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drm/nouveau/gr/gk104-gk20a: call pmu to disable any power-gating before ctor()
[linux-2.6-block.git] / drivers / gpu / drm / drm_crtc.c
CommitLineData
f453ba04
DA		 1/*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
6ba6d03e 32#include <linux/ctype.h>
f453ba04 33#include <linux/list.h>
5a0e3ad6 34#include <linux/slab.h>
2d1a8a48 35#include <linux/export.h>
760285e7
DH		 36#include <drm/drmP.h>
37#include <drm/drm_crtc.h>
38#include <drm/drm_edid.h>
39#include <drm/drm_fourcc.h>
51fd371b 40#include <drm/drm_modeset_lock.h>
88a48e29 41#include <drm/drm_atomic.h>
f453ba04 42
8bd441b2 43#include "drm_crtc_internal.h"
67d0ec4e 44#include "drm_internal.h"
8bd441b2 45
9a6f5130
CW		 46static struct drm_framebuffer *
47internal_framebuffer_create(struct drm_device *dev,
48 struct drm_mode_fb_cmd2 *r,
49 struct drm_file *file_priv);
c394c2b0 50
f453ba04
DA		 51/* Avoid boilerplate. I'm tired of typing. */
52#define DRM_ENUM_NAME_FN(fnname, list) \
d20d3174 53 const char *fnname(int val) \
f453ba04
DA		 54 { \
55 int i; \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
59 } \
60 return "(unknown)"; \
61 }
62
63/*
64 * Global properties
65 */
4dfd909f
TR		 66static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
67 { DRM_MODE_DPMS_ON, "On" },
f453ba04
DA		 68 { DRM_MODE_DPMS_STANDBY, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
70 { DRM_MODE_DPMS_OFF, "Off" }
71};
72
73DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
74
4dfd909f 75static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
9922ab5a
RC		 76 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
79};
80
f453ba04
DA		 81/*
82 * Optional properties
83 */
4dfd909f 84static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
53bd8389
JB		 85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 89};
90
ff587e45
VK		 91static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
95};
96
f453ba04
DA		 97/*
98 * Non-global properties, but "required" for certain connectors.
99 */
4dfd909f 100static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
f453ba04
DA		 101 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
104};
105
106DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
107
4dfd909f 108static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
f453ba04
DA		 109 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
112};
113
114DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
115 drm_dvi_i_subconnector_enum_list)
116
4dfd909f 117static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
f453ba04
DA		 118 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 123};
124
125DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
126
4dfd909f 127static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
f453ba04
DA		 128 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 132 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 133};
134
135DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
136 drm_tv_subconnector_enum_list)
137
d20d3174 138static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
884840aa
JB		 139 { DRM_MODE_DIRTY_OFF, "Off" },
140 { DRM_MODE_DIRTY_ON, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
142};
143
f453ba04
DA		 144struct drm_conn_prop_enum_list {
145 int type;
d20d3174 146 const char *name;
b21e3afe 147 struct ida ida;
f453ba04
DA		 148};
149
150/*
151 * Connector and encoder types.
152 */
4dfd909f
TR		 153static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
154 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
b21e3afe
IM		 155 { DRM_MODE_CONNECTOR_VGA, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV, "TV" },
168 { DRM_MODE_CONNECTOR_eDP, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
b8923273 170 { DRM_MODE_CONNECTOR_DSI, "DSI" },
f453ba04
DA		 171};
172
4dfd909f
TR		 173static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
174 { DRM_MODE_ENCODER_NONE, "None" },
f453ba04
DA		 175 { DRM_MODE_ENCODER_DAC, "DAC" },
176 { DRM_MODE_ENCODER_TMDS, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 179 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
b8923273 180 { DRM_MODE_ENCODER_DSI, "DSI" },
182407a6 181 { DRM_MODE_ENCODER_DPMST, "DP MST" },
f453ba04
DA		 182};
183
4dfd909f 184static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
ac1bb36c
JB		 185 { SubPixelUnknown, "Unknown" },
186 { SubPixelHorizontalRGB, "Horizontal RGB" },
187 { SubPixelHorizontalBGR, "Horizontal BGR" },
188 { SubPixelVerticalRGB, "Vertical RGB" },
189 { SubPixelVerticalBGR, "Vertical BGR" },
190 { SubPixelNone, "None" },
191};
192
b21e3afe
IM		 193void drm_connector_ida_init(void)
194{
195 int i;
196
197 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
198 ida_init(&drm_connector_enum_list[i].ida);
199}
200
201void drm_connector_ida_destroy(void)
202{
203 int i;
204
205 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
206 ida_destroy(&drm_connector_enum_list[i].ida);
207}
208
c8e32cc1
DV		 209/**
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
212 *
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
215 */
d20d3174 216const char *drm_get_connector_status_name(enum drm_connector_status status)
f453ba04
DA		 217{
218 if (status == connector_status_connected)
219 return "connected";
220 else if (status == connector_status_disconnected)
221 return "disconnected";
222 else
223 return "unknown";
224}
ed7951dc 225EXPORT_SYMBOL(drm_get_connector_status_name);
f453ba04 226
ac1bb36c
JB		 227/**
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
230 *
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
233 */
234const char *drm_get_subpixel_order_name(enum subpixel_order order)
235{
236 return drm_subpixel_enum_list[order].name;
237}
238EXPORT_SYMBOL(drm_get_subpixel_order_name);
239
6ba6d03e
VS		 240static char printable_char(int c)
241{
242 return isascii(c) && isprint(c) ? c : '?';
243}
244
c8e32cc1
DV		 245/**
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
248 *
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
251 *
252 * FIXME: This isn't really multithreading safe.
253 */
d20d3174 254const char *drm_get_format_name(uint32_t format)
6ba6d03e
VS		 255{
256 static char buf[32];
257
258 snprintf(buf, sizeof(buf),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format & 0xff),
261 printable_char((format >> 8) & 0xff),
262 printable_char((format >> 16) & 0xff),
263 printable_char((format >> 24) & 0x7f),
264 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
265 format);
266
267 return buf;
268}
269EXPORT_SYMBOL(drm_get_format_name);
270
2ee39452
DA		 271/*
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
274 */
275static int drm_mode_object_get_reg(struct drm_device *dev,
276 struct drm_mode_object *obj,
277 uint32_t obj_type,
278 bool register_obj)
279{
280 int ret;
281
282 mutex_lock(&dev->mode_config.idr_mutex);
283 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
284 if (ret >= 0) {
285 /*
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
288 */
289 obj->id = ret;
290 obj->type = obj_type;
291 }
292 mutex_unlock(&dev->mode_config.idr_mutex);
293
294 return ret < 0 ? ret : 0;
295}
296
f453ba04 297/**
065a50ed 298 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 299 * @dev: DRM device
065a50ed
DV		 300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
f453ba04 302 *
f453ba04 303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
c8e32cc1
DV		 304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
f453ba04 307 *
c8e32cc1 308 * Returns:
f453ba04
DA		 309 * New unique (relative to other objects in @dev) integer identifier for the
310 * object.
311 */
8bd441b2
DV		 312int drm_mode_object_get(struct drm_device *dev,
313 struct drm_mode_object *obj, uint32_t obj_type)
f453ba04 314{
2ee39452
DA		 315 return drm_mode_object_get_reg(dev, obj, obj_type, true);
316}
f453ba04 317
2ee39452
DA		 318static void drm_mode_object_register(struct drm_device *dev,
319 struct drm_mode_object *obj)
320{
ad2563c2 321 mutex_lock(&dev->mode_config.idr_mutex);
2ee39452 322 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
ad2563c2 323 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 324}
325
326/**
065a50ed 327 * drm_mode_object_put - free a modeset identifer
f453ba04 328 * @dev: DRM device
065a50ed 329 * @object: object to free
f453ba04 330 *
c8e32cc1
DV		 331 * Free @id from @dev's unique identifier pool. Note that despite the _get
332 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
333 * for reference counted modeset objects like framebuffers.
f453ba04 334 */
8bd441b2
DV		 335void drm_mode_object_put(struct drm_device *dev,
336 struct drm_mode_object *object)
f453ba04 337{
ad2563c2 338 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 339 idr_remove(&dev->mode_config.crtc_idr, object->id);
ad2563c2 340 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 341}
342
98f75de4
RC		 343static struct drm_mode_object *_object_find(struct drm_device *dev,
344 uint32_t id, uint32_t type)
345{
346 struct drm_mode_object *obj = NULL;
347
348 mutex_lock(&dev->mode_config.idr_mutex);
349 obj = idr_find(&dev->mode_config.crtc_idr, id);
168c02ec
DV		 350 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
351 obj = NULL;
352 if (obj && obj->id != id)
353 obj = NULL;
354 /* don't leak out unref'd fb's */
355 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
98f75de4
RC		 356 obj = NULL;
357 mutex_unlock(&dev->mode_config.idr_mutex);
358
359 return obj;
360}
361
786b99ed
DV		 362/**
363 * drm_mode_object_find - look up a drm object with static lifetime
364 * @dev: drm device
365 * @id: id of the mode object
366 * @type: type of the mode object
367 *
368 * Note that framebuffers cannot be looked up with this functions - since those
98f75de4
RC		 369 * are reference counted, they need special treatment. Even with
370 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
371 * rather than WARN_ON()).
786b99ed 372 */
7a9c9060
DV		 373struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
374 uint32_t id, uint32_t type)
f453ba04 375{
ad2563c2 376 struct drm_mode_object *obj = NULL;
f453ba04 377
786b99ed
DV		 378 /* Framebuffers are reference counted and need their own lookup
379 * function.*/
380 WARN_ON(type == DRM_MODE_OBJECT_FB);
98f75de4 381 obj = _object_find(dev, id, type);
f453ba04
DA		 382 return obj;
383}
384EXPORT_SYMBOL(drm_mode_object_find);
385
f453ba04
DA		 386/**
387 * drm_framebuffer_init - initialize a framebuffer
388 * @dev: DRM device
065a50ed
DV		 389 * @fb: framebuffer to be initialized
390 * @funcs: ... with these functions
f453ba04 391 *
f453ba04
DA		 392 * Allocates an ID for the framebuffer's parent mode object, sets its mode
393 * functions & device file and adds it to the master fd list.
394 *
4b096ac1
DV		 395 * IMPORTANT:
396 * This functions publishes the fb and makes it available for concurrent access
397 * by other users. Which means by this point the fb _must_ be fully set up -
398 * since all the fb attributes are invariant over its lifetime, no further
399 * locking but only correct reference counting is required.
400 *
c8e32cc1 401 * Returns:
af901ca1 402 * Zero on success, error code on failure.
f453ba04
DA		 403 */
404int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
405 const struct drm_framebuffer_funcs *funcs)
406{
407 int ret;
408
4b096ac1 409 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e 410 kref_init(&fb->refcount);
4b096ac1
DV		 411 INIT_LIST_HEAD(&fb->filp_head);
412 fb->dev = dev;
413 fb->funcs = funcs;
f7eff60e 414
f453ba04 415 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
6bfc56aa 416 if (ret)
4b096ac1 417 goto out;
f453ba04 418
f453ba04
DA		 419 dev->mode_config.num_fb++;
420 list_add(&fb->head, &dev->mode_config.fb_list);
4b096ac1
DV		 421out:
422 mutex_unlock(&dev->mode_config.fb_lock);
f453ba04
DA		 423
424 return 0;
425}
426EXPORT_SYMBOL(drm_framebuffer_init);
427
83f45fc3
DV		 428/* dev->mode_config.fb_lock must be held! */
429static void __drm_framebuffer_unregister(struct drm_device *dev,
430 struct drm_framebuffer *fb)
431{
432 mutex_lock(&dev->mode_config.idr_mutex);
433 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
434 mutex_unlock(&dev->mode_config.idr_mutex);
435
436 fb->base.id = 0;
437}
438
f7eff60e
RC		 439static void drm_framebuffer_free(struct kref *kref)
440{
441 struct drm_framebuffer *fb =
442 container_of(kref, struct drm_framebuffer, refcount);
83f45fc3
DV		 443 struct drm_device *dev = fb->dev;
444
445 /*
446 * The lookup idr holds a weak reference, which has not necessarily been
447 * removed at this point. Check for that.
448 */
449 mutex_lock(&dev->mode_config.fb_lock);
450 if (fb->base.id) {
451 /* Mark fb as reaped and drop idr ref. */
452 __drm_framebuffer_unregister(dev, fb);
453 }
454 mutex_unlock(&dev->mode_config.fb_lock);
455
f7eff60e
RC		 456 fb->funcs->destroy(fb);
457}
458
2b677e8c
DV		 459static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
460 uint32_t id)
461{
462 struct drm_mode_object *obj = NULL;
463 struct drm_framebuffer *fb;
464
465 mutex_lock(&dev->mode_config.idr_mutex);
466 obj = idr_find(&dev->mode_config.crtc_idr, id);
467 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
468 fb = NULL;
469 else
470 fb = obj_to_fb(obj);
471 mutex_unlock(&dev->mode_config.idr_mutex);
472
473 return fb;
474}
475
786b99ed
DV		 476/**
477 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
478 * @dev: drm device
479 * @id: id of the fb object
480 *
481 * If successful, this grabs an additional reference to the framebuffer -
482 * callers need to make sure to eventually unreference the returned framebuffer
c8e32cc1 483 * again, using @drm_framebuffer_unreference.
786b99ed
DV		 484 */
485struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
486 uint32_t id)
487{
786b99ed
DV		 488 struct drm_framebuffer *fb;
489
490 mutex_lock(&dev->mode_config.fb_lock);
2b677e8c 491 fb = __drm_framebuffer_lookup(dev, id);
83f45fc3
DV		 492 if (fb) {
493 if (!kref_get_unless_zero(&fb->refcount))
494 fb = NULL;
495 }
786b99ed
DV		 496 mutex_unlock(&dev->mode_config.fb_lock);
497
498 return fb;
499}
500EXPORT_SYMBOL(drm_framebuffer_lookup);
501
f7eff60e
RC		 502/**
503 * drm_framebuffer_unreference - unref a framebuffer
065a50ed
DV		 504 * @fb: framebuffer to unref
505 *
506 * This functions decrements the fb's refcount and frees it if it drops to zero.
f7eff60e
RC		 507 */
508void drm_framebuffer_unreference(struct drm_framebuffer *fb)
509{
8291272a 510 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 511 kref_put(&fb->refcount, drm_framebuffer_free);
512}
513EXPORT_SYMBOL(drm_framebuffer_unreference);
514
515/**
516 * drm_framebuffer_reference - incr the fb refcnt
065a50ed 517 * @fb: framebuffer
c8e32cc1
DV		 518 *
519 * This functions increments the fb's refcount.
f7eff60e
RC		 520 */
521void drm_framebuffer_reference(struct drm_framebuffer *fb)
522{
8291272a 523 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 524 kref_get(&fb->refcount);
525}
526EXPORT_SYMBOL(drm_framebuffer_reference);
527
36206361
DV		 528/**
529 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
530 * @fb: fb to unregister
531 *
532 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
533 * those used for fbdev. Note that the caller must hold a reference of it's own,
534 * i.e. the object may not be destroyed through this call (since it'll lead to a
535 * locking inversion).
536 */
537void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
538{
2b677e8c
DV		 539 struct drm_device *dev = fb->dev;
540
541 mutex_lock(&dev->mode_config.fb_lock);
542 /* Mark fb as reaped and drop idr ref. */
543 __drm_framebuffer_unregister(dev, fb);
544 mutex_unlock(&dev->mode_config.fb_lock);
36206361
DV		 545}
546EXPORT_SYMBOL(drm_framebuffer_unregister_private);
547
f453ba04
DA		 548/**
549 * drm_framebuffer_cleanup - remove a framebuffer object
550 * @fb: framebuffer to remove
551 *
c8e32cc1
DV		 552 * Cleanup framebuffer. This function is intended to be used from the drivers
553 * ->destroy callback. It can also be used to clean up driver private
554 * framebuffers embedded into a larger structure.
36206361
DV		 555 *
556 * Note that this function does not remove the fb from active usuage - if it is
557 * still used anywhere, hilarity can ensue since userspace could call getfb on
558 * the id and get back -EINVAL. Obviously no concern at driver unload time.
559 *
560 * Also, the framebuffer will not be removed from the lookup idr - for
561 * user-created framebuffers this will happen in in the rmfb ioctl. For
562 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
563 * drm_framebuffer_unregister_private.
f453ba04
DA		 564 */
565void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
f7eff60e
RC		 566{
567 struct drm_device *dev = fb->dev;
8faf6b18 568
4b096ac1 569 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e
RC		 570 list_del(&fb->head);
571 dev->mode_config.num_fb--;
4b096ac1 572 mutex_unlock(&dev->mode_config.fb_lock);
f7eff60e
RC		 573}
574EXPORT_SYMBOL(drm_framebuffer_cleanup);
575
576/**
577 * drm_framebuffer_remove - remove and unreference a framebuffer object
578 * @fb: framebuffer to remove
579 *
f7eff60e 580 * Scans all the CRTCs and planes in @dev's mode_config. If they're
36206361 581 * using @fb, removes it, setting it to NULL. Then drops the reference to the
b62584e3
DV		 582 * passed-in framebuffer. Might take the modeset locks.
583 *
584 * Note that this function optimizes the cleanup away if the caller holds the
585 * last reference to the framebuffer. It is also guaranteed to not take the
586 * modeset locks in this case.
f7eff60e
RC		 587 */
588void drm_framebuffer_remove(struct drm_framebuffer *fb)
f453ba04
DA		 589{
590 struct drm_device *dev = fb->dev;
591 struct drm_crtc *crtc;
8cf5c917 592 struct drm_plane *plane;
5ef5f72f
DA		 593 struct drm_mode_set set;
594 int ret;
f453ba04 595
4b096ac1 596 WARN_ON(!list_empty(&fb->filp_head));
8faf6b18 597
b62584e3
DV		 598 /*
599 * drm ABI mandates that we remove any deleted framebuffers from active
600 * useage. But since most sane clients only remove framebuffers they no
601 * longer need, try to optimize this away.
602 *
603 * Since we're holding a reference ourselves, observing a refcount of 1
604 * means that we're the last holder and can skip it. Also, the refcount
605 * can never increase from 1 again, so we don't need any barriers or
606 * locks.
607 *
608 * Note that userspace could try to race with use and instate a new
609 * usage _after_ we've cleared all current ones. End result will be an
610 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
611 * in this manner.
612 */
613 if (atomic_read(&fb->refcount.refcount) > 1) {
614 drm_modeset_lock_all(dev);
615 /* remove from any CRTC */
616 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
f4510a27 617 if (crtc->primary->fb == fb) {
b62584e3
DV		 618 /* should turn off the crtc */
619 memset(&set, 0, sizeof(struct drm_mode_set));
620 set.crtc = crtc;
621 set.fb = NULL;
622 ret = drm_mode_set_config_internal(&set);
623 if (ret)
624 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
625 }
5ef5f72f 626 }
f453ba04 627
b62584e3 628 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
9125e618
VS		 629 if (plane->fb == fb)
630 drm_plane_force_disable(plane);
8cf5c917 631 }
b62584e3 632 drm_modeset_unlock_all(dev);
8cf5c917
JB		 633 }
634
f7eff60e 635 drm_framebuffer_unreference(fb);
f453ba04 636}
f7eff60e 637EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04 638
51fd371b
RC		 639DEFINE_WW_CLASS(crtc_ww_class);
640
f453ba04 641/**
e13161af
MR		 642 * drm_crtc_init_with_planes - Initialise a new CRTC object with
643 * specified primary and cursor planes.
f453ba04
DA		 644 * @dev: DRM device
645 * @crtc: CRTC object to init
e13161af
MR		 646 * @primary: Primary plane for CRTC
647 * @cursor: Cursor plane for CRTC
f453ba04
DA		 648 * @funcs: callbacks for the new CRTC
649 *
ad6f5c34 650 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 651 *
c8e32cc1 652 * Returns:
6bfc56aa 653 * Zero on success, error code on failure.
f453ba04 654 */
e13161af
MR		 655int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
656 struct drm_plane *primary,
fc1d3e44 657 struct drm_plane *cursor,
e13161af 658 const struct drm_crtc_funcs *funcs)
f453ba04 659{
51fd371b 660 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 661 int ret;
662
522cf91f
BG		 663 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
664 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
665
f453ba04
DA		 666 crtc->dev = dev;
667 crtc->funcs = funcs;
7c80e128 668 crtc->invert_dimensions = false;
f453ba04 669
51fd371b 670 drm_modeset_lock_init(&crtc->mutex);
6bfc56aa
VS		 671 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
672 if (ret)
baf698b0 673 return ret;
f453ba04 674
bffd9de0
PZ		 675 crtc->base.properties = &crtc->properties;
676
51fd371b
RC		 677 list_add_tail(&crtc->head, &config->crtc_list);
678 config->num_crtc++;
6bfc56aa 679
e13161af 680 crtc->primary = primary;
fc1d3e44 681 crtc->cursor = cursor;
e13161af
MR		 682 if (primary)
683 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
fc1d3e44
MR		 684 if (cursor)
685 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
e13161af 686
eab3bbef
DV		 687 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
688 drm_object_attach_property(&crtc->base, config->prop_active, 0);
689 }
690
baf698b0 691 return 0;
f453ba04 692}
e13161af 693EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 694
695/**
ad6f5c34 696 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 697 * @crtc: CRTC to cleanup
698 *
ad6f5c34
VS		 699 * This function cleans up @crtc and removes it from the DRM mode setting
700 * core. Note that the function does *not* free the crtc structure itself,
701 * this is the responsibility of the caller.
f453ba04
DA		 702 */
703void drm_crtc_cleanup(struct drm_crtc *crtc)
704{
705 struct drm_device *dev = crtc->dev;
706
9e1c156f
SK		 707 kfree(crtc->gamma_store);
708 crtc->gamma_store = NULL;
f453ba04 709
51fd371b
RC		 710 drm_modeset_lock_fini(&crtc->mutex);
711
f453ba04
DA		 712 drm_mode_object_put(dev, &crtc->base);
713 list_del(&crtc->head);
714 dev->mode_config.num_crtc--;
3009c037
TR		 715
716 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
717 if (crtc->state && crtc->funcs->atomic_destroy_state)
718 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
a18c0af1
TR		 719
720 memset(crtc, 0, sizeof(*crtc));
f453ba04
DA		 721}
722EXPORT_SYMBOL(drm_crtc_cleanup);
723
db5f7a6e
RK		 724/**
725 * drm_crtc_index - find the index of a registered CRTC
726 * @crtc: CRTC to find index for
727 *
728 * Given a registered CRTC, return the index of that CRTC within a DRM
729 * device's list of CRTCs.
730 */
731unsigned int drm_crtc_index(struct drm_crtc *crtc)
732{
733 unsigned int index = 0;
734 struct drm_crtc *tmp;
735
736 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
737 if (tmp == crtc)
738 return index;
739
740 index++;
741 }
742
743 BUG();
744}
745EXPORT_SYMBOL(drm_crtc_index);
746
86f422d5 747/*
f453ba04
DA		 748 * drm_mode_remove - remove and free a mode
749 * @connector: connector list to modify
750 * @mode: mode to remove
751 *
f453ba04
DA		 752 * Remove @mode from @connector's mode list, then free it.
753 */
86f422d5
LD		 754static void drm_mode_remove(struct drm_connector *connector,
755 struct drm_display_mode *mode)
f453ba04
DA		 756{
757 list_del(&mode->head);
554f1d78 758 drm_mode_destroy(connector->dev, mode);
f453ba04 759}
f453ba04 760
b5571e9d
BB		 761/**
762 * drm_display_info_set_bus_formats - set the supported bus formats
763 * @info: display info to store bus formats in
e37bfa1a
BB		 764 * @formats: array containing the supported bus formats
765 * @num_formats: the number of entries in the fmts array
b5571e9d
BB		 766 *
767 * Store the supported bus formats in display info structure.
