+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
* usb_match_device() modified from Linux kernel v4.0.
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm/lists.h>
#include <dm/uclass-internal.h>
-DECLARE_GLOBAL_DATA_PTR;
-
extern bool usb_started; /* flag for the started/stopped USB status */
static bool asynch_allowed;
return ops->update_hub_device(bus, udev);
}
+int usb_get_max_xfer_size(struct usb_device *udev, size_t *size)
+{
+ struct udevice *bus = udev->controller_dev;
+ struct dm_usb_ops *ops = usb_get_ops(bus);
+
+ if (!ops->get_max_xfer_size)
+ return -ENOSYS;
+
+ return ops->get_max_xfer_size(bus, size);
+}
+
int usb_stop(void)
{
struct udevice *bus;
+ struct udevice *rh;
struct uclass *uc;
struct usb_uclass_priv *uc_priv;
int err = 0, ret;
ret = device_remove(bus, DM_REMOVE_NORMAL);
if (ret && !err)
err = ret;
- }
-#ifdef CONFIG_BLK
- ret = blk_unbind_all(IF_TYPE_USB);
- if (ret && !err)
- err = ret;
-#endif
-#ifdef CONFIG_SANDBOX
- struct udevice *dev;
- /* Reset all enulation devices */
- ret = uclass_get(UCLASS_USB_EMUL, &uc);
- if (ret)
- return ret;
+ /* Locate root hub device */
+ device_find_first_child(bus, &rh);
+ if (rh) {
+ /*
+ * All USB devices are children of root hub.
+ * Unbinding root hub will unbind all of its children.
+ */
+ ret = device_unbind(rh);
+ if (ret && !err)
+ err = ret;
+ }
+ }
- uclass_foreach_dev(dev, uc)
- usb_emul_reset(dev);
-#endif
#ifdef CONFIG_USB_STORAGE
usb_stor_reset();
#endif
/* init low_level USB */
printf("USB%d: ", count);
count++;
+
+#ifdef CONFIG_SANDBOX
+ /*
+ * For Sandbox, we need scan the device tree each time when we
+ * start the USB stack, in order to re-create the emulated USB
+ * devices and bind drivers for them before we actually do the
+ * driver probe.
+ */
+ ret = dm_scan_fdt_dev(bus);
+ if (ret) {
+ printf("Sandbox USB device scan failed (%d)\n", ret);
+ continue;
+ }
+#endif
+
ret = device_probe(bus);
if (ret == -ENODEV) { /* No such device. */
puts("Port not available.\n");