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1// SPDX-License-Identifier: GPL-2.0+
2
3#include "vkms_drv.h"
4#include <drm/drm_atomic_helper.h>
5#include <drm/drm_edid.h>
6#include <drm/drm_probe_helper.h>
7
8static const struct drm_connector_funcs vkms_connector_funcs = {
9 .fill_modes = drm_helper_probe_single_connector_modes,
10 .destroy = drm_connector_cleanup,
11 .reset = drm_atomic_helper_connector_reset,
12 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
13 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
14};
15
16static const struct drm_encoder_funcs vkms_encoder_funcs = {
17 .destroy = drm_encoder_cleanup,
18};
19
20static int vkms_conn_get_modes(struct drm_connector *connector)
21{
22 int count;
23
24 /* Use the default modes list from DRM */
25 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
26 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
27
28 return count;
29}
30
31static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = {
32 .get_modes = vkms_conn_get_modes,
33};
34
35static int vkms_add_overlay_plane(struct vkms_device *vkmsdev, int index,
36 struct drm_crtc *crtc)
37{
38 struct vkms_plane *overlay;
39
40 overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY, index);
41 if (IS_ERR(overlay))
42 return PTR_ERR(overlay);
43
44 if (!overlay->base.possible_crtcs)
45 overlay->base.possible_crtcs = drm_crtc_mask(crtc);
46
47 return 0;
48}
49
50int vkms_output_init(struct vkms_device *vkmsdev, int index)
51{
52 struct vkms_output *output = &vkmsdev->output;
53 struct drm_device *dev = &vkmsdev->drm;
54 struct drm_connector *connector = &output->connector;
55 struct drm_encoder *encoder = &output->encoder;
56 struct drm_crtc *crtc = &output->crtc;
57 struct vkms_plane *primary, *cursor = NULL;
58 int ret;
59 int writeback;
60 unsigned int n;
61
62 /*
63 * Initialize used plane. One primary plane is required to perform the composition.
64 *
65 * The overlay and cursor planes are not mandatory, but can be used to perform complex
66 * composition.
67 */
68 primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index);
69 if (IS_ERR(primary))
70 return PTR_ERR(primary);
71
72 if (vkmsdev->config->overlay) {
73 for (n = 0; n < NUM_OVERLAY_PLANES; n++) {
74 ret = vkms_add_overlay_plane(vkmsdev, index, crtc);
75 if (ret)
76 return ret;
77 }
78 }
79
80 if (vkmsdev->config->cursor) {
81 cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index);
82 if (IS_ERR(cursor))
83 return PTR_ERR(cursor);
84 }
85
86 /* [1]: Allocation of a CRTC, its index will be BIT(0) = 1 */
87 ret = vkms_crtc_init(dev, crtc, &primary->base, &cursor->base);
88 if (ret)
89 return ret;
90
91 ret = drm_connector_init(dev, connector, &vkms_connector_funcs,
92 DRM_MODE_CONNECTOR_VIRTUAL);
93 if (ret) {
94 DRM_ERROR("Failed to init connector\n");
95 return ret;
96 }
97
98 drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
99
100 ret = drm_encoder_init(dev, encoder, &vkms_encoder_funcs,
101 DRM_MODE_ENCODER_VIRTUAL, NULL);
102 if (ret) {
103 DRM_ERROR("Failed to init encoder\n");
104 goto err_encoder;
105 }
106 /*
107 * This is a hardcoded value to select crtc for the encoder.
108 * BIT(0) here designate the first registered CRTC, the one allocated in [1]
109 */
110 encoder->possible_crtcs = BIT(0);
111
112 ret = drm_connector_attach_encoder(connector, encoder);
113 if (ret) {
114 DRM_ERROR("Failed to attach connector to encoder\n");
115 goto err_attach;
116 }
117
118 if (vkmsdev->config->writeback) {
119 writeback = vkms_enable_writeback_connector(vkmsdev);
120 if (writeback)
121 DRM_ERROR("Failed to init writeback connector\n");
122 }
123
124 drm_mode_config_reset(dev);
125
126 return 0;
127
128err_attach:
129 drm_encoder_cleanup(encoder);
130
131err_encoder:
132 drm_connector_cleanup(connector);
133
134 return ret;
135}
1// SPDX-License-Identifier: GPL-2.0+
2
3#include "vkms_drv.h"
4#include <drm/drm_atomic_helper.h>
5#include <drm/drm_probe_helper.h>
6
7static void vkms_connector_destroy(struct drm_connector *connector)
8{
9 drm_connector_cleanup(connector);
10}
11
12static const struct drm_connector_funcs vkms_connector_funcs = {
13 .fill_modes = drm_helper_probe_single_connector_modes,
14 .destroy = vkms_connector_destroy,
15 .reset = drm_atomic_helper_connector_reset,
16 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
17 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
18};
19
20static const struct drm_encoder_funcs vkms_encoder_funcs = {
21 .destroy = drm_encoder_cleanup,
22};
23
24static int vkms_conn_get_modes(struct drm_connector *connector)
25{
26 int count;
27
28 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
29 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
30
31 return count;
32}
33
34static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = {
35 .get_modes = vkms_conn_get_modes,
36};
37
38int vkms_output_init(struct vkms_device *vkmsdev, int index)
39{
40 struct vkms_output *output = &vkmsdev->output;
41 struct drm_device *dev = &vkmsdev->drm;
42 struct drm_connector *connector = &output->connector;
43 struct drm_encoder *encoder = &output->encoder;
44 struct drm_crtc *crtc = &output->crtc;
45 struct drm_plane *primary, *cursor = NULL;
46 int ret;
47
48 primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index);
49 if (IS_ERR(primary))
50 return PTR_ERR(primary);
51
52 if (enable_cursor) {
53 cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index);
54 if (IS_ERR(cursor)) {
55 ret = PTR_ERR(cursor);
56 goto err_cursor;
57 }
58 }
59
60 ret = vkms_crtc_init(dev, crtc, primary, cursor);
61 if (ret)
62 goto err_crtc;
63
64 ret = drm_connector_init(dev, connector, &vkms_connector_funcs,
65 DRM_MODE_CONNECTOR_VIRTUAL);
66 if (ret) {
67 DRM_ERROR("Failed to init connector\n");
68 goto err_connector;
69 }
70
71 drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
72
73 ret = drm_encoder_init(dev, encoder, &vkms_encoder_funcs,
74 DRM_MODE_ENCODER_VIRTUAL, NULL);
75 if (ret) {
76 DRM_ERROR("Failed to init encoder\n");
77 goto err_encoder;
78 }
79 encoder->possible_crtcs = 1;
80
81 ret = drm_connector_attach_encoder(connector, encoder);
82 if (ret) {
83 DRM_ERROR("Failed to attach connector to encoder\n");
84 goto err_attach;
85 }
86
87 drm_mode_config_reset(dev);
88
89 return 0;
90
91err_attach:
92 drm_encoder_cleanup(encoder);
93
94err_encoder:
95 drm_connector_cleanup(connector);
96
97err_connector:
98 drm_crtc_cleanup(crtc);
99
100err_crtc:
101 if (enable_cursor)
102 drm_plane_cleanup(cursor);
103
104err_cursor:
105 drm_plane_cleanup(primary);
106
107 return ret;
108}