From 7b9d428e05197b589d5b770a791231cf972bd2ed Mon Sep 17 00:00:00 2001
From: Rob Herring <robh@kernel.org>
Date: Wed, 29 Apr 2020 15:58:20 -0500
Subject: mfd: vexpress-sysreg: Support building as a module

Enable building the vexpress-sysreg driver as a module.

As deferred probe between the vexpress components works now, we don't
need to create struct devices early with of_platform_device_create().

Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
---
 drivers/mfd/Kconfig           |  2 +-
 drivers/mfd/vexpress-sysreg.c | 15 ++++-----------
 2 files changed, 5 insertions(+), 12 deletions(-)

(limited to 'drivers/mfd')

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index b1311dea2da1..792766558328 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -2028,7 +2028,7 @@ config MCP_UCB1200_TS
 endmenu
 
 config MFD_VEXPRESS_SYSREG
-	bool "Versatile Express System Registers"
+	tristate "Versatile Express System Registers"
 	depends on VEXPRESS_CONFIG && GPIOLIB
 	default y
 	select GPIO_GENERIC_PLATFORM
diff --git a/drivers/mfd/vexpress-sysreg.c b/drivers/mfd/vexpress-sysreg.c
index 9fb37fa689e0..eeeeb1d26d5d 100644
--- a/drivers/mfd/vexpress-sysreg.c
+++ b/drivers/mfd/vexpress-sysreg.c
@@ -8,6 +8,7 @@
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/mfd/core.h>
+#include <linux/module.h>
 #include <linux/of_platform.h>
 #include <linux/platform_data/syscon.h>
 #include <linux/platform_device.h>
@@ -151,6 +152,7 @@ static const struct of_device_id vexpress_sysreg_match[] = {
 	{ .compatible = "arm,vexpress-sysreg", },
 	{},
 };
+MODULE_DEVICE_TABLE(of, vexpress_sysreg_match);
 
 static struct platform_driver vexpress_sysreg_driver = {
 	.driver = {
@@ -160,14 +162,5 @@ static struct platform_driver vexpress_sysreg_driver = {
 	.probe = vexpress_sysreg_probe,
 };
 
-static int __init vexpress_sysreg_init(void)
-{
-	struct device_node *node;
-
-	/* Need the sysreg early, before any other device... */
-	for_each_matching_node(node, vexpress_sysreg_match)
-		of_platform_device_create(node, NULL, NULL);
-
-	return platform_driver_register(&vexpress_sysreg_driver);
-}
-core_initcall(vexpress_sysreg_init);
+module_platform_driver(vexpress_sysreg_driver);
+MODULE_LICENSE("GPL v2");
-- 
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