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drm: spiff out FB refcnting traces
[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>
f453ba04 40
8bd441b2
DV		 41#include "drm_crtc_internal.h"
42
84849903
DV		 43/**
44 * drm_modeset_lock_all - take all modeset locks
45 * @dev: drm device
46 *
47 * This function takes all modeset locks, suitable where a more fine-grained
c8e32cc1
DV		 48 * scheme isn't (yet) implemented. Locks must be dropped with
49 * drm_modeset_unlock_all.
84849903
DV		 50 */
51void drm_modeset_lock_all(struct drm_device *dev)
52{
29494c17
DV		 53 struct drm_crtc *crtc;
54
84849903 55 mutex_lock(&dev->mode_config.mutex);
29494c17
DV		 56
57 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
58 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
84849903
DV		 59}
60EXPORT_SYMBOL(drm_modeset_lock_all);
61
62/**
63 * drm_modeset_unlock_all - drop all modeset locks
64 * @dev: device
c8e32cc1
DV		 65 *
66 * This function drop all modeset locks taken by drm_modeset_lock_all.
84849903
DV		 67 */
68void drm_modeset_unlock_all(struct drm_device *dev)
69{
29494c17
DV		 70 struct drm_crtc *crtc;
71
72 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
73 mutex_unlock(&crtc->mutex);
74
84849903
DV		 75 mutex_unlock(&dev->mode_config.mutex);
76}
77EXPORT_SYMBOL(drm_modeset_unlock_all);
78
6aed8ec3
DV		 79/**
80 * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked
81 * @dev: device
c8e32cc1
DV		 82 *
83 * Useful as a debug assert.
6aed8ec3
DV		 84 */
85void drm_warn_on_modeset_not_all_locked(struct drm_device *dev)
86{
87 struct drm_crtc *crtc;
88
a9b054e8
DV		 89 /* Locking is currently fubar in the panic handler. */
90 if (oops_in_progress)
91 return;
92
6aed8ec3
DV		 93 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
94 WARN_ON(!mutex_is_locked(&crtc->mutex));
95
96 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
97}
98EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
99
f453ba04
DA		 100/* Avoid boilerplate. I'm tired of typing. */
101#define DRM_ENUM_NAME_FN(fnname, list) \
d20d3174 102 const char *fnname(int val) \
f453ba04
DA		 103 { \
104 int i; \
105 for (i = 0; i < ARRAY_SIZE(list); i++) { \
106 if (list[i].type == val) \
107 return list[i].name; \
108 } \
109 return "(unknown)"; \
110 }
111
112/*
113 * Global properties
114 */
d20d3174 115static const struct drm_prop_enum_list drm_dpms_enum_list[] =
f453ba04
DA		 116{ { DRM_MODE_DPMS_ON, "On" },
117 { DRM_MODE_DPMS_STANDBY, "Standby" },
118 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
119 { DRM_MODE_DPMS_OFF, "Off" }
120};
121
122DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
123
9922ab5a
RC		 124static const struct drm_prop_enum_list drm_plane_type_enum_list[] =
125{
126 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
127 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
128 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
129};
130
f453ba04
DA		 131/*
132 * Optional properties
133 */
d20d3174 134static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
f453ba04 135{
53bd8389
JB		 136 { DRM_MODE_SCALE_NONE, "None" },
137 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
138 { DRM_MODE_SCALE_CENTER, "Center" },
139 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 140};
141
f453ba04
DA		 142/*
143 * Non-global properties, but "required" for certain connectors.
144 */
d20d3174 145static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
f453ba04
DA		 146{
147 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
148 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
149 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
150};
151
152DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
153
d20d3174 154static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
f453ba04
DA		 155{
156 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
157 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
158 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
159};
160
161DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
162 drm_dvi_i_subconnector_enum_list)
163
d20d3174 164static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
f453ba04
DA		 165{
166 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
167 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
168 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
169 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 170 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 171};
172
173DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
174
d20d3174 175static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
f453ba04
DA		 176{
177 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
178 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
179 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
180 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 181 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 182};
183
184DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
185 drm_tv_subconnector_enum_list)
186
d20d3174 187static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
884840aa
JB		 188 { DRM_MODE_DIRTY_OFF, "Off" },
189 { DRM_MODE_DIRTY_ON, "On" },
190 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
191};
192
f453ba04
DA		 193struct drm_conn_prop_enum_list {
194 int type;
d20d3174 195 const char *name;
b21e3afe 196 struct ida ida;
f453ba04
DA		 197};
198
199/*
200 * Connector and encoder types.
201 */
202static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
b21e3afe
IM		 203{ { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
204 { DRM_MODE_CONNECTOR_VGA, "VGA" },
205 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
206 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
207 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
208 { DRM_MODE_CONNECTOR_Composite, "Composite" },
209 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
210 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
211 { DRM_MODE_CONNECTOR_Component, "Component" },
212 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
213 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
214 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
215 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
216 { DRM_MODE_CONNECTOR_TV, "TV" },
217 { DRM_MODE_CONNECTOR_eDP, "eDP" },
218 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
b8923273 219 { DRM_MODE_CONNECTOR_DSI, "DSI" },
f453ba04
DA		 220};
221
d20d3174 222static const struct drm_prop_enum_list drm_encoder_enum_list[] =
f453ba04
DA		 223{ { DRM_MODE_ENCODER_NONE, "None" },
224 { DRM_MODE_ENCODER_DAC, "DAC" },
225 { DRM_MODE_ENCODER_TMDS, "TMDS" },
226 { DRM_MODE_ENCODER_LVDS, "LVDS" },
227 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 228 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
b8923273 229 { DRM_MODE_ENCODER_DSI, "DSI" },
182407a6 230 { DRM_MODE_ENCODER_DPMST, "DP MST" },
f453ba04
DA		 231};
232
ac1bb36c
JB		 233static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
234{
235 { SubPixelUnknown, "Unknown" },
236 { SubPixelHorizontalRGB, "Horizontal RGB" },
237 { SubPixelHorizontalBGR, "Horizontal BGR" },
238 { SubPixelVerticalRGB, "Vertical RGB" },
239 { SubPixelVerticalBGR, "Vertical BGR" },
240 { SubPixelNone, "None" },
241};
242
b21e3afe
IM		 243void drm_connector_ida_init(void)
244{
245 int i;
246
247 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
248 ida_init(&drm_connector_enum_list[i].ida);
249}
250
251void drm_connector_ida_destroy(void)
252{
253 int i;
254
255 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
256 ida_destroy(&drm_connector_enum_list[i].ida);
257}
258
c8e32cc1
DV		 259/**
260 * drm_get_connector_status_name - return a string for connector status
261 * @status: connector status to compute name of
262 *
263 * In contrast to the other drm_get_*_name functions this one here returns a
264 * const pointer and hence is threadsafe.
265 */
d20d3174 266const char *drm_get_connector_status_name(enum drm_connector_status status)
f453ba04
DA		 267{
268 if (status == connector_status_connected)
269 return "connected";
270 else if (status == connector_status_disconnected)
271 return "disconnected";
272 else
273 return "unknown";
274}
ed7951dc 275EXPORT_SYMBOL(drm_get_connector_status_name);
f453ba04 276
ac1bb36c
JB		 277/**
278 * drm_get_subpixel_order_name - return a string for a given subpixel enum
279 * @order: enum of subpixel_order
280 *
281 * Note you could abuse this and return something out of bounds, but that
282 * would be a caller error. No unscrubbed user data should make it here.
283 */
284const char *drm_get_subpixel_order_name(enum subpixel_order order)
285{
286 return drm_subpixel_enum_list[order].name;
287}
288EXPORT_SYMBOL(drm_get_subpixel_order_name);
289
6ba6d03e
VS		 290static char printable_char(int c)
291{
292 return isascii(c) && isprint(c) ? c : '?';
293}
294
c8e32cc1
DV		 295/**
296 * drm_get_format_name - return a string for drm fourcc format
297 * @format: format to compute name of
298 *
299 * Note that the buffer used by this function is globally shared and owned by
300 * the function itself.
301 *
302 * FIXME: This isn't really multithreading safe.
303 */
d20d3174 304const char *drm_get_format_name(uint32_t format)
6ba6d03e
VS		 305{
306 static char buf[32];
307
308 snprintf(buf, sizeof(buf),
309 "%c%c%c%c %s-endian (0x%08x)",
310 printable_char(format & 0xff),
311 printable_char((format >> 8) & 0xff),
312 printable_char((format >> 16) & 0xff),
313 printable_char((format >> 24) & 0x7f),
314 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
315 format);
316
317 return buf;
318}
319EXPORT_SYMBOL(drm_get_format_name);
320
f453ba04 321/**
065a50ed 322 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 323 * @dev: DRM device
065a50ed
DV		 324 * @obj: object pointer, used to generate unique ID
325 * @obj_type: object type
f453ba04 326 *
f453ba04 327 * Create a unique identifier based on @ptr in @dev's identifier space. Used
c8e32cc1
DV		 328 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
329 * modeset identifiers are _not_ reference counted. Hence don't use this for
330 * reference counted modeset objects like framebuffers.
f453ba04 331 *
c8e32cc1 332 * Returns:
f453ba04
DA		 333 * New unique (relative to other objects in @dev) integer identifier for the
334 * object.
335 */
8bd441b2
DV		 336int drm_mode_object_get(struct drm_device *dev,
337 struct drm_mode_object *obj, uint32_t obj_type)
f453ba04 338{
f453ba04
DA		 339 int ret;
340
ad2563c2 341 mutex_lock(&dev->mode_config.idr_mutex);
2e928815
TH		 342 ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL);
343 if (ret >= 0) {
4b096ac1
DV		 344 /*
345 * Set up the object linking under the protection of the idr
346 * lock so that other users can't see inconsistent state.
347 */
2e928815 348 obj->id = ret;
4b096ac1
DV		 349 obj->type = obj_type;
350 }
ad2563c2 351 mutex_unlock(&dev->mode_config.idr_mutex);
4b096ac1 352
2e928815 353 return ret < 0 ? ret : 0;
f453ba04
DA		 354}
355
356/**
065a50ed 357 * drm_mode_object_put - free a modeset identifer
f453ba04 358 * @dev: DRM device
065a50ed 359 * @object: object to free
f453ba04 360 *
c8e32cc1
DV		 361 * Free @id from @dev's unique identifier pool. Note that despite the _get
362 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
363 * for reference counted modeset objects like framebuffers.
f453ba04 364 */
8bd441b2
DV		 365void drm_mode_object_put(struct drm_device *dev,
366 struct drm_mode_object *object)
f453ba04 367{
ad2563c2 368 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 369 idr_remove(&dev->mode_config.crtc_idr, object->id);
ad2563c2 370 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 371}
372
98f75de4
RC		 373static struct drm_mode_object *_object_find(struct drm_device *dev,
374 uint32_t id, uint32_t type)
375{
376 struct drm_mode_object *obj = NULL;
377
378 mutex_lock(&dev->mode_config.idr_mutex);
379 obj = idr_find(&dev->mode_config.crtc_idr, id);
380 if (!obj || (type != DRM_MODE_OBJECT_ANY && obj->type != type) ||
381 (obj->id != id))
382 obj = NULL;
383 mutex_unlock(&dev->mode_config.idr_mutex);
384
385 return obj;
386}
387
786b99ed
DV		 388/**
389 * drm_mode_object_find - look up a drm object with static lifetime
390 * @dev: drm device
391 * @id: id of the mode object
392 * @type: type of the mode object
393 *
394 * Note that framebuffers cannot be looked up with this functions - since those
98f75de4
RC		 395 * are reference counted, they need special treatment. Even with
396 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
397 * rather than WARN_ON()).
786b99ed 398 */
7a9c9060
DV		 399struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
400 uint32_t id, uint32_t type)
f453ba04 401{
ad2563c2 402 struct drm_mode_object *obj = NULL;
f453ba04 403
786b99ed
DV		 404 /* Framebuffers are reference counted and need their own lookup
405 * function.*/
406 WARN_ON(type == DRM_MODE_OBJECT_FB);
98f75de4
RC		 407 obj = _object_find(dev, id, type);
408 /* don't leak out unref'd fb's */
409 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
ad2563c2 410 obj = NULL;
f453ba04
DA		 411 return obj;
412}
413EXPORT_SYMBOL(drm_mode_object_find);
414
f453ba04
DA		 415/**
416 * drm_framebuffer_init - initialize a framebuffer
417 * @dev: DRM device
065a50ed
DV		 418 * @fb: framebuffer to be initialized
419 * @funcs: ... with these functions
f453ba04 420 *
f453ba04
DA		 421 * Allocates an ID for the framebuffer's parent mode object, sets its mode
422 * functions & device file and adds it to the master fd list.
423 *
4b096ac1
DV		 424 * IMPORTANT:
425 * This functions publishes the fb and makes it available for concurrent access
426 * by other users. Which means by this point the fb _must_ be fully set up -
427 * since all the fb attributes are invariant over its lifetime, no further
428 * locking but only correct reference counting is required.
429 *
c8e32cc1 430 * Returns:
af901ca1 431 * Zero on success, error code on failure.
f453ba04
DA		 432 */
433int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
434 const struct drm_framebuffer_funcs *funcs)
435{
436 int ret;
437
4b096ac1 438 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e 439 kref_init(&fb->refcount);
4b096ac1
DV		 440 INIT_LIST_HEAD(&fb->filp_head);
441 fb->dev = dev;
442 fb->funcs = funcs;
f7eff60e 443
f453ba04 444 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
6bfc56aa 445 if (ret)
4b096ac1 446 goto out;
f453ba04 447
2b677e8c
DV		 448 /* Grab the idr reference. */
449 drm_framebuffer_reference(fb);
450
f453ba04
DA		 451 dev->mode_config.num_fb++;
452 list_add(&fb->head, &dev->mode_config.fb_list);
4b096ac1
DV		 453out:
454 mutex_unlock(&dev->mode_config.fb_lock);
f453ba04
DA		 455
456 return 0;
457}
458EXPORT_SYMBOL(drm_framebuffer_init);
459
f7eff60e
RC		 460static void drm_framebuffer_free(struct kref *kref)
461{
462 struct drm_framebuffer *fb =
463 container_of(kref, struct drm_framebuffer, refcount);
464 fb->funcs->destroy(fb);
465}
466
2b677e8c
DV		 467static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
468 uint32_t id)
469{
470 struct drm_mode_object *obj = NULL;
471 struct drm_framebuffer *fb;
472
473 mutex_lock(&dev->mode_config.idr_mutex);
474 obj = idr_find(&dev->mode_config.crtc_idr, id);
475 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
476 fb = NULL;
477 else
478 fb = obj_to_fb(obj);
479 mutex_unlock(&dev->mode_config.idr_mutex);
480
481 return fb;
482}
483
786b99ed
DV		 484/**
485 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
486 * @dev: drm device
487 * @id: id of the fb object
488 *
489 * If successful, this grabs an additional reference to the framebuffer -
490 * callers need to make sure to eventually unreference the returned framebuffer
c8e32cc1 491 * again, using @drm_framebuffer_unreference.
786b99ed
DV		 492 */
493struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
494 uint32_t id)
495{
786b99ed
DV		 496 struct drm_framebuffer *fb;
497
498 mutex_lock(&dev->mode_config.fb_lock);
2b677e8c 499 fb = __drm_framebuffer_lookup(dev, id);
786b99ed 500 if (fb)
9131d3d8 501 drm_framebuffer_reference(fb);
786b99ed
DV		 502 mutex_unlock(&dev->mode_config.fb_lock);
503
504 return fb;
505}
506EXPORT_SYMBOL(drm_framebuffer_lookup);
507
f7eff60e
RC		 508/**
509 * drm_framebuffer_unreference - unref a framebuffer
065a50ed
DV		 510 * @fb: framebuffer to unref
511 *
512 * This functions decrements the fb's refcount and frees it if it drops to zero.
f7eff60e
RC		 513 */
514void drm_framebuffer_unreference(struct drm_framebuffer *fb)
515{
8291272a 516 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 517 kref_put(&fb->refcount, drm_framebuffer_free);
518}
519EXPORT_SYMBOL(drm_framebuffer_unreference);
520
521/**
522 * drm_framebuffer_reference - incr the fb refcnt
065a50ed 523 * @fb: framebuffer
c8e32cc1
DV		 524 *
525 * This functions increments the fb's refcount.
f7eff60e
RC		 526 */
527void drm_framebuffer_reference(struct drm_framebuffer *fb)
528{
8291272a 529 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 530 kref_get(&fb->refcount);
531}
532EXPORT_SYMBOL(drm_framebuffer_reference);
533
2b677e8c
DV		 534static void drm_framebuffer_free_bug(struct kref *kref)
535{
536 BUG();
537}
538
6c2a7532
DV		 539static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
540{
8291272a 541 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
6c2a7532
DV		 542 kref_put(&fb->refcount, drm_framebuffer_free_bug);
543}
544
2b677e8c
DV		 545/* dev->mode_config.fb_lock must be held! */
546static void __drm_framebuffer_unregister(struct drm_device *dev,
547 struct drm_framebuffer *fb)
548{
549 mutex_lock(&dev->mode_config.idr_mutex);
550 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
551 mutex_unlock(&dev->mode_config.idr_mutex);
552
553 fb->base.id = 0;
554
6c2a7532 555 __drm_framebuffer_unreference(fb);
2b677e8c
DV		 556}
557
36206361
DV		 558/**
559 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
560 * @fb: fb to unregister
561 *
562 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
563 * those used for fbdev. Note that the caller must hold a reference of it's own,
564 * i.e. the object may not be destroyed through this call (since it'll lead to a
565 * locking inversion).
566 */
567void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
568{
2b677e8c
DV		 569 struct drm_device *dev = fb->dev;
570
571 mutex_lock(&dev->mode_config.fb_lock);
572 /* Mark fb as reaped and drop idr ref. */
573 __drm_framebuffer_unregister(dev, fb);
574 mutex_unlock(&dev->mode_config.fb_lock);
36206361
DV		 575}
576EXPORT_SYMBOL(drm_framebuffer_unregister_private);
577
f453ba04
DA		 578/**
579 * drm_framebuffer_cleanup - remove a framebuffer object
580 * @fb: framebuffer to remove
581 *
c8e32cc1
DV		 582 * Cleanup framebuffer. This function is intended to be used from the drivers
583 * ->destroy callback. It can also be used to clean up driver private
584 * framebuffers embedded into a larger structure.
36206361
DV		 585 *
586 * Note that this function does not remove the fb from active usuage - if it is
587 * still used anywhere, hilarity can ensue since userspace could call getfb on
588 * the id and get back -EINVAL. Obviously no concern at driver unload time.
589 *
590 * Also, the framebuffer will not be removed from the lookup idr - for
591 * user-created framebuffers this will happen in in the rmfb ioctl. For
592 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
593 * drm_framebuffer_unregister_private.
f453ba04
DA		 594 */
595void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
f7eff60e
RC		 596{
597 struct drm_device *dev = fb->dev;
8faf6b18 598
4b096ac1 599 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e
RC		 600 list_del(&fb->head);
601 dev->mode_config.num_fb--;
4b096ac1 602 mutex_unlock(&dev->mode_config.fb_lock);
f7eff60e
RC		 603}
604EXPORT_SYMBOL(drm_framebuffer_cleanup);
605
606/**
607 * drm_framebuffer_remove - remove and unreference a framebuffer object
608 * @fb: framebuffer to remove
609 *
f7eff60e 610 * Scans all the CRTCs and planes in @dev's mode_config. If they're
36206361 611 * using @fb, removes it, setting it to NULL. Then drops the reference to the
b62584e3
DV		 612 * passed-in framebuffer. Might take the modeset locks.
