projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge tag 'staging-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
[deliverable/linux.git] / drivers / gpu / drm / drm_crtc.c
CommitLineData
f453ba04
DA		 1/*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
6ba6d03e 32#include <linux/ctype.h>
f453ba04 33#include <linux/list.h>
5a0e3ad6 34#include <linux/slab.h>
2d1a8a48 35#include <linux/export.h>
760285e7
DH		 36#include <drm/drmP.h>
37#include <drm/drm_crtc.h>
38#include <drm/drm_edid.h>
39#include <drm/drm_fourcc.h>
51fd371b 40#include <drm/drm_modeset_lock.h>
88a48e29 41#include <drm/drm_atomic.h>
f453ba04 42
8bd441b2 43#include "drm_crtc_internal.h"
67d0ec4e 44#include "drm_internal.h"
8bd441b2 45
9a6f5130
CW		 46static struct drm_framebuffer *
47internal_framebuffer_create(struct drm_device *dev,
1eb83451 48 const struct drm_mode_fb_cmd2 *r,
9a6f5130 49 struct drm_file *file_priv);
c394c2b0 50
f453ba04
DA		 51/* Avoid boilerplate. I'm tired of typing. */
52#define DRM_ENUM_NAME_FN(fnname, list) \
d20d3174 53 const char *fnname(int val) \
f453ba04
DA		 54 { \
55 int i; \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
59 } \
60 return "(unknown)"; \
61 }
62
63/*
64 * Global properties
65 */
4dfd909f
TR		 66static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
67 { DRM_MODE_DPMS_ON, "On" },
f453ba04
DA		 68 { DRM_MODE_DPMS_STANDBY, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
70 { DRM_MODE_DPMS_OFF, "Off" }
71};
72
73DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
74
4dfd909f 75static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
9922ab5a
RC		 76 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
79};
80
f453ba04
DA		 81/*
82 * Optional properties
83 */
4dfd909f 84static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
53bd8389
JB		 85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 89};
90
ff587e45
VK		 91static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
95};
96
f453ba04
DA		 97/*
98 * Non-global properties, but "required" for certain connectors.
99 */
4dfd909f 100static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
f453ba04
DA		 101 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
104};
105
106DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
107
4dfd909f 108static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
f453ba04
DA		 109 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
112};
113
114DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
115 drm_dvi_i_subconnector_enum_list)
116
4dfd909f 117static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
f453ba04
DA		 118 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 123};
124
125DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
126
4dfd909f 127static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
f453ba04
DA		 128 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 132 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 133};
134
135DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
136 drm_tv_subconnector_enum_list)
137
d20d3174 138static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
884840aa
JB		 139 { DRM_MODE_DIRTY_OFF, "Off" },
140 { DRM_MODE_DIRTY_ON, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
142};
143
f453ba04
DA		 144struct drm_conn_prop_enum_list {
145 int type;
d20d3174 146 const char *name;
b21e3afe 147 struct ida ida;
f453ba04
DA		 148};
149
150/*
151 * Connector and encoder types.
152 */
4dfd909f
TR		 153static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
154 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
b21e3afe
IM		 155 { DRM_MODE_CONNECTOR_VGA, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV, "TV" },
168 { DRM_MODE_CONNECTOR_eDP, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
b8923273 170 { DRM_MODE_CONNECTOR_DSI, "DSI" },
f453ba04
DA		 171};
172
4dfd909f
TR		 173static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
174 { DRM_MODE_ENCODER_NONE, "None" },
f453ba04
DA		 175 { DRM_MODE_ENCODER_DAC, "DAC" },
176 { DRM_MODE_ENCODER_TMDS, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 179 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
b8923273 180 { DRM_MODE_ENCODER_DSI, "DSI" },
182407a6 181 { DRM_MODE_ENCODER_DPMST, "DP MST" },
f453ba04
DA		 182};
183
4dfd909f 184static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
ac1bb36c
JB		 185 { SubPixelUnknown, "Unknown" },
186 { SubPixelHorizontalRGB, "Horizontal RGB" },
187 { SubPixelHorizontalBGR, "Horizontal BGR" },
188 { SubPixelVerticalRGB, "Vertical RGB" },
189 { SubPixelVerticalBGR, "Vertical BGR" },
190 { SubPixelNone, "None" },
191};
192
b21e3afe
IM		 193void drm_connector_ida_init(void)
194{
195 int i;
196
197 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
198 ida_init(&drm_connector_enum_list[i].ida);
199}
200
201void drm_connector_ida_destroy(void)
202{
203 int i;
204
205 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
206 ida_destroy(&drm_connector_enum_list[i].ida);
207}
208
c8e32cc1
DV		 209/**
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
212 *
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
215 */
d20d3174 216const char *drm_get_connector_status_name(enum drm_connector_status status)
f453ba04
DA		 217{
218 if (status == connector_status_connected)
219 return "connected";
220 else if (status == connector_status_disconnected)
221 return "disconnected";
222 else
223 return "unknown";
224}
ed7951dc 225EXPORT_SYMBOL(drm_get_connector_status_name);
f453ba04 226
ac1bb36c
JB		 227/**
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
230 *
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
233 */
234const char *drm_get_subpixel_order_name(enum subpixel_order order)
235{
236 return drm_subpixel_enum_list[order].name;
237}
238EXPORT_SYMBOL(drm_get_subpixel_order_name);
239
6ba6d03e
VS		 240static char printable_char(int c)
241{
242 return isascii(c) && isprint(c) ? c : '?';
243}
244
c8e32cc1
DV		 245/**
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
248 *
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
251 *
252 * FIXME: This isn't really multithreading safe.
253 */
d20d3174 254const char *drm_get_format_name(uint32_t format)
6ba6d03e
VS		 255{
256 static char buf[32];
257
258 snprintf(buf, sizeof(buf),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format & 0xff),
261 printable_char((format >> 8) & 0xff),
262 printable_char((format >> 16) & 0xff),
263 printable_char((format >> 24) & 0x7f),
264 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
265 format);
266
267 return buf;
268}
269EXPORT_SYMBOL(drm_get_format_name);
270
2ee39452
DA		 271/*
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
274 */
275static int drm_mode_object_get_reg(struct drm_device *dev,
276 struct drm_mode_object *obj,
277 uint32_t obj_type,
278 bool register_obj)
279{
280 int ret;
281
282 mutex_lock(&dev->mode_config.idr_mutex);
283 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
284 if (ret >= 0) {
285 /*
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
288 */
289 obj->id = ret;
290 obj->type = obj_type;
291 }
292 mutex_unlock(&dev->mode_config.idr_mutex);
293
294 return ret < 0 ? ret : 0;
295}
296
f453ba04 297/**
065a50ed 298 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 299 * @dev: DRM device
065a50ed
DV		 300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
f453ba04 302 *
f453ba04 303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
c8e32cc1
DV		 304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
f453ba04 307 *
c8e32cc1 308 * Returns:
3c67d839 309 * Zero on success, error code on failure.
f453ba04 310 */
8bd441b2
DV		 311int drm_mode_object_get(struct drm_device *dev,
312 struct drm_mode_object *obj, uint32_t obj_type)
f453ba04 313{
2ee39452
DA		 314 return drm_mode_object_get_reg(dev, obj, obj_type, true);
315}
f453ba04 316
2ee39452
DA		 317static void drm_mode_object_register(struct drm_device *dev,
318 struct drm_mode_object *obj)
319{
ad2563c2 320 mutex_lock(&dev->mode_config.idr_mutex);
2ee39452 321 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
ad2563c2 322 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 323}
324
325/**
065a50ed 326 * drm_mode_object_put - free a modeset identifer
f453ba04 327 * @dev: DRM device
065a50ed 328 * @object: object to free
f453ba04 329 *
c8e32cc1
DV		 330 * Free @id from @dev's unique identifier pool. Note that despite the _get
331 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
332 * for reference counted modeset objects like framebuffers.
f453ba04 333 */
8bd441b2
DV		 334void drm_mode_object_put(struct drm_device *dev,
335 struct drm_mode_object *object)
f453ba04 336{
ad2563c2 337 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 338 idr_remove(&dev->mode_config.crtc_idr, object->id);
ad2563c2 339 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 340}
341
98f75de4
RC		 342static struct drm_mode_object *_object_find(struct drm_device *dev,
343 uint32_t id, uint32_t type)
344{
345 struct drm_mode_object *obj = NULL;
346
347 mutex_lock(&dev->mode_config.idr_mutex);
348 obj = idr_find(&dev->mode_config.crtc_idr, id);
168c02ec
DV		 349 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
350 obj = NULL;
351 if (obj && obj->id != id)
352 obj = NULL;
353 /* don't leak out unref'd fb's */
6bcacf51
DS		 354 if (obj &&
355 (obj->type == DRM_MODE_OBJECT_FB ||
356 obj->type == DRM_MODE_OBJECT_BLOB))
98f75de4
RC		 357 obj = NULL;
358 mutex_unlock(&dev->mode_config.idr_mutex);
359
360 return obj;
361}
362
786b99ed
DV		 363/**
364 * drm_mode_object_find - look up a drm object with static lifetime
365 * @dev: drm device
366 * @id: id of the mode object
367 * @type: type of the mode object
368 *
369 * Note that framebuffers cannot be looked up with this functions - since those
98f75de4
RC		 370 * are reference counted, they need special treatment. Even with
371 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
372 * rather than WARN_ON()).
786b99ed 373 */
7a9c9060
DV		 374struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
375 uint32_t id, uint32_t type)
f453ba04 376{
ad2563c2 377 struct drm_mode_object *obj = NULL;
f453ba04 378
786b99ed
DV		 379 /* Framebuffers are reference counted and need their own lookup
380 * function.*/
6bcacf51 381 WARN_ON(type == DRM_MODE_OBJECT_FB || type == DRM_MODE_OBJECT_BLOB);
98f75de4 382 obj = _object_find(dev, id, type);
f453ba04
DA		 383 return obj;
384}
385EXPORT_SYMBOL(drm_mode_object_find);
386
f453ba04
DA		 387/**
388 * drm_framebuffer_init - initialize a framebuffer
389 * @dev: DRM device
065a50ed
DV		 390 * @fb: framebuffer to be initialized
391 * @funcs: ... with these functions
f453ba04 392 *
f453ba04
DA		 393 * Allocates an ID for the framebuffer's parent mode object, sets its mode
394 * functions & device file and adds it to the master fd list.
395 *
4b096ac1
DV		 396 * IMPORTANT:
397 * This functions publishes the fb and makes it available for concurrent access
398 * by other users. Which means by this point the fb _must_ be fully set up -
399 * since all the fb attributes are invariant over its lifetime, no further
400 * locking but only correct reference counting is required.
401 *
c8e32cc1 402 * Returns:
af901ca1 403 * Zero on success, error code on failure.
f453ba04
DA		 404 */
405int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
406 const struct drm_framebuffer_funcs *funcs)
407{
408 int ret;
409
4b096ac1 410 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e 411 kref_init(&fb->refcount);
4b096ac1
DV		 412 INIT_LIST_HEAD(&fb->filp_head);
413 fb->dev = dev;
414 fb->funcs = funcs;
f7eff60e 415
f453ba04 416 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
6bfc56aa 417 if (ret)
4b096ac1 418 goto out;
f453ba04 419
f453ba04
DA		 420 dev->mode_config.num_fb++;
421 list_add(&fb->head, &dev->mode_config.fb_list);
4b096ac1
DV		 422out:
423 mutex_unlock(&dev->mode_config.fb_lock);
f453ba04 424
3c67d839 425 return ret;
f453ba04
DA		 426}
427EXPORT_SYMBOL(drm_framebuffer_init);
428
83f45fc3
DV		 429/* dev->mode_config.fb_lock must be held! */
430static void __drm_framebuffer_unregister(struct drm_device *dev,
431 struct drm_framebuffer *fb)
432{
433 mutex_lock(&dev->mode_config.idr_mutex);
434 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
435 mutex_unlock(&dev->mode_config.idr_mutex);
436
437 fb->base.id = 0;
438}
439
f7eff60e
RC		 440static void drm_framebuffer_free(struct kref *kref)
441{
442 struct drm_framebuffer *fb =
443 container_of(kref, struct drm_framebuffer, refcount);
83f45fc3
DV		 444 struct drm_device *dev = fb->dev;
445
446 /*
447 * The lookup idr holds a weak reference, which has not necessarily been
448 * removed at this point. Check for that.
449 */
450 mutex_lock(&dev->mode_config.fb_lock);
451 if (fb->base.id) {
452 /* Mark fb as reaped and drop idr ref. */
453 __drm_framebuffer_unregister(dev, fb);
454 }
455 mutex_unlock(&dev->mode_config.fb_lock);
456
f7eff60e
RC		 457 fb->funcs->destroy(fb);
458}
459
2b677e8c
DV		 460static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
461 uint32_t id)
462{
463 struct drm_mode_object *obj = NULL;
464 struct drm_framebuffer *fb;
465
466 mutex_lock(&dev->mode_config.idr_mutex);
467 obj = idr_find(&dev->mode_config.crtc_idr, id);
468 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
469 fb = NULL;
470 else
471 fb = obj_to_fb(obj);
472 mutex_unlock(&dev->mode_config.idr_mutex);
473
474 return fb;
475}
476
786b99ed
DV		 477/**
478 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
479 * @dev: drm device
480 * @id: id of the fb object
481 *
482 * If successful, this grabs an additional reference to the framebuffer -
483 * callers need to make sure to eventually unreference the returned framebuffer
c8e32cc1 484 * again, using @drm_framebuffer_unreference.
786b99ed
DV		 485 */
486struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
487 uint32_t id)
488{
786b99ed
DV		 489 struct drm_framebuffer *fb;
490
491 mutex_lock(&dev->mode_config.fb_lock);
2b677e8c 492 fb = __drm_framebuffer_lookup(dev, id);
83f45fc3
DV		 493 if (fb) {
494 if (!kref_get_unless_zero(&fb->refcount))
495 fb = NULL;
496 }
786b99ed
DV		 497 mutex_unlock(&dev->mode_config.fb_lock);
498
499 return fb;
500}
501EXPORT_SYMBOL(drm_framebuffer_lookup);
502
f7eff60e
RC		 503/**
504 * drm_framebuffer_unreference - unref a framebuffer
065a50ed
DV		 505 * @fb: framebuffer to unref
506 *
507 * This functions decrements the fb's refcount and frees it if it drops to zero.
f7eff60e
RC		 508 */
509void drm_framebuffer_unreference(struct drm_framebuffer *fb)
510{
8291272a 511 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 512 kref_put(&fb->refcount, drm_framebuffer_free);
513}
514EXPORT_SYMBOL(drm_framebuffer_unreference);
515
516/**
517 * drm_framebuffer_reference - incr the fb refcnt
065a50ed 518 * @fb: framebuffer
c8e32cc1
DV		 519 *
520 * This functions increments the fb's refcount.
f7eff60e
RC		 521 */
522void drm_framebuffer_reference(struct drm_framebuffer *fb)
523{
8291272a 524 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 525 kref_get(&fb->refcount);
526}
527EXPORT_SYMBOL(drm_framebuffer_reference);
528
36206361
DV		 529/**
530 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
531 * @fb: fb to unregister
532 *
533 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
534 * those used for fbdev. Note that the caller must hold a reference of it's own,
535 * i.e. the object may not be destroyed through this call (since it'll lead to a
536 * locking inversion).
537 */
538void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
539{
a39a357c
DV		 540 struct drm_device *dev;
541
542 if (!fb)
543 return;
544
545 dev = fb->dev;
2b677e8c
DV		 546
547 mutex_lock(&dev->mode_config.fb_lock);
548 /* Mark fb as reaped and drop idr ref. */
549 __drm_framebuffer_unregister(dev, fb);
550 mutex_unlock(&dev->mode_config.fb_lock);
36206361
DV		 551}
552EXPORT_SYMBOL(drm_framebuffer_unregister_private);
553
f453ba04
DA		 554/**
555 * drm_framebuffer_cleanup - remove a framebuffer object
556 * @fb: framebuffer to remove
557 *
c8e32cc1
DV		 558 * Cleanup framebuffer. This function is intended to be used from the drivers
559 * ->destroy callback. It can also be used to clean up driver private
560 * framebuffers embedded into a larger structure.
36206361
DV		 561 *
562 * Note that this function does not remove the fb from active usuage - if it is
563 * still used anywhere, hilarity can ensue since userspace could call getfb on
564 * the id and get back -EINVAL. Obviously no concern at driver unload time.
565 *
566 * Also, the framebuffer will not be removed from the lookup idr - for
567 * user-created framebuffers this will happen in in the rmfb ioctl. For
568 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
569 * drm_framebuffer_unregister_private.
f453ba04
DA		 570 */
571void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
f7eff60e
RC		 572{
573 struct drm_device *dev = fb->dev;
8faf6b18 574
4b096ac1 575 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e
RC		 576 list_del(&fb->head);
577 dev->mode_config.num_fb--;
4b096ac1 578 mutex_unlock(&dev->mode_config.fb_lock);
f7eff60e
RC		 579}
580EXPORT_SYMBOL(drm_framebuffer_cleanup);
581
582/**
583 * drm_framebuffer_remove - remove and unreference a framebuffer object
584 * @fb: framebuffer to remove
585 *
f7eff60e 586 * Scans all the CRTCs and planes in @dev's mode_config. If they're
36206361 587 * using @fb, removes it, setting it to NULL. Then drops the reference to the
b62584e3
DV		 588 * passed-in framebuffer. Might take the modeset locks.
589 *
590 * Note that this function optimizes the cleanup away if the caller holds the
591 * last reference to the framebuffer. It is also guaranteed to not take the
592 * modeset locks in this case.
f7eff60e
RC		 593 */
594void drm_framebuffer_remove(struct drm_framebuffer *fb)
f453ba04 595{
a39a357c 596 struct drm_device *dev;
f453ba04 597 struct drm_crtc *crtc;
8cf5c917 598 struct drm_plane *plane;
5ef5f72f
DA		 599 struct drm_mode_set set;
600 int ret;
f453ba04 601
a39a357c
DV		 602 if (!fb)
603 return;
604
605 dev = fb->dev;
606
4b096ac1 607 WARN_ON(!list_empty(&fb->filp_head));
8faf6b18 608
b62584e3
DV		 609 /*
610 * drm ABI mandates that we remove any deleted framebuffers from active
611 * useage. But since most sane clients only remove framebuffers they no
612 * longer need, try to optimize this away.
613 *
614 * Since we're holding a reference ourselves, observing a refcount of 1
615 * means that we're the last holder and can skip it. Also, the refcount
616 * can never increase from 1 again, so we don't need any barriers or
617 * locks.
618 *
619 * Note that userspace could try to race with use and instate a new
620 * usage _after_ we've cleared all current ones. End result will be an
621 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
622 * in this manner.
623 */
624 if (atomic_read(&fb->refcount.refcount) > 1) {
625 drm_modeset_lock_all(dev);
626 /* remove from any CRTC */
6295d607 627 drm_for_each_crtc(crtc, dev) {
f4510a27 628 if (crtc->primary->fb == fb) {
b62584e3
DV		 629 /* should turn off the crtc */
630 memset(&set, 0, sizeof(struct drm_mode_set));
631 set.crtc = crtc;
632 set.fb = NULL;
633 ret = drm_mode_set_config_internal(&set);
634 if (ret)
635 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
636 }
5ef5f72f 637 }
f453ba04 638
6295d607 639 drm_for_each_plane(plane, dev) {
9125e618
VS		 640 if (plane->fb == fb)
641 drm_plane_force_disable(plane);
8cf5c917 642 }
b62584e3 643 drm_modeset_unlock_all(dev);
8cf5c917
JB		 644 }
645
f7eff60e 646 drm_framebuffer_unreference(fb);
f453ba04 647}
f7eff60e 648EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04 649
51fd371b
RC		 650DEFINE_WW_CLASS(crtc_ww_class);
651
fa3ab4c2
VS		 652static unsigned int drm_num_crtcs(struct drm_device *dev)
653{
654 unsigned int num = 0;
655 struct drm_crtc *tmp;
656
657 drm_for_each_crtc(tmp, dev) {
658 num++;
659 }
660
661 return num;
662}
663
f453ba04 664/**
e13161af
MR		 665 * drm_crtc_init_with_planes - Initialise a new CRTC object with
666 * specified primary and cursor planes.
f453ba04
DA		 667 * @dev: DRM device
668 * @crtc: CRTC object to init
e13161af
MR		 669 * @primary: Primary plane for CRTC
670 * @cursor: Cursor plane for CRTC
f453ba04 671 * @funcs: callbacks for the new CRTC
f9882876 672 * @name: printf style format string for the CRTC name, or NULL for default name
f453ba04 673 *
ad6f5c34 674 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 675 *
c8e32cc1 676 * Returns:
6bfc56aa 677 * Zero on success, error code on failure.
f453ba04 678 */
e13161af
MR		 679int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
680 struct drm_plane *primary,
fc1d3e44 681 struct drm_plane *cursor,
f9882876
VS		 682 const struct drm_crtc_funcs *funcs,
683 const char *name, ...)
f453ba04 684{
51fd371b 685 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 686 int ret;
687
522cf91f
BG		 688 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
689 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
690
f453ba04
DA		 691 crtc->dev = dev;
692 crtc->funcs = funcs;
693
51fd371b 694 drm_modeset_lock_init(&crtc->mutex);
6bfc56aa
VS		 695 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
696 if (ret)
baf698b0 697 return ret;
f453ba04 698
fa3ab4c2
VS		 699 if (name) {
700 va_list ap;
701
702 va_start(ap, name);
703 crtc->name = kvasprintf(GFP_KERNEL, name, ap);
704 va_end(ap);
705 } else {
706 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
707 drm_num_crtcs(dev));
708 }
709 if (!crtc->name) {
710 drm_mode_object_put(dev, &crtc->base);
711 return -ENOMEM;
712 }
713
bffd9de0
PZ		 714 crtc->base.properties = &crtc->properties;
715
51fd371b
RC		 716 list_add_tail(&crtc->head, &config->crtc_list);
717 config->num_crtc++;
6bfc56aa 718
e13161af 719 crtc->primary = primary;
fc1d3e44 720 crtc->cursor = cursor;
e13161af
MR		 721 if (primary)
722 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
fc1d3e44
MR		 723 if (cursor)
724 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
e13161af 725
eab3bbef
DV		 726 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
727 drm_object_attach_property(&crtc->base, config->prop_active, 0);
955f3c33 728 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
eab3bbef
DV		 729 }
730
baf698b0 731 return 0;
f453ba04 732}
e13161af 733EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 734
735/**
ad6f5c34 736 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 737 * @crtc: CRTC to cleanup
738 *
ad6f5c34
VS		 739 * This function cleans up @crtc and removes it from the DRM mode setting
740 * core. Note that the function does *not* free the crtc structure itself,
741 * this is the responsibility of the caller.
f453ba04
DA		 742 */
743void drm_crtc_cleanup(struct drm_crtc *crtc)
744{
745 struct drm_device *dev = crtc->dev;
746
9e1c156f
SK		 747 kfree(crtc->gamma_store);
748 crtc->gamma_store = NULL;
f453ba04 749
51fd371b
RC		 750 drm_modeset_lock_fini(&crtc->mutex);
751
f453ba04
DA		 752 drm_mode_object_put(dev, &crtc->base);
753 list_del(&crtc->head);
754 dev->mode_config.num_crtc--;
3009c037
TR		 755
756 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
757 if (crtc->state && crtc->funcs->atomic_destroy_state)
758 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
a18c0af1 759
fa3ab4c2
VS		 760 kfree(crtc->name);
761
a18c0af1 762 memset(crtc, 0, sizeof(*crtc));
f453ba04
DA		 763}
764EXPORT_SYMBOL(drm_crtc_cleanup);
765
db5f7a6e
RK		 766/**
767 * drm_crtc_index - find the index of a registered CRTC
768 * @crtc: CRTC to find index for
769 *
770 * Given a registered CRTC, return the index of that CRTC within a DRM
771 * device's list of CRTCs.
772 */
773unsigned int drm_crtc_index(struct drm_crtc *crtc)
774{
775 unsigned int index = 0;
776 struct drm_crtc *tmp;
777
e4f62546 778 drm_for_each_crtc(tmp, crtc->dev) {
db5f7a6e
RK		 779 if (tmp == crtc)
780 return index;
781
782 index++;
783 }
784
785 BUG();
786}
787EXPORT_SYMBOL(drm_crtc_index);
788
86f422d5 789/*
f453ba04
DA		 790 * drm_mode_remove - remove and free a mode
791 * @connector: connector list to modify
792 * @mode: mode to remove
793 *
f453ba04
DA		 794 * Remove @mode from @connector's mode list, then free it.
795 */
86f422d5
LD		 796static void drm_mode_remove(struct drm_connector *connector,
797 struct drm_display_mode *mode)
f453ba04
DA		 798{
799 list_del(&mode->head);
554f1d78 800 drm_mode_destroy(connector->dev, mode);
f453ba04 801}
f453ba04 802
b5571e9d
BB		 803/**
804 * drm_display_info_set_bus_formats - set the supported bus formats
805 * @info: display info to store bus formats in
e37bfa1a
BB		 806 * @formats: array containing the supported bus formats
807 * @num_formats: the number of entries in the fmts array
b5571e9d
BB		 808 *
809 * Store the supported bus formats in display info structure.
810 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
811 * a full list of available formats.
