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Merge tag 'drm-intel-next-2015-01-17' of git://anongit.freedesktop.org/drm-intel...
[deliverable/linux.git] / drivers / gpu / drm / drm_crtc.c
CommitLineData
f453ba04
DA		 1/*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
6ba6d03e 32#include <linux/ctype.h>
f453ba04 33#include <linux/list.h>
5a0e3ad6 34#include <linux/slab.h>
2d1a8a48 35#include <linux/export.h>
760285e7
DH		 36#include <drm/drmP.h>
37#include <drm/drm_crtc.h>
38#include <drm/drm_edid.h>
39#include <drm/drm_fourcc.h>
51fd371b 40#include <drm/drm_modeset_lock.h>
88a48e29 41#include <drm/drm_atomic.h>
f453ba04 42
8bd441b2 43#include "drm_crtc_internal.h"
67d0ec4e 44#include "drm_internal.h"
8bd441b2 45
c394c2b0
MR		 46static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
47 struct drm_mode_fb_cmd2 *r,
48 struct drm_file *file_priv);
49
f453ba04
DA		 50/* Avoid boilerplate. I'm tired of typing. */
51#define DRM_ENUM_NAME_FN(fnname, list) \
d20d3174 52 const char *fnname(int val) \
f453ba04
DA		 53 { \
54 int i; \
55 for (i = 0; i < ARRAY_SIZE(list); i++) { \
56 if (list[i].type == val) \
57 return list[i].name; \
58 } \
59 return "(unknown)"; \
60 }
61
62/*
63 * Global properties
64 */
4dfd909f
TR		 65static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
66 { DRM_MODE_DPMS_ON, "On" },
f453ba04
DA		 67 { DRM_MODE_DPMS_STANDBY, "Standby" },
68 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
69 { DRM_MODE_DPMS_OFF, "Off" }
70};
71
72DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
73
4dfd909f 74static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
9922ab5a
RC		 75 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
78};
79
f453ba04
DA		 80/*
81 * Optional properties
82 */
4dfd909f 83static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
53bd8389
JB		 84 { DRM_MODE_SCALE_NONE, "None" },
85 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
86 { DRM_MODE_SCALE_CENTER, "Center" },
87 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 88};
89
ff587e45
VK		 90static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
91 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
92 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
93 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
94};
95
f453ba04
DA		 96/*
97 * Non-global properties, but "required" for certain connectors.
98 */
4dfd909f 99static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
f453ba04
DA		 100 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
101 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
102 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
103};
104
105DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
106
4dfd909f 107static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
f453ba04
DA		 108 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
109 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
110 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
111};
112
113DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
114 drm_dvi_i_subconnector_enum_list)
115
4dfd909f 116static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
f453ba04
DA		 117 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
118 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
119 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 121 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 122};
123
124DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
125
4dfd909f 126static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
f453ba04
DA		 127 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
128 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
129 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 131 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 132};
133
134DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
135 drm_tv_subconnector_enum_list)
136
d20d3174 137static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
884840aa
JB		 138 { DRM_MODE_DIRTY_OFF, "Off" },
139 { DRM_MODE_DIRTY_ON, "On" },
140 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
141};
142
f453ba04
DA		 143struct drm_conn_prop_enum_list {
144 int type;
d20d3174 145 const char *name;
b21e3afe 146 struct ida ida;
f453ba04
DA		 147};
148
149/*
150 * Connector and encoder types.
151 */
4dfd909f
TR		 152static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
153 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
b21e3afe
IM		 154 { DRM_MODE_CONNECTOR_VGA, "VGA" },
155 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
156 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
157 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
158 { DRM_MODE_CONNECTOR_Composite, "Composite" },
159 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
160 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
161 { DRM_MODE_CONNECTOR_Component, "Component" },
162 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
163 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
164 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
165 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
166 { DRM_MODE_CONNECTOR_TV, "TV" },
167 { DRM_MODE_CONNECTOR_eDP, "eDP" },
168 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
b8923273 169 { DRM_MODE_CONNECTOR_DSI, "DSI" },
f453ba04
DA		 170};
171
4dfd909f
TR		 172static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
173 { DRM_MODE_ENCODER_NONE, "None" },
f453ba04
DA		 174 { DRM_MODE_ENCODER_DAC, "DAC" },
175 { DRM_MODE_ENCODER_TMDS, "TMDS" },
176 { DRM_MODE_ENCODER_LVDS, "LVDS" },
177 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 178 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
b8923273 179 { DRM_MODE_ENCODER_DSI, "DSI" },
182407a6 180 { DRM_MODE_ENCODER_DPMST, "DP MST" },
f453ba04
DA		 181};
182
4dfd909f 183static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
ac1bb36c
JB		 184 { SubPixelUnknown, "Unknown" },
185 { SubPixelHorizontalRGB, "Horizontal RGB" },
186 { SubPixelHorizontalBGR, "Horizontal BGR" },
187 { SubPixelVerticalRGB, "Vertical RGB" },
188 { SubPixelVerticalBGR, "Vertical BGR" },
189 { SubPixelNone, "None" },
190};
191
b21e3afe
IM		 192void drm_connector_ida_init(void)
193{
194 int i;
195
196 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
197 ida_init(&drm_connector_enum_list[i].ida);
198}
199
200void drm_connector_ida_destroy(void)
201{
202 int i;
203
204 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
205 ida_destroy(&drm_connector_enum_list[i].ida);
206}
207
c8e32cc1
DV		 208/**
209 * drm_get_connector_status_name - return a string for connector status
210 * @status: connector status to compute name of
211 *
212 * In contrast to the other drm_get_*_name functions this one here returns a
213 * const pointer and hence is threadsafe.
214 */
d20d3174 215const char *drm_get_connector_status_name(enum drm_connector_status status)
f453ba04
DA		 216{
217 if (status == connector_status_connected)
218 return "connected";
219 else if (status == connector_status_disconnected)
220 return "disconnected";
221 else
222 return "unknown";
223}
ed7951dc 224EXPORT_SYMBOL(drm_get_connector_status_name);
f453ba04 225
ac1bb36c
JB		 226/**
227 * drm_get_subpixel_order_name - return a string for a given subpixel enum
228 * @order: enum of subpixel_order
229 *
230 * Note you could abuse this and return something out of bounds, but that
231 * would be a caller error. No unscrubbed user data should make it here.
232 */
233const char *drm_get_subpixel_order_name(enum subpixel_order order)
234{
235 return drm_subpixel_enum_list[order].name;
236}
237EXPORT_SYMBOL(drm_get_subpixel_order_name);
238
6ba6d03e
VS		 239static char printable_char(int c)
240{
241 return isascii(c) && isprint(c) ? c : '?';
242}
243
c8e32cc1
DV		 244/**
245 * drm_get_format_name - return a string for drm fourcc format
246 * @format: format to compute name of
247 *
248 * Note that the buffer used by this function is globally shared and owned by
249 * the function itself.
250 *
251 * FIXME: This isn't really multithreading safe.
252 */
d20d3174 253const char *drm_get_format_name(uint32_t format)
6ba6d03e
VS		 254{
255 static char buf[32];
256
257 snprintf(buf, sizeof(buf),
258 "%c%c%c%c %s-endian (0x%08x)",
259 printable_char(format & 0xff),
260 printable_char((format >> 8) & 0xff),
261 printable_char((format >> 16) & 0xff),
262 printable_char((format >> 24) & 0x7f),
263 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
264 format);
265
266 return buf;
267}
268EXPORT_SYMBOL(drm_get_format_name);
269
2ee39452
DA		 270/*
271 * Internal function to assign a slot in the object idr and optionally
272 * register the object into the idr.
273 */
274static int drm_mode_object_get_reg(struct drm_device *dev,
275 struct drm_mode_object *obj,
276 uint32_t obj_type,
277 bool register_obj)
278{
279 int ret;
280
281 mutex_lock(&dev->mode_config.idr_mutex);
282 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
283 if (ret >= 0) {
284 /*
285 * Set up the object linking under the protection of the idr
286 * lock so that other users can't see inconsistent state.
287 */
288 obj->id = ret;
289 obj->type = obj_type;
290 }
291 mutex_unlock(&dev->mode_config.idr_mutex);
292
293 return ret < 0 ? ret : 0;
294}
295
f453ba04 296/**
065a50ed 297 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 298 * @dev: DRM device
065a50ed
DV		 299 * @obj: object pointer, used to generate unique ID
300 * @obj_type: object type
f453ba04 301 *
f453ba04 302 * Create a unique identifier based on @ptr in @dev's identifier space. Used
c8e32cc1
DV		 303 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
304 * modeset identifiers are _not_ reference counted. Hence don't use this for
305 * reference counted modeset objects like framebuffers.
f453ba04 306 *
c8e32cc1 307 * Returns:
f453ba04
DA		 308 * New unique (relative to other objects in @dev) integer identifier for the
309 * object.
310 */
8bd441b2
DV		 311int drm_mode_object_get(struct drm_device *dev,
312 struct drm_mode_object *obj, uint32_t obj_type)
f453ba04 313{
2ee39452
DA		 314 return drm_mode_object_get_reg(dev, obj, obj_type, true);
315}
f453ba04 316
2ee39452
DA		 317static void drm_mode_object_register(struct drm_device *dev,
318 struct drm_mode_object *obj)
319{
ad2563c2 320 mutex_lock(&dev->mode_config.idr_mutex);
2ee39452 321 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
ad2563c2 322 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 323}
324
325/**
065a50ed 326 * drm_mode_object_put - free a modeset identifer
f453ba04 327 * @dev: DRM device
065a50ed 328 * @object: object to free
f453ba04 329 *
c8e32cc1
DV		 330 * Free @id from @dev's unique identifier pool. Note that despite the _get
331 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
332 * for reference counted modeset objects like framebuffers.
f453ba04 333 */
8bd441b2
DV		 334void drm_mode_object_put(struct drm_device *dev,
335 struct drm_mode_object *object)
f453ba04 336{
ad2563c2 337 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 338 idr_remove(&dev->mode_config.crtc_idr, object->id);
ad2563c2 339 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 340}
341
98f75de4
RC		 342static struct drm_mode_object *_object_find(struct drm_device *dev,
343 uint32_t id, uint32_t type)
344{
345 struct drm_mode_object *obj = NULL;
346
347 mutex_lock(&dev->mode_config.idr_mutex);
348 obj = idr_find(&dev->mode_config.crtc_idr, id);
168c02ec
DV		 349 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
350 obj = NULL;
351 if (obj && obj->id != id)
352 obj = NULL;
353 /* don't leak out unref'd fb's */
354 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
98f75de4
RC		 355 obj = NULL;
356 mutex_unlock(&dev->mode_config.idr_mutex);
357
358 return obj;
359}
360
786b99ed
DV		 361/**
362 * drm_mode_object_find - look up a drm object with static lifetime
363 * @dev: drm device
364 * @id: id of the mode object
365 * @type: type of the mode object
366 *
367 * Note that framebuffers cannot be looked up with this functions - since those
98f75de4
RC		 368 * are reference counted, they need special treatment. Even with
369 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
370 * rather than WARN_ON()).
786b99ed 371 */
7a9c9060
DV		 372struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
373 uint32_t id, uint32_t type)
f453ba04 374{
ad2563c2 375 struct drm_mode_object *obj = NULL;
f453ba04 376
786b99ed
DV		 377 /* Framebuffers are reference counted and need their own lookup
378 * function.*/
379 WARN_ON(type == DRM_MODE_OBJECT_FB);
98f75de4 380 obj = _object_find(dev, id, type);
f453ba04
DA		 381 return obj;
382}
383EXPORT_SYMBOL(drm_mode_object_find);
384
f453ba04
DA		 385/**
386 * drm_framebuffer_init - initialize a framebuffer
387 * @dev: DRM device
065a50ed
DV		 388 * @fb: framebuffer to be initialized
389 * @funcs: ... with these functions
f453ba04 390 *
f453ba04
DA		 391 * Allocates an ID for the framebuffer's parent mode object, sets its mode
392 * functions & device file and adds it to the master fd list.
393 *
4b096ac1
DV		 394 * IMPORTANT:
395 * This functions publishes the fb and makes it available for concurrent access
396 * by other users. Which means by this point the fb _must_ be fully set up -
397 * since all the fb attributes are invariant over its lifetime, no further
398 * locking but only correct reference counting is required.
399 *
c8e32cc1 400 * Returns:
af901ca1 401 * Zero on success, error code on failure.
f453ba04
DA		 402 */
403int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
404 const struct drm_framebuffer_funcs *funcs)
405{
406 int ret;
407
4b096ac1 408 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e 409 kref_init(&fb->refcount);
4b096ac1
DV		 410 INIT_LIST_HEAD(&fb->filp_head);
411 fb->dev = dev;
412 fb->funcs = funcs;
f7eff60e 413
f453ba04 414 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
6bfc56aa 415 if (ret)
4b096ac1 416 goto out;
f453ba04 417
f453ba04
DA		 418 dev->mode_config.num_fb++;
419 list_add(&fb->head, &dev->mode_config.fb_list);
4b096ac1
DV		 420out:
421 mutex_unlock(&dev->mode_config.fb_lock);
f453ba04
DA		 422
423 return 0;
424}
425EXPORT_SYMBOL(drm_framebuffer_init);
426
83f45fc3
DV		 427/* dev->mode_config.fb_lock must be held! */
428static void __drm_framebuffer_unregister(struct drm_device *dev,
429 struct drm_framebuffer *fb)
430{
431 mutex_lock(&dev->mode_config.idr_mutex);
432 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
433 mutex_unlock(&dev->mode_config.idr_mutex);
434
435 fb->base.id = 0;
436}
437
f7eff60e
RC		 438static void drm_framebuffer_free(struct kref *kref)
439{
440 struct drm_framebuffer *fb =
441 container_of(kref, struct drm_framebuffer, refcount);
83f45fc3
DV		 442 struct drm_device *dev = fb->dev;
443
444 /*
445 * The lookup idr holds a weak reference, which has not necessarily been
446 * removed at this point. Check for that.
447 */
448 mutex_lock(&dev->mode_config.fb_lock);
449 if (fb->base.id) {
450 /* Mark fb as reaped and drop idr ref. */
451 __drm_framebuffer_unregister(dev, fb);
452 }
453 mutex_unlock(&dev->mode_config.fb_lock);
454
f7eff60e
RC		 455 fb->funcs->destroy(fb);
456}
457
2b677e8c
DV		 458static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
459 uint32_t id)
460{
461 struct drm_mode_object *obj = NULL;
462 struct drm_framebuffer *fb;
463
464 mutex_lock(&dev->mode_config.idr_mutex);
465 obj = idr_find(&dev->mode_config.crtc_idr, id);
466 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
467 fb = NULL;
468 else
469 fb = obj_to_fb(obj);
470 mutex_unlock(&dev->mode_config.idr_mutex);
471
472 return fb;
473}
474
786b99ed
DV		 475/**
476 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
477 * @dev: drm device
478 * @id: id of the fb object
479 *
480 * If successful, this grabs an additional reference to the framebuffer -
481 * callers need to make sure to eventually unreference the returned framebuffer
c8e32cc1 482 * again, using @drm_framebuffer_unreference.
786b99ed
DV		 483 */
484struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
485 uint32_t id)
486{
786b99ed
DV		 487 struct drm_framebuffer *fb;
488
489 mutex_lock(&dev->mode_config.fb_lock);
2b677e8c 490 fb = __drm_framebuffer_lookup(dev, id);
83f45fc3
DV		 491 if (fb) {
492 if (!kref_get_unless_zero(&fb->refcount))
493 fb = NULL;
494 }
786b99ed
DV		 495 mutex_unlock(&dev->mode_config.fb_lock);
496
497 return fb;
498}
499EXPORT_SYMBOL(drm_framebuffer_lookup);
500
f7eff60e
RC		 501/**
502 * drm_framebuffer_unreference - unref a framebuffer
065a50ed
DV		 503 * @fb: framebuffer to unref
504 *
505 * This functions decrements the fb's refcount and frees it if it drops to zero.
f7eff60e
RC		 506 */
507void drm_framebuffer_unreference(struct drm_framebuffer *fb)
508{
8291272a 509 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 510 kref_put(&fb->refcount, drm_framebuffer_free);
511}
512EXPORT_SYMBOL(drm_framebuffer_unreference);
513
514/**
515 * drm_framebuffer_reference - incr the fb refcnt
065a50ed 516 * @fb: framebuffer
c8e32cc1
DV		 517 *
518 * This functions increments the fb's refcount.
f7eff60e
RC		 519 */
520void drm_framebuffer_reference(struct drm_framebuffer *fb)
521{
8291272a 522 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 523 kref_get(&fb->refcount);
524}
525EXPORT_SYMBOL(drm_framebuffer_reference);
526
2b677e8c
DV		 527static void drm_framebuffer_free_bug(struct kref *kref)
528{
529 BUG();
530}
531
6c2a7532
DV		 532static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
533{
8291272a 534 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
6c2a7532
DV		 535 kref_put(&fb->refcount, drm_framebuffer_free_bug);
536}
537
36206361
DV		 538/**
539 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
540 * @fb: fb to unregister
541 *
542 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
543 * those used for fbdev. Note that the caller must hold a reference of it's own,
544 * i.e. the object may not be destroyed through this call (since it'll lead to a
545 * locking inversion).
546 */
547void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
548{
2b677e8c
DV		 549 struct drm_device *dev = fb->dev;
550
551 mutex_lock(&dev->mode_config.fb_lock);
552 /* Mark fb as reaped and drop idr ref. */
553 __drm_framebuffer_unregister(dev, fb);
554 mutex_unlock(&dev->mode_config.fb_lock);
36206361
DV		 555}
556EXPORT_SYMBOL(drm_framebuffer_unregister_private);
557
f453ba04
DA		 558/**
559 * drm_framebuffer_cleanup - remove a framebuffer object
560 * @fb: framebuffer to remove
561 *
c8e32cc1
DV		 562 * Cleanup framebuffer. This function is intended to be used from the drivers
563 * ->destroy callback. It can also be used to clean up driver private
564 * framebuffers embedded into a larger structure.
36206361
DV		 565 *
566 * Note that this function does not remove the fb from active usuage - if it is
567 * still used anywhere, hilarity can ensue since userspace could call getfb on
568 * the id and get back -EINVAL. Obviously no concern at driver unload time.
569 *
570 * Also, the framebuffer will not be removed from the lookup idr - for
571 * user-created framebuffers this will happen in in the rmfb ioctl. For
572 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
573 * drm_framebuffer_unregister_private.
f453ba04
DA		 574 */
575void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
f7eff60e
RC		 576{
577 struct drm_device *dev = fb->dev;
8faf6b18 578
4b096ac1 579 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e
RC		 580 list_del(&fb->head);
581 dev->mode_config.num_fb--;
4b096ac1 582 mutex_unlock(&dev->mode_config.fb_lock);
f7eff60e
RC		 583}
584EXPORT_SYMBOL(drm_framebuffer_cleanup);
585
586/**
587 * drm_framebuffer_remove - remove and unreference a framebuffer object
588 * @fb: framebuffer to remove
589 *
f7eff60e 590 * Scans all the CRTCs and planes in @dev's mode_config. If they're
36206361 591 * using @fb, removes it, setting it to NULL. Then drops the reference to the
b62584e3
DV		 592 * passed-in framebuffer. Might take the modeset locks.
593 *
594 * Note that this function optimizes the cleanup away if the caller holds the
595 * last reference to the framebuffer. It is also guaranteed to not take the
596 * modeset locks in this case.
f7eff60e
RC		 597 */
598void drm_framebuffer_remove(struct drm_framebuffer *fb)
f453ba04
DA		 599{
600 struct drm_device *dev = fb->dev;
601 struct drm_crtc *crtc;
8cf5c917 602 struct drm_plane *plane;
5ef5f72f
DA		 603 struct drm_mode_set set;
604 int ret;
f453ba04 605
4b096ac1 606 WARN_ON(!list_empty(&fb->filp_head));
8faf6b18 607
b62584e3
DV		 608 /*
609 * drm ABI mandates that we remove any deleted framebuffers from active
610 * useage. But since most sane clients only remove framebuffers they no
611 * longer need, try to optimize this away.
612 *
613 * Since we're holding a reference ourselves, observing a refcount of 1
614 * means that we're the last holder and can skip it. Also, the refcount
615 * can never increase from 1 again, so we don't need any barriers or
616 * locks.
617 *
618 * Note that userspace could try to race with use and instate a new
619 * usage _after_ we've cleared all current ones. End result will be an
620 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
621 * in this manner.
622 */
623 if (atomic_read(&fb->refcount.refcount) > 1) {
624 drm_modeset_lock_all(dev);
625 /* remove from any CRTC */
626 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
f4510a27 627 if (crtc->primary->fb == fb) {
b62584e3
DV		 628 /* should turn off the crtc */
629 memset(&set, 0, sizeof(struct drm_mode_set));
630 set.crtc = crtc;
631 set.fb = NULL;
632 ret = drm_mode_set_config_internal(&set);
633 if (ret)
634 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
635 }
5ef5f72f 636 }
f453ba04 637
b62584e3 638 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
9125e618
VS		 639 if (plane->fb == fb)
640 drm_plane_force_disable(plane);
8cf5c917 641 }
b62584e3 642 drm_modeset_unlock_all(dev);
8cf5c917
JB		 643 }
644
f7eff60e 645 drm_framebuffer_unreference(fb);
f453ba04 646}
f7eff60e 647EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04 648
51fd371b
RC		 649DEFINE_WW_CLASS(crtc_ww_class);
650
f453ba04 651/**
e13161af
MR		 652 * drm_crtc_init_with_planes - Initialise a new CRTC object with
653 * specified primary and cursor planes.
f453ba04
DA		 654 * @dev: DRM device
655 * @crtc: CRTC object to init
e13161af
MR		 656 * @primary: Primary plane for CRTC
657 * @cursor: Cursor plane for CRTC
f453ba04
DA		 658 * @funcs: callbacks for the new CRTC
659 *
ad6f5c34 660 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 661 *
c8e32cc1 662 * Returns:
6bfc56aa 663 * Zero on success, error code on failure.
f453ba04 664 */
e13161af
MR		 665int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
666 struct drm_plane *primary,
fc1d3e44 667 struct drm_plane *cursor,
e13161af 668 const struct drm_crtc_funcs *funcs)
f453ba04 669{
51fd371b 670 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 671 int ret;
672
f453ba04
DA		 673 crtc->dev = dev;
674 crtc->funcs = funcs;
7c80e128 675 crtc->invert_dimensions = false;
f453ba04 676
51fd371b 677 drm_modeset_lock_init(&crtc->mutex);
6bfc56aa
VS		 678 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
679 if (ret)
baf698b0 680 return ret;
f453ba04 681
bffd9de0
PZ		 682 crtc->base.properties = &crtc->properties;
683
51fd371b
RC		 684 list_add_tail(&crtc->head, &config->crtc_list);
685 config->num_crtc++;
6bfc56aa 686
e13161af 687 crtc->primary = primary;
fc1d3e44 688 crtc->cursor = cursor;
e13161af
MR		 689 if (primary)
690 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
fc1d3e44
MR		 691 if (cursor)
692 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
e13161af 693
baf698b0 694 return 0;
f453ba04 695}
e13161af 696EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 697
698/**
ad6f5c34 699 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 700 * @crtc: CRTC to cleanup
701 *
ad6f5c34
VS		 702 * This function cleans up @crtc and removes it from the DRM mode setting
703 * core. Note that the function does *not* free the crtc structure itself,
704 * this is the responsibility of the caller.
f453ba04
DA		 705 */
706void drm_crtc_cleanup(struct drm_crtc *crtc)
707{
708 struct drm_device *dev = crtc->dev;
709
9e1c156f
SK		 710 kfree(crtc->gamma_store);
711 crtc->gamma_store = NULL;
f453ba04 712
51fd371b
RC		 713 drm_modeset_lock_fini(&crtc->mutex);
714
f453ba04
DA		 715 drm_mode_object_put(dev, &crtc->base);
716 list_del(&crtc->head);
717 dev->mode_config.num_crtc--;
3009c037
TR		 718
719 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
720 if (crtc->state && crtc->funcs->atomic_destroy_state)
721 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
a18c0af1
TR		 722
723 memset(crtc, 0, sizeof(*crtc));
f453ba04
DA		 724}
725EXPORT_SYMBOL(drm_crtc_cleanup);
726
db5f7a6e
RK		 727/**
728 * drm_crtc_index - find the index of a registered CRTC
729 * @crtc: CRTC to find index for
730 *
731 * Given a registered CRTC, return the index of that CRTC within a DRM
732 * device's list of CRTCs.