613 *
614 * Note that this function optimizes the cleanup away if the caller holds the
615 * last reference to the framebuffer. It is also guaranteed to not take the
616 * modeset locks in this case.
f7eff60e
RC		 617 */
618void drm_framebuffer_remove(struct drm_framebuffer *fb)
f453ba04
DA		 619{
620 struct drm_device *dev = fb->dev;
621 struct drm_crtc *crtc;
8cf5c917 622 struct drm_plane *plane;
5ef5f72f
DA		 623 struct drm_mode_set set;
624 int ret;
f453ba04 625
4b096ac1 626 WARN_ON(!list_empty(&fb->filp_head));
8faf6b18 627
b62584e3
DV		 628 /*
629 * drm ABI mandates that we remove any deleted framebuffers from active
630 * useage. But since most sane clients only remove framebuffers they no
631 * longer need, try to optimize this away.
632 *
633 * Since we're holding a reference ourselves, observing a refcount of 1
634 * means that we're the last holder and can skip it. Also, the refcount
635 * can never increase from 1 again, so we don't need any barriers or
636 * locks.
637 *
638 * Note that userspace could try to race with use and instate a new
639 * usage _after_ we've cleared all current ones. End result will be an
640 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
641 * in this manner.
642 */
643 if (atomic_read(&fb->refcount.refcount) > 1) {
644 drm_modeset_lock_all(dev);
645 /* remove from any CRTC */
646 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
f4510a27 647 if (crtc->primary->fb == fb) {
b62584e3
DV		 648 /* should turn off the crtc */
649 memset(&set, 0, sizeof(struct drm_mode_set));
650 set.crtc = crtc;
651 set.fb = NULL;
652 ret = drm_mode_set_config_internal(&set);
653 if (ret)
654 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
655 }
5ef5f72f 656 }
f453ba04 657
b62584e3 658 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
9125e618
VS		 659 if (plane->fb == fb)
660 drm_plane_force_disable(plane);
8cf5c917 661 }
b62584e3 662 drm_modeset_unlock_all(dev);
8cf5c917
JB		 663 }
664
f7eff60e 665 drm_framebuffer_unreference(fb);
f453ba04 666}
f7eff60e 667EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04
DA		 668
669/**
e13161af
MR		 670 * drm_crtc_init_with_planes - Initialise a new CRTC object with
671 * specified primary and cursor planes.
f453ba04
DA		 672 * @dev: DRM device
673 * @crtc: CRTC object to init
e13161af
MR		 674 * @primary: Primary plane for CRTC
675 * @cursor: Cursor plane for CRTC
f453ba04
DA		 676 * @funcs: callbacks for the new CRTC
677 *
ad6f5c34 678 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 679 *
c8e32cc1 680 * Returns:
6bfc56aa 681 * Zero on success, error code on failure.
f453ba04 682 */
e13161af
MR		 683int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
684 struct drm_plane *primary,
685 void *cursor,
686 const struct drm_crtc_funcs *funcs)
f453ba04 687{
6bfc56aa
VS		 688 int ret;
689
f453ba04
DA		 690 crtc->dev = dev;
691 crtc->funcs = funcs;
7c80e128 692 crtc->invert_dimensions = false;
f453ba04 693
84849903 694 drm_modeset_lock_all(dev);
29494c17
DV		 695 mutex_init(&crtc->mutex);
696 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
6bfc56aa
VS		 697
698 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
699 if (ret)
700 goto out;
f453ba04 701
bffd9de0
PZ		 702 crtc->base.properties = &crtc->properties;
703
f453ba04
DA		 704 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
705 dev->mode_config.num_crtc++;
6bfc56aa 706
e13161af
MR		 707 crtc->primary = primary;
708 if (primary)
709 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
710
6bfc56aa 711 out:
84849903 712 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 713
714 return ret;
f453ba04 715}
e13161af 716EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 717
718/**
ad6f5c34 719 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 720 * @crtc: CRTC to cleanup
721 *
ad6f5c34
VS		 722 * This function cleans up @crtc and removes it from the DRM mode setting
723 * core. Note that the function does *not* free the crtc structure itself,
724 * this is the responsibility of the caller.
f453ba04
DA		 725 */
726void drm_crtc_cleanup(struct drm_crtc *crtc)
727{
728 struct drm_device *dev = crtc->dev;
729
9e1c156f
SK		 730 kfree(crtc->gamma_store);
731 crtc->gamma_store = NULL;
f453ba04
DA		 732
733 drm_mode_object_put(dev, &crtc->base);
734 list_del(&crtc->head);
735 dev->mode_config.num_crtc--;
736}
737EXPORT_SYMBOL(drm_crtc_cleanup);
738
db5f7a6e
RK		 739/**
740 * drm_crtc_index - find the index of a registered CRTC
741 * @crtc: CRTC to find index for
742 *
743 * Given a registered CRTC, return the index of that CRTC within a DRM
744 * device's list of CRTCs.
745 */
746unsigned int drm_crtc_index(struct drm_crtc *crtc)
747{
748 unsigned int index = 0;
749 struct drm_crtc *tmp;
750
751 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
752 if (tmp == crtc)
753 return index;
754
755 index++;
756 }
757
758 BUG();
759}
760EXPORT_SYMBOL(drm_crtc_index);
761
86f422d5 762/*
f453ba04
DA		 763 * drm_mode_remove - remove and free a mode
764 * @connector: connector list to modify
765 * @mode: mode to remove
766 *
f453ba04
DA		 767 * Remove @mode from @connector's mode list, then free it.
768 */
86f422d5
LD		 769static void drm_mode_remove(struct drm_connector *connector,
770 struct drm_display_mode *mode)
f453ba04
DA		 771{
772 list_del(&mode->head);
554f1d78 773 drm_mode_destroy(connector->dev, mode);
f453ba04 774}
f453ba04
DA		 775
776/**
777 * drm_connector_init - Init a preallocated connector
778 * @dev: DRM device
779 * @connector: the connector to init
780 * @funcs: callbacks for this connector
065a50ed 781 * @connector_type: user visible type of the connector
f453ba04 782 *
f453ba04
DA		 783 * Initialises a preallocated connector. Connectors should be
784 * subclassed as part of driver connector objects.
6bfc56aa 785 *
c8e32cc1 786 * Returns:
6bfc56aa 787 * Zero on success, error code on failure.
f453ba04 788 */
6bfc56aa
VS		 789int drm_connector_init(struct drm_device *dev,
790 struct drm_connector *connector,
791 const struct drm_connector_funcs *funcs,
792 int connector_type)
f453ba04 793{
6bfc56aa 794 int ret;
b21e3afe
IM		 795 struct ida *connector_ida =
796 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 797
84849903 798 drm_modeset_lock_all(dev);
f453ba04 799
6bfc56aa
VS		 800 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
801 if (ret)
2abdd313 802 goto out_unlock;
6bfc56aa 803
7e3bdf4a 804 connector->base.properties = &connector->properties;
f453ba04
DA		 805 connector->dev = dev;
806 connector->funcs = funcs;
f453ba04
DA		 807 connector->connector_type = connector_type;
808 connector->connector_type_id =
b21e3afe
IM		 809 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
810 if (connector->connector_type_id < 0) {
811 ret = connector->connector_type_id;
2abdd313 812 goto out_put;
b21e3afe 813 }
2abdd313
JN		 814 connector->name =
815 kasprintf(GFP_KERNEL, "%s-%d",
816 drm_connector_enum_list[connector_type].name,
817 connector->connector_type_id);
818 if (!connector->name) {
819 ret = -ENOMEM;
820 goto out_put;
821 }
822
f453ba04
DA		 823 INIT_LIST_HEAD(&connector->probed_modes);
824 INIT_LIST_HEAD(&connector->modes);
825 connector->edid_blob_ptr = NULL;
5e2cb2f6 826 connector->status = connector_status_unknown;
f453ba04
DA		 827
828 list_add_tail(&connector->head, &dev->mode_config.connector_list);
829 dev->mode_config.num_connector++;
830
a7331e5c 831 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 832 drm_object_attach_property(&connector->base,
a7331e5c
TH		 833 dev->mode_config.edid_property,
834 0);
f453ba04 835
58495563 836 drm_object_attach_property(&connector->base,
f453ba04
DA		 837 dev->mode_config.dpms_property, 0);
838
2abdd313
JN		 839out_put:
840 if (ret)
841 drm_mode_object_put(dev, &connector->base);
842
843out_unlock:
84849903 844 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 845
846 return ret;
f453ba04
DA		 847}
848EXPORT_SYMBOL(drm_connector_init);
849
850/**
851 * drm_connector_cleanup - cleans up an initialised connector
852 * @connector: connector to cleanup
853 *
f453ba04
DA		 854 * Cleans up the connector but doesn't free the object.
855 */
856void drm_connector_cleanup(struct drm_connector *connector)
857{
858 struct drm_device *dev = connector->dev;
859 struct drm_display_mode *mode, *t;
860
861 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
862 drm_mode_remove(connector, mode);
863
864 list_for_each_entry_safe(mode, t, &connector->modes, head)
865 drm_mode_remove(connector, mode);
866
b21e3afe
IM		 867 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
868 connector->connector_type_id);
869
f453ba04 870 drm_mode_object_put(dev, &connector->base);
2abdd313
JN		 871 kfree(connector->name);
872 connector->name = NULL;
f453ba04 873 list_del(&connector->head);
6380c509 874 dev->mode_config.num_connector--;
f453ba04
DA		 875}
876EXPORT_SYMBOL(drm_connector_cleanup);
877
c8e32cc1
DV		 878/**
879 * drm_connector_unplug_all - unregister connector userspace interfaces
880 * @dev: drm device
881 *
882 * This function unregisters all connector userspace interfaces in sysfs. Should
883 * be call when the device is disconnected, e.g. from an usb driver's
884 * ->disconnect callback.
885 */
cbc7e221
DA		 886void drm_connector_unplug_all(struct drm_device *dev)
887{
888 struct drm_connector *connector;
889
890 /* taking the mode config mutex ends up in a clash with sysfs */
891 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
892 drm_sysfs_connector_remove(connector);
893
894}
895EXPORT_SYMBOL(drm_connector_unplug_all);
896
c8e32cc1
DV		 897/**
898 * drm_bridge_init - initialize a drm transcoder/bridge
899 * @dev: drm device
900 * @bridge: transcoder/bridge to set up
901 * @funcs: bridge function table
902 *
903 * Initialises a preallocated bridge. Bridges should be
904 * subclassed as part of driver connector objects.
905 *
906 * Returns:
907 * Zero on success, error code on failure.
908 */
3b336ec4
SP		 909int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
910 const struct drm_bridge_funcs *funcs)
911{
912 int ret;
913
914 drm_modeset_lock_all(dev);
915
916 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
917 if (ret)
918 goto out;
919
920 bridge->dev = dev;
921 bridge->funcs = funcs;
922
923 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
924 dev->mode_config.num_bridge++;
925
926 out:
927 drm_modeset_unlock_all(dev);
928 return ret;
929}
930EXPORT_SYMBOL(drm_bridge_init);
931
c8e32cc1
DV		 932/**
933 * drm_bridge_cleanup - cleans up an initialised bridge
934 * @bridge: bridge to cleanup
935 *
936 * Cleans up the bridge but doesn't free the object.
937 */
3b336ec4
SP		 938void drm_bridge_cleanup(struct drm_bridge *bridge)
939{
940 struct drm_device *dev = bridge->dev;
941
942 drm_modeset_lock_all(dev);
943 drm_mode_object_put(dev, &bridge->base);
944 list_del(&bridge->head);
945 dev->mode_config.num_bridge--;
946 drm_modeset_unlock_all(dev);
947}
948EXPORT_SYMBOL(drm_bridge_cleanup);
949
c8e32cc1
DV		 950/**
951 * drm_encoder_init - Init a preallocated encoder
952 * @dev: drm device
953 * @encoder: the encoder to init
954 * @funcs: callbacks for this encoder
955 * @encoder_type: user visible type of the encoder
956 *
957 * Initialises a preallocated encoder. Encoder should be
958 * subclassed as part of driver encoder objects.
959 *
960 * Returns:
961 * Zero on success, error code on failure.
962 */
6bfc56aa 963int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 964 struct drm_encoder *encoder,
965 const struct drm_encoder_funcs *funcs,
966 int encoder_type)
f453ba04 967{
6bfc56aa
VS		 968 int ret;
969
84849903 970 drm_modeset_lock_all(dev);
f453ba04 971
6bfc56aa
VS		 972 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
973 if (ret)
e5748946 974 goto out_unlock;
f453ba04 975
6bfc56aa 976 encoder->dev = dev;
f453ba04
DA		 977 encoder->encoder_type = encoder_type;
978 encoder->funcs = funcs;
e5748946
JN		 979 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
980 drm_encoder_enum_list[encoder_type].name,
981 encoder->base.id);
982 if (!encoder->name) {
983 ret = -ENOMEM;
984 goto out_put;
985 }
f453ba04
DA		 986
987 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
988 dev->mode_config.num_encoder++;
989
e5748946
JN		 990out_put:
991 if (ret)
992 drm_mode_object_put(dev, &encoder->base);
993
994out_unlock:
84849903 995 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 996
997 return ret;
f453ba04
DA		 998}
999EXPORT_SYMBOL(drm_encoder_init);
1000
c8e32cc1
DV		 1001/**
1002 * drm_encoder_cleanup - cleans up an initialised encoder
1003 * @encoder: encoder to cleanup
1004 *
1005 * Cleans up the encoder but doesn't free the object.
1006 */
f453ba04
DA		 1007void drm_encoder_cleanup(struct drm_encoder *encoder)
1008{
1009 struct drm_device *dev = encoder->dev;
84849903 1010 drm_modeset_lock_all(dev);
f453ba04 1011 drm_mode_object_put(dev, &encoder->base);
e5748946
JN		 1012 kfree(encoder->name);
1013 encoder->name = NULL;
f453ba04 1014 list_del(&encoder->head);
6380c509 1015 dev->mode_config.num_encoder--;
84849903 1016 drm_modeset_unlock_all(dev);
f453ba04
DA		 1017}
1018EXPORT_SYMBOL(drm_encoder_cleanup);
1019
35f2c3ae 1020/**
dc415ff9 1021 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1022 * @dev: DRM device
1023 * @plane: plane object to init
1024 * @possible_crtcs: bitmask of possible CRTCs
1025 * @funcs: callbacks for the new plane
1026 * @formats: array of supported formats (%DRM_FORMAT_*)
1027 * @format_count: number of elements in @formats
dc415ff9 1028 * @type: type of plane (overlay, primary, cursor)
35f2c3ae 1029 *
dc415ff9 1030 * Initializes a plane object of type @type.
35f2c3ae 1031 *
c8e32cc1 1032 * Returns:
35f2c3ae
VS		 1033 * Zero on success, error code on failure.
1034 */
dc415ff9
MR		 1035int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1036 unsigned long possible_crtcs,
1037 const struct drm_plane_funcs *funcs,
1038 const uint32_t *formats, uint32_t format_count,
1039 enum drm_plane_type type)
8cf5c917 1040{
6bfc56aa
VS		 1041 int ret;
1042
84849903 1043 drm_modeset_lock_all(dev);
8cf5c917 1044
6bfc56aa
VS		 1045 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1046 if (ret)
1047 goto out;
1048
4d93914a 1049 plane->base.properties = &plane->properties;
8cf5c917 1050 plane->dev = dev;
8cf5c917
JB		 1051 plane->funcs = funcs;
1052 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1053 GFP_KERNEL);
1054 if (!plane->format_types) {
1055 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1056 drm_mode_object_put(dev, &plane->base);
6bfc56aa
VS		 1057 ret = -ENOMEM;
1058 goto out;
8cf5c917
JB		 1059 }
1060
308e5bcb 1061 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1062 plane->format_count = format_count;
1063 plane->possible_crtcs = possible_crtcs;
dc415ff9 1064 plane->type = type;
8cf5c917 1065
dc415ff9
MR		 1066 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1067 dev->mode_config.num_total_plane++;
1068 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1069 dev->mode_config.num_overlay_plane++;
8cf5c917 1070
9922ab5a
RC		 1071 drm_object_attach_property(&plane->base,
1072 dev->mode_config.plane_type_property,
1073 plane->type);
1074
6bfc56aa 1075 out:
84849903 1076 drm_modeset_unlock_all(dev);
8cf5c917 1077
6bfc56aa 1078 return ret;
8cf5c917 1079}
dc415ff9
MR		 1080EXPORT_SYMBOL(drm_universal_plane_init);
1081
1082/**
1083 * drm_plane_init - Initialize a legacy plane
1084 * @dev: DRM device
1085 * @plane: plane object to init
1086 * @possible_crtcs: bitmask of possible CRTCs
1087 * @funcs: callbacks for the new plane
1088 * @formats: array of supported formats (%DRM_FORMAT_*)
1089 * @format_count: number of elements in @formats
1090 * @is_primary: plane type (primary vs overlay)
1091 *
1092 * Legacy API to initialize a DRM plane.
1093 *
1094 * New drivers should call drm_universal_plane_init() instead.
1095 *
1096 * Returns:
1097 * Zero on success, error code on failure.
1098 */
1099int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1100 unsigned long possible_crtcs,
1101 const struct drm_plane_funcs *funcs,
1102 const uint32_t *formats, uint32_t format_count,
1103 bool is_primary)
1104{
1105 enum drm_plane_type type;
1106
1107 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1108 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1109 formats, format_count, type);
1110}
8cf5c917
JB		 1111EXPORT_SYMBOL(drm_plane_init);
1112
35f2c3ae
VS		 1113/**
1114 * drm_plane_cleanup - Clean up the core plane usage
1115 * @plane: plane to cleanup
1116 *
1117 * This function cleans up @plane and removes it from the DRM mode setting
1118 * core. Note that the function does *not* free the plane structure itself,
1119 * this is the responsibility of the caller.
1120 */
8cf5c917
JB		 1121void drm_plane_cleanup(struct drm_plane *plane)
1122{
1123 struct drm_device *dev = plane->dev;
1124
84849903 1125 drm_modeset_lock_all(dev);
8cf5c917
JB		 1126 kfree(plane->format_types);
1127 drm_mode_object_put(dev, &plane->base);
dc415ff9
MR		 1128
1129 BUG_ON(list_empty(&plane->head));
1130
1131 list_del(&plane->head);
1132 dev->mode_config.num_total_plane--;
1133 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1134 dev->mode_config.num_overlay_plane--;
84849903 1135 drm_modeset_unlock_all(dev);
8cf5c917
JB		 1136}
1137EXPORT_SYMBOL(drm_plane_cleanup);
1138
35f2c3ae
VS		 1139/**
1140 * drm_plane_force_disable - Forcibly disable a plane
1141 * @plane: plane to disable
1142 *
1143 * Forces the plane to be disabled.
1144 *
1145 * Used when the plane's current framebuffer is destroyed,
1146 * and when restoring fbdev mode.
1147 */
9125e618
VS		 1148void drm_plane_force_disable(struct drm_plane *plane)
1149{
0fe27f06 1150 struct drm_framebuffer *old_fb = plane->fb;
9125e618
VS		 1151 int ret;
1152
0fe27f06 1153 if (!old_fb)
9125e618
VS		 1154 return;
1155
1156 ret = plane->funcs->disable_plane(plane);
731cce48 1157 if (ret) {
9125e618 1158 DRM_ERROR("failed to disable plane with busy fb\n");
731cce48
DV		 1159 return;
1160 }
9125e618 1161 /* disconnect the plane from the fb and crtc: */
0fe27f06 1162 __drm_framebuffer_unreference(old_fb);
9125e618
VS		 1163 plane->fb = NULL;
1164 plane->crtc = NULL;
1165}
1166EXPORT_SYMBOL(drm_plane_force_disable);
1167
f453ba04
DA		 1168static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1169{
1170 struct drm_property *edid;
1171 struct drm_property *dpms;
f453ba04
DA		 1172
1173 /*
1174 * Standard properties (apply to all connectors)
1175 */
1176 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1177 DRM_MODE_PROP_IMMUTABLE,
1178 "EDID", 0);
1179 dev->mode_config.edid_property = edid;
1180
4a67d391
SH		 1181 dpms = drm_property_create_enum(dev, 0,
1182 "DPMS", drm_dpms_enum_list,
1183 ARRAY_SIZE(drm_dpms_enum_list));
f453ba04
DA		 1184 dev->mode_config.dpms_property = dpms;
1185
1186 return 0;
1187}
1188
9922ab5a
RC		 1189static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1190{
1191 struct drm_property *type;
1192
1193 /*
1194 * Standard properties (apply to all planes)
1195 */
1196 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1197 "type", drm_plane_type_enum_list,
1198 ARRAY_SIZE(drm_plane_type_enum_list));
1199 dev->mode_config.plane_type_property = type;
1200
1201 return 0;
1202}
1203
f453ba04
DA		 1204/**
1205 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1206 * @dev: DRM device
1207 *
1208 * Called by a driver the first time a DVI-I connector is made.
