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Date: Sun, 27 Apr 2014 13:07:55 +0530 From: Shaik Ameer Basha <shaik.ameer@...sung.com> To: linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org Cc: kgene.kim@...sung.com, tomasz.figa@...il.com, pullip.cho@...sung.com, a.motakis@...tualopensystems.com, grundler@...omium.org, joro@...tes.org, prathyush.k@...sung.com, rahul.sharma@...sung.com, sachin.kamat@...aro.org, supash.ramaswamy@...aro.org, Varun.Sethi@...escale.com, s.nawrocki@...sung.com, t.figa@...sung.com, joshi@...sung.com Subject: [PATCH v12 23/31] iommu/exynos: use simpler function to get MMU version From: Cho KyongHo <pullip.cho@...sung.com> This commit changes the function to get MMU version simpler. Signed-off-by: Cho KyongHo <pullip.cho@...sung.com> --- drivers/iommu/exynos-iommu.c | 30 ++++++------------------------ 1 file changed, 6 insertions(+), 24 deletions(-) diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 00915f2..54011e5 100755 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -252,24 +252,6 @@ static unsigned int __raw_sysmmu_version(struct sysmmu_drvdata *data) return MMU_RAW_VER(__raw_readl(data->sfrbase + REG_MMU_VERSION)); } -static unsigned int __sysmmu_version(struct sysmmu_drvdata *data, - unsigned int *minor) -{ - unsigned int ver = 0; - - ver = __raw_sysmmu_version(data); - if (ver > MAKE_MMU_VER(3, 3)) { - dev_err(data->sysmmu, "%s: version(%d.%d) is higher than 3.3\n", - __func__, MMU_MAJ_VER(ver), MMU_MIN_VER(ver)); - BUG(); - } - - if (minor) - *minor = MMU_MIN_VER(ver); - - return MMU_MAJ_VER(ver); -} - static bool sysmmu_block(void __iomem *sfrbase) { int i = 120; @@ -427,13 +409,13 @@ static bool __sysmmu_disable(struct sysmmu_drvdata *data) static void __sysmmu_init_config(struct sysmmu_drvdata *data) { unsigned int cfg = CFG_LRU | CFG_QOS(15); - int maj, min = 0; + unsigned int ver; - maj = __sysmmu_version(data, &min); - if (maj == 3) { - if (min >= 2) { + ver = __raw_sysmmu_version(data); + if (MMU_MAJ_VER(ver) == 3) { + if (MMU_MIN_VER(ver) >= 2) { cfg |= CFG_FLPDCACHE; - if (min == 3) { + if (MMU_MIN_VER(ver) == 3) { cfg |= CFG_ACGEN; cfg &= ~CFG_LRU; } else { @@ -591,7 +573,7 @@ static void sysmmu_tlb_invalidate_entry(struct device *dev, sysmmu_iova_t iova, * 1MB page can be cached in one of all sets. * 64KB page can be one of 16 consecutive sets. */ - if (__sysmmu_version(data, NULL) == 2) + if (MMU_MAJ_VER(__raw_sysmmu_version(data)) == 2) num_inv = min_t(unsigned int, size / PAGE_SIZE, 64); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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