Commit | Line | Data |
---|---|---|
0650fd58 | 1 | |
1da177e4 LT |
2 | /* |
3 | * drm_sysfs.c - Modifications to drm_sysfs_class.c to support | |
4 | * extra sysfs attribute from DRM. Normal drm_sysfs_class | |
5 | * does not allow adding attributes. | |
6 | * | |
7 | * Copyright (c) 2004 Jon Smirl <jonsmirl@gmail.com> | |
8 | * Copyright (c) 2003-2004 Greg Kroah-Hartman <greg@kroah.com> | |
9 | * Copyright (c) 2003-2004 IBM Corp. | |
10 | * | |
11 | * This file is released under the GPLv2 | |
12 | * | |
13 | */ | |
14 | ||
1da177e4 LT |
15 | #include <linux/device.h> |
16 | #include <linux/kdev_t.h> | |
5a0e3ad6 | 17 | #include <linux/gfp.h> |
1da177e4 | 18 | #include <linux/err.h> |
2d1a8a48 | 19 | #include <linux/export.h> |
1da177e4 | 20 | |
760285e7 DH |
21 | #include <drm/drm_sysfs.h> |
22 | #include <drm/drm_core.h> | |
23 | #include <drm/drmP.h> | |
1da177e4 | 24 | |
2c14f28b | 25 | #define to_drm_minor(d) container_of(d, struct drm_minor, kdev) |
f453ba04 | 26 | #define to_drm_connector(d) container_of(d, struct drm_connector, kdev) |
e8b962b6 | 27 | |
08e4d534 TH |
28 | static struct device_type drm_sysfs_device_minor = { |
29 | .name = "drm_minor" | |
30 | }; | |
31 | ||
e8b962b6 | 32 | /** |
cf4b91f2 | 33 | * __drm_class_suspend - internal DRM class suspend routine |
e8b962b6 JB |
34 | * @dev: Linux device to suspend |
35 | * @state: power state to enter | |
36 | * | |
37 | * Just figures out what the actual struct drm_device associated with | |
38 | * @dev is and calls its suspend hook, if present. | |
39 | */ | |
cf4b91f2 | 40 | static int __drm_class_suspend(struct device *dev, pm_message_t state) |
e8b962b6 | 41 | { |
08e4d534 TH |
42 | if (dev->type == &drm_sysfs_device_minor) { |
43 | struct drm_minor *drm_minor = to_drm_minor(dev); | |
44 | struct drm_device *drm_dev = drm_minor->dev; | |
45 | ||
46 | if (drm_minor->type == DRM_MINOR_LEGACY && | |
47 | !drm_core_check_feature(drm_dev, DRIVER_MODESET) && | |
48 | drm_dev->driver->suspend) | |
49 | return drm_dev->driver->suspend(drm_dev, state); | |
50 | } | |
e8b962b6 JB |
51 | return 0; |
52 | } | |
53 | ||
cf4b91f2 SK |
54 | /** |
55 | * drm_class_suspend - internal DRM class suspend hook. Simply calls | |
56 | * __drm_class_suspend() with the correct pm state. | |
57 | * @dev: Linux device to suspend | |
58 | */ | |
59 | static int drm_class_suspend(struct device *dev) | |
60 | { | |
61 | return __drm_class_suspend(dev, PMSG_SUSPEND); | |
62 | } | |
63 | ||
64 | /** | |
65 | * drm_class_freeze - internal DRM class freeze hook. Simply calls | |
66 | * __drm_class_suspend() with the correct pm state. | |
67 | * @dev: Linux device to freeze | |
68 | */ | |
69 | static int drm_class_freeze(struct device *dev) | |
70 | { | |
71 | return __drm_class_suspend(dev, PMSG_FREEZE); | |
72 | } | |
73 | ||
e8b962b6 | 74 | /** |
08e4d534 | 75 | * drm_class_resume - DRM class resume hook |
e8b962b6 JB |
76 | * @dev: Linux device to resume |
77 | * | |
78 | * Just figures out what the actual struct drm_device associated with | |
79 | * @dev is and calls its resume hook, if present. | |
80 | */ | |
08e4d534 | 81 | static int drm_class_resume(struct device *dev) |
