From mboxrd@z Thu Jan 1 00:00:00 1970 From: santosh.shilimkar@ti.com (Santosh Shilimkar) Date: Wed, 7 Nov 2012 16:04:46 -0600 Subject: [PATCH V2 01/14] ARM: OMAP: Add DMTIMER definitions for posted mode In-Reply-To: <1352314890-22224-2-git-send-email-jon-hunter@ti.com> References: <1352314890-22224-1-git-send-email-jon-hunter@ti.com> <1352314890-22224-2-git-send-email-jon-hunter@ti.com> Message-ID: <509ADAFE.4070109@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 > --- > 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