File: [local] / sys / dev / spivar.h (download)
Revision 1.1, Tue Mar 4 16:09:35 2008 UTC (16 years, 6 months ago) by nbrk
Branch point for: MAIN
Initial revision
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/* $Id: spivar.h,v 1.1 2008/03/04 16:09:35 nbrk Exp $ */
#ifndef _DEV_SPIVAR_H_
#define _DEV_SPIVAR_H_
/*
* SPI bus interface.
*/
struct spi_bus {
void *bus_cookie;
uint32_t bus_speed;
int (*bus_shift_1)(void *, uint8_t);
#if 0
uint16_t (*bus_shift_2)(void *, uint16_t);
uint32_t (*bus_shift_4)(void *, uint32_t);
#endif
int (*bus_acquire)(void *);
void (*bus_release)(void *);
};
/*
* Methods.
*/
int spi_shift_1(void *, uint8_t);
uint16_t spi_shift_2(void *, uint16_t);
uint32_t spi_shift_4(void *, uint32_t);
int spi_acquire(void *);
void spi_release(void *);
/*
* Attachment.
*/
struct spibus_attach_args {
void *sba_spisc;
struct spi_bus *sba_bus;
};
int spibus_print(void *, const char *);
#endif /* !_DEV_SPIVAR_H_ */