812 */
813int drm_display_info_set_bus_formats(struct drm_display_info *info,
814 const u32 *formats,
815 unsigned int num_formats)
816{
817 u32 *fmts = NULL;
818
819 if (!formats && num_formats)
820 return -EINVAL;
821
822 if (formats && num_formats) {
823 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
824 GFP_KERNEL);
944579c5 825 if (!fmts)
b5571e9d
BB		 826 return -ENOMEM;
827 }
828
829 kfree(info->bus_formats);
830 info->bus_formats = fmts;
831 info->num_bus_formats = num_formats;
832
833 return 0;
834}
835EXPORT_SYMBOL(drm_display_info_set_bus_formats);
836
eaf99c74
CW		 837/**
838 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
839 * @connector: connector to quwery
eaf99c74
CW		 840 *
841 * The kernel supports per-connector configration of its consoles through
842 * use of the video= parameter. This function parses that option and
843 * extracts the user's specified mode (or enable/disable status) for a
844 * particular connector. This is typically only used during the early fbdev
845 * setup.
846 */
847static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
848{
849 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
850 char *option = NULL;
851
852 if (fb_get_options(connector->name, &option))
853 return;
854
855 if (!drm_mode_parse_command_line_for_connector(option,
856 connector,
857 mode))
858 return;
859
860 if (mode->force) {
861 const char *s;
862
863 switch (mode->force) {
864 case DRM_FORCE_OFF:
865 s = "OFF";
866 break;
867 case DRM_FORCE_ON_DIGITAL:
868 s = "ON - dig";
869 break;
870 default:
871 case DRM_FORCE_ON:
872 s = "ON";
873 break;
874 }
875
876 DRM_INFO("forcing %s connector %s\n", connector->name, s);
877 connector->force = mode->force;
878 }
879
880 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
881 connector->name,
882 mode->xres, mode->yres,
883 mode->refresh_specified ? mode->refresh : 60,
884 mode->rb ? " reduced blanking" : "",
885 mode->margins ? " with margins" : "",
886 mode->interlace ? " interlaced" : "");
887}
888
f453ba04
DA		 889/**
890 * drm_connector_init - Init a preallocated connector
891 * @dev: DRM device
892 * @connector: the connector to init
893 * @funcs: callbacks for this connector
065a50ed 894 * @connector_type: user visible type of the connector
f453ba04 895 *
f453ba04
DA		 896 * Initialises a preallocated connector. Connectors should be
897 * subclassed as part of driver connector objects.
6bfc56aa 898 *
c8e32cc1 899 * Returns:
6bfc56aa 900 * Zero on success, error code on failure.
f453ba04 901 */
6bfc56aa
VS		 902int drm_connector_init(struct drm_device *dev,
903 struct drm_connector *connector,
904 const struct drm_connector_funcs *funcs,
905 int connector_type)
f453ba04 906{
ae16c597 907 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa 908 int ret;
b21e3afe
IM		 909 struct ida *connector_ida =
910 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 911
84849903 912 drm_modeset_lock_all(dev);
f453ba04 913
2ee39452 914 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
6bfc56aa 915 if (ret)
2abdd313 916 goto out_unlock;
6bfc56aa 917
7e3bdf4a 918 connector->base.properties = &connector->properties;
f453ba04
DA		 919 connector->dev = dev;
920 connector->funcs = funcs;
f453ba04
DA		 921 connector->connector_type = connector_type;
922 connector->connector_type_id =
b21e3afe
IM		 923 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
924 if (connector->connector_type_id < 0) {
925 ret = connector->connector_type_id;
2abdd313 926 goto out_put;
b21e3afe 927 }
2abdd313
JN		 928 connector->name =
929 kasprintf(GFP_KERNEL, "%s-%d",
930 drm_connector_enum_list[connector_type].name,
931 connector->connector_type_id);
932 if (!connector->name) {
933 ret = -ENOMEM;
934 goto out_put;
935 }
936
f453ba04
DA		 937 INIT_LIST_HEAD(&connector->probed_modes);
938 INIT_LIST_HEAD(&connector->modes);
939 connector->edid_blob_ptr = NULL;
5e2cb2f6 940 connector->status = connector_status_unknown;
f453ba04 941
eaf99c74
CW		 942 drm_connector_get_cmdline_mode(connector);
943
c7eb76f4
DV		 944 /* We should add connectors at the end to avoid upsetting the connector
945 * index too much. */
ae16c597
RC		 946 list_add_tail(&connector->head, &config->connector_list);
947 config->num_connector++;
f453ba04 948
a7331e5c 949 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 950 drm_object_attach_property(&connector->base,
ae16c597 951 config->edid_property,
a7331e5c 952 0);
f453ba04 953
58495563 954 drm_object_attach_property(&connector->base,
ae16c597
RC		 955 config->dpms_property, 0);
956
957 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
958 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
959 }
f453ba04 960
30f65707
TW		 961 connector->debugfs_entry = NULL;
962
2abdd313
JN		 963out_put:
964 if (ret)
965 drm_mode_object_put(dev, &connector->base);
966
967out_unlock:
84849903 968 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 969
970 return ret;
f453ba04
DA		 971}
972EXPORT_SYMBOL(drm_connector_init);
973
974/**
975 * drm_connector_cleanup - cleans up an initialised connector
976 * @connector: connector to cleanup
977 *
f453ba04
DA		 978 * Cleans up the connector but doesn't free the object.
979 */
980void drm_connector_cleanup(struct drm_connector *connector)
981{
982 struct drm_device *dev = connector->dev;
983 struct drm_display_mode *mode, *t;
984
40d9b043
DA		 985 if (connector->tile_group) {
986 drm_mode_put_tile_group(dev, connector->tile_group);
987 connector->tile_group = NULL;
988 }
989
f453ba04
DA		 990 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
991 drm_mode_remove(connector, mode);
992
993 list_for_each_entry_safe(mode, t, &connector->modes, head)
994 drm_mode_remove(connector, mode);
995
b21e3afe
IM		 996 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
997 connector->connector_type_id);
998
b5571e9d 999 kfree(connector->display_info.bus_formats);
f453ba04 1000 drm_mode_object_put(dev, &connector->base);
2abdd313
JN		 1001 kfree(connector->name);
1002 connector->name = NULL;
f453ba04 1003 list_del(&connector->head);
6380c509 1004 dev->mode_config.num_connector--;
3009c037
TR		 1005
1006 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
1007 if (connector->state && connector->funcs->atomic_destroy_state)
1008 connector->funcs->atomic_destroy_state(connector,
1009 connector->state);
a18c0af1
TR		 1010
1011 memset(connector, 0, sizeof(*connector));
f453ba04
DA		 1012}
1013EXPORT_SYMBOL(drm_connector_cleanup);
1014
10f637bf
DV		 1015/**
1016 * drm_connector_index - find the index of a registered connector
1017 * @connector: connector to find index for
1018 *
1019 * Given a registered connector, return the index of that connector within a DRM
1020 * device's list of connectors.
1021 */
1022unsigned int drm_connector_index(struct drm_connector *connector)
1023{
1024 unsigned int index = 0;
1025 struct drm_connector *tmp;
c7eb76f4
DV		 1026 struct drm_mode_config *config = &connector->dev->mode_config;
1027
1028 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
10f637bf 1029
9a9f5ce8 1030 drm_for_each_connector(tmp, connector->dev) {
10f637bf
DV		 1031 if (tmp == connector)
1032 return index;
1033
1034 index++;
1035 }
1036
1037 BUG();
1038}
1039EXPORT_SYMBOL(drm_connector_index);
1040
34ea3d38
TW		 1041/**
1042 * drm_connector_register - register a connector
1043 * @connector: the connector to register
1044 *
1045 * Register userspace interfaces for a connector
1046 *
1047 * Returns:
1048 * Zero on success, error code on failure.
1049 */
1050int drm_connector_register(struct drm_connector *connector)
1051{
30f65707
TW		 1052 int ret;
1053
2ee39452
DA		 1054 drm_mode_object_register(connector->dev, &connector->base);
1055
30f65707
TW		 1056 ret = drm_sysfs_connector_add(connector);
1057 if (ret)
1058 return ret;
1059
1060 ret = drm_debugfs_connector_add(connector);
1061 if (ret) {
1062 drm_sysfs_connector_remove(connector);
1063 return ret;
1064 }
1065
1066 return 0;
34ea3d38
TW		 1067}
1068EXPORT_SYMBOL(drm_connector_register);
1069
1070/**
1071 * drm_connector_unregister - unregister a connector
1072 * @connector: the connector to unregister
1073 *
1074 * Unregister userspace interfaces for a connector
1075 */
1076void drm_connector_unregister(struct drm_connector *connector)
1077{
1078 drm_sysfs_connector_remove(connector);
30f65707 1079 drm_debugfs_connector_remove(connector);
34ea3d38
TW		 1080}
1081EXPORT_SYMBOL(drm_connector_unregister);
1082
1083
c8e32cc1
DV		 1084/**
1085 * drm_connector_unplug_all - unregister connector userspace interfaces
1086 * @dev: drm device
1087 *
1088 * This function unregisters all connector userspace interfaces in sysfs. Should
1089 * be call when the device is disconnected, e.g. from an usb driver's
1090 * ->disconnect callback.
1091 */
cbc7e221
DA		 1092void drm_connector_unplug_all(struct drm_device *dev)
1093{
1094 struct drm_connector *connector;
1095
9a9f5ce8 1096 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
cbc7e221 1097 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
34ea3d38 1098 drm_connector_unregister(connector);
cbc7e221
DA		 1099
1100}
1101EXPORT_SYMBOL(drm_connector_unplug_all);
1102
c8e32cc1
DV		 1103/**
1104 * drm_encoder_init - Init a preallocated encoder
1105 * @dev: drm device
1106 * @encoder: the encoder to init
1107 * @funcs: callbacks for this encoder
1108 * @encoder_type: user visible type of the encoder
13a3d91f 1109 * @name: printf style format string for the encoder name, or NULL for default name
c8e32cc1
DV		 1110 *
1111 * Initialises a preallocated encoder. Encoder should be
1112 * subclassed as part of driver encoder objects.
1113 *
1114 * Returns:
1115 * Zero on success, error code on failure.
1116 */
6bfc56aa 1117int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 1118 struct drm_encoder *encoder,
1119 const struct drm_encoder_funcs *funcs,
13a3d91f 1120 int encoder_type, const char *name, ...)
f453ba04 1121{
6bfc56aa
VS		 1122 int ret;
1123
84849903 1124 drm_modeset_lock_all(dev);
f453ba04 1125
6bfc56aa
VS		 1126 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1127 if (ret)
e5748946 1128 goto out_unlock;
f453ba04 1129
6bfc56aa 1130 encoder->dev = dev;
f453ba04
DA		 1131 encoder->encoder_type = encoder_type;
1132 encoder->funcs = funcs;
86bf546b
VS		 1133 if (name) {
1134 va_list ap;
1135
1136 va_start(ap, name);
1137 encoder->name = kvasprintf(GFP_KERNEL, name, ap);
1138 va_end(ap);
1139 } else {
1140 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1141 drm_encoder_enum_list[encoder_type].name,
1142 encoder->base.id);
1143 }
e5748946
JN		 1144 if (!encoder->name) {
1145 ret = -ENOMEM;
1146 goto out_put;
1147 }
f453ba04
DA		 1148
1149 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1150 dev->mode_config.num_encoder++;
1151
e5748946
JN		 1152out_put:
1153 if (ret)
1154 drm_mode_object_put(dev, &encoder->base);
1155
1156out_unlock:
84849903 1157 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 1158
1159 return ret;
f453ba04
DA		 1160}
1161EXPORT_SYMBOL(drm_encoder_init);
1162
c8e32cc1
DV		 1163/**
1164 * drm_encoder_cleanup - cleans up an initialised encoder
1165 * @encoder: encoder to cleanup
1166 *
1167 * Cleans up the encoder but doesn't free the object.
1168 */
f453ba04
DA		 1169void drm_encoder_cleanup(struct drm_encoder *encoder)
1170{
1171 struct drm_device *dev = encoder->dev;
4dfd909f 1172
84849903 1173 drm_modeset_lock_all(dev);
f453ba04 1174 drm_mode_object_put(dev, &encoder->base);
e5748946 1175 kfree(encoder->name);
f453ba04 1176 list_del(&encoder->head);
6380c509 1177 dev->mode_config.num_encoder--;
84849903 1178 drm_modeset_unlock_all(dev);
a18c0af1
TR		 1179
1180 memset(encoder, 0, sizeof(*encoder));
f453ba04
DA		 1181}
1182EXPORT_SYMBOL(drm_encoder_cleanup);
1183
9f4c97a2
VS		 1184static unsigned int drm_num_planes(struct drm_device *dev)
1185{
1186 unsigned int num = 0;
1187 struct drm_plane *tmp;
1188
1189 drm_for_each_plane(tmp, dev) {
1190 num++;
1191 }
1192
1193 return num;
1194}
1195
35f2c3ae 1196/**
dc415ff9 1197 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1198 * @dev: DRM device
1199 * @plane: plane object to init
1200 * @possible_crtcs: bitmask of possible CRTCs
1201 * @funcs: callbacks for the new plane
1202 * @formats: array of supported formats (%DRM_FORMAT_*)
1203 * @format_count: number of elements in @formats
dc415ff9 1204 * @type: type of plane (overlay, primary, cursor)
b0b3b795 1205 * @name: printf style format string for the plane name, or NULL for default name
35f2c3ae 1206 *
dc415ff9 1207 * Initializes a plane object of type @type.
35f2c3ae 1208 *
c8e32cc1 1209 * Returns:
35f2c3ae
VS		 1210 * Zero on success, error code on failure.
1211 */
dc415ff9
MR		 1212int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1213 unsigned long possible_crtcs,
1214 const struct drm_plane_funcs *funcs,
45e3743a 1215 const uint32_t *formats, unsigned int format_count,
b0b3b795
VS		 1216 enum drm_plane_type type,
1217 const char *name, ...)
8cf5c917 1218{
6b4959f4 1219 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 1220 int ret;
1221
6bfc56aa
VS		 1222 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1223 if (ret)
baf698b0 1224 return ret;
6bfc56aa 1225
4d02e2de
DV		 1226 drm_modeset_lock_init(&plane->mutex);
1227
4d93914a 1228 plane->base.properties = &plane->properties;
8cf5c917 1229 plane->dev = dev;
8cf5c917 1230 plane->funcs = funcs;
2f6c5389
TR		 1231 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1232 GFP_KERNEL);
8cf5c917
JB		 1233 if (!plane->format_types) {
1234 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1235 drm_mode_object_put(dev, &plane->base);
baf698b0 1236 return -ENOMEM;
8cf5c917
JB		 1237 }
1238
9f4c97a2
VS		 1239 if (name) {
1240 va_list ap;
1241
1242 va_start(ap, name);
1243 plane->name = kvasprintf(GFP_KERNEL, name, ap);
1244 va_end(ap);
1245 } else {
1246 plane->name = kasprintf(GFP_KERNEL, "plane-%d",
1247 drm_num_planes(dev));
1248 }
1249 if (!plane->name) {
1250 kfree(plane->format_types);
1251 drm_mode_object_put(dev, &plane->base);
1252 return -ENOMEM;
1253 }
1254
308e5bcb 1255 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1256 plane->format_count = format_count;
1257 plane->possible_crtcs = possible_crtcs;
dc415ff9 1258 plane->type = type;
8cf5c917 1259
6b4959f4
RC		 1260 list_add_tail(&plane->head, &config->plane_list);
1261 config->num_total_plane++;
dc415ff9 1262 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
6b4959f4 1263 config->num_overlay_plane++;
8cf5c917 1264
9922ab5a 1265 drm_object_attach_property(&plane->base,
6b4959f4 1266 config->plane_type_property,
9922ab5a
RC		 1267 plane->type);
1268
6b4959f4
RC		 1269 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1270 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1271 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1272 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1273 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1274 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1275 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1276 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1277 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1278 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1279 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1280 }
1281
baf698b0 1282 return 0;
8cf5c917 1283}
dc415ff9
MR		 1284EXPORT_SYMBOL(drm_universal_plane_init);
1285
1286/**
1287 * drm_plane_init - Initialize a legacy plane
1288 * @dev: DRM device
1289 * @plane: plane object to init
1290 * @possible_crtcs: bitmask of possible CRTCs
1291 * @funcs: callbacks for the new plane
1292 * @formats: array of supported formats (%DRM_FORMAT_*)
1293 * @format_count: number of elements in @formats
1294 * @is_primary: plane type (primary vs overlay)
1295 *
1296 * Legacy API to initialize a DRM plane.
1297 *
1298 * New drivers should call drm_universal_plane_init() instead.
1299 *
1300 * Returns:
1301 * Zero on success, error code on failure.
1302 */
1303int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1304 unsigned long possible_crtcs,
1305 const struct drm_plane_funcs *funcs,
45e3743a 1306 const uint32_t *formats, unsigned int format_count,
dc415ff9
MR		 1307 bool is_primary)
1308{
1309 enum drm_plane_type type;
1310
1311 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1312 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
b0b3b795 1313 formats, format_count, type, NULL);
dc415ff9 1314}
8cf5c917
JB		 1315EXPORT_SYMBOL(drm_plane_init);
1316
35f2c3ae
VS		 1317/**
1318 * drm_plane_cleanup - Clean up the core plane usage
1319 * @plane: plane to cleanup
1320 *
1321 * This function cleans up @plane and removes it from the DRM mode setting
1322 * core. Note that the function does *not* free the plane structure itself,
1323 * this is the responsibility of the caller.
1324 */
8cf5c917
JB		 1325void drm_plane_cleanup(struct drm_plane *plane)
1326{
1327 struct drm_device *dev = plane->dev;
1328
84849903 1329 drm_modeset_lock_all(dev);
8cf5c917
JB		 1330 kfree(plane->format_types);
1331 drm_mode_object_put(dev, &plane->base);
dc415ff9
MR		 1332
1333 BUG_ON(list_empty(&plane->head));
1334
1335 list_del(&plane->head);
1336 dev->mode_config.num_total_plane--;
1337 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1338 dev->mode_config.num_overlay_plane--;
84849903 1339 drm_modeset_unlock_all(dev);
3009c037
TR		 1340
1341 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1342 if (plane->state && plane->funcs->atomic_destroy_state)
1343 plane->funcs->atomic_destroy_state(plane, plane->state);
a18c0af1 1344
9f4c97a2
VS		 1345 kfree(plane->name);
1346
a18c0af1 1347 memset(plane, 0, sizeof(*plane));
8cf5c917
JB		 1348}
1349EXPORT_SYMBOL(drm_plane_cleanup);
1350
10f637bf
DV		 1351/**
1352 * drm_plane_index - find the index of a registered plane
1353 * @plane: plane to find index for
1354 *
1355 * Given a registered plane, return the index of that CRTC within a DRM
1356 * device's list of planes.
1357 */
1358unsigned int drm_plane_index(struct drm_plane *plane)
1359{
1360 unsigned int index = 0;
1361 struct drm_plane *tmp;
1362
e4f62546 1363 drm_for_each_plane(tmp, plane->dev) {
10f637bf
DV		 1364 if (tmp == plane)
1365 return index;
1366
1367 index++;
1368 }
1369
1370 BUG();
1371}
1372EXPORT_SYMBOL(drm_plane_index);
1373
f81338a5
CK		 1374/**
1375 * drm_plane_from_index - find the registered plane at an index
1376 * @dev: DRM device
1377 * @idx: index of registered plane to find for
1378 *
1379 * Given a plane index, return the registered plane from DRM device's
1380 * list of planes with matching index.
1381 */
1382struct drm_plane *
1383drm_plane_from_index(struct drm_device *dev, int idx)
1384{
1385 struct drm_plane *plane;
1386 unsigned int i = 0;
1387
6295d607 1388 drm_for_each_plane(plane, dev) {
f81338a5
CK		 1389 if (i == idx)
1390 return plane;
1391 i++;
1392 }
1393 return NULL;
1394}
1395EXPORT_SYMBOL(drm_plane_from_index);
1396
35f2c3ae
VS		 1397/**
1398 * drm_plane_force_disable - Forcibly disable a plane
1399 * @plane: plane to disable
1400 *
1401 * Forces the plane to be disabled.
1402 *
1403 * Used when the plane's current framebuffer is destroyed,
1404 * and when restoring fbdev mode.
1405 */
9125e618
VS		 1406void drm_plane_force_disable(struct drm_plane *plane)
1407{
1408 int ret;
1409
3d30a59b 1410 if (!plane->fb)
9125e618
VS		 1411 return;
1412
3d30a59b 1413 plane->old_fb = plane->fb;
9125e618 1414 ret = plane->funcs->disable_plane(plane);
731cce48 1415 if (ret) {
9125e618 1416 DRM_ERROR("failed to disable plane with busy fb\n");
3d30a59b 1417 plane->old_fb = NULL;
731cce48
DV		 1418 return;
1419 }
9125e618 1420 /* disconnect the plane from the fb and crtc: */
220dd2bc 1421 drm_framebuffer_unreference(plane->old_fb);
3d30a59b 1422 plane->old_fb = NULL;
9125e618
VS		 1423 plane->fb = NULL;
1424 plane->crtc = NULL;
1425}
1426EXPORT_SYMBOL(drm_plane_force_disable);
1427
6b4959f4 1428static int drm_mode_create_standard_properties(struct drm_device *dev)
f453ba04 1429{
356af0e1 1430 struct drm_property *prop;
f453ba04
DA		 1431
1432 /*
1433 * Standard properties (apply to all connectors)
1434 */
356af0e1 1435 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
f453ba04
DA		 1436 DRM_MODE_PROP_IMMUTABLE,
1437 "EDID", 0);
356af0e1
RC		 1438 if (!prop)
1439 return -ENOMEM;
1440 dev->mode_config.edid_property = prop;
f453ba04 1441
356af0e1 1442 prop = drm_property_create_enum(dev, 0,
4a67d391
SH		 1443 "DPMS", drm_dpms_enum_list,
1444 ARRAY_SIZE(drm_dpms_enum_list));
356af0e1
RC		 1445 if (!prop)
1446 return -ENOMEM;
1447 dev->mode_config.dpms_property = prop;
6f134d7b 1448
356af0e1
RC		 1449 prop = drm_property_create(dev,
1450 DRM_MODE_PROP_BLOB |
1451 DRM_MODE_PROP_IMMUTABLE,
1452 "PATH", 0);
1453 if (!prop)
1454 return -ENOMEM;
1455 dev->mode_config.path_property = prop;
f453ba04 1456
356af0e1
RC		 1457 prop = drm_property_create(dev,
1458 DRM_MODE_PROP_BLOB |
1459 DRM_MODE_PROP_IMMUTABLE,
1460 "TILE", 0);
1461 if (!prop)
1462 return -ENOMEM;
1463 dev->mode_config.tile_property = prop;
9922ab5a 1464
6b4959f4 1465 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
9922ab5a
RC		 1466 "type", drm_plane_type_enum_list,
1467 ARRAY_SIZE(drm_plane_type_enum_list));
6b4959f4
RC		 1468 if (!prop)
1469 return -ENOMEM;
1470 dev->mode_config.plane_type_property = prop;
1471
1472 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1473 "SRC_X", 0, UINT_MAX);
1474 if (!prop)
1475 return -ENOMEM;
1476 dev->mode_config.prop_src_x = prop;
1477
1478 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1479 "SRC_Y", 0, UINT_MAX);
1480 if (!prop)
1481 return -ENOMEM;
1482 dev->mode_config.prop_src_y = prop;
1483
1484 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1485 "SRC_W", 0, UINT_MAX);
1486 if (!prop)
1487 return -ENOMEM;
1488 dev->mode_config.prop_src_w = prop;
1489
1490 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1491 "SRC_H", 0, UINT_MAX);
1492 if (!prop)
1493 return -ENOMEM;
1494 dev->mode_config.prop_src_h = prop;
1495
1496 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1497 "CRTC_X", INT_MIN, INT_MAX);
1498 if (!prop)
1499 return -ENOMEM;
1500 dev->mode_config.prop_crtc_x = prop;
1501
1502 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1503 "CRTC_Y", INT_MIN, INT_MAX);
1504 if (!prop)
1505 return -ENOMEM;
1506 dev->mode_config.prop_crtc_y = prop;
1507
1508 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1509 "CRTC_W", 0, INT_MAX);
1510 if (!prop)
1511 return -ENOMEM;
1512 dev->mode_config.prop_crtc_w = prop;
1513
1514 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1515 "CRTC_H", 0, INT_MAX);
1516 if (!prop)
1517 return -ENOMEM;
1518 dev->mode_config.prop_crtc_h = prop;
1519
1520 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1521 "FB_ID", DRM_MODE_OBJECT_FB);
1522 if (!prop)
1523 return -ENOMEM;
1524 dev->mode_config.prop_fb_id = prop;
1525
1526 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1527 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1528 if (!prop)
1529 return -ENOMEM;
1530 dev->mode_config.prop_crtc_id = prop;
9922ab5a 1531
eab3bbef
DV		 1532 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1533 "ACTIVE");
1534 if (!prop)
1535 return -ENOMEM;
1536 dev->mode_config.prop_active = prop;
1537
955f3c33
DS		 1538 prop = drm_property_create(dev,
1539 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1540 "MODE_ID", 0);
1541 if (!prop)
1542 return -ENOMEM;
1543 dev->mode_config.prop_mode_id = prop;
1544
9922ab5a
RC		 1545 return 0;
1546}
1547
f453ba04
DA		 1548/**
1549 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1550 * @dev: DRM device
1551 *
1552 * Called by a driver the first time a DVI-I connector is made.
