Merge tag 'drm-misc-next-2024-03-28' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

Two misc-next in one.

drm-misc-next for v6.10-rc1:

The deal of a lifetime! You get ALL of the previous
drm-misc-next-2024-03-21-1 tag!!

But WAIT, there's MORE!

Cross-subsystem Changes:
- Assorted DT binding updates.

Core Changes:
- Clarify how optional wait_hpd_asserted is.
- Shuffle Kconfig names around.

Driver Changes:
- Assorted build fixes for panthor, imagination,
- Add AUO B120XAN01.0 panels.
- Assorted small fixes to panthor, panfrost.

drm-misc-next for v6.10:
UAPI Changes:
- Move some nouveau magic constants to uapi.

Cross-subsystem Changes:
- Move drm-misc to gitlab and freedesktop hosting.
- Add entries for panfrost.

Core Changes:
- Improve placement for TTM bo's in idle/busy handling.
- Improve drm/bridge init ordering.
- Add CONFIG_DRM_WERROR, and use W=1 for drm.
- Assorted documentation updates.
- Make more (drm and driver) headers self-contained and add header
  guards.
- Grab reservation lock in pin/unpin callbacks.
- Fix reservation lock handling for vmap.
- Add edp and edid panel matching, use it to fix a nearly identical
  panel.

Driver Changes:
- Add drm/panthor driver and assorted fixes.
- Assorted small fixes to xlnx, panel-edp, tidss, ci, nouveau,
  panel and bridge drivers.
- Add Samsung s6e3fa7, BOE NT116WHM-N44, CMN N116BCA-EA1,
  CrystalClear CMT430B19N00, Startek KD050HDFIA020-C020A,
  powertip PH128800T006-ZHC01 panels.
- Fix console for omapdrm.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/bea310a6-6ff6-477e-9363-f9f053cfd12a@linux.intel.com

2 files changed, 13 insertions, 3 deletions

diff --git a/include/drm/display/drm_dp_helper.h b/include/drm/display/drm_dp_helper.h
index a62fcd051d4d..f3a28af7c1b6 100644
--- a/include/drm/display/drm_dp_helper.h
+++ b/include/drm/display/drm_dp_helper.h
@@ -422,7 +422,18 @@ struct drm_dp_aux {
 	 * @wait_hpd_asserted: wait for HPD to be asserted
 	 *
 	 * This is mainly useful for eDP panels drivers to wait for an eDP
-	 * panel to finish powering on. This is an optional function.
+	 * panel to finish powering on. It is optional for DP AUX controllers
+	 * to implement this function. It is required for DP AUX endpoints
+	 * (panel drivers) to call this function after powering up but before
+	 * doing AUX transfers unless the DP AUX endpoint driver knows that
+	 * we're not using the AUX controller's HPD. One example of the panel
+	 * driver not needing to call this is if HPD is hooked up to a GPIO
+	 * that the panel driver can read directly.
+	 *
+	 * If a DP AUX controller does not implement this function then it
+	 * may still support eDP panels that use the AUX controller's built-in
+	 * HPD signal by implementing a long wait for HPD in the transfer()
+	 * callback, though this is deprecated.
 	 *
 	 * This function will efficiently wait for the HPD signal to be
 	 * asserted. The `wait_us` parameter that is passed in says that we
@@ -722,7 +733,7 @@ static inline int drm_panel_dp_aux_backlight(struct drm_panel *panel,
 
 #endif
 
-#ifdef CONFIG_DRM_DP_CEC
+#ifdef CONFIG_DRM_DISPLAY_DP_AUX_CEC
 void drm_dp_cec_irq(struct drm_dp_aux *aux);
 void drm_dp_cec_register_connector(struct drm_dp_aux *aux,
 				   struct drm_connector *connector);
diff --git a/include/drm/display/drm_dp_mst_helper.h b/include/drm/display/drm_dp_mst_helper.h
index 9b19d8bd520a..3ae88a383a41 100644
--- a/include/drm/display/drm_dp_mst_helper.h
+++ b/include/drm/display/drm_dp_mst_helper.h
@@ -83,7 +83,6 @@ struct drm_dp_mst_branch;
  * @passthrough_aux: parent aux to which DSC pass-through requests should be
  * sent, only set if DSC pass-through is possible.
  * @parent: branch device parent of this port
- * @vcpi: Virtual Channel Payload info for this port.
  * @connector: DRM connector this port is connected to. Protected by
  * &drm_dp_mst_topology_mgr.base.lock.
  * @mgr: topology manager this port lives under.