projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
drm/atomic: Add MODE_ID property
[deliverable/linux.git] / drivers / gpu / drm / drm_crtc.c
CommitLineData
f453ba04
DA		 1/*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
6ba6d03e 32#include <linux/ctype.h>
f453ba04 33#include <linux/list.h>
5a0e3ad6 34#include <linux/slab.h>
2d1a8a48 35#include <linux/export.h>
760285e7
DH		 36#include <drm/drmP.h>
37#include <drm/drm_crtc.h>
38#include <drm/drm_edid.h>
39#include <drm/drm_fourcc.h>
51fd371b 40#include <drm/drm_modeset_lock.h>
88a48e29 41#include <drm/drm_atomic.h>
f453ba04 42
8bd441b2 43#include "drm_crtc_internal.h"
67d0ec4e 44#include "drm_internal.h"
8bd441b2 45
9a6f5130
CW		 46static struct drm_framebuffer *
47internal_framebuffer_create(struct drm_device *dev,
48 struct drm_mode_fb_cmd2 *r,
49 struct drm_file *file_priv);
c394c2b0 50
f453ba04
DA		 51/* Avoid boilerplate. I'm tired of typing. */
52#define DRM_ENUM_NAME_FN(fnname, list) \
d20d3174 53 const char *fnname(int val) \
f453ba04
DA		 54 { \
55 int i; \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
59 } \
60 return "(unknown)"; \
61 }
62
63/*
64 * Global properties
65 */
4dfd909f
TR		 66static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
67 { DRM_MODE_DPMS_ON, "On" },
f453ba04
DA		 68 { DRM_MODE_DPMS_STANDBY, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
70 { DRM_MODE_DPMS_OFF, "Off" }
71};
72
73DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
74
4dfd909f 75static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
9922ab5a
RC		 76 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
79};
80
f453ba04
DA		 81/*
82 * Optional properties
83 */
4dfd909f 84static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
53bd8389
JB		 85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 89};
90
ff587e45
VK		 91static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
95};
96
f453ba04
DA		 97/*
98 * Non-global properties, but "required" for certain connectors.
99 */
4dfd909f 100static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
f453ba04
DA		 101 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
104};
105
106DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
107
4dfd909f 108static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
f453ba04
DA		 109 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
112};
113
114DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
115 drm_dvi_i_subconnector_enum_list)
116
4dfd909f 117static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
f453ba04
DA		 118 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 123};
124
125DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
126
4dfd909f 127static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
f453ba04
DA		 128 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 132 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 133};
134
135DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
136 drm_tv_subconnector_enum_list)
137
d20d3174 138static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
884840aa
JB		 139 { DRM_MODE_DIRTY_OFF, "Off" },
140 { DRM_MODE_DIRTY_ON, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
142};
143
f453ba04
DA		 144struct drm_conn_prop_enum_list {
145 int type;
d20d3174 146 const char *name;
b21e3afe 147 struct ida ida;
f453ba04
DA		 148};
149
150/*
151 * Connector and encoder types.
152 */
4dfd909f
TR		 153static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
154 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
b21e3afe
IM		 155 { DRM_MODE_CONNECTOR_VGA, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV, "TV" },
168 { DRM_MODE_CONNECTOR_eDP, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
b8923273 170 { DRM_MODE_CONNECTOR_DSI, "DSI" },
f453ba04
DA		 171};
172
4dfd909f
TR		 173static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
174 { DRM_MODE_ENCODER_NONE, "None" },
f453ba04
DA		 175 { DRM_MODE_ENCODER_DAC, "DAC" },
176 { DRM_MODE_ENCODER_TMDS, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 179 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
b8923273 180 { DRM_MODE_ENCODER_DSI, "DSI" },
182407a6 181 { DRM_MODE_ENCODER_DPMST, "DP MST" },
f453ba04
DA		 182};
183
4dfd909f 184static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
ac1bb36c
JB		 185 { SubPixelUnknown, "Unknown" },
186 { SubPixelHorizontalRGB, "Horizontal RGB" },
187 { SubPixelHorizontalBGR, "Horizontal BGR" },
188 { SubPixelVerticalRGB, "Vertical RGB" },
189 { SubPixelVerticalBGR, "Vertical BGR" },
190 { SubPixelNone, "None" },
191};
192
b21e3afe
IM		 193void drm_connector_ida_init(void)
194{
195 int i;
196
197 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
198 ida_init(&drm_connector_enum_list[i].ida);
199}
200
201void drm_connector_ida_destroy(void)
202{
203 int i;
204
205 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
206 ida_destroy(&drm_connector_enum_list[i].ida);
207}
208
c8e32cc1
DV		 209/**
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
212 *
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
215 */
d20d3174 216const char *drm_get_connector_status_name(enum drm_connector_status status)
f453ba04
DA		 217{
218 if (status == connector_status_connected)
219 return "connected";
220 else if (status == connector_status_disconnected)
221 return "disconnected";
222 else
223 return "unknown";
224}
ed7951dc 225EXPORT_SYMBOL(drm_get_connector_status_name);
f453ba04 226
ac1bb36c
JB		 227/**
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
230 *
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
233 */
234const char *drm_get_subpixel_order_name(enum subpixel_order order)
235{
236 return drm_subpixel_enum_list[order].name;
237}
238EXPORT_SYMBOL(drm_get_subpixel_order_name);
239
6ba6d03e
VS		 240static char printable_char(int c)
241{
242 return isascii(c) && isprint(c) ? c : '?';
243}
244
c8e32cc1
DV		 245/**
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
248 *
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
251 *
252 * FIXME: This isn't really multithreading safe.
253 */
d20d3174 254const char *drm_get_format_name(uint32_t format)
6ba6d03e
VS		 255{
256 static char buf[32];
257
258 snprintf(buf, sizeof(buf),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format & 0xff),
261 printable_char((format >> 8) & 0xff),
262 printable_char((format >> 16) & 0xff),
263 printable_char((format >> 24) & 0x7f),
264 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
265 format);
266
267 return buf;
268}
269EXPORT_SYMBOL(drm_get_format_name);
270
2ee39452
DA		 271/*
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
274 */
275static int drm_mode_object_get_reg(struct drm_device *dev,
276 struct drm_mode_object *obj,
277 uint32_t obj_type,
278 bool register_obj)
279{
280 int ret;
281
282 mutex_lock(&dev->mode_config.idr_mutex);
283 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
284 if (ret >= 0) {
285 /*
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
288 */
289 obj->id = ret;
290 obj->type = obj_type;
291 }
292 mutex_unlock(&dev->mode_config.idr_mutex);
293
294 return ret < 0 ? ret : 0;
295}
296
f453ba04 297/**
065a50ed 298 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 299 * @dev: DRM device
065a50ed
DV		 300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
f453ba04 302 *
f453ba04 303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
c8e32cc1
DV		 304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
f453ba04 307 *
c8e32cc1 308 * Returns:
f453ba04
DA		 309 * New unique (relative to other objects in @dev) integer identifier for the
310 * object.
311 */
8bd441b2
DV		 312int drm_mode_object_get(struct drm_device *dev,
313 struct drm_mode_object *obj, uint32_t obj_type)
f453ba04 314{
2ee39452
DA		 315 return drm_mode_object_get_reg(dev, obj, obj_type, true);
316}
f453ba04 317
2ee39452
DA		 318static void drm_mode_object_register(struct drm_device *dev,
319 struct drm_mode_object *obj)
320{
ad2563c2 321 mutex_lock(&dev->mode_config.idr_mutex);
2ee39452 322 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
ad2563c2 323 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 324}
325
326/**
065a50ed 327 * drm_mode_object_put - free a modeset identifer
f453ba04 328 * @dev: DRM device
065a50ed 329 * @object: object to free
f453ba04 330 *
c8e32cc1
DV		 331 * Free @id from @dev's unique identifier pool. Note that despite the _get
332 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
333 * for reference counted modeset objects like framebuffers.
f453ba04 334 */
8bd441b2
DV		 335void drm_mode_object_put(struct drm_device *dev,
336 struct drm_mode_object *object)
f453ba04 337{
ad2563c2 338 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 339 idr_remove(&dev->mode_config.crtc_idr, object->id);
ad2563c2 340 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 341}
342
98f75de4
RC		 343static struct drm_mode_object *_object_find(struct drm_device *dev,
344 uint32_t id, uint32_t type)
345{
346 struct drm_mode_object *obj = NULL;
347
348 mutex_lock(&dev->mode_config.idr_mutex);
349 obj = idr_find(&dev->mode_config.crtc_idr, id);
168c02ec
DV		 350 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
351 obj = NULL;
352 if (obj && obj->id != id)
353 obj = NULL;
354 /* don't leak out unref'd fb's */
6bcacf51
DS		 355 if (obj &&
356 (obj->type == DRM_MODE_OBJECT_FB ||
357 obj->type == DRM_MODE_OBJECT_BLOB))
98f75de4
RC		 358 obj = NULL;
359 mutex_unlock(&dev->mode_config.idr_mutex);
360
361 return obj;
362}
363
786b99ed
DV		 364/**
365 * drm_mode_object_find - look up a drm object with static lifetime
366 * @dev: drm device
367 * @id: id of the mode object
368 * @type: type of the mode object
369 *
370 * Note that framebuffers cannot be looked up with this functions - since those
98f75de4
RC		 371 * are reference counted, they need special treatment. Even with
372 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
373 * rather than WARN_ON()).
786b99ed 374 */
7a9c9060
DV		 375struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
376 uint32_t id, uint32_t type)
f453ba04 377{
ad2563c2 378 struct drm_mode_object *obj = NULL;
f453ba04 379
786b99ed
DV		 380 /* Framebuffers are reference counted and need their own lookup
381 * function.*/
6bcacf51 382 WARN_ON(type == DRM_MODE_OBJECT_FB || type == DRM_MODE_OBJECT_BLOB);
98f75de4 383 obj = _object_find(dev, id, type);
f453ba04
DA		 384 return obj;
385}
386EXPORT_SYMBOL(drm_mode_object_find);
387
f453ba04
DA		 388/**
389 * drm_framebuffer_init - initialize a framebuffer
390 * @dev: DRM device
065a50ed
DV		 391 * @fb: framebuffer to be initialized
392 * @funcs: ... with these functions
f453ba04 393 *
f453ba04
DA		 394 * Allocates an ID for the framebuffer's parent mode object, sets its mode
395 * functions & device file and adds it to the master fd list.
396 *
4b096ac1
DV		 397 * IMPORTANT:
398 * This functions publishes the fb and makes it available for concurrent access
399 * by other users. Which means by this point the fb _must_ be fully set up -
400 * since all the fb attributes are invariant over its lifetime, no further
401 * locking but only correct reference counting is required.
402 *
c8e32cc1 403 * Returns:
af901ca1 404 * Zero on success, error code on failure.
f453ba04
DA		 405 */
406int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
407 const struct drm_framebuffer_funcs *funcs)
408{
409 int ret;
410
4b096ac1 411 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e 412 kref_init(&fb->refcount);
4b096ac1
DV		 413 INIT_LIST_HEAD(&fb->filp_head);
414 fb->dev = dev;
415 fb->funcs = funcs;
f7eff60e 416
f453ba04 417 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
6bfc56aa 418 if (ret)
4b096ac1 419 goto out;
f453ba04 420
f453ba04
DA		 421 dev->mode_config.num_fb++;
422 list_add(&fb->head, &dev->mode_config.fb_list);
4b096ac1
DV		 423out:
424 mutex_unlock(&dev->mode_config.fb_lock);
f453ba04
DA		 425
426 return 0;
427}
428EXPORT_SYMBOL(drm_framebuffer_init);
429
83f45fc3
DV		 430/* dev->mode_config.fb_lock must be held! */
431static void __drm_framebuffer_unregister(struct drm_device *dev,
432 struct drm_framebuffer *fb)
433{
434 mutex_lock(&dev->mode_config.idr_mutex);
435 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
436 mutex_unlock(&dev->mode_config.idr_mutex);
437
438 fb->base.id = 0;
439}
440
f7eff60e
RC		 441static void drm_framebuffer_free(struct kref *kref)
442{
443 struct drm_framebuffer *fb =
444 container_of(kref, struct drm_framebuffer, refcount);
83f45fc3
DV		 445 struct drm_device *dev = fb->dev;
446
447 /*
448 * The lookup idr holds a weak reference, which has not necessarily been
449 * removed at this point. Check for that.
450 */
451 mutex_lock(&dev->mode_config.fb_lock);
452 if (fb->base.id) {
453 /* Mark fb as reaped and drop idr ref. */
454 __drm_framebuffer_unregister(dev, fb);
455 }
456 mutex_unlock(&dev->mode_config.fb_lock);
457
f7eff60e
RC		 458 fb->funcs->destroy(fb);
459}
460
2b677e8c
DV		 461static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
462 uint32_t id)
463{
464 struct drm_mode_object *obj = NULL;
465 struct drm_framebuffer *fb;
466
467 mutex_lock(&dev->mode_config.idr_mutex);
468 obj = idr_find(&dev->mode_config.crtc_idr, id);
469 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
470 fb = NULL;
471 else
472 fb = obj_to_fb(obj);
473 mutex_unlock(&dev->mode_config.idr_mutex);
474
475 return fb;
476}
477
786b99ed
DV		 478/**
479 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
480 * @dev: drm device
481 * @id: id of the fb object
482 *
483 * If successful, this grabs an additional reference to the framebuffer -
484 * callers need to make sure to eventually unreference the returned framebuffer
c8e32cc1 485 * again, using @drm_framebuffer_unreference.
786b99ed
DV		 486 */
487struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
488 uint32_t id)
489{
786b99ed
DV		 490 struct drm_framebuffer *fb;
491
492 mutex_lock(&dev->mode_config.fb_lock);
2b677e8c 493 fb = __drm_framebuffer_lookup(dev, id);
83f45fc3
DV		 494 if (fb) {
495 if (!kref_get_unless_zero(&fb->refcount))
496 fb = NULL;
497 }
786b99ed
DV		 498 mutex_unlock(&dev->mode_config.fb_lock);
499
500 return fb;
501}
502EXPORT_SYMBOL(drm_framebuffer_lookup);
503
f7eff60e
RC		 504/**
505 * drm_framebuffer_unreference - unref a framebuffer
065a50ed
DV		 506 * @fb: framebuffer to unref
507 *
508 * This functions decrements the fb's refcount and frees it if it drops to zero.
f7eff60e
RC		 509 */
510void drm_framebuffer_unreference(struct drm_framebuffer *fb)
511{
8291272a 512 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 513 kref_put(&fb->refcount, drm_framebuffer_free);
514}
515EXPORT_SYMBOL(drm_framebuffer_unreference);
516
517/**
518 * drm_framebuffer_reference - incr the fb refcnt
065a50ed 519 * @fb: framebuffer
c8e32cc1
DV		 520 *
521 * This functions increments the fb's refcount.
f7eff60e
RC		 522 */
523void drm_framebuffer_reference(struct drm_framebuffer *fb)
524{
8291272a 525 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 526 kref_get(&fb->refcount);
527}
528EXPORT_SYMBOL(drm_framebuffer_reference);
529
36206361
DV		 530/**
531 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
532 * @fb: fb to unregister
533 *
534 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
535 * those used for fbdev. Note that the caller must hold a reference of it's own,
536 * i.e. the object may not be destroyed through this call (since it'll lead to a
537 * locking inversion).
538 */
539void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
540{
2b677e8c
DV		 541 struct drm_device *dev = fb->dev;
542
543 mutex_lock(&dev->mode_config.fb_lock);
544 /* Mark fb as reaped and drop idr ref. */
545 __drm_framebuffer_unregister(dev, fb);
546 mutex_unlock(&dev->mode_config.fb_lock);
36206361
DV		 547}
548EXPORT_SYMBOL(drm_framebuffer_unregister_private);
549
f453ba04
DA		 550/**
551 * drm_framebuffer_cleanup - remove a framebuffer object
552 * @fb: framebuffer to remove
553 *
c8e32cc1
DV		 554 * Cleanup framebuffer. This function is intended to be used from the drivers
555 * ->destroy callback. It can also be used to clean up driver private
556 * framebuffers embedded into a larger structure.
36206361
DV		 557 *
558 * Note that this function does not remove the fb from active usuage - if it is
559 * still used anywhere, hilarity can ensue since userspace could call getfb on
560 * the id and get back -EINVAL. Obviously no concern at driver unload time.
561 *
562 * Also, the framebuffer will not be removed from the lookup idr - for
563 * user-created framebuffers this will happen in in the rmfb ioctl. For
564 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
565 * drm_framebuffer_unregister_private.
f453ba04
DA		 566 */
567void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
f7eff60e
RC		 568{
569 struct drm_device *dev = fb->dev;
8faf6b18 570
4b096ac1 571 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e
RC		 572 list_del(&fb->head);
573 dev->mode_config.num_fb--;
4b096ac1 574 mutex_unlock(&dev->mode_config.fb_lock);
f7eff60e
RC		 575}
576EXPORT_SYMBOL(drm_framebuffer_cleanup);
577
578/**
579 * drm_framebuffer_remove - remove and unreference a framebuffer object
580 * @fb: framebuffer to remove
581 *
f7eff60e 582 * Scans all the CRTCs and planes in @dev's mode_config. If they're
36206361 583 * using @fb, removes it, setting it to NULL. Then drops the reference to the
b62584e3
DV		 584 * passed-in framebuffer. Might take the modeset locks.
585 *
586 * Note that this function optimizes the cleanup away if the caller holds the
587 * last reference to the framebuffer. It is also guaranteed to not take the
588 * modeset locks in this case.
f7eff60e
RC		 589 */
590void drm_framebuffer_remove(struct drm_framebuffer *fb)
f453ba04
DA		 591{
592 struct drm_device *dev = fb->dev;
593 struct drm_crtc *crtc;
8cf5c917 594 struct drm_plane *plane;
5ef5f72f
DA		 595 struct drm_mode_set set;
596 int ret;
f453ba04 597
4b096ac1 598 WARN_ON(!list_empty(&fb->filp_head));
8faf6b18 599
b62584e3
DV		 600 /*
601 * drm ABI mandates that we remove any deleted framebuffers from active
602 * useage. But since most sane clients only remove framebuffers they no
603 * longer need, try to optimize this away.
604 *
605 * Since we're holding a reference ourselves, observing a refcount of 1
606 * means that we're the last holder and can skip it. Also, the refcount
607 * can never increase from 1 again, so we don't need any barriers or
608 * locks.
609 *
610 * Note that userspace could try to race with use and instate a new
611 * usage _after_ we've cleared all current ones. End result will be an
612 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
613 * in this manner.
614 */
615 if (atomic_read(&fb->refcount.refcount) > 1) {
616 drm_modeset_lock_all(dev);
617 /* remove from any CRTC */
618 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
f4510a27 619 if (crtc->primary->fb == fb) {
b62584e3
DV		 620 /* should turn off the crtc */
621 memset(&set, 0, sizeof(struct drm_mode_set));
622 set.crtc = crtc;
623 set.fb = NULL;
624 ret = drm_mode_set_config_internal(&set);
625 if (ret)
626 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
627 }
5ef5f72f 628 }
f453ba04 629
b62584e3 630 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
9125e618
VS		 631 if (plane->fb == fb)
632 drm_plane_force_disable(plane);
8cf5c917 633 }
b62584e3 634 drm_modeset_unlock_all(dev);
8cf5c917
JB		 635 }
636
f7eff60e 637 drm_framebuffer_unreference(fb);
f453ba04 638}
f7eff60e 639EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04 640
51fd371b
RC		 641DEFINE_WW_CLASS(crtc_ww_class);
642
f453ba04 643/**
e13161af
MR		 644 * drm_crtc_init_with_planes - Initialise a new CRTC object with
645 * specified primary and cursor planes.
f453ba04
DA		 646 * @dev: DRM device
647 * @crtc: CRTC object to init
e13161af
MR		 648 * @primary: Primary plane for CRTC
649 * @cursor: Cursor plane for CRTC
f453ba04
DA		 650 * @funcs: callbacks for the new CRTC
651 *
ad6f5c34 652 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 653 *
c8e32cc1 654 * Returns:
6bfc56aa 655 * Zero on success, error code on failure.
f453ba04 656 */
e13161af
MR		 657int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
658 struct drm_plane *primary,
fc1d3e44 659 struct drm_plane *cursor,
e13161af 660 const struct drm_crtc_funcs *funcs)
f453ba04 661{
51fd371b 662 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 663 int ret;
664
522cf91f
BG		 665 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
666 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
667
f453ba04
DA		 668 crtc->dev = dev;
669 crtc->funcs = funcs;
7c80e128 670 crtc->invert_dimensions = false;
f453ba04 671
51fd371b 672 drm_modeset_lock_init(&crtc->mutex);
6bfc56aa
VS		 673 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
674 if (ret)
baf698b0 675 return ret;
f453ba04 676
bffd9de0
PZ		 677 crtc->base.properties = &crtc->properties;
678
51fd371b
RC		 679 list_add_tail(&crtc->head, &config->crtc_list);
680 config->num_crtc++;
6bfc56aa 681
e13161af 682 crtc->primary = primary;
fc1d3e44 683 crtc->cursor = cursor;
e13161af
MR		 684 if (primary)
685 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
fc1d3e44
MR		 686 if (cursor)
687 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
e13161af 688
eab3bbef
DV		 689 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
690 drm_object_attach_property(&crtc->base, config->prop_active, 0);
955f3c33 691 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
eab3bbef
DV		 692 }
693
baf698b0 694 return 0;
f453ba04 695}
e13161af 696EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 697
698/**
ad6f5c34 699 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 700 * @crtc: CRTC to cleanup
701 *
ad6f5c34
VS		 702 * This function cleans up @crtc and removes it from the DRM mode setting
703 * core. Note that the function does *not* free the crtc structure itself,
704 * this is the responsibility of the caller.
f453ba04
DA		 705 */
706void drm_crtc_cleanup(struct drm_crtc *crtc)
707{
708 struct drm_device *dev = crtc->dev;
709
9e1c156f
SK		 710 kfree(crtc->gamma_store);
711 crtc->gamma_store = NULL;
f453ba04 712
51fd371b
RC		 713 drm_modeset_lock_fini(&crtc->mutex);
714
f453ba04
DA		 715 drm_mode_object_put(dev, &crtc->base);
716 list_del(&crtc->head);
717 dev->mode_config.num_crtc--;
3009c037
TR		 718
719 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
720 if (crtc->state && crtc->funcs->atomic_destroy_state)
721 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
a18c0af1
TR		 722
723 memset(crtc, 0, sizeof(*crtc));
f453ba04
DA		 724}
725EXPORT_SYMBOL(drm_crtc_cleanup);
726
db5f7a6e
RK		 727/**
728 * drm_crtc_index - find the index of a registered CRTC
729 * @crtc: CRTC to find index for
730 *
731 * Given a registered CRTC, return the index of that CRTC within a DRM
732 * device's list of CRTCs.
733 */
734unsigned int drm_crtc_index(struct drm_crtc *crtc)
735{
736 unsigned int index = 0;
737 struct drm_crtc *tmp;
738
739 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
740 if (tmp == crtc)
741 return index;
742
743 index++;
744 }
745
746 BUG();
747}
748EXPORT_SYMBOL(drm_crtc_index);
749
86f422d5 750/*
f453ba04
DA		 751 * drm_mode_remove - remove and free a mode
752 * @connector: connector list to modify
753 * @mode: mode to remove
754 *
f453ba04
DA		 755 * Remove @mode from @connector's mode list, then free it.
756 */
86f422d5
LD		 757static void drm_mode_remove(struct drm_connector *connector,
758 struct drm_display_mode *mode)
f453ba04
DA		 759{
760 list_del(&mode->head);
554f1d78 761 drm_mode_destroy(connector->dev, mode);
f453ba04 762}
f453ba04 763
b5571e9d
BB		 764/**
765 * drm_display_info_set_bus_formats - set the supported bus formats
766 * @info: display info to store bus formats in
e37bfa1a
BB		 767 * @formats: array containing the supported bus formats
768 * @num_formats: the number of entries in the fmts array
b5571e9d
BB		 769 *
770 * Store the supported bus formats in display info structure.
771 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
772 * a full list of available formats.
773 */
774int drm_display_info_set_bus_formats(struct drm_display_info *info,
775 const u32 *formats,
776 unsigned int num_formats)
777{
778 u32 *fmts = NULL;
779
780 if (!formats && num_formats)
781 return -EINVAL;
782
783 if (formats && num_formats) {
784 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
785 GFP_KERNEL);
944579c5 786 if (!fmts)
b5571e9d
BB		 787 return -ENOMEM;
788 }
789
790 kfree(info->bus_formats);
791 info->bus_formats = fmts;
792 info->num_bus_formats = num_formats;
793
794 return 0;
795}
796EXPORT_SYMBOL(drm_display_info_set_bus_formats);
797
eaf99c74
CW		 798/**
799 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
800 * @connector: connector to quwery
eaf99c74
CW		 801 *
802 * The kernel supports per-connector configration of its consoles through
803 * use of the video= parameter. This function parses that option and
804 * extracts the user's specified mode (or enable/disable status) for a
805 * particular connector. This is typically only used during the early fbdev
806 * setup.
