| /* |
| * 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 |
| } |