arch/m68k/include/asm/timex.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * linux/include/asm-m68k/timex.h
   4  *
   5  * m68k architecture timex specifications
   6  */
   7 #ifndef _ASMm68K_TIMEX_H
   8 #define _ASMm68K_TIMEX_H
   9
  10 #ifdef CONFIG_COLDFIRE
  11 /*
  12  * CLOCK_TICK_RATE should give the underlying frequency of the tick timer
  13  * to make ntp work best.  For Coldfires, that's the main clock.
  14  */
  15 #include <asm/coldfire.h>
  16 #define CLOCK_TICK_RATE MCF_CLK
  17 #else
  18 /*
  19  * This default CLOCK_TICK_RATE is probably wrong for many 68k boards
  20  * Users of those boards will need to check and modify accordingly
  21  */
  22 #define CLOCK_TICK_RATE 1193180 /* Underlying HZ */
  23 #endif
  24
  25 typedef unsigned long cycles_t;
  26
  27 static inline cycles_t get_cycles(void)
  28 {
  29         return 0;
  30 }
  31
  32 extern unsigned long (*mach_random_get_entropy)(void);
  33
  34 static inline unsigned long random_get_entropy(void)
  35 {
  36         if (mach_random_get_entropy)
  37                 return mach_random_get_entropy();
  38         return 0;
  39 }
  40 #define random_get_entropy      random_get_entropy
  41
  42 #endif