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gpu: drm: Fix warning caused by a parameter description in drm_crtc.c
[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>
f453ba04 41
8bd441b2 42#include "drm_crtc_internal.h"
67d0ec4e 43#include "drm_internal.h"
8bd441b2 44
c394c2b0
MR		 45static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
46 struct drm_mode_fb_cmd2 *r,
47 struct drm_file *file_priv);
48
f453ba04
DA		 49/* Avoid boilerplate. I'm tired of typing. */
50#define DRM_ENUM_NAME_FN(fnname, list) \
d20d3174 51 const char *fnname(int val) \
f453ba04
DA		 52 { \
53 int i; \
54 for (i = 0; i < ARRAY_SIZE(list); i++) { \
55 if (list[i].type == val) \
56 return list[i].name; \
57 } \
58 return "(unknown)"; \
59 }
60
61/*
62 * Global properties
63 */
d20d3174 64static const struct drm_prop_enum_list drm_dpms_enum_list[] =
f453ba04
DA		 65{ { DRM_MODE_DPMS_ON, "On" },
66 { DRM_MODE_DPMS_STANDBY, "Standby" },
67 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
68 { DRM_MODE_DPMS_OFF, "Off" }
69};
70
71DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
72
9922ab5a
RC		 73static const struct drm_prop_enum_list drm_plane_type_enum_list[] =
74{
75 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
78};
79
f453ba04
DA		 80/*
81 * Optional properties
82 */
d20d3174 83static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
f453ba04 84{
53bd8389
JB		 85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 89};
90
ff587e45
VK		 91static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
95};
96
f453ba04
DA		 97/*
98 * Non-global properties, but "required" for certain connectors.
99 */
d20d3174 100static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
f453ba04
DA		 101{
102 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
103 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
104 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
105};
106
107DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
108
d20d3174 109static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
f453ba04
DA		 110{
111 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
112 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
113 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
114};
115
116DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
117 drm_dvi_i_subconnector_enum_list)
118
d20d3174 119static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
f453ba04
DA		 120{
121 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 125 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 126};
127
128DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
129
d20d3174 130static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
f453ba04
DA		 131{
132 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
133 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
134 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
135 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 136 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 137};
138
139DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
140 drm_tv_subconnector_enum_list)
141
d20d3174 142static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
884840aa
JB		 143 { DRM_MODE_DIRTY_OFF, "Off" },
144 { DRM_MODE_DIRTY_ON, "On" },
145 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
146};
147
f453ba04
DA		 148struct drm_conn_prop_enum_list {
149 int type;
d20d3174 150 const char *name;
b21e3afe 151 struct ida ida;
f453ba04
DA		 152};
153
154/*
155 * Connector and encoder types.
156 */
157static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
b21e3afe
IM		 158{ { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
159 { DRM_MODE_CONNECTOR_VGA, "VGA" },
160 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
161 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
162 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
163 { DRM_MODE_CONNECTOR_Composite, "Composite" },
164 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
165 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
166 { DRM_MODE_CONNECTOR_Component, "Component" },
167 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
168 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
169 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
170 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
171 { DRM_MODE_CONNECTOR_TV, "TV" },
172 { DRM_MODE_CONNECTOR_eDP, "eDP" },
173 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
b8923273 174 { DRM_MODE_CONNECTOR_DSI, "DSI" },
f453ba04
DA		 175};
176
d20d3174 177static const struct drm_prop_enum_list drm_encoder_enum_list[] =
f453ba04
DA		 178{ { DRM_MODE_ENCODER_NONE, "None" },
179 { DRM_MODE_ENCODER_DAC, "DAC" },
180 { DRM_MODE_ENCODER_TMDS, "TMDS" },
181 { DRM_MODE_ENCODER_LVDS, "LVDS" },
182 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 183 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
b8923273 184 { DRM_MODE_ENCODER_DSI, "DSI" },
182407a6 185 { DRM_MODE_ENCODER_DPMST, "DP MST" },
f453ba04
DA		 186};
187
ac1bb36c
JB		 188static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
189{
190 { SubPixelUnknown, "Unknown" },
191 { SubPixelHorizontalRGB, "Horizontal RGB" },
192 { SubPixelHorizontalBGR, "Horizontal BGR" },
193 { SubPixelVerticalRGB, "Vertical RGB" },
194 { SubPixelVerticalBGR, "Vertical BGR" },
195 { SubPixelNone, "None" },
196};
197
b21e3afe
IM		 198void drm_connector_ida_init(void)
199{
200 int i;
201
202 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
203 ida_init(&drm_connector_enum_list[i].ida);
204}
205
206void drm_connector_ida_destroy(void)
207{
208 int i;
209
210 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
211 ida_destroy(&drm_connector_enum_list[i].ida);
212}
213
c8e32cc1
DV		 214/**
215 * drm_get_connector_status_name - return a string for connector status
216 * @status: connector status to compute name of
217 *
218 * In contrast to the other drm_get_*_name functions this one here returns a
219 * const pointer and hence is threadsafe.
220 */
d20d3174 221const char *drm_get_connector_status_name(enum drm_connector_status status)
f453ba04
DA		 222{
223 if (status == connector_status_connected)
224 return "connected";
225 else if (status == connector_status_disconnected)
226 return "disconnected";
227 else
228 return "unknown";
229}
ed7951dc 230EXPORT_SYMBOL(drm_get_connector_status_name);
f453ba04 231
ac1bb36c
JB		 232/**
233 * drm_get_subpixel_order_name - return a string for a given subpixel enum
234 * @order: enum of subpixel_order
235 *
236 * Note you could abuse this and return something out of bounds, but that
237 * would be a caller error. No unscrubbed user data should make it here.
238 */
239const char *drm_get_subpixel_order_name(enum subpixel_order order)
240{
241 return drm_subpixel_enum_list[order].name;
242}
243EXPORT_SYMBOL(drm_get_subpixel_order_name);
244
6ba6d03e
VS		 245static char printable_char(int c)
246{
247 return isascii(c) && isprint(c) ? c : '?';
248}
249
c8e32cc1
DV		 250/**
251 * drm_get_format_name - return a string for drm fourcc format
252 * @format: format to compute name of
253 *
254 * Note that the buffer used by this function is globally shared and owned by
255 * the function itself.
256 *
257 * FIXME: This isn't really multithreading safe.
258 */
d20d3174 259const char *drm_get_format_name(uint32_t format)
6ba6d03e
VS		 260{
261 static char buf[32];
262
263 snprintf(buf, sizeof(buf),
264 "%c%c%c%c %s-endian (0x%08x)",
265 printable_char(format & 0xff),
266 printable_char((format >> 8) & 0xff),
267 printable_char((format >> 16) & 0xff),
268 printable_char((format >> 24) & 0x7f),
269 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
270 format);
271
272 return buf;
273}
274EXPORT_SYMBOL(drm_get_format_name);
275
2ee39452
DA		 276/*
277 * Internal function to assign a slot in the object idr and optionally
278 * register the object into the idr.
279 */
280static int drm_mode_object_get_reg(struct drm_device *dev,
281 struct drm_mode_object *obj,
282 uint32_t obj_type,
283 bool register_obj)
284{
285 int ret;
286
287 mutex_lock(&dev->mode_config.idr_mutex);
288 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
289 if (ret >= 0) {
290 /*
291 * Set up the object linking under the protection of the idr
292 * lock so that other users can't see inconsistent state.
293 */
294 obj->id = ret;
295 obj->type = obj_type;
296 }
297 mutex_unlock(&dev->mode_config.idr_mutex);
298
299 return ret < 0 ? ret : 0;
300}
301
f453ba04 302/**
065a50ed 303 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 304 * @dev: DRM device
065a50ed
DV		 305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
f453ba04 307 *
f453ba04 308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
c8e32cc1
DV		 309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
f453ba04 312 *
c8e32cc1 313 * Returns:
f453ba04
DA		 314 * New unique (relative to other objects in @dev) integer identifier for the
315 * object.
316 */
8bd441b2
DV		 317int drm_mode_object_get(struct drm_device *dev,
318 struct drm_mode_object *obj, uint32_t obj_type)
f453ba04 319{
2ee39452
DA		 320 return drm_mode_object_get_reg(dev, obj, obj_type, true);
321}
f453ba04 322
2ee39452
DA		 323static void drm_mode_object_register(struct drm_device *dev,
324 struct drm_mode_object *obj)
325{
ad2563c2 326 mutex_lock(&dev->mode_config.idr_mutex);
2ee39452 327 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
ad2563c2 328 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 329}
330
331/**
065a50ed 332 * drm_mode_object_put - free a modeset identifer
f453ba04 333 * @dev: DRM device
065a50ed 334 * @object: object to free
f453ba04 335 *
c8e32cc1
DV		 336 * Free @id from @dev's unique identifier pool. Note that despite the _get
337 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
338 * for reference counted modeset objects like framebuffers.
f453ba04 339 */
8bd441b2
DV		 340void drm_mode_object_put(struct drm_device *dev,
341 struct drm_mode_object *object)
f453ba04 342{
ad2563c2 343 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 344 idr_remove(&dev->mode_config.crtc_idr, object->id);
ad2563c2 345 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 346}
347
98f75de4
RC		 348static struct drm_mode_object *_object_find(struct drm_device *dev,
349 uint32_t id, uint32_t type)
350{
351 struct drm_mode_object *obj = NULL;
352
353 mutex_lock(&dev->mode_config.idr_mutex);
354 obj = idr_find(&dev->mode_config.crtc_idr, id);
168c02ec
DV		 355 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
356 obj = NULL;
357 if (obj && obj->id != id)
358 obj = NULL;
359 /* don't leak out unref'd fb's */
360 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
98f75de4
RC		 361 obj = NULL;
362 mutex_unlock(&dev->mode_config.idr_mutex);
363
364 return obj;
365}
366
786b99ed
DV		 367/**
368 * drm_mode_object_find - look up a drm object with static lifetime
369 * @dev: drm device
370 * @id: id of the mode object
371 * @type: type of the mode object
372 *
373 * Note that framebuffers cannot be looked up with this functions - since those
98f75de4
RC		 374 * are reference counted, they need special treatment. Even with
375 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
376 * rather than WARN_ON()).
786b99ed 377 */
7a9c9060
DV		 378struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
379 uint32_t id, uint32_t type)
f453ba04 380{
ad2563c2 381 struct drm_mode_object *obj = NULL;
f453ba04 382
786b99ed
DV		 383 /* Framebuffers are reference counted and need their own lookup
384 * function.*/
385 WARN_ON(type == DRM_MODE_OBJECT_FB);
98f75de4 386 obj = _object_find(dev, id, type);
f453ba04
DA		 387 return obj;
388}
389EXPORT_SYMBOL(drm_mode_object_find);
390
f453ba04
DA		 391/**
392 * drm_framebuffer_init - initialize a framebuffer
393 * @dev: DRM device
065a50ed
DV		 394 * @fb: framebuffer to be initialized
395 * @funcs: ... with these functions
f453ba04 396 *
f453ba04
DA		 397 * Allocates an ID for the framebuffer's parent mode object, sets its mode
398 * functions & device file and adds it to the master fd list.
399 *
4b096ac1
DV		 400 * IMPORTANT:
401 * This functions publishes the fb and makes it available for concurrent access
402 * by other users. Which means by this point the fb _must_ be fully set up -
403 * since all the fb attributes are invariant over its lifetime, no further
404 * locking but only correct reference counting is required.
405 *
c8e32cc1 406 * Returns:
af901ca1 407 * Zero on success, error code on failure.
f453ba04
DA		 408 */
409int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
410 const struct drm_framebuffer_funcs *funcs)
411{
412 int ret;
413
4b096ac1 414 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e 415 kref_init(&fb->refcount);
4b096ac1
DV		 416 INIT_LIST_HEAD(&fb->filp_head);
417 fb->dev = dev;
418 fb->funcs = funcs;
f7eff60e 419
f453ba04 420 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
6bfc56aa 421 if (ret)
4b096ac1 422 goto out;
f453ba04 423
f453ba04
DA		 424 dev->mode_config.num_fb++;
425 list_add(&fb->head, &dev->mode_config.fb_list);
4b096ac1
DV		 426out:
427 mutex_unlock(&dev->mode_config.fb_lock);
f453ba04
DA		 428
429 return 0;
430}
431EXPORT_SYMBOL(drm_framebuffer_init);
432
83f45fc3
DV		 433/* dev->mode_config.fb_lock must be held! */
434static void __drm_framebuffer_unregister(struct drm_device *dev,
435 struct drm_framebuffer *fb)
436{
437 mutex_lock(&dev->mode_config.idr_mutex);
438 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
439 mutex_unlock(&dev->mode_config.idr_mutex);
440
441 fb->base.id = 0;
442}
443
f7eff60e
RC		 444static void drm_framebuffer_free(struct kref *kref)
445{
446 struct drm_framebuffer *fb =
447 container_of(kref, struct drm_framebuffer, refcount);
83f45fc3
DV		 448 struct drm_device *dev = fb->dev;
449
450 /*
451 * The lookup idr holds a weak reference, which has not necessarily been
452 * removed at this point. Check for that.
453 */
454 mutex_lock(&dev->mode_config.fb_lock);
455 if (fb->base.id) {
456 /* Mark fb as reaped and drop idr ref. */
457 __drm_framebuffer_unregister(dev, fb);
458 }
459 mutex_unlock(&dev->mode_config.fb_lock);
460
f7eff60e
RC		 461 fb->funcs->destroy(fb);
462}
463
2b677e8c
DV		 464static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
465 uint32_t id)
466{
467 struct drm_mode_object *obj = NULL;
468 struct drm_framebuffer *fb;
469
470 mutex_lock(&dev->mode_config.idr_mutex);
471 obj = idr_find(&dev->mode_config.crtc_idr, id);
472 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
473 fb = NULL;
474 else
475 fb = obj_to_fb(obj);
476 mutex_unlock(&dev->mode_config.idr_mutex);
477
478 return fb;
479}
480
786b99ed
DV		 481/**
482 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
483 * @dev: drm device
484 * @id: id of the fb object
485 *
486 * If successful, this grabs an additional reference to the framebuffer -
487 * callers need to make sure to eventually unreference the returned framebuffer
c8e32cc1 488 * again, using @drm_framebuffer_unreference.
786b99ed
DV		 489 */
490struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
491 uint32_t id)
492{
786b99ed
DV		 493 struct drm_framebuffer *fb;
494
495 mutex_lock(&dev->mode_config.fb_lock);
2b677e8c 496 fb = __drm_framebuffer_lookup(dev, id);
83f45fc3
DV		 497 if (fb) {
498 if (!kref_get_unless_zero(&fb->refcount))
499 fb = NULL;
500 }
786b99ed
DV		 501 mutex_unlock(&dev->mode_config.fb_lock);
502
503 return fb;
504}
505EXPORT_SYMBOL(drm_framebuffer_lookup);
506
f7eff60e
RC		 507/**
508 * drm_framebuffer_unreference - unref a framebuffer
065a50ed
DV		 509 * @fb: framebuffer to unref
510 *
511 * This functions decrements the fb's refcount and frees it if it drops to zero.
f7eff60e
RC		 512 */
513void drm_framebuffer_unreference(struct drm_framebuffer *fb)
514{
8291272a 515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 516 kref_put(&fb->refcount, drm_framebuffer_free);
517}
518EXPORT_SYMBOL(drm_framebuffer_unreference);
519
520/**
521 * drm_framebuffer_reference - incr the fb refcnt
065a50ed 522 * @fb: framebuffer
c8e32cc1
DV		 523 *
524 * This functions increments the fb's refcount.
f7eff60e
RC		 525 */
526void drm_framebuffer_reference(struct drm_framebuffer *fb)
527{
8291272a 528 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 529 kref_get(&fb->refcount);
530}
531EXPORT_SYMBOL(drm_framebuffer_reference);
532
2b677e8c
DV		 533static void drm_framebuffer_free_bug(struct kref *kref)
534{
535 BUG();
536}
537
6c2a7532
DV		 538static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
539{
8291272a 540 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
6c2a7532
DV		 541 kref_put(&fb->refcount, drm_framebuffer_free_bug);
542}
543
36206361
DV		 544/**
545 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
546 * @fb: fb to unregister
547 *
548 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
549 * those used for fbdev. Note that the caller must hold a reference of it's own,
550 * i.e. the object may not be destroyed through this call (since it'll lead to a
551 * locking inversion).
552 */
553void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
554{
2b677e8c
DV		 555 struct drm_device *dev = fb->dev;
556
557 mutex_lock(&dev->mode_config.fb_lock);
558 /* Mark fb as reaped and drop idr ref. */
559 __drm_framebuffer_unregister(dev, fb);
560 mutex_unlock(&dev->mode_config.fb_lock);
36206361
DV		 561}
562EXPORT_SYMBOL(drm_framebuffer_unregister_private);
563
f453ba04
DA		 564/**
565 * drm_framebuffer_cleanup - remove a framebuffer object
566 * @fb: framebuffer to remove
567 *
c8e32cc1
DV		 568 * Cleanup framebuffer. This function is intended to be used from the drivers
569 * ->destroy callback. It can also be used to clean up driver private
570 * framebuffers embedded into a larger structure.
36206361
DV		 571 *
572 * Note that this function does not remove the fb from active usuage - if it is
573 * still used anywhere, hilarity can ensue since userspace could call getfb on
574 * the id and get back -EINVAL. Obviously no concern at driver unload time.
575 *
576 * Also, the framebuffer will not be removed from the lookup idr - for
577 * user-created framebuffers this will happen in in the rmfb ioctl. For
578 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
579 * drm_framebuffer_unregister_private.
f453ba04
DA		 580 */
581void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
f7eff60e
RC		 582{
583 struct drm_device *dev = fb->dev;
8faf6b18 584
4b096ac1 585 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e
RC		 586 list_del(&fb->head);
587 dev->mode_config.num_fb--;
4b096ac1 588 mutex_unlock(&dev->mode_config.fb_lock);
f7eff60e
RC		 589}
590EXPORT_SYMBOL(drm_framebuffer_cleanup);
591
592/**
593 * drm_framebuffer_remove - remove and unreference a framebuffer object
594 * @fb: framebuffer to remove
595 *
f7eff60e 596 * Scans all the CRTCs and planes in @dev's mode_config. If they're
36206361 597 * using @fb, removes it, setting it to NULL. Then drops the reference to the
b62584e3
DV		 598 * passed-in framebuffer. Might take the modeset locks.
599 *
600 * Note that this function optimizes the cleanup away if the caller holds the
601 * last reference to the framebuffer. It is also guaranteed to not take the
602 * modeset locks in this case.
f7eff60e
RC		 603 */
604void drm_framebuffer_remove(struct drm_framebuffer *fb)
f453ba04
DA		 605{
606 struct drm_device *dev = fb->dev;
607 struct drm_crtc *crtc;
8cf5c917 608 struct drm_plane *plane;
5ef5f72f
DA		 609 struct drm_mode_set set;
610 int ret;
f453ba04 611
4b096ac1 612 WARN_ON(!list_empty(&fb->filp_head));
8faf6b18 613
b62584e3
DV		 614 /*
615 * drm ABI mandates that we remove any deleted framebuffers from active
616 * useage. But since most sane clients only remove framebuffers they no
617 * longer need, try to optimize this away.
618 *
619 * Since we're holding a reference ourselves, observing a refcount of 1
620 * means that we're the last holder and can skip it. Also, the refcount
621 * can never increase from 1 again, so we don't need any barriers or
622 * locks.
623 *
624 * Note that userspace could try to race with use and instate a new
625 * usage _after_ we've cleared all current ones. End result will be an
626 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
627 * in this manner.
628 */
629 if (atomic_read(&fb->refcount.refcount) > 1) {
630 drm_modeset_lock_all(dev);
631 /* remove from any CRTC */
632 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
f4510a27 633 if (crtc->primary->fb == fb) {
b62584e3
DV		 634 /* should turn off the crtc */
635 memset(&set, 0, sizeof(struct drm_mode_set));
636 set.crtc = crtc;
637 set.fb = NULL;
638 ret = drm_mode_set_config_internal(&set);
639 if (ret)
640 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
641 }
5ef5f72f 642 }
f453ba04 643
b62584e3 644 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
9125e618
VS		 645 if (plane->fb == fb)
646 drm_plane_force_disable(plane);
8cf5c917 647 }
b62584e3 648 drm_modeset_unlock_all(dev);
8cf5c917
JB		 649 }
650
f7eff60e 651 drm_framebuffer_unreference(fb);
f453ba04 652}
f7eff60e 653EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04 654
51fd371b
RC		 655DEFINE_WW_CLASS(crtc_ww_class);
656
f453ba04 657/**
e13161af
MR		 658 * drm_crtc_init_with_planes - Initialise a new CRTC object with
659 * specified primary and cursor planes.
f453ba04
DA		 660 * @dev: DRM device
661 * @crtc: CRTC object to init
e13161af
MR		 662 * @primary: Primary plane for CRTC
663 * @cursor: Cursor plane for CRTC
f453ba04
DA		 664 * @funcs: callbacks for the new CRTC
665 *
ad6f5c34 666 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 667 *
c8e32cc1 668 * Returns:
6bfc56aa 669 * Zero on success, error code on failure.
f453ba04 670 */
e13161af
MR		 671int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
672 struct drm_plane *primary,
fc1d3e44 673 struct drm_plane *cursor,
e13161af 674 const struct drm_crtc_funcs *funcs)
f453ba04 675{
51fd371b 676 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 677 int ret;
678
f453ba04
DA		 679 crtc->dev = dev;
680 crtc->funcs = funcs;
7c80e128 681 crtc->invert_dimensions = false;
f453ba04 682
51fd371b 683 drm_modeset_lock_init(&crtc->mutex);
6bfc56aa
VS		 684 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
685 if (ret)
686 goto out;
f453ba04 687
bffd9de0
PZ		 688 crtc->base.properties = &crtc->properties;
689
51fd371b
RC		 690 list_add_tail(&crtc->head, &config->crtc_list);
691 config->num_crtc++;
6bfc56aa 692
e13161af 693 crtc->primary = primary;
fc1d3e44 694 crtc->cursor = cursor;
e13161af
MR		 695 if (primary)
696 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
fc1d3e44
MR		 697 if (cursor)
698 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
e13161af 699
6bfc56aa 700 out:
6bfc56aa
VS		 701
702 return ret;
f453ba04 703}
e13161af 704EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 705
706/**
ad6f5c34 707 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 708 * @crtc: CRTC to cleanup
709 *
ad6f5c34
VS		 710 * This function cleans up @crtc and removes it from the DRM mode setting
711 * core. Note that the function does *not* free the crtc structure itself,
712 * this is the responsibility of the caller.
f453ba04
DA		 713 */
714void drm_crtc_cleanup(struct drm_crtc *crtc)
715{
716 struct drm_device *dev = crtc->dev;
717
9e1c156f
SK		 718 kfree(crtc->gamma_store);
719 crtc->gamma_store = NULL;
f453ba04 720
51fd371b
RC		 721 drm_modeset_lock_fini(&crtc->mutex);
722
f453ba04
DA		 723 drm_mode_object_put(dev, &crtc->base);
724 list_del(&crtc->head);
725 dev->mode_config.num_crtc--;
726}
727EXPORT_SYMBOL(drm_crtc_cleanup);
728
db5f7a6e
RK		 729/**
730 * drm_crtc_index - find the index of a registered CRTC
731 * @crtc: CRTC to find index for
732 *
733 * Given a registered CRTC, return the index of that CRTC within a DRM
734 * device's list of CRTCs.
