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drm: Roll out drm_for_each_{plane,crtc,encoder}
[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 */
6295d607 618 drm_for_each_crtc(crtc, dev) {
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
6295d607 630 drm_for_each_plane(plane, dev) {
9125e618
VS		 631 if (plane->fb == fb)
632 drm_plane_force_disable(plane);
8cf5c917 633 }
b62584e3 634 drm_modeset_unlock_all(dev);
8cf5c917
JB		 635 }
636
f7eff60e 637 drm_framebuffer_unreference(fb);
f453ba04 638}
f7eff60e 639EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04 640
51fd371b
RC		 641DEFINE_WW_CLASS(crtc_ww_class);
642
f453ba04 643/**
e13161af
MR		 644 * drm_crtc_init_with_planes - Initialise a new CRTC object with
645 * specified primary and cursor planes.
f453ba04
DA		 646 * @dev: DRM device
647 * @crtc: CRTC object to init
e13161af
MR		 648 * @primary: Primary plane for CRTC
649 * @cursor: Cursor plane for CRTC
f453ba04
DA		 650 * @funcs: callbacks for the new CRTC
651 *
ad6f5c34 652 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 653 *
c8e32cc1 654 * Returns:
6bfc56aa 655 * Zero on success, error code on failure.
f453ba04 656 */
e13161af
MR		 657int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
658 struct drm_plane *primary,
fc1d3e44 659 struct drm_plane *cursor,
e13161af 660 const struct drm_crtc_funcs *funcs)
f453ba04 661{
51fd371b 662 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 663 int ret;
664
522cf91f
BG		 665 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
666 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
667
f453ba04
DA		 668 crtc->dev = dev;
669 crtc->funcs = funcs;
7c80e128 670 crtc->invert_dimensions = false;
f453ba04 671
51fd371b 672 drm_modeset_lock_init(&crtc->mutex);
6bfc56aa
VS		 673 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
674 if (ret)
baf698b0 675 return ret;
f453ba04 676
bffd9de0
PZ		 677 crtc->base.properties = &crtc->properties;
678
51fd371b
RC		 679 list_add_tail(&crtc->head, &config->crtc_list);
680 config->num_crtc++;
6bfc56aa 681
e13161af 682 crtc->primary = primary;
fc1d3e44 683 crtc->cursor = cursor;
e13161af
MR		 684 if (primary)
685 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
fc1d3e44
MR		 686 if (cursor)
687 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
e13161af 688
eab3bbef
DV		 689 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
690 drm_object_attach_property(&crtc->base, config->prop_active, 0);
955f3c33 691 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
eab3bbef
DV		 692 }
693
baf698b0 694 return 0;
f453ba04 695}
e13161af 696EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 697
698/**
ad6f5c34 699 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 700 * @crtc: CRTC to cleanup
701 *
ad6f5c34
VS		 702 * This function cleans up @crtc and removes it from the DRM mode setting
703 * core. Note that the function does *not* free the crtc structure itself,
704 * this is the responsibility of the caller.
f453ba04
DA		 705 */
706void drm_crtc_cleanup(struct drm_crtc *crtc)
707{
708 struct drm_device *dev = crtc->dev;
709
9e1c156f
SK		 710 kfree(crtc->gamma_store);
711 crtc->gamma_store = NULL;
f453ba04 712
51fd371b
RC		 713 drm_modeset_lock_fini(&crtc->mutex);
714
f453ba04
DA		 715 drm_mode_object_put(dev, &crtc->base);
716 list_del(&crtc->head);
717 dev->mode_config.num_crtc--;
3009c037
TR		 718
719 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
720 if (crtc->state && crtc->funcs->atomic_destroy_state)
721 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
a18c0af1
TR		 722
723 memset(crtc, 0, sizeof(*crtc));
f453ba04
DA		 724}
725EXPORT_SYMBOL(drm_crtc_cleanup);
726
db5f7a6e
RK		 727/**
728 * drm_crtc_index - find the index of a registered CRTC
729 * @crtc: CRTC to find index for
730 *
731 * Given a registered CRTC, return the index of that CRTC within a DRM
732 * device's list of CRTCs.
733 */
734unsigned int drm_crtc_index(struct drm_crtc *crtc)
735{
736 unsigned int index = 0;
737 struct drm_crtc *tmp;
738
e4f62546 739 drm_for_each_crtc(tmp, crtc->dev) {
db5f7a6e
RK		 740 if (tmp == crtc)
741 return index;
742
743 index++;
744 }
745
746 BUG();
747}
748EXPORT_SYMBOL(drm_crtc_index);
749
86f422d5 750/*
f453ba04
DA		 751 * drm_mode_remove - remove and free a mode
752 * @connector: connector list to modify
753 * @mode: mode to remove
754 *
f453ba04
DA		 755 * Remove @mode from @connector's mode list, then free it.
756 */
86f422d5
LD		 757static void drm_mode_remove(struct drm_connector *connector,
758 struct drm_display_mode *mode)
f453ba04
DA		 759{
760 list_del(&mode->head);
554f1d78 761 drm_mode_destroy(connector->dev, mode);
f453ba04 762}
f453ba04 763
b5571e9d
BB		 764/**
765 * drm_display_info_set_bus_formats - set the supported bus formats
766 * @info: display info to store bus formats in
e37bfa1a
BB		 767 * @formats: array containing the supported bus formats
768 * @num_formats: the number of entries in the fmts array
b5571e9d
BB		 769 *
770 * Store the supported bus formats in display info structure.
771 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
772 * a full list of available formats.
773 */
774int drm_display_info_set_bus_formats(struct drm_display_info *info,
775 const u32 *formats,
776 unsigned int num_formats)
777{
778 u32 *fmts = NULL;
779
780 if (!formats && num_formats)
781 return -EINVAL;
782
783 if (formats && num_formats) {
784 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
785 GFP_KERNEL);
944579c5 786 if (!fmts)
b5571e9d
BB		 787 return -ENOMEM;
788 }
789
790 kfree(info->bus_formats);
791 info->bus_formats = fmts;
792 info->num_bus_formats = num_formats;
793
794 return 0;
795}
796EXPORT_SYMBOL(drm_display_info_set_bus_formats);
797
eaf99c74
CW		 798/**
799 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
800 * @connector: connector to quwery
eaf99c74
CW		 801 *
802 * The kernel supports per-connector configration of its consoles through
803 * use of the video= parameter. This function parses that option and
804 * extracts the user's specified mode (or enable/disable status) for a
805 * particular connector. This is typically only used during the early fbdev
806 * setup.
807 */
808static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
809{
810 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
811 char *option = NULL;
812
813 if (fb_get_options(connector->name, &option))
814 return;
815
816 if (!drm_mode_parse_command_line_for_connector(option,
817 connector,
818 mode))
819 return;
820
821 if (mode->force) {
822 const char *s;
823
824 switch (mode->force) {
825 case DRM_FORCE_OFF:
826 s = "OFF";
827 break;
828 case DRM_FORCE_ON_DIGITAL:
829 s = "ON - dig";
830 break;
831 default:
832 case DRM_FORCE_ON:
833 s = "ON";
834 break;
835 }
836
837 DRM_INFO("forcing %s connector %s\n", connector->name, s);
838 connector->force = mode->force;
839 }
840
841 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
842 connector->name,
843 mode->xres, mode->yres,
844 mode->refresh_specified ? mode->refresh : 60,
845 mode->rb ? " reduced blanking" : "",
846 mode->margins ? " with margins" : "",
847 mode->interlace ? " interlaced" : "");
848}
849
f453ba04
DA		 850/**
851 * drm_connector_init - Init a preallocated connector
852 * @dev: DRM device
853 * @connector: the connector to init
854 * @funcs: callbacks for this connector
065a50ed 855 * @connector_type: user visible type of the connector
f453ba04 856 *
f453ba04
DA		 857 * Initialises a preallocated connector. Connectors should be
858 * subclassed as part of driver connector objects.
6bfc56aa 859 *
c8e32cc1 860 * Returns:
6bfc56aa 861 * Zero on success, error code on failure.
f453ba04 862 */
6bfc56aa
VS		 863int drm_connector_init(struct drm_device *dev,
864 struct drm_connector *connector,
865 const struct drm_connector_funcs *funcs,
866 int connector_type)
f453ba04 867{
ae16c597 868 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa 869 int ret;
b21e3afe
IM		 870 struct ida *connector_ida =
871 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 872
84849903 873 drm_modeset_lock_all(dev);
f453ba04 874
2ee39452 875 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
6bfc56aa 876 if (ret)
2abdd313 877 goto out_unlock;
6bfc56aa 878
7e3bdf4a 879 connector->base.properties = &connector->properties;
f453ba04
DA		 880 connector->dev = dev;
881 connector->funcs = funcs;
f453ba04
DA		 882 connector->connector_type = connector_type;
883 connector->connector_type_id =
b21e3afe
IM		 884 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
885 if (connector->connector_type_id < 0) {
886 ret = connector->connector_type_id;
2abdd313 887 goto out_put;
b21e3afe 888 }
2abdd313
JN		 889 connector->name =
890 kasprintf(GFP_KERNEL, "%s-%d",
891 drm_connector_enum_list[connector_type].name,
892 connector->connector_type_id);
893 if (!connector->name) {
894 ret = -ENOMEM;
895 goto out_put;
896 }
897
f453ba04
DA		 898 INIT_LIST_HEAD(&connector->probed_modes);
899 INIT_LIST_HEAD(&connector->modes);
900 connector->edid_blob_ptr = NULL;
5e2cb2f6 901 connector->status = connector_status_unknown;
f453ba04 902
eaf99c74
CW		 903 drm_connector_get_cmdline_mode(connector);
904
c7eb76f4
DV		 905 /* We should add connectors at the end to avoid upsetting the connector
906 * index too much. */
ae16c597
RC		 907 list_add_tail(&connector->head, &config->connector_list);
908 config->num_connector++;
f453ba04 909
a7331e5c 910 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 911 drm_object_attach_property(&connector->base,
ae16c597 912 config->edid_property,
a7331e5c 913 0);
f453ba04 914
58495563 915 drm_object_attach_property(&connector->base,
ae16c597
RC		 916 config->dpms_property, 0);
917
918 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
919 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
920 }
f453ba04 921
30f65707
TW		 922 connector->debugfs_entry = NULL;
923
2abdd313
JN		 924out_put:
925 if (ret)
926 drm_mode_object_put(dev, &connector->base);
927
928out_unlock:
84849903 929 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 930
931 return ret;
f453ba04
DA		 932}
933EXPORT_SYMBOL(drm_connector_init);
934
935/**
936 * drm_connector_cleanup - cleans up an initialised connector
937 * @connector: connector to cleanup
938 *
f453ba04
DA		 939 * Cleans up the connector but doesn't free the object.
940 */
941void drm_connector_cleanup(struct drm_connector *connector)
942{
943 struct drm_device *dev = connector->dev;
944 struct drm_display_mode *mode, *t;
945
40d9b043
DA		 946 if (connector->tile_group) {
947 drm_mode_put_tile_group(dev, connector->tile_group);
948 connector->tile_group = NULL;
949 }
950
f453ba04
DA		 951 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
952 drm_mode_remove(connector, mode);
953
954 list_for_each_entry_safe(mode, t, &connector->modes, head)
955 drm_mode_remove(connector, mode);
956
b21e3afe
IM		 957 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
958 connector->connector_type_id);
959
b5571e9d 960 kfree(connector->display_info.bus_formats);
f453ba04 961 drm_mode_object_put(dev, &connector->base);
2abdd313
JN		 962 kfree(connector->name);
963 connector->name = NULL;
f453ba04 964 list_del(&connector->head);
6380c509 965 dev->mode_config.num_connector--;
3009c037
TR		 966
967 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
968 if (connector->state && connector->funcs->atomic_destroy_state)
969 connector->funcs->atomic_destroy_state(connector,
970 connector->state);
a18c0af1
TR		 971
972 memset(connector, 0, sizeof(*connector));
f453ba04
DA		 973}
974EXPORT_SYMBOL(drm_connector_cleanup);
975
10f637bf
DV		 976/**
977 * drm_connector_index - find the index of a registered connector
978 * @connector: connector to find index for
979 *
980 * Given a registered connector, return the index of that connector within a DRM
981 * device's list of connectors.
982 */
983unsigned int drm_connector_index(struct drm_connector *connector)
984{
985 unsigned int index = 0;
986 struct drm_connector *tmp;
c7eb76f4
DV		 987 struct drm_mode_config *config = &connector->dev->mode_config;
988
989 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
10f637bf 990
9a9f5ce8 991 drm_for_each_connector(tmp, connector->dev) {
10f637bf
DV		 992 if (tmp == connector)
993 return index;
994
995 index++;
996 }
997
998 BUG();
999}
1000EXPORT_SYMBOL(drm_connector_index);
1001
34ea3d38
TW		 1002/**
1003 * drm_connector_register - register a connector
1004 * @connector: the connector to register
1005 *
1006 * Register userspace interfaces for a connector
1007 *
1008 * Returns:
1009 * Zero on success, error code on failure.
1010 */
1011int drm_connector_register(struct drm_connector *connector)
1012{
30f65707
TW		 1013 int ret;
1014
2ee39452
DA		 1015 drm_mode_object_register(connector->dev, &connector->base);
1016
30f65707
TW		 1017 ret = drm_sysfs_connector_add(connector);
1018 if (ret)
1019 return ret;
1020
1021 ret = drm_debugfs_connector_add(connector);
1022 if (ret) {
1023 drm_sysfs_connector_remove(connector);
1024 return ret;
1025 }
1026
1027 return 0;
34ea3d38
TW		 1028}
1029EXPORT_SYMBOL(drm_connector_register);
1030
1031/**
1032 * drm_connector_unregister - unregister a connector
1033 * @connector: the connector to unregister
1034 *
1035 * Unregister userspace interfaces for a connector
1036 */
1037void drm_connector_unregister(struct drm_connector *connector)
1038{
1039 drm_sysfs_connector_remove(connector);
30f65707 1040 drm_debugfs_connector_remove(connector);
34ea3d38
TW		 1041}
1042EXPORT_SYMBOL(drm_connector_unregister);
1043
1044
c8e32cc1
DV		 1045/**
1046 * drm_connector_unplug_all - unregister connector userspace interfaces
1047 * @dev: drm device
1048 *
1049 * This function unregisters all connector userspace interfaces in sysfs. Should
1050 * be call when the device is disconnected, e.g. from an usb driver's
1051 * ->disconnect callback.
1052 */
cbc7e221
DA		 1053void drm_connector_unplug_all(struct drm_device *dev)
1054{
1055 struct drm_connector *connector;
1056
9a9f5ce8 1057 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
cbc7e221 1058 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
34ea3d38 1059 drm_connector_unregister(connector);
cbc7e221
DA		 1060
1061}
1062EXPORT_SYMBOL(drm_connector_unplug_all);
1063
c8e32cc1
DV		 1064/**
1065 * drm_encoder_init - Init a preallocated encoder
1066 * @dev: drm device
1067 * @encoder: the encoder to init
1068 * @funcs: callbacks for this encoder
1069 * @encoder_type: user visible type of the encoder
1070 *
1071 * Initialises a preallocated encoder. Encoder should be
1072 * subclassed as part of driver encoder objects.
1073 *
1074 * Returns:
1075 * Zero on success, error code on failure.
1076 */
6bfc56aa 1077int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 1078 struct drm_encoder *encoder,
1079 const struct drm_encoder_funcs *funcs,
1080 int encoder_type)
f453ba04 1081{
6bfc56aa
VS		 1082 int ret;
1083
84849903 1084 drm_modeset_lock_all(dev);
f453ba04 1085
6bfc56aa
VS		 1086 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1087 if (ret)
e5748946 1088 goto out_unlock;
f453ba04 1089
6bfc56aa 1090 encoder->dev = dev;
f453ba04
DA		 1091 encoder->encoder_type = encoder_type;
1092 encoder->funcs = funcs;
e5748946
JN		 1093 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1094 drm_encoder_enum_list[encoder_type].name,
1095 encoder->base.id);
1096 if (!encoder->name) {
1097 ret = -ENOMEM;
1098 goto out_put;
1099 }
f453ba04
DA		 1100
1101 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1102 dev->mode_config.num_encoder++;
1103
e5748946
JN		 1104out_put:
1105 if (ret)
1106 drm_mode_object_put(dev, &encoder->base);
1107
1108out_unlock:
84849903 1109 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 1110
1111 return ret;
f453ba04
DA		 1112}
1113EXPORT_SYMBOL(drm_encoder_init);
1114
c8e32cc1
DV		 1115/**
1116 * drm_encoder_cleanup - cleans up an initialised encoder
1117 * @encoder: encoder to cleanup
1118 *
1119 * Cleans up the encoder but doesn't free the object.
1120 */
f453ba04
DA		 1121void drm_encoder_cleanup(struct drm_encoder *encoder)
1122{
1123 struct drm_device *dev = encoder->dev;
4dfd909f 1124
84849903 1125 drm_modeset_lock_all(dev);
f453ba04 1126 drm_mode_object_put(dev, &encoder->base);
e5748946 1127 kfree(encoder->name);
f453ba04 1128 list_del(&encoder->head);
6380c509 1129 dev->mode_config.num_encoder--;
84849903 1130 drm_modeset_unlock_all(dev);
a18c0af1
TR		 1131
1132 memset(encoder, 0, sizeof(*encoder));
f453ba04
DA		 1133}
1134EXPORT_SYMBOL(drm_encoder_cleanup);
1135
35f2c3ae 1136/**
dc415ff9 1137 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1138 * @dev: DRM device
1139 * @plane: plane object to init
1140 * @possible_crtcs: bitmask of possible CRTCs
1141 * @funcs: callbacks for the new plane
1142 * @formats: array of supported formats (%DRM_FORMAT_*)
1143 * @format_count: number of elements in @formats
dc415ff9 1144 * @type: type of plane (overlay, primary, cursor)
35f2c3ae 1145 *
dc415ff9 1146 * Initializes a plane object of type @type.
35f2c3ae 1147 *
c8e32cc1 1148 * Returns:
35f2c3ae
VS		 1149 * Zero on success, error code on failure.
1150 */
dc415ff9
MR		 1151int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1152 unsigned long possible_crtcs,
1153 const struct drm_plane_funcs *funcs,
1154 const uint32_t *formats, uint32_t format_count,
1155 enum drm_plane_type type)
8cf5c917 1156{
6b4959f4 1157 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 1158 int ret;
1159
6bfc56aa
VS		 1160 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1161 if (ret)
baf698b0 1162 return ret;
6bfc56aa 1163
4d02e2de
DV		 1164 drm_modeset_lock_init(&plane->mutex);
1165
4d93914a 1166 plane->base.properties = &plane->properties;
8cf5c917 1167 plane->dev = dev;
8cf5c917 1168 plane->funcs = funcs;
2f6c5389
TR		 1169 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1170 GFP_KERNEL);
8cf5c917
JB		 1171 if (!plane->format_types) {
1172 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1173 drm_mode_object_put(dev, &plane->base);
baf698b0 1174 return -ENOMEM;
8cf5c917
JB		 1175 }
1176
308e5bcb 1177 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1178 plane->format_count = format_count;
1179 plane->possible_crtcs = possible_crtcs;
dc415ff9 1180 plane->type = type;
8cf5c917 1181
6b4959f4
RC		 1182 list_add_tail(&plane->head, &config->plane_list);
1183 config->num_total_plane++;
dc415ff9 1184 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
6b4959f4 1185 config->num_overlay_plane++;
8cf5c917 1186
9922ab5a 1187 drm_object_attach_property(&plane->base,
6b4959f4 1188 config->plane_type_property,
9922ab5a
RC		 1189 plane->type);
1190
6b4959f4
RC		 1191 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1192 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1193 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1194 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1195 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1196 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1197 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1198 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1199 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1200 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1201 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1202 }
1203
baf698b0 1204 return 0;
8cf5c917 1205}
dc415ff9
MR		 1206EXPORT_SYMBOL(drm_universal_plane_init);
1207
1208/**
1209 * drm_plane_init - Initialize a legacy plane
1210 * @dev: DRM device
1211 * @plane: plane object to init
1212 * @possible_crtcs: bitmask of possible CRTCs
1213 * @funcs: callbacks for the new plane
1214 * @formats: array of supported formats (%DRM_FORMAT_*)
1215 * @format_count: number of elements in @formats
1216 * @is_primary: plane type (primary vs overlay)
1217 *
1218 * Legacy API to initialize a DRM plane.
1219 *
1220 * New drivers should call drm_universal_plane_init() instead.
1221 *
1222 * Returns:
1223 * Zero on success, error code on failure.
1224 */
1225int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1226 unsigned long possible_crtcs,
1227 const struct drm_plane_funcs *funcs,
1228 const uint32_t *formats, uint32_t format_count,
1229 bool is_primary)
1230{
1231 enum drm_plane_type type;
1232
1233 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1234 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1235 formats, format_count, type);
1236}
8cf5c917
JB		 1237EXPORT_SYMBOL(drm_plane_init);
1238
35f2c3ae
VS		 1239/**
1240 * drm_plane_cleanup - Clean up the core plane usage
1241 * @plane: plane to cleanup
1242 *
1243 * This function cleans up @plane and removes it from the DRM mode setting
1244 * core. Note that the function does *not* free the plane structure itself,
1245 * this is the responsibility of the caller.
1246 */
8cf5c917
JB		 1247void drm_plane_cleanup(struct drm_plane *plane)
1248{
1249 struct drm_device *dev = plane->dev;
1250
84849903 1251 drm_modeset_lock_all(dev);
8cf5c917
JB		 1252 kfree(plane->format_types);
1253 drm_mode_object_put(dev, &plane->base);
dc415ff9
MR		 1254
1255 BUG_ON(list_empty(&plane->head));
1256
1257 list_del(&plane->head);
1258 dev->mode_config.num_total_plane--;
1259 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1260 dev->mode_config.num_overlay_plane--;
84849903 1261 drm_modeset_unlock_all(dev);
3009c037
TR		 1262
1263 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1264 if (plane->state && plane->funcs->atomic_destroy_state)
1265 plane->funcs->atomic_destroy_state(plane, plane->state);
a18c0af1
TR		 1266
1267 memset(plane, 0, sizeof(*plane));
8cf5c917
JB		 1268}
1269EXPORT_SYMBOL(drm_plane_cleanup);
1270
10f637bf
DV		 1271/**
1272 * drm_plane_index - find the index of a registered plane
1273 * @plane: plane to find index for
1274 *
1275 * Given a registered plane, return the index of that CRTC within a DRM
1276 * device's list of planes.
1277 */
1278unsigned int drm_plane_index(struct drm_plane *plane)
1279{
1280 unsigned int index = 0;
1281 struct drm_plane *tmp;
1282
e4f62546 1283 drm_for_each_plane(tmp, plane->dev) {
10f637bf
DV		 1284 if (tmp == plane)
1285 return index;
1286
1287 index++;
1288 }
1289
1290 BUG();
1291}
1292EXPORT_SYMBOL(drm_plane_index);
1293
f81338a5
CK		 1294/**
1295 * drm_plane_from_index - find the registered plane at an index
1296 * @dev: DRM device
1297 * @idx: index of registered plane to find for
1298 *
1299 * Given a plane index, return the registered plane from DRM device's
1300 * list of planes with matching index.
