blob: 1f9b09b8ed88478746155d2291981e49a4f481d3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
/*
* linux/arch/arm/kernel/dma-ebsa285.c
*
* Copyright (C) 1998 Phil Blundell
*
* DMA functions specific to EBSA-285/CATS architectures
*
* Changelog:
* 09-Nov-1998 RMK Split out ISA DMA functions to dma-isa.c
* 17-Mar-1999 RMK Allow any EBSA285-like architecture to have
* ISA DMA controllers.
*/
#include <linux/init.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <asm/scatterlist.h>
#include <asm/mach/dma.h>
#include <asm/hardware/dec21285.h>
#if 0
static int fb_dma_request(dmach_t channel, dma_t *dma)
{
return -EINVAL;
}
static void fb_dma_enable(dmach_t channel, dma_t *dma)
{
}
static void fb_dma_disable(dmach_t channel, dma_t *dma)
{
}
static struct dma_ops fb_dma_ops = {
.type = "fb",
.request = fb_dma_request,
.enable = fb_dma_enable,
.disable = fb_dma_disable,
};
#endif
void __init arch_dma_init(dma_t *dma)
{
#if 0
dma[_DC21285_DMA(0)].d_ops = &fb_dma_ops;
dma[_DC21285_DMA(1)].d_ops = &fb_dma_ops;
#endif
#ifdef CONFIG_ISA_DMA
if (footbridge_cfn_mode())
isa_init_dma(dma + _ISA_DMA(0));
#endif
}
|