735 */
736unsigned int drm_crtc_index(struct drm_crtc *crtc)
737{
738 unsigned int index = 0;
739 struct drm_crtc *tmp;
740
741 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
742 if (tmp == crtc)
743 return index;
744
745 index++;
746 }
747
748 BUG();
749}
750EXPORT_SYMBOL(drm_crtc_index);
751
86f422d5 752/*
f453ba04
DA		 753 * drm_mode_remove - remove and free a mode
754 * @connector: connector list to modify
755 * @mode: mode to remove
756 *
f453ba04
DA		 757 * Remove @mode from @connector's mode list, then free it.
758 */
86f422d5
LD		 759static void drm_mode_remove(struct drm_connector *connector,
760 struct drm_display_mode *mode)
f453ba04
DA		 761{
762 list_del(&mode->head);
554f1d78 763 drm_mode_destroy(connector->dev, mode);
f453ba04 764}
f453ba04 765
eaf99c74
CW		 766/**
767 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
768 * @connector: connector to quwery
eaf99c74
CW		 769 *
770 * The kernel supports per-connector configration of its consoles through
771 * use of the video= parameter. This function parses that option and
772 * extracts the user's specified mode (or enable/disable status) for a
773 * particular connector. This is typically only used during the early fbdev
774 * setup.
775 */
776static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
777{
778 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
779 char *option = NULL;
780
781 if (fb_get_options(connector->name, &option))
782 return;
783
784 if (!drm_mode_parse_command_line_for_connector(option,
785 connector,
786 mode))
787 return;
788
789 if (mode->force) {
790 const char *s;
791
792 switch (mode->force) {
793 case DRM_FORCE_OFF:
794 s = "OFF";
795 break;
796 case DRM_FORCE_ON_DIGITAL:
797 s = "ON - dig";
798 break;
799 default:
800 case DRM_FORCE_ON:
801 s = "ON";
802 break;
803 }
804
805 DRM_INFO("forcing %s connector %s\n", connector->name, s);
806 connector->force = mode->force;
807 }
808
809 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
810 connector->name,
811 mode->xres, mode->yres,
812 mode->refresh_specified ? mode->refresh : 60,
813 mode->rb ? " reduced blanking" : "",
814 mode->margins ? " with margins" : "",
815 mode->interlace ? " interlaced" : "");
816}
817
f453ba04
DA		 818/**
819 * drm_connector_init - Init a preallocated connector
820 * @dev: DRM device
821 * @connector: the connector to init
822 * @funcs: callbacks for this connector
065a50ed 823 * @connector_type: user visible type of the connector
f453ba04 824 *
f453ba04
DA		 825 * Initialises a preallocated connector. Connectors should be
826 * subclassed as part of driver connector objects.
6bfc56aa 827 *
c8e32cc1 828 * Returns:
6bfc56aa 829 * Zero on success, error code on failure.
f453ba04 830 */
6bfc56aa
VS		 831int drm_connector_init(struct drm_device *dev,
832 struct drm_connector *connector,
833 const struct drm_connector_funcs *funcs,
834 int connector_type)
f453ba04 835{
6bfc56aa 836 int ret;
b21e3afe
IM		 837 struct ida *connector_ida =
838 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 839
84849903 840 drm_modeset_lock_all(dev);
f453ba04 841
2ee39452 842 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
6bfc56aa 843 if (ret)
2abdd313 844 goto out_unlock;
6bfc56aa 845
7e3bdf4a 846 connector->base.properties = &connector->properties;
f453ba04
DA		 847 connector->dev = dev;
848 connector->funcs = funcs;
f453ba04
DA		 849 connector->connector_type = connector_type;
850 connector->connector_type_id =
b21e3afe
IM		 851 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
852 if (connector->connector_type_id < 0) {
853 ret = connector->connector_type_id;
2abdd313 854 goto out_put;
b21e3afe 855 }
2abdd313
JN		 856 connector->name =
857 kasprintf(GFP_KERNEL, "%s-%d",
858 drm_connector_enum_list[connector_type].name,
859 connector->connector_type_id);
860 if (!connector->name) {
861 ret = -ENOMEM;
862 goto out_put;
863 }
864
f453ba04
DA		 865 INIT_LIST_HEAD(&connector->probed_modes);
866 INIT_LIST_HEAD(&connector->modes);
867 connector->edid_blob_ptr = NULL;
5e2cb2f6 868 connector->status = connector_status_unknown;
f453ba04 869
eaf99c74
CW		 870 drm_connector_get_cmdline_mode(connector);
871
f453ba04
DA		 872 list_add_tail(&connector->head, &dev->mode_config.connector_list);
873 dev->mode_config.num_connector++;
874
a7331e5c 875 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 876 drm_object_attach_property(&connector->base,
a7331e5c
TH		 877 dev->mode_config.edid_property,
878 0);
f453ba04 879
58495563 880 drm_object_attach_property(&connector->base,
f453ba04
DA		 881 dev->mode_config.dpms_property, 0);
882
30f65707
TW		 883 connector->debugfs_entry = NULL;
884
2abdd313
JN		 885out_put:
886 if (ret)
887 drm_mode_object_put(dev, &connector->base);
888
889out_unlock:
84849903 890 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 891
892 return ret;
f453ba04
DA		 893}
894EXPORT_SYMBOL(drm_connector_init);
895
896/**
897 * drm_connector_cleanup - cleans up an initialised connector
898 * @connector: connector to cleanup
899 *
f453ba04
DA		 900 * Cleans up the connector but doesn't free the object.
901 */
902void drm_connector_cleanup(struct drm_connector *connector)
903{
904 struct drm_device *dev = connector->dev;
905 struct drm_display_mode *mode, *t;
906
907 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
908 drm_mode_remove(connector, mode);
909
910 list_for_each_entry_safe(mode, t, &connector->modes, head)
911 drm_mode_remove(connector, mode);
912
b21e3afe
IM		 913 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
914 connector->connector_type_id);
915
f453ba04 916 drm_mode_object_put(dev, &connector->base);
2abdd313
JN		 917 kfree(connector->name);
918 connector->name = NULL;
f453ba04 919 list_del(&connector->head);
6380c509 920 dev->mode_config.num_connector--;
f453ba04
DA		 921}
922EXPORT_SYMBOL(drm_connector_cleanup);
923
10f637bf
DV		 924/**
925 * drm_connector_index - find the index of a registered connector
926 * @connector: connector to find index for
927 *
928 * Given a registered connector, return the index of that connector within a DRM
929 * device's list of connectors.
930 */
931unsigned int drm_connector_index(struct drm_connector *connector)
932{
933 unsigned int index = 0;
934 struct drm_connector *tmp;
935
936 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
937 if (tmp == connector)
938 return index;
939
940 index++;
941 }
942
943 BUG();
944}
945EXPORT_SYMBOL(drm_connector_index);
946
34ea3d38
TW		 947/**
948 * drm_connector_register - register a connector
949 * @connector: the connector to register
950 *
951 * Register userspace interfaces for a connector
952 *
953 * Returns:
954 * Zero on success, error code on failure.
955 */
956int drm_connector_register(struct drm_connector *connector)
957{
30f65707
TW		 958 int ret;
959
2ee39452
DA		 960 drm_mode_object_register(connector->dev, &connector->base);
961
30f65707
TW		 962 ret = drm_sysfs_connector_add(connector);
963 if (ret)
964 return ret;
965
966 ret = drm_debugfs_connector_add(connector);
967 if (ret) {
968 drm_sysfs_connector_remove(connector);
969 return ret;
970 }
971
972 return 0;
34ea3d38
TW		 973}
974EXPORT_SYMBOL(drm_connector_register);
975
976/**
977 * drm_connector_unregister - unregister a connector
978 * @connector: the connector to unregister
979 *
980 * Unregister userspace interfaces for a connector
981 */
982void drm_connector_unregister(struct drm_connector *connector)
983{
984 drm_sysfs_connector_remove(connector);
30f65707 985 drm_debugfs_connector_remove(connector);
34ea3d38
TW		 986}
987EXPORT_SYMBOL(drm_connector_unregister);
988
989
c8e32cc1
DV		 990/**
991 * drm_connector_unplug_all - unregister connector userspace interfaces
992 * @dev: drm device
993 *
994 * This function unregisters all connector userspace interfaces in sysfs. Should
995 * be call when the device is disconnected, e.g. from an usb driver's
996 * ->disconnect callback.
997 */
cbc7e221
DA		 998void drm_connector_unplug_all(struct drm_device *dev)
999{
1000 struct drm_connector *connector;
1001
1002 /* taking the mode config mutex ends up in a clash with sysfs */
1003 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
34ea3d38 1004 drm_connector_unregister(connector);
cbc7e221
DA		 1005
1006}
1007EXPORT_SYMBOL(drm_connector_unplug_all);
1008
c8e32cc1
DV		 1009/**
1010 * drm_bridge_init - initialize a drm transcoder/bridge
1011 * @dev: drm device
1012 * @bridge: transcoder/bridge to set up
1013 * @funcs: bridge function table
1014 *
1015 * Initialises a preallocated bridge. Bridges should be
1016 * subclassed as part of driver connector objects.
1017 *
1018 * Returns:
1019 * Zero on success, error code on failure.
1020 */
3b336ec4
SP		 1021int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1022 const struct drm_bridge_funcs *funcs)
1023{
1024 int ret;
1025
1026 drm_modeset_lock_all(dev);
1027
1028 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1029 if (ret)
1030 goto out;
1031
1032 bridge->dev = dev;
1033 bridge->funcs = funcs;
1034
1035 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1036 dev->mode_config.num_bridge++;
1037
1038 out:
1039 drm_modeset_unlock_all(dev);
1040 return ret;
1041}
1042EXPORT_SYMBOL(drm_bridge_init);
1043
c8e32cc1
DV		 1044/**
1045 * drm_bridge_cleanup - cleans up an initialised bridge
1046 * @bridge: bridge to cleanup
1047 *
1048 * Cleans up the bridge but doesn't free the object.
1049 */
3b336ec4
SP		 1050void drm_bridge_cleanup(struct drm_bridge *bridge)
1051{
1052 struct drm_device *dev = bridge->dev;
1053
1054 drm_modeset_lock_all(dev);
1055 drm_mode_object_put(dev, &bridge->base);
1056 list_del(&bridge->head);
1057 dev->mode_config.num_bridge--;
1058 drm_modeset_unlock_all(dev);
1059}
1060EXPORT_SYMBOL(drm_bridge_cleanup);
1061
c8e32cc1
DV		 1062/**
1063 * drm_encoder_init - Init a preallocated encoder
1064 * @dev: drm device
1065 * @encoder: the encoder to init
1066 * @funcs: callbacks for this encoder
1067 * @encoder_type: user visible type of the encoder
1068 *
1069 * Initialises a preallocated encoder. Encoder should be
1070 * subclassed as part of driver encoder objects.
1071 *
1072 * Returns:
1073 * Zero on success, error code on failure.
1074 */
6bfc56aa 1075int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 1076 struct drm_encoder *encoder,
1077 const struct drm_encoder_funcs *funcs,
1078 int encoder_type)
f453ba04 1079{
6bfc56aa
VS		 1080 int ret;
1081
84849903 1082 drm_modeset_lock_all(dev);
f453ba04 1083
6bfc56aa
VS		 1084 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1085 if (ret)
e5748946 1086 goto out_unlock;
f453ba04 1087
6bfc56aa 1088 encoder->dev = dev;
f453ba04
DA		 1089 encoder->encoder_type = encoder_type;
1090 encoder->funcs = funcs;
e5748946
JN		 1091 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1092 drm_encoder_enum_list[encoder_type].name,
1093 encoder->base.id);
1094 if (!encoder->name) {
1095 ret = -ENOMEM;
1096 goto out_put;
1097 }
f453ba04
DA		 1098
1099 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1100 dev->mode_config.num_encoder++;
1101
e5748946
JN		 1102out_put:
1103 if (ret)
1104 drm_mode_object_put(dev, &encoder->base);
1105
1106out_unlock:
84849903 1107 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 1108
1109 return ret;
f453ba04
DA		 1110}
1111EXPORT_SYMBOL(drm_encoder_init);
1112
c8e32cc1
DV		 1113/**
1114 * drm_encoder_cleanup - cleans up an initialised encoder
1115 * @encoder: encoder to cleanup
1116 *
1117 * Cleans up the encoder but doesn't free the object.
1118 */
f453ba04
DA		 1119void drm_encoder_cleanup(struct drm_encoder *encoder)
1120{
1121 struct drm_device *dev = encoder->dev;
84849903 1122 drm_modeset_lock_all(dev);
f453ba04 1123 drm_mode_object_put(dev, &encoder->base);
e5748946
JN		 1124 kfree(encoder->name);
1125 encoder->name = NULL;
f453ba04 1126 list_del(&encoder->head);
6380c509 1127 dev->mode_config.num_encoder--;
84849903 1128 drm_modeset_unlock_all(dev);
f453ba04
DA		 1129}
1130EXPORT_SYMBOL(drm_encoder_cleanup);
1131
35f2c3ae 1132/**
dc415ff9 1133 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1134 * @dev: DRM device
1135 * @plane: plane object to init
1136 * @possible_crtcs: bitmask of possible CRTCs
1137 * @funcs: callbacks for the new plane
1138 * @formats: array of supported formats (%DRM_FORMAT_*)
1139 * @format_count: number of elements in @formats
dc415ff9 1140 * @type: type of plane (overlay, primary, cursor)
35f2c3ae 1141 *
dc415ff9 1142 * Initializes a plane object of type @type.
35f2c3ae 1143 *
c8e32cc1 1144 * Returns:
35f2c3ae
VS		 1145 * Zero on success, error code on failure.
1146 */
dc415ff9
MR		 1147int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1148 unsigned long possible_crtcs,
1149 const struct drm_plane_funcs *funcs,
1150 const uint32_t *formats, uint32_t format_count,
1151 enum drm_plane_type type)
8cf5c917 1152{
6bfc56aa
VS		 1153 int ret;
1154
84849903 1155 drm_modeset_lock_all(dev);
8cf5c917 1156
6bfc56aa
VS		 1157 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1158 if (ret)
1159 goto out;
1160
4d93914a 1161 plane->base.properties = &plane->properties;
8cf5c917 1162 plane->dev = dev;
8cf5c917
JB		 1163 plane->funcs = funcs;
1164 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1165 GFP_KERNEL);
1166 if (!plane->format_types) {
1167 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1168 drm_mode_object_put(dev, &plane->base);
6bfc56aa
VS		 1169 ret = -ENOMEM;
1170 goto out;
8cf5c917
JB		 1171 }
1172
308e5bcb 1173 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1174 plane->format_count = format_count;
1175 plane->possible_crtcs = possible_crtcs;
dc415ff9 1176 plane->type = type;
8cf5c917 1177
dc415ff9
MR		 1178 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1179 dev->mode_config.num_total_plane++;
1180 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1181 dev->mode_config.num_overlay_plane++;
8cf5c917 1182
9922ab5a
RC		 1183 drm_object_attach_property(&plane->base,
1184 dev->mode_config.plane_type_property,
1185 plane->type);
1186
6bfc56aa 1187 out:
84849903 1188 drm_modeset_unlock_all(dev);
8cf5c917 1189
6bfc56aa 1190 return ret;
8cf5c917 1191}
dc415ff9
MR		 1192EXPORT_SYMBOL(drm_universal_plane_init);
1193
1194/**
1195 * drm_plane_init - Initialize a legacy plane
1196 * @dev: DRM device
1197 * @plane: plane object to init
1198 * @possible_crtcs: bitmask of possible CRTCs
1199 * @funcs: callbacks for the new plane
1200 * @formats: array of supported formats (%DRM_FORMAT_*)
1201 * @format_count: number of elements in @formats
1202 * @is_primary: plane type (primary vs overlay)
1203 *
1204 * Legacy API to initialize a DRM plane.
1205 *
1206 * New drivers should call drm_universal_plane_init() instead.
1207 *
1208 * Returns:
1209 * Zero on success, error code on failure.
1210 */
1211int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1212 unsigned long possible_crtcs,
1213 const struct drm_plane_funcs *funcs,
1214 const uint32_t *formats, uint32_t format_count,
1215 bool is_primary)
1216{
1217 enum drm_plane_type type;
1218
1219 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1220 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1221 formats, format_count, type);
1222}
8cf5c917
JB		 1223EXPORT_SYMBOL(drm_plane_init);
1224
35f2c3ae
VS		 1225/**
1226 * drm_plane_cleanup - Clean up the core plane usage
1227 * @plane: plane to cleanup
1228 *
1229 * This function cleans up @plane and removes it from the DRM mode setting
1230 * core. Note that the function does *not* free the plane structure itself,
1231 * this is the responsibility of the caller.
1232 */
8cf5c917
JB		 1233void drm_plane_cleanup(struct drm_plane *plane)
1234{
1235 struct drm_device *dev = plane->dev;
1236
84849903 1237 drm_modeset_lock_all(dev);
8cf5c917
JB		 1238 kfree(plane->format_types);
1239 drm_mode_object_put(dev, &plane->base);
dc415ff9
MR		 1240
1241 BUG_ON(list_empty(&plane->head));
1242
1243 list_del(&plane->head);
1244 dev->mode_config.num_total_plane--;
1245 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1246 dev->mode_config.num_overlay_plane--;
84849903 1247 drm_modeset_unlock_all(dev);
8cf5c917
JB		 1248}
1249EXPORT_SYMBOL(drm_plane_cleanup);
1250
10f637bf
DV		 1251/**
1252 * drm_plane_index - find the index of a registered plane
1253 * @plane: plane to find index for
1254 *
1255 * Given a registered plane, return the index of that CRTC within a DRM
1256 * device's list of planes.
1257 */
1258unsigned int drm_plane_index(struct drm_plane *plane)
1259{
1260 unsigned int index = 0;
1261 struct drm_plane *tmp;
1262
1263 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1264 if (tmp == plane)
1265 return index;
1266
1267 index++;
1268 }
1269
1270 BUG();
1271}
1272EXPORT_SYMBOL(drm_plane_index);
1273
35f2c3ae
VS		 1274/**
1275 * drm_plane_force_disable - Forcibly disable a plane
1276 * @plane: plane to disable
1277 *
1278 * Forces the plane to be disabled.
1279 *
1280 * Used when the plane's current framebuffer is destroyed,
1281 * and when restoring fbdev mode.
1282 */
9125e618
VS		 1283void drm_plane_force_disable(struct drm_plane *plane)
1284{
1285 int ret;
1286
3d30a59b 1287 if (!plane->fb)
9125e618
VS		 1288 return;
1289
3d30a59b 1290 plane->old_fb = plane->fb;
9125e618 1291 ret = plane->funcs->disable_plane(plane);
731cce48 1292 if (ret) {
9125e618 1293 DRM_ERROR("failed to disable plane with busy fb\n");
3d30a59b 1294 plane->old_fb = NULL;
731cce48
DV		 1295 return;
1296 }
9125e618 1297 /* disconnect the plane from the fb and crtc: */
3d30a59b
DV		 1298 __drm_framebuffer_unreference(plane->old_fb);
1299 plane->old_fb = NULL;
9125e618
VS		 1300 plane->fb = NULL;
1301 plane->crtc = NULL;
1302}
1303EXPORT_SYMBOL(drm_plane_force_disable);
1304
f453ba04
DA		 1305static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1306{
1307 struct drm_property *edid;
1308 struct drm_property *dpms;
43aba7eb 1309 struct drm_property *dev_path;
f453ba04
DA		 1310
1311 /*
1312 * Standard properties (apply to all connectors)
1313 */
1314 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1315 DRM_MODE_PROP_IMMUTABLE,
1316 "EDID", 0);
1317 dev->mode_config.edid_property = edid;
1318
4a67d391
SH		 1319 dpms = drm_property_create_enum(dev, 0,
1320 "DPMS", drm_dpms_enum_list,
1321 ARRAY_SIZE(drm_dpms_enum_list));
f453ba04
DA		 1322 dev->mode_config.dpms_property = dpms;
1323
43aba7eb
DA		 1324 dev_path = drm_property_create(dev,
1325 DRM_MODE_PROP_BLOB |
1326 DRM_MODE_PROP_IMMUTABLE,
1327 "PATH", 0);
1328 dev->mode_config.path_property = dev_path;
1329
f453ba04
DA		 1330 return 0;
1331}
1332
9922ab5a
RC		 1333static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1334{
1335 struct drm_property *type;
1336
1337 /*
1338 * Standard properties (apply to all planes)
1339 */
1340 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1341 "type", drm_plane_type_enum_list,
1342 ARRAY_SIZE(drm_plane_type_enum_list));
1343 dev->mode_config.plane_type_property = type;
1344
1345 return 0;
1346}
1347
f453ba04
DA		 1348/**
1349 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1350 * @dev: DRM device
1351 *
1352 * Called by a driver the first time a DVI-I connector is made.