1209 */
1210int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1211{
1212 struct drm_property *dvi_i_selector;
1213 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1214
1215 if (dev->mode_config.dvi_i_select_subconnector_property)
1216 return 0;
1217
1218 dvi_i_selector =
4a67d391 1219 drm_property_create_enum(dev, 0,
f453ba04 1220 "select subconnector",
4a67d391 1221 drm_dvi_i_select_enum_list,
f453ba04 1222 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1223 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1224
4a67d391 1225 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1226 "subconnector",
4a67d391 1227 drm_dvi_i_subconnector_enum_list,
f453ba04 1228 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1229 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1230
1231 return 0;
1232}
1233EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1234
1235/**
1236 * drm_create_tv_properties - create TV specific connector properties
1237 * @dev: DRM device
1238 * @num_modes: number of different TV formats (modes) supported
1239 * @modes: array of pointers to strings containing name of each format
1240 *
1241 * Called by a driver's TV initialization routine, this function creates
1242 * the TV specific connector properties for a given device. Caller is
1243 * responsible for allocating a list of format names and passing them to
1244 * this routine.
1245 */
1246int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1247 char *modes[])
1248{
1249 struct drm_property *tv_selector;
1250 struct drm_property *tv_subconnector;
1251 int i;
1252
1253 if (dev->mode_config.tv_select_subconnector_property)
1254 return 0;
1255
1256 /*
1257 * Basic connector properties
1258 */
4a67d391 1259 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1260 "select subconnector",
4a67d391 1261 drm_tv_select_enum_list,
f453ba04 1262 ARRAY_SIZE(drm_tv_select_enum_list));
f453ba04
DA		 1263 dev->mode_config.tv_select_subconnector_property = tv_selector;
1264
1265 tv_subconnector =
4a67d391
SH		 1266 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1267 "subconnector",
1268 drm_tv_subconnector_enum_list,
f453ba04 1269 ARRAY_SIZE(drm_tv_subconnector_enum_list));
f453ba04
DA		 1270 dev->mode_config.tv_subconnector_property = tv_subconnector;
1271
1272 /*
1273 * Other, TV specific properties: margins & TV modes.
1274 */
1275 dev->mode_config.tv_left_margin_property =
d9bc3c02 1276 drm_property_create_range(dev, 0, "left margin", 0, 100);
f453ba04
DA		 1277
1278 dev->mode_config.tv_right_margin_property =
d9bc3c02 1279 drm_property_create_range(dev, 0, "right margin", 0, 100);
f453ba04
DA		 1280
1281 dev->mode_config.tv_top_margin_property =
d9bc3c02 1282 drm_property_create_range(dev, 0, "top margin", 0, 100);
f453ba04
DA		 1283
1284 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1285 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
f453ba04
DA		 1286
1287 dev->mode_config.tv_mode_property =
1288 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1289 "mode", num_modes);
1290 for (i = 0; i < num_modes; i++)
1291 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1292 i, modes[i]);
1293
b6b7902e 1294 dev->mode_config.tv_brightness_property =
d9bc3c02 1295 drm_property_create_range(dev, 0, "brightness", 0, 100);
b6b7902e
FJ		 1296
1297 dev->mode_config.tv_contrast_property =
d9bc3c02 1298 drm_property_create_range(dev, 0, "contrast", 0, 100);
b6b7902e
FJ		 1299
1300 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1301 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
b6b7902e 1302
a75f0236 1303 dev->mode_config.tv_overscan_property =
d9bc3c02 1304 drm_property_create_range(dev, 0, "overscan", 0, 100);
a75f0236
FJ		 1305
1306 dev->mode_config.tv_saturation_property =
d9bc3c02 1307 drm_property_create_range(dev, 0, "saturation", 0, 100);
a75f0236
FJ		 1308
1309 dev->mode_config.tv_hue_property =
d9bc3c02 1310 drm_property_create_range(dev, 0, "hue", 0, 100);
a75f0236 1311
f453ba04
DA		 1312 return 0;
1313}
1314EXPORT_SYMBOL(drm_mode_create_tv_properties);
1315
1316/**
1317 * drm_mode_create_scaling_mode_property - create scaling mode property
1318 * @dev: DRM device
1319 *
1320 * Called by a driver the first time it's needed, must be attached to desired
1321 * connectors.
1322 */
1323int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1324{
1325 struct drm_property *scaling_mode;
f453ba04
DA		 1326
1327 if (dev->mode_config.scaling_mode_property)
1328 return 0;
1329
1330 scaling_mode =
4a67d391
SH		 1331 drm_property_create_enum(dev, 0, "scaling mode",
1332 drm_scaling_mode_enum_list,
f453ba04 1333 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1334
1335 dev->mode_config.scaling_mode_property = scaling_mode;
1336
1337 return 0;
1338}
1339EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1340
884840aa
JB		 1341/**
1342 * drm_mode_create_dirty_property - create dirty property
1343 * @dev: DRM device
1344 *
1345 * Called by a driver the first time it's needed, must be attached to desired
1346 * connectors.
1347 */
1348int drm_mode_create_dirty_info_property(struct drm_device *dev)
1349{
1350 struct drm_property *dirty_info;
884840aa
JB		 1351
1352 if (dev->mode_config.dirty_info_property)
1353 return 0;
1354
1355 dirty_info =
4a67d391 1356 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1357 "dirty",
4a67d391 1358 drm_dirty_info_enum_list,
884840aa 1359 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1360 dev->mode_config.dirty_info_property = dirty_info;
1361
1362 return 0;
1363}
1364EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1365
ea9cbb06 1366static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
f453ba04
DA		 1367{
1368 uint32_t total_objects = 0;
1369
1370 total_objects += dev->mode_config.num_crtc;
1371 total_objects += dev->mode_config.num_connector;
1372 total_objects += dev->mode_config.num_encoder;
3b336ec4 1373 total_objects += dev->mode_config.num_bridge;
f453ba04 1374
f453ba04
DA		 1375 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1376 if (!group->id_list)
1377 return -ENOMEM;
1378
1379 group->num_crtcs = 0;
1380 group->num_connectors = 0;
1381 group->num_encoders = 0;
3b336ec4 1382 group->num_bridges = 0;
f453ba04
DA		 1383 return 0;
1384}
1385
ad222799
DA		 1386void drm_mode_group_destroy(struct drm_mode_group *group)
1387{
1388 kfree(group->id_list);
1389 group->id_list = NULL;
1390}
1391
c8e32cc1
DV		 1392/*
1393 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1394 * the drm core's responsibility to set up mode control groups.
1395 */
f453ba04
DA		 1396int drm_mode_group_init_legacy_group(struct drm_device *dev,
1397 struct drm_mode_group *group)
1398{
1399 struct drm_crtc *crtc;
1400 struct drm_encoder *encoder;
1401 struct drm_connector *connector;
3b336ec4 1402 struct drm_bridge *bridge;
f453ba04
DA		 1403 int ret;
1404
1405 if ((ret = drm_mode_group_init(dev, group)))
1406 return ret;
1407
1408 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1409 group->id_list[group->num_crtcs++] = crtc->base.id;
1410
1411 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1412 group->id_list[group->num_crtcs + group->num_encoders++] =
1413 encoder->base.id;
1414
1415 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1416 group->id_list[group->num_crtcs + group->num_encoders +
1417 group->num_connectors++] = connector->base.id;
1418
3b336ec4
SP		 1419 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1420 group->id_list[group->num_crtcs + group->num_encoders +
1421 group->num_connectors + group->num_bridges++] =
1422 bridge->base.id;
1423
f453ba04
DA		 1424 return 0;
1425}
9c1dfc55 1426EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
f453ba04 1427
f453ba04
DA		 1428/**
1429 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1430 * @out: drm_mode_modeinfo struct to return to the user
1431 * @in: drm_display_mode to use
1432 *
f453ba04
DA		 1433 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1434 * the user.
1435 */
93bbf6db
VS		 1436static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1437 const struct drm_display_mode *in)
f453ba04 1438{
e36fae38
VS		 1439 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1440 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1441 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1442 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1443 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1444 "timing values too large for mode info\n");
1445
f453ba04
DA		 1446 out->clock = in->clock;
1447 out->hdisplay = in->hdisplay;
1448 out->hsync_start = in->hsync_start;
1449 out->hsync_end = in->hsync_end;
1450 out->htotal = in->htotal;
1451 out->hskew = in->hskew;
1452 out->vdisplay = in->vdisplay;
1453 out->vsync_start = in->vsync_start;
1454 out->vsync_end = in->vsync_end;
1455 out->vtotal = in->vtotal;
1456 out->vscan = in->vscan;
1457 out->vrefresh = in->vrefresh;
1458 out->flags = in->flags;
1459 out->type = in->type;
1460 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1461 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1462}
1463
1464/**
74afee7d 1465 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
f453ba04
DA		 1466 * @out: drm_display_mode to return to the user
1467 * @in: drm_mode_modeinfo to use
1468 *
f453ba04
DA		 1469 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1470 * the caller.
90367bf6 1471 *
c8e32cc1 1472 * Returns:
90367bf6 1473 * Zero on success, errno on failure.
f453ba04 1474 */
93bbf6db
VS		 1475static int drm_crtc_convert_umode(struct drm_display_mode *out,
1476 const struct drm_mode_modeinfo *in)
f453ba04 1477{
90367bf6
VS		 1478 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1479 return -ERANGE;
1480
5848ad40
DL		 1481 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1482 return -EINVAL;
1483
f453ba04
DA		 1484 out->clock = in->clock;
1485 out->hdisplay = in->hdisplay;
1486 out->hsync_start = in->hsync_start;
1487 out->hsync_end = in->hsync_end;
1488 out->htotal = in->htotal;
1489 out->hskew = in->hskew;
1490 out->vdisplay = in->vdisplay;
1491 out->vsync_start = in->vsync_start;
1492 out->vsync_end = in->vsync_end;
1493 out->vtotal = in->vtotal;
1494 out->vscan = in->vscan;
1495 out->vrefresh = in->vrefresh;
1496 out->flags = in->flags;
1497 out->type = in->type;
1498 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1499 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
90367bf6
VS		 1500
1501 return 0;
f453ba04
DA		 1502}
1503
1504/**
1505 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1506 * @dev: drm device for the ioctl
1507 * @data: data pointer for the ioctl
1508 * @file_priv: drm file for the ioctl call
f453ba04 1509 *
f453ba04
DA		 1510 * Construct a set of configuration description structures and return
1511 * them to the user, including CRTC, connector and framebuffer configuration.
1512 *
1513 * Called by the user via ioctl.
1514 *
c8e32cc1 1515 * Returns:
f453ba04
DA		 1516 * Zero on success, errno on failure.
1517 */
1518int drm_mode_getresources(struct drm_device *dev, void *data,
1519 struct drm_file *file_priv)
1520{
1521 struct drm_mode_card_res *card_res = data;
1522 struct list_head *lh;
1523 struct drm_framebuffer *fb;
1524 struct drm_connector *connector;
1525 struct drm_crtc *crtc;
1526 struct drm_encoder *encoder;
1527 int ret = 0;
1528 int connector_count = 0;
1529 int crtc_count = 0;
1530 int fb_count = 0;
1531 int encoder_count = 0;
1532 int copied = 0, i;
1533 uint32_t __user *fb_id;
1534 uint32_t __user *crtc_id;
1535 uint32_t __user *connector_id;
1536 uint32_t __user *encoder_id;
1537 struct drm_mode_group *mode_group;
1538
fb3b06c8
DA		 1539 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1540 return -EINVAL;
1541
f453ba04 1542
4b096ac1 1543 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1544 /*
1545 * For the non-control nodes we need to limit the list of resources
1546 * by IDs in the group list for this node
1547 */
1548 list_for_each(lh, &file_priv->fbs)
1549 fb_count++;
1550
4b096ac1
DV		 1551 /* handle this in 4 parts */
1552 /* FBs */
1553 if (card_res->count_fbs >= fb_count) {
1554 copied = 0;
1555 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1556 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1557 if (put_user(fb->base.id, fb_id + copied)) {
1558 mutex_unlock(&file_priv->fbs_lock);
1559 return -EFAULT;
1560 }
1561 copied++;
1562 }
1563 }
1564 card_res->count_fbs = fb_count;
1565 mutex_unlock(&file_priv->fbs_lock);
1566
1567 drm_modeset_lock_all(dev);
43683057 1568 if (!drm_is_primary_client(file_priv)) {
f453ba04 1569
09f308f7 1570 mode_group = NULL;
f453ba04
DA		 1571 list_for_each(lh, &dev->mode_config.crtc_list)
1572 crtc_count++;
1573
1574 list_for_each(lh, &dev->mode_config.connector_list)
1575 connector_count++;
1576
1577 list_for_each(lh, &dev->mode_config.encoder_list)
1578 encoder_count++;
1579 } else {
1580
09f308f7 1581 mode_group = &file_priv->master->minor->mode_group;
f453ba04
DA		 1582 crtc_count = mode_group->num_crtcs;
1583 connector_count = mode_group->num_connectors;
1584 encoder_count = mode_group->num_encoders;
1585 }
1586
1587 card_res->max_height = dev->mode_config.max_height;
1588 card_res->min_height = dev->mode_config.min_height;
1589 card_res->max_width = dev->mode_config.max_width;
1590 card_res->min_width = dev->mode_config.min_width;
1591
f453ba04
DA		 1592 /* CRTCs */
1593 if (card_res->count_crtcs >= crtc_count) {
1594 copied = 0;
1595 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
09f308f7 1596 if (!mode_group) {
f453ba04
DA		 1597 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1598 head) {
9440106b 1599 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1600 if (put_user(crtc->base.id, crtc_id + copied)) {
1601 ret = -EFAULT;
1602 goto out;
1603 }
1604 copied++;
1605 }
1606 } else {
1607 for (i = 0; i < mode_group->num_crtcs; i++) {
1608 if (put_user(mode_group->id_list[i],
1609 crtc_id + copied)) {
1610 ret = -EFAULT;
1611 goto out;
1612 }
1613 copied++;
1614 }
1615 }
1616 }
1617 card_res->count_crtcs = crtc_count;
1618
1619 /* Encoders */
1620 if (card_res->count_encoders >= encoder_count) {
1621 copied = 0;
1622 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
09f308f7 1623 if (!mode_group) {
f453ba04
DA		 1624 list_for_each_entry(encoder,
1625 &dev->mode_config.encoder_list,
1626 head) {
9440106b 1627 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
83a8cfd3 1628 encoder->name);
f453ba04
DA		 1629 if (put_user(encoder->base.id, encoder_id +
1630 copied)) {
1631 ret = -EFAULT;
1632 goto out;
1633 }
1634 copied++;
1635 }
1636 } else {
1637 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1638 if (put_user(mode_group->id_list[i],
1639 encoder_id + copied)) {
1640 ret = -EFAULT;
1641 goto out;
1642 }
1643 copied++;
1644 }
1645
1646 }
1647 }
1648 card_res->count_encoders = encoder_count;
1649
1650 /* Connectors */
1651 if (card_res->count_connectors >= connector_count) {
1652 copied = 0;
1653 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
09f308f7 1654 if (!mode_group) {
f453ba04
DA		 1655 list_for_each_entry(connector,
1656 &dev->mode_config.connector_list,
1657 head) {
9440106b
JG		 1658 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1659 connector->base.id,
25933820 1660 connector->name);
f453ba04
DA		 1661 if (put_user(connector->base.id,
1662 connector_id + copied)) {
1663 ret = -EFAULT;
1664 goto out;
1665 }
1666 copied++;
1667 }
1668 } else {
1669 int start = mode_group->num_crtcs +
1670 mode_group->num_encoders;
1671 for (i = start; i < start + mode_group->num_connectors; i++) {
1672 if (put_user(mode_group->id_list[i],
1673 connector_id + copied)) {
1674 ret = -EFAULT;
1675 goto out;
1676 }
1677 copied++;
1678 }
1679 }
1680 }
1681 card_res->count_connectors = connector_count;
1682
9440106b 1683 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1684 card_res->count_connectors, card_res->count_encoders);
1685
1686out:
84849903 1687 drm_modeset_unlock_all(dev);
f453ba04
DA		 1688 return ret;
1689}
1690
1691/**
1692 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1693 * @dev: drm device for the ioctl
1694 * @data: data pointer for the ioctl
1695 * @file_priv: drm file for the ioctl call
f453ba04 1696 *
f453ba04
DA		 1697 * Construct a CRTC configuration structure to return to the user.
1698 *
1699 * Called by the user via ioctl.
1700 *
c8e32cc1 1701 * Returns:
f453ba04
DA		 1702 * Zero on success, errno on failure.
1703 */
1704int drm_mode_getcrtc(struct drm_device *dev,
1705 void *data, struct drm_file *file_priv)
1706{
1707 struct drm_mode_crtc *crtc_resp = data;
1708 struct drm_crtc *crtc;
f453ba04
DA		 1709 int ret = 0;
1710
fb3b06c8
DA		 1711 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1712 return -EINVAL;
1713
84849903 1714 drm_modeset_lock_all(dev);
f453ba04 1715
a2b34e22
RC		 1716 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1717 if (!crtc) {
f27657f2 1718 ret = -ENOENT;
f453ba04
DA		 1719 goto out;
1720 }
f453ba04
DA		 1721
1722 crtc_resp->x = crtc->x;
1723 crtc_resp->y = crtc->y;
1724 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 1725 if (crtc->primary->fb)
1726 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 1727 else
1728 crtc_resp->fb_id = 0;
1729
1730 if (crtc->enabled) {
1731
1732 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1733 crtc_resp->mode_valid = 1;
1734
1735 } else {
1736 crtc_resp->mode_valid = 0;
1737 }
1738
1739out:
84849903 1740 drm_modeset_unlock_all(dev);
f453ba04
DA		 1741 return ret;
1742}
1743
61d8e328
DL		 1744static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1745 const struct drm_file *file_priv)
1746{
1747 /*
1748 * If user-space hasn't configured the driver to expose the stereo 3D
1749 * modes, don't expose them.
1750 */
1751 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1752 return false;
1753
1754 return true;
1755}
1756
f453ba04
DA		 1757/**
1758 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 1759 * @dev: drm device for the ioctl
1760 * @data: data pointer for the ioctl
1761 * @file_priv: drm file for the ioctl call
f453ba04 1762 *
f453ba04
DA		 1763 * Construct a connector configuration structure to return to the user.
1764 *
1765 * Called by the user via ioctl.
1766 *
c8e32cc1 1767 * Returns:
f453ba04
DA		 1768 * Zero on success, errno on failure.
