diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2016-02-18 17:12:54 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2016-02-25 17:32:10 +0300 |
| commit | 83addecdb7c9a4a533205cf57cb4d5b5631a704b (patch) | |
| tree | 9edad940181f201724860a747375746b4014bb43 /drivers/iommu | |
| parent | d093fc7e8390c3e46294290c0d76de93422a601f (diff) | |
| download | linux-83addecdb7c9a4a533205cf57cb4d5b5631a704b.tar.xz | |
iommu/exynos: Refactor init config code
This patch rewrites sysmmu_init_config function to make it easier to read
and understand.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/exynos-iommu.c | 25 |
1 files changed, 9 insertions, 16 deletions
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 3a577a473f3c..15787a177a16 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -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) |