733 */
734unsigned int drm_crtc_index(struct drm_crtc *crtc)
735{
736 unsigned int index = 0;
737 struct drm_crtc *tmp;
738
739 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
740 if (tmp == crtc)
741 return index;
742
743 index++;
744 }
745
746 BUG();
747}
748EXPORT_SYMBOL(drm_crtc_index);
749
86f422d5 750/*
f453ba04
DA		 751 * drm_mode_remove - remove and free a mode
752 * @connector: connector list to modify
753 * @mode: mode to remove
754 *
f453ba04
DA		 755 * Remove @mode from @connector's mode list, then free it.
756 */
86f422d5
LD		 757static void drm_mode_remove(struct drm_connector *connector,
758 struct drm_display_mode *mode)
f453ba04
DA		 759{
760 list_del(&mode->head);
554f1d78 761 drm_mode_destroy(connector->dev, mode);
f453ba04 762}
f453ba04 763
b5571e9d
BB		 764/**
765 * drm_display_info_set_bus_formats - set the supported bus formats
766 * @info: display info to store bus formats in
767 * @fmts: array containing the supported bus formats
768 * @nfmts: the number of entries in the fmts array
769 *
770 * Store the supported bus formats in display info structure.
771 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
772 * a full list of available formats.
773 */
774int drm_display_info_set_bus_formats(struct drm_display_info *info,
775 const u32 *formats,
776 unsigned int num_formats)
777{
778 u32 *fmts = NULL;
779
780 if (!formats && num_formats)
781 return -EINVAL;
782
783 if (formats && num_formats) {
784 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
785 GFP_KERNEL);
786 if (!formats)
787 return -ENOMEM;
788 }
789
790 kfree(info->bus_formats);
791 info->bus_formats = fmts;
792 info->num_bus_formats = num_formats;
793
794 return 0;
795}
796EXPORT_SYMBOL(drm_display_info_set_bus_formats);
797
eaf99c74
CW		 798/**
799 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
800 * @connector: connector to quwery
eaf99c74
CW		 801 *
802 * The kernel supports per-connector configration of its consoles through
803 * use of the video= parameter. This function parses that option and
804 * extracts the user's specified mode (or enable/disable status) for a
805 * particular connector. This is typically only used during the early fbdev
806 * setup.
807 */
808static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
809{
810 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
811 char *option = NULL;
812
813 if (fb_get_options(connector->name, &option))
814 return;
815
816 if (!drm_mode_parse_command_line_for_connector(option,
817 connector,
818 mode))
819 return;
820
821 if (mode->force) {
822 const char *s;
823
824 switch (mode->force) {
825 case DRM_FORCE_OFF:
826 s = "OFF";
827 break;
828 case DRM_FORCE_ON_DIGITAL:
829 s = "ON - dig";
830 break;
831 default:
832 case DRM_FORCE_ON:
833 s = "ON";
834 break;
835 }
836
837 DRM_INFO("forcing %s connector %s\n", connector->name, s);
838 connector->force = mode->force;
839 }
840
841 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
842 connector->name,
843 mode->xres, mode->yres,
844 mode->refresh_specified ? mode->refresh : 60,
845 mode->rb ? " reduced blanking" : "",
846 mode->margins ? " with margins" : "",
847 mode->interlace ? " interlaced" : "");
848}
849
f453ba04
DA		 850/**
851 * drm_connector_init - Init a preallocated connector
852 * @dev: DRM device
853 * @connector: the connector to init
854 * @funcs: callbacks for this connector
065a50ed 855 * @connector_type: user visible type of the connector
f453ba04 856 *
f453ba04
DA		 857 * Initialises a preallocated connector. Connectors should be
858 * subclassed as part of driver connector objects.
6bfc56aa 859 *
c8e32cc1 860 * Returns:
6bfc56aa 861 * Zero on success, error code on failure.
f453ba04 862 */
6bfc56aa
VS		 863int drm_connector_init(struct drm_device *dev,
864 struct drm_connector *connector,
865 const struct drm_connector_funcs *funcs,
866 int connector_type)
f453ba04 867{
ae16c597 868 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa 869 int ret;
b21e3afe
IM		 870 struct ida *connector_ida =
871 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 872
84849903 873 drm_modeset_lock_all(dev);
f453ba04 874
2ee39452 875 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
6bfc56aa 876 if (ret)
2abdd313 877 goto out_unlock;
6bfc56aa 878
7e3bdf4a 879 connector->base.properties = &connector->properties;
f453ba04
DA		 880 connector->dev = dev;
881 connector->funcs = funcs;
f453ba04
DA		 882 connector->connector_type = connector_type;
883 connector->connector_type_id =
b21e3afe
IM		 884 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
885 if (connector->connector_type_id < 0) {
886 ret = connector->connector_type_id;
2abdd313 887 goto out_put;
b21e3afe 888 }
2abdd313
JN		 889 connector->name =
890 kasprintf(GFP_KERNEL, "%s-%d",
891 drm_connector_enum_list[connector_type].name,
892 connector->connector_type_id);
893 if (!connector->name) {
894 ret = -ENOMEM;
895 goto out_put;
896 }
897
f453ba04
DA		 898 INIT_LIST_HEAD(&connector->probed_modes);
899 INIT_LIST_HEAD(&connector->modes);
900 connector->edid_blob_ptr = NULL;
5e2cb2f6 901 connector->status = connector_status_unknown;
f453ba04 902
eaf99c74
CW		 903 drm_connector_get_cmdline_mode(connector);
904
c7eb76f4
DV		 905 /* We should add connectors at the end to avoid upsetting the connector
906 * index too much. */
ae16c597
RC		 907 list_add_tail(&connector->head, &config->connector_list);
908 config->num_connector++;
f453ba04 909
a7331e5c 910 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 911 drm_object_attach_property(&connector->base,
ae16c597 912 config->edid_property,
a7331e5c 913 0);
f453ba04 914
58495563 915 drm_object_attach_property(&connector->base,
ae16c597
RC		 916 config->dpms_property, 0);
917
918 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
919 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
920 }
f453ba04 921
30f65707
TW		 922 connector->debugfs_entry = NULL;
923
2abdd313
JN		 924out_put:
925 if (ret)
926 drm_mode_object_put(dev, &connector->base);
927
928out_unlock:
84849903 929 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 930
931 return ret;
f453ba04
DA		 932}
933EXPORT_SYMBOL(drm_connector_init);
934
935/**
936 * drm_connector_cleanup - cleans up an initialised connector
937 * @connector: connector to cleanup
938 *
f453ba04
DA		 939 * Cleans up the connector but doesn't free the object.
940 */
941void drm_connector_cleanup(struct drm_connector *connector)
942{
943 struct drm_device *dev = connector->dev;
944 struct drm_display_mode *mode, *t;
945
40d9b043
DA		 946 if (connector->tile_group) {
947 drm_mode_put_tile_group(dev, connector->tile_group);
948 connector->tile_group = NULL;
949 }
950
f453ba04
DA		 951 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
952 drm_mode_remove(connector, mode);
953
954 list_for_each_entry_safe(mode, t, &connector->modes, head)
955 drm_mode_remove(connector, mode);
956
b21e3afe
IM		 957 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
958 connector->connector_type_id);
959
b5571e9d 960 kfree(connector->display_info.bus_formats);
f453ba04 961 drm_mode_object_put(dev, &connector->base);
2abdd313
JN		 962 kfree(connector->name);
963 connector->name = NULL;
f453ba04 964 list_del(&connector->head);
6380c509 965 dev->mode_config.num_connector--;
3009c037
TR		 966
967 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
968 if (connector->state && connector->funcs->atomic_destroy_state)
969 connector->funcs->atomic_destroy_state(connector,
970 connector->state);
a18c0af1
TR		 971
972 memset(connector, 0, sizeof(*connector));
f453ba04
DA		 973}
974EXPORT_SYMBOL(drm_connector_cleanup);
975
10f637bf
DV		 976/**
977 * drm_connector_index - find the index of a registered connector
978 * @connector: connector to find index for
979 *
980 * Given a registered connector, return the index of that connector within a DRM
981 * device's list of connectors.
982 */
983unsigned int drm_connector_index(struct drm_connector *connector)
984{
985 unsigned int index = 0;
986 struct drm_connector *tmp;
c7eb76f4
DV		 987 struct drm_mode_config *config = &connector->dev->mode_config;
988
989 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
10f637bf
DV		 990
991 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
992 if (tmp == connector)
993 return index;
994
995 index++;
996 }
997
998 BUG();
999}
1000EXPORT_SYMBOL(drm_connector_index);
1001
34ea3d38
TW		 1002/**
1003 * drm_connector_register - register a connector
1004 * @connector: the connector to register
1005 *
1006 * Register userspace interfaces for a connector
1007 *
1008 * Returns:
1009 * Zero on success, error code on failure.
1010 */
1011int drm_connector_register(struct drm_connector *connector)
1012{
30f65707
TW		 1013 int ret;
1014
2ee39452
DA		 1015 drm_mode_object_register(connector->dev, &connector->base);
1016
30f65707
TW		 1017 ret = drm_sysfs_connector_add(connector);
1018 if (ret)
1019 return ret;
1020
1021 ret = drm_debugfs_connector_add(connector);
1022 if (ret) {
1023 drm_sysfs_connector_remove(connector);
1024 return ret;
1025 }
1026
1027 return 0;
34ea3d38
TW		 1028}
1029EXPORT_SYMBOL(drm_connector_register);
1030
1031/**
1032 * drm_connector_unregister - unregister a connector
1033 * @connector: the connector to unregister
1034 *
1035 * Unregister userspace interfaces for a connector
1036 */
1037void drm_connector_unregister(struct drm_connector *connector)
1038{
1039 drm_sysfs_connector_remove(connector);
30f65707 1040 drm_debugfs_connector_remove(connector);
34ea3d38
TW		 1041}
1042EXPORT_SYMBOL(drm_connector_unregister);
1043
1044
c8e32cc1
DV		 1045/**
1046 * drm_connector_unplug_all - unregister connector userspace interfaces
1047 * @dev: drm device
1048 *
1049 * This function unregisters all connector userspace interfaces in sysfs. Should
1050 * be call when the device is disconnected, e.g. from an usb driver's
1051 * ->disconnect callback.
1052 */
cbc7e221
DA		 1053void drm_connector_unplug_all(struct drm_device *dev)
1054{
1055 struct drm_connector *connector;
1056
1057 /* taking the mode config mutex ends up in a clash with sysfs */
1058 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
34ea3d38 1059 drm_connector_unregister(connector);
cbc7e221
DA		 1060
1061}
1062EXPORT_SYMBOL(drm_connector_unplug_all);
1063
c8e32cc1
DV		 1064/**
1065 * drm_bridge_init - initialize a drm transcoder/bridge
1066 * @dev: drm device
1067 * @bridge: transcoder/bridge to set up
1068 * @funcs: bridge function table
1069 *
1070 * Initialises a preallocated bridge. Bridges should be
1071 * subclassed as part of driver connector objects.
1072 *
1073 * Returns:
1074 * Zero on success, error code on failure.
1075 */
3b336ec4
SP		 1076int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1077 const struct drm_bridge_funcs *funcs)
1078{
1079 int ret;
1080
1081 drm_modeset_lock_all(dev);
1082
1083 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1084 if (ret)
1085 goto out;
1086
1087 bridge->dev = dev;
1088 bridge->funcs = funcs;
1089
1090 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1091 dev->mode_config.num_bridge++;
1092
1093 out:
1094 drm_modeset_unlock_all(dev);
1095 return ret;
1096}
1097EXPORT_SYMBOL(drm_bridge_init);
1098
c8e32cc1
DV		 1099/**
1100 * drm_bridge_cleanup - cleans up an initialised bridge
1101 * @bridge: bridge to cleanup
1102 *
1103 * Cleans up the bridge but doesn't free the object.
1104 */
3b336ec4
SP		 1105void drm_bridge_cleanup(struct drm_bridge *bridge)
1106{
1107 struct drm_device *dev = bridge->dev;
1108
1109 drm_modeset_lock_all(dev);
1110 drm_mode_object_put(dev, &bridge->base);
1111 list_del(&bridge->head);
1112 dev->mode_config.num_bridge--;
1113 drm_modeset_unlock_all(dev);
a18c0af1
TR		 1114
1115 memset(bridge, 0, sizeof(*bridge));
3b336ec4
SP		 1116}
1117EXPORT_SYMBOL(drm_bridge_cleanup);
1118
c8e32cc1
DV		 1119/**
1120 * drm_encoder_init - Init a preallocated encoder
1121 * @dev: drm device
1122 * @encoder: the encoder to init
1123 * @funcs: callbacks for this encoder
1124 * @encoder_type: user visible type of the encoder
1125 *
1126 * Initialises a preallocated encoder. Encoder should be
1127 * subclassed as part of driver encoder objects.
1128 *
1129 * Returns:
1130 * Zero on success, error code on failure.
1131 */
6bfc56aa 1132int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 1133 struct drm_encoder *encoder,
1134 const struct drm_encoder_funcs *funcs,
1135 int encoder_type)
f453ba04 1136{
6bfc56aa
VS		 1137 int ret;
1138
84849903 1139 drm_modeset_lock_all(dev);
f453ba04 1140
6bfc56aa
VS		 1141 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1142 if (ret)
e5748946 1143 goto out_unlock;
f453ba04 1144
6bfc56aa 1145 encoder->dev = dev;
f453ba04
DA		 1146 encoder->encoder_type = encoder_type;
1147 encoder->funcs = funcs;
e5748946
JN		 1148 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1149 drm_encoder_enum_list[encoder_type].name,
1150 encoder->base.id);
1151 if (!encoder->name) {
1152 ret = -ENOMEM;
1153 goto out_put;
1154 }
f453ba04
DA		 1155
1156 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1157 dev->mode_config.num_encoder++;
1158
e5748946
JN		 1159out_put:
1160 if (ret)
1161 drm_mode_object_put(dev, &encoder->base);
1162
1163out_unlock:
84849903 1164 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 1165
1166 return ret;
f453ba04
DA		 1167}
1168EXPORT_SYMBOL(drm_encoder_init);
1169
c8e32cc1
DV		 1170/**
1171 * drm_encoder_cleanup - cleans up an initialised encoder
1172 * @encoder: encoder to cleanup
1173 *
1174 * Cleans up the encoder but doesn't free the object.
1175 */
f453ba04
DA		 1176void drm_encoder_cleanup(struct drm_encoder *encoder)
1177{
1178 struct drm_device *dev = encoder->dev;
4dfd909f 1179
84849903 1180 drm_modeset_lock_all(dev);
f453ba04 1181 drm_mode_object_put(dev, &encoder->base);
e5748946 1182 kfree(encoder->name);
f453ba04 1183 list_del(&encoder->head);
6380c509 1184 dev->mode_config.num_encoder--;
84849903 1185 drm_modeset_unlock_all(dev);
a18c0af1
TR		 1186
1187 memset(encoder, 0, sizeof(*encoder));
f453ba04
DA		 1188}
1189EXPORT_SYMBOL(drm_encoder_cleanup);
1190
35f2c3ae 1191/**
dc415ff9 1192 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1193 * @dev: DRM device
1194 * @plane: plane object to init
1195 * @possible_crtcs: bitmask of possible CRTCs
1196 * @funcs: callbacks for the new plane
1197 * @formats: array of supported formats (%DRM_FORMAT_*)
1198 * @format_count: number of elements in @formats
dc415ff9 1199 * @type: type of plane (overlay, primary, cursor)
35f2c3ae 1200 *
dc415ff9 1201 * Initializes a plane object of type @type.
35f2c3ae 1202 *
c8e32cc1 1203 * Returns:
35f2c3ae
VS		 1204 * Zero on success, error code on failure.
1205 */
dc415ff9
MR		 1206int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1207 unsigned long possible_crtcs,
1208 const struct drm_plane_funcs *funcs,
1209 const uint32_t *formats, uint32_t format_count,
1210 enum drm_plane_type type)
8cf5c917 1211{
6b4959f4 1212 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 1213 int ret;
1214
6bfc56aa
VS		 1215 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1216 if (ret)
baf698b0 1217 return ret;
6bfc56aa 1218
4d02e2de
DV		 1219 drm_modeset_lock_init(&plane->mutex);
1220
4d93914a 1221 plane->base.properties = &plane->properties;
8cf5c917 1222 plane->dev = dev;
8cf5c917 1223 plane->funcs = funcs;
2f6c5389
TR		 1224 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1225 GFP_KERNEL);
8cf5c917
JB		 1226 if (!plane->format_types) {
1227 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1228 drm_mode_object_put(dev, &plane->base);
baf698b0 1229 return -ENOMEM;
8cf5c917
JB		 1230 }
1231
308e5bcb 1232 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1233 plane->format_count = format_count;
1234 plane->possible_crtcs = possible_crtcs;
dc415ff9 1235 plane->type = type;
8cf5c917 1236
6b4959f4
RC		 1237 list_add_tail(&plane->head, &config->plane_list);
1238 config->num_total_plane++;
dc415ff9 1239 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
6b4959f4 1240 config->num_overlay_plane++;
8cf5c917 1241
9922ab5a 1242 drm_object_attach_property(&plane->base,
6b4959f4 1243 config->plane_type_property,
9922ab5a
RC		 1244 plane->type);
1245
6b4959f4
RC		 1246 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1247 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1248 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1249 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1250 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1251 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1252 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1253 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1254 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1255 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1256 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1257 }
1258
baf698b0 1259 return 0;
8cf5c917 1260}
dc415ff9
MR		 1261EXPORT_SYMBOL(drm_universal_plane_init);
1262
1263/**
1264 * drm_plane_init - Initialize a legacy plane
1265 * @dev: DRM device
1266 * @plane: plane object to init
1267 * @possible_crtcs: bitmask of possible CRTCs
1268 * @funcs: callbacks for the new plane
1269 * @formats: array of supported formats (%DRM_FORMAT_*)
1270 * @format_count: number of elements in @formats
1271 * @is_primary: plane type (primary vs overlay)
1272 *
1273 * Legacy API to initialize a DRM plane.
1274 *
1275 * New drivers should call drm_universal_plane_init() instead.
1276 *
1277 * Returns:
1278 * Zero on success, error code on failure.
1279 */
1280int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1281 unsigned long possible_crtcs,
1282 const struct drm_plane_funcs *funcs,
1283 const uint32_t *formats, uint32_t format_count,
1284 bool is_primary)
1285{
1286 enum drm_plane_type type;
1287
1288 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1289 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1290 formats, format_count, type);
1291}
8cf5c917
JB		 1292EXPORT_SYMBOL(drm_plane_init);
1293
35f2c3ae
VS		 1294/**
1295 * drm_plane_cleanup - Clean up the core plane usage
1296 * @plane: plane to cleanup
1297 *
1298 * This function cleans up @plane and removes it from the DRM mode setting
1299 * core. Note that the function does *not* free the plane structure itself,
1300 * this is the responsibility of the caller.
1301 */
8cf5c917
JB		 1302void drm_plane_cleanup(struct drm_plane *plane)
1303{
1304 struct drm_device *dev = plane->dev;
1305
84849903 1306 drm_modeset_lock_all(dev);
8cf5c917
JB		 1307 kfree(plane->format_types);
1308 drm_mode_object_put(dev, &plane->base);
dc415ff9
MR		 1309
1310 BUG_ON(list_empty(&plane->head));
1311
1312 list_del(&plane->head);
1313 dev->mode_config.num_total_plane--;
1314 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1315 dev->mode_config.num_overlay_plane--;
84849903 1316 drm_modeset_unlock_all(dev);
3009c037
TR		 1317
1318 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1319 if (plane->state && plane->funcs->atomic_destroy_state)
1320 plane->funcs->atomic_destroy_state(plane, plane->state);
a18c0af1
TR		 1321
1322 memset(plane, 0, sizeof(*plane));
8cf5c917
JB		 1323}
1324EXPORT_SYMBOL(drm_plane_cleanup);
1325
10f637bf
DV		 1326/**
1327 * drm_plane_index - find the index of a registered plane
1328 * @plane: plane to find index for
1329 *
1330 * Given a registered plane, return the index of that CRTC within a DRM
1331 * device's list of planes.
1332 */
1333unsigned int drm_plane_index(struct drm_plane *plane)
1334{
1335 unsigned int index = 0;
1336 struct drm_plane *tmp;
1337
1338 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1339 if (tmp == plane)
1340 return index;
1341
1342 index++;
1343 }
1344
1345 BUG();
1346}
1347EXPORT_SYMBOL(drm_plane_index);
1348
35f2c3ae
VS		 1349/**
1350 * drm_plane_force_disable - Forcibly disable a plane
1351 * @plane: plane to disable
1352 *
1353 * Forces the plane to be disabled.
1354 *
1355 * Used when the plane's current framebuffer is destroyed,
1356 * and when restoring fbdev mode.
