--- /dev/null
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission. The copyright holders make
+ * no representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include "compositor.h"
+#include "launcher-util.h"
+#include "evdev.h"
+#include "udev-seat.h"
+
+static const char default_seat[] = "seat0";
+
+static int
+device_added(struct udev_device *udev_device, struct udev_seat *master)
+{
+ struct weston_compositor *c;
+ struct evdev_device *device;
+ const char *devnode;
+ const char *device_seat;
+ const char *calibration_values;
+ int fd;
+
+ device_seat = udev_device_get_property_value(udev_device, "ID_SEAT");
+ if (!device_seat)
+ device_seat = default_seat;
+
+ if (strcmp(device_seat, master->seat_id))
+ return 0;
+
+ c = master->base.compositor;
+ devnode = udev_device_get_devnode(udev_device);
+
+ /* Use non-blocking mode so that we can loop on read on
+ * evdev_device_data() until all events on the fd are
+ * read. mtdev_get() also expects this. */
+ fd = weston_launcher_open(c, devnode, O_RDWR | O_NONBLOCK);
+ if (fd < 0) {
+ weston_log("opening input device '%s' failed.\n", devnode);
+ return -1;
+ }
+
+ device = evdev_device_create(&master->base, devnode, fd);
+ if (device == EVDEV_UNHANDLED_DEVICE) {
+ close(fd);
+ weston_log("not using input device '%s'.\n", devnode);
+ return 0;
+ } else if (device == NULL) {
+ close(fd);
+ weston_log("failed to create input device '%s'.\n", devnode);
+ return -1;
+ }
+
+ calibration_values =
+ udev_device_get_property_value(udev_device,
+ "WL_CALIBRATION");
+
+ if (calibration_values && sscanf(calibration_values,
+ "%f %f %f %f %f %f",
+ &device->abs.calibration[0],
+ &device->abs.calibration[1],
+ &device->abs.calibration[2],
+ &device->abs.calibration[3],
+ &device->abs.calibration[4],
+ &device->abs.calibration[5]) == 6) {
+ device->abs.apply_calibration = 1;
+ weston_log ("Applying calibration: %f %f %f %f %f %f\n",
+ device->abs.calibration[0],
+ device->abs.calibration[1],
+ device->abs.calibration[2],
+ device->abs.calibration[3],
+ device->abs.calibration[4],
+ device->abs.calibration[5]);
+ }
+
+ wl_list_insert(master->devices_list.prev, &device->link);
+
+ return 0;
+}
+
+int
+udev_seat_add_devices(struct udev_seat *seat, struct udev *udev)
+{
+ struct udev_enumerate *e;
+ struct udev_list_entry *entry;
+ struct udev_device *device;
+ const char *path, *sysname;
+
+ e = udev_enumerate_new(udev);
+ udev_enumerate_add_match_subsystem(e, "input");
+ udev_enumerate_scan_devices(e);
+ udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
+ path = udev_list_entry_get_name(entry);
+ device = udev_device_new_from_syspath(udev, path);
+
+ sysname = udev_device_get_sysname(device);
+ if (strncmp("event", sysname, 5) != 0) {
+ udev_device_unref(device);
+ continue;
+ }
+
+ if (device_added(device, seat) < 0) {
+ udev_device_unref(device);
+ udev_enumerate_unref(e);
+ return -1;
+ }
+
+ udev_device_unref(device);
+ }
+ udev_enumerate_unref(e);
+
+ evdev_notify_keyboard_focus(&seat->base, &seat->devices_list);
+
+ if (wl_list_empty(&seat->devices_list)) {
+ weston_log(
+ "warning: no input devices on entering Weston. "
+ "Possible causes:\n"
+ "\t- no permissions to read /dev/input/event*\n"
+ "\t- seats misconfigured "
+ "(Weston backend option 'seat', "
+ "udev device property ID_SEAT)\n");
+ }
+
+ return 0;
+}
+
+static int
+evdev_udev_handler(int fd, uint32_t mask, void *data)
+{
+ struct udev_seat *seat = data;
+ struct udev_device *udev_device;
+ struct evdev_device *device, *next;
+ const char *action;
+ const char *devnode;
+
+ udev_device = udev_monitor_receive_device(seat->udev_monitor);
+ if (!udev_device)
+ return 1;
+
+ action = udev_device_get_action(udev_device);
+ if (!action)
+ goto out;
+
+ if (strncmp("event", udev_device_get_sysname(udev_device), 5) != 0)
+ goto out;
+
+ if (!strcmp(action, "add")) {
