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Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
[deliverable/linux.git] / drivers / gpu / drm / drm_crtc.c
CommitLineData
f453ba04
DA		 1/*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
6ba6d03e 32#include <linux/ctype.h>
f453ba04 33#include <linux/list.h>
5a0e3ad6 34#include <linux/slab.h>
2d1a8a48 35#include <linux/export.h>
760285e7
DH		 36#include <drm/drmP.h>
37#include <drm/drm_crtc.h>
38#include <drm/drm_edid.h>
39#include <drm/drm_fourcc.h>
51fd371b 40#include <drm/drm_modeset_lock.h>
88a48e29 41#include <drm/drm_atomic.h>
f453ba04 42
8bd441b2 43#include "drm_crtc_internal.h"
67d0ec4e 44#include "drm_internal.h"
8bd441b2 45
9a6f5130
CW		 46static struct drm_framebuffer *
47internal_framebuffer_create(struct drm_device *dev,
48 struct drm_mode_fb_cmd2 *r,
49 struct drm_file *file_priv);
c394c2b0 50
f453ba04
DA		 51/* Avoid boilerplate. I'm tired of typing. */
52#define DRM_ENUM_NAME_FN(fnname, list) \
d20d3174 53 const char *fnname(int val) \
f453ba04
DA		 54 { \
55 int i; \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
59 } \
60 return "(unknown)"; \
61 }
62
63/*
64 * Global properties
65 */
4dfd909f
TR		 66static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
67 { DRM_MODE_DPMS_ON, "On" },
f453ba04
DA		 68 { DRM_MODE_DPMS_STANDBY, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
70 { DRM_MODE_DPMS_OFF, "Off" }
71};
72
73DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
74
4dfd909f 75static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
9922ab5a
RC		 76 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
79};
80
f453ba04
DA		 81/*
82 * Optional properties
83 */
4dfd909f 84static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
53bd8389
JB		 85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 89};
90
ff587e45
VK		 91static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
95};
96
f453ba04
DA		 97/*
98 * Non-global properties, but "required" for certain connectors.
99 */
4dfd909f 100static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
f453ba04
DA		 101 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
104};
105
106DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
107
4dfd909f 108static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
f453ba04
DA		 109 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
112};
113
114DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
115 drm_dvi_i_subconnector_enum_list)
116
4dfd909f 117static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
f453ba04
DA		 118 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 123};
124
125DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
126
4dfd909f 127static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
f453ba04
DA		 128 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 132 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 133};
134
135DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
136 drm_tv_subconnector_enum_list)
137
d20d3174 138static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
884840aa
JB		 139 { DRM_MODE_DIRTY_OFF, "Off" },
140 { DRM_MODE_DIRTY_ON, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
142};
143
f453ba04
DA		 144struct drm_conn_prop_enum_list {
145 int type;
d20d3174 146 const char *name;
b21e3afe 147 struct ida ida;
f453ba04
DA		 148};
149
150/*
151 * Connector and encoder types.
152 */
4dfd909f
TR		 153static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
154 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
b21e3afe
IM		 155 { DRM_MODE_CONNECTOR_VGA, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV, "TV" },
168 { DRM_MODE_CONNECTOR_eDP, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
b8923273 170 { DRM_MODE_CONNECTOR_DSI, "DSI" },
f453ba04
DA		 171};
172
4dfd909f
TR		 173static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
174 { DRM_MODE_ENCODER_NONE, "None" },
f453ba04
DA		 175 { DRM_MODE_ENCODER_DAC, "DAC" },
176 { DRM_MODE_ENCODER_TMDS, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 179 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
b8923273 180 { DRM_MODE_ENCODER_DSI, "DSI" },
182407a6 181 { DRM_MODE_ENCODER_DPMST, "DP MST" },
f453ba04
DA		 182};
183
4dfd909f 184static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
ac1bb36c
JB		 185 { SubPixelUnknown, "Unknown" },
186 { SubPixelHorizontalRGB, "Horizontal RGB" },
187 { SubPixelHorizontalBGR, "Horizontal BGR" },
188 { SubPixelVerticalRGB, "Vertical RGB" },
189 { SubPixelVerticalBGR, "Vertical BGR" },
190 { SubPixelNone, "None" },
191};
192
b21e3afe
IM		 193void drm_connector_ida_init(void)
194{
195 int i;
196
197 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
198 ida_init(&drm_connector_enum_list[i].ida);
199}
200
201void drm_connector_ida_destroy(void)
202{
203 int i;
204
205 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
206 ida_destroy(&drm_connector_enum_list[i].ida);
207}
208
c8e32cc1
DV		 209/**
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
212 *
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
215 */
d20d3174 216const char *drm_get_connector_status_name(enum drm_connector_status status)
f453ba04
DA		 217{
218 if (status == connector_status_connected)
219 return "connected";
220 else if (status == connector_status_disconnected)
221 return "disconnected";
222 else
223 return "unknown";
224}
ed7951dc 225EXPORT_SYMBOL(drm_get_connector_status_name);
f453ba04 226
ac1bb36c
JB		 227/**
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
230 *
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
233 */
234const char *drm_get_subpixel_order_name(enum subpixel_order order)
235{
236 return drm_subpixel_enum_list[order].name;
237}
238EXPORT_SYMBOL(drm_get_subpixel_order_name);
239
6ba6d03e
VS		 240static char printable_char(int c)
241{
242 return isascii(c) && isprint(c) ? c : '?';
243}
244
c8e32cc1
DV		 245/**
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
248 *
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
251 *
252 * FIXME: This isn't really multithreading safe.
253 */
d20d3174 254const char *drm_get_format_name(uint32_t format)
6ba6d03e
VS		 255{
256 static char buf[32];
257
258 snprintf(buf, sizeof(buf),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format & 0xff),
261 printable_char((format >> 8) & 0xff),
262 printable_char((format >> 16) & 0xff),
263 printable_char((format >> 24) & 0x7f),
264 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
265 format);
266
267 return buf;
268}
269EXPORT_SYMBOL(drm_get_format_name);
270
2ee39452
DA		 271/*
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
274 */
275static int drm_mode_object_get_reg(struct drm_device *dev,
276 struct drm_mode_object *obj,
277 uint32_t obj_type,
278 bool register_obj)
279{
280 int ret;
281
282 mutex_lock(&dev->mode_config.idr_mutex);
283 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
284 if (ret >= 0) {
285 /*
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
288 */
289 obj->id = ret;
290 obj->type = obj_type;
291 }
292 mutex_unlock(&dev->mode_config.idr_mutex);
293
294 return ret < 0 ? ret : 0;
295}
296
f453ba04 297/**
065a50ed 298 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 299 * @dev: DRM device
065a50ed
DV		 300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
f453ba04 302 *
f453ba04 303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
c8e32cc1
DV		 304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
f453ba04 307 *
c8e32cc1 308 * Returns:
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
f453ba04 652/**
e13161af
MR		 653 * drm_crtc_init_with_planes - Initialise a new CRTC object with
654 * specified primary and cursor planes.
f453ba04
DA		 655 * @dev: DRM device
656 * @crtc: CRTC object to init
e13161af
MR		 657 * @primary: Primary plane for CRTC
658 * @cursor: Cursor plane for CRTC
f453ba04
DA		 659 * @funcs: callbacks for the new CRTC
660 *
ad6f5c34 661 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 662 *
c8e32cc1 663 * Returns:
6bfc56aa 664 * Zero on success, error code on failure.
f453ba04 665 */
e13161af
MR		 666int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
667 struct drm_plane *primary,
fc1d3e44 668 struct drm_plane *cursor,
e13161af 669 const struct drm_crtc_funcs *funcs)
f453ba04 670{
51fd371b 671 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 672 int ret;
673
522cf91f
BG		 674 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
675 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
676
f453ba04
DA		 677 crtc->dev = dev;
678 crtc->funcs = funcs;
679
51fd371b 680 drm_modeset_lock_init(&crtc->mutex);
6bfc56aa
VS		 681 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
682 if (ret)
baf698b0 683 return ret;
f453ba04 684
bffd9de0
PZ		 685 crtc->base.properties = &crtc->properties;
686
51fd371b
RC		 687 list_add_tail(&crtc->head, &config->crtc_list);
688 config->num_crtc++;
6bfc56aa 689
e13161af 690 crtc->primary = primary;
fc1d3e44 691 crtc->cursor = cursor;
e13161af
MR		 692 if (primary)
693 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
fc1d3e44
MR		 694 if (cursor)
695 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
e13161af 696
eab3bbef
DV		 697 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
698 drm_object_attach_property(&crtc->base, config->prop_active, 0);
955f3c33 699 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
eab3bbef
DV		 700 }
701
baf698b0 702 return 0;
f453ba04 703}
e13161af 704EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 705
706/**
ad6f5c34 707 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 708 * @crtc: CRTC to cleanup
709 *
ad6f5c34
VS		 710 * This function cleans up @crtc and removes it from the DRM mode setting
711 * core. Note that the function does *not* free the crtc structure itself,
712 * this is the responsibility of the caller.
f453ba04
DA		 713 */
714void drm_crtc_cleanup(struct drm_crtc *crtc)
715{
716 struct drm_device *dev = crtc->dev;
717
9e1c156f
SK		 718 kfree(crtc->gamma_store);
719 crtc->gamma_store = NULL;
f453ba04 720
51fd371b
RC		 721 drm_modeset_lock_fini(&crtc->mutex);
722
f453ba04
DA		 723 drm_mode_object_put(dev, &crtc->base);
724 list_del(&crtc->head);
725 dev->mode_config.num_crtc--;
3009c037
TR		 726
727 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
728 if (crtc->state && crtc->funcs->atomic_destroy_state)
729 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
a18c0af1
TR		 730
731 memset(crtc, 0, sizeof(*crtc));
f453ba04
DA		 732}
733EXPORT_SYMBOL(drm_crtc_cleanup);
734
db5f7a6e
RK		 735/**
736 * drm_crtc_index - find the index of a registered CRTC
737 * @crtc: CRTC to find index for
738 *
739 * Given a registered CRTC, return the index of that CRTC within a DRM
740 * device's list of CRTCs.
741 */
742unsigned int drm_crtc_index(struct drm_crtc *crtc)
743{
744 unsigned int index = 0;
745 struct drm_crtc *tmp;
746
e4f62546 747 drm_for_each_crtc(tmp, crtc->dev) {
db5f7a6e
RK		 748 if (tmp == crtc)
749 return index;
750
751 index++;
752 }
753
754 BUG();
755}
756EXPORT_SYMBOL(drm_crtc_index);
757
86f422d5 758/*
f453ba04
DA		 759 * drm_mode_remove - remove and free a mode
760 * @connector: connector list to modify
761 * @mode: mode to remove
762 *
f453ba04
DA		 763 * Remove @mode from @connector's mode list, then free it.
764 */
86f422d5
LD		 765static void drm_mode_remove(struct drm_connector *connector,
766 struct drm_display_mode *mode)
f453ba04
DA		 767{
768 list_del(&mode->head);
554f1d78 769 drm_mode_destroy(connector->dev, mode);
f453ba04 770}
f453ba04 771
b5571e9d
BB		 772/**
773 * drm_display_info_set_bus_formats - set the supported bus formats
774 * @info: display info to store bus formats in
e37bfa1a
BB		 775 * @formats: array containing the supported bus formats
776 * @num_formats: the number of entries in the fmts array
b5571e9d
BB		 777 *
778 * Store the supported bus formats in display info structure.
779 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
780 * a full list of available formats.
781 */
782int drm_display_info_set_bus_formats(struct drm_display_info *info,
783 const u32 *formats,
784 unsigned int num_formats)
785{
786 u32 *fmts = NULL;
787
788 if (!formats && num_formats)
789 return -EINVAL;
790
791 if (formats && num_formats) {
792 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
793 GFP_KERNEL);
944579c5 794 if (!fmts)
b5571e9d
BB		 795 return -ENOMEM;
796 }
797
798 kfree(info->bus_formats);
799 info->bus_formats = fmts;
800 info->num_bus_formats = num_formats;
801
802 return 0;
803}
804EXPORT_SYMBOL(drm_display_info_set_bus_formats);
805
eaf99c74
CW		 806/**
807 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
808 * @connector: connector to quwery
eaf99c74
CW		 809 *
810 * The kernel supports per-connector configration of its consoles through
811 * use of the video= parameter. This function parses that option and
812 * extracts the user's specified mode (or enable/disable status) for a
813 * particular connector. This is typically only used during the early fbdev
814 * setup.
815 */
816static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
817{
818 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
819 char *option = NULL;
820
821 if (fb_get_options(connector->name, &option))
822 return;
823
824 if (!drm_mode_parse_command_line_for_connector(option,
825 connector,
826 mode))
827 return;
828
829 if (mode->force) {
830 const char *s;
831
832 switch (mode->force) {
833 case DRM_FORCE_OFF:
834 s = "OFF";
835 break;
836 case DRM_FORCE_ON_DIGITAL:
837 s = "ON - dig";
838 break;
839 default:
840 case DRM_FORCE_ON:
841 s = "ON";
842 break;
843 }
844
845 DRM_INFO("forcing %s connector %s\n", connector->name, s);
846 connector->force = mode->force;
847 }
848
849 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
850 connector->name,
851 mode->xres, mode->yres,
852 mode->refresh_specified ? mode->refresh : 60,
853 mode->rb ? " reduced blanking" : "",
854 mode->margins ? " with margins" : "",
855 mode->interlace ? " interlaced" : "");
856}
857
f453ba04
DA		 858/**
859 * drm_connector_init - Init a preallocated connector
860 * @dev: DRM device
861 * @connector: the connector to init
862 * @funcs: callbacks for this connector
065a50ed 863 * @connector_type: user visible type of the connector
f453ba04 864 *
f453ba04
DA		 865 * Initialises a preallocated connector. Connectors should be
866 * subclassed as part of driver connector objects.
6bfc56aa 867 *
c8e32cc1 868 * Returns:
6bfc56aa 869 * Zero on success, error code on failure.
f453ba04 870 */
6bfc56aa
VS		 871int drm_connector_init(struct drm_device *dev,
872 struct drm_connector *connector,
873 const struct drm_connector_funcs *funcs,
874 int connector_type)
f453ba04 875{
ae16c597 876 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa 877 int ret;
b21e3afe
IM		 878 struct ida *connector_ida =
879 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 880
84849903 881 drm_modeset_lock_all(dev);
f453ba04 882
2ee39452 883 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
6bfc56aa 884 if (ret)
2abdd313 885 goto out_unlock;
6bfc56aa 886
7e3bdf4a 887 connector->base.properties = &connector->properties;
f453ba04
DA		 888 connector->dev = dev;
889 connector->funcs = funcs;
f453ba04
DA		 890 connector->connector_type = connector_type;
891 connector->connector_type_id =
b21e3afe
IM		 892 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
893 if (connector->connector_type_id < 0) {
894 ret = connector->connector_type_id;
2abdd313 895 goto out_put;
b21e3afe 896 }
2abdd313
JN		 897 connector->name =
898 kasprintf(GFP_KERNEL, "%s-%d",
899 drm_connector_enum_list[connector_type].name,
900 connector->connector_type_id);
901 if (!connector->name) {
902 ret = -ENOMEM;
903 goto out_put;
904 }
905
f453ba04
DA		 906 INIT_LIST_HEAD(&connector->probed_modes);
907 INIT_LIST_HEAD(&connector->modes);
908 connector->edid_blob_ptr = NULL;
5e2cb2f6 909 connector->status = connector_status_unknown;
f453ba04 910
eaf99c74
CW		 911 drm_connector_get_cmdline_mode(connector);
912
c7eb76f4
DV		 913 /* We should add connectors at the end to avoid upsetting the connector
914 * index too much. */
ae16c597
RC		 915 list_add_tail(&connector->head, &config->connector_list);
916 config->num_connector++;
f453ba04 917
a7331e5c 918 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 919 drm_object_attach_property(&connector->base,
ae16c597 920 config->edid_property,
a7331e5c 921 0);
f453ba04 922
58495563 923 drm_object_attach_property(&connector->base,
ae16c597
RC		 924 config->dpms_property, 0);
925
926 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
927 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
928 }
f453ba04 929
30f65707
TW		 930 connector->debugfs_entry = NULL;
931
2abdd313
JN		 932out_put:
933 if (ret)
934 drm_mode_object_put(dev, &connector->base);
935
936out_unlock:
84849903 937 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 938
939 return ret;
f453ba04
DA		 940}
941EXPORT_SYMBOL(drm_connector_init);
942
943/**
944 * drm_connector_cleanup - cleans up an initialised connector
945 * @connector: connector to cleanup
946 *
f453ba04
DA		 947 * Cleans up the connector but doesn't free the object.
948 */
949void drm_connector_cleanup(struct drm_connector *connector)
950{
951 struct drm_device *dev = connector->dev;
952 struct drm_display_mode *mode, *t;
953
40d9b043
DA		 954 if (connector->tile_group) {
955 drm_mode_put_tile_group(dev, connector->tile_group);
956 connector->tile_group = NULL;
957 }
958
f453ba04
DA		 959 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
960 drm_mode_remove(connector, mode);
961
962 list_for_each_entry_safe(mode, t, &connector->modes, head)
963 drm_mode_remove(connector, mode);
964
b21e3afe
IM		 965 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
966 connector->connector_type_id);
967
b5571e9d 968 kfree(connector->display_info.bus_formats);
f453ba04 969 drm_mode_object_put(dev, &connector->base);
2abdd313
JN		 970 kfree(connector->name);
971 connector->name = NULL;
f453ba04 972 list_del(&connector->head);
6380c509 973 dev->mode_config.num_connector--;
3009c037
TR		 974
975 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
976 if (connector->state && connector->funcs->atomic_destroy_state)
977 connector->funcs->atomic_destroy_state(connector,
978 connector->state);
a18c0af1
TR		 979
980 memset(connector, 0, sizeof(*connector));
f453ba04
DA		 981}
982EXPORT_SYMBOL(drm_connector_cleanup);
983
10f637bf
DV		 984/**
985 * drm_connector_index - find the index of a registered connector
986 * @connector: connector to find index for
987 *
988 * Given a registered connector, return the index of that connector within a DRM
989 * device's list of connectors.
990 */
991unsigned int drm_connector_index(struct drm_connector *connector)
992{
993 unsigned int index = 0;
994 struct drm_connector *tmp;
c7eb76f4
DV		 995 struct drm_mode_config *config = &connector->dev->mode_config;
996
997 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
10f637bf 998
9a9f5ce8 999 drm_for_each_connector(tmp, connector->dev) {
10f637bf
DV		 1000 if (tmp == connector)
1001 return index;
1002
1003 index++;
1004 }
1005
1006 BUG();
1007}
1008EXPORT_SYMBOL(drm_connector_index);
1009
34ea3d38
TW		 1010/**
1011 * drm_connector_register - register a connector
1012 * @connector: the connector to register
1013 *
1014 * Register userspace interfaces for a connector
1015 *
1016 * Returns:
1017 * Zero on success, error code on failure.
1018 */
1019int drm_connector_register(struct drm_connector *connector)
1020{
30f65707
TW		 1021 int ret;
1022
2ee39452
DA		 1023 drm_mode_object_register(connector->dev, &connector->base);
1024
30f65707
TW		 1025 ret = drm_sysfs_connector_add(connector);
1026 if (ret)
1027 return ret;
1028
1029 ret = drm_debugfs_connector_add(connector);
1030 if (ret) {
1031 drm_sysfs_connector_remove(connector);
1032 return ret;
1033 }
1034
1035 return 0;
34ea3d38
TW		 1036}
1037EXPORT_SYMBOL(drm_connector_register);
1038
1039/**
1040 * drm_connector_unregister - unregister a connector
1041 * @connector: the connector to unregister
1042 *
1043 * Unregister userspace interfaces for a connector
1044 */
1045void drm_connector_unregister(struct drm_connector *connector)
1046{
1047 drm_sysfs_connector_remove(connector);
30f65707 1048 drm_debugfs_connector_remove(connector);
34ea3d38
TW		 1049}
1050EXPORT_SYMBOL(drm_connector_unregister);
1051
1052
c8e32cc1
DV		 1053/**
1054 * drm_connector_unplug_all - unregister connector userspace interfaces
1055 * @dev: drm device
1056 *
1057 * This function unregisters all connector userspace interfaces in sysfs. Should
1058 * be call when the device is disconnected, e.g. from an usb driver's
1059 * ->disconnect callback.
1060 */
cbc7e221
DA		 1061void drm_connector_unplug_all(struct drm_device *dev)
1062{
1063 struct drm_connector *connector;
1064
9a9f5ce8 1065 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
cbc7e221 1066 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
34ea3d38 1067 drm_connector_unregister(connector);
cbc7e221
DA		 1068
1069}
1070EXPORT_SYMBOL(drm_connector_unplug_all);
1071
c8e32cc1
DV		 1072/**
1073 * drm_encoder_init - Init a preallocated encoder
1074 * @dev: drm device
1075 * @encoder: the encoder to init
1076 * @funcs: callbacks for this encoder
1077 * @encoder_type: user visible type of the encoder
1078 *
1079 * Initialises a preallocated encoder. Encoder should be
1080 * subclassed as part of driver encoder objects.
1081 *
1082 * Returns:
1083 * Zero on success, error code on failure.
1084 */
6bfc56aa 1085int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 1086 struct drm_encoder *encoder,
1087 const struct drm_encoder_funcs *funcs,
1088 int encoder_type)
f453ba04 1089{
6bfc56aa
VS		 1090 int ret;
1091
84849903 1092 drm_modeset_lock_all(dev);
f453ba04 1093
6bfc56aa
VS		 1094 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1095 if (ret)
e5748946 1096 goto out_unlock;
f453ba04 1097
6bfc56aa 1098 encoder->dev = dev;
f453ba04
DA		 1099 encoder->encoder_type = encoder_type;
1100 encoder->funcs = funcs;
e5748946
JN		 1101 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1102 drm_encoder_enum_list[encoder_type].name,
1103 encoder->base.id);
1104 if (!encoder->name) {
1105 ret = -ENOMEM;
1106 goto out_put;
1107 }
f453ba04
DA		 1108
1109 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1110 dev->mode_config.num_encoder++;
1111
e5748946
JN		 1112out_put:
1113 if (ret)
1114 drm_mode_object_put(dev, &encoder->base);
1115
1116out_unlock:
84849903 1117 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 1118
1119 return ret;
f453ba04
DA		 1120}
1121EXPORT_SYMBOL(drm_encoder_init);
1122
c8e32cc1
DV		 1123/**
1124 * drm_encoder_cleanup - cleans up an initialised encoder
1125 * @encoder: encoder to cleanup
1126 *
1127 * Cleans up the encoder but doesn't free the object.
1128 */
f453ba04
DA		 1129void drm_encoder_cleanup(struct drm_encoder *encoder)
1130{
1131 struct drm_device *dev = encoder->dev;
4dfd909f 1132
84849903 1133 drm_modeset_lock_all(dev);
f453ba04 1134 drm_mode_object_put(dev, &encoder->base);
e5748946 1135 kfree(encoder->name);
f453ba04 1136 list_del(&encoder->head);
6380c509 1137 dev->mode_config.num_encoder--;
84849903 1138 drm_modeset_unlock_all(dev);
a18c0af1
TR		 1139
1140 memset(encoder, 0, sizeof(*encoder));
f453ba04
DA		 1141}
1142EXPORT_SYMBOL(drm_encoder_cleanup);
1143
35f2c3ae 1144/**
dc415ff9 1145 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1146 * @dev: DRM device
1147 * @plane: plane object to init
1148 * @possible_crtcs: bitmask of possible CRTCs
1149 * @funcs: callbacks for the new plane
1150 * @formats: array of supported formats (%DRM_FORMAT_*)
1151 * @format_count: number of elements in @formats
dc415ff9 1152 * @type: type of plane (overlay, primary, cursor)
35f2c3ae 1153 *
dc415ff9 1154 * Initializes a plane object of type @type.
