1 /*
2 * Copyright © 2017 Intel 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
25 #include "config.h"
26
27 #include <dirent.h>
28
29 #include "igt.h"
30 #include "igt_edid.h"
31 #include "igt_eld.h"
32
33 #define HDISPLAY_4K 3840
34 #define VDISPLAY_4K 2160
35
36 IGT_TEST_DESCRIPTION("Test that in-kernel EDID parsing is producing "
37 "expected results by forcing a disconnected HDMI "
38 "connector with a known EDID and checking that the "
39 "metadata exposed to user space matches.");
40
41 /**
42 * This collection of tests performs EDID and status injection tests. Injection
43 * forces a given EDID and status on a connector. The kernel will parse the
44 * forced EDID and we will check whether correct metadata is exposed to
45 * userspace.
46 *
47 * Currently, this can be used to test:
48 *
49 * - 4K modes exposed via KMS
50 * - Audio capabilities of the monitor exposed via ALSA. EDID-Like Data (ELD)
51 * entries in /proc/asound are verified.
52 *
53 * Injection is performed on a disconnected connector.
54 */
55
56 /** get_connector: get the first disconnected HDMI connector */
57 static drmModeConnector *
get_connector(int drm_fd,drmModeRes * res)58 get_connector(int drm_fd, drmModeRes *res)
59 {
60 int i;
61 drmModeConnector *connector;
62
63 for (i = 0; i < res->count_connectors; i++) {
64
65 connector =
66 drmModeGetConnectorCurrent(drm_fd, res->connectors[i]);
67
68 if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA)
69 break;
70
71 drmModeFreeConnector(connector);
72 connector = NULL;
73 }
74
75 return connector;
76 }
77
78 static void
hdmi_inject_4k(int drm_fd,drmModeConnector * connector)79 hdmi_inject_4k(int drm_fd, drmModeConnector *connector)
80 {
81 const struct edid *edid;
82 struct kmstest_connector_config config;
83 int ret, cid, i, crtc_mask = -1;
84 int fb_id;
85 struct igt_fb fb;
86 uint8_t found_4k_mode = 0;
87 uint32_t devid;
88
89 devid = intel_get_drm_devid(drm_fd);
90
91 /* 4K requires at least HSW */
92 igt_require(IS_HASWELL(devid) || intel_gen(devid) >= 8);
93
94 edid = igt_kms_get_4k_edid();
95 kmstest_force_edid(drm_fd, connector, edid);
96
97 if (!kmstest_force_connector(drm_fd, connector, FORCE_CONNECTOR_ON))
98 igt_skip("Could not force connector on\n");
99
100 cid = connector->connector_id;
101
102 connector = drmModeGetConnectorCurrent(drm_fd, cid);
103
104 for (i = 0; i < connector->count_modes; i++) {
105 if (connector->modes[i].hdisplay == HDISPLAY_4K &&
106 connector->modes[i].vdisplay == VDISPLAY_4K) {
107 found_4k_mode++;
108 break;
109 }
110 }
111
112 igt_assert(found_4k_mode);
113
114 /* create a configuration */
115 ret = kmstest_get_connector_config(drm_fd, cid, crtc_mask, &config);
116 igt_assert(ret);
117
118 igt_info(" ");
119 kmstest_dump_mode(&connector->modes[i]);
120
121 /* create framebuffer */
122 fb_id = igt_create_fb(drm_fd, connector->modes[i].hdisplay,
123 connector->modes[i].vdisplay,
124 DRM_FORMAT_XRGB8888,
125 LOCAL_DRM_FORMAT_MOD_NONE, &fb);
126
127 ret = drmModeSetCrtc(drm_fd, config.crtc->crtc_id, fb_id, 0, 0,
128 &connector->connector_id, 1,
129 &connector->modes[i]);
130
131 igt_assert(ret == 0);
132
133 igt_remove_fb(drm_fd, &fb);
134
135 kmstest_force_connector(drm_fd, connector, FORCE_CONNECTOR_UNSPECIFIED);
136 kmstest_force_edid(drm_fd, connector, NULL);
137 }
138
139 static void
hdmi_inject_audio(int drm_fd,drmModeConnector * connector)140 hdmi_inject_audio(int drm_fd, drmModeConnector *connector)
141 {
142 const struct edid *edid;
143 int fb_id, cid, ret, crtc_mask = -1;
144 struct igt_fb fb;
145 struct kmstest_connector_config config;
146
147 edid = igt_kms_get_hdmi_audio_edid();
148 kmstest_force_edid(drm_fd, connector, edid);
149
150 if (!kmstest_force_connector(drm_fd, connector, FORCE_CONNECTOR_ON))
151 igt_skip("Could not force connector on\n");
152
153 cid = connector->connector_id;
154 connector = drmModeGetConnectorCurrent(drm_fd, cid);
155
156 /* create a configuration */
157 ret = kmstest_get_connector_config(drm_fd, cid, crtc_mask, &config);
158 igt_assert(ret);
159
160 /*
161 * Create a framebuffer as to allow the kernel to enable the pipe and
162 * enable the audio encoder.
163 */
164 fb_id = igt_create_fb(drm_fd, connector->modes[0].hdisplay,
165 connector->modes[0].vdisplay,
166 DRM_FORMAT_XRGB8888,
167 LOCAL_DRM_FORMAT_MOD_NONE, &fb);
168
169 ret = drmModeSetCrtc(drm_fd, config.crtc->crtc_id, fb_id, 0, 0,
170 &connector->connector_id, 1,
171 &connector->modes[0]);
172
173
174 igt_assert(ret == 0);
175
176 /*
177 * Test if we have /proc/asound/HDMI/eld#0.0 and is its contents are
178 * valid.
179 */
180 igt_assert(eld_has_igt());
181
182 igt_remove_fb(drm_fd, &fb);
183
184 igt_info(" ");
185 kmstest_dump_mode(&connector->modes[0]);
186
187 kmstest_force_connector(drm_fd, connector, FORCE_CONNECTOR_UNSPECIFIED);
188 kmstest_force_edid(drm_fd, connector, NULL);
189 }
190
191 igt_main
192 {
193 int drm_fd;
194 drmModeRes *res;
195 drmModeConnector *connector;
196
197 igt_fixture {
198 drm_fd = drm_open_driver_master(DRIVER_INTEL);
199
200 res = drmModeGetResources(drm_fd);
201 igt_require(res);
202
203 connector = get_connector(drm_fd, res);
204 igt_require(connector);
205
206 kmstest_unset_all_crtcs(drm_fd, res);
207 }
208
209 igt_describe("Make sure that 4K modes exposed by DRM match the "
210 "forced EDID and modesetting using it succeed.");
211 igt_subtest("inject-4k")
212 hdmi_inject_4k(drm_fd, connector);
213
214 igt_describe("Make sure that audio information exposed by ALSA "
215 "match the forced EDID.");
216 igt_subtest("inject-audio")
217 hdmi_inject_audio(drm_fd, connector);
218
219 igt_fixture {
220 drmModeFreeConnector(connector);
221 }
222 }
223