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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 
 14 static struct resource rng_resources[] = {
 15         {
 16                 .start          = -1, /* filled at runtime */
 17                 .end            = -1, /* filled at runtime */
 18                 .flags          = IORESOURCE_MEM,
 19         },
 20 };
 21 
 22 static 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 
 29 int __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 }
 40 arch_initcall(bcm63xx_rng_register);
 41 

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