1353 */
1354int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1355{
1356 struct drm_property *dvi_i_selector;
1357 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1358
1359 if (dev->mode_config.dvi_i_select_subconnector_property)
1360 return 0;
1361
1362 dvi_i_selector =
4a67d391 1363 drm_property_create_enum(dev, 0,
f453ba04 1364 "select subconnector",
4a67d391 1365 drm_dvi_i_select_enum_list,
f453ba04 1366 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1367 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1368
4a67d391 1369 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1370 "subconnector",
4a67d391 1371 drm_dvi_i_subconnector_enum_list,
f453ba04 1372 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1373 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1374
1375 return 0;
1376}
1377EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1378
1379/**
1380 * drm_create_tv_properties - create TV specific connector properties
1381 * @dev: DRM device
1382 * @num_modes: number of different TV formats (modes) supported
1383 * @modes: array of pointers to strings containing name of each format
1384 *
1385 * Called by a driver's TV initialization routine, this function creates
1386 * the TV specific connector properties for a given device. Caller is
1387 * responsible for allocating a list of format names and passing them to
1388 * this routine.
1389 */
1390int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1391 char *modes[])
1392{
1393 struct drm_property *tv_selector;
1394 struct drm_property *tv_subconnector;
1395 int i;
1396
1397 if (dev->mode_config.tv_select_subconnector_property)
1398 return 0;
1399
1400 /*
1401 * Basic connector properties
1402 */
4a67d391 1403 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1404 "select subconnector",
4a67d391 1405 drm_tv_select_enum_list,
f453ba04 1406 ARRAY_SIZE(drm_tv_select_enum_list));
f453ba04
DA		 1407 dev->mode_config.tv_select_subconnector_property = tv_selector;
1408
1409 tv_subconnector =
4a67d391
SH		 1410 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1411 "subconnector",
1412 drm_tv_subconnector_enum_list,
f453ba04 1413 ARRAY_SIZE(drm_tv_subconnector_enum_list));
f453ba04
DA		 1414 dev->mode_config.tv_subconnector_property = tv_subconnector;
1415
1416 /*
1417 * Other, TV specific properties: margins & TV modes.
1418 */
1419 dev->mode_config.tv_left_margin_property =
d9bc3c02 1420 drm_property_create_range(dev, 0, "left margin", 0, 100);
f453ba04
DA		 1421
1422 dev->mode_config.tv_right_margin_property =
d9bc3c02 1423 drm_property_create_range(dev, 0, "right margin", 0, 100);
f453ba04
DA		 1424
1425 dev->mode_config.tv_top_margin_property =
d9bc3c02 1426 drm_property_create_range(dev, 0, "top margin", 0, 100);
f453ba04
DA		 1427
1428 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1429 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
f453ba04
DA		 1430
1431 dev->mode_config.tv_mode_property =
1432 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1433 "mode", num_modes);
1434 for (i = 0; i < num_modes; i++)
1435 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1436 i, modes[i]);
1437
b6b7902e 1438 dev->mode_config.tv_brightness_property =
d9bc3c02 1439 drm_property_create_range(dev, 0, "brightness", 0, 100);
b6b7902e
FJ		 1440
1441 dev->mode_config.tv_contrast_property =
d9bc3c02 1442 drm_property_create_range(dev, 0, "contrast", 0, 100);
b6b7902e
FJ		 1443
1444 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1445 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
b6b7902e 1446
a75f0236 1447 dev->mode_config.tv_overscan_property =
d9bc3c02 1448 drm_property_create_range(dev, 0, "overscan", 0, 100);
a75f0236
FJ		 1449
1450 dev->mode_config.tv_saturation_property =
d9bc3c02 1451 drm_property_create_range(dev, 0, "saturation", 0, 100);
a75f0236
FJ		 1452
1453 dev->mode_config.tv_hue_property =
d9bc3c02 1454 drm_property_create_range(dev, 0, "hue", 0, 100);
a75f0236 1455
f453ba04
DA		 1456 return 0;
1457}
1458EXPORT_SYMBOL(drm_mode_create_tv_properties);
1459
1460/**
1461 * drm_mode_create_scaling_mode_property - create scaling mode property
1462 * @dev: DRM device
1463 *
1464 * Called by a driver the first time it's needed, must be attached to desired
1465 * connectors.
1466 */
1467int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1468{
1469 struct drm_property *scaling_mode;
f453ba04
DA		 1470
1471 if (dev->mode_config.scaling_mode_property)
1472 return 0;
1473
1474 scaling_mode =
4a67d391
SH		 1475 drm_property_create_enum(dev, 0, "scaling mode",
1476 drm_scaling_mode_enum_list,
f453ba04 1477 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1478
1479 dev->mode_config.scaling_mode_property = scaling_mode;
1480
1481 return 0;
1482}
1483EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1484
ff587e45
VK		 1485/**
1486 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1487 * @dev: DRM device
1488 *
1489 * Called by a driver the first time it's needed, must be attached to desired
1490 * connectors.
1491 *
1492 * Returns:
1493 * Zero on success, errno on failure.
1494 */
1495int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1496{
1497 if (dev->mode_config.aspect_ratio_property)
1498 return 0;
1499
1500 dev->mode_config.aspect_ratio_property =
1501 drm_property_create_enum(dev, 0, "aspect ratio",
1502 drm_aspect_ratio_enum_list,
1503 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1504
1505 if (dev->mode_config.aspect_ratio_property == NULL)
1506 return -ENOMEM;
1507
1508 return 0;
1509}
1510EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1511
884840aa
JB		 1512/**
1513 * drm_mode_create_dirty_property - create dirty property
1514 * @dev: DRM device
1515 *
1516 * Called by a driver the first time it's needed, must be attached to desired
1517 * connectors.
1518 */
1519int drm_mode_create_dirty_info_property(struct drm_device *dev)
1520{
1521 struct drm_property *dirty_info;
884840aa
JB		 1522
1523 if (dev->mode_config.dirty_info_property)
1524 return 0;
1525
1526 dirty_info =
4a67d391 1527 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1528 "dirty",
4a67d391 1529 drm_dirty_info_enum_list,
884840aa 1530 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1531 dev->mode_config.dirty_info_property = dirty_info;
1532
1533 return 0;
1534}
1535EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1536
ea9cbb06 1537static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
f453ba04
DA		 1538{
1539 uint32_t total_objects = 0;
1540
1541 total_objects += dev->mode_config.num_crtc;
1542 total_objects += dev->mode_config.num_connector;
1543 total_objects += dev->mode_config.num_encoder;
3b336ec4 1544 total_objects += dev->mode_config.num_bridge;
f453ba04 1545
f453ba04
DA		 1546 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1547 if (!group->id_list)
1548 return -ENOMEM;
1549
1550 group->num_crtcs = 0;
1551 group->num_connectors = 0;
1552 group->num_encoders = 0;
3b336ec4 1553 group->num_bridges = 0;
f453ba04
DA		 1554 return 0;
1555}
1556
ad222799
DA		 1557void drm_mode_group_destroy(struct drm_mode_group *group)
1558{
1559 kfree(group->id_list);
1560 group->id_list = NULL;
1561}
1562
c8e32cc1
DV		 1563/*
1564 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1565 * the drm core's responsibility to set up mode control groups.
1566 */
f453ba04
DA		 1567int drm_mode_group_init_legacy_group(struct drm_device *dev,
1568 struct drm_mode_group *group)
1569{
1570 struct drm_crtc *crtc;
1571 struct drm_encoder *encoder;
1572 struct drm_connector *connector;
3b336ec4 1573 struct drm_bridge *bridge;
f453ba04
DA		 1574 int ret;
1575
1576 if ((ret = drm_mode_group_init(dev, group)))
1577 return ret;
1578
1579 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1580 group->id_list[group->num_crtcs++] = crtc->base.id;
1581
1582 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1583 group->id_list[group->num_crtcs + group->num_encoders++] =
1584 encoder->base.id;
1585
1586 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1587 group->id_list[group->num_crtcs + group->num_encoders +
1588 group->num_connectors++] = connector->base.id;
1589
3b336ec4
SP		 1590 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1591 group->id_list[group->num_crtcs + group->num_encoders +
1592 group->num_connectors + group->num_bridges++] =
1593 bridge->base.id;
1594
f453ba04
DA		 1595 return 0;
1596}
9c1dfc55 1597EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
f453ba04 1598
2390cd11
DA		 1599void drm_reinit_primary_mode_group(struct drm_device *dev)
1600{
1601 drm_modeset_lock_all(dev);
1602 drm_mode_group_destroy(&dev->primary->mode_group);
1603 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1604 drm_modeset_unlock_all(dev);
1605}
1606EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1607
f453ba04
DA		 1608/**
1609 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1610 * @out: drm_mode_modeinfo struct to return to the user
1611 * @in: drm_display_mode to use
1612 *
f453ba04
DA		 1613 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1614 * the user.
1615 */
93bbf6db
VS		 1616static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1617 const struct drm_display_mode *in)
f453ba04 1618{
e36fae38
VS		 1619 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1620 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1621 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1622 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1623 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1624 "timing values too large for mode info\n");
1625
f453ba04
DA		 1626 out->clock = in->clock;
1627 out->hdisplay = in->hdisplay;
1628 out->hsync_start = in->hsync_start;
1629 out->hsync_end = in->hsync_end;
1630 out->htotal = in->htotal;
1631 out->hskew = in->hskew;
1632 out->vdisplay = in->vdisplay;
1633 out->vsync_start = in->vsync_start;
1634 out->vsync_end = in->vsync_end;
1635 out->vtotal = in->vtotal;
1636 out->vscan = in->vscan;
1637 out->vrefresh = in->vrefresh;
1638 out->flags = in->flags;
1639 out->type = in->type;
1640 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1641 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1642}
1643
1644/**
74afee7d 1645 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
f453ba04
DA		 1646 * @out: drm_display_mode to return to the user
1647 * @in: drm_mode_modeinfo to use
1648 *
f453ba04
DA		 1649 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1650 * the caller.
90367bf6 1651 *
c8e32cc1 1652 * Returns:
90367bf6 1653 * Zero on success, errno on failure.
f453ba04 1654 */
93bbf6db
VS		 1655static int drm_crtc_convert_umode(struct drm_display_mode *out,
1656 const struct drm_mode_modeinfo *in)
f453ba04 1657{
90367bf6
VS		 1658 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1659 return -ERANGE;
1660
5848ad40
DL		 1661 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1662 return -EINVAL;
1663
f453ba04
DA		 1664 out->clock = in->clock;
1665 out->hdisplay = in->hdisplay;
1666 out->hsync_start = in->hsync_start;
1667 out->hsync_end = in->hsync_end;
1668 out->htotal = in->htotal;
1669 out->hskew = in->hskew;
1670 out->vdisplay = in->vdisplay;
1671 out->vsync_start = in->vsync_start;
1672 out->vsync_end = in->vsync_end;
1673 out->vtotal = in->vtotal;
1674 out->vscan = in->vscan;
1675 out->vrefresh = in->vrefresh;
1676 out->flags = in->flags;
1677 out->type = in->type;
1678 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1679 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
90367bf6
VS		 1680
1681 return 0;
f453ba04
DA		 1682}
1683
1684/**
1685 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1686 * @dev: drm device for the ioctl
1687 * @data: data pointer for the ioctl
1688 * @file_priv: drm file for the ioctl call
f453ba04 1689 *
f453ba04
DA		 1690 * Construct a set of configuration description structures and return
1691 * them to the user, including CRTC, connector and framebuffer configuration.
1692 *
1693 * Called by the user via ioctl.
1694 *
c8e32cc1 1695 * Returns:
f453ba04
DA		 1696 * Zero on success, errno on failure.
1697 */
1698int drm_mode_getresources(struct drm_device *dev, void *data,
1699 struct drm_file *file_priv)
1700{
1701 struct drm_mode_card_res *card_res = data;
1702 struct list_head *lh;
1703 struct drm_framebuffer *fb;
1704 struct drm_connector *connector;
1705 struct drm_crtc *crtc;
1706 struct drm_encoder *encoder;
1707 int ret = 0;
1708 int connector_count = 0;
1709 int crtc_count = 0;
1710 int fb_count = 0;
1711 int encoder_count = 0;
1712 int copied = 0, i;
1713 uint32_t __user *fb_id;
1714 uint32_t __user *crtc_id;
1715 uint32_t __user *connector_id;
1716 uint32_t __user *encoder_id;
1717 struct drm_mode_group *mode_group;
1718
fb3b06c8
DA		 1719 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1720 return -EINVAL;
1721
f453ba04 1722
4b096ac1 1723 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1724 /*
1725 * For the non-control nodes we need to limit the list of resources
1726 * by IDs in the group list for this node
1727 */
1728 list_for_each(lh, &file_priv->fbs)
1729 fb_count++;
1730
4b096ac1
DV		 1731 /* handle this in 4 parts */
1732 /* FBs */
1733 if (card_res->count_fbs >= fb_count) {
1734 copied = 0;
1735 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1736 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1737 if (put_user(fb->base.id, fb_id + copied)) {
1738 mutex_unlock(&file_priv->fbs_lock);
1739 return -EFAULT;
1740 }
1741 copied++;
1742 }
1743 }
1744 card_res->count_fbs = fb_count;
1745 mutex_unlock(&file_priv->fbs_lock);
1746
1747 drm_modeset_lock_all(dev);
43683057 1748 if (!drm_is_primary_client(file_priv)) {
f453ba04 1749
09f308f7 1750 mode_group = NULL;
f453ba04
DA		 1751 list_for_each(lh, &dev->mode_config.crtc_list)
1752 crtc_count++;
1753
1754 list_for_each(lh, &dev->mode_config.connector_list)
1755 connector_count++;
1756
1757 list_for_each(lh, &dev->mode_config.encoder_list)
1758 encoder_count++;
1759 } else {
1760
09f308f7 1761 mode_group = &file_priv->master->minor->mode_group;
f453ba04
DA		 1762 crtc_count = mode_group->num_crtcs;
1763 connector_count = mode_group->num_connectors;
1764 encoder_count = mode_group->num_encoders;
1765 }
1766
1767 card_res->max_height = dev->mode_config.max_height;
1768 card_res->min_height = dev->mode_config.min_height;
1769 card_res->max_width = dev->mode_config.max_width;
1770 card_res->min_width = dev->mode_config.min_width;
1771
f453ba04
DA		 1772 /* CRTCs */
1773 if (card_res->count_crtcs >= crtc_count) {
1774 copied = 0;
1775 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
09f308f7 1776 if (!mode_group) {
f453ba04
DA		 1777 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1778 head) {
9440106b 1779 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1780 if (put_user(crtc->base.id, crtc_id + copied)) {
1781 ret = -EFAULT;
1782 goto out;
1783 }
1784 copied++;
1785 }
1786 } else {
1787 for (i = 0; i < mode_group->num_crtcs; i++) {
1788 if (put_user(mode_group->id_list[i],
1789 crtc_id + copied)) {
1790 ret = -EFAULT;
1791 goto out;
1792 }
1793 copied++;
1794 }
1795 }
1796 }
1797 card_res->count_crtcs = crtc_count;
1798
1799 /* Encoders */
1800 if (card_res->count_encoders >= encoder_count) {
1801 copied = 0;
1802 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
09f308f7 1803 if (!mode_group) {
f453ba04
DA		 1804 list_for_each_entry(encoder,
1805 &dev->mode_config.encoder_list,
1806 head) {
9440106b 1807 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
83a8cfd3 1808 encoder->name);
f453ba04
DA		 1809 if (put_user(encoder->base.id, encoder_id +
1810 copied)) {
1811 ret = -EFAULT;
1812 goto out;
1813 }
1814 copied++;
1815 }
1816 } else {
1817 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1818 if (put_user(mode_group->id_list[i],
1819 encoder_id + copied)) {
1820 ret = -EFAULT;
1821 goto out;
1822 }
1823 copied++;
1824 }
1825
1826 }
1827 }
1828 card_res->count_encoders = encoder_count;
1829
1830 /* Connectors */
1831 if (card_res->count_connectors >= connector_count) {
1832 copied = 0;
1833 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
09f308f7 1834 if (!mode_group) {
f453ba04
DA		 1835 list_for_each_entry(connector,
1836 &dev->mode_config.connector_list,
1837 head) {
9440106b
JG		 1838 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1839 connector->base.id,
25933820 1840 connector->name);
f453ba04
DA		 1841 if (put_user(connector->base.id,
1842 connector_id + copied)) {
1843 ret = -EFAULT;
1844 goto out;
1845 }
1846 copied++;
1847 }
1848 } else {
1849 int start = mode_group->num_crtcs +
1850 mode_group->num_encoders;
1851 for (i = start; i < start + mode_group->num_connectors; i++) {
1852 if (put_user(mode_group->id_list[i],
1853 connector_id + copied)) {
1854 ret = -EFAULT;
1855 goto out;
1856 }
1857 copied++;
1858 }
1859 }
1860 }
1861 card_res->count_connectors = connector_count;
1862
9440106b 1863 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1864 card_res->count_connectors, card_res->count_encoders);
1865
1866out:
84849903 1867 drm_modeset_unlock_all(dev);
f453ba04
DA		 1868 return ret;
1869}
1870
1871/**
1872 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1873 * @dev: drm device for the ioctl
1874 * @data: data pointer for the ioctl
1875 * @file_priv: drm file for the ioctl call
f453ba04 1876 *
f453ba04
DA		 1877 * Construct a CRTC configuration structure to return to the user.
1878 *
1879 * Called by the user via ioctl.
1880 *
c8e32cc1 1881 * Returns:
f453ba04
DA		 1882 * Zero on success, errno on failure.
1883 */
1884int drm_mode_getcrtc(struct drm_device *dev,
1885 void *data, struct drm_file *file_priv)
1886{
1887 struct drm_mode_crtc *crtc_resp = data;
1888 struct drm_crtc *crtc;
f453ba04
DA		 1889 int ret = 0;
1890
fb3b06c8
DA		 1891 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1892 return -EINVAL;
1893
84849903 1894 drm_modeset_lock_all(dev);
f453ba04 1895
a2b34e22
RC		 1896 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1897 if (!crtc) {
f27657f2 1898 ret = -ENOENT;
f453ba04
DA		 1899 goto out;
1900 }
f453ba04
DA		 1901
1902 crtc_resp->x = crtc->x;
1903 crtc_resp->y = crtc->y;
1904 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 1905 if (crtc->primary->fb)
1906 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 1907 else
1908 crtc_resp->fb_id = 0;
1909
1910 if (crtc->enabled) {
1911
1912 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1913 crtc_resp->mode_valid = 1;
1914
1915 } else {
1916 crtc_resp->mode_valid = 0;
1917 }
1918
1919out:
84849903 1920 drm_modeset_unlock_all(dev);
f453ba04
DA		 1921 return ret;
1922}
1923
61d8e328
DL		 1924static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1925 const struct drm_file *file_priv)
1926{
1927 /*
1928 * If user-space hasn't configured the driver to expose the stereo 3D
1929 * modes, don't expose them.
1930 */
1931 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1932 return false;
1933
1934 return true;
1935}
1936
f453ba04
DA		 1937/**
1938 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 1939 * @dev: drm device for the ioctl
1940 * @data: data pointer for the ioctl
1941 * @file_priv: drm file for the ioctl call
f453ba04 1942 *
f453ba04
DA		 1943 * Construct a connector configuration structure to return to the user.
1944 *
1945 * Called by the user via ioctl.
1946 *
c8e32cc1 1947 * Returns:
f453ba04
DA		 1948 * Zero on success, errno on failure.
