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drm: Don't prepare or cleanup unchanging frame buffers [v3]
[deliverable/linux.git] / drivers / gpu / drm / drm_crtc.c
CommitLineData
f453ba04
DA		 1/*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
6ba6d03e 32#include <linux/ctype.h>
f453ba04 33#include <linux/list.h>
5a0e3ad6 34#include <linux/slab.h>
2d1a8a48 35#include <linux/export.h>
760285e7
DH		 36#include <drm/drmP.h>
37#include <drm/drm_crtc.h>
38#include <drm/drm_edid.h>
39#include <drm/drm_fourcc.h>
51fd371b 40#include <drm/drm_modeset_lock.h>
88a48e29 41#include <drm/drm_atomic.h>
3b96a0b1 42#include <drm/drm_auth.h>
f453ba04 43
8bd441b2 44#include "drm_crtc_internal.h"
67d0ec4e 45#include "drm_internal.h"
8bd441b2 46
9a6f5130
CW		 47static struct drm_framebuffer *
48internal_framebuffer_create(struct drm_device *dev,
1eb83451 49 const struct drm_mode_fb_cmd2 *r,
9a6f5130 50 struct drm_file *file_priv);
c394c2b0 51
f453ba04
DA		 52/* Avoid boilerplate. I'm tired of typing. */
53#define DRM_ENUM_NAME_FN(fnname, list) \
d20d3174 54 const char *fnname(int val) \
f453ba04
DA		 55 { \
56 int i; \
57 for (i = 0; i < ARRAY_SIZE(list); i++) { \
58 if (list[i].type == val) \
59 return list[i].name; \
60 } \
61 return "(unknown)"; \
62 }
63
64/*
65 * Global properties
66 */
4dfd909f
TR		 67static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
68 { DRM_MODE_DPMS_ON, "On" },
f453ba04
DA		 69 { DRM_MODE_DPMS_STANDBY, "Standby" },
70 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
71 { DRM_MODE_DPMS_OFF, "Off" }
72};
73
74DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
75
4dfd909f 76static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
9922ab5a
RC		 77 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
78 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
79 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
80};
81
f453ba04
DA		 82/*
83 * Optional properties
84 */
4dfd909f 85static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
53bd8389
JB		 86 { DRM_MODE_SCALE_NONE, "None" },
87 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
88 { DRM_MODE_SCALE_CENTER, "Center" },
89 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 90};
91
ff587e45
VK		 92static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
93 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
94 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
95 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
96};
97
f453ba04
DA		 98/*
99 * Non-global properties, but "required" for certain connectors.
100 */
4dfd909f 101static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
f453ba04
DA		 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
4dfd909f 109static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
f453ba04
DA		 110 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
111 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
112 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
113};
114
115DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
116 drm_dvi_i_subconnector_enum_list)
117
4dfd909f 118static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
f453ba04
DA		 119 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
120 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 123 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 124};
125
126DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
127
4dfd909f 128static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
f453ba04
DA		 129 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
130 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
132 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 133 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 134};
135
136DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
137 drm_tv_subconnector_enum_list)
138
d20d3174 139static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
884840aa
JB		 140 { DRM_MODE_DIRTY_OFF, "Off" },
141 { DRM_MODE_DIRTY_ON, "On" },
142 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
143};
144
f453ba04
DA		 145struct drm_conn_prop_enum_list {
146 int type;
d20d3174 147 const char *name;
b21e3afe 148 struct ida ida;
f453ba04
DA		 149};
150
151/*
152 * Connector and encoder types.
153 */
4dfd909f
TR		 154static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
155 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
b21e3afe
IM		 156 { DRM_MODE_CONNECTOR_VGA, "VGA" },
157 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
158 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
159 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
160 { DRM_MODE_CONNECTOR_Composite, "Composite" },
161 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
162 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
163 { DRM_MODE_CONNECTOR_Component, "Component" },
164 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
165 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
166 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
167 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
168 { DRM_MODE_CONNECTOR_TV, "TV" },
169 { DRM_MODE_CONNECTOR_eDP, "eDP" },
170 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
b8923273 171 { DRM_MODE_CONNECTOR_DSI, "DSI" },
0b27c02a 172 { DRM_MODE_CONNECTOR_DPI, "DPI" },
f453ba04
DA		 173};
174
4dfd909f
TR		 175static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
176 { DRM_MODE_ENCODER_NONE, "None" },
f453ba04
DA		 177 { DRM_MODE_ENCODER_DAC, "DAC" },
178 { DRM_MODE_ENCODER_TMDS, "TMDS" },
179 { DRM_MODE_ENCODER_LVDS, "LVDS" },
180 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 181 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
b8923273 182 { DRM_MODE_ENCODER_DSI, "DSI" },
182407a6 183 { DRM_MODE_ENCODER_DPMST, "DP MST" },
0b27c02a 184 { DRM_MODE_ENCODER_DPI, "DPI" },
f453ba04
DA		 185};
186
4dfd909f 187static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
ac1bb36c
JB		 188 { SubPixelUnknown, "Unknown" },
189 { SubPixelHorizontalRGB, "Horizontal RGB" },
190 { SubPixelHorizontalBGR, "Horizontal BGR" },
191 { SubPixelVerticalRGB, "Vertical RGB" },
192 { SubPixelVerticalBGR, "Vertical BGR" },
193 { SubPixelNone, "None" },
194};
195
b21e3afe
IM		 196void drm_connector_ida_init(void)
197{
198 int i;
199
200 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
201 ida_init(&drm_connector_enum_list[i].ida);
202}
203
204void drm_connector_ida_destroy(void)
205{
206 int i;
207
208 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
209 ida_destroy(&drm_connector_enum_list[i].ida);
210}
211
c8e32cc1
DV		 212/**
213 * drm_get_connector_status_name - return a string for connector status
214 * @status: connector status to compute name of
215 *
216 * In contrast to the other drm_get_*_name functions this one here returns a
217 * const pointer and hence is threadsafe.
218 */
d20d3174 219const char *drm_get_connector_status_name(enum drm_connector_status status)
f453ba04
DA		 220{
221 if (status == connector_status_connected)
222 return "connected";
223 else if (status == connector_status_disconnected)
224 return "disconnected";
225 else
226 return "unknown";
227}
ed7951dc 228EXPORT_SYMBOL(drm_get_connector_status_name);
f453ba04 229
ac1bb36c
JB		 230/**
231 * drm_get_subpixel_order_name - return a string for a given subpixel enum
232 * @order: enum of subpixel_order
233 *
234 * Note you could abuse this and return something out of bounds, but that
235 * would be a caller error. No unscrubbed user data should make it here.
236 */
237const char *drm_get_subpixel_order_name(enum subpixel_order order)
238{
239 return drm_subpixel_enum_list[order].name;
240}
241EXPORT_SYMBOL(drm_get_subpixel_order_name);
242
2ee39452
DA		 243/*
244 * Internal function to assign a slot in the object idr and optionally
245 * register the object into the idr.
246 */
247static int drm_mode_object_get_reg(struct drm_device *dev,
248 struct drm_mode_object *obj,
249 uint32_t obj_type,
d0f37cf6
DA		 250 bool register_obj,
251 void (*obj_free_cb)(struct kref *kref))
2ee39452
DA		 252{
253 int ret;
254
255 mutex_lock(&dev->mode_config.idr_mutex);
256 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
257 if (ret >= 0) {
258 /*
259 * Set up the object linking under the protection of the idr
260 * lock so that other users can't see inconsistent state.
261 */
262 obj->id = ret;
263 obj->type = obj_type;
d0f37cf6
DA		 264 if (obj_free_cb) {
265 obj->free_cb = obj_free_cb;
266 kref_init(&obj->refcount);
267 }
2ee39452
DA		 268 }
269 mutex_unlock(&dev->mode_config.idr_mutex);
270
271 return ret < 0 ? ret : 0;
272}
273
f453ba04 274/**
065a50ed 275 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 276 * @dev: DRM device
065a50ed
DV		 277 * @obj: object pointer, used to generate unique ID
278 * @obj_type: object type
f453ba04 279 *
f453ba04 280 * Create a unique identifier based on @ptr in @dev's identifier space. Used
c8e32cc1
DV		 281 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
282 * modeset identifiers are _not_ reference counted. Hence don't use this for
283 * reference counted modeset objects like framebuffers.
f453ba04 284 *
c8e32cc1 285 * Returns:
3c67d839 286 * Zero on success, error code on failure.
f453ba04 287 */
8bd441b2
DV		 288int drm_mode_object_get(struct drm_device *dev,
289 struct drm_mode_object *obj, uint32_t obj_type)
f453ba04 290{
d0f37cf6 291 return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
2ee39452 292}
f453ba04 293
2ee39452
DA		 294static void drm_mode_object_register(struct drm_device *dev,
295 struct drm_mode_object *obj)
296{
ad2563c2 297 mutex_lock(&dev->mode_config.idr_mutex);
2ee39452 298 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
ad2563c2 299 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 300}
301
302/**
7c8f6d25 303 * drm_mode_object_unregister - free a modeset identifer
f453ba04 304 * @dev: DRM device
065a50ed 305 * @object: object to free
f453ba04 306 *
7c8f6d25
DA		 307 * Free @id from @dev's unique identifier pool.
308 * This function can be called multiple times, and guards against
309 * multiple removals.
310 * These modeset identifiers are _not_ reference counted. Hence don't use this
c8e32cc1 311 * for reference counted modeset objects like framebuffers.
f453ba04 312 */
7c8f6d25 313void drm_mode_object_unregister(struct drm_device *dev,
8bd441b2 314 struct drm_mode_object *object)
f453ba04 315{
ad2563c2 316 mutex_lock(&dev->mode_config.idr_mutex);
7c8f6d25
DA		 317 if (object->id) {
318 idr_remove(&dev->mode_config.crtc_idr, object->id);
319 object->id = 0;
320 }
ad2563c2 321 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 322}
323
98f75de4
RC		 324static struct drm_mode_object *_object_find(struct drm_device *dev,
325 uint32_t id, uint32_t type)
326{
327 struct drm_mode_object *obj = NULL;
328
329 mutex_lock(&dev->mode_config.idr_mutex);
330 obj = idr_find(&dev->mode_config.crtc_idr, id);
168c02ec
DV		 331 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
332 obj = NULL;
333 if (obj && obj->id != id)
334 obj = NULL;
72fe90b8
DA		 335
336 if (obj && obj->free_cb) {
337 if (!kref_get_unless_zero(&obj->refcount))
338 obj = NULL;
339 }
98f75de4
RC		 340 mutex_unlock(&dev->mode_config.idr_mutex);
341
342 return obj;
343}
344
786b99ed
DV		 345/**
346 * drm_mode_object_find - look up a drm object with static lifetime
347 * @dev: drm device
348 * @id: id of the mode object
349 * @type: type of the mode object
350 *
05981422
DV		 351 * This function is used to look up a modeset object. It will acquire a
352 * reference for reference counted objects. This reference must be dropped again
353 * by callind drm_mode_object_unreference().
786b99ed 354 */
7a9c9060
DV		 355struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
356 uint32_t id, uint32_t type)
f453ba04 357{
ad2563c2 358 struct drm_mode_object *obj = NULL;
f453ba04 359
98f75de4 360 obj = _object_find(dev, id, type);
f453ba04
DA		 361 return obj;
362}
363EXPORT_SYMBOL(drm_mode_object_find);
364
05981422
DV		 365/**
366 * drm_mode_object_unreference - decr the object refcnt
367 * @obj: mode_object
368 *
369 * This functions decrements the object's refcount if it is a refcounted modeset
370 * object. It is a no-op on any other object. This is used to drop references
371 * acquired with drm_mode_object_reference().
372 */
d0f37cf6
DA		 373void drm_mode_object_unreference(struct drm_mode_object *obj)
374{
375 if (obj->free_cb) {
376 DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
377 kref_put(&obj->refcount, obj->free_cb);
378 }
379}
380EXPORT_SYMBOL(drm_mode_object_unreference);
381
382/**
05981422 383 * drm_mode_object_reference - incr the object refcnt
d0f37cf6
DA		 384 * @obj: mode_object
385 *
05981422
DV		 386 * This functions increments the object's refcount if it is a refcounted modeset
387 * object. It is a no-op on any other object. References should be dropped again
388 * by calling drm_mode_object_unreference().
d0f37cf6
DA		 389 */
390void drm_mode_object_reference(struct drm_mode_object *obj)
391{
392 if (obj->free_cb) {
393 DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
394 kref_get(&obj->refcount);
395 }
396}
397EXPORT_SYMBOL(drm_mode_object_reference);
398
6a0d9528
LW		 399/**
400 * drm_crtc_force_disable - Forcibly turn off a CRTC
401 * @crtc: CRTC to turn off
402 *
403 * Returns:
404 * Zero on success, error code on failure.
405 */
406int drm_crtc_force_disable(struct drm_crtc *crtc)
407{
408 struct drm_mode_set set = {
409 .crtc = crtc,
410 };
411
412 return drm_mode_set_config_internal(&set);
413}
414EXPORT_SYMBOL(drm_crtc_force_disable);
415
416/**
417 * drm_crtc_force_disable_all - Forcibly turn off all enabled CRTCs
418 * @dev: DRM device whose CRTCs to turn off
419 *
420 * Drivers may want to call this on unload to ensure that all displays are
421 * unlit and the GPU is in a consistent, low power state. Takes modeset locks.
422 *
423 * Returns:
424 * Zero on success, error code on failure.
425 */
426int drm_crtc_force_disable_all(struct drm_device *dev)
427{
428 struct drm_crtc *crtc;
429 int ret = 0;
430
431 drm_modeset_lock_all(dev);
432 drm_for_each_crtc(crtc, dev)
433 if (crtc->enabled) {
434 ret = drm_crtc_force_disable(crtc);
435 if (ret)
436 goto out;
437 }
438out:
439 drm_modeset_unlock_all(dev);
440 return ret;
441}
442EXPORT_SYMBOL(drm_crtc_force_disable_all);
443
f55f1f91
DA		 444static void drm_framebuffer_free(struct kref *kref)
445{
446 struct drm_framebuffer *fb =
d0f37cf6 447 container_of(kref, struct drm_framebuffer, base.refcount);
f55f1f91
DA		 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 */
19ab3f8b 454 drm_mode_object_unregister(dev, &fb->base);
f55f1f91
DA		 455
456 fb->funcs->destroy(fb);
457}
458
f453ba04
DA		 459/**
460 * drm_framebuffer_init - initialize a framebuffer
461 * @dev: DRM device
065a50ed
DV		 462 * @fb: framebuffer to be initialized
463 * @funcs: ... with these functions
f453ba04 464 *
f453ba04
DA		 465 * Allocates an ID for the framebuffer's parent mode object, sets its mode
466 * functions & device file and adds it to the master fd list.
467 *
4b096ac1
DV		 468 * IMPORTANT:
469 * This functions publishes the fb and makes it available for concurrent access
470 * by other users. Which means by this point the fb _must_ be fully set up -
471 * since all the fb attributes are invariant over its lifetime, no further
472 * locking but only correct reference counting is required.
473 *
c8e32cc1 474 * Returns:
af901ca1 475 * Zero on success, error code on failure.
f453ba04
DA		 476 */
477int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
478 const struct drm_framebuffer_funcs *funcs)
479{
480 int ret;
481
4b096ac1
DV		 482 INIT_LIST_HEAD(&fb->filp_head);
483 fb->dev = dev;
484 fb->funcs = funcs;
f7eff60e 485
d0f37cf6 486 ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB,
9cd47424 487 false, drm_framebuffer_free);
6bfc56aa 488 if (ret)
4b096ac1 489 goto out;
f453ba04 490
9cd47424 491 mutex_lock(&dev->mode_config.fb_lock);
f453ba04
DA		 492 dev->mode_config.num_fb++;
493 list_add(&fb->head, &dev->mode_config.fb_list);
2ddea3fd 494 mutex_unlock(&dev->mode_config.fb_lock);
f453ba04 495
9cd47424 496 drm_mode_object_register(dev, &fb->base);
9cd47424 497out:
3c67d839 498 return ret;
f453ba04
DA		 499}
500EXPORT_SYMBOL(drm_framebuffer_init);
501
786b99ed
DV		 502/**
503 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
504 * @dev: drm device
505 * @id: id of the fb object
506 *
507 * If successful, this grabs an additional reference to the framebuffer -
508 * callers need to make sure to eventually unreference the returned framebuffer
c8e32cc1 509 * again, using @drm_framebuffer_unreference.
786b99ed
DV		 510 */
511struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
512 uint32_t id)
513{
cee26ac4
DA		 514 struct drm_mode_object *obj;
515 struct drm_framebuffer *fb = NULL;
786b99ed 516
cee26ac4 517 obj = _object_find(dev, id, DRM_MODE_OBJECT_FB);
72fe90b8 518 if (obj)
cee26ac4 519 fb = obj_to_fb(obj);
786b99ed
DV		 520 return fb;
521}
522EXPORT_SYMBOL(drm_framebuffer_lookup);
523
36206361
DV		 524/**
525 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
526 * @fb: fb to unregister
527 *
528 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
529 * those used for fbdev. Note that the caller must hold a reference of it's own,
530 * i.e. the object may not be destroyed through this call (since it'll lead to a
531 * locking inversion).
532 */
533void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
534{
a39a357c
DV		 535 struct drm_device *dev;
536
537 if (!fb)
538 return;
539
540 dev = fb->dev;
2b677e8c 541
2b677e8c 542 /* Mark fb as reaped and drop idr ref. */
19ab3f8b 543 drm_mode_object_unregister(dev, &fb->base);
36206361
DV		 544}
545EXPORT_SYMBOL(drm_framebuffer_unregister_private);
546
f453ba04
DA		 547/**
548 * drm_framebuffer_cleanup - remove a framebuffer object
549 * @fb: framebuffer to remove
550 *
c8e32cc1
DV		 551 * Cleanup framebuffer. This function is intended to be used from the drivers
552 * ->destroy callback. It can also be used to clean up driver private
2e7a5701 553 * framebuffers embedded into a larger structure.
36206361
DV		 554 *
555 * Note that this function does not remove the fb from active usuage - if it is
556 * still used anywhere, hilarity can ensue since userspace could call getfb on
557 * the id and get back -EINVAL. Obviously no concern at driver unload time.
558 *
559 * Also, the framebuffer will not be removed from the lookup idr - for
560 * user-created framebuffers this will happen in in the rmfb ioctl. For
561 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
562 * drm_framebuffer_unregister_private.
f453ba04
DA		 563 */
564void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
f7eff60e
RC		 565{
566 struct drm_device *dev = fb->dev;
8faf6b18 567
4b096ac1 568 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e
RC		 569 list_del(&fb->head);
570 dev->mode_config.num_fb--;
4b096ac1 571 mutex_unlock(&dev->mode_config.fb_lock);
f7eff60e
RC		 572}
573EXPORT_SYMBOL(drm_framebuffer_cleanup);
574
575/**
576 * drm_framebuffer_remove - remove and unreference a framebuffer object
577 * @fb: framebuffer to remove
578 *
f7eff60e 579 * Scans all the CRTCs and planes in @dev's mode_config. If they're
36206361 580 * using @fb, removes it, setting it to NULL. Then drops the reference to the
b62584e3
DV		 581 * passed-in framebuffer. Might take the modeset locks.
582 *
583 * Note that this function optimizes the cleanup away if the caller holds the
584 * last reference to the framebuffer. It is also guaranteed to not take the
585 * modeset locks in this case.
f7eff60e
RC		 586 */
587void drm_framebuffer_remove(struct drm_framebuffer *fb)
f453ba04 588{
a39a357c 589 struct drm_device *dev;
f453ba04 590 struct drm_crtc *crtc;
8cf5c917 591 struct drm_plane *plane;
f453ba04 592
a39a357c
DV		 593 if (!fb)
594 return;
595
596 dev = fb->dev;
597
4b096ac1 598 WARN_ON(!list_empty(&fb->filp_head));
8faf6b18 599
b62584e3
DV		 600 /*
601 * drm ABI mandates that we remove any deleted framebuffers from active
602 * useage. But since most sane clients only remove framebuffers they no
603 * longer need, try to optimize this away.
604 *
605 * Since we're holding a reference ourselves, observing a refcount of 1
606 * means that we're the last holder and can skip it. Also, the refcount
607 * can never increase from 1 again, so we don't need any barriers or
608 * locks.
609 *
610 * Note that userspace could try to race with use and instate a new
611 * usage _after_ we've cleared all current ones. End result will be an
612 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
613 * in this manner.
614 */
747a598f 615 if (drm_framebuffer_read_refcount(fb) > 1) {
b62584e3
DV		 616 drm_modeset_lock_all(dev);
617 /* remove from any CRTC */
6295d607 618 drm_for_each_crtc(crtc, dev) {
f4510a27 619 if (crtc->primary->fb == fb) {
b62584e3 620 /* should turn off the crtc */
3e31d24d 621 if (drm_crtc_force_disable(crtc))
b62584e3
DV		 622 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
623 }
5ef5f72f 624 }
f453ba04 625
6295d607 626 drm_for_each_plane(plane, dev) {
9125e618
VS		 627 if (plane->fb == fb)
628 drm_plane_force_disable(plane);
8cf5c917 629 }
b62584e3 630 drm_modeset_unlock_all(dev);
8cf5c917
JB		 631 }
632
f7eff60e 633 drm_framebuffer_unreference(fb);
f453ba04 634}
f7eff60e 635EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04 636
51fd371b
RC		 637DEFINE_WW_CLASS(crtc_ww_class);
638
fa3ab4c2
VS		 639static unsigned int drm_num_crtcs(struct drm_device *dev)
640{
641 unsigned int num = 0;
642 struct drm_crtc *tmp;
643
644 drm_for_each_crtc(tmp, dev) {
645 num++;
646 }
647
648 return num;
649}
650
79190ea2
BG		 651static int drm_crtc_register_all(struct drm_device *dev)
652{
653 struct drm_crtc *crtc;
654 int ret = 0;
655
656 drm_for_each_crtc(crtc, dev) {
657 if (crtc->funcs->late_register)
658 ret = crtc->funcs->late_register(crtc);
659 if (ret)
660 return ret;
661 }
662
663 return 0;
664}
665
666static void drm_crtc_unregister_all(struct drm_device *dev)
667{
668 struct drm_crtc *crtc;
669
670 drm_for_each_crtc(crtc, dev) {
671 if (crtc->funcs->early_unregister)
672 crtc->funcs->early_unregister(crtc);
673 }
674}
675
f453ba04 676/**
e13161af
MR		 677 * drm_crtc_init_with_planes - Initialise a new CRTC object with
678 * specified primary and cursor planes.
f453ba04
DA		 679 * @dev: DRM device
680 * @crtc: CRTC object to init
e13161af
MR		 681 * @primary: Primary plane for CRTC
682 * @cursor: Cursor plane for CRTC
f453ba04 683 * @funcs: callbacks for the new CRTC
f9882876 684 * @name: printf style format string for the CRTC name, or NULL for default name
f453ba04 685 *
ad6f5c34 686 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 687 *
c8e32cc1 688 * Returns:
6bfc56aa 689 * Zero on success, error code on failure.
f453ba04 690 */
e13161af
MR		 691int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
692 struct drm_plane *primary,
fc1d3e44 693 struct drm_plane *cursor,
f9882876
VS		 694 const struct drm_crtc_funcs *funcs,
695 const char *name, ...)
f453ba04 696{
51fd371b 697 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 698 int ret;
699
522cf91f
BG		 700 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
701 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
702
f453ba04
DA		 703 crtc->dev = dev;
704 crtc->funcs = funcs;
705
3b24f7d6
DV		 706 INIT_LIST_HEAD(&crtc->commit_list);
707 spin_lock_init(&crtc->commit_lock);
708
51fd371b 709 drm_modeset_lock_init(&crtc->mutex);
6bfc56aa
VS		 710 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
711 if (ret)
baf698b0 712 return ret;
f453ba04 713
fa3ab4c2
VS		 714 if (name) {
715 va_list ap;
716
717 va_start(ap, name);
718 crtc->name = kvasprintf(GFP_KERNEL, name, ap);
719 va_end(ap);
720 } else {
721 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
722 drm_num_crtcs(dev));
723 }
724 if (!crtc->name) {
7c8f6d25 725 drm_mode_object_unregister(dev, &crtc->base);
fa3ab4c2
VS		 726 return -ENOMEM;
727 }
728
bffd9de0
PZ		 729 crtc->base.properties = &crtc->properties;
730
51fd371b 731 list_add_tail(&crtc->head, &config->crtc_list);
490d3d1b 732 crtc->index = config->num_crtc++;
6bfc56aa 733
e13161af 734 crtc->primary = primary;
fc1d3e44 735 crtc->cursor = cursor;
e13161af
MR		 736 if (primary)
737 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
fc1d3e44
MR		 738 if (cursor)
739 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
e13161af 740
eab3bbef
DV		 741 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
742 drm_object_attach_property(&crtc->base, config->prop_active, 0);
955f3c33 743 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
eab3bbef
DV		 744 }
745
baf698b0 746 return 0;
f453ba04 747}
e13161af 748EXPORT_SYMBOL(drm_crtc_init_with_planes);
f453ba04
DA		 749
750/**
ad6f5c34 751 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 752 * @crtc: CRTC to cleanup
753 *
ad6f5c34
VS		 754 * This function cleans up @crtc and removes it from the DRM mode setting
755 * core. Note that the function does *not* free the crtc structure itself,
756 * this is the responsibility of the caller.
f453ba04
DA		 757 */
758void drm_crtc_cleanup(struct drm_crtc *crtc)
759{
760 struct drm_device *dev = crtc->dev;
761
490d3d1b
CW		 762 /* Note that the crtc_list is considered to be static; should we
763 * remove the drm_crtc at runtime we would have to decrement all
764 * the indices on the drm_crtc after us in the crtc_list.
