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drm: Kconfig: Let all DRM_GEM_CMA_HELPER related macros depend on HAVE_DMA_ATTRS
[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
eab3bbef
DV		 694 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
695 drm_object_attach_property(&crtc->base, config->prop_active, 0);
696 }
697
baf698b0 698 return 0;
f453ba04 699}
e13161af 700EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 701
702/**
ad6f5c34 703 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 704 * @crtc: CRTC to cleanup
705 *
ad6f5c34
VS		 706 * This function cleans up @crtc and removes it from the DRM mode setting
707 * core. Note that the function does *not* free the crtc structure itself,
708 * this is the responsibility of the caller.
f453ba04
DA		 709 */
710void drm_crtc_cleanup(struct drm_crtc *crtc)
711{
712 struct drm_device *dev = crtc->dev;
713
9e1c156f
SK		 714 kfree(crtc->gamma_store);
715 crtc->gamma_store = NULL;
f453ba04 716
51fd371b
RC		 717 drm_modeset_lock_fini(&crtc->mutex);
718
f453ba04
DA		 719 drm_mode_object_put(dev, &crtc->base);
720 list_del(&crtc->head);
721 dev->mode_config.num_crtc--;
3009c037
TR		 722
723 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
724 if (crtc->state && crtc->funcs->atomic_destroy_state)
725 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
a18c0af1
TR		 726
727 memset(crtc, 0, sizeof(*crtc));
f453ba04
DA		 728}
729EXPORT_SYMBOL(drm_crtc_cleanup);
730
db5f7a6e
RK		 731/**
732 * drm_crtc_index - find the index of a registered CRTC
733 * @crtc: CRTC to find index for
734 *
735 * Given a registered CRTC, return the index of that CRTC within a DRM
736 * device's list of CRTCs.
737 */
738unsigned int drm_crtc_index(struct drm_crtc *crtc)
739{
740 unsigned int index = 0;
741 struct drm_crtc *tmp;
742
743 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
744 if (tmp == crtc)
745 return index;
746
747 index++;
748 }
749
750 BUG();
751}
752EXPORT_SYMBOL(drm_crtc_index);
753
86f422d5 754/*
f453ba04
DA		 755 * drm_mode_remove - remove and free a mode
756 * @connector: connector list to modify
757 * @mode: mode to remove
758 *
f453ba04
DA		 759 * Remove @mode from @connector's mode list, then free it.
760 */
86f422d5
LD		 761static void drm_mode_remove(struct drm_connector *connector,
762 struct drm_display_mode *mode)
f453ba04
DA		 763{
764 list_del(&mode->head);
554f1d78 765 drm_mode_destroy(connector->dev, mode);
f453ba04 766}
f453ba04 767
b5571e9d
BB		 768/**
769 * drm_display_info_set_bus_formats - set the supported bus formats
770 * @info: display info to store bus formats in
e37bfa1a
BB		 771 * @formats: array containing the supported bus formats
772 * @num_formats: the number of entries in the fmts array
b5571e9d
BB		 773 *
774 * Store the supported bus formats in display info structure.
775 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
776 * a full list of available formats.
777 */
778int drm_display_info_set_bus_formats(struct drm_display_info *info,
779 const u32 *formats,
780 unsigned int num_formats)
781{
782 u32 *fmts = NULL;
783
784 if (!formats && num_formats)
785 return -EINVAL;
786
787 if (formats && num_formats) {
788 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
789 GFP_KERNEL);
944579c5 790 if (!fmts)
b5571e9d
BB		 791 return -ENOMEM;
792 }
793
794 kfree(info->bus_formats);
795 info->bus_formats = fmts;
796 info->num_bus_formats = num_formats;
797
798 return 0;
799}
800EXPORT_SYMBOL(drm_display_info_set_bus_formats);
801
eaf99c74
CW		 802/**
803 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
804 * @connector: connector to quwery
eaf99c74
CW		 805 *
806 * The kernel supports per-connector configration of its consoles through
807 * use of the video= parameter. This function parses that option and
808 * extracts the user's specified mode (or enable/disable status) for a
809 * particular connector. This is typically only used during the early fbdev
810 * setup.
811 */
812static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
813{
814 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
815 char *option = NULL;
816
817 if (fb_get_options(connector->name, &option))
818 return;
819
820 if (!drm_mode_parse_command_line_for_connector(option,
821 connector,
822 mode))
823 return;
824
825 if (mode->force) {
826 const char *s;
827
828 switch (mode->force) {
829 case DRM_FORCE_OFF:
830 s = "OFF";
831 break;
832 case DRM_FORCE_ON_DIGITAL:
833 s = "ON - dig";
834 break;
835 default:
836 case DRM_FORCE_ON:
837 s = "ON";
838 break;
839 }
840
841 DRM_INFO("forcing %s connector %s\n", connector->name, s);
842 connector->force = mode->force;
843 }
844
845 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
846 connector->name,
847 mode->xres, mode->yres,
848 mode->refresh_specified ? mode->refresh : 60,
849 mode->rb ? " reduced blanking" : "",
850 mode->margins ? " with margins" : "",
851 mode->interlace ? " interlaced" : "");
852}
853
f453ba04
DA		 854/**
855 * drm_connector_init - Init a preallocated connector
856 * @dev: DRM device
857 * @connector: the connector to init
858 * @funcs: callbacks for this connector
065a50ed 859 * @connector_type: user visible type of the connector
f453ba04 860 *
f453ba04
DA		 861 * Initialises a preallocated connector. Connectors should be
862 * subclassed as part of driver connector objects.
6bfc56aa 863 *
c8e32cc1 864 * Returns:
6bfc56aa 865 * Zero on success, error code on failure.
f453ba04 866 */
6bfc56aa
VS		 867int drm_connector_init(struct drm_device *dev,
868 struct drm_connector *connector,
869 const struct drm_connector_funcs *funcs,
870 int connector_type)
f453ba04 871{
ae16c597 872 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa 873 int ret;
b21e3afe
IM		 874 struct ida *connector_ida =
875 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 876
84849903 877 drm_modeset_lock_all(dev);
f453ba04 878
2ee39452 879 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
6bfc56aa 880 if (ret)
2abdd313 881 goto out_unlock;
6bfc56aa 882
7e3bdf4a 883 connector->base.properties = &connector->properties;
f453ba04
DA		 884 connector->dev = dev;
885 connector->funcs = funcs;
f453ba04
DA		 886 connector->connector_type = connector_type;
887 connector->connector_type_id =
b21e3afe
IM		 888 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
889 if (connector->connector_type_id < 0) {
890 ret = connector->connector_type_id;
2abdd313 891 goto out_put;
b21e3afe 892 }
2abdd313
JN		 893 connector->name =
894 kasprintf(GFP_KERNEL, "%s-%d",
895 drm_connector_enum_list[connector_type].name,
896 connector->connector_type_id);
897 if (!connector->name) {
898 ret = -ENOMEM;
899 goto out_put;
900 }
901
f453ba04
DA		 902 INIT_LIST_HEAD(&connector->probed_modes);
903 INIT_LIST_HEAD(&connector->modes);
904 connector->edid_blob_ptr = NULL;
5e2cb2f6 905 connector->status = connector_status_unknown;
f453ba04 906
eaf99c74
CW		 907 drm_connector_get_cmdline_mode(connector);
908
c7eb76f4
DV		 909 /* We should add connectors at the end to avoid upsetting the connector
910 * index too much. */
ae16c597
RC		 911 list_add_tail(&connector->head, &config->connector_list);
912 config->num_connector++;
f453ba04 913
a7331e5c 914 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 915 drm_object_attach_property(&connector->base,
ae16c597 916 config->edid_property,
a7331e5c 917 0);
f453ba04 918
58495563 919 drm_object_attach_property(&connector->base,
ae16c597
RC		 920 config->dpms_property, 0);
921
922 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
923 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
924 }
f453ba04 925
30f65707
TW		 926 connector->debugfs_entry = NULL;
927
2abdd313
JN		 928out_put:
929 if (ret)
930 drm_mode_object_put(dev, &connector->base);
931
932out_unlock:
84849903 933 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 934
935 return ret;
f453ba04
DA		 936}
937EXPORT_SYMBOL(drm_connector_init);
938
939/**
940 * drm_connector_cleanup - cleans up an initialised connector
941 * @connector: connector to cleanup
942 *
f453ba04
DA		 943 * Cleans up the connector but doesn't free the object.
944 */
945void drm_connector_cleanup(struct drm_connector *connector)
946{
947 struct drm_device *dev = connector->dev;
948 struct drm_display_mode *mode, *t;
949
40d9b043
DA		 950 if (connector->tile_group) {
951 drm_mode_put_tile_group(dev, connector->tile_group);
952 connector->tile_group = NULL;
953 }
954
f453ba04
DA		 955 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
956 drm_mode_remove(connector, mode);
957
958 list_for_each_entry_safe(mode, t, &connector->modes, head)
959 drm_mode_remove(connector, mode);
960
b21e3afe
IM		 961 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
962 connector->connector_type_id);
963
b5571e9d 964 kfree(connector->display_info.bus_formats);
f453ba04 965 drm_mode_object_put(dev, &connector->base);
2abdd313
JN		 966 kfree(connector->name);
967 connector->name = NULL;
f453ba04 968 list_del(&connector->head);
6380c509 969 dev->mode_config.num_connector--;
3009c037
TR		 970
971 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
972 if (connector->state && connector->funcs->atomic_destroy_state)
973 connector->funcs->atomic_destroy_state(connector,
974 connector->state);
a18c0af1
TR		 975
976 memset(connector, 0, sizeof(*connector));
f453ba04
DA		 977}
978EXPORT_SYMBOL(drm_connector_cleanup);
979
10f637bf
DV		 980/**
981 * drm_connector_index - find the index of a registered connector
982 * @connector: connector to find index for
983 *
984 * Given a registered connector, return the index of that connector within a DRM
985 * device's list of connectors.
986 */
987unsigned int drm_connector_index(struct drm_connector *connector)
988{
989 unsigned int index = 0;
990 struct drm_connector *tmp;
c7eb76f4
DV		 991 struct drm_mode_config *config = &connector->dev->mode_config;
992
993 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
10f637bf
DV		 994
995 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
996 if (tmp == connector)
997 return index;
998
999 index++;
1000 }
1001
1002 BUG();
1003}
1004EXPORT_SYMBOL(drm_connector_index);
1005
34ea3d38
TW		 1006/**
1007 * drm_connector_register - register a connector
1008 * @connector: the connector to register
1009 *
1010 * Register userspace interfaces for a connector
1011 *
1012 * Returns:
1013 * Zero on success, error code on failure.
1014 */
1015int drm_connector_register(struct drm_connector *connector)
1016{
30f65707
TW		 1017 int ret;
1018
2ee39452
DA		 1019 drm_mode_object_register(connector->dev, &connector->base);
1020
30f65707
TW		 1021 ret = drm_sysfs_connector_add(connector);
1022 if (ret)
1023 return ret;
1024
1025 ret = drm_debugfs_connector_add(connector);
1026 if (ret) {
1027 drm_sysfs_connector_remove(connector);
1028 return ret;
1029 }
1030
1031 return 0;
34ea3d38
TW		 1032}
1033EXPORT_SYMBOL(drm_connector_register);
1034
1035/**
1036 * drm_connector_unregister - unregister a connector
1037 * @connector: the connector to unregister
1038 *
1039 * Unregister userspace interfaces for a connector
1040 */
1041void drm_connector_unregister(struct drm_connector *connector)
1042{
1043 drm_sysfs_connector_remove(connector);
30f65707 1044 drm_debugfs_connector_remove(connector);
34ea3d38
TW		 1045}
1046EXPORT_SYMBOL(drm_connector_unregister);
1047
1048
c8e32cc1
DV		 1049/**
1050 * drm_connector_unplug_all - unregister connector userspace interfaces
1051 * @dev: drm device
1052 *
1053 * This function unregisters all connector userspace interfaces in sysfs. Should
1054 * be call when the device is disconnected, e.g. from an usb driver's
1055 * ->disconnect callback.
1056 */
cbc7e221
DA		 1057void drm_connector_unplug_all(struct drm_device *dev)
1058{
1059 struct drm_connector *connector;
1060
1061 /* taking the mode config mutex ends up in a clash with sysfs */
1062 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
34ea3d38 1063 drm_connector_unregister(connector);
cbc7e221
DA		 1064
1065}
1066EXPORT_SYMBOL(drm_connector_unplug_all);
1067
c8e32cc1
DV		 1068/**
1069 * drm_encoder_init - Init a preallocated encoder
1070 * @dev: drm device
1071 * @encoder: the encoder to init
1072 * @funcs: callbacks for this encoder
1073 * @encoder_type: user visible type of the encoder
1074 *
1075 * Initialises a preallocated encoder. Encoder should be
1076 * subclassed as part of driver encoder objects.
1077 *
1078 * Returns:
1079 * Zero on success, error code on failure.
1080 */
6bfc56aa 1081int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 1082 struct drm_encoder *encoder,
1083 const struct drm_encoder_funcs *funcs,
1084 int encoder_type)
f453ba04 1085{
6bfc56aa
VS		 1086 int ret;
1087
84849903 1088 drm_modeset_lock_all(dev);
f453ba04 1089
6bfc56aa
VS		 1090 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1091 if (ret)
e5748946 1092 goto out_unlock;
f453ba04 1093
6bfc56aa 1094 encoder->dev = dev;
f453ba04
DA		 1095 encoder->encoder_type = encoder_type;
1096 encoder->funcs = funcs;
e5748946
JN		 1097 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1098 drm_encoder_enum_list[encoder_type].name,
1099 encoder->base.id);
1100 if (!encoder->name) {
1101 ret = -ENOMEM;
1102 goto out_put;
1103 }
f453ba04
DA		 1104
1105 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1106 dev->mode_config.num_encoder++;
1107
e5748946
JN		 1108out_put:
1109 if (ret)
1110 drm_mode_object_put(dev, &encoder->base);
1111
1112out_unlock:
84849903 1113 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 1114
1115 return ret;
f453ba04
DA		 1116}
1117EXPORT_SYMBOL(drm_encoder_init);
1118
c8e32cc1
DV		 1119/**
1120 * drm_encoder_cleanup - cleans up an initialised encoder
1121 * @encoder: encoder to cleanup
1122 *
1123 * Cleans up the encoder but doesn't free the object.
1124 */
f453ba04
DA		 1125void drm_encoder_cleanup(struct drm_encoder *encoder)
1126{
1127 struct drm_device *dev = encoder->dev;
4dfd909f 1128
84849903 1129 drm_modeset_lock_all(dev);
f453ba04 1130 drm_mode_object_put(dev, &encoder->base);
e5748946 1131 kfree(encoder->name);
f453ba04 1132 list_del(&encoder->head);
6380c509 1133 dev->mode_config.num_encoder--;
84849903 1134 drm_modeset_unlock_all(dev);
a18c0af1
TR		 1135
1136 memset(encoder, 0, sizeof(*encoder));
f453ba04
DA		 1137}
1138EXPORT_SYMBOL(drm_encoder_cleanup);
1139
35f2c3ae 1140/**
dc415ff9 1141 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1142 * @dev: DRM device
1143 * @plane: plane object to init
1144 * @possible_crtcs: bitmask of possible CRTCs
1145 * @funcs: callbacks for the new plane
1146 * @formats: array of supported formats (%DRM_FORMAT_*)
1147 * @format_count: number of elements in @formats
dc415ff9 1148 * @type: type of plane (overlay, primary, cursor)
35f2c3ae 1149 *
dc415ff9 1150 * Initializes a plane object of type @type.
35f2c3ae 1151 *
c8e32cc1 1152 * Returns:
35f2c3ae
VS		 1153 * Zero on success, error code on failure.
1154 */
dc415ff9
MR		 1155int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1156 unsigned long possible_crtcs,
1157 const struct drm_plane_funcs *funcs,
1158 const uint32_t *formats, uint32_t format_count,
1159 enum drm_plane_type type)
8cf5c917 1160{
6b4959f4 1161 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 1162 int ret;
1163
6bfc56aa
VS		 1164 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1165 if (ret)
baf698b0 1166 return ret;
6bfc56aa 1167
4d02e2de
DV		 1168 drm_modeset_lock_init(&plane->mutex);
1169
4d93914a 1170 plane->base.properties = &plane->properties;
8cf5c917 1171 plane->dev = dev;
8cf5c917 1172 plane->funcs = funcs;
2f6c5389
TR		 1173 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1174 GFP_KERNEL);
8cf5c917
JB		 1175 if (!plane->format_types) {
1176 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1177 drm_mode_object_put(dev, &plane->base);
baf698b0 1178 return -ENOMEM;
8cf5c917
JB		 1179 }
1180
308e5bcb 1181 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1182 plane->format_count = format_count;
1183 plane->possible_crtcs = possible_crtcs;
dc415ff9 1184 plane->type = type;
8cf5c917 1185
6b4959f4
RC		 1186 list_add_tail(&plane->head, &config->plane_list);
1187 config->num_total_plane++;
dc415ff9 1188 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
6b4959f4 1189 config->num_overlay_plane++;
8cf5c917 1190
9922ab5a 1191 drm_object_attach_property(&plane->base,
6b4959f4 1192 config->plane_type_property,
9922ab5a
RC		 1193 plane->type);
1194
6b4959f4
RC		 1195 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1196 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1197 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1198 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1199 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1200 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1201 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1202 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1203 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1204 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1205 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1206 }
1207
baf698b0 1208 return 0;
8cf5c917 1209}
dc415ff9
MR		 1210EXPORT_SYMBOL(drm_universal_plane_init);
1211
1212/**
1213 * drm_plane_init - Initialize a legacy plane
1214 * @dev: DRM device
1215 * @plane: plane object to init
1216 * @possible_crtcs: bitmask of possible CRTCs
1217 * @funcs: callbacks for the new plane
1218 * @formats: array of supported formats (%DRM_FORMAT_*)
1219 * @format_count: number of elements in @formats
1220 * @is_primary: plane type (primary vs overlay)
1221 *
1222 * Legacy API to initialize a DRM plane.
1223 *
1224 * New drivers should call drm_universal_plane_init() instead.
1225 *
1226 * Returns:
1227 * Zero on success, error code on failure.
1228 */
1229int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1230 unsigned long possible_crtcs,
1231 const struct drm_plane_funcs *funcs,
1232 const uint32_t *formats, uint32_t format_count,
1233 bool is_primary)
1234{
1235 enum drm_plane_type type;
1236
1237 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1238 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1239 formats, format_count, type);
1240}
8cf5c917
JB		 1241EXPORT_SYMBOL(drm_plane_init);
1242
35f2c3ae
VS		 1243/**
1244 * drm_plane_cleanup - Clean up the core plane usage
1245 * @plane: plane to cleanup
1246 *
1247 * This function cleans up @plane and removes it from the DRM mode setting
1248 * core. Note that the function does *not* free the plane structure itself,
1249 * this is the responsibility of the caller.
1250 */
8cf5c917
JB		 1251void drm_plane_cleanup(struct drm_plane *plane)
1252{
1253 struct drm_device *dev = plane->dev;
1254
84849903 1255 drm_modeset_lock_all(dev);
8cf5c917
JB		 1256 kfree(plane->format_types);
1257 drm_mode_object_put(dev, &plane->base);
dc415ff9
MR		 1258
1259 BUG_ON(list_empty(&plane->head));
1260
1261 list_del(&plane->head);
1262 dev->mode_config.num_total_plane--;
1263 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1264 dev->mode_config.num_overlay_plane--;
84849903 1265 drm_modeset_unlock_all(dev);
3009c037
TR		 1266
1267 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1268 if (plane->state && plane->funcs->atomic_destroy_state)
1269 plane->funcs->atomic_destroy_state(plane, plane->state);
a18c0af1
TR		 1270
1271 memset(plane, 0, sizeof(*plane));
8cf5c917
JB		 1272}
1273EXPORT_SYMBOL(drm_plane_cleanup);
1274
10f637bf
DV		 1275/**
1276 * drm_plane_index - find the index of a registered plane
1277 * @plane: plane to find index for
1278 *
1279 * Given a registered plane, return the index of that CRTC within a DRM
1280 * device's list of planes.