807 */
808static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
809{
810 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
811 char *option = NULL;
812
813 if (fb_get_options(connector->name, &option))
814 return;
815
816 if (!drm_mode_parse_command_line_for_connector(option,
817 connector,
818 mode))
819 return;
820
821 if (mode->force) {
822 const char *s;
823
824 switch (mode->force) {
825 case DRM_FORCE_OFF:
826 s = "OFF";
827 break;
828 case DRM_FORCE_ON_DIGITAL:
829 s = "ON - dig";
830 break;
831 default:
832 case DRM_FORCE_ON:
833 s = "ON";
834 break;
835 }
836
837 DRM_INFO("forcing %s connector %s\n", connector->name, s);
838 connector->force = mode->force;
839 }
840
841 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
842 connector->name,
843 mode->xres, mode->yres,
844 mode->refresh_specified ? mode->refresh : 60,
845 mode->rb ? " reduced blanking" : "",
846 mode->margins ? " with margins" : "",
847 mode->interlace ? " interlaced" : "");
848}
849
f453ba04
DA		 850/**
851 * drm_connector_init - Init a preallocated connector
852 * @dev: DRM device
853 * @connector: the connector to init
854 * @funcs: callbacks for this connector
065a50ed 855 * @connector_type: user visible type of the connector
f453ba04 856 *
f453ba04
DA		 857 * Initialises a preallocated connector. Connectors should be
858 * subclassed as part of driver connector objects.
6bfc56aa 859 *
c8e32cc1 860 * Returns:
6bfc56aa 861 * Zero on success, error code on failure.
f453ba04 862 */
6bfc56aa
VS		 863int drm_connector_init(struct drm_device *dev,
864 struct drm_connector *connector,
865 const struct drm_connector_funcs *funcs,
866 int connector_type)
f453ba04 867{
ae16c597 868 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa 869 int ret;
b21e3afe
IM		 870 struct ida *connector_ida =
871 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 872
84849903 873 drm_modeset_lock_all(dev);
f453ba04 874
2ee39452 875 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
6bfc56aa 876 if (ret)
2abdd313 877 goto out_unlock;
6bfc56aa 878
7e3bdf4a 879 connector->base.properties = &connector->properties;
f453ba04
DA		 880 connector->dev = dev;
881 connector->funcs = funcs;
f453ba04
DA		 882 connector->connector_type = connector_type;
883 connector->connector_type_id =
b21e3afe
IM		 884 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
885 if (connector->connector_type_id < 0) {
886 ret = connector->connector_type_id;
2abdd313 887 goto out_put;
b21e3afe 888 }
2abdd313
JN		 889 connector->name =
890 kasprintf(GFP_KERNEL, "%s-%d",
891 drm_connector_enum_list[connector_type].name,
892 connector->connector_type_id);
893 if (!connector->name) {
894 ret = -ENOMEM;
895 goto out_put;
896 }
897
f453ba04
DA		 898 INIT_LIST_HEAD(&connector->probed_modes);
899 INIT_LIST_HEAD(&connector->modes);
900 connector->edid_blob_ptr = NULL;
5e2cb2f6 901 connector->status = connector_status_unknown;
f453ba04 902
eaf99c74
CW		 903 drm_connector_get_cmdline_mode(connector);
904
c7eb76f4
DV		 905 /* We should add connectors at the end to avoid upsetting the connector
906 * index too much. */
ae16c597
RC		 907 list_add_tail(&connector->head, &config->connector_list);
908 config->num_connector++;
f453ba04 909
a7331e5c 910 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 911 drm_object_attach_property(&connector->base,
ae16c597 912 config->edid_property,
a7331e5c 913 0);
f453ba04 914
58495563 915 drm_object_attach_property(&connector->base,
ae16c597
RC		 916 config->dpms_property, 0);
917
918 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
919 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
920 }
f453ba04 921
30f65707
TW		 922 connector->debugfs_entry = NULL;
923
2abdd313
JN		 924out_put:
925 if (ret)
926 drm_mode_object_put(dev, &connector->base);
927
928out_unlock:
84849903 929 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 930
931 return ret;
f453ba04
DA		 932}
933EXPORT_SYMBOL(drm_connector_init);
934
935/**
936 * drm_connector_cleanup - cleans up an initialised connector
937 * @connector: connector to cleanup
938 *
f453ba04
DA		 939 * Cleans up the connector but doesn't free the object.
940 */
941void drm_connector_cleanup(struct drm_connector *connector)
942{
943 struct drm_device *dev = connector->dev;
944 struct drm_display_mode *mode, *t;
945
40d9b043
DA		 946 if (connector->tile_group) {
947 drm_mode_put_tile_group(dev, connector->tile_group);
948 connector->tile_group = NULL;
949 }
950
f453ba04
DA		 951 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
952 drm_mode_remove(connector, mode);
953
954 list_for_each_entry_safe(mode, t, &connector->modes, head)
955 drm_mode_remove(connector, mode);
956
b21e3afe
IM		 957 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
958 connector->connector_type_id);
959
b5571e9d 960 kfree(connector->display_info.bus_formats);
f453ba04 961 drm_mode_object_put(dev, &connector->base);
2abdd313
JN		 962 kfree(connector->name);
963 connector->name = NULL;
f453ba04 964 list_del(&connector->head);
6380c509 965 dev->mode_config.num_connector--;
3009c037
TR		 966
967 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
968 if (connector->state && connector->funcs->atomic_destroy_state)
969 connector->funcs->atomic_destroy_state(connector,
970 connector->state);
a18c0af1
TR		 971
972 memset(connector, 0, sizeof(*connector));
f453ba04
DA		 973}
974EXPORT_SYMBOL(drm_connector_cleanup);
975
10f637bf
DV		 976/**
977 * drm_connector_index - find the index of a registered connector
978 * @connector: connector to find index for
979 *
980 * Given a registered connector, return the index of that connector within a DRM
981 * device's list of connectors.
982 */
983unsigned int drm_connector_index(struct drm_connector *connector)
984{
985 unsigned int index = 0;
986 struct drm_connector *tmp;
c7eb76f4
DV		 987 struct drm_mode_config *config = &connector->dev->mode_config;
988
989 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
10f637bf
DV		 990
991 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
992 if (tmp == connector)
993 return index;
994
995 index++;
996 }
997
998 BUG();
999}
1000EXPORT_SYMBOL(drm_connector_index);
1001
34ea3d38
TW		 1002/**
1003 * drm_connector_register - register a connector
1004 * @connector: the connector to register
1005 *
1006 * Register userspace interfaces for a connector
1007 *
1008 * Returns:
1009 * Zero on success, error code on failure.
1010 */
1011int drm_connector_register(struct drm_connector *connector)
1012{
30f65707
TW		 1013 int ret;
1014
2ee39452
DA		 1015 drm_mode_object_register(connector->dev, &connector->base);
1016
30f65707
TW		 1017 ret = drm_sysfs_connector_add(connector);
1018 if (ret)
1019 return ret;
1020
1021 ret = drm_debugfs_connector_add(connector);
1022 if (ret) {
1023 drm_sysfs_connector_remove(connector);
1024 return ret;
1025 }
1026
1027 return 0;
34ea3d38
TW		 1028}
1029EXPORT_SYMBOL(drm_connector_register);
1030
1031/**
1032 * drm_connector_unregister - unregister a connector
1033 * @connector: the connector to unregister
1034 *
1035 * Unregister userspace interfaces for a connector
1036 */
1037void drm_connector_unregister(struct drm_connector *connector)
1038{
1039 drm_sysfs_connector_remove(connector);
30f65707 1040 drm_debugfs_connector_remove(connector);
34ea3d38
TW		 1041}
1042EXPORT_SYMBOL(drm_connector_unregister);
1043
1044
c8e32cc1
DV		 1045/**
1046 * drm_connector_unplug_all - unregister connector userspace interfaces
1047 * @dev: drm device
1048 *
1049 * This function unregisters all connector userspace interfaces in sysfs. Should
1050 * be call when the device is disconnected, e.g. from an usb driver's
1051 * ->disconnect callback.
1052 */
cbc7e221
DA		 1053void drm_connector_unplug_all(struct drm_device *dev)
1054{
1055 struct drm_connector *connector;
1056
1057 /* taking the mode config mutex ends up in a clash with sysfs */
1058 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
34ea3d38 1059 drm_connector_unregister(connector);
cbc7e221
DA		 1060
1061}
1062EXPORT_SYMBOL(drm_connector_unplug_all);
1063
c8e32cc1
DV		 1064/**
1065 * drm_encoder_init - Init a preallocated encoder
1066 * @dev: drm device
1067 * @encoder: the encoder to init
1068 * @funcs: callbacks for this encoder
1069 * @encoder_type: user visible type of the encoder
1070 *
1071 * Initialises a preallocated encoder. Encoder should be
1072 * subclassed as part of driver encoder objects.
1073 *
1074 * Returns:
1075 * Zero on success, error code on failure.
1076 */
6bfc56aa 1077int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 1078 struct drm_encoder *encoder,
1079 const struct drm_encoder_funcs *funcs,
1080 int encoder_type)
f453ba04 1081{
6bfc56aa
VS		 1082 int ret;
1083
84849903 1084 drm_modeset_lock_all(dev);
f453ba04 1085
6bfc56aa
VS		 1086 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1087 if (ret)
e5748946 1088 goto out_unlock;
f453ba04 1089
6bfc56aa 1090 encoder->dev = dev;
f453ba04
DA		 1091 encoder->encoder_type = encoder_type;
1092 encoder->funcs = funcs;
e5748946
JN		 1093 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1094 drm_encoder_enum_list[encoder_type].name,
1095 encoder->base.id);
1096 if (!encoder->name) {
1097 ret = -ENOMEM;
1098 goto out_put;
1099 }
f453ba04
DA		 1100
1101 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1102 dev->mode_config.num_encoder++;
1103
e5748946
JN		 1104out_put:
1105 if (ret)
1106 drm_mode_object_put(dev, &encoder->base);
1107
1108out_unlock:
84849903 1109 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 1110
1111 return ret;
f453ba04
DA		 1112}
1113EXPORT_SYMBOL(drm_encoder_init);
1114
c8e32cc1
DV		 1115/**
1116 * drm_encoder_cleanup - cleans up an initialised encoder
1117 * @encoder: encoder to cleanup
1118 *
1119 * Cleans up the encoder but doesn't free the object.
1120 */
f453ba04
DA		 1121void drm_encoder_cleanup(struct drm_encoder *encoder)
1122{
1123 struct drm_device *dev = encoder->dev;
4dfd909f 1124
84849903 1125 drm_modeset_lock_all(dev);
f453ba04 1126 drm_mode_object_put(dev, &encoder->base);
e5748946 1127 kfree(encoder->name);
f453ba04 1128 list_del(&encoder->head);
6380c509 1129 dev->mode_config.num_encoder--;
84849903 1130 drm_modeset_unlock_all(dev);
a18c0af1
TR		 1131
1132 memset(encoder, 0, sizeof(*encoder));
f453ba04
DA		 1133}
1134EXPORT_SYMBOL(drm_encoder_cleanup);
1135
35f2c3ae 1136/**
dc415ff9 1137 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1138 * @dev: DRM device
1139 * @plane: plane object to init
1140 * @possible_crtcs: bitmask of possible CRTCs
1141 * @funcs: callbacks for the new plane
1142 * @formats: array of supported formats (%DRM_FORMAT_*)
1143 * @format_count: number of elements in @formats
dc415ff9 1144 * @type: type of plane (overlay, primary, cursor)
35f2c3ae 1145 *
dc415ff9 1146 * Initializes a plane object of type @type.
35f2c3ae 1147 *
c8e32cc1 1148 * Returns:
35f2c3ae
VS		 1149 * Zero on success, error code on failure.
1150 */
dc415ff9
MR		 1151int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1152 unsigned long possible_crtcs,
1153 const struct drm_plane_funcs *funcs,
1154 const uint32_t *formats, uint32_t format_count,
1155 enum drm_plane_type type)
8cf5c917 1156{
6b4959f4 1157 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 1158 int ret;
1159
6bfc56aa
VS		 1160 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1161 if (ret)
baf698b0 1162 return ret;
6bfc56aa 1163
4d02e2de
DV		 1164 drm_modeset_lock_init(&plane->mutex);
1165
4d93914a 1166 plane->base.properties = &plane->properties;
8cf5c917 1167 plane->dev = dev;
8cf5c917 1168 plane->funcs = funcs;
2f6c5389
TR		 1169 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1170 GFP_KERNEL);
8cf5c917
JB		 1171 if (!plane->format_types) {
1172 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1173 drm_mode_object_put(dev, &plane->base);
baf698b0 1174 return -ENOMEM;
8cf5c917
JB		 1175 }
1176
308e5bcb 1177 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1178 plane->format_count = format_count;
1179 plane->possible_crtcs = possible_crtcs;
dc415ff9 1180 plane->type = type;
8cf5c917 1181
6b4959f4
RC		 1182 list_add_tail(&plane->head, &config->plane_list);
1183 config->num_total_plane++;
dc415ff9 1184 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
6b4959f4 1185 config->num_overlay_plane++;
8cf5c917 1186
9922ab5a 1187 drm_object_attach_property(&plane->base,
6b4959f4 1188 config->plane_type_property,
9922ab5a
RC		 1189 plane->type);
1190
6b4959f4
RC		 1191 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1192 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1193 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1194 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1195 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1196 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1197 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1198 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1199 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1200 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1201 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1202 }
1203
baf698b0 1204 return 0;
8cf5c917 1205}
dc415ff9
MR		 1206EXPORT_SYMBOL(drm_universal_plane_init);
1207
1208/**
1209 * drm_plane_init - Initialize a legacy plane
1210 * @dev: DRM device
1211 * @plane: plane object to init
1212 * @possible_crtcs: bitmask of possible CRTCs
1213 * @funcs: callbacks for the new plane
1214 * @formats: array of supported formats (%DRM_FORMAT_*)
1215 * @format_count: number of elements in @formats
1216 * @is_primary: plane type (primary vs overlay)
1217 *
1218 * Legacy API to initialize a DRM plane.
1219 *
1220 * New drivers should call drm_universal_plane_init() instead.
1221 *
1222 * Returns:
1223 * Zero on success, error code on failure.
1224 */
1225int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1226 unsigned long possible_crtcs,
1227 const struct drm_plane_funcs *funcs,
1228 const uint32_t *formats, uint32_t format_count,
1229 bool is_primary)
1230{
1231 enum drm_plane_type type;
1232
1233 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1234 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1235 formats, format_count, type);
1236}
8cf5c917
JB		 1237EXPORT_SYMBOL(drm_plane_init);
1238
35f2c3ae
VS		 1239/**
1240 * drm_plane_cleanup - Clean up the core plane usage
1241 * @plane: plane to cleanup
1242 *
1243 * This function cleans up @plane and removes it from the DRM mode setting
1244 * core. Note that the function does *not* free the plane structure itself,
1245 * this is the responsibility of the caller.
1246 */
8cf5c917
JB		 1247void drm_plane_cleanup(struct drm_plane *plane)
1248{
1249 struct drm_device *dev = plane->dev;
1250
84849903 1251 drm_modeset_lock_all(dev);
8cf5c917
JB		 1252 kfree(plane->format_types);
1253 drm_mode_object_put(dev, &plane->base);
dc415ff9
MR		 1254
1255 BUG_ON(list_empty(&plane->head));
1256
1257 list_del(&plane->head);
1258 dev->mode_config.num_total_plane--;
1259 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1260 dev->mode_config.num_overlay_plane--;
84849903 1261 drm_modeset_unlock_all(dev);
3009c037
TR		 1262
1263 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1264 if (plane->state && plane->funcs->atomic_destroy_state)
1265 plane->funcs->atomic_destroy_state(plane, plane->state);
a18c0af1
TR		 1266
1267 memset(plane, 0, sizeof(*plane));
8cf5c917
JB		 1268}
1269EXPORT_SYMBOL(drm_plane_cleanup);
1270
10f637bf
DV		 1271/**
1272 * drm_plane_index - find the index of a registered plane
1273 * @plane: plane to find index for
1274 *
1275 * Given a registered plane, return the index of that CRTC within a DRM
1276 * device's list of planes.
1277 */
1278unsigned int drm_plane_index(struct drm_plane *plane)
1279{
1280 unsigned int index = 0;
1281 struct drm_plane *tmp;
1282
1283 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1284 if (tmp == plane)
1285 return index;
1286
1287 index++;
1288 }
1289
1290 BUG();
1291}
1292EXPORT_SYMBOL(drm_plane_index);
1293
f81338a5
CK		 1294/**
1295 * drm_plane_from_index - find the registered plane at an index
1296 * @dev: DRM device
1297 * @idx: index of registered plane to find for
1298 *
1299 * Given a plane index, return the registered plane from DRM device's
1300 * list of planes with matching index.
1301 */
1302struct drm_plane *
1303drm_plane_from_index(struct drm_device *dev, int idx)
1304{
1305 struct drm_plane *plane;
1306 unsigned int i = 0;
1307
1308 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
1309 if (i == idx)
1310 return plane;
1311 i++;
1312 }
1313 return NULL;
1314}
1315EXPORT_SYMBOL(drm_plane_from_index);
1316
35f2c3ae
VS		 1317/**
1318 * drm_plane_force_disable - Forcibly disable a plane
1319 * @plane: plane to disable
1320 *
1321 * Forces the plane to be disabled.
1322 *
1323 * Used when the plane's current framebuffer is destroyed,
1324 * and when restoring fbdev mode.
1325 */
9125e618
VS		 1326void drm_plane_force_disable(struct drm_plane *plane)
1327{
1328 int ret;
1329
3d30a59b 1330 if (!plane->fb)
9125e618
VS		 1331 return;
1332
3d30a59b 1333 plane->old_fb = plane->fb;
9125e618 1334 ret = plane->funcs->disable_plane(plane);
731cce48 1335 if (ret) {
9125e618 1336 DRM_ERROR("failed to disable plane with busy fb\n");
3d30a59b 1337 plane->old_fb = NULL;
731cce48
DV		 1338 return;
1339 }
9125e618 1340 /* disconnect the plane from the fb and crtc: */
220dd2bc 1341 drm_framebuffer_unreference(plane->old_fb);
3d30a59b 1342 plane->old_fb = NULL;
9125e618
VS		 1343 plane->fb = NULL;
1344 plane->crtc = NULL;
1345}
1346EXPORT_SYMBOL(drm_plane_force_disable);
1347
6b4959f4 1348static int drm_mode_create_standard_properties(struct drm_device *dev)
f453ba04 1349{
356af0e1 1350 struct drm_property *prop;
f453ba04
DA		 1351
1352 /*
1353 * Standard properties (apply to all connectors)
1354 */
356af0e1 1355 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
f453ba04
DA		 1356 DRM_MODE_PROP_IMMUTABLE,
1357 "EDID", 0);
356af0e1
RC		 1358 if (!prop)
1359 return -ENOMEM;
1360 dev->mode_config.edid_property = prop;
f453ba04 1361
356af0e1 1362 prop = drm_property_create_enum(dev, 0,
4a67d391
SH		 1363 "DPMS", drm_dpms_enum_list,
1364 ARRAY_SIZE(drm_dpms_enum_list));
356af0e1
RC		 1365 if (!prop)
1366 return -ENOMEM;
1367 dev->mode_config.dpms_property = prop;
6f134d7b 1368
356af0e1
RC		 1369 prop = drm_property_create(dev,
1370 DRM_MODE_PROP_BLOB |
1371 DRM_MODE_PROP_IMMUTABLE,
1372 "PATH", 0);
1373 if (!prop)
1374 return -ENOMEM;
1375 dev->mode_config.path_property = prop;
f453ba04 1376
356af0e1
RC		 1377 prop = drm_property_create(dev,
1378 DRM_MODE_PROP_BLOB |
1379 DRM_MODE_PROP_IMMUTABLE,
1380 "TILE", 0);
1381 if (!prop)
1382 return -ENOMEM;
1383 dev->mode_config.tile_property = prop;
9922ab5a 1384
6b4959f4 1385 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
9922ab5a
RC		 1386 "type", drm_plane_type_enum_list,
1387 ARRAY_SIZE(drm_plane_type_enum_list));
6b4959f4
RC		 1388 if (!prop)
1389 return -ENOMEM;
1390 dev->mode_config.plane_type_property = prop;
1391
1392 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1393 "SRC_X", 0, UINT_MAX);
1394 if (!prop)
1395 return -ENOMEM;
1396 dev->mode_config.prop_src_x = prop;
1397
1398 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1399 "SRC_Y", 0, UINT_MAX);
1400 if (!prop)
1401 return -ENOMEM;
1402 dev->mode_config.prop_src_y = prop;
1403
1404 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1405 "SRC_W", 0, UINT_MAX);
1406 if (!prop)
1407 return -ENOMEM;
1408 dev->mode_config.prop_src_w = prop;
1409
1410 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1411 "SRC_H", 0, UINT_MAX);
1412 if (!prop)
1413 return -ENOMEM;
1414 dev->mode_config.prop_src_h = prop;
1415
1416 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1417 "CRTC_X", INT_MIN, INT_MAX);
1418 if (!prop)
1419 return -ENOMEM;
1420 dev->mode_config.prop_crtc_x = prop;
1421
1422 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1423 "CRTC_Y", INT_MIN, INT_MAX);
1424 if (!prop)
1425 return -ENOMEM;
1426 dev->mode_config.prop_crtc_y = prop;
1427
1428 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1429 "CRTC_W", 0, INT_MAX);
1430 if (!prop)
1431 return -ENOMEM;
1432 dev->mode_config.prop_crtc_w = prop;
1433
1434 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1435 "CRTC_H", 0, INT_MAX);
1436 if (!prop)
1437 return -ENOMEM;
1438 dev->mode_config.prop_crtc_h = prop;
1439
1440 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1441 "FB_ID", DRM_MODE_OBJECT_FB);
1442 if (!prop)
1443 return -ENOMEM;
1444 dev->mode_config.prop_fb_id = prop;
1445
1446 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1447 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1448 if (!prop)
1449 return -ENOMEM;
1450 dev->mode_config.prop_crtc_id = prop;
9922ab5a 1451
eab3bbef
DV		 1452 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1453 "ACTIVE");
1454 if (!prop)
1455 return -ENOMEM;
1456 dev->mode_config.prop_active = prop;
1457
955f3c33
DS		 1458 prop = drm_property_create(dev,
1459 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1460 "MODE_ID", 0);
1461 if (!prop)
1462 return -ENOMEM;
1463 dev->mode_config.prop_mode_id = prop;
1464
9922ab5a
RC		 1465 return 0;
1466}
1467
f453ba04
DA		 1468/**
1469 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1470 * @dev: DRM device
1471 *
1472 * Called by a driver the first time a DVI-I connector is made.
1473 */
1474int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1475{
1476 struct drm_property *dvi_i_selector;
1477 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1478
1479 if (dev->mode_config.dvi_i_select_subconnector_property)
1480 return 0;
1481
1482 dvi_i_selector =
4a67d391 1483 drm_property_create_enum(dev, 0,
f453ba04 1484 "select subconnector",
4a67d391 1485 drm_dvi_i_select_enum_list,
f453ba04 1486 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1487 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1488
4a67d391 1489 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1490 "subconnector",
4a67d391 1491 drm_dvi_i_subconnector_enum_list,
f453ba04 1492 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1493 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1494
1495 return 0;
1496}
1497EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1498
1499/**
1500 * drm_create_tv_properties - create TV specific connector properties
1501 * @dev: DRM device
1502 * @num_modes: number of different TV formats (modes) supported
1503 * @modes: array of pointers to strings containing name of each format
1504 *
1505 * Called by a driver's TV initialization routine, this function creates
1506 * the TV specific connector properties for a given device. Caller is
1507 * responsible for allocating a list of format names and passing them to
1508 * this routine.
1509 */
2f763312
TR		 1510int drm_mode_create_tv_properties(struct drm_device *dev,
1511 unsigned int num_modes,
f453ba04
DA		 1512 char *modes[])
1513{
1514 struct drm_property *tv_selector;
1515 struct drm_property *tv_subconnector;
2f763312 1516 unsigned int i;
f453ba04
DA		 1517
1518 if (dev->mode_config.tv_select_subconnector_property)
1519 return 0;
1520
1521 /*
1522 * Basic connector properties
1523 */
4a67d391 1524 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1525 "select subconnector",
4a67d391 1526 drm_tv_select_enum_list,
f453ba04 1527 ARRAY_SIZE(drm_tv_select_enum_list));
f453ba04
DA		 1528 dev->mode_config.tv_select_subconnector_property = tv_selector;
1529
1530 tv_subconnector =
4a67d391
SH		 1531 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1532 "subconnector",
1533 drm_tv_subconnector_enum_list,
f453ba04 1534 ARRAY_SIZE(drm_tv_subconnector_enum_list));
f453ba04
DA		 1535 dev->mode_config.tv_subconnector_property = tv_subconnector;
1536
1537 /*
1538 * Other, TV specific properties: margins & TV modes.
