diff options
Diffstat (limited to 'arch/arm/mach-ixp4xx')
| -rw-r--r-- | arch/arm/mach-ixp4xx/common.c | 14 | ||||
| -rw-r--r-- | arch/arm/mach-ixp4xx/include/mach/timex.h | 16 |
2 files changed, 12 insertions, 18 deletions
diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c index be882c95bd36..fc4b7b24265e 100644 --- a/arch/arm/mach-ixp4xx/common.c +++ b/arch/arm/mach-ixp4xx/common.c @@ -23,7 +23,6 @@ #include <linux/interrupt.h> #include <linux/bitops.h> #include <linux/time.h> -#include <linux/timex.h> #include <linux/clocksource.h> #include <linux/clockchips.h> #include <linux/io.h> @@ -44,6 +43,17 @@ #include <asm/mach/irq.h> #include <asm/mach/time.h> +#define IXP4XX_TIMER_FREQ 66666000 + +/* + * The timer register doesn't allow to specify the two least significant bits of + * the timeout value and assumes them being zero. So make sure IXP4XX_LATCH is + * the best value with the two least significant bits unset. + */ +#define IXP4XX_LATCH DIV_ROUND_CLOSEST(IXP4XX_TIMER_FREQ, \ + (IXP4XX_OST_RELOAD_MASK + 1) * HZ) * \ + (IXP4XX_OST_RELOAD_MASK + 1) + static void __init ixp4xx_clocksource_init(void); static void __init ixp4xx_clockevent_init(void); static struct clock_event_device clockevent_ixp4xx; @@ -519,7 +529,7 @@ static void ixp4xx_set_mode(enum clock_event_mode mode, switch (mode) { case CLOCK_EVT_MODE_PERIODIC: - osrt = LATCH & ~IXP4XX_OST_RELOAD_MASK; + osrt = IXP4XX_LATCH & ~IXP4XX_OST_RELOAD_MASK; opts = IXP4XX_OST_ENABLE; break; case CLOCK_EVT_MODE_ONESHOT: diff --git a/arch/arm/mach-ixp4xx/include/mach/timex.h b/arch/arm/mach-ixp4xx/include/mach/timex.h deleted file mode 100644 index 0396d89f947c..000000000000 --- a/arch/arm/mach-ixp4xx/include/mach/timex.h +++ /dev/null @@ -1,16 +0,0 @@ -/* - * arch/arm/mach-ixp4xx/include/mach/timex.h - * - */ - -#include <mach/ixp4xx-regs.h> - -/* - * We use IXP425 General purpose timer for our timer needs, it runs at - * 66.66... MHz. We do a convulted calculation of CLOCK_TICK_RATE b/c the - * timer register ignores the bottom 2 bits of the LATCH value. - */ -#define IXP4XX_TIMER_FREQ 66666000 -#define CLOCK_TICK_RATE \ - (((IXP4XX_TIMER_FREQ / HZ & ~IXP4XX_OST_RELOAD_MASK) + 1) * HZ) - |