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drm: Don't initialize local ret variable when not needed
[GitHub/mt8127/android_kernel_alcatel_ttab.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 */
32#include <linux/list.h>
5a0e3ad6 33#include <linux/slab.h>
2d1a8a48 34#include <linux/export.h>
f453ba04
DA		 35#include "drm.h"
36#include "drmP.h"
37#include "drm_crtc.h"
7466f4cc 38#include "drm_edid.h"
308e5bcb 39#include "drm_fourcc.h"
f453ba04 40
f453ba04
DA		 41/* Avoid boilerplate. I'm tired of typing. */
42#define DRM_ENUM_NAME_FN(fnname, list) \
43 char *fnname(int val) \
44 { \
45 int i; \
46 for (i = 0; i < ARRAY_SIZE(list); i++) { \
47 if (list[i].type == val) \
48 return list[i].name; \
49 } \
50 return "(unknown)"; \
51 }
52
53/*
54 * Global properties
55 */
56static struct drm_prop_enum_list drm_dpms_enum_list[] =
57{ { DRM_MODE_DPMS_ON, "On" },
58 { DRM_MODE_DPMS_STANDBY, "Standby" },
59 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
60 { DRM_MODE_DPMS_OFF, "Off" }
61};
62
63DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
64
65/*
66 * Optional properties
67 */
68static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
69{
53bd8389
JB		 70 { DRM_MODE_SCALE_NONE, "None" },
71 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
72 { DRM_MODE_SCALE_CENTER, "Center" },
73 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 74};
75
76static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
77{
78 { DRM_MODE_DITHERING_OFF, "Off" },
79 { DRM_MODE_DITHERING_ON, "On" },
92897b5c 80 { DRM_MODE_DITHERING_AUTO, "Automatic" },
f453ba04
DA		 81};
82
83/*
84 * Non-global properties, but "required" for certain connectors.
85 */
86static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
87{
88 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
89 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
90 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
91};
92
93DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
94
95static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
96{
97 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
98 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
99 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
100};
101
102DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
103 drm_dvi_i_subconnector_enum_list)
104
105static struct drm_prop_enum_list drm_tv_select_enum_list[] =
106{
107 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
108 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
109 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
110 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 111 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 112};
113
114DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
115
116static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
117{
118 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 123};
124
125DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
126 drm_tv_subconnector_enum_list)
127
884840aa
JB		 128static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
129 { DRM_MODE_DIRTY_OFF, "Off" },
130 { DRM_MODE_DIRTY_ON, "On" },
131 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
132};
133
134DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
135 drm_dirty_info_enum_list)
136
f453ba04
DA		 137struct drm_conn_prop_enum_list {
138 int type;
139 char *name;
140 int count;
141};
142
143/*
144 * Connector and encoder types.
145 */
146static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
147{ { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
148 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
149 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
150 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
151 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
152 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
153 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
154 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
155 { DRM_MODE_CONNECTOR_Component, "Component", 0 },
e76116ca
AD		 156 { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
157 { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
158 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
159 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
74bd3c26 160 { DRM_MODE_CONNECTOR_TV, "TV", 0 },
e76116ca 161 { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
a7331e5c 162 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0},
f453ba04
DA		 163};
164
165static struct drm_prop_enum_list drm_encoder_enum_list[] =
166{ { DRM_MODE_ENCODER_NONE, "None" },
167 { DRM_MODE_ENCODER_DAC, "DAC" },
168 { DRM_MODE_ENCODER_TMDS, "TMDS" },
169 { DRM_MODE_ENCODER_LVDS, "LVDS" },
170 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 171 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
f453ba04
DA		 172};
173
174char *drm_get_encoder_name(struct drm_encoder *encoder)
175{
176 static char buf[32];
177
178 snprintf(buf, 32, "%s-%d",
179 drm_encoder_enum_list[encoder->encoder_type].name,
180 encoder->base.id);
181 return buf;
182}
13a8195b 183EXPORT_SYMBOL(drm_get_encoder_name);
f453ba04
DA		 184
185char *drm_get_connector_name(struct drm_connector *connector)
186{
187 static char buf[32];
188
189 snprintf(buf, 32, "%s-%d",
190 drm_connector_enum_list[connector->connector_type].name,
191 connector->connector_type_id);
192 return buf;
193}
194EXPORT_SYMBOL(drm_get_connector_name);
195
196char *drm_get_connector_status_name(enum drm_connector_status status)
197{
198 if (status == connector_status_connected)
199 return "connected";
200 else if (status == connector_status_disconnected)
201 return "disconnected";
202 else
203 return "unknown";
204}
205
206/**
207 * drm_mode_object_get - allocate a new identifier
208 * @dev: DRM device
209 * @ptr: object pointer, used to generate unique ID
210 * @type: object type
211 *
212 * LOCKING:
f453ba04
DA		 213 *
214 * Create a unique identifier based on @ptr in @dev's identifier space. Used
215 * for tracking modes, CRTCs and connectors.
216 *
217 * RETURNS:
218 * New unique (relative to other objects in @dev) integer identifier for the
219 * object.
220 */
221static int drm_mode_object_get(struct drm_device *dev,
222 struct drm_mode_object *obj, uint32_t obj_type)
223{
224 int new_id = 0;
225 int ret;
226
f453ba04
DA		 227again:
228 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
229 DRM_ERROR("Ran out memory getting a mode number\n");
f1ae126c 230 return -ENOMEM;
f453ba04
DA		 231 }
232
ad2563c2 233 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 234 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
ad2563c2 235 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 236 if (ret == -EAGAIN)
237 goto again;
f1ae126c
VS		 238 else if (ret)
239 return ret;
f453ba04
DA		 240
241 obj->id = new_id;
242 obj->type = obj_type;
243 return 0;
244}
245
246/**
247 * drm_mode_object_put - free an identifer
248 * @dev: DRM device
249 * @id: ID to free
250 *
251 * LOCKING:
252 * Caller must hold DRM mode_config lock.
253 *
254 * Free @id from @dev's unique identifier pool.
255 */
256static void drm_mode_object_put(struct drm_device *dev,
257 struct drm_mode_object *object)
258{
ad2563c2 259 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 260 idr_remove(&dev->mode_config.crtc_idr, object->id);
ad2563c2 261 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 262}
263
7a9c9060
DV		 264struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
265 uint32_t id, uint32_t type)
f453ba04 266{
ad2563c2 267 struct drm_mode_object *obj = NULL;
f453ba04 268
ad2563c2 269 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04
DA		 270 obj = idr_find(&dev->mode_config.crtc_idr, id);
271 if (!obj || (obj->type != type) || (obj->id != id))
ad2563c2
JB		 272 obj = NULL;
273 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 274
275 return obj;
276}
277EXPORT_SYMBOL(drm_mode_object_find);
278
f453ba04
DA		 279/**
280 * drm_framebuffer_init - initialize a framebuffer
281 * @dev: DRM device
282 *
283 * LOCKING:
284 * Caller must hold mode config lock.
285 *
286 * Allocates an ID for the framebuffer's parent mode object, sets its mode
287 * functions & device file and adds it to the master fd list.
