Changeset 820d9bc in mainline for uspace/lib/usbhost

Timestamp:

2017-11-22T13:54:05Z (8 years ago)

Author:

Ondřej Hlavatý <aearsis@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

d42ba37

Parents:

64fea02

Message:

usb: move toggle resetting to libusbhost

Location:

uspace/lib/usbhost

Files:

• include/usb/host/hcd.h (modified) (1 diff)
• src/hcd.c (modified) (2 diffs)

uspace/lib/usbhost/include/usb/host/hcd.h

@@ -112 +112 @@
     const char *);
 
+/** How many toggles need to be reset */
+typedef enum {
+        RESET_NONE,
+        RESET_EP,
+        RESET_ALL
+} toggle_reset_mode_t;
+
 #endif
 

uspace/lib/usbhost/src/hcd.c

@@ -147 +147 @@
 }
 
+/** Check setup packet data for signs of toggle reset.
+ *
+ * @param[in] requst Setup requst data.
+ *
+ * @retval -1 No endpoints need reset.
+ * @retval 0 All endpoints need reset.
+ * @retval >0 Specified endpoint needs reset.
+ *
+ */
+static toggle_reset_mode_t hcd_get_request_toggle_reset_mode(
+    const usb_device_request_setup_packet_t *request)
+{
+        assert(request);
+        switch (request->request)
+        {
+        /* Clear Feature ENPOINT_STALL */
+        case USB_DEVREQ_CLEAR_FEATURE: /*resets only cleared ep */
+                /* 0x2 ( HOST to device | STANDART | TO ENPOINT) */
+                if ((request->request_type == 0x2) &&
+                    (request->value == USB_FEATURE_ENDPOINT_HALT))
+                        return RESET_EP;
+                break;
+        case USB_DEVREQ_SET_CONFIGURATION:
+        case USB_DEVREQ_SET_INTERFACE:
+                /* Recipient must be device, this resets all endpoints,
+                 * In fact there should be no endpoints but EP 0 registered
+                 * as different interfaces use different endpoints,
+                 * unless you're changing configuration or alternative
+                 * interface of an already setup device. */
+                if (!(request->request_type & SETUP_REQUEST_TYPE_DEVICE_TO_HOST))
+                        return RESET_ALL;
+                break;
+        default:
+                break;
+        }
+
+        return RESET_NONE;
+}
+
 /** Prepare generic usb_transfer_batch and schedule it.
  * @param hcd Host controller driver.
@@ -207 +246 @@
         if (ep->transfer_type == USB_TRANSFER_CONTROL)
                 batch->toggle_reset_mode
-                        = usb_request_get_toggle_reset_mode(&batch->setup.packet);
+                        = hcd_get_request_toggle_reset_mode(&batch->setup.packet);
 
         const int ret = hcd->ops.schedule(hcd, batch);