1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
|
/*
* Created: Sun Dec 21 13:08:50 2008 by bgamari@gmail.com
*
* Copyright 2008 Ben Gamari <bgamari@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include <linux/debugfs.h>
#include <linux/export.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <drm/drm_atomic.h>
#include <drm/drm_auth.h>
#include <drm/drm_bridge.h>
#include <drm/drm_client.h>
#include <drm/drm_debugfs.h>
#include <drm/drm_device.h>
#include <drm/drm_drv.h>
#include <drm/drm_edid.h>
#include <drm/drm_file.h>
#include <drm/drm_gem.h>
#include <drm/drm_managed.h>
#include <drm/drm_gpuvm.h>
#include "drm_crtc_internal.h"
#include "drm_internal.h"
/***************************************************
* Initialization, etc.
**************************************************/
static int drm_name_info(struct seq_file *m, void *data)
{
struct drm_debugfs_entry *entry = m->private;
struct drm_device *dev = entry->dev;
struct drm_master *master;
mutex_lock(&dev->master_mutex);
master = dev->master;
seq_printf(m, "%s", dev->driver->name);
if (dev->dev)
seq_printf(m, " dev=%s", dev_name(dev->dev));
if (master && master->unique)
seq_printf(m, " master=%s", master->unique);
if (dev->unique)
seq_printf(m, " unique=%s", dev->unique);
seq_printf(m, "\n");
mutex_unlock(&dev->master_mutex);
return 0;
}
static int drm_clients_info(struct seq_file *m, void *data)
{
struct drm_debugfs_entry *entry = m->private;
struct drm_device *dev = entry->dev;
struct drm_file *priv;
kuid_t uid;
seq_printf(m,
"%20s %5s %3s master a %5s %10s\n",
"command",
"tgid",
"dev",
"uid",
"magic");
/* dev->filelist is sorted youngest first, but we want to present
* oldest first (i.e. kernel, servers, clients), so walk backwardss.
*/
mutex_lock(&dev->filelist_mutex);
list_for_each_entry_reverse(priv, &dev->filelist, lhead) {
bool is_current_master = drm_is_current_master(priv);
struct task_struct *task;
struct pid *pid;
rcu_read_lock(); /* Locks priv->pid and pid_task()->comm! */
pid = rcu_dereference(priv->pid);
task = pid_task(pid, PIDTYPE_TGID);
uid = task ? __task_cred(task)->euid : GLOBAL_ROOT_UID;
seq_printf(m, "%20s %5d %3d %c %c %5d %10u\n",
task ? task->comm : "<unknown>",
pid_vnr(pid),
priv->minor->index,
is_current_master ? 'y' : 'n',
priv->authenticated ? 'y' : 'n',
from_kuid_munged(seq_user_ns(m), uid),
priv->magic);
rcu_read_unlock();
}
mutex_unlock(&dev->filelist_mutex);
return 0;
}
static int drm_gem_one_name_info(int id, void *ptr, void *data)
{
struct drm_gem_object *obj = ptr;
struct seq_file *m = data;
seq_printf(m, "%6d %8zd %7d %8d\n",
obj->name, obj->size,
obj->handle_count,
kref_read(&obj->refcount));
return 0;
}
static int drm_gem_name_info(struct seq_file *m, void *data)
{
struct drm_debugfs_entry *entry = m->private;
struct drm_device *dev = entry->dev;
seq_printf(m, " name size handles refcount\n");
mutex_lock(&dev->object_name_lock);
idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
mutex_unlock(&dev->object_name_lock);
return 0;
}
static const struct drm_debugfs_info drm_debugfs_list[] = {
{"name", drm_name_info, 0},
{"clients", drm_clients_info, 0},
{"gem_names", drm_gem_name_info, DRIVER_GEM},
};
#define DRM_DEBUGFS_ENTRIES ARRAY_SIZE(drm_debugfs_list)
static int drm_debugfs_open(struct inode *inode, struct file *file)
{
struct drm_info_node *node = inode->i_private;
if (!device_is_registered(node->minor->kdev))
return -ENODEV;
return single_open(file, node->info_ent->show, node);
}
static int drm_debugfs_entry_open(struct inode *inode, struct file *file)
{
struct drm_debugfs_entry *entry = inode->i_private;
struct drm_debugfs_info *node = &entry->file;
struct drm_minor *minor = entry->dev->primary ?: entry->dev->accel;
if (!device_is_registered(minor->kdev))
return -ENODEV;
return single_open(file, node->show, entry);
}
static const struct file_operations drm_debugfs_entry_fops = {
.owner = THIS_MODULE,
.open = drm_debugfs_entry_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static const struct file_operations drm_debugfs_fops = {
.owner = THIS_MODULE,
.open = drm_debugfs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/**
* drm_debugfs_gpuva_info - dump the given DRM GPU VA space
* @m: pointer to the &seq_file to write
* @gpuvm: the &drm_gpuvm representing the GPU VA space
*
* Dumps the GPU VA mappings of a given DRM GPU VA manager.
