Merge tag 'drm-misc-next-2022-04-21' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.19-rc1

UAPI Changes:

Cross-subsystem Changes:
  - of: Create a platform_device for offb

Core Changes:
  - edid: block read refactoring
  - ttm: Add common debugfs code for resource managers

Driver Changes:
  - bridges:
    - adv7611: Enable DRM_BRIDGE_OP_HPD if there's an interrupt
    - anx7625: Fill ELD if no monitor is connected
    - dw_hdmi: Add General Parallel Audio support
    - icn6211: Add data-lanes DT property
    - new driver: Lontium LT9211
  - nouveau: make some structures static
  - tidss: Reset DISPC on startup
  - solomon: SPI Support and DT bindings improvements

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

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220421065948.2pyp3j7acxtl6pz5@houat

1 files changed, 64 insertions, 19 deletions

diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index a16b74f32aa9..176ed71d20c0 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -507,7 +507,6 @@ int of_platform_default_populate(struct device_node *root,
 }
 EXPORT_SYMBOL_GPL(of_platform_default_populate);
 
-#ifndef CONFIG_PPC
 static const struct of_device_id reserved_mem_matches[] = {
 	{ .compatible = "qcom,rmtfs-mem" },
 	{ .compatible = "qcom,cmd-db" },
@@ -527,26 +526,73 @@ static int __init of_platform_default_populate_init(void)
 	if (!of_have_populated_dt())
 		return -ENODEV;
 
-	/*
-	 * Handle certain compatibles explicitly, since we don't want to create
-	 * platform_devices for every node in /reserved-memory with a
-	 * "compatible",
-	 */
-	for_each_matching_node(node, reserved_mem_matches)
-		of_platform_device_create(node, NULL, NULL);
+	if (IS_ENABLED(CONFIG_PPC)) {
+		struct device_node *boot_display = NULL;
+		struct platform_device *dev;
+		int ret;
+
+		/* Check if we have a MacOS display without a node spec */
+		if (of_get_property(of_chosen, "linux,bootx-noscreen", NULL)) {
+			/*
+			 * The old code tried to work out which node was the MacOS
+			 * display based on the address. I'm dropping that since the
+			 * lack of a node spec only happens with old BootX versions
+			 * (users can update) and with this code, they'll still get
+			 * a display (just not the palette hacks).
+			 */
+			dev = platform_device_alloc("bootx-noscreen", 0);
+			if (WARN_ON(!dev))
+				return -ENOMEM;
+			ret = platform_device_add(dev);
+			if (WARN_ON(ret)) {
+				platform_device_put(dev);
+				return ret;
+			}
+		}
 
-	node = of_find_node_by_path("/firmware");
-	if (node) {
-		of_platform_populate(node, NULL, NULL, NULL);
-		of_node_put(node);
-	}
+		/*
+		 * For OF framebuffers, first create the device for the boot display,
+		 * then for the other framebuffers. Only fail for the boot display;
+		 * ignore errors for the rest.
+		 */
+		for_each_node_by_type(node, "display") {
+			if (!of_get_property(node, "linux,opened", NULL) ||
+			    !of_get_property(node, "linux,boot-display", NULL))
+				continue;
+			dev = of_platform_device_create(node, "of-display", NULL);
+			if (WARN_ON(!dev))
+				return -ENOMEM;
+			boot_display = node;
+			break;
+		}
+		for_each_node_by_type(node, "display") {
+			if (!of_get_property(node, "linux,opened", NULL) || node == boot_display)
+				continue;
+			of_platform_device_create(node, "of-display", NULL);
+		}
 
-	node = of_get_compatible_child(of_chosen, "simple-framebuffer");
-	of_platform_device_create(node, NULL, NULL);
-	of_node_put(node);
+	} else {
+		/*
+		 * Handle certain compatibles explicitly, since we don't want to create
+		 * platform_devices for every node in /reserved-memory with a
+		 * "compatible",
+		 */
+		for_each_matching_node(node, reserved_mem_matches)
+			of_platform_device_create(node, NULL, NULL);
+
+		node = of_find_node_by_path("/firmware");
+		if (node) {
+			of_platform_populate(node, NULL, NULL, NULL);
+			of_node_put(node);
+		}
 
-	/* Populate everything else. */
-	of_platform_default_populate(NULL, NULL, NULL);
+		node = of_get_compatible_child(of_chosen, "simple-framebuffer");
+		of_platform_device_create(node, NULL, NULL);
+		of_node_put(node);
+
+		/* Populate everything else. */
+		of_platform_default_populate(NULL, NULL, NULL);
+	}
 
 	return 0;
 }
@@ -558,7 +604,6 @@ static int __init of_platform_sync_state_init(void)
 	return 0;
 }
 late_initcall_sync(of_platform_sync_state_init);
-#endif
 
 int of_platform_device_destroy(struct device *dev, void *data)
 {