1 // SPDX-License-Identifier: GPL-2.0-only
6  * - a resolution (-r) of 3600 will report 3600 "ticks" in one full rotation
8  * - any other resolution will report N "ticks" in a full rotation with haptic
42 static void int_exit(int sig)  in int_exit()  argument
53 		"    -r N\t set the given resolution to the device (number of ticks per 360°)\n\n",  in usage()
58 		"- a resolution (-r) of 3600 will report 3600 'ticks' in one full rotation\n"  in usage()
60 		"- any other resolution will report N 'ticks' in a full rotation with haptic\n"  in usage()
69 	const char *str_id, *dir;  in get_hid_id()  local
74 	snprintf(uevent, sizeof(uevent) - 1, "%s/uevent", path);  in get_hid_id()
78 		return -ENOENT;  in get_hid_id()
82 	dir = basename((char *)path);  in get_hid_id()
84 	str_id = dir + sizeof("0003:0001:0A37.");  in get_hid_id()
92 		.retval = -1,  in set_haptic()
100 	haptic_fd = bpf_program__fd(skel->progs.set_haptic);  in set_haptic()
123 	while ((opt = getopt(argc, argv, optstr)) != -1) {  in main()
128 				long l = -1;  in main()
133 						l = -1;  in main()
138 						"invalid r option %s - expecting a number\n",  in main()
166 		return -1;  in main()
175 	skel->struct_ops.surface_dial->hid_id = hid_id;  in main()
179 		fprintf(stderr, "can not load HID-BPF program: %m\n");  in main()
183 	skel->data->resolution = resolution;  in main()
184 	skel->data->physical = (int)(resolution / 72);  in main()
186 	link = bpf_map__attach_struct_ops(skel->maps.surface_dial);  in main()
188 		fprintf(stderr, "can not attach HID-BPF program: %m\n");  in main()