iommu: arm-smmu-impl: Use table to list QCOM implementations

Use table and of_match_node() to match qcom implementation
instead of multiple of_device_compatible() calls for each
QCOM SMMU implementation.

Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/4e11899bc02102a6e6155db215911e8b5aaba950.1606287059.git.saiprakash.ranjan@codeaurora.org
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-impl.c b/drivers/iommu/arm/arm-smmu/arm-smmu-impl.c
index 7fed89c..26e2734 100644 (file)
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-impl.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-impl.c
@@ -214,14 +214,7 @@ struct arm_smmu_device *arm_smmu_impl_init(struct arm_smmu_device *smmu)
        if (of_device_is_compatible(np, "nvidia,tegra194-smmu"))
                return nvidia_smmu_impl_init(smmu);
 
-       if (of_device_is_compatible(np, "qcom,sdm845-smmu-500") ||
-           of_device_is_compatible(np, "qcom,sc7180-smmu-500") ||
-           of_device_is_compatible(np, "qcom,sm8150-smmu-500") ||
-           of_device_is_compatible(np, "qcom,sm8250-smmu-500"))
-               return qcom_smmu_impl_init(smmu);
-
-       if (of_device_is_compatible(smmu->dev->of_node, "qcom,adreno-smmu"))
-               return qcom_adreno_smmu_impl_init(smmu);
+       smmu = qcom_smmu_impl_init(smmu);
 
        if (of_device_is_compatible(np, "marvell,ap806-smmu-500"))
                smmu->impl = &mrvl_mmu500_impl;

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index d0636c8..add1859 100644 (file)
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -318,12 +318,23 @@ static struct arm_smmu_device *qcom_smmu_create(struct arm_smmu_device *smmu,
        return &qsmmu->smmu;
 }
 
+static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = {
+       { .compatible = "qcom,sc7180-smmu-500" },
+       { .compatible = "qcom,sdm845-smmu-500" },
+       { .compatible = "qcom,sm8150-smmu-500" },
+       { .compatible = "qcom,sm8250-smmu-500" },
+       { }
+};
+
 struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu)
 {
-       return qcom_smmu_create(smmu, &qcom_smmu_impl);
-}
+       const struct device_node *np = smmu->dev->of_node;
 
-struct arm_smmu_device *qcom_adreno_smmu_impl_init(struct arm_smmu_device *smmu)
-{
-       return qcom_smmu_create(smmu, &qcom_adreno_smmu_impl);
+       if (of_match_node(qcom_smmu_impl_of_match, np))
+               return qcom_smmu_create(smmu, &qcom_smmu_impl);
+
+       if (of_device_is_compatible(np, "qcom,adreno-smmu"))
+               return qcom_smmu_create(smmu, &qcom_adreno_smmu_impl);
+
+       return smmu;
 }

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.h b/drivers/iommu/arm/arm-smmu/arm-smmu.h
index cb7ca3a..d2a2d1b 100644 (file)
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.h
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.h
@@ -523,7 +523,6 @@ static inline void arm_smmu_writeq(struct arm_smmu_device *smmu, int page,
 struct arm_smmu_device *arm_smmu_impl_init(struct arm_smmu_device *smmu);
 struct arm_smmu_device *nvidia_smmu_impl_init(struct arm_smmu_device *smmu);
 struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu);
-struct arm_smmu_device *qcom_adreno_smmu_impl_init(struct arm_smmu_device *smmu);
 
 void arm_smmu_write_context_bank(struct arm_smmu_device *smmu, int idx);
 int arm_mmu500_reset(struct arm_smmu_device *smmu);