mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 15:37:23 +00:00
49d674547c
By enabling BLK by default this is the next driver which needs to get support for DM_USB. Adding generic DWC3 glue logic which only parse nodes and read device mode. Based on it probe proper host/peripheral DWC3 drivers for it. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
157 lines
3.4 KiB
C
157 lines
3.4 KiB
C
// 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,
|
|
};
|