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// 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,
};
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