xref: /openbmc/linux/arch/m68k/include/asm/timex.h (revision 6c33a6f4)
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
43