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Merge tag 'armsoc-arm64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[deliverable/linux.git] / drivers / gpu / drm / drm_crtc.c
CommitLineData
f453ba04
DA		 1/*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
6ba6d03e 32#include <linux/ctype.h>
f453ba04 33#include <linux/list.h>
5a0e3ad6 34#include <linux/slab.h>
2d1a8a48 35#include <linux/export.h>
760285e7
DH		 36#include <drm/drmP.h>
37#include <drm/drm_crtc.h>
38#include <drm/drm_edid.h>
39#include <drm/drm_fourcc.h>
51fd371b 40#include <drm/drm_modeset_lock.h>
88a48e29 41#include <drm/drm_atomic.h>
f453ba04 42
8bd441b2 43#include "drm_crtc_internal.h"
67d0ec4e 44#include "drm_internal.h"
8bd441b2 45
9a6f5130
CW		 46static struct drm_framebuffer *
47internal_framebuffer_create(struct drm_device *dev,
1eb83451 48 const struct drm_mode_fb_cmd2 *r,
9a6f5130 49 struct drm_file *file_priv);
c394c2b0 50
f453ba04
DA		 51/* Avoid boilerplate. I'm tired of typing. */
52#define DRM_ENUM_NAME_FN(fnname, list) \
d20d3174 53 const char *fnname(int val) \
f453ba04
DA		 54 { \
55 int i; \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
59 } \
60 return "(unknown)"; \
61 }
62
63/*
64 * Global properties
65 */
4dfd909f
TR		 66static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
67 { DRM_MODE_DPMS_ON, "On" },
f453ba04
DA		 68 { DRM_MODE_DPMS_STANDBY, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
70 { DRM_MODE_DPMS_OFF, "Off" }
71};
72
73DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
74
4dfd909f 75static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
9922ab5a
RC		 76 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
79};
80
f453ba04
DA		 81/*
82 * Optional properties
83 */
4dfd909f 84static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
53bd8389
JB		 85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 89};
90
ff587e45
VK		 91static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
95};
96
f453ba04
DA		 97/*
98 * Non-global properties, but "required" for certain connectors.
99 */
4dfd909f 100static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
f453ba04
DA		 101 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
104};
105
106DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
107
4dfd909f 108static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
f453ba04
DA		 109 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
112};
113
114DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
115 drm_dvi_i_subconnector_enum_list)
116
4dfd909f 117static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
f453ba04
DA		 118 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 123};
124
125DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
126
4dfd909f 127static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
f453ba04
DA		 128 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 132 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 133};
134
135DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
136 drm_tv_subconnector_enum_list)
137
d20d3174 138static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
884840aa
JB		 139 { DRM_MODE_DIRTY_OFF, "Off" },
140 { DRM_MODE_DIRTY_ON, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
142};
143
f453ba04
DA		 144struct drm_conn_prop_enum_list {
145 int type;
d20d3174 146 const char *name;
b21e3afe 147 struct ida ida;
f453ba04
DA		 148};
149
150/*
151 * Connector and encoder types.
152 */
4dfd909f
TR		 153static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
154 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
b21e3afe
IM		 155 { DRM_MODE_CONNECTOR_VGA, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV, "TV" },
168 { DRM_MODE_CONNECTOR_eDP, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
b8923273 170 { DRM_MODE_CONNECTOR_DSI, "DSI" },
f453ba04
DA		 171};
172
4dfd909f
TR		 173static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
174 { DRM_MODE_ENCODER_NONE, "None" },
f453ba04
DA		 175 { DRM_MODE_ENCODER_DAC, "DAC" },
176 { DRM_MODE_ENCODER_TMDS, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 179 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
b8923273 180 { DRM_MODE_ENCODER_DSI, "DSI" },
182407a6 181 { DRM_MODE_ENCODER_DPMST, "DP MST" },
f453ba04
DA		 182};
183
4dfd909f 184static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
ac1bb36c
JB		 185 { SubPixelUnknown, "Unknown" },
186 { SubPixelHorizontalRGB, "Horizontal RGB" },
187 { SubPixelHorizontalBGR, "Horizontal BGR" },
188 { SubPixelVerticalRGB, "Vertical RGB" },
189 { SubPixelVerticalBGR, "Vertical BGR" },
190 { SubPixelNone, "None" },
191};
192
b21e3afe
IM		 193void drm_connector_ida_init(void)
194{
195 int i;
196
197 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
198 ida_init(&drm_connector_enum_list[i].ida);
199}
200
201void drm_connector_ida_destroy(void)
202{
203 int i;
204
205 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
206 ida_destroy(&drm_connector_enum_list[i].ida);
207}
208
c8e32cc1
DV		 209/**
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
212 *
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
215 */
d20d3174 216const char *drm_get_connector_status_name(enum drm_connector_status status)
f453ba04
DA		 217{
218 if (status == connector_status_connected)
219 return "connected";
220 else if (status == connector_status_disconnected)
221 return "disconnected";
222 else
223 return "unknown";
224}
ed7951dc 225EXPORT_SYMBOL(drm_get_connector_status_name);
f453ba04 226
ac1bb36c
JB		 227/**
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
230 *
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
233 */
234const char *drm_get_subpixel_order_name(enum subpixel_order order)
235{
236 return drm_subpixel_enum_list[order].name;
237}
238EXPORT_SYMBOL(drm_get_subpixel_order_name);
239
6ba6d03e
VS		 240static char printable_char(int c)
241{
242 return isascii(c) && isprint(c) ? c : '?';
243}
244
c8e32cc1
DV		 245/**
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
248 *
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
251 *
252 * FIXME: This isn't really multithreading safe.
253 */
d20d3174 254const char *drm_get_format_name(uint32_t format)
6ba6d03e
VS		 255{
256 static char buf[32];
257
258 snprintf(buf, sizeof(buf),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format & 0xff),
261 printable_char((format >> 8) & 0xff),
262 printable_char((format >> 16) & 0xff),
263 printable_char((format >> 24) & 0x7f),
264 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
265 format);
266
267 return buf;
268}
269EXPORT_SYMBOL(drm_get_format_name);
270
2ee39452
DA		 271/*
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
274 */
275static int drm_mode_object_get_reg(struct drm_device *dev,
276 struct drm_mode_object *obj,
277 uint32_t obj_type,
278 bool register_obj)
279{
280 int ret;
281
282 mutex_lock(&dev->mode_config.idr_mutex);
283 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
284 if (ret >= 0) {
285 /*
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
288 */
289 obj->id = ret;
290 obj->type = obj_type;
291 }
292 mutex_unlock(&dev->mode_config.idr_mutex);
293
294 return ret < 0 ? ret : 0;
295}
296
f453ba04 297/**
065a50ed 298 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 299 * @dev: DRM device
065a50ed
DV		 300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
f453ba04 302 *
f453ba04 303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
c8e32cc1
DV		 304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
f453ba04 307 *
c8e32cc1 308 * Returns:
3c67d839 309 * Zero on success, error code on failure.
f453ba04 310 */
8bd441b2
DV		 311int drm_mode_object_get(struct drm_device *dev,
312 struct drm_mode_object *obj, uint32_t obj_type)
f453ba04 313{
2ee39452
DA		 314 return drm_mode_object_get_reg(dev, obj, obj_type, true);
315}
f453ba04 316
2ee39452
DA		 317static void drm_mode_object_register(struct drm_device *dev,
318 struct drm_mode_object *obj)
319{
ad2563c2 320 mutex_lock(&dev->mode_config.idr_mutex);
2ee39452 321 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
ad2563c2 322 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 323}
324
325/**
065a50ed 326 * drm_mode_object_put - free a modeset identifer
f453ba04 327 * @dev: DRM device
065a50ed 328 * @object: object to free
f453ba04 329 *
c8e32cc1
DV		 330 * Free @id from @dev's unique identifier pool. Note that despite the _get
331 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
332 * for reference counted modeset objects like framebuffers.
f453ba04 333 */
8bd441b2
DV		 334void drm_mode_object_put(struct drm_device *dev,
335 struct drm_mode_object *object)
f453ba04 336{
ad2563c2 337 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 338 idr_remove(&dev->mode_config.crtc_idr, object->id);
ad2563c2 339 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 340}
341
98f75de4
RC		 342static struct drm_mode_object *_object_find(struct drm_device *dev,
343 uint32_t id, uint32_t type)
344{
345 struct drm_mode_object *obj = NULL;
346
347 mutex_lock(&dev->mode_config.idr_mutex);
348 obj = idr_find(&dev->mode_config.crtc_idr, id);
168c02ec
DV		 349 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
350 obj = NULL;
351 if (obj && obj->id != id)
352 obj = NULL;
353 /* don't leak out unref'd fb's */
6bcacf51
DS		 354 if (obj &&
355 (obj->type == DRM_MODE_OBJECT_FB ||
356 obj->type == DRM_MODE_OBJECT_BLOB))
98f75de4
RC		 357 obj = NULL;
358 mutex_unlock(&dev->mode_config.idr_mutex);
359
360 return obj;
361}
362
786b99ed
DV		 363/**
364 * drm_mode_object_find - look up a drm object with static lifetime
365 * @dev: drm device
366 * @id: id of the mode object
367 * @type: type of the mode object
368 *
369 * Note that framebuffers cannot be looked up with this functions - since those
98f75de4
RC		 370 * are reference counted, they need special treatment. Even with
371 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
372 * rather than WARN_ON()).
786b99ed 373 */
7a9c9060
DV		 374struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
375 uint32_t id, uint32_t type)
f453ba04 376{
ad2563c2 377 struct drm_mode_object *obj = NULL;
f453ba04 378
786b99ed
DV		 379 /* Framebuffers are reference counted and need their own lookup
380 * function.*/
6bcacf51 381 WARN_ON(type == DRM_MODE_OBJECT_FB || type == DRM_MODE_OBJECT_BLOB);
98f75de4 382 obj = _object_find(dev, id, type);
f453ba04
DA		 383 return obj;
384}
385EXPORT_SYMBOL(drm_mode_object_find);
386
f453ba04
DA		 387/**
388 * drm_framebuffer_init - initialize a framebuffer
389 * @dev: DRM device
065a50ed
DV		 390 * @fb: framebuffer to be initialized
391 * @funcs: ... with these functions
f453ba04 392 *
f453ba04
DA		 393 * Allocates an ID for the framebuffer's parent mode object, sets its mode
394 * functions & device file and adds it to the master fd list.
395 *
4b096ac1
DV		 396 * IMPORTANT:
397 * This functions publishes the fb and makes it available for concurrent access
398 * by other users. Which means by this point the fb _must_ be fully set up -
399 * since all the fb attributes are invariant over its lifetime, no further
400 * locking but only correct reference counting is required.
401 *
c8e32cc1 402 * Returns:
af901ca1 403 * Zero on success, error code on failure.
f453ba04
DA		 404 */
405int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
406 const struct drm_framebuffer_funcs *funcs)
407{
408 int ret;
409
4b096ac1 410 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e 411 kref_init(&fb->refcount);
4b096ac1
DV		 412 INIT_LIST_HEAD(&fb->filp_head);
413 fb->dev = dev;
414 fb->funcs = funcs;
f7eff60e 415
f453ba04 416 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
6bfc56aa 417 if (ret)
4b096ac1 418 goto out;
f453ba04 419
f453ba04
DA		 420 dev->mode_config.num_fb++;
421 list_add(&fb->head, &dev->mode_config.fb_list);
4b096ac1
DV		 422out:
423 mutex_unlock(&dev->mode_config.fb_lock);
f453ba04 424
3c67d839 425 return ret;
f453ba04
DA		 426}
427EXPORT_SYMBOL(drm_framebuffer_init);
428
83f45fc3
DV		 429/* dev->mode_config.fb_lock must be held! */
430static void __drm_framebuffer_unregister(struct drm_device *dev,
431 struct drm_framebuffer *fb)
432{
433 mutex_lock(&dev->mode_config.idr_mutex);
434 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
435 mutex_unlock(&dev->mode_config.idr_mutex);
436
437 fb->base.id = 0;
438}
439
f7eff60e
RC		 440static void drm_framebuffer_free(struct kref *kref)
441{
442 struct drm_framebuffer *fb =
443 container_of(kref, struct drm_framebuffer, refcount);
83f45fc3
DV		 444 struct drm_device *dev = fb->dev;
445
446 /*
447 * The lookup idr holds a weak reference, which has not necessarily been
448 * removed at this point. Check for that.
449 */
450 mutex_lock(&dev->mode_config.fb_lock);
451 if (fb->base.id) {
452 /* Mark fb as reaped and drop idr ref. */
453 __drm_framebuffer_unregister(dev, fb);
454 }
455 mutex_unlock(&dev->mode_config.fb_lock);
456
f7eff60e
RC		 457 fb->funcs->destroy(fb);
458}
459
2b677e8c
DV		 460static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
461 uint32_t id)
462{
463 struct drm_mode_object *obj = NULL;
464 struct drm_framebuffer *fb;
465
466 mutex_lock(&dev->mode_config.idr_mutex);
467 obj = idr_find(&dev->mode_config.crtc_idr, id);
468 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
469 fb = NULL;
470 else
471 fb = obj_to_fb(obj);
472 mutex_unlock(&dev->mode_config.idr_mutex);
473
474 return fb;
475}
476
786b99ed
DV		 477/**
478 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
479 * @dev: drm device
480 * @id: id of the fb object
481 *
482 * If successful, this grabs an additional reference to the framebuffer -
483 * callers need to make sure to eventually unreference the returned framebuffer
c8e32cc1 484 * again, using @drm_framebuffer_unreference.
786b99ed
DV		 485 */
486struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
487 uint32_t id)
488{
786b99ed
DV		 489 struct drm_framebuffer *fb;
490
491 mutex_lock(&dev->mode_config.fb_lock);
2b677e8c 492 fb = __drm_framebuffer_lookup(dev, id);
83f45fc3
DV		 493 if (fb) {
494 if (!kref_get_unless_zero(&fb->refcount))
495 fb = NULL;
496 }
786b99ed
DV		 497 mutex_unlock(&dev->mode_config.fb_lock);
498
499 return fb;
500}
501EXPORT_SYMBOL(drm_framebuffer_lookup);
502
f7eff60e
RC		 503/**
504 * drm_framebuffer_unreference - unref a framebuffer
065a50ed
DV		 505 * @fb: framebuffer to unref
506 *
507 * This functions decrements the fb's refcount and frees it if it drops to zero.
f7eff60e
RC		 508 */
509void drm_framebuffer_unreference(struct drm_framebuffer *fb)
510{
8291272a 511 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 512 kref_put(&fb->refcount, drm_framebuffer_free);
513}
514EXPORT_SYMBOL(drm_framebuffer_unreference);
515
516/**
517 * drm_framebuffer_reference - incr the fb refcnt
065a50ed 518 * @fb: framebuffer
c8e32cc1
DV		 519 *
520 * This functions increments the fb's refcount.
f7eff60e
RC		 521 */
522void drm_framebuffer_reference(struct drm_framebuffer *fb)
523{
8291272a 524 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 525 kref_get(&fb->refcount);
526}
527EXPORT_SYMBOL(drm_framebuffer_reference);
528
36206361
DV		 529/**
530 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
531 * @fb: fb to unregister
532 *
533 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
534 * those used for fbdev. Note that the caller must hold a reference of it's own,
535 * i.e. the object may not be destroyed through this call (since it'll lead to a
536 * locking inversion).
537 */
538void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
539{
a39a357c
DV		 540 struct drm_device *dev;
541
542 if (!fb)
543 return;
544
545 dev = fb->dev;
2b677e8c
DV		 546
547 mutex_lock(&dev->mode_config.fb_lock);
548 /* Mark fb as reaped and drop idr ref. */
549 __drm_framebuffer_unregister(dev, fb);
550 mutex_unlock(&dev->mode_config.fb_lock);
36206361
DV		 551}
552EXPORT_SYMBOL(drm_framebuffer_unregister_private);
553
f453ba04
DA		 554/**
555 * drm_framebuffer_cleanup - remove a framebuffer object
556 * @fb: framebuffer to remove
557 *
c8e32cc1
DV		 558 * Cleanup framebuffer. This function is intended to be used from the drivers
559 * ->destroy callback. It can also be used to clean up driver private
560 * framebuffers embedded into a larger structure.
36206361
DV		 561 *
562 * Note that this function does not remove the fb from active usuage - if it is
563 * still used anywhere, hilarity can ensue since userspace could call getfb on
564 * the id and get back -EINVAL. Obviously no concern at driver unload time.
565 *
566 * Also, the framebuffer will not be removed from the lookup idr - for
567 * user-created framebuffers this will happen in in the rmfb ioctl. For
568 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
569 * drm_framebuffer_unregister_private.
f453ba04
DA		 570 */
571void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
f7eff60e
RC		 572{
573 struct drm_device *dev = fb->dev;
8faf6b18 574
4b096ac1 575 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e
RC		 576 list_del(&fb->head);
577 dev->mode_config.num_fb--;
4b096ac1 578 mutex_unlock(&dev->mode_config.fb_lock);
f7eff60e
RC		 579}
580EXPORT_SYMBOL(drm_framebuffer_cleanup);
581
582/**
583 * drm_framebuffer_remove - remove and unreference a framebuffer object
584 * @fb: framebuffer to remove
585 *
f7eff60e 586 * Scans all the CRTCs and planes in @dev's mode_config. If they're
36206361 587 * using @fb, removes it, setting it to NULL. Then drops the reference to the
b62584e3
DV		 588 * passed-in framebuffer. Might take the modeset locks.
589 *
590 * Note that this function optimizes the cleanup away if the caller holds the
591 * last reference to the framebuffer. It is also guaranteed to not take the
592 * modeset locks in this case.
f7eff60e
RC		 593 */
594void drm_framebuffer_remove(struct drm_framebuffer *fb)
f453ba04 595{
a39a357c 596 struct drm_device *dev;
f453ba04 597 struct drm_crtc *crtc;
8cf5c917 598 struct drm_plane *plane;
5ef5f72f
DA		 599 struct drm_mode_set set;
600 int ret;
f453ba04 601
a39a357c
DV		 602 if (!fb)
603 return;
604
605 dev = fb->dev;
606
4b096ac1 607 WARN_ON(!list_empty(&fb->filp_head));
8faf6b18 608
b62584e3
DV		 609 /*
610 * drm ABI mandates that we remove any deleted framebuffers from active
611 * useage. But since most sane clients only remove framebuffers they no
612 * longer need, try to optimize this away.
613 *
614 * Since we're holding a reference ourselves, observing a refcount of 1
615 * means that we're the last holder and can skip it. Also, the refcount
616 * can never increase from 1 again, so we don't need any barriers or
617 * locks.
618 *
619 * Note that userspace could try to race with use and instate a new
620 * usage _after_ we've cleared all current ones. End result will be an
621 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
622 * in this manner.
623 */
624 if (atomic_read(&fb->refcount.refcount) > 1) {
625 drm_modeset_lock_all(dev);
626 /* remove from any CRTC */
6295d607 627 drm_for_each_crtc(crtc, dev) {
f4510a27 628 if (crtc->primary->fb == fb) {
b62584e3
DV		 629 /* should turn off the crtc */
630 memset(&set, 0, sizeof(struct drm_mode_set));
631 set.crtc = crtc;
632 set.fb = NULL;
633 ret = drm_mode_set_config_internal(&set);
634 if (ret)
635 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
636 }
5ef5f72f 637 }
f453ba04 638
6295d607 639 drm_for_each_plane(plane, dev) {
9125e618
VS		 640 if (plane->fb == fb)
641 drm_plane_force_disable(plane);
8cf5c917 642 }
b62584e3 643 drm_modeset_unlock_all(dev);
8cf5c917
JB		 644 }
645
f7eff60e 646 drm_framebuffer_unreference(fb);
f453ba04 647}
f7eff60e 648EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04 649
51fd371b
RC		 650DEFINE_WW_CLASS(crtc_ww_class);
651
fa3ab4c2
VS		 652static unsigned int drm_num_crtcs(struct drm_device *dev)
653{
654 unsigned int num = 0;
655 struct drm_crtc *tmp;
656
657 drm_for_each_crtc(tmp, dev) {
658 num++;
659 }
660
661 return num;
662}
663
f453ba04 664/**
e13161af
MR		 665 * drm_crtc_init_with_planes - Initialise a new CRTC object with
666 * specified primary and cursor planes.
f453ba04
DA		 667 * @dev: DRM device
668 * @crtc: CRTC object to init
e13161af
MR		 669 * @primary: Primary plane for CRTC
670 * @cursor: Cursor plane for CRTC
f453ba04 671 * @funcs: callbacks for the new CRTC
f9882876 672 * @name: printf style format string for the CRTC name, or NULL for default name
f453ba04 673 *
ad6f5c34 674 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 675 *
c8e32cc1 676 * Returns:
6bfc56aa 677 * Zero on success, error code on failure.
f453ba04 678 */
e13161af
MR		 679int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
680 struct drm_plane *primary,
fc1d3e44 681 struct drm_plane *cursor,
f9882876
VS		 682 const struct drm_crtc_funcs *funcs,
683 const char *name, ...)
f453ba04 684{
51fd371b 685 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 686 int ret;
687
522cf91f
BG		 688 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
689 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
690
f453ba04
DA		 691 crtc->dev = dev;
692 crtc->funcs = funcs;
693
51fd371b 694 drm_modeset_lock_init(&crtc->mutex);
6bfc56aa
VS		 695 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
696 if (ret)
baf698b0 697 return ret;
f453ba04 698
fa3ab4c2
VS		 699 if (name) {
700 va_list ap;
701
702 va_start(ap, name);
703 crtc->name = kvasprintf(GFP_KERNEL, name, ap);
704 va_end(ap);
705 } else {
706 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
707 drm_num_crtcs(dev));
708 }
709 if (!crtc->name) {
710 drm_mode_object_put(dev, &crtc->base);
711 return -ENOMEM;
712 }
713
bffd9de0
PZ		 714 crtc->base.properties = &crtc->properties;
715
51fd371b
RC		 716 list_add_tail(&crtc->head, &config->crtc_list);
717 config->num_crtc++;
6bfc56aa 718
e13161af 719 crtc->primary = primary;
fc1d3e44 720 crtc->cursor = cursor;
e13161af
MR		 721 if (primary)
722 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
fc1d3e44
MR		 723 if (cursor)
724 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
e13161af 725
eab3bbef
DV		 726 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
727 drm_object_attach_property(&crtc->base, config->prop_active, 0);
955f3c33 728 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
eab3bbef
DV		 729 }
730
baf698b0 731 return 0;
f453ba04 732}
e13161af 733EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 734
735/**
ad6f5c34 736 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 737 * @crtc: CRTC to cleanup
738 *
ad6f5c34
VS		 739 * This function cleans up @crtc and removes it from the DRM mode setting
740 * core. Note that the function does *not* free the crtc structure itself,
741 * this is the responsibility of the caller.
f453ba04
DA		 742 */
743void drm_crtc_cleanup(struct drm_crtc *crtc)
744{
745 struct drm_device *dev = crtc->dev;
746
9e1c156f
SK		 747 kfree(crtc->gamma_store);
748 crtc->gamma_store = NULL;
f453ba04 749
51fd371b
RC		 750 drm_modeset_lock_fini(&crtc->mutex);
751
f453ba04
DA		 752 drm_mode_object_put(dev, &crtc->base);
753 list_del(&crtc->head);
754 dev->mode_config.num_crtc--;
3009c037
TR		 755
756 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
757 if (crtc->state && crtc->funcs->atomic_destroy_state)
758 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
a18c0af1 759
fa3ab4c2
VS		 760 kfree(crtc->name);
761
a18c0af1 762 memset(crtc, 0, sizeof(*crtc));
f453ba04
DA		 763}
764EXPORT_SYMBOL(drm_crtc_cleanup);
765
db5f7a6e
RK		 766/**
767 * drm_crtc_index - find the index of a registered CRTC
768 * @crtc: CRTC to find index for
769 *
770 * Given a registered CRTC, return the index of that CRTC within a DRM
771 * device's list of CRTCs.
772 */
773unsigned int drm_crtc_index(struct drm_crtc *crtc)
774{
775 unsigned int index = 0;
776 struct drm_crtc *tmp;
777
e4f62546 778 drm_for_each_crtc(tmp, crtc->dev) {
db5f7a6e
RK		 779 if (tmp == crtc)
780 return index;
781
782 index++;
783 }
784
785 BUG();
786}
787EXPORT_SYMBOL(drm_crtc_index);
788
86f422d5 789/*
f453ba04
DA		 790 * drm_mode_remove - remove and free a mode
791 * @connector: connector list to modify
792 * @mode: mode to remove
793 *
f453ba04
DA		 794 * Remove @mode from @connector's mode list, then free it.
795 */
86f422d5
LD		 796static void drm_mode_remove(struct drm_connector *connector,
797 struct drm_display_mode *mode)
f453ba04
DA		 798{
799 list_del(&mode->head);
554f1d78 800 drm_mode_destroy(connector->dev, mode);
f453ba04 801}
f453ba04 802
b5571e9d
BB		 803/**
804 * drm_display_info_set_bus_formats - set the supported bus formats
805 * @info: display info to store bus formats in
e37bfa1a
BB		 806 * @formats: array containing the supported bus formats
807 * @num_formats: the number of entries in the fmts array
b5571e9d
BB		 808 *
809 * Store the supported bus formats in display info structure.
810 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
811 * a full list of available formats.
