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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>
This commit is contained in:
Rob Herring 2020-04-29 15:58:20 -05:00
parent 0ea355ef78
commit 7b9d428e05
2 changed files with 5 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/mfd/Kconfig
View File

@ -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

15
drivers/mfd/vexpress-sysreg.c
View File

@ -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");