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 */
13#include <linux/init.h>
14#include <linux/io.h>
15#include <linux/spinlock.h>
16
17#include <asm/dma.h>
18#include <asm/scatterlist.h>
19
20#include <asm/mach/dma.h>
21#include <asm/hardware/dec21285.h>
22
23#if 0
24static int fb_dma_request(unsigned int chan, dma_t *dma)
25{
26	return -EINVAL;
27}
28
29static void fb_dma_enable(unsigned int chan, dma_t *dma)
30{
31}
32
33static void fb_dma_disable(unsigned int chan, dma_t *dma)
34{
35}
36
37static struct dma_ops fb_dma_ops = {
38	.type		= "fb",
39	.request	= fb_dma_request,
40	.enable		= fb_dma_enable,
41	.disable	= fb_dma_disable,
42};
43#endif
44
45static int __init fb_dma_init(void)
46{
47#if 0
48	dma[_DC21285_DMA(0)].d_ops = &fb_dma_ops;
49	dma[_DC21285_DMA(1)].d_ops = &fb_dma_ops;
50#endif
51#ifdef CONFIG_ISA_DMA
52	if (footbridge_cfn_mode())
53		isa_init_dma();
54#endif
55	return 0;
56}
57core_initcall(fb_dma_init);