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iommu/arm-smmu: Constify some helpers 

Sprinkle a few `const`s where helpers don't need write access.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Rob Clark 2020-09-05 13:04:21 -07:00 committed by Will Deacon
parent 556db53a71
commit 1226fa0e54
1 changed files with 3 additions and 3 deletions
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6
drivers/iommu/arm/arm-smmu/arm-smmu.h
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@ -377,7 +377,7 @@ struct arm_smmu_master_cfg {
s16 smendx[];
};
static inline u32 arm_smmu_lpae_tcr(struct io_pgtable_cfg *cfg)
static inline u32 arm_smmu_lpae_tcr(const struct io_pgtable_cfg *cfg)
{
u32 tcr = FIELD_PREP(ARM_SMMU_TCR_TG0, cfg->arm_lpae_s1_cfg.tcr.tg) |
FIELD_PREP(ARM_SMMU_TCR_SH0, cfg->arm_lpae_s1_cfg.tcr.sh) |
@ -398,13 +398,13 @@ static inline u32 arm_smmu_lpae_tcr(struct io_pgtable_cfg *cfg)
return tcr;
}
static inline u32 arm_smmu_lpae_tcr2(struct io_pgtable_cfg *cfg)
static inline u32 arm_smmu_lpae_tcr2(const struct io_pgtable_cfg *cfg)
{
return FIELD_PREP(ARM_SMMU_TCR2_PASIZE, cfg->arm_lpae_s1_cfg.tcr.ips) |
FIELD_PREP(ARM_SMMU_TCR2_SEP, ARM_SMMU_TCR2_SEP_UPSTREAM);
}
static inline u32 arm_smmu_lpae_vtcr(struct io_pgtable_cfg *cfg)
static inline u32 arm_smmu_lpae_vtcr(const struct io_pgtable_cfg *cfg)
{
return ARM_SMMU_VTCR_RES1 |
FIELD_PREP(ARM_SMMU_VTCR_PS, cfg->arm_lpae_s2_cfg.vtcr.ps) |