288 *
289 * RETURNS:
af901ca1 290 * Zero on success, error code on failure.
f453ba04
DA		 291 */
292int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
293 const struct drm_framebuffer_funcs *funcs)
294{
295 int ret;
296
297 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
6bfc56aa 298 if (ret)
f453ba04 299 return ret;
f453ba04
DA		 300
301 fb->dev = dev;
302 fb->funcs = funcs;
303 dev->mode_config.num_fb++;
304 list_add(&fb->head, &dev->mode_config.fb_list);
305
306 return 0;
307}
308EXPORT_SYMBOL(drm_framebuffer_init);
309
310/**
311 * drm_framebuffer_cleanup - remove a framebuffer object
312 * @fb: framebuffer to remove
313 *
314 * LOCKING:
315 * Caller must hold mode config lock.
316 *
317 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
318 * it, setting it to NULL.
319 */
320void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
321{
322 struct drm_device *dev = fb->dev;
323 struct drm_crtc *crtc;
8cf5c917 324 struct drm_plane *plane;
5ef5f72f
DA		 325 struct drm_mode_set set;
326 int ret;
f453ba04
DA		 327
328 /* remove from any CRTC */
329 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
5ef5f72f
DA		 330 if (crtc->fb == fb) {
331 /* should turn off the crtc */
332 memset(&set, 0, sizeof(struct drm_mode_set));
333 set.crtc = crtc;
334 set.fb = NULL;
335 ret = crtc->funcs->set_config(&set);
336 if (ret)
337 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
338 }
f453ba04
DA		 339 }
340
8cf5c917
JB		 341 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
342 if (plane->fb == fb) {
343 /* should turn off the crtc */
344 ret = plane->funcs->disable_plane(plane);
345 if (ret)
346 DRM_ERROR("failed to disable plane with busy fb\n");
a9971157
RC		 347 /* disconnect the plane from the fb and crtc: */
348 plane->fb = NULL;
349 plane->crtc = NULL;
8cf5c917
JB		 350 }
351 }
352
f453ba04
DA		 353 drm_mode_object_put(dev, &fb->base);
354 list_del(&fb->head);
355 dev->mode_config.num_fb--;
356}
357EXPORT_SYMBOL(drm_framebuffer_cleanup);
358
359/**
360 * drm_crtc_init - Initialise a new CRTC object
361 * @dev: DRM device
362 * @crtc: CRTC object to init
363 * @funcs: callbacks for the new CRTC
364 *
365 * LOCKING:
366 * Caller must hold mode config lock.
367 *
368 * Inits a new object created as base part of an driver crtc object.
6bfc56aa
VS		 369 *
370 * RETURNS:
371 * Zero on success, error code on failure.
f453ba04 372 */
6bfc56aa 373int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
f453ba04
DA		 374 const struct drm_crtc_funcs *funcs)
375{
6bfc56aa
VS		 376 int ret;
377
f453ba04
DA		 378 crtc->dev = dev;
379 crtc->funcs = funcs;
380
381 mutex_lock(&dev->mode_config.mutex);
6bfc56aa
VS		 382
383 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
384 if (ret)
385 goto out;
f453ba04 386
bffd9de0
PZ		 387 crtc->base.properties = &crtc->properties;
388
f453ba04
DA		 389 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
390 dev->mode_config.num_crtc++;
6bfc56aa
VS		 391
392 out:
f453ba04 393 mutex_unlock(&dev->mode_config.mutex);
6bfc56aa
VS		 394
395 return ret;
f453ba04
DA		 396}
397EXPORT_SYMBOL(drm_crtc_init);
398
399/**
400 * drm_crtc_cleanup - Cleans up the core crtc usage.
401 * @crtc: CRTC to cleanup
402 *
403 * LOCKING:
404 * Caller must hold mode config lock.
405 *
406 * Cleanup @crtc. Removes from drm modesetting space
407 * does NOT free object, caller does that.
408 */
409void drm_crtc_cleanup(struct drm_crtc *crtc)
410{
411 struct drm_device *dev = crtc->dev;
412
413 if (crtc->gamma_store) {
414 kfree(crtc->gamma_store);
415 crtc->gamma_store = NULL;
416 }
417
418 drm_mode_object_put(dev, &crtc->base);
419 list_del(&crtc->head);
420 dev->mode_config.num_crtc--;
421}
422EXPORT_SYMBOL(drm_crtc_cleanup);
423
424/**
425 * drm_mode_probed_add - add a mode to a connector's probed mode list
426 * @connector: connector the new mode
427 * @mode: mode data
428 *
429 * LOCKING:
430 * Caller must hold mode config lock.
431 *
432 * Add @mode to @connector's mode list for later use.
433 */
434void drm_mode_probed_add(struct drm_connector *connector,
435 struct drm_display_mode *mode)
436{
437 list_add(&mode->head, &connector->probed_modes);
438}
439EXPORT_SYMBOL(drm_mode_probed_add);
440
441/**
442 * drm_mode_remove - remove and free a mode
443 * @connector: connector list to modify
444 * @mode: mode to remove
445 *
446 * LOCKING:
447 * Caller must hold mode config lock.
448 *
449 * Remove @mode from @connector's mode list, then free it.
450 */
451void drm_mode_remove(struct drm_connector *connector,
452 struct drm_display_mode *mode)
453{
454 list_del(&mode->head);
554f1d78 455 drm_mode_destroy(connector->dev, mode);
f453ba04
DA		 456}
457EXPORT_SYMBOL(drm_mode_remove);
458
459/**
460 * drm_connector_init - Init a preallocated connector
461 * @dev: DRM device
462 * @connector: the connector to init
463 * @funcs: callbacks for this connector
464 * @name: user visible name of the connector
465 *
466 * LOCKING:
b20f3867 467 * Takes mode config lock.
f453ba04
DA		 468 *
469 * Initialises a preallocated connector. Connectors should be
470 * subclassed as part of driver connector objects.
6bfc56aa
VS		 471 *
472 * RETURNS:
473 * Zero on success, error code on failure.
f453ba04 474 */
6bfc56aa
VS		 475int drm_connector_init(struct drm_device *dev,
476 struct drm_connector *connector,
477 const struct drm_connector_funcs *funcs,
478 int connector_type)
f453ba04 479{
6bfc56aa
VS		 480 int ret;
481
f453ba04
DA		 482 mutex_lock(&dev->mode_config.mutex);
483
6bfc56aa
VS		 484 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
485 if (ret)
486 goto out;
487
7e3bdf4a 488 connector->base.properties = &connector->properties;
f453ba04
DA		 489 connector->dev = dev;
490 connector->funcs = funcs;
f453ba04
DA		 491 connector->connector_type = connector_type;
492 connector->connector_type_id =
493 ++drm_connector_enum_list[connector_type].count; /* TODO */
494 INIT_LIST_HEAD(&connector->user_modes);
495 INIT_LIST_HEAD(&connector->probed_modes);
496 INIT_LIST_HEAD(&connector->modes);
497 connector->edid_blob_ptr = NULL;
498
499 list_add_tail(&connector->head, &dev->mode_config.connector_list);
500 dev->mode_config.num_connector++;
501
a7331e5c
TH		 502 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
503 drm_connector_attach_property(connector,
504 dev->mode_config.edid_property,
505 0);
f453ba04
DA		 506
507 drm_connector_attach_property(connector,
508 dev->mode_config.dpms_property, 0);
509
6bfc56aa 510 out:
f453ba04 511 mutex_unlock(&dev->mode_config.mutex);
6bfc56aa
VS		 512
513 return ret;
f453ba04
DA		 514}
515EXPORT_SYMBOL(drm_connector_init);
516
517/**
518 * drm_connector_cleanup - cleans up an initialised connector
519 * @connector: connector to cleanup
520 *
521 * LOCKING:
b20f3867 522 * Takes mode config lock.
f453ba04
DA		 523 *
524 * Cleans up the connector but doesn't free the object.