1769 */
1770int drm_mode_getconnector(struct drm_device *dev, void *data,
1771 struct drm_file *file_priv)
1772{
1773 struct drm_mode_get_connector *out_resp = data;
f453ba04
DA		 1774 struct drm_connector *connector;
1775 struct drm_display_mode *mode;
1776 int mode_count = 0;
1777 int props_count = 0;
1778 int encoders_count = 0;
1779 int ret = 0;
1780 int copied = 0;
1781 int i;
1782 struct drm_mode_modeinfo u_mode;
1783 struct drm_mode_modeinfo __user *mode_ptr;
1784 uint32_t __user *prop_ptr;
1785 uint64_t __user *prop_values;
1786 uint32_t __user *encoder_ptr;
1787
fb3b06c8
DA		 1788 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1789 return -EINVAL;
1790
f453ba04
DA		 1791 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1792
9440106b 1793 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 1794
7b24056b 1795 mutex_lock(&dev->mode_config.mutex);
f453ba04 1796
a2b34e22
RC		 1797 connector = drm_connector_find(dev, out_resp->connector_id);
1798 if (!connector) {
f27657f2 1799 ret = -ENOENT;
f453ba04
DA		 1800 goto out;
1801 }
f453ba04 1802
7f88a9be 1803 props_count = connector->properties.count;
f453ba04
DA		 1804
1805 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1806 if (connector->encoder_ids[i] != 0) {
1807 encoders_count++;
1808 }
1809 }
1810
1811 if (out_resp->count_modes == 0) {
1812 connector->funcs->fill_modes(connector,
1813 dev->mode_config.max_width,
1814 dev->mode_config.max_height);
1815 }
1816
1817 /* delayed so we get modes regardless of pre-fill_modes state */
1818 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 1819 if (drm_mode_expose_to_userspace(mode, file_priv))
1820 mode_count++;
f453ba04
DA		 1821
1822 out_resp->connector_id = connector->base.id;
1823 out_resp->connector_type = connector->connector_type;
1824 out_resp->connector_type_id = connector->connector_type_id;
1825 out_resp->mm_width = connector->display_info.width_mm;
1826 out_resp->mm_height = connector->display_info.height_mm;
1827 out_resp->subpixel = connector->display_info.subpixel_order;
1828 out_resp->connection = connector->status;
1829 if (connector->encoder)
1830 out_resp->encoder_id = connector->encoder->base.id;
1831 else
1832 out_resp->encoder_id = 0;
1833
1834 /*
1835 * This ioctl is called twice, once to determine how much space is
1836 * needed, and the 2nd time to fill it.
1837 */
1838 if ((out_resp->count_modes >= mode_count) && mode_count) {
1839 copied = 0;
81f6c7f8 1840 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 1841 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 1842 if (!drm_mode_expose_to_userspace(mode, file_priv))
1843 continue;
1844
f453ba04
DA		 1845 drm_crtc_convert_to_umode(&u_mode, mode);
1846 if (copy_to_user(mode_ptr + copied,
1847 &u_mode, sizeof(u_mode))) {
1848 ret = -EFAULT;
1849 goto out;
1850 }
1851 copied++;
1852 }
1853 }
1854 out_resp->count_modes = mode_count;
1855
1856 if ((out_resp->count_props >= props_count) && props_count) {
1857 copied = 0;
81f6c7f8
VS		 1858 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1859 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
7f88a9be
PZ		 1860 for (i = 0; i < connector->properties.count; i++) {
1861 if (put_user(connector->properties.ids[i],
1862 prop_ptr + copied)) {
1863 ret = -EFAULT;
1864 goto out;
1865 }
f453ba04 1866
7f88a9be
PZ		 1867 if (put_user(connector->properties.values[i],
1868 prop_values + copied)) {
1869 ret = -EFAULT;
1870 goto out;
f453ba04 1871 }
7f88a9be 1872 copied++;
f453ba04
DA		 1873 }
1874 }
1875 out_resp->count_props = props_count;
1876
1877 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1878 copied = 0;
81f6c7f8 1879 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 1880 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1881 if (connector->encoder_ids[i] != 0) {
1882 if (put_user(connector->encoder_ids[i],
1883 encoder_ptr + copied)) {
1884 ret = -EFAULT;
1885 goto out;
1886 }
1887 copied++;
1888 }
1889 }
1890 }
1891 out_resp->count_encoders = encoders_count;
1892
1893out:
7b24056b
DV		 1894 mutex_unlock(&dev->mode_config.mutex);
1895
f453ba04
DA		 1896 return ret;
1897}
1898
c8e32cc1
DV		 1899/**
1900 * drm_mode_getencoder - get encoder configuration
1901 * @dev: drm device for the ioctl
1902 * @data: data pointer for the ioctl
1903 * @file_priv: drm file for the ioctl call
1904 *
1905 * Construct a encoder configuration structure to return to the user.
1906 *
1907 * Called by the user via ioctl.
1908 *
1909 * Returns:
1910 * Zero on success, errno on failure.
1911 */
f453ba04
DA		 1912int drm_mode_getencoder(struct drm_device *dev, void *data,
1913 struct drm_file *file_priv)
1914{
1915 struct drm_mode_get_encoder *enc_resp = data;
f453ba04
DA		 1916 struct drm_encoder *encoder;
1917 int ret = 0;
1918
fb3b06c8
DA		 1919 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1920 return -EINVAL;
1921
84849903 1922 drm_modeset_lock_all(dev);
a2b34e22
RC		 1923 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
1924 if (!encoder) {
f27657f2 1925 ret = -ENOENT;
f453ba04
DA		 1926 goto out;
1927 }
f453ba04
DA		 1928
1929 if (encoder->crtc)
1930 enc_resp->crtc_id = encoder->crtc->base.id;
1931 else
1932 enc_resp->crtc_id = 0;
1933 enc_resp->encoder_type = encoder->encoder_type;
1934 enc_resp->encoder_id = encoder->base.id;
1935 enc_resp->possible_crtcs = encoder->possible_crtcs;
1936 enc_resp->possible_clones = encoder->possible_clones;
1937
1938out:
84849903 1939 drm_modeset_unlock_all(dev);
f453ba04
DA		 1940 return ret;
1941}
1942
8cf5c917 1943/**
c8e32cc1 1944 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 1945 * @dev: DRM device
1946 * @data: ioctl data
1947 * @file_priv: DRM file info
1948 *
c8e32cc1
DV		 1949 * Construct a list of plane ids to return to the user.
1950 *
1951 * Called by the user via ioctl.
1952 *
1953 * Returns:
1954 * Zero on success, errno on failure.
8cf5c917
JB		 1955 */
1956int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 1957 struct drm_file *file_priv)
8cf5c917
JB		 1958{
1959 struct drm_mode_get_plane_res *plane_resp = data;
1960 struct drm_mode_config *config;
1961 struct drm_plane *plane;
1962 uint32_t __user *plane_ptr;
1963 int copied = 0, ret = 0;
681e7ec7 1964 unsigned num_planes;
8cf5c917
JB		 1965
1966 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1967 return -EINVAL;
1968
84849903 1969 drm_modeset_lock_all(dev);
8cf5c917
JB		 1970 config = &dev->mode_config;
1971
681e7ec7
MR		 1972 if (file_priv->universal_planes)
1973 num_planes = config->num_total_plane;
1974 else
1975 num_planes = config->num_overlay_plane;
1976
8cf5c917
JB		 1977 /*
1978 * This ioctl is called twice, once to determine how much space is
1979 * needed, and the 2nd time to fill it.
1980 */
681e7ec7
MR		 1981 if (num_planes &&
1982 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 1983 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917
JB		 1984
1985 list_for_each_entry(plane, &config->plane_list, head) {
681e7ec7
MR		 1986 /*
1987 * Unless userspace set the 'universal planes'
1988 * capability bit, only advertise overlays.
1989 */
1990 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
1991 !file_priv->universal_planes)
e27dde3e
MR		 1992 continue;
1993
8cf5c917
JB		 1994 if (put_user(plane->base.id, plane_ptr + copied)) {
1995 ret = -EFAULT;
1996 goto out;
1997 }
1998 copied++;
1999 }
2000 }
681e7ec7 2001 plane_resp->count_planes = num_planes;
8cf5c917
JB		 2002
2003out:
84849903 2004 drm_modeset_unlock_all(dev);
8cf5c917
JB		 2005 return ret;
2006}
2007
2008/**
c8e32cc1 2009 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2010 * @dev: DRM device
2011 * @data: ioctl data
2012 * @file_priv: DRM file info
2013 *
c8e32cc1
DV		 2014 * Construct a plane configuration structure to return to the user.
2015 *
2016 * Called by the user via ioctl.
2017 *
2018 * Returns:
2019 * Zero on success, errno on failure.
8cf5c917
JB		 2020 */
2021int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2022 struct drm_file *file_priv)
8cf5c917
JB		 2023{
2024 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2025 struct drm_plane *plane;
2026 uint32_t __user *format_ptr;
2027 int ret = 0;
2028
2029 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2030 return -EINVAL;
2031
84849903 2032 drm_modeset_lock_all(dev);
a2b34e22
RC		 2033 plane = drm_plane_find(dev, plane_resp->plane_id);
2034 if (!plane) {
8cf5c917
JB		 2035 ret = -ENOENT;
2036 goto out;
2037 }
8cf5c917
JB		 2038
2039 if (plane->crtc)
2040 plane_resp->crtc_id = plane->crtc->base.id;
2041 else
2042 plane_resp->crtc_id = 0;
2043
2044 if (plane->fb)
2045 plane_resp->fb_id = plane->fb->base.id;
2046 else
2047 plane_resp->fb_id = 0;
2048
2049 plane_resp->plane_id = plane->base.id;
2050 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2051 plane_resp->gamma_size = 0;
8cf5c917
JB		 2052
2053 /*
2054 * This ioctl is called twice, once to determine how much space is
2055 * needed, and the 2nd time to fill it.
2056 */
2057 if (plane->format_count &&
2058 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2059 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2060 if (copy_to_user(format_ptr,
2061 plane->format_types,
2062 sizeof(uint32_t) * plane->format_count)) {
2063 ret = -EFAULT;
2064 goto out;
2065 }
2066 }
2067 plane_resp->count_format_types = plane->format_count;
2068
2069out:
84849903 2070 drm_modeset_unlock_all(dev);
8cf5c917
JB		 2071 return ret;
2072}
2073
2074/**
c8e32cc1 2075 * drm_mode_setplane - configure a plane's configuration
8cf5c917
JB		 2076 * @dev: DRM device
2077 * @data: ioctl data*
065a50ed 2078 * @file_priv: DRM file info
8cf5c917 2079 *
c8e32cc1 2080 * Set plane configuration, including placement, fb, scaling, and other factors.
8cf5c917 2081 * Or pass a NULL fb to disable.
c8e32cc1
DV		 2082 *
2083 * Returns:
2084 * Zero on success, errno on failure.
8cf5c917
JB		 2085 */
2086int drm_mode_setplane(struct drm_device *dev, void *data,
c8e32cc1 2087 struct drm_file *file_priv)
8cf5c917
JB		 2088{
2089 struct drm_mode_set_plane *plane_req = data;
8cf5c917
JB		 2090 struct drm_plane *plane;
2091 struct drm_crtc *crtc;
6c2a7532 2092 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
8cf5c917 2093 int ret = 0;
42ef8789 2094 unsigned int fb_width, fb_height;
62443be6 2095 int i;
8cf5c917
JB		 2096
2097 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2098 return -EINVAL;
2099
8cf5c917
JB		 2100 /*
2101 * First, find the plane, crtc, and fb objects. If not available,
2102 * we don't bother to call the driver.
2103 */
a2b34e22
RC		 2104 plane = drm_plane_find(dev, plane_req->plane_id);
2105 if (!plane) {
8cf5c917
JB		 2106 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2107 plane_req->plane_id);
6c2a7532 2108 return -ENOENT;
8cf5c917 2109 }
8cf5c917
JB		 2110
2111 /* No fb means shut it down */
2112 if (!plane_req->fb_id) {
6c2a7532
DV		 2113 drm_modeset_lock_all(dev);
2114 old_fb = plane->fb;
731cce48
DV		 2115 ret = plane->funcs->disable_plane(plane);
2116 if (!ret) {
2117 plane->crtc = NULL;
2118 plane->fb = NULL;
2119 } else {
2120 old_fb = NULL;
2121 }
6c2a7532 2122 drm_modeset_unlock_all(dev);
8cf5c917
JB		 2123 goto out;
2124 }
2125
a2b34e22
RC		 2126 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2127 if (!crtc) {
8cf5c917
JB		 2128 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2129 plane_req->crtc_id);
2130 ret = -ENOENT;
2131 goto out;
2132 }
8cf5c917 2133
786b99ed
DV		 2134 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2135 if (!fb) {
8cf5c917
JB		 2136 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2137 plane_req->fb_id);
2138 ret = -ENOENT;
2139 goto out;
2140 }
8cf5c917 2141
62443be6
VS		 2142 /* Check whether this plane supports the fb pixel format. */
2143 for (i = 0; i < plane->format_count; i++)
2144 if (fb->pixel_format == plane->format_types[i])
2145 break;
2146 if (i == plane->format_count) {
6ba6d03e
VS		 2147 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2148 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2149 ret = -EINVAL;
2150 goto out;
2151 }
2152
42ef8789
VS		 2153 fb_width = fb->width << 16;
2154 fb_height = fb->height << 16;
2155
2156 /* Make sure source coordinates are inside the fb. */
2157 if (plane_req->src_w > fb_width ||
2158 plane_req->src_x > fb_width - plane_req->src_w ||
2159 plane_req->src_h > fb_height ||
2160 plane_req->src_y > fb_height - plane_req->src_h) {
2161 DRM_DEBUG_KMS("Invalid source coordinates "
2162 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2163 plane_req->src_w >> 16,
2164 ((plane_req->src_w & 0xffff) * 15625) >> 10,
2165 plane_req->src_h >> 16,
2166 ((plane_req->src_h & 0xffff) * 15625) >> 10,
2167 plane_req->src_x >> 16,
2168 ((plane_req->src_x & 0xffff) * 15625) >> 10,
2169 plane_req->src_y >> 16,
2170 ((plane_req->src_y & 0xffff) * 15625) >> 10);
2171 ret = -ENOSPC;
2172 goto out;
2173 }
2174
687a0400
VS		 2175 /* Give drivers some help against integer overflows */
2176 if (plane_req->crtc_w > INT_MAX ||
2177 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2178 plane_req->crtc_h > INT_MAX ||
2179 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2180 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2181 plane_req->crtc_w, plane_req->crtc_h,
2182 plane_req->crtc_x, plane_req->crtc_y);
2183 ret = -ERANGE;
2184 goto out;
2185 }
2186
6c2a7532 2187 drm_modeset_lock_all(dev);
0fe27f06 2188 old_fb = plane->fb;
8cf5c917
JB		 2189 ret = plane->funcs->update_plane(plane, crtc, fb,
2190 plane_req->crtc_x, plane_req->crtc_y,
2191 plane_req->crtc_w, plane_req->crtc_h,
2192 plane_req->src_x, plane_req->src_y,
2193 plane_req->src_w, plane_req->src_h);
2194 if (!ret) {
2195 plane->crtc = crtc;
2196 plane->fb = fb;
35f8badc 2197 fb = NULL;
0fe27f06
DV		 2198 } else {
2199 old_fb = NULL;
8cf5c917 2200 }
6c2a7532 2201 drm_modeset_unlock_all(dev);
8cf5c917
JB		 2202
2203out:
6c2a7532
DV		 2204 if (fb)
2205 drm_framebuffer_unreference(fb);
2206 if (old_fb)
2207 drm_framebuffer_unreference(old_fb);
8cf5c917
JB		 2208
2209 return ret;
2210}
2211
2d13b679
DV		 2212/**
2213 * drm_mode_set_config_internal - helper to call ->set_config
2214 * @set: modeset config to set
2215 *
2216 * This is a little helper to wrap internal calls to the ->set_config driver
2217 * interface. The only thing it adds is correct refcounting dance.
c8e32cc1
DV		 2218 *
2219 * Returns:
2220 * Zero on success, errno on failure.
2d13b679
DV		 2221 */
2222int drm_mode_set_config_internal(struct drm_mode_set *set)
2223{
2224 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2225 struct drm_framebuffer *fb;
2226 struct drm_crtc *tmp;
b0d12325
DV		 2227 int ret;
2228
5cef29aa
DV		 2229 /*
2230 * NOTE: ->set_config can also disable other crtcs (if we steal all
2231 * connectors from it), hence we need to refcount the fbs across all
2232 * crtcs. Atomic modeset will have saner semantics ...
2233 */
2234 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
f4510a27 2235 tmp->old_fb = tmp->primary->fb;
5cef29aa 2236
b0d12325 2237 fb = set->fb;
2d13b679 2238
b0d12325
DV		 2239 ret = crtc->funcs->set_config(set);
2240 if (ret == 0) {
e13161af 2241 crtc->primary->crtc = crtc;
0fe27f06 2242 crtc->primary->fb = fb;
5cef29aa 2243 }
cc85e121 2244
5cef29aa 2245 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
f4510a27
MR		 2246 if (tmp->primary->fb)
2247 drm_framebuffer_reference(tmp->primary->fb);
5cef29aa
DV		 2248 if (tmp->old_fb)
2249 drm_framebuffer_unreference(tmp->old_fb);
b0d12325
DV		 2250 }
2251
2252 return ret;
2d13b679
DV		 2253}
2254EXPORT_SYMBOL(drm_mode_set_config_internal);
2255
af93629d
MR		 2256/**
2257 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2258 * CRTC viewport
2259 * @crtc: CRTC that framebuffer will be displayed on
2260 * @x: x panning
2261 * @y: y panning
2262 * @mode: mode that framebuffer will be displayed under
2263 * @fb: framebuffer to check size of
c11e9283 2264 */
af93629d
MR		 2265int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2266 int x, int y,
2267 const struct drm_display_mode *mode,
2268 const struct drm_framebuffer *fb)
c11e9283
DL		 2269
2270{
2271 int hdisplay, vdisplay;
2272
2273 hdisplay = mode->hdisplay;
2274 vdisplay = mode->vdisplay;
2275
a0c1bbb0
DL		 2276 if (drm_mode_is_stereo(mode)) {
2277 struct drm_display_mode adjusted = *mode;
2278
2279 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2280 hdisplay = adjusted.crtc_hdisplay;
2281 vdisplay = adjusted.crtc_vdisplay;
2282 }
2283
c11e9283
DL		 2284 if (crtc->invert_dimensions)
2285 swap(hdisplay, vdisplay);
2286
2287 if (hdisplay > fb->width ||
2288 vdisplay > fb->height ||
2289 x > fb->width - hdisplay ||
2290 y > fb->height - vdisplay) {
2291 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2292 fb->width, fb->height, hdisplay, vdisplay, x, y,
2293 crtc->invert_dimensions ? " (inverted)" : "");
2294 return -ENOSPC;
2295 }
2296
2297 return 0;
2298}
af93629d 2299EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2300
f453ba04
DA		 2301/**
2302 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2303 * @dev: drm device for the ioctl
2304 * @data: data pointer for the ioctl
2305 * @file_priv: drm file for the ioctl call
f453ba04 2306 *
f453ba04
DA		 2307 * Build a new CRTC configuration based on user request.
2308 *
2309 * Called by the user via ioctl.
2310 *
c8e32cc1 2311 * Returns:
f453ba04
DA		 2312 * Zero on success, errno on failure.