812 */
813int drm_display_info_set_bus_formats(struct drm_display_info *info,
814 const u32 *formats,
815 unsigned int num_formats)
816{
817 u32 *fmts = NULL;
818
819 if (!formats && num_formats)
820 return -EINVAL;
821
822 if (formats && num_formats) {
823 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
824 GFP_KERNEL);
944579c5 825 if (!fmts)
b5571e9d
BB		 826 return -ENOMEM;
827 }
828
829 kfree(info->bus_formats);
830 info->bus_formats = fmts;
831 info->num_bus_formats = num_formats;
832
833 return 0;
834}
835EXPORT_SYMBOL(drm_display_info_set_bus_formats);
836
eaf99c74
CW		 837/**
838 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
839 * @connector: connector to quwery
eaf99c74
CW		 840 *
841 * The kernel supports per-connector configration of its consoles through
842 * use of the video= parameter. This function parses that option and
843 * extracts the user's specified mode (or enable/disable status) for a
844 * particular connector. This is typically only used during the early fbdev
845 * setup.
846 */
847static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
848{
849 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
850 char *option = NULL;
851
852 if (fb_get_options(connector->name, &option))
853 return;
854
855 if (!drm_mode_parse_command_line_for_connector(option,
856 connector,
857 mode))
858 return;
859
860 if (mode->force) {
861 const char *s;
862
863 switch (mode->force) {
864 case DRM_FORCE_OFF:
865 s = "OFF";
866 break;
867 case DRM_FORCE_ON_DIGITAL:
868 s = "ON - dig";
869 break;
870 default:
871 case DRM_FORCE_ON:
872 s = "ON";
873 break;
874 }
875
876 DRM_INFO("forcing %s connector %s\n", connector->name, s);
877 connector->force = mode->force;
878 }
879
880 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
881 connector->name,
882 mode->xres, mode->yres,
883 mode->refresh_specified ? mode->refresh : 60,
884 mode->rb ? " reduced blanking" : "",
885 mode->margins ? " with margins" : "",
886 mode->interlace ? " interlaced" : "");
887}
888
f453ba04
DA		 889/**
890 * drm_connector_init - Init a preallocated connector
891 * @dev: DRM device
892 * @connector: the connector to init
893 * @funcs: callbacks for this connector
065a50ed 894 * @connector_type: user visible type of the connector
f453ba04 895 *
f453ba04
DA		 896 * Initialises a preallocated connector. Connectors should be
897 * subclassed as part of driver connector objects.
6bfc56aa 898 *
c8e32cc1 899 * Returns:
6bfc56aa 900 * Zero on success, error code on failure.
f453ba04 901 */
6bfc56aa
VS		 902int drm_connector_init(struct drm_device *dev,
903 struct drm_connector *connector,
904 const struct drm_connector_funcs *funcs,
905 int connector_type)
f453ba04 906{
ae16c597 907 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa 908 int ret;
b21e3afe
IM		 909 struct ida *connector_ida =
910 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 911
84849903 912 drm_modeset_lock_all(dev);
f453ba04 913
2ee39452 914 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
6bfc56aa 915 if (ret)
2abdd313 916 goto out_unlock;
6bfc56aa 917
7e3bdf4a 918 connector->base.properties = &connector->properties;
f453ba04
DA		 919 connector->dev = dev;
920 connector->funcs = funcs;
5fff80bb
ML		 921
922 connector->connector_id = ida_simple_get(&config->connector_ida, 0, 0, GFP_KERNEL);
923 if (connector->connector_id < 0) {
924 ret = connector->connector_id;
925 goto out_put;
926 }
927
f453ba04
DA		 928 connector->connector_type = connector_type;
929 connector->connector_type_id =
b21e3afe
IM		 930 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
931 if (connector->connector_type_id < 0) {
932 ret = connector->connector_type_id;
5fff80bb 933 goto out_put_id;
b21e3afe 934 }
2abdd313
JN		 935 connector->name =
936 kasprintf(GFP_KERNEL, "%s-%d",
937 drm_connector_enum_list[connector_type].name,
938 connector->connector_type_id);
939 if (!connector->name) {
940 ret = -ENOMEM;
5fff80bb 941 goto out_put_type_id;
2abdd313
JN		 942 }
943
f453ba04
DA		 944 INIT_LIST_HEAD(&connector->probed_modes);
945 INIT_LIST_HEAD(&connector->modes);
946 connector->edid_blob_ptr = NULL;
5e2cb2f6 947 connector->status = connector_status_unknown;
f453ba04 948
eaf99c74
CW		 949 drm_connector_get_cmdline_mode(connector);
950
c7eb76f4
DV		 951 /* We should add connectors at the end to avoid upsetting the connector
952 * index too much. */
ae16c597
RC		 953 list_add_tail(&connector->head, &config->connector_list);
954 config->num_connector++;
f453ba04 955
a7331e5c 956 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 957 drm_object_attach_property(&connector->base,
ae16c597 958 config->edid_property,
a7331e5c 959 0);
f453ba04 960
58495563 961 drm_object_attach_property(&connector->base,
ae16c597
RC		 962 config->dpms_property, 0);
963
964 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
965 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
966 }
f453ba04 967
30f65707 968 connector->debugfs_entry = NULL;
5fff80bb
ML		 969out_put_type_id:
970 if (ret)
971 ida_remove(connector_ida, connector->connector_type_id);
972out_put_id:
973 if (ret)
974 ida_remove(&config->connector_ida, connector->connector_id);
2abdd313
JN		 975out_put:
976 if (ret)
977 drm_mode_object_put(dev, &connector->base);
978
979out_unlock:
84849903 980 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 981
982 return ret;
f453ba04
DA		 983}
984EXPORT_SYMBOL(drm_connector_init);
985
986/**
987 * drm_connector_cleanup - cleans up an initialised connector
988 * @connector: connector to cleanup
989 *
f453ba04
DA		 990 * Cleans up the connector but doesn't free the object.
991 */
992void drm_connector_cleanup(struct drm_connector *connector)
993{
994 struct drm_device *dev = connector->dev;
995 struct drm_display_mode *mode, *t;
996
40d9b043
DA		 997 if (connector->tile_group) {
998 drm_mode_put_tile_group(dev, connector->tile_group);
999 connector->tile_group = NULL;
1000 }
1001
f453ba04
DA		 1002 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
1003 drm_mode_remove(connector, mode);
1004
1005 list_for_each_entry_safe(mode, t, &connector->modes, head)
1006 drm_mode_remove(connector, mode);
1007
b21e3afe
IM		 1008 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
1009 connector->connector_type_id);
1010
5fff80bb
ML		 1011 ida_remove(&dev->mode_config.connector_ida,
1012 connector->connector_id);
1013
b5571e9d 1014 kfree(connector->display_info.bus_formats);
f453ba04 1015 drm_mode_object_put(dev, &connector->base);
2abdd313
JN		 1016 kfree(connector->name);
1017 connector->name = NULL;
f453ba04 1018 list_del(&connector->head);
6380c509 1019 dev->mode_config.num_connector--;
3009c037
TR		 1020
1021 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
1022 if (connector->state && connector->funcs->atomic_destroy_state)
1023 connector->funcs->atomic_destroy_state(connector,
1024 connector->state);
a18c0af1
TR		 1025
1026 memset(connector, 0, sizeof(*connector));
f453ba04
DA		 1027}
1028EXPORT_SYMBOL(drm_connector_cleanup);
1029
34ea3d38
TW		 1030/**
1031 * drm_connector_register - register a connector
1032 * @connector: the connector to register
1033 *
1034 * Register userspace interfaces for a connector
1035 *
1036 * Returns:
1037 * Zero on success, error code on failure.
1038 */
1039int drm_connector_register(struct drm_connector *connector)
1040{
30f65707
TW		 1041 int ret;
1042
2ee39452
DA		 1043 drm_mode_object_register(connector->dev, &connector->base);
1044
30f65707
TW		 1045 ret = drm_sysfs_connector_add(connector);
1046 if (ret)
1047 return ret;
1048
1049 ret = drm_debugfs_connector_add(connector);
1050 if (ret) {
1051 drm_sysfs_connector_remove(connector);
1052 return ret;
1053 }
1054
1055 return 0;
34ea3d38
TW		 1056}
1057EXPORT_SYMBOL(drm_connector_register);
1058
1059/**
1060 * drm_connector_unregister - unregister a connector
1061 * @connector: the connector to unregister
1062 *
1063 * Unregister userspace interfaces for a connector
1064 */
1065void drm_connector_unregister(struct drm_connector *connector)
1066{
1067 drm_sysfs_connector_remove(connector);
30f65707 1068 drm_debugfs_connector_remove(connector);
34ea3d38
TW		 1069}
1070EXPORT_SYMBOL(drm_connector_unregister);
1071
1072
c8e32cc1
DV		 1073/**
1074 * drm_connector_unplug_all - unregister connector userspace interfaces
1075 * @dev: drm device
1076 *
1077 * This function unregisters all connector userspace interfaces in sysfs. Should
1078 * be call when the device is disconnected, e.g. from an usb driver's
1079 * ->disconnect callback.
1080 */
cbc7e221
DA		 1081void drm_connector_unplug_all(struct drm_device *dev)
1082{
1083 struct drm_connector *connector;
1084
9a9f5ce8 1085 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
cbc7e221 1086 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
34ea3d38 1087 drm_connector_unregister(connector);
cbc7e221
DA		 1088
1089}
1090EXPORT_SYMBOL(drm_connector_unplug_all);
1091
c8e32cc1
DV		 1092/**
1093 * drm_encoder_init - Init a preallocated encoder
1094 * @dev: drm device
1095 * @encoder: the encoder to init
1096 * @funcs: callbacks for this encoder
1097 * @encoder_type: user visible type of the encoder
13a3d91f 1098 * @name: printf style format string for the encoder name, or NULL for default name
c8e32cc1
DV		 1099 *
1100 * Initialises a preallocated encoder. Encoder should be
1101 * subclassed as part of driver encoder objects.
1102 *
1103 * Returns:
1104 * Zero on success, error code on failure.
1105 */
6bfc56aa 1106int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 1107 struct drm_encoder *encoder,
1108 const struct drm_encoder_funcs *funcs,
13a3d91f 1109 int encoder_type, const char *name, ...)
f453ba04 1110{
6bfc56aa
VS		 1111 int ret;
1112
84849903 1113 drm_modeset_lock_all(dev);
f453ba04 1114
6bfc56aa
VS		 1115 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1116 if (ret)
e5748946 1117 goto out_unlock;
f453ba04 1118
6bfc56aa 1119 encoder->dev = dev;
f453ba04
DA		 1120 encoder->encoder_type = encoder_type;
1121 encoder->funcs = funcs;
86bf546b
VS		 1122 if (name) {
1123 va_list ap;
1124
1125 va_start(ap, name);
1126 encoder->name = kvasprintf(GFP_KERNEL, name, ap);
1127 va_end(ap);
1128 } else {
1129 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1130 drm_encoder_enum_list[encoder_type].name,
1131 encoder->base.id);
1132 }
e5748946
JN		 1133 if (!encoder->name) {
1134 ret = -ENOMEM;
1135 goto out_put;
1136 }
f453ba04
DA		 1137
1138 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1139 dev->mode_config.num_encoder++;
1140
e5748946
JN		 1141out_put:
1142 if (ret)
1143 drm_mode_object_put(dev, &encoder->base);
1144
1145out_unlock:
84849903 1146 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 1147
1148 return ret;
f453ba04
DA		 1149}
1150EXPORT_SYMBOL(drm_encoder_init);
1151
c8e32cc1
DV		 1152/**
1153 * drm_encoder_cleanup - cleans up an initialised encoder
1154 * @encoder: encoder to cleanup
1155 *
1156 * Cleans up the encoder but doesn't free the object.
1157 */
f453ba04
DA		 1158void drm_encoder_cleanup(struct drm_encoder *encoder)
1159{
1160 struct drm_device *dev = encoder->dev;
4dfd909f 1161
84849903 1162 drm_modeset_lock_all(dev);
f453ba04 1163 drm_mode_object_put(dev, &encoder->base);
e5748946 1164 kfree(encoder->name);
f453ba04 1165 list_del(&encoder->head);
6380c509 1166 dev->mode_config.num_encoder--;
84849903 1167 drm_modeset_unlock_all(dev);
a18c0af1
TR		 1168
1169 memset(encoder, 0, sizeof(*encoder));
f453ba04
DA		 1170}
1171EXPORT_SYMBOL(drm_encoder_cleanup);
1172
9f4c97a2
VS		 1173static unsigned int drm_num_planes(struct drm_device *dev)
1174{
1175 unsigned int num = 0;
1176 struct drm_plane *tmp;
1177
1178 drm_for_each_plane(tmp, dev) {
1179 num++;
1180 }
1181
1182 return num;
1183}
1184
35f2c3ae 1185/**
dc415ff9 1186 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1187 * @dev: DRM device
1188 * @plane: plane object to init
1189 * @possible_crtcs: bitmask of possible CRTCs
1190 * @funcs: callbacks for the new plane
1191 * @formats: array of supported formats (%DRM_FORMAT_*)
1192 * @format_count: number of elements in @formats
dc415ff9 1193 * @type: type of plane (overlay, primary, cursor)
b0b3b795 1194 * @name: printf style format string for the plane name, or NULL for default name
35f2c3ae 1195 *
dc415ff9 1196 * Initializes a plane object of type @type.
35f2c3ae 1197 *
c8e32cc1 1198 * Returns:
35f2c3ae
VS		 1199 * Zero on success, error code on failure.
1200 */
dc415ff9
MR		 1201int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1202 unsigned long possible_crtcs,
1203 const struct drm_plane_funcs *funcs,
45e3743a 1204 const uint32_t *formats, unsigned int format_count,
b0b3b795
VS		 1205 enum drm_plane_type type,
1206 const char *name, ...)
8cf5c917 1207{
6b4959f4 1208 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 1209 int ret;
1210
6bfc56aa
VS		 1211 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1212 if (ret)
baf698b0 1213 return ret;
6bfc56aa 1214
4d02e2de
DV		 1215 drm_modeset_lock_init(&plane->mutex);
1216
4d93914a 1217 plane->base.properties = &plane->properties;
8cf5c917 1218 plane->dev = dev;
8cf5c917 1219 plane->funcs = funcs;
2f6c5389
TR		 1220 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1221 GFP_KERNEL);
8cf5c917
JB		 1222 if (!plane->format_types) {
1223 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1224 drm_mode_object_put(dev, &plane->base);
baf698b0 1225 return -ENOMEM;
8cf5c917
JB		 1226 }
1227
9f4c97a2
VS		 1228 if (name) {
1229 va_list ap;
1230
1231 va_start(ap, name);
1232 plane->name = kvasprintf(GFP_KERNEL, name, ap);
1233 va_end(ap);
1234 } else {
1235 plane->name = kasprintf(GFP_KERNEL, "plane-%d",
1236 drm_num_planes(dev));
1237 }
1238 if (!plane->name) {
1239 kfree(plane->format_types);
1240 drm_mode_object_put(dev, &plane->base);
1241 return -ENOMEM;
1242 }
1243
308e5bcb 1244 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1245 plane->format_count = format_count;
1246 plane->possible_crtcs = possible_crtcs;
dc415ff9 1247 plane->type = type;
8cf5c917 1248
6b4959f4
RC		 1249 list_add_tail(&plane->head, &config->plane_list);
1250 config->num_total_plane++;
dc415ff9 1251 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
6b4959f4 1252 config->num_overlay_plane++;
8cf5c917 1253
9922ab5a 1254 drm_object_attach_property(&plane->base,
6b4959f4 1255 config->plane_type_property,
9922ab5a
RC		 1256 plane->type);
1257
6b4959f4
RC		 1258 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1259 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1260 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1261 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1262 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1263 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1264 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1265 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1266 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1267 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1268 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1269 }
1270
baf698b0 1271 return 0;
8cf5c917 1272}
dc415ff9
MR		 1273EXPORT_SYMBOL(drm_universal_plane_init);
1274
1275/**
1276 * drm_plane_init - Initialize a legacy plane
1277 * @dev: DRM device
1278 * @plane: plane object to init
1279 * @possible_crtcs: bitmask of possible CRTCs
1280 * @funcs: callbacks for the new plane
1281 * @formats: array of supported formats (%DRM_FORMAT_*)
1282 * @format_count: number of elements in @formats
1283 * @is_primary: plane type (primary vs overlay)
1284 *
1285 * Legacy API to initialize a DRM plane.
1286 *
1287 * New drivers should call drm_universal_plane_init() instead.
1288 *
1289 * Returns:
1290 * Zero on success, error code on failure.
1291 */
1292int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1293 unsigned long possible_crtcs,
1294 const struct drm_plane_funcs *funcs,
45e3743a 1295 const uint32_t *formats, unsigned int format_count,
dc415ff9
MR		 1296 bool is_primary)
1297{
1298 enum drm_plane_type type;
1299
1300 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1301 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
b0b3b795 1302 formats, format_count, type, NULL);
dc415ff9 1303}
8cf5c917
JB		 1304EXPORT_SYMBOL(drm_plane_init);
1305
35f2c3ae
VS		 1306/**
1307 * drm_plane_cleanup - Clean up the core plane usage
1308 * @plane: plane to cleanup
1309 *
1310 * This function cleans up @plane and removes it from the DRM mode setting
1311 * core. Note that the function does *not* free the plane structure itself,
1312 * this is the responsibility of the caller.
1313 */
8cf5c917
JB		 1314void drm_plane_cleanup(struct drm_plane *plane)
1315{
1316 struct drm_device *dev = plane->dev;
1317
84849903 1318 drm_modeset_lock_all(dev);
8cf5c917
JB		 1319 kfree(plane->format_types);
1320 drm_mode_object_put(dev, &plane->base);
dc415ff9
MR		 1321
1322 BUG_ON(list_empty(&plane->head));
1323
1324 list_del(&plane->head);
1325 dev->mode_config.num_total_plane--;
1326 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1327 dev->mode_config.num_overlay_plane--;
84849903 1328 drm_modeset_unlock_all(dev);
3009c037
TR		 1329
1330 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1331 if (plane->state && plane->funcs->atomic_destroy_state)
1332 plane->funcs->atomic_destroy_state(plane, plane->state);
a18c0af1 1333
9f4c97a2
VS		 1334 kfree(plane->name);
1335
a18c0af1 1336 memset(plane, 0, sizeof(*plane));
8cf5c917
JB		 1337}
1338EXPORT_SYMBOL(drm_plane_cleanup);
1339
10f637bf
DV		 1340/**
1341 * drm_plane_index - find the index of a registered plane
1342 * @plane: plane to find index for
1343 *
1344 * Given a registered plane, return the index of that CRTC within a DRM
1345 * device's list of planes.
1346 */
1347unsigned int drm_plane_index(struct drm_plane *plane)
1348{
1349 unsigned int index = 0;
1350 struct drm_plane *tmp;
1351
e4f62546 1352 drm_for_each_plane(tmp, plane->dev) {
10f637bf
DV		 1353 if (tmp == plane)
1354 return index;
1355
1356 index++;
1357 }
1358
1359 BUG();
1360}
1361EXPORT_SYMBOL(drm_plane_index);
1362
f81338a5
CK		 1363/**
1364 * drm_plane_from_index - find the registered plane at an index
1365 * @dev: DRM device
1366 * @idx: index of registered plane to find for
1367 *
1368 * Given a plane index, return the registered plane from DRM device's
1369 * list of planes with matching index.
1370 */
1371struct drm_plane *
1372drm_plane_from_index(struct drm_device *dev, int idx)
1373{
1374 struct drm_plane *plane;
1375 unsigned int i = 0;
1376
6295d607 1377 drm_for_each_plane(plane, dev) {
f81338a5
CK		 1378 if (i == idx)
1379 return plane;
1380 i++;
1381 }
1382 return NULL;
1383}
1384EXPORT_SYMBOL(drm_plane_from_index);
1385
35f2c3ae
VS		 1386/**
1387 * drm_plane_force_disable - Forcibly disable a plane
1388 * @plane: plane to disable
1389 *
1390 * Forces the plane to be disabled.
1391 *
1392 * Used when the plane's current framebuffer is destroyed,
1393 * and when restoring fbdev mode.
1394 */
9125e618
VS		 1395void drm_plane_force_disable(struct drm_plane *plane)
1396{
1397 int ret;
1398
3d30a59b 1399 if (!plane->fb)
9125e618
VS		 1400 return;
1401
3d30a59b 1402 plane->old_fb = plane->fb;
9125e618 1403 ret = plane->funcs->disable_plane(plane);
731cce48 1404 if (ret) {
9125e618 1405 DRM_ERROR("failed to disable plane with busy fb\n");
3d30a59b 1406 plane->old_fb = NULL;
731cce48
DV		 1407 return;
1408 }
9125e618 1409 /* disconnect the plane from the fb and crtc: */
220dd2bc 1410 drm_framebuffer_unreference(plane->old_fb);
3d30a59b 1411 plane->old_fb = NULL;
9125e618
VS		 1412 plane->fb = NULL;
1413 plane->crtc = NULL;
1414}
1415EXPORT_SYMBOL(drm_plane_force_disable);
1416
6b4959f4 1417static int drm_mode_create_standard_properties(struct drm_device *dev)
f453ba04 1418{
356af0e1 1419 struct drm_property *prop;
f453ba04
DA		 1420
1421 /*
1422 * Standard properties (apply to all connectors)
1423 */
356af0e1 1424 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
f453ba04
DA		 1425 DRM_MODE_PROP_IMMUTABLE,
1426 "EDID", 0);
356af0e1
RC		 1427 if (!prop)
1428 return -ENOMEM;
1429 dev->mode_config.edid_property = prop;
f453ba04 1430
356af0e1 1431 prop = drm_property_create_enum(dev, 0,
4a67d391
SH		 1432 "DPMS", drm_dpms_enum_list,
1433 ARRAY_SIZE(drm_dpms_enum_list));
356af0e1
RC		 1434 if (!prop)
1435 return -ENOMEM;
1436 dev->mode_config.dpms_property = prop;
6f134d7b 1437
356af0e1
RC		 1438 prop = drm_property_create(dev,
1439 DRM_MODE_PROP_BLOB |
1440 DRM_MODE_PROP_IMMUTABLE,
1441 "PATH", 0);
1442 if (!prop)
1443 return -ENOMEM;
1444 dev->mode_config.path_property = prop;
f453ba04 1445
356af0e1
RC		 1446 prop = drm_property_create(dev,
1447 DRM_MODE_PROP_BLOB |
1448 DRM_MODE_PROP_IMMUTABLE,
1449 "TILE", 0);
1450 if (!prop)
1451 return -ENOMEM;
1452 dev->mode_config.tile_property = prop;
9922ab5a 1453
6b4959f4 1454 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
9922ab5a
RC		 1455 "type", drm_plane_type_enum_list,
1456 ARRAY_SIZE(drm_plane_type_enum_list));
6b4959f4
RC		 1457 if (!prop)
1458 return -ENOMEM;
1459 dev->mode_config.plane_type_property = prop;
1460
1461 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1462 "SRC_X", 0, UINT_MAX);
1463 if (!prop)
1464 return -ENOMEM;
1465 dev->mode_config.prop_src_x = prop;
1466
1467 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1468 "SRC_Y", 0, UINT_MAX);
1469 if (!prop)
1470 return -ENOMEM;
1471 dev->mode_config.prop_src_y = prop;
1472
1473 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1474 "SRC_W", 0, UINT_MAX);
1475 if (!prop)
1476 return -ENOMEM;
1477 dev->mode_config.prop_src_w = prop;
1478
1479 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1480 "SRC_H", 0, UINT_MAX);
1481 if (!prop)
1482 return -ENOMEM;
1483 dev->mode_config.prop_src_h = prop;
1484
1485 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1486 "CRTC_X", INT_MIN, INT_MAX);
1487 if (!prop)
1488 return -ENOMEM;
1489 dev->mode_config.prop_crtc_x = prop;
1490
1491 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1492 "CRTC_Y", INT_MIN, INT_MAX);
1493 if (!prop)
1494 return -ENOMEM;
1495 dev->mode_config.prop_crtc_y = prop;
1496
1497 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1498 "CRTC_W", 0, INT_MAX);
1499 if (!prop)
1500 return -ENOMEM;
1501 dev->mode_config.prop_crtc_w = prop;
1502
1503 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1504 "CRTC_H", 0, INT_MAX);
1505 if (!prop)
1506 return -ENOMEM;
1507 dev->mode_config.prop_crtc_h = prop;
1508
1509 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1510 "FB_ID", DRM_MODE_OBJECT_FB);
1511 if (!prop)
1512 return -ENOMEM;
1513 dev->mode_config.prop_fb_id = prop;
1514
1515 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1516 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1517 if (!prop)
1518 return -ENOMEM;
1519 dev->mode_config.prop_crtc_id = prop;
9922ab5a 1520
eab3bbef
DV		 1521 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1522 "ACTIVE");
1523 if (!prop)
1524 return -ENOMEM;
1525 dev->mode_config.prop_active = prop;
1526
955f3c33
DS		 1527 prop = drm_property_create(dev,
1528 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1529 "MODE_ID", 0);
1530 if (!prop)
1531 return -ENOMEM;
1532 dev->mode_config.prop_mode_id = prop;
1533
9922ab5a
RC		 1534 return 0;
1535}
1536
f453ba04
DA		 1537/**
1538 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1539 * @dev: DRM device
1540 *
1541 * Called by a driver the first time a DVI-I connector is made.
