1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <wayland-server.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 wl_display *display,
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;
}
if (!wlr_udev_init(display, &backend->udev)) {
wlr_log(L_ERROR, "Failed to start udev");
goto error_list;
}
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;
}
struct wl_event_loop *event_loop = wl_display_get_event_loop(display);
backend->drm_event = wl_event_loop_add_fd(event_loop, backend->fd,
WL_EVENT_READABLE, wlr_drm_event, NULL);
if (!backend->drm_event) {
wlr_log(L_ERROR, "Failed to create DRM event source");
goto error_fd;
}
if (!wlr_drm_renderer_init(&backend->renderer, backend->fd)) {
wlr_log(L_ERROR, "Failed to initialize renderer");
goto error_event;
}
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_event:
wl_event_source_remove(backend->drm_event);
error_fd:
wlr_session_close_file(backend->session, backend->fd);
error_udev:
wlr_udev_free(&backend->udev);
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_cleanup(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->drm_event);
list_free(backend->outputs);
free(backend);
}
|
