blob: 45ac8d6c92b7d1edb4483b39f49b796e039c9679 [file] [log] [blame]
Greg Kroah-Hartman0650fd52006-01-20 14:08:59 -08001
Linus Torvalds1da177e2005-04-16 15:20:36 -07002/*
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <linux/device.h>
16#include <linux/kdev_t.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090017#include <linux/gfp.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include <linux/err.h>
Paul Gortmaker2d1a8a42011-08-30 18:16:33 -040019#include <linux/export.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020
Thomas Hellstrom327c2252009-08-17 16:28:37 +020021#include "drm_sysfs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include "drm_core.h"
Dave Airlief2109732005-09-05 21:33:44 +100023#include "drmP.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070024
Dave Airlie2c14f282008-04-21 16:47:32 +100025#define to_drm_minor(d) container_of(d, struct drm_minor, kdev)
Dave Airlief453ba02008-11-07 14:05:41 -080026#define to_drm_connector(d) container_of(d, struct drm_connector, kdev)
Jesse Barnese8b962b2007-11-22 14:02:38 +100027
Thomas Hellstrom08e4d532009-08-20 19:02:31 +100028static struct device_type drm_sysfs_device_minor = {
29 .name = "drm_minor"
30};
31
Jesse Barnese8b962b2007-11-22 14:02:38 +100032/**
Thomas Hellstrom08e4d532009-08-20 19:02:31 +100033 * drm_class_suspend - DRM class suspend hook
Jesse Barnese8b962b2007-11-22 14:02:38 +100034 * @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 */
Thomas Hellstrom08e4d532009-08-20 19:02:31 +100040static int drm_class_suspend(struct device *dev, pm_message_t state)
Jesse Barnese8b962b2007-11-22 14:02:38 +100041{
Thomas Hellstrom08e4d532009-08-20 19:02:31 +100042 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;
Jesse Barnese8b962b2007-11-22 14:02:38 +100045
Thomas Hellstrom08e4d532009-08-20 19:02:31 +100046 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 }
Jesse Barnese8b962b2007-11-22 14:02:38 +100051 return 0;
52}
53
54/**
Thomas Hellstrom08e4d532009-08-20 19:02:31 +100055 * drm_class_resume - DRM class resume hook
Jesse Barnese8b962b2007-11-22 14:02:38 +100056 * @dev: Linux device to resume
57 *
58 * Just figures out what the actual struct drm_device associated with
59 * @dev is and calls its resume hook, if present.
60 */
Thomas Hellstrom08e4d532009-08-20 19:02:31 +100061static int drm_class_resume(struct device *dev)
Jesse Barnese8b962b2007-11-22 14:02:38 +100062{
Thomas Hellstrom08e4d532009-08-20 19:02:31 +100063 if (dev->type == &drm_sysfs_device_minor) {
64 struct drm_minor *drm_minor = to_drm_minor(dev);
65 struct drm_device *drm_dev = drm_minor->dev;
Jesse Barnese8b962b2007-11-22 14:02:38 +100066
Thomas Hellstrom08e4d532009-08-20 19:02:31 +100067 if (drm_minor->type == DRM_MINOR_LEGACY &&
68 !drm_core_check_feature(drm_dev, DRIVER_MODESET) &&
69 drm_dev->driver->resume)
70 return drm_dev->driver->resume(drm_dev);
71 }
Jesse Barnese8b962b2007-11-22 14:02:38 +100072 return 0;
73}
74
Al Viro2c9ede52011-07-23 20:24:48 -040075static char *drm_devnode(struct device *dev, umode_t *mode)
Kay Sievers02200d02009-04-30 15:23:42 +020076{
77 return kasprintf(GFP_KERNEL, "dri/%s", dev_name(dev));
78}
79
Andi Kleen0933e2d2010-01-05 12:48:09 +010080static CLASS_ATTR_STRING(version, S_IRUGO,
81 CORE_NAME " "
82 __stringify(CORE_MAJOR) "."
83 __stringify(CORE_MINOR) "."
84 __stringify(CORE_PATCHLEVEL) " "
85 CORE_DATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
87/**
88 * drm_sysfs_create - create a struct drm_sysfs_class structure
89 * @owner: pointer to the module that is to "own" this struct drm_sysfs_class
90 * @name: pointer to a string for the name of this class.
91 *
Jesse Barnese8b962b2007-11-22 14:02:38 +100092 * This is used to create DRM class pointer that can then be used
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 * in calls to drm_sysfs_device_add().
