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drm/amd/powerplay/smu7: allow mclk switching with no displays

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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
This commit is contained in:
Alex Deucher 2018-02-13 14:26:54 -05:00
commit 51954e1791
1 changed files with 7 additions and 4 deletions
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11
drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
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@ -2756,10 +2756,13 @@ static int smu7_apply_state_adjust_rules(struct pp_hwmgr *hwmgr,
PHM_PlatformCaps_DisableMclkSwitchingForFrameLock);
disable_mclk_switching = ((1 < info.display_count) ||
disable_mclk_switching_for_frame_lock ||
smu7_vblank_too_short(hwmgr, mode_info.vblank_time_us) ||
(mode_info.refresh_rate > 120));
if (info.display_count == 0)
disable_mclk_switching = false;
else
disable_mclk_switching = ((1 < info.display_count) ||
disable_mclk_switching_for_frame_lock ||
smu7_vblank_too_short(hwmgr, mode_info.vblank_time_us) ||
(mode_info.refresh_rate > 120));
sclk = smu7_ps->performance_levels[0].engine_clock;
mclk = smu7_ps->performance_levels[0].memory_clock;