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1/*
2 drm_edid_load.c: use a built-in EDID data set or load it via the firmware
3 interface
4
5 Copyright (C) 2012 Carsten Emde <C.Emde@osadl.org>
6
7 This program is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License
9 as published by the Free Software Foundation; either version 2
10 of the License, or (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20*/
21
22#include <linux/module.h>
23#include <linux/firmware.h>
24#include <drm/drmP.h>
25#include <drm/drm_crtc.h>
26#include <drm/drm_crtc_helper.h>
27#include <drm/drm_edid.h>
28
29static char edid_firmware[PATH_MAX];
30module_param_string(edid_firmware, edid_firmware, sizeof(edid_firmware), 0644);
31MODULE_PARM_DESC(edid_firmware, "Do not probe monitor, use specified EDID blob "
32 "from built-in data or /lib/firmware instead. ");
33
34#define GENERIC_EDIDS 6
35static const char * const generic_edid_name[GENERIC_EDIDS] = {
36 "edid/800x600.bin",
37 "edid/1024x768.bin",
38 "edid/1280x1024.bin",
39 "edid/1600x1200.bin",
40 "edid/1680x1050.bin",
41 "edid/1920x1080.bin",
42};
43
44static const u8 generic_edid[GENERIC_EDIDS][128] = {
45 {
46 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
47 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
48 0x05, 0x16, 0x01, 0x03, 0x6d, 0x1b, 0x14, 0x78,
49 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
50 0x20, 0x50, 0x54, 0x01, 0x00, 0x00, 0x45, 0x40,
51 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
52 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0xa0, 0x0f,
53 0x20, 0x00, 0x31, 0x58, 0x1c, 0x20, 0x28, 0x80,
54 0x14, 0x00, 0x15, 0xd0, 0x10, 0x00, 0x00, 0x1e,
55 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
56 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
57 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
58 0x3d, 0x24, 0x26, 0x05, 0x00, 0x0a, 0x20, 0x20,
59 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
60 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x53,
61 0x56, 0x47, 0x41, 0x0a, 0x20, 0x20, 0x00, 0xc2,
62 },
63 {
64 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
65 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
66 0x05, 0x16, 0x01, 0x03, 0x6d, 0x23, 0x1a, 0x78,
67 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
68 0x20, 0x50, 0x54, 0x00, 0x08, 0x00, 0x61, 0x40,
69 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
70 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x64, 0x19,
71 0x00, 0x40, 0x41, 0x00, 0x26, 0x30, 0x08, 0x90,
72 0x36, 0x00, 0x63, 0x0a, 0x11, 0x00, 0x00, 0x18,
73 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
74 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
75 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
76 0x3d, 0x2f, 0x31, 0x07, 0x00, 0x0a, 0x20, 0x20,
77 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
78 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x58,
79 0x47, 0x41, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x55,
80 },
81 {
82 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
83 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
84 0x05, 0x16, 0x01, 0x03, 0x6d, 0x2c, 0x23, 0x78,
85 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
86 0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0x81, 0x80,
87 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
88 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x30, 0x2a,
89 0x00, 0x98, 0x51, 0x00, 0x2a, 0x40, 0x30, 0x70,
90 0x13, 0x00, 0xbc, 0x63, 0x11, 0x00, 0x00, 0x1e,
91 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
92 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
93 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
94 0x3d, 0x3e, 0x40, 0x0b, 0x00, 0x0a, 0x20, 0x20,
95 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
96 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x53,
97 0x58, 0x47, 0x41, 0x0a, 0x20, 0x20, 0x00, 0xa0,
98 },
99 {
100 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
101 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
102 0x05, 0x16, 0x01, 0x03, 0x6d, 0x37, 0x29, 0x78,
