kms.c revision 0ed5401b 
1/*
2 * Copyright 2008 Tungsten Graphics
3 *   Jakob Bornecrantz <jakob@tungstengraphics.com>
4 * Copyright 2008 Intel Corporation
5 *   Jesse Barnes <jesse.barnes@intel.com>
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
46#include "xf86drm.h"
47#include "xf86drmMode.h"
48
49#include "common.h"
50
51struct type_name {
52	unsigned int type;
53	const char *name;
54};
55
56static const char *util_lookup_type_name(unsigned int type,
57					 const struct type_name *table,
58					 unsigned int count)
59{
60	unsigned int i;
61
62	for (i = 0; i < count; i++)
63		if (table[i].type == type)
64			return table[i].name;
65
66	return NULL;
67}
68
69static const struct type_name encoder_type_names[] = {
70	{ DRM_MODE_ENCODER_NONE, "none" },
71	{ DRM_MODE_ENCODER_DAC, "DAC" },
72	{ DRM_MODE_ENCODER_TMDS, "TMDS" },
73	{ DRM_MODE_ENCODER_LVDS, "LVDS" },
74	{ DRM_MODE_ENCODER_TVDAC, "TVDAC" },
75	{ DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
76	{ DRM_MODE_ENCODER_DSI, "DSI" },
77	{ DRM_MODE_ENCODER_DPMST, "DPMST" },
78	{ DRM_MODE_ENCODER_DPI, "DPI" },
79};
80
81const char *util_lookup_encoder_type_name(unsigned int type)
82{
83	return util_lookup_type_name(type, encoder_type_names,
84				     ARRAY_SIZE(encoder_type_names));
85}
86
87static const struct type_name connector_status_names[] = {
88	{ DRM_MODE_CONNECTED, "connected" },
89	{ DRM_MODE_DISCONNECTED, "disconnected" },
90	{ DRM_MODE_UNKNOWNCONNECTION, "unknown" },
91};
92
93const char *util_lookup_connector_status_name(unsigned int status)
94{
95	return util_lookup_type_name(status, connector_status_names,
96				     ARRAY_SIZE(connector_status_names));
97}
98
99static const char * const modules[] = {
100	"i915",
101	"amdgpu",
102	"radeon",
103	"nouveau",
104	"vmwgfx",
105	"omapdrm",
106	"exynos",
107	"tilcdc",
108	"msm",
109	"sti",
110	"tegra",
111	"imx-drm",
112	"rockchip",
113	"atmel-hlcdc",
114	"fsl-dcu-drm",
115	"vc4",
116	"virtio_gpu",
117	"mediatek",
118	"meson",
119	"pl111",
120	"stm",
121	"sun4i-drm",
122	"armada-drm",
123	"komeda",
124	"imx-dcss",
125	"mxsfb-drm",
126};
127
128int util_open(const char *device, const char *module)
129{
130	int fd;
131
132	if (module) {
133		fd = drmOpen(module, device);
134		if (fd < 0) {
135			fprintf(stderr, "failed to open device '%s': %s\n",
136				module, strerror(errno));
137			return -errno;
138		}
139	} else {
140		unsigned int i;
141
142		for (i = 0; i < ARRAY_SIZE(modules); i++) {
143			printf("trying to open device '%s'...", modules[i]);
144
145			fd = drmOpen(modules[i], device);
146			if (fd < 0) {
147				printf("failed\n");
148			} else {
149				printf("done\n");
150				break;
151			}
152		}
153
154		if (fd < 0) {
155			fprintf(stderr, "no device found\n");
156			return -ENODEV;
157		}
158	}
159
160	return fd;
161}
162