525 */
526void drm_connector_cleanup(struct drm_connector *connector)
527{
528 struct drm_device *dev = connector->dev;
529 struct drm_display_mode *mode, *t;
530
531 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
532 drm_mode_remove(connector, mode);
533
534 list_for_each_entry_safe(mode, t, &connector->modes, head)
535 drm_mode_remove(connector, mode);
536
537 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
538 drm_mode_remove(connector, mode);
539
540 mutex_lock(&dev->mode_config.mutex);
541 drm_mode_object_put(dev, &connector->base);
542 list_del(&connector->head);
6380c509 543 dev->mode_config.num_connector--;
f453ba04
DA		 544 mutex_unlock(&dev->mode_config.mutex);
545}
546EXPORT_SYMBOL(drm_connector_cleanup);
547
cbc7e221
DA		 548void drm_connector_unplug_all(struct drm_device *dev)
549{
550 struct drm_connector *connector;
551
552 /* taking the mode config mutex ends up in a clash with sysfs */
553 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
554 drm_sysfs_connector_remove(connector);
555
556}
557EXPORT_SYMBOL(drm_connector_unplug_all);
558
6bfc56aa 559int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 560 struct drm_encoder *encoder,
561 const struct drm_encoder_funcs *funcs,
562 int encoder_type)
f453ba04 563{
6bfc56aa
VS		 564 int ret;
565
f453ba04
DA		 566 mutex_lock(&dev->mode_config.mutex);
567
6bfc56aa
VS		 568 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
569 if (ret)
570 goto out;
f453ba04 571
6bfc56aa 572 encoder->dev = dev;
f453ba04
DA		 573 encoder->encoder_type = encoder_type;
574 encoder->funcs = funcs;
575
576 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
577 dev->mode_config.num_encoder++;
578
6bfc56aa 579 out:
f453ba04 580 mutex_unlock(&dev->mode_config.mutex);
6bfc56aa
VS		 581
582 return ret;
f453ba04
DA		 583}
584EXPORT_SYMBOL(drm_encoder_init);
585
586void drm_encoder_cleanup(struct drm_encoder *encoder)
587{
588 struct drm_device *dev = encoder->dev;
589 mutex_lock(&dev->mode_config.mutex);
590 drm_mode_object_put(dev, &encoder->base);
591 list_del(&encoder->head);
6380c509 592 dev->mode_config.num_encoder--;
f453ba04
DA		 593 mutex_unlock(&dev->mode_config.mutex);
594}
595EXPORT_SYMBOL(drm_encoder_cleanup);
596
8cf5c917
JB		 597int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
598 unsigned long possible_crtcs,
599 const struct drm_plane_funcs *funcs,
0a7eb243
RC		 600 const uint32_t *formats, uint32_t format_count,
601 bool priv)
8cf5c917 602{
6bfc56aa
VS		 603 int ret;
604
8cf5c917
JB		 605 mutex_lock(&dev->mode_config.mutex);
606
6bfc56aa
VS		 607 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
608 if (ret)
609 goto out;
610
8cf5c917 611 plane->dev = dev;
8cf5c917
JB		 612 plane->funcs = funcs;
613 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
614 GFP_KERNEL);
615 if (!plane->format_types) {
616 DRM_DEBUG_KMS("out of memory when allocating plane\n");
617 drm_mode_object_put(dev, &plane->base);
6bfc56aa
VS		 618 ret = -ENOMEM;
619 goto out;
8cf5c917
JB		 620 }
621
308e5bcb 622 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 623 plane->format_count = format_count;
624 plane->possible_crtcs = possible_crtcs;
625
0a7eb243
RC		 626 /* private planes are not exposed to userspace, but depending on
627 * display hardware, might be convenient to allow sharing programming
628 * for the scanout engine with the crtc implementation.
629 */
630 if (!priv) {
631 list_add_tail(&plane->head, &dev->mode_config.plane_list);
632 dev->mode_config.num_plane++;
633 } else {
634 INIT_LIST_HEAD(&plane->head);
635 }
8cf5c917 636
6bfc56aa 637 out:
8cf5c917
JB		 638 mutex_unlock(&dev->mode_config.mutex);
639
6bfc56aa 640 return ret;
8cf5c917
JB		 641}
642EXPORT_SYMBOL(drm_plane_init);
643
644void drm_plane_cleanup(struct drm_plane *plane)
645{
646 struct drm_device *dev = plane->dev;
647
648 mutex_lock(&dev->mode_config.mutex);
649 kfree(plane->format_types);
650 drm_mode_object_put(dev, &plane->base);
0a7eb243
RC		 651 /* if not added to a list, it must be a private plane */
652 if (!list_empty(&plane->head)) {
653 list_del(&plane->head);
654 dev->mode_config.num_plane--;
655 }
8cf5c917
JB		 656 mutex_unlock(&dev->mode_config.mutex);
657}
658EXPORT_SYMBOL(drm_plane_cleanup);
659
f453ba04
DA		 660/**
661 * drm_mode_create - create a new display mode
662 * @dev: DRM device
663 *
664 * LOCKING:
665 * Caller must hold DRM mode_config lock.
666 *
667 * Create a new drm_display_mode, give it an ID, and return it.
668 *
669 * RETURNS:
670 * Pointer to new mode on success, NULL on error.
671 */
672struct drm_display_mode *drm_mode_create(struct drm_device *dev)
673{
674 struct drm_display_mode *nmode;
675
676 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
677 if (!nmode)
678 return NULL;
679
6bfc56aa
VS		 680 if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) {
681 kfree(nmode);
682 return NULL;
683 }
684
f453ba04
DA		 685 return nmode;
686}
687EXPORT_SYMBOL(drm_mode_create);
688
689/**
690 * drm_mode_destroy - remove a mode
691 * @dev: DRM device
692 * @mode: mode to remove
693 *
694 * LOCKING:
695 * Caller must hold mode config lock.
696 *
697 * Free @mode's unique identifier, then free it.
698 */
699void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
700{
ee34ab5b
VS		 701 if (!mode)
702 return;
703
f453ba04
DA		 704 drm_mode_object_put(dev, &mode->base);
705
706 kfree(mode);
707}
708EXPORT_SYMBOL(drm_mode_destroy);
709
710static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
711{
712 struct drm_property *edid;
713 struct drm_property *dpms;
f453ba04
DA		 714
715 /*
716 * Standard properties (apply to all connectors)
717 */
718 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
719 DRM_MODE_PROP_IMMUTABLE,
720 "EDID", 0);
721 dev->mode_config.edid_property = edid;
722
4a67d391
SH		 723 dpms = drm_property_create_enum(dev, 0,
724 "DPMS", drm_dpms_enum_list,
725 ARRAY_SIZE(drm_dpms_enum_list));
f453ba04
DA		 726 dev->mode_config.dpms_property = dpms;
727
728 return 0;
729}
730
731/**
732 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
733 * @dev: DRM device
734 *
735 * Called by a driver the first time a DVI-I connector is made.
