target/linux/brcm63xx/patches-3.3/104-MIPS-BCM63XX-add-RNG-driver-platform_device-stub.patch

   1 From cfcc8526e97bdcbfcbf945246b878262389b8842 Mon Sep 17 00:00:00 2001
   2 From: Florian Fainelli <florian@openwrt.org>
   3 Date: Wed, 25 Jan 2012 17:39:59 +0100
   4 Subject: [PATCH 17/63] MIPS: BCM63XX: add RNG driver platform_device stub
   5
   6 Signed-off-by: Florian Fainelli <florian@openwrt.org>
   7 ---
   8  arch/mips/bcm63xx/Makefile   |    4 ++--
   9  arch/mips/bcm63xx/dev-trng.c |   40 ++++++++++++++++++++++++++++++++++++++++
  10  2 files changed, 42 insertions(+), 2 deletions(-)
  11  create mode 100644 arch/mips/bcm63xx/dev-trng.c
  12
  13 --- a/arch/mips/bcm63xx/Makefile
  14 +++ b/arch/mips/bcm63xx/Makefile
  15 @@ -1,6 +1,6 @@
  16  obj-y          += clk.o cpu.o cs.o gpio.o irq.o prom.o setup.o timer.o \
  17 -                  dev-dsp.o dev-enet.o dev-pcmcia.o dev-spi.o dev-uart.o \
  18 -                  dev-wdt.o
  19 +                  dev-dsp.o dev-enet.o dev-pcmcia.o dev-spi.o dev-trng.o \
  20 +                  dev-uart.o dev-wdt.o
  21  obj-$(CONFIG_EARLY_PRINTK)     += early_printk.o
  22
  23  obj-y          += boards/
  24 --- /dev/null
  25 +++ b/arch/mips/bcm63xx/dev-trng.c
  26 @@ -0,0 +1,40 @@
  27 +/*
  28 + * This file is subject to the terms and conditions of the GNU General Public
  29 + * License.  See the file "COPYING" in the main directory of this archive
  30 + * for more details.
  31 + *
  32 + * Copyright (C) 2011 Florian Fainelli <florian@openwrt.org>
  33 + */
  34 +
  35 +#include <linux/init.h>
  36 +#include <linux/kernel.h>
  37 +#include <linux/platform_device.h>
  38 +#include <bcm63xx_cpu.h>
  39 +
  40 +static struct resource trng_resources[] = {
  41 +       {
  42 +               .start          = -1, /* filled at runtime */
  43 +               .end            = -1, /* filled at runtime */
  44 +               .flags          = IORESOURCE_MEM,
  45 +       },
  46 +};
  47 +
  48 +static struct platform_device bcm63xx_trng_device = {
  49 +       .name           = "bcm63xx-trng",
  50 +       .id             = -1,
  51 +       .num_resources  = ARRAY_SIZE(trng_resources),
  52 +       .resource       = trng_resources,
  53 +};
  54 +
  55 +int __init bcm63xx_trng_register(void)
  56 +{
  57 +       if (!BCMCPU_IS_6368())
  58 +               return -ENODEV;
  59 +
  60 +       trng_resources[0].start = bcm63xx_regset_address(RSET_TRNG);
  61 +       trng_resources[0].end = trng_resources[0].start;
  62 +       trng_resources[0].end += RSET_TRNG_SIZE - 1;
  63 +
  64 +       return platform_device_register(&bcm63xx_trng_device);
  65 +}
  66 +arch_initcall(bcm63xx_trng_register);