1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0+ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com 4*4882a593Smuzhiyun * Written by Jean-Jacques Hiblot <jjhiblot@ti.com> 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #include <common.h> 8*4882a593Smuzhiyun #include <dm.h> 9*4882a593Smuzhiyun #include <dm/device-internal.h> 10*4882a593Smuzhiyun #include <linux/usb/gadget.h> 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #if CONFIG_IS_ENABLED(DM_USB_GADGET) 13*4882a593Smuzhiyun #define MAX_UDC_DEVICES 4 14*4882a593Smuzhiyun static struct udevice *dev_array[MAX_UDC_DEVICES]; usb_gadget_initialize(int index)15*4882a593Smuzhiyunint usb_gadget_initialize(int index) 16*4882a593Smuzhiyun { 17*4882a593Smuzhiyun int ret; 18*4882a593Smuzhiyun struct udevice *dev = NULL; 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun if (index < 0 || index >= ARRAY_SIZE(dev_array)) 21*4882a593Smuzhiyun return -EINVAL; 22*4882a593Smuzhiyun if (dev_array[index]) 23*4882a593Smuzhiyun return 0; 24*4882a593Smuzhiyun ret = uclass_get_device_by_seq(UCLASS_USB_GADGET_GENERIC, index, &dev); 25*4882a593Smuzhiyun if (!dev || ret) { 26*4882a593Smuzhiyun ret = uclass_get_device(UCLASS_USB_GADGET_GENERIC, index, &dev); 27*4882a593Smuzhiyun if (!dev || ret) { 28*4882a593Smuzhiyun pr_err("No USB device found\n"); 29*4882a593Smuzhiyun return -ENODEV; 30*4882a593Smuzhiyun } 31*4882a593Smuzhiyun } 32*4882a593Smuzhiyun dev_array[index] = dev; 33*4882a593Smuzhiyun return 0; 34*4882a593Smuzhiyun } 35*4882a593Smuzhiyun usb_gadget_release(int index)36*4882a593Smuzhiyunint usb_gadget_release(int index) 37*4882a593Smuzhiyun { 38*4882a593Smuzhiyun #if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE) 39*4882a593Smuzhiyun int ret; 40*4882a593Smuzhiyun if (index < 0 || index >= ARRAY_SIZE(dev_array)) 41*4882a593Smuzhiyun return -EINVAL; 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun ret = device_remove(dev_array[index], DM_REMOVE_NORMAL); 44*4882a593Smuzhiyun if (!ret) 45*4882a593Smuzhiyun dev_array[index] = NULL; 46*4882a593Smuzhiyun return ret; 47*4882a593Smuzhiyun #else 48*4882a593Smuzhiyun return -ENOTSUPP; 49*4882a593Smuzhiyun #endif 50*4882a593Smuzhiyun } 51*4882a593Smuzhiyun usb_gadget_handle_interrupts(int index)52*4882a593Smuzhiyunint usb_gadget_handle_interrupts(int index) 53*4882a593Smuzhiyun { 54*4882a593Smuzhiyun if (index < 0 || index >= ARRAY_SIZE(dev_array)) 55*4882a593Smuzhiyun return -EINVAL; 56*4882a593Smuzhiyun return dm_usb_gadget_handle_interrupts(dev_array[index]); 57*4882a593Smuzhiyun } 58*4882a593Smuzhiyun #endif 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun UCLASS_DRIVER(usb_gadget_generic) = { 61*4882a593Smuzhiyun .id = UCLASS_USB_GADGET_GENERIC, 62*4882a593Smuzhiyun .name = "usb", 63*4882a593Smuzhiyun .flags = DM_UC_FLAG_SEQ_ALIAS, 64*4882a593Smuzhiyun }; 65