target/linux/ramips/patches-3.8/0003-MIPS-ralink-adds-reset-code.patch

   1 From 3cdf3d713c81ffd3032d7c664f0be89d1ddce3e3 Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Sun, 20 Jan 2013 22:00:57 +0100
   4 Subject: [PATCH 03/79] MIPS: ralink: adds reset code
   5
   6 Resetting these SoCs requires no real magic. The code is straight forward.
   7
   8 Signed-off-by: John Crispin <blogic@openwrt.org>
   9 Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  10 Patchwork: http://patchwork.linux-mips.org/patch/4891/
  11 ---
  12  arch/mips/ralink/reset.c |   44 ++++++++++++++++++++++++++++++++++++++++++++
  13  1 file changed, 44 insertions(+)
  14  create mode 100644 arch/mips/ralink/reset.c
  15
  16 diff --git a/arch/mips/ralink/reset.c b/arch/mips/ralink/reset.c
  17 new file mode 100644
  18 index 0000000..22120e5
  19 --- /dev/null
  20 +++ b/arch/mips/ralink/reset.c
  21 @@ -0,0 +1,44 @@
  22 +/*
  23 + * This program is free software; you can redistribute it and/or modify it
  24 + * under the terms of the GNU General Public License version 2 as published
  25 + * by the Free Software Foundation.
  26 + *
  27 + * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
  28 + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
  29 + * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
  30 + */
  31 +
  32 +#include <linux/pm.h>
  33 +#include <linux/io.h>
  34 +
  35 +#include <asm/reboot.h>
  36 +
  37 +#include <asm/mach-ralink/ralink_regs.h>
  38 +
  39 +/* Reset Control */
  40 +#define SYSC_REG_RESET_CTRL     0x034
  41 +#define RSTCTL_RESET_SYSTEM     BIT(0)
  42 +
  43 +static void ralink_restart(char *command)
  44 +{
  45 +       local_irq_disable();
  46 +       rt_sysc_w32(RSTCTL_RESET_SYSTEM, SYSC_REG_RESET_CTRL);
  47 +       unreachable();
  48 +}
  49 +
  50 +static void ralink_halt(void)
  51 +{
  52 +       local_irq_disable();
  53 +       unreachable();
  54 +}
  55 +
  56 +static int __init mips_reboot_setup(void)
  57 +{
  58 +       _machine_restart = ralink_restart;
  59 +       _machine_halt = ralink_halt;
  60 +       pm_power_off = ralink_halt;
  61 +
  62 +       return 0;
  63 +}
  64 +
  65 +arch_initcall(mips_reboot_setup);
  66 --
  67 1.7.10.4
  68