Merge tag 'drm-misc-next-2026-01-22' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

drm-misc-next for 6.20:

Core Changes:
 - buddy: Fix free_trees memory leak, prevent a BUG_ON
 - dma-buf: Start to introduce cgroup memory accounting in heaps, Remove
   sysfs stats, add new tracepoints
 - hdmi: Limit infoframes exposure to userspace based on driver
   capabilities
 - property: Account for property blobs in memcg

Driver Changes:
 - atmel-hlcdc: Switch to drmm resources, Support nomodeset parameter,
   various patches to use newish helpers and fix memory safety bugs
 - hisilicon: Fix various DisplayPort related bugs
 - imagination: Introduce hardware version checks
 - renesas: Fix kernel panic on reboot
 - rockchip: Fix RK3576 HPD interrupt handling, Improve RK3588 HPD
   interrupt handling
 - v3d: Convert to drm logging helpers

 - bridge:
   - Continuation of the refcounting effort
   - new bridge: Algoltek AG6311

 - panel:
   - new panel: Anbernic RG-DS

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

From: Maxime Ripard <mripard@redhat.com>
Link: https://patch.msgid.link/20260122-antique-sexy-junglefowl-1bc5a8@houat

5 files changed, 197 insertions, 44 deletions

diff --git a/include/drm/bridge/inno_hdmi.h b/include/drm/bridge/inno_hdmi.h
index 8b39655212e2..5bbcaeea94e2 100644
--- a/include/drm/bridge/inno_hdmi.h
+++ b/include/drm/bridge/inno_hdmi.h
@@ -6,6 +6,8 @@
 #ifndef __INNO_HDMI__
 #define __INNO_HDMI__
 
+#include <linux/types.h>
+
 struct device;
 struct drm_encoder;
 struct drm_display_mode;
diff --git a/include/drm/bridge/samsung-dsim.h b/include/drm/bridge/samsung-dsim.h
index 31d7ed589233..03005e474704 100644
--- a/include/drm/bridge/samsung-dsim.h
+++ b/include/drm/bridge/samsung-dsim.h
@@ -100,7 +100,6 @@ struct samsung_dsim_plat_data {
 struct samsung_dsim {
 	struct mipi_dsi_host dsi_host;
 	struct drm_bridge bridge;
-	struct drm_bridge *out_bridge;
 	struct device *dev;
 	struct drm_display_mode mode;
 
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index 3e6cbfa9dc44..73c23fece792 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -785,29 +785,113 @@ struct drm_bridge_funcs {
 				     unsigned long long tmds_rate);
 