103 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
104 0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0xa9, 0x40,
105 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
106 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x48, 0x3f,
107 0x40, 0x30, 0x62, 0xb0, 0x32, 0x40, 0x40, 0xc0,
108 0x13, 0x00, 0x2b, 0xa0, 0x21, 0x00, 0x00, 0x1e,
109 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
110 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
111 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
112 0x3d, 0x4a, 0x4c, 0x11, 0x00, 0x0a, 0x20, 0x20,
113 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
114 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x55,
115 0x58, 0x47, 0x41, 0x0a, 0x20, 0x20, 0x00, 0x9d,
116 },
117 {
118 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
119 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
120 0x05, 0x16, 0x01, 0x03, 0x6d, 0x2b, 0x1b, 0x78,
121 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
122 0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0xb3, 0x00,
123 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
124 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x21, 0x39,
125 0x90, 0x30, 0x62, 0x1a, 0x27, 0x40, 0x68, 0xb0,
126 0x36, 0x00, 0xb5, 0x11, 0x11, 0x00, 0x00, 0x1e,
127 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
128 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
129 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
130 0x3d, 0x40, 0x42, 0x0f, 0x00, 0x0a, 0x20, 0x20,
131 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
132 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x57,
133 0x53, 0x58, 0x47, 0x41, 0x0a, 0x20, 0x00, 0x26,
134 },
135 {
136 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
137 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
138 0x05, 0x16, 0x01, 0x03, 0x6d, 0x32, 0x1c, 0x78,
139 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
140 0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0xd1, 0xc0,
141 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
142 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a,
143 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c,
144 0x45, 0x00, 0xf4, 0x19, 0x11, 0x00, 0x00, 0x1e,
145 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
146 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
147 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
148 0x3d, 0x42, 0x44, 0x0f, 0x00, 0x0a, 0x20, 0x20,
149 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
150 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x46,
151 0x48, 0x44, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x05,
152 },
153};
154
155static int edid_size(const u8 *edid, int data_size)
156{
157 if (data_size < EDID_LENGTH)
158 return 0;
159
160 return (edid[0x7e] + 1) * EDID_LENGTH;
161}
162
163static void *edid_load(struct drm_connector *connector, const char *name,
164 const char *connector_name)
165{
166 const struct firmware *fw = NULL;
167 const u8 *fwdata;
168 u8 *edid;
169 int fwsize, builtin;
170 int i, valid_extensions = 0;
171 bool print_bad_edid = !connector->bad_edid_counter || (drm_debug & DRM_UT_KMS);
172
173 builtin = match_string(generic_edid_name, GENERIC_EDIDS, name);
174 if (builtin >= 0) {
175 fwdata = generic_edid[builtin];
176 fwsize = sizeof(generic_edid[builtin]);
177 } else {
178 struct platform_device *pdev;
179 int err;
180
181 pdev = platform_device_register_simple(connector_name, -1, NULL, 0);
182 if (IS_ERR(pdev)) {
183 DRM_ERROR("Failed to register EDID firmware platform device "
184 "for connector \"%s\"\n", connector_name);
185 return ERR_CAST(pdev);
186 }
187
188 err = request_firmware(&fw, name, &pdev->dev);
189 platform_device_unregister(pdev);
190 if (err) {
191 DRM_ERROR("Requesting EDID firmware \"%s\" failed (err=%d)\n",
192 name, err);
193 return ERR_PTR(err);
194 }
195
196 fwdata = fw->data;
197 fwsize = fw->size;
198 }
199
200 if (edid_size(fwdata, fwsize) != fwsize) {
201 DRM_ERROR("Size of EDID firmware \"%s\" is invalid "
