59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* 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 <linux/io.h>
|
||
|
|
#include <linux/spinlock.h>
|
||
|
|
#include <linux/scatterlist.h>
|
||
|
|
|
||
|
|
#include <asm/dma.h>
|
||
|
|
|
||
|
|
#include <asm/mach/dma.h>
|
||
|
|
#include <asm/hardware/dec21285.h>
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
static int fb_dma_request(unsigned int chan, dma_t *dma)
|
||
|
|
{
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void fb_dma_enable(unsigned int chan, dma_t *dma)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
static void fb_dma_disable(unsigned int chan, 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
|
||
|
|
|
||
|
|
static int __init fb_dma_init(void)
|
||
|
|
{
|
||
|
|
#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();
|
||
|
|
#endif
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
core_initcall(fb_dma_init);
|