768 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
769 * a full list of available formats.
770 */
771int drm_display_info_set_bus_formats(struct drm_display_info *info,
772 const u32 *formats,
773 unsigned int num_formats)
774{
775 u32 *fmts = NULL;
776
777 if (!formats && num_formats)
778 return -EINVAL;
779
780 if (formats && num_formats) {
781 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
782 GFP_KERNEL);
944579c5 783 if (!fmts)
b5571e9d
BB		 784 return -ENOMEM;
785 }
786
787 kfree(info->bus_formats);
788 info->bus_formats = fmts;
789 info->num_bus_formats = num_formats;
790
791 return 0;
792}
793EXPORT_SYMBOL(drm_display_info_set_bus_formats);
794
eaf99c74
CW		 795/**
796 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
797 * @connector: connector to quwery
eaf99c74
CW		 798 *
799 * The kernel supports per-connector configration of its consoles through
800 * use of the video= parameter. This function parses that option and
801 * extracts the user's specified mode (or enable/disable status) for a
802 * particular connector. This is typically only used during the early fbdev
803 * setup.
804 */
805static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
806{
807 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
808 char *option = NULL;
809
810 if (fb_get_options(connector->name, &option))
811 return;
812
813 if (!drm_mode_parse_command_line_for_connector(option,
814 connector,
815 mode))
816 return;
817
818 if (mode->force) {
819 const char *s;
820
821 switch (mode->force) {
822 case DRM_FORCE_OFF:
823 s = "OFF";
824 break;
825 case DRM_FORCE_ON_DIGITAL:
826 s = "ON - dig";
827 break;
828 default:
829 case DRM_FORCE_ON:
830 s = "ON";
831 break;
832 }
833
834 DRM_INFO("forcing %s connector %s\n", connector->name, s);
835 connector->force = mode->force;
836 }
837
838 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
839 connector->name,
840 mode->xres, mode->yres,
841 mode->refresh_specified ? mode->refresh : 60,
842 mode->rb ? " reduced blanking" : "",
843 mode->margins ? " with margins" : "",
844 mode->interlace ? " interlaced" : "");
845}
846
f453ba04
DA		 847/**
848 * drm_connector_init - Init a preallocated connector
849 * @dev: DRM device
850 * @connector: the connector to init
851 * @funcs: callbacks for this connector
065a50ed 852 * @connector_type: user visible type of the connector
f453ba04 853 *
f453ba04
DA		 854 * Initialises a preallocated connector. Connectors should be
855 * subclassed as part of driver connector objects.
6bfc56aa 856 *
c8e32cc1 857 * Returns:
6bfc56aa 858 * Zero on success, error code on failure.
f453ba04 859 */
6bfc56aa
VS		 860int drm_connector_init(struct drm_device *dev,
861 struct drm_connector *connector,
862 const struct drm_connector_funcs *funcs,
863 int connector_type)
f453ba04 864{
ae16c597 865 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa 866 int ret;
b21e3afe
IM		 867 struct ida *connector_ida =
868 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 869
84849903 870 drm_modeset_lock_all(dev);
f453ba04 871
2ee39452 872 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
6bfc56aa 873 if (ret)
2abdd313 874 goto out_unlock;
6bfc56aa 875
7e3bdf4a 876 connector->base.properties = &connector->properties;
f453ba04
DA		 877 connector->dev = dev;
878 connector->funcs = funcs;
f453ba04
DA		 879 connector->connector_type = connector_type;
880 connector->connector_type_id =
b21e3afe
IM		 881 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
882 if (connector->connector_type_id < 0) {
883 ret = connector->connector_type_id;
2abdd313 884 goto out_put;
b21e3afe 885 }
2abdd313
JN		 886 connector->name =
887 kasprintf(GFP_KERNEL, "%s-%d",
888 drm_connector_enum_list[connector_type].name,
889 connector->connector_type_id);
890 if (!connector->name) {
891 ret = -ENOMEM;
892 goto out_put;
893 }
894
f453ba04
DA		 895 INIT_LIST_HEAD(&connector->probed_modes);
896 INIT_LIST_HEAD(&connector->modes);
897 connector->edid_blob_ptr = NULL;
5e2cb2f6 898 connector->status = connector_status_unknown;
f453ba04 899
eaf99c74
CW		 900 drm_connector_get_cmdline_mode(connector);
901
c7eb76f4
DV		 902 /* We should add connectors at the end to avoid upsetting the connector
903 * index too much. */
ae16c597
RC		 904 list_add_tail(&connector->head, &config->connector_list);
905 config->num_connector++;
f453ba04 906
a7331e5c 907 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 908 drm_object_attach_property(&connector->base,
ae16c597 909 config->edid_property,
a7331e5c 910 0);
f453ba04 911
58495563 912 drm_object_attach_property(&connector->base,
ae16c597
RC		 913 config->dpms_property, 0);
914
915 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
916 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
917 }
f453ba04 918
30f65707
TW		 919 connector->debugfs_entry = NULL;
920
2abdd313
JN		 921out_put:
922 if (ret)
923 drm_mode_object_put(dev, &connector->base);
924
925out_unlock:
84849903 926 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 927
928 return ret;
f453ba04
DA		 929}
930EXPORT_SYMBOL(drm_connector_init);
931
932/**
933 * drm_connector_cleanup - cleans up an initialised connector
934 * @connector: connector to cleanup
935 *
f453ba04
DA		 936 * Cleans up the connector but doesn't free the object.
937 */
938void drm_connector_cleanup(struct drm_connector *connector)
939{
940 struct drm_device *dev = connector->dev;
941 struct drm_display_mode *mode, *t;
942
40d9b043
DA		 943 if (connector->tile_group) {
944 drm_mode_put_tile_group(dev, connector->tile_group);
945 connector->tile_group = NULL;
946 }
947
f453ba04
DA		 948 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
949 drm_mode_remove(connector, mode);
950
951 list_for_each_entry_safe(mode, t, &connector->modes, head)
952 drm_mode_remove(connector, mode);
953
b21e3afe
IM		 954 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
955 connector->connector_type_id);
956
b5571e9d 957 kfree(connector->display_info.bus_formats);
f453ba04 958 drm_mode_object_put(dev, &connector->base);
2abdd313
JN		 959 kfree(connector->name);
960 connector->name = NULL;
f453ba04 961 list_del(&connector->head);
6380c509 962 dev->mode_config.num_connector--;
3009c037
TR		 963
964 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
965 if (connector->state && connector->funcs->atomic_destroy_state)
966 connector->funcs->atomic_destroy_state(connector,
967 connector->state);
a18c0af1
TR		 968
969 memset(connector, 0, sizeof(*connector));
f453ba04
DA		 970}
971EXPORT_SYMBOL(drm_connector_cleanup);
972
10f637bf
DV		 973/**
974 * drm_connector_index - find the index of a registered connector
975 * @connector: connector to find index for
976 *
977 * Given a registered connector, return the index of that connector within a DRM
978 * device's list of connectors.
979 */
980unsigned int drm_connector_index(struct drm_connector *connector)
981{
982 unsigned int index = 0;
983 struct drm_connector *tmp;
c7eb76f4
DV		 984 struct drm_mode_config *config = &connector->dev->mode_config;
985
986 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
10f637bf
DV		 987
988 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
989 if (tmp == connector)
990 return index;
991
992 index++;
993 }
994
995 BUG();
996}
997EXPORT_SYMBOL(drm_connector_index);
998
34ea3d38
TW		 999/**
1000 * drm_connector_register - register a connector
1001 * @connector: the connector to register
1002 *
1003 * Register userspace interfaces for a connector
1004 *
1005 * Returns:
1006 * Zero on success, error code on failure.
1007 */
1008int drm_connector_register(struct drm_connector *connector)
1009{
30f65707
TW		 1010 int ret;
1011
2ee39452
DA		 1012 drm_mode_object_register(connector->dev, &connector->base);
1013
30f65707
TW		 1014 ret = drm_sysfs_connector_add(connector);
1015 if (ret)
1016 return ret;
1017
1018 ret = drm_debugfs_connector_add(connector);
1019 if (ret) {
1020 drm_sysfs_connector_remove(connector);
1021 return ret;
1022 }
1023
1024 return 0;
34ea3d38
TW		 1025}
1026EXPORT_SYMBOL(drm_connector_register);
1027
1028/**
1029 * drm_connector_unregister - unregister a connector
1030 * @connector: the connector to unregister
1031 *
1032 * Unregister userspace interfaces for a connector
1033 */
1034void drm_connector_unregister(struct drm_connector *connector)
1035{
1036 drm_sysfs_connector_remove(connector);
30f65707 1037 drm_debugfs_connector_remove(connector);
34ea3d38
TW		 1038}
1039EXPORT_SYMBOL(drm_connector_unregister);
1040
1041
c8e32cc1
DV		 1042/**
1043 * drm_connector_unplug_all - unregister connector userspace interfaces
1044 * @dev: drm device
1045 *
1046 * This function unregisters all connector userspace interfaces in sysfs. Should
1047 * be call when the device is disconnected, e.g. from an usb driver's
1048 * ->disconnect callback.
1049 */
cbc7e221
DA		 1050void drm_connector_unplug_all(struct drm_device *dev)
1051{
1052 struct drm_connector *connector;
1053
1054 /* taking the mode config mutex ends up in a clash with sysfs */
1055 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
34ea3d38 1056 drm_connector_unregister(connector);
cbc7e221
DA		 1057
1058}
1059EXPORT_SYMBOL(drm_connector_unplug_all);
1060
c8e32cc1
DV		 1061/**
1062 * drm_encoder_init - Init a preallocated encoder
1063 * @dev: drm device
1064 * @encoder: the encoder to init
1065 * @funcs: callbacks for this encoder
1066 * @encoder_type: user visible type of the encoder
1067 *
1068 * Initialises a preallocated encoder. Encoder should be
1069 * subclassed as part of driver encoder objects.
1070 *
1071 * Returns:
1072 * Zero on success, error code on failure.
1073 */
6bfc56aa 1074int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 1075 struct drm_encoder *encoder,
1076 const struct drm_encoder_funcs *funcs,
1077 int encoder_type)
f453ba04 1078{
6bfc56aa
VS		 1079 int ret;
1080
84849903 1081 drm_modeset_lock_all(dev);
f453ba04 1082
6bfc56aa
VS		 1083 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1084 if (ret)
e5748946 1085 goto out_unlock;
f453ba04 1086
6bfc56aa 1087 encoder->dev = dev;
f453ba04
DA		 1088 encoder->encoder_type = encoder_type;
1089 encoder->funcs = funcs;
e5748946
JN		 1090 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1091 drm_encoder_enum_list[encoder_type].name,
1092 encoder->base.id);
1093 if (!encoder->name) {
1094 ret = -ENOMEM;
1095 goto out_put;
1096 }
f453ba04
DA		 1097
1098 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1099 dev->mode_config.num_encoder++;
1100
e5748946
JN		 1101out_put:
1102 if (ret)
1103 drm_mode_object_put(dev, &encoder->base);
1104
1105out_unlock:
84849903 1106 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 1107
1108 return ret;
f453ba04
DA		 1109}
1110EXPORT_SYMBOL(drm_encoder_init);
1111
c8e32cc1
DV		 1112/**
1113 * drm_encoder_cleanup - cleans up an initialised encoder
1114 * @encoder: encoder to cleanup
1115 *
1116 * Cleans up the encoder but doesn't free the object.
1117 */
f453ba04
DA		 1118void drm_encoder_cleanup(struct drm_encoder *encoder)
1119{
1120 struct drm_device *dev = encoder->dev;
4dfd909f 1121
84849903 1122 drm_modeset_lock_all(dev);
f453ba04 1123 drm_mode_object_put(dev, &encoder->base);
e5748946 1124 kfree(encoder->name);
f453ba04 1125 list_del(&encoder->head);
6380c509 1126 dev->mode_config.num_encoder--;
84849903 1127 drm_modeset_unlock_all(dev);
a18c0af1
TR		 1128
1129 memset(encoder, 0, sizeof(*encoder));
f453ba04
DA		 1130}
1131EXPORT_SYMBOL(drm_encoder_cleanup);
1132
35f2c3ae 1133/**
dc415ff9 1134 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1135 * @dev: DRM device
1136 * @plane: plane object to init
1137 * @possible_crtcs: bitmask of possible CRTCs
1138 * @funcs: callbacks for the new plane
1139 * @formats: array of supported formats (%DRM_FORMAT_*)
1140 * @format_count: number of elements in @formats
dc415ff9 1141 * @type: type of plane (overlay, primary, cursor)
35f2c3ae 1142 *
dc415ff9 1143 * Initializes a plane object of type @type.
35f2c3ae 1144 *
c8e32cc1 1145 * Returns:
35f2c3ae
VS		 1146 * Zero on success, error code on failure.
1147 */
dc415ff9
MR		 1148int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1149 unsigned long possible_crtcs,
1150 const struct drm_plane_funcs *funcs,
1151 const uint32_t *formats, uint32_t format_count,
1152 enum drm_plane_type type)
8cf5c917 1153{
6b4959f4 1154 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 1155 int ret;
1156
6bfc56aa
VS		 1157 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1158 if (ret)
baf698b0 1159 return ret;
6bfc56aa 1160
4d02e2de
DV		 1161 drm_modeset_lock_init(&plane->mutex);
1162
4d93914a 1163 plane->base.properties = &plane->properties;
8cf5c917 1164 plane->dev = dev;
8cf5c917 1165 plane->funcs = funcs;
2f6c5389
TR		 1166 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1167 GFP_KERNEL);
8cf5c917
JB		 1168 if (!plane->format_types) {
1169 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1170 drm_mode_object_put(dev, &plane->base);
baf698b0 1171 return -ENOMEM;
8cf5c917
JB		 1172 }
1173
308e5bcb 1174 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1175 plane->format_count = format_count;
1176 plane->possible_crtcs = possible_crtcs;
dc415ff9 1177 plane->type = type;
8cf5c917 1178
6b4959f4
RC		 1179 list_add_tail(&plane->head, &config->plane_list);
1180 config->num_total_plane++;
dc415ff9 1181 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
6b4959f4 1182 config->num_overlay_plane++;
8cf5c917 1183
9922ab5a 1184 drm_object_attach_property(&plane->base,
6b4959f4 1185 config->plane_type_property,
9922ab5a
RC		 1186 plane->type);
1187
6b4959f4
RC		 1188 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1189 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1190 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1191 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1192 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1193 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1194 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1195 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1196 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1197 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1198 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1199 }
1200
baf698b0 1201 return 0;
8cf5c917 1202}
dc415ff9
MR		 1203EXPORT_SYMBOL(drm_universal_plane_init);
1204
1205/**
1206 * drm_plane_init - Initialize a legacy plane
1207 * @dev: DRM device
1208 * @plane: plane object to init
1209 * @possible_crtcs: bitmask of possible CRTCs
1210 * @funcs: callbacks for the new plane
1211 * @formats: array of supported formats (%DRM_FORMAT_*)
1212 * @format_count: number of elements in @formats
1213 * @is_primary: plane type (primary vs overlay)
1214 *
1215 * Legacy API to initialize a DRM plane.
1216 *
1217 * New drivers should call drm_universal_plane_init() instead.
1218 *
1219 * Returns:
1220 * Zero on success, error code on failure.
1221 */
1222int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1223 unsigned long possible_crtcs,
1224 const struct drm_plane_funcs *funcs,
1225 const uint32_t *formats, uint32_t format_count,
1226 bool is_primary)
1227{
1228 enum drm_plane_type type;
1229
1230 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1231 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1232 formats, format_count, type);
1233}
8cf5c917
JB		 1234EXPORT_SYMBOL(drm_plane_init);
1235
35f2c3ae
VS		 1236/**
1237 * drm_plane_cleanup - Clean up the core plane usage
1238 * @plane: plane to cleanup
1239 *
1240 * This function cleans up @plane and removes it from the DRM mode setting
1241 * core. Note that the function does *not* free the plane structure itself,
1242 * this is the responsibility of the caller.
1243 */
8cf5c917
JB		 1244void drm_plane_cleanup(struct drm_plane *plane)
1245{
1246 struct drm_device *dev = plane->dev;
1247
84849903 1248 drm_modeset_lock_all(dev);
8cf5c917
JB		 1249 kfree(plane->format_types);
1250 drm_mode_object_put(dev, &plane->base);
dc415ff9
MR		 1251
1252 BUG_ON(list_empty(&plane->head));
1253
1254 list_del(&plane->head);
1255 dev->mode_config.num_total_plane--;
1256 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1257 dev->mode_config.num_overlay_plane--;
84849903 1258 drm_modeset_unlock_all(dev);
3009c037
TR		 1259
1260 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1261 if (plane->state && plane->funcs->atomic_destroy_state)
1262 plane->funcs->atomic_destroy_state(plane, plane->state);
a18c0af1
TR		 1263
1264 memset(plane, 0, sizeof(*plane));
8cf5c917
JB		 1265}
1266EXPORT_SYMBOL(drm_plane_cleanup);
1267
10f637bf
DV		 1268/**
1269 * drm_plane_index - find the index of a registered plane
1270 * @plane: plane to find index for
1271 *
1272 * Given a registered plane, return the index of that CRTC within a DRM
1273 * device's list of planes.
1274 */
1275unsigned int drm_plane_index(struct drm_plane *plane)
1276{
1277 unsigned int index = 0;
1278 struct drm_plane *tmp;
1279
1280 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1281 if (tmp == plane)
1282 return index;
1283
1284 index++;
1285 }
1286
1287 BUG();
1288}
1289EXPORT_SYMBOL(drm_plane_index);
1290
35f2c3ae
VS		 1291/**
1292 * drm_plane_force_disable - Forcibly disable a plane
1293 * @plane: plane to disable
1294 *
1295 * Forces the plane to be disabled.
1296 *
1297 * Used when the plane's current framebuffer is destroyed,
1298 * and when restoring fbdev mode.
1299 */
9125e618
VS		 1300void drm_plane_force_disable(struct drm_plane *plane)
1301{
1302 int ret;
1303
3d30a59b 1304 if (!plane->fb)
9125e618
VS		 1305 return;
1306
3d30a59b 1307 plane->old_fb = plane->fb;
9125e618 1308 ret = plane->funcs->disable_plane(plane);
731cce48 1309 if (ret) {
9125e618 1310 DRM_ERROR("failed to disable plane with busy fb\n");
3d30a59b 1311 plane->old_fb = NULL;
731cce48
DV		 1312 return;
1313 }
9125e618 1314 /* disconnect the plane from the fb and crtc: */
220dd2bc 1315 drm_framebuffer_unreference(plane->old_fb);
3d30a59b 1316 plane->old_fb = NULL;
9125e618
VS		 1317 plane->fb = NULL;
1318 plane->crtc = NULL;
1319}
1320EXPORT_SYMBOL(drm_plane_force_disable);
1321
6b4959f4 1322static int drm_mode_create_standard_properties(struct drm_device *dev)
f453ba04 1323{
356af0e1 1324 struct drm_property *prop;
f453ba04
DA		 1325
1326 /*
1327 * Standard properties (apply to all connectors)
1328 */
356af0e1 1329 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
f453ba04
DA		 1330 DRM_MODE_PROP_IMMUTABLE,
1331 "EDID", 0);
356af0e1
RC		 1332 if (!prop)
1333 return -ENOMEM;
1334 dev->mode_config.edid_property = prop;
f453ba04 1335
356af0e1 1336 prop = drm_property_create_enum(dev, 0,
4a67d391
SH		 1337 "DPMS", drm_dpms_enum_list,
1338 ARRAY_SIZE(drm_dpms_enum_list));
356af0e1
RC		 1339 if (!prop)
1340 return -ENOMEM;
1341 dev->mode_config.dpms_property = prop;
6f134d7b 1342
356af0e1
RC		 1343 prop = drm_property_create(dev,
1344 DRM_MODE_PROP_BLOB |
1345 DRM_MODE_PROP_IMMUTABLE,
1346 "PATH", 0);
1347 if (!prop)
1348 return -ENOMEM;
1349 dev->mode_config.path_property = prop;
f453ba04 1350
356af0e1
RC		 1351 prop = drm_property_create(dev,
1352 DRM_MODE_PROP_BLOB |
1353 DRM_MODE_PROP_IMMUTABLE,
1354 "TILE", 0);
1355 if (!prop)
1356 return -ENOMEM;
1357 dev->mode_config.tile_property = prop;
9922ab5a 1358
6b4959f4 1359 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
9922ab5a
RC		 1360 "type", drm_plane_type_enum_list,
1361 ARRAY_SIZE(drm_plane_type_enum_list));
6b4959f4
RC		 1362 if (!prop)
1363 return -ENOMEM;
1364 dev->mode_config.plane_type_property = prop;
1365
1366 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1367 "SRC_X", 0, UINT_MAX);
1368 if (!prop)
1369 return -ENOMEM;
1370 dev->mode_config.prop_src_x = prop;
1371
1372 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1373 "SRC_Y", 0, UINT_MAX);
1374 if (!prop)
1375 return -ENOMEM;
1376 dev->mode_config.prop_src_y = prop;
1377
1378 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1379 "SRC_W", 0, UINT_MAX);
1380 if (!prop)
1381 return -ENOMEM;
1382 dev->mode_config.prop_src_w = prop;
1383
1384 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1385 "SRC_H", 0, UINT_MAX);
1386 if (!prop)
1387 return -ENOMEM;
1388 dev->mode_config.prop_src_h = prop;
1389
1390 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1391 "CRTC_X", INT_MIN, INT_MAX);
1392 if (!prop)
1393 return -ENOMEM;
1394 dev->mode_config.prop_crtc_x = prop;
1395
1396 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1397 "CRTC_Y", INT_MIN, INT_MAX);
1398 if (!prop)
1399 return -ENOMEM;
1400 dev->mode_config.prop_crtc_y = prop;
1401
1402 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1403 "CRTC_W", 0, INT_MAX);
1404 if (!prop)
1405 return -ENOMEM;
1406 dev->mode_config.prop_crtc_w = prop;
1407
1408 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1409 "CRTC_H", 0, INT_MAX);
1410 if (!prop)
1411 return -ENOMEM;
1412 dev->mode_config.prop_crtc_h = prop;
1413
1414 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1415 "FB_ID", DRM_MODE_OBJECT_FB);
1416 if (!prop)
1417 return -ENOMEM;
1418 dev->mode_config.prop_fb_id = prop;
1419
1420 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1421 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1422 if (!prop)
1423 return -ENOMEM;
1424 dev->mode_config.prop_crtc_id = prop;
9922ab5a 1425
eab3bbef
DV		 1426 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1427 "ACTIVE");
1428 if (!prop)
1429 return -ENOMEM;
1430 dev->mode_config.prop_active = prop;
1431
9922ab5a
RC		 1432 return 0;
1433}
1434
f453ba04
DA		 1435/**
1436 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1437 * @dev: DRM device
1438 *
1439 * Called by a driver the first time a DVI-I connector is made.
1440 */
1441int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1442{
1443 struct drm_property *dvi_i_selector;
1444 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1445
1446 if (dev->mode_config.dvi_i_select_subconnector_property)
1447 return 0;
1448
1449 dvi_i_selector =
4a67d391 1450 drm_property_create_enum(dev, 0,
f453ba04 1451 "select subconnector",
4a67d391 1452 drm_dvi_i_select_enum_list,
f453ba04 1453 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1454 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1455
4a67d391 1456 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1457 "subconnector",
4a67d391 1458 drm_dvi_i_subconnector_enum_list,
f453ba04 1459 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1460 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1461
1462 return 0;
1463}
1464EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1465
1466/**
1467 * drm_create_tv_properties - create TV specific connector properties
1468 * @dev: DRM device
1469 * @num_modes: number of different TV formats (modes) supported
1470 * @modes: array of pointers to strings containing name of each format
1471 *
1472 * Called by a driver's TV initialization routine, this function creates
1473 * the TV specific connector properties for a given device. Caller is
1474 * responsible for allocating a list of format names and passing them to
1475 * this routine.