1301 */
1302struct drm_plane *
1303drm_plane_from_index(struct drm_device *dev, int idx)
1304{
1305 struct drm_plane *plane;
1306 unsigned int i = 0;
1307
6295d607 1308 drm_for_each_plane(plane, dev) {
f81338a5
CK		 1309 if (i == idx)
1310 return plane;
1311 i++;
1312 }
1313 return NULL;
1314}
1315EXPORT_SYMBOL(drm_plane_from_index);
1316
35f2c3ae
VS		 1317/**
1318 * drm_plane_force_disable - Forcibly disable a plane
1319 * @plane: plane to disable
1320 *
1321 * Forces the plane to be disabled.
1322 *
1323 * Used when the plane's current framebuffer is destroyed,
1324 * and when restoring fbdev mode.
1325 */
9125e618
VS		 1326void drm_plane_force_disable(struct drm_plane *plane)
1327{
1328 int ret;
1329
3d30a59b 1330 if (!plane->fb)
9125e618
VS		 1331 return;
1332
3d30a59b 1333 plane->old_fb = plane->fb;
9125e618 1334 ret = plane->funcs->disable_plane(plane);
731cce48 1335 if (ret) {
9125e618 1336 DRM_ERROR("failed to disable plane with busy fb\n");
3d30a59b 1337 plane->old_fb = NULL;
731cce48
DV		 1338 return;
1339 }
9125e618 1340 /* disconnect the plane from the fb and crtc: */
220dd2bc 1341 drm_framebuffer_unreference(plane->old_fb);
3d30a59b 1342 plane->old_fb = NULL;
9125e618
VS		 1343 plane->fb = NULL;
1344 plane->crtc = NULL;
1345}
1346EXPORT_SYMBOL(drm_plane_force_disable);
1347
6b4959f4 1348static int drm_mode_create_standard_properties(struct drm_device *dev)
f453ba04 1349{
356af0e1 1350 struct drm_property *prop;
f453ba04
DA		 1351
1352 /*
1353 * Standard properties (apply to all connectors)
1354 */
356af0e1 1355 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
f453ba04
DA		 1356 DRM_MODE_PROP_IMMUTABLE,
1357 "EDID", 0);
356af0e1
RC		 1358 if (!prop)
1359 return -ENOMEM;
1360 dev->mode_config.edid_property = prop;
f453ba04 1361
356af0e1 1362 prop = drm_property_create_enum(dev, 0,
4a67d391
SH		 1363 "DPMS", drm_dpms_enum_list,
1364 ARRAY_SIZE(drm_dpms_enum_list));
356af0e1
RC		 1365 if (!prop)
1366 return -ENOMEM;
1367 dev->mode_config.dpms_property = prop;
6f134d7b 1368
356af0e1
RC		 1369 prop = drm_property_create(dev,
1370 DRM_MODE_PROP_BLOB |
1371 DRM_MODE_PROP_IMMUTABLE,
1372 "PATH", 0);
1373 if (!prop)
1374 return -ENOMEM;
1375 dev->mode_config.path_property = prop;
f453ba04 1376
356af0e1
RC		 1377 prop = drm_property_create(dev,
1378 DRM_MODE_PROP_BLOB |
1379 DRM_MODE_PROP_IMMUTABLE,
1380 "TILE", 0);
1381 if (!prop)
1382 return -ENOMEM;
1383 dev->mode_config.tile_property = prop;
9922ab5a 1384
6b4959f4 1385 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
9922ab5a
RC		 1386 "type", drm_plane_type_enum_list,
1387 ARRAY_SIZE(drm_plane_type_enum_list));
6b4959f4
RC		 1388 if (!prop)
1389 return -ENOMEM;
1390 dev->mode_config.plane_type_property = prop;
1391
1392 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1393 "SRC_X", 0, UINT_MAX);
1394 if (!prop)
1395 return -ENOMEM;
1396 dev->mode_config.prop_src_x = prop;
1397
1398 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1399 "SRC_Y", 0, UINT_MAX);
1400 if (!prop)
1401 return -ENOMEM;
1402 dev->mode_config.prop_src_y = prop;
1403
1404 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1405 "SRC_W", 0, UINT_MAX);
1406 if (!prop)
1407 return -ENOMEM;
1408 dev->mode_config.prop_src_w = prop;
1409
1410 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1411 "SRC_H", 0, UINT_MAX);
1412 if (!prop)
1413 return -ENOMEM;
1414 dev->mode_config.prop_src_h = prop;
1415
1416 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1417 "CRTC_X", INT_MIN, INT_MAX);
1418 if (!prop)
1419 return -ENOMEM;
1420 dev->mode_config.prop_crtc_x = prop;
1421
1422 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1423 "CRTC_Y", INT_MIN, INT_MAX);
1424 if (!prop)
1425 return -ENOMEM;
1426 dev->mode_config.prop_crtc_y = prop;
1427
1428 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1429 "CRTC_W", 0, INT_MAX);
1430 if (!prop)
1431 return -ENOMEM;
1432 dev->mode_config.prop_crtc_w = prop;
1433
1434 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1435 "CRTC_H", 0, INT_MAX);
1436 if (!prop)
1437 return -ENOMEM;
1438 dev->mode_config.prop_crtc_h = prop;
1439
1440 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1441 "FB_ID", DRM_MODE_OBJECT_FB);
1442 if (!prop)
1443 return -ENOMEM;
1444 dev->mode_config.prop_fb_id = prop;
1445
1446 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1447 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1448 if (!prop)
1449 return -ENOMEM;
1450 dev->mode_config.prop_crtc_id = prop;
9922ab5a 1451
eab3bbef
DV		 1452 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1453 "ACTIVE");
1454 if (!prop)
1455 return -ENOMEM;
1456 dev->mode_config.prop_active = prop;
1457
955f3c33
DS		 1458 prop = drm_property_create(dev,
1459 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1460 "MODE_ID", 0);
1461 if (!prop)
1462 return -ENOMEM;
1463 dev->mode_config.prop_mode_id = prop;
1464
9922ab5a
RC		 1465 return 0;
1466}
1467
f453ba04
DA		 1468/**
1469 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1470 * @dev: DRM device
1471 *
1472 * Called by a driver the first time a DVI-I connector is made.
1473 */
1474int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1475{
1476 struct drm_property *dvi_i_selector;
1477 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1478
1479 if (dev->mode_config.dvi_i_select_subconnector_property)
1480 return 0;
1481
1482 dvi_i_selector =
4a67d391 1483 drm_property_create_enum(dev, 0,
f453ba04 1484 "select subconnector",
4a67d391 1485 drm_dvi_i_select_enum_list,
f453ba04 1486 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1487 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1488
4a67d391 1489 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1490 "subconnector",
4a67d391 1491 drm_dvi_i_subconnector_enum_list,
f453ba04 1492 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1493 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1494
1495 return 0;
1496}
1497EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1498
1499/**
1500 * drm_create_tv_properties - create TV specific connector properties
1501 * @dev: DRM device
1502 * @num_modes: number of different TV formats (modes) supported
1503 * @modes: array of pointers to strings containing name of each format
1504 *
1505 * Called by a driver's TV initialization routine, this function creates
1506 * the TV specific connector properties for a given device. Caller is
1507 * responsible for allocating a list of format names and passing them to
1508 * this routine.
1509 */
2f763312
TR		 1510int drm_mode_create_tv_properties(struct drm_device *dev,
1511 unsigned int num_modes,
f453ba04
DA		 1512 char *modes[])
1513{
1514 struct drm_property *tv_selector;
1515 struct drm_property *tv_subconnector;
2f763312 1516 unsigned int i;
f453ba04
DA		 1517
1518 if (dev->mode_config.tv_select_subconnector_property)
1519 return 0;
1520
1521 /*
1522 * Basic connector properties
1523 */
4a67d391 1524 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1525 "select subconnector",
4a67d391 1526 drm_tv_select_enum_list,
f453ba04 1527 ARRAY_SIZE(drm_tv_select_enum_list));
f453ba04
DA		 1528 dev->mode_config.tv_select_subconnector_property = tv_selector;
1529
1530 tv_subconnector =
4a67d391
SH		 1531 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1532 "subconnector",
1533 drm_tv_subconnector_enum_list,
f453ba04 1534 ARRAY_SIZE(drm_tv_subconnector_enum_list));
f453ba04
DA		 1535 dev->mode_config.tv_subconnector_property = tv_subconnector;
1536
1537 /*
1538 * Other, TV specific properties: margins & TV modes.
1539 */
1540 dev->mode_config.tv_left_margin_property =
d9bc3c02 1541 drm_property_create_range(dev, 0, "left margin", 0, 100);
f453ba04
DA		 1542
1543 dev->mode_config.tv_right_margin_property =
d9bc3c02 1544 drm_property_create_range(dev, 0, "right margin", 0, 100);
f453ba04
DA		 1545
1546 dev->mode_config.tv_top_margin_property =
d9bc3c02 1547 drm_property_create_range(dev, 0, "top margin", 0, 100);
f453ba04
DA		 1548
1549 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1550 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
f453ba04
DA		 1551
1552 dev->mode_config.tv_mode_property =
1553 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1554 "mode", num_modes);
1555 for (i = 0; i < num_modes; i++)
1556 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1557 i, modes[i]);
1558
b6b7902e 1559 dev->mode_config.tv_brightness_property =
d9bc3c02 1560 drm_property_create_range(dev, 0, "brightness", 0, 100);
b6b7902e
FJ		 1561
1562 dev->mode_config.tv_contrast_property =
d9bc3c02 1563 drm_property_create_range(dev, 0, "contrast", 0, 100);
b6b7902e
FJ		 1564
1565 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1566 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
b6b7902e 1567
a75f0236 1568 dev->mode_config.tv_overscan_property =
d9bc3c02 1569 drm_property_create_range(dev, 0, "overscan", 0, 100);
a75f0236
FJ		 1570
1571 dev->mode_config.tv_saturation_property =
d9bc3c02 1572 drm_property_create_range(dev, 0, "saturation", 0, 100);
a75f0236
FJ		 1573
1574 dev->mode_config.tv_hue_property =
d9bc3c02 1575 drm_property_create_range(dev, 0, "hue", 0, 100);
a75f0236 1576
f453ba04
DA		 1577 return 0;
1578}
1579EXPORT_SYMBOL(drm_mode_create_tv_properties);
1580
1581/**
1582 * drm_mode_create_scaling_mode_property - create scaling mode property
1583 * @dev: DRM device
1584 *
1585 * Called by a driver the first time it's needed, must be attached to desired
1586 * connectors.
1587 */
1588int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1589{
1590 struct drm_property *scaling_mode;
f453ba04
DA		 1591
1592 if (dev->mode_config.scaling_mode_property)
1593 return 0;
1594
1595 scaling_mode =
4a67d391
SH		 1596 drm_property_create_enum(dev, 0, "scaling mode",
1597 drm_scaling_mode_enum_list,
f453ba04 1598 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1599
1600 dev->mode_config.scaling_mode_property = scaling_mode;
1601
1602 return 0;
1603}
1604EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1605
ff587e45
VK		 1606/**
1607 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1608 * @dev: DRM device
1609 *
1610 * Called by a driver the first time it's needed, must be attached to desired
1611 * connectors.
1612 *
1613 * Returns:
1a498633 1614 * Zero on success, negative errno on failure.
ff587e45
VK		 1615 */
1616int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1617{
1618 if (dev->mode_config.aspect_ratio_property)
1619 return 0;
1620
1621 dev->mode_config.aspect_ratio_property =
1622 drm_property_create_enum(dev, 0, "aspect ratio",
1623 drm_aspect_ratio_enum_list,
1624 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1625
1626 if (dev->mode_config.aspect_ratio_property == NULL)
1627 return -ENOMEM;
1628
1629 return 0;
1630}
1631EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1632
884840aa
JB		 1633/**
1634 * drm_mode_create_dirty_property - create dirty property
1635 * @dev: DRM device
1636 *
1637 * Called by a driver the first time it's needed, must be attached to desired
1638 * connectors.
1639 */
1640int drm_mode_create_dirty_info_property(struct drm_device *dev)
1641{
1642 struct drm_property *dirty_info;
884840aa
JB		 1643
1644 if (dev->mode_config.dirty_info_property)
1645 return 0;
1646
1647 dirty_info =
4a67d391 1648 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1649 "dirty",
4a67d391 1650 drm_dirty_info_enum_list,
884840aa 1651 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1652 dev->mode_config.dirty_info_property = dirty_info;
1653
1654 return 0;
1655}
1656EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1657
5bb2bbf5
DA		 1658/**
1659 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1660 * @dev: DRM device
1661 *
1662 * Create the the suggested x/y offset property for connectors.
1663 */
1664int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1665{
1666 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1667 return 0;
1668
1669 dev->mode_config.suggested_x_property =
1670 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1671
1672 dev->mode_config.suggested_y_property =
1673 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1674
1675 if (dev->mode_config.suggested_x_property == NULL ||
1676 dev->mode_config.suggested_y_property == NULL)
1677 return -ENOMEM;
1678 return 0;
1679}
1680EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1681
ea9cbb06 1682static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
f453ba04
DA		 1683{
1684 uint32_t total_objects = 0;
1685
1686 total_objects += dev->mode_config.num_crtc;
1687 total_objects += dev->mode_config.num_connector;
1688 total_objects += dev->mode_config.num_encoder;
1689
bd3f0ff9 1690 group->id_list = kcalloc(total_objects, sizeof(uint32_t), GFP_KERNEL);
f453ba04
DA		 1691 if (!group->id_list)
1692 return -ENOMEM;
1693
1694 group->num_crtcs = 0;
1695 group->num_connectors = 0;
1696 group->num_encoders = 0;
1697 return 0;
1698}
1699
ad222799
DA		 1700void drm_mode_group_destroy(struct drm_mode_group *group)
1701{
1702 kfree(group->id_list);
1703 group->id_list = NULL;
1704}
1705
c8e32cc1
DV		 1706/*
1707 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1708 * the drm core's responsibility to set up mode control groups.
1709 */
f453ba04
DA		 1710int drm_mode_group_init_legacy_group(struct drm_device *dev,
1711 struct drm_mode_group *group)
1712{
1713 struct drm_crtc *crtc;
1714 struct drm_encoder *encoder;
1715 struct drm_connector *connector;
1716 int ret;
1717
0cc0b223
TR		 1718 ret = drm_mode_group_init(dev, group);
1719 if (ret)
f453ba04
DA		 1720 return ret;
1721
e4f62546 1722 drm_for_each_crtc(crtc, dev)
f453ba04
DA		 1723 group->id_list[group->num_crtcs++] = crtc->base.id;
1724
e4f62546 1725 drm_for_each_encoder(encoder, dev)
f453ba04
DA		 1726 group->id_list[group->num_crtcs + group->num_encoders++] =
1727 encoder->base.id;
1728
9a9f5ce8 1729 drm_for_each_connector(connector, dev)
f453ba04
DA		 1730 group->id_list[group->num_crtcs + group->num_encoders +
1731 group->num_connectors++] = connector->base.id;
1732
1733 return 0;
1734}
9c1dfc55 1735EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
f453ba04 1736
2390cd11
DA		 1737void drm_reinit_primary_mode_group(struct drm_device *dev)
1738{
1739 drm_modeset_lock_all(dev);
1740 drm_mode_group_destroy(&dev->primary->mode_group);
1741 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1742 drm_modeset_unlock_all(dev);
1743}
1744EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1745
f453ba04
DA		 1746/**
1747 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1748 * @dev: drm device for the ioctl
1749 * @data: data pointer for the ioctl
1750 * @file_priv: drm file for the ioctl call
f453ba04 1751 *
f453ba04
DA		 1752 * Construct a set of configuration description structures and return
1753 * them to the user, including CRTC, connector and framebuffer configuration.
1754 *
1755 * Called by the user via ioctl.
1756 *
c8e32cc1 1757 * Returns:
1a498633 1758 * Zero on success, negative errno on failure.
f453ba04
DA		 1759 */
1760int drm_mode_getresources(struct drm_device *dev, void *data,
1761 struct drm_file *file_priv)
1762{
1763 struct drm_mode_card_res *card_res = data;
1764 struct list_head *lh;
1765 struct drm_framebuffer *fb;
1766 struct drm_connector *connector;
1767 struct drm_crtc *crtc;
1768 struct drm_encoder *encoder;
1769 int ret = 0;
1770 int connector_count = 0;
1771 int crtc_count = 0;
1772 int fb_count = 0;
1773 int encoder_count = 0;
1774 int copied = 0, i;
1775 uint32_t __user *fb_id;
1776 uint32_t __user *crtc_id;
1777 uint32_t __user *connector_id;
1778 uint32_t __user *encoder_id;
1779 struct drm_mode_group *mode_group;
1780
fb3b06c8
DA		 1781 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1782 return -EINVAL;
1783
f453ba04 1784
4b096ac1 1785 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1786 /*
1787 * For the non-control nodes we need to limit the list of resources
1788 * by IDs in the group list for this node
1789 */
1790 list_for_each(lh, &file_priv->fbs)
1791 fb_count++;
1792
4b096ac1
DV		 1793 /* handle this in 4 parts */
1794 /* FBs */
1795 if (card_res->count_fbs >= fb_count) {
1796 copied = 0;
1797 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1798 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1799 if (put_user(fb->base.id, fb_id + copied)) {
1800 mutex_unlock(&file_priv->fbs_lock);
1801 return -EFAULT;
1802 }
1803 copied++;
1804 }
1805 }
1806 card_res->count_fbs = fb_count;
1807 mutex_unlock(&file_priv->fbs_lock);
1808
fcf93f69
DV		 1809 /* mode_config.mutex protects the connector list against e.g. DP MST
1810 * connector hot-adding. CRTC/Plane lists are invariant. */
1811 mutex_lock(&dev->mode_config.mutex);
43683057 1812 if (!drm_is_primary_client(file_priv)) {
9a9f5ce8 1813 struct drm_connector *connector;
e4f62546
DV		 1814 struct drm_encoder *encoder;
1815 struct drm_crtc *crtc;
f453ba04 1816
09f308f7 1817 mode_group = NULL;
e4f62546 1818 drm_for_each_crtc(crtc, dev)
f453ba04
DA		 1819 crtc_count++;
1820
9a9f5ce8 1821 drm_for_each_connector(connector, dev)
f453ba04
DA		 1822 connector_count++;
1823
e4f62546 1824 drm_for_each_encoder(encoder, dev)
f453ba04
DA		 1825 encoder_count++;
1826 } else {
1827
09f308f7 1828 mode_group = &file_priv->master->minor->mode_group;
f453ba04
DA		 1829 crtc_count = mode_group->num_crtcs;
1830 connector_count = mode_group->num_connectors;
1831 encoder_count = mode_group->num_encoders;
1832 }
1833
1834 card_res->max_height = dev->mode_config.max_height;
1835 card_res->min_height = dev->mode_config.min_height;
1836 card_res->max_width = dev->mode_config.max_width;
1837 card_res->min_width = dev->mode_config.min_width;
1838
f453ba04
DA		 1839 /* CRTCs */
1840 if (card_res->count_crtcs >= crtc_count) {
1841 copied = 0;
1842 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
09f308f7 1843 if (!mode_group) {
6295d607 1844 drm_for_each_crtc(crtc, dev) {
9440106b 1845 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1846 if (put_user(crtc->base.id, crtc_id + copied)) {
1847 ret = -EFAULT;
1848 goto out;
1849 }
1850 copied++;
1851 }
1852 } else {
1853 for (i = 0; i < mode_group->num_crtcs; i++) {
1854 if (put_user(mode_group->id_list[i],
1855 crtc_id + copied)) {
1856 ret = -EFAULT;
1857 goto out;
1858 }
1859 copied++;
1860 }
1861 }
1862 }
1863 card_res->count_crtcs = crtc_count;
1864
1865 /* Encoders */
1866 if (card_res->count_encoders >= encoder_count) {
1867 copied = 0;
1868 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
09f308f7 1869 if (!mode_group) {
6295d607 1870 drm_for_each_encoder(encoder, dev) {
9440106b 1871 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
83a8cfd3 1872 encoder->name);
f453ba04
DA		 1873 if (put_user(encoder->base.id, encoder_id +
1874 copied)) {
1875 ret = -EFAULT;
1876 goto out;
1877 }
1878 copied++;
1879 }
1880 } else {
1881 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1882 if (put_user(mode_group->id_list[i],
1883 encoder_id + copied)) {
1884 ret = -EFAULT;
1885 goto out;
1886 }
1887 copied++;
1888 }
1889
1890 }
1891 }
1892 card_res->count_encoders = encoder_count;
1893
1894 /* Connectors */
1895 if (card_res->count_connectors >= connector_count) {
1896 copied = 0;
1897 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
09f308f7 1898 if (!mode_group) {
6295d607 1899 drm_for_each_connector(connector, dev) {
9440106b
JG		 1900 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1901 connector->base.id,
25933820 1902 connector->name);
f453ba04
DA		 1903 if (put_user(connector->base.id,
1904 connector_id + copied)) {
1905 ret = -EFAULT;
1906 goto out;
1907 }
1908 copied++;
1909 }
1910 } else {
1911 int start = mode_group->num_crtcs +
1912 mode_group->num_encoders;
1913 for (i = start; i < start + mode_group->num_connectors; i++) {
1914 if (put_user(mode_group->id_list[i],
1915 connector_id + copied)) {
1916 ret = -EFAULT;
1917 goto out;
1918 }
1919 copied++;
1920 }
1921 }
1922 }
1923 card_res->count_connectors = connector_count;
1924
9440106b 1925 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1926 card_res->count_connectors, card_res->count_encoders);
1927
1928out:
fcf93f69 1929 mutex_unlock(&dev->mode_config.mutex);
f453ba04
DA		 1930 return ret;
1931}
1932
1933/**
1934 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1935 * @dev: drm device for the ioctl
1936 * @data: data pointer for the ioctl
1937 * @file_priv: drm file for the ioctl call
f453ba04 1938 *
f453ba04
DA		 1939 * Construct a CRTC configuration structure to return to the user.
1940 *
1941 * Called by the user via ioctl.
