arch/arm/mach-highbank/localtimer.c

   1 /*
   2  * Copyright 2010-2011 Calxeda, Inc.
   3  * Based on localtimer.c, Copyright (C) 2002 ARM Ltd.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 #include <linux/init.h>
  18 #include <linux/clockchips.h>
  19 #include <linux/of.h>
  20 #include <linux/of_address.h>
  21 #include <linux/of_irq.h>
  22
  23 #include <asm/smp_twd.h>
  24
  25 /*
  26  * Setup the local clock events for a CPU.
  27  */
  28 int __cpuinit local_timer_setup(struct clock_event_device *evt)
  29 {
  30         struct device_node *np;
  31
  32         np = of_find_compatible_node(NULL, NULL, "arm,smp-twd");
  33         if (!twd_base) {
  34                 twd_base = of_iomap(np, 0);
  35                 WARN_ON(!twd_base);
  36         }
  37         evt->irq = irq_of_parse_and_map(np, 0);
  38         twd_timer_setup(evt);
  39         return 0;
  40 }