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Linux 3.18-rc1
[linux-2.6-block.git] / drivers / gpu / drm / drm_crtc.c
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f453ba04
DA		 1/*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
6ba6d03e 32#include <linux/ctype.h>
f453ba04 33#include <linux/list.h>
5a0e3ad6 34#include <linux/slab.h>
2d1a8a48 35#include <linux/export.h>
760285e7
DH		 36#include <drm/drmP.h>
37#include <drm/drm_crtc.h>
38#include <drm/drm_edid.h>
39#include <drm/drm_fourcc.h>
51fd371b 40#include <drm/drm_modeset_lock.h>
f453ba04 41
8bd441b2 42#include "drm_crtc_internal.h"
67d0ec4e 43#include "drm_internal.h"
8bd441b2 44
c394c2b0
MR		 45static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
46 struct drm_mode_fb_cmd2 *r,
47 struct drm_file *file_priv);
48
f453ba04
DA		 49/* Avoid boilerplate. I'm tired of typing. */
50#define DRM_ENUM_NAME_FN(fnname, list) \
d20d3174 51 const char *fnname(int val) \
f453ba04
DA		 52 { \
53 int i; \
54 for (i = 0; i < ARRAY_SIZE(list); i++) { \
55 if (list[i].type == val) \
56 return list[i].name; \
57 } \
58 return "(unknown)"; \
59 }
60
61/*
62 * Global properties
63 */
d20d3174 64static const struct drm_prop_enum_list drm_dpms_enum_list[] =
f453ba04
DA		 65{ { DRM_MODE_DPMS_ON, "On" },
66 { DRM_MODE_DPMS_STANDBY, "Standby" },
67 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
68 { DRM_MODE_DPMS_OFF, "Off" }
69};
70
71DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
72
9922ab5a
RC		 73static const struct drm_prop_enum_list drm_plane_type_enum_list[] =
74{
75 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
78};
79
f453ba04
DA		 80/*
81 * Optional properties
82 */
d20d3174 83static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
f453ba04 84{
53bd8389
JB		 85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 89};
90
ff587e45
VK		 91static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
95};
96
f453ba04
DA		 97/*
98 * Non-global properties, but "required" for certain connectors.
99 */
d20d3174 100static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
f453ba04
DA		 101{
102 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
103 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
104 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
105};
106
107DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
108
d20d3174 109static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
f453ba04
DA		 110{
111 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
112 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
113 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
114};
115
116DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
117 drm_dvi_i_subconnector_enum_list)
118
d20d3174 119static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
f453ba04
DA		 120{
121 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 125 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 126};
127
128DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
129
d20d3174 130static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
f453ba04
DA		 131{
132 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
133 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
134 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
135 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 136 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 137};
138
139DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
140 drm_tv_subconnector_enum_list)
141
d20d3174 142static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
884840aa
JB		 143 { DRM_MODE_DIRTY_OFF, "Off" },
144 { DRM_MODE_DIRTY_ON, "On" },
145 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
146};
147
f453ba04
DA		 148struct drm_conn_prop_enum_list {
149 int type;
d20d3174 150 const char *name;
b21e3afe 151 struct ida ida;
f453ba04
DA		 152};
153
154/*
155 * Connector and encoder types.
156 */
157static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
b21e3afe
IM		 158{ { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
159 { DRM_MODE_CONNECTOR_VGA, "VGA" },
160 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
161 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
162 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
163 { DRM_MODE_CONNECTOR_Composite, "Composite" },
164 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
165 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
166 { DRM_MODE_CONNECTOR_Component, "Component" },
167 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
168 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
169 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
170 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
171 { DRM_MODE_CONNECTOR_TV, "TV" },
172 { DRM_MODE_CONNECTOR_eDP, "eDP" },
173 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
b8923273 174 { DRM_MODE_CONNECTOR_DSI, "DSI" },
f453ba04
DA		 175};
176
d20d3174 177static const struct drm_prop_enum_list drm_encoder_enum_list[] =
f453ba04
DA		 178{ { DRM_MODE_ENCODER_NONE, "None" },
179 { DRM_MODE_ENCODER_DAC, "DAC" },
180 { DRM_MODE_ENCODER_TMDS, "TMDS" },
181 { DRM_MODE_ENCODER_LVDS, "LVDS" },
182 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 183 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
b8923273 184 { DRM_MODE_ENCODER_DSI, "DSI" },
182407a6 185 { DRM_MODE_ENCODER_DPMST, "DP MST" },
f453ba04
DA		 186};
187
ac1bb36c
JB		 188static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
189{
190 { SubPixelUnknown, "Unknown" },
191 { SubPixelHorizontalRGB, "Horizontal RGB" },
192 { SubPixelHorizontalBGR, "Horizontal BGR" },
193 { SubPixelVerticalRGB, "Vertical RGB" },
194 { SubPixelVerticalBGR, "Vertical BGR" },
195 { SubPixelNone, "None" },
196};
197
b21e3afe
IM		 198void drm_connector_ida_init(void)
199{
200 int i;
201
202 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
203 ida_init(&drm_connector_enum_list[i].ida);
204}
205
206void drm_connector_ida_destroy(void)
207{
208 int i;
209
210 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
211 ida_destroy(&drm_connector_enum_list[i].ida);
212}
213
c8e32cc1
DV		 214/**
215 * drm_get_connector_status_name - return a string for connector status
216 * @status: connector status to compute name of
217 *
218 * In contrast to the other drm_get_*_name functions this one here returns a
219 * const pointer and hence is threadsafe.
220 */
d20d3174 221const char *drm_get_connector_status_name(enum drm_connector_status status)
f453ba04
DA		 222{
223 if (status == connector_status_connected)
224 return "connected";
225 else if (status == connector_status_disconnected)
226 return "disconnected";
227 else
228 return "unknown";
229}
ed7951dc 230EXPORT_SYMBOL(drm_get_connector_status_name);
f453ba04 231
ac1bb36c
JB		 232/**
233 * drm_get_subpixel_order_name - return a string for a given subpixel enum
234 * @order: enum of subpixel_order
235 *
236 * Note you could abuse this and return something out of bounds, but that
237 * would be a caller error. No unscrubbed user data should make it here.
238 */
239const char *drm_get_subpixel_order_name(enum subpixel_order order)
240{
241 return drm_subpixel_enum_list[order].name;
242}
243EXPORT_SYMBOL(drm_get_subpixel_order_name);
244
6ba6d03e
VS		 245static char printable_char(int c)
246{
247 return isascii(c) && isprint(c) ? c : '?';
248}
249
c8e32cc1
DV		 250/**
251 * drm_get_format_name - return a string for drm fourcc format
252 * @format: format to compute name of
253 *
254 * Note that the buffer used by this function is globally shared and owned by
255 * the function itself.
256 *
257 * FIXME: This isn't really multithreading safe.
258 */
d20d3174 259const char *drm_get_format_name(uint32_t format)
6ba6d03e
VS		 260{
261 static char buf[32];
262
263 snprintf(buf, sizeof(buf),
264 "%c%c%c%c %s-endian (0x%08x)",
265 printable_char(format & 0xff),
266 printable_char((format >> 8) & 0xff),
267 printable_char((format >> 16) & 0xff),
268 printable_char((format >> 24) & 0x7f),
269 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
270 format);
271
272 return buf;
273}
274EXPORT_SYMBOL(drm_get_format_name);
275
2ee39452
DA		 276/*
277 * Internal function to assign a slot in the object idr and optionally
278 * register the object into the idr.
279 */
280static int drm_mode_object_get_reg(struct drm_device *dev,
281 struct drm_mode_object *obj,
282 uint32_t obj_type,
283 bool register_obj)
284{
285 int ret;
286
287 mutex_lock(&dev->mode_config.idr_mutex);
288 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
289 if (ret >= 0) {
290 /*
291 * Set up the object linking under the protection of the idr
292 * lock so that other users can't see inconsistent state.
293 */
294 obj->id = ret;
295 obj->type = obj_type;
296 }
297 mutex_unlock(&dev->mode_config.idr_mutex);
298
299 return ret < 0 ? ret : 0;
300}
301
f453ba04 302/**
065a50ed 303 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 304 * @dev: DRM device
065a50ed
DV		 305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
f453ba04 307 *
f453ba04 308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
c8e32cc1
DV		 309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
f453ba04 312 *
c8e32cc1 313 * Returns:
f453ba04
DA		 314 * New unique (relative to other objects in @dev) integer identifier for the
315 * object.
316 */
8bd441b2
DV		 317int drm_mode_object_get(struct drm_device *dev,
318 struct drm_mode_object *obj, uint32_t obj_type)
f453ba04 319{
2ee39452
DA		 320 return drm_mode_object_get_reg(dev, obj, obj_type, true);
321}
f453ba04 322
2ee39452
DA		 323static void drm_mode_object_register(struct drm_device *dev,
324 struct drm_mode_object *obj)
325{
ad2563c2 326 mutex_lock(&dev->mode_config.idr_mutex);
2ee39452 327 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
ad2563c2 328 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 329}
330
331/**
065a50ed 332 * drm_mode_object_put - free a modeset identifer
f453ba04 333 * @dev: DRM device
065a50ed 334 * @object: object to free
f453ba04 335 *
c8e32cc1
DV		 336 * Free @id from @dev's unique identifier pool. Note that despite the _get
337 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
338 * for reference counted modeset objects like framebuffers.
f453ba04 339 */
8bd441b2
DV		 340void drm_mode_object_put(struct drm_device *dev,
341 struct drm_mode_object *object)
f453ba04 342{
ad2563c2 343 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 344 idr_remove(&dev->mode_config.crtc_idr, object->id);
ad2563c2 345 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 346}
347
98f75de4
RC		 348static struct drm_mode_object *_object_find(struct drm_device *dev,
349 uint32_t id, uint32_t type)
350{
351 struct drm_mode_object *obj = NULL;
352
353 mutex_lock(&dev->mode_config.idr_mutex);
354 obj = idr_find(&dev->mode_config.crtc_idr, id);
168c02ec
DV		 355 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
356 obj = NULL;
357 if (obj && obj->id != id)
358 obj = NULL;
359 /* don't leak out unref'd fb's */
360 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
98f75de4
RC		 361 obj = NULL;
362 mutex_unlock(&dev->mode_config.idr_mutex);
363
364 return obj;
365}
366
786b99ed
DV		 367/**
368 * drm_mode_object_find - look up a drm object with static lifetime
369 * @dev: drm device
370 * @id: id of the mode object
371 * @type: type of the mode object
372 *
373 * Note that framebuffers cannot be looked up with this functions - since those
98f75de4
RC		 374 * are reference counted, they need special treatment. Even with
375 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
376 * rather than WARN_ON()).
786b99ed 377 */
7a9c9060
DV		 378struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
379 uint32_t id, uint32_t type)
f453ba04 380{
ad2563c2 381 struct drm_mode_object *obj = NULL;
f453ba04 382
786b99ed
DV		 383 /* Framebuffers are reference counted and need their own lookup
384 * function.*/
385 WARN_ON(type == DRM_MODE_OBJECT_FB);
98f75de4 386 obj = _object_find(dev, id, type);
f453ba04
DA		 387 return obj;
388}
389EXPORT_SYMBOL(drm_mode_object_find);
390
f453ba04
DA		 391/**
392 * drm_framebuffer_init - initialize a framebuffer
393 * @dev: DRM device
065a50ed
DV		 394 * @fb: framebuffer to be initialized
395 * @funcs: ... with these functions
f453ba04 396 *
f453ba04
DA		 397 * Allocates an ID for the framebuffer's parent mode object, sets its mode
398 * functions & device file and adds it to the master fd list.
399 *
4b096ac1
DV		 400 * IMPORTANT:
401 * This functions publishes the fb and makes it available for concurrent access
402 * by other users. Which means by this point the fb _must_ be fully set up -
403 * since all the fb attributes are invariant over its lifetime, no further
404 * locking but only correct reference counting is required.
405 *
c8e32cc1 406 * Returns:
af901ca1 407 * Zero on success, error code on failure.
f453ba04
DA		 408 */
409int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
410 const struct drm_framebuffer_funcs *funcs)
411{
412 int ret;
413
4b096ac1 414 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e 415 kref_init(&fb->refcount);
4b096ac1
DV		 416 INIT_LIST_HEAD(&fb->filp_head);
417 fb->dev = dev;
418 fb->funcs = funcs;
f7eff60e 419
f453ba04 420 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
6bfc56aa 421 if (ret)
4b096ac1 422 goto out;
f453ba04 423
f453ba04
DA		 424 dev->mode_config.num_fb++;
425 list_add(&fb->head, &dev->mode_config.fb_list);
4b096ac1
DV		 426out:
427 mutex_unlock(&dev->mode_config.fb_lock);
f453ba04
DA		 428
429 return 0;
430}
431EXPORT_SYMBOL(drm_framebuffer_init);
432
83f45fc3
DV		 433/* dev->mode_config.fb_lock must be held! */
434static void __drm_framebuffer_unregister(struct drm_device *dev,
435 struct drm_framebuffer *fb)
436{
437 mutex_lock(&dev->mode_config.idr_mutex);
438 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
439 mutex_unlock(&dev->mode_config.idr_mutex);
440
441 fb->base.id = 0;
442}
443
f7eff60e
RC		 444static void drm_framebuffer_free(struct kref *kref)
445{
446 struct drm_framebuffer *fb =
447 container_of(kref, struct drm_framebuffer, refcount);
83f45fc3
DV		 448 struct drm_device *dev = fb->dev;
449
450 /*
451 * The lookup idr holds a weak reference, which has not necessarily been
452 * removed at this point. Check for that.
453 */
454 mutex_lock(&dev->mode_config.fb_lock);
455 if (fb->base.id) {
456 /* Mark fb as reaped and drop idr ref. */
457 __drm_framebuffer_unregister(dev, fb);
458 }
459 mutex_unlock(&dev->mode_config.fb_lock);
460
f7eff60e
RC		 461 fb->funcs->destroy(fb);
462}
463
2b677e8c
DV		 464static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
465 uint32_t id)
466{
467 struct drm_mode_object *obj = NULL;
468 struct drm_framebuffer *fb;
469
470 mutex_lock(&dev->mode_config.idr_mutex);
471 obj = idr_find(&dev->mode_config.crtc_idr, id);
472 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
473 fb = NULL;
474 else
475 fb = obj_to_fb(obj);
476 mutex_unlock(&dev->mode_config.idr_mutex);
477
478 return fb;
479}
480
786b99ed
DV		 481/**
482 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
483 * @dev: drm device
484 * @id: id of the fb object
485 *
486 * If successful, this grabs an additional reference to the framebuffer -
487 * callers need to make sure to eventually unreference the returned framebuffer
c8e32cc1 488 * again, using @drm_framebuffer_unreference.
786b99ed
DV		 489 */
490struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
491 uint32_t id)
492{
786b99ed
DV		 493 struct drm_framebuffer *fb;
494
495 mutex_lock(&dev->mode_config.fb_lock);
2b677e8c 496 fb = __drm_framebuffer_lookup(dev, id);
83f45fc3
DV		 497 if (fb) {
498 if (!kref_get_unless_zero(&fb->refcount))
499 fb = NULL;
500 }
786b99ed
DV		 501 mutex_unlock(&dev->mode_config.fb_lock);
502
503 return fb;
504}
505EXPORT_SYMBOL(drm_framebuffer_lookup);
506
f7eff60e
RC		 507/**
508 * drm_framebuffer_unreference - unref a framebuffer
065a50ed
DV		 509 * @fb: framebuffer to unref
510 *
511 * This functions decrements the fb's refcount and frees it if it drops to zero.
f7eff60e
RC		 512 */
513void drm_framebuffer_unreference(struct drm_framebuffer *fb)
514{
8291272a 515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 516 kref_put(&fb->refcount, drm_framebuffer_free);
517}
518EXPORT_SYMBOL(drm_framebuffer_unreference);
519
520/**
521 * drm_framebuffer_reference - incr the fb refcnt
065a50ed 522 * @fb: framebuffer
c8e32cc1
DV		 523 *
524 * This functions increments the fb's refcount.
f7eff60e
RC		 525 */
526void drm_framebuffer_reference(struct drm_framebuffer *fb)
527{
8291272a 528 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
f7eff60e
RC		 529 kref_get(&fb->refcount);
530}
531EXPORT_SYMBOL(drm_framebuffer_reference);
532
2b677e8c
DV		 533static void drm_framebuffer_free_bug(struct kref *kref)
534{
535 BUG();
536}
537
6c2a7532
DV		 538static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
539{
8291272a 540 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
6c2a7532
DV		 541 kref_put(&fb->refcount, drm_framebuffer_free_bug);
542}
543
36206361
DV		 544/**
545 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
546 * @fb: fb to unregister
547 *
548 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
549 * those used for fbdev. Note that the caller must hold a reference of it's own,
550 * i.e. the object may not be destroyed through this call (since it'll lead to a
551 * locking inversion).
552 */
553void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
554{
2b677e8c
DV		 555 struct drm_device *dev = fb->dev;
556
557 mutex_lock(&dev->mode_config.fb_lock);
558 /* Mark fb as reaped and drop idr ref. */
559 __drm_framebuffer_unregister(dev, fb);
560 mutex_unlock(&dev->mode_config.fb_lock);
36206361
DV		 561}
562EXPORT_SYMBOL(drm_framebuffer_unregister_private);
563
f453ba04
DA		 564/**
565 * drm_framebuffer_cleanup - remove a framebuffer object
566 * @fb: framebuffer to remove
567 *
c8e32cc1
DV		 568 * Cleanup framebuffer. This function is intended to be used from the drivers
569 * ->destroy callback. It can also be used to clean up driver private
570 * framebuffers embedded into a larger structure.
36206361
DV		 571 *
572 * Note that this function does not remove the fb from active usuage - if it is
573 * still used anywhere, hilarity can ensue since userspace could call getfb on
574 * the id and get back -EINVAL. Obviously no concern at driver unload time.
575 *
576 * Also, the framebuffer will not be removed from the lookup idr - for
577 * user-created framebuffers this will happen in in the rmfb ioctl. For
578 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
579 * drm_framebuffer_unregister_private.
f453ba04
DA		 580 */
581void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
f7eff60e
RC		 582{
583 struct drm_device *dev = fb->dev;
8faf6b18 584
4b096ac1 585 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e
RC		 586 list_del(&fb->head);
587 dev->mode_config.num_fb--;
4b096ac1 588 mutex_unlock(&dev->mode_config.fb_lock);
f7eff60e
RC		 589}
590EXPORT_SYMBOL(drm_framebuffer_cleanup);
591
592/**
593 * drm_framebuffer_remove - remove and unreference a framebuffer object
594 * @fb: framebuffer to remove
595 *
f7eff60e 596 * Scans all the CRTCs and planes in @dev's mode_config. If they're
36206361 597 * using @fb, removes it, setting it to NULL. Then drops the reference to the
b62584e3
DV		 598 * passed-in framebuffer. Might take the modeset locks.
599 *
600 * Note that this function optimizes the cleanup away if the caller holds the
601 * last reference to the framebuffer. It is also guaranteed to not take the
602 * modeset locks in this case.
f7eff60e
RC		 603 */
604void drm_framebuffer_remove(struct drm_framebuffer *fb)
f453ba04
DA		 605{
606 struct drm_device *dev = fb->dev;
607 struct drm_crtc *crtc;
8cf5c917 608 struct drm_plane *plane;
5ef5f72f
DA		 609 struct drm_mode_set set;
610 int ret;
f453ba04 611
4b096ac1 612 WARN_ON(!list_empty(&fb->filp_head));
8faf6b18 613
b62584e3
DV		 614 /*
615 * drm ABI mandates that we remove any deleted framebuffers from active
616 * useage. But since most sane clients only remove framebuffers they no
617 * longer need, try to optimize this away.
618 *
619 * Since we're holding a reference ourselves, observing a refcount of 1
620 * means that we're the last holder and can skip it. Also, the refcount
621 * can never increase from 1 again, so we don't need any barriers or
622 * locks.
623 *
624 * Note that userspace could try to race with use and instate a new
625 * usage _after_ we've cleared all current ones. End result will be an
626 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
627 * in this manner.