35f2c3ae 1155 *
c8e32cc1 1156 * Returns:
35f2c3ae
VS		 1157 * Zero on success, error code on failure.
1158 */
dc415ff9
MR		 1159int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1160 unsigned long possible_crtcs,
1161 const struct drm_plane_funcs *funcs,
45e3743a 1162 const uint32_t *formats, unsigned int format_count,
dc415ff9 1163 enum drm_plane_type type)
8cf5c917 1164{
6b4959f4 1165 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 1166 int ret;
1167
6bfc56aa
VS		 1168 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1169 if (ret)
baf698b0 1170 return ret;
6bfc56aa 1171
4d02e2de
DV		 1172 drm_modeset_lock_init(&plane->mutex);
1173
4d93914a 1174 plane->base.properties = &plane->properties;
8cf5c917 1175 plane->dev = dev;
8cf5c917 1176 plane->funcs = funcs;
2f6c5389
TR		 1177 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1178 GFP_KERNEL);
8cf5c917
JB		 1179 if (!plane->format_types) {
1180 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1181 drm_mode_object_put(dev, &plane->base);
baf698b0 1182 return -ENOMEM;
8cf5c917
JB		 1183 }
1184
308e5bcb 1185 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1186 plane->format_count = format_count;
1187 plane->possible_crtcs = possible_crtcs;
dc415ff9 1188 plane->type = type;
8cf5c917 1189
6b4959f4
RC		 1190 list_add_tail(&plane->head, &config->plane_list);
1191 config->num_total_plane++;
dc415ff9 1192 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
6b4959f4 1193 config->num_overlay_plane++;
8cf5c917 1194
9922ab5a 1195 drm_object_attach_property(&plane->base,
6b4959f4 1196 config->plane_type_property,
9922ab5a
RC		 1197 plane->type);
1198
6b4959f4
RC		 1199 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1200 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1201 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1202 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1203 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1204 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1205 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1206 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1207 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1208 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1209 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1210 }
1211
baf698b0 1212 return 0;
8cf5c917 1213}
dc415ff9
MR		 1214EXPORT_SYMBOL(drm_universal_plane_init);
1215
1216/**
1217 * drm_plane_init - Initialize a legacy plane
1218 * @dev: DRM device
1219 * @plane: plane object to init
1220 * @possible_crtcs: bitmask of possible CRTCs
1221 * @funcs: callbacks for the new plane
1222 * @formats: array of supported formats (%DRM_FORMAT_*)
1223 * @format_count: number of elements in @formats
1224 * @is_primary: plane type (primary vs overlay)
1225 *
1226 * Legacy API to initialize a DRM plane.
1227 *
1228 * New drivers should call drm_universal_plane_init() instead.
1229 *
1230 * Returns:
1231 * Zero on success, error code on failure.
1232 */
1233int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1234 unsigned long possible_crtcs,
1235 const struct drm_plane_funcs *funcs,
45e3743a 1236 const uint32_t *formats, unsigned int format_count,
dc415ff9
MR		 1237 bool is_primary)
1238{
1239 enum drm_plane_type type;
1240
1241 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1242 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1243 formats, format_count, type);
1244}
8cf5c917
JB		 1245EXPORT_SYMBOL(drm_plane_init);
1246
35f2c3ae
VS		 1247/**
1248 * drm_plane_cleanup - Clean up the core plane usage
1249 * @plane: plane to cleanup
1250 *
1251 * This function cleans up @plane and removes it from the DRM mode setting
1252 * core. Note that the function does *not* free the plane structure itself,
1253 * this is the responsibility of the caller.
1254 */
8cf5c917
JB		 1255void drm_plane_cleanup(struct drm_plane *plane)
1256{
1257 struct drm_device *dev = plane->dev;
1258
84849903 1259 drm_modeset_lock_all(dev);
8cf5c917
JB		 1260 kfree(plane->format_types);
1261 drm_mode_object_put(dev, &plane->base);
dc415ff9
MR		 1262
1263 BUG_ON(list_empty(&plane->head));
1264
1265 list_del(&plane->head);
1266 dev->mode_config.num_total_plane--;
1267 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1268 dev->mode_config.num_overlay_plane--;
84849903 1269 drm_modeset_unlock_all(dev);
3009c037
TR		 1270
1271 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1272 if (plane->state && plane->funcs->atomic_destroy_state)
1273 plane->funcs->atomic_destroy_state(plane, plane->state);
a18c0af1
TR		 1274
1275 memset(plane, 0, sizeof(*plane));
8cf5c917
JB		 1276}
1277EXPORT_SYMBOL(drm_plane_cleanup);
1278
10f637bf
DV		 1279/**
1280 * drm_plane_index - find the index of a registered plane
1281 * @plane: plane to find index for
1282 *
1283 * Given a registered plane, return the index of that CRTC within a DRM
1284 * device's list of planes.
1285 */
1286unsigned int drm_plane_index(struct drm_plane *plane)
1287{
1288 unsigned int index = 0;
1289 struct drm_plane *tmp;
1290
e4f62546 1291 drm_for_each_plane(tmp, plane->dev) {
10f637bf
DV		 1292 if (tmp == plane)
1293 return index;
1294
1295 index++;
1296 }
1297
1298 BUG();
1299}
1300EXPORT_SYMBOL(drm_plane_index);
1301
f81338a5
CK		 1302/**
1303 * drm_plane_from_index - find the registered plane at an index
1304 * @dev: DRM device
1305 * @idx: index of registered plane to find for
1306 *
1307 * Given a plane index, return the registered plane from DRM device's
1308 * list of planes with matching index.
1309 */
1310struct drm_plane *
1311drm_plane_from_index(struct drm_device *dev, int idx)
1312{
1313 struct drm_plane *plane;
1314 unsigned int i = 0;
1315
6295d607 1316 drm_for_each_plane(plane, dev) {
f81338a5
CK		 1317 if (i == idx)
1318 return plane;
1319 i++;
1320 }
1321 return NULL;
1322}
1323EXPORT_SYMBOL(drm_plane_from_index);
1324
35f2c3ae
VS		 1325/**
1326 * drm_plane_force_disable - Forcibly disable a plane
1327 * @plane: plane to disable
1328 *
1329 * Forces the plane to be disabled.
1330 *
1331 * Used when the plane's current framebuffer is destroyed,
1332 * and when restoring fbdev mode.
1333 */
9125e618
VS		 1334void drm_plane_force_disable(struct drm_plane *plane)
1335{
1336 int ret;
1337
3d30a59b 1338 if (!plane->fb)
9125e618
VS		 1339 return;
1340
3d30a59b 1341 plane->old_fb = plane->fb;
9125e618 1342 ret = plane->funcs->disable_plane(plane);
731cce48 1343 if (ret) {
9125e618 1344 DRM_ERROR("failed to disable plane with busy fb\n");
3d30a59b 1345 plane->old_fb = NULL;
731cce48
DV		 1346 return;
1347 }
9125e618 1348 /* disconnect the plane from the fb and crtc: */
220dd2bc 1349 drm_framebuffer_unreference(plane->old_fb);
3d30a59b 1350 plane->old_fb = NULL;
9125e618
VS		 1351 plane->fb = NULL;
1352 plane->crtc = NULL;
1353}
1354EXPORT_SYMBOL(drm_plane_force_disable);
1355
6b4959f4 1356static int drm_mode_create_standard_properties(struct drm_device *dev)
f453ba04 1357{
356af0e1 1358 struct drm_property *prop;
f453ba04
DA		 1359
1360 /*
1361 * Standard properties (apply to all connectors)
1362 */
356af0e1 1363 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
f453ba04
DA		 1364 DRM_MODE_PROP_IMMUTABLE,
1365 "EDID", 0);
356af0e1
RC		 1366 if (!prop)
1367 return -ENOMEM;
1368 dev->mode_config.edid_property = prop;
f453ba04 1369
356af0e1 1370 prop = drm_property_create_enum(dev, 0,
4a67d391
SH		 1371 "DPMS", drm_dpms_enum_list,
1372 ARRAY_SIZE(drm_dpms_enum_list));
356af0e1
RC		 1373 if (!prop)
1374 return -ENOMEM;
1375 dev->mode_config.dpms_property = prop;
6f134d7b 1376
356af0e1
RC		 1377 prop = drm_property_create(dev,
1378 DRM_MODE_PROP_BLOB |
1379 DRM_MODE_PROP_IMMUTABLE,
1380 "PATH", 0);
1381 if (!prop)
1382 return -ENOMEM;
1383 dev->mode_config.path_property = prop;
f453ba04 1384
356af0e1
RC		 1385 prop = drm_property_create(dev,
1386 DRM_MODE_PROP_BLOB |
1387 DRM_MODE_PROP_IMMUTABLE,
1388 "TILE", 0);
1389 if (!prop)
1390 return -ENOMEM;
1391 dev->mode_config.tile_property = prop;
9922ab5a 1392
6b4959f4 1393 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
9922ab5a
RC		 1394 "type", drm_plane_type_enum_list,
1395 ARRAY_SIZE(drm_plane_type_enum_list));
6b4959f4
RC		 1396 if (!prop)
1397 return -ENOMEM;
1398 dev->mode_config.plane_type_property = prop;
1399
1400 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1401 "SRC_X", 0, UINT_MAX);
1402 if (!prop)
1403 return -ENOMEM;
1404 dev->mode_config.prop_src_x = prop;
1405
1406 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1407 "SRC_Y", 0, UINT_MAX);
1408 if (!prop)
1409 return -ENOMEM;
1410 dev->mode_config.prop_src_y = prop;
1411
1412 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1413 "SRC_W", 0, UINT_MAX);
1414 if (!prop)
1415 return -ENOMEM;
1416 dev->mode_config.prop_src_w = prop;
1417
1418 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1419 "SRC_H", 0, UINT_MAX);
1420 if (!prop)
1421 return -ENOMEM;
1422 dev->mode_config.prop_src_h = prop;
1423
1424 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1425 "CRTC_X", INT_MIN, INT_MAX);
1426 if (!prop)
1427 return -ENOMEM;
1428 dev->mode_config.prop_crtc_x = prop;
1429
1430 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1431 "CRTC_Y", INT_MIN, INT_MAX);
1432 if (!prop)
1433 return -ENOMEM;
1434 dev->mode_config.prop_crtc_y = prop;
1435
1436 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1437 "CRTC_W", 0, INT_MAX);
1438 if (!prop)
1439 return -ENOMEM;
1440 dev->mode_config.prop_crtc_w = prop;
1441
1442 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1443 "CRTC_H", 0, INT_MAX);
1444 if (!prop)
1445 return -ENOMEM;
1446 dev->mode_config.prop_crtc_h = prop;
1447
1448 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1449 "FB_ID", DRM_MODE_OBJECT_FB);
1450 if (!prop)
1451 return -ENOMEM;
1452 dev->mode_config.prop_fb_id = prop;
1453
1454 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1455 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1456 if (!prop)
1457 return -ENOMEM;
1458 dev->mode_config.prop_crtc_id = prop;
9922ab5a 1459
eab3bbef
DV		 1460 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1461 "ACTIVE");
1462 if (!prop)
1463 return -ENOMEM;
1464 dev->mode_config.prop_active = prop;
1465
955f3c33
DS		 1466 prop = drm_property_create(dev,
1467 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1468 "MODE_ID", 0);
1469 if (!prop)
1470 return -ENOMEM;
1471 dev->mode_config.prop_mode_id = prop;
1472
9922ab5a
RC		 1473 return 0;
1474}
1475
f453ba04
DA		 1476/**
1477 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1478 * @dev: DRM device
1479 *
1480 * Called by a driver the first time a DVI-I connector is made.
1481 */
1482int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1483{
1484 struct drm_property *dvi_i_selector;
1485 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1486
1487 if (dev->mode_config.dvi_i_select_subconnector_property)
1488 return 0;
1489
1490 dvi_i_selector =
4a67d391 1491 drm_property_create_enum(dev, 0,
f453ba04 1492 "select subconnector",
4a67d391 1493 drm_dvi_i_select_enum_list,
f453ba04 1494 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1495 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1496
4a67d391 1497 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1498 "subconnector",
4a67d391 1499 drm_dvi_i_subconnector_enum_list,
f453ba04 1500 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1501 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1502
1503 return 0;
1504}
1505EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1506
1507/**
1508 * drm_create_tv_properties - create TV specific connector properties
1509 * @dev: DRM device
1510 * @num_modes: number of different TV formats (modes) supported
1511 * @modes: array of pointers to strings containing name of each format
1512 *
1513 * Called by a driver's TV initialization routine, this function creates
1514 * the TV specific connector properties for a given device. Caller is
1515 * responsible for allocating a list of format names and passing them to
1516 * this routine.
1517 */
2f763312
TR		 1518int drm_mode_create_tv_properties(struct drm_device *dev,
1519 unsigned int num_modes,
b7c914b3 1520 const char * const modes[])
f453ba04
DA		 1521{
1522 struct drm_property *tv_selector;
1523 struct drm_property *tv_subconnector;
2f763312 1524 unsigned int i;
f453ba04
DA		 1525
1526 if (dev->mode_config.tv_select_subconnector_property)
1527 return 0;
1528
1529 /*
1530 * Basic connector properties
1531 */
4a67d391 1532 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1533 "select subconnector",
4a67d391 1534 drm_tv_select_enum_list,
f453ba04 1535 ARRAY_SIZE(drm_tv_select_enum_list));
48aa1e74
IY		 1536 if (!tv_selector)
1537 goto nomem;
1538
f453ba04
DA		 1539 dev->mode_config.tv_select_subconnector_property = tv_selector;
1540
1541 tv_subconnector =
4a67d391
SH		 1542 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1543 "subconnector",
1544 drm_tv_subconnector_enum_list,
f453ba04 1545 ARRAY_SIZE(drm_tv_subconnector_enum_list));
48aa1e74
IY		 1546 if (!tv_subconnector)
1547 goto nomem;
f453ba04
DA		 1548 dev->mode_config.tv_subconnector_property = tv_subconnector;
1549
1550 /*
1551 * Other, TV specific properties: margins & TV modes.
1552 */
1553 dev->mode_config.tv_left_margin_property =
d9bc3c02 1554 drm_property_create_range(dev, 0, "left margin", 0, 100);
48aa1e74
IY		 1555 if (!dev->mode_config.tv_left_margin_property)
1556 goto nomem;
f453ba04
DA		 1557
1558 dev->mode_config.tv_right_margin_property =
d9bc3c02 1559 drm_property_create_range(dev, 0, "right margin", 0, 100);
48aa1e74
IY		 1560 if (!dev->mode_config.tv_right_margin_property)
1561 goto nomem;
f453ba04
DA		 1562
1563 dev->mode_config.tv_top_margin_property =
d9bc3c02 1564 drm_property_create_range(dev, 0, "top margin", 0, 100);
48aa1e74
IY		 1565 if (!dev->mode_config.tv_top_margin_property)
1566 goto nomem;
f453ba04
DA		 1567
1568 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1569 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
48aa1e74
IY		 1570 if (!dev->mode_config.tv_bottom_margin_property)
1571 goto nomem;
f453ba04
DA		 1572
1573 dev->mode_config.tv_mode_property =
1574 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1575 "mode", num_modes);
48aa1e74
IY		 1576 if (!dev->mode_config.tv_mode_property)
1577 goto nomem;
1578
f453ba04
DA		 1579 for (i = 0; i < num_modes; i++)
1580 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1581 i, modes[i]);
1582
b6b7902e 1583 dev->mode_config.tv_brightness_property =
d9bc3c02 1584 drm_property_create_range(dev, 0, "brightness", 0, 100);
48aa1e74
IY		 1585 if (!dev->mode_config.tv_brightness_property)
1586 goto nomem;
b6b7902e
FJ		 1587
1588 dev->mode_config.tv_contrast_property =
d9bc3c02 1589 drm_property_create_range(dev, 0, "contrast", 0, 100);
48aa1e74
IY		 1590 if (!dev->mode_config.tv_contrast_property)
1591 goto nomem;
b6b7902e
FJ		 1592
1593 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1594 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
48aa1e74
IY		 1595 if (!dev->mode_config.tv_flicker_reduction_property)
1596 goto nomem;
b6b7902e 1597
a75f0236 1598 dev->mode_config.tv_overscan_property =
d9bc3c02 1599 drm_property_create_range(dev, 0, "overscan", 0, 100);
48aa1e74
IY		 1600 if (!dev->mode_config.tv_overscan_property)
1601 goto nomem;
a75f0236
FJ		 1602
1603 dev->mode_config.tv_saturation_property =
d9bc3c02 1604 drm_property_create_range(dev, 0, "saturation", 0, 100);
48aa1e74
IY		 1605 if (!dev->mode_config.tv_saturation_property)
1606 goto nomem;
a75f0236
FJ		 1607
1608 dev->mode_config.tv_hue_property =
d9bc3c02 1609 drm_property_create_range(dev, 0, "hue", 0, 100);
48aa1e74
IY		 1610 if (!dev->mode_config.tv_hue_property)
1611 goto nomem;
a75f0236 1612
f453ba04 1613 return 0;
48aa1e74
IY		 1614nomem:
1615 return -ENOMEM;
f453ba04
DA		 1616}
1617EXPORT_SYMBOL(drm_mode_create_tv_properties);
1618
1619/**
1620 * drm_mode_create_scaling_mode_property - create scaling mode property
1621 * @dev: DRM device
1622 *
1623 * Called by a driver the first time it's needed, must be attached to desired
1624 * connectors.
1625 */
1626int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1627{
1628 struct drm_property *scaling_mode;
f453ba04
DA		 1629
1630 if (dev->mode_config.scaling_mode_property)
1631 return 0;
1632
1633 scaling_mode =
4a67d391
SH		 1634 drm_property_create_enum(dev, 0, "scaling mode",
1635 drm_scaling_mode_enum_list,
f453ba04 1636 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1637
1638 dev->mode_config.scaling_mode_property = scaling_mode;
1639
1640 return 0;
1641}
1642EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1643
ff587e45
VK		 1644/**
1645 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1646 * @dev: DRM device
1647 *
1648 * Called by a driver the first time it's needed, must be attached to desired
1649 * connectors.
1650 *
1651 * Returns:
1a498633 1652 * Zero on success, negative errno on failure.
ff587e45
VK		 1653 */
1654int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1655{
1656 if (dev->mode_config.aspect_ratio_property)
1657 return 0;
1658
1659 dev->mode_config.aspect_ratio_property =
1660 drm_property_create_enum(dev, 0, "aspect ratio",
1661 drm_aspect_ratio_enum_list,
1662 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1663
1664 if (dev->mode_config.aspect_ratio_property == NULL)
1665 return -ENOMEM;
1666
1667 return 0;
1668}
1669EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1670
884840aa
JB		 1671/**
1672 * drm_mode_create_dirty_property - create dirty property
1673 * @dev: DRM device
1674 *
1675 * Called by a driver the first time it's needed, must be attached to desired
1676 * connectors.
1677 */
1678int drm_mode_create_dirty_info_property(struct drm_device *dev)
1679{
1680 struct drm_property *dirty_info;
884840aa
JB		 1681
1682 if (dev->mode_config.dirty_info_property)
1683 return 0;
1684
1685 dirty_info =
4a67d391 1686 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1687 "dirty",
4a67d391 1688 drm_dirty_info_enum_list,
884840aa 1689 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1690 dev->mode_config.dirty_info_property = dirty_info;
1691
1692 return 0;
1693}
1694EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1695
5bb2bbf5
DA		 1696/**
1697 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1698 * @dev: DRM device
1699 *
1700 * Create the the suggested x/y offset property for connectors.
1701 */
1702int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1703{
1704 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1705 return 0;
1706
1707 dev->mode_config.suggested_x_property =
1708 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1709
1710 dev->mode_config.suggested_y_property =
1711 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1712
1713 if (dev->mode_config.suggested_x_property == NULL ||
1714 dev->mode_config.suggested_y_property == NULL)
1715 return -ENOMEM;
1716 return 0;
1717}
1718EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1719
f453ba04
DA		 1720/**
1721 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1722 * @dev: drm device for the ioctl
1723 * @data: data pointer for the ioctl
1724 * @file_priv: drm file for the ioctl call
f453ba04 1725 *
f453ba04
DA		 1726 * Construct a set of configuration description structures and return
1727 * them to the user, including CRTC, connector and framebuffer configuration.
1728 *
1729 * Called by the user via ioctl.
1730 *
c8e32cc1 1731 * Returns:
1a498633 1732 * Zero on success, negative errno on failure.
f453ba04
DA		 1733 */
1734int drm_mode_getresources(struct drm_device *dev, void *data,
1735 struct drm_file *file_priv)
1736{
1737 struct drm_mode_card_res *card_res = data;
1738 struct list_head *lh;
1739 struct drm_framebuffer *fb;
1740 struct drm_connector *connector;
1741 struct drm_crtc *crtc;
1742 struct drm_encoder *encoder;
1743 int ret = 0;
1744 int connector_count = 0;
1745 int crtc_count = 0;
1746 int fb_count = 0;
1747 int encoder_count = 0;
9c7060f7 1748 int copied = 0;
f453ba04
DA		 1749 uint32_t __user *fb_id;
1750 uint32_t __user *crtc_id;
1751 uint32_t __user *connector_id;
1752 uint32_t __user *encoder_id;
f453ba04 1753
fb3b06c8
DA		 1754 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1755 return -EINVAL;
1756
f453ba04 1757
4b096ac1 1758 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1759 /*
1760 * For the non-control nodes we need to limit the list of resources
1761 * by IDs in the group list for this node
1762 */
1763 list_for_each(lh, &file_priv->fbs)
1764 fb_count++;
1765
4b096ac1
DV		 1766 /* handle this in 4 parts */
1767 /* FBs */
1768 if (card_res->count_fbs >= fb_count) {
1769 copied = 0;
1770 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1771 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1772 if (put_user(fb->base.id, fb_id + copied)) {
1773 mutex_unlock(&file_priv->fbs_lock);
1774 return -EFAULT;
1775 }
1776 copied++;
1777 }
1778 }
1779 card_res->count_fbs = fb_count;
1780 mutex_unlock(&file_priv->fbs_lock);
1781
fcf93f69
DV		 1782 /* mode_config.mutex protects the connector list against e.g. DP MST
1783 * connector hot-adding. CRTC/Plane lists are invariant. */
1784 mutex_lock(&dev->mode_config.mutex);
9c7060f7
DV		 1785 drm_for_each_crtc(crtc, dev)
1786 crtc_count++;
f453ba04 1787
9c7060f7
DV		 1788 drm_for_each_connector(connector, dev)
1789 connector_count++;
f453ba04 1790
9c7060f7
DV		 1791 drm_for_each_encoder(encoder, dev)
1792 encoder_count++;
f453ba04
DA		 1793
1794 card_res->max_height = dev->mode_config.max_height;
1795 card_res->min_height = dev->mode_config.min_height;
1796 card_res->max_width = dev->mode_config.max_width;
1797 card_res->min_width = dev->mode_config.min_width;
1798
f453ba04
DA		 1799 /* CRTCs */
1800 if (card_res->count_crtcs >= crtc_count) {
1801 copied = 0;
1802 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
9c7060f7
DV		 1803 drm_for_each_crtc(crtc, dev) {
1804 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1805 if (put_user(crtc->base.id, crtc_id + copied)) {
1806 ret = -EFAULT;
1807 goto out;
f453ba04 1808 }
9c7060f7 1809 copied++;
f453ba04
DA		 1810 }
1811 }
1812 card_res->count_crtcs = crtc_count;
1813
1814 /* Encoders */
1815 if (card_res->count_encoders >= encoder_count) {
1816 copied = 0;
1817 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
9c7060f7
DV		 1818 drm_for_each_encoder(encoder, dev) {
1819 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1820 encoder->name);
1821 if (put_user(encoder->base.id, encoder_id +
1822 copied)) {
1823 ret = -EFAULT;
1824 goto out;
f453ba04 1825 }
9c7060f7 1826 copied++;
f453ba04
DA		 1827 }
1828 }
1829 card_res->count_encoders = encoder_count;
1830
1831 /* Connectors */
1832 if (card_res->count_connectors >= connector_count) {
1833 copied = 0;
1834 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
9c7060f7
DV		 1835 drm_for_each_connector(connector, dev) {
1836 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1837 connector->base.id,
1838 connector->name);
1839 if (put_user(connector->base.id,
1840 connector_id + copied)) {
1841 ret = -EFAULT;
1842 goto out;
f453ba04 1843 }
9c7060f7 1844 copied++;
f453ba04
DA		 1845 }
1846 }
1847 card_res->count_connectors = connector_count;
1848
9440106b 1849 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1850 card_res->count_connectors, card_res->count_encoders);
1851
1852out:
fcf93f69 1853 mutex_unlock(&dev->mode_config.mutex);
f453ba04
DA		 1854 return ret;
1855}
1856
1857/**
1858 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1859 * @dev: drm device for the ioctl
1860 * @data: data pointer for the ioctl
1861 * @file_priv: drm file for the ioctl call
f453ba04 1862 *
f453ba04
DA		 1863 * Construct a CRTC configuration structure to return to the user.