1281 */
1282unsigned int drm_plane_index(struct drm_plane *plane)
1283{
1284 unsigned int index = 0;
1285 struct drm_plane *tmp;
1286
1287 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1288 if (tmp == plane)
1289 return index;
1290
1291 index++;
1292 }
1293
1294 BUG();
1295}
1296EXPORT_SYMBOL(drm_plane_index);
1297
35f2c3ae
VS		 1298/**
1299 * drm_plane_force_disable - Forcibly disable a plane
1300 * @plane: plane to disable
1301 *
1302 * Forces the plane to be disabled.
1303 *
1304 * Used when the plane's current framebuffer is destroyed,
1305 * and when restoring fbdev mode.
1306 */
9125e618
VS		 1307void drm_plane_force_disable(struct drm_plane *plane)
1308{
1309 int ret;
1310
3d30a59b 1311 if (!plane->fb)
9125e618
VS		 1312 return;
1313
3d30a59b 1314 plane->old_fb = plane->fb;
9125e618 1315 ret = plane->funcs->disable_plane(plane);
731cce48 1316 if (ret) {
9125e618 1317 DRM_ERROR("failed to disable plane with busy fb\n");
3d30a59b 1318 plane->old_fb = NULL;
731cce48
DV		 1319 return;
1320 }
9125e618 1321 /* disconnect the plane from the fb and crtc: */
3d30a59b
DV		 1322 __drm_framebuffer_unreference(plane->old_fb);
1323 plane->old_fb = NULL;
9125e618
VS		 1324 plane->fb = NULL;
1325 plane->crtc = NULL;
1326}
1327EXPORT_SYMBOL(drm_plane_force_disable);
1328
6b4959f4 1329static int drm_mode_create_standard_properties(struct drm_device *dev)
f453ba04 1330{
356af0e1 1331 struct drm_property *prop;
f453ba04
DA		 1332
1333 /*
1334 * Standard properties (apply to all connectors)
1335 */
356af0e1 1336 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
f453ba04
DA		 1337 DRM_MODE_PROP_IMMUTABLE,
1338 "EDID", 0);
356af0e1
RC		 1339 if (!prop)
1340 return -ENOMEM;
1341 dev->mode_config.edid_property = prop;
f453ba04 1342
356af0e1 1343 prop = drm_property_create_enum(dev, 0,
4a67d391
SH		 1344 "DPMS", drm_dpms_enum_list,
1345 ARRAY_SIZE(drm_dpms_enum_list));
356af0e1
RC		 1346 if (!prop)
1347 return -ENOMEM;
1348 dev->mode_config.dpms_property = prop;
6f134d7b 1349
356af0e1
RC		 1350 prop = drm_property_create(dev,
1351 DRM_MODE_PROP_BLOB |
1352 DRM_MODE_PROP_IMMUTABLE,
1353 "PATH", 0);
1354 if (!prop)
1355 return -ENOMEM;
1356 dev->mode_config.path_property = prop;
f453ba04 1357
356af0e1
RC		 1358 prop = drm_property_create(dev,
1359 DRM_MODE_PROP_BLOB |
1360 DRM_MODE_PROP_IMMUTABLE,
1361 "TILE", 0);
1362 if (!prop)
1363 return -ENOMEM;
1364 dev->mode_config.tile_property = prop;
9922ab5a 1365
6b4959f4 1366 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
9922ab5a
RC		 1367 "type", drm_plane_type_enum_list,
1368 ARRAY_SIZE(drm_plane_type_enum_list));
6b4959f4
RC		 1369 if (!prop)
1370 return -ENOMEM;
1371 dev->mode_config.plane_type_property = prop;
1372
1373 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1374 "SRC_X", 0, UINT_MAX);
1375 if (!prop)
1376 return -ENOMEM;
1377 dev->mode_config.prop_src_x = prop;
1378
1379 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1380 "SRC_Y", 0, UINT_MAX);
1381 if (!prop)
1382 return -ENOMEM;
1383 dev->mode_config.prop_src_y = prop;
1384
1385 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1386 "SRC_W", 0, UINT_MAX);
1387 if (!prop)
1388 return -ENOMEM;
1389 dev->mode_config.prop_src_w = prop;
1390
1391 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1392 "SRC_H", 0, UINT_MAX);
1393 if (!prop)
1394 return -ENOMEM;
1395 dev->mode_config.prop_src_h = prop;
1396
1397 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1398 "CRTC_X", INT_MIN, INT_MAX);
1399 if (!prop)
1400 return -ENOMEM;
1401 dev->mode_config.prop_crtc_x = prop;
1402
1403 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1404 "CRTC_Y", INT_MIN, INT_MAX);
1405 if (!prop)
1406 return -ENOMEM;
1407 dev->mode_config.prop_crtc_y = prop;
1408
1409 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1410 "CRTC_W", 0, INT_MAX);
1411 if (!prop)
1412 return -ENOMEM;
1413 dev->mode_config.prop_crtc_w = prop;
1414
1415 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1416 "CRTC_H", 0, INT_MAX);
1417 if (!prop)
1418 return -ENOMEM;
1419 dev->mode_config.prop_crtc_h = prop;
1420
1421 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1422 "FB_ID", DRM_MODE_OBJECT_FB);
1423 if (!prop)
1424 return -ENOMEM;
1425 dev->mode_config.prop_fb_id = prop;
1426
1427 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1428 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1429 if (!prop)
1430 return -ENOMEM;
1431 dev->mode_config.prop_crtc_id = prop;
9922ab5a 1432
eab3bbef
DV		 1433 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1434 "ACTIVE");
1435 if (!prop)
1436 return -ENOMEM;
1437 dev->mode_config.prop_active = prop;
1438
9922ab5a
RC		 1439 return 0;
1440}
1441
f453ba04
DA		 1442/**
1443 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1444 * @dev: DRM device
1445 *
1446 * Called by a driver the first time a DVI-I connector is made.
1447 */
1448int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1449{
1450 struct drm_property *dvi_i_selector;
1451 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1452
1453 if (dev->mode_config.dvi_i_select_subconnector_property)
1454 return 0;
1455
1456 dvi_i_selector =
4a67d391 1457 drm_property_create_enum(dev, 0,
f453ba04 1458 "select subconnector",
4a67d391 1459 drm_dvi_i_select_enum_list,
f453ba04 1460 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1461 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1462
4a67d391 1463 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1464 "subconnector",
4a67d391 1465 drm_dvi_i_subconnector_enum_list,
f453ba04 1466 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1467 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1468
1469 return 0;
1470}
1471EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1472
1473/**
1474 * drm_create_tv_properties - create TV specific connector properties
1475 * @dev: DRM device
1476 * @num_modes: number of different TV formats (modes) supported
1477 * @modes: array of pointers to strings containing name of each format
1478 *
1479 * Called by a driver's TV initialization routine, this function creates
1480 * the TV specific connector properties for a given device. Caller is
1481 * responsible for allocating a list of format names and passing them to
1482 * this routine.
1483 */
2f763312
TR		 1484int drm_mode_create_tv_properties(struct drm_device *dev,
1485 unsigned int num_modes,
f453ba04
DA		 1486 char *modes[])
1487{
1488 struct drm_property *tv_selector;
1489 struct drm_property *tv_subconnector;
2f763312 1490 unsigned int i;
f453ba04
DA		 1491
1492 if (dev->mode_config.tv_select_subconnector_property)
1493 return 0;
1494
1495 /*
1496 * Basic connector properties
1497 */
4a67d391 1498 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1499 "select subconnector",
4a67d391 1500 drm_tv_select_enum_list,
f453ba04 1501 ARRAY_SIZE(drm_tv_select_enum_list));
f453ba04
DA		 1502 dev->mode_config.tv_select_subconnector_property = tv_selector;
1503
1504 tv_subconnector =
4a67d391
SH		 1505 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1506 "subconnector",
1507 drm_tv_subconnector_enum_list,
f453ba04 1508 ARRAY_SIZE(drm_tv_subconnector_enum_list));
f453ba04
DA		 1509 dev->mode_config.tv_subconnector_property = tv_subconnector;
1510
1511 /*
1512 * Other, TV specific properties: margins & TV modes.
1513 */
1514 dev->mode_config.tv_left_margin_property =
d9bc3c02 1515 drm_property_create_range(dev, 0, "left margin", 0, 100);
f453ba04
DA		 1516
1517 dev->mode_config.tv_right_margin_property =
d9bc3c02 1518 drm_property_create_range(dev, 0, "right margin", 0, 100);
f453ba04
DA		 1519
1520 dev->mode_config.tv_top_margin_property =
d9bc3c02 1521 drm_property_create_range(dev, 0, "top margin", 0, 100);
f453ba04
DA		 1522
1523 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1524 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
f453ba04
DA		 1525
1526 dev->mode_config.tv_mode_property =
1527 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1528 "mode", num_modes);
1529 for (i = 0; i < num_modes; i++)
1530 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1531 i, modes[i]);
1532
b6b7902e 1533 dev->mode_config.tv_brightness_property =
d9bc3c02 1534 drm_property_create_range(dev, 0, "brightness", 0, 100);
b6b7902e
FJ		 1535
1536 dev->mode_config.tv_contrast_property =
d9bc3c02 1537 drm_property_create_range(dev, 0, "contrast", 0, 100);
b6b7902e
FJ		 1538
1539 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1540 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
b6b7902e 1541
a75f0236 1542 dev->mode_config.tv_overscan_property =
d9bc3c02 1543 drm_property_create_range(dev, 0, "overscan", 0, 100);
a75f0236
FJ		 1544
1545 dev->mode_config.tv_saturation_property =
d9bc3c02 1546 drm_property_create_range(dev, 0, "saturation", 0, 100);
a75f0236
FJ		 1547
1548 dev->mode_config.tv_hue_property =
d9bc3c02 1549 drm_property_create_range(dev, 0, "hue", 0, 100);
a75f0236 1550
f453ba04
DA		 1551 return 0;
1552}
1553EXPORT_SYMBOL(drm_mode_create_tv_properties);
1554
1555/**
1556 * drm_mode_create_scaling_mode_property - create scaling mode property
1557 * @dev: DRM device
1558 *
1559 * Called by a driver the first time it's needed, must be attached to desired
1560 * connectors.
1561 */
1562int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1563{
1564 struct drm_property *scaling_mode;
f453ba04
DA		 1565
1566 if (dev->mode_config.scaling_mode_property)
1567 return 0;
1568
1569 scaling_mode =
4a67d391
SH		 1570 drm_property_create_enum(dev, 0, "scaling mode",
1571 drm_scaling_mode_enum_list,
f453ba04 1572 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1573
1574 dev->mode_config.scaling_mode_property = scaling_mode;
1575
1576 return 0;
1577}
1578EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1579
ff587e45
VK		 1580/**
1581 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1582 * @dev: DRM device
1583 *
1584 * Called by a driver the first time it's needed, must be attached to desired
1585 * connectors.
1586 *
1587 * Returns:
1a498633 1588 * Zero on success, negative errno on failure.
ff587e45
VK		 1589 */
1590int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1591{
1592 if (dev->mode_config.aspect_ratio_property)
1593 return 0;
1594
1595 dev->mode_config.aspect_ratio_property =
1596 drm_property_create_enum(dev, 0, "aspect ratio",
1597 drm_aspect_ratio_enum_list,
1598 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1599
1600 if (dev->mode_config.aspect_ratio_property == NULL)
1601 return -ENOMEM;
1602
1603 return 0;
1604}
1605EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1606
884840aa
JB		 1607/**
1608 * drm_mode_create_dirty_property - create dirty property
1609 * @dev: DRM device
1610 *
1611 * Called by a driver the first time it's needed, must be attached to desired
1612 * connectors.
1613 */
1614int drm_mode_create_dirty_info_property(struct drm_device *dev)
1615{
1616 struct drm_property *dirty_info;
884840aa
JB		 1617
1618 if (dev->mode_config.dirty_info_property)
1619 return 0;
1620
1621 dirty_info =
4a67d391 1622 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1623 "dirty",
4a67d391 1624 drm_dirty_info_enum_list,
884840aa 1625 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1626 dev->mode_config.dirty_info_property = dirty_info;
1627
1628 return 0;
1629}
1630EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1631
5bb2bbf5
DA		 1632/**
1633 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1634 * @dev: DRM device
1635 *
1636 * Create the the suggested x/y offset property for connectors.
1637 */
1638int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1639{
1640 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1641 return 0;
1642
1643 dev->mode_config.suggested_x_property =
1644 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1645
1646 dev->mode_config.suggested_y_property =
1647 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1648
1649 if (dev->mode_config.suggested_x_property == NULL ||
1650 dev->mode_config.suggested_y_property == NULL)
1651 return -ENOMEM;
1652 return 0;
1653}
1654EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1655
ea9cbb06 1656static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
f453ba04
DA		 1657{
1658 uint32_t total_objects = 0;
1659
1660 total_objects += dev->mode_config.num_crtc;
1661 total_objects += dev->mode_config.num_connector;
1662 total_objects += dev->mode_config.num_encoder;
1663
bd3f0ff9 1664 group->id_list = kcalloc(total_objects, sizeof(uint32_t), GFP_KERNEL);
f453ba04
DA		 1665 if (!group->id_list)
1666 return -ENOMEM;
1667
1668 group->num_crtcs = 0;
1669 group->num_connectors = 0;
1670 group->num_encoders = 0;
1671 return 0;
1672}
1673
ad222799
DA		 1674void drm_mode_group_destroy(struct drm_mode_group *group)
1675{
1676 kfree(group->id_list);
1677 group->id_list = NULL;
1678}
1679
c8e32cc1
DV		 1680/*
1681 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1682 * the drm core's responsibility to set up mode control groups.
1683 */
f453ba04
DA		 1684int drm_mode_group_init_legacy_group(struct drm_device *dev,
1685 struct drm_mode_group *group)
1686{
1687 struct drm_crtc *crtc;
1688 struct drm_encoder *encoder;
1689 struct drm_connector *connector;
1690 int ret;
1691
0cc0b223
TR		 1692 ret = drm_mode_group_init(dev, group);
1693 if (ret)
f453ba04
DA		 1694 return ret;
1695
1696 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1697 group->id_list[group->num_crtcs++] = crtc->base.id;
1698
1699 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1700 group->id_list[group->num_crtcs + group->num_encoders++] =
1701 encoder->base.id;
1702
1703 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1704 group->id_list[group->num_crtcs + group->num_encoders +
1705 group->num_connectors++] = connector->base.id;
1706
1707 return 0;
1708}
9c1dfc55 1709EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
f453ba04 1710
2390cd11
DA		 1711void drm_reinit_primary_mode_group(struct drm_device *dev)
1712{
1713 drm_modeset_lock_all(dev);
1714 drm_mode_group_destroy(&dev->primary->mode_group);
1715 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1716 drm_modeset_unlock_all(dev);
1717}
1718EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1719
f453ba04
DA		 1720/**
1721 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1722 * @out: drm_mode_modeinfo struct to return to the user
1723 * @in: drm_display_mode to use
1724 *
f453ba04
DA		 1725 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1726 * the user.
1727 */
93bbf6db
VS		 1728static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1729 const struct drm_display_mode *in)
f453ba04 1730{
e36fae38
VS		 1731 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1732 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1733 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1734 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1735 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1736 "timing values too large for mode info\n");
1737
f453ba04
DA		 1738 out->clock = in->clock;
1739 out->hdisplay = in->hdisplay;
1740 out->hsync_start = in->hsync_start;
1741 out->hsync_end = in->hsync_end;
1742 out->htotal = in->htotal;
1743 out->hskew = in->hskew;
1744 out->vdisplay = in->vdisplay;
1745 out->vsync_start = in->vsync_start;
1746 out->vsync_end = in->vsync_end;
1747 out->vtotal = in->vtotal;
1748 out->vscan = in->vscan;
1749 out->vrefresh = in->vrefresh;
1750 out->flags = in->flags;
1751 out->type = in->type;
1752 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1753 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1754}
1755
1756/**
74afee7d 1757 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
f453ba04
DA		 1758 * @out: drm_display_mode to return to the user
1759 * @in: drm_mode_modeinfo to use
1760 *
f453ba04
DA		 1761 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1762 * the caller.
90367bf6 1763 *
c8e32cc1 1764 * Returns:
1a498633 1765 * Zero on success, negative errno on failure.
f453ba04 1766 */
93bbf6db
VS		 1767static int drm_crtc_convert_umode(struct drm_display_mode *out,
1768 const struct drm_mode_modeinfo *in)
f453ba04 1769{
90367bf6
VS		 1770 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1771 return -ERANGE;
1772
5848ad40
DL		 1773 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1774 return -EINVAL;
1775
f453ba04
DA		 1776 out->clock = in->clock;
1777 out->hdisplay = in->hdisplay;
1778 out->hsync_start = in->hsync_start;
1779 out->hsync_end = in->hsync_end;
1780 out->htotal = in->htotal;
1781 out->hskew = in->hskew;
1782 out->vdisplay = in->vdisplay;
1783 out->vsync_start = in->vsync_start;
1784 out->vsync_end = in->vsync_end;
1785 out->vtotal = in->vtotal;
1786 out->vscan = in->vscan;
1787 out->vrefresh = in->vrefresh;
1788 out->flags = in->flags;
1789 out->type = in->type;
1790 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1791 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
90367bf6
VS		 1792
1793 return 0;
f453ba04
DA		 1794}
1795
1796/**
1797 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1798 * @dev: drm device for the ioctl
1799 * @data: data pointer for the ioctl
1800 * @file_priv: drm file for the ioctl call
f453ba04 1801 *
f453ba04
DA		 1802 * Construct a set of configuration description structures and return
1803 * them to the user, including CRTC, connector and framebuffer configuration.
1804 *
1805 * Called by the user via ioctl.
