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| author | Artur Petrosyan <Arthur.Petrosyan@synopsys.com> | 2021-04-16 16:48:10 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-22 11:55:34 +0200 |
| commit | 755d0effebb82caf397b719602b9e76b1d5e2831 (patch) | |
| tree | 24dad62e177f267e77a52e6bb4fd9f1d949b3fd5 /drivers/usb/dwc2 | |
| parent | c3595df7a6115db74dfc23b0bac214c0ec62cad8 (diff) | |
| download | linux-755d0effebb82caf397b719602b9e76b1d5e2831.tar.gz linux-755d0effebb82caf397b719602b9e76b1d5e2831.tar.bz2 linux-755d0effebb82caf397b719602b9e76b1d5e2831.zip | |
usb: dwc2: Add hibernation entering flow by system suspend
Adds a new flow of entering hibernation when PC is
hibernated or suspended.
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210416124811.BBFDBA005C@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc2')
| -rw-r--r-- | drivers/usb/dwc2/hcd.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 093b1717df01..92848629cc61 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -4387,6 +4387,16 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); break; case DWC2_POWER_DOWN_PARAM_HIBERNATION: + /* Enter hibernation */ + spin_unlock_irqrestore(&hsotg->lock, flags); + ret = dwc2_enter_hibernation(hsotg, 1); + if (ret) + dev_err(hsotg->dev, "enter hibernation failed\n"); + spin_lock_irqsave(&hsotg->lock, flags); + + /* After entering suspend, hardware is not accessible */ + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + break; case DWC2_POWER_DOWN_PARAM_NONE: /* * If not hibernation nor partial power down are supported, |