765 */
766
9e1c156f
SK		 767 kfree(crtc->gamma_store);
768 crtc->gamma_store = NULL;
f453ba04 769
51fd371b
RC		 770 drm_modeset_lock_fini(&crtc->mutex);
771
7c8f6d25 772 drm_mode_object_unregister(dev, &crtc->base);
f453ba04
DA		 773 list_del(&crtc->head);
774 dev->mode_config.num_crtc--;
3009c037
TR		 775
776 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
777 if (crtc->state && crtc->funcs->atomic_destroy_state)
778 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
a18c0af1 779
fa3ab4c2
VS		 780 kfree(crtc->name);
781
a18c0af1 782 memset(crtc, 0, sizeof(*crtc));
f453ba04
DA		 783}
784EXPORT_SYMBOL(drm_crtc_cleanup);
785
86f422d5 786/*
f453ba04
DA		 787 * drm_mode_remove - remove and free a mode
788 * @connector: connector list to modify
789 * @mode: mode to remove
790 *
f453ba04
DA		 791 * Remove @mode from @connector's mode list, then free it.
792 */
86f422d5
LD		 793static void drm_mode_remove(struct drm_connector *connector,
794 struct drm_display_mode *mode)
f453ba04
DA		 795{
796 list_del(&mode->head);
554f1d78 797 drm_mode_destroy(connector->dev, mode);
f453ba04 798}
f453ba04 799
b5571e9d
BB		 800/**
801 * drm_display_info_set_bus_formats - set the supported bus formats
802 * @info: display info to store bus formats in
e37bfa1a
BB		 803 * @formats: array containing the supported bus formats
804 * @num_formats: the number of entries in the fmts array
b5571e9d
BB		 805 *
806 * Store the supported bus formats in display info structure.
807 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
808 * a full list of available formats.
809 */
810int drm_display_info_set_bus_formats(struct drm_display_info *info,
811 const u32 *formats,
812 unsigned int num_formats)
813{
814 u32 *fmts = NULL;
815
816 if (!formats && num_formats)
817 return -EINVAL;
818
819 if (formats && num_formats) {
820 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
821 GFP_KERNEL);
944579c5 822 if (!fmts)
b5571e9d
BB		 823 return -ENOMEM;
824 }
825
826 kfree(info->bus_formats);
827 info->bus_formats = fmts;
828 info->num_bus_formats = num_formats;
829
830 return 0;
831}
832EXPORT_SYMBOL(drm_display_info_set_bus_formats);
833
eaf99c74
CW		 834/**
835 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
836 * @connector: connector to quwery
eaf99c74
CW		 837 *
838 * The kernel supports per-connector configration of its consoles through
839 * use of the video= parameter. This function parses that option and
840 * extracts the user's specified mode (or enable/disable status) for a
841 * particular connector. This is typically only used during the early fbdev
842 * setup.
843 */
844static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
845{
846 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
847 char *option = NULL;
848
849 if (fb_get_options(connector->name, &option))
850 return;
851
852 if (!drm_mode_parse_command_line_for_connector(option,
853 connector,
854 mode))
855 return;
856
857 if (mode->force) {
858 const char *s;
859
860 switch (mode->force) {
861 case DRM_FORCE_OFF:
862 s = "OFF";
863 break;
864 case DRM_FORCE_ON_DIGITAL:
865 s = "ON - dig";
866 break;
867 default:
868 case DRM_FORCE_ON:
869 s = "ON";
870 break;
871 }
872
873 DRM_INFO("forcing %s connector %s\n", connector->name, s);
874 connector->force = mode->force;
875 }
876
877 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
878 connector->name,
879 mode->xres, mode->yres,
880 mode->refresh_specified ? mode->refresh : 60,
881 mode->rb ? " reduced blanking" : "",
882 mode->margins ? " with margins" : "",
883 mode->interlace ? " interlaced" : "");
884}
885
b164d31f
DA		 886static void drm_connector_free(struct kref *kref)
887{
888 struct drm_connector *connector =
889 container_of(kref, struct drm_connector, base.refcount);
890 struct drm_device *dev = connector->dev;
891
892 drm_mode_object_unregister(dev, &connector->base);
893 connector->funcs->destroy(connector);
894}
895
f453ba04
DA		 896/**
897 * drm_connector_init - Init a preallocated connector
898 * @dev: DRM device
899 * @connector: the connector to init
900 * @funcs: callbacks for this connector
065a50ed 901 * @connector_type: user visible type of the connector
f453ba04 902 *
f453ba04
DA		 903 * Initialises a preallocated connector. Connectors should be
904 * subclassed as part of driver connector objects.
6bfc56aa 905 *
c8e32cc1 906 * Returns:
6bfc56aa 907 * Zero on success, error code on failure.
f453ba04 908 */
6bfc56aa
VS		 909int drm_connector_init(struct drm_device *dev,
910 struct drm_connector *connector,
911 const struct drm_connector_funcs *funcs,
912 int connector_type)
f453ba04 913{
ae16c597 914 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa 915 int ret;
b21e3afe
IM		 916 struct ida *connector_ida =
917 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 918
84849903 919 drm_modeset_lock_all(dev);
f453ba04 920
b164d31f
DA		 921 ret = drm_mode_object_get_reg(dev, &connector->base,
922 DRM_MODE_OBJECT_CONNECTOR,
923 false, drm_connector_free);
6bfc56aa 924 if (ret)
2abdd313 925 goto out_unlock;
6bfc56aa 926
7e3bdf4a 927 connector->base.properties = &connector->properties;
f453ba04
DA		 928 connector->dev = dev;
929 connector->funcs = funcs;
5fff80bb 930
69425599
DV		 931 ret = ida_simple_get(&config->connector_ida, 0, 0, GFP_KERNEL);
932 if (ret < 0)
5fff80bb 933 goto out_put;
69425599
DV		 934 connector->index = ret;
935 ret = 0;
5fff80bb 936
f453ba04
DA		 937 connector->connector_type = connector_type;
938 connector->connector_type_id =
b21e3afe
IM		 939 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
940 if (connector->connector_type_id < 0) {
941 ret = connector->connector_type_id;
5fff80bb 942 goto out_put_id;
b21e3afe 943 }
2abdd313
JN		 944 connector->name =
945 kasprintf(GFP_KERNEL, "%s-%d",
946 drm_connector_enum_list[connector_type].name,
947 connector->connector_type_id);
948 if (!connector->name) {
949 ret = -ENOMEM;
5fff80bb 950 goto out_put_type_id;
2abdd313
JN		 951 }
952
f453ba04
DA		 953 INIT_LIST_HEAD(&connector->probed_modes);
954 INIT_LIST_HEAD(&connector->modes);
955 connector->edid_blob_ptr = NULL;
5e2cb2f6 956 connector->status = connector_status_unknown;
f453ba04 957
eaf99c74
CW		 958 drm_connector_get_cmdline_mode(connector);
959
c7eb76f4
DV		 960 /* We should add connectors at the end to avoid upsetting the connector
961 * index too much. */
ae16c597
RC		 962 list_add_tail(&connector->head, &config->connector_list);
963 config->num_connector++;
f453ba04 964
a7331e5c 965 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 966 drm_object_attach_property(&connector->base,
ae16c597 967 config->edid_property,
a7331e5c 968 0);
f453ba04 969
58495563 970 drm_object_attach_property(&connector->base,
ae16c597
RC		 971 config->dpms_property, 0);
972
973 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
974 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
975 }
f453ba04 976
30f65707 977 connector->debugfs_entry = NULL;
5fff80bb
ML		 978out_put_type_id:
979 if (ret)
980 ida_remove(connector_ida, connector->connector_type_id);
981out_put_id:
982 if (ret)
69425599 983 ida_remove(&config->connector_ida, connector->index);
2abdd313
JN		 984out_put:
985 if (ret)
7c8f6d25 986 drm_mode_object_unregister(dev, &connector->base);
2abdd313
JN		 987
988out_unlock:
84849903 989 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 990
991 return ret;
f453ba04
DA		 992}
993EXPORT_SYMBOL(drm_connector_init);
994
995/**
996 * drm_connector_cleanup - cleans up an initialised connector
997 * @connector: connector to cleanup
998 *
f453ba04
DA		 999 * Cleans up the connector but doesn't free the object.
1000 */
1001void drm_connector_cleanup(struct drm_connector *connector)
1002{
1003 struct drm_device *dev = connector->dev;
1004 struct drm_display_mode *mode, *t;
1005
80de3461
CW		 1006 /* The connector should have been removed from userspace long before
1007 * it is finally destroyed.
1008 */
1009 if (WARN_ON(connector->registered))
1010 drm_connector_unregister(connector);
1011
40d9b043
DA		 1012 if (connector->tile_group) {
1013 drm_mode_put_tile_group(dev, connector->tile_group);
1014 connector->tile_group = NULL;
1015 }
1016
f453ba04
DA		 1017 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
1018 drm_mode_remove(connector, mode);
1019
1020 list_for_each_entry_safe(mode, t, &connector->modes, head)
1021 drm_mode_remove(connector, mode);
1022
b21e3afe
IM		 1023 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
1024 connector->connector_type_id);
1025
5fff80bb 1026 ida_remove(&dev->mode_config.connector_ida,
69425599 1027 connector->index);
5fff80bb 1028
b5571e9d 1029 kfree(connector->display_info.bus_formats);
7c8f6d25 1030 drm_mode_object_unregister(dev, &connector->base);
2abdd313
JN		 1031 kfree(connector->name);
1032 connector->name = NULL;
f453ba04 1033 list_del(&connector->head);
6380c509 1034 dev->mode_config.num_connector--;
3009c037
TR		 1035
1036 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
1037 if (connector->state && connector->funcs->atomic_destroy_state)
1038 connector->funcs->atomic_destroy_state(connector,
1039 connector->state);
a18c0af1
TR		 1040
1041 memset(connector, 0, sizeof(*connector));
f453ba04
DA		 1042}
1043EXPORT_SYMBOL(drm_connector_cleanup);
1044
34ea3d38
TW		 1045/**
1046 * drm_connector_register - register a connector
1047 * @connector: the connector to register
1048 *
1049 * Register userspace interfaces for a connector
1050 *
1051 * Returns:
1052 * Zero on success, error code on failure.
1053 */
1054int drm_connector_register(struct drm_connector *connector)
1055{
30f65707
TW		 1056 int ret;
1057
40daac61
CW		 1058 if (connector->registered)
1059 return 0;
1060
30f65707
TW		 1061 ret = drm_sysfs_connector_add(connector);
1062 if (ret)
1063 return ret;
1064
1065 ret = drm_debugfs_connector_add(connector);
1066 if (ret) {
aaf285e2
CW		 1067 goto err_sysfs;
1068 }
1069
1070 if (connector->funcs->late_register) {
1071 ret = connector->funcs->late_register(connector);
1072 if (ret)
1073 goto err_debugfs;
30f65707
TW		 1074 }
1075
fdf2c85f
DV		 1076 drm_mode_object_register(connector->dev, &connector->base);
1077
40daac61 1078 connector->registered = true;
30f65707 1079 return 0;
aaf285e2
CW		 1080
1081err_debugfs:
1082 drm_debugfs_connector_remove(connector);
1083err_sysfs:
1084 drm_sysfs_connector_remove(connector);
1085 return ret;
34ea3d38
TW		 1086}
1087EXPORT_SYMBOL(drm_connector_register);
1088
1089/**
1090 * drm_connector_unregister - unregister a connector
1091 * @connector: the connector to unregister
1092 *
1093 * Unregister userspace interfaces for a connector
1094 */
1095void drm_connector_unregister(struct drm_connector *connector)
1096{
40daac61
CW		 1097 if (!connector->registered)
1098 return;
1099
aaf285e2
CW		 1100 if (connector->funcs->early_unregister)
1101 connector->funcs->early_unregister(connector);
1102
34ea3d38 1103 drm_sysfs_connector_remove(connector);
30f65707 1104 drm_debugfs_connector_remove(connector);
40daac61
CW		 1105
1106 connector->registered = false;
34ea3d38
TW		 1107}
1108EXPORT_SYMBOL(drm_connector_unregister);
1109
6100598c
CW		 1110static void drm_connector_unregister_all(struct drm_device *dev)
1111{
1112 struct drm_connector *connector;
1113
1114 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1115 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1116 drm_connector_unregister(connector);
1117}
1118
041401ff 1119static int drm_connector_register_all(struct drm_device *dev)
54d2c2da
AB		 1120{
1121 struct drm_connector *connector;
1122 int ret;
1123
1124 mutex_lock(&dev->mode_config.mutex);
1125
1126 drm_for_each_connector(connector, dev) {
1127 ret = drm_connector_register(connector);
1128 if (ret)
1129 goto err;
1130 }
1131
1132 mutex_unlock(&dev->mode_config.mutex);
1133
1134 return 0;
1135
1136err:
1137 mutex_unlock(&dev->mode_config.mutex);
1138 drm_connector_unregister_all(dev);
1139 return ret;
1140}
54d2c2da 1141
79190ea2
BG		 1142static int drm_encoder_register_all(struct drm_device *dev)
1143{
1144 struct drm_encoder *encoder;
1145 int ret = 0;
1146
1147 drm_for_each_encoder(encoder, dev) {
1148 if (encoder->funcs->late_register)
1149 ret = encoder->funcs->late_register(encoder);
1150 if (ret)
1151 return ret;
1152 }
1153
1154 return 0;
1155}
1156
1157static void drm_encoder_unregister_all(struct drm_device *dev)
1158{
1159 struct drm_encoder *encoder;
1160
1161 drm_for_each_encoder(encoder, dev) {
1162 if (encoder->funcs->early_unregister)
1163 encoder->funcs->early_unregister(encoder);
1164 }
1165}
1166
c8e32cc1
DV		 1167/**
1168 * drm_encoder_init - Init a preallocated encoder
1169 * @dev: drm device
1170 * @encoder: the encoder to init
1171 * @funcs: callbacks for this encoder
1172 * @encoder_type: user visible type of the encoder
13a3d91f 1173 * @name: printf style format string for the encoder name, or NULL for default name
c8e32cc1
DV		 1174 *
1175 * Initialises a preallocated encoder. Encoder should be
1176 * subclassed as part of driver encoder objects.
1177 *
1178 * Returns:
1179 * Zero on success, error code on failure.
1180 */
6bfc56aa 1181int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 1182 struct drm_encoder *encoder,
1183 const struct drm_encoder_funcs *funcs,
13a3d91f 1184 int encoder_type, const char *name, ...)
f453ba04 1185{
6bfc56aa
VS		 1186 int ret;
1187
84849903 1188 drm_modeset_lock_all(dev);
f453ba04 1189
6bfc56aa
VS		 1190 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1191 if (ret)
e5748946 1192 goto out_unlock;
f453ba04 1193
6bfc56aa 1194 encoder->dev = dev;
f453ba04
DA		 1195 encoder->encoder_type = encoder_type;
1196 encoder->funcs = funcs;
86bf546b
VS		 1197 if (name) {
1198 va_list ap;
1199
1200 va_start(ap, name);
1201 encoder->name = kvasprintf(GFP_KERNEL, name, ap);
1202 va_end(ap);
1203 } else {
1204 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1205 drm_encoder_enum_list[encoder_type].name,
1206 encoder->base.id);
1207 }
e5748946
JN		 1208 if (!encoder->name) {
1209 ret = -ENOMEM;
1210 goto out_put;
1211 }
f453ba04
DA		 1212
1213 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
490d3d1b 1214 encoder->index = dev->mode_config.num_encoder++;
f453ba04 1215
e5748946
JN		 1216out_put:
1217 if (ret)
7c8f6d25 1218 drm_mode_object_unregister(dev, &encoder->base);
e5748946
JN		 1219
1220out_unlock:
84849903 1221 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 1222
1223 return ret;
f453ba04
DA		 1224}
1225EXPORT_SYMBOL(drm_encoder_init);
1226
c8e32cc1
DV		 1227/**
1228 * drm_encoder_cleanup - cleans up an initialised encoder
1229 * @encoder: encoder to cleanup
1230 *
1231 * Cleans up the encoder but doesn't free the object.
1232 */
f453ba04
DA		 1233void drm_encoder_cleanup(struct drm_encoder *encoder)
1234{
1235 struct drm_device *dev = encoder->dev;
4dfd909f 1236
490d3d1b
CW		 1237 /* Note that the encoder_list is considered to be static; should we
1238 * remove the drm_encoder at runtime we would have to decrement all
1239 * the indices on the drm_encoder after us in the encoder_list.
1240 */
1241
84849903 1242 drm_modeset_lock_all(dev);
7c8f6d25 1243 drm_mode_object_unregister(dev, &encoder->base);
e5748946 1244 kfree(encoder->name);
f453ba04 1245 list_del(&encoder->head);
6380c509 1246 dev->mode_config.num_encoder--;
84849903 1247 drm_modeset_unlock_all(dev);
a18c0af1
TR		 1248
1249 memset(encoder, 0, sizeof(*encoder));
f453ba04
DA		 1250}
1251EXPORT_SYMBOL(drm_encoder_cleanup);
1252
9f4c97a2
VS		 1253static unsigned int drm_num_planes(struct drm_device *dev)
1254{
1255 unsigned int num = 0;
1256 struct drm_plane *tmp;
1257
1258 drm_for_each_plane(tmp, dev) {
1259 num++;
1260 }
1261
1262 return num;
1263}
1264
35f2c3ae 1265/**
dc415ff9 1266 * drm_universal_plane_init - Initialize a new universal plane object
35f2c3ae
VS		 1267 * @dev: DRM device
1268 * @plane: plane object to init
1269 * @possible_crtcs: bitmask of possible CRTCs
1270 * @funcs: callbacks for the new plane
1271 * @formats: array of supported formats (%DRM_FORMAT_*)
1272 * @format_count: number of elements in @formats
dc415ff9 1273 * @type: type of plane (overlay, primary, cursor)
b0b3b795 1274 * @name: printf style format string for the plane name, or NULL for default name
35f2c3ae 1275 *
dc415ff9 1276 * Initializes a plane object of type @type.
35f2c3ae 1277 *
c8e32cc1 1278 * Returns:
35f2c3ae
VS		 1279 * Zero on success, error code on failure.
1280 */
dc415ff9
MR		 1281int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1282 unsigned long possible_crtcs,
1283 const struct drm_plane_funcs *funcs,
45e3743a 1284 const uint32_t *formats, unsigned int format_count,
b0b3b795
VS		 1285 enum drm_plane_type type,
1286 const char *name, ...)
8cf5c917 1287{
6b4959f4 1288 struct drm_mode_config *config = &dev->mode_config;
6bfc56aa
VS		 1289 int ret;
1290
6bfc56aa
VS		 1291 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1292 if (ret)
baf698b0 1293 return ret;
6bfc56aa 1294
4d02e2de
DV		 1295 drm_modeset_lock_init(&plane->mutex);
1296
4d93914a 1297 plane->base.properties = &plane->properties;
8cf5c917 1298 plane->dev = dev;
8cf5c917 1299 plane->funcs = funcs;
2f6c5389
TR		 1300 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1301 GFP_KERNEL);
8cf5c917
JB		 1302 if (!plane->format_types) {
1303 DRM_DEBUG_KMS("out of memory when allocating plane\n");
7c8f6d25 1304 drm_mode_object_unregister(dev, &plane->base);
baf698b0 1305 return -ENOMEM;
8cf5c917
JB		 1306 }
1307
9f4c97a2
VS		 1308 if (name) {
1309 va_list ap;
1310
1311 va_start(ap, name);
1312 plane->name = kvasprintf(GFP_KERNEL, name, ap);
1313 va_end(ap);
1314 } else {
1315 plane->name = kasprintf(GFP_KERNEL, "plane-%d",
1316 drm_num_planes(dev));
1317 }
1318 if (!plane->name) {
1319 kfree(plane->format_types);
7c8f6d25 1320 drm_mode_object_unregister(dev, &plane->base);
9f4c97a2
VS		 1321 return -ENOMEM;
1322 }
1323
308e5bcb 1324 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1325 plane->format_count = format_count;
1326 plane->possible_crtcs = possible_crtcs;
dc415ff9 1327 plane->type = type;
8cf5c917 1328
6b4959f4 1329 list_add_tail(&plane->head, &config->plane_list);
490d3d1b 1330 plane->index = config->num_total_plane++;
dc415ff9 1331 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
6b4959f4 1332 config->num_overlay_plane++;
8cf5c917 1333
9922ab5a 1334 drm_object_attach_property(&plane->base,
6b4959f4 1335 config->plane_type_property,
9922ab5a
RC		 1336 plane->type);
1337
6b4959f4
RC		 1338 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1339 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1340 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1341 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1342 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1343 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1344 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1345 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1346 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1347 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1348 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1349 }
1350
baf698b0 1351 return 0;
8cf5c917 1352}
dc415ff9
MR		 1353EXPORT_SYMBOL(drm_universal_plane_init);
1354
79190ea2
BG		 1355static int drm_plane_register_all(struct drm_device *dev)
1356{
1357 struct drm_plane *plane;
1358 int ret = 0;
1359
1360 drm_for_each_plane(plane, dev) {
1361 if (plane->funcs->late_register)
1362 ret = plane->funcs->late_register(plane);
1363 if (ret)
1364 return ret;
1365 }
1366
1367 return 0;
1368}
1369
1370static void drm_plane_unregister_all(struct drm_device *dev)
1371{
1372 struct drm_plane *plane;
1373
1374 drm_for_each_plane(plane, dev) {
1375 if (plane->funcs->early_unregister)
1376 plane->funcs->early_unregister(plane);
1377 }
1378}
1379
dc415ff9
MR		 1380/**
1381 * drm_plane_init - Initialize a legacy plane
1382 * @dev: DRM device
1383 * @plane: plane object to init
1384 * @possible_crtcs: bitmask of possible CRTCs
1385 * @funcs: callbacks for the new plane
1386 * @formats: array of supported formats (%DRM_FORMAT_*)
1387 * @format_count: number of elements in @formats
1388 * @is_primary: plane type (primary vs overlay)
1389 *
1390 * Legacy API to initialize a DRM plane.
1391 *
1392 * New drivers should call drm_universal_plane_init() instead.
1393 *
1394 * Returns:
1395 * Zero on success, error code on failure.
1396 */
1397int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1398 unsigned long possible_crtcs,
1399 const struct drm_plane_funcs *funcs,
45e3743a 1400 const uint32_t *formats, unsigned int format_count,
dc415ff9
MR		 1401 bool is_primary)
1402{
1403 enum drm_plane_type type;
1404
1405 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1406 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
b0b3b795 1407 formats, format_count, type, NULL);
dc415ff9 1408}
8cf5c917
JB		 1409EXPORT_SYMBOL(drm_plane_init);
1410
35f2c3ae
VS		 1411/**
1412 * drm_plane_cleanup - Clean up the core plane usage
1413 * @plane: plane to cleanup
1414 *
1415 * This function cleans up @plane and removes it from the DRM mode setting
1416 * core. Note that the function does *not* free the plane structure itself,
1417 * this is the responsibility of the caller.
1418 */
8cf5c917
JB		 1419void drm_plane_cleanup(struct drm_plane *plane)
1420{
1421 struct drm_device *dev = plane->dev;
1422
84849903 1423 drm_modeset_lock_all(dev);
8cf5c917 1424 kfree(plane->format_types);
7c8f6d25 1425 drm_mode_object_unregister(dev, &plane->base);
dc415ff9
MR		 1426
1427 BUG_ON(list_empty(&plane->head));
1428
490d3d1b
CW		 1429 /* Note that the plane_list is considered to be static; should we
1430 * remove the drm_plane at runtime we would have to decrement all
1431 * the indices on the drm_plane after us in the plane_list.
1432 */
1433
dc415ff9
MR		 1434 list_del(&plane->head);
1435 dev->mode_config.num_total_plane--;
1436 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1437 dev->mode_config.num_overlay_plane--;
84849903 1438 drm_modeset_unlock_all(dev);
3009c037
TR		 1439
1440 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1441 if (plane->state && plane->funcs->atomic_destroy_state)
1442 plane->funcs->atomic_destroy_state(plane, plane->state);
a18c0af1 1443
9f4c97a2
VS		 1444 kfree(plane->name);
1445
a18c0af1 1446 memset(plane, 0, sizeof(*plane));
8cf5c917
JB		 1447}
1448EXPORT_SYMBOL(drm_plane_cleanup);
1449
f81338a5
CK		 1450/**
1451 * drm_plane_from_index - find the registered plane at an index
1452 * @dev: DRM device
1453 * @idx: index of registered plane to find for
1454 *
1455 * Given a plane index, return the registered plane from DRM device's
1456 * list of planes with matching index.
1457 */
1458struct drm_plane *
1459drm_plane_from_index(struct drm_device *dev, int idx)
1460{
1461 struct drm_plane *plane;
f81338a5 1462
490d3d1b
CW		 1463 drm_for_each_plane(plane, dev)
1464 if (idx == plane->index)
f81338a5 1465 return plane;
490d3d1b 1466
f81338a5
CK		 1467 return NULL;
1468}
1469EXPORT_SYMBOL(drm_plane_from_index);
1470
35f2c3ae
VS		 1471/**
1472 * drm_plane_force_disable - Forcibly disable a plane
1473 * @plane: plane to disable
1474 *
1475 * Forces the plane to be disabled.
1476 *
1477 * Used when the plane's current framebuffer is destroyed,
1478 * and when restoring fbdev mode.