628 */
629 if (atomic_read(&fb->refcount.refcount) > 1) {
630 drm_modeset_lock_all(dev);
631 /* remove from any CRTC */
632 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
f4510a27 633 if (crtc->primary->fb == fb) {
b62584e3
DV		 634 /* should turn off the crtc */
635 memset(&set, 0, sizeof(struct drm_mode_set));
636 set.crtc = crtc;
637 set.fb = NULL;
638 ret = drm_mode_set_config_internal(&set);
639 if (ret)
640 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
641 }
5ef5f72f 642 }
f453ba04 643
b62584e3 644 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
9125e618
VS		 645 if (plane->fb == fb)
646 drm_plane_force_disable(plane);
8cf5c917 647 }
b62584e3 648 drm_modeset_unlock_all(dev);
8cf5c917
JB		 649 }
650
f7eff60e 651 drm_framebuffer_unreference(fb);
f453ba04 652}
f7eff60e 653EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04 654
51fd371b
RC		 655DEFINE_WW_CLASS(crtc_ww_class);
656
f453ba04 657/**
e13161af
MR		 658 * drm_crtc_init_with_planes - Initialise a new CRTC object with
659 * specified primary and cursor planes.
f453ba04
DA		 660 * @dev: DRM device
661 * @crtc: CRTC object to init
e13161af
MR		 662 * @primary: Primary plane for CRTC
663 * @cursor: Cursor plane for CRTC
f453ba04
DA		 664 * @funcs: callbacks for the new CRTC
665 *
ad6f5c34 666 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 667 *
c8e32cc1 668 * Returns:
6bfc56aa 669 * Zero on success, error code on failure.
f453ba04 670 */
e13161af
MR		 671int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
672 struct drm_plane *primary,
fc1d3e44 673 struct drm_plane *cursor,
e13161af 674 const struct drm_crtc_funcs *funcs)
f453ba04 675{
51fd371b 676 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 677 int ret;
678
f453ba04
DA		 679 crtc->dev = dev;
680 crtc->funcs = funcs;
7c80e128 681 crtc->invert_dimensions = false;
f453ba04 682
51fd371b 683 drm_modeset_lock_init(&crtc->mutex);
6bfc56aa
VS		 684 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
685 if (ret)
686 goto out;
f453ba04 687
bffd9de0
PZ		 688 crtc->base.properties = &crtc->properties;
689
51fd371b
RC		 690 list_add_tail(&crtc->head, &config->crtc_list);
691 config->num_crtc++;
6bfc56aa 692
e13161af 693 crtc->primary = primary;
fc1d3e44 694 crtc->cursor = cursor;
e13161af
MR		 695 if (primary)
696 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
fc1d3e44
MR		 697 if (cursor)
698 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
e13161af 699
6bfc56aa 700 out:
6bfc56aa
VS		 701
702 return ret;
f453ba04 703}
e13161af 704EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 705
706/**
ad6f5c34 707 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 708 * @crtc: CRTC to cleanup
709 *
ad6f5c34
VS		 710 * This function cleans up @crtc and removes it from the DRM mode setting
711 * core. Note that the function does *not* free the crtc structure itself,
712 * this is the responsibility of the caller.
f453ba04
DA		 713 */
714void drm_crtc_cleanup(struct drm_crtc *crtc)
715{
716 struct drm_device *dev = crtc->dev;
717
9e1c156f
SK		 718 kfree(crtc->gamma_store);
719 crtc->gamma_store = NULL;
f453ba04 720
51fd371b
RC		 721 drm_modeset_lock_fini(&crtc->mutex);
722
f453ba04
DA		 723 drm_mode_object_put(dev, &crtc->base);
724 list_del(&crtc->head);
725 dev->mode_config.num_crtc--;
726}
727EXPORT_SYMBOL(drm_crtc_cleanup);
728
db5f7a6e
RK		 729/**
730 * drm_crtc_index - find the index of a registered CRTC
731 * @crtc: CRTC to find index for
732 *
733 * Given a registered CRTC, return the index of that CRTC within a DRM
734 * device's list of CRTCs.
735 */
736unsigned int drm_crtc_index(struct drm_crtc *crtc)
737{
738 unsigned int index = 0;
739 struct drm_crtc *tmp;
740
741 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
742 if (tmp == crtc)
743 return index;
744
745 index++;
746 }
747
748 BUG();
749}
750EXPORT_SYMBOL(drm_crtc_index);
751
86f422d5 752/*
f453ba04
DA		 753 * drm_mode_remove - remove and free a mode
754 * @connector: connector list to modify
755 * @mode: mode to remove
756 *
f453ba04
DA		 757 * Remove @mode from @connector's mode list, then free it.
758 */
86f422d5
LD		 759static void drm_mode_remove(struct drm_connector *connector,
760 struct drm_display_mode *mode)
f453ba04
DA		 761{
762 list_del(&mode->head);
554f1d78 763 drm_mode_destroy(connector->dev, mode);
f453ba04 764}
f453ba04 765
eaf99c74
CW		 766/**
767 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
768 * @connector: connector to quwery
769 * @mode: returned mode
770 *
771 * The kernel supports per-connector configration of its consoles through
772 * use of the video= parameter. This function parses that option and
773 * extracts the user's specified mode (or enable/disable status) for a
774 * particular connector. This is typically only used during the early fbdev
775 * setup.
776 */
777static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
778{
779 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
780 char *option = NULL;
781
782 if (fb_get_options(connector->name, &option))
783 return;
784
785 if (!drm_mode_parse_command_line_for_connector(option,
786 connector,
787 mode))
788 return;
789
790 if (mode->force) {
791 const char *s;
792
793 switch (mode->force) {
794 case DRM_FORCE_OFF:
795 s = "OFF";
796 break;
797 case DRM_FORCE_ON_DIGITAL:
798 s = "ON - dig";
799 break;
800 default:
801 case DRM_FORCE_ON:
802 s = "ON";
803 break;
804 }
805
806 DRM_INFO("forcing %s connector %s\n", connector->name, s);
807 connector->force = mode->force;
808 }
809
810 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
811 connector->name,
812 mode->xres, mode->yres,
813 mode->refresh_specified ? mode->refresh : 60,
814 mode->rb ? " reduced blanking" : "",
815 mode->margins ? " with margins" : "",
816 mode->interlace ? " interlaced" : "");
817}
818
f453ba04
DA		 819/**
820 * drm_connector_init - Init a preallocated connector
821 * @dev: DRM device
822 * @connector: the connector to init
823 * @funcs: callbacks for this connector
065a50ed 824 * @connector_type: user visible type of the connector
f453ba04 825 *
f453ba04
DA		 826 * Initialises a preallocated connector. Connectors should be
827 * subclassed as part of driver connector objects.
6bfc56aa 828 *
c8e32cc1 829 * Returns:
6bfc56aa 830 * Zero on success, error code on failure.
f453ba04 831 */
6bfc56aa
VS		 832int drm_connector_init(struct drm_device *dev,
833 struct drm_connector *connector,
834 const struct drm_connector_funcs *funcs,
835 int connector_type)
f453ba04 836{
6bfc56aa 837 int ret;
b21e3afe
IM		 838 struct ida *connector_ida =
839 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 840
84849903 841 drm_modeset_lock_all(dev);
f453ba04 842
2ee39452 843 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
6bfc56aa 844 if (ret)
2abdd313 845 goto out_unlock;
6bfc56aa 846
7e3bdf4a 847 connector->base.properties = &connector->properties;
f453ba04
DA		 848 connector->dev = dev;
849 connector->funcs = funcs;
f453ba04
DA		 850 connector->connector_type = connector_type;
851 connector->connector_type_id =
b21e3afe
IM		 852 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
853 if (connector->connector_type_id < 0) {
854 ret = connector->connector_type_id;
2abdd313 855 goto out_put;
b21e3afe 856 }
2abdd313
JN		 857 connector->name =
858 kasprintf(GFP_KERNEL, "%s-%d",
859 drm_connector_enum_list[connector_type].name,
860 connector->connector_type_id);
861 if (!connector->name) {
862 ret = -ENOMEM;
863 goto out_put;
864 }
865
f453ba04
DA		 866 INIT_LIST_HEAD(&connector->probed_modes);
867 INIT_LIST_HEAD(&connector->modes);
868 connector->edid_blob_ptr = NULL;
5e2cb2f6 869 connector->status = connector_status_unknown;
f453ba04 870
eaf99c74
CW		 871 drm_connector_get_cmdline_mode(connector);
872
f453ba04
DA		 873 list_add_tail(&connector->head, &dev->mode_config.connector_list);
874 dev->mode_config.num_connector++;
875
a7331e5c 876 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 877 drm_object_attach_property(&connector->base,
a7331e5c
TH		 878 dev->mode_config.edid_property,
879 0);
f453ba04 880
58495563 881 drm_object_attach_property(&connector->base,
f453ba04
DA		 882 dev->mode_config.dpms_property, 0);
883
30f65707
TW		 884 connector->debugfs_entry = NULL;
885
2abdd313
JN		 886out_put:
887 if (ret)
888 drm_mode_object_put(dev, &connector->base);
889
890out_unlock:
84849903 891 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 892
893 return ret;
f453ba04
DA		 894}
895EXPORT_SYMBOL(drm_connector_init);
896
897/**
898 * drm_connector_cleanup - cleans up an initialised connector
899 * @connector: connector to cleanup
900 *
f453ba04
DA		 901 * Cleans up the connector but doesn't free the object.
902 */
903void drm_connector_cleanup(struct drm_connector *connector)
904{
905 struct drm_device *dev = connector->dev;
906 struct drm_display_mode *mode, *t;
907
908 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
909 drm_mode_remove(connector, mode);
910
911 list_for_each_entry_safe(mode, t, &connector->modes, head)
912 drm_mode_remove(connector, mode);
913
b21e3afe
IM		 914 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
915 connector->connector_type_id);
916
f453ba04 917 drm_mode_object_put(dev, &connector->base);
2abdd313
JN		 918 kfree(connector->name);
919 connector->name = NULL;
f453ba04 920 list_del(&connector->head);
6380c509 921 dev->mode_config.num_connector--;
f453ba04
DA		 922}
923EXPORT_SYMBOL(drm_connector_cleanup);
924
10f637bf
DV		 925/**
926 * drm_connector_index - find the index of a registered connector
927 * @connector: connector to find index for
928 *
929 * Given a registered connector, return the index of that connector within a DRM
930 * device's list of connectors.
931 */
932unsigned int drm_connector_index(struct drm_connector *connector)
933{
934 unsigned int index = 0;
935 struct drm_connector *tmp;
936
937 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
938 if (tmp == connector)
939 return index;
940
941 index++;
942 }
943
944 BUG();
945}
946EXPORT_SYMBOL(drm_connector_index);
947
34ea3d38
TW		 948/**
949 * drm_connector_register - register a connector
950 * @connector: the connector to register
951 *
952 * Register userspace interfaces for a connector
953 *
954 * Returns:
955 * Zero on success, error code on failure.
956 */
957int drm_connector_register(struct drm_connector *connector)
958{
30f65707
TW		 959 int ret;
960
2ee39452
DA		 961 drm_mode_object_register(connector->dev, &connector->base);
962
30f65707
TW		 963 ret = drm_sysfs_connector_add(connector);
964 if (ret)
965 return ret;
966
967 ret = drm_debugfs_connector_add(connector);
968 if (ret) {
969 drm_sysfs_connector_remove(connector);
970 return ret;
971 }
972
973 return 0;
34ea3d38
TW		 974}
975EXPORT_SYMBOL(drm_connector_register);
976
977/**
978 * drm_connector_unregister - unregister a connector
979 * @connector: the connector to unregister
980 *
981 * Unregister userspace interfaces for a connector
982 */
983void drm_connector_unregister(struct drm_connector *connector)
984{
985 drm_sysfs_connector_remove(connector);
30f65707 986 drm_debugfs_connector_remove(connector);
34ea3d38
TW		 987}
988EXPORT_SYMBOL(drm_connector_unregister);
989
990
c8e32cc1
DV		 991/**
992 * drm_connector_unplug_all - unregister connector userspace interfaces
993 * @dev: drm device
994 *
995 * This function unregisters all connector userspace interfaces in sysfs. Should
996 * be call when the device is disconnected, e.g. from an usb driver's
997 * ->disconnect callback.
998 */
cbc7e221
DA		 999void drm_connector_unplug_all(struct drm_device *dev)
1000{
1001 struct drm_connector *connector;
1002
1003 /* taking the mode config mutex ends up in a clash with sysfs */
1004 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
34ea3d38 1005 drm_connector_unregister(connector);
cbc7e221
DA		 1006
1007}
1008EXPORT_SYMBOL(drm_connector_unplug_all);
1009
c8e32cc1
DV		 1010/**
1011 * drm_bridge_init - initialize a drm transcoder/bridge
1012 * @dev: drm device
1013 * @bridge: transcoder/bridge to set up
1014 * @funcs: bridge function table
1015 *
1016 * Initialises a preallocated bridge. Bridges should be
1017 * subclassed as part of driver connector objects.
1018 *
1019 * Returns:
1020 * Zero on success, error code on failure.
1021 */
3b336ec4
SP		 1022int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1023 const struct drm_bridge_funcs *funcs)
1024{
1025 int ret;
1026
1027 drm_modeset_lock_all(dev);
1028
1029 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1030 if (ret)
1031 goto out;
1032
1033 bridge->dev = dev;
1034 bridge->funcs = funcs;
1035
1036 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1037 dev->mode_config.num_bridge++;
1038
1039 out:
1040 drm_modeset_unlock_all(dev);
1041 return ret;
1042}
1043EXPORT_SYMBOL(drm_bridge_init);
1044
c8e32cc1
DV		 1045/**
1046 * drm_bridge_cleanup - cleans up an initialised bridge
1047 * @bridge: bridge to cleanup
1048 *
1049 * Cleans up the bridge but doesn't free the object.
1050 */
3b336ec4
SP		 1051void drm_bridge_cleanup(struct drm_bridge *bridge)
1052{
1053 struct drm_device *dev = bridge->dev;
1054
1055 drm_modeset_lock_all(dev);
1056 drm_mode_object_put(dev, &bridge->base);
1057 list_del(&bridge->head);
1058 dev->mode_config.num_bridge--;
1059 drm_modeset_unlock_all(dev);
1060}
1061EXPORT_SYMBOL(drm_bridge_cleanup);
1062
c8e32cc1
DV		 1063/**
1064 * drm_encoder_init - Init a preallocated encoder
1065 * @dev: drm device
1066 * @encoder: the encoder to init
1067 * @funcs: callbacks for this encoder
1068 * @encoder_type: user visible type of the encoder
1069 *
1070 * Initialises a preallocated encoder. Encoder should be
1071 * subclassed as part of driver encoder objects.
1072 *
1073 * Returns:
1074 * Zero on success, error code on failure.
1075 */
6bfc56aa 1076int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 1077 struct drm_encoder *encoder,
1078 const struct drm_encoder_funcs *funcs,
1079 int encoder_type)
f453ba04 1080{
6bfc56aa
VS		 1081 int ret;
1082
84849903 1083 drm_modeset_lock_all(dev);
f453ba04 1084
6bfc56aa
VS		 1085 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1086 if (ret)
e5748946 1087 goto out_unlock;
f453ba04 1088
6bfc56aa 1089 encoder->dev = dev;
f453ba04
DA		 1090 encoder->encoder_type = encoder_type;
1091 encoder->funcs = funcs;
e5748946
JN		 1092 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1093 drm_encoder_enum_list[encoder_type].name,
1094 encoder->base.id);
1095 if (!encoder->name) {
1096 ret = -ENOMEM;
1097 goto out_put;
1098 }
f453ba04
DA		 1099
1100 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1101 dev->mode_config.num_encoder++;
1102
e5748946
JN		 1103out_put:
1104 if (ret)
1105 drm_mode_object_put(dev, &encoder->base);
1106
1107out_unlock:
84849903 1108 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 1109
1110 return ret;
f453ba04
DA		 1111}
1112EXPORT_SYMBOL(drm_encoder_init);
1113
c8e32cc1
DV		 1114/**
1115 * drm_encoder_cleanup - cleans up an initialised encoder
1116 * @encoder: encoder to cleanup
1117 *
1118 * Cleans up the encoder but doesn't free the object.
1119 */
f453ba04
DA		 1120void drm_encoder_cleanup(struct drm_encoder *encoder)
1121{
1122 struct drm_device *dev = encoder->dev;
84849903 1123 drm_modeset_lock_all(dev);
f453ba04 1124 drm_mode_object_put(dev, &encoder->base);
e5748946
JN		 1125 kfree(encoder->name);
1126 encoder->name = NULL;
f453ba04 1127 list_del(&encoder->head);
6380c509 1128 dev->mode_config.num_encoder--;
84849903 1129 drm_modeset_unlock_all(dev);
f453ba04
DA		 1130}
1131EXPORT_SYMBOL(drm_encoder_cleanup);
1132
35f2c3ae 1133/**
dc415ff9 1134 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1135 * @dev: DRM device
1136 * @plane: plane object to init
1137 * @possible_crtcs: bitmask of possible CRTCs
1138 * @funcs: callbacks for the new plane
1139 * @formats: array of supported formats (%DRM_FORMAT_*)
1140 * @format_count: number of elements in @formats
dc415ff9 1141 * @type: type of plane (overlay, primary, cursor)
35f2c3ae 1142 *
dc415ff9 1143 * Initializes a plane object of type @type.
35f2c3ae 1144 *
c8e32cc1 1145 * Returns:
35f2c3ae
VS		 1146 * Zero on success, error code on failure.
1147 */
dc415ff9
MR		 1148int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1149 unsigned long possible_crtcs,
1150 const struct drm_plane_funcs *funcs,
1151 const uint32_t *formats, uint32_t format_count,
1152 enum drm_plane_type type)
8cf5c917 1153{
6bfc56aa
VS		 1154 int ret;
1155
84849903 1156 drm_modeset_lock_all(dev);
8cf5c917 1157
6bfc56aa
VS		 1158 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1159 if (ret)
1160 goto out;
1161
4d93914a 1162 plane->base.properties = &plane->properties;
8cf5c917 1163 plane->dev = dev;
8cf5c917
JB		 1164 plane->funcs = funcs;
1165 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1166 GFP_KERNEL);
1167 if (!plane->format_types) {
1168 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1169 drm_mode_object_put(dev, &plane->base);
6bfc56aa
VS		 1170 ret = -ENOMEM;
1171 goto out;
8cf5c917
JB		 1172 }
1173
308e5bcb 1174 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1175 plane->format_count = format_count;
1176 plane->possible_crtcs = possible_crtcs;
dc415ff9 1177 plane->type = type;
8cf5c917 1178
dc415ff9
MR		 1179 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1180 dev->mode_config.num_total_plane++;
1181 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1182 dev->mode_config.num_overlay_plane++;
8cf5c917 1183
9922ab5a
RC		 1184 drm_object_attach_property(&plane->base,
1185 dev->mode_config.plane_type_property,
1186 plane->type);
1187
6bfc56aa 1188 out:
84849903 1189 drm_modeset_unlock_all(dev);
8cf5c917 1190
6bfc56aa 1191 return ret;
8cf5c917 1192}
dc415ff9
MR		 1193EXPORT_SYMBOL(drm_universal_plane_init);
1194
1195/**
1196 * drm_plane_init - Initialize a legacy plane
1197 * @dev: DRM device
1198 * @plane: plane object to init
1199 * @possible_crtcs: bitmask of possible CRTCs
1200 * @funcs: callbacks for the new plane
1201 * @formats: array of supported formats (%DRM_FORMAT_*)
1202 * @format_count: number of elements in @formats
1203 * @is_primary: plane type (primary vs overlay)
1204 *
1205 * Legacy API to initialize a DRM plane.
1206 *
1207 * New drivers should call drm_universal_plane_init() instead.
1208 *
1209 * Returns:
1210 * Zero on success, error code on failure.
1211 */
1212int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1213 unsigned long possible_crtcs,
1214 const struct drm_plane_funcs *funcs,
1215 const uint32_t *formats, uint32_t format_count,
1216 bool is_primary)
1217{
1218 enum drm_plane_type type;
1219
1220 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1221 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1222 formats, format_count, type);
1223}
8cf5c917
JB		 1224EXPORT_SYMBOL(drm_plane_init);
1225
35f2c3ae
VS		 1226/**
1227 * drm_plane_cleanup - Clean up the core plane usage
1228 * @plane: plane to cleanup
1229 *
1230 * This function cleans up @plane and removes it from the DRM mode setting
1231 * core. Note that the function does *not* free the plane structure itself,
1232 * this is the responsibility of the caller.
1233 */
8cf5c917
JB		 1234void drm_plane_cleanup(struct drm_plane *plane)
1235{
1236 struct drm_device *dev = plane->dev;
1237
84849903 1238 drm_modeset_lock_all(dev);
8cf5c917
JB		 1239 kfree(plane->format_types);
1240 drm_mode_object_put(dev, &plane->base);
dc415ff9
MR		 1241
1242 BUG_ON(list_empty(&plane->head));
1243
1244 list_del(&plane->head);
1245 dev->mode_config.num_total_plane--;
1246 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1247 dev->mode_config.num_overlay_plane--;
84849903 1248 drm_modeset_unlock_all(dev);
8cf5c917
JB		 1249}
1250EXPORT_SYMBOL(drm_plane_cleanup);
1251
10f637bf
DV		 1252/**
1253 * drm_plane_index - find the index of a registered plane
1254 * @plane: plane to find index for
1255 *
1256 * Given a registered plane, return the index of that CRTC within a DRM
1257 * device's list of planes.
1258 */
1259unsigned int drm_plane_index(struct drm_plane *plane)
1260{
1261 unsigned int index = 0;
1262 struct drm_plane *tmp;
1263
1264 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1265 if (tmp == plane)
1266 return index;
1267
1268 index++;
1269 }
1270
1271 BUG();
1272}
1273EXPORT_SYMBOL(drm_plane_index);
1274
35f2c3ae
VS		 1275/**
1276 * drm_plane_force_disable - Forcibly disable a plane
1277 * @plane: plane to disable
1278 *
1279 * Forces the plane to be disabled.
1280 *
1281 * Used when the plane's current framebuffer is destroyed,
1282 * and when restoring fbdev mode.