1942 *
c8e32cc1 1943 * Returns:
1a498633 1944 * Zero on success, negative errno on failure.
f453ba04
DA		 1945 */
1946int drm_mode_getcrtc(struct drm_device *dev,
1947 void *data, struct drm_file *file_priv)
1948{
1949 struct drm_mode_crtc *crtc_resp = data;
1950 struct drm_crtc *crtc;
f453ba04 1951
fb3b06c8
DA		 1952 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1953 return -EINVAL;
1954
a2b34e22 1955 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
fcf93f69
DV		 1956 if (!crtc)
1957 return -ENOENT;
f453ba04 1958
fcf93f69 1959 drm_modeset_lock_crtc(crtc, crtc->primary);
f453ba04 1960 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 1961 if (crtc->primary->fb)
1962 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 1963 else
1964 crtc_resp->fb_id = 0;
1965
31c946e8
DV		 1966 if (crtc->state) {
1967 crtc_resp->x = crtc->primary->state->src_x >> 16;
1968 crtc_resp->y = crtc->primary->state->src_y >> 16;
1969 if (crtc->state->enable) {
934a8a89 1970 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
31c946e8 1971 crtc_resp->mode_valid = 1;
f453ba04 1972
31c946e8
DV		 1973 } else {
1974 crtc_resp->mode_valid = 0;
1975 }
f453ba04 1976 } else {
31c946e8
DV		 1977 crtc_resp->x = crtc->x;
1978 crtc_resp->y = crtc->y;
1979 if (crtc->enabled) {
934a8a89 1980 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
31c946e8
DV		 1981 crtc_resp->mode_valid = 1;
1982
1983 } else {
1984 crtc_resp->mode_valid = 0;
1985 }
f453ba04 1986 }
fcf93f69 1987 drm_modeset_unlock_crtc(crtc);
f453ba04 1988
baf698b0 1989 return 0;
f453ba04
DA		 1990}
1991
61d8e328
DL		 1992static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1993 const struct drm_file *file_priv)
1994{
1995 /*
1996 * If user-space hasn't configured the driver to expose the stereo 3D
1997 * modes, don't expose them.
1998 */
1999 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2000 return false;
2001
2002 return true;
2003}
2004
abd69c55
DV		 2005static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2006{
2007 /* For atomic drivers only state objects are synchronously updated and
2008 * protected by modeset locks, so check those first. */
2009 if (connector->state)
2010 return connector->state->best_encoder;
2011 return connector->encoder;
2012}
2013
95cbf110 2014/* helper for getconnector and getproperties ioctls */
88a48e29 2015static int get_properties(struct drm_mode_object *obj, bool atomic,
95cbf110
RC		 2016 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2017 uint32_t *arg_count_props)
2018{
88a48e29
RC		 2019 int props_count;
2020 int i, ret, copied;
2021
2022 props_count = obj->properties->count;
2023 if (!atomic)
2024 props_count -= obj->properties->atomic_count;
95cbf110
RC		 2025
2026 if ((*arg_count_props >= props_count) && props_count) {
88a48e29 2027 for (i = 0, copied = 0; copied < props_count; i++) {
95cbf110
RC		 2028 struct drm_property *prop = obj->properties->properties[i];
2029 uint64_t val;
2030
88a48e29
RC		 2031 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2032 continue;
2033
95cbf110
RC		 2034 ret = drm_object_property_get_value(obj, prop, &val);
2035 if (ret)
2036 return ret;
2037
2038 if (put_user(prop->base.id, prop_ptr + copied))
2039 return -EFAULT;
2040
2041 if (put_user(val, prop_values + copied))
2042 return -EFAULT;
2043
2044 copied++;
2045 }
2046 }
2047 *arg_count_props = props_count;
2048
2049 return 0;
2050}
2051
f453ba04
DA		 2052/**
2053 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 2054 * @dev: drm device for the ioctl
2055 * @data: data pointer for the ioctl
2056 * @file_priv: drm file for the ioctl call
f453ba04 2057 *
f453ba04
DA		 2058 * Construct a connector configuration structure to return to the user.
2059 *
2060 * Called by the user via ioctl.
2061 *
c8e32cc1 2062 * Returns:
1a498633 2063 * Zero on success, negative errno on failure.
f453ba04
DA		 2064 */
2065int drm_mode_getconnector(struct drm_device *dev, void *data,
2066 struct drm_file *file_priv)
2067{
2068 struct drm_mode_get_connector *out_resp = data;
f453ba04 2069 struct drm_connector *connector;
abd69c55 2070 struct drm_encoder *encoder;
f453ba04
DA		 2071 struct drm_display_mode *mode;
2072 int mode_count = 0;
f453ba04
DA		 2073 int encoders_count = 0;
2074 int ret = 0;
2075 int copied = 0;
2076 int i;
2077 struct drm_mode_modeinfo u_mode;
2078 struct drm_mode_modeinfo __user *mode_ptr;
f453ba04
DA		 2079 uint32_t __user *encoder_ptr;
2080
fb3b06c8
DA		 2081 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2082 return -EINVAL;
2083
f453ba04
DA		 2084 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2085
9440106b 2086 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 2087
7b24056b 2088 mutex_lock(&dev->mode_config.mutex);
f453ba04 2089
a2b34e22
RC		 2090 connector = drm_connector_find(dev, out_resp->connector_id);
2091 if (!connector) {
f27657f2 2092 ret = -ENOENT;
04bdf441 2093 goto out_unlock;
f453ba04 2094 }
f453ba04 2095
01073b08
TR		 2096 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2097 if (connector->encoder_ids[i] != 0)
f453ba04 2098 encoders_count++;
f453ba04
DA		 2099
2100 if (out_resp->count_modes == 0) {
2101 connector->funcs->fill_modes(connector,
2102 dev->mode_config.max_width,
2103 dev->mode_config.max_height);
2104 }
2105
2106 /* delayed so we get modes regardless of pre-fill_modes state */
2107 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 2108 if (drm_mode_expose_to_userspace(mode, file_priv))
2109 mode_count++;
f453ba04
DA		 2110
2111 out_resp->connector_id = connector->base.id;
2112 out_resp->connector_type = connector->connector_type;
2113 out_resp->connector_type_id = connector->connector_type_id;
2114 out_resp->mm_width = connector->display_info.width_mm;
2115 out_resp->mm_height = connector->display_info.height_mm;
2116 out_resp->subpixel = connector->display_info.subpixel_order;
2117 out_resp->connection = connector->status;
2caa80e7
DV		 2118
2119 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2120 encoder = drm_connector_get_encoder(connector);
2121 if (encoder)
2122 out_resp->encoder_id = encoder->base.id;
f453ba04
DA		 2123 else
2124 out_resp->encoder_id = 0;
2125
2126 /*
2127 * This ioctl is called twice, once to determine how much space is
2128 * needed, and the 2nd time to fill it.
2129 */
2130 if ((out_resp->count_modes >= mode_count) && mode_count) {
2131 copied = 0;
81f6c7f8 2132 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 2133 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 2134 if (!drm_mode_expose_to_userspace(mode, file_priv))
2135 continue;
2136
934a8a89 2137 drm_mode_convert_to_umode(&u_mode, mode);
f453ba04
DA		 2138 if (copy_to_user(mode_ptr + copied,
2139 &u_mode, sizeof(u_mode))) {
2140 ret = -EFAULT;
2141 goto out;
2142 }
2143 copied++;
2144 }
2145 }
2146 out_resp->count_modes = mode_count;
2147
88a48e29 2148 ret = get_properties(&connector->base, file_priv->atomic,
95cbf110
RC		 2149 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2150 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2151 &out_resp->count_props);
2152 if (ret)
2153 goto out;
f453ba04
DA		 2154
2155 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2156 copied = 0;
81f6c7f8 2157 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 2158 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2159 if (connector->encoder_ids[i] != 0) {
2160 if (put_user(connector->encoder_ids[i],
2161 encoder_ptr + copied)) {
2162 ret = -EFAULT;
2163 goto out;
2164 }
2165 copied++;
2166 }
2167 }
2168 }
2169 out_resp->count_encoders = encoders_count;
2170
2171out:
ccfc0865 2172 drm_modeset_unlock(&dev->mode_config.connection_mutex);
04bdf441
TR		 2173
2174out_unlock:
7b24056b
DV		 2175 mutex_unlock(&dev->mode_config.mutex);
2176
f453ba04
DA		 2177 return ret;
2178}
2179
abd69c55
DV		 2180static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2181{
2182 struct drm_connector *connector;
2183 struct drm_device *dev = encoder->dev;
2184 bool uses_atomic = false;
2185
2186 /* For atomic drivers only state objects are synchronously updated and
2187 * protected by modeset locks, so check those first. */
6295d607 2188 drm_for_each_connector(connector, dev) {
abd69c55
DV		 2189 if (!connector->state)
2190 continue;
2191
2192 uses_atomic = true;
2193
2194 if (connector->state->best_encoder != encoder)
2195 continue;
2196
2197 return connector->state->crtc;
2198 }
2199
2200 /* Don't return stale data (e.g. pending async disable). */
2201 if (uses_atomic)
2202 return NULL;
2203
2204 return encoder->crtc;
2205}
2206
c8e32cc1
DV		 2207/**
2208 * drm_mode_getencoder - get encoder configuration
2209 * @dev: drm device for the ioctl
2210 * @data: data pointer for the ioctl
2211 * @file_priv: drm file for the ioctl call
2212 *
2213 * Construct a encoder configuration structure to return to the user.
2214 *
2215 * Called by the user via ioctl.
2216 *
2217 * Returns:
1a498633 2218 * Zero on success, negative errno on failure.
c8e32cc1 2219 */
f453ba04
DA		 2220int drm_mode_getencoder(struct drm_device *dev, void *data,
2221 struct drm_file *file_priv)
2222{
2223 struct drm_mode_get_encoder *enc_resp = data;
f453ba04 2224 struct drm_encoder *encoder;
abd69c55 2225 struct drm_crtc *crtc;
f453ba04 2226
fb3b06c8
DA		 2227 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2228 return -EINVAL;
2229
a2b34e22 2230 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
fcf93f69
DV		 2231 if (!encoder)
2232 return -ENOENT;
f453ba04 2233
fcf93f69 2234 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2235 crtc = drm_encoder_get_crtc(encoder);
2236 if (crtc)
2237 enc_resp->crtc_id = crtc->base.id;
f453ba04
DA		 2238 else
2239 enc_resp->crtc_id = 0;
fcf93f69
DV		 2240 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2241
f453ba04
DA		 2242 enc_resp->encoder_type = encoder->encoder_type;
2243 enc_resp->encoder_id = encoder->base.id;
2244 enc_resp->possible_crtcs = encoder->possible_crtcs;
2245 enc_resp->possible_clones = encoder->possible_clones;
2246
baf698b0 2247 return 0;
f453ba04
DA		 2248}
2249
8cf5c917 2250/**
c8e32cc1 2251 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 2252 * @dev: DRM device
2253 * @data: ioctl data
2254 * @file_priv: DRM file info
2255 *
c8e32cc1
DV		 2256 * Construct a list of plane ids to return to the user.
2257 *
2258 * Called by the user via ioctl.
2259 *
2260 * Returns:
1a498633 2261 * Zero on success, negative errno on failure.
8cf5c917
JB		 2262 */
2263int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 2264 struct drm_file *file_priv)
8cf5c917
JB		 2265{
2266 struct drm_mode_get_plane_res *plane_resp = data;
2267 struct drm_mode_config *config;
2268 struct drm_plane *plane;
2269 uint32_t __user *plane_ptr;
fcf93f69 2270 int copied = 0;
681e7ec7 2271 unsigned num_planes;
8cf5c917
JB		 2272
2273 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2274 return -EINVAL;
2275
8cf5c917
JB		 2276 config = &dev->mode_config;
2277
681e7ec7
MR		 2278 if (file_priv->universal_planes)
2279 num_planes = config->num_total_plane;
2280 else
2281 num_planes = config->num_overlay_plane;
2282
8cf5c917
JB		 2283 /*
2284 * This ioctl is called twice, once to determine how much space is
2285 * needed, and the 2nd time to fill it.
2286 */
681e7ec7
MR		 2287 if (num_planes &&
2288 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 2289 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917 2290
fcf93f69 2291 /* Plane lists are invariant, no locking needed. */
e4f62546 2292 drm_for_each_plane(plane, dev) {
681e7ec7
MR		 2293 /*
2294 * Unless userspace set the 'universal planes'
2295 * capability bit, only advertise overlays.
2296 */
2297 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2298 !file_priv->universal_planes)
e27dde3e
MR		 2299 continue;
2300
fcf93f69
DV		 2301 if (put_user(plane->base.id, plane_ptr + copied))
2302 return -EFAULT;
8cf5c917
JB		 2303 copied++;
2304 }
2305 }
681e7ec7 2306 plane_resp->count_planes = num_planes;
8cf5c917 2307
fcf93f69 2308 return 0;
8cf5c917
JB		 2309}
2310
2311/**
c8e32cc1 2312 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2313 * @dev: DRM device
2314 * @data: ioctl data
2315 * @file_priv: DRM file info
2316 *
c8e32cc1
DV		 2317 * Construct a plane configuration structure to return to the user.
2318 *
2319 * Called by the user via ioctl.
2320 *
2321 * Returns:
1a498633 2322 * Zero on success, negative errno on failure.
8cf5c917
JB		 2323 */
2324int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2325 struct drm_file *file_priv)
8cf5c917
JB		 2326{
2327 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2328 struct drm_plane *plane;
2329 uint32_t __user *format_ptr;
8cf5c917
JB		 2330
2331 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2332 return -EINVAL;
2333
a2b34e22 2334 plane = drm_plane_find(dev, plane_resp->plane_id);
fcf93f69
DV		 2335 if (!plane)
2336 return -ENOENT;
8cf5c917 2337
fcf93f69 2338 drm_modeset_lock(&plane->mutex, NULL);
8cf5c917
JB		 2339 if (plane->crtc)
2340 plane_resp->crtc_id = plane->crtc->base.id;
2341 else
2342 plane_resp->crtc_id = 0;
2343
2344 if (plane->fb)
2345 plane_resp->fb_id = plane->fb->base.id;
2346 else
2347 plane_resp->fb_id = 0;
fcf93f69 2348 drm_modeset_unlock(&plane->mutex);
8cf5c917
JB		 2349
2350 plane_resp->plane_id = plane->base.id;
2351 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2352 plane_resp->gamma_size = 0;
8cf5c917
JB		 2353
2354 /*
2355 * This ioctl is called twice, once to determine how much space is
2356 * needed, and the 2nd time to fill it.
2357 */
2358 if (plane->format_count &&
2359 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2360 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2361 if (copy_to_user(format_ptr,
2362 plane->format_types,
2363 sizeof(uint32_t) * plane->format_count)) {
fcf93f69 2364 return -EFAULT;
8cf5c917
JB		 2365 }
2366 }
2367 plane_resp->count_format_types = plane->format_count;
2368
baf698b0 2369 return 0;
8cf5c917
JB		 2370}
2371
ead8610d
LP		 2372/**
2373 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2374 * @plane: plane to check for format support
2375 * @format: the pixel format
2376 *
2377 * Returns:
2378 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2379 * otherwise.
2380 */
2381int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2382{
2383 unsigned int i;
2384
2385 for (i = 0; i < plane->format_count; i++) {
2386 if (format == plane->format_types[i])
2387 return 0;
2388 }
2389
2390 return -EINVAL;
2391}
2392
b36552b3
MR		 2393/*
2394 * setplane_internal - setplane handler for internal callers
8cf5c917 2395 *
b36552b3
MR		 2396 * Note that we assume an extra reference has already been taken on fb. If the
2397 * update fails, this reference will be dropped before return; if it succeeds,
2398 * the previous framebuffer (if any) will be unreferenced instead.
c8e32cc1 2399 *
b36552b3 2400 * src_{x,y,w,h} are provided in 16.16 fixed point format
8cf5c917 2401 */
f2b50c11
DV		 2402static int __setplane_internal(struct drm_plane *plane,
2403 struct drm_crtc *crtc,
2404 struct drm_framebuffer *fb,
2405 int32_t crtc_x, int32_t crtc_y,
2406 uint32_t crtc_w, uint32_t crtc_h,
2407 /* src_{x,y,w,h} values are 16.16 fixed point */
2408 uint32_t src_x, uint32_t src_y,
2409 uint32_t src_w, uint32_t src_h)
8cf5c917 2410{
8cf5c917 2411 int ret = 0;
42ef8789 2412 unsigned int fb_width, fb_height;
8cf5c917 2413
8cf5c917 2414 /* No fb means shut it down */
b36552b3 2415 if (!fb) {
3d30a59b 2416 plane->old_fb = plane->fb;
731cce48
DV		 2417 ret = plane->funcs->disable_plane(plane);
2418 if (!ret) {
2419 plane->crtc = NULL;
2420 plane->fb = NULL;
2421 } else {
3d30a59b 2422 plane->old_fb = NULL;
731cce48 2423 }
8cf5c917
JB		 2424 goto out;
2425 }
2426
7f994f3f
MR		 2427 /* Check whether this plane is usable on this CRTC */
2428 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2429 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2430 ret = -EINVAL;
2431 goto out;
2432 }
2433
62443be6 2434 /* Check whether this plane supports the fb pixel format. */
ead8610d
LP		 2435 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2436 if (ret) {
6ba6d03e
VS		 2437 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2438 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2439 goto out;
2440 }
2441
3968be94
MR		 2442 /* Give drivers some help against integer overflows */
2443 if (crtc_w > INT_MAX ||
2444 crtc_x > INT_MAX - (int32_t) crtc_w ||
2445 crtc_h > INT_MAX ||
2446 crtc_y > INT_MAX - (int32_t) crtc_h) {
2447 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2448 crtc_w, crtc_h, crtc_x, crtc_y);
2449 return -ERANGE;
2450 }
2451
2452
42ef8789
VS		 2453 fb_width = fb->width << 16;
2454 fb_height = fb->height << 16;
2455
2456 /* Make sure source coordinates are inside the fb. */
b36552b3
MR		 2457 if (src_w > fb_width ||
2458 src_x > fb_width - src_w ||
2459 src_h > fb_height ||
2460 src_y > fb_height - src_h) {
42ef8789
VS		 2461 DRM_DEBUG_KMS("Invalid source coordinates "
2462 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
b36552b3
MR		 2463 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2464 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2465 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2466 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
42ef8789
VS		 2467 ret = -ENOSPC;
2468 goto out;
2469 }
2470
3d30a59b 2471 plane->old_fb = plane->fb;
8cf5c917 2472 ret = plane->funcs->update_plane(plane, crtc, fb,
b36552b3
MR		 2473 crtc_x, crtc_y, crtc_w, crtc_h,
2474 src_x, src_y, src_w, src_h);
8cf5c917
JB		 2475 if (!ret) {
2476 plane->crtc = crtc;
2477 plane->fb = fb;
35f8badc 2478 fb = NULL;
0fe27f06 2479 } else {
3d30a59b 2480 plane->old_fb = NULL;
8cf5c917
JB		 2481 }
2482
2483out:
6c2a7532
DV		 2484 if (fb)
2485 drm_framebuffer_unreference(fb);
3d30a59b
DV		 2486 if (plane->old_fb)
2487 drm_framebuffer_unreference(plane->old_fb);
2488 plane->old_fb = NULL;
8cf5c917
JB		 2489
2490 return ret;
f2b50c11 2491}
b36552b3 2492
f2b50c11
DV		 2493static int setplane_internal(struct drm_plane *plane,
2494 struct drm_crtc *crtc,
2495 struct drm_framebuffer *fb,
2496 int32_t crtc_x, int32_t crtc_y,
2497 uint32_t crtc_w, uint32_t crtc_h,
2498 /* src_{x,y,w,h} values are 16.16 fixed point */
2499 uint32_t src_x, uint32_t src_y,
2500 uint32_t src_w, uint32_t src_h)
2501{
2502 int ret;
2503
2504 drm_modeset_lock_all(plane->dev);
2505 ret = __setplane_internal(plane, crtc, fb,
2506 crtc_x, crtc_y, crtc_w, crtc_h,
2507 src_x, src_y, src_w, src_h);
2508 drm_modeset_unlock_all(plane->dev);
2509
2510 return ret;
b36552b3
MR		 2511}
2512
2513/**
2514 * drm_mode_setplane - configure a plane's configuration
2515 * @dev: DRM device
2516 * @data: ioctl data*
2517 * @file_priv: DRM file info
2518 *
2519 * Set plane configuration, including placement, fb, scaling, and other factors.
2520 * Or pass a NULL fb to disable (planes may be disabled without providing a
2521 * valid crtc).
2522 *
2523 * Returns:
1a498633 2524 * Zero on success, negative errno on failure.
b36552b3
MR		 2525 */
2526int drm_mode_setplane(struct drm_device *dev, void *data,
2527 struct drm_file *file_priv)
2528{
2529 struct drm_mode_set_plane *plane_req = data;
b36552b3
MR		 2530 struct drm_plane *plane;
2531 struct drm_crtc *crtc = NULL;
2532 struct drm_framebuffer *fb = NULL;
2533
2534 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2535 return -EINVAL;
2536
b36552b3
MR		 2537 /*
2538 * First, find the plane, crtc, and fb objects. If not available,
2539 * we don't bother to call the driver.
2540 */
933f622f
RC		 2541 plane = drm_plane_find(dev, plane_req->plane_id);
2542 if (!plane) {
b36552b3
MR		 2543 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2544 plane_req->plane_id);
2545 return -ENOENT;
2546 }
b36552b3
MR		 2547
2548 if (plane_req->fb_id) {
2549 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2550 if (!fb) {
2551 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2552 plane_req->fb_id);
2553 return -ENOENT;
2554 }
2555
933f622f
RC		 2556 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2557 if (!crtc) {
b36552b3
MR		 2558 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2559 plane_req->crtc_id);
2560 return -ENOENT;
2561 }
b36552b3
MR		 2562 }
2563
161d0dc1
MR		 2564 /*
2565 * setplane_internal will take care of deref'ing either the old or new
2566 * framebuffer depending on success.
2567 */
17cfd91f 2568 return setplane_internal(plane, crtc, fb,
b36552b3
MR		 2569 plane_req->crtc_x, plane_req->crtc_y,
2570 plane_req->crtc_w, plane_req->crtc_h,
2571 plane_req->src_x, plane_req->src_y,
2572 plane_req->src_w, plane_req->src_h);
8cf5c917
JB		 2573}
2574
2d13b679
DV		 2575/**
2576 * drm_mode_set_config_internal - helper to call ->set_config
2577 * @set: modeset config to set
2578 *
2579 * This is a little helper to wrap internal calls to the ->set_config driver
2580 * interface. The only thing it adds is correct refcounting dance.
4dfd909f 2581 *
c8e32cc1 2582 * Returns:
1a498633 2583 * Zero on success, negative errno on failure.
2d13b679
DV		 2584 */
2585int drm_mode_set_config_internal(struct drm_mode_set *set)
2586{
2587 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2588 struct drm_framebuffer *fb;
2589 struct drm_crtc *tmp;
b0d12325
DV		 2590 int ret;
2591
5cef29aa
DV		 2592 /*
2593 * NOTE: ->set_config can also disable other crtcs (if we steal all
2594 * connectors from it), hence we need to refcount the fbs across all
2595 * crtcs. Atomic modeset will have saner semantics ...
