diff options
Diffstat (limited to 'drivers/iommu/arm-smmu-qcom.c')
| -rw-r--r-- | drivers/iommu/arm-smmu-qcom.c | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/drivers/iommu/arm-smmu-qcom.c b/drivers/iommu/arm-smmu-qcom.c index 24c071c1d8b0..cf01d0215a39 100644 --- a/drivers/iommu/arm-smmu-qcom.c +++ b/drivers/iommu/arm-smmu-qcom.c @@ -3,6 +3,7 @@ * Copyright (c) 2019, The Linux Foundation. All rights reserved. */ +#include <linux/of_device.h> #include <linux/qcom_scm.h> #include "arm-smmu.h" @@ -11,12 +12,29 @@ struct qcom_smmu { struct arm_smmu_device smmu; }; +static const struct of_device_id qcom_smmu_client_of_match[] = { + { .compatible = "qcom,adreno" }, + { .compatible = "qcom,mdp4" }, + { .compatible = "qcom,mdss" }, + { .compatible = "qcom,sc7180-mdss" }, + { .compatible = "qcom,sc7180-mss-pil" }, + { .compatible = "qcom,sdm845-mdss" }, + { .compatible = "qcom,sdm845-mss-pil" }, + { } +}; + +static int qcom_smmu_def_domain_type(struct device *dev) +{ + const struct of_device_id *match = + of_match_device(qcom_smmu_client_of_match, dev); + + return match ? IOMMU_DOMAIN_IDENTITY : 0; +} + static int qcom_sdm845_smmu500_reset(struct arm_smmu_device *smmu) { int ret; - arm_mmu500_reset(smmu); - /* * To address performance degradation in non-real time clients, * such as USB and UFS, turn off wait-for-safe on sdm845 based boards, @@ -30,8 +48,21 @@ static int qcom_sdm845_smmu500_reset(struct arm_smmu_device *smmu) return ret; } +static int qcom_smmu500_reset(struct arm_smmu_device *smmu) +{ + const struct device_node *np = smmu->dev->of_node; + + arm_mmu500_reset(smmu); + + if (of_device_is_compatible(np, "qcom,sdm845-smmu-500")) + return qcom_sdm845_smmu500_reset(smmu); + + return 0; +} + static const struct arm_smmu_impl qcom_smmu_impl = { - .reset = qcom_sdm845_smmu500_reset, + .def_domain_type = qcom_smmu_def_domain_type, + .reset = qcom_smmu500_reset, }; struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu) |