1479 */
9125e618
VS		 1480void drm_plane_force_disable(struct drm_plane *plane)
1481{
1482 int ret;
1483
3d30a59b 1484 if (!plane->fb)
9125e618
VS		 1485 return;
1486
3d30a59b 1487 plane->old_fb = plane->fb;
9125e618 1488 ret = plane->funcs->disable_plane(plane);
731cce48 1489 if (ret) {
9125e618 1490 DRM_ERROR("failed to disable plane with busy fb\n");
3d30a59b 1491 plane->old_fb = NULL;
731cce48
DV		 1492 return;
1493 }
9125e618 1494 /* disconnect the plane from the fb and crtc: */
220dd2bc 1495 drm_framebuffer_unreference(plane->old_fb);
3d30a59b 1496 plane->old_fb = NULL;
9125e618
VS		 1497 plane->fb = NULL;
1498 plane->crtc = NULL;
1499}
1500EXPORT_SYMBOL(drm_plane_force_disable);
1501
79190ea2
BG		 1502int drm_modeset_register_all(struct drm_device *dev)
1503{
1504 int ret;
1505
1506 ret = drm_plane_register_all(dev);
1507 if (ret)
1508 goto err_plane;
1509
1510 ret = drm_crtc_register_all(dev);
1511 if (ret)
1512 goto err_crtc;
1513
1514 ret = drm_encoder_register_all(dev);
1515 if (ret)
1516 goto err_encoder;
1517
1518 ret = drm_connector_register_all(dev);
1519 if (ret)
1520 goto err_connector;
1521
1522 return 0;
1523
1524err_connector:
1525 drm_encoder_unregister_all(dev);
1526err_encoder:
1527 drm_crtc_unregister_all(dev);
1528err_crtc:
1529 drm_plane_unregister_all(dev);
1530err_plane:
1531 return ret;
1532}
1533
1534void drm_modeset_unregister_all(struct drm_device *dev)
1535{
1536 drm_connector_unregister_all(dev);
1537 drm_encoder_unregister_all(dev);
1538 drm_crtc_unregister_all(dev);
1539 drm_plane_unregister_all(dev);
1540}
1541
6b4959f4 1542static int drm_mode_create_standard_properties(struct drm_device *dev)
f453ba04 1543{
356af0e1 1544 struct drm_property *prop;
f453ba04
DA		 1545
1546 /*
1547 * Standard properties (apply to all connectors)
1548 */
356af0e1 1549 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
f453ba04
DA		 1550 DRM_MODE_PROP_IMMUTABLE,
1551 "EDID", 0);
356af0e1
RC		 1552 if (!prop)
1553 return -ENOMEM;
1554 dev->mode_config.edid_property = prop;
f453ba04 1555
356af0e1 1556 prop = drm_property_create_enum(dev, 0,
4a67d391
SH		 1557 "DPMS", drm_dpms_enum_list,
1558 ARRAY_SIZE(drm_dpms_enum_list));
356af0e1
RC		 1559 if (!prop)
1560 return -ENOMEM;
1561 dev->mode_config.dpms_property = prop;
6f134d7b 1562
356af0e1
RC		 1563 prop = drm_property_create(dev,
1564 DRM_MODE_PROP_BLOB |
1565 DRM_MODE_PROP_IMMUTABLE,
1566 "PATH", 0);
1567 if (!prop)
1568 return -ENOMEM;
1569 dev->mode_config.path_property = prop;
f453ba04 1570
356af0e1
RC		 1571 prop = drm_property_create(dev,
1572 DRM_MODE_PROP_BLOB |
1573 DRM_MODE_PROP_IMMUTABLE,
1574 "TILE", 0);
1575 if (!prop)
1576 return -ENOMEM;
1577 dev->mode_config.tile_property = prop;
9922ab5a 1578
6b4959f4 1579 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
9922ab5a
RC		 1580 "type", drm_plane_type_enum_list,
1581 ARRAY_SIZE(drm_plane_type_enum_list));
6b4959f4
RC		 1582 if (!prop)
1583 return -ENOMEM;
1584 dev->mode_config.plane_type_property = prop;
1585
1586 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1587 "SRC_X", 0, UINT_MAX);
1588 if (!prop)
1589 return -ENOMEM;
1590 dev->mode_config.prop_src_x = prop;
1591
1592 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1593 "SRC_Y", 0, UINT_MAX);
1594 if (!prop)
1595 return -ENOMEM;
1596 dev->mode_config.prop_src_y = prop;
1597
1598 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1599 "SRC_W", 0, UINT_MAX);
1600 if (!prop)
1601 return -ENOMEM;
1602 dev->mode_config.prop_src_w = prop;
1603
1604 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1605 "SRC_H", 0, UINT_MAX);
1606 if (!prop)
1607 return -ENOMEM;
1608 dev->mode_config.prop_src_h = prop;
1609
1610 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1611 "CRTC_X", INT_MIN, INT_MAX);
1612 if (!prop)
1613 return -ENOMEM;
1614 dev->mode_config.prop_crtc_x = prop;
1615
1616 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1617 "CRTC_Y", INT_MIN, INT_MAX);
1618 if (!prop)
1619 return -ENOMEM;
1620 dev->mode_config.prop_crtc_y = prop;
1621
1622 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1623 "CRTC_W", 0, INT_MAX);
1624 if (!prop)
1625 return -ENOMEM;
1626 dev->mode_config.prop_crtc_w = prop;
1627
1628 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1629 "CRTC_H", 0, INT_MAX);
1630 if (!prop)
1631 return -ENOMEM;
1632 dev->mode_config.prop_crtc_h = prop;
1633
1634 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1635 "FB_ID", DRM_MODE_OBJECT_FB);
1636 if (!prop)
1637 return -ENOMEM;
1638 dev->mode_config.prop_fb_id = prop;
1639
1640 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1641 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1642 if (!prop)
1643 return -ENOMEM;
1644 dev->mode_config.prop_crtc_id = prop;
9922ab5a 1645
eab3bbef
DV		 1646 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1647 "ACTIVE");
1648 if (!prop)
1649 return -ENOMEM;
1650 dev->mode_config.prop_active = prop;
1651
955f3c33
DS		 1652 prop = drm_property_create(dev,
1653 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1654 "MODE_ID", 0);
1655 if (!prop)
1656 return -ENOMEM;
1657 dev->mode_config.prop_mode_id = prop;
1658
5488dc16
LL		 1659 prop = drm_property_create(dev,
1660 DRM_MODE_PROP_BLOB,
1661 "DEGAMMA_LUT", 0);
1662 if (!prop)
1663 return -ENOMEM;
1664 dev->mode_config.degamma_lut_property = prop;
1665
1666 prop = drm_property_create_range(dev,
1667 DRM_MODE_PROP_IMMUTABLE,
1668 "DEGAMMA_LUT_SIZE", 0, UINT_MAX);
1669 if (!prop)
1670 return -ENOMEM;
1671 dev->mode_config.degamma_lut_size_property = prop;
1672
1673 prop = drm_property_create(dev,
1674 DRM_MODE_PROP_BLOB,
1675 "CTM", 0);
1676 if (!prop)
1677 return -ENOMEM;
1678 dev->mode_config.ctm_property = prop;
1679
1680 prop = drm_property_create(dev,
1681 DRM_MODE_PROP_BLOB,
1682 "GAMMA_LUT", 0);
1683 if (!prop)
1684 return -ENOMEM;
1685 dev->mode_config.gamma_lut_property = prop;
1686
1687 prop = drm_property_create_range(dev,
1688 DRM_MODE_PROP_IMMUTABLE,
1689 "GAMMA_LUT_SIZE", 0, UINT_MAX);
1690 if (!prop)
1691 return -ENOMEM;
1692 dev->mode_config.gamma_lut_size_property = prop;
1693
9922ab5a
RC		 1694 return 0;
1695}
1696
f453ba04
DA		 1697/**
1698 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1699 * @dev: DRM device
1700 *
1701 * Called by a driver the first time a DVI-I connector is made.
1702 */
1703int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1704{
1705 struct drm_property *dvi_i_selector;
1706 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1707
1708 if (dev->mode_config.dvi_i_select_subconnector_property)
1709 return 0;
1710
1711 dvi_i_selector =
4a67d391 1712 drm_property_create_enum(dev, 0,
f453ba04 1713 "select subconnector",
4a67d391 1714 drm_dvi_i_select_enum_list,
f453ba04 1715 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1716 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1717
4a67d391 1718 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1719 "subconnector",
4a67d391 1720 drm_dvi_i_subconnector_enum_list,
f453ba04 1721 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1722 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1723
1724 return 0;
1725}
1726EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1727
1728/**
1729 * drm_create_tv_properties - create TV specific connector properties
1730 * @dev: DRM device
1731 * @num_modes: number of different TV formats (modes) supported
1732 * @modes: array of pointers to strings containing name of each format
1733 *
1734 * Called by a driver's TV initialization routine, this function creates
1735 * the TV specific connector properties for a given device. Caller is
1736 * responsible for allocating a list of format names and passing them to
1737 * this routine.
1738 */
2f763312
TR		 1739int drm_mode_create_tv_properties(struct drm_device *dev,
1740 unsigned int num_modes,
b7c914b3 1741 const char * const modes[])
f453ba04
DA		 1742{
1743 struct drm_property *tv_selector;
1744 struct drm_property *tv_subconnector;
2f763312 1745 unsigned int i;
f453ba04
DA		 1746
1747 if (dev->mode_config.tv_select_subconnector_property)
1748 return 0;
1749
1750 /*
1751 * Basic connector properties
1752 */
4a67d391 1753 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1754 "select subconnector",
4a67d391 1755 drm_tv_select_enum_list,
f453ba04 1756 ARRAY_SIZE(drm_tv_select_enum_list));
48aa1e74
IY		 1757 if (!tv_selector)
1758 goto nomem;
1759
f453ba04
DA		 1760 dev->mode_config.tv_select_subconnector_property = tv_selector;
1761
1762 tv_subconnector =
4a67d391
SH		 1763 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1764 "subconnector",
1765 drm_tv_subconnector_enum_list,
f453ba04 1766 ARRAY_SIZE(drm_tv_subconnector_enum_list));
48aa1e74
IY		 1767 if (!tv_subconnector)
1768 goto nomem;
f453ba04
DA		 1769 dev->mode_config.tv_subconnector_property = tv_subconnector;
1770
1771 /*
1772 * Other, TV specific properties: margins & TV modes.
1773 */
1774 dev->mode_config.tv_left_margin_property =
d9bc3c02 1775 drm_property_create_range(dev, 0, "left margin", 0, 100);
48aa1e74
IY		 1776 if (!dev->mode_config.tv_left_margin_property)
1777 goto nomem;
f453ba04
DA		 1778
1779 dev->mode_config.tv_right_margin_property =
d9bc3c02 1780 drm_property_create_range(dev, 0, "right margin", 0, 100);
48aa1e74
IY		 1781 if (!dev->mode_config.tv_right_margin_property)
1782 goto nomem;
f453ba04
DA		 1783
1784 dev->mode_config.tv_top_margin_property =
d9bc3c02 1785 drm_property_create_range(dev, 0, "top margin", 0, 100);
48aa1e74
IY		 1786 if (!dev->mode_config.tv_top_margin_property)
1787 goto nomem;
f453ba04
DA		 1788
1789 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1790 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
48aa1e74
IY		 1791 if (!dev->mode_config.tv_bottom_margin_property)
1792 goto nomem;
f453ba04
DA		 1793
1794 dev->mode_config.tv_mode_property =
1795 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1796 "mode", num_modes);
48aa1e74
IY		 1797 if (!dev->mode_config.tv_mode_property)
1798 goto nomem;
1799
f453ba04
DA		 1800 for (i = 0; i < num_modes; i++)
1801 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1802 i, modes[i]);
1803
b6b7902e 1804 dev->mode_config.tv_brightness_property =
d9bc3c02 1805 drm_property_create_range(dev, 0, "brightness", 0, 100);
48aa1e74
IY		 1806 if (!dev->mode_config.tv_brightness_property)
1807 goto nomem;
b6b7902e
FJ		 1808
1809 dev->mode_config.tv_contrast_property =
d9bc3c02 1810 drm_property_create_range(dev, 0, "contrast", 0, 100);
48aa1e74
IY		 1811 if (!dev->mode_config.tv_contrast_property)
1812 goto nomem;
b6b7902e
FJ		 1813
1814 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1815 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
48aa1e74
IY		 1816 if (!dev->mode_config.tv_flicker_reduction_property)
1817 goto nomem;
b6b7902e 1818
a75f0236 1819 dev->mode_config.tv_overscan_property =
d9bc3c02 1820 drm_property_create_range(dev, 0, "overscan", 0, 100);
48aa1e74
IY		 1821 if (!dev->mode_config.tv_overscan_property)
1822 goto nomem;
a75f0236
FJ		 1823
1824 dev->mode_config.tv_saturation_property =
d9bc3c02 1825 drm_property_create_range(dev, 0, "saturation", 0, 100);
48aa1e74
IY		 1826 if (!dev->mode_config.tv_saturation_property)
1827 goto nomem;
a75f0236
FJ		 1828
1829 dev->mode_config.tv_hue_property =
d9bc3c02 1830 drm_property_create_range(dev, 0, "hue", 0, 100);
48aa1e74
IY		 1831 if (!dev->mode_config.tv_hue_property)
1832 goto nomem;
a75f0236 1833
f453ba04 1834 return 0;
48aa1e74
IY		 1835nomem:
1836 return -ENOMEM;
f453ba04
DA		 1837}
1838EXPORT_SYMBOL(drm_mode_create_tv_properties);
1839
1840/**
1841 * drm_mode_create_scaling_mode_property - create scaling mode property
1842 * @dev: DRM device
1843 *
1844 * Called by a driver the first time it's needed, must be attached to desired
1845 * connectors.
1846 */
1847int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1848{
1849 struct drm_property *scaling_mode;
f453ba04
DA		 1850
1851 if (dev->mode_config.scaling_mode_property)
1852 return 0;
1853
1854 scaling_mode =
4a67d391
SH		 1855 drm_property_create_enum(dev, 0, "scaling mode",
1856 drm_scaling_mode_enum_list,
f453ba04 1857 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1858
1859 dev->mode_config.scaling_mode_property = scaling_mode;
1860
1861 return 0;
1862}
1863EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1864
ff587e45
VK		 1865/**
1866 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1867 * @dev: DRM device
1868 *
1869 * Called by a driver the first time it's needed, must be attached to desired
1870 * connectors.
1871 *
1872 * Returns:
1a498633 1873 * Zero on success, negative errno on failure.
ff587e45
VK		 1874 */
1875int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1876{
1877 if (dev->mode_config.aspect_ratio_property)
1878 return 0;
1879
1880 dev->mode_config.aspect_ratio_property =
1881 drm_property_create_enum(dev, 0, "aspect ratio",
1882 drm_aspect_ratio_enum_list,
1883 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1884
1885 if (dev->mode_config.aspect_ratio_property == NULL)
1886 return -ENOMEM;
1887
1888 return 0;
1889}
1890EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1891
884840aa
JB		 1892/**
1893 * drm_mode_create_dirty_property - create dirty property
1894 * @dev: DRM device
1895 *
1896 * Called by a driver the first time it's needed, must be attached to desired
1897 * connectors.
1898 */
1899int drm_mode_create_dirty_info_property(struct drm_device *dev)
1900{
1901 struct drm_property *dirty_info;
884840aa
JB		 1902
1903 if (dev->mode_config.dirty_info_property)
1904 return 0;
1905
1906 dirty_info =
4a67d391 1907 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1908 "dirty",
4a67d391 1909 drm_dirty_info_enum_list,
884840aa 1910 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1911 dev->mode_config.dirty_info_property = dirty_info;
1912
1913 return 0;
1914}
1915EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1916
5bb2bbf5
DA		 1917/**
1918 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1919 * @dev: DRM device
1920 *
1921 * Create the the suggested x/y offset property for connectors.
1922 */
1923int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1924{
1925 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1926 return 0;
1927
1928 dev->mode_config.suggested_x_property =
1929 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1930
1931 dev->mode_config.suggested_y_property =
1932 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1933
1934 if (dev->mode_config.suggested_x_property == NULL ||
1935 dev->mode_config.suggested_y_property == NULL)
1936 return -ENOMEM;
1937 return 0;
1938}
1939EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1940
f453ba04
DA		 1941/**
1942 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1943 * @dev: drm device for the ioctl
1944 * @data: data pointer for the ioctl
1945 * @file_priv: drm file for the ioctl call
f453ba04 1946 *
f453ba04
DA		 1947 * Construct a set of configuration description structures and return
1948 * them to the user, including CRTC, connector and framebuffer configuration.
1949 *
1950 * Called by the user via ioctl.
1951 *
c8e32cc1 1952 * Returns:
1a498633 1953 * Zero on success, negative errno on failure.
f453ba04
DA		 1954 */
1955int drm_mode_getresources(struct drm_device *dev, void *data,
1956 struct drm_file *file_priv)
1957{
1958 struct drm_mode_card_res *card_res = data;
1959 struct list_head *lh;
1960 struct drm_framebuffer *fb;
1961 struct drm_connector *connector;
1962 struct drm_crtc *crtc;
1963 struct drm_encoder *encoder;
1964 int ret = 0;
1965 int connector_count = 0;
1966 int crtc_count = 0;
1967 int fb_count = 0;
1968 int encoder_count = 0;
9c7060f7 1969 int copied = 0;
f453ba04
DA		 1970 uint32_t __user *fb_id;
1971 uint32_t __user *crtc_id;
1972 uint32_t __user *connector_id;
1973 uint32_t __user *encoder_id;
f453ba04 1974
fb3b06c8
DA		 1975 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1976 return -EINVAL;
1977
f453ba04 1978
4b096ac1 1979 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1980 /*
1981 * For the non-control nodes we need to limit the list of resources
1982 * by IDs in the group list for this node
1983 */
1984 list_for_each(lh, &file_priv->fbs)
1985 fb_count++;
1986
4b096ac1
DV		 1987 /* handle this in 4 parts */
1988 /* FBs */
1989 if (card_res->count_fbs >= fb_count) {
1990 copied = 0;
1991 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1992 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1993 if (put_user(fb->base.id, fb_id + copied)) {
1994 mutex_unlock(&file_priv->fbs_lock);
1995 return -EFAULT;
1996 }
1997 copied++;
1998 }
1999 }
2000 card_res->count_fbs = fb_count;
2001 mutex_unlock(&file_priv->fbs_lock);
2002
fcf93f69
DV		 2003 /* mode_config.mutex protects the connector list against e.g. DP MST
2004 * connector hot-adding. CRTC/Plane lists are invariant. */
2005 mutex_lock(&dev->mode_config.mutex);
9c7060f7
DV		 2006 drm_for_each_crtc(crtc, dev)
2007 crtc_count++;
f453ba04 2008
9c7060f7
DV		 2009 drm_for_each_connector(connector, dev)
2010 connector_count++;
f453ba04 2011
9c7060f7
DV		 2012 drm_for_each_encoder(encoder, dev)
2013 encoder_count++;
f453ba04
DA		 2014
2015 card_res->max_height = dev->mode_config.max_height;
2016 card_res->min_height = dev->mode_config.min_height;
2017 card_res->max_width = dev->mode_config.max_width;
2018 card_res->min_width = dev->mode_config.min_width;
2019
f453ba04
DA		 2020 /* CRTCs */
2021 if (card_res->count_crtcs >= crtc_count) {
2022 copied = 0;
2023 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
9c7060f7 2024 drm_for_each_crtc(crtc, dev) {
9c7060f7
DV		 2025 if (put_user(crtc->base.id, crtc_id + copied)) {
2026 ret = -EFAULT;
2027 goto out;
f453ba04 2028 }
9c7060f7 2029 copied++;
f453ba04
DA		 2030 }
2031 }
2032 card_res->count_crtcs = crtc_count;
2033
2034 /* Encoders */
2035 if (card_res->count_encoders >= encoder_count) {
2036 copied = 0;
2037 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
9c7060f7 2038 drm_for_each_encoder(encoder, dev) {
9c7060f7
DV		 2039 if (put_user(encoder->base.id, encoder_id +
2040 copied)) {
2041 ret = -EFAULT;
2042 goto out;
f453ba04 2043 }
9c7060f7 2044 copied++;
f453ba04
DA		 2045 }
2046 }
2047 card_res->count_encoders = encoder_count;
2048
2049 /* Connectors */
2050 if (card_res->count_connectors >= connector_count) {
2051 copied = 0;
2052 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
9c7060f7 2053 drm_for_each_connector(connector, dev) {
9c7060f7
DV		 2054 if (put_user(connector->base.id,
2055 connector_id + copied)) {
2056 ret = -EFAULT;
2057 goto out;
f453ba04 2058 }
9c7060f7 2059 copied++;
f453ba04
DA		 2060 }
2061 }
2062 card_res->count_connectors = connector_count;
2063
f453ba04 2064out:
fcf93f69 2065 mutex_unlock(&dev->mode_config.mutex);
f453ba04
DA		 2066 return ret;
2067}
2068
2069/**
2070 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 2071 * @dev: drm device for the ioctl
2072 * @data: data pointer for the ioctl
2073 * @file_priv: drm file for the ioctl call
f453ba04 2074 *
f453ba04
DA		 2075 * Construct a CRTC configuration structure to return to the user.
2076 *
2077 * Called by the user via ioctl.
2078 *
c8e32cc1 2079 * Returns:
1a498633 2080 * Zero on success, negative errno on failure.
f453ba04
DA		 2081 */
2082int drm_mode_getcrtc(struct drm_device *dev,
2083 void *data, struct drm_file *file_priv)
2084{
2085 struct drm_mode_crtc *crtc_resp = data;
2086 struct drm_crtc *crtc;
f453ba04 2087
fb3b06c8
DA		 2088 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2089 return -EINVAL;
2090
a2b34e22 2091 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
fcf93f69
DV		 2092 if (!crtc)
2093 return -ENOENT;
f453ba04 2094
fcf93f69 2095 drm_modeset_lock_crtc(crtc, crtc->primary);
f453ba04 2096 crtc_resp->gamma_size = crtc->gamma_size;
f4510a27
MR		 2097 if (crtc->primary->fb)
2098 crtc_resp->fb_id = crtc->primary->fb->base.id;
f453ba04
DA		 2099 else
2100 crtc_resp->fb_id = 0;
2101
31c946e8
DV		 2102 if (crtc->state) {
2103 crtc_resp->x = crtc->primary->state->src_x >> 16;
2104 crtc_resp->y = crtc->primary->state->src_y >> 16;
2105 if (crtc->state->enable) {
934a8a89 2106 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
31c946e8 2107 crtc_resp->mode_valid = 1;
f453ba04 2108
31c946e8
DV		 2109 } else {
2110 crtc_resp->mode_valid = 0;
2111 }
f453ba04 2112 } else {
31c946e8
DV		 2113 crtc_resp->x = crtc->x;
2114 crtc_resp->y = crtc->y;
2115 if (crtc->enabled) {
934a8a89 2116 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
31c946e8
DV		 2117 crtc_resp->mode_valid = 1;
2118
2119 } else {
2120 crtc_resp->mode_valid = 0;
2121 }
f453ba04 2122 }
fcf93f69 2123 drm_modeset_unlock_crtc(crtc);
f453ba04 2124
baf698b0 2125 return 0;
f453ba04
DA		 2126}
2127
61d8e328
DL		 2128static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2129 const struct drm_file *file_priv)
2130{
2131 /*
2132 * If user-space hasn't configured the driver to expose the stereo 3D
2133 * modes, don't expose them.
2134 */
2135 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2136 return false;
2137
2138 return true;
2139}
2140
abd69c55
DV		 2141static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2142{
2143 /* For atomic drivers only state objects are synchronously updated and
2144 * protected by modeset locks, so check those first. */
2145 if (connector->state)
2146 return connector->state->best_encoder;
2147 return connector->encoder;
2148}
2149
95cbf110 2150/* helper for getconnector and getproperties ioctls */
88a48e29 2151static int get_properties(struct drm_mode_object *obj, bool atomic,
95cbf110
RC		 2152 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2153 uint32_t *arg_count_props)
2154{
88a48e29
RC		 2155 int props_count;
2156 int i, ret, copied;
2157
2158 props_count = obj->properties->count;
2159 if (!atomic)
2160 props_count -= obj->properties->atomic_count;
95cbf110
RC		 2161
2162 if ((*arg_count_props >= props_count) && props_count) {
88a48e29 2163 for (i = 0, copied = 0; copied < props_count; i++) {
95cbf110
RC		 2164 struct drm_property *prop = obj->properties->properties[i];
2165 uint64_t val;
2166
88a48e29
RC		 2167 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2168 continue;
2169
95cbf110
RC		 2170 ret = drm_object_property_get_value(obj, prop, &val);
2171 if (ret)
2172 return ret;
2173
2174 if (put_user(prop->base.id, prop_ptr + copied))
2175 return -EFAULT;
2176
2177 if (put_user(val, prop_values + copied))
2178 return -EFAULT;
2179
2180 copied++;
2181 }
2182 }
2183 *arg_count_props = props_count;
2184
2185 return 0;
2186}
2187
f453ba04
DA		 2188/**
2189 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 2190 * @dev: drm device for the ioctl
2191 * @data: data pointer for the ioctl
2192 * @file_priv: drm file for the ioctl call
f453ba04 2193 *
f453ba04
DA		 2194 * Construct a connector configuration structure to return to the user.
2195 *
2196 * Called by the user via ioctl.
2197 *
c8e32cc1 2198 * Returns:
1a498633 2199 * Zero on success, negative errno on failure.
f453ba04
DA		 2200 */
2201int drm_mode_getconnector(struct drm_device *dev, void *data,
2202 struct drm_file *file_priv)
2203{
2204 struct drm_mode_get_connector *out_resp = data;
f453ba04 2205 struct drm_connector *connector;
abd69c55 2206 struct drm_encoder *encoder;
f453ba04
DA		 2207 struct drm_display_mode *mode;
2208 int mode_count = 0;
f453ba04
DA		 2209 int encoders_count = 0;
2210 int ret = 0;
2211 int copied = 0;
2212 int i;
2213 struct drm_mode_modeinfo u_mode;
2214 struct drm_mode_modeinfo __user *mode_ptr;
f453ba04
DA		 2215 uint32_t __user *encoder_ptr;
2216
fb3b06c8
DA		 2217 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2218 return -EINVAL;
2219
f453ba04
DA		 2220 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2221
7b24056b 2222 mutex_lock(&dev->mode_config.mutex);
f453ba04 2223
b164d31f 2224 connector = drm_connector_lookup(dev, out_resp->connector_id);
a2b34e22 2225 if (!connector) {
f27657f2 2226 ret = -ENOENT;
04bdf441 2227 goto out_unlock;
f453ba04 2228 }
f453ba04 2229
01073b08
TR		 2230 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2231 if (connector->encoder_ids[i] != 0)
f453ba04 2232 encoders_count++;
f453ba04
DA		 2233
2234 if (out_resp->count_modes == 0) {
2235 connector->funcs->fill_modes(connector,
2236 dev->mode_config.max_width,
2237 dev->mode_config.max_height);
2238 }
2239
2240 /* delayed so we get modes regardless of pre-fill_modes state */
2241 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 2242 if (drm_mode_expose_to_userspace(mode, file_priv))
2243 mode_count++;
f453ba04
DA		 2244
2245 out_resp->connector_id = connector->base.id;
2246 out_resp->connector_type = connector->connector_type;
2247 out_resp->connector_type_id = connector->connector_type_id;
2248 out_resp->mm_width = connector->display_info.width_mm;
2249 out_resp->mm_height = connector->display_info.height_mm;
2250 out_resp->subpixel = connector->display_info.subpixel_order;
2251 out_resp->connection = connector->status;
2caa80e7
DV		 2252
2253 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2254 encoder = drm_connector_get_encoder(connector);
2255 if (encoder)
2256 out_resp->encoder_id = encoder->base.id;
f453ba04
DA		 2257 else
2258 out_resp->encoder_id = 0;
2259
2260 /*
2261 * This ioctl is called twice, once to determine how much space is
2262 * needed, and the 2nd time to fill it.
