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drm/i915: Remove vestigal DRI1 ring quiescing code
[deliverable/linux.git] / drivers / gpu / drm / drm_crtc.c
CommitLineData
f453ba04
DA		 1/*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
6ba6d03e 32#include <linux/ctype.h>
f453ba04 33#include <linux/list.h>
5a0e3ad6 34#include <linux/slab.h>
2d1a8a48 35#include <linux/export.h>
760285e7
DH		 36#include <drm/drmP.h>
37#include <drm/drm_crtc.h>
38#include <drm/drm_edid.h>
39#include <drm/drm_fourcc.h>
51fd371b 40#include <drm/drm_modeset_lock.h>
88a48e29 41#include <drm/drm_atomic.h>
f453ba04 42
8bd441b2 43#include "drm_crtc_internal.h"
67d0ec4e 44#include "drm_internal.h"
8bd441b2 45
9a6f5130
CW		 46static struct drm_framebuffer *
47internal_framebuffer_create(struct drm_device *dev,
48 struct drm_mode_fb_cmd2 *r,
49 struct drm_file *file_priv);
c394c2b0 50
f453ba04
DA		 51/* Avoid boilerplate. I'm tired of typing. */
52#define DRM_ENUM_NAME_FN(fnname, list) \
d20d3174 53 const char *fnname(int val) \
f453ba04
DA		 54 { \
55 int i; \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
59 } \
60 return "(unknown)"; \
61 }
62
63/*
64 * Global properties
65 */
4dfd909f
TR		 66static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
67 { DRM_MODE_DPMS_ON, "On" },
f453ba04
DA		 68 { DRM_MODE_DPMS_STANDBY, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
70 { DRM_MODE_DPMS_OFF, "Off" }
71};
72
73DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
74
4dfd909f 75static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
9922ab5a
RC		 76 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
79};
80
f453ba04
DA		 81/*
82 * Optional properties
83 */
4dfd909f 84static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
53bd8389
JB		 85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 89};
90
ff587e45
VK		 91static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
95};
96
f453ba04
DA		 97/*
98 * Non-global properties, but "required" for certain connectors.
99 */
4dfd909f 100static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
f453ba04
DA		 101 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
104};
105
106DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
107
4dfd909f 108static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
f453ba04
DA		 109 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
112};
113
114DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
115 drm_dvi_i_subconnector_enum_list)
116
4dfd909f 117static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
f453ba04
DA		 118 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 123};
124
125DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
126
4dfd909f 127static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
f453ba04
DA		 128 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 132 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 133};
134
135DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
136 drm_tv_subconnector_enum_list)
137
d20d3174 138static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
884840aa
JB		 139 { DRM_MODE_DIRTY_OFF, "Off" },
140 { DRM_MODE_DIRTY_ON, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
142};
143
f453ba04
DA		 144struct drm_conn_prop_enum_list {
145 int type;
d20d3174 146 const char *name;
b21e3afe 147 struct ida ida;
f453ba04
DA		 148};
149
150/*
151 * Connector and encoder types.
152 */
4dfd909f
TR		 153static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
154 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
b21e3afe
IM		 155 { DRM_MODE_CONNECTOR_VGA, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV, "TV" },
168 { DRM_MODE_CONNECTOR_eDP, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
b8923273 170 { DRM_MODE_CONNECTOR_DSI, "DSI" },
f453ba04
DA		 171};
172
4dfd909f
TR		 173static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
174 { DRM_MODE_ENCODER_NONE, "None" },
f453ba04
DA		 175 { DRM_MODE_ENCODER_DAC, "DAC" },
176 { DRM_MODE_ENCODER_TMDS, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 179 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
b8923273 180 { DRM_MODE_ENCODER_DSI, "DSI" },
182407a6 181 { DRM_MODE_ENCODER_DPMST, "DP MST" },
f453ba04
DA		 182};
183
4dfd909f 184static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
ac1bb36c
JB		 185 { SubPixelUnknown, "Unknown" },
186 { SubPixelHorizontalRGB, "Horizontal RGB" },
187 { SubPixelHorizontalBGR, "Horizontal BGR" },
188 { SubPixelVerticalRGB, "Vertical RGB" },
189 { SubPixelVerticalBGR, "Vertical BGR" },
190 { SubPixelNone, "None" },
191};
192
b21e3afe
IM		 193void drm_connector_ida_init(void)
194{
195 int i;
196
197 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
198 ida_init(&drm_connector_enum_list[i].ida);
199}
200
201void drm_connector_ida_destroy(void)
202{
203 int i;
204
205 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
206 ida_destroy(&drm_connector_enum_list[i].ida);
207}
208
c8e32cc1
DV		 209/**
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
212 *
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
215 */
d20d3174 216const char *drm_get_connector_status_name(enum drm_connector_status status)
f453ba04
DA		 217{
218 if (status == connector_status_connected)
219 return "connected";
220 else if (status == connector_status_disconnected)
221 return "disconnected";
222 else
223 return "unknown";
224}
ed7951dc 225EXPORT_SYMBOL(drm_get_connector_status_name);
f453ba04 226
ac1bb36c
JB		 227/**
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
230 *
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
233 */
234const char *drm_get_subpixel_order_name(enum subpixel_order order)
235{
236 return drm_subpixel_enum_list[order].name;
237}
238EXPORT_SYMBOL(drm_get_subpixel_order_name);
239
6ba6d03e
VS		 240static char printable_char(int c)
241{
242 return isascii(c) && isprint(c) ? c : '?';
243}
244
c8e32cc1
DV		 245/**
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
248 *
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
251 *
252 * FIXME: This isn't really multithreading safe.
253 */
d20d3174 254const char *drm_get_format_name(uint32_t format)
6ba6d03e
VS		 255{
256 static char buf[32];
257
258 snprintf(buf, sizeof(buf),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format & 0xff),
261 printable_char((format >> 8) & 0xff),
262 printable_char((format >> 16) & 0xff),
263 printable_char((format >> 24) & 0x7f),
264 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
265 format);
266
267 return buf;
268}
269EXPORT_SYMBOL(drm_get_format_name);
270
2ee39452
DA		 271/*
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
274 */
275static int drm_mode_object_get_reg(struct drm_device *dev,
276 struct drm_mode_object *obj,
277 uint32_t obj_type,
278 bool register_obj)
279{
280 int ret;
281
282 mutex_lock(&dev->mode_config.idr_mutex);
283 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
284 if (ret >= 0) {
285 /*
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
288 */
289 obj->id = ret;
290 obj->type = obj_type;
291 }
292 mutex_unlock(&dev->mode_config.idr_mutex);
293
294 return ret < 0 ? ret : 0;
295}
296
f453ba04 297/**
065a50ed 298 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 299 * @dev: DRM device
065a50ed
DV		 300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
f453ba04 302 *
f453ba04 303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
c8e32cc1
DV		 304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
f453ba04 307 *
c8e32cc1 308 * Returns:
f453ba04
DA		 309 * New unique (relative to other objects in @dev) integer identifier for the
310 * object.
311 */
8bd441b2
DV		 312int drm_mode_object_get(struct drm_device *dev,
313 struct drm_mode_object *obj, uint32_t obj_type)
f453ba04 314{
2ee39452
DA		 315 return drm_mode_object_get_reg(dev, obj, obj_type, true);
316}
f453ba04 317
2ee39452
DA		 318static void drm_mode_object_register(struct drm_device *dev,
319 struct drm_mode_object *obj)
320{
ad2563c2 321 mutex_lock(&dev->mode_config.idr_mutex);
2ee39452 322 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
ad2563c2 323 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 324}
325
326/**
065a50ed 327 * drm_mode_object_put - free a modeset identifer
f453ba04 328 * @dev: DRM device
065a50ed 329 * @object: object to free
f453ba04 330 *
c8e32cc1
DV		 331 * Free @id from @dev's unique identifier pool. Note that despite the _get
332 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
333 * for reference counted modeset objects like framebuffers.
f453ba04 334 */
8bd441b2
DV		 335void drm_mode_object_put(struct drm_device *dev,
336 struct drm_mode_object *object)
f453ba04 337{
ad2563c2 338 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 339 idr_remove(&dev->mode_config.crtc_idr, object->id);
ad2563c2 340 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 341}
342
98f75de4
RC		 343static struct drm_mode_object *_object_find(struct drm_device *dev,
344 uint32_t id, uint32_t type)
345{
346 struct drm_mode_object *obj = NULL;
347
348 mutex_lock(&dev->mode_config.idr_mutex);
349 obj = idr_find(&dev->mode_config.crtc_idr, id);
168c02ec
DV		 350 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
351 obj = NULL;
352 if (obj && obj->id != id)
353 obj = NULL;
354 /* don't leak out unref'd fb's */
355 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
98f75de4
RC		 356 obj = NULL;
357 mutex_unlock(&dev->mode_config.idr_mutex);
358
359 return obj;
360}
361
786b99ed
DV		 362/**
363 * drm_mode_object_find - look up a drm object with static lifetime
364 * @dev: drm device
365 * @id: id of the mode object
366 * @type: type of the mode object
367 *
368 * Note that framebuffers cannot be looked up with this functions - since those
98f75de4
RC		 369 * are reference counted, they need special treatment. Even with
370 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
371 * rather than WARN_ON()).
786b99ed 372 */
7a9c9060
DV		 373struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
374 uint32_t id, uint32_t type)
f453ba04 375{
ad2563c2 376 struct drm_mode_object *obj = NULL;
f453ba04 377
786b99ed
DV		 378 /* Framebuffers are reference counted and need their own lookup
379 * function.*/
380 WARN_ON(type == DRM_MODE_OBJECT_FB);
98f75de4 381 obj = _object_find(dev, id, type);
f453ba04
DA		 382 return obj;
383}
384EXPORT_SYMBOL(drm_mode_object_find);
385
f453ba04
DA		 386/**
387 * drm_framebuffer_init - initialize a framebuffer
388 * @dev: DRM device
065a50ed
DV		 389 * @fb: framebuffer to be initialized
390 * @funcs: ... with these functions
f453ba04 391 *
f453ba04
DA		 392 * Allocates an ID for the framebuffer's parent mode object, sets its mode
393 * functions & device file and adds it to the master fd list.
394 *
4b096ac1
DV		 395 * IMPORTANT:
396 * This functions publishes the fb and makes it available for concurrent access
397 * by other users. Which means by this point the fb _must_ be fully set up -
398 * since all the fb attributes are invariant over its lifetime, no further
399 * locking but only correct reference counting is required.
400 *
c8e32cc1 401 * Returns:
af901ca1 402 * Zero on success, error code on failure.
f453ba04
DA		 403 */
404int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
405 const struct drm_framebuffer_funcs *funcs)
406{
407 int ret;
408
4b096ac1 409 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e 410 kref_init(&fb->refcount);
4b096ac1
DV		 411 INIT_LIST_HEAD(&fb->filp_head);
412 fb->dev = dev;
413 fb->funcs = funcs;
f7eff60e 414
f453ba04 415 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
6bfc56aa 416 if (ret)
4b096ac1 417 goto out;
f453ba04 418
f453ba04
DA		 419 dev->mode_config.num_fb++;
420 list_add(&fb->head, &dev->mode_config.fb_list);
4b096ac1
DV		 421out:
422 mutex_unlock(&dev->mode_config.fb_lock);
f453ba04
DA		 423
424 return 0;
425}
426EXPORT_SYMBOL(drm_framebuffer_init);
427
83f45fc3
DV		 428/* dev->mode_config.fb_lock must be held! */
429static void __drm_framebuffer_unregister(struct drm_device *dev,
430 struct drm_framebuffer *fb)
431{
432 mutex_lock(&dev->mode_config.idr_mutex);
433 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
434 mutex_unlock(&dev->mode_config.idr_mutex);
435
436 fb->base.id = 0;
437}
438
f7eff60e
RC		 439static void drm_framebuffer_free(struct kref *kref)
440{
441 struct drm_framebuffer *fb =
442 container_of(kref, struct drm_framebuffer, refcount);
83f45fc3
DV		 443 struct drm_device *dev = fb->dev;
444
445 /*
446 * The lookup idr holds a weak reference, which has not necessarily been
447 * removed at this point. Check for that.
448 */
449 mutex_lock(&dev->mode_config.fb_lock);
450 if (fb->base.id) {
451 /* Mark fb as reaped and drop idr ref. */
452 __drm_framebuffer_unregister(dev, fb);
453 }
454 mutex_unlock(&dev->mode_config.fb_lock);
455
f7eff60e
RC		 456 fb->funcs->destroy(fb);
457}
458
2b677e8c
DV		 459static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
460 uint32_t id)
461{
462 struct drm_mode_object *obj = NULL;
463 struct drm_framebuffer *fb;
464
465 mutex_lock(&dev->mode_config.idr_mutex);
466 obj = idr_find(&dev->mode_config.crtc_idr, id);
467 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
468 fb = NULL;
469 else
470 fb = obj_to_fb(obj);
471 mutex_unlock(&dev->mode_config.idr_mutex);
472
473 return fb;
474}
475
786b99ed
DV		 476/**
477 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
478 * @dev: drm device
479 * @id: id of the fb object
480 *
481 * If successful, this grabs an additional reference to the framebuffer -
482 * callers need to make sure to eventually unreference the returned framebuffer
c8e32cc1 483 * again, using @drm_framebuffer_unreference.
786b99ed
DV		 484 */
485struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
486 uint32_t id)
487{
786b99ed
DV		 488 struct drm_framebuffer *fb;
489
490 mutex_lock(&dev->mode_config.fb_lock);
2b677e8c 491 fb = __drm_framebuffer_lookup(dev, id);
83f45fc3
DV		 492 if (fb) {
493 if (!kref_get_unless_zero(&fb->refcount))
494 fb = NULL;
495 }
786b99ed
DV		 496 mutex_unlock(&dev->mode_config.fb_lock);
497
498 return fb;
499}
500EXPORT_SYMBOL(drm_framebuffer_lookup);
501
f7eff60e
RC		 502/**
503 * drm_framebuffer_unreference - unref a framebuffer
065a50ed
DV		 504 * @fb: framebuffer to unref
505 *
506 * This functions decrements the fb's refcount and frees it if it drops to zero.
f7eff60e
RC		 507 */
508void drm_framebuffer_unreference(struct drm_framebuffer *fb)
509{
8291272a 510 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 511 kref_put(&fb->refcount, drm_framebuffer_free);
512}
513EXPORT_SYMBOL(drm_framebuffer_unreference);
514
515/**
516 * drm_framebuffer_reference - incr the fb refcnt
065a50ed 517 * @fb: framebuffer
c8e32cc1
DV		 518 *
519 * This functions increments the fb's refcount.
f7eff60e
RC		 520 */
521void drm_framebuffer_reference(struct drm_framebuffer *fb)
522{
8291272a 523 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 524 kref_get(&fb->refcount);
525}
526EXPORT_SYMBOL(drm_framebuffer_reference);
527
36206361
DV		 528/**
529 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
530 * @fb: fb to unregister
531 *
532 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
533 * those used for fbdev. Note that the caller must hold a reference of it's own,
534 * i.e. the object may not be destroyed through this call (since it'll lead to a
535 * locking inversion).
536 */
537void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
538{
2b677e8c
DV		 539 struct drm_device *dev = fb->dev;
540
541 mutex_lock(&dev->mode_config.fb_lock);
542 /* Mark fb as reaped and drop idr ref. */
543 __drm_framebuffer_unregister(dev, fb);
544 mutex_unlock(&dev->mode_config.fb_lock);
36206361
DV		 545}
546EXPORT_SYMBOL(drm_framebuffer_unregister_private);
547
f453ba04
DA		 548/**
549 * drm_framebuffer_cleanup - remove a framebuffer object
550 * @fb: framebuffer to remove
551 *
c8e32cc1
DV		 552 * Cleanup framebuffer. This function is intended to be used from the drivers
553 * ->destroy callback. It can also be used to clean up driver private
554 * framebuffers embedded into a larger structure.
36206361
DV		 555 *
556 * Note that this function does not remove the fb from active usuage - if it is
557 * still used anywhere, hilarity can ensue since userspace could call getfb on
558 * the id and get back -EINVAL. Obviously no concern at driver unload time.
559 *
560 * Also, the framebuffer will not be removed from the lookup idr - for
561 * user-created framebuffers this will happen in in the rmfb ioctl. For
562 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
563 * drm_framebuffer_unregister_private.
f453ba04
DA		 564 */
565void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
f7eff60e
RC		 566{
567 struct drm_device *dev = fb->dev;
8faf6b18 568
4b096ac1 569 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e
RC		 570 list_del(&fb->head);
571 dev->mode_config.num_fb--;
4b096ac1 572 mutex_unlock(&dev->mode_config.fb_lock);
f7eff60e
RC		 573}
574EXPORT_SYMBOL(drm_framebuffer_cleanup);
575
576/**
577 * drm_framebuffer_remove - remove and unreference a framebuffer object
578 * @fb: framebuffer to remove
579 *
f7eff60e 580 * Scans all the CRTCs and planes in @dev's mode_config. If they're
36206361 581 * using @fb, removes it, setting it to NULL. Then drops the reference to the
b62584e3
DV		 582 * passed-in framebuffer. Might take the modeset locks.
583 *
584 * Note that this function optimizes the cleanup away if the caller holds the
585 * last reference to the framebuffer. It is also guaranteed to not take the
586 * modeset locks in this case.
f7eff60e
RC		 587 */
588void drm_framebuffer_remove(struct drm_framebuffer *fb)
f453ba04
DA		 589{
590 struct drm_device *dev = fb->dev;
591 struct drm_crtc *crtc;
8cf5c917 592 struct drm_plane *plane;
5ef5f72f
DA		 593 struct drm_mode_set set;
594 int ret;
f453ba04 595
4b096ac1 596 WARN_ON(!list_empty(&fb->filp_head));
8faf6b18 597
b62584e3
DV		 598 /*
599 * drm ABI mandates that we remove any deleted framebuffers from active
600 * useage. But since most sane clients only remove framebuffers they no
601 * longer need, try to optimize this away.
602 *
603 * Since we're holding a reference ourselves, observing a refcount of 1
604 * means that we're the last holder and can skip it. Also, the refcount
605 * can never increase from 1 again, so we don't need any barriers or
606 * locks.
607 *
608 * Note that userspace could try to race with use and instate a new
609 * usage _after_ we've cleared all current ones. End result will be an
610 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
611 * in this manner.
612 */
613 if (atomic_read(&fb->refcount.refcount) > 1) {
614 drm_modeset_lock_all(dev);
615 /* remove from any CRTC */
616 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
f4510a27 617 if (crtc->primary->fb == fb) {
b62584e3
DV		 618 /* should turn off the crtc */
619 memset(&set, 0, sizeof(struct drm_mode_set));
620 set.crtc = crtc;
621 set.fb = NULL;
622 ret = drm_mode_set_config_internal(&set);
623 if (ret)
624 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
625 }
5ef5f72f 626 }
f453ba04 627
b62584e3 628 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
9125e618
VS		 629 if (plane->fb == fb)
630 drm_plane_force_disable(plane);
8cf5c917 631 }
b62584e3 632 drm_modeset_unlock_all(dev);
8cf5c917
JB		 633 }
634
f7eff60e 635 drm_framebuffer_unreference(fb);
f453ba04 636}
f7eff60e 637EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04 638
51fd371b
RC		 639DEFINE_WW_CLASS(crtc_ww_class);
640
f453ba04 641/**
e13161af
MR		 642 * drm_crtc_init_with_planes - Initialise a new CRTC object with
643 * specified primary and cursor planes.
f453ba04
DA		 644 * @dev: DRM device
645 * @crtc: CRTC object to init
e13161af
MR		 646 * @primary: Primary plane for CRTC
647 * @cursor: Cursor plane for CRTC
f453ba04
DA		 648 * @funcs: callbacks for the new CRTC
649 *
ad6f5c34 650 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 651 *
c8e32cc1 652 * Returns:
6bfc56aa 653 * Zero on success, error code on failure.
f453ba04 654 */
e13161af
MR		 655int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
656 struct drm_plane *primary,
fc1d3e44 657 struct drm_plane *cursor,
e13161af 658 const struct drm_crtc_funcs *funcs)
f453ba04 659{
51fd371b 660 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 661 int ret;
662
f453ba04
DA		 663 crtc->dev = dev;
664 crtc->funcs = funcs;
7c80e128 665 crtc->invert_dimensions = false;
f453ba04 666
51fd371b 667 drm_modeset_lock_init(&crtc->mutex);
6bfc56aa
VS		 668 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
669 if (ret)
baf698b0 670 return ret;
f453ba04 671
bffd9de0
PZ		 672 crtc->base.properties = &crtc->properties;
673
51fd371b
RC		 674 list_add_tail(&crtc->head, &config->crtc_list);
675 config->num_crtc++;
6bfc56aa 676
e13161af 677 crtc->primary = primary;
fc1d3e44 678 crtc->cursor = cursor;
e13161af
MR		 679 if (primary)
680 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
fc1d3e44
MR		 681 if (cursor)
682 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
e13161af 683
eab3bbef
DV		 684 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
685 drm_object_attach_property(&crtc->base, config->prop_active, 0);
686 }
687
baf698b0 688 return 0;
f453ba04 689}
e13161af 690EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 691
692/**
ad6f5c34 693 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 694 * @crtc: CRTC to cleanup
695 *
ad6f5c34
VS		 696 * This function cleans up @crtc and removes it from the DRM mode setting
697 * core. Note that the function does *not* free the crtc structure itself,
698 * this is the responsibility of the caller.
f453ba04
DA		 699 */
700void drm_crtc_cleanup(struct drm_crtc *crtc)
701{
702 struct drm_device *dev = crtc->dev;
703
9e1c156f
SK		 704 kfree(crtc->gamma_store);
705 crtc->gamma_store = NULL;
f453ba04 706
51fd371b
RC		 707 drm_modeset_lock_fini(&crtc->mutex);
708
f453ba04
DA		 709 drm_mode_object_put(dev, &crtc->base);
710 list_del(&crtc->head);
711 dev->mode_config.num_crtc--;
3009c037
TR		 712
713 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
714 if (crtc->state && crtc->funcs->atomic_destroy_state)
715 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
a18c0af1
TR		 716
717 memset(crtc, 0, sizeof(*crtc));
f453ba04
DA		 718}
719EXPORT_SYMBOL(drm_crtc_cleanup);
720
db5f7a6e
RK		 721/**
722 * drm_crtc_index - find the index of a registered CRTC
723 * @crtc: CRTC to find index for
724 *
725 * Given a registered CRTC, return the index of that CRTC within a DRM
726 * device's list of CRTCs.
727 */
728unsigned int drm_crtc_index(struct drm_crtc *crtc)
729{
730 unsigned int index = 0;
731 struct drm_crtc *tmp;
732
733 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
734 if (tmp == crtc)
735 return index;
736
737 index++;
738 }
739
740 BUG();
741}
742EXPORT_SYMBOL(drm_crtc_index);
743
86f422d5 744/*
f453ba04
DA		 745 * drm_mode_remove - remove and free a mode
746 * @connector: connector list to modify
747 * @mode: mode to remove
748 *
f453ba04
DA		 749 * Remove @mode from @connector's mode list, then free it.
750 */
86f422d5
LD		 751static void drm_mode_remove(struct drm_connector *connector,
752 struct drm_display_mode *mode)
f453ba04
DA		 753{
754 list_del(&mode->head);
554f1d78 755 drm_mode_destroy(connector->dev, mode);
f453ba04 756}
f453ba04 757
b5571e9d
BB		 758/**
759 * drm_display_info_set_bus_formats - set the supported bus formats
760 * @info: display info to store bus formats in
e37bfa1a
BB		 761 * @formats: array containing the supported bus formats
762 * @num_formats: the number of entries in the fmts array
b5571e9d
BB		 763 *
764 * Store the supported bus formats in display info structure.
