On Tue, 9 Jan 2007 [email protected] wrote:
> Add a clockevent driver for pxa systems. This patch also removes the pxa
> dyntick support since it is not necessary anymore with generic dynamic
> tick support
>
> Signed-off-by: Luotao Fu <[email protected]>
> Signed-off-by: Sascha Hauer <[email protected]>
>
> ---
> arch/arm/mach-pxa/time.c | 106 ++++++++++++++++++++++-------------------------
> 1 file changed, 51 insertions(+), 55 deletions(-)
>
> Index: arch/arm/mach-pxa/time.c
> ===================================================================
> --- a/arch/arm/mach-pxa/time.c.orig
> +++ b/arch/arm/mach-pxa/time.c
> @@ -19,6 +19,7 @@
> #include <linux/errno.h>
> #include <linux/sched.h>
> #include <linux/clocksource.h>
> +#include <linux/clockchips.h>
>
> #include <asm/system.h>
> #include <asm/hardware.h>
> @@ -29,6 +30,50 @@
> #include <asm/mach/time.h>
> #include <asm/arch/pxa-regs.h>
>
> +static u32 clockevent_mode = 0;
> +
> +static void pxa_set_next_event(unsigned long evt,
> + struct clock_event_device *unused)
> +{
> + OSMR0 = OSCR + evt;
> +}
This doesn't work for me in various nasty ways. Please, check for a
minimum delay or loop to get ahead of time. See code in the "old" timer
ISR. See how it unconditionally adds at least 10 ticks...
Thanks
Guennadi
---
Guennadi Liakhovetski
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