2263 */
2264 if ((out_resp->count_modes >= mode_count) && mode_count) {
2265 copied = 0;
81f6c7f8 2266 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 2267 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 2268 if (!drm_mode_expose_to_userspace(mode, file_priv))
2269 continue;
2270
934a8a89 2271 drm_mode_convert_to_umode(&u_mode, mode);
f453ba04
DA		 2272 if (copy_to_user(mode_ptr + copied,
2273 &u_mode, sizeof(u_mode))) {
2274 ret = -EFAULT;
2275 goto out;
2276 }
2277 copied++;
2278 }
2279 }
2280 out_resp->count_modes = mode_count;
2281
88a48e29 2282 ret = get_properties(&connector->base, file_priv->atomic,
95cbf110
RC		 2283 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2284 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2285 &out_resp->count_props);
2286 if (ret)
2287 goto out;
f453ba04
DA		 2288
2289 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2290 copied = 0;
81f6c7f8 2291 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 2292 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2293 if (connector->encoder_ids[i] != 0) {
2294 if (put_user(connector->encoder_ids[i],
2295 encoder_ptr + copied)) {
2296 ret = -EFAULT;
2297 goto out;
2298 }
2299 copied++;
2300 }
2301 }
2302 }
2303 out_resp->count_encoders = encoders_count;
2304
2305out:
ccfc0865 2306 drm_modeset_unlock(&dev->mode_config.connection_mutex);
04bdf441 2307
b164d31f 2308 drm_connector_unreference(connector);
04bdf441 2309out_unlock:
7b24056b
DV		 2310 mutex_unlock(&dev->mode_config.mutex);
2311
f453ba04
DA		 2312 return ret;
2313}
2314
abd69c55
DV		 2315static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2316{
2317 struct drm_connector *connector;
2318 struct drm_device *dev = encoder->dev;
2319 bool uses_atomic = false;
2320
2321 /* For atomic drivers only state objects are synchronously updated and
2322 * protected by modeset locks, so check those first. */
6295d607 2323 drm_for_each_connector(connector, dev) {
abd69c55
DV		 2324 if (!connector->state)
2325 continue;
2326
2327 uses_atomic = true;
2328
2329 if (connector->state->best_encoder != encoder)
2330 continue;
2331
2332 return connector->state->crtc;
2333 }
2334
2335 /* Don't return stale data (e.g. pending async disable). */
2336 if (uses_atomic)
2337 return NULL;
2338
2339 return encoder->crtc;
2340}
2341
c8e32cc1
DV		 2342/**
2343 * drm_mode_getencoder - get encoder configuration
2344 * @dev: drm device for the ioctl
2345 * @data: data pointer for the ioctl
2346 * @file_priv: drm file for the ioctl call
2347 *
2348 * Construct a encoder configuration structure to return to the user.
2349 *
2350 * Called by the user via ioctl.
2351 *
2352 * Returns:
1a498633 2353 * Zero on success, negative errno on failure.
c8e32cc1 2354 */
f453ba04
DA		 2355int drm_mode_getencoder(struct drm_device *dev, void *data,
2356 struct drm_file *file_priv)
2357{
2358 struct drm_mode_get_encoder *enc_resp = data;
f453ba04 2359 struct drm_encoder *encoder;
abd69c55 2360 struct drm_crtc *crtc;
f453ba04 2361
fb3b06c8
DA		 2362 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2363 return -EINVAL;
2364
a2b34e22 2365 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
fcf93f69
DV		 2366 if (!encoder)
2367 return -ENOENT;
f453ba04 2368
fcf93f69 2369 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
abd69c55
DV		 2370 crtc = drm_encoder_get_crtc(encoder);
2371 if (crtc)
2372 enc_resp->crtc_id = crtc->base.id;
f453ba04
DA		 2373 else
2374 enc_resp->crtc_id = 0;
fcf93f69
DV		 2375 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2376
f453ba04
DA		 2377 enc_resp->encoder_type = encoder->encoder_type;
2378 enc_resp->encoder_id = encoder->base.id;
2379 enc_resp->possible_crtcs = encoder->possible_crtcs;
2380 enc_resp->possible_clones = encoder->possible_clones;
2381
baf698b0 2382 return 0;
f453ba04
DA		 2383}
2384
8cf5c917 2385/**
c8e32cc1 2386 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 2387 * @dev: DRM device
2388 * @data: ioctl data
2389 * @file_priv: DRM file info
2390 *
c8e32cc1
DV		 2391 * Construct a list of plane ids to return to the user.
2392 *
2393 * Called by the user via ioctl.
2394 *
2395 * Returns:
1a498633 2396 * Zero on success, negative errno on failure.
8cf5c917
JB		 2397 */
2398int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 2399 struct drm_file *file_priv)
8cf5c917
JB		 2400{
2401 struct drm_mode_get_plane_res *plane_resp = data;
2402 struct drm_mode_config *config;
2403 struct drm_plane *plane;
2404 uint32_t __user *plane_ptr;
fcf93f69 2405 int copied = 0;
681e7ec7 2406 unsigned num_planes;
8cf5c917
JB		 2407
2408 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2409 return -EINVAL;
2410
8cf5c917
JB		 2411 config = &dev->mode_config;
2412
681e7ec7
MR		 2413 if (file_priv->universal_planes)
2414 num_planes = config->num_total_plane;
2415 else
2416 num_planes = config->num_overlay_plane;
2417
8cf5c917
JB		 2418 /*
2419 * This ioctl is called twice, once to determine how much space is
2420 * needed, and the 2nd time to fill it.
2421 */
681e7ec7
MR		 2422 if (num_planes &&
2423 (plane_resp->count_planes >= num_planes)) {
81f6c7f8 2424 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917 2425
fcf93f69 2426 /* Plane lists are invariant, no locking needed. */
e4f62546 2427 drm_for_each_plane(plane, dev) {
681e7ec7
MR		 2428 /*
2429 * Unless userspace set the 'universal planes'
2430 * capability bit, only advertise overlays.
2431 */
2432 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2433 !file_priv->universal_planes)
e27dde3e
MR		 2434 continue;
2435
fcf93f69
DV		 2436 if (put_user(plane->base.id, plane_ptr + copied))
2437 return -EFAULT;
8cf5c917
JB		 2438 copied++;
2439 }
2440 }
681e7ec7 2441 plane_resp->count_planes = num_planes;
8cf5c917 2442
fcf93f69 2443 return 0;
8cf5c917
JB		 2444}
2445
2446/**
c8e32cc1 2447 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 2448 * @dev: DRM device
2449 * @data: ioctl data
2450 * @file_priv: DRM file info
2451 *
c8e32cc1
DV		 2452 * Construct a plane configuration structure to return to the user.
2453 *
2454 * Called by the user via ioctl.
2455 *
2456 * Returns:
1a498633 2457 * Zero on success, negative errno on failure.
8cf5c917
JB		 2458 */
2459int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 2460 struct drm_file *file_priv)
8cf5c917
JB		 2461{
2462 struct drm_mode_get_plane *plane_resp = data;
8cf5c917
JB		 2463 struct drm_plane *plane;
2464 uint32_t __user *format_ptr;
8cf5c917
JB		 2465
2466 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2467 return -EINVAL;
2468
a2b34e22 2469 plane = drm_plane_find(dev, plane_resp->plane_id);
fcf93f69
DV		 2470 if (!plane)
2471 return -ENOENT;
8cf5c917 2472
fcf93f69 2473 drm_modeset_lock(&plane->mutex, NULL);
8cf5c917
JB		 2474 if (plane->crtc)
2475 plane_resp->crtc_id = plane->crtc->base.id;
2476 else
2477 plane_resp->crtc_id = 0;
2478
2479 if (plane->fb)
2480 plane_resp->fb_id = plane->fb->base.id;
2481 else
2482 plane_resp->fb_id = 0;
fcf93f69 2483 drm_modeset_unlock(&plane->mutex);
8cf5c917
JB		 2484
2485 plane_resp->plane_id = plane->base.id;
2486 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 2487 plane_resp->gamma_size = 0;
8cf5c917
JB		 2488
2489 /*
2490 * This ioctl is called twice, once to determine how much space is
2491 * needed, and the 2nd time to fill it.
2492 */
2493 if (plane->format_count &&
2494 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 2495 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 2496 if (copy_to_user(format_ptr,
2497 plane->format_types,
2498 sizeof(uint32_t) * plane->format_count)) {
fcf93f69 2499 return -EFAULT;
8cf5c917
JB		 2500 }
2501 }
2502 plane_resp->count_format_types = plane->format_count;
2503
baf698b0 2504 return 0;
8cf5c917
JB		 2505}
2506
ead8610d
LP		 2507/**
2508 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2509 * @plane: plane to check for format support
2510 * @format: the pixel format
2511 *
2512 * Returns:
2513 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2514 * otherwise.
2515 */
2516int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2517{
2518 unsigned int i;
2519
2520 for (i = 0; i < plane->format_count; i++) {
2521 if (format == plane->format_types[i])
2522 return 0;
2523 }
2524
2525 return -EINVAL;
2526}
2527
ce8d9ecc
VS		 2528static int check_src_coords(uint32_t src_x, uint32_t src_y,
2529 uint32_t src_w, uint32_t src_h,
2530 const struct drm_framebuffer *fb)
2531{
2532 unsigned int fb_width, fb_height;
2533
2534 fb_width = fb->width << 16;
2535 fb_height = fb->height << 16;
2536
2537 /* Make sure source coordinates are inside the fb. */
2538 if (src_w > fb_width ||
2539 src_x > fb_width - src_w ||
2540 src_h > fb_height ||
2541 src_y > fb_height - src_h) {
2542 DRM_DEBUG_KMS("Invalid source coordinates "
2543 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2544 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2545 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2546 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2547 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2548 return -ENOSPC;
2549 }
2550
2551 return 0;
2552}
2553
b36552b3
MR		 2554/*
2555 * setplane_internal - setplane handler for internal callers
8cf5c917 2556 *
b36552b3
MR		 2557 * Note that we assume an extra reference has already been taken on fb. If the
2558 * update fails, this reference will be dropped before return; if it succeeds,
2559 * the previous framebuffer (if any) will be unreferenced instead.
c8e32cc1 2560 *
b36552b3 2561 * src_{x,y,w,h} are provided in 16.16 fixed point format
8cf5c917 2562 */
f2b50c11
DV		 2563static int __setplane_internal(struct drm_plane *plane,
2564 struct drm_crtc *crtc,
2565 struct drm_framebuffer *fb,
2566 int32_t crtc_x, int32_t crtc_y,
2567 uint32_t crtc_w, uint32_t crtc_h,
2568 /* src_{x,y,w,h} values are 16.16 fixed point */
2569 uint32_t src_x, uint32_t src_y,
2570 uint32_t src_w, uint32_t src_h)
8cf5c917 2571{
8cf5c917
JB		 2572 int ret = 0;
2573
8cf5c917 2574 /* No fb means shut it down */
b36552b3 2575 if (!fb) {
3d30a59b 2576 plane->old_fb = plane->fb;
731cce48
DV		 2577 ret = plane->funcs->disable_plane(plane);
2578 if (!ret) {
2579 plane->crtc = NULL;
2580 plane->fb = NULL;
2581 } else {
3d30a59b 2582 plane->old_fb = NULL;
731cce48 2583 }
8cf5c917
JB		 2584 goto out;
2585 }
2586
7f994f3f
MR		 2587 /* Check whether this plane is usable on this CRTC */
2588 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2589 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2590 ret = -EINVAL;
2591 goto out;
2592 }
2593
62443be6 2594 /* Check whether this plane supports the fb pixel format. */
ead8610d
LP		 2595 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2596 if (ret) {
6ba6d03e
VS		 2597 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2598 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2599 goto out;
2600 }
2601
3968be94
MR		 2602 /* Give drivers some help against integer overflows */
2603 if (crtc_w > INT_MAX ||
2604 crtc_x > INT_MAX - (int32_t) crtc_w ||
2605 crtc_h > INT_MAX ||
2606 crtc_y > INT_MAX - (int32_t) crtc_h) {
2607 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2608 crtc_w, crtc_h, crtc_x, crtc_y);
c390eed0
VS		 2609 ret = -ERANGE;
2610 goto out;
3968be94
MR		 2611 }
2612
ce8d9ecc
VS		 2613 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2614 if (ret)
42ef8789 2615 goto out;
42ef8789 2616
3d30a59b 2617 plane->old_fb = plane->fb;
8cf5c917 2618 ret = plane->funcs->update_plane(plane, crtc, fb,
b36552b3
MR		 2619 crtc_x, crtc_y, crtc_w, crtc_h,
2620 src_x, src_y, src_w, src_h);
8cf5c917
JB		 2621 if (!ret) {
2622 plane->crtc = crtc;
2623 plane->fb = fb;
35f8badc 2624 fb = NULL;
0fe27f06 2625 } else {
3d30a59b 2626 plane->old_fb = NULL;
8cf5c917
JB		 2627 }
2628
2629out:
6c2a7532
DV		 2630 if (fb)
2631 drm_framebuffer_unreference(fb);
3d30a59b
DV		 2632 if (plane->old_fb)
2633 drm_framebuffer_unreference(plane->old_fb);
2634 plane->old_fb = NULL;
8cf5c917
JB		 2635
2636 return ret;
f2b50c11 2637}
b36552b3 2638
f2b50c11
DV		 2639static int setplane_internal(struct drm_plane *plane,
2640 struct drm_crtc *crtc,
2641 struct drm_framebuffer *fb,
2642 int32_t crtc_x, int32_t crtc_y,
2643 uint32_t crtc_w, uint32_t crtc_h,
2644 /* src_{x,y,w,h} values are 16.16 fixed point */
2645 uint32_t src_x, uint32_t src_y,
2646 uint32_t src_w, uint32_t src_h)
2647{
2648 int ret;
2649
2650 drm_modeset_lock_all(plane->dev);
2651 ret = __setplane_internal(plane, crtc, fb,
2652 crtc_x, crtc_y, crtc_w, crtc_h,
2653 src_x, src_y, src_w, src_h);
2654 drm_modeset_unlock_all(plane->dev);
2655
2656 return ret;
b36552b3
MR		 2657}
2658
2659/**
2660 * drm_mode_setplane - configure a plane's configuration
2661 * @dev: DRM device
2662 * @data: ioctl data*
2663 * @file_priv: DRM file info
2664 *
2665 * Set plane configuration, including placement, fb, scaling, and other factors.
2666 * Or pass a NULL fb to disable (planes may be disabled without providing a
2667 * valid crtc).
2668 *
2669 * Returns:
1a498633 2670 * Zero on success, negative errno on failure.
b36552b3
MR		 2671 */
2672int drm_mode_setplane(struct drm_device *dev, void *data,
2673 struct drm_file *file_priv)
2674{
2675 struct drm_mode_set_plane *plane_req = data;
b36552b3
MR		 2676 struct drm_plane *plane;
2677 struct drm_crtc *crtc = NULL;
2678 struct drm_framebuffer *fb = NULL;
2679
2680 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2681 return -EINVAL;
2682
b36552b3
MR		 2683 /*
2684 * First, find the plane, crtc, and fb objects. If not available,
2685 * we don't bother to call the driver.
2686 */
933f622f
RC		 2687 plane = drm_plane_find(dev, plane_req->plane_id);
2688 if (!plane) {
b36552b3
MR		 2689 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2690 plane_req->plane_id);
2691 return -ENOENT;
2692 }
b36552b3
MR		 2693
2694 if (plane_req->fb_id) {
2695 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2696 if (!fb) {
2697 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2698 plane_req->fb_id);
2699 return -ENOENT;
2700 }
2701
933f622f
RC		 2702 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2703 if (!crtc) {
b36552b3
MR		 2704 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2705 plane_req->crtc_id);
2706 return -ENOENT;
2707 }
b36552b3
MR		 2708 }
2709
161d0dc1
MR		 2710 /*
2711 * setplane_internal will take care of deref'ing either the old or new
2712 * framebuffer depending on success.
2713 */
17cfd91f 2714 return setplane_internal(plane, crtc, fb,
b36552b3
MR		 2715 plane_req->crtc_x, plane_req->crtc_y,
2716 plane_req->crtc_w, plane_req->crtc_h,
2717 plane_req->src_x, plane_req->src_y,
2718 plane_req->src_w, plane_req->src_h);
8cf5c917
JB		 2719}
2720
2d13b679
DV		 2721/**
2722 * drm_mode_set_config_internal - helper to call ->set_config
2723 * @set: modeset config to set
2724 *
2725 * This is a little helper to wrap internal calls to the ->set_config driver
2726 * interface. The only thing it adds is correct refcounting dance.
4dfd909f 2727 *
c8e32cc1 2728 * Returns:
1a498633 2729 * Zero on success, negative errno on failure.
2d13b679
DV		 2730 */
2731int drm_mode_set_config_internal(struct drm_mode_set *set)
2732{
2733 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2734 struct drm_framebuffer *fb;
2735 struct drm_crtc *tmp;
b0d12325
DV		 2736 int ret;
2737
5cef29aa
DV		 2738 /*
2739 * NOTE: ->set_config can also disable other crtcs (if we steal all
2740 * connectors from it), hence we need to refcount the fbs across all
2741 * crtcs. Atomic modeset will have saner semantics ...
2742 */
e4f62546 2743 drm_for_each_crtc(tmp, crtc->dev)
3d30a59b 2744 tmp->primary->old_fb = tmp->primary->fb;
5cef29aa 2745
b0d12325 2746 fb = set->fb;
2d13b679 2747
b0d12325
DV		 2748 ret = crtc->funcs->set_config(set);
2749 if (ret == 0) {
e13161af 2750 crtc->primary->crtc = crtc;
0fe27f06 2751 crtc->primary->fb = fb;
5cef29aa 2752 }
cc85e121 2753
e4f62546 2754 drm_for_each_crtc(tmp, crtc->dev) {
f4510a27
MR		 2755 if (tmp->primary->fb)
2756 drm_framebuffer_reference(tmp->primary->fb);
3d30a59b
DV		 2757 if (tmp->primary->old_fb)
2758 drm_framebuffer_unreference(tmp->primary->old_fb);
2759 tmp->primary->old_fb = NULL;
b0d12325
DV		 2760 }
2761
2762 return ret;
2d13b679
DV		 2763}
2764EXPORT_SYMBOL(drm_mode_set_config_internal);
2765
ecb7e16b
GP		 2766/**
2767 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2768 * @mode: mode to query
2769 * @hdisplay: hdisplay value to fill in
2770 * @vdisplay: vdisplay value to fill in
2771 *
2772 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2773 * the appropriate layout.
2774 */
2775void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2776 int *hdisplay, int *vdisplay)
2777{
2778 struct drm_display_mode adjusted;
2779
2780 drm_mode_copy(&adjusted, mode);
2781 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2782 *hdisplay = adjusted.crtc_hdisplay;
2783 *vdisplay = adjusted.crtc_vdisplay;
2784}
2785EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2786
af93629d
MR		 2787/**
2788 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2789 * CRTC viewport
2790 * @crtc: CRTC that framebuffer will be displayed on
2791 * @x: x panning
2792 * @y: y panning
2793 * @mode: mode that framebuffer will be displayed under
2794 * @fb: framebuffer to check size of
c11e9283 2795 */
af93629d
MR		 2796int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2797 int x, int y,
2798 const struct drm_display_mode *mode,
2799 const struct drm_framebuffer *fb)
c11e9283
DL		 2800
2801{
2802 int hdisplay, vdisplay;
2803
ecb7e16b 2804 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
a0c1bbb0 2805
33e0be63
VS		 2806 if (crtc->state &&
2807 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2808 BIT(DRM_ROTATE_270)))
c11e9283
DL		 2809 swap(hdisplay, vdisplay);
2810
ce8d9ecc
VS		 2811 return check_src_coords(x << 16, y << 16,
2812 hdisplay << 16, vdisplay << 16, fb);
c11e9283 2813}
af93629d 2814EXPORT_SYMBOL(drm_crtc_check_viewport);
c11e9283 2815
f453ba04
DA		 2816/**
2817 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2818 * @dev: drm device for the ioctl
2819 * @data: data pointer for the ioctl
2820 * @file_priv: drm file for the ioctl call
f453ba04 2821 *
f453ba04
DA		 2822 * Build a new CRTC configuration based on user request.
2823 *
2824 * Called by the user via ioctl.
2825 *
c8e32cc1 2826 * Returns:
1a498633 2827 * Zero on success, negative errno on failure.
f453ba04
DA		 2828 */
2829int drm_mode_setcrtc(struct drm_device *dev, void *data,
2830 struct drm_file *file_priv)
2831{
2832 struct drm_mode_config *config = &dev->mode_config;
2833 struct drm_mode_crtc *crtc_req = data;
6653cc8d 2834 struct drm_crtc *crtc;
f453ba04
DA		 2835 struct drm_connector **connector_set = NULL, *connector;
2836 struct drm_framebuffer *fb = NULL;
2837 struct drm_display_mode *mode = NULL;
2838 struct drm_mode_set set;
2839 uint32_t __user *set_connectors_ptr;
4a1b0714 2840 int ret;
f453ba04
DA		 2841 int i;
2842
fb3b06c8
DA		 2843 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2844 return -EINVAL;
2845
01447e9f
ZJ		 2846 /*
2847 * Universal plane src offsets are only 16.16, prevent havoc for
2848 * drivers using universal plane code internally.
2849 */
2850 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
1d97e915
VS		 2851 return -ERANGE;
2852
84849903 2853 drm_modeset_lock_all(dev);
a2b34e22
RC		 2854 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2855 if (!crtc) {
58367ed6 2856 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2857 ret = -ENOENT;
f453ba04
DA		 2858 goto out;
2859 }
fa3ab4c2 2860 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
f453ba04
DA		 2861
2862 if (crtc_req->mode_valid) {
2863 /* If we have a mode we need a framebuffer. */
2864 /* If we pass -1, set the mode with the currently bound fb */
2865 if (crtc_req->fb_id == -1) {
f4510a27 2866 if (!crtc->primary->fb) {
6653cc8d
VS		 2867 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2868 ret = -EINVAL;
2869 goto out;
f453ba04 2870 }
f4510a27 2871 fb = crtc->primary->fb;
b0d12325
DV		 2872 /* Make refcounting symmetric with the lookup path. */
2873 drm_framebuffer_reference(fb);
f453ba04 2874 } else {
786b99ed
DV		 2875 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2876 if (!fb) {
58367ed6
ZY		 2877 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2878 crtc_req->fb_id);
37c4e705 2879 ret = -ENOENT;
f453ba04
DA		 2880 goto out;
2881 }
f453ba04
DA		 2882 }
2883
2884 mode = drm_mode_create(dev);
ee34ab5b
VS		 2885 if (!mode) {
2886 ret = -ENOMEM;
2887 goto out;
2888 }
2889
934a8a89 2890 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
90367bf6
VS		 2891 if (ret) {
2892 DRM_DEBUG_KMS("Invalid mode\n");
2893 goto out;
2894 }
2895
7eb5f302
LP		 2896 /*
2897 * Check whether the primary plane supports the fb pixel format.
2898 * Drivers not implementing the universal planes API use a
2899 * default formats list provided by the DRM core which doesn't
2900 * match real hardware capabilities. Skip the check in that
2901 * case.
2902 */
2903 if (!crtc->primary->format_default) {
2904 ret = drm_plane_check_pixel_format(crtc->primary,
2905 fb->pixel_format);
2906 if (ret) {
2907 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2908 drm_get_format_name(fb->pixel_format));
2909 goto out;
2910 }
2911 }
2912
c11e9283
DL		 2913 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2914 mode, fb);
2915 if (ret)
5f61bb42 2916 goto out;
c11e9283 2917
f453ba04
DA		 2918 }
2919
2920 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2921 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2922 ret = -EINVAL;
2923 goto out;
2924 }
2925
7781de74 2926 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2927 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2928 crtc_req->count_connectors);
2929 ret = -EINVAL;
2930 goto out;
2931 }
2932
2933 if (crtc_req->count_connectors > 0) {
2934 u32 out_id;
2935
2936 /* Avoid unbounded kernel memory allocation */
2937 if (crtc_req->count_connectors > config->num_connector) {
2938 ret = -EINVAL;
2939 goto out;
2940 }
2941
2f6c5389
TR		 2942 connector_set = kmalloc_array(crtc_req->count_connectors,
2943 sizeof(struct drm_connector *),
2944 GFP_KERNEL);
f453ba04
DA		 2945 if (!connector_set) {
2946 ret = -ENOMEM;
2947 goto out;
2948 }
2949
2950 for (i = 0; i < crtc_req->count_connectors; i++) {
b164d31f 2951 connector_set[i] = NULL;
81f6c7f8 2952 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2953 if (get_user(out_id, &set_connectors_ptr[i])) {
2954 ret = -EFAULT;
2955 goto out;
2956 }
2957
b164d31f 2958 connector = drm_connector_lookup(dev, out_id);
a2b34e22 2959 if (!connector) {
58367ed6
ZY		 2960 DRM_DEBUG_KMS("Connector id %d unknown\n",
2961 out_id);
f27657f2 2962 ret = -ENOENT;
f453ba04
DA		 2963 goto out;
2964 }
9440106b
JG		 2965 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2966 connector->base.id,
25933820 2967 connector->name);
f453ba04
DA		 2968
2969 connector_set[i] = connector;
2970 }
2971 }
2972
2973 set.crtc = crtc;
2974 set.x = crtc_req->x;
2975 set.y = crtc_req->y;
2976 set.mode = mode;
2977 set.connectors = connector_set;
2978 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2979 set.fb = fb;
2d13b679 2980 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2981
2982out:
b0d12325
DV		 2983 if (fb)
2984 drm_framebuffer_unreference(fb);
2985
b164d31f
DA		 2986 if (connector_set) {
2987 for (i = 0; i < crtc_req->count_connectors; i++) {
2988 if (connector_set[i])
2989 drm_connector_unreference(connector_set[i]);
2990 }
2991 }
f453ba04 2992 kfree(connector_set);
ee34ab5b 2993 drm_mode_destroy(dev, mode);
84849903 2994 drm_modeset_unlock_all(dev);
f453ba04
DA		 2995 return ret;
2996}
2997
161d0dc1
MR		 2998/**
2999 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
3000 * universal plane handler call
3001 * @crtc: crtc to update cursor for
3002 * @req: data pointer for the ioctl
3003 * @file_priv: drm file for the ioctl call
3004 *
3005 * Legacy cursor ioctl's work directly with driver buffer handles. To
3006 * translate legacy ioctl calls into universal plane handler calls, we need to
3007 * wrap the native buffer handle in a drm_framebuffer.
