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