1539 */
1540 dev->mode_config.tv_left_margin_property =
d9bc3c02 1541 drm_property_create_range(dev, 0, "left margin", 0, 100);
f453ba04
DA		 1542
1543 dev->mode_config.tv_right_margin_property =
d9bc3c02 1544 drm_property_create_range(dev, 0, "right margin", 0, 100);
f453ba04
DA		 1545
1546 dev->mode_config.tv_top_margin_property =
d9bc3c02 1547 drm_property_create_range(dev, 0, "top margin", 0, 100);
f453ba04
DA		 1548
1549 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1550 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
f453ba04
DA		 1551
1552 dev->mode_config.tv_mode_property =
1553 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1554 "mode", num_modes);
1555 for (i = 0; i < num_modes; i++)
1556 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1557 i, modes[i]);
1558
b6b7902e 1559 dev->mode_config.tv_brightness_property =
d9bc3c02 1560 drm_property_create_range(dev, 0, "brightness", 0, 100);
b6b7902e
FJ		 1561
1562 dev->mode_config.tv_contrast_property =
d9bc3c02 1563 drm_property_create_range(dev, 0, "contrast", 0, 100);
b6b7902e
FJ		 1564
1565 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1566 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
b6b7902e 1567
a75f0236 1568 dev->mode_config.tv_overscan_property =
d9bc3c02 1569 drm_property_create_range(dev, 0, "overscan", 0, 100);
a75f0236
FJ		 1570
1571 dev->mode_config.tv_saturation_property =
d9bc3c02 1572 drm_property_create_range(dev, 0, "saturation", 0, 100);
a75f0236
FJ		 1573
1574 dev->mode_config.tv_hue_property =
d9bc3c02 1575 drm_property_create_range(dev, 0, "hue", 0, 100);
a75f0236 1576
f453ba04
DA		 1577 return 0;
1578}
1579EXPORT_SYMBOL(drm_mode_create_tv_properties);
1580
1581/**
1582 * drm_mode_create_scaling_mode_property - create scaling mode property
1583 * @dev: DRM device
1584 *
1585 * Called by a driver the first time it's needed, must be attached to desired
1586 * connectors.
1587 */
1588int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1589{
1590 struct drm_property *scaling_mode;
f453ba04
DA		 1591
1592 if (dev->mode_config.scaling_mode_property)
1593 return 0;
1594
1595 scaling_mode =
4a67d391
SH		 1596 drm_property_create_enum(dev, 0, "scaling mode",
1597 drm_scaling_mode_enum_list,
f453ba04 1598 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1599
1600 dev->mode_config.scaling_mode_property = scaling_mode;
1601
1602 return 0;
1603}
1604EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1605
ff587e45
VK		 1606/**
1607 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1608 * @dev: DRM device
1609 *
1610 * Called by a driver the first time it's needed, must be attached to desired
1611 * connectors.
1612 *
1613 * Returns:
1a498633 1614 * Zero on success, negative errno on failure.
ff587e45
VK		 1615 */
1616int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1617{
1618 if (dev->mode_config.aspect_ratio_property)
1619 return 0;
1620
1621 dev->mode_config.aspect_ratio_property =
1622 drm_property_create_enum(dev, 0, "aspect ratio",
1623 drm_aspect_ratio_enum_list,
1624 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1625
1626 if (dev->mode_config.aspect_ratio_property == NULL)
1627 return -ENOMEM;
1628
1629 return 0;
1630}
1631EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1632
884840aa
JB		 1633/**
1634 * drm_mode_create_dirty_property - create dirty property
1635 * @dev: DRM device
1636 *
1637 * Called by a driver the first time it's needed, must be attached to desired
1638 * connectors.
1639 */
1640int drm_mode_create_dirty_info_property(struct drm_device *dev)
1641{
1642 struct drm_property *dirty_info;
884840aa
JB		 1643
1644 if (dev->mode_config.dirty_info_property)
1645 return 0;
1646
1647 dirty_info =
4a67d391 1648 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1649 "dirty",
4a67d391 1650 drm_dirty_info_enum_list,
884840aa 1651 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1652 dev->mode_config.dirty_info_property = dirty_info;
1653
1654 return 0;
1655}
1656EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1657
5bb2bbf5
DA		 1658/**
1659 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1660 * @dev: DRM device
1661 *
1662 * Create the the suggested x/y offset property for connectors.
1663 */
1664int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1665{
1666 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1667 return 0;
1668
1669 dev->mode_config.suggested_x_property =
1670 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1671
1672 dev->mode_config.suggested_y_property =
1673 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1674
1675 if (dev->mode_config.suggested_x_property == NULL ||
1676 dev->mode_config.suggested_y_property == NULL)
1677 return -ENOMEM;
1678 return 0;
1679}
1680EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1681
ea9cbb06 1682static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
f453ba04
DA		 1683{
1684 uint32_t total_objects = 0;
1685
1686 total_objects += dev->mode_config.num_crtc;
1687 total_objects += dev->mode_config.num_connector;
1688 total_objects += dev->mode_config.num_encoder;
1689
bd3f0ff9 1690 group->id_list = kcalloc(total_objects, sizeof(uint32_t), GFP_KERNEL);
f453ba04
DA		 1691 if (!group->id_list)
1692 return -ENOMEM;
1693
1694 group->num_crtcs = 0;
1695 group->num_connectors = 0;
1696 group->num_encoders = 0;
1697 return 0;
1698}
1699
ad222799
DA		 1700void drm_mode_group_destroy(struct drm_mode_group *group)
1701{
1702 kfree(group->id_list);
1703 group->id_list = NULL;
1704}
1705
c8e32cc1
DV		 1706/*
1707 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1708 * the drm core's responsibility to set up mode control groups.
1709 */
f453ba04
DA		 1710int drm_mode_group_init_legacy_group(struct drm_device *dev,
1711 struct drm_mode_group *group)
1712{
1713 struct drm_crtc *crtc;
1714 struct drm_encoder *encoder;
1715 struct drm_connector *connector;
1716 int ret;
1717
0cc0b223
TR		 1718 ret = drm_mode_group_init(dev, group);
1719 if (ret)
f453ba04
DA		 1720 return ret;
1721
1722 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1723 group->id_list[group->num_crtcs++] = crtc->base.id;
1724
1725 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1726 group->id_list[group->num_crtcs + group->num_encoders++] =
1727 encoder->base.id;
1728
1729 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1730 group->id_list[group->num_crtcs + group->num_encoders +
1731 group->num_connectors++] = connector->base.id;
1732
1733 return 0;
1734}
9c1dfc55 1735EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
f453ba04 1736
2390cd11
DA		 1737void drm_reinit_primary_mode_group(struct drm_device *dev)
1738{
1739 drm_modeset_lock_all(dev);
1740 drm_mode_group_destroy(&dev->primary->mode_group);
1741 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1742 drm_modeset_unlock_all(dev);
1743}
1744EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1745
f453ba04
DA		 1746/**
1747 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1748 * @dev: drm device for the ioctl
1749 * @data: data pointer for the ioctl
1750 * @file_priv: drm file for the ioctl call
f453ba04 1751 *
f453ba04
DA		 1752 * Construct a set of configuration description structures and return
1753 * them to the user, including CRTC, connector and framebuffer configuration.
1754 *
1755 * Called by the user via ioctl.
1756 *
c8e32cc1 1757 * Returns:
1a498633 1758 * Zero on success, negative errno on failure.
f453ba04
DA		 1759 */
1760int drm_mode_getresources(struct drm_device *dev, void *data,
1761 struct drm_file *file_priv)
1762{
1763 struct drm_mode_card_res *card_res = data;
1764 struct list_head *lh;
1765 struct drm_framebuffer *fb;
1766 struct drm_connector *connector;
1767 struct drm_crtc *crtc;
1768 struct drm_encoder *encoder;
1769 int ret = 0;
1770 int connector_count = 0;
1771 int crtc_count = 0;
1772 int fb_count = 0;
1773 int encoder_count = 0;
1774 int copied = 0, i;
1775 uint32_t __user *fb_id;
1776 uint32_t __user *crtc_id;
1777 uint32_t __user *connector_id;
1778 uint32_t __user *encoder_id;
1779 struct drm_mode_group *mode_group;
1780
fb3b06c8
DA		 1781 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1782 return -EINVAL;
1783
f453ba04 1784
4b096ac1 1785 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1786 /*
1787 * For the non-control nodes we need to limit the list of resources
1788 * by IDs in the group list for this node
1789 */
1790 list_for_each(lh, &file_priv->fbs)
1791 fb_count++;
1792
4b096ac1
DV		 1793 /* handle this in 4 parts */
1794 /* FBs */
1795 if (card_res->count_fbs >= fb_count) {
1796 copied = 0;
1797 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1798 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1799 if (put_user(fb->base.id, fb_id + copied)) {
1800 mutex_unlock(&file_priv->fbs_lock);
1801 return -EFAULT;
1802 }
1803 copied++;
1804 }
1805 }
1806 card_res->count_fbs = fb_count;
1807 mutex_unlock(&file_priv->fbs_lock);
1808
fcf93f69
DV		 1809 /* mode_config.mutex protects the connector list against e.g. DP MST
1810 * connector hot-adding. CRTC/Plane lists are invariant. */
1811 mutex_lock(&dev->mode_config.mutex);
43683057 1812 if (!drm_is_primary_client(file_priv)) {
f453ba04 1813
09f308f7 1814 mode_group = NULL;
f453ba04
DA		 1815 list_for_each(lh, &dev->mode_config.crtc_list)
1816 crtc_count++;
1817
1818 list_for_each(lh, &dev->mode_config.connector_list)
1819 connector_count++;
1820
1821 list_for_each(lh, &dev->mode_config.encoder_list)
1822 encoder_count++;
1823 } else {
1824
09f308f7 1825 mode_group = &file_priv->master->minor->mode_group;
f453ba04
DA		 1826 crtc_count = mode_group->num_crtcs;
1827 connector_count = mode_group->num_connectors;
1828 encoder_count = mode_group->num_encoders;
1829 }
1830
1831 card_res->max_height = dev->mode_config.max_height;
1832 card_res->min_height = dev->mode_config.min_height;
1833 card_res->max_width = dev->mode_config.max_width;
1834 card_res->min_width = dev->mode_config.min_width;
1835
f453ba04
DA		 1836 /* CRTCs */
1837 if (card_res->count_crtcs >= crtc_count) {
1838 copied = 0;
1839 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
09f308f7 1840 if (!mode_group) {
f453ba04
DA		 1841 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1842 head) {
9440106b 1843 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1844 if (put_user(crtc->base.id, crtc_id + copied)) {
1845 ret = -EFAULT;
1846 goto out;
1847 }
1848 copied++;
1849 }
1850 } else {
1851 for (i = 0; i < mode_group->num_crtcs; i++) {
1852 if (put_user(mode_group->id_list[i],
1853 crtc_id + copied)) {
1854 ret = -EFAULT;
1855 goto out;
1856 }
1857 copied++;
1858 }
1859 }
1860 }
1861 card_res->count_crtcs = crtc_count;
1862
1863 /* Encoders */
1864 if (card_res->count_encoders >= encoder_count) {
1865 copied = 0;
1866 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
09f308f7 1867 if (!mode_group) {
f453ba04
DA		 1868 list_for_each_entry(encoder,
1869 &dev->mode_config.encoder_list,
1870 head) {
9440106b 1871 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
83a8cfd3 1872 encoder->name);
f453ba04
DA		 1873 if (put_user(encoder->base.id, encoder_id +
1874 copied)) {
1875 ret = -EFAULT;
1876 goto out;
1877 }
1878 copied++;
1879 }
1880 } else {
1881 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1882 if (put_user(mode_group->id_list[i],
1883 encoder_id + copied)) {
1884 ret = -EFAULT;
1885 goto out;
1886 }
1887 copied++;
1888 }
1889
1890 }
1891 }
1892 card_res->count_encoders = encoder_count;
1893
1894 /* Connectors */
1895 if (card_res->count_connectors >= connector_count) {
1896 copied = 0;
1897 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
09f308f7 1898 if (!mode_group) {
f453ba04
DA		 1899 list_for_each_entry(connector,
1900 &dev->mode_config.connector_list,
1901 head) {
9440106b
JG		 1902 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1903 connector->base.id,
25933820 1904 connector->name);
f453ba04
DA		 1905 if (put_user(connector->base.id,
1906 connector_id + copied)) {
1907 ret = -EFAULT;
1908 goto out;
1909 }
1910 copied++;
1911 }
1912 } else {
1913 int start = mode_group->num_crtcs +
1914 mode_group->num_encoders;
1915 for (i = start; i < start + mode_group->num_connectors; i++) {
1916 if (put_user(mode_group->id_list[i],
1917 connector_id + copied)) {
1918 ret = -EFAULT;
1919 goto out;
1920 }
1921 copied++;
1922 }
1923 }
1924 }
1925 card_res->count_connectors = connector_count;
1926
9440106b 1927 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1928 card_res->count_connectors, card_res->count_encoders);
1929
1930out:
fcf93f69 1931 mutex_unlock(&dev->mode_config.mutex);
f453ba04
DA		 1932 return ret;
1933}
1934
1935/**
1936 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1937 * @dev: drm device for the ioctl
1938 * @data: data pointer for the ioctl
1939 * @file_priv: drm file for the ioctl call
f453ba04 1940 *
f453ba04
DA		 1941 * Construct a CRTC configuration structure to return to the user.
1942 *
1943 * Called by the user via ioctl.
1944 *
c8e32cc1 1945 * Returns:
1a498633 1946 * Zero on success, negative errno on failure.
f453ba04
DA		 1947 */
1948int drm_mode_getcrtc(struct drm_device *dev,
1949 void *data, struct drm_file *file_priv)
1950{
1951 struct drm_mode_crtc *crtc_resp = data;
1952 struct drm_crtc *crtc;
f453ba04 1953
fb3b06c8
DA		 1954 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1955 return -EINVAL;
1956
a2b34e22 1957 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
fcf93f69
DV		 1958 if (!crtc)
1959 return -ENOENT;
f453ba04 1960
fcf93f69 1961 drm_modeset_lock_crtc(crtc, crtc->primary);
f453ba04 1962 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 1963 if (crtc->primary->fb)
1964 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 1965 else
1966 crtc_resp->fb_id = 0;
1967
31c946e8
DV		 1968 if (crtc->state) {
1969 crtc_resp->x = crtc->primary->state->src_x >> 16;
1970 crtc_resp->y = crtc->primary->state->src_y >> 16;
1971 if (crtc->state->enable) {
934a8a89 1972 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
31c946e8 1973 crtc_resp->mode_valid = 1;
f453ba04 1974
31c946e8
DV		 1975 } else {
1976 crtc_resp->mode_valid = 0;
1977 }
f453ba04 1978 } else {
31c946e8
DV		 1979 crtc_resp->x = crtc->x;
1980 crtc_resp->y = crtc->y;
1981 if (crtc->enabled) {
934a8a89 1982 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
31c946e8
DV		 1983 crtc_resp->mode_valid = 1;
1984
1985 } else {
1986 crtc_resp->mode_valid = 0;
1987 }
f453ba04 1988 }
fcf93f69 1989 drm_modeset_unlock_crtc(crtc);
f453ba04 1990
baf698b0 1991 return 0;
f453ba04
DA		 1992}
1993
61d8e328
DL		 1994static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1995 const struct drm_file *file_priv)
1996{
1997 /*
1998 * If user-space hasn't configured the driver to expose the stereo 3D
1999 * modes, don't expose them.
2000 */
2001 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2002 return false;
2003
2004 return true;
2005}
2006
abd69c55
DV		 2007static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2008{
2009 /* For atomic drivers only state objects are synchronously updated and
2010 * protected by modeset locks, so check those first. */
2011 if (connector->state)
2012 return connector->state->best_encoder;
2013 return connector->encoder;
2014}
2015
95cbf110 2016/* helper for getconnector and getproperties ioctls */
88a48e29 2017static int get_properties(struct drm_mode_object *obj, bool atomic,
95cbf110
RC		 2018 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2019 uint32_t *arg_count_props)
2020{
88a48e29
RC		 2021 int props_count;
2022 int i, ret, copied;
2023
2024 props_count = obj->properties->count;
2025 if (!atomic)
2026 props_count -= obj->properties->atomic_count;
95cbf110
RC		 2027
2028 if ((*arg_count_props >= props_count) && props_count) {
88a48e29 2029 for (i = 0, copied = 0; copied < props_count; i++) {
95cbf110
RC		 2030 struct drm_property *prop = obj->properties->properties[i];
2031 uint64_t val;
2032
88a48e29
RC		 2033 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2034 continue;
2035
95cbf110
RC		 2036 ret = drm_object_property_get_value(obj, prop, &val);
2037 if (ret)
2038 return ret;
2039
2040 if (put_user(prop->base.id, prop_ptr + copied))
2041 return -EFAULT;
2042
2043 if (put_user(val, prop_values + copied))
2044 return -EFAULT;
2045
2046 copied++;
2047 }
2048 }
2049 *arg_count_props = props_count;
2050
2051 return 0;
2052}
2053
f453ba04
DA		 2054/**
2055 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 2056 * @dev: drm device for the ioctl
2057 * @data: data pointer for the ioctl
2058 * @file_priv: drm file for the ioctl call
f453ba04 2059 *
f453ba04
DA		 2060 * Construct a connector configuration structure to return to the user.
2061 *
2062 * Called by the user via ioctl.
2063 *
c8e32cc1 2064 * Returns:
1a498633 2065 * Zero on success, negative errno on failure.
f453ba04
DA		 2066 */
2067int drm_mode_getconnector(struct drm_device *dev, void *data,
2068 struct drm_file *file_priv)
2069{
2070 struct drm_mode_get_connector *out_resp = data;
f453ba04 2071 struct drm_connector *connector;
abd69c55 2072 struct drm_encoder *encoder;
f453ba04
DA		 2073 struct drm_display_mode *mode;
2074 int mode_count = 0;
f453ba04
DA		 2075 int encoders_count = 0;
2076 int ret = 0;
2077 int copied = 0;
2078 int i;
2079 struct drm_mode_modeinfo u_mode;
2080 struct drm_mode_modeinfo __user *mode_ptr;
f453ba04
DA		 2081 uint32_t __user *encoder_ptr;
2082
fb3b06c8
DA		 2083 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2084 return -EINVAL;
2085
f453ba04
DA		 2086 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2087
9440106b 2088 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 2089
7b24056b 2090 mutex_lock(&dev->mode_config.mutex);
f453ba04 2091
a2b34e22
RC		 2092 connector = drm_connector_find(dev, out_resp->connector_id);
2093 if (!connector) {
f27657f2 2094 ret = -ENOENT;
04bdf441 2095 goto out_unlock;
f453ba04 2096 }
f453ba04 2097
01073b08
TR		 2098 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2099 if (connector->encoder_ids[i] != 0)
f453ba04 2100 encoders_count++;
f453ba04
DA		 2101
2102 if (out_resp->count_modes == 0) {
2103 connector->funcs->fill_modes(connector,
2104 dev->mode_config.max_width,
2105 dev->mode_config.max_height);
2106 }
2107
2108 /* delayed so we get modes regardless of pre-fill_modes state */
2109 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 2110 if (drm_mode_expose_to_userspace(mode, file_priv))
2111 mode_count++;
f453ba04
DA		 2112
2113 out_resp->connector_id = connector->base.id;
2114 out_resp->connector_type = connector->connector_type;
2115 out_resp->connector_type_id = connector->connector_type_id;
2116 out_resp->mm_width = connector->display_info.width_mm;
2117 out_resp->mm_height = connector->display_info.height_mm;
2118 out_resp->subpixel = connector->display_info.subpixel_order;
2119 out_resp->connection = connector->status;
2caa80e7
DV		 2120
2121 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2122 encoder = drm_connector_get_encoder(connector);
2123 if (encoder)
2124 out_resp->encoder_id = encoder->base.id;
f453ba04
DA		 2125 else
2126 out_resp->encoder_id = 0;
2127
2128 /*
2129 * This ioctl is called twice, once to determine how much space is
2130 * needed, and the 2nd time to fill it.
2131 */
2132 if ((out_resp->count_modes >= mode_count) && mode_count) {
2133 copied = 0;
81f6c7f8 2134 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 2135 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 2136 if (!drm_mode_expose_to_userspace(mode, file_priv))
2137 continue;
2138
934a8a89 2139 drm_mode_convert_to_umode(&u_mode, mode);
f453ba04
DA		 2140 if (copy_to_user(mode_ptr + copied,
2141 &u_mode, sizeof(u_mode))) {
2142 ret = -EFAULT;
2143 goto out;
2144 }
2145 copied++;
2146 }
2147 }
2148 out_resp->count_modes = mode_count;
2149
88a48e29 2150 ret = get_properties(&connector->base, file_priv->atomic,
95cbf110
RC		 2151 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2152 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2153 &out_resp->count_props);
2154 if (ret)
2155 goto out;
f453ba04
DA		 2156
2157 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2158 copied = 0;
81f6c7f8 2159 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 2160 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2161 if (connector->encoder_ids[i] != 0) {
2162 if (put_user(connector->encoder_ids[i],
2163 encoder_ptr + copied)) {
2164 ret = -EFAULT;
2165 goto out;
2166 }
2167 copied++;
2168 }
2169 }
2170 }
2171 out_resp->count_encoders = encoders_count;
2172
2173out:
ccfc0865 2174 drm_modeset_unlock(&dev->mode_config.connection_mutex);
04bdf441
TR		 2175
2176out_unlock:
7b24056b
DV		 2177 mutex_unlock(&dev->mode_config.mutex);
2178
f453ba04
DA		 2179 return ret;
2180}
2181
abd69c55
DV		 2182static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2183{
2184 struct drm_connector *connector;
2185 struct drm_device *dev = encoder->dev;
2186 bool uses_atomic = false;
2187
2188 /* For atomic drivers only state objects are synchronously updated and
2189 * protected by modeset locks, so check those first. */
2190 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2191 if (!connector->state)
2192 continue;
2193
2194 uses_atomic = true;
2195
2196 if (connector->state->best_encoder != encoder)
2197 continue;
2198
2199 return connector->state->crtc;
2200 }
2201
2202 /* Don't return stale data (e.g. pending async disable). */
2203 if (uses_atomic)
2204 return NULL;
2205
2206 return encoder->crtc;
2207}
2208
c8e32cc1
DV		 2209/**
2210 * drm_mode_getencoder - get encoder configuration
2211 * @dev: drm device for the ioctl
2212 * @data: data pointer for the ioctl
2213 * @file_priv: drm file for the ioctl call
2214 *
2215 * Construct a encoder configuration structure to return to the user.
2216 *
2217 * Called by the user via ioctl.
2218 *
2219 * Returns:
1a498633 2220 * Zero on success, negative errno on failure.
c8e32cc1 2221 */
f453ba04
DA		 2222int drm_mode_getencoder(struct drm_device *dev, void *data,
2223 struct drm_file *file_priv)
2224{
2225 struct drm_mode_get_encoder *enc_resp = data;
f453ba04 2226 struct drm_encoder *encoder;
abd69c55 2227 struct drm_crtc *crtc;
f453ba04 2228
fb3b06c8
DA		 2229 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2230 return -EINVAL;
2231
a2b34e22 2232 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
fcf93f69
DV		 2233 if (!encoder)
2234 return -ENOENT;
f453ba04 2235
fcf93f69 2236 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2237 crtc = drm_encoder_get_crtc(encoder);
2238 if (crtc)
2239 enc_resp->crtc_id = crtc->base.id;
f453ba04
DA		 2240 else
2241 enc_resp->crtc_id = 0;
fcf93f69
DV		 2242 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2243
f453ba04
DA		 2244 enc_resp->encoder_type = encoder->encoder_type;
2245 enc_resp->encoder_id = encoder->base.id;
2246 enc_resp->possible_crtcs = encoder->possible_crtcs;
2247 enc_resp->possible_clones = encoder->possible_clones;
2248
baf698b0 2249 return 0;
f453ba04
DA		 2250}
2251
8cf5c917 2252/**
c8e32cc1 2253 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 2254 * @dev: DRM device
2255 * @data: ioctl data
2256 * @file_priv: DRM file info
2257 *
c8e32cc1
DV		 2258 * Construct a list of plane ids to return to the user.
2259 *
2260 * Called by the user via ioctl.
2261 *
2262 * Returns:
1a498633 2263 * Zero on success, negative errno on failure.
8cf5c917
JB		 2264 */
2265int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 2266 struct drm_file *file_priv)
8cf5c917
JB		 2267{
2268 struct drm_mode_get_plane_res *plane_resp = data;
2269 struct drm_mode_config *config;
2270 struct drm_plane *plane;
2271 uint32_t __user *plane_ptr;
fcf93f69 2272 int copied = 0;
681e7ec7 2273 unsigned num_planes;
8cf5c917
JB		 2274
2275 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2276 return -EINVAL;
2277
8cf5c917
JB		 2278 config = &dev->mode_config;
2279
681e7ec7
MR		 2280 if (file_priv->universal_planes)
2281 num_planes = config->num_total_plane;
2282 else
2283 num_planes = config->num_overlay_plane;
2284
8cf5c917
JB		 2285 /*
2286 * This ioctl is called twice, once to determine how much space is
2287 * needed, and the 2nd time to fill it.
2288 */
681e7ec7
MR		 2289 if (num_planes &&
2290 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 2291 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917 2292
fcf93f69 2293 /* Plane lists are invariant, no locking needed. */
8cf5c917 2294 list_for_each_entry(plane, &config->plane_list, head) {
681e7ec7
MR		 2295 /*
2296 * Unless userspace set the 'universal planes'
2297 * capability bit, only advertise overlays.