736 */
737int drm_mode_create_dvi_i_properties(struct drm_device *dev)
738{
739 struct drm_property *dvi_i_selector;
740 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 741
742 if (dev->mode_config.dvi_i_select_subconnector_property)
743 return 0;
744
745 dvi_i_selector =
4a67d391 746 drm_property_create_enum(dev, 0,
f453ba04 747 "select subconnector",
4a67d391 748 drm_dvi_i_select_enum_list,
f453ba04 749 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 750 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
751
4a67d391 752 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 753 "subconnector",
4a67d391 754 drm_dvi_i_subconnector_enum_list,
f453ba04 755 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 756 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
757
758 return 0;
759}
760EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
761
762/**
763 * drm_create_tv_properties - create TV specific connector properties
764 * @dev: DRM device
765 * @num_modes: number of different TV formats (modes) supported
766 * @modes: array of pointers to strings containing name of each format
767 *
768 * Called by a driver's TV initialization routine, this function creates
769 * the TV specific connector properties for a given device. Caller is
770 * responsible for allocating a list of format names and passing them to
771 * this routine.
772 */
773int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
774 char *modes[])
775{
776 struct drm_property *tv_selector;
777 struct drm_property *tv_subconnector;
778 int i;
779
780 if (dev->mode_config.tv_select_subconnector_property)
781 return 0;
782
783 /*
784 * Basic connector properties
785 */
4a67d391 786 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 787 "select subconnector",
4a67d391 788 drm_tv_select_enum_list,
f453ba04 789 ARRAY_SIZE(drm_tv_select_enum_list));
f453ba04
DA		 790 dev->mode_config.tv_select_subconnector_property = tv_selector;
791
792 tv_subconnector =
4a67d391
SH		 793 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
794 "subconnector",
795 drm_tv_subconnector_enum_list,
f453ba04 796 ARRAY_SIZE(drm_tv_subconnector_enum_list));
f453ba04
DA		 797 dev->mode_config.tv_subconnector_property = tv_subconnector;
798
799 /*
800 * Other, TV specific properties: margins & TV modes.
801 */
802 dev->mode_config.tv_left_margin_property =
d9bc3c02 803 drm_property_create_range(dev, 0, "left margin", 0, 100);
f453ba04
DA		 804
805 dev->mode_config.tv_right_margin_property =
d9bc3c02 806 drm_property_create_range(dev, 0, "right margin", 0, 100);
f453ba04
DA		 807
808 dev->mode_config.tv_top_margin_property =
d9bc3c02 809 drm_property_create_range(dev, 0, "top margin", 0, 100);
f453ba04
DA		 810
811 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 812 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
f453ba04
DA		 813
814 dev->mode_config.tv_mode_property =
815 drm_property_create(dev, DRM_MODE_PROP_ENUM,
816 "mode", num_modes);
817 for (i = 0; i < num_modes; i++)
818 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
819 i, modes[i]);
820
b6b7902e 821 dev->mode_config.tv_brightness_property =
d9bc3c02 822 drm_property_create_range(dev, 0, "brightness", 0, 100);
b6b7902e
FJ		 823
824 dev->mode_config.tv_contrast_property =
d9bc3c02 825 drm_property_create_range(dev, 0, "contrast", 0, 100);
b6b7902e
FJ		 826
827 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 828 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
b6b7902e 829
a75f0236 830 dev->mode_config.tv_overscan_property =
d9bc3c02 831 drm_property_create_range(dev, 0, "overscan", 0, 100);
a75f0236
FJ		 832
833 dev->mode_config.tv_saturation_property =
d9bc3c02 834 drm_property_create_range(dev, 0, "saturation", 0, 100);
a75f0236
FJ		 835
836 dev->mode_config.tv_hue_property =
d9bc3c02 837 drm_property_create_range(dev, 0, "hue", 0, 100);
a75f0236 838
f453ba04
DA		 839 return 0;
840}
841EXPORT_SYMBOL(drm_mode_create_tv_properties);
842
843/**
844 * drm_mode_create_scaling_mode_property - create scaling mode property
845 * @dev: DRM device
846 *
847 * Called by a driver the first time it's needed, must be attached to desired
848 * connectors.
849 */
850int drm_mode_create_scaling_mode_property(struct drm_device *dev)
851{
852 struct drm_property *scaling_mode;
f453ba04
DA		 853
854 if (dev->mode_config.scaling_mode_property)
855 return 0;
856
857 scaling_mode =
4a67d391
SH		 858 drm_property_create_enum(dev, 0, "scaling mode",
859 drm_scaling_mode_enum_list,
f453ba04 860 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 861
862 dev->mode_config.scaling_mode_property = scaling_mode;
863
864 return 0;
865}
866EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
867
868/**
869 * drm_mode_create_dithering_property - create dithering property
870 * @dev: DRM device
871 *
872 * Called by a driver the first time it's needed, must be attached to desired
873 * connectors.
874 */
875int drm_mode_create_dithering_property(struct drm_device *dev)
876{
877 struct drm_property *dithering_mode;
f453ba04
DA		 878
879 if (dev->mode_config.dithering_mode_property)
880 return 0;
881
882 dithering_mode =
4a67d391
SH		 883 drm_property_create_enum(dev, 0, "dithering",
884 drm_dithering_mode_enum_list,
f453ba04 885 ARRAY_SIZE(drm_dithering_mode_enum_list));
f453ba04
DA		 886 dev->mode_config.dithering_mode_property = dithering_mode;
887
888 return 0;
889}
890EXPORT_SYMBOL(drm_mode_create_dithering_property);
891
884840aa
JB		 892/**
893 * drm_mode_create_dirty_property - create dirty property
894 * @dev: DRM device
895 *
896 * Called by a driver the first time it's needed, must be attached to desired
897 * connectors.
898 */
899int drm_mode_create_dirty_info_property(struct drm_device *dev)
900{
901 struct drm_property *dirty_info;
884840aa
JB		 902
903 if (dev->mode_config.dirty_info_property)
904 return 0;
905
906 dirty_info =
4a67d391 907 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 908 "dirty",
4a67d391 909 drm_dirty_info_enum_list,
884840aa 910 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 911 dev->mode_config.dirty_info_property = dirty_info;
912
913 return 0;
914}
915EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
916
f453ba04
DA		 917/**
918 * drm_mode_config_init - initialize DRM mode_configuration structure
919 * @dev: DRM device
920 *
921 * LOCKING:
922 * None, should happen single threaded at init time.
923 *
924 * Initialize @dev's mode_config structure, used for tracking the graphics
925 * configuration of @dev.