94 *
95 * Note, the pointer created here is to be destroyed when finished by making a
96 * call to drm_sysfs_destroy().
97 */
Greg Kroah-Hartman0650fd52006-01-20 14:08:59 -080098struct class *drm_sysfs_create(struct module *owner, char *name)
Linus Torvalds1da177e2005-04-16 15:20:36 -070099{
Greg Kroah-Hartman0650fd52006-01-20 14:08:59 -0800100 struct class *class;
Jeff Garzik24f73c92006-10-10 14:23:37 -0700101 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102
Greg Kroah-Hartman0650fd52006-01-20 14:08:59 -0800103 class = class_create(owner, name);
Akinobu Mita94f060b2006-12-09 10:49:47 +1100104 if (IS_ERR(class)) {
105 err = PTR_ERR(class);
Jeff Garzik24f73c92006-10-10 14:23:37 -0700106 goto err_out;
107 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108
Thomas Hellstrom08e4d532009-08-20 19:02:31 +1000109 class->suspend = drm_class_suspend;
110 class->resume = drm_class_resume;
Jesse Barnese8b962b2007-11-22 14:02:38 +1000111
Andi Kleen0933e2d2010-01-05 12:48:09 +0100112 err = class_create_file(class, &class_attr_version.attr);
Jeff Garzik24f73c92006-10-10 14:23:37 -0700113 if (err)
114 goto err_out_class;
115
Kay Sieverse454cea2009-09-18 23:01:12 +0200116 class->devnode = drm_devnode;
Kay Sievers02200d02009-04-30 15:23:42 +0200117
Greg Kroah-Hartman0650fd52006-01-20 14:08:59 -0800118 return class;
Jeff Garzik24f73c92006-10-10 14:23:37 -0700119
120err_out_class:
121 class_destroy(class);
122err_out:
123 return ERR_PTR(err);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124}
125
126/**
Jesse Barnese8b962b2007-11-22 14:02:38 +1000127 * drm_sysfs_destroy - destroys DRM class
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128 *
Jesse Barnese8b962b2007-11-22 14:02:38 +1000129 * Destroy the DRM device class.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 */
Jesse Barnese8b962b2007-11-22 14:02:38 +1000131void drm_sysfs_destroy(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132{
Jesse Barnese8b962b2007-11-22 14:02:38 +1000133 if ((drm_class == NULL) || (IS_ERR(drm_class)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 return;
Andi Kleen0933e2d2010-01-05 12:48:09 +0100135 class_remove_file(drm_class, &class_attr_version.attr);
Jesse Barnese8b962b2007-11-22 14:02:38 +1000136 class_destroy(drm_class);
Dave Airlie49099c42012-07-06 18:06:42 +0100137 drm_class = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138}
139
140/**
Jesse Barnese8b962b2007-11-22 14:02:38 +1000141 * drm_sysfs_device_release - do nothing
142 * @dev: Linux device
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143 *
Jesse Barnese8b962b2007-11-22 14:02:38 +1000144 * Normally, this would free the DRM device associated with @dev, along
145 * with cleaning up any other stuff. But we do that in the DRM core, so
146 * this function can just return and hope that the core does its job.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 */
Jesse Barnese8b962b2007-11-22 14:02:38 +1000148static void drm_sysfs_device_release(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149{
Ma Ling77d26dc2009-04-16 17:51:25 +0800150 memset(dev, 0, sizeof(struct device));
Jesse Barnese8b962b2007-11-22 14:02:38 +1000151 return;
152}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153
Dave Airlief453ba02008-11-07 14:05:41 -0800154/*
155 * Connector properties
156 */
157static ssize_t status_show(struct device *device,
158 struct device_attribute *attr,
159 char *buf)
160{
161 struct drm_connector *connector = to_drm_connector(device);
162 enum drm_connector_status status;
Chris Wilson007c80a2011-03-15 11:40:00 +0000163 int ret;
164
165 ret = mutex_lock_interruptible(&connector->dev->mode_config.mutex);
166 if (ret)
167 return ret;
