Loading...
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_edid.h>
6#include <drm/drm_probe_helper.h>
7#include <drm/drm_simple_kms_helper.h>
8
9static void vkms_connector_destroy(struct drm_connector *connector)
10{
11 drm_connector_cleanup(connector);
12}
13
14static const struct drm_connector_funcs vkms_connector_funcs = {
15 .fill_modes = drm_helper_probe_single_connector_modes,
16 .destroy = vkms_connector_destroy,
17 .reset = drm_atomic_helper_connector_reset,
18 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
19 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
20};
21
22static int vkms_conn_get_modes(struct drm_connector *connector)
23{
24 int count;
25
26 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
27 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
28
29 return count;
30}
31
32static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = {
33 .get_modes = vkms_conn_get_modes,
34};
35
36static int vkms_add_overlay_plane(struct vkms_device *vkmsdev, int index,
37 struct drm_crtc *crtc)
38{
39 struct vkms_plane *overlay;
40
41 overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY, index);
42 if (IS_ERR(overlay))
43 return PTR_ERR(overlay);
44
45 if (!overlay->base.possible_crtcs)
46 overlay->base.possible_crtcs = drm_crtc_mask(crtc);
47
48 return 0;
49}
50
51int vkms_output_init(struct vkms_device *vkmsdev, int index)
52{
53 struct vkms_output *output = &vkmsdev->output;
54 struct drm_device *dev = &vkmsdev->drm;
55 struct drm_connector *connector = &output->connector;
56 struct drm_encoder *encoder = &output->encoder;
57 struct drm_crtc *crtc = &output->crtc;
58 struct vkms_plane *primary, *cursor = NULL;
59 int ret;
60 int writeback;
61 unsigned int n;
62
63 primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index);
64 if (IS_ERR(primary))
65 return PTR_ERR(primary);
66
67 if (vkmsdev->config->overlay) {
68 for (n = 0; n < NUM_OVERLAY_PLANES; n++) {
69 ret = vkms_add_overlay_plane(vkmsdev, index, crtc);
70 if (ret)
71 return ret;
72 }
73 }
74
75 if (vkmsdev->config->cursor) {
76 cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index);
77 if (IS_ERR(cursor))
78 return PTR_ERR(cursor);
79 }
80
81 ret = vkms_crtc_init(dev, crtc, &primary->base, &cursor->base);
82 if (ret)
83 return ret;
84
85 ret = drm_connector_init(dev, connector, &vkms_connector_funcs,
86 DRM_MODE_CONNECTOR_VIRTUAL);
87 if (ret) {
88 DRM_ERROR("Failed to init connector\n");
89 goto err_connector;
90 }
91
92 drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
93
94 ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_VIRTUAL);
95 if (ret) {
96 DRM_ERROR("Failed to init encoder\n");
97 goto err_encoder;
98 }
99 encoder->possible_crtcs = 1;
100
101 ret = drm_connector_attach_encoder(connector, encoder);
102 if (ret) {
103 DRM_ERROR("Failed to attach connector to encoder\n");
104 goto err_attach;
105 }
106
107 if (vkmsdev->config->writeback) {
108 writeback = vkms_enable_writeback_connector(vkmsdev);
109 if (writeback)
110 DRM_ERROR("Failed to init writeback connector\n");
111 }
112
113 drm_mode_config_reset(dev);
114
115 return 0;
116
117err_attach:
118 drm_encoder_cleanup(encoder);
119
120err_encoder:
121 drm_connector_cleanup(connector);
122
123err_connector:
124 drm_crtc_cleanup(crtc);
125
126 return ret;
127}