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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Generic DWC3 Glue layer
- *
- * Copyright (C) 2016 - 2018 Xilinx, Inc.
- *
- * Based on dwc3-omap.c.
- */
- #include <common.h>
- #include <dm.h>
- #include <dm/device-internal.h>
- #include <dm/lists.h>
- #include <linux/usb/otg.h>
- #include <linux/compat.h>
- #include <linux/usb/ch9.h>
- #include <linux/usb/gadget.h>
- #include <malloc.h>
- #include <usb.h>
- #include "core.h"
- #include "gadget.h"
- #include "linux-compat.h"
- DECLARE_GLOBAL_DATA_PTR;
- int usb_gadget_handle_interrupts(int index)
- {
- struct dwc3 *priv;
- struct udevice *dev;
- int ret;
- ret = uclass_first_device(UCLASS_USB_DEV_GENERIC, &dev);
- if (!dev || ret) {
- pr_err("No USB device found\n");
- return -ENODEV;
- }
- priv = dev_get_priv(dev);
- dwc3_gadget_uboot_handle_interrupt(priv);
- return 0;
- }
- static int dwc3_generic_peripheral_probe(struct udevice *dev)
- {
- struct dwc3 *priv = dev_get_priv(dev);
- return dwc3_init(priv);
- }
- static int dwc3_generic_peripheral_remove(struct udevice *dev)
- {
- struct dwc3 *priv = dev_get_priv(dev);
- dwc3_remove(priv);
- return 0;
- }
- static int dwc3_generic_peripheral_ofdata_to_platdata(struct udevice *dev)
- {
- struct dwc3 *priv = dev_get_priv(dev);
- int node = dev_of_offset(dev);
- priv->regs = (void *)devfdt_get_addr(dev);
- priv->regs += DWC3_GLOBALS_REGS_START;
- priv->maximum_speed = usb_get_maximum_speed(node);
- if (priv->maximum_speed == USB_SPEED_UNKNOWN) {
- pr_err("Invalid usb maximum speed\n");
- return -ENODEV;
- }
- priv->dr_mode = usb_get_dr_mode(node);
- if (priv->dr_mode == USB_DR_MODE_UNKNOWN) {
- pr_err("Invalid usb mode setup\n");
- return -ENODEV;
- }
- return 0;
- }
- static int dwc3_generic_peripheral_bind(struct udevice *dev)
- {
- return device_probe(dev);
- }
- U_BOOT_DRIVER(dwc3_generic_peripheral) = {
- .name = "dwc3-generic-peripheral",
- .id = UCLASS_USB_DEV_GENERIC,
- .ofdata_to_platdata = dwc3_generic_peripheral_ofdata_to_platdata,
- .probe = dwc3_generic_peripheral_probe,
- .remove = dwc3_generic_peripheral_remove,
- .bind = dwc3_generic_peripheral_bind,
- .platdata_auto_alloc_size = sizeof(struct usb_platdata),
- .priv_auto_alloc_size = sizeof(struct dwc3),
- .flags = DM_FLAG_ALLOC_PRIV_DMA,
- };
- static int dwc3_generic_bind(struct udevice *parent)
- {
- const void *fdt = gd->fdt_blob;
- int node;
- int ret;
- for (node = fdt_first_subnode(fdt, dev_of_offset(parent)); node > 0;
- node = fdt_next_subnode(fdt, node)) {
- const char *name = fdt_get_name(fdt, node, NULL);
- enum usb_dr_mode dr_mode;
- struct udevice *dev;
- const char *driver;
- debug("%s: subnode name: %s\n", __func__, name);
- if (strncmp(name, "dwc3@", 4))
- continue;
- dr_mode = usb_get_dr_mode(node);
- switch (dr_mode) {
- case USB_DR_MODE_PERIPHERAL:
- case USB_DR_MODE_OTG:
- debug("%s: dr_mode: OTG or Peripheral\n", __func__);
- driver = "dwc3-generic-peripheral";
- break;
- case USB_DR_MODE_HOST:
- debug("%s: dr_mode: HOST\n", __func__);
- driver = "dwc3-generic-host";
- break;
- default:
- debug("%s: unsupported dr_mode\n", __func__);
- return -ENODEV;
- };
- ret = device_bind_driver_to_node(parent, driver, name,
- offset_to_ofnode(node), &dev);
- if (ret) {
- debug("%s: not able to bind usb device mode\n",
- __func__);
- return ret;
- }
- }
- return 0;
- }
- static const struct udevice_id dwc3_generic_ids[] = {
- { .compatible = "xlnx,zynqmp-dwc3" },
- { }
- };
- U_BOOT_DRIVER(dwc3_generic_wrapper) = {
- .name = "dwc3-generic-wrapper",
- .id = UCLASS_MISC,
- .of_match = dwc3_generic_ids,
- .bind = dwc3_generic_bind,
- };
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