2313 */
2314int drm_mode_setcrtc(struct drm_device *dev, void *data,
2315 struct drm_file *file_priv)
2316{
2317 struct drm_mode_config *config = &dev->mode_config;
2318 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2319 struct drm_crtc *crtc;
f453ba04
DA		 2320 struct drm_connector **connector_set = NULL, *connector;
2321 struct drm_framebuffer *fb = NULL;
2322 struct drm_display_mode *mode = NULL;
2323 struct drm_mode_set set;
2324 uint32_t __user *set_connectors_ptr;
4a1b0714 2325 int ret;
f453ba04
DA		 2326 int i;
2327
fb3b06c8
DA		 2328 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2329 return -EINVAL;
2330
1d97e915
VS		 2331 /* For some reason crtc x/y offsets are signed internally. */
2332 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2333 return -ERANGE;
2334
84849903 2335 drm_modeset_lock_all(dev);
a2b34e22
RC		 2336 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2337 if (!crtc) {
58367ed6 2338 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2339 ret = -ENOENT;
f453ba04
DA		 2340 goto out;
2341 }
9440106b 2342 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 2343
2344 if (crtc_req->mode_valid) {
2345 /* If we have a mode we need a framebuffer. */
2346 /* If we pass -1, set the mode with the currently bound fb */
2347 if (crtc_req->fb_id == -1) {
f4510a27 2348 if (!crtc->primary->fb) {
6653cc8d
VS		 2349 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2350 ret = -EINVAL;
2351 goto out;
f453ba04 2352 }
f4510a27 2353 fb = crtc->primary->fb;
b0d12325
DV		 2354 /* Make refcounting symmetric with the lookup path. */
2355 drm_framebuffer_reference(fb);
f453ba04 2356 } else {
786b99ed
DV		 2357 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2358 if (!fb) {
58367ed6
ZY		 2359 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2360 crtc_req->fb_id);
37c4e705 2361 ret = -ENOENT;
f453ba04
DA		 2362 goto out;
2363 }
f453ba04
DA		 2364 }
2365
2366 mode = drm_mode_create(dev);
ee34ab5b
VS		 2367 if (!mode) {
2368 ret = -ENOMEM;
2369 goto out;
2370 }
2371
90367bf6
VS		 2372 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2373 if (ret) {
2374 DRM_DEBUG_KMS("Invalid mode\n");
2375 goto out;
2376 }
2377
f453ba04 2378 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2379
c11e9283
DL		 2380 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2381 mode, fb);
2382 if (ret)
5f61bb42 2383 goto out;
c11e9283 2384
f453ba04
DA		 2385 }
2386
2387 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2388 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2389 ret = -EINVAL;
2390 goto out;
2391 }
2392
7781de74 2393 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2394 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2395 crtc_req->count_connectors);
2396 ret = -EINVAL;
2397 goto out;
2398 }
2399
2400 if (crtc_req->count_connectors > 0) {
2401 u32 out_id;
2402
2403 /* Avoid unbounded kernel memory allocation */
2404 if (crtc_req->count_connectors > config->num_connector) {
2405 ret = -EINVAL;
2406 goto out;
2407 }
2408
2409 connector_set = kmalloc(crtc_req->count_connectors *
2410 sizeof(struct drm_connector *),
2411 GFP_KERNEL);
2412 if (!connector_set) {
2413 ret = -ENOMEM;
2414 goto out;
2415 }
2416
2417 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2418 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2419 if (get_user(out_id, &set_connectors_ptr[i])) {
2420 ret = -EFAULT;
2421 goto out;
2422 }
2423
a2b34e22
RC		 2424 connector = drm_connector_find(dev, out_id);
2425 if (!connector) {
58367ed6
ZY		 2426 DRM_DEBUG_KMS("Connector id %d unknown\n",
2427 out_id);
f27657f2 2428 ret = -ENOENT;
f453ba04
DA		 2429 goto out;
2430 }
9440106b
JG		 2431 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2432 connector->base.id,
25933820 2433 connector->name);
f453ba04
DA		 2434
2435 connector_set[i] = connector;
2436 }
2437 }
2438
2439 set.crtc = crtc;
2440 set.x = crtc_req->x;
2441 set.y = crtc_req->y;
2442 set.mode = mode;
2443 set.connectors = connector_set;
2444 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2445 set.fb = fb;
2d13b679 2446 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2447
2448out:
b0d12325
DV		 2449 if (fb)
2450 drm_framebuffer_unreference(fb);
2451
f453ba04 2452 kfree(connector_set);
ee34ab5b 2453 drm_mode_destroy(dev, mode);
84849903 2454 drm_modeset_unlock_all(dev);
f453ba04
DA		 2455 return ret;
2456}
2457
4c813d4d
DA		 2458static int drm_mode_cursor_common(struct drm_device *dev,
2459 struct drm_mode_cursor2 *req,
2460 struct drm_file *file_priv)
f453ba04 2461{
f453ba04
DA		 2462 struct drm_crtc *crtc;
2463 int ret = 0;
2464
fb3b06c8
DA		 2465 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2466 return -EINVAL;
2467
7c4eaca4 2468 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 2469 return -EINVAL;
f453ba04 2470
a2b34e22
RC		 2471 crtc = drm_crtc_find(dev, req->crtc_id);
2472 if (!crtc) {
58367ed6 2473 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 2474 return -ENOENT;
f453ba04 2475 }
f453ba04 2476
dac35663 2477 mutex_lock(&crtc->mutex);
f453ba04 2478 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 2479 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 2480 ret = -ENXIO;
2481 goto out;
2482 }
2483 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 2484 if (crtc->funcs->cursor_set2)
2485 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2486 req->width, req->height, req->hot_x, req->hot_y);
2487 else
2488 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2489 req->width, req->height);
f453ba04
DA		 2490 }
2491
2492 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2493 if (crtc->funcs->cursor_move) {
2494 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2495 } else {
f453ba04
DA		 2496 ret = -EFAULT;
2497 goto out;
2498 }
2499 }
2500out:
dac35663
DV		 2501 mutex_unlock(&crtc->mutex);
2502
f453ba04 2503 return ret;
4c813d4d
DA		 2504
2505}
c8e32cc1
DV		 2506
2507
2508/**
2509 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2510 * @dev: drm device for the ioctl
2511 * @data: data pointer for the ioctl
2512 * @file_priv: drm file for the ioctl call
2513 *
2514 * Set the cursor configuration based on user request.
2515 *
2516 * Called by the user via ioctl.
2517 *
2518 * Returns:
2519 * Zero on success, errno on failure.
2520 */
4c813d4d 2521int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 2522 void *data, struct drm_file *file_priv)
4c813d4d
DA		 2523{
2524 struct drm_mode_cursor *req = data;
2525 struct drm_mode_cursor2 new_req;
2526
2527 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2528 new_req.hot_x = new_req.hot_y = 0;
2529
2530 return drm_mode_cursor_common(dev, &new_req, file_priv);
2531}
2532
c8e32cc1
DV		 2533/**
2534 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2535 * @dev: drm device for the ioctl
2536 * @data: data pointer for the ioctl
2537 * @file_priv: drm file for the ioctl call
2538 *
2539 * Set the cursor configuration based on user request. This implements the 2nd
2540 * version of the cursor ioctl, which allows userspace to additionally specify
2541 * the hotspot of the pointer.
2542 *
2543 * Called by the user via ioctl.
2544 *
2545 * Returns:
2546 * Zero on success, errno on failure.
2547 */
4c813d4d
DA		 2548int drm_mode_cursor2_ioctl(struct drm_device *dev,
2549 void *data, struct drm_file *file_priv)
2550{
2551 struct drm_mode_cursor2 *req = data;
2552 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 2553}
2554
c8e32cc1
DV		 2555/**
2556 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2557 * @bpp: bits per pixels
2558 * @depth: bit depth per pixel
2559 *
2560 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2561 * Useful in fbdev emulation code, since that deals in those values.
2562 */
308e5bcb
JB		 2563uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2564{
2565 uint32_t fmt;
2566
2567 switch (bpp) {
2568 case 8:
d84f031b 2569 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 2570 break;
2571 case 16:
2572 if (depth == 15)
04b3924d 2573 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 2574 else
04b3924d 2575 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 2576 break;
2577 case 24:
04b3924d 2578 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 2579 break;
2580 case 32:
2581 if (depth == 24)
04b3924d 2582 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 2583 else if (depth == 30)
04b3924d 2584 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 2585 else
04b3924d 2586 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 2587 break;
2588 default:
04b3924d
VS		 2589 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2590 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 2591 break;
2592 }
2593
2594 return fmt;
2595}
2596EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2597
f453ba04
DA		 2598/**
2599 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 2600 * @dev: drm device for the ioctl
2601 * @data: data pointer for the ioctl
2602 * @file_priv: drm file for the ioctl call
f453ba04 2603 *
c8e32cc1
DV		 2604 * Add a new FB to the specified CRTC, given a user request. This is the
2605 * original addfb ioclt which only supported RGB formats.
f453ba04
DA		 2606 *
2607 * Called by the user via ioctl.
2608 *
c8e32cc1 2609 * Returns:
f453ba04
DA		 2610 * Zero on success, errno on failure.
2611 */
2612int drm_mode_addfb(struct drm_device *dev,
2613 void *data, struct drm_file *file_priv)
2614{
308e5bcb
JB		 2615 struct drm_mode_fb_cmd *or = data;
2616 struct drm_mode_fb_cmd2 r = {};
2617 struct drm_mode_config *config = &dev->mode_config;
2618 struct drm_framebuffer *fb;
2619 int ret = 0;
2620
2621 /* Use new struct with format internally */
2622 r.fb_id = or->fb_id;
2623 r.width = or->width;
2624 r.height = or->height;
2625 r.pitches[0] = or->pitch;
2626 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2627 r.handles[0] = or->handle;
2628
2629 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2630 return -EINVAL;
2631
acb4b992 2632 if ((config->min_width > r.width) || (r.width > config->max_width))
308e5bcb 2633 return -EINVAL;
acb4b992
JB		 2634
2635 if ((config->min_height > r.height) || (r.height > config->max_height))
308e5bcb 2636 return -EINVAL;
308e5bcb 2637
308e5bcb
JB		 2638 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2639 if (IS_ERR(fb)) {
1aa1b11c 2640 DRM_DEBUG_KMS("could not create framebuffer\n");
4b096ac1 2641 return PTR_ERR(fb);
308e5bcb
JB		 2642 }
2643
4b096ac1 2644 mutex_lock(&file_priv->fbs_lock);
308e5bcb
JB		 2645 or->fb_id = fb->base.id;
2646 list_add(&fb->filp_head, &file_priv->fbs);
2647 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
4b096ac1 2648 mutex_unlock(&file_priv->fbs_lock);
4b096ac1 2649
308e5bcb
JB		 2650 return ret;
2651}
2652
cff91b62 2653static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 2654{
2655 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2656
2657 switch (format) {
2658 case DRM_FORMAT_C8:
2659 case DRM_FORMAT_RGB332:
2660 case DRM_FORMAT_BGR233:
2661 case DRM_FORMAT_XRGB4444:
2662 case DRM_FORMAT_XBGR4444:
2663 case DRM_FORMAT_RGBX4444:
2664 case DRM_FORMAT_BGRX4444:
2665 case DRM_FORMAT_ARGB4444:
2666 case DRM_FORMAT_ABGR4444:
2667 case DRM_FORMAT_RGBA4444:
2668 case DRM_FORMAT_BGRA4444:
2669 case DRM_FORMAT_XRGB1555:
2670 case DRM_FORMAT_XBGR1555:
2671 case DRM_FORMAT_RGBX5551:
2672 case DRM_FORMAT_BGRX5551:
2673 case DRM_FORMAT_ARGB1555:
2674 case DRM_FORMAT_ABGR1555:
2675 case DRM_FORMAT_RGBA5551:
2676 case DRM_FORMAT_BGRA5551:
2677 case DRM_FORMAT_RGB565:
2678 case DRM_FORMAT_BGR565:
2679 case DRM_FORMAT_RGB888:
2680 case DRM_FORMAT_BGR888:
2681 case DRM_FORMAT_XRGB8888:
2682 case DRM_FORMAT_XBGR8888:
2683 case DRM_FORMAT_RGBX8888:
2684 case DRM_FORMAT_BGRX8888:
2685 case DRM_FORMAT_ARGB8888:
2686 case DRM_FORMAT_ABGR8888:
2687 case DRM_FORMAT_RGBA8888:
2688 case DRM_FORMAT_BGRA8888:
2689 case DRM_FORMAT_XRGB2101010:
2690 case DRM_FORMAT_XBGR2101010:
2691 case DRM_FORMAT_RGBX1010102:
2692 case DRM_FORMAT_BGRX1010102:
2693 case DRM_FORMAT_ARGB2101010:
2694 case DRM_FORMAT_ABGR2101010:
2695 case DRM_FORMAT_RGBA1010102:
2696 case DRM_FORMAT_BGRA1010102:
2697 case DRM_FORMAT_YUYV:
2698 case DRM_FORMAT_YVYU:
2699 case DRM_FORMAT_UYVY:
2700 case DRM_FORMAT_VYUY:
2701 case DRM_FORMAT_AYUV:
2702 case DRM_FORMAT_NV12:
2703 case DRM_FORMAT_NV21:
2704 case DRM_FORMAT_NV16:
2705 case DRM_FORMAT_NV61:
ba623f6a
LP		 2706 case DRM_FORMAT_NV24:
2707 case DRM_FORMAT_NV42:
935b5977
VS		 2708 case DRM_FORMAT_YUV410:
2709 case DRM_FORMAT_YVU410:
2710 case DRM_FORMAT_YUV411:
2711 case DRM_FORMAT_YVU411:
2712 case DRM_FORMAT_YUV420:
2713 case DRM_FORMAT_YVU420:
2714 case DRM_FORMAT_YUV422:
2715 case DRM_FORMAT_YVU422:
2716 case DRM_FORMAT_YUV444:
2717 case DRM_FORMAT_YVU444:
2718 return 0;
2719 default:
23c453a4
VS		 2720 DRM_DEBUG_KMS("invalid pixel format %s\n",
2721 drm_get_format_name(r->pixel_format));
935b5977
VS		 2722 return -EINVAL;
2723 }
2724}
2725
cff91b62 2726static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 2727{
2728 int ret, hsub, vsub, num_planes, i;
2729
2730 ret = format_check(r);
2731 if (ret) {
6ba6d03e
VS		 2732 DRM_DEBUG_KMS("bad framebuffer format %s\n",
2733 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 2734 return ret;
2735 }
2736
2737 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2738 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2739 num_planes = drm_format_num_planes(r->pixel_format);
2740
2741 if (r->width == 0 || r->width % hsub) {
1aa1b11c 2742 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
d1b45d5f
VS		 2743 return -EINVAL;
2744 }
2745
2746 if (r->height == 0 || r->height % vsub) {
1aa1b11c 2747 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 2748 return -EINVAL;
2749 }
2750
2751 for (i = 0; i < num_planes; i++) {
2752 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 2753 unsigned int height = r->height / (i != 0 ? vsub : 1);
2754 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 2755
2756 if (!r->handles[i]) {
1aa1b11c 2757 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 2758 return -EINVAL;
2759 }
2760
b180b5d1
VS		 2761 if ((uint64_t) width * cpp > UINT_MAX)
2762 return -ERANGE;
2763
2764 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2765 return -ERANGE;
2766
2767 if (r->pitches[i] < width * cpp) {
1aa1b11c 2768 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 2769 return -EINVAL;
2770 }
2771 }
2772
2773 return 0;
2774}
2775
308e5bcb
JB		 2776/**
2777 * drm_mode_addfb2 - add an FB to the graphics configuration
065a50ed
DV		 2778 * @dev: drm device for the ioctl
2779 * @data: data pointer for the ioctl
2780 * @file_priv: drm file for the ioctl call
308e5bcb 2781 *
c8e32cc1
DV		 2782 * Add a new FB to the specified CRTC, given a user request with format. This is
2783 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
2784 * and uses fourcc codes as pixel format specifiers.
308e5bcb
JB		 2785 *
2786 * Called by the user via ioctl.
2787 *
c8e32cc1 2788 * Returns:
308e5bcb
JB		 2789 * Zero on success, errno on failure.
2790 */
2791int drm_mode_addfb2(struct drm_device *dev,
2792 void *data, struct drm_file *file_priv)
2793{
2794 struct drm_mode_fb_cmd2 *r = data;
f453ba04
DA		 2795 struct drm_mode_config *config = &dev->mode_config;
2796 struct drm_framebuffer *fb;
4a1b0714 2797 int ret;
f453ba04 2798
fb3b06c8
DA		 2799 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2800 return -EINVAL;
2801
e3cc3520
VS		 2802 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2803 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2804 return -EINVAL;
2805 }
2806
f453ba04 2807 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 2808 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 2809 r->width, config->min_width, config->max_width);
f453ba04
DA		 2810 return -EINVAL;
2811 }
2812 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 2813 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 2814 r->height, config->min_height, config->max_height);
f453ba04
DA		 2815 return -EINVAL;
2816 }
2817
d1b45d5f
VS		 2818 ret = framebuffer_check(r);
2819 if (ret)
935b5977 2820 return ret;
935b5977 2821
f453ba04 2822 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 2823 if (IS_ERR(fb)) {
1aa1b11c 2824 DRM_DEBUG_KMS("could not create framebuffer\n");
4b096ac1 2825 return PTR_ERR(fb);
f453ba04
DA		 2826 }
2827
4b096ac1 2828 mutex_lock(&file_priv->fbs_lock);
e0c8463a 2829 r->fb_id = fb->base.id;
f453ba04 2830 list_add(&fb->filp_head, &file_priv->fbs);
9440106b 2831 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
4b096ac1 2832 mutex_unlock(&file_priv->fbs_lock);
f453ba04 2833
4b096ac1 2834
f453ba04
DA		 2835 return ret;
2836}
2837
2838/**
2839 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 2840 * @dev: drm device for the ioctl
2841 * @data: data pointer for the ioctl
2842 * @file_priv: drm file for the ioctl call
f453ba04 2843 *
f453ba04
DA		 2844 * Remove the FB specified by the user.
2845 *
2846 * Called by the user via ioctl.
2847 *
c8e32cc1 2848 * Returns:
f453ba04
DA		 2849 * Zero on success, errno on failure.
2850 */
2851int drm_mode_rmfb(struct drm_device *dev,
2852 void *data, struct drm_file *file_priv)
2853{
f453ba04
DA		 2854 struct drm_framebuffer *fb = NULL;
2855 struct drm_framebuffer *fbl = NULL;
2856 uint32_t *id = data;
f453ba04
DA		 2857 int found = 0;
2858
fb3b06c8
DA		 2859 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2860 return -EINVAL;
2861
4b096ac1 2862 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 2863 mutex_lock(&dev->mode_config.fb_lock);
2864 fb = __drm_framebuffer_lookup(dev, *id);
2865 if (!fb)
2866 goto fail_lookup;
2867
f453ba04
DA		 2868 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2869 if (fb == fbl)
2870 found = 1;
2b677e8c
DV		 2871 if (!found)
2872 goto fail_lookup;
2873
2874 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2875 __drm_framebuffer_unregister(dev, fb);
f453ba04 2876
4b096ac1 2877 list_del_init(&fb->filp_head);
2b677e8c 2878 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 2879 mutex_unlock(&file_priv->fbs_lock);
f453ba04 2880
4b096ac1 2881 drm_framebuffer_remove(fb);
4b096ac1 2882
2b677e8c
DV		 2883 return 0;
2884
2885fail_lookup:
2886 mutex_unlock(&dev->mode_config.fb_lock);
2887 mutex_unlock(&file_priv->fbs_lock);
2888
37c4e705 2889 return -ENOENT;
f453ba04
DA		 2890}
2891
2892/**
2893 * drm_mode_getfb - get FB info
065a50ed
DV		 2894 * @dev: drm device for the ioctl
2895 * @data: data pointer for the ioctl
2896 * @file_priv: drm file for the ioctl call
f453ba04 2897 *
f453ba04
DA		 2898 * Lookup the FB given its ID and return info about it.
2899 *
2900 * Called by the user via ioctl.
2901 *
c8e32cc1 2902 * Returns:
f453ba04
DA		 2903 * Zero on success, errno on failure.
