linux-kernel - [PATCH 5.17 248/343] drm/amd/display: Remove redundant dsc power gating from init

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Message-Id: <20220412062958.485919743@linuxfoundation.org>
Date:   Tue, 12 Apr 2022 08:31:06 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Anthony Koo <Anthony.Koo@....com>,
        Eric Yang <Eric.Yang2@....com>, Alex Hung <alex.hung@....com>,
        Roman Li <Roman.Li@....com>,
        Daniel Wheeler <daniel.wheeler@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.17 248/343] drm/amd/display: Remove redundant dsc power gating from init_hw

From: Roman Li <Roman.Li@....com>

[ Upstream commit 95707203407c4cf0b7e520a99d6f46d8aed4b57f ]

[Why]
DSC Power down code has been moved from dcn31_init_hw into init_pipes()
Need to remove it from dcn10_init_hw() as well to avoid duplicated action
on dcn1.x/2.x

[How]
Remove DSC power down code from dcn10_init_hw()

Fixes: 8fa6f4c5715c ("drm/amd/display: fixed the DSC power off sequence during Driver PnP")

Reviewed-by: Anthony Koo <Anthony.Koo@....com>
Reviewed-by: Eric Yang <Eric.Yang2@....com>
Acked-by: Alex Hung <alex.hung@....com>
Signed-off-by: Roman Li <Roman.Li@....com>
Tested-by: Daniel Wheeler <daniel.wheeler@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index 636e2d90ff93..2cefdd96d0cb 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -1493,13 +1493,6 @@ void dcn10_init_hw(struct dc *dc)
 			link->link_status.link_active = true;
 	}
 
-	/* Power gate DSCs */
-	if (!is_optimized_init_done) {
-		for (i = 0; i < res_pool->res_cap->num_dsc; i++)
-			if (hws->funcs.dsc_pg_control != NULL)
-				hws->funcs.dsc_pg_control(hws, res_pool->dscs[i]->inst, false);
-	}
-
 	/* we want to turn off all dp displays before doing detection */
 	if (dc->config.power_down_display_on_boot)
 		dc_link_blank_all_dp_displays(dc);
-- 
2.35.1