diff options
| author | Dov Levenglick <dovl@codeaurora.org> | 2014-03-27 23:41:09 +0200 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 11:06:25 -0700 |
| commit | ce73ca32ca2b78eba2a6084d1dec780c2f0fdec4 (patch) | |
| tree | 6d94e758053d11cab4c7277d83bbaa22cc9f2c30 /drivers/usb | |
| parent | c694893be5d6e142aad8ff41fdfbad8ab7df4280 (diff) | |
usb: dwc3: gadget: start resume sequence on remote-wakeup
As per Synopsys databook, the USB controller does not
trigger a wakeup event when remote-wakeup is used.
Hence, after remote-wakeup sequence is complete, and
the device is back at U0 state, it is required that
the resume sequence is initiated manually by SW.
Change-Id: I2f147d4a0644088b948b1798627c7717c35c0104
Signed-off-by: Bar Weiner <bweiner@codeaurora.org>
Signed-off-by: Dov Levenglick <dovl@codeaurora.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index c645345881b7..e6926e5cdc55 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -37,6 +37,8 @@ #include "debug.h" #include "io.h" +static void dwc3_gadget_wakeup_interrupt(struct dwc3 *dwc); + /** * dwc3_gadget_set_test_mode - Enables USB2 Test Modes * @dwc: pointer to our context structure @@ -1447,6 +1449,14 @@ static int dwc3_gadget_wakeup(struct usb_gadget *g) ret = -EINVAL; } + /* + * According to DWC3 databook, the controller does not + * trigger a wakeup event when remote-wakeup is used. + * Hence, after remote-wakeup sequence is complete, and + * the device is back at U0 state, it is required that + * the resume sequence is initiated by SW. + */ + dwc3_gadget_wakeup_interrupt(dwc); out: spin_unlock_irqrestore(&dwc->lock, flags); |