1864 *
1865 * Called by the user via ioctl.
1866 *
c8e32cc1 1867 * Returns:
1a498633 1868 * Zero on success, negative errno on failure.
f453ba04
DA		 1869 */
1870int drm_mode_getcrtc(struct drm_device *dev,
1871 void *data, struct drm_file *file_priv)
1872{
1873 struct drm_mode_crtc *crtc_resp = data;
1874 struct drm_crtc *crtc;
f453ba04 1875
fb3b06c8
DA		 1876 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1877 return -EINVAL;
1878
a2b34e22 1879 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
fcf93f69
DV		 1880 if (!crtc)
1881 return -ENOENT;
f453ba04 1882
fcf93f69 1883 drm_modeset_lock_crtc(crtc, crtc->primary);
f453ba04 1884 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 1885 if (crtc->primary->fb)
1886 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 1887 else
1888 crtc_resp->fb_id = 0;
1889
31c946e8
DV		 1890 if (crtc->state) {
1891 crtc_resp->x = crtc->primary->state->src_x >> 16;
1892 crtc_resp->y = crtc->primary->state->src_y >> 16;
1893 if (crtc->state->enable) {
934a8a89 1894 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
31c946e8 1895 crtc_resp->mode_valid = 1;
f453ba04 1896
31c946e8
DV		 1897 } else {
1898 crtc_resp->mode_valid = 0;
1899 }
f453ba04 1900 } else {
31c946e8
DV		 1901 crtc_resp->x = crtc->x;
1902 crtc_resp->y = crtc->y;
1903 if (crtc->enabled) {
934a8a89 1904 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
31c946e8
DV		 1905 crtc_resp->mode_valid = 1;
1906
1907 } else {
1908 crtc_resp->mode_valid = 0;
1909 }
f453ba04 1910 }
fcf93f69 1911 drm_modeset_unlock_crtc(crtc);
f453ba04 1912
baf698b0 1913 return 0;
f453ba04
DA		 1914}
1915
61d8e328
DL		 1916static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1917 const struct drm_file *file_priv)
1918{
1919 /*
1920 * If user-space hasn't configured the driver to expose the stereo 3D
1921 * modes, don't expose them.
1922 */
1923 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1924 return false;
1925
1926 return true;
1927}
1928
abd69c55
DV		 1929static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
1930{
1931 /* For atomic drivers only state objects are synchronously updated and
1932 * protected by modeset locks, so check those first. */
1933 if (connector->state)
1934 return connector->state->best_encoder;
1935 return connector->encoder;
1936}
1937
95cbf110 1938/* helper for getconnector and getproperties ioctls */
88a48e29 1939static int get_properties(struct drm_mode_object *obj, bool atomic,
95cbf110
RC		 1940 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
1941 uint32_t *arg_count_props)
1942{
88a48e29
RC		 1943 int props_count;
1944 int i, ret, copied;
1945
1946 props_count = obj->properties->count;
1947 if (!atomic)
1948 props_count -= obj->properties->atomic_count;
95cbf110
RC		 1949
1950 if ((*arg_count_props >= props_count) && props_count) {
88a48e29 1951 for (i = 0, copied = 0; copied < props_count; i++) {
95cbf110
RC		 1952 struct drm_property *prop = obj->properties->properties[i];
1953 uint64_t val;
1954
88a48e29
RC		 1955 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
1956 continue;
1957
95cbf110
RC		 1958 ret = drm_object_property_get_value(obj, prop, &val);
1959 if (ret)
1960 return ret;
1961
1962 if (put_user(prop->base.id, prop_ptr + copied))
1963 return -EFAULT;
1964
1965 if (put_user(val, prop_values + copied))
1966 return -EFAULT;
1967
1968 copied++;
1969 }
1970 }
1971 *arg_count_props = props_count;
1972
1973 return 0;
1974}
1975
f453ba04
DA		 1976/**
1977 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 1978 * @dev: drm device for the ioctl
1979 * @data: data pointer for the ioctl
1980 * @file_priv: drm file for the ioctl call
f453ba04 1981 *
f453ba04
DA		 1982 * Construct a connector configuration structure to return to the user.
1983 *
1984 * Called by the user via ioctl.
1985 *
c8e32cc1 1986 * Returns:
1a498633 1987 * Zero on success, negative errno on failure.
f453ba04
DA		 1988 */
1989int drm_mode_getconnector(struct drm_device *dev, void *data,
1990 struct drm_file *file_priv)
1991{
1992 struct drm_mode_get_connector *out_resp = data;
f453ba04 1993 struct drm_connector *connector;
abd69c55 1994 struct drm_encoder *encoder;
f453ba04
DA		 1995 struct drm_display_mode *mode;
1996 int mode_count = 0;
f453ba04
DA		 1997 int encoders_count = 0;
1998 int ret = 0;
1999 int copied = 0;
2000 int i;
2001 struct drm_mode_modeinfo u_mode;
2002 struct drm_mode_modeinfo __user *mode_ptr;
f453ba04
DA		 2003 uint32_t __user *encoder_ptr;
2004
fb3b06c8
DA		 2005 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2006 return -EINVAL;
2007
f453ba04
DA		 2008 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2009
9440106b 2010 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 2011
7b24056b 2012 mutex_lock(&dev->mode_config.mutex);
f453ba04 2013
a2b34e22
RC		 2014 connector = drm_connector_find(dev, out_resp->connector_id);
2015 if (!connector) {
f27657f2 2016 ret = -ENOENT;
04bdf441 2017 goto out_unlock;
f453ba04 2018 }
f453ba04 2019
01073b08
TR		 2020 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2021 if (connector->encoder_ids[i] != 0)
f453ba04 2022 encoders_count++;
f453ba04
DA		 2023
2024 if (out_resp->count_modes == 0) {
2025 connector->funcs->fill_modes(connector,
2026 dev->mode_config.max_width,
2027 dev->mode_config.max_height);
2028 }
2029
2030 /* delayed so we get modes regardless of pre-fill_modes state */
2031 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 2032 if (drm_mode_expose_to_userspace(mode, file_priv))
2033 mode_count++;
f453ba04
DA		 2034
2035 out_resp->connector_id = connector->base.id;
2036 out_resp->connector_type = connector->connector_type;
2037 out_resp->connector_type_id = connector->connector_type_id;
2038 out_resp->mm_width = connector->display_info.width_mm;
2039 out_resp->mm_height = connector->display_info.height_mm;
2040 out_resp->subpixel = connector->display_info.subpixel_order;
2041 out_resp->connection = connector->status;
2caa80e7
DV		 2042
2043 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2044 encoder = drm_connector_get_encoder(connector);
2045 if (encoder)
2046 out_resp->encoder_id = encoder->base.id;
f453ba04
DA		 2047 else
2048 out_resp->encoder_id = 0;
2049
2050 /*
2051 * This ioctl is called twice, once to determine how much space is
2052 * needed, and the 2nd time to fill it.
2053 */
2054 if ((out_resp->count_modes >= mode_count) && mode_count) {
2055 copied = 0;
81f6c7f8 2056 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 2057 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 2058 if (!drm_mode_expose_to_userspace(mode, file_priv))
2059 continue;
2060
934a8a89 2061 drm_mode_convert_to_umode(&u_mode, mode);
f453ba04
DA		 2062 if (copy_to_user(mode_ptr + copied,
2063 &u_mode, sizeof(u_mode))) {
2064 ret = -EFAULT;
2065 goto out;
2066 }
2067 copied++;
2068 }
2069 }
2070 out_resp->count_modes = mode_count;
2071
88a48e29 2072 ret = get_properties(&connector->base, file_priv->atomic,
95cbf110
RC		 2073 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2074 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2075 &out_resp->count_props);
2076 if (ret)
2077 goto out;
f453ba04
DA		 2078
2079 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2080 copied = 0;
81f6c7f8 2081 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 2082 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2083 if (connector->encoder_ids[i] != 0) {
2084 if (put_user(connector->encoder_ids[i],
2085 encoder_ptr + copied)) {
2086 ret = -EFAULT;
2087 goto out;
2088 }
2089 copied++;
2090 }
2091 }
2092 }
2093 out_resp->count_encoders = encoders_count;
2094
2095out:
ccfc0865 2096 drm_modeset_unlock(&dev->mode_config.connection_mutex);
04bdf441
TR		 2097
2098out_unlock:
7b24056b
DV		 2099 mutex_unlock(&dev->mode_config.mutex);
2100
f453ba04
DA		 2101 return ret;
2102}
2103
abd69c55
DV		 2104static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2105{
2106 struct drm_connector *connector;
2107 struct drm_device *dev = encoder->dev;
2108 bool uses_atomic = false;
2109
2110 /* For atomic drivers only state objects are synchronously updated and
2111 * protected by modeset locks, so check those first. */
6295d607 2112 drm_for_each_connector(connector, dev) {
abd69c55
DV		 2113 if (!connector->state)
2114 continue;
2115
2116 uses_atomic = true;
2117
2118 if (connector->state->best_encoder != encoder)
2119 continue;
2120
2121 return connector->state->crtc;
2122 }
2123
2124 /* Don't return stale data (e.g. pending async disable). */
2125 if (uses_atomic)
2126 return NULL;
2127
2128 return encoder->crtc;
2129}
2130
c8e32cc1
DV		 2131/**
2132 * drm_mode_getencoder - get encoder configuration
2133 * @dev: drm device for the ioctl
2134 * @data: data pointer for the ioctl
2135 * @file_priv: drm file for the ioctl call
2136 *
2137 * Construct a encoder configuration structure to return to the user.
2138 *
2139 * Called by the user via ioctl.
2140 *
2141 * Returns:
1a498633 2142 * Zero on success, negative errno on failure.
c8e32cc1 2143 */
f453ba04
DA		 2144int drm_mode_getencoder(struct drm_device *dev, void *data,
2145 struct drm_file *file_priv)
2146{
2147 struct drm_mode_get_encoder *enc_resp = data;
f453ba04 2148 struct drm_encoder *encoder;
abd69c55 2149 struct drm_crtc *crtc;
f453ba04 2150
fb3b06c8
DA		 2151 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2152 return -EINVAL;
2153
a2b34e22 2154 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
fcf93f69
DV		 2155 if (!encoder)
2156 return -ENOENT;
f453ba04 2157
fcf93f69 2158 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2159 crtc = drm_encoder_get_crtc(encoder);
2160 if (crtc)
2161 enc_resp->crtc_id = crtc->base.id;
f453ba04
DA		 2162 else
2163 enc_resp->crtc_id = 0;
fcf93f69
DV		 2164 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2165
f453ba04
DA		 2166 enc_resp->encoder_type = encoder->encoder_type;
2167 enc_resp->encoder_id = encoder->base.id;
2168 enc_resp->possible_crtcs = encoder->possible_crtcs;
2169 enc_resp->possible_clones = encoder->possible_clones;
2170
baf698b0 2171 return 0;
f453ba04
DA		 2172}
2173
8cf5c917 2174/**
c8e32cc1 2175 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 2176 * @dev: DRM device
2177 * @data: ioctl data
2178 * @file_priv: DRM file info
2179 *
c8e32cc1
DV		 2180 * Construct a list of plane ids to return to the user.
2181 *
2182 * Called by the user via ioctl.
2183 *
2184 * Returns:
1a498633 2185 * Zero on success, negative errno on failure.
8cf5c917
JB		 2186 */
2187int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 2188 struct drm_file *file_priv)
8cf5c917
JB		 2189{
2190 struct drm_mode_get_plane_res *plane_resp = data;
2191 struct drm_mode_config *config;
2192 struct drm_plane *plane;
2193 uint32_t __user *plane_ptr;
fcf93f69 2194 int copied = 0;
681e7ec7 2195 unsigned num_planes;
8cf5c917
JB		 2196
2197 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2198 return -EINVAL;
2199
8cf5c917
JB		 2200 config = &dev->mode_config;
2201
681e7ec7
MR		 2202 if (file_priv->universal_planes)
2203 num_planes = config->num_total_plane;
2204 else
2205 num_planes = config->num_overlay_plane;
2206
8cf5c917
JB		 2207 /*
2208 * This ioctl is called twice, once to determine how much space is
2209 * needed, and the 2nd time to fill it.
2210 */
681e7ec7
MR		 2211 if (num_planes &&
2212 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 2213 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917 2214
fcf93f69 2215 /* Plane lists are invariant, no locking needed. */
e4f62546 2216 drm_for_each_plane(plane, dev) {
681e7ec7
MR		 2217 /*
2218 * Unless userspace set the 'universal planes'
2219 * capability bit, only advertise overlays.
2220 */
2221 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2222 !file_priv->universal_planes)
e27dde3e
MR		 2223 continue;
2224
fcf93f69
DV		 2225 if (put_user(plane->base.id, plane_ptr + copied))
2226 return -EFAULT;
8cf5c917
JB		 2227 copied++;
2228 }
2229 }
681e7ec7 2230 plane_resp->count_planes = num_planes;
8cf5c917 2231
fcf93f69 2232 return 0;
8cf5c917
JB		 2233}
2234
2235/**
c8e32cc1 2236 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2237 * @dev: DRM device
2238 * @data: ioctl data
2239 * @file_priv: DRM file info
2240 *
c8e32cc1
DV		 2241 * Construct a plane configuration structure to return to the user.
2242 *
2243 * Called by the user via ioctl.
2244 *
2245 * Returns:
1a498633 2246 * Zero on success, negative errno on failure.
8cf5c917
JB		 2247 */
2248int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2249 struct drm_file *file_priv)
8cf5c917
JB		 2250{
2251 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2252 struct drm_plane *plane;
2253 uint32_t __user *format_ptr;
8cf5c917
JB		 2254
2255 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2256 return -EINVAL;
2257
a2b34e22 2258 plane = drm_plane_find(dev, plane_resp->plane_id);
fcf93f69
DV		 2259 if (!plane)
2260 return -ENOENT;
8cf5c917 2261
fcf93f69 2262 drm_modeset_lock(&plane->mutex, NULL);
8cf5c917
JB		 2263 if (plane->crtc)
2264 plane_resp->crtc_id = plane->crtc->base.id;
2265 else
2266 plane_resp->crtc_id = 0;
2267
2268 if (plane->fb)
2269 plane_resp->fb_id = plane->fb->base.id;
2270 else
2271 plane_resp->fb_id = 0;
fcf93f69 2272 drm_modeset_unlock(&plane->mutex);
8cf5c917
JB		 2273
2274 plane_resp->plane_id = plane->base.id;
2275 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2276 plane_resp->gamma_size = 0;
8cf5c917
JB		 2277
2278 /*
2279 * This ioctl is called twice, once to determine how much space is
2280 * needed, and the 2nd time to fill it.
2281 */
2282 if (plane->format_count &&
2283 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2284 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2285 if (copy_to_user(format_ptr,
2286 plane->format_types,
2287 sizeof(uint32_t) * plane->format_count)) {
fcf93f69 2288 return -EFAULT;
8cf5c917
JB		 2289 }
2290 }
2291 plane_resp->count_format_types = plane->format_count;
2292
baf698b0 2293 return 0;
8cf5c917
JB		 2294}
2295
ead8610d
LP		 2296/**
2297 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2298 * @plane: plane to check for format support
2299 * @format: the pixel format
2300 *
2301 * Returns:
2302 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2303 * otherwise.
2304 */
2305int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2306{
2307 unsigned int i;
2308
2309 for (i = 0; i < plane->format_count; i++) {
2310 if (format == plane->format_types[i])
2311 return 0;
2312 }
2313
2314 return -EINVAL;
2315}
2316
ce8d9ecc
VS		 2317static int check_src_coords(uint32_t src_x, uint32_t src_y,
2318 uint32_t src_w, uint32_t src_h,
2319 const struct drm_framebuffer *fb)
2320{
2321 unsigned int fb_width, fb_height;
2322
2323 fb_width = fb->width << 16;
2324 fb_height = fb->height << 16;
2325
2326 /* Make sure source coordinates are inside the fb. */
2327 if (src_w > fb_width ||
2328 src_x > fb_width - src_w ||
2329 src_h > fb_height ||
2330 src_y > fb_height - src_h) {
2331 DRM_DEBUG_KMS("Invalid source coordinates "
2332 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2333 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2334 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2335 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2336 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2337 return -ENOSPC;
2338 }
2339
2340 return 0;
2341}
2342
b36552b3
MR		 2343/*
2344 * setplane_internal - setplane handler for internal callers
8cf5c917 2345 *
b36552b3
MR		 2346 * Note that we assume an extra reference has already been taken on fb. If the
2347 * update fails, this reference will be dropped before return; if it succeeds,
2348 * the previous framebuffer (if any) will be unreferenced instead.
c8e32cc1 2349 *
b36552b3 2350 * src_{x,y,w,h} are provided in 16.16 fixed point format
8cf5c917 2351 */
f2b50c11
DV		 2352static int __setplane_internal(struct drm_plane *plane,
2353 struct drm_crtc *crtc,
2354 struct drm_framebuffer *fb,
2355 int32_t crtc_x, int32_t crtc_y,
2356 uint32_t crtc_w, uint32_t crtc_h,
2357 /* src_{x,y,w,h} values are 16.16 fixed point */
2358 uint32_t src_x, uint32_t src_y,
2359 uint32_t src_w, uint32_t src_h)
8cf5c917 2360{
8cf5c917
JB		 2361 int ret = 0;
2362
8cf5c917 2363 /* No fb means shut it down */
b36552b3 2364 if (!fb) {
3d30a59b 2365 plane->old_fb = plane->fb;
731cce48
DV		 2366 ret = plane->funcs->disable_plane(plane);
2367 if (!ret) {
2368 plane->crtc = NULL;
2369 plane->fb = NULL;
2370 } else {
3d30a59b 2371 plane->old_fb = NULL;
731cce48 2372 }
8cf5c917
JB		 2373 goto out;
2374 }
2375
7f994f3f
MR		 2376 /* Check whether this plane is usable on this CRTC */
2377 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2378 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2379 ret = -EINVAL;
2380 goto out;
2381 }
2382
62443be6 2383 /* Check whether this plane supports the fb pixel format. */
ead8610d
LP		 2384 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2385 if (ret) {
6ba6d03e
VS		 2386 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2387 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2388 goto out;
2389 }
2390
3968be94
MR		 2391 /* Give drivers some help against integer overflows */
2392 if (crtc_w > INT_MAX ||
2393 crtc_x > INT_MAX - (int32_t) crtc_w ||
2394 crtc_h > INT_MAX ||
2395 crtc_y > INT_MAX - (int32_t) crtc_h) {
2396 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2397 crtc_w, crtc_h, crtc_x, crtc_y);
c390eed0
VS		 2398 ret = -ERANGE;
2399 goto out;
3968be94
MR		 2400 }
2401
ce8d9ecc
VS		 2402 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2403 if (ret)
42ef8789 2404 goto out;
42ef8789 2405
3d30a59b 2406 plane->old_fb = plane->fb;
8cf5c917 2407 ret = plane->funcs->update_plane(plane, crtc, fb,
b36552b3
MR		 2408 crtc_x, crtc_y, crtc_w, crtc_h,
2409 src_x, src_y, src_w, src_h);
8cf5c917
JB		 2410 if (!ret) {
2411 plane->crtc = crtc;
2412 plane->fb = fb;
35f8badc 2413 fb = NULL;
0fe27f06 2414 } else {
3d30a59b 2415 plane->old_fb = NULL;
8cf5c917
JB		 2416 }
2417
2418out:
6c2a7532
DV		 2419 if (fb)
2420 drm_framebuffer_unreference(fb);
3d30a59b
DV		 2421 if (plane->old_fb)
2422 drm_framebuffer_unreference(plane->old_fb);
2423 plane->old_fb = NULL;
8cf5c917
JB		 2424
2425 return ret;
f2b50c11 2426}
b36552b3 2427
f2b50c11
DV		 2428static int setplane_internal(struct drm_plane *plane,
2429 struct drm_crtc *crtc,
2430 struct drm_framebuffer *fb,
2431 int32_t crtc_x, int32_t crtc_y,
2432 uint32_t crtc_w, uint32_t crtc_h,
2433 /* src_{x,y,w,h} values are 16.16 fixed point */
2434 uint32_t src_x, uint32_t src_y,
2435 uint32_t src_w, uint32_t src_h)
2436{
2437 int ret;
2438
2439 drm_modeset_lock_all(plane->dev);
2440 ret = __setplane_internal(plane, crtc, fb,
2441 crtc_x, crtc_y, crtc_w, crtc_h,
2442 src_x, src_y, src_w, src_h);
2443 drm_modeset_unlock_all(plane->dev);
2444
2445 return ret;
b36552b3
MR		 2446}
2447
2448/**
2449 * drm_mode_setplane - configure a plane's configuration
2450 * @dev: DRM device
2451 * @data: ioctl data*
2452 * @file_priv: DRM file info
2453 *
2454 * Set plane configuration, including placement, fb, scaling, and other factors.
2455 * Or pass a NULL fb to disable (planes may be disabled without providing a
2456 * valid crtc).
2457 *
2458 * Returns:
1a498633 2459 * Zero on success, negative errno on failure.
b36552b3
MR		 2460 */
2461int drm_mode_setplane(struct drm_device *dev, void *data,
2462 struct drm_file *file_priv)
2463{
2464 struct drm_mode_set_plane *plane_req = data;
b36552b3
MR		 2465 struct drm_plane *plane;
2466 struct drm_crtc *crtc = NULL;
2467 struct drm_framebuffer *fb = NULL;
2468
2469 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2470 return -EINVAL;
2471
b36552b3
MR		 2472 /*
2473 * First, find the plane, crtc, and fb objects. If not available,
2474 * we don't bother to call the driver.
