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drm/i915: Update DRIVER_DATE to 20141205
[linux-2.6-block.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>
f453ba04 41
8bd441b2 42#include "drm_crtc_internal.h"
67d0ec4e 43#include "drm_internal.h"
8bd441b2 44
c394c2b0
MR		 45static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
46 struct drm_mode_fb_cmd2 *r,
47 struct drm_file *file_priv);
48
f453ba04
DA		 49/* Avoid boilerplate. I'm tired of typing. */
50#define DRM_ENUM_NAME_FN(fnname, list) \
d20d3174 51 const char *fnname(int val) \
f453ba04
DA		 52 { \
53 int i; \
54 for (i = 0; i < ARRAY_SIZE(list); i++) { \
55 if (list[i].type == val) \
56 return list[i].name; \
57 } \
58 return "(unknown)"; \
59 }
60
61/*
62 * Global properties
63 */
d20d3174 64static const struct drm_prop_enum_list drm_dpms_enum_list[] =
f453ba04
DA		 65{ { DRM_MODE_DPMS_ON, "On" },
66 { DRM_MODE_DPMS_STANDBY, "Standby" },
67 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
68 { DRM_MODE_DPMS_OFF, "Off" }
69};
70
71DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
72
9922ab5a
RC		 73static const struct drm_prop_enum_list drm_plane_type_enum_list[] =
74{
75 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
78};
79
f453ba04
DA		 80/*
81 * Optional properties
82 */
d20d3174 83static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
f453ba04 84{
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 */
d20d3174 100static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
f453ba04
DA		 101{
102 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
103 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
104 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
105};
106
107DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
108
d20d3174 109static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
f453ba04
DA		 110{
111 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
112 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
113 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
114};
115
116DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
117 drm_dvi_i_subconnector_enum_list)
118
d20d3174 119static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
f453ba04
DA		 120{
121 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 125 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 126};
127
128DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
129
d20d3174 130static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
f453ba04
DA		 131{
132 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
133 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
134 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
135 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 136 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 137};
138
139DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
140 drm_tv_subconnector_enum_list)
141
d20d3174 142static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
884840aa
JB		 143 { DRM_MODE_DIRTY_OFF, "Off" },
144 { DRM_MODE_DIRTY_ON, "On" },
145 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
146};
147
f453ba04
DA		 148struct drm_conn_prop_enum_list {
149 int type;
d20d3174 150 const char *name;
b21e3afe 151 struct ida ida;
f453ba04
DA		 152};
153
154/*
155 * Connector and encoder types.
156 */
157static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
b21e3afe
IM		 158{ { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
159 { DRM_MODE_CONNECTOR_VGA, "VGA" },
160 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
161 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
162 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
163 { DRM_MODE_CONNECTOR_Composite, "Composite" },
164 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
165 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
166 { DRM_MODE_CONNECTOR_Component, "Component" },
167 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
168 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
169 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
170 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
171 { DRM_MODE_CONNECTOR_TV, "TV" },
172 { DRM_MODE_CONNECTOR_eDP, "eDP" },
173 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
b8923273 174 { DRM_MODE_CONNECTOR_DSI, "DSI" },
f453ba04
DA		 175};
176
d20d3174 177static const struct drm_prop_enum_list drm_encoder_enum_list[] =
f453ba04
DA		 178{ { DRM_MODE_ENCODER_NONE, "None" },
179 { DRM_MODE_ENCODER_DAC, "DAC" },
180 { DRM_MODE_ENCODER_TMDS, "TMDS" },
181 { DRM_MODE_ENCODER_LVDS, "LVDS" },
182 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 183 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
b8923273 184 { DRM_MODE_ENCODER_DSI, "DSI" },
182407a6 185 { DRM_MODE_ENCODER_DPMST, "DP MST" },
f453ba04
DA		 186};
187
ac1bb36c
JB		 188static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
189{
190 { SubPixelUnknown, "Unknown" },
191 { SubPixelHorizontalRGB, "Horizontal RGB" },
192 { SubPixelHorizontalBGR, "Horizontal BGR" },
193 { SubPixelVerticalRGB, "Vertical RGB" },
194 { SubPixelVerticalBGR, "Vertical BGR" },
195 { SubPixelNone, "None" },
196};
197
b21e3afe
IM		 198void drm_connector_ida_init(void)
199{
200 int i;
201
202 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
203 ida_init(&drm_connector_enum_list[i].ida);
204}
205
206void drm_connector_ida_destroy(void)
207{
208 int i;
209
210 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
211 ida_destroy(&drm_connector_enum_list[i].ida);
212}
213
c8e32cc1
DV		 214/**
215 * drm_get_connector_status_name - return a string for connector status
216 * @status: connector status to compute name of
217 *
218 * In contrast to the other drm_get_*_name functions this one here returns a
219 * const pointer and hence is threadsafe.
220 */
d20d3174 221const char *drm_get_connector_status_name(enum drm_connector_status status)
f453ba04
DA		 222{
223 if (status == connector_status_connected)
224 return "connected";
225 else if (status == connector_status_disconnected)
226 return "disconnected";
227 else
228 return "unknown";
229}
ed7951dc 230EXPORT_SYMBOL(drm_get_connector_status_name);
f453ba04 231
ac1bb36c
JB		 232/**
233 * drm_get_subpixel_order_name - return a string for a given subpixel enum
234 * @order: enum of subpixel_order
235 *
236 * Note you could abuse this and return something out of bounds, but that
237 * would be a caller error. No unscrubbed user data should make it here.
238 */
239const char *drm_get_subpixel_order_name(enum subpixel_order order)
240{
241 return drm_subpixel_enum_list[order].name;
242}
243EXPORT_SYMBOL(drm_get_subpixel_order_name);
244
6ba6d03e
VS		 245static char printable_char(int c)
246{
247 return isascii(c) && isprint(c) ? c : '?';
248}
249
c8e32cc1
DV		 250/**
251 * drm_get_format_name - return a string for drm fourcc format
252 * @format: format to compute name of
253 *
254 * Note that the buffer used by this function is globally shared and owned by
255 * the function itself.
256 *
257 * FIXME: This isn't really multithreading safe.
258 */
d20d3174 259const char *drm_get_format_name(uint32_t format)
6ba6d03e
VS		 260{
261 static char buf[32];
262
263 snprintf(buf, sizeof(buf),
264 "%c%c%c%c %s-endian (0x%08x)",
265 printable_char(format & 0xff),
266 printable_char((format >> 8) & 0xff),
267 printable_char((format >> 16) & 0xff),
268 printable_char((format >> 24) & 0x7f),
269 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
270 format);
271
272 return buf;
273}
274EXPORT_SYMBOL(drm_get_format_name);
275
2ee39452
DA		 276/*
277 * Internal function to assign a slot in the object idr and optionally
278 * register the object into the idr.
279 */
280static int drm_mode_object_get_reg(struct drm_device *dev,
281 struct drm_mode_object *obj,
282 uint32_t obj_type,
283 bool register_obj)
284{
285 int ret;
286
287 mutex_lock(&dev->mode_config.idr_mutex);
288 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
289 if (ret >= 0) {
290 /*
291 * Set up the object linking under the protection of the idr
292 * lock so that other users can't see inconsistent state.
293 */
294 obj->id = ret;
295 obj->type = obj_type;
296 }
297 mutex_unlock(&dev->mode_config.idr_mutex);
298
299 return ret < 0 ? ret : 0;
300}
301
f453ba04 302/**
065a50ed 303 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 304 * @dev: DRM device
065a50ed
DV		 305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
f453ba04 307 *
f453ba04 308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
c8e32cc1
DV		 309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
f453ba04 312 *
c8e32cc1 313 * Returns:
f453ba04
DA		 314 * New unique (relative to other objects in @dev) integer identifier for the
315 * object.
316 */
8bd441b2
DV		 317int drm_mode_object_get(struct drm_device *dev,
318 struct drm_mode_object *obj, uint32_t obj_type)
f453ba04 319{
2ee39452
DA		 320 return drm_mode_object_get_reg(dev, obj, obj_type, true);
321}
f453ba04 322
2ee39452
DA		 323static void drm_mode_object_register(struct drm_device *dev,
324 struct drm_mode_object *obj)
325{
ad2563c2 326 mutex_lock(&dev->mode_config.idr_mutex);
2ee39452 327 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
ad2563c2 328 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 329}
330
331/**
065a50ed 332 * drm_mode_object_put - free a modeset identifer
f453ba04 333 * @dev: DRM device
065a50ed 334 * @object: object to free
f453ba04 335 *
c8e32cc1
DV		 336 * Free @id from @dev's unique identifier pool. Note that despite the _get
337 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
338 * for reference counted modeset objects like framebuffers.
f453ba04 339 */
8bd441b2
DV		 340void drm_mode_object_put(struct drm_device *dev,
341 struct drm_mode_object *object)
f453ba04 342{
ad2563c2 343 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 344 idr_remove(&dev->mode_config.crtc_idr, object->id);
ad2563c2 345 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 346}
347
98f75de4
RC		 348static struct drm_mode_object *_object_find(struct drm_device *dev,
349 uint32_t id, uint32_t type)
350{
351 struct drm_mode_object *obj = NULL;
352
353 mutex_lock(&dev->mode_config.idr_mutex);
354 obj = idr_find(&dev->mode_config.crtc_idr, id);
168c02ec
DV		 355 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
356 obj = NULL;
357 if (obj && obj->id != id)
358 obj = NULL;
359 /* don't leak out unref'd fb's */
360 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
98f75de4
RC		 361 obj = NULL;
362 mutex_unlock(&dev->mode_config.idr_mutex);
363
364 return obj;
365}
366
786b99ed
DV		 367/**
368 * drm_mode_object_find - look up a drm object with static lifetime
369 * @dev: drm device
370 * @id: id of the mode object
371 * @type: type of the mode object
372 *
373 * Note that framebuffers cannot be looked up with this functions - since those
98f75de4
RC		 374 * are reference counted, they need special treatment. Even with
375 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
376 * rather than WARN_ON()).
786b99ed 377 */
7a9c9060
DV		 378struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
379 uint32_t id, uint32_t type)
f453ba04 380{
ad2563c2 381 struct drm_mode_object *obj = NULL;
f453ba04 382
786b99ed
DV		 383 /* Framebuffers are reference counted and need their own lookup
384 * function.*/
385 WARN_ON(type == DRM_MODE_OBJECT_FB);
98f75de4 386 obj = _object_find(dev, id, type);
f453ba04
DA		 387 return obj;
388}
389EXPORT_SYMBOL(drm_mode_object_find);
390
f453ba04
DA		 391/**
392 * drm_framebuffer_init - initialize a framebuffer
393 * @dev: DRM device
065a50ed
DV		 394 * @fb: framebuffer to be initialized
395 * @funcs: ... with these functions
f453ba04 396 *
f453ba04
DA		 397 * Allocates an ID for the framebuffer's parent mode object, sets its mode
398 * functions & device file and adds it to the master fd list.
399 *
4b096ac1
DV		 400 * IMPORTANT:
401 * This functions publishes the fb and makes it available for concurrent access
402 * by other users. Which means by this point the fb _must_ be fully set up -
403 * since all the fb attributes are invariant over its lifetime, no further
404 * locking but only correct reference counting is required.
405 *
c8e32cc1 406 * Returns:
af901ca1 407 * Zero on success, error code on failure.
f453ba04
DA		 408 */
409int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
410 const struct drm_framebuffer_funcs *funcs)
411{
412 int ret;
413
4b096ac1 414 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e 415 kref_init(&fb->refcount);
4b096ac1
DV		 416 INIT_LIST_HEAD(&fb->filp_head);
417 fb->dev = dev;
418 fb->funcs = funcs;
f7eff60e 419
f453ba04 420 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
6bfc56aa 421 if (ret)
4b096ac1 422 goto out;
f453ba04 423
f453ba04
DA		 424 dev->mode_config.num_fb++;
425 list_add(&fb->head, &dev->mode_config.fb_list);
4b096ac1
DV		 426out:
427 mutex_unlock(&dev->mode_config.fb_lock);
f453ba04
DA		 428
429 return 0;
430}
431EXPORT_SYMBOL(drm_framebuffer_init);
432
83f45fc3
DV		 433/* dev->mode_config.fb_lock must be held! */
434static void __drm_framebuffer_unregister(struct drm_device *dev,
435 struct drm_framebuffer *fb)
436{
437 mutex_lock(&dev->mode_config.idr_mutex);
438 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
439 mutex_unlock(&dev->mode_config.idr_mutex);
440
441 fb->base.id = 0;
442}
443
f7eff60e
RC		 444static void drm_framebuffer_free(struct kref *kref)
445{
446 struct drm_framebuffer *fb =
447 container_of(kref, struct drm_framebuffer, refcount);
83f45fc3
DV		 448 struct drm_device *dev = fb->dev;
449
450 /*
451 * The lookup idr holds a weak reference, which has not necessarily been
452 * removed at this point. Check for that.
453 */
454 mutex_lock(&dev->mode_config.fb_lock);
455 if (fb->base.id) {
456 /* Mark fb as reaped and drop idr ref. */
457 __drm_framebuffer_unregister(dev, fb);
458 }
459 mutex_unlock(&dev->mode_config.fb_lock);
460
f7eff60e
RC		 461 fb->funcs->destroy(fb);
462}
463
2b677e8c
DV		 464static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
465 uint32_t id)
466{
467 struct drm_mode_object *obj = NULL;
468 struct drm_framebuffer *fb;
469
470 mutex_lock(&dev->mode_config.idr_mutex);
471 obj = idr_find(&dev->mode_config.crtc_idr, id);
472 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
473 fb = NULL;
474 else
475 fb = obj_to_fb(obj);
476 mutex_unlock(&dev->mode_config.idr_mutex);
477
478 return fb;
479}
480
786b99ed
DV		 481/**
482 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
483 * @dev: drm device
484 * @id: id of the fb object
485 *
486 * If successful, this grabs an additional reference to the framebuffer -
487 * callers need to make sure to eventually unreference the returned framebuffer
c8e32cc1 488 * again, using @drm_framebuffer_unreference.
786b99ed
DV		 489 */
490struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
491 uint32_t id)
492{
786b99ed
DV		 493 struct drm_framebuffer *fb;
494
495 mutex_lock(&dev->mode_config.fb_lock);
2b677e8c 496 fb = __drm_framebuffer_lookup(dev, id);
83f45fc3
DV		 497 if (fb) {
498 if (!kref_get_unless_zero(&fb->refcount))
499 fb = NULL;
500 }
786b99ed
DV		 501 mutex_unlock(&dev->mode_config.fb_lock);
502
503 return fb;
504}
505EXPORT_SYMBOL(drm_framebuffer_lookup);
506
f7eff60e
RC		 507/**
508 * drm_framebuffer_unreference - unref a framebuffer
065a50ed
DV		 509 * @fb: framebuffer to unref
510 *
511 * This functions decrements the fb's refcount and frees it if it drops to zero.
f7eff60e
RC		 512 */
513void drm_framebuffer_unreference(struct drm_framebuffer *fb)
514{
8291272a 515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 516 kref_put(&fb->refcount, drm_framebuffer_free);
517}
518EXPORT_SYMBOL(drm_framebuffer_unreference);
519
520/**
521 * drm_framebuffer_reference - incr the fb refcnt
065a50ed 522 * @fb: framebuffer
c8e32cc1
DV		 523 *
524 * This functions increments the fb's refcount.
f7eff60e
RC		 525 */
526void drm_framebuffer_reference(struct drm_framebuffer *fb)
527{
8291272a 528 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 529 kref_get(&fb->refcount);
530}
531EXPORT_SYMBOL(drm_framebuffer_reference);
532
2b677e8c
DV		 533static void drm_framebuffer_free_bug(struct kref *kref)
534{
535 BUG();
536}
537
6c2a7532
DV		 538static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
539{
8291272a 540 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
6c2a7532
DV		 541 kref_put(&fb->refcount, drm_framebuffer_free_bug);
542}
543
36206361
DV		 544/**
545 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
546 * @fb: fb to unregister
547 *
548 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
549 * those used for fbdev. Note that the caller must hold a reference of it's own,
550 * i.e. the object may not be destroyed through this call (since it'll lead to a
551 * locking inversion).
552 */
553void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
554{
2b677e8c
DV		 555 struct drm_device *dev = fb->dev;
556
557 mutex_lock(&dev->mode_config.fb_lock);
558 /* Mark fb as reaped and drop idr ref. */
559 __drm_framebuffer_unregister(dev, fb);
560 mutex_unlock(&dev->mode_config.fb_lock);
36206361
DV		 561}
562EXPORT_SYMBOL(drm_framebuffer_unregister_private);
563
f453ba04
DA		 564/**
565 * drm_framebuffer_cleanup - remove a framebuffer object
566 * @fb: framebuffer to remove
567 *
c8e32cc1
DV		 568 * Cleanup framebuffer. This function is intended to be used from the drivers
569 * ->destroy callback. It can also be used to clean up driver private
570 * framebuffers embedded into a larger structure.
36206361
DV		 571 *
572 * Note that this function does not remove the fb from active usuage - if it is
573 * still used anywhere, hilarity can ensue since userspace could call getfb on
574 * the id and get back -EINVAL. Obviously no concern at driver unload time.
575 *
576 * Also, the framebuffer will not be removed from the lookup idr - for
577 * user-created framebuffers this will happen in in the rmfb ioctl. For
578 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
579 * drm_framebuffer_unregister_private.
f453ba04
DA		 580 */
581void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
f7eff60e
RC		 582{
583 struct drm_device *dev = fb->dev;
8faf6b18 584
4b096ac1 585 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e
RC		 586 list_del(&fb->head);
587 dev->mode_config.num_fb--;
4b096ac1 588 mutex_unlock(&dev->mode_config.fb_lock);
f7eff60e
RC		 589}
590EXPORT_SYMBOL(drm_framebuffer_cleanup);
591
592/**
593 * drm_framebuffer_remove - remove and unreference a framebuffer object
594 * @fb: framebuffer to remove
595 *
f7eff60e 596 * Scans all the CRTCs and planes in @dev's mode_config. If they're
36206361 597 * using @fb, removes it, setting it to NULL. Then drops the reference to the
b62584e3
DV		 598 * passed-in framebuffer. Might take the modeset locks.
599 *
600 * Note that this function optimizes the cleanup away if the caller holds the
601 * last reference to the framebuffer. It is also guaranteed to not take the
602 * modeset locks in this case.
f7eff60e
RC		 603 */
604void drm_framebuffer_remove(struct drm_framebuffer *fb)
f453ba04
DA		 605{
606 struct drm_device *dev = fb->dev;
607 struct drm_crtc *crtc;
8cf5c917 608 struct drm_plane *plane;
5ef5f72f
DA		 609 struct drm_mode_set set;
610 int ret;
f453ba04 611
4b096ac1 612 WARN_ON(!list_empty(&fb->filp_head));
8faf6b18 613
b62584e3
DV		 614 /*
615 * drm ABI mandates that we remove any deleted framebuffers from active
616 * useage. But since most sane clients only remove framebuffers they no
617 * longer need, try to optimize this away.
618 *
619 * Since we're holding a reference ourselves, observing a refcount of 1
620 * means that we're the last holder and can skip it. Also, the refcount
621 * can never increase from 1 again, so we don't need any barriers or
622 * locks.
623 *
624 * Note that userspace could try to race with use and instate a new
625 * usage _after_ we've cleared all current ones. End result will be an
626 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
627 * in this manner.
628 */
629 if (atomic_read(&fb->refcount.refcount) > 1) {
630 drm_modeset_lock_all(dev);
631 /* remove from any CRTC */
632 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
f4510a27 633 if (crtc->primary->fb == fb) {
b62584e3
DV		 634 /* should turn off the crtc */
635 memset(&set, 0, sizeof(struct drm_mode_set));
636 set.crtc = crtc;
637 set.fb = NULL;
638 ret = drm_mode_set_config_internal(&set);
639 if (ret)
640 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
641 }
5ef5f72f 642 }
f453ba04 643
b62584e3 644 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
9125e618
VS		 645 if (plane->fb == fb)
646 drm_plane_force_disable(plane);
8cf5c917 647 }
b62584e3 648 drm_modeset_unlock_all(dev);
8cf5c917
JB		 649 }
650
f7eff60e 651 drm_framebuffer_unreference(fb);
f453ba04 652}
f7eff60e 653EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04 654
51fd371b
RC		 655DEFINE_WW_CLASS(crtc_ww_class);
656
f453ba04 657/**
e13161af
MR		 658 * drm_crtc_init_with_planes - Initialise a new CRTC object with
659 * specified primary and cursor planes.
f453ba04
DA		 660 * @dev: DRM device
661 * @crtc: CRTC object to init
e13161af
MR		 662 * @primary: Primary plane for CRTC
663 * @cursor: Cursor plane for CRTC
f453ba04
DA		 664 * @funcs: callbacks for the new CRTC
665 *
ad6f5c34 666 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 667 *
c8e32cc1 668 * Returns:
6bfc56aa 669 * Zero on success, error code on failure.
f453ba04 670 */
e13161af
MR		 671int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
672 struct drm_plane *primary,
fc1d3e44 673 struct drm_plane *cursor,
e13161af 674 const struct drm_crtc_funcs *funcs)
f453ba04 675{
51fd371b 676 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 677 int ret;
678
f453ba04
DA		 679 crtc->dev = dev;
680 crtc->funcs = funcs;
7c80e128 681 crtc->invert_dimensions = false;
f453ba04 682
51fd371b 683 drm_modeset_lock_init(&crtc->mutex);
6bfc56aa
VS		 684 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
685 if (ret)
baf698b0 686 return ret;
f453ba04 687
bffd9de0
PZ		 688 crtc->base.properties = &crtc->properties;
689
51fd371b
RC		 690 list_add_tail(&crtc->head, &config->crtc_list);
691 config->num_crtc++;
6bfc56aa 692
e13161af 693 crtc->primary = primary;
fc1d3e44 694 crtc->cursor = cursor;
e13161af
MR		 695 if (primary)
696 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
fc1d3e44
MR		 697 if (cursor)
698 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
e13161af 699
baf698b0 700 return 0;
f453ba04 701}
e13161af 702EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 703
704/**
ad6f5c34 705 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 706 * @crtc: CRTC to cleanup
707 *
ad6f5c34
VS		 708 * This function cleans up @crtc and removes it from the DRM mode setting
709 * core. Note that the function does *not* free the crtc structure itself,
710 * this is the responsibility of the caller.
f453ba04
DA		 711 */
712void drm_crtc_cleanup(struct drm_crtc *crtc)
713{
714 struct drm_device *dev = crtc->dev;
715
9e1c156f
SK		 716 kfree(crtc->gamma_store);
717 crtc->gamma_store = NULL;
f453ba04 718
51fd371b
RC		 719 drm_modeset_lock_fini(&crtc->mutex);
720
f453ba04
DA		 721 drm_mode_object_put(dev, &crtc->base);
722 list_del(&crtc->head);
723 dev->mode_config.num_crtc--;
3009c037
TR		 724
725 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
726 if (crtc->state && crtc->funcs->atomic_destroy_state)
727 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
f453ba04
DA		 728}
729EXPORT_SYMBOL(drm_crtc_cleanup);
730
db5f7a6e
RK		 731/**
732 * drm_crtc_index - find the index of a registered CRTC
733 * @crtc: CRTC to find index for
734 *
735 * Given a registered CRTC, return the index of that CRTC within a DRM
736 * device's list of CRTCs.