e8b962b6 | 82 | { |
08e4d534 TH |
83 | if (dev->type == &drm_sysfs_device_minor) { |
84 | struct drm_minor *drm_minor = to_drm_minor(dev); | |
85 | struct drm_device *drm_dev = drm_minor->dev; | |
86 | ||
87 | if (drm_minor->type == DRM_MINOR_LEGACY && | |
88 | !drm_core_check_feature(drm_dev, DRIVER_MODESET) && | |
89 | drm_dev->driver->resume) | |
90 | return drm_dev->driver->resume(drm_dev); | |
91 | } | |
e8b962b6 JB |
92 | return 0; |
93 | } | |
94 | ||
cf4b91f2 SK |
95 | static const struct dev_pm_ops drm_class_dev_pm_ops = { |
96 | .suspend = drm_class_suspend, | |
97 | .resume = drm_class_resume, | |
98 | .freeze = drm_class_freeze, | |
99 | }; | |
100 | ||
2c9ede55 | 101 | static char *drm_devnode(struct device *dev, umode_t *mode) |
02200d06 KS |
102 | { |
103 | return kasprintf(GFP_KERNEL, "dri/%s", dev_name(dev)); | |
104 | } | |
105 | ||
0933e2d9 AK |
106 | static CLASS_ATTR_STRING(version, S_IRUGO, |
107 | CORE_NAME " " | |
108 | __stringify(CORE_MAJOR) "." | |
109 | __stringify(CORE_MINOR) "." | |
110 | __stringify(CORE_PATCHLEVEL) " " | |
111 | CORE_DATE); | |
1da177e4 LT |
112 | |
113 | /** | |
114 | * drm_sysfs_create - create a struct drm_sysfs_class structure | |
115 | * @owner: pointer to the module that is to "own" this struct drm_sysfs_class | |
116 | * @name: pointer to a string for the name of this class. | |
117 | * | |
e8b962b6 | 118 | * This is used to create DRM class pointer that can then be used |
1da177e4 LT |
119 | * in calls to drm_sysfs_device_add(). |
120 | * | |
121 | * Note, the pointer created here is to be destroyed when finished by making a | |
122 | * call to drm_sysfs_destroy(). | |
123 | */ | |
0650fd58 | 124 | struct class *drm_sysfs_create(struct module *owner, char *name) |
1da177e4 | 125 | { |
0650fd58 | 126 | struct class *class; |
24f73c92 | 127 | int err; |
0650fd58 GKH |
128 | |
129 | class = class_create(owner, name); | |
94f060bd AM |
130 | if (IS_ERR(class)) { |
131 | err = PTR_ERR(class); | |
24f73c92 JG |
132 | goto err_out; |
133 | } | |
134 | ||
cf4b91f2 | 135 | class->pm = &drm_class_dev_pm_ops; |
e8b962b6 | 136 | |
0933e2d9 | 137 | err = class_create_file(class, &class_attr_version.attr); |
24f73c92 JG |
138 | if (err) |
139 | goto err_out_class; | |
0650fd58 | 140 | |
e454cea2 | 141 | class->devnode = drm_devnode; |
02200d06 | 142 | |
0650fd58 | 143 | return class; |
24f73c92 JG |
144 | |
145 | err_out_class: | |
146 | class_destroy(class); | |
147 | err_out: | |
148 | return ERR_PTR(err); | |
1da177e4 LT |
149 | } |
150 | ||
151 | /** | |
e8b962b6 | 152 | * drm_sysfs_destroy - destroys DRM class |
1da177e4 | 153 | * |
e8b962b6 | 154 | * Destroy the DRM device class. |
1da177e4 | 155 | */ |
e8b962b6 | 156 | void drm_sysfs_destroy(void) |
1da177e4 | 157 | { |
e8b962b6 | 158 | if ((drm_class == NULL) || (IS_ERR(drm_class))) |
1da177e4 | 159 | return; |
0933e2d9 | 160 | class_remove_file(drm_class, &class_attr_version.attr); |
e8b962b6 | 161 | class_destroy(drm_class); |
49099c49 | 162 | drm_class = NULL; |
1da177e4 LT |
163 | } |
164 | ||
e8b962b6 JB |
165 | /** |
166 | * drm_sysfs_device_release - do nothing | |
167 | * @dev: Linux device | |
168 | * | |