 	/**
-	 * @hdmi_clear_infoframe:
+	 * @hdmi_clear_avi_infoframe:
 	 *
 	 * This callback clears the infoframes in the hardware during commit.
-	 * It will be called multiple times, once for every disabled infoframe
-	 * type.
 	 *
 	 * This callback is optional but it must be implemented by bridges that
 	 * set the DRM_BRIDGE_OP_HDMI flag in their &drm_bridge->ops.
 	 */
-	int (*hdmi_clear_infoframe)(struct drm_bridge *bridge,
-				    enum hdmi_infoframe_type type);
+	int (*hdmi_clear_avi_infoframe)(struct drm_bridge *bridge);
+
+	/**
+	 * @hdmi_write_avi_infoframe:
+	 *
+	 * Program the infoframe into the hardware.
+	 *
+	 * This callback is optional but it must be implemented by bridges that
+	 * set the DRM_BRIDGE_OP_HDMI flag in their &drm_bridge->ops.
+	 */
+	int (*hdmi_write_avi_infoframe)(struct drm_bridge *bridge,
+					const u8 *buffer, size_t len);
+
+	/**
+	 * @hdmi_clear_hdmi_infoframe:
+	 *
+	 * This callback clears the infoframes in the hardware during commit.
+	 *
+	 * This callback is optional but it must be implemented by bridges that
+	 * set the DRM_BRIDGE_OP_HDMI flag in their &drm_bridge->ops.
+	 */
+	int (*hdmi_clear_hdmi_infoframe)(struct drm_bridge *bridge);
+
 	/**
-	 * @hdmi_write_infoframe:
+	 * @hdmi_write_hdmi_infoframe:
 	 *
-	 * Program the infoframe into the hardware. It will be called multiple
-	 * times, once for every updated infoframe type.
+	 * Program the infoframe into the hardware.
 	 *
 	 * This callback is optional but it must be implemented by bridges that
 	 * set the DRM_BRIDGE_OP_HDMI flag in their &drm_bridge->ops.
 	 */
-	int (*hdmi_write_infoframe)(struct drm_bridge *bridge,
-				    enum hdmi_infoframe_type type,
-				    const u8 *buffer, size_t len);
+	int (*hdmi_write_hdmi_infoframe)(struct drm_bridge *bridge,
+					    const u8 *buffer, size_t len);
+
+	/**
+	 * @hdmi_clear_hdr_drm_infoframe:
+	 *
+	 * This callback clears the infoframes in the hardware during commit.
+	 *
+	 * This callback is optional but it must be implemented by bridges that
+	 * set the DRM_BRIDGE_OP_HDMI_HDR_DRM_INFOFRAME flag in their
+	 * &drm_bridge->ops.
+	 */
+	int (*hdmi_clear_hdr_drm_infoframe)(struct drm_bridge *bridge);
+
+	/**
+	 * @hdmi_write_hdr_drm_infoframe:
+	 *
+	 * Program the infoframe into the hardware.
+	 *
+	 * This callback is optional but it must be implemented by bridges that
+	 * set the DRM_BRIDGE_OP_HDMI_HDR_DRM_INFOFRAME flag in their
+	 * &drm_bridge->ops.
+	 */
+	int (*hdmi_write_hdr_drm_infoframe)(struct drm_bridge *bridge,
+					const u8 *buffer, size_t len);
+
+	/**
+	 * @hdmi_clear_spd_infoframe:
+	 *
+	 * This callback clears the infoframes in the hardware during commit.
+	 *
+	 * This callback is optional but it must be implemented by bridges that
+	 * set the DRM_BRIDGE_OP_HDMI_SPD_INFOFRAME flag in their
+	 * &drm_bridge->ops.
+	 */
+	int (*hdmi_clear_spd_infoframe)(struct drm_bridge *bridge);
+
+	/**
+	 * @hdmi_write_spd_infoframe:
+	 *
+	 * Program the infoframe into the hardware.
+	 *
+	 * This callback is optional but it must be implemented by bridges that
+	 * set the DRM_BRIDGE_OP_HDMI_SPD_INFOFRAME flag in their
+	 * &drm_bridge->ops.
+	 */
+	int (*hdmi_write_spd_infoframe)(struct drm_bridge *bridge,
+					const u8 *buffer, size_t len);
+
+	/**
+	 * @hdmi_clear_audio_infoframe:
+	 *
+	 * This callback clears the infoframes in the hardware during commit.
+	 *
+	 * This callback is optional but it must be implemented by bridges that
+	 * set the DRM_BRIDGE_OP_HDMI_AUDIO flag in their &drm_bridge->ops.
+	 */
+	int (*hdmi_clear_audio_infoframe)(struct drm_bridge *bridge);
+
+	/**
+	 * @hdmi_write_audio_infoframe:
+	 *
+	 * Program the infoframe into the hardware.
+	 *
+	 * This callback is optional but it must be implemented by bridges that
+	 * set the DRM_BRIDGE_OP_HDMI_AUDIO flag in their &drm_bridge->ops.
+	 */
+	int (*hdmi_write_audio_infoframe)(struct drm_bridge *bridge,
+					  const u8 *buffer, size_t len);
 
