2 * Copyright © 2013 Intel Corporation
4 * Permission to use, copy, modify, distribute, and sell this software and
5 * its documentation for any purpose is hereby granted without fee, provided
6 * that the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation, and that the name of the copyright holders not be used in
9 * advertising or publicity pertaining to distribution of the software
10 * without specific, written prior permission. The copyright holders make
11 * no representations about the suitability of this software for any
12 * purpose. It is provided "as is" without express or implied warranty.
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
15 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
16 * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
17 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
18 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
19 * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
20 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
32 #include "udev-seat.h"
34 static const char default_seat[] = "seat0";
35 static const char default_seat_name[] = "default";
37 static struct udev_seat *
38 udev_seat_create(struct udev_input *input,
39 const char *device_seat,
40 const char *seat_name);
41 static struct udev_seat *
42 udev_seat_get_named(struct udev_input *input, const char *seat_name);
45 device_added(struct udev_device *udev_device, struct udev_input *input)
47 struct evdev_device *device;
50 const char *device_seat, *seat_name, *output_name;
51 const char *calibration_values;
52 struct udev_seat *seat;
54 device_seat = udev_device_get_property_value(udev_device, "ID_SEAT");
56 device_seat = default_seat;
58 if (strcmp(device_seat, input->seat_id))
61 devnode = udev_device_get_devnode(udev_device);
62 sysname = udev_device_get_sysname(udev_device);
64 /* Search for matching logical seat */
65 seat_name = udev_device_get_property_value(udev_device, "WL_SEAT");
67 seat_name = default_seat_name;
69 seat = udev_seat_get_named(input, seat_name);
72 libinput_seat_ref(&seat->base);
74 seat = udev_seat_create(input, device_seat, seat_name);
79 device = evdev_device_create(&seat->base, devnode, sysname);
80 libinput_seat_unref(&seat->base);
82 if (device == EVDEV_UNHANDLED_DEVICE) {
83 log_info("not using input device '%s'.\n", devnode);
85 } else if (device == NULL) {
86 log_info("failed to create input device '%s'.\n", devnode);
91 udev_device_get_property_value(udev_device,
94 if (calibration_values && sscanf(calibration_values,
96 &device->abs.calibration[0],
97 &device->abs.calibration[1],
98 &device->abs.calibration[2],
99 &device->abs.calibration[3],
100 &device->abs.calibration[4],
101 &device->abs.calibration[5]) == 6) {
102 device->abs.apply_calibration = 1;
103 log_info("Applying calibration: %f %f %f %f %f %f\n",
104 device->abs.calibration[0],
105 device->abs.calibration[1],
106 device->abs.calibration[2],
107 device->abs.calibration[3],
108 device->abs.calibration[4],
109 device->abs.calibration[5]);
112 output_name = udev_device_get_property_value(udev_device, "WL_OUTPUT");
114 device->output_name = strdup(output_name);
120 udev_input_add_devices(struct udev_input *input, struct udev *udev)
122 struct udev_enumerate *e;
123 struct udev_list_entry *entry;
124 struct udev_device *device;
125 const char *path, *sysname;
127 e = udev_enumerate_new(udev);
128 udev_enumerate_add_match_subsystem(e, "input");
129 udev_enumerate_scan_devices(e);
130 udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
131 path = udev_list_entry_get_name(entry);
132 device = udev_device_new_from_syspath(udev, path);
134 sysname = udev_device_get_sysname(device);
135 if (strncmp("event", sysname, 5) != 0) {
136 udev_device_unref(device);
140 if (device_added(device, input) < 0) {
141 udev_device_unref(device);
142 udev_enumerate_unref(e);
146 udev_device_unref(device);
148 udev_enumerate_unref(e);
154 evdev_udev_handler(void *data)
156 struct udev_input *input = data;
157 struct udev_device *udev_device;
158 struct evdev_device *device, *next;
161 struct udev_seat *seat;