1357 */
9125e618
VS		 1358void drm_plane_force_disable(struct drm_plane *plane)
1359{
1360 int ret;
1361
3d30a59b 1362 if (!plane->fb)
9125e618
VS		 1363 return;
1364
3d30a59b 1365 plane->old_fb = plane->fb;
9125e618 1366 ret = plane->funcs->disable_plane(plane);
731cce48 1367 if (ret) {
9125e618 1368 DRM_ERROR("failed to disable plane with busy fb\n");
3d30a59b 1369 plane->old_fb = NULL;
731cce48
DV		 1370 return;
1371 }
9125e618 1372 /* disconnect the plane from the fb and crtc: */
3d30a59b
DV		 1373 __drm_framebuffer_unreference(plane->old_fb);
1374 plane->old_fb = NULL;
9125e618
VS		 1375 plane->fb = NULL;
1376 plane->crtc = NULL;
1377}
1378EXPORT_SYMBOL(drm_plane_force_disable);
1379
6b4959f4 1380static int drm_mode_create_standard_properties(struct drm_device *dev)
f453ba04 1381{
356af0e1 1382 struct drm_property *prop;
f453ba04
DA		 1383
1384 /*
1385 * Standard properties (apply to all connectors)
1386 */
356af0e1 1387 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
f453ba04
DA		 1388 DRM_MODE_PROP_IMMUTABLE,
1389 "EDID", 0);
356af0e1
RC		 1390 if (!prop)
1391 return -ENOMEM;
1392 dev->mode_config.edid_property = prop;
f453ba04 1393
356af0e1 1394 prop = drm_property_create_enum(dev, 0,
4a67d391
SH		 1395 "DPMS", drm_dpms_enum_list,
1396 ARRAY_SIZE(drm_dpms_enum_list));
356af0e1
RC		 1397 if (!prop)
1398 return -ENOMEM;
1399 dev->mode_config.dpms_property = prop;
6f134d7b 1400
356af0e1
RC		 1401 prop = drm_property_create(dev,
1402 DRM_MODE_PROP_BLOB |
1403 DRM_MODE_PROP_IMMUTABLE,
1404 "PATH", 0);
1405 if (!prop)
1406 return -ENOMEM;
1407 dev->mode_config.path_property = prop;
f453ba04 1408
356af0e1
RC		 1409 prop = drm_property_create(dev,
1410 DRM_MODE_PROP_BLOB |
1411 DRM_MODE_PROP_IMMUTABLE,
1412 "TILE", 0);
1413 if (!prop)
1414 return -ENOMEM;
1415 dev->mode_config.tile_property = prop;
9922ab5a 1416
6b4959f4 1417 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
9922ab5a
RC		 1418 "type", drm_plane_type_enum_list,
1419 ARRAY_SIZE(drm_plane_type_enum_list));
6b4959f4
RC		 1420 if (!prop)
1421 return -ENOMEM;
1422 dev->mode_config.plane_type_property = prop;
1423
1424 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1425 "SRC_X", 0, UINT_MAX);
1426 if (!prop)
1427 return -ENOMEM;
1428 dev->mode_config.prop_src_x = prop;
1429
1430 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1431 "SRC_Y", 0, UINT_MAX);
1432 if (!prop)
1433 return -ENOMEM;
1434 dev->mode_config.prop_src_y = prop;
1435
1436 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1437 "SRC_W", 0, UINT_MAX);
1438 if (!prop)
1439 return -ENOMEM;
1440 dev->mode_config.prop_src_w = prop;
1441
1442 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1443 "SRC_H", 0, UINT_MAX);
1444 if (!prop)
1445 return -ENOMEM;
1446 dev->mode_config.prop_src_h = prop;
1447
1448 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1449 "CRTC_X", INT_MIN, INT_MAX);
1450 if (!prop)
1451 return -ENOMEM;
1452 dev->mode_config.prop_crtc_x = prop;
1453
1454 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1455 "CRTC_Y", INT_MIN, INT_MAX);
1456 if (!prop)
1457 return -ENOMEM;
1458 dev->mode_config.prop_crtc_y = prop;
1459
1460 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1461 "CRTC_W", 0, INT_MAX);
1462 if (!prop)
1463 return -ENOMEM;
1464 dev->mode_config.prop_crtc_w = prop;
1465
1466 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1467 "CRTC_H", 0, INT_MAX);
1468 if (!prop)
1469 return -ENOMEM;
1470 dev->mode_config.prop_crtc_h = prop;
1471
1472 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1473 "FB_ID", DRM_MODE_OBJECT_FB);
1474 if (!prop)
1475 return -ENOMEM;
1476 dev->mode_config.prop_fb_id = prop;
1477
1478 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1479 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1480 if (!prop)
1481 return -ENOMEM;
1482 dev->mode_config.prop_crtc_id = prop;
9922ab5a
RC		 1483
1484 return 0;
1485}
1486
f453ba04
DA		 1487/**
1488 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1489 * @dev: DRM device
1490 *
1491 * Called by a driver the first time a DVI-I connector is made.
1492 */
1493int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1494{
1495 struct drm_property *dvi_i_selector;
1496 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1497
1498 if (dev->mode_config.dvi_i_select_subconnector_property)
1499 return 0;
1500
1501 dvi_i_selector =
4a67d391 1502 drm_property_create_enum(dev, 0,
f453ba04 1503 "select subconnector",
4a67d391 1504 drm_dvi_i_select_enum_list,
f453ba04 1505 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1506 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1507
4a67d391 1508 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1509 "subconnector",
4a67d391 1510 drm_dvi_i_subconnector_enum_list,
f453ba04 1511 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1512 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1513
1514 return 0;
1515}
1516EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1517
1518/**
1519 * drm_create_tv_properties - create TV specific connector properties
1520 * @dev: DRM device
1521 * @num_modes: number of different TV formats (modes) supported
1522 * @modes: array of pointers to strings containing name of each format
1523 *
1524 * Called by a driver's TV initialization routine, this function creates
1525 * the TV specific connector properties for a given device. Caller is
1526 * responsible for allocating a list of format names and passing them to
1527 * this routine.
1528 */
2f763312
TR		 1529int drm_mode_create_tv_properties(struct drm_device *dev,
1530 unsigned int num_modes,
f453ba04
DA		 1531 char *modes[])
1532{
1533 struct drm_property *tv_selector;
1534 struct drm_property *tv_subconnector;
2f763312 1535 unsigned int i;
f453ba04
DA		 1536
1537 if (dev->mode_config.tv_select_subconnector_property)
1538 return 0;
1539
1540 /*
1541 * Basic connector properties
1542 */
4a67d391 1543 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1544 "select subconnector",
4a67d391 1545 drm_tv_select_enum_list,
f453ba04 1546 ARRAY_SIZE(drm_tv_select_enum_list));
f453ba04
DA		 1547 dev->mode_config.tv_select_subconnector_property = tv_selector;
1548
1549 tv_subconnector =
4a67d391
SH		 1550 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1551 "subconnector",
1552 drm_tv_subconnector_enum_list,
f453ba04 1553 ARRAY_SIZE(drm_tv_subconnector_enum_list));
f453ba04
DA		 1554 dev->mode_config.tv_subconnector_property = tv_subconnector;
1555
1556 /*
1557 * Other, TV specific properties: margins & TV modes.
1558 */
1559 dev->mode_config.tv_left_margin_property =
d9bc3c02 1560 drm_property_create_range(dev, 0, "left margin", 0, 100);
f453ba04
DA		 1561
1562 dev->mode_config.tv_right_margin_property =
d9bc3c02 1563 drm_property_create_range(dev, 0, "right margin", 0, 100);
f453ba04
DA		 1564
1565 dev->mode_config.tv_top_margin_property =
d9bc3c02 1566 drm_property_create_range(dev, 0, "top margin", 0, 100);
f453ba04
DA		 1567
1568 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1569 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
f453ba04
DA		 1570
1571 dev->mode_config.tv_mode_property =
1572 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1573 "mode", num_modes);
1574 for (i = 0; i < num_modes; i++)
1575 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1576 i, modes[i]);
1577
b6b7902e 1578 dev->mode_config.tv_brightness_property =
d9bc3c02 1579 drm_property_create_range(dev, 0, "brightness", 0, 100);
b6b7902e
FJ		 1580
1581 dev->mode_config.tv_contrast_property =
d9bc3c02 1582 drm_property_create_range(dev, 0, "contrast", 0, 100);
b6b7902e
FJ		 1583
1584 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1585 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
b6b7902e 1586
a75f0236 1587 dev->mode_config.tv_overscan_property =
d9bc3c02 1588 drm_property_create_range(dev, 0, "overscan", 0, 100);
a75f0236
FJ		 1589
1590 dev->mode_config.tv_saturation_property =
d9bc3c02 1591 drm_property_create_range(dev, 0, "saturation", 0, 100);
a75f0236
FJ		 1592
1593 dev->mode_config.tv_hue_property =
d9bc3c02 1594 drm_property_create_range(dev, 0, "hue", 0, 100);
a75f0236 1595
f453ba04
DA		 1596 return 0;
1597}
1598EXPORT_SYMBOL(drm_mode_create_tv_properties);
1599
1600/**
1601 * drm_mode_create_scaling_mode_property - create scaling mode 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_scaling_mode_property(struct drm_device *dev)
1608{
1609 struct drm_property *scaling_mode;
f453ba04
DA		 1610
1611 if (dev->mode_config.scaling_mode_property)
1612 return 0;
1613
1614 scaling_mode =
4a67d391
SH		 1615 drm_property_create_enum(dev, 0, "scaling mode",
1616 drm_scaling_mode_enum_list,
f453ba04 1617 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1618
1619 dev->mode_config.scaling_mode_property = scaling_mode;
1620
1621 return 0;
1622}
1623EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1624
ff587e45
VK		 1625/**
1626 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1627 * @dev: DRM device
1628 *
1629 * Called by a driver the first time it's needed, must be attached to desired
1630 * connectors.
1631 *
1632 * Returns:
1a498633 1633 * Zero on success, negative errno on failure.
ff587e45
VK		 1634 */
1635int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1636{
1637 if (dev->mode_config.aspect_ratio_property)
1638 return 0;
1639
1640 dev->mode_config.aspect_ratio_property =
1641 drm_property_create_enum(dev, 0, "aspect ratio",
1642 drm_aspect_ratio_enum_list,
1643 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1644
1645 if (dev->mode_config.aspect_ratio_property == NULL)
1646 return -ENOMEM;
1647
1648 return 0;
1649}
1650EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1651
884840aa
JB		 1652/**
1653 * drm_mode_create_dirty_property - create dirty property
1654 * @dev: DRM device
1655 *
1656 * Called by a driver the first time it's needed, must be attached to desired
1657 * connectors.
1658 */
1659int drm_mode_create_dirty_info_property(struct drm_device *dev)
1660{
1661 struct drm_property *dirty_info;
884840aa
JB		 1662
1663 if (dev->mode_config.dirty_info_property)
1664 return 0;
1665
1666 dirty_info =
4a67d391 1667 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1668 "dirty",
4a67d391 1669 drm_dirty_info_enum_list,
884840aa 1670 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1671 dev->mode_config.dirty_info_property = dirty_info;
1672
1673 return 0;
1674}
1675EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1676
5bb2bbf5
DA		 1677/**
1678 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1679 * @dev: DRM device
1680 *
1681 * Create the the suggested x/y offset property for connectors.
1682 */
1683int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1684{
1685 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1686 return 0;
1687
1688 dev->mode_config.suggested_x_property =
1689 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1690
1691 dev->mode_config.suggested_y_property =
1692 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1693
1694 if (dev->mode_config.suggested_x_property == NULL ||
1695 dev->mode_config.suggested_y_property == NULL)
1696 return -ENOMEM;
1697 return 0;
1698}
1699EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1700
ea9cbb06 1701static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
f453ba04
DA		 1702{
1703 uint32_t total_objects = 0;
1704
1705 total_objects += dev->mode_config.num_crtc;
1706 total_objects += dev->mode_config.num_connector;
1707 total_objects += dev->mode_config.num_encoder;
3b336ec4 1708 total_objects += dev->mode_config.num_bridge;
f453ba04 1709
bd3f0ff9 1710 group->id_list = kcalloc(total_objects, sizeof(uint32_t), GFP_KERNEL);
f453ba04
DA		 1711 if (!group->id_list)
1712 return -ENOMEM;
1713
1714 group->num_crtcs = 0;
1715 group->num_connectors = 0;
1716 group->num_encoders = 0;
3b336ec4 1717 group->num_bridges = 0;
f453ba04
DA		 1718 return 0;
1719}
1720
ad222799
DA		 1721void drm_mode_group_destroy(struct drm_mode_group *group)
1722{
1723 kfree(group->id_list);
1724 group->id_list = NULL;
1725}
1726
c8e32cc1
DV		 1727/*
1728 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1729 * the drm core's responsibility to set up mode control groups.
1730 */
f453ba04
DA		 1731int drm_mode_group_init_legacy_group(struct drm_device *dev,
1732 struct drm_mode_group *group)
1733{
1734 struct drm_crtc *crtc;
1735 struct drm_encoder *encoder;
1736 struct drm_connector *connector;
3b336ec4 1737 struct drm_bridge *bridge;
f453ba04
DA		 1738 int ret;
1739
0cc0b223
TR		 1740 ret = drm_mode_group_init(dev, group);
1741 if (ret)
f453ba04
DA		 1742 return ret;
1743
1744 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1745 group->id_list[group->num_crtcs++] = crtc->base.id;
1746
1747 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1748 group->id_list[group->num_crtcs + group->num_encoders++] =
1749 encoder->base.id;
1750
1751 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1752 group->id_list[group->num_crtcs + group->num_encoders +
1753 group->num_connectors++] = connector->base.id;
1754
3b336ec4
SP		 1755 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1756 group->id_list[group->num_crtcs + group->num_encoders +
1757 group->num_connectors + group->num_bridges++] =
1758 bridge->base.id;
1759
f453ba04
DA		 1760 return 0;
1761}
9c1dfc55 1762EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
f453ba04 1763
2390cd11
DA		 1764void drm_reinit_primary_mode_group(struct drm_device *dev)
1765{
1766 drm_modeset_lock_all(dev);
1767 drm_mode_group_destroy(&dev->primary->mode_group);
1768 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1769 drm_modeset_unlock_all(dev);
1770}
1771EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1772
f453ba04
DA		 1773/**
1774 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1775 * @out: drm_mode_modeinfo struct to return to the user
1776 * @in: drm_display_mode to use
1777 *
f453ba04
DA		 1778 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1779 * the user.
1780 */
93bbf6db
VS		 1781static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1782 const struct drm_display_mode *in)
f453ba04 1783{
e36fae38
VS		 1784 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1785 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1786 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1787 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1788 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1789 "timing values too large for mode info\n");
1790
f453ba04
DA		 1791 out->clock = in->clock;
1792 out->hdisplay = in->hdisplay;
1793 out->hsync_start = in->hsync_start;
1794 out->hsync_end = in->hsync_end;
1795 out->htotal = in->htotal;
1796 out->hskew = in->hskew;
1797 out->vdisplay = in->vdisplay;
1798 out->vsync_start = in->vsync_start;
1799 out->vsync_end = in->vsync_end;
1800 out->vtotal = in->vtotal;
1801 out->vscan = in->vscan;
1802 out->vrefresh = in->vrefresh;
1803 out->flags = in->flags;
1804 out->type = in->type;
1805 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1806 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1807}
1808
1809/**
74afee7d 1810 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
f453ba04
DA		 1811 * @out: drm_display_mode to return to the user
1812 * @in: drm_mode_modeinfo to use
1813 *
f453ba04
DA		 1814 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1815 * the caller.
90367bf6 1816 *
c8e32cc1 1817 * Returns:
1a498633 1818 * Zero on success, negative errno on failure.
f453ba04 1819 */
93bbf6db
VS		 1820static int drm_crtc_convert_umode(struct drm_display_mode *out,
1821 const struct drm_mode_modeinfo *in)
f453ba04 1822{
90367bf6
VS		 1823 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1824 return -ERANGE;
1825
5848ad40
DL		 1826 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1827 return -EINVAL;
1828
f453ba04
DA		 1829 out->clock = in->clock;
1830 out->hdisplay = in->hdisplay;
1831 out->hsync_start = in->hsync_start;
1832 out->hsync_end = in->hsync_end;
1833 out->htotal = in->htotal;
1834 out->hskew = in->hskew;
1835 out->vdisplay = in->vdisplay;
1836 out->vsync_start = in->vsync_start;
1837 out->vsync_end = in->vsync_end;
1838 out->vtotal = in->vtotal;
1839 out->vscan = in->vscan;
1840 out->vrefresh = in->vrefresh;
1841 out->flags = in->flags;
1842 out->type = in->type;
1843 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1844 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
90367bf6
VS		 1845
1846 return 0;
f453ba04
DA		 1847}
1848
1849/**
1850 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1851 * @dev: drm device for the ioctl
1852 * @data: data pointer for the ioctl
1853 * @file_priv: drm file for the ioctl call
f453ba04 1854 *
f453ba04
DA		 1855 * Construct a set of configuration description structures and return
1856 * them to the user, including CRTC, connector and framebuffer configuration.
1857 *
1858 * Called by the user via ioctl.
1859 *
c8e32cc1 1860 * Returns:
1a498633 1861 * Zero on success, negative errno on failure.
f453ba04
DA		 1862 */
1863int drm_mode_getresources(struct drm_device *dev, void *data,
1864 struct drm_file *file_priv)
1865{
1866 struct drm_mode_card_res *card_res = data;
1867 struct list_head *lh;
1868 struct drm_framebuffer *fb;
1869 struct drm_connector *connector;
1870 struct drm_crtc *crtc;
1871 struct drm_encoder *encoder;
1872 int ret = 0;
1873 int connector_count = 0;
1874 int crtc_count = 0;
1875 int fb_count = 0;
1876 int encoder_count = 0;
1877 int copied = 0, i;
1878 uint32_t __user *fb_id;
1879 uint32_t __user *crtc_id;
1880 uint32_t __user *connector_id;
1881 uint32_t __user *encoder_id;
1882 struct drm_mode_group *mode_group;
1883
fb3b06c8
DA		 1884 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1885 return -EINVAL;
1886
f453ba04 1887
4b096ac1 1888 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1889 /*
1890 * For the non-control nodes we need to limit the list of resources
1891 * by IDs in the group list for this node
1892 */
1893 list_for_each(lh, &file_priv->fbs)
1894 fb_count++;
1895
4b096ac1
DV		 1896 /* handle this in 4 parts */
1897 /* FBs */
1898 if (card_res->count_fbs >= fb_count) {
1899 copied = 0;
1900 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1901 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1902 if (put_user(fb->base.id, fb_id + copied)) {
1903 mutex_unlock(&file_priv->fbs_lock);
1904 return -EFAULT;
1905 }
1906 copied++;
1907 }
1908 }
1909 card_res->count_fbs = fb_count;
1910 mutex_unlock(&file_priv->fbs_lock);
1911
fcf93f69
DV		 1912 /* mode_config.mutex protects the connector list against e.g. DP MST
1913 * connector hot-adding. CRTC/Plane lists are invariant. */
1914 mutex_lock(&dev->mode_config.mutex);
43683057 1915 if (!drm_is_primary_client(file_priv)) {
f453ba04 1916
09f308f7 1917 mode_group = NULL;
f453ba04
DA		 1918 list_for_each(lh, &dev->mode_config.crtc_list)
1919 crtc_count++;
1920
1921 list_for_each(lh, &dev->mode_config.connector_list)
1922 connector_count++;
1923
1924 list_for_each(lh, &dev->mode_config.encoder_list)
1925 encoder_count++;
1926 } else {
1927
09f308f7 1928 mode_group = &file_priv->master->minor->mode_group;
f453ba04
DA		 1929 crtc_count = mode_group->num_crtcs;
1930 connector_count = mode_group->num_connectors;
1931 encoder_count = mode_group->num_encoders;
1932 }
1933
1934 card_res->max_height = dev->mode_config.max_height;
1935 card_res->min_height = dev->mode_config.min_height;
1936 card_res->max_width = dev->mode_config.max_width;
1937 card_res->min_width = dev->mode_config.min_width;
1938
f453ba04
DA		 1939 /* CRTCs */
1940 if (card_res->count_crtcs >= crtc_count) {
1941 copied = 0;
1942 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
09f308f7 1943 if (!mode_group) {
f453ba04
DA		 1944 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1945 head) {
9440106b 1946 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1947 if (put_user(crtc->base.id, crtc_id + copied)) {
1948 ret = -EFAULT;
1949 goto out;
1950 }
1951 copied++;
1952 }
1953 } else {
1954 for (i = 0; i < mode_group->num_crtcs; i++) {
1955 if (put_user(mode_group->id_list[i],
1956 crtc_id + copied)) {
1957 ret = -EFAULT;
1958 goto out;
1959 }
1960 copied++;
1961 }
1962 }
1963 }
1964 card_res->count_crtcs = crtc_count;
1965
1966 /* Encoders */
1967 if (card_res->count_encoders >= encoder_count) {
1968 copied = 0;
1969 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
09f308f7 1970 if (!mode_group) {
f453ba04
DA		 1971 list_for_each_entry(encoder,
1972 &dev->mode_config.encoder_list,
1973 head) {
9440106b 1974 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
83a8cfd3 1975 encoder->name);
f453ba04
DA		 1976 if (put_user(encoder->base.id, encoder_id +
1977 copied)) {
1978 ret = -EFAULT;
1979 goto out;
1980 }
1981 copied++;
1982 }
1983 } else {
1984 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1985 if (put_user(mode_group->id_list[i],
1986 encoder_id + copied)) {
1987 ret = -EFAULT;
1988 goto out;
1989 }
1990 copied++;
1991 }
1992
1993 }
1994 }
1995 card_res->count_encoders = encoder_count;
1996
1997 /* Connectors */
1998 if (card_res->count_connectors >= connector_count) {
1999 copied = 0;
2000 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
09f308f7 2001 if (!mode_group) {
f453ba04
DA		 2002 list_for_each_entry(connector,
2003 &dev->mode_config.connector_list,
2004 head) {
9440106b
JG		 2005 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2006 connector->base.id,
25933820 2007 connector->name);
f453ba04
DA		 2008 if (put_user(connector->base.id,
2009 connector_id + copied)) {
2010 ret = -EFAULT;
2011 goto out;
2012 }
2013 copied++;
2014 }
2015 } else {
2016 int start = mode_group->num_crtcs +
2017 mode_group->num_encoders;
2018 for (i = start; i < start + mode_group->num_connectors; i++) {
2019 if (put_user(mode_group->id_list[i],
2020 connector_id + copied)) {
2021 ret = -EFAULT;
2022 goto out;
2023 }
2024 copied++;
2025 }
2026 }
2027 }
2028 card_res->count_connectors = connector_count;
2029
9440106b 2030 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 2031 card_res->count_connectors, card_res->count_encoders);
2032
2033out:
fcf93f69 2034 mutex_unlock(&dev->mode_config.mutex);
f453ba04
DA		 2035 return ret;
2036}
2037
2038/**
2039 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 2040 * @dev: drm device for the ioctl
2041 * @data: data pointer for the ioctl
2042 * @file_priv: drm file for the ioctl call
f453ba04 2043 *
f453ba04
DA		 2044 * Construct a CRTC configuration structure to return to the user.
2045 *
2046 * Called by the user via ioctl.
2047 *
c8e32cc1 2048 * Returns:
1a498633 2049 * Zero on success, negative errno on failure.
f453ba04
DA		 2050 */
2051int drm_mode_getcrtc(struct drm_device *dev,
2052 void *data, struct drm_file *file_priv)
2053{
2054 struct drm_mode_crtc *crtc_resp = data;
2055 struct drm_crtc *crtc;
f453ba04 2056
fb3b06c8
DA		 2057 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2058 return -EINVAL;
2059
a2b34e22 2060 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
fcf93f69
DV		 2061 if (!crtc)
2062 return -ENOENT;
f453ba04 2063
fcf93f69 2064 drm_modeset_lock_crtc(crtc, crtc->primary);
f453ba04
DA		 2065 crtc_resp->x = crtc->x;
2066 crtc_resp->y = crtc->y;
2067 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 2068 if (crtc->primary->fb)
2069 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 2070 else
2071 crtc_resp->fb_id = 0;
2072
2073 if (crtc->enabled) {
2074
2075 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2076 crtc_resp->mode_valid = 1;
2077
2078 } else {
2079 crtc_resp->mode_valid = 0;
2080 }
fcf93f69 2081 drm_modeset_unlock_crtc(crtc);
f453ba04 2082
baf698b0 2083 return 0;
f453ba04
DA		 2084}
2085
61d8e328
DL		 2086static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2087 const struct drm_file *file_priv)
2088{
2089 /*
2090 * If user-space hasn't configured the driver to expose the stereo 3D
2091 * modes, don't expose them.
2092 */
2093 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2094 return false;
2095
2096 return true;
2097}
2098
abd69c55
DV		 2099static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2100{
2101 /* For atomic drivers only state objects are synchronously updated and
2102 * protected by modeset locks, so check those first. */
2103 if (connector->state)
2104 return connector->state->best_encoder;
2105 return connector->encoder;
2106}
2107
95cbf110 2108/* helper for getconnector and getproperties ioctls */
88a48e29 2109static int get_properties(struct drm_mode_object *obj, bool atomic,
95cbf110
RC		 2110 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2111 uint32_t *arg_count_props)
2112{
88a48e29
RC		 2113 int props_count;
2114 int i, ret, copied;
2115
2116 props_count = obj->properties->count;
2117 if (!atomic)
2118 props_count -= obj->properties->atomic_count;
95cbf110
RC		 2119
2120 if ((*arg_count_props >= props_count) && props_count) {
88a48e29 2121 for (i = 0, copied = 0; copied < props_count; i++) {
95cbf110
RC		 2122 struct drm_property *prop = obj->properties->properties[i];
2123 uint64_t val;
2124
88a48e29
RC		 2125 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2126 continue;
2127
95cbf110
RC		 2128 ret = drm_object_property_get_value(obj, prop, &val);
2129 if (ret)
2130 return ret;
2131
2132 if (put_user(prop->base.id, prop_ptr + copied))
2133 return -EFAULT;
2134
2135 if (put_user(val, prop_values + copied))
2136 return -EFAULT;
2137
2138 copied++;
2139 }
2140 }
2141 *arg_count_props = props_count;
2142
2143 return 0;
2144}
2145
f453ba04
DA		 2146/**
2147 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 2148 * @dev: drm device for the ioctl
2149 * @data: data pointer for the ioctl
2150 * @file_priv: drm file for the ioctl call
f453ba04 2151 *
f453ba04
DA		 2152 * Construct a connector configuration structure to return to the user.
