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path: root/drivers/scsi/ufs/ufshcd-pci.c
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Diffstat (limited to 'drivers/scsi/ufs/ufshcd-pci.c')
-rw-r--r--drivers/scsi/ufs/ufshcd-pci.c99
1 files changed, 64 insertions, 35 deletions
diff --git a/drivers/scsi/ufs/ufshcd-pci.c b/drivers/scsi/ufs/ufshcd-pci.c
index 48be39a6f6d7..a823cf44e949 100644
--- a/drivers/scsi/ufs/ufshcd-pci.c
+++ b/drivers/scsi/ufs/ufshcd-pci.c
@@ -35,6 +35,7 @@
#include "ufshcd.h"
#include <linux/pci.h>
+#include <linux/pm_runtime.h>
#ifdef CONFIG_PM
/**
@@ -44,7 +45,7 @@
*
* Returns -ENOSYS
*/
-static int ufshcd_pci_suspend(struct pci_dev *pdev, pm_message_t state)
+static int ufshcd_pci_suspend(struct device *dev)
{
/*
* TODO:
@@ -61,7 +62,7 @@ static int ufshcd_pci_suspend(struct pci_dev *pdev, pm_message_t state)
*
* Returns -ENOSYS
*/
-static int ufshcd_pci_resume(struct pci_dev *pdev)
+static int ufshcd_pci_resume(struct device *dev)
{
/*
* TODO:
@@ -71,8 +72,45 @@ static int ufshcd_pci_resume(struct pci_dev *pdev)
return -ENOSYS;
}
+#else
+#define ufshcd_pci_suspend NULL
+#define ufshcd_pci_resume NULL
#endif /* CONFIG_PM */
+#ifdef CONFIG_PM_RUNTIME
+static int ufshcd_pci_runtime_suspend(struct device *dev)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ if (!hba)
+ return 0;
+
+ return ufshcd_runtime_suspend(hba);
+}
+static int ufshcd_pci_runtime_resume(struct device *dev)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ if (!hba)
+ return 0;
+
+ return ufshcd_runtime_resume(hba);
+}
+static int ufshcd_pci_runtime_idle(struct device *dev)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ if (!hba)
+ return 0;
+
+ return ufshcd_runtime_idle(hba);
+}
+#else /* !CONFIG_PM_RUNTIME */
+#define ufshcd_pci_runtime_suspend NULL
+#define ufshcd_pci_runtime_resume NULL
+#define ufshcd_pci_runtime_idle NULL
+#endif /* CONFIG_PM_RUNTIME */
+
/**
* ufshcd_pci_shutdown - main function to put the controller in reset state
* @pdev: pointer to PCI device handle
@@ -91,12 +129,10 @@ static void ufshcd_pci_remove(struct pci_dev *pdev)
{
struct ufs_hba *hba = pci_get_drvdata(pdev);
- disable_irq(pdev->irq);
+ pm_runtime_forbid(&pdev->dev);
+ pm_runtime_get_noresume(&pdev->dev);
ufshcd_remove(hba);
- pci_release_regions(pdev);
pci_set_drvdata(pdev, NULL);
- pci_clear_master(pdev);
- pci_disable_device(pdev);
}
/**
@@ -133,55 +169,49 @@ ufshcd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
void __iomem *mmio_base;
int err;
- err = pci_enable_device(pdev);
+ err = pcim_enable_device(pdev);
if (err) {
- dev_err(&pdev->dev, "pci_enable_device failed\n");
- goto out_error;
+ dev_err(&pdev->dev, "pcim_enable_device failed\n");
+ return err;
}
pci_set_master(pdev);
-
- err = pci_request_regions(pdev, UFSHCD);
+ err = pcim_iomap_regions(pdev, 1 << 0, UFSHCD);
if (err < 0) {
- dev_err(&pdev->dev, "request regions failed\n");
- goto out_disable;
+ dev_err(&pdev->dev, "request and iomap failed\n");
+ return err;
}
- mmio_base = pci_ioremap_bar(pdev, 0);
- if (!mmio_base) {
- dev_err(&pdev->dev, "memory map failed\n");
- err = -ENOMEM;
- goto out_release_regions;
- }
+ mmio_base = pcim_iomap_table(pdev)[0];
err = ufshcd_set_dma_mask(pdev);
if (err) {
dev_err(&pdev->dev, "set dma mask failed\n");
- goto out_iounmap;
+ return err;
}
err = ufshcd_init(&pdev->dev, &hba, mmio_base, pdev->irq);
if (err) {
dev_err(&pdev->dev, "Initialization failed\n");
- goto out_iounmap;
+ return err;
}
pci_set_drvdata(pdev, hba);
+ pm_runtime_put_noidle(&pdev->dev);
+ pm_runtime_allow(&pdev->dev);
return 0;
-
-out_iounmap:
- iounmap(mmio_base);
-out_release_regions:
- pci_release_regions(pdev);
-out_disable:
- pci_clear_master(pdev);
- pci_disable_device(pdev);
-out_error:
- return err;
}
+static const struct dev_pm_ops ufshcd_pci_pm_ops = {
+ .suspend = ufshcd_pci_suspend,
+ .resume = ufshcd_pci_resume,
+ .runtime_suspend = ufshcd_pci_runtime_suspend,
+ .runtime_resume = ufshcd_pci_runtime_resume,
+ .runtime_idle = ufshcd_pci_runtime_idle,
+};
+
static DEFINE_PCI_DEVICE_TABLE(ufshcd_pci_tbl) = {
{ PCI_VENDOR_ID_SAMSUNG, 0xC00C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ } /* terminate list */
@@ -195,10 +225,9 @@ static struct pci_driver ufshcd_pci_driver = {
.probe = ufshcd_pci_probe,
.remove = ufshcd_pci_remove,
.shutdown = ufshcd_pci_shutdown,
-#ifdef CONFIG_PM
- .suspend = ufshcd_pci_suspend,
- .resume = ufshcd_pci_resume,
-#endif
+ .driver = {
+ .pm = &ufshcd_pci_pm_ops
+ },
};
module_pci_driver(ufshcd_pci_driver);