765 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
766 * a full list of available formats.
767 */
768int drm_display_info_set_bus_formats(struct drm_display_info *info,
769 const u32 *formats,
770 unsigned int num_formats)
771{
772 u32 *fmts = NULL;
773
774 if (!formats && num_formats)
775 return -EINVAL;
776
777 if (formats && num_formats) {
778 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
779 GFP_KERNEL);
944579c5 780 if (!fmts)
b5571e9d
BB		 781 return -ENOMEM;
782 }
783
784 kfree(info->bus_formats);
785 info->bus_formats = fmts;
786 info->num_bus_formats = num_formats;
787
788 return 0;
789}
790EXPORT_SYMBOL(drm_display_info_set_bus_formats);
791
eaf99c74
CW		 792/**
793 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
794 * @connector: connector to quwery
eaf99c74
CW		 795 *
796 * The kernel supports per-connector configration of its consoles through
797 * use of the video= parameter. This function parses that option and
798 * extracts the user's specified mode (or enable/disable status) for a
799 * particular connector. This is typically only used during the early fbdev
800 * setup.
801 */
802static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
803{
804 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
805 char *option = NULL;
806
807 if (fb_get_options(connector->name, &option))
808 return;
809
810 if (!drm_mode_parse_command_line_for_connector(option,
811 connector,
812 mode))
813 return;
814
815 if (mode->force) {
816 const char *s;
817
818 switch (mode->force) {
819 case DRM_FORCE_OFF:
820 s = "OFF";
821 break;
822 case DRM_FORCE_ON_DIGITAL:
823 s = "ON - dig";
824 break;
825 default:
826 case DRM_FORCE_ON:
827 s = "ON";
828 break;
829 }
830
831 DRM_INFO("forcing %s connector %s\n", connector->name, s);
832 connector->force = mode->force;
833 }
834
835 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
836 connector->name,
837 mode->xres, mode->yres,
838 mode->refresh_specified ? mode->refresh : 60,
839 mode->rb ? " reduced blanking" : "",
840 mode->margins ? " with margins" : "",
841 mode->interlace ? " interlaced" : "");
842}
843
f453ba04
DA		 844/**
845 * drm_connector_init - Init a preallocated connector
846 * @dev: DRM device
847 * @connector: the connector to init
848 * @funcs: callbacks for this connector
065a50ed 849 * @connector_type: user visible type of the connector
f453ba04 850 *
f453ba04
DA		 851 * Initialises a preallocated connector. Connectors should be
852 * subclassed as part of driver connector objects.
6bfc56aa 853 *
c8e32cc1 854 * Returns:
6bfc56aa 855 * Zero on success, error code on failure.
f453ba04 856 */
6bfc56aa
VS		 857int drm_connector_init(struct drm_device *dev,
858 struct drm_connector *connector,
859 const struct drm_connector_funcs *funcs,
860 int connector_type)
f453ba04 861{
ae16c597 862 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa 863 int ret;
b21e3afe
IM		 864 struct ida *connector_ida =
865 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 866
84849903 867 drm_modeset_lock_all(dev);
f453ba04 868
2ee39452 869 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
6bfc56aa 870 if (ret)
2abdd313 871 goto out_unlock;
6bfc56aa 872
7e3bdf4a 873 connector->base.properties = &connector->properties;
f453ba04
DA		 874 connector->dev = dev;
875 connector->funcs = funcs;
f453ba04
DA		 876 connector->connector_type = connector_type;
877 connector->connector_type_id =
b21e3afe
IM		 878 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
879 if (connector->connector_type_id < 0) {
880 ret = connector->connector_type_id;
2abdd313 881 goto out_put;
b21e3afe 882 }
2abdd313
JN		 883 connector->name =
884 kasprintf(GFP_KERNEL, "%s-%d",
885 drm_connector_enum_list[connector_type].name,
886 connector->connector_type_id);
887 if (!connector->name) {
888 ret = -ENOMEM;
889 goto out_put;
890 }
891
f453ba04
DA		 892 INIT_LIST_HEAD(&connector->probed_modes);
893 INIT_LIST_HEAD(&connector->modes);
894 connector->edid_blob_ptr = NULL;
5e2cb2f6 895 connector->status = connector_status_unknown;
f453ba04 896
eaf99c74
CW		 897 drm_connector_get_cmdline_mode(connector);
898
c7eb76f4
DV		 899 /* We should add connectors at the end to avoid upsetting the connector
900 * index too much. */
ae16c597
RC		 901 list_add_tail(&connector->head, &config->connector_list);
902 config->num_connector++;
f453ba04 903
a7331e5c 904 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 905 drm_object_attach_property(&connector->base,
ae16c597 906 config->edid_property,
a7331e5c 907 0);
f453ba04 908
58495563 909 drm_object_attach_property(&connector->base,
ae16c597
RC		 910 config->dpms_property, 0);
911
912 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
913 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
914 }
f453ba04 915
30f65707
TW		 916 connector->debugfs_entry = NULL;
917
2abdd313
JN		 918out_put:
919 if (ret)
920 drm_mode_object_put(dev, &connector->base);
921
922out_unlock:
84849903 923 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 924
925 return ret;
f453ba04
DA		 926}
927EXPORT_SYMBOL(drm_connector_init);
928
929/**
930 * drm_connector_cleanup - cleans up an initialised connector
931 * @connector: connector to cleanup
932 *
f453ba04
DA		 933 * Cleans up the connector but doesn't free the object.
934 */
935void drm_connector_cleanup(struct drm_connector *connector)
936{
937 struct drm_device *dev = connector->dev;
938 struct drm_display_mode *mode, *t;
939
40d9b043
DA		 940 if (connector->tile_group) {
941 drm_mode_put_tile_group(dev, connector->tile_group);
942 connector->tile_group = NULL;
943 }
944
f453ba04
DA		 945 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
946 drm_mode_remove(connector, mode);
947
948 list_for_each_entry_safe(mode, t, &connector->modes, head)
949 drm_mode_remove(connector, mode);
950
b21e3afe
IM		 951 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
952 connector->connector_type_id);
953
b5571e9d 954 kfree(connector->display_info.bus_formats);
f453ba04 955 drm_mode_object_put(dev, &connector->base);
2abdd313
JN		 956 kfree(connector->name);
957 connector->name = NULL;
f453ba04 958 list_del(&connector->head);
6380c509 959 dev->mode_config.num_connector--;
3009c037
TR		 960
961 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
962 if (connector->state && connector->funcs->atomic_destroy_state)
963 connector->funcs->atomic_destroy_state(connector,
964 connector->state);
a18c0af1
TR		 965
966 memset(connector, 0, sizeof(*connector));
f453ba04
DA		 967}
968EXPORT_SYMBOL(drm_connector_cleanup);
969
10f637bf
DV		 970/**
971 * drm_connector_index - find the index of a registered connector
972 * @connector: connector to find index for
973 *
974 * Given a registered connector, return the index of that connector within a DRM
975 * device's list of connectors.
976 */
977unsigned int drm_connector_index(struct drm_connector *connector)
978{
979 unsigned int index = 0;
980 struct drm_connector *tmp;
c7eb76f4
DV		 981 struct drm_mode_config *config = &connector->dev->mode_config;
982
983 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
10f637bf
DV		 984
985 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
986 if (tmp == connector)
987 return index;
988
989 index++;
990 }
991
992 BUG();
993}
994EXPORT_SYMBOL(drm_connector_index);
995
34ea3d38
TW		 996/**
997 * drm_connector_register - register a connector
998 * @connector: the connector to register
999 *
1000 * Register userspace interfaces for a connector
1001 *
1002 * Returns:
1003 * Zero on success, error code on failure.
1004 */
1005int drm_connector_register(struct drm_connector *connector)
1006{
30f65707
TW		 1007 int ret;
1008
2ee39452
DA		 1009 drm_mode_object_register(connector->dev, &connector->base);
1010
30f65707
TW		 1011 ret = drm_sysfs_connector_add(connector);
1012 if (ret)
1013 return ret;
1014
1015 ret = drm_debugfs_connector_add(connector);
1016 if (ret) {
1017 drm_sysfs_connector_remove(connector);
1018 return ret;
1019 }
1020
1021 return 0;
34ea3d38
TW		 1022}
1023EXPORT_SYMBOL(drm_connector_register);
1024
1025/**
1026 * drm_connector_unregister - unregister a connector
1027 * @connector: the connector to unregister
1028 *
1029 * Unregister userspace interfaces for a connector
1030 */
1031void drm_connector_unregister(struct drm_connector *connector)
1032{
1033 drm_sysfs_connector_remove(connector);
30f65707 1034 drm_debugfs_connector_remove(connector);
34ea3d38
TW		 1035}
1036EXPORT_SYMBOL(drm_connector_unregister);
1037
1038
c8e32cc1
DV		 1039/**
1040 * drm_connector_unplug_all - unregister connector userspace interfaces
1041 * @dev: drm device
1042 *
1043 * This function unregisters all connector userspace interfaces in sysfs. Should
1044 * be call when the device is disconnected, e.g. from an usb driver's
1045 * ->disconnect callback.
1046 */
cbc7e221
DA		 1047void drm_connector_unplug_all(struct drm_device *dev)
1048{
1049 struct drm_connector *connector;
1050
1051 /* taking the mode config mutex ends up in a clash with sysfs */
1052 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
34ea3d38 1053 drm_connector_unregister(connector);
cbc7e221
DA		 1054
1055}
1056EXPORT_SYMBOL(drm_connector_unplug_all);
1057
c8e32cc1
DV		 1058/**
1059 * drm_encoder_init - Init a preallocated encoder
1060 * @dev: drm device
1061 * @encoder: the encoder to init
1062 * @funcs: callbacks for this encoder
1063 * @encoder_type: user visible type of the encoder
1064 *
1065 * Initialises a preallocated encoder. Encoder should be
1066 * subclassed as part of driver encoder objects.
1067 *
1068 * Returns:
1069 * Zero on success, error code on failure.
1070 */
6bfc56aa 1071int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 1072 struct drm_encoder *encoder,
1073 const struct drm_encoder_funcs *funcs,
1074 int encoder_type)
f453ba04 1075{
6bfc56aa
VS		 1076 int ret;
1077
84849903 1078 drm_modeset_lock_all(dev);
f453ba04 1079
6bfc56aa
VS		 1080 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1081 if (ret)
e5748946 1082 goto out_unlock;
f453ba04 1083
6bfc56aa 1084 encoder->dev = dev;
f453ba04
DA		 1085 encoder->encoder_type = encoder_type;
1086 encoder->funcs = funcs;
e5748946
JN		 1087 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1088 drm_encoder_enum_list[encoder_type].name,
1089 encoder->base.id);
1090 if (!encoder->name) {
1091 ret = -ENOMEM;
1092 goto out_put;
1093 }
f453ba04
DA		 1094
1095 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1096 dev->mode_config.num_encoder++;
1097
e5748946
JN		 1098out_put:
1099 if (ret)
1100 drm_mode_object_put(dev, &encoder->base);
1101
1102out_unlock:
84849903 1103 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 1104
1105 return ret;
f453ba04
DA		 1106}
1107EXPORT_SYMBOL(drm_encoder_init);
1108
c8e32cc1
DV		 1109/**
1110 * drm_encoder_cleanup - cleans up an initialised encoder
1111 * @encoder: encoder to cleanup
1112 *
1113 * Cleans up the encoder but doesn't free the object.
1114 */
f453ba04
DA		 1115void drm_encoder_cleanup(struct drm_encoder *encoder)
1116{
1117 struct drm_device *dev = encoder->dev;
4dfd909f 1118
84849903 1119 drm_modeset_lock_all(dev);
f453ba04 1120 drm_mode_object_put(dev, &encoder->base);
e5748946 1121 kfree(encoder->name);
f453ba04 1122 list_del(&encoder->head);
6380c509 1123 dev->mode_config.num_encoder--;
84849903 1124 drm_modeset_unlock_all(dev);
a18c0af1
TR		 1125
1126 memset(encoder, 0, sizeof(*encoder));
f453ba04
DA		 1127}
1128EXPORT_SYMBOL(drm_encoder_cleanup);
1129
35f2c3ae 1130/**
dc415ff9 1131 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1132 * @dev: DRM device
1133 * @plane: plane object to init
1134 * @possible_crtcs: bitmask of possible CRTCs
1135 * @funcs: callbacks for the new plane
1136 * @formats: array of supported formats (%DRM_FORMAT_*)
1137 * @format_count: number of elements in @formats
dc415ff9 1138 * @type: type of plane (overlay, primary, cursor)
35f2c3ae 1139 *
dc415ff9 1140 * Initializes a plane object of type @type.
35f2c3ae 1141 *
c8e32cc1 1142 * Returns:
35f2c3ae
VS		 1143 * Zero on success, error code on failure.
1144 */
dc415ff9
MR		 1145int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1146 unsigned long possible_crtcs,
1147 const struct drm_plane_funcs *funcs,
1148 const uint32_t *formats, uint32_t format_count,
1149 enum drm_plane_type type)
8cf5c917 1150{
6b4959f4 1151 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 1152 int ret;
1153
6bfc56aa
VS		 1154 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1155 if (ret)
baf698b0 1156 return ret;
6bfc56aa 1157
4d02e2de
DV		 1158 drm_modeset_lock_init(&plane->mutex);
1159
4d93914a 1160 plane->base.properties = &plane->properties;
8cf5c917 1161 plane->dev = dev;
8cf5c917 1162 plane->funcs = funcs;
2f6c5389
TR		 1163 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1164 GFP_KERNEL);
8cf5c917
JB		 1165 if (!plane->format_types) {
1166 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1167 drm_mode_object_put(dev, &plane->base);
baf698b0 1168 return -ENOMEM;
8cf5c917
JB		 1169 }
1170
308e5bcb 1171 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1172 plane->format_count = format_count;
1173 plane->possible_crtcs = possible_crtcs;
dc415ff9 1174 plane->type = type;
8cf5c917 1175
6b4959f4
RC		 1176 list_add_tail(&plane->head, &config->plane_list);
1177 config->num_total_plane++;
dc415ff9 1178 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
6b4959f4 1179 config->num_overlay_plane++;
8cf5c917 1180
9922ab5a 1181 drm_object_attach_property(&plane->base,
6b4959f4 1182 config->plane_type_property,
9922ab5a
RC		 1183 plane->type);
1184
6b4959f4
RC		 1185 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1186 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1187 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1188 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1189 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1190 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1191 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1192 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1193 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1194 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1195 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1196 }
1197
baf698b0 1198 return 0;
8cf5c917 1199}
dc415ff9
MR		 1200EXPORT_SYMBOL(drm_universal_plane_init);
1201
1202/**
1203 * drm_plane_init - Initialize a legacy plane
1204 * @dev: DRM device
1205 * @plane: plane object to init
1206 * @possible_crtcs: bitmask of possible CRTCs
1207 * @funcs: callbacks for the new plane
1208 * @formats: array of supported formats (%DRM_FORMAT_*)
1209 * @format_count: number of elements in @formats
1210 * @is_primary: plane type (primary vs overlay)
1211 *
1212 * Legacy API to initialize a DRM plane.
1213 *
1214 * New drivers should call drm_universal_plane_init() instead.
1215 *
1216 * Returns:
1217 * Zero on success, error code on failure.
1218 */
1219int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1220 unsigned long possible_crtcs,
1221 const struct drm_plane_funcs *funcs,
1222 const uint32_t *formats, uint32_t format_count,
1223 bool is_primary)
1224{
1225 enum drm_plane_type type;
1226
1227 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1228 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1229 formats, format_count, type);
1230}
8cf5c917
JB		 1231EXPORT_SYMBOL(drm_plane_init);
1232
35f2c3ae
VS		 1233/**
1234 * drm_plane_cleanup - Clean up the core plane usage
1235 * @plane: plane to cleanup
1236 *
1237 * This function cleans up @plane and removes it from the DRM mode setting
1238 * core. Note that the function does *not* free the plane structure itself,
1239 * this is the responsibility of the caller.
1240 */
8cf5c917
JB		 1241void drm_plane_cleanup(struct drm_plane *plane)
1242{
1243 struct drm_device *dev = plane->dev;
1244
84849903 1245 drm_modeset_lock_all(dev);
8cf5c917
JB		 1246 kfree(plane->format_types);
1247 drm_mode_object_put(dev, &plane->base);
dc415ff9
MR		 1248
1249 BUG_ON(list_empty(&plane->head));
1250
1251 list_del(&plane->head);
1252 dev->mode_config.num_total_plane--;
1253 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1254 dev->mode_config.num_overlay_plane--;
84849903 1255 drm_modeset_unlock_all(dev);
3009c037
TR		 1256
1257 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1258 if (plane->state && plane->funcs->atomic_destroy_state)
1259 plane->funcs->atomic_destroy_state(plane, plane->state);
a18c0af1
TR		 1260
1261 memset(plane, 0, sizeof(*plane));
8cf5c917
JB		 1262}
1263EXPORT_SYMBOL(drm_plane_cleanup);
1264
10f637bf
DV		 1265/**
1266 * drm_plane_index - find the index of a registered plane
1267 * @plane: plane to find index for
1268 *
1269 * Given a registered plane, return the index of that CRTC within a DRM
1270 * device's list of planes.
1271 */
1272unsigned int drm_plane_index(struct drm_plane *plane)
1273{
1274 unsigned int index = 0;
1275 struct drm_plane *tmp;
1276
1277 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1278 if (tmp == plane)
1279 return index;
1280
1281 index++;
1282 }
1283
1284 BUG();
1285}
1286EXPORT_SYMBOL(drm_plane_index);
1287
35f2c3ae
VS		 1288/**
1289 * drm_plane_force_disable - Forcibly disable a plane
1290 * @plane: plane to disable
1291 *
1292 * Forces the plane to be disabled.
1293 *
1294 * Used when the plane's current framebuffer is destroyed,
1295 * and when restoring fbdev mode.
1296 */
9125e618
VS		 1297void drm_plane_force_disable(struct drm_plane *plane)
1298{
1299 int ret;
1300
3d30a59b 1301 if (!plane->fb)
9125e618
VS		 1302 return;
1303
3d30a59b 1304 plane->old_fb = plane->fb;
9125e618 1305 ret = plane->funcs->disable_plane(plane);
731cce48 1306 if (ret) {
9125e618 1307 DRM_ERROR("failed to disable plane with busy fb\n");
3d30a59b 1308 plane->old_fb = NULL;
731cce48
DV		 1309 return;
1310 }
9125e618 1311 /* disconnect the plane from the fb and crtc: */
220dd2bc 1312 drm_framebuffer_unreference(plane->old_fb);
3d30a59b 1313 plane->old_fb = NULL;
9125e618
VS		 1314 plane->fb = NULL;
1315 plane->crtc = NULL;
1316}
1317EXPORT_SYMBOL(drm_plane_force_disable);
1318
6b4959f4 1319static int drm_mode_create_standard_properties(struct drm_device *dev)
f453ba04 1320{
356af0e1 1321 struct drm_property *prop;
f453ba04
DA		 1322
1323 /*
1324 * Standard properties (apply to all connectors)
1325 */
356af0e1 1326 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
f453ba04
DA		 1327 DRM_MODE_PROP_IMMUTABLE,
1328 "EDID", 0);
356af0e1
RC		 1329 if (!prop)
1330 return -ENOMEM;
1331 dev->mode_config.edid_property = prop;
f453ba04 1332
356af0e1 1333 prop = drm_property_create_enum(dev, 0,
4a67d391
SH		 1334 "DPMS", drm_dpms_enum_list,
1335 ARRAY_SIZE(drm_dpms_enum_list));
356af0e1
RC		 1336 if (!prop)
1337 return -ENOMEM;
1338 dev->mode_config.dpms_property = prop;
6f134d7b 1339
356af0e1
RC		 1340 prop = drm_property_create(dev,
1341 DRM_MODE_PROP_BLOB |
1342 DRM_MODE_PROP_IMMUTABLE,
1343 "PATH", 0);
1344 if (!prop)
1345 return -ENOMEM;
1346 dev->mode_config.path_property = prop;
f453ba04 1347
356af0e1
RC		 1348 prop = drm_property_create(dev,
1349 DRM_MODE_PROP_BLOB |
1350 DRM_MODE_PROP_IMMUTABLE,
1351 "TILE", 0);
1352 if (!prop)
1353 return -ENOMEM;
1354 dev->mode_config.tile_property = prop;
9922ab5a 1355
6b4959f4 1356 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
9922ab5a
RC		 1357 "type", drm_plane_type_enum_list,
1358 ARRAY_SIZE(drm_plane_type_enum_list));
6b4959f4
RC		 1359 if (!prop)
1360 return -ENOMEM;
1361 dev->mode_config.plane_type_property = prop;
1362
1363 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1364 "SRC_X", 0, UINT_MAX);
1365 if (!prop)
1366 return -ENOMEM;
1367 dev->mode_config.prop_src_x = prop;
1368
1369 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1370 "SRC_Y", 0, UINT_MAX);
1371 if (!prop)
1372 return -ENOMEM;
1373 dev->mode_config.prop_src_y = prop;
1374
1375 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1376 "SRC_W", 0, UINT_MAX);
1377 if (!prop)
1378 return -ENOMEM;
1379 dev->mode_config.prop_src_w = prop;
1380
1381 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1382 "SRC_H", 0, UINT_MAX);
1383 if (!prop)
1384 return -ENOMEM;
1385 dev->mode_config.prop_src_h = prop;
1386
1387 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1388 "CRTC_X", INT_MIN, INT_MAX);
1389 if (!prop)
1390 return -ENOMEM;
1391 dev->mode_config.prop_crtc_x = prop;
1392
1393 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1394 "CRTC_Y", INT_MIN, INT_MAX);
1395 if (!prop)
1396 return -ENOMEM;
1397 dev->mode_config.prop_crtc_y = prop;
1398
1399 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1400 "CRTC_W", 0, INT_MAX);
1401 if (!prop)
1402 return -ENOMEM;
1403 dev->mode_config.prop_crtc_w = prop;
1404
1405 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1406 "CRTC_H", 0, INT_MAX);
1407 if (!prop)
1408 return -ENOMEM;
1409 dev->mode_config.prop_crtc_h = prop;
1410
1411 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1412 "FB_ID", DRM_MODE_OBJECT_FB);
1413 if (!prop)
1414 return -ENOMEM;
1415 dev->mode_config.prop_fb_id = prop;
1416
1417 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1418 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1419 if (!prop)
1420 return -ENOMEM;
1421 dev->mode_config.prop_crtc_id = prop;
9922ab5a 1422
eab3bbef
DV		 1423 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1424 "ACTIVE");
1425 if (!prop)
1426 return -ENOMEM;
1427 dev->mode_config.prop_active = prop;
1428
9922ab5a
RC		 1429 return 0;
1430}
1431
f453ba04
DA		 1432/**
1433 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1434 * @dev: DRM device
1435 *
1436 * Called by a driver the first time a DVI-I connector is made.
1437 */
1438int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1439{
1440 struct drm_property *dvi_i_selector;
1441 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1442
1443 if (dev->mode_config.dvi_i_select_subconnector_property)
1444 return 0;
1445
1446 dvi_i_selector =
4a67d391 1447 drm_property_create_enum(dev, 0,
f453ba04 1448 "select subconnector",
4a67d391 1449 drm_dvi_i_select_enum_list,
f453ba04 1450 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1451 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1452
4a67d391 1453 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1454 "subconnector",
4a67d391 1455 drm_dvi_i_subconnector_enum_list,
f453ba04 1456 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1457 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1458
1459 return 0;
1460}
1461EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1462
1463/**
1464 * drm_create_tv_properties - create TV specific connector properties
1465 * @dev: DRM device
1466 * @num_modes: number of different TV formats (modes) supported
1467 * @modes: array of pointers to strings containing name of each format
1468 *
1469 * Called by a driver's TV initialization routine, this function creates
1470 * the TV specific connector properties for a given device. Caller is
1471 * responsible for allocating a list of format names and passing them to
1472 * this routine.
