clocksource: rockchip_timer: support timer-based delay

diff --git a/drivers/clocksource/rockchip_timer.c b/drivers/clocksource/rockchip_timer.c
index 124869d37368fd796ac49770273d213550ab647a..65fa2393cf77c678a519de2b5450d3e11827ac2d 100644 (file)
--- a/drivers/clocksource/rockchip_timer.c
+++ b/drivers/clocksource/rockchip_timer.c
@@ -17,6 +17,7 @@
 #include <linux/of_irq.h>
 #include <linux/of_address.h>
 
+#include <asm/delay.h>
 #include <asm/localtimer.h>
 #include <asm/sched_clock.h>
 
@@ -225,6 +226,11 @@ static void __init rk_timer_init_ce_timer(struct device_node *np, unsigned int c
        irq->handler = rk_timer_clockevent_interrupt;
 }
 
+static struct delay_timer rk_delay_timer = {
+       .read_current_timer = (unsigned long (*)(void))rockchip_read_sched_clock,
+       .freq = 24000000,
+};
+
 static int num_called;
 static void __init rk_timer_init(struct device_node *np)
 {
@@ -233,6 +239,7 @@ static void __init rk_timer_init(struct device_node *np)
                rk_timer_init_clocksource(np);
                setup_sched_clock(rockchip_read_sched_clock, 32, 24000000);
                local_timer_register(&rk_local_timer_ops);
+               register_current_timer_delay(&rk_delay_timer);
                break;
        default:
                rk_timer_init_ce_timer(np, num_called - 1);