blob: af47512dd0553ac90189434284e9787ea3f37b5a (
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
|
/*
* arch/arm/kernel/dma-dummy.c
*
* Copyright (C) 1998 Russell King
*
* Dummy DMA functions
*/
#include <linux/sched.h>
#include <linux/init.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <asm/hardware.h>
#include "dma.h"
int arch_request_dma(dmach_t channel, dma_t *dma, const char *devname)
{
return -EINVAL;
}
void arch_free_dma(dmach_t channel, dma_t *dma)
{
printk ("arch_free_dma: invalid channel %d\n", channel);
}
void arch_enable_dma(dmach_t channel, dma_t *dma)
{
printk ("arch_enable_dma: invalid channel %d\n", channel);
}
void arch_disable_dma(dmach_t channel, dma_t *dma)
{
printk ("arch_disable_dma: invalid channel %d\n", channel);
}
int arch_get_dma_residue(dmach_t channel, dma_t *dma)
{
printk ("arch_get_dma_residue: invalid channel %d\n", channel);
return 0;
}
__initfunc(void arch_dma_init(dma_t *dma))
{
}
|