2153 *
2154 * Called by the user via ioctl.
2155 *
c8e32cc1 2156 * Returns:
1a498633 2157 * Zero on success, negative errno on failure.
f453ba04
DA		 2158 */
2159int drm_mode_getconnector(struct drm_device *dev, void *data,
2160 struct drm_file *file_priv)
2161{
2162 struct drm_mode_get_connector *out_resp = data;
f453ba04 2163 struct drm_connector *connector;
abd69c55 2164 struct drm_encoder *encoder;
f453ba04
DA		 2165 struct drm_display_mode *mode;
2166 int mode_count = 0;
f453ba04
DA		 2167 int encoders_count = 0;
2168 int ret = 0;
2169 int copied = 0;
2170 int i;
2171 struct drm_mode_modeinfo u_mode;
2172 struct drm_mode_modeinfo __user *mode_ptr;
f453ba04
DA		 2173 uint32_t __user *encoder_ptr;
2174
fb3b06c8
DA		 2175 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2176 return -EINVAL;
2177
f453ba04
DA		 2178 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2179
9440106b 2180 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 2181
7b24056b 2182 mutex_lock(&dev->mode_config.mutex);
ccfc0865 2183 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
f453ba04 2184
a2b34e22
RC		 2185 connector = drm_connector_find(dev, out_resp->connector_id);
2186 if (!connector) {
f27657f2 2187 ret = -ENOENT;
f453ba04
DA		 2188 goto out;
2189 }
f453ba04 2190
01073b08
TR		 2191 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2192 if (connector->encoder_ids[i] != 0)
f453ba04 2193 encoders_count++;
f453ba04
DA		 2194
2195 if (out_resp->count_modes == 0) {
2196 connector->funcs->fill_modes(connector,
2197 dev->mode_config.max_width,
2198 dev->mode_config.max_height);
2199 }
2200
2201 /* delayed so we get modes regardless of pre-fill_modes state */
2202 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 2203 if (drm_mode_expose_to_userspace(mode, file_priv))
2204 mode_count++;
f453ba04
DA		 2205
2206 out_resp->connector_id = connector->base.id;
2207 out_resp->connector_type = connector->connector_type;
2208 out_resp->connector_type_id = connector->connector_type_id;
2209 out_resp->mm_width = connector->display_info.width_mm;
2210 out_resp->mm_height = connector->display_info.height_mm;
2211 out_resp->subpixel = connector->display_info.subpixel_order;
2212 out_resp->connection = connector->status;
abd69c55
DV		 2213 encoder = drm_connector_get_encoder(connector);
2214 if (encoder)
2215 out_resp->encoder_id = encoder->base.id;
f453ba04
DA		 2216 else
2217 out_resp->encoder_id = 0;
2218
2219 /*
2220 * This ioctl is called twice, once to determine how much space is
2221 * needed, and the 2nd time to fill it.
2222 */
2223 if ((out_resp->count_modes >= mode_count) && mode_count) {
2224 copied = 0;
81f6c7f8 2225 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 2226 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 2227 if (!drm_mode_expose_to_userspace(mode, file_priv))
2228 continue;
2229
f453ba04
DA		 2230 drm_crtc_convert_to_umode(&u_mode, mode);
2231 if (copy_to_user(mode_ptr + copied,
2232 &u_mode, sizeof(u_mode))) {
2233 ret = -EFAULT;
2234 goto out;
2235 }
2236 copied++;
2237 }
2238 }
2239 out_resp->count_modes = mode_count;
2240
88a48e29 2241 ret = get_properties(&connector->base, file_priv->atomic,
95cbf110
RC		 2242 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2243 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2244 &out_resp->count_props);
2245 if (ret)
2246 goto out;
f453ba04
DA		 2247
2248 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2249 copied = 0;
81f6c7f8 2250 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 2251 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2252 if (connector->encoder_ids[i] != 0) {
2253 if (put_user(connector->encoder_ids[i],
2254 encoder_ptr + copied)) {
2255 ret = -EFAULT;
2256 goto out;
2257 }
2258 copied++;
2259 }
2260 }
2261 }
2262 out_resp->count_encoders = encoders_count;
2263
2264out:
ccfc0865 2265 drm_modeset_unlock(&dev->mode_config.connection_mutex);
7b24056b
DV		 2266 mutex_unlock(&dev->mode_config.mutex);
2267
f453ba04
DA		 2268 return ret;
2269}
2270
abd69c55
DV		 2271static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2272{
2273 struct drm_connector *connector;
2274 struct drm_device *dev = encoder->dev;
2275 bool uses_atomic = false;
2276
2277 /* For atomic drivers only state objects are synchronously updated and
2278 * protected by modeset locks, so check those first. */
2279 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2280 if (!connector->state)
2281 continue;
2282
2283 uses_atomic = true;
2284
2285 if (connector->state->best_encoder != encoder)
2286 continue;
2287
2288 return connector->state->crtc;
2289 }
2290
2291 /* Don't return stale data (e.g. pending async disable). */
2292 if (uses_atomic)
2293 return NULL;
2294
2295 return encoder->crtc;
2296}
2297
c8e32cc1
DV		 2298/**
2299 * drm_mode_getencoder - get encoder configuration
2300 * @dev: drm device for the ioctl
2301 * @data: data pointer for the ioctl
2302 * @file_priv: drm file for the ioctl call
2303 *
2304 * Construct a encoder configuration structure to return to the user.
2305 *
2306 * Called by the user via ioctl.
2307 *
2308 * Returns:
1a498633 2309 * Zero on success, negative errno on failure.
c8e32cc1 2310 */
f453ba04
DA		 2311int drm_mode_getencoder(struct drm_device *dev, void *data,
2312 struct drm_file *file_priv)
2313{
2314 struct drm_mode_get_encoder *enc_resp = data;
f453ba04 2315 struct drm_encoder *encoder;
abd69c55 2316 struct drm_crtc *crtc;
f453ba04 2317
fb3b06c8
DA		 2318 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2319 return -EINVAL;
2320
a2b34e22 2321 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
fcf93f69
DV		 2322 if (!encoder)
2323 return -ENOENT;
f453ba04 2324
fcf93f69 2325 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2326 crtc = drm_encoder_get_crtc(encoder);
2327 if (crtc)
2328 enc_resp->crtc_id = crtc->base.id;
2329 else if (encoder->crtc)
f453ba04
DA		 2330 enc_resp->crtc_id = encoder->crtc->base.id;
2331 else
2332 enc_resp->crtc_id = 0;
fcf93f69
DV		 2333 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2334
f453ba04
DA		 2335 enc_resp->encoder_type = encoder->encoder_type;
2336 enc_resp->encoder_id = encoder->base.id;
2337 enc_resp->possible_crtcs = encoder->possible_crtcs;
2338 enc_resp->possible_clones = encoder->possible_clones;
2339
baf698b0 2340 return 0;
f453ba04
DA		 2341}
2342
8cf5c917 2343/**
c8e32cc1 2344 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 2345 * @dev: DRM device
2346 * @data: ioctl data
2347 * @file_priv: DRM file info
2348 *
c8e32cc1
DV		 2349 * Construct a list of plane ids to return to the user.
2350 *
2351 * Called by the user via ioctl.
2352 *
2353 * Returns:
1a498633 2354 * Zero on success, negative errno on failure.
8cf5c917
JB		 2355 */
2356int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 2357 struct drm_file *file_priv)
8cf5c917
JB		 2358{
2359 struct drm_mode_get_plane_res *plane_resp = data;
2360 struct drm_mode_config *config;
2361 struct drm_plane *plane;
2362 uint32_t __user *plane_ptr;
fcf93f69 2363 int copied = 0;
681e7ec7 2364 unsigned num_planes;
8cf5c917
JB		 2365
2366 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2367 return -EINVAL;
2368
8cf5c917
JB		 2369 config = &dev->mode_config;
2370
681e7ec7
MR		 2371 if (file_priv->universal_planes)
2372 num_planes = config->num_total_plane;
2373 else
2374 num_planes = config->num_overlay_plane;
2375
8cf5c917
JB		 2376 /*
2377 * This ioctl is called twice, once to determine how much space is
2378 * needed, and the 2nd time to fill it.
2379 */
681e7ec7
MR		 2380 if (num_planes &&
2381 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 2382 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917 2383
fcf93f69 2384 /* Plane lists are invariant, no locking needed. */
8cf5c917 2385 list_for_each_entry(plane, &config->plane_list, head) {
681e7ec7
MR		 2386 /*
2387 * Unless userspace set the 'universal planes'
2388 * capability bit, only advertise overlays.
2389 */
2390 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2391 !file_priv->universal_planes)
e27dde3e
MR		 2392 continue;
2393
fcf93f69
DV		 2394 if (put_user(plane->base.id, plane_ptr + copied))
2395 return -EFAULT;
8cf5c917
JB		 2396 copied++;
2397 }
2398 }
681e7ec7 2399 plane_resp->count_planes = num_planes;
8cf5c917 2400
fcf93f69 2401 return 0;
8cf5c917
JB		 2402}
2403
2404/**
c8e32cc1 2405 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2406 * @dev: DRM device
2407 * @data: ioctl data
2408 * @file_priv: DRM file info
2409 *
c8e32cc1
DV		 2410 * Construct a plane configuration structure to return to the user.
2411 *
2412 * Called by the user via ioctl.
2413 *
2414 * Returns:
1a498633 2415 * Zero on success, negative errno on failure.
8cf5c917
JB		 2416 */
2417int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2418 struct drm_file *file_priv)
8cf5c917
JB		 2419{
2420 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2421 struct drm_plane *plane;
2422 uint32_t __user *format_ptr;
8cf5c917
JB		 2423
2424 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2425 return -EINVAL;
2426
a2b34e22 2427 plane = drm_plane_find(dev, plane_resp->plane_id);
fcf93f69
DV		 2428 if (!plane)
2429 return -ENOENT;
8cf5c917 2430
fcf93f69 2431 drm_modeset_lock(&plane->mutex, NULL);
8cf5c917
JB		 2432 if (plane->crtc)
2433 plane_resp->crtc_id = plane->crtc->base.id;
2434 else
2435 plane_resp->crtc_id = 0;
2436
2437 if (plane->fb)
2438 plane_resp->fb_id = plane->fb->base.id;
2439 else
2440 plane_resp->fb_id = 0;
fcf93f69 2441 drm_modeset_unlock(&plane->mutex);
8cf5c917
JB		 2442
2443 plane_resp->plane_id = plane->base.id;
2444 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2445 plane_resp->gamma_size = 0;
8cf5c917
JB		 2446
2447 /*
2448 * This ioctl is called twice, once to determine how much space is
2449 * needed, and the 2nd time to fill it.
2450 */
2451 if (plane->format_count &&
2452 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2453 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2454 if (copy_to_user(format_ptr,
2455 plane->format_types,
2456 sizeof(uint32_t) * plane->format_count)) {
fcf93f69 2457 return -EFAULT;
8cf5c917
JB		 2458 }
2459 }
2460 plane_resp->count_format_types = plane->format_count;
2461
baf698b0 2462 return 0;
8cf5c917
JB		 2463}
2464
b36552b3
MR		 2465/*
2466 * setplane_internal - setplane handler for internal callers
8cf5c917 2467 *
b36552b3
MR		 2468 * Note that we assume an extra reference has already been taken on fb. If the
2469 * update fails, this reference will be dropped before return; if it succeeds,
2470 * the previous framebuffer (if any) will be unreferenced instead.
c8e32cc1 2471 *
b36552b3 2472 * src_{x,y,w,h} are provided in 16.16 fixed point format
8cf5c917 2473 */
f2b50c11
DV		 2474static int __setplane_internal(struct drm_plane *plane,
2475 struct drm_crtc *crtc,
2476 struct drm_framebuffer *fb,
2477 int32_t crtc_x, int32_t crtc_y,
2478 uint32_t crtc_w, uint32_t crtc_h,
2479 /* src_{x,y,w,h} values are 16.16 fixed point */
2480 uint32_t src_x, uint32_t src_y,
2481 uint32_t src_w, uint32_t src_h)
8cf5c917 2482{
8cf5c917 2483 int ret = 0;
42ef8789 2484 unsigned int fb_width, fb_height;
2f763312 2485 unsigned int i;
8cf5c917 2486
8cf5c917 2487 /* No fb means shut it down */
b36552b3 2488 if (!fb) {
3d30a59b 2489 plane->old_fb = plane->fb;
731cce48
DV		 2490 ret = plane->funcs->disable_plane(plane);
2491 if (!ret) {
2492 plane->crtc = NULL;
2493 plane->fb = NULL;
2494 } else {
3d30a59b 2495 plane->old_fb = NULL;
731cce48 2496 }
8cf5c917
JB		 2497 goto out;
2498 }
2499
7f994f3f
MR		 2500 /* Check whether this plane is usable on this CRTC */
2501 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2502 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2503 ret = -EINVAL;
2504 goto out;
2505 }
2506
62443be6
VS		 2507 /* Check whether this plane supports the fb pixel format. */
2508 for (i = 0; i < plane->format_count; i++)
2509 if (fb->pixel_format == plane->format_types[i])
2510 break;
2511 if (i == plane->format_count) {
6ba6d03e
VS		 2512 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2513 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2514 ret = -EINVAL;
2515 goto out;
2516 }
2517
42ef8789
VS		 2518 fb_width = fb->width << 16;
2519 fb_height = fb->height << 16;
2520
2521 /* Make sure source coordinates are inside the fb. */
b36552b3
MR		 2522 if (src_w > fb_width ||
2523 src_x > fb_width - src_w ||
2524 src_h > fb_height ||
2525 src_y > fb_height - src_h) {
42ef8789
VS		 2526 DRM_DEBUG_KMS("Invalid source coordinates "
2527 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
b36552b3
MR		 2528 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2529 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2530 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2531 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
42ef8789
VS		 2532 ret = -ENOSPC;
2533 goto out;
2534 }
2535
3d30a59b 2536 plane->old_fb = plane->fb;
8cf5c917 2537 ret = plane->funcs->update_plane(plane, crtc, fb,
b36552b3
MR		 2538 crtc_x, crtc_y, crtc_w, crtc_h,
2539 src_x, src_y, src_w, src_h);
8cf5c917
JB		 2540 if (!ret) {
2541 plane->crtc = crtc;
2542 plane->fb = fb;
35f8badc 2543 fb = NULL;
0fe27f06 2544 } else {
3d30a59b 2545 plane->old_fb = NULL;
8cf5c917
JB		 2546 }
2547
2548out:
6c2a7532
DV		 2549 if (fb)
2550 drm_framebuffer_unreference(fb);
3d30a59b
DV		 2551 if (plane->old_fb)
2552 drm_framebuffer_unreference(plane->old_fb);
2553 plane->old_fb = NULL;
8cf5c917
JB		 2554
2555 return ret;
f2b50c11 2556}
b36552b3 2557
f2b50c11
DV		 2558static int setplane_internal(struct drm_plane *plane,
2559 struct drm_crtc *crtc,
2560 struct drm_framebuffer *fb,
2561 int32_t crtc_x, int32_t crtc_y,
2562 uint32_t crtc_w, uint32_t crtc_h,
2563 /* src_{x,y,w,h} values are 16.16 fixed point */
2564 uint32_t src_x, uint32_t src_y,
2565 uint32_t src_w, uint32_t src_h)
2566{
2567 int ret;
2568
2569 drm_modeset_lock_all(plane->dev);
2570 ret = __setplane_internal(plane, crtc, fb,
2571 crtc_x, crtc_y, crtc_w, crtc_h,
2572 src_x, src_y, src_w, src_h);
2573 drm_modeset_unlock_all(plane->dev);
2574
2575 return ret;
b36552b3
MR		 2576}
2577
2578/**
2579 * drm_mode_setplane - configure a plane's configuration
2580 * @dev: DRM device
2581 * @data: ioctl data*
2582 * @file_priv: DRM file info
2583 *
2584 * Set plane configuration, including placement, fb, scaling, and other factors.
2585 * Or pass a NULL fb to disable (planes may be disabled without providing a
2586 * valid crtc).
2587 *
2588 * Returns:
1a498633 2589 * Zero on success, negative errno on failure.
b36552b3
MR		 2590 */
2591int drm_mode_setplane(struct drm_device *dev, void *data,
2592 struct drm_file *file_priv)
2593{
2594 struct drm_mode_set_plane *plane_req = data;
b36552b3
MR		 2595 struct drm_plane *plane;
2596 struct drm_crtc *crtc = NULL;
2597 struct drm_framebuffer *fb = NULL;
2598
2599 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2600 return -EINVAL;
2601
2602 /* Give drivers some help against integer overflows */
2603 if (plane_req->crtc_w > INT_MAX ||
2604 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2605 plane_req->crtc_h > INT_MAX ||
2606 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2607 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2608 plane_req->crtc_w, plane_req->crtc_h,
2609 plane_req->crtc_x, plane_req->crtc_y);
2610 return -ERANGE;
2611 }
2612
2613 /*
2614 * First, find the plane, crtc, and fb objects. If not available,
2615 * we don't bother to call the driver.
2616 */
933f622f
RC		 2617 plane = drm_plane_find(dev, plane_req->plane_id);
2618 if (!plane) {
b36552b3
MR		 2619 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2620 plane_req->plane_id);
2621 return -ENOENT;
2622 }
b36552b3
MR		 2623
2624 if (plane_req->fb_id) {
2625 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2626 if (!fb) {
2627 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2628 plane_req->fb_id);
2629 return -ENOENT;
2630 }
2631
933f622f
RC		 2632 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2633 if (!crtc) {
b36552b3
MR		 2634 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2635 plane_req->crtc_id);
2636 return -ENOENT;
2637 }
b36552b3
MR		 2638 }
2639
161d0dc1
MR		 2640 /*
2641 * setplane_internal will take care of deref'ing either the old or new
2642 * framebuffer depending on success.
2643 */
17cfd91f 2644 return setplane_internal(plane, crtc, fb,
b36552b3
MR		 2645 plane_req->crtc_x, plane_req->crtc_y,
2646 plane_req->crtc_w, plane_req->crtc_h,
2647 plane_req->src_x, plane_req->src_y,
2648 plane_req->src_w, plane_req->src_h);
8cf5c917
JB		 2649}
2650
2d13b679
DV		 2651/**
2652 * drm_mode_set_config_internal - helper to call ->set_config
2653 * @set: modeset config to set
2654 *
2655 * This is a little helper to wrap internal calls to the ->set_config driver
2656 * interface. The only thing it adds is correct refcounting dance.
4dfd909f 2657 *
c8e32cc1 2658 * Returns:
1a498633 2659 * Zero on success, negative errno on failure.
2d13b679
DV		 2660 */
2661int drm_mode_set_config_internal(struct drm_mode_set *set)
2662{
2663 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2664 struct drm_framebuffer *fb;
2665 struct drm_crtc *tmp;
b0d12325
DV		 2666 int ret;
2667
5cef29aa
DV		 2668 /*
2669 * NOTE: ->set_config can also disable other crtcs (if we steal all
2670 * connectors from it), hence we need to refcount the fbs across all
2671 * crtcs. Atomic modeset will have saner semantics ...
2672 */
2673 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
3d30a59b 2674 tmp->primary->old_fb = tmp->primary->fb;
5cef29aa 2675
b0d12325 2676 fb = set->fb;
2d13b679 2677
b0d12325
DV		 2678 ret = crtc->funcs->set_config(set);
2679 if (ret == 0) {
e13161af 2680 crtc->primary->crtc = crtc;
0fe27f06 2681 crtc->primary->fb = fb;
5cef29aa 2682 }
cc85e121 2683
5cef29aa 2684 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
f4510a27
MR		 2685 if (tmp->primary->fb)
2686 drm_framebuffer_reference(tmp->primary->fb);
3d30a59b
DV		 2687 if (tmp->primary->old_fb)
2688 drm_framebuffer_unreference(tmp->primary->old_fb);
2689 tmp->primary->old_fb = NULL;
b0d12325
DV		 2690 }
2691
2692 return ret;
2d13b679
DV		 2693}
2694EXPORT_SYMBOL(drm_mode_set_config_internal);
2695
ecb7e16b
GP		 2696/**
2697 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2698 * @mode: mode to query
2699 * @hdisplay: hdisplay value to fill in
2700 * @vdisplay: vdisplay value to fill in
2701 *
2702 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2703 * the appropriate layout.
2704 */
2705void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2706 int *hdisplay, int *vdisplay)
2707{
2708 struct drm_display_mode adjusted;
2709
2710 drm_mode_copy(&adjusted, mode);
2711 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2712 *hdisplay = adjusted.crtc_hdisplay;
2713 *vdisplay = adjusted.crtc_vdisplay;
2714}
2715EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2716
af93629d
MR		 2717/**
2718 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2719 * CRTC viewport
2720 * @crtc: CRTC that framebuffer will be displayed on
2721 * @x: x panning
2722 * @y: y panning
2723 * @mode: mode that framebuffer will be displayed under
2724 * @fb: framebuffer to check size of
c11e9283 2725 */
af93629d
MR		 2726int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2727 int x, int y,
2728 const struct drm_display_mode *mode,
2729 const struct drm_framebuffer *fb)
c11e9283
DL		 2730
2731{
2732 int hdisplay, vdisplay;
2733
ecb7e16b 2734 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
a0c1bbb0 2735
c11e9283
DL		 2736 if (crtc->invert_dimensions)
2737 swap(hdisplay, vdisplay);
2738
2739 if (hdisplay > fb->width ||
2740 vdisplay > fb->height ||
2741 x > fb->width - hdisplay ||
2742 y > fb->height - vdisplay) {
2743 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2744 fb->width, fb->height, hdisplay, vdisplay, x, y,
2745 crtc->invert_dimensions ? " (inverted)" : "");
2746 return -ENOSPC;
2747 }
2748
2749 return 0;
2750}
af93629d 2751EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2752
f453ba04
DA		 2753/**
2754 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2755 * @dev: drm device for the ioctl
2756 * @data: data pointer for the ioctl
2757 * @file_priv: drm file for the ioctl call
f453ba04 2758 *
f453ba04
DA		 2759 * Build a new CRTC configuration based on user request.
2760 *
2761 * Called by the user via ioctl.