1473 */
2f763312
TR		 1474int drm_mode_create_tv_properties(struct drm_device *dev,
1475 unsigned int num_modes,
f453ba04
DA		 1476 char *modes[])
1477{
1478 struct drm_property *tv_selector;
1479 struct drm_property *tv_subconnector;
2f763312 1480 unsigned int i;
f453ba04
DA		 1481
1482 if (dev->mode_config.tv_select_subconnector_property)
1483 return 0;
1484
1485 /*
1486 * Basic connector properties
1487 */
4a67d391 1488 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1489 "select subconnector",
4a67d391 1490 drm_tv_select_enum_list,
f453ba04 1491 ARRAY_SIZE(drm_tv_select_enum_list));
f453ba04
DA		 1492 dev->mode_config.tv_select_subconnector_property = tv_selector;
1493
1494 tv_subconnector =
4a67d391
SH		 1495 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1496 "subconnector",
1497 drm_tv_subconnector_enum_list,
f453ba04 1498 ARRAY_SIZE(drm_tv_subconnector_enum_list));
f453ba04
DA		 1499 dev->mode_config.tv_subconnector_property = tv_subconnector;
1500
1501 /*
1502 * Other, TV specific properties: margins & TV modes.
1503 */
1504 dev->mode_config.tv_left_margin_property =
d9bc3c02 1505 drm_property_create_range(dev, 0, "left margin", 0, 100);
f453ba04
DA		 1506
1507 dev->mode_config.tv_right_margin_property =
d9bc3c02 1508 drm_property_create_range(dev, 0, "right margin", 0, 100);
f453ba04
DA		 1509
1510 dev->mode_config.tv_top_margin_property =
d9bc3c02 1511 drm_property_create_range(dev, 0, "top margin", 0, 100);
f453ba04
DA		 1512
1513 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1514 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
f453ba04
DA		 1515
1516 dev->mode_config.tv_mode_property =
1517 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1518 "mode", num_modes);
1519 for (i = 0; i < num_modes; i++)
1520 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1521 i, modes[i]);
1522
b6b7902e 1523 dev->mode_config.tv_brightness_property =
d9bc3c02 1524 drm_property_create_range(dev, 0, "brightness", 0, 100);
b6b7902e
FJ		 1525
1526 dev->mode_config.tv_contrast_property =
d9bc3c02 1527 drm_property_create_range(dev, 0, "contrast", 0, 100);
b6b7902e
FJ		 1528
1529 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1530 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
b6b7902e 1531
a75f0236 1532 dev->mode_config.tv_overscan_property =
d9bc3c02 1533 drm_property_create_range(dev, 0, "overscan", 0, 100);
a75f0236
FJ		 1534
1535 dev->mode_config.tv_saturation_property =
d9bc3c02 1536 drm_property_create_range(dev, 0, "saturation", 0, 100);
a75f0236
FJ		 1537
1538 dev->mode_config.tv_hue_property =
d9bc3c02 1539 drm_property_create_range(dev, 0, "hue", 0, 100);
a75f0236 1540
f453ba04
DA		 1541 return 0;
1542}
1543EXPORT_SYMBOL(drm_mode_create_tv_properties);
1544
1545/**
1546 * drm_mode_create_scaling_mode_property - create scaling mode property
1547 * @dev: DRM device
1548 *
1549 * Called by a driver the first time it's needed, must be attached to desired
1550 * connectors.
1551 */
1552int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1553{
1554 struct drm_property *scaling_mode;
f453ba04
DA		 1555
1556 if (dev->mode_config.scaling_mode_property)
1557 return 0;
1558
1559 scaling_mode =
4a67d391
SH		 1560 drm_property_create_enum(dev, 0, "scaling mode",
1561 drm_scaling_mode_enum_list,
f453ba04 1562 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1563
1564 dev->mode_config.scaling_mode_property = scaling_mode;
1565
1566 return 0;
1567}
1568EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1569
ff587e45
VK		 1570/**
1571 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1572 * @dev: DRM device
1573 *
1574 * Called by a driver the first time it's needed, must be attached to desired
1575 * connectors.
1576 *
1577 * Returns:
1a498633 1578 * Zero on success, negative errno on failure.
ff587e45
VK		 1579 */
1580int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1581{
1582 if (dev->mode_config.aspect_ratio_property)
1583 return 0;
1584
1585 dev->mode_config.aspect_ratio_property =
1586 drm_property_create_enum(dev, 0, "aspect ratio",
1587 drm_aspect_ratio_enum_list,
1588 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1589
1590 if (dev->mode_config.aspect_ratio_property == NULL)
1591 return -ENOMEM;
1592
1593 return 0;
1594}
1595EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1596
884840aa
JB		 1597/**
1598 * drm_mode_create_dirty_property - create dirty property
1599 * @dev: DRM device
1600 *
1601 * Called by a driver the first time it's needed, must be attached to desired
1602 * connectors.
1603 */
1604int drm_mode_create_dirty_info_property(struct drm_device *dev)
1605{
1606 struct drm_property *dirty_info;
884840aa
JB		 1607
1608 if (dev->mode_config.dirty_info_property)
1609 return 0;
1610
1611 dirty_info =
4a67d391 1612 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1613 "dirty",
4a67d391 1614 drm_dirty_info_enum_list,
884840aa 1615 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1616 dev->mode_config.dirty_info_property = dirty_info;
1617
1618 return 0;
1619}
1620EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1621
5bb2bbf5
DA		 1622/**
1623 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1624 * @dev: DRM device
1625 *
1626 * Create the the suggested x/y offset property for connectors.
1627 */
1628int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1629{
1630 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1631 return 0;
1632
1633 dev->mode_config.suggested_x_property =
1634 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1635
1636 dev->mode_config.suggested_y_property =
1637 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1638
1639 if (dev->mode_config.suggested_x_property == NULL ||
1640 dev->mode_config.suggested_y_property == NULL)
1641 return -ENOMEM;
1642 return 0;
1643}
1644EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1645
ea9cbb06 1646static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
f453ba04
DA		 1647{
1648 uint32_t total_objects = 0;
1649
1650 total_objects += dev->mode_config.num_crtc;
1651 total_objects += dev->mode_config.num_connector;
1652 total_objects += dev->mode_config.num_encoder;
1653
bd3f0ff9 1654 group->id_list = kcalloc(total_objects, sizeof(uint32_t), GFP_KERNEL);
f453ba04
DA		 1655 if (!group->id_list)
1656 return -ENOMEM;
1657
1658 group->num_crtcs = 0;
1659 group->num_connectors = 0;
1660 group->num_encoders = 0;
1661 return 0;
1662}
1663
ad222799
DA		 1664void drm_mode_group_destroy(struct drm_mode_group *group)
1665{
1666 kfree(group->id_list);
1667 group->id_list = NULL;
1668}
1669
c8e32cc1
DV		 1670/*
1671 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1672 * the drm core's responsibility to set up mode control groups.
1673 */
f453ba04
DA		 1674int drm_mode_group_init_legacy_group(struct drm_device *dev,
1675 struct drm_mode_group *group)
1676{
1677 struct drm_crtc *crtc;
1678 struct drm_encoder *encoder;
1679 struct drm_connector *connector;
1680 int ret;
1681
0cc0b223
TR		 1682 ret = drm_mode_group_init(dev, group);
1683 if (ret)
f453ba04
DA		 1684 return ret;
1685
1686 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1687 group->id_list[group->num_crtcs++] = crtc->base.id;
1688
1689 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1690 group->id_list[group->num_crtcs + group->num_encoders++] =
1691 encoder->base.id;
1692
1693 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1694 group->id_list[group->num_crtcs + group->num_encoders +
1695 group->num_connectors++] = connector->base.id;
1696
1697 return 0;
1698}
9c1dfc55 1699EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
f453ba04 1700
2390cd11
DA		 1701void drm_reinit_primary_mode_group(struct drm_device *dev)
1702{
1703 drm_modeset_lock_all(dev);
1704 drm_mode_group_destroy(&dev->primary->mode_group);
1705 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1706 drm_modeset_unlock_all(dev);
1707}
1708EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1709
f453ba04
DA		 1710/**
1711 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1712 * @out: drm_mode_modeinfo struct to return to the user
1713 * @in: drm_display_mode to use
1714 *
f453ba04
DA		 1715 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1716 * the user.
1717 */
93bbf6db
VS		 1718static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1719 const struct drm_display_mode *in)
f453ba04 1720{
e36fae38
VS		 1721 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1722 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1723 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1724 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1725 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1726 "timing values too large for mode info\n");
1727
f453ba04
DA		 1728 out->clock = in->clock;
1729 out->hdisplay = in->hdisplay;
1730 out->hsync_start = in->hsync_start;
1731 out->hsync_end = in->hsync_end;
1732 out->htotal = in->htotal;
1733 out->hskew = in->hskew;
1734 out->vdisplay = in->vdisplay;
1735 out->vsync_start = in->vsync_start;
1736 out->vsync_end = in->vsync_end;
1737 out->vtotal = in->vtotal;
1738 out->vscan = in->vscan;
1739 out->vrefresh = in->vrefresh;
1740 out->flags = in->flags;
1741 out->type = in->type;
1742 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1743 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1744}
1745
1746/**
74afee7d 1747 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
f453ba04
DA		 1748 * @out: drm_display_mode to return to the user
1749 * @in: drm_mode_modeinfo to use
1750 *
f453ba04
DA		 1751 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1752 * the caller.
90367bf6 1753 *
c8e32cc1 1754 * Returns:
1a498633 1755 * Zero on success, negative errno on failure.
f453ba04 1756 */
93bbf6db
VS		 1757static int drm_crtc_convert_umode(struct drm_display_mode *out,
1758 const struct drm_mode_modeinfo *in)
f453ba04 1759{
90367bf6
VS		 1760 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1761 return -ERANGE;
1762
5848ad40
DL		 1763 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1764 return -EINVAL;
1765
f453ba04
DA		 1766 out->clock = in->clock;
1767 out->hdisplay = in->hdisplay;
1768 out->hsync_start = in->hsync_start;
1769 out->hsync_end = in->hsync_end;
1770 out->htotal = in->htotal;
1771 out->hskew = in->hskew;
1772 out->vdisplay = in->vdisplay;
1773 out->vsync_start = in->vsync_start;
1774 out->vsync_end = in->vsync_end;
1775 out->vtotal = in->vtotal;
1776 out->vscan = in->vscan;
1777 out->vrefresh = in->vrefresh;
1778 out->flags = in->flags;
1779 out->type = in->type;
1780 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1781 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
90367bf6
VS		 1782
1783 return 0;
f453ba04
DA		 1784}
1785
1786/**
1787 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1788 * @dev: drm device for the ioctl
1789 * @data: data pointer for the ioctl
1790 * @file_priv: drm file for the ioctl call
f453ba04 1791 *
f453ba04
DA		 1792 * Construct a set of configuration description structures and return
1793 * them to the user, including CRTC, connector and framebuffer configuration.
1794 *
1795 * Called by the user via ioctl.
1796 *
c8e32cc1 1797 * Returns:
1a498633 1798 * Zero on success, negative errno on failure.
f453ba04
DA		 1799 */
1800int drm_mode_getresources(struct drm_device *dev, void *data,
1801 struct drm_file *file_priv)
1802{
1803 struct drm_mode_card_res *card_res = data;
1804 struct list_head *lh;
1805 struct drm_framebuffer *fb;
1806 struct drm_connector *connector;
1807 struct drm_crtc *crtc;
1808 struct drm_encoder *encoder;
1809 int ret = 0;
1810 int connector_count = 0;
1811 int crtc_count = 0;
1812 int fb_count = 0;
1813 int encoder_count = 0;
1814 int copied = 0, i;
1815 uint32_t __user *fb_id;
1816 uint32_t __user *crtc_id;
1817 uint32_t __user *connector_id;
1818 uint32_t __user *encoder_id;
1819 struct drm_mode_group *mode_group;
1820
fb3b06c8
DA		 1821 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1822 return -EINVAL;
1823
f453ba04 1824
4b096ac1 1825 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1826 /*
1827 * For the non-control nodes we need to limit the list of resources
1828 * by IDs in the group list for this node
1829 */
1830 list_for_each(lh, &file_priv->fbs)
1831 fb_count++;
1832
4b096ac1
DV		 1833 /* handle this in 4 parts */
1834 /* FBs */
1835 if (card_res->count_fbs >= fb_count) {
1836 copied = 0;
1837 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1838 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1839 if (put_user(fb->base.id, fb_id + copied)) {
1840 mutex_unlock(&file_priv->fbs_lock);
1841 return -EFAULT;
1842 }
1843 copied++;
1844 }
1845 }
1846 card_res->count_fbs = fb_count;
1847 mutex_unlock(&file_priv->fbs_lock);
1848
fcf93f69
DV		 1849 /* mode_config.mutex protects the connector list against e.g. DP MST
1850 * connector hot-adding. CRTC/Plane lists are invariant. */
1851 mutex_lock(&dev->mode_config.mutex);
43683057 1852 if (!drm_is_primary_client(file_priv)) {
f453ba04 1853
09f308f7 1854 mode_group = NULL;
f453ba04
DA		 1855 list_for_each(lh, &dev->mode_config.crtc_list)
1856 crtc_count++;
1857
1858 list_for_each(lh, &dev->mode_config.connector_list)
1859 connector_count++;
1860
1861 list_for_each(lh, &dev->mode_config.encoder_list)
1862 encoder_count++;
1863 } else {
1864
09f308f7 1865 mode_group = &file_priv->master->minor->mode_group;
f453ba04
DA		 1866 crtc_count = mode_group->num_crtcs;
1867 connector_count = mode_group->num_connectors;
1868 encoder_count = mode_group->num_encoders;
1869 }
1870
1871 card_res->max_height = dev->mode_config.max_height;
1872 card_res->min_height = dev->mode_config.min_height;
1873 card_res->max_width = dev->mode_config.max_width;
1874 card_res->min_width = dev->mode_config.min_width;
1875
f453ba04
DA		 1876 /* CRTCs */
1877 if (card_res->count_crtcs >= crtc_count) {
1878 copied = 0;
1879 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
09f308f7 1880 if (!mode_group) {
f453ba04
DA		 1881 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1882 head) {
9440106b 1883 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1884 if (put_user(crtc->base.id, crtc_id + copied)) {
1885 ret = -EFAULT;
1886 goto out;
1887 }
1888 copied++;
1889 }
1890 } else {
1891 for (i = 0; i < mode_group->num_crtcs; i++) {
1892 if (put_user(mode_group->id_list[i],
1893 crtc_id + copied)) {
1894 ret = -EFAULT;
1895 goto out;
1896 }
1897 copied++;
1898 }
1899 }
1900 }
1901 card_res->count_crtcs = crtc_count;
1902
1903 /* Encoders */
1904 if (card_res->count_encoders >= encoder_count) {
1905 copied = 0;
1906 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
09f308f7 1907 if (!mode_group) {
f453ba04
DA		 1908 list_for_each_entry(encoder,
1909 &dev->mode_config.encoder_list,
1910 head) {
9440106b 1911 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
83a8cfd3 1912 encoder->name);
f453ba04
DA		 1913 if (put_user(encoder->base.id, encoder_id +
1914 copied)) {
1915 ret = -EFAULT;
1916 goto out;
1917 }
1918 copied++;
1919 }
1920 } else {
1921 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1922 if (put_user(mode_group->id_list[i],
1923 encoder_id + copied)) {
1924 ret = -EFAULT;
1925 goto out;
1926 }
1927 copied++;
1928 }
1929
1930 }
1931 }
1932 card_res->count_encoders = encoder_count;
1933
1934 /* Connectors */
1935 if (card_res->count_connectors >= connector_count) {
1936 copied = 0;
1937 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
09f308f7 1938 if (!mode_group) {
f453ba04
DA		 1939 list_for_each_entry(connector,
1940 &dev->mode_config.connector_list,
1941 head) {
9440106b
JG		 1942 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1943 connector->base.id,
25933820 1944 connector->name);
f453ba04
DA		 1945 if (put_user(connector->base.id,
1946 connector_id + copied)) {
1947 ret = -EFAULT;
1948 goto out;
1949 }
1950 copied++;
1951 }
1952 } else {
1953 int start = mode_group->num_crtcs +
1954 mode_group->num_encoders;
1955 for (i = start; i < start + mode_group->num_connectors; i++) {
1956 if (put_user(mode_group->id_list[i],
1957 connector_id + copied)) {
1958 ret = -EFAULT;
1959 goto out;
1960 }
1961 copied++;
1962 }
1963 }
1964 }
1965 card_res->count_connectors = connector_count;
1966
9440106b 1967 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1968 card_res->count_connectors, card_res->count_encoders);
1969
1970out:
fcf93f69 1971 mutex_unlock(&dev->mode_config.mutex);
f453ba04
DA		 1972 return ret;
1973}
1974
1975/**
1976 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1977 * @dev: drm device for the ioctl
1978 * @data: data pointer for the ioctl
1979 * @file_priv: drm file for the ioctl call
f453ba04 1980 *
f453ba04
DA		 1981 * Construct a CRTC configuration structure to return to the user.
1982 *
1983 * Called by the user via ioctl.
1984 *
c8e32cc1 1985 * Returns:
1a498633 1986 * Zero on success, negative errno on failure.
f453ba04
DA		 1987 */
1988int drm_mode_getcrtc(struct drm_device *dev,
1989 void *data, struct drm_file *file_priv)
1990{
1991 struct drm_mode_crtc *crtc_resp = data;
1992 struct drm_crtc *crtc;
f453ba04 1993
fb3b06c8
DA		 1994 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1995 return -EINVAL;
1996
a2b34e22 1997 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
fcf93f69
DV		 1998 if (!crtc)
1999 return -ENOENT;
f453ba04 2000
fcf93f69 2001 drm_modeset_lock_crtc(crtc, crtc->primary);
f453ba04 2002 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 2003 if (crtc->primary->fb)
2004 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 2005 else
2006 crtc_resp->fb_id = 0;
2007
31c946e8
DV		 2008 if (crtc->state) {
2009 crtc_resp->x = crtc->primary->state->src_x >> 16;
2010 crtc_resp->y = crtc->primary->state->src_y >> 16;
2011 if (crtc->state->enable) {
2012 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
2013 crtc_resp->mode_valid = 1;
f453ba04 2014
31c946e8
DV		 2015 } else {
2016 crtc_resp->mode_valid = 0;
2017 }
f453ba04 2018 } else {
31c946e8
DV		 2019 crtc_resp->x = crtc->x;
2020 crtc_resp->y = crtc->y;
2021 if (crtc->enabled) {
2022 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2023 crtc_resp->mode_valid = 1;
2024
2025 } else {
2026 crtc_resp->mode_valid = 0;
2027 }
f453ba04 2028 }
fcf93f69 2029 drm_modeset_unlock_crtc(crtc);
f453ba04 2030
baf698b0 2031 return 0;
f453ba04
DA		 2032}
2033
61d8e328
DL		 2034static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2035 const struct drm_file *file_priv)
2036{
2037 /*
2038 * If user-space hasn't configured the driver to expose the stereo 3D
2039 * modes, don't expose them.
2040 */
2041 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2042 return false;
2043
2044 return true;
2045}
2046
abd69c55
DV		 2047static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2048{
2049 /* For atomic drivers only state objects are synchronously updated and
2050 * protected by modeset locks, so check those first. */
2051 if (connector->state)
2052 return connector->state->best_encoder;
2053 return connector->encoder;
2054}
2055
95cbf110 2056/* helper for getconnector and getproperties ioctls */
88a48e29 2057static int get_properties(struct drm_mode_object *obj, bool atomic,
95cbf110
RC		 2058 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2059 uint32_t *arg_count_props)
2060{
88a48e29
RC		 2061 int props_count;
2062 int i, ret, copied;
2063
2064 props_count = obj->properties->count;
2065 if (!atomic)
2066 props_count -= obj->properties->atomic_count;
95cbf110
RC		 2067
2068 if ((*arg_count_props >= props_count) && props_count) {
88a48e29 2069 for (i = 0, copied = 0; copied < props_count; i++) {
95cbf110
RC		 2070 struct drm_property *prop = obj->properties->properties[i];
2071 uint64_t val;
2072
88a48e29
RC		 2073 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2074 continue;
2075
95cbf110
RC		 2076 ret = drm_object_property_get_value(obj, prop, &val);
2077 if (ret)
2078 return ret;
2079
2080 if (put_user(prop->base.id, prop_ptr + copied))
2081 return -EFAULT;
2082
2083 if (put_user(val, prop_values + copied))
2084 return -EFAULT;
2085
2086 copied++;
2087 }
2088 }
2089 *arg_count_props = props_count;
2090
2091 return 0;
2092}
2093
f453ba04
DA		 2094/**
2095 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 2096 * @dev: drm device for the ioctl
2097 * @data: data pointer for the ioctl
2098 * @file_priv: drm file for the ioctl call
f453ba04 2099 *
f453ba04
DA		 2100 * Construct a connector configuration structure to return to the user.
2101 *
2102 * Called by the user via ioctl.
2103 *
c8e32cc1 2104 * Returns:
1a498633 2105 * Zero on success, negative errno on failure.
f453ba04
DA		 2106 */
2107int drm_mode_getconnector(struct drm_device *dev, void *data,
2108 struct drm_file *file_priv)
2109{
2110 struct drm_mode_get_connector *out_resp = data;
f453ba04 2111 struct drm_connector *connector;
abd69c55 2112 struct drm_encoder *encoder;
f453ba04
DA		 2113 struct drm_display_mode *mode;
2114 int mode_count = 0;
f453ba04
DA		 2115 int encoders_count = 0;
2116 int ret = 0;
2117 int copied = 0;
2118 int i;
2119 struct drm_mode_modeinfo u_mode;
2120 struct drm_mode_modeinfo __user *mode_ptr;
f453ba04
DA		 2121 uint32_t __user *encoder_ptr;
2122
fb3b06c8
DA		 2123 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2124 return -EINVAL;
2125
f453ba04
DA		 2126 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2127
9440106b 2128 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 2129
7b24056b 2130 mutex_lock(&dev->mode_config.mutex);
f453ba04 2131
a2b34e22
RC		 2132 connector = drm_connector_find(dev, out_resp->connector_id);
2133 if (!connector) {
f27657f2 2134 ret = -ENOENT;
f453ba04
DA		 2135 goto out;
2136 }
f453ba04 2137
01073b08
TR		 2138 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2139 if (connector->encoder_ids[i] != 0)
f453ba04 2140 encoders_count++;
f453ba04
DA		 2141
2142 if (out_resp->count_modes == 0) {
2143 connector->funcs->fill_modes(connector,
2144 dev->mode_config.max_width,
2145 dev->mode_config.max_height);
2146 }
2147
2148 /* delayed so we get modes regardless of pre-fill_modes state */
2149 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 2150 if (drm_mode_expose_to_userspace(mode, file_priv))
2151 mode_count++;
f453ba04
DA		 2152
2153 out_resp->connector_id = connector->base.id;
2154 out_resp->connector_type = connector->connector_type;
2155 out_resp->connector_type_id = connector->connector_type_id;
2156 out_resp->mm_width = connector->display_info.width_mm;
2157 out_resp->mm_height = connector->display_info.height_mm;
2158 out_resp->subpixel = connector->display_info.subpixel_order;
2159 out_resp->connection = connector->status;
2caa80e7
DV		 2160
2161 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2162 encoder = drm_connector_get_encoder(connector);
2163 if (encoder)
2164 out_resp->encoder_id = encoder->base.id;
f453ba04
DA		 2165 else
2166 out_resp->encoder_id = 0;
2167
2168 /*
2169 * This ioctl is called twice, once to determine how much space is
2170 * needed, and the 2nd time to fill it.
