[Intel-gfx] [v4.1 07/16] drm/i915/dsc: make DSC source support helper generic

[Jani Nikula]

Move intel_dp_source_supports_dsc() from intel_dp.c as
intel_dsc_source_support() in intel_vdsc.c. The DSC source support is
more about DSC than about DP, and will be needed for DP independent
code.

Cc: Manasi Navare <manasi.d.navare at intel.com>
Cc: Vandita Kulkarni <vandita.kulkarni at intel.com>
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c   | 27 +++++------------------
 drivers/gpu/drm/i915/display/intel_vdsc.c | 19 ++++++++++++++++
 drivers/gpu/drm/i915/display/intel_vdsc.h |  2 ++
 3 files changed, 26 insertions(+), 22 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index f7e618ec6fa3..2f31d226c6eb 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1889,32 +1889,15 @@ static bool intel_dp_supports_fec(struct intel_dp *intel_dp,
 		drm_dp_sink_supports_fec(intel_dp->fec_capable);
 }
 
-static bool intel_dp_source_supports_dsc(struct intel_dp *intel_dp,
-					 const struct intel_crtc_state *pipe_config)
-{
-	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
-
-	if (!INTEL_INFO(dev_priv)->display.has_dsc)
-		return false;
-
-	/* On TGL, DSC is supported on all Pipes */
-	if (INTEL_GEN(dev_priv) >= 12)
-		return true;
-
-	if (INTEL_GEN(dev_priv) >= 10 &&
-	    pipe_config->cpu_transcoder != TRANSCODER_A)
-		return true;
-
-	return false;
-}
-
 static bool intel_dp_supports_dsc(struct intel_dp *intel_dp,
-				  const struct intel_crtc_state *pipe_config)
+				  const struct intel_crtc_state *crtc_state)
 {
-	if (!intel_dp_is_edp(intel_dp) && !pipe_config->fec_enable)
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+
+	if (!intel_dp_is_edp(intel_dp) && !crtc_state->fec_enable)
 		return false;
 
-	return intel_dp_source_supports_dsc(intel_dp, pipe_config) &&
+	return intel_dsc_source_support(encoder, crtc_state) &&
 		drm_dp_sink_supports_dsc(intel_dp->dsc_dpcd);
 }
 
diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c
index 7bd727129a8f..a1b0f7cf1a96 100644
--- a/drivers/gpu/drm/i915/display/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
@@ -334,6 +334,25 @@ static const struct rc_parameters *get_rc_params(u16 compressed_bpp,
 	return &rc_parameters[row_index][column_index];
 }
 
+bool intel_dsc_source_support(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+
+	if (!INTEL_INFO(i915)->display.has_dsc)
+		return false;
+
+	/* On TGL, DSC is supported on all Pipes */
+	if (INTEL_GEN(i915) >= 12)
+		return true;
+
+	if (INTEL_GEN(i915) >= 10 &&
+	    crtc_state->cpu_transcoder != TRANSCODER_A)
+		return true;
+
+	return false;
+}
+
 int intel_dsc_compute_params(struct intel_encoder *encoder,
 			     struct intel_crtc_state *pipe_config)
 {
diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.h b/drivers/gpu/drm/i915/display/intel_vdsc.h
index 4ed2256750c3..e6e9f5b5c6ff 100644
--- a/drivers/gpu/drm/i915/display/intel_vdsc.h
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.h
@@ -9,6 +9,8 @@
 struct intel_encoder;
 struct intel_crtc_state;
 
+bool intel_dsc_source_support(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state);
 void intel_dsc_enable(struct intel_encoder *encoder,
 		      const struct intel_crtc_state *crtc_state);
 void intel_dsc_disable(const struct intel_crtc_state *crtc_state);
-- 
2.20.1