mxcspi.h

QNX ADS BSP code for i.MX27 chips

/*
 * $QNXLicenseC: 
 * Copyright 2007, QNX Software Systems.  
 *  
 * Licensed under the Apache License, Version 2.0 (the "License"). You  
 * may not reproduce, modify or distribute this software except in  
 * compliance with the License. You may obtain a copy of the License  
 * at: http://www.apache.org/licenses/LICENSE-2.0  
 *  
 * Unless required by applicable law or agreed to in writing, software  
 * distributed under the License is distributed on an "AS IS" basis,  
 * WITHOUT WARRANTIES OF ANY KIND, either express or implied. 
 * 
 * This file may contain contributions from others, either as  
 * contributors under the License or as licensors under other terms.   
 * Please review this entire file for other proprietary rights or license  
 * notices, as well as the QNX Development Suite License Guide at  
 * http://licensing.qnx.com/license-guide/ for other information. 
 * $
 */



#ifndef _MX21_CSPI_H_INCLUDED
#define _MX21_CSPI_H_INCLUDED

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <errno.h>
#include <pthread.h>
#include <unistd.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/neutrino.h>
#include <hw/inout.h>
#include <hw/spi-master.h>
#include <arm/mx21.h>


#define	MX21_CSPI_PRIORITY		21
#define	MX21_CSPI_EVENT			1


#define MX21_CSPI_RXDATA		0x00	/* Receive data register */
#define MX21_CSPI_TXDATA		0x04	/* Transmit data register */
#define MX21_CSPI_CONREG		0x08	/* Control register */
#define MX21_CSPI_INTREG		0x0C	/* Interrupt control register */
#define	MX21_CSPI_TESTREG		0x10	/* Test register */
#define MX21_CSPI_PERIODREG		0x14	/* Sample period control register */
#define MX21_CSPI_DMAREG		0x18	/* DMA control register */
#define MX21_CSPI_RESETREG		0x1C	/* Reset register */



typedef struct {
	SPIDEV		spi;		/* This has to be the first element */

	unsigned	pbase;
	uintptr_t	vbase;
	int			irq;
	int			iid;
	int			chid, coid;

	uint32_t	bitrate;

	uint32_t	clock;
	uint32_t	period;

	uint8_t		*pbuf;
	int			xlen, tlen, rlen;
	int			dlen;
	int			dtime;		/* usec per data, for time out use */

	struct sigevent	spievent;
} mx21_cspi_t;

extern void *mx21_init(void *hdl, char *options);
extern void mx21_dinit(void *hdl);
extern void *mx21_xfer(void *hdl, uint32_t device, uint8_t *buf, int *len);
extern int mx21_setcfg(void *hdl, uint16_t device, spi_cfg_t *cfg);

extern int mx21_devinfo(void *hdl, uint32_t device, spi_devinfo_t *info);
extern int mx21_drvinfo(void *hdl, spi_drvinfo_t *info);

extern int mx21_xchange(mx21_cspi_t *mx21, uint8_t *buf, int len);
extern int mx21_read(mx21_cspi_t *mx21, uint8_t *buf, int len);
extern int mx21_write(mx21_cspi_t *mx21, uint8_t *buf, int len);

extern int mx21_attach_intr(mx21_cspi_t *mx21);
extern int mx21_wait(mx21_cspi_t *dev, int len);

extern int mx21_cfg(void *hdl, spi_cfg_t *cfg);

#endif