1806 *
c8e32cc1 1807 * Returns:
1a498633 1808 * Zero on success, negative errno on failure.
f453ba04
DA		 1809 */
1810int drm_mode_getresources(struct drm_device *dev, void *data,
1811 struct drm_file *file_priv)
1812{
1813 struct drm_mode_card_res *card_res = data;
1814 struct list_head *lh;
1815 struct drm_framebuffer *fb;
1816 struct drm_connector *connector;
1817 struct drm_crtc *crtc;
1818 struct drm_encoder *encoder;
1819 int ret = 0;
1820 int connector_count = 0;
1821 int crtc_count = 0;
1822 int fb_count = 0;
1823 int encoder_count = 0;
1824 int copied = 0, i;
1825 uint32_t __user *fb_id;
1826 uint32_t __user *crtc_id;
1827 uint32_t __user *connector_id;
1828 uint32_t __user *encoder_id;
1829 struct drm_mode_group *mode_group;
1830
fb3b06c8
DA		 1831 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1832 return -EINVAL;
1833
f453ba04 1834
4b096ac1 1835 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1836 /*
1837 * For the non-control nodes we need to limit the list of resources
1838 * by IDs in the group list for this node
1839 */
1840 list_for_each(lh, &file_priv->fbs)
1841 fb_count++;
1842
4b096ac1
DV		 1843 /* handle this in 4 parts */
1844 /* FBs */
1845 if (card_res->count_fbs >= fb_count) {
1846 copied = 0;
1847 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1848 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1849 if (put_user(fb->base.id, fb_id + copied)) {
1850 mutex_unlock(&file_priv->fbs_lock);
1851 return -EFAULT;
1852 }
1853 copied++;
1854 }
1855 }
1856 card_res->count_fbs = fb_count;
1857 mutex_unlock(&file_priv->fbs_lock);
1858
fcf93f69
DV		 1859 /* mode_config.mutex protects the connector list against e.g. DP MST
1860 * connector hot-adding. CRTC/Plane lists are invariant. */
1861 mutex_lock(&dev->mode_config.mutex);
43683057 1862 if (!drm_is_primary_client(file_priv)) {
f453ba04 1863
09f308f7 1864 mode_group = NULL;
f453ba04
DA		 1865 list_for_each(lh, &dev->mode_config.crtc_list)
1866 crtc_count++;
1867
1868 list_for_each(lh, &dev->mode_config.connector_list)
1869 connector_count++;
1870
1871 list_for_each(lh, &dev->mode_config.encoder_list)
1872 encoder_count++;
1873 } else {
1874
09f308f7 1875 mode_group = &file_priv->master->minor->mode_group;
f453ba04
DA		 1876 crtc_count = mode_group->num_crtcs;
1877 connector_count = mode_group->num_connectors;
1878 encoder_count = mode_group->num_encoders;
1879 }
1880
1881 card_res->max_height = dev->mode_config.max_height;
1882 card_res->min_height = dev->mode_config.min_height;
1883 card_res->max_width = dev->mode_config.max_width;
1884 card_res->min_width = dev->mode_config.min_width;
1885
f453ba04
DA		 1886 /* CRTCs */
1887 if (card_res->count_crtcs >= crtc_count) {
1888 copied = 0;
1889 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
09f308f7 1890 if (!mode_group) {
f453ba04
DA		 1891 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1892 head) {
9440106b 1893 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1894 if (put_user(crtc->base.id, crtc_id + copied)) {
1895 ret = -EFAULT;
1896 goto out;
1897 }
1898 copied++;
1899 }
1900 } else {
1901 for (i = 0; i < mode_group->num_crtcs; i++) {
1902 if (put_user(mode_group->id_list[i],
1903 crtc_id + copied)) {
1904 ret = -EFAULT;
1905 goto out;
1906 }
1907 copied++;
1908 }
1909 }
1910 }
1911 card_res->count_crtcs = crtc_count;
1912
1913 /* Encoders */
1914 if (card_res->count_encoders >= encoder_count) {
1915 copied = 0;
1916 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
09f308f7 1917 if (!mode_group) {
f453ba04
DA		 1918 list_for_each_entry(encoder,
1919 &dev->mode_config.encoder_list,
1920 head) {
9440106b 1921 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
83a8cfd3 1922 encoder->name);
f453ba04
DA		 1923 if (put_user(encoder->base.id, encoder_id +
1924 copied)) {
1925 ret = -EFAULT;
1926 goto out;
1927 }
1928 copied++;
1929 }
1930 } else {
1931 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1932 if (put_user(mode_group->id_list[i],
1933 encoder_id + copied)) {
1934 ret = -EFAULT;
1935 goto out;
1936 }
1937 copied++;
1938 }
1939
1940 }
1941 }
1942 card_res->count_encoders = encoder_count;
1943
1944 /* Connectors */
1945 if (card_res->count_connectors >= connector_count) {
1946 copied = 0;
1947 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
09f308f7 1948 if (!mode_group) {
f453ba04
DA		 1949 list_for_each_entry(connector,
1950 &dev->mode_config.connector_list,
1951 head) {
9440106b
JG		 1952 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1953 connector->base.id,
25933820 1954 connector->name);
f453ba04
DA		 1955 if (put_user(connector->base.id,
1956 connector_id + copied)) {
1957 ret = -EFAULT;
1958 goto out;
1959 }
1960 copied++;
1961 }
1962 } else {
1963 int start = mode_group->num_crtcs +
1964 mode_group->num_encoders;
1965 for (i = start; i < start + mode_group->num_connectors; i++) {
1966 if (put_user(mode_group->id_list[i],
1967 connector_id + copied)) {
1968 ret = -EFAULT;
1969 goto out;
1970 }
1971 copied++;
1972 }
1973 }
1974 }
1975 card_res->count_connectors = connector_count;
1976
9440106b 1977 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1978 card_res->count_connectors, card_res->count_encoders);
1979
1980out:
fcf93f69 1981 mutex_unlock(&dev->mode_config.mutex);
f453ba04
DA		 1982 return ret;
1983}
1984
1985/**
1986 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1987 * @dev: drm device for the ioctl
1988 * @data: data pointer for the ioctl
1989 * @file_priv: drm file for the ioctl call
f453ba04 1990 *
f453ba04
DA		 1991 * Construct a CRTC configuration structure to return to the user.
1992 *
1993 * Called by the user via ioctl.
1994 *
c8e32cc1 1995 * Returns:
1a498633 1996 * Zero on success, negative errno on failure.
f453ba04
DA		 1997 */
1998int drm_mode_getcrtc(struct drm_device *dev,
1999 void *data, struct drm_file *file_priv)
2000{
2001 struct drm_mode_crtc *crtc_resp = data;
2002 struct drm_crtc *crtc;
f453ba04 2003
fb3b06c8
DA		 2004 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2005 return -EINVAL;
2006
a2b34e22 2007 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
fcf93f69
DV		 2008 if (!crtc)
2009 return -ENOENT;
f453ba04 2010
fcf93f69 2011 drm_modeset_lock_crtc(crtc, crtc->primary);
f453ba04
DA		 2012 crtc_resp->x = crtc->x;
2013 crtc_resp->y = crtc->y;
2014 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 2015 if (crtc->primary->fb)
2016 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 2017 else
2018 crtc_resp->fb_id = 0;
2019
2020 if (crtc->enabled) {
2021
2022 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2023 crtc_resp->mode_valid = 1;
2024
2025 } else {
2026 crtc_resp->mode_valid = 0;
2027 }
fcf93f69 2028 drm_modeset_unlock_crtc(crtc);
f453ba04 2029
baf698b0 2030 return 0;
f453ba04
DA		 2031}
2032
61d8e328
DL		 2033static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2034 const struct drm_file *file_priv)
2035{
2036 /*
2037 * If user-space hasn't configured the driver to expose the stereo 3D
2038 * modes, don't expose them.
2039 */
2040 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2041 return false;
2042
2043 return true;
2044}
2045
abd69c55
DV		 2046static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2047{
2048 /* For atomic drivers only state objects are synchronously updated and
2049 * protected by modeset locks, so check those first. */
2050 if (connector->state)
2051 return connector->state->best_encoder;
2052 return connector->encoder;
2053}
2054
95cbf110 2055/* helper for getconnector and getproperties ioctls */
88a48e29 2056static int get_properties(struct drm_mode_object *obj, bool atomic,
95cbf110
RC		 2057 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2058 uint32_t *arg_count_props)
2059{
88a48e29
RC		 2060 int props_count;
2061 int i, ret, copied;
2062
2063 props_count = obj->properties->count;
2064 if (!atomic)
2065 props_count -= obj->properties->atomic_count;
95cbf110
RC		 2066
2067 if ((*arg_count_props >= props_count) && props_count) {
88a48e29 2068 for (i = 0, copied = 0; copied < props_count; i++) {
95cbf110
RC		 2069 struct drm_property *prop = obj->properties->properties[i];
2070 uint64_t val;
2071
88a48e29
RC		 2072 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2073 continue;
2074
95cbf110
RC		 2075 ret = drm_object_property_get_value(obj, prop, &val);
2076 if (ret)
2077 return ret;
2078
2079 if (put_user(prop->base.id, prop_ptr + copied))
2080 return -EFAULT;
2081
2082 if (put_user(val, prop_values + copied))
2083 return -EFAULT;
2084
2085 copied++;
2086 }
2087 }
2088 *arg_count_props = props_count;
2089
2090 return 0;
2091}
2092
f453ba04
DA		 2093/**
2094 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 2095 * @dev: drm device for the ioctl
2096 * @data: data pointer for the ioctl
2097 * @file_priv: drm file for the ioctl call
f453ba04 2098 *
f453ba04
DA		 2099 * Construct a connector configuration structure to return to the user.
2100 *
2101 * Called by the user via ioctl.
2102 *
c8e32cc1 2103 * Returns:
1a498633 2104 * Zero on success, negative errno on failure.
f453ba04
DA		 2105 */
2106int drm_mode_getconnector(struct drm_device *dev, void *data,
2107 struct drm_file *file_priv)
2108{
2109 struct drm_mode_get_connector *out_resp = data;
f453ba04 2110 struct drm_connector *connector;
abd69c55 2111 struct drm_encoder *encoder;
f453ba04
DA		 2112 struct drm_display_mode *mode;
2113 int mode_count = 0;
f453ba04
DA		 2114 int encoders_count = 0;
2115 int ret = 0;
2116 int copied = 0;
2117 int i;
2118 struct drm_mode_modeinfo u_mode;
2119 struct drm_mode_modeinfo __user *mode_ptr;
f453ba04
DA		 2120 uint32_t __user *encoder_ptr;
2121
fb3b06c8
DA		 2122 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2123 return -EINVAL;
2124
f453ba04
DA		 2125 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2126
9440106b 2127 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 2128
7b24056b 2129 mutex_lock(&dev->mode_config.mutex);
ccfc0865 2130 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
f453ba04 2131
a2b34e22
RC		 2132 connector = drm_connector_find(dev, out_resp->connector_id);
2133 if (!connector) {
f27657f2 2134 ret = -ENOENT;
f453ba04
DA		 2135 goto out;
2136 }
f453ba04 2137
01073b08
TR		 2138 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2139 if (connector->encoder_ids[i] != 0)
f453ba04 2140 encoders_count++;
f453ba04
DA		 2141
2142 if (out_resp->count_modes == 0) {
2143 connector->funcs->fill_modes(connector,
2144 dev->mode_config.max_width,
2145 dev->mode_config.max_height);
2146 }
2147
2148 /* delayed so we get modes regardless of pre-fill_modes state */
2149 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 2150 if (drm_mode_expose_to_userspace(mode, file_priv))
2151 mode_count++;
f453ba04
DA		 2152
2153 out_resp->connector_id = connector->base.id;
2154 out_resp->connector_type = connector->connector_type;
2155 out_resp->connector_type_id = connector->connector_type_id;
2156 out_resp->mm_width = connector->display_info.width_mm;
2157 out_resp->mm_height = connector->display_info.height_mm;
2158 out_resp->subpixel = connector->display_info.subpixel_order;
2159 out_resp->connection = connector->status;
abd69c55
DV		 2160 encoder = drm_connector_get_encoder(connector);
2161 if (encoder)
2162 out_resp->encoder_id = encoder->base.id;
f453ba04
DA		 2163 else
2164 out_resp->encoder_id = 0;
2165
2166 /*
2167 * This ioctl is called twice, once to determine how much space is
2168 * needed, and the 2nd time to fill it.
2169 */
2170 if ((out_resp->count_modes >= mode_count) && mode_count) {
2171 copied = 0;
81f6c7f8 2172 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 2173 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 2174 if (!drm_mode_expose_to_userspace(mode, file_priv))
2175 continue;
2176
f453ba04
DA		 2177 drm_crtc_convert_to_umode(&u_mode, mode);
2178 if (copy_to_user(mode_ptr + copied,
2179 &u_mode, sizeof(u_mode))) {
2180 ret = -EFAULT;
2181 goto out;
2182 }
2183 copied++;
2184 }
2185 }
2186 out_resp->count_modes = mode_count;
2187
88a48e29 2188 ret = get_properties(&connector->base, file_priv->atomic,
95cbf110
RC		 2189 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2190 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2191 &out_resp->count_props);
2192 if (ret)
2193 goto out;
f453ba04
DA		 2194
2195 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2196 copied = 0;
81f6c7f8 2197 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 2198 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2199 if (connector->encoder_ids[i] != 0) {
2200 if (put_user(connector->encoder_ids[i],
2201 encoder_ptr + copied)) {
2202 ret = -EFAULT;
2203 goto out;
2204 }
2205 copied++;
2206 }
2207 }
2208 }
2209 out_resp->count_encoders = encoders_count;
2210
2211out:
ccfc0865 2212 drm_modeset_unlock(&dev->mode_config.connection_mutex);
7b24056b
DV		 2213 mutex_unlock(&dev->mode_config.mutex);
2214
f453ba04
DA		 2215 return ret;
2216}
2217
abd69c55
DV		 2218static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2219{
2220 struct drm_connector *connector;
2221 struct drm_device *dev = encoder->dev;
2222 bool uses_atomic = false;
2223
2224 /* For atomic drivers only state objects are synchronously updated and
2225 * protected by modeset locks, so check those first. */
2226 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2227 if (!connector->state)
2228 continue;
2229
2230 uses_atomic = true;
2231
2232 if (connector->state->best_encoder != encoder)
2233 continue;
2234
2235 return connector->state->crtc;
2236 }
2237
2238 /* Don't return stale data (e.g. pending async disable). */
2239 if (uses_atomic)
2240 return NULL;
2241
2242 return encoder->crtc;
2243}
2244
c8e32cc1
DV		 2245/**
2246 * drm_mode_getencoder - get encoder configuration
2247 * @dev: drm device for the ioctl
2248 * @data: data pointer for the ioctl
2249 * @file_priv: drm file for the ioctl call
2250 *
2251 * Construct a encoder configuration structure to return to the user.
2252 *
2253 * Called by the user via ioctl.
2254 *
2255 * Returns:
1a498633 2256 * Zero on success, negative errno on failure.
c8e32cc1 2257 */
f453ba04
DA		 2258int drm_mode_getencoder(struct drm_device *dev, void *data,
2259 struct drm_file *file_priv)
2260{
2261 struct drm_mode_get_encoder *enc_resp = data;
f453ba04 2262 struct drm_encoder *encoder;
abd69c55 2263 struct drm_crtc *crtc;
f453ba04 2264
fb3b06c8
DA		 2265 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2266 return -EINVAL;
2267
a2b34e22 2268 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
fcf93f69
DV		 2269 if (!encoder)
2270 return -ENOENT;
f453ba04 2271
fcf93f69 2272 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2273 crtc = drm_encoder_get_crtc(encoder);
2274 if (crtc)
2275 enc_resp->crtc_id = crtc->base.id;
2276 else if (encoder->crtc)
f453ba04
DA		 2277 enc_resp->crtc_id = encoder->crtc->base.id;
2278 else
2279 enc_resp->crtc_id = 0;
fcf93f69
DV		 2280 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2281
f453ba04
DA		 2282 enc_resp->encoder_type = encoder->encoder_type;
2283 enc_resp->encoder_id = encoder->base.id;
2284 enc_resp->possible_crtcs = encoder->possible_crtcs;
2285 enc_resp->possible_clones = encoder->possible_clones;
2286
baf698b0 2287 return 0;
f453ba04
DA		 2288}
2289
8cf5c917 2290/**
c8e32cc1 2291 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 2292 * @dev: DRM device
2293 * @data: ioctl data
2294 * @file_priv: DRM file info
2295 *
c8e32cc1
DV		 2296 * Construct a list of plane ids to return to the user.
2297 *
2298 * Called by the user via ioctl.
2299 *
2300 * Returns:
1a498633 2301 * Zero on success, negative errno on failure.
8cf5c917
JB		 2302 */
2303int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 2304 struct drm_file *file_priv)
8cf5c917
JB		 2305{
2306 struct drm_mode_get_plane_res *plane_resp = data;
2307 struct drm_mode_config *config;
2308 struct drm_plane *plane;
2309 uint32_t __user *plane_ptr;
fcf93f69 2310 int copied = 0;
681e7ec7 2311 unsigned num_planes;
8cf5c917
JB		 2312
2313 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2314 return -EINVAL;
2315
8cf5c917
JB		 2316 config = &dev->mode_config;
2317
681e7ec7
MR		 2318 if (file_priv->universal_planes)
2319 num_planes = config->num_total_plane;
2320 else
2321 num_planes = config->num_overlay_plane;
2322
8cf5c917
JB		 2323 /*
2324 * This ioctl is called twice, once to determine how much space is
2325 * needed, and the 2nd time to fill it.
2326 */
681e7ec7
MR		 2327 if (num_planes &&
2328 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 2329 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917 2330
fcf93f69 2331 /* Plane lists are invariant, no locking needed. */
8cf5c917 2332 list_for_each_entry(plane, &config->plane_list, head) {
681e7ec7
MR		 2333 /*
2334 * Unless userspace set the 'universal planes'
2335 * capability bit, only advertise overlays.
2336 */
2337 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2338 !file_priv->universal_planes)
e27dde3e
MR		 2339 continue;
2340
fcf93f69
DV		 2341 if (put_user(plane->base.id, plane_ptr + copied))
2342 return -EFAULT;
8cf5c917
JB		 2343 copied++;
2344 }
2345 }
681e7ec7 2346 plane_resp->count_planes = num_planes;
8cf5c917 2347
fcf93f69 2348 return 0;
8cf5c917
JB		 2349}
2350
2351/**
c8e32cc1 2352 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2353 * @dev: DRM device
2354 * @data: ioctl data
2355 * @file_priv: DRM file info
2356 *
c8e32cc1
DV		 2357 * Construct a plane configuration structure to return to the user.
2358 *
2359 * Called by the user via ioctl.
2360 *
2361 * Returns:
1a498633 2362 * Zero on success, negative errno on failure.
8cf5c917
JB		 2363 */
2364int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2365 struct drm_file *file_priv)
8cf5c917
JB		 2366{
2367 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2368 struct drm_plane *plane;
2369 uint32_t __user *format_ptr;
8cf5c917
JB		 2370
2371 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2372 return -EINVAL;
2373
a2b34e22 2374 plane = drm_plane_find(dev, plane_resp->plane_id);
fcf93f69
DV		 2375 if (!plane)
2376 return -ENOENT;
8cf5c917 2377
fcf93f69 2378 drm_modeset_lock(&plane->mutex, NULL);
8cf5c917
JB		 2379 if (plane->crtc)
2380 plane_resp->crtc_id = plane->crtc->base.id;
2381 else
2382 plane_resp->crtc_id = 0;
2383
2384 if (plane->fb)
2385 plane_resp->fb_id = plane->fb->base.id;
2386 else
2387 plane_resp->fb_id = 0;
fcf93f69 2388 drm_modeset_unlock(&plane->mutex);
8cf5c917
JB		 2389
2390 plane_resp->plane_id = plane->base.id;
2391 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2392 plane_resp->gamma_size = 0;
8cf5c917
JB		 2393
2394 /*
2395 * This ioctl is called twice, once to determine how much space is
2396 * needed, and the 2nd time to fill it.
2397 */
2398 if (plane->format_count &&
2399 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2400 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2401 if (copy_to_user(format_ptr,
2402 plane->format_types,
2403 sizeof(uint32_t) * plane->format_count)) {
fcf93f69 2404 return -EFAULT;
8cf5c917
JB		 2405 }
2406 }
2407 plane_resp->count_format_types = plane->format_count;
2408
baf698b0 2409 return 0;
8cf5c917
JB		 2410}
2411
b36552b3
MR		 2412/*
2413 * setplane_internal - setplane handler for internal callers
8cf5c917 2414 *
b36552b3
MR		 2415 * Note that we assume an extra reference has already been taken on fb. If the
2416 * update fails, this reference will be dropped before return; if it succeeds,
2417 * the previous framebuffer (if any) will be unreferenced instead.
c8e32cc1 2418 *
b36552b3 2419 * src_{x,y,w,h} are provided in 16.16 fixed point format
8cf5c917 2420 */
f2b50c11
DV		 2421static int __setplane_internal(struct drm_plane *plane,
2422 struct drm_crtc *crtc,
2423 struct drm_framebuffer *fb,
2424 int32_t crtc_x, int32_t crtc_y,
2425 uint32_t crtc_w, uint32_t crtc_h,
2426 /* src_{x,y,w,h} values are 16.16 fixed point */
2427 uint32_t src_x, uint32_t src_y,
2428 uint32_t src_w, uint32_t src_h)
8cf5c917 2429{
8cf5c917 2430 int ret = 0;
42ef8789 2431 unsigned int fb_width, fb_height;
2f763312 2432 unsigned int i;
8cf5c917 2433
8cf5c917 2434 /* No fb means shut it down */
b36552b3 2435 if (!fb) {
3d30a59b 2436 plane->old_fb = plane->fb;
731cce48
DV		 2437 ret = plane->funcs->disable_plane(plane);
2438 if (!ret) {
2439 plane->crtc = NULL;
2440 plane->fb = NULL;
2441 } else {
3d30a59b 2442 plane->old_fb = NULL;
731cce48 2443 }
8cf5c917
JB		 2444 goto out;
2445 }
2446
7f994f3f
MR		 2447 /* Check whether this plane is usable on this CRTC */
2448 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2449 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2450 ret = -EINVAL;
2451 goto out;
2452 }
2453
62443be6
VS		 2454 /* Check whether this plane supports the fb pixel format. */
2455 for (i = 0; i < plane->format_count; i++)
2456 if (fb->pixel_format == plane->format_types[i])
2457 break;
2458 if (i == plane->format_count) {
6ba6d03e
VS		 2459 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2460 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2461 ret = -EINVAL;
2462 goto out;
2463 }
2464
42ef8789
VS		 2465 fb_width = fb->width << 16;
2466 fb_height = fb->height << 16;
2467
2468 /* Make sure source coordinates are inside the fb. */
b36552b3
MR		 2469 if (src_w > fb_width ||
2470 src_x > fb_width - src_w ||
2471 src_h > fb_height ||
2472 src_y > fb_height - src_h) {
42ef8789
VS		 2473 DRM_DEBUG_KMS("Invalid source coordinates "
2474 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
b36552b3
MR		 2475 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2476 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2477 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2478 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
42ef8789
VS		 2479 ret = -ENOSPC;
2480 goto out;
2481 }
2482
3d30a59b 2483 plane->old_fb = plane->fb;
8cf5c917 2484 ret = plane->funcs->update_plane(plane, crtc, fb,
b36552b3
MR		 2485 crtc_x, crtc_y, crtc_w, crtc_h,
2486 src_x, src_y, src_w, src_h);
8cf5c917
JB		 2487 if (!ret) {
2488 plane->crtc = crtc;
2489 plane->fb = fb;
35f8badc 2490 fb = NULL;
0fe27f06 2491 } else {
3d30a59b 2492 plane->old_fb = NULL;
8cf5c917
JB		 2493 }
2494
2495out:
6c2a7532
DV		 2496 if (fb)
2497 drm_framebuffer_unreference(fb);
3d30a59b
DV		 2498 if (plane->old_fb)
2499 drm_framebuffer_unreference(plane->old_fb);
2500 plane->old_fb = NULL;
8cf5c917
JB		 2501
2502 return ret;
f2b50c11 2503}
b36552b3 2504
f2b50c11
DV		 2505static int setplane_internal(struct drm_plane *plane,
2506 struct drm_crtc *crtc,
2507 struct drm_framebuffer *fb,
2508 int32_t crtc_x, int32_t crtc_y,
2509 uint32_t crtc_w, uint32_t crtc_h,
2510 /* src_{x,y,w,h} values are 16.16 fixed point */
2511 uint32_t src_x, uint32_t src_y,
2512 uint32_t src_w, uint32_t src_h)
2513{
2514 int ret;
2515
2516 drm_modeset_lock_all(plane->dev);
2517 ret = __setplane_internal(plane, crtc, fb,
2518 crtc_x, crtc_y, crtc_w, crtc_h,
2519 src_x, src_y, src_w, src_h);
2520 drm_modeset_unlock_all(plane->dev);
2521
2522 return ret;
b36552b3
MR		 2523}
2524
2525/**
2526 * drm_mode_setplane - configure a plane's configuration
2527 * @dev: DRM device
2528 * @data: ioctl data*
2529 * @file_priv: DRM file info
2530 *
2531 * Set plane configuration, including placement, fb, scaling, and other factors.