1476 */
2f763312
TR		 1477int drm_mode_create_tv_properties(struct drm_device *dev,
1478 unsigned int num_modes,
f453ba04
DA		 1479 char *modes[])
1480{
1481 struct drm_property *tv_selector;
1482 struct drm_property *tv_subconnector;
2f763312 1483 unsigned int i;
f453ba04
DA		 1484
1485 if (dev->mode_config.tv_select_subconnector_property)
1486 return 0;
1487
1488 /*
1489 * Basic connector properties
1490 */
4a67d391 1491 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1492 "select subconnector",
4a67d391 1493 drm_tv_select_enum_list,
f453ba04 1494 ARRAY_SIZE(drm_tv_select_enum_list));
f453ba04
DA		 1495 dev->mode_config.tv_select_subconnector_property = tv_selector;
1496
1497 tv_subconnector =
4a67d391
SH		 1498 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1499 "subconnector",
1500 drm_tv_subconnector_enum_list,
f453ba04 1501 ARRAY_SIZE(drm_tv_subconnector_enum_list));
f453ba04
DA		 1502 dev->mode_config.tv_subconnector_property = tv_subconnector;
1503
1504 /*
1505 * Other, TV specific properties: margins & TV modes.
1506 */
1507 dev->mode_config.tv_left_margin_property =
d9bc3c02 1508 drm_property_create_range(dev, 0, "left margin", 0, 100);
f453ba04
DA		 1509
1510 dev->mode_config.tv_right_margin_property =
d9bc3c02 1511 drm_property_create_range(dev, 0, "right margin", 0, 100);
f453ba04
DA		 1512
1513 dev->mode_config.tv_top_margin_property =
d9bc3c02 1514 drm_property_create_range(dev, 0, "top margin", 0, 100);
f453ba04
DA		 1515
1516 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1517 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
f453ba04
DA		 1518
1519 dev->mode_config.tv_mode_property =
1520 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1521 "mode", num_modes);
1522 for (i = 0; i < num_modes; i++)
1523 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1524 i, modes[i]);
1525
b6b7902e 1526 dev->mode_config.tv_brightness_property =
d9bc3c02 1527 drm_property_create_range(dev, 0, "brightness", 0, 100);
b6b7902e
FJ		 1528
1529 dev->mode_config.tv_contrast_property =
d9bc3c02 1530 drm_property_create_range(dev, 0, "contrast", 0, 100);
b6b7902e
FJ		 1531
1532 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1533 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
b6b7902e 1534
a75f0236 1535 dev->mode_config.tv_overscan_property =
d9bc3c02 1536 drm_property_create_range(dev, 0, "overscan", 0, 100);
a75f0236
FJ		 1537
1538 dev->mode_config.tv_saturation_property =
d9bc3c02 1539 drm_property_create_range(dev, 0, "saturation", 0, 100);
a75f0236
FJ		 1540
1541 dev->mode_config.tv_hue_property =
d9bc3c02 1542 drm_property_create_range(dev, 0, "hue", 0, 100);
a75f0236 1543
f453ba04
DA		 1544 return 0;
1545}
1546EXPORT_SYMBOL(drm_mode_create_tv_properties);
1547
1548/**
1549 * drm_mode_create_scaling_mode_property - create scaling mode property
1550 * @dev: DRM device
1551 *
1552 * Called by a driver the first time it's needed, must be attached to desired
1553 * connectors.
1554 */
1555int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1556{
1557 struct drm_property *scaling_mode;
f453ba04
DA		 1558
1559 if (dev->mode_config.scaling_mode_property)
1560 return 0;
1561
1562 scaling_mode =
4a67d391
SH		 1563 drm_property_create_enum(dev, 0, "scaling mode",
1564 drm_scaling_mode_enum_list,
f453ba04 1565 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1566
1567 dev->mode_config.scaling_mode_property = scaling_mode;
1568
1569 return 0;
1570}
1571EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1572
ff587e45
VK		 1573/**
1574 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1575 * @dev: DRM device
1576 *
1577 * Called by a driver the first time it's needed, must be attached to desired
1578 * connectors.
1579 *
1580 * Returns:
1a498633 1581 * Zero on success, negative errno on failure.
ff587e45
VK		 1582 */
1583int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1584{
1585 if (dev->mode_config.aspect_ratio_property)
1586 return 0;
1587
1588 dev->mode_config.aspect_ratio_property =
1589 drm_property_create_enum(dev, 0, "aspect ratio",
1590 drm_aspect_ratio_enum_list,
1591 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1592
1593 if (dev->mode_config.aspect_ratio_property == NULL)
1594 return -ENOMEM;
1595
1596 return 0;
1597}
1598EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1599
884840aa
JB		 1600/**
1601 * drm_mode_create_dirty_property - create dirty property
1602 * @dev: DRM device
1603 *
1604 * Called by a driver the first time it's needed, must be attached to desired
1605 * connectors.
1606 */
1607int drm_mode_create_dirty_info_property(struct drm_device *dev)
1608{
1609 struct drm_property *dirty_info;
884840aa
JB		 1610
1611 if (dev->mode_config.dirty_info_property)
1612 return 0;
1613
1614 dirty_info =
4a67d391 1615 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1616 "dirty",
4a67d391 1617 drm_dirty_info_enum_list,
884840aa 1618 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1619 dev->mode_config.dirty_info_property = dirty_info;
1620
1621 return 0;
1622}
1623EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1624
5bb2bbf5
DA		 1625/**
1626 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1627 * @dev: DRM device
1628 *
1629 * Create the the suggested x/y offset property for connectors.
1630 */
1631int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1632{
1633 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1634 return 0;
1635
1636 dev->mode_config.suggested_x_property =
1637 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1638
1639 dev->mode_config.suggested_y_property =
1640 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1641
1642 if (dev->mode_config.suggested_x_property == NULL ||
1643 dev->mode_config.suggested_y_property == NULL)
1644 return -ENOMEM;
1645 return 0;
1646}
1647EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1648
ea9cbb06 1649static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
f453ba04
DA		 1650{
1651 uint32_t total_objects = 0;
1652
1653 total_objects += dev->mode_config.num_crtc;
1654 total_objects += dev->mode_config.num_connector;
1655 total_objects += dev->mode_config.num_encoder;
1656
bd3f0ff9 1657 group->id_list = kcalloc(total_objects, sizeof(uint32_t), GFP_KERNEL);
f453ba04
DA		 1658 if (!group->id_list)
1659 return -ENOMEM;
1660
1661 group->num_crtcs = 0;
1662 group->num_connectors = 0;
1663 group->num_encoders = 0;
1664 return 0;
1665}
1666
ad222799
DA		 1667void drm_mode_group_destroy(struct drm_mode_group *group)
1668{
1669 kfree(group->id_list);
1670 group->id_list = NULL;
1671}
1672
c8e32cc1
DV		 1673/*
1674 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1675 * the drm core's responsibility to set up mode control groups.
1676 */
f453ba04
DA		 1677int drm_mode_group_init_legacy_group(struct drm_device *dev,
1678 struct drm_mode_group *group)
1679{
1680 struct drm_crtc *crtc;
1681 struct drm_encoder *encoder;
1682 struct drm_connector *connector;
1683 int ret;
1684
0cc0b223
TR		 1685 ret = drm_mode_group_init(dev, group);
1686 if (ret)
f453ba04
DA		 1687 return ret;
1688
1689 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1690 group->id_list[group->num_crtcs++] = crtc->base.id;
1691
1692 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1693 group->id_list[group->num_crtcs + group->num_encoders++] =
1694 encoder->base.id;
1695
1696 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1697 group->id_list[group->num_crtcs + group->num_encoders +
1698 group->num_connectors++] = connector->base.id;
1699
1700 return 0;
1701}
9c1dfc55 1702EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
f453ba04 1703
2390cd11
DA		 1704void drm_reinit_primary_mode_group(struct drm_device *dev)
1705{
1706 drm_modeset_lock_all(dev);
1707 drm_mode_group_destroy(&dev->primary->mode_group);
1708 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1709 drm_modeset_unlock_all(dev);
1710}
1711EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1712
f453ba04
DA		 1713/**
1714 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1715 * @out: drm_mode_modeinfo struct to return to the user
1716 * @in: drm_display_mode to use
1717 *
f453ba04
DA		 1718 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1719 * the user.
1720 */
93bbf6db
VS		 1721static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1722 const struct drm_display_mode *in)
f453ba04 1723{
e36fae38
VS		 1724 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1725 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1726 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1727 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1728 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1729 "timing values too large for mode info\n");
1730
f453ba04
DA		 1731 out->clock = in->clock;
1732 out->hdisplay = in->hdisplay;
1733 out->hsync_start = in->hsync_start;
1734 out->hsync_end = in->hsync_end;
1735 out->htotal = in->htotal;
1736 out->hskew = in->hskew;
1737 out->vdisplay = in->vdisplay;
1738 out->vsync_start = in->vsync_start;
1739 out->vsync_end = in->vsync_end;
1740 out->vtotal = in->vtotal;
1741 out->vscan = in->vscan;
1742 out->vrefresh = in->vrefresh;
1743 out->flags = in->flags;
1744 out->type = in->type;
1745 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1746 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1747}
1748
1749/**
74afee7d 1750 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
f453ba04
DA		 1751 * @out: drm_display_mode to return to the user
1752 * @in: drm_mode_modeinfo to use
1753 *
f453ba04
DA		 1754 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1755 * the caller.
90367bf6 1756 *
c8e32cc1 1757 * Returns:
1a498633 1758 * Zero on success, negative errno on failure.
f453ba04 1759 */
93bbf6db
VS		 1760static int drm_crtc_convert_umode(struct drm_display_mode *out,
1761 const struct drm_mode_modeinfo *in)
f453ba04 1762{
90367bf6
VS		 1763 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1764 return -ERANGE;
1765
5848ad40
DL		 1766 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1767 return -EINVAL;
1768
f453ba04
DA		 1769 out->clock = in->clock;
1770 out->hdisplay = in->hdisplay;
1771 out->hsync_start = in->hsync_start;
1772 out->hsync_end = in->hsync_end;
1773 out->htotal = in->htotal;
1774 out->hskew = in->hskew;
1775 out->vdisplay = in->vdisplay;
1776 out->vsync_start = in->vsync_start;
1777 out->vsync_end = in->vsync_end;
1778 out->vtotal = in->vtotal;
1779 out->vscan = in->vscan;
1780 out->vrefresh = in->vrefresh;
1781 out->flags = in->flags;
1782 out->type = in->type;
1783 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1784 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
90367bf6
VS		 1785
1786 return 0;
f453ba04
DA		 1787}
1788
1789/**
1790 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1791 * @dev: drm device for the ioctl
1792 * @data: data pointer for the ioctl
1793 * @file_priv: drm file for the ioctl call
f453ba04 1794 *
f453ba04
DA		 1795 * Construct a set of configuration description structures and return
1796 * them to the user, including CRTC, connector and framebuffer configuration.
1797 *
1798 * Called by the user via ioctl.
1799 *
c8e32cc1 1800 * Returns:
1a498633 1801 * Zero on success, negative errno on failure.
f453ba04
DA		 1802 */
1803int drm_mode_getresources(struct drm_device *dev, void *data,
1804 struct drm_file *file_priv)
1805{
1806 struct drm_mode_card_res *card_res = data;
1807 struct list_head *lh;
1808 struct drm_framebuffer *fb;
1809 struct drm_connector *connector;
1810 struct drm_crtc *crtc;
1811 struct drm_encoder *encoder;
1812 int ret = 0;
1813 int connector_count = 0;
1814 int crtc_count = 0;
1815 int fb_count = 0;
1816 int encoder_count = 0;
1817 int copied = 0, i;
1818 uint32_t __user *fb_id;
1819 uint32_t __user *crtc_id;
1820 uint32_t __user *connector_id;
1821 uint32_t __user *encoder_id;
1822 struct drm_mode_group *mode_group;
1823
fb3b06c8
DA		 1824 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1825 return -EINVAL;
1826
f453ba04 1827
4b096ac1 1828 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1829 /*
1830 * For the non-control nodes we need to limit the list of resources
1831 * by IDs in the group list for this node
1832 */
1833 list_for_each(lh, &file_priv->fbs)
1834 fb_count++;
1835
4b096ac1
DV		 1836 /* handle this in 4 parts */
1837 /* FBs */
1838 if (card_res->count_fbs >= fb_count) {
1839 copied = 0;
1840 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1841 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1842 if (put_user(fb->base.id, fb_id + copied)) {
1843 mutex_unlock(&file_priv->fbs_lock);
1844 return -EFAULT;
1845 }
1846 copied++;
1847 }
1848 }
1849 card_res->count_fbs = fb_count;
1850 mutex_unlock(&file_priv->fbs_lock);
1851
fcf93f69
DV		 1852 /* mode_config.mutex protects the connector list against e.g. DP MST
1853 * connector hot-adding. CRTC/Plane lists are invariant. */
1854 mutex_lock(&dev->mode_config.mutex);
43683057 1855 if (!drm_is_primary_client(file_priv)) {
f453ba04 1856
09f308f7 1857 mode_group = NULL;
f453ba04
DA		 1858 list_for_each(lh, &dev->mode_config.crtc_list)
1859 crtc_count++;
1860
1861 list_for_each(lh, &dev->mode_config.connector_list)
1862 connector_count++;
1863
1864 list_for_each(lh, &dev->mode_config.encoder_list)
1865 encoder_count++;
1866 } else {
1867
09f308f7 1868 mode_group = &file_priv->master->minor->mode_group;
f453ba04
DA		 1869 crtc_count = mode_group->num_crtcs;
1870 connector_count = mode_group->num_connectors;
1871 encoder_count = mode_group->num_encoders;
1872 }
1873
1874 card_res->max_height = dev->mode_config.max_height;
1875 card_res->min_height = dev->mode_config.min_height;
1876 card_res->max_width = dev->mode_config.max_width;
1877 card_res->min_width = dev->mode_config.min_width;
1878
f453ba04
DA		 1879 /* CRTCs */
1880 if (card_res->count_crtcs >= crtc_count) {
1881 copied = 0;
1882 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
09f308f7 1883 if (!mode_group) {
f453ba04
DA		 1884 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1885 head) {
9440106b 1886 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1887 if (put_user(crtc->base.id, crtc_id + copied)) {
1888 ret = -EFAULT;
1889 goto out;
1890 }
1891 copied++;
1892 }
1893 } else {
1894 for (i = 0; i < mode_group->num_crtcs; i++) {
1895 if (put_user(mode_group->id_list[i],
1896 crtc_id + copied)) {
1897 ret = -EFAULT;
1898 goto out;
1899 }
1900 copied++;
1901 }
1902 }
1903 }
1904 card_res->count_crtcs = crtc_count;
1905
1906 /* Encoders */
1907 if (card_res->count_encoders >= encoder_count) {
1908 copied = 0;
1909 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
09f308f7 1910 if (!mode_group) {
f453ba04
DA		 1911 list_for_each_entry(encoder,
1912 &dev->mode_config.encoder_list,
1913 head) {
9440106b 1914 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
83a8cfd3 1915 encoder->name);
f453ba04
DA		 1916 if (put_user(encoder->base.id, encoder_id +
1917 copied)) {
1918 ret = -EFAULT;
1919 goto out;
1920 }
1921 copied++;
1922 }
1923 } else {
1924 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1925 if (put_user(mode_group->id_list[i],
1926 encoder_id + copied)) {
1927 ret = -EFAULT;
1928 goto out;
1929 }
1930 copied++;
1931 }
1932
1933 }
1934 }
1935 card_res->count_encoders = encoder_count;
1936
1937 /* Connectors */
1938 if (card_res->count_connectors >= connector_count) {
1939 copied = 0;
1940 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
09f308f7 1941 if (!mode_group) {
f453ba04
DA		 1942 list_for_each_entry(connector,
1943 &dev->mode_config.connector_list,
1944 head) {
9440106b
JG		 1945 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1946 connector->base.id,
25933820 1947 connector->name);
f453ba04
DA		 1948 if (put_user(connector->base.id,
1949 connector_id + copied)) {
1950 ret = -EFAULT;
1951 goto out;
1952 }
1953 copied++;
1954 }
1955 } else {
1956 int start = mode_group->num_crtcs +
1957 mode_group->num_encoders;
1958 for (i = start; i < start + mode_group->num_connectors; i++) {
1959 if (put_user(mode_group->id_list[i],
1960 connector_id + copied)) {
1961 ret = -EFAULT;
1962 goto out;
1963 }
1964 copied++;
1965 }
1966 }
1967 }
1968 card_res->count_connectors = connector_count;
1969
9440106b 1970 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1971 card_res->count_connectors, card_res->count_encoders);
1972
1973out:
fcf93f69 1974 mutex_unlock(&dev->mode_config.mutex);
f453ba04
DA		 1975 return ret;
1976}
1977
1978/**
1979 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1980 * @dev: drm device for the ioctl
1981 * @data: data pointer for the ioctl
1982 * @file_priv: drm file for the ioctl call
f453ba04 1983 *
f453ba04
DA		 1984 * Construct a CRTC configuration structure to return to the user.
1985 *
1986 * Called by the user via ioctl.
1987 *
c8e32cc1 1988 * Returns:
1a498633 1989 * Zero on success, negative errno on failure.
f453ba04
DA		 1990 */
1991int drm_mode_getcrtc(struct drm_device *dev,
1992 void *data, struct drm_file *file_priv)
1993{
1994 struct drm_mode_crtc *crtc_resp = data;
1995 struct drm_crtc *crtc;
f453ba04 1996
fb3b06c8
DA		 1997 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1998 return -EINVAL;
1999
a2b34e22 2000 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
fcf93f69
DV		 2001 if (!crtc)
2002 return -ENOENT;
f453ba04 2003
fcf93f69 2004 drm_modeset_lock_crtc(crtc, crtc->primary);
f453ba04 2005 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 2006 if (crtc->primary->fb)
2007 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 2008 else
2009 crtc_resp->fb_id = 0;
2010
31c946e8
DV		 2011 if (crtc->state) {
2012 crtc_resp->x = crtc->primary->state->src_x >> 16;
2013 crtc_resp->y = crtc->primary->state->src_y >> 16;
2014 if (crtc->state->enable) {
2015 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
2016 crtc_resp->mode_valid = 1;
f453ba04 2017
31c946e8
DV		 2018 } else {
2019 crtc_resp->mode_valid = 0;
2020 }
f453ba04 2021 } else {
31c946e8
DV		 2022 crtc_resp->x = crtc->x;
2023 crtc_resp->y = crtc->y;
2024 if (crtc->enabled) {
2025 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2026 crtc_resp->mode_valid = 1;
2027
2028 } else {
2029 crtc_resp->mode_valid = 0;
2030 }
f453ba04 2031 }
fcf93f69 2032 drm_modeset_unlock_crtc(crtc);
f453ba04 2033
baf698b0 2034 return 0;
f453ba04
DA		 2035}
2036
61d8e328
DL		 2037static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2038 const struct drm_file *file_priv)
2039{
2040 /*
2041 * If user-space hasn't configured the driver to expose the stereo 3D
2042 * modes, don't expose them.
2043 */
2044 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2045 return false;
2046
2047 return true;
2048}
2049
abd69c55
DV		 2050static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2051{
2052 /* For atomic drivers only state objects are synchronously updated and
2053 * protected by modeset locks, so check those first. */
2054 if (connector->state)
2055 return connector->state->best_encoder;
2056 return connector->encoder;
2057}
2058
95cbf110 2059/* helper for getconnector and getproperties ioctls */
88a48e29 2060static int get_properties(struct drm_mode_object *obj, bool atomic,
95cbf110
RC		 2061 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2062 uint32_t *arg_count_props)
2063{
88a48e29
RC		 2064 int props_count;
2065 int i, ret, copied;
2066
2067 props_count = obj->properties->count;
2068 if (!atomic)
2069 props_count -= obj->properties->atomic_count;
95cbf110
RC		 2070
2071 if ((*arg_count_props >= props_count) && props_count) {
88a48e29 2072 for (i = 0, copied = 0; copied < props_count; i++) {
95cbf110
RC		 2073 struct drm_property *prop = obj->properties->properties[i];
2074 uint64_t val;
2075
88a48e29
RC		 2076 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2077 continue;
2078
95cbf110
RC		 2079 ret = drm_object_property_get_value(obj, prop, &val);
2080 if (ret)
2081 return ret;
2082
2083 if (put_user(prop->base.id, prop_ptr + copied))
2084 return -EFAULT;
2085
2086 if (put_user(val, prop_values + copied))
2087 return -EFAULT;
2088
2089 copied++;
2090 }
2091 }
2092 *arg_count_props = props_count;
2093
2094 return 0;
2095}
2096
f453ba04
DA		 2097/**
2098 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 2099 * @dev: drm device for the ioctl
2100 * @data: data pointer for the ioctl
2101 * @file_priv: drm file for the ioctl call
f453ba04 2102 *
f453ba04
DA		 2103 * Construct a connector configuration structure to return to the user.
2104 *
2105 * Called by the user via ioctl.
2106 *
c8e32cc1 2107 * Returns:
1a498633 2108 * Zero on success, negative errno on failure.
f453ba04
DA		 2109 */
2110int drm_mode_getconnector(struct drm_device *dev, void *data,
2111 struct drm_file *file_priv)
2112{
2113 struct drm_mode_get_connector *out_resp = data;
f453ba04 2114 struct drm_connector *connector;
abd69c55 2115 struct drm_encoder *encoder;
f453ba04
DA		 2116 struct drm_display_mode *mode;
2117 int mode_count = 0;
f453ba04
DA		 2118 int encoders_count = 0;
2119 int ret = 0;
2120 int copied = 0;
2121 int i;
2122 struct drm_mode_modeinfo u_mode;
2123 struct drm_mode_modeinfo __user *mode_ptr;
f453ba04
DA		 2124 uint32_t __user *encoder_ptr;
2125
fb3b06c8
DA		 2126 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2127 return -EINVAL;
2128
f453ba04
DA		 2129 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2130
9440106b 2131 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 2132
7b24056b 2133 mutex_lock(&dev->mode_config.mutex);
f453ba04 2134
a2b34e22
RC		 2135 connector = drm_connector_find(dev, out_resp->connector_id);
2136 if (!connector) {
f27657f2 2137 ret = -ENOENT;
f453ba04
DA		 2138 goto out;
2139 }
f453ba04 2140
01073b08
TR		 2141 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2142 if (connector->encoder_ids[i] != 0)
f453ba04 2143 encoders_count++;
f453ba04
DA		 2144
2145 if (out_resp->count_modes == 0) {
2146 connector->funcs->fill_modes(connector,
2147 dev->mode_config.max_width,
2148 dev->mode_config.max_height);
2149 }
2150
2151 /* delayed so we get modes regardless of pre-fill_modes state */
2152 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 2153 if (drm_mode_expose_to_userspace(mode, file_priv))
2154 mode_count++;
f453ba04
DA		 2155
2156 out_resp->connector_id = connector->base.id;
2157 out_resp->connector_type = connector->connector_type;
2158 out_resp->connector_type_id = connector->connector_type_id;
2159 out_resp->mm_width = connector->display_info.width_mm;
2160 out_resp->mm_height = connector->display_info.height_mm;
2161 out_resp->subpixel = connector->display_info.subpixel_order;
2162 out_resp->connection = connector->status;
2caa80e7
DV		 2163
2164 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2165 encoder = drm_connector_get_encoder(connector);
2166 if (encoder)
2167 out_resp->encoder_id = encoder->base.id;
f453ba04
DA		 2168 else
2169 out_resp->encoder_id = 0;
2170
2171 /*
2172 * This ioctl is called twice, once to determine how much space is
2173 * needed, and the 2nd time to fill it.
