linux/arch/arm/include/asm/hardware/arm_timer.h
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   1#ifndef __ASM_ARM_HARDWARE_ARM_TIMER_H
   2#define __ASM_ARM_HARDWARE_ARM_TIMER_H
   3
   4/*
   5 * ARM timer implementation, found in Integrator, Versatile and Realview
   6 * platforms.  Not all platforms support all registers and bits in these
   7 * registers, so we mark them with A for Integrator AP, C for Integrator
   8 * CP, V for Versatile and R for Realview.
   9 *
  10 * Integrator AP has 16-bit timers, Integrator CP, Versatile and Realview
  11 * can have 16-bit or 32-bit selectable via a bit in the control register.
  12 *
  13 * Every SP804 contains two identical timers.
  14 */
  15#define TIMER_1_BASE    0x00
  16#define TIMER_2_BASE    0x20
  17
  18#define TIMER_LOAD      0x00                    /* ACVR rw */
  19#define TIMER_VALUE     0x04                    /* ACVR ro */
  20#define TIMER_CTRL      0x08                    /* ACVR rw */
  21#define TIMER_CTRL_ONESHOT      (1 << 0)        /*  CVR */
  22#define TIMER_CTRL_32BIT        (1 << 1)        /*  CVR */
  23#define TIMER_CTRL_DIV1         (0 << 2)        /* ACVR */
  24#define TIMER_CTRL_DIV16        (1 << 2)        /* ACVR */
  25#define TIMER_CTRL_DIV256       (2 << 2)        /* ACVR */
  26#define TIMER_CTRL_IE           (1 << 5)        /*   VR */
  27#define TIMER_CTRL_PERIODIC     (1 << 6)        /* ACVR */
  28#define TIMER_CTRL_ENABLE       (1 << 7)        /* ACVR */
  29
  30#define TIMER_INTCLR    0x0c                    /* ACVR wo */
  31#define TIMER_RIS       0x10                    /*  CVR ro */
  32#define TIMER_MIS       0x14                    /*  CVR ro */
  33#define TIMER_BGLOAD    0x18                    /*  CVR rw */
  34
  35#endif
  36