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UPSTREAM: usb: dwc3: gadget: move cmd_endtransfer to extra function

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This patch adds the extra function __dwc3_stop_active_transfer to
consolidate the same codepath.

Change-Id: I59d031db6eb52487f443fc6eef11214ca2d95234
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20220306211251.2281335-3-m.grzeschik@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
(cherry picked from commit e192cc7b52)
This commit is contained in:
Michael Grzeschik
2022-03-06 22:12:51 +01:00
committed by Tao Huang
parent 415b0d9d14
commit 0ec00e864a
1 changed files with 37 additions and 32 deletions
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69
drivers/usb/dwc3/gadget.c
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@@ -1797,6 +1797,40 @@ static int __dwc3_gadget_get_frame(struct dwc3 *dwc)
return DWC3_DSTS_SOFFN(reg);
}
/**
* __dwc3_stop_active_transfer - stop the current active transfer
* @dep: isoc endpoint
* @force: set forcerm bit in the command
* @interrupt: command complete interrupt after End Transfer command
*
* When setting force, the ForceRM bit will be set. In that case
* the controller won't update the TRB progress on command
* completion. It also won't clear the HWO bit in the TRB.
* The command will also not complete immediately in that case.
*/
static int __dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force, bool interrupt)
{
struct dwc3_gadget_ep_cmd_params params;
u32 cmd;
int ret;
cmd = DWC3_DEPCMD_ENDTRANSFER;
cmd |= force ? DWC3_DEPCMD_HIPRI_FORCERM : 0;
cmd |= interrupt ? DWC3_DEPCMD_CMDIOC : 0;
cmd |= DWC3_DEPCMD_PARAM(dep->resource_index);
memset(&params, 0, sizeof(params));
ret = dwc3_send_gadget_ep_cmd(dep, cmd, &params);
WARN_ON_ONCE(ret);
dep->resource_index = 0;
if (!interrupt)
dep->flags &= ~DWC3_EP_TRANSFER_STARTED;
else if (!ret)
dep->flags |= DWC3_EP_END_TRANSFER_PENDING;
return ret;
}
/**
* dwc3_gadget_start_isoc_quirk - workaround invalid frame number
* @dep: isoc endpoint
@@ -1972,21 +2006,8 @@ static int __dwc3_gadget_start_isoc(struct dwc3_ep *dep)
* status, issue END_TRANSFER command and retry on the next XferNotReady
* event.
*/
if (ret == -EAGAIN) {
struct dwc3_gadget_ep_cmd_params params;
u32 cmd;
cmd = DWC3_DEPCMD_ENDTRANSFER |
DWC3_DEPCMD_CMDIOC |
DWC3_DEPCMD_PARAM(dep->resource_index);
dep->resource_index = 0;
memset(&params, 0, sizeof(params));
ret = dwc3_send_gadget_ep_cmd(dep, cmd, &params);
if (!ret)
dep->flags |= DWC3_EP_END_TRANSFER_PENDING;
}
if (ret == -EAGAIN)
ret = __dwc3_stop_active_transfer(dep, false, true);
return ret;
}
@@ -3855,10 +3876,6 @@ static void dwc3_reset_gadget(struct dwc3 *dwc)
void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force,
bool interrupt)
{
struct dwc3_gadget_ep_cmd_params params;
u32 cmd;
int ret;
if (!(dep->flags & DWC3_EP_TRANSFER_STARTED) ||
(dep->flags & DWC3_EP_DELAY_STOP) ||
(dep->flags & DWC3_EP_END_TRANSFER_PENDING))
@@ -3891,19 +3908,7 @@ void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force,
* This mode is NOT available on the DWC_usb31 IP.
*/
cmd = DWC3_DEPCMD_ENDTRANSFER;
cmd |= force ? DWC3_DEPCMD_HIPRI_FORCERM : 0;
cmd |= interrupt ? DWC3_DEPCMD_CMDIOC : 0;
cmd |= DWC3_DEPCMD_PARAM(dep->resource_index);
memset(&params, 0, sizeof(params));
ret = dwc3_send_gadget_ep_cmd(dep, cmd, &params);
WARN_ON_ONCE(ret);
dep->resource_index = 0;
if (!interrupt)
dep->flags &= ~DWC3_EP_TRANSFER_STARTED;
else
dep->flags |= DWC3_EP_END_TRANSFER_PENDING;
__dwc3_stop_active_transfer(dep, force, interrupt);
}
EXPORT_SYMBOL_GPL(dwc3_stop_active_transfer);