1949 */
1950int drm_mode_getconnector(struct drm_device *dev, void *data,
1951 struct drm_file *file_priv)
1952{
1953 struct drm_mode_get_connector *out_resp = data;
f453ba04
DA		 1954 struct drm_connector *connector;
1955 struct drm_display_mode *mode;
1956 int mode_count = 0;
1957 int props_count = 0;
1958 int encoders_count = 0;
1959 int ret = 0;
1960 int copied = 0;
1961 int i;
1962 struct drm_mode_modeinfo u_mode;
1963 struct drm_mode_modeinfo __user *mode_ptr;
1964 uint32_t __user *prop_ptr;
1965 uint64_t __user *prop_values;
1966 uint32_t __user *encoder_ptr;
1967
fb3b06c8
DA		 1968 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1969 return -EINVAL;
1970
f453ba04
DA		 1971 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1972
9440106b 1973 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 1974
7b24056b 1975 mutex_lock(&dev->mode_config.mutex);
f453ba04 1976
a2b34e22
RC		 1977 connector = drm_connector_find(dev, out_resp->connector_id);
1978 if (!connector) {
f27657f2 1979 ret = -ENOENT;
f453ba04
DA		 1980 goto out;
1981 }
f453ba04 1982
7f88a9be 1983 props_count = connector->properties.count;
f453ba04
DA		 1984
1985 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1986 if (connector->encoder_ids[i] != 0) {
1987 encoders_count++;
1988 }
1989 }
1990
1991 if (out_resp->count_modes == 0) {
1992 connector->funcs->fill_modes(connector,
1993 dev->mode_config.max_width,
1994 dev->mode_config.max_height);
1995 }
1996
1997 /* delayed so we get modes regardless of pre-fill_modes state */
1998 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 1999 if (drm_mode_expose_to_userspace(mode, file_priv))
2000 mode_count++;
f453ba04
DA		 2001
2002 out_resp->connector_id = connector->base.id;
2003 out_resp->connector_type = connector->connector_type;
2004 out_resp->connector_type_id = connector->connector_type_id;
2005 out_resp->mm_width = connector->display_info.width_mm;
2006 out_resp->mm_height = connector->display_info.height_mm;
2007 out_resp->subpixel = connector->display_info.subpixel_order;
2008 out_resp->connection = connector->status;
832fd395 2009 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
f453ba04
DA		 2010 if (connector->encoder)
2011 out_resp->encoder_id = connector->encoder->base.id;
2012 else
2013 out_resp->encoder_id = 0;
832fd395 2014 drm_modeset_unlock(&dev->mode_config.connection_mutex);
f453ba04
DA		 2015
2016 /*
2017 * This ioctl is called twice, once to determine how much space is
2018 * needed, and the 2nd time to fill it.
2019 */
2020 if ((out_resp->count_modes >= mode_count) && mode_count) {
2021 copied = 0;
81f6c7f8 2022 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 2023 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 2024 if (!drm_mode_expose_to_userspace(mode, file_priv))
2025 continue;
2026
f453ba04
DA		 2027 drm_crtc_convert_to_umode(&u_mode, mode);
2028 if (copy_to_user(mode_ptr + copied,
2029 &u_mode, sizeof(u_mode))) {
2030 ret = -EFAULT;
2031 goto out;
2032 }
2033 copied++;
2034 }
2035 }
2036 out_resp->count_modes = mode_count;
2037
2038 if ((out_resp->count_props >= props_count) && props_count) {
2039 copied = 0;
81f6c7f8
VS		 2040 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2041 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
7f88a9be
PZ		 2042 for (i = 0; i < connector->properties.count; i++) {
2043 if (put_user(connector->properties.ids[i],
2044 prop_ptr + copied)) {
2045 ret = -EFAULT;
2046 goto out;
2047 }
f453ba04 2048
7f88a9be
PZ		 2049 if (put_user(connector->properties.values[i],
2050 prop_values + copied)) {
2051 ret = -EFAULT;
2052 goto out;
f453ba04 2053 }
7f88a9be 2054 copied++;
f453ba04
DA		 2055 }
2056 }
2057 out_resp->count_props = props_count;
2058
2059 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2060 copied = 0;
81f6c7f8 2061 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 2062 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2063 if (connector->encoder_ids[i] != 0) {
2064 if (put_user(connector->encoder_ids[i],
2065 encoder_ptr + copied)) {
2066 ret = -EFAULT;
2067 goto out;
2068 }
2069 copied++;
2070 }
2071 }
2072 }
2073 out_resp->count_encoders = encoders_count;
2074
2075out:
7b24056b
DV		 2076 mutex_unlock(&dev->mode_config.mutex);
2077
f453ba04
DA		 2078 return ret;
2079}
2080
c8e32cc1
DV		 2081/**
2082 * drm_mode_getencoder - get encoder configuration
2083 * @dev: drm device for the ioctl
2084 * @data: data pointer for the ioctl
2085 * @file_priv: drm file for the ioctl call
2086 *
2087 * Construct a encoder configuration structure to return to the user.
2088 *
2089 * Called by the user via ioctl.
2090 *
2091 * Returns:
2092 * Zero on success, errno on failure.
2093 */
f453ba04
DA		 2094int drm_mode_getencoder(struct drm_device *dev, void *data,
2095 struct drm_file *file_priv)
2096{
2097 struct drm_mode_get_encoder *enc_resp = data;
f453ba04
DA		 2098 struct drm_encoder *encoder;
2099 int ret = 0;
2100
fb3b06c8
DA		 2101 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2102 return -EINVAL;
2103
84849903 2104 drm_modeset_lock_all(dev);
a2b34e22
RC		 2105 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2106 if (!encoder) {
f27657f2 2107 ret = -ENOENT;
f453ba04
DA		 2108 goto out;
2109 }
f453ba04
DA		 2110
2111 if (encoder->crtc)
2112 enc_resp->crtc_id = encoder->crtc->base.id;
2113 else
2114 enc_resp->crtc_id = 0;
2115 enc_resp->encoder_type = encoder->encoder_type;
2116 enc_resp->encoder_id = encoder->base.id;
2117 enc_resp->possible_crtcs = encoder->possible_crtcs;
2118 enc_resp->possible_clones = encoder->possible_clones;
2119
2120out:
84849903 2121 drm_modeset_unlock_all(dev);
f453ba04
DA		 2122 return ret;
2123}
2124
8cf5c917 2125/**
c8e32cc1 2126 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 2127 * @dev: DRM device
2128 * @data: ioctl data
2129 * @file_priv: DRM file info
2130 *
c8e32cc1
DV		 2131 * Construct a list of plane ids to return to the user.
2132 *
2133 * Called by the user via ioctl.
2134 *
2135 * Returns:
2136 * Zero on success, errno on failure.
8cf5c917
JB		 2137 */
2138int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 2139 struct drm_file *file_priv)
8cf5c917
JB		 2140{
2141 struct drm_mode_get_plane_res *plane_resp = data;
2142 struct drm_mode_config *config;
2143 struct drm_plane *plane;
2144 uint32_t __user *plane_ptr;
2145 int copied = 0, ret = 0;
681e7ec7 2146 unsigned num_planes;
8cf5c917
JB		 2147
2148 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2149 return -EINVAL;
2150
84849903 2151 drm_modeset_lock_all(dev);
8cf5c917
JB		 2152 config = &dev->mode_config;
2153
681e7ec7
MR		 2154 if (file_priv->universal_planes)
2155 num_planes = config->num_total_plane;
2156 else
2157 num_planes = config->num_overlay_plane;
2158
8cf5c917
JB		 2159 /*
2160 * This ioctl is called twice, once to determine how much space is
2161 * needed, and the 2nd time to fill it.
2162 */
681e7ec7
MR		 2163 if (num_planes &&
2164 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 2165 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917
JB		 2166
2167 list_for_each_entry(plane, &config->plane_list, head) {
681e7ec7
MR		 2168 /*
2169 * Unless userspace set the 'universal planes'
2170 * capability bit, only advertise overlays.
2171 */
2172 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2173 !file_priv->universal_planes)
e27dde3e
MR		 2174 continue;
2175
8cf5c917
JB		 2176 if (put_user(plane->base.id, plane_ptr + copied)) {
2177 ret = -EFAULT;
2178 goto out;
2179 }
2180 copied++;
2181 }
2182 }
681e7ec7 2183 plane_resp->count_planes = num_planes;
8cf5c917
JB		 2184
2185out:
84849903 2186 drm_modeset_unlock_all(dev);
8cf5c917
JB		 2187 return ret;
2188}
2189
2190/**
c8e32cc1 2191 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2192 * @dev: DRM device
2193 * @data: ioctl data
2194 * @file_priv: DRM file info
2195 *
c8e32cc1
DV		 2196 * Construct a plane configuration structure to return to the user.
2197 *
2198 * Called by the user via ioctl.
2199 *
2200 * Returns:
2201 * Zero on success, errno on failure.
8cf5c917
JB		 2202 */
2203int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2204 struct drm_file *file_priv)
8cf5c917
JB		 2205{
2206 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2207 struct drm_plane *plane;
2208 uint32_t __user *format_ptr;
2209 int ret = 0;
2210
2211 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2212 return -EINVAL;
2213
84849903 2214 drm_modeset_lock_all(dev);
a2b34e22
RC		 2215 plane = drm_plane_find(dev, plane_resp->plane_id);
2216 if (!plane) {
8cf5c917
JB		 2217 ret = -ENOENT;
2218 goto out;
2219 }
8cf5c917
JB		 2220
2221 if (plane->crtc)
2222 plane_resp->crtc_id = plane->crtc->base.id;
2223 else
2224 plane_resp->crtc_id = 0;
2225
2226 if (plane->fb)
2227 plane_resp->fb_id = plane->fb->base.id;
2228 else
2229 plane_resp->fb_id = 0;
2230
2231 plane_resp->plane_id = plane->base.id;
2232 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2233 plane_resp->gamma_size = 0;
8cf5c917
JB		 2234
2235 /*
2236 * This ioctl is called twice, once to determine how much space is
2237 * needed, and the 2nd time to fill it.
2238 */
2239 if (plane->format_count &&
2240 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2241 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2242 if (copy_to_user(format_ptr,
2243 plane->format_types,
2244 sizeof(uint32_t) * plane->format_count)) {
2245 ret = -EFAULT;
2246 goto out;
2247 }
2248 }
2249 plane_resp->count_format_types = plane->format_count;
2250
2251out:
84849903 2252 drm_modeset_unlock_all(dev);
8cf5c917
JB		 2253 return ret;
2254}
2255
b36552b3
MR		 2256/*
2257 * setplane_internal - setplane handler for internal callers
8cf5c917 2258 *
b36552b3
MR		 2259 * Note that we assume an extra reference has already been taken on fb. If the
2260 * update fails, this reference will be dropped before return; if it succeeds,
2261 * the previous framebuffer (if any) will be unreferenced instead.
c8e32cc1 2262 *
b36552b3 2263 * src_{x,y,w,h} are provided in 16.16 fixed point format
8cf5c917 2264 */
f2b50c11
DV		 2265static int __setplane_internal(struct drm_plane *plane,
2266 struct drm_crtc *crtc,
2267 struct drm_framebuffer *fb,
2268 int32_t crtc_x, int32_t crtc_y,
2269 uint32_t crtc_w, uint32_t crtc_h,
2270 /* src_{x,y,w,h} values are 16.16 fixed point */
2271 uint32_t src_x, uint32_t src_y,
2272 uint32_t src_w, uint32_t src_h)
8cf5c917 2273{
8cf5c917 2274 int ret = 0;
42ef8789 2275 unsigned int fb_width, fb_height;
62443be6 2276 int i;
8cf5c917 2277
8cf5c917 2278 /* No fb means shut it down */
b36552b3 2279 if (!fb) {
3d30a59b 2280 plane->old_fb = plane->fb;
731cce48
DV		 2281 ret = plane->funcs->disable_plane(plane);
2282 if (!ret) {
2283 plane->crtc = NULL;
2284 plane->fb = NULL;
2285 } else {
3d30a59b 2286 plane->old_fb = NULL;
731cce48 2287 }
8cf5c917
JB		 2288 goto out;
2289 }
2290
7f994f3f
MR		 2291 /* Check whether this plane is usable on this CRTC */
2292 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2293 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2294 ret = -EINVAL;
2295 goto out;
2296 }
2297
62443be6
VS		 2298 /* Check whether this plane supports the fb pixel format. */
2299 for (i = 0; i < plane->format_count; i++)
2300 if (fb->pixel_format == plane->format_types[i])
2301 break;
2302 if (i == plane->format_count) {
6ba6d03e
VS		 2303 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2304 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2305 ret = -EINVAL;
2306 goto out;
2307 }
2308
42ef8789
VS		 2309 fb_width = fb->width << 16;
2310 fb_height = fb->height << 16;
2311
2312 /* Make sure source coordinates are inside the fb. */
b36552b3
MR		 2313 if (src_w > fb_width ||
2314 src_x > fb_width - src_w ||
2315 src_h > fb_height ||
2316 src_y > fb_height - src_h) {
42ef8789
VS		 2317 DRM_DEBUG_KMS("Invalid source coordinates "
2318 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
b36552b3
MR		 2319 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2320 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2321 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2322 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
42ef8789
VS		 2323 ret = -ENOSPC;
2324 goto out;
2325 }
2326
3d30a59b 2327 plane->old_fb = plane->fb;
8cf5c917 2328 ret = plane->funcs->update_plane(plane, crtc, fb,
b36552b3
MR		 2329 crtc_x, crtc_y, crtc_w, crtc_h,
2330 src_x, src_y, src_w, src_h);
8cf5c917
JB		 2331 if (!ret) {
2332 plane->crtc = crtc;
2333 plane->fb = fb;
35f8badc 2334 fb = NULL;
0fe27f06 2335 } else {
3d30a59b 2336 plane->old_fb = NULL;
8cf5c917
JB		 2337 }
2338
2339out:
6c2a7532
DV		 2340 if (fb)
2341 drm_framebuffer_unreference(fb);
3d30a59b
DV		 2342 if (plane->old_fb)
2343 drm_framebuffer_unreference(plane->old_fb);
2344 plane->old_fb = NULL;
8cf5c917
JB		 2345
2346 return ret;
f2b50c11 2347}
b36552b3 2348
f2b50c11
DV		 2349static int setplane_internal(struct drm_plane *plane,
2350 struct drm_crtc *crtc,
2351 struct drm_framebuffer *fb,
2352 int32_t crtc_x, int32_t crtc_y,
2353 uint32_t crtc_w, uint32_t crtc_h,
2354 /* src_{x,y,w,h} values are 16.16 fixed point */
2355 uint32_t src_x, uint32_t src_y,
2356 uint32_t src_w, uint32_t src_h)
2357{
2358 int ret;
2359
2360 drm_modeset_lock_all(plane->dev);
2361 ret = __setplane_internal(plane, crtc, fb,
2362 crtc_x, crtc_y, crtc_w, crtc_h,
2363 src_x, src_y, src_w, src_h);
2364 drm_modeset_unlock_all(plane->dev);
2365
2366 return ret;
b36552b3
MR		 2367}
2368
2369/**
2370 * drm_mode_setplane - configure a plane's configuration
2371 * @dev: DRM device
2372 * @data: ioctl data*
2373 * @file_priv: DRM file info
2374 *
2375 * Set plane configuration, including placement, fb, scaling, and other factors.
2376 * Or pass a NULL fb to disable (planes may be disabled without providing a
2377 * valid crtc).
2378 *
2379 * Returns:
2380 * Zero on success, errno on failure.
2381 */
2382int drm_mode_setplane(struct drm_device *dev, void *data,
2383 struct drm_file *file_priv)
2384{
2385 struct drm_mode_set_plane *plane_req = data;
2386 struct drm_mode_object *obj;
2387 struct drm_plane *plane;
2388 struct drm_crtc *crtc = NULL;
2389 struct drm_framebuffer *fb = NULL;
2390
2391 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2392 return -EINVAL;
2393
2394 /* Give drivers some help against integer overflows */
2395 if (plane_req->crtc_w > INT_MAX ||
2396 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2397 plane_req->crtc_h > INT_MAX ||
2398 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2399 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2400 plane_req->crtc_w, plane_req->crtc_h,
2401 plane_req->crtc_x, plane_req->crtc_y);
2402 return -ERANGE;
2403 }
2404
2405 /*
2406 * First, find the plane, crtc, and fb objects. If not available,
2407 * we don't bother to call the driver.
2408 */
2409 obj = drm_mode_object_find(dev, plane_req->plane_id,
2410 DRM_MODE_OBJECT_PLANE);
2411 if (!obj) {
2412 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2413 plane_req->plane_id);
2414 return -ENOENT;
2415 }
2416 plane = obj_to_plane(obj);
2417
2418 if (plane_req->fb_id) {
2419 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2420 if (!fb) {
2421 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2422 plane_req->fb_id);
2423 return -ENOENT;
2424 }
2425
2426 obj = drm_mode_object_find(dev, plane_req->crtc_id,
2427 DRM_MODE_OBJECT_CRTC);
2428 if (!obj) {
2429 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2430 plane_req->crtc_id);
2431 return -ENOENT;
2432 }
2433 crtc = obj_to_crtc(obj);
2434 }
2435
161d0dc1
MR		 2436 /*
2437 * setplane_internal will take care of deref'ing either the old or new
2438 * framebuffer depending on success.
2439 */
17cfd91f 2440 return setplane_internal(plane, crtc, fb,
b36552b3
MR		 2441 plane_req->crtc_x, plane_req->crtc_y,
2442 plane_req->crtc_w, plane_req->crtc_h,
2443 plane_req->src_x, plane_req->src_y,
2444 plane_req->src_w, plane_req->src_h);
8cf5c917
JB		 2445}
2446
2d13b679
DV		 2447/**
2448 * drm_mode_set_config_internal - helper to call ->set_config
2449 * @set: modeset config to set
2450 *
2451 * This is a little helper to wrap internal calls to the ->set_config driver
2452 * interface. The only thing it adds is correct refcounting dance.
c8e32cc1
DV		 2453 *
2454 * Returns:
2455 * Zero on success, errno on failure.
2d13b679
DV		 2456 */
2457int drm_mode_set_config_internal(struct drm_mode_set *set)
2458{
2459 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2460 struct drm_framebuffer *fb;
2461 struct drm_crtc *tmp;
b0d12325
DV		 2462 int ret;
2463
5cef29aa
DV		 2464 /*
2465 * NOTE: ->set_config can also disable other crtcs (if we steal all
2466 * connectors from it), hence we need to refcount the fbs across all
2467 * crtcs. Atomic modeset will have saner semantics ...
2468 */
2469 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
3d30a59b 2470 tmp->primary->old_fb = tmp->primary->fb;
5cef29aa 2471
b0d12325 2472 fb = set->fb;
2d13b679 2473
b0d12325
DV		 2474 ret = crtc->funcs->set_config(set);
2475 if (ret == 0) {
e13161af 2476 crtc->primary->crtc = crtc;
0fe27f06 2477 crtc->primary->fb = fb;
5cef29aa 2478 }
cc85e121 2479
5cef29aa 2480 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
f4510a27
MR		 2481 if (tmp->primary->fb)
2482 drm_framebuffer_reference(tmp->primary->fb);
3d30a59b
DV		 2483 if (tmp->primary->old_fb)
2484 drm_framebuffer_unreference(tmp->primary->old_fb);
2485 tmp->primary->old_fb = NULL;
b0d12325
DV		 2486 }
2487
2488 return ret;
2d13b679
DV		 2489}
2490EXPORT_SYMBOL(drm_mode_set_config_internal);
2491
af93629d
MR		 2492/**
2493 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2494 * CRTC viewport
2495 * @crtc: CRTC that framebuffer will be displayed on
2496 * @x: x panning
2497 * @y: y panning
2498 * @mode: mode that framebuffer will be displayed under
2499 * @fb: framebuffer to check size of
c11e9283 2500 */
af93629d
MR		 2501int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2502 int x, int y,
2503 const struct drm_display_mode *mode,
2504 const struct drm_framebuffer *fb)
c11e9283
DL		 2505
2506{
2507 int hdisplay, vdisplay;
2508
2509 hdisplay = mode->hdisplay;
2510 vdisplay = mode->vdisplay;
2511
a0c1bbb0
DL		 2512 if (drm_mode_is_stereo(mode)) {
2513 struct drm_display_mode adjusted = *mode;
2514
2515 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2516 hdisplay = adjusted.crtc_hdisplay;
2517 vdisplay = adjusted.crtc_vdisplay;
2518 }
2519
c11e9283
DL		 2520 if (crtc->invert_dimensions)
2521 swap(hdisplay, vdisplay);
2522
2523 if (hdisplay > fb->width ||
2524 vdisplay > fb->height ||
2525 x > fb->width - hdisplay ||
2526 y > fb->height - vdisplay) {
2527 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2528 fb->width, fb->height, hdisplay, vdisplay, x, y,
2529 crtc->invert_dimensions ? " (inverted)" : "");
2530 return -ENOSPC;
2531 }
2532
2533 return 0;
2534}
af93629d 2535EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2536
f453ba04
DA		 2537/**
2538 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2539 * @dev: drm device for the ioctl
2540 * @data: data pointer for the ioctl
2541 * @file_priv: drm file for the ioctl call
f453ba04 2542 *
f453ba04
DA		 2543 * Build a new CRTC configuration based on user request.
2544 *
2545 * Called by the user via ioctl.
2546 *
c8e32cc1 2547 * Returns:
f453ba04
DA		 2548 * Zero on success, errno on failure.
2549 */
2550int drm_mode_setcrtc(struct drm_device *dev, void *data,
2551 struct drm_file *file_priv)
2552{
2553 struct drm_mode_config *config = &dev->mode_config;
2554 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2555 struct drm_crtc *crtc;
f453ba04
DA		 2556 struct drm_connector **connector_set = NULL, *connector;
2557 struct drm_framebuffer *fb = NULL;
2558 struct drm_display_mode *mode = NULL;
2559 struct drm_mode_set set;
2560 uint32_t __user *set_connectors_ptr;
4a1b0714 2561 int ret;
f453ba04
DA		 2562 int i;
2563
fb3b06c8
DA		 2564 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2565 return -EINVAL;
2566
1d97e915
VS		 2567 /* For some reason crtc x/y offsets are signed internally. */
2568 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2569 return -ERANGE;
2570
84849903 2571 drm_modeset_lock_all(dev);
a2b34e22
RC		 2572 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2573 if (!crtc) {
58367ed6 2574 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2575 ret = -ENOENT;
f453ba04
DA		 2576 goto out;
2577 }
9440106b 2578 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 2579
2580 if (crtc_req->mode_valid) {
2581 /* If we have a mode we need a framebuffer. */
2582 /* If we pass -1, set the mode with the currently bound fb */
2583 if (crtc_req->fb_id == -1) {
f4510a27 2584 if (!crtc->primary->fb) {
6653cc8d
VS		 2585 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2586 ret = -EINVAL;
2587 goto out;
f453ba04 2588 }
f4510a27 2589 fb = crtc->primary->fb;
b0d12325
DV		 2590 /* Make refcounting symmetric with the lookup path. */
2591 drm_framebuffer_reference(fb);
f453ba04 2592 } else {
786b99ed
DV		 2593 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2594 if (!fb) {
58367ed6
ZY		 2595 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2596 crtc_req->fb_id);
37c4e705 2597 ret = -ENOENT;
f453ba04
DA		 2598 goto out;
2599 }
f453ba04
DA		 2600 }
2601
2602 mode = drm_mode_create(dev);
ee34ab5b
VS		 2603 if (!mode) {
2604 ret = -ENOMEM;
2605 goto out;
2606 }
2607
90367bf6
VS		 2608 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2609 if (ret) {
2610 DRM_DEBUG_KMS("Invalid mode\n");
2611 goto out;
2612 }
2613
f453ba04 2614 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2615
c11e9283
DL		 2616 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2617 mode, fb);
2618 if (ret)
5f61bb42 2619 goto out;
c11e9283 2620
f453ba04
DA		 2621 }
2622
2623 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2624 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2625 ret = -EINVAL;
2626 goto out;
2627 }
2628
7781de74 2629 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2630 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2631 crtc_req->count_connectors);
2632 ret = -EINVAL;
2633 goto out;
2634 }
2635
2636 if (crtc_req->count_connectors > 0) {
2637 u32 out_id;
2638
2639 /* Avoid unbounded kernel memory allocation */
2640 if (crtc_req->count_connectors > config->num_connector) {
2641 ret = -EINVAL;
2642 goto out;
2643 }
2644
2645 connector_set = kmalloc(crtc_req->count_connectors *
2646 sizeof(struct drm_connector *),
2647 GFP_KERNEL);
2648 if (!connector_set) {
2649 ret = -ENOMEM;
2650 goto out;
2651 }
2652
2653 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2654 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2655 if (get_user(out_id, &set_connectors_ptr[i])) {
2656 ret = -EFAULT;
2657 goto out;
2658 }
2659
a2b34e22
RC		 2660 connector = drm_connector_find(dev, out_id);
2661 if (!connector) {
58367ed6
ZY		 2662 DRM_DEBUG_KMS("Connector id %d unknown\n",
2663 out_id);
f27657f2 2664 ret = -ENOENT;
f453ba04
DA		 2665 goto out;
2666 }
9440106b
JG		 2667 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2668 connector->base.id,
25933820 2669 connector->name);
f453ba04
DA		 2670
2671 connector_set[i] = connector;
2672 }
2673 }
2674
2675 set.crtc = crtc;
2676 set.x = crtc_req->x;
2677 set.y = crtc_req->y;
2678 set.mode = mode;
2679 set.connectors = connector_set;
2680 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2681 set.fb = fb;
2d13b679 2682 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2683
2684out:
b0d12325
DV		 2685 if (fb)
2686 drm_framebuffer_unreference(fb);
2687
f453ba04 2688 kfree(connector_set);
ee34ab5b 2689 drm_mode_destroy(dev, mode);
84849903 2690 drm_modeset_unlock_all(dev);
f453ba04
DA		 2691 return ret;
2692}
2693
161d0dc1
MR		 2694/**
2695 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2696 * universal plane handler call
2697 * @crtc: crtc to update cursor for
2698 * @req: data pointer for the ioctl
2699 * @file_priv: drm file for the ioctl call
2700 *
2701 * Legacy cursor ioctl's work directly with driver buffer handles. To
2702 * translate legacy ioctl calls into universal plane handler calls, we need to
2703 * wrap the native buffer handle in a drm_framebuffer.
2704 *
2705 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2706 * buffer with a pitch of 4*width; the universal plane interface should be used
2707 * directly in cases where the hardware can support other buffer settings and
2708 * userspace wants to make use of these capabilities.
2709 *
2710 * Returns:
2711 * Zero on success, errno on failure.
2712 */
2713static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2714 struct drm_mode_cursor2 *req,
2715 struct drm_file *file_priv)
2716{
2717 struct drm_device *dev = crtc->dev;
2718 struct drm_framebuffer *fb = NULL;
2719 struct drm_mode_fb_cmd2 fbreq = {
2720 .width = req->width,
2721 .height = req->height,
2722 .pixel_format = DRM_FORMAT_ARGB8888,
2723 .pitches = { req->width * 4 },
2724 .handles = { req->handle },
2725 };
2726 int32_t crtc_x, crtc_y;
2727 uint32_t crtc_w = 0, crtc_h = 0;
2728 uint32_t src_w = 0, src_h = 0;
2729 int ret = 0;
2730
2731 BUG_ON(!crtc->cursor);
f2b50c11 2732 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
161d0dc1
MR		 2733
2734 /*
2735 * Obtain fb we'll be using (either new or existing) and take an extra
2736 * reference to it if fb != null. setplane will take care of dropping
2737 * the reference if the plane update fails.
2738 */
2739 if (req->flags & DRM_MODE_CURSOR_BO) {
2740 if (req->handle) {
2741 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2742 if (IS_ERR(fb)) {
2743 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2744 return PTR_ERR(fb);
2745 }
2746
2747 drm_framebuffer_reference(fb);
2748 } else {
2749 fb = NULL;
2750 }
2751 } else {
161d0dc1
MR		 2752 fb = crtc->cursor->fb;
2753 if (fb)
2754 drm_framebuffer_reference(fb);
161d0dc1
MR		 2755 }
2756
2757 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2758 crtc_x = req->x;
2759 crtc_y = req->y;
2760 } else {
2761 crtc_x = crtc->cursor_x;
2762 crtc_y = crtc->cursor_y;
2763 }
2764
2765 if (fb) {
2766 crtc_w = fb->width;
2767 crtc_h = fb->height;
2768 src_w = fb->width << 16;
2769 src_h = fb->height << 16;
2770 }
2771
2772 /*
2773 * setplane_internal will take care of deref'ing either the old or new
2774 * framebuffer depending on success.
2775 */
f2b50c11 2776 ret = __setplane_internal(crtc->cursor, crtc, fb,
161d0dc1
MR		 2777 crtc_x, crtc_y, crtc_w, crtc_h,
2778 0, 0, src_w, src_h);
2779
2780 /* Update successful; save new cursor position, if necessary */
2781 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2782 crtc->cursor_x = req->x;
2783 crtc->cursor_y = req->y;
2784 }
2785
2786 return ret;
2787}
2788
4c813d4d
DA		 2789static int drm_mode_cursor_common(struct drm_device *dev,
2790 struct drm_mode_cursor2 *req,
2791 struct drm_file *file_priv)
f453ba04 2792{
f453ba04
DA		 2793 struct drm_crtc *crtc;
2794 int ret = 0;
2795
fb3b06c8
DA		 2796 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2797 return -EINVAL;
2798
7c4eaca4 2799 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 2800 return -EINVAL;
f453ba04 2801
a2b34e22
RC		 2802 crtc = drm_crtc_find(dev, req->crtc_id);
2803 if (!crtc) {
58367ed6 2804 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 2805 return -ENOENT;
f453ba04 2806 }
f453ba04 2807
161d0dc1
MR		 2808 /*
2809 * If this crtc has a universal cursor plane, call that plane's update
2810 * handler rather than using legacy cursor handlers.
2811 */
d059f652 2812 drm_modeset_lock_crtc(crtc);
f2b50c11
DV		 2813 if (crtc->cursor) {
2814 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2815 goto out;
2816 }
2817
f453ba04 2818 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 2819 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 2820 ret = -ENXIO;
2821 goto out;
2822 }
2823 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 2824 if (crtc->funcs->cursor_set2)
2825 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2826 req->width, req->height, req->hot_x, req->hot_y);
2827 else
2828 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2829 req->width, req->height);
f453ba04
DA		 2830 }
2831
2832 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2833 if (crtc->funcs->cursor_move) {
2834 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2835 } else {
f453ba04
DA		 2836 ret = -EFAULT;
2837 goto out;
2838 }
2839 }
2840out:
d059f652 2841 drm_modeset_unlock_crtc(crtc);
dac35663 2842
f453ba04 2843 return ret;
4c813d4d
DA		 2844
2845}
c8e32cc1
DV		 2846
2847
2848/**
2849 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2850 * @dev: drm device for the ioctl
2851 * @data: data pointer for the ioctl
2852 * @file_priv: drm file for the ioctl call
2853 *
2854 * Set the cursor configuration based on user request.
2855 *
2856 * Called by the user via ioctl.
2857 *
2858 * Returns:
2859 * Zero on success, errno on failure.
2860 */
4c813d4d 2861int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 2862 void *data, struct drm_file *file_priv)
4c813d4d
DA		 2863{
2864 struct drm_mode_cursor *req = data;
2865 struct drm_mode_cursor2 new_req;
2866
2867 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2868 new_req.hot_x = new_req.hot_y = 0;
2869
2870 return drm_mode_cursor_common(dev, &new_req, file_priv);
2871}
2872
c8e32cc1
DV		 2873/**
2874 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2875 * @dev: drm device for the ioctl
2876 * @data: data pointer for the ioctl
2877 * @file_priv: drm file for the ioctl call
2878 *
2879 * Set the cursor configuration based on user request. This implements the 2nd
2880 * version of the cursor ioctl, which allows userspace to additionally specify
2881 * the hotspot of the pointer.
2882 *
2883 * Called by the user via ioctl.
2884 *
2885 * Returns:
2886 * Zero on success, errno on failure.
2887 */
4c813d4d
DA		 2888int drm_mode_cursor2_ioctl(struct drm_device *dev,
2889 void *data, struct drm_file *file_priv)
2890{
2891 struct drm_mode_cursor2 *req = data;
2892 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 2893}
2894
c8e32cc1
DV		 2895/**
2896 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2897 * @bpp: bits per pixels
2898 * @depth: bit depth per pixel
2899 *
2900 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2901 * Useful in fbdev emulation code, since that deals in those values.
2902 */
308e5bcb
JB		 2903uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2904{
2905 uint32_t fmt;
2906
2907 switch (bpp) {
2908 case 8:
d84f031b 2909 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 2910 break;
2911 case 16:
2912 if (depth == 15)
04b3924d 2913 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 2914 else
04b3924d 2915 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 2916 break;
2917 case 24:
04b3924d 2918 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 2919 break;
2920 case 32:
2921 if (depth == 24)
04b3924d 2922 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 2923 else if (depth == 30)
04b3924d 2924 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 2925 else
04b3924d 2926 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 2927 break;
2928 default:
04b3924d
VS		 2929 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2930 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 2931 break;
2932 }
2933
2934 return fmt;
2935}
2936EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2937
f453ba04
DA		 2938/**
2939 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 2940 * @dev: drm device for the ioctl
2941 * @data: data pointer for the ioctl
2942 * @file_priv: drm file for the ioctl call
f453ba04 2943 *
c8e32cc1 2944 * Add a new FB to the specified CRTC, given a user request. This is the
209f5527 2945 * original addfb ioctl which only supported RGB formats.
f453ba04
DA		 2946 *
2947 * Called by the user via ioctl.
2948 *
c8e32cc1 2949 * Returns:
f453ba04
DA		 2950 * Zero on success, errno on failure.
2951 */
2952int drm_mode_addfb(struct drm_device *dev,
2953 void *data, struct drm_file *file_priv)
2954{
308e5bcb
JB		 2955 struct drm_mode_fb_cmd *or = data;
2956 struct drm_mode_fb_cmd2 r = {};
228f2cb3 2957 int ret;
308e5bcb 2958
228f2cb3 2959 /* convert to new format and call new ioctl */
308e5bcb
JB		 2960 r.fb_id = or->fb_id;
2961 r.width = or->width;
2962 r.height = or->height;
2963 r.pitches[0] = or->pitch;
2964 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2965 r.handles[0] = or->handle;
2966
228f2cb3
CE		 2967 ret = drm_mode_addfb2(dev, &r, file_priv);
2968 if (ret)
2969 return ret;
308e5bcb 2970
228f2cb3 2971 or->fb_id = r.fb_id;
4b096ac1 2972
308e5bcb
JB		 2973 return ret;
2974}
2975
cff91b62 2976static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 2977{
2978 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2979
2980 switch (format) {
2981 case DRM_FORMAT_C8:
2982 case DRM_FORMAT_RGB332:
2983 case DRM_FORMAT_BGR233:
2984 case DRM_FORMAT_XRGB4444:
2985 case DRM_FORMAT_XBGR4444:
2986 case DRM_FORMAT_RGBX4444:
2987 case DRM_FORMAT_BGRX4444:
2988 case DRM_FORMAT_ARGB4444:
2989 case DRM_FORMAT_ABGR4444:
2990 case DRM_FORMAT_RGBA4444:
2991 case DRM_FORMAT_BGRA4444:
2992 case DRM_FORMAT_XRGB1555:
2993 case DRM_FORMAT_XBGR1555:
2994 case DRM_FORMAT_RGBX5551:
2995 case DRM_FORMAT_BGRX5551:
2996 case DRM_FORMAT_ARGB1555:
2997 case DRM_FORMAT_ABGR1555:
2998 case DRM_FORMAT_RGBA5551:
2999 case DRM_FORMAT_BGRA5551:
3000 case DRM_FORMAT_RGB565:
3001 case DRM_FORMAT_BGR565:
3002 case DRM_FORMAT_RGB888:
3003 case DRM_FORMAT_BGR888:
3004 case DRM_FORMAT_XRGB8888:
3005 case DRM_FORMAT_XBGR8888:
3006 case DRM_FORMAT_RGBX8888:
3007 case DRM_FORMAT_BGRX8888:
3008 case DRM_FORMAT_ARGB8888:
3009 case DRM_FORMAT_ABGR8888:
3010 case DRM_FORMAT_RGBA8888:
3011 case DRM_FORMAT_BGRA8888:
3012 case DRM_FORMAT_XRGB2101010:
3013 case DRM_FORMAT_XBGR2101010:
3014 case DRM_FORMAT_RGBX1010102:
3015 case DRM_FORMAT_BGRX1010102:
3016 case DRM_FORMAT_ARGB2101010:
3017 case DRM_FORMAT_ABGR2101010:
3018 case DRM_FORMAT_RGBA1010102:
3019 case DRM_FORMAT_BGRA1010102:
3020 case DRM_FORMAT_YUYV:
3021 case DRM_FORMAT_YVYU:
3022 case DRM_FORMAT_UYVY:
3023 case DRM_FORMAT_VYUY:
3024 case DRM_FORMAT_AYUV:
3025 case DRM_FORMAT_NV12:
3026 case DRM_FORMAT_NV21:
3027 case DRM_FORMAT_NV16:
3028 case DRM_FORMAT_NV61:
ba623f6a
LP		 3029 case DRM_FORMAT_NV24:
3030 case DRM_FORMAT_NV42:
935b5977
VS		 3031 case DRM_FORMAT_YUV410:
3032 case DRM_FORMAT_YVU410:
3033 case DRM_FORMAT_YUV411:
3034 case DRM_FORMAT_YVU411:
3035 case DRM_FORMAT_YUV420:
3036 case DRM_FORMAT_YVU420:
3037 case DRM_FORMAT_YUV422:
3038 case DRM_FORMAT_YVU422:
3039 case DRM_FORMAT_YUV444:
3040 case DRM_FORMAT_YVU444:
3041 return 0;
3042 default:
23c453a4
VS		 3043 DRM_DEBUG_KMS("invalid pixel format %s\n",
3044 drm_get_format_name(r->pixel_format));
935b5977
VS		 3045 return -EINVAL;
3046 }
3047}
3048
cff91b62 3049static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 3050{
3051 int ret, hsub, vsub, num_planes, i;
3052
3053 ret = format_check(r);
3054 if (ret) {
6ba6d03e
VS		 3055 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3056 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 3057 return ret;
3058 }
3059
3060 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3061 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3062 num_planes = drm_format_num_planes(r->pixel_format);
3063
3064 if (r->width == 0 || r->width % hsub) {
209f5527 3065 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
d1b45d5f
VS		 3066 return -EINVAL;
3067 }
3068
3069 if (r->height == 0 || r->height % vsub) {
1aa1b11c 3070 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 3071 return -EINVAL;
3072 }
3073
3074 for (i = 0; i < num_planes; i++) {
3075 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 3076 unsigned int height = r->height / (i != 0 ? vsub : 1);
3077 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 3078
3079 if (!r->handles[i]) {
1aa1b11c 3080 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 3081 return -EINVAL;
3082 }
3083
b180b5d1
VS		 3084 if ((uint64_t) width * cpp > UINT_MAX)
3085 return -ERANGE;
3086
3087 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3088 return -ERANGE;
3089
3090 if (r->pitches[i] < width * cpp) {
1aa1b11c 3091 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 3092 return -EINVAL;
3093 }
3094 }
3095
3096 return 0;
3097}
3098
c394c2b0
MR		 3099static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3100 struct drm_mode_fb_cmd2 *r,
3101 struct drm_file *file_priv)
308e5bcb 3102{
f453ba04
DA		 3103 struct drm_mode_config *config = &dev->mode_config;
3104 struct drm_framebuffer *fb;
4a1b0714 3105 int ret;
f453ba04 3106
e3cc3520
VS		 3107 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3108 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
c394c2b0 3109 return ERR_PTR(-EINVAL);
e3cc3520
VS		 3110 }
3111
f453ba04 3112 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 3113 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 3114 r->width, config->min_width, config->max_width);
c394c2b0 3115 return ERR_PTR(-EINVAL);
f453ba04
DA		 3116 }
3117 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 3118 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 3119 r->height, config->min_height, config->max_height);
c394c2b0 3120 return ERR_PTR(-EINVAL);
f453ba04
DA		 3121 }
3122
d1b45d5f
VS		 3123 ret = framebuffer_check(r);
3124 if (ret)
c394c2b0 3125 return ERR_PTR(ret);
935b5977 3126
f453ba04 3127 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 3128 if (IS_ERR(fb)) {
1aa1b11c 3129 DRM_DEBUG_KMS("could not create framebuffer\n");
c394c2b0 3130 return fb;
f453ba04
DA		 3131 }
3132
4b096ac1 3133 mutex_lock(&file_priv->fbs_lock);
e0c8463a 3134 r->fb_id = fb->base.id;
f453ba04 3135 list_add(&fb->filp_head, &file_priv->fbs);
9440106b 3136 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
4b096ac1 3137 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3138
c394c2b0
MR		 3139 return fb;
3140}
4b096ac1 3141
c394c2b0
MR		 3142/**
3143 * drm_mode_addfb2 - add an FB to the graphics configuration
3144 * @dev: drm device for the ioctl
3145 * @data: data pointer for the ioctl
3146 * @file_priv: drm file for the ioctl call
3147 *
3148 * Add a new FB to the specified CRTC, given a user request with format. This is
3149 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3150 * and uses fourcc codes as pixel format specifiers.
3151 *
3152 * Called by the user via ioctl.
3153 *
3154 * Returns:
3155 * Zero on success, errno on failure.
3156 */
3157int drm_mode_addfb2(struct drm_device *dev,
3158 void *data, struct drm_file *file_priv)
3159{
3160 struct drm_framebuffer *fb;
3161
3162 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3163 return -EINVAL;
3164
3165 fb = add_framebuffer_internal(dev, data, file_priv);
3166 if (IS_ERR(fb))
3167 return PTR_ERR(fb);
3168
3169 return 0;
f453ba04
DA		 3170}
3171
3172/**
3173 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 3174 * @dev: drm device for the ioctl
3175 * @data: data pointer for the ioctl
3176 * @file_priv: drm file for the ioctl call
f453ba04 3177 *
f453ba04
DA		 3178 * Remove the FB specified by the user.
3179 *
3180 * Called by the user via ioctl.
3181 *
c8e32cc1 3182 * Returns:
f453ba04
DA		 3183 * Zero on success, errno on failure.
3184 */
3185int drm_mode_rmfb(struct drm_device *dev,
3186 void *data, struct drm_file *file_priv)
3187{
f453ba04
DA		 3188 struct drm_framebuffer *fb = NULL;
3189 struct drm_framebuffer *fbl = NULL;
3190 uint32_t *id = data;
f453ba04
DA		 3191 int found = 0;
3192
fb3b06c8
DA		 3193 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3194 return -EINVAL;
3195
4b096ac1 3196 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 3197 mutex_lock(&dev->mode_config.fb_lock);
3198 fb = __drm_framebuffer_lookup(dev, *id);
3199 if (!fb)
3200 goto fail_lookup;
3201
f453ba04
DA		 3202 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3203 if (fb == fbl)
3204 found = 1;
2b677e8c
DV		 3205 if (!found)
3206 goto fail_lookup;
3207
3208 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3209 __drm_framebuffer_unregister(dev, fb);
f453ba04 3210
4b096ac1 3211 list_del_init(&fb->filp_head);
2b677e8c 3212 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 3213 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3214
4b096ac1 3215 drm_framebuffer_remove(fb);
4b096ac1 3216
2b677e8c
DV		 3217 return 0;
3218
3219fail_lookup:
3220 mutex_unlock(&dev->mode_config.fb_lock);
3221 mutex_unlock(&file_priv->fbs_lock);
3222
37c4e705 3223 return -ENOENT;
f453ba04
DA		 3224}
3225
3226/**
3227 * drm_mode_getfb - get FB info
065a50ed
DV		 3228 * @dev: drm device for the ioctl
3229 * @data: data pointer for the ioctl
3230 * @file_priv: drm file for the ioctl call
f453ba04 3231 *
f453ba04
DA		 3232 * Lookup the FB given its ID and return info about it.