 	/**
 	 * @hdmi_audio_startup:
@@ -1063,7 +1147,11 @@ enum drm_bridge_ops {
 	/**
 	 * @DRM_BRIDGE_OP_HDMI: The bridge provides HDMI connector operations,
 	 * including infoframes support. Bridges that set this flag must
-	 * implement the &drm_bridge_funcs->write_infoframe callback.
+	 * provide HDMI-related information and implement the
+	 * &drm_bridge_funcs->clear_avi_infoframe,
+	 * &drm_bridge_funcs->write_avi_infoframe,
+	 * &drm_bridge_funcs->clear_hdmi_infoframe and
+	 * &drm_bridge_funcs->write_hdmi_infoframe callbacks.
 	 *
 	 * Note: currently there can be at most one bridge in a chain that sets
 	 * this bit. This is to simplify corresponding glue code in connector
@@ -1075,6 +1163,9 @@ enum drm_bridge_ops {
 	 * Bridges that set this flag must implement the
 	 * &drm_bridge_funcs->hdmi_audio_prepare and
 	 * &drm_bridge_funcs->hdmi_audio_shutdown callbacks.
+	 * If the bridge implements @DRM_BRIDGE_OP_HDMI, it also must implement
+	 * &drm_bridge_funcs->hdmi_write_audio_infoframe and
+	 * &drm_bridge_funcs->hdmi_cleaer_audio_infoframe callbacks.
 	 *
 	 * Note: currently there can be at most one bridge in a chain that sets
 	 * this bit. This is to simplify corresponding glue code in connector
@@ -1106,6 +1197,18 @@ enum drm_bridge_ops {
 	 * to be present.
 	 */
 	DRM_BRIDGE_OP_HDMI_CEC_ADAPTER = BIT(8),
+	/**
+	 * @DRM_BRIDGE_OP_HDMI_HDR_DRM_INFOFRAME: The bridge supports
+	 * &drm_bridge_funcs->hdmi_write_hdr_drm_infoframe and
+	 * &drm_bridge_funcs->hdmi_clear_hdr_drm_infoframe callbacks.
+	 */
+	DRM_BRIDGE_OP_HDMI_HDR_DRM_INFOFRAME = BIT(9),
+	/**
+	 * @DRM_BRIDGE_OP_HDMI_SPD_INFOFRAME: The bridge supports
+	 * &drm_bridge_funcs->hdmi_write_spd_infoframe and
+	 * &drm_bridge_funcs->hdmi_clear_spd_infoframe callbacks.
+	 */
+	DRM_BRIDGE_OP_HDMI_SPD_INFOFRAME = BIT(10),
 };
 
 /**
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 8f34f4b8183d..7eaec37ae1c7 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1222,44 +1222,24 @@ struct drm_connector_cec_funcs {
 };
 
 /**
- * struct drm_connector_hdmi_funcs - drm_hdmi_connector control functions
+ * struct drm_connector_infoframe_funcs - InfoFrame-related functions
  */
-struct drm_connector_hdmi_funcs {
-	/**
-	 * @tmds_char_rate_valid:
-	 *
-	 * This callback is invoked at atomic_check time to figure out
-	 * whether a particular TMDS character rate is supported by the
-	 * driver.
-	 *
-	 * The @tmds_char_rate_valid callback is optional.
-	 *
-	 * Returns:
-	 *
-	 * Either &drm_mode_status.MODE_OK or one of the failure reasons
-	 * in &enum drm_mode_status.
-	 */
-	enum drm_mode_status
-	(*tmds_char_rate_valid)(const struct drm_connector *connector,
-				const struct drm_display_mode *mode,
-				unsigned long long tmds_rate);
-
+struct drm_connector_infoframe_funcs {
 	/**
 	 * @clear_infoframe:
 	 *
 	 * This callback is invoked through
 	 * @drm_atomic_helper_connector_hdmi_update_infoframes during a
 	 * commit to clear the infoframes into the hardware. It will be
-	 * called multiple times, once for every disabled infoframe
-	 * type.
+	 * called once for each frame type to be disabled.
 	 *
-	 * The @clear_infoframe callback is optional.
+	 * The @clear_infoframe callback is mandatory for AVI and HDMI-VS
+	 * InfoFrame types.
 	 *
 	 * Returns:
 	 * 0 on success, a negative error code otherwise
 	 */
-	int (*clear_infoframe)(struct drm_connector *connector,
-			       enum hdmi_infoframe_type type);
+	int (*clear_infoframe)(struct drm_connector *connector);
 