1283 */
9125e618
VS		 1284void drm_plane_force_disable(struct drm_plane *plane)
1285{
1286 int ret;
1287
3d30a59b 1288 if (!plane->fb)
9125e618
VS		 1289 return;
1290
3d30a59b 1291 plane->old_fb = plane->fb;
9125e618 1292 ret = plane->funcs->disable_plane(plane);
731cce48 1293 if (ret) {
9125e618 1294 DRM_ERROR("failed to disable plane with busy fb\n");
3d30a59b 1295 plane->old_fb = NULL;
731cce48
DV		 1296 return;
1297 }
9125e618 1298 /* disconnect the plane from the fb and crtc: */
3d30a59b
DV		 1299 __drm_framebuffer_unreference(plane->old_fb);
1300 plane->old_fb = NULL;
9125e618
VS		 1301 plane->fb = NULL;
1302 plane->crtc = NULL;
1303}
1304EXPORT_SYMBOL(drm_plane_force_disable);
1305
f453ba04
DA		 1306static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1307{
1308 struct drm_property *edid;
1309 struct drm_property *dpms;
43aba7eb 1310 struct drm_property *dev_path;
f453ba04
DA		 1311
1312 /*
1313 * Standard properties (apply to all connectors)
1314 */
1315 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1316 DRM_MODE_PROP_IMMUTABLE,
1317 "EDID", 0);
1318 dev->mode_config.edid_property = edid;
1319
4a67d391
SH		 1320 dpms = drm_property_create_enum(dev, 0,
1321 "DPMS", drm_dpms_enum_list,
1322 ARRAY_SIZE(drm_dpms_enum_list));
f453ba04
DA		 1323 dev->mode_config.dpms_property = dpms;
1324
43aba7eb
DA		 1325 dev_path = drm_property_create(dev,
1326 DRM_MODE_PROP_BLOB |
1327 DRM_MODE_PROP_IMMUTABLE,
1328 "PATH", 0);
1329 dev->mode_config.path_property = dev_path;
1330
f453ba04
DA		 1331 return 0;
1332}
1333
9922ab5a
RC		 1334static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1335{
1336 struct drm_property *type;
1337
1338 /*
1339 * Standard properties (apply to all planes)
1340 */
1341 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1342 "type", drm_plane_type_enum_list,
1343 ARRAY_SIZE(drm_plane_type_enum_list));
1344 dev->mode_config.plane_type_property = type;
1345
1346 return 0;
1347}
1348
f453ba04
DA		 1349/**
1350 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1351 * @dev: DRM device
1352 *
1353 * Called by a driver the first time a DVI-I connector is made.
1354 */
1355int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1356{
1357 struct drm_property *dvi_i_selector;
1358 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1359
1360 if (dev->mode_config.dvi_i_select_subconnector_property)
1361 return 0;
1362
1363 dvi_i_selector =
4a67d391 1364 drm_property_create_enum(dev, 0,
f453ba04 1365 "select subconnector",
4a67d391 1366 drm_dvi_i_select_enum_list,
f453ba04 1367 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1368 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1369
4a67d391 1370 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1371 "subconnector",
4a67d391 1372 drm_dvi_i_subconnector_enum_list,
f453ba04 1373 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1374 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1375
1376 return 0;
1377}
1378EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1379
1380/**
1381 * drm_create_tv_properties - create TV specific connector properties
1382 * @dev: DRM device
1383 * @num_modes: number of different TV formats (modes) supported
1384 * @modes: array of pointers to strings containing name of each format
1385 *
1386 * Called by a driver's TV initialization routine, this function creates
1387 * the TV specific connector properties for a given device. Caller is
1388 * responsible for allocating a list of format names and passing them to
1389 * this routine.
1390 */
1391int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1392 char *modes[])
1393{
1394 struct drm_property *tv_selector;
1395 struct drm_property *tv_subconnector;
1396 int i;
1397
1398 if (dev->mode_config.tv_select_subconnector_property)
1399 return 0;
1400
1401 /*
1402 * Basic connector properties
1403 */
4a67d391 1404 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1405 "select subconnector",
4a67d391 1406 drm_tv_select_enum_list,
f453ba04 1407 ARRAY_SIZE(drm_tv_select_enum_list));
f453ba04
DA		 1408 dev->mode_config.tv_select_subconnector_property = tv_selector;
1409
1410 tv_subconnector =
4a67d391
SH		 1411 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1412 "subconnector",
1413 drm_tv_subconnector_enum_list,
f453ba04 1414 ARRAY_SIZE(drm_tv_subconnector_enum_list));
f453ba04
DA		 1415 dev->mode_config.tv_subconnector_property = tv_subconnector;
1416
1417 /*
1418 * Other, TV specific properties: margins & TV modes.
1419 */
1420 dev->mode_config.tv_left_margin_property =
d9bc3c02 1421 drm_property_create_range(dev, 0, "left margin", 0, 100);
f453ba04
DA		 1422
1423 dev->mode_config.tv_right_margin_property =
d9bc3c02 1424 drm_property_create_range(dev, 0, "right margin", 0, 100);
f453ba04
DA		 1425
1426 dev->mode_config.tv_top_margin_property =
d9bc3c02 1427 drm_property_create_range(dev, 0, "top margin", 0, 100);
f453ba04
DA		 1428
1429 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1430 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
f453ba04
DA		 1431
1432 dev->mode_config.tv_mode_property =
1433 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1434 "mode", num_modes);
1435 for (i = 0; i < num_modes; i++)
1436 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1437 i, modes[i]);
1438
b6b7902e 1439 dev->mode_config.tv_brightness_property =
d9bc3c02 1440 drm_property_create_range(dev, 0, "brightness", 0, 100);
b6b7902e
FJ		 1441
1442 dev->mode_config.tv_contrast_property =
d9bc3c02 1443 drm_property_create_range(dev, 0, "contrast", 0, 100);
b6b7902e
FJ		 1444
1445 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1446 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
b6b7902e 1447
a75f0236 1448 dev->mode_config.tv_overscan_property =
d9bc3c02 1449 drm_property_create_range(dev, 0, "overscan", 0, 100);
a75f0236
FJ		 1450
1451 dev->mode_config.tv_saturation_property =
d9bc3c02 1452 drm_property_create_range(dev, 0, "saturation", 0, 100);
a75f0236
FJ		 1453
1454 dev->mode_config.tv_hue_property =
d9bc3c02 1455 drm_property_create_range(dev, 0, "hue", 0, 100);
a75f0236 1456
f453ba04
DA		 1457 return 0;
1458}
1459EXPORT_SYMBOL(drm_mode_create_tv_properties);
1460
1461/**
1462 * drm_mode_create_scaling_mode_property - create scaling mode property
1463 * @dev: DRM device
1464 *
1465 * Called by a driver the first time it's needed, must be attached to desired
1466 * connectors.
1467 */
1468int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1469{
1470 struct drm_property *scaling_mode;
f453ba04
DA		 1471
1472 if (dev->mode_config.scaling_mode_property)
1473 return 0;
1474
1475 scaling_mode =
4a67d391
SH		 1476 drm_property_create_enum(dev, 0, "scaling mode",
1477 drm_scaling_mode_enum_list,
f453ba04 1478 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1479
1480 dev->mode_config.scaling_mode_property = scaling_mode;
1481
1482 return 0;
1483}
1484EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1485
ff587e45
VK		 1486/**
1487 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1488 * @dev: DRM device
1489 *
1490 * Called by a driver the first time it's needed, must be attached to desired
1491 * connectors.
1492 *
1493 * Returns:
1494 * Zero on success, errno on failure.
1495 */
1496int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1497{
1498 if (dev->mode_config.aspect_ratio_property)
1499 return 0;
1500
1501 dev->mode_config.aspect_ratio_property =
1502 drm_property_create_enum(dev, 0, "aspect ratio",
1503 drm_aspect_ratio_enum_list,
1504 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1505
1506 if (dev->mode_config.aspect_ratio_property == NULL)
1507 return -ENOMEM;
1508
1509 return 0;
1510}
1511EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1512
884840aa
JB		 1513/**
1514 * drm_mode_create_dirty_property - create dirty property
1515 * @dev: DRM device
1516 *
1517 * Called by a driver the first time it's needed, must be attached to desired
1518 * connectors.
1519 */
1520int drm_mode_create_dirty_info_property(struct drm_device *dev)
1521{
1522 struct drm_property *dirty_info;
884840aa
JB		 1523
1524 if (dev->mode_config.dirty_info_property)
1525 return 0;
1526
1527 dirty_info =
4a67d391 1528 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1529 "dirty",
4a67d391 1530 drm_dirty_info_enum_list,
884840aa 1531 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1532 dev->mode_config.dirty_info_property = dirty_info;
1533
1534 return 0;
1535}
1536EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1537
ea9cbb06 1538static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
f453ba04
DA		 1539{
1540 uint32_t total_objects = 0;
1541
1542 total_objects += dev->mode_config.num_crtc;
1543 total_objects += dev->mode_config.num_connector;
1544 total_objects += dev->mode_config.num_encoder;
3b336ec4 1545 total_objects += dev->mode_config.num_bridge;
f453ba04 1546
f453ba04
DA		 1547 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1548 if (!group->id_list)
1549 return -ENOMEM;
1550
1551 group->num_crtcs = 0;
1552 group->num_connectors = 0;
1553 group->num_encoders = 0;
3b336ec4 1554 group->num_bridges = 0;
f453ba04
DA		 1555 return 0;
1556}
1557
ad222799
DA		 1558void drm_mode_group_destroy(struct drm_mode_group *group)
1559{
1560 kfree(group->id_list);
1561 group->id_list = NULL;
1562}
1563
c8e32cc1
DV		 1564/*
1565 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1566 * the drm core's responsibility to set up mode control groups.
1567 */
f453ba04
DA		 1568int drm_mode_group_init_legacy_group(struct drm_device *dev,
1569 struct drm_mode_group *group)
1570{
1571 struct drm_crtc *crtc;
1572 struct drm_encoder *encoder;
1573 struct drm_connector *connector;
3b336ec4 1574 struct drm_bridge *bridge;
f453ba04
DA		 1575 int ret;
1576
1577 if ((ret = drm_mode_group_init(dev, group)))
1578 return ret;
1579
1580 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1581 group->id_list[group->num_crtcs++] = crtc->base.id;
1582
1583 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1584 group->id_list[group->num_crtcs + group->num_encoders++] =
1585 encoder->base.id;
1586
1587 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1588 group->id_list[group->num_crtcs + group->num_encoders +
1589 group->num_connectors++] = connector->base.id;
1590
3b336ec4
SP		 1591 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1592 group->id_list[group->num_crtcs + group->num_encoders +
1593 group->num_connectors + group->num_bridges++] =
1594 bridge->base.id;
1595
f453ba04
DA		 1596 return 0;
1597}
9c1dfc55 1598EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
f453ba04 1599
2390cd11
DA		 1600void drm_reinit_primary_mode_group(struct drm_device *dev)
1601{
1602 drm_modeset_lock_all(dev);
1603 drm_mode_group_destroy(&dev->primary->mode_group);
1604 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1605 drm_modeset_unlock_all(dev);
1606}
1607EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1608
f453ba04
DA		 1609/**
1610 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1611 * @out: drm_mode_modeinfo struct to return to the user
1612 * @in: drm_display_mode to use
1613 *
f453ba04
DA		 1614 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1615 * the user.
1616 */
93bbf6db
VS		 1617static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1618 const struct drm_display_mode *in)
f453ba04 1619{
e36fae38
VS		 1620 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1621 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1622 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1623 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1624 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1625 "timing values too large for mode info\n");
1626
f453ba04
DA		 1627 out->clock = in->clock;
1628 out->hdisplay = in->hdisplay;
1629 out->hsync_start = in->hsync_start;
1630 out->hsync_end = in->hsync_end;
1631 out->htotal = in->htotal;
1632 out->hskew = in->hskew;
1633 out->vdisplay = in->vdisplay;
1634 out->vsync_start = in->vsync_start;
1635 out->vsync_end = in->vsync_end;
1636 out->vtotal = in->vtotal;
1637 out->vscan = in->vscan;
1638 out->vrefresh = in->vrefresh;
1639 out->flags = in->flags;
1640 out->type = in->type;
1641 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1642 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1643}
1644
1645/**
74afee7d 1646 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
f453ba04
DA		 1647 * @out: drm_display_mode to return to the user
1648 * @in: drm_mode_modeinfo to use
1649 *
f453ba04
DA		 1650 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1651 * the caller.
90367bf6 1652 *
c8e32cc1 1653 * Returns:
90367bf6 1654 * Zero on success, errno on failure.
f453ba04 1655 */
93bbf6db
VS		 1656static int drm_crtc_convert_umode(struct drm_display_mode *out,
1657 const struct drm_mode_modeinfo *in)
f453ba04 1658{
90367bf6
VS		 1659 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1660 return -ERANGE;
1661
5848ad40
DL		 1662 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1663 return -EINVAL;
1664
f453ba04
DA		 1665 out->clock = in->clock;
1666 out->hdisplay = in->hdisplay;
1667 out->hsync_start = in->hsync_start;
1668 out->hsync_end = in->hsync_end;
1669 out->htotal = in->htotal;
1670 out->hskew = in->hskew;
1671 out->vdisplay = in->vdisplay;
1672 out->vsync_start = in->vsync_start;
1673 out->vsync_end = in->vsync_end;
1674 out->vtotal = in->vtotal;
1675 out->vscan = in->vscan;
1676 out->vrefresh = in->vrefresh;
1677 out->flags = in->flags;
1678 out->type = in->type;
1679 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1680 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
90367bf6
VS		 1681
1682 return 0;
f453ba04
DA		 1683}
1684
1685/**
1686 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1687 * @dev: drm device for the ioctl
1688 * @data: data pointer for the ioctl
1689 * @file_priv: drm file for the ioctl call
f453ba04 1690 *
f453ba04
DA		 1691 * Construct a set of configuration description structures and return
1692 * them to the user, including CRTC, connector and framebuffer configuration.
1693 *
1694 * Called by the user via ioctl.
1695 *
c8e32cc1 1696 * Returns:
f453ba04
DA		 1697 * Zero on success, errno on failure.
1698 */
1699int drm_mode_getresources(struct drm_device *dev, void *data,
1700 struct drm_file *file_priv)
1701{
1702 struct drm_mode_card_res *card_res = data;
1703 struct list_head *lh;
1704 struct drm_framebuffer *fb;
1705 struct drm_connector *connector;
1706 struct drm_crtc *crtc;
1707 struct drm_encoder *encoder;
1708 int ret = 0;
1709 int connector_count = 0;
1710 int crtc_count = 0;
1711 int fb_count = 0;
1712 int encoder_count = 0;
1713 int copied = 0, i;
1714 uint32_t __user *fb_id;
1715 uint32_t __user *crtc_id;
1716 uint32_t __user *connector_id;
1717 uint32_t __user *encoder_id;
1718 struct drm_mode_group *mode_group;
1719
fb3b06c8
DA		 1720 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1721 return -EINVAL;
1722
f453ba04 1723
4b096ac1 1724 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1725 /*
1726 * For the non-control nodes we need to limit the list of resources
1727 * by IDs in the group list for this node
1728 */
1729 list_for_each(lh, &file_priv->fbs)
1730 fb_count++;
1731
4b096ac1
DV		 1732 /* handle this in 4 parts */
1733 /* FBs */
1734 if (card_res->count_fbs >= fb_count) {
1735 copied = 0;
1736 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1737 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1738 if (put_user(fb->base.id, fb_id + copied)) {
1739 mutex_unlock(&file_priv->fbs_lock);
1740 return -EFAULT;
1741 }
1742 copied++;
1743 }
1744 }
1745 card_res->count_fbs = fb_count;
1746 mutex_unlock(&file_priv->fbs_lock);
1747
1748 drm_modeset_lock_all(dev);
43683057 1749 if (!drm_is_primary_client(file_priv)) {
f453ba04 1750
09f308f7 1751 mode_group = NULL;
f453ba04
DA		 1752 list_for_each(lh, &dev->mode_config.crtc_list)
1753 crtc_count++;
1754
1755 list_for_each(lh, &dev->mode_config.connector_list)
1756 connector_count++;
1757
1758 list_for_each(lh, &dev->mode_config.encoder_list)
1759 encoder_count++;
1760 } else {
1761
09f308f7 1762 mode_group = &file_priv->master->minor->mode_group;
f453ba04
DA		 1763 crtc_count = mode_group->num_crtcs;
1764 connector_count = mode_group->num_connectors;
1765 encoder_count = mode_group->num_encoders;
1766 }
1767
1768 card_res->max_height = dev->mode_config.max_height;
1769 card_res->min_height = dev->mode_config.min_height;
1770 card_res->max_width = dev->mode_config.max_width;
1771 card_res->min_width = dev->mode_config.min_width;
1772
f453ba04
DA		 1773 /* CRTCs */
1774 if (card_res->count_crtcs >= crtc_count) {
1775 copied = 0;
1776 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
09f308f7 1777 if (!mode_group) {
f453ba04
DA		 1778 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1779 head) {
9440106b 1780 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1781 if (put_user(crtc->base.id, crtc_id + copied)) {
1782 ret = -EFAULT;
1783 goto out;
1784 }
1785 copied++;
1786 }
1787 } else {
1788 for (i = 0; i < mode_group->num_crtcs; i++) {
1789 if (put_user(mode_group->id_list[i],
1790 crtc_id + copied)) {
1791 ret = -EFAULT;
1792 goto out;
1793 }
1794 copied++;
1795 }
1796 }
1797 }
1798 card_res->count_crtcs = crtc_count;
1799
1800 /* Encoders */
1801 if (card_res->count_encoders >= encoder_count) {
1802 copied = 0;
1803 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
09f308f7 1804 if (!mode_group) {
f453ba04
DA		 1805 list_for_each_entry(encoder,
1806 &dev->mode_config.encoder_list,
1807 head) {
9440106b 1808 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
83a8cfd3 1809 encoder->name);
f453ba04
DA		 1810 if (put_user(encoder->base.id, encoder_id +
1811 copied)) {
1812 ret = -EFAULT;
1813 goto out;
1814 }
1815 copied++;
1816 }
1817 } else {
1818 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1819 if (put_user(mode_group->id_list[i],
1820 encoder_id + copied)) {
1821 ret = -EFAULT;
1822 goto out;
1823 }
1824 copied++;
1825 }
1826
1827 }
1828 }
1829 card_res->count_encoders = encoder_count;
1830
1831 /* Connectors */
1832 if (card_res->count_connectors >= connector_count) {
1833 copied = 0;
1834 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
09f308f7 1835 if (!mode_group) {
f453ba04
DA		 1836 list_for_each_entry(connector,
1837 &dev->mode_config.connector_list,
1838 head) {
9440106b
JG		 1839 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1840 connector->base.id,
25933820 1841 connector->name);
f453ba04
DA		 1842 if (put_user(connector->base.id,
1843 connector_id + copied)) {
1844 ret = -EFAULT;
1845 goto out;
1846 }
1847 copied++;
1848 }
1849 } else {
1850 int start = mode_group->num_crtcs +
1851 mode_group->num_encoders;
1852 for (i = start; i < start + mode_group->num_connectors; i++) {
1853 if (put_user(mode_group->id_list[i],
1854 connector_id + copied)) {
1855 ret = -EFAULT;
1856 goto out;
1857 }
1858 copied++;
1859 }
1860 }
1861 }
1862 card_res->count_connectors = connector_count;
1863
9440106b 1864 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1865 card_res->count_connectors, card_res->count_encoders);
1866
1867out:
84849903 1868 drm_modeset_unlock_all(dev);
f453ba04
DA		 1869 return ret;
1870}
1871
1872/**
1873 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1874 * @dev: drm device for the ioctl
1875 * @data: data pointer for the ioctl
1876 * @file_priv: drm file for the ioctl call
f453ba04 1877 *
f453ba04
DA		 1878 * Construct a CRTC configuration structure to return to the user.
1879 *
1880 * Called by the user via ioctl.
1881 *
c8e32cc1 1882 * Returns:
f453ba04
DA		 1883 * Zero on success, errno on failure.
1884 */
1885int drm_mode_getcrtc(struct drm_device *dev,
1886 void *data, struct drm_file *file_priv)
1887{
1888 struct drm_mode_crtc *crtc_resp = data;
1889 struct drm_crtc *crtc;
f453ba04
DA		 1890 int ret = 0;
1891
fb3b06c8
DA		 1892 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1893 return -EINVAL;
1894
84849903 1895 drm_modeset_lock_all(dev);
f453ba04 1896
a2b34e22
RC		 1897 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1898 if (!crtc) {
f27657f2 1899 ret = -ENOENT;
f453ba04
DA		 1900 goto out;
1901 }
f453ba04
DA		 1902
1903 crtc_resp->x = crtc->x;
1904 crtc_resp->y = crtc->y;
1905 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 1906 if (crtc->primary->fb)
1907 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 1908 else
1909 crtc_resp->fb_id = 0;
1910
1911 if (crtc->enabled) {
1912
1913 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1914 crtc_resp->mode_valid = 1;
1915
1916 } else {
1917 crtc_resp->mode_valid = 0;
1918 }
1919
1920out:
84849903 1921 drm_modeset_unlock_all(dev);
f453ba04
DA		 1922 return ret;
1923}
1924
61d8e328
DL		 1925static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1926 const struct drm_file *file_priv)
1927{
1928 /*
1929 * If user-space hasn't configured the driver to expose the stereo 3D
1930 * modes, don't expose them.
1931 */
1932 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1933 return false;
1934
1935 return true;
1936}
1937
f453ba04
DA		 1938/**
1939 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 1940 * @dev: drm device for the ioctl
1941 * @data: data pointer for the ioctl
1942 * @file_priv: drm file for the ioctl call
f453ba04 1943 *
f453ba04
DA		 1944 * Construct a connector configuration structure to return to the user.
1945 *
1946 * Called by the user via ioctl.
1947 *
c8e32cc1 1948 * Returns:
f453ba04
DA		 1949 * Zero on success, errno on failure.