2762 *
c8e32cc1 2763 * Returns:
1a498633 2764 * Zero on success, negative errno on failure.
f453ba04
DA		 2765 */
2766int drm_mode_setcrtc(struct drm_device *dev, void *data,
2767 struct drm_file *file_priv)
2768{
2769 struct drm_mode_config *config = &dev->mode_config;
2770 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2771 struct drm_crtc *crtc;
f453ba04
DA		 2772 struct drm_connector **connector_set = NULL, *connector;
2773 struct drm_framebuffer *fb = NULL;
2774 struct drm_display_mode *mode = NULL;
2775 struct drm_mode_set set;
2776 uint32_t __user *set_connectors_ptr;
4a1b0714 2777 int ret;
f453ba04
DA		 2778 int i;
2779
fb3b06c8
DA		 2780 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2781 return -EINVAL;
2782
1d97e915
VS		 2783 /* For some reason crtc x/y offsets are signed internally. */
2784 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2785 return -ERANGE;
2786
84849903 2787 drm_modeset_lock_all(dev);
a2b34e22
RC		 2788 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2789 if (!crtc) {
58367ed6 2790 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2791 ret = -ENOENT;
f453ba04
DA		 2792 goto out;
2793 }
9440106b 2794 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 2795
2796 if (crtc_req->mode_valid) {
2797 /* If we have a mode we need a framebuffer. */
2798 /* If we pass -1, set the mode with the currently bound fb */
2799 if (crtc_req->fb_id == -1) {
f4510a27 2800 if (!crtc->primary->fb) {
6653cc8d
VS		 2801 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2802 ret = -EINVAL;
2803 goto out;
f453ba04 2804 }
f4510a27 2805 fb = crtc->primary->fb;
b0d12325
DV		 2806 /* Make refcounting symmetric with the lookup path. */
2807 drm_framebuffer_reference(fb);
f453ba04 2808 } else {
786b99ed
DV		 2809 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2810 if (!fb) {
58367ed6
ZY		 2811 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2812 crtc_req->fb_id);
37c4e705 2813 ret = -ENOENT;
f453ba04
DA		 2814 goto out;
2815 }
f453ba04
DA		 2816 }
2817
2818 mode = drm_mode_create(dev);
ee34ab5b
VS		 2819 if (!mode) {
2820 ret = -ENOMEM;
2821 goto out;
2822 }
2823
90367bf6
VS		 2824 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2825 if (ret) {
2826 DRM_DEBUG_KMS("Invalid mode\n");
2827 goto out;
2828 }
2829
23e1ce89
VS		 2830 mode->status = drm_mode_validate_basic(mode);
2831 if (mode->status != MODE_OK) {
2832 ret = -EINVAL;
2833 goto out;
2834 }
2835
f453ba04 2836 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2837
c11e9283
DL		 2838 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2839 mode, fb);
2840 if (ret)
5f61bb42 2841 goto out;
c11e9283 2842
f453ba04
DA		 2843 }
2844
2845 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2846 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2847 ret = -EINVAL;
2848 goto out;
2849 }
2850
7781de74 2851 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2852 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2853 crtc_req->count_connectors);
2854 ret = -EINVAL;
2855 goto out;
2856 }
2857
2858 if (crtc_req->count_connectors > 0) {
2859 u32 out_id;
2860
2861 /* Avoid unbounded kernel memory allocation */
2862 if (crtc_req->count_connectors > config->num_connector) {
2863 ret = -EINVAL;
2864 goto out;
2865 }
2866
2f6c5389
TR		 2867 connector_set = kmalloc_array(crtc_req->count_connectors,
2868 sizeof(struct drm_connector *),
2869 GFP_KERNEL);
f453ba04
DA		 2870 if (!connector_set) {
2871 ret = -ENOMEM;
2872 goto out;
2873 }
2874
2875 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2876 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2877 if (get_user(out_id, &set_connectors_ptr[i])) {
2878 ret = -EFAULT;
2879 goto out;
2880 }
2881
a2b34e22
RC		 2882 connector = drm_connector_find(dev, out_id);
2883 if (!connector) {
58367ed6
ZY		 2884 DRM_DEBUG_KMS("Connector id %d unknown\n",
2885 out_id);
f27657f2 2886 ret = -ENOENT;
f453ba04
DA		 2887 goto out;
2888 }
9440106b
JG		 2889 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2890 connector->base.id,
25933820 2891 connector->name);
f453ba04
DA		 2892
2893 connector_set[i] = connector;
2894 }
2895 }
2896
2897 set.crtc = crtc;
2898 set.x = crtc_req->x;
2899 set.y = crtc_req->y;
2900 set.mode = mode;
2901 set.connectors = connector_set;
2902 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2903 set.fb = fb;
2d13b679 2904 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2905
2906out:
b0d12325
DV		 2907 if (fb)
2908 drm_framebuffer_unreference(fb);
2909
f453ba04 2910 kfree(connector_set);
ee34ab5b 2911 drm_mode_destroy(dev, mode);
84849903 2912 drm_modeset_unlock_all(dev);
f453ba04
DA		 2913 return ret;
2914}
2915
161d0dc1
MR		 2916/**
2917 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2918 * universal plane handler call
2919 * @crtc: crtc to update cursor for
2920 * @req: data pointer for the ioctl
2921 * @file_priv: drm file for the ioctl call
2922 *
2923 * Legacy cursor ioctl's work directly with driver buffer handles. To
2924 * translate legacy ioctl calls into universal plane handler calls, we need to
2925 * wrap the native buffer handle in a drm_framebuffer.
2926 *
2927 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2928 * buffer with a pitch of 4*width; the universal plane interface should be used
2929 * directly in cases where the hardware can support other buffer settings and
2930 * userspace wants to make use of these capabilities.
2931 *
2932 * Returns:
1a498633 2933 * Zero on success, negative errno on failure.
161d0dc1
MR		 2934 */
2935static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2936 struct drm_mode_cursor2 *req,
2937 struct drm_file *file_priv)
2938{
2939 struct drm_device *dev = crtc->dev;
2940 struct drm_framebuffer *fb = NULL;
2941 struct drm_mode_fb_cmd2 fbreq = {
2942 .width = req->width,
2943 .height = req->height,
2944 .pixel_format = DRM_FORMAT_ARGB8888,
2945 .pitches = { req->width * 4 },
2946 .handles = { req->handle },
2947 };
2948 int32_t crtc_x, crtc_y;
2949 uint32_t crtc_w = 0, crtc_h = 0;
2950 uint32_t src_w = 0, src_h = 0;
2951 int ret = 0;
2952
2953 BUG_ON(!crtc->cursor);
f2b50c11 2954 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
161d0dc1
MR		 2955
2956 /*
2957 * Obtain fb we'll be using (either new or existing) and take an extra
2958 * reference to it if fb != null. setplane will take care of dropping
2959 * the reference if the plane update fails.
2960 */
2961 if (req->flags & DRM_MODE_CURSOR_BO) {
2962 if (req->handle) {
2963 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2964 if (IS_ERR(fb)) {
2965 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2966 return PTR_ERR(fb);
2967 }
2968
2969 drm_framebuffer_reference(fb);
2970 } else {
2971 fb = NULL;
2972 }
2973 } else {
161d0dc1
MR		 2974 fb = crtc->cursor->fb;
2975 if (fb)
2976 drm_framebuffer_reference(fb);
161d0dc1
MR		 2977 }
2978
2979 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2980 crtc_x = req->x;
2981 crtc_y = req->y;
2982 } else {
2983 crtc_x = crtc->cursor_x;
2984 crtc_y = crtc->cursor_y;
2985 }
2986
2987 if (fb) {
2988 crtc_w = fb->width;
2989 crtc_h = fb->height;
2990 src_w = fb->width << 16;
2991 src_h = fb->height << 16;
2992 }
2993
2994 /*
2995 * setplane_internal will take care of deref'ing either the old or new
2996 * framebuffer depending on success.
2997 */
f2b50c11 2998 ret = __setplane_internal(crtc->cursor, crtc, fb,
161d0dc1
MR		 2999 crtc_x, crtc_y, crtc_w, crtc_h,
3000 0, 0, src_w, src_h);
3001
3002 /* Update successful; save new cursor position, if necessary */
3003 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
3004 crtc->cursor_x = req->x;
3005 crtc->cursor_y = req->y;
3006 }
3007
3008 return ret;
3009}
3010
4c813d4d
DA		 3011static int drm_mode_cursor_common(struct drm_device *dev,
3012 struct drm_mode_cursor2 *req,
3013 struct drm_file *file_priv)
f453ba04 3014{
f453ba04
DA		 3015 struct drm_crtc *crtc;
3016 int ret = 0;
3017
fb3b06c8
DA		 3018 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3019 return -EINVAL;
3020
7c4eaca4 3021 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 3022 return -EINVAL;
f453ba04 3023
a2b34e22
RC		 3024 crtc = drm_crtc_find(dev, req->crtc_id);
3025 if (!crtc) {
58367ed6 3026 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 3027 return -ENOENT;
f453ba04 3028 }
f453ba04 3029
161d0dc1
MR		 3030 /*
3031 * If this crtc has a universal cursor plane, call that plane's update
3032 * handler rather than using legacy cursor handlers.
3033 */
4d02e2de 3034 drm_modeset_lock_crtc(crtc, crtc->cursor);
f2b50c11
DV		 3035 if (crtc->cursor) {
3036 ret = drm_mode_cursor_universal(crtc, req, file_priv);
3037 goto out;
3038 }
3039
f453ba04 3040 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 3041 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 3042 ret = -ENXIO;
3043 goto out;
3044 }
3045 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 3046 if (crtc->funcs->cursor_set2)
3047 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
3048 req->width, req->height, req->hot_x, req->hot_y);
3049 else
3050 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
3051 req->width, req->height);
f453ba04
DA		 3052 }
3053
3054 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3055 if (crtc->funcs->cursor_move) {
3056 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3057 } else {
f453ba04
DA		 3058 ret = -EFAULT;
3059 goto out;
3060 }
3061 }
3062out:
d059f652 3063 drm_modeset_unlock_crtc(crtc);
dac35663 3064
f453ba04 3065 return ret;
4c813d4d
DA		 3066
3067}
c8e32cc1
DV		 3068
3069
3070/**
3071 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3072 * @dev: drm device for the ioctl
3073 * @data: data pointer for the ioctl
3074 * @file_priv: drm file for the ioctl call
3075 *
3076 * Set the cursor configuration based on user request.
3077 *
3078 * Called by the user via ioctl.
3079 *
3080 * Returns:
1a498633 3081 * Zero on success, negative errno on failure.
c8e32cc1 3082 */
4c813d4d 3083int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 3084 void *data, struct drm_file *file_priv)
4c813d4d
DA		 3085{
3086 struct drm_mode_cursor *req = data;
3087 struct drm_mode_cursor2 new_req;
3088
3089 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3090 new_req.hot_x = new_req.hot_y = 0;
3091
3092 return drm_mode_cursor_common(dev, &new_req, file_priv);
3093}
3094
c8e32cc1
DV		 3095/**
3096 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3097 * @dev: drm device for the ioctl
3098 * @data: data pointer for the ioctl
3099 * @file_priv: drm file for the ioctl call
3100 *
3101 * Set the cursor configuration based on user request. This implements the 2nd
3102 * version of the cursor ioctl, which allows userspace to additionally specify
3103 * the hotspot of the pointer.
3104 *
3105 * Called by the user via ioctl.
3106 *
3107 * Returns:
1a498633 3108 * Zero on success, negative errno on failure.
c8e32cc1 3109 */
4c813d4d
DA		 3110int drm_mode_cursor2_ioctl(struct drm_device *dev,
3111 void *data, struct drm_file *file_priv)
3112{
3113 struct drm_mode_cursor2 *req = data;
4dfd909f 3114
4c813d4d 3115 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 3116}
3117
c8e32cc1
DV		 3118/**
3119 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3120 * @bpp: bits per pixels
3121 * @depth: bit depth per pixel
3122 *
3123 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3124 * Useful in fbdev emulation code, since that deals in those values.
3125 */
308e5bcb
JB		 3126uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3127{
3128 uint32_t fmt;
3129
3130 switch (bpp) {
3131 case 8:
d84f031b 3132 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 3133 break;
3134 case 16:
3135 if (depth == 15)
04b3924d 3136 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 3137 else
04b3924d 3138 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 3139 break;
3140 case 24:
04b3924d 3141 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 3142 break;
3143 case 32:
3144 if (depth == 24)
04b3924d 3145 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 3146 else if (depth == 30)
04b3924d 3147 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 3148 else
04b3924d 3149 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 3150 break;
3151 default:
04b3924d
VS		 3152 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3153 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 3154 break;
3155 }
3156
3157 return fmt;
3158}
3159EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3160
f453ba04
DA		 3161/**
3162 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 3163 * @dev: drm device for the ioctl
3164 * @data: data pointer for the ioctl
3165 * @file_priv: drm file for the ioctl call
f453ba04 3166 *
c8e32cc1 3167 * Add a new FB to the specified CRTC, given a user request. This is the
209f5527 3168 * original addfb ioctl which only supported RGB formats.
f453ba04
DA		 3169 *
3170 * Called by the user via ioctl.
3171 *
c8e32cc1 3172 * Returns:
1a498633 3173 * Zero on success, negative errno on failure.
f453ba04
DA		 3174 */
3175int drm_mode_addfb(struct drm_device *dev,
3176 void *data, struct drm_file *file_priv)
3177{
308e5bcb
JB		 3178 struct drm_mode_fb_cmd *or = data;
3179 struct drm_mode_fb_cmd2 r = {};
228f2cb3 3180 int ret;
308e5bcb 3181
228f2cb3 3182 /* convert to new format and call new ioctl */
308e5bcb
JB		 3183 r.fb_id = or->fb_id;
3184 r.width = or->width;
3185 r.height = or->height;
3186 r.pitches[0] = or->pitch;
3187 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3188 r.handles[0] = or->handle;
3189
228f2cb3
CE		 3190 ret = drm_mode_addfb2(dev, &r, file_priv);
3191 if (ret)
3192 return ret;
308e5bcb 3193
228f2cb3 3194 or->fb_id = r.fb_id;
4b096ac1 3195
baf698b0 3196 return 0;
308e5bcb
JB		 3197}
3198
cff91b62 3199static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 3200{
3201 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3202
3203 switch (format) {
3204 case DRM_FORMAT_C8:
3205 case DRM_FORMAT_RGB332:
3206 case DRM_FORMAT_BGR233:
3207 case DRM_FORMAT_XRGB4444:
3208 case DRM_FORMAT_XBGR4444:
3209 case DRM_FORMAT_RGBX4444:
3210 case DRM_FORMAT_BGRX4444:
3211 case DRM_FORMAT_ARGB4444:
3212 case DRM_FORMAT_ABGR4444:
3213 case DRM_FORMAT_RGBA4444:
3214 case DRM_FORMAT_BGRA4444:
3215 case DRM_FORMAT_XRGB1555:
3216 case DRM_FORMAT_XBGR1555:
3217 case DRM_FORMAT_RGBX5551:
3218 case DRM_FORMAT_BGRX5551:
3219 case DRM_FORMAT_ARGB1555:
3220 case DRM_FORMAT_ABGR1555:
3221 case DRM_FORMAT_RGBA5551:
3222 case DRM_FORMAT_BGRA5551:
3223 case DRM_FORMAT_RGB565:
3224 case DRM_FORMAT_BGR565:
3225 case DRM_FORMAT_RGB888:
3226 case DRM_FORMAT_BGR888:
3227 case DRM_FORMAT_XRGB8888:
3228 case DRM_FORMAT_XBGR8888:
3229 case DRM_FORMAT_RGBX8888:
3230 case DRM_FORMAT_BGRX8888:
3231 case DRM_FORMAT_ARGB8888:
3232 case DRM_FORMAT_ABGR8888:
3233 case DRM_FORMAT_RGBA8888:
3234 case DRM_FORMAT_BGRA8888:
3235 case DRM_FORMAT_XRGB2101010:
3236 case DRM_FORMAT_XBGR2101010:
3237 case DRM_FORMAT_RGBX1010102:
3238 case DRM_FORMAT_BGRX1010102:
3239 case DRM_FORMAT_ARGB2101010:
3240 case DRM_FORMAT_ABGR2101010:
3241 case DRM_FORMAT_RGBA1010102:
3242 case DRM_FORMAT_BGRA1010102:
3243 case DRM_FORMAT_YUYV:
3244 case DRM_FORMAT_YVYU:
3245 case DRM_FORMAT_UYVY:
3246 case DRM_FORMAT_VYUY:
3247 case DRM_FORMAT_AYUV:
3248 case DRM_FORMAT_NV12:
3249 case DRM_FORMAT_NV21:
3250 case DRM_FORMAT_NV16:
3251 case DRM_FORMAT_NV61:
ba623f6a
LP		 3252 case DRM_FORMAT_NV24:
3253 case DRM_FORMAT_NV42:
935b5977
VS		 3254 case DRM_FORMAT_YUV410:
3255 case DRM_FORMAT_YVU410:
3256 case DRM_FORMAT_YUV411:
3257 case DRM_FORMAT_YVU411:
3258 case DRM_FORMAT_YUV420:
3259 case DRM_FORMAT_YVU420:
3260 case DRM_FORMAT_YUV422:
3261 case DRM_FORMAT_YVU422:
3262 case DRM_FORMAT_YUV444:
3263 case DRM_FORMAT_YVU444:
3264 return 0;
3265 default:
23c453a4
VS		 3266 DRM_DEBUG_KMS("invalid pixel format %s\n",
3267 drm_get_format_name(r->pixel_format));
935b5977
VS		 3268 return -EINVAL;
3269 }
3270}
3271
cff91b62 3272static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 3273{
3274 int ret, hsub, vsub, num_planes, i;
3275
3276 ret = format_check(r);
3277 if (ret) {
6ba6d03e
VS		 3278 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3279 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 3280 return ret;
3281 }
3282
3283 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3284 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3285 num_planes = drm_format_num_planes(r->pixel_format);
3286
3287 if (r->width == 0 || r->width % hsub) {
209f5527 3288 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
d1b45d5f
VS		 3289 return -EINVAL;
3290 }
3291
3292 if (r->height == 0 || r->height % vsub) {
1aa1b11c 3293 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 3294 return -EINVAL;
3295 }
3296
3297 for (i = 0; i < num_planes; i++) {
3298 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 3299 unsigned int height = r->height / (i != 0 ? vsub : 1);
3300 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 3301
3302 if (!r->handles[i]) {
1aa1b11c 3303 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 3304 return -EINVAL;
3305 }
3306
b180b5d1
VS		 3307 if ((uint64_t) width * cpp > UINT_MAX)
3308 return -ERANGE;
3309
3310 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3311 return -ERANGE;
3312
3313 if (r->pitches[i] < width * cpp) {
1aa1b11c 3314 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 3315 return -EINVAL;
3316 }
3317 }
3318
3319 return 0;
3320}
3321
c394c2b0
MR		 3322static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3323 struct drm_mode_fb_cmd2 *r,
3324 struct drm_file *file_priv)
308e5bcb 3325{
f453ba04
DA		 3326 struct drm_mode_config *config = &dev->mode_config;
3327 struct drm_framebuffer *fb;
4a1b0714 3328 int ret;
f453ba04 3329
e3cc3520
VS		 3330 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3331 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
c394c2b0 3332 return ERR_PTR(-EINVAL);
e3cc3520
VS		 3333 }
3334
f453ba04 3335 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 3336 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 3337 r->width, config->min_width, config->max_width);
c394c2b0 3338 return ERR_PTR(-EINVAL);
f453ba04
DA		 3339 }
3340 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 3341 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 3342 r->height, config->min_height, config->max_height);
c394c2b0 3343 return ERR_PTR(-EINVAL);
f453ba04
DA		 3344 }
3345
d1b45d5f
VS		 3346 ret = framebuffer_check(r);
3347 if (ret)
c394c2b0 3348 return ERR_PTR(ret);
935b5977 3349
f453ba04 3350 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 3351 if (IS_ERR(fb)) {
1aa1b11c 3352 DRM_DEBUG_KMS("could not create framebuffer\n");
c394c2b0 3353 return fb;
f453ba04
DA		 3354 }
3355
4b096ac1 3356 mutex_lock(&file_priv->fbs_lock);
e0c8463a 3357 r->fb_id = fb->base.id;
f453ba04 3358 list_add(&fb->filp_head, &file_priv->fbs);
9440106b 3359 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
4b096ac1 3360 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3361
c394c2b0
MR		 3362 return fb;
3363}
4b096ac1 3364
c394c2b0
MR		 3365/**
3366 * drm_mode_addfb2 - add an FB to the graphics configuration
3367 * @dev: drm device for the ioctl
3368 * @data: data pointer for the ioctl
3369 * @file_priv: drm file for the ioctl call
3370 *
3371 * Add a new FB to the specified CRTC, given a user request with format. This is
3372 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3373 * and uses fourcc codes as pixel format specifiers.
3374 *
3375 * Called by the user via ioctl.
3376 *
3377 * Returns:
1a498633 3378 * Zero on success, negative errno on failure.
c394c2b0
MR		 3379 */
3380int drm_mode_addfb2(struct drm_device *dev,
3381 void *data, struct drm_file *file_priv)
3382{
3383 struct drm_framebuffer *fb;
3384
3385 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3386 return -EINVAL;
3387
3388 fb = add_framebuffer_internal(dev, data, file_priv);
3389 if (IS_ERR(fb))
3390 return PTR_ERR(fb);
3391
3392 return 0;
f453ba04
DA		 3393}
3394
3395/**
3396 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 3397 * @dev: drm device for the ioctl
3398 * @data: data pointer for the ioctl
3399 * @file_priv: drm file for the ioctl call
f453ba04 3400 *
f453ba04
DA		 3401 * Remove the FB specified by the user.
3402 *
3403 * Called by the user via ioctl.
3404 *
c8e32cc1 3405 * Returns:
1a498633 3406 * Zero on success, negative errno on failure.
f453ba04
DA		 3407 */
3408int drm_mode_rmfb(struct drm_device *dev,
3409 void *data, struct drm_file *file_priv)
3410{
f453ba04
DA		 3411 struct drm_framebuffer *fb = NULL;
3412 struct drm_framebuffer *fbl = NULL;
3413 uint32_t *id = data;
f453ba04
DA		 3414 int found = 0;
3415
fb3b06c8
DA		 3416 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3417 return -EINVAL;
3418
4b096ac1 3419 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 3420 mutex_lock(&dev->mode_config.fb_lock);
3421 fb = __drm_framebuffer_lookup(dev, *id);
3422 if (!fb)
3423 goto fail_lookup;
3424
f453ba04
DA		 3425 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3426 if (fb == fbl)
3427 found = 1;
2b677e8c
DV		 3428 if (!found)
3429 goto fail_lookup;
3430
3431 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3432 __drm_framebuffer_unregister(dev, fb);
f453ba04 3433
4b096ac1 3434 list_del_init(&fb->filp_head);
2b677e8c 3435 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 3436 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3437
4b096ac1 3438 drm_framebuffer_remove(fb);
4b096ac1 3439
2b677e8c
DV		 3440 return 0;
3441
3442fail_lookup:
3443 mutex_unlock(&dev->mode_config.fb_lock);
3444 mutex_unlock(&file_priv->fbs_lock);
3445
37c4e705 3446 return -ENOENT;
f453ba04
DA		 3447}
3448
3449/**
3450 * drm_mode_getfb - get FB info
065a50ed
DV		 3451 * @dev: drm device for the ioctl
3452 * @data: data pointer for the ioctl
3453 * @file_priv: drm file for the ioctl call
f453ba04 3454 *
f453ba04
DA		 3455 * Lookup the FB given its ID and return info about it.
3456 *
3457 * Called by the user via ioctl.