*
* For each DRM GPU VA space drivers should call this function from their
* &drm_info_list's show callback.
*
* Returns: 0 on success, -ENODEV if the &gpuvm is not initialized
*/
int drm_debugfs_gpuva_info(struct seq_file *m,
struct drm_gpuvm *gpuvm)
{
struct drm_gpuva *va, *kva = &gpuvm->kernel_alloc_node;
if (!gpuvm->name)
return -ENODEV;
seq_printf(m, "DRM GPU VA space (%s) [0x%016llx;0x%016llx]\n",
gpuvm->name, gpuvm->mm_start, gpuvm->mm_start + gpuvm->mm_range);
seq_printf(m, "Kernel reserved node [0x%016llx;0x%016llx]\n",
kva->va.addr, kva->va.addr + kva->va.range);
seq_puts(m, "\n");
seq_puts(m, " VAs | start | range | end | object | object offset\n");
seq_puts(m, "-------------------------------------------------------------------------------------------------------------\n");
drm_gpuvm_for_each_va(va, gpuvm) {
if (unlikely(va == kva))
continue;
seq_printf(m, " | 0x%016llx | 0x%016llx | 0x%016llx | 0x%016llx | 0x%016llx\n",
va->va.addr, va->va.range, va->va.addr + va->va.range,
(u64)(uintptr_t)va->gem.obj, va->gem.offset);
}
return 0;
}
EXPORT_SYMBOL(drm_debugfs_gpuva_info);
/**
* drm_debugfs_create_files - Initialize a given set of debugfs files for DRM
* minor
* @files: The array of files to create
* @count: The number of files given
* @root: DRI debugfs dir entry.
* @minor: device minor number
*
* Create a given set of debugfs files represented by an array of
* &struct drm_info_list in the given root directory. These files will be removed
* automatically on drm_debugfs_dev_fini().
*/
void drm_debugfs_create_files(const struct drm_info_list *files, int count,
struct dentry *root, struct drm_minor *minor)
{
struct drm_device *dev = minor->dev;
struct drm_info_node *tmp;
int i;
for (i = 0; i < count; i++) {
u32 features = files[i].driver_features;
if (features && !drm_core_check_all_features(dev, features))
continue;
tmp = drmm_kzalloc(dev, sizeof(*tmp), GFP_KERNEL);
if (tmp == NULL)
continue;
tmp->minor = minor;
tmp->dent = debugfs_create_file(files[i].name,
0444, root, tmp,
&drm_debugfs_fops);
tmp->info_ent = &files[i];
}
}
EXPORT_SYMBOL(drm_debugfs_create_files);
int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
struct dentry *root, struct drm_minor *minor)
{
int i;
for (i = 0; i < count; i++) {
struct dentry *dent = debugfs_lookup(files[i].name, root);
if (!dent)
continue;
drmm_kfree(minor->dev, d_inode(dent)->i_private);
debugfs_remove(dent);
}
return 0;
}
EXPORT_SYMBOL(drm_debugfs_remove_files);
/**
* drm_debugfs_dev_init - create debugfs directory for the device
* @dev: the device which we want to create the directory for
* @root: the parent directory depending on the device type
*
* Creates the debugfs directory for the device under the given root directory.
*/
void drm_debugfs_dev_init(struct drm_device *dev, struct dentry *root)
{
dev->debugfs_root = debugfs_create_dir(dev->unique, root);
}
/**
* drm_debugfs_dev_fini - cleanup debugfs directory
* @dev: the device to cleanup the debugfs stuff
*
* Remove the debugfs directory, might be called multiple times.
