target/linux/ramips/patches-4.14/0005-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 @@ -1,12 +1,17 @@
  15  # SPDX-License-Identifier: GPL-2.0
  16  if RALINK
  17
  18 +config CEVT_SYSTICK_QUIRK
  19 +       bool
  20 +       default n
  21 +
  22  config CLKEVT_RT3352
  23         bool
  24         depends on SOC_RT305X || SOC_MT7620
  25         default y
  26         select TIMER_OF
  27         select CLKSRC_MMIO
  28 +       select CEVT_SYSTICK_QUIRK
  29
  30  config RALINK_ILL_ACC
  31         bool
  32 --- a/arch/mips/kernel/cevt-r4k.c
  33 +++ b/arch/mips/kernel/cevt-r4k.c
  34 @@ -15,6 +15,26 @@
  35  #include <asm/time.h>
  36  #include <asm/cevt-r4k.h>
  37
  38 +static int mips_state_oneshot(struct clock_event_device *evt)
  39 +{
  40 +       if (!cp0_timer_irq_installed) {
  41 +               cp0_timer_irq_installed = 1;
  42 +               setup_irq(evt->irq, &c0_compare_irqaction);
  43 +       }
  44 +
  45 +       return 0;
  46 +}
  47 +
  48 +static int mips_state_shutdown(struct clock_event_device *evt)
  49 +{
  50 +       if (cp0_timer_irq_installed) {
  51 +               cp0_timer_irq_installed = 0;
  52 +               remove_irq(evt->irq, &c0_compare_irqaction);
  53 +       }
  54 +
  55 +       return 0;
  56 +}
  57 +
  58  static int mips_next_event(unsigned long delta,
  59                            struct clock_event_device *evt)
  60  {
  61 @@ -281,17 +301,21 @@ int r4k_clockevent_init(void)
  62         cd->rating              = 300;
  63         cd->irq                 = irq;
  64         cd->cpumask             = cpumask_of(cpu);
  65 +       cd->set_state_shutdown  = mips_state_shutdown;
  66 +       cd->set_state_oneshot   = mips_state_oneshot;
  67         cd->set_next_event      = mips_next_event;
  68         cd->event_handler       = mips_event_handler;
  69
  70         clockevents_config_and_register(cd, mips_hpt_frequency, min_delta, 0x7fffffff);
  71
  72 +#ifndef CONFIG_CEVT_SYSTICK_QUIRK
  73         if (cp0_timer_irq_installed)
  74                 return 0;
  75
  76         cp0_timer_irq_installed = 1;
  77
  78         setup_irq(irq, &c0_compare_irqaction);
  79 +#endif
  80
  81         return 0;
  82  }