169 | * Normally, this would free the DRM device associated with @dev, along | |
170 | * with cleaning up any other stuff. But we do that in the DRM core, so | |
171 | * this function can just return and hope that the core does its job. | |
172 | */ | |
173 | static void drm_sysfs_device_release(struct device *dev) | |
174 | { | |
77d26dc9 | 175 | memset(dev, 0, sizeof(struct device)); |
e8b962b6 JB |
176 | return; |
177 | } | |
178 | ||
f453ba04 DA |
179 | /* |
180 | * Connector properties | |
181 | */ | |
182 | static ssize_t status_show(struct device *device, | |
183 | struct device_attribute *attr, | |
184 | char *buf) | |
185 | { | |
186 | struct drm_connector *connector = to_drm_connector(device); | |
187 | enum drm_connector_status status; | |
007c80a5 CW |
188 | int ret; |
189 | ||
190 | ret = mutex_lock_interruptible(&connector->dev->mode_config.mutex); | |
191 | if (ret) | |
192 | return ret; | |
f453ba04 | 193 | |
7b334fcb | 194 | status = connector->funcs->detect(connector, true); |
007c80a5 CW |
195 | mutex_unlock(&connector->dev->mode_config.mutex); |
196 | ||
75185c92 | 197 | return snprintf(buf, PAGE_SIZE, "%s\n", |
f453ba04 DA |
198 | drm_get_connector_status_name(status)); |
199 | } | |
200 | ||
201 | static ssize_t dpms_show(struct device *device, | |
202 | struct device_attribute *attr, | |
203 | char *buf) | |
204 | { | |
205 | struct drm_connector *connector = to_drm_connector(device); | |
206 | struct drm_device *dev = connector->dev; | |
207 | uint64_t dpms_status; | |
208 | int ret; | |
209 | ||
58495563 | 210 | ret = drm_object_property_get_value(&connector->base, |
f453ba04 DA |
211 | dev->mode_config.dpms_property, |
212 | &dpms_status); | |
213 | if (ret) | |
214 | return 0; | |
215 | ||
75185c92 | 216 | return snprintf(buf, PAGE_SIZE, "%s\n", |
f453ba04 DA |
217 | drm_get_dpms_name((int)dpms_status)); |
218 | } | |
219 | ||
220 | static ssize_t enabled_show(struct device *device, | |
221 | struct device_attribute *attr, | |
222 | char *buf) | |
223 | { | |
224 | struct drm_connector *connector = to_drm_connector(device); | |
225 | ||
75185c92 | 226 | return snprintf(buf, PAGE_SIZE, "%s\n", connector->encoder ? "enabled" : |
f453ba04 DA |
227 | "disabled"); |
228 | } | |
229 | ||
2c3c8bea CW |
230 | static ssize_t edid_show(struct file *filp, struct kobject *kobj, |
231 | struct bin_attribute *attr, char *buf, loff_t off, | |
232 | size_t count) | |
f453ba04 DA |
233 | { |
234 | struct device *connector_dev = container_of(kobj, struct device, kobj); | |
235 | struct drm_connector *connector = to_drm_connector(connector_dev); | |
236 | unsigned char *edid; | |
237 | size_t size; | |
238 | ||
239 | if (!connector->edid_blob_ptr) | |
240 | return 0; | |
241 | ||
242 | edid = connector->edid_blob_ptr->data; | |
243 | size = connector->edid_blob_ptr->length; | |
244 | if (!edid) | |
245 | return 0; | |
246 | ||
247 | if (off >= size) | |
248 | return 0; | |
249 | ||
250 | if (off + count > size) | |
251 | count = size - off; | |
252 | memcpy(buf, edid + off, count); | |
253 | ||
254 | return count; | |
255 | } | |
256 | ||
257 | static ssize_t modes_show(struct device *device, | |
