From mboxrd@z Thu Jan 1 00:00:00 1970 From: shaik.ameer@samsung.com (Shaik Ameer Basha) Date: Sun, 27 Apr 2014 13:07:44 +0530 Subject: [PATCH v12 12/31] iommu/exynos: support for device tree In-Reply-To: <1398584283-22846-1-git-send-email-shaik.ameer@samsung.com> References: <1398584283-22846-1-git-send-email-shaik.ameer@samsung.com> Message-ID: <1398584283-22846-13-git-send-email-shaik.ameer@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Cho KyongHo This commit adds device tree support for System MMU. It also enables iommu support for ARCH_EXYNOS. Signed-off-by: Cho KyongHo Signed-off-by: Shaik Ameer Basha --- arch/arm/Kconfig | 2 ++ drivers/iommu/Kconfig | 8 +++----- drivers/iommu/exynos-iommu.c | 19 +++++++++++++++---- 3 files changed, 20 insertions(+), 9 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index ab438cb..19689e4 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -834,6 +834,8 @@ config ARCH_EXYNOS select ARCH_HAS_HOLES_MEMORYMODEL select ARCH_REQUIRE_GPIOLIB select ARCH_SPARSEMEM_ENABLE + select ARM_AMBA + select ARM_DMA_USE_IOMMU select ARM_GIC select COMMON_CLK select CPU_V7 diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index df56e4c..5feadb8 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -178,16 +178,14 @@ config TEGRA_IOMMU_SMMU config EXYNOS_IOMMU bool "Exynos IOMMU Support" - depends on ARCH_EXYNOS && EXYNOS_DEV_SYSMMU + depends on ARCH_EXYNOS select IOMMU_API help - Support for the IOMMU(System MMU) of Samsung Exynos application - processor family. This enables H/W multimedia accellerators to see + Support for the IOMMU (System MMU) of Samsung Exynos application + processor family. This enables H/W multimedia accelerators to see non-linear physical memory chunks as a linear memory in their address spaces - If unsure, say N here. - config EXYNOS_IOMMU_DEBUG bool "Debugging log for Exynos IOMMU" depends on EXYNOS_IOMMU diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 0f1d3f0..cbb9b67 100755 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include @@ -494,7 +495,7 @@ void exynos_sysmmu_tlb_invalidate(struct device *dev) read_unlock_irqrestore(&data->lock, flags); } -static int exynos_sysmmu_probe(struct platform_device *pdev) +static int __init exynos_sysmmu_probe(struct platform_device *pdev) { int irq, ret; struct device *dev = &pdev->dev; @@ -548,11 +549,21 @@ static int exynos_sysmmu_probe(struct platform_device *pdev) return 0; } -static struct platform_driver exynos_sysmmu_driver = { - .probe = exynos_sysmmu_probe, - .driver = { +static const struct of_device_id sysmmu_of_match[] __initconst = { + { .compatible = "samsung,sysmmu-v1", }, + { .compatible = "samsung,sysmmu-v2", }, + { .compatible = "samsung,sysmmu-v3.1", }, + { .compatible = "samsung,sysmmu-v3.2", }, + { .compatible = "samsung,sysmmu-v3.3", }, + { }, +}; + +static struct platform_driver exynos_sysmmu_driver __refdata = { + .probe = exynos_sysmmu_probe, + .driver = { .owner = THIS_MODULE, .name = "exynos-sysmmu", + .of_match_table = sysmmu_of_match, } }; -- 1.7.9.5