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drm/i915/psr: Check for the specific AUX_FRAME_SYNC cap bit.

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The cap check should be specifically for bit 0 instead of any bit.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Fixes: 474d1ec4a3 ("drm/i915/skl: Enabling PSR2 SU with frame sync")
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180223221520.18464-4-dhinakaran.pandiyan@intel.com
This commit is contained in:
Dhinakaran Pandiyan 2018-02-23 14:15:18 -08:00 committed by Rodrigo Vivi
parent 77fe36ff04
commit e2770e2e05
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/intel_psr.c
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@ -144,7 +144,7 @@ void intel_psr_init_dpcd(struct intel_dp *intel_dp)
DP_SINK_DEVICE_AUX_FRAME_SYNC_CAP,
&frame_sync_cap) != 1)
frame_sync_cap = 0;
dev_priv->psr.aux_frame_sync = frame_sync_cap ? true : false;
dev_priv->psr.aux_frame_sync = frame_sync_cap & DP_AUX_FRAME_SYNC_CAP;
/* PSR2 needs frame sync as well */
dev_priv->psr.psr2_support = dev_priv->psr.aux_frame_sync;
DRM_DEBUG_KMS("PSR2 %s on sink",