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From b4f0867610fc91e8fc7fc73625e438c096baeef7 Mon Sep 17 00:00:00 2001
From: "Jerry (Fangzhi) Zuo" <Jerry.Zuo@amd.com>
Date: Tue, 17 Jul 2018 14:34:23 -0400
Subject: [PATCH 4667/5725] drm/amd/display: Fix Vega10 black screen after mode
change
Do not update clocks if no stream is showing up in the context.
Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
---
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 2 +-
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h | 5 +++++
drivers/gpu/drm/amd/display/dc/dce120/dce120_hw_sequencer.c | 10 ++++++++++
3 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 4cd6bc0..383b63d 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -2661,7 +2661,7 @@ static void pplib_apply_display_requirements(
dc->prev_display_config = *pp_display_cfg;
}
-static void dce110_set_bandwidth(
+void dce110_set_bandwidth(
struct dc *dc,
struct dc_state *context,
bool decrease_allowed)
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h
index f48d5a6..1782757 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h
@@ -64,6 +64,11 @@ void dce110_fill_display_configs(
const struct dc_state *context,
struct dm_pp_display_configuration *pp_display_cfg);
+void dce110_set_bandwidth(
+ struct dc *dc,
+ struct dc_state *context,
+ bool decrease_allowed);
+
uint32_t dce110_get_min_vblank_time_us(const struct dc_state *context);
void dp_receiver_power_ctrl(struct dc_link *link, bool on);
diff --git a/drivers/gpu/drm/amd/display/dc/dce120/dce120_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce120/dce120_hw_sequencer.c
index e96ff86..5853522 100644
--- a/drivers/gpu/drm/amd/display/dc/dce120/dce120_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce120/dce120_hw_sequencer.c
@@ -244,7 +244,16 @@ static void dce120_update_dchub(
dh_data->dchub_info_valid = false;
}
+static void dce120_set_bandwidth(
+ struct dc *dc,
+ struct dc_state *context,
+ bool decrease_allowed)
+{
+ if (context->stream_count <= 0)
+ return;
+ dce110_set_bandwidth(dc, context, decrease_allowed);
+}
void dce120_hw_sequencer_construct(struct dc *dc)
{
@@ -254,5 +263,6 @@ void dce120_hw_sequencer_construct(struct dc *dc)
dce110_hw_sequencer_construct(dc);
dc->hwss.enable_display_power_gating = dce120_enable_display_power_gating;
dc->hwss.update_dchub = dce120_update_dchub;
+ dc->hwss.set_bandwidth = dce120_set_bandwidth;
}
--
2.7.4
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