arch/arm/plat-nomadik/include/plat/mtu.h

   1 #ifndef __PLAT_MTU_H
   2 #define __PLAT_MTU_H
   3
   4 /*
   5  * Guaranteed runtime conversion range in seconds for
   6  * the clocksource and clockevent.
   7  */
   8 #define MTU_MIN_RANGE 4
   9
  10 /* should be set by the platform code */
  11 extern void __iomem *mtu_base;
  12
  13 /*
  14  * The MTU device hosts four different counters, with 4 set of
  15  * registers. These are register names.
  16  */
  17
  18 #define MTU_IMSC        0x00    /* Interrupt mask set/clear */
  19 #define MTU_RIS         0x04    /* Raw interrupt status */
  20 #define MTU_MIS         0x08    /* Masked interrupt status */
  21 #define MTU_ICR         0x0C    /* Interrupt clear register */
  22
  23 /* per-timer registers take 0..3 as argument */
  24 #define MTU_LR(x)       (0x10 + 0x10 * (x) + 0x00)      /* Load value */
  25 #define MTU_VAL(x)      (0x10 + 0x10 * (x) + 0x04)      /* Current value */
  26 #define MTU_CR(x)       (0x10 + 0x10 * (x) + 0x08)      /* Control reg */
  27 #define MTU_BGLR(x)     (0x10 + 0x10 * (x) + 0x0c)      /* At next overflow */
  28
  29 /* bits for the control register */
  30 #define MTU_CRn_ENA             0x80
  31 #define MTU_CRn_PERIODIC        0x40    /* if 0 = free-running */
  32 #define MTU_CRn_PRESCALE_MASK   0x0c
  33 #define MTU_CRn_PRESCALE_1              0x00
  34 #define MTU_CRn_PRESCALE_16             0x04
  35 #define MTU_CRn_PRESCALE_256            0x08
  36 #define MTU_CRn_32BITS          0x02
  37 #define MTU_CRn_ONESHOT         0x01    /* if 0 = wraps reloading from BGLR*/
  38
  39 /* Other registers are usual amba/primecell registers, currently not used */
  40 #define MTU_ITCR        0xff0
  41 #define MTU_ITOP        0xff4
  42
  43 #define MTU_PERIPH_ID0  0xfe0
  44 #define MTU_PERIPH_ID1  0xfe4
  45 #define MTU_PERIPH_ID2  0xfe8
  46 #define MTU_PERIPH_ID3  0xfeC
  47
  48 #define MTU_PCELL0      0xff0
  49 #define MTU_PCELL1      0xff4
  50 #define MTU_PCELL2      0xff8
  51 #define MTU_PCELL3      0xffC
  52
  53 #endif /* __PLAT_MTU_H */
  54