2904 */
2905int drm_mode_getfb(struct drm_device *dev,
2906 void *data, struct drm_file *file_priv)
2907{
2908 struct drm_mode_fb_cmd *r = data;
f453ba04 2909 struct drm_framebuffer *fb;
58c0dca1 2910 int ret;
f453ba04 2911
fb3b06c8
DA		 2912 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2913 return -EINVAL;
2914
786b99ed 2915 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 2916 if (!fb)
37c4e705 2917 return -ENOENT;
f453ba04
DA		 2918
2919 r->height = fb->height;
2920 r->width = fb->width;
2921 r->depth = fb->depth;
2922 r->bpp = fb->bits_per_pixel;
01f2c773 2923 r->pitch = fb->pitches[0];
101b96f3 2924 if (fb->funcs->create_handle) {
09f308f7 2925 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 2926 drm_is_control_client(file_priv)) {
101b96f3
DH		 2927 ret = fb->funcs->create_handle(fb, file_priv,
2928 &r->handle);
2929 } else {
2930 /* GET_FB() is an unprivileged ioctl so we must not
2931 * return a buffer-handle to non-master processes! For
2932 * backwards-compatibility reasons, we cannot make
2933 * GET_FB() privileged, so just return an invalid handle
2934 * for non-masters. */
2935 r->handle = 0;
2936 ret = 0;
2937 }
2938 } else {
af26ef3b 2939 ret = -ENODEV;
101b96f3 2940 }
f453ba04 2941
58c0dca1
DV		 2942 drm_framebuffer_unreference(fb);
2943
f453ba04
DA		 2944 return ret;
2945}
2946
c8e32cc1
DV		 2947/**
2948 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
2949 * @dev: drm device for the ioctl
2950 * @data: data pointer for the ioctl
2951 * @file_priv: drm file for the ioctl call
2952 *
2953 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
2954 * rectangle list. Generic userspace which does frontbuffer rendering must call
2955 * this ioctl to flush out the changes on manual-update display outputs, e.g.
2956 * usb display-link, mipi manual update panels or edp panel self refresh modes.
2957 *
2958 * Modesetting drivers which always update the frontbuffer do not need to
2959 * implement the corresponding ->dirty framebuffer callback.
2960 *
2961 * Called by the user via ioctl.
2962 *
2963 * Returns:
2964 * Zero on success, errno on failure.
2965 */
884840aa
JB		 2966int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2967 void *data, struct drm_file *file_priv)
2968{
2969 struct drm_clip_rect __user *clips_ptr;
2970 struct drm_clip_rect *clips = NULL;
2971 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 2972 struct drm_framebuffer *fb;
2973 unsigned flags;
2974 int num_clips;
4a1b0714 2975 int ret;
884840aa 2976
fb3b06c8
DA		 2977 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2978 return -EINVAL;
2979
786b99ed 2980 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 2981 if (!fb)
37c4e705 2982 return -ENOENT;
884840aa
JB		 2983
2984 num_clips = r->num_clips;
81f6c7f8 2985 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 2986
2987 if (!num_clips != !clips_ptr) {
2988 ret = -EINVAL;
2989 goto out_err1;
2990 }
2991
2992 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2993
2994 /* If userspace annotates copy, clips must come in pairs */
2995 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2996 ret = -EINVAL;
2997 goto out_err1;
2998 }
2999
3000 if (num_clips && clips_ptr) {
a5cd3351
XW		 3001 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3002 ret = -EINVAL;
3003 goto out_err1;
3004 }
884840aa
JB		 3005 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3006 if (!clips) {
3007 ret = -ENOMEM;
3008 goto out_err1;
3009 }
3010
3011 ret = copy_from_user(clips, clips_ptr,
3012 num_clips * sizeof(*clips));
e902a358
DC		 3013 if (ret) {
3014 ret = -EFAULT;
884840aa 3015 goto out_err2;
e902a358 3016 }
884840aa
JB		 3017 }
3018
3019 if (fb->funcs->dirty) {
02b00162
TH		 3020 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3021 clips, num_clips);
884840aa
JB		 3022 } else {
3023 ret = -ENOSYS;
884840aa
JB		 3024 }
3025
3026out_err2:
3027 kfree(clips);
3028out_err1:
4ccf097f
DV		 3029 drm_framebuffer_unreference(fb);
3030
884840aa
JB		 3031 return ret;
3032}
3033
3034
f453ba04
DA		 3035/**
3036 * drm_fb_release - remove and free the FBs on this file
065a50ed 3037 * @priv: drm file for the ioctl
f453ba04 3038 *
f453ba04
DA		 3039 * Destroy all the FBs associated with @filp.
3040 *
3041 * Called by the user via ioctl.
3042 *
c8e32cc1 3043 * Returns:
f453ba04
DA		 3044 * Zero on success, errno on failure.
3045 */
ea39f835 3046void drm_fb_release(struct drm_file *priv)
f453ba04 3047{
f453ba04
DA		 3048 struct drm_device *dev = priv->minor->dev;
3049 struct drm_framebuffer *fb, *tfb;
3050
4b096ac1 3051 mutex_lock(&priv->fbs_lock);
f453ba04 3052 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2b677e8c
DV		 3053
3054 mutex_lock(&dev->mode_config.fb_lock);
3055 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3056 __drm_framebuffer_unregister(dev, fb);
3057 mutex_unlock(&dev->mode_config.fb_lock);
3058
4b096ac1 3059 list_del_init(&fb->filp_head);
2b677e8c
DV		 3060
3061 /* This will also drop the fpriv->fbs reference. */
f7eff60e 3062 drm_framebuffer_remove(fb);
f453ba04 3063 }
4b096ac1 3064 mutex_unlock(&priv->fbs_lock);
f453ba04
DA		 3065}
3066
c8e32cc1
DV		 3067/**
3068 * drm_property_create - create a new property type
3069 * @dev: drm device
3070 * @flags: flags specifying the property type
3071 * @name: name of the property
3072 * @num_values: number of pre-defined values
3073 *
3074 * This creates a new generic drm property which can then be attached to a drm
3075 * object with drm_object_attach_property. The returned property object must be
3076 * freed with drm_property_destroy.
3077 *
3078 * Returns:
3079 * A pointer to the newly created property on success, NULL on failure.
3080 */
f453ba04
DA		 3081struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3082 const char *name, int num_values)
3083{
3084 struct drm_property *property = NULL;
6bfc56aa 3085 int ret;
f453ba04
DA		 3086
3087 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3088 if (!property)
3089 return NULL;
3090
98f75de4
RC		 3091 property->dev = dev;
3092
f453ba04
DA		 3093 if (num_values) {
3094 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3095 if (!property->values)
3096 goto fail;
3097 }
3098
6bfc56aa
VS		 3099 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3100 if (ret)
3101 goto fail;
3102
f453ba04
DA		 3103 property->flags = flags;
3104 property->num_values = num_values;
3105 INIT_LIST_HEAD(&property->enum_blob_list);
3106
471dd2ef 3107 if (name) {
f453ba04 3108 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3109 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3110 }
f453ba04
DA		 3111
3112 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3113
3114 WARN_ON(!drm_property_type_valid(property));
3115
f453ba04
DA		 3116 return property;
3117fail:
6bfc56aa 3118 kfree(property->values);
f453ba04
DA		 3119 kfree(property);
3120 return NULL;
3121}
3122EXPORT_SYMBOL(drm_property_create);
3123
c8e32cc1
DV		 3124/**
3125 * drm_property_create - create a new enumeration property type
3126 * @dev: drm device
3127 * @flags: flags specifying the property type
3128 * @name: name of the property
3129 * @props: enumeration lists with property values
3130 * @num_values: number of pre-defined values
3131 *
3132 * This creates a new generic drm property which can then be attached to a drm
3133 * object with drm_object_attach_property. The returned property object must be
3134 * freed with drm_property_destroy.
3135 *
3136 * Userspace is only allowed to set one of the predefined values for enumeration
3137 * properties.
3138 *
3139 * Returns:
3140 * A pointer to the newly created property on success, NULL on failure.
3141 */
4a67d391
SH		 3142struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3143 const char *name,
3144 const struct drm_prop_enum_list *props,
3145 int num_values)
3146{
3147 struct drm_property *property;
3148 int i, ret;
3149
3150 flags |= DRM_MODE_PROP_ENUM;
3151
3152 property = drm_property_create(dev, flags, name, num_values);
3153 if (!property)
3154 return NULL;
3155
3156 for (i = 0; i < num_values; i++) {
3157 ret = drm_property_add_enum(property, i,
3158 props[i].type,
3159 props[i].name);
3160 if (ret) {
3161 drm_property_destroy(dev, property);
3162 return NULL;
3163 }
3164 }
3165
3166 return property;
3167}
3168EXPORT_SYMBOL(drm_property_create_enum);
3169
c8e32cc1
DV		 3170/**
3171 * drm_property_create - create a new bitmask property type
3172 * @dev: drm device
3173 * @flags: flags specifying the property type
3174 * @name: name of the property
3175 * @props: enumeration lists with property bitflags
3176 * @num_values: number of pre-defined values
3177 *
3178 * This creates a new generic drm property which can then be attached to a drm
3179 * object with drm_object_attach_property. The returned property object must be
3180 * freed with drm_property_destroy.
3181 *
3182 * Compared to plain enumeration properties userspace is allowed to set any
3183 * or'ed together combination of the predefined property bitflag values
3184 *
3185 * Returns:
3186 * A pointer to the newly created property on success, NULL on failure.
3187 */
49e27545
RC		 3188struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3189 int flags, const char *name,
3190 const struct drm_prop_enum_list *props,
3191 int num_values)
3192{
3193 struct drm_property *property;
3194 int i, ret;
3195
3196 flags |= DRM_MODE_PROP_BITMASK;
3197
3198 property = drm_property_create(dev, flags, name, num_values);
3199 if (!property)
3200 return NULL;
3201
3202 for (i = 0; i < num_values; i++) {
3203 ret = drm_property_add_enum(property, i,
3204 props[i].type,
3205 props[i].name);
3206 if (ret) {
3207 drm_property_destroy(dev, property);
3208 return NULL;
3209 }
3210 }
3211
3212 return property;
3213}
3214EXPORT_SYMBOL(drm_property_create_bitmask);
3215
ebc44cf3
RC		 3216static struct drm_property *property_create_range(struct drm_device *dev,
3217 int flags, const char *name,
3218 uint64_t min, uint64_t max)
3219{
3220 struct drm_property *property;
3221
3222 property = drm_property_create(dev, flags, name, 2);
3223 if (!property)
3224 return NULL;
3225
3226 property->values[0] = min;
3227 property->values[1] = max;
3228
3229 return property;
3230}
3231
c8e32cc1
DV		 3232/**
3233 * drm_property_create - create a new ranged property type
3234 * @dev: drm device
3235 * @flags: flags specifying the property type
3236 * @name: name of the property
3237 * @min: minimum value of the property
3238 * @max: maximum value of the property
3239 *
3240 * This creates a new generic drm property which can then be attached to a drm
3241 * object with drm_object_attach_property. The returned property object must be
3242 * freed with drm_property_destroy.
3243 *
3244 * Userspace is allowed to set any interger value in the (min, max) range
3245 * inclusive.
3246 *
3247 * Returns:
3248 * A pointer to the newly created property on success, NULL on failure.
3249 */
d9bc3c02
SH		 3250struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3251 const char *name,
3252 uint64_t min, uint64_t max)
3253{
ebc44cf3
RC		 3254 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3255 name, min, max);
d9bc3c02
SH		 3256}
3257EXPORT_SYMBOL(drm_property_create_range);
3258
ebc44cf3
RC		 3259struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3260 int flags, const char *name,
3261 int64_t min, int64_t max)
3262{
3263 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3264 name, I642U64(min), I642U64(max));
3265}
3266EXPORT_SYMBOL(drm_property_create_signed_range);
3267
98f75de4
RC		 3268struct drm_property *drm_property_create_object(struct drm_device *dev,
3269 int flags, const char *name, uint32_t type)
3270{
3271 struct drm_property *property;
3272
3273 flags |= DRM_MODE_PROP_OBJECT;
3274
3275 property = drm_property_create(dev, flags, name, 1);
3276 if (!property)
3277 return NULL;
3278
3279 property->values[0] = type;
3280
3281 return property;
3282}
3283EXPORT_SYMBOL(drm_property_create_object);
3284
c8e32cc1
DV		 3285/**
3286 * drm_property_add_enum - add a possible value to an enumeration property
3287 * @property: enumeration property to change
3288 * @index: index of the new enumeration
3289 * @value: value of the new enumeration
3290 * @name: symbolic name of the new enumeration
3291 *
3292 * This functions adds enumerations to a property.
3293 *
3294 * It's use is deprecated, drivers should use one of the more specific helpers
3295 * to directly create the property with all enumerations already attached.
3296 *
3297 * Returns:
3298 * Zero on success, error code on failure.
3299 */
f453ba04
DA		 3300int drm_property_add_enum(struct drm_property *property, int index,
3301 uint64_t value, const char *name)
3302{
3303 struct drm_property_enum *prop_enum;
3304
5ea22f24
RC		 3305 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3306 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 3307 return -EINVAL;
3308
3309 /*
3310 * Bitmask enum properties have the additional constraint of values
3311 * from 0 to 63
3312 */
5ea22f24
RC		 3313 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3314 (value > 63))
f453ba04
DA		 3315 return -EINVAL;
3316
3317 if (!list_empty(&property->enum_blob_list)) {
3318 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3319 if (prop_enum->value == value) {
3320 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3321 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3322 return 0;
3323 }
3324 }
3325 }
3326
3327 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3328 if (!prop_enum)
3329 return -ENOMEM;
3330
3331 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3332 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3333 prop_enum->value = value;
3334
3335 property->values[index] = value;
3336 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3337 return 0;
3338}
3339EXPORT_SYMBOL(drm_property_add_enum);
3340
c8e32cc1
DV		 3341/**
3342 * drm_property_destroy - destroy a drm property
3343 * @dev: drm device
3344 * @property: property to destry
3345 *
3346 * This function frees a property including any attached resources like
3347 * enumeration values.
3348 */
f453ba04
DA		 3349void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3350{
3351 struct drm_property_enum *prop_enum, *pt;
3352
3353 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3354 list_del(&prop_enum->head);
3355 kfree(prop_enum);
3356 }
3357
3358 if (property->num_values)
3359 kfree(property->values);
3360 drm_mode_object_put(dev, &property->base);
3361 list_del(&property->head);
3362 kfree(property);
3363}
3364EXPORT_SYMBOL(drm_property_destroy);
3365
c8e32cc1
DV		 3366/**
3367 * drm_object_attach_property - attach a property to a modeset object
3368 * @obj: drm modeset object
3369 * @property: property to attach
3370 * @init_val: initial value of the property
3371 *
3372 * This attaches the given property to the modeset object with the given initial
3373 * value. Currently this function cannot fail since the properties are stored in
3374 * a statically sized array.
3375 */
c543188a
PZ		 3376void drm_object_attach_property(struct drm_mode_object *obj,
3377 struct drm_property *property,
3378 uint64_t init_val)
3379{
7f88a9be 3380 int count = obj->properties->count;
c543188a 3381
7f88a9be
PZ		 3382 if (count == DRM_OBJECT_MAX_PROPERTY) {
3383 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3384 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3385 "you see this message on the same object type.\n",
3386 obj->type);
3387 return;
c543188a
PZ		 3388 }
3389
7f88a9be
PZ		 3390 obj->properties->ids[count] = property->base.id;
3391 obj->properties->values[count] = init_val;
3392 obj->properties->count++;
c543188a
PZ		 3393}
3394EXPORT_SYMBOL(drm_object_attach_property);
3395
c8e32cc1
DV		 3396/**
3397 * drm_object_property_set_value - set the value of a property
3398 * @obj: drm mode object to set property value for
3399 * @property: property to set
3400 * @val: value the property should be set to
3401 *
3402 * This functions sets a given property on a given object. This function only
3403 * changes the software state of the property, it does not call into the
3404 * driver's ->set_property callback.
3405 *
3406 * Returns:
3407 * Zero on success, error code on failure.
3408 */
c543188a
PZ		 3409int drm_object_property_set_value(struct drm_mode_object *obj,
3410 struct drm_property *property, uint64_t val)
3411{
3412 int i;
3413
7f88a9be 3414 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 3415 if (obj->properties->ids[i] == property->base.id) {
3416 obj->properties->values[i] = val;
3417 return 0;
3418 }
3419 }
3420
3421 return -EINVAL;
3422}
3423EXPORT_SYMBOL(drm_object_property_set_value);
3424
c8e32cc1
DV		 3425/**
3426 * drm_object_property_get_value - retrieve the value of a property
3427 * @obj: drm mode object to get property value from
3428 * @property: property to retrieve
3429 * @val: storage for the property value
3430 *
3431 * This function retrieves the softare state of the given property for the given
3432 * property. Since there is no driver callback to retrieve the current property
3433 * value this might be out of sync with the hardware, depending upon the driver
3434 * and property.
3435 *
3436 * Returns:
3437 * Zero on success, error code on failure.
3438 */
c543188a
PZ		 3439int drm_object_property_get_value(struct drm_mode_object *obj,
3440 struct drm_property *property, uint64_t *val)
3441{
3442 int i;
3443
7f88a9be 3444 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 3445 if (obj->properties->ids[i] == property->base.id) {
3446 *val = obj->properties->values[i];
3447 return 0;
3448 }
3449 }
3450
3451 return -EINVAL;
3452}
3453EXPORT_SYMBOL(drm_object_property_get_value);
3454
c8e32cc1
DV		 3455/**
3456 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3457 * @dev: DRM device
3458 * @data: ioctl data
3459 * @file_priv: DRM file info
3460 *
3461 * This function retrieves the current value for an connectors's property.
3462 *
3463 * Called by the user via ioctl.
3464 *
3465 * Returns:
3466 * Zero on success, errno on failure.
3467 */
f453ba04
DA		 3468int drm_mode_getproperty_ioctl(struct drm_device *dev,
3469 void *data, struct drm_file *file_priv)
3470{
f453ba04
DA		 3471 struct drm_mode_get_property *out_resp = data;
3472 struct drm_property *property;
3473 int enum_count = 0;
3474 int blob_count = 0;
3475 int value_count = 0;
3476 int ret = 0, i;
3477 int copied;
3478 struct drm_property_enum *prop_enum;
3479 struct drm_mode_property_enum __user *enum_ptr;
3480 struct drm_property_blob *prop_blob;
81f6c7f8 3481 uint32_t __user *blob_id_ptr;
f453ba04
DA		 3482 uint64_t __user *values_ptr;
3483 uint32_t __user *blob_length_ptr;
3484
fb3b06c8
DA		 3485 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3486 return -EINVAL;
3487
84849903 3488 drm_modeset_lock_all(dev);
a2b34e22
RC		 3489 property = drm_property_find(dev, out_resp->prop_id);
3490 if (!property) {
f27657f2 3491 ret = -ENOENT;
f453ba04
DA		 3492 goto done;
3493 }
f453ba04 3494
5ea22f24
RC		 3495 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3496 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 3497 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3498 enum_count++;
5ea22f24 3499 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
f453ba04
DA		 3500 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3501 blob_count++;
3502 }
3503
3504 value_count = property->num_values;
3505
3506 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3507 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3508 out_resp->flags = property->flags;
3509
3510 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 3511 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 3512 for (i = 0; i < value_count; i++) {
3513 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3514 ret = -EFAULT;
3515 goto done;
3516 }
3517 }
3518 }
3519 out_resp->count_values = value_count;
3520
5ea22f24
RC		 3521 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3522 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 3523 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3524 copied = 0;
81f6c7f8 3525 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
f453ba04
DA		 3526 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3527
3528 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3529 ret = -EFAULT;
3530 goto done;
3531 }
3532
3533 if (copy_to_user(&enum_ptr[copied].name,
3534 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3535 ret = -EFAULT;
3536 goto done;
3537 }
3538 copied++;
3539 }
3540 }
3541 out_resp->count_enum_blobs = enum_count;
3542 }
3543
5ea22f24 3544 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
f453ba04
DA		 3545 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3546 copied = 0;
81f6c7f8
VS		 3547 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3548 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 3549
3550 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3551 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3552 ret = -EFAULT;
3553 goto done;
3554 }
3555
3556 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3557 ret = -EFAULT;
3558 goto done;
3559 }
3560
3561 copied++;
3562 }
3563 }
3564 out_resp->count_enum_blobs = blob_count;
3565 }
3566done:
84849903 3567 drm_modeset_unlock_all(dev);
f453ba04
DA		 3568 return ret;
3569}
3570
3571static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3572 void *data)
3573{
3574 struct drm_property_blob *blob;
6bfc56aa 3575 int ret;
f453ba04
DA		 3576
3577 if (!length || !data)
3578 return NULL;
3579
3580 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3581 if (!blob)
3582 return NULL;
3583
6bfc56aa
VS		 3584 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3585 if (ret) {
3586 kfree(blob);
3587 return NULL;
3588 }
3589
f453ba04
DA		 3590 blob->length = length;
3591
3592 memcpy(blob->data, data, length);
3593
f453ba04
DA		 3594 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3595 return blob;
3596}
3597
3598static void drm_property_destroy_blob(struct drm_device *dev,
3599 struct drm_property_blob *blob)
3600{
3601 drm_mode_object_put(dev, &blob->base);
3602 list_del(&blob->head);
3603 kfree(blob);
3604}
3605
c8e32cc1
DV		 3606/**
3607 * drm_mode_getblob_ioctl - get the contents of a blob property value
3608 * @dev: DRM device
3609 * @data: ioctl data
3610 * @file_priv: DRM file info
3611 *
3612 * This function retrieves the contents of a blob property. The value stored in
3613 * an object's blob property is just a normal modeset object id.
