diff options
| author |   Thinh Nguyen <Thinh.Nguyen@synopsys.com> | 2020-05-05 19:47:15 -0700 |
|---|---|---|
| committer |   Felipe Balbi <balbi@kernel.org> | 2020-05-25 11:09:42 +0300 |
| commit | b10e1c2535777fa393c494d6fa2096c7c3219250 (patch) | |
| tree | 699191612ed218450829ae35c2af2efb74a1c319 /drivers/usb | |
| parent | usb: dwc3: gadget: Handle stream transfers (diff) | |
| download | wireguard-linux-b10e1c2535777fa393c494d6fa2096c7c3219250.tar.xz wireguard-linux-b10e1c2535777fa393c494d6fa2096c7c3219250.zip | |
usb: dwc3: gadget: Use SET_EP_PRIME for NoStream
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@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 3 | ||||
| -rw-r--r-- | 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: |