1553 */
1554int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1555{
1556 struct drm_property *dvi_i_selector;
1557 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1558
1559 if (dev->mode_config.dvi_i_select_subconnector_property)
1560 return 0;
1561
1562 dvi_i_selector =
4a67d391 1563 drm_property_create_enum(dev, 0,
f453ba04 1564 "select subconnector",
4a67d391 1565 drm_dvi_i_select_enum_list,
f453ba04 1566 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1567 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1568
4a67d391 1569 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1570 "subconnector",
4a67d391 1571 drm_dvi_i_subconnector_enum_list,
f453ba04 1572 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1573 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1574
1575 return 0;
1576}
1577EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1578
1579/**
1580 * drm_create_tv_properties - create TV specific connector properties
1581 * @dev: DRM device
1582 * @num_modes: number of different TV formats (modes) supported
1583 * @modes: array of pointers to strings containing name of each format
1584 *
1585 * Called by a driver's TV initialization routine, this function creates
1586 * the TV specific connector properties for a given device. Caller is
1587 * responsible for allocating a list of format names and passing them to
1588 * this routine.
1589 */
2f763312
TR		 1590int drm_mode_create_tv_properties(struct drm_device *dev,
1591 unsigned int num_modes,
b7c914b3 1592 const char * const modes[])
f453ba04
DA		 1593{
1594 struct drm_property *tv_selector;
1595 struct drm_property *tv_subconnector;
2f763312 1596 unsigned int i;
f453ba04
DA		 1597
1598 if (dev->mode_config.tv_select_subconnector_property)
1599 return 0;
1600
1601 /*
1602 * Basic connector properties
1603 */
4a67d391 1604 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1605 "select subconnector",
4a67d391 1606 drm_tv_select_enum_list,
f453ba04 1607 ARRAY_SIZE(drm_tv_select_enum_list));
48aa1e74
IY		 1608 if (!tv_selector)
1609 goto nomem;
1610
f453ba04
DA		 1611 dev->mode_config.tv_select_subconnector_property = tv_selector;
1612
1613 tv_subconnector =
4a67d391
SH		 1614 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1615 "subconnector",
1616 drm_tv_subconnector_enum_list,
f453ba04 1617 ARRAY_SIZE(drm_tv_subconnector_enum_list));
48aa1e74
IY		 1618 if (!tv_subconnector)
1619 goto nomem;
f453ba04
DA		 1620 dev->mode_config.tv_subconnector_property = tv_subconnector;
1621
1622 /*
1623 * Other, TV specific properties: margins & TV modes.
1624 */
1625 dev->mode_config.tv_left_margin_property =
d9bc3c02 1626 drm_property_create_range(dev, 0, "left margin", 0, 100);
48aa1e74
IY		 1627 if (!dev->mode_config.tv_left_margin_property)
1628 goto nomem;
f453ba04
DA		 1629
1630 dev->mode_config.tv_right_margin_property =
d9bc3c02 1631 drm_property_create_range(dev, 0, "right margin", 0, 100);
48aa1e74
IY		 1632 if (!dev->mode_config.tv_right_margin_property)
1633 goto nomem;
f453ba04
DA		 1634
1635 dev->mode_config.tv_top_margin_property =
d9bc3c02 1636 drm_property_create_range(dev, 0, "top margin", 0, 100);
48aa1e74
IY		 1637 if (!dev->mode_config.tv_top_margin_property)
1638 goto nomem;
f453ba04
DA		 1639
1640 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1641 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
48aa1e74
IY		 1642 if (!dev->mode_config.tv_bottom_margin_property)
1643 goto nomem;
f453ba04
DA		 1644
1645 dev->mode_config.tv_mode_property =
1646 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1647 "mode", num_modes);
48aa1e74
IY		 1648 if (!dev->mode_config.tv_mode_property)
1649 goto nomem;
1650
f453ba04
DA		 1651 for (i = 0; i < num_modes; i++)
1652 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1653 i, modes[i]);
1654
b6b7902e 1655 dev->mode_config.tv_brightness_property =
d9bc3c02 1656 drm_property_create_range(dev, 0, "brightness", 0, 100);
48aa1e74
IY		 1657 if (!dev->mode_config.tv_brightness_property)
1658 goto nomem;
b6b7902e
FJ		 1659
1660 dev->mode_config.tv_contrast_property =
d9bc3c02 1661 drm_property_create_range(dev, 0, "contrast", 0, 100);
48aa1e74
IY		 1662 if (!dev->mode_config.tv_contrast_property)
1663 goto nomem;
b6b7902e
FJ		 1664
1665 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1666 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
48aa1e74
IY		 1667 if (!dev->mode_config.tv_flicker_reduction_property)
1668 goto nomem;
b6b7902e 1669
a75f0236 1670 dev->mode_config.tv_overscan_property =
d9bc3c02 1671 drm_property_create_range(dev, 0, "overscan", 0, 100);
48aa1e74
IY		 1672 if (!dev->mode_config.tv_overscan_property)
1673 goto nomem;
a75f0236
FJ		 1674
1675 dev->mode_config.tv_saturation_property =
d9bc3c02 1676 drm_property_create_range(dev, 0, "saturation", 0, 100);
48aa1e74
IY		 1677 if (!dev->mode_config.tv_saturation_property)
1678 goto nomem;
a75f0236
FJ		 1679
1680 dev->mode_config.tv_hue_property =
d9bc3c02 1681 drm_property_create_range(dev, 0, "hue", 0, 100);
48aa1e74
IY		 1682 if (!dev->mode_config.tv_hue_property)
1683 goto nomem;
a75f0236 1684
f453ba04 1685 return 0;
48aa1e74
IY		 1686nomem:
1687 return -ENOMEM;
f453ba04
DA		 1688}
1689EXPORT_SYMBOL(drm_mode_create_tv_properties);
1690
1691/**
1692 * drm_mode_create_scaling_mode_property - create scaling mode property
1693 * @dev: DRM device
1694 *
1695 * Called by a driver the first time it's needed, must be attached to desired
1696 * connectors.
1697 */
1698int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1699{
1700 struct drm_property *scaling_mode;
f453ba04
DA		 1701
1702 if (dev->mode_config.scaling_mode_property)
1703 return 0;
1704
1705 scaling_mode =
4a67d391
SH		 1706 drm_property_create_enum(dev, 0, "scaling mode",
1707 drm_scaling_mode_enum_list,
f453ba04 1708 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1709
1710 dev->mode_config.scaling_mode_property = scaling_mode;
1711
1712 return 0;
1713}
1714EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1715
ff587e45
VK		 1716/**
1717 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1718 * @dev: DRM device
1719 *
1720 * Called by a driver the first time it's needed, must be attached to desired
1721 * connectors.
1722 *
1723 * Returns:
1a498633 1724 * Zero on success, negative errno on failure.
ff587e45
VK		 1725 */
1726int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1727{
1728 if (dev->mode_config.aspect_ratio_property)
1729 return 0;
1730
1731 dev->mode_config.aspect_ratio_property =
1732 drm_property_create_enum(dev, 0, "aspect ratio",
1733 drm_aspect_ratio_enum_list,
1734 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1735
1736 if (dev->mode_config.aspect_ratio_property == NULL)
1737 return -ENOMEM;
1738
1739 return 0;
1740}
1741EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1742
884840aa
JB		 1743/**
1744 * drm_mode_create_dirty_property - create dirty property
1745 * @dev: DRM device
1746 *
1747 * Called by a driver the first time it's needed, must be attached to desired
1748 * connectors.
1749 */
1750int drm_mode_create_dirty_info_property(struct drm_device *dev)
1751{
1752 struct drm_property *dirty_info;
884840aa
JB		 1753
1754 if (dev->mode_config.dirty_info_property)
1755 return 0;
1756
1757 dirty_info =
4a67d391 1758 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1759 "dirty",
4a67d391 1760 drm_dirty_info_enum_list,
884840aa 1761 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1762 dev->mode_config.dirty_info_property = dirty_info;
1763
1764 return 0;
1765}
1766EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1767
5bb2bbf5
DA		 1768/**
1769 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1770 * @dev: DRM device
1771 *
1772 * Create the the suggested x/y offset property for connectors.
1773 */
1774int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1775{
1776 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1777 return 0;
1778
1779 dev->mode_config.suggested_x_property =
1780 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1781
1782 dev->mode_config.suggested_y_property =
1783 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1784
1785 if (dev->mode_config.suggested_x_property == NULL ||
1786 dev->mode_config.suggested_y_property == NULL)
1787 return -ENOMEM;
1788 return 0;
1789}
1790EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1791
f453ba04
DA		 1792/**
1793 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1794 * @dev: drm device for the ioctl
1795 * @data: data pointer for the ioctl
1796 * @file_priv: drm file for the ioctl call
f453ba04 1797 *
f453ba04
DA		 1798 * Construct a set of configuration description structures and return
1799 * them to the user, including CRTC, connector and framebuffer configuration.
1800 *
1801 * Called by the user via ioctl.
1802 *
c8e32cc1 1803 * Returns:
1a498633 1804 * Zero on success, negative errno on failure.
f453ba04
DA		 1805 */
1806int drm_mode_getresources(struct drm_device *dev, void *data,
1807 struct drm_file *file_priv)
1808{
1809 struct drm_mode_card_res *card_res = data;
1810 struct list_head *lh;
1811 struct drm_framebuffer *fb;
1812 struct drm_connector *connector;
1813 struct drm_crtc *crtc;
1814 struct drm_encoder *encoder;
1815 int ret = 0;
1816 int connector_count = 0;
1817 int crtc_count = 0;
1818 int fb_count = 0;
1819 int encoder_count = 0;
9c7060f7 1820 int copied = 0;
f453ba04
DA		 1821 uint32_t __user *fb_id;
1822 uint32_t __user *crtc_id;
1823 uint32_t __user *connector_id;
1824 uint32_t __user *encoder_id;
f453ba04 1825
fb3b06c8
DA		 1826 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1827 return -EINVAL;
1828
f453ba04 1829
4b096ac1 1830 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1831 /*
1832 * For the non-control nodes we need to limit the list of resources
1833 * by IDs in the group list for this node
1834 */
1835 list_for_each(lh, &file_priv->fbs)
1836 fb_count++;
1837
4b096ac1
DV		 1838 /* handle this in 4 parts */
1839 /* FBs */
1840 if (card_res->count_fbs >= fb_count) {
1841 copied = 0;
1842 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1843 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1844 if (put_user(fb->base.id, fb_id + copied)) {
1845 mutex_unlock(&file_priv->fbs_lock);
1846 return -EFAULT;
1847 }
1848 copied++;
1849 }
1850 }
1851 card_res->count_fbs = fb_count;
1852 mutex_unlock(&file_priv->fbs_lock);
1853
fcf93f69
DV		 1854 /* mode_config.mutex protects the connector list against e.g. DP MST
1855 * connector hot-adding. CRTC/Plane lists are invariant. */
1856 mutex_lock(&dev->mode_config.mutex);
9c7060f7
DV		 1857 drm_for_each_crtc(crtc, dev)
1858 crtc_count++;
f453ba04 1859
9c7060f7
DV		 1860 drm_for_each_connector(connector, dev)
1861 connector_count++;
f453ba04 1862
9c7060f7
DV		 1863 drm_for_each_encoder(encoder, dev)
1864 encoder_count++;
f453ba04
DA		 1865
1866 card_res->max_height = dev->mode_config.max_height;
1867 card_res->min_height = dev->mode_config.min_height;
1868 card_res->max_width = dev->mode_config.max_width;
1869 card_res->min_width = dev->mode_config.min_width;
1870
f453ba04
DA		 1871 /* CRTCs */
1872 if (card_res->count_crtcs >= crtc_count) {
1873 copied = 0;
1874 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
9c7060f7 1875 drm_for_each_crtc(crtc, dev) {
fa3ab4c2
VS		 1876 DRM_DEBUG_KMS("[CRTC:%d:%s]\n",
1877 crtc->base.id, crtc->name);
9c7060f7
DV		 1878 if (put_user(crtc->base.id, crtc_id + copied)) {
1879 ret = -EFAULT;
1880 goto out;
f453ba04 1881 }
9c7060f7 1882 copied++;
f453ba04
DA		 1883 }
1884 }
1885 card_res->count_crtcs = crtc_count;
1886
1887 /* Encoders */
1888 if (card_res->count_encoders >= encoder_count) {
1889 copied = 0;
1890 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
9c7060f7
DV		 1891 drm_for_each_encoder(encoder, dev) {
1892 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1893 encoder->name);
1894 if (put_user(encoder->base.id, encoder_id +
1895 copied)) {
1896 ret = -EFAULT;
1897 goto out;
f453ba04 1898 }
9c7060f7 1899 copied++;
f453ba04
DA		 1900 }
1901 }
1902 card_res->count_encoders = encoder_count;
1903
1904 /* Connectors */
1905 if (card_res->count_connectors >= connector_count) {
1906 copied = 0;
1907 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
9c7060f7
DV		 1908 drm_for_each_connector(connector, dev) {
1909 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1910 connector->base.id,
1911 connector->name);
1912 if (put_user(connector->base.id,
1913 connector_id + copied)) {
1914 ret = -EFAULT;
1915 goto out;
f453ba04 1916 }
9c7060f7 1917 copied++;
f453ba04
DA		 1918 }
1919 }
1920 card_res->count_connectors = connector_count;
1921
9440106b 1922 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1923 card_res->count_connectors, card_res->count_encoders);
1924
1925out:
fcf93f69 1926 mutex_unlock(&dev->mode_config.mutex);
f453ba04
DA		 1927 return ret;
1928}
1929
1930/**
1931 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1932 * @dev: drm device for the ioctl
1933 * @data: data pointer for the ioctl
1934 * @file_priv: drm file for the ioctl call
f453ba04 1935 *
f453ba04
DA		 1936 * Construct a CRTC configuration structure to return to the user.
1937 *
1938 * Called by the user via ioctl.
1939 *
c8e32cc1 1940 * Returns:
1a498633 1941 * Zero on success, negative errno on failure.
f453ba04
DA		 1942 */
1943int drm_mode_getcrtc(struct drm_device *dev,
1944 void *data, struct drm_file *file_priv)
1945{
1946 struct drm_mode_crtc *crtc_resp = data;
1947 struct drm_crtc *crtc;
f453ba04 1948
fb3b06c8
DA		 1949 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1950 return -EINVAL;
1951
a2b34e22 1952 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
fcf93f69
DV		 1953 if (!crtc)
1954 return -ENOENT;
f453ba04 1955
fcf93f69 1956 drm_modeset_lock_crtc(crtc, crtc->primary);
f453ba04 1957 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 1958 if (crtc->primary->fb)
1959 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 1960 else
1961 crtc_resp->fb_id = 0;
1962
31c946e8
DV		 1963 if (crtc->state) {
1964 crtc_resp->x = crtc->primary->state->src_x >> 16;
1965 crtc_resp->y = crtc->primary->state->src_y >> 16;
1966 if (crtc->state->enable) {
934a8a89 1967 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
31c946e8 1968 crtc_resp->mode_valid = 1;
f453ba04 1969
31c946e8
DV		 1970 } else {
1971 crtc_resp->mode_valid = 0;
1972 }
f453ba04 1973 } else {
31c946e8
DV		 1974 crtc_resp->x = crtc->x;
1975 crtc_resp->y = crtc->y;
1976 if (crtc->enabled) {
934a8a89 1977 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
31c946e8
DV		 1978 crtc_resp->mode_valid = 1;
1979
1980 } else {
1981 crtc_resp->mode_valid = 0;
1982 }
f453ba04 1983 }
fcf93f69 1984 drm_modeset_unlock_crtc(crtc);
f453ba04 1985
baf698b0 1986 return 0;
f453ba04
DA		 1987}
1988
61d8e328
DL		 1989static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1990 const struct drm_file *file_priv)
1991{
1992 /*
1993 * If user-space hasn't configured the driver to expose the stereo 3D
1994 * modes, don't expose them.
1995 */
1996 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1997 return false;
1998
1999 return true;
2000}
2001
abd69c55
DV		 2002static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2003{
2004 /* For atomic drivers only state objects are synchronously updated and
2005 * protected by modeset locks, so check those first. */
2006 if (connector->state)
2007 return connector->state->best_encoder;
2008 return connector->encoder;
2009}
2010
95cbf110 2011/* helper for getconnector and getproperties ioctls */
88a48e29 2012static int get_properties(struct drm_mode_object *obj, bool atomic,
95cbf110
RC		 2013 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2014 uint32_t *arg_count_props)
2015{
88a48e29
RC		 2016 int props_count;
2017 int i, ret, copied;
2018
2019 props_count = obj->properties->count;
2020 if (!atomic)
2021 props_count -= obj->properties->atomic_count;
95cbf110
RC		 2022
2023 if ((*arg_count_props >= props_count) && props_count) {
88a48e29 2024 for (i = 0, copied = 0; copied < props_count; i++) {
95cbf110
RC		 2025 struct drm_property *prop = obj->properties->properties[i];
2026 uint64_t val;
2027
88a48e29
RC		 2028 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2029 continue;
2030
95cbf110
RC		 2031 ret = drm_object_property_get_value(obj, prop, &val);
2032 if (ret)
2033 return ret;
2034
2035 if (put_user(prop->base.id, prop_ptr + copied))
2036 return -EFAULT;
2037
2038 if (put_user(val, prop_values + copied))
2039 return -EFAULT;
2040
2041 copied++;
2042 }
2043 }
2044 *arg_count_props = props_count;
2045
2046 return 0;
2047}
2048
f453ba04
DA		 2049/**
2050 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 2051 * @dev: drm device for the ioctl
2052 * @data: data pointer for the ioctl
2053 * @file_priv: drm file for the ioctl call
f453ba04 2054 *
f453ba04
DA		 2055 * Construct a connector configuration structure to return to the user.
2056 *
2057 * Called by the user via ioctl.
2058 *
c8e32cc1 2059 * Returns:
1a498633 2060 * Zero on success, negative errno on failure.
f453ba04
DA		 2061 */
2062int drm_mode_getconnector(struct drm_device *dev, void *data,
2063 struct drm_file *file_priv)
2064{
2065 struct drm_mode_get_connector *out_resp = data;
f453ba04 2066 struct drm_connector *connector;
abd69c55 2067 struct drm_encoder *encoder;
f453ba04
DA		 2068 struct drm_display_mode *mode;
2069 int mode_count = 0;
f453ba04
DA		 2070 int encoders_count = 0;
2071 int ret = 0;
2072 int copied = 0;
2073 int i;
2074 struct drm_mode_modeinfo u_mode;
2075 struct drm_mode_modeinfo __user *mode_ptr;
f453ba04
DA		 2076 uint32_t __user *encoder_ptr;
2077
fb3b06c8
DA		 2078 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2079 return -EINVAL;
2080
f453ba04
DA		 2081 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2082
9440106b 2083 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 2084
7b24056b 2085 mutex_lock(&dev->mode_config.mutex);
f453ba04 2086
a2b34e22
RC		 2087 connector = drm_connector_find(dev, out_resp->connector_id);
2088 if (!connector) {
f27657f2 2089 ret = -ENOENT;
04bdf441 2090 goto out_unlock;
f453ba04 2091 }
f453ba04 2092
01073b08
TR		 2093 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2094 if (connector->encoder_ids[i] != 0)
f453ba04 2095 encoders_count++;
f453ba04
DA		 2096
2097 if (out_resp->count_modes == 0) {
2098 connector->funcs->fill_modes(connector,
2099 dev->mode_config.max_width,
2100 dev->mode_config.max_height);
2101 }
2102
2103 /* delayed so we get modes regardless of pre-fill_modes state */
2104 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 2105 if (drm_mode_expose_to_userspace(mode, file_priv))
2106 mode_count++;
f453ba04
DA		 2107
2108 out_resp->connector_id = connector->base.id;
2109 out_resp->connector_type = connector->connector_type;
2110 out_resp->connector_type_id = connector->connector_type_id;
2111 out_resp->mm_width = connector->display_info.width_mm;
2112 out_resp->mm_height = connector->display_info.height_mm;
2113 out_resp->subpixel = connector->display_info.subpixel_order;
2114 out_resp->connection = connector->status;
2caa80e7
DV		 2115
2116 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2117 encoder = drm_connector_get_encoder(connector);
2118 if (encoder)
2119 out_resp->encoder_id = encoder->base.id;
f453ba04
DA		 2120 else
2121 out_resp->encoder_id = 0;
2122
2123 /*
2124 * This ioctl is called twice, once to determine how much space is
2125 * needed, and the 2nd time to fill it.
2126 */
2127 if ((out_resp->count_modes >= mode_count) && mode_count) {
2128 copied = 0;
81f6c7f8 2129 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 2130 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 2131 if (!drm_mode_expose_to_userspace(mode, file_priv))
2132 continue;
2133
934a8a89 2134 drm_mode_convert_to_umode(&u_mode, mode);
f453ba04
DA		 2135 if (copy_to_user(mode_ptr + copied,
2136 &u_mode, sizeof(u_mode))) {
2137 ret = -EFAULT;
2138 goto out;
2139 }
2140 copied++;
2141 }
2142 }
2143 out_resp->count_modes = mode_count;
2144
88a48e29 2145 ret = get_properties(&connector->base, file_priv->atomic,
95cbf110
RC		 2146 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2147 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2148 &out_resp->count_props);
2149 if (ret)
2150 goto out;
f453ba04
DA		 2151
2152 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2153 copied = 0;
81f6c7f8 2154 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 2155 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2156 if (connector->encoder_ids[i] != 0) {
2157 if (put_user(connector->encoder_ids[i],
2158 encoder_ptr + copied)) {
2159 ret = -EFAULT;
2160 goto out;
2161 }
2162 copied++;
2163 }
2164 }
2165 }
2166 out_resp->count_encoders = encoders_count;
2167
2168out:
ccfc0865 2169 drm_modeset_unlock(&dev->mode_config.connection_mutex);
04bdf441
TR		 2170
2171out_unlock:
7b24056b
DV		 2172 mutex_unlock(&dev->mode_config.mutex);
2173
f453ba04
DA		 2174 return ret;
2175}
2176
abd69c55
DV		 2177static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2178{
2179 struct drm_connector *connector;
2180 struct drm_device *dev = encoder->dev;
2181 bool uses_atomic = false;
2182
2183 /* For atomic drivers only state objects are synchronously updated and
2184 * protected by modeset locks, so check those first. */
6295d607 2185 drm_for_each_connector(connector, dev) {
abd69c55
DV		 2186 if (!connector->state)
2187 continue;
2188
2189 uses_atomic = true;
2190
2191 if (connector->state->best_encoder != encoder)
2192 continue;
2193
2194 return connector->state->crtc;
2195 }
2196
2197 /* Don't return stale data (e.g. pending async disable). */
2198 if (uses_atomic)
2199 return NULL;
2200
2201 return encoder->crtc;
2202}
2203
c8e32cc1
DV		 2204/**
2205 * drm_mode_getencoder - get encoder configuration
2206 * @dev: drm device for the ioctl
2207 * @data: data pointer for the ioctl
2208 * @file_priv: drm file for the ioctl call
2209 *
2210 * Construct a encoder configuration structure to return to the user.
2211 *
2212 * Called by the user via ioctl.
2213 *
2214 * Returns:
1a498633 2215 * Zero on success, negative errno on failure.
c8e32cc1 2216 */
f453ba04
DA		 2217int drm_mode_getencoder(struct drm_device *dev, void *data,
2218 struct drm_file *file_priv)
2219{
2220 struct drm_mode_get_encoder *enc_resp = data;
f453ba04 2221 struct drm_encoder *encoder;
abd69c55 2222 struct drm_crtc *crtc;
f453ba04 2223
fb3b06c8
DA		 2224 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2225 return -EINVAL;
2226
a2b34e22 2227 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
fcf93f69
DV		 2228 if (!encoder)
2229 return -ENOENT;
f453ba04 2230
fcf93f69 2231 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2232 crtc = drm_encoder_get_crtc(encoder);
2233 if (crtc)
2234 enc_resp->crtc_id = crtc->base.id;
f453ba04
DA		 2235 else
2236 enc_resp->crtc_id = 0;
fcf93f69
DV		 2237 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2238
f453ba04
DA		 2239 enc_resp->encoder_type = encoder->encoder_type;
2240 enc_resp->encoder_id = encoder->base.id;
2241 enc_resp->possible_crtcs = encoder->possible_crtcs;
2242 enc_resp->possible_clones = encoder->possible_clones;
2243
baf698b0 2244 return 0;
f453ba04
DA		 2245}
2246
8cf5c917 2247/**
c8e32cc1 2248 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 2249 * @dev: DRM device
2250 * @data: ioctl data
2251 * @file_priv: DRM file info
2252 *
c8e32cc1
DV		 2253 * Construct a list of plane ids to return to the user.
2254 *
2255 * Called by the user via ioctl.
2256 *
2257 * Returns:
1a498633 2258 * Zero on success, negative errno on failure.
8cf5c917
JB		 2259 */
2260int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 2261 struct drm_file *file_priv)
8cf5c917
JB		 2262{
2263 struct drm_mode_get_plane_res *plane_resp = data;
2264 struct drm_mode_config *config;
2265 struct drm_plane *plane;
2266 uint32_t __user *plane_ptr;
fcf93f69 2267 int copied = 0;
681e7ec7 2268 unsigned num_planes;
8cf5c917
JB		 2269
2270 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2271 return -EINVAL;
2272
8cf5c917
JB		 2273 config = &dev->mode_config;
2274
681e7ec7
MR		 2275 if (file_priv->universal_planes)
2276 num_planes = config->num_total_plane;
2277 else
2278 num_planes = config->num_overlay_plane;
2279
8cf5c917
JB		 2280 /*
2281 * This ioctl is called twice, once to determine how much space is
2282 * needed, and the 2nd time to fill it.