*/
void drm_debugfs_dev_fini(struct drm_device *dev)
{
debugfs_remove_recursive(dev->debugfs_root);
dev->debugfs_root = NULL;
}
void drm_debugfs_dev_register(struct drm_device *dev)
{
drm_debugfs_add_files(dev, drm_debugfs_list, DRM_DEBUGFS_ENTRIES);
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
drm_framebuffer_debugfs_init(dev);
drm_client_debugfs_init(dev);
}
if (drm_drv_uses_atomic_modeset(dev))
drm_atomic_debugfs_init(dev);
}
int drm_debugfs_register(struct drm_minor *minor, int minor_id,
struct dentry *root)
{
struct drm_device *dev = minor->dev;
char name[64];
sprintf(name, "%d", minor_id);
minor->debugfs_symlink = debugfs_create_symlink(name, root,
dev->unique);
/* TODO: Only for compatibility with drivers */
minor->debugfs_root = dev->debugfs_root;
if (dev->driver->debugfs_init && dev->render != minor)
dev->driver->debugfs_init(minor);
return 0;
}
void drm_debugfs_unregister(struct drm_minor *minor)
{
debugfs_remove(minor->debugfs_symlink);
minor->debugfs_symlink = NULL;
}
/**
* drm_debugfs_add_file - Add a given file to the DRM device debugfs file list
* @dev: drm device for the ioctl
* @name: debugfs file name
* @show: show callback
* @data: driver-private data, should not be device-specific
*
* Add a given file entry to the DRM device debugfs file list to be created on
* drm_debugfs_init.
*/
void drm_debugfs_add_file(struct drm_device *dev, const char *name,
int (*show)(struct seq_file*, void*), void *data)
{
struct drm_debugfs_entry *entry = drmm_kzalloc(dev, sizeof(*entry), GFP_KERNEL);
if (!entry)
return;
entry->file.name = name;
entry->file.show = show;
entry->file.data = data;
entry->dev = dev;
debugfs_create_file(name, 0444, dev->debugfs_root, entry,
&drm_debugfs_entry_fops);
}
EXPORT_SYMBOL(drm_debugfs_add_file);
/**
* drm_debugfs_add_files - Add an array of files to the DRM device debugfs file list
* @dev: drm device for the ioctl
* @files: The array of files to create
* @count: The number of files given
*
* Add a given set of debugfs files represented by an array of
* &struct drm_debugfs_info in the DRM device debugfs file list.
*/
void drm_debugfs_add_files(struct drm_device *dev, const struct drm_debugfs_info *files, int count)
{
int i;
for (i = 0; i < count; i++)
drm_debugfs_add_file(dev, files[i].name, files[i].show, files[i].data);
}
EXPORT_SYMBOL(drm_debugfs_add_files);
static int connector_show(struct seq_file *m, void *data)
{
struct drm_connector *connector = m->private;
seq_printf(m, "%s\n", drm_get_connector_force_name(connector->force));
return 0;
}
static int connector_open(struct inode *inode, struct file *file)
{
struct drm_connector *dev = inode->i_private;
return single_open(file, connector_show, dev);
}
static ssize_t connector_write(struct file *file, const char __user *ubuf,
size_t len, loff_t *offp)
{
struct seq_file *m = file->private_data;
struct drm_connector *connector = m->private;
char buf[12];
if (len > sizeof(buf) - 1)
return -EINVAL;
if (copy_from_user(buf, ubuf, len))
return -EFAULT;
buf[len] = '\0';
if (sysfs_streq(buf, "on"))
connector->force = DRM_FORCE_ON;
else if (sysfs_streq(buf, "digital"))
connector->force = DRM_FORCE_ON_DIGITAL;
else if (sysfs_streq(buf, "off"))
connector->force = DRM_FORCE_OFF;
else if (sysfs_streq(buf, "unspecified"))
connector->force = DRM_FORCE_UNSPECIFIED;
else
return -EINVAL;
return len;
}
static int edid_show(struct seq_file *m, void *data)
{
return drm_edid_override_show(m->private, m);
}
static int edid_open(struct inode *inode, struct file *file)
{
struct drm_connector *dev = inode->i_private;
return single_open(file, edid_show, dev);
}
static ssize_t edid_write(struct file *file, const char __user *ubuf,
size_t len, loff_t *offp)
{
struct seq_file *m = file->private_data;
struct drm_connector *connector = m->private;
char *buf;
int ret;
buf = memdup_user(ubuf, len);
if (IS_ERR(buf))
return PTR_ERR(buf);
if (len == 5 && !strncmp(buf, "reset", 5))
ret = drm_edid_override_reset(connector);
else
ret = drm_edid_override_set(connector, buf, len);
kfree(buf);
return ret ? ret : len;
}
/*
* Returns the min and max vrr vfreq through the connector's debugfs file.
