summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/vkms/vkms_output.c
blob: 991857125bb47b64f77a9b5d48d313468de749bc (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
// SPDX-License-Identifier: GPL-2.0+

#include "vkms_drv.h"
#include <drm/drm_atomic_helper.h>
#include <drm/drm_edid.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_simple_kms_helper.h>

static void vkms_connector_destroy(struct drm_connector *connector)
{
	drm_connector_cleanup(connector);
}

static const struct drm_connector_funcs vkms_connector_funcs = {
	.fill_modes = drm_helper_probe_single_connector_modes,
	.destroy = vkms_connector_destroy,
	.reset = drm_atomic_helper_connector_reset,
	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};

static int vkms_conn_get_modes(struct drm_connector *connector)
{
	int count;

	count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
	drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);

	return count;
}

static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = {
	.get_modes    = vkms_conn_get_modes,
};

static int vkms_add_overlay_plane(struct vkms_device *vkmsdev, int index,
				  struct drm_crtc *crtc)
{
	struct vkms_plane *overlay;

	overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY, index);
	if (IS_ERR(overlay))
		return PTR_ERR(overlay);

	if (!overlay->base.possible_crtcs)
		overlay->base.possible_crtcs = drm_crtc_mask(crtc);

	return 0;
}

int vkms_output_init(struct vkms_device *vkmsdev, int index)
{
	struct vkms_output *output = &vkmsdev->output;
	struct drm_device *dev = &vkmsdev->drm;
	struct drm_connector *connector = &output->connector;
	struct drm_encoder *encoder = &output->encoder;
	struct drm_crtc *crtc = &output->crtc;
	struct vkms_plane *primary, *cursor = NULL;
	int ret;
	int writeback;
	unsigned int n;

	primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index);
	if (IS_ERR(primary))
		return PTR_ERR(primary);

	if (vkmsdev->config->overlay) {
		for (n = 0; n < NUM_OVERLAY_PLANES; n++) {
			ret = vkms_add_overlay_plane(vkmsdev, index, crtc);
			if (ret)
				return ret;
		}
	}

	if (vkmsdev->config->cursor) {
		cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index);
		if (IS_ERR(cursor))
			return PTR_ERR(cursor);
	}

	ret = vkms_crtc_init(dev, crtc, &primary->base, &cursor->base);
	if (ret)
		return ret;

	ret = drm_connector_init(dev, connector, &vkms_connector_funcs,
				 DRM_MODE_CONNECTOR_VIRTUAL);
	if (ret) {
		DRM_ERROR("Failed to init connector\n");
		goto err_connector;
	}

	drm_connector_helper_add(connector, &vkms_conn_helper_funcs);

	ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_VIRTUAL);
	if (ret) {
		DRM_ERROR("Failed to init encoder\n");
		goto err_encoder;
	}
	encoder->possible_crtcs = 1;

	ret = drm_connector_attach_encoder(connector, encoder);
	if (ret) {
		DRM_ERROR("Failed to attach connector to encoder\n");
		goto err_attach;
	}

	if (vkmsdev->config->writeback) {
		writeback = vkms_enable_writeback_connector(vkmsdev);
		if (writeback)
			DRM_ERROR("Failed to init writeback connector\n");
	}

	drm_mode_config_reset(dev);

	return 0;

err_attach:
	drm_encoder_cleanup(encoder);

err_encoder:
	drm_connector_cleanup(connector);

err_connector:
	drm_crtc_cleanup(crtc);

	return ret;
}