From 5c4ad318de3b8e8680d654c82a254c4b65243739 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 11 Apr 2016 17:12:34 +0300 Subject: usb: dwc3: core: fix PHY handling during suspend we need to power off the PHY during suspend and power it back on during resume. Signed-off-by: Felipe Balbi [nsekhar@ti.com: fix call to usb_phy_set_suspend() in dwc3_suspend()] Signed-off-by: Sekhar Nori Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1124,6 +1124,11 @@ static int dwc3_suspend(struct device *d phy_exit(dwc->usb2_generic_phy); phy_exit(dwc->usb3_generic_phy); + usb_phy_set_suspend(dwc->usb2_phy, 1); + usb_phy_set_suspend(dwc->usb3_phy, 1); + WARN_ON(phy_power_off(dwc->usb2_generic_phy) < 0); + WARN_ON(phy_power_off(dwc->usb3_generic_phy) < 0); + pinctrl_pm_select_sleep_state(dev); return 0; @@ -1137,11 +1142,21 @@ static int dwc3_resume(struct device *de pinctrl_pm_select_default_state(dev); + usb_phy_set_suspend(dwc->usb2_phy, 0); + usb_phy_set_suspend(dwc->usb3_phy, 0); + ret = phy_power_on(dwc->usb2_generic_phy); + if (ret < 0) + return ret; + + ret = phy_power_on(dwc->usb3_generic_phy); + if (ret < 0) + goto err_usb2phy_power; + usb_phy_init(dwc->usb3_phy); usb_phy_init(dwc->usb2_phy); ret = phy_init(dwc->usb2_generic_phy); if (ret < 0) - return ret; + goto err_usb3phy_power; ret = phy_init(dwc->usb3_generic_phy); if (ret < 0) @@ -1174,6 +1189,12 @@ static int dwc3_resume(struct device *de err_usb2phy_init: phy_exit(dwc->usb2_generic_phy); +err_usb3phy_power: + phy_power_off(dwc->usb3_generic_phy); + +err_usb2phy_power: + phy_power_off(dwc->usb2_generic_phy); + return ret; }