projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 1da177e4 LT |
2 | /* |
| 3 | * linux/arch/arm/kernel/dma-ebsa285.c | |
| 4 | * | |
| 5 | * Copyright (C) 1998 Phil Blundell | |
| 6 | * | |
| 7 | * DMA functions specific to EBSA-285/CATS architectures | |
| 8 | * | |
| 9 | * Changelog: | |
| 10 | * 09-Nov-1998 RMK Split out ISA DMA functions to dma-isa.c | |
| 11 | * 17-Mar-1999 RMK Allow any EBSA285-like architecture to have | |
| 12 | * ISA DMA controllers. | |
| 13 | */ | |
| 1da177e4 | 14 | #include <linux/init.h> |
| fced80c7 | 15 | #include <linux/io.h> |
| 70d13e08 | 16 | #include <linux/spinlock.h> |
| 84be456f | 17 | #include <linux/scatterlist.h> |
| 1da177e4 LT |
18 | |
| 19 | #include <asm/dma.h> | |
| 1da177e4 LT |
20 | |
| 21 | #include <asm/mach/dma.h> | |
| 22 | #include <asm/hardware/dec21285.h> | |
| 23 | ||
| 24 | #if 0 | |
| 1df81302 | 25 | static int fb_dma_request(unsigned int chan, dma_t *dma) |
| 1da177e4 LT |
26 | { |
| 27 | return -EINVAL; | |
| 28 | } | |
| 29 | ||
| 1df81302 | 30 | static void fb_dma_enable(unsigned int chan, dma_t *dma) |
| 1da177e4 LT |
31 | { |
| 32 | } | |
| 33 | ||
| 1df81302 | 34 | static void fb_dma_disable(unsigned int chan, dma_t *dma) |
| 1da177e4 LT |
35 | { |
| 36 | } | |
| 37 | ||
| 38 | static struct dma_ops fb_dma_ops = { | |
| 39 | .type = "fb", | |
| 40 | .request = fb_dma_request, | |
| 41 | .enable = fb_dma_enable, | |
| 42 | .disable = fb_dma_disable, | |
| 43 | }; | |
| 44 | #endif | |
| 45 | ||
| 2f757f2a | 46 | static int __init fb_dma_init(void) |
| 1da177e4 LT |
47 | { |
| 48 | #if 0 | |
| 49 | dma[_DC21285_DMA(0)].d_ops = &fb_dma_ops; | |
| 50 | dma[_DC21285_DMA(1)].d_ops = &fb_dma_ops; | |
| 51 | #endif | |
| 52 | #ifdef CONFIG_ISA_DMA | |
| 53 | if (footbridge_cfn_mode()) | |
| 2f757f2a | 54 | isa_init_dma(); |
| 1da177e4 | 55 | #endif |
| 2f757f2a | 56 | return 0; |
| 1da177e4 | 57 | } |
| 2f757f2a | 58 | core_initcall(fb_dma_init); |