119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <wlr/common/list.h>
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#include "backend/drm/backend.h"
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#include "backend/drm/drm.h"
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#include "backend/drm/session.h"
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#include "backend/drm/udev.h"
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#include "common/log.h"
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struct wlr_drm_backend *wlr_drm_backend_init(struct wl_listener *add,
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struct wl_listener *rem,
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struct wl_listener *render)
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{
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struct wlr_drm_backend *backend = calloc(1, sizeof *backend);
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if (!backend) {
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wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
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return NULL;
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}
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backend->displays = list_create();
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if (!backend->displays) {
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wlr_log(L_ERROR, "Failed to allocate list");
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goto error_backend;
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}
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backend->event_loop = wl_event_loop_create();
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if (!backend->event_loop) {
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wlr_log(L_ERROR, "Failed to create event loop");
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goto error_list;
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}
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if (!wlr_session_start(&backend->session)) {
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wlr_log(L_ERROR, "Failed to start session");
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goto error_loop;
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}
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if (!wlr_udev_init(backend)) {
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wlr_log(L_ERROR, "Failed to start udev");
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goto error_session;
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}
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backend->fd = wlr_udev_find_gpu(&backend->udev, &backend->session);
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if (backend->fd == -1) {
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wlr_log(L_ERROR, "Failed to open DRM device");
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goto error_udev;
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}
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if (!wlr_drm_renderer_init(&backend->renderer, backend, backend->fd)) {
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wlr_log(L_ERROR, "Failed to initialize renderer");
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goto error_fd;
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}
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wl_signal_init(&backend->signals.display_add);
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wl_signal_init(&backend->signals.display_rem);
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wl_signal_init(&backend->signals.display_render);
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if (add)
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wl_signal_add(&backend->signals.display_add, add);
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if (rem)
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wl_signal_add(&backend->signals.display_rem, rem);
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if (render)
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wl_signal_add(&backend->signals.display_render, render);
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wlr_drm_scan_connectors(backend);
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return backend;
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error_fd:
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wlr_session_release_device(&backend->session, backend->fd);
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error_udev:
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wlr_udev_free(&backend->udev);
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error_session:
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wlr_session_end(&backend->session);
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error_loop:
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wl_event_loop_destroy(backend->event_loop);
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error_list:
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list_free(backend->displays);
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error_backend:
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free(backend);
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return NULL;
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}
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static void free_display(void *item)
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{
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struct wlr_drm_display *disp = item;
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wlr_drm_display_free(disp, true);
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free(disp);
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}
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void wlr_drm_backend_free(struct wlr_drm_backend *backend)
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{
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if (!backend)
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return;
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list_foreach(backend->displays, free_display);
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wlr_drm_renderer_free(&backend->renderer);
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wlr_udev_free(&backend->udev);
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wlr_session_release_device(&backend->session, backend->fd);
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wlr_session_end(&backend->session);
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wl_event_source_remove(backend->event_src.drm);
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wl_event_source_remove(backend->event_src.udev);
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wl_event_loop_destroy(backend->event_loop);
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list_free(backend->displays);
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free(backend);
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}
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struct wl_event_loop *wlr_drm_backend_get_event_loop(struct wlr_drm_backend *backend)
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{
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return backend->event_loop;
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}
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