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;
int ret;
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(&dep->request_list)) {
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:
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;
spin_lock_irqsave(&dwc->lock, flags);
if (!dep->endpoint.desc) {
dev_err(dwc->dev, "%s: can't queue to disabled endpoint\n",
dep->name);
ret = -ESHUTDOWN;
goto out;
}
/* we share one TRB for ep0/1 */
if (!list_empty(&dep->pending_list)) {
ret = -EBUSY;
goto out;
}
ret = __dwc3_gadget_ep0_queue(dep, req);
out:
spin_unlock_irqrestore(&dwc->lock, flags);
return ret;
}
int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value)
{
struct dwc3_ep *dep = to_dwc3_ep(ep);
struct dwc3 *dwc = dep->dwc;
dwc3_ep0_stall_and_restart(dwc);
return 0;
}
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;
}
int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value)
{
struct dwc3_ep *dep = to_dwc3_ep(ep);
struct dwc3 *dwc = dep->dwc;
dbg_event(dep->number, "EP0STAL", value);
dwc3_ep0_stall_and_restart(dwc);
return 0;
}
int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value)
{
struct dwc3_ep *dep = to_dwc3_ep(ep);
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
int ret;
spin_lock_irqsave(&dwc->lock, flags);
ret = __dwc3_gadget_ep0_set_halt(ep, value);
spin_unlock_irqrestore(&dwc->lock, flags);
return ret;
}
static void dwc3_ep0_set_sel_cmpl(struct usb_ep *ep, struct usb_request *req)
{
struct dwc3_ep *dep = to_dwc3_ep(ep);
struct dwc3 *dwc = dep->dwc;
u32 param = 0;
u32 reg;
struct timing {
u8 u1sel;
u8 u1pel;
u16 u2sel;
u16 u2pel;
} __packed timing;
int ret;
memcpy(&timing, req->buf, sizeof(timing));
dwc->u1sel = timing.u1sel;
dwc->u1pel = timing.u1pel;
dwc->u2sel = le16_to_cpu(timing.u2sel);
dwc->u2pel = le16_to_cpu(timing.u2pel);
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
if (reg & DWC3_DCTL_INITU2ENA)
param = dwc->u2pel;
if (reg & DWC3_DCTL_INITU1ENA)
param = dwc->u1pel;
/*
* According to Synopsys Databook, if parameter is
* greater than 125, a value of zero should be
* programmed in the register.
*/
if (param > 125)
param = 0;
/* now that we have the time, issue DGCMD Set Sel */
ret = dwc3_send_gadget_generic_command(dwc,
DWC3_DGCMD_SET_PERIODIC_PAR, param);
WARN_ON(ret < 0);
}
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;
spin_lock_irqsave(&dwc->lock, flags);
if (!dep->endpoint.desc) {
dwc3_trace(trace_dwc3_ep0,
"trying to queue request %p to disabled %s",
request, dep->name);
ret = -ESHUTDOWN;
goto out;
}
/* we share one TRB for ep0/1 */
if (!list_empty(&dep->request_list)) {
ret = -EBUSY;
goto out;
}
dwc3_trace(trace_dwc3_ep0,
"queueing request %p to %s length %d state '%s'",
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;
}