1542 */
1543int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1544{
1545 struct drm_property *dvi_i_selector;
1546 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1547
1548 if (dev->mode_config.dvi_i_select_subconnector_property)
1549 return 0;
1550
1551 dvi_i_selector =
4a67d391 1552 drm_property_create_enum(dev, 0,
f453ba04 1553 "select subconnector",
4a67d391 1554 drm_dvi_i_select_enum_list,
f453ba04 1555 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1556 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1557
4a67d391 1558 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1559 "subconnector",
4a67d391 1560 drm_dvi_i_subconnector_enum_list,
f453ba04 1561 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1562 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1563
1564 return 0;
1565}
1566EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1567
1568/**
1569 * drm_create_tv_properties - create TV specific connector properties
1570 * @dev: DRM device
1571 * @num_modes: number of different TV formats (modes) supported
1572 * @modes: array of pointers to strings containing name of each format
1573 *
1574 * Called by a driver's TV initialization routine, this function creates
1575 * the TV specific connector properties for a given device. Caller is
1576 * responsible for allocating a list of format names and passing them to
1577 * this routine.
1578 */
2f763312
TR		 1579int drm_mode_create_tv_properties(struct drm_device *dev,
1580 unsigned int num_modes,
b7c914b3 1581 const char * const modes[])
f453ba04
DA		 1582{
1583 struct drm_property *tv_selector;
1584 struct drm_property *tv_subconnector;
2f763312 1585 unsigned int i;
f453ba04
DA		 1586
1587 if (dev->mode_config.tv_select_subconnector_property)
1588 return 0;
1589
1590 /*
1591 * Basic connector properties
1592 */
4a67d391 1593 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1594 "select subconnector",
4a67d391 1595 drm_tv_select_enum_list,
f453ba04 1596 ARRAY_SIZE(drm_tv_select_enum_list));
48aa1e74
IY		 1597 if (!tv_selector)
1598 goto nomem;
1599
f453ba04
DA		 1600 dev->mode_config.tv_select_subconnector_property = tv_selector;
1601
1602 tv_subconnector =
4a67d391
SH		 1603 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1604 "subconnector",
1605 drm_tv_subconnector_enum_list,
f453ba04 1606 ARRAY_SIZE(drm_tv_subconnector_enum_list));
48aa1e74
IY		 1607 if (!tv_subconnector)
1608 goto nomem;
f453ba04
DA		 1609 dev->mode_config.tv_subconnector_property = tv_subconnector;
1610
1611 /*
1612 * Other, TV specific properties: margins & TV modes.
1613 */
1614 dev->mode_config.tv_left_margin_property =
d9bc3c02 1615 drm_property_create_range(dev, 0, "left margin", 0, 100);
48aa1e74
IY		 1616 if (!dev->mode_config.tv_left_margin_property)
1617 goto nomem;
f453ba04
DA		 1618
1619 dev->mode_config.tv_right_margin_property =
d9bc3c02 1620 drm_property_create_range(dev, 0, "right margin", 0, 100);
48aa1e74
IY		 1621 if (!dev->mode_config.tv_right_margin_property)
1622 goto nomem;
f453ba04
DA		 1623
1624 dev->mode_config.tv_top_margin_property =
d9bc3c02 1625 drm_property_create_range(dev, 0, "top margin", 0, 100);
48aa1e74
IY		 1626 if (!dev->mode_config.tv_top_margin_property)
1627 goto nomem;
f453ba04
DA		 1628
1629 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1630 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
48aa1e74
IY		 1631 if (!dev->mode_config.tv_bottom_margin_property)
1632 goto nomem;
f453ba04
DA		 1633
1634 dev->mode_config.tv_mode_property =
1635 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1636 "mode", num_modes);
48aa1e74
IY		 1637 if (!dev->mode_config.tv_mode_property)
1638 goto nomem;
1639
f453ba04
DA		 1640 for (i = 0; i < num_modes; i++)
1641 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1642 i, modes[i]);
1643
b6b7902e 1644 dev->mode_config.tv_brightness_property =
d9bc3c02 1645 drm_property_create_range(dev, 0, "brightness", 0, 100);
48aa1e74
IY		 1646 if (!dev->mode_config.tv_brightness_property)
1647 goto nomem;
b6b7902e
FJ		 1648
1649 dev->mode_config.tv_contrast_property =
d9bc3c02 1650 drm_property_create_range(dev, 0, "contrast", 0, 100);
48aa1e74
IY		 1651 if (!dev->mode_config.tv_contrast_property)
1652 goto nomem;
b6b7902e
FJ		 1653
1654 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1655 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
48aa1e74
IY		 1656 if (!dev->mode_config.tv_flicker_reduction_property)
1657 goto nomem;
b6b7902e 1658
a75f0236 1659 dev->mode_config.tv_overscan_property =
d9bc3c02 1660 drm_property_create_range(dev, 0, "overscan", 0, 100);
48aa1e74
IY		 1661 if (!dev->mode_config.tv_overscan_property)
1662 goto nomem;
a75f0236
FJ		 1663
1664 dev->mode_config.tv_saturation_property =
d9bc3c02 1665 drm_property_create_range(dev, 0, "saturation", 0, 100);
48aa1e74
IY		 1666 if (!dev->mode_config.tv_saturation_property)
1667 goto nomem;
a75f0236
FJ		 1668
1669 dev->mode_config.tv_hue_property =
d9bc3c02 1670 drm_property_create_range(dev, 0, "hue", 0, 100);
48aa1e74
IY		 1671 if (!dev->mode_config.tv_hue_property)
1672 goto nomem;
a75f0236 1673
f453ba04 1674 return 0;
48aa1e74
IY		 1675nomem:
1676 return -ENOMEM;
f453ba04
DA		 1677}
1678EXPORT_SYMBOL(drm_mode_create_tv_properties);
1679
1680/**
1681 * drm_mode_create_scaling_mode_property - create scaling mode property
1682 * @dev: DRM device
1683 *
1684 * Called by a driver the first time it's needed, must be attached to desired
1685 * connectors.
1686 */
1687int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1688{
1689 struct drm_property *scaling_mode;
f453ba04
DA		 1690
1691 if (dev->mode_config.scaling_mode_property)
1692 return 0;
1693
1694 scaling_mode =
4a67d391
SH		 1695 drm_property_create_enum(dev, 0, "scaling mode",
1696 drm_scaling_mode_enum_list,
f453ba04 1697 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1698
1699 dev->mode_config.scaling_mode_property = scaling_mode;
1700
1701 return 0;
1702}
1703EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1704
ff587e45
VK		 1705/**
1706 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1707 * @dev: DRM device
1708 *
1709 * Called by a driver the first time it's needed, must be attached to desired
1710 * connectors.
1711 *
1712 * Returns:
1a498633 1713 * Zero on success, negative errno on failure.
ff587e45
VK		 1714 */
1715int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1716{
1717 if (dev->mode_config.aspect_ratio_property)
1718 return 0;
1719
1720 dev->mode_config.aspect_ratio_property =
1721 drm_property_create_enum(dev, 0, "aspect ratio",
1722 drm_aspect_ratio_enum_list,
1723 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1724
1725 if (dev->mode_config.aspect_ratio_property == NULL)
1726 return -ENOMEM;
1727
1728 return 0;
1729}
1730EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1731
884840aa
JB		 1732/**
1733 * drm_mode_create_dirty_property - create dirty property
1734 * @dev: DRM device
1735 *
1736 * Called by a driver the first time it's needed, must be attached to desired
1737 * connectors.
1738 */
1739int drm_mode_create_dirty_info_property(struct drm_device *dev)
1740{
1741 struct drm_property *dirty_info;
884840aa
JB		 1742
1743 if (dev->mode_config.dirty_info_property)
1744 return 0;
1745
1746 dirty_info =
4a67d391 1747 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1748 "dirty",
4a67d391 1749 drm_dirty_info_enum_list,
884840aa 1750 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1751 dev->mode_config.dirty_info_property = dirty_info;
1752
1753 return 0;
1754}
1755EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1756
5bb2bbf5
DA		 1757/**
1758 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1759 * @dev: DRM device
1760 *
1761 * Create the the suggested x/y offset property for connectors.
1762 */
1763int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1764{
1765 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1766 return 0;
1767
1768 dev->mode_config.suggested_x_property =
1769 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1770
1771 dev->mode_config.suggested_y_property =
1772 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1773
1774 if (dev->mode_config.suggested_x_property == NULL ||
1775 dev->mode_config.suggested_y_property == NULL)
1776 return -ENOMEM;
1777 return 0;
1778}
1779EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1780
f453ba04
DA		 1781/**
1782 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1783 * @dev: drm device for the ioctl
1784 * @data: data pointer for the ioctl
1785 * @file_priv: drm file for the ioctl call
f453ba04 1786 *
f453ba04
DA		 1787 * Construct a set of configuration description structures and return
1788 * them to the user, including CRTC, connector and framebuffer configuration.
1789 *
1790 * Called by the user via ioctl.
1791 *
c8e32cc1 1792 * Returns:
1a498633 1793 * Zero on success, negative errno on failure.
f453ba04
DA		 1794 */
1795int drm_mode_getresources(struct drm_device *dev, void *data,
1796 struct drm_file *file_priv)
1797{
1798 struct drm_mode_card_res *card_res = data;
1799 struct list_head *lh;
1800 struct drm_framebuffer *fb;
1801 struct drm_connector *connector;
1802 struct drm_crtc *crtc;
1803 struct drm_encoder *encoder;
1804 int ret = 0;
1805 int connector_count = 0;
1806 int crtc_count = 0;
1807 int fb_count = 0;
1808 int encoder_count = 0;
9c7060f7 1809 int copied = 0;
f453ba04
DA		 1810 uint32_t __user *fb_id;
1811 uint32_t __user *crtc_id;
1812 uint32_t __user *connector_id;
1813 uint32_t __user *encoder_id;
f453ba04 1814
fb3b06c8
DA		 1815 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1816 return -EINVAL;
1817
f453ba04 1818
4b096ac1 1819 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1820 /*
1821 * For the non-control nodes we need to limit the list of resources
1822 * by IDs in the group list for this node
1823 */
1824 list_for_each(lh, &file_priv->fbs)
1825 fb_count++;
1826
4b096ac1
DV		 1827 /* handle this in 4 parts */
1828 /* FBs */
1829 if (card_res->count_fbs >= fb_count) {
1830 copied = 0;
1831 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1832 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1833 if (put_user(fb->base.id, fb_id + copied)) {
1834 mutex_unlock(&file_priv->fbs_lock);
1835 return -EFAULT;
1836 }
1837 copied++;
1838 }
1839 }
1840 card_res->count_fbs = fb_count;
1841 mutex_unlock(&file_priv->fbs_lock);
1842
fcf93f69
DV		 1843 /* mode_config.mutex protects the connector list against e.g. DP MST
1844 * connector hot-adding. CRTC/Plane lists are invariant. */
1845 mutex_lock(&dev->mode_config.mutex);
9c7060f7
DV		 1846 drm_for_each_crtc(crtc, dev)
1847 crtc_count++;
f453ba04 1848
9c7060f7
DV		 1849 drm_for_each_connector(connector, dev)
1850 connector_count++;
f453ba04 1851
9c7060f7
DV		 1852 drm_for_each_encoder(encoder, dev)
1853 encoder_count++;
f453ba04
DA		 1854
1855 card_res->max_height = dev->mode_config.max_height;
1856 card_res->min_height = dev->mode_config.min_height;
1857 card_res->max_width = dev->mode_config.max_width;
1858 card_res->min_width = dev->mode_config.min_width;
1859
f453ba04
DA		 1860 /* CRTCs */
1861 if (card_res->count_crtcs >= crtc_count) {
1862 copied = 0;
1863 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
9c7060f7 1864 drm_for_each_crtc(crtc, dev) {
fa3ab4c2
VS		 1865 DRM_DEBUG_KMS("[CRTC:%d:%s]\n",
1866 crtc->base.id, crtc->name);
9c7060f7
DV		 1867 if (put_user(crtc->base.id, crtc_id + copied)) {
1868 ret = -EFAULT;
1869 goto out;
f453ba04 1870 }
9c7060f7 1871 copied++;
f453ba04
DA		 1872 }
1873 }
1874 card_res->count_crtcs = crtc_count;
1875
1876 /* Encoders */
1877 if (card_res->count_encoders >= encoder_count) {
1878 copied = 0;
1879 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
9c7060f7
DV		 1880 drm_for_each_encoder(encoder, dev) {
1881 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1882 encoder->name);
1883 if (put_user(encoder->base.id, encoder_id +
1884 copied)) {
1885 ret = -EFAULT;
1886 goto out;
f453ba04 1887 }
9c7060f7 1888 copied++;
f453ba04
DA		 1889 }
1890 }
1891 card_res->count_encoders = encoder_count;
1892
1893 /* Connectors */
1894 if (card_res->count_connectors >= connector_count) {
1895 copied = 0;
1896 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
9c7060f7
DV		 1897 drm_for_each_connector(connector, dev) {
1898 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1899 connector->base.id,
1900 connector->name);
1901 if (put_user(connector->base.id,
1902 connector_id + copied)) {
1903 ret = -EFAULT;
1904 goto out;
f453ba04 1905 }
9c7060f7 1906 copied++;
f453ba04
DA		 1907 }
1908 }
1909 card_res->count_connectors = connector_count;
1910
9440106b 1911 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1912 card_res->count_connectors, card_res->count_encoders);
1913
1914out:
fcf93f69 1915 mutex_unlock(&dev->mode_config.mutex);
f453ba04
DA		 1916 return ret;
1917}
1918
1919/**
1920 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1921 * @dev: drm device for the ioctl
1922 * @data: data pointer for the ioctl
1923 * @file_priv: drm file for the ioctl call
f453ba04 1924 *
f453ba04
DA		 1925 * Construct a CRTC configuration structure to return to the user.
1926 *
1927 * Called by the user via ioctl.
1928 *
c8e32cc1 1929 * Returns:
1a498633 1930 * Zero on success, negative errno on failure.
f453ba04
DA		 1931 */
1932int drm_mode_getcrtc(struct drm_device *dev,
1933 void *data, struct drm_file *file_priv)
1934{
1935 struct drm_mode_crtc *crtc_resp = data;
1936 struct drm_crtc *crtc;
f453ba04 1937
fb3b06c8
DA		 1938 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1939 return -EINVAL;
1940
a2b34e22 1941 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
fcf93f69
DV		 1942 if (!crtc)
1943 return -ENOENT;
f453ba04 1944
fcf93f69 1945 drm_modeset_lock_crtc(crtc, crtc->primary);
f453ba04 1946 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 1947 if (crtc->primary->fb)
1948 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 1949 else
1950 crtc_resp->fb_id = 0;
1951
31c946e8
DV		 1952 if (crtc->state) {
1953 crtc_resp->x = crtc->primary->state->src_x >> 16;
1954 crtc_resp->y = crtc->primary->state->src_y >> 16;
1955 if (crtc->state->enable) {
934a8a89 1956 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
31c946e8 1957 crtc_resp->mode_valid = 1;
f453ba04 1958
31c946e8
DV		 1959 } else {
1960 crtc_resp->mode_valid = 0;
1961 }
f453ba04 1962 } else {
31c946e8
DV		 1963 crtc_resp->x = crtc->x;
1964 crtc_resp->y = crtc->y;
1965 if (crtc->enabled) {
934a8a89 1966 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
31c946e8
DV		 1967 crtc_resp->mode_valid = 1;
1968
1969 } else {
1970 crtc_resp->mode_valid = 0;
1971 }
f453ba04 1972 }
fcf93f69 1973 drm_modeset_unlock_crtc(crtc);
f453ba04 1974
baf698b0 1975 return 0;
f453ba04
DA		 1976}
1977
61d8e328
DL		 1978static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1979 const struct drm_file *file_priv)
1980{
1981 /*
1982 * If user-space hasn't configured the driver to expose the stereo 3D
1983 * modes, don't expose them.
1984 */
1985 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1986 return false;
1987
1988 return true;
1989}
1990
abd69c55
DV		 1991static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
1992{
1993 /* For atomic drivers only state objects are synchronously updated and
1994 * protected by modeset locks, so check those first. */
1995 if (connector->state)
1996 return connector->state->best_encoder;
1997 return connector->encoder;
1998}
1999
95cbf110 2000/* helper for getconnector and getproperties ioctls */
88a48e29 2001static int get_properties(struct drm_mode_object *obj, bool atomic,
95cbf110
RC		 2002 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2003 uint32_t *arg_count_props)
2004{
88a48e29
RC		 2005 int props_count;
2006 int i, ret, copied;
2007
2008 props_count = obj->properties->count;
2009 if (!atomic)
2010 props_count -= obj->properties->atomic_count;
95cbf110
RC		 2011
2012 if ((*arg_count_props >= props_count) && props_count) {
88a48e29 2013 for (i = 0, copied = 0; copied < props_count; i++) {
95cbf110
RC		 2014 struct drm_property *prop = obj->properties->properties[i];
2015 uint64_t val;
2016
88a48e29
RC		 2017 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2018 continue;
2019
95cbf110
RC		 2020 ret = drm_object_property_get_value(obj, prop, &val);
2021 if (ret)
2022 return ret;
2023
2024 if (put_user(prop->base.id, prop_ptr + copied))
2025 return -EFAULT;
2026
2027 if (put_user(val, prop_values + copied))
2028 return -EFAULT;
2029
2030 copied++;
2031 }
2032 }
2033 *arg_count_props = props_count;
2034
2035 return 0;
2036}
2037
f453ba04
DA		 2038/**
2039 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 2040 * @dev: drm device for the ioctl
2041 * @data: data pointer for the ioctl
2042 * @file_priv: drm file for the ioctl call
f453ba04 2043 *
f453ba04
DA		 2044 * Construct a connector configuration structure to return to the user.
2045 *
2046 * Called by the user via ioctl.
2047 *
c8e32cc1 2048 * Returns:
1a498633 2049 * Zero on success, negative errno on failure.
f453ba04
DA		 2050 */
2051int drm_mode_getconnector(struct drm_device *dev, void *data,
2052 struct drm_file *file_priv)
2053{
2054 struct drm_mode_get_connector *out_resp = data;
f453ba04 2055 struct drm_connector *connector;
abd69c55 2056 struct drm_encoder *encoder;
f453ba04
DA		 2057 struct drm_display_mode *mode;
2058 int mode_count = 0;
f453ba04
DA		 2059 int encoders_count = 0;
2060 int ret = 0;
2061 int copied = 0;
2062 int i;
2063 struct drm_mode_modeinfo u_mode;
2064 struct drm_mode_modeinfo __user *mode_ptr;
f453ba04
DA		 2065 uint32_t __user *encoder_ptr;
2066
fb3b06c8
DA		 2067 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2068 return -EINVAL;
2069
f453ba04
DA		 2070 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2071
9440106b 2072 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 2073
7b24056b 2074 mutex_lock(&dev->mode_config.mutex);
f453ba04 2075
a2b34e22
RC		 2076 connector = drm_connector_find(dev, out_resp->connector_id);
2077 if (!connector) {
f27657f2 2078 ret = -ENOENT;
04bdf441 2079 goto out_unlock;
f453ba04 2080 }
f453ba04 2081
01073b08
TR		 2082 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2083 if (connector->encoder_ids[i] != 0)
f453ba04 2084 encoders_count++;
f453ba04
DA		 2085
2086 if (out_resp->count_modes == 0) {
2087 connector->funcs->fill_modes(connector,
2088 dev->mode_config.max_width,
2089 dev->mode_config.max_height);
2090 }
2091
2092 /* delayed so we get modes regardless of pre-fill_modes state */
2093 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 2094 if (drm_mode_expose_to_userspace(mode, file_priv))
2095 mode_count++;
f453ba04
DA		 2096
2097 out_resp->connector_id = connector->base.id;
2098 out_resp->connector_type = connector->connector_type;
2099 out_resp->connector_type_id = connector->connector_type_id;
2100 out_resp->mm_width = connector->display_info.width_mm;
2101 out_resp->mm_height = connector->display_info.height_mm;
2102 out_resp->subpixel = connector->display_info.subpixel_order;
2103 out_resp->connection = connector->status;
2caa80e7
DV		 2104
2105 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2106 encoder = drm_connector_get_encoder(connector);
2107 if (encoder)
2108 out_resp->encoder_id = encoder->base.id;
f453ba04
DA		 2109 else
2110 out_resp->encoder_id = 0;
2111
2112 /*
2113 * This ioctl is called twice, once to determine how much space is
2114 * needed, and the 2nd time to fill it.
2115 */
2116 if ((out_resp->count_modes >= mode_count) && mode_count) {
2117 copied = 0;
81f6c7f8 2118 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 2119 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 2120 if (!drm_mode_expose_to_userspace(mode, file_priv))
2121 continue;
2122
934a8a89 2123 drm_mode_convert_to_umode(&u_mode, mode);
f453ba04
DA		 2124 if (copy_to_user(mode_ptr + copied,
2125 &u_mode, sizeof(u_mode))) {
2126 ret = -EFAULT;
2127 goto out;
2128 }
2129 copied++;
2130 }
2131 }
2132 out_resp->count_modes = mode_count;
2133
88a48e29 2134 ret = get_properties(&connector->base, file_priv->atomic,
95cbf110
RC		 2135 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2136 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2137 &out_resp->count_props);
2138 if (ret)
2139 goto out;
f453ba04
DA		 2140
2141 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2142 copied = 0;
81f6c7f8 2143 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 2144 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2145 if (connector->encoder_ids[i] != 0) {
2146 if (put_user(connector->encoder_ids[i],
2147 encoder_ptr + copied)) {
2148 ret = -EFAULT;
2149 goto out;
2150 }
2151 copied++;
2152 }
2153 }
2154 }
2155 out_resp->count_encoders = encoders_count;
2156
2157out:
ccfc0865 2158 drm_modeset_unlock(&dev->mode_config.connection_mutex);
04bdf441
TR		 2159
2160out_unlock:
7b24056b
DV		 2161 mutex_unlock(&dev->mode_config.mutex);
2162
f453ba04
DA		 2163 return ret;
2164}
2165
abd69c55
DV		 2166static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2167{
2168 struct drm_connector *connector;
2169 struct drm_device *dev = encoder->dev;
2170 bool uses_atomic = false;
2171
2172 /* For atomic drivers only state objects are synchronously updated and
2173 * protected by modeset locks, so check those first. */
6295d607 2174 drm_for_each_connector(connector, dev) {
abd69c55
DV		 2175 if (!connector->state)
2176 continue;
2177
2178 uses_atomic = true;
2179
2180 if (connector->state->best_encoder != encoder)
2181 continue;
2182
2183 return connector->state->crtc;
2184 }
2185
2186 /* Don't return stale data (e.g. pending async disable). */
2187 if (uses_atomic)
2188 return NULL;
2189
2190 return encoder->crtc;
2191}
2192
c8e32cc1
DV		 2193/**
2194 * drm_mode_getencoder - get encoder configuration
2195 * @dev: drm device for the ioctl
2196 * @data: data pointer for the ioctl
2197 * @file_priv: drm file for the ioctl call
2198 *
2199 * Construct a encoder configuration structure to return to the user.
2200 *
2201 * Called by the user via ioctl.
2202 *
2203 * Returns:
1a498633 2204 * Zero on success, negative errno on failure.
c8e32cc1 2205 */
f453ba04
DA		 2206int drm_mode_getencoder(struct drm_device *dev, void *data,
2207 struct drm_file *file_priv)
2208{
2209 struct drm_mode_get_encoder *enc_resp = data;
f453ba04 2210 struct drm_encoder *encoder;
abd69c55 2211 struct drm_crtc *crtc;
f453ba04 2212
fb3b06c8
DA		 2213 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2214 return -EINVAL;
2215
a2b34e22 2216 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
fcf93f69
DV		 2217 if (!encoder)
2218 return -ENOENT;
f453ba04 2219
fcf93f69 2220 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2221 crtc = drm_encoder_get_crtc(encoder);
2222 if (crtc)
2223 enc_resp->crtc_id = crtc->base.id;
f453ba04
DA		 2224 else
2225 enc_resp->crtc_id = 0;
fcf93f69
DV		 2226 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2227
f453ba04
DA		 2228 enc_resp->encoder_type = encoder->encoder_type;
2229 enc_resp->encoder_id = encoder->base.id;
2230 enc_resp->possible_crtcs = encoder->possible_crtcs;
2231 enc_resp->possible_clones = encoder->possible_clones;
2232
baf698b0 2233 return 0;
f453ba04
DA		 2234}
2235
8cf5c917 2236/**
c8e32cc1 2237 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 2238 * @dev: DRM device
2239 * @data: ioctl data
2240 * @file_priv: DRM file info
2241 *
c8e32cc1
DV		 2242 * Construct a list of plane ids to return to the user.
2243 *
2244 * Called by the user via ioctl.
2245 *
2246 * Returns:
1a498633 2247 * Zero on success, negative errno on failure.
8cf5c917
JB		 2248 */
2249int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 2250 struct drm_file *file_priv)
8cf5c917
JB		 2251{
2252 struct drm_mode_get_plane_res *plane_resp = data;
2253 struct drm_mode_config *config;
2254 struct drm_plane *plane;
2255 uint32_t __user *plane_ptr;
fcf93f69 2256 int copied = 0;
681e7ec7 2257 unsigned num_planes;
8cf5c917
JB		 2258
2259 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2260 return -EINVAL;
2261
8cf5c917
JB		 2262 config = &dev->mode_config;
2263
681e7ec7
MR		 2264 if (file_priv->universal_planes)
2265 num_planes = config->num_total_plane;
2266 else
2267 num_planes = config->num_overlay_plane;
2268
8cf5c917
JB		 2269 /*
2270 * This ioctl is called twice, once to determine how much space is
2271 * needed, and the 2nd time to fill it.