2475 */
933f622f
RC		 2476 plane = drm_plane_find(dev, plane_req->plane_id);
2477 if (!plane) {
b36552b3
MR		 2478 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2479 plane_req->plane_id);
2480 return -ENOENT;
2481 }
b36552b3
MR		 2482
2483 if (plane_req->fb_id) {
2484 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2485 if (!fb) {
2486 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2487 plane_req->fb_id);
2488 return -ENOENT;
2489 }
2490
933f622f
RC		 2491 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2492 if (!crtc) {
b36552b3
MR		 2493 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2494 plane_req->crtc_id);
2495 return -ENOENT;
2496 }
b36552b3
MR		 2497 }
2498
161d0dc1
MR		 2499 /*
2500 * setplane_internal will take care of deref'ing either the old or new
2501 * framebuffer depending on success.
2502 */
17cfd91f 2503 return setplane_internal(plane, crtc, fb,
b36552b3
MR		 2504 plane_req->crtc_x, plane_req->crtc_y,
2505 plane_req->crtc_w, plane_req->crtc_h,
2506 plane_req->src_x, plane_req->src_y,
2507 plane_req->src_w, plane_req->src_h);
8cf5c917
JB		 2508}
2509
2d13b679
DV		 2510/**
2511 * drm_mode_set_config_internal - helper to call ->set_config
2512 * @set: modeset config to set
2513 *
2514 * This is a little helper to wrap internal calls to the ->set_config driver
2515 * interface. The only thing it adds is correct refcounting dance.
4dfd909f 2516 *
c8e32cc1 2517 * Returns:
1a498633 2518 * Zero on success, negative errno on failure.
2d13b679
DV		 2519 */
2520int drm_mode_set_config_internal(struct drm_mode_set *set)
2521{
2522 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2523 struct drm_framebuffer *fb;
2524 struct drm_crtc *tmp;
b0d12325
DV		 2525 int ret;
2526
5cef29aa
DV		 2527 /*
2528 * NOTE: ->set_config can also disable other crtcs (if we steal all
2529 * connectors from it), hence we need to refcount the fbs across all
2530 * crtcs. Atomic modeset will have saner semantics ...
2531 */
e4f62546 2532 drm_for_each_crtc(tmp, crtc->dev)
3d30a59b 2533 tmp->primary->old_fb = tmp->primary->fb;
5cef29aa 2534
b0d12325 2535 fb = set->fb;
2d13b679 2536
b0d12325
DV		 2537 ret = crtc->funcs->set_config(set);
2538 if (ret == 0) {
e13161af 2539 crtc->primary->crtc = crtc;
0fe27f06 2540 crtc->primary->fb = fb;
5cef29aa 2541 }
cc85e121 2542
e4f62546 2543 drm_for_each_crtc(tmp, crtc->dev) {
f4510a27
MR		 2544 if (tmp->primary->fb)
2545 drm_framebuffer_reference(tmp->primary->fb);
3d30a59b
DV		 2546 if (tmp->primary->old_fb)
2547 drm_framebuffer_unreference(tmp->primary->old_fb);
2548 tmp->primary->old_fb = NULL;
b0d12325
DV		 2549 }
2550
2551 return ret;
2d13b679
DV		 2552}
2553EXPORT_SYMBOL(drm_mode_set_config_internal);
2554
ecb7e16b
GP		 2555/**
2556 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2557 * @mode: mode to query
2558 * @hdisplay: hdisplay value to fill in
2559 * @vdisplay: vdisplay value to fill in
2560 *
2561 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2562 * the appropriate layout.
2563 */
2564void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2565 int *hdisplay, int *vdisplay)
2566{
2567 struct drm_display_mode adjusted;
2568
2569 drm_mode_copy(&adjusted, mode);
2570 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2571 *hdisplay = adjusted.crtc_hdisplay;
2572 *vdisplay = adjusted.crtc_vdisplay;
2573}
2574EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2575
af93629d
MR		 2576/**
2577 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2578 * CRTC viewport
2579 * @crtc: CRTC that framebuffer will be displayed on
2580 * @x: x panning
2581 * @y: y panning
2582 * @mode: mode that framebuffer will be displayed under
2583 * @fb: framebuffer to check size of
c11e9283 2584 */
af93629d
MR		 2585int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2586 int x, int y,
2587 const struct drm_display_mode *mode,
2588 const struct drm_framebuffer *fb)
c11e9283
DL		 2589
2590{
2591 int hdisplay, vdisplay;
2592
ecb7e16b 2593 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
a0c1bbb0 2594
33e0be63
VS		 2595 if (crtc->state &&
2596 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2597 BIT(DRM_ROTATE_270)))
c11e9283
DL		 2598 swap(hdisplay, vdisplay);
2599
ce8d9ecc
VS		 2600 return check_src_coords(x << 16, y << 16,
2601 hdisplay << 16, vdisplay << 16, fb);
c11e9283 2602}
af93629d 2603EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2604
f453ba04
DA		 2605/**
2606 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2607 * @dev: drm device for the ioctl
2608 * @data: data pointer for the ioctl
2609 * @file_priv: drm file for the ioctl call
f453ba04 2610 *
f453ba04
DA		 2611 * Build a new CRTC configuration based on user request.
2612 *
2613 * Called by the user via ioctl.
2614 *
c8e32cc1 2615 * Returns:
1a498633 2616 * Zero on success, negative errno on failure.
f453ba04
DA		 2617 */
2618int drm_mode_setcrtc(struct drm_device *dev, void *data,
2619 struct drm_file *file_priv)
2620{
2621 struct drm_mode_config *config = &dev->mode_config;
2622 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2623 struct drm_crtc *crtc;
f453ba04
DA		 2624 struct drm_connector **connector_set = NULL, *connector;
2625 struct drm_framebuffer *fb = NULL;
2626 struct drm_display_mode *mode = NULL;
2627 struct drm_mode_set set;
2628 uint32_t __user *set_connectors_ptr;
4a1b0714 2629 int ret;
f453ba04
DA		 2630 int i;
2631
fb3b06c8
DA		 2632 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2633 return -EINVAL;
2634
01447e9f
ZJ		 2635 /*
2636 * Universal plane src offsets are only 16.16, prevent havoc for
2637 * drivers using universal plane code internally.
2638 */
2639 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
1d97e915
VS		 2640 return -ERANGE;
2641
84849903 2642 drm_modeset_lock_all(dev);
a2b34e22
RC		 2643 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2644 if (!crtc) {
58367ed6 2645 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2646 ret = -ENOENT;
f453ba04
DA		 2647 goto out;
2648 }
9440106b 2649 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 2650
2651 if (crtc_req->mode_valid) {
2652 /* If we have a mode we need a framebuffer. */
2653 /* If we pass -1, set the mode with the currently bound fb */
2654 if (crtc_req->fb_id == -1) {
f4510a27 2655 if (!crtc->primary->fb) {
6653cc8d
VS		 2656 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2657 ret = -EINVAL;
2658 goto out;
f453ba04 2659 }
f4510a27 2660 fb = crtc->primary->fb;
b0d12325
DV		 2661 /* Make refcounting symmetric with the lookup path. */
2662 drm_framebuffer_reference(fb);
f453ba04 2663 } else {
786b99ed
DV		 2664 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2665 if (!fb) {
58367ed6
ZY		 2666 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2667 crtc_req->fb_id);
37c4e705 2668 ret = -ENOENT;
f453ba04
DA		 2669 goto out;
2670 }
f453ba04
DA		 2671 }
2672
2673 mode = drm_mode_create(dev);
ee34ab5b
VS		 2674 if (!mode) {
2675 ret = -ENOMEM;
2676 goto out;
2677 }
2678
934a8a89 2679 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
90367bf6
VS		 2680 if (ret) {
2681 DRM_DEBUG_KMS("Invalid mode\n");
2682 goto out;
2683 }
2684
f453ba04 2685 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2686
7eb5f302
LP		 2687 /*
2688 * Check whether the primary plane supports the fb pixel format.
2689 * Drivers not implementing the universal planes API use a
2690 * default formats list provided by the DRM core which doesn't
2691 * match real hardware capabilities. Skip the check in that
2692 * case.
2693 */
2694 if (!crtc->primary->format_default) {
2695 ret = drm_plane_check_pixel_format(crtc->primary,
2696 fb->pixel_format);
2697 if (ret) {
2698 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2699 drm_get_format_name(fb->pixel_format));
2700 goto out;
2701 }
2702 }
2703
c11e9283
DL		 2704 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2705 mode, fb);
2706 if (ret)
5f61bb42 2707 goto out;
c11e9283 2708
f453ba04
DA		 2709 }
2710
2711 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2712 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2713 ret = -EINVAL;
2714 goto out;
2715 }
2716
7781de74 2717 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2718 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2719 crtc_req->count_connectors);
2720 ret = -EINVAL;
2721 goto out;
2722 }
2723
2724 if (crtc_req->count_connectors > 0) {
2725 u32 out_id;
2726
2727 /* Avoid unbounded kernel memory allocation */
2728 if (crtc_req->count_connectors > config->num_connector) {
2729 ret = -EINVAL;
2730 goto out;
2731 }
2732
2f6c5389
TR		 2733 connector_set = kmalloc_array(crtc_req->count_connectors,
2734 sizeof(struct drm_connector *),
2735 GFP_KERNEL);
f453ba04
DA		 2736 if (!connector_set) {
2737 ret = -ENOMEM;
2738 goto out;
2739 }
2740
2741 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2742 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2743 if (get_user(out_id, &set_connectors_ptr[i])) {
2744 ret = -EFAULT;
2745 goto out;
2746 }
2747
a2b34e22
RC		 2748 connector = drm_connector_find(dev, out_id);
2749 if (!connector) {
58367ed6
ZY		 2750 DRM_DEBUG_KMS("Connector id %d unknown\n",
2751 out_id);
f27657f2 2752 ret = -ENOENT;
f453ba04
DA		 2753 goto out;
2754 }
9440106b
JG		 2755 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2756 connector->base.id,
25933820 2757 connector->name);
f453ba04
DA		 2758
2759 connector_set[i] = connector;
2760 }
2761 }
2762
2763 set.crtc = crtc;
2764 set.x = crtc_req->x;
2765 set.y = crtc_req->y;
2766 set.mode = mode;
2767 set.connectors = connector_set;
2768 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2769 set.fb = fb;
2d13b679 2770 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2771
2772out:
b0d12325
DV		 2773 if (fb)
2774 drm_framebuffer_unreference(fb);
2775
f453ba04 2776 kfree(connector_set);
ee34ab5b 2777 drm_mode_destroy(dev, mode);
84849903 2778 drm_modeset_unlock_all(dev);
f453ba04
DA		 2779 return ret;
2780}
2781
161d0dc1
MR		 2782/**
2783 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2784 * universal plane handler call
2785 * @crtc: crtc to update cursor for
2786 * @req: data pointer for the ioctl
2787 * @file_priv: drm file for the ioctl call
2788 *
2789 * Legacy cursor ioctl's work directly with driver buffer handles. To
2790 * translate legacy ioctl calls into universal plane handler calls, we need to
2791 * wrap the native buffer handle in a drm_framebuffer.
2792 *
2793 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2794 * buffer with a pitch of 4*width; the universal plane interface should be used
2795 * directly in cases where the hardware can support other buffer settings and
2796 * userspace wants to make use of these capabilities.
2797 *
2798 * Returns:
1a498633 2799 * Zero on success, negative errno on failure.
161d0dc1
MR		 2800 */
2801static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2802 struct drm_mode_cursor2 *req,
2803 struct drm_file *file_priv)
2804{
2805 struct drm_device *dev = crtc->dev;
2806 struct drm_framebuffer *fb = NULL;
2807 struct drm_mode_fb_cmd2 fbreq = {
2808 .width = req->width,
2809 .height = req->height,
2810 .pixel_format = DRM_FORMAT_ARGB8888,
2811 .pitches = { req->width * 4 },
2812 .handles = { req->handle },
2813 };
2814 int32_t crtc_x, crtc_y;
2815 uint32_t crtc_w = 0, crtc_h = 0;
2816 uint32_t src_w = 0, src_h = 0;
2817 int ret = 0;
2818
2819 BUG_ON(!crtc->cursor);
f2b50c11 2820 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
161d0dc1
MR		 2821
2822 /*
2823 * Obtain fb we'll be using (either new or existing) and take an extra
2824 * reference to it if fb != null. setplane will take care of dropping
2825 * the reference if the plane update fails.
2826 */
2827 if (req->flags & DRM_MODE_CURSOR_BO) {
2828 if (req->handle) {
9a6f5130 2829 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
161d0dc1
MR		 2830 if (IS_ERR(fb)) {
2831 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2832 return PTR_ERR(fb);
2833 }
161d0dc1
MR		 2834 } else {
2835 fb = NULL;
2836 }
2837 } else {
161d0dc1
MR		 2838 fb = crtc->cursor->fb;
2839 if (fb)
2840 drm_framebuffer_reference(fb);
161d0dc1
MR		 2841 }
2842
2843 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2844 crtc_x = req->x;
2845 crtc_y = req->y;
2846 } else {
2847 crtc_x = crtc->cursor_x;
2848 crtc_y = crtc->cursor_y;
2849 }
2850
2851 if (fb) {
2852 crtc_w = fb->width;
2853 crtc_h = fb->height;
2854 src_w = fb->width << 16;
2855 src_h = fb->height << 16;
2856 }
2857
2858 /*
2859 * setplane_internal will take care of deref'ing either the old or new
2860 * framebuffer depending on success.
2861 */
f2b50c11 2862 ret = __setplane_internal(crtc->cursor, crtc, fb,
161d0dc1
MR		 2863 crtc_x, crtc_y, crtc_w, crtc_h,
2864 0, 0, src_w, src_h);
2865
2866 /* Update successful; save new cursor position, if necessary */
2867 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2868 crtc->cursor_x = req->x;
2869 crtc->cursor_y = req->y;
2870 }
2871
2872 return ret;
2873}
2874
4c813d4d
DA		 2875static int drm_mode_cursor_common(struct drm_device *dev,
2876 struct drm_mode_cursor2 *req,
2877 struct drm_file *file_priv)
f453ba04 2878{
f453ba04
DA		 2879 struct drm_crtc *crtc;
2880 int ret = 0;
2881
fb3b06c8
DA		 2882 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2883 return -EINVAL;
2884
7c4eaca4 2885 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 2886 return -EINVAL;
f453ba04 2887
a2b34e22
RC		 2888 crtc = drm_crtc_find(dev, req->crtc_id);
2889 if (!crtc) {
58367ed6 2890 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 2891 return -ENOENT;
f453ba04 2892 }
f453ba04 2893
161d0dc1
MR		 2894 /*
2895 * If this crtc has a universal cursor plane, call that plane's update
2896 * handler rather than using legacy cursor handlers.
2897 */
4d02e2de 2898 drm_modeset_lock_crtc(crtc, crtc->cursor);
f2b50c11
DV		 2899 if (crtc->cursor) {
2900 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2901 goto out;
2902 }
2903
f453ba04 2904 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 2905 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 2906 ret = -ENXIO;
2907 goto out;
2908 }
2909 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 2910 if (crtc->funcs->cursor_set2)
2911 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2912 req->width, req->height, req->hot_x, req->hot_y);
2913 else
2914 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2915 req->width, req->height);
f453ba04
DA		 2916 }
2917
2918 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2919 if (crtc->funcs->cursor_move) {
2920 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2921 } else {
f453ba04
DA		 2922 ret = -EFAULT;
2923 goto out;
2924 }
2925 }
2926out:
d059f652 2927 drm_modeset_unlock_crtc(crtc);
dac35663 2928
f453ba04 2929 return ret;
4c813d4d
DA		 2930
2931}
c8e32cc1
DV		 2932
2933
2934/**
2935 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2936 * @dev: drm device for the ioctl
2937 * @data: data pointer for the ioctl
2938 * @file_priv: drm file for the ioctl call
2939 *
2940 * Set the cursor configuration based on user request.
2941 *
2942 * Called by the user via ioctl.
2943 *
2944 * Returns:
1a498633 2945 * Zero on success, negative errno on failure.
c8e32cc1 2946 */
4c813d4d 2947int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 2948 void *data, struct drm_file *file_priv)
4c813d4d
DA		 2949{
2950 struct drm_mode_cursor *req = data;
2951 struct drm_mode_cursor2 new_req;
2952
2953 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2954 new_req.hot_x = new_req.hot_y = 0;
2955
2956 return drm_mode_cursor_common(dev, &new_req, file_priv);
2957}
2958
c8e32cc1
DV		 2959/**
2960 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2961 * @dev: drm device for the ioctl
2962 * @data: data pointer for the ioctl
2963 * @file_priv: drm file for the ioctl call
2964 *
2965 * Set the cursor configuration based on user request. This implements the 2nd
2966 * version of the cursor ioctl, which allows userspace to additionally specify
2967 * the hotspot of the pointer.
2968 *
2969 * Called by the user via ioctl.
2970 *
2971 * Returns:
1a498633 2972 * Zero on success, negative errno on failure.
c8e32cc1 2973 */
4c813d4d
DA		 2974int drm_mode_cursor2_ioctl(struct drm_device *dev,
2975 void *data, struct drm_file *file_priv)
2976{
2977 struct drm_mode_cursor2 *req = data;
4dfd909f 2978
4c813d4d 2979 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 2980}
2981
c8e32cc1
DV		 2982/**
2983 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2984 * @bpp: bits per pixels
2985 * @depth: bit depth per pixel
2986 *
2987 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2988 * Useful in fbdev emulation code, since that deals in those values.
2989 */
308e5bcb
JB		 2990uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2991{
2992 uint32_t fmt;
2993
2994 switch (bpp) {
2995 case 8:
d84f031b 2996 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 2997 break;
2998 case 16:
2999 if (depth == 15)
04b3924d 3000 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 3001 else
04b3924d 3002 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 3003 break;
3004 case 24:
04b3924d 3005 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 3006 break;
3007 case 32:
3008 if (depth == 24)
04b3924d 3009 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 3010 else if (depth == 30)
04b3924d 3011 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 3012 else
04b3924d 3013 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 3014 break;
3015 default:
04b3924d
VS		 3016 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3017 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 3018 break;
3019 }
3020
3021 return fmt;
3022}
3023EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3024
f453ba04
DA		 3025/**
3026 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 3027 * @dev: drm device for the ioctl
3028 * @data: data pointer for the ioctl
3029 * @file_priv: drm file for the ioctl call
f453ba04 3030 *
c8e32cc1 3031 * Add a new FB to the specified CRTC, given a user request. This is the
209f5527 3032 * original addfb ioctl which only supported RGB formats.
f453ba04
DA		 3033 *
3034 * Called by the user via ioctl.
3035 *
c8e32cc1 3036 * Returns:
1a498633 3037 * Zero on success, negative errno on failure.
f453ba04
DA		 3038 */
3039int drm_mode_addfb(struct drm_device *dev,
3040 void *data, struct drm_file *file_priv)
3041{
308e5bcb
JB		 3042 struct drm_mode_fb_cmd *or = data;
3043 struct drm_mode_fb_cmd2 r = {};
228f2cb3 3044 int ret;
308e5bcb 3045
228f2cb3 3046 /* convert to new format and call new ioctl */
308e5bcb
JB		 3047 r.fb_id = or->fb_id;
3048 r.width = or->width;
3049 r.height = or->height;
3050 r.pitches[0] = or->pitch;
3051 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3052 r.handles[0] = or->handle;
3053
228f2cb3
CE		 3054 ret = drm_mode_addfb2(dev, &r, file_priv);
3055 if (ret)
3056 return ret;
308e5bcb 3057
228f2cb3 3058 or->fb_id = r.fb_id;
4b096ac1 3059
baf698b0 3060 return 0;
308e5bcb
JB		 3061}
3062
cff91b62 3063static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 3064{
3065 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3066
3067 switch (format) {
3068 case DRM_FORMAT_C8:
3069 case DRM_FORMAT_RGB332:
3070 case DRM_FORMAT_BGR233:
3071 case DRM_FORMAT_XRGB4444:
3072 case DRM_FORMAT_XBGR4444:
3073 case DRM_FORMAT_RGBX4444:
3074 case DRM_FORMAT_BGRX4444:
3075 case DRM_FORMAT_ARGB4444:
3076 case DRM_FORMAT_ABGR4444:
3077 case DRM_FORMAT_RGBA4444:
3078 case DRM_FORMAT_BGRA4444:
3079 case DRM_FORMAT_XRGB1555:
3080 case DRM_FORMAT_XBGR1555:
3081 case DRM_FORMAT_RGBX5551:
3082 case DRM_FORMAT_BGRX5551:
3083 case DRM_FORMAT_ARGB1555:
3084 case DRM_FORMAT_ABGR1555:
3085 case DRM_FORMAT_RGBA5551:
3086 case DRM_FORMAT_BGRA5551:
3087 case DRM_FORMAT_RGB565:
3088 case DRM_FORMAT_BGR565:
3089 case DRM_FORMAT_RGB888:
3090 case DRM_FORMAT_BGR888:
3091 case DRM_FORMAT_XRGB8888:
3092 case DRM_FORMAT_XBGR8888:
3093 case DRM_FORMAT_RGBX8888:
3094 case DRM_FORMAT_BGRX8888:
3095 case DRM_FORMAT_ARGB8888:
3096 case DRM_FORMAT_ABGR8888:
3097 case DRM_FORMAT_RGBA8888:
3098 case DRM_FORMAT_BGRA8888:
3099 case DRM_FORMAT_XRGB2101010:
3100 case DRM_FORMAT_XBGR2101010:
3101 case DRM_FORMAT_RGBX1010102:
3102 case DRM_FORMAT_BGRX1010102:
3103 case DRM_FORMAT_ARGB2101010:
3104 case DRM_FORMAT_ABGR2101010:
3105 case DRM_FORMAT_RGBA1010102:
3106 case DRM_FORMAT_BGRA1010102:
3107 case DRM_FORMAT_YUYV:
3108 case DRM_FORMAT_YVYU:
3109 case DRM_FORMAT_UYVY:
3110 case DRM_FORMAT_VYUY:
3111 case DRM_FORMAT_AYUV:
3112 case DRM_FORMAT_NV12:
3113 case DRM_FORMAT_NV21:
3114 case DRM_FORMAT_NV16:
3115 case DRM_FORMAT_NV61:
ba623f6a
LP		 3116 case DRM_FORMAT_NV24:
3117 case DRM_FORMAT_NV42:
935b5977
VS		 3118 case DRM_FORMAT_YUV410:
3119 case DRM_FORMAT_YVU410:
3120 case DRM_FORMAT_YUV411:
3121 case DRM_FORMAT_YVU411:
3122 case DRM_FORMAT_YUV420:
3123 case DRM_FORMAT_YVU420:
3124 case DRM_FORMAT_YUV422:
3125 case DRM_FORMAT_YVU422:
3126 case DRM_FORMAT_YUV444:
3127 case DRM_FORMAT_YVU444:
3128 return 0;
3129 default:
23c453a4
VS		 3130 DRM_DEBUG_KMS("invalid pixel format %s\n",
3131 drm_get_format_name(r->pixel_format));
935b5977
VS		 3132 return -EINVAL;
3133 }
3134}
3135
cff91b62 3136static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 3137{
3138 int ret, hsub, vsub, num_planes, i;
3139
3140 ret = format_check(r);
3141 if (ret) {
6ba6d03e
VS		 3142 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3143 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 3144 return ret;
3145 }
3146
3147 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3148 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3149 num_planes = drm_format_num_planes(r->pixel_format);
3150
3151 if (r->width == 0 || r->width % hsub) {
209f5527 3152 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
d1b45d5f
VS		 3153 return -EINVAL;
3154 }
3155
3156 if (r->height == 0 || r->height % vsub) {
1aa1b11c 3157 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 3158 return -EINVAL;
3159 }
3160
3161 for (i = 0; i < num_planes; i++) {
3162 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 3163 unsigned int height = r->height / (i != 0 ? vsub : 1);
3164 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 3165
3166 if (!r->handles[i]) {
1aa1b11c 3167 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 3168 return -EINVAL;
3169 }
3170
b180b5d1
VS		 3171 if ((uint64_t) width * cpp > UINT_MAX)
3172 return -ERANGE;
3173
3174 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3175 return -ERANGE;
3176
3177 if (r->pitches[i] < width * cpp) {
1aa1b11c 3178 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 3179 return -EINVAL;
3180 }
e3eb3250
RC		 3181
3182 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3183 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3184 r->modifier[i], i);
3185 return -EINVAL;
3186 }
570655b0
RC		 3187
3188 /* modifier specific checks: */
3189 switch (r->modifier[i]) {
3190 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3191 /* NOTE: the pitch restriction may be lifted later if it turns
3192 * out that no hw has this restriction:
3193 */
3194 if (r->pixel_format != DRM_FORMAT_NV12 ||
3195 width % 128 || height % 32 ||
3196 r->pitches[i] % 128) {
3197 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3198 return -EINVAL;
3199 }
3200 break;
3201
3202 default:
3203 break;
3204 }
d1b45d5f
VS		 3205 }
3206
bbe16a40
DV		 3207 for (i = num_planes; i < 4; i++) {
3208 if (r->modifier[i]) {
3209 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3210 return -EINVAL;
3211 }
3212
3213 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3214 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3215 continue;
3216
3217 if (r->handles[i]) {
3218 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3219 return -EINVAL;
3220 }
3221
3222 if (r->pitches[i]) {
3223 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3224 return -EINVAL;
3225 }
3226
3227 if (r->offsets[i]) {
3228 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3229 return -EINVAL;
3230 }
3231 }
3232
d1b45d5f
VS		 3233 return 0;
3234}
3235
9a6f5130
CW		 3236static struct drm_framebuffer *
3237internal_framebuffer_create(struct drm_device *dev,
3238 struct drm_mode_fb_cmd2 *r,
3239 struct drm_file *file_priv)
308e5bcb 3240{
f453ba04
DA		 3241 struct drm_mode_config *config = &dev->mode_config;
3242 struct drm_framebuffer *fb;
4a1b0714 3243 int ret;
f453ba04 3244
e3eb3250 3245 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
e3cc3520 3246 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
c394c2b0 3247 return ERR_PTR(-EINVAL);
e3cc3520
VS		 3248 }
3249
f453ba04 3250 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 3251 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 3252 r->width, config->min_width, config->max_width);
c394c2b0 3253 return ERR_PTR(-EINVAL);
f453ba04
DA		 3254 }
3255 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 3256 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 3257 r->height, config->min_height, config->max_height);
c394c2b0 3258 return ERR_PTR(-EINVAL);
f453ba04
DA		 3259 }
3260
e3eb3250
RC		 3261 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3262 !dev->mode_config.allow_fb_modifiers) {
3263 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3264 return ERR_PTR(-EINVAL);
3265 }
3266
d1b45d5f
VS		 3267 ret = framebuffer_check(r);
3268 if (ret)
c394c2b0 3269 return ERR_PTR(ret);
935b5977 3270
f453ba04 3271 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 3272 if (IS_ERR(fb)) {
1aa1b11c 3273 DRM_DEBUG_KMS("could not create framebuffer\n");
c394c2b0 3274 return fb;
f453ba04
DA		 3275 }
3276
c394c2b0
MR		 3277 return fb;
3278}
4b096ac1 3279
c394c2b0
MR		 3280/**
3281 * drm_mode_addfb2 - add an FB to the graphics configuration
3282 * @dev: drm device for the ioctl
3283 * @data: data pointer for the ioctl
3284 * @file_priv: drm file for the ioctl call
3285 *
3286 * Add a new FB to the specified CRTC, given a user request with format. This is
3287 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3288 * and uses fourcc codes as pixel format specifiers.