 	/**
 	 * @write_infoframe:
@@ -1267,18 +1247,42 @@ struct drm_connector_hdmi_funcs {
 	 * This callback is invoked through
 	 * @drm_atomic_helper_connector_hdmi_update_infoframes during a
 	 * commit to program the infoframes into the hardware. It will
-	 * be called multiple times, once for every updated infoframe
-	 * type.
+	 * be called for every updated infoframe type.
 	 *
-	 * The @write_infoframe callback is mandatory.
+	 * The @write_infoframe callback is mandatory for AVI and HDMI-VS
+	 * InfoFrame types.
 	 *
 	 * Returns:
 	 * 0 on success, a negative error code otherwise
 	 */
 	int (*write_infoframe)(struct drm_connector *connector,
-			       enum hdmi_infoframe_type type,
 			       const u8 *buffer, size_t len);
 
+};
+
+/**
+ * struct drm_connector_hdmi_funcs - drm_hdmi_connector control functions
+ */
+struct drm_connector_hdmi_funcs {
+	/**
+	 * @tmds_char_rate_valid:
+	 *
+	 * This callback is invoked at atomic_check time to figure out
+	 * whether a particular TMDS character rate is supported by the
+	 * driver.
+	 *
+	 * The @tmds_char_rate_valid callback is optional.
+	 *
+	 * Returns:
+	 *
+	 * Either &drm_mode_status.MODE_OK or one of the failure reasons
+	 * in &enum drm_mode_status.
+	 */
+	enum drm_mode_status
+	(*tmds_char_rate_valid)(const struct drm_connector *connector,
+				const struct drm_display_mode *mode,
+				unsigned long long tmds_rate);
+
 	/**
 	 * @read_edid:
 	 *
@@ -1293,6 +1297,47 @@ struct drm_connector_hdmi_funcs {
 	 * Valid EDID on success, NULL in case of failure.
 	 */
 	const struct drm_edid *(*read_edid)(struct drm_connector *connector);
+
+	/**
+	 * @avi:
+	 *
+	 * Set of callbacks for handling the AVI InfoFrame. These callbacks are
+	 * mandatory.
+	 */
+	struct drm_connector_infoframe_funcs avi;
+
+	/**
+	 * @hdmi:
+	 *
+	 * Set of callbacks for handling the HDMI Vendor-Specific InfoFrame.
+	 * These callbacks are mandatory.
+	 */
+	struct drm_connector_infoframe_funcs hdmi;
+
+	/**
+	 * @audio:
+	 *
+	 * Set of callbacks for handling the Audio InfoFrame. These callbacks
+	 * are optional, but they are required for drivers which use
+	 * drm_atomic_helper_connector_hdmi_update_audio_infoframe().
+	 */
+	struct drm_connector_infoframe_funcs audio;
+
+	/**
+	 * @hdr_drm:
+	 *
+	 * Set of callbacks for handling the HDR DRM InfoFrame. These callbacks
+	 * are mandatory if HDR output is to be supported.
+	 */
+	struct drm_connector_infoframe_funcs hdr_drm;
+
+	/**
+	 * @spd:
+	 *
+	 * Set of callbacks for handling the SPD InfoFrame. These callbacks are
+	 * optional.
+	 */
+	struct drm_connector_infoframe_funcs spd;
 };
 
 /**
diff --git a/include/drm/drm_of.h b/include/drm/drm_of.h
index 7f0256dae3f1..f2f2bf82eff9 100644
--- a/include/drm/drm_of.h
+++ b/include/drm/drm_of.h
@@ -5,6 +5,7 @@
 #include <linux/err.h>
 #include <linux/of_graph.h>
 #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE)
+#include <linux/of.h>
 #include <drm/drm_bridge.h>
 #endif
 
@@ -170,9 +171,12 @@ static inline int drm_of_panel_bridge_remove(const struct device_node *np,
 	if (!remote)
 		return -ENODEV;
 
-	bridge = of_drm_find_bridge(remote);
+	bridge = of_drm_find_and_get_bridge(remote);
 	drm_panel_bridge_remove(bridge);
 
+	drm_bridge_put(bridge);
+	of_node_put(remote);
+
 	return 0;
 #else
 	return -EINVAL;