This source file includes following definitions.
- versatile_sys_24mhz_read
- versatile_sched_clock_init
1
2
3
4
5
6
7 #include <linux/clocksource.h>
8 #include <linux/io.h>
9 #include <linux/of_address.h>
10 #include <linux/sched_clock.h>
11
12 #define SYS_24MHZ 0x05c
13
14 static void __iomem *versatile_sys_24mhz;
15
16 static u64 notrace versatile_sys_24mhz_read(void)
17 {
18 return readl(versatile_sys_24mhz);
19 }
20
21 static int __init versatile_sched_clock_init(struct device_node *node)
22 {
23 void __iomem *base = of_iomap(node, 0);
24
25 if (!base)
26 return -ENXIO;
27
28 versatile_sys_24mhz = base + SYS_24MHZ;
29
30 sched_clock_register(versatile_sys_24mhz_read, 32, 24000000);
31
32 return 0;
33 }
34 TIMER_OF_DECLARE(vexpress, "arm,vexpress-sysreg",
35 versatile_sched_clock_init);
36 TIMER_OF_DECLARE(versatile, "arm,versatile-sysreg",
37 versatile_sched_clock_init);