258 | struct device_attribute *attr, | |
259 | char *buf) | |
260 | { | |
261 | struct drm_connector *connector = to_drm_connector(device); | |
262 | struct drm_display_mode *mode; | |
263 | int written = 0; | |
264 | ||
265 | list_for_each_entry(mode, &connector->modes, head) { | |
266 | written += snprintf(buf + written, PAGE_SIZE - written, "%s\n", | |
267 | mode->name); | |
268 | } | |
269 | ||
270 | return written; | |
271 | } | |
272 | ||
273 | static ssize_t subconnector_show(struct device *device, | |
274 | struct device_attribute *attr, | |
275 | char *buf) | |
276 | { | |
277 | struct drm_connector *connector = to_drm_connector(device); | |
278 | struct drm_device *dev = connector->dev; | |
279 | struct drm_property *prop = NULL; | |
280 | uint64_t subconnector; | |
281 | int is_tv = 0; | |
282 | int ret; | |
283 | ||
284 | switch (connector->connector_type) { | |
285 | case DRM_MODE_CONNECTOR_DVII: | |
286 | prop = dev->mode_config.dvi_i_subconnector_property; | |
287 | break; | |
288 | case DRM_MODE_CONNECTOR_Composite: | |
289 | case DRM_MODE_CONNECTOR_SVIDEO: | |
290 | case DRM_MODE_CONNECTOR_Component: | |
74bd3c26 | 291 | case DRM_MODE_CONNECTOR_TV: |
f453ba04 DA |
292 | prop = dev->mode_config.tv_subconnector_property; |
293 | is_tv = 1; | |
294 | break; | |
295 | default: | |
296 | DRM_ERROR("Wrong connector type for this property\n"); | |
297 | return 0; | |
298 | } | |
299 | ||
300 | if (!prop) { | |
301 | DRM_ERROR("Unable to find subconnector property\n"); | |
302 | return 0; | |
303 | } | |
304 | ||
58495563 | 305 | ret = drm_object_property_get_value(&connector->base, prop, &subconnector); |
f453ba04 DA |
306 | if (ret) |
307 | return 0; | |
308 | ||
309 | return snprintf(buf, PAGE_SIZE, "%s", is_tv ? | |
310 | drm_get_tv_subconnector_name((int)subconnector) : | |
311 | drm_get_dvi_i_subconnector_name((int)subconnector)); | |
312 | } | |
313 | ||
314 | static ssize_t select_subconnector_show(struct device *device, | |
315 | struct device_attribute *attr, | |
316 | char *buf) | |
317 | { | |
318 | struct drm_connector *connector = to_drm_connector(device); | |
319 | struct drm_device *dev = connector->dev; | |
320 | struct drm_property *prop = NULL; | |
321 | uint64_t subconnector; | |
322 | int is_tv = 0; | |
323 | int ret; | |
324 | ||
325 | switch (connector->connector_type) { | |
326 | case DRM_MODE_CONNECTOR_DVII: | |
327 | prop = dev->mode_config.dvi_i_select_subconnector_property; | |
328 | break; | |
329 | case DRM_MODE_CONNECTOR_Composite: | |
330 | case DRM_MODE_CONNECTOR_SVIDEO: | |
331 | case DRM_MODE_CONNECTOR_Component: | |
74bd3c26 | 332 | case DRM_MODE_CONNECTOR_TV: |
f453ba04 DA |
333 | prop = dev->mode_config.tv_select_subconnector_property; |
334 | is_tv = 1; | |
335 | break; | |
336 | default: | |
337 | DRM_ERROR("Wrong connector type for this property\n"); | |
338 | return 0; | |
339 | } | |
340 | ||
341 | if (!prop) { | |
342 | DRM_ERROR("Unable to find select subconnector property\n"); | |
343 | return 0; | |
344 | } | |
345 | ||
58495563 | 346 | ret = drm_object_property_get_value(&connector->base, prop, &subconnector); |
f453ba04 DA |
347 | if (ret) |
348 | return 0; | |
