diff options
| author | Chance.Yang <chance.yang@vatics.com> | 2020-10-06 05:55:49 +0300 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2020-10-20 01:48:58 +0300 |
| commit | 30656802355313a87d832f282d4112b403ed7131 (patch) | |
| tree | b6300459af9d6b7f555f02e5a8c1fbbb6cad83b3 /drivers/usb | |
| parent | 3fade88686e71c9acee4cbeb3ae9706bbc845608 (diff) | |
| download | u-boot-30656802355313a87d832f282d4112b403ed7131.tar.xz | |
usb: dwc2: Fix control OUT transfer issue
In buffer DMA mode, gadget should re-configure EP 0 to received SETUP
packets when doeptsiz.xfersize is equal to a setup packet size(8 bytes)
and EP 0 is in WAIT_FOR_SETUP state.
Since EP 0 is not enabled in WAIT_FOR_SETUP state, SETUP packets is NOT
received from RxFifo and wriiten to the external memory.
Signed-off-by: Chance.Yang <chance.yang@vatics.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c index 1c0505eb28..f17009a29e 100644 --- a/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c +++ b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c @@ -421,6 +421,9 @@ static void process_ep_out_intr(struct dwc2_udc *dev) { u32 ep_intr, ep_intr_status; u8 ep_num = 0; + u32 ep_tsr = 0, xfer_size = 0; + u32 epsiz_reg = reg->out_endp[ep_num].doeptsiz; + u32 req_size = sizeof(struct usb_ctrlrequest); ep_intr = readl(®->daint); debug_cond(DEBUG_OUT_EP != 0, @@ -441,10 +444,17 @@ static void process_ep_out_intr(struct dwc2_udc *dev) if (ep_num == 0) { if (ep_intr_status & TRANSFER_DONE) { - if (dev->ep0state != - WAIT_FOR_OUT_COMPLETE) + ep_tsr = readl(&epsiz_reg); + xfer_size = ep_tsr & + DOEPT_SIZ_XFER_SIZE_MAX_EP0; + + if (xfer_size == req_size && + dev->ep0state == WAIT_FOR_SETUP) { + dwc2_udc_pre_setup(); + } else if (dev->ep0state != + WAIT_FOR_OUT_COMPLETE) { complete_rx(dev, ep_num); - else { + } else { dev->ep0state = WAIT_FOR_SETUP; dwc2_udc_pre_setup(); } |