aboutsummaryrefslogtreecommitdiff
path: root/backend/drm/legacy.c
blob: 43436165938da2c68e00c10f61454661a90a1fc4 (plain)
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
#include <assert.h>
#include <gbm.h>
#include <stdlib.h>
#include <wlr/util/log.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include "backend/drm/drm.h"
#include "backend/drm/iface.h"
#include "backend/drm/util.h"

static bool legacy_crtc_commit(struct wlr_drm_backend *drm,
		struct wlr_drm_connector *conn, const struct wlr_output_state *state,
		uint32_t flags) {
	struct wlr_output *output = &conn->output;
	struct wlr_drm_crtc *crtc = conn->crtc;
	struct wlr_drm_plane *cursor = crtc->cursor;

	bool active = drm_connector_state_active(conn, state);

	uint32_t fb_id = 0;
	if (active) {
		struct wlr_drm_fb *fb = plane_get_next_fb(crtc->primary);
		if (fb == NULL) {
			wlr_log(WLR_ERROR, "%s: failed to acquire primary FB",
				conn->output.name);
			return false;
		}
		fb_id = fb->id;
	}

	if (drm_connector_state_is_modeset(state)) {
		uint32_t *conns = NULL;
		size_t conns_len = 0;
		drmModeModeInfo *mode = NULL;
		drmModeModeInfo mode_info = {0};
		if (active) {
			conns = &conn->id;
			conns_len = 1;
			drm_connector_state_mode(conn, state, &mode_info);
			mode = &mode_info;
		}

		uint32_t dpms = active ? DRM_MODE_DPMS_ON : DRM_MODE_DPMS_OFF;
		if (drmModeConnectorSetProperty(drm->fd, conn->id, conn->props.dpms,
				dpms) != 0) {
			wlr_drm_conn_log_errno(conn, WLR_ERROR,
				"Failed to set DPMS property");
			return false;
		}

		if (drmModeSetCrtc(drm->fd, crtc->id, fb_id, 0, 0,
				conns, conns_len, mode)) {
			wlr_drm_conn_log_errno(conn, WLR_ERROR, "Failed to set CRTC");
			return false;
		}
	}

	if (state->committed & WLR_OUTPUT_STATE_GAMMA_LUT) {
		if (!drm_legacy_crtc_set_gamma(drm, crtc,
				state->gamma_lut_size, state->gamma_lut)) {
			return false;
		}
	}

	if ((state->committed & WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED) &&
			drm_connector_supports_vrr(conn)) {
		if (drmModeObjectSetProperty(drm->fd, crtc->id, DRM_MODE_OBJECT_CRTC,
				crtc->props.vrr_enabled,
				state->adaptive_sync_enabled) != 0) {
			wlr_drm_conn_log_errno(conn, WLR_ERROR,
				"drmModeObjectSetProperty(VRR_ENABLED) failed");
			return false;
		}
		output->adaptive_sync_status = state->adaptive_sync_enabled ?
			WLR_OUTPUT_ADAPTIVE_SYNC_ENABLED :
			WLR_OUTPUT_ADAPTIVE_SYNC_DISABLED;
		wlr_drm_conn_log(conn, WLR_DEBUG, "VRR %s",
			state->adaptive_sync_enabled ? "enabled" : "disabled");
	}

	if (cursor != NULL && drm_connector_is_cursor_visible(conn)) {
		struct wlr_drm_fb *cursor_fb = plane_get_next_fb(cursor);
		if (cursor_fb == NULL) {
			wlr_drm_conn_log(conn, WLR_DEBUG, "Failed to acquire cursor FB");
			return false;
		}

		uint32_t cursor_handle = gbm_bo_get_handle(cursor_fb->bo).u32;
		uint32_t cursor_width = gbm_bo_get_width(cursor_fb->bo);
		uint32_t cursor_height = gbm_bo_get_height(cursor_fb->bo);
		if (drmModeSetCursor(drm->fd, crtc->id, cursor_handle,
				cursor_width, cursor_height)) {
			wlr_drm_conn_log_errno(conn, WLR_DEBUG, "drmModeSetCursor failed");
			return false;
		}

		if (drmModeMoveCursor(drm->fd,
			crtc->id, conn->cursor_x, conn->cursor_y) != 0) {
			wlr_drm_conn_log_errno(conn, WLR_ERROR, "drmModeMoveCursor failed");
			return false;
		}
	} else {
		if (drmModeSetCursor(drm->fd, crtc->id, 0, 0, 0)) {
			wlr_drm_conn_log_errno(conn, WLR_DEBUG, "drmModeSetCursor failed");
			return false;
		}
	}

	if (flags & DRM_MODE_PAGE_FLIP_EVENT) {
		if (drmModePageFlip(drm->fd, crtc->id, fb_id,
				DRM_MODE_PAGE_FLIP_EVENT, drm)) {
			wlr_drm_conn_log_errno(conn, WLR_ERROR, "drmModePageFlip failed");
			return false;
		}
	}

	return true;
}

static void fill_empty_gamma_table(size_t size,
		uint16_t *r, uint16_t *g, uint16_t *b) {
	assert(0xFFFF < UINT64_MAX / (size - 1));
	for (uint32_t i = 0; i < size; ++i) {
		uint16_t val = (uint64_t)0xFFFF * i / (size - 1);
		r[i] = g[i] = b[i] = val;
	}
}

bool drm_legacy_crtc_set_gamma(struct wlr_drm_backend *drm,
		struct wlr_drm_crtc *crtc, size_t size, uint16_t *lut) {
	uint16_t *linear_lut = NULL;
	if (size == 0) {
		// The legacy interface doesn't offer a way to reset the gamma LUT
		size = drm_crtc_get_gamma_lut_size(drm, crtc);
		if (size == 0) {
			return false;
		}

		linear_lut = malloc(3 * size * sizeof(uint16_t));
		if (linear_lut == NULL) {
			wlr_log_errno(WLR_ERROR, "Allocation failed");
			return false;
		}
		fill_empty_gamma_table(size, linear_lut, linear_lut + size,
			linear_lut + 2 * size);

		lut = linear_lut;
	}

	uint16_t *r = lut, *g = lut + size, *b = lut + 2 * size;
	if (drmModeCrtcSetGamma(drm->fd, crtc->id, size, r, g, b) != 0) {
		wlr_log_errno(WLR_ERROR, "Failed to set gamma LUT on CRTC %"PRIu32,
			crtc->id);
		return false;
	}

	free(linear_lut);
	return true;
}

const struct wlr_drm_interface legacy_iface = {
	.crtc_commit = legacy_crtc_commit,
};