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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-12-18 16:06:25 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-01-25 15:04:03 +0400 |
| commit | cc6e75af8df7aa40019ff58357170c8dd960281f (patch) | |
| tree | a82c61d4f7af8bf96d238530ced587e1d28854f6 | |
| parent | 2eac58d5026e4ec8b17ff8b62877fea9e1d2f1b3 (diff) | |
| download | linux-cc6e75af8df7aa40019ff58357170c8dd960281f.tar.xz | |
ARM: amba: provide common initializers for static amba devices
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | include/linux/amba/bus.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h index e1929620e5a8..a9fab831caf8 100644 --- a/include/linux/amba/bus.h +++ b/include/linux/amba/bus.h @@ -92,4 +92,37 @@ void amba_release_regions(struct amba_device *); #define amba_manf(d) AMBA_MANF_BITS((d)->periphid) #define amba_part(d) AMBA_PART_BITS((d)->periphid) +#define __AMBA_DEV(busid, data, mask) \ + { \ + .coherent_dma_mask = mask, \ + .init_name = busid, \ + .platform_data = data, \ + } + +/* + * APB devices do not themselves have the ability to address memory, + * so DMA masks should be zero (much like USB peripheral devices.) + * The DMA controller DMA masks should be used instead (much like + * USB host controllers in conventional PCs.) + */ +#define AMBA_APB_DEVICE(name, busid, id, base, irqs, data) \ +struct amba_device name##_device = { \ + .dev = __AMBA_DEV(busid, data, 0), \ + .res = DEFINE_RES_MEM(base, SZ_4K), \ + .irq = irqs, \ + .periphid = id, \ +} + +/* + * AHB devices are DMA capable, so set their DMA masks + */ +#define AMBA_AHB_DEVICE(name, busid, id, base, irqs, data) \ +struct amba_device name##_device = { \ + .dev = __AMBA_DEV(busid, data, ~0ULL), \ + .res = DEFINE_RES_MEM(base, SZ_4K), \ + .dma_mask = ~0ULL, \ + .irq = irqs, \ + .periphid = id, \ +} + #endif |