target/linux/bcm53xx/patches-3.14/131-ARM-BCM5301X-add-restart-support.patch

   1 From 28b11a8b1258214b3b5d58bb6e3bbcb0fc9fd4fe Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
   3 Date: Thu, 31 Jul 2014 07:28:05 +0200
   4 Subject: [PATCH] ARM: BCM5301X: add restart support
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
  10 ---
  11  arch/arm/mach-bcm/bcm_5301x.c | 31 +++++++++++++++++++++++++++++++
  12  1 file changed, 31 insertions(+)
  13
  14 --- a/arch/arm/mach-bcm/bcm_5301x.c
  15 +++ b/arch/arm/mach-bcm/bcm_5301x.c
  16 @@ -12,9 +12,26 @@
  17  #include <asm/siginfo.h>
  18  #include <asm/signal.h>
  19
  20 +#include <linux/bcma/bcma.h>
  21
  22  static bool first_fault = true;
  23
  24 +static struct bcma_bus *bcm5301x_get_bcma_bus(void)
  25 +{
  26 +       struct device_node *np;
  27 +       struct platform_device *pdev;
  28 +
  29 +       np = of_find_compatible_node(NULL, NULL, "brcm,bus-aix");
  30 +       if (!np)
  31 +               return NULL;
  32 +
  33 +       pdev = of_find_device_by_node(np);
  34 +       if (!pdev)
  35 +               return NULL;
  36 +
  37 +       return platform_get_drvdata(pdev);
  38 +}
  39 +
  40  static int bcm5301x_abort_handler(unsigned long addr, unsigned int fsr,
  41                                  struct pt_regs *regs)
  42  {
  43 @@ -49,6 +66,19 @@ static void __init bcm5301x_dt_init(void
  44         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  45  }
  46
  47 +static void bcm5301x_restart(enum reboot_mode mode, const char *cmd)
  48 +{
  49 +       struct bcma_bus *bus = bcm5301x_get_bcma_bus();
  50 +
  51 +       if (bus)
  52 +               bcma_chipco_watchdog_timer_set(&bus->drv_cc, 1);
  53 +       else
  54 +               pr_warn("Unable to access bcma bus\n");
  55 +
  56 +       while (1)
  57 +               ;
  58 +}
  59 +
  60  static const char __initconst *bcm5301x_dt_compat[] = {
  61         "brcm,bcm4708",
  62         NULL,
  63 @@ -57,5 +87,6 @@ static const char __initconst *bcm5301x_
  64  DT_MACHINE_START(BCM5301X, "BCM5301X")
  65         .init_early     = bcm5301x_init_early,
  66         .init_machine   = bcm5301x_dt_init,
  67 +       .restart        = bcm5301x_restart,
  68         .dt_compat      = bcm5301x_dt_compat,
  69  MACHINE_END