From 8076932ff2fc0f6db0172420e6b148a8b2e8c805 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Wed, 26 Nov 2014 13:44:29 +0800 Subject: usb: chipidea: add system power management support Add system power management support Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/core.c | 48 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) (limited to 'drivers/usb/chipidea') diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index fe3880541efd..bd74f27a95e5 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -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, }, }; -- cgit v1.2.3