From d1dcdf5718977c93805f9300b6c79f039db84c8b Mon Sep 17 00:00:00 2001 From: merge Date: Fri, 6 Feb 2009 00:22:54 +0000 Subject: MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414-1233879505 pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414-1233879505 / 1c405b6ccee468298e7ccbfd9a3a3f4d123207b0 ... parent commitmessage: From: merge MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414 stable-tracking-hist top was MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414 / 71be0a45396066b1f8f27f8f4f87937247a129e1 ... parent commitmessage: From: merge MERGE-via-mokopatches-tracking-hist-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011 mokopatches-tracking-hist top was MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011 / 1be1b01373f572a02c6f1f99863c8c11ed2f9f5b ... parent commitmessage: From: merge MERGE-via-master-MERGE-via-master-hist-1232625318 master top was MERGE-via-master-hist-1232625318 / dd4b117123ae66451695810017eb72fbdfc05df5 ... parent commitmessage: From: merge MERGE-master-patchset-edits --- arch/arm/plat-s3c24xx/include/plat/dma-core.h | 82 +++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 arch/arm/plat-s3c24xx/include/plat/dma-core.h (limited to 'arch/arm/plat-s3c24xx/include/plat/dma-core.h') diff --git a/arch/arm/plat-s3c24xx/include/plat/dma-core.h b/arch/arm/plat-s3c24xx/include/plat/dma-core.h new file mode 100644 index 00000000000..9d00aed2304 --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/dma-core.h @@ -0,0 +1,82 @@ +/* linux/arch/arm/plat-s3c24xx/include/plat/dma-core.h + * + * Copyright (C) 2006 Simtec Electronics + * Ben Dooks + * + * Samsung S3C24XX DMA support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +extern struct sysdev_class dma_sysclass; +extern struct s3c2410_dma_chan s3c2410_chans[S3C2410_DMA_CHANNELS]; + +#define DMA_CH_VALID (1<<31) +#define DMA_CH_NEVER (1<<30) + +struct s3c24xx_dma_addr { + unsigned long from; + unsigned long to; +}; + +/* struct s3c24xx_dma_map + * + * this holds the mapping information for the channel selected + * to be connected to the specified device +*/ + +struct s3c24xx_dma_map { + const char *name; + struct s3c24xx_dma_addr hw_addr; + + unsigned long channels[S3C2410_DMA_CHANNELS]; + unsigned long channels_rx[S3C2410_DMA_CHANNELS]; +}; + +struct s3c24xx_dma_selection { + struct s3c24xx_dma_map *map; + unsigned long map_size; + unsigned long dcon_mask; + + void (*select)(struct s3c2410_dma_chan *chan, + struct s3c24xx_dma_map *map); + + void (*direction)(struct s3c2410_dma_chan *chan, + struct s3c24xx_dma_map *map, + enum s3c2410_dmasrc dir); +}; + +extern int s3c24xx_dma_init_map(struct s3c24xx_dma_selection *sel); + +/* struct s3c24xx_dma_order_ch + * + * channel map for one of the `enum dma_ch` dma channels. the list + * entry contains a set of low-level channel numbers, orred with + * DMA_CH_VALID, which are checked in the order in the array. +*/ + +struct s3c24xx_dma_order_ch { + unsigned int list[S3C2410_DMA_CHANNELS]; /* list of channels */ + unsigned int flags; /* flags */ +}; + +/* struct s3c24xx_dma_order + * + * information provided by either the core or the board to give the + * dma system a hint on how to allocate channels +*/ + +struct s3c24xx_dma_order { + struct s3c24xx_dma_order_ch channels[DMACH_MAX]; +}; + +extern int s3c24xx_dma_order_set(struct s3c24xx_dma_order *map); + +/* DMA init code, called from the cpu support code */ + +extern int s3c2410_dma_init(void); + +extern int s3c24xx_dma_init(unsigned int channels, unsigned int irq, + unsigned int stride); -- cgit v1.2.3