1950 */
1951int drm_mode_getconnector(struct drm_device *dev, void *data,
1952 struct drm_file *file_priv)
1953{
1954 struct drm_mode_get_connector *out_resp = data;
f453ba04
DA		 1955 struct drm_connector *connector;
1956 struct drm_display_mode *mode;
1957 int mode_count = 0;
1958 int props_count = 0;
1959 int encoders_count = 0;
1960 int ret = 0;
1961 int copied = 0;
1962 int i;
1963 struct drm_mode_modeinfo u_mode;
1964 struct drm_mode_modeinfo __user *mode_ptr;
1965 uint32_t __user *prop_ptr;
1966 uint64_t __user *prop_values;
1967 uint32_t __user *encoder_ptr;
1968
fb3b06c8
DA		 1969 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1970 return -EINVAL;
1971
f453ba04
DA		 1972 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1973
9440106b 1974 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 1975
7b24056b 1976 mutex_lock(&dev->mode_config.mutex);
f453ba04 1977
a2b34e22
RC		 1978 connector = drm_connector_find(dev, out_resp->connector_id);
1979 if (!connector) {
f27657f2 1980 ret = -ENOENT;
f453ba04
DA		 1981 goto out;
1982 }
f453ba04 1983
7f88a9be 1984 props_count = connector->properties.count;
f453ba04
DA		 1985
1986 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1987 if (connector->encoder_ids[i] != 0) {
1988 encoders_count++;
1989 }
1990 }
1991
1992 if (out_resp->count_modes == 0) {
1993 connector->funcs->fill_modes(connector,
1994 dev->mode_config.max_width,
1995 dev->mode_config.max_height);
1996 }
1997
1998 /* delayed so we get modes regardless of pre-fill_modes state */
1999 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 2000 if (drm_mode_expose_to_userspace(mode, file_priv))
2001 mode_count++;
f453ba04
DA		 2002
2003 out_resp->connector_id = connector->base.id;
2004 out_resp->connector_type = connector->connector_type;
2005 out_resp->connector_type_id = connector->connector_type_id;
2006 out_resp->mm_width = connector->display_info.width_mm;
2007 out_resp->mm_height = connector->display_info.height_mm;
2008 out_resp->subpixel = connector->display_info.subpixel_order;
2009 out_resp->connection = connector->status;
832fd395 2010 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
f453ba04
DA		 2011 if (connector->encoder)
2012 out_resp->encoder_id = connector->encoder->base.id;
2013 else
2014 out_resp->encoder_id = 0;
832fd395 2015 drm_modeset_unlock(&dev->mode_config.connection_mutex);
f453ba04
DA		 2016
2017 /*
2018 * This ioctl is called twice, once to determine how much space is
2019 * needed, and the 2nd time to fill it.
2020 */
2021 if ((out_resp->count_modes >= mode_count) && mode_count) {
2022 copied = 0;
81f6c7f8 2023 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 2024 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 2025 if (!drm_mode_expose_to_userspace(mode, file_priv))
2026 continue;
2027
f453ba04
DA		 2028 drm_crtc_convert_to_umode(&u_mode, mode);
2029 if (copy_to_user(mode_ptr + copied,
2030 &u_mode, sizeof(u_mode))) {
2031 ret = -EFAULT;
2032 goto out;
2033 }
2034 copied++;
2035 }
2036 }
2037 out_resp->count_modes = mode_count;
2038
2039 if ((out_resp->count_props >= props_count) && props_count) {
2040 copied = 0;
81f6c7f8
VS		 2041 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2042 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
7f88a9be
PZ		 2043 for (i = 0; i < connector->properties.count; i++) {
2044 if (put_user(connector->properties.ids[i],
2045 prop_ptr + copied)) {
2046 ret = -EFAULT;
2047 goto out;
2048 }
f453ba04 2049
7f88a9be
PZ		 2050 if (put_user(connector->properties.values[i],
2051 prop_values + copied)) {
2052 ret = -EFAULT;
2053 goto out;
f453ba04 2054 }
7f88a9be 2055 copied++;
f453ba04
DA		 2056 }
2057 }
2058 out_resp->count_props = props_count;
2059
2060 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2061 copied = 0;
81f6c7f8 2062 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 2063 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2064 if (connector->encoder_ids[i] != 0) {
2065 if (put_user(connector->encoder_ids[i],
2066 encoder_ptr + copied)) {
2067 ret = -EFAULT;
2068 goto out;
2069 }
2070 copied++;
2071 }
2072 }
2073 }
2074 out_resp->count_encoders = encoders_count;
2075
2076out:
7b24056b
DV		 2077 mutex_unlock(&dev->mode_config.mutex);
2078
f453ba04
DA		 2079 return ret;
2080}
2081
c8e32cc1
DV		 2082/**
2083 * drm_mode_getencoder - get encoder configuration
2084 * @dev: drm device for the ioctl
2085 * @data: data pointer for the ioctl
2086 * @file_priv: drm file for the ioctl call
2087 *
2088 * Construct a encoder configuration structure to return to the user.
2089 *
2090 * Called by the user via ioctl.
2091 *
2092 * Returns:
2093 * Zero on success, errno on failure.
2094 */
f453ba04
DA		 2095int drm_mode_getencoder(struct drm_device *dev, void *data,
2096 struct drm_file *file_priv)
2097{
2098 struct drm_mode_get_encoder *enc_resp = data;
f453ba04
DA		 2099 struct drm_encoder *encoder;
2100 int ret = 0;
2101
fb3b06c8
DA		 2102 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2103 return -EINVAL;
2104
84849903 2105 drm_modeset_lock_all(dev);
a2b34e22
RC		 2106 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2107 if (!encoder) {
f27657f2 2108 ret = -ENOENT;
f453ba04
DA		 2109 goto out;
2110 }
f453ba04
DA		 2111
2112 if (encoder->crtc)
2113 enc_resp->crtc_id = encoder->crtc->base.id;
2114 else
2115 enc_resp->crtc_id = 0;
2116 enc_resp->encoder_type = encoder->encoder_type;
2117 enc_resp->encoder_id = encoder->base.id;
2118 enc_resp->possible_crtcs = encoder->possible_crtcs;
2119 enc_resp->possible_clones = encoder->possible_clones;
2120
2121out:
84849903 2122 drm_modeset_unlock_all(dev);
f453ba04
DA		 2123 return ret;
2124}
2125
8cf5c917 2126/**
c8e32cc1 2127 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 2128 * @dev: DRM device
2129 * @data: ioctl data
2130 * @file_priv: DRM file info
2131 *
c8e32cc1
DV		 2132 * Construct a list of plane ids to return to the user.
2133 *
2134 * Called by the user via ioctl.
2135 *
2136 * Returns:
2137 * Zero on success, errno on failure.
8cf5c917
JB		 2138 */
2139int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 2140 struct drm_file *file_priv)
8cf5c917
JB		 2141{
2142 struct drm_mode_get_plane_res *plane_resp = data;
2143 struct drm_mode_config *config;
2144 struct drm_plane *plane;
2145 uint32_t __user *plane_ptr;
2146 int copied = 0, ret = 0;
681e7ec7 2147 unsigned num_planes;
8cf5c917
JB		 2148
2149 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2150 return -EINVAL;
2151
84849903 2152 drm_modeset_lock_all(dev);
8cf5c917
JB		 2153 config = &dev->mode_config;
2154
681e7ec7
MR		 2155 if (file_priv->universal_planes)
2156 num_planes = config->num_total_plane;
2157 else
2158 num_planes = config->num_overlay_plane;
2159
8cf5c917
JB		 2160 /*
2161 * This ioctl is called twice, once to determine how much space is
2162 * needed, and the 2nd time to fill it.
2163 */
681e7ec7
MR		 2164 if (num_planes &&
2165 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 2166 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917
JB		 2167
2168 list_for_each_entry(plane, &config->plane_list, head) {
681e7ec7
MR		 2169 /*
2170 * Unless userspace set the 'universal planes'
2171 * capability bit, only advertise overlays.
2172 */
2173 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2174 !file_priv->universal_planes)
e27dde3e
MR		 2175 continue;
2176
8cf5c917
JB		 2177 if (put_user(plane->base.id, plane_ptr + copied)) {
2178 ret = -EFAULT;
2179 goto out;
2180 }
2181 copied++;
2182 }
2183 }
681e7ec7 2184 plane_resp->count_planes = num_planes;
8cf5c917
JB		 2185
2186out:
84849903 2187 drm_modeset_unlock_all(dev);
8cf5c917
JB		 2188 return ret;
2189}
2190
2191/**
c8e32cc1 2192 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2193 * @dev: DRM device
2194 * @data: ioctl data
2195 * @file_priv: DRM file info
2196 *
c8e32cc1
DV		 2197 * Construct a plane configuration structure to return to the user.
2198 *
2199 * Called by the user via ioctl.
2200 *
2201 * Returns:
2202 * Zero on success, errno on failure.
8cf5c917
JB		 2203 */
2204int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2205 struct drm_file *file_priv)
8cf5c917
JB		 2206{
2207 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2208 struct drm_plane *plane;
2209 uint32_t __user *format_ptr;
2210 int ret = 0;
2211
2212 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2213 return -EINVAL;
2214
84849903 2215 drm_modeset_lock_all(dev);
a2b34e22
RC		 2216 plane = drm_plane_find(dev, plane_resp->plane_id);
2217 if (!plane) {
8cf5c917
JB		 2218 ret = -ENOENT;
2219 goto out;
2220 }
8cf5c917
JB		 2221
2222 if (plane->crtc)
2223 plane_resp->crtc_id = plane->crtc->base.id;
2224 else
2225 plane_resp->crtc_id = 0;
2226
2227 if (plane->fb)
2228 plane_resp->fb_id = plane->fb->base.id;
2229 else
2230 plane_resp->fb_id = 0;
2231
2232 plane_resp->plane_id = plane->base.id;
2233 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2234 plane_resp->gamma_size = 0;
8cf5c917
JB		 2235
2236 /*
2237 * This ioctl is called twice, once to determine how much space is
2238 * needed, and the 2nd time to fill it.
2239 */
2240 if (plane->format_count &&
2241 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2242 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2243 if (copy_to_user(format_ptr,
2244 plane->format_types,
2245 sizeof(uint32_t) * plane->format_count)) {
2246 ret = -EFAULT;
2247 goto out;
2248 }
2249 }
2250 plane_resp->count_format_types = plane->format_count;
2251
2252out:
84849903 2253 drm_modeset_unlock_all(dev);
8cf5c917
JB		 2254 return ret;
2255}
2256
b36552b3
MR		 2257/*
2258 * setplane_internal - setplane handler for internal callers
8cf5c917 2259 *
b36552b3
MR		 2260 * Note that we assume an extra reference has already been taken on fb. If the
2261 * update fails, this reference will be dropped before return; if it succeeds,
2262 * the previous framebuffer (if any) will be unreferenced instead.
c8e32cc1 2263 *
b36552b3 2264 * src_{x,y,w,h} are provided in 16.16 fixed point format
8cf5c917 2265 */
f2b50c11
DV		 2266static int __setplane_internal(struct drm_plane *plane,
2267 struct drm_crtc *crtc,
2268 struct drm_framebuffer *fb,
2269 int32_t crtc_x, int32_t crtc_y,
2270 uint32_t crtc_w, uint32_t crtc_h,
2271 /* src_{x,y,w,h} values are 16.16 fixed point */
2272 uint32_t src_x, uint32_t src_y,
2273 uint32_t src_w, uint32_t src_h)
8cf5c917 2274{
8cf5c917 2275 int ret = 0;
42ef8789 2276 unsigned int fb_width, fb_height;
62443be6 2277 int i;
8cf5c917 2278
8cf5c917 2279 /* No fb means shut it down */
b36552b3 2280 if (!fb) {
3d30a59b 2281 plane->old_fb = plane->fb;
731cce48
DV		 2282 ret = plane->funcs->disable_plane(plane);
2283 if (!ret) {
2284 plane->crtc = NULL;
2285 plane->fb = NULL;
2286 } else {
3d30a59b 2287 plane->old_fb = NULL;
731cce48 2288 }
8cf5c917
JB		 2289 goto out;
2290 }
2291
7f994f3f
MR		 2292 /* Check whether this plane is usable on this CRTC */
2293 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2294 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2295 ret = -EINVAL;
2296 goto out;
2297 }
2298
62443be6
VS		 2299 /* Check whether this plane supports the fb pixel format. */
2300 for (i = 0; i < plane->format_count; i++)
2301 if (fb->pixel_format == plane->format_types[i])
2302 break;
2303 if (i == plane->format_count) {
6ba6d03e
VS		 2304 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2305 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2306 ret = -EINVAL;
2307 goto out;
2308 }
2309
42ef8789
VS		 2310 fb_width = fb->width << 16;
2311 fb_height = fb->height << 16;
2312
2313 /* Make sure source coordinates are inside the fb. */
b36552b3
MR		 2314 if (src_w > fb_width ||
2315 src_x > fb_width - src_w ||
2316 src_h > fb_height ||
2317 src_y > fb_height - src_h) {
42ef8789
VS		 2318 DRM_DEBUG_KMS("Invalid source coordinates "
2319 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
b36552b3
MR		 2320 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2321 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2322 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2323 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
42ef8789
VS		 2324 ret = -ENOSPC;
2325 goto out;
2326 }
2327
3d30a59b 2328 plane->old_fb = plane->fb;
8cf5c917 2329 ret = plane->funcs->update_plane(plane, crtc, fb,
b36552b3
MR		 2330 crtc_x, crtc_y, crtc_w, crtc_h,
2331 src_x, src_y, src_w, src_h);
8cf5c917
JB		 2332 if (!ret) {
2333 plane->crtc = crtc;
2334 plane->fb = fb;
35f8badc 2335 fb = NULL;
0fe27f06 2336 } else {
3d30a59b 2337 plane->old_fb = NULL;
8cf5c917
JB		 2338 }
2339
2340out:
6c2a7532
DV		 2341 if (fb)
2342 drm_framebuffer_unreference(fb);
3d30a59b
DV		 2343 if (plane->old_fb)
2344 drm_framebuffer_unreference(plane->old_fb);
2345 plane->old_fb = NULL;
8cf5c917
JB		 2346
2347 return ret;
f2b50c11 2348}
b36552b3 2349
f2b50c11
DV		 2350static int setplane_internal(struct drm_plane *plane,
2351 struct drm_crtc *crtc,
2352 struct drm_framebuffer *fb,
2353 int32_t crtc_x, int32_t crtc_y,
2354 uint32_t crtc_w, uint32_t crtc_h,
2355 /* src_{x,y,w,h} values are 16.16 fixed point */
2356 uint32_t src_x, uint32_t src_y,
2357 uint32_t src_w, uint32_t src_h)
2358{
2359 int ret;
2360
2361 drm_modeset_lock_all(plane->dev);
2362 ret = __setplane_internal(plane, crtc, fb,
2363 crtc_x, crtc_y, crtc_w, crtc_h,
2364 src_x, src_y, src_w, src_h);
2365 drm_modeset_unlock_all(plane->dev);
2366
2367 return ret;
b36552b3
MR		 2368}
2369
2370/**
2371 * drm_mode_setplane - configure a plane's configuration
2372 * @dev: DRM device
2373 * @data: ioctl data*
2374 * @file_priv: DRM file info
2375 *
2376 * Set plane configuration, including placement, fb, scaling, and other factors.
2377 * Or pass a NULL fb to disable (planes may be disabled without providing a
2378 * valid crtc).
2379 *
2380 * Returns:
2381 * Zero on success, errno on failure.
2382 */
2383int drm_mode_setplane(struct drm_device *dev, void *data,
2384 struct drm_file *file_priv)
2385{
2386 struct drm_mode_set_plane *plane_req = data;
2387 struct drm_mode_object *obj;
2388 struct drm_plane *plane;
2389 struct drm_crtc *crtc = NULL;
2390 struct drm_framebuffer *fb = NULL;
2391
2392 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2393 return -EINVAL;
2394
2395 /* Give drivers some help against integer overflows */
2396 if (plane_req->crtc_w > INT_MAX ||
2397 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2398 plane_req->crtc_h > INT_MAX ||
2399 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2400 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2401 plane_req->crtc_w, plane_req->crtc_h,
2402 plane_req->crtc_x, plane_req->crtc_y);
2403 return -ERANGE;
2404 }
2405
2406 /*
2407 * First, find the plane, crtc, and fb objects. If not available,
2408 * we don't bother to call the driver.
2409 */
2410 obj = drm_mode_object_find(dev, plane_req->plane_id,
2411 DRM_MODE_OBJECT_PLANE);
2412 if (!obj) {
2413 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2414 plane_req->plane_id);
2415 return -ENOENT;
2416 }
2417 plane = obj_to_plane(obj);
2418
2419 if (plane_req->fb_id) {
2420 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2421 if (!fb) {
2422 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2423 plane_req->fb_id);
2424 return -ENOENT;
2425 }
2426
2427 obj = drm_mode_object_find(dev, plane_req->crtc_id,
2428 DRM_MODE_OBJECT_CRTC);
2429 if (!obj) {
2430 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2431 plane_req->crtc_id);
2432 return -ENOENT;
2433 }
2434 crtc = obj_to_crtc(obj);
2435 }
2436
161d0dc1
MR		 2437 /*
2438 * setplane_internal will take care of deref'ing either the old or new
2439 * framebuffer depending on success.
2440 */
17cfd91f 2441 return setplane_internal(plane, crtc, fb,
b36552b3
MR		 2442 plane_req->crtc_x, plane_req->crtc_y,
2443 plane_req->crtc_w, plane_req->crtc_h,
2444 plane_req->src_x, plane_req->src_y,
2445 plane_req->src_w, plane_req->src_h);
8cf5c917
JB		 2446}
2447
2d13b679
DV		 2448/**
2449 * drm_mode_set_config_internal - helper to call ->set_config
2450 * @set: modeset config to set
2451 *
2452 * This is a little helper to wrap internal calls to the ->set_config driver
2453 * interface. The only thing it adds is correct refcounting dance.
c8e32cc1
DV		 2454 *
2455 * Returns:
2456 * Zero on success, errno on failure.
2d13b679
DV		 2457 */
2458int drm_mode_set_config_internal(struct drm_mode_set *set)
2459{
2460 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2461 struct drm_framebuffer *fb;
2462 struct drm_crtc *tmp;
b0d12325
DV		 2463 int ret;
2464
5cef29aa
DV		 2465 /*
2466 * NOTE: ->set_config can also disable other crtcs (if we steal all
2467 * connectors from it), hence we need to refcount the fbs across all
2468 * crtcs. Atomic modeset will have saner semantics ...
2469 */
2470 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
3d30a59b 2471 tmp->primary->old_fb = tmp->primary->fb;
5cef29aa 2472
b0d12325 2473 fb = set->fb;
2d13b679 2474
b0d12325
DV		 2475 ret = crtc->funcs->set_config(set);
2476 if (ret == 0) {
e13161af 2477 crtc->primary->crtc = crtc;
0fe27f06 2478 crtc->primary->fb = fb;
5cef29aa 2479 }
cc85e121 2480
5cef29aa 2481 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
f4510a27
MR		 2482 if (tmp->primary->fb)
2483 drm_framebuffer_reference(tmp->primary->fb);
3d30a59b
DV		 2484 if (tmp->primary->old_fb)
2485 drm_framebuffer_unreference(tmp->primary->old_fb);
2486 tmp->primary->old_fb = NULL;
b0d12325
DV		 2487 }
2488
2489 return ret;
2d13b679
DV		 2490}
2491EXPORT_SYMBOL(drm_mode_set_config_internal);
2492
af93629d
MR		 2493/**
2494 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2495 * CRTC viewport
2496 * @crtc: CRTC that framebuffer will be displayed on
2497 * @x: x panning
2498 * @y: y panning
2499 * @mode: mode that framebuffer will be displayed under
2500 * @fb: framebuffer to check size of
c11e9283 2501 */
af93629d
MR		 2502int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2503 int x, int y,
2504 const struct drm_display_mode *mode,
2505 const struct drm_framebuffer *fb)
c11e9283
DL		 2506
2507{
2508 int hdisplay, vdisplay;
2509
2510 hdisplay = mode->hdisplay;
2511 vdisplay = mode->vdisplay;
2512
a0c1bbb0
DL		 2513 if (drm_mode_is_stereo(mode)) {
2514 struct drm_display_mode adjusted = *mode;
2515
2516 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2517 hdisplay = adjusted.crtc_hdisplay;
2518 vdisplay = adjusted.crtc_vdisplay;
2519 }
2520
c11e9283
DL		 2521 if (crtc->invert_dimensions)
2522 swap(hdisplay, vdisplay);
2523
2524 if (hdisplay > fb->width ||
2525 vdisplay > fb->height ||
2526 x > fb->width - hdisplay ||
2527 y > fb->height - vdisplay) {
2528 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2529 fb->width, fb->height, hdisplay, vdisplay, x, y,
2530 crtc->invert_dimensions ? " (inverted)" : "");
2531 return -ENOSPC;
2532 }
2533
2534 return 0;
2535}
af93629d 2536EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2537
f453ba04
DA		 2538/**
2539 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2540 * @dev: drm device for the ioctl
2541 * @data: data pointer for the ioctl
2542 * @file_priv: drm file for the ioctl call
f453ba04 2543 *
f453ba04
DA		 2544 * Build a new CRTC configuration based on user request.
2545 *
2546 * Called by the user via ioctl.
2547 *
c8e32cc1 2548 * Returns:
f453ba04
DA		 2549 * Zero on success, errno on failure.