2596 */
e4f62546 2597 drm_for_each_crtc(tmp, crtc->dev)
3d30a59b 2598 tmp->primary->old_fb = tmp->primary->fb;
5cef29aa 2599
b0d12325 2600 fb = set->fb;
2d13b679 2601
b0d12325
DV		 2602 ret = crtc->funcs->set_config(set);
2603 if (ret == 0) {
e13161af 2604 crtc->primary->crtc = crtc;
0fe27f06 2605 crtc->primary->fb = fb;
5cef29aa 2606 }
cc85e121 2607
e4f62546 2608 drm_for_each_crtc(tmp, crtc->dev) {
f4510a27
MR		 2609 if (tmp->primary->fb)
2610 drm_framebuffer_reference(tmp->primary->fb);
3d30a59b
DV		 2611 if (tmp->primary->old_fb)
2612 drm_framebuffer_unreference(tmp->primary->old_fb);
2613 tmp->primary->old_fb = NULL;
b0d12325
DV		 2614 }
2615
2616 return ret;
2d13b679
DV		 2617}
2618EXPORT_SYMBOL(drm_mode_set_config_internal);
2619
ecb7e16b
GP		 2620/**
2621 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2622 * @mode: mode to query
2623 * @hdisplay: hdisplay value to fill in
2624 * @vdisplay: vdisplay value to fill in
2625 *
2626 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2627 * the appropriate layout.
2628 */
2629void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2630 int *hdisplay, int *vdisplay)
2631{
2632 struct drm_display_mode adjusted;
2633
2634 drm_mode_copy(&adjusted, mode);
2635 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2636 *hdisplay = adjusted.crtc_hdisplay;
2637 *vdisplay = adjusted.crtc_vdisplay;
2638}
2639EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2640
af93629d
MR		 2641/**
2642 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2643 * CRTC viewport
2644 * @crtc: CRTC that framebuffer will be displayed on
2645 * @x: x panning
2646 * @y: y panning
2647 * @mode: mode that framebuffer will be displayed under
2648 * @fb: framebuffer to check size of
c11e9283 2649 */
af93629d
MR		 2650int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2651 int x, int y,
2652 const struct drm_display_mode *mode,
2653 const struct drm_framebuffer *fb)
c11e9283
DL		 2654
2655{
2656 int hdisplay, vdisplay;
2657
ecb7e16b 2658 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
a0c1bbb0 2659
c11e9283
DL		 2660 if (crtc->invert_dimensions)
2661 swap(hdisplay, vdisplay);
2662
2663 if (hdisplay > fb->width ||
2664 vdisplay > fb->height ||
2665 x > fb->width - hdisplay ||
2666 y > fb->height - vdisplay) {
2667 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2668 fb->width, fb->height, hdisplay, vdisplay, x, y,
2669 crtc->invert_dimensions ? " (inverted)" : "");
2670 return -ENOSPC;
2671 }
2672
2673 return 0;
2674}
af93629d 2675EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2676
f453ba04
DA		 2677/**
2678 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2679 * @dev: drm device for the ioctl
2680 * @data: data pointer for the ioctl
2681 * @file_priv: drm file for the ioctl call
f453ba04 2682 *
f453ba04
DA		 2683 * Build a new CRTC configuration based on user request.
2684 *
2685 * Called by the user via ioctl.
2686 *
c8e32cc1 2687 * Returns:
1a498633 2688 * Zero on success, negative errno on failure.
f453ba04
DA		 2689 */
2690int drm_mode_setcrtc(struct drm_device *dev, void *data,
2691 struct drm_file *file_priv)
2692{
2693 struct drm_mode_config *config = &dev->mode_config;
2694 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2695 struct drm_crtc *crtc;
f453ba04
DA		 2696 struct drm_connector **connector_set = NULL, *connector;
2697 struct drm_framebuffer *fb = NULL;
2698 struct drm_display_mode *mode = NULL;
2699 struct drm_mode_set set;
2700 uint32_t __user *set_connectors_ptr;
4a1b0714 2701 int ret;
f453ba04
DA		 2702 int i;
2703
fb3b06c8
DA		 2704 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2705 return -EINVAL;
2706
1d97e915
VS		 2707 /* For some reason crtc x/y offsets are signed internally. */
2708 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2709 return -ERANGE;
2710
84849903 2711 drm_modeset_lock_all(dev);
a2b34e22
RC		 2712 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2713 if (!crtc) {
58367ed6 2714 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2715 ret = -ENOENT;
f453ba04
DA		 2716 goto out;
2717 }
9440106b 2718 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 2719
2720 if (crtc_req->mode_valid) {
2721 /* If we have a mode we need a framebuffer. */
2722 /* If we pass -1, set the mode with the currently bound fb */
2723 if (crtc_req->fb_id == -1) {
f4510a27 2724 if (!crtc->primary->fb) {
6653cc8d
VS		 2725 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2726 ret = -EINVAL;
2727 goto out;
f453ba04 2728 }
f4510a27 2729 fb = crtc->primary->fb;
b0d12325
DV		 2730 /* Make refcounting symmetric with the lookup path. */
2731 drm_framebuffer_reference(fb);
f453ba04 2732 } else {
786b99ed
DV		 2733 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2734 if (!fb) {
58367ed6
ZY		 2735 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2736 crtc_req->fb_id);
37c4e705 2737 ret = -ENOENT;
f453ba04
DA		 2738 goto out;
2739 }
f453ba04
DA		 2740 }
2741
2742 mode = drm_mode_create(dev);
ee34ab5b
VS		 2743 if (!mode) {
2744 ret = -ENOMEM;
2745 goto out;
2746 }
2747
934a8a89 2748 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
90367bf6
VS		 2749 if (ret) {
2750 DRM_DEBUG_KMS("Invalid mode\n");
2751 goto out;
2752 }
2753
f453ba04 2754 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2755
7eb5f302
LP		 2756 /*
2757 * Check whether the primary plane supports the fb pixel format.
2758 * Drivers not implementing the universal planes API use a
2759 * default formats list provided by the DRM core which doesn't
2760 * match real hardware capabilities. Skip the check in that
2761 * case.
2762 */
2763 if (!crtc->primary->format_default) {
2764 ret = drm_plane_check_pixel_format(crtc->primary,
2765 fb->pixel_format);
2766 if (ret) {
2767 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2768 drm_get_format_name(fb->pixel_format));
2769 goto out;
2770 }
2771 }
2772
c11e9283
DL		 2773 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2774 mode, fb);
2775 if (ret)
5f61bb42 2776 goto out;
c11e9283 2777
f453ba04
DA		 2778 }
2779
2780 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2781 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2782 ret = -EINVAL;
2783 goto out;
2784 }
2785
7781de74 2786 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2787 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2788 crtc_req->count_connectors);
2789 ret = -EINVAL;
2790 goto out;
2791 }
2792
2793 if (crtc_req->count_connectors > 0) {
2794 u32 out_id;
2795
2796 /* Avoid unbounded kernel memory allocation */
2797 if (crtc_req->count_connectors > config->num_connector) {
2798 ret = -EINVAL;
2799 goto out;
2800 }
2801
2f6c5389
TR		 2802 connector_set = kmalloc_array(crtc_req->count_connectors,
2803 sizeof(struct drm_connector *),
2804 GFP_KERNEL);
f453ba04
DA		 2805 if (!connector_set) {
2806 ret = -ENOMEM;
2807 goto out;
2808 }
2809
2810 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2811 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2812 if (get_user(out_id, &set_connectors_ptr[i])) {
2813 ret = -EFAULT;
2814 goto out;
2815 }
2816
a2b34e22
RC		 2817 connector = drm_connector_find(dev, out_id);
2818 if (!connector) {
58367ed6
ZY		 2819 DRM_DEBUG_KMS("Connector id %d unknown\n",
2820 out_id);
f27657f2 2821 ret = -ENOENT;
f453ba04
DA		 2822 goto out;
2823 }
9440106b
JG		 2824 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2825 connector->base.id,
25933820 2826 connector->name);
f453ba04
DA		 2827
2828 connector_set[i] = connector;
2829 }
2830 }
2831
2832 set.crtc = crtc;
2833 set.x = crtc_req->x;
2834 set.y = crtc_req->y;
2835 set.mode = mode;
2836 set.connectors = connector_set;
2837 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2838 set.fb = fb;
2d13b679 2839 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2840
2841out:
b0d12325
DV		 2842 if (fb)
2843 drm_framebuffer_unreference(fb);
2844
f453ba04 2845 kfree(connector_set);
ee34ab5b 2846 drm_mode_destroy(dev, mode);
84849903 2847 drm_modeset_unlock_all(dev);
f453ba04
DA		 2848 return ret;
2849}
2850
161d0dc1
MR		 2851/**
2852 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2853 * universal plane handler call
2854 * @crtc: crtc to update cursor for
2855 * @req: data pointer for the ioctl
2856 * @file_priv: drm file for the ioctl call
2857 *
2858 * Legacy cursor ioctl's work directly with driver buffer handles. To
2859 * translate legacy ioctl calls into universal plane handler calls, we need to
2860 * wrap the native buffer handle in a drm_framebuffer.
2861 *
2862 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2863 * buffer with a pitch of 4*width; the universal plane interface should be used
2864 * directly in cases where the hardware can support other buffer settings and
2865 * userspace wants to make use of these capabilities.
2866 *
2867 * Returns:
1a498633 2868 * Zero on success, negative errno on failure.
161d0dc1
MR		 2869 */
2870static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2871 struct drm_mode_cursor2 *req,
2872 struct drm_file *file_priv)
2873{
2874 struct drm_device *dev = crtc->dev;
2875 struct drm_framebuffer *fb = NULL;
2876 struct drm_mode_fb_cmd2 fbreq = {
2877 .width = req->width,
2878 .height = req->height,
2879 .pixel_format = DRM_FORMAT_ARGB8888,
2880 .pitches = { req->width * 4 },
2881 .handles = { req->handle },
2882 };
2883 int32_t crtc_x, crtc_y;
2884 uint32_t crtc_w = 0, crtc_h = 0;
2885 uint32_t src_w = 0, src_h = 0;
2886 int ret = 0;
2887
2888 BUG_ON(!crtc->cursor);
f2b50c11 2889 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
161d0dc1
MR		 2890
2891 /*
2892 * Obtain fb we'll be using (either new or existing) and take an extra
2893 * reference to it if fb != null. setplane will take care of dropping
2894 * the reference if the plane update fails.
2895 */
2896 if (req->flags & DRM_MODE_CURSOR_BO) {
2897 if (req->handle) {
9a6f5130 2898 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
161d0dc1
MR		 2899 if (IS_ERR(fb)) {
2900 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2901 return PTR_ERR(fb);
2902 }
161d0dc1
MR		 2903 } else {
2904 fb = NULL;
2905 }
2906 } else {
161d0dc1
MR		 2907 fb = crtc->cursor->fb;
2908 if (fb)
2909 drm_framebuffer_reference(fb);
161d0dc1
MR		 2910 }
2911
2912 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2913 crtc_x = req->x;
2914 crtc_y = req->y;
2915 } else {
2916 crtc_x = crtc->cursor_x;
2917 crtc_y = crtc->cursor_y;
2918 }
2919
2920 if (fb) {
2921 crtc_w = fb->width;
2922 crtc_h = fb->height;
2923 src_w = fb->width << 16;
2924 src_h = fb->height << 16;
2925 }
2926
2927 /*
2928 * setplane_internal will take care of deref'ing either the old or new
2929 * framebuffer depending on success.
2930 */
f2b50c11 2931 ret = __setplane_internal(crtc->cursor, crtc, fb,
161d0dc1
MR		 2932 crtc_x, crtc_y, crtc_w, crtc_h,
2933 0, 0, src_w, src_h);
2934
2935 /* Update successful; save new cursor position, if necessary */
2936 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2937 crtc->cursor_x = req->x;
2938 crtc->cursor_y = req->y;
2939 }
2940
2941 return ret;
2942}
2943
4c813d4d
DA		 2944static int drm_mode_cursor_common(struct drm_device *dev,
2945 struct drm_mode_cursor2 *req,
2946 struct drm_file *file_priv)
f453ba04 2947{
f453ba04
DA		 2948 struct drm_crtc *crtc;
2949 int ret = 0;
2950
fb3b06c8
DA		 2951 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2952 return -EINVAL;
2953
7c4eaca4 2954 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 2955 return -EINVAL;
f453ba04 2956
a2b34e22
RC		 2957 crtc = drm_crtc_find(dev, req->crtc_id);
2958 if (!crtc) {
58367ed6 2959 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 2960 return -ENOENT;
f453ba04 2961 }
f453ba04 2962
161d0dc1
MR		 2963 /*
2964 * If this crtc has a universal cursor plane, call that plane's update
2965 * handler rather than using legacy cursor handlers.
2966 */
4d02e2de 2967 drm_modeset_lock_crtc(crtc, crtc->cursor);
f2b50c11
DV		 2968 if (crtc->cursor) {
2969 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2970 goto out;
2971 }
2972
f453ba04 2973 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 2974 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 2975 ret = -ENXIO;
2976 goto out;
2977 }
2978 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 2979 if (crtc->funcs->cursor_set2)
2980 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2981 req->width, req->height, req->hot_x, req->hot_y);
2982 else
2983 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2984 req->width, req->height);
f453ba04
DA		 2985 }
2986
2987 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2988 if (crtc->funcs->cursor_move) {
2989 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2990 } else {
f453ba04
DA		 2991 ret = -EFAULT;
2992 goto out;
2993 }
2994 }
2995out:
d059f652 2996 drm_modeset_unlock_crtc(crtc);
dac35663 2997
f453ba04 2998 return ret;
4c813d4d
DA		 2999
3000}
c8e32cc1
DV		 3001
3002
3003/**
3004 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3005 * @dev: drm device for the ioctl
3006 * @data: data pointer for the ioctl
3007 * @file_priv: drm file for the ioctl call
3008 *
3009 * Set the cursor configuration based on user request.
3010 *
3011 * Called by the user via ioctl.
3012 *
3013 * Returns:
1a498633 3014 * Zero on success, negative errno on failure.
c8e32cc1 3015 */
4c813d4d 3016int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 3017 void *data, struct drm_file *file_priv)
4c813d4d
DA		 3018{
3019 struct drm_mode_cursor *req = data;
3020 struct drm_mode_cursor2 new_req;
3021
3022 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3023 new_req.hot_x = new_req.hot_y = 0;
3024
3025 return drm_mode_cursor_common(dev, &new_req, file_priv);
3026}
3027
c8e32cc1
DV		 3028/**
3029 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3030 * @dev: drm device for the ioctl
3031 * @data: data pointer for the ioctl
3032 * @file_priv: drm file for the ioctl call
3033 *
3034 * Set the cursor configuration based on user request. This implements the 2nd
3035 * version of the cursor ioctl, which allows userspace to additionally specify
3036 * the hotspot of the pointer.
3037 *
3038 * Called by the user via ioctl.
3039 *
3040 * Returns:
1a498633 3041 * Zero on success, negative errno on failure.
c8e32cc1 3042 */
4c813d4d
DA		 3043int drm_mode_cursor2_ioctl(struct drm_device *dev,
3044 void *data, struct drm_file *file_priv)
3045{
3046 struct drm_mode_cursor2 *req = data;
4dfd909f 3047
4c813d4d 3048 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 3049}
3050
c8e32cc1
DV		 3051/**
3052 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3053 * @bpp: bits per pixels
3054 * @depth: bit depth per pixel
3055 *
3056 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3057 * Useful in fbdev emulation code, since that deals in those values.
3058 */
308e5bcb
JB		 3059uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3060{
3061 uint32_t fmt;
3062
3063 switch (bpp) {
3064 case 8:
d84f031b 3065 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 3066 break;
3067 case 16:
3068 if (depth == 15)
04b3924d 3069 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 3070 else
04b3924d 3071 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 3072 break;
3073 case 24:
04b3924d 3074 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 3075 break;
3076 case 32:
3077 if (depth == 24)
04b3924d 3078 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 3079 else if (depth == 30)
04b3924d 3080 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 3081 else
04b3924d 3082 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 3083 break;
3084 default:
04b3924d
VS		 3085 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3086 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 3087 break;
3088 }
3089
3090 return fmt;
3091}
3092EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3093
f453ba04
DA		 3094/**
3095 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 3096 * @dev: drm device for the ioctl
3097 * @data: data pointer for the ioctl
3098 * @file_priv: drm file for the ioctl call
f453ba04 3099 *
c8e32cc1 3100 * Add a new FB to the specified CRTC, given a user request. This is the
209f5527 3101 * original addfb ioctl which only supported RGB formats.
f453ba04
DA		 3102 *
3103 * Called by the user via ioctl.
3104 *
c8e32cc1 3105 * Returns:
1a498633 3106 * Zero on success, negative errno on failure.
f453ba04
DA		 3107 */
3108int drm_mode_addfb(struct drm_device *dev,
3109 void *data, struct drm_file *file_priv)
3110{
308e5bcb
JB		 3111 struct drm_mode_fb_cmd *or = data;
3112 struct drm_mode_fb_cmd2 r = {};
228f2cb3 3113 int ret;
308e5bcb 3114
228f2cb3 3115 /* convert to new format and call new ioctl */
308e5bcb
JB		 3116 r.fb_id = or->fb_id;
3117 r.width = or->width;
3118 r.height = or->height;
3119 r.pitches[0] = or->pitch;
3120 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3121 r.handles[0] = or->handle;
3122
228f2cb3
CE		 3123 ret = drm_mode_addfb2(dev, &r, file_priv);
3124 if (ret)
3125 return ret;
308e5bcb 3126
228f2cb3 3127 or->fb_id = r.fb_id;
4b096ac1 3128
baf698b0 3129 return 0;
308e5bcb
JB		 3130}
3131
cff91b62 3132static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 3133{
3134 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3135
3136 switch (format) {
3137 case DRM_FORMAT_C8:
3138 case DRM_FORMAT_RGB332:
3139 case DRM_FORMAT_BGR233:
3140 case DRM_FORMAT_XRGB4444:
3141 case DRM_FORMAT_XBGR4444:
3142 case DRM_FORMAT_RGBX4444:
3143 case DRM_FORMAT_BGRX4444:
3144 case DRM_FORMAT_ARGB4444:
3145 case DRM_FORMAT_ABGR4444:
3146 case DRM_FORMAT_RGBA4444:
3147 case DRM_FORMAT_BGRA4444:
3148 case DRM_FORMAT_XRGB1555:
3149 case DRM_FORMAT_XBGR1555:
3150 case DRM_FORMAT_RGBX5551:
3151 case DRM_FORMAT_BGRX5551:
3152 case DRM_FORMAT_ARGB1555:
3153 case DRM_FORMAT_ABGR1555:
3154 case DRM_FORMAT_RGBA5551:
3155 case DRM_FORMAT_BGRA5551:
3156 case DRM_FORMAT_RGB565:
3157 case DRM_FORMAT_BGR565:
3158 case DRM_FORMAT_RGB888:
3159 case DRM_FORMAT_BGR888:
3160 case DRM_FORMAT_XRGB8888:
3161 case DRM_FORMAT_XBGR8888:
3162 case DRM_FORMAT_RGBX8888:
3163 case DRM_FORMAT_BGRX8888:
3164 case DRM_FORMAT_ARGB8888:
3165 case DRM_FORMAT_ABGR8888:
3166 case DRM_FORMAT_RGBA8888:
3167 case DRM_FORMAT_BGRA8888:
3168 case DRM_FORMAT_XRGB2101010:
3169 case DRM_FORMAT_XBGR2101010:
3170 case DRM_FORMAT_RGBX1010102:
3171 case DRM_FORMAT_BGRX1010102:
3172 case DRM_FORMAT_ARGB2101010:
3173 case DRM_FORMAT_ABGR2101010:
3174 case DRM_FORMAT_RGBA1010102:
3175 case DRM_FORMAT_BGRA1010102:
3176 case DRM_FORMAT_YUYV:
3177 case DRM_FORMAT_YVYU:
3178 case DRM_FORMAT_UYVY:
3179 case DRM_FORMAT_VYUY:
3180 case DRM_FORMAT_AYUV:
3181 case DRM_FORMAT_NV12:
3182 case DRM_FORMAT_NV21:
3183 case DRM_FORMAT_NV16:
3184 case DRM_FORMAT_NV61:
ba623f6a
LP		 3185 case DRM_FORMAT_NV24:
3186 case DRM_FORMAT_NV42:
935b5977
VS		 3187 case DRM_FORMAT_YUV410:
3188 case DRM_FORMAT_YVU410:
3189 case DRM_FORMAT_YUV411:
3190 case DRM_FORMAT_YVU411:
3191 case DRM_FORMAT_YUV420:
3192 case DRM_FORMAT_YVU420:
3193 case DRM_FORMAT_YUV422:
3194 case DRM_FORMAT_YVU422:
3195 case DRM_FORMAT_YUV444:
3196 case DRM_FORMAT_YVU444:
3197 return 0;
3198 default:
23c453a4
VS		 3199 DRM_DEBUG_KMS("invalid pixel format %s\n",
3200 drm_get_format_name(r->pixel_format));
935b5977
VS		 3201 return -EINVAL;
3202 }
3203}
3204
cff91b62 3205static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 3206{
3207 int ret, hsub, vsub, num_planes, i;
3208
3209 ret = format_check(r);
3210 if (ret) {
6ba6d03e
VS		 3211 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3212 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 3213 return ret;
3214 }
3215
3216 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3217 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3218 num_planes = drm_format_num_planes(r->pixel_format);
3219
3220 if (r->width == 0 || r->width % hsub) {
209f5527 3221 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
d1b45d5f
VS		 3222 return -EINVAL;
3223 }
3224
3225 if (r->height == 0 || r->height % vsub) {
1aa1b11c 3226 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 3227 return -EINVAL;
3228 }
3229
3230 for (i = 0; i < num_planes; i++) {
3231 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 3232 unsigned int height = r->height / (i != 0 ? vsub : 1);
3233 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 3234
3235 if (!r->handles[i]) {
1aa1b11c 3236 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 3237 return -EINVAL;
3238 }
3239
b180b5d1
VS		 3240 if ((uint64_t) width * cpp > UINT_MAX)
3241 return -ERANGE;
3242
3243 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3244 return -ERANGE;
3245
3246 if (r->pitches[i] < width * cpp) {
1aa1b11c 3247 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 3248 return -EINVAL;
3249 }
e3eb3250
RC		 3250
3251 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3252 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3253 r->modifier[i], i);
3254 return -EINVAL;
3255 }
570655b0
RC		 3256
3257 /* modifier specific checks: */
3258 switch (r->modifier[i]) {
3259 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3260 /* NOTE: the pitch restriction may be lifted later if it turns
3261 * out that no hw has this restriction:
3262 */
3263 if (r->pixel_format != DRM_FORMAT_NV12 ||
3264 width % 128 || height % 32 ||
3265 r->pitches[i] % 128) {
3266 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3267 return -EINVAL;
3268 }
3269 break;
3270
3271 default:
3272 break;
3273 }
d1b45d5f
VS		 3274 }
3275
bbe16a40
DV		 3276 for (i = num_planes; i < 4; i++) {
3277 if (r->modifier[i]) {
3278 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3279 return -EINVAL;
3280 }
3281
3282 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3283 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3284 continue;
3285
3286 if (r->handles[i]) {
3287 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3288 return -EINVAL;
3289 }
3290
3291 if (r->pitches[i]) {
3292 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3293 return -EINVAL;
3294 }
3295
3296 if (r->offsets[i]) {
3297 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3298 return -EINVAL;
3299 }
3300 }
3301
d1b45d5f
VS		 3302 return 0;
3303}
3304
9a6f5130
CW		 3305static struct drm_framebuffer *
3306internal_framebuffer_create(struct drm_device *dev,
3307 struct drm_mode_fb_cmd2 *r,
3308 struct drm_file *file_priv)
308e5bcb 3309{
f453ba04
DA		 3310 struct drm_mode_config *config = &dev->mode_config;
3311 struct drm_framebuffer *fb;
4a1b0714 3312 int ret;
f453ba04 3313
e3eb3250 3314 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
e3cc3520 3315 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
c394c2b0 3316 return ERR_PTR(-EINVAL);
e3cc3520
VS		 3317 }
3318
f453ba04 3319 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 3320 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 3321 r->width, config->min_width, config->max_width);
c394c2b0 3322 return ERR_PTR(-EINVAL);
f453ba04
DA		 3323 }
3324 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 3325 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 3326 r->height, config->min_height, config->max_height);
c394c2b0 3327 return ERR_PTR(-EINVAL);
f453ba04
DA		 3328 }
3329
e3eb3250
RC		 3330 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3331 !dev->mode_config.allow_fb_modifiers) {
3332 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3333 return ERR_PTR(-EINVAL);
3334 }
3335
d1b45d5f
VS		 3336 ret = framebuffer_check(r);
3337 if (ret)
c394c2b0 3338 return ERR_PTR(ret);
935b5977 3339
f453ba04 3340 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 3341 if (IS_ERR(fb)) {
1aa1b11c 3342 DRM_DEBUG_KMS("could not create framebuffer\n");
c394c2b0 3343 return fb;
f453ba04
DA		 3344 }
3345
c394c2b0
MR		 3346 return fb;
3347}
4b096ac1 3348
c394c2b0
MR		 3349/**
3350 * drm_mode_addfb2 - add an FB to the graphics configuration
3351 * @dev: drm device for the ioctl
3352 * @data: data pointer for the ioctl
3353 * @file_priv: drm file for the ioctl call
3354 *
3355 * Add a new FB to the specified CRTC, given a user request with format. This is
3356 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3357 * and uses fourcc codes as pixel format specifiers.