737 */
738unsigned int drm_crtc_index(struct drm_crtc *crtc)
739{
740 unsigned int index = 0;
741 struct drm_crtc *tmp;
742
743 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
744 if (tmp == crtc)
745 return index;
746
747 index++;
748 }
749
750 BUG();
751}
752EXPORT_SYMBOL(drm_crtc_index);
753
86f422d5 754/*
f453ba04
DA		 755 * drm_mode_remove - remove and free a mode
756 * @connector: connector list to modify
757 * @mode: mode to remove
758 *
f453ba04
DA		 759 * Remove @mode from @connector's mode list, then free it.
760 */
86f422d5
LD		 761static void drm_mode_remove(struct drm_connector *connector,
762 struct drm_display_mode *mode)
f453ba04
DA		 763{
764 list_del(&mode->head);
554f1d78 765 drm_mode_destroy(connector->dev, mode);
f453ba04 766}
f453ba04 767
eaf99c74
CW		 768/**
769 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
770 * @connector: connector to quwery
eaf99c74
CW		 771 *
772 * The kernel supports per-connector configration of its consoles through
773 * use of the video= parameter. This function parses that option and
774 * extracts the user's specified mode (or enable/disable status) for a
775 * particular connector. This is typically only used during the early fbdev
776 * setup.
777 */
778static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
779{
780 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
781 char *option = NULL;
782
783 if (fb_get_options(connector->name, &option))
784 return;
785
786 if (!drm_mode_parse_command_line_for_connector(option,
787 connector,
788 mode))
789 return;
790
791 if (mode->force) {
792 const char *s;
793
794 switch (mode->force) {
795 case DRM_FORCE_OFF:
796 s = "OFF";
797 break;
798 case DRM_FORCE_ON_DIGITAL:
799 s = "ON - dig";
800 break;
801 default:
802 case DRM_FORCE_ON:
803 s = "ON";
804 break;
805 }
806
807 DRM_INFO("forcing %s connector %s\n", connector->name, s);
808 connector->force = mode->force;
809 }
810
811 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
812 connector->name,
813 mode->xres, mode->yres,
814 mode->refresh_specified ? mode->refresh : 60,
815 mode->rb ? " reduced blanking" : "",
816 mode->margins ? " with margins" : "",
817 mode->interlace ? " interlaced" : "");
818}
819
f453ba04
DA		 820/**
821 * drm_connector_init - Init a preallocated connector
822 * @dev: DRM device
823 * @connector: the connector to init
824 * @funcs: callbacks for this connector
065a50ed 825 * @connector_type: user visible type of the connector
f453ba04 826 *
f453ba04
DA		 827 * Initialises a preallocated connector. Connectors should be
828 * subclassed as part of driver connector objects.
6bfc56aa 829 *
c8e32cc1 830 * Returns:
6bfc56aa 831 * Zero on success, error code on failure.
f453ba04 832 */
6bfc56aa
VS		 833int drm_connector_init(struct drm_device *dev,
834 struct drm_connector *connector,
835 const struct drm_connector_funcs *funcs,
836 int connector_type)
f453ba04 837{
6bfc56aa 838 int ret;
b21e3afe
IM		 839 struct ida *connector_ida =
840 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 841
84849903 842 drm_modeset_lock_all(dev);
f453ba04 843
2ee39452 844 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
6bfc56aa 845 if (ret)
2abdd313 846 goto out_unlock;
6bfc56aa 847
7e3bdf4a 848 connector->base.properties = &connector->properties;
f453ba04
DA		 849 connector->dev = dev;
850 connector->funcs = funcs;
f453ba04
DA		 851 connector->connector_type = connector_type;
852 connector->connector_type_id =
b21e3afe
IM		 853 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
854 if (connector->connector_type_id < 0) {
855 ret = connector->connector_type_id;
2abdd313 856 goto out_put;
b21e3afe 857 }
2abdd313
JN		 858 connector->name =
859 kasprintf(GFP_KERNEL, "%s-%d",
860 drm_connector_enum_list[connector_type].name,
861 connector->connector_type_id);
862 if (!connector->name) {
863 ret = -ENOMEM;
864 goto out_put;
865 }
866
f453ba04
DA		 867 INIT_LIST_HEAD(&connector->probed_modes);
868 INIT_LIST_HEAD(&connector->modes);
869 connector->edid_blob_ptr = NULL;
5e2cb2f6 870 connector->status = connector_status_unknown;
f453ba04 871
eaf99c74
CW		 872 drm_connector_get_cmdline_mode(connector);
873
c7eb76f4
DV		 874 /* We should add connectors at the end to avoid upsetting the connector
875 * index too much. */
f453ba04
DA		 876 list_add_tail(&connector->head, &dev->mode_config.connector_list);
877 dev->mode_config.num_connector++;
878
a7331e5c 879 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 880 drm_object_attach_property(&connector->base,
a7331e5c
TH		 881 dev->mode_config.edid_property,
882 0);
f453ba04 883
58495563 884 drm_object_attach_property(&connector->base,
f453ba04
DA		 885 dev->mode_config.dpms_property, 0);
886
30f65707
TW		 887 connector->debugfs_entry = NULL;
888
2abdd313
JN		 889out_put:
890 if (ret)
891 drm_mode_object_put(dev, &connector->base);
892
893out_unlock:
84849903 894 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 895
896 return ret;
f453ba04
DA		 897}
898EXPORT_SYMBOL(drm_connector_init);
899
900/**
901 * drm_connector_cleanup - cleans up an initialised connector
902 * @connector: connector to cleanup
903 *
f453ba04
DA		 904 * Cleans up the connector but doesn't free the object.
905 */
906void drm_connector_cleanup(struct drm_connector *connector)
907{
908 struct drm_device *dev = connector->dev;
909 struct drm_display_mode *mode, *t;
910
911 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
912 drm_mode_remove(connector, mode);
913
914 list_for_each_entry_safe(mode, t, &connector->modes, head)
915 drm_mode_remove(connector, mode);
916
b21e3afe
IM		 917 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
918 connector->connector_type_id);
919
f453ba04 920 drm_mode_object_put(dev, &connector->base);
2abdd313
JN		 921 kfree(connector->name);
922 connector->name = NULL;
f453ba04 923 list_del(&connector->head);
6380c509 924 dev->mode_config.num_connector--;
3009c037
TR		 925
926 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
927 if (connector->state && connector->funcs->atomic_destroy_state)
928 connector->funcs->atomic_destroy_state(connector,
929 connector->state);
f453ba04
DA		 930}
931EXPORT_SYMBOL(drm_connector_cleanup);
932
10f637bf
DV		 933/**
934 * drm_connector_index - find the index of a registered connector
935 * @connector: connector to find index for
936 *
937 * Given a registered connector, return the index of that connector within a DRM
938 * device's list of connectors.
939 */
940unsigned int drm_connector_index(struct drm_connector *connector)
941{
942 unsigned int index = 0;
943 struct drm_connector *tmp;
c7eb76f4
DV		 944 struct drm_mode_config *config = &connector->dev->mode_config;
945
946 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
10f637bf
DV		 947
948 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
949 if (tmp == connector)
950 return index;
951
952 index++;
953 }
954
955 BUG();
956}
957EXPORT_SYMBOL(drm_connector_index);
958
34ea3d38
TW		 959/**
960 * drm_connector_register - register a connector
961 * @connector: the connector to register
962 *
963 * Register userspace interfaces for a connector
964 *
965 * Returns:
966 * Zero on success, error code on failure.
967 */
968int drm_connector_register(struct drm_connector *connector)
969{
30f65707
TW		 970 int ret;
971
2ee39452
DA		 972 drm_mode_object_register(connector->dev, &connector->base);
973
30f65707
TW		 974 ret = drm_sysfs_connector_add(connector);
975 if (ret)
976 return ret;
977
978 ret = drm_debugfs_connector_add(connector);
979 if (ret) {
980 drm_sysfs_connector_remove(connector);
981 return ret;
982 }
983
984 return 0;
34ea3d38
TW		 985}
986EXPORT_SYMBOL(drm_connector_register);
987
988/**
989 * drm_connector_unregister - unregister a connector
990 * @connector: the connector to unregister
991 *
992 * Unregister userspace interfaces for a connector
993 */
994void drm_connector_unregister(struct drm_connector *connector)
995{
996 drm_sysfs_connector_remove(connector);
30f65707 997 drm_debugfs_connector_remove(connector);
34ea3d38
TW		 998}
999EXPORT_SYMBOL(drm_connector_unregister);
1000
1001
c8e32cc1
DV		 1002/**
1003 * drm_connector_unplug_all - unregister connector userspace interfaces
1004 * @dev: drm device
1005 *
1006 * This function unregisters all connector userspace interfaces in sysfs. Should
1007 * be call when the device is disconnected, e.g. from an usb driver's
1008 * ->disconnect callback.
1009 */
cbc7e221
DA		 1010void drm_connector_unplug_all(struct drm_device *dev)
1011{
1012 struct drm_connector *connector;
1013
1014 /* taking the mode config mutex ends up in a clash with sysfs */
1015 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
34ea3d38 1016 drm_connector_unregister(connector);
cbc7e221
DA		 1017
1018}
1019EXPORT_SYMBOL(drm_connector_unplug_all);
1020
c8e32cc1
DV		 1021/**
1022 * drm_bridge_init - initialize a drm transcoder/bridge
1023 * @dev: drm device
1024 * @bridge: transcoder/bridge to set up
1025 * @funcs: bridge function table
1026 *
1027 * Initialises a preallocated bridge. Bridges should be
1028 * subclassed as part of driver connector objects.
1029 *
1030 * Returns:
1031 * Zero on success, error code on failure.
1032 */
3b336ec4
SP		 1033int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1034 const struct drm_bridge_funcs *funcs)
1035{
1036 int ret;
1037
1038 drm_modeset_lock_all(dev);
1039
1040 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1041 if (ret)
1042 goto out;
1043
1044 bridge->dev = dev;
1045 bridge->funcs = funcs;
1046
1047 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1048 dev->mode_config.num_bridge++;
1049
1050 out:
1051 drm_modeset_unlock_all(dev);
1052 return ret;
1053}
1054EXPORT_SYMBOL(drm_bridge_init);
1055
c8e32cc1
DV		 1056/**
1057 * drm_bridge_cleanup - cleans up an initialised bridge
1058 * @bridge: bridge to cleanup
1059 *
1060 * Cleans up the bridge but doesn't free the object.
1061 */
3b336ec4
SP		 1062void drm_bridge_cleanup(struct drm_bridge *bridge)
1063{
1064 struct drm_device *dev = bridge->dev;
1065
1066 drm_modeset_lock_all(dev);
1067 drm_mode_object_put(dev, &bridge->base);
1068 list_del(&bridge->head);
1069 dev->mode_config.num_bridge--;
1070 drm_modeset_unlock_all(dev);
1071}
1072EXPORT_SYMBOL(drm_bridge_cleanup);
1073
c8e32cc1
DV		 1074/**
1075 * drm_encoder_init - Init a preallocated encoder
1076 * @dev: drm device
1077 * @encoder: the encoder to init
1078 * @funcs: callbacks for this encoder
1079 * @encoder_type: user visible type of the encoder
1080 *
1081 * Initialises a preallocated encoder. Encoder should be
1082 * subclassed as part of driver encoder objects.
1083 *
1084 * Returns:
1085 * Zero on success, error code on failure.
1086 */
6bfc56aa 1087int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 1088 struct drm_encoder *encoder,
1089 const struct drm_encoder_funcs *funcs,
1090 int encoder_type)
f453ba04 1091{
6bfc56aa
VS		 1092 int ret;
1093
84849903 1094 drm_modeset_lock_all(dev);
f453ba04 1095
6bfc56aa
VS		 1096 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1097 if (ret)
e5748946 1098 goto out_unlock;
f453ba04 1099
6bfc56aa 1100 encoder->dev = dev;
f453ba04
DA		 1101 encoder->encoder_type = encoder_type;
1102 encoder->funcs = funcs;
e5748946
JN		 1103 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1104 drm_encoder_enum_list[encoder_type].name,
1105 encoder->base.id);
1106 if (!encoder->name) {
1107 ret = -ENOMEM;
1108 goto out_put;
1109 }
f453ba04
DA		 1110
1111 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1112 dev->mode_config.num_encoder++;
1113
e5748946
JN		 1114out_put:
1115 if (ret)
1116 drm_mode_object_put(dev, &encoder->base);
1117
1118out_unlock:
84849903 1119 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 1120
1121 return ret;
f453ba04
DA		 1122}
1123EXPORT_SYMBOL(drm_encoder_init);
1124
c8e32cc1
DV		 1125/**
1126 * drm_encoder_cleanup - cleans up an initialised encoder
1127 * @encoder: encoder to cleanup
1128 *
1129 * Cleans up the encoder but doesn't free the object.
1130 */
f453ba04
DA		 1131void drm_encoder_cleanup(struct drm_encoder *encoder)
1132{
1133 struct drm_device *dev = encoder->dev;
84849903 1134 drm_modeset_lock_all(dev);
f453ba04 1135 drm_mode_object_put(dev, &encoder->base);
e5748946
JN		 1136 kfree(encoder->name);
1137 encoder->name = NULL;
f453ba04 1138 list_del(&encoder->head);
6380c509 1139 dev->mode_config.num_encoder--;
84849903 1140 drm_modeset_unlock_all(dev);
f453ba04
DA		 1141}
1142EXPORT_SYMBOL(drm_encoder_cleanup);
1143
35f2c3ae 1144/**
dc415ff9 1145 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1146 * @dev: DRM device
1147 * @plane: plane object to init
1148 * @possible_crtcs: bitmask of possible CRTCs
1149 * @funcs: callbacks for the new plane
1150 * @formats: array of supported formats (%DRM_FORMAT_*)
1151 * @format_count: number of elements in @formats
dc415ff9 1152 * @type: type of plane (overlay, primary, cursor)
35f2c3ae 1153 *
dc415ff9 1154 * Initializes a plane object of type @type.
35f2c3ae 1155 *
c8e32cc1 1156 * Returns:
35f2c3ae
VS		 1157 * Zero on success, error code on failure.
1158 */
dc415ff9
MR		 1159int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1160 unsigned long possible_crtcs,
1161 const struct drm_plane_funcs *funcs,
1162 const uint32_t *formats, uint32_t format_count,
1163 enum drm_plane_type type)
8cf5c917 1164{
6bfc56aa
VS		 1165 int ret;
1166
6bfc56aa
VS		 1167 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1168 if (ret)
baf698b0 1169 return ret;
6bfc56aa 1170
4d02e2de
DV		 1171 drm_modeset_lock_init(&plane->mutex);
1172
4d93914a 1173 plane->base.properties = &plane->properties;
8cf5c917 1174 plane->dev = dev;
8cf5c917
JB		 1175 plane->funcs = funcs;
1176 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1177 GFP_KERNEL);
1178 if (!plane->format_types) {
1179 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1180 drm_mode_object_put(dev, &plane->base);
baf698b0 1181 return -ENOMEM;
8cf5c917
JB		 1182 }
1183
308e5bcb 1184 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1185 plane->format_count = format_count;
1186 plane->possible_crtcs = possible_crtcs;
dc415ff9 1187 plane->type = type;
8cf5c917 1188
dc415ff9
MR		 1189 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1190 dev->mode_config.num_total_plane++;
1191 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1192 dev->mode_config.num_overlay_plane++;
8cf5c917 1193
9922ab5a
RC		 1194 drm_object_attach_property(&plane->base,
1195 dev->mode_config.plane_type_property,
1196 plane->type);
1197
baf698b0 1198 return 0;
8cf5c917 1199}
dc415ff9
MR		 1200EXPORT_SYMBOL(drm_universal_plane_init);
1201
1202/**
1203 * drm_plane_init - Initialize a legacy plane
1204 * @dev: DRM device
1205 * @plane: plane object to init
1206 * @possible_crtcs: bitmask of possible CRTCs
1207 * @funcs: callbacks for the new plane
1208 * @formats: array of supported formats (%DRM_FORMAT_*)
1209 * @format_count: number of elements in @formats
1210 * @is_primary: plane type (primary vs overlay)
1211 *
1212 * Legacy API to initialize a DRM plane.
1213 *
1214 * New drivers should call drm_universal_plane_init() instead.
1215 *
1216 * Returns:
1217 * Zero on success, error code on failure.
1218 */
1219int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1220 unsigned long possible_crtcs,
1221 const struct drm_plane_funcs *funcs,
1222 const uint32_t *formats, uint32_t format_count,
1223 bool is_primary)
1224{
1225 enum drm_plane_type type;
1226
1227 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1228 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1229 formats, format_count, type);
1230}
8cf5c917
JB		 1231EXPORT_SYMBOL(drm_plane_init);
1232
35f2c3ae
VS		 1233/**
1234 * drm_plane_cleanup - Clean up the core plane usage
1235 * @plane: plane to cleanup
1236 *
1237 * This function cleans up @plane and removes it from the DRM mode setting
1238 * core. Note that the function does *not* free the plane structure itself,
1239 * this is the responsibility of the caller.
1240 */
8cf5c917
JB		 1241void drm_plane_cleanup(struct drm_plane *plane)
1242{
1243 struct drm_device *dev = plane->dev;
1244
84849903 1245 drm_modeset_lock_all(dev);
8cf5c917
JB		 1246 kfree(plane->format_types);
1247 drm_mode_object_put(dev, &plane->base);
dc415ff9
MR		 1248
1249 BUG_ON(list_empty(&plane->head));
1250
1251 list_del(&plane->head);
1252 dev->mode_config.num_total_plane--;
1253 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1254 dev->mode_config.num_overlay_plane--;
84849903 1255 drm_modeset_unlock_all(dev);
3009c037
TR		 1256
1257 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1258 if (plane->state && plane->funcs->atomic_destroy_state)
1259 plane->funcs->atomic_destroy_state(plane, plane->state);
8cf5c917
JB		 1260}
1261EXPORT_SYMBOL(drm_plane_cleanup);
1262
10f637bf
DV		 1263/**
1264 * drm_plane_index - find the index of a registered plane
1265 * @plane: plane to find index for
1266 *
1267 * Given a registered plane, return the index of that CRTC within a DRM
1268 * device's list of planes.
1269 */
1270unsigned int drm_plane_index(struct drm_plane *plane)
1271{
1272 unsigned int index = 0;
1273 struct drm_plane *tmp;
1274
1275 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1276 if (tmp == plane)
1277 return index;
1278
1279 index++;
1280 }
1281
1282 BUG();
1283}
1284EXPORT_SYMBOL(drm_plane_index);
1285
35f2c3ae
VS		 1286/**
1287 * drm_plane_force_disable - Forcibly disable a plane
1288 * @plane: plane to disable
1289 *
1290 * Forces the plane to be disabled.
1291 *
1292 * Used when the plane's current framebuffer is destroyed,
1293 * and when restoring fbdev mode.
1294 */
9125e618
VS		 1295void drm_plane_force_disable(struct drm_plane *plane)
1296{
1297 int ret;
1298
3d30a59b 1299 if (!plane->fb)
9125e618
VS		 1300 return;
1301
3d30a59b 1302 plane->old_fb = plane->fb;
9125e618 1303 ret = plane->funcs->disable_plane(plane);
731cce48 1304 if (ret) {
9125e618 1305 DRM_ERROR("failed to disable plane with busy fb\n");
3d30a59b 1306 plane->old_fb = NULL;
731cce48
DV		 1307 return;
1308 }
9125e618 1309 /* disconnect the plane from the fb and crtc: */
3d30a59b
DV		 1310 __drm_framebuffer_unreference(plane->old_fb);
1311 plane->old_fb = NULL;
9125e618
VS		 1312 plane->fb = NULL;
1313 plane->crtc = NULL;
1314}
1315EXPORT_SYMBOL(drm_plane_force_disable);
1316
f453ba04
DA		 1317static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1318{
1319 struct drm_property *edid;
1320 struct drm_property *dpms;
43aba7eb 1321 struct drm_property *dev_path;
f453ba04
DA		 1322
1323 /*
1324 * Standard properties (apply to all connectors)
1325 */
1326 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1327 DRM_MODE_PROP_IMMUTABLE,
1328 "EDID", 0);
1329 dev->mode_config.edid_property = edid;
1330
4a67d391
SH		 1331 dpms = drm_property_create_enum(dev, 0,
1332 "DPMS", drm_dpms_enum_list,
1333 ARRAY_SIZE(drm_dpms_enum_list));
f453ba04
DA		 1334 dev->mode_config.dpms_property = dpms;
1335
43aba7eb
DA		 1336 dev_path = drm_property_create(dev,
1337 DRM_MODE_PROP_BLOB |
1338 DRM_MODE_PROP_IMMUTABLE,
1339 "PATH", 0);
1340 dev->mode_config.path_property = dev_path;
1341
f453ba04
DA		 1342 return 0;
1343}
1344
9922ab5a
RC		 1345static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1346{
1347 struct drm_property *type;
1348
1349 /*
1350 * Standard properties (apply to all planes)
1351 */
1352 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1353 "type", drm_plane_type_enum_list,
1354 ARRAY_SIZE(drm_plane_type_enum_list));
1355 dev->mode_config.plane_type_property = type;
1356
1357 return 0;
1358}
1359
f453ba04
DA		 1360/**
1361 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1362 * @dev: DRM device
1363 *
1364 * Called by a driver the first time a DVI-I connector is made.