2532 * Or pass a NULL fb to disable (planes may be disabled without providing a
2533 * valid crtc).
2534 *
2535 * Returns:
1a498633 2536 * Zero on success, negative errno on failure.
b36552b3
MR		 2537 */
2538int drm_mode_setplane(struct drm_device *dev, void *data,
2539 struct drm_file *file_priv)
2540{
2541 struct drm_mode_set_plane *plane_req = data;
b36552b3
MR		 2542 struct drm_plane *plane;
2543 struct drm_crtc *crtc = NULL;
2544 struct drm_framebuffer *fb = NULL;
2545
2546 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2547 return -EINVAL;
2548
2549 /* Give drivers some help against integer overflows */
2550 if (plane_req->crtc_w > INT_MAX ||
2551 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2552 plane_req->crtc_h > INT_MAX ||
2553 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2554 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2555 plane_req->crtc_w, plane_req->crtc_h,
2556 plane_req->crtc_x, plane_req->crtc_y);
2557 return -ERANGE;
2558 }
2559
2560 /*
2561 * First, find the plane, crtc, and fb objects. If not available,
2562 * we don't bother to call the driver.
2563 */
933f622f
RC		 2564 plane = drm_plane_find(dev, plane_req->plane_id);
2565 if (!plane) {
b36552b3
MR		 2566 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2567 plane_req->plane_id);
2568 return -ENOENT;
2569 }
b36552b3
MR		 2570
2571 if (plane_req->fb_id) {
2572 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2573 if (!fb) {
2574 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2575 plane_req->fb_id);
2576 return -ENOENT;
2577 }
2578
933f622f
RC		 2579 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2580 if (!crtc) {
b36552b3
MR		 2581 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2582 plane_req->crtc_id);
2583 return -ENOENT;
2584 }
b36552b3
MR		 2585 }
2586
161d0dc1
MR		 2587 /*
2588 * setplane_internal will take care of deref'ing either the old or new
2589 * framebuffer depending on success.
2590 */
17cfd91f 2591 return setplane_internal(plane, crtc, fb,
b36552b3
MR		 2592 plane_req->crtc_x, plane_req->crtc_y,
2593 plane_req->crtc_w, plane_req->crtc_h,
2594 plane_req->src_x, plane_req->src_y,
2595 plane_req->src_w, plane_req->src_h);
8cf5c917
JB		 2596}
2597
2d13b679
DV		 2598/**
2599 * drm_mode_set_config_internal - helper to call ->set_config
2600 * @set: modeset config to set
2601 *
2602 * This is a little helper to wrap internal calls to the ->set_config driver
2603 * interface. The only thing it adds is correct refcounting dance.
4dfd909f 2604 *
c8e32cc1 2605 * Returns:
1a498633 2606 * Zero on success, negative errno on failure.
2d13b679
DV		 2607 */
2608int drm_mode_set_config_internal(struct drm_mode_set *set)
2609{
2610 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2611 struct drm_framebuffer *fb;
2612 struct drm_crtc *tmp;
b0d12325
DV		 2613 int ret;
2614
5cef29aa
DV		 2615 /*
2616 * NOTE: ->set_config can also disable other crtcs (if we steal all
2617 * connectors from it), hence we need to refcount the fbs across all
2618 * crtcs. Atomic modeset will have saner semantics ...
2619 */
2620 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
3d30a59b 2621 tmp->primary->old_fb = tmp->primary->fb;
5cef29aa 2622
b0d12325 2623 fb = set->fb;
2d13b679 2624
b0d12325
DV		 2625 ret = crtc->funcs->set_config(set);
2626 if (ret == 0) {
e13161af 2627 crtc->primary->crtc = crtc;
0fe27f06 2628 crtc->primary->fb = fb;
5cef29aa 2629 }
cc85e121 2630
5cef29aa 2631 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
f4510a27
MR		 2632 if (tmp->primary->fb)
2633 drm_framebuffer_reference(tmp->primary->fb);
3d30a59b
DV		 2634 if (tmp->primary->old_fb)
2635 drm_framebuffer_unreference(tmp->primary->old_fb);
2636 tmp->primary->old_fb = NULL;
b0d12325
DV		 2637 }
2638
2639 return ret;
2d13b679
DV		 2640}
2641EXPORT_SYMBOL(drm_mode_set_config_internal);
2642
ecb7e16b
GP		 2643/**
2644 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2645 * @mode: mode to query
2646 * @hdisplay: hdisplay value to fill in
2647 * @vdisplay: vdisplay value to fill in
2648 *
2649 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2650 * the appropriate layout.
2651 */
2652void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2653 int *hdisplay, int *vdisplay)
2654{
2655 struct drm_display_mode adjusted;
2656
2657 drm_mode_copy(&adjusted, mode);
2658 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2659 *hdisplay = adjusted.crtc_hdisplay;
2660 *vdisplay = adjusted.crtc_vdisplay;
2661}
2662EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2663
af93629d
MR		 2664/**
2665 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2666 * CRTC viewport
2667 * @crtc: CRTC that framebuffer will be displayed on
2668 * @x: x panning
2669 * @y: y panning
2670 * @mode: mode that framebuffer will be displayed under
2671 * @fb: framebuffer to check size of
c11e9283 2672 */
af93629d
MR		 2673int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2674 int x, int y,
2675 const struct drm_display_mode *mode,
2676 const struct drm_framebuffer *fb)
c11e9283
DL		 2677
2678{
2679 int hdisplay, vdisplay;
2680
ecb7e16b 2681 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
a0c1bbb0 2682
c11e9283
DL		 2683 if (crtc->invert_dimensions)
2684 swap(hdisplay, vdisplay);
2685
2686 if (hdisplay > fb->width ||
2687 vdisplay > fb->height ||
2688 x > fb->width - hdisplay ||
2689 y > fb->height - vdisplay) {
2690 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2691 fb->width, fb->height, hdisplay, vdisplay, x, y,
2692 crtc->invert_dimensions ? " (inverted)" : "");
2693 return -ENOSPC;
2694 }
2695
2696 return 0;
2697}
af93629d 2698EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2699
f453ba04
DA		 2700/**
2701 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2702 * @dev: drm device for the ioctl
2703 * @data: data pointer for the ioctl
2704 * @file_priv: drm file for the ioctl call
f453ba04 2705 *
f453ba04
DA		 2706 * Build a new CRTC configuration based on user request.
2707 *
2708 * Called by the user via ioctl.
2709 *
c8e32cc1 2710 * Returns:
1a498633 2711 * Zero on success, negative errno on failure.
f453ba04
DA		 2712 */
2713int drm_mode_setcrtc(struct drm_device *dev, void *data,
2714 struct drm_file *file_priv)
2715{
2716 struct drm_mode_config *config = &dev->mode_config;
2717 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2718 struct drm_crtc *crtc;
f453ba04
DA		 2719 struct drm_connector **connector_set = NULL, *connector;
2720 struct drm_framebuffer *fb = NULL;
2721 struct drm_display_mode *mode = NULL;
2722 struct drm_mode_set set;
2723 uint32_t __user *set_connectors_ptr;
4a1b0714 2724 int ret;
f453ba04
DA		 2725 int i;
2726
fb3b06c8
DA		 2727 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2728 return -EINVAL;
2729
1d97e915
VS		 2730 /* For some reason crtc x/y offsets are signed internally. */
2731 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2732 return -ERANGE;
2733
84849903 2734 drm_modeset_lock_all(dev);
a2b34e22
RC		 2735 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2736 if (!crtc) {
58367ed6 2737 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2738 ret = -ENOENT;
f453ba04
DA		 2739 goto out;
2740 }
9440106b 2741 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 2742
2743 if (crtc_req->mode_valid) {
2744 /* If we have a mode we need a framebuffer. */
2745 /* If we pass -1, set the mode with the currently bound fb */
2746 if (crtc_req->fb_id == -1) {
f4510a27 2747 if (!crtc->primary->fb) {
6653cc8d
VS		 2748 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2749 ret = -EINVAL;
2750 goto out;
f453ba04 2751 }
f4510a27 2752 fb = crtc->primary->fb;
b0d12325
DV		 2753 /* Make refcounting symmetric with the lookup path. */
2754 drm_framebuffer_reference(fb);
f453ba04 2755 } else {
786b99ed
DV		 2756 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2757 if (!fb) {
58367ed6
ZY		 2758 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2759 crtc_req->fb_id);
37c4e705 2760 ret = -ENOENT;
f453ba04
DA		 2761 goto out;
2762 }
f453ba04
DA		 2763 }
2764
2765 mode = drm_mode_create(dev);
ee34ab5b
VS		 2766 if (!mode) {
2767 ret = -ENOMEM;
2768 goto out;
2769 }
2770
90367bf6
VS		 2771 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2772 if (ret) {
2773 DRM_DEBUG_KMS("Invalid mode\n");
2774 goto out;
2775 }
2776
23e1ce89
VS		 2777 mode->status = drm_mode_validate_basic(mode);
2778 if (mode->status != MODE_OK) {
2779 ret = -EINVAL;
2780 goto out;
2781 }
2782
f453ba04 2783 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2784
c11e9283
DL		 2785 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2786 mode, fb);
2787 if (ret)
5f61bb42 2788 goto out;
c11e9283 2789
f453ba04
DA		 2790 }
2791
2792 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2793 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2794 ret = -EINVAL;
2795 goto out;
2796 }
2797
7781de74 2798 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2799 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2800 crtc_req->count_connectors);
2801 ret = -EINVAL;
2802 goto out;
2803 }
2804
2805 if (crtc_req->count_connectors > 0) {
2806 u32 out_id;
2807
2808 /* Avoid unbounded kernel memory allocation */
2809 if (crtc_req->count_connectors > config->num_connector) {
2810 ret = -EINVAL;
2811 goto out;
2812 }
2813
2f6c5389
TR		 2814 connector_set = kmalloc_array(crtc_req->count_connectors,
2815 sizeof(struct drm_connector *),
2816 GFP_KERNEL);
f453ba04
DA		 2817 if (!connector_set) {
2818 ret = -ENOMEM;
2819 goto out;
2820 }
2821
2822 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2823 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2824 if (get_user(out_id, &set_connectors_ptr[i])) {
2825 ret = -EFAULT;
2826 goto out;
2827 }
2828
a2b34e22
RC		 2829 connector = drm_connector_find(dev, out_id);
2830 if (!connector) {
58367ed6
ZY		 2831 DRM_DEBUG_KMS("Connector id %d unknown\n",
2832 out_id);
f27657f2 2833 ret = -ENOENT;
f453ba04
DA		 2834 goto out;
2835 }
9440106b
JG		 2836 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2837 connector->base.id,
25933820 2838 connector->name);
f453ba04
DA		 2839
2840 connector_set[i] = connector;
2841 }
2842 }
2843
2844 set.crtc = crtc;
2845 set.x = crtc_req->x;
2846 set.y = crtc_req->y;
2847 set.mode = mode;
2848 set.connectors = connector_set;
2849 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2850 set.fb = fb;
2d13b679 2851 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2852
2853out:
b0d12325
DV		 2854 if (fb)
2855 drm_framebuffer_unreference(fb);
2856
f453ba04 2857 kfree(connector_set);
ee34ab5b 2858 drm_mode_destroy(dev, mode);
84849903 2859 drm_modeset_unlock_all(dev);
f453ba04
DA		 2860 return ret;
2861}
2862
161d0dc1
MR		 2863/**
2864 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2865 * universal plane handler call
2866 * @crtc: crtc to update cursor for
2867 * @req: data pointer for the ioctl
2868 * @file_priv: drm file for the ioctl call
2869 *
2870 * Legacy cursor ioctl's work directly with driver buffer handles. To
2871 * translate legacy ioctl calls into universal plane handler calls, we need to
2872 * wrap the native buffer handle in a drm_framebuffer.
2873 *
2874 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2875 * buffer with a pitch of 4*width; the universal plane interface should be used
2876 * directly in cases where the hardware can support other buffer settings and
2877 * userspace wants to make use of these capabilities.
2878 *
2879 * Returns:
1a498633 2880 * Zero on success, negative errno on failure.
161d0dc1
MR		 2881 */
2882static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2883 struct drm_mode_cursor2 *req,
2884 struct drm_file *file_priv)
2885{
2886 struct drm_device *dev = crtc->dev;
2887 struct drm_framebuffer *fb = NULL;
2888 struct drm_mode_fb_cmd2 fbreq = {
2889 .width = req->width,
2890 .height = req->height,
2891 .pixel_format = DRM_FORMAT_ARGB8888,
2892 .pitches = { req->width * 4 },
2893 .handles = { req->handle },
2894 };
2895 int32_t crtc_x, crtc_y;
2896 uint32_t crtc_w = 0, crtc_h = 0;
2897 uint32_t src_w = 0, src_h = 0;
2898 int ret = 0;
2899
2900 BUG_ON(!crtc->cursor);
f2b50c11 2901 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
161d0dc1
MR		 2902
2903 /*
2904 * Obtain fb we'll be using (either new or existing) and take an extra
2905 * reference to it if fb != null. setplane will take care of dropping
2906 * the reference if the plane update fails.
2907 */
2908 if (req->flags & DRM_MODE_CURSOR_BO) {
2909 if (req->handle) {
2910 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2911 if (IS_ERR(fb)) {
2912 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2913 return PTR_ERR(fb);
2914 }
2915
2916 drm_framebuffer_reference(fb);
2917 } else {
2918 fb = NULL;
2919 }
2920 } else {
161d0dc1
MR		 2921 fb = crtc->cursor->fb;
2922 if (fb)
2923 drm_framebuffer_reference(fb);
161d0dc1
MR		 2924 }
2925
2926 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2927 crtc_x = req->x;
2928 crtc_y = req->y;
2929 } else {
2930 crtc_x = crtc->cursor_x;
2931 crtc_y = crtc->cursor_y;
2932 }
2933
2934 if (fb) {
2935 crtc_w = fb->width;
2936 crtc_h = fb->height;
2937 src_w = fb->width << 16;
2938 src_h = fb->height << 16;
2939 }
2940
2941 /*
2942 * setplane_internal will take care of deref'ing either the old or new
2943 * framebuffer depending on success.
2944 */
f2b50c11 2945 ret = __setplane_internal(crtc->cursor, crtc, fb,
161d0dc1
MR		 2946 crtc_x, crtc_y, crtc_w, crtc_h,
2947 0, 0, src_w, src_h);
2948
2949 /* Update successful; save new cursor position, if necessary */
2950 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2951 crtc->cursor_x = req->x;
2952 crtc->cursor_y = req->y;
2953 }
2954
2955 return ret;
2956}
2957
4c813d4d
DA		 2958static int drm_mode_cursor_common(struct drm_device *dev,
2959 struct drm_mode_cursor2 *req,
2960 struct drm_file *file_priv)
f453ba04 2961{
f453ba04
DA		 2962 struct drm_crtc *crtc;
2963 int ret = 0;
2964
fb3b06c8
DA		 2965 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2966 return -EINVAL;
2967
7c4eaca4 2968 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 2969 return -EINVAL;
f453ba04 2970
a2b34e22
RC		 2971 crtc = drm_crtc_find(dev, req->crtc_id);
2972 if (!crtc) {
58367ed6 2973 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 2974 return -ENOENT;
f453ba04 2975 }
f453ba04 2976
161d0dc1
MR		 2977 /*
2978 * If this crtc has a universal cursor plane, call that plane's update
2979 * handler rather than using legacy cursor handlers.
2980 */
4d02e2de 2981 drm_modeset_lock_crtc(crtc, crtc->cursor);
f2b50c11
DV		 2982 if (crtc->cursor) {
2983 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2984 goto out;
2985 }
2986
f453ba04 2987 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 2988 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 2989 ret = -ENXIO;
2990 goto out;
2991 }
2992 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 2993 if (crtc->funcs->cursor_set2)
2994 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2995 req->width, req->height, req->hot_x, req->hot_y);
2996 else
2997 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2998 req->width, req->height);
f453ba04
DA		 2999 }
3000
3001 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3002 if (crtc->funcs->cursor_move) {
3003 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3004 } else {
f453ba04
DA		 3005 ret = -EFAULT;
3006 goto out;
3007 }
3008 }
3009out:
d059f652 3010 drm_modeset_unlock_crtc(crtc);
dac35663 3011
f453ba04 3012 return ret;
4c813d4d
DA		 3013
3014}
c8e32cc1
DV		 3015
3016
3017/**
3018 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3019 * @dev: drm device for the ioctl
3020 * @data: data pointer for the ioctl
3021 * @file_priv: drm file for the ioctl call
3022 *
3023 * Set the cursor configuration based on user request.
3024 *
3025 * Called by the user via ioctl.
3026 *
3027 * Returns:
1a498633 3028 * Zero on success, negative errno on failure.
c8e32cc1 3029 */
4c813d4d 3030int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 3031 void *data, struct drm_file *file_priv)
4c813d4d
DA		 3032{
3033 struct drm_mode_cursor *req = data;
3034 struct drm_mode_cursor2 new_req;
3035
3036 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3037 new_req.hot_x = new_req.hot_y = 0;
3038
3039 return drm_mode_cursor_common(dev, &new_req, file_priv);
3040}
3041
c8e32cc1
DV		 3042/**
3043 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3044 * @dev: drm device for the ioctl
3045 * @data: data pointer for the ioctl
3046 * @file_priv: drm file for the ioctl call
3047 *
3048 * Set the cursor configuration based on user request. This implements the 2nd
3049 * version of the cursor ioctl, which allows userspace to additionally specify
3050 * the hotspot of the pointer.
3051 *
3052 * Called by the user via ioctl.
