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