Dave Airlief453ba02008-11-07 14:05:41 -0800168
Chris Wilson7b334fc2010-09-09 23:51:02 +0100169 status = connector->funcs->detect(connector, true);
Chris Wilson007c80a2011-03-15 11:40:00 +0000170 mutex_unlock(&connector->dev->mode_config.mutex);
171
Keith Packard75185c92009-05-30 20:42:25 -0700172 return snprintf(buf, PAGE_SIZE, "%s\n",
Dave Airlief453ba02008-11-07 14:05:41 -0800173 drm_get_connector_status_name(status));
174}
175
176static ssize_t dpms_show(struct device *device,
177 struct device_attribute *attr,
178 char *buf)
179{
180 struct drm_connector *connector = to_drm_connector(device);
181 struct drm_device *dev = connector->dev;
182 uint64_t dpms_status;
183 int ret;
184
185 ret = drm_connector_property_get_value(connector,
186 dev->mode_config.dpms_property,
187 &dpms_status);
188 if (ret)
189 return 0;
190
Keith Packard75185c92009-05-30 20:42:25 -0700191 return snprintf(buf, PAGE_SIZE, "%s\n",
Dave Airlief453ba02008-11-07 14:05:41 -0800192 drm_get_dpms_name((int)dpms_status));
193}
194
195static ssize_t enabled_show(struct device *device,
196 struct device_attribute *attr,
197 char *buf)
198{
199 struct drm_connector *connector = to_drm_connector(device);
200
Keith Packard75185c92009-05-30 20:42:25 -0700201 return snprintf(buf, PAGE_SIZE, "%s\n", connector->encoder ? "enabled" :
Dave Airlief453ba02008-11-07 14:05:41 -0800202 "disabled");
203}
204
Chris Wright2c3c8be2010-05-12 18:28:57 -0700205static ssize_t edid_show(struct file *filp, struct kobject *kobj,
206 struct bin_attribute *attr, char *buf, loff_t off,
207 size_t count)
Dave Airlief453ba02008-11-07 14:05:41 -0800208{
209 struct device *connector_dev = container_of(kobj, struct device, kobj);
210 struct drm_connector *connector = to_drm_connector(connector_dev);
211 unsigned char *edid;
212 size_t size;
213
214 if (!connector->edid_blob_ptr)
215 return 0;
216
217 edid = connector->edid_blob_ptr->data;
218 size = connector->edid_blob_ptr->length;
219 if (!edid)
220 return 0;
221
222 if (off >= size)
223 return 0;
224
225 if (off + count > size)
226 count = size - off;
227 memcpy(buf, edid + off, count);
228
229 return count;
230}
231
232static ssize_t modes_show(struct device *device,
233 struct device_attribute *attr,
234 char *buf)
235{
236 struct drm_connector *connector = to_drm_connector(device);
237 struct drm_display_mode *mode;
238 int written = 0;
239
240 list_for_each_entry(mode, &connector->modes, head) {
241 written += snprintf(buf + written, PAGE_SIZE - written, "%s\n",
242 mode->name);
243 }
244
245 return written;
246}
247
248static ssize_t subconnector_show(struct device *device,
249 struct device_attribute *attr,
250 char *buf)
251{
252 struct drm_connector *connector = to_drm_connector(device);
253 struct drm_device *dev = connector->dev;
254 struct drm_property *prop = NULL;
255 uint64_t subconnector;
256 int is_tv = 0;
257 int ret;
258
259 switch (connector->connector_type) {
260 case DRM_MODE_CONNECTOR_DVII:
261 prop = dev->mode_config.dvi_i_subconnector_property;
262 break;
263 case DRM_MODE_CONNECTOR_Composite:
264 case DRM_MODE_CONNECTOR_SVIDEO:
265 case DRM_MODE_CONNECTOR_Component:
Francisco Jerez74bd3c22009-08-02 04:19:18 +0200266 case DRM_MODE_CONNECTOR_TV:
Dave Airlief453ba02008-11-07 14:05:41 -0800267 prop = dev->mode_config.tv_subconnector_property;
268 is_tv = 1;
269 break;
270 default:
271 DRM_ERROR("Wrong connector type for this property\n");
272 return 0;
273 }
274
275 if (!prop) {
276 DRM_ERROR("Unable to find subconnector property\n");
277 return 0;
278 }
279
280 ret = drm_connector_property_get_value(connector, prop, &subconnector);
281 if (ret)
282 return 0;
283
284 return snprintf(buf, PAGE_SIZE, "%s", is_tv ?