2283 */
681e7ec7
MR		 2284 if (num_planes &&
2285 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 2286 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917 2287
fcf93f69 2288 /* Plane lists are invariant, no locking needed. */
e4f62546 2289 drm_for_each_plane(plane, dev) {
681e7ec7
MR		 2290 /*
2291 * Unless userspace set the 'universal planes'
2292 * capability bit, only advertise overlays.
2293 */
2294 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2295 !file_priv->universal_planes)
e27dde3e
MR		 2296 continue;
2297
fcf93f69
DV		 2298 if (put_user(plane->base.id, plane_ptr + copied))
2299 return -EFAULT;
8cf5c917
JB		 2300 copied++;
2301 }
2302 }
681e7ec7 2303 plane_resp->count_planes = num_planes;
8cf5c917 2304
fcf93f69 2305 return 0;
8cf5c917
JB		 2306}
2307
2308/**
c8e32cc1 2309 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2310 * @dev: DRM device
2311 * @data: ioctl data
2312 * @file_priv: DRM file info
2313 *
c8e32cc1
DV		 2314 * Construct a plane configuration structure to return to the user.
2315 *
2316 * Called by the user via ioctl.
2317 *
2318 * Returns:
1a498633 2319 * Zero on success, negative errno on failure.
8cf5c917
JB		 2320 */
2321int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2322 struct drm_file *file_priv)
8cf5c917
JB		 2323{
2324 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2325 struct drm_plane *plane;
2326 uint32_t __user *format_ptr;
8cf5c917
JB		 2327
2328 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2329 return -EINVAL;
2330
a2b34e22 2331 plane = drm_plane_find(dev, plane_resp->plane_id);
fcf93f69
DV		 2332 if (!plane)
2333 return -ENOENT;
8cf5c917 2334
fcf93f69 2335 drm_modeset_lock(&plane->mutex, NULL);
8cf5c917
JB		 2336 if (plane->crtc)
2337 plane_resp->crtc_id = plane->crtc->base.id;
2338 else
2339 plane_resp->crtc_id = 0;
2340
2341 if (plane->fb)
2342 plane_resp->fb_id = plane->fb->base.id;
2343 else
2344 plane_resp->fb_id = 0;
fcf93f69 2345 drm_modeset_unlock(&plane->mutex);
8cf5c917
JB		 2346
2347 plane_resp->plane_id = plane->base.id;
2348 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2349 plane_resp->gamma_size = 0;
8cf5c917
JB		 2350
2351 /*
2352 * This ioctl is called twice, once to determine how much space is
2353 * needed, and the 2nd time to fill it.
2354 */
2355 if (plane->format_count &&
2356 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2357 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2358 if (copy_to_user(format_ptr,
2359 plane->format_types,
2360 sizeof(uint32_t) * plane->format_count)) {
fcf93f69 2361 return -EFAULT;
8cf5c917
JB		 2362 }
2363 }
2364 plane_resp->count_format_types = plane->format_count;
2365
baf698b0 2366 return 0;
8cf5c917
JB		 2367}
2368
ead8610d
LP		 2369/**
2370 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2371 * @plane: plane to check for format support
2372 * @format: the pixel format
2373 *
2374 * Returns:
2375 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2376 * otherwise.
2377 */
2378int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2379{
2380 unsigned int i;
2381
2382 for (i = 0; i < plane->format_count; i++) {
2383 if (format == plane->format_types[i])
2384 return 0;
2385 }
2386
2387 return -EINVAL;
2388}
2389
ce8d9ecc
VS		 2390static int check_src_coords(uint32_t src_x, uint32_t src_y,
2391 uint32_t src_w, uint32_t src_h,
2392 const struct drm_framebuffer *fb)
2393{
2394 unsigned int fb_width, fb_height;
2395
2396 fb_width = fb->width << 16;
2397 fb_height = fb->height << 16;
2398
2399 /* Make sure source coordinates are inside the fb. */
2400 if (src_w > fb_width ||
2401 src_x > fb_width - src_w ||
2402 src_h > fb_height ||
2403 src_y > fb_height - src_h) {
2404 DRM_DEBUG_KMS("Invalid source coordinates "
2405 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2406 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2407 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2408 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2409 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2410 return -ENOSPC;
2411 }
2412
2413 return 0;
2414}
2415
b36552b3
MR		 2416/*
2417 * setplane_internal - setplane handler for internal callers
8cf5c917 2418 *
b36552b3
MR		 2419 * Note that we assume an extra reference has already been taken on fb. If the
2420 * update fails, this reference will be dropped before return; if it succeeds,
2421 * the previous framebuffer (if any) will be unreferenced instead.
c8e32cc1 2422 *
b36552b3 2423 * src_{x,y,w,h} are provided in 16.16 fixed point format
8cf5c917 2424 */
f2b50c11
DV		 2425static int __setplane_internal(struct drm_plane *plane,
2426 struct drm_crtc *crtc,
2427 struct drm_framebuffer *fb,
2428 int32_t crtc_x, int32_t crtc_y,
2429 uint32_t crtc_w, uint32_t crtc_h,
2430 /* src_{x,y,w,h} values are 16.16 fixed point */
2431 uint32_t src_x, uint32_t src_y,
2432 uint32_t src_w, uint32_t src_h)
8cf5c917 2433{
8cf5c917
JB		 2434 int ret = 0;
2435
8cf5c917 2436 /* No fb means shut it down */
b36552b3 2437 if (!fb) {
3d30a59b 2438 plane->old_fb = plane->fb;
731cce48
DV		 2439 ret = plane->funcs->disable_plane(plane);
2440 if (!ret) {
2441 plane->crtc = NULL;
2442 plane->fb = NULL;
2443 } else {
3d30a59b 2444 plane->old_fb = NULL;
731cce48 2445 }
8cf5c917
JB		 2446 goto out;
2447 }
2448
7f994f3f
MR		 2449 /* Check whether this plane is usable on this CRTC */
2450 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2451 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2452 ret = -EINVAL;
2453 goto out;
2454 }
2455
62443be6 2456 /* Check whether this plane supports the fb pixel format. */
ead8610d
LP		 2457 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2458 if (ret) {
6ba6d03e
VS		 2459 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2460 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2461 goto out;
2462 }
2463
3968be94
MR		 2464 /* Give drivers some help against integer overflows */
2465 if (crtc_w > INT_MAX ||
2466 crtc_x > INT_MAX - (int32_t) crtc_w ||
2467 crtc_h > INT_MAX ||
2468 crtc_y > INT_MAX - (int32_t) crtc_h) {
2469 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2470 crtc_w, crtc_h, crtc_x, crtc_y);
c390eed0
VS		 2471 ret = -ERANGE;
2472 goto out;
3968be94
MR		 2473 }
2474
ce8d9ecc
VS		 2475 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2476 if (ret)
42ef8789 2477 goto out;
42ef8789 2478
3d30a59b 2479 plane->old_fb = plane->fb;
8cf5c917 2480 ret = plane->funcs->update_plane(plane, crtc, fb,
b36552b3
MR		 2481 crtc_x, crtc_y, crtc_w, crtc_h,
2482 src_x, src_y, src_w, src_h);
8cf5c917
JB		 2483 if (!ret) {
2484 plane->crtc = crtc;
2485 plane->fb = fb;
35f8badc 2486 fb = NULL;
0fe27f06 2487 } else {
3d30a59b 2488 plane->old_fb = NULL;
8cf5c917
JB		 2489 }
2490
2491out:
6c2a7532
DV		 2492 if (fb)
2493 drm_framebuffer_unreference(fb);
3d30a59b
DV		 2494 if (plane->old_fb)
2495 drm_framebuffer_unreference(plane->old_fb);
2496 plane->old_fb = NULL;
8cf5c917
JB		 2497
2498 return ret;
f2b50c11 2499}
b36552b3 2500
f2b50c11
DV		 2501static int setplane_internal(struct drm_plane *plane,
2502 struct drm_crtc *crtc,
2503 struct drm_framebuffer *fb,
2504 int32_t crtc_x, int32_t crtc_y,
2505 uint32_t crtc_w, uint32_t crtc_h,
2506 /* src_{x,y,w,h} values are 16.16 fixed point */
2507 uint32_t src_x, uint32_t src_y,
2508 uint32_t src_w, uint32_t src_h)
2509{
2510 int ret;
2511
2512 drm_modeset_lock_all(plane->dev);
2513 ret = __setplane_internal(plane, crtc, fb,
2514 crtc_x, crtc_y, crtc_w, crtc_h,
2515 src_x, src_y, src_w, src_h);
2516 drm_modeset_unlock_all(plane->dev);
2517
2518 return ret;
b36552b3
MR		 2519}
2520
2521/**
2522 * drm_mode_setplane - configure a plane's configuration
2523 * @dev: DRM device
2524 * @data: ioctl data*
2525 * @file_priv: DRM file info
2526 *
2527 * Set plane configuration, including placement, fb, scaling, and other factors.
2528 * Or pass a NULL fb to disable (planes may be disabled without providing a
2529 * valid crtc).
2530 *
2531 * Returns:
1a498633 2532 * Zero on success, negative errno on failure.
b36552b3
MR		 2533 */
2534int drm_mode_setplane(struct drm_device *dev, void *data,
2535 struct drm_file *file_priv)
2536{
2537 struct drm_mode_set_plane *plane_req = data;
b36552b3
MR		 2538 struct drm_plane *plane;
2539 struct drm_crtc *crtc = NULL;
2540 struct drm_framebuffer *fb = NULL;
2541
2542 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2543 return -EINVAL;
2544
b36552b3
MR		 2545 /*
2546 * First, find the plane, crtc, and fb objects. If not available,
2547 * we don't bother to call the driver.
2548 */
933f622f
RC		 2549 plane = drm_plane_find(dev, plane_req->plane_id);
2550 if (!plane) {
b36552b3
MR		 2551 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2552 plane_req->plane_id);
2553 return -ENOENT;
2554 }
b36552b3
MR		 2555
2556 if (plane_req->fb_id) {
2557 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2558 if (!fb) {
2559 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2560 plane_req->fb_id);
2561 return -ENOENT;
2562 }
2563
933f622f
RC		 2564 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2565 if (!crtc) {
b36552b3
MR		 2566 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2567 plane_req->crtc_id);
2568 return -ENOENT;
2569 }
b36552b3
MR		 2570 }
2571
161d0dc1
MR		 2572 /*
2573 * setplane_internal will take care of deref'ing either the old or new
2574 * framebuffer depending on success.
2575 */
17cfd91f 2576 return setplane_internal(plane, crtc, fb,
b36552b3
MR		 2577 plane_req->crtc_x, plane_req->crtc_y,
2578 plane_req->crtc_w, plane_req->crtc_h,
2579 plane_req->src_x, plane_req->src_y,
2580 plane_req->src_w, plane_req->src_h);
8cf5c917
JB		 2581}
2582
2d13b679
DV		 2583/**
2584 * drm_mode_set_config_internal - helper to call ->set_config
2585 * @set: modeset config to set
2586 *
2587 * This is a little helper to wrap internal calls to the ->set_config driver
2588 * interface. The only thing it adds is correct refcounting dance.
4dfd909f 2589 *
c8e32cc1 2590 * Returns:
1a498633 2591 * Zero on success, negative errno on failure.
2d13b679
DV		 2592 */
2593int drm_mode_set_config_internal(struct drm_mode_set *set)
2594{
2595 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2596 struct drm_framebuffer *fb;
2597 struct drm_crtc *tmp;
b0d12325
DV		 2598 int ret;
2599
5cef29aa
DV		 2600 /*
2601 * NOTE: ->set_config can also disable other crtcs (if we steal all
2602 * connectors from it), hence we need to refcount the fbs across all
2603 * crtcs. Atomic modeset will have saner semantics ...
2604 */
e4f62546 2605 drm_for_each_crtc(tmp, crtc->dev)
3d30a59b 2606 tmp->primary->old_fb = tmp->primary->fb;
5cef29aa 2607
b0d12325 2608 fb = set->fb;
2d13b679 2609
b0d12325
DV		 2610 ret = crtc->funcs->set_config(set);
2611 if (ret == 0) {
e13161af 2612 crtc->primary->crtc = crtc;
0fe27f06 2613 crtc->primary->fb = fb;
5cef29aa 2614 }
cc85e121 2615
e4f62546 2616 drm_for_each_crtc(tmp, crtc->dev) {
f4510a27
MR		 2617 if (tmp->primary->fb)
2618 drm_framebuffer_reference(tmp->primary->fb);
3d30a59b
DV		 2619 if (tmp->primary->old_fb)
2620 drm_framebuffer_unreference(tmp->primary->old_fb);
2621 tmp->primary->old_fb = NULL;
b0d12325
DV		 2622 }
2623
2624 return ret;
2d13b679
DV		 2625}
2626EXPORT_SYMBOL(drm_mode_set_config_internal);
2627
ecb7e16b
GP		 2628/**
2629 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2630 * @mode: mode to query
2631 * @hdisplay: hdisplay value to fill in
2632 * @vdisplay: vdisplay value to fill in
2633 *
2634 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2635 * the appropriate layout.
2636 */
2637void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2638 int *hdisplay, int *vdisplay)
2639{
2640 struct drm_display_mode adjusted;
2641
2642 drm_mode_copy(&adjusted, mode);
2643 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2644 *hdisplay = adjusted.crtc_hdisplay;
2645 *vdisplay = adjusted.crtc_vdisplay;
2646}
2647EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2648
af93629d
MR		 2649/**
2650 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2651 * CRTC viewport
2652 * @crtc: CRTC that framebuffer will be displayed on
2653 * @x: x panning
2654 * @y: y panning
2655 * @mode: mode that framebuffer will be displayed under
2656 * @fb: framebuffer to check size of
c11e9283 2657 */
af93629d
MR		 2658int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2659 int x, int y,
2660 const struct drm_display_mode *mode,
2661 const struct drm_framebuffer *fb)
c11e9283
DL		 2662
2663{
2664 int hdisplay, vdisplay;
2665
ecb7e16b 2666 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
a0c1bbb0 2667
33e0be63
VS		 2668 if (crtc->state &&
2669 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2670 BIT(DRM_ROTATE_270)))
c11e9283
DL		 2671 swap(hdisplay, vdisplay);
2672
ce8d9ecc
VS		 2673 return check_src_coords(x << 16, y << 16,
2674 hdisplay << 16, vdisplay << 16, fb);
c11e9283 2675}
af93629d 2676EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2677
f453ba04
DA		 2678/**
2679 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2680 * @dev: drm device for the ioctl
2681 * @data: data pointer for the ioctl
2682 * @file_priv: drm file for the ioctl call
f453ba04 2683 *
f453ba04
DA		 2684 * Build a new CRTC configuration based on user request.
2685 *
2686 * Called by the user via ioctl.
2687 *
c8e32cc1 2688 * Returns:
1a498633 2689 * Zero on success, negative errno on failure.
f453ba04
DA		 2690 */
2691int drm_mode_setcrtc(struct drm_device *dev, void *data,
2692 struct drm_file *file_priv)
2693{
2694 struct drm_mode_config *config = &dev->mode_config;
2695 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2696 struct drm_crtc *crtc;
f453ba04
DA		 2697 struct drm_connector **connector_set = NULL, *connector;
2698 struct drm_framebuffer *fb = NULL;
2699 struct drm_display_mode *mode = NULL;
2700 struct drm_mode_set set;
2701 uint32_t __user *set_connectors_ptr;
4a1b0714 2702 int ret;
f453ba04
DA		 2703 int i;
2704
fb3b06c8
DA		 2705 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2706 return -EINVAL;
2707
01447e9f
ZJ		 2708 /*
2709 * Universal plane src offsets are only 16.16, prevent havoc for
2710 * drivers using universal plane code internally.
2711 */
2712 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
1d97e915
VS		 2713 return -ERANGE;
2714
84849903 2715 drm_modeset_lock_all(dev);
a2b34e22
RC		 2716 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2717 if (!crtc) {
58367ed6 2718 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2719 ret = -ENOENT;
f453ba04
DA		 2720 goto out;
2721 }
fa3ab4c2 2722 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
f453ba04
DA		 2723
2724 if (crtc_req->mode_valid) {
2725 /* If we have a mode we need a framebuffer. */
2726 /* If we pass -1, set the mode with the currently bound fb */
2727 if (crtc_req->fb_id == -1) {
f4510a27 2728 if (!crtc->primary->fb) {
6653cc8d
VS		 2729 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2730 ret = -EINVAL;
2731 goto out;
f453ba04 2732 }
f4510a27 2733 fb = crtc->primary->fb;
b0d12325
DV		 2734 /* Make refcounting symmetric with the lookup path. */
2735 drm_framebuffer_reference(fb);
f453ba04 2736 } else {
786b99ed
DV		 2737 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2738 if (!fb) {
58367ed6
ZY		 2739 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2740 crtc_req->fb_id);
37c4e705 2741 ret = -ENOENT;
f453ba04
DA		 2742 goto out;
2743 }
f453ba04
DA		 2744 }
2745
2746 mode = drm_mode_create(dev);
ee34ab5b
VS		 2747 if (!mode) {
2748 ret = -ENOMEM;
2749 goto out;
2750 }
2751
934a8a89 2752 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
90367bf6
VS		 2753 if (ret) {
2754 DRM_DEBUG_KMS("Invalid mode\n");
2755 goto out;
2756 }
2757
f453ba04 2758 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2759
7eb5f302
LP		 2760 /*
2761 * Check whether the primary plane supports the fb pixel format.
2762 * Drivers not implementing the universal planes API use a
2763 * default formats list provided by the DRM core which doesn't
2764 * match real hardware capabilities. Skip the check in that
2765 * case.
2766 */
2767 if (!crtc->primary->format_default) {
2768 ret = drm_plane_check_pixel_format(crtc->primary,
2769 fb->pixel_format);
2770 if (ret) {
2771 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2772 drm_get_format_name(fb->pixel_format));
2773 goto out;
2774 }
2775 }
2776
c11e9283
DL		 2777 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2778 mode, fb);
2779 if (ret)
5f61bb42 2780 goto out;
c11e9283 2781
f453ba04
DA		 2782 }
2783
2784 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2785 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2786 ret = -EINVAL;
2787 goto out;
2788 }
2789
7781de74 2790 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2791 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2792 crtc_req->count_connectors);
2793 ret = -EINVAL;
2794 goto out;
2795 }
2796
2797 if (crtc_req->count_connectors > 0) {
2798 u32 out_id;
2799
2800 /* Avoid unbounded kernel memory allocation */
2801 if (crtc_req->count_connectors > config->num_connector) {
2802 ret = -EINVAL;
2803 goto out;
2804 }
2805
2f6c5389
TR		 2806 connector_set = kmalloc_array(crtc_req->count_connectors,
2807 sizeof(struct drm_connector *),
2808 GFP_KERNEL);
f453ba04
DA		 2809 if (!connector_set) {
2810 ret = -ENOMEM;
2811 goto out;
2812 }
2813
2814 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2815 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2816 if (get_user(out_id, &set_connectors_ptr[i])) {
2817 ret = -EFAULT;
2818 goto out;
2819 }
2820
a2b34e22
RC		 2821 connector = drm_connector_find(dev, out_id);
2822 if (!connector) {
58367ed6
ZY		 2823 DRM_DEBUG_KMS("Connector id %d unknown\n",
2824 out_id);
f27657f2 2825 ret = -ENOENT;
f453ba04
DA		 2826 goto out;
2827 }
9440106b
JG		 2828 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2829 connector->base.id,
25933820 2830 connector->name);
f453ba04
DA		 2831
2832 connector_set[i] = connector;
2833 }
2834 }
2835
2836 set.crtc = crtc;
2837 set.x = crtc_req->x;
2838 set.y = crtc_req->y;
2839 set.mode = mode;
2840 set.connectors = connector_set;
2841 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2842 set.fb = fb;
2d13b679 2843 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2844
2845out:
b0d12325
DV		 2846 if (fb)
2847 drm_framebuffer_unreference(fb);
2848
f453ba04 2849 kfree(connector_set);
ee34ab5b 2850 drm_mode_destroy(dev, mode);
84849903 2851 drm_modeset_unlock_all(dev);
f453ba04
DA		 2852 return ret;
2853}
2854
161d0dc1
MR		 2855/**
2856 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2857 * universal plane handler call
2858 * @crtc: crtc to update cursor for
2859 * @req: data pointer for the ioctl
2860 * @file_priv: drm file for the ioctl call
2861 *
2862 * Legacy cursor ioctl's work directly with driver buffer handles. To
2863 * translate legacy ioctl calls into universal plane handler calls, we need to
2864 * wrap the native buffer handle in a drm_framebuffer.
2865 *
2866 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2867 * buffer with a pitch of 4*width; the universal plane interface should be used
2868 * directly in cases where the hardware can support other buffer settings and
2869 * userspace wants to make use of these capabilities.
2870 *
2871 * Returns:
1a498633 2872 * Zero on success, negative errno on failure.
161d0dc1
MR		 2873 */
2874static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2875 struct drm_mode_cursor2 *req,
2876 struct drm_file *file_priv)
2877{
2878 struct drm_device *dev = crtc->dev;
2879 struct drm_framebuffer *fb = NULL;
2880 struct drm_mode_fb_cmd2 fbreq = {
2881 .width = req->width,
2882 .height = req->height,
2883 .pixel_format = DRM_FORMAT_ARGB8888,
2884 .pitches = { req->width * 4 },
2885 .handles = { req->handle },
2886 };
2887 int32_t crtc_x, crtc_y;
2888 uint32_t crtc_w = 0, crtc_h = 0;
2889 uint32_t src_w = 0, src_h = 0;
2890 int ret = 0;
2891
2892 BUG_ON(!crtc->cursor);
f2b50c11 2893 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
161d0dc1
MR		 2894
2895 /*
2896 * Obtain fb we'll be using (either new or existing) and take an extra
2897 * reference to it if fb != null. setplane will take care of dropping
2898 * the reference if the plane update fails.
2899 */
2900 if (req->flags & DRM_MODE_CURSOR_BO) {
2901 if (req->handle) {
9a6f5130 2902 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
161d0dc1
MR		 2903 if (IS_ERR(fb)) {
2904 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2905 return PTR_ERR(fb);
2906 }
161d0dc1
MR		 2907 } else {
2908 fb = NULL;
2909 }
2910 } else {
161d0dc1
MR		 2911 fb = crtc->cursor->fb;
2912 if (fb)
2913 drm_framebuffer_reference(fb);
161d0dc1
MR		 2914 }
2915
2916 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2917 crtc_x = req->x;
2918 crtc_y = req->y;
2919 } else {
2920 crtc_x = crtc->cursor_x;
2921 crtc_y = crtc->cursor_y;
2922 }
2923
2924 if (fb) {
2925 crtc_w = fb->width;
2926 crtc_h = fb->height;
2927 src_w = fb->width << 16;
2928 src_h = fb->height << 16;
2929 }
2930
2931 /*
2932 * setplane_internal will take care of deref'ing either the old or new
2933 * framebuffer depending on success.
2934 */
f2b50c11 2935 ret = __setplane_internal(crtc->cursor, crtc, fb,
161d0dc1
MR		 2936 crtc_x, crtc_y, crtc_w, crtc_h,
2937 0, 0, src_w, src_h);
2938
2939 /* Update successful; save new cursor position, if necessary */
2940 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2941 crtc->cursor_x = req->x;
2942 crtc->cursor_y = req->y;
2943 }
2944
2945 return ret;
2946}
2947
4c813d4d
DA		 2948static int drm_mode_cursor_common(struct drm_device *dev,
2949 struct drm_mode_cursor2 *req,
2950 struct drm_file *file_priv)
f453ba04 2951{
f453ba04
DA		 2952 struct drm_crtc *crtc;
2953 int ret = 0;
2954
fb3b06c8
DA		 2955 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2956 return -EINVAL;
2957
7c4eaca4 2958 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 2959 return -EINVAL;
f453ba04 2960
a2b34e22
RC		 2961 crtc = drm_crtc_find(dev, req->crtc_id);
2962 if (!crtc) {
58367ed6 2963 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 2964 return -ENOENT;
f453ba04 2965 }
f453ba04 2966
161d0dc1
MR		 2967 /*
2968 * If this crtc has a universal cursor plane, call that plane's update
2969 * handler rather than using legacy cursor handlers.
2970 */
4d02e2de 2971 drm_modeset_lock_crtc(crtc, crtc->cursor);
f2b50c11
DV		 2972 if (crtc->cursor) {
2973 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2974 goto out;
2975 }
2976
f453ba04 2977 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 2978 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 2979 ret = -ENXIO;
2980 goto out;
2981 }
2982 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 2983 if (crtc->funcs->cursor_set2)
2984 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2985 req->width, req->height, req->hot_x, req->hot_y);
2986 else
2987 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2988 req->width, req->height);
f453ba04
DA		 2989 }
2990
2991 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2992 if (crtc->funcs->cursor_move) {
2993 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2994 } else {
f453ba04
DA		 2995 ret = -EFAULT;
2996 goto out;
2997 }
2998 }
2999out:
d059f652 3000 drm_modeset_unlock_crtc(crtc);
dac35663 3001
f453ba04 3002 return ret;
4c813d4d
DA		 3003
3004}
c8e32cc1
DV		 3005
3006
3007/**
3008 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3009 * @dev: drm device for the ioctl
3010 * @data: data pointer for the ioctl
3011 * @file_priv: drm file for the ioctl call
3012 *
3013 * Set the cursor configuration based on user request.
3014 *
3015 * Called by the user via ioctl.