1365 */
1366int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1367{
1368 struct drm_property *dvi_i_selector;
1369 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1370
1371 if (dev->mode_config.dvi_i_select_subconnector_property)
1372 return 0;
1373
1374 dvi_i_selector =
4a67d391 1375 drm_property_create_enum(dev, 0,
f453ba04 1376 "select subconnector",
4a67d391 1377 drm_dvi_i_select_enum_list,
f453ba04 1378 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1379 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1380
4a67d391 1381 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1382 "subconnector",
4a67d391 1383 drm_dvi_i_subconnector_enum_list,
f453ba04 1384 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1385 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1386
1387 return 0;
1388}
1389EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1390
1391/**
1392 * drm_create_tv_properties - create TV specific connector properties
1393 * @dev: DRM device
1394 * @num_modes: number of different TV formats (modes) supported
1395 * @modes: array of pointers to strings containing name of each format
1396 *
1397 * Called by a driver's TV initialization routine, this function creates
1398 * the TV specific connector properties for a given device. Caller is
1399 * responsible for allocating a list of format names and passing them to
1400 * this routine.
1401 */
2f763312
TR		 1402int drm_mode_create_tv_properties(struct drm_device *dev,
1403 unsigned int num_modes,
f453ba04
DA		 1404 char *modes[])
1405{
1406 struct drm_property *tv_selector;
1407 struct drm_property *tv_subconnector;
2f763312 1408 unsigned int i;
f453ba04
DA		 1409
1410 if (dev->mode_config.tv_select_subconnector_property)
1411 return 0;
1412
1413 /*
1414 * Basic connector properties
1415 */
4a67d391 1416 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1417 "select subconnector",
4a67d391 1418 drm_tv_select_enum_list,
f453ba04 1419 ARRAY_SIZE(drm_tv_select_enum_list));
f453ba04
DA		 1420 dev->mode_config.tv_select_subconnector_property = tv_selector;
1421
1422 tv_subconnector =
4a67d391
SH		 1423 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1424 "subconnector",
1425 drm_tv_subconnector_enum_list,
f453ba04 1426 ARRAY_SIZE(drm_tv_subconnector_enum_list));
f453ba04
DA		 1427 dev->mode_config.tv_subconnector_property = tv_subconnector;
1428
1429 /*
1430 * Other, TV specific properties: margins & TV modes.
1431 */
1432 dev->mode_config.tv_left_margin_property =
d9bc3c02 1433 drm_property_create_range(dev, 0, "left margin", 0, 100);
f453ba04
DA		 1434
1435 dev->mode_config.tv_right_margin_property =
d9bc3c02 1436 drm_property_create_range(dev, 0, "right margin", 0, 100);
f453ba04
DA		 1437
1438 dev->mode_config.tv_top_margin_property =
d9bc3c02 1439 drm_property_create_range(dev, 0, "top margin", 0, 100);
f453ba04
DA		 1440
1441 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1442 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
f453ba04
DA		 1443
1444 dev->mode_config.tv_mode_property =
1445 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1446 "mode", num_modes);
1447 for (i = 0; i < num_modes; i++)
1448 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1449 i, modes[i]);
1450
b6b7902e 1451 dev->mode_config.tv_brightness_property =
d9bc3c02 1452 drm_property_create_range(dev, 0, "brightness", 0, 100);
b6b7902e
FJ		 1453
1454 dev->mode_config.tv_contrast_property =
d9bc3c02 1455 drm_property_create_range(dev, 0, "contrast", 0, 100);
b6b7902e
FJ		 1456
1457 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1458 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
b6b7902e 1459
a75f0236 1460 dev->mode_config.tv_overscan_property =
d9bc3c02 1461 drm_property_create_range(dev, 0, "overscan", 0, 100);
a75f0236
FJ		 1462
1463 dev->mode_config.tv_saturation_property =
d9bc3c02 1464 drm_property_create_range(dev, 0, "saturation", 0, 100);
a75f0236
FJ		 1465
1466 dev->mode_config.tv_hue_property =
d9bc3c02 1467 drm_property_create_range(dev, 0, "hue", 0, 100);
a75f0236 1468
f453ba04
DA		 1469 return 0;
1470}
1471EXPORT_SYMBOL(drm_mode_create_tv_properties);
1472
1473/**
1474 * drm_mode_create_scaling_mode_property - create scaling mode property
1475 * @dev: DRM device
1476 *
1477 * Called by a driver the first time it's needed, must be attached to desired
1478 * connectors.
1479 */
1480int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1481{
1482 struct drm_property *scaling_mode;
f453ba04
DA		 1483
1484 if (dev->mode_config.scaling_mode_property)
1485 return 0;
1486
1487 scaling_mode =
4a67d391
SH		 1488 drm_property_create_enum(dev, 0, "scaling mode",
1489 drm_scaling_mode_enum_list,
f453ba04 1490 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1491
1492 dev->mode_config.scaling_mode_property = scaling_mode;
1493
1494 return 0;
1495}
1496EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1497
ff587e45
VK		 1498/**
1499 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1500 * @dev: DRM device
1501 *
1502 * Called by a driver the first time it's needed, must be attached to desired
1503 * connectors.
1504 *
1505 * Returns:
1a498633 1506 * Zero on success, negative errno on failure.
ff587e45
VK		 1507 */
1508int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1509{
1510 if (dev->mode_config.aspect_ratio_property)
1511 return 0;
1512
1513 dev->mode_config.aspect_ratio_property =
1514 drm_property_create_enum(dev, 0, "aspect ratio",
1515 drm_aspect_ratio_enum_list,
1516 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1517
1518 if (dev->mode_config.aspect_ratio_property == NULL)
1519 return -ENOMEM;
1520
1521 return 0;
1522}
1523EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1524
884840aa
JB		 1525/**
1526 * drm_mode_create_dirty_property - create dirty property
1527 * @dev: DRM device
1528 *
1529 * Called by a driver the first time it's needed, must be attached to desired
1530 * connectors.
1531 */
1532int drm_mode_create_dirty_info_property(struct drm_device *dev)
1533{
1534 struct drm_property *dirty_info;
884840aa
JB		 1535
1536 if (dev->mode_config.dirty_info_property)
1537 return 0;
1538
1539 dirty_info =
4a67d391 1540 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1541 "dirty",
4a67d391 1542 drm_dirty_info_enum_list,
884840aa 1543 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1544 dev->mode_config.dirty_info_property = dirty_info;
1545
1546 return 0;
1547}
1548EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1549
5bb2bbf5
DA		 1550/**
1551 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1552 * @dev: DRM device
1553 *
1554 * Create the the suggested x/y offset property for connectors.
1555 */
1556int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1557{
1558 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1559 return 0;
1560
1561 dev->mode_config.suggested_x_property =
1562 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1563
1564 dev->mode_config.suggested_y_property =
1565 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1566
1567 if (dev->mode_config.suggested_x_property == NULL ||
1568 dev->mode_config.suggested_y_property == NULL)
1569 return -ENOMEM;
1570 return 0;
1571}
1572EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1573
ea9cbb06 1574static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
f453ba04
DA		 1575{
1576 uint32_t total_objects = 0;
1577
1578 total_objects += dev->mode_config.num_crtc;
1579 total_objects += dev->mode_config.num_connector;
1580 total_objects += dev->mode_config.num_encoder;
3b336ec4 1581 total_objects += dev->mode_config.num_bridge;
f453ba04 1582
f453ba04
DA		 1583 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1584 if (!group->id_list)
1585 return -ENOMEM;
1586
1587 group->num_crtcs = 0;
1588 group->num_connectors = 0;
1589 group->num_encoders = 0;
3b336ec4 1590 group->num_bridges = 0;
f453ba04
DA		 1591 return 0;
1592}
1593
ad222799
DA		 1594void drm_mode_group_destroy(struct drm_mode_group *group)
1595{
1596 kfree(group->id_list);
1597 group->id_list = NULL;
1598}
1599
c8e32cc1
DV		 1600/*
1601 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1602 * the drm core's responsibility to set up mode control groups.
1603 */
f453ba04
DA		 1604int drm_mode_group_init_legacy_group(struct drm_device *dev,
1605 struct drm_mode_group *group)
1606{
1607 struct drm_crtc *crtc;
1608 struct drm_encoder *encoder;
1609 struct drm_connector *connector;
3b336ec4 1610 struct drm_bridge *bridge;
f453ba04
DA		 1611 int ret;
1612
1613 if ((ret = drm_mode_group_init(dev, group)))
1614 return ret;
1615
1616 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1617 group->id_list[group->num_crtcs++] = crtc->base.id;
1618
1619 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1620 group->id_list[group->num_crtcs + group->num_encoders++] =
1621 encoder->base.id;
1622
1623 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1624 group->id_list[group->num_crtcs + group->num_encoders +
1625 group->num_connectors++] = connector->base.id;
1626
3b336ec4
SP		 1627 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1628 group->id_list[group->num_crtcs + group->num_encoders +
1629 group->num_connectors + group->num_bridges++] =
1630 bridge->base.id;
1631
f453ba04
DA		 1632 return 0;
1633}
9c1dfc55 1634EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
f453ba04 1635
2390cd11
DA		 1636void drm_reinit_primary_mode_group(struct drm_device *dev)
1637{
1638 drm_modeset_lock_all(dev);
1639 drm_mode_group_destroy(&dev->primary->mode_group);
1640 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1641 drm_modeset_unlock_all(dev);
1642}
1643EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1644
f453ba04
DA		 1645/**
1646 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1647 * @out: drm_mode_modeinfo struct to return to the user
1648 * @in: drm_display_mode to use
1649 *
f453ba04
DA		 1650 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1651 * the user.
1652 */
93bbf6db
VS		 1653static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1654 const struct drm_display_mode *in)
f453ba04 1655{
e36fae38
VS		 1656 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1657 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1658 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1659 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1660 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1661 "timing values too large for mode info\n");
1662
f453ba04
DA		 1663 out->clock = in->clock;
1664 out->hdisplay = in->hdisplay;
1665 out->hsync_start = in->hsync_start;
1666 out->hsync_end = in->hsync_end;
1667 out->htotal = in->htotal;
1668 out->hskew = in->hskew;
1669 out->vdisplay = in->vdisplay;
1670 out->vsync_start = in->vsync_start;
1671 out->vsync_end = in->vsync_end;
1672 out->vtotal = in->vtotal;
1673 out->vscan = in->vscan;
1674 out->vrefresh = in->vrefresh;
1675 out->flags = in->flags;
1676 out->type = in->type;
1677 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1678 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1679}
1680
1681/**
74afee7d 1682 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
f453ba04
DA		 1683 * @out: drm_display_mode to return to the user
1684 * @in: drm_mode_modeinfo to use
1685 *
f453ba04
DA		 1686 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1687 * the caller.
90367bf6 1688 *
c8e32cc1 1689 * Returns:
1a498633 1690 * Zero on success, negative errno on failure.
f453ba04 1691 */
93bbf6db
VS		 1692static int drm_crtc_convert_umode(struct drm_display_mode *out,
1693 const struct drm_mode_modeinfo *in)
f453ba04 1694{
90367bf6
VS		 1695 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1696 return -ERANGE;
1697
5848ad40
DL		 1698 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1699 return -EINVAL;
1700
f453ba04
DA		 1701 out->clock = in->clock;
1702 out->hdisplay = in->hdisplay;
1703 out->hsync_start = in->hsync_start;
1704 out->hsync_end = in->hsync_end;
1705 out->htotal = in->htotal;
1706 out->hskew = in->hskew;
1707 out->vdisplay = in->vdisplay;
1708 out->vsync_start = in->vsync_start;
1709 out->vsync_end = in->vsync_end;
1710 out->vtotal = in->vtotal;
1711 out->vscan = in->vscan;
1712 out->vrefresh = in->vrefresh;
1713 out->flags = in->flags;
1714 out->type = in->type;
1715 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1716 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
90367bf6
VS		 1717
1718 return 0;
f453ba04
DA		 1719}
1720
1721/**
1722 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1723 * @dev: drm device for the ioctl
1724 * @data: data pointer for the ioctl
1725 * @file_priv: drm file for the ioctl call
f453ba04 1726 *
f453ba04
DA		 1727 * Construct a set of configuration description structures and return
1728 * them to the user, including CRTC, connector and framebuffer configuration.
1729 *
1730 * Called by the user via ioctl.
1731 *
c8e32cc1 1732 * Returns:
1a498633 1733 * Zero on success, negative errno on failure.
f453ba04
DA		 1734 */
1735int drm_mode_getresources(struct drm_device *dev, void *data,
1736 struct drm_file *file_priv)
1737{
1738 struct drm_mode_card_res *card_res = data;
1739 struct list_head *lh;
1740 struct drm_framebuffer *fb;
1741 struct drm_connector *connector;
1742 struct drm_crtc *crtc;
1743 struct drm_encoder *encoder;
1744 int ret = 0;
1745 int connector_count = 0;
1746 int crtc_count = 0;
1747 int fb_count = 0;
1748 int encoder_count = 0;
1749 int copied = 0, i;
1750 uint32_t __user *fb_id;
1751 uint32_t __user *crtc_id;
1752 uint32_t __user *connector_id;
1753 uint32_t __user *encoder_id;
1754 struct drm_mode_group *mode_group;
1755
fb3b06c8
DA		 1756 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1757 return -EINVAL;
1758
f453ba04 1759
4b096ac1 1760 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1761 /*
1762 * For the non-control nodes we need to limit the list of resources
1763 * by IDs in the group list for this node
1764 */
1765 list_for_each(lh, &file_priv->fbs)
1766 fb_count++;
1767
4b096ac1
DV		 1768 /* handle this in 4 parts */
1769 /* FBs */
1770 if (card_res->count_fbs >= fb_count) {
1771 copied = 0;
1772 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1773 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1774 if (put_user(fb->base.id, fb_id + copied)) {
1775 mutex_unlock(&file_priv->fbs_lock);
1776 return -EFAULT;
1777 }
1778 copied++;
1779 }
1780 }
1781 card_res->count_fbs = fb_count;
1782 mutex_unlock(&file_priv->fbs_lock);
1783
fcf93f69
DV		 1784 /* mode_config.mutex protects the connector list against e.g. DP MST
1785 * connector hot-adding. CRTC/Plane lists are invariant. */
1786 mutex_lock(&dev->mode_config.mutex);
43683057 1787 if (!drm_is_primary_client(file_priv)) {
f453ba04 1788
09f308f7 1789 mode_group = NULL;
f453ba04
DA		 1790 list_for_each(lh, &dev->mode_config.crtc_list)
1791 crtc_count++;
1792
1793 list_for_each(lh, &dev->mode_config.connector_list)
1794 connector_count++;
1795
1796 list_for_each(lh, &dev->mode_config.encoder_list)
1797 encoder_count++;
1798 } else {
1799
09f308f7 1800 mode_group = &file_priv->master->minor->mode_group;
f453ba04
DA		 1801 crtc_count = mode_group->num_crtcs;
1802 connector_count = mode_group->num_connectors;
1803 encoder_count = mode_group->num_encoders;
1804 }
1805
1806 card_res->max_height = dev->mode_config.max_height;
1807 card_res->min_height = dev->mode_config.min_height;
1808 card_res->max_width = dev->mode_config.max_width;
1809 card_res->min_width = dev->mode_config.min_width;
1810
f453ba04
DA		 1811 /* CRTCs */
1812 if (card_res->count_crtcs >= crtc_count) {
1813 copied = 0;
1814 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
09f308f7 1815 if (!mode_group) {
f453ba04
DA		 1816 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1817 head) {
9440106b 1818 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1819 if (put_user(crtc->base.id, crtc_id + copied)) {
1820 ret = -EFAULT;
1821 goto out;
1822 }
1823 copied++;
1824 }
1825 } else {
1826 for (i = 0; i < mode_group->num_crtcs; i++) {
1827 if (put_user(mode_group->id_list[i],
1828 crtc_id + copied)) {
1829 ret = -EFAULT;
1830 goto out;
1831 }
1832 copied++;
1833 }
1834 }
1835 }
1836 card_res->count_crtcs = crtc_count;
1837
1838 /* Encoders */
1839 if (card_res->count_encoders >= encoder_count) {
1840 copied = 0;
1841 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
09f308f7 1842 if (!mode_group) {
f453ba04
DA		 1843 list_for_each_entry(encoder,
1844 &dev->mode_config.encoder_list,
1845 head) {
9440106b 1846 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
83a8cfd3 1847 encoder->name);
f453ba04
DA		 1848 if (put_user(encoder->base.id, encoder_id +
1849 copied)) {
1850 ret = -EFAULT;
1851 goto out;
1852 }
1853 copied++;
1854 }
1855 } else {
1856 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1857 if (put_user(mode_group->id_list[i],
1858 encoder_id + copied)) {
1859 ret = -EFAULT;
1860 goto out;
1861 }
1862 copied++;
1863 }
1864
1865 }
1866 }
1867 card_res->count_encoders = encoder_count;
1868
1869 /* Connectors */
1870 if (card_res->count_connectors >= connector_count) {
1871 copied = 0;
1872 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
09f308f7 1873 if (!mode_group) {
f453ba04
DA		 1874 list_for_each_entry(connector,
1875 &dev->mode_config.connector_list,
1876 head) {
9440106b
JG		 1877 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1878 connector->base.id,
25933820 1879 connector->name);
f453ba04
DA		 1880 if (put_user(connector->base.id,
1881 connector_id + copied)) {
1882 ret = -EFAULT;
1883 goto out;
1884 }
1885 copied++;
1886 }
1887 } else {
1888 int start = mode_group->num_crtcs +
1889 mode_group->num_encoders;
1890 for (i = start; i < start + mode_group->num_connectors; i++) {
1891 if (put_user(mode_group->id_list[i],
1892 connector_id + copied)) {
1893 ret = -EFAULT;
1894 goto out;
1895 }
1896 copied++;
1897 }
1898 }
1899 }
1900 card_res->count_connectors = connector_count;
1901
9440106b 1902 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1903 card_res->count_connectors, card_res->count_encoders);
1904
1905out:
fcf93f69 1906 mutex_unlock(&dev->mode_config.mutex);
f453ba04
DA		 1907 return ret;
1908}
1909
1910/**
1911 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1912 * @dev: drm device for the ioctl
1913 * @data: data pointer for the ioctl
1914 * @file_priv: drm file for the ioctl call
f453ba04 1915 *
f453ba04
DA		 1916 * Construct a CRTC configuration structure to return to the user.
1917 *
1918 * Called by the user via ioctl.
1919 *
c8e32cc1 1920 * Returns:
1a498633 1921 * Zero on success, negative errno on failure.
f453ba04
DA		 1922 */
1923int drm_mode_getcrtc(struct drm_device *dev,
1924 void *data, struct drm_file *file_priv)
1925{
1926 struct drm_mode_crtc *crtc_resp = data;
1927 struct drm_crtc *crtc;
f453ba04 1928
fb3b06c8
DA		 1929 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1930 return -EINVAL;
1931
a2b34e22 1932 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
fcf93f69
DV		 1933 if (!crtc)
1934 return -ENOENT;
f453ba04 1935
fcf93f69 1936 drm_modeset_lock_crtc(crtc, crtc->primary);
f453ba04
DA		 1937 crtc_resp->x = crtc->x;
1938 crtc_resp->y = crtc->y;
1939 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 1940 if (crtc->primary->fb)
1941 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 1942 else
1943 crtc_resp->fb_id = 0;
1944
1945 if (crtc->enabled) {
1946
1947 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1948 crtc_resp->mode_valid = 1;
1949
1950 } else {
1951 crtc_resp->mode_valid = 0;
1952 }
fcf93f69 1953 drm_modeset_unlock_crtc(crtc);
f453ba04 1954
baf698b0 1955 return 0;
f453ba04
DA		 1956}
1957
61d8e328
DL		 1958static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1959 const struct drm_file *file_priv)
1960{
1961 /*
1962 * If user-space hasn't configured the driver to expose the stereo 3D
1963 * modes, don't expose them.
1964 */
1965 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1966 return false;
1967
1968 return true;
1969}
1970
abd69c55
DV		 1971static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
1972{
1973 /* For atomic drivers only state objects are synchronously updated and
1974 * protected by modeset locks, so check those first. */
1975 if (connector->state)
1976 return connector->state->best_encoder;
1977 return connector->encoder;
1978}
1979
f453ba04
DA		 1980/**
1981 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 1982 * @dev: drm device for the ioctl
1983 * @data: data pointer for the ioctl
1984 * @file_priv: drm file for the ioctl call
f453ba04 1985 *
f453ba04
DA		 1986 * Construct a connector configuration structure to return to the user.
1987 *
1988 * Called by the user via ioctl.
