drm/i915/dp: Factor out intel_dp_update_sink_caps()

Factor out a function updating the sink's link rate and lane count
capabilities, used by a follow-up patch enabling the DP tunnel BW
allocation mode.

Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240220211841.448846-9-imre.deak@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 20e04cbdffcaeb489cd866503b9fd342b616c85e..520c04245c2df026d20e7564a13c128a5b66094d 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -3944,6 +3944,13 @@ intel_dp_has_sink_count(struct intel_dp *intel_dp)
                                          &intel_dp->desc);
 }
 
+void intel_dp_update_sink_caps(struct intel_dp *intel_dp)
+{
+       intel_dp_set_sink_rates(intel_dp);
+       intel_dp_set_max_sink_lane_count(intel_dp);
+       intel_dp_set_common_rates(intel_dp);
+}
+
 static bool
 intel_dp_get_dpcd(struct intel_dp *intel_dp)
 {
@@ -3960,9 +3967,7 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp)
                drm_dp_read_desc(&intel_dp->aux, &intel_dp->desc,
                                 drm_dp_is_branch(intel_dp->dpcd));
 
-               intel_dp_set_sink_rates(intel_dp);
-               intel_dp_set_max_sink_lane_count(intel_dp);
-               intel_dp_set_common_rates(intel_dp);
+               intel_dp_update_sink_caps(intel_dp);
        }
 
        if (intel_dp_has_sink_count(intel_dp)) {

diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
index ee0600b4425e11de4d283ee2f989c4648ac964cf..10e859b62bbe9e6b727a53dd40f149117c41567e 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -104,6 +104,7 @@ int intel_dp_config_required_rate(const struct intel_crtc_state *crtc_state);
 int intel_dp_rate_select(struct intel_dp *intel_dp, int rate);
 int intel_dp_max_common_rate(struct intel_dp *intel_dp);
 int intel_dp_max_common_lane_count(struct intel_dp *intel_dp);
+void intel_dp_update_sink_caps(struct intel_dp *intel_dp);
 
 void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock,
                           u8 *link_bw, u8 *rate_select);