3016 *
3017 * Returns:
1a498633 3018 * Zero on success, negative errno on failure.
c8e32cc1 3019 */
4c813d4d 3020int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 3021 void *data, struct drm_file *file_priv)
4c813d4d
DA		 3022{
3023 struct drm_mode_cursor *req = data;
3024 struct drm_mode_cursor2 new_req;
3025
3026 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3027 new_req.hot_x = new_req.hot_y = 0;
3028
3029 return drm_mode_cursor_common(dev, &new_req, file_priv);
3030}
3031
c8e32cc1
DV		 3032/**
3033 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3034 * @dev: drm device for the ioctl
3035 * @data: data pointer for the ioctl
3036 * @file_priv: drm file for the ioctl call
3037 *
3038 * Set the cursor configuration based on user request. This implements the 2nd
3039 * version of the cursor ioctl, which allows userspace to additionally specify
3040 * the hotspot of the pointer.
3041 *
3042 * Called by the user via ioctl.
3043 *
3044 * Returns:
1a498633 3045 * Zero on success, negative errno on failure.
c8e32cc1 3046 */
4c813d4d
DA		 3047int drm_mode_cursor2_ioctl(struct drm_device *dev,
3048 void *data, struct drm_file *file_priv)
3049{
3050 struct drm_mode_cursor2 *req = data;
4dfd909f 3051
4c813d4d 3052 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 3053}
3054
c8e32cc1
DV		 3055/**
3056 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3057 * @bpp: bits per pixels
3058 * @depth: bit depth per pixel
3059 *
3060 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3061 * Useful in fbdev emulation code, since that deals in those values.
3062 */
308e5bcb
JB		 3063uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3064{
3065 uint32_t fmt;
3066
3067 switch (bpp) {
3068 case 8:
d84f031b 3069 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 3070 break;
3071 case 16:
3072 if (depth == 15)
04b3924d 3073 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 3074 else
04b3924d 3075 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 3076 break;
3077 case 24:
04b3924d 3078 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 3079 break;
3080 case 32:
3081 if (depth == 24)
04b3924d 3082 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 3083 else if (depth == 30)
04b3924d 3084 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 3085 else
04b3924d 3086 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 3087 break;
3088 default:
04b3924d
VS		 3089 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3090 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 3091 break;
3092 }
3093
3094 return fmt;
3095}
3096EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3097
f453ba04
DA		 3098/**
3099 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 3100 * @dev: drm device for the ioctl
3101 * @data: data pointer for the ioctl
3102 * @file_priv: drm file for the ioctl call
f453ba04 3103 *
c8e32cc1 3104 * Add a new FB to the specified CRTC, given a user request. This is the
209f5527 3105 * original addfb ioctl which only supported RGB formats.
f453ba04
DA		 3106 *
3107 * Called by the user via ioctl.
3108 *
c8e32cc1 3109 * Returns:
1a498633 3110 * Zero on success, negative errno on failure.
f453ba04
DA		 3111 */
3112int drm_mode_addfb(struct drm_device *dev,
3113 void *data, struct drm_file *file_priv)
3114{
308e5bcb
JB		 3115 struct drm_mode_fb_cmd *or = data;
3116 struct drm_mode_fb_cmd2 r = {};
228f2cb3 3117 int ret;
308e5bcb 3118
228f2cb3 3119 /* convert to new format and call new ioctl */
308e5bcb
JB		 3120 r.fb_id = or->fb_id;
3121 r.width = or->width;
3122 r.height = or->height;
3123 r.pitches[0] = or->pitch;
3124 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3125 r.handles[0] = or->handle;
3126
228f2cb3
CE		 3127 ret = drm_mode_addfb2(dev, &r, file_priv);
3128 if (ret)
3129 return ret;
308e5bcb 3130
228f2cb3 3131 or->fb_id = r.fb_id;
4b096ac1 3132
baf698b0 3133 return 0;
308e5bcb
JB		 3134}
3135
cff91b62 3136static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 3137{
3138 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3139
3140 switch (format) {
3141 case DRM_FORMAT_C8:
3142 case DRM_FORMAT_RGB332:
3143 case DRM_FORMAT_BGR233:
3144 case DRM_FORMAT_XRGB4444:
3145 case DRM_FORMAT_XBGR4444:
3146 case DRM_FORMAT_RGBX4444:
3147 case DRM_FORMAT_BGRX4444:
3148 case DRM_FORMAT_ARGB4444:
3149 case DRM_FORMAT_ABGR4444:
3150 case DRM_FORMAT_RGBA4444:
3151 case DRM_FORMAT_BGRA4444:
3152 case DRM_FORMAT_XRGB1555:
3153 case DRM_FORMAT_XBGR1555:
3154 case DRM_FORMAT_RGBX5551:
3155 case DRM_FORMAT_BGRX5551:
3156 case DRM_FORMAT_ARGB1555:
3157 case DRM_FORMAT_ABGR1555:
3158 case DRM_FORMAT_RGBA5551:
3159 case DRM_FORMAT_BGRA5551:
3160 case DRM_FORMAT_RGB565:
3161 case DRM_FORMAT_BGR565:
3162 case DRM_FORMAT_RGB888:
3163 case DRM_FORMAT_BGR888:
3164 case DRM_FORMAT_XRGB8888:
3165 case DRM_FORMAT_XBGR8888:
3166 case DRM_FORMAT_RGBX8888:
3167 case DRM_FORMAT_BGRX8888:
3168 case DRM_FORMAT_ARGB8888:
3169 case DRM_FORMAT_ABGR8888:
3170 case DRM_FORMAT_RGBA8888:
3171 case DRM_FORMAT_BGRA8888:
3172 case DRM_FORMAT_XRGB2101010:
3173 case DRM_FORMAT_XBGR2101010:
3174 case DRM_FORMAT_RGBX1010102:
3175 case DRM_FORMAT_BGRX1010102:
3176 case DRM_FORMAT_ARGB2101010:
3177 case DRM_FORMAT_ABGR2101010:
3178 case DRM_FORMAT_RGBA1010102:
3179 case DRM_FORMAT_BGRA1010102:
3180 case DRM_FORMAT_YUYV:
3181 case DRM_FORMAT_YVYU:
3182 case DRM_FORMAT_UYVY:
3183 case DRM_FORMAT_VYUY:
3184 case DRM_FORMAT_AYUV:
3185 case DRM_FORMAT_NV12:
3186 case DRM_FORMAT_NV21:
3187 case DRM_FORMAT_NV16:
3188 case DRM_FORMAT_NV61:
ba623f6a
LP		 3189 case DRM_FORMAT_NV24:
3190 case DRM_FORMAT_NV42:
935b5977
VS		 3191 case DRM_FORMAT_YUV410:
3192 case DRM_FORMAT_YVU410:
3193 case DRM_FORMAT_YUV411:
3194 case DRM_FORMAT_YVU411:
3195 case DRM_FORMAT_YUV420:
3196 case DRM_FORMAT_YVU420:
3197 case DRM_FORMAT_YUV422:
3198 case DRM_FORMAT_YVU422:
3199 case DRM_FORMAT_YUV444:
3200 case DRM_FORMAT_YVU444:
3201 return 0;
3202 default:
23c453a4
VS		 3203 DRM_DEBUG_KMS("invalid pixel format %s\n",
3204 drm_get_format_name(r->pixel_format));
935b5977
VS		 3205 return -EINVAL;
3206 }
3207}
3208
cff91b62 3209static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 3210{
3211 int ret, hsub, vsub, num_planes, i;
3212
3213 ret = format_check(r);
3214 if (ret) {
6ba6d03e
VS		 3215 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3216 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 3217 return ret;
3218 }
3219
3220 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3221 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3222 num_planes = drm_format_num_planes(r->pixel_format);
3223
3224 if (r->width == 0 || r->width % hsub) {
209f5527 3225 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
d1b45d5f
VS		 3226 return -EINVAL;
3227 }
3228
3229 if (r->height == 0 || r->height % vsub) {
1aa1b11c 3230 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 3231 return -EINVAL;
3232 }
3233
3234 for (i = 0; i < num_planes; i++) {
3235 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 3236 unsigned int height = r->height / (i != 0 ? vsub : 1);
3237 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 3238
3239 if (!r->handles[i]) {
1aa1b11c 3240 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 3241 return -EINVAL;
3242 }
3243
b180b5d1
VS		 3244 if ((uint64_t) width * cpp > UINT_MAX)
3245 return -ERANGE;
3246
3247 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3248 return -ERANGE;
3249
3250 if (r->pitches[i] < width * cpp) {
1aa1b11c 3251 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 3252 return -EINVAL;
3253 }
e3eb3250
RC		 3254
3255 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3256 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3257 r->modifier[i], i);
3258 return -EINVAL;
3259 }
570655b0
RC		 3260
3261 /* modifier specific checks: */
3262 switch (r->modifier[i]) {
3263 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3264 /* NOTE: the pitch restriction may be lifted later if it turns
3265 * out that no hw has this restriction:
3266 */
3267 if (r->pixel_format != DRM_FORMAT_NV12 ||
3268 width % 128 || height % 32 ||
3269 r->pitches[i] % 128) {
3270 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3271 return -EINVAL;
3272 }
3273 break;
3274
3275 default:
3276 break;
3277 }
d1b45d5f
VS		 3278 }
3279
bbe16a40
DV		 3280 for (i = num_planes; i < 4; i++) {
3281 if (r->modifier[i]) {
3282 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3283 return -EINVAL;
3284 }
3285
3286 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3287 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3288 continue;
3289
3290 if (r->handles[i]) {
3291 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3292 return -EINVAL;
3293 }
3294
3295 if (r->pitches[i]) {
3296 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3297 return -EINVAL;
3298 }
3299
3300 if (r->offsets[i]) {
3301 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3302 return -EINVAL;
3303 }
3304 }
3305
d1b45d5f
VS		 3306 return 0;
3307}
3308
9a6f5130
CW		 3309static struct drm_framebuffer *
3310internal_framebuffer_create(struct drm_device *dev,
1eb83451 3311 const struct drm_mode_fb_cmd2 *r,
9a6f5130 3312 struct drm_file *file_priv)
308e5bcb 3313{
f453ba04
DA		 3314 struct drm_mode_config *config = &dev->mode_config;
3315 struct drm_framebuffer *fb;
4a1b0714 3316 int ret;
f453ba04 3317
e3eb3250 3318 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
e3cc3520 3319 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
c394c2b0 3320 return ERR_PTR(-EINVAL);
e3cc3520
VS		 3321 }
3322
f453ba04 3323 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 3324 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 3325 r->width, config->min_width, config->max_width);
c394c2b0 3326 return ERR_PTR(-EINVAL);
f453ba04
DA		 3327 }
3328 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 3329 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 3330 r->height, config->min_height, config->max_height);
c394c2b0 3331 return ERR_PTR(-EINVAL);
f453ba04
DA		 3332 }
3333
e3eb3250
RC		 3334 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3335 !dev->mode_config.allow_fb_modifiers) {
3336 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3337 return ERR_PTR(-EINVAL);
3338 }
3339
d1b45d5f
VS		 3340 ret = framebuffer_check(r);
3341 if (ret)
c394c2b0 3342 return ERR_PTR(ret);
935b5977 3343
f453ba04 3344 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 3345 if (IS_ERR(fb)) {
1aa1b11c 3346 DRM_DEBUG_KMS("could not create framebuffer\n");
c394c2b0 3347 return fb;
f453ba04
DA		 3348 }
3349
c394c2b0
MR		 3350 return fb;
3351}
4b096ac1 3352
c394c2b0
MR		 3353/**
3354 * drm_mode_addfb2 - add an FB to the graphics configuration
3355 * @dev: drm device for the ioctl
3356 * @data: data pointer for the ioctl
3357 * @file_priv: drm file for the ioctl call
3358 *
3359 * Add a new FB to the specified CRTC, given a user request with format. This is
3360 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3361 * and uses fourcc codes as pixel format specifiers.
3362 *
3363 * Called by the user via ioctl.
3364 *
3365 * Returns:
1a498633 3366 * Zero on success, negative errno on failure.
c394c2b0
MR		 3367 */
3368int drm_mode_addfb2(struct drm_device *dev,
3369 void *data, struct drm_file *file_priv)
3370{
9a6f5130 3371 struct drm_mode_fb_cmd2 *r = data;
c394c2b0
MR		 3372 struct drm_framebuffer *fb;
3373
3374 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3375 return -EINVAL;
3376
9a6f5130 3377 fb = internal_framebuffer_create(dev, r, file_priv);
c394c2b0
MR		 3378 if (IS_ERR(fb))
3379 return PTR_ERR(fb);
3380
9a6f5130
CW		 3381 /* Transfer ownership to the filp for reaping on close */
3382
3383 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3384 mutex_lock(&file_priv->fbs_lock);
3385 r->fb_id = fb->base.id;
3386 list_add(&fb->filp_head, &file_priv->fbs);
3387 mutex_unlock(&file_priv->fbs_lock);
3388
c394c2b0 3389 return 0;
f453ba04
DA		 3390}
3391
3392/**
3393 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 3394 * @dev: drm device for the ioctl
3395 * @data: data pointer for the ioctl
3396 * @file_priv: drm file for the ioctl call
f453ba04 3397 *
f453ba04
DA		 3398 * Remove the FB specified by the user.
3399 *
3400 * Called by the user via ioctl.
3401 *
c8e32cc1 3402 * Returns:
1a498633 3403 * Zero on success, negative errno on failure.
f453ba04
DA		 3404 */
3405int drm_mode_rmfb(struct drm_device *dev,
3406 void *data, struct drm_file *file_priv)
3407{
f453ba04
DA		 3408 struct drm_framebuffer *fb = NULL;
3409 struct drm_framebuffer *fbl = NULL;
3410 uint32_t *id = data;
f453ba04
DA		 3411 int found = 0;
3412
fb3b06c8
DA		 3413 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3414 return -EINVAL;
3415
4b096ac1 3416 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 3417 mutex_lock(&dev->mode_config.fb_lock);
3418 fb = __drm_framebuffer_lookup(dev, *id);
3419 if (!fb)
3420 goto fail_lookup;
3421
f453ba04
DA		 3422 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3423 if (fb == fbl)
3424 found = 1;
2b677e8c
DV		 3425 if (!found)
3426 goto fail_lookup;
3427
4b096ac1 3428 list_del_init(&fb->filp_head);
2b677e8c 3429 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 3430 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3431
13803132 3432 drm_framebuffer_unreference(fb);
4b096ac1 3433
2b677e8c
DV		 3434 return 0;
3435
3436fail_lookup:
3437 mutex_unlock(&dev->mode_config.fb_lock);
3438 mutex_unlock(&file_priv->fbs_lock);
3439
37c4e705 3440 return -ENOENT;
f453ba04
DA		 3441}
3442
3443/**
3444 * drm_mode_getfb - get FB info
065a50ed
DV		 3445 * @dev: drm device for the ioctl
3446 * @data: data pointer for the ioctl
3447 * @file_priv: drm file for the ioctl call
f453ba04 3448 *
f453ba04
DA		 3449 * Lookup the FB given its ID and return info about it.
3450 *
3451 * Called by the user via ioctl.
3452 *
c8e32cc1 3453 * Returns:
1a498633 3454 * Zero on success, negative errno on failure.
f453ba04
DA		 3455 */
3456int drm_mode_getfb(struct drm_device *dev,
3457 void *data, struct drm_file *file_priv)
3458{
3459 struct drm_mode_fb_cmd *r = data;
f453ba04 3460 struct drm_framebuffer *fb;
58c0dca1 3461 int ret;
f453ba04 3462
fb3b06c8
DA		 3463 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3464 return -EINVAL;
3465
786b99ed 3466 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 3467 if (!fb)
37c4e705 3468 return -ENOENT;
f453ba04
DA		 3469
3470 r->height = fb->height;
3471 r->width = fb->width;
3472 r->depth = fb->depth;
3473 r->bpp = fb->bits_per_pixel;
01f2c773 3474 r->pitch = fb->pitches[0];
101b96f3 3475 if (fb->funcs->create_handle) {
09f308f7 3476 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 3477 drm_is_control_client(file_priv)) {
101b96f3
DH		 3478 ret = fb->funcs->create_handle(fb, file_priv,
3479 &r->handle);
3480 } else {
3481 /* GET_FB() is an unprivileged ioctl so we must not
3482 * return a buffer-handle to non-master processes! For
3483 * backwards-compatibility reasons, we cannot make
3484 * GET_FB() privileged, so just return an invalid handle
3485 * for non-masters. */
3486 r->handle = 0;
3487 ret = 0;
3488 }
3489 } else {
af26ef3b 3490 ret = -ENODEV;
101b96f3 3491 }
f453ba04 3492
58c0dca1
DV		 3493 drm_framebuffer_unreference(fb);
3494
f453ba04
DA		 3495 return ret;
3496}
3497
c8e32cc1
DV		 3498/**
3499 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3500 * @dev: drm device for the ioctl
3501 * @data: data pointer for the ioctl
3502 * @file_priv: drm file for the ioctl call
3503 *
3504 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3505 * rectangle list. Generic userspace which does frontbuffer rendering must call
3506 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3507 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3508 *
3509 * Modesetting drivers which always update the frontbuffer do not need to
3510 * implement the corresponding ->dirty framebuffer callback.
3511 *
3512 * Called by the user via ioctl.
3513 *
3514 * Returns:
1a498633 3515 * Zero on success, negative errno on failure.
c8e32cc1 3516 */
884840aa
JB		 3517int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3518 void *data, struct drm_file *file_priv)
3519{
3520 struct drm_clip_rect __user *clips_ptr;
3521 struct drm_clip_rect *clips = NULL;
3522 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 3523 struct drm_framebuffer *fb;
3524 unsigned flags;
3525 int num_clips;
4a1b0714 3526 int ret;
884840aa 3527
fb3b06c8
DA		 3528 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3529 return -EINVAL;
3530
786b99ed 3531 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 3532 if (!fb)
37c4e705 3533 return -ENOENT;
884840aa
JB		 3534
3535 num_clips = r->num_clips;
81f6c7f8 3536 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 3537
3538 if (!num_clips != !clips_ptr) {
3539 ret = -EINVAL;
3540 goto out_err1;
3541 }
3542
3543 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3544
3545 /* If userspace annotates copy, clips must come in pairs */
3546 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3547 ret = -EINVAL;
3548 goto out_err1;
3549 }
3550
3551 if (num_clips && clips_ptr) {
a5cd3351
XW		 3552 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3553 ret = -EINVAL;
3554 goto out_err1;
3555 }
bd3f0ff9 3556 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
884840aa
JB		 3557 if (!clips) {
3558 ret = -ENOMEM;
3559 goto out_err1;
3560 }
3561
3562 ret = copy_from_user(clips, clips_ptr,
3563 num_clips * sizeof(*clips));
e902a358
DC		 3564 if (ret) {
3565 ret = -EFAULT;
884840aa 3566 goto out_err2;
e902a358 3567 }
884840aa
JB		 3568 }
3569
3570 if (fb->funcs->dirty) {
02b00162
TH		 3571 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3572 clips, num_clips);
884840aa
JB		 3573 } else {
3574 ret = -ENOSYS;
884840aa
JB		 3575 }
3576
3577out_err2:
3578 kfree(clips);
3579out_err1:
4ccf097f
DV		 3580 drm_framebuffer_unreference(fb);
3581
884840aa
JB		 3582 return ret;
3583}
3584
3585
f453ba04
DA		 3586/**
3587 * drm_fb_release - remove and free the FBs on this file
065a50ed 3588 * @priv: drm file for the ioctl
f453ba04 3589 *
f453ba04
DA		 3590 * Destroy all the FBs associated with @filp.
3591 *
3592 * Called by the user via ioctl.
3593 *
c8e32cc1 3594 * Returns:
1a498633 3595 * Zero on success, negative errno on failure.
f453ba04 3596 */
ea39f835 3597void drm_fb_release(struct drm_file *priv)
f453ba04 3598{
f453ba04
DA		 3599 struct drm_framebuffer *fb, *tfb;
3600
1b116297
DV		 3601 /*
3602 * When the file gets released that means no one else can access the fb
e2db726b 3603 * list any more, so no need to grab fpriv->fbs_lock. And we need to
1b116297
DV		 3604 * avoid upsetting lockdep since the universal cursor code adds a
3605 * framebuffer while holding mutex locks.
3606 *
3607 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3608 * locks is impossible here since no one else but this function can get
3609 * at it any more.
3610 */
f453ba04 3611 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
4b096ac1 3612 list_del_init(&fb->filp_head);
2b677e8c 3613
73f7570b 3614 /* This drops the fpriv->fbs reference. */
13803132 3615 drm_framebuffer_unreference(fb);
f453ba04 3616 }
f453ba04
DA		 3617}
3618
c8e32cc1
DV		 3619/**
3620 * drm_property_create - create a new property type
3621 * @dev: drm device
3622 * @flags: flags specifying the property type
3623 * @name: name of the property
3624 * @num_values: number of pre-defined values
3625 *
3626 * This creates a new generic drm property which can then be attached to a drm
3627 * object with drm_object_attach_property. The returned property object must be
3628 * freed with drm_property_destroy.
3629 *
3b5b9932
DL		 3630 * Note that the DRM core keeps a per-device list of properties and that, if
3631 * drm_mode_config_cleanup() is called, it will destroy all properties created
3632 * by the driver.
3633 *
c8e32cc1
DV		 3634 * Returns:
3635 * A pointer to the newly created property on success, NULL on failure.
3636 */
f453ba04
DA		 3637struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3638 const char *name, int num_values)
3639{
3640 struct drm_property *property = NULL;
6bfc56aa 3641 int ret;
f453ba04
DA		 3642
3643 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3644 if (!property)
3645 return NULL;
3646
98f75de4
RC		 3647 property->dev = dev;
3648
f453ba04 3649 if (num_values) {
bd3f0ff9
TR		 3650 property->values = kcalloc(num_values, sizeof(uint64_t),
3651 GFP_KERNEL);
f453ba04
DA		 3652 if (!property->values)
3653 goto fail;
3654 }
3655
6bfc56aa
VS		 3656 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3657 if (ret)
3658 goto fail;
3659
f453ba04
DA		 3660 property->flags = flags;
3661 property->num_values = num_values;
3758b341 3662 INIT_LIST_HEAD(&property->enum_list);
f453ba04 3663
471dd2ef 3664 if (name) {
f453ba04 3665 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3666 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3667 }
f453ba04
DA		 3668
3669 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3670
3671 WARN_ON(!drm_property_type_valid(property));
3672
f453ba04
DA		 3673 return property;
3674fail:
6bfc56aa 3675 kfree(property->values);
f453ba04
DA		 3676 kfree(property);
3677 return NULL;
3678}
3679EXPORT_SYMBOL(drm_property_create);
3680
c8e32cc1 3681/**
2aa9d2bc 3682 * drm_property_create_enum - create a new enumeration property type
c8e32cc1
DV		 3683 * @dev: drm device
3684 * @flags: flags specifying the property type
3685 * @name: name of the property
3686 * @props: enumeration lists with property values
3687 * @num_values: number of pre-defined values
3688 *
3689 * This creates a new generic drm property which can then be attached to a drm
3690 * object with drm_object_attach_property. The returned property object must be
3691 * freed with drm_property_destroy.
3692 *
3693 * Userspace is only allowed to set one of the predefined values for enumeration
3694 * properties.
3695 *
3696 * Returns:
3697 * A pointer to the newly created property on success, NULL on failure.
3698 */
4a67d391
SH		 3699struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3700 const char *name,
3701 const struct drm_prop_enum_list *props,
3702 int num_values)
3703{
3704 struct drm_property *property;
3705 int i, ret;
3706
3707 flags |= DRM_MODE_PROP_ENUM;
3708
3709 property = drm_property_create(dev, flags, name, num_values);
3710 if (!property)
3711 return NULL;
3712
3713 for (i = 0; i < num_values; i++) {
3714 ret = drm_property_add_enum(property, i,
3715 props[i].type,
3716 props[i].name);
3717 if (ret) {
3718 drm_property_destroy(dev, property);
3719 return NULL;
3720 }
3721 }
3722
3723 return property;
3724}
3725EXPORT_SYMBOL(drm_property_create_enum);
3726
c8e32cc1 3727/**
2aa9d2bc 3728 * drm_property_create_bitmask - create a new bitmask property type
c8e32cc1
DV		 3729 * @dev: drm device
3730 * @flags: flags specifying the property type
3731 * @name: name of the property
3732 * @props: enumeration lists with property bitflags
295ee853
DV		 3733 * @num_props: size of the @props array
3734 * @supported_bits: bitmask of all supported enumeration values
c8e32cc1 3735 *
295ee853 3736 * This creates a new bitmask drm property which can then be attached to a drm
c8e32cc1
DV		 3737 * object with drm_object_attach_property. The returned property object must be
3738 * freed with drm_property_destroy.
3739 *
3740 * Compared to plain enumeration properties userspace is allowed to set any
3741 * or'ed together combination of the predefined property bitflag values
3742 *
3743 * Returns:
3744 * A pointer to the newly created property on success, NULL on failure.