3614 *
3615 * Called by the user via ioctl.
3616 *
3617 * Returns:
3618 * Zero on success, errno on failure.
3619 */
f453ba04
DA		 3620int drm_mode_getblob_ioctl(struct drm_device *dev,
3621 void *data, struct drm_file *file_priv)
3622{
f453ba04
DA		 3623 struct drm_mode_get_blob *out_resp = data;
3624 struct drm_property_blob *blob;
3625 int ret = 0;
81f6c7f8 3626 void __user *blob_ptr;
f453ba04 3627
fb3b06c8
DA		 3628 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3629 return -EINVAL;
3630
84849903 3631 drm_modeset_lock_all(dev);
a2b34e22
RC		 3632 blob = drm_property_blob_find(dev, out_resp->blob_id);
3633 if (!blob) {
f27657f2 3634 ret = -ENOENT;
f453ba04
DA		 3635 goto done;
3636 }
f453ba04
DA		 3637
3638 if (out_resp->length == blob->length) {
81f6c7f8 3639 blob_ptr = (void __user *)(unsigned long)out_resp->data;
f453ba04
DA		 3640 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3641 ret = -EFAULT;
3642 goto done;
3643 }
3644 }
3645 out_resp->length = blob->length;
3646
3647done:
84849903 3648 drm_modeset_unlock_all(dev);
f453ba04
DA		 3649 return ret;
3650}
3651
c8e32cc1
DV		 3652/**
3653 * drm_mode_connector_update_edid_property - update the edid property of a connector
3654 * @connector: drm connector
3655 * @edid: new value of the edid property
3656 *
3657 * This function creates a new blob modeset object and assigns its id to the
3658 * connector's edid property.
3659 *
3660 * Returns:
3661 * Zero on success, errno on failure.
3662 */
f453ba04
DA		 3663int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3664 struct edid *edid)
3665{
3666 struct drm_device *dev = connector->dev;
4a1b0714 3667 int ret, size;
f453ba04
DA		 3668
3669 if (connector->edid_blob_ptr)
3670 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3671
3672 /* Delete edid, when there is none. */
3673 if (!edid) {
3674 connector->edid_blob_ptr = NULL;
58495563 3675 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
f453ba04
DA		 3676 return ret;
3677 }
3678
7466f4cc
AJ		 3679 size = EDID_LENGTH * (1 + edid->extensions);
3680 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3681 size, edid);
e655d122
SK		 3682 if (!connector->edid_blob_ptr)
3683 return -EINVAL;
f453ba04 3684
58495563 3685 ret = drm_object_property_set_value(&connector->base,
f453ba04
DA		 3686 dev->mode_config.edid_property,
3687 connector->edid_blob_ptr->base.id);
3688
3689 return ret;
3690}
3691EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3692
26a34815 3693static bool drm_property_change_is_valid(struct drm_property *property,
592c20ee 3694 uint64_t value)
26a34815
PZ		 3695{
3696 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3697 return false;
5ea22f24
RC		 3698
3699 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 3700 if (value < property->values[0] || value > property->values[1])
3701 return false;
3702 return true;
ebc44cf3
RC		 3703 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
3704 int64_t svalue = U642I64(value);
3705 if (svalue < U642I64(property->values[0]) ||
3706 svalue > U642I64(property->values[1]))
3707 return false;
3708 return true;
5ea22f24 3709 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
49e27545 3710 int i;
592c20ee 3711 uint64_t valid_mask = 0;
49e27545
RC		 3712 for (i = 0; i < property->num_values; i++)
3713 valid_mask |= (1ULL << property->values[i]);
3714 return !(value & ~valid_mask);
5ea22f24 3715 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
c4a56750
VS		 3716 /* Only the driver knows */
3717 return true;
98f75de4
RC		 3718 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
3719 struct drm_mode_object *obj;
3720 /* a zero value for an object property translates to null: */
3721 if (value == 0)
3722 return true;
3723 /*
3724 * NOTE: use _object_find() directly to bypass restriction on
3725 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
3726 * object this could race against object finalization, so it
3727 * simply tells us that the object *was* valid. Which is good
3728 * enough.
3729 */
3730 obj = _object_find(property->dev, value, property->values[0]);
3731 return obj != NULL;
26a34815
PZ		 3732 } else {
3733 int i;
3734 for (i = 0; i < property->num_values; i++)
3735 if (property->values[i] == value)
3736 return true;
3737 return false;
3738 }
3739}
3740
c8e32cc1
DV		 3741/**
3742 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
3743 * @dev: DRM device
3744 * @data: ioctl data
3745 * @file_priv: DRM file info
3746 *
3747 * This function sets the current value for a connectors's property. It also
3748 * calls into a driver's ->set_property callback to update the hardware state
3749 *
3750 * Called by the user via ioctl.
3751 *
3752 * Returns:
3753 * Zero on success, errno on failure.
3754 */
f453ba04
DA		 3755int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3756 void *data, struct drm_file *file_priv)
3757{
0057d8dd
PZ		 3758 struct drm_mode_connector_set_property *conn_set_prop = data;
3759 struct drm_mode_obj_set_property obj_set_prop = {
3760 .value = conn_set_prop->value,
3761 .prop_id = conn_set_prop->prop_id,
3762 .obj_id = conn_set_prop->connector_id,
3763 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3764 };
fb3b06c8 3765
0057d8dd
PZ		 3766 /* It does all the locking and checking we need */
3767 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 3768}
3769
c543188a
PZ		 3770static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3771 struct drm_property *property,
3772 uint64_t value)
3773{
3774 int ret = -EINVAL;
3775 struct drm_connector *connector = obj_to_connector(obj);
3776
3777 /* Do DPMS ourselves */
3778 if (property == connector->dev->mode_config.dpms_property) {
3779 if (connector->funcs->dpms)
3780 (*connector->funcs->dpms)(connector, (int)value);
3781 ret = 0;
3782 } else if (connector->funcs->set_property)
3783 ret = connector->funcs->set_property(connector, property, value);
3784
3785 /* store the property value if successful */
3786 if (!ret)
58495563 3787 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 3788 return ret;
3789}
3790
bffd9de0
PZ		 3791static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3792 struct drm_property *property,
3793 uint64_t value)
3794{
3795 int ret = -EINVAL;
3796 struct drm_crtc *crtc = obj_to_crtc(obj);
3797
3798 if (crtc->funcs->set_property)
3799 ret = crtc->funcs->set_property(crtc, property, value);
3800 if (!ret)
3801 drm_object_property_set_value(obj, property, value);
3802
3803 return ret;
3804}
3805
4d93914a
RC		 3806static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3807 struct drm_property *property,
3808 uint64_t value)
3809{
3810 int ret = -EINVAL;
3811 struct drm_plane *plane = obj_to_plane(obj);
3812
3813 if (plane->funcs->set_property)
3814 ret = plane->funcs->set_property(plane, property, value);
3815 if (!ret)
3816 drm_object_property_set_value(obj, property, value);
3817
3818 return ret;
3819}
3820
c8e32cc1
DV		 3821/**
3822 * drm_mode_getproperty_ioctl - get the current value of a object's property
3823 * @dev: DRM device
3824 * @data: ioctl data
3825 * @file_priv: DRM file info
3826 *
3827 * This function retrieves the current value for an object's property. Compared
3828 * to the connector specific ioctl this one is extended to also work on crtc and
3829 * plane objects.
3830 *
3831 * Called by the user via ioctl.
3832 *
3833 * Returns:
3834 * Zero on success, errno on failure.
3835 */
c543188a
PZ		 3836int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3837 struct drm_file *file_priv)
3838{
3839 struct drm_mode_obj_get_properties *arg = data;
3840 struct drm_mode_object *obj;
3841 int ret = 0;
3842 int i;
3843 int copied = 0;
3844 int props_count = 0;
3845 uint32_t __user *props_ptr;
3846 uint64_t __user *prop_values_ptr;
3847
3848 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3849 return -EINVAL;
3850
84849903 3851 drm_modeset_lock_all(dev);
c543188a
PZ		 3852
3853 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3854 if (!obj) {
f27657f2 3855 ret = -ENOENT;
c543188a
PZ		 3856 goto out;
3857 }
3858 if (!obj->properties) {
3859 ret = -EINVAL;
3860 goto out;
3861 }
3862
7f88a9be 3863 props_count = obj->properties->count;
c543188a
PZ		 3864
3865 /* This ioctl is called twice, once to determine how much space is
3866 * needed, and the 2nd time to fill it. */
3867 if ((arg->count_props >= props_count) && props_count) {
3868 copied = 0;
3869 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3870 prop_values_ptr = (uint64_t __user *)(unsigned long)
3871 (arg->prop_values_ptr);
3872 for (i = 0; i < props_count; i++) {
3873 if (put_user(obj->properties->ids[i],
3874 props_ptr + copied)) {
3875 ret = -EFAULT;
3876 goto out;
3877 }
3878 if (put_user(obj->properties->values[i],
3879 prop_values_ptr + copied)) {
3880 ret = -EFAULT;
3881 goto out;
3882 }
3883 copied++;
3884 }
3885 }
3886 arg->count_props = props_count;
3887out:
84849903 3888 drm_modeset_unlock_all(dev);
c543188a
PZ		 3889 return ret;
3890}
3891
c8e32cc1
DV		 3892/**
3893 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
3894 * @dev: DRM device
3895 * @data: ioctl data
3896 * @file_priv: DRM file info
3897 *
3898 * This function sets the current value for an object's property. It also calls
3899 * into a driver's ->set_property callback to update the hardware state.
3900 * Compared to the connector specific ioctl this one is extended to also work on
3901 * crtc and plane objects.
3902 *
3903 * Called by the user via ioctl.
3904 *
3905 * Returns:
3906 * Zero on success, errno on failure.
3907 */
c543188a
PZ		 3908int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3909 struct drm_file *file_priv)
3910{
3911 struct drm_mode_obj_set_property *arg = data;
3912 struct drm_mode_object *arg_obj;
3913 struct drm_mode_object *prop_obj;
3914 struct drm_property *property;
3915 int ret = -EINVAL;
3916 int i;
3917
3918 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3919 return -EINVAL;
3920
84849903 3921 drm_modeset_lock_all(dev);
c543188a
PZ		 3922
3923 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 3924 if (!arg_obj) {
3925 ret = -ENOENT;
c543188a 3926 goto out;
f27657f2 3927 }
c543188a
PZ		 3928 if (!arg_obj->properties)
3929 goto out;
3930
7f88a9be 3931 for (i = 0; i < arg_obj->properties->count; i++)
c543188a
PZ		 3932 if (arg_obj->properties->ids[i] == arg->prop_id)
3933 break;
3934
7f88a9be 3935 if (i == arg_obj->properties->count)
c543188a
PZ		 3936 goto out;
3937
3938 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3939 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 3940 if (!prop_obj) {
3941 ret = -ENOENT;
c543188a 3942 goto out;
f27657f2 3943 }
c543188a
PZ		 3944 property = obj_to_property(prop_obj);
3945
3946 if (!drm_property_change_is_valid(property, arg->value))
3947 goto out;
3948
3949 switch (arg_obj->type) {
3950 case DRM_MODE_OBJECT_CONNECTOR:
3951 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3952 arg->value);
3953 break;
bffd9de0
PZ		 3954 case DRM_MODE_OBJECT_CRTC:
3955 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3956 break;
4d93914a
RC		 3957 case DRM_MODE_OBJECT_PLANE:
3958 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
3959 break;
c543188a
PZ		 3960 }
3961
3962out:
84849903 3963 drm_modeset_unlock_all(dev);
c543188a
PZ		 3964 return ret;
3965}
3966
c8e32cc1
DV		 3967/**
3968 * drm_mode_connector_attach_encoder - attach a connector to an encoder
3969 * @connector: connector to attach
3970 * @encoder: encoder to attach @connector to
3971 *
3972 * This function links up a connector to an encoder. Note that the routing
3973 * restrictions between encoders and crtcs are exposed to userspace through the
3974 * possible_clones and possible_crtcs bitmasks.
3975 *
3976 * Returns:
3977 * Zero on success, errno on failure.
3978 */
f453ba04
DA		 3979int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3980 struct drm_encoder *encoder)
3981{
3982 int i;
3983
3984 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3985 if (connector->encoder_ids[i] == 0) {
3986 connector->encoder_ids[i] = encoder->base.id;
3987 return 0;
3988 }
3989 }
3990 return -ENOMEM;
3991}
3992EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3993
c8e32cc1
DV		 3994/**
3995 * drm_mode_crtc_set_gamma_size - set the gamma table size
3996 * @crtc: CRTC to set the gamma table size for
3997 * @gamma_size: size of the gamma table
3998 *
3999 * Drivers which support gamma tables should set this to the supported gamma
4000 * table size when initializing the CRTC. Currently the drm core only supports a
4001 * fixed gamma table size.
4002 *
4003 * Returns:
4004 * Zero on success, errno on failure.
4005 */
4cae5b84 4006int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 4007 int gamma_size)
f453ba04
DA		 4008{
4009 crtc->gamma_size = gamma_size;
4010
4011 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4012 if (!crtc->gamma_store) {
4013 crtc->gamma_size = 0;
4cae5b84 4014 return -ENOMEM;
f453ba04
DA		 4015 }
4016
4cae5b84 4017 return 0;
f453ba04
DA		 4018}
4019EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4020
c8e32cc1
DV		 4021/**
4022 * drm_mode_gamma_set_ioctl - set the gamma table
4023 * @dev: DRM device
4024 * @data: ioctl data
4025 * @file_priv: DRM file info
4026 *
4027 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4028 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4029 *
4030 * Called by the user via ioctl.
4031 *
4032 * Returns:
4033 * Zero on success, errno on failure.
4034 */
f453ba04
DA		 4035int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4036 void *data, struct drm_file *file_priv)
4037{
4038 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4039 struct drm_crtc *crtc;
4040 void *r_base, *g_base, *b_base;
4041 int size;
4042 int ret = 0;
4043
fb3b06c8
DA		 4044 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4045 return -EINVAL;
4046
84849903 4047 drm_modeset_lock_all(dev);
a2b34e22
RC		 4048 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4049 if (!crtc) {
f27657f2 4050 ret = -ENOENT;
f453ba04
DA		 4051 goto out;
4052 }
f453ba04 4053
ebe0f244
LP		 4054 if (crtc->funcs->gamma_set == NULL) {
4055 ret = -ENOSYS;
4056 goto out;
4057 }
4058
f453ba04
DA		 4059 /* memcpy into gamma store */
4060 if (crtc_lut->gamma_size != crtc->gamma_size) {
4061 ret = -EINVAL;
4062 goto out;
4063 }
4064
4065 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4066 r_base = crtc->gamma_store;
4067 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4068 ret = -EFAULT;
4069 goto out;
4070 }
4071
4072 g_base = r_base + size;
4073 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4074 ret = -EFAULT;
4075 goto out;
4076 }
4077
4078 b_base = g_base + size;
4079 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4080 ret = -EFAULT;
4081 goto out;
4082 }
4083
7203425a 4084 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 4085
4086out:
84849903 4087 drm_modeset_unlock_all(dev);
f453ba04
DA		 4088 return ret;
4089
4090}
4091
c8e32cc1
DV		 4092/**
4093 * drm_mode_gamma_get_ioctl - get the gamma table
4094 * @dev: DRM device
4095 * @data: ioctl data
4096 * @file_priv: DRM file info
4097 *
4098 * Copy the current gamma table into the storage provided. This also provides
4099 * the gamma table size the driver expects, which can be used to size the
4100 * allocated storage.
4101 *
4102 * Called by the user via ioctl.
4103 *
4104 * Returns:
4105 * Zero on success, errno on failure.
4106 */
f453ba04
DA		 4107int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4108 void *data, struct drm_file *file_priv)
4109{
4110 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4111 struct drm_crtc *crtc;
4112 void *r_base, *g_base, *b_base;
4113 int size;
4114 int ret = 0;
4115
fb3b06c8
DA		 4116 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4117 return -EINVAL;
4118
84849903 4119 drm_modeset_lock_all(dev);
a2b34e22
RC		 4120 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4121 if (!crtc) {
f27657f2 4122 ret = -ENOENT;
f453ba04
DA		 4123 goto out;
4124 }
f453ba04
DA		 4125
4126 /* memcpy into gamma store */
4127 if (crtc_lut->gamma_size != crtc->gamma_size) {
4128 ret = -EINVAL;
4129 goto out;
4130 }
4131
4132 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4133 r_base = crtc->gamma_store;
4134 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4135 ret = -EFAULT;
4136 goto out;
4137 }
4138
4139 g_base = r_base + size;
4140 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4141 ret = -EFAULT;
4142 goto out;
4143 }
4144
4145 b_base = g_base + size;
4146 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4147 ret = -EFAULT;
4148 goto out;
4149 }
4150out:
84849903 4151 drm_modeset_unlock_all(dev);
f453ba04
DA		 4152 return ret;
4153}
d91d8a3f 4154
c8e32cc1
DV		 4155/**
4156 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4157 * @dev: DRM device
4158 * @data: ioctl data
4159 * @file_priv: DRM file info
4160 *
4161 * This schedules an asynchronous update on a given CRTC, called page flip.
4162 * Optionally a drm event is generated to signal the completion of the event.
4163 * Generic drivers cannot assume that a pageflip with changed framebuffer
4164 * properties (including driver specific metadata like tiling layout) will work,
4165 * but some drivers support e.g. pixel format changes through the pageflip
4166 * ioctl.
4167 *
4168 * Called by the user via ioctl.
4169 *
4170 * Returns:
4171 * Zero on success, errno on failure.
4172 */
d91d8a3f
KH		 4173int drm_mode_page_flip_ioctl(struct drm_device *dev,
4174 void *data, struct drm_file *file_priv)
4175{
4176 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 4177 struct drm_crtc *crtc;
b0d12325 4178 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
d91d8a3f
KH		 4179 struct drm_pending_vblank_event *e = NULL;
4180 unsigned long flags;
4181 int ret = -EINVAL;
4182
4183 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4184 page_flip->reserved != 0)
4185 return -EINVAL;
4186
62f2104f
KP		 4187 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4188 return -EINVAL;
4189
a2b34e22
RC		 4190 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4191 if (!crtc)
f27657f2 4192 return -ENOENT;
d91d8a3f 4193
b4d5e7d1 4194 mutex_lock(&crtc->mutex);
f4510a27 4195 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 4196 /* The framebuffer is currently unbound, presumably
4197 * due to a hotplug event, that userspace has not
4198 * yet discovered.
