This patch adds get_status support for HNP polling in langwell_udc.
Signed-off-by: Hao Wu <[email protected]>
---
drivers/usb/gadget/langwell_udc.c | 15 ++++++++++++---
1 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/gadget/langwell_udc.c
b/drivers/usb/gadget/langwell_udc.c
index c8cdf2c..e405861 100644
--- a/drivers/usb/gadget/langwell_udc.c
+++ b/drivers/usb/gadget/langwell_udc.c
@@ -2186,14 +2186,23 @@ static void get_status(struct langwell_udc *dev, u8
request_type, u16 value,
struct langwell_ep *ep;
u16 status_data = 0; /* 16 bits cpu view status data */
int status = 0;
+ int flag = 0;
dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__);
ep = &dev->ep[0];
if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
- /* get device status */
- status_data = dev->dev_status;
+ /* HNP polling for host_request_flag, its index is 0xF000 */
+ if (index == 0xF000) {
+ status_data = dev->gadget.host_request_flag;
+ flag = 1;
+
+ dev_vdbg(&dev->pdev->dev,
+ "request_flag 0x%x\n", status_data);
+
+ } else
+ status_data = dev->dev_status;
} else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) {
/* get interface status */
status_data = 0;
@@ -2218,7 +2227,7 @@ static void get_status(struct langwell_udc *dev, u8
request_type, u16 value,
/* fill in the reqest structure */
*((u16 *) req->req.buf) = cpu_to_le16(status_data);
req->ep = ep;
- req->req.length = 2;
+ req->req.length = flag ? 1 : 2;
req->req.status = -EINPROGRESS;
req->req.actual = 0;
req->req.complete = NULL;
--
1.6.0.6
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