3745 */
49e27545
RC		 3746struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3747 int flags, const char *name,
3748 const struct drm_prop_enum_list *props,
7689ffb3
VS		 3749 int num_props,
3750 uint64_t supported_bits)
49e27545
RC		 3751{
3752 struct drm_property *property;
7689ffb3
VS		 3753 int i, ret, index = 0;
3754 int num_values = hweight64(supported_bits);
49e27545
RC		 3755
3756 flags |= DRM_MODE_PROP_BITMASK;
3757
3758 property = drm_property_create(dev, flags, name, num_values);
3759 if (!property)
3760 return NULL;
7689ffb3
VS		 3761 for (i = 0; i < num_props; i++) {
3762 if (!(supported_bits & (1ULL << props[i].type)))
3763 continue;
49e27545 3764
7689ffb3
VS		 3765 if (WARN_ON(index >= num_values)) {
3766 drm_property_destroy(dev, property);
3767 return NULL;
3768 }
3769
3770 ret = drm_property_add_enum(property, index++,
49e27545
RC		 3771 props[i].type,
3772 props[i].name);
3773 if (ret) {
3774 drm_property_destroy(dev, property);
3775 return NULL;
3776 }
3777 }
3778
3779 return property;
3780}
3781EXPORT_SYMBOL(drm_property_create_bitmask);
3782
ebc44cf3
RC		 3783static struct drm_property *property_create_range(struct drm_device *dev,
3784 int flags, const char *name,
3785 uint64_t min, uint64_t max)
3786{
3787 struct drm_property *property;
3788
3789 property = drm_property_create(dev, flags, name, 2);
3790 if (!property)
3791 return NULL;
3792
3793 property->values[0] = min;
3794 property->values[1] = max;
3795
3796 return property;
3797}
3798
c8e32cc1 3799/**
960cd9d4 3800 * drm_property_create_range - create a new unsigned ranged property type
c8e32cc1
DV		 3801 * @dev: drm device
3802 * @flags: flags specifying the property type
3803 * @name: name of the property
3804 * @min: minimum value of the property
3805 * @max: maximum value of the property
3806 *
3807 * This creates a new generic drm property which can then be attached to a drm
3808 * object with drm_object_attach_property. The returned property object must be
3809 * freed with drm_property_destroy.
3810 *
960cd9d4
DV		 3811 * Userspace is allowed to set any unsigned integer value in the (min, max)
3812 * range inclusive.
c8e32cc1
DV		 3813 *
3814 * Returns:
3815 * A pointer to the newly created property on success, NULL on failure.
3816 */
d9bc3c02
SH		 3817struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3818 const char *name,
3819 uint64_t min, uint64_t max)
3820{
ebc44cf3
RC		 3821 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3822 name, min, max);
d9bc3c02
SH		 3823}
3824EXPORT_SYMBOL(drm_property_create_range);
3825
960cd9d4
DV		 3826/**
3827 * drm_property_create_signed_range - create a new signed ranged property type
3828 * @dev: drm device
3829 * @flags: flags specifying the property type
3830 * @name: name of the property
3831 * @min: minimum value of the property
3832 * @max: maximum value of the property
3833 *
3834 * This creates a new generic drm property which can then be attached to a drm
3835 * object with drm_object_attach_property. The returned property object must be
3836 * freed with drm_property_destroy.
3837 *
3838 * Userspace is allowed to set any signed integer value in the (min, max)
3839 * range inclusive.
3840 *
3841 * Returns:
3842 * A pointer to the newly created property on success, NULL on failure.
3843 */
ebc44cf3
RC		 3844struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3845 int flags, const char *name,
3846 int64_t min, int64_t max)
3847{
3848 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3849 name, I642U64(min), I642U64(max));
3850}
3851EXPORT_SYMBOL(drm_property_create_signed_range);
3852
960cd9d4
DV		 3853/**
3854 * drm_property_create_object - create a new object property type
3855 * @dev: drm device
3856 * @flags: flags specifying the property type
3857 * @name: name of the property
3858 * @type: object type from DRM_MODE_OBJECT_* defines
3859 *
3860 * This creates a new generic drm property which can then be attached to a drm
3861 * object with drm_object_attach_property. The returned property object must be
3862 * freed with drm_property_destroy.
3863 *
3864 * Userspace is only allowed to set this to any property value of the given
3865 * @type. Only useful for atomic properties, which is enforced.
3866 *
3867 * Returns:
3868 * A pointer to the newly created property on success, NULL on failure.
3869 */
98f75de4
RC		 3870struct drm_property *drm_property_create_object(struct drm_device *dev,
3871 int flags, const char *name, uint32_t type)
3872{
3873 struct drm_property *property;
3874
3875 flags |= DRM_MODE_PROP_OBJECT;
3876
960cd9d4
DV		 3877 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3878 return NULL;
3879
98f75de4
RC		 3880 property = drm_property_create(dev, flags, name, 1);
3881 if (!property)
3882 return NULL;
3883
3884 property->values[0] = type;
3885
3886 return property;
3887}
3888EXPORT_SYMBOL(drm_property_create_object);
3889
960cd9d4
DV		 3890/**
3891 * drm_property_create_bool - create a new boolean property type
3892 * @dev: drm device
3893 * @flags: flags specifying the property type
3894 * @name: name of the property
3895 *
3896 * This creates a new generic drm property which can then be attached to a drm
3897 * object with drm_object_attach_property. The returned property object must be
3898 * freed with drm_property_destroy.
3899 *
3900 * This is implemented as a ranged property with only {0, 1} as valid values.
3901 *
3902 * Returns:
3903 * A pointer to the newly created property on success, NULL on failure.
3904 */
3905struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3906 const char *name)
3907{
3908 return drm_property_create_range(dev, flags, name, 0, 1);
3909}
3910EXPORT_SYMBOL(drm_property_create_bool);
3911
c8e32cc1
DV		 3912/**
3913 * drm_property_add_enum - add a possible value to an enumeration property
3914 * @property: enumeration property to change
3915 * @index: index of the new enumeration
3916 * @value: value of the new enumeration
3917 * @name: symbolic name of the new enumeration
3918 *
3919 * This functions adds enumerations to a property.
3920 *
3921 * It's use is deprecated, drivers should use one of the more specific helpers
3922 * to directly create the property with all enumerations already attached.
3923 *
3924 * Returns:
3925 * Zero on success, error code on failure.
3926 */
f453ba04
DA		 3927int drm_property_add_enum(struct drm_property *property, int index,
3928 uint64_t value, const char *name)
3929{
3930 struct drm_property_enum *prop_enum;
3931
5ea22f24
RC		 3932 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3933 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 3934 return -EINVAL;
3935
3936 /*
3937 * Bitmask enum properties have the additional constraint of values
3938 * from 0 to 63
3939 */
5ea22f24
RC		 3940 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3941 (value > 63))
f453ba04
DA		 3942 return -EINVAL;
3943
3758b341
DV		 3944 if (!list_empty(&property->enum_list)) {
3945 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 3946 if (prop_enum->value == value) {
3947 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3948 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3949 return 0;
3950 }
3951 }
3952 }
3953
3954 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3955 if (!prop_enum)
3956 return -ENOMEM;
3957
3958 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3959 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3960 prop_enum->value = value;
3961
3962 property->values[index] = value;
3758b341 3963 list_add_tail(&prop_enum->head, &property->enum_list);
f453ba04
DA		 3964 return 0;
3965}
3966EXPORT_SYMBOL(drm_property_add_enum);
3967
c8e32cc1
DV		 3968/**
3969 * drm_property_destroy - destroy a drm property
3970 * @dev: drm device
3971 * @property: property to destry
3972 *
3973 * This function frees a property including any attached resources like
3974 * enumeration values.
3975 */
f453ba04
DA		 3976void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3977{
3978 struct drm_property_enum *prop_enum, *pt;
3979
3758b341 3980 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
f453ba04
DA		 3981 list_del(&prop_enum->head);
3982 kfree(prop_enum);
3983 }
3984
3985 if (property->num_values)
3986 kfree(property->values);
3987 drm_mode_object_put(dev, &property->base);
3988 list_del(&property->head);
3989 kfree(property);
3990}
3991EXPORT_SYMBOL(drm_property_destroy);
3992
c8e32cc1
DV		 3993/**
3994 * drm_object_attach_property - attach a property to a modeset object
3995 * @obj: drm modeset object
3996 * @property: property to attach
3997 * @init_val: initial value of the property
3998 *
3999 * This attaches the given property to the modeset object with the given initial
4000 * value. Currently this function cannot fail since the properties are stored in
4001 * a statically sized array.
4002 */
c543188a
PZ		 4003void drm_object_attach_property(struct drm_mode_object *obj,
4004 struct drm_property *property,
4005 uint64_t init_val)
4006{
7f88a9be 4007 int count = obj->properties->count;
c543188a 4008
7f88a9be
PZ		 4009 if (count == DRM_OBJECT_MAX_PROPERTY) {
4010 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4011 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4012 "you see this message on the same object type.\n",
4013 obj->type);
4014 return;
c543188a
PZ		 4015 }
4016
b17cd757 4017 obj->properties->properties[count] = property;
7f88a9be
PZ		 4018 obj->properties->values[count] = init_val;
4019 obj->properties->count++;
88a48e29
RC		 4020 if (property->flags & DRM_MODE_PROP_ATOMIC)
4021 obj->properties->atomic_count++;
c543188a
PZ		 4022}
4023EXPORT_SYMBOL(drm_object_attach_property);
4024
c8e32cc1
DV		 4025/**
4026 * drm_object_property_set_value - set the value of a property
4027 * @obj: drm mode object to set property value for
4028 * @property: property to set
4029 * @val: value the property should be set to
4030 *
4031 * This functions sets a given property on a given object. This function only
4032 * changes the software state of the property, it does not call into the
4033 * driver's ->set_property callback.
4034 *
4035 * Returns:
4036 * Zero on success, error code on failure.
4037 */
c543188a
PZ		 4038int drm_object_property_set_value(struct drm_mode_object *obj,
4039 struct drm_property *property, uint64_t val)
4040{
4041 int i;
4042
7f88a9be 4043 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4044 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4045 obj->properties->values[i] = val;
4046 return 0;
4047 }
4048 }
4049
4050 return -EINVAL;
4051}
4052EXPORT_SYMBOL(drm_object_property_set_value);
4053
c8e32cc1
DV		 4054/**
4055 * drm_object_property_get_value - retrieve the value of a property
4056 * @obj: drm mode object to get property value from
4057 * @property: property to retrieve
4058 * @val: storage for the property value
4059 *
4060 * This function retrieves the softare state of the given property for the given
4061 * property. Since there is no driver callback to retrieve the current property
4062 * value this might be out of sync with the hardware, depending upon the driver
4063 * and property.
4064 *
4065 * Returns:
4066 * Zero on success, error code on failure.
4067 */
c543188a
PZ		 4068int drm_object_property_get_value(struct drm_mode_object *obj,
4069 struct drm_property *property, uint64_t *val)
4070{
4071 int i;
4072
88a48e29
RC		 4073 /* read-only properties bypass atomic mechanism and still store
4074 * their value in obj->properties->values[].. mostly to avoid
4075 * having to deal w/ EDID and similar props in atomic paths:
4076 */
4077 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4078 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4079 return drm_atomic_get_property(obj, property, val);
4080
7f88a9be 4081 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4082 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4083 *val = obj->properties->values[i];
4084 return 0;
4085 }
4086 }
4087
4088 return -EINVAL;
4089}
4090EXPORT_SYMBOL(drm_object_property_get_value);
4091
c8e32cc1 4092/**
1a498633 4093 * drm_mode_getproperty_ioctl - get the property metadata
c8e32cc1
DV		 4094 * @dev: DRM device
4095 * @data: ioctl data
4096 * @file_priv: DRM file info
4097 *
1a498633
DV		 4098 * This function retrieves the metadata for a given property, like the different
4099 * possible values for an enum property or the limits for a range property.
4100 *
4101 * Blob properties are special
c8e32cc1
DV		 4102 *
4103 * Called by the user via ioctl.
4104 *
4105 * Returns:
1a498633 4106 * Zero on success, negative errno on failure.
c8e32cc1 4107 */
f453ba04
DA		 4108int drm_mode_getproperty_ioctl(struct drm_device *dev,
4109 void *data, struct drm_file *file_priv)
4110{
f453ba04
DA		 4111 struct drm_mode_get_property *out_resp = data;
4112 struct drm_property *property;
4113 int enum_count = 0;
f453ba04
DA		 4114 int value_count = 0;
4115 int ret = 0, i;
4116 int copied;
4117 struct drm_property_enum *prop_enum;
4118 struct drm_mode_property_enum __user *enum_ptr;
f453ba04 4119 uint64_t __user *values_ptr;
f453ba04 4120
fb3b06c8
DA		 4121 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4122 return -EINVAL;
4123
84849903 4124 drm_modeset_lock_all(dev);
a2b34e22
RC		 4125 property = drm_property_find(dev, out_resp->prop_id);
4126 if (!property) {
f27657f2 4127 ret = -ENOENT;
f453ba04
DA		 4128 goto done;
4129 }
f453ba04 4130
5ea22f24
RC		 4131 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4132 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3758b341 4133 list_for_each_entry(prop_enum, &property->enum_list, head)
f453ba04 4134 enum_count++;
f453ba04
DA		 4135 }
4136
4137 value_count = property->num_values;
4138
4139 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4140 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4141 out_resp->flags = property->flags;
4142
4143 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 4144 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 4145 for (i = 0; i < value_count; i++) {
4146 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4147 ret = -EFAULT;
4148 goto done;
4149 }
4150 }
4151 }
4152 out_resp->count_values = value_count;
4153
5ea22f24
RC		 4154 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4155 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 4156 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4157 copied = 0;
81f6c7f8 4158 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3758b341 4159 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 4160
4161 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4162 ret = -EFAULT;
4163 goto done;
4164 }
4165
4166 if (copy_to_user(&enum_ptr[copied].name,
4167 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4168 ret = -EFAULT;
4169 goto done;
4170 }
4171 copied++;
4172 }
4173 }
4174 out_resp->count_enum_blobs = enum_count;
4175 }
4176
3758b341
DV		 4177 /*
4178 * NOTE: The idea seems to have been to use this to read all the blob
4179 * property values. But nothing ever added them to the corresponding
4180 * list, userspace always used the special-purpose get_blob ioctl to
4181 * read the value for a blob property. It also doesn't make a lot of
4182 * sense to return values here when everything else is just metadata for
4183 * the property itself.
4184 */
4185 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4186 out_resp->count_enum_blobs = 0;
f453ba04 4187done:
84849903 4188 drm_modeset_unlock_all(dev);
f453ba04
DA		 4189 return ret;
4190}
4191
99531d9b
DS		 4192/**
4193 * drm_property_create_blob - Create new blob property
4194 *
4195 * Creates a new blob property for a specified DRM device, optionally
4196 * copying data.
4197 *
4198 * @dev: DRM device to create property for
4199 * @length: Length to allocate for blob data
4200 * @data: If specified, copies data into blob
10e8cb7e
DS		 4201 *
4202 * Returns:
4203 * New blob property with a single reference on success, or an ERR_PTR
4204 * value on failure.
99531d9b 4205 */
6bcacf51 4206struct drm_property_blob *
ecbbe59b 4207drm_property_create_blob(struct drm_device *dev, size_t length,
12e6cecd 4208 const void *data)
f453ba04
DA		 4209{
4210 struct drm_property_blob *blob;
6bfc56aa 4211 int ret;
f453ba04 4212
9ac0934b 4213 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
10e8cb7e 4214 return ERR_PTR(-EINVAL);
f453ba04
DA		 4215
4216 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4217 if (!blob)
10e8cb7e 4218 return ERR_PTR(-ENOMEM);
f453ba04 4219
e2f5d2ea
DS		 4220 /* This must be explicitly initialised, so we can safely call list_del
4221 * on it in the removal handler, even if it isn't in a file list. */
4222 INIT_LIST_HEAD(&blob->head_file);
8fb6e7a5 4223 blob->length = length;
6bcacf51 4224 blob->dev = dev;
8fb6e7a5 4225
99531d9b
DS		 4226 if (data)
4227 memcpy(blob->data, data, length);
8fb6e7a5
DS		 4228
4229 mutex_lock(&dev->mode_config.blob_lock);
4230
6bfc56aa
VS		 4231 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4232 if (ret) {
4233 kfree(blob);
8fb6e7a5 4234 mutex_unlock(&dev->mode_config.blob_lock);
10e8cb7e 4235 return ERR_PTR(-EINVAL);
6bfc56aa
VS		 4236 }
4237
6bcacf51 4238 kref_init(&blob->refcount);
f453ba04 4239
e2f5d2ea
DS		 4240 list_add_tail(&blob->head_global,
4241 &dev->mode_config.property_blob_list);
f453ba04 4242
8fb6e7a5 4243 mutex_unlock(&dev->mode_config.blob_lock);
f453ba04 4244
f453ba04
DA		 4245 return blob;
4246}
6bcacf51 4247EXPORT_SYMBOL(drm_property_create_blob);
f453ba04 4248
6bcacf51
DS		 4249/**
4250 * drm_property_free_blob - Blob property destructor
4251 *
4252 * Internal free function for blob properties; must not be used directly.
4253 *
f102c16e 4254 * @kref: Reference
6bcacf51
DS		 4255 */
4256static void drm_property_free_blob(struct kref *kref)
f453ba04 4257{
6bcacf51
DS		 4258 struct drm_property_blob *blob =
4259 container_of(kref, struct drm_property_blob, refcount);
4260
4261 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4262
e2f5d2ea
DS		 4263 list_del(&blob->head_global);
4264 list_del(&blob->head_file);
6bcacf51 4265 drm_mode_object_put(blob->dev, &blob->base);
8fb6e7a5 4266
f453ba04
DA		 4267 kfree(blob);
4268}
4269
6bcacf51
DS		 4270/**
4271 * drm_property_unreference_blob - Unreference a blob property
4272 *
4273 * Drop a reference on a blob property. May free the object.
4274 *
f102c16e 4275 * @blob: Pointer to blob property
6bcacf51
DS		 4276 */
4277void drm_property_unreference_blob(struct drm_property_blob *blob)
4278{
4279 struct drm_device *dev;
4280
4281 if (!blob)
4282 return;
4283
4284 dev = blob->dev;
4285
4286 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4287
4288 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4289 &dev->mode_config.blob_lock))
4290 mutex_unlock(&dev->mode_config.blob_lock);
4291 else
4292 might_lock(&dev->mode_config.blob_lock);
6bcacf51
DS		 4293}
4294EXPORT_SYMBOL(drm_property_unreference_blob);
4295
4296/**
4297 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4298 *
4299 * Drop a reference on a blob property. May free the object. This must be
4300 * called with blob_lock held.
4301 *
f102c16e 4302 * @blob: Pointer to blob property
6bcacf51
DS		 4303 */
4304static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4305{
4306 if (!blob)
4307 return;
4308
4309 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4310
4311 kref_put(&blob->refcount, drm_property_free_blob);
4312}
4313
e2f5d2ea
DS		 4314/**
4315 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4316 * @dev: DRM device
4317 * @file_priv: destroy all blobs owned by this file handle
4318 */
4319void drm_property_destroy_user_blobs(struct drm_device *dev,
4320 struct drm_file *file_priv)
4321{
4322 struct drm_property_blob *blob, *bt;
4323
4324 mutex_lock(&dev->mode_config.blob_lock);
4325
4326 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4327 list_del_init(&blob->head_file);
4328 drm_property_unreference_blob_locked(blob);
4329 }
4330
4331 mutex_unlock(&dev->mode_config.blob_lock);
4332}
4333
6bcacf51
DS		 4334/**
4335 * drm_property_reference_blob - Take a reference on an existing property
4336 *
4337 * Take a new reference on an existing blob property.
4338 *
f102c16e 4339 * @blob: Pointer to blob property
6bcacf51
DS		 4340 */
4341struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4342{
4343 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4344 kref_get(&blob->refcount);
4345 return blob;
4346}
4347EXPORT_SYMBOL(drm_property_reference_blob);
4348
4349/*
4350 * Like drm_property_lookup_blob, but does not return an additional reference.
4351 * Must be called with blob_lock held.
4352 */
4353static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4354 uint32_t id)
4355{
4356 struct drm_mode_object *obj = NULL;
4357 struct drm_property_blob *blob;
4358
4359 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4360
4361 mutex_lock(&dev->mode_config.idr_mutex);
4362 obj = idr_find(&dev->mode_config.crtc_idr, id);
4363 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4364 blob = NULL;
4365 else
4366 blob = obj_to_blob(obj);
4367 mutex_unlock(&dev->mode_config.idr_mutex);
4368
4369 return blob;
4370}
4371
4372/**
4373 * drm_property_lookup_blob - look up a blob property and take a reference
4374 * @dev: drm device
4375 * @id: id of the blob property
4376 *
4377 * If successful, this takes an additional reference to the blob property.
4378 * callers need to make sure to eventually unreference the returned property
4379 * again, using @drm_property_unreference_blob.
4380 */
4381struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4382 uint32_t id)
4383{
4384 struct drm_property_blob *blob;
4385
4386 mutex_lock(&dev->mode_config.blob_lock);
4387 blob = __drm_property_lookup_blob(dev, id);
4388 if (blob) {
4389 if (!kref_get_unless_zero(&blob->refcount))
4390 blob = NULL;
4391 }
4392 mutex_unlock(&dev->mode_config.blob_lock);
4393
4394 return blob;
4395}
4396EXPORT_SYMBOL(drm_property_lookup_blob);
4397
d2ed3436
DS		 4398/**
4399 * drm_property_replace_global_blob - atomically replace existing blob property
4400 * @dev: drm device
4401 * @replace: location of blob property pointer to be replaced
4402 * @length: length of data for new blob, or 0 for no data
4403 * @data: content for new blob, or NULL for no data
4404 * @obj_holds_id: optional object for property holding blob ID
4405 * @prop_holds_id: optional property holding blob ID
4406 * @return 0 on success or error on failure
4407 *
4408 * This function will atomically replace a global property in the blob list,
4409 * optionally updating a property which holds the ID of that property. It is
4410 * guaranteed to be atomic: no caller will be allowed to see intermediate
4411 * results, and either the entire operation will succeed and clean up the
4412 * previous property, or it will fail and the state will be unchanged.
4413 *
4414 * If length is 0 or data is NULL, no new blob will be created, and the holding
4415 * property, if specified, will be set to 0.
4416 *
4417 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4418 * by holding the relevant modesetting object lock for its parent.
4419 *
4420 * For example, a drm_connector has a 'PATH' property, which contains the ID
4421 * of a blob property with the value of the MST path information. Calling this
4422 * function with replace pointing to the connector's path_blob_ptr, length and
4423 * data set for the new path information, obj_holds_id set to the connector's
4424 * base object, and prop_holds_id set to the path property name, will perform
4425 * a completely atomic update. The access to path_blob_ptr is protected by the
4426 * caller holding a lock on the connector.
4427 */
4428static int drm_property_replace_global_blob(struct drm_device *dev,
4429 struct drm_property_blob **replace,
4430 size_t length,
4431 const void *data,
4432 struct drm_mode_object *obj_holds_id,
4433 struct drm_property *prop_holds_id)
4434{
4435 struct drm_property_blob *new_blob = NULL;
4436 struct drm_property_blob *old_blob = NULL;
4437 int ret;
4438
4439 WARN_ON(replace == NULL);
4440
4441 old_blob = *replace;
4442
4443 if (length && data) {
4444 new_blob = drm_property_create_blob(dev, length, data);
10e8cb7e
DS		 4445 if (IS_ERR(new_blob))
4446 return PTR_ERR(new_blob);
d2ed3436
DS		 4447 }
4448
4449 /* This does not need to be synchronised with blob_lock, as the
4450 * get_properties ioctl locks all modesetting objects, and
4451 * obj_holds_id must be locked before calling here, so we cannot
4452 * have its value out of sync with the list membership modified
4453 * below under blob_lock. */
4454 if (obj_holds_id) {
4455 ret = drm_object_property_set_value(obj_holds_id,
4456 prop_holds_id,
4457 new_blob ?
4458 new_blob->base.id : 0);
4459 if (ret != 0)
4460 goto err_created;
4461 }
4462
ec530829 4463 drm_property_unreference_blob(old_blob);
d2ed3436
DS		 4464 *replace = new_blob;
4465
4466 return 0;
4467
4468err_created:
6bcacf51 4469 drm_property_unreference_blob(new_blob);
d2ed3436
DS		 4470 return ret;
4471}
4472
c8e32cc1
DV		 4473/**
4474 * drm_mode_getblob_ioctl - get the contents of a blob property value
4475 * @dev: DRM device
4476 * @data: ioctl data
4477 * @file_priv: DRM file info
4478 *
4479 * This function retrieves the contents of a blob property. The value stored in
4480 * an object's blob property is just a normal modeset object id.
4481 *
4482 * Called by the user via ioctl.
4483 *
4484 * Returns:
1a498633 4485 * Zero on success, negative errno on failure.
c8e32cc1 4486 */
f453ba04
DA		 4487int drm_mode_getblob_ioctl(struct drm_device *dev,
4488 void *data, struct drm_file *file_priv)
4489{
f453ba04
DA		 4490 struct drm_mode_get_blob *out_resp = data;
4491 struct drm_property_blob *blob;
4492 int ret = 0;
81f6c7f8 4493 void __user *blob_ptr;
f453ba04 4494
fb3b06c8
DA		 4495 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4496 return -EINVAL;
4497
84849903 4498 drm_modeset_lock_all(dev);
8fb6e7a5 4499 mutex_lock(&dev->mode_config.blob_lock);
6bcacf51 4500 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
a2b34e22 4501 if (!blob) {
f27657f2 4502 ret = -ENOENT;
f453ba04
DA		 4503 goto done;
4504 }
f453ba04
DA		 4505
4506 if (out_resp->length == blob->length) {
81f6c7f8 4507 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4dfd909f 4508 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
f453ba04
DA		 4509 ret = -EFAULT;
4510 goto done;
4511 }
4512 }
4513 out_resp->length = blob->length;
4514
4515done:
8fb6e7a5 4516 mutex_unlock(&dev->mode_config.blob_lock);
84849903 4517 drm_modeset_unlock_all(dev);
f453ba04
DA		 4518 return ret;
4519}
4520
e2f5d2ea
DS		 4521/**
4522 * drm_mode_createblob_ioctl - create a new blob property
4523 * @dev: DRM device
4524 * @data: ioctl data
4525 * @file_priv: DRM file info
4526 *
4527 * This function creates a new blob property with user-defined values. In order
4528 * to give us sensible validation and checking when creating, rather than at
4529 * every potential use, we also require a type to be provided upfront.