3289 *
3290 * Called by the user via ioctl.
3291 *
3292 * Returns:
1a498633 3293 * Zero on success, negative errno on failure.
c394c2b0
MR		 3294 */
3295int drm_mode_addfb2(struct drm_device *dev,
3296 void *data, struct drm_file *file_priv)
3297{
9a6f5130 3298 struct drm_mode_fb_cmd2 *r = data;
c394c2b0
MR		 3299 struct drm_framebuffer *fb;
3300
3301 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3302 return -EINVAL;
3303
9a6f5130 3304 fb = internal_framebuffer_create(dev, r, file_priv);
c394c2b0
MR		 3305 if (IS_ERR(fb))
3306 return PTR_ERR(fb);
3307
9a6f5130
CW		 3308 /* Transfer ownership to the filp for reaping on close */
3309
3310 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3311 mutex_lock(&file_priv->fbs_lock);
3312 r->fb_id = fb->base.id;
3313 list_add(&fb->filp_head, &file_priv->fbs);
3314 mutex_unlock(&file_priv->fbs_lock);
3315
c394c2b0 3316 return 0;
f453ba04
DA		 3317}
3318
3319/**
3320 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 3321 * @dev: drm device for the ioctl
3322 * @data: data pointer for the ioctl
3323 * @file_priv: drm file for the ioctl call
f453ba04 3324 *
f453ba04
DA		 3325 * Remove the FB specified by the user.
3326 *
3327 * Called by the user via ioctl.
3328 *
c8e32cc1 3329 * Returns:
1a498633 3330 * Zero on success, negative errno on failure.
f453ba04
DA		 3331 */
3332int drm_mode_rmfb(struct drm_device *dev,
3333 void *data, struct drm_file *file_priv)
3334{
f453ba04
DA		 3335 struct drm_framebuffer *fb = NULL;
3336 struct drm_framebuffer *fbl = NULL;
3337 uint32_t *id = data;
f453ba04
DA		 3338 int found = 0;
3339
fb3b06c8
DA		 3340 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3341 return -EINVAL;
3342
4b096ac1 3343 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 3344 mutex_lock(&dev->mode_config.fb_lock);
3345 fb = __drm_framebuffer_lookup(dev, *id);
3346 if (!fb)
3347 goto fail_lookup;
3348
f453ba04
DA		 3349 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3350 if (fb == fbl)
3351 found = 1;
2b677e8c
DV		 3352 if (!found)
3353 goto fail_lookup;
3354
4b096ac1 3355 list_del_init(&fb->filp_head);
2b677e8c 3356 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 3357 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3358
13803132 3359 drm_framebuffer_unreference(fb);
4b096ac1 3360
2b677e8c
DV		 3361 return 0;
3362
3363fail_lookup:
3364 mutex_unlock(&dev->mode_config.fb_lock);
3365 mutex_unlock(&file_priv->fbs_lock);
3366
37c4e705 3367 return -ENOENT;
f453ba04
DA		 3368}
3369
3370/**
3371 * drm_mode_getfb - get FB info
065a50ed
DV		 3372 * @dev: drm device for the ioctl
3373 * @data: data pointer for the ioctl
3374 * @file_priv: drm file for the ioctl call
f453ba04 3375 *
f453ba04
DA		 3376 * Lookup the FB given its ID and return info about it.
3377 *
3378 * Called by the user via ioctl.
3379 *
c8e32cc1 3380 * Returns:
1a498633 3381 * Zero on success, negative errno on failure.
f453ba04
DA		 3382 */
3383int drm_mode_getfb(struct drm_device *dev,
3384 void *data, struct drm_file *file_priv)
3385{
3386 struct drm_mode_fb_cmd *r = data;
f453ba04 3387 struct drm_framebuffer *fb;
58c0dca1 3388 int ret;
f453ba04 3389
fb3b06c8
DA		 3390 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3391 return -EINVAL;
3392
786b99ed 3393 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 3394 if (!fb)
37c4e705 3395 return -ENOENT;
f453ba04
DA		 3396
3397 r->height = fb->height;
3398 r->width = fb->width;
3399 r->depth = fb->depth;
3400 r->bpp = fb->bits_per_pixel;
01f2c773 3401 r->pitch = fb->pitches[0];
101b96f3 3402 if (fb->funcs->create_handle) {
09f308f7 3403 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 3404 drm_is_control_client(file_priv)) {
101b96f3
DH		 3405 ret = fb->funcs->create_handle(fb, file_priv,
3406 &r->handle);
3407 } else {
3408 /* GET_FB() is an unprivileged ioctl so we must not
3409 * return a buffer-handle to non-master processes! For
3410 * backwards-compatibility reasons, we cannot make
3411 * GET_FB() privileged, so just return an invalid handle
3412 * for non-masters. */
3413 r->handle = 0;
3414 ret = 0;
3415 }
3416 } else {
af26ef3b 3417 ret = -ENODEV;
101b96f3 3418 }
f453ba04 3419
58c0dca1
DV		 3420 drm_framebuffer_unreference(fb);
3421
f453ba04
DA		 3422 return ret;
3423}
3424
c8e32cc1
DV		 3425/**
3426 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3427 * @dev: drm device for the ioctl
3428 * @data: data pointer for the ioctl
3429 * @file_priv: drm file for the ioctl call
3430 *
3431 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3432 * rectangle list. Generic userspace which does frontbuffer rendering must call
3433 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3434 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3435 *
3436 * Modesetting drivers which always update the frontbuffer do not need to
3437 * implement the corresponding ->dirty framebuffer callback.
3438 *
3439 * Called by the user via ioctl.
3440 *
3441 * Returns:
1a498633 3442 * Zero on success, negative errno on failure.
c8e32cc1 3443 */
884840aa
JB		 3444int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3445 void *data, struct drm_file *file_priv)
3446{
3447 struct drm_clip_rect __user *clips_ptr;
3448 struct drm_clip_rect *clips = NULL;
3449 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 3450 struct drm_framebuffer *fb;
3451 unsigned flags;
3452 int num_clips;
4a1b0714 3453 int ret;
884840aa 3454
fb3b06c8
DA		 3455 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3456 return -EINVAL;
3457
786b99ed 3458 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 3459 if (!fb)
37c4e705 3460 return -ENOENT;
884840aa
JB		 3461
3462 num_clips = r->num_clips;
81f6c7f8 3463 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 3464
3465 if (!num_clips != !clips_ptr) {
3466 ret = -EINVAL;
3467 goto out_err1;
3468 }
3469
3470 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3471
3472 /* If userspace annotates copy, clips must come in pairs */
3473 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3474 ret = -EINVAL;
3475 goto out_err1;
3476 }
3477
3478 if (num_clips && clips_ptr) {
a5cd3351
XW		 3479 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3480 ret = -EINVAL;
3481 goto out_err1;
3482 }
bd3f0ff9 3483 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
884840aa
JB		 3484 if (!clips) {
3485 ret = -ENOMEM;
3486 goto out_err1;
3487 }
3488
3489 ret = copy_from_user(clips, clips_ptr,
3490 num_clips * sizeof(*clips));
e902a358
DC		 3491 if (ret) {
3492 ret = -EFAULT;
884840aa 3493 goto out_err2;
e902a358 3494 }
884840aa
JB		 3495 }
3496
3497 if (fb->funcs->dirty) {
02b00162
TH		 3498 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3499 clips, num_clips);
884840aa
JB		 3500 } else {
3501 ret = -ENOSYS;
884840aa
JB		 3502 }
3503
3504out_err2:
3505 kfree(clips);
3506out_err1:
4ccf097f
DV		 3507 drm_framebuffer_unreference(fb);
3508
884840aa
JB		 3509 return ret;
3510}
3511
3512
f453ba04
DA		 3513/**
3514 * drm_fb_release - remove and free the FBs on this file
065a50ed 3515 * @priv: drm file for the ioctl
f453ba04 3516 *
f453ba04
DA		 3517 * Destroy all the FBs associated with @filp.
3518 *
3519 * Called by the user via ioctl.
3520 *
c8e32cc1 3521 * Returns:
1a498633 3522 * Zero on success, negative errno on failure.
f453ba04 3523 */
ea39f835 3524void drm_fb_release(struct drm_file *priv)
f453ba04 3525{
f453ba04
DA		 3526 struct drm_framebuffer *fb, *tfb;
3527
1b116297
DV		 3528 /*
3529 * When the file gets released that means no one else can access the fb
e2db726b 3530 * list any more, so no need to grab fpriv->fbs_lock. And we need to
1b116297
DV		 3531 * avoid upsetting lockdep since the universal cursor code adds a
3532 * framebuffer while holding mutex locks.
3533 *
3534 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3535 * locks is impossible here since no one else but this function can get
3536 * at it any more.
3537 */
f453ba04 3538 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
4b096ac1 3539 list_del_init(&fb->filp_head);
2b677e8c 3540
73f7570b 3541 /* This drops the fpriv->fbs reference. */
13803132 3542 drm_framebuffer_unreference(fb);
f453ba04 3543 }
f453ba04
DA		 3544}
3545
c8e32cc1
DV		 3546/**
3547 * drm_property_create - create a new property type
3548 * @dev: drm device
3549 * @flags: flags specifying the property type
3550 * @name: name of the property
3551 * @num_values: number of pre-defined values
3552 *
3553 * This creates a new generic drm property which can then be attached to a drm
3554 * object with drm_object_attach_property. The returned property object must be
3555 * freed with drm_property_destroy.
3556 *
3b5b9932
DL		 3557 * Note that the DRM core keeps a per-device list of properties and that, if
3558 * drm_mode_config_cleanup() is called, it will destroy all properties created
3559 * by the driver.
3560 *
c8e32cc1
DV		 3561 * Returns:
3562 * A pointer to the newly created property on success, NULL on failure.
3563 */
f453ba04
DA		 3564struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3565 const char *name, int num_values)
3566{
3567 struct drm_property *property = NULL;
6bfc56aa 3568 int ret;
f453ba04
DA		 3569
3570 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3571 if (!property)
3572 return NULL;
3573
98f75de4
RC		 3574 property->dev = dev;
3575
f453ba04 3576 if (num_values) {
bd3f0ff9
TR		 3577 property->values = kcalloc(num_values, sizeof(uint64_t),
3578 GFP_KERNEL);
f453ba04
DA		 3579 if (!property->values)
3580 goto fail;
3581 }
3582
6bfc56aa
VS		 3583 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3584 if (ret)
3585 goto fail;
3586
f453ba04
DA		 3587 property->flags = flags;
3588 property->num_values = num_values;
3758b341 3589 INIT_LIST_HEAD(&property->enum_list);
f453ba04 3590
471dd2ef 3591 if (name) {
f453ba04 3592 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3593 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3594 }
f453ba04
DA		 3595
3596 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3597
3598 WARN_ON(!drm_property_type_valid(property));
3599
f453ba04
DA		 3600 return property;
3601fail:
6bfc56aa 3602 kfree(property->values);
f453ba04
DA		 3603 kfree(property);
3604 return NULL;
3605}
3606EXPORT_SYMBOL(drm_property_create);
3607
c8e32cc1 3608/**
2aa9d2bc 3609 * drm_property_create_enum - create a new enumeration property type
c8e32cc1
DV		 3610 * @dev: drm device
3611 * @flags: flags specifying the property type
3612 * @name: name of the property
3613 * @props: enumeration lists with property values
3614 * @num_values: number of pre-defined values
3615 *
3616 * This creates a new generic drm property which can then be attached to a drm
3617 * object with drm_object_attach_property. The returned property object must be
3618 * freed with drm_property_destroy.
3619 *
3620 * Userspace is only allowed to set one of the predefined values for enumeration
3621 * properties.
3622 *
3623 * Returns:
3624 * A pointer to the newly created property on success, NULL on failure.
3625 */
4a67d391
SH		 3626struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3627 const char *name,
3628 const struct drm_prop_enum_list *props,
3629 int num_values)
3630{
3631 struct drm_property *property;
3632 int i, ret;
3633
3634 flags |= DRM_MODE_PROP_ENUM;
3635
3636 property = drm_property_create(dev, flags, name, num_values);
3637 if (!property)
3638 return NULL;
3639
3640 for (i = 0; i < num_values; i++) {
3641 ret = drm_property_add_enum(property, i,
3642 props[i].type,
3643 props[i].name);
3644 if (ret) {
3645 drm_property_destroy(dev, property);
3646 return NULL;
3647 }
3648 }
3649
3650 return property;
3651}
3652EXPORT_SYMBOL(drm_property_create_enum);
3653
c8e32cc1 3654/**
2aa9d2bc 3655 * drm_property_create_bitmask - create a new bitmask property type
c8e32cc1
DV		 3656 * @dev: drm device
3657 * @flags: flags specifying the property type
3658 * @name: name of the property
3659 * @props: enumeration lists with property bitflags
295ee853
DV		 3660 * @num_props: size of the @props array
3661 * @supported_bits: bitmask of all supported enumeration values
c8e32cc1 3662 *
295ee853 3663 * This creates a new bitmask drm property which can then be attached to a drm
c8e32cc1
DV		 3664 * object with drm_object_attach_property. The returned property object must be
3665 * freed with drm_property_destroy.
3666 *
3667 * Compared to plain enumeration properties userspace is allowed to set any
3668 * or'ed together combination of the predefined property bitflag values
3669 *
3670 * Returns:
3671 * A pointer to the newly created property on success, NULL on failure.
3672 */
49e27545
RC		 3673struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3674 int flags, const char *name,
3675 const struct drm_prop_enum_list *props,
7689ffb3
VS		 3676 int num_props,
3677 uint64_t supported_bits)
49e27545
RC		 3678{
3679 struct drm_property *property;
7689ffb3
VS		 3680 int i, ret, index = 0;
3681 int num_values = hweight64(supported_bits);
49e27545
RC		 3682
3683 flags |= DRM_MODE_PROP_BITMASK;
3684
3685 property = drm_property_create(dev, flags, name, num_values);
3686 if (!property)
3687 return NULL;
7689ffb3
VS		 3688 for (i = 0; i < num_props; i++) {
3689 if (!(supported_bits & (1ULL << props[i].type)))
3690 continue;
49e27545 3691
7689ffb3
VS		 3692 if (WARN_ON(index >= num_values)) {
3693 drm_property_destroy(dev, property);
3694 return NULL;
3695 }
3696
3697 ret = drm_property_add_enum(property, index++,
49e27545
RC		 3698 props[i].type,
3699 props[i].name);
3700 if (ret) {
3701 drm_property_destroy(dev, property);
3702 return NULL;
3703 }
3704 }
3705
3706 return property;
3707}
3708EXPORT_SYMBOL(drm_property_create_bitmask);
3709
ebc44cf3
RC		 3710static struct drm_property *property_create_range(struct drm_device *dev,
3711 int flags, const char *name,
3712 uint64_t min, uint64_t max)
3713{
3714 struct drm_property *property;
3715
3716 property = drm_property_create(dev, flags, name, 2);
3717 if (!property)
3718 return NULL;
3719
3720 property->values[0] = min;
3721 property->values[1] = max;
3722
3723 return property;
3724}
3725
c8e32cc1 3726/**
960cd9d4 3727 * drm_property_create_range - create a new unsigned ranged property type
c8e32cc1
DV		 3728 * @dev: drm device
3729 * @flags: flags specifying the property type
3730 * @name: name of the property
3731 * @min: minimum value of the property
3732 * @max: maximum value of the property
3733 *
3734 * This creates a new generic drm property which can then be attached to a drm
3735 * object with drm_object_attach_property. The returned property object must be
3736 * freed with drm_property_destroy.
3737 *
960cd9d4
DV		 3738 * Userspace is allowed to set any unsigned integer value in the (min, max)
3739 * range inclusive.
c8e32cc1
DV		 3740 *
3741 * Returns:
3742 * A pointer to the newly created property on success, NULL on failure.
3743 */
d9bc3c02
SH		 3744struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3745 const char *name,
3746 uint64_t min, uint64_t max)
3747{
ebc44cf3
RC		 3748 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3749 name, min, max);
d9bc3c02
SH		 3750}
3751EXPORT_SYMBOL(drm_property_create_range);
3752
960cd9d4
DV		 3753/**
3754 * drm_property_create_signed_range - create a new signed ranged property type
3755 * @dev: drm device
3756 * @flags: flags specifying the property type
3757 * @name: name of the property
3758 * @min: minimum value of the property
3759 * @max: maximum value of the property
3760 *
3761 * This creates a new generic drm property which can then be attached to a drm
3762 * object with drm_object_attach_property. The returned property object must be
3763 * freed with drm_property_destroy.
3764 *
3765 * Userspace is allowed to set any signed integer value in the (min, max)
3766 * range inclusive.
3767 *
3768 * Returns:
3769 * A pointer to the newly created property on success, NULL on failure.
3770 */
ebc44cf3
RC		 3771struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3772 int flags, const char *name,
3773 int64_t min, int64_t max)
3774{
3775 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3776 name, I642U64(min), I642U64(max));
3777}
3778EXPORT_SYMBOL(drm_property_create_signed_range);
3779
960cd9d4
DV		 3780/**
3781 * drm_property_create_object - create a new object property type
3782 * @dev: drm device
3783 * @flags: flags specifying the property type
3784 * @name: name of the property
3785 * @type: object type from DRM_MODE_OBJECT_* defines
3786 *
3787 * This creates a new generic drm property which can then be attached to a drm
3788 * object with drm_object_attach_property. The returned property object must be
3789 * freed with drm_property_destroy.
3790 *
3791 * Userspace is only allowed to set this to any property value of the given
3792 * @type. Only useful for atomic properties, which is enforced.
3793 *
3794 * Returns:
3795 * A pointer to the newly created property on success, NULL on failure.
3796 */
98f75de4
RC		 3797struct drm_property *drm_property_create_object(struct drm_device *dev,
3798 int flags, const char *name, uint32_t type)
3799{
3800 struct drm_property *property;
3801
3802 flags |= DRM_MODE_PROP_OBJECT;
3803
960cd9d4
DV		 3804 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3805 return NULL;
3806
98f75de4
RC		 3807 property = drm_property_create(dev, flags, name, 1);
3808 if (!property)
3809 return NULL;
3810
3811 property->values[0] = type;
3812
3813 return property;
3814}
3815EXPORT_SYMBOL(drm_property_create_object);
3816
960cd9d4
DV		 3817/**
3818 * drm_property_create_bool - create a new boolean property type
3819 * @dev: drm device
3820 * @flags: flags specifying the property type
3821 * @name: name of the property
3822 *
3823 * This creates a new generic drm property which can then be attached to a drm
3824 * object with drm_object_attach_property. The returned property object must be
3825 * freed with drm_property_destroy.
3826 *
3827 * This is implemented as a ranged property with only {0, 1} as valid values.
3828 *
3829 * Returns:
3830 * A pointer to the newly created property on success, NULL on failure.
3831 */
3832struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3833 const char *name)
3834{
3835 return drm_property_create_range(dev, flags, name, 0, 1);
3836}
3837EXPORT_SYMBOL(drm_property_create_bool);
3838
c8e32cc1
DV		 3839/**
3840 * drm_property_add_enum - add a possible value to an enumeration property
3841 * @property: enumeration property to change
3842 * @index: index of the new enumeration
3843 * @value: value of the new enumeration
3844 * @name: symbolic name of the new enumeration
3845 *
3846 * This functions adds enumerations to a property.
3847 *
3848 * It's use is deprecated, drivers should use one of the more specific helpers
3849 * to directly create the property with all enumerations already attached.
3850 *
3851 * Returns:
3852 * Zero on success, error code on failure.