2174 */
2175 if ((out_resp->count_modes >= mode_count) && mode_count) {
2176 copied = 0;
81f6c7f8 2177 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 2178 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 2179 if (!drm_mode_expose_to_userspace(mode, file_priv))
2180 continue;
2181
f453ba04
DA		 2182 drm_crtc_convert_to_umode(&u_mode, mode);
2183 if (copy_to_user(mode_ptr + copied,
2184 &u_mode, sizeof(u_mode))) {
2185 ret = -EFAULT;
2186 goto out;
2187 }
2188 copied++;
2189 }
2190 }
2191 out_resp->count_modes = mode_count;
2192
88a48e29 2193 ret = get_properties(&connector->base, file_priv->atomic,
95cbf110
RC		 2194 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2195 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2196 &out_resp->count_props);
2197 if (ret)
2198 goto out;
f453ba04
DA		 2199
2200 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2201 copied = 0;
81f6c7f8 2202 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 2203 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2204 if (connector->encoder_ids[i] != 0) {
2205 if (put_user(connector->encoder_ids[i],
2206 encoder_ptr + copied)) {
2207 ret = -EFAULT;
2208 goto out;
2209 }
2210 copied++;
2211 }
2212 }
2213 }
2214 out_resp->count_encoders = encoders_count;
2215
2216out:
ccfc0865 2217 drm_modeset_unlock(&dev->mode_config.connection_mutex);
7b24056b
DV		 2218 mutex_unlock(&dev->mode_config.mutex);
2219
f453ba04
DA		 2220 return ret;
2221}
2222
abd69c55
DV		 2223static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2224{
2225 struct drm_connector *connector;
2226 struct drm_device *dev = encoder->dev;
2227 bool uses_atomic = false;
2228
2229 /* For atomic drivers only state objects are synchronously updated and
2230 * protected by modeset locks, so check those first. */
2231 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2232 if (!connector->state)
2233 continue;
2234
2235 uses_atomic = true;
2236
2237 if (connector->state->best_encoder != encoder)
2238 continue;
2239
2240 return connector->state->crtc;
2241 }
2242
2243 /* Don't return stale data (e.g. pending async disable). */
2244 if (uses_atomic)
2245 return NULL;
2246
2247 return encoder->crtc;
2248}
2249
c8e32cc1
DV		 2250/**
2251 * drm_mode_getencoder - get encoder configuration
2252 * @dev: drm device for the ioctl
2253 * @data: data pointer for the ioctl
2254 * @file_priv: drm file for the ioctl call
2255 *
2256 * Construct a encoder configuration structure to return to the user.
2257 *
2258 * Called by the user via ioctl.
2259 *
2260 * Returns:
1a498633 2261 * Zero on success, negative errno on failure.
c8e32cc1 2262 */
f453ba04
DA		 2263int drm_mode_getencoder(struct drm_device *dev, void *data,
2264 struct drm_file *file_priv)
2265{
2266 struct drm_mode_get_encoder *enc_resp = data;
f453ba04 2267 struct drm_encoder *encoder;
abd69c55 2268 struct drm_crtc *crtc;
f453ba04 2269
fb3b06c8
DA		 2270 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2271 return -EINVAL;
2272
a2b34e22 2273 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
fcf93f69
DV		 2274 if (!encoder)
2275 return -ENOENT;
f453ba04 2276
fcf93f69 2277 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2278 crtc = drm_encoder_get_crtc(encoder);
2279 if (crtc)
2280 enc_resp->crtc_id = crtc->base.id;
f453ba04
DA		 2281 else
2282 enc_resp->crtc_id = 0;
fcf93f69
DV		 2283 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2284
f453ba04
DA		 2285 enc_resp->encoder_type = encoder->encoder_type;
2286 enc_resp->encoder_id = encoder->base.id;
2287 enc_resp->possible_crtcs = encoder->possible_crtcs;
2288 enc_resp->possible_clones = encoder->possible_clones;
2289
baf698b0 2290 return 0;
f453ba04
DA		 2291}
2292
8cf5c917 2293/**
c8e32cc1 2294 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 2295 * @dev: DRM device
2296 * @data: ioctl data
2297 * @file_priv: DRM file info
2298 *
c8e32cc1
DV		 2299 * Construct a list of plane ids to return to the user.
2300 *
2301 * Called by the user via ioctl.
2302 *
2303 * Returns:
1a498633 2304 * Zero on success, negative errno on failure.
8cf5c917
JB		 2305 */
2306int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 2307 struct drm_file *file_priv)
8cf5c917
JB		 2308{
2309 struct drm_mode_get_plane_res *plane_resp = data;
2310 struct drm_mode_config *config;
2311 struct drm_plane *plane;
2312 uint32_t __user *plane_ptr;
fcf93f69 2313 int copied = 0;
681e7ec7 2314 unsigned num_planes;
8cf5c917
JB		 2315
2316 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2317 return -EINVAL;
2318
8cf5c917
JB		 2319 config = &dev->mode_config;
2320
681e7ec7
MR		 2321 if (file_priv->universal_planes)
2322 num_planes = config->num_total_plane;
2323 else
2324 num_planes = config->num_overlay_plane;
2325
8cf5c917
JB		 2326 /*
2327 * This ioctl is called twice, once to determine how much space is
2328 * needed, and the 2nd time to fill it.
2329 */
681e7ec7
MR		 2330 if (num_planes &&
2331 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 2332 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917 2333
fcf93f69 2334 /* Plane lists are invariant, no locking needed. */
8cf5c917 2335 list_for_each_entry(plane, &config->plane_list, head) {
681e7ec7
MR		 2336 /*
2337 * Unless userspace set the 'universal planes'
2338 * capability bit, only advertise overlays.
2339 */
2340 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2341 !file_priv->universal_planes)
e27dde3e
MR		 2342 continue;
2343
fcf93f69
DV		 2344 if (put_user(plane->base.id, plane_ptr + copied))
2345 return -EFAULT;
8cf5c917
JB		 2346 copied++;
2347 }
2348 }
681e7ec7 2349 plane_resp->count_planes = num_planes;
8cf5c917 2350
fcf93f69 2351 return 0;
8cf5c917
JB		 2352}
2353
2354/**
c8e32cc1 2355 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2356 * @dev: DRM device
2357 * @data: ioctl data
2358 * @file_priv: DRM file info
2359 *
c8e32cc1
DV		 2360 * Construct a plane configuration structure to return to the user.
2361 *
2362 * Called by the user via ioctl.
2363 *
2364 * Returns:
1a498633 2365 * Zero on success, negative errno on failure.
8cf5c917
JB		 2366 */
2367int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2368 struct drm_file *file_priv)
8cf5c917
JB		 2369{
2370 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2371 struct drm_plane *plane;
2372 uint32_t __user *format_ptr;
8cf5c917
JB		 2373
2374 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2375 return -EINVAL;
2376
a2b34e22 2377 plane = drm_plane_find(dev, plane_resp->plane_id);
fcf93f69
DV		 2378 if (!plane)
2379 return -ENOENT;
8cf5c917 2380
fcf93f69 2381 drm_modeset_lock(&plane->mutex, NULL);
8cf5c917
JB		 2382 if (plane->crtc)
2383 plane_resp->crtc_id = plane->crtc->base.id;
2384 else
2385 plane_resp->crtc_id = 0;
2386
2387 if (plane->fb)
2388 plane_resp->fb_id = plane->fb->base.id;
2389 else
2390 plane_resp->fb_id = 0;
fcf93f69 2391 drm_modeset_unlock(&plane->mutex);
8cf5c917
JB		 2392
2393 plane_resp->plane_id = plane->base.id;
2394 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2395 plane_resp->gamma_size = 0;
8cf5c917
JB		 2396
2397 /*
2398 * This ioctl is called twice, once to determine how much space is
2399 * needed, and the 2nd time to fill it.
2400 */
2401 if (plane->format_count &&
2402 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2403 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2404 if (copy_to_user(format_ptr,
2405 plane->format_types,
2406 sizeof(uint32_t) * plane->format_count)) {
fcf93f69 2407 return -EFAULT;
8cf5c917
JB		 2408 }
2409 }
2410 plane_resp->count_format_types = plane->format_count;
2411
baf698b0 2412 return 0;
8cf5c917
JB		 2413}
2414
ead8610d
LP		 2415/**
2416 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2417 * @plane: plane to check for format support
2418 * @format: the pixel format
2419 *
2420 * Returns:
2421 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2422 * otherwise.
2423 */
2424int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2425{
2426 unsigned int i;
2427
2428 for (i = 0; i < plane->format_count; i++) {
2429 if (format == plane->format_types[i])
2430 return 0;
2431 }
2432
2433 return -EINVAL;
2434}
2435
b36552b3
MR		 2436/*
2437 * setplane_internal - setplane handler for internal callers
8cf5c917 2438 *
b36552b3
MR		 2439 * Note that we assume an extra reference has already been taken on fb. If the
2440 * update fails, this reference will be dropped before return; if it succeeds,
2441 * the previous framebuffer (if any) will be unreferenced instead.
c8e32cc1 2442 *
b36552b3 2443 * src_{x,y,w,h} are provided in 16.16 fixed point format
8cf5c917 2444 */
f2b50c11
DV		 2445static int __setplane_internal(struct drm_plane *plane,
2446 struct drm_crtc *crtc,
2447 struct drm_framebuffer *fb,
2448 int32_t crtc_x, int32_t crtc_y,
2449 uint32_t crtc_w, uint32_t crtc_h,
2450 /* src_{x,y,w,h} values are 16.16 fixed point */
2451 uint32_t src_x, uint32_t src_y,
2452 uint32_t src_w, uint32_t src_h)
8cf5c917 2453{
8cf5c917 2454 int ret = 0;
42ef8789 2455 unsigned int fb_width, fb_height;
8cf5c917 2456
8cf5c917 2457 /* No fb means shut it down */
b36552b3 2458 if (!fb) {
3d30a59b 2459 plane->old_fb = plane->fb;
731cce48
DV		 2460 ret = plane->funcs->disable_plane(plane);
2461 if (!ret) {
2462 plane->crtc = NULL;
2463 plane->fb = NULL;
2464 } else {
3d30a59b 2465 plane->old_fb = NULL;
731cce48 2466 }
8cf5c917
JB		 2467 goto out;
2468 }
2469
7f994f3f
MR		 2470 /* Check whether this plane is usable on this CRTC */
2471 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2472 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2473 ret = -EINVAL;
2474 goto out;
2475 }
2476
62443be6 2477 /* Check whether this plane supports the fb pixel format. */
ead8610d
LP		 2478 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2479 if (ret) {
6ba6d03e
VS		 2480 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2481 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2482 goto out;
2483 }
2484
42ef8789
VS		 2485 fb_width = fb->width << 16;
2486 fb_height = fb->height << 16;
2487
2488 /* Make sure source coordinates are inside the fb. */
b36552b3
MR		 2489 if (src_w > fb_width ||
2490 src_x > fb_width - src_w ||
2491 src_h > fb_height ||
2492 src_y > fb_height - src_h) {
42ef8789
VS		 2493 DRM_DEBUG_KMS("Invalid source coordinates "
2494 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
b36552b3
MR		 2495 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2496 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2497 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2498 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
42ef8789
VS		 2499 ret = -ENOSPC;
2500 goto out;
2501 }
2502
3d30a59b 2503 plane->old_fb = plane->fb;
8cf5c917 2504 ret = plane->funcs->update_plane(plane, crtc, fb,
b36552b3
MR		 2505 crtc_x, crtc_y, crtc_w, crtc_h,
2506 src_x, src_y, src_w, src_h);
8cf5c917
JB		 2507 if (!ret) {
2508 plane->crtc = crtc;
2509 plane->fb = fb;
35f8badc 2510 fb = NULL;
0fe27f06 2511 } else {
3d30a59b 2512 plane->old_fb = NULL;
8cf5c917
JB		 2513 }
2514
2515out:
6c2a7532
DV		 2516 if (fb)
2517 drm_framebuffer_unreference(fb);
3d30a59b
DV		 2518 if (plane->old_fb)
2519 drm_framebuffer_unreference(plane->old_fb);
2520 plane->old_fb = NULL;
8cf5c917
JB		 2521
2522 return ret;
f2b50c11 2523}
b36552b3 2524
f2b50c11
DV		 2525static int setplane_internal(struct drm_plane *plane,
2526 struct drm_crtc *crtc,
2527 struct drm_framebuffer *fb,
2528 int32_t crtc_x, int32_t crtc_y,
2529 uint32_t crtc_w, uint32_t crtc_h,
2530 /* src_{x,y,w,h} values are 16.16 fixed point */
2531 uint32_t src_x, uint32_t src_y,
2532 uint32_t src_w, uint32_t src_h)
2533{
2534 int ret;
2535
2536 drm_modeset_lock_all(plane->dev);
2537 ret = __setplane_internal(plane, crtc, fb,
2538 crtc_x, crtc_y, crtc_w, crtc_h,
2539 src_x, src_y, src_w, src_h);
2540 drm_modeset_unlock_all(plane->dev);
2541
2542 return ret;
b36552b3
MR		 2543}
2544
2545/**
2546 * drm_mode_setplane - configure a plane's configuration
2547 * @dev: DRM device
2548 * @data: ioctl data*
2549 * @file_priv: DRM file info
2550 *
2551 * Set plane configuration, including placement, fb, scaling, and other factors.
2552 * Or pass a NULL fb to disable (planes may be disabled without providing a
2553 * valid crtc).
2554 *
2555 * Returns:
1a498633 2556 * Zero on success, negative errno on failure.
b36552b3
MR		 2557 */
2558int drm_mode_setplane(struct drm_device *dev, void *data,
2559 struct drm_file *file_priv)
2560{
2561 struct drm_mode_set_plane *plane_req = data;
b36552b3
MR		 2562 struct drm_plane *plane;
2563 struct drm_crtc *crtc = NULL;
2564 struct drm_framebuffer *fb = NULL;
2565
2566 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2567 return -EINVAL;
2568
2569 /* Give drivers some help against integer overflows */
2570 if (plane_req->crtc_w > INT_MAX ||
2571 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2572 plane_req->crtc_h > INT_MAX ||
2573 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2574 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2575 plane_req->crtc_w, plane_req->crtc_h,
2576 plane_req->crtc_x, plane_req->crtc_y);
2577 return -ERANGE;
2578 }
2579
2580 /*
2581 * First, find the plane, crtc, and fb objects. If not available,
2582 * we don't bother to call the driver.
2583 */
933f622f
RC		 2584 plane = drm_plane_find(dev, plane_req->plane_id);
2585 if (!plane) {
b36552b3
MR		 2586 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2587 plane_req->plane_id);
2588 return -ENOENT;
2589 }
b36552b3
MR		 2590
2591 if (plane_req->fb_id) {
2592 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2593 if (!fb) {
2594 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2595 plane_req->fb_id);
2596 return -ENOENT;
2597 }
2598
933f622f
RC		 2599 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2600 if (!crtc) {
b36552b3
MR		 2601 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2602 plane_req->crtc_id);
2603 return -ENOENT;
2604 }
b36552b3
MR		 2605 }
2606
161d0dc1
MR		 2607 /*
2608 * setplane_internal will take care of deref'ing either the old or new
2609 * framebuffer depending on success.
2610 */
17cfd91f 2611 return setplane_internal(plane, crtc, fb,
b36552b3
MR		 2612 plane_req->crtc_x, plane_req->crtc_y,
2613 plane_req->crtc_w, plane_req->crtc_h,
2614 plane_req->src_x, plane_req->src_y,
2615 plane_req->src_w, plane_req->src_h);
8cf5c917
JB		 2616}
2617
2d13b679
DV		 2618/**
2619 * drm_mode_set_config_internal - helper to call ->set_config
2620 * @set: modeset config to set
2621 *
2622 * This is a little helper to wrap internal calls to the ->set_config driver
2623 * interface. The only thing it adds is correct refcounting dance.
4dfd909f 2624 *
c8e32cc1 2625 * Returns:
1a498633 2626 * Zero on success, negative errno on failure.
2d13b679
DV		 2627 */
2628int drm_mode_set_config_internal(struct drm_mode_set *set)
2629{
2630 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2631 struct drm_framebuffer *fb;
2632 struct drm_crtc *tmp;
b0d12325
DV		 2633 int ret;
2634
5cef29aa
DV		 2635 /*
2636 * NOTE: ->set_config can also disable other crtcs (if we steal all
2637 * connectors from it), hence we need to refcount the fbs across all
2638 * crtcs. Atomic modeset will have saner semantics ...
2639 */
2640 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
3d30a59b 2641 tmp->primary->old_fb = tmp->primary->fb;
5cef29aa 2642
b0d12325 2643 fb = set->fb;
2d13b679 2644
b0d12325
DV		 2645 ret = crtc->funcs->set_config(set);
2646 if (ret == 0) {
e13161af 2647 crtc->primary->crtc = crtc;
0fe27f06 2648 crtc->primary->fb = fb;
5cef29aa 2649 }
cc85e121 2650
5cef29aa 2651 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
f4510a27
MR		 2652 if (tmp->primary->fb)
2653 drm_framebuffer_reference(tmp->primary->fb);
3d30a59b
DV		 2654 if (tmp->primary->old_fb)
2655 drm_framebuffer_unreference(tmp->primary->old_fb);
2656 tmp->primary->old_fb = NULL;
b0d12325
DV		 2657 }
2658
2659 return ret;
2d13b679
DV		 2660}
2661EXPORT_SYMBOL(drm_mode_set_config_internal);
2662
ecb7e16b
GP		 2663/**
2664 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2665 * @mode: mode to query
2666 * @hdisplay: hdisplay value to fill in
2667 * @vdisplay: vdisplay value to fill in
2668 *
2669 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2670 * the appropriate layout.
2671 */
2672void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2673 int *hdisplay, int *vdisplay)
2674{
2675 struct drm_display_mode adjusted;
2676
2677 drm_mode_copy(&adjusted, mode);
2678 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2679 *hdisplay = adjusted.crtc_hdisplay;
2680 *vdisplay = adjusted.crtc_vdisplay;
2681}
2682EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2683
af93629d
MR		 2684/**
2685 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2686 * CRTC viewport
2687 * @crtc: CRTC that framebuffer will be displayed on
2688 * @x: x panning
2689 * @y: y panning
2690 * @mode: mode that framebuffer will be displayed under
2691 * @fb: framebuffer to check size of
c11e9283 2692 */
af93629d
MR		 2693int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2694 int x, int y,
2695 const struct drm_display_mode *mode,
2696 const struct drm_framebuffer *fb)
c11e9283
DL		 2697
2698{
2699 int hdisplay, vdisplay;
2700
ecb7e16b 2701 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
a0c1bbb0 2702
c11e9283
DL		 2703 if (crtc->invert_dimensions)
2704 swap(hdisplay, vdisplay);
2705
2706 if (hdisplay > fb->width ||
2707 vdisplay > fb->height ||
2708 x > fb->width - hdisplay ||
2709 y > fb->height - vdisplay) {
2710 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2711 fb->width, fb->height, hdisplay, vdisplay, x, y,
2712 crtc->invert_dimensions ? " (inverted)" : "");
2713 return -ENOSPC;
2714 }
2715
2716 return 0;
2717}
af93629d 2718EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2719
f453ba04
DA		 2720/**
2721 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2722 * @dev: drm device for the ioctl
2723 * @data: data pointer for the ioctl
2724 * @file_priv: drm file for the ioctl call
f453ba04 2725 *
f453ba04
DA		 2726 * Build a new CRTC configuration based on user request.
2727 *
2728 * Called by the user via ioctl.
2729 *
c8e32cc1 2730 * Returns:
1a498633 2731 * Zero on success, negative errno on failure.
f453ba04
DA		 2732 */
2733int drm_mode_setcrtc(struct drm_device *dev, void *data,
2734 struct drm_file *file_priv)
2735{
2736 struct drm_mode_config *config = &dev->mode_config;
2737 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2738 struct drm_crtc *crtc;
f453ba04
DA		 2739 struct drm_connector **connector_set = NULL, *connector;
2740 struct drm_framebuffer *fb = NULL;
2741 struct drm_display_mode *mode = NULL;
2742 struct drm_mode_set set;
2743 uint32_t __user *set_connectors_ptr;
4a1b0714 2744 int ret;
f453ba04
DA		 2745 int i;
2746
fb3b06c8
DA		 2747 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2748 return -EINVAL;
2749
1d97e915
VS		 2750 /* For some reason crtc x/y offsets are signed internally. */
2751 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2752 return -ERANGE;
2753
84849903 2754 drm_modeset_lock_all(dev);
a2b34e22
RC		 2755 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2756 if (!crtc) {
58367ed6 2757 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2758 ret = -ENOENT;
f453ba04
DA		 2759 goto out;
2760 }
9440106b 2761 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 2762
2763 if (crtc_req->mode_valid) {
2764 /* If we have a mode we need a framebuffer. */
2765 /* If we pass -1, set the mode with the currently bound fb */
2766 if (crtc_req->fb_id == -1) {
f4510a27 2767 if (!crtc->primary->fb) {
6653cc8d
VS		 2768 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2769 ret = -EINVAL;
2770 goto out;
f453ba04 2771 }
f4510a27 2772 fb = crtc->primary->fb;
b0d12325
DV		 2773 /* Make refcounting symmetric with the lookup path. */
2774 drm_framebuffer_reference(fb);
f453ba04 2775 } else {
786b99ed
DV		 2776 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2777 if (!fb) {
58367ed6
ZY		 2778 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2779 crtc_req->fb_id);
37c4e705 2780 ret = -ENOENT;
f453ba04
DA		 2781 goto out;
2782 }
f453ba04
DA		 2783 }
2784
2785 mode = drm_mode_create(dev);
ee34ab5b
VS		 2786 if (!mode) {
2787 ret = -ENOMEM;
2788 goto out;
2789 }
2790
90367bf6
VS		 2791 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2792 if (ret) {
2793 DRM_DEBUG_KMS("Invalid mode\n");
2794 goto out;
2795 }
2796
23e1ce89
VS		 2797 mode->status = drm_mode_validate_basic(mode);
2798 if (mode->status != MODE_OK) {
2799 ret = -EINVAL;
2800 goto out;
2801 }
2802
f453ba04 2803 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2804
7eb5f302
LP		 2805 /*
2806 * Check whether the primary plane supports the fb pixel format.
2807 * Drivers not implementing the universal planes API use a
2808 * default formats list provided by the DRM core which doesn't
2809 * match real hardware capabilities. Skip the check in that
2810 * case.