3458 *
c8e32cc1 3459 * Returns:
1a498633 3460 * Zero on success, negative errno on failure.
f453ba04
DA		 3461 */
3462int drm_mode_getfb(struct drm_device *dev,
3463 void *data, struct drm_file *file_priv)
3464{
3465 struct drm_mode_fb_cmd *r = data;
f453ba04 3466 struct drm_framebuffer *fb;
58c0dca1 3467 int ret;
f453ba04 3468
fb3b06c8
DA		 3469 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3470 return -EINVAL;
3471
786b99ed 3472 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 3473 if (!fb)
37c4e705 3474 return -ENOENT;
f453ba04
DA		 3475
3476 r->height = fb->height;
3477 r->width = fb->width;
3478 r->depth = fb->depth;
3479 r->bpp = fb->bits_per_pixel;
01f2c773 3480 r->pitch = fb->pitches[0];
101b96f3 3481 if (fb->funcs->create_handle) {
09f308f7 3482 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 3483 drm_is_control_client(file_priv)) {
101b96f3
DH		 3484 ret = fb->funcs->create_handle(fb, file_priv,
3485 &r->handle);
3486 } else {
3487 /* GET_FB() is an unprivileged ioctl so we must not
3488 * return a buffer-handle to non-master processes! For
3489 * backwards-compatibility reasons, we cannot make
3490 * GET_FB() privileged, so just return an invalid handle
3491 * for non-masters. */
3492 r->handle = 0;
3493 ret = 0;
3494 }
3495 } else {
af26ef3b 3496 ret = -ENODEV;
101b96f3 3497 }
f453ba04 3498
58c0dca1
DV		 3499 drm_framebuffer_unreference(fb);
3500
f453ba04
DA		 3501 return ret;
3502}
3503
c8e32cc1
DV		 3504/**
3505 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3506 * @dev: drm device for the ioctl
3507 * @data: data pointer for the ioctl
3508 * @file_priv: drm file for the ioctl call
3509 *
3510 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3511 * rectangle list. Generic userspace which does frontbuffer rendering must call
3512 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3513 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3514 *
3515 * Modesetting drivers which always update the frontbuffer do not need to
3516 * implement the corresponding ->dirty framebuffer callback.
3517 *
3518 * Called by the user via ioctl.
3519 *
3520 * Returns:
1a498633 3521 * Zero on success, negative errno on failure.
c8e32cc1 3522 */
884840aa
JB		 3523int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3524 void *data, struct drm_file *file_priv)
3525{
3526 struct drm_clip_rect __user *clips_ptr;
3527 struct drm_clip_rect *clips = NULL;
3528 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 3529 struct drm_framebuffer *fb;
3530 unsigned flags;
3531 int num_clips;
4a1b0714 3532 int ret;
884840aa 3533
fb3b06c8
DA		 3534 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3535 return -EINVAL;
3536
786b99ed 3537 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 3538 if (!fb)
37c4e705 3539 return -ENOENT;
884840aa
JB		 3540
3541 num_clips = r->num_clips;
81f6c7f8 3542 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 3543
3544 if (!num_clips != !clips_ptr) {
3545 ret = -EINVAL;
3546 goto out_err1;
3547 }
3548
3549 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3550
3551 /* If userspace annotates copy, clips must come in pairs */
3552 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3553 ret = -EINVAL;
3554 goto out_err1;
3555 }
3556
3557 if (num_clips && clips_ptr) {
a5cd3351
XW		 3558 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3559 ret = -EINVAL;
3560 goto out_err1;
3561 }
bd3f0ff9 3562 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
884840aa
JB		 3563 if (!clips) {
3564 ret = -ENOMEM;
3565 goto out_err1;
3566 }
3567
3568 ret = copy_from_user(clips, clips_ptr,
3569 num_clips * sizeof(*clips));
e902a358
DC		 3570 if (ret) {
3571 ret = -EFAULT;
884840aa 3572 goto out_err2;
e902a358 3573 }
884840aa
JB		 3574 }
3575
3576 if (fb->funcs->dirty) {
02b00162
TH		 3577 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3578 clips, num_clips);
884840aa
JB		 3579 } else {
3580 ret = -ENOSYS;
884840aa
JB		 3581 }
3582
3583out_err2:
3584 kfree(clips);
3585out_err1:
4ccf097f
DV		 3586 drm_framebuffer_unreference(fb);
3587
884840aa
JB		 3588 return ret;
3589}
3590
3591
f453ba04
DA		 3592/**
3593 * drm_fb_release - remove and free the FBs on this file
065a50ed 3594 * @priv: drm file for the ioctl
f453ba04 3595 *
f453ba04
DA		 3596 * Destroy all the FBs associated with @filp.
3597 *
3598 * Called by the user via ioctl.
3599 *
c8e32cc1 3600 * Returns:
1a498633 3601 * Zero on success, negative errno on failure.
f453ba04 3602 */
ea39f835 3603void drm_fb_release(struct drm_file *priv)
f453ba04 3604{
f453ba04
DA		 3605 struct drm_device *dev = priv->minor->dev;
3606 struct drm_framebuffer *fb, *tfb;
3607
1b116297
DV		 3608 /*
3609 * When the file gets released that means no one else can access the fb
e2db726b 3610 * list any more, so no need to grab fpriv->fbs_lock. And we need to
1b116297
DV		 3611 * avoid upsetting lockdep since the universal cursor code adds a
3612 * framebuffer while holding mutex locks.
3613 *
3614 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3615 * locks is impossible here since no one else but this function can get
3616 * at it any more.
3617 */
f453ba04 3618 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2b677e8c
DV		 3619
3620 mutex_lock(&dev->mode_config.fb_lock);
3621 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3622 __drm_framebuffer_unregister(dev, fb);
3623 mutex_unlock(&dev->mode_config.fb_lock);
3624
4b096ac1 3625 list_del_init(&fb->filp_head);
2b677e8c
DV		 3626
3627 /* This will also drop the fpriv->fbs reference. */
f7eff60e 3628 drm_framebuffer_remove(fb);
f453ba04 3629 }
f453ba04
DA		 3630}
3631
c8e32cc1
DV		 3632/**
3633 * drm_property_create - create a new property type
3634 * @dev: drm device
3635 * @flags: flags specifying the property type
3636 * @name: name of the property
3637 * @num_values: number of pre-defined values
3638 *
3639 * This creates a new generic drm property which can then be attached to a drm
3640 * object with drm_object_attach_property. The returned property object must be
3641 * freed with drm_property_destroy.
3642 *
3b5b9932
DL		 3643 * Note that the DRM core keeps a per-device list of properties and that, if
3644 * drm_mode_config_cleanup() is called, it will destroy all properties created
3645 * by the driver.
3646 *
c8e32cc1
DV		 3647 * Returns:
3648 * A pointer to the newly created property on success, NULL on failure.
3649 */
f453ba04
DA		 3650struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3651 const char *name, int num_values)
3652{
3653 struct drm_property *property = NULL;
6bfc56aa 3654 int ret;
f453ba04
DA		 3655
3656 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3657 if (!property)
3658 return NULL;
3659
98f75de4
RC		 3660 property->dev = dev;
3661
f453ba04 3662 if (num_values) {
bd3f0ff9
TR		 3663 property->values = kcalloc(num_values, sizeof(uint64_t),
3664 GFP_KERNEL);
f453ba04
DA		 3665 if (!property->values)
3666 goto fail;
3667 }
3668
6bfc56aa
VS		 3669 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3670 if (ret)
3671 goto fail;
3672
f453ba04
DA		 3673 property->flags = flags;
3674 property->num_values = num_values;
3758b341 3675 INIT_LIST_HEAD(&property->enum_list);
f453ba04 3676
471dd2ef 3677 if (name) {
f453ba04 3678 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3679 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3680 }
f453ba04
DA		 3681
3682 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3683
3684 WARN_ON(!drm_property_type_valid(property));
3685
f453ba04
DA		 3686 return property;
3687fail:
6bfc56aa 3688 kfree(property->values);
f453ba04
DA		 3689 kfree(property);
3690 return NULL;
3691}
3692EXPORT_SYMBOL(drm_property_create);
3693
c8e32cc1 3694/**
2aa9d2bc 3695 * drm_property_create_enum - create a new enumeration property type
c8e32cc1
DV		 3696 * @dev: drm device
3697 * @flags: flags specifying the property type
3698 * @name: name of the property
3699 * @props: enumeration lists with property values
3700 * @num_values: number of pre-defined values
3701 *
3702 * This creates a new generic drm property which can then be attached to a drm
3703 * object with drm_object_attach_property. The returned property object must be
3704 * freed with drm_property_destroy.
3705 *
3706 * Userspace is only allowed to set one of the predefined values for enumeration
3707 * properties.
3708 *
3709 * Returns:
3710 * A pointer to the newly created property on success, NULL on failure.
3711 */
4a67d391
SH		 3712struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3713 const char *name,
3714 const struct drm_prop_enum_list *props,
3715 int num_values)
3716{
3717 struct drm_property *property;
3718 int i, ret;
3719
3720 flags |= DRM_MODE_PROP_ENUM;
3721
3722 property = drm_property_create(dev, flags, name, num_values);
3723 if (!property)
3724 return NULL;
3725
3726 for (i = 0; i < num_values; i++) {
3727 ret = drm_property_add_enum(property, i,
3728 props[i].type,
3729 props[i].name);
3730 if (ret) {
3731 drm_property_destroy(dev, property);
3732 return NULL;
3733 }
3734 }
3735
3736 return property;
3737}
3738EXPORT_SYMBOL(drm_property_create_enum);
3739
c8e32cc1 3740/**
2aa9d2bc 3741 * drm_property_create_bitmask - create a new bitmask property type
c8e32cc1
DV		 3742 * @dev: drm device
3743 * @flags: flags specifying the property type
3744 * @name: name of the property
3745 * @props: enumeration lists with property bitflags
295ee853
DV		 3746 * @num_props: size of the @props array
3747 * @supported_bits: bitmask of all supported enumeration values
c8e32cc1 3748 *
295ee853 3749 * This creates a new bitmask drm property which can then be attached to a drm
c8e32cc1
DV		 3750 * object with drm_object_attach_property. The returned property object must be
3751 * freed with drm_property_destroy.
3752 *
3753 * Compared to plain enumeration properties userspace is allowed to set any
3754 * or'ed together combination of the predefined property bitflag values
3755 *
3756 * Returns:
3757 * A pointer to the newly created property on success, NULL on failure.
3758 */
49e27545
RC		 3759struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3760 int flags, const char *name,
3761 const struct drm_prop_enum_list *props,
7689ffb3
VS		 3762 int num_props,
3763 uint64_t supported_bits)
49e27545
RC		 3764{
3765 struct drm_property *property;
7689ffb3
VS		 3766 int i, ret, index = 0;
3767 int num_values = hweight64(supported_bits);
49e27545
RC		 3768
3769 flags |= DRM_MODE_PROP_BITMASK;
3770
3771 property = drm_property_create(dev, flags, name, num_values);
3772 if (!property)
3773 return NULL;
7689ffb3
VS		 3774 for (i = 0; i < num_props; i++) {
3775 if (!(supported_bits & (1ULL << props[i].type)))
3776 continue;
49e27545 3777
7689ffb3
VS		 3778 if (WARN_ON(index >= num_values)) {
3779 drm_property_destroy(dev, property);
3780 return NULL;
3781 }
3782
3783 ret = drm_property_add_enum(property, index++,
49e27545
RC		 3784 props[i].type,
3785 props[i].name);
3786 if (ret) {
3787 drm_property_destroy(dev, property);
3788 return NULL;
3789 }
3790 }
3791
3792 return property;
3793}
3794EXPORT_SYMBOL(drm_property_create_bitmask);
3795
ebc44cf3
RC		 3796static struct drm_property *property_create_range(struct drm_device *dev,
3797 int flags, const char *name,
3798 uint64_t min, uint64_t max)
3799{
3800 struct drm_property *property;
3801
3802 property = drm_property_create(dev, flags, name, 2);
3803 if (!property)
3804 return NULL;
3805
3806 property->values[0] = min;
3807 property->values[1] = max;
3808
3809 return property;
3810}
3811
c8e32cc1 3812/**
2aa9d2bc 3813 * drm_property_create_range - create a new ranged property type
c8e32cc1
DV		 3814 * @dev: drm device
3815 * @flags: flags specifying the property type
3816 * @name: name of the property
3817 * @min: minimum value of the property
3818 * @max: maximum value of the property
3819 *
3820 * This creates a new generic drm property which can then be attached to a drm
3821 * object with drm_object_attach_property. The returned property object must be
3822 * freed with drm_property_destroy.
3823 *
32197aab 3824 * Userspace is allowed to set any integer value in the (min, max) range
c8e32cc1
DV		 3825 * inclusive.
3826 *
3827 * Returns:
3828 * A pointer to the newly created property on success, NULL on failure.
3829 */
d9bc3c02
SH		 3830struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3831 const char *name,
3832 uint64_t min, uint64_t max)
3833{
ebc44cf3
RC		 3834 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3835 name, min, max);
d9bc3c02
SH		 3836}
3837EXPORT_SYMBOL(drm_property_create_range);
3838
ebc44cf3
RC		 3839struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3840 int flags, const char *name,
3841 int64_t min, int64_t max)
3842{
3843 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3844 name, I642U64(min), I642U64(max));
3845}
3846EXPORT_SYMBOL(drm_property_create_signed_range);
3847
98f75de4
RC		 3848struct drm_property *drm_property_create_object(struct drm_device *dev,
3849 int flags, const char *name, uint32_t type)
3850{
3851 struct drm_property *property;
3852
3853 flags |= DRM_MODE_PROP_OBJECT;
3854
3855 property = drm_property_create(dev, flags, name, 1);
3856 if (!property)
3857 return NULL;
3858
3859 property->values[0] = type;
3860
3861 return property;
3862}
3863EXPORT_SYMBOL(drm_property_create_object);
3864
c8e32cc1
DV		 3865/**
3866 * drm_property_add_enum - add a possible value to an enumeration property
3867 * @property: enumeration property to change
3868 * @index: index of the new enumeration
3869 * @value: value of the new enumeration
3870 * @name: symbolic name of the new enumeration
3871 *
3872 * This functions adds enumerations to a property.
3873 *
3874 * It's use is deprecated, drivers should use one of the more specific helpers
3875 * to directly create the property with all enumerations already attached.
3876 *
3877 * Returns:
3878 * Zero on success, error code on failure.
3879 */
f453ba04
DA		 3880int drm_property_add_enum(struct drm_property *property, int index,
3881 uint64_t value, const char *name)
3882{
3883 struct drm_property_enum *prop_enum;
3884
5ea22f24
RC		 3885 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3886 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 3887 return -EINVAL;
3888
3889 /*
3890 * Bitmask enum properties have the additional constraint of values
3891 * from 0 to 63
3892 */
5ea22f24
RC		 3893 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3894 (value > 63))
f453ba04
DA		 3895 return -EINVAL;
3896
3758b341
DV		 3897 if (!list_empty(&property->enum_list)) {
3898 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 3899 if (prop_enum->value == value) {
3900 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3901 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3902 return 0;
3903 }
3904 }
3905 }
3906
3907 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3908 if (!prop_enum)
3909 return -ENOMEM;
3910
3911 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3912 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3913 prop_enum->value = value;
3914
3915 property->values[index] = value;
3758b341 3916 list_add_tail(&prop_enum->head, &property->enum_list);
f453ba04
DA		 3917 return 0;
3918}
3919EXPORT_SYMBOL(drm_property_add_enum);
3920
c8e32cc1
DV		 3921/**
3922 * drm_property_destroy - destroy a drm property
3923 * @dev: drm device
3924 * @property: property to destry
3925 *
3926 * This function frees a property including any attached resources like
3927 * enumeration values.
3928 */
f453ba04
DA		 3929void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3930{
3931 struct drm_property_enum *prop_enum, *pt;
3932
3758b341 3933 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
f453ba04
DA		 3934 list_del(&prop_enum->head);
3935 kfree(prop_enum);
3936 }
3937
3938 if (property->num_values)
3939 kfree(property->values);
3940 drm_mode_object_put(dev, &property->base);
3941 list_del(&property->head);
3942 kfree(property);
3943}
3944EXPORT_SYMBOL(drm_property_destroy);
3945
c8e32cc1
DV		 3946/**
3947 * drm_object_attach_property - attach a property to a modeset object
3948 * @obj: drm modeset object
3949 * @property: property to attach
3950 * @init_val: initial value of the property
3951 *
3952 * This attaches the given property to the modeset object with the given initial
3953 * value. Currently this function cannot fail since the properties are stored in
3954 * a statically sized array.
3955 */
c543188a
PZ		 3956void drm_object_attach_property(struct drm_mode_object *obj,
3957 struct drm_property *property,
3958 uint64_t init_val)
3959{
7f88a9be 3960 int count = obj->properties->count;
c543188a 3961
7f88a9be
PZ		 3962 if (count == DRM_OBJECT_MAX_PROPERTY) {
3963 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3964 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3965 "you see this message on the same object type.\n",
3966 obj->type);
3967 return;
c543188a
PZ		 3968 }
3969
b17cd757 3970 obj->properties->properties[count] = property;
7f88a9be
PZ		 3971 obj->properties->values[count] = init_val;
3972 obj->properties->count++;
88a48e29
RC		 3973 if (property->flags & DRM_MODE_PROP_ATOMIC)
3974 obj->properties->atomic_count++;
c543188a
PZ		 3975}
3976EXPORT_SYMBOL(drm_object_attach_property);
3977
c8e32cc1
DV		 3978/**
3979 * drm_object_property_set_value - set the value of a property
3980 * @obj: drm mode object to set property value for
3981 * @property: property to set
3982 * @val: value the property should be set to
3983 *
3984 * This functions sets a given property on a given object. This function only
3985 * changes the software state of the property, it does not call into the
3986 * driver's ->set_property callback.
3987 *
3988 * Returns:
3989 * Zero on success, error code on failure.
3990 */
c543188a
PZ		 3991int drm_object_property_set_value(struct drm_mode_object *obj,
3992 struct drm_property *property, uint64_t val)
3993{
3994 int i;
3995
7f88a9be 3996 for (i = 0; i < obj->properties->count; i++) {
b17cd757 3997 if (obj->properties->properties[i] == property) {
c543188a
PZ		 3998 obj->properties->values[i] = val;
3999 return 0;
4000 }
4001 }
4002
4003 return -EINVAL;
4004}
4005EXPORT_SYMBOL(drm_object_property_set_value);
4006
c8e32cc1
DV		 4007/**
4008 * drm_object_property_get_value - retrieve the value of a property
4009 * @obj: drm mode object to get property value from
4010 * @property: property to retrieve
4011 * @val: storage for the property value
4012 *
4013 * This function retrieves the softare state of the given property for the given
4014 * property. Since there is no driver callback to retrieve the current property
4015 * value this might be out of sync with the hardware, depending upon the driver
4016 * and property.
4017 *
4018 * Returns:
4019 * Zero on success, error code on failure.
4020 */
c543188a
PZ		 4021int drm_object_property_get_value(struct drm_mode_object *obj,
4022 struct drm_property *property, uint64_t *val)
4023{
4024 int i;
4025
88a48e29
RC		 4026 /* read-only properties bypass atomic mechanism and still store
4027 * their value in obj->properties->values[].. mostly to avoid
4028 * having to deal w/ EDID and similar props in atomic paths:
4029 */
4030 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4031 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4032 return drm_atomic_get_property(obj, property, val);
4033
7f88a9be 4034 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4035 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4036 *val = obj->properties->values[i];
4037 return 0;
4038 }
4039 }
4040
4041 return -EINVAL;
4042}
4043EXPORT_SYMBOL(drm_object_property_get_value);
4044
c8e32cc1 4045/**
1a498633 4046 * drm_mode_getproperty_ioctl - get the property metadata
c8e32cc1
DV		 4047 * @dev: DRM device
4048 * @data: ioctl data
4049 * @file_priv: DRM file info
4050 *
1a498633
DV		 4051 * This function retrieves the metadata for a given property, like the different
4052 * possible values for an enum property or the limits for a range property.
4053 *
4054 * Blob properties are special
c8e32cc1
DV		 4055 *
4056 * Called by the user via ioctl.
4057 *
4058 * Returns:
1a498633 4059 * Zero on success, negative errno on failure.
c8e32cc1 4060 */
f453ba04
DA		 4061int drm_mode_getproperty_ioctl(struct drm_device *dev,
4062 void *data, struct drm_file *file_priv)
4063{
f453ba04
DA		 4064 struct drm_mode_get_property *out_resp = data;
4065 struct drm_property *property;
4066 int enum_count = 0;
f453ba04
DA		 4067 int value_count = 0;
4068 int ret = 0, i;
4069 int copied;
4070 struct drm_property_enum *prop_enum;
4071 struct drm_mode_property_enum __user *enum_ptr;
f453ba04 4072 uint64_t __user *values_ptr;
f453ba04 4073
fb3b06c8
DA		 4074 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4075 return -EINVAL;
4076
84849903 4077 drm_modeset_lock_all(dev);
a2b34e22
RC		 4078 property = drm_property_find(dev, out_resp->prop_id);
4079 if (!property) {
f27657f2 4080 ret = -ENOENT;
f453ba04
DA		 4081 goto done;
4082 }
f453ba04 4083
5ea22f24
RC		 4084 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4085 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3758b341 4086 list_for_each_entry(prop_enum, &property->enum_list, head)
f453ba04 4087 enum_count++;
f453ba04
DA		 4088 }
4089
4090 value_count = property->num_values;
4091
4092 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4093 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4094 out_resp->flags = property->flags;
4095
4096 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 4097 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 4098 for (i = 0; i < value_count; i++) {
4099 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4100 ret = -EFAULT;
4101 goto done;
4102 }
4103 }
4104 }
4105 out_resp->count_values = value_count;
4106
5ea22f24
RC		 4107 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4108 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 4109 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4110 copied = 0;
81f6c7f8 4111 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3758b341 4112 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 4113
4114 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4115 ret = -EFAULT;
4116 goto done;
4117 }
4118
4119 if (copy_to_user(&enum_ptr[copied].name,
4120 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4121 ret = -EFAULT;
4122 goto done;
4123 }
4124 copied++;
4125 }
4126 }
4127 out_resp->count_enum_blobs = enum_count;
4128 }
4129
3758b341
DV		 4130 /*
4131 * NOTE: The idea seems to have been to use this to read all the blob
4132 * property values. But nothing ever added them to the corresponding
4133 * list, userspace always used the special-purpose get_blob ioctl to
4134 * read the value for a blob property. It also doesn't make a lot of
4135 * sense to return values here when everything else is just metadata for
4136 * the property itself.
4137 */
4138 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4139 out_resp->count_enum_blobs = 0;
f453ba04 4140done:
84849903 4141 drm_modeset_unlock_all(dev);
f453ba04
DA		 4142 return ret;
4143}
4144
ecbbe59b
TR		 4145static struct drm_property_blob *
4146drm_property_create_blob(struct drm_device *dev, size_t length,
12e6cecd 4147 const void *data)
f453ba04
DA		 4148{
4149 struct drm_property_blob *blob;
6bfc56aa 4150 int ret;
f453ba04
DA		 4151
4152 if (!length || !data)
4153 return NULL;
4154
4155 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4156 if (!blob)
4157 return NULL;
4158
6bfc56aa
VS		 4159 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4160 if (ret) {
4161 kfree(blob);
4162 return NULL;
4163 }
4164
f453ba04
DA		 4165 blob->length = length;
4166
4167 memcpy(blob->data, data, length);
4168
f453ba04
DA		 4169 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4170 return blob;
4171}
4172
4173static void drm_property_destroy_blob(struct drm_device *dev,
4174 struct drm_property_blob *blob)
4175{
4176 drm_mode_object_put(dev, &blob->base);
4177 list_del(&blob->head);
4178 kfree(blob);
4179}
4180
c8e32cc1
DV		 4181/**
4182 * drm_mode_getblob_ioctl - get the contents of a blob property value
4183 * @dev: DRM device
4184 * @data: ioctl data
4185 * @file_priv: DRM file info
4186 *
4187 * This function retrieves the contents of a blob property. The value stored in
4188 * an object's blob property is just a normal modeset object id.
4189 *
4190 * Called by the user via ioctl.