3008 *
3009 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
3010 * buffer with a pitch of 4*width; the universal plane interface should be used
3011 * directly in cases where the hardware can support other buffer settings and
3012 * userspace wants to make use of these capabilities.
3013 *
3014 * Returns:
1a498633 3015 * Zero on success, negative errno on failure.
161d0dc1
MR		 3016 */
3017static int drm_mode_cursor_universal(struct drm_crtc *crtc,
3018 struct drm_mode_cursor2 *req,
3019 struct drm_file *file_priv)
3020{
3021 struct drm_device *dev = crtc->dev;
3022 struct drm_framebuffer *fb = NULL;
3023 struct drm_mode_fb_cmd2 fbreq = {
3024 .width = req->width,
3025 .height = req->height,
3026 .pixel_format = DRM_FORMAT_ARGB8888,
3027 .pitches = { req->width * 4 },
3028 .handles = { req->handle },
3029 };
3030 int32_t crtc_x, crtc_y;
3031 uint32_t crtc_w = 0, crtc_h = 0;
3032 uint32_t src_w = 0, src_h = 0;
3033 int ret = 0;
3034
3035 BUG_ON(!crtc->cursor);
f2b50c11 3036 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
161d0dc1
MR		 3037
3038 /*
3039 * Obtain fb we'll be using (either new or existing) and take an extra
3040 * reference to it if fb != null. setplane will take care of dropping
3041 * the reference if the plane update fails.
3042 */
3043 if (req->flags & DRM_MODE_CURSOR_BO) {
3044 if (req->handle) {
9a6f5130 3045 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
161d0dc1
MR		 3046 if (IS_ERR(fb)) {
3047 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
3048 return PTR_ERR(fb);
3049 }
dd546591
GH		 3050 fb->hot_x = req->hot_x;
3051 fb->hot_y = req->hot_y;
161d0dc1
MR		 3052 } else {
3053 fb = NULL;
3054 }
3055 } else {
161d0dc1
MR		 3056 fb = crtc->cursor->fb;
3057 if (fb)
3058 drm_framebuffer_reference(fb);
161d0dc1
MR		 3059 }
3060
3061 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3062 crtc_x = req->x;
3063 crtc_y = req->y;
3064 } else {
3065 crtc_x = crtc->cursor_x;
3066 crtc_y = crtc->cursor_y;
3067 }
3068
3069 if (fb) {
3070 crtc_w = fb->width;
3071 crtc_h = fb->height;
3072 src_w = fb->width << 16;
3073 src_h = fb->height << 16;
3074 }
3075
3076 /*
3077 * setplane_internal will take care of deref'ing either the old or new
3078 * framebuffer depending on success.
3079 */
f2b50c11 3080 ret = __setplane_internal(crtc->cursor, crtc, fb,
161d0dc1
MR		 3081 crtc_x, crtc_y, crtc_w, crtc_h,
3082 0, 0, src_w, src_h);
3083
3084 /* Update successful; save new cursor position, if necessary */
3085 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
3086 crtc->cursor_x = req->x;
3087 crtc->cursor_y = req->y;
3088 }
3089
3090 return ret;
3091}
3092
4c813d4d
DA		 3093static int drm_mode_cursor_common(struct drm_device *dev,
3094 struct drm_mode_cursor2 *req,
3095 struct drm_file *file_priv)
f453ba04 3096{
f453ba04
DA		 3097 struct drm_crtc *crtc;
3098 int ret = 0;
3099
fb3b06c8
DA		 3100 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3101 return -EINVAL;
3102
7c4eaca4 3103 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 3104 return -EINVAL;
f453ba04 3105
a2b34e22
RC		 3106 crtc = drm_crtc_find(dev, req->crtc_id);
3107 if (!crtc) {
58367ed6 3108 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 3109 return -ENOENT;
f453ba04 3110 }
f453ba04 3111
161d0dc1
MR		 3112 /*
3113 * If this crtc has a universal cursor plane, call that plane's update
3114 * handler rather than using legacy cursor handlers.
3115 */
4d02e2de 3116 drm_modeset_lock_crtc(crtc, crtc->cursor);
f2b50c11
DV		 3117 if (crtc->cursor) {
3118 ret = drm_mode_cursor_universal(crtc, req, file_priv);
3119 goto out;
3120 }
3121
f453ba04 3122 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 3123 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 3124 ret = -ENXIO;
3125 goto out;
3126 }
3127 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 3128 if (crtc->funcs->cursor_set2)
3129 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
3130 req->width, req->height, req->hot_x, req->hot_y);
3131 else
3132 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
3133 req->width, req->height);
f453ba04
DA		 3134 }
3135
3136 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3137 if (crtc->funcs->cursor_move) {
3138 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3139 } else {
f453ba04
DA		 3140 ret = -EFAULT;
3141 goto out;
3142 }
3143 }
3144out:
d059f652 3145 drm_modeset_unlock_crtc(crtc);
dac35663 3146
f453ba04 3147 return ret;
4c813d4d
DA		 3148
3149}
c8e32cc1
DV		 3150
3151
3152/**
3153 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3154 * @dev: drm device for the ioctl
3155 * @data: data pointer for the ioctl
3156 * @file_priv: drm file for the ioctl call
3157 *
3158 * Set the cursor configuration based on user request.
3159 *
3160 * Called by the user via ioctl.
3161 *
3162 * Returns:
1a498633 3163 * Zero on success, negative errno on failure.
c8e32cc1 3164 */
4c813d4d 3165int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 3166 void *data, struct drm_file *file_priv)
4c813d4d
DA		 3167{
3168 struct drm_mode_cursor *req = data;
3169 struct drm_mode_cursor2 new_req;
3170
3171 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3172 new_req.hot_x = new_req.hot_y = 0;
3173
3174 return drm_mode_cursor_common(dev, &new_req, file_priv);
3175}
3176
c8e32cc1
DV		 3177/**
3178 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3179 * @dev: drm device for the ioctl
3180 * @data: data pointer for the ioctl
3181 * @file_priv: drm file for the ioctl call
3182 *
3183 * Set the cursor configuration based on user request. This implements the 2nd
3184 * version of the cursor ioctl, which allows userspace to additionally specify
3185 * the hotspot of the pointer.
3186 *
3187 * Called by the user via ioctl.
3188 *
3189 * Returns:
1a498633 3190 * Zero on success, negative errno on failure.
c8e32cc1 3191 */
4c813d4d
DA		 3192int drm_mode_cursor2_ioctl(struct drm_device *dev,
3193 void *data, struct drm_file *file_priv)
3194{
3195 struct drm_mode_cursor2 *req = data;
4dfd909f 3196
4c813d4d 3197 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 3198}
3199
c8e32cc1
DV		 3200/**
3201 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3202 * @bpp: bits per pixels
3203 * @depth: bit depth per pixel
3204 *
3205 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3206 * Useful in fbdev emulation code, since that deals in those values.
3207 */
308e5bcb
JB		 3208uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3209{
3210 uint32_t fmt;
3211
3212 switch (bpp) {
3213 case 8:
d84f031b 3214 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 3215 break;
3216 case 16:
3217 if (depth == 15)
04b3924d 3218 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 3219 else
04b3924d 3220 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 3221 break;
3222 case 24:
04b3924d 3223 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 3224 break;
3225 case 32:
3226 if (depth == 24)
04b3924d 3227 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 3228 else if (depth == 30)
04b3924d 3229 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 3230 else
04b3924d 3231 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 3232 break;
3233 default:
04b3924d
VS		 3234 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3235 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 3236 break;
3237 }
3238
3239 return fmt;
3240}
3241EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3242
f453ba04
DA		 3243/**
3244 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 3245 * @dev: drm device for the ioctl
3246 * @data: data pointer for the ioctl
3247 * @file_priv: drm file for the ioctl call
f453ba04 3248 *
c8e32cc1 3249 * Add a new FB to the specified CRTC, given a user request. This is the
209f5527 3250 * original addfb ioctl which only supported RGB formats.
f453ba04
DA		 3251 *
3252 * Called by the user via ioctl.
3253 *
c8e32cc1 3254 * Returns:
1a498633 3255 * Zero on success, negative errno on failure.
f453ba04
DA		 3256 */
3257int drm_mode_addfb(struct drm_device *dev,
3258 void *data, struct drm_file *file_priv)
3259{
308e5bcb
JB		 3260 struct drm_mode_fb_cmd *or = data;
3261 struct drm_mode_fb_cmd2 r = {};
228f2cb3 3262 int ret;
308e5bcb 3263
228f2cb3 3264 /* convert to new format and call new ioctl */
308e5bcb
JB		 3265 r.fb_id = or->fb_id;
3266 r.width = or->width;
3267 r.height = or->height;
3268 r.pitches[0] = or->pitch;
3269 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3270 r.handles[0] = or->handle;
3271
228f2cb3
CE		 3272 ret = drm_mode_addfb2(dev, &r, file_priv);
3273 if (ret)
3274 return ret;
308e5bcb 3275
228f2cb3 3276 or->fb_id = r.fb_id;
4b096ac1 3277
baf698b0 3278 return 0;
308e5bcb
JB		 3279}
3280
cff91b62 3281static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 3282{
3283 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3284
3285 switch (format) {
3286 case DRM_FORMAT_C8:
3287 case DRM_FORMAT_RGB332:
3288 case DRM_FORMAT_BGR233:
3289 case DRM_FORMAT_XRGB4444:
3290 case DRM_FORMAT_XBGR4444:
3291 case DRM_FORMAT_RGBX4444:
3292 case DRM_FORMAT_BGRX4444:
3293 case DRM_FORMAT_ARGB4444:
3294 case DRM_FORMAT_ABGR4444:
3295 case DRM_FORMAT_RGBA4444:
3296 case DRM_FORMAT_BGRA4444:
3297 case DRM_FORMAT_XRGB1555:
3298 case DRM_FORMAT_XBGR1555:
3299 case DRM_FORMAT_RGBX5551:
3300 case DRM_FORMAT_BGRX5551:
3301 case DRM_FORMAT_ARGB1555:
3302 case DRM_FORMAT_ABGR1555:
3303 case DRM_FORMAT_RGBA5551:
3304 case DRM_FORMAT_BGRA5551:
3305 case DRM_FORMAT_RGB565:
3306 case DRM_FORMAT_BGR565:
3307 case DRM_FORMAT_RGB888:
3308 case DRM_FORMAT_BGR888:
3309 case DRM_FORMAT_XRGB8888:
3310 case DRM_FORMAT_XBGR8888:
3311 case DRM_FORMAT_RGBX8888:
3312 case DRM_FORMAT_BGRX8888:
3313 case DRM_FORMAT_ARGB8888:
3314 case DRM_FORMAT_ABGR8888:
3315 case DRM_FORMAT_RGBA8888:
3316 case DRM_FORMAT_BGRA8888:
3317 case DRM_FORMAT_XRGB2101010:
3318 case DRM_FORMAT_XBGR2101010:
3319 case DRM_FORMAT_RGBX1010102:
3320 case DRM_FORMAT_BGRX1010102:
3321 case DRM_FORMAT_ARGB2101010:
3322 case DRM_FORMAT_ABGR2101010:
3323 case DRM_FORMAT_RGBA1010102:
3324 case DRM_FORMAT_BGRA1010102:
3325 case DRM_FORMAT_YUYV:
3326 case DRM_FORMAT_YVYU:
3327 case DRM_FORMAT_UYVY:
3328 case DRM_FORMAT_VYUY:
3329 case DRM_FORMAT_AYUV:
3330 case DRM_FORMAT_NV12:
3331 case DRM_FORMAT_NV21:
3332 case DRM_FORMAT_NV16:
3333 case DRM_FORMAT_NV61:
ba623f6a
LP		 3334 case DRM_FORMAT_NV24:
3335 case DRM_FORMAT_NV42:
935b5977
VS		 3336 case DRM_FORMAT_YUV410:
3337 case DRM_FORMAT_YVU410:
3338 case DRM_FORMAT_YUV411:
3339 case DRM_FORMAT_YVU411:
3340 case DRM_FORMAT_YUV420:
3341 case DRM_FORMAT_YVU420:
3342 case DRM_FORMAT_YUV422:
3343 case DRM_FORMAT_YVU422:
3344 case DRM_FORMAT_YUV444:
3345 case DRM_FORMAT_YVU444:
3346 return 0;
3347 default:
23c453a4
VS		 3348 DRM_DEBUG_KMS("invalid pixel format %s\n",
3349 drm_get_format_name(r->pixel_format));
935b5977
VS		 3350 return -EINVAL;
3351 }
3352}
3353
cff91b62 3354static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 3355{
3356 int ret, hsub, vsub, num_planes, i;
3357
3358 ret = format_check(r);
3359 if (ret) {
6ba6d03e
VS		 3360 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3361 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 3362 return ret;
3363 }
3364
3365 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3366 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3367 num_planes = drm_format_num_planes(r->pixel_format);
3368
3369 if (r->width == 0 || r->width % hsub) {
209f5527 3370 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
d1b45d5f
VS		 3371 return -EINVAL;
3372 }
3373
3374 if (r->height == 0 || r->height % vsub) {
1aa1b11c 3375 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 3376 return -EINVAL;
3377 }
3378
3379 for (i = 0; i < num_planes; i++) {
3380 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 3381 unsigned int height = r->height / (i != 0 ? vsub : 1);
3382 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 3383
3384 if (!r->handles[i]) {
1aa1b11c 3385 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 3386 return -EINVAL;
3387 }
3388
b180b5d1
VS		 3389 if ((uint64_t) width * cpp > UINT_MAX)
3390 return -ERANGE;
3391
3392 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3393 return -ERANGE;
3394
3395 if (r->pitches[i] < width * cpp) {
1aa1b11c 3396 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 3397 return -EINVAL;
3398 }
e3eb3250
RC		 3399
3400 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3401 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3402 r->modifier[i], i);
3403 return -EINVAL;
3404 }
570655b0
RC		 3405
3406 /* modifier specific checks: */
3407 switch (r->modifier[i]) {
3408 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3409 /* NOTE: the pitch restriction may be lifted later if it turns
3410 * out that no hw has this restriction:
3411 */
3412 if (r->pixel_format != DRM_FORMAT_NV12 ||
3413 width % 128 || height % 32 ||
3414 r->pitches[i] % 128) {
3415 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3416 return -EINVAL;
3417 }
3418 break;
3419
3420 default:
3421 break;
3422 }
d1b45d5f
VS		 3423 }
3424
bbe16a40
DV		 3425 for (i = num_planes; i < 4; i++) {
3426 if (r->modifier[i]) {
3427 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3428 return -EINVAL;
3429 }
3430
3431 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3432 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3433 continue;
3434
3435 if (r->handles[i]) {
3436 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3437 return -EINVAL;
3438 }
3439
3440 if (r->pitches[i]) {
3441 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3442 return -EINVAL;
3443 }
3444
3445 if (r->offsets[i]) {
3446 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3447 return -EINVAL;
3448 }
3449 }
3450
d1b45d5f
VS		 3451 return 0;
3452}
3453
9a6f5130
CW		 3454static struct drm_framebuffer *
3455internal_framebuffer_create(struct drm_device *dev,
1eb83451 3456 const struct drm_mode_fb_cmd2 *r,
9a6f5130 3457 struct drm_file *file_priv)
308e5bcb 3458{
f453ba04
DA		 3459 struct drm_mode_config *config = &dev->mode_config;
3460 struct drm_framebuffer *fb;
4a1b0714 3461 int ret;
f453ba04 3462
e3eb3250 3463 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
e3cc3520 3464 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
c394c2b0 3465 return ERR_PTR(-EINVAL);
e3cc3520
VS		 3466 }
3467
f453ba04 3468 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 3469 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 3470 r->width, config->min_width, config->max_width);
c394c2b0 3471 return ERR_PTR(-EINVAL);
f453ba04
DA		 3472 }
3473 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 3474 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 3475 r->height, config->min_height, config->max_height);
c394c2b0 3476 return ERR_PTR(-EINVAL);
f453ba04
DA		 3477 }
3478
e3eb3250
RC		 3479 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3480 !dev->mode_config.allow_fb_modifiers) {
3481 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3482 return ERR_PTR(-EINVAL);
3483 }
3484
d1b45d5f
VS		 3485 ret = framebuffer_check(r);
3486 if (ret)
c394c2b0 3487 return ERR_PTR(ret);
935b5977 3488
f453ba04 3489 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 3490 if (IS_ERR(fb)) {
1aa1b11c 3491 DRM_DEBUG_KMS("could not create framebuffer\n");
c394c2b0 3492 return fb;
f453ba04
DA		 3493 }
3494
c394c2b0
MR		 3495 return fb;
3496}
4b096ac1 3497
c394c2b0
MR		 3498/**
3499 * drm_mode_addfb2 - add an FB to the graphics configuration
3500 * @dev: drm device for the ioctl
3501 * @data: data pointer for the ioctl
3502 * @file_priv: drm file for the ioctl call
3503 *
3504 * Add a new FB to the specified CRTC, given a user request with format. This is
3505 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3506 * and uses fourcc codes as pixel format specifiers.
3507 *
3508 * Called by the user via ioctl.
3509 *
3510 * Returns:
1a498633 3511 * Zero on success, negative errno on failure.
c394c2b0
MR		 3512 */
3513int drm_mode_addfb2(struct drm_device *dev,
3514 void *data, struct drm_file *file_priv)
3515{
9a6f5130 3516 struct drm_mode_fb_cmd2 *r = data;
c394c2b0
MR		 3517 struct drm_framebuffer *fb;
3518
3519 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3520 return -EINVAL;
3521
9a6f5130 3522 fb = internal_framebuffer_create(dev, r, file_priv);
c394c2b0
MR		 3523 if (IS_ERR(fb))
3524 return PTR_ERR(fb);
3525
9a6f5130 3526 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
9a6f5130 3527 r->fb_id = fb->base.id;
c7e1c59a
DA		 3528
3529 /* Transfer ownership to the filp for reaping on close */
3530 mutex_lock(&file_priv->fbs_lock);
9a6f5130
CW		 3531 list_add(&fb->filp_head, &file_priv->fbs);
3532 mutex_unlock(&file_priv->fbs_lock);
3533
c394c2b0 3534 return 0;
f453ba04
DA		 3535}
3536
f2d580b9
ML		 3537struct drm_mode_rmfb_work {
3538 struct work_struct work;
3539 struct list_head fbs;
3540};
3541
3542static void drm_mode_rmfb_work_fn(struct work_struct *w)
3543{
3544 struct drm_mode_rmfb_work *arg = container_of(w, typeof(*arg), work);
3545
3546 while (!list_empty(&arg->fbs)) {
3547 struct drm_framebuffer *fb =
3548 list_first_entry(&arg->fbs, typeof(*fb), filp_head);
3549
3550 list_del_init(&fb->filp_head);
3551 drm_framebuffer_remove(fb);
3552 }
3553}
3554
f453ba04
DA		 3555/**
3556 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 3557 * @dev: drm device for the ioctl
3558 * @data: data pointer for the ioctl
3559 * @file_priv: drm file for the ioctl call
f453ba04 3560 *
f453ba04
DA		 3561 * Remove the FB specified by the user.
3562 *
3563 * Called by the user via ioctl.
3564 *
c8e32cc1 3565 * Returns:
1a498633 3566 * Zero on success, negative errno on failure.
f453ba04
DA		 3567 */
3568int drm_mode_rmfb(struct drm_device *dev,
3569 void *data, struct drm_file *file_priv)
3570{
f453ba04
DA		 3571 struct drm_framebuffer *fb = NULL;
3572 struct drm_framebuffer *fbl = NULL;
3573 uint32_t *id = data;
f453ba04
DA		 3574 int found = 0;
3575
fb3b06c8
DA		 3576 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3577 return -EINVAL;
3578
72fe90b8
DA		 3579 fb = drm_framebuffer_lookup(dev, *id);
3580 if (!fb)
3581 return -ENOENT;
3582
4b096ac1 3583 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 3584 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3585 if (fb == fbl)
3586 found = 1;
72fe90b8
DA		 3587 if (!found) {
3588 mutex_unlock(&file_priv->fbs_lock);
3589 goto fail_unref;
3590 }
2b677e8c 3591
4b096ac1
DV		 3592 list_del_init(&fb->filp_head);
3593 mutex_unlock(&file_priv->fbs_lock);
f453ba04 3594
72fe90b8
DA		 3595 /* drop the reference we picked up in framebuffer lookup */
3596 drm_framebuffer_unreference(fb);
2b677e8c 3597
f2d580b9
ML		 3598 /*
3599 * we now own the reference that was stored in the fbs list
3600 *
3601 * drm_framebuffer_remove may fail with -EINTR on pending signals,
3602 * so run this in a separate stack as there's no way to correctly
3603 * handle this after the fb is already removed from the lookup table.
3604 */
3605 if (drm_framebuffer_read_refcount(fb) > 1) {
3606 struct drm_mode_rmfb_work arg;
3607
3608 INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
3609 INIT_LIST_HEAD(&arg.fbs);
3610 list_add_tail(&fb->filp_head, &arg.fbs);
3611
3612 schedule_work(&arg.work);
3613 flush_work(&arg.work);
3614 destroy_work_on_stack(&arg.work);
3615 } else
3616 drm_framebuffer_unreference(fb);
3617
72fe90b8 3618 return 0;
2b677e8c 3619
72fe90b8
DA		 3620fail_unref:
3621 drm_framebuffer_unreference(fb);
37c4e705 3622 return -ENOENT;
f453ba04
DA		 3623}
3624
3625/**
3626 * drm_mode_getfb - get FB info
065a50ed
DV		 3627 * @dev: drm device for the ioctl
3628 * @data: data pointer for the ioctl
3629 * @file_priv: drm file for the ioctl call
f453ba04 3630 *
f453ba04
DA		 3631 * Lookup the FB given its ID and return info about it.
3632 *
3633 * Called by the user via ioctl.
3634 *
c8e32cc1 3635 * Returns:
1a498633 3636 * Zero on success, negative errno on failure.
f453ba04
DA		 3637 */
3638int drm_mode_getfb(struct drm_device *dev,
3639 void *data, struct drm_file *file_priv)
3640{
3641 struct drm_mode_fb_cmd *r = data;
f453ba04 3642 struct drm_framebuffer *fb;
58c0dca1 3643 int ret;
f453ba04 3644
fb3b06c8
DA		 3645 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3646 return -EINVAL;
3647
786b99ed 3648 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 3649 if (!fb)
37c4e705 3650 return -ENOENT;
f453ba04
DA		 3651
3652 r->height = fb->height;
3653 r->width = fb->width;
3654 r->depth = fb->depth;
3655 r->bpp = fb->bits_per_pixel;
01f2c773 3656 r->pitch = fb->pitches[0];
101b96f3 3657 if (fb->funcs->create_handle) {
b3ac9f25 3658 if (drm_is_current_master(file_priv) || capable(CAP_SYS_ADMIN) ||
43683057 3659 drm_is_control_client(file_priv)) {
101b96f3
DH		 3660 ret = fb->funcs->create_handle(fb, file_priv,
3661 &r->handle);
3662 } else {
3663 /* GET_FB() is an unprivileged ioctl so we must not
3664 * return a buffer-handle to non-master processes! For
3665 * backwards-compatibility reasons, we cannot make
3666 * GET_FB() privileged, so just return an invalid handle
3667 * for non-masters. */
3668 r->handle = 0;
3669 ret = 0;
3670 }
3671 } else {
af26ef3b 3672 ret = -ENODEV;
101b96f3 3673 }
f453ba04 3674
58c0dca1
DV		 3675 drm_framebuffer_unreference(fb);
3676
f453ba04
DA		 3677 return ret;
3678}
3679
c8e32cc1
DV		 3680/**
3681 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3682 * @dev: drm device for the ioctl
3683 * @data: data pointer for the ioctl
3684 * @file_priv: drm file for the ioctl call
3685 *
3686 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3687 * rectangle list. Generic userspace which does frontbuffer rendering must call
3688 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3689 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3690 *
3691 * Modesetting drivers which always update the frontbuffer do not need to
3692 * implement the corresponding ->dirty framebuffer callback.
3693 *
3694 * Called by the user via ioctl.
