iommu/exynos: use simpler function to get MMU version
This commit changes the function to get MMU version simpler.
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 6e716cc..3d4dabb 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -251,24 +251,6 @@
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;
@@ -422,13 +404,13 @@
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 {
@@ -583,7 +565,7 @@
* 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);