+ device_added(udev_device, seat);
+ }
+ else if (!strcmp(action, "remove")) {
+ devnode = udev_device_get_devnode(udev_device);
+ wl_list_for_each_safe(device, next, &seat->devices_list, link)
+ if (!strcmp(device->devnode, devnode)) {
+ weston_log("input device %s, %s removed\n",
+ device->devname, device->devnode);
+ evdev_device_destroy(device);
+ break;
+ }
+ }
+
+out:
+ udev_device_unref(udev_device);
+
+ return 0;
+}
+
+int
+udev_seat_enable_udev_monitor(struct udev_seat *seat, struct udev *udev)
+{
+ struct wl_event_loop *loop;
+ struct weston_compositor *c = seat->base.compositor;
+ int fd;
+
+ seat->udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
+ if (!seat->udev_monitor) {
+ weston_log("udev: failed to create the udev monitor\n");
+ return 0;
+ }
+
+ udev_monitor_filter_add_match_subsystem_devtype(seat->udev_monitor,
+ "input", NULL);
+
+ if (udev_monitor_enable_receiving(seat->udev_monitor)) {
+ weston_log("udev: failed to bind the udev monitor\n");
+ udev_monitor_unref(seat->udev_monitor);
+ return 0;
+ }
+
+ loop = wl_display_get_event_loop(c->wl_display);
+ fd = udev_monitor_get_fd(seat->udev_monitor);
+ seat->udev_monitor_source =
+ wl_event_loop_add_fd(loop, fd, WL_EVENT_READABLE,
+ evdev_udev_handler, seat);
+ if (!seat->udev_monitor_source) {
+ udev_monitor_unref(seat->udev_monitor);
+ return 0;
+ }
+
+ return 1;
+}
+
+void
+udev_seat_disable_udev_monitor(struct udev_seat *seat)
+{
+ if (!seat->udev_monitor)
+ return;
+
+ udev_monitor_unref(seat->udev_monitor);
+ seat->udev_monitor = NULL;
+ wl_event_source_remove(seat->udev_monitor_source);
+ seat->udev_monitor_source = NULL;
+}
+
+static void
+drm_led_update(struct weston_seat *seat_base, enum weston_led leds)
+{
+ struct udev_seat *seat = (struct udev_seat *) seat_base;
+ struct evdev_device *device;
+
+ wl_list_for_each(device, &seat->devices_list, link)
+ evdev_led_update(device, leds);
+}
+
+struct udev_seat *
+udev_seat_create(struct weston_compositor *c, struct udev *udev,
+ const char *seat_id)
+{
+ struct udev_seat *seat;
+
+ seat = malloc(sizeof *seat);
+ if (seat == NULL)
+ return NULL;
+
+ memset(seat, 0, sizeof *seat);
+ weston_seat_init(&seat->base, c);
+ seat->base.led_update = drm_led_update;
+
+ wl_list_init(&seat->devices_list);
+ seat->seat_id = strdup(seat_id);
+ if (!udev_seat_enable_udev_monitor(seat, udev))
+ goto err;
+ if (udev_seat_add_devices(seat, udev) < 0)
+ goto err;
+
+ return seat;
+
+ err:
+ free(seat->seat_id);
+ free(seat);
+ return NULL;
+}
+
+void
+udev_seat_remove_devices(struct udev_seat *seat)
+{
+ struct evdev_device *device, *next;
+
+ wl_list_for_each_safe(device, next, &seat->devices_list, link)
+ evdev_device_destroy(device);
+
+ if (seat->base.seat.keyboard)
+ notify_keyboard_focus_out(&seat->base);
+}
+
+void
+udev_seat_destroy(struct udev_seat *seat)
+{
+ udev_seat_remove_devices(seat);
+ udev_seat_disable_udev_monitor(seat);
+
+ weston_seat_release(&seat->base);
+ free(seat->seat_id);
+ free(seat);
+}
--- /dev/null
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission. The copyright holders make
+ * no representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _UDEV_SEAT_H_
+#define _UDEV_SEAT_H_
+
+#include <libudev.h>
+
+#include "compositor.h"
+
+struct udev_seat {
+ struct weston_seat base;
+ struct wl_list devices_list;
+ struct udev_monitor *udev_monitor;
+ struct wl_event_source *udev_monitor_source;
+ char *seat_id;
+};
+
+int udev_seat_add_devices(struct udev_seat *seat, struct udev *udev);
+int udev_seat_enable_udev_monitor(struct udev_seat *seat, struct udev *udev);
+void udev_seat_disable_udev_monitor(struct udev_seat *seat);
+struct udev_seat *udev_seat_create(struct weston_compositor *c,
+ struct udev *udev,
+ const char *seat_id);
+void udev_seat_remove_devices(struct udev_seat *seat);
+void udev_seat_destroy(struct udev_seat *seat);
+
+#endif