2811 */
2812 if (!crtc->primary->format_default) {
2813 ret = drm_plane_check_pixel_format(crtc->primary,
2814 fb->pixel_format);
2815 if (ret) {
2816 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2817 drm_get_format_name(fb->pixel_format));
2818 goto out;
2819 }
2820 }
2821
c11e9283
DL		 2822 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2823 mode, fb);
2824 if (ret)
5f61bb42 2825 goto out;
c11e9283 2826
f453ba04
DA		 2827 }
2828
2829 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2830 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2831 ret = -EINVAL;
2832 goto out;
2833 }
2834
7781de74 2835 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2836 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2837 crtc_req->count_connectors);
2838 ret = -EINVAL;
2839 goto out;
2840 }
2841
2842 if (crtc_req->count_connectors > 0) {
2843 u32 out_id;
2844
2845 /* Avoid unbounded kernel memory allocation */
2846 if (crtc_req->count_connectors > config->num_connector) {
2847 ret = -EINVAL;
2848 goto out;
2849 }
2850
2f6c5389
TR		 2851 connector_set = kmalloc_array(crtc_req->count_connectors,
2852 sizeof(struct drm_connector *),
2853 GFP_KERNEL);
f453ba04
DA		 2854 if (!connector_set) {
2855 ret = -ENOMEM;
2856 goto out;
2857 }
2858
2859 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2860 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2861 if (get_user(out_id, &set_connectors_ptr[i])) {
2862 ret = -EFAULT;
2863 goto out;
2864 }
2865
a2b34e22
RC		 2866 connector = drm_connector_find(dev, out_id);
2867 if (!connector) {
58367ed6
ZY		 2868 DRM_DEBUG_KMS("Connector id %d unknown\n",
2869 out_id);
f27657f2 2870 ret = -ENOENT;
f453ba04
DA		 2871 goto out;
2872 }
9440106b
JG		 2873 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2874 connector->base.id,
25933820 2875 connector->name);
f453ba04
DA		 2876
2877 connector_set[i] = connector;
2878 }
2879 }
2880
2881 set.crtc = crtc;
2882 set.x = crtc_req->x;
2883 set.y = crtc_req->y;
2884 set.mode = mode;
2885 set.connectors = connector_set;
2886 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2887 set.fb = fb;
2d13b679 2888 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2889
2890out:
b0d12325
DV		 2891 if (fb)
2892 drm_framebuffer_unreference(fb);
2893
f453ba04 2894 kfree(connector_set);
ee34ab5b 2895 drm_mode_destroy(dev, mode);
84849903 2896 drm_modeset_unlock_all(dev);
f453ba04
DA		 2897 return ret;
2898}
2899
161d0dc1
MR		 2900/**
2901 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2902 * universal plane handler call
2903 * @crtc: crtc to update cursor for
2904 * @req: data pointer for the ioctl
2905 * @file_priv: drm file for the ioctl call
2906 *
2907 * Legacy cursor ioctl's work directly with driver buffer handles. To
2908 * translate legacy ioctl calls into universal plane handler calls, we need to
2909 * wrap the native buffer handle in a drm_framebuffer.
2910 *
2911 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2912 * buffer with a pitch of 4*width; the universal plane interface should be used
2913 * directly in cases where the hardware can support other buffer settings and
2914 * userspace wants to make use of these capabilities.
2915 *
2916 * Returns:
1a498633 2917 * Zero on success, negative errno on failure.
161d0dc1
MR		 2918 */
2919static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2920 struct drm_mode_cursor2 *req,
2921 struct drm_file *file_priv)
2922{
2923 struct drm_device *dev = crtc->dev;
2924 struct drm_framebuffer *fb = NULL;
2925 struct drm_mode_fb_cmd2 fbreq = {
2926 .width = req->width,
2927 .height = req->height,
2928 .pixel_format = DRM_FORMAT_ARGB8888,
2929 .pitches = { req->width * 4 },
2930 .handles = { req->handle },
2931 };
2932 int32_t crtc_x, crtc_y;
2933 uint32_t crtc_w = 0, crtc_h = 0;
2934 uint32_t src_w = 0, src_h = 0;
2935 int ret = 0;
2936
2937 BUG_ON(!crtc->cursor);
f2b50c11 2938 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
161d0dc1
MR		 2939
2940 /*
2941 * Obtain fb we'll be using (either new or existing) and take an extra
2942 * reference to it if fb != null. setplane will take care of dropping
2943 * the reference if the plane update fails.
2944 */
2945 if (req->flags & DRM_MODE_CURSOR_BO) {
2946 if (req->handle) {
9a6f5130 2947 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
161d0dc1
MR		 2948 if (IS_ERR(fb)) {
2949 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2950 return PTR_ERR(fb);
2951 }
161d0dc1
MR		 2952 } else {
2953 fb = NULL;
2954 }
2955 } else {
161d0dc1
MR		 2956 fb = crtc->cursor->fb;
2957 if (fb)
2958 drm_framebuffer_reference(fb);
161d0dc1
MR		 2959 }
2960
2961 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2962 crtc_x = req->x;
2963 crtc_y = req->y;
2964 } else {
2965 crtc_x = crtc->cursor_x;
2966 crtc_y = crtc->cursor_y;
2967 }
2968
2969 if (fb) {
2970 crtc_w = fb->width;
2971 crtc_h = fb->height;
2972 src_w = fb->width << 16;
2973 src_h = fb->height << 16;
2974 }
2975
2976 /*
2977 * setplane_internal will take care of deref'ing either the old or new
2978 * framebuffer depending on success.
2979 */
f2b50c11 2980 ret = __setplane_internal(crtc->cursor, crtc, fb,
161d0dc1
MR		 2981 crtc_x, crtc_y, crtc_w, crtc_h,
2982 0, 0, src_w, src_h);
2983
2984 /* Update successful; save new cursor position, if necessary */
2985 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2986 crtc->cursor_x = req->x;
2987 crtc->cursor_y = req->y;
2988 }
2989
2990 return ret;
2991}
2992
4c813d4d
DA		 2993static int drm_mode_cursor_common(struct drm_device *dev,
2994 struct drm_mode_cursor2 *req,
2995 struct drm_file *file_priv)
f453ba04 2996{
f453ba04
DA		 2997 struct drm_crtc *crtc;
2998 int ret = 0;
2999
fb3b06c8
DA		 3000 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3001 return -EINVAL;
3002
7c4eaca4 3003 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 3004 return -EINVAL;
f453ba04 3005
a2b34e22
RC		 3006 crtc = drm_crtc_find(dev, req->crtc_id);
3007 if (!crtc) {
58367ed6 3008 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 3009 return -ENOENT;
f453ba04 3010 }
f453ba04 3011
161d0dc1
MR		 3012 /*
3013 * If this crtc has a universal cursor plane, call that plane's update
3014 * handler rather than using legacy cursor handlers.
3015 */
4d02e2de 3016 drm_modeset_lock_crtc(crtc, crtc->cursor);
f2b50c11
DV		 3017 if (crtc->cursor) {
3018 ret = drm_mode_cursor_universal(crtc, req, file_priv);
3019 goto out;
3020 }
3021
f453ba04 3022 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 3023 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 3024 ret = -ENXIO;
3025 goto out;
3026 }
3027 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 3028 if (crtc->funcs->cursor_set2)
3029 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
3030 req->width, req->height, req->hot_x, req->hot_y);
3031 else
3032 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
3033 req->width, req->height);
f453ba04
DA		 3034 }
3035
3036 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3037 if (crtc->funcs->cursor_move) {
3038 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3039 } else {
f453ba04
DA		 3040 ret = -EFAULT;
3041 goto out;
3042 }
3043 }
3044out:
d059f652 3045 drm_modeset_unlock_crtc(crtc);
dac35663 3046
f453ba04 3047 return ret;
4c813d4d
DA		 3048
3049}
c8e32cc1
DV		 3050
3051
3052/**
3053 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3054 * @dev: drm device for the ioctl
3055 * @data: data pointer for the ioctl
3056 * @file_priv: drm file for the ioctl call
3057 *
3058 * Set the cursor configuration based on user request.
3059 *
3060 * Called by the user via ioctl.
3061 *
3062 * Returns:
1a498633 3063 * Zero on success, negative errno on failure.
c8e32cc1 3064 */
4c813d4d 3065int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 3066 void *data, struct drm_file *file_priv)
4c813d4d
DA		 3067{
3068 struct drm_mode_cursor *req = data;
3069 struct drm_mode_cursor2 new_req;
3070
3071 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3072 new_req.hot_x = new_req.hot_y = 0;
3073
3074 return drm_mode_cursor_common(dev, &new_req, file_priv);
3075}
3076
c8e32cc1
DV		 3077/**
3078 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3079 * @dev: drm device for the ioctl
3080 * @data: data pointer for the ioctl
3081 * @file_priv: drm file for the ioctl call
3082 *
3083 * Set the cursor configuration based on user request. This implements the 2nd
3084 * version of the cursor ioctl, which allows userspace to additionally specify
3085 * the hotspot of the pointer.
3086 *
3087 * Called by the user via ioctl.
3088 *
3089 * Returns:
1a498633 3090 * Zero on success, negative errno on failure.
c8e32cc1 3091 */
4c813d4d
DA		 3092int drm_mode_cursor2_ioctl(struct drm_device *dev,
3093 void *data, struct drm_file *file_priv)
3094{
3095 struct drm_mode_cursor2 *req = data;
4dfd909f 3096
4c813d4d 3097 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 3098}
3099
c8e32cc1
DV		 3100/**
3101 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3102 * @bpp: bits per pixels
3103 * @depth: bit depth per pixel
3104 *
3105 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3106 * Useful in fbdev emulation code, since that deals in those values.
3107 */
308e5bcb
JB		 3108uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3109{
3110 uint32_t fmt;
3111
3112 switch (bpp) {
3113 case 8:
d84f031b 3114 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 3115 break;
3116 case 16:
3117 if (depth == 15)
04b3924d 3118 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 3119 else
04b3924d 3120 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 3121 break;
3122 case 24:
04b3924d 3123 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 3124 break;
3125 case 32:
3126 if (depth == 24)
04b3924d 3127 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 3128 else if (depth == 30)
04b3924d 3129 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 3130 else
04b3924d 3131 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 3132 break;
3133 default:
04b3924d
VS		 3134 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3135 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 3136 break;
3137 }
3138
3139 return fmt;
3140}
3141EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3142
f453ba04
DA		 3143/**
3144 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 3145 * @dev: drm device for the ioctl
3146 * @data: data pointer for the ioctl
3147 * @file_priv: drm file for the ioctl call
f453ba04 3148 *
c8e32cc1 3149 * Add a new FB to the specified CRTC, given a user request. This is the
209f5527 3150 * original addfb ioctl which only supported RGB formats.
f453ba04
DA		 3151 *
3152 * Called by the user via ioctl.
3153 *
c8e32cc1 3154 * Returns:
1a498633 3155 * Zero on success, negative errno on failure.
f453ba04
DA		 3156 */
3157int drm_mode_addfb(struct drm_device *dev,
3158 void *data, struct drm_file *file_priv)
3159{
308e5bcb
JB		 3160 struct drm_mode_fb_cmd *or = data;
3161 struct drm_mode_fb_cmd2 r = {};
228f2cb3 3162 int ret;
308e5bcb 3163
228f2cb3 3164 /* convert to new format and call new ioctl */
308e5bcb
JB		 3165 r.fb_id = or->fb_id;
3166 r.width = or->width;
3167 r.height = or->height;
3168 r.pitches[0] = or->pitch;
3169 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3170 r.handles[0] = or->handle;
3171
228f2cb3
CE		 3172 ret = drm_mode_addfb2(dev, &r, file_priv);
3173 if (ret)
3174 return ret;
308e5bcb 3175
228f2cb3 3176 or->fb_id = r.fb_id;
4b096ac1 3177
baf698b0 3178 return 0;
308e5bcb
JB		 3179}
3180
cff91b62 3181static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 3182{
3183 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3184
3185 switch (format) {
3186 case DRM_FORMAT_C8:
3187 case DRM_FORMAT_RGB332:
3188 case DRM_FORMAT_BGR233:
3189 case DRM_FORMAT_XRGB4444:
3190 case DRM_FORMAT_XBGR4444:
3191 case DRM_FORMAT_RGBX4444:
3192 case DRM_FORMAT_BGRX4444:
3193 case DRM_FORMAT_ARGB4444:
3194 case DRM_FORMAT_ABGR4444:
3195 case DRM_FORMAT_RGBA4444:
3196 case DRM_FORMAT_BGRA4444:
3197 case DRM_FORMAT_XRGB1555:
3198 case DRM_FORMAT_XBGR1555:
3199 case DRM_FORMAT_RGBX5551:
3200 case DRM_FORMAT_BGRX5551:
3201 case DRM_FORMAT_ARGB1555:
3202 case DRM_FORMAT_ABGR1555:
3203 case DRM_FORMAT_RGBA5551:
3204 case DRM_FORMAT_BGRA5551:
3205 case DRM_FORMAT_RGB565:
3206 case DRM_FORMAT_BGR565:
3207 case DRM_FORMAT_RGB888:
3208 case DRM_FORMAT_BGR888:
3209 case DRM_FORMAT_XRGB8888:
3210 case DRM_FORMAT_XBGR8888:
3211 case DRM_FORMAT_RGBX8888:
3212 case DRM_FORMAT_BGRX8888:
3213 case DRM_FORMAT_ARGB8888:
3214 case DRM_FORMAT_ABGR8888:
3215 case DRM_FORMAT_RGBA8888:
3216 case DRM_FORMAT_BGRA8888:
3217 case DRM_FORMAT_XRGB2101010:
3218 case DRM_FORMAT_XBGR2101010:
3219 case DRM_FORMAT_RGBX1010102:
3220 case DRM_FORMAT_BGRX1010102:
3221 case DRM_FORMAT_ARGB2101010:
3222 case DRM_FORMAT_ABGR2101010:
3223 case DRM_FORMAT_RGBA1010102:
3224 case DRM_FORMAT_BGRA1010102:
3225 case DRM_FORMAT_YUYV:
3226 case DRM_FORMAT_YVYU:
3227 case DRM_FORMAT_UYVY:
3228 case DRM_FORMAT_VYUY:
3229 case DRM_FORMAT_AYUV:
3230 case DRM_FORMAT_NV12:
3231 case DRM_FORMAT_NV21:
3232 case DRM_FORMAT_NV16:
3233 case DRM_FORMAT_NV61:
ba623f6a
LP		 3234 case DRM_FORMAT_NV24:
3235 case DRM_FORMAT_NV42:
935b5977
VS		 3236 case DRM_FORMAT_YUV410:
3237 case DRM_FORMAT_YVU410:
3238 case DRM_FORMAT_YUV411:
3239 case DRM_FORMAT_YVU411:
3240 case DRM_FORMAT_YUV420:
3241 case DRM_FORMAT_YVU420:
3242 case DRM_FORMAT_YUV422:
3243 case DRM_FORMAT_YVU422:
3244 case DRM_FORMAT_YUV444:
3245 case DRM_FORMAT_YVU444:
3246 return 0;
3247 default:
23c453a4
VS		 3248 DRM_DEBUG_KMS("invalid pixel format %s\n",
3249 drm_get_format_name(r->pixel_format));
935b5977
VS		 3250 return -EINVAL;
3251 }
3252}
3253
cff91b62 3254static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 3255{
3256 int ret, hsub, vsub, num_planes, i;
3257
3258 ret = format_check(r);
3259 if (ret) {
6ba6d03e
VS		 3260 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3261 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 3262 return ret;
3263 }
3264
3265 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3266 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3267 num_planes = drm_format_num_planes(r->pixel_format);
3268
3269 if (r->width == 0 || r->width % hsub) {
209f5527 3270 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
d1b45d5f
VS		 3271 return -EINVAL;
3272 }
3273
3274 if (r->height == 0 || r->height % vsub) {
1aa1b11c 3275 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 3276 return -EINVAL;
3277 }
3278
3279 for (i = 0; i < num_planes; i++) {
3280 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 3281 unsigned int height = r->height / (i != 0 ? vsub : 1);
3282 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 3283
3284 if (!r->handles[i]) {
1aa1b11c 3285 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 3286 return -EINVAL;
3287 }
3288
b180b5d1
VS		 3289 if ((uint64_t) width * cpp > UINT_MAX)
3290 return -ERANGE;
3291
3292 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3293 return -ERANGE;
3294
3295 if (r->pitches[i] < width * cpp) {
1aa1b11c 3296 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 3297 return -EINVAL;
3298 }
e3eb3250
RC		 3299
3300 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3301 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3302 r->modifier[i], i);
3303 return -EINVAL;
3304 }
d1b45d5f
VS		 3305 }
3306
3307 return 0;
3308}
3309
9a6f5130
CW		 3310static struct drm_framebuffer *
3311internal_framebuffer_create(struct drm_device *dev,
3312 struct drm_mode_fb_cmd2 *r,
3313 struct drm_file *file_priv)
308e5bcb 3314{
f453ba04
DA		 3315 struct drm_mode_config *config = &dev->mode_config;
3316 struct drm_framebuffer *fb;
4a1b0714 3317 int ret;
f453ba04 3318
e3eb3250 3319 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
e3cc3520 3320 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
c394c2b0 3321 return ERR_PTR(-EINVAL);
e3cc3520
VS		 3322 }
3323
f453ba04 3324 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 3325 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 3326 r->width, config->min_width, config->max_width);
c394c2b0 3327 return ERR_PTR(-EINVAL);
f453ba04
DA		 3328 }
3329 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 3330 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 3331 r->height, config->min_height, config->max_height);
c394c2b0 3332 return ERR_PTR(-EINVAL);
f453ba04
DA		 3333 }
3334
e3eb3250
RC		 3335 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3336 !dev->mode_config.allow_fb_modifiers) {
3337 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3338 return ERR_PTR(-EINVAL);
3339 }
3340
d1b45d5f
VS		 3341 ret = framebuffer_check(r);
3342 if (ret)
c394c2b0 3343 return ERR_PTR(ret);
935b5977 3344
f453ba04 3345 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 3346 if (IS_ERR(fb)) {
1aa1b11c 3347 DRM_DEBUG_KMS("could not create framebuffer\n");
c394c2b0 3348 return fb;
f453ba04
DA		 3349 }
3350
c394c2b0
MR		 3351 return fb;
3352}
4b096ac1 3353
c394c2b0
MR		 3354/**
3355 * drm_mode_addfb2 - add an FB to the graphics configuration
3356 * @dev: drm device for the ioctl
3357 * @data: data pointer for the ioctl
3358 * @file_priv: drm file for the ioctl call
3359 *
3360 * Add a new FB to the specified CRTC, given a user request with format. This is
3361 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3362 * and uses fourcc codes as pixel format specifiers.
3363 *
3364 * Called by the user via ioctl.
3365 *
3366 * Returns:
1a498633 3367 * Zero on success, negative errno on failure.
c394c2b0
MR		 3368 */
3369int drm_mode_addfb2(struct drm_device *dev,
3370 void *data, struct drm_file *file_priv)
3371{
9a6f5130 3372 struct drm_mode_fb_cmd2 *r = data;
c394c2b0
MR		 3373 struct drm_framebuffer *fb;
3374
3375 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3376 return -EINVAL;
3377
9a6f5130 3378 fb = internal_framebuffer_create(dev, r, file_priv);
c394c2b0
MR		 3379 if (IS_ERR(fb))
3380 return PTR_ERR(fb);
3381
9a6f5130
CW		 3382 /* Transfer ownership to the filp for reaping on close */
3383
3384 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3385 mutex_lock(&file_priv->fbs_lock);
3386 r->fb_id = fb->base.id;
3387 list_add(&fb->filp_head, &file_priv->fbs);
3388 mutex_unlock(&file_priv->fbs_lock);
3389
c394c2b0 3390 return 0;
f453ba04
DA		 3391}
3392
3393/**
3394 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 3395 * @dev: drm device for the ioctl
3396 * @data: data pointer for the ioctl
3397 * @file_priv: drm file for the ioctl call
f453ba04 3398 *
f453ba04
DA		 3399 * Remove the FB specified by the user.
3400 *
3401 * Called by the user via ioctl.
3402 *
c8e32cc1 3403 * Returns:
1a498633 3404 * Zero on success, negative errno on failure.
f453ba04
DA		 3405 */
3406int drm_mode_rmfb(struct drm_device *dev,
3407 void *data, struct drm_file *file_priv)
3408{
f453ba04
DA		 3409 struct drm_framebuffer *fb = NULL;
3410 struct drm_framebuffer *fbl = NULL;
3411 uint32_t *id = data;
f453ba04
DA		 3412 int found = 0;
3413
fb3b06c8
DA		 3414 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3415 return -EINVAL;
3416
4b096ac1 3417 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 3418 mutex_lock(&dev->mode_config.fb_lock);
3419 fb = __drm_framebuffer_lookup(dev, *id);
3420 if (!fb)
3421 goto fail_lookup;
3422
f453ba04
DA		 3423 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3424 if (fb == fbl)
3425 found = 1;
2b677e8c
DV		 3426 if (!found)
3427 goto fail_lookup;
3428
3429 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3430 __drm_framebuffer_unregister(dev, fb);
f453ba04 3431
4b096ac1 3432 list_del_init(&fb->filp_head);
2b677e8c 3433 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 3434 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3435
4b096ac1 3436 drm_framebuffer_remove(fb);
4b096ac1 3437
2b677e8c
DV		 3438 return 0;
3439
3440fail_lookup:
3441 mutex_unlock(&dev->mode_config.fb_lock);
3442 mutex_unlock(&file_priv->fbs_lock);
3443
37c4e705 3444 return -ENOENT;
f453ba04
DA		 3445}
3446
3447/**
3448 * drm_mode_getfb - get FB info
065a50ed
DV		 3449 * @dev: drm device for the ioctl
3450 * @data: data pointer for the ioctl
3451 * @file_priv: drm file for the ioctl call
f453ba04 3452 *
f453ba04
DA		 3453 * Lookup the FB given its ID and return info about it.
3454 *
3455 * Called by the user via ioctl.
3456 *
c8e32cc1 3457 * Returns:
1a498633 3458 * Zero on success, negative errno on failure.
f453ba04
DA		 3459 */
3460int drm_mode_getfb(struct drm_device *dev,
3461 void *data, struct drm_file *file_priv)
3462{
3463 struct drm_mode_fb_cmd *r = data;
f453ba04 3464 struct drm_framebuffer *fb;
58c0dca1 3465 int ret;
f453ba04 3466
fb3b06c8
DA		 3467 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3468 return -EINVAL;
3469
786b99ed 3470 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 3471 if (!fb)
37c4e705 3472 return -ENOENT;
f453ba04
DA		 3473
3474 r->height = fb->height;
3475 r->width = fb->width;
3476 r->depth = fb->depth;
3477 r->bpp = fb->bits_per_pixel;
01f2c773 3478 r->pitch = fb->pitches[0];
101b96f3 3479 if (fb->funcs->create_handle) {
09f308f7 3480 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 3481 drm_is_control_client(file_priv)) {
101b96f3
DH		 3482 ret = fb->funcs->create_handle(fb, file_priv,
3483 &r->handle);
3484 } else {
3485 /* GET_FB() is an unprivileged ioctl so we must not
3486 * return a buffer-handle to non-master processes! For
3487 * backwards-compatibility reasons, we cannot make
3488 * GET_FB() privileged, so just return an invalid handle
3489 * for non-masters. */
3490 r->handle = 0;
3491 ret = 0;
3492 }
3493 } else {
af26ef3b 3494 ret = -ENODEV;
101b96f3 3495 }
f453ba04 3496
58c0dca1
DV		 3497 drm_framebuffer_unreference(fb);
3498
f453ba04
DA		 3499 return ret;
3500}
3501
c8e32cc1
DV		 3502/**
3503 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3504 * @dev: drm device for the ioctl
3505 * @data: data pointer for the ioctl
3506 * @file_priv: drm file for the ioctl call
3507 *
3508 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3509 * rectangle list. Generic userspace which does frontbuffer rendering must call
3510 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3511 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3512 *
3513 * Modesetting drivers which always update the frontbuffer do not need to
3514 * implement the corresponding ->dirty framebuffer callback.
3515 *
3516 * Called by the user via ioctl.