3853 */
f453ba04
DA		 3854int drm_property_add_enum(struct drm_property *property, int index,
3855 uint64_t value, const char *name)
3856{
3857 struct drm_property_enum *prop_enum;
3858
5ea22f24
RC		 3859 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3860 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 3861 return -EINVAL;
3862
3863 /*
3864 * Bitmask enum properties have the additional constraint of values
3865 * from 0 to 63
3866 */
5ea22f24
RC		 3867 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3868 (value > 63))
f453ba04
DA		 3869 return -EINVAL;
3870
3758b341
DV		 3871 if (!list_empty(&property->enum_list)) {
3872 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 3873 if (prop_enum->value == value) {
3874 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3875 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3876 return 0;
3877 }
3878 }
3879 }
3880
3881 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3882 if (!prop_enum)
3883 return -ENOMEM;
3884
3885 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3886 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3887 prop_enum->value = value;
3888
3889 property->values[index] = value;
3758b341 3890 list_add_tail(&prop_enum->head, &property->enum_list);
f453ba04
DA		 3891 return 0;
3892}
3893EXPORT_SYMBOL(drm_property_add_enum);
3894
c8e32cc1
DV		 3895/**
3896 * drm_property_destroy - destroy a drm property
3897 * @dev: drm device
3898 * @property: property to destry
3899 *
3900 * This function frees a property including any attached resources like
3901 * enumeration values.
3902 */
f453ba04
DA		 3903void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3904{
3905 struct drm_property_enum *prop_enum, *pt;
3906
3758b341 3907 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
f453ba04
DA		 3908 list_del(&prop_enum->head);
3909 kfree(prop_enum);
3910 }
3911
3912 if (property->num_values)
3913 kfree(property->values);
3914 drm_mode_object_put(dev, &property->base);
3915 list_del(&property->head);
3916 kfree(property);
3917}
3918EXPORT_SYMBOL(drm_property_destroy);
3919
c8e32cc1
DV		 3920/**
3921 * drm_object_attach_property - attach a property to a modeset object
3922 * @obj: drm modeset object
3923 * @property: property to attach
3924 * @init_val: initial value of the property
3925 *
3926 * This attaches the given property to the modeset object with the given initial
3927 * value. Currently this function cannot fail since the properties are stored in
3928 * a statically sized array.
3929 */
c543188a
PZ		 3930void drm_object_attach_property(struct drm_mode_object *obj,
3931 struct drm_property *property,
3932 uint64_t init_val)
3933{
7f88a9be 3934 int count = obj->properties->count;
c543188a 3935
7f88a9be
PZ		 3936 if (count == DRM_OBJECT_MAX_PROPERTY) {
3937 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3938 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3939 "you see this message on the same object type.\n",
3940 obj->type);
3941 return;
c543188a
PZ		 3942 }
3943
b17cd757 3944 obj->properties->properties[count] = property;
7f88a9be
PZ		 3945 obj->properties->values[count] = init_val;
3946 obj->properties->count++;
88a48e29
RC		 3947 if (property->flags & DRM_MODE_PROP_ATOMIC)
3948 obj->properties->atomic_count++;
c543188a
PZ		 3949}
3950EXPORT_SYMBOL(drm_object_attach_property);
3951
c8e32cc1
DV		 3952/**
3953 * drm_object_property_set_value - set the value of a property
3954 * @obj: drm mode object to set property value for
3955 * @property: property to set
3956 * @val: value the property should be set to
3957 *
3958 * This functions sets a given property on a given object. This function only
3959 * changes the software state of the property, it does not call into the
3960 * driver's ->set_property callback.
3961 *
3962 * Returns:
3963 * Zero on success, error code on failure.
3964 */
c543188a
PZ		 3965int drm_object_property_set_value(struct drm_mode_object *obj,
3966 struct drm_property *property, uint64_t val)
3967{
3968 int i;
3969
7f88a9be 3970 for (i = 0; i < obj->properties->count; i++) {
b17cd757 3971 if (obj->properties->properties[i] == property) {
c543188a
PZ		 3972 obj->properties->values[i] = val;
3973 return 0;
3974 }
3975 }
3976
3977 return -EINVAL;
3978}
3979EXPORT_SYMBOL(drm_object_property_set_value);
3980
c8e32cc1
DV		 3981/**
3982 * drm_object_property_get_value - retrieve the value of a property
3983 * @obj: drm mode object to get property value from
3984 * @property: property to retrieve
3985 * @val: storage for the property value
3986 *
3987 * This function retrieves the softare state of the given property for the given
3988 * property. Since there is no driver callback to retrieve the current property
3989 * value this might be out of sync with the hardware, depending upon the driver
3990 * and property.
3991 *
3992 * Returns:
3993 * Zero on success, error code on failure.
3994 */
c543188a
PZ		 3995int drm_object_property_get_value(struct drm_mode_object *obj,
3996 struct drm_property *property, uint64_t *val)
3997{
3998 int i;
3999
88a48e29
RC		 4000 /* read-only properties bypass atomic mechanism and still store
4001 * their value in obj->properties->values[].. mostly to avoid
4002 * having to deal w/ EDID and similar props in atomic paths:
4003 */
4004 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4005 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4006 return drm_atomic_get_property(obj, property, val);
4007
7f88a9be 4008 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4009 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4010 *val = obj->properties->values[i];
4011 return 0;
4012 }
4013 }
4014
4015 return -EINVAL;
4016}
4017EXPORT_SYMBOL(drm_object_property_get_value);
4018
c8e32cc1 4019/**
1a498633 4020 * drm_mode_getproperty_ioctl - get the property metadata
c8e32cc1
DV		 4021 * @dev: DRM device
4022 * @data: ioctl data
4023 * @file_priv: DRM file info
4024 *
1a498633
DV		 4025 * This function retrieves the metadata for a given property, like the different
4026 * possible values for an enum property or the limits for a range property.
4027 *
4028 * Blob properties are special
c8e32cc1
DV		 4029 *
4030 * Called by the user via ioctl.
4031 *
4032 * Returns:
1a498633 4033 * Zero on success, negative errno on failure.
c8e32cc1 4034 */
f453ba04
DA		 4035int drm_mode_getproperty_ioctl(struct drm_device *dev,
4036 void *data, struct drm_file *file_priv)
4037{
f453ba04
DA		 4038 struct drm_mode_get_property *out_resp = data;
4039 struct drm_property *property;
4040 int enum_count = 0;
f453ba04
DA		 4041 int value_count = 0;
4042 int ret = 0, i;
4043 int copied;
4044 struct drm_property_enum *prop_enum;
4045 struct drm_mode_property_enum __user *enum_ptr;
f453ba04 4046 uint64_t __user *values_ptr;
f453ba04 4047
fb3b06c8
DA		 4048 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4049 return -EINVAL;
4050
84849903 4051 drm_modeset_lock_all(dev);
a2b34e22
RC		 4052 property = drm_property_find(dev, out_resp->prop_id);
4053 if (!property) {
f27657f2 4054 ret = -ENOENT;
f453ba04
DA		 4055 goto done;
4056 }
f453ba04 4057
5ea22f24
RC		 4058 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4059 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3758b341 4060 list_for_each_entry(prop_enum, &property->enum_list, head)
f453ba04 4061 enum_count++;
f453ba04
DA		 4062 }
4063
4064 value_count = property->num_values;
4065
4066 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4067 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4068 out_resp->flags = property->flags;
4069
4070 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 4071 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 4072 for (i = 0; i < value_count; i++) {
4073 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4074 ret = -EFAULT;
4075 goto done;
4076 }
4077 }
4078 }
4079 out_resp->count_values = value_count;
4080
5ea22f24
RC		 4081 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4082 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 4083 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4084 copied = 0;
81f6c7f8 4085 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3758b341 4086 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 4087
4088 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4089 ret = -EFAULT;
4090 goto done;
4091 }
4092
4093 if (copy_to_user(&enum_ptr[copied].name,
4094 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4095 ret = -EFAULT;
4096 goto done;
4097 }
4098 copied++;
4099 }
4100 }
4101 out_resp->count_enum_blobs = enum_count;
4102 }
4103
3758b341
DV		 4104 /*
4105 * NOTE: The idea seems to have been to use this to read all the blob
4106 * property values. But nothing ever added them to the corresponding
4107 * list, userspace always used the special-purpose get_blob ioctl to
4108 * read the value for a blob property. It also doesn't make a lot of
4109 * sense to return values here when everything else is just metadata for
4110 * the property itself.
4111 */
4112 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4113 out_resp->count_enum_blobs = 0;
f453ba04 4114done:
84849903 4115 drm_modeset_unlock_all(dev);
f453ba04
DA		 4116 return ret;
4117}
4118
99531d9b
DS		 4119/**
4120 * drm_property_create_blob - Create new blob property
4121 *
4122 * Creates a new blob property for a specified DRM device, optionally
4123 * copying data.
4124 *
4125 * @dev: DRM device to create property for
4126 * @length: Length to allocate for blob data
4127 * @data: If specified, copies data into blob
10e8cb7e
DS		 4128 *
4129 * Returns:
4130 * New blob property with a single reference on success, or an ERR_PTR
4131 * value on failure.
99531d9b 4132 */
6bcacf51 4133struct drm_property_blob *
ecbbe59b 4134drm_property_create_blob(struct drm_device *dev, size_t length,
12e6cecd 4135 const void *data)
f453ba04
DA		 4136{
4137 struct drm_property_blob *blob;
6bfc56aa 4138 int ret;
f453ba04 4139
9ac0934b 4140 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
10e8cb7e 4141 return ERR_PTR(-EINVAL);
f453ba04
DA		 4142
4143 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4144 if (!blob)
10e8cb7e 4145 return ERR_PTR(-ENOMEM);
f453ba04 4146
e2f5d2ea
DS		 4147 /* This must be explicitly initialised, so we can safely call list_del
4148 * on it in the removal handler, even if it isn't in a file list. */
4149 INIT_LIST_HEAD(&blob->head_file);
8fb6e7a5 4150 blob->length = length;
6bcacf51 4151 blob->dev = dev;
8fb6e7a5 4152
99531d9b
DS		 4153 if (data)
4154 memcpy(blob->data, data, length);
8fb6e7a5
DS		 4155
4156 mutex_lock(&dev->mode_config.blob_lock);
4157
6bfc56aa
VS		 4158 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4159 if (ret) {
4160 kfree(blob);
8fb6e7a5 4161 mutex_unlock(&dev->mode_config.blob_lock);
10e8cb7e 4162 return ERR_PTR(-EINVAL);
6bfc56aa
VS		 4163 }
4164
6bcacf51 4165 kref_init(&blob->refcount);
f453ba04 4166
e2f5d2ea
DS		 4167 list_add_tail(&blob->head_global,
4168 &dev->mode_config.property_blob_list);
f453ba04 4169
8fb6e7a5 4170 mutex_unlock(&dev->mode_config.blob_lock);
f453ba04 4171
f453ba04
DA		 4172 return blob;
4173}
6bcacf51 4174EXPORT_SYMBOL(drm_property_create_blob);
f453ba04 4175
6bcacf51
DS		 4176/**
4177 * drm_property_free_blob - Blob property destructor
4178 *
4179 * Internal free function for blob properties; must not be used directly.
4180 *
f102c16e 4181 * @kref: Reference
6bcacf51
DS		 4182 */
4183static void drm_property_free_blob(struct kref *kref)
f453ba04 4184{
6bcacf51
DS		 4185 struct drm_property_blob *blob =
4186 container_of(kref, struct drm_property_blob, refcount);
4187
4188 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4189
e2f5d2ea
DS		 4190 list_del(&blob->head_global);
4191 list_del(&blob->head_file);
6bcacf51 4192 drm_mode_object_put(blob->dev, &blob->base);
8fb6e7a5 4193
f453ba04
DA		 4194 kfree(blob);
4195}
4196
6bcacf51
DS		 4197/**
4198 * drm_property_unreference_blob - Unreference a blob property
4199 *
4200 * Drop a reference on a blob property. May free the object.
4201 *
f102c16e 4202 * @blob: Pointer to blob property
6bcacf51
DS		 4203 */
4204void drm_property_unreference_blob(struct drm_property_blob *blob)
4205{
4206 struct drm_device *dev;
4207
4208 if (!blob)
4209 return;
4210
4211 dev = blob->dev;
4212
4213 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4214
4215 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4216 &dev->mode_config.blob_lock))
4217 mutex_unlock(&dev->mode_config.blob_lock);
4218 else
4219 might_lock(&dev->mode_config.blob_lock);
6bcacf51
DS		 4220}
4221EXPORT_SYMBOL(drm_property_unreference_blob);
4222
4223/**
4224 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4225 *
4226 * Drop a reference on a blob property. May free the object. This must be
4227 * called with blob_lock held.
4228 *
f102c16e 4229 * @blob: Pointer to blob property
6bcacf51
DS		 4230 */
4231static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4232{
4233 if (!blob)
4234 return;
4235
4236 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4237
4238 kref_put(&blob->refcount, drm_property_free_blob);
4239}
4240
e2f5d2ea
DS		 4241/**
4242 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4243 * @dev: DRM device
4244 * @file_priv: destroy all blobs owned by this file handle
4245 */
4246void drm_property_destroy_user_blobs(struct drm_device *dev,
4247 struct drm_file *file_priv)
4248{
4249 struct drm_property_blob *blob, *bt;
4250
4251 mutex_lock(&dev->mode_config.blob_lock);
4252
4253 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4254 list_del_init(&blob->head_file);
4255 drm_property_unreference_blob_locked(blob);
4256 }
4257
4258 mutex_unlock(&dev->mode_config.blob_lock);
4259}
4260
6bcacf51
DS		 4261/**
4262 * drm_property_reference_blob - Take a reference on an existing property
4263 *
4264 * Take a new reference on an existing blob property.
4265 *
f102c16e 4266 * @blob: Pointer to blob property
6bcacf51
DS		 4267 */
4268struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4269{
4270 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4271 kref_get(&blob->refcount);
4272 return blob;
4273}
4274EXPORT_SYMBOL(drm_property_reference_blob);
4275
4276/*
4277 * Like drm_property_lookup_blob, but does not return an additional reference.
4278 * Must be called with blob_lock held.
4279 */
4280static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4281 uint32_t id)
4282{
4283 struct drm_mode_object *obj = NULL;
4284 struct drm_property_blob *blob;
4285
4286 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4287
4288 mutex_lock(&dev->mode_config.idr_mutex);
4289 obj = idr_find(&dev->mode_config.crtc_idr, id);
4290 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4291 blob = NULL;
4292 else
4293 blob = obj_to_blob(obj);
4294 mutex_unlock(&dev->mode_config.idr_mutex);
4295
4296 return blob;
4297}
4298
4299/**
4300 * drm_property_lookup_blob - look up a blob property and take a reference
4301 * @dev: drm device
4302 * @id: id of the blob property
4303 *
4304 * If successful, this takes an additional reference to the blob property.
4305 * callers need to make sure to eventually unreference the returned property
4306 * again, using @drm_property_unreference_blob.
4307 */
4308struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4309 uint32_t id)
4310{
4311 struct drm_property_blob *blob;
4312
4313 mutex_lock(&dev->mode_config.blob_lock);
4314 blob = __drm_property_lookup_blob(dev, id);
4315 if (blob) {
4316 if (!kref_get_unless_zero(&blob->refcount))
4317 blob = NULL;
4318 }
4319 mutex_unlock(&dev->mode_config.blob_lock);
4320
4321 return blob;
4322}
4323EXPORT_SYMBOL(drm_property_lookup_blob);
4324
d2ed3436
DS		 4325/**
4326 * drm_property_replace_global_blob - atomically replace existing blob property
4327 * @dev: drm device
4328 * @replace: location of blob property pointer to be replaced
4329 * @length: length of data for new blob, or 0 for no data
4330 * @data: content for new blob, or NULL for no data
4331 * @obj_holds_id: optional object for property holding blob ID
4332 * @prop_holds_id: optional property holding blob ID
4333 * @return 0 on success or error on failure
4334 *
4335 * This function will atomically replace a global property in the blob list,
4336 * optionally updating a property which holds the ID of that property. It is
4337 * guaranteed to be atomic: no caller will be allowed to see intermediate
4338 * results, and either the entire operation will succeed and clean up the
4339 * previous property, or it will fail and the state will be unchanged.
4340 *
4341 * If length is 0 or data is NULL, no new blob will be created, and the holding
4342 * property, if specified, will be set to 0.
4343 *
4344 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4345 * by holding the relevant modesetting object lock for its parent.
4346 *
4347 * For example, a drm_connector has a 'PATH' property, which contains the ID
4348 * of a blob property with the value of the MST path information. Calling this
4349 * function with replace pointing to the connector's path_blob_ptr, length and
4350 * data set for the new path information, obj_holds_id set to the connector's
4351 * base object, and prop_holds_id set to the path property name, will perform
4352 * a completely atomic update. The access to path_blob_ptr is protected by the
4353 * caller holding a lock on the connector.
4354 */
4355static int drm_property_replace_global_blob(struct drm_device *dev,
4356 struct drm_property_blob **replace,
4357 size_t length,
4358 const void *data,
4359 struct drm_mode_object *obj_holds_id,
4360 struct drm_property *prop_holds_id)
4361{
4362 struct drm_property_blob *new_blob = NULL;
4363 struct drm_property_blob *old_blob = NULL;
4364 int ret;
4365
4366 WARN_ON(replace == NULL);
4367
4368 old_blob = *replace;
4369
4370 if (length && data) {
4371 new_blob = drm_property_create_blob(dev, length, data);
10e8cb7e
DS		 4372 if (IS_ERR(new_blob))
4373 return PTR_ERR(new_blob);
d2ed3436
DS		 4374 }
4375
4376 /* This does not need to be synchronised with blob_lock, as the
4377 * get_properties ioctl locks all modesetting objects, and
4378 * obj_holds_id must be locked before calling here, so we cannot
4379 * have its value out of sync with the list membership modified
4380 * below under blob_lock. */
4381 if (obj_holds_id) {
4382 ret = drm_object_property_set_value(obj_holds_id,
4383 prop_holds_id,
4384 new_blob ?
4385 new_blob->base.id : 0);
4386 if (ret != 0)
4387 goto err_created;
4388 }
4389
ec530829 4390 drm_property_unreference_blob(old_blob);
d2ed3436
DS		 4391 *replace = new_blob;
4392
4393 return 0;
4394
4395err_created:
6bcacf51 4396 drm_property_unreference_blob(new_blob);
d2ed3436
DS		 4397 return ret;
4398}
4399
c8e32cc1
DV		 4400/**
4401 * drm_mode_getblob_ioctl - get the contents of a blob property value
4402 * @dev: DRM device
4403 * @data: ioctl data
4404 * @file_priv: DRM file info
4405 *
4406 * This function retrieves the contents of a blob property. The value stored in
4407 * an object's blob property is just a normal modeset object id.
4408 *
4409 * Called by the user via ioctl.
4410 *
4411 * Returns:
1a498633 4412 * Zero on success, negative errno on failure.
c8e32cc1 4413 */
f453ba04
DA		 4414int drm_mode_getblob_ioctl(struct drm_device *dev,
4415 void *data, struct drm_file *file_priv)
4416{
f453ba04
DA		 4417 struct drm_mode_get_blob *out_resp = data;
4418 struct drm_property_blob *blob;
4419 int ret = 0;
81f6c7f8 4420 void __user *blob_ptr;
f453ba04 4421
fb3b06c8
DA		 4422 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4423 return -EINVAL;
4424
84849903 4425 drm_modeset_lock_all(dev);
8fb6e7a5 4426 mutex_lock(&dev->mode_config.blob_lock);
6bcacf51 4427 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
a2b34e22 4428 if (!blob) {
f27657f2 4429 ret = -ENOENT;
f453ba04
DA		 4430 goto done;
4431 }
f453ba04
DA		 4432
4433 if (out_resp->length == blob->length) {
81f6c7f8 4434 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4dfd909f 4435 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
f453ba04
DA		 4436 ret = -EFAULT;
4437 goto done;
4438 }
4439 }
4440 out_resp->length = blob->length;
4441
4442done:
8fb6e7a5 4443 mutex_unlock(&dev->mode_config.blob_lock);
84849903 4444 drm_modeset_unlock_all(dev);
f453ba04
DA		 4445 return ret;
4446}
4447
e2f5d2ea
DS		 4448/**
4449 * drm_mode_createblob_ioctl - create a new blob property
4450 * @dev: DRM device
4451 * @data: ioctl data
4452 * @file_priv: DRM file info
4453 *
4454 * This function creates a new blob property with user-defined values. In order
4455 * to give us sensible validation and checking when creating, rather than at
4456 * every potential use, we also require a type to be provided upfront.
4457 *
4458 * Called by the user via ioctl.
4459 *
4460 * Returns:
4461 * Zero on success, negative errno on failure.
4462 */
4463int drm_mode_createblob_ioctl(struct drm_device *dev,
4464 void *data, struct drm_file *file_priv)
4465{
4466 struct drm_mode_create_blob *out_resp = data;
4467 struct drm_property_blob *blob;
4468 void __user *blob_ptr;
4469 int ret = 0;
4470
4471 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4472 return -EINVAL;
4473
4474 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4475 if (IS_ERR(blob))
4476 return PTR_ERR(blob);
4477
4478 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4479 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4480 ret = -EFAULT;
4481 goto out_blob;
4482 }
4483
4484 /* Dropping the lock between create_blob and our access here is safe
4485 * as only the same file_priv can remove the blob; at this point, it is
4486 * not associated with any file_priv. */
4487 mutex_lock(&dev->mode_config.blob_lock);
4488 out_resp->blob_id = blob->base.id;
8731b269 4489 list_add_tail(&blob->head_file, &file_priv->blobs);
e2f5d2ea
DS		 4490 mutex_unlock(&dev->mode_config.blob_lock);
4491
4492 return 0;
4493
4494out_blob:
4495 drm_property_unreference_blob(blob);
4496 return ret;
4497}
4498
4499/**
4500 * drm_mode_destroyblob_ioctl - destroy a user blob property
4501 * @dev: DRM device
4502 * @data: ioctl data
4503 * @file_priv: DRM file info
4504 *
4505 * Destroy an existing user-defined blob property.
4506 *
4507 * Called by the user via ioctl.
4508 *
4509 * Returns:
4510 * Zero on success, negative errno on failure.
4511 */
4512int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4513 void *data, struct drm_file *file_priv)
4514{
4515 struct drm_mode_destroy_blob *out_resp = data;
4516 struct drm_property_blob *blob = NULL, *bt;
4517 bool found = false;
4518 int ret = 0;
4519
4520 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4521 return -EINVAL;
4522
4523 mutex_lock(&dev->mode_config.blob_lock);
4524 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4525 if (!blob) {
4526 ret = -ENOENT;
4527 goto err;
4528 }
4529
4530 /* Ensure the property was actually created by this user. */
4531 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4532 if (bt == blob) {
4533 found = true;
4534 break;
4535 }
4536 }
4537
4538 if (!found) {
4539 ret = -EPERM;
4540 goto err;
4541 }
4542
4543 /* We must drop head_file here, because we may not be the last
4544 * reference on the blob. */
4545 list_del_init(&blob->head_file);
4546 drm_property_unreference_blob_locked(blob);
4547 mutex_unlock(&dev->mode_config.blob_lock);
4548
4549 return 0;
4550
4551err:
4552 mutex_unlock(&dev->mode_config.blob_lock);
4553 return ret;
4554}
4555
cc7096fb
DA		 4556/**
4557 * drm_mode_connector_set_path_property - set tile property on connector
4558 * @connector: connector to set property on.
d2ed3436 4559 * @path: path to use for property; must not be NULL.
cc7096fb
DA		 4560 *
4561 * This creates a property to expose to userspace to specify a
4562 * connector path. This is mainly used for DisplayPort MST where
4563 * connectors have a topology and we want to allow userspace to give
4564 * them more meaningful names.
