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