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58 lines
1.1 KiB
58 lines
1.1 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* linux/arch/arm/kernel/dma-ebsa285.c |
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* |
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* Copyright (C) 1998 Phil Blundell |
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* |
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* DMA functions specific to EBSA-285/CATS architectures |
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* |
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* Changelog: |
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* 09-Nov-1998 RMK Split out ISA DMA functions to dma-isa.c |
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* 17-Mar-1999 RMK Allow any EBSA285-like architecture to have |
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* ISA DMA controllers. |
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*/ |
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#include <linux/init.h> |
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#include <linux/io.h> |
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#include <linux/spinlock.h> |
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#include <linux/scatterlist.h> |
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#include <asm/dma.h> |
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#include <asm/mach/dma.h> |
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#include <asm/hardware/dec21285.h> |
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#if 0 |
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static int fb_dma_request(unsigned int chan, dma_t *dma) |
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{ |
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return -EINVAL; |
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} |
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static void fb_dma_enable(unsigned int chan, dma_t *dma) |
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{ |
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} |
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static void fb_dma_disable(unsigned int chan, dma_t *dma) |
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{ |
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} |
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static struct dma_ops fb_dma_ops = { |
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.type = "fb", |
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.request = fb_dma_request, |
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.enable = fb_dma_enable, |
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.disable = fb_dma_disable, |
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}; |
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#endif |
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static int __init fb_dma_init(void) |
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{ |
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#if 0 |
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dma[_DC21285_DMA(0)].d_ops = &fb_dma_ops; |
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dma[_DC21285_DMA(1)].d_ops = &fb_dma_ops; |
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#endif |
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#ifdef CONFIG_ISA_DMA |
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if (footbridge_cfn_mode()) |
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isa_init_dma(); |
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#endif |
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return 0; |
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} |
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core_initcall(fb_dma_init);
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