2550 */
2551int drm_mode_setcrtc(struct drm_device *dev, void *data,
2552 struct drm_file *file_priv)
2553{
2554 struct drm_mode_config *config = &dev->mode_config;
2555 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2556 struct drm_crtc *crtc;
f453ba04
DA		 2557 struct drm_connector **connector_set = NULL, *connector;
2558 struct drm_framebuffer *fb = NULL;
2559 struct drm_display_mode *mode = NULL;
2560 struct drm_mode_set set;
2561 uint32_t __user *set_connectors_ptr;
4a1b0714 2562 int ret;
f453ba04
DA		 2563 int i;
2564
fb3b06c8
DA		 2565 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2566 return -EINVAL;
2567
1d97e915
VS		 2568 /* For some reason crtc x/y offsets are signed internally. */
2569 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2570 return -ERANGE;
2571
84849903 2572 drm_modeset_lock_all(dev);
a2b34e22
RC		 2573 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2574 if (!crtc) {
58367ed6 2575 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2576 ret = -ENOENT;
f453ba04
DA		 2577 goto out;
2578 }
9440106b 2579 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 2580
2581 if (crtc_req->mode_valid) {
2582 /* If we have a mode we need a framebuffer. */
2583 /* If we pass -1, set the mode with the currently bound fb */
2584 if (crtc_req->fb_id == -1) {
f4510a27 2585 if (!crtc->primary->fb) {
6653cc8d
VS		 2586 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2587 ret = -EINVAL;
2588 goto out;
f453ba04 2589 }
f4510a27 2590 fb = crtc->primary->fb;
b0d12325
DV		 2591 /* Make refcounting symmetric with the lookup path. */
2592 drm_framebuffer_reference(fb);
f453ba04 2593 } else {
786b99ed
DV		 2594 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2595 if (!fb) {
58367ed6
ZY		 2596 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2597 crtc_req->fb_id);
37c4e705 2598 ret = -ENOENT;
f453ba04
DA		 2599 goto out;
2600 }
f453ba04
DA		 2601 }
2602
2603 mode = drm_mode_create(dev);
ee34ab5b
VS		 2604 if (!mode) {
2605 ret = -ENOMEM;
2606 goto out;
2607 }
2608
90367bf6
VS		 2609 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2610 if (ret) {
2611 DRM_DEBUG_KMS("Invalid mode\n");
2612 goto out;
2613 }
2614
f453ba04 2615 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2616
c11e9283
DL		 2617 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2618 mode, fb);
2619 if (ret)
5f61bb42 2620 goto out;
c11e9283 2621
f453ba04
DA		 2622 }
2623
2624 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2625 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2626 ret = -EINVAL;
2627 goto out;
2628 }
2629
7781de74 2630 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2631 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2632 crtc_req->count_connectors);
2633 ret = -EINVAL;
2634 goto out;
2635 }
2636
2637 if (crtc_req->count_connectors > 0) {
2638 u32 out_id;
2639
2640 /* Avoid unbounded kernel memory allocation */
2641 if (crtc_req->count_connectors > config->num_connector) {
2642 ret = -EINVAL;
2643 goto out;
2644 }
2645
2646 connector_set = kmalloc(crtc_req->count_connectors *
2647 sizeof(struct drm_connector *),
2648 GFP_KERNEL);
2649 if (!connector_set) {
2650 ret = -ENOMEM;
2651 goto out;
2652 }
2653
2654 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2655 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2656 if (get_user(out_id, &set_connectors_ptr[i])) {
2657 ret = -EFAULT;
2658 goto out;
2659 }
2660
a2b34e22
RC		 2661 connector = drm_connector_find(dev, out_id);
2662 if (!connector) {
58367ed6
ZY		 2663 DRM_DEBUG_KMS("Connector id %d unknown\n",
2664 out_id);
f27657f2 2665 ret = -ENOENT;
f453ba04
DA		 2666 goto out;
2667 }
9440106b
JG		 2668 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2669 connector->base.id,
25933820 2670 connector->name);
f453ba04
DA		 2671
2672 connector_set[i] = connector;
2673 }
2674 }
2675
2676 set.crtc = crtc;
2677 set.x = crtc_req->x;
2678 set.y = crtc_req->y;
2679 set.mode = mode;
2680 set.connectors = connector_set;
2681 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2682 set.fb = fb;
2d13b679 2683 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2684
2685out:
b0d12325
DV		 2686 if (fb)
2687 drm_framebuffer_unreference(fb);
2688
f453ba04 2689 kfree(connector_set);
ee34ab5b 2690 drm_mode_destroy(dev, mode);
84849903 2691 drm_modeset_unlock_all(dev);
f453ba04
DA		 2692 return ret;
2693}
2694
161d0dc1
MR		 2695/**
2696 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2697 * universal plane handler call
2698 * @crtc: crtc to update cursor for
2699 * @req: data pointer for the ioctl
2700 * @file_priv: drm file for the ioctl call
2701 *
2702 * Legacy cursor ioctl's work directly with driver buffer handles. To
2703 * translate legacy ioctl calls into universal plane handler calls, we need to
2704 * wrap the native buffer handle in a drm_framebuffer.
2705 *
2706 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2707 * buffer with a pitch of 4*width; the universal plane interface should be used
2708 * directly in cases where the hardware can support other buffer settings and
2709 * userspace wants to make use of these capabilities.
2710 *
2711 * Returns:
2712 * Zero on success, errno on failure.
2713 */
2714static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2715 struct drm_mode_cursor2 *req,
2716 struct drm_file *file_priv)
2717{
2718 struct drm_device *dev = crtc->dev;
2719 struct drm_framebuffer *fb = NULL;
2720 struct drm_mode_fb_cmd2 fbreq = {
2721 .width = req->width,
2722 .height = req->height,
2723 .pixel_format = DRM_FORMAT_ARGB8888,
2724 .pitches = { req->width * 4 },
2725 .handles = { req->handle },
2726 };
2727 int32_t crtc_x, crtc_y;
2728 uint32_t crtc_w = 0, crtc_h = 0;
2729 uint32_t src_w = 0, src_h = 0;
2730 int ret = 0;
2731
2732 BUG_ON(!crtc->cursor);
f2b50c11 2733 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
161d0dc1
MR		 2734
2735 /*
2736 * Obtain fb we'll be using (either new or existing) and take an extra
2737 * reference to it if fb != null. setplane will take care of dropping
2738 * the reference if the plane update fails.
2739 */
2740 if (req->flags & DRM_MODE_CURSOR_BO) {
2741 if (req->handle) {
2742 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2743 if (IS_ERR(fb)) {
2744 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2745 return PTR_ERR(fb);
2746 }
2747
2748 drm_framebuffer_reference(fb);
2749 } else {
2750 fb = NULL;
2751 }
2752 } else {
161d0dc1
MR		 2753 fb = crtc->cursor->fb;
2754 if (fb)
2755 drm_framebuffer_reference(fb);
161d0dc1
MR		 2756 }
2757
2758 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2759 crtc_x = req->x;
2760 crtc_y = req->y;
2761 } else {
2762 crtc_x = crtc->cursor_x;
2763 crtc_y = crtc->cursor_y;
2764 }
2765
2766 if (fb) {
2767 crtc_w = fb->width;
2768 crtc_h = fb->height;
2769 src_w = fb->width << 16;
2770 src_h = fb->height << 16;
2771 }
2772
2773 /*
2774 * setplane_internal will take care of deref'ing either the old or new
2775 * framebuffer depending on success.
2776 */
f2b50c11 2777 ret = __setplane_internal(crtc->cursor, crtc, fb,
161d0dc1
MR		 2778 crtc_x, crtc_y, crtc_w, crtc_h,
2779 0, 0, src_w, src_h);
2780
2781 /* Update successful; save new cursor position, if necessary */
2782 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2783 crtc->cursor_x = req->x;
2784 crtc->cursor_y = req->y;
2785 }
2786
2787 return ret;
2788}
2789
4c813d4d
DA		 2790static int drm_mode_cursor_common(struct drm_device *dev,
2791 struct drm_mode_cursor2 *req,
2792 struct drm_file *file_priv)
f453ba04 2793{
f453ba04
DA		 2794 struct drm_crtc *crtc;
2795 int ret = 0;
2796
fb3b06c8
DA		 2797 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2798 return -EINVAL;
2799
7c4eaca4 2800 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 2801 return -EINVAL;
f453ba04 2802
a2b34e22
RC		 2803 crtc = drm_crtc_find(dev, req->crtc_id);
2804 if (!crtc) {
58367ed6 2805 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 2806 return -ENOENT;
f453ba04 2807 }
f453ba04 2808
161d0dc1
MR		 2809 /*
2810 * If this crtc has a universal cursor plane, call that plane's update
2811 * handler rather than using legacy cursor handlers.
2812 */
d059f652 2813 drm_modeset_lock_crtc(crtc);
f2b50c11
DV		 2814 if (crtc->cursor) {
2815 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2816 goto out;
2817 }
2818
f453ba04 2819 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 2820 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 2821 ret = -ENXIO;
2822 goto out;
2823 }
2824 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 2825 if (crtc->funcs->cursor_set2)
2826 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2827 req->width, req->height, req->hot_x, req->hot_y);
2828 else
2829 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2830 req->width, req->height);
f453ba04
DA		 2831 }
2832
2833 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2834 if (crtc->funcs->cursor_move) {
2835 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2836 } else {
f453ba04
DA		 2837 ret = -EFAULT;
2838 goto out;
2839 }
2840 }
2841out:
d059f652 2842 drm_modeset_unlock_crtc(crtc);
dac35663 2843
f453ba04 2844 return ret;
4c813d4d
DA		 2845
2846}
c8e32cc1
DV		 2847
2848
2849/**
2850 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2851 * @dev: drm device for the ioctl
2852 * @data: data pointer for the ioctl
2853 * @file_priv: drm file for the ioctl call
2854 *
2855 * Set the cursor configuration based on user request.
2856 *
2857 * Called by the user via ioctl.
2858 *
2859 * Returns:
2860 * Zero on success, errno on failure.
2861 */
4c813d4d 2862int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 2863 void *data, struct drm_file *file_priv)
4c813d4d
DA		 2864{
2865 struct drm_mode_cursor *req = data;
2866 struct drm_mode_cursor2 new_req;
2867
2868 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2869 new_req.hot_x = new_req.hot_y = 0;
2870
2871 return drm_mode_cursor_common(dev, &new_req, file_priv);
2872}
2873
c8e32cc1
DV		 2874/**
2875 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2876 * @dev: drm device for the ioctl
2877 * @data: data pointer for the ioctl
2878 * @file_priv: drm file for the ioctl call
2879 *
2880 * Set the cursor configuration based on user request. This implements the 2nd
2881 * version of the cursor ioctl, which allows userspace to additionally specify
2882 * the hotspot of the pointer.
2883 *
2884 * Called by the user via ioctl.
2885 *
2886 * Returns:
2887 * Zero on success, errno on failure.
2888 */
4c813d4d
DA		 2889int drm_mode_cursor2_ioctl(struct drm_device *dev,
2890 void *data, struct drm_file *file_priv)
2891{
2892 struct drm_mode_cursor2 *req = data;
2893 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 2894}
2895
c8e32cc1
DV		 2896/**
2897 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2898 * @bpp: bits per pixels
2899 * @depth: bit depth per pixel
2900 *
2901 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2902 * Useful in fbdev emulation code, since that deals in those values.
2903 */
308e5bcb
JB		 2904uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2905{
2906 uint32_t fmt;
2907
2908 switch (bpp) {
2909 case 8:
d84f031b 2910 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 2911 break;
2912 case 16:
2913 if (depth == 15)
04b3924d 2914 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 2915 else
04b3924d 2916 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 2917 break;
2918 case 24:
04b3924d 2919 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 2920 break;
2921 case 32:
2922 if (depth == 24)
04b3924d 2923 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 2924 else if (depth == 30)
04b3924d 2925 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 2926 else
04b3924d 2927 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 2928 break;
2929 default:
04b3924d
VS		 2930 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2931 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 2932 break;
2933 }
2934
2935 return fmt;
2936}
2937EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2938
f453ba04
DA		 2939/**
2940 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 2941 * @dev: drm device for the ioctl
2942 * @data: data pointer for the ioctl
2943 * @file_priv: drm file for the ioctl call
f453ba04 2944 *
c8e32cc1
DV		 2945 * Add a new FB to the specified CRTC, given a user request. This is the
2946 * original addfb ioclt which only supported RGB formats.
f453ba04
DA		 2947 *
2948 * Called by the user via ioctl.
2949 *
c8e32cc1 2950 * Returns:
f453ba04
DA		 2951 * Zero on success, errno on failure.
2952 */
2953int drm_mode_addfb(struct drm_device *dev,
2954 void *data, struct drm_file *file_priv)
2955{
308e5bcb
JB		 2956 struct drm_mode_fb_cmd *or = data;
2957 struct drm_mode_fb_cmd2 r = {};
2958 struct drm_mode_config *config = &dev->mode_config;
2959 struct drm_framebuffer *fb;
2960 int ret = 0;
2961
2962 /* Use new struct with format internally */
2963 r.fb_id = or->fb_id;
2964 r.width = or->width;
2965 r.height = or->height;
2966 r.pitches[0] = or->pitch;
2967 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2968 r.handles[0] = or->handle;
2969
2970 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2971 return -EINVAL;
2972
acb4b992 2973 if ((config->min_width > r.width) || (r.width > config->max_width))
308e5bcb 2974 return -EINVAL;
acb4b992
JB		 2975
2976 if ((config->min_height > r.height) || (r.height > config->max_height))
308e5bcb 2977 return -EINVAL;
308e5bcb 2978
308e5bcb
JB		 2979 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2980 if (IS_ERR(fb)) {
1aa1b11c 2981 DRM_DEBUG_KMS("could not create framebuffer\n");
4b096ac1 2982 return PTR_ERR(fb);
308e5bcb
JB		 2983 }
2984
4b096ac1 2985 mutex_lock(&file_priv->fbs_lock);
308e5bcb
JB		 2986 or->fb_id = fb->base.id;
2987 list_add(&fb->filp_head, &file_priv->fbs);
2988 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
4b096ac1 2989 mutex_unlock(&file_priv->fbs_lock);
4b096ac1 2990
308e5bcb
JB		 2991 return ret;
2992}
2993
cff91b62 2994static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 2995{
2996 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2997
2998 switch (format) {
2999 case DRM_FORMAT_C8:
3000 case DRM_FORMAT_RGB332:
3001 case DRM_FORMAT_BGR233:
3002 case DRM_FORMAT_XRGB4444:
3003 case DRM_FORMAT_XBGR4444:
3004 case DRM_FORMAT_RGBX4444:
3005 case DRM_FORMAT_BGRX4444:
3006 case DRM_FORMAT_ARGB4444:
3007 case DRM_FORMAT_ABGR4444:
3008 case DRM_FORMAT_RGBA4444:
3009 case DRM_FORMAT_BGRA4444:
3010 case DRM_FORMAT_XRGB1555:
3011 case DRM_FORMAT_XBGR1555:
3012 case DRM_FORMAT_RGBX5551:
3013 case DRM_FORMAT_BGRX5551:
3014 case DRM_FORMAT_ARGB1555:
3015 case DRM_FORMAT_ABGR1555:
3016 case DRM_FORMAT_RGBA5551:
3017 case DRM_FORMAT_BGRA5551:
3018 case DRM_FORMAT_RGB565:
3019 case DRM_FORMAT_BGR565:
3020 case DRM_FORMAT_RGB888:
3021 case DRM_FORMAT_BGR888:
3022 case DRM_FORMAT_XRGB8888:
3023 case DRM_FORMAT_XBGR8888:
3024 case DRM_FORMAT_RGBX8888:
3025 case DRM_FORMAT_BGRX8888:
3026 case DRM_FORMAT_ARGB8888:
3027 case DRM_FORMAT_ABGR8888:
3028 case DRM_FORMAT_RGBA8888:
3029 case DRM_FORMAT_BGRA8888:
3030 case DRM_FORMAT_XRGB2101010:
3031 case DRM_FORMAT_XBGR2101010:
3032 case DRM_FORMAT_RGBX1010102:
3033 case DRM_FORMAT_BGRX1010102:
3034 case DRM_FORMAT_ARGB2101010:
3035 case DRM_FORMAT_ABGR2101010:
3036 case DRM_FORMAT_RGBA1010102:
3037 case DRM_FORMAT_BGRA1010102:
3038 case DRM_FORMAT_YUYV:
3039 case DRM_FORMAT_YVYU:
3040 case DRM_FORMAT_UYVY:
3041 case DRM_FORMAT_VYUY:
3042 case DRM_FORMAT_AYUV:
3043 case DRM_FORMAT_NV12:
3044 case DRM_FORMAT_NV21:
3045 case DRM_FORMAT_NV16:
3046 case DRM_FORMAT_NV61:
ba623f6a
LP		 3047 case DRM_FORMAT_NV24:
3048 case DRM_FORMAT_NV42:
935b5977
VS		 3049 case DRM_FORMAT_YUV410:
3050 case DRM_FORMAT_YVU410:
3051 case DRM_FORMAT_YUV411:
3052 case DRM_FORMAT_YVU411:
3053 case DRM_FORMAT_YUV420:
3054 case DRM_FORMAT_YVU420:
3055 case DRM_FORMAT_YUV422:
3056 case DRM_FORMAT_YVU422:
3057 case DRM_FORMAT_YUV444:
3058 case DRM_FORMAT_YVU444:
3059 return 0;
3060 default:
23c453a4
VS		 3061 DRM_DEBUG_KMS("invalid pixel format %s\n",
3062 drm_get_format_name(r->pixel_format));
935b5977
VS		 3063 return -EINVAL;
3064 }
3065}
3066
cff91b62 3067static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 3068{
3069 int ret, hsub, vsub, num_planes, i;
3070
3071 ret = format_check(r);
3072 if (ret) {
6ba6d03e
VS		 3073 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3074 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 3075 return ret;
3076 }
3077
3078 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3079 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3080 num_planes = drm_format_num_planes(r->pixel_format);
3081
3082 if (r->width == 0 || r->width % hsub) {
1aa1b11c 3083 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
d1b45d5f
VS		 3084 return -EINVAL;
3085 }
3086
3087 if (r->height == 0 || r->height % vsub) {
1aa1b11c 3088 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 3089 return -EINVAL;
3090 }
3091
3092 for (i = 0; i < num_planes; i++) {
3093 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 3094 unsigned int height = r->height / (i != 0 ? vsub : 1);
3095 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 3096
3097 if (!r->handles[i]) {
1aa1b11c 3098 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 3099 return -EINVAL;
3100 }
3101
b180b5d1
VS		 3102 if ((uint64_t) width * cpp > UINT_MAX)
3103 return -ERANGE;
3104
3105 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3106 return -ERANGE;
3107
3108 if (r->pitches[i] < width * cpp) {
1aa1b11c 3109 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 3110 return -EINVAL;
3111 }
3112 }
3113
3114 return 0;
3115}
3116
c394c2b0
MR		 3117static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3118 struct drm_mode_fb_cmd2 *r,
3119 struct drm_file *file_priv)
308e5bcb 3120{
f453ba04
DA		 3121 struct drm_mode_config *config = &dev->mode_config;
3122 struct drm_framebuffer *fb;
4a1b0714 3123 int ret;
f453ba04 3124
e3cc3520
VS		 3125 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3126 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
c394c2b0 3127 return ERR_PTR(-EINVAL);
e3cc3520
VS		 3128 }
3129
f453ba04 3130 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 3131 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 3132 r->width, config->min_width, config->max_width);
c394c2b0 3133 return ERR_PTR(-EINVAL);
f453ba04
DA		 3134 }
3135 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 3136 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 3137 r->height, config->min_height, config->max_height);
c394c2b0 3138 return ERR_PTR(-EINVAL);
f453ba04
DA		 3139 }
3140
d1b45d5f
VS		 3141 ret = framebuffer_check(r);
3142 if (ret)
c394c2b0 3143 return ERR_PTR(ret);
935b5977 3144
f453ba04 3145 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 3146 if (IS_ERR(fb)) {
1aa1b11c 3147 DRM_DEBUG_KMS("could not create framebuffer\n");
c394c2b0 3148 return fb;
f453ba04
DA		 3149 }
3150
4b096ac1 3151 mutex_lock(&file_priv->fbs_lock);
e0c8463a 3152 r->fb_id = fb->base.id;
f453ba04 3153 list_add(&fb->filp_head, &file_priv->fbs);
9440106b 3154 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
4b096ac1 3155 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3156
c394c2b0
MR		 3157 return fb;
3158}
4b096ac1 3159
c394c2b0
MR		 3160/**
3161 * drm_mode_addfb2 - add an FB to the graphics configuration
3162 * @dev: drm device for the ioctl
3163 * @data: data pointer for the ioctl
3164 * @file_priv: drm file for the ioctl call
3165 *
3166 * Add a new FB to the specified CRTC, given a user request with format. This is
3167 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3168 * and uses fourcc codes as pixel format specifiers.
3169 *
3170 * Called by the user via ioctl.
3171 *
3172 * Returns:
3173 * Zero on success, errno on failure.
3174 */
3175int drm_mode_addfb2(struct drm_device *dev,
3176 void *data, struct drm_file *file_priv)
3177{
3178 struct drm_framebuffer *fb;
3179
3180 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3181 return -EINVAL;
3182
3183 fb = add_framebuffer_internal(dev, data, file_priv);
3184 if (IS_ERR(fb))
3185 return PTR_ERR(fb);
3186
3187 return 0;
f453ba04
DA		 3188}
3189
3190/**
3191 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 3192 * @dev: drm device for the ioctl
3193 * @data: data pointer for the ioctl
3194 * @file_priv: drm file for the ioctl call
f453ba04 3195 *
f453ba04
DA		 3196 * Remove the FB specified by the user.
3197 *
3198 * Called by the user via ioctl.
3199 *
c8e32cc1 3200 * Returns:
f453ba04
DA		 3201 * Zero on success, errno on failure.
