diff options
Diffstat (limited to 'drivers/usb/dwc3/ep0.c')
| -rw-r--r-- | drivers/usb/dwc3/ep0.c | 782 |
1 files changed, 782 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c new file mode 100644 index 000000000000..4698fe013769 --- /dev/null +++ b/drivers/usb/dwc3/ep0.c @@ -0,0 +1,782 @@ +/** + * ep0.c - DesignWare USB3 DRD Controller Endpoint 0 Handling + * + * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com + * All rights reserved. + * + * Authors: Felipe Balbi <balbi@ti.com>, + * Sebastian Andrzej Siewior <bigeasy@linutronix.de> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The names of the above-listed copyright holders may not be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2, as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/list.h> +#include <linux/dma-mapping.h> + +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> + +#include "core.h" +#include "gadget.h" +#include "io.h" + +static void dwc3_ep0_inspect_setup(struct dwc3 *dwc, + const struct dwc3_event_depevt *event); + +static const char *dwc3_ep0_state_string(enum dwc3_ep0_state state) +{ + switch (state) { + case EP0_UNCONNECTED: + return "Unconnected"; + case EP0_IDLE: + return "Idle"; + case EP0_IN_DATA_PHASE: + return "IN Data Phase"; + case EP0_OUT_DATA_PHASE: + return "OUT Data Phase"; + case EP0_IN_WAIT_GADGET: + return "IN Wait Gadget"; + case EP0_OUT_WAIT_GADGET: + return "OUT Wait Gadget"; + case EP0_IN_WAIT_NRDY: + return "IN Wait NRDY"; + case EP0_OUT_WAIT_NRDY: + return "OUT Wait NRDY"; + case EP0_IN_STATUS_PHASE: + return "IN Status Phase"; + case EP0_OUT_STATUS_PHASE: + return "OUT Status Phase"; + case EP0_STALL: + return "Stall"; + default: + return "UNKNOWN"; + } +} + +static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma, + u32 len) +{ + struct dwc3_gadget_ep_cmd_params params; + struct dwc3_trb_hw *trb_hw; + struct dwc3_trb trb; + struct dwc3_ep *dep; + + int ret; + + dep = dwc->eps[epnum]; + + trb_hw = dwc->ep0_trb; + memset(&trb, 0, sizeof(trb)); + + switch (dwc->ep0state) { + case EP0_IDLE: + trb.trbctl = DWC3_TRBCTL_CONTROL_SETUP; + break; + + case EP0_IN_WAIT_NRDY: + case EP0_OUT_WAIT_NRDY: + case EP0_IN_STATUS_PHASE: + case EP0_OUT_STATUS_PHASE: + if (dwc->three_stage_setup) + trb.trbctl = DWC3_TRBCTL_CONTROL_STATUS3; + else + trb.trbctl = DWC3_TRBCTL_CONTROL_STATUS2; + + if (dwc->ep0state == EP0_IN_WAIT_NRDY) + dwc->ep0state = EP0_IN_STATUS_PHASE; + else if (dwc->ep0state == EP0_OUT_WAIT_NRDY) + dwc->ep0state = EP0_OUT_STATUS_PHASE; + break; + + case EP0_IN_WAIT_GADGET: + dwc->ep0state = EP0_IN_WAIT_NRDY; + return 0; + break; + + case EP0_OUT_WAIT_GADGET: + dwc->ep0state = EP0_OUT_WAIT_NRDY; + return 0; + + break; + + case EP0_IN_DATA_PHASE: + case EP0_OUT_DATA_PHASE: + trb.trbctl = DWC3_TRBCTL_CONTROL_DATA; + break; + + default: + dev_err(dwc->dev, "%s() can't in state %d\n", __func__, + dwc->ep0state); + return -EINVAL; + } + + trb.bplh = buf_dma; + trb.length = len; + + trb.hwo = 1; + trb.lst = 1; + trb.ioc = 1; + trb.isp_imi = 1; + + dwc3_trb_to_hw(&trb, trb_hw); + + memset(¶ms, 0, sizeof(params)); + params.param0.depstrtxfer.transfer_desc_addr_high = + upper_32_bits(dwc->ep0_trb_addr); + params.param1.depstrtxfer.transfer_desc_addr_low = + lower_32_bits(dwc->ep0_trb_addr); + + ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, + DWC3_DEPCMD_STARTTRANSFER, ¶ms); + if (ret < 0) { + dev_dbg(dwc->dev, "failed to send STARTTRANSFER command\n"); + return ret; + } + + dep->res_trans_idx = dwc3_gadget_ep_get_transfer_index(dwc, + dep->number); + + return 0; +} + +static int __dwc3_gadget_ep0_queue(struct dwc3_ep *dep, + struct dwc3_request *req) +{ + struct dwc3 *dwc = dep->dwc; + int ret; + + req->request.actual = 0; + req->request.status = -EINPROGRESS; + req->direction = dep->direction; + req->epnum = dep->number; + + list_add_tail(&req->list, &dep->request_list); + dwc3_map_buffer_to_dma(req); + + ret = dwc3_ep0_start_trans(dwc, dep->number, req->request.dma, + req->request.length); + if (ret < 0) { + list_del(&req->list); + dwc3_unmap_buffer_from_dma(req); + } + + return ret; +} + +int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request, + gfp_t gfp_flags) +{ + struct dwc3_request *req = to_dwc3_request(request); + struct dwc3_ep *dep = to_dwc3_ep(ep); + struct dwc3 *dwc = dep->dwc; + + unsigned long flags; + + int ret; + + switch (dwc->ep0state) { + case EP0_IN_DATA_PHASE: + case EP0_IN_WAIT_GADGET: + case EP0_IN_WAIT_NRDY: + case EP0_IN_STATUS_PHASE: + dep = dwc->eps[1]; + break; + + case EP0_OUT_DATA_PHASE: + case EP0_OUT_WAIT_GADGET: + case EP0_OUT_WAIT_NRDY: + case EP0_OUT_STATUS_PHASE: + dep = dwc->eps[0]; + break; + default: + return -EINVAL; + } + + spin_lock_irqsave(&dwc->lock, flags); + if (!dep->desc) { + dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n", + request, dep->name); + ret = -ESHUTDOWN; + goto out; + } + + /* we share one TRB for ep0/1 */ + if (!list_empty(&dwc->eps[0]->request_list) || + !list_empty(&dwc->eps[1]->request_list) || + dwc->ep0_status_pending) { + ret = -EBUSY; + goto out; + } + + dev_vdbg(dwc->dev, "queueing request %p to %s length %d, state '%s'\n", + request, dep->name, request->length, + dwc3_ep0_state_string(dwc->ep0state)); + + ret = __dwc3_gadget_ep0_queue(dep, req); + +out: + spin_unlock_irqrestore(&dwc->lock, flags); + + return ret; +} + +static void dwc3_ep0_stall_and_restart(struct dwc3 *dwc) +{ + /* stall is always issued on EP0 */ + __dwc3_gadget_ep_set_halt(dwc->eps[0], 1); + dwc->eps[0]->flags &= ~DWC3_EP_STALL; + dwc->ep0state = EP0_IDLE; + dwc3_ep0_out_start(dwc); +} + +void dwc3_ep0_out_start(struct dwc3 *dwc) +{ + struct dwc3_ep *dep; + int ret; + + dep = dwc->eps[0]; + + ret = dwc3_ep0_start_trans(dwc, 0, dwc->ctrl_req_addr, 8); + WARN_ON(ret < 0); +} + +/* + * Send a zero length packet for the status phase of the control transfer + */ +static void dwc3_ep0_do_setup_status(struct dwc3 *dwc, + const struct dwc3_event_depevt *event) +{ + struct dwc3_ep *dep; + int ret; + u32 epnum; + + epnum = event->endpoint_number; + dep = dwc->eps[epnum]; + + if (epnum) + dwc->ep0state = EP0_IN_STATUS_PHASE; + else + dwc->ep0state = EP0_OUT_STATUS_PHASE; + + /* + * Not sure Why I need a buffer for a zero transfer. Maybe the + * HW reacts strange on a NULL pointer + */ + ret = dwc3_ep0_start_trans(dwc, epnum, dwc->ctrl_req_addr, 0); + if (ret) { + dev_dbg(dwc->dev, "failed to start transfer, stalling\n"); + dwc3_ep0_stall_and_restart(dwc); + } +} + +static struct dwc3_ep *dwc3_wIndex_to_dep(struct dwc3 *dwc, __le16 wIndex_le) +{ + struct dwc3_ep *dep; + u32 windex = le16_to_cpu(wIndex_le); + u32 epnum; + + epnum = (windex & USB_ENDPOINT_NUMBER_MASK) << 1; + if ((windex & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) + epnum |= 1; + + dep = dwc->eps[epnum]; + if (dep->flags & DWC3_EP_ENABLED) + return dep; + + return NULL; +} + +static void dwc3_ep0_send_status_response(struct dwc3 *dwc) +{ + u32 epnum; + + if (dwc->ep0state == EP0_IN_DATA_PHASE) + epnum = 1; + else + epnum = 0; + + dwc3_ep0_start_trans(dwc, epnum, dwc->ctrl_req_addr, + dwc->ep0_usb_req.length); + dwc->ep0_status_pending = 1; +} + +/* + * ch 9.4.5 + */ +static int dwc3_ep0_handle_status(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) +{ + struct dwc3_ep *dep; + u32 recip; + u16 usb_status = 0; + __le16 *response_pkt; + + recip = ctrl->bRequestType & USB_RECIP_MASK; + switch (recip) { + case USB_RECIP_DEVICE: + /* + * We are self-powered. U1/U2/LTM will be set later + * once we handle this states. RemoteWakeup is 0 on SS + */ + usb_status |= dwc->is_selfpowered << USB_DEVICE_SELF_POWERED; + break; + + case USB_RECIP_INTERFACE: + /* + * Function Remote Wake Capable D0 + * Function Remote Wakeup D1 + */ + break; + + case USB_RECIP_ENDPOINT: + dep = dwc3_wIndex_to_dep(dwc, ctrl->wIndex); + if (!dep) + return -EINVAL; + + if (dep->flags & DWC3_EP_STALL) + usb_status = 1 << USB_ENDPOINT_HALT; + break; + default: + return -EINVAL; + }; + + response_pkt = (__le16 *) dwc->setup_buf; + *response_pkt = cpu_to_le16(usb_status); + dwc->ep0_usb_req.length = sizeof(*response_pkt); + dwc3_ep0_send_status_response(dwc); + + return 0; +} + +static int dwc3_ep0_handle_feature(struct dwc3 *dwc, + struct usb_ctrlrequest *ctrl, int set) +{ + struct dwc3_ep *dep; + u32 recip; + u32 wValue; + u32 wIndex; + u32 reg; + int ret; + u32 mode; + + wValue = le16_to_cpu(ctrl->wValue); + wIndex = le16_to_cpu(ctrl->wIndex); + recip = ctrl->bRequestType & USB_RECIP_MASK; + switch (recip) { + case USB_RECIP_DEVICE: + + /* + * 9.4.1 says only only for SS, in AddressState only for + * default control pipe + */ + switch (wValue) { + case USB_DEVICE_U1_ENABLE: + case USB_DEVICE_U2_ENABLE: + case USB_DEVICE_LTM_ENABLE: + if (dwc->dev_state != DWC3_CONFIGURED_STATE) + return -EINVAL; + if (dwc->speed != DWC3_DSTS_SUPERSPEED) + return -EINVAL; + } + + /* XXX add U[12] & LTM */ + switch (wValue) { + case USB_DEVICE_REMOTE_WAKEUP: + break; + case USB_DEVICE_U1_ENABLE: + break; + case USB_DEVICE_U2_ENABLE: + break; + case USB_DEVICE_LTM_ENABLE: + break; + + case USB_DEVICE_TEST_MODE: + if ((wIndex & 0xff) != 0) + return -EINVAL; + if (!set) + return -EINVAL; + + mode = wIndex >> 8; + reg = dwc3_readl(dwc->regs, DWC3_DCTL); + reg &= ~DWC3_DCTL_TSTCTRL_MASK; + + switch (mode) { + case TEST_J: + case TEST_K: + case TEST_SE0_NAK: + case TEST_PACKET: + case TEST_FORCE_EN: + reg |= mode << 1; + break; + default: + return -EINVAL; + } + dwc3_writel(dwc->regs, DWC3_DCTL, reg); + break; + default: + return -EINVAL; + } + break; + + case USB_RECIP_INTERFACE: + switch (wValue) { + case USB_INTRF_FUNC_SUSPEND: + if (wIndex & USB_INTRF_FUNC_SUSPEND_LP) + /* XXX enable Low power suspend */ + ; + if (wIndex & USB_INTRF_FUNC_SUSPEND_RW) + /* XXX enable remote wakeup */ + ; + break; + default: + return -EINVAL; + } + break; + + case USB_RECIP_ENDPOINT: + switch (wValue) { + case USB_ENDPOINT_HALT: + + dep = dwc3_wIndex_to_dep(dwc, ctrl->wIndex); + if (!dep) + return -EINVAL; + ret = __dwc3_gadget_ep_set_halt(dep, set); + if (ret) + return -EINVAL; + break; + default: + return -EINVAL; + } + break; + + default: + return -EINVAL; + }; + + dwc->ep0state = EP0_IN_WAIT_NRDY; + + return 0; +} + +static int dwc3_ep0_set_address(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) +{ + int ret = 0; + u32 addr; + u32 reg; + + addr = le16_to_cpu(ctrl->wValue); + if (addr > 127) + return -EINVAL; + + switch (dwc->dev_state) { + case DWC3_DEFAULT_STATE: + case DWC3_ADDRESS_STATE: + /* + * Not sure if we should program DevAddr now or later + */ + reg = dwc3_readl(dwc->regs, DWC3_DCFG); + reg &= ~(DWC3_DCFG_DEVADDR_MASK); + reg |= DWC3_DCFG_DEVADDR(addr); + dwc3_writel(dwc->regs, DWC3_DCFG, reg); + + if (addr) + dwc->dev_state = DWC3_ADDRESS_STATE; + else + dwc->dev_state = DWC3_DEFAULT_STATE; + break; + + case DWC3_CONFIGURED_STATE: + ret = -EINVAL; + break; + } + dwc->ep0state = EP0_IN_WAIT_NRDY; + return ret; +} + +static int dwc3_ep0_delegate_req(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) +{ + int ret; + + spin_unlock(&dwc->lock); + ret = dwc->gadget_driver->setup(&dwc->gadget, ctrl); + spin_lock(&dwc->lock); + return ret; +} + +static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) +{ + u32 cfg; + int ret; + + cfg = le16_to_cpu(ctrl->wValue); + + switch (dwc->dev_state) { + case DWC3_DEFAULT_STATE: + return -EINVAL; + break; + + case DWC3_ADDRESS_STATE: + ret = dwc3_ep0_delegate_req(dwc, ctrl); + /* if the cfg matches and the cfg is non zero */ + if (!ret && cfg) + dwc->dev_state = DWC3_CONFIGURED_STATE; + break; + + case DWC3_CONFIGURED_STATE: + ret = dwc3_ep0_delegate_req(dwc, ctrl); + if (!cfg) + dwc->dev_state = DWC3_ADDRESS_STATE; + break; + } + return 0; +} + +static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) +{ + int ret; + + switch (ctrl->bRequest) { + case USB_REQ_GET_STATUS: + dev_vdbg(dwc->dev, "USB_REQ_GET_STATUS\n"); + ret = dwc3_ep0_handle_status(dwc, ctrl); + break; + case USB_REQ_CLEAR_FEATURE: + dev_vdbg(dwc->dev, "USB_REQ_CLEAR_FEATURE\n"); + ret = dwc3_ep0_handle_feature(dwc, ctrl, 0); + break; + case USB_REQ_SET_FEATURE: + dev_vdbg(dwc->dev, "USB_REQ_SET_FEATURE\n"); + ret = dwc3_ep0_handle_feature(dwc, ctrl, 1); + break; + case USB_REQ_SET_ADDRESS: + dev_vdbg(dwc->dev, "USB_REQ_SET_ADDRESS\n"); + ret = dwc3_ep0_set_address(dwc, ctrl); + break; + case USB_REQ_SET_CONFIGURATION: + dev_vdbg(dwc->dev, "USB_REQ_SET_CONFIGURATION\n"); + ret = dwc3_ep0_set_config(dwc, ctrl); + break; + default: + dev_vdbg(dwc->dev, "Forwarding to gadget driver\n"); + ret = dwc3_ep0_delegate_req(dwc, ctrl); + break; + }; + + return ret; +} + +static void dwc3_ep0_inspect_setup(struct dwc3 *dwc, + const struct dwc3_event_depevt *event) +{ + struct usb_ctrlrequest *ctrl = dwc->ctrl_req; + int ret; + u32 len; + + if (!dwc->gadget_driver) + goto err; + + len = le16_to_cpu(ctrl->wLength); + if (!len) { + dwc->ep0state = EP0_IN_WAIT_GADGET; + dwc->three_stage_setup = 0; + } else { + dwc->three_stage_setup = 1; + if (ctrl->bRequestType & USB_DIR_IN) + dwc->ep0state = EP0_IN_DATA_PHASE; + else + dwc->ep0state = EP0_OUT_DATA_PHASE; + } + + if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) + ret = dwc3_ep0_std_request(dwc, ctrl); + else + ret = dwc3_ep0_delegate_req(dwc, ctrl); + + if (ret >= 0) + return; + +err: + dwc3_ep0_stall_and_restart(dwc); +} + +static void dwc3_ep0_complete_data(struct dwc3 *dwc, + const struct dwc3_event_depevt *event) +{ + struct dwc3_request *r = NULL; + struct usb_request *ur; + struct dwc3_trb trb; + struct dwc3_ep *dep; + u32 transfered; + u8 epnum; + + epnum = event->endpoint_number; + dep = dwc->eps[epnum]; + + if (!dwc->ep0_status_pending) { + r = next_request(&dep->request_list); + ur = &r->request; + } else { + ur = &dwc->ep0_usb_req; + dwc->ep0_status_pending = 0; + } + + dwc3_trb_to_nat(dwc->ep0_trb, &trb); + + transfered = ur->length - trb.length; + ur->actual += transfered; + + if ((epnum & 1) && ur->actual < ur->length) { + /* for some reason we did not get everything out */ + + dwc3_ep0_stall_and_restart(dwc); + dwc3_gadget_giveback(dep, r, -ECONNRESET); + } else { + /* + * handle the case where we have to send a zero packet. This + * seems to be case when req.length > maxpacket. Could it be? + */ + /* The transfer is complete, wait for HOST */ + if (epnum & 1) + dwc->ep0state = EP0_IN_WAIT_NRDY; + else + dwc->ep0state = EP0_OUT_WAIT_NRDY; + + if (r) + dwc3_gadget_giveback(dep, r, 0); + } +} + +static void dwc3_ep0_complete_req(struct dwc3 *dwc, + const struct dwc3_event_depevt *event) +{ + struct dwc3_request *r; + struct dwc3_ep *dep; + u8 epnum; + + epnum = event->endpoint_number; + dep = dwc->eps[epnum]; + + if (!list_empty(&dep->request_list)) { + r = next_request(&dep->request_list); + + dwc3_gadget_giveback(dep, r, 0); + } + + dwc->ep0state = EP0_IDLE; + dwc3_ep0_out_start(dwc); +} + +static void dwc3_ep0_xfer_complete(struct dwc3 *dwc, + const struct dwc3_event_depevt *event) +{ + switch (dwc->ep0state) { + case EP0_IDLE: + dwc3_ep0_inspect_setup(dwc, event); + break; + + case EP0_IN_DATA_PHASE: + case EP0_OUT_DATA_PHASE: + dwc3_ep0_complete_data(dwc, event); + break; + + case EP0_IN_STATUS_PHASE: + case EP0_OUT_STATUS_PHASE: + dwc3_ep0_complete_req(dwc, event); + break; + + case EP0_IN_WAIT_NRDY: + case EP0_OUT_WAIT_NRDY: + case EP0_IN_WAIT_GADGET: + case EP0_OUT_WAIT_GADGET: + case EP0_UNCONNECTED: + case EP0_STALL: + break; + } +} + +static void dwc3_ep0_xfernotready(struct dwc3 *dwc, + const struct dwc3_event_depevt *event) +{ + switch (dwc->ep0state) { + case EP0_IN_WAIT_GADGET: + dwc->ep0state = EP0_IN_WAIT_NRDY; + break; + case EP0_OUT_WAIT_GADGET: + dwc->ep0state = EP0_OUT_WAIT_NRDY; + break; + + case EP0_IN_WAIT_NRDY: + case EP0_OUT_WAIT_NRDY: + dwc3_ep0_do_setup_status(dwc, event); + break; + + case EP0_IDLE: + case EP0_IN_STATUS_PHASE: + case EP0_OUT_STATUS_PHASE: + case EP0_IN_DATA_PHASE: + case EP0_OUT_DATA_PHASE: + case EP0_UNCONNECTED: + case EP0_STALL: + break; + } +} + +void dwc3_ep0_interrupt(struct dwc3 *dwc, + const const struct dwc3_event_depevt *event) +{ + u8 epnum = event->endpoint_number; + + dev_dbg(dwc->dev, "%s while ep%d%s in state '%s'\n", + dwc3_ep_event_string(event->endpoint_event), + epnum, (epnum & 1) ? "in" : "out", + dwc3_ep0_state_string(dwc->ep0state)); + + switch (event->endpoint_event) { + case DWC3_DEPEVT_XFERCOMPLETE: + dwc3_ep0_xfer_complete(dwc, event); + break; + + case DWC3_DEPEVT_XFERNOTREADY: + dwc3_ep0_xfernotready(dwc, event); + break; + + case DWC3_DEPEVT_XFERINPROGRESS: + case DWC3_DEPEVT_RXTXFIFOEVT: + case DWC3_DEPEVT_STREAMEVT: + case DWC3_DEPEVT_EPCMDCMPLT: + break; + } +} |