2272 */
681e7ec7
MR		 2273 if (num_planes &&
2274 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 2275 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917 2276
fcf93f69 2277 /* Plane lists are invariant, no locking needed. */
e4f62546 2278 drm_for_each_plane(plane, dev) {
681e7ec7
MR		 2279 /*
2280 * Unless userspace set the 'universal planes'
2281 * capability bit, only advertise overlays.
2282 */
2283 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2284 !file_priv->universal_planes)
e27dde3e
MR		 2285 continue;
2286
fcf93f69
DV		 2287 if (put_user(plane->base.id, plane_ptr + copied))
2288 return -EFAULT;
8cf5c917
JB		 2289 copied++;
2290 }
2291 }
681e7ec7 2292 plane_resp->count_planes = num_planes;
8cf5c917 2293
fcf93f69 2294 return 0;
8cf5c917
JB		 2295}
2296
2297/**
c8e32cc1 2298 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2299 * @dev: DRM device
2300 * @data: ioctl data
2301 * @file_priv: DRM file info
2302 *
c8e32cc1
DV		 2303 * Construct a plane configuration structure to return to the user.
2304 *
2305 * Called by the user via ioctl.
2306 *
2307 * Returns:
1a498633 2308 * Zero on success, negative errno on failure.
8cf5c917
JB		 2309 */
2310int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2311 struct drm_file *file_priv)
8cf5c917
JB		 2312{
2313 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2314 struct drm_plane *plane;
2315 uint32_t __user *format_ptr;
8cf5c917
JB		 2316
2317 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2318 return -EINVAL;
2319
a2b34e22 2320 plane = drm_plane_find(dev, plane_resp->plane_id);
fcf93f69
DV		 2321 if (!plane)
2322 return -ENOENT;
8cf5c917 2323
fcf93f69 2324 drm_modeset_lock(&plane->mutex, NULL);
8cf5c917
JB		 2325 if (plane->crtc)
2326 plane_resp->crtc_id = plane->crtc->base.id;
2327 else
2328 plane_resp->crtc_id = 0;
2329
2330 if (plane->fb)
2331 plane_resp->fb_id = plane->fb->base.id;
2332 else
2333 plane_resp->fb_id = 0;
fcf93f69 2334 drm_modeset_unlock(&plane->mutex);
8cf5c917
JB		 2335
2336 plane_resp->plane_id = plane->base.id;
2337 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2338 plane_resp->gamma_size = 0;
8cf5c917
JB		 2339
2340 /*
2341 * This ioctl is called twice, once to determine how much space is
2342 * needed, and the 2nd time to fill it.
2343 */
2344 if (plane->format_count &&
2345 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2346 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2347 if (copy_to_user(format_ptr,
2348 plane->format_types,
2349 sizeof(uint32_t) * plane->format_count)) {
fcf93f69 2350 return -EFAULT;
8cf5c917
JB		 2351 }
2352 }
2353 plane_resp->count_format_types = plane->format_count;
2354
baf698b0 2355 return 0;
8cf5c917
JB		 2356}
2357
ead8610d
LP		 2358/**
2359 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2360 * @plane: plane to check for format support
2361 * @format: the pixel format
2362 *
2363 * Returns:
2364 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2365 * otherwise.
2366 */
2367int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2368{
2369 unsigned int i;
2370
2371 for (i = 0; i < plane->format_count; i++) {
2372 if (format == plane->format_types[i])
2373 return 0;
2374 }
2375
2376 return -EINVAL;
2377}
2378
ce8d9ecc
VS		 2379static int check_src_coords(uint32_t src_x, uint32_t src_y,
2380 uint32_t src_w, uint32_t src_h,
2381 const struct drm_framebuffer *fb)
2382{
2383 unsigned int fb_width, fb_height;
2384
2385 fb_width = fb->width << 16;
2386 fb_height = fb->height << 16;
2387
2388 /* Make sure source coordinates are inside the fb. */
2389 if (src_w > fb_width ||
2390 src_x > fb_width - src_w ||
2391 src_h > fb_height ||
2392 src_y > fb_height - src_h) {
2393 DRM_DEBUG_KMS("Invalid source coordinates "
2394 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2395 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2396 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2397 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2398 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2399 return -ENOSPC;
2400 }
2401
2402 return 0;
2403}
2404
b36552b3
MR		 2405/*
2406 * setplane_internal - setplane handler for internal callers
8cf5c917 2407 *
b36552b3
MR		 2408 * Note that we assume an extra reference has already been taken on fb. If the
2409 * update fails, this reference will be dropped before return; if it succeeds,
2410 * the previous framebuffer (if any) will be unreferenced instead.
c8e32cc1 2411 *
b36552b3 2412 * src_{x,y,w,h} are provided in 16.16 fixed point format
8cf5c917 2413 */
f2b50c11
DV		 2414static int __setplane_internal(struct drm_plane *plane,
2415 struct drm_crtc *crtc,
2416 struct drm_framebuffer *fb,
2417 int32_t crtc_x, int32_t crtc_y,
2418 uint32_t crtc_w, uint32_t crtc_h,
2419 /* src_{x,y,w,h} values are 16.16 fixed point */
2420 uint32_t src_x, uint32_t src_y,
2421 uint32_t src_w, uint32_t src_h)
8cf5c917 2422{
8cf5c917
JB		 2423 int ret = 0;
2424
8cf5c917 2425 /* No fb means shut it down */
b36552b3 2426 if (!fb) {
3d30a59b 2427 plane->old_fb = plane->fb;
731cce48
DV		 2428 ret = plane->funcs->disable_plane(plane);
2429 if (!ret) {
2430 plane->crtc = NULL;
2431 plane->fb = NULL;
2432 } else {
3d30a59b 2433 plane->old_fb = NULL;
731cce48 2434 }
8cf5c917
JB		 2435 goto out;
2436 }
2437
7f994f3f
MR		 2438 /* Check whether this plane is usable on this CRTC */
2439 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2440 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2441 ret = -EINVAL;
2442 goto out;
2443 }
2444
62443be6 2445 /* Check whether this plane supports the fb pixel format. */
ead8610d
LP		 2446 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2447 if (ret) {
6ba6d03e
VS		 2448 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2449 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2450 goto out;
2451 }
2452
3968be94
MR		 2453 /* Give drivers some help against integer overflows */
2454 if (crtc_w > INT_MAX ||
2455 crtc_x > INT_MAX - (int32_t) crtc_w ||
2456 crtc_h > INT_MAX ||
2457 crtc_y > INT_MAX - (int32_t) crtc_h) {
2458 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2459 crtc_w, crtc_h, crtc_x, crtc_y);
c390eed0
VS		 2460 ret = -ERANGE;
2461 goto out;
3968be94
MR		 2462 }
2463
ce8d9ecc
VS		 2464 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2465 if (ret)
42ef8789 2466 goto out;
42ef8789 2467
3d30a59b 2468 plane->old_fb = plane->fb;
8cf5c917 2469 ret = plane->funcs->update_plane(plane, crtc, fb,
b36552b3
MR		 2470 crtc_x, crtc_y, crtc_w, crtc_h,
2471 src_x, src_y, src_w, src_h);
8cf5c917
JB		 2472 if (!ret) {
2473 plane->crtc = crtc;
2474 plane->fb = fb;
35f8badc 2475 fb = NULL;
0fe27f06 2476 } else {
3d30a59b 2477 plane->old_fb = NULL;
8cf5c917
JB		 2478 }
2479
2480out:
6c2a7532
DV		 2481 if (fb)
2482 drm_framebuffer_unreference(fb);
3d30a59b
DV		 2483 if (plane->old_fb)
2484 drm_framebuffer_unreference(plane->old_fb);
2485 plane->old_fb = NULL;
8cf5c917
JB		 2486
2487 return ret;
f2b50c11 2488}
b36552b3 2489
f2b50c11
DV		 2490static int setplane_internal(struct drm_plane *plane,
2491 struct drm_crtc *crtc,
2492 struct drm_framebuffer *fb,
2493 int32_t crtc_x, int32_t crtc_y,
2494 uint32_t crtc_w, uint32_t crtc_h,
2495 /* src_{x,y,w,h} values are 16.16 fixed point */
2496 uint32_t src_x, uint32_t src_y,
2497 uint32_t src_w, uint32_t src_h)
2498{
2499 int ret;
2500
2501 drm_modeset_lock_all(plane->dev);
2502 ret = __setplane_internal(plane, crtc, fb,
2503 crtc_x, crtc_y, crtc_w, crtc_h,
2504 src_x, src_y, src_w, src_h);
2505 drm_modeset_unlock_all(plane->dev);
2506
2507 return ret;
b36552b3
MR		 2508}
2509
2510/**
2511 * drm_mode_setplane - configure a plane's configuration
2512 * @dev: DRM device
2513 * @data: ioctl data*
2514 * @file_priv: DRM file info
2515 *
2516 * Set plane configuration, including placement, fb, scaling, and other factors.
2517 * Or pass a NULL fb to disable (planes may be disabled without providing a
2518 * valid crtc).
2519 *
2520 * Returns:
1a498633 2521 * Zero on success, negative errno on failure.
b36552b3
MR		 2522 */
2523int drm_mode_setplane(struct drm_device *dev, void *data,
2524 struct drm_file *file_priv)
2525{
2526 struct drm_mode_set_plane *plane_req = data;
b36552b3
MR		 2527 struct drm_plane *plane;
2528 struct drm_crtc *crtc = NULL;
2529 struct drm_framebuffer *fb = NULL;
2530
2531 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2532 return -EINVAL;
2533
b36552b3
MR		 2534 /*
2535 * First, find the plane, crtc, and fb objects. If not available,
2536 * we don't bother to call the driver.
2537 */
933f622f
RC		 2538 plane = drm_plane_find(dev, plane_req->plane_id);
2539 if (!plane) {
b36552b3
MR		 2540 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2541 plane_req->plane_id);
2542 return -ENOENT;
2543 }
b36552b3
MR		 2544
2545 if (plane_req->fb_id) {
2546 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2547 if (!fb) {
2548 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2549 plane_req->fb_id);
2550 return -ENOENT;
2551 }
2552
933f622f
RC		 2553 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2554 if (!crtc) {
b36552b3
MR		 2555 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2556 plane_req->crtc_id);
2557 return -ENOENT;
2558 }
b36552b3
MR		 2559 }
2560
161d0dc1
MR		 2561 /*
2562 * setplane_internal will take care of deref'ing either the old or new
2563 * framebuffer depending on success.
2564 */
17cfd91f 2565 return setplane_internal(plane, crtc, fb,
b36552b3
MR		 2566 plane_req->crtc_x, plane_req->crtc_y,
2567 plane_req->crtc_w, plane_req->crtc_h,
2568 plane_req->src_x, plane_req->src_y,
2569 plane_req->src_w, plane_req->src_h);
8cf5c917
JB		 2570}
2571
2d13b679
DV		 2572/**
2573 * drm_mode_set_config_internal - helper to call ->set_config
2574 * @set: modeset config to set
2575 *
2576 * This is a little helper to wrap internal calls to the ->set_config driver
2577 * interface. The only thing it adds is correct refcounting dance.
4dfd909f 2578 *
c8e32cc1 2579 * Returns:
1a498633 2580 * Zero on success, negative errno on failure.
2d13b679
DV		 2581 */
2582int drm_mode_set_config_internal(struct drm_mode_set *set)
2583{
2584 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2585 struct drm_framebuffer *fb;
2586 struct drm_crtc *tmp;
b0d12325
DV		 2587 int ret;
2588
5cef29aa
DV		 2589 /*
2590 * NOTE: ->set_config can also disable other crtcs (if we steal all
2591 * connectors from it), hence we need to refcount the fbs across all
2592 * crtcs. Atomic modeset will have saner semantics ...
2593 */
e4f62546 2594 drm_for_each_crtc(tmp, crtc->dev)
3d30a59b 2595 tmp->primary->old_fb = tmp->primary->fb;
5cef29aa 2596
b0d12325 2597 fb = set->fb;
2d13b679 2598
b0d12325
DV		 2599 ret = crtc->funcs->set_config(set);
2600 if (ret == 0) {
e13161af 2601 crtc->primary->crtc = crtc;
0fe27f06 2602 crtc->primary->fb = fb;
5cef29aa 2603 }
cc85e121 2604
e4f62546 2605 drm_for_each_crtc(tmp, crtc->dev) {
f4510a27
MR		 2606 if (tmp->primary->fb)
2607 drm_framebuffer_reference(tmp->primary->fb);
3d30a59b
DV		 2608 if (tmp->primary->old_fb)
2609 drm_framebuffer_unreference(tmp->primary->old_fb);
2610 tmp->primary->old_fb = NULL;
b0d12325
DV		 2611 }
2612
2613 return ret;
2d13b679
DV		 2614}
2615EXPORT_SYMBOL(drm_mode_set_config_internal);
2616
ecb7e16b
GP		 2617/**
2618 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2619 * @mode: mode to query
2620 * @hdisplay: hdisplay value to fill in
2621 * @vdisplay: vdisplay value to fill in
2622 *
2623 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2624 * the appropriate layout.
2625 */
2626void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2627 int *hdisplay, int *vdisplay)
2628{
2629 struct drm_display_mode adjusted;
2630
2631 drm_mode_copy(&adjusted, mode);
2632 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2633 *hdisplay = adjusted.crtc_hdisplay;
2634 *vdisplay = adjusted.crtc_vdisplay;
2635}
2636EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2637
af93629d
MR		 2638/**
2639 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2640 * CRTC viewport
2641 * @crtc: CRTC that framebuffer will be displayed on
2642 * @x: x panning
2643 * @y: y panning
2644 * @mode: mode that framebuffer will be displayed under
2645 * @fb: framebuffer to check size of
c11e9283 2646 */
af93629d
MR		 2647int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2648 int x, int y,
2649 const struct drm_display_mode *mode,
2650 const struct drm_framebuffer *fb)
c11e9283
DL		 2651
2652{
2653 int hdisplay, vdisplay;
2654
ecb7e16b 2655 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
a0c1bbb0 2656
33e0be63
VS		 2657 if (crtc->state &&
2658 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2659 BIT(DRM_ROTATE_270)))
c11e9283
DL		 2660 swap(hdisplay, vdisplay);
2661
ce8d9ecc
VS		 2662 return check_src_coords(x << 16, y << 16,
2663 hdisplay << 16, vdisplay << 16, fb);
c11e9283 2664}
af93629d 2665EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2666
f453ba04
DA		 2667/**
2668 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2669 * @dev: drm device for the ioctl
2670 * @data: data pointer for the ioctl
2671 * @file_priv: drm file for the ioctl call
f453ba04 2672 *
f453ba04
DA		 2673 * Build a new CRTC configuration based on user request.
2674 *
2675 * Called by the user via ioctl.
2676 *
c8e32cc1 2677 * Returns:
1a498633 2678 * Zero on success, negative errno on failure.
f453ba04
DA		 2679 */
2680int drm_mode_setcrtc(struct drm_device *dev, void *data,
2681 struct drm_file *file_priv)
2682{
2683 struct drm_mode_config *config = &dev->mode_config;
2684 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2685 struct drm_crtc *crtc;
f453ba04
DA		 2686 struct drm_connector **connector_set = NULL, *connector;
2687 struct drm_framebuffer *fb = NULL;
2688 struct drm_display_mode *mode = NULL;
2689 struct drm_mode_set set;
2690 uint32_t __user *set_connectors_ptr;
4a1b0714 2691 int ret;
f453ba04
DA		 2692 int i;
2693
fb3b06c8
DA		 2694 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2695 return -EINVAL;
2696
01447e9f
ZJ		 2697 /*
2698 * Universal plane src offsets are only 16.16, prevent havoc for
2699 * drivers using universal plane code internally.
2700 */
2701 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
1d97e915
VS		 2702 return -ERANGE;
2703
84849903 2704 drm_modeset_lock_all(dev);
a2b34e22
RC		 2705 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2706 if (!crtc) {
58367ed6 2707 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2708 ret = -ENOENT;
f453ba04
DA		 2709 goto out;
2710 }
fa3ab4c2 2711 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
f453ba04
DA		 2712
2713 if (crtc_req->mode_valid) {
2714 /* If we have a mode we need a framebuffer. */
2715 /* If we pass -1, set the mode with the currently bound fb */
2716 if (crtc_req->fb_id == -1) {
f4510a27 2717 if (!crtc->primary->fb) {
6653cc8d
VS		 2718 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2719 ret = -EINVAL;
2720 goto out;
f453ba04 2721 }
f4510a27 2722 fb = crtc->primary->fb;
b0d12325
DV		 2723 /* Make refcounting symmetric with the lookup path. */
2724 drm_framebuffer_reference(fb);
f453ba04 2725 } else {
786b99ed
DV		 2726 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2727 if (!fb) {
58367ed6
ZY		 2728 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2729 crtc_req->fb_id);
37c4e705 2730 ret = -ENOENT;
f453ba04
DA		 2731 goto out;
2732 }
f453ba04
DA		 2733 }
2734
2735 mode = drm_mode_create(dev);
ee34ab5b
VS		 2736 if (!mode) {
2737 ret = -ENOMEM;
2738 goto out;
2739 }
2740
934a8a89 2741 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
90367bf6
VS		 2742 if (ret) {
2743 DRM_DEBUG_KMS("Invalid mode\n");
2744 goto out;
2745 }
2746
f453ba04 2747 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2748
7eb5f302
LP		 2749 /*
2750 * Check whether the primary plane supports the fb pixel format.
2751 * Drivers not implementing the universal planes API use a
2752 * default formats list provided by the DRM core which doesn't
2753 * match real hardware capabilities. Skip the check in that
2754 * case.
2755 */
2756 if (!crtc->primary->format_default) {
2757 ret = drm_plane_check_pixel_format(crtc->primary,
2758 fb->pixel_format);
2759 if (ret) {
2760 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2761 drm_get_format_name(fb->pixel_format));
2762 goto out;
2763 }
2764 }
2765
c11e9283
DL		 2766 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2767 mode, fb);
2768 if (ret)
5f61bb42 2769 goto out;
c11e9283 2770
f453ba04
DA		 2771 }
2772
2773 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2774 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2775 ret = -EINVAL;
2776 goto out;
2777 }
2778
7781de74 2779 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2780 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2781 crtc_req->count_connectors);
2782 ret = -EINVAL;
2783 goto out;
2784 }
2785
2786 if (crtc_req->count_connectors > 0) {
2787 u32 out_id;
2788
2789 /* Avoid unbounded kernel memory allocation */
2790 if (crtc_req->count_connectors > config->num_connector) {
2791 ret = -EINVAL;
2792 goto out;
2793 }
2794
2f6c5389
TR		 2795 connector_set = kmalloc_array(crtc_req->count_connectors,
2796 sizeof(struct drm_connector *),
2797 GFP_KERNEL);
f453ba04
DA		 2798 if (!connector_set) {
2799 ret = -ENOMEM;
2800 goto out;
2801 }
2802
2803 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2804 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2805 if (get_user(out_id, &set_connectors_ptr[i])) {
2806 ret = -EFAULT;
2807 goto out;
2808 }
2809
a2b34e22
RC		 2810 connector = drm_connector_find(dev, out_id);
2811 if (!connector) {
58367ed6
ZY		 2812 DRM_DEBUG_KMS("Connector id %d unknown\n",
2813 out_id);
f27657f2 2814 ret = -ENOENT;
f453ba04
DA		 2815 goto out;
2816 }
9440106b
JG		 2817 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2818 connector->base.id,
25933820 2819 connector->name);
f453ba04
DA		 2820
2821 connector_set[i] = connector;
2822 }
2823 }
2824
2825 set.crtc = crtc;
2826 set.x = crtc_req->x;
2827 set.y = crtc_req->y;
2828 set.mode = mode;
2829 set.connectors = connector_set;
2830 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2831 set.fb = fb;
2d13b679 2832 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2833
2834out:
b0d12325
DV		 2835 if (fb)
2836 drm_framebuffer_unreference(fb);
2837
f453ba04 2838 kfree(connector_set);
ee34ab5b 2839 drm_mode_destroy(dev, mode);
84849903 2840 drm_modeset_unlock_all(dev);
f453ba04
DA		 2841 return ret;
2842}
2843
161d0dc1
MR		 2844/**
2845 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2846 * universal plane handler call
2847 * @crtc: crtc to update cursor for
2848 * @req: data pointer for the ioctl
2849 * @file_priv: drm file for the ioctl call
2850 *
2851 * Legacy cursor ioctl's work directly with driver buffer handles. To
2852 * translate legacy ioctl calls into universal plane handler calls, we need to
2853 * wrap the native buffer handle in a drm_framebuffer.
2854 *
2855 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2856 * buffer with a pitch of 4*width; the universal plane interface should be used
2857 * directly in cases where the hardware can support other buffer settings and
2858 * userspace wants to make use of these capabilities.
2859 *
2860 * Returns:
1a498633 2861 * Zero on success, negative errno on failure.
161d0dc1
MR		 2862 */
2863static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2864 struct drm_mode_cursor2 *req,
2865 struct drm_file *file_priv)
2866{
2867 struct drm_device *dev = crtc->dev;
2868 struct drm_framebuffer *fb = NULL;
2869 struct drm_mode_fb_cmd2 fbreq = {
2870 .width = req->width,
2871 .height = req->height,
2872 .pixel_format = DRM_FORMAT_ARGB8888,
2873 .pitches = { req->width * 4 },
2874 .handles = { req->handle },
2875 };
2876 int32_t crtc_x, crtc_y;
2877 uint32_t crtc_w = 0, crtc_h = 0;
2878 uint32_t src_w = 0, src_h = 0;
2879 int ret = 0;
2880
2881 BUG_ON(!crtc->cursor);
f2b50c11 2882 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
161d0dc1
MR		 2883
2884 /*
2885 * Obtain fb we'll be using (either new or existing) and take an extra
2886 * reference to it if fb != null. setplane will take care of dropping
2887 * the reference if the plane update fails.
2888 */
2889 if (req->flags & DRM_MODE_CURSOR_BO) {
2890 if (req->handle) {
9a6f5130 2891 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
161d0dc1
MR		 2892 if (IS_ERR(fb)) {
2893 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2894 return PTR_ERR(fb);
2895 }
161d0dc1
MR		 2896 } else {
2897 fb = NULL;
2898 }
2899 } else {
161d0dc1
MR		 2900 fb = crtc->cursor->fb;
2901 if (fb)
2902 drm_framebuffer_reference(fb);
161d0dc1
MR		 2903 }
2904
2905 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2906 crtc_x = req->x;
2907 crtc_y = req->y;
2908 } else {
2909 crtc_x = crtc->cursor_x;
2910 crtc_y = crtc->cursor_y;
2911 }
2912
2913 if (fb) {
2914 crtc_w = fb->width;
2915 crtc_h = fb->height;
2916 src_w = fb->width << 16;
2917 src_h = fb->height << 16;
2918 }
2919
2920 /*
2921 * setplane_internal will take care of deref'ing either the old or new
2922 * framebuffer depending on success.
2923 */
f2b50c11 2924 ret = __setplane_internal(crtc->cursor, crtc, fb,
161d0dc1
MR		 2925 crtc_x, crtc_y, crtc_w, crtc_h,
2926 0, 0, src_w, src_h);
2927
2928 /* Update successful; save new cursor position, if necessary */
2929 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2930 crtc->cursor_x = req->x;
2931 crtc->cursor_y = req->y;
2932 }
2933
2934 return ret;
2935}
2936
4c813d4d
DA		 2937static int drm_mode_cursor_common(struct drm_device *dev,
2938 struct drm_mode_cursor2 *req,
2939 struct drm_file *file_priv)
f453ba04 2940{
f453ba04
DA		 2941 struct drm_crtc *crtc;
2942 int ret = 0;
2943
fb3b06c8
DA		 2944 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2945 return -EINVAL;
2946
7c4eaca4 2947 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 2948 return -EINVAL;
f453ba04 2949
a2b34e22
RC		 2950 crtc = drm_crtc_find(dev, req->crtc_id);
2951 if (!crtc) {
58367ed6 2952 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 2953 return -ENOENT;
f453ba04 2954 }
f453ba04 2955
161d0dc1
MR		 2956 /*
2957 * If this crtc has a universal cursor plane, call that plane's update
2958 * handler rather than using legacy cursor handlers.
2959 */
4d02e2de 2960 drm_modeset_lock_crtc(crtc, crtc->cursor);
f2b50c11
DV		 2961 if (crtc->cursor) {
2962 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2963 goto out;
2964 }
2965
f453ba04 2966 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 2967 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 2968 ret = -ENXIO;
2969 goto out;
2970 }
2971 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 2972 if (crtc->funcs->cursor_set2)
2973 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2974 req->width, req->height, req->hot_x, req->hot_y);
2975 else
2976 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2977 req->width, req->height);
f453ba04
DA		 2978 }
2979
2980 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2981 if (crtc->funcs->cursor_move) {
2982 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2983 } else {
f453ba04
DA		 2984 ret = -EFAULT;
2985 goto out;
2986 }
2987 }
2988out:
d059f652 2989 drm_modeset_unlock_crtc(crtc);
dac35663 2990
f453ba04 2991 return ret;
4c813d4d
DA		 2992
2993}
c8e32cc1
DV		 2994
2995
2996/**
2997 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2998 * @dev: drm device for the ioctl
2999 * @data: data pointer for the ioctl
3000 * @file_priv: drm file for the ioctl call
3001 *
3002 * Set the cursor configuration based on user request.
3003 *
3004 * Called by the user via ioctl.
