[PATCH v4 04/10] usb: ehci-orion: add S2RAM support

[Miquel Raynal]

Add suspend/resume callbacks to reset the host controller properly
during S2RAM operation.

Signed-off-by: Miquel Raynal <miquel.ray...@bootlin.com>
---
 drivers/usb/host/ehci-orion.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c
index 3109f082949e..0dab099b5d15 100644
--- a/drivers/usb/host/ehci-orion.c
+++ b/drivers/usb/host/ehci-orion.c
@@ -182,6 +182,23 @@ static int ehci_orion_drv_reset(struct usb_hcd *hcd)
        return ret;
 }
 
+static int __maybe_unused ehci_orion_drv_suspend(struct device *dev)
+{
+       struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+       return ehci_suspend(hcd, device_may_wakeup(dev));
+}
+
+static int __maybe_unused ehci_orion_drv_resume(struct device *dev)
+{
+       struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+       return ehci_resume(hcd, device_may_wakeup(dev));
+}
+
+static SIMPLE_DEV_PM_OPS(ehci_orion_pm_ops, ehci_orion_drv_suspend,
+                        ehci_orion_drv_resume);
+
 static const struct ehci_driver_overrides orion_overrides __initconst = {
        .extra_priv_size =      sizeof(struct orion_ehci_hcd),
        .reset = ehci_orion_drv_reset,
@@ -334,6 +351,7 @@ static struct platform_driver ehci_orion_driver = {
        .driver = {
                .name   = "orion-ehci",
                .of_match_table = ehci_orion_dt_ids,
+               .pm = &ehci_orion_pm_ops,
        },
 };
 
-- 
2.19.1