202 "(expected %d, got %d\n", name,
203 edid_size(fwdata, fwsize), (int)fwsize);
204 edid = ERR_PTR(-EINVAL);
205 goto out;
206 }
207
208 edid = kmemdup(fwdata, fwsize, GFP_KERNEL);
209 if (edid == NULL) {
210 edid = ERR_PTR(-ENOMEM);
211 goto out;
212 }
213
214 if (!drm_edid_block_valid(edid, 0, print_bad_edid,
215 &connector->edid_corrupt)) {
216 connector->bad_edid_counter++;
217 DRM_ERROR("Base block of EDID firmware \"%s\" is invalid ",
218 name);
219 kfree(edid);
220 edid = ERR_PTR(-EINVAL);
221 goto out;
222 }
223
224 for (i = 1; i <= edid[0x7e]; i++) {
225 if (i != valid_extensions + 1)
226 memcpy(edid + (valid_extensions + 1) * EDID_LENGTH,
227 edid + i * EDID_LENGTH, EDID_LENGTH);
228 if (drm_edid_block_valid(edid + i * EDID_LENGTH, i,
229 print_bad_edid,
230 NULL))
231 valid_extensions++;
232 }
233
234 if (valid_extensions != edid[0x7e]) {
235 u8 *new_edid;
236
237 edid[EDID_LENGTH-1] += edid[0x7e] - valid_extensions;
238 DRM_INFO("Found %d valid extensions instead of %d in EDID data "
239 "\"%s\" for connector \"%s\"\n", valid_extensions,
240 edid[0x7e], name, connector_name);
241 edid[0x7e] = valid_extensions;
242
243 new_edid = krealloc(edid, (valid_extensions + 1) * EDID_LENGTH,
244 GFP_KERNEL);
245 if (new_edid)
246 edid = new_edid;
247 }
248
249 DRM_INFO("Got %s EDID base block and %d extension%s from "
250 "\"%s\" for connector \"%s\"\n", (builtin >= 0) ? "built-in" :
251 "external", valid_extensions, valid_extensions == 1 ? "" : "s",
252 name, connector_name);
253
254out:
255 release_firmware(fw);
256 return edid;
257}
258
259int drm_load_edid_firmware(struct drm_connector *connector)
260{
261 const char *connector_name = connector->name;
262 char *edidname, *last, *colon, *fwstr, *edidstr, *fallback = NULL;
263 int ret;
264 struct edid *edid;
265
266 if (edid_firmware[0] == '\0')
267 return 0;
268
269 /*
270 * If there are multiple edid files specified and separated
271 * by commas, search through the list looking for one that
272 * matches the connector.
273 *
274 * If there's one or more that don't't specify a connector, keep
275 * the last one found one as a fallback.
276 */
277 fwstr = kstrdup(edid_firmware, GFP_KERNEL);
278 edidstr = fwstr;
279
280 while ((edidname = strsep(&edidstr, ","))) {
281 colon = strchr(edidname, ':');
282 if (colon != NULL) {
283 if (strncmp(connector_name, edidname, colon - edidname))
284 continue;
285 edidname = colon + 1;
286 break;
287 }
288
289 if (*edidname != '\0') /* corner case: multiple ',' */
290 fallback = edidname;
291 }
292
293 if (!edidname) {
294 if (!fallback) {
295 kfree(fwstr);
296 return 0;
297 }
298 edidname = fallback;
299 }
300
301 last = edidname + strlen(edidname) - 1;
302 if (*last == '\n')
303 *last = '\0';
304
305 edid = edid_load(connector, edidname, connector_name);
306 kfree(fwstr);
307
308 if (IS_ERR_OR_NULL(edid))
309 return 0;
310
311 drm_mode_connector_update_edid_property(connector, edid);
312 ret = drm_add_edid_modes(connector, edid);
313 drm_edid_to_eld(connector, edid);
314 kfree(edid);
315
316 return ret;
317}
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 drm_edid_load.c: use a built-in EDID data set or load it via the firmware
4 interface
5
6 Copyright (C) 2012 Carsten Emde <C.Emde@osadl.org>
7
8*/
9
10#include <linux/firmware.h>
11#include <linux/module.h>
12#include <linux/platform_device.h>
13
14#include <drm/drm_connector.h>
15#include <drm/drm_drv.h>
16#include <drm/drm_edid.h>
17#include <drm/drm_print.h>
18
19#include "drm_crtc_internal.h"
20
21static char edid_firmware[PATH_MAX];
22module_param_string(edid_firmware, edid_firmware, sizeof(edid_firmware), 0644);
23MODULE_PARM_DESC(edid_firmware, "Do not probe monitor, use specified EDID blob "
24 "from built-in data or /lib/firmware instead. ");
25
26#define GENERIC_EDIDS 6
27static const char * const generic_edid_name[GENERIC_EDIDS] = {
28 "edid/800x600.bin",
29 "edid/1024x768.bin",
30 "edid/1280x1024.bin",
31 "edid/1600x1200.bin",
32 "edid/1680x1050.bin",
33 "edid/1920x1080.bin",
34};
35
36static const u8 generic_edid[GENERIC_EDIDS][128] = {
