1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2006-2007 PA Semi, Inc
7  * Driver for the PWRficient onchip rng
33 static int pasemi_rng_data_present(struct hwrng *rng, int wait)  in pasemi_rng_data_present()  argument
35 	void __iomem *rng_regs = (void __iomem *)rng->priv;  in pasemi_rng_data_present()
48 static int pasemi_rng_data_read(struct hwrng *rng, u32 *data)  in pasemi_rng_data_read()  argument
50 	void __iomem *rng_regs = (void __iomem *)rng->priv;  in pasemi_rng_data_read()
55 static int pasemi_rng_init(struct hwrng *rng)  in pasemi_rng_init()  argument
57 	void __iomem *rng_regs = (void __iomem *)rng->priv;  in pasemi_rng_init()
67 static void pasemi_rng_cleanup(struct hwrng *rng)  in pasemi_rng_cleanup()  argument
69 	void __iomem *rng_regs = (void __iomem *)rng->priv;  in pasemi_rng_cleanup()
95 	pr_info("Registering PA Semi RNG\n");  in rng_probe()
96 	return devm_hwrng_register(&pdev->dev, &pasemi_rng);  in rng_probe()
100 	{ .compatible      = "1682m-rng", },
101 	{ .compatible      = "pasemi,pwrficient-rng", },
108 		.name = "pasemi-rng",
118 MODULE_DESCRIPTION("H/W RNG driver for PA Semi processor");