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Revision 1.4, Fri Dec 21 17:40:29 2007 UTC (16 years, 4 months ago) by nbrk
Branch: MAIN
CVS Tags: HEAD
Changes since 1.3: +7 -2 lines 

add spi_cs{low,high}() to set CS line to low/high logic level.

/*
 * $Id: bus_spi.h,v 1.4 2007/12/21 17:40:29 nbrk Exp $
 */
#ifndef _SYS_BUS_SPI_H
#define _SYS_BUS_SPI_H
#include <sys/types.h>

struct spi_bus_handle {
	uint8_t 	(*sb_transmitfunc)(void *dd, uint8_t data);
	void 		(*sb_cslowfunc)(void *dd);
	void 		(*sb_cshighfunc)(void *dd);

	void 		*sb_dd; /* controller's devdata */

};

uint8_t 	spi_transmit(struct spi_bus_handle *sbh, uint8_t data);
void 		spi_cs_low(struct spi_bus_handle *sbh);
void 		spi_cs_high(struct spi_bus_handle *sbh);


#endif /* !_SYS_BUS_SPI_H */