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@@ -0,0 +1,160 @@
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+// SPDX-License-Identifier: GPL-2.0
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+/*
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+ * Common code for usb urb handling, based on the musb-new code
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+ *
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+ * Copyright 2021 Linaro, Rui Miguel Silva <rui.silva@linaro.org>
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+ *
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+ */
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+
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+#include <dm/device.h>
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+#include <dm/device_compat.h>
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+#include <linux/usb/usb_urb_compat.h>
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+
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+#include <time.h>
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+#include <usb.h>
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+
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+#if CONFIG_IS_ENABLED(DM_USB)
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+struct usb_device *usb_dev_get_parent(struct usb_device *udev)
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+{
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+ struct udevice *parent = udev->dev->parent;
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+
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+ /*
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+ * When called from usb-uclass.c: usb_scan_device() udev->dev points
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+ * to the parent udevice, not the actual udevice belonging to the
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+ * udev as the device is not instantiated yet.
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+ *
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+ * If dev is an usb-bus, then we are called from usb_scan_device() for
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+ * an usb-device plugged directly into the root port, return NULL.
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+ */
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+ if (device_get_uclass_id(udev->dev) == UCLASS_USB)
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+ return NULL;
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+
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+ /*
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+ * If these 2 are not the same we are being called from
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+ * usb_scan_device() and udev itself is the parent.
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+ */
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+ if (dev_get_parent_priv(udev->dev) != udev)
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+ return udev;
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+
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+ /* We are being called normally, use the parent pointer */
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+ if (device_get_uclass_id(parent) == UCLASS_USB_HUB)
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+ return dev_get_parent_priv(parent);
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+
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+ return NULL;
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+}
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+#else
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+struct usb_device *usb_dev_get_parent(struct usb_device *udev)
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+{
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+ return udev->parent;
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+}
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+#endif
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+
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+static void usb_urb_complete(struct urb *urb)
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+{
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+ urb->dev->status &= ~USB_ST_NOT_PROC;
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+ urb->dev->act_len = urb->actual_length;
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+
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+ if (urb->status == -EINPROGRESS)
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+ urb->status = 0;
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+}
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+
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+void usb_urb_fill(struct urb *urb, struct usb_host_endpoint *hep,
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+ struct usb_device *dev, int endpoint_type,
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+ unsigned long pipe, void *buffer, int len,
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+ struct devrequest *setup, int interval)
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+{
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+ int epnum = usb_pipeendpoint(pipe);
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+ int is_in = usb_pipein(pipe);
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+ u16 maxpacketsize = is_in ? dev->epmaxpacketin[epnum] :
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+ dev->epmaxpacketout[epnum];
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+
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+ memset(urb, 0, sizeof(struct urb));
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+ memset(hep, 0, sizeof(struct usb_host_endpoint));
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+ INIT_LIST_HEAD(&hep->urb_list);
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+ INIT_LIST_HEAD(&urb->urb_list);
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+ urb->ep = hep;
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+ urb->complete = usb_urb_complete;
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+ urb->status = -EINPROGRESS;
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+ urb->dev = dev;
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+ urb->pipe = pipe;
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+ urb->transfer_buffer = buffer;
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+ urb->transfer_dma = (unsigned long)buffer;
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+ urb->transfer_buffer_length = len;
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+ urb->setup_packet = (unsigned char *)setup;
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+
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+ urb->ep->desc.wMaxPacketSize = __cpu_to_le16(maxpacketsize);
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+ urb->ep->desc.bmAttributes = endpoint_type;
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+ urb->ep->desc.bEndpointAddress = ((is_in ? USB_DIR_IN : USB_DIR_OUT) |
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+ epnum);
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+ urb->ep->desc.bInterval = interval;
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+}
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+
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+int usb_urb_submit(struct usb_hcd *hcd, struct urb *urb)
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+{
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+ const struct usb_urb_ops *ops = hcd->urb_ops;
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+ unsigned long timeout;
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+ int ret;
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+
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+ if (!ops)
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+ return -EINVAL;
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+
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+ ret = ops->urb_enqueue(hcd, urb, 0);
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+ if (ret < 0) {
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+ printf("Failed to enqueue URB to controller\n");
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+ return ret;
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+ }
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+
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+ timeout = get_timer(0) + USB_TIMEOUT_MS(urb->pipe);
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+ do {
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+ if (ctrlc())
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+ return -EIO;
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+ ops->isr(0, hcd);
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+ } while (urb->status == -EINPROGRESS && get_timer(0) < timeout);
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+
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+ if (urb->status == -EINPROGRESS)
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+ ops->urb_dequeue(hcd, urb, -ETIME);
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+
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+ return urb->status;
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+}
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+
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+int usb_urb_submit_control(struct usb_hcd *hcd, struct urb *urb,
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+ struct usb_host_endpoint *hep,
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+ struct usb_device *dev, unsigned long pipe,
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+ void *buffer, int len, struct devrequest *setup,
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+ int interval, enum usb_device_speed speed)
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+{
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+ const struct usb_urb_ops *ops = hcd->urb_ops;
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+
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+ usb_urb_fill(urb, hep, dev, USB_ENDPOINT_XFER_CONTROL, pipe, buffer,
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+ len, setup, 0);
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+
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+ /* Fix speed for non hub-attached devices */
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+ if (!usb_dev_get_parent(dev)) {
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+ dev->speed = speed;
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+ if (ops->hub_control)
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+ return ops->hub_control(hcd, dev, pipe, buffer, len,
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+ setup);
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+ }
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+
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+ return usb_urb_submit(hcd, urb);
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+}
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+
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+int usb_urb_submit_bulk(struct usb_hcd *hcd, struct urb *urb,
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+ struct usb_host_endpoint *hep, struct usb_device *dev,
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+ unsigned long pipe, void *buffer, int len)
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+{
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+ usb_urb_fill(urb, hep, dev, USB_ENDPOINT_XFER_BULK, pipe, buffer, len,
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+ NULL, 0);
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+
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+ return usb_urb_submit(hcd, urb);
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+}
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+
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+int usb_urb_submit_irq(struct usb_hcd *hcd, struct urb *urb,
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+ struct usb_host_endpoint *hep, struct usb_device *dev,
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+ unsigned long pipe, void *buffer, int len, int interval)
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+{
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+ usb_urb_fill(urb, hep, dev, USB_ENDPOINT_XFER_INT, pipe, buffer, len,
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+ NULL, interval);
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+
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+ return usb_urb_submit(hcd, urb);
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+}
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