3358 *
3359 * Called by the user via ioctl.
3360 *
3361 * Returns:
1a498633 3362 * Zero on success, negative errno on failure.
c394c2b0
MR		 3363 */
3364int drm_mode_addfb2(struct drm_device *dev,
3365 void *data, struct drm_file *file_priv)
3366{
9a6f5130 3367 struct drm_mode_fb_cmd2 *r = data;
c394c2b0
MR		 3368 struct drm_framebuffer *fb;
3369
3370 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3371 return -EINVAL;
3372
9a6f5130 3373 fb = internal_framebuffer_create(dev, r, file_priv);
c394c2b0
MR		 3374 if (IS_ERR(fb))
3375 return PTR_ERR(fb);
3376
9a6f5130
CW		 3377 /* Transfer ownership to the filp for reaping on close */
3378
3379 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3380 mutex_lock(&file_priv->fbs_lock);
3381 r->fb_id = fb->base.id;
3382 list_add(&fb->filp_head, &file_priv->fbs);
3383 mutex_unlock(&file_priv->fbs_lock);
3384
c394c2b0 3385 return 0;
f453ba04
DA		 3386}
3387
3388/**
3389 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 3390 * @dev: drm device for the ioctl
3391 * @data: data pointer for the ioctl
3392 * @file_priv: drm file for the ioctl call
f453ba04 3393 *
f453ba04
DA		 3394 * Remove the FB specified by the user.
3395 *
3396 * Called by the user via ioctl.
3397 *
c8e32cc1 3398 * Returns:
1a498633 3399 * Zero on success, negative errno on failure.
f453ba04
DA		 3400 */
3401int drm_mode_rmfb(struct drm_device *dev,
3402 void *data, struct drm_file *file_priv)
3403{
f453ba04
DA		 3404 struct drm_framebuffer *fb = NULL;
3405 struct drm_framebuffer *fbl = NULL;
3406 uint32_t *id = data;
f453ba04
DA		 3407 int found = 0;
3408
fb3b06c8
DA		 3409 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3410 return -EINVAL;
3411
4b096ac1 3412 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 3413 mutex_lock(&dev->mode_config.fb_lock);
3414 fb = __drm_framebuffer_lookup(dev, *id);
3415 if (!fb)
3416 goto fail_lookup;
3417
f453ba04
DA		 3418 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3419 if (fb == fbl)
3420 found = 1;
2b677e8c
DV		 3421 if (!found)
3422 goto fail_lookup;
3423
3424 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3425 __drm_framebuffer_unregister(dev, fb);
f453ba04 3426
4b096ac1 3427 list_del_init(&fb->filp_head);
2b677e8c 3428 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 3429 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3430
4b096ac1 3431 drm_framebuffer_remove(fb);
4b096ac1 3432
2b677e8c
DV		 3433 return 0;
3434
3435fail_lookup:
3436 mutex_unlock(&dev->mode_config.fb_lock);
3437 mutex_unlock(&file_priv->fbs_lock);
3438
37c4e705 3439 return -ENOENT;
f453ba04
DA		 3440}
3441
3442/**
3443 * drm_mode_getfb - get FB info
065a50ed
DV		 3444 * @dev: drm device for the ioctl
3445 * @data: data pointer for the ioctl
3446 * @file_priv: drm file for the ioctl call
f453ba04 3447 *
f453ba04
DA		 3448 * Lookup the FB given its ID and return info about it.
3449 *
3450 * Called by the user via ioctl.
3451 *
c8e32cc1 3452 * Returns:
1a498633 3453 * Zero on success, negative errno on failure.
f453ba04
DA		 3454 */
3455int drm_mode_getfb(struct drm_device *dev,
3456 void *data, struct drm_file *file_priv)
3457{
3458 struct drm_mode_fb_cmd *r = data;
f453ba04 3459 struct drm_framebuffer *fb;
58c0dca1 3460 int ret;
f453ba04 3461
fb3b06c8
DA		 3462 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3463 return -EINVAL;
3464
786b99ed 3465 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 3466 if (!fb)
37c4e705 3467 return -ENOENT;
f453ba04
DA		 3468
3469 r->height = fb->height;
3470 r->width = fb->width;
3471 r->depth = fb->depth;
3472 r->bpp = fb->bits_per_pixel;
01f2c773 3473 r->pitch = fb->pitches[0];
101b96f3 3474 if (fb->funcs->create_handle) {
09f308f7 3475 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 3476 drm_is_control_client(file_priv)) {
101b96f3
DH		 3477 ret = fb->funcs->create_handle(fb, file_priv,
3478 &r->handle);
3479 } else {
3480 /* GET_FB() is an unprivileged ioctl so we must not
3481 * return a buffer-handle to non-master processes! For
3482 * backwards-compatibility reasons, we cannot make
3483 * GET_FB() privileged, so just return an invalid handle
3484 * for non-masters. */
3485 r->handle = 0;
3486 ret = 0;
3487 }
3488 } else {
af26ef3b 3489 ret = -ENODEV;
101b96f3 3490 }
f453ba04 3491
58c0dca1
DV		 3492 drm_framebuffer_unreference(fb);
3493
f453ba04
DA		 3494 return ret;
3495}
3496
c8e32cc1
DV		 3497/**
3498 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3499 * @dev: drm device for the ioctl
3500 * @data: data pointer for the ioctl
3501 * @file_priv: drm file for the ioctl call
3502 *
3503 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3504 * rectangle list. Generic userspace which does frontbuffer rendering must call
3505 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3506 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3507 *
3508 * Modesetting drivers which always update the frontbuffer do not need to
3509 * implement the corresponding ->dirty framebuffer callback.
3510 *
3511 * Called by the user via ioctl.
3512 *
3513 * Returns:
1a498633 3514 * Zero on success, negative errno on failure.
c8e32cc1 3515 */
884840aa
JB		 3516int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3517 void *data, struct drm_file *file_priv)
3518{
3519 struct drm_clip_rect __user *clips_ptr;
3520 struct drm_clip_rect *clips = NULL;
3521 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 3522 struct drm_framebuffer *fb;
3523 unsigned flags;
3524 int num_clips;
4a1b0714 3525 int ret;
884840aa 3526
fb3b06c8
DA		 3527 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3528 return -EINVAL;
3529
786b99ed 3530 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 3531 if (!fb)
37c4e705 3532 return -ENOENT;
884840aa
JB		 3533
3534 num_clips = r->num_clips;
81f6c7f8 3535 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 3536
3537 if (!num_clips != !clips_ptr) {
3538 ret = -EINVAL;
3539 goto out_err1;
3540 }
3541
3542 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3543
3544 /* If userspace annotates copy, clips must come in pairs */
3545 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3546 ret = -EINVAL;
3547 goto out_err1;
3548 }
3549
3550 if (num_clips && clips_ptr) {
a5cd3351
XW		 3551 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3552 ret = -EINVAL;
3553 goto out_err1;
3554 }
bd3f0ff9 3555 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
884840aa
JB		 3556 if (!clips) {
3557 ret = -ENOMEM;
3558 goto out_err1;
3559 }
3560
3561 ret = copy_from_user(clips, clips_ptr,
3562 num_clips * sizeof(*clips));
e902a358
DC		 3563 if (ret) {
3564 ret = -EFAULT;
884840aa 3565 goto out_err2;
e902a358 3566 }
884840aa
JB		 3567 }
3568
3569 if (fb->funcs->dirty) {
02b00162
TH		 3570 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3571 clips, num_clips);
884840aa
JB		 3572 } else {
3573 ret = -ENOSYS;
884840aa
JB		 3574 }
3575
3576out_err2:
3577 kfree(clips);
3578out_err1:
4ccf097f
DV		 3579 drm_framebuffer_unreference(fb);
3580
884840aa
JB		 3581 return ret;
3582}
3583
3584
f453ba04
DA		 3585/**
3586 * drm_fb_release - remove and free the FBs on this file
065a50ed 3587 * @priv: drm file for the ioctl
f453ba04 3588 *
f453ba04
DA		 3589 * Destroy all the FBs associated with @filp.
3590 *
3591 * Called by the user via ioctl.
3592 *
c8e32cc1 3593 * Returns:
1a498633 3594 * Zero on success, negative errno on failure.
f453ba04 3595 */
ea39f835 3596void drm_fb_release(struct drm_file *priv)
f453ba04 3597{
f453ba04
DA		 3598 struct drm_device *dev = priv->minor->dev;
3599 struct drm_framebuffer *fb, *tfb;
3600
1b116297
DV		 3601 /*
3602 * When the file gets released that means no one else can access the fb
e2db726b 3603 * list any more, so no need to grab fpriv->fbs_lock. And we need to
1b116297
DV		 3604 * avoid upsetting lockdep since the universal cursor code adds a
3605 * framebuffer while holding mutex locks.
3606 *
3607 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3608 * locks is impossible here since no one else but this function can get
3609 * at it any more.
3610 */
f453ba04 3611 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2b677e8c
DV		 3612
3613 mutex_lock(&dev->mode_config.fb_lock);
3614 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3615 __drm_framebuffer_unregister(dev, fb);
3616 mutex_unlock(&dev->mode_config.fb_lock);
3617
4b096ac1 3618 list_del_init(&fb->filp_head);
2b677e8c
DV		 3619
3620 /* This will also drop the fpriv->fbs reference. */
f7eff60e 3621 drm_framebuffer_remove(fb);
f453ba04 3622 }
f453ba04
DA		 3623}
3624
c8e32cc1
DV		 3625/**
3626 * drm_property_create - create a new property type
3627 * @dev: drm device
3628 * @flags: flags specifying the property type
3629 * @name: name of the property
3630 * @num_values: number of pre-defined values
3631 *
3632 * This creates a new generic drm property which can then be attached to a drm
3633 * object with drm_object_attach_property. The returned property object must be
3634 * freed with drm_property_destroy.
3635 *
3b5b9932
DL		 3636 * Note that the DRM core keeps a per-device list of properties and that, if
3637 * drm_mode_config_cleanup() is called, it will destroy all properties created
3638 * by the driver.
3639 *
c8e32cc1
DV		 3640 * Returns:
3641 * A pointer to the newly created property on success, NULL on failure.
3642 */
f453ba04
DA		 3643struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3644 const char *name, int num_values)
3645{
3646 struct drm_property *property = NULL;
6bfc56aa 3647 int ret;
f453ba04
DA		 3648
3649 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3650 if (!property)
3651 return NULL;
3652
98f75de4
RC		 3653 property->dev = dev;
3654
f453ba04 3655 if (num_values) {
bd3f0ff9
TR		 3656 property->values = kcalloc(num_values, sizeof(uint64_t),
3657 GFP_KERNEL);
f453ba04
DA		 3658 if (!property->values)
3659 goto fail;
3660 }
3661
6bfc56aa
VS		 3662 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3663 if (ret)
3664 goto fail;
3665
f453ba04
DA		 3666 property->flags = flags;
3667 property->num_values = num_values;
3758b341 3668 INIT_LIST_HEAD(&property->enum_list);
f453ba04 3669
471dd2ef 3670 if (name) {
f453ba04 3671 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3672 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3673 }
f453ba04
DA		 3674
3675 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3676
3677 WARN_ON(!drm_property_type_valid(property));
3678
f453ba04
DA		 3679 return property;
3680fail:
6bfc56aa 3681 kfree(property->values);
f453ba04
DA		 3682 kfree(property);
3683 return NULL;
3684}
3685EXPORT_SYMBOL(drm_property_create);
3686
c8e32cc1 3687/**
2aa9d2bc 3688 * drm_property_create_enum - create a new enumeration property type
c8e32cc1
DV		 3689 * @dev: drm device
3690 * @flags: flags specifying the property type
3691 * @name: name of the property
3692 * @props: enumeration lists with property values
3693 * @num_values: number of pre-defined values
3694 *
3695 * This creates a new generic drm property which can then be attached to a drm
3696 * object with drm_object_attach_property. The returned property object must be
3697 * freed with drm_property_destroy.
3698 *
3699 * Userspace is only allowed to set one of the predefined values for enumeration
3700 * properties.
3701 *
3702 * Returns:
3703 * A pointer to the newly created property on success, NULL on failure.
3704 */
4a67d391
SH		 3705struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3706 const char *name,
3707 const struct drm_prop_enum_list *props,
3708 int num_values)
3709{
3710 struct drm_property *property;
3711 int i, ret;
3712
3713 flags |= DRM_MODE_PROP_ENUM;
3714
3715 property = drm_property_create(dev, flags, name, num_values);
3716 if (!property)
3717 return NULL;
3718
3719 for (i = 0; i < num_values; i++) {
3720 ret = drm_property_add_enum(property, i,
3721 props[i].type,
3722 props[i].name);
3723 if (ret) {
3724 drm_property_destroy(dev, property);
3725 return NULL;
3726 }
3727 }
3728
3729 return property;
3730}
3731EXPORT_SYMBOL(drm_property_create_enum);
3732
c8e32cc1 3733/**
2aa9d2bc 3734 * drm_property_create_bitmask - create a new bitmask property type
c8e32cc1
DV		 3735 * @dev: drm device
3736 * @flags: flags specifying the property type
3737 * @name: name of the property
3738 * @props: enumeration lists with property bitflags
295ee853
DV		 3739 * @num_props: size of the @props array
3740 * @supported_bits: bitmask of all supported enumeration values
c8e32cc1 3741 *
295ee853 3742 * This creates a new bitmask drm property which can then be attached to a drm
c8e32cc1
DV		 3743 * object with drm_object_attach_property. The returned property object must be
3744 * freed with drm_property_destroy.
3745 *
3746 * Compared to plain enumeration properties userspace is allowed to set any
3747 * or'ed together combination of the predefined property bitflag values
3748 *
3749 * Returns:
3750 * A pointer to the newly created property on success, NULL on failure.
3751 */
49e27545
RC		 3752struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3753 int flags, const char *name,
3754 const struct drm_prop_enum_list *props,
7689ffb3
VS		 3755 int num_props,
3756 uint64_t supported_bits)
49e27545
RC		 3757{
3758 struct drm_property *property;
7689ffb3
VS		 3759 int i, ret, index = 0;
3760 int num_values = hweight64(supported_bits);
49e27545
RC		 3761
3762 flags |= DRM_MODE_PROP_BITMASK;
3763
3764 property = drm_property_create(dev, flags, name, num_values);
3765 if (!property)
3766 return NULL;
7689ffb3
VS		 3767 for (i = 0; i < num_props; i++) {
3768 if (!(supported_bits & (1ULL << props[i].type)))
3769 continue;
49e27545 3770
7689ffb3
VS		 3771 if (WARN_ON(index >= num_values)) {
3772 drm_property_destroy(dev, property);
3773 return NULL;
3774 }
3775
3776 ret = drm_property_add_enum(property, index++,
49e27545
RC		 3777 props[i].type,
3778 props[i].name);
3779 if (ret) {
3780 drm_property_destroy(dev, property);
3781 return NULL;
3782 }
3783 }
3784
3785 return property;
3786}
3787EXPORT_SYMBOL(drm_property_create_bitmask);
3788
ebc44cf3
RC		 3789static struct drm_property *property_create_range(struct drm_device *dev,
3790 int flags, const char *name,
3791 uint64_t min, uint64_t max)
3792{
3793 struct drm_property *property;
3794
3795 property = drm_property_create(dev, flags, name, 2);
3796 if (!property)
3797 return NULL;
3798
3799 property->values[0] = min;
3800 property->values[1] = max;
3801
3802 return property;
3803}
3804
c8e32cc1 3805/**
960cd9d4 3806 * drm_property_create_range - create a new unsigned ranged property type
c8e32cc1
DV		 3807 * @dev: drm device
3808 * @flags: flags specifying the property type
3809 * @name: name of the property
3810 * @min: minimum value of the property
3811 * @max: maximum value of the property
3812 *
3813 * This creates a new generic drm property which can then be attached to a drm
3814 * object with drm_object_attach_property. The returned property object must be
3815 * freed with drm_property_destroy.
3816 *
960cd9d4
DV		 3817 * Userspace is allowed to set any unsigned integer value in the (min, max)
3818 * range inclusive.
c8e32cc1
DV		 3819 *
3820 * Returns:
3821 * A pointer to the newly created property on success, NULL on failure.
3822 */
d9bc3c02
SH		 3823struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3824 const char *name,
3825 uint64_t min, uint64_t max)
3826{
ebc44cf3
RC		 3827 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3828 name, min, max);
d9bc3c02
SH		 3829}
3830EXPORT_SYMBOL(drm_property_create_range);
3831
960cd9d4
DV		 3832/**
3833 * drm_property_create_signed_range - create a new signed ranged property type
3834 * @dev: drm device
3835 * @flags: flags specifying the property type
3836 * @name: name of the property
3837 * @min: minimum value of the property
3838 * @max: maximum value of the property
3839 *
3840 * This creates a new generic drm property which can then be attached to a drm
3841 * object with drm_object_attach_property. The returned property object must be
3842 * freed with drm_property_destroy.
3843 *
3844 * Userspace is allowed to set any signed integer value in the (min, max)
3845 * range inclusive.
3846 *
3847 * Returns:
3848 * A pointer to the newly created property on success, NULL on failure.
3849 */
ebc44cf3
RC		 3850struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3851 int flags, const char *name,
3852 int64_t min, int64_t max)
3853{
3854 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3855 name, I642U64(min), I642U64(max));
3856}
3857EXPORT_SYMBOL(drm_property_create_signed_range);
3858
960cd9d4
DV		 3859/**
3860 * drm_property_create_object - create a new object property type
3861 * @dev: drm device
3862 * @flags: flags specifying the property type
3863 * @name: name of the property
3864 * @type: object type from DRM_MODE_OBJECT_* defines
3865 *
3866 * This creates a new generic drm property which can then be attached to a drm
3867 * object with drm_object_attach_property. The returned property object must be
3868 * freed with drm_property_destroy.
3869 *
3870 * Userspace is only allowed to set this to any property value of the given
3871 * @type. Only useful for atomic properties, which is enforced.
3872 *
3873 * Returns:
3874 * A pointer to the newly created property on success, NULL on failure.
3875 */
98f75de4
RC		 3876struct drm_property *drm_property_create_object(struct drm_device *dev,
3877 int flags, const char *name, uint32_t type)
3878{
3879 struct drm_property *property;
3880
3881 flags |= DRM_MODE_PROP_OBJECT;
3882
960cd9d4
DV		 3883 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3884 return NULL;
3885
98f75de4
RC		 3886 property = drm_property_create(dev, flags, name, 1);
3887 if (!property)
3888 return NULL;
3889
3890 property->values[0] = type;
3891
3892 return property;
3893}
3894EXPORT_SYMBOL(drm_property_create_object);
3895
960cd9d4
DV		 3896/**
3897 * drm_property_create_bool - create a new boolean property type
3898 * @dev: drm device
3899 * @flags: flags specifying the property type
3900 * @name: name of the property
3901 *
3902 * This creates a new generic drm property which can then be attached to a drm
3903 * object with drm_object_attach_property. The returned property object must be
3904 * freed with drm_property_destroy.
3905 *
3906 * This is implemented as a ranged property with only {0, 1} as valid values.
3907 *
3908 * Returns:
3909 * A pointer to the newly created property on success, NULL on failure.
3910 */
3911struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3912 const char *name)
3913{
3914 return drm_property_create_range(dev, flags, name, 0, 1);
3915}
3916EXPORT_SYMBOL(drm_property_create_bool);
3917
c8e32cc1
DV		 3918/**
3919 * drm_property_add_enum - add a possible value to an enumeration property
3920 * @property: enumeration property to change
3921 * @index: index of the new enumeration
3922 * @value: value of the new enumeration
3923 * @name: symbolic name of the new enumeration
3924 *
3925 * This functions adds enumerations to a property.
3926 *
3927 * It's use is deprecated, drivers should use one of the more specific helpers
3928 * to directly create the property with all enumerations already attached.
3929 *
3930 * Returns:
3931 * Zero on success, error code on failure.
3932 */
f453ba04
DA		 3933int drm_property_add_enum(struct drm_property *property, int index,
3934 uint64_t value, const char *name)
3935{
3936 struct drm_property_enum *prop_enum;
3937
5ea22f24
RC		 3938 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3939 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 3940 return -EINVAL;
3941
3942 /*
3943 * Bitmask enum properties have the additional constraint of values
3944 * from 0 to 63
3945 */
5ea22f24
RC		 3946 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3947 (value > 63))
f453ba04
DA		 3948 return -EINVAL;
3949
3758b341
DV		 3950 if (!list_empty(&property->enum_list)) {
3951 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 3952 if (prop_enum->value == value) {
3953 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3954 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3955 return 0;
3956 }
3957 }
3958 }
3959
3960 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3961 if (!prop_enum)
3962 return -ENOMEM;
3963
3964 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3965 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3966 prop_enum->value = value;
3967
3968 property->values[index] = value;
3758b341 3969 list_add_tail(&prop_enum->head, &property->enum_list);
f453ba04
DA		 3970 return 0;
3971}
3972EXPORT_SYMBOL(drm_property_add_enum);
3973
c8e32cc1
DV		 3974/**
3975 * drm_property_destroy - destroy a drm property
3976 * @dev: drm device
3977 * @property: property to destry
3978 *
3979 * This function frees a property including any attached resources like
3980 * enumeration values.
