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       1                 :            : /*
       2                 :            :  *  linux/arch/arm/plat-versatile/sched-clock.c
       3                 :            :  *
       4                 :            :  *  Copyright (C) 1999 - 2003 ARM Limited
       5                 :            :  *  Copyright (C) 2000 Deep Blue Solutions Ltd
       6                 :            :  *
       7                 :            :  * This program is free software; you can redistribute it and/or modify
       8                 :            :  * it under the terms of the GNU General Public License as published by
       9                 :            :  * the Free Software Foundation; either version 2 of the License, or
      10                 :            :  * (at your option) any later version.
      11                 :            :  *
      12                 :            :  * This program is distributed in the hope that it will be useful,
      13                 :            :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14                 :            :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      15                 :            :  * GNU General Public License for more details.
      16                 :            :  *
      17                 :            :  * You should have received a copy of the GNU General Public License
      18                 :            :  * along with this program; if not, write to the Free Software
      19                 :            :  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
      20                 :            :  */
      21                 :            : #include <linux/kernel.h>
      22                 :            : #include <linux/io.h>
      23                 :            : #include <linux/sched_clock.h>
      24                 :            : 
      25                 :            : #include <plat/sched_clock.h>
      26                 :            : 
      27                 :            : static void __iomem *ctr;
      28                 :            : 
      29                 :          0 : static u32 notrace versatile_read_sched_clock(void)
      30                 :            : {
      31         [ #  # ]:          0 :         if (ctr)
      32                 :          0 :                 return readl(ctr);
      33                 :            : 
      34                 :            :         return 0;
      35                 :            : }
      36                 :            : 
      37                 :          0 : void __init versatile_sched_clock_init(void __iomem *reg, unsigned long rate)
      38                 :            : {
      39                 :          0 :         ctr = reg;
      40                 :          0 :         setup_sched_clock(versatile_read_sched_clock, 32, rate);
      41                 :          0 : }