release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-lpc32xx/clock.h

   1 /*
   2  * arch/arm/mach-lpc32xx/clock.h
   3  *
   4  * Author: Kevin Wells <kevin.wells@nxp.com>
   5  *
   6  * Copyright (C) 2010 NXP Semiconductors
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #ifndef __LPC32XX_CLOCK_H
  20 #define __LPC32XX_CLOCK_H
  21
  22 struct clk {
  23         struct list_head node;
  24         struct clk *parent;
  25         u32 rate;
  26         u32 usecount;
  27
  28         int (*set_rate) (struct clk *, unsigned long);
  29         unsigned long (*round_rate) (struct clk *, unsigned long);
  30         unsigned long (*get_rate) (struct clk *clk);
  31         int (*enable) (struct clk *, int);
  32
  33         /* Register address and bit mask for simple clocks */
  34         void __iomem *enable_reg;
  35         u32 enable_mask;
  36 };
  37
  38 #endif