| Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame^] | 1 | /* linux/include/asm-arm/plat-s3c24xx/dma.h |
| Ben Dooks | 505788c | 2006-09-15 23:42:24 +0100 | [diff] [blame] | 2 | * |
| 3 | * Copyright (C) 2006 Simtec Electronics |
| 4 | * Ben Dooks <ben@simtec.co.uk> |
| 5 | * |
| 6 | * Samsung S3C24XX DMA support |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | extern struct sysdev_class dma_sysclass; |
| 14 | extern struct s3c2410_dma_chan s3c2410_chans[S3C2410_DMA_CHANNELS]; |
| 15 | |
| 16 | #define DMA_CH_VALID (1<<31) |
| 17 | |
| 18 | struct s3c24xx_dma_addr { |
| 19 | unsigned long from; |
| 20 | unsigned long to; |
| 21 | }; |
| 22 | |
| 23 | /* struct s3c24xx_dma_map |
| 24 | * |
| 25 | * this holds the mapping information for the channel selected |
| 26 | * to be connected to the specified device |
| 27 | */ |
| 28 | |
| 29 | struct s3c24xx_dma_map { |
| 30 | const char *name; |
| 31 | struct s3c24xx_dma_addr hw_addr; |
| 32 | |
| 33 | unsigned long channels[S3C2410_DMA_CHANNELS]; |
| 34 | }; |
| 35 | |
| 36 | struct s3c24xx_dma_selection { |
| 37 | struct s3c24xx_dma_map *map; |
| 38 | unsigned long map_size; |
| 39 | unsigned long dcon_mask; |
| 40 | |
| 41 | void (*select)(struct s3c2410_dma_chan *chan, |
| 42 | struct s3c24xx_dma_map *map); |
| 43 | }; |
| 44 | |
| 45 | extern int s3c24xx_dma_init_map(struct s3c24xx_dma_selection *sel); |