3981 */
f453ba04
DA		 3982void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3983{
3984 struct drm_property_enum *prop_enum, *pt;
3985
3758b341 3986 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
f453ba04
DA		 3987 list_del(&prop_enum->head);
3988 kfree(prop_enum);
3989 }
3990
3991 if (property->num_values)
3992 kfree(property->values);
3993 drm_mode_object_put(dev, &property->base);
3994 list_del(&property->head);
3995 kfree(property);
3996}
3997EXPORT_SYMBOL(drm_property_destroy);
3998
c8e32cc1
DV		 3999/**
4000 * drm_object_attach_property - attach a property to a modeset object
4001 * @obj: drm modeset object
4002 * @property: property to attach
4003 * @init_val: initial value of the property
4004 *
4005 * This attaches the given property to the modeset object with the given initial
4006 * value. Currently this function cannot fail since the properties are stored in
4007 * a statically sized array.
4008 */
c543188a
PZ		 4009void drm_object_attach_property(struct drm_mode_object *obj,
4010 struct drm_property *property,
4011 uint64_t init_val)
4012{
7f88a9be 4013 int count = obj->properties->count;
c543188a 4014
7f88a9be
PZ		 4015 if (count == DRM_OBJECT_MAX_PROPERTY) {
4016 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4017 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4018 "you see this message on the same object type.\n",
4019 obj->type);
4020 return;
c543188a
PZ		 4021 }
4022
b17cd757 4023 obj->properties->properties[count] = property;
7f88a9be
PZ		 4024 obj->properties->values[count] = init_val;
4025 obj->properties->count++;
88a48e29
RC		 4026 if (property->flags & DRM_MODE_PROP_ATOMIC)
4027 obj->properties->atomic_count++;
c543188a
PZ		 4028}
4029EXPORT_SYMBOL(drm_object_attach_property);
4030
c8e32cc1
DV		 4031/**
4032 * drm_object_property_set_value - set the value of a property
4033 * @obj: drm mode object to set property value for
4034 * @property: property to set
4035 * @val: value the property should be set to
4036 *
4037 * This functions sets a given property on a given object. This function only
4038 * changes the software state of the property, it does not call into the
4039 * driver's ->set_property callback.
4040 *
4041 * Returns:
4042 * Zero on success, error code on failure.
4043 */
c543188a
PZ		 4044int drm_object_property_set_value(struct drm_mode_object *obj,
4045 struct drm_property *property, uint64_t val)
4046{
4047 int i;
4048
7f88a9be 4049 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4050 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4051 obj->properties->values[i] = val;
4052 return 0;
4053 }
4054 }
4055
4056 return -EINVAL;
4057}
4058EXPORT_SYMBOL(drm_object_property_set_value);
4059
c8e32cc1
DV		 4060/**
4061 * drm_object_property_get_value - retrieve the value of a property
4062 * @obj: drm mode object to get property value from
4063 * @property: property to retrieve
4064 * @val: storage for the property value
4065 *
4066 * This function retrieves the softare state of the given property for the given
4067 * property. Since there is no driver callback to retrieve the current property
4068 * value this might be out of sync with the hardware, depending upon the driver
4069 * and property.
4070 *
4071 * Returns:
4072 * Zero on success, error code on failure.
4073 */
c543188a
PZ		 4074int drm_object_property_get_value(struct drm_mode_object *obj,
4075 struct drm_property *property, uint64_t *val)
4076{
4077 int i;
4078
88a48e29
RC		 4079 /* read-only properties bypass atomic mechanism and still store
4080 * their value in obj->properties->values[].. mostly to avoid
4081 * having to deal w/ EDID and similar props in atomic paths:
4082 */
4083 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4084 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4085 return drm_atomic_get_property(obj, property, val);
4086
7f88a9be 4087 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4088 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4089 *val = obj->properties->values[i];
4090 return 0;
4091 }
4092 }
4093
4094 return -EINVAL;
4095}
4096EXPORT_SYMBOL(drm_object_property_get_value);
4097
c8e32cc1 4098/**
1a498633 4099 * drm_mode_getproperty_ioctl - get the property metadata
c8e32cc1
DV		 4100 * @dev: DRM device
4101 * @data: ioctl data
4102 * @file_priv: DRM file info
4103 *
1a498633
DV		 4104 * This function retrieves the metadata for a given property, like the different
4105 * possible values for an enum property or the limits for a range property.
4106 *
4107 * Blob properties are special
c8e32cc1
DV		 4108 *
4109 * Called by the user via ioctl.
4110 *
4111 * Returns:
1a498633 4112 * Zero on success, negative errno on failure.
c8e32cc1 4113 */
f453ba04
DA		 4114int drm_mode_getproperty_ioctl(struct drm_device *dev,
4115 void *data, struct drm_file *file_priv)
4116{
f453ba04
DA		 4117 struct drm_mode_get_property *out_resp = data;
4118 struct drm_property *property;
4119 int enum_count = 0;
f453ba04
DA		 4120 int value_count = 0;
4121 int ret = 0, i;
4122 int copied;
4123 struct drm_property_enum *prop_enum;
4124 struct drm_mode_property_enum __user *enum_ptr;
f453ba04 4125 uint64_t __user *values_ptr;
f453ba04 4126
fb3b06c8
DA		 4127 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4128 return -EINVAL;
4129
84849903 4130 drm_modeset_lock_all(dev);
a2b34e22
RC		 4131 property = drm_property_find(dev, out_resp->prop_id);
4132 if (!property) {
f27657f2 4133 ret = -ENOENT;
f453ba04
DA		 4134 goto done;
4135 }
f453ba04 4136
5ea22f24
RC		 4137 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4138 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3758b341 4139 list_for_each_entry(prop_enum, &property->enum_list, head)
f453ba04 4140 enum_count++;
f453ba04
DA		 4141 }
4142
4143 value_count = property->num_values;
4144
4145 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4146 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4147 out_resp->flags = property->flags;
4148
4149 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 4150 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 4151 for (i = 0; i < value_count; i++) {
4152 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4153 ret = -EFAULT;
4154 goto done;
4155 }
4156 }
4157 }
4158 out_resp->count_values = value_count;
4159
5ea22f24
RC		 4160 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4161 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 4162 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4163 copied = 0;
81f6c7f8 4164 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3758b341 4165 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 4166
4167 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4168 ret = -EFAULT;
4169 goto done;
4170 }
4171
4172 if (copy_to_user(&enum_ptr[copied].name,
4173 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4174 ret = -EFAULT;
4175 goto done;
4176 }
4177 copied++;
4178 }
4179 }
4180 out_resp->count_enum_blobs = enum_count;
4181 }
4182
3758b341
DV		 4183 /*
4184 * NOTE: The idea seems to have been to use this to read all the blob
4185 * property values. But nothing ever added them to the corresponding
4186 * list, userspace always used the special-purpose get_blob ioctl to
4187 * read the value for a blob property. It also doesn't make a lot of
4188 * sense to return values here when everything else is just metadata for
4189 * the property itself.
4190 */
4191 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4192 out_resp->count_enum_blobs = 0;
f453ba04 4193done:
84849903 4194 drm_modeset_unlock_all(dev);
f453ba04
DA		 4195 return ret;
4196}
4197
99531d9b
DS		 4198/**
4199 * drm_property_create_blob - Create new blob property
4200 *
4201 * Creates a new blob property for a specified DRM device, optionally
4202 * copying data.
4203 *
4204 * @dev: DRM device to create property for
4205 * @length: Length to allocate for blob data
4206 * @data: If specified, copies data into blob
10e8cb7e
DS		 4207 *
4208 * Returns:
4209 * New blob property with a single reference on success, or an ERR_PTR
4210 * value on failure.
99531d9b 4211 */
6bcacf51 4212struct drm_property_blob *
ecbbe59b 4213drm_property_create_blob(struct drm_device *dev, size_t length,
12e6cecd 4214 const void *data)
f453ba04
DA		 4215{
4216 struct drm_property_blob *blob;
6bfc56aa 4217 int ret;
f453ba04 4218
99531d9b 4219 if (!length)
10e8cb7e 4220 return ERR_PTR(-EINVAL);
f453ba04
DA		 4221
4222 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4223 if (!blob)
10e8cb7e 4224 return ERR_PTR(-ENOMEM);
f453ba04 4225
e2f5d2ea
DS		 4226 /* This must be explicitly initialised, so we can safely call list_del
4227 * on it in the removal handler, even if it isn't in a file list. */
4228 INIT_LIST_HEAD(&blob->head_file);
8fb6e7a5 4229 blob->length = length;
6bcacf51 4230 blob->dev = dev;
8fb6e7a5 4231
99531d9b
DS		 4232 if (data)
4233 memcpy(blob->data, data, length);
8fb6e7a5
DS		 4234
4235 mutex_lock(&dev->mode_config.blob_lock);
4236
6bfc56aa
VS		 4237 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4238 if (ret) {
4239 kfree(blob);
8fb6e7a5 4240 mutex_unlock(&dev->mode_config.blob_lock);
10e8cb7e 4241 return ERR_PTR(-EINVAL);
6bfc56aa
VS		 4242 }
4243
6bcacf51 4244 kref_init(&blob->refcount);
f453ba04 4245
e2f5d2ea
DS		 4246 list_add_tail(&blob->head_global,
4247 &dev->mode_config.property_blob_list);
f453ba04 4248
8fb6e7a5 4249 mutex_unlock(&dev->mode_config.blob_lock);
f453ba04 4250
f453ba04
DA		 4251 return blob;
4252}
6bcacf51 4253EXPORT_SYMBOL(drm_property_create_blob);
f453ba04 4254
6bcacf51
DS		 4255/**
4256 * drm_property_free_blob - Blob property destructor
4257 *
4258 * Internal free function for blob properties; must not be used directly.
4259 *
f102c16e 4260 * @kref: Reference
6bcacf51
DS		 4261 */
4262static void drm_property_free_blob(struct kref *kref)
f453ba04 4263{
6bcacf51
DS		 4264 struct drm_property_blob *blob =
4265 container_of(kref, struct drm_property_blob, refcount);
4266
4267 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4268
e2f5d2ea
DS		 4269 list_del(&blob->head_global);
4270 list_del(&blob->head_file);
6bcacf51 4271 drm_mode_object_put(blob->dev, &blob->base);
8fb6e7a5 4272
f453ba04
DA		 4273 kfree(blob);
4274}
4275
6bcacf51
DS		 4276/**
4277 * drm_property_unreference_blob - Unreference a blob property
4278 *
4279 * Drop a reference on a blob property. May free the object.
4280 *
f102c16e 4281 * @blob: Pointer to blob property
6bcacf51
DS		 4282 */
4283void drm_property_unreference_blob(struct drm_property_blob *blob)
4284{
4285 struct drm_device *dev;
4286
4287 if (!blob)
4288 return;
4289
4290 dev = blob->dev;
4291
4292 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4293
4294 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4295 &dev->mode_config.blob_lock))
4296 mutex_unlock(&dev->mode_config.blob_lock);
4297 else
4298 might_lock(&dev->mode_config.blob_lock);
4299
4300}
4301EXPORT_SYMBOL(drm_property_unreference_blob);
4302
4303/**
4304 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4305 *
4306 * Drop a reference on a blob property. May free the object. This must be
4307 * called with blob_lock held.
4308 *
f102c16e 4309 * @blob: Pointer to blob property
6bcacf51
DS		 4310 */
4311static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4312{
4313 if (!blob)
4314 return;
4315
4316 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4317
4318 kref_put(&blob->refcount, drm_property_free_blob);
4319}
4320
e2f5d2ea
DS		 4321/**
4322 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4323 * @dev: DRM device
4324 * @file_priv: destroy all blobs owned by this file handle
4325 */
4326void drm_property_destroy_user_blobs(struct drm_device *dev,
4327 struct drm_file *file_priv)
4328{
4329 struct drm_property_blob *blob, *bt;
4330
4331 mutex_lock(&dev->mode_config.blob_lock);
4332
4333 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4334 list_del_init(&blob->head_file);
4335 drm_property_unreference_blob_locked(blob);
4336 }
4337
4338 mutex_unlock(&dev->mode_config.blob_lock);
4339}
4340
6bcacf51
DS		 4341/**
4342 * drm_property_reference_blob - Take a reference on an existing property
4343 *
4344 * Take a new reference on an existing blob property.
4345 *
f102c16e 4346 * @blob: Pointer to blob property
6bcacf51
DS		 4347 */
4348struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4349{
4350 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4351 kref_get(&blob->refcount);
4352 return blob;
4353}
4354EXPORT_SYMBOL(drm_property_reference_blob);
4355
4356/*
4357 * Like drm_property_lookup_blob, but does not return an additional reference.
4358 * Must be called with blob_lock held.
4359 */
4360static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4361 uint32_t id)
4362{
4363 struct drm_mode_object *obj = NULL;
4364 struct drm_property_blob *blob;
4365
4366 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4367
4368 mutex_lock(&dev->mode_config.idr_mutex);
4369 obj = idr_find(&dev->mode_config.crtc_idr, id);
4370 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4371 blob = NULL;
4372 else
4373 blob = obj_to_blob(obj);
4374 mutex_unlock(&dev->mode_config.idr_mutex);
4375
4376 return blob;
4377}
4378
4379/**
4380 * drm_property_lookup_blob - look up a blob property and take a reference
4381 * @dev: drm device
4382 * @id: id of the blob property
4383 *
4384 * If successful, this takes an additional reference to the blob property.
4385 * callers need to make sure to eventually unreference the returned property
4386 * again, using @drm_property_unreference_blob.
4387 */
4388struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4389 uint32_t id)
4390{
4391 struct drm_property_blob *blob;
4392
4393 mutex_lock(&dev->mode_config.blob_lock);
4394 blob = __drm_property_lookup_blob(dev, id);
4395 if (blob) {
4396 if (!kref_get_unless_zero(&blob->refcount))
4397 blob = NULL;
4398 }
4399 mutex_unlock(&dev->mode_config.blob_lock);
4400
4401 return blob;
4402}
4403EXPORT_SYMBOL(drm_property_lookup_blob);
4404
d2ed3436
DS		 4405/**
4406 * drm_property_replace_global_blob - atomically replace existing blob property
4407 * @dev: drm device
4408 * @replace: location of blob property pointer to be replaced
4409 * @length: length of data for new blob, or 0 for no data
4410 * @data: content for new blob, or NULL for no data
4411 * @obj_holds_id: optional object for property holding blob ID
4412 * @prop_holds_id: optional property holding blob ID
4413 * @return 0 on success or error on failure
4414 *
4415 * This function will atomically replace a global property in the blob list,
4416 * optionally updating a property which holds the ID of that property. It is
4417 * guaranteed to be atomic: no caller will be allowed to see intermediate
4418 * results, and either the entire operation will succeed and clean up the
4419 * previous property, or it will fail and the state will be unchanged.
4420 *
4421 * If length is 0 or data is NULL, no new blob will be created, and the holding
4422 * property, if specified, will be set to 0.
4423 *
4424 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4425 * by holding the relevant modesetting object lock for its parent.
4426 *
4427 * For example, a drm_connector has a 'PATH' property, which contains the ID
4428 * of a blob property with the value of the MST path information. Calling this
4429 * function with replace pointing to the connector's path_blob_ptr, length and
4430 * data set for the new path information, obj_holds_id set to the connector's
4431 * base object, and prop_holds_id set to the path property name, will perform
4432 * a completely atomic update. The access to path_blob_ptr is protected by the
4433 * caller holding a lock on the connector.
4434 */
4435static int drm_property_replace_global_blob(struct drm_device *dev,
4436 struct drm_property_blob **replace,
4437 size_t length,
4438 const void *data,
4439 struct drm_mode_object *obj_holds_id,
4440 struct drm_property *prop_holds_id)
4441{
4442 struct drm_property_blob *new_blob = NULL;
4443 struct drm_property_blob *old_blob = NULL;
4444 int ret;
4445
4446 WARN_ON(replace == NULL);
4447
4448 old_blob = *replace;
4449
4450 if (length && data) {
4451 new_blob = drm_property_create_blob(dev, length, data);
10e8cb7e
DS		 4452 if (IS_ERR(new_blob))
4453 return PTR_ERR(new_blob);
d2ed3436
DS		 4454 }
4455
4456 /* This does not need to be synchronised with blob_lock, as the
4457 * get_properties ioctl locks all modesetting objects, and
4458 * obj_holds_id must be locked before calling here, so we cannot
4459 * have its value out of sync with the list membership modified
4460 * below under blob_lock. */
4461 if (obj_holds_id) {
4462 ret = drm_object_property_set_value(obj_holds_id,
4463 prop_holds_id,
4464 new_blob ?
4465 new_blob->base.id : 0);
4466 if (ret != 0)
4467 goto err_created;
4468 }
4469
ec530829 4470 drm_property_unreference_blob(old_blob);
d2ed3436
DS		 4471 *replace = new_blob;
4472
4473 return 0;
4474
4475err_created:
6bcacf51 4476 drm_property_unreference_blob(new_blob);
d2ed3436
DS		 4477 return ret;
4478}
4479
c8e32cc1
DV		 4480/**
4481 * drm_mode_getblob_ioctl - get the contents of a blob property value
4482 * @dev: DRM device
4483 * @data: ioctl data
4484 * @file_priv: DRM file info
4485 *
4486 * This function retrieves the contents of a blob property. The value stored in
4487 * an object's blob property is just a normal modeset object id.
4488 *
4489 * Called by the user via ioctl.
4490 *
4491 * Returns:
1a498633 4492 * Zero on success, negative errno on failure.
c8e32cc1 4493 */
f453ba04
DA		 4494int drm_mode_getblob_ioctl(struct drm_device *dev,
4495 void *data, struct drm_file *file_priv)
4496{
f453ba04
DA		 4497 struct drm_mode_get_blob *out_resp = data;
4498 struct drm_property_blob *blob;
4499 int ret = 0;
81f6c7f8 4500 void __user *blob_ptr;
f453ba04 4501
fb3b06c8
DA		 4502 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4503 return -EINVAL;
4504
84849903 4505 drm_modeset_lock_all(dev);
8fb6e7a5 4506 mutex_lock(&dev->mode_config.blob_lock);
6bcacf51 4507 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
a2b34e22 4508 if (!blob) {
f27657f2 4509 ret = -ENOENT;
f453ba04
DA		 4510 goto done;
4511 }
f453ba04
DA		 4512
4513 if (out_resp->length == blob->length) {
81f6c7f8 4514 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4dfd909f 4515 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
f453ba04
DA		 4516 ret = -EFAULT;
4517 goto done;
4518 }
4519 }
4520 out_resp->length = blob->length;
4521
4522done:
8fb6e7a5 4523 mutex_unlock(&dev->mode_config.blob_lock);
84849903 4524 drm_modeset_unlock_all(dev);
f453ba04
DA		 4525 return ret;
4526}
4527
e2f5d2ea
DS		 4528/**
4529 * drm_mode_createblob_ioctl - create a new blob property
4530 * @dev: DRM device
4531 * @data: ioctl data
4532 * @file_priv: DRM file info
4533 *
4534 * This function creates a new blob property with user-defined values. In order
4535 * to give us sensible validation and checking when creating, rather than at
4536 * every potential use, we also require a type to be provided upfront.
4537 *
4538 * Called by the user via ioctl.
4539 *
4540 * Returns:
4541 * Zero on success, negative errno on failure.
4542 */
4543int drm_mode_createblob_ioctl(struct drm_device *dev,
4544 void *data, struct drm_file *file_priv)
4545{
4546 struct drm_mode_create_blob *out_resp = data;
4547 struct drm_property_blob *blob;
4548 void __user *blob_ptr;
4549 int ret = 0;
4550
4551 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4552 return -EINVAL;
4553
4554 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4555 if (IS_ERR(blob))
4556 return PTR_ERR(blob);
4557
4558 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4559 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4560 ret = -EFAULT;
4561 goto out_blob;
4562 }
4563
4564 /* Dropping the lock between create_blob and our access here is safe
4565 * as only the same file_priv can remove the blob; at this point, it is
4566 * not associated with any file_priv. */
4567 mutex_lock(&dev->mode_config.blob_lock);
4568 out_resp->blob_id = blob->base.id;
4569 list_add_tail(&file_priv->blobs, &blob->head_file);
4570 mutex_unlock(&dev->mode_config.blob_lock);
4571
4572 return 0;
4573
4574out_blob:
4575 drm_property_unreference_blob(blob);
4576 return ret;
4577}
4578
4579/**
4580 * drm_mode_destroyblob_ioctl - destroy a user blob property
4581 * @dev: DRM device
4582 * @data: ioctl data
4583 * @file_priv: DRM file info
4584 *
4585 * Destroy an existing user-defined blob property.
4586 *
4587 * Called by the user via ioctl.
4588 *
4589 * Returns:
4590 * Zero on success, negative errno on failure.
4591 */
4592int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4593 void *data, struct drm_file *file_priv)
4594{
4595 struct drm_mode_destroy_blob *out_resp = data;
4596 struct drm_property_blob *blob = NULL, *bt;
4597 bool found = false;
4598 int ret = 0;
4599
4600 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4601 return -EINVAL;
4602
4603 mutex_lock(&dev->mode_config.blob_lock);
4604 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4605 if (!blob) {
4606 ret = -ENOENT;
4607 goto err;
4608 }
4609
4610 /* Ensure the property was actually created by this user. */
4611 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4612 if (bt == blob) {
4613 found = true;
4614 break;
4615 }
4616 }
4617
4618 if (!found) {
4619 ret = -EPERM;
4620 goto err;
4621 }
4622
4623 /* We must drop head_file here, because we may not be the last
4624 * reference on the blob. */
4625 list_del_init(&blob->head_file);
4626 drm_property_unreference_blob_locked(blob);
4627 mutex_unlock(&dev->mode_config.blob_lock);
4628
4629 return 0;
4630
4631err:
4632 mutex_unlock(&dev->mode_config.blob_lock);
4633 return ret;
4634}
4635
cc7096fb
DA		 4636/**
4637 * drm_mode_connector_set_path_property - set tile property on connector
4638 * @connector: connector to set property on.
d2ed3436 4639 * @path: path to use for property; must not be NULL.
cc7096fb
DA		 4640 *
4641 * This creates a property to expose to userspace to specify a
4642 * connector path. This is mainly used for DisplayPort MST where
4643 * connectors have a topology and we want to allow userspace to give
4644 * them more meaningful names.