4530 *
4531 * Called by the user via ioctl.
4532 *
4533 * Returns:
4534 * Zero on success, negative errno on failure.
4535 */
4536int drm_mode_createblob_ioctl(struct drm_device *dev,
4537 void *data, struct drm_file *file_priv)
4538{
4539 struct drm_mode_create_blob *out_resp = data;
4540 struct drm_property_blob *blob;
4541 void __user *blob_ptr;
4542 int ret = 0;
4543
4544 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4545 return -EINVAL;
4546
4547 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4548 if (IS_ERR(blob))
4549 return PTR_ERR(blob);
4550
4551 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4552 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4553 ret = -EFAULT;
4554 goto out_blob;
4555 }
4556
4557 /* Dropping the lock between create_blob and our access here is safe
4558 * as only the same file_priv can remove the blob; at this point, it is
4559 * not associated with any file_priv. */
4560 mutex_lock(&dev->mode_config.blob_lock);
4561 out_resp->blob_id = blob->base.id;
8731b269 4562 list_add_tail(&blob->head_file, &file_priv->blobs);
e2f5d2ea
DS		 4563 mutex_unlock(&dev->mode_config.blob_lock);
4564
4565 return 0;
4566
4567out_blob:
4568 drm_property_unreference_blob(blob);
4569 return ret;
4570}
4571
4572/**
4573 * drm_mode_destroyblob_ioctl - destroy a user blob property
4574 * @dev: DRM device
4575 * @data: ioctl data
4576 * @file_priv: DRM file info
4577 *
4578 * Destroy an existing user-defined blob property.
4579 *
4580 * Called by the user via ioctl.
4581 *
4582 * Returns:
4583 * Zero on success, negative errno on failure.
4584 */
4585int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4586 void *data, struct drm_file *file_priv)
4587{
4588 struct drm_mode_destroy_blob *out_resp = data;
4589 struct drm_property_blob *blob = NULL, *bt;
4590 bool found = false;
4591 int ret = 0;
4592
4593 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4594 return -EINVAL;
4595
4596 mutex_lock(&dev->mode_config.blob_lock);
4597 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4598 if (!blob) {
4599 ret = -ENOENT;
4600 goto err;
4601 }
4602
4603 /* Ensure the property was actually created by this user. */
4604 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4605 if (bt == blob) {
4606 found = true;
4607 break;
4608 }
4609 }
4610
4611 if (!found) {
4612 ret = -EPERM;
4613 goto err;
4614 }
4615
4616 /* We must drop head_file here, because we may not be the last
4617 * reference on the blob. */
4618 list_del_init(&blob->head_file);
4619 drm_property_unreference_blob_locked(blob);
4620 mutex_unlock(&dev->mode_config.blob_lock);
4621
4622 return 0;
4623
4624err:
4625 mutex_unlock(&dev->mode_config.blob_lock);
4626 return ret;
4627}
4628
cc7096fb
DA		 4629/**
4630 * drm_mode_connector_set_path_property - set tile property on connector
4631 * @connector: connector to set property on.
d2ed3436 4632 * @path: path to use for property; must not be NULL.
cc7096fb
DA		 4633 *
4634 * This creates a property to expose to userspace to specify a
4635 * connector path. This is mainly used for DisplayPort MST where
4636 * connectors have a topology and we want to allow userspace to give
4637 * them more meaningful names.
4638 *
4639 * Returns:
1a498633 4640 * Zero on success, negative errno on failure.
cc7096fb 4641 */
43aba7eb 4642int drm_mode_connector_set_path_property(struct drm_connector *connector,
12e6cecd 4643 const char *path)
43aba7eb
DA		 4644{
4645 struct drm_device *dev = connector->dev;
ecbbe59b 4646 int ret;
43aba7eb 4647
d2ed3436
DS		 4648 ret = drm_property_replace_global_blob(dev,
4649 &connector->path_blob_ptr,
4650 strlen(path) + 1,
4651 path,
4652 &connector->base,
4653 dev->mode_config.path_property);
43aba7eb
DA		 4654 return ret;
4655}
4656EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4657
6f134d7b
DA		 4658/**
4659 * drm_mode_connector_set_tile_property - set tile property on connector
4660 * @connector: connector to set property on.
4661 *
4662 * This looks up the tile information for a connector, and creates a
4663 * property for userspace to parse if it exists. The property is of
4664 * the form of 8 integers using ':' as a separator.
4665 *
4666 * Returns:
4667 * Zero on success, errno on failure.
4668 */
4669int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4670{
4671 struct drm_device *dev = connector->dev;
6f134d7b 4672 char tile[256];
d2ed3436 4673 int ret;
6f134d7b
DA		 4674
4675 if (!connector->has_tile) {
d2ed3436
DS		 4676 ret = drm_property_replace_global_blob(dev,
4677 &connector->tile_blob_ptr,
4678 0,
4679 NULL,
4680 &connector->base,
4681 dev->mode_config.tile_property);
6f134d7b
DA		 4682 return ret;
4683 }
4684
4685 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4686 connector->tile_group->id, connector->tile_is_single_monitor,
4687 connector->num_h_tile, connector->num_v_tile,
4688 connector->tile_h_loc, connector->tile_v_loc,
4689 connector->tile_h_size, connector->tile_v_size);
6f134d7b 4690
d2ed3436
DS		 4691 ret = drm_property_replace_global_blob(dev,
4692 &connector->tile_blob_ptr,
4693 strlen(tile) + 1,
4694 tile,
4695 &connector->base,
4696 dev->mode_config.tile_property);
6f134d7b
DA		 4697 return ret;
4698}
4699EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4700
c8e32cc1
DV		 4701/**
4702 * drm_mode_connector_update_edid_property - update the edid property of a connector
4703 * @connector: drm connector
4704 * @edid: new value of the edid property
4705 *
4706 * This function creates a new blob modeset object and assigns its id to the
4707 * connector's edid property.
4708 *
4709 * Returns:
1a498633 4710 * Zero on success, negative errno on failure.
c8e32cc1 4711 */
f453ba04 4712int drm_mode_connector_update_edid_property(struct drm_connector *connector,
12e6cecd 4713 const struct edid *edid)
f453ba04
DA		 4714{
4715 struct drm_device *dev = connector->dev;
d2ed3436 4716 size_t size = 0;
ecbbe59b 4717 int ret;
f453ba04 4718
4cf2b281
TW		 4719 /* ignore requests to set edid when overridden */
4720 if (connector->override_edid)
4721 return 0;
4722
d2ed3436 4723 if (edid)
e24ff467 4724 size = EDID_LENGTH * (1 + edid->extensions);
f453ba04 4725
d2ed3436
DS		 4726 ret = drm_property_replace_global_blob(dev,
4727 &connector->edid_blob_ptr,
4728 size,
4729 edid,
4730 &connector->base,
4731 dev->mode_config.edid_property);
f453ba04
DA		 4732 return ret;
4733}
4734EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4735
3843e71f
RC		 4736/* Some properties could refer to dynamic refcnt'd objects, or things that
4737 * need special locking to handle lifetime issues (ie. to ensure the prop
4738 * value doesn't become invalid part way through the property update due to
4739 * race). The value returned by reference via 'obj' should be passed back
4740 * to drm_property_change_valid_put() after the property is set (and the
4741 * object to which the property is attached has a chance to take it's own
4742 * reference).
4743 */
d34f20d6 4744bool drm_property_change_valid_get(struct drm_property *property,
3843e71f 4745 uint64_t value, struct drm_mode_object **ref)
26a34815 4746{
2ca651d1
TR		 4747 int i;
4748
26a34815
PZ		 4749 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4750 return false;
5ea22f24 4751
3843e71f
RC		 4752 *ref = NULL;
4753
5ea22f24 4754 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 4755 if (value < property->values[0] || value > property->values[1])
4756 return false;
4757 return true;
ebc44cf3
RC		 4758 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4759 int64_t svalue = U642I64(value);
4dfd909f 4760
ebc44cf3
RC		 4761 if (svalue < U642I64(property->values[0]) ||
4762 svalue > U642I64(property->values[1]))
4763 return false;
4764 return true;
5ea22f24 4765 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
592c20ee 4766 uint64_t valid_mask = 0;
4dfd909f 4767
49e27545
RC		 4768 for (i = 0; i < property->num_values; i++)
4769 valid_mask |= (1ULL << property->values[i]);
4770 return !(value & ~valid_mask);
5ea22f24 4771 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
6bcacf51
DS		 4772 struct drm_property_blob *blob;
4773
4774 if (value == 0)
4775 return true;
4776
4777 blob = drm_property_lookup_blob(property->dev, value);
4778 if (blob) {
4779 *ref = &blob->base;
4780 return true;
4781 } else {
4782 return false;
4783 }
98f75de4 4784 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
98f75de4
RC		 4785 /* a zero value for an object property translates to null: */
4786 if (value == 0)
4787 return true;
3843e71f
RC		 4788
4789 /* handle refcnt'd objects specially: */
4790 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4791 struct drm_framebuffer *fb;
4792 fb = drm_framebuffer_lookup(property->dev, value);
4793 if (fb) {
4794 *ref = &fb->base;
4795 return true;
4796 } else {
4797 return false;
4798 }
4799 } else {
4800 return _object_find(property->dev, value, property->values[0]) != NULL;
4801 }
26a34815 4802 }
2ca651d1
TR		 4803
4804 for (i = 0; i < property->num_values; i++)
4805 if (property->values[i] == value)
4806 return true;
4807 return false;
26a34815
PZ		 4808}
4809
d34f20d6 4810void drm_property_change_valid_put(struct drm_property *property,
3843e71f
RC		 4811 struct drm_mode_object *ref)
4812{
4813 if (!ref)
4814 return;
4815
4816 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4817 if (property->values[0] == DRM_MODE_OBJECT_FB)
4818 drm_framebuffer_unreference(obj_to_fb(ref));
da9b2a38
DS		 4819 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4820 drm_property_unreference_blob(obj_to_blob(ref));
3843e71f
RC		 4821}
4822
c8e32cc1
DV		 4823/**
4824 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4825 * @dev: DRM device
4826 * @data: ioctl data
4827 * @file_priv: DRM file info
4828 *
4829 * This function sets the current value for a connectors's property. It also
4830 * calls into a driver's ->set_property callback to update the hardware state
4831 *
4832 * Called by the user via ioctl.
4833 *
4834 * Returns:
1a498633 4835 * Zero on success, negative errno on failure.
c8e32cc1 4836 */
f453ba04
DA		 4837int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4838 void *data, struct drm_file *file_priv)
4839{
0057d8dd
PZ		 4840 struct drm_mode_connector_set_property *conn_set_prop = data;
4841 struct drm_mode_obj_set_property obj_set_prop = {
4842 .value = conn_set_prop->value,
4843 .prop_id = conn_set_prop->prop_id,
4844 .obj_id = conn_set_prop->connector_id,
4845 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4846 };
fb3b06c8 4847
0057d8dd
PZ		 4848 /* It does all the locking and checking we need */
4849 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 4850}
4851
c543188a
PZ		 4852static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4853 struct drm_property *property,
4854 uint64_t value)
4855{
4856 int ret = -EINVAL;
4857 struct drm_connector *connector = obj_to_connector(obj);
4858
4859 /* Do DPMS ourselves */
4860 if (property == connector->dev->mode_config.dpms_property) {
3558c112 4861 ret = (*connector->funcs->dpms)(connector, (int)value);
c543188a
PZ		 4862 } else if (connector->funcs->set_property)
4863 ret = connector->funcs->set_property(connector, property, value);
4864
4865 /* store the property value if successful */
4866 if (!ret)
58495563 4867 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 4868 return ret;
4869}
4870
bffd9de0
PZ		 4871static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4872 struct drm_property *property,
4873 uint64_t value)
4874{
4875 int ret = -EINVAL;
4876 struct drm_crtc *crtc = obj_to_crtc(obj);
4877
4878 if (crtc->funcs->set_property)
4879 ret = crtc->funcs->set_property(crtc, property, value);
4880 if (!ret)
4881 drm_object_property_set_value(obj, property, value);
4882
4883 return ret;
4884}
4885
3a5f87c2
TW		 4886/**
4887 * drm_mode_plane_set_obj_prop - set the value of a property
4888 * @plane: drm plane object to set property value for
4889 * @property: property to set
4890 * @value: value the property should be set to
4891 *
4892 * This functions sets a given property on a given plane object. This function
4893 * calls the driver's ->set_property callback and changes the software state of
4894 * the property if the callback succeeds.
4895 *
4896 * Returns:
4897 * Zero on success, error code on failure.
4898 */
4899int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4900 struct drm_property *property,
4901 uint64_t value)
4d93914a
RC		 4902{
4903 int ret = -EINVAL;
3a5f87c2 4904 struct drm_mode_object *obj = &plane->base;
4d93914a
RC		 4905
4906 if (plane->funcs->set_property)
4907 ret = plane->funcs->set_property(plane, property, value);
4908 if (!ret)
4909 drm_object_property_set_value(obj, property, value);
4910
4911 return ret;
4912}
3a5f87c2 4913EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4d93914a 4914
c8e32cc1 4915/**
1a498633 4916 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
c8e32cc1
DV		 4917 * @dev: DRM device
4918 * @data: ioctl data
4919 * @file_priv: DRM file info
4920 *
4921 * This function retrieves the current value for an object's property. Compared
4922 * to the connector specific ioctl this one is extended to also work on crtc and
4923 * plane objects.
4924 *
4925 * Called by the user via ioctl.
4926 *
4927 * Returns:
1a498633 4928 * Zero on success, negative errno on failure.
c8e32cc1 4929 */
c543188a
PZ		 4930int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4931 struct drm_file *file_priv)
4932{
4933 struct drm_mode_obj_get_properties *arg = data;
4934 struct drm_mode_object *obj;
4935 int ret = 0;
c543188a
PZ		 4936
4937 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4938 return -EINVAL;
4939
84849903 4940 drm_modeset_lock_all(dev);
c543188a
PZ		 4941
4942 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4943 if (!obj) {
f27657f2 4944 ret = -ENOENT;
c543188a
PZ		 4945 goto out;
4946 }
4947 if (!obj->properties) {
4948 ret = -EINVAL;
4949 goto out;
4950 }
4951
88a48e29 4952 ret = get_properties(obj, file_priv->atomic,
95cbf110
RC		 4953 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4954 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4955 &arg->count_props);
c543188a 4956
c543188a 4957out:
84849903 4958 drm_modeset_unlock_all(dev);
c543188a
PZ		 4959 return ret;
4960}
4961
c8e32cc1
DV		 4962/**
4963 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4964 * @dev: DRM device
4965 * @data: ioctl data
4966 * @file_priv: DRM file info
4967 *
4968 * This function sets the current value for an object's property. It also calls
4969 * into a driver's ->set_property callback to update the hardware state.
4970 * Compared to the connector specific ioctl this one is extended to also work on
4971 * crtc and plane objects.
4972 *
4973 * Called by the user via ioctl.
4974 *
4975 * Returns:
1a498633 4976 * Zero on success, negative errno on failure.
c8e32cc1 4977 */
c543188a
PZ		 4978int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4979 struct drm_file *file_priv)
4980{
4981 struct drm_mode_obj_set_property *arg = data;
4982 struct drm_mode_object *arg_obj;
4983 struct drm_mode_object *prop_obj;
4984 struct drm_property *property;
3843e71f
RC		 4985 int i, ret = -EINVAL;
4986 struct drm_mode_object *ref;
c543188a
PZ		 4987
4988 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4989 return -EINVAL;
4990
84849903 4991 drm_modeset_lock_all(dev);
c543188a
PZ		 4992
4993 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 4994 if (!arg_obj) {
4995 ret = -ENOENT;
c543188a 4996 goto out;
f27657f2 4997 }
c543188a
PZ		 4998 if (!arg_obj->properties)
4999 goto out;
5000
7f88a9be 5001 for (i = 0; i < arg_obj->properties->count; i++)
b17cd757 5002 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
c543188a
PZ		 5003 break;
5004
7f88a9be 5005 if (i == arg_obj->properties->count)
c543188a
PZ		 5006 goto out;
5007
5008 prop_obj = drm_mode_object_find(dev, arg->prop_id,
5009 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 5010 if (!prop_obj) {
5011 ret = -ENOENT;
c543188a 5012 goto out;
f27657f2 5013 }
c543188a
PZ		 5014 property = obj_to_property(prop_obj);
5015
3843e71f 5016 if (!drm_property_change_valid_get(property, arg->value, &ref))
c543188a
PZ		 5017 goto out;
5018
5019 switch (arg_obj->type) {
5020 case DRM_MODE_OBJECT_CONNECTOR:
5021 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
5022 arg->value);
5023 break;
bffd9de0
PZ		 5024 case DRM_MODE_OBJECT_CRTC:
5025 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
5026 break;
4d93914a 5027 case DRM_MODE_OBJECT_PLANE:
3a5f87c2
TW		 5028 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
5029 property, arg->value);
4d93914a 5030 break;
c543188a
PZ		 5031 }
5032
3843e71f
RC		 5033 drm_property_change_valid_put(property, ref);
5034
c543188a 5035out:
84849903 5036 drm_modeset_unlock_all(dev);
c543188a
PZ		 5037 return ret;
5038}
5039
c8e32cc1
DV		 5040/**
5041 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5042 * @connector: connector to attach
5043 * @encoder: encoder to attach @connector to
5044 *
5045 * This function links up a connector to an encoder. Note that the routing
5046 * restrictions between encoders and crtcs are exposed to userspace through the
5047 * possible_clones and possible_crtcs bitmasks.
5048 *
5049 * Returns:
1a498633 5050 * Zero on success, negative errno on failure.
c8e32cc1 5051 */
f453ba04
DA		 5052int drm_mode_connector_attach_encoder(struct drm_connector *connector,
5053 struct drm_encoder *encoder)
5054{
5055 int i;
5056
eb47fe80
TR		 5057 /*
5058 * In the past, drivers have attempted to model the static association
5059 * of connector to encoder in simple connector/encoder devices using a
5060 * direct assignment of connector->encoder = encoder. This connection
5061 * is a logical one and the responsibility of the core, so drivers are
5062 * expected not to mess with this.
5063 *
5064 * Note that the error return should've been enough here, but a large
5065 * majority of drivers ignores the return value, so add in a big WARN
5066 * to get people's attention.
5067 */
5068 if (WARN_ON(connector->encoder))
5069 return -EINVAL;
5070
f453ba04
DA		 5071 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5072 if (connector->encoder_ids[i] == 0) {
5073 connector->encoder_ids[i] = encoder->base.id;
5074 return 0;
5075 }
5076 }
5077 return -ENOMEM;
5078}
5079EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5080
c8e32cc1
DV		 5081/**
5082 * drm_mode_crtc_set_gamma_size - set the gamma table size
5083 * @crtc: CRTC to set the gamma table size for
5084 * @gamma_size: size of the gamma table
5085 *
5086 * Drivers which support gamma tables should set this to the supported gamma
5087 * table size when initializing the CRTC. Currently the drm core only supports a
5088 * fixed gamma table size.
5089 *
5090 * Returns:
1a498633 5091 * Zero on success, negative errno on failure.
c8e32cc1 5092 */
4cae5b84 5093int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 5094 int gamma_size)
f453ba04
DA		 5095{
5096 crtc->gamma_size = gamma_size;
5097
bd3f0ff9
TR		 5098 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5099 GFP_KERNEL);
f453ba04
DA		 5100 if (!crtc->gamma_store) {
5101 crtc->gamma_size = 0;
4cae5b84 5102 return -ENOMEM;
f453ba04
DA		 5103 }
5104
4cae5b84 5105 return 0;
f453ba04
DA		 5106}
5107EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5108
c8e32cc1
DV		 5109/**
5110 * drm_mode_gamma_set_ioctl - set the gamma table
5111 * @dev: DRM device
5112 * @data: ioctl data
5113 * @file_priv: DRM file info
5114 *
5115 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5116 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5117 *
5118 * Called by the user via ioctl.
5119 *
5120 * Returns:
1a498633 5121 * Zero on success, negative errno on failure.
c8e32cc1 5122 */
f453ba04
DA		 5123int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5124 void *data, struct drm_file *file_priv)
5125{
5126 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 5127 struct drm_crtc *crtc;
5128 void *r_base, *g_base, *b_base;
5129 int size;
5130 int ret = 0;
5131
fb3b06c8
DA		 5132 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5133 return -EINVAL;
5134
84849903 5135 drm_modeset_lock_all(dev);
a2b34e22
RC		 5136 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5137 if (!crtc) {
f27657f2 5138 ret = -ENOENT;
f453ba04
DA		 5139 goto out;
5140 }
f453ba04 5141
ebe0f244
LP		 5142 if (crtc->funcs->gamma_set == NULL) {
5143 ret = -ENOSYS;
5144 goto out;
5145 }
5146
f453ba04
DA		 5147 /* memcpy into gamma store */
5148 if (crtc_lut->gamma_size != crtc->gamma_size) {
5149 ret = -EINVAL;
5150 goto out;
5151 }
5152
5153 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5154 r_base = crtc->gamma_store;
5155 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5156 ret = -EFAULT;
5157 goto out;
5158 }
5159
5160 g_base = r_base + size;
5161 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5162 ret = -EFAULT;
5163 goto out;
5164 }
5165
5166 b_base = g_base + size;
5167 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5168 ret = -EFAULT;
5169 goto out;
5170 }
5171
7203425a 5172 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 5173
5174out:
84849903 5175 drm_modeset_unlock_all(dev);
f453ba04
DA		 5176 return ret;
5177
5178}
5179
c8e32cc1
DV		 5180/**
5181 * drm_mode_gamma_get_ioctl - get the gamma table
5182 * @dev: DRM device
5183 * @data: ioctl data
5184 * @file_priv: DRM file info
5185 *
5186 * Copy the current gamma table into the storage provided. This also provides
5187 * the gamma table size the driver expects, which can be used to size the
5188 * allocated storage.
5189 *
5190 * Called by the user via ioctl.
5191 *
5192 * Returns:
1a498633 5193 * Zero on success, negative errno on failure.
c8e32cc1 5194 */
f453ba04
DA		 5195int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5196 void *data, struct drm_file *file_priv)
5197{
5198 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 5199 struct drm_crtc *crtc;
5200 void *r_base, *g_base, *b_base;
5201 int size;
5202 int ret = 0;
5203
fb3b06c8
DA		 5204 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5205 return -EINVAL;
5206
84849903 5207 drm_modeset_lock_all(dev);
a2b34e22
RC		 5208 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5209 if (!crtc) {
f27657f2 5210 ret = -ENOENT;
f453ba04
DA		 5211 goto out;
5212 }
f453ba04
DA		 5213
5214 /* memcpy into gamma store */
5215 if (crtc_lut->gamma_size != crtc->gamma_size) {
5216 ret = -EINVAL;
5217 goto out;
5218 }
5219
5220 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5221 r_base = crtc->gamma_store;
5222 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5223 ret = -EFAULT;
5224 goto out;
5225 }
5226
5227 g_base = r_base + size;
5228 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5229 ret = -EFAULT;
5230 goto out;
5231 }
5232
5233 b_base = g_base + size;
5234 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5235 ret = -EFAULT;
5236 goto out;
5237 }
5238out:
84849903 5239 drm_modeset_unlock_all(dev);
f453ba04
DA		 5240 return ret;
5241}
d91d8a3f 5242
c8e32cc1
DV		 5243/**
5244 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5245 * @dev: DRM device
5246 * @data: ioctl data
5247 * @file_priv: DRM file info
5248 *
5249 * This schedules an asynchronous update on a given CRTC, called page flip.
5250 * Optionally a drm event is generated to signal the completion of the event.
5251 * Generic drivers cannot assume that a pageflip with changed framebuffer
5252 * properties (including driver specific metadata like tiling layout) will work,
5253 * but some drivers support e.g. pixel format changes through the pageflip
5254 * ioctl.
5255 *
5256 * Called by the user via ioctl.
5257 *
5258 * Returns:
1a498633 5259 * Zero on success, negative errno on failure.
c8e32cc1 5260 */
d91d8a3f
KH		 5261int drm_mode_page_flip_ioctl(struct drm_device *dev,
5262 void *data, struct drm_file *file_priv)
5263{
5264 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 5265 struct drm_crtc *crtc;
3d30a59b 5266 struct drm_framebuffer *fb = NULL;
d91d8a3f
KH		 5267 struct drm_pending_vblank_event *e = NULL;
5268 unsigned long flags;
5269 int ret = -EINVAL;
5270
5271 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5272 page_flip->reserved != 0)
5273 return -EINVAL;
5274
62f2104f
KP		 5275 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5276 return -EINVAL;
5277
a2b34e22
RC		 5278 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5279 if (!crtc)
f27657f2 5280 return -ENOENT;
d91d8a3f 5281
4d02e2de 5282 drm_modeset_lock_crtc(crtc, crtc->primary);
f4510a27 5283 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 5284 /* The framebuffer is currently unbound, presumably
5285 * due to a hotplug event, that userspace has not
5286 * yet discovered.