3695 *
3696 * Returns:
1a498633 3697 * Zero on success, negative errno on failure.
c8e32cc1 3698 */
884840aa
JB		 3699int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3700 void *data, struct drm_file *file_priv)
3701{
3702 struct drm_clip_rect __user *clips_ptr;
3703 struct drm_clip_rect *clips = NULL;
3704 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 3705 struct drm_framebuffer *fb;
3706 unsigned flags;
3707 int num_clips;
4a1b0714 3708 int ret;
884840aa 3709
fb3b06c8
DA		 3710 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3711 return -EINVAL;
3712
786b99ed 3713 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 3714 if (!fb)
37c4e705 3715 return -ENOENT;
884840aa
JB		 3716
3717 num_clips = r->num_clips;
81f6c7f8 3718 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 3719
3720 if (!num_clips != !clips_ptr) {
3721 ret = -EINVAL;
3722 goto out_err1;
3723 }
3724
3725 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3726
3727 /* If userspace annotates copy, clips must come in pairs */
3728 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3729 ret = -EINVAL;
3730 goto out_err1;
3731 }
3732
3733 if (num_clips && clips_ptr) {
a5cd3351
XW		 3734 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3735 ret = -EINVAL;
3736 goto out_err1;
3737 }
bd3f0ff9 3738 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
884840aa
JB		 3739 if (!clips) {
3740 ret = -ENOMEM;
3741 goto out_err1;
3742 }
3743
3744 ret = copy_from_user(clips, clips_ptr,
3745 num_clips * sizeof(*clips));
e902a358
DC		 3746 if (ret) {
3747 ret = -EFAULT;
884840aa 3748 goto out_err2;
e902a358 3749 }
884840aa
JB		 3750 }
3751
3752 if (fb->funcs->dirty) {
02b00162
TH		 3753 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3754 clips, num_clips);
884840aa
JB		 3755 } else {
3756 ret = -ENOSYS;
884840aa
JB		 3757 }
3758
3759out_err2:
3760 kfree(clips);
3761out_err1:
4ccf097f
DV		 3762 drm_framebuffer_unreference(fb);
3763
884840aa
JB		 3764 return ret;
3765}
3766
f453ba04
DA		 3767/**
3768 * drm_fb_release - remove and free the FBs on this file
065a50ed 3769 * @priv: drm file for the ioctl
f453ba04 3770 *
f453ba04
DA		 3771 * Destroy all the FBs associated with @filp.
3772 *
3773 * Called by the user via ioctl.
3774 *
c8e32cc1 3775 * Returns:
1a498633 3776 * Zero on success, negative errno on failure.
f453ba04 3777 */
ea39f835 3778void drm_fb_release(struct drm_file *priv)
f453ba04 3779{
f453ba04 3780 struct drm_framebuffer *fb, *tfb;
f2d580b9
ML		 3781 struct drm_mode_rmfb_work arg;
3782
3783 INIT_LIST_HEAD(&arg.fbs);
f453ba04 3784
1b116297
DV		 3785 /*
3786 * When the file gets released that means no one else can access the fb
e2db726b 3787 * list any more, so no need to grab fpriv->fbs_lock. And we need to
1b116297
DV		 3788 * avoid upsetting lockdep since the universal cursor code adds a
3789 * framebuffer while holding mutex locks.
3790 *
3791 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3792 * locks is impossible here since no one else but this function can get
3793 * at it any more.
3794 */
f453ba04 3795 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
f2d580b9
ML		 3796 if (drm_framebuffer_read_refcount(fb) > 1) {
3797 list_move_tail(&fb->filp_head, &arg.fbs);
3798 } else {
3799 list_del_init(&fb->filp_head);
2b677e8c 3800
f2d580b9
ML		 3801 /* This drops the fpriv->fbs reference. */
3802 drm_framebuffer_unreference(fb);
3803 }
3804 }
3805
3806 if (!list_empty(&arg.fbs)) {
3807 INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
3808
3809 schedule_work(&arg.work);
3810 flush_work(&arg.work);
3811 destroy_work_on_stack(&arg.work);
f453ba04 3812 }
f453ba04
DA		 3813}
3814
81065548
DV		 3815static bool drm_property_type_valid(struct drm_property *property)
3816{
3817 if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
3818 return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
3819 return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
3820}
3821
c8e32cc1
DV		 3822/**
3823 * drm_property_create - create a new property type
3824 * @dev: drm device
3825 * @flags: flags specifying the property type
3826 * @name: name of the property
3827 * @num_values: number of pre-defined values
3828 *
3829 * This creates a new generic drm property which can then be attached to a drm
3830 * object with drm_object_attach_property. The returned property object must be
3831 * freed with drm_property_destroy.
3832 *
3b5b9932
DL		 3833 * Note that the DRM core keeps a per-device list of properties and that, if
3834 * drm_mode_config_cleanup() is called, it will destroy all properties created
3835 * by the driver.
3836 *
c8e32cc1
DV		 3837 * Returns:
3838 * A pointer to the newly created property on success, NULL on failure.
3839 */
f453ba04
DA		 3840struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3841 const char *name, int num_values)
3842{
3843 struct drm_property *property = NULL;
6bfc56aa 3844 int ret;
f453ba04
DA		 3845
3846 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3847 if (!property)
3848 return NULL;
3849
98f75de4
RC		 3850 property->dev = dev;
3851
f453ba04 3852 if (num_values) {
bd3f0ff9
TR		 3853 property->values = kcalloc(num_values, sizeof(uint64_t),
3854 GFP_KERNEL);
f453ba04
DA		 3855 if (!property->values)
3856 goto fail;
3857 }
3858
6bfc56aa
VS		 3859 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3860 if (ret)
3861 goto fail;
3862
f453ba04
DA		 3863 property->flags = flags;
3864 property->num_values = num_values;
3758b341 3865 INIT_LIST_HEAD(&property->enum_list);
f453ba04 3866
471dd2ef 3867 if (name) {
f453ba04 3868 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3869 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3870 }
f453ba04
DA		 3871
3872 list_add_tail(&property->head, &dev->mode_config.property_list);
5ea22f24
RC		 3873
3874 WARN_ON(!drm_property_type_valid(property));
3875
f453ba04
DA		 3876 return property;
3877fail:
6bfc56aa 3878 kfree(property->values);
f453ba04
DA		 3879 kfree(property);
3880 return NULL;
3881}
3882EXPORT_SYMBOL(drm_property_create);
3883
c8e32cc1 3884/**
2aa9d2bc 3885 * drm_property_create_enum - create a new enumeration property type
c8e32cc1
DV		 3886 * @dev: drm device
3887 * @flags: flags specifying the property type
3888 * @name: name of the property
3889 * @props: enumeration lists with property values
3890 * @num_values: number of pre-defined values
3891 *
3892 * This creates a new generic drm property which can then be attached to a drm
3893 * object with drm_object_attach_property. The returned property object must be
3894 * freed with drm_property_destroy.
3895 *
3896 * Userspace is only allowed to set one of the predefined values for enumeration
3897 * properties.
3898 *
3899 * Returns:
3900 * A pointer to the newly created property on success, NULL on failure.
3901 */
4a67d391
SH		 3902struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3903 const char *name,
3904 const struct drm_prop_enum_list *props,
3905 int num_values)
3906{
3907 struct drm_property *property;
3908 int i, ret;
3909
3910 flags |= DRM_MODE_PROP_ENUM;
3911
3912 property = drm_property_create(dev, flags, name, num_values);
3913 if (!property)
3914 return NULL;
3915
3916 for (i = 0; i < num_values; i++) {
3917 ret = drm_property_add_enum(property, i,
3918 props[i].type,
3919 props[i].name);
3920 if (ret) {
3921 drm_property_destroy(dev, property);
3922 return NULL;
3923 }
3924 }
3925
3926 return property;
3927}
3928EXPORT_SYMBOL(drm_property_create_enum);
3929
c8e32cc1 3930/**
2aa9d2bc 3931 * drm_property_create_bitmask - create a new bitmask property type
c8e32cc1
DV		 3932 * @dev: drm device
3933 * @flags: flags specifying the property type
3934 * @name: name of the property
3935 * @props: enumeration lists with property bitflags
295ee853
DV		 3936 * @num_props: size of the @props array
3937 * @supported_bits: bitmask of all supported enumeration values
c8e32cc1 3938 *
295ee853 3939 * This creates a new bitmask drm property which can then be attached to a drm
c8e32cc1
DV		 3940 * object with drm_object_attach_property. The returned property object must be
3941 * freed with drm_property_destroy.
3942 *
3943 * Compared to plain enumeration properties userspace is allowed to set any
3944 * or'ed together combination of the predefined property bitflag values
3945 *
3946 * Returns:
3947 * A pointer to the newly created property on success, NULL on failure.
3948 */
49e27545
RC		 3949struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3950 int flags, const char *name,
3951 const struct drm_prop_enum_list *props,
7689ffb3
VS		 3952 int num_props,
3953 uint64_t supported_bits)
49e27545
RC		 3954{
3955 struct drm_property *property;
7689ffb3
VS		 3956 int i, ret, index = 0;
3957 int num_values = hweight64(supported_bits);
49e27545
RC		 3958
3959 flags |= DRM_MODE_PROP_BITMASK;
3960
3961 property = drm_property_create(dev, flags, name, num_values);
3962 if (!property)
3963 return NULL;
7689ffb3
VS		 3964 for (i = 0; i < num_props; i++) {
3965 if (!(supported_bits & (1ULL << props[i].type)))
3966 continue;
49e27545 3967
7689ffb3
VS		 3968 if (WARN_ON(index >= num_values)) {
3969 drm_property_destroy(dev, property);
3970 return NULL;
3971 }
3972
3973 ret = drm_property_add_enum(property, index++,
49e27545
RC		 3974 props[i].type,
3975 props[i].name);
3976 if (ret) {
3977 drm_property_destroy(dev, property);
3978 return NULL;
3979 }
3980 }
3981
3982 return property;
3983}
3984EXPORT_SYMBOL(drm_property_create_bitmask);
3985
ebc44cf3
RC		 3986static struct drm_property *property_create_range(struct drm_device *dev,
3987 int flags, const char *name,
3988 uint64_t min, uint64_t max)
3989{
3990 struct drm_property *property;
3991
3992 property = drm_property_create(dev, flags, name, 2);
3993 if (!property)
3994 return NULL;
3995
3996 property->values[0] = min;
3997 property->values[1] = max;
3998
3999 return property;
4000}
4001
c8e32cc1 4002/**
960cd9d4 4003 * drm_property_create_range - create a new unsigned ranged property type
c8e32cc1
DV		 4004 * @dev: drm device
4005 * @flags: flags specifying the property type
4006 * @name: name of the property
4007 * @min: minimum value of the property
4008 * @max: maximum value of the property
4009 *
4010 * This creates a new generic drm property which can then be attached to a drm
4011 * object with drm_object_attach_property. The returned property object must be
4012 * freed with drm_property_destroy.
4013 *
960cd9d4
DV		 4014 * Userspace is allowed to set any unsigned integer value in the (min, max)
4015 * range inclusive.
c8e32cc1
DV		 4016 *
4017 * Returns:
4018 * A pointer to the newly created property on success, NULL on failure.
4019 */
d9bc3c02
SH		 4020struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
4021 const char *name,
4022 uint64_t min, uint64_t max)
4023{
ebc44cf3
RC		 4024 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
4025 name, min, max);
d9bc3c02
SH		 4026}
4027EXPORT_SYMBOL(drm_property_create_range);
4028
960cd9d4
DV		 4029/**
4030 * drm_property_create_signed_range - create a new signed ranged property type
4031 * @dev: drm device
4032 * @flags: flags specifying the property type
4033 * @name: name of the property
4034 * @min: minimum value of the property
4035 * @max: maximum value of the property
4036 *
4037 * This creates a new generic drm property which can then be attached to a drm
4038 * object with drm_object_attach_property. The returned property object must be
4039 * freed with drm_property_destroy.
4040 *
4041 * Userspace is allowed to set any signed integer value in the (min, max)
4042 * range inclusive.
4043 *
4044 * Returns:
4045 * A pointer to the newly created property on success, NULL on failure.
4046 */
ebc44cf3
RC		 4047struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
4048 int flags, const char *name,
4049 int64_t min, int64_t max)
4050{
4051 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
4052 name, I642U64(min), I642U64(max));
4053}
4054EXPORT_SYMBOL(drm_property_create_signed_range);
4055
960cd9d4
DV		 4056/**
4057 * drm_property_create_object - create a new object property type
4058 * @dev: drm device
4059 * @flags: flags specifying the property type
4060 * @name: name of the property
4061 * @type: object type from DRM_MODE_OBJECT_* defines
4062 *
4063 * This creates a new generic drm property which can then be attached to a drm
4064 * object with drm_object_attach_property. The returned property object must be
4065 * freed with drm_property_destroy.
4066 *
4067 * Userspace is only allowed to set this to any property value of the given
4068 * @type. Only useful for atomic properties, which is enforced.
4069 *
4070 * Returns:
4071 * A pointer to the newly created property on success, NULL on failure.
4072 */
98f75de4
RC		 4073struct drm_property *drm_property_create_object(struct drm_device *dev,
4074 int flags, const char *name, uint32_t type)
4075{
4076 struct drm_property *property;
4077
4078 flags |= DRM_MODE_PROP_OBJECT;
4079
960cd9d4
DV		 4080 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
4081 return NULL;
4082
98f75de4
RC		 4083 property = drm_property_create(dev, flags, name, 1);
4084 if (!property)
4085 return NULL;
4086
4087 property->values[0] = type;
4088
4089 return property;
4090}
4091EXPORT_SYMBOL(drm_property_create_object);
4092
960cd9d4
DV		 4093/**
4094 * drm_property_create_bool - create a new boolean property type
4095 * @dev: drm device
4096 * @flags: flags specifying the property type
4097 * @name: name of the property
4098 *
4099 * This creates a new generic drm property which can then be attached to a drm
4100 * object with drm_object_attach_property. The returned property object must be
4101 * freed with drm_property_destroy.
4102 *
4103 * This is implemented as a ranged property with only {0, 1} as valid values.
4104 *
4105 * Returns:
4106 * A pointer to the newly created property on success, NULL on failure.
4107 */
4108struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
4109 const char *name)
4110{
4111 return drm_property_create_range(dev, flags, name, 0, 1);
4112}
4113EXPORT_SYMBOL(drm_property_create_bool);
4114
c8e32cc1
DV		 4115/**
4116 * drm_property_add_enum - add a possible value to an enumeration property
4117 * @property: enumeration property to change
4118 * @index: index of the new enumeration
4119 * @value: value of the new enumeration
4120 * @name: symbolic name of the new enumeration
4121 *
4122 * This functions adds enumerations to a property.
4123 *
4124 * It's use is deprecated, drivers should use one of the more specific helpers
4125 * to directly create the property with all enumerations already attached.
4126 *
4127 * Returns:
4128 * Zero on success, error code on failure.
4129 */
f453ba04
DA		 4130int drm_property_add_enum(struct drm_property *property, int index,
4131 uint64_t value, const char *name)
4132{
4133 struct drm_property_enum *prop_enum;
4134
5ea22f24
RC		 4135 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4136 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
49e27545
RC		 4137 return -EINVAL;
4138
4139 /*
4140 * Bitmask enum properties have the additional constraint of values
4141 * from 0 to 63
4142 */
5ea22f24
RC		 4143 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
4144 (value > 63))
f453ba04
DA		 4145 return -EINVAL;
4146
3758b341
DV		 4147 if (!list_empty(&property->enum_list)) {
4148 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 4149 if (prop_enum->value == value) {
4150 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4151 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4152 return 0;
4153 }
4154 }
4155 }
4156
4157 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
4158 if (!prop_enum)
4159 return -ENOMEM;
4160
4161 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4162 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4163 prop_enum->value = value;
4164
4165 property->values[index] = value;
3758b341 4166 list_add_tail(&prop_enum->head, &property->enum_list);
f453ba04
DA		 4167 return 0;
4168}
4169EXPORT_SYMBOL(drm_property_add_enum);
4170
c8e32cc1
DV		 4171/**
4172 * drm_property_destroy - destroy a drm property
4173 * @dev: drm device
4174 * @property: property to destry
4175 *
4176 * This function frees a property including any attached resources like
4177 * enumeration values.
4178 */
f453ba04
DA		 4179void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
4180{
4181 struct drm_property_enum *prop_enum, *pt;
4182
3758b341 4183 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
f453ba04
DA		 4184 list_del(&prop_enum->head);
4185 kfree(prop_enum);
4186 }
4187
4188 if (property->num_values)
4189 kfree(property->values);
7c8f6d25 4190 drm_mode_object_unregister(dev, &property->base);
f453ba04
DA		 4191 list_del(&property->head);
4192 kfree(property);
4193}
4194EXPORT_SYMBOL(drm_property_destroy);
4195
c8e32cc1
DV		 4196/**
4197 * drm_object_attach_property - attach a property to a modeset object
4198 * @obj: drm modeset object
4199 * @property: property to attach
4200 * @init_val: initial value of the property
4201 *
4202 * This attaches the given property to the modeset object with the given initial
4203 * value. Currently this function cannot fail since the properties are stored in
4204 * a statically sized array.
4205 */
c543188a
PZ		 4206void drm_object_attach_property(struct drm_mode_object *obj,
4207 struct drm_property *property,
4208 uint64_t init_val)
4209{
7f88a9be 4210 int count = obj->properties->count;
c543188a 4211
7f88a9be
PZ		 4212 if (count == DRM_OBJECT_MAX_PROPERTY) {
4213 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4214 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4215 "you see this message on the same object type.\n",
4216 obj->type);
4217 return;
c543188a
PZ		 4218 }
4219
b17cd757 4220 obj->properties->properties[count] = property;
7f88a9be
PZ		 4221 obj->properties->values[count] = init_val;
4222 obj->properties->count++;
88a48e29
RC		 4223 if (property->flags & DRM_MODE_PROP_ATOMIC)
4224 obj->properties->atomic_count++;
c543188a
PZ		 4225}
4226EXPORT_SYMBOL(drm_object_attach_property);
4227
c8e32cc1
DV		 4228/**
4229 * drm_object_property_set_value - set the value of a property
4230 * @obj: drm mode object to set property value for
4231 * @property: property to set
4232 * @val: value the property should be set to
4233 *
4234 * This functions sets a given property on a given object. This function only
4235 * changes the software state of the property, it does not call into the
4236 * driver's ->set_property callback.
4237 *
4238 * Returns:
4239 * Zero on success, error code on failure.
4240 */
c543188a
PZ		 4241int drm_object_property_set_value(struct drm_mode_object *obj,
4242 struct drm_property *property, uint64_t val)
4243{
4244 int i;
4245
7f88a9be 4246 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4247 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4248 obj->properties->values[i] = val;
4249 return 0;
4250 }
4251 }
4252
4253 return -EINVAL;
4254}
4255EXPORT_SYMBOL(drm_object_property_set_value);
4256
c8e32cc1
DV		 4257/**
4258 * drm_object_property_get_value - retrieve the value of a property
4259 * @obj: drm mode object to get property value from
4260 * @property: property to retrieve
4261 * @val: storage for the property value
4262 *
4263 * This function retrieves the softare state of the given property for the given
4264 * property. Since there is no driver callback to retrieve the current property
4265 * value this might be out of sync with the hardware, depending upon the driver
4266 * and property.
4267 *
4268 * Returns:
4269 * Zero on success, error code on failure.
4270 */
c543188a
PZ		 4271int drm_object_property_get_value(struct drm_mode_object *obj,
4272 struct drm_property *property, uint64_t *val)
4273{
4274 int i;
4275
88a48e29
RC		 4276 /* read-only properties bypass atomic mechanism and still store
4277 * their value in obj->properties->values[].. mostly to avoid
4278 * having to deal w/ EDID and similar props in atomic paths:
4279 */
4280 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4281 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4282 return drm_atomic_get_property(obj, property, val);
4283
7f88a9be 4284 for (i = 0; i < obj->properties->count; i++) {
b17cd757 4285 if (obj->properties->properties[i] == property) {
c543188a
PZ		 4286 *val = obj->properties->values[i];
4287 return 0;
4288 }
4289 }
4290
4291 return -EINVAL;
4292}
4293EXPORT_SYMBOL(drm_object_property_get_value);
4294
c8e32cc1 4295/**
1a498633 4296 * drm_mode_getproperty_ioctl - get the property metadata
c8e32cc1
DV		 4297 * @dev: DRM device
4298 * @data: ioctl data
4299 * @file_priv: DRM file info
4300 *
1a498633
DV		 4301 * This function retrieves the metadata for a given property, like the different
4302 * possible values for an enum property or the limits for a range property.
4303 *
4304 * Blob properties are special
c8e32cc1
DV		 4305 *
4306 * Called by the user via ioctl.
4307 *
4308 * Returns:
1a498633 4309 * Zero on success, negative errno on failure.
c8e32cc1 4310 */
f453ba04
DA		 4311int drm_mode_getproperty_ioctl(struct drm_device *dev,
4312 void *data, struct drm_file *file_priv)
4313{
f453ba04
DA		 4314 struct drm_mode_get_property *out_resp = data;
4315 struct drm_property *property;
4316 int enum_count = 0;
f453ba04
DA		 4317 int value_count = 0;
4318 int ret = 0, i;
4319 int copied;
4320 struct drm_property_enum *prop_enum;
4321 struct drm_mode_property_enum __user *enum_ptr;
f453ba04 4322 uint64_t __user *values_ptr;
f453ba04 4323
fb3b06c8
DA		 4324 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4325 return -EINVAL;
4326
84849903 4327 drm_modeset_lock_all(dev);
a2b34e22
RC		 4328 property = drm_property_find(dev, out_resp->prop_id);
4329 if (!property) {
f27657f2 4330 ret = -ENOENT;
f453ba04
DA		 4331 goto done;
4332 }
f453ba04 4333
5ea22f24
RC		 4334 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4335 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3758b341 4336 list_for_each_entry(prop_enum, &property->enum_list, head)
f453ba04 4337 enum_count++;
f453ba04
DA		 4338 }
4339
4340 value_count = property->num_values;
4341
4342 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4343 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4344 out_resp->flags = property->flags;
4345
4346 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 4347 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 4348 for (i = 0; i < value_count; i++) {
4349 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4350 ret = -EFAULT;
4351 goto done;
4352 }
4353 }
4354 }
4355 out_resp->count_values = value_count;
4356
5ea22f24
RC		 4357 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4358 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 4359 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4360 copied = 0;
81f6c7f8 4361 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3758b341 4362 list_for_each_entry(prop_enum, &property->enum_list, head) {
f453ba04
DA		 4363
4364 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4365 ret = -EFAULT;
4366 goto done;
4367 }
4368
4369 if (copy_to_user(&enum_ptr[copied].name,
4370 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4371 ret = -EFAULT;
4372 goto done;
4373 }
4374 copied++;
4375 }
4376 }
4377 out_resp->count_enum_blobs = enum_count;
4378 }
4379
3758b341
DV		 4380 /*
4381 * NOTE: The idea seems to have been to use this to read all the blob
4382 * property values. But nothing ever added them to the corresponding
4383 * list, userspace always used the special-purpose get_blob ioctl to
4384 * read the value for a blob property. It also doesn't make a lot of
4385 * sense to return values here when everything else is just metadata for
4386 * the property itself.
4387 */
4388 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4389 out_resp->count_enum_blobs = 0;
f453ba04 4390done:
84849903 4391 drm_modeset_unlock_all(dev);
f453ba04
DA		 4392 return ret;
4393}
4394
152ef5fa
DV		 4395static void drm_property_free_blob(struct kref *kref)
4396{
4397 struct drm_property_blob *blob =
4398 container_of(kref, struct drm_property_blob, base.refcount);
4399
4400 mutex_lock(&blob->dev->mode_config.blob_lock);
4401 list_del(&blob->head_global);
4402 mutex_unlock(&blob->dev->mode_config.blob_lock);
4403
4404 drm_mode_object_unregister(blob->dev, &blob->base);
4405
4406 kfree(blob);
4407}
4408
99531d9b
DS		 4409/**
4410 * drm_property_create_blob - Create new blob property
4411 *
4412 * Creates a new blob property for a specified DRM device, optionally
4413 * copying data.
4414 *
4415 * @dev: DRM device to create property for
4416 * @length: Length to allocate for blob data
4417 * @data: If specified, copies data into blob
10e8cb7e
DS		 4418 *
4419 * Returns:
4420 * New blob property with a single reference on success, or an ERR_PTR
4421 * value on failure.
99531d9b 4422 */
6bcacf51 4423struct drm_property_blob *
ecbbe59b 4424drm_property_create_blob(struct drm_device *dev, size_t length,
12e6cecd 4425 const void *data)
f453ba04
DA		 4426{
4427 struct drm_property_blob *blob;
6bfc56aa 4428 int ret;
f453ba04 4429
9ac0934b 4430 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
10e8cb7e 4431 return ERR_PTR(-EINVAL);
f453ba04
DA		 4432
4433 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4434 if (!blob)
10e8cb7e 4435 return ERR_PTR(-ENOMEM);
f453ba04 4436
e2f5d2ea
DS		 4437 /* This must be explicitly initialised, so we can safely call list_del
4438 * on it in the removal handler, even if it isn't in a file list. */
4439 INIT_LIST_HEAD(&blob->head_file);
8fb6e7a5 4440 blob->length = length;
6bcacf51 4441 blob->dev = dev;
8fb6e7a5 4442
99531d9b
DS		 4443 if (data)
4444 memcpy(blob->data, data, length);
8fb6e7a5 4445
152ef5fa
DV		 4446 ret = drm_mode_object_get_reg(dev, &blob->base, DRM_MODE_OBJECT_BLOB,
4447 true, drm_property_free_blob);
6bfc56aa
VS		 4448 if (ret) {
4449 kfree(blob);
10e8cb7e 4450 return ERR_PTR(-EINVAL);
6bfc56aa
VS		 4451 }
4452
152ef5fa 4453 mutex_lock(&dev->mode_config.blob_lock);
e2f5d2ea
DS		 4454 list_add_tail(&blob->head_global,
4455 &dev->mode_config.property_blob_list);
8fb6e7a5 4456 mutex_unlock(&dev->mode_config.blob_lock);
f453ba04 4457
f453ba04
DA		 4458 return blob;
4459}
6bcacf51 4460EXPORT_SYMBOL(drm_property_create_blob);
f453ba04 4461
6bcacf51
DS		 4462/**
4463 * drm_property_unreference_blob - Unreference a blob property
4464 *
4465 * Drop a reference on a blob property. May free the object.
4466 *
f102c16e 4467 * @blob: Pointer to blob property
6bcacf51
DS		 4468 */
4469void drm_property_unreference_blob(struct drm_property_blob *blob)
4470{
6bcacf51
DS		 4471 if (!blob)
4472 return;
4473
152ef5fa 4474 drm_mode_object_unreference(&blob->base);
6bcacf51
DS		 4475}
4476EXPORT_SYMBOL(drm_property_unreference_blob);
4477
e2f5d2ea
DS		 4478/**
4479 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4480 * @dev: DRM device
4481 * @file_priv: destroy all blobs owned by this file handle
4482 */
4483void drm_property_destroy_user_blobs(struct drm_device *dev,
4484 struct drm_file *file_priv)
4485{
4486 struct drm_property_blob *blob, *bt;
4487
152ef5fa
DV		 4488 /*
4489 * When the file gets released that means no one else can access the
4490 * blob list any more, so no need to grab dev->blob_lock.