4565 *
4566 * Returns:
1a498633 4567 * Zero on success, negative errno on failure.
cc7096fb 4568 */
43aba7eb 4569int drm_mode_connector_set_path_property(struct drm_connector *connector,
12e6cecd 4570 const char *path)
43aba7eb
DA		 4571{
4572 struct drm_device *dev = connector->dev;
ecbbe59b 4573 int ret;
43aba7eb 4574
d2ed3436
DS		 4575 ret = drm_property_replace_global_blob(dev,
4576 &connector->path_blob_ptr,
4577 strlen(path) + 1,
4578 path,
4579 &connector->base,
4580 dev->mode_config.path_property);
43aba7eb
DA		 4581 return ret;
4582}
4583EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4584
6f134d7b
DA		 4585/**
4586 * drm_mode_connector_set_tile_property - set tile property on connector
4587 * @connector: connector to set property on.
4588 *
4589 * This looks up the tile information for a connector, and creates a
4590 * property for userspace to parse if it exists. The property is of
4591 * the form of 8 integers using ':' as a separator.
4592 *
4593 * Returns:
4594 * Zero on success, errno on failure.
4595 */
4596int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4597{
4598 struct drm_device *dev = connector->dev;
6f134d7b 4599 char tile[256];
d2ed3436 4600 int ret;
6f134d7b
DA		 4601
4602 if (!connector->has_tile) {
d2ed3436
DS		 4603 ret = drm_property_replace_global_blob(dev,
4604 &connector->tile_blob_ptr,
4605 0,
4606 NULL,
4607 &connector->base,
4608 dev->mode_config.tile_property);
6f134d7b
DA		 4609 return ret;
4610 }
4611
4612 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4613 connector->tile_group->id, connector->tile_is_single_monitor,
4614 connector->num_h_tile, connector->num_v_tile,
4615 connector->tile_h_loc, connector->tile_v_loc,
4616 connector->tile_h_size, connector->tile_v_size);
6f134d7b 4617
d2ed3436
DS		 4618 ret = drm_property_replace_global_blob(dev,
4619 &connector->tile_blob_ptr,
4620 strlen(tile) + 1,
4621 tile,
4622 &connector->base,
4623 dev->mode_config.tile_property);
6f134d7b
DA		 4624 return ret;
4625}
4626EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4627
c8e32cc1
DV		 4628/**
4629 * drm_mode_connector_update_edid_property - update the edid property of a connector
4630 * @connector: drm connector
4631 * @edid: new value of the edid property
4632 *
4633 * This function creates a new blob modeset object and assigns its id to the
4634 * connector's edid property.
4635 *
4636 * Returns:
1a498633 4637 * Zero on success, negative errno on failure.
c8e32cc1 4638 */
f453ba04 4639int drm_mode_connector_update_edid_property(struct drm_connector *connector,
12e6cecd 4640 const struct edid *edid)
f453ba04
DA		 4641{
4642 struct drm_device *dev = connector->dev;
d2ed3436 4643 size_t size = 0;
ecbbe59b 4644 int ret;
f453ba04 4645
4cf2b281
TW		 4646 /* ignore requests to set edid when overridden */
4647 if (connector->override_edid)
4648 return 0;
4649
d2ed3436 4650 if (edid)
e24ff467 4651 size = EDID_LENGTH * (1 + edid->extensions);
f453ba04 4652
d2ed3436
DS		 4653 ret = drm_property_replace_global_blob(dev,
4654 &connector->edid_blob_ptr,
4655 size,
4656 edid,
4657 &connector->base,
4658 dev->mode_config.edid_property);
f453ba04
DA		 4659 return ret;
4660}
4661EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4662
3843e71f
RC		 4663/* Some properties could refer to dynamic refcnt'd objects, or things that
4664 * need special locking to handle lifetime issues (ie. to ensure the prop
4665 * value doesn't become invalid part way through the property update due to
4666 * race). The value returned by reference via 'obj' should be passed back
4667 * to drm_property_change_valid_put() after the property is set (and the
4668 * object to which the property is attached has a chance to take it's own
4669 * reference).
4670 */
d34f20d6 4671bool drm_property_change_valid_get(struct drm_property *property,
3843e71f 4672 uint64_t value, struct drm_mode_object **ref)
26a34815 4673{
2ca651d1
TR		 4674 int i;
4675
26a34815
PZ		 4676 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4677 return false;
5ea22f24 4678
3843e71f
RC		 4679 *ref = NULL;
4680
5ea22f24 4681 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 4682 if (value < property->values[0] || value > property->values[1])
4683 return false;
4684 return true;
ebc44cf3
RC		 4685 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4686 int64_t svalue = U642I64(value);
4dfd909f 4687
ebc44cf3
RC		 4688 if (svalue < U642I64(property->values[0]) ||
4689 svalue > U642I64(property->values[1]))
4690 return false;
4691 return true;
5ea22f24 4692 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
592c20ee 4693 uint64_t valid_mask = 0;
4dfd909f 4694
49e27545
RC		 4695 for (i = 0; i < property->num_values; i++)
4696 valid_mask |= (1ULL << property->values[i]);
4697 return !(value & ~valid_mask);
5ea22f24 4698 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
6bcacf51
DS		 4699 struct drm_property_blob *blob;
4700
4701 if (value == 0)
4702 return true;
4703
4704 blob = drm_property_lookup_blob(property->dev, value);
4705 if (blob) {
4706 *ref = &blob->base;
4707 return true;
4708 } else {
4709 return false;
4710 }
98f75de4 4711 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
98f75de4
RC		 4712 /* a zero value for an object property translates to null: */
4713 if (value == 0)
4714 return true;
3843e71f
RC		 4715
4716 /* handle refcnt'd objects specially: */
4717 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4718 struct drm_framebuffer *fb;
4719 fb = drm_framebuffer_lookup(property->dev, value);
4720 if (fb) {
4721 *ref = &fb->base;
4722 return true;
4723 } else {
4724 return false;
4725 }
4726 } else {
4727 return _object_find(property->dev, value, property->values[0]) != NULL;
4728 }
26a34815 4729 }
2ca651d1
TR		 4730
4731 for (i = 0; i < property->num_values; i++)
4732 if (property->values[i] == value)
4733 return true;
4734 return false;
26a34815
PZ		 4735}
4736
d34f20d6 4737void drm_property_change_valid_put(struct drm_property *property,
3843e71f
RC		 4738 struct drm_mode_object *ref)
4739{
4740 if (!ref)
4741 return;
4742
4743 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4744 if (property->values[0] == DRM_MODE_OBJECT_FB)
4745 drm_framebuffer_unreference(obj_to_fb(ref));
da9b2a38
DS		 4746 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4747 drm_property_unreference_blob(obj_to_blob(ref));
3843e71f
RC		 4748}
4749
c8e32cc1
DV		 4750/**
4751 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4752 * @dev: DRM device
4753 * @data: ioctl data
4754 * @file_priv: DRM file info
4755 *
4756 * This function sets the current value for a connectors's property. It also
4757 * calls into a driver's ->set_property callback to update the hardware state
4758 *
4759 * Called by the user via ioctl.
4760 *
4761 * Returns:
1a498633 4762 * Zero on success, negative errno on failure.
c8e32cc1 4763 */
f453ba04
DA		 4764int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4765 void *data, struct drm_file *file_priv)
4766{
0057d8dd
PZ		 4767 struct drm_mode_connector_set_property *conn_set_prop = data;
4768 struct drm_mode_obj_set_property obj_set_prop = {
4769 .value = conn_set_prop->value,
4770 .prop_id = conn_set_prop->prop_id,
4771 .obj_id = conn_set_prop->connector_id,
4772 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4773 };
fb3b06c8 4774
0057d8dd
PZ		 4775 /* It does all the locking and checking we need */
4776 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 4777}
4778
c543188a
PZ		 4779static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4780 struct drm_property *property,
4781 uint64_t value)
4782{
4783 int ret = -EINVAL;
4784 struct drm_connector *connector = obj_to_connector(obj);
4785
4786 /* Do DPMS ourselves */
4787 if (property == connector->dev->mode_config.dpms_property) {
c543188a 4788 ret = 0;
9a69a9ac
ML		 4789 if (connector->funcs->dpms)
4790 ret = (*connector->funcs->dpms)(connector, (int)value);
c543188a
PZ		 4791 } else if (connector->funcs->set_property)
4792 ret = connector->funcs->set_property(connector, property, value);
4793
4794 /* store the property value if successful */
4795 if (!ret)
58495563 4796 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 4797 return ret;
4798}
4799
bffd9de0
PZ		 4800static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4801 struct drm_property *property,
4802 uint64_t value)
4803{
4804 int ret = -EINVAL;
4805 struct drm_crtc *crtc = obj_to_crtc(obj);
4806
4807 if (crtc->funcs->set_property)
4808 ret = crtc->funcs->set_property(crtc, property, value);
4809 if (!ret)
4810 drm_object_property_set_value(obj, property, value);
4811
4812 return ret;
4813}
4814
3a5f87c2
TW		 4815/**
4816 * drm_mode_plane_set_obj_prop - set the value of a property
4817 * @plane: drm plane object to set property value for
4818 * @property: property to set
4819 * @value: value the property should be set to
4820 *
4821 * This functions sets a given property on a given plane object. This function
4822 * calls the driver's ->set_property callback and changes the software state of
4823 * the property if the callback succeeds.
4824 *
4825 * Returns:
4826 * Zero on success, error code on failure.
4827 */
4828int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4829 struct drm_property *property,
4830 uint64_t value)
4d93914a
RC		 4831{
4832 int ret = -EINVAL;
3a5f87c2 4833 struct drm_mode_object *obj = &plane->base;
4d93914a
RC		 4834
4835 if (plane->funcs->set_property)
4836 ret = plane->funcs->set_property(plane, property, value);
4837 if (!ret)
4838 drm_object_property_set_value(obj, property, value);
4839
4840 return ret;
4841}
3a5f87c2 4842EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4d93914a 4843
c8e32cc1 4844/**
1a498633 4845 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
c8e32cc1
DV		 4846 * @dev: DRM device
4847 * @data: ioctl data
4848 * @file_priv: DRM file info
4849 *
4850 * This function retrieves the current value for an object's property. Compared
4851 * to the connector specific ioctl this one is extended to also work on crtc and
4852 * plane objects.
4853 *
4854 * Called by the user via ioctl.
4855 *
4856 * Returns:
1a498633 4857 * Zero on success, negative errno on failure.
c8e32cc1 4858 */
c543188a
PZ		 4859int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4860 struct drm_file *file_priv)
4861{
4862 struct drm_mode_obj_get_properties *arg = data;
4863 struct drm_mode_object *obj;
4864 int ret = 0;
c543188a
PZ		 4865
4866 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4867 return -EINVAL;
4868
84849903 4869 drm_modeset_lock_all(dev);
c543188a
PZ		 4870
4871 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4872 if (!obj) {
f27657f2 4873 ret = -ENOENT;
c543188a
PZ		 4874 goto out;
4875 }
4876 if (!obj->properties) {
4877 ret = -EINVAL;
4878 goto out;
4879 }
4880
88a48e29 4881 ret = get_properties(obj, file_priv->atomic,
95cbf110
RC		 4882 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4883 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4884 &arg->count_props);
c543188a 4885
c543188a 4886out:
84849903 4887 drm_modeset_unlock_all(dev);
c543188a
PZ		 4888 return ret;
4889}
4890
c8e32cc1
DV		 4891/**
4892 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4893 * @dev: DRM device
4894 * @data: ioctl data
4895 * @file_priv: DRM file info
4896 *
4897 * This function sets the current value for an object's property. It also calls
4898 * into a driver's ->set_property callback to update the hardware state.
4899 * Compared to the connector specific ioctl this one is extended to also work on
4900 * crtc and plane objects.
4901 *
4902 * Called by the user via ioctl.
4903 *
4904 * Returns:
1a498633 4905 * Zero on success, negative errno on failure.
c8e32cc1 4906 */
c543188a
PZ		 4907int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4908 struct drm_file *file_priv)
4909{
4910 struct drm_mode_obj_set_property *arg = data;
4911 struct drm_mode_object *arg_obj;
4912 struct drm_mode_object *prop_obj;
4913 struct drm_property *property;
3843e71f
RC		 4914 int i, ret = -EINVAL;
4915 struct drm_mode_object *ref;
c543188a
PZ		 4916
4917 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4918 return -EINVAL;
4919
84849903 4920 drm_modeset_lock_all(dev);
c543188a
PZ		 4921
4922 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 4923 if (!arg_obj) {
4924 ret = -ENOENT;
c543188a 4925 goto out;
f27657f2 4926 }
c543188a
PZ		 4927 if (!arg_obj->properties)
4928 goto out;
4929
7f88a9be 4930 for (i = 0; i < arg_obj->properties->count; i++)
b17cd757 4931 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
c543188a
PZ		 4932 break;
4933
7f88a9be 4934 if (i == arg_obj->properties->count)
c543188a
PZ		 4935 goto out;
4936
4937 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4938 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 4939 if (!prop_obj) {
4940 ret = -ENOENT;
c543188a 4941 goto out;
f27657f2 4942 }
c543188a
PZ		 4943 property = obj_to_property(prop_obj);
4944
3843e71f 4945 if (!drm_property_change_valid_get(property, arg->value, &ref))
c543188a
PZ		 4946 goto out;
4947
4948 switch (arg_obj->type) {
4949 case DRM_MODE_OBJECT_CONNECTOR:
4950 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4951 arg->value);
4952 break;
bffd9de0
PZ		 4953 case DRM_MODE_OBJECT_CRTC:
4954 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4955 break;
4d93914a 4956 case DRM_MODE_OBJECT_PLANE:
3a5f87c2
TW		 4957 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4958 property, arg->value);
4d93914a 4959 break;
c543188a
PZ		 4960 }
4961
3843e71f
RC		 4962 drm_property_change_valid_put(property, ref);
4963
c543188a 4964out:
84849903 4965 drm_modeset_unlock_all(dev);
c543188a
PZ		 4966 return ret;
4967}
4968
c8e32cc1
DV		 4969/**
4970 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4971 * @connector: connector to attach
4972 * @encoder: encoder to attach @connector to
4973 *
4974 * This function links up a connector to an encoder. Note that the routing
4975 * restrictions between encoders and crtcs are exposed to userspace through the
4976 * possible_clones and possible_crtcs bitmasks.
4977 *
4978 * Returns:
1a498633 4979 * Zero on success, negative errno on failure.
c8e32cc1 4980 */
f453ba04
DA		 4981int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4982 struct drm_encoder *encoder)
4983{
4984 int i;
4985
4986 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4987 if (connector->encoder_ids[i] == 0) {
4988 connector->encoder_ids[i] = encoder->base.id;
4989 return 0;
4990 }
4991 }
4992 return -ENOMEM;
4993}
4994EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4995
c8e32cc1
DV		 4996/**
4997 * drm_mode_crtc_set_gamma_size - set the gamma table size
4998 * @crtc: CRTC to set the gamma table size for
4999 * @gamma_size: size of the gamma table
5000 *
5001 * Drivers which support gamma tables should set this to the supported gamma
5002 * table size when initializing the CRTC. Currently the drm core only supports a
5003 * fixed gamma table size.
5004 *
5005 * Returns:
1a498633 5006 * Zero on success, negative errno on failure.
c8e32cc1 5007 */
4cae5b84 5008int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 5009 int gamma_size)
f453ba04
DA		 5010{
5011 crtc->gamma_size = gamma_size;
5012
bd3f0ff9
TR		 5013 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5014 GFP_KERNEL);
f453ba04
DA		 5015 if (!crtc->gamma_store) {
5016 crtc->gamma_size = 0;
4cae5b84 5017 return -ENOMEM;
f453ba04
DA		 5018 }
5019
4cae5b84 5020 return 0;
f453ba04
DA		 5021}
5022EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5023
c8e32cc1
DV		 5024/**
5025 * drm_mode_gamma_set_ioctl - set the gamma table
5026 * @dev: DRM device
5027 * @data: ioctl data
5028 * @file_priv: DRM file info
5029 *
5030 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5031 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5032 *
5033 * Called by the user via ioctl.
5034 *
5035 * Returns:
1a498633 5036 * Zero on success, negative errno on failure.
c8e32cc1 5037 */
f453ba04
DA		 5038int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5039 void *data, struct drm_file *file_priv)
5040{
5041 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 5042 struct drm_crtc *crtc;
5043 void *r_base, *g_base, *b_base;
5044 int size;
5045 int ret = 0;
5046
fb3b06c8
DA		 5047 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5048 return -EINVAL;
5049
84849903 5050 drm_modeset_lock_all(dev);
a2b34e22
RC		 5051 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5052 if (!crtc) {
f27657f2 5053 ret = -ENOENT;
f453ba04
DA		 5054 goto out;
5055 }
f453ba04 5056
ebe0f244
LP		 5057 if (crtc->funcs->gamma_set == NULL) {
5058 ret = -ENOSYS;
5059 goto out;
5060 }
5061
f453ba04
DA		 5062 /* memcpy into gamma store */
5063 if (crtc_lut->gamma_size != crtc->gamma_size) {
5064 ret = -EINVAL;
5065 goto out;
5066 }
5067
5068 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5069 r_base = crtc->gamma_store;
5070 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5071 ret = -EFAULT;
5072 goto out;
5073 }
5074
5075 g_base = r_base + size;
5076 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5077 ret = -EFAULT;
5078 goto out;
5079 }
5080
5081 b_base = g_base + size;
5082 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5083 ret = -EFAULT;
5084 goto out;
5085 }
5086
7203425a 5087 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 5088
5089out:
84849903 5090 drm_modeset_unlock_all(dev);
f453ba04
DA		 5091 return ret;
5092
5093}
5094
c8e32cc1
DV		 5095/**
5096 * drm_mode_gamma_get_ioctl - get the gamma table
5097 * @dev: DRM device
5098 * @data: ioctl data
5099 * @file_priv: DRM file info
5100 *
5101 * Copy the current gamma table into the storage provided. This also provides
5102 * the gamma table size the driver expects, which can be used to size the
5103 * allocated storage.
5104 *
5105 * Called by the user via ioctl.
5106 *
5107 * Returns:
1a498633 5108 * Zero on success, negative errno on failure.
c8e32cc1 5109 */
f453ba04
DA		 5110int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5111 void *data, struct drm_file *file_priv)
5112{
5113 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 5114 struct drm_crtc *crtc;
5115 void *r_base, *g_base, *b_base;
5116 int size;
5117 int ret = 0;
5118
fb3b06c8
DA		 5119 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5120 return -EINVAL;
5121
84849903 5122 drm_modeset_lock_all(dev);
a2b34e22
RC		 5123 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5124 if (!crtc) {
f27657f2 5125 ret = -ENOENT;
f453ba04
DA		 5126 goto out;
5127 }
f453ba04
DA		 5128
5129 /* memcpy into gamma store */
5130 if (crtc_lut->gamma_size != crtc->gamma_size) {
5131 ret = -EINVAL;
5132 goto out;
5133 }
5134
5135 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5136 r_base = crtc->gamma_store;
5137 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5138 ret = -EFAULT;
5139 goto out;
5140 }
5141
5142 g_base = r_base + size;
5143 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5144 ret = -EFAULT;
5145 goto out;
5146 }
5147
5148 b_base = g_base + size;
5149 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5150 ret = -EFAULT;
5151 goto out;
5152 }
5153out:
84849903 5154 drm_modeset_unlock_all(dev);
f453ba04
DA		 5155 return ret;
5156}
d91d8a3f 5157
c8e32cc1
DV		 5158/**
5159 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5160 * @dev: DRM device
5161 * @data: ioctl data
5162 * @file_priv: DRM file info
5163 *
5164 * This schedules an asynchronous update on a given CRTC, called page flip.
5165 * Optionally a drm event is generated to signal the completion of the event.
5166 * Generic drivers cannot assume that a pageflip with changed framebuffer
5167 * properties (including driver specific metadata like tiling layout) will work,
5168 * but some drivers support e.g. pixel format changes through the pageflip
5169 * ioctl.
5170 *
5171 * Called by the user via ioctl.
5172 *
5173 * Returns:
1a498633 5174 * Zero on success, negative errno on failure.
c8e32cc1 5175 */
d91d8a3f
KH		 5176int drm_mode_page_flip_ioctl(struct drm_device *dev,
5177 void *data, struct drm_file *file_priv)
5178{
5179 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 5180 struct drm_crtc *crtc;
3d30a59b 5181 struct drm_framebuffer *fb = NULL;
d91d8a3f
KH		 5182 struct drm_pending_vblank_event *e = NULL;
5183 unsigned long flags;
5184 int ret = -EINVAL;
5185
5186 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5187 page_flip->reserved != 0)
5188 return -EINVAL;
5189
62f2104f
KP		 5190 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5191 return -EINVAL;
5192
a2b34e22
RC		 5193 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5194 if (!crtc)
f27657f2 5195 return -ENOENT;
d91d8a3f 5196
4d02e2de 5197 drm_modeset_lock_crtc(crtc, crtc->primary);
f4510a27 5198 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 5199 /* The framebuffer is currently unbound, presumably
5200 * due to a hotplug event, that userspace has not
5201 * yet discovered.
5202 */
5203 ret = -EBUSY;
5204 goto out;
5205 }
5206
d91d8a3f
KH		 5207 if (crtc->funcs->page_flip == NULL)
5208 goto out;
5209
786b99ed 5210 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 5211 if (!fb) {
5212 ret = -ENOENT;
d91d8a3f 5213 goto out;
37c4e705 5214 }
d91d8a3f 5215
2afa701d
VS		 5216 if (crtc->state) {
5217 const struct drm_plane_state *state = crtc->primary->state;
5218
5219 ret = check_src_coords(state->src_x, state->src_y,
5220 state->src_w, state->src_h, fb);
5221 } else {
5222 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5223 }
c11e9283 5224 if (ret)
5f61bb42 5225 goto out;
5f61bb42 5226
f4510a27 5227 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 5228 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5229 ret = -EINVAL;
5230 goto out;
5231 }
5232
d91d8a3f
KH		 5233 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5234 ret = -ENOMEM;
5235 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5236 if (file_priv->event_space < sizeof(e->event)) {
d91d8a3f
KH		 5237 spin_unlock_irqrestore(&dev->event_lock, flags);
5238 goto out;
5239 }
f76511b9 5240 file_priv->event_space -= sizeof(e->event);
d91d8a3f
KH		 5241 spin_unlock_irqrestore(&dev->event_lock, flags);
5242
f76511b9 5243 e = kzalloc(sizeof(*e), GFP_KERNEL);
d91d8a3f
KH		 5244 if (e == NULL) {
5245 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5246 file_priv->event_space += sizeof(e->event);
d91d8a3f
KH		 5247 spin_unlock_irqrestore(&dev->event_lock, flags);
5248 goto out;
5249 }
5250
7bd4d7be 5251 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
f76511b9 5252 e->event.base.length = sizeof(e->event);
d91d8a3f
KH		 5253 e->event.user_data = page_flip->user_data;
5254 e->base.event = &e->event.base;
5255 e->base.file_priv = file_priv;
5256 e->base.destroy =
5257 (void (*) (struct drm_pending_event *)) kfree;
5258 }
5259
3d30a59b 5260 crtc->primary->old_fb = crtc->primary->fb;
ed8d1975 5261 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 5262 if (ret) {
aef6a7ee
JS		 5263 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5264 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5265 file_priv->event_space += sizeof(e->event);
aef6a7ee
JS		 5266 spin_unlock_irqrestore(&dev->event_lock, flags);
5267 kfree(e);
5268 }
b0d12325 5269 /* Keep the old fb, don't unref it. */
3d30a59b 5270 crtc->primary->old_fb = NULL;
b0d12325 5271 } else {
3cb43cc0 5272 crtc->primary->fb = fb;
b0d12325
DV		 5273 /* Unref only the old framebuffer. */
5274 fb = NULL;
d91d8a3f
KH		 5275 }
5276
5277out:
b0d12325
DV		 5278 if (fb)
5279 drm_framebuffer_unreference(fb);
3d30a59b
DV		 5280 if (crtc->primary->old_fb)
5281 drm_framebuffer_unreference(crtc->primary->old_fb);
5282 crtc->primary->old_fb = NULL;
d059f652 5283 drm_modeset_unlock_crtc(crtc);
b4d5e7d1 5284
d91d8a3f
KH		 5285 return ret;
5286}
eb033556 5287
c8e32cc1
DV		 5288/**
5289 * drm_mode_config_reset - call ->reset callbacks
5290 * @dev: drm device
5291 *
5292 * This functions calls all the crtc's, encoder's and connector's ->reset
5293 * callback. Drivers can use this in e.g. their driver load or resume code to
5294 * reset hardware and software state.
