[PATCH v2 16/28] drm/i915/dp_link_caps: Add helper to get the number of supported link rates

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

Add intel_dp_link_caps_num_common_rates() to return the number of
supported link rates tracked by the link_caps module. This prepares for
tracking these capabilities internally within the link caps module.

Signed-off-by: Imre Deak <imre.deak@intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c           | 4 ++--
 drivers/gpu/drm/i915/display/intel_dp_link_caps.c | 5 +++++
 drivers/gpu/drm/i915/display/intel_dp_link_caps.h | 1 +
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index f9c3d3561c417..84640c8394534 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1766,7 +1766,7 @@ intel_dp_compute_link_config_wide(struct intel_dp *intel_dp,
 		int link_bpp_x16 =
 			intel_dp_output_format_link_bpp_x16(pipe_config->output_format, bpp);
 
-		for (i = 0; i < intel_dp->num_common_rates; i++) {
+		for (i = 0; i < intel_dp_link_caps_num_common_rates(intel_dp->link.caps); i++) {
 			link_rate = intel_dp_common_rate(intel_dp, i);
 			if (link_rate < limits->min_rate ||
 			    link_rate > limits->max_rate)
@@ -1995,7 +1995,7 @@ static int dsc_compute_link_config(struct intel_dp *intel_dp,
 	int link_rate, lane_count;
 	int i;
 
-	for (i = 0; i < intel_dp->num_common_rates; i++) {
+	for (i = 0; i < intel_dp_link_caps_num_common_rates(intel_dp->link.caps); i++) {
 		link_rate = intel_dp_common_rate(intel_dp, i);
 		if (link_rate < limits->min_rate || link_rate > limits->max_rate)
 			continue;
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_caps.c b/drivers/gpu/drm/i915/display/intel_dp_link_caps.c
index 13f9bfd5d7bad..09b60a0cd6fbb 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_caps.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_caps.c
@@ -67,6 +67,11 @@ int intel_dp_max_common_rate(struct intel_dp *intel_dp)
 	return intel_dp_common_rate(intel_dp, intel_dp->num_common_rates - 1);
 }
 
+int intel_dp_link_caps_num_common_rates(struct intel_dp_link_caps *link_caps)
+{
+	return link_caps->dp->num_common_rates;
+}
+
 void intel_dp_link_caps_print_common_rates(struct intel_dp_link_caps *link_caps)
 {
 	struct intel_dp *intel_dp = link_caps->dp;
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_caps.h b/drivers/gpu/drm/i915/display/intel_dp_link_caps.h
index 7333df6b82f97..3413f6f760453 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_caps.h
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_caps.h
@@ -15,6 +15,7 @@ int intel_dp_common_len_rate_limit(const struct intel_dp *intel_dp,
 				   int max_rate);
 int intel_dp_common_rate(struct intel_dp *intel_dp, int index);
 int intel_dp_max_common_rate(struct intel_dp *intel_dp);
+int intel_dp_link_caps_num_common_rates(struct intel_dp_link_caps *link_caps);
 
 void intel_dp_link_caps_print_common_rates(struct intel_dp_link_caps *link_caps);
 
-- 
2.49.1