search for: drm_dp_read_downstream_info

We're going to be doing the same probing process in nouveau for determining downstream DP port capabilities, so let's deduplicate the work by moving i915's code for handling this into a shared helper: drm_dp_read_downstream_info(). Note that when we do this, we also do make some functional changes while we're at it: * We always clear the downstream port info before trying to read it, just to make things easier for the caller * We skip reading downstream port info if the DPCD indicates that we don't support dow...

...g drm/i915/dp: Extract drm_dp_read_mst_cap() drm/nouveau/kms: Use new drm_dp_read_mst_cap() helper for checking MST caps drm/nouveau/kms: Move drm_dp_cec_unset_edid() into nouveau_connector_detect() drm/nouveau/kms: Only use hpd_work for reprobing in HPD paths drm/i915/dp: Extract drm_dp_read_downstream_info() drm/nouveau/kms/nv50-: Use downstream DP clock limits for mode validation drm/i915/dp: Extract drm_dp_read_sink_count_cap() drm/i915/dp: Extract drm_dp_read_sink_count() drm/nouveau/kms/nv50-: Add support for DP_SINK_COUNT drm/nouveau/kms: Don't change EDID when it hasn't ac...

.../nouveau/nouveau_dp.c index 005750aeb6d4f..ad852e572cfec 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dp.c +++ b/drivers/gpu/drm/nouveau/nouveau_dp.c @@ -61,6 +61,11 @@ nouveau_dp_probe_dpcd(struct nouveau_connector *nv_connector, mstm->can_mst = drm_dp_read_mst_cap(aux, dpcd); } + ret = drm_dp_read_downstream_info(aux, dpcd, + outp->dp.downstream_ports); + if (ret < 0) + return connector_status_disconnected; + return connector_status_connected; } @@ -176,8 +181,6 @@ void nouveau_dp_irq(struct nouveau_drm *drm, /* TODO: * - Use the minimum possible BPC here, once we add support for the ma...