1989 *
c8e32cc1 1990 * Returns:
1a498633 1991 * Zero on success, negative errno on failure.
f453ba04
DA		 1992 */
1993int drm_mode_getconnector(struct drm_device *dev, void *data,
1994 struct drm_file *file_priv)
1995{
1996 struct drm_mode_get_connector *out_resp = data;
f453ba04 1997 struct drm_connector *connector;
abd69c55 1998 struct drm_encoder *encoder;
f453ba04
DA		 1999 struct drm_display_mode *mode;
2000 int mode_count = 0;
2001 int props_count = 0;
2002 int encoders_count = 0;
2003 int ret = 0;
2004 int copied = 0;
2005 int i;
2006 struct drm_mode_modeinfo u_mode;
2007 struct drm_mode_modeinfo __user *mode_ptr;
2008 uint32_t __user *prop_ptr;
2009 uint64_t __user *prop_values;
2010 uint32_t __user *encoder_ptr;
2011
fb3b06c8
DA		 2012 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2013 return -EINVAL;
2014
f453ba04
DA		 2015 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2016
9440106b 2017 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 2018
7b24056b 2019 mutex_lock(&dev->mode_config.mutex);
f453ba04 2020
a2b34e22
RC		 2021 connector = drm_connector_find(dev, out_resp->connector_id);
2022 if (!connector) {
f27657f2 2023 ret = -ENOENT;
f453ba04
DA		 2024 goto out;
2025 }
f453ba04 2026
7f88a9be 2027 props_count = connector->properties.count;
f453ba04
DA		 2028
2029 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2030 if (connector->encoder_ids[i] != 0) {
2031 encoders_count++;
2032 }
2033 }
2034
2035 if (out_resp->count_modes == 0) {
2036 connector->funcs->fill_modes(connector,
2037 dev->mode_config.max_width,
2038 dev->mode_config.max_height);
2039 }
2040
2041 /* delayed so we get modes regardless of pre-fill_modes state */
2042 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 2043 if (drm_mode_expose_to_userspace(mode, file_priv))
2044 mode_count++;
f453ba04
DA		 2045
2046 out_resp->connector_id = connector->base.id;
2047 out_resp->connector_type = connector->connector_type;
2048 out_resp->connector_type_id = connector->connector_type_id;
2049 out_resp->mm_width = connector->display_info.width_mm;
2050 out_resp->mm_height = connector->display_info.height_mm;
2051 out_resp->subpixel = connector->display_info.subpixel_order;
2052 out_resp->connection = connector->status;
832fd395 2053 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2054
2055 encoder = drm_connector_get_encoder(connector);
2056 if (encoder)
2057 out_resp->encoder_id = encoder->base.id;
f453ba04
DA		 2058 else
2059 out_resp->encoder_id = 0;
832fd395 2060 drm_modeset_unlock(&dev->mode_config.connection_mutex);
f453ba04
DA		 2061
2062 /*
2063 * This ioctl is called twice, once to determine how much space is
2064 * needed, and the 2nd time to fill it.
2065 */
2066 if ((out_resp->count_modes >= mode_count) && mode_count) {
2067 copied = 0;
81f6c7f8 2068 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 2069 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 2070 if (!drm_mode_expose_to_userspace(mode, file_priv))
2071 continue;
2072
f453ba04
DA		 2073 drm_crtc_convert_to_umode(&u_mode, mode);
2074 if (copy_to_user(mode_ptr + copied,
2075 &u_mode, sizeof(u_mode))) {
2076 ret = -EFAULT;
2077 goto out;
2078 }
2079 copied++;
2080 }
2081 }
2082 out_resp->count_modes = mode_count;
2083
2084 if ((out_resp->count_props >= props_count) && props_count) {
2085 copied = 0;
81f6c7f8
VS		 2086 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2087 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
7f88a9be
PZ		 2088 for (i = 0; i < connector->properties.count; i++) {
2089 if (put_user(connector->properties.ids[i],
2090 prop_ptr + copied)) {
2091 ret = -EFAULT;
2092 goto out;
2093 }
f453ba04 2094
7f88a9be
PZ		 2095 if (put_user(connector->properties.values[i],
2096 prop_values + copied)) {
2097 ret = -EFAULT;
2098 goto out;
f453ba04 2099 }
7f88a9be 2100 copied++;
f453ba04
DA		 2101 }
2102 }
2103 out_resp->count_props = props_count;
2104
2105 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2106 copied = 0;
81f6c7f8 2107 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 2108 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2109 if (connector->encoder_ids[i] != 0) {
2110 if (put_user(connector->encoder_ids[i],
2111 encoder_ptr + copied)) {
2112 ret = -EFAULT;
2113 goto out;
2114 }
2115 copied++;
2116 }
2117 }
2118 }
2119 out_resp->count_encoders = encoders_count;
2120
2121out:
7b24056b
DV		 2122 mutex_unlock(&dev->mode_config.mutex);
2123
f453ba04
DA		 2124 return ret;
2125}
2126
abd69c55
DV		 2127static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2128{
2129 struct drm_connector *connector;
2130 struct drm_device *dev = encoder->dev;
2131 bool uses_atomic = false;
2132
2133 /* For atomic drivers only state objects are synchronously updated and
2134 * protected by modeset locks, so check those first. */
2135 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2136 if (!connector->state)
2137 continue;
2138
2139 uses_atomic = true;
2140
2141 if (connector->state->best_encoder != encoder)
2142 continue;
2143
2144 return connector->state->crtc;
2145 }
2146
2147 /* Don't return stale data (e.g. pending async disable). */
2148 if (uses_atomic)
2149 return NULL;
2150
2151 return encoder->crtc;
2152}
2153
c8e32cc1
DV		 2154/**
2155 * drm_mode_getencoder - get encoder configuration
2156 * @dev: drm device for the ioctl
2157 * @data: data pointer for the ioctl
2158 * @file_priv: drm file for the ioctl call
2159 *
2160 * Construct a encoder configuration structure to return to the user.
2161 *
2162 * Called by the user via ioctl.
2163 *
2164 * Returns:
1a498633 2165 * Zero on success, negative errno on failure.
c8e32cc1 2166 */
f453ba04
DA		 2167int drm_mode_getencoder(struct drm_device *dev, void *data,
2168 struct drm_file *file_priv)
2169{
2170 struct drm_mode_get_encoder *enc_resp = data;
f453ba04 2171 struct drm_encoder *encoder;
abd69c55 2172 struct drm_crtc *crtc;
f453ba04 2173
fb3b06c8
DA		 2174 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2175 return -EINVAL;
2176
a2b34e22 2177 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
fcf93f69
DV		 2178 if (!encoder)
2179 return -ENOENT;
f453ba04 2180
fcf93f69 2181 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2182 crtc = drm_encoder_get_crtc(encoder);
2183 if (crtc)
2184 enc_resp->crtc_id = crtc->base.id;
2185 else if (encoder->crtc)
f453ba04
DA		 2186 enc_resp->crtc_id = encoder->crtc->base.id;
2187 else
2188 enc_resp->crtc_id = 0;
fcf93f69
DV		 2189 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2190
f453ba04
DA		 2191 enc_resp->encoder_type = encoder->encoder_type;
2192 enc_resp->encoder_id = encoder->base.id;
2193 enc_resp->possible_crtcs = encoder->possible_crtcs;
2194 enc_resp->possible_clones = encoder->possible_clones;
2195
baf698b0 2196 return 0;
f453ba04
DA		 2197}
2198
8cf5c917 2199/**
c8e32cc1 2200 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 2201 * @dev: DRM device
2202 * @data: ioctl data
2203 * @file_priv: DRM file info
2204 *
c8e32cc1
DV		 2205 * Construct a list of plane ids to return to the user.
2206 *
2207 * Called by the user via ioctl.
2208 *
2209 * Returns:
1a498633 2210 * Zero on success, negative errno on failure.
8cf5c917
JB		 2211 */
2212int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 2213 struct drm_file *file_priv)
8cf5c917
JB		 2214{
2215 struct drm_mode_get_plane_res *plane_resp = data;
2216 struct drm_mode_config *config;
2217 struct drm_plane *plane;
2218 uint32_t __user *plane_ptr;
fcf93f69 2219 int copied = 0;
681e7ec7 2220 unsigned num_planes;
8cf5c917
JB		 2221
2222 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2223 return -EINVAL;
2224
8cf5c917
JB		 2225 config = &dev->mode_config;
2226
681e7ec7
MR		 2227 if (file_priv->universal_planes)
2228 num_planes = config->num_total_plane;
2229 else
2230 num_planes = config->num_overlay_plane;
2231
8cf5c917
JB		 2232 /*
2233 * This ioctl is called twice, once to determine how much space is
2234 * needed, and the 2nd time to fill it.
2235 */
681e7ec7
MR		 2236 if (num_planes &&
2237 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 2238 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917 2239
fcf93f69 2240 /* Plane lists are invariant, no locking needed. */
8cf5c917 2241 list_for_each_entry(plane, &config->plane_list, head) {
681e7ec7
MR		 2242 /*
2243 * Unless userspace set the 'universal planes'
2244 * capability bit, only advertise overlays.
2245 */
2246 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2247 !file_priv->universal_planes)
e27dde3e
MR		 2248 continue;
2249
fcf93f69
DV		 2250 if (put_user(plane->base.id, plane_ptr + copied))
2251 return -EFAULT;
8cf5c917
JB		 2252 copied++;
2253 }
2254 }
681e7ec7 2255 plane_resp->count_planes = num_planes;
8cf5c917 2256
fcf93f69 2257 return 0;
8cf5c917
JB		 2258}
2259
2260/**
c8e32cc1 2261 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2262 * @dev: DRM device
2263 * @data: ioctl data
2264 * @file_priv: DRM file info
2265 *
c8e32cc1
DV		 2266 * Construct a plane configuration structure to return to the user.
2267 *
2268 * Called by the user via ioctl.
2269 *
2270 * Returns:
1a498633 2271 * Zero on success, negative errno on failure.
8cf5c917
JB		 2272 */
2273int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2274 struct drm_file *file_priv)
8cf5c917
JB		 2275{
2276 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2277 struct drm_plane *plane;
2278 uint32_t __user *format_ptr;
8cf5c917
JB		 2279
2280 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2281 return -EINVAL;
2282
a2b34e22 2283 plane = drm_plane_find(dev, plane_resp->plane_id);
fcf93f69
DV		 2284 if (!plane)
2285 return -ENOENT;
8cf5c917 2286
fcf93f69 2287 drm_modeset_lock(&plane->mutex, NULL);
8cf5c917
JB		 2288 if (plane->crtc)
2289 plane_resp->crtc_id = plane->crtc->base.id;
2290 else
2291 plane_resp->crtc_id = 0;
2292
2293 if (plane->fb)
2294 plane_resp->fb_id = plane->fb->base.id;
2295 else
2296 plane_resp->fb_id = 0;
fcf93f69 2297 drm_modeset_unlock(&plane->mutex);
8cf5c917
JB		 2298
2299 plane_resp->plane_id = plane->base.id;
2300 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2301 plane_resp->gamma_size = 0;
8cf5c917
JB		 2302
2303 /*
2304 * This ioctl is called twice, once to determine how much space is
2305 * needed, and the 2nd time to fill it.
2306 */
2307 if (plane->format_count &&
2308 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2309 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2310 if (copy_to_user(format_ptr,
2311 plane->format_types,
2312 sizeof(uint32_t) * plane->format_count)) {
fcf93f69 2313 return -EFAULT;
8cf5c917
JB		 2314 }
2315 }
2316 plane_resp->count_format_types = plane->format_count;
2317
baf698b0 2318 return 0;
8cf5c917
JB		 2319}
2320
b36552b3
MR		 2321/*
2322 * setplane_internal - setplane handler for internal callers
8cf5c917 2323 *
b36552b3
MR		 2324 * Note that we assume an extra reference has already been taken on fb. If the
2325 * update fails, this reference will be dropped before return; if it succeeds,
2326 * the previous framebuffer (if any) will be unreferenced instead.
c8e32cc1 2327 *
b36552b3 2328 * src_{x,y,w,h} are provided in 16.16 fixed point format
8cf5c917 2329 */
f2b50c11
DV		 2330static int __setplane_internal(struct drm_plane *plane,
2331 struct drm_crtc *crtc,
2332 struct drm_framebuffer *fb,
2333 int32_t crtc_x, int32_t crtc_y,
2334 uint32_t crtc_w, uint32_t crtc_h,
2335 /* src_{x,y,w,h} values are 16.16 fixed point */
2336 uint32_t src_x, uint32_t src_y,
2337 uint32_t src_w, uint32_t src_h)
8cf5c917 2338{
8cf5c917 2339 int ret = 0;
42ef8789 2340 unsigned int fb_width, fb_height;
2f763312 2341 unsigned int i;
8cf5c917 2342
8cf5c917 2343 /* No fb means shut it down */
b36552b3 2344 if (!fb) {
3d30a59b 2345 plane->old_fb = plane->fb;
731cce48
DV		 2346 ret = plane->funcs->disable_plane(plane);
2347 if (!ret) {
2348 plane->crtc = NULL;
2349 plane->fb = NULL;
2350 } else {
3d30a59b 2351 plane->old_fb = NULL;
731cce48 2352 }
8cf5c917
JB		 2353 goto out;
2354 }
2355
7f994f3f
MR		 2356 /* Check whether this plane is usable on this CRTC */
2357 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2358 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2359 ret = -EINVAL;
2360 goto out;
2361 }
2362
62443be6
VS		 2363 /* Check whether this plane supports the fb pixel format. */
2364 for (i = 0; i < plane->format_count; i++)
2365 if (fb->pixel_format == plane->format_types[i])
2366 break;
2367 if (i == plane->format_count) {
6ba6d03e
VS		 2368 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2369 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2370 ret = -EINVAL;
2371 goto out;
2372 }
2373
42ef8789
VS		 2374 fb_width = fb->width << 16;
2375 fb_height = fb->height << 16;
2376
2377 /* Make sure source coordinates are inside the fb. */
b36552b3
MR		 2378 if (src_w > fb_width ||
2379 src_x > fb_width - src_w ||
2380 src_h > fb_height ||
2381 src_y > fb_height - src_h) {
42ef8789
VS		 2382 DRM_DEBUG_KMS("Invalid source coordinates "
2383 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
b36552b3
MR		 2384 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2385 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2386 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2387 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
42ef8789
VS		 2388 ret = -ENOSPC;
2389 goto out;
2390 }
2391
3d30a59b 2392 plane->old_fb = plane->fb;
8cf5c917 2393 ret = plane->funcs->update_plane(plane, crtc, fb,
b36552b3
MR		 2394 crtc_x, crtc_y, crtc_w, crtc_h,
2395 src_x, src_y, src_w, src_h);
8cf5c917
JB		 2396 if (!ret) {
2397 plane->crtc = crtc;
2398 plane->fb = fb;
35f8badc 2399 fb = NULL;
0fe27f06 2400 } else {
3d30a59b 2401 plane->old_fb = NULL;
8cf5c917
JB		 2402 }
2403
2404out:
6c2a7532
DV		 2405 if (fb)
2406 drm_framebuffer_unreference(fb);
3d30a59b
DV		 2407 if (plane->old_fb)
2408 drm_framebuffer_unreference(plane->old_fb);
2409 plane->old_fb = NULL;
8cf5c917
JB		 2410
2411 return ret;
f2b50c11 2412}
b36552b3 2413
f2b50c11
DV		 2414static int setplane_internal(struct drm_plane *plane,
2415 struct drm_crtc *crtc,
2416 struct drm_framebuffer *fb,
2417 int32_t crtc_x, int32_t crtc_y,
2418 uint32_t crtc_w, uint32_t crtc_h,
2419 /* src_{x,y,w,h} values are 16.16 fixed point */
2420 uint32_t src_x, uint32_t src_y,
2421 uint32_t src_w, uint32_t src_h)
2422{
2423 int ret;
2424
2425 drm_modeset_lock_all(plane->dev);
2426 ret = __setplane_internal(plane, crtc, fb,
2427 crtc_x, crtc_y, crtc_w, crtc_h,
2428 src_x, src_y, src_w, src_h);
2429 drm_modeset_unlock_all(plane->dev);
2430
2431 return ret;
b36552b3
MR		 2432}
2433
2434/**
2435 * drm_mode_setplane - configure a plane's configuration
2436 * @dev: DRM device
2437 * @data: ioctl data*
2438 * @file_priv: DRM file info
2439 *
2440 * Set plane configuration, including placement, fb, scaling, and other factors.
2441 * Or pass a NULL fb to disable (planes may be disabled without providing a
2442 * valid crtc).
2443 *
2444 * Returns:
1a498633 2445 * Zero on success, negative errno on failure.
b36552b3
MR		 2446 */
2447int drm_mode_setplane(struct drm_device *dev, void *data,
2448 struct drm_file *file_priv)
2449{
2450 struct drm_mode_set_plane *plane_req = data;
b36552b3
MR		 2451 struct drm_plane *plane;
2452 struct drm_crtc *crtc = NULL;
2453 struct drm_framebuffer *fb = NULL;
2454
2455 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2456 return -EINVAL;
2457
2458 /* Give drivers some help against integer overflows */
2459 if (plane_req->crtc_w > INT_MAX ||
2460 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2461 plane_req->crtc_h > INT_MAX ||
2462 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2463 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2464 plane_req->crtc_w, plane_req->crtc_h,
2465 plane_req->crtc_x, plane_req->crtc_y);
2466 return -ERANGE;
2467 }
2468
2469 /*
2470 * First, find the plane, crtc, and fb objects. If not available,
2471 * we don't bother to call the driver.
2472 */
933f622f
RC		 2473 plane = drm_plane_find(dev, plane_req->plane_id);
2474 if (!plane) {
b36552b3
MR		 2475 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2476 plane_req->plane_id);
2477 return -ENOENT;
2478 }
b36552b3
MR		 2479
2480 if (plane_req->fb_id) {
2481 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2482 if (!fb) {
2483 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2484 plane_req->fb_id);
2485 return -ENOENT;
2486 }
2487
933f622f
RC		 2488 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2489 if (!crtc) {
b36552b3
MR		 2490 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2491 plane_req->crtc_id);
2492 return -ENOENT;
2493 }
b36552b3
MR		 2494 }
2495
161d0dc1
MR		 2496 /*
2497 * setplane_internal will take care of deref'ing either the old or new
2498 * framebuffer depending on success.
2499 */
17cfd91f 2500 return setplane_internal(plane, crtc, fb,
b36552b3
MR		 2501 plane_req->crtc_x, plane_req->crtc_y,
2502 plane_req->crtc_w, plane_req->crtc_h,
2503 plane_req->src_x, plane_req->src_y,
2504 plane_req->src_w, plane_req->src_h);
8cf5c917
JB		 2505}
2506
2d13b679
DV		 2507/**
2508 * drm_mode_set_config_internal - helper to call ->set_config
2509 * @set: modeset config to set
2510 *
2511 * This is a little helper to wrap internal calls to the ->set_config driver
2512 * interface. The only thing it adds is correct refcounting dance.
c8e32cc1
DV		 2513 *
2514 * Returns:
1a498633 2515 * Zero on success, negative errno on failure.
2d13b679
DV		 2516 */
2517int drm_mode_set_config_internal(struct drm_mode_set *set)
2518{
2519 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2520 struct drm_framebuffer *fb;
2521 struct drm_crtc *tmp;
b0d12325
DV		 2522 int ret;
2523
5cef29aa
DV		 2524 /*
2525 * NOTE: ->set_config can also disable other crtcs (if we steal all
2526 * connectors from it), hence we need to refcount the fbs across all
2527 * crtcs. Atomic modeset will have saner semantics ...
2528 */
2529 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
3d30a59b 2530 tmp->primary->old_fb = tmp->primary->fb;
5cef29aa 2531
b0d12325 2532 fb = set->fb;
2d13b679 2533
b0d12325
DV		 2534 ret = crtc->funcs->set_config(set);
2535 if (ret == 0) {
e13161af 2536 crtc->primary->crtc = crtc;
0fe27f06 2537 crtc->primary->fb = fb;
5cef29aa 2538 }
cc85e121 2539
5cef29aa 2540 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
f4510a27
MR		 2541 if (tmp->primary->fb)
2542 drm_framebuffer_reference(tmp->primary->fb);
3d30a59b
DV		 2543 if (tmp->primary->old_fb)
2544 drm_framebuffer_unreference(tmp->primary->old_fb);
2545 tmp->primary->old_fb = NULL;
b0d12325
DV		 2546 }
2547
2548 return ret;
2d13b679
DV		 2549}
2550EXPORT_SYMBOL(drm_mode_set_config_internal);
2551
af93629d
MR		 2552/**
2553 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2554 * CRTC viewport
2555 * @crtc: CRTC that framebuffer will be displayed on
2556 * @x: x panning
2557 * @y: y panning
2558 * @mode: mode that framebuffer will be displayed under
2559 * @fb: framebuffer to check size of
c11e9283 2560 */
af93629d
MR		 2561int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2562 int x, int y,
2563 const struct drm_display_mode *mode,
2564 const struct drm_framebuffer *fb)
c11e9283
DL		 2565
2566{
2567 int hdisplay, vdisplay;
2568
2569 hdisplay = mode->hdisplay;
2570 vdisplay = mode->vdisplay;
2571
a0c1bbb0
DL		 2572 if (drm_mode_is_stereo(mode)) {
2573 struct drm_display_mode adjusted = *mode;
2574
2575 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2576 hdisplay = adjusted.crtc_hdisplay;
2577 vdisplay = adjusted.crtc_vdisplay;
2578 }
2579
c11e9283
DL		 2580 if (crtc->invert_dimensions)
2581 swap(hdisplay, vdisplay);
2582
2583 if (hdisplay > fb->width ||
2584 vdisplay > fb->height ||
2585 x > fb->width - hdisplay ||
2586 y > fb->height - vdisplay) {
2587 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2588 fb->width, fb->height, hdisplay, vdisplay, x, y,
2589 crtc->invert_dimensions ? " (inverted)" : "");
2590 return -ENOSPC;
2591 }
2592
2593 return 0;
2594}
af93629d 2595EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2596
f453ba04
DA		 2597/**
2598 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2599 * @dev: drm device for the ioctl
2600 * @data: data pointer for the ioctl
2601 * @file_priv: drm file for the ioctl call
f453ba04 2602 *
f453ba04
DA		 2603 * Build a new CRTC configuration based on user request.
2604 *
2605 * Called by the user via ioctl.