37 {
38 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
39 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
40 0x05, 0x16, 0x01, 0x03, 0x6d, 0x1b, 0x14, 0x78,
41 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
42 0x20, 0x50, 0x54, 0x01, 0x00, 0x00, 0x45, 0x40,
43 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
44 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0xa0, 0x0f,
45 0x20, 0x00, 0x31, 0x58, 0x1c, 0x20, 0x28, 0x80,
46 0x14, 0x00, 0x15, 0xd0, 0x10, 0x00, 0x00, 0x1e,
47 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
48 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
49 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
50 0x3d, 0x24, 0x26, 0x05, 0x00, 0x0a, 0x20, 0x20,
51 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
52 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x53,
53 0x56, 0x47, 0x41, 0x0a, 0x20, 0x20, 0x00, 0xc2,
54 },
55 {
56 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
57 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
58 0x05, 0x16, 0x01, 0x03, 0x6d, 0x23, 0x1a, 0x78,
59 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
60 0x20, 0x50, 0x54, 0x00, 0x08, 0x00, 0x61, 0x40,
61 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
62 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x64, 0x19,
63 0x00, 0x40, 0x41, 0x00, 0x26, 0x30, 0x08, 0x90,
64 0x36, 0x00, 0x63, 0x0a, 0x11, 0x00, 0x00, 0x18,
65 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
66 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
67 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
68 0x3d, 0x2f, 0x31, 0x07, 0x00, 0x0a, 0x20, 0x20,
69 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
70 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x58,
71 0x47, 0x41, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x55,
72 },
73 {
74 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
75 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
76 0x05, 0x16, 0x01, 0x03, 0x6d, 0x2c, 0x23, 0x78,
77 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
78 0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0x81, 0x80,
79 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
80 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x30, 0x2a,
81 0x00, 0x98, 0x51, 0x00, 0x2a, 0x40, 0x30, 0x70,
82 0x13, 0x00, 0xbc, 0x63, 0x11, 0x00, 0x00, 0x1e,
83 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
84 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
85 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
86 0x3d, 0x3e, 0x40, 0x0b, 0x00, 0x0a, 0x20, 0x20,
87 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
88 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x53,
89 0x58, 0x47, 0x41, 0x0a, 0x20, 0x20, 0x00, 0xa0,
90 },
91 {
92 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
93 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
94 0x05, 0x16, 0x01, 0x03, 0x6d, 0x37, 0x29, 0x78,
95 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
96 0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0xa9, 0x40,
97 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
98 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x48, 0x3f,
99 0x40, 0x30, 0x62, 0xb0, 0x32, 0x40, 0x40, 0xc0,
100 0x13, 0x00, 0x2b, 0xa0, 0x21, 0x00, 0x00, 0x1e,
101 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
102 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
103 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
104 0x3d, 0x4a, 0x4c, 0x11, 0x00, 0x0a, 0x20, 0x20,
105 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
106 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x55,
107 0x58, 0x47, 0x41, 0x0a, 0x20, 0x20, 0x00, 0x9d,
108 },
109 {
110 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
111 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
112 0x05, 0x16, 0x01, 0x03, 0x6d, 0x2b, 0x1b, 0x78,
113 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
114 0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0xb3, 0x00,
115 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
