adjusting it to include
non-adjusted vtotal in its calculation during freesync video
means that Vstartup is not changed when vtotal changes.
This fixed the flickering + underflow.
dc_extended_blank_supported function was removed
because extended blank is only relevant to when
zstate is supported. The increased vtotal during
freesync can be passed to dml regardless of whether
extended blank is supported or not, so this function is
not needed.
Updates were made recently in dml to the calculation of
min_dst_y_next_start. Dml input for dcn314 will now
always use the newer calculation for min_dst_y_next_start.
Dml input for older dcn versions remains untouched.
The variable optimized_min_dst_y_next_start
is replaced everywhere with min_dst_y_next_start,
and the updated dml allows min_dst_y_next_start to
increase to an optimized value during freesync video,
then return to default when freesync is disengaged.
Also removed registry key for controlling
extended blank feature.
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@xxxxxxx>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Signed-off-by: Gabe Teeger <gabe.teeger@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Stable-dep-of: 2a9482e55968 ("drm/amd/display: Prevent vtotal from being set to 0")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 7f6bdad57c920..d22095a3a265a 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -2632,9 +2632,6 @@ static enum surface_update_type check_update_surfaces_for_stream(
stream_update->vrr_active_variable))
su_flags->bits.fams_changed = 1;
- if (stream_update->crtc_timing_adjust && dc_extended_blank_supported(dc))
- su_flags->bits.crtc_timing_adjust = 1;
-
if (su_flags->raw != 0)
overall_type = UPDATE_TYPE_FULL;
@@ -4900,21 +4897,3 @@ void dc_notify_vsync_int_state(struct dc *dc, struct dc_stream_state *stream, bo
if (pipe->stream_res.abm && pipe->stream_res.abm->funcs->set_abm_pause)
pipe->stream_res.abm->funcs->set_abm_pause(pipe->stream_res.abm, !enable, i, pipe->stream_res.tg->inst);
}
-
-/**
- * dc_extended_blank_supported - Decide whether extended blank is supported
- *
- * @dc: [in] Current DC state
- *
- * Extended blank is a freesync optimization feature to be enabled in the
- * future. During the extra vblank period gained from freesync, we have the
- * ability to enter z9/z10.
- *
- * Return:
- * Indicate whether extended blank is supported (%true or %false)
- */
-bool dc_extended_blank_supported(struct dc *dc)
-{
- return dc->debug.extended_blank_optimization && !dc->debug.disable_z10
- && dc->caps.zstate_support && dc->caps.is_apu;
-}
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 07d86b961c798..9279990e43694 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -2125,8 +2125,6 @@ struct dc_sink_init_data {
bool converter_disable_audio;
};
-bool dc_extended_blank_supported(struct dc *dc);
-
struct dc_sink *dc_sink_create(const struct dc_sink_init_data *init_params);
/* Newer interfaces */
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 c38be3c6c234e..a621b6a27c1fc 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -2128,7 +2128,7 @@ void dcn20_optimize_bandwidth(
dc->clk_mgr,
context,
true);
- if (dc_extended_blank_supported(dc) && context->bw_ctx.bw.dcn.clk.zstate_support == DCN_ZSTATE_SUPPORT_ALLOW) {
+ if (context->bw_ctx.bw.dcn.clk.zstate_support == DCN_ZSTATE_SUPPORT_ALLOW) {
for (i = 0; i < dc->res_pool->pipe_count; ++i) {
struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
@@ -2136,7 +2136,7 @@ void dcn20_optimize_bandwidth(
&& pipe_ctx->stream->adjust.v_total_min == pipe_ctx->stream->adjust.v_total_max
&& pipe_ctx->stream->adjust.v_total_max > pipe_ctx->stream->timing.v_total)
pipe_ctx->plane_res.hubp->funcs->program_extended_blank(pipe_ctx->plane_res.hubp,
- pipe_ctx->dlg_regs.optimized_min_dst_y_next_start);
+ pipe_ctx->dlg_regs.min_dst_y_next_start);
}
}
}
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
index f1c1a4b5fcac3..7661f8946aa31 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