3202 */
3203int drm_mode_rmfb(struct drm_device *dev,
3204 void *data, struct drm_file *file_priv)
3205{
f453ba04
DA		 3206 struct drm_framebuffer *fb = NULL;
3207 struct drm_framebuffer *fbl = NULL;
3208 uint32_t *id = data;
f453ba04
DA		 3209 int found = 0;
3210
fb3b06c8
DA		 3211 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3212 return -EINVAL;
3213
4b096ac1 3214 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 3215 mutex_lock(&dev->mode_config.fb_lock);
3216 fb = __drm_framebuffer_lookup(dev, *id);
3217 if (!fb)
3218 goto fail_lookup;
3219
f453ba04
DA		 3220 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3221 if (fb == fbl)
3222 found = 1;
2b677e8c
DV		 3223 if (!found)
3224 goto fail_lookup;
3225
3226 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3227 __drm_framebuffer_unregister(dev, fb);
f453ba04 3228
4b096ac1 3229 list_del_init(&fb->filp_head);
2b677e8c 3230 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 3231 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3232
4b096ac1 3233 drm_framebuffer_remove(fb);
4b096ac1 3234
2b677e8c
DV		 3235 return 0;
3236
3237fail_lookup:
3238 mutex_unlock(&dev->mode_config.fb_lock);
3239 mutex_unlock(&file_priv->fbs_lock);
3240
37c4e705 3241 return -ENOENT;
f453ba04
DA		 3242}
3243
3244/**
3245 * drm_mode_getfb - get FB info
065a50ed
DV		 3246 * @dev: drm device for the ioctl
3247 * @data: data pointer for the ioctl
3248 * @file_priv: drm file for the ioctl call
f453ba04 3249 *
f453ba04
DA		 3250 * Lookup the FB given its ID and return info about it.
3251 *
3252 * Called by the user via ioctl.
3253 *
c8e32cc1 3254 * Returns:
f453ba04
DA		 3255 * Zero on success, errno on failure.
3256 */
3257int drm_mode_getfb(struct drm_device *dev,
3258 void *data, struct drm_file *file_priv)
3259{
3260 struct drm_mode_fb_cmd *r = data;
f453ba04 3261 struct drm_framebuffer *fb;
58c0dca1 3262 int ret;
f453ba04 3263
fb3b06c8
DA		 3264 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3265 return -EINVAL;
3266
786b99ed 3267 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 3268 if (!fb)
37c4e705 3269 return -ENOENT;
f453ba04
DA		 3270
3271 r->height = fb->height;
3272 r->width = fb->width;
3273 r->depth = fb->depth;
3274 r->bpp = fb->bits_per_pixel;
01f2c773 3275 r->pitch = fb->pitches[0];
101b96f3 3276 if (fb->funcs->create_handle) {
09f308f7 3277 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 3278 drm_is_control_client(file_priv)) {
101b96f3
DH		 3279 ret = fb->funcs->create_handle(fb, file_priv,
3280 &r->handle);
3281 } else {
3282 /* GET_FB() is an unprivileged ioctl so we must not
3283 * return a buffer-handle to non-master processes! For
3284 * backwards-compatibility reasons, we cannot make
3285 * GET_FB() privileged, so just return an invalid handle
3286 * for non-masters. */
3287 r->handle = 0;
3288 ret = 0;
3289 }
3290 } else {
af26ef3b 3291 ret = -ENODEV;
101b96f3 3292 }
f453ba04 3293
58c0dca1
DV		 3294 drm_framebuffer_unreference(fb);
3295
f453ba04
DA		 3296 return ret;
3297}
3298
c8e32cc1
DV		 3299/**
3300 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3301 * @dev: drm device for the ioctl
3302 * @data: data pointer for the ioctl
3303 * @file_priv: drm file for the ioctl call
3304 *
3305 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3306 * rectangle list. Generic userspace which does frontbuffer rendering must call
3307 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3308 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3309 *
3310 * Modesetting drivers which always update the frontbuffer do not need to
3311 * implement the corresponding ->dirty framebuffer callback.
3312 *
3313 * Called by the user via ioctl.
3314 *
3315 * Returns:
3316 * Zero on success, errno on failure.
3317 */
884840aa
JB		 3318int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3319 void *data, struct drm_file *file_priv)
3320{
3321 struct drm_clip_rect __user *clips_ptr;
3322 struct drm_clip_rect *clips = NULL;
3323 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 3324 struct drm_framebuffer *fb;
3325 unsigned flags;
3326 int num_clips;
4a1b0714 3327 int ret;
884840aa 3328
fb3b06c8
DA		 3329 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3330 return -EINVAL;
3331
786b99ed 3332 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 3333 if (!fb)
37c4e705 3334 return -ENOENT;
884840aa
JB		 3335
3336 num_clips = r->num_clips;
81f6c7f8 3337 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 3338
3339 if (!num_clips != !clips_ptr) {
3340 ret = -EINVAL;
3341 goto out_err1;
3342 }
3343
3344 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3345
3346 /* If userspace annotates copy, clips must come in pairs */
3347 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3348 ret = -EINVAL;
3349 goto out_err1;
3350 }
3351
3352 if (num_clips && clips_ptr) {
a5cd3351
XW		 3353 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3354 ret = -EINVAL;
3355 goto out_err1;
3356 }
884840aa
JB		 3357 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3358 if (!clips) {
3359 ret = -ENOMEM;
3360 goto out_err1;
3361 }
3362
3363 ret = copy_from_user(clips, clips_ptr,
3364 num_clips * sizeof(*clips));
e902a358
DC		 3365 if (ret) {
3366 ret = -EFAULT;
884840aa 3367 goto out_err2;
e902a358 3368 }
884840aa
JB		 3369 }
3370
3371 if (fb->funcs->dirty) {
02b00162
TH		 3372 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3373 clips, num_clips);
884840aa
JB		 3374 } else {
3375 ret = -ENOSYS;
884840aa
JB		 3376 }
3377
3378out_err2:
3379 kfree(clips);
3380out_err1:
4ccf097f
DV		 3381 drm_framebuffer_unreference(fb);
3382
884840aa
JB		 3383 return ret;
3384}
3385
3386
f453ba04
DA		 3387/**
3388 * drm_fb_release - remove and free the FBs on this file
065a50ed 3389 * @priv: drm file for the ioctl
f453ba04 3390 *
f453ba04
DA		 3391 * Destroy all the FBs associated with @filp.
3392 *
3393 * Called by the user via ioctl.
3394 *
c8e32cc1 3395 * Returns:
f453ba04
DA		 3396 * Zero on success, errno on failure.
3397 */
ea39f835 3398void drm_fb_release(struct drm_file *priv)
f453ba04 3399{
f453ba04
DA		 3400 struct drm_device *dev = priv->minor->dev;
3401 struct drm_framebuffer *fb, *tfb;
3402
1b116297
DV		 3403 /*
3404 * When the file gets released that means no one else can access the fb
3405 * list any more, so no need to grab fpriv->fbs_lock. And we need to to
3406 * avoid upsetting lockdep since the universal cursor code adds a
3407 * framebuffer while holding mutex locks.
3408 *
3409 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3410 * locks is impossible here since no one else but this function can get
3411 * at it any more.
3412 */
f453ba04 3413 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2b677e8c
DV		 3414
3415 mutex_lock(&dev->mode_config.fb_lock);
3416 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3417 __drm_framebuffer_unregister(dev, fb);
3418 mutex_unlock(&dev->mode_config.fb_lock);
3419
4b096ac1 3420 list_del_init(&fb->filp_head);
2b677e8c
DV		 3421
3422 /* This will also drop the fpriv->fbs reference. */
f7eff60e 3423 drm_framebuffer_remove(fb);
f453ba04 3424 }
f453ba04
DA		 3425}
3426
c8e32cc1
DV		 3427/**
3428 * drm_property_create - create a new property type
3429 * @dev: drm device
3430 * @flags: flags specifying the property type
3431 * @name: name of the property
3432 * @num_values: number of pre-defined values
3433 *
3434 * This creates a new generic drm property which can then be attached to a drm
3435 * object with drm_object_attach_property. The returned property object must be
3436 * freed with drm_property_destroy.
3437 *
3438 * Returns:
3439 * A pointer to the newly created property on success, NULL on failure.
3440 */
f453ba04
DA		 3441struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3442 const char *name, int num_values)
3443{
3444 struct drm_property *property = NULL;
6bfc56aa 3445 int ret;
f453ba04
DA		 3446
3447 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3448 if (!property)
3449 return NULL;
3450
98f75de4
RC		 3451 property->dev = dev;
3452
f453ba04
DA		 3453 if (num_values) {
3454 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3455 if (!property->values)
3456 goto fail;
3457 }
3458
6bfc56aa
VS		 3459 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3460 if (ret)
3461 goto fail;
3462
f453ba04
DA		 3463 property->flags = flags;
3464 property->num_values = num_values;
3465 INIT_LIST_HEAD(&property->enum_blob_list);
3466
471dd2ef 3467 if (name) {
f453ba04 3468 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3469 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3470 }
f453ba04
DA		 3471
3472 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3473
3474 WARN_ON(!drm_property_type_valid(property));
3475
f453ba04
DA		 3476 return property;
3477fail:
6bfc56aa 3478 kfree(property->values);
f453ba04
DA		 3479 kfree(property);
3480 return NULL;
3481}
3482EXPORT_SYMBOL(drm_property_create);
3483
c8e32cc1 3484/**
2aa9d2bc 3485 * drm_property_create_enum - create a new enumeration property type
c8e32cc1
DV		 3486 * @dev: drm device
3487 * @flags: flags specifying the property type
3488 * @name: name of the property
3489 * @props: enumeration lists with property values
3490 * @num_values: number of pre-defined values
3491 *
3492 * This creates a new generic drm property which can then be attached to a drm
3493 * object with drm_object_attach_property. The returned property object must be
3494 * freed with drm_property_destroy.
3495 *
3496 * Userspace is only allowed to set one of the predefined values for enumeration
3497 * properties.
3498 *
3499 * Returns:
3500 * A pointer to the newly created property on success, NULL on failure.
3501 */
4a67d391
SH		 3502struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3503 const char *name,
3504 const struct drm_prop_enum_list *props,
3505 int num_values)
3506{
3507 struct drm_property *property;
3508 int i, ret;
3509
3510 flags |= DRM_MODE_PROP_ENUM;
3511
3512 property = drm_property_create(dev, flags, name, num_values);
3513 if (!property)
3514 return NULL;
3515
3516 for (i = 0; i < num_values; i++) {
3517 ret = drm_property_add_enum(property, i,
3518 props[i].type,
3519 props[i].name);
3520 if (ret) {
3521 drm_property_destroy(dev, property);
3522 return NULL;
3523 }
3524 }
3525
3526 return property;
3527}
3528EXPORT_SYMBOL(drm_property_create_enum);
3529
c8e32cc1 3530/**
2aa9d2bc 3531 * drm_property_create_bitmask - create a new bitmask property type
c8e32cc1
DV		 3532 * @dev: drm device
3533 * @flags: flags specifying the property type
3534 * @name: name of the property
3535 * @props: enumeration lists with property bitflags
295ee853
DV		 3536 * @num_props: size of the @props array
3537 * @supported_bits: bitmask of all supported enumeration values
c8e32cc1 3538 *
295ee853 3539 * This creates a new bitmask drm property which can then be attached to a drm
c8e32cc1
DV		 3540 * object with drm_object_attach_property. The returned property object must be
3541 * freed with drm_property_destroy.
3542 *
3543 * Compared to plain enumeration properties userspace is allowed to set any
3544 * or'ed together combination of the predefined property bitflag values
3545 *
3546 * Returns:
3547 * A pointer to the newly created property on success, NULL on failure.
3548 */
49e27545
RC		 3549struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3550 int flags, const char *name,
3551 const struct drm_prop_enum_list *props,
7689ffb3
VS		 3552 int num_props,
3553 uint64_t supported_bits)
49e27545
RC		 3554{
3555 struct drm_property *property;
7689ffb3
VS		 3556 int i, ret, index = 0;
3557 int num_values = hweight64(supported_bits);
49e27545
RC		 3558
3559 flags |= DRM_MODE_PROP_BITMASK;
3560
3561 property = drm_property_create(dev, flags, name, num_values);
3562 if (!property)
3563 return NULL;
7689ffb3
VS		 3564 for (i = 0; i < num_props; i++) {
3565 if (!(supported_bits & (1ULL << props[i].type)))
3566 continue;
49e27545 3567
7689ffb3
VS		 3568 if (WARN_ON(index >= num_values)) {
3569 drm_property_destroy(dev, property);
3570 return NULL;
3571 }
3572
3573 ret = drm_property_add_enum(property, index++,
49e27545
RC		 3574 props[i].type,
3575 props[i].name);
3576 if (ret) {
3577 drm_property_destroy(dev, property);
3578 return NULL;
3579 }
3580 }
3581
3582 return property;
3583}
3584EXPORT_SYMBOL(drm_property_create_bitmask);
3585
ebc44cf3
RC		 3586static struct drm_property *property_create_range(struct drm_device *dev,
3587 int flags, const char *name,
3588 uint64_t min, uint64_t max)
3589{
3590 struct drm_property *property;
3591
3592 property = drm_property_create(dev, flags, name, 2);
3593 if (!property)
3594 return NULL;
3595
3596 property->values[0] = min;
3597 property->values[1] = max;
3598
3599 return property;
3600}
3601
c8e32cc1 3602/**
2aa9d2bc 3603 * drm_property_create_range - create a new ranged property type
c8e32cc1
DV		 3604 * @dev: drm device
3605 * @flags: flags specifying the property type
3606 * @name: name of the property
3607 * @min: minimum value of the property
3608 * @max: maximum value of the property
3609 *
3610 * This creates a new generic drm property which can then be attached to a drm
3611 * object with drm_object_attach_property. The returned property object must be
3612 * freed with drm_property_destroy.
3613 *
3614 * Userspace is allowed to set any interger value in the (min, max) range
3615 * inclusive.
3616 *
3617 * Returns:
3618 * A pointer to the newly created property on success, NULL on failure.
3619 */
d9bc3c02
SH		 3620struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3621 const char *name,
3622 uint64_t min, uint64_t max)
3623{
ebc44cf3
RC		 3624 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3625 name, min, max);
d9bc3c02
SH		 3626}
3627EXPORT_SYMBOL(drm_property_create_range);
3628
ebc44cf3
RC		 3629struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3630 int flags, const char *name,
3631 int64_t min, int64_t max)
3632{
3633 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3634 name, I642U64(min), I642U64(max));
3635}
3636EXPORT_SYMBOL(drm_property_create_signed_range);
3637
98f75de4
RC		 3638struct drm_property *drm_property_create_object(struct drm_device *dev,
3639 int flags, const char *name, uint32_t type)
3640{
3641 struct drm_property *property;
3642
3643 flags |= DRM_MODE_PROP_OBJECT;
3644
3645 property = drm_property_create(dev, flags, name, 1);
3646 if (!property)
3647 return NULL;
3648
3649 property->values[0] = type;
3650
3651 return property;
3652}
3653EXPORT_SYMBOL(drm_property_create_object);
3654
c8e32cc1
DV		 3655/**
3656 * drm_property_add_enum - add a possible value to an enumeration property
3657 * @property: enumeration property to change
3658 * @index: index of the new enumeration
3659 * @value: value of the new enumeration
3660 * @name: symbolic name of the new enumeration
3661 *
3662 * This functions adds enumerations to a property.
3663 *
3664 * It's use is deprecated, drivers should use one of the more specific helpers
3665 * to directly create the property with all enumerations already attached.
3666 *
3667 * Returns:
3668 * Zero on success, error code on failure.
3669 */
f453ba04
DA		 3670int drm_property_add_enum(struct drm_property *property, int index,
3671 uint64_t value, const char *name)
3672{
3673 struct drm_property_enum *prop_enum;
3674
5ea22f24
RC		 3675 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3676 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 3677 return -EINVAL;
3678
3679 /*
3680 * Bitmask enum properties have the additional constraint of values
3681 * from 0 to 63
3682 */
5ea22f24
RC		 3683 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3684 (value > 63))
f453ba04
DA		 3685 return -EINVAL;
3686
3687 if (!list_empty(&property->enum_blob_list)) {
3688 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3689 if (prop_enum->value == value) {
3690 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3691 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3692 return 0;
3693 }
3694 }
3695 }
3696
3697 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3698 if (!prop_enum)
3699 return -ENOMEM;
3700
3701 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3702 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3703 prop_enum->value = value;
3704
3705 property->values[index] = value;
3706 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3707 return 0;
3708}
3709EXPORT_SYMBOL(drm_property_add_enum);
3710
c8e32cc1
DV		 3711/**
3712 * drm_property_destroy - destroy a drm property
3713 * @dev: drm device
3714 * @property: property to destry
3715 *
3716 * This function frees a property including any attached resources like
3717 * enumeration values.
3718 */
f453ba04
DA		 3719void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3720{
3721 struct drm_property_enum *prop_enum, *pt;
3722
3723 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3724 list_del(&prop_enum->head);
3725 kfree(prop_enum);
3726 }
3727
3728 if (property->num_values)
3729 kfree(property->values);
3730 drm_mode_object_put(dev, &property->base);
3731 list_del(&property->head);
3732 kfree(property);
3733}
3734EXPORT_SYMBOL(drm_property_destroy);
3735
c8e32cc1
DV		 3736/**
3737 * drm_object_attach_property - attach a property to a modeset object
3738 * @obj: drm modeset object
3739 * @property: property to attach
3740 * @init_val: initial value of the property
3741 *
3742 * This attaches the given property to the modeset object with the given initial
3743 * value. Currently this function cannot fail since the properties are stored in
3744 * a statically sized array.
3745 */
c543188a
PZ		 3746void drm_object_attach_property(struct drm_mode_object *obj,
3747 struct drm_property *property,
3748 uint64_t init_val)
3749{
7f88a9be 3750 int count = obj->properties->count;
c543188a 3751
7f88a9be
PZ		 3752 if (count == DRM_OBJECT_MAX_PROPERTY) {
3753 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3754 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3755 "you see this message on the same object type.\n",
3756 obj->type);
3757 return;
c543188a
PZ		 3758 }
3759
7f88a9be
PZ		 3760 obj->properties->ids[count] = property->base.id;
3761 obj->properties->values[count] = init_val;
3762 obj->properties->count++;
c543188a
PZ		 3763}
3764EXPORT_SYMBOL(drm_object_attach_property);
3765
c8e32cc1
DV		 3766/**
3767 * drm_object_property_set_value - set the value of a property
3768 * @obj: drm mode object to set property value for
3769 * @property: property to set
3770 * @val: value the property should be set to
3771 *
3772 * This functions sets a given property on a given object. This function only
3773 * changes the software state of the property, it does not call into the
3774 * driver's ->set_property callback.
3775 *
3776 * Returns:
3777 * Zero on success, error code on failure.
3778 */
c543188a
PZ		 3779int drm_object_property_set_value(struct drm_mode_object *obj,
3780 struct drm_property *property, uint64_t val)
3781{
3782 int i;
3783
7f88a9be 3784 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 3785 if (obj->properties->ids[i] == property->base.id) {
3786 obj->properties->values[i] = val;
3787 return 0;
3788 }
3789 }
3790
3791 return -EINVAL;
3792}
3793EXPORT_SYMBOL(drm_object_property_set_value);
3794
c8e32cc1
DV		 3795/**
3796 * drm_object_property_get_value - retrieve the value of a property
3797 * @obj: drm mode object to get property value from
3798 * @property: property to retrieve
3799 * @val: storage for the property value
3800 *
3801 * This function retrieves the softare state of the given property for the given
3802 * property. Since there is no driver callback to retrieve the current property
3803 * value this might be out of sync with the hardware, depending upon the driver
3804 * and property.
3805 *
3806 * Returns:
3807 * Zero on success, error code on failure.
3808 */
c543188a
PZ		 3809int drm_object_property_get_value(struct drm_mode_object *obj,
3810 struct drm_property *property, uint64_t *val)
3811{
3812 int i;
3813
7f88a9be 3814 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 3815 if (obj->properties->ids[i] == property->base.id) {
3816 *val = obj->properties->values[i];
3817 return 0;
3818 }
3819 }
3820
3821 return -EINVAL;
3822}
3823EXPORT_SYMBOL(drm_object_property_get_value);
3824
c8e32cc1
DV		 3825/**
3826 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3827 * @dev: DRM device
3828 * @data: ioctl data
3829 * @file_priv: DRM file info
3830 *
3831 * This function retrieves the current value for an connectors's property.
3832 *
3833 * Called by the user via ioctl.
3834 *
3835 * Returns:
3836 * Zero on success, errno on failure.