4645 *
4646 * Returns:
1a498633 4647 * Zero on success, negative errno on failure.
cc7096fb 4648 */
43aba7eb 4649int drm_mode_connector_set_path_property(struct drm_connector *connector,
12e6cecd 4650 const char *path)
43aba7eb
DA		 4651{
4652 struct drm_device *dev = connector->dev;
ecbbe59b 4653 int ret;
43aba7eb 4654
d2ed3436
DS		 4655 ret = drm_property_replace_global_blob(dev,
4656 &connector->path_blob_ptr,
4657 strlen(path) + 1,
4658 path,
4659 &connector->base,
4660 dev->mode_config.path_property);
43aba7eb
DA		 4661 return ret;
4662}
4663EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4664
6f134d7b
DA		 4665/**
4666 * drm_mode_connector_set_tile_property - set tile property on connector
4667 * @connector: connector to set property on.
4668 *
4669 * This looks up the tile information for a connector, and creates a
4670 * property for userspace to parse if it exists. The property is of
4671 * the form of 8 integers using ':' as a separator.
4672 *
4673 * Returns:
4674 * Zero on success, errno on failure.
4675 */
4676int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4677{
4678 struct drm_device *dev = connector->dev;
6f134d7b 4679 char tile[256];
d2ed3436 4680 int ret;
6f134d7b
DA		 4681
4682 if (!connector->has_tile) {
d2ed3436
DS		 4683 ret = drm_property_replace_global_blob(dev,
4684 &connector->tile_blob_ptr,
4685 0,
4686 NULL,
4687 &connector->base,
4688 dev->mode_config.tile_property);
6f134d7b
DA		 4689 return ret;
4690 }
4691
4692 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4693 connector->tile_group->id, connector->tile_is_single_monitor,
4694 connector->num_h_tile, connector->num_v_tile,
4695 connector->tile_h_loc, connector->tile_v_loc,
4696 connector->tile_h_size, connector->tile_v_size);
6f134d7b 4697
d2ed3436
DS		 4698 ret = drm_property_replace_global_blob(dev,
4699 &connector->tile_blob_ptr,
4700 strlen(tile) + 1,
4701 tile,
4702 &connector->base,
4703 dev->mode_config.tile_property);
6f134d7b
DA		 4704 return ret;
4705}
4706EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4707
c8e32cc1
DV		 4708/**
4709 * drm_mode_connector_update_edid_property - update the edid property of a connector
4710 * @connector: drm connector
4711 * @edid: new value of the edid property
4712 *
4713 * This function creates a new blob modeset object and assigns its id to the
4714 * connector's edid property.
4715 *
4716 * Returns:
1a498633 4717 * Zero on success, negative errno on failure.
c8e32cc1 4718 */
f453ba04 4719int drm_mode_connector_update_edid_property(struct drm_connector *connector,
12e6cecd 4720 const struct edid *edid)
f453ba04
DA		 4721{
4722 struct drm_device *dev = connector->dev;
d2ed3436 4723 size_t size = 0;
ecbbe59b 4724 int ret;
f453ba04 4725
4cf2b281
TW		 4726 /* ignore requests to set edid when overridden */
4727 if (connector->override_edid)
4728 return 0;
4729
d2ed3436 4730 if (edid)
e24ff467 4731 size = EDID_LENGTH * (1 + edid->extensions);
f453ba04 4732
d2ed3436
DS		 4733 ret = drm_property_replace_global_blob(dev,
4734 &connector->edid_blob_ptr,
4735 size,
4736 edid,
4737 &connector->base,
4738 dev->mode_config.edid_property);
f453ba04
DA		 4739 return ret;
4740}
4741EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4742
3843e71f
RC		 4743/* Some properties could refer to dynamic refcnt'd objects, or things that
4744 * need special locking to handle lifetime issues (ie. to ensure the prop
4745 * value doesn't become invalid part way through the property update due to
4746 * race). The value returned by reference via 'obj' should be passed back
4747 * to drm_property_change_valid_put() after the property is set (and the
4748 * object to which the property is attached has a chance to take it's own
4749 * reference).
4750 */
d34f20d6 4751bool drm_property_change_valid_get(struct drm_property *property,
3843e71f 4752 uint64_t value, struct drm_mode_object **ref)
26a34815 4753{
2ca651d1
TR		 4754 int i;
4755
26a34815
PZ		 4756 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4757 return false;
5ea22f24 4758
3843e71f
RC		 4759 *ref = NULL;
4760
5ea22f24 4761 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 4762 if (value < property->values[0] || value > property->values[1])
4763 return false;
4764 return true;
ebc44cf3
RC		 4765 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4766 int64_t svalue = U642I64(value);
4dfd909f 4767
ebc44cf3
RC		 4768 if (svalue < U642I64(property->values[0]) ||
4769 svalue > U642I64(property->values[1]))
4770 return false;
4771 return true;
5ea22f24 4772 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
592c20ee 4773 uint64_t valid_mask = 0;
4dfd909f 4774
49e27545
RC		 4775 for (i = 0; i < property->num_values; i++)
4776 valid_mask |= (1ULL << property->values[i]);
4777 return !(value & ~valid_mask);
5ea22f24 4778 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
6bcacf51
DS		 4779 struct drm_property_blob *blob;
4780
4781 if (value == 0)
4782 return true;
4783
4784 blob = drm_property_lookup_blob(property->dev, value);
4785 if (blob) {
4786 *ref = &blob->base;
4787 return true;
4788 } else {
4789 return false;
4790 }
98f75de4 4791 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
98f75de4
RC		 4792 /* a zero value for an object property translates to null: */
4793 if (value == 0)
4794 return true;
3843e71f
RC		 4795
4796 /* handle refcnt'd objects specially: */
4797 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4798 struct drm_framebuffer *fb;
4799 fb = drm_framebuffer_lookup(property->dev, value);
4800 if (fb) {
4801 *ref = &fb->base;
4802 return true;
4803 } else {
4804 return false;
4805 }
4806 } else {
4807 return _object_find(property->dev, value, property->values[0]) != NULL;
4808 }
26a34815 4809 }
2ca651d1
TR		 4810
4811 for (i = 0; i < property->num_values; i++)
4812 if (property->values[i] == value)
4813 return true;
4814 return false;
26a34815
PZ		 4815}
4816
d34f20d6 4817void drm_property_change_valid_put(struct drm_property *property,
3843e71f
RC		 4818 struct drm_mode_object *ref)
4819{
4820 if (!ref)
4821 return;
4822
4823 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4824 if (property->values[0] == DRM_MODE_OBJECT_FB)
4825 drm_framebuffer_unreference(obj_to_fb(ref));
da9b2a38
DS		 4826 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4827 drm_property_unreference_blob(obj_to_blob(ref));
3843e71f
RC		 4828}
4829
c8e32cc1
DV		 4830/**
4831 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4832 * @dev: DRM device
4833 * @data: ioctl data
4834 * @file_priv: DRM file info
4835 *
4836 * This function sets the current value for a connectors's property. It also
4837 * calls into a driver's ->set_property callback to update the hardware state
4838 *
4839 * Called by the user via ioctl.
4840 *
4841 * Returns:
1a498633 4842 * Zero on success, negative errno on failure.
c8e32cc1 4843 */
f453ba04
DA		 4844int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4845 void *data, struct drm_file *file_priv)
4846{
0057d8dd
PZ		 4847 struct drm_mode_connector_set_property *conn_set_prop = data;
4848 struct drm_mode_obj_set_property obj_set_prop = {
4849 .value = conn_set_prop->value,
4850 .prop_id = conn_set_prop->prop_id,
4851 .obj_id = conn_set_prop->connector_id,
4852 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4853 };
fb3b06c8 4854
0057d8dd
PZ		 4855 /* It does all the locking and checking we need */
4856 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 4857}
4858
c543188a
PZ		 4859static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4860 struct drm_property *property,
4861 uint64_t value)
4862{
4863 int ret = -EINVAL;
4864 struct drm_connector *connector = obj_to_connector(obj);
4865
4866 /* Do DPMS ourselves */
4867 if (property == connector->dev->mode_config.dpms_property) {
4868 if (connector->funcs->dpms)
4869 (*connector->funcs->dpms)(connector, (int)value);
4870 ret = 0;
4871 } else if (connector->funcs->set_property)
4872 ret = connector->funcs->set_property(connector, property, value);
4873
4874 /* store the property value if successful */
4875 if (!ret)
58495563 4876 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 4877 return ret;
4878}
4879
bffd9de0
PZ		 4880static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4881 struct drm_property *property,
4882 uint64_t value)
4883{
4884 int ret = -EINVAL;
4885 struct drm_crtc *crtc = obj_to_crtc(obj);
4886
4887 if (crtc->funcs->set_property)
4888 ret = crtc->funcs->set_property(crtc, property, value);
4889 if (!ret)
4890 drm_object_property_set_value(obj, property, value);
4891
4892 return ret;
4893}
4894
3a5f87c2
TW		 4895/**
4896 * drm_mode_plane_set_obj_prop - set the value of a property
4897 * @plane: drm plane object to set property value for
4898 * @property: property to set
4899 * @value: value the property should be set to
4900 *
4901 * This functions sets a given property on a given plane object. This function
4902 * calls the driver's ->set_property callback and changes the software state of
4903 * the property if the callback succeeds.
4904 *
4905 * Returns:
4906 * Zero on success, error code on failure.
4907 */
4908int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4909 struct drm_property *property,
4910 uint64_t value)
4d93914a
RC		 4911{
4912 int ret = -EINVAL;
3a5f87c2 4913 struct drm_mode_object *obj = &plane->base;
4d93914a
RC		 4914
4915 if (plane->funcs->set_property)
4916 ret = plane->funcs->set_property(plane, property, value);
4917 if (!ret)
4918 drm_object_property_set_value(obj, property, value);
4919
4920 return ret;
4921}
3a5f87c2 4922EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4d93914a 4923
c8e32cc1 4924/**
1a498633 4925 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
c8e32cc1
DV		 4926 * @dev: DRM device
4927 * @data: ioctl data
4928 * @file_priv: DRM file info
4929 *
4930 * This function retrieves the current value for an object's property. Compared
4931 * to the connector specific ioctl this one is extended to also work on crtc and
4932 * 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_get_properties_ioctl(struct drm_device *dev, void *data,
4940 struct drm_file *file_priv)
4941{
4942 struct drm_mode_obj_get_properties *arg = data;
4943 struct drm_mode_object *obj;
4944 int ret = 0;
c543188a
PZ		 4945
4946 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4947 return -EINVAL;
4948
84849903 4949 drm_modeset_lock_all(dev);
c543188a
PZ		 4950
4951 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4952 if (!obj) {
f27657f2 4953 ret = -ENOENT;
c543188a
PZ		 4954 goto out;
4955 }
4956 if (!obj->properties) {
4957 ret = -EINVAL;
4958 goto out;
4959 }
4960
88a48e29 4961 ret = get_properties(obj, file_priv->atomic,
95cbf110
RC		 4962 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4963 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4964 &arg->count_props);
c543188a 4965
c543188a 4966out:
84849903 4967 drm_modeset_unlock_all(dev);
c543188a
PZ		 4968 return ret;
4969}
4970
c8e32cc1
DV		 4971/**
4972 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4973 * @dev: DRM device
4974 * @data: ioctl data
4975 * @file_priv: DRM file info
4976 *
4977 * This function sets the current value for an object's property. It also calls
4978 * into a driver's ->set_property callback to update the hardware state.
4979 * Compared to the connector specific ioctl this one is extended to also work on
4980 * crtc and plane objects.
4981 *
4982 * Called by the user via ioctl.
4983 *
4984 * Returns:
1a498633 4985 * Zero on success, negative errno on failure.
c8e32cc1 4986 */
c543188a
PZ		 4987int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4988 struct drm_file *file_priv)
4989{
4990 struct drm_mode_obj_set_property *arg = data;
4991 struct drm_mode_object *arg_obj;
4992 struct drm_mode_object *prop_obj;
4993 struct drm_property *property;
3843e71f
RC		 4994 int i, ret = -EINVAL;
4995 struct drm_mode_object *ref;
c543188a
PZ		 4996
4997 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4998 return -EINVAL;
4999
84849903 5000 drm_modeset_lock_all(dev);
c543188a
PZ		 5001
5002 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 5003 if (!arg_obj) {
5004 ret = -ENOENT;
c543188a 5005 goto out;
f27657f2 5006 }
c543188a
PZ		 5007 if (!arg_obj->properties)
5008 goto out;
5009
7f88a9be 5010 for (i = 0; i < arg_obj->properties->count; i++)
b17cd757 5011 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
c543188a
PZ		 5012 break;
5013
7f88a9be 5014 if (i == arg_obj->properties->count)
c543188a
PZ		 5015 goto out;
5016
5017 prop_obj = drm_mode_object_find(dev, arg->prop_id,
5018 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 5019 if (!prop_obj) {
5020 ret = -ENOENT;
c543188a 5021 goto out;
f27657f2 5022 }
c543188a
PZ		 5023 property = obj_to_property(prop_obj);
5024
3843e71f 5025 if (!drm_property_change_valid_get(property, arg->value, &ref))
c543188a
PZ		 5026 goto out;
5027
5028 switch (arg_obj->type) {
5029 case DRM_MODE_OBJECT_CONNECTOR:
5030 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
5031 arg->value);
5032 break;
bffd9de0
PZ		 5033 case DRM_MODE_OBJECT_CRTC:
5034 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
5035 break;
4d93914a 5036 case DRM_MODE_OBJECT_PLANE:
3a5f87c2
TW		 5037 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
5038 property, arg->value);
4d93914a 5039 break;
c543188a
PZ		 5040 }
5041
3843e71f
RC		 5042 drm_property_change_valid_put(property, ref);
5043
c543188a 5044out:
84849903 5045 drm_modeset_unlock_all(dev);
c543188a
PZ		 5046 return ret;
5047}
5048
c8e32cc1
DV		 5049/**
5050 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5051 * @connector: connector to attach
5052 * @encoder: encoder to attach @connector to
5053 *
5054 * This function links up a connector to an encoder. Note that the routing
5055 * restrictions between encoders and crtcs are exposed to userspace through the
5056 * possible_clones and possible_crtcs bitmasks.
5057 *
5058 * Returns:
1a498633 5059 * Zero on success, negative errno on failure.
c8e32cc1 5060 */
f453ba04
DA		 5061int drm_mode_connector_attach_encoder(struct drm_connector *connector,
5062 struct drm_encoder *encoder)
5063{
5064 int i;
5065
5066 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5067 if (connector->encoder_ids[i] == 0) {
5068 connector->encoder_ids[i] = encoder->base.id;
5069 return 0;
5070 }
5071 }
5072 return -ENOMEM;
5073}
5074EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5075
c8e32cc1
DV		 5076/**
5077 * drm_mode_crtc_set_gamma_size - set the gamma table size
5078 * @crtc: CRTC to set the gamma table size for
5079 * @gamma_size: size of the gamma table
5080 *
5081 * Drivers which support gamma tables should set this to the supported gamma
5082 * table size when initializing the CRTC. Currently the drm core only supports a
5083 * fixed gamma table size.
5084 *
5085 * Returns:
1a498633 5086 * Zero on success, negative errno on failure.
c8e32cc1 5087 */
4cae5b84 5088int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 5089 int gamma_size)
f453ba04
DA		 5090{
5091 crtc->gamma_size = gamma_size;
5092
bd3f0ff9
TR		 5093 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5094 GFP_KERNEL);
f453ba04
DA		 5095 if (!crtc->gamma_store) {
5096 crtc->gamma_size = 0;
4cae5b84 5097 return -ENOMEM;
f453ba04
DA		 5098 }
5099
4cae5b84 5100 return 0;
f453ba04
DA		 5101}
5102EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5103
c8e32cc1
DV		 5104/**
5105 * drm_mode_gamma_set_ioctl - set the gamma table
5106 * @dev: DRM device
5107 * @data: ioctl data
5108 * @file_priv: DRM file info
5109 *
5110 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5111 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5112 *
5113 * Called by the user via ioctl.
5114 *
5115 * Returns:
1a498633 5116 * Zero on success, negative errno on failure.
c8e32cc1 5117 */
f453ba04
DA		 5118int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5119 void *data, struct drm_file *file_priv)
5120{
5121 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 5122 struct drm_crtc *crtc;
5123 void *r_base, *g_base, *b_base;
5124 int size;
5125 int ret = 0;
5126
fb3b06c8
DA		 5127 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5128 return -EINVAL;
5129
84849903 5130 drm_modeset_lock_all(dev);
a2b34e22
RC		 5131 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5132 if (!crtc) {
f27657f2 5133 ret = -ENOENT;
f453ba04
DA		 5134 goto out;
5135 }
f453ba04 5136
ebe0f244
LP		 5137 if (crtc->funcs->gamma_set == NULL) {
5138 ret = -ENOSYS;
5139 goto out;
5140 }
5141
f453ba04
DA		 5142 /* memcpy into gamma store */
5143 if (crtc_lut->gamma_size != crtc->gamma_size) {
5144 ret = -EINVAL;
5145 goto out;
5146 }
5147
5148 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5149 r_base = crtc->gamma_store;
5150 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5151 ret = -EFAULT;
5152 goto out;
5153 }
5154
5155 g_base = r_base + size;
5156 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5157 ret = -EFAULT;
5158 goto out;
5159 }
5160
5161 b_base = g_base + size;
5162 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5163 ret = -EFAULT;
5164 goto out;
5165 }
5166
7203425a 5167 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 5168
5169out:
84849903 5170 drm_modeset_unlock_all(dev);
f453ba04
DA		 5171 return ret;
5172
5173}
5174
c8e32cc1
DV		 5175/**
5176 * drm_mode_gamma_get_ioctl - get the gamma table
5177 * @dev: DRM device
5178 * @data: ioctl data
5179 * @file_priv: DRM file info
5180 *
5181 * Copy the current gamma table into the storage provided. This also provides
5182 * the gamma table size the driver expects, which can be used to size the
5183 * allocated storage.
5184 *
5185 * Called by the user via ioctl.
5186 *
5187 * Returns:
1a498633 5188 * Zero on success, negative errno on failure.
c8e32cc1 5189 */
f453ba04
DA		 5190int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5191 void *data, struct drm_file *file_priv)
5192{
5193 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 5194 struct drm_crtc *crtc;
5195 void *r_base, *g_base, *b_base;
5196 int size;
5197 int ret = 0;
5198
fb3b06c8
DA		 5199 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5200 return -EINVAL;
5201
84849903 5202 drm_modeset_lock_all(dev);
a2b34e22
RC		 5203 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5204 if (!crtc) {
f27657f2 5205 ret = -ENOENT;
f453ba04
DA		 5206 goto out;
5207 }
f453ba04
DA		 5208
5209 /* memcpy into gamma store */
5210 if (crtc_lut->gamma_size != crtc->gamma_size) {
5211 ret = -EINVAL;
5212 goto out;
5213 }
5214
5215 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5216 r_base = crtc->gamma_store;
5217 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5218 ret = -EFAULT;
5219 goto out;
5220 }
5221
5222 g_base = r_base + size;
5223 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5224 ret = -EFAULT;
5225 goto out;
5226 }
5227
5228 b_base = g_base + size;
5229 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5230 ret = -EFAULT;
5231 goto out;
5232 }
5233out:
84849903 5234 drm_modeset_unlock_all(dev);
f453ba04
DA		 5235 return ret;
5236}
d91d8a3f 5237
c8e32cc1
DV		 5238/**
5239 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5240 * @dev: DRM device
5241 * @data: ioctl data
5242 * @file_priv: DRM file info
5243 *
5244 * This schedules an asynchronous update on a given CRTC, called page flip.
5245 * Optionally a drm event is generated to signal the completion of the event.
5246 * Generic drivers cannot assume that a pageflip with changed framebuffer
5247 * properties (including driver specific metadata like tiling layout) will work,
5248 * but some drivers support e.g. pixel format changes through the pageflip
5249 * ioctl.
5250 *
5251 * Called by the user via ioctl.
5252 *
5253 * Returns:
1a498633 5254 * Zero on success, negative errno on failure.
c8e32cc1 5255 */
d91d8a3f
KH		 5256int drm_mode_page_flip_ioctl(struct drm_device *dev,
5257 void *data, struct drm_file *file_priv)
5258{
5259 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 5260 struct drm_crtc *crtc;
3d30a59b 5261 struct drm_framebuffer *fb = NULL;
d91d8a3f
KH		 5262 struct drm_pending_vblank_event *e = NULL;
5263 unsigned long flags;
5264 int ret = -EINVAL;
5265
5266 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5267 page_flip->reserved != 0)
5268 return -EINVAL;
5269
62f2104f
KP		 5270 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5271 return -EINVAL;
5272
a2b34e22
RC		 5273 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5274 if (!crtc)
f27657f2 5275 return -ENOENT;
d91d8a3f 5276
4d02e2de 5277 drm_modeset_lock_crtc(crtc, crtc->primary);
f4510a27 5278 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 5279 /* The framebuffer is currently unbound, presumably
5280 * due to a hotplug event, that userspace has not
5281 * yet discovered.
5282 */
5283 ret = -EBUSY;
5284 goto out;
5285 }
5286
d91d8a3f
KH		 5287 if (crtc->funcs->page_flip == NULL)
5288 goto out;
5289
786b99ed 5290 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 5291 if (!fb) {
5292 ret = -ENOENT;
d91d8a3f 5293 goto out;
37c4e705 5294 }
d91d8a3f 5295
c11e9283
DL		 5296 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5297 if (ret)
5f61bb42 5298 goto out;
5f61bb42 5299
f4510a27 5300 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 5301 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5302 ret = -EINVAL;
5303 goto out;
5304 }
5305
d91d8a3f
KH		 5306 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5307 ret = -ENOMEM;
5308 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5309 if (file_priv->event_space < sizeof(e->event)) {
d91d8a3f
KH		 5310 spin_unlock_irqrestore(&dev->event_lock, flags);
5311 goto out;
5312 }
f76511b9 5313 file_priv->event_space -= sizeof(e->event);
d91d8a3f
KH		 5314 spin_unlock_irqrestore(&dev->event_lock, flags);
5315
f76511b9 5316 e = kzalloc(sizeof(*e), GFP_KERNEL);
d91d8a3f
KH		 5317 if (e == NULL) {
5318 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5319 file_priv->event_space += sizeof(e->event);
d91d8a3f
KH		 5320 spin_unlock_irqrestore(&dev->event_lock, flags);
5321 goto out;
5322 }
5323
7bd4d7be 5324 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
f76511b9 5325 e->event.base.length = sizeof(e->event);
d91d8a3f
KH		 5326 e->event.user_data = page_flip->user_data;
5327 e->base.event = &e->event.base;
5328 e->base.file_priv = file_priv;
5329 e->base.destroy =
5330 (void (*) (struct drm_pending_event *)) kfree;
5331 }
5332
3d30a59b 5333 crtc->primary->old_fb = crtc->primary->fb;
ed8d1975 5334 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 5335 if (ret) {
aef6a7ee
JS		 5336 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5337 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5338 file_priv->event_space += sizeof(e->event);
aef6a7ee
JS		 5339 spin_unlock_irqrestore(&dev->event_lock, flags);
5340 kfree(e);
5341 }
b0d12325 5342 /* Keep the old fb, don't unref it. */
3d30a59b 5343 crtc->primary->old_fb = NULL;
b0d12325 5344 } else {
8cf1e981
TR		 5345 /*
5346 * Warn if the driver hasn't properly updated the crtc->fb
5347 * field to reflect that the new framebuffer is now used.
