Merge tag 'drm-misc-next-2026-05-21' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

drm-misc-next for v7.2-rc1:

UAPI Changes:
- Add VIRTIO_GPU_F_BLOB_ALIGNMENT flag.

Cross-subsystem Changes:
- Add common TMDS character rate constants to video/hdmi and use those
  in bridge drivers.

Core Changes:
- Fix leak in drm_syncobj_find_fence.
- Fix OOB reads related to DP-MST.
- Create drm_get_bridge_by_endpoint and convert drivers to use it in
  preparation of hotplug.

Driver Changes:
- Assorted bugfixes and cleanups to accel/ethosu, imagination, virtio,
  rockchip.
- Expandable device heap support to amdxdna, bridge/chipone-icn6211.
- Add Surface Pro 12 panels.
- Convert ite-it6211 to use drm hdmi audio helpers.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patch.msgid.link/f4034e3c-8290-49e1-9410-dc1f449265f4@linux.intel.com

4 files changed, 23 insertions, 0 deletions

diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index fdac9a526f38..4ba3a5deef9a 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -1327,6 +1327,8 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
 #ifdef CONFIG_OF
 struct drm_bridge *of_drm_find_and_get_bridge(struct device_node *np);
 struct drm_bridge *of_drm_find_bridge(struct device_node *np);
+struct drm_bridge *of_drm_get_bridge_by_endpoint(const struct device_node *np,
+						 int port, int endpoint);
 #else
 static inline struct drm_bridge *of_drm_find_and_get_bridge(struct device_node *np)
 {
@@ -1336,6 +1338,11 @@ static inline struct drm_bridge *of_drm_find_bridge(struct device_node *np)
 {
 	return NULL;
 }
+static inline struct drm_bridge *of_drm_get_bridge_by_endpoint(const struct device_node *np,
+							       int port, int endpoint)
+{
+	return ERR_PTR(-ENODEV);
+}
 #endif
 
 static inline bool drm_bridge_is_last(struct drm_bridge *bridge)
diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h
index 96bda41d9148..8dab78e1f61b 100644
--- a/include/linux/hdmi.h
+++ b/include/linux/hdmi.h
@@ -50,6 +50,12 @@ enum hdmi_infoframe_type {
 	HDMI_INFOFRAME_TYPE_DRM = 0x87,
 };
 
+/* HDMI spec maximum TMDS character rates, in Hz */
+#define HDMI_TMDS_CHAR_RATE_MIN_HZ         25000000
+#define HDMI_1_0_TMDS_CHAR_RATE_MAX_HZ    165000000
+#define HDMI_1_3_TMDS_CHAR_RATE_MAX_HZ    340000000
+#define HDMI_2_0_TMDS_CHAR_RATE_MAX_HZ    600000000
+
 #define HDMI_IEEE_OUI 0x000c03
 #define HDMI_FORUM_IEEE_OUI 0xc45dd8
 #define HDMI_INFOFRAME_HEADER_SIZE  4
diff --git a/include/uapi/drm/virtgpu_drm.h b/include/uapi/drm/virtgpu_drm.h
index ba09a4ee3e77..95587e12aed5 100644
--- a/include/uapi/drm/virtgpu_drm.h
+++ b/include/uapi/drm/virtgpu_drm.h
@@ -98,6 +98,7 @@ struct drm_virtgpu_execbuffer {
 #define VIRTGPU_PARAM_CONTEXT_INIT 6 /* DRM_VIRTGPU_CONTEXT_INIT */
 #define VIRTGPU_PARAM_SUPPORTED_CAPSET_IDs 7 /* Bitmask of supported capability set ids */
 #define VIRTGPU_PARAM_EXPLICIT_DEBUG_NAME 8 /* Ability to set debug name from userspace */
+#define VIRTGPU_PARAM_BLOB_ALIGNMENT 9 /* Device alignment requirements for blobs */
 
 struct drm_virtgpu_getparam {
 	__u64 param;
diff --git a/include/uapi/linux/virtio_gpu.h b/include/uapi/linux/virtio_gpu.h
index be109777d10d..4f530d90058c 100644
--- a/include/uapi/linux/virtio_gpu.h
+++ b/include/uapi/linux/virtio_gpu.h
@@ -64,6 +64,14 @@
  * context_init and multiple timelines
  */
 #define VIRTIO_GPU_F_CONTEXT_INIT        4
+/*
+ * The device provides a valid blob_alignment
+ * field in its configuration and both
+ * VIRTIO_GPU_CMD_RESOURCE_CREATE_BLOB and
+ * VIRTIO_GPU_CMD_RESOURCE_MAP_BLOB requests
+ * must be aligned to that value.
+ */
+#define VIRTIO_GPU_F_BLOB_ALIGNMENT      5
 
 enum virtio_gpu_ctrl_type {
 	VIRTIO_GPU_UNDEFINED = 0,
@@ -365,6 +373,7 @@ struct virtio_gpu_config {
 	__le32 events_clear;
 	__le32 num_scanouts;
 	__le32 num_capsets;
+	__le32 blob_alignment;
 };
 
 /* simple formats for fbcon/X use */