usb: chipidea: imx: add usb as system wakeup source

Enable USB as system wakeup source, and each platform needs to implement
imx_usbmisc_set_wakeup in usbmisc_imx.c to support.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c
index 5ad85fe84411..f7f9fd45c9ea 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.c
+++ b/drivers/usb/chipidea/ci_hdrc_imx.c
@@ -199,6 +199,8 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
                 pm_runtime_enable(&pdev->dev);
         }
 
+        device_set_wakeup_capable(&pdev->dev, true);
+
         return 0;
 
 disable_device:
@@ -270,12 +272,23 @@ clk_disable:
 #ifdef CONFIG_PM_SLEEP
 static int ci_hdrc_imx_suspend(struct device *dev)
 {
+        int ret;
+
         struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
 
         if (data->in_lpm)
                 /* The core's suspend doesn't run */
                 return 0;
 
+        if (device_may_wakeup(dev)) {
+                ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true);
+                if (ret) {
+                        dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n",
+                                        ret);
+                        return ret;
+                }
+        }
+
         return imx_controller_suspend(dev);
 }