3005 *
3006 * Returns:
1a498633 3007 * Zero on success, negative errno on failure.
c8e32cc1 3008 */
4c813d4d 3009int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 3010 void *data, struct drm_file *file_priv)
4c813d4d
DA		 3011{
3012 struct drm_mode_cursor *req = data;
3013 struct drm_mode_cursor2 new_req;
3014
3015 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3016 new_req.hot_x = new_req.hot_y = 0;
3017
3018 return drm_mode_cursor_common(dev, &new_req, file_priv);
3019}
3020
c8e32cc1
DV		 3021/**
3022 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3023 * @dev: drm device for the ioctl
3024 * @data: data pointer for the ioctl
3025 * @file_priv: drm file for the ioctl call
3026 *
3027 * Set the cursor configuration based on user request. This implements the 2nd
3028 * version of the cursor ioctl, which allows userspace to additionally specify
3029 * the hotspot of the pointer.
3030 *
3031 * Called by the user via ioctl.
3032 *
3033 * Returns:
1a498633 3034 * Zero on success, negative errno on failure.
c8e32cc1 3035 */
4c813d4d
DA		 3036int drm_mode_cursor2_ioctl(struct drm_device *dev,
3037 void *data, struct drm_file *file_priv)
3038{
3039 struct drm_mode_cursor2 *req = data;
4dfd909f 3040
4c813d4d 3041 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 3042}
3043
c8e32cc1
DV		 3044/**
3045 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3046 * @bpp: bits per pixels
3047 * @depth: bit depth per pixel
3048 *
3049 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3050 * Useful in fbdev emulation code, since that deals in those values.
3051 */
308e5bcb
JB		 3052uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3053{
3054 uint32_t fmt;
3055
3056 switch (bpp) {
3057 case 8:
d84f031b 3058 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 3059 break;
3060 case 16:
3061 if (depth == 15)
04b3924d 3062 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 3063 else
04b3924d 3064 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 3065 break;
3066 case 24:
04b3924d 3067 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 3068 break;
3069 case 32:
3070 if (depth == 24)
04b3924d 3071 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 3072 else if (depth == 30)
04b3924d 3073 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 3074 else
04b3924d 3075 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 3076 break;
3077 default:
04b3924d
VS		 3078 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3079 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 3080 break;
3081 }
3082
3083 return fmt;
3084}
3085EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3086
f453ba04
DA		 3087/**
3088 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 3089 * @dev: drm device for the ioctl
3090 * @data: data pointer for the ioctl
3091 * @file_priv: drm file for the ioctl call
f453ba04 3092 *
c8e32cc1 3093 * Add a new FB to the specified CRTC, given a user request. This is the
209f5527 3094 * original addfb ioctl which only supported RGB formats.
f453ba04
DA		 3095 *
3096 * Called by the user via ioctl.
3097 *
c8e32cc1 3098 * Returns:
1a498633 3099 * Zero on success, negative errno on failure.
f453ba04
DA		 3100 */
3101int drm_mode_addfb(struct drm_device *dev,
3102 void *data, struct drm_file *file_priv)
3103{
308e5bcb
JB		 3104 struct drm_mode_fb_cmd *or = data;
3105 struct drm_mode_fb_cmd2 r = {};
228f2cb3 3106 int ret;
308e5bcb 3107
228f2cb3 3108 /* convert to new format and call new ioctl */
308e5bcb
JB		 3109 r.fb_id = or->fb_id;
3110 r.width = or->width;
3111 r.height = or->height;
3112 r.pitches[0] = or->pitch;
3113 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3114 r.handles[0] = or->handle;
3115
228f2cb3
CE		 3116 ret = drm_mode_addfb2(dev, &r, file_priv);
3117 if (ret)
3118 return ret;
308e5bcb 3119
228f2cb3 3120 or->fb_id = r.fb_id;
4b096ac1 3121
baf698b0 3122 return 0;
308e5bcb
JB		 3123}
3124
cff91b62 3125static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 3126{
3127 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3128
3129 switch (format) {
3130 case DRM_FORMAT_C8:
3131 case DRM_FORMAT_RGB332:
3132 case DRM_FORMAT_BGR233:
3133 case DRM_FORMAT_XRGB4444:
3134 case DRM_FORMAT_XBGR4444:
3135 case DRM_FORMAT_RGBX4444:
3136 case DRM_FORMAT_BGRX4444:
3137 case DRM_FORMAT_ARGB4444:
3138 case DRM_FORMAT_ABGR4444:
3139 case DRM_FORMAT_RGBA4444:
3140 case DRM_FORMAT_BGRA4444:
3141 case DRM_FORMAT_XRGB1555:
3142 case DRM_FORMAT_XBGR1555:
3143 case DRM_FORMAT_RGBX5551:
3144 case DRM_FORMAT_BGRX5551:
3145 case DRM_FORMAT_ARGB1555:
3146 case DRM_FORMAT_ABGR1555:
3147 case DRM_FORMAT_RGBA5551:
3148 case DRM_FORMAT_BGRA5551:
3149 case DRM_FORMAT_RGB565:
3150 case DRM_FORMAT_BGR565:
3151 case DRM_FORMAT_RGB888:
3152 case DRM_FORMAT_BGR888:
3153 case DRM_FORMAT_XRGB8888:
3154 case DRM_FORMAT_XBGR8888:
3155 case DRM_FORMAT_RGBX8888:
3156 case DRM_FORMAT_BGRX8888:
3157 case DRM_FORMAT_ARGB8888:
3158 case DRM_FORMAT_ABGR8888:
3159 case DRM_FORMAT_RGBA8888:
3160 case DRM_FORMAT_BGRA8888:
3161 case DRM_FORMAT_XRGB2101010:
3162 case DRM_FORMAT_XBGR2101010:
3163 case DRM_FORMAT_RGBX1010102:
3164 case DRM_FORMAT_BGRX1010102:
3165 case DRM_FORMAT_ARGB2101010:
3166 case DRM_FORMAT_ABGR2101010:
3167 case DRM_FORMAT_RGBA1010102:
3168 case DRM_FORMAT_BGRA1010102:
3169 case DRM_FORMAT_YUYV:
3170 case DRM_FORMAT_YVYU:
3171 case DRM_FORMAT_UYVY:
3172 case DRM_FORMAT_VYUY:
3173 case DRM_FORMAT_AYUV:
3174 case DRM_FORMAT_NV12:
3175 case DRM_FORMAT_NV21:
3176 case DRM_FORMAT_NV16:
3177 case DRM_FORMAT_NV61:
ba623f6a
LP		 3178 case DRM_FORMAT_NV24:
3179 case DRM_FORMAT_NV42:
935b5977
VS		 3180 case DRM_FORMAT_YUV410:
3181 case DRM_FORMAT_YVU410:
3182 case DRM_FORMAT_YUV411:
3183 case DRM_FORMAT_YVU411:
3184 case DRM_FORMAT_YUV420:
3185 case DRM_FORMAT_YVU420:
3186 case DRM_FORMAT_YUV422:
3187 case DRM_FORMAT_YVU422:
3188 case DRM_FORMAT_YUV444:
3189 case DRM_FORMAT_YVU444:
3190 return 0;
3191 default:
23c453a4
VS		 3192 DRM_DEBUG_KMS("invalid pixel format %s\n",
3193 drm_get_format_name(r->pixel_format));
935b5977
VS		 3194 return -EINVAL;
3195 }
3196}
3197
cff91b62 3198static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 3199{
3200 int ret, hsub, vsub, num_planes, i;
3201
3202 ret = format_check(r);
3203 if (ret) {
6ba6d03e
VS		 3204 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3205 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 3206 return ret;
3207 }
3208
3209 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3210 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3211 num_planes = drm_format_num_planes(r->pixel_format);
3212
3213 if (r->width == 0 || r->width % hsub) {
209f5527 3214 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
d1b45d5f
VS		 3215 return -EINVAL;
3216 }
3217
3218 if (r->height == 0 || r->height % vsub) {
1aa1b11c 3219 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 3220 return -EINVAL;
3221 }
3222
3223 for (i = 0; i < num_planes; i++) {
3224 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 3225 unsigned int height = r->height / (i != 0 ? vsub : 1);
3226 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 3227
3228 if (!r->handles[i]) {
1aa1b11c 3229 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 3230 return -EINVAL;
3231 }
3232
b180b5d1
VS		 3233 if ((uint64_t) width * cpp > UINT_MAX)
3234 return -ERANGE;
3235
3236 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3237 return -ERANGE;
3238
3239 if (r->pitches[i] < width * cpp) {
1aa1b11c 3240 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 3241 return -EINVAL;
3242 }
e3eb3250
RC		 3243
3244 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3245 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3246 r->modifier[i], i);
3247 return -EINVAL;
3248 }
570655b0
RC		 3249
3250 /* modifier specific checks: */
3251 switch (r->modifier[i]) {
3252 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3253 /* NOTE: the pitch restriction may be lifted later if it turns
3254 * out that no hw has this restriction:
3255 */
3256 if (r->pixel_format != DRM_FORMAT_NV12 ||
3257 width % 128 || height % 32 ||
3258 r->pitches[i] % 128) {
3259 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3260 return -EINVAL;
3261 }
3262 break;
3263
3264 default:
3265 break;
3266 }
d1b45d5f
VS		 3267 }
3268
bbe16a40
DV		 3269 for (i = num_planes; i < 4; i++) {
3270 if (r->modifier[i]) {
3271 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3272 return -EINVAL;
3273 }
3274
3275 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3276 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3277 continue;
3278
3279 if (r->handles[i]) {
3280 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3281 return -EINVAL;
3282 }
3283
3284 if (r->pitches[i]) {
3285 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3286 return -EINVAL;
3287 }
3288
3289 if (r->offsets[i]) {
3290 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3291 return -EINVAL;
3292 }
3293 }
3294
d1b45d5f
VS		 3295 return 0;
3296}
3297
9a6f5130
CW		 3298static struct drm_framebuffer *
3299internal_framebuffer_create(struct drm_device *dev,
1eb83451 3300 const struct drm_mode_fb_cmd2 *r,
9a6f5130 3301 struct drm_file *file_priv)
308e5bcb 3302{
f453ba04
DA		 3303 struct drm_mode_config *config = &dev->mode_config;
3304 struct drm_framebuffer *fb;
4a1b0714 3305 int ret;
f453ba04 3306
e3eb3250 3307 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
e3cc3520 3308 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
c394c2b0 3309 return ERR_PTR(-EINVAL);
e3cc3520
VS		 3310 }
3311
f453ba04 3312 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 3313 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 3314 r->width, config->min_width, config->max_width);
c394c2b0 3315 return ERR_PTR(-EINVAL);
f453ba04
DA		 3316 }
3317 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 3318 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 3319 r->height, config->min_height, config->max_height);
c394c2b0 3320 return ERR_PTR(-EINVAL);
f453ba04
DA		 3321 }
3322
e3eb3250
RC		 3323 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3324 !dev->mode_config.allow_fb_modifiers) {
3325 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3326 return ERR_PTR(-EINVAL);
3327 }
3328
d1b45d5f
VS		 3329 ret = framebuffer_check(r);
3330 if (ret)
c394c2b0 3331 return ERR_PTR(ret);
935b5977 3332
f453ba04 3333 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 3334 if (IS_ERR(fb)) {
1aa1b11c 3335 DRM_DEBUG_KMS("could not create framebuffer\n");
c394c2b0 3336 return fb;
f453ba04
DA		 3337 }
3338
c394c2b0
MR		 3339 return fb;
3340}
4b096ac1 3341
c394c2b0
MR		 3342/**
3343 * drm_mode_addfb2 - add an FB to the graphics configuration
3344 * @dev: drm device for the ioctl
3345 * @data: data pointer for the ioctl
3346 * @file_priv: drm file for the ioctl call
3347 *
3348 * Add a new FB to the specified CRTC, given a user request with format. This is
3349 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3350 * and uses fourcc codes as pixel format specifiers.
3351 *
3352 * Called by the user via ioctl.
3353 *
3354 * Returns:
1a498633 3355 * Zero on success, negative errno on failure.
c394c2b0
MR		 3356 */
3357int drm_mode_addfb2(struct drm_device *dev,
3358 void *data, struct drm_file *file_priv)
3359{
9a6f5130 3360 struct drm_mode_fb_cmd2 *r = data;
c394c2b0
MR		 3361 struct drm_framebuffer *fb;
3362
3363 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3364 return -EINVAL;
3365
9a6f5130 3366 fb = internal_framebuffer_create(dev, r, file_priv);
c394c2b0
MR		 3367 if (IS_ERR(fb))
3368 return PTR_ERR(fb);
3369
9a6f5130
CW		 3370 /* Transfer ownership to the filp for reaping on close */
3371
3372 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3373 mutex_lock(&file_priv->fbs_lock);
3374 r->fb_id = fb->base.id;
3375 list_add(&fb->filp_head, &file_priv->fbs);
3376 mutex_unlock(&file_priv->fbs_lock);
3377
c394c2b0 3378 return 0;
f453ba04
DA		 3379}
3380
3381/**
3382 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 3383 * @dev: drm device for the ioctl
3384 * @data: data pointer for the ioctl
3385 * @file_priv: drm file for the ioctl call
f453ba04 3386 *
f453ba04
DA		 3387 * Remove the FB specified by the user.
3388 *
3389 * Called by the user via ioctl.
3390 *
c8e32cc1 3391 * Returns:
1a498633 3392 * Zero on success, negative errno on failure.
f453ba04
DA		 3393 */
3394int drm_mode_rmfb(struct drm_device *dev,
3395 void *data, struct drm_file *file_priv)
3396{
f453ba04
DA		 3397 struct drm_framebuffer *fb = NULL;
3398 struct drm_framebuffer *fbl = NULL;
3399 uint32_t *id = data;
f453ba04
DA		 3400 int found = 0;
3401
fb3b06c8
DA		 3402 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3403 return -EINVAL;
3404
4b096ac1 3405 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 3406 mutex_lock(&dev->mode_config.fb_lock);
3407 fb = __drm_framebuffer_lookup(dev, *id);
3408 if (!fb)
3409 goto fail_lookup;
3410
f453ba04
DA		 3411 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3412 if (fb == fbl)
3413 found = 1;
2b677e8c
DV		 3414 if (!found)
3415 goto fail_lookup;
3416
4b096ac1 3417 list_del_init(&fb->filp_head);
2b677e8c 3418 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 3419 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3420
13803132 3421 drm_framebuffer_unreference(fb);
4b096ac1 3422
2b677e8c
DV		 3423 return 0;
3424
3425fail_lookup:
3426 mutex_unlock(&dev->mode_config.fb_lock);
3427 mutex_unlock(&file_priv->fbs_lock);
3428
37c4e705 3429 return -ENOENT;
f453ba04
DA		 3430}
3431
3432/**
3433 * drm_mode_getfb - get FB info
065a50ed
DV		 3434 * @dev: drm device for the ioctl
3435 * @data: data pointer for the ioctl
3436 * @file_priv: drm file for the ioctl call
f453ba04 3437 *
f453ba04
DA		 3438 * Lookup the FB given its ID and return info about it.
3439 *
3440 * Called by the user via ioctl.
3441 *
c8e32cc1 3442 * Returns:
1a498633 3443 * Zero on success, negative errno on failure.
f453ba04
DA		 3444 */
3445int drm_mode_getfb(struct drm_device *dev,
3446 void *data, struct drm_file *file_priv)
3447{
3448 struct drm_mode_fb_cmd *r = data;
f453ba04 3449 struct drm_framebuffer *fb;
58c0dca1 3450 int ret;
f453ba04 3451
fb3b06c8
DA		 3452 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3453 return -EINVAL;
3454
786b99ed 3455 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 3456 if (!fb)
37c4e705 3457 return -ENOENT;
f453ba04
DA		 3458
3459 r->height = fb->height;
3460 r->width = fb->width;
3461 r->depth = fb->depth;
3462 r->bpp = fb->bits_per_pixel;
01f2c773 3463 r->pitch = fb->pitches[0];
101b96f3 3464 if (fb->funcs->create_handle) {
09f308f7 3465 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 3466 drm_is_control_client(file_priv)) {
101b96f3
DH		 3467 ret = fb->funcs->create_handle(fb, file_priv,
3468 &r->handle);
3469 } else {
3470 /* GET_FB() is an unprivileged ioctl so we must not
3471 * return a buffer-handle to non-master processes! For
3472 * backwards-compatibility reasons, we cannot make
3473 * GET_FB() privileged, so just return an invalid handle
3474 * for non-masters. */
3475 r->handle = 0;
3476 ret = 0;
3477 }
3478 } else {
af26ef3b 3479 ret = -ENODEV;
101b96f3 3480 }
f453ba04 3481
58c0dca1
DV		 3482 drm_framebuffer_unreference(fb);
3483
f453ba04
DA		 3484 return ret;
3485}
3486
c8e32cc1
DV		 3487/**
3488 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3489 * @dev: drm device for the ioctl
3490 * @data: data pointer for the ioctl
3491 * @file_priv: drm file for the ioctl call
3492 *
3493 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3494 * rectangle list. Generic userspace which does frontbuffer rendering must call
3495 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3496 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3497 *
3498 * Modesetting drivers which always update the frontbuffer do not need to
3499 * implement the corresponding ->dirty framebuffer callback.
3500 *
3501 * Called by the user via ioctl.
3502 *
3503 * Returns:
1a498633 3504 * Zero on success, negative errno on failure.
c8e32cc1 3505 */
884840aa
JB		 3506int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3507 void *data, struct drm_file *file_priv)
3508{
3509 struct drm_clip_rect __user *clips_ptr;
3510 struct drm_clip_rect *clips = NULL;
3511 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 3512 struct drm_framebuffer *fb;
3513 unsigned flags;
3514 int num_clips;
4a1b0714 3515 int ret;
884840aa 3516
fb3b06c8
DA		 3517 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3518 return -EINVAL;
3519
786b99ed 3520 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 3521 if (!fb)
37c4e705 3522 return -ENOENT;
884840aa
JB		 3523
3524 num_clips = r->num_clips;
81f6c7f8 3525 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 3526
3527 if (!num_clips != !clips_ptr) {
3528 ret = -EINVAL;
3529 goto out_err1;
3530 }
3531
3532 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3533
3534 /* If userspace annotates copy, clips must come in pairs */
3535 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3536 ret = -EINVAL;
3537 goto out_err1;
3538 }
3539
3540 if (num_clips && clips_ptr) {
a5cd3351
XW		 3541 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3542 ret = -EINVAL;
3543 goto out_err1;
3544 }
bd3f0ff9 3545 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
884840aa
JB		 3546 if (!clips) {
3547 ret = -ENOMEM;
3548 goto out_err1;
3549 }
3550
3551 ret = copy_from_user(clips, clips_ptr,
3552 num_clips * sizeof(*clips));
e902a358
DC		 3553 if (ret) {
3554 ret = -EFAULT;
884840aa 3555 goto out_err2;
e902a358 3556 }
884840aa
JB		 3557 }
3558
3559 if (fb->funcs->dirty) {
02b00162
TH		 3560 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3561 clips, num_clips);
884840aa
JB		 3562 } else {
3563 ret = -ENOSYS;
884840aa
JB		 3564 }
3565
3566out_err2:
3567 kfree(clips);
3568out_err1:
4ccf097f
DV		 3569 drm_framebuffer_unreference(fb);
3570
884840aa
JB		 3571 return ret;
3572}
3573
3574
f453ba04
DA		 3575/**
3576 * drm_fb_release - remove and free the FBs on this file
065a50ed 3577 * @priv: drm file for the ioctl
f453ba04 3578 *
f453ba04
DA		 3579 * Destroy all the FBs associated with @filp.
3580 *
3581 * Called by the user via ioctl.
3582 *
c8e32cc1 3583 * Returns:
1a498633 3584 * Zero on success, negative errno on failure.
f453ba04 3585 */
ea39f835 3586void drm_fb_release(struct drm_file *priv)
f453ba04 3587{
f453ba04
DA		 3588 struct drm_framebuffer *fb, *tfb;
3589
1b116297
DV		 3590 /*
3591 * When the file gets released that means no one else can access the fb
e2db726b 3592 * list any more, so no need to grab fpriv->fbs_lock. And we need to
1b116297
DV		 3593 * avoid upsetting lockdep since the universal cursor code adds a
3594 * framebuffer while holding mutex locks.
3595 *
3596 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3597 * locks is impossible here since no one else but this function can get
3598 * at it any more.
3599 */
f453ba04 3600 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
4b096ac1 3601 list_del_init(&fb->filp_head);
2b677e8c 3602
73f7570b 3603 /* This drops the fpriv->fbs reference. */
13803132 3604 drm_framebuffer_unreference(fb);
f453ba04 3605 }
f453ba04
DA		 3606}
3607
c8e32cc1
DV		 3608/**
3609 * drm_property_create - create a new property type
3610 * @dev: drm device
3611 * @flags: flags specifying the property type
3612 * @name: name of the property
3613 * @num_values: number of pre-defined values
3614 *
3615 * This creates a new generic drm property which can then be attached to a drm
3616 * object with drm_object_attach_property. The returned property object must be
3617 * freed with drm_property_destroy.
3618 *
3b5b9932
DL		 3619 * Note that the DRM core keeps a per-device list of properties and that, if
3620 * drm_mode_config_cleanup() is called, it will destroy all properties created
3621 * by the driver.
3622 *
c8e32cc1
DV		 3623 * Returns:
3624 * A pointer to the newly created property on success, NULL on failure.
3625 */
f453ba04
DA		 3626struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3627 const char *name, int num_values)
3628{
3629 struct drm_property *property = NULL;
6bfc56aa 3630 int ret;
f453ba04
DA		 3631
3632 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3633 if (!property)
3634 return NULL;
3635
98f75de4
RC		 3636 property->dev = dev;
3637
f453ba04 3638 if (num_values) {
bd3f0ff9
TR		 3639 property->values = kcalloc(num_values, sizeof(uint64_t),
3640 GFP_KERNEL);
f453ba04
DA		 3641 if (!property->values)
3642 goto fail;
3643 }
3644
6bfc56aa
VS		 3645 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3646 if (ret)
3647 goto fail;
3648
f453ba04
DA		 3649 property->flags = flags;
3650 property->num_values = num_values;
3758b341 3651 INIT_LIST_HEAD(&property->enum_list);
f453ba04 3652
471dd2ef 3653 if (name) {
f453ba04 3654 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3655 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3656 }
f453ba04
DA		 3657
3658 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3659
3660 WARN_ON(!drm_property_type_valid(property));
3661
f453ba04
DA		 3662 return property;
3663fail:
6bfc56aa 3664 kfree(property->values);
f453ba04
DA		 3665 kfree(property);
3666 return NULL;
3667}
3668EXPORT_SYMBOL(drm_property_create);
3669
c8e32cc1 3670/**
2aa9d2bc 3671 * drm_property_create_enum - create a new enumeration property type
c8e32cc1
DV		 3672 * @dev: drm device
3673 * @flags: flags specifying the property type
3674 * @name: name of the property
3675 * @props: enumeration lists with property values
3676 * @num_values: number of pre-defined values
3677 *
3678 * This creates a new generic drm property which can then be attached to a drm
3679 * object with drm_object_attach_property. The returned property object must be
3680 * freed with drm_property_destroy.
3681 *
3682 * Userspace is only allowed to set one of the predefined values for enumeration
3683 * properties.
3684 *
3685 * Returns:
3686 * A pointer to the newly created property on success, NULL on failure.
3687 */
4a67d391
SH		 3688struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3689 const char *name,
3690 const struct drm_prop_enum_list *props,
3691 int num_values)
3692{
3693 struct drm_property *property;
3694 int i, ret;
3695
3696 flags |= DRM_MODE_PROP_ENUM;
3697
3698 property = drm_property_create(dev, flags, name, num_values);
3699 if (!property)
3700 return NULL;
3701
3702 for (i = 0; i < num_values; i++) {
3703 ret = drm_property_add_enum(property, i,
3704 props[i].type,
3705 props[i].name);
3706 if (ret) {
3707 drm_property_destroy(dev, property);
3708 return NULL;
3709 }
3710 }
3711
3712 return property;
3713}
3714EXPORT_SYMBOL(drm_property_create_enum);
3715
c8e32cc1 3716/**
2aa9d2bc 3717 * drm_property_create_bitmask - create a new bitmask property type
c8e32cc1
DV		 3718 * @dev: drm device
3719 * @flags: flags specifying the property type
3720 * @name: name of the property
3721 * @props: enumeration lists with property bitflags
295ee853
DV		 3722 * @num_props: size of the @props array
3723 * @supported_bits: bitmask of all supported enumeration values
c8e32cc1 3724 *
295ee853 3725 * This creates a new bitmask drm property which can then be attached to a drm
c8e32cc1
DV		 3726 * object with drm_object_attach_property. The returned property object must be
3727 * freed with drm_property_destroy.
3728 *
3729 * Compared to plain enumeration properties userspace is allowed to set any
3730 * or'ed together combination of the predefined property bitflag values
3731 *
3732 * Returns:
3733 * A pointer to the newly created property on success, NULL on failure.