926 */
927void drm_mode_config_init(struct drm_device *dev)
928{
929 mutex_init(&dev->mode_config.mutex);
ad2563c2 930 mutex_init(&dev->mode_config.idr_mutex);
f453ba04 931 INIT_LIST_HEAD(&dev->mode_config.fb_list);
f453ba04
DA		 932 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
933 INIT_LIST_HEAD(&dev->mode_config.connector_list);
934 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
935 INIT_LIST_HEAD(&dev->mode_config.property_list);
936 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
8cf5c917 937 INIT_LIST_HEAD(&dev->mode_config.plane_list);
f453ba04
DA		 938 idr_init(&dev->mode_config.crtc_idr);
939
940 mutex_lock(&dev->mode_config.mutex);
941 drm_mode_create_standard_connector_properties(dev);
942 mutex_unlock(&dev->mode_config.mutex);
943
944 /* Just to be sure */
945 dev->mode_config.num_fb = 0;
946 dev->mode_config.num_connector = 0;
947 dev->mode_config.num_crtc = 0;
948 dev->mode_config.num_encoder = 0;
f453ba04
DA		 949}
950EXPORT_SYMBOL(drm_mode_config_init);
951
952int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
953{
954 uint32_t total_objects = 0;
955
956 total_objects += dev->mode_config.num_crtc;
957 total_objects += dev->mode_config.num_connector;
958 total_objects += dev->mode_config.num_encoder;
959
f453ba04
DA		 960 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
961 if (!group->id_list)
962 return -ENOMEM;
963
964 group->num_crtcs = 0;
965 group->num_connectors = 0;
966 group->num_encoders = 0;
967 return 0;
968}
969
970int drm_mode_group_init_legacy_group(struct drm_device *dev,
971 struct drm_mode_group *group)
972{
973 struct drm_crtc *crtc;
974 struct drm_encoder *encoder;
975 struct drm_connector *connector;
976 int ret;
977
978 if ((ret = drm_mode_group_init(dev, group)))
979 return ret;
980
981 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
982 group->id_list[group->num_crtcs++] = crtc->base.id;
983
984 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
985 group->id_list[group->num_crtcs + group->num_encoders++] =
986 encoder->base.id;
987
988 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
989 group->id_list[group->num_crtcs + group->num_encoders +
990 group->num_connectors++] = connector->base.id;
991
992 return 0;
993}
9c1dfc55 994EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
f453ba04
DA		 995
996/**
997 * drm_mode_config_cleanup - free up DRM mode_config info
998 * @dev: DRM device
999 *
1000 * LOCKING:
1001 * Caller must hold mode config lock.
1002 *
1003 * Free up all the connectors and CRTCs associated with this DRM device, then
1004 * free up the framebuffers and associated buffer objects.
1005 *
1006 * FIXME: cleanup any dangling user buffer objects too
1007 */
1008void drm_mode_config_cleanup(struct drm_device *dev)
1009{
1010 struct drm_connector *connector, *ot;
1011 struct drm_crtc *crtc, *ct;
1012 struct drm_encoder *encoder, *enct;
1013 struct drm_framebuffer *fb, *fbt;
1014 struct drm_property *property, *pt;
8cf5c917 1015 struct drm_plane *plane, *plt;
f453ba04
DA		 1016
1017 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
1018 head) {
1019 encoder->funcs->destroy(encoder);
1020 }
1021
1022 list_for_each_entry_safe(connector, ot,
1023 &dev->mode_config.connector_list, head) {
1024 connector->funcs->destroy(connector);
1025 }
1026
1027 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
1028 head) {
1029 drm_property_destroy(dev, property);
1030 }
1031
1032 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
1033 fb->funcs->destroy(fb);
1034 }
1035
1036 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
1037 crtc->funcs->destroy(crtc);
1038 }
1039
8cf5c917
JB		 1040 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
1041 head) {
1042 plane->funcs->destroy(plane);
1043 }
59ce062e
SH		 1044
1045 idr_remove_all(&dev->mode_config.crtc_idr);
1046 idr_destroy(&dev->mode_config.crtc_idr);
f453ba04
DA		 1047}
1048EXPORT_SYMBOL(drm_mode_config_cleanup);
1049
f453ba04
DA		 1050/**
1051 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1052 * @out: drm_mode_modeinfo struct to return to the user
1053 * @in: drm_display_mode to use
1054 *
1055 * LOCKING:
1056 * None.
1057 *
1058 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1059 * the user.
1060 */
93bbf6db
VS		 1061static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1062 const struct drm_display_mode *in)
f453ba04 1063{
e36fae38
VS		 1064 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1065 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1066 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1067 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1068 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1069 "timing values too large for mode info\n");
1070
f453ba04
DA		 1071 out->clock = in->clock;
1072 out->hdisplay = in->hdisplay;
1073 out->hsync_start = in->hsync_start;
1074 out->hsync_end = in->hsync_end;
1075 out->htotal = in->htotal;
1076 out->hskew = in->hskew;
1077 out->vdisplay = in->vdisplay;
1078 out->vsync_start = in->vsync_start;
1079 out->vsync_end = in->vsync_end;
1080 out->vtotal = in->vtotal;
1081 out->vscan = in->vscan;
1082 out->vrefresh = in->vrefresh;
1083 out->flags = in->flags;
1084 out->type = in->type;
1085 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1086 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1087}
1088
1089/**
1090 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1091 * @out: drm_display_mode to return to the user
1092 * @in: drm_mode_modeinfo to use
1093 *
1094 * LOCKING:
1095 * None.
1096 *
1097 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1098 * the caller.
90367bf6
VS		 1099 *
1100 * RETURNS:
1101 * Zero on success, errno on failure.
f453ba04 1102 */
93bbf6db
VS		 1103static int drm_crtc_convert_umode(struct drm_display_mode *out,
1104 const struct drm_mode_modeinfo *in)
f453ba04 1105{
90367bf6
VS		 1106 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1107 return -ERANGE;
1108
f453ba04
DA		 1109 out->clock = in->clock;
1110 out->hdisplay = in->hdisplay;
1111 out->hsync_start = in->hsync_start;
1112 out->hsync_end = in->hsync_end;
1113 out->htotal = in->htotal;
1114 out->hskew = in->hskew;
1115 out->vdisplay = in->vdisplay;
1116 out->vsync_start = in->vsync_start;
1117 out->vsync_end = in->vsync_end;
1118 out->vtotal = in->vtotal;
1119 out->vscan = in->vscan;
1120 out->vrefresh = in->vrefresh;
1121 out->flags = in->flags;
1122 out->type = in->type;
1123 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1124 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
90367bf6
VS		 1125
1126 return 0;
f453ba04
DA		 1127}
1128
1129/**
1130 * drm_mode_getresources - get graphics configuration
1131 * @inode: inode from the ioctl
1132 * @filp: file * from the ioctl
1133 * @cmd: cmd from ioctl
1134 * @arg: arg from ioctl
1135 *
1136 * LOCKING:
1137 * Takes mode config lock.
1138 *
1139 * Construct a set of configuration description structures and return
1140 * them to the user, including CRTC, connector and framebuffer configuration.
1141 *
1142 * Called by the user via ioctl.
1143 *
1144 * RETURNS:
1145 * Zero on success, errno on failure.