@@ -948,10 +948,10 @@ static enum dcn_zstate_support_state decide_zstate_support(struct dc *dc, struc
{
int plane_count;
int i;
- unsigned int optimized_min_dst_y_next_start_us;
+ unsigned int min_dst_y_next_start_us;
plane_count = 0;
- optimized_min_dst_y_next_start_us = 0;
+ min_dst_y_next_start_us = 0;
for (i = 0; i < dc->res_pool->pipe_count; i++) {
if (context->res_ctx.pipe_ctx[i].plane_state)
plane_count++;
@@ -973,19 +973,18 @@ static enum dcn_zstate_support_state decide_zstate_support(struct dc *dc, struc
else if (context->stream_count == 1 && context->streams[0]->signal == SIGNAL_TYPE_EDP) {
struct dc_link *link = context->streams[0]->sink->link;
struct dc_stream_status *stream_status = &context->stream_status[0];
+ struct dc_stream_state *current_stream = context->streams[0];
int minmum_z8_residency = dc->debug.minimum_z8_residency_time > 0 ? dc->debug.minimum_z8_residency_time : 1000;
bool allow_z8 = context->bw_ctx.dml.vba.StutterPeriod > (double)minmum_z8_residency;
bool is_pwrseq0 = link->link_index == 0;
+ bool isFreesyncVideo;
- if (dc_extended_blank_supported(dc)) {
- for (i = 0; i < dc->res_pool->pipe_count; i++) {
- if (context->res_ctx.pipe_ctx[i].stream == context->streams[0]
- && context->res_ctx.pipe_ctx[i].stream->adjust.v_total_min == context->res_ctx.pipe_ctx[i].stream->adjust.v_total_max
- && context->res_ctx.pipe_ctx[i].stream->adjust.v_total_min > context->res_ctx.pipe_ctx[i].stream->timing.v_total) {
- optimized_min_dst_y_next_start_us =
- context->res_ctx.pipe_ctx[i].dlg_regs.optimized_min_dst_y_next_start_us;
- break;
- }
+ isFreesyncVideo = current_stream->adjust.v_total_min == current_stream->adjust.v_total_max;
+ isFreesyncVideo = isFreesyncVideo && current_stream->timing.v_total < current_stream->adjust.v_total_min;
+ for (i = 0; i < dc->res_pool->pipe_count; i++) {
+ if (context->res_ctx.pipe_ctx[i].stream == current_stream && isFreesyncVideo) {
+ min_dst_y_next_start_us = context->res_ctx.pipe_ctx[i].dlg_regs.min_dst_y_next_start_us;
+ break;
}
}
@@ -993,7 +992,7 @@ static enum dcn_zstate_support_state decide_zstate_support(struct dc *dc, struc
if (stream_status->plane_count > 1)
return DCN_ZSTATE_SUPPORT_DISALLOW;
- if (is_pwrseq0 && (context->bw_ctx.dml.vba.StutterPeriod > 5000.0 || optimized_min_dst_y_next_start_us > 5000))
+ if (is_pwrseq0 && (context->bw_ctx.dml.vba.StutterPeriod > 5000.0 || min_dst_y_next_start_us > 5000))
return DCN_ZSTATE_SUPPORT_ALLOW;
else if (is_pwrseq0 && link->psr_settings.psr_version == DC_PSR_VERSION_1 && !link->panel_config.psr.disable_psr)
return allow_z8 ? DCN_ZSTATE_SUPPORT_ALLOW_Z8_Z10_ONLY : DCN_ZSTATE_SUPPORT_ALLOW_Z10_ONLY;
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_rq_dlg_calc_31.c b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_rq_dlg_calc_31.c
index 2244e4fb8c96d..fcde8f21b8be0 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_rq_dlg_calc_31.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_rq_dlg_calc_31.c
@@ -987,8 +987,7 @@ static void dml_rq_dlg_get_dlg_params(
dlg_vblank_start = interlaced ? (vblank_start / 2) : vblank_start;
disp_dlg_regs->min_dst_y_next_start = (unsigned int) (((double) dlg_vblank_start) * dml_pow(2, 2));
- disp_dlg_regs->optimized_min_dst_y_next_start_us = 0;
- disp_dlg_regs->optimized_min_dst_y_next_start = disp_dlg_regs->min_dst_y_next_start;
+ disp_dlg_regs->min_dst_y_next_start_us = 0;
ASSERT(disp_dlg_regs->min_dst_y_next_start < (unsigned int)dml_pow(2, 18));
dml_print("DML_DLG: %s: min_ttu_vblank (us) = %3.2f\n", __func__, min_ttu_vblank);
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c
index 9e54e3d0eb780..1d00eb9e73c62 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c
@@ -286,6 +286,7 @@ int dcn314_populate_dml_pipes_from_context_fpu(struct dc *dc, struct dc_state *c
struct resource_context *res_ctx = &context->res_ctx;
struct pipe_ctx *pipe;
bool upscaled = false;
+ bool isFreesyncVideo = false;
dc_assert_fp_enabled();
@@ -299,9 +300,16 @@ int dcn314_populate_dml_pipes_from_context_fpu(struct dc *dc, struct dc_state *c
pipe = &res_ctx->pipe_ctx[i];
timing = &pipe->stream->timing;
