drm/i915: Fix max link rate in intel_dp_mode_valid()
Consider the link rates reported by the sink via
DP_SUPPORTED_LINK_RATES when checking modes against the max link
rate.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Sonika Jindal <sonika.jindal@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 45c3568..5d8ec3a 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -206,7 +206,7 @@
target_clock = fixed_mode->clock;
}
- max_link_clock = drm_dp_bw_code_to_link_rate(intel_dp_max_link_bw(intel_dp));
+ max_link_clock = intel_dp_max_link_rate(intel_dp);
max_lanes = intel_dp_max_lane_count(intel_dp);
max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes);
@@ -1242,6 +1242,19 @@
return i;
}
+int
+intel_dp_max_link_rate(struct intel_dp *intel_dp)
+{
+ int rates[DP_MAX_SUPPORTED_RATES] = {};
+ int len;
+
+ len = intel_supported_rates(intel_dp, rates);
+ if (WARN_ON(len <= 0))
+ return 162000;
+
+ return rates[rate_to_index(0, rates) - 1];
+}
+
bool
intel_dp_compute_config(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config)