349 | ||
350 | return snprintf(buf, PAGE_SIZE, "%s", is_tv ? | |
351 | drm_get_tv_select_name((int)subconnector) : | |
352 | drm_get_dvi_i_select_name((int)subconnector)); | |
353 | } | |
354 | ||
355 | static struct device_attribute connector_attrs[] = { | |
356 | __ATTR_RO(status), | |
357 | __ATTR_RO(enabled), | |
358 | __ATTR_RO(dpms), | |
359 | __ATTR_RO(modes), | |
360 | }; | |
361 | ||
362 | /* These attributes are for both DVI-I connectors and all types of tv-out. */ | |
363 | static struct device_attribute connector_attrs_opt1[] = { | |
364 | __ATTR_RO(subconnector), | |
365 | __ATTR_RO(select_subconnector), | |
366 | }; | |
367 | ||
368 | static struct bin_attribute edid_attr = { | |
369 | .attr.name = "edid", | |
e36ebaf4 | 370 | .attr.mode = 0444, |
7466f4cc | 371 | .size = 0, |
f453ba04 DA |
372 | .read = edid_show, |
373 | }; | |
374 | ||
375 | /** | |
3b02ab88 | 376 | * drm_sysfs_connector_add - add a connector to sysfs |
f453ba04 DA |
377 | * @connector: connector to add |
378 | * | |
3b02ab88 | 379 | * Create a connector device in sysfs, along with its associated connector |
f453ba04 DA |
380 | * properties (so far, connection status, dpms, mode list & edid) and |
381 | * generate a hotplug event so userspace knows there's a new connector | |
382 | * available. | |
383 | * | |
384 | * Note: | |
3b02ab88 LP |
385 | * This routine should only be called *once* for each registered connector. |
386 | * A second call for an already registered connector will trigger the BUG_ON | |
f453ba04 DA |
387 | * below. |
388 | */ | |
389 | int drm_sysfs_connector_add(struct drm_connector *connector) | |
390 | { | |
391 | struct drm_device *dev = connector->dev; | |
a1c4560d DC |
392 | int attr_cnt = 0; |
393 | int opt_cnt = 0; | |
394 | int i; | |
4a1b0714 | 395 | int ret; |
f453ba04 DA |
396 | |
397 | /* We shouldn't get called more than once for the same connector */ | |
398 | BUG_ON(device_is_registered(&connector->kdev)); | |
399 | ||
400 | connector->kdev.parent = &dev->primary->kdev; | |
401 | connector->kdev.class = drm_class; | |
402 | connector->kdev.release = drm_sysfs_device_release; | |
403 | ||
404 | DRM_DEBUG("adding \"%s\" to sysfs\n", | |
405 | drm_get_connector_name(connector)); | |
406 | ||
2ead054c KS |
407 | dev_set_name(&connector->kdev, "card%d-%s", |
408 | dev->primary->index, drm_get_connector_name(connector)); | |
f453ba04 DA |
409 | ret = device_register(&connector->kdev); |
410 | ||
411 | if (ret) { | |
412 | DRM_ERROR("failed to register connector device: %d\n", ret); | |
413 | goto out; | |
414 | } | |
415 | ||
416 | /* Standard attributes */ | |
417 | ||
a1c4560d DC |
418 | for (attr_cnt = 0; attr_cnt < ARRAY_SIZE(connector_attrs); attr_cnt++) { |
419 | ret = device_create_file(&connector->kdev, &connector_attrs[attr_cnt]); | |
f453ba04 DA |
420 | if (ret) |
421 | goto err_out_files; | |
422 | } | |
423 | ||
424 | /* Optional attributes */ | |
425 | /* | |
426 | * In the long run it maybe a good idea to make one set of | |
427 | * optionals per connector type. | |
428 | */ | |
429 | switch (connector->connector_type) { | |
430 | case DRM_MODE_CONNECTOR_DVII: | |
431 | case DRM_MODE_CONNECTOR_Composite: | |