285 drm_get_tv_subconnector_name((int)subconnector) :
286 drm_get_dvi_i_subconnector_name((int)subconnector));
287}
288
289static ssize_t select_subconnector_show(struct device *device,
290 struct device_attribute *attr,
291 char *buf)
292{
293 struct drm_connector *connector = to_drm_connector(device);
294 struct drm_device *dev = connector->dev;
295 struct drm_property *prop = NULL;
296 uint64_t subconnector;
297 int is_tv = 0;
298 int ret;
299
300 switch (connector->connector_type) {
301 case DRM_MODE_CONNECTOR_DVII:
302 prop = dev->mode_config.dvi_i_select_subconnector_property;
303 break;
304 case DRM_MODE_CONNECTOR_Composite:
305 case DRM_MODE_CONNECTOR_SVIDEO:
306 case DRM_MODE_CONNECTOR_Component:
Francisco Jerez74bd3c22009-08-02 04:19:18 +0200307 case DRM_MODE_CONNECTOR_TV:
Dave Airlief453ba02008-11-07 14:05:41 -0800308 prop = dev->mode_config.tv_select_subconnector_property;
309 is_tv = 1;
310 break;
311 default:
312 DRM_ERROR("Wrong connector type for this property\n");
313 return 0;
314 }
315
316 if (!prop) {
317 DRM_ERROR("Unable to find select subconnector property\n");
318 return 0;
319 }
320
321 ret = drm_connector_property_get_value(connector, prop, &subconnector);
322 if (ret)
323 return 0;
324
325 return snprintf(buf, PAGE_SIZE, "%s", is_tv ?
326 drm_get_tv_select_name((int)subconnector) :
327 drm_get_dvi_i_select_name((int)subconnector));
328}
329
330static struct device_attribute connector_attrs[] = {
331 __ATTR_RO(status),
332 __ATTR_RO(enabled),
333 __ATTR_RO(dpms),
334 __ATTR_RO(modes),
335};
336
337/* These attributes are for both DVI-I connectors and all types of tv-out. */
338static struct device_attribute connector_attrs_opt1[] = {
339 __ATTR_RO(subconnector),
340 __ATTR_RO(select_subconnector),
341};
342
343static struct bin_attribute edid_attr = {
344 .attr.name = "edid",
Keith Packarde36ebaf2009-05-30 20:42:26 -0700345 .attr.mode = 0444,
Adam Jackson7466f4c2010-03-29 21:43:23 +0000346 .size = 0,
Dave Airlief453ba02008-11-07 14:05:41 -0800347 .read = edid_show,
348};
349
350/**
Laurent Pinchart3b02ab82012-05-17 13:27:20 +0200351 * drm_sysfs_connector_add - add a connector to sysfs
Dave Airlief453ba02008-11-07 14:05:41 -0800352 * @connector: connector to add
353 *
Laurent Pinchart3b02ab82012-05-17 13:27:20 +0200354 * Create a connector device in sysfs, along with its associated connector
Dave Airlief453ba02008-11-07 14:05:41 -0800355 * properties (so far, connection status, dpms, mode list & edid) and
356 * generate a hotplug event so userspace knows there's a new connector
357 * available.
358 *
359 * Note:
Laurent Pinchart3b02ab82012-05-17 13:27:20 +0200360 * This routine should only be called *once* for each registered connector.
361 * A second call for an already registered connector will trigger the BUG_ON
Dave Airlief453ba02008-11-07 14:05:41 -0800362 * below.
363 */
364int drm_sysfs_connector_add(struct drm_connector *connector)
365{
366 struct drm_device *dev = connector->dev;
Dan Carpentera1c45602010-04-27 14:11:05 -0700367 int attr_cnt = 0;
368 int opt_cnt = 0;
369 int i;
Laurent Pinchart4a1b0712012-05-17 13:27:21 +0200370 int ret;
Dave Airlief453ba02008-11-07 14:05:41 -0800371
372 /* We shouldn't get called more than once for the same connector */
373 BUG_ON(device_is_registered(&connector->kdev));
374
375 connector->kdev.parent = &dev->primary->kdev;
376 connector->kdev.class = drm_class;
377 connector->kdev.release = drm_sysfs_device_release;
378
379 DRM_DEBUG("adding \"%s\" to sysfs\n",
380 drm_get_connector_name(connector));
381
Kay Sievers2ead0542009-03-24 16:38:22 -0700382 dev_set_name(&connector->kdev, "card%d-%s",
383 dev->primary->index, drm_get_connector_name(connector));
Dave Airlief453ba02008-11-07 14:05:41 -0800384 ret = device_register(&connector->kdev);
385
386 if (ret) {
387 DRM_ERROR("failed to register connector device: %d\n", ret);
388 goto out;
389 }
390
391 /* Standard attributes */
392
Dan Carpentera1c45602010-04-27 14:11:05 -0700393 for (attr_cnt = 0; attr_cnt < ARRAY_SIZE(connector_attrs); attr_cnt++) {
394 ret = device_create_file(&connector->kdev, &connector_attrs[attr_cnt]);
Dave Airlief453ba02008-11-07 14:05:41 -0800395 if (ret)
396 goto err_out_files;
397 }
398
399 /* Optional attributes */
400 /*
401 * In the long run it maybe a good idea to make one set of
402 * optionals per connector type.