3734 */
49e27545
RC		 3735struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3736 int flags, const char *name,
3737 const struct drm_prop_enum_list *props,
7689ffb3
VS		 3738 int num_props,
3739 uint64_t supported_bits)
49e27545
RC		 3740{
3741 struct drm_property *property;
7689ffb3
VS		 3742 int i, ret, index = 0;
3743 int num_values = hweight64(supported_bits);
49e27545
RC		 3744
3745 flags |= DRM_MODE_PROP_BITMASK;
3746
3747 property = drm_property_create(dev, flags, name, num_values);
3748 if (!property)
3749 return NULL;
7689ffb3
VS		 3750 for (i = 0; i < num_props; i++) {
3751 if (!(supported_bits & (1ULL << props[i].type)))
3752 continue;
49e27545 3753
7689ffb3
VS		 3754 if (WARN_ON(index >= num_values)) {
3755 drm_property_destroy(dev, property);
3756 return NULL;
3757 }
3758
3759 ret = drm_property_add_enum(property, index++,
49e27545
RC		 3760 props[i].type,
3761 props[i].name);
3762 if (ret) {
3763 drm_property_destroy(dev, property);
3764 return NULL;
3765 }
3766 }
3767
3768 return property;
3769}
3770EXPORT_SYMBOL(drm_property_create_bitmask);
3771
ebc44cf3
RC		 3772static struct drm_property *property_create_range(struct drm_device *dev,
3773 int flags, const char *name,
3774 uint64_t min, uint64_t max)
3775{
3776 struct drm_property *property;
3777
3778 property = drm_property_create(dev, flags, name, 2);
3779 if (!property)
3780 return NULL;
3781
3782 property->values[0] = min;
3783 property->values[1] = max;
3784
3785 return property;
3786}
3787
c8e32cc1 3788/**
960cd9d4 3789 * drm_property_create_range - create a new unsigned ranged property type
c8e32cc1
DV		 3790 * @dev: drm device
3791 * @flags: flags specifying the property type
3792 * @name: name of the property
3793 * @min: minimum value of the property
3794 * @max: maximum value of the property
3795 *
3796 * This creates a new generic drm property which can then be attached to a drm
3797 * object with drm_object_attach_property. The returned property object must be
3798 * freed with drm_property_destroy.
3799 *
960cd9d4
DV		 3800 * Userspace is allowed to set any unsigned integer value in the (min, max)
3801 * range inclusive.
c8e32cc1
DV		 3802 *
3803 * Returns:
3804 * A pointer to the newly created property on success, NULL on failure.
3805 */
d9bc3c02
SH		 3806struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3807 const char *name,
3808 uint64_t min, uint64_t max)
3809{
ebc44cf3
RC		 3810 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3811 name, min, max);
d9bc3c02
SH		 3812}
3813EXPORT_SYMBOL(drm_property_create_range);
3814
960cd9d4
DV		 3815/**
3816 * drm_property_create_signed_range - create a new signed ranged property type
3817 * @dev: drm device
3818 * @flags: flags specifying the property type
3819 * @name: name of the property
3820 * @min: minimum value of the property
3821 * @max: maximum value 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 * Userspace is allowed to set any signed integer value in the (min, max)
3828 * range inclusive.
3829 *
3830 * Returns:
3831 * A pointer to the newly created property on success, NULL on failure.
3832 */
ebc44cf3
RC		 3833struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3834 int flags, const char *name,
3835 int64_t min, int64_t max)
3836{
3837 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3838 name, I642U64(min), I642U64(max));
3839}
3840EXPORT_SYMBOL(drm_property_create_signed_range);
3841
960cd9d4
DV		 3842/**
3843 * drm_property_create_object - create a new object property type
3844 * @dev: drm device
3845 * @flags: flags specifying the property type
3846 * @name: name of the property
3847 * @type: object type from DRM_MODE_OBJECT_* defines
3848 *
3849 * This creates a new generic drm property which can then be attached to a drm
3850 * object with drm_object_attach_property. The returned property object must be
3851 * freed with drm_property_destroy.
3852 *
3853 * Userspace is only allowed to set this to any property value of the given
3854 * @type. Only useful for atomic properties, which is enforced.
3855 *
3856 * Returns:
3857 * A pointer to the newly created property on success, NULL on failure.
3858 */
98f75de4
RC		 3859struct drm_property *drm_property_create_object(struct drm_device *dev,
3860 int flags, const char *name, uint32_t type)
3861{
3862 struct drm_property *property;
3863
3864 flags |= DRM_MODE_PROP_OBJECT;
3865
960cd9d4
DV		 3866 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3867 return NULL;
3868
98f75de4
RC		 3869 property = drm_property_create(dev, flags, name, 1);
3870 if (!property)
3871 return NULL;
3872
3873 property->values[0] = type;
3874
3875 return property;
3876}
3877EXPORT_SYMBOL(drm_property_create_object);
3878
960cd9d4
DV		 3879/**
3880 * drm_property_create_bool - create a new boolean property type
3881 * @dev: drm device
3882 * @flags: flags specifying the property type
3883 * @name: name of the property
3884 *
3885 * This creates a new generic drm property which can then be attached to a drm
3886 * object with drm_object_attach_property. The returned property object must be
3887 * freed with drm_property_destroy.
3888 *
3889 * This is implemented as a ranged property with only {0, 1} as valid values.
3890 *
3891 * Returns:
3892 * A pointer to the newly created property on success, NULL on failure.
3893 */
3894struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3895 const char *name)
3896{
3897 return drm_property_create_range(dev, flags, name, 0, 1);
3898}
3899EXPORT_SYMBOL(drm_property_create_bool);
3900
c8e32cc1
DV		 3901/**
3902 * drm_property_add_enum - add a possible value to an enumeration property
3903 * @property: enumeration property to change
3904 * @index: index of the new enumeration
3905 * @value: value of the new enumeration
3906 * @name: symbolic name of the new enumeration
3907 *
3908 * This functions adds enumerations to a property.
3909 *
3910 * It's use is deprecated, drivers should use one of the more specific helpers
3911 * to directly create the property with all enumerations already attached.
3912 *
3913 * Returns:
3914 * Zero on success, error code on failure.
3915 */
f453ba04
DA		 3916int drm_property_add_enum(struct drm_property *property, int index,
3917 uint64_t value, const char *name)
3918{
3919 struct drm_property_enum *prop_enum;
3920
5ea22f24
RC		 3921 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3922 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 3923 return -EINVAL;
3924
3925 /*
3926 * Bitmask enum properties have the additional constraint of values
3927 * from 0 to 63
3928 */
5ea22f24
RC		 3929 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3930 (value > 63))
f453ba04
DA		 3931 return -EINVAL;
3932
3758b341
DV		 3933 if (!list_empty(&property->enum_list)) {
3934 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 3935 if (prop_enum->value == value) {
3936 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3937 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3938 return 0;
3939 }
3940 }
3941 }
3942
3943 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3944 if (!prop_enum)
3945 return -ENOMEM;
3946
3947 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3948 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3949 prop_enum->value = value;
3950
3951 property->values[index] = value;
3758b341 3952 list_add_tail(&prop_enum->head, &property->enum_list);
f453ba04
DA		 3953 return 0;
3954}
3955EXPORT_SYMBOL(drm_property_add_enum);
3956
c8e32cc1
DV		 3957/**
3958 * drm_property_destroy - destroy a drm property
3959 * @dev: drm device
3960 * @property: property to destry
3961 *
3962 * This function frees a property including any attached resources like
3963 * enumeration values.
3964 */
f453ba04
DA		 3965void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3966{
3967 struct drm_property_enum *prop_enum, *pt;
3968
3758b341 3969 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
f453ba04
DA		 3970 list_del(&prop_enum->head);
3971 kfree(prop_enum);
3972 }
3973
3974 if (property->num_values)
3975 kfree(property->values);
3976 drm_mode_object_put(dev, &property->base);
3977 list_del(&property->head);
3978 kfree(property);
3979}
3980EXPORT_SYMBOL(drm_property_destroy);
3981
c8e32cc1
DV		 3982/**
3983 * drm_object_attach_property - attach a property to a modeset object
3984 * @obj: drm modeset object
3985 * @property: property to attach
3986 * @init_val: initial value of the property
3987 *
3988 * This attaches the given property to the modeset object with the given initial
3989 * value. Currently this function cannot fail since the properties are stored in
3990 * a statically sized array.
3991 */
c543188a
PZ		 3992void drm_object_attach_property(struct drm_mode_object *obj,
3993 struct drm_property *property,
3994 uint64_t init_val)
3995{
7f88a9be 3996 int count = obj->properties->count;
c543188a 3997
7f88a9be
PZ		 3998 if (count == DRM_OBJECT_MAX_PROPERTY) {
3999 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4000 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4001 "you see this message on the same object type.\n",
4002 obj->type);
4003 return;
c543188a
PZ		 4004 }
4005
b17cd757 4006 obj->properties->properties[count] = property;
7f88a9be
PZ		 4007 obj->properties->values[count] = init_val;
4008 obj->properties->count++;
88a48e29
RC		 4009 if (property->flags & DRM_MODE_PROP_ATOMIC)
4010 obj->properties->atomic_count++;
c543188a
PZ		 4011}
4012EXPORT_SYMBOL(drm_object_attach_property);
4013
c8e32cc1
DV		 4014/**
4015 * drm_object_property_set_value - set the value of a property
4016 * @obj: drm mode object to set property value for
4017 * @property: property to set
4018 * @val: value the property should be set to
4019 *
4020 * This functions sets a given property on a given object. This function only
4021 * changes the software state of the property, it does not call into the
4022 * driver's ->set_property callback.
4023 *
4024 * Returns:
4025 * Zero on success, error code on failure.
4026 */
c543188a
PZ		 4027int drm_object_property_set_value(struct drm_mode_object *obj,
4028 struct drm_property *property, uint64_t val)
4029{
4030 int i;
4031
7f88a9be 4032 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4033 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4034 obj->properties->values[i] = val;
4035 return 0;
4036 }
4037 }
4038
4039 return -EINVAL;
4040}
4041EXPORT_SYMBOL(drm_object_property_set_value);
4042
c8e32cc1
DV		 4043/**
4044 * drm_object_property_get_value - retrieve the value of a property
4045 * @obj: drm mode object to get property value from
4046 * @property: property to retrieve
4047 * @val: storage for the property value
4048 *
4049 * This function retrieves the softare state of the given property for the given
4050 * property. Since there is no driver callback to retrieve the current property
4051 * value this might be out of sync with the hardware, depending upon the driver
4052 * and property.
4053 *
4054 * Returns:
4055 * Zero on success, error code on failure.
4056 */
c543188a
PZ		 4057int drm_object_property_get_value(struct drm_mode_object *obj,
4058 struct drm_property *property, uint64_t *val)
4059{
4060 int i;
4061
88a48e29
RC		 4062 /* read-only properties bypass atomic mechanism and still store
4063 * their value in obj->properties->values[].. mostly to avoid
4064 * having to deal w/ EDID and similar props in atomic paths:
4065 */
4066 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4067 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4068 return drm_atomic_get_property(obj, property, val);
4069
7f88a9be 4070 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4071 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4072 *val = obj->properties->values[i];
4073 return 0;
4074 }
4075 }
4076
4077 return -EINVAL;
4078}
4079EXPORT_SYMBOL(drm_object_property_get_value);
4080
c8e32cc1 4081/**
1a498633 4082 * drm_mode_getproperty_ioctl - get the property metadata
c8e32cc1
DV		 4083 * @dev: DRM device
4084 * @data: ioctl data
4085 * @file_priv: DRM file info
4086 *
1a498633
DV		 4087 * This function retrieves the metadata for a given property, like the different
4088 * possible values for an enum property or the limits for a range property.
4089 *
4090 * Blob properties are special
c8e32cc1
DV		 4091 *
4092 * Called by the user via ioctl.
4093 *
4094 * Returns:
1a498633 4095 * Zero on success, negative errno on failure.
c8e32cc1 4096 */
f453ba04
DA		 4097int drm_mode_getproperty_ioctl(struct drm_device *dev,
4098 void *data, struct drm_file *file_priv)
4099{
f453ba04
DA		 4100 struct drm_mode_get_property *out_resp = data;
4101 struct drm_property *property;
4102 int enum_count = 0;
f453ba04
DA		 4103 int value_count = 0;
4104 int ret = 0, i;
4105 int copied;
4106 struct drm_property_enum *prop_enum;
4107 struct drm_mode_property_enum __user *enum_ptr;
f453ba04 4108 uint64_t __user *values_ptr;
f453ba04 4109
fb3b06c8
DA		 4110 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4111 return -EINVAL;
4112
84849903 4113 drm_modeset_lock_all(dev);
a2b34e22
RC		 4114 property = drm_property_find(dev, out_resp->prop_id);
4115 if (!property) {
f27657f2 4116 ret = -ENOENT;
f453ba04
DA		 4117 goto done;
4118 }
f453ba04 4119
5ea22f24
RC		 4120 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4121 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3758b341 4122 list_for_each_entry(prop_enum, &property->enum_list, head)
f453ba04 4123 enum_count++;
f453ba04
DA		 4124 }
4125
4126 value_count = property->num_values;
4127
4128 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4129 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4130 out_resp->flags = property->flags;
4131
4132 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 4133 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 4134 for (i = 0; i < value_count; i++) {
4135 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4136 ret = -EFAULT;
4137 goto done;
4138 }
4139 }
4140 }
4141 out_resp->count_values = value_count;
4142
5ea22f24
RC		 4143 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4144 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 4145 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4146 copied = 0;
81f6c7f8 4147 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3758b341 4148 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 4149
4150 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4151 ret = -EFAULT;
4152 goto done;
4153 }
4154
4155 if (copy_to_user(&enum_ptr[copied].name,
4156 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4157 ret = -EFAULT;
4158 goto done;
4159 }
4160 copied++;
4161 }
4162 }
4163 out_resp->count_enum_blobs = enum_count;
4164 }
4165
3758b341
DV		 4166 /*
4167 * NOTE: The idea seems to have been to use this to read all the blob
4168 * property values. But nothing ever added them to the corresponding
4169 * list, userspace always used the special-purpose get_blob ioctl to
4170 * read the value for a blob property. It also doesn't make a lot of
4171 * sense to return values here when everything else is just metadata for
4172 * the property itself.
4173 */
4174 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4175 out_resp->count_enum_blobs = 0;
f453ba04 4176done:
84849903 4177 drm_modeset_unlock_all(dev);
f453ba04
DA		 4178 return ret;
4179}
4180
99531d9b
DS		 4181/**
4182 * drm_property_create_blob - Create new blob property
4183 *
4184 * Creates a new blob property for a specified DRM device, optionally
4185 * copying data.
4186 *
4187 * @dev: DRM device to create property for
4188 * @length: Length to allocate for blob data
4189 * @data: If specified, copies data into blob
10e8cb7e
DS		 4190 *
4191 * Returns:
4192 * New blob property with a single reference on success, or an ERR_PTR
4193 * value on failure.
99531d9b 4194 */
6bcacf51 4195struct drm_property_blob *
ecbbe59b 4196drm_property_create_blob(struct drm_device *dev, size_t length,
12e6cecd 4197 const void *data)
f453ba04
DA		 4198{
4199 struct drm_property_blob *blob;
6bfc56aa 4200 int ret;
f453ba04 4201
9ac0934b 4202 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
10e8cb7e 4203 return ERR_PTR(-EINVAL);
f453ba04
DA		 4204
4205 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4206 if (!blob)
10e8cb7e 4207 return ERR_PTR(-ENOMEM);
f453ba04 4208
e2f5d2ea
DS		 4209 /* This must be explicitly initialised, so we can safely call list_del
4210 * on it in the removal handler, even if it isn't in a file list. */
4211 INIT_LIST_HEAD(&blob->head_file);
8fb6e7a5 4212 blob->length = length;
6bcacf51 4213 blob->dev = dev;
8fb6e7a5 4214
99531d9b
DS		 4215 if (data)
4216 memcpy(blob->data, data, length);
8fb6e7a5
DS		 4217
4218 mutex_lock(&dev->mode_config.blob_lock);
4219
6bfc56aa
VS		 4220 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4221 if (ret) {
4222 kfree(blob);
8fb6e7a5 4223 mutex_unlock(&dev->mode_config.blob_lock);
10e8cb7e 4224 return ERR_PTR(-EINVAL);
6bfc56aa
VS		 4225 }
4226
6bcacf51 4227 kref_init(&blob->refcount);
f453ba04 4228
e2f5d2ea
DS		 4229 list_add_tail(&blob->head_global,
4230 &dev->mode_config.property_blob_list);
f453ba04 4231
8fb6e7a5 4232 mutex_unlock(&dev->mode_config.blob_lock);
f453ba04 4233
f453ba04
DA		 4234 return blob;
4235}
6bcacf51 4236EXPORT_SYMBOL(drm_property_create_blob);
f453ba04 4237
6bcacf51
DS		 4238/**
4239 * drm_property_free_blob - Blob property destructor
4240 *
4241 * Internal free function for blob properties; must not be used directly.
4242 *
f102c16e 4243 * @kref: Reference
6bcacf51
DS		 4244 */
4245static void drm_property_free_blob(struct kref *kref)
f453ba04 4246{
6bcacf51
DS		 4247 struct drm_property_blob *blob =
4248 container_of(kref, struct drm_property_blob, refcount);
4249
4250 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4251
e2f5d2ea
DS		 4252 list_del(&blob->head_global);
4253 list_del(&blob->head_file);
6bcacf51 4254 drm_mode_object_put(blob->dev, &blob->base);
8fb6e7a5 4255
f453ba04
DA		 4256 kfree(blob);
4257}
4258
6bcacf51
DS		 4259/**
4260 * drm_property_unreference_blob - Unreference a blob property
4261 *
4262 * Drop a reference on a blob property. May free the object.
4263 *
f102c16e 4264 * @blob: Pointer to blob property
6bcacf51
DS		 4265 */
4266void drm_property_unreference_blob(struct drm_property_blob *blob)
4267{
4268 struct drm_device *dev;
4269
4270 if (!blob)
4271 return;
4272
4273 dev = blob->dev;
4274
4275 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4276
4277 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4278 &dev->mode_config.blob_lock))
4279 mutex_unlock(&dev->mode_config.blob_lock);
4280 else
4281 might_lock(&dev->mode_config.blob_lock);
6bcacf51
DS		 4282}
4283EXPORT_SYMBOL(drm_property_unreference_blob);
4284
4285/**
4286 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4287 *
4288 * Drop a reference on a blob property. May free the object. This must be
4289 * called with blob_lock held.
4290 *
f102c16e 4291 * @blob: Pointer to blob property
6bcacf51
DS		 4292 */
4293static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4294{
4295 if (!blob)
4296 return;
4297
4298 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4299
4300 kref_put(&blob->refcount, drm_property_free_blob);
4301}
4302
e2f5d2ea
DS		 4303/**
4304 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4305 * @dev: DRM device
4306 * @file_priv: destroy all blobs owned by this file handle
4307 */
4308void drm_property_destroy_user_blobs(struct drm_device *dev,
4309 struct drm_file *file_priv)
4310{
4311 struct drm_property_blob *blob, *bt;
4312
4313 mutex_lock(&dev->mode_config.blob_lock);
4314
4315 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4316 list_del_init(&blob->head_file);
4317 drm_property_unreference_blob_locked(blob);
4318 }
4319
4320 mutex_unlock(&dev->mode_config.blob_lock);
4321}
4322
6bcacf51
DS		 4323/**
4324 * drm_property_reference_blob - Take a reference on an existing property
4325 *
4326 * Take a new reference on an existing blob property.
4327 *
f102c16e 4328 * @blob: Pointer to blob property
6bcacf51
DS		 4329 */
4330struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4331{
4332 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4333 kref_get(&blob->refcount);
4334 return blob;
4335}
4336EXPORT_SYMBOL(drm_property_reference_blob);
4337
4338/*
4339 * Like drm_property_lookup_blob, but does not return an additional reference.
4340 * Must be called with blob_lock held.
4341 */
4342static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4343 uint32_t id)
4344{
4345 struct drm_mode_object *obj = NULL;
4346 struct drm_property_blob *blob;
4347
4348 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4349
4350 mutex_lock(&dev->mode_config.idr_mutex);
4351 obj = idr_find(&dev->mode_config.crtc_idr, id);
4352 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4353 blob = NULL;
4354 else
4355 blob = obj_to_blob(obj);
4356 mutex_unlock(&dev->mode_config.idr_mutex);
4357
4358 return blob;
4359}
4360
4361/**
4362 * drm_property_lookup_blob - look up a blob property and take a reference
4363 * @dev: drm device
4364 * @id: id of the blob property
4365 *
4366 * If successful, this takes an additional reference to the blob property.
4367 * callers need to make sure to eventually unreference the returned property
4368 * again, using @drm_property_unreference_blob.
4369 */
4370struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4371 uint32_t id)
4372{
4373 struct drm_property_blob *blob;
4374
4375 mutex_lock(&dev->mode_config.blob_lock);
4376 blob = __drm_property_lookup_blob(dev, id);
4377 if (blob) {
4378 if (!kref_get_unless_zero(&blob->refcount))
4379 blob = NULL;
4380 }
4381 mutex_unlock(&dev->mode_config.blob_lock);
4382
4383 return blob;
4384}
4385EXPORT_SYMBOL(drm_property_lookup_blob);
4386
d2ed3436
DS		 4387/**
4388 * drm_property_replace_global_blob - atomically replace existing blob property
4389 * @dev: drm device
4390 * @replace: location of blob property pointer to be replaced
4391 * @length: length of data for new blob, or 0 for no data
4392 * @data: content for new blob, or NULL for no data
4393 * @obj_holds_id: optional object for property holding blob ID
4394 * @prop_holds_id: optional property holding blob ID
4395 * @return 0 on success or error on failure
4396 *
4397 * This function will atomically replace a global property in the blob list,
4398 * optionally updating a property which holds the ID of that property. It is
4399 * guaranteed to be atomic: no caller will be allowed to see intermediate
4400 * results, and either the entire operation will succeed and clean up the
4401 * previous property, or it will fail and the state will be unchanged.
4402 *
4403 * If length is 0 or data is NULL, no new blob will be created, and the holding
4404 * property, if specified, will be set to 0.
4405 *
4406 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4407 * by holding the relevant modesetting object lock for its parent.
4408 *
4409 * For example, a drm_connector has a 'PATH' property, which contains the ID
4410 * of a blob property with the value of the MST path information. Calling this
4411 * function with replace pointing to the connector's path_blob_ptr, length and
4412 * data set for the new path information, obj_holds_id set to the connector's
4413 * base object, and prop_holds_id set to the path property name, will perform
4414 * a completely atomic update. The access to path_blob_ptr is protected by the
4415 * caller holding a lock on the connector.
4416 */
4417static int drm_property_replace_global_blob(struct drm_device *dev,
4418 struct drm_property_blob **replace,
4419 size_t length,
4420 const void *data,
4421 struct drm_mode_object *obj_holds_id,
4422 struct drm_property *prop_holds_id)
4423{
4424 struct drm_property_blob *new_blob = NULL;
4425 struct drm_property_blob *old_blob = NULL;
4426 int ret;
4427
4428 WARN_ON(replace == NULL);
4429
4430 old_blob = *replace;
4431
4432 if (length && data) {
4433 new_blob = drm_property_create_blob(dev, length, data);
10e8cb7e
DS		 4434 if (IS_ERR(new_blob))
4435 return PTR_ERR(new_blob);
d2ed3436
DS		 4436 }
4437
4438 /* This does not need to be synchronised with blob_lock, as the
4439 * get_properties ioctl locks all modesetting objects, and
4440 * obj_holds_id must be locked before calling here, so we cannot
4441 * have its value out of sync with the list membership modified
4442 * below under blob_lock. */
4443 if (obj_holds_id) {
4444 ret = drm_object_property_set_value(obj_holds_id,
4445 prop_holds_id,
4446 new_blob ?
4447 new_blob->base.id : 0);
4448 if (ret != 0)
4449 goto err_created;
4450 }
4451
ec530829 4452 drm_property_unreference_blob(old_blob);
d2ed3436
DS		 4453 *replace = new_blob;
4454
4455 return 0;
4456
4457err_created:
6bcacf51 4458 drm_property_unreference_blob(new_blob);
d2ed3436
DS		 4459 return ret;
4460}
4461
c8e32cc1
DV		 4462/**
4463 * drm_mode_getblob_ioctl - get the contents of a blob property value
4464 * @dev: DRM device
4465 * @data: ioctl data
4466 * @file_priv: DRM file info
4467 *
4468 * This function retrieves the contents of a blob property. The value stored in
4469 * an object's blob property is just a normal modeset object id.
4470 *
4471 * Called by the user via ioctl.
4472 *
4473 * Returns:
1a498633 4474 * Zero on success, negative errno on failure.
c8e32cc1 4475 */
f453ba04
DA		 4476int drm_mode_getblob_ioctl(struct drm_device *dev,
4477 void *data, struct drm_file *file_priv)
4478{
f453ba04
DA		 4479 struct drm_mode_get_blob *out_resp = data;
4480 struct drm_property_blob *blob;
4481 int ret = 0;
81f6c7f8 4482 void __user *blob_ptr;
f453ba04 4483
fb3b06c8
DA		 4484 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4485 return -EINVAL;
4486
84849903 4487 drm_modeset_lock_all(dev);
8fb6e7a5 4488 mutex_lock(&dev->mode_config.blob_lock);
6bcacf51 4489 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
a2b34e22 4490 if (!blob) {
f27657f2 4491 ret = -ENOENT;
f453ba04
DA		 4492 goto done;
4493 }
f453ba04
DA		 4494
4495 if (out_resp->length == blob->length) {
81f6c7f8 4496 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4dfd909f 4497 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
f453ba04
DA		 4498 ret = -EFAULT;
4499 goto done;
4500 }
4501 }
4502 out_resp->length = blob->length;
4503
4504done:
8fb6e7a5 4505 mutex_unlock(&dev->mode_config.blob_lock);
84849903 4506 drm_modeset_unlock_all(dev);
f453ba04
DA		 4507 return ret;
4508}
4509
e2f5d2ea
DS		 4510/**
4511 * drm_mode_createblob_ioctl - create a new blob property
4512 * @dev: DRM device
4513 * @data: ioctl data
4514 * @file_priv: DRM file info
4515 *
4516 * This function creates a new blob property with user-defined values. In order
4517 * to give us sensible validation and checking when creating, rather than at
4518 * every potential use, we also require a type to be provided upfront.