116 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x21, 0x39,
117 0x90, 0x30, 0x62, 0x1a, 0x27, 0x40, 0x68, 0xb0,
118 0x36, 0x00, 0xb5, 0x11, 0x11, 0x00, 0x00, 0x1e,
119 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
120 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
121 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
122 0x3d, 0x40, 0x42, 0x0f, 0x00, 0x0a, 0x20, 0x20,
123 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
124 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x57,
125 0x53, 0x58, 0x47, 0x41, 0x0a, 0x20, 0x00, 0x26,
126 },
127 {
128 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
129 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
130 0x05, 0x16, 0x01, 0x03, 0x6d, 0x32, 0x1c, 0x78,
131 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
132 0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0xd1, 0xc0,
133 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
134 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a,
135 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c,
136 0x45, 0x00, 0xf4, 0x19, 0x11, 0x00, 0x00, 0x1e,
137 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
138 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
139 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
140 0x3d, 0x42, 0x44, 0x0f, 0x00, 0x0a, 0x20, 0x20,
141 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
142 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x46,
143 0x48, 0x44, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x05,
144 },
145};
146
147static const struct drm_edid *edid_load(struct drm_connector *connector, const char *name)
148{
149 const struct firmware *fw = NULL;
150 const u8 *fwdata;
151 const struct drm_edid *drm_edid;
152 int fwsize, builtin;
153
154 builtin = match_string(generic_edid_name, GENERIC_EDIDS, name);
155 if (builtin >= 0) {
156 fwdata = generic_edid[builtin];
157 fwsize = sizeof(generic_edid[builtin]);
158 } else {
159 int err;
160
161 err = request_firmware(&fw, name, connector->dev->dev);
162 if (err) {
163 drm_err(connector->dev,
164 "[CONNECTOR:%d:%s] Requesting EDID firmware \"%s\" failed (err=%d)\n",
165 connector->base.id, connector->name,
166 name, err);
167 return ERR_PTR(err);
168 }
169
170 fwdata = fw->data;
171 fwsize = fw->size;
172 }
173
174 drm_dbg_kms(connector->dev, "[CONNECTOR:%d:%s] Loaded %s firmware EDID \"%s\"\n",
175 connector->base.id, connector->name,
176 builtin >= 0 ? "built-in" : "external", name);
177
178 drm_edid = drm_edid_alloc(fwdata, fwsize);
179 if (!drm_edid_valid(drm_edid)) {
180 drm_err(connector->dev, "Invalid firmware EDID \"%s\"\n", name);
181 drm_edid_free(drm_edid);
182 drm_edid = ERR_PTR(-EINVAL);
183 }
184
185 release_firmware(fw);
186
187 return drm_edid;
188}
189
190const struct drm_edid *drm_edid_load_firmware(struct drm_connector *connector)
191{
192 char *edidname, *last, *colon, *fwstr, *edidstr, *fallback = NULL;
193 const struct drm_edid *drm_edid;
194
195 if (edid_firmware[0] == '\0')
196 return ERR_PTR(-ENOENT);
197
198 /*
199 * If there are multiple edid files specified and separated
200 * by commas, search through the list looking for one that
201 * matches the connector.
202 *
203 * If there's one or more that doesn't specify a connector, keep
204 * the last one found one as a fallback.
205 */
206 fwstr = kstrdup(edid_firmware, GFP_KERNEL);
207 if (!fwstr)
208 return ERR_PTR(-ENOMEM);
209 edidstr = fwstr;
210
211 while ((edidname = strsep(&edidstr, ","))) {
212 colon = strchr(edidname, ':');
213 if (colon != NULL) {
214 if (strncmp(connector->name, edidname, colon - edidname))
215 continue;
216 edidname = colon + 1;
217 break;
218 }
219
220 if (*edidname != '\0') /* corner case: multiple ',' */
221 fallback = edidname;
222 }
223
224 if (!edidname) {
225 if (!fallback) {
226 kfree(fwstr);
227 return ERR_PTR(-ENOENT);
228 }
229 edidname = fallback;
230 }
231
232 last = edidname + strlen(edidname) - 1;
233 if (*last == '\n')
234 *last = '\0';
235
236 drm_edid = edid_load(connector, edidname);
237
238 kfree(fwstr);
239
240 return drm_edid;
241}