3517 *
3518 * Returns:
1a498633 3519 * Zero on success, negative errno on failure.
c8e32cc1 3520 */
884840aa
JB		 3521int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3522 void *data, struct drm_file *file_priv)
3523{
3524 struct drm_clip_rect __user *clips_ptr;
3525 struct drm_clip_rect *clips = NULL;
3526 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 3527 struct drm_framebuffer *fb;
3528 unsigned flags;
3529 int num_clips;
4a1b0714 3530 int ret;
884840aa 3531
fb3b06c8
DA		 3532 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3533 return -EINVAL;
3534
786b99ed 3535 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 3536 if (!fb)
37c4e705 3537 return -ENOENT;
884840aa
JB		 3538
3539 num_clips = r->num_clips;
81f6c7f8 3540 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 3541
3542 if (!num_clips != !clips_ptr) {
3543 ret = -EINVAL;
3544 goto out_err1;
3545 }
3546
3547 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3548
3549 /* If userspace annotates copy, clips must come in pairs */
3550 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3551 ret = -EINVAL;
3552 goto out_err1;
3553 }
3554
3555 if (num_clips && clips_ptr) {
a5cd3351
XW		 3556 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3557 ret = -EINVAL;
3558 goto out_err1;
3559 }
bd3f0ff9 3560 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
884840aa
JB		 3561 if (!clips) {
3562 ret = -ENOMEM;
3563 goto out_err1;
3564 }
3565
3566 ret = copy_from_user(clips, clips_ptr,
3567 num_clips * sizeof(*clips));
e902a358
DC		 3568 if (ret) {
3569 ret = -EFAULT;
884840aa 3570 goto out_err2;
e902a358 3571 }
884840aa
JB		 3572 }
3573
3574 if (fb->funcs->dirty) {
02b00162
TH		 3575 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3576 clips, num_clips);
884840aa
JB		 3577 } else {
3578 ret = -ENOSYS;
884840aa
JB		 3579 }
3580
3581out_err2:
3582 kfree(clips);
3583out_err1:
4ccf097f
DV		 3584 drm_framebuffer_unreference(fb);
3585
884840aa
JB		 3586 return ret;
3587}
3588
3589
f453ba04
DA		 3590/**
3591 * drm_fb_release - remove and free the FBs on this file
065a50ed 3592 * @priv: drm file for the ioctl
f453ba04 3593 *
f453ba04
DA		 3594 * Destroy all the FBs associated with @filp.
3595 *
3596 * Called by the user via ioctl.
3597 *
c8e32cc1 3598 * Returns:
1a498633 3599 * Zero on success, negative errno on failure.
f453ba04 3600 */
ea39f835 3601void drm_fb_release(struct drm_file *priv)
f453ba04 3602{
f453ba04
DA		 3603 struct drm_device *dev = priv->minor->dev;
3604 struct drm_framebuffer *fb, *tfb;
3605
1b116297
DV		 3606 /*
3607 * When the file gets released that means no one else can access the fb
e2db726b 3608 * list any more, so no need to grab fpriv->fbs_lock. And we need to
1b116297
DV		 3609 * avoid upsetting lockdep since the universal cursor code adds a
3610 * framebuffer while holding mutex locks.
3611 *
3612 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3613 * locks is impossible here since no one else but this function can get
3614 * at it any more.
3615 */
f453ba04 3616 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2b677e8c
DV		 3617
3618 mutex_lock(&dev->mode_config.fb_lock);
3619 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3620 __drm_framebuffer_unregister(dev, fb);
3621 mutex_unlock(&dev->mode_config.fb_lock);
3622
4b096ac1 3623 list_del_init(&fb->filp_head);
2b677e8c
DV		 3624
3625 /* This will also drop the fpriv->fbs reference. */
f7eff60e 3626 drm_framebuffer_remove(fb);
f453ba04 3627 }
f453ba04
DA		 3628}
3629
c8e32cc1
DV		 3630/**
3631 * drm_property_create - create a new property type
3632 * @dev: drm device
3633 * @flags: flags specifying the property type
3634 * @name: name of the property
3635 * @num_values: number of pre-defined values
3636 *
3637 * This creates a new generic drm property which can then be attached to a drm
3638 * object with drm_object_attach_property. The returned property object must be
3639 * freed with drm_property_destroy.
3640 *
3b5b9932
DL		 3641 * Note that the DRM core keeps a per-device list of properties and that, if
3642 * drm_mode_config_cleanup() is called, it will destroy all properties created
3643 * by the driver.
3644 *
c8e32cc1
DV		 3645 * Returns:
3646 * A pointer to the newly created property on success, NULL on failure.
3647 */
f453ba04
DA		 3648struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3649 const char *name, int num_values)
3650{
3651 struct drm_property *property = NULL;
6bfc56aa 3652 int ret;
f453ba04
DA		 3653
3654 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3655 if (!property)
3656 return NULL;
3657
98f75de4
RC		 3658 property->dev = dev;
3659
f453ba04 3660 if (num_values) {
bd3f0ff9
TR		 3661 property->values = kcalloc(num_values, sizeof(uint64_t),
3662 GFP_KERNEL);
f453ba04
DA		 3663 if (!property->values)
3664 goto fail;
3665 }
3666
6bfc56aa
VS		 3667 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3668 if (ret)
3669 goto fail;
3670
f453ba04
DA		 3671 property->flags = flags;
3672 property->num_values = num_values;
3758b341 3673 INIT_LIST_HEAD(&property->enum_list);
f453ba04 3674
471dd2ef 3675 if (name) {
f453ba04 3676 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3677 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3678 }
f453ba04
DA		 3679
3680 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3681
3682 WARN_ON(!drm_property_type_valid(property));
3683
f453ba04
DA		 3684 return property;
3685fail:
6bfc56aa 3686 kfree(property->values);
f453ba04
DA		 3687 kfree(property);
3688 return NULL;
3689}
3690EXPORT_SYMBOL(drm_property_create);
3691
c8e32cc1 3692/**
2aa9d2bc 3693 * drm_property_create_enum - create a new enumeration property type
c8e32cc1
DV		 3694 * @dev: drm device
3695 * @flags: flags specifying the property type
3696 * @name: name of the property
3697 * @props: enumeration lists with property values
3698 * @num_values: number of pre-defined values
3699 *
3700 * This creates a new generic drm property which can then be attached to a drm
3701 * object with drm_object_attach_property. The returned property object must be
3702 * freed with drm_property_destroy.
3703 *
3704 * Userspace is only allowed to set one of the predefined values for enumeration
3705 * properties.
3706 *
3707 * Returns:
3708 * A pointer to the newly created property on success, NULL on failure.
3709 */
4a67d391
SH		 3710struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3711 const char *name,
3712 const struct drm_prop_enum_list *props,
3713 int num_values)
3714{
3715 struct drm_property *property;
3716 int i, ret;
3717
3718 flags |= DRM_MODE_PROP_ENUM;
3719
3720 property = drm_property_create(dev, flags, name, num_values);
3721 if (!property)
3722 return NULL;
3723
3724 for (i = 0; i < num_values; i++) {
3725 ret = drm_property_add_enum(property, i,
3726 props[i].type,
3727 props[i].name);
3728 if (ret) {
3729 drm_property_destroy(dev, property);
3730 return NULL;
3731 }
3732 }
3733
3734 return property;
3735}
3736EXPORT_SYMBOL(drm_property_create_enum);
3737
c8e32cc1 3738/**
2aa9d2bc 3739 * drm_property_create_bitmask - create a new bitmask property type
c8e32cc1
DV		 3740 * @dev: drm device
3741 * @flags: flags specifying the property type
3742 * @name: name of the property
3743 * @props: enumeration lists with property bitflags
295ee853
DV		 3744 * @num_props: size of the @props array
3745 * @supported_bits: bitmask of all supported enumeration values
c8e32cc1 3746 *
295ee853 3747 * This creates a new bitmask drm property which can then be attached to a drm
c8e32cc1
DV		 3748 * object with drm_object_attach_property. The returned property object must be
3749 * freed with drm_property_destroy.
3750 *
3751 * Compared to plain enumeration properties userspace is allowed to set any
3752 * or'ed together combination of the predefined property bitflag values
3753 *
3754 * Returns:
3755 * A pointer to the newly created property on success, NULL on failure.
3756 */
49e27545
RC		 3757struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3758 int flags, const char *name,
3759 const struct drm_prop_enum_list *props,
7689ffb3
VS		 3760 int num_props,
3761 uint64_t supported_bits)
49e27545
RC		 3762{
3763 struct drm_property *property;
7689ffb3
VS		 3764 int i, ret, index = 0;
3765 int num_values = hweight64(supported_bits);
49e27545
RC		 3766
3767 flags |= DRM_MODE_PROP_BITMASK;
3768
3769 property = drm_property_create(dev, flags, name, num_values);
3770 if (!property)
3771 return NULL;
7689ffb3
VS		 3772 for (i = 0; i < num_props; i++) {
3773 if (!(supported_bits & (1ULL << props[i].type)))
3774 continue;
49e27545 3775
7689ffb3
VS		 3776 if (WARN_ON(index >= num_values)) {
3777 drm_property_destroy(dev, property);
3778 return NULL;
3779 }
3780
3781 ret = drm_property_add_enum(property, index++,
49e27545
RC		 3782 props[i].type,
3783 props[i].name);
3784 if (ret) {
3785 drm_property_destroy(dev, property);
3786 return NULL;
3787 }
3788 }
3789
3790 return property;
3791}
3792EXPORT_SYMBOL(drm_property_create_bitmask);
3793
ebc44cf3
RC		 3794static struct drm_property *property_create_range(struct drm_device *dev,
3795 int flags, const char *name,
3796 uint64_t min, uint64_t max)
3797{
3798 struct drm_property *property;
3799
3800 property = drm_property_create(dev, flags, name, 2);
3801 if (!property)
3802 return NULL;
3803
3804 property->values[0] = min;
3805 property->values[1] = max;
3806
3807 return property;
3808}
3809
c8e32cc1 3810/**
960cd9d4 3811 * drm_property_create_range - create a new unsigned ranged property type
c8e32cc1
DV		 3812 * @dev: drm device
3813 * @flags: flags specifying the property type
3814 * @name: name of the property
3815 * @min: minimum value of the property
3816 * @max: maximum value of the property
3817 *
3818 * This creates a new generic drm property which can then be attached to a drm
3819 * object with drm_object_attach_property. The returned property object must be
3820 * freed with drm_property_destroy.
3821 *
960cd9d4
DV		 3822 * Userspace is allowed to set any unsigned integer value in the (min, max)
3823 * range inclusive.
c8e32cc1
DV		 3824 *
3825 * Returns:
3826 * A pointer to the newly created property on success, NULL on failure.
3827 */
d9bc3c02
SH		 3828struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3829 const char *name,
3830 uint64_t min, uint64_t max)
3831{
ebc44cf3
RC		 3832 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3833 name, min, max);
d9bc3c02
SH		 3834}
3835EXPORT_SYMBOL(drm_property_create_range);
3836
960cd9d4
DV		 3837/**
3838 * drm_property_create_signed_range - create a new signed ranged property type
3839 * @dev: drm device
3840 * @flags: flags specifying the property type
3841 * @name: name of the property
3842 * @min: minimum value of the property
3843 * @max: maximum value of the property
3844 *
3845 * This creates a new generic drm property which can then be attached to a drm
3846 * object with drm_object_attach_property. The returned property object must be
3847 * freed with drm_property_destroy.
3848 *
3849 * Userspace is allowed to set any signed integer value in the (min, max)
3850 * range inclusive.
3851 *
3852 * Returns:
3853 * A pointer to the newly created property on success, NULL on failure.
3854 */
ebc44cf3
RC		 3855struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3856 int flags, const char *name,
3857 int64_t min, int64_t max)
3858{
3859 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3860 name, I642U64(min), I642U64(max));
3861}
3862EXPORT_SYMBOL(drm_property_create_signed_range);
3863
960cd9d4
DV		 3864/**
3865 * drm_property_create_object - create a new object property type
3866 * @dev: drm device
3867 * @flags: flags specifying the property type
3868 * @name: name of the property
3869 * @type: object type from DRM_MODE_OBJECT_* defines
3870 *
3871 * This creates a new generic drm property which can then be attached to a drm
3872 * object with drm_object_attach_property. The returned property object must be
3873 * freed with drm_property_destroy.
3874 *
3875 * Userspace is only allowed to set this to any property value of the given
3876 * @type. Only useful for atomic properties, which is enforced.
3877 *
3878 * Returns:
3879 * A pointer to the newly created property on success, NULL on failure.
3880 */
98f75de4
RC		 3881struct drm_property *drm_property_create_object(struct drm_device *dev,
3882 int flags, const char *name, uint32_t type)
3883{
3884 struct drm_property *property;
3885
3886 flags |= DRM_MODE_PROP_OBJECT;
3887
960cd9d4
DV		 3888 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3889 return NULL;
3890
98f75de4
RC		 3891 property = drm_property_create(dev, flags, name, 1);
3892 if (!property)
3893 return NULL;
3894
3895 property->values[0] = type;
3896
3897 return property;
3898}
3899EXPORT_SYMBOL(drm_property_create_object);
3900
960cd9d4
DV		 3901/**
3902 * drm_property_create_bool - create a new boolean property type
3903 * @dev: drm device
3904 * @flags: flags specifying the property type
3905 * @name: name of the property
3906 *
3907 * This creates a new generic drm property which can then be attached to a drm
3908 * object with drm_object_attach_property. The returned property object must be
3909 * freed with drm_property_destroy.
3910 *
3911 * This is implemented as a ranged property with only {0, 1} as valid values.
3912 *
3913 * Returns:
3914 * A pointer to the newly created property on success, NULL on failure.
3915 */
3916struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3917 const char *name)
3918{
3919 return drm_property_create_range(dev, flags, name, 0, 1);
3920}
3921EXPORT_SYMBOL(drm_property_create_bool);
3922
c8e32cc1
DV		 3923/**
3924 * drm_property_add_enum - add a possible value to an enumeration property
3925 * @property: enumeration property to change
3926 * @index: index of the new enumeration
3927 * @value: value of the new enumeration
3928 * @name: symbolic name of the new enumeration
3929 *
3930 * This functions adds enumerations to a property.
3931 *
3932 * It's use is deprecated, drivers should use one of the more specific helpers
3933 * to directly create the property with all enumerations already attached.
3934 *
3935 * Returns:
3936 * Zero on success, error code on failure.
3937 */
f453ba04
DA		 3938int drm_property_add_enum(struct drm_property *property, int index,
3939 uint64_t value, const char *name)
3940{
3941 struct drm_property_enum *prop_enum;
3942
5ea22f24
RC		 3943 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3944 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 3945 return -EINVAL;
3946
3947 /*
3948 * Bitmask enum properties have the additional constraint of values
3949 * from 0 to 63
3950 */
5ea22f24
RC		 3951 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3952 (value > 63))
f453ba04
DA		 3953 return -EINVAL;
3954
3758b341
DV		 3955 if (!list_empty(&property->enum_list)) {
3956 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 3957 if (prop_enum->value == value) {
3958 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3959 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3960 return 0;
3961 }
3962 }
3963 }
3964
3965 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3966 if (!prop_enum)
3967 return -ENOMEM;
3968
3969 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3970 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3971 prop_enum->value = value;
3972
3973 property->values[index] = value;
3758b341 3974 list_add_tail(&prop_enum->head, &property->enum_list);
f453ba04
DA		 3975 return 0;
3976}
3977EXPORT_SYMBOL(drm_property_add_enum);
3978
c8e32cc1
DV		 3979/**
3980 * drm_property_destroy - destroy a drm property
3981 * @dev: drm device
3982 * @property: property to destry
3983 *
3984 * This function frees a property including any attached resources like
3985 * enumeration values.
3986 */
f453ba04
DA		 3987void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3988{
3989 struct drm_property_enum *prop_enum, *pt;
3990
3758b341 3991 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
f453ba04
DA		 3992 list_del(&prop_enum->head);
3993 kfree(prop_enum);
3994 }
3995
3996 if (property->num_values)
3997 kfree(property->values);
3998 drm_mode_object_put(dev, &property->base);
3999 list_del(&property->head);
4000 kfree(property);
4001}
4002EXPORT_SYMBOL(drm_property_destroy);
4003
c8e32cc1
DV		 4004/**
4005 * drm_object_attach_property - attach a property to a modeset object
4006 * @obj: drm modeset object
4007 * @property: property to attach
4008 * @init_val: initial value of the property
4009 *
4010 * This attaches the given property to the modeset object with the given initial
4011 * value. Currently this function cannot fail since the properties are stored in
4012 * a statically sized array.
4013 */
c543188a
PZ		 4014void drm_object_attach_property(struct drm_mode_object *obj,
4015 struct drm_property *property,
4016 uint64_t init_val)
4017{
7f88a9be 4018 int count = obj->properties->count;
c543188a 4019
7f88a9be
PZ		 4020 if (count == DRM_OBJECT_MAX_PROPERTY) {
4021 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4022 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4023 "you see this message on the same object type.\n",
4024 obj->type);
4025 return;
c543188a
PZ		 4026 }
4027
b17cd757 4028 obj->properties->properties[count] = property;
7f88a9be
PZ		 4029 obj->properties->values[count] = init_val;
4030 obj->properties->count++;
88a48e29
RC		 4031 if (property->flags & DRM_MODE_PROP_ATOMIC)
4032 obj->properties->atomic_count++;
c543188a
PZ		 4033}
4034EXPORT_SYMBOL(drm_object_attach_property);
4035
c8e32cc1
DV		 4036/**
4037 * drm_object_property_set_value - set the value of a property
4038 * @obj: drm mode object to set property value for
4039 * @property: property to set
4040 * @val: value the property should be set to
4041 *
4042 * This functions sets a given property on a given object. This function only
4043 * changes the software state of the property, it does not call into the
4044 * driver's ->set_property callback.
4045 *
4046 * Returns:
4047 * Zero on success, error code on failure.
4048 */
c543188a
PZ		 4049int drm_object_property_set_value(struct drm_mode_object *obj,
4050 struct drm_property *property, uint64_t val)
4051{
4052 int i;
4053
7f88a9be 4054 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4055 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4056 obj->properties->values[i] = val;
4057 return 0;
4058 }
4059 }
4060
4061 return -EINVAL;
4062}
4063EXPORT_SYMBOL(drm_object_property_set_value);
4064
c8e32cc1
DV		 4065/**
4066 * drm_object_property_get_value - retrieve the value of a property
4067 * @obj: drm mode object to get property value from
4068 * @property: property to retrieve
4069 * @val: storage for the property value
4070 *
4071 * This function retrieves the softare state of the given property for the given
4072 * property. Since there is no driver callback to retrieve the current property
4073 * value this might be out of sync with the hardware, depending upon the driver
4074 * and property.
4075 *
4076 * Returns:
4077 * Zero on success, error code on failure.
4078 */
c543188a
PZ		 4079int drm_object_property_get_value(struct drm_mode_object *obj,
4080 struct drm_property *property, uint64_t *val)
4081{
4082 int i;
4083
88a48e29
RC		 4084 /* read-only properties bypass atomic mechanism and still store
4085 * their value in obj->properties->values[].. mostly to avoid
4086 * having to deal w/ EDID and similar props in atomic paths:
4087 */
4088 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4089 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4090 return drm_atomic_get_property(obj, property, val);
4091
7f88a9be 4092 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4093 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4094 *val = obj->properties->values[i];
4095 return 0;
4096 }
4097 }
4098
4099 return -EINVAL;
4100}
4101EXPORT_SYMBOL(drm_object_property_get_value);
4102
c8e32cc1 4103/**
1a498633 4104 * drm_mode_getproperty_ioctl - get the property metadata
c8e32cc1
DV		 4105 * @dev: DRM device
4106 * @data: ioctl data
4107 * @file_priv: DRM file info
4108 *
1a498633
DV		 4109 * This function retrieves the metadata for a given property, like the different
4110 * possible values for an enum property or the limits for a range property.
4111 *
4112 * Blob properties are special
c8e32cc1
DV		 4113 *
4114 * Called by the user via ioctl.
4115 *
4116 * Returns:
1a498633 4117 * Zero on success, negative errno on failure.
c8e32cc1 4118 */
f453ba04
DA		 4119int drm_mode_getproperty_ioctl(struct drm_device *dev,
4120 void *data, struct drm_file *file_priv)
4121{
f453ba04
DA		 4122 struct drm_mode_get_property *out_resp = data;
4123 struct drm_property *property;
4124 int enum_count = 0;
f453ba04
DA		 4125 int value_count = 0;
4126 int ret = 0, i;
4127 int copied;
4128 struct drm_property_enum *prop_enum;
4129 struct drm_mode_property_enum __user *enum_ptr;
f453ba04 4130 uint64_t __user *values_ptr;
f453ba04 4131
fb3b06c8
DA		 4132 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4133 return -EINVAL;
4134
84849903 4135 drm_modeset_lock_all(dev);
a2b34e22
RC		 4136 property = drm_property_find(dev, out_resp->prop_id);
4137 if (!property) {
f27657f2 4138 ret = -ENOENT;
f453ba04
DA		 4139 goto done;
4140 }
f453ba04 4141
5ea22f24
RC		 4142 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4143 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3758b341 4144 list_for_each_entry(prop_enum, &property->enum_list, head)
f453ba04 4145 enum_count++;
f453ba04
DA		 4146 }
4147
4148 value_count = property->num_values;
4149
4150 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4151 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4152 out_resp->flags = property->flags;
4153
4154 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 4155 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 4156 for (i = 0; i < value_count; i++) {
4157 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4158 ret = -EFAULT;
4159 goto done;
4160 }
4161 }
4162 }
4163 out_resp->count_values = value_count;
4164
5ea22f24
RC		 4165 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4166 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 4167 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4168 copied = 0;
81f6c7f8 4169 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3758b341 4170 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 4171
4172 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4173 ret = -EFAULT;
4174 goto done;
4175 }
4176
4177 if (copy_to_user(&enum_ptr[copied].name,
4178 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4179 ret = -EFAULT;
4180 goto done;
4181 }
4182 copied++;
4183 }
4184 }
4185 out_resp->count_enum_blobs = enum_count;
4186 }
4187
3758b341
DV		 4188 /*
4189 * NOTE: The idea seems to have been to use this to read all the blob
4190 * property values. But nothing ever added them to the corresponding
4191 * list, userspace always used the special-purpose get_blob ioctl to
4192 * read the value for a blob property. It also doesn't make a lot of
4193 * sense to return values here when everything else is just metadata for
4194 * the property itself.
4195 */
4196 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4197 out_resp->count_enum_blobs = 0;
f453ba04 4198done:
84849903 4199 drm_modeset_unlock_all(dev);
f453ba04
DA		 4200 return ret;
4201}
4202
ecbbe59b
TR		 4203static struct drm_property_blob *
4204drm_property_create_blob(struct drm_device *dev, size_t length,
12e6cecd 4205 const void *data)
f453ba04
DA		 4206{
4207 struct drm_property_blob *blob;
6bfc56aa 4208 int ret;
f453ba04
DA		 4209
4210 if (!length || !data)
4211 return NULL;
4212
4213 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4214 if (!blob)
4215 return NULL;
4216
6bfc56aa
VS		 4217 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4218 if (ret) {
4219 kfree(blob);
4220 return NULL;
4221 }
4222
f453ba04
DA		 4223 blob->length = length;
4224
4225 memcpy(blob->data, data, length);
4226
f453ba04
DA		 4227 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4228 return blob;
4229}
4230
4231static void drm_property_destroy_blob(struct drm_device *dev,
4232 struct drm_property_blob *blob)
4233{
4234 drm_mode_object_put(dev, &blob->base);
4235 list_del(&blob->head);
4236 kfree(blob);
4237}
4238
c8e32cc1
DV		 4239/**
4240 * drm_mode_getblob_ioctl - get the contents of a blob property value
4241 * @dev: DRM device
4242 * @data: ioctl data
4243 * @file_priv: DRM file info
4244 *
4245 * This function retrieves the contents of a blob property. The value stored in
4246 * an object's blob property is just a normal modeset object id.
4247 *
4248 * Called by the user via ioctl.