4519 *
4520 * Called by the user via ioctl.
4521 *
4522 * Returns:
4523 * Zero on success, negative errno on failure.
4524 */
4525int drm_mode_createblob_ioctl(struct drm_device *dev,
4526 void *data, struct drm_file *file_priv)
4527{
4528 struct drm_mode_create_blob *out_resp = data;
4529 struct drm_property_blob *blob;
4530 void __user *blob_ptr;
4531 int ret = 0;
4532
4533 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4534 return -EINVAL;
4535
4536 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4537 if (IS_ERR(blob))
4538 return PTR_ERR(blob);
4539
4540 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4541 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4542 ret = -EFAULT;
4543 goto out_blob;
4544 }
4545
4546 /* Dropping the lock between create_blob and our access here is safe
4547 * as only the same file_priv can remove the blob; at this point, it is
4548 * not associated with any file_priv. */
4549 mutex_lock(&dev->mode_config.blob_lock);
4550 out_resp->blob_id = blob->base.id;
8731b269 4551 list_add_tail(&blob->head_file, &file_priv->blobs);
e2f5d2ea
DS		 4552 mutex_unlock(&dev->mode_config.blob_lock);
4553
4554 return 0;
4555
4556out_blob:
4557 drm_property_unreference_blob(blob);
4558 return ret;
4559}
4560
4561/**
4562 * drm_mode_destroyblob_ioctl - destroy a user blob property
4563 * @dev: DRM device
4564 * @data: ioctl data
4565 * @file_priv: DRM file info
4566 *
4567 * Destroy an existing user-defined blob property.
4568 *
4569 * Called by the user via ioctl.
4570 *
4571 * Returns:
4572 * Zero on success, negative errno on failure.
4573 */
4574int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4575 void *data, struct drm_file *file_priv)
4576{
4577 struct drm_mode_destroy_blob *out_resp = data;
4578 struct drm_property_blob *blob = NULL, *bt;
4579 bool found = false;
4580 int ret = 0;
4581
4582 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4583 return -EINVAL;
4584
4585 mutex_lock(&dev->mode_config.blob_lock);
4586 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4587 if (!blob) {
4588 ret = -ENOENT;
4589 goto err;
4590 }
4591
4592 /* Ensure the property was actually created by this user. */
4593 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4594 if (bt == blob) {
4595 found = true;
4596 break;
4597 }
4598 }
4599
4600 if (!found) {
4601 ret = -EPERM;
4602 goto err;
4603 }
4604
4605 /* We must drop head_file here, because we may not be the last
4606 * reference on the blob. */
4607 list_del_init(&blob->head_file);
4608 drm_property_unreference_blob_locked(blob);
4609 mutex_unlock(&dev->mode_config.blob_lock);
4610
4611 return 0;
4612
4613err:
4614 mutex_unlock(&dev->mode_config.blob_lock);
4615 return ret;
4616}
4617
cc7096fb
DA		 4618/**
4619 * drm_mode_connector_set_path_property - set tile property on connector
4620 * @connector: connector to set property on.
d2ed3436 4621 * @path: path to use for property; must not be NULL.
cc7096fb
DA		 4622 *
4623 * This creates a property to expose to userspace to specify a
4624 * connector path. This is mainly used for DisplayPort MST where
4625 * connectors have a topology and we want to allow userspace to give
4626 * them more meaningful names.
4627 *
4628 * Returns:
1a498633 4629 * Zero on success, negative errno on failure.
cc7096fb 4630 */
43aba7eb 4631int drm_mode_connector_set_path_property(struct drm_connector *connector,
12e6cecd 4632 const char *path)
43aba7eb
DA		 4633{
4634 struct drm_device *dev = connector->dev;
ecbbe59b 4635 int ret;
43aba7eb 4636
d2ed3436
DS		 4637 ret = drm_property_replace_global_blob(dev,
4638 &connector->path_blob_ptr,
4639 strlen(path) + 1,
4640 path,
4641 &connector->base,
4642 dev->mode_config.path_property);
43aba7eb
DA		 4643 return ret;
4644}
4645EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4646
6f134d7b
DA		 4647/**
4648 * drm_mode_connector_set_tile_property - set tile property on connector
4649 * @connector: connector to set property on.
4650 *
4651 * This looks up the tile information for a connector, and creates a
4652 * property for userspace to parse if it exists. The property is of
4653 * the form of 8 integers using ':' as a separator.
4654 *
4655 * Returns:
4656 * Zero on success, errno on failure.
4657 */
4658int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4659{
4660 struct drm_device *dev = connector->dev;
6f134d7b 4661 char tile[256];
d2ed3436 4662 int ret;
6f134d7b
DA		 4663
4664 if (!connector->has_tile) {
d2ed3436
DS		 4665 ret = drm_property_replace_global_blob(dev,
4666 &connector->tile_blob_ptr,
4667 0,
4668 NULL,
4669 &connector->base,
4670 dev->mode_config.tile_property);
6f134d7b
DA		 4671 return ret;
4672 }
4673
4674 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4675 connector->tile_group->id, connector->tile_is_single_monitor,
4676 connector->num_h_tile, connector->num_v_tile,
4677 connector->tile_h_loc, connector->tile_v_loc,
4678 connector->tile_h_size, connector->tile_v_size);
6f134d7b 4679
d2ed3436
DS		 4680 ret = drm_property_replace_global_blob(dev,
4681 &connector->tile_blob_ptr,
4682 strlen(tile) + 1,
4683 tile,
4684 &connector->base,
4685 dev->mode_config.tile_property);
6f134d7b
DA		 4686 return ret;
4687}
4688EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4689
c8e32cc1
DV		 4690/**
4691 * drm_mode_connector_update_edid_property - update the edid property of a connector
4692 * @connector: drm connector
4693 * @edid: new value of the edid property
4694 *
4695 * This function creates a new blob modeset object and assigns its id to the
4696 * connector's edid property.
4697 *
4698 * Returns:
1a498633 4699 * Zero on success, negative errno on failure.
c8e32cc1 4700 */
f453ba04 4701int drm_mode_connector_update_edid_property(struct drm_connector *connector,
12e6cecd 4702 const struct edid *edid)
f453ba04
DA		 4703{
4704 struct drm_device *dev = connector->dev;
d2ed3436 4705 size_t size = 0;
ecbbe59b 4706 int ret;
f453ba04 4707
4cf2b281
TW		 4708 /* ignore requests to set edid when overridden */
4709 if (connector->override_edid)
4710 return 0;
4711
d2ed3436 4712 if (edid)
e24ff467 4713 size = EDID_LENGTH * (1 + edid->extensions);
f453ba04 4714
d2ed3436
DS		 4715 ret = drm_property_replace_global_blob(dev,
4716 &connector->edid_blob_ptr,
4717 size,
4718 edid,
4719 &connector->base,
4720 dev->mode_config.edid_property);
f453ba04
DA		 4721 return ret;
4722}
4723EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4724
3843e71f
RC		 4725/* Some properties could refer to dynamic refcnt'd objects, or things that
4726 * need special locking to handle lifetime issues (ie. to ensure the prop
4727 * value doesn't become invalid part way through the property update due to
4728 * race). The value returned by reference via 'obj' should be passed back
4729 * to drm_property_change_valid_put() after the property is set (and the
4730 * object to which the property is attached has a chance to take it's own
4731 * reference).
4732 */
d34f20d6 4733bool drm_property_change_valid_get(struct drm_property *property,
3843e71f 4734 uint64_t value, struct drm_mode_object **ref)
26a34815 4735{
2ca651d1
TR		 4736 int i;
4737
26a34815
PZ		 4738 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4739 return false;
5ea22f24 4740
3843e71f
RC		 4741 *ref = NULL;
4742
5ea22f24 4743 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 4744 if (value < property->values[0] || value > property->values[1])
4745 return false;
4746 return true;
ebc44cf3
RC		 4747 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4748 int64_t svalue = U642I64(value);
4dfd909f 4749
ebc44cf3
RC		 4750 if (svalue < U642I64(property->values[0]) ||
4751 svalue > U642I64(property->values[1]))
4752 return false;
4753 return true;
5ea22f24 4754 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
592c20ee 4755 uint64_t valid_mask = 0;
4dfd909f 4756
49e27545
RC		 4757 for (i = 0; i < property->num_values; i++)
4758 valid_mask |= (1ULL << property->values[i]);
4759 return !(value & ~valid_mask);
5ea22f24 4760 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
6bcacf51
DS		 4761 struct drm_property_blob *blob;
4762
4763 if (value == 0)
4764 return true;
4765
4766 blob = drm_property_lookup_blob(property->dev, value);
4767 if (blob) {
4768 *ref = &blob->base;
4769 return true;
4770 } else {
4771 return false;
4772 }
98f75de4 4773 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
98f75de4
RC		 4774 /* a zero value for an object property translates to null: */
4775 if (value == 0)
4776 return true;
3843e71f
RC		 4777
4778 /* handle refcnt'd objects specially: */
4779 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4780 struct drm_framebuffer *fb;
4781 fb = drm_framebuffer_lookup(property->dev, value);
4782 if (fb) {
4783 *ref = &fb->base;
4784 return true;
4785 } else {
4786 return false;
4787 }
4788 } else {
4789 return _object_find(property->dev, value, property->values[0]) != NULL;
4790 }
26a34815 4791 }
2ca651d1
TR		 4792
4793 for (i = 0; i < property->num_values; i++)
4794 if (property->values[i] == value)
4795 return true;
4796 return false;
26a34815
PZ		 4797}
4798
d34f20d6 4799void drm_property_change_valid_put(struct drm_property *property,
3843e71f
RC		 4800 struct drm_mode_object *ref)
4801{
4802 if (!ref)
4803 return;
4804
4805 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4806 if (property->values[0] == DRM_MODE_OBJECT_FB)
4807 drm_framebuffer_unreference(obj_to_fb(ref));
da9b2a38
DS		 4808 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4809 drm_property_unreference_blob(obj_to_blob(ref));
3843e71f
RC		 4810}
4811
c8e32cc1
DV		 4812/**
4813 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4814 * @dev: DRM device
4815 * @data: ioctl data
4816 * @file_priv: DRM file info
4817 *
4818 * This function sets the current value for a connectors's property. It also
4819 * calls into a driver's ->set_property callback to update the hardware state
4820 *
4821 * Called by the user via ioctl.
4822 *
4823 * Returns:
1a498633 4824 * Zero on success, negative errno on failure.
c8e32cc1 4825 */
f453ba04
DA		 4826int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4827 void *data, struct drm_file *file_priv)
4828{
0057d8dd
PZ		 4829 struct drm_mode_connector_set_property *conn_set_prop = data;
4830 struct drm_mode_obj_set_property obj_set_prop = {
4831 .value = conn_set_prop->value,
4832 .prop_id = conn_set_prop->prop_id,
4833 .obj_id = conn_set_prop->connector_id,
4834 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4835 };
fb3b06c8 4836
0057d8dd
PZ		 4837 /* It does all the locking and checking we need */
4838 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 4839}
4840
c543188a
PZ		 4841static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4842 struct drm_property *property,
4843 uint64_t value)
4844{
4845 int ret = -EINVAL;
4846 struct drm_connector *connector = obj_to_connector(obj);
4847
4848 /* Do DPMS ourselves */
4849 if (property == connector->dev->mode_config.dpms_property) {
3558c112 4850 ret = (*connector->funcs->dpms)(connector, (int)value);
c543188a
PZ		 4851 } else if (connector->funcs->set_property)
4852 ret = connector->funcs->set_property(connector, property, value);
4853
4854 /* store the property value if successful */
4855 if (!ret)
58495563 4856 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 4857 return ret;
4858}
4859
bffd9de0
PZ		 4860static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4861 struct drm_property *property,
4862 uint64_t value)
4863{
4864 int ret = -EINVAL;
4865 struct drm_crtc *crtc = obj_to_crtc(obj);
4866
4867 if (crtc->funcs->set_property)
4868 ret = crtc->funcs->set_property(crtc, property, value);
4869 if (!ret)
4870 drm_object_property_set_value(obj, property, value);
4871
4872 return ret;
4873}
4874
3a5f87c2
TW		 4875/**
4876 * drm_mode_plane_set_obj_prop - set the value of a property
4877 * @plane: drm plane object to set property value for
4878 * @property: property to set
4879 * @value: value the property should be set to
4880 *
4881 * This functions sets a given property on a given plane object. This function
4882 * calls the driver's ->set_property callback and changes the software state of
4883 * the property if the callback succeeds.
4884 *
4885 * Returns:
4886 * Zero on success, error code on failure.
4887 */
4888int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4889 struct drm_property *property,
4890 uint64_t value)
4d93914a
RC		 4891{
4892 int ret = -EINVAL;
3a5f87c2 4893 struct drm_mode_object *obj = &plane->base;
4d93914a
RC		 4894
4895 if (plane->funcs->set_property)
4896 ret = plane->funcs->set_property(plane, property, value);
4897 if (!ret)
4898 drm_object_property_set_value(obj, property, value);
4899
4900 return ret;
4901}
3a5f87c2 4902EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4d93914a 4903
c8e32cc1 4904/**
1a498633 4905 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
c8e32cc1
DV		 4906 * @dev: DRM device
4907 * @data: ioctl data
4908 * @file_priv: DRM file info
4909 *
4910 * This function retrieves the current value for an object's property. Compared
4911 * to the connector specific ioctl this one is extended to also work on crtc and
4912 * plane objects.
4913 *
4914 * Called by the user via ioctl.
4915 *
4916 * Returns:
1a498633 4917 * Zero on success, negative errno on failure.
c8e32cc1 4918 */
c543188a
PZ		 4919int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4920 struct drm_file *file_priv)
4921{
4922 struct drm_mode_obj_get_properties *arg = data;
4923 struct drm_mode_object *obj;
4924 int ret = 0;
c543188a
PZ		 4925
4926 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4927 return -EINVAL;
4928
84849903 4929 drm_modeset_lock_all(dev);
c543188a
PZ		 4930
4931 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4932 if (!obj) {
f27657f2 4933 ret = -ENOENT;
c543188a
PZ		 4934 goto out;
4935 }
4936 if (!obj->properties) {
4937 ret = -EINVAL;
4938 goto out;
4939 }
4940
88a48e29 4941 ret = get_properties(obj, file_priv->atomic,
95cbf110
RC		 4942 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4943 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4944 &arg->count_props);
c543188a 4945
c543188a 4946out:
84849903 4947 drm_modeset_unlock_all(dev);
c543188a
PZ		 4948 return ret;
4949}
4950
c8e32cc1
DV		 4951/**
4952 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4953 * @dev: DRM device
4954 * @data: ioctl data
4955 * @file_priv: DRM file info
4956 *
4957 * This function sets the current value for an object's property. It also calls
4958 * into a driver's ->set_property callback to update the hardware state.
4959 * Compared to the connector specific ioctl this one is extended to also work on
4960 * crtc and plane objects.
4961 *
4962 * Called by the user via ioctl.
4963 *
4964 * Returns:
1a498633 4965 * Zero on success, negative errno on failure.
c8e32cc1 4966 */
c543188a
PZ		 4967int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4968 struct drm_file *file_priv)
4969{
4970 struct drm_mode_obj_set_property *arg = data;
4971 struct drm_mode_object *arg_obj;
4972 struct drm_mode_object *prop_obj;
4973 struct drm_property *property;
3843e71f
RC		 4974 int i, ret = -EINVAL;
4975 struct drm_mode_object *ref;
c543188a
PZ		 4976
4977 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4978 return -EINVAL;
4979
84849903 4980 drm_modeset_lock_all(dev);
c543188a
PZ		 4981
4982 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 4983 if (!arg_obj) {
4984 ret = -ENOENT;
c543188a 4985 goto out;
f27657f2 4986 }
c543188a
PZ		 4987 if (!arg_obj->properties)
4988 goto out;
4989
7f88a9be 4990 for (i = 0; i < arg_obj->properties->count; i++)
b17cd757 4991 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
c543188a
PZ		 4992 break;
4993
7f88a9be 4994 if (i == arg_obj->properties->count)
c543188a
PZ		 4995 goto out;
4996
4997 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4998 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 4999 if (!prop_obj) {
5000 ret = -ENOENT;
c543188a 5001 goto out;
f27657f2 5002 }
c543188a
PZ		 5003 property = obj_to_property(prop_obj);
5004
3843e71f 5005 if (!drm_property_change_valid_get(property, arg->value, &ref))
c543188a
PZ		 5006 goto out;
5007
5008 switch (arg_obj->type) {
5009 case DRM_MODE_OBJECT_CONNECTOR:
5010 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
5011 arg->value);
5012 break;
bffd9de0
PZ		 5013 case DRM_MODE_OBJECT_CRTC:
5014 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
5015 break;
4d93914a 5016 case DRM_MODE_OBJECT_PLANE:
3a5f87c2
TW		 5017 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
5018 property, arg->value);
4d93914a 5019 break;
c543188a
PZ		 5020 }
5021
3843e71f
RC		 5022 drm_property_change_valid_put(property, ref);
5023
c543188a 5024out:
84849903 5025 drm_modeset_unlock_all(dev);
c543188a
PZ		 5026 return ret;
5027}
5028
c8e32cc1
DV		 5029/**
5030 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5031 * @connector: connector to attach
5032 * @encoder: encoder to attach @connector to
5033 *
5034 * This function links up a connector to an encoder. Note that the routing
5035 * restrictions between encoders and crtcs are exposed to userspace through the
5036 * possible_clones and possible_crtcs bitmasks.
5037 *
5038 * Returns:
1a498633 5039 * Zero on success, negative errno on failure.
c8e32cc1 5040 */
f453ba04
DA		 5041int drm_mode_connector_attach_encoder(struct drm_connector *connector,
5042 struct drm_encoder *encoder)
5043{
5044 int i;
5045
eb47fe80
TR		 5046 /*
5047 * In the past, drivers have attempted to model the static association
5048 * of connector to encoder in simple connector/encoder devices using a
5049 * direct assignment of connector->encoder = encoder. This connection
5050 * is a logical one and the responsibility of the core, so drivers are
5051 * expected not to mess with this.
5052 *
5053 * Note that the error return should've been enough here, but a large
5054 * majority of drivers ignores the return value, so add in a big WARN
5055 * to get people's attention.
5056 */
5057 if (WARN_ON(connector->encoder))
5058 return -EINVAL;
5059
f453ba04
DA		 5060 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5061 if (connector->encoder_ids[i] == 0) {
5062 connector->encoder_ids[i] = encoder->base.id;
5063 return 0;
5064 }
5065 }
5066 return -ENOMEM;
5067}
5068EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5069
c8e32cc1
DV		 5070/**
5071 * drm_mode_crtc_set_gamma_size - set the gamma table size
5072 * @crtc: CRTC to set the gamma table size for
5073 * @gamma_size: size of the gamma table
5074 *
5075 * Drivers which support gamma tables should set this to the supported gamma
5076 * table size when initializing the CRTC. Currently the drm core only supports a
5077 * fixed gamma table size.
5078 *
5079 * Returns:
1a498633 5080 * Zero on success, negative errno on failure.
c8e32cc1 5081 */
4cae5b84 5082int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 5083 int gamma_size)
f453ba04
DA		 5084{
5085 crtc->gamma_size = gamma_size;
5086
bd3f0ff9
TR		 5087 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5088 GFP_KERNEL);
f453ba04
DA		 5089 if (!crtc->gamma_store) {
5090 crtc->gamma_size = 0;
4cae5b84 5091 return -ENOMEM;
f453ba04
DA		 5092 }
5093
4cae5b84 5094 return 0;
f453ba04
DA		 5095}
5096EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5097
c8e32cc1
DV		 5098/**
5099 * drm_mode_gamma_set_ioctl - set the gamma table
5100 * @dev: DRM device
5101 * @data: ioctl data
5102 * @file_priv: DRM file info
5103 *
5104 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5105 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5106 *
5107 * Called by the user via ioctl.
5108 *
5109 * Returns:
1a498633 5110 * Zero on success, negative errno on failure.
c8e32cc1 5111 */
f453ba04
DA		 5112int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5113 void *data, struct drm_file *file_priv)
5114{
5115 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 5116 struct drm_crtc *crtc;
5117 void *r_base, *g_base, *b_base;
5118 int size;
5119 int ret = 0;
5120
fb3b06c8
DA		 5121 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5122 return -EINVAL;
5123
84849903 5124 drm_modeset_lock_all(dev);
a2b34e22
RC		 5125 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5126 if (!crtc) {
f27657f2 5127 ret = -ENOENT;
f453ba04
DA		 5128 goto out;
5129 }
f453ba04 5130
ebe0f244
LP		 5131 if (crtc->funcs->gamma_set == NULL) {
5132 ret = -ENOSYS;
5133 goto out;
5134 }
5135
f453ba04
DA		 5136 /* memcpy into gamma store */
5137 if (crtc_lut->gamma_size != crtc->gamma_size) {
5138 ret = -EINVAL;
5139 goto out;
5140 }
5141
5142 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5143 r_base = crtc->gamma_store;
5144 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5145 ret = -EFAULT;
5146 goto out;
5147 }
5148
5149 g_base = r_base + size;
5150 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5151 ret = -EFAULT;
5152 goto out;
5153 }
5154
5155 b_base = g_base + size;
5156 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5157 ret = -EFAULT;
5158 goto out;
5159 }
5160
7203425a 5161 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 5162
5163out:
84849903 5164 drm_modeset_unlock_all(dev);
f453ba04
DA		 5165 return ret;
5166
5167}
5168
c8e32cc1
DV		 5169/**
5170 * drm_mode_gamma_get_ioctl - get the gamma table
5171 * @dev: DRM device
5172 * @data: ioctl data
5173 * @file_priv: DRM file info
5174 *
5175 * Copy the current gamma table into the storage provided. This also provides
5176 * the gamma table size the driver expects, which can be used to size the
5177 * allocated storage.
5178 *
5179 * Called by the user via ioctl.
5180 *
5181 * Returns:
1a498633 5182 * Zero on success, negative errno on failure.
c8e32cc1 5183 */
f453ba04
DA		 5184int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5185 void *data, struct drm_file *file_priv)
5186{
5187 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 5188 struct drm_crtc *crtc;
5189 void *r_base, *g_base, *b_base;
5190 int size;
5191 int ret = 0;
5192
fb3b06c8
DA		 5193 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5194 return -EINVAL;
5195
84849903 5196 drm_modeset_lock_all(dev);
a2b34e22
RC		 5197 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5198 if (!crtc) {
f27657f2 5199 ret = -ENOENT;
f453ba04
DA		 5200 goto out;
5201 }
f453ba04
DA		 5202
5203 /* memcpy into gamma store */
5204 if (crtc_lut->gamma_size != crtc->gamma_size) {
5205 ret = -EINVAL;
5206 goto out;
5207 }
5208
5209 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5210 r_base = crtc->gamma_store;
5211 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5212 ret = -EFAULT;
5213 goto out;
5214 }
5215
5216 g_base = r_base + size;
5217 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5218 ret = -EFAULT;
5219 goto out;
5220 }
5221
5222 b_base = g_base + size;
5223 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5224 ret = -EFAULT;
5225 goto out;
5226 }
5227out:
84849903 5228 drm_modeset_unlock_all(dev);
f453ba04
DA		 5229 return ret;
5230}
d91d8a3f 5231
c8e32cc1
DV		 5232/**
5233 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5234 * @dev: DRM device
5235 * @data: ioctl data
5236 * @file_priv: DRM file info
5237 *
5238 * This schedules an asynchronous update on a given CRTC, called page flip.
5239 * Optionally a drm event is generated to signal the completion of the event.
5240 * Generic drivers cannot assume that a pageflip with changed framebuffer
5241 * properties (including driver specific metadata like tiling layout) will work,
5242 * but some drivers support e.g. pixel format changes through the pageflip
5243 * ioctl.
5244 *
5245 * Called by the user via ioctl.
5246 *
5247 * Returns:
1a498633 5248 * Zero on success, negative errno on failure.
c8e32cc1 5249 */
d91d8a3f
KH		 5250int drm_mode_page_flip_ioctl(struct drm_device *dev,
5251 void *data, struct drm_file *file_priv)
5252{
5253 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 5254 struct drm_crtc *crtc;
3d30a59b 5255 struct drm_framebuffer *fb = NULL;
d91d8a3f
KH		 5256 struct drm_pending_vblank_event *e = NULL;
5257 unsigned long flags;
5258 int ret = -EINVAL;
5259
5260 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5261 page_flip->reserved != 0)
5262 return -EINVAL;
5263
62f2104f
KP		 5264 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5265 return -EINVAL;
5266
a2b34e22
RC		 5267 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5268 if (!crtc)
f27657f2 5269 return -ENOENT;
d91d8a3f 5270
4d02e2de 5271 drm_modeset_lock_crtc(crtc, crtc->primary);
f4510a27 5272 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 5273 /* The framebuffer is currently unbound, presumably
5274 * due to a hotplug event, that userspace has not
5275 * yet discovered.
