diff options
| author | Martin Kepplinger <martin.kepplinger@puri.sm> | 2020-03-19 11:02:07 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@kernel.org> | 2020-05-05 10:58:50 +0300 |
| commit | c2cd3452d5f8b66d49a73138fba5baadd5b489bd (patch) | |
| tree | 4b95f0256bee66ab293d0a1dbcc51b2f50b7a393 /drivers/usb/dwc3 | |
| parent | e2e77a94078bd4d459ac8267e7b24eece1e621db (diff) | |
| download | linux-c2cd3452d5f8b66d49a73138fba5baadd5b489bd.tar.bz2 | |
usb: dwc3: support continuous runtime PM with dual role
The DRD module calls dwc3_set_mode() on role switches, i.e. when a device is
being plugged in. In order to support continuous runtime power management when
plugging in / unplugging a cable, we need to call pm_runtime_get_sync() in
this path.
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index edc17155cb2b..7046c681fece 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -121,17 +121,19 @@ static void __dwc3_set_mode(struct work_struct *work) if (dwc->dr_mode != USB_DR_MODE_OTG) return; + pm_runtime_get_sync(dwc->dev); + if (dwc->current_dr_role == DWC3_GCTL_PRTCAP_OTG) dwc3_otg_update(dwc, 0); if (!dwc->desired_dr_role) - return; + goto out; if (dwc->desired_dr_role == dwc->current_dr_role) - return; + goto out; if (dwc->desired_dr_role == DWC3_GCTL_PRTCAP_OTG && dwc->edev) - return; + goto out; switch (dwc->current_dr_role) { case DWC3_GCTL_PRTCAP_HOST: @@ -190,6 +192,9 @@ static void __dwc3_set_mode(struct work_struct *work) break; } +out: + pm_runtime_mark_last_busy(dwc->dev); + pm_runtime_put_autosuspend(dwc->dev); } void dwc3_set_mode(struct dwc3 *dwc, u32 mode) |