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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/*
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 5
35static const char *generic_edid_name[GENERIC_EDIDS] = {
36 "edid/1024x768.bin",
37 "edid/1280x1024.bin",
38 "edid/1600x1200.bin",
39 "edid/1680x1050.bin",
40 "edid/1920x1080.bin",
41};
42
43static const u8 generic_edid[GENERIC_EDIDS][128] = {
44 {
45 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
46 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
47 0x05, 0x16, 0x01, 0x03, 0x6d, 0x23, 0x1a, 0x78,
48 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
49 0x20, 0x50, 0x54, 0x00, 0x08, 0x00, 0x61, 0x40,
50 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
51 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x64, 0x19,
52 0x00, 0x40, 0x41, 0x00, 0x26, 0x30, 0x08, 0x90,
53 0x36, 0x00, 0x63, 0x0a, 0x11, 0x00, 0x00, 0x18,
54 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
55 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
56 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
57 0x3d, 0x2f, 0x31, 0x07, 0x00, 0x0a, 0x20, 0x20,
58 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
59 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x58,
60 0x47, 0x41, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x55,
61 },
62 {
63 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
64 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
65 0x05, 0x16, 0x01, 0x03, 0x6d, 0x2c, 0x23, 0x78,
66 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
67 0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0x81, 0x80,
68 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
69 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x30, 0x2a,
70 0x00, 0x98, 0x51, 0x00, 0x2a, 0x40, 0x30, 0x70,
71 0x13, 0x00, 0xbc, 0x63, 0x11, 0x00, 0x00, 0x1e,
72 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
73 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
74 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
75 0x3d, 0x3e, 0x40, 0x0b, 0x00, 0x0a, 0x20, 0x20,
76 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
77 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x53,
78 0x58, 0x47, 0x41, 0x0a, 0x20, 0x20, 0x00, 0xa0,
79 },
80 {
81 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
82 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
83 0x05, 0x16, 0x01, 0x03, 0x6d, 0x37, 0x29, 0x78,
84 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
85 0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0xa9, 0x40,
86 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
87 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x48, 0x3f,
88 0x40, 0x30, 0x62, 0xb0, 0x32, 0x40, 0x40, 0xc0,
89 0x13, 0x00, 0x2b, 0xa0, 0x21, 0x00, 0x00, 0x1e,
90 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
91 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
92 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
93 0x3d, 0x4a, 0x4c, 0x11, 0x00, 0x0a, 0x20, 0x20,
94 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
95 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x55,
96 0x58, 0x47, 0x41, 0x0a, 0x20, 0x20, 0x00, 0x9d,
97 },
98 {
99 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
100 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
101 0x05, 0x16, 0x01, 0x03, 0x6d, 0x2b, 0x1b, 0x78,
102 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
103 0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0xb3, 0x00,
104 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
105 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x21, 0x39,
106 0x90, 0x30, 0x62, 0x1a, 0x27, 0x40, 0x68, 0xb0,
107 0x36, 0x00, 0xb5, 0x11, 0x11, 0x00, 0x00, 0x1e,
108 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
109 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
110 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
111 0x3d, 0x40, 0x42, 0x0f, 0x00, 0x0a, 0x20, 0x20,
112 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
113 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x57,
114 0x53, 0x58, 0x47, 0x41, 0x0a, 0x20, 0x00, 0x26,
115 },
116 {
117 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
118 0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
119 0x05, 0x16, 0x01, 0x03, 0x6d, 0x32, 0x1c, 0x78,
120 0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
121 0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0xd1, 0xc0,