5287 */
5288 ret = -EBUSY;
5289 goto out;
5290 }
5291
d91d8a3f
KH		 5292 if (crtc->funcs->page_flip == NULL)
5293 goto out;
5294
786b99ed 5295 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 5296 if (!fb) {
5297 ret = -ENOENT;
d91d8a3f 5298 goto out;
37c4e705 5299 }
d91d8a3f 5300
2afa701d
VS		 5301 if (crtc->state) {
5302 const struct drm_plane_state *state = crtc->primary->state;
5303
5304 ret = check_src_coords(state->src_x, state->src_y,
5305 state->src_w, state->src_h, fb);
5306 } else {
5307 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5308 }
c11e9283 5309 if (ret)
5f61bb42 5310 goto out;
5f61bb42 5311
f4510a27 5312 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 5313 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5314 ret = -EINVAL;
5315 goto out;
5316 }
5317
d91d8a3f
KH		 5318 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5319 ret = -ENOMEM;
5320 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5321 if (file_priv->event_space < sizeof(e->event)) {
d91d8a3f
KH		 5322 spin_unlock_irqrestore(&dev->event_lock, flags);
5323 goto out;
5324 }
f76511b9 5325 file_priv->event_space -= sizeof(e->event);
d91d8a3f
KH		 5326 spin_unlock_irqrestore(&dev->event_lock, flags);
5327
f76511b9 5328 e = kzalloc(sizeof(*e), GFP_KERNEL);
d91d8a3f
KH		 5329 if (e == NULL) {
5330 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5331 file_priv->event_space += sizeof(e->event);
d91d8a3f
KH		 5332 spin_unlock_irqrestore(&dev->event_lock, flags);
5333 goto out;
5334 }
5335
7bd4d7be 5336 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
f76511b9 5337 e->event.base.length = sizeof(e->event);
d91d8a3f
KH		 5338 e->event.user_data = page_flip->user_data;
5339 e->base.event = &e->event.base;
5340 e->base.file_priv = file_priv;
5341 e->base.destroy =
5342 (void (*) (struct drm_pending_event *)) kfree;
5343 }
5344
3d30a59b 5345 crtc->primary->old_fb = crtc->primary->fb;
ed8d1975 5346 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 5347 if (ret) {
aef6a7ee
JS		 5348 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5349 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5350 file_priv->event_space += sizeof(e->event);
aef6a7ee
JS		 5351 spin_unlock_irqrestore(&dev->event_lock, flags);
5352 kfree(e);
5353 }
b0d12325 5354 /* Keep the old fb, don't unref it. */
3d30a59b 5355 crtc->primary->old_fb = NULL;
b0d12325 5356 } else {
3cb43cc0 5357 crtc->primary->fb = fb;
b0d12325
DV		 5358 /* Unref only the old framebuffer. */
5359 fb = NULL;
d91d8a3f
KH		 5360 }
5361
5362out:
b0d12325
DV		 5363 if (fb)
5364 drm_framebuffer_unreference(fb);
3d30a59b
DV		 5365 if (crtc->primary->old_fb)
5366 drm_framebuffer_unreference(crtc->primary->old_fb);
5367 crtc->primary->old_fb = NULL;
d059f652 5368 drm_modeset_unlock_crtc(crtc);
b4d5e7d1 5369
d91d8a3f
KH		 5370 return ret;
5371}
eb033556 5372
c8e32cc1
DV		 5373/**
5374 * drm_mode_config_reset - call ->reset callbacks
5375 * @dev: drm device
5376 *
5377 * This functions calls all the crtc's, encoder's and connector's ->reset
5378 * callback. Drivers can use this in e.g. their driver load or resume code to
5379 * reset hardware and software state.
5380 */
eb033556
CW		 5381void drm_mode_config_reset(struct drm_device *dev)
5382{
5383 struct drm_crtc *crtc;
2a0d7cfd 5384 struct drm_plane *plane;
eb033556
CW		 5385 struct drm_encoder *encoder;
5386 struct drm_connector *connector;
5387
e4f62546 5388 drm_for_each_plane(plane, dev)
2a0d7cfd
DV		 5389 if (plane->funcs->reset)
5390 plane->funcs->reset(plane);
5391
e4f62546 5392 drm_for_each_crtc(crtc, dev)
eb033556
CW		 5393 if (crtc->funcs->reset)
5394 crtc->funcs->reset(crtc);
5395
e4f62546 5396 drm_for_each_encoder(encoder, dev)
eb033556
CW		 5397 if (encoder->funcs->reset)
5398 encoder->funcs->reset(encoder);
5399
f8c2ba31 5400 mutex_lock(&dev->mode_config.mutex);
4eebf60b 5401 drm_for_each_connector(connector, dev)
eb033556
CW		 5402 if (connector->funcs->reset)
5403 connector->funcs->reset(connector);
f8c2ba31 5404 mutex_unlock(&dev->mode_config.mutex);
eb033556
CW		 5405}
5406EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 5407
c8e32cc1
DV		 5408/**
5409 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5410 * @dev: DRM device
5411 * @data: ioctl data
5412 * @file_priv: DRM file info
5413 *
5414 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5415 * TTM or something else entirely) and returns the resulting buffer handle. This
5416 * handle can then be wrapped up into a framebuffer modeset object.
5417 *
5418 * Note that userspace is not allowed to use such objects for render
5419 * acceleration - drivers must create their own private ioctls for such a use
5420 * case.
5421 *
5422 * Called by the user via ioctl.
5423 *
5424 * Returns:
1a498633 5425 * Zero on success, negative errno on failure.
c8e32cc1 5426 */
ff72145b
DA		 5427int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5428 void *data, struct drm_file *file_priv)
5429{
5430 struct drm_mode_create_dumb *args = data;
b28cd41f 5431 u32 cpp, stride, size;
ff72145b
DA		 5432
5433 if (!dev->driver->dumb_create)
5434 return -ENOSYS;
b28cd41f
DH		 5435 if (!args->width || !args->height || !args->bpp)
5436 return -EINVAL;
5437
5438 /* overflow checks for 32bit size calculations */
00e72089 5439 /* NOTE: DIV_ROUND_UP() can overflow */
b28cd41f 5440 cpp = DIV_ROUND_UP(args->bpp, 8);
00e72089 5441 if (!cpp || cpp > 0xffffffffU / args->width)
b28cd41f
DH		 5442 return -EINVAL;
5443 stride = cpp * args->width;
5444 if (args->height > 0xffffffffU / stride)
5445 return -EINVAL;
5446
5447 /* test for wrap-around */
5448 size = args->height * stride;
5449 if (PAGE_ALIGN(size) == 0)
5450 return -EINVAL;
5451
f6085952
TR		 5452 /*
5453 * handle, pitch and size are output parameters. Zero them out to
5454 * prevent drivers from accidentally using uninitialized data. Since
5455 * not all existing userspace is clearing these fields properly we
5456 * cannot reject IOCTL with garbage in them.
5457 */
5458 args->handle = 0;
5459 args->pitch = 0;
5460 args->size = 0;
5461
ff72145b
DA		 5462 return dev->driver->dumb_create(file_priv, dev, args);
5463}
5464
c8e32cc1
DV		 5465/**
5466 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5467 * @dev: DRM device
5468 * @data: ioctl data
5469 * @file_priv: DRM file info
5470 *
5471 * Allocate an offset in the drm device node's address space to be able to
5472 * memory map a dumb buffer.
5473 *
5474 * Called by the user via ioctl.
5475 *
5476 * Returns:
1a498633 5477 * Zero on success, negative errno on failure.
c8e32cc1 5478 */
ff72145b
DA		 5479int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5480 void *data, struct drm_file *file_priv)
5481{
5482 struct drm_mode_map_dumb *args = data;
5483
5484 /* call driver ioctl to get mmap offset */
5485 if (!dev->driver->dumb_map_offset)
5486 return -ENOSYS;
5487
5488 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5489}
5490
c8e32cc1
DV		 5491/**
5492 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5493 * @dev: DRM device
5494 * @data: ioctl data
5495 * @file_priv: DRM file info
5496 *
5497 * This destroys the userspace handle for the given dumb backing storage buffer.
5498 * Since buffer objects must be reference counted in the kernel a buffer object
5499 * won't be immediately freed if a framebuffer modeset object still uses it.
5500 *
5501 * Called by the user via ioctl.
5502 *
5503 * Returns:
1a498633 5504 * Zero on success, negative errno on failure.
c8e32cc1 5505 */
ff72145b
DA		 5506int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5507 void *data, struct drm_file *file_priv)
5508{
5509 struct drm_mode_destroy_dumb *args = data;
5510
5511 if (!dev->driver->dumb_destroy)
5512 return -ENOSYS;
5513
5514 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5515}
248dbc23 5516
c8e32cc1
DV		 5517/**
5518 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5519 * @format: pixel format (DRM_FORMAT_*)
5520 * @depth: storage for the depth value
5521 * @bpp: storage for the bpp value
5522 *
5523 * This only supports RGB formats here for compat with code that doesn't use
5524 * pixel formats directly yet.
248dbc23
DA		 5525 */
5526void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5527 int *bpp)
5528{
5529 switch (format) {
c51a6bc5 5530 case DRM_FORMAT_C8:
04b3924d
VS		 5531 case DRM_FORMAT_RGB332:
5532 case DRM_FORMAT_BGR233:
248dbc23
DA		 5533 *depth = 8;
5534 *bpp = 8;
5535 break;
04b3924d
VS		 5536 case DRM_FORMAT_XRGB1555:
5537 case DRM_FORMAT_XBGR1555:
5538 case DRM_FORMAT_RGBX5551:
5539 case DRM_FORMAT_BGRX5551:
5540 case DRM_FORMAT_ARGB1555:
5541 case DRM_FORMAT_ABGR1555:
5542 case DRM_FORMAT_RGBA5551:
5543 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 5544 *depth = 15;
5545 *bpp = 16;
5546 break;
04b3924d
VS		 5547 case DRM_FORMAT_RGB565:
5548 case DRM_FORMAT_BGR565:
248dbc23
DA		 5549 *depth = 16;
5550 *bpp = 16;
5551 break;
04b3924d
VS		 5552 case DRM_FORMAT_RGB888:
5553 case DRM_FORMAT_BGR888:
5554 *depth = 24;
5555 *bpp = 24;
5556 break;
5557 case DRM_FORMAT_XRGB8888:
5558 case DRM_FORMAT_XBGR8888:
5559 case DRM_FORMAT_RGBX8888:
5560 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 5561 *depth = 24;
5562 *bpp = 32;
5563 break;
04b3924d
VS		 5564 case DRM_FORMAT_XRGB2101010:
5565 case DRM_FORMAT_XBGR2101010:
5566 case DRM_FORMAT_RGBX1010102:
5567 case DRM_FORMAT_BGRX1010102:
5568 case DRM_FORMAT_ARGB2101010:
5569 case DRM_FORMAT_ABGR2101010:
5570 case DRM_FORMAT_RGBA1010102:
5571 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 5572 *depth = 30;
5573 *bpp = 32;
5574 break;
04b3924d
VS		 5575 case DRM_FORMAT_ARGB8888:
5576 case DRM_FORMAT_ABGR8888:
5577 case DRM_FORMAT_RGBA8888:
5578 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 5579 *depth = 32;
5580 *bpp = 32;
5581 break;
5582 default:
23c453a4
VS		 5583 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5584 drm_get_format_name(format));
248dbc23
DA		 5585 *depth = 0;
5586 *bpp = 0;
5587 break;
5588 }
5589}
5590EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 5591
5592/**
5593 * drm_format_num_planes - get the number of planes for format
5594 * @format: pixel format (DRM_FORMAT_*)
5595 *
c8e32cc1 5596 * Returns:
141670e9
VS		 5597 * The number of planes used by the specified pixel format.
5598 */
5599int drm_format_num_planes(uint32_t format)
5600{
5601 switch (format) {
5602 case DRM_FORMAT_YUV410:
5603 case DRM_FORMAT_YVU410:
5604 case DRM_FORMAT_YUV411:
5605 case DRM_FORMAT_YVU411:
5606 case DRM_FORMAT_YUV420:
5607 case DRM_FORMAT_YVU420:
5608 case DRM_FORMAT_YUV422:
5609 case DRM_FORMAT_YVU422:
5610 case DRM_FORMAT_YUV444:
5611 case DRM_FORMAT_YVU444:
5612 return 3;
5613 case DRM_FORMAT_NV12:
5614 case DRM_FORMAT_NV21:
5615 case DRM_FORMAT_NV16:
5616 case DRM_FORMAT_NV61:
ba623f6a
LP		 5617 case DRM_FORMAT_NV24:
5618 case DRM_FORMAT_NV42:
141670e9
VS		 5619 return 2;
5620 default:
5621 return 1;
5622 }
5623}
5624EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 5625
5626/**
5627 * drm_format_plane_cpp - determine the bytes per pixel value
5628 * @format: pixel format (DRM_FORMAT_*)
5629 * @plane: plane index
5630 *
c8e32cc1 5631 * Returns:
5a86bd55
VS		 5632 * The bytes per pixel value for the specified plane.
5633 */
5634int drm_format_plane_cpp(uint32_t format, int plane)
5635{
5636 unsigned int depth;
5637 int bpp;
5638
5639 if (plane >= drm_format_num_planes(format))
5640 return 0;
5641
5642 switch (format) {
5643 case DRM_FORMAT_YUYV:
5644 case DRM_FORMAT_YVYU:
5645 case DRM_FORMAT_UYVY:
5646 case DRM_FORMAT_VYUY:
5647 return 2;
5648 case DRM_FORMAT_NV12:
5649 case DRM_FORMAT_NV21:
5650 case DRM_FORMAT_NV16:
5651 case DRM_FORMAT_NV61:
ba623f6a
LP		 5652 case DRM_FORMAT_NV24:
5653 case DRM_FORMAT_NV42:
5a86bd55
VS		 5654 return plane ? 2 : 1;
5655 case DRM_FORMAT_YUV410:
5656 case DRM_FORMAT_YVU410:
5657 case DRM_FORMAT_YUV411:
5658 case DRM_FORMAT_YVU411:
5659 case DRM_FORMAT_YUV420:
5660 case DRM_FORMAT_YVU420:
5661 case DRM_FORMAT_YUV422:
5662 case DRM_FORMAT_YVU422:
5663 case DRM_FORMAT_YUV444:
5664 case DRM_FORMAT_YVU444:
5665 return 1;
5666 default:
5667 drm_fb_get_bpp_depth(format, &depth, &bpp);
5668 return bpp >> 3;
5669 }
5670}
5671EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 5672
5673/**
5674 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5675 * @format: pixel format (DRM_FORMAT_*)
5676 *
c8e32cc1 5677 * Returns:
01b68b04
VS		 5678 * The horizontal chroma subsampling factor for the
5679 * specified pixel format.
5680 */
5681int drm_format_horz_chroma_subsampling(uint32_t format)
5682{
5683 switch (format) {
5684 case DRM_FORMAT_YUV411:
5685 case DRM_FORMAT_YVU411:
5686 case DRM_FORMAT_YUV410:
5687 case DRM_FORMAT_YVU410:
5688 return 4;
5689 case DRM_FORMAT_YUYV:
5690 case DRM_FORMAT_YVYU:
5691 case DRM_FORMAT_UYVY:
5692 case DRM_FORMAT_VYUY:
5693 case DRM_FORMAT_NV12:
5694 case DRM_FORMAT_NV21:
5695 case DRM_FORMAT_NV16:
5696 case DRM_FORMAT_NV61:
5697 case DRM_FORMAT_YUV422:
5698 case DRM_FORMAT_YVU422:
5699 case DRM_FORMAT_YUV420:
5700 case DRM_FORMAT_YVU420:
5701 return 2;
5702 default:
5703 return 1;
5704 }
5705}
5706EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5707
5708/**
5709 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5710 * @format: pixel format (DRM_FORMAT_*)
5711 *
c8e32cc1 5712 * Returns:
01b68b04
VS		 5713 * The vertical chroma subsampling factor for the
5714 * specified pixel format.
5715 */
5716int drm_format_vert_chroma_subsampling(uint32_t format)
5717{
5718 switch (format) {
5719 case DRM_FORMAT_YUV410:
5720 case DRM_FORMAT_YVU410:
5721 return 4;
5722 case DRM_FORMAT_YUV420:
5723 case DRM_FORMAT_YVU420:
5724 case DRM_FORMAT_NV12:
5725 case DRM_FORMAT_NV21:
5726 return 2;
5727 default:
5728 return 1;
5729 }
5730}
5731EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3 5732
3c9855f6
VS		 5733/**
5734 * drm_rotation_simplify() - Try to simplify the rotation
5735 * @rotation: Rotation to be simplified
5736 * @supported_rotations: Supported rotations
5737 *
5738 * Attempt to simplify the rotation to a form that is supported.
5739 * Eg. if the hardware supports everything except DRM_REFLECT_X
5740 * one could call this function like this:
5741 *
5742 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5743 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5744 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5745 *
5746 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5747 * transforms the hardware supports, this function may not
5748 * be able to produce a supported transform, so the caller should
5749 * check the result afterwards.
5750 */
5751unsigned int drm_rotation_simplify(unsigned int rotation,
5752 unsigned int supported_rotations)
5753{
5754 if (rotation & ~supported_rotations) {
5755 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
14152c8d
JL		 5756 rotation = (rotation & DRM_REFLECT_MASK) |
5757 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
3c9855f6
VS		 5758 }
5759
5760 return rotation;
5761}
5762EXPORT_SYMBOL(drm_rotation_simplify);
5763
87d24fc3
LP		 5764/**
5765 * drm_mode_config_init - initialize DRM mode_configuration structure
5766 * @dev: DRM device
5767 *
5768 * Initialize @dev's mode_config structure, used for tracking the graphics
5769 * configuration of @dev.
5770 *
5771 * Since this initializes the modeset locks, no locking is possible. Which is no
5772 * problem, since this should happen single threaded at init time. It is the
5773 * driver's problem to ensure this guarantee.
5774 *
5775 */
5776void drm_mode_config_init(struct drm_device *dev)
5777{
5778 mutex_init(&dev->mode_config.mutex);
51fd371b 5779 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5780 mutex_init(&dev->mode_config.idr_mutex);
5781 mutex_init(&dev->mode_config.fb_lock);
8fb6e7a5 5782 mutex_init(&dev->mode_config.blob_lock);
87d24fc3
LP		 5783 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5784 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5785 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5786 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5787 INIT_LIST_HEAD(&dev->mode_config.property_list);
5788 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5789 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5790 idr_init(&dev->mode_config.crtc_idr);
138f9ebb 5791 idr_init(&dev->mode_config.tile_idr);
87d24fc3
LP		 5792
5793 drm_modeset_lock_all(dev);
6b4959f4 5794 drm_mode_create_standard_properties(dev);
87d24fc3
LP		 5795 drm_modeset_unlock_all(dev);
5796
5797 /* Just to be sure */
5798 dev->mode_config.num_fb = 0;
5799 dev->mode_config.num_connector = 0;
5800 dev->mode_config.num_crtc = 0;
5801 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 5802 dev->mode_config.num_overlay_plane = 0;
5803 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 5804}
5805EXPORT_SYMBOL(drm_mode_config_init);
5806
5807/**
5808 * drm_mode_config_cleanup - free up DRM mode_config info
5809 * @dev: DRM device
5810 *
5811 * Free up all the connectors and CRTCs associated with this DRM device, then
5812 * free up the framebuffers and associated buffer objects.
5813 *
5814 * Note that since this /should/ happen single-threaded at driver/device
5815 * teardown time, no locking is required. It's the driver's job to ensure that
5816 * this guarantee actually holds true.
5817 *
5818 * FIXME: cleanup any dangling user buffer objects too
5819 */
5820void drm_mode_config_cleanup(struct drm_device *dev)
5821{
5822 struct drm_connector *connector, *ot;
5823 struct drm_crtc *crtc, *ct;
5824 struct drm_encoder *encoder, *enct;
5825 struct drm_framebuffer *fb, *fbt;
5826 struct drm_property *property, *pt;
5827 struct drm_property_blob *blob, *bt;
5828 struct drm_plane *plane, *plt;
5829
5830 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5831 head) {
5832 encoder->funcs->destroy(encoder);
5833 }
5834
5835 list_for_each_entry_safe(connector, ot,
5836 &dev->mode_config.connector_list, head) {
5837 connector->funcs->destroy(connector);
5838 }
5839
5840 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5841 head) {
5842 drm_property_destroy(dev, property);
5843 }
5844
5845 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
e2f5d2ea 5846 head_global) {
6bcacf51 5847 drm_property_unreference_blob(blob);
87d24fc3
LP		 5848 }
5849
5850 /*
5851 * Single-threaded teardown context, so it's not required to grab the
5852 * fb_lock to protect against concurrent fb_list access. Contrary, it
5853 * would actually deadlock with the drm_framebuffer_cleanup function.
5854 *
5855 * Also, if there are any framebuffers left, that's a driver leak now,
5856 * so politely WARN about this.
5857 */
5858 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5859 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
c099b55a 5860 drm_framebuffer_free(&fb->refcount);
87d24fc3
LP		 5861 }
5862
5863 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5864 head) {
5865 plane->funcs->destroy(plane);
5866 }
5867
5868 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5869 crtc->funcs->destroy(crtc);
5870 }
5871
138f9ebb 5872 idr_destroy(&dev->mode_config.tile_idr);
87d24fc3 5873 idr_destroy(&dev->mode_config.crtc_idr);
51fd371b 5874 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5875}
5876EXPORT_SYMBOL(drm_mode_config_cleanup);
c1df5f3c
VS		 5877
5878struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5879 unsigned int supported_rotations)
5880{
5881 static const struct drm_prop_enum_list props[] = {
5882 { DRM_ROTATE_0, "rotate-0" },
5883 { DRM_ROTATE_90, "rotate-90" },
5884 { DRM_ROTATE_180, "rotate-180" },
5885 { DRM_ROTATE_270, "rotate-270" },
5886 { DRM_REFLECT_X, "reflect-x" },
5887 { DRM_REFLECT_Y, "reflect-y" },
5888 };
5889
5890 return drm_property_create_bitmask(dev, 0, "rotation",
5891 props, ARRAY_SIZE(props),
5892 supported_rotations);
5893}
5894EXPORT_SYMBOL(drm_mode_create_rotation_property);
138f9ebb
DA		 5895
5896/**
5897 * DOC: Tile group
5898 *
5899 * Tile groups are used to represent tiled monitors with a unique
5900 * integer identifier. Tiled monitors using DisplayID v1.3 have
5901 * a unique 8-byte handle, we store this in a tile group, so we
5902 * have a common identifier for all tiles in a monitor group.
5903 */
5904static void drm_tile_group_free(struct kref *kref)
5905{
5906 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5907 struct drm_device *dev = tg->dev;
5908 mutex_lock(&dev->mode_config.idr_mutex);
5909 idr_remove(&dev->mode_config.tile_idr, tg->id);
5910 mutex_unlock(&dev->mode_config.idr_mutex);
5911 kfree(tg);
5912}
5913
5914/**
5915 * drm_mode_put_tile_group - drop a reference to a tile group.
5916 * @dev: DRM device
5917 * @tg: tile group to drop reference to.
5918 *
5919 * drop reference to tile group and free if 0.
5920 */
5921void drm_mode_put_tile_group(struct drm_device *dev,
5922 struct drm_tile_group *tg)
5923{
5924 kref_put(&tg->refcount, drm_tile_group_free);
5925}
5926
5927/**
5928 * drm_mode_get_tile_group - get a reference to an existing tile group
5929 * @dev: DRM device
5930 * @topology: 8-bytes unique per monitor.
5931 *
5932 * Use the unique bytes to get a reference to an existing tile group.
5933 *
5934 * RETURNS:
5935 * tile group or NULL if not found.
5936 */
5937struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5938 char topology[8])
5939{
5940 struct drm_tile_group *tg;
5941 int id;
5942 mutex_lock(&dev->mode_config.idr_mutex);
5943 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5944 if (!memcmp(tg->group_data, topology, 8)) {
5945 if (!kref_get_unless_zero(&tg->refcount))
5946 tg = NULL;
5947 mutex_unlock(&dev->mode_config.idr_mutex);
5948 return tg;
5949 }
5950 }
5951 mutex_unlock(&dev->mode_config.idr_mutex);
5952 return NULL;
5953}
81ddd1bc 5954EXPORT_SYMBOL(drm_mode_get_tile_group);
138f9ebb
DA		 5955
5956/**
5957 * drm_mode_create_tile_group - create a tile group from a displayid description
5958 * @dev: DRM device
5959 * @topology: 8-bytes unique per monitor.
5960 *
5961 * Create a tile group for the unique monitor, and get a unique
5962 * identifier for the tile group.
5963 *
5964 * RETURNS:
5965 * new tile group or error.
5966 */
5967struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5968 char topology[8])
5969{
5970 struct drm_tile_group *tg;
5971 int ret;
5972
5973 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5974 if (!tg)
5975 return ERR_PTR(-ENOMEM);
5976
5977 kref_init(&tg->refcount);
5978 memcpy(tg->group_data, topology, 8);
5979 tg->dev = dev;
5980
5981 mutex_lock(&dev->mode_config.idr_mutex);
5982 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5983 if (ret >= 0) {
5984 tg->id = ret;
5985 } else {
5986 kfree(tg);
5987 tg = ERR_PTR(ret);
5988 }
5989
5990 mutex_unlock(&dev->mode_config.idr_mutex);
5991 return tg;
5992}
81ddd1bc 5993EXPORT_SYMBOL(drm_mode_create_tile_group);
Linux kernel - Deliverables
This page took 0.847899 seconds and 5 git commands to generate.