4249 *
4250 * Returns:
1a498633 4251 * Zero on success, negative errno on failure.
c8e32cc1 4252 */
f453ba04
DA		 4253int drm_mode_getblob_ioctl(struct drm_device *dev,
4254 void *data, struct drm_file *file_priv)
4255{
f453ba04
DA		 4256 struct drm_mode_get_blob *out_resp = data;
4257 struct drm_property_blob *blob;
4258 int ret = 0;
81f6c7f8 4259 void __user *blob_ptr;
f453ba04 4260
fb3b06c8
DA		 4261 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4262 return -EINVAL;
4263
84849903 4264 drm_modeset_lock_all(dev);
a2b34e22
RC		 4265 blob = drm_property_blob_find(dev, out_resp->blob_id);
4266 if (!blob) {
f27657f2 4267 ret = -ENOENT;
f453ba04
DA		 4268 goto done;
4269 }
f453ba04
DA		 4270
4271 if (out_resp->length == blob->length) {
81f6c7f8 4272 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4dfd909f 4273 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
f453ba04
DA		 4274 ret = -EFAULT;
4275 goto done;
4276 }
4277 }
4278 out_resp->length = blob->length;
4279
4280done:
84849903 4281 drm_modeset_unlock_all(dev);
f453ba04
DA		 4282 return ret;
4283}
4284
cc7096fb
DA		 4285/**
4286 * drm_mode_connector_set_path_property - set tile property on connector
4287 * @connector: connector to set property on.
4288 * @path: path to use for property.
4289 *
4290 * This creates a property to expose to userspace to specify a
4291 * connector path. This is mainly used for DisplayPort MST where
4292 * connectors have a topology and we want to allow userspace to give
4293 * them more meaningful names.
4294 *
4295 * Returns:
1a498633 4296 * Zero on success, negative errno on failure.
cc7096fb 4297 */
43aba7eb 4298int drm_mode_connector_set_path_property(struct drm_connector *connector,
12e6cecd 4299 const char *path)
43aba7eb
DA		 4300{
4301 struct drm_device *dev = connector->dev;
ecbbe59b
TR		 4302 size_t size = strlen(path) + 1;
4303 int ret;
43aba7eb
DA		 4304
4305 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4306 size, path);
4307 if (!connector->path_blob_ptr)
4308 return -EINVAL;
4309
4310 ret = drm_object_property_set_value(&connector->base,
4311 dev->mode_config.path_property,
4312 connector->path_blob_ptr->base.id);
4313 return ret;
4314}
4315EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4316
6f134d7b
DA		 4317/**
4318 * drm_mode_connector_set_tile_property - set tile property on connector
4319 * @connector: connector to set property on.
4320 *
4321 * This looks up the tile information for a connector, and creates a
4322 * property for userspace to parse if it exists. The property is of
4323 * the form of 8 integers using ':' as a separator.
4324 *
4325 * Returns:
4326 * Zero on success, errno on failure.
4327 */
4328int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4329{
4330 struct drm_device *dev = connector->dev;
4331 int ret, size;
4332 char tile[256];
4333
4334 if (connector->tile_blob_ptr)
4335 drm_property_destroy_blob(dev, connector->tile_blob_ptr);
4336
4337 if (!connector->has_tile) {
4338 connector->tile_blob_ptr = NULL;
4339 ret = drm_object_property_set_value(&connector->base,
4340 dev->mode_config.tile_property, 0);
4341 return ret;
4342 }
4343
4344 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4345 connector->tile_group->id, connector->tile_is_single_monitor,
4346 connector->num_h_tile, connector->num_v_tile,
4347 connector->tile_h_loc, connector->tile_v_loc,
4348 connector->tile_h_size, connector->tile_v_size);
4349 size = strlen(tile) + 1;
4350
4351 connector->tile_blob_ptr = drm_property_create_blob(connector->dev,
4352 size, tile);
4353 if (!connector->tile_blob_ptr)
4354 return -EINVAL;
4355
4356 ret = drm_object_property_set_value(&connector->base,
4357 dev->mode_config.tile_property,
4358 connector->tile_blob_ptr->base.id);
4359 return ret;
4360}
4361EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4362
c8e32cc1
DV		 4363/**
4364 * drm_mode_connector_update_edid_property - update the edid property of a connector
4365 * @connector: drm connector
4366 * @edid: new value of the edid property
4367 *
4368 * This function creates a new blob modeset object and assigns its id to the
4369 * connector's edid property.
4370 *
4371 * Returns:
1a498633 4372 * Zero on success, negative errno on failure.
c8e32cc1 4373 */
f453ba04 4374int drm_mode_connector_update_edid_property(struct drm_connector *connector,
12e6cecd 4375 const struct edid *edid)
f453ba04
DA		 4376{
4377 struct drm_device *dev = connector->dev;
ecbbe59b
TR		 4378 size_t size;
4379 int ret;
f453ba04 4380
4cf2b281
TW		 4381 /* ignore requests to set edid when overridden */
4382 if (connector->override_edid)
4383 return 0;
4384
f453ba04
DA		 4385 if (connector->edid_blob_ptr)
4386 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4387
4388 /* Delete edid, when there is none. */
4389 if (!edid) {
4390 connector->edid_blob_ptr = NULL;
58495563 4391 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
f453ba04
DA		 4392 return ret;
4393 }
4394
7466f4cc
AJ		 4395 size = EDID_LENGTH * (1 + edid->extensions);
4396 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4397 size, edid);
e655d122
SK		 4398 if (!connector->edid_blob_ptr)
4399 return -EINVAL;
f453ba04 4400
58495563 4401 ret = drm_object_property_set_value(&connector->base,
f453ba04
DA		 4402 dev->mode_config.edid_property,
4403 connector->edid_blob_ptr->base.id);
4404
4405 return ret;
4406}
4407EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4408
3843e71f
RC		 4409/* Some properties could refer to dynamic refcnt'd objects, or things that
4410 * need special locking to handle lifetime issues (ie. to ensure the prop
4411 * value doesn't become invalid part way through the property update due to
4412 * race). The value returned by reference via 'obj' should be passed back
4413 * to drm_property_change_valid_put() after the property is set (and the
4414 * object to which the property is attached has a chance to take it's own
4415 * reference).
4416 */
d34f20d6 4417bool drm_property_change_valid_get(struct drm_property *property,
3843e71f 4418 uint64_t value, struct drm_mode_object **ref)
26a34815 4419{
2ca651d1
TR		 4420 int i;
4421
26a34815
PZ		 4422 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4423 return false;
5ea22f24 4424
3843e71f
RC		 4425 *ref = NULL;
4426
5ea22f24 4427 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 4428 if (value < property->values[0] || value > property->values[1])
4429 return false;
4430 return true;
ebc44cf3
RC		 4431 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4432 int64_t svalue = U642I64(value);
4dfd909f 4433
ebc44cf3
RC		 4434 if (svalue < U642I64(property->values[0]) ||
4435 svalue > U642I64(property->values[1]))
4436 return false;
4437 return true;
5ea22f24 4438 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
592c20ee 4439 uint64_t valid_mask = 0;
4dfd909f 4440
49e27545
RC		 4441 for (i = 0; i < property->num_values; i++)
4442 valid_mask |= (1ULL << property->values[i]);
4443 return !(value & ~valid_mask);
5ea22f24 4444 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
c4a56750
VS		 4445 /* Only the driver knows */
4446 return true;
98f75de4 4447 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
98f75de4
RC		 4448 /* a zero value for an object property translates to null: */
4449 if (value == 0)
4450 return true;
3843e71f
RC		 4451
4452 /* handle refcnt'd objects specially: */
4453 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4454 struct drm_framebuffer *fb;
4455 fb = drm_framebuffer_lookup(property->dev, value);
4456 if (fb) {
4457 *ref = &fb->base;
4458 return true;
4459 } else {
4460 return false;
4461 }
4462 } else {
4463 return _object_find(property->dev, value, property->values[0]) != NULL;
4464 }
26a34815 4465 }
2ca651d1
TR		 4466
4467 for (i = 0; i < property->num_values; i++)
4468 if (property->values[i] == value)
4469 return true;
4470 return false;
26a34815
PZ		 4471}
4472
d34f20d6 4473void drm_property_change_valid_put(struct drm_property *property,
3843e71f
RC		 4474 struct drm_mode_object *ref)
4475{
4476 if (!ref)
4477 return;
4478
4479 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4480 if (property->values[0] == DRM_MODE_OBJECT_FB)
4481 drm_framebuffer_unreference(obj_to_fb(ref));
4482 }
4483}
4484
c8e32cc1
DV		 4485/**
4486 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4487 * @dev: DRM device
4488 * @data: ioctl data
4489 * @file_priv: DRM file info
4490 *
4491 * This function sets the current value for a connectors's property. It also
4492 * calls into a driver's ->set_property callback to update the hardware state
4493 *
4494 * Called by the user via ioctl.
4495 *
4496 * Returns:
1a498633 4497 * Zero on success, negative errno on failure.
c8e32cc1 4498 */
f453ba04
DA		 4499int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4500 void *data, struct drm_file *file_priv)
4501{
0057d8dd
PZ		 4502 struct drm_mode_connector_set_property *conn_set_prop = data;
4503 struct drm_mode_obj_set_property obj_set_prop = {
4504 .value = conn_set_prop->value,
4505 .prop_id = conn_set_prop->prop_id,
4506 .obj_id = conn_set_prop->connector_id,
4507 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4508 };
fb3b06c8 4509
0057d8dd
PZ		 4510 /* It does all the locking and checking we need */
4511 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 4512}
4513
c543188a
PZ		 4514static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4515 struct drm_property *property,
4516 uint64_t value)
4517{
4518 int ret = -EINVAL;
4519 struct drm_connector *connector = obj_to_connector(obj);
4520
4521 /* Do DPMS ourselves */
4522 if (property == connector->dev->mode_config.dpms_property) {
4523 if (connector->funcs->dpms)
4524 (*connector->funcs->dpms)(connector, (int)value);
4525 ret = 0;
4526 } else if (connector->funcs->set_property)
4527 ret = connector->funcs->set_property(connector, property, value);
4528
4529 /* store the property value if successful */
4530 if (!ret)
58495563 4531 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 4532 return ret;
4533}
4534
bffd9de0
PZ		 4535static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4536 struct drm_property *property,
4537 uint64_t value)
4538{
4539 int ret = -EINVAL;
4540 struct drm_crtc *crtc = obj_to_crtc(obj);
4541
4542 if (crtc->funcs->set_property)
4543 ret = crtc->funcs->set_property(crtc, property, value);
4544 if (!ret)
4545 drm_object_property_set_value(obj, property, value);
4546
4547 return ret;
4548}
4549
3a5f87c2
TW		 4550/**
4551 * drm_mode_plane_set_obj_prop - set the value of a property
4552 * @plane: drm plane object to set property value for
4553 * @property: property to set
4554 * @value: value the property should be set to
4555 *
4556 * This functions sets a given property on a given plane object. This function
4557 * calls the driver's ->set_property callback and changes the software state of
4558 * the property if the callback succeeds.
4559 *
4560 * Returns:
4561 * Zero on success, error code on failure.
4562 */
4563int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4564 struct drm_property *property,
4565 uint64_t value)
4d93914a
RC		 4566{
4567 int ret = -EINVAL;
3a5f87c2 4568 struct drm_mode_object *obj = &plane->base;
4d93914a
RC		 4569
4570 if (plane->funcs->set_property)
4571 ret = plane->funcs->set_property(plane, property, value);
4572 if (!ret)
4573 drm_object_property_set_value(obj, property, value);
4574
4575 return ret;
4576}
3a5f87c2 4577EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4d93914a 4578
c8e32cc1 4579/**
1a498633 4580 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
c8e32cc1
DV		 4581 * @dev: DRM device
4582 * @data: ioctl data
4583 * @file_priv: DRM file info
4584 *
4585 * This function retrieves the current value for an object's property. Compared
4586 * to the connector specific ioctl this one is extended to also work on crtc and
4587 * plane objects.
4588 *
4589 * Called by the user via ioctl.
4590 *
4591 * Returns:
1a498633 4592 * Zero on success, negative errno on failure.
c8e32cc1 4593 */
c543188a
PZ		 4594int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4595 struct drm_file *file_priv)
4596{
4597 struct drm_mode_obj_get_properties *arg = data;
4598 struct drm_mode_object *obj;
4599 int ret = 0;
c543188a
PZ		 4600
4601 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4602 return -EINVAL;
4603
84849903 4604 drm_modeset_lock_all(dev);
c543188a
PZ		 4605
4606 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4607 if (!obj) {
f27657f2 4608 ret = -ENOENT;
c543188a
PZ		 4609 goto out;
4610 }
4611 if (!obj->properties) {
4612 ret = -EINVAL;
4613 goto out;
4614 }
4615
88a48e29 4616 ret = get_properties(obj, file_priv->atomic,
95cbf110
RC		 4617 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4618 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4619 &arg->count_props);
c543188a 4620
c543188a 4621out:
84849903 4622 drm_modeset_unlock_all(dev);
c543188a
PZ		 4623 return ret;
4624}
4625
c8e32cc1
DV		 4626/**
4627 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4628 * @dev: DRM device
4629 * @data: ioctl data
4630 * @file_priv: DRM file info
4631 *
4632 * This function sets the current value for an object's property. It also calls
4633 * into a driver's ->set_property callback to update the hardware state.
4634 * Compared to the connector specific ioctl this one is extended to also work on
4635 * crtc and plane objects.
4636 *
4637 * Called by the user via ioctl.
4638 *
4639 * Returns:
1a498633 4640 * Zero on success, negative errno on failure.
c8e32cc1 4641 */
c543188a
PZ		 4642int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4643 struct drm_file *file_priv)
4644{
4645 struct drm_mode_obj_set_property *arg = data;
4646 struct drm_mode_object *arg_obj;
4647 struct drm_mode_object *prop_obj;
4648 struct drm_property *property;
3843e71f
RC		 4649 int i, ret = -EINVAL;
4650 struct drm_mode_object *ref;
c543188a
PZ		 4651
4652 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4653 return -EINVAL;
4654
84849903 4655 drm_modeset_lock_all(dev);
c543188a
PZ		 4656
4657 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 4658 if (!arg_obj) {
4659 ret = -ENOENT;
c543188a 4660 goto out;
f27657f2 4661 }
c543188a
PZ		 4662 if (!arg_obj->properties)
4663 goto out;
4664
7f88a9be 4665 for (i = 0; i < arg_obj->properties->count; i++)
b17cd757 4666 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
c543188a
PZ		 4667 break;
4668
7f88a9be 4669 if (i == arg_obj->properties->count)
c543188a
PZ		 4670 goto out;
4671
4672 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4673 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 4674 if (!prop_obj) {
4675 ret = -ENOENT;
c543188a 4676 goto out;
f27657f2 4677 }
c543188a
PZ		 4678 property = obj_to_property(prop_obj);
4679
3843e71f 4680 if (!drm_property_change_valid_get(property, arg->value, &ref))
c543188a
PZ		 4681 goto out;
4682
4683 switch (arg_obj->type) {
4684 case DRM_MODE_OBJECT_CONNECTOR:
4685 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4686 arg->value);
4687 break;
bffd9de0
PZ		 4688 case DRM_MODE_OBJECT_CRTC:
4689 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4690 break;
4d93914a 4691 case DRM_MODE_OBJECT_PLANE:
3a5f87c2
TW		 4692 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4693 property, arg->value);
4d93914a 4694 break;
c543188a
PZ		 4695 }
4696
3843e71f
RC		 4697 drm_property_change_valid_put(property, ref);
4698
c543188a 4699out:
84849903 4700 drm_modeset_unlock_all(dev);
c543188a
PZ		 4701 return ret;
4702}
4703
c8e32cc1
DV		 4704/**
4705 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4706 * @connector: connector to attach
4707 * @encoder: encoder to attach @connector to
4708 *
4709 * This function links up a connector to an encoder. Note that the routing
4710 * restrictions between encoders and crtcs are exposed to userspace through the
4711 * possible_clones and possible_crtcs bitmasks.
4712 *
4713 * Returns:
1a498633 4714 * Zero on success, negative errno on failure.
c8e32cc1 4715 */
f453ba04
DA		 4716int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4717 struct drm_encoder *encoder)
4718{
4719 int i;
4720
4721 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4722 if (connector->encoder_ids[i] == 0) {
4723 connector->encoder_ids[i] = encoder->base.id;
4724 return 0;
4725 }
4726 }
4727 return -ENOMEM;
4728}
4729EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4730
c8e32cc1
DV		 4731/**
4732 * drm_mode_crtc_set_gamma_size - set the gamma table size
4733 * @crtc: CRTC to set the gamma table size for
4734 * @gamma_size: size of the gamma table
4735 *
4736 * Drivers which support gamma tables should set this to the supported gamma
4737 * table size when initializing the CRTC. Currently the drm core only supports a
4738 * fixed gamma table size.
4739 *
4740 * Returns:
1a498633 4741 * Zero on success, negative errno on failure.
c8e32cc1 4742 */
4cae5b84 4743int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 4744 int gamma_size)
f453ba04
DA		 4745{
4746 crtc->gamma_size = gamma_size;
4747
bd3f0ff9
TR		 4748 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
4749 GFP_KERNEL);
f453ba04
DA		 4750 if (!crtc->gamma_store) {
4751 crtc->gamma_size = 0;
4cae5b84 4752 return -ENOMEM;
f453ba04
DA		 4753 }
4754
4cae5b84 4755 return 0;
f453ba04
DA		 4756}
4757EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4758
c8e32cc1
DV		 4759/**
4760 * drm_mode_gamma_set_ioctl - set the gamma table
4761 * @dev: DRM device
4762 * @data: ioctl data
4763 * @file_priv: DRM file info
4764 *
4765 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4766 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4767 *
4768 * Called by the user via ioctl.
4769 *
4770 * Returns:
1a498633 4771 * Zero on success, negative errno on failure.
c8e32cc1 4772 */
f453ba04
DA		 4773int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4774 void *data, struct drm_file *file_priv)
4775{
4776 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4777 struct drm_crtc *crtc;
4778 void *r_base, *g_base, *b_base;
4779 int size;
4780 int ret = 0;
4781
fb3b06c8
DA		 4782 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4783 return -EINVAL;
4784
84849903 4785 drm_modeset_lock_all(dev);
a2b34e22
RC		 4786 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4787 if (!crtc) {
f27657f2 4788 ret = -ENOENT;
f453ba04
DA		 4789 goto out;
4790 }
f453ba04 4791
ebe0f244
LP		 4792 if (crtc->funcs->gamma_set == NULL) {
4793 ret = -ENOSYS;
4794 goto out;
4795 }
4796
f453ba04
DA		 4797 /* memcpy into gamma store */
4798 if (crtc_lut->gamma_size != crtc->gamma_size) {
4799 ret = -EINVAL;
4800 goto out;
4801 }
4802
4803 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4804 r_base = crtc->gamma_store;
4805 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4806 ret = -EFAULT;
4807 goto out;
4808 }
4809
4810 g_base = r_base + size;
4811 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4812 ret = -EFAULT;
4813 goto out;
4814 }
4815
4816 b_base = g_base + size;
4817 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4818 ret = -EFAULT;
4819 goto out;
4820 }
4821
7203425a 4822 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 4823
4824out:
84849903 4825 drm_modeset_unlock_all(dev);
f453ba04
DA		 4826 return ret;
4827
4828}
4829
c8e32cc1
DV		 4830/**
4831 * drm_mode_gamma_get_ioctl - get the gamma table
4832 * @dev: DRM device
4833 * @data: ioctl data
4834 * @file_priv: DRM file info
4835 *
4836 * Copy the current gamma table into the storage provided. This also provides
4837 * the gamma table size the driver expects, which can be used to size the
4838 * allocated storage.
4839 *
4840 * Called by the user via ioctl.
4841 *
4842 * Returns:
1a498633 4843 * Zero on success, negative errno on failure.
c8e32cc1 4844 */
f453ba04
DA		 4845int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4846 void *data, struct drm_file *file_priv)
4847{
4848 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4849 struct drm_crtc *crtc;
4850 void *r_base, *g_base, *b_base;
4851 int size;
4852 int ret = 0;
4853
fb3b06c8
DA		 4854 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4855 return -EINVAL;
4856
84849903 4857 drm_modeset_lock_all(dev);
a2b34e22
RC		 4858 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4859 if (!crtc) {
f27657f2 4860 ret = -ENOENT;
f453ba04
DA		 4861 goto out;
4862 }
f453ba04
DA		 4863
4864 /* memcpy into gamma store */
4865 if (crtc_lut->gamma_size != crtc->gamma_size) {
4866 ret = -EINVAL;
4867 goto out;
4868 }
4869
4870 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4871 r_base = crtc->gamma_store;
4872 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4873 ret = -EFAULT;
4874 goto out;
4875 }
4876
4877 g_base = r_base + size;
4878 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4879 ret = -EFAULT;
4880 goto out;
4881 }
4882
4883 b_base = g_base + size;
4884 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4885 ret = -EFAULT;
4886 goto out;
4887 }
4888out:
84849903 4889 drm_modeset_unlock_all(dev);
f453ba04
DA		 4890 return ret;
4891}
d91d8a3f 4892
c8e32cc1
DV		 4893/**
4894 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4895 * @dev: DRM device
4896 * @data: ioctl data
4897 * @file_priv: DRM file info
4898 *
4899 * This schedules an asynchronous update on a given CRTC, called page flip.
4900 * Optionally a drm event is generated to signal the completion of the event.
4901 * Generic drivers cannot assume that a pageflip with changed framebuffer
4902 * properties (including driver specific metadata like tiling layout) will work,
4903 * but some drivers support e.g. pixel format changes through the pageflip
4904 * ioctl.
4905 *
4906 * Called by the user via ioctl.
4907 *
4908 * Returns:
1a498633 4909 * Zero on success, negative errno on failure.
c8e32cc1 4910 */
d91d8a3f
KH		 4911int drm_mode_page_flip_ioctl(struct drm_device *dev,
4912 void *data, struct drm_file *file_priv)
4913{
4914 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 4915 struct drm_crtc *crtc;
3d30a59b 4916 struct drm_framebuffer *fb = NULL;
d91d8a3f
KH		 4917 struct drm_pending_vblank_event *e = NULL;
4918 unsigned long flags;
4919 int ret = -EINVAL;
4920
4921 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4922 page_flip->reserved != 0)
4923 return -EINVAL;
4924
62f2104f
KP		 4925 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4926 return -EINVAL;
4927
a2b34e22
RC		 4928 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4929 if (!crtc)
f27657f2 4930 return -ENOENT;
d91d8a3f 4931
4d02e2de 4932 drm_modeset_lock_crtc(crtc, crtc->primary);
f4510a27 4933 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 4934 /* The framebuffer is currently unbound, presumably
4935 * due to a hotplug event, that userspace has not
4936 * yet discovered.