3233 *
3234 * Called by the user via ioctl.
3235 *
c8e32cc1 3236 * Returns:
f453ba04
DA		 3237 * Zero on success, errno on failure.
3238 */
3239int drm_mode_getfb(struct drm_device *dev,
3240 void *data, struct drm_file *file_priv)
3241{
3242 struct drm_mode_fb_cmd *r = data;
f453ba04 3243 struct drm_framebuffer *fb;
58c0dca1 3244 int ret;
f453ba04 3245
fb3b06c8
DA		 3246 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3247 return -EINVAL;
3248
786b99ed 3249 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 3250 if (!fb)
37c4e705 3251 return -ENOENT;
f453ba04
DA		 3252
3253 r->height = fb->height;
3254 r->width = fb->width;
3255 r->depth = fb->depth;
3256 r->bpp = fb->bits_per_pixel;
01f2c773 3257 r->pitch = fb->pitches[0];
101b96f3 3258 if (fb->funcs->create_handle) {
09f308f7 3259 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 3260 drm_is_control_client(file_priv)) {
101b96f3
DH		 3261 ret = fb->funcs->create_handle(fb, file_priv,
3262 &r->handle);
3263 } else {
3264 /* GET_FB() is an unprivileged ioctl so we must not
3265 * return a buffer-handle to non-master processes! For
3266 * backwards-compatibility reasons, we cannot make
3267 * GET_FB() privileged, so just return an invalid handle
3268 * for non-masters. */
3269 r->handle = 0;
3270 ret = 0;
3271 }
3272 } else {
af26ef3b 3273 ret = -ENODEV;
101b96f3 3274 }
f453ba04 3275
58c0dca1
DV		 3276 drm_framebuffer_unreference(fb);
3277
f453ba04
DA		 3278 return ret;
3279}
3280
c8e32cc1
DV		 3281/**
3282 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3283 * @dev: drm device for the ioctl
3284 * @data: data pointer for the ioctl
3285 * @file_priv: drm file for the ioctl call
3286 *
3287 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3288 * rectangle list. Generic userspace which does frontbuffer rendering must call
3289 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3290 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3291 *
3292 * Modesetting drivers which always update the frontbuffer do not need to
3293 * implement the corresponding ->dirty framebuffer callback.
3294 *
3295 * Called by the user via ioctl.
3296 *
3297 * Returns:
3298 * Zero on success, errno on failure.
3299 */
884840aa
JB		 3300int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3301 void *data, struct drm_file *file_priv)
3302{
3303 struct drm_clip_rect __user *clips_ptr;
3304 struct drm_clip_rect *clips = NULL;
3305 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 3306 struct drm_framebuffer *fb;
3307 unsigned flags;
3308 int num_clips;
4a1b0714 3309 int ret;
884840aa 3310
fb3b06c8
DA		 3311 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3312 return -EINVAL;
3313
786b99ed 3314 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 3315 if (!fb)
37c4e705 3316 return -ENOENT;
884840aa
JB		 3317
3318 num_clips = r->num_clips;
81f6c7f8 3319 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 3320
3321 if (!num_clips != !clips_ptr) {
3322 ret = -EINVAL;
3323 goto out_err1;
3324 }
3325
3326 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3327
3328 /* If userspace annotates copy, clips must come in pairs */
3329 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3330 ret = -EINVAL;
3331 goto out_err1;
3332 }
3333
3334 if (num_clips && clips_ptr) {
a5cd3351
XW		 3335 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3336 ret = -EINVAL;
3337 goto out_err1;
3338 }
884840aa
JB		 3339 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3340 if (!clips) {
3341 ret = -ENOMEM;
3342 goto out_err1;
3343 }
3344
3345 ret = copy_from_user(clips, clips_ptr,
3346 num_clips * sizeof(*clips));
e902a358
DC		 3347 if (ret) {
3348 ret = -EFAULT;
884840aa 3349 goto out_err2;
e902a358 3350 }
884840aa
JB		 3351 }
3352
3353 if (fb->funcs->dirty) {
02b00162
TH		 3354 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3355 clips, num_clips);
884840aa
JB		 3356 } else {
3357 ret = -ENOSYS;
884840aa
JB		 3358 }
3359
3360out_err2:
3361 kfree(clips);
3362out_err1:
4ccf097f
DV		 3363 drm_framebuffer_unreference(fb);
3364
884840aa
JB		 3365 return ret;
3366}
3367
3368
f453ba04
DA		 3369/**
3370 * drm_fb_release - remove and free the FBs on this file
065a50ed 3371 * @priv: drm file for the ioctl
f453ba04 3372 *
f453ba04
DA		 3373 * Destroy all the FBs associated with @filp.
3374 *
3375 * Called by the user via ioctl.
3376 *
c8e32cc1 3377 * Returns:
f453ba04
DA		 3378 * Zero on success, errno on failure.
3379 */
ea39f835 3380void drm_fb_release(struct drm_file *priv)
f453ba04 3381{
f453ba04
DA		 3382 struct drm_device *dev = priv->minor->dev;
3383 struct drm_framebuffer *fb, *tfb;
3384
1b116297
DV		 3385 /*
3386 * When the file gets released that means no one else can access the fb
3387 * list any more, so no need to grab fpriv->fbs_lock. And we need to to
3388 * avoid upsetting lockdep since the universal cursor code adds a
3389 * framebuffer while holding mutex locks.
3390 *
3391 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3392 * locks is impossible here since no one else but this function can get
3393 * at it any more.
3394 */
f453ba04 3395 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2b677e8c
DV		 3396
3397 mutex_lock(&dev->mode_config.fb_lock);
3398 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3399 __drm_framebuffer_unregister(dev, fb);
3400 mutex_unlock(&dev->mode_config.fb_lock);
3401
4b096ac1 3402 list_del_init(&fb->filp_head);
2b677e8c
DV		 3403
3404 /* This will also drop the fpriv->fbs reference. */
f7eff60e 3405 drm_framebuffer_remove(fb);
f453ba04 3406 }
f453ba04
DA		 3407}
3408
c8e32cc1
DV		 3409/**
3410 * drm_property_create - create a new property type
3411 * @dev: drm device
3412 * @flags: flags specifying the property type
3413 * @name: name of the property
3414 * @num_values: number of pre-defined values
3415 *
3416 * This creates a new generic drm property which can then be attached to a drm
3417 * object with drm_object_attach_property. The returned property object must be
3418 * freed with drm_property_destroy.
3419 *
3420 * Returns:
3421 * A pointer to the newly created property on success, NULL on failure.
3422 */
f453ba04
DA		 3423struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3424 const char *name, int num_values)
3425{
3426 struct drm_property *property = NULL;
6bfc56aa 3427 int ret;
f453ba04
DA		 3428
3429 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3430 if (!property)
3431 return NULL;
3432
98f75de4
RC		 3433 property->dev = dev;
3434
f453ba04
DA		 3435 if (num_values) {
3436 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3437 if (!property->values)
3438 goto fail;
3439 }
3440
6bfc56aa
VS		 3441 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3442 if (ret)
3443 goto fail;
3444
f453ba04
DA		 3445 property->flags = flags;
3446 property->num_values = num_values;
3447 INIT_LIST_HEAD(&property->enum_blob_list);
3448
471dd2ef 3449 if (name) {
f453ba04 3450 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3451 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3452 }
f453ba04
DA		 3453
3454 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3455
3456 WARN_ON(!drm_property_type_valid(property));
3457
f453ba04
DA		 3458 return property;
3459fail:
6bfc56aa 3460 kfree(property->values);
f453ba04
DA		 3461 kfree(property);
3462 return NULL;
3463}
3464EXPORT_SYMBOL(drm_property_create);
3465
c8e32cc1 3466/**
2aa9d2bc 3467 * drm_property_create_enum - create a new enumeration property type
c8e32cc1
DV		 3468 * @dev: drm device
3469 * @flags: flags specifying the property type
3470 * @name: name of the property
3471 * @props: enumeration lists with property values
3472 * @num_values: number of pre-defined values
3473 *
3474 * This creates a new generic drm property which can then be attached to a drm
3475 * object with drm_object_attach_property. The returned property object must be
3476 * freed with drm_property_destroy.
3477 *
3478 * Userspace is only allowed to set one of the predefined values for enumeration
3479 * properties.
3480 *
3481 * Returns:
3482 * A pointer to the newly created property on success, NULL on failure.
3483 */
4a67d391
SH		 3484struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3485 const char *name,
3486 const struct drm_prop_enum_list *props,
3487 int num_values)
3488{
3489 struct drm_property *property;
3490 int i, ret;
3491
3492 flags |= DRM_MODE_PROP_ENUM;
3493
3494 property = drm_property_create(dev, flags, name, num_values);
3495 if (!property)
3496 return NULL;
3497
3498 for (i = 0; i < num_values; i++) {
3499 ret = drm_property_add_enum(property, i,
3500 props[i].type,
3501 props[i].name);
3502 if (ret) {
3503 drm_property_destroy(dev, property);
3504 return NULL;
3505 }
3506 }
3507
3508 return property;
3509}
3510EXPORT_SYMBOL(drm_property_create_enum);
3511
c8e32cc1 3512/**
2aa9d2bc 3513 * drm_property_create_bitmask - create a new bitmask property type
c8e32cc1
DV		 3514 * @dev: drm device
3515 * @flags: flags specifying the property type
3516 * @name: name of the property
3517 * @props: enumeration lists with property bitflags
295ee853
DV		 3518 * @num_props: size of the @props array
3519 * @supported_bits: bitmask of all supported enumeration values
c8e32cc1 3520 *
295ee853 3521 * This creates a new bitmask drm property which can then be attached to a drm
c8e32cc1
DV		 3522 * object with drm_object_attach_property. The returned property object must be
3523 * freed with drm_property_destroy.
3524 *
3525 * Compared to plain enumeration properties userspace is allowed to set any
3526 * or'ed together combination of the predefined property bitflag values
3527 *
3528 * Returns:
3529 * A pointer to the newly created property on success, NULL on failure.
3530 */
49e27545
RC		 3531struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3532 int flags, const char *name,
3533 const struct drm_prop_enum_list *props,
7689ffb3
VS		 3534 int num_props,
3535 uint64_t supported_bits)
49e27545
RC		 3536{
3537 struct drm_property *property;
7689ffb3
VS		 3538 int i, ret, index = 0;
3539 int num_values = hweight64(supported_bits);
49e27545
RC		 3540
3541 flags |= DRM_MODE_PROP_BITMASK;
3542
3543 property = drm_property_create(dev, flags, name, num_values);
3544 if (!property)
3545 return NULL;
7689ffb3
VS		 3546 for (i = 0; i < num_props; i++) {
3547 if (!(supported_bits & (1ULL << props[i].type)))
3548 continue;
49e27545 3549
7689ffb3
VS		 3550 if (WARN_ON(index >= num_values)) {
3551 drm_property_destroy(dev, property);
3552 return NULL;
3553 }
3554
3555 ret = drm_property_add_enum(property, index++,
49e27545
RC		 3556 props[i].type,
3557 props[i].name);
3558 if (ret) {
3559 drm_property_destroy(dev, property);
3560 return NULL;
3561 }
3562 }
3563
3564 return property;
3565}
3566EXPORT_SYMBOL(drm_property_create_bitmask);
3567
ebc44cf3
RC		 3568static struct drm_property *property_create_range(struct drm_device *dev,
3569 int flags, const char *name,
3570 uint64_t min, uint64_t max)
3571{
3572 struct drm_property *property;
3573
3574 property = drm_property_create(dev, flags, name, 2);
3575 if (!property)
3576 return NULL;
3577
3578 property->values[0] = min;
3579 property->values[1] = max;
3580
3581 return property;
3582}
3583
c8e32cc1 3584/**
2aa9d2bc 3585 * drm_property_create_range - create a new ranged property type
c8e32cc1
DV		 3586 * @dev: drm device
3587 * @flags: flags specifying the property type
3588 * @name: name of the property
3589 * @min: minimum value of the property
3590 * @max: maximum value of the property
3591 *
3592 * This creates a new generic drm property which can then be attached to a drm
3593 * object with drm_object_attach_property. The returned property object must be
3594 * freed with drm_property_destroy.
3595 *
32197aab 3596 * Userspace is allowed to set any integer value in the (min, max) range
c8e32cc1
DV		 3597 * inclusive.
3598 *
3599 * Returns:
3600 * A pointer to the newly created property on success, NULL on failure.
3601 */
d9bc3c02
SH		 3602struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3603 const char *name,
3604 uint64_t min, uint64_t max)
3605{
ebc44cf3
RC		 3606 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3607 name, min, max);
d9bc3c02
SH		 3608}
3609EXPORT_SYMBOL(drm_property_create_range);
3610
ebc44cf3
RC		 3611struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3612 int flags, const char *name,
3613 int64_t min, int64_t max)
3614{
3615 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3616 name, I642U64(min), I642U64(max));
3617}
3618EXPORT_SYMBOL(drm_property_create_signed_range);
3619
98f75de4
RC		 3620struct drm_property *drm_property_create_object(struct drm_device *dev,
3621 int flags, const char *name, uint32_t type)
3622{
3623 struct drm_property *property;
3624
3625 flags |= DRM_MODE_PROP_OBJECT;
3626
3627 property = drm_property_create(dev, flags, name, 1);
3628 if (!property)
3629 return NULL;
3630
3631 property->values[0] = type;
3632
3633 return property;
3634}
3635EXPORT_SYMBOL(drm_property_create_object);
3636
c8e32cc1
DV		 3637/**
3638 * drm_property_add_enum - add a possible value to an enumeration property
3639 * @property: enumeration property to change
3640 * @index: index of the new enumeration
3641 * @value: value of the new enumeration
3642 * @name: symbolic name of the new enumeration
3643 *
3644 * This functions adds enumerations to a property.
3645 *
3646 * It's use is deprecated, drivers should use one of the more specific helpers
3647 * to directly create the property with all enumerations already attached.
3648 *
3649 * Returns:
3650 * Zero on success, error code on failure.
3651 */
f453ba04
DA		 3652int drm_property_add_enum(struct drm_property *property, int index,
3653 uint64_t value, const char *name)
3654{
3655 struct drm_property_enum *prop_enum;
3656
5ea22f24
RC		 3657 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3658 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 3659 return -EINVAL;
3660
3661 /*
3662 * Bitmask enum properties have the additional constraint of values
3663 * from 0 to 63
3664 */
5ea22f24
RC		 3665 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3666 (value > 63))
f453ba04
DA		 3667 return -EINVAL;
3668
3669 if (!list_empty(&property->enum_blob_list)) {
3670 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3671 if (prop_enum->value == value) {
3672 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3673 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3674 return 0;
3675 }
3676 }
3677 }
3678
3679 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3680 if (!prop_enum)
3681 return -ENOMEM;
3682
3683 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3684 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3685 prop_enum->value = value;
3686
3687 property->values[index] = value;
3688 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3689 return 0;
3690}
3691EXPORT_SYMBOL(drm_property_add_enum);
3692
c8e32cc1
DV		 3693/**
3694 * drm_property_destroy - destroy a drm property
3695 * @dev: drm device
3696 * @property: property to destry
3697 *
3698 * This function frees a property including any attached resources like
3699 * enumeration values.
3700 */
f453ba04
DA		 3701void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3702{
3703 struct drm_property_enum *prop_enum, *pt;
3704
3705 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3706 list_del(&prop_enum->head);
3707 kfree(prop_enum);
3708 }
3709
3710 if (property->num_values)
3711 kfree(property->values);
3712 drm_mode_object_put(dev, &property->base);
3713 list_del(&property->head);
3714 kfree(property);
3715}
3716EXPORT_SYMBOL(drm_property_destroy);
3717
c8e32cc1
DV		 3718/**
3719 * drm_object_attach_property - attach a property to a modeset object
3720 * @obj: drm modeset object
3721 * @property: property to attach
3722 * @init_val: initial value of the property
3723 *
3724 * This attaches the given property to the modeset object with the given initial
3725 * value. Currently this function cannot fail since the properties are stored in
3726 * a statically sized array.
3727 */
c543188a
PZ		 3728void drm_object_attach_property(struct drm_mode_object *obj,
3729 struct drm_property *property,
3730 uint64_t init_val)
3731{
7f88a9be 3732 int count = obj->properties->count;
c543188a 3733
7f88a9be
PZ		 3734 if (count == DRM_OBJECT_MAX_PROPERTY) {
3735 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3736 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3737 "you see this message on the same object type.\n",
3738 obj->type);
3739 return;
c543188a
PZ		 3740 }
3741
7f88a9be
PZ		 3742 obj->properties->ids[count] = property->base.id;
3743 obj->properties->values[count] = init_val;
3744 obj->properties->count++;
c543188a
PZ		 3745}
3746EXPORT_SYMBOL(drm_object_attach_property);
3747
c8e32cc1
DV		 3748/**
3749 * drm_object_property_set_value - set the value of a property
3750 * @obj: drm mode object to set property value for
3751 * @property: property to set
3752 * @val: value the property should be set to
3753 *
3754 * This functions sets a given property on a given object. This function only
3755 * changes the software state of the property, it does not call into the
3756 * driver's ->set_property callback.
3757 *
3758 * Returns:
3759 * Zero on success, error code on failure.
3760 */
c543188a
PZ		 3761int drm_object_property_set_value(struct drm_mode_object *obj,
3762 struct drm_property *property, uint64_t val)
3763{
3764 int i;
3765
7f88a9be 3766 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 3767 if (obj->properties->ids[i] == property->base.id) {
3768 obj->properties->values[i] = val;
3769 return 0;
3770 }
3771 }
3772
3773 return -EINVAL;
3774}
3775EXPORT_SYMBOL(drm_object_property_set_value);
3776
c8e32cc1
DV		 3777/**
3778 * drm_object_property_get_value - retrieve the value of a property
3779 * @obj: drm mode object to get property value from
3780 * @property: property to retrieve
3781 * @val: storage for the property value
3782 *
3783 * This function retrieves the softare state of the given property for the given
3784 * property. Since there is no driver callback to retrieve the current property
3785 * value this might be out of sync with the hardware, depending upon the driver
3786 * and property.
3787 *
3788 * Returns:
3789 * Zero on success, error code on failure.
3790 */
c543188a
PZ		 3791int drm_object_property_get_value(struct drm_mode_object *obj,
3792 struct drm_property *property, uint64_t *val)
3793{
3794 int i;
3795
7f88a9be 3796 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 3797 if (obj->properties->ids[i] == property->base.id) {
3798 *val = obj->properties->values[i];
3799 return 0;
3800 }
3801 }
3802
3803 return -EINVAL;
3804}
3805EXPORT_SYMBOL(drm_object_property_get_value);
3806
c8e32cc1
DV		 3807/**
3808 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3809 * @dev: DRM device
3810 * @data: ioctl data
3811 * @file_priv: DRM file info
3812 *
3813 * This function retrieves the current value for an connectors's property.
3814 *
3815 * Called by the user via ioctl.
3816 *
3817 * Returns:
3818 * Zero on success, errno on failure.
3819 */
f453ba04
DA		 3820int drm_mode_getproperty_ioctl(struct drm_device *dev,
3821 void *data, struct drm_file *file_priv)
3822{
f453ba04
DA		 3823 struct drm_mode_get_property *out_resp = data;
3824 struct drm_property *property;
3825 int enum_count = 0;
3826 int blob_count = 0;
3827 int value_count = 0;
3828 int ret = 0, i;
3829 int copied;
3830 struct drm_property_enum *prop_enum;
3831 struct drm_mode_property_enum __user *enum_ptr;
3832 struct drm_property_blob *prop_blob;
81f6c7f8 3833 uint32_t __user *blob_id_ptr;
f453ba04
DA		 3834 uint64_t __user *values_ptr;
3835 uint32_t __user *blob_length_ptr;
3836
fb3b06c8
DA		 3837 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3838 return -EINVAL;
3839
84849903 3840 drm_modeset_lock_all(dev);
a2b34e22
RC		 3841 property = drm_property_find(dev, out_resp->prop_id);
3842 if (!property) {
f27657f2 3843 ret = -ENOENT;
f453ba04
DA		 3844 goto done;
3845 }
f453ba04 3846
5ea22f24
RC		 3847 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3848 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 3849 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3850 enum_count++;
5ea22f24 3851 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
f453ba04
DA		 3852 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3853 blob_count++;
3854 }
3855
3856 value_count = property->num_values;
3857
3858 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3859 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3860 out_resp->flags = property->flags;
3861
3862 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 3863 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 3864 for (i = 0; i < value_count; i++) {
3865 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3866 ret = -EFAULT;
3867 goto done;
3868 }
3869 }
3870 }
3871 out_resp->count_values = value_count;
3872
5ea22f24
RC		 3873 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3874 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 3875 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3876 copied = 0;
81f6c7f8 3877 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
f453ba04
DA		 3878 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3879
3880 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3881 ret = -EFAULT;
3882 goto done;
3883 }
3884
3885 if (copy_to_user(&enum_ptr[copied].name,
3886 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3887 ret = -EFAULT;
3888 goto done;
3889 }
3890 copied++;
3891 }
3892 }
3893 out_resp->count_enum_blobs = enum_count;
3894 }
3895
5ea22f24 3896 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
f453ba04
DA		 3897 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3898 copied = 0;
81f6c7f8
VS		 3899 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3900 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 3901
3902 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3903 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3904 ret = -EFAULT;
3905 goto done;
3906 }
3907
3908 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3909 ret = -EFAULT;
3910 goto done;
3911 }
3912
3913 copied++;
3914 }
3915 }
3916 out_resp->count_enum_blobs = blob_count;
3917 }
3918done:
84849903 3919 drm_modeset_unlock_all(dev);
f453ba04
DA		 3920 return ret;
3921}
3922
3923static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3924 void *data)
3925{
3926 struct drm_property_blob *blob;
6bfc56aa 3927 int ret;
f453ba04
DA		 3928
3929 if (!length || !data)
3930 return NULL;
3931
3932 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3933 if (!blob)
3934 return NULL;
3935
6bfc56aa
VS		 3936 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3937 if (ret) {
3938 kfree(blob);
3939 return NULL;
3940 }
3941
f453ba04
DA		 3942 blob->length = length;
3943
3944 memcpy(blob->data, data, length);
3945
f453ba04
DA		 3946 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3947 return blob;
3948}
3949
3950static void drm_property_destroy_blob(struct drm_device *dev,
3951 struct drm_property_blob *blob)
3952{
3953 drm_mode_object_put(dev, &blob->base);
3954 list_del(&blob->head);
3955 kfree(blob);
3956}
3957
c8e32cc1
DV		 3958/**
3959 * drm_mode_getblob_ioctl - get the contents of a blob property value
3960 * @dev: DRM device
3961 * @data: ioctl data
3962 * @file_priv: DRM file info
3963 *
3964 * This function retrieves the contents of a blob property. The value stored in
3965 * an object's blob property is just a normal modeset object id.