403 */
404 switch (connector->connector_type) {
405 case DRM_MODE_CONNECTOR_DVII:
406 case DRM_MODE_CONNECTOR_Composite:
407 case DRM_MODE_CONNECTOR_SVIDEO:
408 case DRM_MODE_CONNECTOR_Component:
Francisco Jerez74bd3c22009-08-02 04:19:18 +0200409 case DRM_MODE_CONNECTOR_TV:
Dan Carpentera1c45602010-04-27 14:11:05 -0700410 for (opt_cnt = 0; opt_cnt < ARRAY_SIZE(connector_attrs_opt1); opt_cnt++) {
411 ret = device_create_file(&connector->kdev, &connector_attrs_opt1[opt_cnt]);
Dave Airlief453ba02008-11-07 14:05:41 -0800412 if (ret)
413 goto err_out_files;
414 }
415 break;
416 default:
417 break;
418 }
419
420 ret = sysfs_create_bin_file(&connector->kdev.kobj, &edid_attr);
421 if (ret)
422 goto err_out_files;
423
424 /* Let userspace know we have a new connector */
425 drm_sysfs_hotplug_event(dev);
426
427 return 0;
428
429err_out_files:
Dan Carpentera1c45602010-04-27 14:11:05 -0700430 for (i = 0; i < opt_cnt; i++)
431 device_remove_file(&connector->kdev, &connector_attrs_opt1[i]);
432 for (i = 0; i < attr_cnt; i++)
433 device_remove_file(&connector->kdev, &connector_attrs[i]);
Dave Airlief453ba02008-11-07 14:05:41 -0800434 device_unregister(&connector->kdev);
435
436out:
437 return ret;
438}
439EXPORT_SYMBOL(drm_sysfs_connector_add);
440
441/**
442 * drm_sysfs_connector_remove - remove an connector device from sysfs
443 * @connector: connector to remove
444 *
445 * Remove @connector and its associated attributes from sysfs. Note that
446 * the device model core will take care of sending the "remove" uevent
447 * at this time, so we don't need to do it.
448 *
449 * Note:
450 * This routine should only be called if the connector was previously
451 * successfully registered. If @connector hasn't been registered yet,
452 * you'll likely see a panic somewhere deep in sysfs code when called.
453 */
454void drm_sysfs_connector_remove(struct drm_connector *connector)
455{
456 int i;
457
Dave Airlie1828fe62012-02-20 14:15:02 +0000458 if (!connector->kdev.parent)
459 return;
Dave Airlief453ba02008-11-07 14:05:41 -0800460 DRM_DEBUG("removing \"%s\" from sysfs\n",
461 drm_get_connector_name(connector));
462
463 for (i = 0; i < ARRAY_SIZE(connector_attrs); i++)
464 device_remove_file(&connector->kdev, &connector_attrs[i]);
465 sysfs_remove_bin_file(&connector->kdev.kobj, &edid_attr);
466 device_unregister(&connector->kdev);
Dave Airlie1828fe62012-02-20 14:15:02 +0000467 connector->kdev.parent = NULL;
Dave Airlief453ba02008-11-07 14:05:41 -0800468}
469EXPORT_SYMBOL(drm_sysfs_connector_remove);
470
471/**
472 * drm_sysfs_hotplug_event - generate a DRM uevent
473 * @dev: DRM device
474 *
475 * Send a uevent for the DRM device specified by @dev. Currently we only
476 * set HOTPLUG=1 in the uevent environment, but this could be expanded to
477 * deal with other types of events.
