target/linux/brcm63xx/patches-3.3/020-MIPS-BCM63XX-add-RNG-driver-platform_device-stub.patch

   1 From 79fed26f65c22e0d67c9523f7a374f0585bd2803 Mon Sep 17 00:00:00 2001
   2 From: Florian Fainelli <florian@openwrt.org>
   3 Date: Tue, 31 Jan 2012 15:12:24 +0100
   4 Subject: [PATCH 5/6] MIPS: BCM63XX: add RNG driver platform_device stub
   5
   6 Signed-off-by: Florian Fainelli <florian@openwrt.org>
   7 Cc: linux-mips@linux-mips.org
   8 Cc: mpm@selenic.com
   9 Cc: herbert@gondor.apana.org.au
  10 Patchwork: https://patchwork.linux-mips.org/patch/3325/
  11 Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
  12 ---
  13  arch/mips/bcm63xx/Makefile  |    4 ++--
  14  arch/mips/bcm63xx/dev-rng.c |   40 ++++++++++++++++++++++++++++++++++++++++
  15  2 files changed, 42 insertions(+), 2 deletions(-)
  16  create mode 100644 arch/mips/bcm63xx/dev-rng.c
  17
  18 --- a/arch/mips/bcm63xx/Makefile
  19 +++ b/arch/mips/bcm63xx/Makefile
  20 @@ -1,6 +1,6 @@
  21  obj-y          += clk.o cpu.o cs.o gpio.o irq.o prom.o setup.o timer.o \
  22 -                  dev-dsp.o dev-enet.o dev-pcmcia.o dev-spi.o dev-uart.o \
  23 -                  dev-wdt.o
  24 +                  dev-dsp.o dev-enet.o dev-pcmcia.o dev-rng.o dev-spi.o \
  25 +                  dev-uart.o dev-wdt.o
  26  obj-$(CONFIG_EARLY_PRINTK)     += early_printk.o
  27
  28  obj-y          += boards/
  29 --- /dev/null
  30 +++ b/arch/mips/bcm63xx/dev-rng.c
  31 @@ -0,0 +1,40 @@
  32 +/*
  33 + * This file is subject to the terms and conditions of the GNU General Public
  34 + * License.  See the file "COPYING" in the main directory of this archive
  35 + * for more details.
  36 + *
  37 + * Copyright (C) 2011 Florian Fainelli <florian@openwrt.org>
  38 + */
  39 +
  40 +#include <linux/init.h>
  41 +#include <linux/kernel.h>
  42 +#include <linux/platform_device.h>
  43 +#include <bcm63xx_cpu.h>
  44 +
  45 +static struct resource rng_resources[] = {
  46 +       {
  47 +               .start          = -1, /* filled at runtime */
  48 +               .end            = -1, /* filled at runtime */
  49 +               .flags          = IORESOURCE_MEM,
  50 +       },
  51 +};
  52 +
  53 +static struct platform_device bcm63xx_rng_device = {
  54 +       .name           = "bcm63xx-rng",
  55 +       .id             = -1,
  56 +       .num_resources  = ARRAY_SIZE(rng_resources),
  57 +       .resource       = rng_resources,
  58 +};
  59 +
  60 +int __init bcm63xx_rng_register(void)
  61 +{
  62 +       if (!BCMCPU_IS_6368())
  63 +               return -ENODEV;
  64 +
  65 +       rng_resources[0].start = bcm63xx_regset_address(RSET_RNG);
  66 +       rng_resources[0].end = rng_resources[0].start;
  67 +       rng_resources[0].end += RSET_RNG_SIZE - 1;
  68 +
  69 +       return platform_device_register(&bcm63xx_rng_device);
  70 +}
  71 +arch_initcall(bcm63xx_rng_register);