2171 */
2172 if ((out_resp->count_modes >= mode_count) && mode_count) {
2173 copied = 0;
81f6c7f8 2174 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 2175 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 2176 if (!drm_mode_expose_to_userspace(mode, file_priv))
2177 continue;
2178
f453ba04
DA		 2179 drm_crtc_convert_to_umode(&u_mode, mode);
2180 if (copy_to_user(mode_ptr + copied,
2181 &u_mode, sizeof(u_mode))) {
2182 ret = -EFAULT;
2183 goto out;
2184 }
2185 copied++;
2186 }
2187 }
2188 out_resp->count_modes = mode_count;
2189
88a48e29 2190 ret = get_properties(&connector->base, file_priv->atomic,
95cbf110
RC		 2191 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2192 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2193 &out_resp->count_props);
2194 if (ret)
2195 goto out;
f453ba04
DA		 2196
2197 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2198 copied = 0;
81f6c7f8 2199 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 2200 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2201 if (connector->encoder_ids[i] != 0) {
2202 if (put_user(connector->encoder_ids[i],
2203 encoder_ptr + copied)) {
2204 ret = -EFAULT;
2205 goto out;
2206 }
2207 copied++;
2208 }
2209 }
2210 }
2211 out_resp->count_encoders = encoders_count;
2212
2213out:
ccfc0865 2214 drm_modeset_unlock(&dev->mode_config.connection_mutex);
7b24056b
DV		 2215 mutex_unlock(&dev->mode_config.mutex);
2216
f453ba04
DA		 2217 return ret;
2218}
2219
abd69c55
DV		 2220static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2221{
2222 struct drm_connector *connector;
2223 struct drm_device *dev = encoder->dev;
2224 bool uses_atomic = false;
2225
2226 /* For atomic drivers only state objects are synchronously updated and
2227 * protected by modeset locks, so check those first. */
2228 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2229 if (!connector->state)
2230 continue;
2231
2232 uses_atomic = true;
2233
2234 if (connector->state->best_encoder != encoder)
2235 continue;
2236
2237 return connector->state->crtc;
2238 }
2239
2240 /* Don't return stale data (e.g. pending async disable). */
2241 if (uses_atomic)
2242 return NULL;
2243
2244 return encoder->crtc;
2245}
2246
c8e32cc1
DV		 2247/**
2248 * drm_mode_getencoder - get encoder configuration
2249 * @dev: drm device for the ioctl
2250 * @data: data pointer for the ioctl
2251 * @file_priv: drm file for the ioctl call
2252 *
2253 * Construct a encoder configuration structure to return to the user.
2254 *
2255 * Called by the user via ioctl.
2256 *
2257 * Returns:
1a498633 2258 * Zero on success, negative errno on failure.
c8e32cc1 2259 */
f453ba04
DA		 2260int drm_mode_getencoder(struct drm_device *dev, void *data,
2261 struct drm_file *file_priv)
2262{
2263 struct drm_mode_get_encoder *enc_resp = data;
f453ba04 2264 struct drm_encoder *encoder;
abd69c55 2265 struct drm_crtc *crtc;
f453ba04 2266
fb3b06c8
DA		 2267 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2268 return -EINVAL;
2269
a2b34e22 2270 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
fcf93f69
DV		 2271 if (!encoder)
2272 return -ENOENT;
f453ba04 2273
fcf93f69 2274 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2275 crtc = drm_encoder_get_crtc(encoder);
2276 if (crtc)
2277 enc_resp->crtc_id = crtc->base.id;
f453ba04
DA		 2278 else
2279 enc_resp->crtc_id = 0;
fcf93f69
DV		 2280 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2281
f453ba04
DA		 2282 enc_resp->encoder_type = encoder->encoder_type;
2283 enc_resp->encoder_id = encoder->base.id;
2284 enc_resp->possible_crtcs = encoder->possible_crtcs;
2285 enc_resp->possible_clones = encoder->possible_clones;
2286
baf698b0 2287 return 0;
f453ba04
DA		 2288}
2289
8cf5c917 2290/**
c8e32cc1 2291 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 2292 * @dev: DRM device
2293 * @data: ioctl data
2294 * @file_priv: DRM file info
2295 *
c8e32cc1
DV		 2296 * Construct a list of plane ids to return to the user.
2297 *
2298 * Called by the user via ioctl.
2299 *
2300 * Returns:
1a498633 2301 * Zero on success, negative errno on failure.
8cf5c917
JB		 2302 */
2303int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 2304 struct drm_file *file_priv)
8cf5c917
JB		 2305{
2306 struct drm_mode_get_plane_res *plane_resp = data;
2307 struct drm_mode_config *config;
2308 struct drm_plane *plane;
2309 uint32_t __user *plane_ptr;
fcf93f69 2310 int copied = 0;
681e7ec7 2311 unsigned num_planes;
8cf5c917
JB		 2312
2313 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2314 return -EINVAL;
2315
8cf5c917
JB		 2316 config = &dev->mode_config;
2317
681e7ec7
MR		 2318 if (file_priv->universal_planes)
2319 num_planes = config->num_total_plane;
2320 else
2321 num_planes = config->num_overlay_plane;
2322
8cf5c917
JB		 2323 /*
2324 * This ioctl is called twice, once to determine how much space is
2325 * needed, and the 2nd time to fill it.
2326 */
681e7ec7
MR		 2327 if (num_planes &&
2328 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 2329 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917 2330
fcf93f69 2331 /* Plane lists are invariant, no locking needed. */
8cf5c917 2332 list_for_each_entry(plane, &config->plane_list, head) {
681e7ec7
MR		 2333 /*
2334 * Unless userspace set the 'universal planes'
2335 * capability bit, only advertise overlays.
2336 */
2337 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2338 !file_priv->universal_planes)
e27dde3e
MR		 2339 continue;
2340
fcf93f69
DV		 2341 if (put_user(plane->base.id, plane_ptr + copied))
2342 return -EFAULT;
8cf5c917
JB		 2343 copied++;
2344 }
2345 }
681e7ec7 2346 plane_resp->count_planes = num_planes;
8cf5c917 2347
fcf93f69 2348 return 0;
8cf5c917
JB		 2349}
2350
2351/**
c8e32cc1 2352 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2353 * @dev: DRM device
2354 * @data: ioctl data
2355 * @file_priv: DRM file info
2356 *
c8e32cc1
DV		 2357 * Construct a plane configuration structure to return to the user.
2358 *
2359 * Called by the user via ioctl.
2360 *
2361 * Returns:
1a498633 2362 * Zero on success, negative errno on failure.
8cf5c917
JB		 2363 */
2364int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2365 struct drm_file *file_priv)
8cf5c917
JB		 2366{
2367 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2368 struct drm_plane *plane;
2369 uint32_t __user *format_ptr;
8cf5c917
JB		 2370
2371 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2372 return -EINVAL;
2373
a2b34e22 2374 plane = drm_plane_find(dev, plane_resp->plane_id);
fcf93f69
DV		 2375 if (!plane)
2376 return -ENOENT;
8cf5c917 2377
fcf93f69 2378 drm_modeset_lock(&plane->mutex, NULL);
8cf5c917
JB		 2379 if (plane->crtc)
2380 plane_resp->crtc_id = plane->crtc->base.id;
2381 else
2382 plane_resp->crtc_id = 0;
2383
2384 if (plane->fb)
2385 plane_resp->fb_id = plane->fb->base.id;
2386 else
2387 plane_resp->fb_id = 0;
fcf93f69 2388 drm_modeset_unlock(&plane->mutex);
8cf5c917
JB		 2389
2390 plane_resp->plane_id = plane->base.id;
2391 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2392 plane_resp->gamma_size = 0;
8cf5c917
JB		 2393
2394 /*
2395 * This ioctl is called twice, once to determine how much space is
2396 * needed, and the 2nd time to fill it.
2397 */
2398 if (plane->format_count &&
2399 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2400 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2401 if (copy_to_user(format_ptr,
2402 plane->format_types,
2403 sizeof(uint32_t) * plane->format_count)) {
fcf93f69 2404 return -EFAULT;
8cf5c917
JB		 2405 }
2406 }
2407 plane_resp->count_format_types = plane->format_count;
2408
baf698b0 2409 return 0;
8cf5c917
JB		 2410}
2411
ead8610d
LP		 2412/**
2413 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2414 * @plane: plane to check for format support
2415 * @format: the pixel format
2416 *
2417 * Returns:
2418 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2419 * otherwise.
2420 */
2421int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2422{
2423 unsigned int i;
2424
2425 for (i = 0; i < plane->format_count; i++) {
2426 if (format == plane->format_types[i])
2427 return 0;
2428 }
2429
2430 return -EINVAL;
2431}
2432
b36552b3
MR		 2433/*
2434 * setplane_internal - setplane handler for internal callers
8cf5c917 2435 *
b36552b3
MR		 2436 * Note that we assume an extra reference has already been taken on fb. If the
2437 * update fails, this reference will be dropped before return; if it succeeds,
2438 * the previous framebuffer (if any) will be unreferenced instead.
c8e32cc1 2439 *
b36552b3 2440 * src_{x,y,w,h} are provided in 16.16 fixed point format
8cf5c917 2441 */
f2b50c11
DV		 2442static int __setplane_internal(struct drm_plane *plane,
2443 struct drm_crtc *crtc,
2444 struct drm_framebuffer *fb,
2445 int32_t crtc_x, int32_t crtc_y,
2446 uint32_t crtc_w, uint32_t crtc_h,
2447 /* src_{x,y,w,h} values are 16.16 fixed point */
2448 uint32_t src_x, uint32_t src_y,
2449 uint32_t src_w, uint32_t src_h)
8cf5c917 2450{
8cf5c917 2451 int ret = 0;
42ef8789 2452 unsigned int fb_width, fb_height;
8cf5c917 2453
8cf5c917 2454 /* No fb means shut it down */
b36552b3 2455 if (!fb) {
3d30a59b 2456 plane->old_fb = plane->fb;
731cce48
DV		 2457 ret = plane->funcs->disable_plane(plane);
2458 if (!ret) {
2459 plane->crtc = NULL;
2460 plane->fb = NULL;
2461 } else {
3d30a59b 2462 plane->old_fb = NULL;
731cce48 2463 }
8cf5c917
JB		 2464 goto out;
2465 }
2466
7f994f3f
MR		 2467 /* Check whether this plane is usable on this CRTC */
2468 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2469 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2470 ret = -EINVAL;
2471 goto out;
2472 }
2473
62443be6 2474 /* Check whether this plane supports the fb pixel format. */
ead8610d
LP		 2475 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2476 if (ret) {
6ba6d03e
VS		 2477 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2478 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2479 goto out;
2480 }
2481
42ef8789
VS		 2482 fb_width = fb->width << 16;
2483 fb_height = fb->height << 16;
2484
2485 /* Make sure source coordinates are inside the fb. */
b36552b3
MR		 2486 if (src_w > fb_width ||
2487 src_x > fb_width - src_w ||
2488 src_h > fb_height ||
2489 src_y > fb_height - src_h) {
42ef8789
VS		 2490 DRM_DEBUG_KMS("Invalid source coordinates "
2491 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
b36552b3
MR		 2492 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2493 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2494 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2495 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
42ef8789
VS		 2496 ret = -ENOSPC;
2497 goto out;
2498 }
2499
3d30a59b 2500 plane->old_fb = plane->fb;
8cf5c917 2501 ret = plane->funcs->update_plane(plane, crtc, fb,
b36552b3
MR		 2502 crtc_x, crtc_y, crtc_w, crtc_h,
2503 src_x, src_y, src_w, src_h);
8cf5c917
JB		 2504 if (!ret) {
2505 plane->crtc = crtc;
2506 plane->fb = fb;
35f8badc 2507 fb = NULL;
0fe27f06 2508 } else {
3d30a59b 2509 plane->old_fb = NULL;
8cf5c917
JB		 2510 }
2511
2512out:
6c2a7532
DV		 2513 if (fb)
2514 drm_framebuffer_unreference(fb);
3d30a59b
DV		 2515 if (plane->old_fb)
2516 drm_framebuffer_unreference(plane->old_fb);
2517 plane->old_fb = NULL;
8cf5c917
JB		 2518
2519 return ret;
f2b50c11 2520}
b36552b3 2521
f2b50c11
DV		 2522static int setplane_internal(struct drm_plane *plane,
2523 struct drm_crtc *crtc,
2524 struct drm_framebuffer *fb,
2525 int32_t crtc_x, int32_t crtc_y,
2526 uint32_t crtc_w, uint32_t crtc_h,
2527 /* src_{x,y,w,h} values are 16.16 fixed point */
2528 uint32_t src_x, uint32_t src_y,
2529 uint32_t src_w, uint32_t src_h)
2530{
2531 int ret;
2532
2533 drm_modeset_lock_all(plane->dev);
2534 ret = __setplane_internal(plane, crtc, fb,
2535 crtc_x, crtc_y, crtc_w, crtc_h,
2536 src_x, src_y, src_w, src_h);
2537 drm_modeset_unlock_all(plane->dev);
2538
2539 return ret;
b36552b3
MR		 2540}
2541
2542/**
2543 * drm_mode_setplane - configure a plane's configuration
2544 * @dev: DRM device
2545 * @data: ioctl data*
2546 * @file_priv: DRM file info
2547 *
2548 * Set plane configuration, including placement, fb, scaling, and other factors.
2549 * Or pass a NULL fb to disable (planes may be disabled without providing a
2550 * valid crtc).
2551 *
2552 * Returns:
1a498633 2553 * Zero on success, negative errno on failure.
b36552b3
MR		 2554 */
2555int drm_mode_setplane(struct drm_device *dev, void *data,
2556 struct drm_file *file_priv)
2557{
2558 struct drm_mode_set_plane *plane_req = data;
b36552b3
MR		 2559 struct drm_plane *plane;
2560 struct drm_crtc *crtc = NULL;
2561 struct drm_framebuffer *fb = NULL;
2562
2563 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2564 return -EINVAL;
2565
2566 /* Give drivers some help against integer overflows */
2567 if (plane_req->crtc_w > INT_MAX ||
2568 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2569 plane_req->crtc_h > INT_MAX ||
2570 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2571 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2572 plane_req->crtc_w, plane_req->crtc_h,
2573 plane_req->crtc_x, plane_req->crtc_y);
2574 return -ERANGE;
2575 }
2576
2577 /*
2578 * First, find the plane, crtc, and fb objects. If not available,
2579 * we don't bother to call the driver.
2580 */
933f622f
RC		 2581 plane = drm_plane_find(dev, plane_req->plane_id);
2582 if (!plane) {
b36552b3
MR		 2583 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2584 plane_req->plane_id);
2585 return -ENOENT;
2586 }
b36552b3
MR		 2587
2588 if (plane_req->fb_id) {
2589 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2590 if (!fb) {
2591 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2592 plane_req->fb_id);
2593 return -ENOENT;
2594 }
2595
933f622f
RC		 2596 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2597 if (!crtc) {
b36552b3
MR		 2598 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2599 plane_req->crtc_id);
2600 return -ENOENT;
2601 }
b36552b3
MR		 2602 }
2603
161d0dc1
MR		 2604 /*
2605 * setplane_internal will take care of deref'ing either the old or new
2606 * framebuffer depending on success.
2607 */
17cfd91f 2608 return setplane_internal(plane, crtc, fb,
b36552b3
MR		 2609 plane_req->crtc_x, plane_req->crtc_y,
2610 plane_req->crtc_w, plane_req->crtc_h,
2611 plane_req->src_x, plane_req->src_y,
2612 plane_req->src_w, plane_req->src_h);
8cf5c917
JB		 2613}
2614
2d13b679
DV		 2615/**
2616 * drm_mode_set_config_internal - helper to call ->set_config
2617 * @set: modeset config to set
2618 *
2619 * This is a little helper to wrap internal calls to the ->set_config driver
2620 * interface. The only thing it adds is correct refcounting dance.
4dfd909f 2621 *
c8e32cc1 2622 * Returns:
1a498633 2623 * Zero on success, negative errno on failure.
2d13b679
DV		 2624 */
2625int drm_mode_set_config_internal(struct drm_mode_set *set)
2626{
2627 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2628 struct drm_framebuffer *fb;
2629 struct drm_crtc *tmp;
b0d12325
DV		 2630 int ret;
2631
5cef29aa
DV		 2632 /*
2633 * NOTE: ->set_config can also disable other crtcs (if we steal all
2634 * connectors from it), hence we need to refcount the fbs across all
2635 * crtcs. Atomic modeset will have saner semantics ...
2636 */
2637 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
3d30a59b 2638 tmp->primary->old_fb = tmp->primary->fb;
5cef29aa 2639
b0d12325 2640 fb = set->fb;
2d13b679 2641
b0d12325
DV		 2642 ret = crtc->funcs->set_config(set);
2643 if (ret == 0) {
e13161af 2644 crtc->primary->crtc = crtc;
0fe27f06 2645 crtc->primary->fb = fb;
5cef29aa 2646 }
cc85e121 2647
5cef29aa 2648 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
f4510a27
MR		 2649 if (tmp->primary->fb)
2650 drm_framebuffer_reference(tmp->primary->fb);
3d30a59b
DV		 2651 if (tmp->primary->old_fb)
2652 drm_framebuffer_unreference(tmp->primary->old_fb);
2653 tmp->primary->old_fb = NULL;
b0d12325
DV		 2654 }
2655
2656 return ret;
2d13b679
DV		 2657}
2658EXPORT_SYMBOL(drm_mode_set_config_internal);
2659
ecb7e16b
GP		 2660/**
2661 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2662 * @mode: mode to query
2663 * @hdisplay: hdisplay value to fill in
2664 * @vdisplay: vdisplay value to fill in
2665 *
2666 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2667 * the appropriate layout.
2668 */
2669void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2670 int *hdisplay, int *vdisplay)
2671{
2672 struct drm_display_mode adjusted;
2673
2674 drm_mode_copy(&adjusted, mode);
2675 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2676 *hdisplay = adjusted.crtc_hdisplay;
2677 *vdisplay = adjusted.crtc_vdisplay;
2678}
2679EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2680
af93629d
MR		 2681/**
2682 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2683 * CRTC viewport
2684 * @crtc: CRTC that framebuffer will be displayed on
2685 * @x: x panning
2686 * @y: y panning
2687 * @mode: mode that framebuffer will be displayed under
2688 * @fb: framebuffer to check size of
c11e9283 2689 */
af93629d
MR		 2690int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2691 int x, int y,
2692 const struct drm_display_mode *mode,
2693 const struct drm_framebuffer *fb)
c11e9283
DL		 2694
2695{
2696 int hdisplay, vdisplay;
2697
ecb7e16b 2698 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
a0c1bbb0 2699
c11e9283
DL		 2700 if (crtc->invert_dimensions)
2701 swap(hdisplay, vdisplay);
2702
2703 if (hdisplay > fb->width ||
2704 vdisplay > fb->height ||
2705 x > fb->width - hdisplay ||
2706 y > fb->height - vdisplay) {
2707 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2708 fb->width, fb->height, hdisplay, vdisplay, x, y,
2709 crtc->invert_dimensions ? " (inverted)" : "");
2710 return -ENOSPC;
2711 }
2712
2713 return 0;
2714}
af93629d 2715EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2716
f453ba04
DA		 2717/**
2718 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2719 * @dev: drm device for the ioctl
2720 * @data: data pointer for the ioctl
2721 * @file_priv: drm file for the ioctl call
f453ba04 2722 *
f453ba04
DA		 2723 * Build a new CRTC configuration based on user request.
2724 *
2725 * Called by the user via ioctl.
2726 *
c8e32cc1 2727 * Returns:
1a498633 2728 * Zero on success, negative errno on failure.
f453ba04
DA		 2729 */
2730int drm_mode_setcrtc(struct drm_device *dev, void *data,
2731 struct drm_file *file_priv)
2732{
2733 struct drm_mode_config *config = &dev->mode_config;
2734 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2735 struct drm_crtc *crtc;
f453ba04
DA		 2736 struct drm_connector **connector_set = NULL, *connector;
2737 struct drm_framebuffer *fb = NULL;
2738 struct drm_display_mode *mode = NULL;
2739 struct drm_mode_set set;
2740 uint32_t __user *set_connectors_ptr;
4a1b0714 2741 int ret;
f453ba04
DA		 2742 int i;
2743
fb3b06c8
DA		 2744 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2745 return -EINVAL;
2746
1d97e915
VS		 2747 /* For some reason crtc x/y offsets are signed internally. */
2748 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2749 return -ERANGE;
2750
84849903 2751 drm_modeset_lock_all(dev);
a2b34e22
RC		 2752 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2753 if (!crtc) {
58367ed6 2754 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2755 ret = -ENOENT;
f453ba04
DA		 2756 goto out;
2757 }
9440106b 2758 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 2759
2760 if (crtc_req->mode_valid) {
2761 /* If we have a mode we need a framebuffer. */
2762 /* If we pass -1, set the mode with the currently bound fb */
2763 if (crtc_req->fb_id == -1) {
f4510a27 2764 if (!crtc->primary->fb) {
6653cc8d
VS		 2765 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2766 ret = -EINVAL;
2767 goto out;
f453ba04 2768 }
f4510a27 2769 fb = crtc->primary->fb;
b0d12325
DV		 2770 /* Make refcounting symmetric with the lookup path. */
2771 drm_framebuffer_reference(fb);
f453ba04 2772 } else {
786b99ed
DV		 2773 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2774 if (!fb) {
58367ed6
ZY		 2775 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2776 crtc_req->fb_id);
37c4e705 2777 ret = -ENOENT;
f453ba04
DA		 2778 goto out;
2779 }
f453ba04
DA		 2780 }
2781
2782 mode = drm_mode_create(dev);
ee34ab5b
VS		 2783 if (!mode) {
2784 ret = -ENOMEM;
2785 goto out;
2786 }
2787
90367bf6
VS		 2788 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2789 if (ret) {
2790 DRM_DEBUG_KMS("Invalid mode\n");
2791 goto out;
2792 }
2793
23e1ce89
VS		 2794 mode->status = drm_mode_validate_basic(mode);
2795 if (mode->status != MODE_OK) {
2796 ret = -EINVAL;
2797 goto out;
2798 }
2799
f453ba04 2800 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2801
7eb5f302
LP		 2802 /*
2803 * Check whether the primary plane supports the fb pixel format.
2804 * Drivers not implementing the universal planes API use a
2805 * default formats list provided by the DRM core which doesn't
2806 * match real hardware capabilities. Skip the check in that
2807 * case.
