1 /*
2 * Copyright © 2014 NVIDIA Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #include <errno.h>
25 #include <string.h>
26
27 #include "libkms-test.h"
28
kms_plane_probe(struct kms_plane * plane)29 static int kms_plane_probe(struct kms_plane *plane)
30 {
31 struct kms_device *device = plane->device;
32 drmModeObjectPropertiesPtr props;
33 drmModePlane *p;
34 unsigned int i;
35
36 p = drmModeGetPlane(device->fd, plane->id);
37 if (!p)
38 return -ENODEV;
39
40 /* TODO: allow dynamic assignment to CRTCs */
41 if (p->crtc_id == 0) {
42 for (i = 0; i < device->num_crtcs; i++) {
43 if (p->possible_crtcs & (1 << i)) {
44 p->crtc_id = device->crtcs[i]->id;
45 break;
46 }
47 }
48 }
49
50 for (i = 0; i < device->num_crtcs; i++) {
51 if (device->crtcs[i]->id == p->crtc_id) {
52 plane->crtc = device->crtcs[i];
53 break;
54 }
55 }
56
57 plane->formats = calloc(p->count_formats, sizeof(uint32_t));
58 if (!plane->formats) {
59 drmModeFreePlane(p);
60 return -ENOMEM;
61 }
62
63 for (i = 0; i < p->count_formats; i++)
64 plane->formats[i] = p->formats[i];
65
66 plane->num_formats = p->count_formats;
67
68 drmModeFreePlane(p);
69
70 props = drmModeObjectGetProperties(device->fd, plane->id,
71 DRM_MODE_OBJECT_PLANE);
72 if (!props)
73 return -ENODEV;
74
75 for (i = 0; i < props->count_props; i++) {
76 drmModePropertyPtr prop;
77
78 prop = drmModeGetProperty(device->fd, props->props[i]);
79 if (prop) {
80 if (strcmp(prop->name, "type") == 0)
81 plane->type = props->prop_values[i];
82
83 drmModeFreeProperty(prop);
84 }
85 }
86
87 drmModeFreeObjectProperties(props);
88
89 return 0;
90 }
91
kms_plane_create(struct kms_device * device,uint32_t id)92 struct kms_plane *kms_plane_create(struct kms_device *device, uint32_t id)
93 {
94 struct kms_plane *plane;
95
96 plane = calloc(1, sizeof(*plane));
97 if (!plane)
98 return NULL;
99
100 plane->device = device;
101 plane->id = id;
102
103 kms_plane_probe(plane);
104
105 return plane;
106 }
107
kms_plane_free(struct kms_plane * plane)108 void kms_plane_free(struct kms_plane *plane)
109 {
110 free(plane);
111 }
112
kms_plane_set(struct kms_plane * plane,struct kms_framebuffer * fb,unsigned int x,unsigned int y)113 int kms_plane_set(struct kms_plane *plane, struct kms_framebuffer *fb,
114 unsigned int x, unsigned int y)
115 {
116 struct kms_device *device = plane->device;
117 int err;
118
119 err = drmModeSetPlane(device->fd, plane->id, plane->crtc->id, fb->id,
120 0, x, y, fb->width, fb->height, 0 << 16,
121 0 << 16, fb->width << 16, fb->height << 16);
122 if (err < 0)
123 return -errno;
124
125 return 0;
126 }
127
kms_plane_supports_format(struct kms_plane * plane,uint32_t format)128 bool kms_plane_supports_format(struct kms_plane *plane, uint32_t format)
129 {
130 unsigned int i;
131
132 for (i = 0; i < plane->num_formats; i++)
133 if (plane->formats[i] == format)
134 return true;
135
136 return false;
137 }
138