4491 */
e2f5d2ea
DS		 4492 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4493 list_del_init(&blob->head_file);
152ef5fa 4494 drm_property_unreference_blob(blob);
e2f5d2ea 4495 }
e2f5d2ea
DS		 4496}
4497
6bcacf51
DS		 4498/**
4499 * drm_property_reference_blob - Take a reference on an existing property
4500 *
4501 * Take a new reference on an existing blob property.
4502 *
f102c16e 4503 * @blob: Pointer to blob property
6bcacf51
DS		 4504 */
4505struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4506{
152ef5fa 4507 drm_mode_object_reference(&blob->base);
6bcacf51
DS		 4508 return blob;
4509}
4510EXPORT_SYMBOL(drm_property_reference_blob);
4511
6bcacf51
DS		 4512/**
4513 * drm_property_lookup_blob - look up a blob property and take a reference
4514 * @dev: drm device
4515 * @id: id of the blob property
4516 *
4517 * If successful, this takes an additional reference to the blob property.
4518 * callers need to make sure to eventually unreference the returned property
4519 * again, using @drm_property_unreference_blob.
4520 */
4521struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4522 uint32_t id)
4523{
152ef5fa
DV		 4524 struct drm_mode_object *obj;
4525 struct drm_property_blob *blob = NULL;
6bcacf51 4526
152ef5fa
DV		 4527 obj = _object_find(dev, id, DRM_MODE_OBJECT_BLOB);
4528 if (obj)
4529 blob = obj_to_blob(obj);
6bcacf51
DS		 4530 return blob;
4531}
4532EXPORT_SYMBOL(drm_property_lookup_blob);
4533
d2ed3436
DS		 4534/**
4535 * drm_property_replace_global_blob - atomically replace existing blob property
4536 * @dev: drm device
4537 * @replace: location of blob property pointer to be replaced
4538 * @length: length of data for new blob, or 0 for no data
4539 * @data: content for new blob, or NULL for no data
4540 * @obj_holds_id: optional object for property holding blob ID
4541 * @prop_holds_id: optional property holding blob ID
4542 * @return 0 on success or error on failure
4543 *
4544 * This function will atomically replace a global property in the blob list,
4545 * optionally updating a property which holds the ID of that property. It is
4546 * guaranteed to be atomic: no caller will be allowed to see intermediate
4547 * results, and either the entire operation will succeed and clean up the
4548 * previous property, or it will fail and the state will be unchanged.
4549 *
4550 * If length is 0 or data is NULL, no new blob will be created, and the holding
4551 * property, if specified, will be set to 0.
4552 *
4553 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4554 * by holding the relevant modesetting object lock for its parent.
4555 *
4556 * For example, a drm_connector has a 'PATH' property, which contains the ID
4557 * of a blob property with the value of the MST path information. Calling this
4558 * function with replace pointing to the connector's path_blob_ptr, length and
4559 * data set for the new path information, obj_holds_id set to the connector's
4560 * base object, and prop_holds_id set to the path property name, will perform
4561 * a completely atomic update. The access to path_blob_ptr is protected by the
4562 * caller holding a lock on the connector.
4563 */
4564static int drm_property_replace_global_blob(struct drm_device *dev,
4565 struct drm_property_blob **replace,
4566 size_t length,
4567 const void *data,
4568 struct drm_mode_object *obj_holds_id,
4569 struct drm_property *prop_holds_id)
4570{
4571 struct drm_property_blob *new_blob = NULL;
4572 struct drm_property_blob *old_blob = NULL;
4573 int ret;
4574
4575 WARN_ON(replace == NULL);
4576
4577 old_blob = *replace;
4578
4579 if (length && data) {
4580 new_blob = drm_property_create_blob(dev, length, data);
10e8cb7e
DS		 4581 if (IS_ERR(new_blob))
4582 return PTR_ERR(new_blob);
d2ed3436
DS		 4583 }
4584
4585 /* This does not need to be synchronised with blob_lock, as the
4586 * get_properties ioctl locks all modesetting objects, and
4587 * obj_holds_id must be locked before calling here, so we cannot
4588 * have its value out of sync with the list membership modified
4589 * below under blob_lock. */
4590 if (obj_holds_id) {
4591 ret = drm_object_property_set_value(obj_holds_id,
4592 prop_holds_id,
4593 new_blob ?
4594 new_blob->base.id : 0);
4595 if (ret != 0)
4596 goto err_created;
4597 }
4598
ec530829 4599 drm_property_unreference_blob(old_blob);
d2ed3436
DS		 4600 *replace = new_blob;
4601
4602 return 0;
4603
4604err_created:
6bcacf51 4605 drm_property_unreference_blob(new_blob);
d2ed3436
DS		 4606 return ret;
4607}
4608
c8e32cc1
DV		 4609/**
4610 * drm_mode_getblob_ioctl - get the contents of a blob property value
4611 * @dev: DRM device
4612 * @data: ioctl data
4613 * @file_priv: DRM file info
4614 *
4615 * This function retrieves the contents of a blob property. The value stored in
4616 * an object's blob property is just a normal modeset object id.
4617 *
4618 * Called by the user via ioctl.
4619 *
4620 * Returns:
1a498633 4621 * Zero on success, negative errno on failure.
c8e32cc1 4622 */
f453ba04
DA		 4623int drm_mode_getblob_ioctl(struct drm_device *dev,
4624 void *data, struct drm_file *file_priv)
4625{
f453ba04
DA		 4626 struct drm_mode_get_blob *out_resp = data;
4627 struct drm_property_blob *blob;
4628 int ret = 0;
81f6c7f8 4629 void __user *blob_ptr;
f453ba04 4630
fb3b06c8
DA		 4631 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4632 return -EINVAL;
4633
152ef5fa
DV		 4634 blob = drm_property_lookup_blob(dev, out_resp->blob_id);
4635 if (!blob)
4636 return -ENOENT;
f453ba04
DA		 4637
4638 if (out_resp->length == blob->length) {
81f6c7f8 4639 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4dfd909f 4640 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
f453ba04 4641 ret = -EFAULT;
152ef5fa 4642 goto unref;
f453ba04
DA		 4643 }
4644 }
4645 out_resp->length = blob->length;
152ef5fa
DV		 4646unref:
4647 drm_property_unreference_blob(blob);
f453ba04 4648
f453ba04
DA		 4649 return ret;
4650}
4651
e2f5d2ea
DS		 4652/**
4653 * drm_mode_createblob_ioctl - create a new blob property
4654 * @dev: DRM device
4655 * @data: ioctl data
4656 * @file_priv: DRM file info
4657 *
4658 * This function creates a new blob property with user-defined values. In order
4659 * to give us sensible validation and checking when creating, rather than at
4660 * every potential use, we also require a type to be provided upfront.
4661 *
4662 * Called by the user via ioctl.
4663 *
4664 * Returns:
4665 * Zero on success, negative errno on failure.
4666 */
4667int drm_mode_createblob_ioctl(struct drm_device *dev,
4668 void *data, struct drm_file *file_priv)
4669{
4670 struct drm_mode_create_blob *out_resp = data;
4671 struct drm_property_blob *blob;
4672 void __user *blob_ptr;
4673 int ret = 0;
4674
4675 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4676 return -EINVAL;
4677
4678 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4679 if (IS_ERR(blob))
4680 return PTR_ERR(blob);
4681
4682 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4683 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4684 ret = -EFAULT;
4685 goto out_blob;
4686 }
4687
4688 /* Dropping the lock between create_blob and our access here is safe
4689 * as only the same file_priv can remove the blob; at this point, it is
4690 * not associated with any file_priv. */
4691 mutex_lock(&dev->mode_config.blob_lock);
4692 out_resp->blob_id = blob->base.id;
8731b269 4693 list_add_tail(&blob->head_file, &file_priv->blobs);
e2f5d2ea
DS		 4694 mutex_unlock(&dev->mode_config.blob_lock);
4695
4696 return 0;
4697
4698out_blob:
4699 drm_property_unreference_blob(blob);
4700 return ret;
4701}
4702
4703/**
4704 * drm_mode_destroyblob_ioctl - destroy a user blob property
4705 * @dev: DRM device
4706 * @data: ioctl data
4707 * @file_priv: DRM file info
4708 *
4709 * Destroy an existing user-defined blob property.
4710 *
4711 * Called by the user via ioctl.
4712 *
4713 * Returns:
4714 * Zero on success, negative errno on failure.
4715 */
4716int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4717 void *data, struct drm_file *file_priv)
4718{
4719 struct drm_mode_destroy_blob *out_resp = data;
4720 struct drm_property_blob *blob = NULL, *bt;
4721 bool found = false;
4722 int ret = 0;
4723
4724 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4725 return -EINVAL;
4726
152ef5fa
DV		 4727 blob = drm_property_lookup_blob(dev, out_resp->blob_id);
4728 if (!blob)
4729 return -ENOENT;
e2f5d2ea 4730
152ef5fa 4731 mutex_lock(&dev->mode_config.blob_lock);
e2f5d2ea
DS		 4732 /* Ensure the property was actually created by this user. */
4733 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4734 if (bt == blob) {
4735 found = true;
4736 break;
4737 }
4738 }
4739
4740 if (!found) {
4741 ret = -EPERM;
4742 goto err;
4743 }
4744
4745 /* We must drop head_file here, because we may not be the last
4746 * reference on the blob. */
4747 list_del_init(&blob->head_file);
e2f5d2ea
DS		 4748 mutex_unlock(&dev->mode_config.blob_lock);
4749
152ef5fa
DV		 4750 /* One reference from lookup, and one from the filp. */
4751 drm_property_unreference_blob(blob);
4752 drm_property_unreference_blob(blob);
4753
e2f5d2ea
DS		 4754 return 0;
4755
4756err:
4757 mutex_unlock(&dev->mode_config.blob_lock);
152ef5fa
DV		 4758 drm_property_unreference_blob(blob);
4759
e2f5d2ea
DS		 4760 return ret;
4761}
4762
cc7096fb
DA		 4763/**
4764 * drm_mode_connector_set_path_property - set tile property on connector
4765 * @connector: connector to set property on.
d2ed3436 4766 * @path: path to use for property; must not be NULL.
cc7096fb
DA		 4767 *
4768 * This creates a property to expose to userspace to specify a
4769 * connector path. This is mainly used for DisplayPort MST where
4770 * connectors have a topology and we want to allow userspace to give
4771 * them more meaningful names.
4772 *
4773 * Returns:
1a498633 4774 * Zero on success, negative errno on failure.
cc7096fb 4775 */
43aba7eb 4776int drm_mode_connector_set_path_property(struct drm_connector *connector,
12e6cecd 4777 const char *path)
43aba7eb
DA		 4778{
4779 struct drm_device *dev = connector->dev;
ecbbe59b 4780 int ret;
43aba7eb 4781
d2ed3436
DS		 4782 ret = drm_property_replace_global_blob(dev,
4783 &connector->path_blob_ptr,
4784 strlen(path) + 1,
4785 path,
4786 &connector->base,
4787 dev->mode_config.path_property);
43aba7eb
DA		 4788 return ret;
4789}
4790EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4791
6f134d7b
DA		 4792/**
4793 * drm_mode_connector_set_tile_property - set tile property on connector
4794 * @connector: connector to set property on.
4795 *
4796 * This looks up the tile information for a connector, and creates a
4797 * property for userspace to parse if it exists. The property is of
4798 * the form of 8 integers using ':' as a separator.
4799 *
4800 * Returns:
4801 * Zero on success, errno on failure.
4802 */
4803int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4804{
4805 struct drm_device *dev = connector->dev;
6f134d7b 4806 char tile[256];
d2ed3436 4807 int ret;
6f134d7b
DA		 4808
4809 if (!connector->has_tile) {
d2ed3436
DS		 4810 ret = drm_property_replace_global_blob(dev,
4811 &connector->tile_blob_ptr,
4812 0,
4813 NULL,
4814 &connector->base,
4815 dev->mode_config.tile_property);
6f134d7b
DA		 4816 return ret;
4817 }
4818
4819 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4820 connector->tile_group->id, connector->tile_is_single_monitor,
4821 connector->num_h_tile, connector->num_v_tile,
4822 connector->tile_h_loc, connector->tile_v_loc,
4823 connector->tile_h_size, connector->tile_v_size);
6f134d7b 4824
d2ed3436
DS		 4825 ret = drm_property_replace_global_blob(dev,
4826 &connector->tile_blob_ptr,
4827 strlen(tile) + 1,
4828 tile,
4829 &connector->base,
4830 dev->mode_config.tile_property);
6f134d7b
DA		 4831 return ret;
4832}
4833EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4834
c8e32cc1
DV		 4835/**
4836 * drm_mode_connector_update_edid_property - update the edid property of a connector
4837 * @connector: drm connector
4838 * @edid: new value of the edid property
4839 *
4840 * This function creates a new blob modeset object and assigns its id to the
4841 * connector's edid property.
4842 *
4843 * Returns:
1a498633 4844 * Zero on success, negative errno on failure.
c8e32cc1 4845 */
f453ba04 4846int drm_mode_connector_update_edid_property(struct drm_connector *connector,
12e6cecd 4847 const struct edid *edid)
f453ba04
DA		 4848{
4849 struct drm_device *dev = connector->dev;
d2ed3436 4850 size_t size = 0;
ecbbe59b 4851 int ret;
f453ba04 4852
4cf2b281
TW		 4853 /* ignore requests to set edid when overridden */
4854 if (connector->override_edid)
4855 return 0;
4856
d2ed3436 4857 if (edid)
e24ff467 4858 size = EDID_LENGTH * (1 + edid->extensions);
f453ba04 4859
d2ed3436
DS		 4860 ret = drm_property_replace_global_blob(dev,
4861 &connector->edid_blob_ptr,
4862 size,
4863 edid,
4864 &connector->base,
4865 dev->mode_config.edid_property);
f453ba04
DA		 4866 return ret;
4867}
4868EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4869
3843e71f
RC		 4870/* Some properties could refer to dynamic refcnt'd objects, or things that
4871 * need special locking to handle lifetime issues (ie. to ensure the prop
4872 * value doesn't become invalid part way through the property update due to
4873 * race). The value returned by reference via 'obj' should be passed back
4874 * to drm_property_change_valid_put() after the property is set (and the
4875 * object to which the property is attached has a chance to take it's own
4876 * reference).
4877 */
d34f20d6 4878bool drm_property_change_valid_get(struct drm_property *property,
3843e71f 4879 uint64_t value, struct drm_mode_object **ref)
26a34815 4880{
2ca651d1
TR		 4881 int i;
4882
26a34815
PZ		 4883 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4884 return false;
5ea22f24 4885
3843e71f
RC		 4886 *ref = NULL;
4887
5ea22f24 4888 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
26a34815
PZ		 4889 if (value < property->values[0] || value > property->values[1])
4890 return false;
4891 return true;
ebc44cf3
RC		 4892 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4893 int64_t svalue = U642I64(value);
4dfd909f 4894
ebc44cf3
RC		 4895 if (svalue < U642I64(property->values[0]) ||
4896 svalue > U642I64(property->values[1]))
4897 return false;
4898 return true;
5ea22f24 4899 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
592c20ee 4900 uint64_t valid_mask = 0;
4dfd909f 4901
49e27545
RC		 4902 for (i = 0; i < property->num_values; i++)
4903 valid_mask |= (1ULL << property->values[i]);
4904 return !(value & ~valid_mask);
5ea22f24 4905 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
6bcacf51
DS		 4906 struct drm_property_blob *blob;
4907
4908 if (value == 0)
4909 return true;
4910
4911 blob = drm_property_lookup_blob(property->dev, value);
4912 if (blob) {
4913 *ref = &blob->base;
4914 return true;
4915 } else {
4916 return false;
4917 }
98f75de4 4918 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
98f75de4
RC		 4919 /* a zero value for an object property translates to null: */
4920 if (value == 0)
4921 return true;
3843e71f 4922
1e8985a8
TV		 4923 *ref = _object_find(property->dev, value, property->values[0]);
4924 return *ref != NULL;
26a34815 4925 }
2ca651d1
TR		 4926
4927 for (i = 0; i < property->num_values; i++)
4928 if (property->values[i] == value)
4929 return true;
4930 return false;
26a34815
PZ		 4931}
4932
d34f20d6 4933void drm_property_change_valid_put(struct drm_property *property,
3843e71f
RC		 4934 struct drm_mode_object *ref)
4935{
4936 if (!ref)
4937 return;
4938
4939 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
027b3f8b 4940 drm_mode_object_unreference(ref);
da9b2a38
DS		 4941 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4942 drm_property_unreference_blob(obj_to_blob(ref));
3843e71f
RC		 4943}
4944
c8e32cc1
DV		 4945/**
4946 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4947 * @dev: DRM device
4948 * @data: ioctl data
4949 * @file_priv: DRM file info
4950 *
4951 * This function sets the current value for a connectors's property. It also
4952 * calls into a driver's ->set_property callback to update the hardware state
4953 *
4954 * Called by the user via ioctl.
4955 *
4956 * Returns:
1a498633 4957 * Zero on success, negative errno on failure.
c8e32cc1 4958 */
f453ba04
DA		 4959int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4960 void *data, struct drm_file *file_priv)
4961{
0057d8dd
PZ		 4962 struct drm_mode_connector_set_property *conn_set_prop = data;
4963 struct drm_mode_obj_set_property obj_set_prop = {
4964 .value = conn_set_prop->value,
4965 .prop_id = conn_set_prop->prop_id,
4966 .obj_id = conn_set_prop->connector_id,
4967 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4968 };
fb3b06c8 4969
0057d8dd
PZ		 4970 /* It does all the locking and checking we need */
4971 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 4972}
4973
c543188a
PZ		 4974static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4975 struct drm_property *property,
4976 uint64_t value)
4977{
4978 int ret = -EINVAL;
4979 struct drm_connector *connector = obj_to_connector(obj);
4980
4981 /* Do DPMS ourselves */
4982 if (property == connector->dev->mode_config.dpms_property) {
3558c112 4983 ret = (*connector->funcs->dpms)(connector, (int)value);
c543188a
PZ		 4984 } else if (connector->funcs->set_property)
4985 ret = connector->funcs->set_property(connector, property, value);
4986
4987 /* store the property value if successful */
4988 if (!ret)
58495563 4989 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 4990 return ret;
4991}
4992
bffd9de0
PZ		 4993static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4994 struct drm_property *property,
4995 uint64_t value)
4996{
4997 int ret = -EINVAL;
4998 struct drm_crtc *crtc = obj_to_crtc(obj);
4999
5000 if (crtc->funcs->set_property)
5001 ret = crtc->funcs->set_property(crtc, property, value);
5002 if (!ret)
5003 drm_object_property_set_value(obj, property, value);
5004
5005 return ret;
5006}
5007
3a5f87c2
TW		 5008/**
5009 * drm_mode_plane_set_obj_prop - set the value of a property
5010 * @plane: drm plane object to set property value for
5011 * @property: property to set
5012 * @value: value the property should be set to
5013 *
5014 * This functions sets a given property on a given plane object. This function
5015 * calls the driver's ->set_property callback and changes the software state of
5016 * the property if the callback succeeds.
5017 *
5018 * Returns:
5019 * Zero on success, error code on failure.
5020 */
5021int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
5022 struct drm_property *property,
5023 uint64_t value)
4d93914a
RC		 5024{
5025 int ret = -EINVAL;
3a5f87c2 5026 struct drm_mode_object *obj = &plane->base;
4d93914a
RC		 5027
5028 if (plane->funcs->set_property)
5029 ret = plane->funcs->set_property(plane, property, value);
5030 if (!ret)
5031 drm_object_property_set_value(obj, property, value);
5032
5033 return ret;
5034}
3a5f87c2 5035EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4d93914a 5036
c8e32cc1 5037/**
1a498633 5038 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
c8e32cc1
DV		 5039 * @dev: DRM device
5040 * @data: ioctl data
5041 * @file_priv: DRM file info
5042 *
5043 * This function retrieves the current value for an object's property. Compared
5044 * to the connector specific ioctl this one is extended to also work on crtc and
5045 * plane objects.
5046 *
5047 * Called by the user via ioctl.
5048 *
5049 * Returns:
1a498633 5050 * Zero on success, negative errno on failure.
c8e32cc1 5051 */
c543188a
PZ		 5052int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
5053 struct drm_file *file_priv)
5054{
5055 struct drm_mode_obj_get_properties *arg = data;
5056 struct drm_mode_object *obj;
5057 int ret = 0;
c543188a
PZ		 5058
5059 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5060 return -EINVAL;
5061
84849903 5062 drm_modeset_lock_all(dev);
c543188a
PZ		 5063
5064 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
5065 if (!obj) {
f27657f2 5066 ret = -ENOENT;
c543188a
PZ		 5067 goto out;
5068 }
5069 if (!obj->properties) {
5070 ret = -EINVAL;
1649c33b 5071 goto out_unref;
c543188a
PZ		 5072 }
5073
88a48e29 5074 ret = get_properties(obj, file_priv->atomic,
95cbf110
RC		 5075 (uint32_t __user *)(unsigned long)(arg->props_ptr),
5076 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
5077 &arg->count_props);
c543188a 5078
1649c33b
DV		 5079out_unref:
5080 drm_mode_object_unreference(obj);
c543188a 5081out:
84849903 5082 drm_modeset_unlock_all(dev);
c543188a
PZ		 5083 return ret;
5084}
5085
c8e32cc1
DV		 5086/**
5087 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
5088 * @dev: DRM device
5089 * @data: ioctl data
5090 * @file_priv: DRM file info
5091 *
5092 * This function sets the current value for an object's property. It also calls
5093 * into a driver's ->set_property callback to update the hardware state.
5094 * Compared to the connector specific ioctl this one is extended to also work on
5095 * crtc and plane objects.
5096 *
5097 * Called by the user via ioctl.
5098 *
5099 * Returns:
1a498633 5100 * Zero on success, negative errno on failure.
c8e32cc1 5101 */
c543188a
PZ		 5102int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
5103 struct drm_file *file_priv)
5104{
5105 struct drm_mode_obj_set_property *arg = data;
5106 struct drm_mode_object *arg_obj;
5107 struct drm_mode_object *prop_obj;
5108 struct drm_property *property;
3843e71f
RC		 5109 int i, ret = -EINVAL;
5110 struct drm_mode_object *ref;
c543188a
PZ		 5111
5112 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5113 return -EINVAL;
5114
84849903 5115 drm_modeset_lock_all(dev);
c543188a
PZ		 5116
5117 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 5118 if (!arg_obj) {
5119 ret = -ENOENT;
c543188a 5120 goto out;
f27657f2 5121 }
c543188a 5122 if (!arg_obj->properties)
1649c33b 5123 goto out_unref;
c543188a 5124
7f88a9be 5125 for (i = 0; i < arg_obj->properties->count; i++)
b17cd757 5126 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
c543188a
PZ		 5127 break;
5128
7f88a9be 5129 if (i == arg_obj->properties->count)
1649c33b 5130 goto out_unref;
c543188a
PZ		 5131
5132 prop_obj = drm_mode_object_find(dev, arg->prop_id,
5133 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 5134 if (!prop_obj) {
5135 ret = -ENOENT;
1649c33b 5136 goto out_unref;
f27657f2 5137 }
c543188a
PZ		 5138 property = obj_to_property(prop_obj);
5139
3843e71f 5140 if (!drm_property_change_valid_get(property, arg->value, &ref))
b164d31f 5141 goto out_unref;
c543188a
PZ		 5142
5143 switch (arg_obj->type) {
5144 case DRM_MODE_OBJECT_CONNECTOR:
5145 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
5146 arg->value);
5147 break;
bffd9de0
PZ		 5148 case DRM_MODE_OBJECT_CRTC:
5149 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
5150 break;
4d93914a 5151 case DRM_MODE_OBJECT_PLANE:
3a5f87c2
TW		 5152 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
5153 property, arg->value);
4d93914a 5154 break;
c543188a
PZ		 5155 }
5156
3843e71f
RC		 5157 drm_property_change_valid_put(property, ref);
5158
1649c33b
DV		 5159out_unref:
5160 drm_mode_object_unreference(arg_obj);
c543188a 5161out:
84849903 5162 drm_modeset_unlock_all(dev);
c543188a
PZ		 5163 return ret;
5164}
5165
c8e32cc1
DV		 5166/**
5167 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5168 * @connector: connector to attach
5169 * @encoder: encoder to attach @connector to
5170 *
5171 * This function links up a connector to an encoder. Note that the routing
5172 * restrictions between encoders and crtcs are exposed to userspace through the
5173 * possible_clones and possible_crtcs bitmasks.
5174 *
5175 * Returns:
1a498633 5176 * Zero on success, negative errno on failure.
c8e32cc1 5177 */
f453ba04
DA		 5178int drm_mode_connector_attach_encoder(struct drm_connector *connector,
5179 struct drm_encoder *encoder)
5180{
5181 int i;
5182
eb47fe80
TR		 5183 /*
5184 * In the past, drivers have attempted to model the static association
5185 * of connector to encoder in simple connector/encoder devices using a
5186 * direct assignment of connector->encoder = encoder. This connection
5187 * is a logical one and the responsibility of the core, so drivers are
5188 * expected not to mess with this.
5189 *
5190 * Note that the error return should've been enough here, but a large
5191 * majority of drivers ignores the return value, so add in a big WARN
5192 * to get people's attention.
5193 */
5194 if (WARN_ON(connector->encoder))
5195 return -EINVAL;
5196
f453ba04
DA		 5197 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5198 if (connector->encoder_ids[i] == 0) {
5199 connector->encoder_ids[i] = encoder->base.id;
5200 return 0;
5201 }
5202 }
5203 return -ENOMEM;
5204}
5205EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5206
c8e32cc1
DV		 5207/**
5208 * drm_mode_crtc_set_gamma_size - set the gamma table size
5209 * @crtc: CRTC to set the gamma table size for
5210 * @gamma_size: size of the gamma table
5211 *
5212 * Drivers which support gamma tables should set this to the supported gamma
5213 * table size when initializing the CRTC. Currently the drm core only supports a
5214 * fixed gamma table size.
