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drm/amd/display: Enable power gating before init_pipes

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[Why]
In init_hw() we call init_pipes() before enabling power gating.
init_pipes() tries to power gate dsc but it may fail because
required force-ons are not released yet.
As a result with dsc config the following errors observed on resume:
"REG_WAIT timeout 1us * 1000 tries - dcn20_dsc_pg_control"
"REG_WAIT timeout 1us * 1000 tries - dcn20_dpp_pg_control"
"REG_WAIT timeout 1us * 1000 tries - dcn20_hubp_pg_control"

[How]
Move enable_power_gating_plane() before init_pipes() in init_hw()

Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Eric Yang <Eric.Yang2@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Roman Li <Roman.Li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Roman Li 2022-03-15 16:31:14 -04:00 committed by Alex Deucher
parent 9570720340
commit 58e16c752e
3 changed files with 9 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
View file

@ -1500,6 +1500,9 @@ void dcn10_init_hw(struct dc *dc)
/* we want to turn off all dp displays before doing detection */
dc_link_blank_all_dp_displays(dc);
if (hws->funcs.enable_power_gating_plane)
hws->funcs.enable_power_gating_plane(dc->hwseq, true);
/* If taking control over from VBIOS, we may want to optimize our first
* mode set, so we need to skip powering down pipes until we know which
* pipes we want to use.
@ -1552,8 +1555,6 @@ void dcn10_init_hw(struct dc *dc)
REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0);
}
if (hws->funcs.enable_power_gating_plane)
hws->funcs.enable_power_gating_plane(dc->hwseq, true);
if (dc->clk_mgr->funcs->notify_wm_ranges)
dc->clk_mgr->funcs->notify_wm_ranges(dc->clk_mgr);

5
drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
View file

@ -547,6 +547,9 @@ void dcn30_init_hw(struct dc *dc)
/* we want to turn off all dp displays before doing detection */
dc_link_blank_all_dp_displays(dc);
if (hws->funcs.enable_power_gating_plane)
hws->funcs.enable_power_gating_plane(dc->hwseq, true);
/* If taking control over from VBIOS, we may want to optimize our first
* mode set, so we need to skip powering down pipes until we know which
* pipes we want to use.
@ -624,8 +627,6 @@ void dcn30_init_hw(struct dc *dc)
REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0);
}
if (hws->funcs.enable_power_gating_plane)
hws->funcs.enable_power_gating_plane(dc->hwseq, true);
if (!dcb->funcs->is_accelerated_mode(dcb) && dc->res_pool->hubbub->funcs->init_watermarks)
dc->res_pool->hubbub->funcs->init_watermarks(dc->res_pool->hubbub);

5
drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
View file

@ -199,6 +199,9 @@ void dcn31_init_hw(struct dc *dc)
/* we want to turn off all dp displays before doing detection */
dc_link_blank_all_dp_displays(dc);
if (hws->funcs.enable_power_gating_plane)
hws->funcs.enable_power_gating_plane(dc->hwseq, true);
/* If taking control over from VBIOS, we may want to optimize our first
* mode set, so we need to skip powering down pipes until we know which
* pipes we want to use.
@ -248,8 +251,6 @@ void dcn31_init_hw(struct dc *dc)
REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0);
}
if (hws->funcs.enable_power_gating_plane)
hws->funcs.enable_power_gating_plane(dc->hwseq, true);
if (!dcb->funcs->is_accelerated_mode(dcb) && dc->res_pool->hubbub->funcs->init_watermarks)
dc->res_pool->hubbub->funcs->init_watermarks(dc->res_pool->hubbub);