1 // SPDX-License-Identifier: GPL-2.0
3 * linux/arch/arm/kernel/dma-ebsa285.c
5 * Copyright (C) 1998 Phil Blundell
7 * DMA functions specific to EBSA-285/CATS architectures
10 * 09-Nov-1998 RMK Split out ISA DMA functions to dma-isa.c
11 * 17-Mar-1999 RMK Allow any EBSA285-like architecture to have
12 * ISA DMA controllers.
14 #include <linux/init.h>
16 #include <linux/spinlock.h>
17 #include <linux/scatterlist.h>
21 #include <asm/mach/dma.h>
22 #include <asm/hardware/dec21285.h>
25 static int fb_dma_request(unsigned int chan, dma_t *dma)
30 static void fb_dma_enable(unsigned int chan, dma_t *dma)
34 static void fb_dma_disable(unsigned int chan, dma_t *dma)
38 static struct dma_ops fb_dma_ops = {
40 .request = fb_dma_request,
41 .enable = fb_dma_enable,
42 .disable = fb_dma_disable,
46 static int __init fb_dma_init(void)
49 dma[_DC21285_DMA(0)].d_ops = &fb_dma_ops;
50 dma[_DC21285_DMA(1)].d_ops = &fb_dma_ops;
53 if (footbridge_cfn_mode())
58 core_initcall(fb_dma_init);