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