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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2019, Linaro Limited
*/
#if !defined _RNG_H_
#define _RNG_H_
struct udevice;
/**
* dm_rng_read() - read a random number seed from the rng device
* @buffer: input buffer to put the read random seed into
* @size: number of bytes of random seed read
*
* Return: 0 if OK, -ve on error
*/
int dm_rng_read(struct udevice *dev, void *buffer, size_t size);
/* struct dm_rng_ops - Operations for the hwrng uclass */
struct dm_rng_ops {
/**
* @read() - read a random number seed
*
* @data: input buffer to read the random seed
* @max: total number of bytes to read
*
* Return: 0 if OK, -ve on error
*/
int (*read)(struct udevice *dev, void *data, size_t max);
};
#endif /* _RNG_H_ */
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