include/backend/drm.h


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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164

#ifndef DRM_BACKEND_H
#define DRM_BACKEND_H

#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <wayland-server.h>
#include <xf86drmMode.h>
#include <EGL/egl.h>
#include <libudev.h>
#include <gbm.h>

#include <wlr/backend/session.h>
#include <wlr/backend/drm.h>
#include <wlr/util/list.h>

#include <backend/egl.h>
#include <backend/udev.h>
#include "drm-properties.h"

struct wlr_drm_plane {
	uint32_t type;
	uint32_t id;

	uint32_t possible_crtcs;

	uint32_t width, height;

	struct gbm_surface *gbm;
	EGLSurface egl;

	struct gbm_bo *front;
	struct gbm_bo *back;

	// Only used by cursor
	float matrix[16];
	struct wlr_renderer *wlr_rend;
	struct wlr_surface *wlr_surf;
	struct gbm_bo *cursor_bo;

	union wlr_drm_plane_props props;
};

struct wlr_drm_crtc {
	uint32_t id;
	union {
		struct {
			struct wlr_drm_plane *overlay;
			struct wlr_drm_plane *primary;
			struct wlr_drm_plane *cursor;
		};
		struct wlr_drm_plane *planes[3];
	};

	union wlr_drm_crtc_props props;

	struct wl_list connectors;
};

struct wlr_drm_connector {
	struct wlr_output *base;
	uint32_t id;
	struct wlr_drm_crtc *crtc;

	union wlr_drm_connector_props props;

	struct wl_list link;
};

struct wlr_drm_renderer {
	int fd;
	struct gbm_device *gbm;
	struct wlr_egl egl;
};

bool wlr_drm_renderer_init(struct wlr_drm_renderer *renderer, int fd);
void wlr_drm_renderer_free(struct wlr_drm_renderer *renderer);

struct wlr_backend_state {
	struct wlr_backend *base;

	int fd;
	dev_t dev;

	size_t num_crtcs;
	struct wlr_drm_crtc *crtcs;
	size_t num_planes;
	struct wlr_drm_plane *planes;

	union {
		struct {
			size_t num_overlay_planes;
			size_t num_primary_planes;
			size_t num_cursor_planes;
		};
		size_t num_type_planes[3];
	};

	union {
		struct {
			struct wlr_drm_plane *overlay_planes;
			struct wlr_drm_plane *primary_planes;
			struct wlr_drm_plane *cursor_planes;
		};
		struct wlr_drm_plane *type_planes[3];
	};

	struct wl_display *display;
	struct wl_event_source *drm_event;

	struct wl_listener session_signal;
	struct wl_listener drm_invalidated;

	uint32_t taken_crtcs;
	list_t *outputs;

	struct wlr_drm_renderer renderer;
	struct wlr_session *session;
	struct wlr_udev *udev;
};

enum wlr_drm_output_state {
	WLR_DRM_OUTPUT_DISCONNECTED,
	WLR_DRM_OUTPUT_NEEDS_MODESET,
	WLR_DRM_OUTPUT_CONNECTED,
};

struct wlr_output_mode_state {
	struct wlr_wl_output_mode *wlr_mode;
	drmModeModeInfo mode;
};

struct wlr_output_state {
	struct wlr_output *base;
	enum wlr_drm_output_state state;
	uint32_t connector;

	struct wlr_drm_crtc *crtc;
	uint32_t possible_crtc;

	union wlr_drm_connector_props props;

	uint32_t width;
	uint32_t height;

	drmModeCrtc *old_crtc;

	struct wlr_drm_renderer *renderer;

	bool pageflip_pending;
};

bool wlr_drm_check_features(struct wlr_backend_state *drm);
bool wlr_drm_resources_init(struct wlr_backend_state *drm);
void wlr_drm_resources_free(struct wlr_backend_state *drm);
void wlr_drm_output_cleanup(struct wlr_output_state *output, bool restore);

void wlr_drm_scan_connectors(struct wlr_backend_state *state);
int wlr_drm_event(int fd, uint32_t mask, void *data);

void wlr_drm_output_start_renderer(struct wlr_output_state *output);
bool wlr_drm_crtc_set_cursor(struct wlr_backend_state *drm, struct wlr_drm_crtc *crtc);

#endif