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- From 5c4ad318de3b8e8680d654c82a254c4b65243739 Mon Sep 17 00:00:00 2001
- From: Felipe Balbi <balbi@kernel.org>
- 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 <balbi@kernel.org>
- [nsekhar@ti.com: fix call to usb_phy_set_suspend() in dwc3_suspend()]
- Signed-off-by: Sekhar Nori <nsekhar@ti.com>
- Signed-off-by: Roger Quadros <rogerq@ti.com>
- Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
- ---
- 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;
- }
-
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