65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com
|
|
* Written by Jean-Jacques Hiblot <jjhiblot@ti.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <dm/device-internal.h>
|
|
#include <linux/usb/gadget.h>
|
|
|
|
#if CONFIG_IS_ENABLED(DM_USB_GADGET)
|
|
#define MAX_UDC_DEVICES 4
|
|
static struct udevice *dev_array[MAX_UDC_DEVICES];
|
|
int usb_gadget_initialize(int index)
|
|
{
|
|
int ret;
|
|
struct udevice *dev = NULL;
|
|
|
|
if (index < 0 || index >= ARRAY_SIZE(dev_array))
|
|
return -EINVAL;
|
|
if (dev_array[index])
|
|
return 0;
|
|
ret = uclass_get_device_by_seq(UCLASS_USB_GADGET_GENERIC, index, &dev);
|
|
if (!dev || ret) {
|
|
ret = uclass_get_device(UCLASS_USB_GADGET_GENERIC, index, &dev);
|
|
if (!dev || ret) {
|
|
pr_err("No USB device found\n");
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
dev_array[index] = dev;
|
|
return 0;
|
|
}
|
|
|
|
int usb_gadget_release(int index)
|
|
{
|
|
#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
|
|
int ret;
|
|
if (index < 0 || index >= ARRAY_SIZE(dev_array))
|
|
return -EINVAL;
|
|
|
|
ret = device_remove(dev_array[index], DM_REMOVE_NORMAL);
|
|
if (!ret)
|
|
dev_array[index] = NULL;
|
|
return ret;
|
|
#else
|
|
return -ENOTSUPP;
|
|
#endif
|
|
}
|
|
|
|
int usb_gadget_handle_interrupts(int index)
|
|
{
|
|
if (index < 0 || index >= ARRAY_SIZE(dev_array))
|
|
return -EINVAL;
|
|
return dm_usb_gadget_handle_interrupts(dev_array[index]);
|
|
}
|
|
#endif
|
|
|
|
UCLASS_DRIVER(usb_gadget_generic) = {
|
|
.id = UCLASS_USB_GADGET_GENERIC,
|
|
.name = "usb",
|
|
.flags = DM_UC_FLAG_SEQ_ALIAS,
|
|
};
|