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Commit 276170b9 authored by Mark Salyzyn's avatar Mark Salyzyn Committed by Saravana Kannan
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ANDROID: GKI: iommu/arm-smmu: Modularize ARM SMMU driver 



Allow ARM SMMU driver to be compiled as a module to allow vendors to use
their own implementations.

Bug: 155522481
Signed-off-by: default avatarMark Salyzyn <salyzyn@google.com>
Change-Id: I80d54a1ead843aab860410a32221fbf02aa703c8
Signed-off-by: default avatarSaravana Kannan <saravanak@google.com>
parent e24979f0

drivers/iommu/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -344,7 +344,7 @@ config SPAPR_TCE_IOMMU 


# ARM IOMMU support

config ARM_SMMU

	bool "ARM Ltd. System MMU (SMMU) Support"

	tristate "ARM Ltd. System MMU (SMMU) Support"

	depends on (ARM64 || ARM) && MMU

	select IOMMU_API

	select IOMMU_IO_PGTABLE_LPAE

drivers/iommu/arm-smmu.c

+22 −1
Original line number Diff line number Diff line
@@ -2188,7 +2188,9 @@ static int arm_smmu_legacy_bus_init(void) 
		arm_smmu_bus_init();

	return 0;

}

#ifndef MODULE

device_initcall_sync(arm_smmu_legacy_bus_init);

#endif



static int arm_smmu_device_remove(struct platform_device *pdev)

{
@@ -2230,7 +2232,26 @@ static struct platform_driver arm_smmu_driver = { 
	.remove	= arm_smmu_device_remove,

	.shutdown = arm_smmu_device_shutdown,

};

module_platform_driver(arm_smmu_driver);



static int __init arm_smmu_driver_init(void)

{

	int ret;



	ret = platform_driver_register(&arm_smmu_driver);

#ifdef MODULE

	if (!ret)

		arm_smmu_legacy_bus_init();

#endif

	return ret;

}



static void __exit arm_smmu_driver_exit(void)

{

	platform_driver_unregister(&arm_smmu_driver);

}



subsys_initcall(arm_smmu_driver_init);

module_exit(arm_smmu_driver_exit);



MODULE_DESCRIPTION("IOMMU API for ARM architected SMMU implementations");

MODULE_AUTHOR("Will Deacon <will.deacon@arm.com>");