2808 */
2809 if (!crtc->primary->format_default) {
2810 ret = drm_plane_check_pixel_format(crtc->primary,
2811 fb->pixel_format);
2812 if (ret) {
2813 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2814 drm_get_format_name(fb->pixel_format));
2815 goto out;
2816 }
2817 }
2818
c11e9283
DL		 2819 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2820 mode, fb);
2821 if (ret)
5f61bb42 2822 goto out;
c11e9283 2823
f453ba04
DA		 2824 }
2825
2826 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2827 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2828 ret = -EINVAL;
2829 goto out;
2830 }
2831
7781de74 2832 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2833 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2834 crtc_req->count_connectors);
2835 ret = -EINVAL;
2836 goto out;
2837 }
2838
2839 if (crtc_req->count_connectors > 0) {
2840 u32 out_id;
2841
2842 /* Avoid unbounded kernel memory allocation */
2843 if (crtc_req->count_connectors > config->num_connector) {
2844 ret = -EINVAL;
2845 goto out;
2846 }
2847
2f6c5389
TR		 2848 connector_set = kmalloc_array(crtc_req->count_connectors,
2849 sizeof(struct drm_connector *),
2850 GFP_KERNEL);
f453ba04
DA		 2851 if (!connector_set) {
2852 ret = -ENOMEM;
2853 goto out;
2854 }
2855
2856 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2857 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2858 if (get_user(out_id, &set_connectors_ptr[i])) {
2859 ret = -EFAULT;
2860 goto out;
2861 }
2862
a2b34e22
RC		 2863 connector = drm_connector_find(dev, out_id);
2864 if (!connector) {
58367ed6
ZY		 2865 DRM_DEBUG_KMS("Connector id %d unknown\n",
2866 out_id);
f27657f2 2867 ret = -ENOENT;
f453ba04
DA		 2868 goto out;
2869 }
9440106b
JG		 2870 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2871 connector->base.id,
25933820 2872 connector->name);
f453ba04
DA		 2873
2874 connector_set[i] = connector;
2875 }
2876 }
2877
2878 set.crtc = crtc;
2879 set.x = crtc_req->x;
2880 set.y = crtc_req->y;
2881 set.mode = mode;
2882 set.connectors = connector_set;
2883 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2884 set.fb = fb;
2d13b679 2885 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2886
2887out:
b0d12325
DV		 2888 if (fb)
2889 drm_framebuffer_unreference(fb);
2890
f453ba04 2891 kfree(connector_set);
ee34ab5b 2892 drm_mode_destroy(dev, mode);
84849903 2893 drm_modeset_unlock_all(dev);
f453ba04
DA		 2894 return ret;
2895}
2896
161d0dc1
MR		 2897/**
2898 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2899 * universal plane handler call
2900 * @crtc: crtc to update cursor for
2901 * @req: data pointer for the ioctl
2902 * @file_priv: drm file for the ioctl call
2903 *
2904 * Legacy cursor ioctl's work directly with driver buffer handles. To
2905 * translate legacy ioctl calls into universal plane handler calls, we need to
2906 * wrap the native buffer handle in a drm_framebuffer.
2907 *
2908 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2909 * buffer with a pitch of 4*width; the universal plane interface should be used
2910 * directly in cases where the hardware can support other buffer settings and
2911 * userspace wants to make use of these capabilities.
2912 *
2913 * Returns:
1a498633 2914 * Zero on success, negative errno on failure.
161d0dc1
MR		 2915 */
2916static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2917 struct drm_mode_cursor2 *req,
2918 struct drm_file *file_priv)
2919{
2920 struct drm_device *dev = crtc->dev;
2921 struct drm_framebuffer *fb = NULL;
2922 struct drm_mode_fb_cmd2 fbreq = {
2923 .width = req->width,
2924 .height = req->height,
2925 .pixel_format = DRM_FORMAT_ARGB8888,
2926 .pitches = { req->width * 4 },
2927 .handles = { req->handle },
2928 };
2929 int32_t crtc_x, crtc_y;
2930 uint32_t crtc_w = 0, crtc_h = 0;
2931 uint32_t src_w = 0, src_h = 0;
2932 int ret = 0;
2933
2934 BUG_ON(!crtc->cursor);
f2b50c11 2935 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
161d0dc1
MR		 2936
2937 /*
2938 * Obtain fb we'll be using (either new or existing) and take an extra
2939 * reference to it if fb != null. setplane will take care of dropping
2940 * the reference if the plane update fails.
2941 */
2942 if (req->flags & DRM_MODE_CURSOR_BO) {
2943 if (req->handle) {
9a6f5130 2944 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
161d0dc1
MR		 2945 if (IS_ERR(fb)) {
2946 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2947 return PTR_ERR(fb);
2948 }
161d0dc1
MR		 2949 } else {
2950 fb = NULL;
2951 }
2952 } else {
161d0dc1
MR		 2953 fb = crtc->cursor->fb;
2954 if (fb)
2955 drm_framebuffer_reference(fb);
161d0dc1
MR		 2956 }
2957
2958 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2959 crtc_x = req->x;
2960 crtc_y = req->y;
2961 } else {
2962 crtc_x = crtc->cursor_x;
2963 crtc_y = crtc->cursor_y;
2964 }
2965
2966 if (fb) {
2967 crtc_w = fb->width;
2968 crtc_h = fb->height;
2969 src_w = fb->width << 16;
2970 src_h = fb->height << 16;
2971 }
2972
2973 /*
2974 * setplane_internal will take care of deref'ing either the old or new
2975 * framebuffer depending on success.
2976 */
f2b50c11 2977 ret = __setplane_internal(crtc->cursor, crtc, fb,
161d0dc1
MR		 2978 crtc_x, crtc_y, crtc_w, crtc_h,
2979 0, 0, src_w, src_h);
2980
2981 /* Update successful; save new cursor position, if necessary */
2982 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2983 crtc->cursor_x = req->x;
2984 crtc->cursor_y = req->y;
2985 }
2986
2987 return ret;
2988}
2989
4c813d4d
DA		 2990static int drm_mode_cursor_common(struct drm_device *dev,
2991 struct drm_mode_cursor2 *req,
2992 struct drm_file *file_priv)
f453ba04 2993{
f453ba04
DA		 2994 struct drm_crtc *crtc;
2995 int ret = 0;
2996
fb3b06c8
DA		 2997 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2998 return -EINVAL;
2999
7c4eaca4 3000 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 3001 return -EINVAL;
f453ba04 3002
a2b34e22
RC		 3003 crtc = drm_crtc_find(dev, req->crtc_id);
3004 if (!crtc) {
58367ed6 3005 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 3006 return -ENOENT;
f453ba04 3007 }
f453ba04 3008
161d0dc1
MR		 3009 /*
3010 * If this crtc has a universal cursor plane, call that plane's update
3011 * handler rather than using legacy cursor handlers.
3012 */
4d02e2de 3013 drm_modeset_lock_crtc(crtc, crtc->cursor);
f2b50c11
DV		 3014 if (crtc->cursor) {
3015 ret = drm_mode_cursor_universal(crtc, req, file_priv);
3016 goto out;
3017 }
3018
f453ba04 3019 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 3020 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 3021 ret = -ENXIO;
3022 goto out;
3023 }
3024 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 3025 if (crtc->funcs->cursor_set2)
3026 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
3027 req->width, req->height, req->hot_x, req->hot_y);
3028 else
3029 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
3030 req->width, req->height);
f453ba04
DA		 3031 }
3032
3033 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3034 if (crtc->funcs->cursor_move) {
3035 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3036 } else {
f453ba04
DA		 3037 ret = -EFAULT;
3038 goto out;
3039 }
3040 }
3041out:
d059f652 3042 drm_modeset_unlock_crtc(crtc);
dac35663 3043
f453ba04 3044 return ret;
4c813d4d
DA		 3045
3046}
c8e32cc1
DV		 3047
3048
3049/**
3050 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3051 * @dev: drm device for the ioctl
3052 * @data: data pointer for the ioctl
3053 * @file_priv: drm file for the ioctl call
3054 *
3055 * Set the cursor configuration based on user request.
3056 *
3057 * Called by the user via ioctl.
3058 *
3059 * Returns:
1a498633 3060 * Zero on success, negative errno on failure.
c8e32cc1 3061 */
4c813d4d 3062int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 3063 void *data, struct drm_file *file_priv)
4c813d4d
DA		 3064{
3065 struct drm_mode_cursor *req = data;
3066 struct drm_mode_cursor2 new_req;
3067
3068 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3069 new_req.hot_x = new_req.hot_y = 0;
3070
3071 return drm_mode_cursor_common(dev, &new_req, file_priv);
3072}
3073
c8e32cc1
DV		 3074/**
3075 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3076 * @dev: drm device for the ioctl
3077 * @data: data pointer for the ioctl
3078 * @file_priv: drm file for the ioctl call
3079 *
3080 * Set the cursor configuration based on user request. This implements the 2nd
3081 * version of the cursor ioctl, which allows userspace to additionally specify
3082 * the hotspot of the pointer.
3083 *
3084 * Called by the user via ioctl.
3085 *
3086 * Returns:
1a498633 3087 * Zero on success, negative errno on failure.
c8e32cc1 3088 */
4c813d4d
DA		 3089int drm_mode_cursor2_ioctl(struct drm_device *dev,
3090 void *data, struct drm_file *file_priv)
3091{
3092 struct drm_mode_cursor2 *req = data;
4dfd909f 3093
4c813d4d 3094 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 3095}
3096
c8e32cc1
DV		 3097/**
3098 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3099 * @bpp: bits per pixels
3100 * @depth: bit depth per pixel
3101 *
3102 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3103 * Useful in fbdev emulation code, since that deals in those values.
3104 */
308e5bcb
JB		 3105uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3106{
3107 uint32_t fmt;
3108
3109 switch (bpp) {
3110 case 8:
d84f031b 3111 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 3112 break;
3113 case 16:
3114 if (depth == 15)
04b3924d 3115 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 3116 else
04b3924d 3117 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 3118 break;
3119 case 24:
04b3924d 3120 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 3121 break;
3122 case 32:
3123 if (depth == 24)
04b3924d 3124 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 3125 else if (depth == 30)
04b3924d 3126 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 3127 else
04b3924d 3128 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 3129 break;
3130 default:
04b3924d
VS		 3131 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3132 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 3133 break;
3134 }
3135
3136 return fmt;
3137}
3138EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3139
f453ba04
DA		 3140/**
3141 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 3142 * @dev: drm device for the ioctl
3143 * @data: data pointer for the ioctl
3144 * @file_priv: drm file for the ioctl call
f453ba04 3145 *
c8e32cc1 3146 * Add a new FB to the specified CRTC, given a user request. This is the
209f5527 3147 * original addfb ioctl which only supported RGB formats.
f453ba04
DA		 3148 *
3149 * Called by the user via ioctl.
3150 *
c8e32cc1 3151 * Returns:
1a498633 3152 * Zero on success, negative errno on failure.
f453ba04
DA		 3153 */
3154int drm_mode_addfb(struct drm_device *dev,
3155 void *data, struct drm_file *file_priv)
3156{
308e5bcb
JB		 3157 struct drm_mode_fb_cmd *or = data;
3158 struct drm_mode_fb_cmd2 r = {};
228f2cb3 3159 int ret;
308e5bcb 3160
228f2cb3 3161 /* convert to new format and call new ioctl */
308e5bcb
JB		 3162 r.fb_id = or->fb_id;
3163 r.width = or->width;
3164 r.height = or->height;
3165 r.pitches[0] = or->pitch;
3166 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3167 r.handles[0] = or->handle;
3168
228f2cb3
CE		 3169 ret = drm_mode_addfb2(dev, &r, file_priv);
3170 if (ret)
3171 return ret;
308e5bcb 3172
228f2cb3 3173 or->fb_id = r.fb_id;
4b096ac1 3174
baf698b0 3175 return 0;
308e5bcb
JB		 3176}
3177
cff91b62 3178static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 3179{
3180 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3181
3182 switch (format) {
3183 case DRM_FORMAT_C8:
3184 case DRM_FORMAT_RGB332:
3185 case DRM_FORMAT_BGR233:
3186 case DRM_FORMAT_XRGB4444:
3187 case DRM_FORMAT_XBGR4444:
3188 case DRM_FORMAT_RGBX4444:
3189 case DRM_FORMAT_BGRX4444:
3190 case DRM_FORMAT_ARGB4444:
3191 case DRM_FORMAT_ABGR4444:
3192 case DRM_FORMAT_RGBA4444:
3193 case DRM_FORMAT_BGRA4444:
3194 case DRM_FORMAT_XRGB1555:
3195 case DRM_FORMAT_XBGR1555:
3196 case DRM_FORMAT_RGBX5551:
3197 case DRM_FORMAT_BGRX5551:
3198 case DRM_FORMAT_ARGB1555:
3199 case DRM_FORMAT_ABGR1555:
3200 case DRM_FORMAT_RGBA5551:
3201 case DRM_FORMAT_BGRA5551:
3202 case DRM_FORMAT_RGB565:
3203 case DRM_FORMAT_BGR565:
3204 case DRM_FORMAT_RGB888:
3205 case DRM_FORMAT_BGR888:
3206 case DRM_FORMAT_XRGB8888:
3207 case DRM_FORMAT_XBGR8888:
3208 case DRM_FORMAT_RGBX8888:
3209 case DRM_FORMAT_BGRX8888:
3210 case DRM_FORMAT_ARGB8888:
3211 case DRM_FORMAT_ABGR8888:
3212 case DRM_FORMAT_RGBA8888:
3213 case DRM_FORMAT_BGRA8888:
3214 case DRM_FORMAT_XRGB2101010:
3215 case DRM_FORMAT_XBGR2101010:
3216 case DRM_FORMAT_RGBX1010102:
3217 case DRM_FORMAT_BGRX1010102:
3218 case DRM_FORMAT_ARGB2101010:
3219 case DRM_FORMAT_ABGR2101010:
3220 case DRM_FORMAT_RGBA1010102:
3221 case DRM_FORMAT_BGRA1010102:
3222 case DRM_FORMAT_YUYV:
3223 case DRM_FORMAT_YVYU:
3224 case DRM_FORMAT_UYVY:
3225 case DRM_FORMAT_VYUY:
3226 case DRM_FORMAT_AYUV:
3227 case DRM_FORMAT_NV12:
3228 case DRM_FORMAT_NV21:
3229 case DRM_FORMAT_NV16:
3230 case DRM_FORMAT_NV61:
ba623f6a
LP		 3231 case DRM_FORMAT_NV24:
3232 case DRM_FORMAT_NV42:
935b5977
VS		 3233 case DRM_FORMAT_YUV410:
3234 case DRM_FORMAT_YVU410:
3235 case DRM_FORMAT_YUV411:
3236 case DRM_FORMAT_YVU411:
3237 case DRM_FORMAT_YUV420:
3238 case DRM_FORMAT_YVU420:
3239 case DRM_FORMAT_YUV422:
3240 case DRM_FORMAT_YVU422:
3241 case DRM_FORMAT_YUV444:
3242 case DRM_FORMAT_YVU444:
3243 return 0;
3244 default:
23c453a4
VS		 3245 DRM_DEBUG_KMS("invalid pixel format %s\n",
3246 drm_get_format_name(r->pixel_format));
935b5977
VS		 3247 return -EINVAL;
3248 }
3249}
3250
cff91b62 3251static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 3252{
3253 int ret, hsub, vsub, num_planes, i;
3254
3255 ret = format_check(r);
3256 if (ret) {
6ba6d03e
VS		 3257 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3258 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 3259 return ret;
3260 }
3261
3262 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3263 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3264 num_planes = drm_format_num_planes(r->pixel_format);
3265
3266 if (r->width == 0 || r->width % hsub) {
209f5527 3267 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
d1b45d5f
VS		 3268 return -EINVAL;
3269 }
3270
3271 if (r->height == 0 || r->height % vsub) {
1aa1b11c 3272 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 3273 return -EINVAL;
3274 }
3275
3276 for (i = 0; i < num_planes; i++) {
3277 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 3278 unsigned int height = r->height / (i != 0 ? vsub : 1);
3279 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 3280
3281 if (!r->handles[i]) {
1aa1b11c 3282 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 3283 return -EINVAL;
3284 }
3285
b180b5d1
VS		 3286 if ((uint64_t) width * cpp > UINT_MAX)
3287 return -ERANGE;
3288
3289 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3290 return -ERANGE;
3291
3292 if (r->pitches[i] < width * cpp) {
1aa1b11c 3293 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 3294 return -EINVAL;
3295 }
e3eb3250
RC		 3296
3297 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3298 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3299 r->modifier[i], i);
3300 return -EINVAL;
3301 }
d1b45d5f
VS		 3302 }
3303
3304 return 0;
3305}
3306
9a6f5130
CW		 3307static struct drm_framebuffer *
3308internal_framebuffer_create(struct drm_device *dev,
3309 struct drm_mode_fb_cmd2 *r,
3310 struct drm_file *file_priv)
308e5bcb 3311{
f453ba04
DA		 3312 struct drm_mode_config *config = &dev->mode_config;
3313 struct drm_framebuffer *fb;
4a1b0714 3314 int ret;
f453ba04 3315
e3eb3250 3316 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
e3cc3520 3317 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
c394c2b0 3318 return ERR_PTR(-EINVAL);
e3cc3520
VS		 3319 }
3320
f453ba04 3321 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 3322 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 3323 r->width, config->min_width, config->max_width);
c394c2b0 3324 return ERR_PTR(-EINVAL);
f453ba04
DA		 3325 }
3326 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 3327 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 3328 r->height, config->min_height, config->max_height);
c394c2b0 3329 return ERR_PTR(-EINVAL);
f453ba04
DA		 3330 }
3331
e3eb3250
RC		 3332 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3333 !dev->mode_config.allow_fb_modifiers) {
3334 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3335 return ERR_PTR(-EINVAL);
3336 }
3337
d1b45d5f
VS		 3338 ret = framebuffer_check(r);
3339 if (ret)
c394c2b0 3340 return ERR_PTR(ret);
935b5977 3341
f453ba04 3342 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 3343 if (IS_ERR(fb)) {
1aa1b11c 3344 DRM_DEBUG_KMS("could not create framebuffer\n");
c394c2b0 3345 return fb;
f453ba04
DA		 3346 }
3347
c394c2b0
MR		 3348 return fb;
3349}
4b096ac1 3350
c394c2b0
MR		 3351/**
3352 * drm_mode_addfb2 - add an FB to the graphics configuration
3353 * @dev: drm device for the ioctl
3354 * @data: data pointer for the ioctl
3355 * @file_priv: drm file for the ioctl call
3356 *
3357 * Add a new FB to the specified CRTC, given a user request with format. This is
3358 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3359 * and uses fourcc codes as pixel format specifiers.
3360 *
3361 * Called by the user via ioctl.
3362 *
3363 * Returns:
1a498633 3364 * Zero on success, negative errno on failure.
c394c2b0
MR		 3365 */
3366int drm_mode_addfb2(struct drm_device *dev,
3367 void *data, struct drm_file *file_priv)
3368{
9a6f5130 3369 struct drm_mode_fb_cmd2 *r = data;
c394c2b0
MR		 3370 struct drm_framebuffer *fb;
3371
3372 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3373 return -EINVAL;
3374
9a6f5130 3375 fb = internal_framebuffer_create(dev, r, file_priv);
c394c2b0
MR		 3376 if (IS_ERR(fb))
3377 return PTR_ERR(fb);
3378
9a6f5130
CW		 3379 /* Transfer ownership to the filp for reaping on close */
3380
3381 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3382 mutex_lock(&file_priv->fbs_lock);
3383 r->fb_id = fb->base.id;
3384 list_add(&fb->filp_head, &file_priv->fbs);
3385 mutex_unlock(&file_priv->fbs_lock);
3386
c394c2b0 3387 return 0;
f453ba04
DA		 3388}
3389
3390/**
3391 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 3392 * @dev: drm device for the ioctl
3393 * @data: data pointer for the ioctl
3394 * @file_priv: drm file for the ioctl call
f453ba04 3395 *
f453ba04
DA		 3396 * Remove the FB specified by the user.
3397 *
3398 * Called by the user via ioctl.
3399 *
c8e32cc1 3400 * Returns:
1a498633 3401 * Zero on success, negative errno on failure.
f453ba04
DA		 3402 */
3403int drm_mode_rmfb(struct drm_device *dev,
3404 void *data, struct drm_file *file_priv)
3405{
f453ba04
DA		 3406 struct drm_framebuffer *fb = NULL;
3407 struct drm_framebuffer *fbl = NULL;
3408 uint32_t *id = data;
f453ba04
DA		 3409 int found = 0;
3410
fb3b06c8
DA		 3411 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3412 return -EINVAL;
3413
4b096ac1 3414 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 3415 mutex_lock(&dev->mode_config.fb_lock);
3416 fb = __drm_framebuffer_lookup(dev, *id);
3417 if (!fb)
3418 goto fail_lookup;
3419
f453ba04
DA		 3420 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3421 if (fb == fbl)
3422 found = 1;
2b677e8c
DV		 3423 if (!found)
3424 goto fail_lookup;
3425
3426 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3427 __drm_framebuffer_unregister(dev, fb);
f453ba04 3428
4b096ac1 3429 list_del_init(&fb->filp_head);
2b677e8c 3430 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 3431 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3432
4b096ac1 3433 drm_framebuffer_remove(fb);
4b096ac1 3434
2b677e8c
DV		 3435 return 0;
3436
3437fail_lookup:
3438 mutex_unlock(&dev->mode_config.fb_lock);
3439 mutex_unlock(&file_priv->fbs_lock);
3440
37c4e705 3441 return -ENOENT;
f453ba04
DA		 3442}
3443
3444/**
3445 * drm_mode_getfb - get FB info
065a50ed
DV		 3446 * @dev: drm device for the ioctl
3447 * @data: data pointer for the ioctl
3448 * @file_priv: drm file for the ioctl call
f453ba04 3449 *
f453ba04
DA		 3450 * Lookup the FB given its ID and return info about it.
3451 *
3452 * Called by the user via ioctl.
3453 *
c8e32cc1 3454 * Returns:
1a498633 3455 * Zero on success, negative errno on failure.
f453ba04
DA		 3456 */
3457int drm_mode_getfb(struct drm_device *dev,
3458 void *data, struct drm_file *file_priv)
3459{
3460 struct drm_mode_fb_cmd *r = data;
f453ba04 3461 struct drm_framebuffer *fb;
58c0dca1 3462 int ret;
f453ba04 3463
fb3b06c8
DA		 3464 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3465 return -EINVAL;
3466
786b99ed 3467 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 3468 if (!fb)
37c4e705 3469 return -ENOENT;
f453ba04
DA		 3470
3471 r->height = fb->height;
3472 r->width = fb->width;
3473 r->depth = fb->depth;
3474 r->bpp = fb->bits_per_pixel;
01f2c773 3475 r->pitch = fb->pitches[0];
101b96f3 3476 if (fb->funcs->create_handle) {
09f308f7 3477 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 3478 drm_is_control_client(file_priv)) {
101b96f3
DH		 3479 ret = fb->funcs->create_handle(fb, file_priv,
3480 &r->handle);
3481 } else {
3482 /* GET_FB() is an unprivileged ioctl so we must not
3483 * return a buffer-handle to non-master processes! For
3484 * backwards-compatibility reasons, we cannot make
3485 * GET_FB() privileged, so just return an invalid handle
3486 * for non-masters. */
3487 r->handle = 0;
3488 ret = 0;
3489 }
3490 } else {
af26ef3b 3491 ret = -ENODEV;
101b96f3 3492 }
f453ba04 3493
58c0dca1
DV		 3494 drm_framebuffer_unreference(fb);
3495
f453ba04
DA		 3496 return ret;
3497}
3498
c8e32cc1
DV		 3499/**
3500 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3501 * @dev: drm device for the ioctl
3502 * @data: data pointer for the ioctl
3503 * @file_priv: drm file for the ioctl call
3504 *
3505 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3506 * rectangle list. Generic userspace which does frontbuffer rendering must call
3507 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3508 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3509 *
3510 * Modesetting drivers which always update the frontbuffer do not need to
3511 * implement the corresponding ->dirty framebuffer callback.
3512 *
3513 * Called by the user via ioctl.