5276 */
5277 ret = -EBUSY;
5278 goto out;
5279 }
5280
d91d8a3f
KH		 5281 if (crtc->funcs->page_flip == NULL)
5282 goto out;
5283
786b99ed 5284 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 5285 if (!fb) {
5286 ret = -ENOENT;
d91d8a3f 5287 goto out;
37c4e705 5288 }
d91d8a3f 5289
2afa701d
VS		 5290 if (crtc->state) {
5291 const struct drm_plane_state *state = crtc->primary->state;
5292
5293 ret = check_src_coords(state->src_x, state->src_y,
5294 state->src_w, state->src_h, fb);
5295 } else {
5296 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5297 }
c11e9283 5298 if (ret)
5f61bb42 5299 goto out;
5f61bb42 5300
f4510a27 5301 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 5302 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5303 ret = -EINVAL;
5304 goto out;
5305 }
5306
d91d8a3f
KH		 5307 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5308 ret = -ENOMEM;
5309 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5310 if (file_priv->event_space < sizeof(e->event)) {
d91d8a3f
KH		 5311 spin_unlock_irqrestore(&dev->event_lock, flags);
5312 goto out;
5313 }
f76511b9 5314 file_priv->event_space -= sizeof(e->event);
d91d8a3f
KH		 5315 spin_unlock_irqrestore(&dev->event_lock, flags);
5316
f76511b9 5317 e = kzalloc(sizeof(*e), GFP_KERNEL);
d91d8a3f
KH		 5318 if (e == NULL) {
5319 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5320 file_priv->event_space += sizeof(e->event);
d91d8a3f
KH		 5321 spin_unlock_irqrestore(&dev->event_lock, flags);
5322 goto out;
5323 }
5324
7bd4d7be 5325 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
f76511b9 5326 e->event.base.length = sizeof(e->event);
d91d8a3f
KH		 5327 e->event.user_data = page_flip->user_data;
5328 e->base.event = &e->event.base;
5329 e->base.file_priv = file_priv;
5330 e->base.destroy =
5331 (void (*) (struct drm_pending_event *)) kfree;
5332 }
5333
3d30a59b 5334 crtc->primary->old_fb = crtc->primary->fb;
ed8d1975 5335 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 5336 if (ret) {
aef6a7ee
JS		 5337 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5338 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 5339 file_priv->event_space += sizeof(e->event);
aef6a7ee
JS		 5340 spin_unlock_irqrestore(&dev->event_lock, flags);
5341 kfree(e);
5342 }
b0d12325 5343 /* Keep the old fb, don't unref it. */
3d30a59b 5344 crtc->primary->old_fb = NULL;
b0d12325 5345 } else {
3cb43cc0 5346 crtc->primary->fb = fb;
b0d12325
DV		 5347 /* Unref only the old framebuffer. */
5348 fb = NULL;
d91d8a3f
KH		 5349 }
5350
5351out:
b0d12325
DV		 5352 if (fb)
5353 drm_framebuffer_unreference(fb);
3d30a59b
DV		 5354 if (crtc->primary->old_fb)
5355 drm_framebuffer_unreference(crtc->primary->old_fb);
5356 crtc->primary->old_fb = NULL;
d059f652 5357 drm_modeset_unlock_crtc(crtc);
b4d5e7d1 5358
d91d8a3f
KH		 5359 return ret;
5360}
eb033556 5361
c8e32cc1
DV		 5362/**
5363 * drm_mode_config_reset - call ->reset callbacks
5364 * @dev: drm device
5365 *
5366 * This functions calls all the crtc's, encoder's and connector's ->reset
5367 * callback. Drivers can use this in e.g. their driver load or resume code to
5368 * reset hardware and software state.
5369 */
eb033556
CW		 5370void drm_mode_config_reset(struct drm_device *dev)
5371{
5372 struct drm_crtc *crtc;
2a0d7cfd 5373 struct drm_plane *plane;
eb033556
CW		 5374 struct drm_encoder *encoder;
5375 struct drm_connector *connector;
5376
e4f62546 5377 drm_for_each_plane(plane, dev)
2a0d7cfd
DV		 5378 if (plane->funcs->reset)
5379 plane->funcs->reset(plane);
5380
e4f62546 5381 drm_for_each_crtc(crtc, dev)
eb033556
CW		 5382 if (crtc->funcs->reset)
5383 crtc->funcs->reset(crtc);
5384
e4f62546 5385 drm_for_each_encoder(encoder, dev)
eb033556
CW		 5386 if (encoder->funcs->reset)
5387 encoder->funcs->reset(encoder);
5388
f8c2ba31 5389 mutex_lock(&dev->mode_config.mutex);
4eebf60b 5390 drm_for_each_connector(connector, dev)
eb033556
CW		 5391 if (connector->funcs->reset)
5392 connector->funcs->reset(connector);
f8c2ba31 5393 mutex_unlock(&dev->mode_config.mutex);
eb033556
CW		 5394}
5395EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 5396
c8e32cc1
DV		 5397/**
5398 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5399 * @dev: DRM device
5400 * @data: ioctl data
5401 * @file_priv: DRM file info
5402 *
5403 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5404 * TTM or something else entirely) and returns the resulting buffer handle. This
5405 * handle can then be wrapped up into a framebuffer modeset object.
5406 *
5407 * Note that userspace is not allowed to use such objects for render
5408 * acceleration - drivers must create their own private ioctls for such a use
5409 * case.
5410 *
5411 * Called by the user via ioctl.
5412 *
5413 * Returns:
1a498633 5414 * Zero on success, negative errno on failure.
c8e32cc1 5415 */
ff72145b
DA		 5416int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5417 void *data, struct drm_file *file_priv)
5418{
5419 struct drm_mode_create_dumb *args = data;
b28cd41f 5420 u32 cpp, stride, size;
ff72145b
DA		 5421
5422 if (!dev->driver->dumb_create)
5423 return -ENOSYS;
b28cd41f
DH		 5424 if (!args->width || !args->height || !args->bpp)
5425 return -EINVAL;
5426
5427 /* overflow checks for 32bit size calculations */
00e72089 5428 /* NOTE: DIV_ROUND_UP() can overflow */
b28cd41f 5429 cpp = DIV_ROUND_UP(args->bpp, 8);
00e72089 5430 if (!cpp || cpp > 0xffffffffU / args->width)
b28cd41f
DH		 5431 return -EINVAL;
5432 stride = cpp * args->width;
5433 if (args->height > 0xffffffffU / stride)
5434 return -EINVAL;
5435
5436 /* test for wrap-around */
5437 size = args->height * stride;
5438 if (PAGE_ALIGN(size) == 0)
5439 return -EINVAL;
5440
f6085952
TR		 5441 /*
5442 * handle, pitch and size are output parameters. Zero them out to
5443 * prevent drivers from accidentally using uninitialized data. Since
5444 * not all existing userspace is clearing these fields properly we
5445 * cannot reject IOCTL with garbage in them.
5446 */
5447 args->handle = 0;
5448 args->pitch = 0;
5449 args->size = 0;
5450
ff72145b
DA		 5451 return dev->driver->dumb_create(file_priv, dev, args);
5452}
5453
c8e32cc1
DV		 5454/**
5455 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5456 * @dev: DRM device
5457 * @data: ioctl data
5458 * @file_priv: DRM file info
5459 *
5460 * Allocate an offset in the drm device node's address space to be able to
5461 * memory map a dumb buffer.
5462 *
5463 * Called by the user via ioctl.
5464 *
5465 * Returns:
1a498633 5466 * Zero on success, negative errno on failure.
c8e32cc1 5467 */
ff72145b
DA		 5468int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5469 void *data, struct drm_file *file_priv)
5470{
5471 struct drm_mode_map_dumb *args = data;
5472
5473 /* call driver ioctl to get mmap offset */
5474 if (!dev->driver->dumb_map_offset)
5475 return -ENOSYS;
5476
5477 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5478}
5479
c8e32cc1
DV		 5480/**
5481 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5482 * @dev: DRM device
5483 * @data: ioctl data
5484 * @file_priv: DRM file info
5485 *
5486 * This destroys the userspace handle for the given dumb backing storage buffer.
5487 * Since buffer objects must be reference counted in the kernel a buffer object
5488 * won't be immediately freed if a framebuffer modeset object still uses it.
5489 *
5490 * Called by the user via ioctl.
5491 *
5492 * Returns:
1a498633 5493 * Zero on success, negative errno on failure.
c8e32cc1 5494 */
ff72145b
DA		 5495int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5496 void *data, struct drm_file *file_priv)
5497{
5498 struct drm_mode_destroy_dumb *args = data;
5499
5500 if (!dev->driver->dumb_destroy)
5501 return -ENOSYS;
5502
5503 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5504}
248dbc23 5505
c8e32cc1
DV		 5506/**
5507 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5508 * @format: pixel format (DRM_FORMAT_*)
5509 * @depth: storage for the depth value
5510 * @bpp: storage for the bpp value
5511 *
5512 * This only supports RGB formats here for compat with code that doesn't use
5513 * pixel formats directly yet.
248dbc23
DA		 5514 */
5515void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5516 int *bpp)
5517{
5518 switch (format) {
c51a6bc5 5519 case DRM_FORMAT_C8:
04b3924d
VS		 5520 case DRM_FORMAT_RGB332:
5521 case DRM_FORMAT_BGR233:
248dbc23
DA		 5522 *depth = 8;
5523 *bpp = 8;
5524 break;
04b3924d
VS		 5525 case DRM_FORMAT_XRGB1555:
5526 case DRM_FORMAT_XBGR1555:
5527 case DRM_FORMAT_RGBX5551:
5528 case DRM_FORMAT_BGRX5551:
5529 case DRM_FORMAT_ARGB1555:
5530 case DRM_FORMAT_ABGR1555:
5531 case DRM_FORMAT_RGBA5551:
5532 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 5533 *depth = 15;
5534 *bpp = 16;
5535 break;
04b3924d
VS		 5536 case DRM_FORMAT_RGB565:
5537 case DRM_FORMAT_BGR565:
248dbc23
DA		 5538 *depth = 16;
5539 *bpp = 16;
5540 break;
04b3924d
VS		 5541 case DRM_FORMAT_RGB888:
5542 case DRM_FORMAT_BGR888:
5543 *depth = 24;
5544 *bpp = 24;
5545 break;
5546 case DRM_FORMAT_XRGB8888:
5547 case DRM_FORMAT_XBGR8888:
5548 case DRM_FORMAT_RGBX8888:
5549 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 5550 *depth = 24;
5551 *bpp = 32;
5552 break;
04b3924d
VS		 5553 case DRM_FORMAT_XRGB2101010:
5554 case DRM_FORMAT_XBGR2101010:
5555 case DRM_FORMAT_RGBX1010102:
5556 case DRM_FORMAT_BGRX1010102:
5557 case DRM_FORMAT_ARGB2101010:
5558 case DRM_FORMAT_ABGR2101010:
5559 case DRM_FORMAT_RGBA1010102:
5560 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 5561 *depth = 30;
5562 *bpp = 32;
5563 break;
04b3924d
VS		 5564 case DRM_FORMAT_ARGB8888:
5565 case DRM_FORMAT_ABGR8888:
5566 case DRM_FORMAT_RGBA8888:
5567 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 5568 *depth = 32;
5569 *bpp = 32;
5570 break;
5571 default:
23c453a4
VS		 5572 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5573 drm_get_format_name(format));
248dbc23
DA		 5574 *depth = 0;
5575 *bpp = 0;
5576 break;
5577 }
5578}
5579EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 5580
5581/**
5582 * drm_format_num_planes - get the number of planes for format
5583 * @format: pixel format (DRM_FORMAT_*)
5584 *
c8e32cc1 5585 * Returns:
141670e9
VS		 5586 * The number of planes used by the specified pixel format.
5587 */
5588int drm_format_num_planes(uint32_t format)
5589{
5590 switch (format) {
5591 case DRM_FORMAT_YUV410:
5592 case DRM_FORMAT_YVU410:
5593 case DRM_FORMAT_YUV411:
5594 case DRM_FORMAT_YVU411:
5595 case DRM_FORMAT_YUV420:
5596 case DRM_FORMAT_YVU420:
5597 case DRM_FORMAT_YUV422:
5598 case DRM_FORMAT_YVU422:
5599 case DRM_FORMAT_YUV444:
5600 case DRM_FORMAT_YVU444:
5601 return 3;
5602 case DRM_FORMAT_NV12:
5603 case DRM_FORMAT_NV21:
5604 case DRM_FORMAT_NV16:
5605 case DRM_FORMAT_NV61:
ba623f6a
LP		 5606 case DRM_FORMAT_NV24:
5607 case DRM_FORMAT_NV42:
141670e9
VS		 5608 return 2;
5609 default:
5610 return 1;
5611 }
5612}
5613EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 5614
5615/**
5616 * drm_format_plane_cpp - determine the bytes per pixel value
5617 * @format: pixel format (DRM_FORMAT_*)
5618 * @plane: plane index
5619 *
c8e32cc1 5620 * Returns:
5a86bd55
VS		 5621 * The bytes per pixel value for the specified plane.
5622 */
5623int drm_format_plane_cpp(uint32_t format, int plane)
5624{
5625 unsigned int depth;
5626 int bpp;
5627
5628 if (plane >= drm_format_num_planes(format))
5629 return 0;
5630
5631 switch (format) {
5632 case DRM_FORMAT_YUYV:
5633 case DRM_FORMAT_YVYU:
5634 case DRM_FORMAT_UYVY:
5635 case DRM_FORMAT_VYUY:
5636 return 2;
5637 case DRM_FORMAT_NV12:
5638 case DRM_FORMAT_NV21:
5639 case DRM_FORMAT_NV16:
5640 case DRM_FORMAT_NV61:
ba623f6a
LP		 5641 case DRM_FORMAT_NV24:
5642 case DRM_FORMAT_NV42:
5a86bd55
VS		 5643 return plane ? 2 : 1;
5644 case DRM_FORMAT_YUV410:
5645 case DRM_FORMAT_YVU410:
5646 case DRM_FORMAT_YUV411:
5647 case DRM_FORMAT_YVU411:
5648 case DRM_FORMAT_YUV420:
5649 case DRM_FORMAT_YVU420:
5650 case DRM_FORMAT_YUV422:
5651 case DRM_FORMAT_YVU422:
5652 case DRM_FORMAT_YUV444:
5653 case DRM_FORMAT_YVU444:
5654 return 1;
5655 default:
5656 drm_fb_get_bpp_depth(format, &depth, &bpp);
5657 return bpp >> 3;
5658 }
5659}
5660EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 5661
5662/**
5663 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5664 * @format: pixel format (DRM_FORMAT_*)
5665 *
c8e32cc1 5666 * Returns:
01b68b04
VS		 5667 * The horizontal chroma subsampling factor for the
5668 * specified pixel format.
5669 */
5670int drm_format_horz_chroma_subsampling(uint32_t format)
5671{
5672 switch (format) {
5673 case DRM_FORMAT_YUV411:
5674 case DRM_FORMAT_YVU411:
5675 case DRM_FORMAT_YUV410:
5676 case DRM_FORMAT_YVU410:
5677 return 4;
5678 case DRM_FORMAT_YUYV:
5679 case DRM_FORMAT_YVYU:
5680 case DRM_FORMAT_UYVY:
5681 case DRM_FORMAT_VYUY:
5682 case DRM_FORMAT_NV12:
5683 case DRM_FORMAT_NV21:
5684 case DRM_FORMAT_NV16:
5685 case DRM_FORMAT_NV61:
5686 case DRM_FORMAT_YUV422:
5687 case DRM_FORMAT_YVU422:
5688 case DRM_FORMAT_YUV420:
5689 case DRM_FORMAT_YVU420:
5690 return 2;
5691 default:
5692 return 1;
5693 }
5694}
5695EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5696
5697/**
5698 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5699 * @format: pixel format (DRM_FORMAT_*)
5700 *
c8e32cc1 5701 * Returns:
01b68b04
VS		 5702 * The vertical chroma subsampling factor for the
5703 * specified pixel format.
5704 */
5705int drm_format_vert_chroma_subsampling(uint32_t format)
5706{
5707 switch (format) {
5708 case DRM_FORMAT_YUV410:
5709 case DRM_FORMAT_YVU410:
5710 return 4;
5711 case DRM_FORMAT_YUV420:
5712 case DRM_FORMAT_YVU420:
5713 case DRM_FORMAT_NV12:
5714 case DRM_FORMAT_NV21:
5715 return 2;
5716 default:
5717 return 1;
5718 }
5719}
5720EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3 5721
3c9855f6
VS		 5722/**
5723 * drm_rotation_simplify() - Try to simplify the rotation
5724 * @rotation: Rotation to be simplified
5725 * @supported_rotations: Supported rotations
5726 *
5727 * Attempt to simplify the rotation to a form that is supported.
5728 * Eg. if the hardware supports everything except DRM_REFLECT_X
5729 * one could call this function like this:
5730 *
5731 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5732 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5733 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5734 *
5735 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5736 * transforms the hardware supports, this function may not
5737 * be able to produce a supported transform, so the caller should
5738 * check the result afterwards.
5739 */
5740unsigned int drm_rotation_simplify(unsigned int rotation,
5741 unsigned int supported_rotations)
5742{
5743 if (rotation & ~supported_rotations) {
5744 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
14152c8d
JL		 5745 rotation = (rotation & DRM_REFLECT_MASK) |
5746 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
3c9855f6
VS		 5747 }
5748
5749 return rotation;
5750}
5751EXPORT_SYMBOL(drm_rotation_simplify);
5752
87d24fc3
LP		 5753/**
5754 * drm_mode_config_init - initialize DRM mode_configuration structure
5755 * @dev: DRM device
5756 *
5757 * Initialize @dev's mode_config structure, used for tracking the graphics
5758 * configuration of @dev.
5759 *
5760 * Since this initializes the modeset locks, no locking is possible. Which is no
5761 * problem, since this should happen single threaded at init time. It is the
5762 * driver's problem to ensure this guarantee.
5763 *
5764 */
5765void drm_mode_config_init(struct drm_device *dev)
5766{
5767 mutex_init(&dev->mode_config.mutex);
51fd371b 5768 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5769 mutex_init(&dev->mode_config.idr_mutex);
5770 mutex_init(&dev->mode_config.fb_lock);
8fb6e7a5 5771 mutex_init(&dev->mode_config.blob_lock);
87d24fc3
LP		 5772 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5773 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5774 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5775 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5776 INIT_LIST_HEAD(&dev->mode_config.property_list);
5777 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5778 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5779 idr_init(&dev->mode_config.crtc_idr);
138f9ebb 5780 idr_init(&dev->mode_config.tile_idr);
5fff80bb 5781 ida_init(&dev->mode_config.connector_ida);
87d24fc3
LP		 5782
5783 drm_modeset_lock_all(dev);
6b4959f4 5784 drm_mode_create_standard_properties(dev);
87d24fc3
LP		 5785 drm_modeset_unlock_all(dev);
5786
5787 /* Just to be sure */
5788 dev->mode_config.num_fb = 0;
5789 dev->mode_config.num_connector = 0;
5790 dev->mode_config.num_crtc = 0;
5791 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 5792 dev->mode_config.num_overlay_plane = 0;
5793 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 5794}
5795EXPORT_SYMBOL(drm_mode_config_init);
5796
5797/**
5798 * drm_mode_config_cleanup - free up DRM mode_config info
5799 * @dev: DRM device
5800 *
5801 * Free up all the connectors and CRTCs associated with this DRM device, then
5802 * free up the framebuffers and associated buffer objects.
5803 *
5804 * Note that since this /should/ happen single-threaded at driver/device
5805 * teardown time, no locking is required. It's the driver's job to ensure that
5806 * this guarantee actually holds true.
5807 *
5808 * FIXME: cleanup any dangling user buffer objects too
5809 */
5810void drm_mode_config_cleanup(struct drm_device *dev)
5811{
5812 struct drm_connector *connector, *ot;
5813 struct drm_crtc *crtc, *ct;
5814 struct drm_encoder *encoder, *enct;
5815 struct drm_framebuffer *fb, *fbt;
5816 struct drm_property *property, *pt;
5817 struct drm_property_blob *blob, *bt;
5818 struct drm_plane *plane, *plt;
5819
5820 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5821 head) {
5822 encoder->funcs->destroy(encoder);
5823 }
5824
5825 list_for_each_entry_safe(connector, ot,
5826 &dev->mode_config.connector_list, head) {
5827 connector->funcs->destroy(connector);
5828 }
5829
5830 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5831 head) {
5832 drm_property_destroy(dev, property);
5833 }
5834
5835 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
e2f5d2ea 5836 head_global) {
6bcacf51 5837 drm_property_unreference_blob(blob);
87d24fc3
LP		 5838 }
5839
5840 /*
5841 * Single-threaded teardown context, so it's not required to grab the
5842 * fb_lock to protect against concurrent fb_list access. Contrary, it
5843 * would actually deadlock with the drm_framebuffer_cleanup function.
5844 *
5845 * Also, if there are any framebuffers left, that's a driver leak now,
5846 * so politely WARN about this.
5847 */
5848 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5849 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
c099b55a 5850 drm_framebuffer_free(&fb->refcount);
87d24fc3
LP		 5851 }
5852
5853 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5854 head) {
5855 plane->funcs->destroy(plane);
5856 }
5857
5858 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5859 crtc->funcs->destroy(crtc);
5860 }
5861
5fff80bb 5862 ida_destroy(&dev->mode_config.connector_ida);
138f9ebb 5863 idr_destroy(&dev->mode_config.tile_idr);
87d24fc3 5864 idr_destroy(&dev->mode_config.crtc_idr);
51fd371b 5865 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5866}
5867EXPORT_SYMBOL(drm_mode_config_cleanup);
c1df5f3c
VS		 5868
5869struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5870 unsigned int supported_rotations)
5871{
5872 static const struct drm_prop_enum_list props[] = {
5873 { DRM_ROTATE_0, "rotate-0" },
5874 { DRM_ROTATE_90, "rotate-90" },
5875 { DRM_ROTATE_180, "rotate-180" },
5876 { DRM_ROTATE_270, "rotate-270" },
5877 { DRM_REFLECT_X, "reflect-x" },
5878 { DRM_REFLECT_Y, "reflect-y" },
5879 };
5880
5881 return drm_property_create_bitmask(dev, 0, "rotation",
5882 props, ARRAY_SIZE(props),
5883 supported_rotations);
5884}
5885EXPORT_SYMBOL(drm_mode_create_rotation_property);
138f9ebb
DA		 5886
5887/**
5888 * DOC: Tile group
5889 *
5890 * Tile groups are used to represent tiled monitors with a unique
5891 * integer identifier. Tiled monitors using DisplayID v1.3 have
5892 * a unique 8-byte handle, we store this in a tile group, so we
5893 * have a common identifier for all tiles in a monitor group.
5894 */
5895static void drm_tile_group_free(struct kref *kref)
5896{
5897 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5898 struct drm_device *dev = tg->dev;
5899 mutex_lock(&dev->mode_config.idr_mutex);
5900 idr_remove(&dev->mode_config.tile_idr, tg->id);
5901 mutex_unlock(&dev->mode_config.idr_mutex);
5902 kfree(tg);
5903}
5904
5905/**
5906 * drm_mode_put_tile_group - drop a reference to a tile group.
5907 * @dev: DRM device
5908 * @tg: tile group to drop reference to.
5909 *
5910 * drop reference to tile group and free if 0.
5911 */
5912void drm_mode_put_tile_group(struct drm_device *dev,
5913 struct drm_tile_group *tg)
5914{
5915 kref_put(&tg->refcount, drm_tile_group_free);
5916}
5917
5918/**
5919 * drm_mode_get_tile_group - get a reference to an existing tile group
5920 * @dev: DRM device
5921 * @topology: 8-bytes unique per monitor.
5922 *
5923 * Use the unique bytes to get a reference to an existing tile group.
5924 *
5925 * RETURNS:
5926 * tile group or NULL if not found.
5927 */
5928struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5929 char topology[8])
5930{
5931 struct drm_tile_group *tg;
5932 int id;
5933 mutex_lock(&dev->mode_config.idr_mutex);
5934 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5935 if (!memcmp(tg->group_data, topology, 8)) {
5936 if (!kref_get_unless_zero(&tg->refcount))
5937 tg = NULL;
5938 mutex_unlock(&dev->mode_config.idr_mutex);
5939 return tg;
5940 }
5941 }
5942 mutex_unlock(&dev->mode_config.idr_mutex);
5943 return NULL;
5944}
81ddd1bc 5945EXPORT_SYMBOL(drm_mode_get_tile_group);
138f9ebb
DA		 5946
5947/**
5948 * drm_mode_create_tile_group - create a tile group from a displayid description
5949 * @dev: DRM device
5950 * @topology: 8-bytes unique per monitor.
5951 *
5952 * Create a tile group for the unique monitor, and get a unique
5953 * identifier for the tile group.
5954 *
5955 * RETURNS:
5956 * new tile group or error.
5957 */
5958struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5959 char topology[8])
5960{
5961 struct drm_tile_group *tg;
5962 int ret;
5963
5964 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5965 if (!tg)
5966 return ERR_PTR(-ENOMEM);
5967
5968 kref_init(&tg->refcount);
5969 memcpy(tg->group_data, topology, 8);
5970 tg->dev = dev;
5971
5972 mutex_lock(&dev->mode_config.idr_mutex);
5973 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5974 if (ret >= 0) {
5975 tg->id = ret;
5976 } else {
5977 kfree(tg);
5978 tg = ERR_PTR(ret);
5979 }
5980
5981 mutex_unlock(&dev->mode_config.idr_mutex);
5982 return tg;
5983}
81ddd1bc 5984EXPORT_SYMBOL(drm_mode_create_tile_group);
Linux kernel - Deliverables
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