1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2 of the License, or
6 * (at your option) any later version.
7 */
8
9 #include "vkms_drv.h"
10 #include <drm/drm_crtc_helper.h>
11 #include <drm/drm_atomic_helper.h>
12
vkms_connector_destroy(struct drm_connector * connector)13 static void vkms_connector_destroy(struct drm_connector *connector)
14 {
15 drm_connector_unregister(connector);
16 drm_connector_cleanup(connector);
17 }
18
19 static const struct drm_connector_funcs vkms_connector_funcs = {
20 .fill_modes = drm_helper_probe_single_connector_modes,
21 .destroy = vkms_connector_destroy,
22 .reset = drm_atomic_helper_connector_reset,
23 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
24 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
25 };
26
27 static const struct drm_encoder_funcs vkms_encoder_funcs = {
28 .destroy = drm_encoder_cleanup,
29 };
30
vkms_conn_get_modes(struct drm_connector * connector)31 static int vkms_conn_get_modes(struct drm_connector *connector)
32 {
33 int count;
34
35 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
36 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
37
38 return count;
39 }
40
41 static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = {
42 .get_modes = vkms_conn_get_modes,
43 };
44
vkms_output_init(struct vkms_device * vkmsdev)45 int vkms_output_init(struct vkms_device *vkmsdev)
46 {
47 struct vkms_output *output = &vkmsdev->output;
48 struct drm_device *dev = &vkmsdev->drm;
49 struct drm_connector *connector = &output->connector;
50 struct drm_encoder *encoder = &output->encoder;
51 struct drm_crtc *crtc = &output->crtc;
52 struct drm_plane *primary;
53 int ret;
54
55 primary = vkms_plane_init(vkmsdev);
56 if (IS_ERR(primary))
57 return PTR_ERR(primary);
58
59 ret = vkms_crtc_init(dev, crtc, primary, NULL);
60 if (ret)
61 goto err_crtc;
62
63 ret = drm_connector_init(dev, connector, &vkms_connector_funcs,
64 DRM_MODE_CONNECTOR_VIRTUAL);
65 if (ret) {
66 DRM_ERROR("Failed to init connector\n");
67 goto err_connector;
68 }
69
70 drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
71
72 ret = drm_connector_register(connector);
73 if (ret) {
74 DRM_ERROR("Failed to register connector\n");
75 goto err_connector_register;
76 }
77
78 ret = drm_encoder_init(dev, encoder, &vkms_encoder_funcs,
79 DRM_MODE_ENCODER_VIRTUAL, NULL);
80 if (ret) {
81 DRM_ERROR("Failed to init encoder\n");
82 goto err_encoder;
83 }
84 encoder->possible_crtcs = 1;
85
86 ret = drm_connector_attach_encoder(connector, encoder);
87 if (ret) {
88 DRM_ERROR("Failed to attach connector to encoder\n");
89 goto err_attach;
90 }
91
92 drm_mode_config_reset(dev);
93
94 return 0;
95
96 err_attach:
97 drm_encoder_cleanup(encoder);
98
99 err_encoder:
100 drm_connector_unregister(connector);
101
102 err_connector_register:
103 drm_connector_cleanup(connector);
104
105 err_connector:
106 drm_crtc_cleanup(crtc);
107
108 err_crtc:
109 drm_plane_cleanup(primary);
110 return ret;
111 }
112