* Example usage: cat /sys/kernel/debug/dri/0/DP-1/vrr_range
*/
static int vrr_range_show(struct seq_file *m, void *data)
{
struct drm_connector *connector = m->private;
if (connector->status != connector_status_connected)
return -ENODEV;
seq_printf(m, "Min: %u\n", connector->display_info.monitor_range.min_vfreq);
seq_printf(m, "Max: %u\n", connector->display_info.monitor_range.max_vfreq);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(vrr_range);
/*
* Returns Connector's max supported bpc through debugfs file.
* Example usage: cat /sys/kernel/debug/dri/0/DP-1/output_bpc
*/
static int output_bpc_show(struct seq_file *m, void *data)
{
struct drm_connector *connector = m->private;
if (connector->status != connector_status_connected)
return -ENODEV;
seq_printf(m, "Maximum: %u\n", connector->display_info.bpc);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(output_bpc);
static const struct file_operations drm_edid_fops = {
.owner = THIS_MODULE,
.open = edid_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = edid_write
};
static const struct file_operations drm_connector_fops = {
.owner = THIS_MODULE,
.open = connector_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = connector_write
};
static ssize_t
audio_infoframe_read(struct file *filp, char __user *ubuf, size_t count, loff_t *ppos)
{
struct drm_connector_hdmi_infoframe *infoframe;
struct drm_connector *connector;
union hdmi_infoframe *frame;
u8 buf[HDMI_INFOFRAME_SIZE(AUDIO)];
ssize_t len = 0;
connector = filp->private_data;
mutex_lock(&connector->hdmi.infoframes.lock);
infoframe = &connector->hdmi.infoframes.audio;
if (!infoframe->set)
goto out;
frame = &infoframe->data;
len = hdmi_infoframe_pack(frame, buf, sizeof(buf));
if (len < 0)
goto out;
len = simple_read_from_buffer(ubuf, count, ppos, buf, len);
out:
mutex_unlock(&connector->hdmi.infoframes.lock);
return len;
}
static const struct file_operations audio_infoframe_fops = {
.owner = THIS_MODULE,
.open = simple_open,
.read = audio_infoframe_read,
};
static int create_hdmi_audio_infoframe_file(struct drm_connector *connector,
struct dentry *parent)
{
struct dentry *file;
file = debugfs_create_file("audio", 0400, parent, connector, &audio_infoframe_fops);
if (IS_ERR(file))
return PTR_ERR(file);
return 0;
}
#define DEFINE_INFOFRAME_FILE(_f) \
static ssize_t _f##_read_infoframe(struct file *filp, \
char __user *ubuf, \
size_t count, \
loff_t *ppos) \
{ \
struct drm_connector_hdmi_infoframe *infoframe; \
struct drm_connector_state *conn_state; \
struct drm_connector *connector; \
union hdmi_infoframe *frame; \
struct drm_device *dev; \
u8 buf[HDMI_INFOFRAME_SIZE(MAX)]; \
ssize_t len = 0; \
\
connector = filp->private_data; \
dev = connector->dev; \
\
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); \
\
conn_state = connector->state; \
infoframe = &conn_state->hdmi.infoframes._f; \
if (!infoframe->set) \
goto out; \
\
frame = &infoframe->data; \
len = hdmi_infoframe_pack(frame, buf, sizeof(buf)); \
if (len < 0) \
goto out; \
\
len = simple_read_from_buffer(ubuf, count, ppos, buf, len); \
\
out: \
drm_modeset_unlock(&dev->mode_config.connection_mutex); \
return len; \
} \
\
static const struct file_operations _f##_infoframe_fops = { \
.owner = THIS_MODULE, \
.open = simple_open, \
.read = _f##_read_infoframe, \
}; \
\
static int create_hdmi_## _f ## _infoframe_file(struct drm_connector *connector, \
struct dentry *parent) \
{ \
struct dentry *file; \
\
file = debugfs_create_file(#_f, 0400, parent, connector, &_f ## _infoframe_fops); \
if (IS_ERR(file)) \
return PTR_ERR(file); \
\
return 0; \
}
DEFINE_INFOFRAME_FILE(avi);
DEFINE_INFOFRAME_FILE(hdmi);
DEFINE_INFOFRAME_FILE(hdr_drm);
DEFINE_INFOFRAME_FILE(spd);
