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iommu/rockchip: Fix runtime status unsupported

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Change-Id: Ief14da568aa641470a3a22d011739f474b9ed1ad
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
This commit is contained in:
Elaine Zhang
2017-07-21 16:46:19 +08:00
committed by Huang, Tao
parent 438fc222c2
commit a8c5cb8a04
1 changed files with 22 additions and 2 deletions
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24
drivers/iommu/rockchip-iommu.c
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@@ -76,6 +76,8 @@
#define IOMMU_REG_POLL_COUNT_FAST 1000
static LIST_HEAD(iommu_dev_list);
struct rk_iommu_domain {
struct list_head iommus;
struct platform_device *pdev;
@@ -98,6 +100,7 @@ struct rk_iommu {
struct iommu_domain *domain; /* domain to which iommu is attached */
struct clk *aclk; /* aclock belong to master */
struct clk *hclk; /* hclock belong to master */
struct list_head dev_node;
};
static inline void rk_table_flush(struct rk_iommu_domain *dom, dma_addr_t dma,
@@ -268,14 +271,12 @@ static void rk_iommu_power_on(struct rk_iommu *iommu)
clk_enable(iommu->hclk);
}
pm_runtime_enable(iommu->dev);
pm_runtime_get_sync(iommu->dev);
}
static void rk_iommu_power_off(struct rk_iommu *iommu)
{
pm_runtime_put_sync(iommu->dev);
pm_runtime_disable(iommu->dev);
if (iommu->aclk && iommu->hclk) {
clk_disable(iommu->aclk);
@@ -1226,14 +1227,33 @@ static int rk_iommu_probe(struct platform_device *pdev)
clk_prepare(iommu->hclk);
}
pm_runtime_enable(iommu->dev);
pm_runtime_get_sync(iommu->dev);
list_add(&iommu->dev_node, &iommu_dev_list);
return 0;
}
static int rk_iommu_remove(struct platform_device *pdev)
{
struct rk_iommu *iommu = platform_get_drvdata(pdev);
pm_runtime_disable(iommu->dev);
return 0;
}
static int __init rk_iommu_runtime_put(void)
{
struct rk_iommu *iommu;
list_for_each_entry(iommu, &iommu_dev_list, dev_node)
pm_runtime_put_sync(iommu->dev);
return 0;
}
late_initcall_sync(rk_iommu_runtime_put);
static const struct of_device_id rk_iommu_dt_ids[] = {
{ .compatible = "rockchip,iommu" },
{ /* sentinel */ }