[WIP][DONTMERGE]Add support for libinput_switch input devices

These are used primarily by laptops to signal
the state of the lid (open/closed) and tablet
mode if supported, based on ACPI events.

1 files changed, 55 insertions, 0 deletions

diff --git a/backend/libinput/switch.c b/backend/libinput/switch.c
new file mode 100644
index 00000000..393460b0
--- /dev/null
+++ b/backend/libinput/switch.c
@@ -0,0 +1,55 @@
+#include <assert.h>
+#include <libinput.h>
+#include <stdlib.h>
+#include <wlr/backend/session.h>
+#include <wlr/interfaces/wlr_switch.h>
+#include <wlr/types/wlr_input_device.h>
+#include <wlr/util/log.h>
+#include "backend/libinput.h"
+#include "util/signal.h"
+
+struct wlr_switch *create_libinput_switch(
+		struct libinput_device *libinput_dev) {
+	assert(libinput_dev);
+	struct wlr_switch *wlr_switch = calloc(1, sizeof(struct wlr_switch));
+	if (!wlr_switch) {
+		wlr_log(WLR_ERROR, "Unable to allocate wlr_switch");
+		return NULL;
+	}
+	wlr_switch_init(wlr_switch, NULL);
+	wlr_log(WLR_DEBUG, "Created switch for device %s", libinput_device_get_name(libinput_dev));
+	return wlr_switch;
+}
+
+void handle_switch_toggle(struct libinput_event *event,
+		struct libinput_device *libinput_dev) {
+	struct wlr_input_device *wlr_dev =
+		get_appropriate_device(WLR_INPUT_DEVICE_SWITCH, libinput_dev);
+	if (!wlr_dev) {
+		wlr_log(WLR_DEBUG, "Got a switch event for a device with no switch?");
+		return;
+	}
+	struct libinput_event_switch *sevent = 
+		libinput_event_get_switch_event	(event);
+	struct wlr_event_switch_toggle wlr_event = { 0 };
+	wlr_event.device = wlr_dev;
+	switch (libinput_event_switch_get_switch(sevent)) {
+	case LIBINPUT_SWITCH_LID:
+		wlr_event.switch_type = WLR_SWITCH_TYPE_LID;
+		break;
+	case LIBINPUT_SWITCH_TABLET_MODE:
+		wlr_event.switch_type = WLR_SWITCH_TYPE_TABLET_MODE;
+		break;
+	}
+	switch (libinput_event_switch_get_switch_state(sevent)) {
+	case LIBINPUT_SWITCH_STATE_OFF:
+		wlr_event.switch_state = WLR_SWITCH_STATE_OFF;
+		break;
+	case LIBINPUT_SWITCH_STATE_ON:
+		wlr_event.switch_state = WLR_SWITCH_STATE_ON;
+		break;
+	}
+	wlr_event.time_msec =
+		usec_to_msec(libinput_event_switch_get_time_usec(sevent));
+	wlr_signal_emit_safe(&wlr_dev->lid_switch->events.toggle, &wlr_event);
+}