2298 */
2299 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2300 !file_priv->universal_planes)
e27dde3e
MR		 2301 continue;
2302
fcf93f69
DV		 2303 if (put_user(plane->base.id, plane_ptr + copied))
2304 return -EFAULT;
8cf5c917
JB		 2305 copied++;
2306 }
2307 }
681e7ec7 2308 plane_resp->count_planes = num_planes;
8cf5c917 2309
fcf93f69 2310 return 0;
8cf5c917
JB		 2311}
2312
2313/**
c8e32cc1 2314 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2315 * @dev: DRM device
2316 * @data: ioctl data
2317 * @file_priv: DRM file info
2318 *
c8e32cc1
DV		 2319 * Construct a plane configuration structure to return to the user.
2320 *
2321 * Called by the user via ioctl.
2322 *
2323 * Returns:
1a498633 2324 * Zero on success, negative errno on failure.
8cf5c917
JB		 2325 */
2326int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2327 struct drm_file *file_priv)
8cf5c917
JB		 2328{
2329 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2330 struct drm_plane *plane;
2331 uint32_t __user *format_ptr;
8cf5c917
JB		 2332
2333 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2334 return -EINVAL;
2335
a2b34e22 2336 plane = drm_plane_find(dev, plane_resp->plane_id);
fcf93f69
DV		 2337 if (!plane)
2338 return -ENOENT;
8cf5c917 2339
fcf93f69 2340 drm_modeset_lock(&plane->mutex, NULL);
8cf5c917
JB		 2341 if (plane->crtc)
2342 plane_resp->crtc_id = plane->crtc->base.id;
2343 else
2344 plane_resp->crtc_id = 0;
2345
2346 if (plane->fb)
2347 plane_resp->fb_id = plane->fb->base.id;
2348 else
2349 plane_resp->fb_id = 0;
fcf93f69 2350 drm_modeset_unlock(&plane->mutex);
8cf5c917
JB		 2351
2352 plane_resp->plane_id = plane->base.id;
2353 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2354 plane_resp->gamma_size = 0;
8cf5c917
JB		 2355
2356 /*
2357 * This ioctl is called twice, once to determine how much space is
2358 * needed, and the 2nd time to fill it.
2359 */
2360 if (plane->format_count &&
2361 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2362 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2363 if (copy_to_user(format_ptr,
2364 plane->format_types,
2365 sizeof(uint32_t) * plane->format_count)) {
fcf93f69 2366 return -EFAULT;
8cf5c917
JB		 2367 }
2368 }
2369 plane_resp->count_format_types = plane->format_count;
2370
baf698b0 2371 return 0;
8cf5c917
JB		 2372}
2373
ead8610d
LP		 2374/**
2375 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2376 * @plane: plane to check for format support
2377 * @format: the pixel format
2378 *
2379 * Returns:
2380 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2381 * otherwise.
2382 */
2383int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2384{
2385 unsigned int i;
2386
2387 for (i = 0; i < plane->format_count; i++) {
2388 if (format == plane->format_types[i])
2389 return 0;
2390 }
2391
2392 return -EINVAL;
2393}
2394
b36552b3
MR		 2395/*
2396 * setplane_internal - setplane handler for internal callers
8cf5c917 2397 *
b36552b3
MR		 2398 * Note that we assume an extra reference has already been taken on fb. If the
2399 * update fails, this reference will be dropped before return; if it succeeds,
2400 * the previous framebuffer (if any) will be unreferenced instead.
c8e32cc1 2401 *
b36552b3 2402 * src_{x,y,w,h} are provided in 16.16 fixed point format
8cf5c917 2403 */
f2b50c11
DV		 2404static int __setplane_internal(struct drm_plane *plane,
2405 struct drm_crtc *crtc,
2406 struct drm_framebuffer *fb,
2407 int32_t crtc_x, int32_t crtc_y,
2408 uint32_t crtc_w, uint32_t crtc_h,
2409 /* src_{x,y,w,h} values are 16.16 fixed point */
2410 uint32_t src_x, uint32_t src_y,
2411 uint32_t src_w, uint32_t src_h)
8cf5c917 2412{
8cf5c917 2413 int ret = 0;
42ef8789 2414 unsigned int fb_width, fb_height;
8cf5c917 2415
8cf5c917 2416 /* No fb means shut it down */
b36552b3 2417 if (!fb) {
3d30a59b 2418 plane->old_fb = plane->fb;
731cce48
DV		 2419 ret = plane->funcs->disable_plane(plane);
2420 if (!ret) {
2421 plane->crtc = NULL;
2422 plane->fb = NULL;
2423 } else {
3d30a59b 2424 plane->old_fb = NULL;
731cce48 2425 }
8cf5c917
JB		 2426 goto out;
2427 }
2428
7f994f3f
MR		 2429 /* Check whether this plane is usable on this CRTC */
2430 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2431 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2432 ret = -EINVAL;
2433 goto out;
2434 }
2435
62443be6 2436 /* Check whether this plane supports the fb pixel format. */
ead8610d
LP		 2437 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2438 if (ret) {
6ba6d03e
VS		 2439 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2440 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2441 goto out;
2442 }
2443
3968be94
MR		 2444 /* Give drivers some help against integer overflows */
2445 if (crtc_w > INT_MAX ||
2446 crtc_x > INT_MAX - (int32_t) crtc_w ||
2447 crtc_h > INT_MAX ||
2448 crtc_y > INT_MAX - (int32_t) crtc_h) {
2449 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2450 crtc_w, crtc_h, crtc_x, crtc_y);
2451 return -ERANGE;
2452 }
2453
2454
42ef8789
VS		 2455 fb_width = fb->width << 16;
2456 fb_height = fb->height << 16;
2457
2458 /* Make sure source coordinates are inside the fb. */
b36552b3
MR		 2459 if (src_w > fb_width ||
2460 src_x > fb_width - src_w ||
2461 src_h > fb_height ||
2462 src_y > fb_height - src_h) {
42ef8789
VS		 2463 DRM_DEBUG_KMS("Invalid source coordinates "
2464 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
b36552b3
MR		 2465 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2466 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2467 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2468 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
42ef8789
VS		 2469 ret = -ENOSPC;
2470 goto out;
2471 }
2472
3d30a59b 2473 plane->old_fb = plane->fb;
8cf5c917 2474 ret = plane->funcs->update_plane(plane, crtc, fb,
b36552b3
MR		 2475 crtc_x, crtc_y, crtc_w, crtc_h,
2476 src_x, src_y, src_w, src_h);
8cf5c917
JB		 2477 if (!ret) {
2478 plane->crtc = crtc;
2479 plane->fb = fb;
35f8badc 2480 fb = NULL;
0fe27f06 2481 } else {
3d30a59b 2482 plane->old_fb = NULL;
8cf5c917
JB		 2483 }
2484
2485out:
6c2a7532
DV		 2486 if (fb)
2487 drm_framebuffer_unreference(fb);
3d30a59b
DV		 2488 if (plane->old_fb)
2489 drm_framebuffer_unreference(plane->old_fb);
2490 plane->old_fb = NULL;
8cf5c917
JB		 2491
2492 return ret;
f2b50c11 2493}
b36552b3 2494
f2b50c11
DV		 2495static int setplane_internal(struct drm_plane *plane,
2496 struct drm_crtc *crtc,
2497 struct drm_framebuffer *fb,
2498 int32_t crtc_x, int32_t crtc_y,
2499 uint32_t crtc_w, uint32_t crtc_h,
2500 /* src_{x,y,w,h} values are 16.16 fixed point */
2501 uint32_t src_x, uint32_t src_y,
2502 uint32_t src_w, uint32_t src_h)
2503{
2504 int ret;
2505
2506 drm_modeset_lock_all(plane->dev);
2507 ret = __setplane_internal(plane, crtc, fb,
2508 crtc_x, crtc_y, crtc_w, crtc_h,
2509 src_x, src_y, src_w, src_h);
2510 drm_modeset_unlock_all(plane->dev);
2511
2512 return ret;
b36552b3
MR		 2513}
2514
2515/**
2516 * drm_mode_setplane - configure a plane's configuration
2517 * @dev: DRM device
2518 * @data: ioctl data*
2519 * @file_priv: DRM file info
2520 *
2521 * Set plane configuration, including placement, fb, scaling, and other factors.
2522 * Or pass a NULL fb to disable (planes may be disabled without providing a
2523 * valid crtc).
2524 *
2525 * Returns:
1a498633 2526 * Zero on success, negative errno on failure.
b36552b3
MR		 2527 */
2528int drm_mode_setplane(struct drm_device *dev, void *data,
2529 struct drm_file *file_priv)
2530{
2531 struct drm_mode_set_plane *plane_req = data;
b36552b3
MR		 2532 struct drm_plane *plane;
2533 struct drm_crtc *crtc = NULL;
2534 struct drm_framebuffer *fb = NULL;
2535
2536 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2537 return -EINVAL;
2538
b36552b3
MR		 2539 /*
2540 * First, find the plane, crtc, and fb objects. If not available,
2541 * we don't bother to call the driver.
2542 */
933f622f
RC		 2543 plane = drm_plane_find(dev, plane_req->plane_id);
2544 if (!plane) {
b36552b3
MR		 2545 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2546 plane_req->plane_id);
2547 return -ENOENT;
2548 }
b36552b3
MR		 2549
2550 if (plane_req->fb_id) {
2551 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2552 if (!fb) {
2553 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2554 plane_req->fb_id);
2555 return -ENOENT;
2556 }
2557
933f622f
RC		 2558 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2559 if (!crtc) {
b36552b3
MR		 2560 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2561 plane_req->crtc_id);
2562 return -ENOENT;
2563 }
b36552b3
MR		 2564 }
2565
161d0dc1
MR		 2566 /*
2567 * setplane_internal will take care of deref'ing either the old or new
2568 * framebuffer depending on success.
2569 */
17cfd91f 2570 return setplane_internal(plane, crtc, fb,
b36552b3
MR		 2571 plane_req->crtc_x, plane_req->crtc_y,
2572 plane_req->crtc_w, plane_req->crtc_h,
2573 plane_req->src_x, plane_req->src_y,
2574 plane_req->src_w, plane_req->src_h);
8cf5c917
JB		 2575}
2576
2d13b679
DV		 2577/**
2578 * drm_mode_set_config_internal - helper to call ->set_config
2579 * @set: modeset config to set
2580 *
2581 * This is a little helper to wrap internal calls to the ->set_config driver
2582 * interface. The only thing it adds is correct refcounting dance.
4dfd909f 2583 *
c8e32cc1 2584 * Returns:
1a498633 2585 * Zero on success, negative errno on failure.
2d13b679
DV		 2586 */
2587int drm_mode_set_config_internal(struct drm_mode_set *set)
2588{
2589 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2590 struct drm_framebuffer *fb;
2591 struct drm_crtc *tmp;
b0d12325
DV		 2592 int ret;
2593
5cef29aa
DV		 2594 /*
2595 * NOTE: ->set_config can also disable other crtcs (if we steal all
2596 * connectors from it), hence we need to refcount the fbs across all
2597 * crtcs. Atomic modeset will have saner semantics ...
2598 */
2599 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
3d30a59b 2600 tmp->primary->old_fb = tmp->primary->fb;
5cef29aa 2601
b0d12325 2602 fb = set->fb;
2d13b679 2603
b0d12325
DV		 2604 ret = crtc->funcs->set_config(set);
2605 if (ret == 0) {
e13161af 2606 crtc->primary->crtc = crtc;
0fe27f06 2607 crtc->primary->fb = fb;
5cef29aa 2608 }
cc85e121 2609
5cef29aa 2610 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
f4510a27
MR		 2611 if (tmp->primary->fb)
2612 drm_framebuffer_reference(tmp->primary->fb);
3d30a59b
DV		 2613 if (tmp->primary->old_fb)
2614 drm_framebuffer_unreference(tmp->primary->old_fb);
2615 tmp->primary->old_fb = NULL;
b0d12325
DV		 2616 }
2617
2618 return ret;
2d13b679
DV		 2619}
2620EXPORT_SYMBOL(drm_mode_set_config_internal);
2621
ecb7e16b
GP		 2622/**
2623 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2624 * @mode: mode to query
2625 * @hdisplay: hdisplay value to fill in
2626 * @vdisplay: vdisplay value to fill in
2627 *
2628 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2629 * the appropriate layout.
2630 */
2631void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2632 int *hdisplay, int *vdisplay)
2633{
2634 struct drm_display_mode adjusted;
2635
2636 drm_mode_copy(&adjusted, mode);
2637 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2638 *hdisplay = adjusted.crtc_hdisplay;
2639 *vdisplay = adjusted.crtc_vdisplay;
2640}
2641EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2642
af93629d
MR		 2643/**
2644 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2645 * CRTC viewport
2646 * @crtc: CRTC that framebuffer will be displayed on
2647 * @x: x panning
2648 * @y: y panning
2649 * @mode: mode that framebuffer will be displayed under
2650 * @fb: framebuffer to check size of
c11e9283 2651 */
af93629d
MR		 2652int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2653 int x, int y,
2654 const struct drm_display_mode *mode,
2655 const struct drm_framebuffer *fb)
c11e9283
DL		 2656
2657{
2658 int hdisplay, vdisplay;
2659
ecb7e16b 2660 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
a0c1bbb0 2661
c11e9283
DL		 2662 if (crtc->invert_dimensions)
2663 swap(hdisplay, vdisplay);
2664
2665 if (hdisplay > fb->width ||
2666 vdisplay > fb->height ||
2667 x > fb->width - hdisplay ||
2668 y > fb->height - vdisplay) {
2669 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2670 fb->width, fb->height, hdisplay, vdisplay, x, y,
2671 crtc->invert_dimensions ? " (inverted)" : "");
2672 return -ENOSPC;
2673 }
2674
2675 return 0;
2676}
af93629d 2677EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2678
f453ba04
DA		 2679/**
2680 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2681 * @dev: drm device for the ioctl
2682 * @data: data pointer for the ioctl
2683 * @file_priv: drm file for the ioctl call
f453ba04 2684 *
f453ba04
DA		 2685 * Build a new CRTC configuration based on user request.
2686 *
2687 * Called by the user via ioctl.
2688 *
c8e32cc1 2689 * Returns:
1a498633 2690 * Zero on success, negative errno on failure.
f453ba04
DA		 2691 */
2692int drm_mode_setcrtc(struct drm_device *dev, void *data,
2693 struct drm_file *file_priv)
2694{
2695 struct drm_mode_config *config = &dev->mode_config;
2696 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2697 struct drm_crtc *crtc;
f453ba04
DA		 2698 struct drm_connector **connector_set = NULL, *connector;
2699 struct drm_framebuffer *fb = NULL;
2700 struct drm_display_mode *mode = NULL;
2701 struct drm_mode_set set;
2702 uint32_t __user *set_connectors_ptr;
4a1b0714 2703 int ret;
f453ba04
DA		 2704 int i;
2705
fb3b06c8
DA		 2706 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2707 return -EINVAL;
2708
1d97e915
VS		 2709 /* For some reason crtc x/y offsets are signed internally. */
2710 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2711 return -ERANGE;
2712
84849903 2713 drm_modeset_lock_all(dev);
a2b34e22
RC		 2714 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2715 if (!crtc) {
58367ed6 2716 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2717 ret = -ENOENT;
f453ba04
DA		 2718 goto out;
2719 }
9440106b 2720 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 2721
2722 if (crtc_req->mode_valid) {
2723 /* If we have a mode we need a framebuffer. */
2724 /* If we pass -1, set the mode with the currently bound fb */
2725 if (crtc_req->fb_id == -1) {
f4510a27 2726 if (!crtc->primary->fb) {
6653cc8d
VS		 2727 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2728 ret = -EINVAL;
2729 goto out;
f453ba04 2730 }
f4510a27 2731 fb = crtc->primary->fb;
b0d12325
DV		 2732 /* Make refcounting symmetric with the lookup path. */
2733 drm_framebuffer_reference(fb);
f453ba04 2734 } else {
786b99ed
DV		 2735 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2736 if (!fb) {
58367ed6
ZY		 2737 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2738 crtc_req->fb_id);
37c4e705 2739 ret = -ENOENT;
f453ba04
DA		 2740 goto out;
2741 }
f453ba04
DA		 2742 }
2743
2744 mode = drm_mode_create(dev);
ee34ab5b
VS		 2745 if (!mode) {
2746 ret = -ENOMEM;
2747 goto out;
2748 }
2749
934a8a89 2750 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
90367bf6
VS		 2751 if (ret) {
2752 DRM_DEBUG_KMS("Invalid mode\n");
2753 goto out;
2754 }
2755
f453ba04 2756 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2757
7eb5f302
LP		 2758 /*
2759 * Check whether the primary plane supports the fb pixel format.
2760 * Drivers not implementing the universal planes API use a
2761 * default formats list provided by the DRM core which doesn't
2762 * match real hardware capabilities. Skip the check in that
2763 * case.
2764 */
2765 if (!crtc->primary->format_default) {
2766 ret = drm_plane_check_pixel_format(crtc->primary,
2767 fb->pixel_format);
2768 if (ret) {
2769 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2770 drm_get_format_name(fb->pixel_format));
2771 goto out;
2772 }
2773 }
2774
c11e9283
DL		 2775 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2776 mode, fb);
2777 if (ret)
5f61bb42 2778 goto out;
c11e9283 2779
f453ba04
DA		 2780 }
2781
2782 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2783 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2784 ret = -EINVAL;
2785 goto out;
2786 }
2787
7781de74 2788 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2789 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2790 crtc_req->count_connectors);
2791 ret = -EINVAL;
2792 goto out;
2793 }
2794
2795 if (crtc_req->count_connectors > 0) {
2796 u32 out_id;
2797
2798 /* Avoid unbounded kernel memory allocation */
2799 if (crtc_req->count_connectors > config->num_connector) {
2800 ret = -EINVAL;
2801 goto out;
2802 }
2803
2f6c5389
TR		 2804 connector_set = kmalloc_array(crtc_req->count_connectors,
2805 sizeof(struct drm_connector *),
2806 GFP_KERNEL);
f453ba04
DA		 2807 if (!connector_set) {
2808 ret = -ENOMEM;
2809 goto out;
2810 }
2811
2812 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2813 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2814 if (get_user(out_id, &set_connectors_ptr[i])) {
2815 ret = -EFAULT;
2816 goto out;
2817 }
2818
a2b34e22
RC		 2819 connector = drm_connector_find(dev, out_id);
2820 if (!connector) {
58367ed6
ZY		 2821 DRM_DEBUG_KMS("Connector id %d unknown\n",
2822 out_id);
f27657f2 2823 ret = -ENOENT;
f453ba04
DA		 2824 goto out;
2825 }
9440106b
JG		 2826 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2827 connector->base.id,
25933820 2828 connector->name);
f453ba04
DA		 2829
2830 connector_set[i] = connector;
2831 }
2832 }
2833
2834 set.crtc = crtc;
2835 set.x = crtc_req->x;
2836 set.y = crtc_req->y;
2837 set.mode = mode;
2838 set.connectors = connector_set;
2839 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2840 set.fb = fb;
2d13b679 2841 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2842
2843out:
b0d12325
DV		 2844 if (fb)
2845 drm_framebuffer_unreference(fb);
2846
f453ba04 2847 kfree(connector_set);
ee34ab5b 2848 drm_mode_destroy(dev, mode);
84849903 2849 drm_modeset_unlock_all(dev);
f453ba04
DA		 2850 return ret;
2851}
2852
161d0dc1
MR		 2853/**
2854 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2855 * universal plane handler call
2856 * @crtc: crtc to update cursor for
2857 * @req: data pointer for the ioctl
2858 * @file_priv: drm file for the ioctl call
2859 *
2860 * Legacy cursor ioctl's work directly with driver buffer handles. To
2861 * translate legacy ioctl calls into universal plane handler calls, we need to
2862 * wrap the native buffer handle in a drm_framebuffer.
2863 *
2864 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2865 * buffer with a pitch of 4*width; the universal plane interface should be used
2866 * directly in cases where the hardware can support other buffer settings and
2867 * userspace wants to make use of these capabilities.
2868 *
2869 * Returns:
1a498633 2870 * Zero on success, negative errno on failure.
161d0dc1
MR		 2871 */
2872static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2873 struct drm_mode_cursor2 *req,
2874 struct drm_file *file_priv)
2875{
2876 struct drm_device *dev = crtc->dev;
2877 struct drm_framebuffer *fb = NULL;
2878 struct drm_mode_fb_cmd2 fbreq = {
2879 .width = req->width,
2880 .height = req->height,
2881 .pixel_format = DRM_FORMAT_ARGB8888,
2882 .pitches = { req->width * 4 },
2883 .handles = { req->handle },
2884 };
2885 int32_t crtc_x, crtc_y;
2886 uint32_t crtc_w = 0, crtc_h = 0;
2887 uint32_t src_w = 0, src_h = 0;
2888 int ret = 0;
2889
2890 BUG_ON(!crtc->cursor);
f2b50c11 2891 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
161d0dc1
MR		 2892
2893 /*
2894 * Obtain fb we'll be using (either new or existing) and take an extra
2895 * reference to it if fb != null. setplane will take care of dropping
2896 * the reference if the plane update fails.
2897 */
2898 if (req->flags & DRM_MODE_CURSOR_BO) {
2899 if (req->handle) {
9a6f5130 2900 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
161d0dc1
MR		 2901 if (IS_ERR(fb)) {
2902 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2903 return PTR_ERR(fb);
2904 }
161d0dc1
MR		 2905 } else {
2906 fb = NULL;
2907 }
2908 } else {
161d0dc1
MR		 2909 fb = crtc->cursor->fb;
2910 if (fb)
2911 drm_framebuffer_reference(fb);
161d0dc1
MR		 2912 }
2913
2914 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2915 crtc_x = req->x;
2916 crtc_y = req->y;
2917 } else {
2918 crtc_x = crtc->cursor_x;
2919 crtc_y = crtc->cursor_y;
2920 }
2921
2922 if (fb) {
2923 crtc_w = fb->width;
2924 crtc_h = fb->height;
2925 src_w = fb->width << 16;
2926 src_h = fb->height << 16;
2927 }
2928
2929 /*
2930 * setplane_internal will take care of deref'ing either the old or new
2931 * framebuffer depending on success.
2932 */
f2b50c11 2933 ret = __setplane_internal(crtc->cursor, crtc, fb,
161d0dc1
MR		 2934 crtc_x, crtc_y, crtc_w, crtc_h,
2935 0, 0, src_w, src_h);
2936
2937 /* Update successful; save new cursor position, if necessary */
2938 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2939 crtc->cursor_x = req->x;
2940 crtc->cursor_y = req->y;
2941 }
2942
2943 return ret;
2944}
2945
4c813d4d
DA		 2946static int drm_mode_cursor_common(struct drm_device *dev,
2947 struct drm_mode_cursor2 *req,
2948 struct drm_file *file_priv)
f453ba04 2949{
f453ba04
DA		 2950 struct drm_crtc *crtc;
2951 int ret = 0;
2952
fb3b06c8
DA		 2953 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2954 return -EINVAL;
2955
7c4eaca4 2956 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 2957 return -EINVAL;
f453ba04 2958
a2b34e22
RC		 2959 crtc = drm_crtc_find(dev, req->crtc_id);
2960 if (!crtc) {
58367ed6 2961 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 2962 return -ENOENT;
f453ba04 2963 }
f453ba04 2964
161d0dc1
MR		 2965 /*
2966 * If this crtc has a universal cursor plane, call that plane's update
2967 * handler rather than using legacy cursor handlers.
2968 */
4d02e2de 2969 drm_modeset_lock_crtc(crtc, crtc->cursor);
f2b50c11
DV		 2970 if (crtc->cursor) {
2971 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2972 goto out;
2973 }
2974
f453ba04 2975 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 2976 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 2977 ret = -ENXIO;
2978 goto out;
2979 }
2980 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 2981 if (crtc->funcs->cursor_set2)
2982 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2983 req->width, req->height, req->hot_x, req->hot_y);
2984 else
2985 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2986 req->width, req->height);
f453ba04
DA		 2987 }
2988
2989 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2990 if (crtc->funcs->cursor_move) {
2991 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2992 } else {
f453ba04
DA		 2993 ret = -EFAULT;
2994 goto out;
2995 }
2996 }
2997out:
d059f652 2998 drm_modeset_unlock_crtc(crtc);
dac35663 2999
f453ba04 3000 return ret;
4c813d4d
DA		 3001
3002}
c8e32cc1
DV		 3003
3004
3005/**
3006 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3007 * @dev: drm device for the ioctl
3008 * @data: data pointer for the ioctl
3009 * @file_priv: drm file for the ioctl call
3010 *
3011 * Set the cursor configuration based on user request.
3012 *
3013 * Called by the user via ioctl.