163 udev_device = udev_monitor_receive_device(input->udev_monitor);
167 action = udev_device_get_action(udev_device);
171 if (strncmp("event", udev_device_get_sysname(udev_device), 5) != 0)
174 if (!strcmp(action, "add")) {
175 device_added(udev_device, input);
177 else if (!strcmp(action, "remove")) {
178 devnode = udev_device_get_devnode(udev_device);
179 list_for_each(seat, &input->base.seat_list, base.link) {
180 list_for_each_safe(device, next,
181 &seat->base.devices_list, base.link)
182 if (!strcmp(device->devnode, devnode)) {
183 log_info("input device %s, %s removed\n",
184 device->devname, device->devnode);
185 evdev_device_remove(device);
192 udev_device_unref(udev_device);
196 udev_input_remove_devices(struct udev_input *input)
198 struct evdev_device *device, *next;
199 struct udev_seat *seat, *tmp;
201 list_for_each_safe(seat, tmp, &input->base.seat_list, base.link) {
202 libinput_seat_ref(&seat->base);
203 list_for_each_safe(device, next,
204 &seat->base.devices_list, base.link) {
205 evdev_device_remove(device);
206 if (list_empty(&seat->base.devices_list)) {
207 /* if the seat may be referenced by the
208 client, so make sure it's dropped from
209 the seat list now, to be freed whenever
210 * the device is removed */
211 list_remove(&seat->base.link);
212 list_init(&seat->base.link);
215 libinput_seat_unref(&seat->base);
221 udev_input_disable(struct libinput *libinput)
223 struct udev_input *input = (struct udev_input*)libinput;
225 if (!input->udev_monitor)
228 udev_monitor_unref(input->udev_monitor);
229 input->udev_monitor = NULL;
230 libinput_remove_source(&input->base, input->udev_monitor_source);
231 input->udev_monitor_source = NULL;
233 udev_input_remove_devices(input);
237 udev_input_enable(struct libinput *libinput)
239 struct udev_input *input = (struct udev_input*)libinput;
240 struct udev *udev = input->udev;
243 if (input->udev_monitor)
246 input->udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
247 if (!input->udev_monitor) {
248 log_info("udev: failed to create the udev monitor\n");
252 udev_monitor_filter_add_match_subsystem_devtype(input->udev_monitor,
255 if (udev_monitor_enable_receiving(input->udev_monitor)) {
256 log_info("udev: failed to bind the udev monitor\n");
257 udev_monitor_unref(input->udev_monitor);
258 input->udev_monitor = NULL;
262 fd = udev_monitor_get_fd(input->udev_monitor);
263 input->udev_monitor_source = libinput_add_fd(&input->base,
267 if (!input->udev_monitor_source) {
268 udev_monitor_unref(input->udev_monitor);
269 input->udev_monitor = NULL;
273 if (udev_input_add_devices(input, udev) < 0) {
274 udev_input_disable(libinput);
282 udev_input_destroy(struct libinput *input)
284 struct udev_input *udev_input = (struct udev_input*)input;
289 udev_unref(udev_input->udev);
290 free(udev_input->seat_id);
294 udev_seat_destroy(struct libinput_seat *seat)
296 struct udev_seat *useat = (struct udev_seat*)seat;
300 static struct udev_seat *
301 udev_seat_create(struct udev_input *input,
302 const char *device_seat,
303 const char *seat_name)
305 struct udev_seat *seat;
307 seat = zalloc(sizeof *seat);
311 libinput_seat_init(&seat->base, &input->base,
312 device_seat, seat_name,
314 list_insert(&input->base.seat_list, &seat->base.link);
319 static struct udev_seat *
320 udev_seat_get_named(struct udev_input *input, const char *seat_name)
322 struct udev_seat *seat;
324 list_for_each(seat, &input->base.seat_list, base.link) {
325 if (strcmp(seat->base.logical_name, seat_name) == 0)
332 static const struct libinput_interface_backend interface_backend = {
333 .resume = udev_input_enable,
334 .suspend = udev_input_disable,
335 .destroy = udev_input_destroy,
338 LIBINPUT_EXPORT struct libinput *
339 libinput_create_from_udev(const struct libinput_interface *interface,
344 struct udev_input *input;
346 if (!interface || !udev || !seat_id)
349 input = zalloc(sizeof *input);
353 if (libinput_init(&input->base, interface,
354 &interface_backend, user_data) != 0) {
359 input->udev = udev_ref(udev);
360 input->seat_id = strdup(seat_id);
362 if (udev_input_enable(&input->base) < 0) {
364 libinput_destroy(&input->base);