lib: time: export usec_to_tick()

In the UEFI Stall() boottime service we need access to usec_to_tick().

Export the function.

Remove redundant implementation in arch/arm/mach-rockchip/rk_timer.c.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/arch/arm/mach-rockchip/rk_timer.c b/arch/arm/mach-rockchip/rk_timer.c
index f20e64f..29d379f 100644 (file)
--- a/arch/arm/mach-rockchip/rk_timer.c
+++ b/arch/arm/mach-rockchip/rk_timer.c
@@ -20,13 +20,6 @@ static uint64_t rockchip_get_ticks(void)
        return timebase_h << 32 | timebase_l;
 }
 
-static uint64_t usec_to_tick(unsigned int usec)
-{
-       uint64_t tick = usec;
-       tick *= CONFIG_SYS_TIMER_RATE / (1000 * 1000);
-       return tick;
-}
-
 void rockchip_udelay(unsigned int usec)
 {
        uint64_t tmp;

diff --git a/include/time.h b/include/time.h
index 9fd0d73..1e9b369 100644 (file)
--- a/include/time.h
+++ b/include/time.h
@@ -4,6 +4,7 @@
 #define _TIME_H
 
 #include <linux/typecheck.h>
+#include <linux/types.h>
 
 unsigned long get_timer(unsigned long base);
 
@@ -21,6 +22,14 @@ unsigned long timer_get_us(void);
  */
 void timer_test_add_offset(unsigned long offset);
 
+/**
+ * usec_to_tick() - convert microseconds to clock ticks
+ *
+ * @usec:      duration in microseconds
+ * Return:     duration in clock ticks
+ */
+uint64_t usec_to_tick(unsigned long usec);
+
 /*
  *     These inlines deal with timer wrapping correctly. You are
  *     strongly encouraged to use them

diff --git a/lib/time.c b/lib/time.c
index 9c55da6..f5751ab 100644 (file)
--- a/lib/time.c
+++ b/lib/time.c
@@ -139,7 +139,7 @@ unsigned long __weak notrace timer_get_us(void)
        return tick_to_time(get_ticks() * 1000);
 }
 
-static uint64_t usec_to_tick(unsigned long usec)
+uint64_t usec_to_tick(unsigned long usec)
 {
        uint64_t tick = usec;
        tick *= get_tbclk();