3014 *
3015 * Returns:
1a498633 3016 * Zero on success, negative errno on failure.
c8e32cc1 3017 */
4c813d4d 3018int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 3019 void *data, struct drm_file *file_priv)
4c813d4d
DA		 3020{
3021 struct drm_mode_cursor *req = data;
3022 struct drm_mode_cursor2 new_req;
3023
3024 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3025 new_req.hot_x = new_req.hot_y = 0;
3026
3027 return drm_mode_cursor_common(dev, &new_req, file_priv);
3028}
3029
c8e32cc1
DV		 3030/**
3031 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3032 * @dev: drm device for the ioctl
3033 * @data: data pointer for the ioctl
3034 * @file_priv: drm file for the ioctl call
3035 *
3036 * Set the cursor configuration based on user request. This implements the 2nd
3037 * version of the cursor ioctl, which allows userspace to additionally specify
3038 * the hotspot of the pointer.
3039 *
3040 * Called by the user via ioctl.
3041 *
3042 * Returns:
1a498633 3043 * Zero on success, negative errno on failure.
c8e32cc1 3044 */
4c813d4d
DA		 3045int drm_mode_cursor2_ioctl(struct drm_device *dev,
3046 void *data, struct drm_file *file_priv)
3047{
3048 struct drm_mode_cursor2 *req = data;
4dfd909f 3049
4c813d4d 3050 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 3051}
3052
c8e32cc1
DV		 3053/**
3054 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3055 * @bpp: bits per pixels
3056 * @depth: bit depth per pixel
3057 *
3058 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3059 * Useful in fbdev emulation code, since that deals in those values.
3060 */
308e5bcb
JB		 3061uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3062{
3063 uint32_t fmt;
3064
3065 switch (bpp) {
3066 case 8:
d84f031b 3067 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 3068 break;
3069 case 16:
3070 if (depth == 15)
04b3924d 3071 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 3072 else
04b3924d 3073 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 3074 break;
3075 case 24:
04b3924d 3076 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 3077 break;
3078 case 32:
3079 if (depth == 24)
04b3924d 3080 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 3081 else if (depth == 30)
04b3924d 3082 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 3083 else
04b3924d 3084 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 3085 break;
3086 default:
04b3924d
VS		 3087 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3088 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 3089 break;
3090 }
3091
3092 return fmt;
3093}
3094EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3095
f453ba04
DA		 3096/**
3097 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 3098 * @dev: drm device for the ioctl
3099 * @data: data pointer for the ioctl
3100 * @file_priv: drm file for the ioctl call
f453ba04 3101 *
c8e32cc1 3102 * Add a new FB to the specified CRTC, given a user request. This is the
209f5527 3103 * original addfb ioctl which only supported RGB formats.
f453ba04
DA		 3104 *
3105 * Called by the user via ioctl.
3106 *
c8e32cc1 3107 * Returns:
1a498633 3108 * Zero on success, negative errno on failure.
f453ba04
DA		 3109 */
3110int drm_mode_addfb(struct drm_device *dev,
3111 void *data, struct drm_file *file_priv)
3112{
308e5bcb
JB		 3113 struct drm_mode_fb_cmd *or = data;
3114 struct drm_mode_fb_cmd2 r = {};
228f2cb3 3115 int ret;
308e5bcb 3116
228f2cb3 3117 /* convert to new format and call new ioctl */
308e5bcb
JB		 3118 r.fb_id = or->fb_id;
3119 r.width = or->width;
3120 r.height = or->height;
3121 r.pitches[0] = or->pitch;
3122 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3123 r.handles[0] = or->handle;
3124
228f2cb3
CE		 3125 ret = drm_mode_addfb2(dev, &r, file_priv);
3126 if (ret)
3127 return ret;
308e5bcb 3128
228f2cb3 3129 or->fb_id = r.fb_id;
4b096ac1 3130
baf698b0 3131 return 0;
308e5bcb
JB		 3132}
3133
cff91b62 3134static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 3135{
3136 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3137
3138 switch (format) {
3139 case DRM_FORMAT_C8:
3140 case DRM_FORMAT_RGB332:
3141 case DRM_FORMAT_BGR233:
3142 case DRM_FORMAT_XRGB4444:
3143 case DRM_FORMAT_XBGR4444:
3144 case DRM_FORMAT_RGBX4444:
3145 case DRM_FORMAT_BGRX4444:
3146 case DRM_FORMAT_ARGB4444:
3147 case DRM_FORMAT_ABGR4444:
3148 case DRM_FORMAT_RGBA4444:
3149 case DRM_FORMAT_BGRA4444:
3150 case DRM_FORMAT_XRGB1555:
3151 case DRM_FORMAT_XBGR1555:
3152 case DRM_FORMAT_RGBX5551:
3153 case DRM_FORMAT_BGRX5551:
3154 case DRM_FORMAT_ARGB1555:
3155 case DRM_FORMAT_ABGR1555:
3156 case DRM_FORMAT_RGBA5551:
3157 case DRM_FORMAT_BGRA5551:
3158 case DRM_FORMAT_RGB565:
3159 case DRM_FORMAT_BGR565:
3160 case DRM_FORMAT_RGB888:
3161 case DRM_FORMAT_BGR888:
3162 case DRM_FORMAT_XRGB8888:
3163 case DRM_FORMAT_XBGR8888:
3164 case DRM_FORMAT_RGBX8888:
3165 case DRM_FORMAT_BGRX8888:
3166 case DRM_FORMAT_ARGB8888:
3167 case DRM_FORMAT_ABGR8888:
3168 case DRM_FORMAT_RGBA8888:
3169 case DRM_FORMAT_BGRA8888:
3170 case DRM_FORMAT_XRGB2101010:
3171 case DRM_FORMAT_XBGR2101010:
3172 case DRM_FORMAT_RGBX1010102:
3173 case DRM_FORMAT_BGRX1010102:
3174 case DRM_FORMAT_ARGB2101010:
3175 case DRM_FORMAT_ABGR2101010:
3176 case DRM_FORMAT_RGBA1010102:
3177 case DRM_FORMAT_BGRA1010102:
3178 case DRM_FORMAT_YUYV:
3179 case DRM_FORMAT_YVYU:
3180 case DRM_FORMAT_UYVY:
3181 case DRM_FORMAT_VYUY:
3182 case DRM_FORMAT_AYUV:
3183 case DRM_FORMAT_NV12:
3184 case DRM_FORMAT_NV21:
3185 case DRM_FORMAT_NV16:
3186 case DRM_FORMAT_NV61:
ba623f6a
LP		 3187 case DRM_FORMAT_NV24:
3188 case DRM_FORMAT_NV42:
935b5977
VS		 3189 case DRM_FORMAT_YUV410:
3190 case DRM_FORMAT_YVU410:
3191 case DRM_FORMAT_YUV411:
3192 case DRM_FORMAT_YVU411:
3193 case DRM_FORMAT_YUV420:
3194 case DRM_FORMAT_YVU420:
3195 case DRM_FORMAT_YUV422:
3196 case DRM_FORMAT_YVU422:
3197 case DRM_FORMAT_YUV444:
3198 case DRM_FORMAT_YVU444:
3199 return 0;
3200 default:
23c453a4
VS		 3201 DRM_DEBUG_KMS("invalid pixel format %s\n",
3202 drm_get_format_name(r->pixel_format));
935b5977
VS		 3203 return -EINVAL;
3204 }
3205}
3206
cff91b62 3207static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 3208{
3209 int ret, hsub, vsub, num_planes, i;
3210
3211 ret = format_check(r);
3212 if (ret) {
6ba6d03e
VS		 3213 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3214 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 3215 return ret;
3216 }
3217
3218 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3219 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3220 num_planes = drm_format_num_planes(r->pixel_format);
3221
3222 if (r->width == 0 || r->width % hsub) {
209f5527 3223 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
d1b45d5f
VS		 3224 return -EINVAL;
3225 }
3226
3227 if (r->height == 0 || r->height % vsub) {
1aa1b11c 3228 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 3229 return -EINVAL;
3230 }
3231
3232 for (i = 0; i < num_planes; i++) {
3233 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 3234 unsigned int height = r->height / (i != 0 ? vsub : 1);
3235 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 3236
3237 if (!r->handles[i]) {
1aa1b11c 3238 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 3239 return -EINVAL;
3240 }
3241
b180b5d1
VS		 3242 if ((uint64_t) width * cpp > UINT_MAX)
3243 return -ERANGE;
3244
3245 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3246 return -ERANGE;
3247
3248 if (r->pitches[i] < width * cpp) {
1aa1b11c 3249 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 3250 return -EINVAL;
3251 }
e3eb3250
RC		 3252
3253 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3254 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3255 r->modifier[i], i);
3256 return -EINVAL;
3257 }
d1b45d5f
VS		 3258 }
3259
bbe16a40
DV		 3260 for (i = num_planes; i < 4; i++) {
3261 if (r->modifier[i]) {
3262 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3263 return -EINVAL;
3264 }
3265
3266 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3267 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3268 continue;
3269
3270 if (r->handles[i]) {
3271 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3272 return -EINVAL;
3273 }
3274
3275 if (r->pitches[i]) {
3276 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3277 return -EINVAL;
3278 }
3279
3280 if (r->offsets[i]) {
3281 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3282 return -EINVAL;
3283 }
3284 }
3285
d1b45d5f
VS		 3286 return 0;
3287}
3288
9a6f5130
CW		 3289static struct drm_framebuffer *
3290internal_framebuffer_create(struct drm_device *dev,
3291 struct drm_mode_fb_cmd2 *r,
3292 struct drm_file *file_priv)
308e5bcb 3293{
f453ba04
DA		 3294 struct drm_mode_config *config = &dev->mode_config;
3295 struct drm_framebuffer *fb;
4a1b0714 3296 int ret;
f453ba04 3297
e3eb3250 3298 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
e3cc3520 3299 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
c394c2b0 3300 return ERR_PTR(-EINVAL);
e3cc3520
VS		 3301 }
3302
f453ba04 3303 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 3304 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 3305 r->width, config->min_width, config->max_width);
c394c2b0 3306 return ERR_PTR(-EINVAL);
f453ba04
DA		 3307 }
3308 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 3309 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 3310 r->height, config->min_height, config->max_height);
c394c2b0 3311 return ERR_PTR(-EINVAL);
f453ba04
DA		 3312 }
3313
e3eb3250
RC		 3314 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3315 !dev->mode_config.allow_fb_modifiers) {
3316 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3317 return ERR_PTR(-EINVAL);
3318 }
3319
d1b45d5f
VS		 3320 ret = framebuffer_check(r);
3321 if (ret)
c394c2b0 3322 return ERR_PTR(ret);
935b5977 3323
f453ba04 3324 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 3325 if (IS_ERR(fb)) {
1aa1b11c 3326 DRM_DEBUG_KMS("could not create framebuffer\n");
c394c2b0 3327 return fb;
f453ba04
DA		 3328 }
3329
c394c2b0
MR		 3330 return fb;
3331}
4b096ac1 3332
c394c2b0
MR		 3333/**
3334 * drm_mode_addfb2 - add an FB to the graphics configuration
3335 * @dev: drm device for the ioctl
3336 * @data: data pointer for the ioctl
3337 * @file_priv: drm file for the ioctl call
3338 *
3339 * Add a new FB to the specified CRTC, given a user request with format. This is
3340 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3341 * and uses fourcc codes as pixel format specifiers.
3342 *
3343 * Called by the user via ioctl.
3344 *
3345 * Returns:
1a498633 3346 * Zero on success, negative errno on failure.
c394c2b0
MR		 3347 */
3348int drm_mode_addfb2(struct drm_device *dev,
3349 void *data, struct drm_file *file_priv)
3350{
9a6f5130 3351 struct drm_mode_fb_cmd2 *r = data;
c394c2b0
MR		 3352 struct drm_framebuffer *fb;
3353
3354 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3355 return -EINVAL;
3356
9a6f5130 3357 fb = internal_framebuffer_create(dev, r, file_priv);
c394c2b0
MR		 3358 if (IS_ERR(fb))
3359 return PTR_ERR(fb);
3360
9a6f5130
CW		 3361 /* Transfer ownership to the filp for reaping on close */
3362
3363 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3364 mutex_lock(&file_priv->fbs_lock);
3365 r->fb_id = fb->base.id;
3366 list_add(&fb->filp_head, &file_priv->fbs);
3367 mutex_unlock(&file_priv->fbs_lock);
3368
c394c2b0 3369 return 0;
f453ba04
DA		 3370}
3371
3372/**
3373 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 3374 * @dev: drm device for the ioctl
3375 * @data: data pointer for the ioctl
3376 * @file_priv: drm file for the ioctl call
f453ba04 3377 *
f453ba04
DA		 3378 * Remove the FB specified by the user.
3379 *
3380 * Called by the user via ioctl.
3381 *
c8e32cc1 3382 * Returns:
1a498633 3383 * Zero on success, negative errno on failure.
f453ba04
DA		 3384 */
3385int drm_mode_rmfb(struct drm_device *dev,
3386 void *data, struct drm_file *file_priv)
3387{
f453ba04
DA		 3388 struct drm_framebuffer *fb = NULL;
3389 struct drm_framebuffer *fbl = NULL;
3390 uint32_t *id = data;
f453ba04
DA		 3391 int found = 0;
3392
fb3b06c8
DA		 3393 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3394 return -EINVAL;
3395
4b096ac1 3396 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 3397 mutex_lock(&dev->mode_config.fb_lock);
3398 fb = __drm_framebuffer_lookup(dev, *id);
3399 if (!fb)
3400 goto fail_lookup;
3401
f453ba04
DA		 3402 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3403 if (fb == fbl)
3404 found = 1;
2b677e8c
DV		 3405 if (!found)
3406 goto fail_lookup;
3407
3408 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3409 __drm_framebuffer_unregister(dev, fb);
f453ba04 3410
4b096ac1 3411 list_del_init(&fb->filp_head);
2b677e8c 3412 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 3413 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3414
4b096ac1 3415 drm_framebuffer_remove(fb);
4b096ac1 3416
2b677e8c
DV		 3417 return 0;
3418
3419fail_lookup:
3420 mutex_unlock(&dev->mode_config.fb_lock);
3421 mutex_unlock(&file_priv->fbs_lock);
3422
37c4e705 3423 return -ENOENT;
f453ba04
DA		 3424}
3425
3426/**
3427 * drm_mode_getfb - get FB info
065a50ed
DV		 3428 * @dev: drm device for the ioctl
3429 * @data: data pointer for the ioctl
3430 * @file_priv: drm file for the ioctl call
f453ba04 3431 *
f453ba04
DA		 3432 * Lookup the FB given its ID and return info about it.
3433 *
3434 * Called by the user via ioctl.
3435 *
c8e32cc1 3436 * Returns:
1a498633 3437 * Zero on success, negative errno on failure.
f453ba04
DA		 3438 */
3439int drm_mode_getfb(struct drm_device *dev,
3440 void *data, struct drm_file *file_priv)
3441{
3442 struct drm_mode_fb_cmd *r = data;
f453ba04 3443 struct drm_framebuffer *fb;
58c0dca1 3444 int ret;
f453ba04 3445
fb3b06c8
DA		 3446 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3447 return -EINVAL;
3448
786b99ed 3449 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 3450 if (!fb)
37c4e705 3451 return -ENOENT;
f453ba04
DA		 3452
3453 r->height = fb->height;
3454 r->width = fb->width;
3455 r->depth = fb->depth;
3456 r->bpp = fb->bits_per_pixel;
01f2c773 3457 r->pitch = fb->pitches[0];
101b96f3 3458 if (fb->funcs->create_handle) {
09f308f7 3459 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 3460 drm_is_control_client(file_priv)) {
101b96f3
DH		 3461 ret = fb->funcs->create_handle(fb, file_priv,
3462 &r->handle);
3463 } else {
3464 /* GET_FB() is an unprivileged ioctl so we must not
3465 * return a buffer-handle to non-master processes! For
3466 * backwards-compatibility reasons, we cannot make
3467 * GET_FB() privileged, so just return an invalid handle
3468 * for non-masters. */
3469 r->handle = 0;
3470 ret = 0;
3471 }
3472 } else {
af26ef3b 3473 ret = -ENODEV;
101b96f3 3474 }
f453ba04 3475
58c0dca1
DV		 3476 drm_framebuffer_unreference(fb);
3477
f453ba04
DA		 3478 return ret;
3479}
3480
c8e32cc1
DV		 3481/**
3482 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3483 * @dev: drm device for the ioctl
3484 * @data: data pointer for the ioctl
3485 * @file_priv: drm file for the ioctl call
3486 *
3487 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3488 * rectangle list. Generic userspace which does frontbuffer rendering must call
3489 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3490 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3491 *
3492 * Modesetting drivers which always update the frontbuffer do not need to
3493 * implement the corresponding ->dirty framebuffer callback.
3494 *
3495 * Called by the user via ioctl.
3496 *
3497 * Returns:
1a498633 3498 * Zero on success, negative errno on failure.
c8e32cc1 3499 */
884840aa
JB		 3500int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3501 void *data, struct drm_file *file_priv)
3502{
3503 struct drm_clip_rect __user *clips_ptr;
3504 struct drm_clip_rect *clips = NULL;
3505 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 3506 struct drm_framebuffer *fb;
3507 unsigned flags;
3508 int num_clips;
4a1b0714 3509 int ret;
884840aa 3510
fb3b06c8
DA		 3511 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3512 return -EINVAL;
3513
786b99ed 3514 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 3515 if (!fb)
37c4e705 3516 return -ENOENT;
884840aa
JB		 3517
3518 num_clips = r->num_clips;
81f6c7f8 3519 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 3520
3521 if (!num_clips != !clips_ptr) {
3522 ret = -EINVAL;
3523 goto out_err1;
3524 }
3525
3526 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3527
3528 /* If userspace annotates copy, clips must come in pairs */
3529 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3530 ret = -EINVAL;
3531 goto out_err1;
3532 }
3533
3534 if (num_clips && clips_ptr) {
a5cd3351
XW		 3535 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3536 ret = -EINVAL;
3537 goto out_err1;
3538 }
bd3f0ff9 3539 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
884840aa
JB		 3540 if (!clips) {
3541 ret = -ENOMEM;
3542 goto out_err1;
3543 }
3544
3545 ret = copy_from_user(clips, clips_ptr,
3546 num_clips * sizeof(*clips));
e902a358
DC		 3547 if (ret) {
3548 ret = -EFAULT;
884840aa 3549 goto out_err2;
e902a358 3550 }
884840aa
JB		 3551 }
3552
3553 if (fb->funcs->dirty) {
02b00162
TH		 3554 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3555 clips, num_clips);
884840aa
JB		 3556 } else {
3557 ret = -ENOSYS;
884840aa
JB		 3558 }
3559
3560out_err2:
3561 kfree(clips);
3562out_err1:
4ccf097f
DV		 3563 drm_framebuffer_unreference(fb);
3564
884840aa
JB		 3565 return ret;
3566}
3567
3568
f453ba04
DA		 3569/**
3570 * drm_fb_release - remove and free the FBs on this file
065a50ed 3571 * @priv: drm file for the ioctl
f453ba04 3572 *
f453ba04
DA		 3573 * Destroy all the FBs associated with @filp.
3574 *
3575 * Called by the user via ioctl.
3576 *
c8e32cc1 3577 * Returns:
1a498633 3578 * Zero on success, negative errno on failure.
f453ba04 3579 */
ea39f835 3580void drm_fb_release(struct drm_file *priv)
f453ba04 3581{
f453ba04
DA		 3582 struct drm_device *dev = priv->minor->dev;
3583 struct drm_framebuffer *fb, *tfb;
3584
1b116297
DV		 3585 /*
3586 * When the file gets released that means no one else can access the fb
e2db726b 3587 * list any more, so no need to grab fpriv->fbs_lock. And we need to
1b116297
DV		 3588 * avoid upsetting lockdep since the universal cursor code adds a
3589 * framebuffer while holding mutex locks.
3590 *
3591 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3592 * locks is impossible here since no one else but this function can get
3593 * at it any more.
3594 */
f453ba04 3595 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2b677e8c
DV		 3596
3597 mutex_lock(&dev->mode_config.fb_lock);
3598 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3599 __drm_framebuffer_unregister(dev, fb);
3600 mutex_unlock(&dev->mode_config.fb_lock);
3601
4b096ac1 3602 list_del_init(&fb->filp_head);
2b677e8c
DV		 3603
3604 /* This will also drop the fpriv->fbs reference. */
f7eff60e 3605 drm_framebuffer_remove(fb);
f453ba04 3606 }
f453ba04
DA		 3607}
3608
c8e32cc1
DV		 3609/**
3610 * drm_property_create - create a new property type
3611 * @dev: drm device
3612 * @flags: flags specifying the property type
3613 * @name: name of the property
3614 * @num_values: number of pre-defined values
3615 *
3616 * This creates a new generic drm property which can then be attached to a drm
3617 * object with drm_object_attach_property. The returned property object must be
3618 * freed with drm_property_destroy.
3619 *
3b5b9932
DL		 3620 * Note that the DRM core keeps a per-device list of properties and that, if
3621 * drm_mode_config_cleanup() is called, it will destroy all properties created
3622 * by the driver.
3623 *
c8e32cc1
DV		 3624 * Returns:
3625 * A pointer to the newly created property on success, NULL on failure.
3626 */
f453ba04
DA		 3627struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3628 const char *name, int num_values)
3629{
3630 struct drm_property *property = NULL;
6bfc56aa 3631 int ret;
f453ba04
DA		 3632
3633 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3634 if (!property)
3635 return NULL;
3636
98f75de4
RC		 3637 property->dev = dev;
3638
f453ba04 3639 if (num_values) {
bd3f0ff9
TR		 3640 property->values = kcalloc(num_values, sizeof(uint64_t),
3641 GFP_KERNEL);
f453ba04
DA		 3642 if (!property->values)
3643 goto fail;
3644 }
3645
6bfc56aa
VS		 3646 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3647 if (ret)
3648 goto fail;
3649
f453ba04
DA		 3650 property->flags = flags;
3651 property->num_values = num_values;
3758b341 3652 INIT_LIST_HEAD(&property->enum_list);
f453ba04 3653
471dd2ef 3654 if (name) {
f453ba04 3655 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3656 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3657 }
f453ba04
DA		 3658
3659 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3660
3661 WARN_ON(!drm_property_type_valid(property));
3662
f453ba04
DA		 3663 return property;
3664fail:
6bfc56aa 3665 kfree(property->values);
f453ba04
DA		 3666 kfree(property);
3667 return NULL;
3668}
3669EXPORT_SYMBOL(drm_property_create);
3670
c8e32cc1 3671/**
2aa9d2bc 3672 * drm_property_create_enum - create a new enumeration property type
c8e32cc1
DV		 3673 * @dev: drm device
3674 * @flags: flags specifying the property type
3675 * @name: name of the property
3676 * @props: enumeration lists with property values
3677 * @num_values: number of pre-defined values
3678 *
3679 * This creates a new generic drm property which can then be attached to a drm
3680 * object with drm_object_attach_property. The returned property object must be
3681 * freed with drm_property_destroy.
3682 *
3683 * Userspace is only allowed to set one of the predefined values for enumeration
3684 * properties.
3685 *
3686 * Returns:
3687 * A pointer to the newly created property on success, NULL on failure.
3688 */
4a67d391
SH		 3689struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3690 const char *name,
3691 const struct drm_prop_enum_list *props,
3692 int num_values)
3693{
3694 struct drm_property *property;
3695 int i, ret;
3696
3697 flags |= DRM_MODE_PROP_ENUM;
3698
3699 property = drm_property_create(dev, flags, name, num_values);
3700 if (!property)
3701 return NULL;
3702
3703 for (i = 0; i < num_values; i++) {
3704 ret = drm_property_add_enum(property, i,
3705 props[i].type,
3706 props[i].name);
3707 if (ret) {
3708 drm_property_destroy(dev, property);
3709 return NULL;
3710 }
3711 }
3712
3713 return property;
3714}
3715EXPORT_SYMBOL(drm_property_create_enum);
3716
c8e32cc1 3717/**
2aa9d2bc 3718 * drm_property_create_bitmask - create a new bitmask property type
c8e32cc1
DV		 3719 * @dev: drm device
3720 * @flags: flags specifying the property type
3721 * @name: name of the property
3722 * @props: enumeration lists with property bitflags
295ee853
DV		 3723 * @num_props: size of the @props array
3724 * @supported_bits: bitmask of all supported enumeration values
c8e32cc1 3725 *
295ee853 3726 * This creates a new bitmask drm property which can then be attached to a drm
c8e32cc1
DV		 3727 * object with drm_object_attach_property. The returned property object must be
3728 * freed with drm_property_destroy.
3729 *
3730 * Compared to plain enumeration properties userspace is allowed to set any
3731 * or'ed together combination of the predefined property bitflag values
3732 *
3733 * Returns:
3734 * A pointer to the newly created property on success, NULL on failure.
