Add a wrapper function to check if both the source and
sink support Adaptive Sync SDP.

--v1:
Just use drm/i915/dp in subject line.

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.gol...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 8 ++++++++
 drivers/gpu/drm/i915/display/intel_dp.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c 
b/drivers/gpu/drm/i915/display/intel_dp.c
index 7cf849015797..b26efce4a041 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -120,6 +120,14 @@ bool intel_dp_is_edp(struct intel_dp *intel_dp)
        return dig_port->base.type == INTEL_OUTPUT_EDP;
 }
 
+bool intel_dp_as_sdp_supported(struct intel_dp *intel_dp)
+{
+       struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+       return HAS_AS_SDP(i915) &&
+               drm_dp_as_sdp_supported(&intel_dp->aux, intel_dp->dpcd);
+}
+
 static void intel_dp_unset_edid(struct intel_dp *intel_dp);
 
 /* Is link rate UHBR and thus 128b/132b? */
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h 
b/drivers/gpu/drm/i915/display/intel_dp.h
index 530cc97bc42f..cc5e069091ff 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -80,6 +80,7 @@ void intel_dp_audio_compute_config(struct intel_encoder 
*encoder,
                                   struct drm_connector_state *conn_state);
 bool intel_dp_has_hdmi_sink(struct intel_dp *intel_dp);
 bool intel_dp_is_edp(struct intel_dp *intel_dp);
+bool intel_dp_as_sdp_supported(struct intel_dp *intel_dp);
 bool intel_dp_is_uhbr(const struct intel_crtc_state *crtc_state);
 int intel_dp_link_symbol_size(int rate);
 int intel_dp_link_symbol_clock(int rate);
-- 
2.25.1

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