1146 */
1147int drm_mode_getresources(struct drm_device *dev, void *data,
1148 struct drm_file *file_priv)
1149{
1150 struct drm_mode_card_res *card_res = data;
1151 struct list_head *lh;
1152 struct drm_framebuffer *fb;
1153 struct drm_connector *connector;
1154 struct drm_crtc *crtc;
1155 struct drm_encoder *encoder;
1156 int ret = 0;
1157 int connector_count = 0;
1158 int crtc_count = 0;
1159 int fb_count = 0;
1160 int encoder_count = 0;
1161 int copied = 0, i;
1162 uint32_t __user *fb_id;
1163 uint32_t __user *crtc_id;
1164 uint32_t __user *connector_id;
1165 uint32_t __user *encoder_id;
1166 struct drm_mode_group *mode_group;
1167
fb3b06c8
DA		 1168 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1169 return -EINVAL;
1170
f453ba04
DA		 1171 mutex_lock(&dev->mode_config.mutex);
1172
1173 /*
1174 * For the non-control nodes we need to limit the list of resources
1175 * by IDs in the group list for this node
1176 */
1177 list_for_each(lh, &file_priv->fbs)
1178 fb_count++;
1179
1180 mode_group = &file_priv->master->minor->mode_group;
1181 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1182
1183 list_for_each(lh, &dev->mode_config.crtc_list)
1184 crtc_count++;
1185
1186 list_for_each(lh, &dev->mode_config.connector_list)
1187 connector_count++;
1188
1189 list_for_each(lh, &dev->mode_config.encoder_list)
1190 encoder_count++;
1191 } else {
1192
1193 crtc_count = mode_group->num_crtcs;
1194 connector_count = mode_group->num_connectors;
1195 encoder_count = mode_group->num_encoders;
1196 }
1197
1198 card_res->max_height = dev->mode_config.max_height;
1199 card_res->min_height = dev->mode_config.min_height;
1200 card_res->max_width = dev->mode_config.max_width;
1201 card_res->min_width = dev->mode_config.min_width;
1202
1203 /* handle this in 4 parts */
1204 /* FBs */
1205 if (card_res->count_fbs >= fb_count) {
1206 copied = 0;
1207 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
618c75e4 1208 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
f453ba04
DA		 1209 if (put_user(fb->base.id, fb_id + copied)) {
1210 ret = -EFAULT;
1211 goto out;
1212 }
1213 copied++;
1214 }
1215 }
1216 card_res->count_fbs = fb_count;
1217
1218 /* CRTCs */
1219 if (card_res->count_crtcs >= crtc_count) {
1220 copied = 0;
1221 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1222 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1223 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1224 head) {
9440106b 1225 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1226 if (put_user(crtc->base.id, crtc_id + copied)) {
1227 ret = -EFAULT;
1228 goto out;
1229 }
1230 copied++;
1231 }
1232 } else {
1233 for (i = 0; i < mode_group->num_crtcs; i++) {
1234 if (put_user(mode_group->id_list[i],
1235 crtc_id + copied)) {
1236 ret = -EFAULT;
1237 goto out;
1238 }
1239 copied++;
1240 }
1241 }
1242 }
1243 card_res->count_crtcs = crtc_count;
1244
1245 /* Encoders */
1246 if (card_res->count_encoders >= encoder_count) {
1247 copied = 0;
1248 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1249 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1250 list_for_each_entry(encoder,
1251 &dev->mode_config.encoder_list,
1252 head) {
9440106b
JG		 1253 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1254 drm_get_encoder_name(encoder));
f453ba04
DA		 1255 if (put_user(encoder->base.id, encoder_id +
1256 copied)) {
1257 ret = -EFAULT;
1258 goto out;
1259 }
1260 copied++;
1261 }
1262 } else {
1263 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1264 if (put_user(mode_group->id_list[i],
1265 encoder_id + copied)) {
1266 ret = -EFAULT;
1267 goto out;
1268 }
1269 copied++;
1270 }
1271
1272 }
1273 }
1274 card_res->count_encoders = encoder_count;
1275
1276 /* Connectors */
1277 if (card_res->count_connectors >= connector_count) {
1278 copied = 0;
1279 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1280 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1281 list_for_each_entry(connector,
1282 &dev->mode_config.connector_list,
1283 head) {
9440106b
JG		 1284 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1285 connector->base.id,
1286 drm_get_connector_name(connector));
f453ba04
DA		 1287 if (put_user(connector->base.id,
1288 connector_id + copied)) {
1289 ret = -EFAULT;
1290 goto out;
1291 }
1292 copied++;
1293 }
1294 } else {
1295 int start = mode_group->num_crtcs +
1296 mode_group->num_encoders;
1297 for (i = start; i < start + mode_group->num_connectors; i++) {
1298 if (put_user(mode_group->id_list[i],
1299 connector_id + copied)) {
1300 ret = -EFAULT;
1301 goto out;
1302 }
1303 copied++;
1304 }
1305 }
1306 }
1307 card_res->count_connectors = connector_count;
1308
9440106b 1309 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1310 card_res->count_connectors, card_res->count_encoders);
1311
1312out:
1313 mutex_unlock(&dev->mode_config.mutex);
1314 return ret;
1315}
1316
1317/**
1318 * drm_mode_getcrtc - get CRTC configuration
1319 * @inode: inode from the ioctl
1320 * @filp: file * from the ioctl
1321 * @cmd: cmd from ioctl
1322 * @arg: arg from ioctl
1323 *
1324 * LOCKING:
b20f3867 1325 * Takes mode config lock.
f453ba04
DA		 1326 *
1327 * Construct a CRTC configuration structure to return to the user.
1328 *
1329 * Called by the user via ioctl.
1330 *
1331 * RETURNS:
1332 * Zero on success, errno on failure.
1333 */
1334int drm_mode_getcrtc(struct drm_device *dev,
1335 void *data, struct drm_file *file_priv)
1336{
1337 struct drm_mode_crtc *crtc_resp = data;
1338 struct drm_crtc *crtc;
1339 struct drm_mode_object *obj;
1340 int ret = 0;
1341
fb3b06c8
DA		 1342 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1343 return -EINVAL;
1344
f453ba04
DA		 1345 mutex_lock(&dev->mode_config.mutex);
1346
1347 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1348 DRM_MODE_OBJECT_CRTC);
1349 if (!obj) {
1350 ret = -EINVAL;
1351 goto out;
1352 }
1353 crtc = obj_to_crtc(obj);
1354
1355 crtc_resp->x = crtc->x;
1356 crtc_resp->y = crtc->y;
1357 crtc_resp->gamma_size = crtc->gamma_size;
1358 if (crtc->fb)
1359 crtc_resp->fb_id = crtc->fb->base.id;
1360 else
1361 crtc_resp->fb_id = 0;
1362
1363 if (crtc->enabled) {
1364
1365 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1366 crtc_resp->mode_valid = 1;
1367
1368 } else {
1369 crtc_resp->mode_valid = 0;
1370 }
1371
1372out:
1373 mutex_unlock(&dev->mode_config.mutex);
1374 return ret;
1375}
1376
1377/**
1378 * drm_mode_getconnector - get connector configuration
1379 * @inode: inode from the ioctl
1380 * @filp: file * from the ioctl
1381 * @cmd: cmd from ioctl
1382 * @arg: arg from ioctl
1383 *
1384 * LOCKING:
b20f3867 1385 * Takes mode config lock.
f453ba04
DA		 1386 *
1387 * Construct a connector configuration structure to return to the user.
1388 *
1389 * Called by the user via ioctl.
1390 *
1391 * RETURNS:
1392 * Zero on success, errno on failure.