2606 *
c8e32cc1 2607 * Returns:
1a498633 2608 * Zero on success, negative errno on failure.
f453ba04
DA		 2609 */
2610int drm_mode_setcrtc(struct drm_device *dev, void *data,
2611 struct drm_file *file_priv)
2612{
2613 struct drm_mode_config *config = &dev->mode_config;
2614 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2615 struct drm_crtc *crtc;
f453ba04
DA		 2616 struct drm_connector **connector_set = NULL, *connector;
2617 struct drm_framebuffer *fb = NULL;
2618 struct drm_display_mode *mode = NULL;
2619 struct drm_mode_set set;
2620 uint32_t __user *set_connectors_ptr;
4a1b0714 2621 int ret;
f453ba04
DA		 2622 int i;
2623
fb3b06c8
DA		 2624 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2625 return -EINVAL;
2626
1d97e915
VS		 2627 /* For some reason crtc x/y offsets are signed internally. */
2628 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2629 return -ERANGE;
2630
84849903 2631 drm_modeset_lock_all(dev);
a2b34e22
RC		 2632 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2633 if (!crtc) {
58367ed6 2634 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2635 ret = -ENOENT;
f453ba04
DA		 2636 goto out;
2637 }
9440106b 2638 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 2639
2640 if (crtc_req->mode_valid) {
2641 /* If we have a mode we need a framebuffer. */
2642 /* If we pass -1, set the mode with the currently bound fb */
2643 if (crtc_req->fb_id == -1) {
f4510a27 2644 if (!crtc->primary->fb) {
6653cc8d
VS		 2645 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2646 ret = -EINVAL;
2647 goto out;
f453ba04 2648 }
f4510a27 2649 fb = crtc->primary->fb;
b0d12325
DV		 2650 /* Make refcounting symmetric with the lookup path. */
2651 drm_framebuffer_reference(fb);
f453ba04 2652 } else {
786b99ed
DV		 2653 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2654 if (!fb) {
58367ed6
ZY		 2655 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2656 crtc_req->fb_id);
37c4e705 2657 ret = -ENOENT;
f453ba04
DA		 2658 goto out;
2659 }
f453ba04
DA		 2660 }
2661
2662 mode = drm_mode_create(dev);
ee34ab5b
VS		 2663 if (!mode) {
2664 ret = -ENOMEM;
2665 goto out;
2666 }
2667
90367bf6
VS		 2668 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2669 if (ret) {
2670 DRM_DEBUG_KMS("Invalid mode\n");
2671 goto out;
2672 }
2673
f453ba04 2674 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2675
c11e9283
DL		 2676 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2677 mode, fb);
2678 if (ret)
5f61bb42 2679 goto out;
c11e9283 2680
f453ba04
DA		 2681 }
2682
2683 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2684 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2685 ret = -EINVAL;
2686 goto out;
2687 }
2688
7781de74 2689 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2690 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2691 crtc_req->count_connectors);
2692 ret = -EINVAL;
2693 goto out;
2694 }
2695
2696 if (crtc_req->count_connectors > 0) {
2697 u32 out_id;
2698
2699 /* Avoid unbounded kernel memory allocation */
2700 if (crtc_req->count_connectors > config->num_connector) {
2701 ret = -EINVAL;
2702 goto out;
2703 }
2704
2705 connector_set = kmalloc(crtc_req->count_connectors *
2706 sizeof(struct drm_connector *),
2707 GFP_KERNEL);
2708 if (!connector_set) {
2709 ret = -ENOMEM;
2710 goto out;
2711 }
2712
2713 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2714 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2715 if (get_user(out_id, &set_connectors_ptr[i])) {
2716 ret = -EFAULT;
2717 goto out;
2718 }
2719
a2b34e22
RC		 2720 connector = drm_connector_find(dev, out_id);
2721 if (!connector) {
58367ed6
ZY		 2722 DRM_DEBUG_KMS("Connector id %d unknown\n",
2723 out_id);
f27657f2 2724 ret = -ENOENT;
f453ba04
DA		 2725 goto out;
2726 }
9440106b
JG		 2727 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2728 connector->base.id,
25933820 2729 connector->name);
f453ba04
DA		 2730
2731 connector_set[i] = connector;
2732 }
2733 }
2734
2735 set.crtc = crtc;
2736 set.x = crtc_req->x;
2737 set.y = crtc_req->y;
2738 set.mode = mode;
2739 set.connectors = connector_set;
2740 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2741 set.fb = fb;
2d13b679 2742 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2743
2744out:
b0d12325
DV		 2745 if (fb)
2746 drm_framebuffer_unreference(fb);
2747
f453ba04 2748 kfree(connector_set);
ee34ab5b 2749 drm_mode_destroy(dev, mode);
84849903 2750 drm_modeset_unlock_all(dev);
f453ba04
DA		 2751 return ret;
2752}
2753
161d0dc1
MR		 2754/**
2755 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2756 * universal plane handler call
2757 * @crtc: crtc to update cursor for
2758 * @req: data pointer for the ioctl
2759 * @file_priv: drm file for the ioctl call
2760 *
2761 * Legacy cursor ioctl's work directly with driver buffer handles. To
2762 * translate legacy ioctl calls into universal plane handler calls, we need to
2763 * wrap the native buffer handle in a drm_framebuffer.
2764 *
2765 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2766 * buffer with a pitch of 4*width; the universal plane interface should be used
2767 * directly in cases where the hardware can support other buffer settings and
2768 * userspace wants to make use of these capabilities.
2769 *
2770 * Returns:
1a498633 2771 * Zero on success, negative errno on failure.
161d0dc1
MR		 2772 */
2773static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2774 struct drm_mode_cursor2 *req,
2775 struct drm_file *file_priv)
2776{
2777 struct drm_device *dev = crtc->dev;
2778 struct drm_framebuffer *fb = NULL;
2779 struct drm_mode_fb_cmd2 fbreq = {
2780 .width = req->width,
2781 .height = req->height,
2782 .pixel_format = DRM_FORMAT_ARGB8888,
2783 .pitches = { req->width * 4 },
2784 .handles = { req->handle },
2785 };
2786 int32_t crtc_x, crtc_y;
2787 uint32_t crtc_w = 0, crtc_h = 0;
2788 uint32_t src_w = 0, src_h = 0;
2789 int ret = 0;
2790
2791 BUG_ON(!crtc->cursor);
f2b50c11 2792 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
161d0dc1
MR		 2793
2794 /*
2795 * Obtain fb we'll be using (either new or existing) and take an extra
2796 * reference to it if fb != null. setplane will take care of dropping
2797 * the reference if the plane update fails.
2798 */
2799 if (req->flags & DRM_MODE_CURSOR_BO) {
2800 if (req->handle) {
2801 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2802 if (IS_ERR(fb)) {
2803 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2804 return PTR_ERR(fb);
2805 }
2806
2807 drm_framebuffer_reference(fb);
2808 } else {
2809 fb = NULL;
2810 }
2811 } else {
161d0dc1
MR		 2812 fb = crtc->cursor->fb;
2813 if (fb)
2814 drm_framebuffer_reference(fb);
161d0dc1
MR		 2815 }
2816
2817 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2818 crtc_x = req->x;
2819 crtc_y = req->y;
2820 } else {
2821 crtc_x = crtc->cursor_x;
2822 crtc_y = crtc->cursor_y;
2823 }
2824
2825 if (fb) {
2826 crtc_w = fb->width;
2827 crtc_h = fb->height;
2828 src_w = fb->width << 16;
2829 src_h = fb->height << 16;
2830 }
2831
2832 /*
2833 * setplane_internal will take care of deref'ing either the old or new
2834 * framebuffer depending on success.
2835 */
f2b50c11 2836 ret = __setplane_internal(crtc->cursor, crtc, fb,
161d0dc1
MR		 2837 crtc_x, crtc_y, crtc_w, crtc_h,
2838 0, 0, src_w, src_h);
2839
2840 /* Update successful; save new cursor position, if necessary */
2841 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2842 crtc->cursor_x = req->x;
2843 crtc->cursor_y = req->y;
2844 }
2845
2846 return ret;
2847}
2848
4c813d4d
DA		 2849static int drm_mode_cursor_common(struct drm_device *dev,
2850 struct drm_mode_cursor2 *req,
2851 struct drm_file *file_priv)
f453ba04 2852{
f453ba04
DA		 2853 struct drm_crtc *crtc;
2854 int ret = 0;
2855
fb3b06c8
DA		 2856 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2857 return -EINVAL;
2858
7c4eaca4 2859 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 2860 return -EINVAL;
f453ba04 2861
a2b34e22
RC		 2862 crtc = drm_crtc_find(dev, req->crtc_id);
2863 if (!crtc) {
58367ed6 2864 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 2865 return -ENOENT;
f453ba04 2866 }
f453ba04 2867
161d0dc1
MR		 2868 /*
2869 * If this crtc has a universal cursor plane, call that plane's update
2870 * handler rather than using legacy cursor handlers.
2871 */
4d02e2de 2872 drm_modeset_lock_crtc(crtc, crtc->cursor);
f2b50c11
DV		 2873 if (crtc->cursor) {
2874 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2875 goto out;
2876 }
2877
f453ba04 2878 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 2879 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 2880 ret = -ENXIO;
2881 goto out;
2882 }
2883 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 2884 if (crtc->funcs->cursor_set2)
2885 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2886 req->width, req->height, req->hot_x, req->hot_y);
2887 else
2888 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2889 req->width, req->height);
f453ba04
DA		 2890 }
2891
2892 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2893 if (crtc->funcs->cursor_move) {
2894 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2895 } else {
f453ba04
DA		 2896 ret = -EFAULT;
2897 goto out;
2898 }
2899 }
2900out:
d059f652 2901 drm_modeset_unlock_crtc(crtc);
dac35663 2902
f453ba04 2903 return ret;
4c813d4d
DA		 2904
2905}
c8e32cc1
DV		 2906
2907
2908/**
2909 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2910 * @dev: drm device for the ioctl
2911 * @data: data pointer for the ioctl
2912 * @file_priv: drm file for the ioctl call
2913 *
2914 * Set the cursor configuration based on user request.
2915 *
2916 * Called by the user via ioctl.
2917 *
2918 * Returns:
1a498633 2919 * Zero on success, negative errno on failure.
c8e32cc1 2920 */
4c813d4d 2921int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 2922 void *data, struct drm_file *file_priv)
4c813d4d
DA		 2923{
2924 struct drm_mode_cursor *req = data;
2925 struct drm_mode_cursor2 new_req;
2926
2927 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2928 new_req.hot_x = new_req.hot_y = 0;
2929
2930 return drm_mode_cursor_common(dev, &new_req, file_priv);
2931}
2932
c8e32cc1
DV		 2933/**
2934 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2935 * @dev: drm device for the ioctl
2936 * @data: data pointer for the ioctl
2937 * @file_priv: drm file for the ioctl call
2938 *
2939 * Set the cursor configuration based on user request. This implements the 2nd
2940 * version of the cursor ioctl, which allows userspace to additionally specify
2941 * the hotspot of the pointer.
2942 *
2943 * Called by the user via ioctl.
2944 *
2945 * Returns:
1a498633 2946 * Zero on success, negative errno on failure.
c8e32cc1 2947 */
4c813d4d
DA		 2948int drm_mode_cursor2_ioctl(struct drm_device *dev,
2949 void *data, struct drm_file *file_priv)
2950{
2951 struct drm_mode_cursor2 *req = data;
2952 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 2953}
2954
c8e32cc1
DV		 2955/**
2956 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2957 * @bpp: bits per pixels
2958 * @depth: bit depth per pixel
2959 *
2960 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2961 * Useful in fbdev emulation code, since that deals in those values.
2962 */
308e5bcb
JB		 2963uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2964{
2965 uint32_t fmt;
2966
2967 switch (bpp) {
2968 case 8:
d84f031b 2969 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 2970 break;
2971 case 16:
2972 if (depth == 15)
04b3924d 2973 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 2974 else
04b3924d 2975 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 2976 break;
2977 case 24:
04b3924d 2978 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 2979 break;
2980 case 32:
2981 if (depth == 24)
04b3924d 2982 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 2983 else if (depth == 30)
04b3924d 2984 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 2985 else
04b3924d 2986 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 2987 break;
2988 default:
04b3924d
VS		 2989 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2990 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 2991 break;
2992 }
2993
2994 return fmt;
2995}
2996EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2997
f453ba04
DA		 2998/**
2999 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 3000 * @dev: drm device for the ioctl
3001 * @data: data pointer for the ioctl
3002 * @file_priv: drm file for the ioctl call
f453ba04 3003 *
c8e32cc1 3004 * Add a new FB to the specified CRTC, given a user request. This is the
209f5527 3005 * original addfb ioctl which only supported RGB formats.
f453ba04
DA		 3006 *
3007 * Called by the user via ioctl.
3008 *
c8e32cc1 3009 * Returns:
1a498633 3010 * Zero on success, negative errno on failure.
f453ba04
DA		 3011 */
3012int drm_mode_addfb(struct drm_device *dev,
3013 void *data, struct drm_file *file_priv)
3014{
308e5bcb
JB		 3015 struct drm_mode_fb_cmd *or = data;
3016 struct drm_mode_fb_cmd2 r = {};
228f2cb3 3017 int ret;
308e5bcb 3018
228f2cb3 3019 /* convert to new format and call new ioctl */
308e5bcb
JB		 3020 r.fb_id = or->fb_id;
3021 r.width = or->width;
3022 r.height = or->height;
3023 r.pitches[0] = or->pitch;
3024 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3025 r.handles[0] = or->handle;
3026
228f2cb3
CE		 3027 ret = drm_mode_addfb2(dev, &r, file_priv);
3028 if (ret)
3029 return ret;
308e5bcb 3030
228f2cb3 3031 or->fb_id = r.fb_id;
4b096ac1 3032
baf698b0 3033 return 0;
308e5bcb
JB		 3034}
3035
cff91b62 3036static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 3037{
3038 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3039
3040 switch (format) {
3041 case DRM_FORMAT_C8:
3042 case DRM_FORMAT_RGB332:
3043 case DRM_FORMAT_BGR233:
3044 case DRM_FORMAT_XRGB4444:
3045 case DRM_FORMAT_XBGR4444:
3046 case DRM_FORMAT_RGBX4444:
3047 case DRM_FORMAT_BGRX4444:
3048 case DRM_FORMAT_ARGB4444:
3049 case DRM_FORMAT_ABGR4444:
3050 case DRM_FORMAT_RGBA4444:
3051 case DRM_FORMAT_BGRA4444:
3052 case DRM_FORMAT_XRGB1555:
3053 case DRM_FORMAT_XBGR1555:
3054 case DRM_FORMAT_RGBX5551:
3055 case DRM_FORMAT_BGRX5551:
3056 case DRM_FORMAT_ARGB1555:
3057 case DRM_FORMAT_ABGR1555:
3058 case DRM_FORMAT_RGBA5551:
3059 case DRM_FORMAT_BGRA5551:
3060 case DRM_FORMAT_RGB565:
3061 case DRM_FORMAT_BGR565:
3062 case DRM_FORMAT_RGB888:
3063 case DRM_FORMAT_BGR888:
3064 case DRM_FORMAT_XRGB8888:
3065 case DRM_FORMAT_XBGR8888:
3066 case DRM_FORMAT_RGBX8888:
3067 case DRM_FORMAT_BGRX8888:
3068 case DRM_FORMAT_ARGB8888:
3069 case DRM_FORMAT_ABGR8888:
3070 case DRM_FORMAT_RGBA8888:
3071 case DRM_FORMAT_BGRA8888:
3072 case DRM_FORMAT_XRGB2101010:
3073 case DRM_FORMAT_XBGR2101010:
3074 case DRM_FORMAT_RGBX1010102:
3075 case DRM_FORMAT_BGRX1010102:
3076 case DRM_FORMAT_ARGB2101010:
3077 case DRM_FORMAT_ABGR2101010:
3078 case DRM_FORMAT_RGBA1010102:
3079 case DRM_FORMAT_BGRA1010102:
3080 case DRM_FORMAT_YUYV:
3081 case DRM_FORMAT_YVYU:
3082 case DRM_FORMAT_UYVY:
3083 case DRM_FORMAT_VYUY:
3084 case DRM_FORMAT_AYUV:
3085 case DRM_FORMAT_NV12:
3086 case DRM_FORMAT_NV21:
3087 case DRM_FORMAT_NV16:
3088 case DRM_FORMAT_NV61:
ba623f6a
LP		 3089 case DRM_FORMAT_NV24:
3090 case DRM_FORMAT_NV42:
935b5977
VS		 3091 case DRM_FORMAT_YUV410:
3092 case DRM_FORMAT_YVU410:
3093 case DRM_FORMAT_YUV411:
3094 case DRM_FORMAT_YVU411:
3095 case DRM_FORMAT_YUV420:
3096 case DRM_FORMAT_YVU420:
3097 case DRM_FORMAT_YUV422:
3098 case DRM_FORMAT_YVU422:
3099 case DRM_FORMAT_YUV444:
3100 case DRM_FORMAT_YVU444:
3101 return 0;
3102 default:
23c453a4
VS		 3103 DRM_DEBUG_KMS("invalid pixel format %s\n",
3104 drm_get_format_name(r->pixel_format));
935b5977
VS		 3105 return -EINVAL;
3106 }
3107}
3108
cff91b62 3109static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 3110{
3111 int ret, hsub, vsub, num_planes, i;
3112
3113 ret = format_check(r);
3114 if (ret) {
6ba6d03e
VS		 3115 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3116 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 3117 return ret;
3118 }
3119
3120 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3121 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3122 num_planes = drm_format_num_planes(r->pixel_format);
3123
3124 if (r->width == 0 || r->width % hsub) {
209f5527 3125 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
d1b45d5f
VS		 3126 return -EINVAL;
3127 }
3128
3129 if (r->height == 0 || r->height % vsub) {
1aa1b11c 3130 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 3131 return -EINVAL;
3132 }
3133
3134 for (i = 0; i < num_planes; i++) {
3135 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 3136 unsigned int height = r->height / (i != 0 ? vsub : 1);
3137 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 3138
3139 if (!r->handles[i]) {
1aa1b11c 3140 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 3141 return -EINVAL;
3142 }
3143
b180b5d1
VS		 3144 if ((uint64_t) width * cpp > UINT_MAX)
3145 return -ERANGE;
3146
3147 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3148 return -ERANGE;
3149
3150 if (r->pitches[i] < width * cpp) {
1aa1b11c 3151 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 3152 return -EINVAL;
3153 }
3154 }
3155
3156 return 0;
3157}
3158
c394c2b0
MR		 3159static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3160 struct drm_mode_fb_cmd2 *r,
3161 struct drm_file *file_priv)
308e5bcb 3162{
f453ba04
DA		 3163 struct drm_mode_config *config = &dev->mode_config;
3164 struct drm_framebuffer *fb;
4a1b0714 3165 int ret;
f453ba04 3166
e3cc3520
VS		 3167 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3168 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
c394c2b0 3169 return ERR_PTR(-EINVAL);
e3cc3520
VS		 3170 }
3171
f453ba04 3172 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 3173 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 3174 r->width, config->min_width, config->max_width);
c394c2b0 3175 return ERR_PTR(-EINVAL);
f453ba04
DA		 3176 }
3177 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 3178 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 3179 r->height, config->min_height, config->max_height);
c394c2b0 3180 return ERR_PTR(-EINVAL);
f453ba04
DA		 3181 }
3182
d1b45d5f
VS		 3183 ret = framebuffer_check(r);
3184 if (ret)
c394c2b0 3185 return ERR_PTR(ret);
935b5977 3186
f453ba04 3187 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 3188 if (IS_ERR(fb)) {
1aa1b11c 3189 DRM_DEBUG_KMS("could not create framebuffer\n");
c394c2b0 3190 return fb;
f453ba04
DA		 3191 }
3192
4b096ac1 3193 mutex_lock(&file_priv->fbs_lock);
e0c8463a 3194 r->fb_id = fb->base.id;
f453ba04 3195 list_add(&fb->filp_head, &file_priv->fbs);
9440106b 3196 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
4b096ac1 3197 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3198
c394c2b0
MR		 3199 return fb;
3200}
4b096ac1 3201
c394c2b0
MR		 3202/**
3203 * drm_mode_addfb2 - add an FB to the graphics configuration
3204 * @dev: drm device for the ioctl
3205 * @data: data pointer for the ioctl
3206 * @file_priv: drm file for the ioctl call
3207 *
3208 * Add a new FB to the specified CRTC, given a user request with format. This is
3209 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3210 * and uses fourcc codes as pixel format specifiers.
3211 *
3212 * Called by the user via ioctl.
3213 *
3214 * Returns:
1a498633 3215 * Zero on success, negative errno on failure.
c394c2b0
MR		 3216 */
3217int drm_mode_addfb2(struct drm_device *dev,
3218 void *data, struct drm_file *file_priv)
3219{
3220 struct drm_framebuffer *fb;
3221
3222 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3223 return -EINVAL;
3224
3225 fb = add_framebuffer_internal(dev, data, file_priv);
3226 if (IS_ERR(fb))
3227 return PTR_ERR(fb);
3228
3229 return 0;
f453ba04
DA		 3230}
3231
3232/**
3233 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 3234 * @dev: drm device for the ioctl
3235 * @data: data pointer for the ioctl
3236 * @file_priv: drm file for the ioctl call
f453ba04 3237 *
f453ba04
DA		 3238 * Remove the FB specified by the user.
3239 *
3240 * Called by the user via ioctl.
3241 *
c8e32cc1 3242 * Returns:
1a498633 3243 * Zero on success, negative errno on failure.
f453ba04
DA		 3244 */
3245int drm_mode_rmfb(struct drm_device *dev,
3246 void *data, struct drm_file *file_priv)
3247{
f453ba04
DA		 3248 struct drm_framebuffer *fb = NULL;
3249 struct drm_framebuffer *fbl = NULL;
3250 uint32_t *id = data;
f453ba04
DA		 3251 int found = 0;
3252
fb3b06c8
DA		 3253 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3254 return -EINVAL;
3255
4b096ac1 3256 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 3257 mutex_lock(&dev->mode_config.fb_lock);
3258 fb = __drm_framebuffer_lookup(dev, *id);
3259 if (!fb)
3260 goto fail_lookup;
3261
f453ba04
DA		 3262 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3263 if (fb == fbl)
3264 found = 1;
2b677e8c
DV		 3265 if (!found)
3266 goto fail_lookup;
3267
3268 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3269 __drm_framebuffer_unregister(dev, fb);
f453ba04 3270
4b096ac1 3271 list_del_init(&fb->filp_head);
2b677e8c 3272 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 3273 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3274
4b096ac1 3275 drm_framebuffer_remove(fb);
4b096ac1 3276
2b677e8c
DV		 3277 return 0;
3278
3279fail_lookup:
3280 mutex_unlock(&dev->mode_config.fb_lock);
3281 mutex_unlock(&file_priv->fbs_lock);
3282
37c4e705 3283 return -ENOENT;
f453ba04
DA		 3284}
3285
3286/**
3287 * drm_mode_getfb - get FB info
065a50ed
DV		 3288 * @dev: drm device for the ioctl
3289 * @data: data pointer for the ioctl
3290 * @file_priv: drm file for the ioctl call
f453ba04 3291 *
f453ba04
DA		 3292 * Lookup the FB given its ID and return info about it.