4937 */
4938 ret = -EBUSY;
4939 goto out;
4940 }
4941
d91d8a3f
KH		 4942 if (crtc->funcs->page_flip == NULL)
4943 goto out;
4944
786b99ed 4945 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 4946 if (!fb) {
4947 ret = -ENOENT;
d91d8a3f 4948 goto out;
37c4e705 4949 }
d91d8a3f 4950
c11e9283
DL		 4951 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4952 if (ret)
5f61bb42 4953 goto out;
5f61bb42 4954
f4510a27 4955 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 4956 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4957 ret = -EINVAL;
4958 goto out;
4959 }
4960
d91d8a3f
KH		 4961 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4962 ret = -ENOMEM;
4963 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 4964 if (file_priv->event_space < sizeof(e->event)) {
d91d8a3f
KH		 4965 spin_unlock_irqrestore(&dev->event_lock, flags);
4966 goto out;
4967 }
f76511b9 4968 file_priv->event_space -= sizeof(e->event);
d91d8a3f
KH		 4969 spin_unlock_irqrestore(&dev->event_lock, flags);
4970
f76511b9 4971 e = kzalloc(sizeof(*e), GFP_KERNEL);
d91d8a3f
KH		 4972 if (e == NULL) {
4973 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 4974 file_priv->event_space += sizeof(e->event);
d91d8a3f
KH		 4975 spin_unlock_irqrestore(&dev->event_lock, flags);
4976 goto out;
4977 }
4978
7bd4d7be 4979 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
f76511b9 4980 e->event.base.length = sizeof(e->event);
d91d8a3f
KH		 4981 e->event.user_data = page_flip->user_data;
4982 e->base.event = &e->event.base;
4983 e->base.file_priv = file_priv;
4984 e->base.destroy =
4985 (void (*) (struct drm_pending_event *)) kfree;
4986 }
4987
3d30a59b 4988 crtc->primary->old_fb = crtc->primary->fb;
ed8d1975 4989 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 4990 if (ret) {
aef6a7ee
JS		 4991 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4992 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 4993 file_priv->event_space += sizeof(e->event);
aef6a7ee
JS		 4994 spin_unlock_irqrestore(&dev->event_lock, flags);
4995 kfree(e);
4996 }
b0d12325 4997 /* Keep the old fb, don't unref it. */
3d30a59b 4998 crtc->primary->old_fb = NULL;
b0d12325 4999 } else {
8cf1e981
TR		 5000 /*
5001 * Warn if the driver hasn't properly updated the crtc->fb
5002 * field to reflect that the new framebuffer is now used.
5003 * Failing to do so will screw with the reference counting
5004 * on framebuffers.
5005 */
f4510a27 5006 WARN_ON(crtc->primary->fb != fb);
b0d12325
DV		 5007 /* Unref only the old framebuffer. */
5008 fb = NULL;
d91d8a3f
KH		 5009 }
5010
5011out:
b0d12325
DV		 5012 if (fb)
5013 drm_framebuffer_unreference(fb);
3d30a59b
DV		 5014 if (crtc->primary->old_fb)
5015 drm_framebuffer_unreference(crtc->primary->old_fb);
5016 crtc->primary->old_fb = NULL;
d059f652 5017 drm_modeset_unlock_crtc(crtc);
b4d5e7d1 5018
d91d8a3f
KH		 5019 return ret;
5020}
eb033556 5021
c8e32cc1
DV		 5022/**
5023 * drm_mode_config_reset - call ->reset callbacks
5024 * @dev: drm device
5025 *
5026 * This functions calls all the crtc's, encoder's and connector's ->reset
5027 * callback. Drivers can use this in e.g. their driver load or resume code to
5028 * reset hardware and software state.
5029 */
eb033556
CW		 5030void drm_mode_config_reset(struct drm_device *dev)
5031{
5032 struct drm_crtc *crtc;
2a0d7cfd 5033 struct drm_plane *plane;
eb033556
CW		 5034 struct drm_encoder *encoder;
5035 struct drm_connector *connector;
5036
2a0d7cfd
DV		 5037 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
5038 if (plane->funcs->reset)
5039 plane->funcs->reset(plane);
5040
eb033556
CW		 5041 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
5042 if (crtc->funcs->reset)
5043 crtc->funcs->reset(crtc);
5044
5045 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
5046 if (encoder->funcs->reset)
5047 encoder->funcs->reset(encoder);
5048
5e2cb2f6
DV		 5049 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
5050 connector->status = connector_status_unknown;
5051
eb033556
CW		 5052 if (connector->funcs->reset)
5053 connector->funcs->reset(connector);
5e2cb2f6 5054 }
eb033556
CW		 5055}
5056EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 5057
c8e32cc1
DV		 5058/**
5059 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5060 * @dev: DRM device
5061 * @data: ioctl data
5062 * @file_priv: DRM file info
5063 *
5064 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5065 * TTM or something else entirely) and returns the resulting buffer handle. This
5066 * handle can then be wrapped up into a framebuffer modeset object.
5067 *
5068 * Note that userspace is not allowed to use such objects for render
5069 * acceleration - drivers must create their own private ioctls for such a use
5070 * case.
5071 *
5072 * Called by the user via ioctl.
5073 *
5074 * Returns:
1a498633 5075 * Zero on success, negative errno on failure.
c8e32cc1 5076 */
ff72145b
DA		 5077int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5078 void *data, struct drm_file *file_priv)
5079{
5080 struct drm_mode_create_dumb *args = data;
b28cd41f 5081 u32 cpp, stride, size;
ff72145b
DA		 5082
5083 if (!dev->driver->dumb_create)
5084 return -ENOSYS;
b28cd41f
DH		 5085 if (!args->width || !args->height || !args->bpp)
5086 return -EINVAL;
5087
5088 /* overflow checks for 32bit size calculations */
00e72089 5089 /* NOTE: DIV_ROUND_UP() can overflow */
b28cd41f 5090 cpp = DIV_ROUND_UP(args->bpp, 8);
00e72089 5091 if (!cpp || cpp > 0xffffffffU / args->width)
b28cd41f
DH		 5092 return -EINVAL;
5093 stride = cpp * args->width;
5094 if (args->height > 0xffffffffU / stride)
5095 return -EINVAL;
5096
5097 /* test for wrap-around */
5098 size = args->height * stride;
5099 if (PAGE_ALIGN(size) == 0)
5100 return -EINVAL;
5101
f6085952
TR		 5102 /*
5103 * handle, pitch and size are output parameters. Zero them out to
5104 * prevent drivers from accidentally using uninitialized data. Since
5105 * not all existing userspace is clearing these fields properly we
5106 * cannot reject IOCTL with garbage in them.
5107 */
5108 args->handle = 0;
5109 args->pitch = 0;
5110 args->size = 0;
5111
ff72145b
DA		 5112 return dev->driver->dumb_create(file_priv, dev, args);
5113}
5114
c8e32cc1
DV		 5115/**
5116 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5117 * @dev: DRM device
5118 * @data: ioctl data
5119 * @file_priv: DRM file info
5120 *
5121 * Allocate an offset in the drm device node's address space to be able to
5122 * memory map a dumb buffer.
5123 *
5124 * Called by the user via ioctl.
5125 *
5126 * Returns:
1a498633 5127 * Zero on success, negative errno on failure.
c8e32cc1 5128 */
ff72145b
DA		 5129int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5130 void *data, struct drm_file *file_priv)
5131{
5132 struct drm_mode_map_dumb *args = data;
5133
5134 /* call driver ioctl to get mmap offset */
5135 if (!dev->driver->dumb_map_offset)
5136 return -ENOSYS;
5137
5138 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5139}
5140
c8e32cc1
DV		 5141/**
5142 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5143 * @dev: DRM device
5144 * @data: ioctl data
5145 * @file_priv: DRM file info
5146 *
5147 * This destroys the userspace handle for the given dumb backing storage buffer.
5148 * Since buffer objects must be reference counted in the kernel a buffer object
5149 * won't be immediately freed if a framebuffer modeset object still uses it.
5150 *
5151 * Called by the user via ioctl.
5152 *
5153 * Returns:
1a498633 5154 * Zero on success, negative errno on failure.
c8e32cc1 5155 */
ff72145b
DA		 5156int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5157 void *data, struct drm_file *file_priv)
5158{
5159 struct drm_mode_destroy_dumb *args = data;
5160
5161 if (!dev->driver->dumb_destroy)
5162 return -ENOSYS;
5163
5164 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5165}
248dbc23 5166
c8e32cc1
DV		 5167/**
5168 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5169 * @format: pixel format (DRM_FORMAT_*)
5170 * @depth: storage for the depth value
5171 * @bpp: storage for the bpp value
5172 *
5173 * This only supports RGB formats here for compat with code that doesn't use
5174 * pixel formats directly yet.
248dbc23
DA		 5175 */
5176void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5177 int *bpp)
5178{
5179 switch (format) {
c51a6bc5 5180 case DRM_FORMAT_C8:
04b3924d
VS		 5181 case DRM_FORMAT_RGB332:
5182 case DRM_FORMAT_BGR233:
248dbc23
DA		 5183 *depth = 8;
5184 *bpp = 8;
5185 break;
04b3924d
VS		 5186 case DRM_FORMAT_XRGB1555:
5187 case DRM_FORMAT_XBGR1555:
5188 case DRM_FORMAT_RGBX5551:
5189 case DRM_FORMAT_BGRX5551:
5190 case DRM_FORMAT_ARGB1555:
5191 case DRM_FORMAT_ABGR1555:
5192 case DRM_FORMAT_RGBA5551:
5193 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 5194 *depth = 15;
5195 *bpp = 16;
5196 break;
04b3924d
VS		 5197 case DRM_FORMAT_RGB565:
5198 case DRM_FORMAT_BGR565:
248dbc23
DA		 5199 *depth = 16;
5200 *bpp = 16;
5201 break;
04b3924d
VS		 5202 case DRM_FORMAT_RGB888:
5203 case DRM_FORMAT_BGR888:
5204 *depth = 24;
5205 *bpp = 24;
5206 break;
5207 case DRM_FORMAT_XRGB8888:
5208 case DRM_FORMAT_XBGR8888:
5209 case DRM_FORMAT_RGBX8888:
5210 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 5211 *depth = 24;
5212 *bpp = 32;
5213 break;
04b3924d
VS		 5214 case DRM_FORMAT_XRGB2101010:
5215 case DRM_FORMAT_XBGR2101010:
5216 case DRM_FORMAT_RGBX1010102:
5217 case DRM_FORMAT_BGRX1010102:
5218 case DRM_FORMAT_ARGB2101010:
5219 case DRM_FORMAT_ABGR2101010:
5220 case DRM_FORMAT_RGBA1010102:
5221 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 5222 *depth = 30;
5223 *bpp = 32;
5224 break;
04b3924d
VS		 5225 case DRM_FORMAT_ARGB8888:
5226 case DRM_FORMAT_ABGR8888:
5227 case DRM_FORMAT_RGBA8888:
5228 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 5229 *depth = 32;
5230 *bpp = 32;
5231 break;
5232 default:
23c453a4
VS		 5233 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5234 drm_get_format_name(format));
248dbc23
DA		 5235 *depth = 0;
5236 *bpp = 0;
5237 break;
5238 }
5239}
5240EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 5241
5242/**
5243 * drm_format_num_planes - get the number of planes for format
5244 * @format: pixel format (DRM_FORMAT_*)
5245 *
c8e32cc1 5246 * Returns:
141670e9
VS		 5247 * The number of planes used by the specified pixel format.
5248 */
5249int drm_format_num_planes(uint32_t format)
5250{
5251 switch (format) {
5252 case DRM_FORMAT_YUV410:
5253 case DRM_FORMAT_YVU410:
5254 case DRM_FORMAT_YUV411:
5255 case DRM_FORMAT_YVU411:
5256 case DRM_FORMAT_YUV420:
5257 case DRM_FORMAT_YVU420:
5258 case DRM_FORMAT_YUV422:
5259 case DRM_FORMAT_YVU422:
5260 case DRM_FORMAT_YUV444:
5261 case DRM_FORMAT_YVU444:
5262 return 3;
5263 case DRM_FORMAT_NV12:
5264 case DRM_FORMAT_NV21:
5265 case DRM_FORMAT_NV16:
5266 case DRM_FORMAT_NV61:
ba623f6a
LP		 5267 case DRM_FORMAT_NV24:
5268 case DRM_FORMAT_NV42:
141670e9
VS		 5269 return 2;
5270 default:
5271 return 1;
5272 }
5273}
5274EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 5275
5276/**
5277 * drm_format_plane_cpp - determine the bytes per pixel value
5278 * @format: pixel format (DRM_FORMAT_*)
5279 * @plane: plane index
5280 *
c8e32cc1 5281 * Returns:
5a86bd55
VS		 5282 * The bytes per pixel value for the specified plane.
5283 */
5284int drm_format_plane_cpp(uint32_t format, int plane)
5285{
5286 unsigned int depth;
5287 int bpp;
5288
5289 if (plane >= drm_format_num_planes(format))
5290 return 0;
5291
5292 switch (format) {
5293 case DRM_FORMAT_YUYV:
5294 case DRM_FORMAT_YVYU:
5295 case DRM_FORMAT_UYVY:
5296 case DRM_FORMAT_VYUY:
5297 return 2;
5298 case DRM_FORMAT_NV12:
5299 case DRM_FORMAT_NV21:
5300 case DRM_FORMAT_NV16:
5301 case DRM_FORMAT_NV61:
ba623f6a
LP		 5302 case DRM_FORMAT_NV24:
5303 case DRM_FORMAT_NV42:
5a86bd55
VS		 5304 return plane ? 2 : 1;
5305 case DRM_FORMAT_YUV410:
5306 case DRM_FORMAT_YVU410:
5307 case DRM_FORMAT_YUV411:
5308 case DRM_FORMAT_YVU411:
5309 case DRM_FORMAT_YUV420:
5310 case DRM_FORMAT_YVU420:
5311 case DRM_FORMAT_YUV422:
5312 case DRM_FORMAT_YVU422:
5313 case DRM_FORMAT_YUV444:
5314 case DRM_FORMAT_YVU444:
5315 return 1;
5316 default:
5317 drm_fb_get_bpp_depth(format, &depth, &bpp);
5318 return bpp >> 3;
5319 }
5320}
5321EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 5322
5323/**
5324 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5325 * @format: pixel format (DRM_FORMAT_*)
5326 *
c8e32cc1 5327 * Returns:
01b68b04
VS		 5328 * The horizontal chroma subsampling factor for the
5329 * specified pixel format.
5330 */
5331int drm_format_horz_chroma_subsampling(uint32_t format)
5332{
5333 switch (format) {
5334 case DRM_FORMAT_YUV411:
5335 case DRM_FORMAT_YVU411:
5336 case DRM_FORMAT_YUV410:
5337 case DRM_FORMAT_YVU410:
5338 return 4;
5339 case DRM_FORMAT_YUYV:
5340 case DRM_FORMAT_YVYU:
5341 case DRM_FORMAT_UYVY:
5342 case DRM_FORMAT_VYUY:
5343 case DRM_FORMAT_NV12:
5344 case DRM_FORMAT_NV21:
5345 case DRM_FORMAT_NV16:
5346 case DRM_FORMAT_NV61:
5347 case DRM_FORMAT_YUV422:
5348 case DRM_FORMAT_YVU422:
5349 case DRM_FORMAT_YUV420:
5350 case DRM_FORMAT_YVU420:
5351 return 2;
5352 default:
5353 return 1;
5354 }
5355}
5356EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5357
5358/**
5359 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5360 * @format: pixel format (DRM_FORMAT_*)
5361 *
c8e32cc1 5362 * Returns:
01b68b04
VS		 5363 * The vertical chroma subsampling factor for the
5364 * specified pixel format.
5365 */
5366int drm_format_vert_chroma_subsampling(uint32_t format)
5367{
5368 switch (format) {
5369 case DRM_FORMAT_YUV410:
5370 case DRM_FORMAT_YVU410:
5371 return 4;
5372 case DRM_FORMAT_YUV420:
5373 case DRM_FORMAT_YVU420:
5374 case DRM_FORMAT_NV12:
5375 case DRM_FORMAT_NV21:
5376 return 2;
5377 default:
5378 return 1;
5379 }
5380}
5381EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3 5382
3c9855f6
VS		 5383/**
5384 * drm_rotation_simplify() - Try to simplify the rotation
5385 * @rotation: Rotation to be simplified
5386 * @supported_rotations: Supported rotations
5387 *
5388 * Attempt to simplify the rotation to a form that is supported.
5389 * Eg. if the hardware supports everything except DRM_REFLECT_X
5390 * one could call this function like this:
5391 *
5392 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5393 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5394 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5395 *
5396 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5397 * transforms the hardware supports, this function may not
5398 * be able to produce a supported transform, so the caller should
5399 * check the result afterwards.
5400 */
5401unsigned int drm_rotation_simplify(unsigned int rotation,
5402 unsigned int supported_rotations)
5403{
5404 if (rotation & ~supported_rotations) {
5405 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5406 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5407 }
5408
5409 return rotation;
5410}
5411EXPORT_SYMBOL(drm_rotation_simplify);
5412
87d24fc3
LP		 5413/**
5414 * drm_mode_config_init - initialize DRM mode_configuration structure
5415 * @dev: DRM device
5416 *
5417 * Initialize @dev's mode_config structure, used for tracking the graphics
5418 * configuration of @dev.
5419 *
5420 * Since this initializes the modeset locks, no locking is possible. Which is no
5421 * problem, since this should happen single threaded at init time. It is the
5422 * driver's problem to ensure this guarantee.
5423 *
5424 */
5425void drm_mode_config_init(struct drm_device *dev)
5426{
5427 mutex_init(&dev->mode_config.mutex);
51fd371b 5428 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5429 mutex_init(&dev->mode_config.idr_mutex);
5430 mutex_init(&dev->mode_config.fb_lock);
5431 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5432 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5433 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5434 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5435 INIT_LIST_HEAD(&dev->mode_config.property_list);
5436 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5437 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5438 idr_init(&dev->mode_config.crtc_idr);
138f9ebb 5439 idr_init(&dev->mode_config.tile_idr);
87d24fc3
LP		 5440
5441 drm_modeset_lock_all(dev);
6b4959f4 5442 drm_mode_create_standard_properties(dev);
87d24fc3
LP		 5443 drm_modeset_unlock_all(dev);
5444
5445 /* Just to be sure */
5446 dev->mode_config.num_fb = 0;
5447 dev->mode_config.num_connector = 0;
5448 dev->mode_config.num_crtc = 0;
5449 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 5450 dev->mode_config.num_overlay_plane = 0;
5451 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 5452}
5453EXPORT_SYMBOL(drm_mode_config_init);
5454
5455/**
5456 * drm_mode_config_cleanup - free up DRM mode_config info
5457 * @dev: DRM device
5458 *
5459 * Free up all the connectors and CRTCs associated with this DRM device, then
5460 * free up the framebuffers and associated buffer objects.
5461 *
5462 * Note that since this /should/ happen single-threaded at driver/device
5463 * teardown time, no locking is required. It's the driver's job to ensure that
5464 * this guarantee actually holds true.
5465 *
5466 * FIXME: cleanup any dangling user buffer objects too
5467 */
5468void drm_mode_config_cleanup(struct drm_device *dev)
5469{
5470 struct drm_connector *connector, *ot;
5471 struct drm_crtc *crtc, *ct;
5472 struct drm_encoder *encoder, *enct;
5473 struct drm_framebuffer *fb, *fbt;
5474 struct drm_property *property, *pt;
5475 struct drm_property_blob *blob, *bt;
5476 struct drm_plane *plane, *plt;
5477
5478 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5479 head) {
5480 encoder->funcs->destroy(encoder);
5481 }
5482
5483 list_for_each_entry_safe(connector, ot,
5484 &dev->mode_config.connector_list, head) {
5485 connector->funcs->destroy(connector);
5486 }
5487
5488 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5489 head) {
5490 drm_property_destroy(dev, property);
5491 }
5492
5493 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5494 head) {
5495 drm_property_destroy_blob(dev, blob);
5496 }
5497
5498 /*
5499 * Single-threaded teardown context, so it's not required to grab the
5500 * fb_lock to protect against concurrent fb_list access. Contrary, it
5501 * would actually deadlock with the drm_framebuffer_cleanup function.
5502 *
5503 * Also, if there are any framebuffers left, that's a driver leak now,
5504 * so politely WARN about this.
5505 */
5506 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5507 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5508 drm_framebuffer_remove(fb);
5509 }
5510
5511 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5512 head) {
5513 plane->funcs->destroy(plane);
5514 }
5515
5516 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5517 crtc->funcs->destroy(crtc);
5518 }
5519
138f9ebb 5520 idr_destroy(&dev->mode_config.tile_idr);
87d24fc3 5521 idr_destroy(&dev->mode_config.crtc_idr);
51fd371b 5522 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5523}
5524EXPORT_SYMBOL(drm_mode_config_cleanup);
c1df5f3c
VS		 5525
5526struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5527 unsigned int supported_rotations)
5528{
5529 static const struct drm_prop_enum_list props[] = {
5530 { DRM_ROTATE_0, "rotate-0" },
5531 { DRM_ROTATE_90, "rotate-90" },
5532 { DRM_ROTATE_180, "rotate-180" },
5533 { DRM_ROTATE_270, "rotate-270" },
5534 { DRM_REFLECT_X, "reflect-x" },
5535 { DRM_REFLECT_Y, "reflect-y" },
5536 };
5537
5538 return drm_property_create_bitmask(dev, 0, "rotation",
5539 props, ARRAY_SIZE(props),
5540 supported_rotations);
5541}
5542EXPORT_SYMBOL(drm_mode_create_rotation_property);
138f9ebb
DA		 5543
5544/**
5545 * DOC: Tile group
5546 *
5547 * Tile groups are used to represent tiled monitors with a unique
5548 * integer identifier. Tiled monitors using DisplayID v1.3 have
5549 * a unique 8-byte handle, we store this in a tile group, so we
5550 * have a common identifier for all tiles in a monitor group.
5551 */
5552static void drm_tile_group_free(struct kref *kref)
5553{
5554 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5555 struct drm_device *dev = tg->dev;
5556 mutex_lock(&dev->mode_config.idr_mutex);
5557 idr_remove(&dev->mode_config.tile_idr, tg->id);
5558 mutex_unlock(&dev->mode_config.idr_mutex);
5559 kfree(tg);
5560}
5561
5562/**
5563 * drm_mode_put_tile_group - drop a reference to a tile group.
5564 * @dev: DRM device
5565 * @tg: tile group to drop reference to.
5566 *
5567 * drop reference to tile group and free if 0.
5568 */
5569void drm_mode_put_tile_group(struct drm_device *dev,
5570 struct drm_tile_group *tg)
5571{
5572 kref_put(&tg->refcount, drm_tile_group_free);
5573}
5574
5575/**
5576 * drm_mode_get_tile_group - get a reference to an existing tile group
5577 * @dev: DRM device
5578 * @topology: 8-bytes unique per monitor.
5579 *
5580 * Use the unique bytes to get a reference to an existing tile group.
5581 *
5582 * RETURNS:
5583 * tile group or NULL if not found.
5584 */
5585struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5586 char topology[8])
5587{
5588 struct drm_tile_group *tg;
5589 int id;
5590 mutex_lock(&dev->mode_config.idr_mutex);
5591 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5592 if (!memcmp(tg->group_data, topology, 8)) {
5593 if (!kref_get_unless_zero(&tg->refcount))
5594 tg = NULL;
5595 mutex_unlock(&dev->mode_config.idr_mutex);
5596 return tg;
5597 }
5598 }
5599 mutex_unlock(&dev->mode_config.idr_mutex);
5600 return NULL;
5601}
81ddd1bc 5602EXPORT_SYMBOL(drm_mode_get_tile_group);
138f9ebb
DA		 5603
5604/**
5605 * drm_mode_create_tile_group - create a tile group from a displayid description
5606 * @dev: DRM device
5607 * @topology: 8-bytes unique per monitor.
5608 *
5609 * Create a tile group for the unique monitor, and get a unique
5610 * identifier for the tile group.
5611 *
5612 * RETURNS:
5613 * new tile group or error.
5614 */
5615struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5616 char topology[8])
5617{
5618 struct drm_tile_group *tg;
5619 int ret;
5620
5621 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5622 if (!tg)
5623 return ERR_PTR(-ENOMEM);
5624
5625 kref_init(&tg->refcount);
5626 memcpy(tg->group_data, topology, 8);
5627 tg->dev = dev;
5628
5629 mutex_lock(&dev->mode_config.idr_mutex);
5630 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5631 if (ret >= 0) {
5632 tg->id = ret;
5633 } else {
5634 kfree(tg);
5635 tg = ERR_PTR(ret);
5636 }
5637
5638 mutex_unlock(&dev->mode_config.idr_mutex);
5639 return tg;
5640}
81ddd1bc 5641EXPORT_SYMBOL(drm_mode_create_tile_group);
Linux 6.x block layer and io_uring tree(s)