3966 *
3967 * Called by the user via ioctl.
3968 *
3969 * Returns:
3970 * Zero on success, errno on failure.
3971 */
f453ba04
DA		 3972int drm_mode_getblob_ioctl(struct drm_device *dev,
3973 void *data, struct drm_file *file_priv)
3974{
f453ba04
DA		 3975 struct drm_mode_get_blob *out_resp = data;
3976 struct drm_property_blob *blob;
3977 int ret = 0;
81f6c7f8 3978 void __user *blob_ptr;
f453ba04 3979
fb3b06c8
DA		 3980 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3981 return -EINVAL;
3982
84849903 3983 drm_modeset_lock_all(dev);
a2b34e22
RC		 3984 blob = drm_property_blob_find(dev, out_resp->blob_id);
3985 if (!blob) {
f27657f2 3986 ret = -ENOENT;
f453ba04
DA		 3987 goto done;
3988 }
f453ba04
DA		 3989
3990 if (out_resp->length == blob->length) {
81f6c7f8 3991 blob_ptr = (void __user *)(unsigned long)out_resp->data;
f453ba04
DA		 3992 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3993 ret = -EFAULT;
3994 goto done;
3995 }
3996 }
3997 out_resp->length = blob->length;
3998
3999done:
84849903 4000 drm_modeset_unlock_all(dev);
f453ba04
DA		 4001 return ret;
4002}
4003
43aba7eb
DA		 4004int drm_mode_connector_set_path_property(struct drm_connector *connector,
4005 char *path)
4006{
4007 struct drm_device *dev = connector->dev;
4008 int ret, size;
4009 size = strlen(path) + 1;
4010
4011 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4012 size, path);
4013 if (!connector->path_blob_ptr)
4014 return -EINVAL;
4015
4016 ret = drm_object_property_set_value(&connector->base,
4017 dev->mode_config.path_property,
4018 connector->path_blob_ptr->base.id);
4019 return ret;
4020}
4021EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4022
c8e32cc1
DV		 4023/**
4024 * drm_mode_connector_update_edid_property - update the edid property of a connector
4025 * @connector: drm connector
4026 * @edid: new value of the edid property
4027 *
4028 * This function creates a new blob modeset object and assigns its id to the
4029 * connector's edid property.
4030 *
4031 * Returns:
4032 * Zero on success, errno on failure.
4033 */
f453ba04
DA		 4034int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4035 struct edid *edid)
4036{
4037 struct drm_device *dev = connector->dev;
4a1b0714 4038 int ret, size;
f453ba04 4039
4cf2b281
TW		 4040 /* ignore requests to set edid when overridden */
4041 if (connector->override_edid)
4042 return 0;
4043
f453ba04
DA		 4044 if (connector->edid_blob_ptr)
4045 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4046
4047 /* Delete edid, when there is none. */
4048 if (!edid) {
4049 connector->edid_blob_ptr = NULL;
58495563 4050 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
f453ba04
DA		 4051 return ret;
4052 }
4053
7466f4cc
AJ		 4054 size = EDID_LENGTH * (1 + edid->extensions);
4055 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4056 size, edid);
e655d122
SK		 4057 if (!connector->edid_blob_ptr)
4058 return -EINVAL;
f453ba04 4059
58495563 4060 ret = drm_object_property_set_value(&connector->base,
f453ba04
DA		 4061 dev->mode_config.edid_property,
4062 connector->edid_blob_ptr->base.id);
4063
4064 return ret;
4065}
4066EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4067
26a34815 4068static bool drm_property_change_is_valid(struct drm_property *property,
592c20ee 4069 uint64_t value)
26a34815
PZ		 4070{
4071 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4072 return false;
5ea22f24
RC		 4073
4074 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 4075 if (value < property->values[0] || value > property->values[1])
4076 return false;
4077 return true;
ebc44cf3
RC		 4078 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4079 int64_t svalue = U642I64(value);
4080 if (svalue < U642I64(property->values[0]) ||
4081 svalue > U642I64(property->values[1]))
4082 return false;
4083 return true;
5ea22f24 4084 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
49e27545 4085 int i;
592c20ee 4086 uint64_t valid_mask = 0;
49e27545
RC		 4087 for (i = 0; i < property->num_values; i++)
4088 valid_mask |= (1ULL << property->values[i]);
4089 return !(value & ~valid_mask);
5ea22f24 4090 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
c4a56750
VS		 4091 /* Only the driver knows */
4092 return true;
98f75de4
RC		 4093 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4094 struct drm_mode_object *obj;
4095 /* a zero value for an object property translates to null: */
4096 if (value == 0)
4097 return true;
4098 /*
4099 * NOTE: use _object_find() directly to bypass restriction on
4100 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4101 * object this could race against object finalization, so it
4102 * simply tells us that the object *was* valid. Which is good
4103 * enough.
4104 */
4105 obj = _object_find(property->dev, value, property->values[0]);
4106 return obj != NULL;
26a34815
PZ		 4107 } else {
4108 int i;
4109 for (i = 0; i < property->num_values; i++)
4110 if (property->values[i] == value)
4111 return true;
4112 return false;
4113 }
4114}
4115
c8e32cc1
DV		 4116/**
4117 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4118 * @dev: DRM device
4119 * @data: ioctl data
4120 * @file_priv: DRM file info
4121 *
4122 * This function sets the current value for a connectors's property. It also
4123 * calls into a driver's ->set_property callback to update the hardware state
4124 *
4125 * Called by the user via ioctl.
4126 *
4127 * Returns:
4128 * Zero on success, errno on failure.
4129 */
f453ba04
DA		 4130int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4131 void *data, struct drm_file *file_priv)
4132{
0057d8dd
PZ		 4133 struct drm_mode_connector_set_property *conn_set_prop = data;
4134 struct drm_mode_obj_set_property obj_set_prop = {
4135 .value = conn_set_prop->value,
4136 .prop_id = conn_set_prop->prop_id,
4137 .obj_id = conn_set_prop->connector_id,
4138 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4139 };
fb3b06c8 4140
0057d8dd
PZ		 4141 /* It does all the locking and checking we need */
4142 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 4143}
4144
c543188a
PZ		 4145static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4146 struct drm_property *property,
4147 uint64_t value)
4148{
4149 int ret = -EINVAL;
4150 struct drm_connector *connector = obj_to_connector(obj);
4151
4152 /* Do DPMS ourselves */
4153 if (property == connector->dev->mode_config.dpms_property) {
4154 if (connector->funcs->dpms)
4155 (*connector->funcs->dpms)(connector, (int)value);
4156 ret = 0;
4157 } else if (connector->funcs->set_property)
4158 ret = connector->funcs->set_property(connector, property, value);
4159
4160 /* store the property value if successful */
4161 if (!ret)
58495563 4162 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 4163 return ret;
4164}
4165
bffd9de0
PZ		 4166static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4167 struct drm_property *property,
4168 uint64_t value)
4169{
4170 int ret = -EINVAL;
4171 struct drm_crtc *crtc = obj_to_crtc(obj);
4172
4173 if (crtc->funcs->set_property)
4174 ret = crtc->funcs->set_property(crtc, property, value);
4175 if (!ret)
4176 drm_object_property_set_value(obj, property, value);
4177
4178 return ret;
4179}
4180
3a5f87c2
TW		 4181/**
4182 * drm_mode_plane_set_obj_prop - set the value of a property
4183 * @plane: drm plane object to set property value for
4184 * @property: property to set
4185 * @value: value the property should be set to
4186 *
4187 * This functions sets a given property on a given plane object. This function
4188 * calls the driver's ->set_property callback and changes the software state of
4189 * the property if the callback succeeds.
4190 *
4191 * Returns:
4192 * Zero on success, error code on failure.
4193 */
4194int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4195 struct drm_property *property,
4196 uint64_t value)
4d93914a
RC		 4197{
4198 int ret = -EINVAL;
3a5f87c2 4199 struct drm_mode_object *obj = &plane->base;
4d93914a
RC		 4200
4201 if (plane->funcs->set_property)
4202 ret = plane->funcs->set_property(plane, property, value);
4203 if (!ret)
4204 drm_object_property_set_value(obj, property, value);
4205
4206 return ret;
4207}
3a5f87c2 4208EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4d93914a 4209
c8e32cc1
DV		 4210/**
4211 * drm_mode_getproperty_ioctl - get the current value of a object's property
4212 * @dev: DRM device
4213 * @data: ioctl data
4214 * @file_priv: DRM file info
4215 *
4216 * This function retrieves the current value for an object's property. Compared
4217 * to the connector specific ioctl this one is extended to also work on crtc and
4218 * plane objects.
4219 *
4220 * Called by the user via ioctl.
4221 *
4222 * Returns:
4223 * Zero on success, errno on failure.
4224 */
c543188a
PZ		 4225int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4226 struct drm_file *file_priv)
4227{
4228 struct drm_mode_obj_get_properties *arg = data;
4229 struct drm_mode_object *obj;
4230 int ret = 0;
4231 int i;
4232 int copied = 0;
4233 int props_count = 0;
4234 uint32_t __user *props_ptr;
4235 uint64_t __user *prop_values_ptr;
4236
4237 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4238 return -EINVAL;
4239
84849903 4240 drm_modeset_lock_all(dev);
c543188a
PZ		 4241
4242 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4243 if (!obj) {
f27657f2 4244 ret = -ENOENT;
c543188a
PZ		 4245 goto out;
4246 }
4247 if (!obj->properties) {
4248 ret = -EINVAL;
4249 goto out;
4250 }
4251
7f88a9be 4252 props_count = obj->properties->count;
c543188a
PZ		 4253
4254 /* This ioctl is called twice, once to determine how much space is
4255 * needed, and the 2nd time to fill it. */
4256 if ((arg->count_props >= props_count) && props_count) {
4257 copied = 0;
4258 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4259 prop_values_ptr = (uint64_t __user *)(unsigned long)
4260 (arg->prop_values_ptr);
4261 for (i = 0; i < props_count; i++) {
4262 if (put_user(obj->properties->ids[i],
4263 props_ptr + copied)) {
4264 ret = -EFAULT;
4265 goto out;
4266 }
4267 if (put_user(obj->properties->values[i],
4268 prop_values_ptr + copied)) {
4269 ret = -EFAULT;
4270 goto out;
4271 }
4272 copied++;
4273 }
4274 }
4275 arg->count_props = props_count;
4276out:
84849903 4277 drm_modeset_unlock_all(dev);
c543188a
PZ		 4278 return ret;
4279}
4280
c8e32cc1
DV		 4281/**
4282 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4283 * @dev: DRM device
4284 * @data: ioctl data
4285 * @file_priv: DRM file info
4286 *
4287 * This function sets the current value for an object's property. It also calls
4288 * into a driver's ->set_property callback to update the hardware state.
4289 * Compared to the connector specific ioctl this one is extended to also work on
4290 * crtc and plane objects.
4291 *
4292 * Called by the user via ioctl.
4293 *
4294 * Returns:
4295 * Zero on success, errno on failure.
4296 */
c543188a
PZ		 4297int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4298 struct drm_file *file_priv)
4299{
4300 struct drm_mode_obj_set_property *arg = data;
4301 struct drm_mode_object *arg_obj;
4302 struct drm_mode_object *prop_obj;
4303 struct drm_property *property;
4304 int ret = -EINVAL;
4305 int i;
4306
4307 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4308 return -EINVAL;
4309
84849903 4310 drm_modeset_lock_all(dev);
c543188a
PZ		 4311
4312 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 4313 if (!arg_obj) {
4314 ret = -ENOENT;
c543188a 4315 goto out;
f27657f2 4316 }
c543188a
PZ		 4317 if (!arg_obj->properties)
4318 goto out;
4319
7f88a9be 4320 for (i = 0; i < arg_obj->properties->count; i++)
c543188a
PZ		 4321 if (arg_obj->properties->ids[i] == arg->prop_id)
4322 break;
4323
7f88a9be 4324 if (i == arg_obj->properties->count)
c543188a
PZ		 4325 goto out;
4326
4327 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4328 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 4329 if (!prop_obj) {
4330 ret = -ENOENT;
c543188a 4331 goto out;
f27657f2 4332 }
c543188a
PZ		 4333 property = obj_to_property(prop_obj);
4334
4335 if (!drm_property_change_is_valid(property, arg->value))
4336 goto out;
4337
4338 switch (arg_obj->type) {
4339 case DRM_MODE_OBJECT_CONNECTOR:
4340 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4341 arg->value);
4342 break;
bffd9de0
PZ		 4343 case DRM_MODE_OBJECT_CRTC:
4344 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4345 break;
4d93914a 4346 case DRM_MODE_OBJECT_PLANE:
3a5f87c2
TW		 4347 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4348 property, arg->value);
4d93914a 4349 break;
c543188a
PZ		 4350 }
4351
4352out:
84849903 4353 drm_modeset_unlock_all(dev);
c543188a
PZ		 4354 return ret;
4355}
4356
c8e32cc1
DV		 4357/**
4358 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4359 * @connector: connector to attach
4360 * @encoder: encoder to attach @connector to
4361 *
4362 * This function links up a connector to an encoder. Note that the routing
4363 * restrictions between encoders and crtcs are exposed to userspace through the
4364 * possible_clones and possible_crtcs bitmasks.
4365 *
4366 * Returns:
4367 * Zero on success, errno on failure.
4368 */
f453ba04
DA		 4369int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4370 struct drm_encoder *encoder)
4371{
4372 int i;
4373
4374 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4375 if (connector->encoder_ids[i] == 0) {
4376 connector->encoder_ids[i] = encoder->base.id;
4377 return 0;
4378 }
4379 }
4380 return -ENOMEM;
4381}
4382EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4383
c8e32cc1
DV		 4384/**
4385 * drm_mode_crtc_set_gamma_size - set the gamma table size
4386 * @crtc: CRTC to set the gamma table size for
4387 * @gamma_size: size of the gamma table
4388 *
4389 * Drivers which support gamma tables should set this to the supported gamma
4390 * table size when initializing the CRTC. Currently the drm core only supports a
4391 * fixed gamma table size.
4392 *
4393 * Returns:
4394 * Zero on success, errno on failure.
4395 */
4cae5b84 4396int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 4397 int gamma_size)
f453ba04
DA		 4398{
4399 crtc->gamma_size = gamma_size;
4400
4401 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4402 if (!crtc->gamma_store) {
4403 crtc->gamma_size = 0;
4cae5b84 4404 return -ENOMEM;
f453ba04
DA		 4405 }
4406
4cae5b84 4407 return 0;
f453ba04
DA		 4408}
4409EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4410
c8e32cc1
DV		 4411/**
4412 * drm_mode_gamma_set_ioctl - set the gamma table
4413 * @dev: DRM device
4414 * @data: ioctl data
4415 * @file_priv: DRM file info
4416 *
4417 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4418 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4419 *
4420 * Called by the user via ioctl.
4421 *
4422 * Returns:
4423 * Zero on success, errno on failure.
4424 */
f453ba04
DA		 4425int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4426 void *data, struct drm_file *file_priv)
4427{
4428 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4429 struct drm_crtc *crtc;
4430 void *r_base, *g_base, *b_base;
4431 int size;
4432 int ret = 0;
4433
fb3b06c8
DA		 4434 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4435 return -EINVAL;
4436
84849903 4437 drm_modeset_lock_all(dev);
a2b34e22
RC		 4438 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4439 if (!crtc) {
f27657f2 4440 ret = -ENOENT;
f453ba04
DA		 4441 goto out;
4442 }
f453ba04 4443
ebe0f244
LP		 4444 if (crtc->funcs->gamma_set == NULL) {
4445 ret = -ENOSYS;
4446 goto out;
4447 }
4448
f453ba04
DA		 4449 /* memcpy into gamma store */
4450 if (crtc_lut->gamma_size != crtc->gamma_size) {
4451 ret = -EINVAL;
4452 goto out;
4453 }
4454
4455 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4456 r_base = crtc->gamma_store;
4457 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4458 ret = -EFAULT;
4459 goto out;
4460 }
4461
4462 g_base = r_base + size;
4463 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4464 ret = -EFAULT;
4465 goto out;
4466 }
4467
4468 b_base = g_base + size;
4469 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4470 ret = -EFAULT;
4471 goto out;
4472 }
4473
7203425a 4474 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 4475
4476out:
84849903 4477 drm_modeset_unlock_all(dev);
f453ba04
DA		 4478 return ret;
4479
4480}
4481
c8e32cc1
DV		 4482/**
4483 * drm_mode_gamma_get_ioctl - get the gamma table
4484 * @dev: DRM device
4485 * @data: ioctl data
4486 * @file_priv: DRM file info
4487 *
4488 * Copy the current gamma table into the storage provided. This also provides
4489 * the gamma table size the driver expects, which can be used to size the
4490 * allocated storage.
4491 *
4492 * Called by the user via ioctl.
4493 *
4494 * Returns:
4495 * Zero on success, errno on failure.
4496 */
f453ba04
DA		 4497int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4498 void *data, struct drm_file *file_priv)
4499{
4500 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4501 struct drm_crtc *crtc;
4502 void *r_base, *g_base, *b_base;
4503 int size;
4504 int ret = 0;
4505
fb3b06c8
DA		 4506 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4507 return -EINVAL;
4508
84849903 4509 drm_modeset_lock_all(dev);
a2b34e22
RC		 4510 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4511 if (!crtc) {
f27657f2 4512 ret = -ENOENT;
f453ba04
DA		 4513 goto out;
4514 }
f453ba04
DA		 4515
4516 /* memcpy into gamma store */
4517 if (crtc_lut->gamma_size != crtc->gamma_size) {
4518 ret = -EINVAL;
4519 goto out;
4520 }
4521
4522 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4523 r_base = crtc->gamma_store;
4524 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4525 ret = -EFAULT;
4526 goto out;
4527 }
4528
4529 g_base = r_base + size;
4530 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4531 ret = -EFAULT;
4532 goto out;
4533 }
4534
4535 b_base = g_base + size;
4536 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4537 ret = -EFAULT;
4538 goto out;
4539 }
4540out:
84849903 4541 drm_modeset_unlock_all(dev);
f453ba04
DA		 4542 return ret;
4543}
d91d8a3f 4544
c8e32cc1
DV		 4545/**
4546 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4547 * @dev: DRM device
4548 * @data: ioctl data
4549 * @file_priv: DRM file info
4550 *
4551 * This schedules an asynchronous update on a given CRTC, called page flip.
4552 * Optionally a drm event is generated to signal the completion of the event.
4553 * Generic drivers cannot assume that a pageflip with changed framebuffer
4554 * properties (including driver specific metadata like tiling layout) will work,
4555 * but some drivers support e.g. pixel format changes through the pageflip
4556 * ioctl.
4557 *
4558 * Called by the user via ioctl.
4559 *
4560 * Returns:
4561 * Zero on success, errno on failure.
4562 */
d91d8a3f
KH		 4563int drm_mode_page_flip_ioctl(struct drm_device *dev,
4564 void *data, struct drm_file *file_priv)
4565{
4566 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 4567 struct drm_crtc *crtc;
3d30a59b 4568 struct drm_framebuffer *fb = NULL;
d91d8a3f
KH		 4569 struct drm_pending_vblank_event *e = NULL;
4570 unsigned long flags;
4571 int ret = -EINVAL;
4572
4573 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4574 page_flip->reserved != 0)
4575 return -EINVAL;
4576
62f2104f
KP		 4577 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4578 return -EINVAL;
4579
a2b34e22
RC		 4580 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4581 if (!crtc)
f27657f2 4582 return -ENOENT;
d91d8a3f 4583
d059f652 4584 drm_modeset_lock_crtc(crtc);
f4510a27 4585 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 4586 /* The framebuffer is currently unbound, presumably
4587 * due to a hotplug event, that userspace has not
4588 * yet discovered.
