Commit 8de000cf authored by Yong Wu's avatar Yong Wu Committed by Joerg Roedel
Browse files

iommu/mediatek-v1: Allow building as module 



This patch only adds support for building the IOMMU-v1 driver as module.
Correspondingly switch the config to tristate and update the iommu_ops's
owner to THIS_MODULE.

Signed-off-by: default avatarYong Wu <yong.wu@mediatek.com>
Link: https://lore.kernel.org/r/20210326032337.24578-1-yong.wu@mediatek.com


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 1e28eed1

drivers/iommu/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -364,7 +364,7 @@ config MTK_IOMMU 
	  If unsure, say N here.



config MTK_IOMMU_V1

	bool "MTK IOMMU Version 1 (M4U gen1) Support"

	tristate "MediaTek IOMMU Version 1 (M4U gen1) Support"

	depends on ARM

	depends on ARCH_MEDIATEK || COMPILE_TEST

	select ARM_DMA_USE_IOMMU

drivers/iommu/mtk_iommu_v1.c

+5 −5
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <linux/iommu.h>

#include <linux/iopoll.h>

#include <linux/list.h>

#include <linux/module.h>

#include <linux/of_address.h>

#include <linux/of_iommu.h>

#include <linux/of_irq.h>
@@ -529,6 +530,7 @@ static const struct iommu_ops mtk_iommu_ops = { 
	.def_domain_type = mtk_iommu_def_domain_type,

	.device_group	= generic_device_group,

	.pgsize_bitmap	= ~0UL << MT2701_IOMMU_PAGE_SHIFT,

	.owner          = THIS_MODULE,

};



static const struct of_device_id mtk_iommu_of_ids[] = {
@@ -691,9 +693,7 @@ static struct platform_driver mtk_iommu_driver = { 
		.pm = &mtk_iommu_pm_ops,

	}

};

module_platform_driver(mtk_iommu_driver);



static int __init m4u_init(void)

{

	return platform_driver_register(&mtk_iommu_driver);

}

subsys_initcall(m4u_init);
 
MODULE_DESCRIPTION("IOMMU API for MediaTek M4U v1 implementations");

MODULE_LICENSE("GPL v2");