[PATCH 08/14] drm/i915/dp_mst: Use helpers to get dsc min/max input bpc

[Ankit Nautiyal <ankit.k.nautiyal@intel.com>]

Use helpers for source min/max input bpc with DSC.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c     |  2 --
 drivers/gpu/drm/i915/display/intel_dp.h     |  3 +++
 drivers/gpu/drm/i915/display/intel_dp_mst.c | 13 +++++--------
 3 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index edfe084dca39..bff7441d2ddd 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1780,7 +1780,6 @@ intel_dp_compute_link_config_wide(struct intel_dp *intel_dp,
 	return -EINVAL;
 }
 
-static
 int intel_dp_dsc_max_src_input_bpc(struct intel_display *display)
 {
 	/* Max DSC Input BPC for ICL is 10 and for TGL+ is 12 */
@@ -2183,7 +2182,6 @@ static int dsc_compute_compressed_bpp(struct intel_dp *intel_dp,
 					   dsc_max_bpp, dsc_min_bpp, pipe_bpp, timeslots);
 }
 
-static
 int intel_dp_dsc_min_src_input_bpc(void)
 {
 	/* Min DSC Input BPC for ICL+ is 8 */
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
index 4ae54e9718ce..4895b52d41e8 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -20,6 +20,7 @@ struct intel_atomic_state;
 struct intel_connector;
 struct intel_crtc_state;
 struct intel_digital_port;
+struct intel_display;
 struct intel_dp;
 struct intel_encoder;
 
@@ -207,5 +208,7 @@ bool intel_dp_link_params_valid(struct intel_dp *intel_dp, int link_rate,
 				u8 lane_count);
 bool intel_dp_has_connector(struct intel_dp *intel_dp,
 			    const struct drm_connector_state *conn_state);
+int intel_dp_dsc_max_src_input_bpc(struct intel_display *display);
+int intel_dp_dsc_min_src_input_bpc(void);
 
 #endif /* __INTEL_DP_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 9b64c8a0e55e..795594191717 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -365,17 +365,14 @@ static int mst_stream_dsc_compute_link_config(struct intel_dp *intel_dp,
 	int i, num_bpc;
 	u8 dsc_bpc[3] = {};
 	int min_bpp, max_bpp, sink_min_bpp, sink_max_bpp;
-	u8 dsc_max_bpc;
+	int dsc_max_bpc, dsc_min_bpc;
 	int min_compressed_bpp, max_compressed_bpp;
 
-	/* Max DSC Input BPC for ICL is 10 and for TGL+ is 12 */
-	if (DISPLAY_VER(display) >= 12)
-		dsc_max_bpc = min_t(u8, 12, conn_state->max_requested_bpc);
-	else
-		dsc_max_bpc = min_t(u8, 10, conn_state->max_requested_bpc);
+	dsc_max_bpc = intel_dp_dsc_max_src_input_bpc(display);
+	dsc_min_bpc = intel_dp_dsc_min_src_input_bpc();
 
-	max_bpp = min_t(u8, dsc_max_bpc * 3, limits->pipe.max_bpp);
-	min_bpp = limits->pipe.min_bpp;
+	max_bpp = min(dsc_max_bpc * 3, limits->pipe.max_bpp);
+	min_bpp = max(dsc_min_bpc * 3, limits->pipe.min_bpp);
 
 	num_bpc = drm_dp_dsc_sink_supported_input_bpcs(connector->dp.dsc_dpcd,
 						       dsc_bpc);
-- 
2.45.2