projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | */ | |
| 1da177e4 | 13 | #include <linux/init.h> |
| fced80c7 | 14 | #include <linux/io.h> |
| 70d13e08 | 15 | #include <linux/spinlock.h> |
| 1da177e4 LT |
16 | |
| 17 | #include <asm/dma.h> | |
| 78ff18a4 | 18 | #include <asm/scatterlist.h> |
| 1da177e4 LT |
19 | |
| 20 | #include <asm/mach/dma.h> | |
| 21 | #include <asm/hardware/dec21285.h> | |
| 22 | ||
| 23 | #if 0 | |
| 24 | static int fb_dma_request(dmach_t channel, dma_t *dma) | |
| 25 | { | |
| 26 | return -EINVAL; | |
| 27 | } | |
| 28 | ||
| 29 | static void fb_dma_enable(dmach_t channel, dma_t *dma) | |
| 30 | { | |
| 31 | } | |
| 32 | ||
| 33 | static void fb_dma_disable(dmach_t channel, dma_t *dma) | |
| 34 | { | |
| 35 | } | |
| 36 | ||
| 37 | static struct dma_ops fb_dma_ops = { | |
| 38 | .type = "fb", | |
| 39 | .request = fb_dma_request, | |
| 40 | .enable = fb_dma_enable, | |
| 41 | .disable = fb_dma_disable, | |
| 42 | }; | |
| 43 | #endif | |
| 44 | ||
| 45 | void __init arch_dma_init(dma_t *dma) | |
| 46 | { | |
| 47 | #if 0 | |
| 48 | dma[_DC21285_DMA(0)].d_ops = &fb_dma_ops; | |
| 49 | dma[_DC21285_DMA(1)].d_ops = &fb_dma_ops; | |
| 50 | #endif | |
| 51 | #ifdef CONFIG_ISA_DMA | |
| 52 | if (footbridge_cfn_mode()) | |
| 53 | isa_init_dma(dma + _ISA_DMA(0)); | |
| 54 | #endif | |
| 55 | } |