3514 *
3515 * Returns:
1a498633 3516 * Zero on success, negative errno on failure.
c8e32cc1 3517 */
884840aa
JB		 3518int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3519 void *data, struct drm_file *file_priv)
3520{
3521 struct drm_clip_rect __user *clips_ptr;
3522 struct drm_clip_rect *clips = NULL;
3523 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 3524 struct drm_framebuffer *fb;
3525 unsigned flags;
3526 int num_clips;
4a1b0714 3527 int ret;
884840aa 3528
fb3b06c8
DA		 3529 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3530 return -EINVAL;
3531
786b99ed 3532 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 3533 if (!fb)
37c4e705 3534 return -ENOENT;
884840aa
JB		 3535
3536 num_clips = r->num_clips;
81f6c7f8 3537 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 3538
3539 if (!num_clips != !clips_ptr) {
3540 ret = -EINVAL;
3541 goto out_err1;
3542 }
3543
3544 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3545
3546 /* If userspace annotates copy, clips must come in pairs */
3547 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3548 ret = -EINVAL;
3549 goto out_err1;
3550 }
3551
3552 if (num_clips && clips_ptr) {
a5cd3351
XW		 3553 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3554 ret = -EINVAL;
3555 goto out_err1;
3556 }
bd3f0ff9 3557 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
884840aa
JB		 3558 if (!clips) {
3559 ret = -ENOMEM;
3560 goto out_err1;
3561 }
3562
3563 ret = copy_from_user(clips, clips_ptr,
3564 num_clips * sizeof(*clips));
e902a358
DC		 3565 if (ret) {
3566 ret = -EFAULT;
884840aa 3567 goto out_err2;
e902a358 3568 }
884840aa
JB		 3569 }
3570
3571 if (fb->funcs->dirty) {
02b00162
TH		 3572 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3573 clips, num_clips);
884840aa
JB		 3574 } else {
3575 ret = -ENOSYS;
884840aa
JB		 3576 }
3577
3578out_err2:
3579 kfree(clips);
3580out_err1:
4ccf097f
DV		 3581 drm_framebuffer_unreference(fb);
3582
884840aa
JB		 3583 return ret;
3584}
3585
3586
f453ba04
DA		 3587/**
3588 * drm_fb_release - remove and free the FBs on this file
065a50ed 3589 * @priv: drm file for the ioctl
f453ba04 3590 *
f453ba04
DA		 3591 * Destroy all the FBs associated with @filp.
3592 *
3593 * Called by the user via ioctl.
3594 *
c8e32cc1 3595 * Returns:
1a498633 3596 * Zero on success, negative errno on failure.
f453ba04 3597 */
ea39f835 3598void drm_fb_release(struct drm_file *priv)
f453ba04 3599{
f453ba04
DA		 3600 struct drm_device *dev = priv->minor->dev;
3601 struct drm_framebuffer *fb, *tfb;
3602
1b116297
DV		 3603 /*
3604 * When the file gets released that means no one else can access the fb
e2db726b 3605 * list any more, so no need to grab fpriv->fbs_lock. And we need to
1b116297
DV		 3606 * avoid upsetting lockdep since the universal cursor code adds a
3607 * framebuffer while holding mutex locks.
3608 *
3609 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3610 * locks is impossible here since no one else but this function can get
3611 * at it any more.
3612 */
f453ba04 3613 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2b677e8c
DV		 3614
3615 mutex_lock(&dev->mode_config.fb_lock);
3616 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3617 __drm_framebuffer_unregister(dev, fb);
3618 mutex_unlock(&dev->mode_config.fb_lock);
3619
4b096ac1 3620 list_del_init(&fb->filp_head);
2b677e8c
DV		 3621
3622 /* This will also drop the fpriv->fbs reference. */
f7eff60e 3623 drm_framebuffer_remove(fb);
f453ba04 3624 }
f453ba04
DA		 3625}
3626
c8e32cc1
DV		 3627/**
3628 * drm_property_create - create a new property type
3629 * @dev: drm device
3630 * @flags: flags specifying the property type
3631 * @name: name of the property
3632 * @num_values: number of pre-defined values
3633 *
3634 * This creates a new generic drm property which can then be attached to a drm
3635 * object with drm_object_attach_property. The returned property object must be
3636 * freed with drm_property_destroy.
3637 *
3b5b9932
DL		 3638 * Note that the DRM core keeps a per-device list of properties and that, if
3639 * drm_mode_config_cleanup() is called, it will destroy all properties created
3640 * by the driver.
3641 *
c8e32cc1
DV		 3642 * Returns:
3643 * A pointer to the newly created property on success, NULL on failure.
3644 */
f453ba04
DA		 3645struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3646 const char *name, int num_values)
3647{
3648 struct drm_property *property = NULL;
6bfc56aa 3649 int ret;
f453ba04
DA		 3650
3651 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3652 if (!property)
3653 return NULL;
3654
98f75de4
RC		 3655 property->dev = dev;
3656
f453ba04 3657 if (num_values) {
bd3f0ff9
TR		 3658 property->values = kcalloc(num_values, sizeof(uint64_t),
3659 GFP_KERNEL);
f453ba04
DA		 3660 if (!property->values)
3661 goto fail;
3662 }
3663
6bfc56aa
VS		 3664 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3665 if (ret)
3666 goto fail;
3667
f453ba04
DA		 3668 property->flags = flags;
3669 property->num_values = num_values;
3758b341 3670 INIT_LIST_HEAD(&property->enum_list);
f453ba04 3671
471dd2ef 3672 if (name) {
f453ba04 3673 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3674 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3675 }
f453ba04
DA		 3676
3677 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3678
3679 WARN_ON(!drm_property_type_valid(property));
3680
f453ba04
DA		 3681 return property;
3682fail:
6bfc56aa 3683 kfree(property->values);
f453ba04
DA		 3684 kfree(property);
3685 return NULL;
3686}
3687EXPORT_SYMBOL(drm_property_create);
3688
c8e32cc1 3689/**
2aa9d2bc 3690 * drm_property_create_enum - create a new enumeration property type
c8e32cc1
DV		 3691 * @dev: drm device
3692 * @flags: flags specifying the property type
3693 * @name: name of the property
3694 * @props: enumeration lists with property values
3695 * @num_values: number of pre-defined values
3696 *
3697 * This creates a new generic drm property which can then be attached to a drm
3698 * object with drm_object_attach_property. The returned property object must be
3699 * freed with drm_property_destroy.
3700 *
3701 * Userspace is only allowed to set one of the predefined values for enumeration
3702 * properties.
3703 *
3704 * Returns:
3705 * A pointer to the newly created property on success, NULL on failure.
3706 */
4a67d391
SH		 3707struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3708 const char *name,
3709 const struct drm_prop_enum_list *props,
3710 int num_values)
3711{
3712 struct drm_property *property;
3713 int i, ret;
3714
3715 flags |= DRM_MODE_PROP_ENUM;
3716
3717 property = drm_property_create(dev, flags, name, num_values);
3718 if (!property)
3719 return NULL;
3720
3721 for (i = 0; i < num_values; i++) {
3722 ret = drm_property_add_enum(property, i,
3723 props[i].type,
3724 props[i].name);
3725 if (ret) {
3726 drm_property_destroy(dev, property);
3727 return NULL;
3728 }
3729 }
3730
3731 return property;
3732}
3733EXPORT_SYMBOL(drm_property_create_enum);
3734
c8e32cc1 3735/**
2aa9d2bc 3736 * drm_property_create_bitmask - create a new bitmask property type
c8e32cc1
DV		 3737 * @dev: drm device
3738 * @flags: flags specifying the property type
3739 * @name: name of the property
3740 * @props: enumeration lists with property bitflags
295ee853
DV		 3741 * @num_props: size of the @props array
3742 * @supported_bits: bitmask of all supported enumeration values
c8e32cc1 3743 *
295ee853 3744 * This creates a new bitmask drm property which can then be attached to a drm
c8e32cc1
DV		 3745 * object with drm_object_attach_property. The returned property object must be
3746 * freed with drm_property_destroy.
3747 *
3748 * Compared to plain enumeration properties userspace is allowed to set any
3749 * or'ed together combination of the predefined property bitflag values
3750 *
3751 * Returns:
3752 * A pointer to the newly created property on success, NULL on failure.
3753 */
49e27545
RC		 3754struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3755 int flags, const char *name,
3756 const struct drm_prop_enum_list *props,
7689ffb3
VS		 3757 int num_props,
3758 uint64_t supported_bits)
49e27545
RC		 3759{
3760 struct drm_property *property;
7689ffb3
VS		 3761 int i, ret, index = 0;
3762 int num_values = hweight64(supported_bits);
49e27545
RC		 3763
3764 flags |= DRM_MODE_PROP_BITMASK;
3765
3766 property = drm_property_create(dev, flags, name, num_values);
3767 if (!property)
3768 return NULL;
7689ffb3
VS		 3769 for (i = 0; i < num_props; i++) {
3770 if (!(supported_bits & (1ULL << props[i].type)))
3771 continue;
49e27545 3772
7689ffb3
VS		 3773 if (WARN_ON(index >= num_values)) {
3774 drm_property_destroy(dev, property);
3775 return NULL;
3776 }
3777
3778 ret = drm_property_add_enum(property, index++,
49e27545
RC		 3779 props[i].type,
3780 props[i].name);
3781 if (ret) {
3782 drm_property_destroy(dev, property);
3783 return NULL;
3784 }
3785 }
3786
3787 return property;
3788}
3789EXPORT_SYMBOL(drm_property_create_bitmask);
3790
ebc44cf3
RC		 3791static struct drm_property *property_create_range(struct drm_device *dev,
3792 int flags, const char *name,
3793 uint64_t min, uint64_t max)
3794{
3795 struct drm_property *property;
3796
3797 property = drm_property_create(dev, flags, name, 2);
3798 if (!property)
3799 return NULL;
3800
3801 property->values[0] = min;
3802 property->values[1] = max;
3803
3804 return property;
3805}
3806
c8e32cc1 3807/**
960cd9d4 3808 * drm_property_create_range - create a new unsigned ranged property type
c8e32cc1
DV		 3809 * @dev: drm device
3810 * @flags: flags specifying the property type
3811 * @name: name of the property
3812 * @min: minimum value of the property
3813 * @max: maximum value of the property
3814 *
3815 * This creates a new generic drm property which can then be attached to a drm
3816 * object with drm_object_attach_property. The returned property object must be
3817 * freed with drm_property_destroy.
3818 *
960cd9d4
DV		 3819 * Userspace is allowed to set any unsigned integer value in the (min, max)
3820 * range inclusive.
c8e32cc1
DV		 3821 *
3822 * Returns:
3823 * A pointer to the newly created property on success, NULL on failure.
3824 */
d9bc3c02
SH		 3825struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3826 const char *name,
3827 uint64_t min, uint64_t max)
3828{
ebc44cf3
RC		 3829 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3830 name, min, max);
d9bc3c02
SH		 3831}
3832EXPORT_SYMBOL(drm_property_create_range);
3833
960cd9d4
DV		 3834/**
3835 * drm_property_create_signed_range - create a new signed ranged property type
3836 * @dev: drm device
3837 * @flags: flags specifying the property type
3838 * @name: name of the property
3839 * @min: minimum value of the property
3840 * @max: maximum value of the property
3841 *
3842 * This creates a new generic drm property which can then be attached to a drm
3843 * object with drm_object_attach_property. The returned property object must be
3844 * freed with drm_property_destroy.
3845 *
3846 * Userspace is allowed to set any signed integer value in the (min, max)
3847 * range inclusive.
3848 *
3849 * Returns:
3850 * A pointer to the newly created property on success, NULL on failure.
3851 */
ebc44cf3
RC		 3852struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3853 int flags, const char *name,
3854 int64_t min, int64_t max)
3855{
3856 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3857 name, I642U64(min), I642U64(max));
3858}
3859EXPORT_SYMBOL(drm_property_create_signed_range);
3860
960cd9d4
DV		 3861/**
3862 * drm_property_create_object - create a new object property type
3863 * @dev: drm device
3864 * @flags: flags specifying the property type
3865 * @name: name of the property
3866 * @type: object type from DRM_MODE_OBJECT_* defines
3867 *
3868 * This creates a new generic drm property which can then be attached to a drm
3869 * object with drm_object_attach_property. The returned property object must be
3870 * freed with drm_property_destroy.
3871 *
3872 * Userspace is only allowed to set this to any property value of the given
3873 * @type. Only useful for atomic properties, which is enforced.
3874 *
3875 * Returns:
3876 * A pointer to the newly created property on success, NULL on failure.
3877 */
98f75de4
RC		 3878struct drm_property *drm_property_create_object(struct drm_device *dev,
3879 int flags, const char *name, uint32_t type)
3880{
3881 struct drm_property *property;
3882
3883 flags |= DRM_MODE_PROP_OBJECT;
3884
960cd9d4
DV		 3885 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3886 return NULL;
3887
98f75de4
RC		 3888 property = drm_property_create(dev, flags, name, 1);
3889 if (!property)
3890 return NULL;
3891
3892 property->values[0] = type;
3893
3894 return property;
3895}
3896EXPORT_SYMBOL(drm_property_create_object);
3897
960cd9d4
DV		 3898/**
3899 * drm_property_create_bool - create a new boolean property type
3900 * @dev: drm device
3901 * @flags: flags specifying the property type
3902 * @name: name of the property
3903 *
3904 * This creates a new generic drm property which can then be attached to a drm
3905 * object with drm_object_attach_property. The returned property object must be
3906 * freed with drm_property_destroy.
3907 *
3908 * This is implemented as a ranged property with only {0, 1} as valid values.
3909 *
3910 * Returns:
3911 * A pointer to the newly created property on success, NULL on failure.
3912 */
3913struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3914 const char *name)
3915{
3916 return drm_property_create_range(dev, flags, name, 0, 1);
3917}
3918EXPORT_SYMBOL(drm_property_create_bool);
3919
c8e32cc1
DV		 3920/**
3921 * drm_property_add_enum - add a possible value to an enumeration property
3922 * @property: enumeration property to change
3923 * @index: index of the new enumeration
3924 * @value: value of the new enumeration
3925 * @name: symbolic name of the new enumeration
3926 *
3927 * This functions adds enumerations to a property.
3928 *
3929 * It's use is deprecated, drivers should use one of the more specific helpers
3930 * to directly create the property with all enumerations already attached.
3931 *
3932 * Returns:
3933 * Zero on success, error code on failure.
3934 */
f453ba04
DA		 3935int drm_property_add_enum(struct drm_property *property, int index,
3936 uint64_t value, const char *name)
3937{
3938 struct drm_property_enum *prop_enum;
3939
5ea22f24
RC		 3940 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3941 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 3942 return -EINVAL;
3943
3944 /*
3945 * Bitmask enum properties have the additional constraint of values
3946 * from 0 to 63
3947 */
5ea22f24
RC		 3948 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3949 (value > 63))
f453ba04
DA		 3950 return -EINVAL;
3951
3758b341
DV		 3952 if (!list_empty(&property->enum_list)) {
3953 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 3954 if (prop_enum->value == value) {
3955 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3956 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3957 return 0;
3958 }
3959 }
3960 }
3961
3962 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3963 if (!prop_enum)
3964 return -ENOMEM;
3965
3966 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3967 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3968 prop_enum->value = value;
3969
3970 property->values[index] = value;
3758b341 3971 list_add_tail(&prop_enum->head, &property->enum_list);
f453ba04
DA		 3972 return 0;
3973}
3974EXPORT_SYMBOL(drm_property_add_enum);
3975
c8e32cc1
DV		 3976/**
3977 * drm_property_destroy - destroy a drm property
3978 * @dev: drm device
3979 * @property: property to destry
3980 *
3981 * This function frees a property including any attached resources like
3982 * enumeration values.
3983 */
f453ba04
DA		 3984void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3985{
3986 struct drm_property_enum *prop_enum, *pt;
3987
3758b341 3988 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
f453ba04
DA		 3989 list_del(&prop_enum->head);
3990 kfree(prop_enum);
3991 }
3992
3993 if (property->num_values)
3994 kfree(property->values);
3995 drm_mode_object_put(dev, &property->base);
3996 list_del(&property->head);
3997 kfree(property);
3998}
3999EXPORT_SYMBOL(drm_property_destroy);
4000
c8e32cc1
DV		 4001/**
4002 * drm_object_attach_property - attach a property to a modeset object
4003 * @obj: drm modeset object
4004 * @property: property to attach
4005 * @init_val: initial value of the property
4006 *
4007 * This attaches the given property to the modeset object with the given initial
4008 * value. Currently this function cannot fail since the properties are stored in
4009 * a statically sized array.
4010 */
c543188a
PZ		 4011void drm_object_attach_property(struct drm_mode_object *obj,
4012 struct drm_property *property,
4013 uint64_t init_val)
4014{
7f88a9be 4015 int count = obj->properties->count;
c543188a 4016
7f88a9be
PZ		 4017 if (count == DRM_OBJECT_MAX_PROPERTY) {
4018 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4019 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4020 "you see this message on the same object type.\n",
4021 obj->type);
4022 return;
c543188a
PZ		 4023 }
4024
b17cd757 4025 obj->properties->properties[count] = property;
7f88a9be
PZ		 4026 obj->properties->values[count] = init_val;
4027 obj->properties->count++;
88a48e29
RC		 4028 if (property->flags & DRM_MODE_PROP_ATOMIC)
4029 obj->properties->atomic_count++;
c543188a
PZ		 4030}
4031EXPORT_SYMBOL(drm_object_attach_property);
4032
c8e32cc1
DV		 4033/**
4034 * drm_object_property_set_value - set the value of a property
4035 * @obj: drm mode object to set property value for
4036 * @property: property to set
4037 * @val: value the property should be set to
4038 *
4039 * This functions sets a given property on a given object. This function only
4040 * changes the software state of the property, it does not call into the
4041 * driver's ->set_property callback.
4042 *
4043 * Returns:
4044 * Zero on success, error code on failure.
4045 */
c543188a
PZ		 4046int drm_object_property_set_value(struct drm_mode_object *obj,
4047 struct drm_property *property, uint64_t val)
4048{
4049 int i;
4050
7f88a9be 4051 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4052 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4053 obj->properties->values[i] = val;
4054 return 0;
4055 }
4056 }
4057
4058 return -EINVAL;
4059}
4060EXPORT_SYMBOL(drm_object_property_set_value);
4061
c8e32cc1
DV		 4062/**
4063 * drm_object_property_get_value - retrieve the value of a property
4064 * @obj: drm mode object to get property value from
4065 * @property: property to retrieve
4066 * @val: storage for the property value
4067 *
4068 * This function retrieves the softare state of the given property for the given
4069 * property. Since there is no driver callback to retrieve the current property
4070 * value this might be out of sync with the hardware, depending upon the driver
4071 * and property.
4072 *
4073 * Returns:
4074 * Zero on success, error code on failure.
4075 */
c543188a
PZ		 4076int drm_object_property_get_value(struct drm_mode_object *obj,
4077 struct drm_property *property, uint64_t *val)
4078{
4079 int i;
4080
88a48e29
RC		 4081 /* read-only properties bypass atomic mechanism and still store
4082 * their value in obj->properties->values[].. mostly to avoid
4083 * having to deal w/ EDID and similar props in atomic paths:
4084 */
4085 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4086 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4087 return drm_atomic_get_property(obj, property, val);
4088
7f88a9be 4089 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4090 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4091 *val = obj->properties->values[i];
4092 return 0;
4093 }
4094 }
4095
4096 return -EINVAL;
4097}
4098EXPORT_SYMBOL(drm_object_property_get_value);
4099
c8e32cc1 4100/**
1a498633 4101 * drm_mode_getproperty_ioctl - get the property metadata
c8e32cc1
DV		 4102 * @dev: DRM device
4103 * @data: ioctl data
4104 * @file_priv: DRM file info
4105 *
1a498633
DV		 4106 * This function retrieves the metadata for a given property, like the different
4107 * possible values for an enum property or the limits for a range property.
4108 *
4109 * Blob properties are special
c8e32cc1
DV		 4110 *
4111 * Called by the user via ioctl.
4112 *
4113 * Returns:
1a498633 4114 * Zero on success, negative errno on failure.
c8e32cc1 4115 */
f453ba04
DA		 4116int drm_mode_getproperty_ioctl(struct drm_device *dev,
4117 void *data, struct drm_file *file_priv)
4118{
f453ba04
DA		 4119 struct drm_mode_get_property *out_resp = data;
4120 struct drm_property *property;
4121 int enum_count = 0;
f453ba04
DA		 4122 int value_count = 0;
4123 int ret = 0, i;
4124 int copied;
4125 struct drm_property_enum *prop_enum;
4126 struct drm_mode_property_enum __user *enum_ptr;
f453ba04 4127 uint64_t __user *values_ptr;
f453ba04 4128
fb3b06c8
DA		 4129 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4130 return -EINVAL;
4131
84849903 4132 drm_modeset_lock_all(dev);
a2b34e22
RC		 4133 property = drm_property_find(dev, out_resp->prop_id);
4134 if (!property) {
f27657f2 4135 ret = -ENOENT;
f453ba04
DA		 4136 goto done;
4137 }
f453ba04 4138
5ea22f24
RC		 4139 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4140 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3758b341 4141 list_for_each_entry(prop_enum, &property->enum_list, head)
f453ba04 4142 enum_count++;
f453ba04
DA		 4143 }
4144
4145 value_count = property->num_values;
4146
4147 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4148 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4149 out_resp->flags = property->flags;
4150
4151 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 4152 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 4153 for (i = 0; i < value_count; i++) {
4154 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4155 ret = -EFAULT;
4156 goto done;
4157 }
4158 }
4159 }
4160 out_resp->count_values = value_count;
4161
5ea22f24
RC		 4162 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4163 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 4164 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4165 copied = 0;
81f6c7f8 4166 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3758b341 4167 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 4168
4169 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4170 ret = -EFAULT;
4171 goto done;
4172 }
4173
4174 if (copy_to_user(&enum_ptr[copied].name,
4175 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4176 ret = -EFAULT;
4177 goto done;
4178 }
4179 copied++;
4180 }
4181 }
4182 out_resp->count_enum_blobs = enum_count;
4183 }
4184
3758b341
DV		 4185 /*
4186 * NOTE: The idea seems to have been to use this to read all the blob
4187 * property values. But nothing ever added them to the corresponding
4188 * list, userspace always used the special-purpose get_blob ioctl to
4189 * read the value for a blob property. It also doesn't make a lot of
4190 * sense to return values here when everything else is just metadata for
4191 * the property itself.
4192 */
4193 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4194 out_resp->count_enum_blobs = 0;
f453ba04 4195done:
84849903 4196 drm_modeset_unlock_all(dev);
f453ba04
DA		 4197 return ret;
4198}
4199
ecbbe59b
TR		 4200static struct drm_property_blob *
4201drm_property_create_blob(struct drm_device *dev, size_t length,
12e6cecd 4202 const void *data)
f453ba04
DA		 4203{
4204 struct drm_property_blob *blob;
6bfc56aa 4205 int ret;
f453ba04
DA		 4206
4207 if (!length || !data)
4208 return NULL;
4209
4210 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4211 if (!blob)
4212 return NULL;
4213
6bfc56aa
VS		 4214 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4215 if (ret) {
4216 kfree(blob);
4217 return NULL;
4218 }
4219
f453ba04
DA		 4220 blob->length = length;
4221
4222 memcpy(blob->data, data, length);
4223
f453ba04
DA		 4224 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4225 return blob;
4226}
4227
4228static void drm_property_destroy_blob(struct drm_device *dev,
4229 struct drm_property_blob *blob)
4230{
4231 drm_mode_object_put(dev, &blob->base);
4232 list_del(&blob->head);
4233 kfree(blob);
4234}
4235
c8e32cc1
DV		 4236/**
4237 * drm_mode_getblob_ioctl - get the contents of a blob property value
4238 * @dev: DRM device
4239 * @data: ioctl data
4240 * @file_priv: DRM file info
4241 *
4242 * This function retrieves the contents of a blob property. The value stored in
4243 * an object's blob property is just a normal modeset object id.
4244 *
4245 * Called by the user via ioctl.