432 | case DRM_MODE_CONNECTOR_SVIDEO: | |
433 | case DRM_MODE_CONNECTOR_Component: | |
74bd3c26 | 434 | case DRM_MODE_CONNECTOR_TV: |
a1c4560d DC |
435 | for (opt_cnt = 0; opt_cnt < ARRAY_SIZE(connector_attrs_opt1); opt_cnt++) { |
436 | ret = device_create_file(&connector->kdev, &connector_attrs_opt1[opt_cnt]); | |
f453ba04 DA |
437 | if (ret) |
438 | goto err_out_files; | |
439 | } | |
440 | break; | |
441 | default: | |
442 | break; | |
443 | } | |
444 | ||
445 | ret = sysfs_create_bin_file(&connector->kdev.kobj, &edid_attr); | |
446 | if (ret) | |
447 | goto err_out_files; | |
448 | ||
449 | /* Let userspace know we have a new connector */ | |
450 | drm_sysfs_hotplug_event(dev); | |
451 | ||
452 | return 0; | |
453 | ||
454 | err_out_files: | |
a1c4560d DC |
455 | for (i = 0; i < opt_cnt; i++) |
456 | device_remove_file(&connector->kdev, &connector_attrs_opt1[i]); | |
457 | for (i = 0; i < attr_cnt; i++) | |
458 | device_remove_file(&connector->kdev, &connector_attrs[i]); | |
f453ba04 DA |
459 | device_unregister(&connector->kdev); |
460 | ||
461 | out: | |
462 | return ret; | |
463 | } | |
464 | EXPORT_SYMBOL(drm_sysfs_connector_add); | |
465 | ||
466 | /** | |
467 | * drm_sysfs_connector_remove - remove an connector device from sysfs | |
468 | * @connector: connector to remove | |
469 | * | |
470 | * Remove @connector and its associated attributes from sysfs. Note that | |
471 | * the device model core will take care of sending the "remove" uevent | |
472 | * at this time, so we don't need to do it. | |
473 | * | |
474 | * Note: | |
475 | * This routine should only be called if the connector was previously | |
476 | * successfully registered. If @connector hasn't been registered yet, | |
477 | * you'll likely see a panic somewhere deep in sysfs code when called. | |
478 | */ | |
479 | void drm_sysfs_connector_remove(struct drm_connector *connector) | |
480 | { | |
481 | int i; | |
482 | ||
1828fe6c DA |
483 | if (!connector->kdev.parent) |
484 | return; | |
f453ba04 DA |
485 | DRM_DEBUG("removing \"%s\" from sysfs\n", |
486 | drm_get_connector_name(connector)); | |
487 | ||
488 | for (i = 0; i < ARRAY_SIZE(connector_attrs); i++) | |
489 | device_remove_file(&connector->kdev, &connector_attrs[i]); | |
490 | sysfs_remove_bin_file(&connector->kdev.kobj, &edid_attr); | |
491 | device_unregister(&connector->kdev); | |
1828fe6c | 492 | connector->kdev.parent = NULL; |
f453ba04 DA |
493 | } |
494 | EXPORT_SYMBOL(drm_sysfs_connector_remove); | |
495 | ||
496 | /** | |
497 | * drm_sysfs_hotplug_event - generate a DRM uevent | |
498 | * @dev: DRM device | |
499 | * | |
500 | * Send a uevent for the DRM device specified by @dev. Currently we only | |
501 | * set HOTPLUG=1 in the uevent environment, but this could be expanded to | |
502 | * deal with other types of events. | |
503 | */ | |
504 | void drm_sysfs_hotplug_event(struct drm_device *dev) | |
505 | { | |
506 | char *event_string = "HOTPLUG=1"; | |
507 | char *envp[] = { event_string, NULL }; | |
508 | ||
509 | DRM_DEBUG("generating hotplug event\n"); | |
510 | ||
511 | kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, envp); | |
512 | } | |