4191 *
4192 * Returns:
1a498633 4193 * Zero on success, negative errno on failure.
c8e32cc1 4194 */
f453ba04
DA		 4195int drm_mode_getblob_ioctl(struct drm_device *dev,
4196 void *data, struct drm_file *file_priv)
4197{
f453ba04
DA		 4198 struct drm_mode_get_blob *out_resp = data;
4199 struct drm_property_blob *blob;
4200 int ret = 0;
81f6c7f8 4201 void __user *blob_ptr;
f453ba04 4202
fb3b06c8
DA		 4203 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4204 return -EINVAL;
4205
84849903 4206 drm_modeset_lock_all(dev);
a2b34e22
RC		 4207 blob = drm_property_blob_find(dev, out_resp->blob_id);
4208 if (!blob) {
f27657f2 4209 ret = -ENOENT;
f453ba04
DA		 4210 goto done;
4211 }
f453ba04
DA		 4212
4213 if (out_resp->length == blob->length) {
81f6c7f8 4214 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4dfd909f 4215 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
f453ba04
DA		 4216 ret = -EFAULT;
4217 goto done;
4218 }
4219 }
4220 out_resp->length = blob->length;
4221
4222done:
84849903 4223 drm_modeset_unlock_all(dev);
f453ba04
DA		 4224 return ret;
4225}
4226
cc7096fb
DA		 4227/**
4228 * drm_mode_connector_set_path_property - set tile property on connector
4229 * @connector: connector to set property on.
4230 * @path: path to use for property.
4231 *
4232 * This creates a property to expose to userspace to specify a
4233 * connector path. This is mainly used for DisplayPort MST where
4234 * connectors have a topology and we want to allow userspace to give
4235 * them more meaningful names.
4236 *
4237 * Returns:
1a498633 4238 * Zero on success, negative errno on failure.
cc7096fb 4239 */
43aba7eb 4240int drm_mode_connector_set_path_property(struct drm_connector *connector,
12e6cecd 4241 const char *path)
43aba7eb
DA		 4242{
4243 struct drm_device *dev = connector->dev;
ecbbe59b
TR		 4244 size_t size = strlen(path) + 1;
4245 int ret;
43aba7eb
DA		 4246
4247 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4248 size, path);
4249 if (!connector->path_blob_ptr)
4250 return -EINVAL;
4251
4252 ret = drm_object_property_set_value(&connector->base,
4253 dev->mode_config.path_property,
4254 connector->path_blob_ptr->base.id);
4255 return ret;
4256}
4257EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4258
6f134d7b
DA		 4259/**
4260 * drm_mode_connector_set_tile_property - set tile property on connector
4261 * @connector: connector to set property on.
4262 *
4263 * This looks up the tile information for a connector, and creates a
4264 * property for userspace to parse if it exists. The property is of
4265 * the form of 8 integers using ':' as a separator.
4266 *
4267 * Returns:
4268 * Zero on success, errno on failure.
4269 */
4270int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4271{
4272 struct drm_device *dev = connector->dev;
4273 int ret, size;
4274 char tile[256];
4275
4276 if (connector->tile_blob_ptr)
4277 drm_property_destroy_blob(dev, connector->tile_blob_ptr);
4278
4279 if (!connector->has_tile) {
4280 connector->tile_blob_ptr = NULL;
4281 ret = drm_object_property_set_value(&connector->base,
4282 dev->mode_config.tile_property, 0);
4283 return ret;
4284 }
4285
4286 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4287 connector->tile_group->id, connector->tile_is_single_monitor,
4288 connector->num_h_tile, connector->num_v_tile,
4289 connector->tile_h_loc, connector->tile_v_loc,
4290 connector->tile_h_size, connector->tile_v_size);
4291 size = strlen(tile) + 1;
4292
4293 connector->tile_blob_ptr = drm_property_create_blob(connector->dev,
4294 size, tile);
4295 if (!connector->tile_blob_ptr)
4296 return -EINVAL;
4297
4298 ret = drm_object_property_set_value(&connector->base,
4299 dev->mode_config.tile_property,
4300 connector->tile_blob_ptr->base.id);
4301 return ret;
4302}
4303EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4304
c8e32cc1
DV		 4305/**
4306 * drm_mode_connector_update_edid_property - update the edid property of a connector
4307 * @connector: drm connector
4308 * @edid: new value of the edid property
4309 *
4310 * This function creates a new blob modeset object and assigns its id to the
4311 * connector's edid property.
4312 *
4313 * Returns:
1a498633 4314 * Zero on success, negative errno on failure.
c8e32cc1 4315 */
f453ba04 4316int drm_mode_connector_update_edid_property(struct drm_connector *connector,
12e6cecd 4317 const struct edid *edid)
f453ba04
DA		 4318{
4319 struct drm_device *dev = connector->dev;
ecbbe59b
TR		 4320 size_t size;
4321 int ret;
f453ba04 4322
4cf2b281
TW		 4323 /* ignore requests to set edid when overridden */
4324 if (connector->override_edid)
4325 return 0;
4326
f453ba04
DA		 4327 if (connector->edid_blob_ptr)
4328 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4329
4330 /* Delete edid, when there is none. */
4331 if (!edid) {
4332 connector->edid_blob_ptr = NULL;
58495563 4333 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
f453ba04
DA		 4334 return ret;
4335 }
4336
7466f4cc
AJ		 4337 size = EDID_LENGTH * (1 + edid->extensions);
4338 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4339 size, edid);
e655d122
SK		 4340 if (!connector->edid_blob_ptr)
4341 return -EINVAL;
f453ba04 4342
58495563 4343 ret = drm_object_property_set_value(&connector->base,
f453ba04
DA		 4344 dev->mode_config.edid_property,
4345 connector->edid_blob_ptr->base.id);
4346
4347 return ret;
4348}
4349EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4350
3843e71f
RC		 4351/* Some properties could refer to dynamic refcnt'd objects, or things that
4352 * need special locking to handle lifetime issues (ie. to ensure the prop
4353 * value doesn't become invalid part way through the property update due to
4354 * race). The value returned by reference via 'obj' should be passed back
4355 * to drm_property_change_valid_put() after the property is set (and the
4356 * object to which the property is attached has a chance to take it's own
4357 * reference).
4358 */
d34f20d6 4359bool drm_property_change_valid_get(struct drm_property *property,
3843e71f 4360 uint64_t value, struct drm_mode_object **ref)
26a34815 4361{
2ca651d1
TR		 4362 int i;
4363
26a34815
PZ		 4364 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4365 return false;
5ea22f24 4366
3843e71f
RC		 4367 *ref = NULL;
4368
5ea22f24 4369 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 4370 if (value < property->values[0] || value > property->values[1])
4371 return false;
4372 return true;
ebc44cf3
RC		 4373 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4374 int64_t svalue = U642I64(value);
4dfd909f 4375
ebc44cf3
RC		 4376 if (svalue < U642I64(property->values[0]) ||
4377 svalue > U642I64(property->values[1]))
4378 return false;
4379 return true;
5ea22f24 4380 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
592c20ee 4381 uint64_t valid_mask = 0;
4dfd909f 4382
49e27545
RC		 4383 for (i = 0; i < property->num_values; i++)
4384 valid_mask |= (1ULL << property->values[i]);
4385 return !(value & ~valid_mask);
5ea22f24 4386 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
c4a56750
VS		 4387 /* Only the driver knows */
4388 return true;
98f75de4 4389 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
98f75de4
RC		 4390 /* a zero value for an object property translates to null: */
4391 if (value == 0)
4392 return true;
3843e71f
RC		 4393
4394 /* handle refcnt'd objects specially: */
4395 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4396 struct drm_framebuffer *fb;
4397 fb = drm_framebuffer_lookup(property->dev, value);
4398 if (fb) {
4399 *ref = &fb->base;
4400 return true;
4401 } else {
4402 return false;
4403 }
4404 } else {
4405 return _object_find(property->dev, value, property->values[0]) != NULL;
4406 }
26a34815 4407 }
2ca651d1
TR		 4408
4409 for (i = 0; i < property->num_values; i++)
4410 if (property->values[i] == value)
4411 return true;
4412 return false;
26a34815
PZ		 4413}
4414
d34f20d6 4415void drm_property_change_valid_put(struct drm_property *property,
3843e71f
RC		 4416 struct drm_mode_object *ref)
4417{
4418 if (!ref)
4419 return;
4420
4421 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4422 if (property->values[0] == DRM_MODE_OBJECT_FB)
4423 drm_framebuffer_unreference(obj_to_fb(ref));
4424 }
4425}
4426
c8e32cc1
DV		 4427/**
4428 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4429 * @dev: DRM device
4430 * @data: ioctl data
4431 * @file_priv: DRM file info
4432 *
4433 * This function sets the current value for a connectors's property. It also
4434 * calls into a driver's ->set_property callback to update the hardware state
4435 *
4436 * Called by the user via ioctl.
4437 *
4438 * Returns:
1a498633 4439 * Zero on success, negative errno on failure.
c8e32cc1 4440 */
f453ba04
DA		 4441int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4442 void *data, struct drm_file *file_priv)
4443{
0057d8dd
PZ		 4444 struct drm_mode_connector_set_property *conn_set_prop = data;
4445 struct drm_mode_obj_set_property obj_set_prop = {
4446 .value = conn_set_prop->value,
4447 .prop_id = conn_set_prop->prop_id,
4448 .obj_id = conn_set_prop->connector_id,
4449 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4450 };
fb3b06c8 4451
0057d8dd
PZ		 4452 /* It does all the locking and checking we need */
4453 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 4454}
4455
c543188a
PZ		 4456static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4457 struct drm_property *property,
4458 uint64_t value)
4459{
4460 int ret = -EINVAL;
4461 struct drm_connector *connector = obj_to_connector(obj);
4462
4463 /* Do DPMS ourselves */
4464 if (property == connector->dev->mode_config.dpms_property) {
4465 if (connector->funcs->dpms)
4466 (*connector->funcs->dpms)(connector, (int)value);
4467 ret = 0;
4468 } else if (connector->funcs->set_property)
4469 ret = connector->funcs->set_property(connector, property, value);
4470
4471 /* store the property value if successful */
4472 if (!ret)
58495563 4473 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 4474 return ret;
4475}
4476
bffd9de0
PZ		 4477static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4478 struct drm_property *property,
4479 uint64_t value)
4480{
4481 int ret = -EINVAL;
4482 struct drm_crtc *crtc = obj_to_crtc(obj);
4483
4484 if (crtc->funcs->set_property)
4485 ret = crtc->funcs->set_property(crtc, property, value);
4486 if (!ret)
4487 drm_object_property_set_value(obj, property, value);
4488
4489 return ret;
4490}
4491
3a5f87c2
TW		 4492/**
4493 * drm_mode_plane_set_obj_prop - set the value of a property
4494 * @plane: drm plane object to set property value for
4495 * @property: property to set
4496 * @value: value the property should be set to
4497 *
4498 * This functions sets a given property on a given plane object. This function
4499 * calls the driver's ->set_property callback and changes the software state of
4500 * the property if the callback succeeds.
4501 *
4502 * Returns:
4503 * Zero on success, error code on failure.
4504 */
4505int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4506 struct drm_property *property,
4507 uint64_t value)
4d93914a
RC		 4508{
4509 int ret = -EINVAL;
3a5f87c2 4510 struct drm_mode_object *obj = &plane->base;
4d93914a
RC		 4511
4512 if (plane->funcs->set_property)
4513 ret = plane->funcs->set_property(plane, property, value);
4514 if (!ret)
4515 drm_object_property_set_value(obj, property, value);
4516
4517 return ret;
4518}
3a5f87c2 4519EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4d93914a 4520
c8e32cc1 4521/**
1a498633 4522 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
c8e32cc1
DV		 4523 * @dev: DRM device
4524 * @data: ioctl data
4525 * @file_priv: DRM file info
4526 *
4527 * This function retrieves the current value for an object's property. Compared
4528 * to the connector specific ioctl this one is extended to also work on crtc and
4529 * plane objects.
4530 *
4531 * Called by the user via ioctl.
4532 *
4533 * Returns:
1a498633 4534 * Zero on success, negative errno on failure.
c8e32cc1 4535 */
c543188a
PZ		 4536int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4537 struct drm_file *file_priv)
4538{
4539 struct drm_mode_obj_get_properties *arg = data;
4540 struct drm_mode_object *obj;
4541 int ret = 0;
c543188a
PZ		 4542
4543 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4544 return -EINVAL;
4545
84849903 4546 drm_modeset_lock_all(dev);
c543188a
PZ		 4547
4548 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4549 if (!obj) {
f27657f2 4550 ret = -ENOENT;
c543188a
PZ		 4551 goto out;
4552 }
4553 if (!obj->properties) {
4554 ret = -EINVAL;
4555 goto out;
4556 }
4557
88a48e29 4558 ret = get_properties(obj, file_priv->atomic,
95cbf110
RC		 4559 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4560 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4561 &arg->count_props);
c543188a 4562
c543188a 4563out:
84849903 4564 drm_modeset_unlock_all(dev);
c543188a
PZ		 4565 return ret;
4566}
4567
c8e32cc1
DV		 4568/**
4569 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4570 * @dev: DRM device
4571 * @data: ioctl data
4572 * @file_priv: DRM file info
4573 *
4574 * This function sets the current value for an object's property. It also calls
4575 * into a driver's ->set_property callback to update the hardware state.
4576 * Compared to the connector specific ioctl this one is extended to also work on
4577 * crtc and plane objects.
4578 *
4579 * Called by the user via ioctl.
4580 *
4581 * Returns:
1a498633 4582 * Zero on success, negative errno on failure.
c8e32cc1 4583 */
c543188a
PZ		 4584int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4585 struct drm_file *file_priv)
4586{
4587 struct drm_mode_obj_set_property *arg = data;
4588 struct drm_mode_object *arg_obj;
4589 struct drm_mode_object *prop_obj;
4590 struct drm_property *property;
3843e71f
RC		 4591 int i, ret = -EINVAL;
4592 struct drm_mode_object *ref;
c543188a
PZ		 4593
4594 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4595 return -EINVAL;
4596
84849903 4597 drm_modeset_lock_all(dev);
c543188a
PZ		 4598
4599 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 4600 if (!arg_obj) {
4601 ret = -ENOENT;
c543188a 4602 goto out;
f27657f2 4603 }
c543188a
PZ		 4604 if (!arg_obj->properties)
4605 goto out;
4606
7f88a9be 4607 for (i = 0; i < arg_obj->properties->count; i++)
b17cd757 4608 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
c543188a
PZ		 4609 break;
4610
7f88a9be 4611 if (i == arg_obj->properties->count)
c543188a
PZ		 4612 goto out;
4613
4614 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4615 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 4616 if (!prop_obj) {
4617 ret = -ENOENT;
c543188a 4618 goto out;
f27657f2 4619 }
c543188a
PZ		 4620 property = obj_to_property(prop_obj);
4621
3843e71f 4622 if (!drm_property_change_valid_get(property, arg->value, &ref))
c543188a
PZ		 4623 goto out;
4624
4625 switch (arg_obj->type) {
4626 case DRM_MODE_OBJECT_CONNECTOR:
4627 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4628 arg->value);
4629 break;
bffd9de0
PZ		 4630 case DRM_MODE_OBJECT_CRTC:
4631 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4632 break;
4d93914a 4633 case DRM_MODE_OBJECT_PLANE:
3a5f87c2
TW		 4634 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4635 property, arg->value);
4d93914a 4636 break;
c543188a
PZ		 4637 }
4638
3843e71f
RC		 4639 drm_property_change_valid_put(property, ref);
4640
c543188a 4641out:
84849903 4642 drm_modeset_unlock_all(dev);
c543188a
PZ		 4643 return ret;
4644}
4645
c8e32cc1
DV		 4646/**
4647 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4648 * @connector: connector to attach
4649 * @encoder: encoder to attach @connector to
4650 *
4651 * This function links up a connector to an encoder. Note that the routing
4652 * restrictions between encoders and crtcs are exposed to userspace through the
4653 * possible_clones and possible_crtcs bitmasks.
4654 *
4655 * Returns:
1a498633 4656 * Zero on success, negative errno on failure.
c8e32cc1 4657 */
f453ba04
DA		 4658int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4659 struct drm_encoder *encoder)
4660{
4661 int i;
4662
4663 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4664 if (connector->encoder_ids[i] == 0) {
4665 connector->encoder_ids[i] = encoder->base.id;
4666 return 0;
4667 }
4668 }
4669 return -ENOMEM;
4670}
4671EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4672
c8e32cc1
DV		 4673/**
4674 * drm_mode_crtc_set_gamma_size - set the gamma table size
4675 * @crtc: CRTC to set the gamma table size for
4676 * @gamma_size: size of the gamma table
4677 *
4678 * Drivers which support gamma tables should set this to the supported gamma
4679 * table size when initializing the CRTC. Currently the drm core only supports a
4680 * fixed gamma table size.
4681 *
4682 * Returns:
1a498633 4683 * Zero on success, negative errno on failure.
c8e32cc1 4684 */
4cae5b84 4685int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 4686 int gamma_size)
f453ba04
DA		 4687{
4688 crtc->gamma_size = gamma_size;
4689
bd3f0ff9
TR		 4690 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
4691 GFP_KERNEL);
f453ba04
DA		 4692 if (!crtc->gamma_store) {
4693 crtc->gamma_size = 0;
4cae5b84 4694 return -ENOMEM;
f453ba04
DA		 4695 }
4696
4cae5b84 4697 return 0;
f453ba04
DA		 4698}
4699EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4700
c8e32cc1
DV		 4701/**
4702 * drm_mode_gamma_set_ioctl - set the gamma table
4703 * @dev: DRM device
4704 * @data: ioctl data
4705 * @file_priv: DRM file info
4706 *
4707 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4708 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4709 *
4710 * Called by the user via ioctl.
4711 *
4712 * Returns:
1a498633 4713 * Zero on success, negative errno on failure.
c8e32cc1 4714 */
f453ba04
DA		 4715int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4716 void *data, struct drm_file *file_priv)
4717{
4718 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4719 struct drm_crtc *crtc;
4720 void *r_base, *g_base, *b_base;
4721 int size;
4722 int ret = 0;
4723
fb3b06c8
DA		 4724 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4725 return -EINVAL;
4726
84849903 4727 drm_modeset_lock_all(dev);
a2b34e22
RC		 4728 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4729 if (!crtc) {
f27657f2 4730 ret = -ENOENT;
f453ba04
DA		 4731 goto out;
4732 }
f453ba04 4733
ebe0f244
LP		 4734 if (crtc->funcs->gamma_set == NULL) {
4735 ret = -ENOSYS;
4736 goto out;
4737 }
4738
f453ba04
DA		 4739 /* memcpy into gamma store */
4740 if (crtc_lut->gamma_size != crtc->gamma_size) {
4741 ret = -EINVAL;
4742 goto out;
4743 }
4744
4745 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4746 r_base = crtc->gamma_store;
4747 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4748 ret = -EFAULT;
4749 goto out;
4750 }
4751
4752 g_base = r_base + size;
4753 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4754 ret = -EFAULT;
4755 goto out;
4756 }
4757
4758 b_base = g_base + size;
4759 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4760 ret = -EFAULT;
4761 goto out;
4762 }
4763
7203425a 4764 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 4765
4766out:
84849903 4767 drm_modeset_unlock_all(dev);
f453ba04
DA		 4768 return ret;
4769
4770}
4771
c8e32cc1
DV		 4772/**
4773 * drm_mode_gamma_get_ioctl - get the gamma table
4774 * @dev: DRM device
4775 * @data: ioctl data
4776 * @file_priv: DRM file info
4777 *
4778 * Copy the current gamma table into the storage provided. This also provides
4779 * the gamma table size the driver expects, which can be used to size the
4780 * allocated storage.
4781 *
4782 * Called by the user via ioctl.
4783 *
4784 * Returns:
1a498633 4785 * Zero on success, negative errno on failure.
c8e32cc1 4786 */
f453ba04
DA		 4787int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4788 void *data, struct drm_file *file_priv)
4789{
4790 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4791 struct drm_crtc *crtc;
4792 void *r_base, *g_base, *b_base;
4793 int size;
4794 int ret = 0;
4795
fb3b06c8
DA		 4796 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4797 return -EINVAL;
4798
84849903 4799 drm_modeset_lock_all(dev);
a2b34e22
RC		 4800 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4801 if (!crtc) {
f27657f2 4802 ret = -ENOENT;
f453ba04
DA		 4803 goto out;
4804 }
f453ba04
DA		 4805
4806 /* memcpy into gamma store */
4807 if (crtc_lut->gamma_size != crtc->gamma_size) {
4808 ret = -EINVAL;
4809 goto out;
4810 }
4811
4812 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4813 r_base = crtc->gamma_store;
4814 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4815 ret = -EFAULT;
4816 goto out;
4817 }
4818
4819 g_base = r_base + size;
4820 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4821 ret = -EFAULT;
4822 goto out;
4823 }
4824
4825 b_base = g_base + size;
4826 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4827 ret = -EFAULT;
4828 goto out;
4829 }
4830out:
84849903 4831 drm_modeset_unlock_all(dev);
f453ba04
DA		 4832 return ret;
4833}
d91d8a3f 4834
c8e32cc1
DV		 4835/**
4836 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4837 * @dev: DRM device
4838 * @data: ioctl data
4839 * @file_priv: DRM file info
4840 *
4841 * This schedules an asynchronous update on a given CRTC, called page flip.
4842 * Optionally a drm event is generated to signal the completion of the event.
4843 * Generic drivers cannot assume that a pageflip with changed framebuffer
4844 * properties (including driver specific metadata like tiling layout) will work,
4845 * but some drivers support e.g. pixel format changes through the pageflip
4846 * ioctl.
4847 *
4848 * Called by the user via ioctl.
4849 *
4850 * Returns:
1a498633 4851 * Zero on success, negative errno on failure.
c8e32cc1 4852 */
d91d8a3f
KH		 4853int drm_mode_page_flip_ioctl(struct drm_device *dev,
4854 void *data, struct drm_file *file_priv)
4855{
4856 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 4857 struct drm_crtc *crtc;
3d30a59b 4858 struct drm_framebuffer *fb = NULL;
d91d8a3f
KH		 4859 struct drm_pending_vblank_event *e = NULL;
4860 unsigned long flags;
4861 int ret = -EINVAL;
4862
4863 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4864 page_flip->reserved != 0)
4865 return -EINVAL;
4866
62f2104f
KP		 4867 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4868 return -EINVAL;
4869
a2b34e22
RC		 4870 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4871 if (!crtc)
f27657f2 4872 return -ENOENT;
d91d8a3f 4873
4d02e2de 4874 drm_modeset_lock_crtc(crtc, crtc->primary);
f4510a27 4875 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 4876 /* The framebuffer is currently unbound, presumably
4877 * due to a hotplug event, that userspace has not
4878 * yet discovered.
4879 */
4880 ret = -EBUSY;
4881 goto out;
4882 }
4883
d91d8a3f
KH		 4884 if (crtc->funcs->page_flip == NULL)
4885 goto out;
4886
786b99ed 4887 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 4888 if (!fb) {
4889 ret = -ENOENT;
d91d8a3f 4890 goto out;
37c4e705 4891 }
d91d8a3f 4892
c11e9283
DL		 4893 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4894 if (ret)
5f61bb42 4895 goto out;
5f61bb42 4896
f4510a27 4897 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 4898 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4899 ret = -EINVAL;
4900 goto out;
4901 }
4902
d91d8a3f
KH		 4903 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4904 ret = -ENOMEM;
4905 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 4906 if (file_priv->event_space < sizeof(e->event)) {
d91d8a3f
KH		 4907 spin_unlock_irqrestore(&dev->event_lock, flags);
4908 goto out;
4909 }
f76511b9 4910 file_priv->event_space -= sizeof(e->event);
d91d8a3f
KH		 4911 spin_unlock_irqrestore(&dev->event_lock, flags);
4912
f76511b9 4913 e = kzalloc(sizeof(*e), GFP_KERNEL);
d91d8a3f
KH		 4914 if (e == NULL) {
4915 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 4916 file_priv->event_space += sizeof(e->event);
d91d8a3f
KH		 4917 spin_unlock_irqrestore(&dev->event_lock, flags);
4918 goto out;
4919 }
4920
7bd4d7be 4921 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
f76511b9 4922 e->event.base.length = sizeof(e->event);
d91d8a3f
KH		 4923 e->event.user_data = page_flip->user_data;
4924 e->base.event = &e->event.base;
4925 e->base.file_priv = file_priv;
4926 e->base.destroy =
4927 (void (*) (struct drm_pending_event *)) kfree;
4928 }
4929
3d30a59b 4930 crtc->primary->old_fb = crtc->primary->fb;
ed8d1975 4931 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 4932 if (ret) {
aef6a7ee
JS		 4933 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4934 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 4935 file_priv->event_space += sizeof(e->event);
aef6a7ee
JS		 4936 spin_unlock_irqrestore(&dev->event_lock, flags);
4937 kfree(e);
4938 }
b0d12325 4939 /* Keep the old fb, don't unref it. */
3d30a59b 4940 crtc->primary->old_fb = NULL;
b0d12325 4941 } else {
8cf1e981
TR		 4942 /*
4943 * Warn if the driver hasn't properly updated the crtc->fb
4944 * field to reflect that the new framebuffer is now used.