3053 *
3054 * Returns:
1a498633 3055 * Zero on success, negative errno on failure.
c8e32cc1 3056 */
4c813d4d
DA		 3057int drm_mode_cursor2_ioctl(struct drm_device *dev,
3058 void *data, struct drm_file *file_priv)
3059{
3060 struct drm_mode_cursor2 *req = data;
4dfd909f 3061
4c813d4d 3062 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 3063}
3064
c8e32cc1
DV		 3065/**
3066 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3067 * @bpp: bits per pixels
3068 * @depth: bit depth per pixel
3069 *
3070 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3071 * Useful in fbdev emulation code, since that deals in those values.
3072 */
308e5bcb
JB		 3073uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3074{
3075 uint32_t fmt;
3076
3077 switch (bpp) {
3078 case 8:
d84f031b 3079 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 3080 break;
3081 case 16:
3082 if (depth == 15)
04b3924d 3083 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 3084 else
04b3924d 3085 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 3086 break;
3087 case 24:
04b3924d 3088 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 3089 break;
3090 case 32:
3091 if (depth == 24)
04b3924d 3092 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 3093 else if (depth == 30)
04b3924d 3094 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 3095 else
04b3924d 3096 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 3097 break;
3098 default:
04b3924d
VS		 3099 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3100 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 3101 break;
3102 }
3103
3104 return fmt;
3105}
3106EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3107
f453ba04
DA		 3108/**
3109 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 3110 * @dev: drm device for the ioctl
3111 * @data: data pointer for the ioctl
3112 * @file_priv: drm file for the ioctl call
f453ba04 3113 *
c8e32cc1 3114 * Add a new FB to the specified CRTC, given a user request. This is the
209f5527 3115 * original addfb ioctl which only supported RGB formats.
f453ba04
DA		 3116 *
3117 * Called by the user via ioctl.
3118 *
c8e32cc1 3119 * Returns:
1a498633 3120 * Zero on success, negative errno on failure.
f453ba04
DA		 3121 */
3122int drm_mode_addfb(struct drm_device *dev,
3123 void *data, struct drm_file *file_priv)
3124{
308e5bcb
JB		 3125 struct drm_mode_fb_cmd *or = data;
3126 struct drm_mode_fb_cmd2 r = {};
228f2cb3 3127 int ret;
308e5bcb 3128
228f2cb3 3129 /* convert to new format and call new ioctl */
308e5bcb
JB		 3130 r.fb_id = or->fb_id;
3131 r.width = or->width;
3132 r.height = or->height;
3133 r.pitches[0] = or->pitch;
3134 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3135 r.handles[0] = or->handle;
3136
228f2cb3
CE		 3137 ret = drm_mode_addfb2(dev, &r, file_priv);
3138 if (ret)
3139 return ret;
308e5bcb 3140
228f2cb3 3141 or->fb_id = r.fb_id;
4b096ac1 3142
baf698b0 3143 return 0;
308e5bcb
JB		 3144}
3145
cff91b62 3146static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 3147{
3148 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3149
3150 switch (format) {
3151 case DRM_FORMAT_C8:
3152 case DRM_FORMAT_RGB332:
3153 case DRM_FORMAT_BGR233:
3154 case DRM_FORMAT_XRGB4444:
3155 case DRM_FORMAT_XBGR4444:
3156 case DRM_FORMAT_RGBX4444:
3157 case DRM_FORMAT_BGRX4444:
3158 case DRM_FORMAT_ARGB4444:
3159 case DRM_FORMAT_ABGR4444:
3160 case DRM_FORMAT_RGBA4444:
3161 case DRM_FORMAT_BGRA4444:
3162 case DRM_FORMAT_XRGB1555:
3163 case DRM_FORMAT_XBGR1555:
3164 case DRM_FORMAT_RGBX5551:
3165 case DRM_FORMAT_BGRX5551:
3166 case DRM_FORMAT_ARGB1555:
3167 case DRM_FORMAT_ABGR1555:
3168 case DRM_FORMAT_RGBA5551:
3169 case DRM_FORMAT_BGRA5551:
3170 case DRM_FORMAT_RGB565:
3171 case DRM_FORMAT_BGR565:
3172 case DRM_FORMAT_RGB888:
3173 case DRM_FORMAT_BGR888:
3174 case DRM_FORMAT_XRGB8888:
3175 case DRM_FORMAT_XBGR8888:
3176 case DRM_FORMAT_RGBX8888:
3177 case DRM_FORMAT_BGRX8888:
3178 case DRM_FORMAT_ARGB8888:
3179 case DRM_FORMAT_ABGR8888:
3180 case DRM_FORMAT_RGBA8888:
3181 case DRM_FORMAT_BGRA8888:
3182 case DRM_FORMAT_XRGB2101010:
3183 case DRM_FORMAT_XBGR2101010:
3184 case DRM_FORMAT_RGBX1010102:
3185 case DRM_FORMAT_BGRX1010102:
3186 case DRM_FORMAT_ARGB2101010:
3187 case DRM_FORMAT_ABGR2101010:
3188 case DRM_FORMAT_RGBA1010102:
3189 case DRM_FORMAT_BGRA1010102:
3190 case DRM_FORMAT_YUYV:
3191 case DRM_FORMAT_YVYU:
3192 case DRM_FORMAT_UYVY:
3193 case DRM_FORMAT_VYUY:
3194 case DRM_FORMAT_AYUV:
3195 case DRM_FORMAT_NV12:
3196 case DRM_FORMAT_NV21:
3197 case DRM_FORMAT_NV16:
3198 case DRM_FORMAT_NV61:
ba623f6a
LP		 3199 case DRM_FORMAT_NV24:
3200 case DRM_FORMAT_NV42:
935b5977
VS		 3201 case DRM_FORMAT_YUV410:
3202 case DRM_FORMAT_YVU410:
3203 case DRM_FORMAT_YUV411:
3204 case DRM_FORMAT_YVU411:
3205 case DRM_FORMAT_YUV420:
3206 case DRM_FORMAT_YVU420:
3207 case DRM_FORMAT_YUV422:
3208 case DRM_FORMAT_YVU422:
3209 case DRM_FORMAT_YUV444:
3210 case DRM_FORMAT_YVU444:
3211 return 0;
3212 default:
23c453a4
VS		 3213 DRM_DEBUG_KMS("invalid pixel format %s\n",
3214 drm_get_format_name(r->pixel_format));
935b5977
VS		 3215 return -EINVAL;
3216 }
3217}
3218
cff91b62 3219static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 3220{
3221 int ret, hsub, vsub, num_planes, i;
3222
3223 ret = format_check(r);
3224 if (ret) {
6ba6d03e
VS		 3225 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3226 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 3227 return ret;
3228 }
3229
3230 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3231 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3232 num_planes = drm_format_num_planes(r->pixel_format);
3233
3234 if (r->width == 0 || r->width % hsub) {
209f5527 3235 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
d1b45d5f
VS		 3236 return -EINVAL;
3237 }
3238
3239 if (r->height == 0 || r->height % vsub) {
1aa1b11c 3240 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 3241 return -EINVAL;
3242 }
3243
3244 for (i = 0; i < num_planes; i++) {
3245 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 3246 unsigned int height = r->height / (i != 0 ? vsub : 1);
3247 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 3248
3249 if (!r->handles[i]) {
1aa1b11c 3250 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 3251 return -EINVAL;
3252 }
3253
b180b5d1
VS		 3254 if ((uint64_t) width * cpp > UINT_MAX)
3255 return -ERANGE;
3256
3257 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3258 return -ERANGE;
3259
3260 if (r->pitches[i] < width * cpp) {
1aa1b11c 3261 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 3262 return -EINVAL;
3263 }
3264 }
3265
3266 return 0;
3267}
3268
c394c2b0
MR		 3269static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3270 struct drm_mode_fb_cmd2 *r,
3271 struct drm_file *file_priv)
308e5bcb 3272{
f453ba04
DA		 3273 struct drm_mode_config *config = &dev->mode_config;
3274 struct drm_framebuffer *fb;
4a1b0714 3275 int ret;
f453ba04 3276
e3cc3520
VS		 3277 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3278 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
c394c2b0 3279 return ERR_PTR(-EINVAL);
e3cc3520
VS		 3280 }
3281
f453ba04 3282 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 3283 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 3284 r->width, config->min_width, config->max_width);
c394c2b0 3285 return ERR_PTR(-EINVAL);
f453ba04
DA		 3286 }
3287 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 3288 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 3289 r->height, config->min_height, config->max_height);
c394c2b0 3290 return ERR_PTR(-EINVAL);
f453ba04
DA		 3291 }
3292
d1b45d5f
VS		 3293 ret = framebuffer_check(r);
3294 if (ret)
c394c2b0 3295 return ERR_PTR(ret);
935b5977 3296
f453ba04 3297 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 3298 if (IS_ERR(fb)) {
1aa1b11c 3299 DRM_DEBUG_KMS("could not create framebuffer\n");
c394c2b0 3300 return fb;
f453ba04
DA		 3301 }
3302
4b096ac1 3303 mutex_lock(&file_priv->fbs_lock);
e0c8463a 3304 r->fb_id = fb->base.id;
f453ba04 3305 list_add(&fb->filp_head, &file_priv->fbs);
9440106b 3306 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
4b096ac1 3307 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3308
c394c2b0
MR		 3309 return fb;
3310}
4b096ac1 3311
c394c2b0
MR		 3312/**
3313 * drm_mode_addfb2 - add an FB to the graphics configuration
3314 * @dev: drm device for the ioctl
3315 * @data: data pointer for the ioctl
3316 * @file_priv: drm file for the ioctl call
3317 *
3318 * Add a new FB to the specified CRTC, given a user request with format. This is
3319 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3320 * and uses fourcc codes as pixel format specifiers.
3321 *
3322 * Called by the user via ioctl.
3323 *
3324 * Returns:
1a498633 3325 * Zero on success, negative errno on failure.
c394c2b0
MR		 3326 */
3327int drm_mode_addfb2(struct drm_device *dev,
3328 void *data, struct drm_file *file_priv)
3329{
3330 struct drm_framebuffer *fb;
3331
3332 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3333 return -EINVAL;
3334
3335 fb = add_framebuffer_internal(dev, data, file_priv);
3336 if (IS_ERR(fb))
3337 return PTR_ERR(fb);
3338
3339 return 0;
f453ba04
DA		 3340}
3341
3342/**
3343 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 3344 * @dev: drm device for the ioctl
3345 * @data: data pointer for the ioctl
3346 * @file_priv: drm file for the ioctl call
f453ba04 3347 *
f453ba04
DA		 3348 * Remove the FB specified by the user.
3349 *
3350 * Called by the user via ioctl.
3351 *
c8e32cc1 3352 * Returns:
1a498633 3353 * Zero on success, negative errno on failure.
f453ba04
DA		 3354 */
3355int drm_mode_rmfb(struct drm_device *dev,
3356 void *data, struct drm_file *file_priv)
3357{
f453ba04
DA		 3358 struct drm_framebuffer *fb = NULL;
3359 struct drm_framebuffer *fbl = NULL;
3360 uint32_t *id = data;
f453ba04
DA		 3361 int found = 0;
3362
fb3b06c8
DA		 3363 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3364 return -EINVAL;
3365
4b096ac1 3366 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 3367 mutex_lock(&dev->mode_config.fb_lock);
3368 fb = __drm_framebuffer_lookup(dev, *id);
3369 if (!fb)
3370 goto fail_lookup;
3371
f453ba04
DA		 3372 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3373 if (fb == fbl)
3374 found = 1;
2b677e8c
DV		 3375 if (!found)
3376 goto fail_lookup;
3377
3378 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3379 __drm_framebuffer_unregister(dev, fb);
f453ba04 3380
4b096ac1 3381 list_del_init(&fb->filp_head);
2b677e8c 3382 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 3383 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3384
4b096ac1 3385 drm_framebuffer_remove(fb);
4b096ac1 3386
2b677e8c
DV		 3387 return 0;
3388
3389fail_lookup:
3390 mutex_unlock(&dev->mode_config.fb_lock);
3391 mutex_unlock(&file_priv->fbs_lock);
3392
37c4e705 3393 return -ENOENT;
f453ba04
DA		 3394}
3395
3396/**
3397 * drm_mode_getfb - get FB info
065a50ed
DV		 3398 * @dev: drm device for the ioctl
3399 * @data: data pointer for the ioctl
3400 * @file_priv: drm file for the ioctl call
f453ba04 3401 *
f453ba04
DA		 3402 * Lookup the FB given its ID and return info about it.
3403 *
3404 * Called by the user via ioctl.
3405 *
c8e32cc1 3406 * Returns:
1a498633 3407 * Zero on success, negative errno on failure.
f453ba04
DA		 3408 */
3409int drm_mode_getfb(struct drm_device *dev,
3410 void *data, struct drm_file *file_priv)
3411{
3412 struct drm_mode_fb_cmd *r = data;
f453ba04 3413 struct drm_framebuffer *fb;
58c0dca1 3414 int ret;
f453ba04 3415
fb3b06c8
DA		 3416 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3417 return -EINVAL;
3418
786b99ed 3419 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 3420 if (!fb)
37c4e705 3421 return -ENOENT;
f453ba04
DA		 3422
3423 r->height = fb->height;
3424 r->width = fb->width;
3425 r->depth = fb->depth;
3426 r->bpp = fb->bits_per_pixel;
01f2c773 3427 r->pitch = fb->pitches[0];
101b96f3 3428 if (fb->funcs->create_handle) {
09f308f7 3429 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 3430 drm_is_control_client(file_priv)) {
101b96f3
DH		 3431 ret = fb->funcs->create_handle(fb, file_priv,
3432 &r->handle);
3433 } else {
3434 /* GET_FB() is an unprivileged ioctl so we must not
3435 * return a buffer-handle to non-master processes! For
3436 * backwards-compatibility reasons, we cannot make
3437 * GET_FB() privileged, so just return an invalid handle
3438 * for non-masters. */
3439 r->handle = 0;
3440 ret = 0;
3441 }
3442 } else {
af26ef3b 3443 ret = -ENODEV;
101b96f3 3444 }
f453ba04 3445
58c0dca1
DV		 3446 drm_framebuffer_unreference(fb);
3447
f453ba04
DA		 3448 return ret;
3449}
3450
c8e32cc1
DV		 3451/**
3452 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3453 * @dev: drm device for the ioctl
3454 * @data: data pointer for the ioctl
3455 * @file_priv: drm file for the ioctl call
3456 *
3457 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3458 * rectangle list. Generic userspace which does frontbuffer rendering must call
3459 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3460 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3461 *
3462 * Modesetting drivers which always update the frontbuffer do not need to
3463 * implement the corresponding ->dirty framebuffer callback.
3464 *
3465 * Called by the user via ioctl.
3466 *
3467 * Returns:
1a498633 3468 * Zero on success, negative errno on failure.
c8e32cc1 3469 */
884840aa
JB		 3470int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3471 void *data, struct drm_file *file_priv)
3472{
3473 struct drm_clip_rect __user *clips_ptr;
3474 struct drm_clip_rect *clips = NULL;
3475 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 3476 struct drm_framebuffer *fb;
3477 unsigned flags;
3478 int num_clips;
4a1b0714 3479 int ret;
884840aa 3480
fb3b06c8
DA		 3481 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3482 return -EINVAL;
3483
786b99ed 3484 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 3485 if (!fb)
37c4e705 3486 return -ENOENT;
884840aa
JB		 3487
3488 num_clips = r->num_clips;
81f6c7f8 3489 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 3490
3491 if (!num_clips != !clips_ptr) {
3492 ret = -EINVAL;
3493 goto out_err1;
3494 }
3495
3496 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3497
3498 /* If userspace annotates copy, clips must come in pairs */
3499 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3500 ret = -EINVAL;
3501 goto out_err1;
3502 }
3503
3504 if (num_clips && clips_ptr) {
a5cd3351
XW		 3505 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3506 ret = -EINVAL;
3507 goto out_err1;
3508 }
bd3f0ff9 3509 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
884840aa
JB		 3510 if (!clips) {
3511 ret = -ENOMEM;
3512 goto out_err1;
3513 }
3514
3515 ret = copy_from_user(clips, clips_ptr,
3516 num_clips * sizeof(*clips));
e902a358
DC		 3517 if (ret) {
3518 ret = -EFAULT;
884840aa 3519 goto out_err2;
e902a358 3520 }
884840aa
JB		 3521 }
3522
3523 if (fb->funcs->dirty) {
02b00162
TH		 3524 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3525 clips, num_clips);
884840aa
JB		 3526 } else {
3527 ret = -ENOSYS;
884840aa
JB		 3528 }
3529
3530out_err2:
3531 kfree(clips);
3532out_err1:
4ccf097f
DV		 3533 drm_framebuffer_unreference(fb);
3534
884840aa
JB		 3535 return ret;
3536}
3537
3538
f453ba04
DA		 3539/**
3540 * drm_fb_release - remove and free the FBs on this file
065a50ed 3541 * @priv: drm file for the ioctl
f453ba04 3542 *
f453ba04
DA		 3543 * Destroy all the FBs associated with @filp.
3544 *
3545 * Called by the user via ioctl.
3546 *
c8e32cc1 3547 * Returns:
1a498633 3548 * Zero on success, negative errno on failure.
f453ba04 3549 */
ea39f835 3550void drm_fb_release(struct drm_file *priv)
f453ba04 3551{
f453ba04
DA		 3552 struct drm_device *dev = priv->minor->dev;
3553 struct drm_framebuffer *fb, *tfb;
3554
1b116297
DV		 3555 /*
3556 * When the file gets released that means no one else can access the fb
e2db726b 3557 * list any more, so no need to grab fpriv->fbs_lock. And we need to
1b116297
DV		 3558 * avoid upsetting lockdep since the universal cursor code adds a
3559 * framebuffer while holding mutex locks.
3560 *
3561 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3562 * locks is impossible here since no one else but this function can get
3563 * at it any more.
3564 */
f453ba04 3565 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2b677e8c
DV		 3566
3567 mutex_lock(&dev->mode_config.fb_lock);
3568 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3569 __drm_framebuffer_unregister(dev, fb);
3570 mutex_unlock(&dev->mode_config.fb_lock);
3571
4b096ac1 3572 list_del_init(&fb->filp_head);
2b677e8c
DV		 3573
3574 /* This will also drop the fpriv->fbs reference. */
f7eff60e 3575 drm_framebuffer_remove(fb);
f453ba04 3576 }
f453ba04
DA		 3577}
3578
c8e32cc1
DV		 3579/**
3580 * drm_property_create - create a new property type
3581 * @dev: drm device
3582 * @flags: flags specifying the property type
3583 * @name: name of the property
3584 * @num_values: number of pre-defined values
3585 *
3586 * This creates a new generic drm property which can then be attached to a drm
3587 * object with drm_object_attach_property. The returned property object must be
3588 * freed with drm_property_destroy.
3589 *
3b5b9932
DL		 3590 * Note that the DRM core keeps a per-device list of properties and that, if
3591 * drm_mode_config_cleanup() is called, it will destroy all properties created
3592 * by the driver.
3593 *
c8e32cc1
DV		 3594 * Returns:
3595 * A pointer to the newly created property on success, NULL on failure.
3596 */
f453ba04
DA		 3597struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3598 const char *name, int num_values)
3599{
3600 struct drm_property *property = NULL;
6bfc56aa 3601 int ret;
f453ba04
DA		 3602
3603 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3604 if (!property)
3605 return NULL;
3606
98f75de4
RC		 3607 property->dev = dev;
3608
f453ba04 3609 if (num_values) {
bd3f0ff9
TR		 3610 property->values = kcalloc(num_values, sizeof(uint64_t),
3611 GFP_KERNEL);
f453ba04
DA		 3612 if (!property->values)
3613 goto fail;
3614 }
3615
6bfc56aa
VS		 3616 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3617 if (ret)
3618 goto fail;
3619
f453ba04
DA		 3620 property->flags = flags;
3621 property->num_values = num_values;
3758b341 3622 INIT_LIST_HEAD(&property->enum_list);
f453ba04 3623
471dd2ef 3624 if (name) {
f453ba04 3625 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3626 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3627 }
f453ba04
DA		 3628
3629 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3630
3631 WARN_ON(!drm_property_type_valid(property));
3632
f453ba04
DA		 3633 return property;
3634fail:
6bfc56aa 3635 kfree(property->values);
f453ba04
DA		 3636 kfree(property);
3637 return NULL;
3638}
3639EXPORT_SYMBOL(drm_property_create);
3640
c8e32cc1 3641/**
2aa9d2bc 3642 * drm_property_create_enum - create a new enumeration property type
c8e32cc1
DV		 3643 * @dev: drm device
3644 * @flags: flags specifying the property type
3645 * @name: name of the property
3646 * @props: enumeration lists with property values
3647 * @num_values: number of pre-defined values
3648 *
3649 * This creates a new generic drm property which can then be attached to a drm
3650 * object with drm_object_attach_property. The returned property object must be
3651 * freed with drm_property_destroy.