3735 */
49e27545
RC		 3736struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3737 int flags, const char *name,
3738 const struct drm_prop_enum_list *props,
7689ffb3
VS		 3739 int num_props,
3740 uint64_t supported_bits)
49e27545
RC		 3741{
3742 struct drm_property *property;
7689ffb3
VS		 3743 int i, ret, index = 0;
3744 int num_values = hweight64(supported_bits);
49e27545
RC		 3745
3746 flags |= DRM_MODE_PROP_BITMASK;
3747
3748 property = drm_property_create(dev, flags, name, num_values);
3749 if (!property)
3750 return NULL;
7689ffb3
VS		 3751 for (i = 0; i < num_props; i++) {
3752 if (!(supported_bits & (1ULL << props[i].type)))
3753 continue;
49e27545 3754
7689ffb3
VS		 3755 if (WARN_ON(index >= num_values)) {
3756 drm_property_destroy(dev, property);
3757 return NULL;
3758 }
3759
3760 ret = drm_property_add_enum(property, index++,
49e27545
RC		 3761 props[i].type,
3762 props[i].name);
3763 if (ret) {
3764 drm_property_destroy(dev, property);
3765 return NULL;
3766 }
3767 }
3768
3769 return property;
3770}
3771EXPORT_SYMBOL(drm_property_create_bitmask);
3772
ebc44cf3
RC		 3773static struct drm_property *property_create_range(struct drm_device *dev,
3774 int flags, const char *name,
3775 uint64_t min, uint64_t max)
3776{
3777 struct drm_property *property;
3778
3779 property = drm_property_create(dev, flags, name, 2);
3780 if (!property)
3781 return NULL;
3782
3783 property->values[0] = min;
3784 property->values[1] = max;
3785
3786 return property;
3787}
3788
c8e32cc1 3789/**
960cd9d4 3790 * drm_property_create_range - create a new unsigned ranged property type
c8e32cc1
DV		 3791 * @dev: drm device
3792 * @flags: flags specifying the property type
3793 * @name: name of the property
3794 * @min: minimum value of the property
3795 * @max: maximum value of the property
3796 *
3797 * This creates a new generic drm property which can then be attached to a drm
3798 * object with drm_object_attach_property. The returned property object must be
3799 * freed with drm_property_destroy.
3800 *
960cd9d4
DV		 3801 * Userspace is allowed to set any unsigned integer value in the (min, max)
3802 * range inclusive.
c8e32cc1
DV		 3803 *
3804 * Returns:
3805 * A pointer to the newly created property on success, NULL on failure.
3806 */
d9bc3c02
SH		 3807struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3808 const char *name,
3809 uint64_t min, uint64_t max)
3810{
ebc44cf3
RC		 3811 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3812 name, min, max);
d9bc3c02
SH		 3813}
3814EXPORT_SYMBOL(drm_property_create_range);
3815
960cd9d4
DV		 3816/**
3817 * drm_property_create_signed_range - create a new signed ranged property type
3818 * @dev: drm device
3819 * @flags: flags specifying the property type
3820 * @name: name of the property
3821 * @min: minimum value of the property
3822 * @max: maximum value of the property
3823 *
3824 * This creates a new generic drm property which can then be attached to a drm
3825 * object with drm_object_attach_property. The returned property object must be
3826 * freed with drm_property_destroy.
3827 *
3828 * Userspace is allowed to set any signed integer value in the (min, max)
3829 * range inclusive.
3830 *
3831 * Returns:
3832 * A pointer to the newly created property on success, NULL on failure.
3833 */
ebc44cf3
RC		 3834struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3835 int flags, const char *name,
3836 int64_t min, int64_t max)
3837{
3838 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3839 name, I642U64(min), I642U64(max));
3840}
3841EXPORT_SYMBOL(drm_property_create_signed_range);
3842
960cd9d4
DV		 3843/**
3844 * drm_property_create_object - create a new object property type
3845 * @dev: drm device
3846 * @flags: flags specifying the property type
3847 * @name: name of the property
3848 * @type: object type from DRM_MODE_OBJECT_* defines
3849 *
3850 * This creates a new generic drm property which can then be attached to a drm
3851 * object with drm_object_attach_property. The returned property object must be
3852 * freed with drm_property_destroy.
3853 *
3854 * Userspace is only allowed to set this to any property value of the given
3855 * @type. Only useful for atomic properties, which is enforced.
3856 *
3857 * Returns:
3858 * A pointer to the newly created property on success, NULL on failure.
3859 */
98f75de4
RC		 3860struct drm_property *drm_property_create_object(struct drm_device *dev,
3861 int flags, const char *name, uint32_t type)
3862{
3863 struct drm_property *property;
3864
3865 flags |= DRM_MODE_PROP_OBJECT;
3866
960cd9d4
DV		 3867 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3868 return NULL;
3869
98f75de4
RC		 3870 property = drm_property_create(dev, flags, name, 1);
3871 if (!property)
3872 return NULL;
3873
3874 property->values[0] = type;
3875
3876 return property;
3877}
3878EXPORT_SYMBOL(drm_property_create_object);
3879
960cd9d4
DV		 3880/**
3881 * drm_property_create_bool - create a new boolean property type
3882 * @dev: drm device
3883 * @flags: flags specifying the property type
3884 * @name: name of the property
3885 *
3886 * This creates a new generic drm property which can then be attached to a drm
3887 * object with drm_object_attach_property. The returned property object must be
3888 * freed with drm_property_destroy.
3889 *
3890 * This is implemented as a ranged property with only {0, 1} as valid values.
3891 *
3892 * Returns:
3893 * A pointer to the newly created property on success, NULL on failure.
3894 */
3895struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3896 const char *name)
3897{
3898 return drm_property_create_range(dev, flags, name, 0, 1);
3899}
3900EXPORT_SYMBOL(drm_property_create_bool);
3901
c8e32cc1
DV		 3902/**
3903 * drm_property_add_enum - add a possible value to an enumeration property
3904 * @property: enumeration property to change
3905 * @index: index of the new enumeration
3906 * @value: value of the new enumeration
3907 * @name: symbolic name of the new enumeration
3908 *
3909 * This functions adds enumerations to a property.
3910 *
3911 * It's use is deprecated, drivers should use one of the more specific helpers
3912 * to directly create the property with all enumerations already attached.
3913 *
3914 * Returns:
3915 * Zero on success, error code on failure.
3916 */
f453ba04
DA		 3917int drm_property_add_enum(struct drm_property *property, int index,
3918 uint64_t value, const char *name)
3919{
3920 struct drm_property_enum *prop_enum;
3921
5ea22f24
RC		 3922 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3923 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 3924 return -EINVAL;
3925
3926 /*
3927 * Bitmask enum properties have the additional constraint of values
3928 * from 0 to 63
3929 */
5ea22f24
RC		 3930 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3931 (value > 63))
f453ba04
DA		 3932 return -EINVAL;
3933
3758b341
DV		 3934 if (!list_empty(&property->enum_list)) {
3935 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 3936 if (prop_enum->value == value) {
3937 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3938 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3939 return 0;
3940 }
3941 }
3942 }
3943
3944 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3945 if (!prop_enum)
3946 return -ENOMEM;
3947
3948 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3949 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3950 prop_enum->value = value;
3951
3952 property->values[index] = value;
3758b341 3953 list_add_tail(&prop_enum->head, &property->enum_list);
f453ba04
DA		 3954 return 0;
3955}
3956EXPORT_SYMBOL(drm_property_add_enum);
3957
c8e32cc1
DV		 3958/**
3959 * drm_property_destroy - destroy a drm property
3960 * @dev: drm device
3961 * @property: property to destry
3962 *
3963 * This function frees a property including any attached resources like
3964 * enumeration values.
3965 */
f453ba04
DA		 3966void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3967{
3968 struct drm_property_enum *prop_enum, *pt;
3969
3758b341 3970 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
f453ba04
DA		 3971 list_del(&prop_enum->head);
3972 kfree(prop_enum);
3973 }
3974
3975 if (property->num_values)
3976 kfree(property->values);
3977 drm_mode_object_put(dev, &property->base);
3978 list_del(&property->head);
3979 kfree(property);
3980}
3981EXPORT_SYMBOL(drm_property_destroy);
3982
c8e32cc1
DV		 3983/**
3984 * drm_object_attach_property - attach a property to a modeset object
3985 * @obj: drm modeset object
3986 * @property: property to attach
3987 * @init_val: initial value of the property
3988 *
3989 * This attaches the given property to the modeset object with the given initial
3990 * value. Currently this function cannot fail since the properties are stored in
3991 * a statically sized array.
3992 */
c543188a
PZ		 3993void drm_object_attach_property(struct drm_mode_object *obj,
3994 struct drm_property *property,
3995 uint64_t init_val)
3996{
7f88a9be 3997 int count = obj->properties->count;
c543188a 3998
7f88a9be
PZ		 3999 if (count == DRM_OBJECT_MAX_PROPERTY) {
4000 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4001 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4002 "you see this message on the same object type.\n",
4003 obj->type);
4004 return;
c543188a
PZ		 4005 }
4006
b17cd757 4007 obj->properties->properties[count] = property;
7f88a9be
PZ		 4008 obj->properties->values[count] = init_val;
4009 obj->properties->count++;
88a48e29
RC		 4010 if (property->flags & DRM_MODE_PROP_ATOMIC)
4011 obj->properties->atomic_count++;
c543188a
PZ		 4012}
4013EXPORT_SYMBOL(drm_object_attach_property);
4014
c8e32cc1
DV		 4015/**
4016 * drm_object_property_set_value - set the value of a property
4017 * @obj: drm mode object to set property value for
4018 * @property: property to set
4019 * @val: value the property should be set to
4020 *
4021 * This functions sets a given property on a given object. This function only
4022 * changes the software state of the property, it does not call into the
4023 * driver's ->set_property callback.
4024 *
4025 * Returns:
4026 * Zero on success, error code on failure.
4027 */
c543188a
PZ		 4028int drm_object_property_set_value(struct drm_mode_object *obj,
4029 struct drm_property *property, uint64_t val)
4030{
4031 int i;
4032
7f88a9be 4033 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4034 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4035 obj->properties->values[i] = val;
4036 return 0;
4037 }
4038 }
4039
4040 return -EINVAL;
4041}
4042EXPORT_SYMBOL(drm_object_property_set_value);
4043
c8e32cc1
DV		 4044/**
4045 * drm_object_property_get_value - retrieve the value of a property
4046 * @obj: drm mode object to get property value from
4047 * @property: property to retrieve
4048 * @val: storage for the property value
4049 *
4050 * This function retrieves the softare state of the given property for the given
4051 * property. Since there is no driver callback to retrieve the current property
4052 * value this might be out of sync with the hardware, depending upon the driver
4053 * and property.
4054 *
4055 * Returns:
4056 * Zero on success, error code on failure.
4057 */
c543188a
PZ		 4058int drm_object_property_get_value(struct drm_mode_object *obj,
4059 struct drm_property *property, uint64_t *val)
4060{
4061 int i;
4062
88a48e29
RC		 4063 /* read-only properties bypass atomic mechanism and still store
4064 * their value in obj->properties->values[].. mostly to avoid
4065 * having to deal w/ EDID and similar props in atomic paths:
4066 */
4067 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4068 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4069 return drm_atomic_get_property(obj, property, val);
4070
7f88a9be 4071 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4072 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4073 *val = obj->properties->values[i];
4074 return 0;
4075 }
4076 }
4077
4078 return -EINVAL;
4079}
4080EXPORT_SYMBOL(drm_object_property_get_value);
4081
c8e32cc1 4082/**
1a498633 4083 * drm_mode_getproperty_ioctl - get the property metadata
c8e32cc1
DV		 4084 * @dev: DRM device
4085 * @data: ioctl data
4086 * @file_priv: DRM file info
4087 *
1a498633
DV		 4088 * This function retrieves the metadata for a given property, like the different
4089 * possible values for an enum property or the limits for a range property.
4090 *
4091 * Blob properties are special
c8e32cc1
DV		 4092 *
4093 * Called by the user via ioctl.
4094 *
4095 * Returns:
1a498633 4096 * Zero on success, negative errno on failure.
c8e32cc1 4097 */
f453ba04
DA		 4098int drm_mode_getproperty_ioctl(struct drm_device *dev,
4099 void *data, struct drm_file *file_priv)
4100{
f453ba04
DA		 4101 struct drm_mode_get_property *out_resp = data;
4102 struct drm_property *property;
4103 int enum_count = 0;
f453ba04
DA		 4104 int value_count = 0;
4105 int ret = 0, i;
4106 int copied;
4107 struct drm_property_enum *prop_enum;
4108 struct drm_mode_property_enum __user *enum_ptr;
f453ba04 4109 uint64_t __user *values_ptr;
f453ba04 4110
fb3b06c8
DA		 4111 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4112 return -EINVAL;
4113
84849903 4114 drm_modeset_lock_all(dev);
a2b34e22
RC		 4115 property = drm_property_find(dev, out_resp->prop_id);
4116 if (!property) {
f27657f2 4117 ret = -ENOENT;
f453ba04
DA		 4118 goto done;
4119 }
f453ba04 4120
5ea22f24
RC		 4121 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4122 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3758b341 4123 list_for_each_entry(prop_enum, &property->enum_list, head)
f453ba04 4124 enum_count++;
f453ba04
DA		 4125 }
4126
4127 value_count = property->num_values;
4128
4129 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4130 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4131 out_resp->flags = property->flags;
4132
4133 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 4134 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 4135 for (i = 0; i < value_count; i++) {
4136 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4137 ret = -EFAULT;
4138 goto done;
4139 }
4140 }
4141 }
4142 out_resp->count_values = value_count;
4143
5ea22f24
RC		 4144 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4145 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 4146 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4147 copied = 0;
81f6c7f8 4148 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3758b341 4149 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 4150
4151 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4152 ret = -EFAULT;
4153 goto done;
4154 }
4155
4156 if (copy_to_user(&enum_ptr[copied].name,
4157 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4158 ret = -EFAULT;
4159 goto done;
4160 }
4161 copied++;
4162 }
4163 }
4164 out_resp->count_enum_blobs = enum_count;
4165 }
4166
3758b341
DV		 4167 /*
4168 * NOTE: The idea seems to have been to use this to read all the blob
4169 * property values. But nothing ever added them to the corresponding
4170 * list, userspace always used the special-purpose get_blob ioctl to
4171 * read the value for a blob property. It also doesn't make a lot of
4172 * sense to return values here when everything else is just metadata for
4173 * the property itself.
4174 */
4175 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4176 out_resp->count_enum_blobs = 0;
f453ba04 4177done:
84849903 4178 drm_modeset_unlock_all(dev);
f453ba04
DA		 4179 return ret;
4180}
4181
99531d9b
DS		 4182/**
4183 * drm_property_create_blob - Create new blob property
4184 *
4185 * Creates a new blob property for a specified DRM device, optionally
4186 * copying data.
4187 *
4188 * @dev: DRM device to create property for
4189 * @length: Length to allocate for blob data
4190 * @data: If specified, copies data into blob
10e8cb7e
DS		 4191 *
4192 * Returns:
4193 * New blob property with a single reference on success, or an ERR_PTR
4194 * value on failure.
99531d9b 4195 */
6bcacf51 4196struct drm_property_blob *
ecbbe59b 4197drm_property_create_blob(struct drm_device *dev, size_t length,
12e6cecd 4198 const void *data)
f453ba04
DA		 4199{
4200 struct drm_property_blob *blob;
6bfc56aa 4201 int ret;
f453ba04 4202
99531d9b 4203 if (!length)
10e8cb7e 4204 return ERR_PTR(-EINVAL);
f453ba04
DA		 4205
4206 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4207 if (!blob)
10e8cb7e 4208 return ERR_PTR(-ENOMEM);
f453ba04 4209
e2f5d2ea
DS		 4210 /* This must be explicitly initialised, so we can safely call list_del
4211 * on it in the removal handler, even if it isn't in a file list. */
4212 INIT_LIST_HEAD(&blob->head_file);
8fb6e7a5 4213 blob->length = length;
6bcacf51 4214 blob->dev = dev;
8fb6e7a5 4215
99531d9b
DS		 4216 if (data)
4217 memcpy(blob->data, data, length);
8fb6e7a5
DS		 4218
4219 mutex_lock(&dev->mode_config.blob_lock);
4220
6bfc56aa
VS		 4221 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4222 if (ret) {
4223 kfree(blob);
8fb6e7a5 4224 mutex_unlock(&dev->mode_config.blob_lock);
10e8cb7e 4225 return ERR_PTR(-EINVAL);
6bfc56aa
VS		 4226 }
4227
6bcacf51 4228 kref_init(&blob->refcount);
f453ba04 4229
e2f5d2ea
DS		 4230 list_add_tail(&blob->head_global,
4231 &dev->mode_config.property_blob_list);
f453ba04 4232
8fb6e7a5 4233 mutex_unlock(&dev->mode_config.blob_lock);
f453ba04 4234
f453ba04
DA		 4235 return blob;
4236}
6bcacf51 4237EXPORT_SYMBOL(drm_property_create_blob);
f453ba04 4238
6bcacf51
DS		 4239/**
4240 * drm_property_free_blob - Blob property destructor
4241 *
4242 * Internal free function for blob properties; must not be used directly.
4243 *
f102c16e 4244 * @kref: Reference
6bcacf51
DS		 4245 */
4246static void drm_property_free_blob(struct kref *kref)
f453ba04 4247{
6bcacf51
DS		 4248 struct drm_property_blob *blob =
4249 container_of(kref, struct drm_property_blob, refcount);
4250
4251 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4252
e2f5d2ea
DS		 4253 list_del(&blob->head_global);
4254 list_del(&blob->head_file);
6bcacf51 4255 drm_mode_object_put(blob->dev, &blob->base);
8fb6e7a5 4256
f453ba04
DA		 4257 kfree(blob);
4258}
4259
6bcacf51
DS		 4260/**
4261 * drm_property_unreference_blob - Unreference a blob property
4262 *
4263 * Drop a reference on a blob property. May free the object.
4264 *
f102c16e 4265 * @blob: Pointer to blob property
6bcacf51
DS		 4266 */
4267void drm_property_unreference_blob(struct drm_property_blob *blob)
4268{
4269 struct drm_device *dev;
4270
4271 if (!blob)
4272 return;
4273
4274 dev = blob->dev;
4275
4276 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4277
4278 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4279 &dev->mode_config.blob_lock))
4280 mutex_unlock(&dev->mode_config.blob_lock);
4281 else
4282 might_lock(&dev->mode_config.blob_lock);
4283
4284}
4285EXPORT_SYMBOL(drm_property_unreference_blob);
4286
4287/**
4288 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4289 *
4290 * Drop a reference on a blob property. May free the object. This must be
4291 * called with blob_lock held.
4292 *
f102c16e 4293 * @blob: Pointer to blob property
6bcacf51
DS		 4294 */
4295static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4296{
4297 if (!blob)
4298 return;
4299
4300 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4301
4302 kref_put(&blob->refcount, drm_property_free_blob);
4303}
4304
e2f5d2ea
DS		 4305/**
4306 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4307 * @dev: DRM device
4308 * @file_priv: destroy all blobs owned by this file handle
4309 */
4310void drm_property_destroy_user_blobs(struct drm_device *dev,
4311 struct drm_file *file_priv)
4312{
4313 struct drm_property_blob *blob, *bt;
4314
4315 mutex_lock(&dev->mode_config.blob_lock);
4316
4317 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4318 list_del_init(&blob->head_file);
4319 drm_property_unreference_blob_locked(blob);
4320 }
4321
4322 mutex_unlock(&dev->mode_config.blob_lock);
4323}
4324
6bcacf51
DS		 4325/**
4326 * drm_property_reference_blob - Take a reference on an existing property
4327 *
4328 * Take a new reference on an existing blob property.
4329 *
f102c16e 4330 * @blob: Pointer to blob property
6bcacf51
DS		 4331 */
4332struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4333{
4334 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4335 kref_get(&blob->refcount);
4336 return blob;
4337}
4338EXPORT_SYMBOL(drm_property_reference_blob);
4339
4340/*
4341 * Like drm_property_lookup_blob, but does not return an additional reference.
4342 * Must be called with blob_lock held.
4343 */
4344static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4345 uint32_t id)
4346{
4347 struct drm_mode_object *obj = NULL;
4348 struct drm_property_blob *blob;
4349
4350 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4351
4352 mutex_lock(&dev->mode_config.idr_mutex);
4353 obj = idr_find(&dev->mode_config.crtc_idr, id);
4354 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4355 blob = NULL;
4356 else
4357 blob = obj_to_blob(obj);
4358 mutex_unlock(&dev->mode_config.idr_mutex);
4359
4360 return blob;
4361}
4362
4363/**
4364 * drm_property_lookup_blob - look up a blob property and take a reference
4365 * @dev: drm device
4366 * @id: id of the blob property
4367 *
4368 * If successful, this takes an additional reference to the blob property.
4369 * callers need to make sure to eventually unreference the returned property
4370 * again, using @drm_property_unreference_blob.
4371 */
4372struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4373 uint32_t id)
4374{
4375 struct drm_property_blob *blob;
4376
4377 mutex_lock(&dev->mode_config.blob_lock);
4378 blob = __drm_property_lookup_blob(dev, id);
4379 if (blob) {
4380 if (!kref_get_unless_zero(&blob->refcount))
4381 blob = NULL;
4382 }
4383 mutex_unlock(&dev->mode_config.blob_lock);
4384
4385 return blob;
4386}
4387EXPORT_SYMBOL(drm_property_lookup_blob);
4388
d2ed3436
DS		 4389/**
4390 * drm_property_replace_global_blob - atomically replace existing blob property
4391 * @dev: drm device
4392 * @replace: location of blob property pointer to be replaced
4393 * @length: length of data for new blob, or 0 for no data
4394 * @data: content for new blob, or NULL for no data
4395 * @obj_holds_id: optional object for property holding blob ID
4396 * @prop_holds_id: optional property holding blob ID
4397 * @return 0 on success or error on failure
4398 *
4399 * This function will atomically replace a global property in the blob list,
4400 * optionally updating a property which holds the ID of that property. It is
4401 * guaranteed to be atomic: no caller will be allowed to see intermediate
4402 * results, and either the entire operation will succeed and clean up the
4403 * previous property, or it will fail and the state will be unchanged.
4404 *
4405 * If length is 0 or data is NULL, no new blob will be created, and the holding
4406 * property, if specified, will be set to 0.
4407 *
4408 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4409 * by holding the relevant modesetting object lock for its parent.
4410 *
4411 * For example, a drm_connector has a 'PATH' property, which contains the ID
4412 * of a blob property with the value of the MST path information. Calling this
4413 * function with replace pointing to the connector's path_blob_ptr, length and
4414 * data set for the new path information, obj_holds_id set to the connector's
4415 * base object, and prop_holds_id set to the path property name, will perform
4416 * a completely atomic update. The access to path_blob_ptr is protected by the
4417 * caller holding a lock on the connector.
4418 */
4419static int drm_property_replace_global_blob(struct drm_device *dev,
4420 struct drm_property_blob **replace,
4421 size_t length,
4422 const void *data,
4423 struct drm_mode_object *obj_holds_id,
4424 struct drm_property *prop_holds_id)
4425{
4426 struct drm_property_blob *new_blob = NULL;
4427 struct drm_property_blob *old_blob = NULL;
4428 int ret;
4429
4430 WARN_ON(replace == NULL);
4431
4432 old_blob = *replace;
4433
4434 if (length && data) {
4435 new_blob = drm_property_create_blob(dev, length, data);
10e8cb7e
DS		 4436 if (IS_ERR(new_blob))
4437 return PTR_ERR(new_blob);
d2ed3436
DS		 4438 }
4439
4440 /* This does not need to be synchronised with blob_lock, as the
4441 * get_properties ioctl locks all modesetting objects, and
4442 * obj_holds_id must be locked before calling here, so we cannot
4443 * have its value out of sync with the list membership modified
4444 * below under blob_lock. */
4445 if (obj_holds_id) {
4446 ret = drm_object_property_set_value(obj_holds_id,
4447 prop_holds_id,
4448 new_blob ?
4449 new_blob->base.id : 0);
4450 if (ret != 0)
4451 goto err_created;
4452 }
4453
4454 if (old_blob)
6bcacf51 4455 drm_property_unreference_blob(old_blob);
d2ed3436
DS		 4456
4457 *replace = new_blob;
4458
4459 return 0;
4460
4461err_created:
6bcacf51 4462 drm_property_unreference_blob(new_blob);
d2ed3436
DS		 4463 return ret;
4464}
4465
c8e32cc1
DV		 4466/**
4467 * drm_mode_getblob_ioctl - get the contents of a blob property value
4468 * @dev: DRM device
4469 * @data: ioctl data
4470 * @file_priv: DRM file info
4471 *
4472 * This function retrieves the contents of a blob property. The value stored in
4473 * an object's blob property is just a normal modeset object id.
4474 *
4475 * Called by the user via ioctl.
4476 *
4477 * Returns:
1a498633 4478 * Zero on success, negative errno on failure.
c8e32cc1 4479 */
f453ba04
DA		 4480int drm_mode_getblob_ioctl(struct drm_device *dev,
4481 void *data, struct drm_file *file_priv)
4482{
f453ba04
DA		 4483 struct drm_mode_get_blob *out_resp = data;
4484 struct drm_property_blob *blob;
4485 int ret = 0;
81f6c7f8 4486 void __user *blob_ptr;
f453ba04 4487
fb3b06c8
DA		 4488 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4489 return -EINVAL;
4490
84849903 4491 drm_modeset_lock_all(dev);
8fb6e7a5 4492 mutex_lock(&dev->mode_config.blob_lock);
6bcacf51 4493 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
a2b34e22 4494 if (!blob) {
f27657f2 4495 ret = -ENOENT;
f453ba04
DA		 4496 goto done;
4497 }
f453ba04
DA		 4498
4499 if (out_resp->length == blob->length) {
81f6c7f8 4500 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4dfd909f 4501 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
f453ba04
DA		 4502 ret = -EFAULT;
4503 goto done;
4504 }
4505 }
4506 out_resp->length = blob->length;
4507
4508done:
8fb6e7a5 4509 mutex_unlock(&dev->mode_config.blob_lock);
84849903 4510 drm_modeset_unlock_all(dev);
f453ba04
DA		 4511 return ret;
4512}
4513
e2f5d2ea
DS		 4514/**
4515 * drm_mode_createblob_ioctl - create a new blob property
4516 * @dev: DRM device
4517 * @data: ioctl data
4518 * @file_priv: DRM file info
4519 *
4520 * This function creates a new blob property with user-defined values. In order
4521 * to give us sensible validation and checking when creating, rather than at
4522 * every potential use, we also require a type to be provided upfront.
