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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/kernel/dma-ebsa285.c | |
3 | * | |
4 | * Copyright (C) 1998 Phil Blundell | |
5 | * | |
6 | * DMA functions specific to EBSA-285/CATS architectures | |
7 | * | |
8 | * Changelog: | |
9 | * 09-Nov-1998 RMK Split out ISA DMA functions to dma-isa.c | |
10 | * 17-Mar-1999 RMK Allow any EBSA285-like architecture to have | |
11 | * ISA DMA controllers. | |
12 | */ | |
1da177e4 LT |
13 | #include <linux/init.h> |
14 | ||
15 | #include <asm/dma.h> | |
16 | #include <asm/io.h> | |
78ff18a4 | 17 | #include <asm/scatterlist.h> |
1da177e4 LT |
18 | |
19 | #include <asm/mach/dma.h> | |
20 | #include <asm/hardware/dec21285.h> | |
21 | ||
22 | #if 0 | |
23 | static int fb_dma_request(dmach_t channel, dma_t *dma) | |
24 | { | |
25 | return -EINVAL; | |
26 | } | |
27 | ||
28 | static void fb_dma_enable(dmach_t channel, dma_t *dma) | |
29 | { | |
30 | } | |
31 | ||
32 | static void fb_dma_disable(dmach_t channel, dma_t *dma) | |
33 | { | |
34 | } | |
35 | ||
36 | static struct dma_ops fb_dma_ops = { | |
37 | .type = "fb", | |
38 | .request = fb_dma_request, | |
39 | .enable = fb_dma_enable, | |
40 | .disable = fb_dma_disable, | |
41 | }; | |
42 | #endif | |
43 | ||
44 | void __init arch_dma_init(dma_t *dma) | |
45 | { | |
46 | #if 0 | |
47 | dma[_DC21285_DMA(0)].d_ops = &fb_dma_ops; | |
48 | dma[_DC21285_DMA(1)].d_ops = &fb_dma_ops; | |
49 | #endif | |
50 | #ifdef CONFIG_ISA_DMA | |
51 | if (footbridge_cfn_mode()) | |
52 | isa_init_dma(dma + _ISA_DMA(0)); | |
53 | #endif | |
54 | } |