target/linux/ramips/patches-4.4/0005-MIPS-use-set_mode-to-enable-disable-the-cevt-r4k-irq.patch

   1 From ce3d4a4111a5f7e6b4e74bceae5faa6ce388e8ec Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Sun, 14 Jul 2013 23:08:11 +0200
   4 Subject: [PATCH 05/53] MIPS: use set_mode() to enable/disable the cevt-r4k
   5  irq
   6
   7 Signed-off-by: John Crispin <blogic@openwrt.org>
   8 ---
   9  arch/mips/ralink/Kconfig |    5 +++++
  10  1 file changed, 5 insertions(+)
  11
  12 --- a/arch/mips/ralink/Kconfig
  13 +++ b/arch/mips/ralink/Kconfig
  14 @@ -1,11 +1,16 @@
  15  if RALINK
  16
  17 +config CEVT_SYSTICK_QUIRK
  18 +       bool
  19 +       default n
  20 +
  21  config CLKEVT_RT3352
  22         bool
  23         depends on SOC_RT305X || SOC_MT7620
  24         default y
  25         select CLKSRC_OF
  26         select CLKSRC_MMIO
  27 +       select CEVT_SYSTICK_QUIRK
  28
  29  config RALINK_ILL_ACC
  30         bool
  31 --- a/arch/mips/kernel/cevt-r4k.c
  32 +++ b/arch/mips/kernel/cevt-r4k.c
  33 @@ -15,6 +15,26 @@
  34  #include <asm/time.h>
  35  #include <asm/cevt-r4k.h>
  36
  37 +static int mips_state_oneshot(struct clock_event_device *evt)
  38 +{
  39 +       if (!cp0_timer_irq_installed) {
  40 +               cp0_timer_irq_installed = 1;
  41 +               setup_irq(evt->irq, &c0_compare_irqaction);
  42 +       }
  43 +
  44 +       return 0;
  45 +}
  46 +
  47 +static int mips_state_shutdown(struct clock_event_device *evt)
  48 +{
  49 +       if (cp0_timer_irq_installed) {
  50 +               cp0_timer_irq_installed = 0;
  51 +               remove_irq(evt->irq, &c0_compare_irqaction);
  52 +       }
  53 +
  54 +       return 0;
  55 +}
  56 +
  57  static int mips_next_event(unsigned long delta,
  58                            struct clock_event_device *evt)
  59  {
  60 @@ -208,18 +228,21 @@ int r4k_clockevent_init(void)
  61         cd->rating              = 300;
  62         cd->irq                 = irq;
  63         cd->cpumask             = cpumask_of(cpu);
  64 +       cd->set_state_shutdown  = mips_state_shutdown;
  65 +       cd->set_state_oneshot   = mips_state_oneshot;
  66         cd->set_next_event      = mips_next_event;
  67         cd->event_handler       = mips_event_handler;
  68
  69         clockevents_register_device(cd);
  70
  71 +#ifndef CONFIG_CEVT_SYSTICK_QUIRK
  72         if (cp0_timer_irq_installed)
  73                 return 0;
  74
  75         cp0_timer_irq_installed = 1;
  76
  77         setup_irq(irq, &c0_compare_irqaction);
  78 -
  79 +#endif
  80         return 0;
  81  }
  82