- if (dc_extended_blank_supported(dc) && pipe->stream->adjust.v_total_max == pipe->stream->adjust.v_total_min
- && pipe->stream->adjust.v_total_min > timing->v_total)
+ isFreesyncVideo = pipe->stream->adjust.v_total_max == pipe->stream->adjust.v_total_min;
+ isFreesyncVideo = isFreesyncVideo && pipe->stream->adjust.v_total_min > timing->v_total;
+
+ if (!isFreesyncVideo) {
+ pipes[pipe_cnt].pipe.dest.vblank_nom =
+ dcn3_14_ip.VBlankNomDefaultUS / (timing->h_total / (timing->pix_clk_100hz / 10000.0));
+ } else {
pipes[pipe_cnt].pipe.dest.vtotal = pipe->stream->adjust.v_total_min;
+ pipes[pipe_cnt].pipe.dest.vblank_nom = timing->v_total - pipes[pipe_cnt].pipe.dest.vactive;
+ }
if (pipe->plane_state &&
(pipe->plane_state->src_rect.height < pipe->plane_state->dst_rect.height ||
@@ -323,8 +331,6 @@ int dcn314_populate_dml_pipes_from_context_fpu(struct dc *dc, struct dc_state *c
pipes[pipe_cnt].pipe.src.dcc_fraction_of_zs_req_luma = 0;
pipes[pipe_cnt].pipe.src.dcc_fraction_of_zs_req_chroma = 0;
pipes[pipe_cnt].pipe.dest.vfront_porch = timing->v_front_porch;
- pipes[pipe_cnt].pipe.dest.vblank_nom =
- dcn3_14_ip.VBlankNomDefaultUS / (timing->h_total / (timing->pix_clk_100hz / 10000.0));
pipes[pipe_cnt].pipe.src.dcc_rate = 3;
pipes[pipe_cnt].dout.dsc_input_bpc = 0;
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn314/display_rq_dlg_calc_314.c b/drivers/gpu/drm/amd/display/dc/dml/dcn314/display_rq_dlg_calc_314.c
index ea4eb66066c42..4f945458b2b7e 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn314/display_rq_dlg_calc_314.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn314/display_rq_dlg_calc_314.c
@@ -1051,7 +1051,6 @@ static void dml_rq_dlg_get_dlg_params(
float vba__refcyc_per_req_delivery_pre_l = get_refcyc_per_req_delivery_pre_l_in_us(mode_lib, e2e_pipe_param, num_pipes, pipe_idx) * refclk_freq_in_mhz; // From VBA
float vba__refcyc_per_req_delivery_l = get_refcyc_per_req_delivery_l_in_us(mode_lib, e2e_pipe_param, num_pipes, pipe_idx) * refclk_freq_in_mhz; // From VBA
- int blank_lines = 0;
memset(disp_dlg_regs, 0, sizeof(*disp_dlg_regs));
memset(disp_ttu_regs, 0, sizeof(*disp_ttu_regs));
@@ -1075,17 +1074,10 @@ static void dml_rq_dlg_get_dlg_params(
min_ttu_vblank = get_min_ttu_vblank_in_us(mode_lib, e2e_pipe_param, num_pipes, pipe_idx); // From VBA
dlg_vblank_start = interlaced ? (vblank_start / 2) : vblank_start;
- disp_dlg_regs->optimized_min_dst_y_next_start = disp_dlg_regs->min_dst_y_next_start;
- disp_dlg_regs->optimized_min_dst_y_next_start_us = 0;
- disp_dlg_regs->min_dst_y_next_start = (unsigned int) (((double) dlg_vblank_start) * dml_pow(2, 2));
- blank_lines = (dst->vblank_end + dst->vtotal_min - dst->vblank_start - dst->vstartup_start - 1);
- if (blank_lines < 0)
- blank_lines = 0;
- if (blank_lines != 0) {
- disp_dlg_regs->optimized_min_dst_y_next_start = vba__min_dst_y_next_start;
- disp_dlg_regs->optimized_min_dst_y_next_start_us = (disp_dlg_regs->optimized_min_dst_y_next_start * dst->hactive) / (unsigned int) dst->pixel_rate_mhz;
- disp_dlg_regs->min_dst_y_next_start = disp_dlg_regs->optimized_min_dst_y_next_start;
- }
+ disp_dlg_regs->min_dst_y_next_start_us =
+ (vba__min_dst_y_next_start * dst->hactive) / (unsigned int) dst->pixel_rate_mhz;
+ disp_dlg_regs->min_dst_y_next_start = vba__min_dst_y_next_start * dml_pow(2, 2);
+
ASSERT(disp_dlg_regs->min_dst_y_next_start < (unsigned int)dml_pow(2, 18));
dml_print("DML_DLG: %s: min_ttu_vblank (us) = %3.2f\n", __func__, min_ttu_vblank);
diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h b/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h
index 3c077164f3620..ff0246a9458fd 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h
@@ -619,8 +619,7 @@ struct _vcs_dpi_display_dlg_regs_st {
unsigned int refcyc_h_blank_end;
unsigned int dlg_vblank_end;
unsigned int min_dst_y_next_start;
- unsigned int optimized_min_dst_y_next_start;
- unsigned int optimized_min_dst_y_next_start_us;
+ unsigned int min_dst_y_next_start_us;
unsigned int refcyc_per_htotal;
unsigned int refcyc_x_after_scaler;
unsigned int dst_y_after_scaler;