4246 *
4247 * Returns:
1a498633 4248 * Zero on success, negative errno on failure.
c8e32cc1 4249 */
f453ba04
DA		 4250int drm_mode_getblob_ioctl(struct drm_device *dev,
4251 void *data, struct drm_file *file_priv)
4252{
f453ba04
DA		 4253 struct drm_mode_get_blob *out_resp = data;
4254 struct drm_property_blob *blob;
4255 int ret = 0;
81f6c7f8 4256 void __user *blob_ptr;
f453ba04 4257
fb3b06c8
DA		 4258 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4259 return -EINVAL;
4260
84849903 4261 drm_modeset_lock_all(dev);
a2b34e22
RC		 4262 blob = drm_property_blob_find(dev, out_resp->blob_id);
4263 if (!blob) {
f27657f2 4264 ret = -ENOENT;
f453ba04
DA		 4265 goto done;
4266 }
f453ba04
DA		 4267
4268 if (out_resp->length == blob->length) {
81f6c7f8 4269 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4dfd909f 4270 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
f453ba04
DA		 4271 ret = -EFAULT;
4272 goto done;
4273 }
4274 }
4275 out_resp->length = blob->length;
4276
4277done:
84849903 4278 drm_modeset_unlock_all(dev);
f453ba04
DA		 4279 return ret;
4280}
4281
cc7096fb
DA		 4282/**
4283 * drm_mode_connector_set_path_property - set tile property on connector
4284 * @connector: connector to set property on.
4285 * @path: path to use for property.
4286 *
4287 * This creates a property to expose to userspace to specify a
4288 * connector path. This is mainly used for DisplayPort MST where
4289 * connectors have a topology and we want to allow userspace to give
4290 * them more meaningful names.
4291 *
4292 * Returns:
1a498633 4293 * Zero on success, negative errno on failure.
cc7096fb 4294 */
43aba7eb 4295int drm_mode_connector_set_path_property(struct drm_connector *connector,
12e6cecd 4296 const char *path)
43aba7eb
DA		 4297{
4298 struct drm_device *dev = connector->dev;
ecbbe59b
TR		 4299 size_t size = strlen(path) + 1;
4300 int ret;
43aba7eb
DA		 4301
4302 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4303 size, path);
4304 if (!connector->path_blob_ptr)
4305 return -EINVAL;
4306
4307 ret = drm_object_property_set_value(&connector->base,
4308 dev->mode_config.path_property,
4309 connector->path_blob_ptr->base.id);
4310 return ret;
4311}
4312EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4313
6f134d7b
DA		 4314/**
4315 * drm_mode_connector_set_tile_property - set tile property on connector
4316 * @connector: connector to set property on.
4317 *
4318 * This looks up the tile information for a connector, and creates a
4319 * property for userspace to parse if it exists. The property is of
4320 * the form of 8 integers using ':' as a separator.
4321 *
4322 * Returns:
4323 * Zero on success, errno on failure.
4324 */
4325int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4326{
4327 struct drm_device *dev = connector->dev;
4328 int ret, size;
4329 char tile[256];
4330
4331 if (connector->tile_blob_ptr)
4332 drm_property_destroy_blob(dev, connector->tile_blob_ptr);
4333
4334 if (!connector->has_tile) {
4335 connector->tile_blob_ptr = NULL;
4336 ret = drm_object_property_set_value(&connector->base,
4337 dev->mode_config.tile_property, 0);
4338 return ret;
4339 }
4340
4341 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4342 connector->tile_group->id, connector->tile_is_single_monitor,
4343 connector->num_h_tile, connector->num_v_tile,
4344 connector->tile_h_loc, connector->tile_v_loc,
4345 connector->tile_h_size, connector->tile_v_size);
4346 size = strlen(tile) + 1;
4347
4348 connector->tile_blob_ptr = drm_property_create_blob(connector->dev,
4349 size, tile);
4350 if (!connector->tile_blob_ptr)
4351 return -EINVAL;
4352
4353 ret = drm_object_property_set_value(&connector->base,
4354 dev->mode_config.tile_property,
4355 connector->tile_blob_ptr->base.id);
4356 return ret;
4357}
4358EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4359
c8e32cc1
DV		 4360/**
4361 * drm_mode_connector_update_edid_property - update the edid property of a connector
4362 * @connector: drm connector
4363 * @edid: new value of the edid property
4364 *
4365 * This function creates a new blob modeset object and assigns its id to the
4366 * connector's edid property.
4367 *
4368 * Returns:
1a498633 4369 * Zero on success, negative errno on failure.
c8e32cc1 4370 */
f453ba04 4371int drm_mode_connector_update_edid_property(struct drm_connector *connector,
12e6cecd 4372 const struct edid *edid)
f453ba04
DA		 4373{
4374 struct drm_device *dev = connector->dev;
ecbbe59b
TR		 4375 size_t size;
4376 int ret;
f453ba04 4377
4cf2b281
TW		 4378 /* ignore requests to set edid when overridden */
4379 if (connector->override_edid)
4380 return 0;
4381
f453ba04
DA		 4382 if (connector->edid_blob_ptr)
4383 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4384
4385 /* Delete edid, when there is none. */
4386 if (!edid) {
4387 connector->edid_blob_ptr = NULL;
58495563 4388 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
f453ba04
DA		 4389 return ret;
4390 }
4391
7466f4cc
AJ		 4392 size = EDID_LENGTH * (1 + edid->extensions);
4393 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4394 size, edid);
e655d122
SK		 4395 if (!connector->edid_blob_ptr)
4396 return -EINVAL;
f453ba04 4397
58495563 4398 ret = drm_object_property_set_value(&connector->base,
f453ba04
DA		 4399 dev->mode_config.edid_property,
4400 connector->edid_blob_ptr->base.id);
4401
4402 return ret;
4403}
4404EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4405
3843e71f
RC		 4406/* Some properties could refer to dynamic refcnt'd objects, or things that
4407 * need special locking to handle lifetime issues (ie. to ensure the prop
4408 * value doesn't become invalid part way through the property update due to
4409 * race). The value returned by reference via 'obj' should be passed back
4410 * to drm_property_change_valid_put() after the property is set (and the
4411 * object to which the property is attached has a chance to take it's own
4412 * reference).
4413 */
d34f20d6 4414bool drm_property_change_valid_get(struct drm_property *property,
3843e71f 4415 uint64_t value, struct drm_mode_object **ref)
26a34815 4416{
2ca651d1
TR		 4417 int i;
4418
26a34815
PZ		 4419 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4420 return false;
5ea22f24 4421
3843e71f
RC		 4422 *ref = NULL;
4423
5ea22f24 4424 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 4425 if (value < property->values[0] || value > property->values[1])
4426 return false;
4427 return true;
ebc44cf3
RC		 4428 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4429 int64_t svalue = U642I64(value);
4dfd909f 4430
ebc44cf3
RC		 4431 if (svalue < U642I64(property->values[0]) ||
4432 svalue > U642I64(property->values[1]))
4433 return false;
4434 return true;
5ea22f24 4435 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
592c20ee 4436 uint64_t valid_mask = 0;
4dfd909f 4437
49e27545
RC		 4438 for (i = 0; i < property->num_values; i++)
4439 valid_mask |= (1ULL << property->values[i]);
4440 return !(value & ~valid_mask);
5ea22f24 4441 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
c4a56750
VS		 4442 /* Only the driver knows */
4443 return true;
98f75de4 4444 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
98f75de4
RC		 4445 /* a zero value for an object property translates to null: */
4446 if (value == 0)
4447 return true;
3843e71f
RC		 4448
4449 /* handle refcnt'd objects specially: */
4450 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4451 struct drm_framebuffer *fb;
4452 fb = drm_framebuffer_lookup(property->dev, value);
4453 if (fb) {
4454 *ref = &fb->base;
4455 return true;
4456 } else {
4457 return false;
4458 }
4459 } else {
4460 return _object_find(property->dev, value, property->values[0]) != NULL;
4461 }
26a34815 4462 }
2ca651d1
TR		 4463
4464 for (i = 0; i < property->num_values; i++)
4465 if (property->values[i] == value)
4466 return true;
4467 return false;
26a34815
PZ		 4468}
4469
d34f20d6 4470void drm_property_change_valid_put(struct drm_property *property,
3843e71f
RC		 4471 struct drm_mode_object *ref)
4472{
4473 if (!ref)
4474 return;
4475
4476 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4477 if (property->values[0] == DRM_MODE_OBJECT_FB)
4478 drm_framebuffer_unreference(obj_to_fb(ref));
4479 }
4480}
4481
c8e32cc1
DV		 4482/**
4483 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4484 * @dev: DRM device
4485 * @data: ioctl data
4486 * @file_priv: DRM file info
4487 *
4488 * This function sets the current value for a connectors's property. It also
4489 * calls into a driver's ->set_property callback to update the hardware state
4490 *
4491 * Called by the user via ioctl.
4492 *
4493 * Returns:
1a498633 4494 * Zero on success, negative errno on failure.
c8e32cc1 4495 */
f453ba04
DA		 4496int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4497 void *data, struct drm_file *file_priv)
4498{
0057d8dd
PZ		 4499 struct drm_mode_connector_set_property *conn_set_prop = data;
4500 struct drm_mode_obj_set_property obj_set_prop = {
4501 .value = conn_set_prop->value,
4502 .prop_id = conn_set_prop->prop_id,
4503 .obj_id = conn_set_prop->connector_id,
4504 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4505 };
fb3b06c8 4506
0057d8dd
PZ		 4507 /* It does all the locking and checking we need */
4508 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 4509}
4510
c543188a
PZ		 4511static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4512 struct drm_property *property,
4513 uint64_t value)
4514{
4515 int ret = -EINVAL;
4516 struct drm_connector *connector = obj_to_connector(obj);
4517
4518 /* Do DPMS ourselves */
4519 if (property == connector->dev->mode_config.dpms_property) {
4520 if (connector->funcs->dpms)
4521 (*connector->funcs->dpms)(connector, (int)value);
4522 ret = 0;
4523 } else if (connector->funcs->set_property)
4524 ret = connector->funcs->set_property(connector, property, value);
4525
4526 /* store the property value if successful */
4527 if (!ret)
58495563 4528 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 4529 return ret;
4530}
4531
bffd9de0
PZ		 4532static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4533 struct drm_property *property,
4534 uint64_t value)
4535{
4536 int ret = -EINVAL;
4537 struct drm_crtc *crtc = obj_to_crtc(obj);
4538
4539 if (crtc->funcs->set_property)
4540 ret = crtc->funcs->set_property(crtc, property, value);
4541 if (!ret)
4542 drm_object_property_set_value(obj, property, value);
4543
4544 return ret;
4545}
4546
3a5f87c2
TW		 4547/**
4548 * drm_mode_plane_set_obj_prop - set the value of a property
4549 * @plane: drm plane object to set property value for
4550 * @property: property to set
4551 * @value: value the property should be set to
4552 *
4553 * This functions sets a given property on a given plane object. This function
4554 * calls the driver's ->set_property callback and changes the software state of
4555 * the property if the callback succeeds.
4556 *
4557 * Returns:
4558 * Zero on success, error code on failure.
4559 */
4560int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4561 struct drm_property *property,
4562 uint64_t value)
4d93914a
RC		 4563{
4564 int ret = -EINVAL;
3a5f87c2 4565 struct drm_mode_object *obj = &plane->base;
4d93914a
RC		 4566
4567 if (plane->funcs->set_property)
4568 ret = plane->funcs->set_property(plane, property, value);
4569 if (!ret)
4570 drm_object_property_set_value(obj, property, value);
4571
4572 return ret;
4573}
3a5f87c2 4574EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4d93914a 4575
c8e32cc1 4576/**
1a498633 4577 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
c8e32cc1
DV		 4578 * @dev: DRM device
4579 * @data: ioctl data
4580 * @file_priv: DRM file info
4581 *
4582 * This function retrieves the current value for an object's property. Compared
4583 * to the connector specific ioctl this one is extended to also work on crtc and
4584 * plane objects.
4585 *
4586 * Called by the user via ioctl.
4587 *
4588 * Returns:
1a498633 4589 * Zero on success, negative errno on failure.
c8e32cc1 4590 */
c543188a
PZ		 4591int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4592 struct drm_file *file_priv)
4593{
4594 struct drm_mode_obj_get_properties *arg = data;
4595 struct drm_mode_object *obj;
4596 int ret = 0;
c543188a
PZ		 4597
4598 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4599 return -EINVAL;
4600
84849903 4601 drm_modeset_lock_all(dev);
c543188a
PZ		 4602
4603 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4604 if (!obj) {
f27657f2 4605 ret = -ENOENT;
c543188a
PZ		 4606 goto out;
4607 }
4608 if (!obj->properties) {
4609 ret = -EINVAL;
4610 goto out;
4611 }
4612
88a48e29 4613 ret = get_properties(obj, file_priv->atomic,
95cbf110
RC		 4614 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4615 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4616 &arg->count_props);
c543188a 4617
c543188a 4618out:
84849903 4619 drm_modeset_unlock_all(dev);
c543188a
PZ		 4620 return ret;
4621}
4622
c8e32cc1
DV		 4623/**
4624 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4625 * @dev: DRM device
4626 * @data: ioctl data
4627 * @file_priv: DRM file info
4628 *
4629 * This function sets the current value for an object's property. It also calls
4630 * into a driver's ->set_property callback to update the hardware state.
4631 * Compared to the connector specific ioctl this one is extended to also work on
4632 * crtc and plane objects.
4633 *
4634 * Called by the user via ioctl.
4635 *
4636 * Returns:
1a498633 4637 * Zero on success, negative errno on failure.
c8e32cc1 4638 */
c543188a
PZ		 4639int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4640 struct drm_file *file_priv)
4641{
4642 struct drm_mode_obj_set_property *arg = data;
4643 struct drm_mode_object *arg_obj;
4644 struct drm_mode_object *prop_obj;
4645 struct drm_property *property;
3843e71f
RC		 4646 int i, ret = -EINVAL;
4647 struct drm_mode_object *ref;
c543188a
PZ		 4648
4649 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4650 return -EINVAL;
4651
84849903 4652 drm_modeset_lock_all(dev);
c543188a
PZ		 4653
4654 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 4655 if (!arg_obj) {
4656 ret = -ENOENT;
c543188a 4657 goto out;
f27657f2 4658 }
c543188a
PZ		 4659 if (!arg_obj->properties)
4660 goto out;
4661
7f88a9be 4662 for (i = 0; i < arg_obj->properties->count; i++)
b17cd757 4663 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
c543188a
PZ		 4664 break;
4665
7f88a9be 4666 if (i == arg_obj->properties->count)
c543188a
PZ		 4667 goto out;
4668
4669 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4670 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 4671 if (!prop_obj) {
4672 ret = -ENOENT;
c543188a 4673 goto out;
f27657f2 4674 }
c543188a
PZ		 4675 property = obj_to_property(prop_obj);
4676
3843e71f 4677 if (!drm_property_change_valid_get(property, arg->value, &ref))
c543188a
PZ		 4678 goto out;
4679
4680 switch (arg_obj->type) {
4681 case DRM_MODE_OBJECT_CONNECTOR:
4682 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4683 arg->value);
4684 break;
bffd9de0
PZ		 4685 case DRM_MODE_OBJECT_CRTC:
4686 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4687 break;
4d93914a 4688 case DRM_MODE_OBJECT_PLANE:
3a5f87c2
TW		 4689 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4690 property, arg->value);
4d93914a 4691 break;
c543188a
PZ		 4692 }
4693
3843e71f
RC		 4694 drm_property_change_valid_put(property, ref);
4695
c543188a 4696out:
84849903 4697 drm_modeset_unlock_all(dev);
c543188a
PZ		 4698 return ret;
4699}
4700
c8e32cc1
DV		 4701/**
4702 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4703 * @connector: connector to attach
4704 * @encoder: encoder to attach @connector to
4705 *
4706 * This function links up a connector to an encoder. Note that the routing
4707 * restrictions between encoders and crtcs are exposed to userspace through the
4708 * possible_clones and possible_crtcs bitmasks.
4709 *
4710 * Returns:
1a498633 4711 * Zero on success, negative errno on failure.
c8e32cc1 4712 */
f453ba04
DA		 4713int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4714 struct drm_encoder *encoder)
4715{
4716 int i;
4717
4718 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4719 if (connector->encoder_ids[i] == 0) {
4720 connector->encoder_ids[i] = encoder->base.id;
4721 return 0;
4722 }
4723 }
4724 return -ENOMEM;
4725}
4726EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4727
c8e32cc1
DV		 4728/**
4729 * drm_mode_crtc_set_gamma_size - set the gamma table size
4730 * @crtc: CRTC to set the gamma table size for
4731 * @gamma_size: size of the gamma table
4732 *
4733 * Drivers which support gamma tables should set this to the supported gamma
4734 * table size when initializing the CRTC. Currently the drm core only supports a
4735 * fixed gamma table size.
4736 *
4737 * Returns:
1a498633 4738 * Zero on success, negative errno on failure.
c8e32cc1 4739 */
4cae5b84 4740int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 4741 int gamma_size)
f453ba04
DA		 4742{
4743 crtc->gamma_size = gamma_size;
4744
bd3f0ff9
TR		 4745 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
4746 GFP_KERNEL);
f453ba04
DA		 4747 if (!crtc->gamma_store) {
4748 crtc->gamma_size = 0;
4cae5b84 4749 return -ENOMEM;
f453ba04
DA		 4750 }
4751
4cae5b84 4752 return 0;
f453ba04
DA		 4753}
4754EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4755
c8e32cc1
DV		 4756/**
4757 * drm_mode_gamma_set_ioctl - set the gamma table
4758 * @dev: DRM device
4759 * @data: ioctl data
4760 * @file_priv: DRM file info
4761 *
4762 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4763 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4764 *
4765 * Called by the user via ioctl.
4766 *
4767 * Returns:
1a498633 4768 * Zero on success, negative errno on failure.
c8e32cc1 4769 */
f453ba04
DA		 4770int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4771 void *data, struct drm_file *file_priv)
4772{
4773 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4774 struct drm_crtc *crtc;
4775 void *r_base, *g_base, *b_base;
4776 int size;
4777 int ret = 0;
4778
fb3b06c8
DA		 4779 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4780 return -EINVAL;
4781
84849903 4782 drm_modeset_lock_all(dev);
a2b34e22
RC		 4783 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4784 if (!crtc) {
f27657f2 4785 ret = -ENOENT;
f453ba04
DA		 4786 goto out;
4787 }
f453ba04 4788
ebe0f244
LP		 4789 if (crtc->funcs->gamma_set == NULL) {
4790 ret = -ENOSYS;
4791 goto out;
4792 }
4793
f453ba04
DA		 4794 /* memcpy into gamma store */
4795 if (crtc_lut->gamma_size != crtc->gamma_size) {
4796 ret = -EINVAL;
4797 goto out;
4798 }
4799
4800 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4801 r_base = crtc->gamma_store;
4802 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4803 ret = -EFAULT;
4804 goto out;
4805 }
4806
4807 g_base = r_base + size;
4808 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4809 ret = -EFAULT;
4810 goto out;
4811 }
4812
4813 b_base = g_base + size;
4814 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4815 ret = -EFAULT;
4816 goto out;
4817 }
4818
7203425a 4819 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 4820
4821out:
84849903 4822 drm_modeset_unlock_all(dev);
f453ba04
DA		 4823 return ret;
4824
4825}
4826
c8e32cc1
DV		 4827/**
4828 * drm_mode_gamma_get_ioctl - get the gamma table
4829 * @dev: DRM device
4830 * @data: ioctl data
4831 * @file_priv: DRM file info
4832 *
4833 * Copy the current gamma table into the storage provided. This also provides
4834 * the gamma table size the driver expects, which can be used to size the
4835 * allocated storage.
4836 *
4837 * Called by the user via ioctl.
4838 *
4839 * Returns:
1a498633 4840 * Zero on success, negative errno on failure.
c8e32cc1 4841 */
f453ba04
DA		 4842int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4843 void *data, struct drm_file *file_priv)
4844{
4845 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4846 struct drm_crtc *crtc;
4847 void *r_base, *g_base, *b_base;
4848 int size;
4849 int ret = 0;
4850
fb3b06c8
DA		 4851 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4852 return -EINVAL;
4853
84849903 4854 drm_modeset_lock_all(dev);
a2b34e22
RC		 4855 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4856 if (!crtc) {
f27657f2 4857 ret = -ENOENT;
f453ba04
DA		 4858 goto out;
4859 }
f453ba04
DA		 4860
4861 /* memcpy into gamma store */
4862 if (crtc_lut->gamma_size != crtc->gamma_size) {
4863 ret = -EINVAL;
4864 goto out;
4865 }
4866
4867 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4868 r_base = crtc->gamma_store;
4869 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4870 ret = -EFAULT;
4871 goto out;
4872 }
4873
4874 g_base = r_base + size;
4875 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4876 ret = -EFAULT;
4877 goto out;
4878 }
4879
4880 b_base = g_base + size;
4881 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4882 ret = -EFAULT;
4883 goto out;
4884 }
4885out:
84849903 4886 drm_modeset_unlock_all(dev);
f453ba04
DA		 4887 return ret;
4888}
d91d8a3f 4889
c8e32cc1
DV		 4890/**
4891 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4892 * @dev: DRM device
4893 * @data: ioctl data
4894 * @file_priv: DRM file info
4895 *
4896 * This schedules an asynchronous update on a given CRTC, called page flip.
4897 * Optionally a drm event is generated to signal the completion of the event.
4898 * Generic drivers cannot assume that a pageflip with changed framebuffer
4899 * properties (including driver specific metadata like tiling layout) will work,
4900 * but some drivers support e.g. pixel format changes through the pageflip
4901 * ioctl.
4902 *
4903 * Called by the user via ioctl.
4904 *
4905 * Returns:
1a498633 4906 * Zero on success, negative errno on failure.
c8e32cc1 4907 */
d91d8a3f
KH		 4908int drm_mode_page_flip_ioctl(struct drm_device *dev,
4909 void *data, struct drm_file *file_priv)
4910{
4911 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 4912 struct drm_crtc *crtc;
3d30a59b 4913 struct drm_framebuffer *fb = NULL;
d91d8a3f
KH		 4914 struct drm_pending_vblank_event *e = NULL;
4915 unsigned long flags;
4916 int ret = -EINVAL;
4917
4918 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4919 page_flip->reserved != 0)
4920 return -EINVAL;
4921
62f2104f
KP		 4922 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4923 return -EINVAL;
4924
a2b34e22
RC		 4925 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4926 if (!crtc)
f27657f2 4927 return -ENOENT;
d91d8a3f 4928
4d02e2de 4929 drm_modeset_lock_crtc(crtc, crtc->primary);
f4510a27 4930 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 4931 /* The framebuffer is currently unbound, presumably
4932 * due to a hotplug event, that userspace has not
4933 * yet discovered.
