linux-kernel - [PATCH v3 1/3] of: Move simple-framebuffer device handling from simplefb to of

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Date:   Sun, 12 Dec 2021 15:24:05 +0900
From:   Hector Martin <marcan@...can.st>
To:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>
Cc:     Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Javier Martinez Canillas <javier@...hile0.org>,
        Pekka Paalanen <ppaalanen@...il.com>,
        devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Hector Martin <marcan@...can.st>
Subject: [PATCH v3 1/3] of: Move simple-framebuffer device handling from simplefb to of

This code is required for both simplefb and simpledrm, so let's move it
into the OF core instead of having it as an ad-hoc initcall in the
drivers.

Acked-by: Thomas Zimmermann <tzimmermann@...e.de>
Signed-off-by: Hector Martin <marcan@...can.st>
---
 drivers/of/platform.c          |  4 ++++
 drivers/video/fbdev/simplefb.c | 21 +--------------------
 2 files changed, 5 insertions(+), 20 deletions(-)

diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index b3faf89744aa..793350028906 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -540,6 +540,10 @@ static int __init of_platform_default_populate_init(void)
 		of_node_put(node);
 	}
 
+	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);
 
diff --git a/drivers/video/fbdev/simplefb.c b/drivers/video/fbdev/simplefb.c
index b63074fd892e..57541887188b 100644
--- a/drivers/video/fbdev/simplefb.c
+++ b/drivers/video/fbdev/simplefb.c
@@ -541,26 +541,7 @@ static struct platform_driver simplefb_driver = {
 	.remove = simplefb_remove,
 };
 
-static int __init simplefb_init(void)
-{
-	int ret;
-	struct device_node *np;
-
-	ret = platform_driver_register(&simplefb_driver);
-	if (ret)
-		return ret;
-
-	if (IS_ENABLED(CONFIG_OF_ADDRESS) && of_chosen) {
-		for_each_child_of_node(of_chosen, np) {
-			if (of_device_is_compatible(np, "simple-framebuffer"))
-				of_platform_device_create(np, NULL, NULL);
-		}
-	}
-
-	return 0;
-}
-
-fs_initcall(simplefb_init);
+module_platform_driver(simplefb_driver);
 
 MODULE_AUTHOR("Stephen Warren <swarren@...dotorg.org>");
 MODULE_DESCRIPTION("Simple framebuffer driver");
-- 
2.33.0