4523 *
4524 * Called by the user via ioctl.
4525 *
4526 * Returns:
4527 * Zero on success, negative errno on failure.
4528 */
4529int drm_mode_createblob_ioctl(struct drm_device *dev,
4530 void *data, struct drm_file *file_priv)
4531{
4532 struct drm_mode_create_blob *out_resp = data;
4533 struct drm_property_blob *blob;
4534 void __user *blob_ptr;
4535 int ret = 0;
4536
4537 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4538 return -EINVAL;
4539
4540 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4541 if (IS_ERR(blob))
4542 return PTR_ERR(blob);
4543
4544 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4545 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4546 ret = -EFAULT;
4547 goto out_blob;
4548 }
4549
4550 /* Dropping the lock between create_blob and our access here is safe
4551 * as only the same file_priv can remove the blob; at this point, it is
4552 * not associated with any file_priv. */
4553 mutex_lock(&dev->mode_config.blob_lock);
4554 out_resp->blob_id = blob->base.id;
4555 list_add_tail(&file_priv->blobs, &blob->head_file);
4556 mutex_unlock(&dev->mode_config.blob_lock);
4557
4558 return 0;
4559
4560out_blob:
4561 drm_property_unreference_blob(blob);
4562 return ret;
4563}
4564
4565/**
4566 * drm_mode_destroyblob_ioctl - destroy a user blob property
4567 * @dev: DRM device
4568 * @data: ioctl data
4569 * @file_priv: DRM file info
4570 *
4571 * Destroy an existing user-defined blob property.
4572 *
4573 * Called by the user via ioctl.
4574 *
4575 * Returns:
4576 * Zero on success, negative errno on failure.
4577 */
4578int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4579 void *data, struct drm_file *file_priv)
4580{
4581 struct drm_mode_destroy_blob *out_resp = data;
4582 struct drm_property_blob *blob = NULL, *bt;
4583 bool found = false;
4584 int ret = 0;
4585
4586 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4587 return -EINVAL;
4588
4589 mutex_lock(&dev->mode_config.blob_lock);
4590 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4591 if (!blob) {
4592 ret = -ENOENT;
4593 goto err;
4594 }
4595
4596 /* Ensure the property was actually created by this user. */
4597 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4598 if (bt == blob) {
4599 found = true;
4600 break;
4601 }
4602 }
4603
4604 if (!found) {
4605 ret = -EPERM;
4606 goto err;
4607 }
4608
4609 /* We must drop head_file here, because we may not be the last
4610 * reference on the blob. */
4611 list_del_init(&blob->head_file);
4612 drm_property_unreference_blob_locked(blob);
4613 mutex_unlock(&dev->mode_config.blob_lock);
4614
4615 return 0;
4616
4617err:
4618 mutex_unlock(&dev->mode_config.blob_lock);
4619 return ret;
4620}
4621
cc7096fb
DA		 4622/**
4623 * drm_mode_connector_set_path_property - set tile property on connector
4624 * @connector: connector to set property on.
d2ed3436 4625 * @path: path to use for property; must not be NULL.
cc7096fb
DA		 4626 *
4627 * This creates a property to expose to userspace to specify a
4628 * connector path. This is mainly used for DisplayPort MST where
4629 * connectors have a topology and we want to allow userspace to give
4630 * them more meaningful names.
4631 *
4632 * Returns:
1a498633 4633 * Zero on success, negative errno on failure.
cc7096fb 4634 */
43aba7eb 4635int drm_mode_connector_set_path_property(struct drm_connector *connector,
12e6cecd 4636 const char *path)
43aba7eb
DA		 4637{
4638 struct drm_device *dev = connector->dev;
ecbbe59b 4639 int ret;
43aba7eb 4640
d2ed3436
DS		 4641 ret = drm_property_replace_global_blob(dev,
4642 &connector->path_blob_ptr,
4643 strlen(path) + 1,
4644 path,
4645 &connector->base,
4646 dev->mode_config.path_property);
43aba7eb
DA		 4647 return ret;
4648}
4649EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4650
6f134d7b
DA		 4651/**
4652 * drm_mode_connector_set_tile_property - set tile property on connector
4653 * @connector: connector to set property on.
4654 *
4655 * This looks up the tile information for a connector, and creates a
4656 * property for userspace to parse if it exists. The property is of
4657 * the form of 8 integers using ':' as a separator.
4658 *
4659 * Returns:
4660 * Zero on success, errno on failure.
4661 */
4662int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4663{
4664 struct drm_device *dev = connector->dev;
6f134d7b 4665 char tile[256];
d2ed3436 4666 int ret;
6f134d7b
DA		 4667
4668 if (!connector->has_tile) {
d2ed3436
DS		 4669 ret = drm_property_replace_global_blob(dev,
4670 &connector->tile_blob_ptr,
4671 0,
4672 NULL,
4673 &connector->base,
4674 dev->mode_config.tile_property);
6f134d7b
DA		 4675 return ret;
4676 }
4677
4678 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4679 connector->tile_group->id, connector->tile_is_single_monitor,
4680 connector->num_h_tile, connector->num_v_tile,
4681 connector->tile_h_loc, connector->tile_v_loc,
4682 connector->tile_h_size, connector->tile_v_size);
6f134d7b 4683
d2ed3436
DS		 4684 ret = drm_property_replace_global_blob(dev,
4685 &connector->tile_blob_ptr,
4686 strlen(tile) + 1,
4687 tile,
4688 &connector->base,
4689 dev->mode_config.tile_property);
6f134d7b
DA		 4690 return ret;
4691}
4692EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4693
c8e32cc1
DV		 4694/**
4695 * drm_mode_connector_update_edid_property - update the edid property of a connector
4696 * @connector: drm connector
4697 * @edid: new value of the edid property
4698 *
4699 * This function creates a new blob modeset object and assigns its id to the
4700 * connector's edid property.
4701 *
4702 * Returns:
1a498633 4703 * Zero on success, negative errno on failure.
c8e32cc1 4704 */
f453ba04 4705int drm_mode_connector_update_edid_property(struct drm_connector *connector,
12e6cecd 4706 const struct edid *edid)
f453ba04
DA		 4707{
4708 struct drm_device *dev = connector->dev;
d2ed3436 4709 size_t size = 0;
ecbbe59b 4710 int ret;
f453ba04 4711
4cf2b281
TW		 4712 /* ignore requests to set edid when overridden */
4713 if (connector->override_edid)
4714 return 0;
4715
d2ed3436
DS		 4716 if (edid)
4717 size = EDID_LENGTH + (1 + edid->extensions);
f453ba04 4718
d2ed3436
DS		 4719 ret = drm_property_replace_global_blob(dev,
4720 &connector->edid_blob_ptr,
4721 size,
4722 edid,
4723 &connector->base,
4724 dev->mode_config.edid_property);
f453ba04
DA		 4725 return ret;
4726}
4727EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4728
3843e71f
RC		 4729/* Some properties could refer to dynamic refcnt'd objects, or things that
4730 * need special locking to handle lifetime issues (ie. to ensure the prop
4731 * value doesn't become invalid part way through the property update due to
4732 * race). The value returned by reference via 'obj' should be passed back
4733 * to drm_property_change_valid_put() after the property is set (and the
4734 * object to which the property is attached has a chance to take it's own
4735 * reference).
4736 */
d34f20d6 4737bool drm_property_change_valid_get(struct drm_property *property,
3843e71f 4738 uint64_t value, struct drm_mode_object **ref)
26a34815 4739{
2ca651d1
TR		 4740 int i;
4741
26a34815
PZ		 4742 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4743 return false;
5ea22f24 4744
3843e71f
RC		 4745 *ref = NULL;
4746
5ea22f24 4747 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 4748 if (value < property->values[0] || value > property->values[1])
4749 return false;
4750 return true;
ebc44cf3
RC		 4751 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4752 int64_t svalue = U642I64(value);
4dfd909f 4753
ebc44cf3
RC		 4754 if (svalue < U642I64(property->values[0]) ||
4755 svalue > U642I64(property->values[1]))
4756 return false;
4757 return true;
5ea22f24 4758 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
592c20ee 4759 uint64_t valid_mask = 0;
4dfd909f 4760
49e27545
RC		 4761 for (i = 0; i < property->num_values; i++)
4762 valid_mask |= (1ULL << property->values[i]);
4763 return !(value & ~valid_mask);
5ea22f24 4764 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
6bcacf51
DS		 4765 struct drm_property_blob *blob;
4766
4767 if (value == 0)
4768 return true;
4769
4770 blob = drm_property_lookup_blob(property->dev, value);
4771 if (blob) {
4772 *ref = &blob->base;
4773 return true;
4774 } else {
4775 return false;
4776 }
98f75de4 4777 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
98f75de4
RC		 4778 /* a zero value for an object property translates to null: */
4779 if (value == 0)
4780 return true;
3843e71f
RC		 4781
4782 /* handle refcnt'd objects specially: */
4783 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4784 struct drm_framebuffer *fb;
4785 fb = drm_framebuffer_lookup(property->dev, value);
4786 if (fb) {
4787 *ref = &fb->base;
4788 return true;
4789 } else {
4790 return false;
4791 }
4792 } else {
4793 return _object_find(property->dev, value, property->values[0]) != NULL;
4794 }
26a34815 4795 }
2ca651d1
TR		 4796
4797 for (i = 0; i < property->num_values; i++)
4798 if (property->values[i] == value)
4799 return true;
4800 return false;
26a34815
PZ		 4801}
4802
d34f20d6 4803void drm_property_change_valid_put(struct drm_property *property,
3843e71f
RC		 4804 struct drm_mode_object *ref)
4805{
4806 if (!ref)
4807 return;
4808
4809 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4810 if (property->values[0] == DRM_MODE_OBJECT_FB)
4811 drm_framebuffer_unreference(obj_to_fb(ref));
da9b2a38
DS		 4812 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4813 drm_property_unreference_blob(obj_to_blob(ref));
3843e71f
RC		 4814}
4815
c8e32cc1
DV		 4816/**
4817 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4818 * @dev: DRM device
4819 * @data: ioctl data
4820 * @file_priv: DRM file info
4821 *
4822 * This function sets the current value for a connectors's property. It also
4823 * calls into a driver's ->set_property callback to update the hardware state
4824 *
4825 * Called by the user via ioctl.
4826 *
4827 * Returns:
1a498633 4828 * Zero on success, negative errno on failure.
c8e32cc1 4829 */
f453ba04
DA		 4830int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4831 void *data, struct drm_file *file_priv)
4832{
0057d8dd
PZ		 4833 struct drm_mode_connector_set_property *conn_set_prop = data;
4834 struct drm_mode_obj_set_property obj_set_prop = {
4835 .value = conn_set_prop->value,
4836 .prop_id = conn_set_prop->prop_id,
4837 .obj_id = conn_set_prop->connector_id,
4838 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4839 };
fb3b06c8 4840
0057d8dd
PZ		 4841 /* It does all the locking and checking we need */
4842 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 4843}
4844
c543188a
PZ		 4845static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4846 struct drm_property *property,
4847 uint64_t value)
4848{
4849 int ret = -EINVAL;
4850 struct drm_connector *connector = obj_to_connector(obj);
4851
4852 /* Do DPMS ourselves */
4853 if (property == connector->dev->mode_config.dpms_property) {
4854 if (connector->funcs->dpms)
4855 (*connector->funcs->dpms)(connector, (int)value);
4856 ret = 0;
4857 } else if (connector->funcs->set_property)
4858 ret = connector->funcs->set_property(connector, property, value);
4859
4860 /* store the property value if successful */
4861 if (!ret)
58495563 4862 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 4863 return ret;
4864}
4865
bffd9de0
PZ		 4866static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4867 struct drm_property *property,
4868 uint64_t value)
4869{
4870 int ret = -EINVAL;
4871 struct drm_crtc *crtc = obj_to_crtc(obj);
4872
4873 if (crtc->funcs->set_property)
4874 ret = crtc->funcs->set_property(crtc, property, value);
4875 if (!ret)
4876 drm_object_property_set_value(obj, property, value);
4877
4878 return ret;
4879}
4880
3a5f87c2
TW		 4881/**
4882 * drm_mode_plane_set_obj_prop - set the value of a property
4883 * @plane: drm plane object to set property value for
4884 * @property: property to set
4885 * @value: value the property should be set to
4886 *
4887 * This functions sets a given property on a given plane object. This function
4888 * calls the driver's ->set_property callback and changes the software state of
4889 * the property if the callback succeeds.
4890 *
4891 * Returns:
4892 * Zero on success, error code on failure.
4893 */
4894int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4895 struct drm_property *property,
4896 uint64_t value)
4d93914a
RC		 4897{
4898 int ret = -EINVAL;
3a5f87c2 4899 struct drm_mode_object *obj = &plane->base;
4d93914a
RC		 4900
4901 if (plane->funcs->set_property)
4902 ret = plane->funcs->set_property(plane, property, value);
4903 if (!ret)
4904 drm_object_property_set_value(obj, property, value);
4905
4906 return ret;
4907}
3a5f87c2 4908EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4d93914a 4909
c8e32cc1 4910/**
1a498633 4911 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
c8e32cc1
DV		 4912 * @dev: DRM device
4913 * @data: ioctl data
4914 * @file_priv: DRM file info
4915 *
4916 * This function retrieves the current value for an object's property. Compared
4917 * to the connector specific ioctl this one is extended to also work on crtc and
4918 * plane objects.
4919 *
4920 * Called by the user via ioctl.
4921 *
4922 * Returns:
1a498633 4923 * Zero on success, negative errno on failure.
c8e32cc1 4924 */
c543188a
PZ		 4925int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4926 struct drm_file *file_priv)
4927{
4928 struct drm_mode_obj_get_properties *arg = data;
4929 struct drm_mode_object *obj;
4930 int ret = 0;
c543188a
PZ		 4931
4932 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4933 return -EINVAL;
4934
84849903 4935 drm_modeset_lock_all(dev);
c543188a
PZ		 4936
4937 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4938 if (!obj) {
f27657f2 4939 ret = -ENOENT;
c543188a
PZ		 4940 goto out;
4941 }
4942 if (!obj->properties) {
4943 ret = -EINVAL;
4944 goto out;
4945 }
4946
88a48e29 4947 ret = get_properties(obj, file_priv->atomic,
95cbf110
RC		 4948 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4949 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4950 &arg->count_props);
c543188a 4951
c543188a 4952out:
84849903 4953 drm_modeset_unlock_all(dev);
c543188a
PZ		 4954 return ret;
4955}
4956
c8e32cc1
DV		 4957/**
4958 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4959 * @dev: DRM device
4960 * @data: ioctl data
4961 * @file_priv: DRM file info
4962 *
4963 * This function sets the current value for an object's property. It also calls
4964 * into a driver's ->set_property callback to update the hardware state.
4965 * Compared to the connector specific ioctl this one is extended to also work on
4966 * crtc and plane objects.
4967 *
4968 * Called by the user via ioctl.
4969 *
4970 * Returns:
1a498633 4971 * Zero on success, negative errno on failure.
c8e32cc1 4972 */
c543188a
PZ		 4973int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4974 struct drm_file *file_priv)
4975{
4976 struct drm_mode_obj_set_property *arg = data;
4977 struct drm_mode_object *arg_obj;
4978 struct drm_mode_object *prop_obj;
4979 struct drm_property *property;
3843e71f
RC		 4980 int i, ret = -EINVAL;
4981 struct drm_mode_object *ref;
c543188a
PZ		 4982
4983 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4984 return -EINVAL;
4985
84849903 4986 drm_modeset_lock_all(dev);
c543188a
PZ		 4987
4988 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 4989 if (!arg_obj) {
4990 ret = -ENOENT;
c543188a 4991 goto out;
f27657f2 4992 }
c543188a
PZ		 4993 if (!arg_obj->properties)
4994 goto out;
4995
7f88a9be 4996 for (i = 0; i < arg_obj->properties->count; i++)
b17cd757 4997 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
c543188a
PZ		 4998 break;
4999
7f88a9be 5000 if (i == arg_obj->properties->count)
c543188a
PZ		 5001 goto out;
5002
5003 prop_obj = drm_mode_object_find(dev, arg->prop_id,
5004 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 5005 if (!prop_obj) {
5006 ret = -ENOENT;
c543188a 5007 goto out;
f27657f2 5008 }
c543188a
PZ		 5009 property = obj_to_property(prop_obj);
5010
3843e71f 5011 if (!drm_property_change_valid_get(property, arg->value, &ref))
c543188a
PZ		 5012 goto out;
5013
5014 switch (arg_obj->type) {
5015 case DRM_MODE_OBJECT_CONNECTOR:
5016 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
5017 arg->value);
5018 break;
bffd9de0
PZ		 5019 case DRM_MODE_OBJECT_CRTC:
5020 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
5021 break;
4d93914a 5022 case DRM_MODE_OBJECT_PLANE:
3a5f87c2
TW		 5023 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
5024 property, arg->value);
4d93914a 5025 break;
c543188a
PZ		 5026 }
5027
3843e71f
RC		 5028 drm_property_change_valid_put(property, ref);
5029
c543188a 5030out:
84849903 5031 drm_modeset_unlock_all(dev);
c543188a
PZ		 5032 return ret;
5033}
5034
c8e32cc1
DV		 5035/**
5036 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5037 * @connector: connector to attach
5038 * @encoder: encoder to attach @connector to
5039 *
5040 * This function links up a connector to an encoder. Note that the routing
5041 * restrictions between encoders and crtcs are exposed to userspace through the
5042 * possible_clones and possible_crtcs bitmasks.
5043 *
5044 * Returns:
1a498633 5045 * Zero on success, negative errno on failure.
c8e32cc1 5046 */
f453ba04
DA		 5047int drm_mode_connector_attach_encoder(struct drm_connector *connector,
5048 struct drm_encoder *encoder)
5049{
5050 int i;
5051
5052 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5053 if (connector->encoder_ids[i] == 0) {
5054 connector->encoder_ids[i] = encoder->base.id;
5055 return 0;
5056 }
5057 }
5058 return -ENOMEM;
5059}
5060EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5061
c8e32cc1
DV		 5062/**
5063 * drm_mode_crtc_set_gamma_size - set the gamma table size
5064 * @crtc: CRTC to set the gamma table size for
5065 * @gamma_size: size of the gamma table
5066 *
5067 * Drivers which support gamma tables should set this to the supported gamma
5068 * table size when initializing the CRTC. Currently the drm core only supports a
5069 * fixed gamma table size.
5070 *
5071 * Returns:
1a498633 5072 * Zero on success, negative errno on failure.
c8e32cc1 5073 */
4cae5b84 5074int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 5075 int gamma_size)
f453ba04
DA		 5076{
5077 crtc->gamma_size = gamma_size;
5078
bd3f0ff9
TR		 5079 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5080 GFP_KERNEL);
f453ba04
DA		 5081 if (!crtc->gamma_store) {
5082 crtc->gamma_size = 0;
4cae5b84 5083 return -ENOMEM;
f453ba04
DA		 5084 }
5085
4cae5b84 5086 return 0;
f453ba04
DA		 5087}
5088EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5089
c8e32cc1
DV		 5090/**
5091 * drm_mode_gamma_set_ioctl - set the gamma table
5092 * @dev: DRM device
5093 * @data: ioctl data
5094 * @file_priv: DRM file info
5095 *
5096 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5097 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5098 *
5099 * Called by the user via ioctl.
5100 *
5101 * Returns:
1a498633 5102 * Zero on success, negative errno on failure.
c8e32cc1 5103 */
f453ba04
DA		 5104int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5105 void *data, struct drm_file *file_priv)
5106{
5107 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 5108 struct drm_crtc *crtc;
5109 void *r_base, *g_base, *b_base;
5110 int size;
5111 int ret = 0;
5112
fb3b06c8
DA		 5113 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5114 return -EINVAL;
5115
84849903 5116 drm_modeset_lock_all(dev);
a2b34e22
RC		 5117 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5118 if (!crtc) {
f27657f2 5119 ret = -ENOENT;
f453ba04
DA		 5120 goto out;
5121 }
f453ba04 5122
ebe0f244
LP		 5123 if (crtc->funcs->gamma_set == NULL) {
5124 ret = -ENOSYS;
5125 goto out;
5126 }
5127
f453ba04
DA		 5128 /* memcpy into gamma store */
5129 if (crtc_lut->gamma_size != crtc->gamma_size) {
5130 ret = -EINVAL;
5131 goto out;
5132 }
5133
5134 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5135 r_base = crtc->gamma_store;
5136 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5137 ret = -EFAULT;
5138 goto out;
5139 }
5140
5141 g_base = r_base + size;
5142 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5143 ret = -EFAULT;
5144 goto out;
5145 }
5146
5147 b_base = g_base + size;
5148 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5149 ret = -EFAULT;
5150 goto out;
5151 }
5152
7203425a 5153 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 5154
5155out:
84849903 5156 drm_modeset_unlock_all(dev);
f453ba04
DA		 5157 return ret;
5158
5159}
5160
c8e32cc1
DV		 5161/**
5162 * drm_mode_gamma_get_ioctl - get the gamma table
5163 * @dev: DRM device
5164 * @data: ioctl data
5165 * @file_priv: DRM file info
5166 *
5167 * Copy the current gamma table into the storage provided. This also provides
5168 * the gamma table size the driver expects, which can be used to size the
5169 * allocated storage.
5170 *
5171 * Called by the user via ioctl.
5172 *
5173 * Returns:
1a498633 5174 * Zero on success, negative errno on failure.
c8e32cc1 5175 */
f453ba04
DA		 5176int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5177 void *data, struct drm_file *file_priv)
5178{
5179 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 5180 struct drm_crtc *crtc;
5181 void *r_base, *g_base, *b_base;
5182 int size;
5183 int ret = 0;
5184
fb3b06c8
DA		 5185 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5186 return -EINVAL;
5187
84849903 5188 drm_modeset_lock_all(dev);
a2b34e22
RC		 5189 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5190 if (!crtc) {
f27657f2 5191 ret = -ENOENT;
f453ba04
DA		 5192 goto out;
5193 }
f453ba04
DA		 5194
5195 /* memcpy into gamma store */
5196 if (crtc_lut->gamma_size != crtc->gamma_size) {
5197 ret = -EINVAL;
5198 goto out;
5199 }
5200
5201 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5202 r_base = crtc->gamma_store;
5203 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5204 ret = -EFAULT;
5205 goto out;
5206 }
5207
5208 g_base = r_base + size;
5209 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5210 ret = -EFAULT;
5211 goto out;
5212 }
5213
5214 b_base = g_base + size;
5215 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5216 ret = -EFAULT;
5217 goto out;
5218 }
5219out:
84849903 5220 drm_modeset_unlock_all(dev);
f453ba04
DA		 5221 return ret;
5222}
d91d8a3f 5223
c8e32cc1
DV		 5224/**
5225 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5226 * @dev: DRM device
5227 * @data: ioctl data
5228 * @file_priv: DRM file info
5229 *
5230 * This schedules an asynchronous update on a given CRTC, called page flip.
5231 * Optionally a drm event is generated to signal the completion of the event.
5232 * Generic drivers cannot assume that a pageflip with changed framebuffer
5233 * properties (including driver specific metadata like tiling layout) will work,
5234 * but some drivers support e.g. pixel format changes through the pageflip
5235 * ioctl.
5236 *
5237 * Called by the user via ioctl.
5238 *
5239 * Returns:
1a498633 5240 * Zero on success, negative errno on failure.
c8e32cc1 5241 */
d91d8a3f
KH		 5242int drm_mode_page_flip_ioctl(struct drm_device *dev,
5243 void *data, struct drm_file *file_priv)
5244{
5245 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 5246 struct drm_crtc *crtc;
3d30a59b 5247 struct drm_framebuffer *fb = NULL;
d91d8a3f
KH		 5248 struct drm_pending_vblank_event *e = NULL;
5249 unsigned long flags;
5250 int ret = -EINVAL;
5251
5252 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5253 page_flip->reserved != 0)
5254 return -EINVAL;
5255
62f2104f
KP		 5256 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5257 return -EINVAL;
5258
a2b34e22
RC		 5259 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5260 if (!crtc)
f27657f2 5261 return -ENOENT;
d91d8a3f 5262
4d02e2de 5263 drm_modeset_lock_crtc(crtc, crtc->primary);
f4510a27 5264 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 5265 /* The framebuffer is currently unbound, presumably
5266 * due to a hotplug event, that userspace has not
5267 * yet discovered.
