1 /*
2 * Copyright 2008 Tungsten Graphics
3 * Jakob Bornecrantz <[email protected]>
4 * Copyright 2008 Intel Corporation
5 * Jesse Barnes <[email protected]>
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
23 * IN THE SOFTWARE.
24 */
25
26 /*
27 * This fairly simple test program dumps output in a similar format to the
28 * "xrandr" tool everyone knows & loves. It's necessarily slightly different
29 * since the kernel separates outputs into encoder and connector structures,
30 * each with their own unique ID. The program also allows test testing of the
31 * memory management and mode setting APIs by allowing the user to specify a
32 * connector and mode to use for mode setting. If all works as expected, a
33 * blue background should be painted on the monitor attached to the specified
34 * connector after the selected mode is set.
35 *
36 * TODO: use cairo to write the mode info on the selected output once
37 * the mode has been programmed, along with possible test patterns.
38 */
39
40 #include <errno.h>
41 #include <stdint.h>
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <fcntl.h>
46 #include <unistd.h>
47
48 #include "xf86drm.h"
49 #include "xf86drmMode.h"
50
51 #include "common.h"
52
53 struct type_name {
54 unsigned int type;
55 const char *name;
56 };
57
util_lookup_type_name(unsigned int type,const struct type_name * table,unsigned int count)58 static const char *util_lookup_type_name(unsigned int type,
59 const struct type_name *table,
60 unsigned int count)
61 {
62 unsigned int i;
63
64 for (i = 0; i < count; i++)
65 if (table[i].type == type)
66 return table[i].name;
67
68 return NULL;
69 }
70
71 static const struct type_name encoder_type_names[] = {
72 { DRM_MODE_ENCODER_NONE, "none" },
73 { DRM_MODE_ENCODER_DAC, "DAC" },
74 { DRM_MODE_ENCODER_TMDS, "TMDS" },
75 { DRM_MODE_ENCODER_LVDS, "LVDS" },
76 { DRM_MODE_ENCODER_TVDAC, "TVDAC" },
77 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
78 { DRM_MODE_ENCODER_DSI, "DSI" },
79 { DRM_MODE_ENCODER_DPMST, "DPMST" },
80 { DRM_MODE_ENCODER_DPI, "DPI" },
81 };
82
util_lookup_encoder_type_name(unsigned int type)83 const char *util_lookup_encoder_type_name(unsigned int type)
84 {
85 return util_lookup_type_name(type, encoder_type_names,
86 ARRAY_SIZE(encoder_type_names));
87 }
88
89 static const struct type_name connector_status_names[] = {
90 { DRM_MODE_CONNECTED, "connected" },
91 { DRM_MODE_DISCONNECTED, "disconnected" },
92 { DRM_MODE_UNKNOWNCONNECTION, "unknown" },
93 };
94
util_lookup_connector_status_name(unsigned int status)95 const char *util_lookup_connector_status_name(unsigned int status)
96 {
97 return util_lookup_type_name(status, connector_status_names,
98 ARRAY_SIZE(connector_status_names));
99 }
100
util_open(const char * device,const char * module)101 int util_open(const char *device, const char *module)
102 {
103 int fd = -1;
104 drmVersionPtr version;
105
106 if (module || device) {
107 fd = drmOpen(module, device);
108 if (fd < 0) {
109 fprintf(stderr, "failed to open device '%s' with busid '%s': %s\n",
110 module, device, strerror(errno));
111 return -errno;
112 }
113 } else {
114 unsigned int i;
115 drmDevicePtr devices[64];
116 int num_devices = drmGetDevices2(0, devices, ARRAY_SIZE(devices));
117 if (num_devices < 0) {
118 fprintf(stderr, "drmGetDevices2() failed with %s\n", strerror(num_devices));
119 return num_devices;
120 }
121
122 for (i = 0; i < num_devices; i++) {
123 drmDevicePtr device = devices[i];
124 // Select only primary nodes
125 if ((device->available_nodes & 1 << DRM_NODE_PRIMARY) == 0)
126 continue;
127
128 printf("trying to open device '%s'... ", device->nodes[DRM_NODE_PRIMARY]);
129 fd = open(device->nodes[DRM_NODE_PRIMARY], O_RDWR | O_CLOEXEC);
130
131 if (fd < 0) {
132 printf("failed\n");
133 } else if (!drmIsKMS(fd)) {
134 printf("is not a KMS device\n");
135 close(fd);
136 fd = -1;
137 } else {
138 printf("done\n");
139 break;
140 }
141 }
142
143 if (fd < 0) {
144 fprintf(stderr, "no device found\n");
145 return -ENODEV;
146 }
147 }
148
149 version = drmGetVersion(fd);
150 printf("opened device `%s` on driver `%s` (version %d.%d.%d at %s)\n",
151 version->desc,
152 version->name,
153 version->version_major,
154 version->version_minor,
155 version->version_patchlevel,
156 version->date);
157 drmFreeVersion(version);
158
159 return fd;
160 }
161