Commit 83addecd authored by Marek Szyprowski's avatar Marek Szyprowski Committed by Joerg Roedel
Browse files

iommu/exynos: Refactor init config code 



This patch rewrites sysmmu_init_config function to make it easier to read
and understand.

Signed-off-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent d093fc7e

drivers/iommu/exynos-iommu.c

+9 −16
Original line number Diff line number Diff line
@@ -383,24 +383,17 @@ 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);

	unsigned int ver;



	ver = MMU_RAW_VER(__raw_readl(data->sfrbase + REG_MMU_VERSION));

	if (MMU_MAJ_VER(ver) == 3) {

		if (MMU_MIN_VER(ver) >= 2) {

			cfg |= CFG_FLPDCACHE;

			if (MMU_MIN_VER(ver) == 3) {

				cfg |= CFG_ACGEN;

				cfg &= ~CFG_LRU;

			} else {

				cfg |= CFG_SYSSEL;

			}

		}

	}

	unsigned int cfg;



	data->version = MMU_RAW_VER(__raw_readl(data->sfrbase + REG_MMU_VERSION));

	if (data->version <= MAKE_MMU_VER(3, 1))

		cfg = CFG_LRU | CFG_QOS(15);

	else if (data->version <= MAKE_MMU_VER(3, 2))

		cfg = CFG_LRU | CFG_QOS(15) | CFG_FLPDCACHE | CFG_SYSSEL;

	else

		cfg = CFG_QOS(15) | CFG_FLPDCACHE | CFG_ACGEN;



	__raw_writel(cfg, data->sfrbase + REG_MMU_CFG);

	data->version = ver;

}



static void __sysmmu_enable_nocount(struct sysmmu_drvdata *data)