/* * 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 }