LXR linux/arch/mips/bcm63xx/dev-rng.c

   1/*
   2 * This file is subject to the terms and conditions of the GNU General Public
   3 * License.  See the file "COPYING" in the main directory of this archive
   4 * for more details.
   5 *
   6 * Copyright (C) 2011 Florian Fainelli <florian@openwrt.org>
   7 */
   8
   9#include <linux/init.h>
  10#include <linux/kernel.h>
  11#include <linux/platform_device.h>
  12#include <bcm63xx_cpu.h>
  13
  14static struct resource rng_resources[] = {
  15        {
  16                .start          = -1, /* filled at runtime */
  17                .end            = -1, /* filled at runtime */
  18                .flags          = IORESOURCE_MEM,
  19        },
  20};
  21
  22static struct platform_device bcm63xx_rng_device = {
  23        .name           = "bcm63xx-rng",
  24        .id             = -1,
  25        .num_resources  = ARRAY_SIZE(rng_resources),
  26        .resource       = rng_resources,
  27};
  28
  29int __init bcm63xx_rng_register(void)
  30{
  31        if (!BCMCPU_IS_6368())
  32                return -ENODEV;
  33
  34        rng_resources[0].start = bcm63xx_regset_address(RSET_RNG);
  35        rng_resources[0].end = rng_resources[0].start;
  36        rng_resources[0].end += RSET_RNG_SIZE - 1;
  37
  38        return platform_device_register(&bcm63xx_rng_device);
  39}
  40arch_initcall(bcm63xx_rng_register);
  41