3293 *
3294 * Called by the user via ioctl.
3295 *
c8e32cc1 3296 * Returns:
1a498633 3297 * Zero on success, negative errno on failure.
f453ba04
DA		 3298 */
3299int drm_mode_getfb(struct drm_device *dev,
3300 void *data, struct drm_file *file_priv)
3301{
3302 struct drm_mode_fb_cmd *r = data;
f453ba04 3303 struct drm_framebuffer *fb;
58c0dca1 3304 int ret;
f453ba04 3305
fb3b06c8
DA		 3306 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3307 return -EINVAL;
3308
786b99ed 3309 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 3310 if (!fb)
37c4e705 3311 return -ENOENT;
f453ba04
DA		 3312
3313 r->height = fb->height;
3314 r->width = fb->width;
3315 r->depth = fb->depth;
3316 r->bpp = fb->bits_per_pixel;
01f2c773 3317 r->pitch = fb->pitches[0];
101b96f3 3318 if (fb->funcs->create_handle) {
09f308f7 3319 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 3320 drm_is_control_client(file_priv)) {
101b96f3
DH		 3321 ret = fb->funcs->create_handle(fb, file_priv,
3322 &r->handle);
3323 } else {
3324 /* GET_FB() is an unprivileged ioctl so we must not
3325 * return a buffer-handle to non-master processes! For
3326 * backwards-compatibility reasons, we cannot make
3327 * GET_FB() privileged, so just return an invalid handle
3328 * for non-masters. */
3329 r->handle = 0;
3330 ret = 0;
3331 }
3332 } else {
af26ef3b 3333 ret = -ENODEV;
101b96f3 3334 }
f453ba04 3335
58c0dca1
DV		 3336 drm_framebuffer_unreference(fb);
3337
f453ba04
DA		 3338 return ret;
3339}
3340
c8e32cc1
DV		 3341/**
3342 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3343 * @dev: drm device for the ioctl
3344 * @data: data pointer for the ioctl
3345 * @file_priv: drm file for the ioctl call
3346 *
3347 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3348 * rectangle list. Generic userspace which does frontbuffer rendering must call
3349 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3350 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3351 *
3352 * Modesetting drivers which always update the frontbuffer do not need to
3353 * implement the corresponding ->dirty framebuffer callback.
3354 *
3355 * Called by the user via ioctl.
3356 *
3357 * Returns:
1a498633 3358 * Zero on success, negative errno on failure.
c8e32cc1 3359 */
884840aa
JB		 3360int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3361 void *data, struct drm_file *file_priv)
3362{
3363 struct drm_clip_rect __user *clips_ptr;
3364 struct drm_clip_rect *clips = NULL;
3365 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 3366 struct drm_framebuffer *fb;
3367 unsigned flags;
3368 int num_clips;
4a1b0714 3369 int ret;
884840aa 3370
fb3b06c8
DA		 3371 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3372 return -EINVAL;
3373
786b99ed 3374 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 3375 if (!fb)
37c4e705 3376 return -ENOENT;
884840aa
JB		 3377
3378 num_clips = r->num_clips;
81f6c7f8 3379 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 3380
3381 if (!num_clips != !clips_ptr) {
3382 ret = -EINVAL;
3383 goto out_err1;
3384 }
3385
3386 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3387
3388 /* If userspace annotates copy, clips must come in pairs */
3389 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3390 ret = -EINVAL;
3391 goto out_err1;
3392 }
3393
3394 if (num_clips && clips_ptr) {
a5cd3351
XW		 3395 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3396 ret = -EINVAL;
3397 goto out_err1;
3398 }
884840aa
JB		 3399 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3400 if (!clips) {
3401 ret = -ENOMEM;
3402 goto out_err1;
3403 }
3404
3405 ret = copy_from_user(clips, clips_ptr,
3406 num_clips * sizeof(*clips));
e902a358
DC		 3407 if (ret) {
3408 ret = -EFAULT;
884840aa 3409 goto out_err2;
e902a358 3410 }
884840aa
JB		 3411 }
3412
3413 if (fb->funcs->dirty) {
02b00162
TH		 3414 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3415 clips, num_clips);
884840aa
JB		 3416 } else {
3417 ret = -ENOSYS;
884840aa
JB		 3418 }
3419
3420out_err2:
3421 kfree(clips);
3422out_err1:
4ccf097f
DV		 3423 drm_framebuffer_unreference(fb);
3424
884840aa
JB		 3425 return ret;
3426}
3427
3428
f453ba04
DA		 3429/**
3430 * drm_fb_release - remove and free the FBs on this file
065a50ed 3431 * @priv: drm file for the ioctl
f453ba04 3432 *
f453ba04
DA		 3433 * Destroy all the FBs associated with @filp.
3434 *
3435 * Called by the user via ioctl.
3436 *
c8e32cc1 3437 * Returns:
1a498633 3438 * Zero on success, negative errno on failure.
f453ba04 3439 */
ea39f835 3440void drm_fb_release(struct drm_file *priv)
f453ba04 3441{
f453ba04
DA		 3442 struct drm_device *dev = priv->minor->dev;
3443 struct drm_framebuffer *fb, *tfb;
3444
1b116297
DV		 3445 /*
3446 * When the file gets released that means no one else can access the fb
3447 * list any more, so no need to grab fpriv->fbs_lock. And we need to to
3448 * avoid upsetting lockdep since the universal cursor code adds a
3449 * framebuffer while holding mutex locks.
3450 *
3451 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3452 * locks is impossible here since no one else but this function can get
3453 * at it any more.
3454 */
f453ba04 3455 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2b677e8c
DV		 3456
3457 mutex_lock(&dev->mode_config.fb_lock);
3458 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3459 __drm_framebuffer_unregister(dev, fb);
3460 mutex_unlock(&dev->mode_config.fb_lock);
3461
4b096ac1 3462 list_del_init(&fb->filp_head);
2b677e8c
DV		 3463
3464 /* This will also drop the fpriv->fbs reference. */
f7eff60e 3465 drm_framebuffer_remove(fb);
f453ba04 3466 }
f453ba04
DA		 3467}
3468
c8e32cc1
DV		 3469/**
3470 * drm_property_create - create a new property type
3471 * @dev: drm device
3472 * @flags: flags specifying the property type
3473 * @name: name of the property
3474 * @num_values: number of pre-defined values
3475 *
3476 * This creates a new generic drm property which can then be attached to a drm
3477 * object with drm_object_attach_property. The returned property object must be
3478 * freed with drm_property_destroy.
3479 *
3b5b9932
DL		 3480 * Note that the DRM core keeps a per-device list of properties and that, if
3481 * drm_mode_config_cleanup() is called, it will destroy all properties created
3482 * by the driver.
3483 *
c8e32cc1
DV		 3484 * Returns:
3485 * A pointer to the newly created property on success, NULL on failure.
3486 */
f453ba04
DA		 3487struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3488 const char *name, int num_values)
3489{
3490 struct drm_property *property = NULL;
6bfc56aa 3491 int ret;
f453ba04
DA		 3492
3493 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3494 if (!property)
3495 return NULL;
3496
98f75de4
RC		 3497 property->dev = dev;
3498
f453ba04
DA		 3499 if (num_values) {
3500 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3501 if (!property->values)
3502 goto fail;
3503 }
3504
6bfc56aa
VS		 3505 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3506 if (ret)
3507 goto fail;
3508
f453ba04
DA		 3509 property->flags = flags;
3510 property->num_values = num_values;
3758b341 3511 INIT_LIST_HEAD(&property->enum_list);
f453ba04 3512
471dd2ef 3513 if (name) {
f453ba04 3514 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3515 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3516 }
f453ba04
DA		 3517
3518 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3519
3520 WARN_ON(!drm_property_type_valid(property));
3521
f453ba04
DA		 3522 return property;
3523fail:
6bfc56aa 3524 kfree(property->values);
f453ba04
DA		 3525 kfree(property);
3526 return NULL;
3527}
3528EXPORT_SYMBOL(drm_property_create);
3529
c8e32cc1 3530/**
2aa9d2bc 3531 * drm_property_create_enum - create a new enumeration property type
c8e32cc1
DV		 3532 * @dev: drm device
3533 * @flags: flags specifying the property type
3534 * @name: name of the property
3535 * @props: enumeration lists with property values
3536 * @num_values: number of pre-defined values
3537 *
3538 * This creates a new generic drm property which can then be attached to a drm
3539 * object with drm_object_attach_property. The returned property object must be
3540 * freed with drm_property_destroy.
3541 *
3542 * Userspace is only allowed to set one of the predefined values for enumeration
3543 * properties.
3544 *
3545 * Returns:
3546 * A pointer to the newly created property on success, NULL on failure.
3547 */
4a67d391
SH		 3548struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3549 const char *name,
3550 const struct drm_prop_enum_list *props,
3551 int num_values)
3552{
3553 struct drm_property *property;
3554 int i, ret;
3555
3556 flags |= DRM_MODE_PROP_ENUM;
3557
3558 property = drm_property_create(dev, flags, name, num_values);
3559 if (!property)
3560 return NULL;
3561
3562 for (i = 0; i < num_values; i++) {
3563 ret = drm_property_add_enum(property, i,
3564 props[i].type,
3565 props[i].name);
3566 if (ret) {
3567 drm_property_destroy(dev, property);
3568 return NULL;
3569 }
3570 }
3571
3572 return property;
3573}
3574EXPORT_SYMBOL(drm_property_create_enum);
3575
c8e32cc1 3576/**
2aa9d2bc 3577 * drm_property_create_bitmask - create a new bitmask property type
c8e32cc1
DV		 3578 * @dev: drm device
3579 * @flags: flags specifying the property type
3580 * @name: name of the property
3581 * @props: enumeration lists with property bitflags
295ee853
DV		 3582 * @num_props: size of the @props array
3583 * @supported_bits: bitmask of all supported enumeration values
c8e32cc1 3584 *
295ee853 3585 * This creates a new bitmask drm property which can then be attached to a drm
c8e32cc1
DV		 3586 * object with drm_object_attach_property. The returned property object must be
3587 * freed with drm_property_destroy.
3588 *
3589 * Compared to plain enumeration properties userspace is allowed to set any
3590 * or'ed together combination of the predefined property bitflag values
3591 *
3592 * Returns:
3593 * A pointer to the newly created property on success, NULL on failure.
3594 */
49e27545
RC		 3595struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3596 int flags, const char *name,
3597 const struct drm_prop_enum_list *props,
7689ffb3
VS		 3598 int num_props,
3599 uint64_t supported_bits)
49e27545
RC		 3600{
3601 struct drm_property *property;
7689ffb3
VS		 3602 int i, ret, index = 0;
3603 int num_values = hweight64(supported_bits);
49e27545
RC		 3604
3605 flags |= DRM_MODE_PROP_BITMASK;
3606
3607 property = drm_property_create(dev, flags, name, num_values);
3608 if (!property)
3609 return NULL;
7689ffb3
VS		 3610 for (i = 0; i < num_props; i++) {
3611 if (!(supported_bits & (1ULL << props[i].type)))
3612 continue;
49e27545 3613
7689ffb3
VS		 3614 if (WARN_ON(index >= num_values)) {
3615 drm_property_destroy(dev, property);
3616 return NULL;
3617 }
3618
3619 ret = drm_property_add_enum(property, index++,
49e27545
RC		 3620 props[i].type,
3621 props[i].name);
3622 if (ret) {
3623 drm_property_destroy(dev, property);
3624 return NULL;
3625 }
3626 }
3627
3628 return property;
3629}
3630EXPORT_SYMBOL(drm_property_create_bitmask);
3631
ebc44cf3
RC		 3632static struct drm_property *property_create_range(struct drm_device *dev,
3633 int flags, const char *name,
3634 uint64_t min, uint64_t max)
3635{
3636 struct drm_property *property;
3637
3638 property = drm_property_create(dev, flags, name, 2);
3639 if (!property)
3640 return NULL;
3641
3642 property->values[0] = min;
3643 property->values[1] = max;
3644
3645 return property;
3646}
3647
c8e32cc1 3648/**
2aa9d2bc 3649 * drm_property_create_range - create a new ranged property type
c8e32cc1
DV		 3650 * @dev: drm device
3651 * @flags: flags specifying the property type
3652 * @name: name of the property
3653 * @min: minimum value of the property
3654 * @max: maximum value of the property
3655 *
3656 * This creates a new generic drm property which can then be attached to a drm
3657 * object with drm_object_attach_property. The returned property object must be
3658 * freed with drm_property_destroy.
3659 *
32197aab 3660 * Userspace is allowed to set any integer value in the (min, max) range
c8e32cc1
DV		 3661 * inclusive.
3662 *
3663 * Returns:
3664 * A pointer to the newly created property on success, NULL on failure.
3665 */
d9bc3c02
SH		 3666struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3667 const char *name,
3668 uint64_t min, uint64_t max)
3669{
ebc44cf3
RC		 3670 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3671 name, min, max);
d9bc3c02
SH		 3672}
3673EXPORT_SYMBOL(drm_property_create_range);
3674
ebc44cf3
RC		 3675struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3676 int flags, const char *name,
3677 int64_t min, int64_t max)
3678{
3679 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3680 name, I642U64(min), I642U64(max));
3681}
3682EXPORT_SYMBOL(drm_property_create_signed_range);
3683
98f75de4
RC		 3684struct drm_property *drm_property_create_object(struct drm_device *dev,
3685 int flags, const char *name, uint32_t type)
3686{
3687 struct drm_property *property;
3688
3689 flags |= DRM_MODE_PROP_OBJECT;
3690
3691 property = drm_property_create(dev, flags, name, 1);
3692 if (!property)
3693 return NULL;
3694
3695 property->values[0] = type;
3696
3697 return property;
3698}
3699EXPORT_SYMBOL(drm_property_create_object);
3700
c8e32cc1
DV		 3701/**
3702 * drm_property_add_enum - add a possible value to an enumeration property
3703 * @property: enumeration property to change
3704 * @index: index of the new enumeration
3705 * @value: value of the new enumeration
3706 * @name: symbolic name of the new enumeration
3707 *
3708 * This functions adds enumerations to a property.
3709 *
3710 * It's use is deprecated, drivers should use one of the more specific helpers
3711 * to directly create the property with all enumerations already attached.
3712 *
3713 * Returns:
3714 * Zero on success, error code on failure.
3715 */
f453ba04
DA		 3716int drm_property_add_enum(struct drm_property *property, int index,
3717 uint64_t value, const char *name)
3718{
3719 struct drm_property_enum *prop_enum;
3720
5ea22f24
RC		 3721 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3722 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 3723 return -EINVAL;
3724
3725 /*
3726 * Bitmask enum properties have the additional constraint of values
3727 * from 0 to 63
3728 */
5ea22f24
RC		 3729 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3730 (value > 63))
f453ba04
DA		 3731 return -EINVAL;
3732
3758b341
DV		 3733 if (!list_empty(&property->enum_list)) {
3734 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 3735 if (prop_enum->value == value) {
3736 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3737 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3738 return 0;
3739 }
3740 }
3741 }
3742
3743 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3744 if (!prop_enum)
3745 return -ENOMEM;
3746
3747 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3748 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3749 prop_enum->value = value;
3750
3751 property->values[index] = value;
3758b341 3752 list_add_tail(&prop_enum->head, &property->enum_list);
f453ba04
DA		 3753 return 0;
3754}
3755EXPORT_SYMBOL(drm_property_add_enum);
3756
c8e32cc1
DV		 3757/**
3758 * drm_property_destroy - destroy a drm property
3759 * @dev: drm device
3760 * @property: property to destry
3761 *
3762 * This function frees a property including any attached resources like
3763 * enumeration values.
3764 */
f453ba04
DA		 3765void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3766{
3767 struct drm_property_enum *prop_enum, *pt;
3768
3758b341 3769 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
f453ba04
DA		 3770 list_del(&prop_enum->head);
3771 kfree(prop_enum);
3772 }
3773
3774 if (property->num_values)
3775 kfree(property->values);
3776 drm_mode_object_put(dev, &property->base);
3777 list_del(&property->head);
3778 kfree(property);
3779}
3780EXPORT_SYMBOL(drm_property_destroy);
3781
c8e32cc1
DV		 3782/**
3783 * drm_object_attach_property - attach a property to a modeset object
3784 * @obj: drm modeset object
3785 * @property: property to attach
3786 * @init_val: initial value of the property
3787 *
3788 * This attaches the given property to the modeset object with the given initial
3789 * value. Currently this function cannot fail since the properties are stored in
3790 * a statically sized array.
3791 */
c543188a
PZ		 3792void drm_object_attach_property(struct drm_mode_object *obj,
3793 struct drm_property *property,
3794 uint64_t init_val)
3795{
7f88a9be 3796 int count = obj->properties->count;
c543188a 3797
7f88a9be
PZ		 3798 if (count == DRM_OBJECT_MAX_PROPERTY) {
3799 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3800 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3801 "you see this message on the same object type.\n",
3802 obj->type);
3803 return;
c543188a
PZ		 3804 }
3805
7f88a9be
PZ		 3806 obj->properties->ids[count] = property->base.id;
3807 obj->properties->values[count] = init_val;
3808 obj->properties->count++;
c543188a
PZ		 3809}
3810EXPORT_SYMBOL(drm_object_attach_property);
3811
c8e32cc1
DV		 3812/**
3813 * drm_object_property_set_value - set the value of a property
3814 * @obj: drm mode object to set property value for
3815 * @property: property to set
3816 * @val: value the property should be set to
3817 *
3818 * This functions sets a given property on a given object. This function only
3819 * changes the software state of the property, it does not call into the
3820 * driver's ->set_property callback.
3821 *
3822 * Returns:
3823 * Zero on success, error code on failure.
3824 */
c543188a
PZ		 3825int drm_object_property_set_value(struct drm_mode_object *obj,
3826 struct drm_property *property, uint64_t val)
3827{
3828 int i;
3829
7f88a9be 3830 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 3831 if (obj->properties->ids[i] == property->base.id) {
3832 obj->properties->values[i] = val;
3833 return 0;
3834 }
3835 }
3836
3837 return -EINVAL;
3838}
3839EXPORT_SYMBOL(drm_object_property_set_value);
3840
c8e32cc1
DV		 3841/**
3842 * drm_object_property_get_value - retrieve the value of a property
3843 * @obj: drm mode object to get property value from
3844 * @property: property to retrieve
3845 * @val: storage for the property value
3846 *
3847 * This function retrieves the softare state of the given property for the given
3848 * property. Since there is no driver callback to retrieve the current property
3849 * value this might be out of sync with the hardware, depending upon the driver
3850 * and property.
3851 *
3852 * Returns:
3853 * Zero on success, error code on failure.
3854 */
c543188a
PZ		 3855int drm_object_property_get_value(struct drm_mode_object *obj,
3856 struct drm_property *property, uint64_t *val)
3857{
3858 int i;
3859
7f88a9be 3860 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 3861 if (obj->properties->ids[i] == property->base.id) {
3862 *val = obj->properties->values[i];
3863 return 0;
3864 }
3865 }
3866
3867 return -EINVAL;
3868}
3869EXPORT_SYMBOL(drm_object_property_get_value);
3870
c8e32cc1 3871/**
1a498633 3872 * drm_mode_getproperty_ioctl - get the property metadata
c8e32cc1
DV		 3873 * @dev: DRM device
3874 * @data: ioctl data
3875 * @file_priv: DRM file info
3876 *
1a498633
DV		 3877 * This function retrieves the metadata for a given property, like the different
3878 * possible values for an enum property or the limits for a range property.
3879 *
3880 * Blob properties are special
c8e32cc1
DV		 3881 *
3882 * Called by the user via ioctl.
3883 *
3884 * Returns:
1a498633 3885 * Zero on success, negative errno on failure.
c8e32cc1 3886 */
f453ba04
DA		 3887int drm_mode_getproperty_ioctl(struct drm_device *dev,
3888 void *data, struct drm_file *file_priv)
3889{
f453ba04
DA		 3890 struct drm_mode_get_property *out_resp = data;
3891 struct drm_property *property;
3892 int enum_count = 0;
f453ba04
DA		 3893 int value_count = 0;
3894 int ret = 0, i;
3895 int copied;
3896 struct drm_property_enum *prop_enum;
3897 struct drm_mode_property_enum __user *enum_ptr;
f453ba04 3898 uint64_t __user *values_ptr;
f453ba04 3899
fb3b06c8
DA		 3900 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3901 return -EINVAL;
3902
84849903 3903 drm_modeset_lock_all(dev);
a2b34e22
RC		 3904 property = drm_property_find(dev, out_resp->prop_id);
3905 if (!property) {
f27657f2 3906 ret = -ENOENT;
f453ba04
DA		 3907 goto done;
3908 }
f453ba04 3909
5ea22f24
RC		 3910 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3911 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3758b341 3912 list_for_each_entry(prop_enum, &property->enum_list, head)
f453ba04 3913 enum_count++;
f453ba04
DA		 3914 }
3915
3916 value_count = property->num_values;
3917
3918 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3919 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3920 out_resp->flags = property->flags;
3921
3922 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 3923 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 3924 for (i = 0; i < value_count; i++) {
3925 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3926 ret = -EFAULT;
3927 goto done;
3928 }
3929 }
3930 }
3931 out_resp->count_values = value_count;
3932
5ea22f24
RC		 3933 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3934 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 3935 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3936 copied = 0;
81f6c7f8 3937 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3758b341 3938 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 3939
3940 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3941 ret = -EFAULT;
3942 goto done;
3943 }
3944
3945 if (copy_to_user(&enum_ptr[copied].name,
3946 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3947 ret = -EFAULT;
3948 goto done;
3949 }
3950 copied++;
3951 }
3952 }
3953 out_resp->count_enum_blobs = enum_count;
3954 }
3955
3758b341
DV		 3956 /*
3957 * NOTE: The idea seems to have been to use this to read all the blob
3958 * property values. But nothing ever added them to the corresponding
3959 * list, userspace always used the special-purpose get_blob ioctl to
3960 * read the value for a blob property. It also doesn't make a lot of
3961 * sense to return values here when everything else is just metadata for
3962 * the property itself.