5ca58282 | 513 | EXPORT_SYMBOL(drm_sysfs_hotplug_event); |
f453ba04 | 514 | |
1da177e4 LT |
515 | /** |
516 | * drm_sysfs_device_add - adds a class device to sysfs for a character driver | |
e8b962b6 JB |
517 | * @dev: DRM device to be added |
518 | * @head: DRM head in question | |
1da177e4 | 519 | * |
e8b962b6 JB |
520 | * Add a DRM device to the DRM's device model class. We use @dev's PCI device |
521 | * as the parent for the Linux device, and make sure it has a file containing | |
522 | * the driver we're using (for userspace compatibility). | |
1da177e4 | 523 | */ |
2c14f28b | 524 | int drm_sysfs_device_add(struct drm_minor *minor) |
1da177e4 | 525 | { |
e8b962b6 | 526 | int err; |
2c14f28b | 527 | char *minor_str; |
e8b962b6 | 528 | |
dcdb1674 JC |
529 | minor->kdev.parent = minor->dev->dev; |
530 | ||
2c14f28b DA |
531 | minor->kdev.class = drm_class; |
532 | minor->kdev.release = drm_sysfs_device_release; | |
533 | minor->kdev.devt = minor->device; | |
08e4d534 | 534 | minor->kdev.type = &drm_sysfs_device_minor; |
f453ba04 DA |
535 | if (minor->type == DRM_MINOR_CONTROL) |
536 | minor_str = "controlD%d"; | |
537 | else if (minor->type == DRM_MINOR_RENDER) | |
538 | minor_str = "renderD%d"; | |
539 | else | |
540 | minor_str = "card%d"; | |
e8b962b6 | 541 | |
8f4bbd9f | 542 | dev_set_name(&minor->kdev, minor_str, minor->index); |
2c14f28b DA |
543 | |
544 | err = device_register(&minor->kdev); | |
e8b962b6 JB |
545 | if (err) { |
546 | DRM_ERROR("device add failed: %d\n", err); | |
24f73c92 JG |
547 | goto err_out; |
548 | } | |
1da177e4 | 549 | |
e8b962b6 | 550 | return 0; |
24f73c92 | 551 | |
24f73c92 | 552 | err_out: |
e8b962b6 | 553 | return err; |
1da177e4 LT |
554 | } |
555 | ||
556 | /** | |
e8b962b6 JB |
557 | * drm_sysfs_device_remove - remove DRM device |
558 | * @dev: DRM device to remove | |
1da177e4 LT |
559 | * |
560 | * This call unregisters and cleans up a class device that was created with a | |
561 | * call to drm_sysfs_device_add() | |
562 | */ | |
2c14f28b | 563 | void drm_sysfs_device_remove(struct drm_minor *minor) |
1da177e4 | 564 | { |
1828fe6c DA |
565 | if (minor->kdev.parent) |
566 | device_unregister(&minor->kdev); | |
567 | minor->kdev.parent = NULL; | |
1da177e4 | 568 | } |
327c225b TH |
569 | |
570 | ||
571 | /** | |
572 | * drm_class_device_register - Register a struct device in the drm class. | |
573 | * | |
574 | * @dev: pointer to struct device to register. | |
575 | * | |
576 | * @dev should have all relevant members pre-filled with the exception | |
577 | * of the class member. In particular, the device_type member must | |
578 | * be set. | |
579 | */ | |
580 | ||
581 | int drm_class_device_register(struct device *dev) | |
582 | { | |
49099c49 DA |
583 | if (!drm_class || IS_ERR(drm_class)) |
584 | return -ENOENT; | |
585 | ||
327c225b TH |
586 | dev->class = drm_class; |
587 | return device_register(dev); | |
588 | } | |
589 | EXPORT_SYMBOL_GPL(drm_class_device_register); | |
590 | ||
591 | void drm_class_device_unregister(struct device *dev) | |
592 | { | |
593 | return device_unregister(dev); | |
594 | } | |
595 | EXPORT_SYMBOL_GPL(drm_class_device_unregister); |