Commit 8076932f authored by Peter Chen's avatar Peter Chen Committed by Greg Kroah-Hartman
Browse files

usb: chipidea: add system power management support 



Add system power management support

Signed-off-by: default avatarPeter Chen <peter.chen@freescale.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b82613cf

drivers/usb/chipidea/core.c

+48 −0
Original line number Diff line number Diff line
@@ -791,11 +791,59 @@ static int ci_hdrc_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_PM_SLEEP

static void ci_controller_suspend(struct ci_hdrc *ci)

{

	ci_hdrc_enter_lpm(ci, true);



	if (ci->usb_phy)

		usb_phy_set_suspend(ci->usb_phy, 1);

}



static int ci_controller_resume(struct device *dev)

{

	struct ci_hdrc *ci = dev_get_drvdata(dev);



	dev_dbg(dev, "at %s\n", __func__);



	ci_hdrc_enter_lpm(ci, false);



	if (ci->usb_phy) {

		usb_phy_set_suspend(ci->usb_phy, 0);

		usb_phy_set_wakeup(ci->usb_phy, false);

		hw_wait_phy_stable();

	}



	return 0;

}



static int ci_suspend(struct device *dev)

{

	struct ci_hdrc *ci = dev_get_drvdata(dev);



	if (ci->wq)

		flush_workqueue(ci->wq);



	ci_controller_suspend(ci);



	return 0;

}



static int ci_resume(struct device *dev)

{

	return ci_controller_resume(dev);

}

#endif /* CONFIG_PM_SLEEP */



static const struct dev_pm_ops ci_pm_ops = {

	SET_SYSTEM_SLEEP_PM_OPS(ci_suspend, ci_resume)

};

static struct platform_driver ci_hdrc_driver = {

	.probe	= ci_hdrc_probe,

	.remove	= ci_hdrc_remove,

	.driver	= {

		.name	= "ci_hdrc",

		.pm	= &ci_pm_ops,

		.owner	= THIS_MODULE,

	},

};