3963 */
3964 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
3965 out_resp->count_enum_blobs = 0;
f453ba04 3966done:
84849903 3967 drm_modeset_unlock_all(dev);
f453ba04
DA		 3968 return ret;
3969}
3970
ecbbe59b
TR		 3971static struct drm_property_blob *
3972drm_property_create_blob(struct drm_device *dev, size_t length,
12e6cecd 3973 const void *data)
f453ba04
DA		 3974{
3975 struct drm_property_blob *blob;
6bfc56aa 3976 int ret;
f453ba04
DA		 3977
3978 if (!length || !data)
3979 return NULL;
3980
3981 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3982 if (!blob)
3983 return NULL;
3984
6bfc56aa
VS		 3985 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3986 if (ret) {
3987 kfree(blob);
3988 return NULL;
3989 }
3990
f453ba04
DA		 3991 blob->length = length;
3992
3993 memcpy(blob->data, data, length);
3994
f453ba04
DA		 3995 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3996 return blob;
3997}
3998
3999static void drm_property_destroy_blob(struct drm_device *dev,
4000 struct drm_property_blob *blob)
4001{
4002 drm_mode_object_put(dev, &blob->base);
4003 list_del(&blob->head);
4004 kfree(blob);
4005}
4006
c8e32cc1
DV		 4007/**
4008 * drm_mode_getblob_ioctl - get the contents of a blob property value
4009 * @dev: DRM device
4010 * @data: ioctl data
4011 * @file_priv: DRM file info
4012 *
4013 * This function retrieves the contents of a blob property. The value stored in
4014 * an object's blob property is just a normal modeset object id.
4015 *
4016 * Called by the user via ioctl.
4017 *
4018 * Returns:
1a498633 4019 * Zero on success, negative errno on failure.
c8e32cc1 4020 */
f453ba04
DA		 4021int drm_mode_getblob_ioctl(struct drm_device *dev,
4022 void *data, struct drm_file *file_priv)
4023{
f453ba04
DA		 4024 struct drm_mode_get_blob *out_resp = data;
4025 struct drm_property_blob *blob;
4026 int ret = 0;
81f6c7f8 4027 void __user *blob_ptr;
f453ba04 4028
fb3b06c8
DA		 4029 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4030 return -EINVAL;
4031
84849903 4032 drm_modeset_lock_all(dev);
a2b34e22
RC		 4033 blob = drm_property_blob_find(dev, out_resp->blob_id);
4034 if (!blob) {
f27657f2 4035 ret = -ENOENT;
f453ba04
DA		 4036 goto done;
4037 }
f453ba04
DA		 4038
4039 if (out_resp->length == blob->length) {
81f6c7f8 4040 blob_ptr = (void __user *)(unsigned long)out_resp->data;
f453ba04
DA		 4041 if (copy_to_user(blob_ptr, blob->data, blob->length)){
4042 ret = -EFAULT;
4043 goto done;
4044 }
4045 }
4046 out_resp->length = blob->length;
4047
4048done:
84849903 4049 drm_modeset_unlock_all(dev);
f453ba04
DA		 4050 return ret;
4051}
4052
cc7096fb
DA		 4053/**
4054 * drm_mode_connector_set_path_property - set tile property on connector
4055 * @connector: connector to set property on.
4056 * @path: path to use for property.
4057 *
4058 * This creates a property to expose to userspace to specify a
4059 * connector path. This is mainly used for DisplayPort MST where
4060 * connectors have a topology and we want to allow userspace to give
4061 * them more meaningful names.
4062 *
4063 * Returns:
1a498633 4064 * Zero on success, negative errno on failure.
cc7096fb 4065 */
43aba7eb 4066int drm_mode_connector_set_path_property(struct drm_connector *connector,
12e6cecd 4067 const char *path)
43aba7eb
DA		 4068{
4069 struct drm_device *dev = connector->dev;
ecbbe59b
TR		 4070 size_t size = strlen(path) + 1;
4071 int ret;
43aba7eb
DA		 4072
4073 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4074 size, path);
4075 if (!connector->path_blob_ptr)
4076 return -EINVAL;
4077
4078 ret = drm_object_property_set_value(&connector->base,
4079 dev->mode_config.path_property,
4080 connector->path_blob_ptr->base.id);
4081 return ret;
4082}
4083EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4084
c8e32cc1
DV		 4085/**
4086 * drm_mode_connector_update_edid_property - update the edid property of a connector
4087 * @connector: drm connector
4088 * @edid: new value of the edid property
4089 *
4090 * This function creates a new blob modeset object and assigns its id to the
4091 * connector's edid property.
4092 *
4093 * Returns:
1a498633 4094 * Zero on success, negative errno on failure.
c8e32cc1 4095 */
f453ba04 4096int drm_mode_connector_update_edid_property(struct drm_connector *connector,
12e6cecd 4097 const struct edid *edid)
f453ba04
DA		 4098{
4099 struct drm_device *dev = connector->dev;
ecbbe59b
TR		 4100 size_t size;
4101 int ret;
f453ba04 4102
4cf2b281
TW		 4103 /* ignore requests to set edid when overridden */
4104 if (connector->override_edid)
4105 return 0;
4106
f453ba04
DA		 4107 if (connector->edid_blob_ptr)
4108 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4109
4110 /* Delete edid, when there is none. */
4111 if (!edid) {
4112 connector->edid_blob_ptr = NULL;
58495563 4113 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
f453ba04
DA		 4114 return ret;
4115 }
4116
7466f4cc
AJ		 4117 size = EDID_LENGTH * (1 + edid->extensions);
4118 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4119 size, edid);
e655d122
SK		 4120 if (!connector->edid_blob_ptr)
4121 return -EINVAL;
f453ba04 4122
58495563 4123 ret = drm_object_property_set_value(&connector->base,
f453ba04
DA		 4124 dev->mode_config.edid_property,
4125 connector->edid_blob_ptr->base.id);
4126
4127 return ret;
4128}
4129EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4130
26a34815 4131static bool drm_property_change_is_valid(struct drm_property *property,
592c20ee 4132 uint64_t value)
26a34815
PZ		 4133{
4134 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4135 return false;
5ea22f24
RC		 4136
4137 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 4138 if (value < property->values[0] || value > property->values[1])
4139 return false;
4140 return true;
ebc44cf3
RC		 4141 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4142 int64_t svalue = U642I64(value);
4143 if (svalue < U642I64(property->values[0]) ||
4144 svalue > U642I64(property->values[1]))
4145 return false;
4146 return true;
5ea22f24 4147 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
49e27545 4148 int i;
592c20ee 4149 uint64_t valid_mask = 0;
49e27545
RC		 4150 for (i = 0; i < property->num_values; i++)
4151 valid_mask |= (1ULL << property->values[i]);
4152 return !(value & ~valid_mask);
5ea22f24 4153 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
c4a56750
VS		 4154 /* Only the driver knows */
4155 return true;
98f75de4
RC		 4156 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4157 struct drm_mode_object *obj;
4158 /* a zero value for an object property translates to null: */
4159 if (value == 0)
4160 return true;
4161 /*
4162 * NOTE: use _object_find() directly to bypass restriction on
4163 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4164 * object this could race against object finalization, so it
4165 * simply tells us that the object *was* valid. Which is good
4166 * enough.
4167 */
4168 obj = _object_find(property->dev, value, property->values[0]);
4169 return obj != NULL;
26a34815
PZ		 4170 } else {
4171 int i;
4172 for (i = 0; i < property->num_values; i++)
4173 if (property->values[i] == value)
4174 return true;
4175 return false;
4176 }
4177}
4178
c8e32cc1
DV		 4179/**
4180 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4181 * @dev: DRM device
4182 * @data: ioctl data
4183 * @file_priv: DRM file info
4184 *
4185 * This function sets the current value for a connectors's property. It also
4186 * calls into a driver's ->set_property callback to update the hardware state
4187 *
4188 * Called by the user via ioctl.
4189 *
4190 * Returns:
1a498633 4191 * Zero on success, negative errno on failure.
c8e32cc1 4192 */
f453ba04
DA		 4193int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4194 void *data, struct drm_file *file_priv)
4195{
0057d8dd
PZ		 4196 struct drm_mode_connector_set_property *conn_set_prop = data;
4197 struct drm_mode_obj_set_property obj_set_prop = {
4198 .value = conn_set_prop->value,
4199 .prop_id = conn_set_prop->prop_id,
4200 .obj_id = conn_set_prop->connector_id,
4201 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4202 };
fb3b06c8 4203
0057d8dd
PZ		 4204 /* It does all the locking and checking we need */
4205 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 4206}
4207
c543188a
PZ		 4208static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4209 struct drm_property *property,
4210 uint64_t value)
4211{
4212 int ret = -EINVAL;
4213 struct drm_connector *connector = obj_to_connector(obj);
4214
4215 /* Do DPMS ourselves */
4216 if (property == connector->dev->mode_config.dpms_property) {
4217 if (connector->funcs->dpms)
4218 (*connector->funcs->dpms)(connector, (int)value);
4219 ret = 0;
4220 } else if (connector->funcs->set_property)
4221 ret = connector->funcs->set_property(connector, property, value);
4222
4223 /* store the property value if successful */
4224 if (!ret)
58495563 4225 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 4226 return ret;
4227}
4228
bffd9de0
PZ		 4229static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4230 struct drm_property *property,
4231 uint64_t value)
4232{
4233 int ret = -EINVAL;
4234 struct drm_crtc *crtc = obj_to_crtc(obj);
4235
4236 if (crtc->funcs->set_property)
4237 ret = crtc->funcs->set_property(crtc, property, value);
4238 if (!ret)
4239 drm_object_property_set_value(obj, property, value);
4240
4241 return ret;
4242}
4243
3a5f87c2
TW		 4244/**
4245 * drm_mode_plane_set_obj_prop - set the value of a property
4246 * @plane: drm plane object to set property value for
4247 * @property: property to set
4248 * @value: value the property should be set to
4249 *
4250 * This functions sets a given property on a given plane object. This function
4251 * calls the driver's ->set_property callback and changes the software state of
4252 * the property if the callback succeeds.
4253 *
4254 * Returns:
4255 * Zero on success, error code on failure.
4256 */
4257int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4258 struct drm_property *property,
4259 uint64_t value)
4d93914a
RC		 4260{
4261 int ret = -EINVAL;
3a5f87c2 4262 struct drm_mode_object *obj = &plane->base;
4d93914a
RC		 4263
4264 if (plane->funcs->set_property)
4265 ret = plane->funcs->set_property(plane, property, value);
4266 if (!ret)
4267 drm_object_property_set_value(obj, property, value);
4268
4269 return ret;
4270}
3a5f87c2 4271EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4d93914a 4272
c8e32cc1 4273/**
1a498633 4274 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
c8e32cc1
DV		 4275 * @dev: DRM device
4276 * @data: ioctl data
4277 * @file_priv: DRM file info
4278 *
4279 * This function retrieves the current value for an object's property. Compared
4280 * to the connector specific ioctl this one is extended to also work on crtc and
4281 * plane objects.
4282 *
4283 * Called by the user via ioctl.
4284 *
4285 * Returns:
1a498633 4286 * Zero on success, negative errno on failure.
c8e32cc1 4287 */
c543188a
PZ		 4288int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4289 struct drm_file *file_priv)
4290{
4291 struct drm_mode_obj_get_properties *arg = data;
4292 struct drm_mode_object *obj;
4293 int ret = 0;
4294 int i;
4295 int copied = 0;
4296 int props_count = 0;
4297 uint32_t __user *props_ptr;
4298 uint64_t __user *prop_values_ptr;
4299
4300 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4301 return -EINVAL;
4302
84849903 4303 drm_modeset_lock_all(dev);
c543188a
PZ		 4304
4305 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4306 if (!obj) {
f27657f2 4307 ret = -ENOENT;
c543188a
PZ		 4308 goto out;
4309 }
4310 if (!obj->properties) {
4311 ret = -EINVAL;
4312 goto out;
4313 }
4314
7f88a9be 4315 props_count = obj->properties->count;
c543188a
PZ		 4316
4317 /* This ioctl is called twice, once to determine how much space is
4318 * needed, and the 2nd time to fill it. */
4319 if ((arg->count_props >= props_count) && props_count) {
4320 copied = 0;
4321 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4322 prop_values_ptr = (uint64_t __user *)(unsigned long)
4323 (arg->prop_values_ptr);
4324 for (i = 0; i < props_count; i++) {
4325 if (put_user(obj->properties->ids[i],
4326 props_ptr + copied)) {
4327 ret = -EFAULT;
4328 goto out;
4329 }
4330 if (put_user(obj->properties->values[i],
4331 prop_values_ptr + copied)) {
4332 ret = -EFAULT;
4333 goto out;
4334 }
4335 copied++;
4336 }
4337 }
4338 arg->count_props = props_count;
4339out:
84849903 4340 drm_modeset_unlock_all(dev);
c543188a
PZ		 4341 return ret;
4342}
4343
c8e32cc1
DV		 4344/**
4345 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4346 * @dev: DRM device
4347 * @data: ioctl data
4348 * @file_priv: DRM file info
4349 *
4350 * This function sets the current value for an object's property. It also calls
4351 * into a driver's ->set_property callback to update the hardware state.
4352 * Compared to the connector specific ioctl this one is extended to also work on
4353 * crtc and plane objects.
4354 *
4355 * Called by the user via ioctl.
4356 *
4357 * Returns:
1a498633 4358 * Zero on success, negative errno on failure.
c8e32cc1 4359 */
c543188a
PZ		 4360int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4361 struct drm_file *file_priv)
4362{
4363 struct drm_mode_obj_set_property *arg = data;
4364 struct drm_mode_object *arg_obj;
4365 struct drm_mode_object *prop_obj;
4366 struct drm_property *property;
4367 int ret = -EINVAL;
4368 int i;
4369
4370 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4371 return -EINVAL;
4372
84849903 4373 drm_modeset_lock_all(dev);
c543188a
PZ		 4374
4375 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 4376 if (!arg_obj) {
4377 ret = -ENOENT;
c543188a 4378 goto out;
f27657f2 4379 }
c543188a
PZ		 4380 if (!arg_obj->properties)
4381 goto out;
4382
7f88a9be 4383 for (i = 0; i < arg_obj->properties->count; i++)
c543188a
PZ		 4384 if (arg_obj->properties->ids[i] == arg->prop_id)
4385 break;
4386
7f88a9be 4387 if (i == arg_obj->properties->count)
c543188a
PZ		 4388 goto out;
4389
4390 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4391 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 4392 if (!prop_obj) {
4393 ret = -ENOENT;
c543188a 4394 goto out;
f27657f2 4395 }
c543188a
PZ		 4396 property = obj_to_property(prop_obj);
4397
4398 if (!drm_property_change_is_valid(property, arg->value))
4399 goto out;
4400
4401 switch (arg_obj->type) {
4402 case DRM_MODE_OBJECT_CONNECTOR:
4403 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4404 arg->value);
4405 break;
bffd9de0
PZ		 4406 case DRM_MODE_OBJECT_CRTC:
4407 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4408 break;
4d93914a 4409 case DRM_MODE_OBJECT_PLANE:
3a5f87c2
TW		 4410 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4411 property, arg->value);
4d93914a 4412 break;
c543188a
PZ		 4413 }
4414
4415out:
84849903 4416 drm_modeset_unlock_all(dev);
c543188a
PZ		 4417 return ret;
4418}
4419
c8e32cc1
DV		 4420/**
4421 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4422 * @connector: connector to attach
4423 * @encoder: encoder to attach @connector to
4424 *
4425 * This function links up a connector to an encoder. Note that the routing
4426 * restrictions between encoders and crtcs are exposed to userspace through the
4427 * possible_clones and possible_crtcs bitmasks.
4428 *
4429 * Returns:
1a498633 4430 * Zero on success, negative errno on failure.
c8e32cc1 4431 */
f453ba04
DA		 4432int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4433 struct drm_encoder *encoder)
4434{
4435 int i;
4436
4437 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4438 if (connector->encoder_ids[i] == 0) {
4439 connector->encoder_ids[i] = encoder->base.id;
4440 return 0;
4441 }
4442 }
4443 return -ENOMEM;
4444}
4445EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4446
c8e32cc1
DV		 4447/**
4448 * drm_mode_crtc_set_gamma_size - set the gamma table size
4449 * @crtc: CRTC to set the gamma table size for
4450 * @gamma_size: size of the gamma table
4451 *
4452 * Drivers which support gamma tables should set this to the supported gamma
4453 * table size when initializing the CRTC. Currently the drm core only supports a
4454 * fixed gamma table size.
4455 *
4456 * Returns:
1a498633 4457 * Zero on success, negative errno on failure.
c8e32cc1 4458 */
4cae5b84 4459int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 4460 int gamma_size)
f453ba04
DA		 4461{
4462 crtc->gamma_size = gamma_size;
4463
4464 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4465 if (!crtc->gamma_store) {
4466 crtc->gamma_size = 0;
4cae5b84 4467 return -ENOMEM;
f453ba04
DA		 4468 }
4469
4cae5b84 4470 return 0;
f453ba04
DA		 4471}
4472EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4473
c8e32cc1
DV		 4474/**
4475 * drm_mode_gamma_set_ioctl - set the gamma table
4476 * @dev: DRM device
4477 * @data: ioctl data
4478 * @file_priv: DRM file info
4479 *
4480 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4481 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4482 *
4483 * Called by the user via ioctl.
4484 *
4485 * Returns:
1a498633 4486 * Zero on success, negative errno on failure.
c8e32cc1 4487 */
f453ba04
DA		 4488int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4489 void *data, struct drm_file *file_priv)
4490{
4491 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4492 struct drm_crtc *crtc;
4493 void *r_base, *g_base, *b_base;
4494 int size;
4495 int ret = 0;
4496
fb3b06c8
DA		 4497 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4498 return -EINVAL;
4499
84849903 4500 drm_modeset_lock_all(dev);
a2b34e22
RC		 4501 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4502 if (!crtc) {
f27657f2 4503 ret = -ENOENT;
f453ba04
DA		 4504 goto out;
4505 }
f453ba04 4506
ebe0f244
LP		 4507 if (crtc->funcs->gamma_set == NULL) {
4508 ret = -ENOSYS;
4509 goto out;
4510 }
4511
f453ba04
DA		 4512 /* memcpy into gamma store */
4513 if (crtc_lut->gamma_size != crtc->gamma_size) {
4514 ret = -EINVAL;
4515 goto out;
4516 }
4517
4518 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4519 r_base = crtc->gamma_store;
4520 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4521 ret = -EFAULT;
4522 goto out;
4523 }
4524
4525 g_base = r_base + size;
4526 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4527 ret = -EFAULT;
4528 goto out;
4529 }
4530
4531 b_base = g_base + size;
4532 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4533 ret = -EFAULT;
4534 goto out;
4535 }
4536
7203425a 4537 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 4538
4539out:
84849903 4540 drm_modeset_unlock_all(dev);
f453ba04
DA		 4541 return ret;
4542
4543}
4544
c8e32cc1
DV		 4545/**
4546 * drm_mode_gamma_get_ioctl - get the gamma table
4547 * @dev: DRM device
4548 * @data: ioctl data
4549 * @file_priv: DRM file info
4550 *
4551 * Copy the current gamma table into the storage provided. This also provides
4552 * the gamma table size the driver expects, which can be used to size the
4553 * allocated storage.
4554 *
4555 * Called by the user via ioctl.
4556 *
4557 * Returns:
1a498633 4558 * Zero on success, negative errno on failure.
c8e32cc1 4559 */
f453ba04
DA		 4560int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4561 void *data, struct drm_file *file_priv)
4562{
4563 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4564 struct drm_crtc *crtc;
4565 void *r_base, *g_base, *b_base;
4566 int size;
4567 int ret = 0;
4568
fb3b06c8
DA		 4569 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4570 return -EINVAL;
4571
84849903 4572 drm_modeset_lock_all(dev);
a2b34e22
RC		 4573 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4574 if (!crtc) {
f27657f2 4575 ret = -ENOENT;
f453ba04
DA		 4576 goto out;
4577 }
f453ba04
DA		 4578
4579 /* memcpy into gamma store */
4580 if (crtc_lut->gamma_size != crtc->gamma_size) {
4581 ret = -EINVAL;
4582 goto out;
4583 }
4584
4585 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4586 r_base = crtc->gamma_store;
4587 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4588 ret = -EFAULT;
4589 goto out;
4590 }
4591
4592 g_base = r_base + size;
4593 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4594 ret = -EFAULT;
4595 goto out;
4596 }
4597
4598 b_base = g_base + size;
4599 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4600 ret = -EFAULT;
4601 goto out;
4602 }
4603out:
84849903 4604 drm_modeset_unlock_all(dev);
f453ba04
DA		 4605 return ret;
4606}
d91d8a3f 4607
c8e32cc1
DV		 4608/**
4609 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4610 * @dev: DRM device
4611 * @data: ioctl data
4612 * @file_priv: DRM file info
4613 *
4614 * This schedules an asynchronous update on a given CRTC, called page flip.
4615 * Optionally a drm event is generated to signal the completion of the event.
4616 * Generic drivers cannot assume that a pageflip with changed framebuffer
4617 * properties (including driver specific metadata like tiling layout) will work,
4618 * but some drivers support e.g. pixel format changes through the pageflip
4619 * ioctl.
4620 *
4621 * Called by the user via ioctl.
4622 *
4623 * Returns:
1a498633 4624 * Zero on success, negative errno on failure.
c8e32cc1 4625 */
d91d8a3f
KH		 4626int drm_mode_page_flip_ioctl(struct drm_device *dev,
4627 void *data, struct drm_file *file_priv)
4628{
4629 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 4630 struct drm_crtc *crtc;
3d30a59b 4631 struct drm_framebuffer *fb = NULL;
d91d8a3f
KH		 4632 struct drm_pending_vblank_event *e = NULL;
4633 unsigned long flags;
4634 int ret = -EINVAL;
4635
4636 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4637 page_flip->reserved != 0)
4638 return -EINVAL;
4639
62f2104f
KP		 4640 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4641 return -EINVAL;
4642
a2b34e22
RC		 4643 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4644 if (!crtc)
f27657f2 4645 return -ENOENT;
d91d8a3f 4646
4d02e2de 4647 drm_modeset_lock_crtc(crtc, crtc->primary);
f4510a27 4648 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 4649 /* The framebuffer is currently unbound, presumably
4650 * due to a hotplug event, that userspace has not
4651 * yet discovered.
