diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_drv.h | 4 |
2 files changed, 12 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index db75bb924e48..434dc7d4773a 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -156,7 +156,7 @@ static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) u8 source_max, sink_max; source_max = intel_dig_port->max_lanes; - sink_max = drm_dp_max_lane_count(intel_dp->dpcd); + sink_max = intel_dp->max_sink_lane_count; return min(source_max, sink_max); } @@ -213,7 +213,7 @@ intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates) *sink_rates = default_rates; - return (intel_dp_max_link_bw(intel_dp) >> 3) + 1; + return (intel_dp->max_sink_link_bw >> 3) + 1; } static int @@ -4395,6 +4395,12 @@ intel_dp_long_pulse(struct intel_connector *intel_connector) yesno(intel_dp_source_supports_hbr2(intel_dp)), yesno(drm_dp_tps3_supported(intel_dp->dpcd))); + /* Set the max lane count for sink */ + intel_dp->max_sink_lane_count = drm_dp_max_lane_count(intel_dp->dpcd); + + /* Set the max link BW for sink */ + intel_dp->max_sink_link_bw = intel_dp_max_link_bw(intel_dp); + intel_dp_print_rates(intel_dp); intel_dp_read_desc(intel_dp); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 223d44c4aa93..8e5f2a1e75d8 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -906,6 +906,10 @@ struct intel_dp { /* sink rates as reported by DP_SUPPORTED_LINK_RATES */ uint8_t num_sink_rates; int sink_rates[DP_MAX_SUPPORTED_RATES]; + /* Max lane count for the sink as per DPCD registers */ + uint8_t max_sink_lane_count; + /* Max link BW for the sink as per DPCD registers */ + int max_sink_link_bw; /* sink or branch descriptor */ struct intel_dp_desc desc; struct drm_dp_aux aux; |