3652 *
3653 * Userspace is only allowed to set one of the predefined values for enumeration
3654 * properties.
3655 *
3656 * Returns:
3657 * A pointer to the newly created property on success, NULL on failure.
3658 */
4a67d391
SH		 3659struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3660 const char *name,
3661 const struct drm_prop_enum_list *props,
3662 int num_values)
3663{
3664 struct drm_property *property;
3665 int i, ret;
3666
3667 flags |= DRM_MODE_PROP_ENUM;
3668
3669 property = drm_property_create(dev, flags, name, num_values);
3670 if (!property)
3671 return NULL;
3672
3673 for (i = 0; i < num_values; i++) {
3674 ret = drm_property_add_enum(property, i,
3675 props[i].type,
3676 props[i].name);
3677 if (ret) {
3678 drm_property_destroy(dev, property);
3679 return NULL;
3680 }
3681 }
3682
3683 return property;
3684}
3685EXPORT_SYMBOL(drm_property_create_enum);
3686
c8e32cc1 3687/**
2aa9d2bc 3688 * drm_property_create_bitmask - create a new bitmask property type
c8e32cc1
DV		 3689 * @dev: drm device
3690 * @flags: flags specifying the property type
3691 * @name: name of the property
3692 * @props: enumeration lists with property bitflags
295ee853
DV		 3693 * @num_props: size of the @props array
3694 * @supported_bits: bitmask of all supported enumeration values
c8e32cc1 3695 *
295ee853 3696 * This creates a new bitmask drm property which can then be attached to a drm
c8e32cc1
DV		 3697 * object with drm_object_attach_property. The returned property object must be
3698 * freed with drm_property_destroy.
3699 *
3700 * Compared to plain enumeration properties userspace is allowed to set any
3701 * or'ed together combination of the predefined property bitflag values
3702 *
3703 * Returns:
3704 * A pointer to the newly created property on success, NULL on failure.
3705 */
49e27545
RC		 3706struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3707 int flags, const char *name,
3708 const struct drm_prop_enum_list *props,
7689ffb3
VS		 3709 int num_props,
3710 uint64_t supported_bits)
49e27545
RC		 3711{
3712 struct drm_property *property;
7689ffb3
VS		 3713 int i, ret, index = 0;
3714 int num_values = hweight64(supported_bits);
49e27545
RC		 3715
3716 flags |= DRM_MODE_PROP_BITMASK;
3717
3718 property = drm_property_create(dev, flags, name, num_values);
3719 if (!property)
3720 return NULL;
7689ffb3
VS		 3721 for (i = 0; i < num_props; i++) {
3722 if (!(supported_bits & (1ULL << props[i].type)))
3723 continue;
49e27545 3724
7689ffb3
VS		 3725 if (WARN_ON(index >= num_values)) {
3726 drm_property_destroy(dev, property);
3727 return NULL;
3728 }
3729
3730 ret = drm_property_add_enum(property, index++,
49e27545
RC		 3731 props[i].type,
3732 props[i].name);
3733 if (ret) {
3734 drm_property_destroy(dev, property);
3735 return NULL;
3736 }
3737 }
3738
3739 return property;
3740}
3741EXPORT_SYMBOL(drm_property_create_bitmask);
3742
ebc44cf3
RC		 3743static struct drm_property *property_create_range(struct drm_device *dev,
3744 int flags, const char *name,
3745 uint64_t min, uint64_t max)
3746{
3747 struct drm_property *property;
3748
3749 property = drm_property_create(dev, flags, name, 2);
3750 if (!property)
3751 return NULL;
3752
3753 property->values[0] = min;
3754 property->values[1] = max;
3755
3756 return property;
3757}
3758
c8e32cc1 3759/**
960cd9d4 3760 * drm_property_create_range - create a new unsigned ranged property type
c8e32cc1
DV		 3761 * @dev: drm device
3762 * @flags: flags specifying the property type
3763 * @name: name of the property
3764 * @min: minimum value of the property
3765 * @max: maximum value of the property
3766 *
3767 * This creates a new generic drm property which can then be attached to a drm
3768 * object with drm_object_attach_property. The returned property object must be
3769 * freed with drm_property_destroy.
3770 *
960cd9d4
DV		 3771 * Userspace is allowed to set any unsigned integer value in the (min, max)
3772 * range inclusive.
c8e32cc1
DV		 3773 *
3774 * Returns:
3775 * A pointer to the newly created property on success, NULL on failure.
3776 */
d9bc3c02
SH		 3777struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3778 const char *name,
3779 uint64_t min, uint64_t max)
3780{
ebc44cf3
RC		 3781 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3782 name, min, max);
d9bc3c02
SH		 3783}
3784EXPORT_SYMBOL(drm_property_create_range);
3785
960cd9d4
DV		 3786/**
3787 * drm_property_create_signed_range - create a new signed ranged property type
3788 * @dev: drm device
3789 * @flags: flags specifying the property type
3790 * @name: name of the property
3791 * @min: minimum value of the property
3792 * @max: maximum value of the property
3793 *
3794 * This creates a new generic drm property which can then be attached to a drm
3795 * object with drm_object_attach_property. The returned property object must be
3796 * freed with drm_property_destroy.
3797 *
3798 * Userspace is allowed to set any signed integer value in the (min, max)
3799 * range inclusive.
3800 *
3801 * Returns:
3802 * A pointer to the newly created property on success, NULL on failure.
3803 */
ebc44cf3
RC		 3804struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3805 int flags, const char *name,
3806 int64_t min, int64_t max)
3807{
3808 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3809 name, I642U64(min), I642U64(max));
3810}
3811EXPORT_SYMBOL(drm_property_create_signed_range);
3812
960cd9d4
DV		 3813/**
3814 * drm_property_create_object - create a new object property type
3815 * @dev: drm device
3816 * @flags: flags specifying the property type
3817 * @name: name of the property
3818 * @type: object type from DRM_MODE_OBJECT_* defines
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 *
3824 * Userspace is only allowed to set this to any property value of the given
3825 * @type. Only useful for atomic properties, which is enforced.
3826 *
3827 * Returns:
3828 * A pointer to the newly created property on success, NULL on failure.
3829 */
98f75de4
RC		 3830struct drm_property *drm_property_create_object(struct drm_device *dev,
3831 int flags, const char *name, uint32_t type)
3832{
3833 struct drm_property *property;
3834
3835 flags |= DRM_MODE_PROP_OBJECT;
3836
960cd9d4
DV		 3837 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3838 return NULL;
3839
98f75de4
RC		 3840 property = drm_property_create(dev, flags, name, 1);
3841 if (!property)
3842 return NULL;
3843
3844 property->values[0] = type;
3845
3846 return property;
3847}
3848EXPORT_SYMBOL(drm_property_create_object);
3849
960cd9d4
DV		 3850/**
3851 * drm_property_create_bool - create a new boolean property type
3852 * @dev: drm device
3853 * @flags: flags specifying the property type
3854 * @name: name of the property
3855 *
3856 * This creates a new generic drm property which can then be attached to a drm
3857 * object with drm_object_attach_property. The returned property object must be
3858 * freed with drm_property_destroy.
3859 *
3860 * This is implemented as a ranged property with only {0, 1} as valid values.
3861 *
3862 * Returns:
3863 * A pointer to the newly created property on success, NULL on failure.
3864 */
3865struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3866 const char *name)
3867{
3868 return drm_property_create_range(dev, flags, name, 0, 1);
3869}
3870EXPORT_SYMBOL(drm_property_create_bool);
3871
c8e32cc1
DV		 3872/**
3873 * drm_property_add_enum - add a possible value to an enumeration property
3874 * @property: enumeration property to change
3875 * @index: index of the new enumeration
3876 * @value: value of the new enumeration
3877 * @name: symbolic name of the new enumeration
3878 *
3879 * This functions adds enumerations to a property.
3880 *
3881 * It's use is deprecated, drivers should use one of the more specific helpers
3882 * to directly create the property with all enumerations already attached.
3883 *
3884 * Returns:
3885 * Zero on success, error code on failure.
3886 */
f453ba04
DA		 3887int drm_property_add_enum(struct drm_property *property, int index,
3888 uint64_t value, const char *name)
3889{
3890 struct drm_property_enum *prop_enum;
3891
5ea22f24
RC		 3892 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3893 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 3894 return -EINVAL;
3895
3896 /*
3897 * Bitmask enum properties have the additional constraint of values
3898 * from 0 to 63
3899 */
5ea22f24
RC		 3900 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3901 (value > 63))
f453ba04
DA		 3902 return -EINVAL;
3903
3758b341
DV		 3904 if (!list_empty(&property->enum_list)) {
3905 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 3906 if (prop_enum->value == value) {
3907 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3908 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3909 return 0;
3910 }
3911 }
3912 }
3913
3914 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3915 if (!prop_enum)
3916 return -ENOMEM;
3917
3918 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3919 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3920 prop_enum->value = value;
3921
3922 property->values[index] = value;
3758b341 3923 list_add_tail(&prop_enum->head, &property->enum_list);
f453ba04
DA		 3924 return 0;
3925}
3926EXPORT_SYMBOL(drm_property_add_enum);
3927
c8e32cc1
DV		 3928/**
3929 * drm_property_destroy - destroy a drm property
3930 * @dev: drm device
3931 * @property: property to destry
3932 *
3933 * This function frees a property including any attached resources like
3934 * enumeration values.
3935 */
f453ba04
DA		 3936void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3937{
3938 struct drm_property_enum *prop_enum, *pt;
3939
3758b341 3940 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
f453ba04
DA		 3941 list_del(&prop_enum->head);
3942 kfree(prop_enum);
3943 }
3944
3945 if (property->num_values)
3946 kfree(property->values);
3947 drm_mode_object_put(dev, &property->base);
3948 list_del(&property->head);
3949 kfree(property);
3950}
3951EXPORT_SYMBOL(drm_property_destroy);
3952
c8e32cc1
DV		 3953/**
3954 * drm_object_attach_property - attach a property to a modeset object
3955 * @obj: drm modeset object
3956 * @property: property to attach
3957 * @init_val: initial value of the property
3958 *
3959 * This attaches the given property to the modeset object with the given initial
3960 * value. Currently this function cannot fail since the properties are stored in
3961 * a statically sized array.
3962 */
c543188a
PZ		 3963void drm_object_attach_property(struct drm_mode_object *obj,
3964 struct drm_property *property,
3965 uint64_t init_val)
3966{
7f88a9be 3967 int count = obj->properties->count;
c543188a 3968
7f88a9be
PZ		 3969 if (count == DRM_OBJECT_MAX_PROPERTY) {
3970 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3971 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3972 "you see this message on the same object type.\n",
3973 obj->type);
3974 return;
c543188a
PZ		 3975 }
3976
b17cd757 3977 obj->properties->properties[count] = property;
7f88a9be
PZ		 3978 obj->properties->values[count] = init_val;
3979 obj->properties->count++;
88a48e29
RC		 3980 if (property->flags & DRM_MODE_PROP_ATOMIC)
3981 obj->properties->atomic_count++;
c543188a
PZ		 3982}
3983EXPORT_SYMBOL(drm_object_attach_property);
3984
c8e32cc1
DV		 3985/**
3986 * drm_object_property_set_value - set the value of a property
3987 * @obj: drm mode object to set property value for
3988 * @property: property to set
3989 * @val: value the property should be set to
3990 *
3991 * This functions sets a given property on a given object. This function only
3992 * changes the software state of the property, it does not call into the
3993 * driver's ->set_property callback.
3994 *
3995 * Returns:
3996 * Zero on success, error code on failure.
3997 */
c543188a
PZ		 3998int drm_object_property_set_value(struct drm_mode_object *obj,
3999 struct drm_property *property, uint64_t val)
4000{
4001 int i;
4002
7f88a9be 4003 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4004 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4005 obj->properties->values[i] = val;
4006 return 0;
4007 }
4008 }
4009
4010 return -EINVAL;
4011}
4012EXPORT_SYMBOL(drm_object_property_set_value);
4013
c8e32cc1
DV		 4014/**
4015 * drm_object_property_get_value - retrieve the value of a property
4016 * @obj: drm mode object to get property value from
4017 * @property: property to retrieve
4018 * @val: storage for the property value
4019 *
4020 * This function retrieves the softare state of the given property for the given
4021 * property. Since there is no driver callback to retrieve the current property
4022 * value this might be out of sync with the hardware, depending upon the driver
4023 * and property.
4024 *
4025 * Returns:
4026 * Zero on success, error code on failure.
4027 */
c543188a
PZ		 4028int drm_object_property_get_value(struct drm_mode_object *obj,
4029 struct drm_property *property, uint64_t *val)
4030{
4031 int i;
4032
88a48e29
RC		 4033 /* read-only properties bypass atomic mechanism and still store
4034 * their value in obj->properties->values[].. mostly to avoid
4035 * having to deal w/ EDID and similar props in atomic paths:
4036 */
4037 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4038 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4039 return drm_atomic_get_property(obj, property, val);
4040
7f88a9be 4041 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4042 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4043 *val = obj->properties->values[i];
4044 return 0;
4045 }
4046 }
4047
4048 return -EINVAL;
4049}
4050EXPORT_SYMBOL(drm_object_property_get_value);
4051
c8e32cc1 4052/**
1a498633 4053 * drm_mode_getproperty_ioctl - get the property metadata
c8e32cc1
DV		 4054 * @dev: DRM device
4055 * @data: ioctl data
4056 * @file_priv: DRM file info
4057 *
1a498633
DV		 4058 * This function retrieves the metadata for a given property, like the different
4059 * possible values for an enum property or the limits for a range property.
4060 *
4061 * Blob properties are special
c8e32cc1
DV		 4062 *
4063 * Called by the user via ioctl.
4064 *
4065 * Returns:
1a498633 4066 * Zero on success, negative errno on failure.
c8e32cc1 4067 */
f453ba04
DA		 4068int drm_mode_getproperty_ioctl(struct drm_device *dev,
4069 void *data, struct drm_file *file_priv)
4070{
f453ba04
DA		 4071 struct drm_mode_get_property *out_resp = data;
4072 struct drm_property *property;
4073 int enum_count = 0;
f453ba04
DA		 4074 int value_count = 0;
4075 int ret = 0, i;
4076 int copied;
4077 struct drm_property_enum *prop_enum;
4078 struct drm_mode_property_enum __user *enum_ptr;
f453ba04 4079 uint64_t __user *values_ptr;
f453ba04 4080
fb3b06c8
DA		 4081 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4082 return -EINVAL;
4083
84849903 4084 drm_modeset_lock_all(dev);
a2b34e22
RC		 4085 property = drm_property_find(dev, out_resp->prop_id);
4086 if (!property) {
f27657f2 4087 ret = -ENOENT;
f453ba04
DA		 4088 goto done;
4089 }
f453ba04 4090
5ea22f24
RC		 4091 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4092 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3758b341 4093 list_for_each_entry(prop_enum, &property->enum_list, head)
f453ba04 4094 enum_count++;
f453ba04
DA		 4095 }
4096
4097 value_count = property->num_values;
4098
4099 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4100 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4101 out_resp->flags = property->flags;
4102
4103 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 4104 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 4105 for (i = 0; i < value_count; i++) {
4106 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4107 ret = -EFAULT;
4108 goto done;
4109 }
4110 }
4111 }
4112 out_resp->count_values = value_count;
4113
5ea22f24
RC		 4114 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4115 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 4116 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4117 copied = 0;
81f6c7f8 4118 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3758b341 4119 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 4120
4121 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4122 ret = -EFAULT;
4123 goto done;
4124 }
4125
4126 if (copy_to_user(&enum_ptr[copied].name,
4127 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4128 ret = -EFAULT;
4129 goto done;
4130 }
4131 copied++;
4132 }
4133 }
4134 out_resp->count_enum_blobs = enum_count;
4135 }
4136
3758b341
DV		 4137 /*
4138 * NOTE: The idea seems to have been to use this to read all the blob
4139 * property values. But nothing ever added them to the corresponding
4140 * list, userspace always used the special-purpose get_blob ioctl to
4141 * read the value for a blob property. It also doesn't make a lot of
4142 * sense to return values here when everything else is just metadata for
4143 * the property itself.
4144 */
4145 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4146 out_resp->count_enum_blobs = 0;
f453ba04 4147done:
84849903 4148 drm_modeset_unlock_all(dev);
f453ba04
DA		 4149 return ret;
4150}
4151
ecbbe59b
TR		 4152static struct drm_property_blob *
4153drm_property_create_blob(struct drm_device *dev, size_t length,
12e6cecd 4154 const void *data)
f453ba04
DA		 4155{
4156 struct drm_property_blob *blob;
6bfc56aa 4157 int ret;
f453ba04
DA		 4158
4159 if (!length || !data)
4160 return NULL;
4161
4162 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4163 if (!blob)
4164 return NULL;
4165
6bfc56aa
VS		 4166 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4167 if (ret) {
4168 kfree(blob);
4169 return NULL;
4170 }
4171
f453ba04
DA		 4172 blob->length = length;
4173
4174 memcpy(blob->data, data, length);
4175
f453ba04
DA		 4176 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4177 return blob;
4178}
4179
4180static void drm_property_destroy_blob(struct drm_device *dev,
4181 struct drm_property_blob *blob)
4182{
4183 drm_mode_object_put(dev, &blob->base);
4184 list_del(&blob->head);
4185 kfree(blob);
4186}
4187
c8e32cc1
DV		 4188/**
4189 * drm_mode_getblob_ioctl - get the contents of a blob property value
4190 * @dev: DRM device
4191 * @data: ioctl data
4192 * @file_priv: DRM file info
4193 *
4194 * This function retrieves the contents of a blob property. The value stored in
4195 * an object's blob property is just a normal modeset object id.
4196 *
4197 * Called by the user via ioctl.
4198 *
4199 * Returns:
1a498633 4200 * Zero on success, negative errno on failure.
c8e32cc1 4201 */
f453ba04
DA		 4202int drm_mode_getblob_ioctl(struct drm_device *dev,
4203 void *data, struct drm_file *file_priv)
4204{
f453ba04
DA		 4205 struct drm_mode_get_blob *out_resp = data;
4206 struct drm_property_blob *blob;
4207 int ret = 0;
81f6c7f8 4208 void __user *blob_ptr;
f453ba04 4209
fb3b06c8
DA		 4210 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4211 return -EINVAL;
4212
84849903 4213 drm_modeset_lock_all(dev);
a2b34e22
RC		 4214 blob = drm_property_blob_find(dev, out_resp->blob_id);
4215 if (!blob) {
f27657f2 4216 ret = -ENOENT;
f453ba04
DA		 4217 goto done;
4218 }
f453ba04
DA		 4219
4220 if (out_resp->length == blob->length) {
81f6c7f8 4221 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4dfd909f 4222 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
f453ba04
DA		 4223 ret = -EFAULT;
4224 goto done;
4225 }
4226 }
4227 out_resp->length = blob->length;
4228
4229done:
84849903 4230 drm_modeset_unlock_all(dev);
f453ba04
DA		 4231 return ret;
4232}
4233
cc7096fb
DA		 4234/**
4235 * drm_mode_connector_set_path_property - set tile property on connector
4236 * @connector: connector to set property on.
4237 * @path: path to use for property.
4238 *
4239 * This creates a property to expose to userspace to specify a
4240 * connector path. This is mainly used for DisplayPort MST where
4241 * connectors have a topology and we want to allow userspace to give
4242 * them more meaningful names.
