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| author | Felipe Balbi <balbi@ti.com> | 2012-04-25 10:45:05 +0300 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2012-05-02 09:43:09 +0300 |
| commit | c12a0d862a900707cdc683efad39d05697d9964d (patch) | |
| tree | 649cfb57d0b1ec27fab9eb0bcb792deeda91909f | |
| parent | 7ed6d227c3d29e156f7affbad4d4679d1e409ef2 (diff) | |
| download | op-kernel-dev-c12a0d862a900707cdc683efad39d05697d9964d.zip op-kernel-dev-c12a0d862a900707cdc683efad39d05697d9964d.tar.gz | |
usb: dwc3: ep0: implement support for Set Isoch Delay request
This is basically a noop for DWC3. We don't have
to do anything. Basically we test if the request
parameters are correct, cache the Isochronous
Delay and return success.
Signed-off-by: Felipe Balbi <balbi@ti.com>
| -rw-r--r-- | drivers/usb/dwc3/core.h | 2 | ||||
| -rw-r--r-- | drivers/usb/dwc3/ep0.c | 26 |
2 files changed, 28 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 39fbd15..ef28bd5 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -575,6 +575,7 @@ struct dwc3_request { * @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround * @needs_fifo_resize: not all users might want fifo resizing, flag it * @resize_fifos: tells us it's ok to reconfigure our TxFIFO sizes. + * @isoch_delay: wValue from Set Isochronous Delay request; * @u2sel: parameter from Set SEL request. * @u2pel: parameter from Set SEL request. * @u1sel: parameter from Set SEL request. @@ -645,6 +646,7 @@ struct dwc3 { enum dwc3_link_state link_state; enum dwc3_device_state dev_state; + u16 isoch_delay; u16 u2sel; u16 u2pel; u8 u1sel; diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 9683d98..8d41b6a 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -569,6 +569,28 @@ static int dwc3_ep0_set_sel(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) return __dwc3_gadget_ep0_queue(dep, &dwc->ep0_usb_req); } +static int dwc3_ep0_set_isoch_delay(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) +{ + u16 wLength; + u16 wValue; + u16 wIndex; + + wValue = le16_to_cpu(ctrl->wValue); + wLength = le16_to_cpu(ctrl->wLength); + wIndex = le16_to_cpu(ctrl->wIndex); + + if (wIndex || wLength) + return -EINVAL; + + /* + * REVISIT It's unclear from Databook what to do with this + * value. For now, just cache it. + */ + dwc->isoch_delay = wValue; + + return 0; +} + static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) { int ret; @@ -598,6 +620,10 @@ static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) dev_vdbg(dwc->dev, "USB_REQ_SET_SEL\n"); ret = dwc3_ep0_set_sel(dwc, ctrl); break; + case USB_REQ_SET_ISOCH_DELAY: + dev_vdbg(dwc->dev, "USB_REQ_SET_ISOCH_DELAY\n"); + ret = dwc3_ep0_set_isoch_delay(dwc, ctrl); + break; default: dev_vdbg(dwc->dev, "Forwarding to gadget driver\n"); ret = dwc3_ep0_delegate_req(dwc, ctrl); |