5268 */
5269 ret = -EBUSY;
5270 goto out;
5271 }
5272
d91d8a3f
KH		 5273 if (crtc->funcs->page_flip == NULL)
5274 goto out;
5275
786b99ed 5276 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 5277 if (!fb) {
5278 ret = -ENOENT;
d91d8a3f 5279 goto out;
37c4e705 5280 }
d91d8a3f 5281
c11e9283
DL		 5282 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5283 if (ret)
5f61bb42 5284 goto out;
5f61bb42 5285
f4510a27 5286 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 5287 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5288 ret = -EINVAL;
5289 goto out;
5290 }
5291
d91d8a3f
KH		 5292 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5293 ret = -ENOMEM;
5294 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5295 if (file_priv->event_space < sizeof(e->event)) {
d91d8a3f
KH		 5296 spin_unlock_irqrestore(&dev->event_lock, flags);
5297 goto out;
5298 }
f76511b9 5299 file_priv->event_space -= sizeof(e->event);
d91d8a3f
KH		 5300 spin_unlock_irqrestore(&dev->event_lock, flags);
5301
f76511b9 5302 e = kzalloc(sizeof(*e), GFP_KERNEL);
d91d8a3f
KH		 5303 if (e == NULL) {
5304 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5305 file_priv->event_space += sizeof(e->event);
d91d8a3f
KH		 5306 spin_unlock_irqrestore(&dev->event_lock, flags);
5307 goto out;
5308 }
5309
7bd4d7be 5310 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
f76511b9 5311 e->event.base.length = sizeof(e->event);
d91d8a3f
KH		 5312 e->event.user_data = page_flip->user_data;
5313 e->base.event = &e->event.base;
5314 e->base.file_priv = file_priv;
5315 e->base.destroy =
5316 (void (*) (struct drm_pending_event *)) kfree;
5317 }
5318
3d30a59b 5319 crtc->primary->old_fb = crtc->primary->fb;
ed8d1975 5320 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 5321 if (ret) {
aef6a7ee
JS		 5322 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5323 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5324 file_priv->event_space += sizeof(e->event);
aef6a7ee
JS		 5325 spin_unlock_irqrestore(&dev->event_lock, flags);
5326 kfree(e);
5327 }
b0d12325 5328 /* Keep the old fb, don't unref it. */
3d30a59b 5329 crtc->primary->old_fb = NULL;
b0d12325 5330 } else {
8cf1e981
TR		 5331 /*
5332 * Warn if the driver hasn't properly updated the crtc->fb
5333 * field to reflect that the new framebuffer is now used.
5334 * Failing to do so will screw with the reference counting
5335 * on framebuffers.
5336 */
f4510a27 5337 WARN_ON(crtc->primary->fb != fb);
b0d12325
DV		 5338 /* Unref only the old framebuffer. */
5339 fb = NULL;
d91d8a3f
KH		 5340 }
5341
5342out:
b0d12325
DV		 5343 if (fb)
5344 drm_framebuffer_unreference(fb);
3d30a59b
DV		 5345 if (crtc->primary->old_fb)
5346 drm_framebuffer_unreference(crtc->primary->old_fb);
5347 crtc->primary->old_fb = NULL;
d059f652 5348 drm_modeset_unlock_crtc(crtc);
b4d5e7d1 5349
d91d8a3f
KH		 5350 return ret;
5351}
eb033556 5352
c8e32cc1
DV		 5353/**
5354 * drm_mode_config_reset - call ->reset callbacks
5355 * @dev: drm device
5356 *
5357 * This functions calls all the crtc's, encoder's and connector's ->reset
5358 * callback. Drivers can use this in e.g. their driver load or resume code to
5359 * reset hardware and software state.
5360 */
eb033556
CW		 5361void drm_mode_config_reset(struct drm_device *dev)
5362{
5363 struct drm_crtc *crtc;
2a0d7cfd 5364 struct drm_plane *plane;
eb033556
CW		 5365 struct drm_encoder *encoder;
5366 struct drm_connector *connector;
5367
2a0d7cfd
DV		 5368 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
5369 if (plane->funcs->reset)
5370 plane->funcs->reset(plane);
5371
eb033556
CW		 5372 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
5373 if (crtc->funcs->reset)
5374 crtc->funcs->reset(crtc);
5375
5376 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
5377 if (encoder->funcs->reset)
5378 encoder->funcs->reset(encoder);
5379
5e2cb2f6
DV		 5380 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
5381 connector->status = connector_status_unknown;
5382
eb033556
CW		 5383 if (connector->funcs->reset)
5384 connector->funcs->reset(connector);
5e2cb2f6 5385 }
eb033556
CW		 5386}
5387EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 5388
c8e32cc1
DV		 5389/**
5390 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5391 * @dev: DRM device
5392 * @data: ioctl data
5393 * @file_priv: DRM file info
5394 *
5395 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5396 * TTM or something else entirely) and returns the resulting buffer handle. This
5397 * handle can then be wrapped up into a framebuffer modeset object.
5398 *
5399 * Note that userspace is not allowed to use such objects for render
5400 * acceleration - drivers must create their own private ioctls for such a use
5401 * case.
5402 *
5403 * Called by the user via ioctl.
5404 *
5405 * Returns:
1a498633 5406 * Zero on success, negative errno on failure.
c8e32cc1 5407 */
ff72145b
DA		 5408int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5409 void *data, struct drm_file *file_priv)
5410{
5411 struct drm_mode_create_dumb *args = data;
b28cd41f 5412 u32 cpp, stride, size;
ff72145b
DA		 5413
5414 if (!dev->driver->dumb_create)
5415 return -ENOSYS;
b28cd41f
DH		 5416 if (!args->width || !args->height || !args->bpp)
5417 return -EINVAL;
5418
5419 /* overflow checks for 32bit size calculations */
00e72089 5420 /* NOTE: DIV_ROUND_UP() can overflow */
b28cd41f 5421 cpp = DIV_ROUND_UP(args->bpp, 8);
00e72089 5422 if (!cpp || cpp > 0xffffffffU / args->width)
b28cd41f
DH		 5423 return -EINVAL;
5424 stride = cpp * args->width;
5425 if (args->height > 0xffffffffU / stride)
5426 return -EINVAL;
5427
5428 /* test for wrap-around */
5429 size = args->height * stride;
5430 if (PAGE_ALIGN(size) == 0)
5431 return -EINVAL;
5432
f6085952
TR		 5433 /*
5434 * handle, pitch and size are output parameters. Zero them out to
5435 * prevent drivers from accidentally using uninitialized data. Since
5436 * not all existing userspace is clearing these fields properly we
5437 * cannot reject IOCTL with garbage in them.
5438 */
5439 args->handle = 0;
5440 args->pitch = 0;
5441 args->size = 0;
5442
ff72145b
DA		 5443 return dev->driver->dumb_create(file_priv, dev, args);
5444}
5445
c8e32cc1
DV		 5446/**
5447 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5448 * @dev: DRM device
5449 * @data: ioctl data
5450 * @file_priv: DRM file info
5451 *
5452 * Allocate an offset in the drm device node's address space to be able to
5453 * memory map a dumb buffer.
5454 *
5455 * Called by the user via ioctl.
5456 *
5457 * Returns:
1a498633 5458 * Zero on success, negative errno on failure.
c8e32cc1 5459 */
ff72145b
DA		 5460int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5461 void *data, struct drm_file *file_priv)
5462{
5463 struct drm_mode_map_dumb *args = data;
5464
5465 /* call driver ioctl to get mmap offset */
5466 if (!dev->driver->dumb_map_offset)
5467 return -ENOSYS;
5468
5469 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5470}
5471
c8e32cc1
DV		 5472/**
5473 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5474 * @dev: DRM device
5475 * @data: ioctl data
5476 * @file_priv: DRM file info
5477 *
5478 * This destroys the userspace handle for the given dumb backing storage buffer.
5479 * Since buffer objects must be reference counted in the kernel a buffer object
5480 * won't be immediately freed if a framebuffer modeset object still uses it.
5481 *
5482 * Called by the user via ioctl.
5483 *
5484 * Returns:
1a498633 5485 * Zero on success, negative errno on failure.
c8e32cc1 5486 */
ff72145b
DA		 5487int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5488 void *data, struct drm_file *file_priv)
5489{
5490 struct drm_mode_destroy_dumb *args = data;
5491
5492 if (!dev->driver->dumb_destroy)
5493 return -ENOSYS;
5494
5495 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5496}
248dbc23 5497
c8e32cc1
DV		 5498/**
5499 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5500 * @format: pixel format (DRM_FORMAT_*)
5501 * @depth: storage for the depth value
5502 * @bpp: storage for the bpp value
5503 *
5504 * This only supports RGB formats here for compat with code that doesn't use
5505 * pixel formats directly yet.
248dbc23
DA		 5506 */
5507void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5508 int *bpp)
5509{
5510 switch (format) {
c51a6bc5 5511 case DRM_FORMAT_C8:
04b3924d
VS		 5512 case DRM_FORMAT_RGB332:
5513 case DRM_FORMAT_BGR233:
248dbc23
DA		 5514 *depth = 8;
5515 *bpp = 8;
5516 break;
04b3924d
VS		 5517 case DRM_FORMAT_XRGB1555:
5518 case DRM_FORMAT_XBGR1555:
5519 case DRM_FORMAT_RGBX5551:
5520 case DRM_FORMAT_BGRX5551:
5521 case DRM_FORMAT_ARGB1555:
5522 case DRM_FORMAT_ABGR1555:
5523 case DRM_FORMAT_RGBA5551:
5524 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 5525 *depth = 15;
5526 *bpp = 16;
5527 break;
04b3924d
VS		 5528 case DRM_FORMAT_RGB565:
5529 case DRM_FORMAT_BGR565:
248dbc23
DA		 5530 *depth = 16;
5531 *bpp = 16;
5532 break;
04b3924d
VS		 5533 case DRM_FORMAT_RGB888:
5534 case DRM_FORMAT_BGR888:
5535 *depth = 24;
5536 *bpp = 24;
5537 break;
5538 case DRM_FORMAT_XRGB8888:
5539 case DRM_FORMAT_XBGR8888:
5540 case DRM_FORMAT_RGBX8888:
5541 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 5542 *depth = 24;
5543 *bpp = 32;
5544 break;
04b3924d
VS		 5545 case DRM_FORMAT_XRGB2101010:
5546 case DRM_FORMAT_XBGR2101010:
5547 case DRM_FORMAT_RGBX1010102:
5548 case DRM_FORMAT_BGRX1010102:
5549 case DRM_FORMAT_ARGB2101010:
5550 case DRM_FORMAT_ABGR2101010:
5551 case DRM_FORMAT_RGBA1010102:
5552 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 5553 *depth = 30;
5554 *bpp = 32;
5555 break;
04b3924d
VS		 5556 case DRM_FORMAT_ARGB8888:
5557 case DRM_FORMAT_ABGR8888:
5558 case DRM_FORMAT_RGBA8888:
5559 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 5560 *depth = 32;
5561 *bpp = 32;
5562 break;
5563 default:
23c453a4
VS		 5564 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5565 drm_get_format_name(format));
248dbc23
DA		 5566 *depth = 0;
5567 *bpp = 0;
5568 break;
5569 }
5570}
5571EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 5572
5573/**
5574 * drm_format_num_planes - get the number of planes for format
5575 * @format: pixel format (DRM_FORMAT_*)
5576 *
c8e32cc1 5577 * Returns:
141670e9
VS		 5578 * The number of planes used by the specified pixel format.
5579 */
5580int drm_format_num_planes(uint32_t format)
5581{
5582 switch (format) {
5583 case DRM_FORMAT_YUV410:
5584 case DRM_FORMAT_YVU410:
5585 case DRM_FORMAT_YUV411:
5586 case DRM_FORMAT_YVU411:
5587 case DRM_FORMAT_YUV420:
5588 case DRM_FORMAT_YVU420:
5589 case DRM_FORMAT_YUV422:
5590 case DRM_FORMAT_YVU422:
5591 case DRM_FORMAT_YUV444:
5592 case DRM_FORMAT_YVU444:
5593 return 3;
5594 case DRM_FORMAT_NV12:
5595 case DRM_FORMAT_NV21:
5596 case DRM_FORMAT_NV16:
5597 case DRM_FORMAT_NV61:
ba623f6a
LP		 5598 case DRM_FORMAT_NV24:
5599 case DRM_FORMAT_NV42:
141670e9
VS		 5600 return 2;
5601 default:
5602 return 1;
5603 }
5604}
5605EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 5606
5607/**
5608 * drm_format_plane_cpp - determine the bytes per pixel value
5609 * @format: pixel format (DRM_FORMAT_*)
5610 * @plane: plane index
5611 *
c8e32cc1 5612 * Returns:
5a86bd55
VS		 5613 * The bytes per pixel value for the specified plane.
5614 */
5615int drm_format_plane_cpp(uint32_t format, int plane)
5616{
5617 unsigned int depth;
5618 int bpp;
5619
5620 if (plane >= drm_format_num_planes(format))
5621 return 0;
5622
5623 switch (format) {
5624 case DRM_FORMAT_YUYV:
5625 case DRM_FORMAT_YVYU:
5626 case DRM_FORMAT_UYVY:
5627 case DRM_FORMAT_VYUY:
5628 return 2;
5629 case DRM_FORMAT_NV12:
5630 case DRM_FORMAT_NV21:
5631 case DRM_FORMAT_NV16:
5632 case DRM_FORMAT_NV61:
ba623f6a
LP		 5633 case DRM_FORMAT_NV24:
5634 case DRM_FORMAT_NV42:
5a86bd55
VS		 5635 return plane ? 2 : 1;
5636 case DRM_FORMAT_YUV410:
5637 case DRM_FORMAT_YVU410:
5638 case DRM_FORMAT_YUV411:
5639 case DRM_FORMAT_YVU411:
5640 case DRM_FORMAT_YUV420:
5641 case DRM_FORMAT_YVU420:
5642 case DRM_FORMAT_YUV422:
5643 case DRM_FORMAT_YVU422:
5644 case DRM_FORMAT_YUV444:
5645 case DRM_FORMAT_YVU444:
5646 return 1;
5647 default:
5648 drm_fb_get_bpp_depth(format, &depth, &bpp);
5649 return bpp >> 3;
5650 }
5651}
5652EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 5653
5654/**
5655 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5656 * @format: pixel format (DRM_FORMAT_*)
5657 *
c8e32cc1 5658 * Returns:
01b68b04
VS		 5659 * The horizontal chroma subsampling factor for the
5660 * specified pixel format.
5661 */
5662int drm_format_horz_chroma_subsampling(uint32_t format)
5663{
5664 switch (format) {
5665 case DRM_FORMAT_YUV411:
5666 case DRM_FORMAT_YVU411:
5667 case DRM_FORMAT_YUV410:
5668 case DRM_FORMAT_YVU410:
5669 return 4;
5670 case DRM_FORMAT_YUYV:
5671 case DRM_FORMAT_YVYU:
5672 case DRM_FORMAT_UYVY:
5673 case DRM_FORMAT_VYUY:
5674 case DRM_FORMAT_NV12:
5675 case DRM_FORMAT_NV21:
5676 case DRM_FORMAT_NV16:
5677 case DRM_FORMAT_NV61:
5678 case DRM_FORMAT_YUV422:
5679 case DRM_FORMAT_YVU422:
5680 case DRM_FORMAT_YUV420:
5681 case DRM_FORMAT_YVU420:
5682 return 2;
5683 default:
5684 return 1;
5685 }
5686}
5687EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5688
5689/**
5690 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5691 * @format: pixel format (DRM_FORMAT_*)
5692 *
c8e32cc1 5693 * Returns:
01b68b04
VS		 5694 * The vertical chroma subsampling factor for the
5695 * specified pixel format.
5696 */
5697int drm_format_vert_chroma_subsampling(uint32_t format)
5698{
5699 switch (format) {
5700 case DRM_FORMAT_YUV410:
5701 case DRM_FORMAT_YVU410:
5702 return 4;
5703 case DRM_FORMAT_YUV420:
5704 case DRM_FORMAT_YVU420:
5705 case DRM_FORMAT_NV12:
5706 case DRM_FORMAT_NV21:
5707 return 2;
5708 default:
5709 return 1;
5710 }
5711}
5712EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3 5713
3c9855f6
VS		 5714/**
5715 * drm_rotation_simplify() - Try to simplify the rotation
5716 * @rotation: Rotation to be simplified
5717 * @supported_rotations: Supported rotations
5718 *
5719 * Attempt to simplify the rotation to a form that is supported.
5720 * Eg. if the hardware supports everything except DRM_REFLECT_X
5721 * one could call this function like this:
5722 *
5723 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5724 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5725 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5726 *
5727 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5728 * transforms the hardware supports, this function may not
5729 * be able to produce a supported transform, so the caller should
5730 * check the result afterwards.
5731 */
5732unsigned int drm_rotation_simplify(unsigned int rotation,
5733 unsigned int supported_rotations)
5734{
5735 if (rotation & ~supported_rotations) {
5736 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5737 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5738 }
5739
5740 return rotation;
5741}
5742EXPORT_SYMBOL(drm_rotation_simplify);
5743
87d24fc3
LP		 5744/**
5745 * drm_mode_config_init - initialize DRM mode_configuration structure
5746 * @dev: DRM device
5747 *
5748 * Initialize @dev's mode_config structure, used for tracking the graphics
5749 * configuration of @dev.
5750 *
5751 * Since this initializes the modeset locks, no locking is possible. Which is no
5752 * problem, since this should happen single threaded at init time. It is the
5753 * driver's problem to ensure this guarantee.
5754 *
5755 */
5756void drm_mode_config_init(struct drm_device *dev)
5757{
5758 mutex_init(&dev->mode_config.mutex);
51fd371b 5759 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5760 mutex_init(&dev->mode_config.idr_mutex);
5761 mutex_init(&dev->mode_config.fb_lock);
8fb6e7a5 5762 mutex_init(&dev->mode_config.blob_lock);
87d24fc3
LP		 5763 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5764 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5765 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5766 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5767 INIT_LIST_HEAD(&dev->mode_config.property_list);
5768 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5769 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5770 idr_init(&dev->mode_config.crtc_idr);
138f9ebb 5771 idr_init(&dev->mode_config.tile_idr);
87d24fc3
LP		 5772
5773 drm_modeset_lock_all(dev);
6b4959f4 5774 drm_mode_create_standard_properties(dev);
87d24fc3
LP		 5775 drm_modeset_unlock_all(dev);
5776
5777 /* Just to be sure */
5778 dev->mode_config.num_fb = 0;
5779 dev->mode_config.num_connector = 0;
5780 dev->mode_config.num_crtc = 0;
5781 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 5782 dev->mode_config.num_overlay_plane = 0;
5783 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 5784}
5785EXPORT_SYMBOL(drm_mode_config_init);
5786
5787/**
5788 * drm_mode_config_cleanup - free up DRM mode_config info
5789 * @dev: DRM device
5790 *
5791 * Free up all the connectors and CRTCs associated with this DRM device, then
5792 * free up the framebuffers and associated buffer objects.
5793 *
5794 * Note that since this /should/ happen single-threaded at driver/device
5795 * teardown time, no locking is required. It's the driver's job to ensure that
5796 * this guarantee actually holds true.
5797 *
5798 * FIXME: cleanup any dangling user buffer objects too
5799 */
5800void drm_mode_config_cleanup(struct drm_device *dev)
5801{
5802 struct drm_connector *connector, *ot;
5803 struct drm_crtc *crtc, *ct;
5804 struct drm_encoder *encoder, *enct;
5805 struct drm_framebuffer *fb, *fbt;
5806 struct drm_property *property, *pt;
5807 struct drm_property_blob *blob, *bt;
5808 struct drm_plane *plane, *plt;
5809
5810 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5811 head) {
5812 encoder->funcs->destroy(encoder);
5813 }
5814
5815 list_for_each_entry_safe(connector, ot,
5816 &dev->mode_config.connector_list, head) {
5817 connector->funcs->destroy(connector);
5818 }
5819
5820 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5821 head) {
5822 drm_property_destroy(dev, property);
5823 }
5824
5825 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
e2f5d2ea 5826 head_global) {
6bcacf51 5827 drm_property_unreference_blob(blob);
87d24fc3
LP		 5828 }
5829
5830 /*
5831 * Single-threaded teardown context, so it's not required to grab the
5832 * fb_lock to protect against concurrent fb_list access. Contrary, it
5833 * would actually deadlock with the drm_framebuffer_cleanup function.
5834 *
5835 * Also, if there are any framebuffers left, that's a driver leak now,
5836 * so politely WARN about this.
5837 */
5838 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5839 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5840 drm_framebuffer_remove(fb);
5841 }
5842
5843 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5844 head) {
5845 plane->funcs->destroy(plane);
5846 }
5847
5848 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5849 crtc->funcs->destroy(crtc);
5850 }
5851
138f9ebb 5852 idr_destroy(&dev->mode_config.tile_idr);
87d24fc3 5853 idr_destroy(&dev->mode_config.crtc_idr);
51fd371b 5854 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5855}
5856EXPORT_SYMBOL(drm_mode_config_cleanup);
c1df5f3c
VS		 5857
5858struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5859 unsigned int supported_rotations)
5860{
5861 static const struct drm_prop_enum_list props[] = {
5862 { DRM_ROTATE_0, "rotate-0" },
5863 { DRM_ROTATE_90, "rotate-90" },
5864 { DRM_ROTATE_180, "rotate-180" },
5865 { DRM_ROTATE_270, "rotate-270" },
5866 { DRM_REFLECT_X, "reflect-x" },
5867 { DRM_REFLECT_Y, "reflect-y" },
5868 };
5869
5870 return drm_property_create_bitmask(dev, 0, "rotation",
5871 props, ARRAY_SIZE(props),
5872 supported_rotations);
5873}
5874EXPORT_SYMBOL(drm_mode_create_rotation_property);
138f9ebb
DA		 5875
5876/**
5877 * DOC: Tile group
5878 *
5879 * Tile groups are used to represent tiled monitors with a unique
5880 * integer identifier. Tiled monitors using DisplayID v1.3 have
5881 * a unique 8-byte handle, we store this in a tile group, so we
5882 * have a common identifier for all tiles in a monitor group.
5883 */
5884static void drm_tile_group_free(struct kref *kref)
5885{
5886 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5887 struct drm_device *dev = tg->dev;
5888 mutex_lock(&dev->mode_config.idr_mutex);
5889 idr_remove(&dev->mode_config.tile_idr, tg->id);
5890 mutex_unlock(&dev->mode_config.idr_mutex);
5891 kfree(tg);
5892}
5893
5894/**
5895 * drm_mode_put_tile_group - drop a reference to a tile group.
5896 * @dev: DRM device
5897 * @tg: tile group to drop reference to.
5898 *
5899 * drop reference to tile group and free if 0.
5900 */
5901void drm_mode_put_tile_group(struct drm_device *dev,
5902 struct drm_tile_group *tg)
5903{
5904 kref_put(&tg->refcount, drm_tile_group_free);
5905}
5906
5907/**
5908 * drm_mode_get_tile_group - get a reference to an existing tile group
5909 * @dev: DRM device
5910 * @topology: 8-bytes unique per monitor.
5911 *
5912 * Use the unique bytes to get a reference to an existing tile group.
5913 *
5914 * RETURNS:
5915 * tile group or NULL if not found.
5916 */
5917struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5918 char topology[8])
5919{
5920 struct drm_tile_group *tg;
5921 int id;
5922 mutex_lock(&dev->mode_config.idr_mutex);
5923 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5924 if (!memcmp(tg->group_data, topology, 8)) {
5925 if (!kref_get_unless_zero(&tg->refcount))
5926 tg = NULL;
5927 mutex_unlock(&dev->mode_config.idr_mutex);
5928 return tg;
5929 }
5930 }
5931 mutex_unlock(&dev->mode_config.idr_mutex);
5932 return NULL;
5933}
81ddd1bc 5934EXPORT_SYMBOL(drm_mode_get_tile_group);
138f9ebb
DA		 5935
5936/**
5937 * drm_mode_create_tile_group - create a tile group from a displayid description
5938 * @dev: DRM device
5939 * @topology: 8-bytes unique per monitor.
5940 *
5941 * Create a tile group for the unique monitor, and get a unique
5942 * identifier for the tile group.
5943 *
5944 * RETURNS:
5945 * new tile group or error.
5946 */
5947struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5948 char topology[8])
5949{
5950 struct drm_tile_group *tg;
5951 int ret;
5952
5953 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5954 if (!tg)
5955 return ERR_PTR(-ENOMEM);
5956
5957 kref_init(&tg->refcount);
5958 memcpy(tg->group_data, topology, 8);
5959 tg->dev = dev;
5960
5961 mutex_lock(&dev->mode_config.idr_mutex);
5962 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5963 if (ret >= 0) {
5964 tg->id = ret;
5965 } else {
5966 kfree(tg);
5967 tg = ERR_PTR(ret);
5968 }
5969
5970 mutex_unlock(&dev->mode_config.idr_mutex);
5971 return tg;
5972}
81ddd1bc 5973EXPORT_SYMBOL(drm_mode_create_tile_group);
Linux kernel - Deliverables
This page took 0.768717 seconds and 5 git commands to generate.