diff options
Diffstat (limited to 'drivers/clocksource/clksrc-dbx500-prcmu.c')
| -rw-r--r-- | drivers/clocksource/clksrc-dbx500-prcmu.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/clocksource/clksrc-dbx500-prcmu.c b/drivers/clocksource/clksrc-dbx500-prcmu.c index fb6b6d28b60..24e8e22f236 100644 --- a/drivers/clocksource/clksrc-dbx500-prcmu.c +++ b/drivers/clocksource/clksrc-dbx500-prcmu.c @@ -14,6 +14,9 @@ */ #include <linux/clockchips.h> #include <linux/clksrc-dbx500-prcmu.h> +#ifdef CONFIG_BOOTTIME +#include <linux/boottime.h> +#endif #include <asm/sched_clock.h> @@ -69,6 +72,23 @@ static u32 notrace dbx500_prcmu_sched_clock_read(void) #endif +#ifdef CONFIG_BOOTTIME +static unsigned long __init boottime_get_time(void) +{ + return div_s64(clocksource_cyc2ns(clocksource_dbx500_prcmu.read( + &clocksource_dbx500_prcmu), + clocksource_dbx500_prcmu.mult, + clocksource_dbx500_prcmu.shift), + 1000); +} + +static struct boottime_timer __initdata boottime_timer = { + .init = NULL, + .get_time = boottime_get_time, + .finalize = NULL, +}; +#endif + void __init clksrc_dbx500_prcmu_init(void __iomem *base) { clksrc_dbx500_timer_base = base; @@ -93,4 +113,7 @@ void __init clksrc_dbx500_prcmu_init(void __iomem *base) clocksource_calc_mult_shift(&clocksource_dbx500_prcmu, RATE_32K, SCHED_CLOCK_MIN_WRAP); clocksource_register(&clocksource_dbx500_prcmu); +#ifdef CONFIG_BOOTTIME + boottime_activate(&boottime_timer); +#endif } |