android_kernel_samsung_msm8976/include/asm-generic/dma.h
Arnd Bergmann ae49e80795 asm-generic: add legacy I/O header files
The dma.h, hw_irq.h, serial.h and timex.h files originally
described PC-style i8237, i8259A, i8250, i8253 and i8255 chips
as well as the VGA style text mode graphics.

Modern architectures live happily without these specific
interfaces, but a few definitions from these headers keep
getting used in common code.

The new generic headers are what most architectures use
anyway nowadays, just implementing the minimal definitions.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2009-06-11 21:02:42 +02:00

15 lines
514 B
C

#ifndef __ASM_GENERIC_DMA_H
#define __ASM_GENERIC_DMA_H
/*
* This file traditionally describes the i8237 PC style DMA controller.
* Most architectures don't have these any more and can get the minimal
* implementation from kernel/dma.c by not defining MAX_DMA_CHANNELS.
*
* Some code relies on seeing MAX_DMA_ADDRESS though.
*/
#define MAX_DMA_ADDRESS PAGE_OFFSET
extern int request_dma(unsigned int dmanr, const char *device_id);
extern void free_dma(unsigned int dmanr);
#endif /* __ASM_GENERIC_DMA_H */