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iommu/mediatek: Use helper functions to access dev->iommu_fwspec

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Use the new helpers dev_iommu_fwspec_get()/set() to access
the dev->iommu_fwspec pointer. This makes it easier to move
that pointer later into another struct.

Cc: Matthias Brugger <matthias.bgg@gmail.com>
Tested-by: Yong Wu <yong.wu@mediatek.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel
2018-11-29 14:01:00 +01:00
父節點 df90365580
當前提交 a9bf2eec5a
共有 2 個文件被更改，包括 28 次插入 和 21 次删除
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21
drivers/iommu/mtk_iommu.c
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@@ -244,7 +244,7 @@ static void mtk_iommu_config(struct mtk_iommu_data *data,
{
struct mtk_smi_larb_iommu *larb_mmu;
unsigned int larbid, portid;
struct iommu_fwspec *fwspec = dev->iommu_fwspec;
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
int i;
for (i = 0; i < fwspec->num_ids; ++i) {
@@ -336,7 +336,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
struct device *dev)
{
struct mtk_iommu_domain *dom = to_mtk_domain(domain);
struct mtk_iommu_data *data = dev->iommu_fwspec->iommu_priv;
struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
if (!data)
return -ENODEV;
@@ -355,7 +355,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
static void mtk_iommu_detach_device(struct iommu_domain *domain,
struct device *dev)
{
struct mtk_iommu_data *data = dev->iommu_fwspec->iommu_priv;
struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
if (!data)
return;
@@ -417,13 +417,14 @@ static phys_addr_t mtk_iommu_iova_to_phys(struct iommu_domain *domain,
static int mtk_iommu_add_device(struct device *dev)
{
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct mtk_iommu_data *data;
struct iommu_group *group;
if (!dev->iommu_fwspec || dev->iommu_fwspec->ops != &mtk_iommu_ops)
if (!fwspec || fwspec->ops != &mtk_iommu_ops)
return -ENODEV; /* Not a iommu client device */
data = dev->iommu_fwspec->iommu_priv;
data = fwspec->iommu_priv;
iommu_device_link(&data->iommu, dev);
group = iommu_group_get_for_dev(dev);
@@ -436,12 +437,13 @@ static int mtk_iommu_add_device(struct device *dev)
static void mtk_iommu_remove_device(struct device *dev)
{
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct mtk_iommu_data *data;
if (!dev->iommu_fwspec || dev->iommu_fwspec->ops != &mtk_iommu_ops)
if (!fwspec || fwspec->ops != &mtk_iommu_ops)
return;
data = dev->iommu_fwspec->iommu_priv;
data = fwspec->iommu_priv;
iommu_device_unlink(&data->iommu, dev);
iommu_group_remove_device(dev);
@@ -468,6 +470,7 @@ static struct iommu_group *mtk_iommu_device_group(struct device *dev)
static int mtk_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
{
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct platform_device *m4updev;
if (args->args_count != 1) {
@@ -476,13 +479,13 @@ static int mtk_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
return -EINVAL;
}
if (!dev->iommu_fwspec->iommu_priv) {
if (!fwspec->iommu_priv) {
/* Get the m4u device */
m4updev = of_find_device_by_node(args->np);
if (WARN_ON(!m4updev))
return -EINVAL;
dev->iommu_fwspec->iommu_priv = platform_get_drvdata(m4updev);
fwspec->iommu_priv = platform_get_drvdata(m4updev);
}
return iommu_fwspec_add_ids(dev, args->args, 1);