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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>
This commit is contained in:
Ville Syrjälä 2015-03-12 17:10:34 +02:00 committed by Daniel Vetter
parent 2ecae76ad6
commit 50fec21a7d
2 changed files with 15 additions and 1 deletions
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15
drivers/gpu/drm/i915/intel_dp.c
View File

@ -206,7 +206,7 @@ intel_dp_mode_valid(struct drm_connector *connector,
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 @@ static int rate_to_index(int find, const int *rates)
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)

1
drivers/gpu/drm/i915/intel_drv.h
View File

@ -1062,6 +1062,7 @@ void intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *co
void intel_dp_mst_suspend(struct drm_device *dev);
void intel_dp_mst_resume(struct drm_device *dev);
int intel_dp_max_link_bw(struct intel_dp *intel_dp);
int intel_dp_max_link_rate(struct intel_dp *intel_dp);
void intel_dp_hot_plug(struct intel_encoder *intel_encoder);
void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv);
uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes);