drivers/clocksource/timer-sp.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * ARM timer implementation, found in Integrator, Versatile and Realview
   4  * platforms.  Not all platforms support all registers and bits in these
   5  * registers, so we mark them with A for Integrator AP, C for Integrator
   6  * CP, V for Versatile and R for Realview.
   7  *
   8  * Integrator AP has 16-bit timers, Integrator CP, Versatile and Realview
   9  * can have 16-bit or 32-bit selectable via a bit in the control register.
  10  *
  11  * Every SP804 contains two identical timers.
  12  */
  13 #define TIMER_1_BASE    0x00
  14 #define TIMER_2_BASE    0x20
  15
  16 #define TIMER_LOAD      0x00                    /* ACVR rw */
  17 #define TIMER_VALUE     0x04                    /* ACVR ro */
  18 #define TIMER_CTRL      0x08                    /* ACVR rw */
  19 #define TIMER_CTRL_ONESHOT      (1 << 0)        /*  CVR */
  20 #define TIMER_CTRL_32BIT        (1 << 1)        /*  CVR */
  21 #define TIMER_CTRL_DIV1         (0 << 2)        /* ACVR */
  22 #define TIMER_CTRL_DIV16        (1 << 2)        /* ACVR */
  23 #define TIMER_CTRL_DIV256       (2 << 2)        /* ACVR */
  24 #define TIMER_CTRL_IE           (1 << 5)        /*   VR */
  25 #define TIMER_CTRL_PERIODIC     (1 << 6)        /* ACVR */
  26 #define TIMER_CTRL_ENABLE       (1 << 7)        /* ACVR */
  27
  28 #define TIMER_INTCLR    0x0c                    /* ACVR wo */
  29 #define TIMER_RIS       0x10                    /*  CVR ro */
  30 #define TIMER_MIS       0x14                    /*  CVR ro */
  31 #define TIMER_BGLOAD    0x18                    /*  CVR rw */