4199 */
4200 ret = -EBUSY;
4201 goto out;
4202 }
4203
d91d8a3f
KH		 4204 if (crtc->funcs->page_flip == NULL)
4205 goto out;
4206
786b99ed 4207 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 4208 if (!fb) {
4209 ret = -ENOENT;
d91d8a3f 4210 goto out;
37c4e705 4211 }
d91d8a3f 4212
c11e9283
DL		 4213 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4214 if (ret)
5f61bb42 4215 goto out;
5f61bb42 4216
f4510a27 4217 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 4218 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4219 ret = -EINVAL;
4220 goto out;
4221 }
4222
d91d8a3f
KH		 4223 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4224 ret = -ENOMEM;
4225 spin_lock_irqsave(&dev->event_lock, flags);
4226 if (file_priv->event_space < sizeof e->event) {
4227 spin_unlock_irqrestore(&dev->event_lock, flags);
4228 goto out;
4229 }
4230 file_priv->event_space -= sizeof e->event;
4231 spin_unlock_irqrestore(&dev->event_lock, flags);
4232
4233 e = kzalloc(sizeof *e, GFP_KERNEL);
4234 if (e == NULL) {
4235 spin_lock_irqsave(&dev->event_lock, flags);
4236 file_priv->event_space += sizeof e->event;
4237 spin_unlock_irqrestore(&dev->event_lock, flags);
4238 goto out;
4239 }
4240
7bd4d7be 4241 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
d91d8a3f
KH		 4242 e->event.base.length = sizeof e->event;
4243 e->event.user_data = page_flip->user_data;
4244 e->base.event = &e->event.base;
4245 e->base.file_priv = file_priv;
4246 e->base.destroy =
4247 (void (*) (struct drm_pending_event *)) kfree;
4248 }
4249
f4510a27 4250 old_fb = crtc->primary->fb;
ed8d1975 4251 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 4252 if (ret) {
aef6a7ee
JS		 4253 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4254 spin_lock_irqsave(&dev->event_lock, flags);
4255 file_priv->event_space += sizeof e->event;
4256 spin_unlock_irqrestore(&dev->event_lock, flags);
4257 kfree(e);
4258 }
b0d12325
DV		 4259 /* Keep the old fb, don't unref it. */
4260 old_fb = NULL;
4261 } else {
8cf1e981
TR		 4262 /*
4263 * Warn if the driver hasn't properly updated the crtc->fb
4264 * field to reflect that the new framebuffer is now used.
4265 * Failing to do so will screw with the reference counting
4266 * on framebuffers.
4267 */
f4510a27 4268 WARN_ON(crtc->primary->fb != fb);
b0d12325
DV		 4269 /* Unref only the old framebuffer. */
4270 fb = NULL;
d91d8a3f
KH		 4271 }
4272
4273out:
b0d12325
DV		 4274 if (fb)
4275 drm_framebuffer_unreference(fb);
4276 if (old_fb)
4277 drm_framebuffer_unreference(old_fb);
b4d5e7d1
DV		 4278 mutex_unlock(&crtc->mutex);
4279
d91d8a3f
KH		 4280 return ret;
4281}
eb033556 4282
c8e32cc1
DV		 4283/**
4284 * drm_mode_config_reset - call ->reset callbacks
4285 * @dev: drm device
4286 *
4287 * This functions calls all the crtc's, encoder's and connector's ->reset
4288 * callback. Drivers can use this in e.g. their driver load or resume code to
4289 * reset hardware and software state.
4290 */
eb033556
CW		 4291void drm_mode_config_reset(struct drm_device *dev)
4292{
4293 struct drm_crtc *crtc;
4294 struct drm_encoder *encoder;
4295 struct drm_connector *connector;
4296
4297 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4298 if (crtc->funcs->reset)
4299 crtc->funcs->reset(crtc);
4300
4301 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4302 if (encoder->funcs->reset)
4303 encoder->funcs->reset(encoder);
4304
5e2cb2f6
DV		 4305 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4306 connector->status = connector_status_unknown;
4307
eb033556
CW		 4308 if (connector->funcs->reset)
4309 connector->funcs->reset(connector);
5e2cb2f6 4310 }
eb033556
CW		 4311}
4312EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 4313
c8e32cc1
DV		 4314/**
4315 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4316 * @dev: DRM device
4317 * @data: ioctl data
4318 * @file_priv: DRM file info
4319 *
4320 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4321 * TTM or something else entirely) and returns the resulting buffer handle. This
4322 * handle can then be wrapped up into a framebuffer modeset object.
4323 *
4324 * Note that userspace is not allowed to use such objects for render
4325 * acceleration - drivers must create their own private ioctls for such a use
4326 * case.
4327 *
4328 * Called by the user via ioctl.
4329 *
4330 * Returns:
4331 * Zero on success, errno on failure.
4332 */
ff72145b
DA		 4333int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4334 void *data, struct drm_file *file_priv)
4335{
4336 struct drm_mode_create_dumb *args = data;
b28cd41f 4337 u32 cpp, stride, size;
ff72145b
DA		 4338
4339 if (!dev->driver->dumb_create)
4340 return -ENOSYS;
b28cd41f
DH		 4341 if (!args->width || !args->height || !args->bpp)
4342 return -EINVAL;
4343
4344 /* overflow checks for 32bit size calculations */
4345 cpp = DIV_ROUND_UP(args->bpp, 8);
4346 if (cpp > 0xffffffffU / args->width)
4347 return -EINVAL;
4348 stride = cpp * args->width;
4349 if (args->height > 0xffffffffU / stride)
4350 return -EINVAL;
4351
4352 /* test for wrap-around */
4353 size = args->height * stride;
4354 if (PAGE_ALIGN(size) == 0)
4355 return -EINVAL;
4356
ff72145b
DA		 4357 return dev->driver->dumb_create(file_priv, dev, args);
4358}
4359
c8e32cc1
DV		 4360/**
4361 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4362 * @dev: DRM device
4363 * @data: ioctl data
4364 * @file_priv: DRM file info
4365 *
4366 * Allocate an offset in the drm device node's address space to be able to
4367 * memory map a dumb buffer.
4368 *
4369 * Called by the user via ioctl.
4370 *
4371 * Returns:
4372 * Zero on success, errno on failure.
4373 */
ff72145b
DA		 4374int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4375 void *data, struct drm_file *file_priv)
4376{
4377 struct drm_mode_map_dumb *args = data;
4378
4379 /* call driver ioctl to get mmap offset */
4380 if (!dev->driver->dumb_map_offset)
4381 return -ENOSYS;
4382
4383 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4384}
4385
c8e32cc1
DV		 4386/**
4387 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4388 * @dev: DRM device
4389 * @data: ioctl data
4390 * @file_priv: DRM file info
4391 *
4392 * This destroys the userspace handle for the given dumb backing storage buffer.
4393 * Since buffer objects must be reference counted in the kernel a buffer object
4394 * won't be immediately freed if a framebuffer modeset object still uses it.
4395 *
4396 * Called by the user via ioctl.
4397 *
4398 * Returns:
4399 * Zero on success, errno on failure.
4400 */
ff72145b
DA		 4401int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4402 void *data, struct drm_file *file_priv)
4403{
4404 struct drm_mode_destroy_dumb *args = data;
4405
4406 if (!dev->driver->dumb_destroy)
4407 return -ENOSYS;
4408
4409 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4410}
248dbc23 4411
c8e32cc1
DV		 4412/**
4413 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4414 * @format: pixel format (DRM_FORMAT_*)
4415 * @depth: storage for the depth value
4416 * @bpp: storage for the bpp value
4417 *
4418 * This only supports RGB formats here for compat with code that doesn't use
4419 * pixel formats directly yet.
248dbc23
DA		 4420 */
4421void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4422 int *bpp)
4423{
4424 switch (format) {
c51a6bc5 4425 case DRM_FORMAT_C8:
04b3924d
VS		 4426 case DRM_FORMAT_RGB332:
4427 case DRM_FORMAT_BGR233:
248dbc23
DA		 4428 *depth = 8;
4429 *bpp = 8;
4430 break;
04b3924d
VS		 4431 case DRM_FORMAT_XRGB1555:
4432 case DRM_FORMAT_XBGR1555:
4433 case DRM_FORMAT_RGBX5551:
4434 case DRM_FORMAT_BGRX5551:
4435 case DRM_FORMAT_ARGB1555:
4436 case DRM_FORMAT_ABGR1555:
4437 case DRM_FORMAT_RGBA5551:
4438 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 4439 *depth = 15;
4440 *bpp = 16;
4441 break;
04b3924d
VS		 4442 case DRM_FORMAT_RGB565:
4443 case DRM_FORMAT_BGR565:
248dbc23
DA		 4444 *depth = 16;
4445 *bpp = 16;
4446 break;
04b3924d
VS		 4447 case DRM_FORMAT_RGB888:
4448 case DRM_FORMAT_BGR888:
4449 *depth = 24;
4450 *bpp = 24;
4451 break;
4452 case DRM_FORMAT_XRGB8888:
4453 case DRM_FORMAT_XBGR8888:
4454 case DRM_FORMAT_RGBX8888:
4455 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 4456 *depth = 24;
4457 *bpp = 32;
4458 break;
04b3924d
VS		 4459 case DRM_FORMAT_XRGB2101010:
4460 case DRM_FORMAT_XBGR2101010:
4461 case DRM_FORMAT_RGBX1010102:
4462 case DRM_FORMAT_BGRX1010102:
4463 case DRM_FORMAT_ARGB2101010:
4464 case DRM_FORMAT_ABGR2101010:
4465 case DRM_FORMAT_RGBA1010102:
4466 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 4467 *depth = 30;
4468 *bpp = 32;
4469 break;
04b3924d
VS		 4470 case DRM_FORMAT_ARGB8888:
4471 case DRM_FORMAT_ABGR8888:
4472 case DRM_FORMAT_RGBA8888:
4473 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 4474 *depth = 32;
4475 *bpp = 32;
4476 break;
4477 default:
23c453a4
VS		 4478 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4479 drm_get_format_name(format));
248dbc23
DA		 4480 *depth = 0;
4481 *bpp = 0;
4482 break;
4483 }
4484}
4485EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 4486
4487/**
4488 * drm_format_num_planes - get the number of planes for format
4489 * @format: pixel format (DRM_FORMAT_*)
4490 *
c8e32cc1 4491 * Returns:
141670e9
VS		 4492 * The number of planes used by the specified pixel format.
4493 */
4494int drm_format_num_planes(uint32_t format)
4495{
4496 switch (format) {
4497 case DRM_FORMAT_YUV410:
4498 case DRM_FORMAT_YVU410:
4499 case DRM_FORMAT_YUV411:
4500 case DRM_FORMAT_YVU411:
4501 case DRM_FORMAT_YUV420:
4502 case DRM_FORMAT_YVU420:
4503 case DRM_FORMAT_YUV422:
4504 case DRM_FORMAT_YVU422:
4505 case DRM_FORMAT_YUV444:
4506 case DRM_FORMAT_YVU444:
4507 return 3;
4508 case DRM_FORMAT_NV12:
4509 case DRM_FORMAT_NV21:
4510 case DRM_FORMAT_NV16:
4511 case DRM_FORMAT_NV61:
ba623f6a
LP		 4512 case DRM_FORMAT_NV24:
4513 case DRM_FORMAT_NV42:
141670e9
VS		 4514 return 2;
4515 default:
4516 return 1;
4517 }
4518}
4519EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 4520
4521/**
4522 * drm_format_plane_cpp - determine the bytes per pixel value
4523 * @format: pixel format (DRM_FORMAT_*)
4524 * @plane: plane index
4525 *
c8e32cc1 4526 * Returns:
5a86bd55
VS		 4527 * The bytes per pixel value for the specified plane.
4528 */
4529int drm_format_plane_cpp(uint32_t format, int plane)
4530{
4531 unsigned int depth;
4532 int bpp;
4533
4534 if (plane >= drm_format_num_planes(format))
4535 return 0;
4536
4537 switch (format) {
4538 case DRM_FORMAT_YUYV:
4539 case DRM_FORMAT_YVYU:
4540 case DRM_FORMAT_UYVY:
4541 case DRM_FORMAT_VYUY:
4542 return 2;
4543 case DRM_FORMAT_NV12:
4544 case DRM_FORMAT_NV21:
4545 case DRM_FORMAT_NV16:
4546 case DRM_FORMAT_NV61:
ba623f6a
LP		 4547 case DRM_FORMAT_NV24:
4548 case DRM_FORMAT_NV42:
5a86bd55
VS		 4549 return plane ? 2 : 1;
4550 case DRM_FORMAT_YUV410:
4551 case DRM_FORMAT_YVU410:
4552 case DRM_FORMAT_YUV411:
4553 case DRM_FORMAT_YVU411:
4554 case DRM_FORMAT_YUV420:
4555 case DRM_FORMAT_YVU420:
4556 case DRM_FORMAT_YUV422:
4557 case DRM_FORMAT_YVU422:
4558 case DRM_FORMAT_YUV444:
4559 case DRM_FORMAT_YVU444:
4560 return 1;
4561 default:
4562 drm_fb_get_bpp_depth(format, &depth, &bpp);
4563 return bpp >> 3;
4564 }
4565}
4566EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 4567
4568/**
4569 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4570 * @format: pixel format (DRM_FORMAT_*)
4571 *
c8e32cc1 4572 * Returns:
01b68b04
VS		 4573 * The horizontal chroma subsampling factor for the
4574 * specified pixel format.
4575 */
4576int drm_format_horz_chroma_subsampling(uint32_t format)
4577{
4578 switch (format) {
4579 case DRM_FORMAT_YUV411:
4580 case DRM_FORMAT_YVU411:
4581 case DRM_FORMAT_YUV410:
4582 case DRM_FORMAT_YVU410:
4583 return 4;
4584 case DRM_FORMAT_YUYV:
4585 case DRM_FORMAT_YVYU:
4586 case DRM_FORMAT_UYVY:
4587 case DRM_FORMAT_VYUY:
4588 case DRM_FORMAT_NV12:
4589 case DRM_FORMAT_NV21:
4590 case DRM_FORMAT_NV16:
4591 case DRM_FORMAT_NV61:
4592 case DRM_FORMAT_YUV422:
4593 case DRM_FORMAT_YVU422:
4594 case DRM_FORMAT_YUV420:
4595 case DRM_FORMAT_YVU420:
4596 return 2;
4597 default:
4598 return 1;
4599 }
4600}
4601EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4602
4603/**
4604 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4605 * @format: pixel format (DRM_FORMAT_*)
4606 *
c8e32cc1 4607 * Returns:
01b68b04
VS		 4608 * The vertical chroma subsampling factor for the
4609 * specified pixel format.
4610 */
4611int drm_format_vert_chroma_subsampling(uint32_t format)
4612{
4613 switch (format) {
4614 case DRM_FORMAT_YUV410:
4615 case DRM_FORMAT_YVU410:
4616 return 4;
4617 case DRM_FORMAT_YUV420:
4618 case DRM_FORMAT_YVU420:
4619 case DRM_FORMAT_NV12:
4620 case DRM_FORMAT_NV21:
4621 return 2;
4622 default:
4623 return 1;
4624 }
4625}
4626EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3
LP		 4627
4628/**
4629 * drm_mode_config_init - initialize DRM mode_configuration structure
4630 * @dev: DRM device
4631 *
4632 * Initialize @dev's mode_config structure, used for tracking the graphics
4633 * configuration of @dev.
4634 *
4635 * Since this initializes the modeset locks, no locking is possible. Which is no
4636 * problem, since this should happen single threaded at init time. It is the
4637 * driver's problem to ensure this guarantee.
4638 *
4639 */
4640void drm_mode_config_init(struct drm_device *dev)
4641{
4642 mutex_init(&dev->mode_config.mutex);
4643 mutex_init(&dev->mode_config.idr_mutex);
4644 mutex_init(&dev->mode_config.fb_lock);
4645 INIT_LIST_HEAD(&dev->mode_config.fb_list);
4646 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
4647 INIT_LIST_HEAD(&dev->mode_config.connector_list);
3b336ec4 4648 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
87d24fc3
LP		 4649 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
4650 INIT_LIST_HEAD(&dev->mode_config.property_list);
4651 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
4652 INIT_LIST_HEAD(&dev->mode_config.plane_list);
4653 idr_init(&dev->mode_config.crtc_idr);
4654
4655 drm_modeset_lock_all(dev);
4656 drm_mode_create_standard_connector_properties(dev);
9922ab5a 4657 drm_mode_create_standard_plane_properties(dev);
87d24fc3
LP		 4658 drm_modeset_unlock_all(dev);
4659
4660 /* Just to be sure */
4661 dev->mode_config.num_fb = 0;
4662 dev->mode_config.num_connector = 0;
4663 dev->mode_config.num_crtc = 0;
4664 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 4665 dev->mode_config.num_overlay_plane = 0;
4666 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 4667}
4668EXPORT_SYMBOL(drm_mode_config_init);
4669
4670/**
4671 * drm_mode_config_cleanup - free up DRM mode_config info
4672 * @dev: DRM device
4673 *
4674 * Free up all the connectors and CRTCs associated with this DRM device, then
4675 * free up the framebuffers and associated buffer objects.
4676 *
4677 * Note that since this /should/ happen single-threaded at driver/device
4678 * teardown time, no locking is required. It's the driver's job to ensure that
4679 * this guarantee actually holds true.
4680 *
4681 * FIXME: cleanup any dangling user buffer objects too
4682 */
4683void drm_mode_config_cleanup(struct drm_device *dev)
4684{
4685 struct drm_connector *connector, *ot;
4686 struct drm_crtc *crtc, *ct;
4687 struct drm_encoder *encoder, *enct;
3b336ec4 4688 struct drm_bridge *bridge, *brt;
87d24fc3
LP		 4689 struct drm_framebuffer *fb, *fbt;
4690 struct drm_property *property, *pt;
4691 struct drm_property_blob *blob, *bt;
4692 struct drm_plane *plane, *plt;
4693
4694 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
4695 head) {
4696 encoder->funcs->destroy(encoder);
4697 }
4698
3b336ec4
SP		 4699 list_for_each_entry_safe(bridge, brt,
4700 &dev->mode_config.bridge_list, head) {
4701 bridge->funcs->destroy(bridge);
4702 }
4703
87d24fc3
LP		 4704 list_for_each_entry_safe(connector, ot,
4705 &dev->mode_config.connector_list, head) {
4706 connector->funcs->destroy(connector);
4707 }
4708
4709 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
4710 head) {
4711 drm_property_destroy(dev, property);
4712 }
4713
4714 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
4715 head) {
4716 drm_property_destroy_blob(dev, blob);
4717 }
4718
4719 /*
4720 * Single-threaded teardown context, so it's not required to grab the
4721 * fb_lock to protect against concurrent fb_list access. Contrary, it
4722 * would actually deadlock with the drm_framebuffer_cleanup function.
4723 *
4724 * Also, if there are any framebuffers left, that's a driver leak now,
4725 * so politely WARN about this.
4726 */
4727 WARN_ON(!list_empty(&dev->mode_config.fb_list));
4728 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
4729 drm_framebuffer_remove(fb);
4730 }
4731
4732 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
4733 head) {
4734 plane->funcs->destroy(plane);
4735 }
4736
4737 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
4738 crtc->funcs->destroy(crtc);
4739 }
4740
4741 idr_destroy(&dev->mode_config.crtc_idr);
4742}
4743EXPORT_SYMBOL(drm_mode_config_cleanup);
Linux kernel - Deliverables
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