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drm/i915/psr: CAN_PSR() macro to check for PSR source and sink support.
The global variable dev_priv->psr.sink_support is set if an eDP sink supports PSR. Use this instead of redoing the check with is_edp_psr(). Combine source and sink support checks into a macro that can be used to return early from psr_{invalidate, single_frame_update, flush}. Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180103213824.1405-2-dhinakaran.pandiyan@intel.com
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Dhinakaran Pandiyan
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Rodrigo Vivi
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Jan 12, 2018
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