4589 */
4590 ret = -EBUSY;
4591 goto out;
4592 }
4593
d91d8a3f
KH		 4594 if (crtc->funcs->page_flip == NULL)
4595 goto out;
4596
786b99ed 4597 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 4598 if (!fb) {
4599 ret = -ENOENT;
d91d8a3f 4600 goto out;
37c4e705 4601 }
d91d8a3f 4602
c11e9283
DL		 4603 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4604 if (ret)
5f61bb42 4605 goto out;
5f61bb42 4606
f4510a27 4607 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 4608 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4609 ret = -EINVAL;
4610 goto out;
4611 }
4612
d91d8a3f
KH		 4613 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4614 ret = -ENOMEM;
4615 spin_lock_irqsave(&dev->event_lock, flags);
4616 if (file_priv->event_space < sizeof e->event) {
4617 spin_unlock_irqrestore(&dev->event_lock, flags);
4618 goto out;
4619 }
4620 file_priv->event_space -= sizeof e->event;
4621 spin_unlock_irqrestore(&dev->event_lock, flags);
4622
4623 e = kzalloc(sizeof *e, GFP_KERNEL);
4624 if (e == NULL) {
4625 spin_lock_irqsave(&dev->event_lock, flags);
4626 file_priv->event_space += sizeof e->event;
4627 spin_unlock_irqrestore(&dev->event_lock, flags);
4628 goto out;
4629 }
4630
7bd4d7be 4631 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
d91d8a3f
KH		 4632 e->event.base.length = sizeof e->event;
4633 e->event.user_data = page_flip->user_data;
4634 e->base.event = &e->event.base;
4635 e->base.file_priv = file_priv;
4636 e->base.destroy =
4637 (void (*) (struct drm_pending_event *)) kfree;
4638 }
4639
3d30a59b 4640 crtc->primary->old_fb = crtc->primary->fb;
ed8d1975 4641 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 4642 if (ret) {
aef6a7ee
JS		 4643 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4644 spin_lock_irqsave(&dev->event_lock, flags);
4645 file_priv->event_space += sizeof e->event;
4646 spin_unlock_irqrestore(&dev->event_lock, flags);
4647 kfree(e);
4648 }
b0d12325 4649 /* Keep the old fb, don't unref it. */
3d30a59b 4650 crtc->primary->old_fb = NULL;
b0d12325 4651 } else {
8cf1e981
TR		 4652 /*
4653 * Warn if the driver hasn't properly updated the crtc->fb
4654 * field to reflect that the new framebuffer is now used.
4655 * Failing to do so will screw with the reference counting
4656 * on framebuffers.
4657 */
f4510a27 4658 WARN_ON(crtc->primary->fb != fb);
b0d12325
DV		 4659 /* Unref only the old framebuffer. */
4660 fb = NULL;
d91d8a3f
KH		 4661 }
4662
4663out:
b0d12325
DV		 4664 if (fb)
4665 drm_framebuffer_unreference(fb);
3d30a59b
DV		 4666 if (crtc->primary->old_fb)
4667 drm_framebuffer_unreference(crtc->primary->old_fb);
4668 crtc->primary->old_fb = NULL;
d059f652 4669 drm_modeset_unlock_crtc(crtc);
b4d5e7d1 4670
d91d8a3f
KH		 4671 return ret;
4672}
eb033556 4673
c8e32cc1
DV		 4674/**
4675 * drm_mode_config_reset - call ->reset callbacks
4676 * @dev: drm device
4677 *
4678 * This functions calls all the crtc's, encoder's and connector's ->reset
4679 * callback. Drivers can use this in e.g. their driver load or resume code to
4680 * reset hardware and software state.
4681 */
eb033556
CW		 4682void drm_mode_config_reset(struct drm_device *dev)
4683{
4684 struct drm_crtc *crtc;
2a0d7cfd 4685 struct drm_plane *plane;
eb033556
CW		 4686 struct drm_encoder *encoder;
4687 struct drm_connector *connector;
4688
2a0d7cfd
DV		 4689 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4690 if (plane->funcs->reset)
4691 plane->funcs->reset(plane);
4692
eb033556
CW		 4693 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4694 if (crtc->funcs->reset)
4695 crtc->funcs->reset(crtc);
4696
4697 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4698 if (encoder->funcs->reset)
4699 encoder->funcs->reset(encoder);
4700
5e2cb2f6
DV		 4701 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4702 connector->status = connector_status_unknown;
4703
eb033556
CW		 4704 if (connector->funcs->reset)
4705 connector->funcs->reset(connector);
5e2cb2f6 4706 }
eb033556
CW		 4707}
4708EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 4709
c8e32cc1
DV		 4710/**
4711 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4712 * @dev: DRM device
4713 * @data: ioctl data
4714 * @file_priv: DRM file info
4715 *
4716 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4717 * TTM or something else entirely) and returns the resulting buffer handle. This
4718 * handle can then be wrapped up into a framebuffer modeset object.
4719 *
4720 * Note that userspace is not allowed to use such objects for render
4721 * acceleration - drivers must create their own private ioctls for such a use
4722 * case.
4723 *
4724 * Called by the user via ioctl.
4725 *
4726 * Returns:
4727 * Zero on success, errno on failure.
4728 */
ff72145b
DA		 4729int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4730 void *data, struct drm_file *file_priv)
4731{
4732 struct drm_mode_create_dumb *args = data;
b28cd41f 4733 u32 cpp, stride, size;
ff72145b
DA		 4734
4735 if (!dev->driver->dumb_create)
4736 return -ENOSYS;
b28cd41f
DH		 4737 if (!args->width || !args->height || !args->bpp)
4738 return -EINVAL;
4739
4740 /* overflow checks for 32bit size calculations */
00e72089 4741 /* NOTE: DIV_ROUND_UP() can overflow */
b28cd41f 4742 cpp = DIV_ROUND_UP(args->bpp, 8);
00e72089 4743 if (!cpp || cpp > 0xffffffffU / args->width)
b28cd41f
DH		 4744 return -EINVAL;
4745 stride = cpp * args->width;
4746 if (args->height > 0xffffffffU / stride)
4747 return -EINVAL;
4748
4749 /* test for wrap-around */
4750 size = args->height * stride;
4751 if (PAGE_ALIGN(size) == 0)
4752 return -EINVAL;
4753
ff72145b
DA		 4754 return dev->driver->dumb_create(file_priv, dev, args);
4755}
4756
c8e32cc1
DV		 4757/**
4758 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4759 * @dev: DRM device
4760 * @data: ioctl data
4761 * @file_priv: DRM file info
4762 *
4763 * Allocate an offset in the drm device node's address space to be able to
4764 * memory map a dumb buffer.
4765 *
4766 * Called by the user via ioctl.
4767 *
4768 * Returns:
4769 * Zero on success, errno on failure.
4770 */
ff72145b
DA		 4771int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4772 void *data, struct drm_file *file_priv)
4773{
4774 struct drm_mode_map_dumb *args = data;
4775
4776 /* call driver ioctl to get mmap offset */
4777 if (!dev->driver->dumb_map_offset)
4778 return -ENOSYS;
4779
4780 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4781}
4782
c8e32cc1
DV		 4783/**
4784 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4785 * @dev: DRM device
4786 * @data: ioctl data
4787 * @file_priv: DRM file info
4788 *
4789 * This destroys the userspace handle for the given dumb backing storage buffer.
4790 * Since buffer objects must be reference counted in the kernel a buffer object
4791 * won't be immediately freed if a framebuffer modeset object still uses it.
4792 *
4793 * Called by the user via ioctl.
4794 *
4795 * Returns:
4796 * Zero on success, errno on failure.
4797 */
ff72145b
DA		 4798int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4799 void *data, struct drm_file *file_priv)
4800{
4801 struct drm_mode_destroy_dumb *args = data;
4802
4803 if (!dev->driver->dumb_destroy)
4804 return -ENOSYS;
4805
4806 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4807}
248dbc23 4808
c8e32cc1
DV		 4809/**
4810 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4811 * @format: pixel format (DRM_FORMAT_*)
4812 * @depth: storage for the depth value
4813 * @bpp: storage for the bpp value
4814 *
4815 * This only supports RGB formats here for compat with code that doesn't use
4816 * pixel formats directly yet.
248dbc23
DA		 4817 */
4818void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4819 int *bpp)
4820{
4821 switch (format) {
c51a6bc5 4822 case DRM_FORMAT_C8:
04b3924d
VS		 4823 case DRM_FORMAT_RGB332:
4824 case DRM_FORMAT_BGR233:
248dbc23
DA		 4825 *depth = 8;
4826 *bpp = 8;
4827 break;
04b3924d
VS		 4828 case DRM_FORMAT_XRGB1555:
4829 case DRM_FORMAT_XBGR1555:
4830 case DRM_FORMAT_RGBX5551:
4831 case DRM_FORMAT_BGRX5551:
4832 case DRM_FORMAT_ARGB1555:
4833 case DRM_FORMAT_ABGR1555:
4834 case DRM_FORMAT_RGBA5551:
4835 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 4836 *depth = 15;
4837 *bpp = 16;
4838 break;
04b3924d
VS		 4839 case DRM_FORMAT_RGB565:
4840 case DRM_FORMAT_BGR565:
248dbc23
DA		 4841 *depth = 16;
4842 *bpp = 16;
4843 break;
04b3924d
VS		 4844 case DRM_FORMAT_RGB888:
4845 case DRM_FORMAT_BGR888:
4846 *depth = 24;
4847 *bpp = 24;
4848 break;
4849 case DRM_FORMAT_XRGB8888:
4850 case DRM_FORMAT_XBGR8888:
4851 case DRM_FORMAT_RGBX8888:
4852 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 4853 *depth = 24;
4854 *bpp = 32;
4855 break;
04b3924d
VS		 4856 case DRM_FORMAT_XRGB2101010:
4857 case DRM_FORMAT_XBGR2101010:
4858 case DRM_FORMAT_RGBX1010102:
4859 case DRM_FORMAT_BGRX1010102:
4860 case DRM_FORMAT_ARGB2101010:
4861 case DRM_FORMAT_ABGR2101010:
4862 case DRM_FORMAT_RGBA1010102:
4863 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 4864 *depth = 30;
4865 *bpp = 32;
4866 break;
04b3924d
VS		 4867 case DRM_FORMAT_ARGB8888:
4868 case DRM_FORMAT_ABGR8888:
4869 case DRM_FORMAT_RGBA8888:
4870 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 4871 *depth = 32;
4872 *bpp = 32;
4873 break;
4874 default:
23c453a4
VS		 4875 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4876 drm_get_format_name(format));
248dbc23
DA		 4877 *depth = 0;
4878 *bpp = 0;
4879 break;
4880 }
4881}
4882EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 4883
4884/**
4885 * drm_format_num_planes - get the number of planes for format
4886 * @format: pixel format (DRM_FORMAT_*)
4887 *
c8e32cc1 4888 * Returns:
141670e9
VS		 4889 * The number of planes used by the specified pixel format.
4890 */
4891int drm_format_num_planes(uint32_t format)
4892{
4893 switch (format) {
4894 case DRM_FORMAT_YUV410:
4895 case DRM_FORMAT_YVU410:
4896 case DRM_FORMAT_YUV411:
4897 case DRM_FORMAT_YVU411:
4898 case DRM_FORMAT_YUV420:
4899 case DRM_FORMAT_YVU420:
4900 case DRM_FORMAT_YUV422:
4901 case DRM_FORMAT_YVU422:
4902 case DRM_FORMAT_YUV444:
4903 case DRM_FORMAT_YVU444:
4904 return 3;
4905 case DRM_FORMAT_NV12:
4906 case DRM_FORMAT_NV21:
4907 case DRM_FORMAT_NV16:
4908 case DRM_FORMAT_NV61:
ba623f6a
LP		 4909 case DRM_FORMAT_NV24:
4910 case DRM_FORMAT_NV42:
141670e9
VS		 4911 return 2;
4912 default:
4913 return 1;
4914 }
4915}
4916EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 4917
4918/**
4919 * drm_format_plane_cpp - determine the bytes per pixel value
4920 * @format: pixel format (DRM_FORMAT_*)
4921 * @plane: plane index
4922 *
c8e32cc1 4923 * Returns:
5a86bd55
VS		 4924 * The bytes per pixel value for the specified plane.
4925 */
4926int drm_format_plane_cpp(uint32_t format, int plane)
4927{
4928 unsigned int depth;
4929 int bpp;
4930
4931 if (plane >= drm_format_num_planes(format))
4932 return 0;
4933
4934 switch (format) {
4935 case DRM_FORMAT_YUYV:
4936 case DRM_FORMAT_YVYU:
4937 case DRM_FORMAT_UYVY:
4938 case DRM_FORMAT_VYUY:
4939 return 2;
4940 case DRM_FORMAT_NV12:
4941 case DRM_FORMAT_NV21:
4942 case DRM_FORMAT_NV16:
4943 case DRM_FORMAT_NV61:
ba623f6a
LP		 4944 case DRM_FORMAT_NV24:
4945 case DRM_FORMAT_NV42:
5a86bd55
VS		 4946 return plane ? 2 : 1;
4947 case DRM_FORMAT_YUV410:
4948 case DRM_FORMAT_YVU410:
4949 case DRM_FORMAT_YUV411:
4950 case DRM_FORMAT_YVU411:
4951 case DRM_FORMAT_YUV420:
4952 case DRM_FORMAT_YVU420:
4953 case DRM_FORMAT_YUV422:
4954 case DRM_FORMAT_YVU422:
4955 case DRM_FORMAT_YUV444:
4956 case DRM_FORMAT_YVU444:
4957 return 1;
4958 default:
4959 drm_fb_get_bpp_depth(format, &depth, &bpp);
4960 return bpp >> 3;
4961 }
4962}
4963EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 4964
4965/**
4966 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4967 * @format: pixel format (DRM_FORMAT_*)
4968 *
c8e32cc1 4969 * Returns:
01b68b04
VS		 4970 * The horizontal chroma subsampling factor for the
4971 * specified pixel format.
4972 */
4973int drm_format_horz_chroma_subsampling(uint32_t format)
4974{
4975 switch (format) {
4976 case DRM_FORMAT_YUV411:
4977 case DRM_FORMAT_YVU411:
4978 case DRM_FORMAT_YUV410:
4979 case DRM_FORMAT_YVU410:
4980 return 4;
4981 case DRM_FORMAT_YUYV:
4982 case DRM_FORMAT_YVYU:
4983 case DRM_FORMAT_UYVY:
4984 case DRM_FORMAT_VYUY:
4985 case DRM_FORMAT_NV12:
4986 case DRM_FORMAT_NV21:
4987 case DRM_FORMAT_NV16:
4988 case DRM_FORMAT_NV61:
4989 case DRM_FORMAT_YUV422:
4990 case DRM_FORMAT_YVU422:
4991 case DRM_FORMAT_YUV420:
4992 case DRM_FORMAT_YVU420:
4993 return 2;
4994 default:
4995 return 1;
4996 }
4997}
4998EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4999
5000/**
5001 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5002 * @format: pixel format (DRM_FORMAT_*)
5003 *
c8e32cc1 5004 * Returns:
01b68b04
VS		 5005 * The vertical chroma subsampling factor for the
5006 * specified pixel format.
5007 */
5008int drm_format_vert_chroma_subsampling(uint32_t format)
5009{
5010 switch (format) {
5011 case DRM_FORMAT_YUV410:
5012 case DRM_FORMAT_YVU410:
5013 return 4;
5014 case DRM_FORMAT_YUV420:
5015 case DRM_FORMAT_YVU420:
5016 case DRM_FORMAT_NV12:
5017 case DRM_FORMAT_NV21:
5018 return 2;
5019 default:
5020 return 1;
5021 }
5022}
5023EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3 5024
3c9855f6
VS		 5025/**
5026 * drm_rotation_simplify() - Try to simplify the rotation
5027 * @rotation: Rotation to be simplified
5028 * @supported_rotations: Supported rotations
5029 *
5030 * Attempt to simplify the rotation to a form that is supported.
5031 * Eg. if the hardware supports everything except DRM_REFLECT_X
5032 * one could call this function like this:
5033 *
5034 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5035 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5036 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5037 *
5038 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5039 * transforms the hardware supports, this function may not
5040 * be able to produce a supported transform, so the caller should
5041 * check the result afterwards.
5042 */
5043unsigned int drm_rotation_simplify(unsigned int rotation,
5044 unsigned int supported_rotations)
5045{
5046 if (rotation & ~supported_rotations) {
5047 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5048 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5049 }
5050
5051 return rotation;
5052}
5053EXPORT_SYMBOL(drm_rotation_simplify);
5054
87d24fc3
LP		 5055/**
5056 * drm_mode_config_init - initialize DRM mode_configuration structure
5057 * @dev: DRM device
5058 *
5059 * Initialize @dev's mode_config structure, used for tracking the graphics
5060 * configuration of @dev.
5061 *
5062 * Since this initializes the modeset locks, no locking is possible. Which is no
5063 * problem, since this should happen single threaded at init time. It is the
5064 * driver's problem to ensure this guarantee.
5065 *
5066 */
5067void drm_mode_config_init(struct drm_device *dev)
5068{
5069 mutex_init(&dev->mode_config.mutex);
51fd371b 5070 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5071 mutex_init(&dev->mode_config.idr_mutex);
5072 mutex_init(&dev->mode_config.fb_lock);
5073 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5074 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5075 INIT_LIST_HEAD(&dev->mode_config.connector_list);
3b336ec4 5076 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
87d24fc3
LP		 5077 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5078 INIT_LIST_HEAD(&dev->mode_config.property_list);
5079 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5080 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5081 idr_init(&dev->mode_config.crtc_idr);
5082
5083 drm_modeset_lock_all(dev);
5084 drm_mode_create_standard_connector_properties(dev);
9922ab5a 5085 drm_mode_create_standard_plane_properties(dev);
87d24fc3
LP		 5086 drm_modeset_unlock_all(dev);
5087
5088 /* Just to be sure */
5089 dev->mode_config.num_fb = 0;
5090 dev->mode_config.num_connector = 0;
5091 dev->mode_config.num_crtc = 0;
5092 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 5093 dev->mode_config.num_overlay_plane = 0;
5094 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 5095}
5096EXPORT_SYMBOL(drm_mode_config_init);
5097
5098/**
5099 * drm_mode_config_cleanup - free up DRM mode_config info
5100 * @dev: DRM device
5101 *
5102 * Free up all the connectors and CRTCs associated with this DRM device, then
5103 * free up the framebuffers and associated buffer objects.
5104 *
5105 * Note that since this /should/ happen single-threaded at driver/device
5106 * teardown time, no locking is required. It's the driver's job to ensure that
5107 * this guarantee actually holds true.
5108 *
5109 * FIXME: cleanup any dangling user buffer objects too
5110 */
5111void drm_mode_config_cleanup(struct drm_device *dev)
5112{
5113 struct drm_connector *connector, *ot;
5114 struct drm_crtc *crtc, *ct;
5115 struct drm_encoder *encoder, *enct;
3b336ec4 5116 struct drm_bridge *bridge, *brt;
87d24fc3
LP		 5117 struct drm_framebuffer *fb, *fbt;
5118 struct drm_property *property, *pt;
5119 struct drm_property_blob *blob, *bt;
5120 struct drm_plane *plane, *plt;
5121
5122 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5123 head) {
5124 encoder->funcs->destroy(encoder);
5125 }
5126
3b336ec4
SP		 5127 list_for_each_entry_safe(bridge, brt,
5128 &dev->mode_config.bridge_list, head) {
5129 bridge->funcs->destroy(bridge);
5130 }
5131
87d24fc3
LP		 5132 list_for_each_entry_safe(connector, ot,
5133 &dev->mode_config.connector_list, head) {
5134 connector->funcs->destroy(connector);
5135 }
5136
5137 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5138 head) {
5139 drm_property_destroy(dev, property);
5140 }
5141
5142 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5143 head) {
5144 drm_property_destroy_blob(dev, blob);
5145 }
5146
5147 /*
5148 * Single-threaded teardown context, so it's not required to grab the
5149 * fb_lock to protect against concurrent fb_list access. Contrary, it
5150 * would actually deadlock with the drm_framebuffer_cleanup function.
5151 *
5152 * Also, if there are any framebuffers left, that's a driver leak now,
5153 * so politely WARN about this.
5154 */
5155 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5156 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5157 drm_framebuffer_remove(fb);
5158 }
5159
5160 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5161 head) {
5162 plane->funcs->destroy(plane);
5163 }
5164
5165 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5166 crtc->funcs->destroy(crtc);
5167 }
5168
5169 idr_destroy(&dev->mode_config.crtc_idr);
51fd371b 5170 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5171}
5172EXPORT_SYMBOL(drm_mode_config_cleanup);
c1df5f3c
VS		 5173
5174struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5175 unsigned int supported_rotations)
5176{
5177 static const struct drm_prop_enum_list props[] = {
5178 { DRM_ROTATE_0, "rotate-0" },
5179 { DRM_ROTATE_90, "rotate-90" },
5180 { DRM_ROTATE_180, "rotate-180" },
5181 { DRM_ROTATE_270, "rotate-270" },
5182 { DRM_REFLECT_X, "reflect-x" },
5183 { DRM_REFLECT_Y, "reflect-y" },
5184 };
5185
5186 return drm_property_create_bitmask(dev, 0, "rotation",
5187 props, ARRAY_SIZE(props),
5188 supported_rotations);
5189}
5190EXPORT_SYMBOL(drm_mode_create_rotation_property);
Linux kernel - Deliverables
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