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Diffstat (limited to 'include/usb.h')
-rw-r--r--include/usb.h22
1 files changed, 21 insertions, 1 deletions
diff --git a/include/usb.h b/include/usb.h
index fad04016a3..0ddc0822b4 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -766,6 +766,14 @@ struct dm_usb_ops {
* representation of this hub can be updated (xHCI)
*/
int (*update_hub_device)(struct udevice *bus, struct usb_device *udev);
+
+ /**
+ * get_max_xfer_size() - Get HCD's maximum transfer bytes
+ *
+ * The HCD may have limitation on the maximum bytes to be transferred
+ * in a USB transfer. USB class driver needs to be aware of this.
+ */
+ int (*get_max_xfer_size)(struct udevice *bus, size_t *size);
};
#define usb_get_ops(dev) ((struct dm_usb_ops *)(dev)->driver->ops)
@@ -939,7 +947,7 @@ int usb_new_device(struct usb_device *dev);
int usb_alloc_device(struct usb_device *dev);
/**
- * update_hub_device() - Update HCD's internal representation of hub
+ * usb_update_hub_device() - Update HCD's internal representation of hub
*
* After a hub descriptor is fetched, notify HCD so that its internal
* representation of this hub can be updated.
@@ -950,6 +958,18 @@ int usb_alloc_device(struct usb_device *dev);
int usb_update_hub_device(struct usb_device *dev);
/**
+ * usb_get_max_xfer_size() - Get HCD's maximum transfer bytes
+ *
+ * The HCD may have limitation on the maximum bytes to be transferred
+ * in a USB transfer. USB class driver needs to be aware of this.
+ *
+ * @dev: USB device
+ * @size: maximum transfer bytes
+ * @return 0 if OK, -ve on error
+ */
+int usb_get_max_xfer_size(struct usb_device *dev, size_t *size);
+
+/**
* usb_emul_setup_device() - Set up a new USB device emulation
*
* This is normally called when a new emulation device is bound. It tells