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iommu/rockchip: ignore device_link for vop

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iommu may enabled by pm_runtime_get_sync from vop, this
path is not accept by vop, so ignore device_link for vop

Change-Id: I532a2a964b423e78fadec02c3b4c2952301ebf4b
Signed-off-by: Simon Xue <xxm@rock-chips.com>
This commit is contained in:
Simon Xue
2019-10-21 18:36:17 +08:00
committed by Tao Huang
parent 833fd5464b
commit 76541d4495
1 changed files with 9 additions and 0 deletions
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9
drivers/iommu/rockchip-iommu.c
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@@ -102,6 +102,7 @@ struct rk_iommu {
int num_clocks;
bool reset_disabled;
bool skip_read; /* rk3126/rk3128 can't read vop iommu registers */
bool dlr_disable; /* avoid access iommu when runtime ops called */
struct iommu_device iommu;
struct list_head node; /* entry in rk_iommu_domain.iommus */
struct iommu_domain *domain; /* domain to which iommu is attached */
@@ -1216,6 +1217,8 @@ static int rk_iommu_probe(struct platform_device *pdev)
"rockchip,disable-mmu-reset");
iommu->skip_read = device_property_read_bool(dev,
"rockchip,skip-mmu-read");
iommu->dlr_disable = device_property_read_bool(dev,
"rockchip,disable-device-link-resume");
iommu->num_clocks = ARRAY_SIZE(rk_iommu_clocks);
@@ -1335,6 +1338,9 @@ static int __maybe_unused rk_iommu_suspend(struct device *dev)
if (!iommu->domain)
return 0;
if (iommu->dlr_disable)
return 0;
rk_iommu_disable(iommu);
return 0;
}
@@ -1346,6 +1352,9 @@ static int __maybe_unused rk_iommu_resume(struct device *dev)
if (!iommu->domain)
return 0;
if (iommu->dlr_disable)
return 0;
return rk_iommu_enable(iommu);
}