4243 *
4244 * Returns:
1a498633 4245 * Zero on success, negative errno on failure.
cc7096fb 4246 */
43aba7eb 4247int drm_mode_connector_set_path_property(struct drm_connector *connector,
12e6cecd 4248 const char *path)
43aba7eb
DA		 4249{
4250 struct drm_device *dev = connector->dev;
ecbbe59b
TR		 4251 size_t size = strlen(path) + 1;
4252 int ret;
43aba7eb
DA		 4253
4254 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4255 size, path);
4256 if (!connector->path_blob_ptr)
4257 return -EINVAL;
4258
4259 ret = drm_object_property_set_value(&connector->base,
4260 dev->mode_config.path_property,
4261 connector->path_blob_ptr->base.id);
4262 return ret;
4263}
4264EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4265
6f134d7b
DA		 4266/**
4267 * drm_mode_connector_set_tile_property - set tile property on connector
4268 * @connector: connector to set property on.
4269 *
4270 * This looks up the tile information for a connector, and creates a
4271 * property for userspace to parse if it exists. The property is of
4272 * the form of 8 integers using ':' as a separator.
4273 *
4274 * Returns:
4275 * Zero on success, errno on failure.
4276 */
4277int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4278{
4279 struct drm_device *dev = connector->dev;
4280 int ret, size;
4281 char tile[256];
4282
4283 if (connector->tile_blob_ptr)
4284 drm_property_destroy_blob(dev, connector->tile_blob_ptr);
4285
4286 if (!connector->has_tile) {
4287 connector->tile_blob_ptr = NULL;
4288 ret = drm_object_property_set_value(&connector->base,
4289 dev->mode_config.tile_property, 0);
4290 return ret;
4291 }
4292
4293 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4294 connector->tile_group->id, connector->tile_is_single_monitor,
4295 connector->num_h_tile, connector->num_v_tile,
4296 connector->tile_h_loc, connector->tile_v_loc,
4297 connector->tile_h_size, connector->tile_v_size);
4298 size = strlen(tile) + 1;
4299
4300 connector->tile_blob_ptr = drm_property_create_blob(connector->dev,
4301 size, tile);
4302 if (!connector->tile_blob_ptr)
4303 return -EINVAL;
4304
4305 ret = drm_object_property_set_value(&connector->base,
4306 dev->mode_config.tile_property,
4307 connector->tile_blob_ptr->base.id);
4308 return ret;
4309}
4310EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4311
c8e32cc1
DV		 4312/**
4313 * drm_mode_connector_update_edid_property - update the edid property of a connector
4314 * @connector: drm connector
4315 * @edid: new value of the edid property
4316 *
4317 * This function creates a new blob modeset object and assigns its id to the
4318 * connector's edid property.
4319 *
4320 * Returns:
1a498633 4321 * Zero on success, negative errno on failure.
c8e32cc1 4322 */
f453ba04 4323int drm_mode_connector_update_edid_property(struct drm_connector *connector,
12e6cecd 4324 const struct edid *edid)
f453ba04
DA		 4325{
4326 struct drm_device *dev = connector->dev;
ecbbe59b
TR		 4327 size_t size;
4328 int ret;
f453ba04 4329
4cf2b281
TW		 4330 /* ignore requests to set edid when overridden */
4331 if (connector->override_edid)
4332 return 0;
4333
f453ba04
DA		 4334 if (connector->edid_blob_ptr)
4335 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4336
4337 /* Delete edid, when there is none. */
4338 if (!edid) {
4339 connector->edid_blob_ptr = NULL;
58495563 4340 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
f453ba04
DA		 4341 return ret;
4342 }
4343
7466f4cc
AJ		 4344 size = EDID_LENGTH * (1 + edid->extensions);
4345 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4346 size, edid);
e655d122
SK		 4347 if (!connector->edid_blob_ptr)
4348 return -EINVAL;
f453ba04 4349
58495563 4350 ret = drm_object_property_set_value(&connector->base,
f453ba04
DA		 4351 dev->mode_config.edid_property,
4352 connector->edid_blob_ptr->base.id);
4353
4354 return ret;
4355}
4356EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4357
3843e71f
RC		 4358/* Some properties could refer to dynamic refcnt'd objects, or things that
4359 * need special locking to handle lifetime issues (ie. to ensure the prop
4360 * value doesn't become invalid part way through the property update due to
4361 * race). The value returned by reference via 'obj' should be passed back
4362 * to drm_property_change_valid_put() after the property is set (and the
4363 * object to which the property is attached has a chance to take it's own
4364 * reference).
4365 */
d34f20d6 4366bool drm_property_change_valid_get(struct drm_property *property,
3843e71f 4367 uint64_t value, struct drm_mode_object **ref)
26a34815 4368{
2ca651d1
TR		 4369 int i;
4370
26a34815
PZ		 4371 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4372 return false;
5ea22f24 4373
3843e71f
RC		 4374 *ref = NULL;
4375
5ea22f24 4376 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 4377 if (value < property->values[0] || value > property->values[1])
4378 return false;
4379 return true;
ebc44cf3
RC		 4380 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4381 int64_t svalue = U642I64(value);
4dfd909f 4382
ebc44cf3
RC		 4383 if (svalue < U642I64(property->values[0]) ||
4384 svalue > U642I64(property->values[1]))
4385 return false;
4386 return true;
5ea22f24 4387 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
592c20ee 4388 uint64_t valid_mask = 0;
4dfd909f 4389
49e27545
RC		 4390 for (i = 0; i < property->num_values; i++)
4391 valid_mask |= (1ULL << property->values[i]);
4392 return !(value & ~valid_mask);
5ea22f24 4393 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
c4a56750
VS		 4394 /* Only the driver knows */
4395 return true;
98f75de4 4396 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
98f75de4
RC		 4397 /* a zero value for an object property translates to null: */
4398 if (value == 0)
4399 return true;
3843e71f
RC		 4400
4401 /* handle refcnt'd objects specially: */
4402 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4403 struct drm_framebuffer *fb;
4404 fb = drm_framebuffer_lookup(property->dev, value);
4405 if (fb) {
4406 *ref = &fb->base;
4407 return true;
4408 } else {
4409 return false;
4410 }
4411 } else {
4412 return _object_find(property->dev, value, property->values[0]) != NULL;
4413 }
26a34815 4414 }
2ca651d1
TR		 4415
4416 for (i = 0; i < property->num_values; i++)
4417 if (property->values[i] == value)
4418 return true;
4419 return false;
26a34815
PZ		 4420}
4421
d34f20d6 4422void drm_property_change_valid_put(struct drm_property *property,
3843e71f
RC		 4423 struct drm_mode_object *ref)
4424{
4425 if (!ref)
4426 return;
4427
4428 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4429 if (property->values[0] == DRM_MODE_OBJECT_FB)
4430 drm_framebuffer_unreference(obj_to_fb(ref));
4431 }
4432}
4433
c8e32cc1
DV		 4434/**
4435 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4436 * @dev: DRM device
4437 * @data: ioctl data
4438 * @file_priv: DRM file info
4439 *
4440 * This function sets the current value for a connectors's property. It also
4441 * calls into a driver's ->set_property callback to update the hardware state
4442 *
4443 * Called by the user via ioctl.
4444 *
4445 * Returns:
1a498633 4446 * Zero on success, negative errno on failure.
c8e32cc1 4447 */
f453ba04
DA		 4448int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4449 void *data, struct drm_file *file_priv)
4450{
0057d8dd
PZ		 4451 struct drm_mode_connector_set_property *conn_set_prop = data;
4452 struct drm_mode_obj_set_property obj_set_prop = {
4453 .value = conn_set_prop->value,
4454 .prop_id = conn_set_prop->prop_id,
4455 .obj_id = conn_set_prop->connector_id,
4456 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4457 };
fb3b06c8 4458
0057d8dd
PZ		 4459 /* It does all the locking and checking we need */
4460 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 4461}
4462
c543188a
PZ		 4463static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4464 struct drm_property *property,
4465 uint64_t value)
4466{
4467 int ret = -EINVAL;
4468 struct drm_connector *connector = obj_to_connector(obj);
4469
4470 /* Do DPMS ourselves */
4471 if (property == connector->dev->mode_config.dpms_property) {
4472 if (connector->funcs->dpms)
4473 (*connector->funcs->dpms)(connector, (int)value);
4474 ret = 0;
4475 } else if (connector->funcs->set_property)
4476 ret = connector->funcs->set_property(connector, property, value);
4477
4478 /* store the property value if successful */
4479 if (!ret)
58495563 4480 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 4481 return ret;
4482}
4483
bffd9de0
PZ		 4484static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4485 struct drm_property *property,
4486 uint64_t value)
4487{
4488 int ret = -EINVAL;
4489 struct drm_crtc *crtc = obj_to_crtc(obj);
4490
4491 if (crtc->funcs->set_property)
4492 ret = crtc->funcs->set_property(crtc, property, value);
4493 if (!ret)
4494 drm_object_property_set_value(obj, property, value);
4495
4496 return ret;
4497}
4498
3a5f87c2
TW		 4499/**
4500 * drm_mode_plane_set_obj_prop - set the value of a property
4501 * @plane: drm plane object to set property value for
4502 * @property: property to set
4503 * @value: value the property should be set to
4504 *
4505 * This functions sets a given property on a given plane object. This function
4506 * calls the driver's ->set_property callback and changes the software state of
4507 * the property if the callback succeeds.
4508 *
4509 * Returns:
4510 * Zero on success, error code on failure.
4511 */
4512int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4513 struct drm_property *property,
4514 uint64_t value)
4d93914a
RC		 4515{
4516 int ret = -EINVAL;
3a5f87c2 4517 struct drm_mode_object *obj = &plane->base;
4d93914a
RC		 4518
4519 if (plane->funcs->set_property)
4520 ret = plane->funcs->set_property(plane, property, value);
4521 if (!ret)
4522 drm_object_property_set_value(obj, property, value);
4523
4524 return ret;
4525}
3a5f87c2 4526EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4d93914a 4527
c8e32cc1 4528/**
1a498633 4529 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
c8e32cc1
DV		 4530 * @dev: DRM device
4531 * @data: ioctl data
4532 * @file_priv: DRM file info
4533 *
4534 * This function retrieves the current value for an object's property. Compared
4535 * to the connector specific ioctl this one is extended to also work on crtc and
4536 * plane objects.
4537 *
4538 * Called by the user via ioctl.
4539 *
4540 * Returns:
1a498633 4541 * Zero on success, negative errno on failure.
c8e32cc1 4542 */
c543188a
PZ		 4543int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4544 struct drm_file *file_priv)
4545{
4546 struct drm_mode_obj_get_properties *arg = data;
4547 struct drm_mode_object *obj;
4548 int ret = 0;
c543188a
PZ		 4549
4550 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4551 return -EINVAL;
4552
84849903 4553 drm_modeset_lock_all(dev);
c543188a
PZ		 4554
4555 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4556 if (!obj) {
f27657f2 4557 ret = -ENOENT;
c543188a
PZ		 4558 goto out;
4559 }
4560 if (!obj->properties) {
4561 ret = -EINVAL;
4562 goto out;
4563 }
4564
88a48e29 4565 ret = get_properties(obj, file_priv->atomic,
95cbf110
RC		 4566 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4567 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4568 &arg->count_props);
c543188a 4569
c543188a 4570out:
84849903 4571 drm_modeset_unlock_all(dev);
c543188a
PZ		 4572 return ret;
4573}
4574
c8e32cc1
DV		 4575/**
4576 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4577 * @dev: DRM device
4578 * @data: ioctl data
4579 * @file_priv: DRM file info
4580 *
4581 * This function sets the current value for an object's property. It also calls
4582 * into a driver's ->set_property callback to update the hardware state.
4583 * Compared to the connector specific ioctl this one is extended to also work on
4584 * crtc and plane objects.
4585 *
4586 * Called by the user via ioctl.
4587 *
4588 * Returns:
1a498633 4589 * Zero on success, negative errno on failure.
c8e32cc1 4590 */
c543188a
PZ		 4591int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4592 struct drm_file *file_priv)
4593{
4594 struct drm_mode_obj_set_property *arg = data;
4595 struct drm_mode_object *arg_obj;
4596 struct drm_mode_object *prop_obj;
4597 struct drm_property *property;
3843e71f
RC		 4598 int i, ret = -EINVAL;
4599 struct drm_mode_object *ref;
c543188a
PZ		 4600
4601 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4602 return -EINVAL;
4603
84849903 4604 drm_modeset_lock_all(dev);
c543188a
PZ		 4605
4606 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 4607 if (!arg_obj) {
4608 ret = -ENOENT;
c543188a 4609 goto out;
f27657f2 4610 }
c543188a
PZ		 4611 if (!arg_obj->properties)
4612 goto out;
4613
7f88a9be 4614 for (i = 0; i < arg_obj->properties->count; i++)
b17cd757 4615 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
c543188a
PZ		 4616 break;
4617
7f88a9be 4618 if (i == arg_obj->properties->count)
c543188a
PZ		 4619 goto out;
4620
4621 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4622 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 4623 if (!prop_obj) {
4624 ret = -ENOENT;
c543188a 4625 goto out;
f27657f2 4626 }
c543188a
PZ		 4627 property = obj_to_property(prop_obj);
4628
3843e71f 4629 if (!drm_property_change_valid_get(property, arg->value, &ref))
c543188a
PZ		 4630 goto out;
4631
4632 switch (arg_obj->type) {
4633 case DRM_MODE_OBJECT_CONNECTOR:
4634 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4635 arg->value);
4636 break;
bffd9de0
PZ		 4637 case DRM_MODE_OBJECT_CRTC:
4638 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4639 break;
4d93914a 4640 case DRM_MODE_OBJECT_PLANE:
3a5f87c2
TW		 4641 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4642 property, arg->value);
4d93914a 4643 break;
c543188a
PZ		 4644 }
4645
3843e71f
RC		 4646 drm_property_change_valid_put(property, ref);
4647
c543188a 4648out:
84849903 4649 drm_modeset_unlock_all(dev);
c543188a
PZ		 4650 return ret;
4651}
4652
c8e32cc1
DV		 4653/**
4654 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4655 * @connector: connector to attach
4656 * @encoder: encoder to attach @connector to
4657 *
4658 * This function links up a connector to an encoder. Note that the routing
4659 * restrictions between encoders and crtcs are exposed to userspace through the
4660 * possible_clones and possible_crtcs bitmasks.
4661 *
4662 * Returns:
1a498633 4663 * Zero on success, negative errno on failure.
c8e32cc1 4664 */
f453ba04
DA		 4665int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4666 struct drm_encoder *encoder)
4667{
4668 int i;
4669
4670 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4671 if (connector->encoder_ids[i] == 0) {
4672 connector->encoder_ids[i] = encoder->base.id;
4673 return 0;
4674 }
4675 }
4676 return -ENOMEM;
4677}
4678EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4679
c8e32cc1
DV		 4680/**
4681 * drm_mode_crtc_set_gamma_size - set the gamma table size
4682 * @crtc: CRTC to set the gamma table size for
4683 * @gamma_size: size of the gamma table
4684 *
4685 * Drivers which support gamma tables should set this to the supported gamma
4686 * table size when initializing the CRTC. Currently the drm core only supports a
4687 * fixed gamma table size.
4688 *
4689 * Returns:
1a498633 4690 * Zero on success, negative errno on failure.
c8e32cc1 4691 */
4cae5b84 4692int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 4693 int gamma_size)
f453ba04
DA		 4694{
4695 crtc->gamma_size = gamma_size;
4696
bd3f0ff9
TR		 4697 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
4698 GFP_KERNEL);
f453ba04
DA		 4699 if (!crtc->gamma_store) {
4700 crtc->gamma_size = 0;
4cae5b84 4701 return -ENOMEM;
f453ba04
DA		 4702 }
4703
4cae5b84 4704 return 0;
f453ba04
DA		 4705}
4706EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4707
c8e32cc1
DV		 4708/**
4709 * drm_mode_gamma_set_ioctl - set the gamma table
4710 * @dev: DRM device
4711 * @data: ioctl data
4712 * @file_priv: DRM file info
4713 *
4714 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4715 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4716 *
4717 * Called by the user via ioctl.
4718 *
4719 * Returns:
1a498633 4720 * Zero on success, negative errno on failure.
c8e32cc1 4721 */
f453ba04
DA		 4722int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4723 void *data, struct drm_file *file_priv)
4724{
4725 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4726 struct drm_crtc *crtc;
4727 void *r_base, *g_base, *b_base;
4728 int size;
4729 int ret = 0;
4730
fb3b06c8
DA		 4731 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4732 return -EINVAL;
4733
84849903 4734 drm_modeset_lock_all(dev);
a2b34e22
RC		 4735 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4736 if (!crtc) {
f27657f2 4737 ret = -ENOENT;
f453ba04
DA		 4738 goto out;
4739 }
f453ba04 4740
ebe0f244
LP		 4741 if (crtc->funcs->gamma_set == NULL) {
4742 ret = -ENOSYS;
4743 goto out;
4744 }
4745
f453ba04
DA		 4746 /* memcpy into gamma store */
4747 if (crtc_lut->gamma_size != crtc->gamma_size) {
4748 ret = -EINVAL;
4749 goto out;
4750 }
4751
4752 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4753 r_base = crtc->gamma_store;
4754 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4755 ret = -EFAULT;
4756 goto out;
4757 }
4758
4759 g_base = r_base + size;
4760 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4761 ret = -EFAULT;
4762 goto out;
4763 }
4764
4765 b_base = g_base + size;
4766 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4767 ret = -EFAULT;
4768 goto out;
4769 }
4770
7203425a 4771 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 4772
4773out:
84849903 4774 drm_modeset_unlock_all(dev);
f453ba04
DA		 4775 return ret;
4776
4777}
4778
c8e32cc1
DV		 4779/**
4780 * drm_mode_gamma_get_ioctl - get the gamma table
4781 * @dev: DRM device
4782 * @data: ioctl data
4783 * @file_priv: DRM file info
4784 *
4785 * Copy the current gamma table into the storage provided. This also provides
4786 * the gamma table size the driver expects, which can be used to size the
4787 * allocated storage.
4788 *
4789 * Called by the user via ioctl.
4790 *
4791 * Returns:
1a498633 4792 * Zero on success, negative errno on failure.
c8e32cc1 4793 */
f453ba04
DA		 4794int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4795 void *data, struct drm_file *file_priv)
4796{
4797 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4798 struct drm_crtc *crtc;
4799 void *r_base, *g_base, *b_base;
4800 int size;
4801 int ret = 0;
4802
fb3b06c8
DA		 4803 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4804 return -EINVAL;
4805
84849903 4806 drm_modeset_lock_all(dev);
a2b34e22
RC		 4807 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4808 if (!crtc) {
f27657f2 4809 ret = -ENOENT;
f453ba04
DA		 4810 goto out;
4811 }
f453ba04
DA		 4812
4813 /* memcpy into gamma store */
4814 if (crtc_lut->gamma_size != crtc->gamma_size) {
4815 ret = -EINVAL;
4816 goto out;
4817 }
4818
4819 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4820 r_base = crtc->gamma_store;
4821 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4822 ret = -EFAULT;
4823 goto out;
4824 }
4825
4826 g_base = r_base + size;
4827 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4828 ret = -EFAULT;
4829 goto out;
4830 }
4831
4832 b_base = g_base + size;
4833 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4834 ret = -EFAULT;
4835 goto out;
4836 }
4837out:
84849903 4838 drm_modeset_unlock_all(dev);
f453ba04
DA		 4839 return ret;
4840}
d91d8a3f 4841
c8e32cc1
DV		 4842/**
4843 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4844 * @dev: DRM device
4845 * @data: ioctl data
4846 * @file_priv: DRM file info
4847 *
4848 * This schedules an asynchronous update on a given CRTC, called page flip.
4849 * Optionally a drm event is generated to signal the completion of the event.
4850 * Generic drivers cannot assume that a pageflip with changed framebuffer
4851 * properties (including driver specific metadata like tiling layout) will work,
4852 * but some drivers support e.g. pixel format changes through the pageflip
4853 * ioctl.
4854 *
4855 * Called by the user via ioctl.
4856 *
4857 * Returns:
1a498633 4858 * Zero on success, negative errno on failure.
c8e32cc1 4859 */
d91d8a3f
KH		 4860int drm_mode_page_flip_ioctl(struct drm_device *dev,
4861 void *data, struct drm_file *file_priv)
4862{
4863 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 4864 struct drm_crtc *crtc;
3d30a59b 4865 struct drm_framebuffer *fb = NULL;
d91d8a3f
KH		 4866 struct drm_pending_vblank_event *e = NULL;
4867 unsigned long flags;
4868 int ret = -EINVAL;
4869
4870 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4871 page_flip->reserved != 0)
4872 return -EINVAL;
4873
62f2104f
KP		 4874 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4875 return -EINVAL;
4876
a2b34e22
RC		 4877 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4878 if (!crtc)
f27657f2 4879 return -ENOENT;
d91d8a3f 4880
4d02e2de 4881 drm_modeset_lock_crtc(crtc, crtc->primary);
f4510a27 4882 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 4883 /* The framebuffer is currently unbound, presumably
4884 * due to a hotplug event, that userspace has not
4885 * yet discovered.
