| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/kernel/dma-ebsa285.c |
| 3 | * |
| 4 | * Copyright (C) 1998 Phil Blundell |
| 5 | * |
| 6 | * DMA functions specific to EBSA-285/CATS architectures |
| 7 | * |
| 8 | * Changelog: |
| 9 | * 09-Nov-1998 RMK Split out ISA DMA functions to dma-isa.c |
| 10 | * 17-Mar-1999 RMK Allow any EBSA285-like architecture to have |
| 11 | * ISA DMA controllers. |
| 12 | */ |
| 13 | #include <linux/config.h> |
| 14 | #include <linux/init.h> |
| 15 | |
| 16 | #include <asm/dma.h> |
| 17 | #include <asm/io.h> |
| 18 | |
| 19 | #include <asm/mach/dma.h> |
| 20 | #include <asm/hardware/dec21285.h> |
| 21 | |
| 22 | #if 0 |
| 23 | static int fb_dma_request(dmach_t channel, dma_t *dma) |
| 24 | { |
| 25 | return -EINVAL; |
| 26 | } |
| 27 | |
| 28 | static void fb_dma_enable(dmach_t channel, dma_t *dma) |
| 29 | { |
| 30 | } |
| 31 | |
| 32 | static void fb_dma_disable(dmach_t channel, dma_t *dma) |
| 33 | { |
| 34 | } |
| 35 | |
| 36 | static struct dma_ops fb_dma_ops = { |
| 37 | .type = "fb", |
| 38 | .request = fb_dma_request, |
| 39 | .enable = fb_dma_enable, |
| 40 | .disable = fb_dma_disable, |
| 41 | }; |
| 42 | #endif |
| 43 | |
| 44 | void __init arch_dma_init(dma_t *dma) |
| 45 | { |
| 46 | #if 0 |
| 47 | dma[_DC21285_DMA(0)].d_ops = &fb_dma_ops; |
| 48 | dma[_DC21285_DMA(1)].d_ops = &fb_dma_ops; |
| 49 | #endif |
| 50 | #ifdef CONFIG_ISA_DMA |
| 51 | if (footbridge_cfn_mode()) |
| 52 | isa_init_dma(dma + _ISA_DMA(0)); |
| 53 | #endif |
| 54 | } |