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