122 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
123 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a,
124 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c,
125 0x45, 0x00, 0xf4, 0x19, 0x11, 0x00, 0x00, 0x1e,
126 0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
127 0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
128 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
129 0x3d, 0x42, 0x44, 0x0f, 0x00, 0x0a, 0x20, 0x20,
130 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
131 0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x46,
132 0x48, 0x44, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x05,
133 },
134};
135
136static int edid_size(const u8 *edid, int data_size)
137{
138 if (data_size < EDID_LENGTH)
139 return 0;
140
141 return (edid[0x7e] + 1) * EDID_LENGTH;
142}
143
144static void *edid_load(struct drm_connector *connector, const char *name,
145 const char *connector_name)
146{
147 const struct firmware *fw = NULL;
148 const u8 *fwdata;
149 u8 *edid;
150 int fwsize, builtin;
151 int i, valid_extensions = 0;
152 bool print_bad_edid = !connector->bad_edid_counter || (drm_debug & DRM_UT_KMS);
153
154 builtin = 0;
155 for (i = 0; i < GENERIC_EDIDS; i++) {
156 if (strcmp(name, generic_edid_name[i]) == 0) {
157 fwdata = generic_edid[i];
158 fwsize = sizeof(generic_edid[i]);
159 builtin = 1;
160 break;
161 }
162 }
163 if (!builtin) {
164 struct platform_device *pdev;
165 int err;
166
167 pdev = platform_device_register_simple(connector_name, -1, NULL, 0);
168 if (IS_ERR(pdev)) {
169 DRM_ERROR("Failed to register EDID firmware platform device "
170 "for connector \"%s\"\n", connector_name);
171 return ERR_CAST(pdev);
172 }
173
174 err = request_firmware(&fw, name, &pdev->dev);
175 platform_device_unregister(pdev);
176 if (err) {
177 DRM_ERROR("Requesting EDID firmware \"%s\" failed (err=%d)\n",
178 name, err);
179 return ERR_PTR(err);
180 }
181
182 fwdata = fw->data;
183 fwsize = fw->size;
184 }
185
186 if (edid_size(fwdata, fwsize) != fwsize) {
187 DRM_ERROR("Size of EDID firmware \"%s\" is invalid "
188 "(expected %d, got %d\n", name,
189 edid_size(fwdata, fwsize), (int)fwsize);
190 edid = ERR_PTR(-EINVAL);
191 goto out;
192 }
193
194 edid = kmemdup(fwdata, fwsize, GFP_KERNEL);
195 if (edid == NULL) {
196 edid = ERR_PTR(-ENOMEM);
197 goto out;
198 }
199
200 if (!drm_edid_block_valid(edid, 0, print_bad_edid)) {
201 connector->bad_edid_counter++;
202 DRM_ERROR("Base block of EDID firmware \"%s\" is invalid ",
203 name);
204 kfree(edid);
205 edid = ERR_PTR(-EINVAL);
206 goto out;
207 }
208
209 for (i = 1; i <= edid[0x7e]; i++) {
210 if (i != valid_extensions + 1)
211 memcpy(edid + (valid_extensions + 1) * EDID_LENGTH,
212 edid + i * EDID_LENGTH, EDID_LENGTH);
213 if (drm_edid_block_valid(edid + i * EDID_LENGTH, i, print_bad_edid))
214 valid_extensions++;
215 }
216
217 if (valid_extensions != edid[0x7e]) {
218 u8 *new_edid;
219
220 edid[EDID_LENGTH-1] += edid[0x7e] - valid_extensions;
221 DRM_INFO("Found %d valid extensions instead of %d in EDID data "
222 "\"%s\" for connector \"%s\"\n", valid_extensions,
223 edid[0x7e], name, connector_name);
224 edid[0x7e] = valid_extensions;
225
226 new_edid = krealloc(edid, (valid_extensions + 1) * EDID_LENGTH,
227 GFP_KERNEL);
228 if (new_edid)
229 edid = new_edid;
230 }
231
232 DRM_INFO("Got %s EDID base block and %d extension%s from "
233 "\"%s\" for connector \"%s\"\n", builtin ? "built-in" :
234 "external", valid_extensions, valid_extensions == 1 ? "" : "s",
235 name, connector_name);
236
237out:
238 if (fw)
239 release_firmware(fw);
240 return edid;
241}
242
243int drm_load_edid_firmware(struct drm_connector *connector)
244{
245 const char *connector_name = drm_get_connector_name(connector);
246 char *edidname = edid_firmware, *last, *colon;
247 int ret;
248 struct edid *edid;
249
250 if (*edidname == '\0')
251 return 0;
252
253 colon = strchr(edidname, ':');
254 if (colon != NULL) {
255 if (strncmp(connector_name, edidname, colon - edidname))
256 return 0;
257 edidname = colon + 1;
258 if (*edidname == '\0')
259 return 0;
260 }
261
262 last = edidname + strlen(edidname) - 1;
263 if (*last == '\n')
264 *last = '\0';
265
266 edid = edid_load(connector, edidname, connector_name);
267 if (IS_ERR_OR_NULL(edid))
268 return 0;
269
270 drm_mode_connector_update_edid_property(connector, edid);
271 ret = drm_add_edid_modes(connector, edid);
272 kfree(edid);
273
274 return ret;
275}