Messages in this thread | | | From | "Aguirre, Sergio" <> | Date | Wed, 24 Aug 2011 10:41:17 -0500 | Subject | Re: [PATCH 8/8] ARM: S5PV210: example of CMA private area for FIMC device on Goni board |
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Hi Marek/Kyungmin,
On Fri, Aug 19, 2011 at 04:27:44PM +0200, Marek Szyprowski wrote: > This patch is an example how device private CMA area can be activated. > It creates one CMA region and assigns it to the first s5p-fimc device on > Samsung Goni S5PC110 board. > > Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> > Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> > --- > arch/arm/mach-s5pv210/mach-goni.c | 4 ++++ > 1 files changed, 4 insertions(+), 0 deletions(-) > diff --git a/arch/arm/mach-s5pv210/mach-goni.c b/arch/arm/mach-s5pv210/mach-goni.c > index 14578f5..f766c45 100644 > --- a/arch/arm/mach-s5pv210/mach-goni.c > +++ b/arch/arm/mach-s5pv210/mach-goni.c > @@ -26,6 +26,7 @@ > #include <linux/input.h> > #include <linux/gpio.h> > #include <linux/interrupt.h> > +#include <linux/dma-contiguous.h> > > #include <asm/mach/arch.h> > #include <asm/mach/map.h> > @@ -857,6 +858,9 @@ static void __init goni_map_io(void) > static void __init goni_reserve(void) > { > s5p_mfc_reserve_mem(0x43000000, 8 << 20, 0x51000000, 8 << 20); > + > + /* Create private 16MiB contiguous memory area for s5p-fimc.0 device */ > + dma_declare_contiguous(&s5p_device_fimc0.dev, 16*SZ_1M, 0);
This is broken, since according to patch #0006, dma_declare_contiguous requires a 4th param (limit) which you're not providing here.
Regards, Sergio
> } > > static void __init goni_machine_init(void) > -- > 1.7.1.569.g6f426
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