target/linux/ramips/patches-3.14/0017-MIPS-use-set_mode-to-enable-disable-the-cevt-r4k-irq.patch

   1 From f8da5caf65926d44581d4e7914b28ceab3d28a7c 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 17/57] 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/kernel/cevt-r4k.c |   37 +++++++++++++++++++++++++++++++------
  10  1 file changed, 31 insertions(+), 6 deletions(-)
  11
  12 --- a/arch/mips/kernel/cevt-r4k.c
  13 +++ b/arch/mips/kernel/cevt-r4k.c
  14 @@ -38,12 +38,6 @@ static int mips_next_event(unsigned long
  15
  16  #endif /* CONFIG_MIPS_MT_SMTC */
  17
  18 -void mips_set_clock_mode(enum clock_event_mode mode,
  19 -                               struct clock_event_device *evt)
  20 -{
  21 -       /* Nothing to do ...  */
  22 -}
  23 -
  24  DEFINE_PER_CPU(struct clock_event_device, mips_clockevent_device);
  25  int cp0_timer_irq_installed;
  26
  27 @@ -90,9 +84,38 @@ struct irqaction c0_compare_irqaction =
  28         .name = "timer",
  29  };
  30
  31 +void mips_set_clock_mode(enum clock_event_mode mode,
  32 +                               struct clock_event_device *evt)
  33 +{
  34 +#ifdef CONFIG_CEVT_SYSTICK_QUIRK
  35 +       switch (mode) {
  36 +       case CLOCK_EVT_MODE_ONESHOT:
  37 +               if (cp0_timer_irq_installed)
  38 +                       break;
  39 +
  40 +               cp0_timer_irq_installed = 1;
  41 +
  42 +               setup_irq(evt->irq, &c0_compare_irqaction);
  43 +               break;
  44 +
  45 +       case CLOCK_EVT_MODE_SHUTDOWN:
  46 +               if (!cp0_timer_irq_installed)
  47 +                       break;
  48 +
  49 +               cp0_timer_irq_installed = 0;
  50 +               free_irq(evt->irq, &c0_compare_irqaction);
  51 +               break;
  52 +
  53 +       default:
  54 +               pr_err("Unhandeled mips clock_mode\n");
  55 +               break;
  56 +       }
  57 +#endif
  58 +}
  59
  60  void mips_event_handler(struct clock_event_device *dev)
  61  {
  62 +
  63  }
  64
  65  /*
  66 @@ -215,12 +238,14 @@ int r4k_clockevent_init(void)
  67  #endif
  68         clockevents_register_device(cd);
  69
  70 +#ifndef CONFIG_CEVT_SYSTICK_QUIRK
  71         if (cp0_timer_irq_installed)
  72                 return 0;
  73
  74         cp0_timer_irq_installed = 1;
  75
  76         setup_irq(irq, &c0_compare_irqaction);
  77 +#endif
  78
  79         return 0;
  80  }