5215 *
5216 * Returns:
1a498633 5217 * Zero on success, negative errno on failure.
c8e32cc1 5218 */
4cae5b84 5219int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 5220 int gamma_size)
f453ba04 5221{
cf48e292
DV		 5222 uint16_t *r_base, *g_base, *b_base;
5223 int i;
5224
f453ba04
DA		 5225 crtc->gamma_size = gamma_size;
5226
bd3f0ff9
TR		 5227 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5228 GFP_KERNEL);
f453ba04
DA		 5229 if (!crtc->gamma_store) {
5230 crtc->gamma_size = 0;
4cae5b84 5231 return -ENOMEM;
f453ba04
DA		 5232 }
5233
cf48e292
DV		 5234 r_base = crtc->gamma_store;
5235 g_base = r_base + gamma_size;
5236 b_base = g_base + gamma_size;
5237 for (i = 0; i < gamma_size; i++) {
5238 r_base[i] = i << 8;
5239 g_base[i] = i << 8;
5240 b_base[i] = i << 8;
5241 }
5242
5243
4cae5b84 5244 return 0;
f453ba04
DA		 5245}
5246EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5247
c8e32cc1
DV		 5248/**
5249 * drm_mode_gamma_set_ioctl - set the gamma table
5250 * @dev: DRM device
5251 * @data: ioctl data
5252 * @file_priv: DRM file info
5253 *
5254 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5255 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5256 *
5257 * Called by the user via ioctl.
5258 *
5259 * Returns:
1a498633 5260 * Zero on success, negative errno on failure.
c8e32cc1 5261 */
f453ba04
DA		 5262int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5263 void *data, struct drm_file *file_priv)
5264{
5265 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 5266 struct drm_crtc *crtc;
5267 void *r_base, *g_base, *b_base;
5268 int size;
5269 int ret = 0;
5270
fb3b06c8
DA		 5271 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5272 return -EINVAL;
5273
84849903 5274 drm_modeset_lock_all(dev);
a2b34e22
RC		 5275 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5276 if (!crtc) {
f27657f2 5277 ret = -ENOENT;
f453ba04
DA		 5278 goto out;
5279 }
f453ba04 5280
ebe0f244
LP		 5281 if (crtc->funcs->gamma_set == NULL) {
5282 ret = -ENOSYS;
5283 goto out;
5284 }
5285
f453ba04
DA		 5286 /* memcpy into gamma store */
5287 if (crtc_lut->gamma_size != crtc->gamma_size) {
5288 ret = -EINVAL;
5289 goto out;
5290 }
5291
5292 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5293 r_base = crtc->gamma_store;
5294 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5295 ret = -EFAULT;
5296 goto out;
5297 }
5298
5299 g_base = r_base + size;
5300 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5301 ret = -EFAULT;
5302 goto out;
5303 }
5304
5305 b_base = g_base + size;
5306 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5307 ret = -EFAULT;
5308 goto out;
5309 }
5310
7ea77283 5311 ret = crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size);
f453ba04
DA		 5312
5313out:
84849903 5314 drm_modeset_unlock_all(dev);
f453ba04
DA		 5315 return ret;
5316
5317}
5318
c8e32cc1
DV		 5319/**
5320 * drm_mode_gamma_get_ioctl - get the gamma table
5321 * @dev: DRM device
5322 * @data: ioctl data
5323 * @file_priv: DRM file info
5324 *
5325 * Copy the current gamma table into the storage provided. This also provides
5326 * the gamma table size the driver expects, which can be used to size the
5327 * allocated storage.
5328 *
5329 * Called by the user via ioctl.
5330 *
5331 * Returns:
1a498633 5332 * Zero on success, negative errno on failure.
c8e32cc1 5333 */
f453ba04
DA		 5334int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5335 void *data, struct drm_file *file_priv)
5336{
5337 struct drm_mode_crtc_lut *crtc_lut = data;
f453ba04
DA		 5338 struct drm_crtc *crtc;
5339 void *r_base, *g_base, *b_base;
5340 int size;
5341 int ret = 0;
5342
fb3b06c8
DA		 5343 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5344 return -EINVAL;
5345
84849903 5346 drm_modeset_lock_all(dev);
a2b34e22
RC		 5347 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5348 if (!crtc) {
f27657f2 5349 ret = -ENOENT;
f453ba04
DA		 5350 goto out;
5351 }
f453ba04
DA		 5352
5353 /* memcpy into gamma store */
5354 if (crtc_lut->gamma_size != crtc->gamma_size) {
5355 ret = -EINVAL;
5356 goto out;
5357 }
5358
5359 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5360 r_base = crtc->gamma_store;
5361 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5362 ret = -EFAULT;
5363 goto out;
5364 }
5365
5366 g_base = r_base + size;
5367 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5368 ret = -EFAULT;
5369 goto out;
5370 }
5371
5372 b_base = g_base + size;
5373 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5374 ret = -EFAULT;
5375 goto out;
5376 }
5377out:
84849903 5378 drm_modeset_unlock_all(dev);
f453ba04
DA		 5379 return ret;
5380}
d91d8a3f 5381
c8e32cc1
DV		 5382/**
5383 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5384 * @dev: DRM device
5385 * @data: ioctl data
5386 * @file_priv: DRM file info
5387 *
5388 * This schedules an asynchronous update on a given CRTC, called page flip.
5389 * Optionally a drm event is generated to signal the completion of the event.
5390 * Generic drivers cannot assume that a pageflip with changed framebuffer
5391 * properties (including driver specific metadata like tiling layout) will work,
5392 * but some drivers support e.g. pixel format changes through the pageflip
5393 * ioctl.
5394 *
5395 * Called by the user via ioctl.
5396 *
5397 * Returns:
1a498633 5398 * Zero on success, negative errno on failure.
c8e32cc1 5399 */
d91d8a3f
KH		 5400int drm_mode_page_flip_ioctl(struct drm_device *dev,
5401 void *data, struct drm_file *file_priv)
5402{
5403 struct drm_mode_crtc_page_flip *page_flip = data;
d91d8a3f 5404 struct drm_crtc *crtc;
3d30a59b 5405 struct drm_framebuffer *fb = NULL;
d91d8a3f 5406 struct drm_pending_vblank_event *e = NULL;
d91d8a3f
KH		 5407 int ret = -EINVAL;
5408
5409 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5410 page_flip->reserved != 0)
5411 return -EINVAL;
5412
62f2104f
KP		 5413 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5414 return -EINVAL;
5415
a2b34e22
RC		 5416 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5417 if (!crtc)
f27657f2 5418 return -ENOENT;
d91d8a3f 5419
4d02e2de 5420 drm_modeset_lock_crtc(crtc, crtc->primary);
f4510a27 5421 if (crtc->primary->fb == NULL) {
90c1efdd
CW		 5422 /* The framebuffer is currently unbound, presumably
5423 * due to a hotplug event, that userspace has not
5424 * yet discovered.
5425 */
5426 ret = -EBUSY;
5427 goto out;
5428 }
5429
d91d8a3f
KH		 5430 if (crtc->funcs->page_flip == NULL)
5431 goto out;
5432
786b99ed 5433 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 5434 if (!fb) {
5435 ret = -ENOENT;
d91d8a3f 5436 goto out;
37c4e705 5437 }
d91d8a3f 5438
2afa701d
VS		 5439 if (crtc->state) {
5440 const struct drm_plane_state *state = crtc->primary->state;
5441
5442 ret = check_src_coords(state->src_x, state->src_y,
5443 state->src_w, state->src_h, fb);
5444 } else {
5445 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5446 }
c11e9283 5447 if (ret)
5f61bb42 5448 goto out;
5f61bb42 5449
f4510a27 5450 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
909d9cda
LP		 5451 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5452 ret = -EINVAL;
5453 goto out;
5454 }
5455
d91d8a3f 5456 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
2dd500f1
DV		 5457 e = kzalloc(sizeof *e, GFP_KERNEL);
5458 if (!e) {
5459 ret = -ENOMEM;
d91d8a3f
KH		 5460 goto out;
5461 }
7bd4d7be 5462 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
f76511b9 5463 e->event.base.length = sizeof(e->event);
d91d8a3f 5464 e->event.user_data = page_flip->user_data;
2dd500f1
DV		 5465 ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
5466 if (ret) {
5467 kfree(e);
5468 goto out;
5469 }
d91d8a3f
KH		 5470 }
5471
3d30a59b 5472 crtc->primary->old_fb = crtc->primary->fb;
ed8d1975 5473 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 5474 if (ret) {
2dd500f1
DV		 5475 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
5476 drm_event_cancel_free(dev, &e->base);
b0d12325 5477 /* Keep the old fb, don't unref it. */
3d30a59b 5478 crtc->primary->old_fb = NULL;
b0d12325 5479 } else {
3cb43cc0 5480 crtc->primary->fb = fb;
b0d12325
DV		 5481 /* Unref only the old framebuffer. */
5482 fb = NULL;
d91d8a3f
KH		 5483 }
5484
5485out:
b0d12325
DV		 5486 if (fb)
5487 drm_framebuffer_unreference(fb);
3d30a59b
DV		 5488 if (crtc->primary->old_fb)
5489 drm_framebuffer_unreference(crtc->primary->old_fb);
5490 crtc->primary->old_fb = NULL;
d059f652 5491 drm_modeset_unlock_crtc(crtc);
b4d5e7d1 5492
d91d8a3f
KH		 5493 return ret;
5494}
eb033556 5495
c8e32cc1
DV		 5496/**
5497 * drm_mode_config_reset - call ->reset callbacks
5498 * @dev: drm device
5499 *
5500 * This functions calls all the crtc's, encoder's and connector's ->reset
5501 * callback. Drivers can use this in e.g. their driver load or resume code to
5502 * reset hardware and software state.
5503 */
eb033556
CW		 5504void drm_mode_config_reset(struct drm_device *dev)
5505{
5506 struct drm_crtc *crtc;
2a0d7cfd 5507 struct drm_plane *plane;
eb033556
CW		 5508 struct drm_encoder *encoder;
5509 struct drm_connector *connector;
5510
e4f62546 5511 drm_for_each_plane(plane, dev)
2a0d7cfd
DV		 5512 if (plane->funcs->reset)
5513 plane->funcs->reset(plane);
5514
e4f62546 5515 drm_for_each_crtc(crtc, dev)
eb033556
CW		 5516 if (crtc->funcs->reset)
5517 crtc->funcs->reset(crtc);
5518
e4f62546 5519 drm_for_each_encoder(encoder, dev)
eb033556
CW		 5520 if (encoder->funcs->reset)
5521 encoder->funcs->reset(encoder);
5522
f8c2ba31 5523 mutex_lock(&dev->mode_config.mutex);
4eebf60b 5524 drm_for_each_connector(connector, dev)
eb033556
CW		 5525 if (connector->funcs->reset)
5526 connector->funcs->reset(connector);
f8c2ba31 5527 mutex_unlock(&dev->mode_config.mutex);
eb033556
CW		 5528}
5529EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 5530
c8e32cc1
DV		 5531/**
5532 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5533 * @dev: DRM device
5534 * @data: ioctl data
5535 * @file_priv: DRM file info
5536 *
5537 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5538 * TTM or something else entirely) and returns the resulting buffer handle. This
5539 * handle can then be wrapped up into a framebuffer modeset object.
5540 *
5541 * Note that userspace is not allowed to use such objects for render
5542 * acceleration - drivers must create their own private ioctls for such a use
5543 * case.
5544 *
5545 * Called by the user via ioctl.
5546 *
5547 * Returns:
1a498633 5548 * Zero on success, negative errno on failure.
c8e32cc1 5549 */
ff72145b
DA		 5550int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5551 void *data, struct drm_file *file_priv)
5552{
5553 struct drm_mode_create_dumb *args = data;
b28cd41f 5554 u32 cpp, stride, size;
ff72145b
DA		 5555
5556 if (!dev->driver->dumb_create)
5557 return -ENOSYS;
b28cd41f
DH		 5558 if (!args->width || !args->height || !args->bpp)
5559 return -EINVAL;
5560
5561 /* overflow checks for 32bit size calculations */
00e72089 5562 /* NOTE: DIV_ROUND_UP() can overflow */
b28cd41f 5563 cpp = DIV_ROUND_UP(args->bpp, 8);
00e72089 5564 if (!cpp || cpp > 0xffffffffU / args->width)
b28cd41f
DH		 5565 return -EINVAL;
5566 stride = cpp * args->width;
5567 if (args->height > 0xffffffffU / stride)
5568 return -EINVAL;
5569
5570 /* test for wrap-around */
5571 size = args->height * stride;
5572 if (PAGE_ALIGN(size) == 0)
5573 return -EINVAL;
5574
f6085952
TR		 5575 /*
5576 * handle, pitch and size are output parameters. Zero them out to
5577 * prevent drivers from accidentally using uninitialized data. Since
5578 * not all existing userspace is clearing these fields properly we
5579 * cannot reject IOCTL with garbage in them.
5580 */
5581 args->handle = 0;
5582 args->pitch = 0;
5583 args->size = 0;
5584
ff72145b
DA		 5585 return dev->driver->dumb_create(file_priv, dev, args);
5586}
5587
c8e32cc1
DV		 5588/**
5589 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5590 * @dev: DRM device
5591 * @data: ioctl data
5592 * @file_priv: DRM file info
5593 *
5594 * Allocate an offset in the drm device node's address space to be able to
5595 * memory map a dumb buffer.
5596 *
5597 * Called by the user via ioctl.
5598 *
5599 * Returns:
1a498633 5600 * Zero on success, negative errno on failure.
c8e32cc1 5601 */
ff72145b
DA		 5602int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5603 void *data, struct drm_file *file_priv)
5604{
5605 struct drm_mode_map_dumb *args = data;
5606
5607 /* call driver ioctl to get mmap offset */
5608 if (!dev->driver->dumb_map_offset)
5609 return -ENOSYS;
5610
5611 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5612}
5613
c8e32cc1
DV		 5614/**
5615 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5616 * @dev: DRM device
5617 * @data: ioctl data
5618 * @file_priv: DRM file info
5619 *
5620 * This destroys the userspace handle for the given dumb backing storage buffer.
5621 * Since buffer objects must be reference counted in the kernel a buffer object
5622 * won't be immediately freed if a framebuffer modeset object still uses it.
5623 *
5624 * Called by the user via ioctl.
5625 *
5626 * Returns:
1a498633 5627 * Zero on success, negative errno on failure.
c8e32cc1 5628 */
ff72145b
DA		 5629int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5630 void *data, struct drm_file *file_priv)
5631{
5632 struct drm_mode_destroy_dumb *args = data;
5633
5634 if (!dev->driver->dumb_destroy)
5635 return -ENOSYS;
5636
5637 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5638}
248dbc23 5639
3c9855f6
VS		 5640/**
5641 * drm_rotation_simplify() - Try to simplify the rotation
5642 * @rotation: Rotation to be simplified
5643 * @supported_rotations: Supported rotations
5644 *
5645 * Attempt to simplify the rotation to a form that is supported.
5646 * Eg. if the hardware supports everything except DRM_REFLECT_X
5647 * one could call this function like this:
5648 *
5649 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5650 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5651 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5652 *
5653 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5654 * transforms the hardware supports, this function may not
5655 * be able to produce a supported transform, so the caller should
5656 * check the result afterwards.
5657 */
5658unsigned int drm_rotation_simplify(unsigned int rotation,
5659 unsigned int supported_rotations)
5660{
5661 if (rotation & ~supported_rotations) {
5662 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
14152c8d
JL		 5663 rotation = (rotation & DRM_REFLECT_MASK) |
5664 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
3c9855f6
VS		 5665 }
5666
5667 return rotation;
5668}
5669EXPORT_SYMBOL(drm_rotation_simplify);
5670
87d24fc3
LP		 5671/**
5672 * drm_mode_config_init - initialize DRM mode_configuration structure
5673 * @dev: DRM device
5674 *
5675 * Initialize @dev's mode_config structure, used for tracking the graphics
5676 * configuration of @dev.
5677 *
5678 * Since this initializes the modeset locks, no locking is possible. Which is no
5679 * problem, since this should happen single threaded at init time. It is the
5680 * driver's problem to ensure this guarantee.
5681 *
5682 */
5683void drm_mode_config_init(struct drm_device *dev)
5684{
5685 mutex_init(&dev->mode_config.mutex);
51fd371b 5686 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5687 mutex_init(&dev->mode_config.idr_mutex);
5688 mutex_init(&dev->mode_config.fb_lock);
8fb6e7a5 5689 mutex_init(&dev->mode_config.blob_lock);
87d24fc3
LP		 5690 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5691 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5692 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5693 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5694 INIT_LIST_HEAD(&dev->mode_config.property_list);
5695 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5696 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5697 idr_init(&dev->mode_config.crtc_idr);
138f9ebb 5698 idr_init(&dev->mode_config.tile_idr);
5fff80bb 5699 ida_init(&dev->mode_config.connector_ida);
87d24fc3
LP		 5700
5701 drm_modeset_lock_all(dev);
6b4959f4 5702 drm_mode_create_standard_properties(dev);
87d24fc3
LP		 5703 drm_modeset_unlock_all(dev);
5704
5705 /* Just to be sure */
5706 dev->mode_config.num_fb = 0;
5707 dev->mode_config.num_connector = 0;
5708 dev->mode_config.num_crtc = 0;
5709 dev->mode_config.num_encoder = 0;
e27dde3e
MR		 5710 dev->mode_config.num_overlay_plane = 0;
5711 dev->mode_config.num_total_plane = 0;
87d24fc3
LP		 5712}
5713EXPORT_SYMBOL(drm_mode_config_init);
5714
5715/**
5716 * drm_mode_config_cleanup - free up DRM mode_config info
5717 * @dev: DRM device
5718 *
5719 * Free up all the connectors and CRTCs associated with this DRM device, then
5720 * free up the framebuffers and associated buffer objects.
5721 *
5722 * Note that since this /should/ happen single-threaded at driver/device
5723 * teardown time, no locking is required. It's the driver's job to ensure that
5724 * this guarantee actually holds true.
5725 *
5726 * FIXME: cleanup any dangling user buffer objects too
5727 */
5728void drm_mode_config_cleanup(struct drm_device *dev)
5729{
5730 struct drm_connector *connector, *ot;
5731 struct drm_crtc *crtc, *ct;
5732 struct drm_encoder *encoder, *enct;
5733 struct drm_framebuffer *fb, *fbt;
5734 struct drm_property *property, *pt;
5735 struct drm_property_blob *blob, *bt;
5736 struct drm_plane *plane, *plt;
5737
5738 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5739 head) {
5740 encoder->funcs->destroy(encoder);
5741 }
5742
5743 list_for_each_entry_safe(connector, ot,
5744 &dev->mode_config.connector_list, head) {
5745 connector->funcs->destroy(connector);
5746 }
5747
5748 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5749 head) {
5750 drm_property_destroy(dev, property);
5751 }
5752
f35034f8
ML		 5753 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5754 head) {
5755 plane->funcs->destroy(plane);
5756 }
5757
5758 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5759 crtc->funcs->destroy(crtc);
5760 }
5761
87d24fc3 5762 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
e2f5d2ea 5763 head_global) {
6bcacf51 5764 drm_property_unreference_blob(blob);
87d24fc3
LP		 5765 }
5766
5767 /*
5768 * Single-threaded teardown context, so it's not required to grab the
5769 * fb_lock to protect against concurrent fb_list access. Contrary, it
5770 * would actually deadlock with the drm_framebuffer_cleanup function.
5771 *
5772 * Also, if there are any framebuffers left, that's a driver leak now,
5773 * so politely WARN about this.
5774 */
5775 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5776 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
d0f37cf6 5777 drm_framebuffer_free(&fb->base.refcount);
87d24fc3
LP		 5778 }
5779
5fff80bb 5780 ida_destroy(&dev->mode_config.connector_ida);
138f9ebb 5781 idr_destroy(&dev->mode_config.tile_idr);
87d24fc3 5782 idr_destroy(&dev->mode_config.crtc_idr);
51fd371b 5783 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
87d24fc3
LP		 5784}
5785EXPORT_SYMBOL(drm_mode_config_cleanup);
c1df5f3c
VS		 5786
5787struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5788 unsigned int supported_rotations)
5789{
5790 static const struct drm_prop_enum_list props[] = {
5791 { DRM_ROTATE_0, "rotate-0" },
5792 { DRM_ROTATE_90, "rotate-90" },
5793 { DRM_ROTATE_180, "rotate-180" },
5794 { DRM_ROTATE_270, "rotate-270" },
5795 { DRM_REFLECT_X, "reflect-x" },
5796 { DRM_REFLECT_Y, "reflect-y" },
5797 };
5798
5799 return drm_property_create_bitmask(dev, 0, "rotation",
5800 props, ARRAY_SIZE(props),
5801 supported_rotations);
5802}
5803EXPORT_SYMBOL(drm_mode_create_rotation_property);
138f9ebb
DA		 5804
5805/**
5806 * DOC: Tile group
5807 *
5808 * Tile groups are used to represent tiled monitors with a unique
5809 * integer identifier. Tiled monitors using DisplayID v1.3 have
5810 * a unique 8-byte handle, we store this in a tile group, so we
5811 * have a common identifier for all tiles in a monitor group.
5812 */
5813static void drm_tile_group_free(struct kref *kref)
5814{
5815 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5816 struct drm_device *dev = tg->dev;
5817 mutex_lock(&dev->mode_config.idr_mutex);
5818 idr_remove(&dev->mode_config.tile_idr, tg->id);
5819 mutex_unlock(&dev->mode_config.idr_mutex);
5820 kfree(tg);
5821}
5822
5823/**
5824 * drm_mode_put_tile_group - drop a reference to a tile group.
5825 * @dev: DRM device
5826 * @tg: tile group to drop reference to.
5827 *
5828 * drop reference to tile group and free if 0.
5829 */
5830void drm_mode_put_tile_group(struct drm_device *dev,
5831 struct drm_tile_group *tg)
5832{
5833 kref_put(&tg->refcount, drm_tile_group_free);
5834}
5835
5836/**
5837 * drm_mode_get_tile_group - get a reference to an existing tile group
5838 * @dev: DRM device
5839 * @topology: 8-bytes unique per monitor.
5840 *
5841 * Use the unique bytes to get a reference to an existing tile group.
5842 *
5843 * RETURNS:
5844 * tile group or NULL if not found.
5845 */
5846struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5847 char topology[8])
5848{
5849 struct drm_tile_group *tg;
5850 int id;
5851 mutex_lock(&dev->mode_config.idr_mutex);
5852 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5853 if (!memcmp(tg->group_data, topology, 8)) {
5854 if (!kref_get_unless_zero(&tg->refcount))
5855 tg = NULL;
5856 mutex_unlock(&dev->mode_config.idr_mutex);
5857 return tg;
5858 }
5859 }
5860 mutex_unlock(&dev->mode_config.idr_mutex);
5861 return NULL;
5862}
81ddd1bc 5863EXPORT_SYMBOL(drm_mode_get_tile_group);
138f9ebb
DA		 5864
5865/**
5866 * drm_mode_create_tile_group - create a tile group from a displayid description
5867 * @dev: DRM device
5868 * @topology: 8-bytes unique per monitor.
5869 *
5870 * Create a tile group for the unique monitor, and get a unique
5871 * identifier for the tile group.
5872 *
5873 * RETURNS:
5874 * new tile group or error.
5875 */
5876struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5877 char topology[8])
5878{
5879 struct drm_tile_group *tg;
5880 int ret;
5881
5882 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5883 if (!tg)
5884 return ERR_PTR(-ENOMEM);
5885
5886 kref_init(&tg->refcount);
5887 memcpy(tg->group_data, topology, 8);
5888 tg->dev = dev;
5889
5890 mutex_lock(&dev->mode_config.idr_mutex);
5891 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5892 if (ret >= 0) {
5893 tg->id = ret;
5894 } else {
5895 kfree(tg);
5896 tg = ERR_PTR(ret);
5897 }
5898
5899 mutex_unlock(&dev->mode_config.idr_mutex);
5900 return tg;
5901}
81ddd1bc 5902EXPORT_SYMBOL(drm_mode_create_tile_group);
f8ed34ac
JS		 5903
5904/**
5905 * drm_crtc_enable_color_mgmt - enable color management properties
5906 * @crtc: DRM CRTC
5907 * @degamma_lut_size: the size of the degamma lut (before CSC)
5908 * @has_ctm: whether to attach ctm_property for CSC matrix
5909 * @gamma_lut_size: the size of the gamma lut (after CSC)
5910 *
5911 * This function lets the driver enable the color correction
5912 * properties on a CRTC. This includes 3 degamma, csc and gamma
5913 * properties that userspace can set and 2 size properties to inform
5914 * the userspace of the lut sizes. Each of the properties are
5915 * optional. The gamma and degamma properties are only attached if
5916 * their size is not 0 and ctm_property is only attached if has_ctm is
5917 * true.
5918 */
5919void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc,
5920 uint degamma_lut_size,
5921 bool has_ctm,
5922 uint gamma_lut_size)
5923{
5924 struct drm_device *dev = crtc->dev;
5925 struct drm_mode_config *config = &dev->mode_config;
5926
5927 if (degamma_lut_size) {
5928 drm_object_attach_property(&crtc->base,
5929 config->degamma_lut_property, 0);
5930 drm_object_attach_property(&crtc->base,
5931 config->degamma_lut_size_property,
5932 degamma_lut_size);
5933 }
5934
5935 if (has_ctm)
5936 drm_object_attach_property(&crtc->base,
5937 config->ctm_property, 0);
5938
5939 if (gamma_lut_size) {
5940 drm_object_attach_property(&crtc->base,
5941 config->gamma_lut_property, 0);
5942 drm_object_attach_property(&crtc->base,
5943 config->gamma_lut_size_property,
5944 gamma_lut_size);
5945 }
5946}
5947EXPORT_SYMBOL(drm_crtc_enable_color_mgmt);
Linux kernel - Deliverables
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