1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
55 static int cflag = -1;		/* SMBus cmd */
56 static int iflag = -1;		/* input data */
57 static int oflag = -1;		/* output data */
59 static int slave = -1;		/* slave address */  variable
67  * The I2C specs say that all addresses below 16 and above or equal
83 		"usage: smbmsg [-f dev] -p\n"  in usage()
84 		"       smbmsg [-f dev] -s slave [-F fmt] [-c cmd] [-w] "  in usage()
85 		"[-i incnt] [-o outcnt] [outdata ...]\n");  in usage()
98 	return (-1);  in getnum()
104 	unsigned char addr;  in probe_i2c()  local
112 	for (addr = MIN_I2C_ADDR; addr < MAX_I2C_ADDR; addr += 2) {  in probe_i2c()
113 		c.slave = addr;  in probe_i2c()
115 		if (ioctl(fd, SMB_RECVB, &c) != -1)  in probe_i2c()
117 		if (ioctl(fd, SMB_QUICK_WRITE, &c) != -1)  in probe_i2c()
120 			printf("Device @0x%02x: ", addr);  in probe_i2c()
136 	c.slave = slave;  in do_io()
144 	if (cflag == -1) {  in do_io()
146 		if (iflag == -1 && oflag == 0)  in do_io()
149 		else if (iflag == 0 && oflag == -1)  in do_io()
152 		else if (iflag == 1 && oflag == -1) {  in do_io()
154 			if (ioctl(fd, SMB_RECVB, &c) == -1)  in do_io()
155 				return (-1);  in do_io()
159 		} else if (iflag == -1 && oflag == 1) {  in do_io()
164 			return (-2);  in do_io()
166 	if (iflag == 1 && oflag == -1) {  in do_io()
168 		if (ioctl(fd, SMB_READB, &c) == -1)  in do_io()
169 			return (-1);  in do_io()
173 	} else if (iflag == -1 && oflag == 1) {  in do_io()
177 	} else if (wflag && iflag == 2 && oflag == -1) {  in do_io()
179 		if (ioctl(fd, SMB_READW, &c) == -1)  in do_io()
180 			return (-1);  in do_io()
184 	} else if (wflag && iflag == -1 && oflag == 2) {  in do_io()
194 		if (ioctl(fd, SMB_PCALL, &c) == -1)  in do_io()
195 			return (-1);  in do_io()
199 	} else if (iflag > 1 && oflag == -1) {  in do_io()
203 		if (ioctl(fd, SMB_BREAD, &c) == -1)  in do_io()
204 			return (-1);  in do_io()
212 	} else if (iflag == -1 && oflag > 1) {  in do_io()
219 	return (-2);  in do_io()
229 	while ((i = getopt(argc, argv, "F:c:f:i:o:ps:w")) != -1)  in main()
236 			if ((cflag = getnum(optarg)) == -1)  in main()
249 			if ((iflag = getnum(optarg)) == -1)  in main()
258 			if ((oflag = getnum(optarg)) == -1)  in main()
271 			if ((slave = getnum(optarg)) == -1)  in main()
274 			if (slave < MIN_I2C_ADDR || slave >= MAX_I2C_ADDR)  in main()
276 				     "Slave address out of range: %d",  in main()
277 				     slave);  in main()
287 	argc -= optind;  in main()
289 	if (errs || (slave != -1 && pflag) || (slave == -1 && !pflag))  in main()
292 	    !((iflag == 2 && oflag == -1) ||  in main()
293 	      (iflag == -1 && oflag == 2) ||  in main()
296 	if (!pflag && iflag == -1 && oflag == -1)  in main()
298 	if (pflag && (cflag != -1 || iflag != -1 || oflag != -1 || wflag != 0))  in main()
303 				errx(EX_USAGE, "Too few arguments for -o count");  in main()
304 			if ((n = getnum(*argv)) == -1)  in main()
309 			argc--;  in main()
311 		} else for (i = 0; i < oflag; i++, argv++, argc--) {  in main()
313 				errx(EX_USAGE, "Too few arguments for -o count");  in main()
314 			if ((n = getnum(*argv)) == -1)  in main()
324 	if ((fd = open(dev, O_RDWR)) == -1)  in main()
337 	if (i == -1)  in main()
339 	else if (i == -2)  in main()