wlroots/backend/drm/backend.c
2017-05-03 17:49:03 +12:00

113 lines
2.6 KiB
C

#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <wlr/session.h>
#include <wlr/common/list.h>
#include "backend/drm/backend.h"
#include "backend/drm/drm.h"
#include "backend/drm/udev.h"
#include "common/log.h"
struct wlr_drm_backend *wlr_drm_backend_init(struct wlr_session *session,
struct wl_listener *add, struct wl_listener *rem, struct wl_listener *render)
{
struct wlr_drm_backend *backend = calloc(1, sizeof *backend);
if (!backend) {
wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
return NULL;
}
backend->session = session;
backend->outputs = list_create();
if (!backend->outputs) {
wlr_log(L_ERROR, "Failed to allocate list");
goto error_backend;
}
backend->event_loop = wl_event_loop_create();
if (!backend->event_loop) {
wlr_log(L_ERROR, "Failed to create event loop");
goto error_list;
}
if (!wlr_udev_init(backend)) {
wlr_log(L_ERROR, "Failed to start udev");
goto error_loop;
}
backend->fd = wlr_udev_find_gpu(&backend->udev, backend->session);
if (backend->fd == -1) {
wlr_log(L_ERROR, "Failed to open DRM device");
goto error_udev;
}
if (!wlr_drm_renderer_init(&backend->renderer, backend, backend->fd)) {
wlr_log(L_ERROR, "Failed to initialize renderer");
goto error_fd;
}
wl_signal_init(&backend->signals.output_add);
wl_signal_init(&backend->signals.output_rem);
wl_signal_init(&backend->signals.output_render);
if (add)
wl_signal_add(&backend->signals.output_add, add);
if (rem)
wl_signal_add(&backend->signals.output_rem, rem);
if (render)
wl_signal_add(&backend->signals.output_render, render);
wlr_drm_scan_connectors(backend);
return backend;
error_fd:
wlr_session_close_file(backend->session, backend->fd);
error_udev:
wlr_udev_free(&backend->udev);
error_loop:
wl_event_loop_destroy(backend->event_loop);
error_list:
list_free(backend->outputs);
error_backend:
free(backend);
return NULL;
}
static void free_output(void *item)
{
struct wlr_drm_output *out = item;
wlr_drm_output_free(out, true);
free(out);
}
void wlr_drm_backend_free(struct wlr_drm_backend *backend)
{
if (!backend)
return;
list_foreach(backend->outputs, free_output);
wlr_drm_renderer_free(&backend->renderer);
wlr_udev_free(&backend->udev);
wlr_session_close_file(backend->session, backend->fd);
wlr_session_finish(backend->session);
wl_event_source_remove(backend->event_src.drm);
wl_event_source_remove(backend->event_src.udev);
wl_event_loop_destroy(backend->event_loop);
list_free(backend->outputs);
free(backend);
}
struct wl_event_loop *wlr_drm_backend_get_event_loop(struct wlr_drm_backend *backend)
{
return backend->event_loop;
}