DWC_usb32 v1.00a and later can use SET_EP_PRIME command to reinitiate a
stream. Use the command to handle NoStream rejection instead of ending
and restarting the endpoint.
Signed-off-by: Thinh Nguyen <thinhn@xxxxxxxxxxxx>
---
drivers/usb/dwc3/core.h | 3 +++
drivers/usb/dwc3/gadget.c | 13 ++++++++++---
2 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 4def088329c7..013f42a2b5dc 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -1161,6 +1161,9 @@ struct dwc3 {
#define DWC31_REVISION_180A 0x3138302a
#define DWC31_REVISION_190A 0x3139302a
+#define DWC32_REVISION_ANY 0x0
+#define DWC32_REVISION_100A 0x3130302a
+
u32 version_type;
#define DWC31_VERSIONTYPE_ANY 0x0
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 0380f76151a1..fea4fde1b5e3 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2844,9 +2844,16 @@ static void dwc3_gadget_endpoint_stream_event(struct dwc3_ep *dep,
* hosts, force to reinitate the stream until the host is ready
* instead of waiting for the host to prime the endpoint.
*/
- dep->flags |= DWC3_EP_DELAY_START;
- dwc3_stop_active_transfer(dep, true, true);
- return;
+ if (DWC3_VER_IS_WITHIN(DWC32, 100A, ANY)) {
+ unsigned int cmd = DWC3_DGCMD_SET_ENDPOINT_PRIME;
+
+ dwc3_send_gadget_generic_command(dwc, cmd, dep->number);
+ } else {
+ dep->flags |= DWC3_EP_DELAY_START;
+ dwc3_stop_active_transfer(dep, true, true);
+ return;
+ }
+ break;
}
out:
--
2.11.0