5295 */
eb033556
CW		 5296void drm_mode_config_reset(struct drm_device *dev)
5297{
5298 struct drm_crtc *crtc;
2a0d7cfd 5299 struct drm_plane *plane;
eb033556
CW		 5300 struct drm_encoder *encoder;
5301 struct drm_connector *connector;
5302
e4f62546 5303 drm_for_each_plane(plane, dev)
2a0d7cfd
DV		 5304 if (plane->funcs->reset)
5305 plane->funcs->reset(plane);
5306
e4f62546 5307 drm_for_each_crtc(crtc, dev)
eb033556
CW		 5308 if (crtc->funcs->reset)
5309 crtc->funcs->reset(crtc);
5310
e4f62546 5311 drm_for_each_encoder(encoder, dev)
eb033556
CW		 5312 if (encoder->funcs->reset)
5313 encoder->funcs->reset(encoder);
5314
f8c2ba31 5315 mutex_lock(&dev->mode_config.mutex);
4eebf60b 5316 drm_for_each_connector(connector, dev)
eb033556
CW		 5317 if (connector->funcs->reset)
5318 connector->funcs->reset(connector);
f8c2ba31 5319 mutex_unlock(&dev->mode_config.mutex);
eb033556
CW		 5320}
5321EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 5322
c8e32cc1
DV		 5323/**
5324 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5325 * @dev: DRM device
5326 * @data: ioctl data
5327 * @file_priv: DRM file info
5328 *
5329 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5330 * TTM or something else entirely) and returns the resulting buffer handle. This
5331 * handle can then be wrapped up into a framebuffer modeset object.
5332 *
5333 * Note that userspace is not allowed to use such objects for render
5334 * acceleration - drivers must create their own private ioctls for such a use
5335 * case.
5336 *
5337 * Called by the user via ioctl.
5338 *
5339 * Returns:
1a498633 5340 * Zero on success, negative errno on failure.
c8e32cc1 5341 */
ff72145b
DA		 5342int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5343 void *data, struct drm_file *file_priv)
5344{
5345 struct drm_mode_create_dumb *args = data;
b28cd41f 5346 u32 cpp, stride, size;
ff72145b
DA		 5347
5348 if (!dev->driver->dumb_create)
5349 return -ENOSYS;
b28cd41f
DH		 5350 if (!args->width || !args->height || !args->bpp)
5351 return -EINVAL;
5352
5353 /* overflow checks for 32bit size calculations */
00e72089 5354 /* NOTE: DIV_ROUND_UP() can overflow */
b28cd41f 5355 cpp = DIV_ROUND_UP(args->bpp, 8);
00e72089 5356 if (!cpp || cpp > 0xffffffffU / args->width)
b28cd41f
DH		 5357 return -EINVAL;
5358 stride = cpp * args->width;
5359 if (args->height > 0xffffffffU / stride)
5360 return -EINVAL;
5361
5362 /* test for wrap-around */
5363 size = args->height * stride;
5364 if (PAGE_ALIGN(size) == 0)
5365 return -EINVAL;
5366
f6085952
TR		 5367 /*
5368 * handle, pitch and size are output parameters. Zero them out to
5369 * prevent drivers from accidentally using uninitialized data. Since
5370 * not all existing userspace is clearing these fields properly we
5371 * cannot reject IOCTL with garbage in them.
5372 */
5373 args->handle = 0;
5374 args->pitch = 0;
5375 args->size = 0;
5376
ff72145b
DA		 5377 return dev->driver->dumb_create(file_priv, dev, args);
5378}
5379
c8e32cc1
DV		 5380/**
5381 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5382 * @dev: DRM device
5383 * @data: ioctl data
5384 * @file_priv: DRM file info
5385 *
5386 * Allocate an offset in the drm device node's address space to be able to
5387 * memory map a dumb buffer.
5388 *
5389 * Called by the user via ioctl.
5390 *
5391 * Returns:
1a498633 5392 * Zero on success, negative errno on failure.
c8e32cc1 5393 */
ff72145b
DA		 5394int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5395 void *data, struct drm_file *file_priv)
5396{
5397 struct drm_mode_map_dumb *args = data;
5398
5399 /* call driver ioctl to get mmap offset */
5400 if (!dev->driver->dumb_map_offset)
5401 return -ENOSYS;
5402
5403 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5404}
5405
c8e32cc1
DV		 5406/**
5407 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5408 * @dev: DRM device
5409 * @data: ioctl data
5410 * @file_priv: DRM file info
5411 *
5412 * This destroys the userspace handle for the given dumb backing storage buffer.
5413 * Since buffer objects must be reference counted in the kernel a buffer object
5414 * won't be immediately freed if a framebuffer modeset object still uses it.
5415 *
5416 * Called by the user via ioctl.
5417 *
5418 * Returns:
1a498633 5419 * Zero on success, negative errno on failure.
c8e32cc1 5420 */
ff72145b
DA		 5421int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5422 void *data, struct drm_file *file_priv)
5423{
5424 struct drm_mode_destroy_dumb *args = data;
5425
5426 if (!dev->driver->dumb_destroy)
5427 return -ENOSYS;
5428
5429 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5430}
248dbc23 5431
c8e32cc1
DV		 5432/**
5433 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5434 * @format: pixel format (DRM_FORMAT_*)
5435 * @depth: storage for the depth value
5436 * @bpp: storage for the bpp value
5437 *
5438 * This only supports RGB formats here for compat with code that doesn't use
5439 * pixel formats directly yet.
248dbc23
DA		 5440 */
5441void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5442 int *bpp)
5443{
5444 switch (format) {
c51a6bc5 5445 case DRM_FORMAT_C8:
04b3924d
VS		 5446 case DRM_FORMAT_RGB332:
5447 case DRM_FORMAT_BGR233:
248dbc23
DA		 5448 *depth = 8;
5449 *bpp = 8;
5450 break;
04b3924d
VS		 5451 case DRM_FORMAT_XRGB1555:
5452 case DRM_FORMAT_XBGR1555:
5453 case DRM_FORMAT_RGBX5551:
5454 case DRM_FORMAT_BGRX5551:
5455 case DRM_FORMAT_ARGB1555:
5456 case DRM_FORMAT_ABGR1555:
5457 case DRM_FORMAT_RGBA5551:
5458 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 5459 *depth = 15;
5460 *bpp = 16;
5461 break;
04b3924d
VS		 5462 case DRM_FORMAT_RGB565:
5463 case DRM_FORMAT_BGR565:
248dbc23
DA		 5464 *depth = 16;
5465 *bpp = 16;
5466 break;
04b3924d
VS		 5467 case DRM_FORMAT_RGB888:
5468 case DRM_FORMAT_BGR888:
5469 *depth = 24;
5470 *bpp = 24;
5471 break;
5472 case DRM_FORMAT_XRGB8888:
5473 case DRM_FORMAT_XBGR8888:
5474 case DRM_FORMAT_RGBX8888:
5475 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 5476 *depth = 24;
5477 *bpp = 32;
5478 break;
04b3924d
VS		 5479 case DRM_FORMAT_XRGB2101010:
5480 case DRM_FORMAT_XBGR2101010:
5481 case DRM_FORMAT_RGBX1010102:
5482 case DRM_FORMAT_BGRX1010102:
5483 case DRM_FORMAT_ARGB2101010:
5484 case DRM_FORMAT_ABGR2101010:
5485 case DRM_FORMAT_RGBA1010102:
5486 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 5487 *depth = 30;
5488 *bpp = 32;
5489 break;
04b3924d
VS		 5490 case DRM_FORMAT_ARGB8888:
5491 case DRM_FORMAT_ABGR8888:
5492 case DRM_FORMAT_RGBA8888:
5493 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 5494 *depth = 32;
5495 *bpp = 32;
5496 break;
5497 default:
23c453a4
VS		 5498 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5499 drm_get_format_name(format));
248dbc23
DA		 5500 *depth = 0;
5501 *bpp = 0;
5502 break;
5503 }
5504}
5505EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 5506
5507/**
5508 * drm_format_num_planes - get the number of planes for format
5509 * @format: pixel format (DRM_FORMAT_*)
5510 *
c8e32cc1 5511 * Returns:
141670e9
VS		 5512 * The number of planes used by the specified pixel format.
5513 */
5514int drm_format_num_planes(uint32_t format)
5515{
5516 switch (format) {
5517 case DRM_FORMAT_YUV410:
5518 case DRM_FORMAT_YVU410:
5519 case DRM_FORMAT_YUV411:
5520 case DRM_FORMAT_YVU411:
5521 case DRM_FORMAT_YUV420:
5522 case DRM_FORMAT_YVU420:
5523 case DRM_FORMAT_YUV422:
5524 case DRM_FORMAT_YVU422:
5525 case DRM_FORMAT_YUV444:
5526 case DRM_FORMAT_YVU444:
5527 return 3;
5528 case DRM_FORMAT_NV12:
5529 case DRM_FORMAT_NV21:
5530 case DRM_FORMAT_NV16:
5531 case DRM_FORMAT_NV61:
ba623f6a
LP		 5532 case DRM_FORMAT_NV24:
5533 case DRM_FORMAT_NV42:
141670e9
VS		 5534 return 2;
5535 default:
5536 return 1;
5537 }
5538}
5539EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 5540
5541/**
5542 * drm_format_plane_cpp - determine the bytes per pixel value
5543 * @format: pixel format (DRM_FORMAT_*)
5544 * @plane: plane index
5545 *
c8e32cc1 5546 * Returns:
5a86bd55
VS		 5547 * The bytes per pixel value for the specified plane.
5548 */
5549int drm_format_plane_cpp(uint32_t format, int plane)
5550{
5551 unsigned int depth;
5552 int bpp;
5553
5554 if (plane >= drm_format_num_planes(format))
5555 return 0;
5556
5557 switch (format) {
5558 case DRM_FORMAT_YUYV:
5559 case DRM_FORMAT_YVYU:
5560 case DRM_FORMAT_UYVY:
5561 case DRM_FORMAT_VYUY:
5562 return 2;
5563 case DRM_FORMAT_NV12:
5564 case DRM_FORMAT_NV21:
5565 case DRM_FORMAT_NV16:
5566 case DRM_FORMAT_NV61:
ba623f6a
LP		 5567 case DRM_FORMAT_NV24:
5568 case DRM_FORMAT_NV42:
5a86bd55
VS		 5569 return plane ? 2 : 1;
5570 case DRM_FORMAT_YUV410:
5571 case DRM_FORMAT_YVU410:
5572 case DRM_FORMAT_YUV411:
5573 case DRM_FORMAT_YVU411:
5574 case DRM_FORMAT_YUV420:
5575 case DRM_FORMAT_YVU420:
5576 case DRM_FORMAT_YUV422:
5577 case DRM_FORMAT_YVU422:
5578 case DRM_FORMAT_YUV444:
5579 case DRM_FORMAT_YVU444:
5580 return 1;
5581 default:
5582 drm_fb_get_bpp_depth(format, &depth, &bpp);
5583 return bpp >> 3;
5584 }
5585}
5586EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 5587
5588/**
5589 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5590 * @format: pixel format (DRM_FORMAT_*)
5591 *
c8e32cc1 5592 * Returns:
01b68b04
VS		 5593 * The horizontal chroma subsampling factor for the
5594 * specified pixel format.
5595 */
5596int drm_format_horz_chroma_subsampling(uint32_t format)
5597{
5598 switch (format) {
5599 case DRM_FORMAT_YUV411:
5600 case DRM_FORMAT_YVU411:
5601 case DRM_FORMAT_YUV410:
5602 case DRM_FORMAT_YVU410:
5603 return 4;
5604 case DRM_FORMAT_YUYV:
5605 case DRM_FORMAT_YVYU:
5606 case DRM_FORMAT_UYVY:
5607 case DRM_FORMAT_VYUY:
5608 case DRM_FORMAT_NV12:
5609 case DRM_FORMAT_NV21:
5610 case DRM_FORMAT_NV16:
5611 case DRM_FORMAT_NV61:
5612 case DRM_FORMAT_YUV422:
5613 case DRM_FORMAT_YVU422:
5614 case DRM_FORMAT_YUV420:
5615 case DRM_FORMAT_YVU420:
5616 return 2;
5617 default:
5618 return 1;
5619 }
5620}
5621EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5622
5623/**
5624 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5625 * @format: pixel format (DRM_FORMAT_*)
5626 *
c8e32cc1 5627 * Returns:
01b68b04
VS		 5628 * The vertical chroma subsampling factor for the
5629 * specified pixel format.
5630 */
5631int drm_format_vert_chroma_subsampling(uint32_t format)
5632{
5633 switch (format) {
5634 case DRM_FORMAT_YUV410:
5635 case DRM_FORMAT_YVU410:
5636 return 4;
5637 case DRM_FORMAT_YUV420:
5638 case DRM_FORMAT_YVU420:
5639 case DRM_FORMAT_NV12:
5640 case DRM_FORMAT_NV21:
5641 return 2;
5642 default:
5643 return 1;
5644 }
5645}
5646EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3 5647
3c9855f6
VS		 5648/**
5649 * drm_rotation_simplify() - Try to simplify the rotation
5650 * @rotation: Rotation to be simplified
5651 * @supported_rotations: Supported rotations
5652 *
5653 * Attempt to simplify the rotation to a form that is supported.
5654 * Eg. if the hardware supports everything except DRM_REFLECT_X
5655 * one could call this function like this:
5656 *
5657 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5658 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5659 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5660 *
5661 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5662 * transforms the hardware supports, this function may not
5663 * be able to produce a supported transform, so the caller should
5664 * check the result afterwards.
5665 */
5666unsigned int drm_rotation_simplify(unsigned int rotation,
5667 unsigned int supported_rotations)
5668{
5669 if (rotation & ~supported_rotations) {
5670 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
14152c8d
JL		 5671 rotation = (rotation & DRM_REFLECT_MASK) |
5672 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
3c9855f6
VS		 5673 }
5674
5675 return rotation;
5676}
5677EXPORT_SYMBOL(drm_rotation_simplify);
5678
87d24fc3
LP		 5679/**
5680 * drm_mode_config_init - initialize DRM mode_configuration structure
5681 * @dev: DRM device
5682 *
5683 * Initialize @dev's mode_config structure, used for tracking the graphics
5684 * configuration of @dev.
5685 *
5686 * Since this initializes the modeset locks, no locking is possible. Which is no
5687 * problem, since this should happen single threaded at init time. It is the
5688 * driver's problem to ensure this guarantee.
5689 *
5690 */
5691void drm_mode_config_init(struct drm_device *dev)
5692{
5693 mutex_init(&dev->mode_config.mutex);
51fd371b 5694 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5695 mutex_init(&dev->mode_config.idr_mutex);
5696 mutex_init(&dev->mode_config.fb_lock);
8fb6e7a5 5697 mutex_init(&dev->mode_config.blob_lock);
87d24fc3
LP		 5698 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5699 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5700 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5701 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5702 INIT_LIST_HEAD(&dev->mode_config.property_list);
5703 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5704 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5705 idr_init(&dev->mode_config.crtc_idr);
138f9ebb 5706 idr_init(&dev->mode_config.tile_idr);
87d24fc3
LP		 5707
5708 drm_modeset_lock_all(dev);
6b4959f4 5709 drm_mode_create_standard_properties(dev);
87d24fc3
LP		 5710 drm_modeset_unlock_all(dev);
5711
5712 /* Just to be sure */
5713 dev->mode_config.num_fb = 0;
5714 dev->mode_config.num_connector = 0;
5715 dev->mode_config.num_crtc = 0;
5716 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 5717 dev->mode_config.num_overlay_plane = 0;
5718 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 5719}
5720EXPORT_SYMBOL(drm_mode_config_init);
5721
5722/**
5723 * drm_mode_config_cleanup - free up DRM mode_config info
5724 * @dev: DRM device
5725 *
5726 * Free up all the connectors and CRTCs associated with this DRM device, then
5727 * free up the framebuffers and associated buffer objects.
5728 *
5729 * Note that since this /should/ happen single-threaded at driver/device
5730 * teardown time, no locking is required. It's the driver's job to ensure that
5731 * this guarantee actually holds true.
5732 *
5733 * FIXME: cleanup any dangling user buffer objects too
5734 */
5735void drm_mode_config_cleanup(struct drm_device *dev)
5736{
5737 struct drm_connector *connector, *ot;
5738 struct drm_crtc *crtc, *ct;
5739 struct drm_encoder *encoder, *enct;
5740 struct drm_framebuffer *fb, *fbt;
5741 struct drm_property *property, *pt;
5742 struct drm_property_blob *blob, *bt;
5743 struct drm_plane *plane, *plt;
5744
5745 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5746 head) {
5747 encoder->funcs->destroy(encoder);
5748 }
5749
5750 list_for_each_entry_safe(connector, ot,
5751 &dev->mode_config.connector_list, head) {
5752 connector->funcs->destroy(connector);
5753 }
5754
5755 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5756 head) {
5757 drm_property_destroy(dev, property);
5758 }
5759
5760 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
e2f5d2ea 5761 head_global) {
6bcacf51 5762 drm_property_unreference_blob(blob);
87d24fc3
LP		 5763 }
5764
5765 /*
5766 * Single-threaded teardown context, so it's not required to grab the
5767 * fb_lock to protect against concurrent fb_list access. Contrary, it
5768 * would actually deadlock with the drm_framebuffer_cleanup function.
5769 *
5770 * Also, if there are any framebuffers left, that's a driver leak now,
5771 * so politely WARN about this.
5772 */
5773 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5774 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
c099b55a 5775 drm_framebuffer_free(&fb->refcount);
87d24fc3
LP		 5776 }
5777
5778 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5779 head) {
5780 plane->funcs->destroy(plane);
5781 }
5782
5783 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5784 crtc->funcs->destroy(crtc);
5785 }
5786
138f9ebb 5787 idr_destroy(&dev->mode_config.tile_idr);
87d24fc3 5788 idr_destroy(&dev->mode_config.crtc_idr);
51fd371b 5789 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5790}
5791EXPORT_SYMBOL(drm_mode_config_cleanup);
c1df5f3c
VS		 5792
5793struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5794 unsigned int supported_rotations)
5795{
5796 static const struct drm_prop_enum_list props[] = {
5797 { DRM_ROTATE_0, "rotate-0" },
5798 { DRM_ROTATE_90, "rotate-90" },
5799 { DRM_ROTATE_180, "rotate-180" },
5800 { DRM_ROTATE_270, "rotate-270" },
5801 { DRM_REFLECT_X, "reflect-x" },
5802 { DRM_REFLECT_Y, "reflect-y" },
5803 };
5804
5805 return drm_property_create_bitmask(dev, 0, "rotation",
5806 props, ARRAY_SIZE(props),
5807 supported_rotations);
5808}
5809EXPORT_SYMBOL(drm_mode_create_rotation_property);
138f9ebb
DA		 5810
5811/**
5812 * DOC: Tile group
5813 *
5814 * Tile groups are used to represent tiled monitors with a unique
5815 * integer identifier. Tiled monitors using DisplayID v1.3 have
5816 * a unique 8-byte handle, we store this in a tile group, so we
5817 * have a common identifier for all tiles in a monitor group.
5818 */
5819static void drm_tile_group_free(struct kref *kref)
5820{
5821 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5822 struct drm_device *dev = tg->dev;
5823 mutex_lock(&dev->mode_config.idr_mutex);
5824 idr_remove(&dev->mode_config.tile_idr, tg->id);
5825 mutex_unlock(&dev->mode_config.idr_mutex);
5826 kfree(tg);
5827}
5828
5829/**
5830 * drm_mode_put_tile_group - drop a reference to a tile group.
5831 * @dev: DRM device
5832 * @tg: tile group to drop reference to.
5833 *
5834 * drop reference to tile group and free if 0.
5835 */
5836void drm_mode_put_tile_group(struct drm_device *dev,
5837 struct drm_tile_group *tg)
5838{
5839 kref_put(&tg->refcount, drm_tile_group_free);
5840}
5841
5842/**
5843 * drm_mode_get_tile_group - get a reference to an existing tile group
5844 * @dev: DRM device
5845 * @topology: 8-bytes unique per monitor.
5846 *
5847 * Use the unique bytes to get a reference to an existing tile group.
5848 *
5849 * RETURNS:
5850 * tile group or NULL if not found.
5851 */
5852struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5853 char topology[8])
5854{
5855 struct drm_tile_group *tg;
5856 int id;
5857 mutex_lock(&dev->mode_config.idr_mutex);
5858 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5859 if (!memcmp(tg->group_data, topology, 8)) {
5860 if (!kref_get_unless_zero(&tg->refcount))
5861 tg = NULL;
5862 mutex_unlock(&dev->mode_config.idr_mutex);
5863 return tg;
5864 }
5865 }
5866 mutex_unlock(&dev->mode_config.idr_mutex);
5867 return NULL;
5868}
81ddd1bc 5869EXPORT_SYMBOL(drm_mode_get_tile_group);
138f9ebb
DA		 5870
5871/**
5872 * drm_mode_create_tile_group - create a tile group from a displayid description
5873 * @dev: DRM device
5874 * @topology: 8-bytes unique per monitor.
5875 *
5876 * Create a tile group for the unique monitor, and get a unique
5877 * identifier for the tile group.
5878 *
5879 * RETURNS:
5880 * new tile group or error.
5881 */
5882struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5883 char topology[8])
5884{
5885 struct drm_tile_group *tg;
5886 int ret;
5887
5888 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5889 if (!tg)
5890 return ERR_PTR(-ENOMEM);
5891
5892 kref_init(&tg->refcount);
5893 memcpy(tg->group_data, topology, 8);
5894 tg->dev = dev;
5895
5896 mutex_lock(&dev->mode_config.idr_mutex);
5897 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5898 if (ret >= 0) {
5899 tg->id = ret;
5900 } else {
5901 kfree(tg);
5902 tg = ERR_PTR(ret);
5903 }
5904
5905 mutex_unlock(&dev->mode_config.idr_mutex);
5906 return tg;
5907}
81ddd1bc 5908EXPORT_SYMBOL(drm_mode_create_tile_group);
Linux kernel - Deliverables
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