4652 */
4653 ret = -EBUSY;
4654 goto out;
4655 }
4656
d91d8a3f
KH		 4657 if (crtc->funcs->page_flip == NULL)
4658 goto out;
4659
786b99ed 4660 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 4661 if (!fb) {
4662 ret = -ENOENT;
d91d8a3f 4663 goto out;
37c4e705 4664 }
d91d8a3f 4665
c11e9283
DL		 4666 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4667 if (ret)
5f61bb42 4668 goto out;
5f61bb42 4669
f4510a27 4670 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 4671 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4672 ret = -EINVAL;
4673 goto out;
4674 }
4675
d91d8a3f
KH		 4676 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4677 ret = -ENOMEM;
4678 spin_lock_irqsave(&dev->event_lock, flags);
4679 if (file_priv->event_space < sizeof e->event) {
4680 spin_unlock_irqrestore(&dev->event_lock, flags);
4681 goto out;
4682 }
4683 file_priv->event_space -= sizeof e->event;
4684 spin_unlock_irqrestore(&dev->event_lock, flags);
4685
4686 e = kzalloc(sizeof *e, GFP_KERNEL);
4687 if (e == NULL) {
4688 spin_lock_irqsave(&dev->event_lock, flags);
4689 file_priv->event_space += sizeof e->event;
4690 spin_unlock_irqrestore(&dev->event_lock, flags);
4691 goto out;
4692 }
4693
7bd4d7be 4694 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
d91d8a3f
KH		 4695 e->event.base.length = sizeof e->event;
4696 e->event.user_data = page_flip->user_data;
4697 e->base.event = &e->event.base;
4698 e->base.file_priv = file_priv;
4699 e->base.destroy =
4700 (void (*) (struct drm_pending_event *)) kfree;
4701 }
4702
3d30a59b 4703 crtc->primary->old_fb = crtc->primary->fb;
ed8d1975 4704 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 4705 if (ret) {
aef6a7ee
JS		 4706 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4707 spin_lock_irqsave(&dev->event_lock, flags);
4708 file_priv->event_space += sizeof e->event;
4709 spin_unlock_irqrestore(&dev->event_lock, flags);
4710 kfree(e);
4711 }
b0d12325 4712 /* Keep the old fb, don't unref it. */
3d30a59b 4713 crtc->primary->old_fb = NULL;
b0d12325 4714 } else {
8cf1e981
TR		 4715 /*
4716 * Warn if the driver hasn't properly updated the crtc->fb
4717 * field to reflect that the new framebuffer is now used.
4718 * Failing to do so will screw with the reference counting
4719 * on framebuffers.
4720 */
f4510a27 4721 WARN_ON(crtc->primary->fb != fb);
b0d12325
DV		 4722 /* Unref only the old framebuffer. */
4723 fb = NULL;
d91d8a3f
KH		 4724 }
4725
4726out:
b0d12325
DV		 4727 if (fb)
4728 drm_framebuffer_unreference(fb);
3d30a59b
DV		 4729 if (crtc->primary->old_fb)
4730 drm_framebuffer_unreference(crtc->primary->old_fb);
4731 crtc->primary->old_fb = NULL;
d059f652 4732 drm_modeset_unlock_crtc(crtc);
b4d5e7d1 4733
d91d8a3f
KH		 4734 return ret;
4735}
eb033556 4736
c8e32cc1
DV		 4737/**
4738 * drm_mode_config_reset - call ->reset callbacks
4739 * @dev: drm device
4740 *
4741 * This functions calls all the crtc's, encoder's and connector's ->reset
4742 * callback. Drivers can use this in e.g. their driver load or resume code to
4743 * reset hardware and software state.
4744 */
eb033556
CW		 4745void drm_mode_config_reset(struct drm_device *dev)
4746{
4747 struct drm_crtc *crtc;
2a0d7cfd 4748 struct drm_plane *plane;
eb033556
CW		 4749 struct drm_encoder *encoder;
4750 struct drm_connector *connector;
4751
2a0d7cfd
DV		 4752 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4753 if (plane->funcs->reset)
4754 plane->funcs->reset(plane);
4755
eb033556
CW		 4756 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4757 if (crtc->funcs->reset)
4758 crtc->funcs->reset(crtc);
4759
4760 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4761 if (encoder->funcs->reset)
4762 encoder->funcs->reset(encoder);
4763
5e2cb2f6
DV		 4764 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4765 connector->status = connector_status_unknown;
4766
eb033556
CW		 4767 if (connector->funcs->reset)
4768 connector->funcs->reset(connector);
5e2cb2f6 4769 }
eb033556
CW		 4770}
4771EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 4772
c8e32cc1
DV		 4773/**
4774 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4775 * @dev: DRM device
4776 * @data: ioctl data
4777 * @file_priv: DRM file info
4778 *
4779 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4780 * TTM or something else entirely) and returns the resulting buffer handle. This
4781 * handle can then be wrapped up into a framebuffer modeset object.
4782 *
4783 * Note that userspace is not allowed to use such objects for render
4784 * acceleration - drivers must create their own private ioctls for such a use
4785 * case.
4786 *
4787 * Called by the user via ioctl.
4788 *
4789 * Returns:
1a498633 4790 * Zero on success, negative errno on failure.
c8e32cc1 4791 */
ff72145b
DA		 4792int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4793 void *data, struct drm_file *file_priv)
4794{
4795 struct drm_mode_create_dumb *args = data;
b28cd41f 4796 u32 cpp, stride, size;
ff72145b
DA		 4797
4798 if (!dev->driver->dumb_create)
4799 return -ENOSYS;
b28cd41f
DH		 4800 if (!args->width || !args->height || !args->bpp)
4801 return -EINVAL;
4802
4803 /* overflow checks for 32bit size calculations */
00e72089 4804 /* NOTE: DIV_ROUND_UP() can overflow */
b28cd41f 4805 cpp = DIV_ROUND_UP(args->bpp, 8);
00e72089 4806 if (!cpp || cpp > 0xffffffffU / args->width)
b28cd41f
DH		 4807 return -EINVAL;
4808 stride = cpp * args->width;
4809 if (args->height > 0xffffffffU / stride)
4810 return -EINVAL;
4811
4812 /* test for wrap-around */
4813 size = args->height * stride;
4814 if (PAGE_ALIGN(size) == 0)
4815 return -EINVAL;
4816
f6085952
TR		 4817 /*
4818 * handle, pitch and size are output parameters. Zero them out to
4819 * prevent drivers from accidentally using uninitialized data. Since
4820 * not all existing userspace is clearing these fields properly we
4821 * cannot reject IOCTL with garbage in them.
4822 */
4823 args->handle = 0;
4824 args->pitch = 0;
4825 args->size = 0;
4826
ff72145b
DA		 4827 return dev->driver->dumb_create(file_priv, dev, args);
4828}
4829
c8e32cc1
DV		 4830/**
4831 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4832 * @dev: DRM device
4833 * @data: ioctl data
4834 * @file_priv: DRM file info
4835 *
4836 * Allocate an offset in the drm device node's address space to be able to
4837 * memory map a dumb buffer.
4838 *
4839 * Called by the user via ioctl.
4840 *
4841 * Returns:
1a498633 4842 * Zero on success, negative errno on failure.
c8e32cc1 4843 */
ff72145b
DA		 4844int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4845 void *data, struct drm_file *file_priv)
4846{
4847 struct drm_mode_map_dumb *args = data;
4848
4849 /* call driver ioctl to get mmap offset */
4850 if (!dev->driver->dumb_map_offset)
4851 return -ENOSYS;
4852
4853 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4854}
4855
c8e32cc1
DV		 4856/**
4857 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4858 * @dev: DRM device
4859 * @data: ioctl data
4860 * @file_priv: DRM file info
4861 *
4862 * This destroys the userspace handle for the given dumb backing storage buffer.
4863 * Since buffer objects must be reference counted in the kernel a buffer object
4864 * won't be immediately freed if a framebuffer modeset object still uses it.
4865 *
4866 * Called by the user via ioctl.
4867 *
4868 * Returns:
1a498633 4869 * Zero on success, negative errno on failure.
c8e32cc1 4870 */
ff72145b
DA		 4871int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4872 void *data, struct drm_file *file_priv)
4873{
4874 struct drm_mode_destroy_dumb *args = data;
4875
4876 if (!dev->driver->dumb_destroy)
4877 return -ENOSYS;
4878
4879 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4880}
248dbc23 4881
c8e32cc1
DV		 4882/**
4883 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4884 * @format: pixel format (DRM_FORMAT_*)
4885 * @depth: storage for the depth value
4886 * @bpp: storage for the bpp value
4887 *
4888 * This only supports RGB formats here for compat with code that doesn't use
4889 * pixel formats directly yet.
248dbc23
DA		 4890 */
4891void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4892 int *bpp)
4893{
4894 switch (format) {
c51a6bc5 4895 case DRM_FORMAT_C8:
04b3924d
VS		 4896 case DRM_FORMAT_RGB332:
4897 case DRM_FORMAT_BGR233:
248dbc23
DA		 4898 *depth = 8;
4899 *bpp = 8;
4900 break;
04b3924d
VS		 4901 case DRM_FORMAT_XRGB1555:
4902 case DRM_FORMAT_XBGR1555:
4903 case DRM_FORMAT_RGBX5551:
4904 case DRM_FORMAT_BGRX5551:
4905 case DRM_FORMAT_ARGB1555:
4906 case DRM_FORMAT_ABGR1555:
4907 case DRM_FORMAT_RGBA5551:
4908 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 4909 *depth = 15;
4910 *bpp = 16;
4911 break;
04b3924d
VS		 4912 case DRM_FORMAT_RGB565:
4913 case DRM_FORMAT_BGR565:
248dbc23
DA		 4914 *depth = 16;
4915 *bpp = 16;
4916 break;
04b3924d
VS		 4917 case DRM_FORMAT_RGB888:
4918 case DRM_FORMAT_BGR888:
4919 *depth = 24;
4920 *bpp = 24;
4921 break;
4922 case DRM_FORMAT_XRGB8888:
4923 case DRM_FORMAT_XBGR8888:
4924 case DRM_FORMAT_RGBX8888:
4925 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 4926 *depth = 24;
4927 *bpp = 32;
4928 break;
04b3924d
VS		 4929 case DRM_FORMAT_XRGB2101010:
4930 case DRM_FORMAT_XBGR2101010:
4931 case DRM_FORMAT_RGBX1010102:
4932 case DRM_FORMAT_BGRX1010102:
4933 case DRM_FORMAT_ARGB2101010:
4934 case DRM_FORMAT_ABGR2101010:
4935 case DRM_FORMAT_RGBA1010102:
4936 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 4937 *depth = 30;
4938 *bpp = 32;
4939 break;
04b3924d
VS		 4940 case DRM_FORMAT_ARGB8888:
4941 case DRM_FORMAT_ABGR8888:
4942 case DRM_FORMAT_RGBA8888:
4943 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 4944 *depth = 32;
4945 *bpp = 32;
4946 break;
4947 default:
23c453a4
VS		 4948 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4949 drm_get_format_name(format));
248dbc23
DA		 4950 *depth = 0;
4951 *bpp = 0;
4952 break;
4953 }
4954}
4955EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 4956
4957/**
4958 * drm_format_num_planes - get the number of planes for format
4959 * @format: pixel format (DRM_FORMAT_*)
4960 *
c8e32cc1 4961 * Returns:
141670e9
VS		 4962 * The number of planes used by the specified pixel format.
4963 */
4964int drm_format_num_planes(uint32_t format)
4965{
4966 switch (format) {
4967 case DRM_FORMAT_YUV410:
4968 case DRM_FORMAT_YVU410:
4969 case DRM_FORMAT_YUV411:
4970 case DRM_FORMAT_YVU411:
4971 case DRM_FORMAT_YUV420:
4972 case DRM_FORMAT_YVU420:
4973 case DRM_FORMAT_YUV422:
4974 case DRM_FORMAT_YVU422:
4975 case DRM_FORMAT_YUV444:
4976 case DRM_FORMAT_YVU444:
4977 return 3;
4978 case DRM_FORMAT_NV12:
4979 case DRM_FORMAT_NV21:
4980 case DRM_FORMAT_NV16:
4981 case DRM_FORMAT_NV61:
ba623f6a
LP		 4982 case DRM_FORMAT_NV24:
4983 case DRM_FORMAT_NV42:
141670e9
VS		 4984 return 2;
4985 default:
4986 return 1;
4987 }
4988}
4989EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 4990
4991/**
4992 * drm_format_plane_cpp - determine the bytes per pixel value
4993 * @format: pixel format (DRM_FORMAT_*)
4994 * @plane: plane index
4995 *
c8e32cc1 4996 * Returns:
5a86bd55
VS		 4997 * The bytes per pixel value for the specified plane.
4998 */
4999int drm_format_plane_cpp(uint32_t format, int plane)
5000{
5001 unsigned int depth;
5002 int bpp;
5003
5004 if (plane >= drm_format_num_planes(format))
5005 return 0;
5006
5007 switch (format) {
5008 case DRM_FORMAT_YUYV:
5009 case DRM_FORMAT_YVYU:
5010 case DRM_FORMAT_UYVY:
5011 case DRM_FORMAT_VYUY:
5012 return 2;
5013 case DRM_FORMAT_NV12:
5014 case DRM_FORMAT_NV21:
5015 case DRM_FORMAT_NV16:
5016 case DRM_FORMAT_NV61:
ba623f6a
LP		 5017 case DRM_FORMAT_NV24:
5018 case DRM_FORMAT_NV42:
5a86bd55
VS		 5019 return plane ? 2 : 1;
5020 case DRM_FORMAT_YUV410:
5021 case DRM_FORMAT_YVU410:
5022 case DRM_FORMAT_YUV411:
5023 case DRM_FORMAT_YVU411:
5024 case DRM_FORMAT_YUV420:
5025 case DRM_FORMAT_YVU420:
5026 case DRM_FORMAT_YUV422:
5027 case DRM_FORMAT_YVU422:
5028 case DRM_FORMAT_YUV444:
5029 case DRM_FORMAT_YVU444:
5030 return 1;
5031 default:
5032 drm_fb_get_bpp_depth(format, &depth, &bpp);
5033 return bpp >> 3;
5034 }
5035}
5036EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 5037
5038/**
5039 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5040 * @format: pixel format (DRM_FORMAT_*)
5041 *
c8e32cc1 5042 * Returns:
01b68b04
VS		 5043 * The horizontal chroma subsampling factor for the
5044 * specified pixel format.
5045 */
5046int drm_format_horz_chroma_subsampling(uint32_t format)
5047{
5048 switch (format) {
5049 case DRM_FORMAT_YUV411:
5050 case DRM_FORMAT_YVU411:
5051 case DRM_FORMAT_YUV410:
5052 case DRM_FORMAT_YVU410:
5053 return 4;
5054 case DRM_FORMAT_YUYV:
5055 case DRM_FORMAT_YVYU:
5056 case DRM_FORMAT_UYVY:
5057 case DRM_FORMAT_VYUY:
5058 case DRM_FORMAT_NV12:
5059 case DRM_FORMAT_NV21:
5060 case DRM_FORMAT_NV16:
5061 case DRM_FORMAT_NV61:
5062 case DRM_FORMAT_YUV422:
5063 case DRM_FORMAT_YVU422:
5064 case DRM_FORMAT_YUV420:
5065 case DRM_FORMAT_YVU420:
5066 return 2;
5067 default:
5068 return 1;
5069 }
5070}
5071EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5072
5073/**
5074 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5075 * @format: pixel format (DRM_FORMAT_*)
5076 *
c8e32cc1 5077 * Returns:
01b68b04
VS		 5078 * The vertical chroma subsampling factor for the
5079 * specified pixel format.
5080 */
5081int drm_format_vert_chroma_subsampling(uint32_t format)
5082{
5083 switch (format) {
5084 case DRM_FORMAT_YUV410:
5085 case DRM_FORMAT_YVU410:
5086 return 4;
5087 case DRM_FORMAT_YUV420:
5088 case DRM_FORMAT_YVU420:
5089 case DRM_FORMAT_NV12:
5090 case DRM_FORMAT_NV21:
5091 return 2;
5092 default:
5093 return 1;
5094 }
5095}
5096EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3 5097
3c9855f6
VS		 5098/**
5099 * drm_rotation_simplify() - Try to simplify the rotation
5100 * @rotation: Rotation to be simplified
5101 * @supported_rotations: Supported rotations
5102 *
5103 * Attempt to simplify the rotation to a form that is supported.
5104 * Eg. if the hardware supports everything except DRM_REFLECT_X
5105 * one could call this function like this:
5106 *
5107 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5108 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5109 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5110 *
5111 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5112 * transforms the hardware supports, this function may not
5113 * be able to produce a supported transform, so the caller should
5114 * check the result afterwards.
5115 */
5116unsigned int drm_rotation_simplify(unsigned int rotation,
5117 unsigned int supported_rotations)
5118{
5119 if (rotation & ~supported_rotations) {
5120 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5121 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5122 }
5123
5124 return rotation;
5125}
5126EXPORT_SYMBOL(drm_rotation_simplify);
5127
87d24fc3
LP		 5128/**
5129 * drm_mode_config_init - initialize DRM mode_configuration structure
5130 * @dev: DRM device
5131 *
5132 * Initialize @dev's mode_config structure, used for tracking the graphics
5133 * configuration of @dev.
5134 *
5135 * Since this initializes the modeset locks, no locking is possible. Which is no
5136 * problem, since this should happen single threaded at init time. It is the
5137 * driver's problem to ensure this guarantee.
5138 *
5139 */
5140void drm_mode_config_init(struct drm_device *dev)
5141{
5142 mutex_init(&dev->mode_config.mutex);
51fd371b 5143 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5144 mutex_init(&dev->mode_config.idr_mutex);
5145 mutex_init(&dev->mode_config.fb_lock);
5146 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5147 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5148 INIT_LIST_HEAD(&dev->mode_config.connector_list);
3b336ec4 5149 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
87d24fc3
LP		 5150 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5151 INIT_LIST_HEAD(&dev->mode_config.property_list);
5152 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5153 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5154 idr_init(&dev->mode_config.crtc_idr);
5155
5156 drm_modeset_lock_all(dev);
5157 drm_mode_create_standard_connector_properties(dev);
9922ab5a 5158 drm_mode_create_standard_plane_properties(dev);
87d24fc3
LP		 5159 drm_modeset_unlock_all(dev);
5160
5161 /* Just to be sure */
5162 dev->mode_config.num_fb = 0;
5163 dev->mode_config.num_connector = 0;
5164 dev->mode_config.num_crtc = 0;
5165 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 5166 dev->mode_config.num_overlay_plane = 0;
5167 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 5168}
5169EXPORT_SYMBOL(drm_mode_config_init);
5170
5171/**
5172 * drm_mode_config_cleanup - free up DRM mode_config info
5173 * @dev: DRM device
5174 *
5175 * Free up all the connectors and CRTCs associated with this DRM device, then
5176 * free up the framebuffers and associated buffer objects.
5177 *
5178 * Note that since this /should/ happen single-threaded at driver/device
5179 * teardown time, no locking is required. It's the driver's job to ensure that
5180 * this guarantee actually holds true.
5181 *
5182 * FIXME: cleanup any dangling user buffer objects too
5183 */
5184void drm_mode_config_cleanup(struct drm_device *dev)
5185{
5186 struct drm_connector *connector, *ot;
5187 struct drm_crtc *crtc, *ct;
5188 struct drm_encoder *encoder, *enct;
3b336ec4 5189 struct drm_bridge *bridge, *brt;
87d24fc3
LP		 5190 struct drm_framebuffer *fb, *fbt;
5191 struct drm_property *property, *pt;
5192 struct drm_property_blob *blob, *bt;
5193 struct drm_plane *plane, *plt;
5194
5195 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5196 head) {
5197 encoder->funcs->destroy(encoder);
5198 }
5199
3b336ec4
SP		 5200 list_for_each_entry_safe(bridge, brt,
5201 &dev->mode_config.bridge_list, head) {
5202 bridge->funcs->destroy(bridge);
5203 }
5204
87d24fc3
LP		 5205 list_for_each_entry_safe(connector, ot,
5206 &dev->mode_config.connector_list, head) {
5207 connector->funcs->destroy(connector);
5208 }
5209
5210 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5211 head) {
5212 drm_property_destroy(dev, property);
5213 }
5214
5215 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5216 head) {
5217 drm_property_destroy_blob(dev, blob);
5218 }
5219
5220 /*
5221 * Single-threaded teardown context, so it's not required to grab the
5222 * fb_lock to protect against concurrent fb_list access. Contrary, it
5223 * would actually deadlock with the drm_framebuffer_cleanup function.
5224 *
5225 * Also, if there are any framebuffers left, that's a driver leak now,
5226 * so politely WARN about this.
5227 */
5228 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5229 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5230 drm_framebuffer_remove(fb);
5231 }
5232
5233 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5234 head) {
5235 plane->funcs->destroy(plane);
5236 }
5237
5238 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5239 crtc->funcs->destroy(crtc);
5240 }
5241
5242 idr_destroy(&dev->mode_config.crtc_idr);
51fd371b 5243 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5244}
5245EXPORT_SYMBOL(drm_mode_config_cleanup);
c1df5f3c
VS		 5246
5247struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5248 unsigned int supported_rotations)
5249{
5250 static const struct drm_prop_enum_list props[] = {
5251 { DRM_ROTATE_0, "rotate-0" },
5252 { DRM_ROTATE_90, "rotate-90" },
5253 { DRM_ROTATE_180, "rotate-180" },
5254 { DRM_ROTATE_270, "rotate-270" },
5255 { DRM_REFLECT_X, "reflect-x" },
5256 { DRM_REFLECT_Y, "reflect-y" },
5257 };
5258
5259 return drm_property_create_bitmask(dev, 0, "rotation",
5260 props, ARRAY_SIZE(props),
5261 supported_rotations);
5262}
5263EXPORT_SYMBOL(drm_mode_create_rotation_property);
Linux 6.x block layer and io_uring tree(s)