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drm/amd/powerplay/vega10: allow mclk switching with no displays

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commit 5825acf5c958a6820b04e9811caeb2f5e572bcd8 upstream.

If there are no displays attached, there is no reason to disable
mclk switching.

Fixes mclks getting set to high when there are no displays attached.

Reviewed-by: Eric Huang <JinhuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alex Deucher 2018-02-13 14:25:11 -05:00 committed by Greg Kroah-Hartman
parent 396ff36876
commit cfc381d215
1 changed files with 7 additions and 4 deletions
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11
drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
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@ -3243,10 +3243,13 @@ static int vega10_apply_state_adjust_rules(struct pp_hwmgr *hwmgr,
force_mclk_high = phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
PHM_PlatformCaps_ForceMclkHigh);
disable_mclk_switching = (info.display_count > 1) ||
disable_mclk_switching_for_frame_lock ||
disable_mclk_switching_for_vr ||
force_mclk_high;
if (info.display_count == 0)
disable_mclk_switching = false;
else
disable_mclk_switching = (info.display_count > 1) ||
disable_mclk_switching_for_frame_lock ||
disable_mclk_switching_for_vr ||
force_mclk_high;
sclk = vega10_ps->performance_levels[0].gfx_clock;
mclk = vega10_ps->performance_levels[0].mem_clock;