3837 */
f453ba04
DA		 3838int drm_mode_getproperty_ioctl(struct drm_device *dev,
3839 void *data, struct drm_file *file_priv)
3840{
f453ba04
DA		 3841 struct drm_mode_get_property *out_resp = data;
3842 struct drm_property *property;
3843 int enum_count = 0;
3844 int blob_count = 0;
3845 int value_count = 0;
3846 int ret = 0, i;
3847 int copied;
3848 struct drm_property_enum *prop_enum;
3849 struct drm_mode_property_enum __user *enum_ptr;
3850 struct drm_property_blob *prop_blob;
81f6c7f8 3851 uint32_t __user *blob_id_ptr;
f453ba04
DA		 3852 uint64_t __user *values_ptr;
3853 uint32_t __user *blob_length_ptr;
3854
fb3b06c8
DA		 3855 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3856 return -EINVAL;
3857
84849903 3858 drm_modeset_lock_all(dev);
a2b34e22
RC		 3859 property = drm_property_find(dev, out_resp->prop_id);
3860 if (!property) {
f27657f2 3861 ret = -ENOENT;
f453ba04
DA		 3862 goto done;
3863 }
f453ba04 3864
5ea22f24
RC		 3865 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3866 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 3867 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3868 enum_count++;
5ea22f24 3869 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
f453ba04
DA		 3870 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3871 blob_count++;
3872 }
3873
3874 value_count = property->num_values;
3875
3876 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3877 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3878 out_resp->flags = property->flags;
3879
3880 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 3881 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 3882 for (i = 0; i < value_count; i++) {
3883 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3884 ret = -EFAULT;
3885 goto done;
3886 }
3887 }
3888 }
3889 out_resp->count_values = value_count;
3890
5ea22f24
RC		 3891 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3892 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 3893 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3894 copied = 0;
81f6c7f8 3895 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
f453ba04
DA		 3896 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3897
3898 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3899 ret = -EFAULT;
3900 goto done;
3901 }
3902
3903 if (copy_to_user(&enum_ptr[copied].name,
3904 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3905 ret = -EFAULT;
3906 goto done;
3907 }
3908 copied++;
3909 }
3910 }
3911 out_resp->count_enum_blobs = enum_count;
3912 }
3913
5ea22f24 3914 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
f453ba04
DA		 3915 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3916 copied = 0;
81f6c7f8
VS		 3917 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3918 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 3919
3920 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3921 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3922 ret = -EFAULT;
3923 goto done;
3924 }
3925
3926 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3927 ret = -EFAULT;
3928 goto done;
3929 }
3930
3931 copied++;
3932 }
3933 }
3934 out_resp->count_enum_blobs = blob_count;
3935 }
3936done:
84849903 3937 drm_modeset_unlock_all(dev);
f453ba04
DA		 3938 return ret;
3939}
3940
3941static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3942 void *data)
3943{
3944 struct drm_property_blob *blob;
6bfc56aa 3945 int ret;
f453ba04
DA		 3946
3947 if (!length || !data)
3948 return NULL;
3949
3950 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3951 if (!blob)
3952 return NULL;
3953
6bfc56aa
VS		 3954 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3955 if (ret) {
3956 kfree(blob);
3957 return NULL;
3958 }
3959
f453ba04
DA		 3960 blob->length = length;
3961
3962 memcpy(blob->data, data, length);
3963
f453ba04
DA		 3964 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3965 return blob;
3966}
3967
3968static void drm_property_destroy_blob(struct drm_device *dev,
3969 struct drm_property_blob *blob)
3970{
3971 drm_mode_object_put(dev, &blob->base);
3972 list_del(&blob->head);
3973 kfree(blob);
3974}
3975
c8e32cc1
DV		 3976/**
3977 * drm_mode_getblob_ioctl - get the contents of a blob property value
3978 * @dev: DRM device
3979 * @data: ioctl data
3980 * @file_priv: DRM file info
3981 *
3982 * This function retrieves the contents of a blob property. The value stored in
3983 * an object's blob property is just a normal modeset object id.
3984 *
3985 * Called by the user via ioctl.
3986 *
3987 * Returns:
3988 * Zero on success, errno on failure.
3989 */
f453ba04
DA		 3990int drm_mode_getblob_ioctl(struct drm_device *dev,
3991 void *data, struct drm_file *file_priv)
3992{
f453ba04
DA		 3993 struct drm_mode_get_blob *out_resp = data;
3994 struct drm_property_blob *blob;
3995 int ret = 0;
81f6c7f8 3996 void __user *blob_ptr;
f453ba04 3997
fb3b06c8
DA		 3998 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3999 return -EINVAL;
4000
84849903 4001 drm_modeset_lock_all(dev);
a2b34e22
RC		 4002 blob = drm_property_blob_find(dev, out_resp->blob_id);
4003 if (!blob) {
f27657f2 4004 ret = -ENOENT;
f453ba04
DA		 4005 goto done;
4006 }
f453ba04
DA		 4007
4008 if (out_resp->length == blob->length) {
81f6c7f8 4009 blob_ptr = (void __user *)(unsigned long)out_resp->data;
f453ba04
DA		 4010 if (copy_to_user(blob_ptr, blob->data, blob->length)){
4011 ret = -EFAULT;
4012 goto done;
4013 }
4014 }
4015 out_resp->length = blob->length;
4016
4017done:
84849903 4018 drm_modeset_unlock_all(dev);
f453ba04
DA		 4019 return ret;
4020}
4021
43aba7eb
DA		 4022int drm_mode_connector_set_path_property(struct drm_connector *connector,
4023 char *path)
4024{
4025 struct drm_device *dev = connector->dev;
4026 int ret, size;
4027 size = strlen(path) + 1;
4028
4029 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4030 size, path);
4031 if (!connector->path_blob_ptr)
4032 return -EINVAL;
4033
4034 ret = drm_object_property_set_value(&connector->base,
4035 dev->mode_config.path_property,
4036 connector->path_blob_ptr->base.id);
4037 return ret;
4038}
4039EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4040
c8e32cc1
DV		 4041/**
4042 * drm_mode_connector_update_edid_property - update the edid property of a connector
4043 * @connector: drm connector
4044 * @edid: new value of the edid property
4045 *
4046 * This function creates a new blob modeset object and assigns its id to the
4047 * connector's edid property.
4048 *
4049 * Returns:
4050 * Zero on success, errno on failure.
4051 */
f453ba04
DA		 4052int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4053 struct edid *edid)
4054{
4055 struct drm_device *dev = connector->dev;
4a1b0714 4056 int ret, size;
f453ba04 4057
4cf2b281
TW		 4058 /* ignore requests to set edid when overridden */
4059 if (connector->override_edid)
4060 return 0;
4061
f453ba04
DA		 4062 if (connector->edid_blob_ptr)
4063 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4064
4065 /* Delete edid, when there is none. */
4066 if (!edid) {
4067 connector->edid_blob_ptr = NULL;
58495563 4068 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
f453ba04
DA		 4069 return ret;
4070 }
4071
7466f4cc
AJ		 4072 size = EDID_LENGTH * (1 + edid->extensions);
4073 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4074 size, edid);
e655d122
SK		 4075 if (!connector->edid_blob_ptr)
4076 return -EINVAL;
f453ba04 4077
58495563 4078 ret = drm_object_property_set_value(&connector->base,
f453ba04
DA		 4079 dev->mode_config.edid_property,
4080 connector->edid_blob_ptr->base.id);
4081
4082 return ret;
4083}
4084EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4085
26a34815 4086static bool drm_property_change_is_valid(struct drm_property *property,
592c20ee 4087 uint64_t value)
26a34815
PZ		 4088{
4089 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4090 return false;
5ea22f24
RC		 4091
4092 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 4093 if (value < property->values[0] || value > property->values[1])
4094 return false;
4095 return true;
ebc44cf3
RC		 4096 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4097 int64_t svalue = U642I64(value);
4098 if (svalue < U642I64(property->values[0]) ||
4099 svalue > U642I64(property->values[1]))
4100 return false;
4101 return true;
5ea22f24 4102 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
49e27545 4103 int i;
592c20ee 4104 uint64_t valid_mask = 0;
49e27545
RC		 4105 for (i = 0; i < property->num_values; i++)
4106 valid_mask |= (1ULL << property->values[i]);
4107 return !(value & ~valid_mask);
5ea22f24 4108 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
c4a56750
VS		 4109 /* Only the driver knows */
4110 return true;
98f75de4
RC		 4111 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4112 struct drm_mode_object *obj;
4113 /* a zero value for an object property translates to null: */
4114 if (value == 0)
4115 return true;
4116 /*
4117 * NOTE: use _object_find() directly to bypass restriction on
4118 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4119 * object this could race against object finalization, so it
4120 * simply tells us that the object *was* valid. Which is good
4121 * enough.
4122 */
4123 obj = _object_find(property->dev, value, property->values[0]);
4124 return obj != NULL;
26a34815
PZ		 4125 } else {
4126 int i;
4127 for (i = 0; i < property->num_values; i++)
4128 if (property->values[i] == value)
4129 return true;
4130 return false;
4131 }
4132}
4133
c8e32cc1
DV		 4134/**
4135 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4136 * @dev: DRM device
4137 * @data: ioctl data
4138 * @file_priv: DRM file info
4139 *
4140 * This function sets the current value for a connectors's property. It also
4141 * calls into a driver's ->set_property callback to update the hardware state
4142 *
4143 * Called by the user via ioctl.
4144 *
4145 * Returns:
4146 * Zero on success, errno on failure.
4147 */
f453ba04
DA		 4148int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4149 void *data, struct drm_file *file_priv)
4150{
0057d8dd
PZ		 4151 struct drm_mode_connector_set_property *conn_set_prop = data;
4152 struct drm_mode_obj_set_property obj_set_prop = {
4153 .value = conn_set_prop->value,
4154 .prop_id = conn_set_prop->prop_id,
4155 .obj_id = conn_set_prop->connector_id,
4156 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4157 };
fb3b06c8 4158
0057d8dd
PZ		 4159 /* It does all the locking and checking we need */
4160 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 4161}
4162
c543188a
PZ		 4163static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4164 struct drm_property *property,
4165 uint64_t value)
4166{
4167 int ret = -EINVAL;
4168 struct drm_connector *connector = obj_to_connector(obj);
4169
4170 /* Do DPMS ourselves */
4171 if (property == connector->dev->mode_config.dpms_property) {
4172 if (connector->funcs->dpms)
4173 (*connector->funcs->dpms)(connector, (int)value);
4174 ret = 0;
4175 } else if (connector->funcs->set_property)
4176 ret = connector->funcs->set_property(connector, property, value);
4177
4178 /* store the property value if successful */
4179 if (!ret)
58495563 4180 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 4181 return ret;
4182}
4183
bffd9de0
PZ		 4184static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4185 struct drm_property *property,
4186 uint64_t value)
4187{
4188 int ret = -EINVAL;
4189 struct drm_crtc *crtc = obj_to_crtc(obj);
4190
4191 if (crtc->funcs->set_property)
4192 ret = crtc->funcs->set_property(crtc, property, value);
4193 if (!ret)
4194 drm_object_property_set_value(obj, property, value);
4195
4196 return ret;
4197}
4198
3a5f87c2
TW		 4199/**
4200 * drm_mode_plane_set_obj_prop - set the value of a property
4201 * @plane: drm plane object to set property value for
4202 * @property: property to set
4203 * @value: value the property should be set to
4204 *
4205 * This functions sets a given property on a given plane object. This function
4206 * calls the driver's ->set_property callback and changes the software state of
4207 * the property if the callback succeeds.
4208 *
4209 * Returns:
4210 * Zero on success, error code on failure.
4211 */
4212int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4213 struct drm_property *property,
4214 uint64_t value)
4d93914a
RC		 4215{
4216 int ret = -EINVAL;
3a5f87c2 4217 struct drm_mode_object *obj = &plane->base;
4d93914a
RC		 4218
4219 if (plane->funcs->set_property)
4220 ret = plane->funcs->set_property(plane, property, value);
4221 if (!ret)
4222 drm_object_property_set_value(obj, property, value);
4223
4224 return ret;
4225}
3a5f87c2 4226EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4d93914a 4227
c8e32cc1
DV		 4228/**
4229 * drm_mode_getproperty_ioctl - get the current value of a object's property
4230 * @dev: DRM device
4231 * @data: ioctl data
4232 * @file_priv: DRM file info
4233 *
4234 * This function retrieves the current value for an object's property. Compared
4235 * to the connector specific ioctl this one is extended to also work on crtc and
4236 * plane objects.
4237 *
4238 * Called by the user via ioctl.
4239 *
4240 * Returns:
4241 * Zero on success, errno on failure.
4242 */
c543188a
PZ		 4243int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4244 struct drm_file *file_priv)
4245{
4246 struct drm_mode_obj_get_properties *arg = data;
4247 struct drm_mode_object *obj;
4248 int ret = 0;
4249 int i;
4250 int copied = 0;
4251 int props_count = 0;
4252 uint32_t __user *props_ptr;
4253 uint64_t __user *prop_values_ptr;
4254
4255 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4256 return -EINVAL;
4257
84849903 4258 drm_modeset_lock_all(dev);
c543188a
PZ		 4259
4260 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4261 if (!obj) {
f27657f2 4262 ret = -ENOENT;
c543188a
PZ		 4263 goto out;
4264 }
4265 if (!obj->properties) {
4266 ret = -EINVAL;
4267 goto out;
4268 }
4269
7f88a9be 4270 props_count = obj->properties->count;
c543188a
PZ		 4271
4272 /* This ioctl is called twice, once to determine how much space is
4273 * needed, and the 2nd time to fill it. */
4274 if ((arg->count_props >= props_count) && props_count) {
4275 copied = 0;
4276 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4277 prop_values_ptr = (uint64_t __user *)(unsigned long)
4278 (arg->prop_values_ptr);
4279 for (i = 0; i < props_count; i++) {
4280 if (put_user(obj->properties->ids[i],
4281 props_ptr + copied)) {
4282 ret = -EFAULT;
4283 goto out;
4284 }
4285 if (put_user(obj->properties->values[i],
4286 prop_values_ptr + copied)) {
4287 ret = -EFAULT;
4288 goto out;
4289 }
4290 copied++;
4291 }
4292 }
4293 arg->count_props = props_count;
4294out:
84849903 4295 drm_modeset_unlock_all(dev);
c543188a
PZ		 4296 return ret;
4297}
4298
c8e32cc1
DV		 4299/**
4300 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4301 * @dev: DRM device
4302 * @data: ioctl data
4303 * @file_priv: DRM file info
4304 *
4305 * This function sets the current value for an object's property. It also calls
4306 * into a driver's ->set_property callback to update the hardware state.
4307 * Compared to the connector specific ioctl this one is extended to also work on
4308 * crtc and plane objects.
4309 *
4310 * Called by the user via ioctl.
4311 *
4312 * Returns:
4313 * Zero on success, errno on failure.
4314 */
c543188a
PZ		 4315int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4316 struct drm_file *file_priv)
4317{
4318 struct drm_mode_obj_set_property *arg = data;
4319 struct drm_mode_object *arg_obj;
4320 struct drm_mode_object *prop_obj;
4321 struct drm_property *property;
4322 int ret = -EINVAL;
4323 int i;
4324
4325 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4326 return -EINVAL;
4327
84849903 4328 drm_modeset_lock_all(dev);
c543188a
PZ		 4329
4330 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 4331 if (!arg_obj) {
4332 ret = -ENOENT;
c543188a 4333 goto out;
f27657f2 4334 }
c543188a
PZ		 4335 if (!arg_obj->properties)
4336 goto out;
4337
7f88a9be 4338 for (i = 0; i < arg_obj->properties->count; i++)
c543188a
PZ		 4339 if (arg_obj->properties->ids[i] == arg->prop_id)
4340 break;
4341
7f88a9be 4342 if (i == arg_obj->properties->count)
c543188a
PZ		 4343 goto out;
4344
4345 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4346 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 4347 if (!prop_obj) {
4348 ret = -ENOENT;
c543188a 4349 goto out;
f27657f2 4350 }
c543188a
PZ		 4351 property = obj_to_property(prop_obj);
4352
4353 if (!drm_property_change_is_valid(property, arg->value))
4354 goto out;
4355
4356 switch (arg_obj->type) {
4357 case DRM_MODE_OBJECT_CONNECTOR:
4358 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4359 arg->value);
4360 break;
bffd9de0
PZ		 4361 case DRM_MODE_OBJECT_CRTC:
4362 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4363 break;
4d93914a 4364 case DRM_MODE_OBJECT_PLANE:
3a5f87c2
TW		 4365 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4366 property, arg->value);
4d93914a 4367 break;
c543188a
PZ		 4368 }
4369
4370out:
84849903 4371 drm_modeset_unlock_all(dev);
c543188a
PZ		 4372 return ret;
4373}
4374
c8e32cc1
DV		 4375/**
4376 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4377 * @connector: connector to attach
4378 * @encoder: encoder to attach @connector to
4379 *
4380 * This function links up a connector to an encoder. Note that the routing
4381 * restrictions between encoders and crtcs are exposed to userspace through the
4382 * possible_clones and possible_crtcs bitmasks.
4383 *
4384 * Returns:
4385 * Zero on success, errno on failure.
4386 */
f453ba04
DA		 4387int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4388 struct drm_encoder *encoder)
4389{
4390 int i;
4391
4392 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4393 if (connector->encoder_ids[i] == 0) {
4394 connector->encoder_ids[i] = encoder->base.id;
4395 return 0;
4396 }
4397 }
4398 return -ENOMEM;
4399}
4400EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4401
c8e32cc1
DV		 4402/**
4403 * drm_mode_crtc_set_gamma_size - set the gamma table size
4404 * @crtc: CRTC to set the gamma table size for
4405 * @gamma_size: size of the gamma table
4406 *
4407 * Drivers which support gamma tables should set this to the supported gamma
4408 * table size when initializing the CRTC. Currently the drm core only supports a
4409 * fixed gamma table size.
4410 *
4411 * Returns:
4412 * Zero on success, errno on failure.
4413 */
4cae5b84 4414int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 4415 int gamma_size)
f453ba04
DA		 4416{
4417 crtc->gamma_size = gamma_size;
4418
4419 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4420 if (!crtc->gamma_store) {
4421 crtc->gamma_size = 0;
4cae5b84 4422 return -ENOMEM;
f453ba04
DA		 4423 }
4424
4cae5b84 4425 return 0;
f453ba04
DA		 4426}
4427EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4428
c8e32cc1
DV		 4429/**
4430 * drm_mode_gamma_set_ioctl - set the gamma table
4431 * @dev: DRM device
4432 * @data: ioctl data
4433 * @file_priv: DRM file info
4434 *
4435 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4436 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4437 *
4438 * Called by the user via ioctl.
4439 *
4440 * Returns:
4441 * Zero on success, errno on failure.
4442 */
f453ba04
DA		 4443int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4444 void *data, struct drm_file *file_priv)
4445{
4446 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4447 struct drm_crtc *crtc;
4448 void *r_base, *g_base, *b_base;
4449 int size;
4450 int ret = 0;
4451
fb3b06c8
DA		 4452 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4453 return -EINVAL;
4454
84849903 4455 drm_modeset_lock_all(dev);
a2b34e22
RC		 4456 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4457 if (!crtc) {
f27657f2 4458 ret = -ENOENT;
f453ba04
DA		 4459 goto out;
4460 }
f453ba04 4461
ebe0f244
LP		 4462 if (crtc->funcs->gamma_set == NULL) {
4463 ret = -ENOSYS;
4464 goto out;
4465 }
4466
f453ba04
DA		 4467 /* memcpy into gamma store */
4468 if (crtc_lut->gamma_size != crtc->gamma_size) {
4469 ret = -EINVAL;
4470 goto out;
4471 }
4472
4473 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4474 r_base = crtc->gamma_store;
4475 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4476 ret = -EFAULT;
4477 goto out;
4478 }
4479
4480 g_base = r_base + size;
4481 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4482 ret = -EFAULT;
4483 goto out;
4484 }
4485
4486 b_base = g_base + size;
4487 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4488 ret = -EFAULT;
4489 goto out;
4490 }
4491
7203425a 4492 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 4493
4494out:
84849903 4495 drm_modeset_unlock_all(dev);
f453ba04
DA		 4496 return ret;
4497
4498}
4499
c8e32cc1
DV		 4500/**
4501 * drm_mode_gamma_get_ioctl - get the gamma table
4502 * @dev: DRM device
4503 * @data: ioctl data
4504 * @file_priv: DRM file info
4505 *
4506 * Copy the current gamma table into the storage provided. This also provides
4507 * the gamma table size the driver expects, which can be used to size the
4508 * allocated storage.
4509 *
4510 * Called by the user via ioctl.
4511 *
4512 * Returns:
4513 * Zero on success, errno on failure.
4514 */
f453ba04
DA		 4515int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4516 void *data, struct drm_file *file_priv)
4517{
4518 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 4519 struct drm_crtc *crtc;
4520 void *r_base, *g_base, *b_base;
4521 int size;
4522 int ret = 0;
4523
fb3b06c8
DA		 4524 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4525 return -EINVAL;
4526
84849903 4527 drm_modeset_lock_all(dev);
a2b34e22
RC		 4528 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4529 if (!crtc) {
f27657f2 4530 ret = -ENOENT;
f453ba04
DA		 4531 goto out;
4532 }
f453ba04
DA		 4533
4534 /* memcpy into gamma store */
4535 if (crtc_lut->gamma_size != crtc->gamma_size) {
4536 ret = -EINVAL;
4537 goto out;
4538 }
4539
4540 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4541 r_base = crtc->gamma_store;
4542 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4543 ret = -EFAULT;
4544 goto out;
4545 }
4546
4547 g_base = r_base + size;
4548 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4549 ret = -EFAULT;
4550 goto out;
4551 }
4552
4553 b_base = g_base + size;
4554 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4555 ret = -EFAULT;
4556 goto out;
4557 }
4558out:
84849903 4559 drm_modeset_unlock_all(dev);
f453ba04
DA		 4560 return ret;
4561}
d91d8a3f 4562
c8e32cc1
DV		 4563/**
4564 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4565 * @dev: DRM device
4566 * @data: ioctl data
4567 * @file_priv: DRM file info
4568 *
4569 * This schedules an asynchronous update on a given CRTC, called page flip.
4570 * Optionally a drm event is generated to signal the completion of the event.
4571 * Generic drivers cannot assume that a pageflip with changed framebuffer
4572 * properties (including driver specific metadata like tiling layout) will work,
4573 * but some drivers support e.g. pixel format changes through the pageflip
4574 * ioctl.
4575 *
4576 * Called by the user via ioctl.
4577 *
4578 * Returns:
4579 * Zero on success, errno on failure.
4580 */
d91d8a3f
KH		 4581int drm_mode_page_flip_ioctl(struct drm_device *dev,
4582 void *data, struct drm_file *file_priv)
4583{
4584 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 4585 struct drm_crtc *crtc;
3d30a59b 4586 struct drm_framebuffer *fb = NULL;
d91d8a3f
KH		 4587 struct drm_pending_vblank_event *e = NULL;
4588 unsigned long flags;
4589 int ret = -EINVAL;
4590
4591 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4592 page_flip->reserved != 0)
4593 return -EINVAL;
4594
62f2104f
KP		 4595 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4596 return -EINVAL;
4597
a2b34e22
RC		 4598 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4599 if (!crtc)
f27657f2 4600 return -ENOENT;
d91d8a3f 4601
d059f652 4602 drm_modeset_lock_crtc(crtc);
f4510a27 4603 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 4604 /* The framebuffer is currently unbound, presumably
4605 * due to a hotplug event, that userspace has not
4606 * yet discovered.