1393 */
1394int drm_mode_getconnector(struct drm_device *dev, void *data,
1395 struct drm_file *file_priv)
1396{
1397 struct drm_mode_get_connector *out_resp = data;
1398 struct drm_mode_object *obj;
1399 struct drm_connector *connector;
1400 struct drm_display_mode *mode;
1401 int mode_count = 0;
1402 int props_count = 0;
1403 int encoders_count = 0;
1404 int ret = 0;
1405 int copied = 0;
1406 int i;
1407 struct drm_mode_modeinfo u_mode;
1408 struct drm_mode_modeinfo __user *mode_ptr;
1409 uint32_t __user *prop_ptr;
1410 uint64_t __user *prop_values;
1411 uint32_t __user *encoder_ptr;
1412
fb3b06c8
DA		 1413 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1414 return -EINVAL;
1415
f453ba04
DA		 1416 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1417
9440106b 1418 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04
DA		 1419
1420 mutex_lock(&dev->mode_config.mutex);
1421
1422 obj = drm_mode_object_find(dev, out_resp->connector_id,
1423 DRM_MODE_OBJECT_CONNECTOR);
1424 if (!obj) {
1425 ret = -EINVAL;
1426 goto out;
1427 }
1428 connector = obj_to_connector(obj);
1429
7f88a9be 1430 props_count = connector->properties.count;
f453ba04
DA		 1431
1432 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1433 if (connector->encoder_ids[i] != 0) {
1434 encoders_count++;
1435 }
1436 }
1437
1438 if (out_resp->count_modes == 0) {
1439 connector->funcs->fill_modes(connector,
1440 dev->mode_config.max_width,
1441 dev->mode_config.max_height);
1442 }
1443
1444 /* delayed so we get modes regardless of pre-fill_modes state */
1445 list_for_each_entry(mode, &connector->modes, head)
1446 mode_count++;
1447
1448 out_resp->connector_id = connector->base.id;
1449 out_resp->connector_type = connector->connector_type;
1450 out_resp->connector_type_id = connector->connector_type_id;
1451 out_resp->mm_width = connector->display_info.width_mm;
1452 out_resp->mm_height = connector->display_info.height_mm;
1453 out_resp->subpixel = connector->display_info.subpixel_order;
1454 out_resp->connection = connector->status;
1455 if (connector->encoder)
1456 out_resp->encoder_id = connector->encoder->base.id;
1457 else
1458 out_resp->encoder_id = 0;
1459
1460 /*
1461 * This ioctl is called twice, once to determine how much space is
1462 * needed, and the 2nd time to fill it.
1463 */
1464 if ((out_resp->count_modes >= mode_count) && mode_count) {
1465 copied = 0;
81f6c7f8 1466 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04
DA		 1467 list_for_each_entry(mode, &connector->modes, head) {
1468 drm_crtc_convert_to_umode(&u_mode, mode);
1469 if (copy_to_user(mode_ptr + copied,
1470 &u_mode, sizeof(u_mode))) {
1471 ret = -EFAULT;
1472 goto out;
1473 }
1474 copied++;
1475 }
1476 }
1477 out_resp->count_modes = mode_count;
1478
1479 if ((out_resp->count_props >= props_count) && props_count) {
1480 copied = 0;
81f6c7f8
VS		 1481 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1482 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
7f88a9be
PZ		 1483 for (i = 0; i < connector->properties.count; i++) {
1484 if (put_user(connector->properties.ids[i],
1485 prop_ptr + copied)) {
1486 ret = -EFAULT;
1487 goto out;
1488 }
f453ba04 1489
7f88a9be
PZ		 1490 if (put_user(connector->properties.values[i],
1491 prop_values + copied)) {
1492 ret = -EFAULT;
1493 goto out;
f453ba04 1494 }
7f88a9be 1495 copied++;
f453ba04
DA		 1496 }
1497 }
1498 out_resp->count_props = props_count;
1499
1500 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1501 copied = 0;
81f6c7f8 1502 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 1503 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1504 if (connector->encoder_ids[i] != 0) {
1505 if (put_user(connector->encoder_ids[i],
1506 encoder_ptr + copied)) {
1507 ret = -EFAULT;
1508 goto out;
1509 }
1510 copied++;
1511 }
1512 }
1513 }
1514 out_resp->count_encoders = encoders_count;
1515
1516out:
1517 mutex_unlock(&dev->mode_config.mutex);
1518 return ret;
1519}
1520
1521int drm_mode_getencoder(struct drm_device *dev, void *data,
1522 struct drm_file *file_priv)
1523{
1524 struct drm_mode_get_encoder *enc_resp = data;
1525 struct drm_mode_object *obj;
1526 struct drm_encoder *encoder;
1527 int ret = 0;
1528
fb3b06c8
DA		 1529 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1530 return -EINVAL;
1531
f453ba04
DA		 1532 mutex_lock(&dev->mode_config.mutex);
1533 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1534 DRM_MODE_OBJECT_ENCODER);
1535 if (!obj) {
1536 ret = -EINVAL;
1537 goto out;
1538 }
1539 encoder = obj_to_encoder(obj);
1540
1541 if (encoder->crtc)
1542 enc_resp->crtc_id = encoder->crtc->base.id;
1543 else
1544 enc_resp->crtc_id = 0;
1545 enc_resp->encoder_type = encoder->encoder_type;
1546 enc_resp->encoder_id = encoder->base.id;
1547 enc_resp->possible_crtcs = encoder->possible_crtcs;
1548 enc_resp->possible_clones = encoder->possible_clones;
1549
1550out:
1551 mutex_unlock(&dev->mode_config.mutex);
1552 return ret;
1553}
1554
8cf5c917
JB		 1555/**
1556 * drm_mode_getplane_res - get plane info
1557 * @dev: DRM device
1558 * @data: ioctl data
1559 * @file_priv: DRM file info
1560 *
b20f3867
SH		 1561 * LOCKING:
1562 * Takes mode config lock.
1563 *
8cf5c917
JB		 1564 * Return an plane count and set of IDs.
1565 */
1566int drm_mode_getplane_res(struct drm_device *dev, void *data,
1567 struct drm_file *file_priv)
1568{
1569 struct drm_mode_get_plane_res *plane_resp = data;
1570 struct drm_mode_config *config;
1571 struct drm_plane *plane;
1572 uint32_t __user *plane_ptr;
1573 int copied = 0, ret = 0;
1574
1575 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1576 return -EINVAL;
1577
1578 mutex_lock(&dev->mode_config.mutex);
1579 config = &dev->mode_config;
1580
1581 /*
1582 * This ioctl is called twice, once to determine how much space is
1583 * needed, and the 2nd time to fill it.
1584 */
1585 if (config->num_plane &&
1586 (plane_resp->count_planes >= config->num_plane)) {
81f6c7f8 1587 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917
JB		 1588
1589 list_for_each_entry(plane, &config->plane_list, head) {
1590 if (put_user(plane->base.id, plane_ptr + copied)) {
1591 ret = -EFAULT;
1592 goto out;
1593 }
1594 copied++;
1595 }
1596 }
1597 plane_resp->count_planes = config->num_plane;
1598
1599out:
1600 mutex_unlock(&dev->mode_config.mutex);
1601 return ret;
1602}
1603
1604/**
1605 * drm_mode_getplane - get plane info
1606 * @dev: DRM device
1607 * @data: ioctl data
1608 * @file_priv: DRM file info
1609 *
b20f3867
SH		 1610 * LOCKING:
1611 * Takes mode config lock.
1612 *
8cf5c917
JB		 1613 * Return plane info, including formats supported, gamma size, any
1614 * current fb, etc.
