1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0+ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (c) 2019, Linaro Limited 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun #include <common.h> 7*4882a593Smuzhiyun #include <dm.h> 8*4882a593Smuzhiyun #include <rng.h> 9*4882a593Smuzhiyun dm_rng_read(struct udevice * dev,void * buffer,size_t size)10*4882a593Smuzhiyunint dm_rng_read(struct udevice *dev, void *buffer, size_t size) 11*4882a593Smuzhiyun { 12*4882a593Smuzhiyun const struct dm_rng_ops *ops = device_get_ops(dev); 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun if (!ops->read) 15*4882a593Smuzhiyun return -ENOSYS; 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun return ops->read(dev, buffer, size); 18*4882a593Smuzhiyun } 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun UCLASS_DRIVER(rng) = { 21*4882a593Smuzhiyun .name = "rng", 22*4882a593Smuzhiyun .id = UCLASS_RNG, 23*4882a593Smuzhiyun }; 24