4607 */
4608 ret = -EBUSY;
4609 goto out;
4610 }
4611
d91d8a3f
KH		 4612 if (crtc->funcs->page_flip == NULL)
4613 goto out;
4614
786b99ed 4615 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 4616 if (!fb) {
4617 ret = -ENOENT;
d91d8a3f 4618 goto out;
37c4e705 4619 }
d91d8a3f 4620
c11e9283
DL		 4621 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4622 if (ret)
5f61bb42 4623 goto out;
5f61bb42 4624
f4510a27 4625 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 4626 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4627 ret = -EINVAL;
4628 goto out;
4629 }
4630
d91d8a3f
KH		 4631 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4632 ret = -ENOMEM;
4633 spin_lock_irqsave(&dev->event_lock, flags);
4634 if (file_priv->event_space < sizeof e->event) {
4635 spin_unlock_irqrestore(&dev->event_lock, flags);
4636 goto out;
4637 }
4638 file_priv->event_space -= sizeof e->event;
4639 spin_unlock_irqrestore(&dev->event_lock, flags);
4640
4641 e = kzalloc(sizeof *e, GFP_KERNEL);
4642 if (e == NULL) {
4643 spin_lock_irqsave(&dev->event_lock, flags);
4644 file_priv->event_space += sizeof e->event;
4645 spin_unlock_irqrestore(&dev->event_lock, flags);
4646 goto out;
4647 }
4648
7bd4d7be 4649 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
d91d8a3f
KH		 4650 e->event.base.length = sizeof e->event;
4651 e->event.user_data = page_flip->user_data;
4652 e->base.event = &e->event.base;
4653 e->base.file_priv = file_priv;
4654 e->base.destroy =
4655 (void (*) (struct drm_pending_event *)) kfree;
4656 }
4657
3d30a59b 4658 crtc->primary->old_fb = crtc->primary->fb;
ed8d1975 4659 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 4660 if (ret) {
aef6a7ee
JS		 4661 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4662 spin_lock_irqsave(&dev->event_lock, flags);
4663 file_priv->event_space += sizeof e->event;
4664 spin_unlock_irqrestore(&dev->event_lock, flags);
4665 kfree(e);
4666 }
b0d12325 4667 /* Keep the old fb, don't unref it. */
3d30a59b 4668 crtc->primary->old_fb = NULL;
b0d12325 4669 } else {
8cf1e981
TR		 4670 /*
4671 * Warn if the driver hasn't properly updated the crtc->fb
4672 * field to reflect that the new framebuffer is now used.
4673 * Failing to do so will screw with the reference counting
4674 * on framebuffers.
4675 */
f4510a27 4676 WARN_ON(crtc->primary->fb != fb);
b0d12325
DV		 4677 /* Unref only the old framebuffer. */
4678 fb = NULL;
d91d8a3f
KH		 4679 }
4680
4681out:
b0d12325
DV		 4682 if (fb)
4683 drm_framebuffer_unreference(fb);
3d30a59b
DV		 4684 if (crtc->primary->old_fb)
4685 drm_framebuffer_unreference(crtc->primary->old_fb);
4686 crtc->primary->old_fb = NULL;
d059f652 4687 drm_modeset_unlock_crtc(crtc);
b4d5e7d1 4688
d91d8a3f
KH		 4689 return ret;
4690}
eb033556 4691
c8e32cc1
DV		 4692/**
4693 * drm_mode_config_reset - call ->reset callbacks
4694 * @dev: drm device
4695 *
4696 * This functions calls all the crtc's, encoder's and connector's ->reset
4697 * callback. Drivers can use this in e.g. their driver load or resume code to
4698 * reset hardware and software state.
4699 */
eb033556
CW		 4700void drm_mode_config_reset(struct drm_device *dev)
4701{
4702 struct drm_crtc *crtc;
2a0d7cfd 4703 struct drm_plane *plane;
eb033556
CW		 4704 struct drm_encoder *encoder;
4705 struct drm_connector *connector;
4706
2a0d7cfd
DV		 4707 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4708 if (plane->funcs->reset)
4709 plane->funcs->reset(plane);
4710
eb033556
CW		 4711 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4712 if (crtc->funcs->reset)
4713 crtc->funcs->reset(crtc);
4714
4715 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4716 if (encoder->funcs->reset)
4717 encoder->funcs->reset(encoder);
4718
5e2cb2f6
DV		 4719 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4720 connector->status = connector_status_unknown;
4721
eb033556
CW		 4722 if (connector->funcs->reset)
4723 connector->funcs->reset(connector);
5e2cb2f6 4724 }
eb033556
CW		 4725}
4726EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 4727
c8e32cc1
DV		 4728/**
4729 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4730 * @dev: DRM device
4731 * @data: ioctl data
4732 * @file_priv: DRM file info
4733 *
4734 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4735 * TTM or something else entirely) and returns the resulting buffer handle. This
4736 * handle can then be wrapped up into a framebuffer modeset object.
4737 *
4738 * Note that userspace is not allowed to use such objects for render
4739 * acceleration - drivers must create their own private ioctls for such a use
4740 * case.
4741 *
4742 * Called by the user via ioctl.
4743 *
4744 * Returns:
4745 * Zero on success, errno on failure.
4746 */
ff72145b
DA		 4747int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4748 void *data, struct drm_file *file_priv)
4749{
4750 struct drm_mode_create_dumb *args = data;
b28cd41f 4751 u32 cpp, stride, size;
ff72145b
DA		 4752
4753 if (!dev->driver->dumb_create)
4754 return -ENOSYS;
b28cd41f
DH		 4755 if (!args->width || !args->height || !args->bpp)
4756 return -EINVAL;
4757
4758 /* overflow checks for 32bit size calculations */
00e72089 4759 /* NOTE: DIV_ROUND_UP() can overflow */
b28cd41f 4760 cpp = DIV_ROUND_UP(args->bpp, 8);
00e72089 4761 if (!cpp || cpp > 0xffffffffU / args->width)
b28cd41f
DH		 4762 return -EINVAL;
4763 stride = cpp * args->width;
4764 if (args->height > 0xffffffffU / stride)
4765 return -EINVAL;
4766
4767 /* test for wrap-around */
4768 size = args->height * stride;
4769 if (PAGE_ALIGN(size) == 0)
4770 return -EINVAL;
4771
ff72145b
DA		 4772 return dev->driver->dumb_create(file_priv, dev, args);
4773}
4774
c8e32cc1
DV		 4775/**
4776 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4777 * @dev: DRM device
4778 * @data: ioctl data
4779 * @file_priv: DRM file info
4780 *
4781 * Allocate an offset in the drm device node's address space to be able to
4782 * memory map a dumb buffer.
4783 *
4784 * Called by the user via ioctl.
4785 *
4786 * Returns:
4787 * Zero on success, errno on failure.
4788 */
ff72145b
DA		 4789int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4790 void *data, struct drm_file *file_priv)
4791{
4792 struct drm_mode_map_dumb *args = data;
4793
4794 /* call driver ioctl to get mmap offset */
4795 if (!dev->driver->dumb_map_offset)
4796 return -ENOSYS;
4797
4798 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4799}
4800
c8e32cc1
DV		 4801/**
4802 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4803 * @dev: DRM device
4804 * @data: ioctl data
4805 * @file_priv: DRM file info
4806 *
4807 * This destroys the userspace handle for the given dumb backing storage buffer.
4808 * Since buffer objects must be reference counted in the kernel a buffer object
4809 * won't be immediately freed if a framebuffer modeset object still uses it.
4810 *
4811 * Called by the user via ioctl.
4812 *
4813 * Returns:
4814 * Zero on success, errno on failure.
4815 */
ff72145b
DA		 4816int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4817 void *data, struct drm_file *file_priv)
4818{
4819 struct drm_mode_destroy_dumb *args = data;
4820
4821 if (!dev->driver->dumb_destroy)
4822 return -ENOSYS;
4823
4824 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4825}
248dbc23 4826
c8e32cc1
DV		 4827/**
4828 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4829 * @format: pixel format (DRM_FORMAT_*)
4830 * @depth: storage for the depth value
4831 * @bpp: storage for the bpp value
4832 *
4833 * This only supports RGB formats here for compat with code that doesn't use
4834 * pixel formats directly yet.
248dbc23
DA		 4835 */
4836void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4837 int *bpp)
4838{
4839 switch (format) {
c51a6bc5 4840 case DRM_FORMAT_C8:
04b3924d
VS		 4841 case DRM_FORMAT_RGB332:
4842 case DRM_FORMAT_BGR233:
248dbc23
DA		 4843 *depth = 8;
4844 *bpp = 8;
4845 break;
04b3924d
VS		 4846 case DRM_FORMAT_XRGB1555:
4847 case DRM_FORMAT_XBGR1555:
4848 case DRM_FORMAT_RGBX5551:
4849 case DRM_FORMAT_BGRX5551:
4850 case DRM_FORMAT_ARGB1555:
4851 case DRM_FORMAT_ABGR1555:
4852 case DRM_FORMAT_RGBA5551:
4853 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 4854 *depth = 15;
4855 *bpp = 16;
4856 break;
04b3924d
VS		 4857 case DRM_FORMAT_RGB565:
4858 case DRM_FORMAT_BGR565:
248dbc23
DA		 4859 *depth = 16;
4860 *bpp = 16;
4861 break;
04b3924d
VS		 4862 case DRM_FORMAT_RGB888:
4863 case DRM_FORMAT_BGR888:
4864 *depth = 24;
4865 *bpp = 24;
4866 break;
4867 case DRM_FORMAT_XRGB8888:
4868 case DRM_FORMAT_XBGR8888:
4869 case DRM_FORMAT_RGBX8888:
4870 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 4871 *depth = 24;
4872 *bpp = 32;
4873 break;
04b3924d
VS		 4874 case DRM_FORMAT_XRGB2101010:
4875 case DRM_FORMAT_XBGR2101010:
4876 case DRM_FORMAT_RGBX1010102:
4877 case DRM_FORMAT_BGRX1010102:
4878 case DRM_FORMAT_ARGB2101010:
4879 case DRM_FORMAT_ABGR2101010:
4880 case DRM_FORMAT_RGBA1010102:
4881 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 4882 *depth = 30;
4883 *bpp = 32;
4884 break;
04b3924d
VS		 4885 case DRM_FORMAT_ARGB8888:
4886 case DRM_FORMAT_ABGR8888:
4887 case DRM_FORMAT_RGBA8888:
4888 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 4889 *depth = 32;
4890 *bpp = 32;
4891 break;
4892 default:
23c453a4
VS		 4893 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4894 drm_get_format_name(format));
248dbc23
DA		 4895 *depth = 0;
4896 *bpp = 0;
4897 break;
4898 }
4899}
4900EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 4901
4902/**
4903 * drm_format_num_planes - get the number of planes for format
4904 * @format: pixel format (DRM_FORMAT_*)
4905 *
c8e32cc1 4906 * Returns:
141670e9
VS		 4907 * The number of planes used by the specified pixel format.
4908 */
4909int drm_format_num_planes(uint32_t format)
4910{
4911 switch (format) {
4912 case DRM_FORMAT_YUV410:
4913 case DRM_FORMAT_YVU410:
4914 case DRM_FORMAT_YUV411:
4915 case DRM_FORMAT_YVU411:
4916 case DRM_FORMAT_YUV420:
4917 case DRM_FORMAT_YVU420:
4918 case DRM_FORMAT_YUV422:
4919 case DRM_FORMAT_YVU422:
4920 case DRM_FORMAT_YUV444:
4921 case DRM_FORMAT_YVU444:
4922 return 3;
4923 case DRM_FORMAT_NV12:
4924 case DRM_FORMAT_NV21:
4925 case DRM_FORMAT_NV16:
4926 case DRM_FORMAT_NV61:
ba623f6a
LP		 4927 case DRM_FORMAT_NV24:
4928 case DRM_FORMAT_NV42:
141670e9
VS		 4929 return 2;
4930 default:
4931 return 1;
4932 }
4933}
4934EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 4935
4936/**
4937 * drm_format_plane_cpp - determine the bytes per pixel value
4938 * @format: pixel format (DRM_FORMAT_*)
4939 * @plane: plane index
4940 *
c8e32cc1 4941 * Returns:
5a86bd55
VS		 4942 * The bytes per pixel value for the specified plane.
4943 */
4944int drm_format_plane_cpp(uint32_t format, int plane)
4945{
4946 unsigned int depth;
4947 int bpp;
4948
4949 if (plane >= drm_format_num_planes(format))
4950 return 0;
4951
4952 switch (format) {
4953 case DRM_FORMAT_YUYV:
4954 case DRM_FORMAT_YVYU:
4955 case DRM_FORMAT_UYVY:
4956 case DRM_FORMAT_VYUY:
4957 return 2;
4958 case DRM_FORMAT_NV12:
4959 case DRM_FORMAT_NV21:
4960 case DRM_FORMAT_NV16:
4961 case DRM_FORMAT_NV61:
ba623f6a
LP		 4962 case DRM_FORMAT_NV24:
4963 case DRM_FORMAT_NV42:
5a86bd55
VS		 4964 return plane ? 2 : 1;
4965 case DRM_FORMAT_YUV410:
4966 case DRM_FORMAT_YVU410:
4967 case DRM_FORMAT_YUV411:
4968 case DRM_FORMAT_YVU411:
4969 case DRM_FORMAT_YUV420:
4970 case DRM_FORMAT_YVU420:
4971 case DRM_FORMAT_YUV422:
4972 case DRM_FORMAT_YVU422:
4973 case DRM_FORMAT_YUV444:
4974 case DRM_FORMAT_YVU444:
4975 return 1;
4976 default:
4977 drm_fb_get_bpp_depth(format, &depth, &bpp);
4978 return bpp >> 3;
4979 }
4980}
4981EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 4982
4983/**
4984 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4985 * @format: pixel format (DRM_FORMAT_*)
4986 *
c8e32cc1 4987 * Returns:
01b68b04
VS		 4988 * The horizontal chroma subsampling factor for the
4989 * specified pixel format.
4990 */
4991int drm_format_horz_chroma_subsampling(uint32_t format)
4992{
4993 switch (format) {
4994 case DRM_FORMAT_YUV411:
4995 case DRM_FORMAT_YVU411:
4996 case DRM_FORMAT_YUV410:
4997 case DRM_FORMAT_YVU410:
4998 return 4;
4999 case DRM_FORMAT_YUYV:
5000 case DRM_FORMAT_YVYU:
5001 case DRM_FORMAT_UYVY:
5002 case DRM_FORMAT_VYUY:
5003 case DRM_FORMAT_NV12:
5004 case DRM_FORMAT_NV21:
5005 case DRM_FORMAT_NV16:
5006 case DRM_FORMAT_NV61:
5007 case DRM_FORMAT_YUV422:
5008 case DRM_FORMAT_YVU422:
5009 case DRM_FORMAT_YUV420:
5010 case DRM_FORMAT_YVU420:
5011 return 2;
5012 default:
5013 return 1;
5014 }
5015}
5016EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5017
5018/**
5019 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5020 * @format: pixel format (DRM_FORMAT_*)
5021 *
c8e32cc1 5022 * Returns:
01b68b04
VS		 5023 * The vertical chroma subsampling factor for the
5024 * specified pixel format.
5025 */
5026int drm_format_vert_chroma_subsampling(uint32_t format)
5027{
5028 switch (format) {
5029 case DRM_FORMAT_YUV410:
5030 case DRM_FORMAT_YVU410:
5031 return 4;
5032 case DRM_FORMAT_YUV420:
5033 case DRM_FORMAT_YVU420:
5034 case DRM_FORMAT_NV12:
5035 case DRM_FORMAT_NV21:
5036 return 2;
5037 default:
5038 return 1;
5039 }
5040}
5041EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3 5042
3c9855f6
VS		 5043/**
5044 * drm_rotation_simplify() - Try to simplify the rotation
5045 * @rotation: Rotation to be simplified
5046 * @supported_rotations: Supported rotations
5047 *
5048 * Attempt to simplify the rotation to a form that is supported.
5049 * Eg. if the hardware supports everything except DRM_REFLECT_X
5050 * one could call this function like this:
5051 *
5052 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5053 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5054 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5055 *
5056 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5057 * transforms the hardware supports, this function may not
5058 * be able to produce a supported transform, so the caller should
5059 * check the result afterwards.
5060 */
5061unsigned int drm_rotation_simplify(unsigned int rotation,
5062 unsigned int supported_rotations)
5063{
5064 if (rotation & ~supported_rotations) {
5065 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5066 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5067 }
5068
5069 return rotation;
5070}
5071EXPORT_SYMBOL(drm_rotation_simplify);
5072
87d24fc3
LP		 5073/**
5074 * drm_mode_config_init - initialize DRM mode_configuration structure
5075 * @dev: DRM device
5076 *
5077 * Initialize @dev's mode_config structure, used for tracking the graphics
5078 * configuration of @dev.
5079 *
5080 * Since this initializes the modeset locks, no locking is possible. Which is no
5081 * problem, since this should happen single threaded at init time. It is the
5082 * driver's problem to ensure this guarantee.
5083 *
5084 */
5085void drm_mode_config_init(struct drm_device *dev)
5086{
5087 mutex_init(&dev->mode_config.mutex);
51fd371b 5088 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5089 mutex_init(&dev->mode_config.idr_mutex);
5090 mutex_init(&dev->mode_config.fb_lock);
5091 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5092 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5093 INIT_LIST_HEAD(&dev->mode_config.connector_list);
3b336ec4 5094 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
87d24fc3
LP		 5095 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5096 INIT_LIST_HEAD(&dev->mode_config.property_list);
5097 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5098 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5099 idr_init(&dev->mode_config.crtc_idr);
5100
5101 drm_modeset_lock_all(dev);
5102 drm_mode_create_standard_connector_properties(dev);
9922ab5a 5103 drm_mode_create_standard_plane_properties(dev);
87d24fc3
LP		 5104 drm_modeset_unlock_all(dev);
5105
5106 /* Just to be sure */
5107 dev->mode_config.num_fb = 0;
5108 dev->mode_config.num_connector = 0;
5109 dev->mode_config.num_crtc = 0;
5110 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 5111 dev->mode_config.num_overlay_plane = 0;
5112 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 5113}
5114EXPORT_SYMBOL(drm_mode_config_init);
5115
5116/**
5117 * drm_mode_config_cleanup - free up DRM mode_config info
5118 * @dev: DRM device
5119 *
5120 * Free up all the connectors and CRTCs associated with this DRM device, then
5121 * free up the framebuffers and associated buffer objects.
5122 *
5123 * Note that since this /should/ happen single-threaded at driver/device
5124 * teardown time, no locking is required. It's the driver's job to ensure that
5125 * this guarantee actually holds true.
5126 *
5127 * FIXME: cleanup any dangling user buffer objects too
5128 */
5129void drm_mode_config_cleanup(struct drm_device *dev)
5130{
5131 struct drm_connector *connector, *ot;
5132 struct drm_crtc *crtc, *ct;
5133 struct drm_encoder *encoder, *enct;
3b336ec4 5134 struct drm_bridge *bridge, *brt;
87d24fc3
LP		 5135 struct drm_framebuffer *fb, *fbt;
5136 struct drm_property *property, *pt;
5137 struct drm_property_blob *blob, *bt;
5138 struct drm_plane *plane, *plt;
5139
5140 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5141 head) {
5142 encoder->funcs->destroy(encoder);
5143 }
5144
3b336ec4
SP		 5145 list_for_each_entry_safe(bridge, brt,
5146 &dev->mode_config.bridge_list, head) {
5147 bridge->funcs->destroy(bridge);
5148 }
5149
87d24fc3
LP		 5150 list_for_each_entry_safe(connector, ot,
5151 &dev->mode_config.connector_list, head) {
5152 connector->funcs->destroy(connector);
5153 }
5154
5155 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5156 head) {
5157 drm_property_destroy(dev, property);
5158 }
5159
5160 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5161 head) {
5162 drm_property_destroy_blob(dev, blob);
5163 }
5164
5165 /*
5166 * Single-threaded teardown context, so it's not required to grab the
5167 * fb_lock to protect against concurrent fb_list access. Contrary, it
5168 * would actually deadlock with the drm_framebuffer_cleanup function.
5169 *
5170 * Also, if there are any framebuffers left, that's a driver leak now,
5171 * so politely WARN about this.
5172 */
5173 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5174 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5175 drm_framebuffer_remove(fb);
5176 }
5177
5178 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5179 head) {
5180 plane->funcs->destroy(plane);
5181 }
5182
5183 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5184 crtc->funcs->destroy(crtc);
5185 }
5186
5187 idr_destroy(&dev->mode_config.crtc_idr);
51fd371b 5188 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5189}
5190EXPORT_SYMBOL(drm_mode_config_cleanup);
c1df5f3c
VS		 5191
5192struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5193 unsigned int supported_rotations)
5194{
5195 static const struct drm_prop_enum_list props[] = {
5196 { DRM_ROTATE_0, "rotate-0" },
5197 { DRM_ROTATE_90, "rotate-90" },
5198 { DRM_ROTATE_180, "rotate-180" },
5199 { DRM_ROTATE_270, "rotate-270" },
5200 { DRM_REFLECT_X, "reflect-x" },
5201 { DRM_REFLECT_Y, "reflect-y" },
5202 };
5203
5204 return drm_property_create_bitmask(dev, 0, "rotation",
5205 props, ARRAY_SIZE(props),
5206 supported_rotations);
5207}
5208EXPORT_SYMBOL(drm_mode_create_rotation_property);
Linux 6.x block layer and io_uring tree(s)