diff options
| author | Felipe Balbi <balbi@ti.com> | 2014-02-26 17:17:07 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-03-05 21:40:03 +0100 |
| commit | bc5ba2e0b829c9397f96df1191c7d2319ebc36d9 (patch) | |
| tree | 165101f5daaf33f913eb304593eedc24300a819a /drivers/usb | |
| parent | usb: dwc3: gadget: add 'force' argument to stop_active_transfer (diff) | |
| download | linux-bc5ba2e0b829c9397f96df1191c7d2319ebc36d9.tar.xz linux-bc5ba2e0b829c9397f96df1191c7d2319ebc36d9.zip | |
usb: dwc3: gadget: call gadget driver's ->suspend/->resume
When going into bus suspend/resume we _must_
call gadget driver's ->suspend/->resume callbacks
accordingly. This patch implements that very feature
which has been missing forever.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index f1cb0984046e..9f82436b4b1e 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2028,6 +2028,24 @@ static void dwc3_disconnect_gadget(struct dwc3 *dwc) } } +static void dwc3_suspend_gadget(struct dwc3 *dwc) +{ + if (dwc->gadget_driver && dwc->gadget_driver->disconnect) { + spin_unlock(&dwc->lock); + dwc->gadget_driver->suspend(&dwc->gadget); + spin_lock(&dwc->lock); + } +} + +static void dwc3_resume_gadget(struct dwc3 *dwc) +{ + if (dwc->gadget_driver && dwc->gadget_driver->disconnect) { + spin_unlock(&dwc->lock); + dwc->gadget_driver->resume(&dwc->gadget); + spin_lock(&dwc->lock); + } +} + static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum, bool force) { struct dwc3_ep *dep; @@ -2414,6 +2432,23 @@ static void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc, dwc->link_state = next; + switch (next) { + case DWC3_LINK_STATE_U1: + if (dwc->speed == USB_SPEED_SUPER) + dwc3_suspend_gadget(dwc); + break; + case DWC3_LINK_STATE_U2: + case DWC3_LINK_STATE_U3: + dwc3_suspend_gadget(dwc); + break; + case DWC3_LINK_STATE_RESUME: + dwc3_resume_gadget(dwc); + break; + default: + /* do nothing */ + break; + } + dev_vdbg(dwc->dev, "%s link %d\n", __func__, dwc->link_state); } |