static int create_hdmi_infoframe_files(struct drm_connector *connector,
struct dentry *parent)
{
int ret;
ret = create_hdmi_audio_infoframe_file(connector, parent);
if (ret)
return ret;
ret = create_hdmi_avi_infoframe_file(connector, parent);
if (ret)
return ret;
ret = create_hdmi_hdmi_infoframe_file(connector, parent);
if (ret)
return ret;
ret = create_hdmi_hdr_drm_infoframe_file(connector, parent);
if (ret)
return ret;
ret = create_hdmi_spd_infoframe_file(connector, parent);
if (ret)
return ret;
return 0;
}
static void hdmi_debugfs_add(struct drm_connector *connector)
{
struct dentry *dir;
if (!(connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
connector->connector_type == DRM_MODE_CONNECTOR_HDMIB))
return;
dir = debugfs_create_dir("infoframes", connector->debugfs_entry);
if (IS_ERR(dir))
return;
create_hdmi_infoframe_files(connector, dir);
}
void drm_debugfs_connector_add(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct dentry *root;
if (!dev->debugfs_root)
return;
root = debugfs_create_dir(connector->name, dev->debugfs_root);
connector->debugfs_entry = root;
/* force */
debugfs_create_file("force", 0644, root, connector,
&drm_connector_fops);
/* edid */
debugfs_create_file("edid_override", 0644, root, connector,
&drm_edid_fops);
/* vrr range */
debugfs_create_file("vrr_range", 0444, root, connector,
&vrr_range_fops);
/* max bpc */
debugfs_create_file("output_bpc", 0444, root, connector,
&output_bpc_fops);
hdmi_debugfs_add(connector);
if (connector->funcs->debugfs_init)
connector->funcs->debugfs_init(connector, root);
}
void drm_debugfs_connector_remove(struct drm_connector *connector)
{
if (!connector->debugfs_entry)
return;
debugfs_remove_recursive(connector->debugfs_entry);
connector->debugfs_entry = NULL;
}
void drm_debugfs_crtc_add(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct dentry *root;
char *name;
name = kasprintf(GFP_KERNEL, "crtc-%d", crtc->index);
if (!name)
return;
root = debugfs_create_dir(name, dev->debugfs_root);
kfree(name);
crtc->debugfs_entry = root;
drm_debugfs_crtc_crc_add(crtc);
}
void drm_debugfs_crtc_remove(struct drm_crtc *crtc)
{
debugfs_remove_recursive(crtc->debugfs_entry);
crtc->debugfs_entry = NULL;
}
static int bridges_show(struct seq_file *m, void *data)
{
struct drm_encoder *encoder = m->private;
struct drm_printer p = drm_seq_file_printer(m);
struct drm_bridge *bridge;
unsigned int idx = 0;
drm_for_each_bridge_in_chain(encoder, bridge) {
drm_printf(&p, "bridge[%d]: %ps\n", idx++, bridge->funcs);
drm_printf(&p, "\ttype: [%d] %s\n",
bridge->type,
drm_get_connector_type_name(bridge->type));
if (bridge->of_node)
drm_printf(&p, "\tOF: %pOFfc\n", bridge->of_node);
drm_printf(&p, "\tops: [0x%x]", bridge->ops);
if (bridge->ops & DRM_BRIDGE_OP_DETECT)
drm_puts(&p, " detect");
if (bridge->ops & DRM_BRIDGE_OP_EDID)
drm_puts(&p, " edid");
if (bridge->ops & DRM_BRIDGE_OP_HPD)
drm_puts(&p, " hpd");
if (bridge->ops & DRM_BRIDGE_OP_MODES)
drm_puts(&p, " modes");
if (bridge->ops & DRM_BRIDGE_OP_HDMI)
drm_puts(&p, " hdmi");
drm_puts(&p, "\n");
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(bridges);
void drm_debugfs_encoder_add(struct drm_encoder *encoder)
{
struct drm_minor *minor = encoder->dev->primary;
struct dentry *root;
char *name;
name = kasprintf(GFP_KERNEL, "encoder-%d", encoder->index);
if (!name)
return;
root = debugfs_create_dir(name, minor->debugfs_root);
kfree(name);
encoder->debugfs_entry = root;
/* bridges list */
debugfs_create_file("bridges", 0444, root, encoder,
&bridges_fops);
if (encoder->funcs && encoder->funcs->debugfs_init)
encoder->funcs->debugfs_init(encoder, root);
}
void drm_debugfs_encoder_remove(struct drm_encoder *encoder)
{
debugfs_remove_recursive(encoder->debugfs_entry);
encoder->debugfs_entry = NULL;
}
|