3696a8a426
This patch provides core support for CM-X270 platform. Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
/*
|
|
* linux/include/asm-arm/arch-pxa/dma.h
|
|
*
|
|
* Author: Nicolas Pitre
|
|
* Created: Jun 15, 2001
|
|
* Copyright: MontaVista Software, Inc.
|
|
*
|
|
* 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.
|
|
*/
|
|
#ifndef __ASM_ARCH_DMA_H
|
|
#define __ASM_ARCH_DMA_H
|
|
|
|
/*
|
|
* Descriptor structure for PXA's DMA engine
|
|
* Note: this structure must always be aligned to a 16-byte boundary.
|
|
*/
|
|
|
|
typedef struct pxa_dma_desc {
|
|
volatile u32 ddadr; /* Points to the next descriptor + flags */
|
|
volatile u32 dsadr; /* DSADR value for the current transfer */
|
|
volatile u32 dtadr; /* DTADR value for the current transfer */
|
|
volatile u32 dcmd; /* DCMD value for the current transfer */
|
|
} pxa_dma_desc;
|
|
|
|
typedef enum {
|
|
DMA_PRIO_HIGH = 0,
|
|
DMA_PRIO_MEDIUM = 1,
|
|
DMA_PRIO_LOW = 2
|
|
} pxa_dma_prio;
|
|
|
|
#if defined(CONFIG_MACH_ARMCORE) && defined(CONFIG_PCI)
|
|
#define HAVE_ARCH_PCI_SET_DMA_MASK 1
|
|
#endif
|
|
|
|
/*
|
|
* DMA registration
|
|
*/
|
|
|
|
int __init pxa_init_dma(int num_ch);
|
|
|
|
int pxa_request_dma (char *name,
|
|
pxa_dma_prio prio,
|
|
void (*irq_handler)(int, void *),
|
|
void *data);
|
|
|
|
void pxa_free_dma (int dma_ch);
|
|
|
|
#endif /* _ASM_ARCH_DMA_H */
|