usb: gadget: udc: renesas_usb3: Add suspend/resume functions

This patch adds support suspend/resume functions

Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
[shimoda: add the commit log]
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c
index 740497c43bd39cb4667e231cd32536aac34ef4bc..75afc4c4bbd8541e14a48d19d6bb769f3da37e57 100644 (file)
--- a/drivers/usb/gadget/udc/renesas_usb3.c
+++ b/drivers/usb/gadget/udc/renesas_usb3.c
@@ -2655,11 +2655,45 @@ err_alloc_prd:
        return ret;
 }
 
+#ifdef CONFIG_PM_SLEEP
+static int renesas_usb3_suspend(struct device *dev)
+{
+       struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
+
+       /* Not started */
+       if (!usb3->driver)
+               return 0;
+
+       renesas_usb3_stop_controller(usb3);
+       pm_runtime_put(dev);
+
+       return 0;
+}
+
+static int renesas_usb3_resume(struct device *dev)
+{
+       struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
+
+       /* Not started */
+       if (!usb3->driver)
+               return 0;
+
+       pm_runtime_get_sync(dev);
+       renesas_usb3_init_controller(usb3);
+
+       return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(renesas_usb3_pm_ops, renesas_usb3_suspend,
+                       renesas_usb3_resume);
+
 static struct platform_driver renesas_usb3_driver = {
        .probe          = renesas_usb3_probe,
        .remove         = renesas_usb3_remove,
        .driver         = {
                .name = (char *)udc_name,
+               .pm             = &renesas_usb3_pm_ops,
                .of_match_table = of_match_ptr(usb3_of_match),
        },
 };