478 */
479void drm_sysfs_hotplug_event(struct drm_device *dev)
480{
481 char *event_string = "HOTPLUG=1";
482 char *envp[] = { event_string, NULL };
483
484 DRM_DEBUG("generating hotplug event\n");
485
486 kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, envp);
487}
Jesse Barnes5ca58282009-03-31 14:11:15 -0700488EXPORT_SYMBOL(drm_sysfs_hotplug_event);
Dave Airlief453ba02008-11-07 14:05:41 -0800489
Jesse Barnese8b962b2007-11-22 14:02:38 +1000490/**
491 * drm_sysfs_device_add - adds a class device to sysfs for a character driver
492 * @dev: DRM device to be added
493 * @head: DRM head in question
494 *
495 * Add a DRM device to the DRM's device model class. We use @dev's PCI device
496 * as the parent for the Linux device, and make sure it has a file containing
497 * the driver we're using (for userspace compatibility).
498 */
Dave Airlie2c14f282008-04-21 16:47:32 +1000499int drm_sysfs_device_add(struct drm_minor *minor)
Jesse Barnese8b962b2007-11-22 14:02:38 +1000500{
501 int err;
Dave Airlie2c14f282008-04-21 16:47:32 +1000502 char *minor_str;
Jesse Barnese8b962b2007-11-22 14:02:38 +1000503
Jordan Crousedcdb1672010-05-27 13:40:25 -0600504 minor->kdev.parent = minor->dev->dev;
505
Dave Airlie2c14f282008-04-21 16:47:32 +1000506 minor->kdev.class = drm_class;
507 minor->kdev.release = drm_sysfs_device_release;
508 minor->kdev.devt = minor->device;
Thomas Hellstrom08e4d532009-08-20 19:02:31 +1000509 minor->kdev.type = &drm_sysfs_device_minor;
Dave Airlief453ba02008-11-07 14:05:41 -0800510 if (minor->type == DRM_MINOR_CONTROL)
511 minor_str = "controlD%d";
512 else if (minor->type == DRM_MINOR_RENDER)
513 minor_str = "renderD%d";
514 else
515 minor_str = "card%d";
Jesse Barnese8b962b2007-11-22 14:02:38 +1000516
Kay Sievers8f4bbd92009-01-06 10:44:41 -0800517 dev_set_name(&minor->kdev, minor_str, minor->index);
Dave Airlie2c14f282008-04-21 16:47:32 +1000518
519 err = device_register(&minor->kdev);
Jesse Barnese8b962b2007-11-22 14:02:38 +1000520 if (err) {
521 DRM_ERROR("device add failed: %d\n", err);
Jeff Garzik24f73c92006-10-10 14:23:37 -0700522 goto err_out;
523 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524
Jesse Barnese8b962b2007-11-22 14:02:38 +1000525 return 0;
Jeff Garzik24f73c92006-10-10 14:23:37 -0700526
Jeff Garzik24f73c92006-10-10 14:23:37 -0700527err_out:
Jesse Barnese8b962b2007-11-22 14:02:38 +1000528 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529}
530
531/**
Jesse Barnese8b962b2007-11-22 14:02:38 +1000532 * drm_sysfs_device_remove - remove DRM device
533 * @dev: DRM device to remove
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 *
535 * This call unregisters and cleans up a class device that was created with a
536 * call to drm_sysfs_device_add()
537 */
Dave Airlie2c14f282008-04-21 16:47:32 +1000538void drm_sysfs_device_remove(struct drm_minor *minor)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539{
Dave Airlie1828fe62012-02-20 14:15:02 +0000540 if (minor->kdev.parent)
541 device_unregister(&minor->kdev);
542 minor->kdev.parent = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543}
Thomas Hellstrom327c2252009-08-17 16:28:37 +0200544
545
546/**
547 * drm_class_device_register - Register a struct device in the drm class.
548 *
549 * @dev: pointer to struct device to register.
550 *
551 * @dev should have all relevant members pre-filled with the exception
552 * of the class member. In particular, the device_type member must
553 * be set.
554 */
555
556int drm_class_device_register(struct device *dev)
557{
Dave Airlie49099c42012-07-06 18:06:42 +0100558 if (!drm_class || IS_ERR(drm_class))
559 return -ENOENT;
560
Thomas Hellstrom327c2252009-08-17 16:28:37 +0200561 dev->class = drm_class;
562 return device_register(dev);
563}
564EXPORT_SYMBOL_GPL(drm_class_device_register);
565
566void drm_class_device_unregister(struct device *dev)
567{
568 return device_unregister(dev);
569}
570EXPORT_SYMBOL_GPL(drm_class_device_unregister);