4945 * Failing to do so will screw with the reference counting
4946 * on framebuffers.
4947 */
f4510a27 4948 WARN_ON(crtc->primary->fb != fb);
b0d12325
DV		 4949 /* Unref only the old framebuffer. */
4950 fb = NULL;
d91d8a3f
KH		 4951 }
4952
4953out:
b0d12325
DV		 4954 if (fb)
4955 drm_framebuffer_unreference(fb);
3d30a59b
DV		 4956 if (crtc->primary->old_fb)
4957 drm_framebuffer_unreference(crtc->primary->old_fb);
4958 crtc->primary->old_fb = NULL;
d059f652 4959 drm_modeset_unlock_crtc(crtc);
b4d5e7d1 4960
d91d8a3f
KH		 4961 return ret;
4962}
eb033556 4963
c8e32cc1
DV		 4964/**
4965 * drm_mode_config_reset - call ->reset callbacks
4966 * @dev: drm device
4967 *
4968 * This functions calls all the crtc's, encoder's and connector's ->reset
4969 * callback. Drivers can use this in e.g. their driver load or resume code to
4970 * reset hardware and software state.
4971 */
eb033556
CW		 4972void drm_mode_config_reset(struct drm_device *dev)
4973{
4974 struct drm_crtc *crtc;
2a0d7cfd 4975 struct drm_plane *plane;
eb033556
CW		 4976 struct drm_encoder *encoder;
4977 struct drm_connector *connector;
4978
2a0d7cfd
DV		 4979 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4980 if (plane->funcs->reset)
4981 plane->funcs->reset(plane);
4982
eb033556
CW		 4983 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4984 if (crtc->funcs->reset)
4985 crtc->funcs->reset(crtc);
4986
4987 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4988 if (encoder->funcs->reset)
4989 encoder->funcs->reset(encoder);
4990
5e2cb2f6
DV		 4991 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4992 connector->status = connector_status_unknown;
4993
eb033556
CW		 4994 if (connector->funcs->reset)
4995 connector->funcs->reset(connector);
5e2cb2f6 4996 }
eb033556
CW		 4997}
4998EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 4999
c8e32cc1
DV		 5000/**
5001 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5002 * @dev: DRM device
5003 * @data: ioctl data
5004 * @file_priv: DRM file info
5005 *
5006 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5007 * TTM or something else entirely) and returns the resulting buffer handle. This
5008 * handle can then be wrapped up into a framebuffer modeset object.
5009 *
5010 * Note that userspace is not allowed to use such objects for render
5011 * acceleration - drivers must create their own private ioctls for such a use
5012 * case.
5013 *
5014 * Called by the user via ioctl.
5015 *
5016 * Returns:
1a498633 5017 * Zero on success, negative errno on failure.
c8e32cc1 5018 */
ff72145b
DA		 5019int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5020 void *data, struct drm_file *file_priv)
5021{
5022 struct drm_mode_create_dumb *args = data;
b28cd41f 5023 u32 cpp, stride, size;
ff72145b
DA		 5024
5025 if (!dev->driver->dumb_create)
5026 return -ENOSYS;
b28cd41f
DH		 5027 if (!args->width || !args->height || !args->bpp)
5028 return -EINVAL;
5029
5030 /* overflow checks for 32bit size calculations */
00e72089 5031 /* NOTE: DIV_ROUND_UP() can overflow */
b28cd41f 5032 cpp = DIV_ROUND_UP(args->bpp, 8);
00e72089 5033 if (!cpp || cpp > 0xffffffffU / args->width)
b28cd41f
DH		 5034 return -EINVAL;
5035 stride = cpp * args->width;
5036 if (args->height > 0xffffffffU / stride)
5037 return -EINVAL;
5038
5039 /* test for wrap-around */
5040 size = args->height * stride;
5041 if (PAGE_ALIGN(size) == 0)
5042 return -EINVAL;
5043
f6085952
TR		 5044 /*
5045 * handle, pitch and size are output parameters. Zero them out to
5046 * prevent drivers from accidentally using uninitialized data. Since
5047 * not all existing userspace is clearing these fields properly we
5048 * cannot reject IOCTL with garbage in them.
5049 */
5050 args->handle = 0;
5051 args->pitch = 0;
5052 args->size = 0;
5053
ff72145b
DA		 5054 return dev->driver->dumb_create(file_priv, dev, args);
5055}
5056
c8e32cc1
DV		 5057/**
5058 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5059 * @dev: DRM device
5060 * @data: ioctl data
5061 * @file_priv: DRM file info
5062 *
5063 * Allocate an offset in the drm device node's address space to be able to
5064 * memory map a dumb buffer.
5065 *
5066 * Called by the user via ioctl.
5067 *
5068 * Returns:
1a498633 5069 * Zero on success, negative errno on failure.
c8e32cc1 5070 */
ff72145b
DA		 5071int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5072 void *data, struct drm_file *file_priv)
5073{
5074 struct drm_mode_map_dumb *args = data;
5075
5076 /* call driver ioctl to get mmap offset */
5077 if (!dev->driver->dumb_map_offset)
5078 return -ENOSYS;
5079
5080 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5081}
5082
c8e32cc1
DV		 5083/**
5084 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5085 * @dev: DRM device
5086 * @data: ioctl data
5087 * @file_priv: DRM file info
5088 *
5089 * This destroys the userspace handle for the given dumb backing storage buffer.
5090 * Since buffer objects must be reference counted in the kernel a buffer object
5091 * won't be immediately freed if a framebuffer modeset object still uses it.
5092 *
5093 * Called by the user via ioctl.
5094 *
5095 * Returns:
1a498633 5096 * Zero on success, negative errno on failure.
c8e32cc1 5097 */
ff72145b
DA		 5098int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5099 void *data, struct drm_file *file_priv)
5100{
5101 struct drm_mode_destroy_dumb *args = data;
5102
5103 if (!dev->driver->dumb_destroy)
5104 return -ENOSYS;
5105
5106 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5107}
248dbc23 5108
c8e32cc1
DV		 5109/**
5110 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5111 * @format: pixel format (DRM_FORMAT_*)
5112 * @depth: storage for the depth value
5113 * @bpp: storage for the bpp value
5114 *
5115 * This only supports RGB formats here for compat with code that doesn't use
5116 * pixel formats directly yet.
248dbc23
DA		 5117 */
5118void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5119 int *bpp)
5120{
5121 switch (format) {
c51a6bc5 5122 case DRM_FORMAT_C8:
04b3924d
VS		 5123 case DRM_FORMAT_RGB332:
5124 case DRM_FORMAT_BGR233:
248dbc23
DA		 5125 *depth = 8;
5126 *bpp = 8;
5127 break;
04b3924d
VS		 5128 case DRM_FORMAT_XRGB1555:
5129 case DRM_FORMAT_XBGR1555:
5130 case DRM_FORMAT_RGBX5551:
5131 case DRM_FORMAT_BGRX5551:
5132 case DRM_FORMAT_ARGB1555:
5133 case DRM_FORMAT_ABGR1555:
5134 case DRM_FORMAT_RGBA5551:
5135 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 5136 *depth = 15;
5137 *bpp = 16;
5138 break;
04b3924d
VS		 5139 case DRM_FORMAT_RGB565:
5140 case DRM_FORMAT_BGR565:
248dbc23
DA		 5141 *depth = 16;
5142 *bpp = 16;
5143 break;
04b3924d
VS		 5144 case DRM_FORMAT_RGB888:
5145 case DRM_FORMAT_BGR888:
5146 *depth = 24;
5147 *bpp = 24;
5148 break;
5149 case DRM_FORMAT_XRGB8888:
5150 case DRM_FORMAT_XBGR8888:
5151 case DRM_FORMAT_RGBX8888:
5152 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 5153 *depth = 24;
5154 *bpp = 32;
5155 break;
04b3924d
VS		 5156 case DRM_FORMAT_XRGB2101010:
5157 case DRM_FORMAT_XBGR2101010:
5158 case DRM_FORMAT_RGBX1010102:
5159 case DRM_FORMAT_BGRX1010102:
5160 case DRM_FORMAT_ARGB2101010:
5161 case DRM_FORMAT_ABGR2101010:
5162 case DRM_FORMAT_RGBA1010102:
5163 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 5164 *depth = 30;
5165 *bpp = 32;
5166 break;
04b3924d
VS		 5167 case DRM_FORMAT_ARGB8888:
5168 case DRM_FORMAT_ABGR8888:
5169 case DRM_FORMAT_RGBA8888:
5170 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 5171 *depth = 32;
5172 *bpp = 32;
5173 break;
5174 default:
23c453a4
VS		 5175 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5176 drm_get_format_name(format));
248dbc23
DA		 5177 *depth = 0;
5178 *bpp = 0;
5179 break;
5180 }
5181}
5182EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 5183
5184/**
5185 * drm_format_num_planes - get the number of planes for format
5186 * @format: pixel format (DRM_FORMAT_*)
5187 *
c8e32cc1 5188 * Returns:
141670e9
VS		 5189 * The number of planes used by the specified pixel format.
5190 */
5191int drm_format_num_planes(uint32_t format)
5192{
5193 switch (format) {
5194 case DRM_FORMAT_YUV410:
5195 case DRM_FORMAT_YVU410:
5196 case DRM_FORMAT_YUV411:
5197 case DRM_FORMAT_YVU411:
5198 case DRM_FORMAT_YUV420:
5199 case DRM_FORMAT_YVU420:
5200 case DRM_FORMAT_YUV422:
5201 case DRM_FORMAT_YVU422:
5202 case DRM_FORMAT_YUV444:
5203 case DRM_FORMAT_YVU444:
5204 return 3;
5205 case DRM_FORMAT_NV12:
5206 case DRM_FORMAT_NV21:
5207 case DRM_FORMAT_NV16:
5208 case DRM_FORMAT_NV61:
ba623f6a
LP		 5209 case DRM_FORMAT_NV24:
5210 case DRM_FORMAT_NV42:
141670e9
VS		 5211 return 2;
5212 default:
5213 return 1;
5214 }
5215}
5216EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 5217
5218/**
5219 * drm_format_plane_cpp - determine the bytes per pixel value
5220 * @format: pixel format (DRM_FORMAT_*)
5221 * @plane: plane index
5222 *
c8e32cc1 5223 * Returns:
5a86bd55
VS		 5224 * The bytes per pixel value for the specified plane.
5225 */
5226int drm_format_plane_cpp(uint32_t format, int plane)
5227{
5228 unsigned int depth;
5229 int bpp;
5230
5231 if (plane >= drm_format_num_planes(format))
5232 return 0;
5233
5234 switch (format) {
5235 case DRM_FORMAT_YUYV:
5236 case DRM_FORMAT_YVYU:
5237 case DRM_FORMAT_UYVY:
5238 case DRM_FORMAT_VYUY:
5239 return 2;
5240 case DRM_FORMAT_NV12:
5241 case DRM_FORMAT_NV21:
5242 case DRM_FORMAT_NV16:
5243 case DRM_FORMAT_NV61:
ba623f6a
LP		 5244 case DRM_FORMAT_NV24:
5245 case DRM_FORMAT_NV42:
5a86bd55
VS		 5246 return plane ? 2 : 1;
5247 case DRM_FORMAT_YUV410:
5248 case DRM_FORMAT_YVU410:
5249 case DRM_FORMAT_YUV411:
5250 case DRM_FORMAT_YVU411:
5251 case DRM_FORMAT_YUV420:
5252 case DRM_FORMAT_YVU420:
5253 case DRM_FORMAT_YUV422:
5254 case DRM_FORMAT_YVU422:
5255 case DRM_FORMAT_YUV444:
5256 case DRM_FORMAT_YVU444:
5257 return 1;
5258 default:
5259 drm_fb_get_bpp_depth(format, &depth, &bpp);
5260 return bpp >> 3;
5261 }
5262}
5263EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 5264
5265/**
5266 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5267 * @format: pixel format (DRM_FORMAT_*)
5268 *
c8e32cc1 5269 * Returns:
01b68b04
VS		 5270 * The horizontal chroma subsampling factor for the
5271 * specified pixel format.
5272 */
5273int drm_format_horz_chroma_subsampling(uint32_t format)
5274{
5275 switch (format) {
5276 case DRM_FORMAT_YUV411:
5277 case DRM_FORMAT_YVU411:
5278 case DRM_FORMAT_YUV410:
5279 case DRM_FORMAT_YVU410:
5280 return 4;
5281 case DRM_FORMAT_YUYV:
5282 case DRM_FORMAT_YVYU:
5283 case DRM_FORMAT_UYVY:
5284 case DRM_FORMAT_VYUY:
5285 case DRM_FORMAT_NV12:
5286 case DRM_FORMAT_NV21:
5287 case DRM_FORMAT_NV16:
5288 case DRM_FORMAT_NV61:
5289 case DRM_FORMAT_YUV422:
5290 case DRM_FORMAT_YVU422:
5291 case DRM_FORMAT_YUV420:
5292 case DRM_FORMAT_YVU420:
5293 return 2;
5294 default:
5295 return 1;
5296 }
5297}
5298EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5299
5300/**
5301 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5302 * @format: pixel format (DRM_FORMAT_*)
5303 *
c8e32cc1 5304 * Returns:
01b68b04
VS		 5305 * The vertical chroma subsampling factor for the
5306 * specified pixel format.
5307 */
5308int drm_format_vert_chroma_subsampling(uint32_t format)
5309{
5310 switch (format) {
5311 case DRM_FORMAT_YUV410:
5312 case DRM_FORMAT_YVU410:
5313 return 4;
5314 case DRM_FORMAT_YUV420:
5315 case DRM_FORMAT_YVU420:
5316 case DRM_FORMAT_NV12:
5317 case DRM_FORMAT_NV21:
5318 return 2;
5319 default:
5320 return 1;
5321 }
5322}
5323EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3 5324
3c9855f6
VS		 5325/**
5326 * drm_rotation_simplify() - Try to simplify the rotation
5327 * @rotation: Rotation to be simplified
5328 * @supported_rotations: Supported rotations
5329 *
5330 * Attempt to simplify the rotation to a form that is supported.
5331 * Eg. if the hardware supports everything except DRM_REFLECT_X
5332 * one could call this function like this:
5333 *
5334 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5335 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5336 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5337 *
5338 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5339 * transforms the hardware supports, this function may not
5340 * be able to produce a supported transform, so the caller should
5341 * check the result afterwards.
5342 */
5343unsigned int drm_rotation_simplify(unsigned int rotation,
5344 unsigned int supported_rotations)
5345{
5346 if (rotation & ~supported_rotations) {
5347 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5348 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5349 }
5350
5351 return rotation;
5352}
5353EXPORT_SYMBOL(drm_rotation_simplify);
5354
87d24fc3
LP		 5355/**
5356 * drm_mode_config_init - initialize DRM mode_configuration structure
5357 * @dev: DRM device
5358 *
5359 * Initialize @dev's mode_config structure, used for tracking the graphics
5360 * configuration of @dev.
5361 *
5362 * Since this initializes the modeset locks, no locking is possible. Which is no
5363 * problem, since this should happen single threaded at init time. It is the
5364 * driver's problem to ensure this guarantee.
5365 *
5366 */
5367void drm_mode_config_init(struct drm_device *dev)
5368{
5369 mutex_init(&dev->mode_config.mutex);
51fd371b 5370 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5371 mutex_init(&dev->mode_config.idr_mutex);
5372 mutex_init(&dev->mode_config.fb_lock);
5373 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5374 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5375 INIT_LIST_HEAD(&dev->mode_config.connector_list);
3b336ec4 5376 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
87d24fc3
LP		 5377 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5378 INIT_LIST_HEAD(&dev->mode_config.property_list);
5379 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5380 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5381 idr_init(&dev->mode_config.crtc_idr);
138f9ebb 5382 idr_init(&dev->mode_config.tile_idr);
87d24fc3
LP		 5383
5384 drm_modeset_lock_all(dev);
6b4959f4 5385 drm_mode_create_standard_properties(dev);
87d24fc3
LP		 5386 drm_modeset_unlock_all(dev);
5387
5388 /* Just to be sure */
5389 dev->mode_config.num_fb = 0;
5390 dev->mode_config.num_connector = 0;
5391 dev->mode_config.num_crtc = 0;
5392 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 5393 dev->mode_config.num_overlay_plane = 0;
5394 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 5395}
5396EXPORT_SYMBOL(drm_mode_config_init);
5397
5398/**
5399 * drm_mode_config_cleanup - free up DRM mode_config info
5400 * @dev: DRM device
5401 *
5402 * Free up all the connectors and CRTCs associated with this DRM device, then
5403 * free up the framebuffers and associated buffer objects.
5404 *
5405 * Note that since this /should/ happen single-threaded at driver/device
5406 * teardown time, no locking is required. It's the driver's job to ensure that
5407 * this guarantee actually holds true.
5408 *
5409 * FIXME: cleanup any dangling user buffer objects too
5410 */
5411void drm_mode_config_cleanup(struct drm_device *dev)
5412{
5413 struct drm_connector *connector, *ot;
5414 struct drm_crtc *crtc, *ct;
5415 struct drm_encoder *encoder, *enct;
3b336ec4 5416 struct drm_bridge *bridge, *brt;
87d24fc3
LP		 5417 struct drm_framebuffer *fb, *fbt;
5418 struct drm_property *property, *pt;
5419 struct drm_property_blob *blob, *bt;
5420 struct drm_plane *plane, *plt;
5421
5422 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5423 head) {
5424 encoder->funcs->destroy(encoder);
5425 }
5426
3b336ec4
SP		 5427 list_for_each_entry_safe(bridge, brt,
5428 &dev->mode_config.bridge_list, head) {
5429 bridge->funcs->destroy(bridge);
5430 }
5431
87d24fc3
LP		 5432 list_for_each_entry_safe(connector, ot,
5433 &dev->mode_config.connector_list, head) {
5434 connector->funcs->destroy(connector);
5435 }
5436
5437 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5438 head) {
5439 drm_property_destroy(dev, property);
5440 }
5441
5442 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5443 head) {
5444 drm_property_destroy_blob(dev, blob);
5445 }
5446
5447 /*
5448 * Single-threaded teardown context, so it's not required to grab the
5449 * fb_lock to protect against concurrent fb_list access. Contrary, it
5450 * would actually deadlock with the drm_framebuffer_cleanup function.
5451 *
5452 * Also, if there are any framebuffers left, that's a driver leak now,
5453 * so politely WARN about this.
5454 */
5455 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5456 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5457 drm_framebuffer_remove(fb);
5458 }
5459
5460 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5461 head) {
5462 plane->funcs->destroy(plane);
5463 }
5464
5465 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5466 crtc->funcs->destroy(crtc);
5467 }
5468
138f9ebb 5469 idr_destroy(&dev->mode_config.tile_idr);
87d24fc3 5470 idr_destroy(&dev->mode_config.crtc_idr);
51fd371b 5471 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5472}
5473EXPORT_SYMBOL(drm_mode_config_cleanup);
c1df5f3c
VS		 5474
5475struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5476 unsigned int supported_rotations)
5477{
5478 static const struct drm_prop_enum_list props[] = {
5479 { DRM_ROTATE_0, "rotate-0" },
5480 { DRM_ROTATE_90, "rotate-90" },
5481 { DRM_ROTATE_180, "rotate-180" },
5482 { DRM_ROTATE_270, "rotate-270" },
5483 { DRM_REFLECT_X, "reflect-x" },
5484 { DRM_REFLECT_Y, "reflect-y" },
5485 };
5486
5487 return drm_property_create_bitmask(dev, 0, "rotation",
5488 props, ARRAY_SIZE(props),
5489 supported_rotations);
5490}
5491EXPORT_SYMBOL(drm_mode_create_rotation_property);
138f9ebb
DA		 5492
5493/**
5494 * DOC: Tile group
5495 *
5496 * Tile groups are used to represent tiled monitors with a unique
5497 * integer identifier. Tiled monitors using DisplayID v1.3 have
5498 * a unique 8-byte handle, we store this in a tile group, so we
5499 * have a common identifier for all tiles in a monitor group.
5500 */
5501static void drm_tile_group_free(struct kref *kref)
5502{
5503 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5504 struct drm_device *dev = tg->dev;
5505 mutex_lock(&dev->mode_config.idr_mutex);
5506 idr_remove(&dev->mode_config.tile_idr, tg->id);
5507 mutex_unlock(&dev->mode_config.idr_mutex);
5508 kfree(tg);
5509}
5510
5511/**
5512 * drm_mode_put_tile_group - drop a reference to a tile group.
5513 * @dev: DRM device
5514 * @tg: tile group to drop reference to.
5515 *
5516 * drop reference to tile group and free if 0.
5517 */
5518void drm_mode_put_tile_group(struct drm_device *dev,
5519 struct drm_tile_group *tg)
5520{
5521 kref_put(&tg->refcount, drm_tile_group_free);
5522}
5523
5524/**
5525 * drm_mode_get_tile_group - get a reference to an existing tile group
5526 * @dev: DRM device
5527 * @topology: 8-bytes unique per monitor.
5528 *
5529 * Use the unique bytes to get a reference to an existing tile group.
5530 *
5531 * RETURNS:
5532 * tile group or NULL if not found.
5533 */
5534struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5535 char topology[8])
5536{
5537 struct drm_tile_group *tg;
5538 int id;
5539 mutex_lock(&dev->mode_config.idr_mutex);
5540 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5541 if (!memcmp(tg->group_data, topology, 8)) {
5542 if (!kref_get_unless_zero(&tg->refcount))
5543 tg = NULL;
5544 mutex_unlock(&dev->mode_config.idr_mutex);
5545 return tg;
5546 }
5547 }
5548 mutex_unlock(&dev->mode_config.idr_mutex);
5549 return NULL;
5550}
5551
5552/**
5553 * drm_mode_create_tile_group - create a tile group from a displayid description
5554 * @dev: DRM device
5555 * @topology: 8-bytes unique per monitor.
5556 *
5557 * Create a tile group for the unique monitor, and get a unique
5558 * identifier for the tile group.
5559 *
5560 * RETURNS:
5561 * new tile group or error.
5562 */
5563struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5564 char topology[8])
5565{
5566 struct drm_tile_group *tg;
5567 int ret;
5568
5569 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5570 if (!tg)
5571 return ERR_PTR(-ENOMEM);
5572
5573 kref_init(&tg->refcount);
5574 memcpy(tg->group_data, topology, 8);
5575 tg->dev = dev;
5576
5577 mutex_lock(&dev->mode_config.idr_mutex);
5578 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5579 if (ret >= 0) {
5580 tg->id = ret;
5581 } else {
5582 kfree(tg);
5583 tg = ERR_PTR(ret);
5584 }
5585
5586 mutex_unlock(&dev->mode_config.idr_mutex);
5587 return tg;
5588}
Linux kernel - Deliverables
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