4934 */
4935 ret = -EBUSY;
4936 goto out;
4937 }
4938
d91d8a3f
KH		 4939 if (crtc->funcs->page_flip == NULL)
4940 goto out;
4941
786b99ed 4942 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 4943 if (!fb) {
4944 ret = -ENOENT;
d91d8a3f 4945 goto out;
37c4e705 4946 }
d91d8a3f 4947
c11e9283
DL		 4948 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4949 if (ret)
5f61bb42 4950 goto out;
5f61bb42 4951
f4510a27 4952 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 4953 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4954 ret = -EINVAL;
4955 goto out;
4956 }
4957
d91d8a3f
KH		 4958 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4959 ret = -ENOMEM;
4960 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 4961 if (file_priv->event_space < sizeof(e->event)) {
d91d8a3f
KH		 4962 spin_unlock_irqrestore(&dev->event_lock, flags);
4963 goto out;
4964 }
f76511b9 4965 file_priv->event_space -= sizeof(e->event);
d91d8a3f
KH		 4966 spin_unlock_irqrestore(&dev->event_lock, flags);
4967
f76511b9 4968 e = kzalloc(sizeof(*e), GFP_KERNEL);
d91d8a3f
KH		 4969 if (e == NULL) {
4970 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 4971 file_priv->event_space += sizeof(e->event);
d91d8a3f
KH		 4972 spin_unlock_irqrestore(&dev->event_lock, flags);
4973 goto out;
4974 }
4975
7bd4d7be 4976 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
f76511b9 4977 e->event.base.length = sizeof(e->event);
d91d8a3f
KH		 4978 e->event.user_data = page_flip->user_data;
4979 e->base.event = &e->event.base;
4980 e->base.file_priv = file_priv;
4981 e->base.destroy =
4982 (void (*) (struct drm_pending_event *)) kfree;
4983 }
4984
3d30a59b 4985 crtc->primary->old_fb = crtc->primary->fb;
ed8d1975 4986 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 4987 if (ret) {
aef6a7ee
JS		 4988 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4989 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 4990 file_priv->event_space += sizeof(e->event);
aef6a7ee
JS		 4991 spin_unlock_irqrestore(&dev->event_lock, flags);
4992 kfree(e);
4993 }
b0d12325 4994 /* Keep the old fb, don't unref it. */
3d30a59b 4995 crtc->primary->old_fb = NULL;
b0d12325 4996 } else {
8cf1e981
TR		 4997 /*
4998 * Warn if the driver hasn't properly updated the crtc->fb
4999 * field to reflect that the new framebuffer is now used.
5000 * Failing to do so will screw with the reference counting
5001 * on framebuffers.
5002 */
f4510a27 5003 WARN_ON(crtc->primary->fb != fb);
b0d12325
DV		 5004 /* Unref only the old framebuffer. */
5005 fb = NULL;
d91d8a3f
KH		 5006 }
5007
5008out:
b0d12325
DV		 5009 if (fb)
5010 drm_framebuffer_unreference(fb);
3d30a59b
DV		 5011 if (crtc->primary->old_fb)
5012 drm_framebuffer_unreference(crtc->primary->old_fb);
5013 crtc->primary->old_fb = NULL;
d059f652 5014 drm_modeset_unlock_crtc(crtc);
b4d5e7d1 5015
d91d8a3f
KH		 5016 return ret;
5017}
eb033556 5018
c8e32cc1
DV		 5019/**
5020 * drm_mode_config_reset - call ->reset callbacks
5021 * @dev: drm device
5022 *
5023 * This functions calls all the crtc's, encoder's and connector's ->reset
5024 * callback. Drivers can use this in e.g. their driver load or resume code to
5025 * reset hardware and software state.
5026 */
eb033556
CW		 5027void drm_mode_config_reset(struct drm_device *dev)
5028{
5029 struct drm_crtc *crtc;
2a0d7cfd 5030 struct drm_plane *plane;
eb033556
CW		 5031 struct drm_encoder *encoder;
5032 struct drm_connector *connector;
5033
2a0d7cfd
DV		 5034 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
5035 if (plane->funcs->reset)
5036 plane->funcs->reset(plane);
5037
eb033556
CW		 5038 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
5039 if (crtc->funcs->reset)
5040 crtc->funcs->reset(crtc);
5041
5042 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
5043 if (encoder->funcs->reset)
5044 encoder->funcs->reset(encoder);
5045
5e2cb2f6
DV		 5046 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
5047 connector->status = connector_status_unknown;
5048
eb033556
CW		 5049 if (connector->funcs->reset)
5050 connector->funcs->reset(connector);
5e2cb2f6 5051 }
eb033556
CW		 5052}
5053EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 5054
c8e32cc1
DV		 5055/**
5056 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5057 * @dev: DRM device
5058 * @data: ioctl data
5059 * @file_priv: DRM file info
5060 *
5061 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5062 * TTM or something else entirely) and returns the resulting buffer handle. This
5063 * handle can then be wrapped up into a framebuffer modeset object.
5064 *
5065 * Note that userspace is not allowed to use such objects for render
5066 * acceleration - drivers must create their own private ioctls for such a use
5067 * case.
5068 *
5069 * Called by the user via ioctl.
5070 *
5071 * Returns:
1a498633 5072 * Zero on success, negative errno on failure.
c8e32cc1 5073 */
ff72145b
DA		 5074int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5075 void *data, struct drm_file *file_priv)
5076{
5077 struct drm_mode_create_dumb *args = data;
b28cd41f 5078 u32 cpp, stride, size;
ff72145b
DA		 5079
5080 if (!dev->driver->dumb_create)
5081 return -ENOSYS;
b28cd41f
DH		 5082 if (!args->width || !args->height || !args->bpp)
5083 return -EINVAL;
5084
5085 /* overflow checks for 32bit size calculations */
00e72089 5086 /* NOTE: DIV_ROUND_UP() can overflow */
b28cd41f 5087 cpp = DIV_ROUND_UP(args->bpp, 8);
00e72089 5088 if (!cpp || cpp > 0xffffffffU / args->width)
b28cd41f
DH		 5089 return -EINVAL;
5090 stride = cpp * args->width;
5091 if (args->height > 0xffffffffU / stride)
5092 return -EINVAL;
5093
5094 /* test for wrap-around */
5095 size = args->height * stride;
5096 if (PAGE_ALIGN(size) == 0)
5097 return -EINVAL;
5098
f6085952
TR		 5099 /*
5100 * handle, pitch and size are output parameters. Zero them out to
5101 * prevent drivers from accidentally using uninitialized data. Since
5102 * not all existing userspace is clearing these fields properly we
5103 * cannot reject IOCTL with garbage in them.
5104 */
5105 args->handle = 0;
5106 args->pitch = 0;
5107 args->size = 0;
5108
ff72145b
DA		 5109 return dev->driver->dumb_create(file_priv, dev, args);
5110}
5111
c8e32cc1
DV		 5112/**
5113 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5114 * @dev: DRM device
5115 * @data: ioctl data
5116 * @file_priv: DRM file info
5117 *
5118 * Allocate an offset in the drm device node's address space to be able to
5119 * memory map a dumb buffer.
5120 *
5121 * Called by the user via ioctl.
5122 *
5123 * Returns:
1a498633 5124 * Zero on success, negative errno on failure.
c8e32cc1 5125 */
ff72145b
DA		 5126int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5127 void *data, struct drm_file *file_priv)
5128{
5129 struct drm_mode_map_dumb *args = data;
5130
5131 /* call driver ioctl to get mmap offset */
5132 if (!dev->driver->dumb_map_offset)
5133 return -ENOSYS;
5134
5135 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5136}
5137
c8e32cc1
DV		 5138/**
5139 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5140 * @dev: DRM device
5141 * @data: ioctl data
5142 * @file_priv: DRM file info
5143 *
5144 * This destroys the userspace handle for the given dumb backing storage buffer.
5145 * Since buffer objects must be reference counted in the kernel a buffer object
5146 * won't be immediately freed if a framebuffer modeset object still uses it.
5147 *
5148 * Called by the user via ioctl.
5149 *
5150 * Returns:
1a498633 5151 * Zero on success, negative errno on failure.
c8e32cc1 5152 */
ff72145b
DA		 5153int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5154 void *data, struct drm_file *file_priv)
5155{
5156 struct drm_mode_destroy_dumb *args = data;
5157
5158 if (!dev->driver->dumb_destroy)
5159 return -ENOSYS;
5160
5161 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5162}
248dbc23 5163
c8e32cc1
DV		 5164/**
5165 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5166 * @format: pixel format (DRM_FORMAT_*)
5167 * @depth: storage for the depth value
5168 * @bpp: storage for the bpp value
5169 *
5170 * This only supports RGB formats here for compat with code that doesn't use
5171 * pixel formats directly yet.
248dbc23
DA		 5172 */
5173void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5174 int *bpp)
5175{
5176 switch (format) {
c51a6bc5 5177 case DRM_FORMAT_C8:
04b3924d
VS		 5178 case DRM_FORMAT_RGB332:
5179 case DRM_FORMAT_BGR233:
248dbc23
DA		 5180 *depth = 8;
5181 *bpp = 8;
5182 break;
04b3924d
VS		 5183 case DRM_FORMAT_XRGB1555:
5184 case DRM_FORMAT_XBGR1555:
5185 case DRM_FORMAT_RGBX5551:
5186 case DRM_FORMAT_BGRX5551:
5187 case DRM_FORMAT_ARGB1555:
5188 case DRM_FORMAT_ABGR1555:
5189 case DRM_FORMAT_RGBA5551:
5190 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 5191 *depth = 15;
5192 *bpp = 16;
5193 break;
04b3924d
VS		 5194 case DRM_FORMAT_RGB565:
5195 case DRM_FORMAT_BGR565:
248dbc23
DA		 5196 *depth = 16;
5197 *bpp = 16;
5198 break;
04b3924d
VS		 5199 case DRM_FORMAT_RGB888:
5200 case DRM_FORMAT_BGR888:
5201 *depth = 24;
5202 *bpp = 24;
5203 break;
5204 case DRM_FORMAT_XRGB8888:
5205 case DRM_FORMAT_XBGR8888:
5206 case DRM_FORMAT_RGBX8888:
5207 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 5208 *depth = 24;
5209 *bpp = 32;
5210 break;
04b3924d
VS		 5211 case DRM_FORMAT_XRGB2101010:
5212 case DRM_FORMAT_XBGR2101010:
5213 case DRM_FORMAT_RGBX1010102:
5214 case DRM_FORMAT_BGRX1010102:
5215 case DRM_FORMAT_ARGB2101010:
5216 case DRM_FORMAT_ABGR2101010:
5217 case DRM_FORMAT_RGBA1010102:
5218 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 5219 *depth = 30;
5220 *bpp = 32;
5221 break;
04b3924d
VS		 5222 case DRM_FORMAT_ARGB8888:
5223 case DRM_FORMAT_ABGR8888:
5224 case DRM_FORMAT_RGBA8888:
5225 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 5226 *depth = 32;
5227 *bpp = 32;
5228 break;
5229 default:
23c453a4
VS		 5230 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5231 drm_get_format_name(format));
248dbc23
DA		 5232 *depth = 0;
5233 *bpp = 0;
5234 break;
5235 }
5236}
5237EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 5238
5239/**
5240 * drm_format_num_planes - get the number of planes for format
5241 * @format: pixel format (DRM_FORMAT_*)
5242 *
c8e32cc1 5243 * Returns:
141670e9
VS		 5244 * The number of planes used by the specified pixel format.
5245 */
5246int drm_format_num_planes(uint32_t format)
5247{
5248 switch (format) {
5249 case DRM_FORMAT_YUV410:
5250 case DRM_FORMAT_YVU410:
5251 case DRM_FORMAT_YUV411:
5252 case DRM_FORMAT_YVU411:
5253 case DRM_FORMAT_YUV420:
5254 case DRM_FORMAT_YVU420:
5255 case DRM_FORMAT_YUV422:
5256 case DRM_FORMAT_YVU422:
5257 case DRM_FORMAT_YUV444:
5258 case DRM_FORMAT_YVU444:
5259 return 3;
5260 case DRM_FORMAT_NV12:
5261 case DRM_FORMAT_NV21:
5262 case DRM_FORMAT_NV16:
5263 case DRM_FORMAT_NV61:
ba623f6a
LP		 5264 case DRM_FORMAT_NV24:
5265 case DRM_FORMAT_NV42:
141670e9
VS		 5266 return 2;
5267 default:
5268 return 1;
5269 }
5270}
5271EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 5272
5273/**
5274 * drm_format_plane_cpp - determine the bytes per pixel value
5275 * @format: pixel format (DRM_FORMAT_*)
5276 * @plane: plane index
5277 *
c8e32cc1 5278 * Returns:
5a86bd55
VS		 5279 * The bytes per pixel value for the specified plane.
5280 */
5281int drm_format_plane_cpp(uint32_t format, int plane)
5282{
5283 unsigned int depth;
5284 int bpp;
5285
5286 if (plane >= drm_format_num_planes(format))
5287 return 0;
5288
5289 switch (format) {
5290 case DRM_FORMAT_YUYV:
5291 case DRM_FORMAT_YVYU:
5292 case DRM_FORMAT_UYVY:
5293 case DRM_FORMAT_VYUY:
5294 return 2;
5295 case DRM_FORMAT_NV12:
5296 case DRM_FORMAT_NV21:
5297 case DRM_FORMAT_NV16:
5298 case DRM_FORMAT_NV61:
ba623f6a
LP		 5299 case DRM_FORMAT_NV24:
5300 case DRM_FORMAT_NV42:
5a86bd55
VS		 5301 return plane ? 2 : 1;
5302 case DRM_FORMAT_YUV410:
5303 case DRM_FORMAT_YVU410:
5304 case DRM_FORMAT_YUV411:
5305 case DRM_FORMAT_YVU411:
5306 case DRM_FORMAT_YUV420:
5307 case DRM_FORMAT_YVU420:
5308 case DRM_FORMAT_YUV422:
5309 case DRM_FORMAT_YVU422:
5310 case DRM_FORMAT_YUV444:
5311 case DRM_FORMAT_YVU444:
5312 return 1;
5313 default:
5314 drm_fb_get_bpp_depth(format, &depth, &bpp);
5315 return bpp >> 3;
5316 }
5317}
5318EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 5319
5320/**
5321 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5322 * @format: pixel format (DRM_FORMAT_*)
5323 *
c8e32cc1 5324 * Returns:
01b68b04
VS		 5325 * The horizontal chroma subsampling factor for the
5326 * specified pixel format.
5327 */
5328int drm_format_horz_chroma_subsampling(uint32_t format)
5329{
5330 switch (format) {
5331 case DRM_FORMAT_YUV411:
5332 case DRM_FORMAT_YVU411:
5333 case DRM_FORMAT_YUV410:
5334 case DRM_FORMAT_YVU410:
5335 return 4;
5336 case DRM_FORMAT_YUYV:
5337 case DRM_FORMAT_YVYU:
5338 case DRM_FORMAT_UYVY:
5339 case DRM_FORMAT_VYUY:
5340 case DRM_FORMAT_NV12:
5341 case DRM_FORMAT_NV21:
5342 case DRM_FORMAT_NV16:
5343 case DRM_FORMAT_NV61:
5344 case DRM_FORMAT_YUV422:
5345 case DRM_FORMAT_YVU422:
5346 case DRM_FORMAT_YUV420:
5347 case DRM_FORMAT_YVU420:
5348 return 2;
5349 default:
5350 return 1;
5351 }
5352}
5353EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5354
5355/**
5356 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5357 * @format: pixel format (DRM_FORMAT_*)
5358 *
c8e32cc1 5359 * Returns:
01b68b04
VS		 5360 * The vertical chroma subsampling factor for the
5361 * specified pixel format.
5362 */
5363int drm_format_vert_chroma_subsampling(uint32_t format)
5364{
5365 switch (format) {
5366 case DRM_FORMAT_YUV410:
5367 case DRM_FORMAT_YVU410:
5368 return 4;
5369 case DRM_FORMAT_YUV420:
5370 case DRM_FORMAT_YVU420:
5371 case DRM_FORMAT_NV12:
5372 case DRM_FORMAT_NV21:
5373 return 2;
5374 default:
5375 return 1;
5376 }
5377}
5378EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3 5379
3c9855f6
VS		 5380/**
5381 * drm_rotation_simplify() - Try to simplify the rotation
5382 * @rotation: Rotation to be simplified
5383 * @supported_rotations: Supported rotations
5384 *
5385 * Attempt to simplify the rotation to a form that is supported.
5386 * Eg. if the hardware supports everything except DRM_REFLECT_X
5387 * one could call this function like this:
5388 *
5389 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5390 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5391 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5392 *
5393 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5394 * transforms the hardware supports, this function may not
5395 * be able to produce a supported transform, so the caller should
5396 * check the result afterwards.
5397 */
5398unsigned int drm_rotation_simplify(unsigned int rotation,
5399 unsigned int supported_rotations)
5400{
5401 if (rotation & ~supported_rotations) {
5402 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5403 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5404 }
5405
5406 return rotation;
5407}
5408EXPORT_SYMBOL(drm_rotation_simplify);
5409
87d24fc3
LP		 5410/**
5411 * drm_mode_config_init - initialize DRM mode_configuration structure
5412 * @dev: DRM device
5413 *
5414 * Initialize @dev's mode_config structure, used for tracking the graphics
5415 * configuration of @dev.
5416 *
5417 * Since this initializes the modeset locks, no locking is possible. Which is no
5418 * problem, since this should happen single threaded at init time. It is the
5419 * driver's problem to ensure this guarantee.
5420 *
5421 */
5422void drm_mode_config_init(struct drm_device *dev)
5423{
5424 mutex_init(&dev->mode_config.mutex);
51fd371b 5425 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5426 mutex_init(&dev->mode_config.idr_mutex);
5427 mutex_init(&dev->mode_config.fb_lock);
5428 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5429 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5430 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5431 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5432 INIT_LIST_HEAD(&dev->mode_config.property_list);
5433 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5434 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5435 idr_init(&dev->mode_config.crtc_idr);
138f9ebb 5436 idr_init(&dev->mode_config.tile_idr);
87d24fc3
LP		 5437
5438 drm_modeset_lock_all(dev);
6b4959f4 5439 drm_mode_create_standard_properties(dev);
87d24fc3
LP		 5440 drm_modeset_unlock_all(dev);
5441
5442 /* Just to be sure */
5443 dev->mode_config.num_fb = 0;
5444 dev->mode_config.num_connector = 0;
5445 dev->mode_config.num_crtc = 0;
5446 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 5447 dev->mode_config.num_overlay_plane = 0;
5448 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 5449}
5450EXPORT_SYMBOL(drm_mode_config_init);
5451
5452/**
5453 * drm_mode_config_cleanup - free up DRM mode_config info
5454 * @dev: DRM device
5455 *
5456 * Free up all the connectors and CRTCs associated with this DRM device, then
5457 * free up the framebuffers and associated buffer objects.
5458 *
5459 * Note that since this /should/ happen single-threaded at driver/device
5460 * teardown time, no locking is required. It's the driver's job to ensure that
5461 * this guarantee actually holds true.
5462 *
5463 * FIXME: cleanup any dangling user buffer objects too
5464 */
5465void drm_mode_config_cleanup(struct drm_device *dev)
5466{
5467 struct drm_connector *connector, *ot;
5468 struct drm_crtc *crtc, *ct;
5469 struct drm_encoder *encoder, *enct;
5470 struct drm_framebuffer *fb, *fbt;
5471 struct drm_property *property, *pt;
5472 struct drm_property_blob *blob, *bt;
5473 struct drm_plane *plane, *plt;
5474
5475 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5476 head) {
5477 encoder->funcs->destroy(encoder);
5478 }
5479
5480 list_for_each_entry_safe(connector, ot,
5481 &dev->mode_config.connector_list, head) {
5482 connector->funcs->destroy(connector);
5483 }
5484
5485 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5486 head) {
5487 drm_property_destroy(dev, property);
5488 }
5489
5490 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5491 head) {
5492 drm_property_destroy_blob(dev, blob);
5493 }
5494
5495 /*
5496 * Single-threaded teardown context, so it's not required to grab the
5497 * fb_lock to protect against concurrent fb_list access. Contrary, it
5498 * would actually deadlock with the drm_framebuffer_cleanup function.
5499 *
5500 * Also, if there are any framebuffers left, that's a driver leak now,
5501 * so politely WARN about this.
5502 */
5503 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5504 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5505 drm_framebuffer_remove(fb);
5506 }
5507
5508 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5509 head) {
5510 plane->funcs->destroy(plane);
5511 }
5512
5513 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5514 crtc->funcs->destroy(crtc);
5515 }
5516
138f9ebb 5517 idr_destroy(&dev->mode_config.tile_idr);
87d24fc3 5518 idr_destroy(&dev->mode_config.crtc_idr);
51fd371b 5519 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5520}
5521EXPORT_SYMBOL(drm_mode_config_cleanup);
c1df5f3c
VS		 5522
5523struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5524 unsigned int supported_rotations)
5525{
5526 static const struct drm_prop_enum_list props[] = {
5527 { DRM_ROTATE_0, "rotate-0" },
5528 { DRM_ROTATE_90, "rotate-90" },
5529 { DRM_ROTATE_180, "rotate-180" },
5530 { DRM_ROTATE_270, "rotate-270" },
5531 { DRM_REFLECT_X, "reflect-x" },
5532 { DRM_REFLECT_Y, "reflect-y" },
5533 };
5534
5535 return drm_property_create_bitmask(dev, 0, "rotation",
5536 props, ARRAY_SIZE(props),
5537 supported_rotations);
5538}
5539EXPORT_SYMBOL(drm_mode_create_rotation_property);
138f9ebb
DA		 5540
5541/**
5542 * DOC: Tile group
5543 *
5544 * Tile groups are used to represent tiled monitors with a unique
5545 * integer identifier. Tiled monitors using DisplayID v1.3 have
5546 * a unique 8-byte handle, we store this in a tile group, so we
5547 * have a common identifier for all tiles in a monitor group.
5548 */
5549static void drm_tile_group_free(struct kref *kref)
5550{
5551 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5552 struct drm_device *dev = tg->dev;
5553 mutex_lock(&dev->mode_config.idr_mutex);
5554 idr_remove(&dev->mode_config.tile_idr, tg->id);
5555 mutex_unlock(&dev->mode_config.idr_mutex);
5556 kfree(tg);
5557}
5558
5559/**
5560 * drm_mode_put_tile_group - drop a reference to a tile group.
5561 * @dev: DRM device
5562 * @tg: tile group to drop reference to.
5563 *
5564 * drop reference to tile group and free if 0.
5565 */
5566void drm_mode_put_tile_group(struct drm_device *dev,
5567 struct drm_tile_group *tg)
5568{
5569 kref_put(&tg->refcount, drm_tile_group_free);
5570}
5571
5572/**
5573 * drm_mode_get_tile_group - get a reference to an existing tile group
5574 * @dev: DRM device
5575 * @topology: 8-bytes unique per monitor.
5576 *
5577 * Use the unique bytes to get a reference to an existing tile group.
5578 *
5579 * RETURNS:
5580 * tile group or NULL if not found.
5581 */
5582struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5583 char topology[8])
5584{
5585 struct drm_tile_group *tg;
5586 int id;
5587 mutex_lock(&dev->mode_config.idr_mutex);
5588 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5589 if (!memcmp(tg->group_data, topology, 8)) {
5590 if (!kref_get_unless_zero(&tg->refcount))
5591 tg = NULL;
5592 mutex_unlock(&dev->mode_config.idr_mutex);
5593 return tg;
5594 }
5595 }
5596 mutex_unlock(&dev->mode_config.idr_mutex);
5597 return NULL;
5598}
5599
5600/**
5601 * drm_mode_create_tile_group - create a tile group from a displayid description
5602 * @dev: DRM device
5603 * @topology: 8-bytes unique per monitor.
5604 *
5605 * Create a tile group for the unique monitor, and get a unique
5606 * identifier for the tile group.
5607 *
5608 * RETURNS:
5609 * new tile group or error.
5610 */
5611struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5612 char topology[8])
5613{
5614 struct drm_tile_group *tg;
5615 int ret;
5616
5617 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5618 if (!tg)
5619 return ERR_PTR(-ENOMEM);
5620
5621 kref_init(&tg->refcount);
5622 memcpy(tg->group_data, topology, 8);
5623 tg->dev = dev;
5624
5625 mutex_lock(&dev->mode_config.idr_mutex);
5626 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5627 if (ret >= 0) {
5628 tg->id = ret;
5629 } else {
5630 kfree(tg);
5631 tg = ERR_PTR(ret);
5632 }
5633
5634 mutex_unlock(&dev->mode_config.idr_mutex);
5635 return tg;
5636}
Linux kernel - Deliverables
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