4886 */
4887 ret = -EBUSY;
4888 goto out;
4889 }
4890
d91d8a3f
KH		 4891 if (crtc->funcs->page_flip == NULL)
4892 goto out;
4893
786b99ed 4894 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 4895 if (!fb) {
4896 ret = -ENOENT;
d91d8a3f 4897 goto out;
37c4e705 4898 }
d91d8a3f 4899
c11e9283
DL		 4900 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4901 if (ret)
5f61bb42 4902 goto out;
5f61bb42 4903
f4510a27 4904 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 4905 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4906 ret = -EINVAL;
4907 goto out;
4908 }
4909
d91d8a3f
KH		 4910 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4911 ret = -ENOMEM;
4912 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 4913 if (file_priv->event_space < sizeof(e->event)) {
d91d8a3f
KH		 4914 spin_unlock_irqrestore(&dev->event_lock, flags);
4915 goto out;
4916 }
f76511b9 4917 file_priv->event_space -= sizeof(e->event);
d91d8a3f
KH		 4918 spin_unlock_irqrestore(&dev->event_lock, flags);
4919
f76511b9 4920 e = kzalloc(sizeof(*e), GFP_KERNEL);
d91d8a3f
KH		 4921 if (e == NULL) {
4922 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 4923 file_priv->event_space += sizeof(e->event);
d91d8a3f
KH		 4924 spin_unlock_irqrestore(&dev->event_lock, flags);
4925 goto out;
4926 }
4927
7bd4d7be 4928 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
f76511b9 4929 e->event.base.length = sizeof(e->event);
d91d8a3f
KH		 4930 e->event.user_data = page_flip->user_data;
4931 e->base.event = &e->event.base;
4932 e->base.file_priv = file_priv;
4933 e->base.destroy =
4934 (void (*) (struct drm_pending_event *)) kfree;
4935 }
4936
3d30a59b 4937 crtc->primary->old_fb = crtc->primary->fb;
ed8d1975 4938 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 4939 if (ret) {
aef6a7ee
JS		 4940 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4941 spin_lock_irqsave(&dev->event_lock, flags);
f76511b9 4942 file_priv->event_space += sizeof(e->event);
aef6a7ee
JS		 4943 spin_unlock_irqrestore(&dev->event_lock, flags);
4944 kfree(e);
4945 }
b0d12325 4946 /* Keep the old fb, don't unref it. */
3d30a59b 4947 crtc->primary->old_fb = NULL;
b0d12325 4948 } else {
8cf1e981
TR		 4949 /*
4950 * Warn if the driver hasn't properly updated the crtc->fb
4951 * field to reflect that the new framebuffer is now used.
4952 * Failing to do so will screw with the reference counting
4953 * on framebuffers.
4954 */
f4510a27 4955 WARN_ON(crtc->primary->fb != fb);
b0d12325
DV		 4956 /* Unref only the old framebuffer. */
4957 fb = NULL;
d91d8a3f
KH		 4958 }
4959
4960out:
b0d12325
DV		 4961 if (fb)
4962 drm_framebuffer_unreference(fb);
3d30a59b
DV		 4963 if (crtc->primary->old_fb)
4964 drm_framebuffer_unreference(crtc->primary->old_fb);
4965 crtc->primary->old_fb = NULL;
d059f652 4966 drm_modeset_unlock_crtc(crtc);
b4d5e7d1 4967
d91d8a3f
KH		 4968 return ret;
4969}
eb033556 4970
c8e32cc1
DV		 4971/**
4972 * drm_mode_config_reset - call ->reset callbacks
4973 * @dev: drm device
4974 *
4975 * This functions calls all the crtc's, encoder's and connector's ->reset
4976 * callback. Drivers can use this in e.g. their driver load or resume code to
4977 * reset hardware and software state.
4978 */
eb033556
CW		 4979void drm_mode_config_reset(struct drm_device *dev)
4980{
4981 struct drm_crtc *crtc;
2a0d7cfd 4982 struct drm_plane *plane;
eb033556
CW		 4983 struct drm_encoder *encoder;
4984 struct drm_connector *connector;
4985
2a0d7cfd
DV		 4986 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4987 if (plane->funcs->reset)
4988 plane->funcs->reset(plane);
4989
eb033556
CW		 4990 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4991 if (crtc->funcs->reset)
4992 crtc->funcs->reset(crtc);
4993
4994 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4995 if (encoder->funcs->reset)
4996 encoder->funcs->reset(encoder);
4997
5e2cb2f6
DV		 4998 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4999 connector->status = connector_status_unknown;
5000
eb033556
CW		 5001 if (connector->funcs->reset)
5002 connector->funcs->reset(connector);
5e2cb2f6 5003 }
eb033556
CW		 5004}
5005EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 5006
c8e32cc1
DV		 5007/**
5008 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5009 * @dev: DRM device
5010 * @data: ioctl data
5011 * @file_priv: DRM file info
5012 *
5013 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5014 * TTM or something else entirely) and returns the resulting buffer handle. This
5015 * handle can then be wrapped up into a framebuffer modeset object.
5016 *
5017 * Note that userspace is not allowed to use such objects for render
5018 * acceleration - drivers must create their own private ioctls for such a use
5019 * case.
5020 *
5021 * Called by the user via ioctl.
5022 *
5023 * Returns:
1a498633 5024 * Zero on success, negative errno on failure.
c8e32cc1 5025 */
ff72145b
DA		 5026int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5027 void *data, struct drm_file *file_priv)
5028{
5029 struct drm_mode_create_dumb *args = data;
b28cd41f 5030 u32 cpp, stride, size;
ff72145b
DA		 5031
5032 if (!dev->driver->dumb_create)
5033 return -ENOSYS;
b28cd41f
DH		 5034 if (!args->width || !args->height || !args->bpp)
5035 return -EINVAL;
5036
5037 /* overflow checks for 32bit size calculations */
00e72089 5038 /* NOTE: DIV_ROUND_UP() can overflow */
b28cd41f 5039 cpp = DIV_ROUND_UP(args->bpp, 8);
00e72089 5040 if (!cpp || cpp > 0xffffffffU / args->width)
b28cd41f
DH		 5041 return -EINVAL;
5042 stride = cpp * args->width;
5043 if (args->height > 0xffffffffU / stride)
5044 return -EINVAL;
5045
5046 /* test for wrap-around */
5047 size = args->height * stride;
5048 if (PAGE_ALIGN(size) == 0)
5049 return -EINVAL;
5050
f6085952
TR		 5051 /*
5052 * handle, pitch and size are output parameters. Zero them out to
5053 * prevent drivers from accidentally using uninitialized data. Since
5054 * not all existing userspace is clearing these fields properly we
5055 * cannot reject IOCTL with garbage in them.
5056 */
5057 args->handle = 0;
5058 args->pitch = 0;
5059 args->size = 0;
5060
ff72145b
DA		 5061 return dev->driver->dumb_create(file_priv, dev, args);
5062}
5063
c8e32cc1
DV		 5064/**
5065 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5066 * @dev: DRM device
5067 * @data: ioctl data
5068 * @file_priv: DRM file info
5069 *
5070 * Allocate an offset in the drm device node's address space to be able to
5071 * memory map a dumb buffer.
5072 *
5073 * Called by the user via ioctl.
5074 *
5075 * Returns:
1a498633 5076 * Zero on success, negative errno on failure.
c8e32cc1 5077 */
ff72145b
DA		 5078int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5079 void *data, struct drm_file *file_priv)
5080{
5081 struct drm_mode_map_dumb *args = data;
5082
5083 /* call driver ioctl to get mmap offset */
5084 if (!dev->driver->dumb_map_offset)
5085 return -ENOSYS;
5086
5087 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5088}
5089
c8e32cc1
DV		 5090/**
5091 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5092 * @dev: DRM device
5093 * @data: ioctl data
5094 * @file_priv: DRM file info
5095 *
5096 * This destroys the userspace handle for the given dumb backing storage buffer.
5097 * Since buffer objects must be reference counted in the kernel a buffer object
5098 * won't be immediately freed if a framebuffer modeset object still uses it.
5099 *
5100 * Called by the user via ioctl.
5101 *
5102 * Returns:
1a498633 5103 * Zero on success, negative errno on failure.
c8e32cc1 5104 */
ff72145b
DA		 5105int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5106 void *data, struct drm_file *file_priv)
5107{
5108 struct drm_mode_destroy_dumb *args = data;
5109
5110 if (!dev->driver->dumb_destroy)
5111 return -ENOSYS;
5112
5113 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5114}
248dbc23 5115
c8e32cc1
DV		 5116/**
5117 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5118 * @format: pixel format (DRM_FORMAT_*)
5119 * @depth: storage for the depth value
5120 * @bpp: storage for the bpp value
5121 *
5122 * This only supports RGB formats here for compat with code that doesn't use
5123 * pixel formats directly yet.
248dbc23
DA		 5124 */
5125void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5126 int *bpp)
5127{
5128 switch (format) {
c51a6bc5 5129 case DRM_FORMAT_C8:
04b3924d
VS		 5130 case DRM_FORMAT_RGB332:
5131 case DRM_FORMAT_BGR233:
248dbc23
DA		 5132 *depth = 8;
5133 *bpp = 8;
5134 break;
04b3924d
VS		 5135 case DRM_FORMAT_XRGB1555:
5136 case DRM_FORMAT_XBGR1555:
5137 case DRM_FORMAT_RGBX5551:
5138 case DRM_FORMAT_BGRX5551:
5139 case DRM_FORMAT_ARGB1555:
5140 case DRM_FORMAT_ABGR1555:
5141 case DRM_FORMAT_RGBA5551:
5142 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 5143 *depth = 15;
5144 *bpp = 16;
5145 break;
04b3924d
VS		 5146 case DRM_FORMAT_RGB565:
5147 case DRM_FORMAT_BGR565:
248dbc23
DA		 5148 *depth = 16;
5149 *bpp = 16;
5150 break;
04b3924d
VS		 5151 case DRM_FORMAT_RGB888:
5152 case DRM_FORMAT_BGR888:
5153 *depth = 24;
5154 *bpp = 24;
5155 break;
5156 case DRM_FORMAT_XRGB8888:
5157 case DRM_FORMAT_XBGR8888:
5158 case DRM_FORMAT_RGBX8888:
5159 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 5160 *depth = 24;
5161 *bpp = 32;
5162 break;
04b3924d
VS		 5163 case DRM_FORMAT_XRGB2101010:
5164 case DRM_FORMAT_XBGR2101010:
5165 case DRM_FORMAT_RGBX1010102:
5166 case DRM_FORMAT_BGRX1010102:
5167 case DRM_FORMAT_ARGB2101010:
5168 case DRM_FORMAT_ABGR2101010:
5169 case DRM_FORMAT_RGBA1010102:
5170 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 5171 *depth = 30;
5172 *bpp = 32;
5173 break;
04b3924d
VS		 5174 case DRM_FORMAT_ARGB8888:
5175 case DRM_FORMAT_ABGR8888:
5176 case DRM_FORMAT_RGBA8888:
5177 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 5178 *depth = 32;
5179 *bpp = 32;
5180 break;
5181 default:
23c453a4
VS		 5182 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5183 drm_get_format_name(format));
248dbc23
DA		 5184 *depth = 0;
5185 *bpp = 0;
5186 break;
5187 }
5188}
5189EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 5190
5191/**
5192 * drm_format_num_planes - get the number of planes for format
5193 * @format: pixel format (DRM_FORMAT_*)
5194 *
c8e32cc1 5195 * Returns:
141670e9
VS		 5196 * The number of planes used by the specified pixel format.
5197 */
5198int drm_format_num_planes(uint32_t format)
5199{
5200 switch (format) {
5201 case DRM_FORMAT_YUV410:
5202 case DRM_FORMAT_YVU410:
5203 case DRM_FORMAT_YUV411:
5204 case DRM_FORMAT_YVU411:
5205 case DRM_FORMAT_YUV420:
5206 case DRM_FORMAT_YVU420:
5207 case DRM_FORMAT_YUV422:
5208 case DRM_FORMAT_YVU422:
5209 case DRM_FORMAT_YUV444:
5210 case DRM_FORMAT_YVU444:
5211 return 3;
5212 case DRM_FORMAT_NV12:
5213 case DRM_FORMAT_NV21:
5214 case DRM_FORMAT_NV16:
5215 case DRM_FORMAT_NV61:
ba623f6a
LP		 5216 case DRM_FORMAT_NV24:
5217 case DRM_FORMAT_NV42:
141670e9
VS		 5218 return 2;
5219 default:
5220 return 1;
5221 }
5222}
5223EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 5224
5225/**
5226 * drm_format_plane_cpp - determine the bytes per pixel value
5227 * @format: pixel format (DRM_FORMAT_*)
5228 * @plane: plane index
5229 *
c8e32cc1 5230 * Returns:
5a86bd55
VS		 5231 * The bytes per pixel value for the specified plane.
5232 */
5233int drm_format_plane_cpp(uint32_t format, int plane)
5234{
5235 unsigned int depth;
5236 int bpp;
5237
5238 if (plane >= drm_format_num_planes(format))
5239 return 0;
5240
5241 switch (format) {
5242 case DRM_FORMAT_YUYV:
5243 case DRM_FORMAT_YVYU:
5244 case DRM_FORMAT_UYVY:
5245 case DRM_FORMAT_VYUY:
5246 return 2;
5247 case DRM_FORMAT_NV12:
5248 case DRM_FORMAT_NV21:
5249 case DRM_FORMAT_NV16:
5250 case DRM_FORMAT_NV61:
ba623f6a
LP		 5251 case DRM_FORMAT_NV24:
5252 case DRM_FORMAT_NV42:
5a86bd55
VS		 5253 return plane ? 2 : 1;
5254 case DRM_FORMAT_YUV410:
5255 case DRM_FORMAT_YVU410:
5256 case DRM_FORMAT_YUV411:
5257 case DRM_FORMAT_YVU411:
5258 case DRM_FORMAT_YUV420:
5259 case DRM_FORMAT_YVU420:
5260 case DRM_FORMAT_YUV422:
5261 case DRM_FORMAT_YVU422:
5262 case DRM_FORMAT_YUV444:
5263 case DRM_FORMAT_YVU444:
5264 return 1;
5265 default:
5266 drm_fb_get_bpp_depth(format, &depth, &bpp);
5267 return bpp >> 3;
5268 }
5269}
5270EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 5271
5272/**
5273 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5274 * @format: pixel format (DRM_FORMAT_*)
5275 *
c8e32cc1 5276 * Returns:
01b68b04
VS		 5277 * The horizontal chroma subsampling factor for the
5278 * specified pixel format.
5279 */
5280int drm_format_horz_chroma_subsampling(uint32_t format)
5281{
5282 switch (format) {
5283 case DRM_FORMAT_YUV411:
5284 case DRM_FORMAT_YVU411:
5285 case DRM_FORMAT_YUV410:
5286 case DRM_FORMAT_YVU410:
5287 return 4;
5288 case DRM_FORMAT_YUYV:
5289 case DRM_FORMAT_YVYU:
5290 case DRM_FORMAT_UYVY:
5291 case DRM_FORMAT_VYUY:
5292 case DRM_FORMAT_NV12:
5293 case DRM_FORMAT_NV21:
5294 case DRM_FORMAT_NV16:
5295 case DRM_FORMAT_NV61:
5296 case DRM_FORMAT_YUV422:
5297 case DRM_FORMAT_YVU422:
5298 case DRM_FORMAT_YUV420:
5299 case DRM_FORMAT_YVU420:
5300 return 2;
5301 default:
5302 return 1;
5303 }
5304}
5305EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5306
5307/**
5308 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5309 * @format: pixel format (DRM_FORMAT_*)
5310 *
c8e32cc1 5311 * Returns:
01b68b04
VS		 5312 * The vertical chroma subsampling factor for the
5313 * specified pixel format.
5314 */
5315int drm_format_vert_chroma_subsampling(uint32_t format)
5316{
5317 switch (format) {
5318 case DRM_FORMAT_YUV410:
5319 case DRM_FORMAT_YVU410:
5320 return 4;
5321 case DRM_FORMAT_YUV420:
5322 case DRM_FORMAT_YVU420:
5323 case DRM_FORMAT_NV12:
5324 case DRM_FORMAT_NV21:
5325 return 2;
5326 default:
5327 return 1;
5328 }
5329}
5330EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3 5331
3c9855f6
VS		 5332/**
5333 * drm_rotation_simplify() - Try to simplify the rotation
5334 * @rotation: Rotation to be simplified
5335 * @supported_rotations: Supported rotations
5336 *
5337 * Attempt to simplify the rotation to a form that is supported.
5338 * Eg. if the hardware supports everything except DRM_REFLECT_X
5339 * one could call this function like this:
5340 *
5341 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5342 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5343 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5344 *
5345 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5346 * transforms the hardware supports, this function may not
5347 * be able to produce a supported transform, so the caller should
5348 * check the result afterwards.
5349 */
5350unsigned int drm_rotation_simplify(unsigned int rotation,
5351 unsigned int supported_rotations)
5352{
5353 if (rotation & ~supported_rotations) {
5354 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5355 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5356 }
5357
5358 return rotation;
5359}
5360EXPORT_SYMBOL(drm_rotation_simplify);
5361
87d24fc3
LP		 5362/**
5363 * drm_mode_config_init - initialize DRM mode_configuration structure
5364 * @dev: DRM device
5365 *
5366 * Initialize @dev's mode_config structure, used for tracking the graphics
5367 * configuration of @dev.
5368 *
5369 * Since this initializes the modeset locks, no locking is possible. Which is no
5370 * problem, since this should happen single threaded at init time. It is the
5371 * driver's problem to ensure this guarantee.
5372 *
5373 */
5374void drm_mode_config_init(struct drm_device *dev)
5375{
5376 mutex_init(&dev->mode_config.mutex);
51fd371b 5377 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5378 mutex_init(&dev->mode_config.idr_mutex);
5379 mutex_init(&dev->mode_config.fb_lock);
5380 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5381 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5382 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5383 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5384 INIT_LIST_HEAD(&dev->mode_config.property_list);
5385 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5386 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5387 idr_init(&dev->mode_config.crtc_idr);
138f9ebb 5388 idr_init(&dev->mode_config.tile_idr);
87d24fc3
LP		 5389
5390 drm_modeset_lock_all(dev);
6b4959f4 5391 drm_mode_create_standard_properties(dev);
87d24fc3
LP		 5392 drm_modeset_unlock_all(dev);
5393
5394 /* Just to be sure */
5395 dev->mode_config.num_fb = 0;
5396 dev->mode_config.num_connector = 0;
5397 dev->mode_config.num_crtc = 0;
5398 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 5399 dev->mode_config.num_overlay_plane = 0;
5400 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 5401}
5402EXPORT_SYMBOL(drm_mode_config_init);
5403
5404/**
5405 * drm_mode_config_cleanup - free up DRM mode_config info
5406 * @dev: DRM device
5407 *
5408 * Free up all the connectors and CRTCs associated with this DRM device, then
5409 * free up the framebuffers and associated buffer objects.
5410 *
5411 * Note that since this /should/ happen single-threaded at driver/device
5412 * teardown time, no locking is required. It's the driver's job to ensure that
5413 * this guarantee actually holds true.
5414 *
5415 * FIXME: cleanup any dangling user buffer objects too
5416 */
5417void drm_mode_config_cleanup(struct drm_device *dev)
5418{
5419 struct drm_connector *connector, *ot;
5420 struct drm_crtc *crtc, *ct;
5421 struct drm_encoder *encoder, *enct;
5422 struct drm_framebuffer *fb, *fbt;
5423 struct drm_property *property, *pt;
5424 struct drm_property_blob *blob, *bt;
5425 struct drm_plane *plane, *plt;
5426
5427 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5428 head) {
5429 encoder->funcs->destroy(encoder);
5430 }
5431
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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