options.c

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. 
 * $
 */


#include "proto.h"

int
mx21_options(mx21_dev_t *dev, int argc, char *argv[])
{
	int	c;
	int	prev_optind;
	int	done = 0;

	/* defaults */
	dev->physbase = MX21_I2C_BASE;
	dev->options  = 0;
	dev->irq      = 12;		/* i.MX21 default */
    dev->stop =1;	

	while (!done) {
		prev_optind = optind;
		c = getopt(argc, argv, "p:s:i:vl");
		switch (c) {
			case 'p':
				dev->physbase = strtoul(optarg, &optarg, NULL);
				break;

			case 's':
				dev->slave_addr = strtoul(optarg, &optarg, NULL);
				break;

			case 'i':
				dev->irq = strtoul(optarg, &optarg, NULL);
				break;

			case 'l':
				dev->options |= MX21_OPT_POLLING;
				break;

			case 'v':
				dev->options |= MX21_OPT_VERBOSE;
				break;

			case '?':
				if (optopt == '-') {
					++optind;
					break;
				}
				return -1;

			case -1:
				if (prev_optind < optind) /* -- */
					return -1;

				if (argv[optind] == NULL) {
					done = 1;
					break;
				} 

				if (*argv[optind] != '-') {
					++optind;
					break;
				}
				return -1;

			case ':':
			default:
				return -1;
		}
	}

	return 0;
}