5348 * Failing to do so will screw with the reference counting
5349 * on framebuffers.
5350 */
f4510a27 5351 WARN_ON(crtc->primary->fb != fb);
b0d12325
DV		 5352 /* Unref only the old framebuffer. */
5353 fb = NULL;
d91d8a3f
KH		 5354 }
5355
5356out:
b0d12325
DV		 5357 if (fb)
5358 drm_framebuffer_unreference(fb);
3d30a59b
DV		 5359 if (crtc->primary->old_fb)
5360 drm_framebuffer_unreference(crtc->primary->old_fb);
5361 crtc->primary->old_fb = NULL;
d059f652 5362 drm_modeset_unlock_crtc(crtc);
b4d5e7d1 5363
d91d8a3f
KH		 5364 return ret;
5365}
eb033556 5366
c8e32cc1
DV		 5367/**
5368 * drm_mode_config_reset - call ->reset callbacks
5369 * @dev: drm device
5370 *
5371 * This functions calls all the crtc's, encoder's and connector's ->reset
5372 * callback. Drivers can use this in e.g. their driver load or resume code to
5373 * reset hardware and software state.
5374 */
eb033556
CW		 5375void drm_mode_config_reset(struct drm_device *dev)
5376{
5377 struct drm_crtc *crtc;
2a0d7cfd 5378 struct drm_plane *plane;
eb033556
CW		 5379 struct drm_encoder *encoder;
5380 struct drm_connector *connector;
5381
e4f62546 5382 drm_for_each_plane(plane, dev)
2a0d7cfd
DV		 5383 if (plane->funcs->reset)
5384 plane->funcs->reset(plane);
5385
e4f62546 5386 drm_for_each_crtc(crtc, dev)
eb033556
CW		 5387 if (crtc->funcs->reset)
5388 crtc->funcs->reset(crtc);
5389
e4f62546 5390 drm_for_each_encoder(encoder, dev)
eb033556
CW		 5391 if (encoder->funcs->reset)
5392 encoder->funcs->reset(encoder);
5393
6295d607 5394 drm_for_each_connector(connector, dev) {
5e2cb2f6
DV		 5395 connector->status = connector_status_unknown;
5396
eb033556
CW		 5397 if (connector->funcs->reset)
5398 connector->funcs->reset(connector);
5e2cb2f6 5399 }
eb033556
CW		 5400}
5401EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 5402
c8e32cc1
DV		 5403/**
5404 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5405 * @dev: DRM device
5406 * @data: ioctl data
5407 * @file_priv: DRM file info
5408 *
5409 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5410 * TTM or something else entirely) and returns the resulting buffer handle. This
5411 * handle can then be wrapped up into a framebuffer modeset object.
5412 *
5413 * Note that userspace is not allowed to use such objects for render
5414 * acceleration - drivers must create their own private ioctls for such a use
5415 * case.
5416 *
5417 * Called by the user via ioctl.
5418 *
5419 * Returns:
1a498633 5420 * Zero on success, negative errno on failure.
c8e32cc1 5421 */
ff72145b
DA		 5422int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5423 void *data, struct drm_file *file_priv)
5424{
5425 struct drm_mode_create_dumb *args = data;
b28cd41f 5426 u32 cpp, stride, size;
ff72145b
DA		 5427
5428 if (!dev->driver->dumb_create)
5429 return -ENOSYS;
b28cd41f
DH		 5430 if (!args->width || !args->height || !args->bpp)
5431 return -EINVAL;
5432
5433 /* overflow checks for 32bit size calculations */
00e72089 5434 /* NOTE: DIV_ROUND_UP() can overflow */
b28cd41f 5435 cpp = DIV_ROUND_UP(args->bpp, 8);
00e72089 5436 if (!cpp || cpp > 0xffffffffU / args->width)
b28cd41f
DH		 5437 return -EINVAL;
5438 stride = cpp * args->width;
5439 if (args->height > 0xffffffffU / stride)
5440 return -EINVAL;
5441
5442 /* test for wrap-around */
5443 size = args->height * stride;
5444 if (PAGE_ALIGN(size) == 0)
5445 return -EINVAL;
5446
f6085952
TR		 5447 /*
5448 * handle, pitch and size are output parameters. Zero them out to
5449 * prevent drivers from accidentally using uninitialized data. Since
5450 * not all existing userspace is clearing these fields properly we
5451 * cannot reject IOCTL with garbage in them.
5452 */
5453 args->handle = 0;
5454 args->pitch = 0;
5455 args->size = 0;
5456
ff72145b
DA		 5457 return dev->driver->dumb_create(file_priv, dev, args);
5458}
5459
c8e32cc1
DV		 5460/**
5461 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5462 * @dev: DRM device
5463 * @data: ioctl data
5464 * @file_priv: DRM file info
5465 *
5466 * Allocate an offset in the drm device node's address space to be able to
5467 * memory map a dumb buffer.
5468 *
5469 * Called by the user via ioctl.
5470 *
5471 * Returns:
1a498633 5472 * Zero on success, negative errno on failure.
c8e32cc1 5473 */
ff72145b
DA		 5474int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5475 void *data, struct drm_file *file_priv)
5476{
5477 struct drm_mode_map_dumb *args = data;
5478
5479 /* call driver ioctl to get mmap offset */
5480 if (!dev->driver->dumb_map_offset)
5481 return -ENOSYS;
5482
5483 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5484}
5485
c8e32cc1
DV		 5486/**
5487 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5488 * @dev: DRM device
5489 * @data: ioctl data
5490 * @file_priv: DRM file info
5491 *
5492 * This destroys the userspace handle for the given dumb backing storage buffer.
5493 * Since buffer objects must be reference counted in the kernel a buffer object
5494 * won't be immediately freed if a framebuffer modeset object still uses it.
5495 *
5496 * Called by the user via ioctl.
5497 *
5498 * Returns:
1a498633 5499 * Zero on success, negative errno on failure.
c8e32cc1 5500 */
ff72145b
DA		 5501int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5502 void *data, struct drm_file *file_priv)
5503{
5504 struct drm_mode_destroy_dumb *args = data;
5505
5506 if (!dev->driver->dumb_destroy)
5507 return -ENOSYS;
5508
5509 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5510}
248dbc23 5511
c8e32cc1
DV		 5512/**
5513 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5514 * @format: pixel format (DRM_FORMAT_*)
5515 * @depth: storage for the depth value
5516 * @bpp: storage for the bpp value
5517 *
5518 * This only supports RGB formats here for compat with code that doesn't use
5519 * pixel formats directly yet.
248dbc23
DA		 5520 */
5521void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5522 int *bpp)
5523{
5524 switch (format) {
c51a6bc5 5525 case DRM_FORMAT_C8:
04b3924d
VS		 5526 case DRM_FORMAT_RGB332:
5527 case DRM_FORMAT_BGR233:
248dbc23
DA		 5528 *depth = 8;
5529 *bpp = 8;
5530 break;
04b3924d
VS		 5531 case DRM_FORMAT_XRGB1555:
5532 case DRM_FORMAT_XBGR1555:
5533 case DRM_FORMAT_RGBX5551:
5534 case DRM_FORMAT_BGRX5551:
5535 case DRM_FORMAT_ARGB1555:
5536 case DRM_FORMAT_ABGR1555:
5537 case DRM_FORMAT_RGBA5551:
5538 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 5539 *depth = 15;
5540 *bpp = 16;
5541 break;
04b3924d
VS		 5542 case DRM_FORMAT_RGB565:
5543 case DRM_FORMAT_BGR565:
248dbc23
DA		 5544 *depth = 16;
5545 *bpp = 16;
5546 break;
04b3924d
VS		 5547 case DRM_FORMAT_RGB888:
5548 case DRM_FORMAT_BGR888:
5549 *depth = 24;
5550 *bpp = 24;
5551 break;
5552 case DRM_FORMAT_XRGB8888:
5553 case DRM_FORMAT_XBGR8888:
5554 case DRM_FORMAT_RGBX8888:
5555 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 5556 *depth = 24;
5557 *bpp = 32;
5558 break;
04b3924d
VS		 5559 case DRM_FORMAT_XRGB2101010:
5560 case DRM_FORMAT_XBGR2101010:
5561 case DRM_FORMAT_RGBX1010102:
5562 case DRM_FORMAT_BGRX1010102:
5563 case DRM_FORMAT_ARGB2101010:
5564 case DRM_FORMAT_ABGR2101010:
5565 case DRM_FORMAT_RGBA1010102:
5566 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 5567 *depth = 30;
5568 *bpp = 32;
5569 break;
04b3924d
VS		 5570 case DRM_FORMAT_ARGB8888:
5571 case DRM_FORMAT_ABGR8888:
5572 case DRM_FORMAT_RGBA8888:
5573 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 5574 *depth = 32;
5575 *bpp = 32;
5576 break;
5577 default:
23c453a4
VS		 5578 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5579 drm_get_format_name(format));
248dbc23
DA		 5580 *depth = 0;
5581 *bpp = 0;
5582 break;
5583 }
5584}
5585EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 5586
5587/**
5588 * drm_format_num_planes - get the number of planes for format
5589 * @format: pixel format (DRM_FORMAT_*)
5590 *
c8e32cc1 5591 * Returns:
141670e9
VS		 5592 * The number of planes used by the specified pixel format.
5593 */
5594int drm_format_num_planes(uint32_t format)
5595{
5596 switch (format) {
5597 case DRM_FORMAT_YUV410:
5598 case DRM_FORMAT_YVU410:
5599 case DRM_FORMAT_YUV411:
5600 case DRM_FORMAT_YVU411:
5601 case DRM_FORMAT_YUV420:
5602 case DRM_FORMAT_YVU420:
5603 case DRM_FORMAT_YUV422:
5604 case DRM_FORMAT_YVU422:
5605 case DRM_FORMAT_YUV444:
5606 case DRM_FORMAT_YVU444:
5607 return 3;
5608 case DRM_FORMAT_NV12:
5609 case DRM_FORMAT_NV21:
5610 case DRM_FORMAT_NV16:
5611 case DRM_FORMAT_NV61:
ba623f6a
LP		 5612 case DRM_FORMAT_NV24:
5613 case DRM_FORMAT_NV42:
141670e9
VS		 5614 return 2;
5615 default:
5616 return 1;
5617 }
5618}
5619EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 5620
5621/**
5622 * drm_format_plane_cpp - determine the bytes per pixel value
5623 * @format: pixel format (DRM_FORMAT_*)
5624 * @plane: plane index
5625 *
c8e32cc1 5626 * Returns:
5a86bd55
VS		 5627 * The bytes per pixel value for the specified plane.
5628 */
5629int drm_format_plane_cpp(uint32_t format, int plane)
5630{
5631 unsigned int depth;
5632 int bpp;
5633
5634 if (plane >= drm_format_num_planes(format))
5635 return 0;
5636
5637 switch (format) {
5638 case DRM_FORMAT_YUYV:
5639 case DRM_FORMAT_YVYU:
5640 case DRM_FORMAT_UYVY:
5641 case DRM_FORMAT_VYUY:
5642 return 2;
5643 case DRM_FORMAT_NV12:
5644 case DRM_FORMAT_NV21:
5645 case DRM_FORMAT_NV16:
5646 case DRM_FORMAT_NV61:
ba623f6a
LP		 5647 case DRM_FORMAT_NV24:
5648 case DRM_FORMAT_NV42:
5a86bd55
VS		 5649 return plane ? 2 : 1;
5650 case DRM_FORMAT_YUV410:
5651 case DRM_FORMAT_YVU410:
5652 case DRM_FORMAT_YUV411:
5653 case DRM_FORMAT_YVU411:
5654 case DRM_FORMAT_YUV420:
5655 case DRM_FORMAT_YVU420:
5656 case DRM_FORMAT_YUV422:
5657 case DRM_FORMAT_YVU422:
5658 case DRM_FORMAT_YUV444:
5659 case DRM_FORMAT_YVU444:
5660 return 1;
5661 default:
5662 drm_fb_get_bpp_depth(format, &depth, &bpp);
5663 return bpp >> 3;
5664 }
5665}
5666EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 5667
5668/**
5669 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5670 * @format: pixel format (DRM_FORMAT_*)
5671 *
c8e32cc1 5672 * Returns:
01b68b04
VS		 5673 * The horizontal chroma subsampling factor for the
5674 * specified pixel format.
5675 */
5676int drm_format_horz_chroma_subsampling(uint32_t format)
5677{
5678 switch (format) {
5679 case DRM_FORMAT_YUV411:
5680 case DRM_FORMAT_YVU411:
5681 case DRM_FORMAT_YUV410:
5682 case DRM_FORMAT_YVU410:
5683 return 4;
5684 case DRM_FORMAT_YUYV:
5685 case DRM_FORMAT_YVYU:
5686 case DRM_FORMAT_UYVY:
5687 case DRM_FORMAT_VYUY:
5688 case DRM_FORMAT_NV12:
5689 case DRM_FORMAT_NV21:
5690 case DRM_FORMAT_NV16:
5691 case DRM_FORMAT_NV61:
5692 case DRM_FORMAT_YUV422:
5693 case DRM_FORMAT_YVU422:
5694 case DRM_FORMAT_YUV420:
5695 case DRM_FORMAT_YVU420:
5696 return 2;
5697 default:
5698 return 1;
5699 }
5700}
5701EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5702
5703/**
5704 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5705 * @format: pixel format (DRM_FORMAT_*)
5706 *
c8e32cc1 5707 * Returns:
01b68b04
VS		 5708 * The vertical chroma subsampling factor for the
5709 * specified pixel format.
5710 */
5711int drm_format_vert_chroma_subsampling(uint32_t format)
5712{
5713 switch (format) {
5714 case DRM_FORMAT_YUV410:
5715 case DRM_FORMAT_YVU410:
5716 return 4;
5717 case DRM_FORMAT_YUV420:
5718 case DRM_FORMAT_YVU420:
5719 case DRM_FORMAT_NV12:
5720 case DRM_FORMAT_NV21:
5721 return 2;
5722 default:
5723 return 1;
5724 }
5725}
5726EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3 5727
3c9855f6
VS		 5728/**
5729 * drm_rotation_simplify() - Try to simplify the rotation
5730 * @rotation: Rotation to be simplified
5731 * @supported_rotations: Supported rotations
5732 *
5733 * Attempt to simplify the rotation to a form that is supported.
5734 * Eg. if the hardware supports everything except DRM_REFLECT_X
5735 * one could call this function like this:
5736 *
5737 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5738 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5739 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5740 *
5741 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5742 * transforms the hardware supports, this function may not
5743 * be able to produce a supported transform, so the caller should
5744 * check the result afterwards.
5745 */
5746unsigned int drm_rotation_simplify(unsigned int rotation,
5747 unsigned int supported_rotations)
5748{
5749 if (rotation & ~supported_rotations) {
5750 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5751 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5752 }
5753
5754 return rotation;
5755}
5756EXPORT_SYMBOL(drm_rotation_simplify);
5757
87d24fc3
LP		 5758/**
5759 * drm_mode_config_init - initialize DRM mode_configuration structure
5760 * @dev: DRM device
5761 *
5762 * Initialize @dev's mode_config structure, used for tracking the graphics
5763 * configuration of @dev.
5764 *
5765 * Since this initializes the modeset locks, no locking is possible. Which is no
5766 * problem, since this should happen single threaded at init time. It is the
5767 * driver's problem to ensure this guarantee.
5768 *
5769 */
5770void drm_mode_config_init(struct drm_device *dev)
5771{
5772 mutex_init(&dev->mode_config.mutex);
51fd371b 5773 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5774 mutex_init(&dev->mode_config.idr_mutex);
5775 mutex_init(&dev->mode_config.fb_lock);
8fb6e7a5 5776 mutex_init(&dev->mode_config.blob_lock);
87d24fc3
LP		 5777 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5778 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5779 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5780 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5781 INIT_LIST_HEAD(&dev->mode_config.property_list);
5782 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5783 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5784 idr_init(&dev->mode_config.crtc_idr);
138f9ebb 5785 idr_init(&dev->mode_config.tile_idr);
87d24fc3
LP		 5786
5787 drm_modeset_lock_all(dev);
6b4959f4 5788 drm_mode_create_standard_properties(dev);
87d24fc3
LP		 5789 drm_modeset_unlock_all(dev);
5790
5791 /* Just to be sure */
5792 dev->mode_config.num_fb = 0;
5793 dev->mode_config.num_connector = 0;
5794 dev->mode_config.num_crtc = 0;
5795 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 5796 dev->mode_config.num_overlay_plane = 0;
5797 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 5798}
5799EXPORT_SYMBOL(drm_mode_config_init);
5800
5801/**
5802 * drm_mode_config_cleanup - free up DRM mode_config info
5803 * @dev: DRM device
5804 *
5805 * Free up all the connectors and CRTCs associated with this DRM device, then
5806 * free up the framebuffers and associated buffer objects.
5807 *
5808 * Note that since this /should/ happen single-threaded at driver/device
5809 * teardown time, no locking is required. It's the driver's job to ensure that
5810 * this guarantee actually holds true.
5811 *
5812 * FIXME: cleanup any dangling user buffer objects too
5813 */
5814void drm_mode_config_cleanup(struct drm_device *dev)
5815{
5816 struct drm_connector *connector, *ot;
5817 struct drm_crtc *crtc, *ct;
5818 struct drm_encoder *encoder, *enct;
5819 struct drm_framebuffer *fb, *fbt;
5820 struct drm_property *property, *pt;
5821 struct drm_property_blob *blob, *bt;
5822 struct drm_plane *plane, *plt;
5823
5824 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5825 head) {
5826 encoder->funcs->destroy(encoder);
5827 }
5828
5829 list_for_each_entry_safe(connector, ot,
5830 &dev->mode_config.connector_list, head) {
5831 connector->funcs->destroy(connector);
5832 }
5833
5834 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5835 head) {
5836 drm_property_destroy(dev, property);
5837 }
5838
5839 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
e2f5d2ea 5840 head_global) {
6bcacf51 5841 drm_property_unreference_blob(blob);
87d24fc3
LP		 5842 }
5843
5844 /*
5845 * Single-threaded teardown context, so it's not required to grab the
5846 * fb_lock to protect against concurrent fb_list access. Contrary, it
5847 * would actually deadlock with the drm_framebuffer_cleanup function.
5848 *
5849 * Also, if there are any framebuffers left, that's a driver leak now,
5850 * so politely WARN about this.
5851 */
5852 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5853 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5854 drm_framebuffer_remove(fb);
5855 }
5856
5857 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5858 head) {
5859 plane->funcs->destroy(plane);
5860 }
5861
5862 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5863 crtc->funcs->destroy(crtc);
5864 }
5865
138f9ebb 5866 idr_destroy(&dev->mode_config.tile_idr);
87d24fc3 5867 idr_destroy(&dev->mode_config.crtc_idr);
51fd371b 5868 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5869}
5870EXPORT_SYMBOL(drm_mode_config_cleanup);
c1df5f3c
VS		 5871
5872struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5873 unsigned int supported_rotations)
5874{
5875 static const struct drm_prop_enum_list props[] = {
5876 { DRM_ROTATE_0, "rotate-0" },
5877 { DRM_ROTATE_90, "rotate-90" },
5878 { DRM_ROTATE_180, "rotate-180" },
5879 { DRM_ROTATE_270, "rotate-270" },
5880 { DRM_REFLECT_X, "reflect-x" },
5881 { DRM_REFLECT_Y, "reflect-y" },
5882 };
5883
5884 return drm_property_create_bitmask(dev, 0, "rotation",
5885 props, ARRAY_SIZE(props),
5886 supported_rotations);
5887}
5888EXPORT_SYMBOL(drm_mode_create_rotation_property);
138f9ebb
DA		 5889
5890/**
5891 * DOC: Tile group
5892 *
5893 * Tile groups are used to represent tiled monitors with a unique
5894 * integer identifier. Tiled monitors using DisplayID v1.3 have
5895 * a unique 8-byte handle, we store this in a tile group, so we
5896 * have a common identifier for all tiles in a monitor group.
5897 */
5898static void drm_tile_group_free(struct kref *kref)
5899{
5900 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5901 struct drm_device *dev = tg->dev;
5902 mutex_lock(&dev->mode_config.idr_mutex);
5903 idr_remove(&dev->mode_config.tile_idr, tg->id);
5904 mutex_unlock(&dev->mode_config.idr_mutex);
5905 kfree(tg);
5906}
5907
5908/**
5909 * drm_mode_put_tile_group - drop a reference to a tile group.
5910 * @dev: DRM device
5911 * @tg: tile group to drop reference to.
5912 *
5913 * drop reference to tile group and free if 0.
5914 */
5915void drm_mode_put_tile_group(struct drm_device *dev,
5916 struct drm_tile_group *tg)
5917{
5918 kref_put(&tg->refcount, drm_tile_group_free);
5919}
5920
5921/**
5922 * drm_mode_get_tile_group - get a reference to an existing tile group
5923 * @dev: DRM device
5924 * @topology: 8-bytes unique per monitor.
5925 *
5926 * Use the unique bytes to get a reference to an existing tile group.
5927 *
5928 * RETURNS:
5929 * tile group or NULL if not found.
5930 */
5931struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5932 char topology[8])
5933{
5934 struct drm_tile_group *tg;
5935 int id;
5936 mutex_lock(&dev->mode_config.idr_mutex);
5937 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5938 if (!memcmp(tg->group_data, topology, 8)) {
5939 if (!kref_get_unless_zero(&tg->refcount))
5940 tg = NULL;
5941 mutex_unlock(&dev->mode_config.idr_mutex);
5942 return tg;
5943 }
5944 }
5945 mutex_unlock(&dev->mode_config.idr_mutex);
5946 return NULL;
5947}
81ddd1bc 5948EXPORT_SYMBOL(drm_mode_get_tile_group);
138f9ebb
DA		 5949
5950/**
5951 * drm_mode_create_tile_group - create a tile group from a displayid description
5952 * @dev: DRM device
5953 * @topology: 8-bytes unique per monitor.
5954 *
5955 * Create a tile group for the unique monitor, and get a unique
5956 * identifier for the tile group.
5957 *
5958 * RETURNS:
5959 * new tile group or error.
5960 */
5961struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5962 char topology[8])
5963{
5964 struct drm_tile_group *tg;
5965 int ret;
5966
5967 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5968 if (!tg)
5969 return ERR_PTR(-ENOMEM);
5970
5971 kref_init(&tg->refcount);
5972 memcpy(tg->group_data, topology, 8);
5973 tg->dev = dev;
5974
5975 mutex_lock(&dev->mode_config.idr_mutex);
5976 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5977 if (ret >= 0) {
5978 tg->id = ret;
5979 } else {
5980 kfree(tg);
5981 tg = ERR_PTR(ret);
5982 }
5983
5984 mutex_unlock(&dev->mode_config.idr_mutex);
5985 return tg;
5986}
81ddd1bc 5987EXPORT_SYMBOL(drm_mode_create_tile_group);
Linux kernel - Deliverables
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