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#include <wlr/util/log.h>
#include <stdlib.h>
#include "backend/drm/monitor.h"
#include "backend/multi.h"
#include "backend/session/session.h"
static void drm_backend_monitor_destroy(struct wlr_drm_backend_monitor* monitor) {
wl_list_remove(&monitor->session_add_drm_card.link);
wl_list_remove(&monitor->session_destroy.link);
wl_list_remove(&monitor->primary_drm_destroy.link);
wl_list_remove(&monitor->multi_destroy.link);
free(monitor);
}
static void handle_add_drm_card(struct wl_listener *listener, void *data) {
struct wlr_session_add_event *event = data;
struct wlr_drm_backend_monitor *backend_monitor =
wl_container_of(listener, backend_monitor, session_add_drm_card);
struct wlr_device *dev =
session_open_if_kms(backend_monitor->session, event->path);
if (!dev) {
wlr_log(WLR_ERROR, "Unable to open %s as DRM device", event->path);
return;
}
wlr_log(WLR_DEBUG, "Creating DRM backend for %s after hotplug", event->path);
struct wlr_backend *child_drm = wlr_drm_backend_create(backend_monitor->session,
dev, backend_monitor->primary_drm);
if (!child_drm) {
wlr_log(WLR_ERROR, "Failed to create DRM backend after hotplug");
return;
}
if (!wlr_multi_backend_add(backend_monitor->multi, child_drm)) {
wlr_log(WLR_ERROR, "Failed to add new drm backend to multi backend");
wlr_backend_destroy(child_drm);
return;
}
if (!wlr_backend_start(child_drm)) {
wlr_log(WLR_ERROR, "Failed to start new child DRM backend");
wlr_backend_destroy(child_drm);
}
}
static void handle_session_destroy(struct wl_listener *listener, void *data) {
struct wlr_drm_backend_monitor *backend_monitor =
wl_container_of(listener, backend_monitor, session_destroy);
drm_backend_monitor_destroy(backend_monitor);
}
static void handle_primary_drm_destroy(struct wl_listener *listener, void *data) {
struct wlr_drm_backend_monitor *backend_monitor =
wl_container_of(listener, backend_monitor, primary_drm_destroy);
drm_backend_monitor_destroy(backend_monitor);
}
static void handle_multi_destroy(struct wl_listener *listener, void *data) {
struct wlr_drm_backend_monitor *backend_monitor =
wl_container_of(listener, backend_monitor, multi_destroy);
drm_backend_monitor_destroy(backend_monitor);
}
struct wlr_drm_backend_monitor *drm_backend_monitor_create(
struct wlr_backend *multi, struct wlr_backend *primary_drm,
struct wlr_session *session) {
struct wlr_drm_backend_monitor *monitor = calloc(1, sizeof(*monitor));
if (!monitor) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
return NULL;
}
monitor->multi = multi;
monitor->primary_drm = primary_drm;
monitor->session = session;
monitor->session_add_drm_card.notify = handle_add_drm_card;
wl_signal_add(&session->events.add_drm_card, &monitor->session_add_drm_card);
monitor->session_destroy.notify = handle_session_destroy;
wl_signal_add(&session->events.destroy, &monitor->session_destroy);
monitor->primary_drm_destroy.notify = handle_primary_drm_destroy;
wl_signal_add(&primary_drm->events.destroy, &monitor->primary_drm_destroy);
monitor->multi_destroy.notify = handle_multi_destroy;
wl_signal_add(&multi->events.destroy, &monitor->multi_destroy);
return monitor;
}
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