drm/amd/display: Round KHz up when calculating clock requests

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[Why]
When requesting clocks from SMU which takes MHz inputs, DC will round
down KHz when converting to MHz, thus potentially requesting too low a
clock value.

[How]
Round up (ceil) when converting KHz to MHz for clock requests to SMU.

Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Aric Cyr 2021-06-21 12:01:45 -04:00 • committed by Alex Deucher

parent cc590fd271

commit babbdf5b3a

8 changed files with 52 additions and 42 deletions

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12

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn10/rv1_clk_mgr.c

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4

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn10/rv1_clk_mgr_vbios_smu.c

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12

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c

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16

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c

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25

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn30/dcn30_clk_mgr.c

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10

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/dcn301_smu.c

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10

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_smu.c

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5

drivers/gpu/drm/amd/display/dc/inc/hw/clk_mgr_internal.h

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