[PATCH 034/108] drm/i915/dp_link_training: Use helpers to get forced link params

[Imre Deak <imre.deak@intel.com>]

Use intel_dp_link_caps_get_forced_params() in the link training fallback
code instead of directly accessing the state. This allows the link caps
module to track changes to forced parameters internally.

Signed-off-by: Imre Deak <imre.deak@intel.com>
---
 .../drm/i915/display/intel_dp_link_training.c | 26 ++++++++++++++-----
 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
index 3455e4daf1faf..5218220b82b0b 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -1760,18 +1760,26 @@ static bool reduce_link_params_in_bw_order(struct intel_dp *intel_dp,
 					   const struct intel_crtc_state *crtc_state,
 					   int *new_link_rate, int *new_lane_count)
 {
+	struct intel_dp_link_caps *link_caps = intel_dp->link.caps;
+	struct intel_dp_link_config forced_params;
+	int forced_lane_count;
+	int forced_rate;
 	int link_rate;
 	int lane_count;
 	int i;
 
+	intel_dp_link_caps_get_forced_params(link_caps, &forced_params);
+	forced_rate = forced_params.rate;
+	forced_lane_count = forced_params.lane_count;
+
 	i = intel_dp_link_config_index(intel_dp, crtc_state->port_clock, crtc_state->lane_count);
 	for (i--; i >= 0; i--) {
 		intel_dp_link_config_get(intel_dp, i, &link_rate, &lane_count);
 
-		if ((intel_dp->link.force_rate &&
-		     intel_dp->link.force_rate != link_rate) ||
-		    (intel_dp->link.force_lane_count &&
-		     intel_dp->link.force_lane_count != lane_count))
+		if ((forced_rate &&
+		     forced_rate != link_rate) ||
+		    (forced_lane_count &&
+		     forced_lane_count != lane_count))
 			continue;
 
 		break;
@@ -1788,10 +1796,13 @@ static bool reduce_link_params_in_bw_order(struct intel_dp *intel_dp,
 
 static int reduce_link_rate(struct intel_dp *intel_dp, int current_rate)
 {
+	struct intel_dp_link_caps *link_caps = intel_dp->link.caps;
+	struct intel_dp_link_config forced_params;
 	int rate_index;
 	int new_rate;
 
-	if (intel_dp->link.force_rate)
+	intel_dp_link_caps_get_forced_params(link_caps, &forced_params);
+	if (forced_params.rate)
 		return -1;
 
 	rate_index = intel_dp_rate_index(intel_dp->common_rates,
@@ -1812,7 +1823,10 @@ static int reduce_link_rate(struct intel_dp *intel_dp, int current_rate)
 
 static int reduce_lane_count(struct intel_dp *intel_dp, int current_lane_count)
 {
-	if (intel_dp->link.force_lane_count)
+	struct intel_dp_link_config forced_params;
+
+	intel_dp_link_caps_get_forced_params(intel_dp->link.caps, &forced_params);
+	if (forced_params.lane_count)
 		return -1;
 
 	if (current_lane_count == 1)
-- 
2.49.1