Subject: [PATCH V2 01/14] ARM: OMAP: Add DMTIMER definitions for posted mode

From: [email-masked] (Santosh Shilimkar)
Date: Wed, 7 Nov 2012 16:04:46 -0600

On Wednesday 07 November 2012 01:01 PM, Jon Hunter wrote:
> For OMAP2+ devices, when using DMTIMERs for system timers (clock-events and
> clock-source) the posted mode configuration of the timers is used. To allow
> the compiler to optimise the functions for configuring and reading the system
> timers, the posted flag variable is hard-coded with the value 1. To make it
> clear that posted mode is being used add some definitions so that it is more
> readable.
>
> Add separate definitions for the clock-events and clock-source timers so that
> we can change the posted mode of clock-events and clock-source independently.
>
> Signed-off-by: Jon Hunter <[email-masked]>
> ---
>   arch/arm/mach-omap2/timer.c               |   26 +++++++++++++++++++-------
>   arch/arm/plat-omap/include/plat/dmtimer.h |    4 ++++
>   2 files changed, 23 insertions(+), 7 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
> index 0758bae..28c6078 100644
> --- a/arch/arm/mach-omap2/timer.c
> +++ b/arch/arm/mach-omap2/timer.c
> @@ -82,6 +82,13 @@
>   #define INCREMENTER_DENUMERATOR_RELOAD_OFFSET		0x14
>   #define NUMERATOR_DENUMERATOR_MASK			0xfffff000
>
> +/*
> + * For clock-events timer, always use posted mode to
> + * minimise CPU overhead for configuring the timer.
> + */
> +#define OMAP_CLKEVT_POSTEDMODE	OMAP_TIMER_POSTED
> +#define OMAP_CLKSRC_POSTEDMODE	OMAP_TIMER_POSTED
> +
I don't see need of above defines. Just use OMAP_TIMER_POSTED directly
with API. Rest of the patch looks fine.

Apart from above one comment,
Acked-by: Santosh Shilimkar <[email-masked]>