diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-12-08 16:33:30 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-12-11 14:32:43 +0000 |
| commit | 2f757f2ab7411cf0e2779012d8cda0cbf2f80d26 (patch) | |
| tree | 880e0c661948132d54ce238eb45cba9bb71314d4 /arch/arm/include | |
| parent | 3afb6e9c635f735c751148beddc195daec0e35ec (diff) | |
[ARM] dma: rejig DMA initialization
Rather than having the central DMA multiplexer call the architecture
specific DMA initialization function, have each architecture DMA
initialization function use core_initcall(), and register each DMA
channel separately with the multiplexer.
This removes the array of dma structures in the central multiplexer,
replacing it with an array of pointers instead; this is more flexible
since it allows the drivers to wrap the DMA structure (eventually
allowing us to transition non-ISA DMA drivers away.)
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/mach/dma.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/arm/include/asm/mach/dma.h b/arch/arm/include/asm/mach/dma.h index 281ae7e40a90..38a3693f1258 100644 --- a/arch/arm/include/asm/mach/dma.h +++ b/arch/arm/include/asm/mach/dma.h @@ -48,10 +48,12 @@ struct dma_struct { struct dma_ops *d_ops; }; -/* Prototype: void arch_dma_init(dma) - * Purpose : Initialise architecture specific DMA - * Params : dma - pointer to array of DMA structures +/* + * isa_dma_add - add an ISA-style DMA channel */ -extern void arch_dma_init(dma_t *dma); +extern int isa_dma_add(unsigned int, dma_t *dma); -extern void isa_init_dma(dma_t *dma); +/* + * Add the ISA DMA controller. Always takes channels 0-7. + */ +extern void isa_init_dma(void); |