1/*
2 * DRM based mode setting test program
3 * Copyright 2008 Tungsten Graphics
4 *   Jakob Bornecrantz <jakob@tungstengraphics.com>
5 * Copyright 2008 Intel Corporation
6 *   Jesse Barnes <jesse.barnes@intel.com>
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * IN THE SOFTWARE.
25 */
26
27/*
28 * This fairly simple test program dumps output in a similar format to the
29 * "xrandr" tool everyone knows & loves.  It's necessarily slightly different
30 * since the kernel separates outputs into encoder and connector structures,
31 * each with their own unique ID.  The program also allows test testing of the
32 * memory management and mode setting APIs by allowing the user to specify a
33 * connector and mode to use for mode setting.  If all works as expected, a
34 * blue background should be painted on the monitor attached to the specified
35 * connector after the selected mode is set.
36 *
37 * TODO: use cairo to write the mode info on the selected output once
38 *       the mode has been programmed, along with possible test patterns.
39 */
40#ifdef HAVE_CONFIG_H
41#include "config.h"
42#endif
43
44#include <assert.h>
45#include <stdio.h>
46#include <stdlib.h>
47#include <stdint.h>
48#include <unistd.h>
49#include <string.h>
50#include <errno.h>
51#include <sys/poll.h>
52#include <sys/time.h>
53
54#include "xf86drm.h"
55#include "xf86drmMode.h"
56
57#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
58
59extern char *optarg;
60extern int optind, opterr, optopt;
61static char optstr[] = "s";
62
63int secondary = 0;
64
65struct vbl_info {
66	unsigned int vbl_count;
67	struct timeval start;
68};
69
70static void vblank_handler(int fd, unsigned int frame, unsigned int sec,
71			   unsigned int usec, void *data)
72{
73	drmVBlank vbl;
74	struct timeval end;
75	struct vbl_info *info = data;
76	double t;
77
78	vbl.request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT;
79	if (secondary)
80		vbl.request.type |= DRM_VBLANK_SECONDARY;
81	vbl.request.sequence = 1;
82	vbl.request.signal = (unsigned long)data;
83
84	drmWaitVBlank(fd, &vbl);
85
86	info->vbl_count++;
87
88	if (info->vbl_count == 60) {
89		gettimeofday(&end, NULL);
90		t = end.tv_sec + end.tv_usec * 1e-6 -
91			(info->start.tv_sec + info->start.tv_usec * 1e-6);
92		fprintf(stderr, "freq: %.02fHz\n", info->vbl_count / t);
93		info->vbl_count = 0;
94		info->start = end;
95	}
96}
97
98static void usage(char *name)
99{
100	fprintf(stderr, "usage: %s [-s]\n", name);
101	fprintf(stderr, "\t-s\tuse secondary pipe\n");
102	exit(0);
103}
104
105int main(int argc, char **argv)
106{
107	int i, c, fd, ret;
108	char *modules[] = { "i915", "radeon", "nouveau", "vmwgfx", "exynos", "omapdrm", "tilcdc", "msm", "tegra" };
109	drmVBlank vbl;
110	drmEventContext evctx;
111	struct vbl_info handler_info;
112
113	opterr = 0;
114	while ((c = getopt(argc, argv, optstr)) != -1) {
115		switch (c) {
116		case 's':
117			secondary = 1;
118			break;
119		default:
120			usage(argv[0]);
121			break;
122		}
123	}
124
125	for (i = 0; i < ARRAY_SIZE(modules); i++) {
126		printf("trying to load module %s...", modules[i]);
127		fd = drmOpen(modules[i], NULL);
128		if (fd < 0) {
129			printf("failed.\n");
130		} else {
131			printf("success.\n");
132			break;
133		}
134	}
135
136	if (i == ARRAY_SIZE(modules)) {
137		fprintf(stderr, "failed to load any modules, aborting.\n");
138		return -1;
139	}
140
141	/* Get current count first */
142	vbl.request.type = DRM_VBLANK_RELATIVE;
143	if (secondary)
144		vbl.request.type |= DRM_VBLANK_SECONDARY;
145	vbl.request.sequence = 0;
146	ret = drmWaitVBlank(fd, &vbl);
147	if (ret != 0) {
148		printf("drmWaitVBlank (relative) failed ret: %i\n", ret);
149		return -1;
150	}
151
152	printf("starting count: %d\n", vbl.request.sequence);
153
154	handler_info.vbl_count = 0;
155	gettimeofday(&handler_info.start, NULL);
156
157	/* Queue an event for frame + 1 */
158	vbl.request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT;
159	if (secondary)
160		vbl.request.type |= DRM_VBLANK_SECONDARY;
161	vbl.request.sequence = 1;
162	vbl.request.signal = (unsigned long)&handler_info;
163	ret = drmWaitVBlank(fd, &vbl);
164	if (ret != 0) {
165		printf("drmWaitVBlank (relative, event) failed ret: %i\n", ret);
166		return -1;
167	}
168
169	/* Set up our event handler */
170	memset(&evctx, 0, sizeof evctx);
171	evctx.version = DRM_EVENT_CONTEXT_VERSION;
172	evctx.vblank_handler = vblank_handler;
173	evctx.page_flip_handler = NULL;
174
175	/* Poll for events */
176	while (1) {
177		struct timeval timeout = { .tv_sec = 3, .tv_usec = 0 };
178		fd_set fds;
179		int ret;
180
181		FD_ZERO(&fds);
182		FD_SET(0, &fds);
183		FD_SET(fd, &fds);
184		ret = select(fd + 1, &fds, NULL, NULL, &timeout);
185
186		if (ret <= 0) {
187			fprintf(stderr, "select timed out or error (ret %d)\n",
188				ret);
189			continue;
190		} else if (FD_ISSET(0, &fds)) {
191			break;
192		}
193
194		ret = drmHandleEvent(fd, &evctx);
195		if (ret != 0) {
196			printf("drmHandleEvent failed: %i\n", ret);
197			return -1;
198		}
199	}
200
201	return 0;
202}
203