1615 */
1616int drm_mode_getplane(struct drm_device *dev, void *data,
1617 struct drm_file *file_priv)
1618{
1619 struct drm_mode_get_plane *plane_resp = data;
1620 struct drm_mode_object *obj;
1621 struct drm_plane *plane;
1622 uint32_t __user *format_ptr;
1623 int ret = 0;
1624
1625 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1626 return -EINVAL;
1627
1628 mutex_lock(&dev->mode_config.mutex);
1629 obj = drm_mode_object_find(dev, plane_resp->plane_id,
1630 DRM_MODE_OBJECT_PLANE);
1631 if (!obj) {
1632 ret = -ENOENT;
1633 goto out;
1634 }
1635 plane = obj_to_plane(obj);
1636
1637 if (plane->crtc)
1638 plane_resp->crtc_id = plane->crtc->base.id;
1639 else
1640 plane_resp->crtc_id = 0;
1641
1642 if (plane->fb)
1643 plane_resp->fb_id = plane->fb->base.id;
1644 else
1645 plane_resp->fb_id = 0;
1646
1647 plane_resp->plane_id = plane->base.id;
1648 plane_resp->possible_crtcs = plane->possible_crtcs;
1649 plane_resp->gamma_size = plane->gamma_size;
1650
1651 /*
1652 * This ioctl is called twice, once to determine how much space is
1653 * needed, and the 2nd time to fill it.
1654 */
1655 if (plane->format_count &&
1656 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 1657 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 1658 if (copy_to_user(format_ptr,
1659 plane->format_types,
1660 sizeof(uint32_t) * plane->format_count)) {
1661 ret = -EFAULT;
1662 goto out;
1663 }
1664 }
1665 plane_resp->count_format_types = plane->format_count;
1666
1667out:
1668 mutex_unlock(&dev->mode_config.mutex);
1669 return ret;
1670}
1671
1672/**
1673 * drm_mode_setplane - set up or tear down an plane
1674 * @dev: DRM device
1675 * @data: ioctl data*
1676 * @file_prive: DRM file info
1677 *
b20f3867
SH		 1678 * LOCKING:
1679 * Takes mode config lock.
1680 *
8cf5c917
JB		 1681 * Set plane info, including placement, fb, scaling, and other factors.
1682 * Or pass a NULL fb to disable.
1683 */
1684int drm_mode_setplane(struct drm_device *dev, void *data,
1685 struct drm_file *file_priv)
1686{
1687 struct drm_mode_set_plane *plane_req = data;
1688 struct drm_mode_object *obj;
1689 struct drm_plane *plane;
1690 struct drm_crtc *crtc;
1691 struct drm_framebuffer *fb;
1692 int ret = 0;
42ef8789 1693 unsigned int fb_width, fb_height;
62443be6 1694 int i;
8cf5c917
JB		 1695
1696 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1697 return -EINVAL;
1698
1699 mutex_lock(&dev->mode_config.mutex);
1700
1701 /*
1702 * First, find the plane, crtc, and fb objects. If not available,
1703 * we don't bother to call the driver.
1704 */
1705 obj = drm_mode_object_find(dev, plane_req->plane_id,
1706 DRM_MODE_OBJECT_PLANE);
1707 if (!obj) {
1708 DRM_DEBUG_KMS("Unknown plane ID %d\n",
1709 plane_req->plane_id);
1710 ret = -ENOENT;
1711 goto out;
1712 }
1713 plane = obj_to_plane(obj);
1714
1715 /* No fb means shut it down */
1716 if (!plane_req->fb_id) {
1717 plane->funcs->disable_plane(plane);
e5e3b44c
VS		 1718 plane->crtc = NULL;
1719 plane->fb = NULL;
8cf5c917
JB		 1720 goto out;
1721 }
1722
1723 obj = drm_mode_object_find(dev, plane_req->crtc_id,
1724 DRM_MODE_OBJECT_CRTC);
1725 if (!obj) {
1726 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
1727 plane_req->crtc_id);
1728 ret = -ENOENT;
1729 goto out;
1730 }
1731 crtc = obj_to_crtc(obj);
1732
1733 obj = drm_mode_object_find(dev, plane_req->fb_id,
1734 DRM_MODE_OBJECT_FB);
1735 if (!obj) {
1736 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
1737 plane_req->fb_id);
1738 ret = -ENOENT;
1739 goto out;
1740 }
1741 fb = obj_to_fb(obj);
1742
62443be6
VS		 1743 /* Check whether this plane supports the fb pixel format. */
1744 for (i = 0; i < plane->format_count; i++)
1745 if (fb->pixel_format == plane->format_types[i])
1746 break;
1747 if (i == plane->format_count) {
1748 DRM_DEBUG_KMS("Invalid pixel format 0x%08x\n", fb->pixel_format);
1749 ret = -EINVAL;
1750 goto out;
1751 }
1752
42ef8789
VS		 1753 fb_width = fb->width << 16;
1754 fb_height = fb->height << 16;
1755
1756 /* Make sure source coordinates are inside the fb. */
1757 if (plane_req->src_w > fb_width ||
1758 plane_req->src_x > fb_width - plane_req->src_w ||
1759 plane_req->src_h > fb_height ||
1760 plane_req->src_y > fb_height - plane_req->src_h) {
1761 DRM_DEBUG_KMS("Invalid source coordinates "
1762 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
1763 plane_req->src_w >> 16,
1764 ((plane_req->src_w & 0xffff) * 15625) >> 10,
1765 plane_req->src_h >> 16,
1766 ((plane_req->src_h & 0xffff) * 15625) >> 10,
1767 plane_req->src_x >> 16,
1768 ((plane_req->src_x & 0xffff) * 15625) >> 10,
1769 plane_req->src_y >> 16,
1770 ((plane_req->src_y & 0xffff) * 15625) >> 10);
1771 ret = -ENOSPC;
1772 goto out;
1773 }
1774
687a0400
VS		 1775 /* Give drivers some help against integer overflows */
1776 if (plane_req->crtc_w > INT_MAX ||
1777 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
1778 plane_req->crtc_h > INT_MAX ||
1779 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
1780 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
1781 plane_req->crtc_w, plane_req->crtc_h,
1782 plane_req->crtc_x, plane_req->crtc_y);
1783 ret = -ERANGE;
1784 goto out;
1785 }
1786
8cf5c917
JB		 1787 ret = plane->funcs->update_plane(plane, crtc, fb,
1788 plane_req->crtc_x, plane_req->crtc_y,
1789 plane_req->crtc_w, plane_req->crtc_h,
1790 plane_req->src_x, plane_req->src_y,
1791 plane_req->src_w, plane_req->src_h);
1792 if (!ret) {
1793 plane->crtc = crtc;
1794 plane->fb = fb;
1795 }
1796
1797out:
1798 mutex_unlock(&dev->mode_config.mutex);
1799
1800 return ret;
1801}
1802
f453ba04
DA		 1803/**
1804 * drm_mode_setcrtc - set CRTC configuration
1805 * @inode: inode from the ioctl
1806 * @filp: file * from the ioctl
1807 * @cmd: cmd from ioctl
1808 * @arg: arg from ioctl
1809 *
1810 * LOCKING:
b20f3867 1811 * Takes mode config lock.
f453ba04
DA		 1812 *
1813 * Build a new CRTC configuration based on user request.
1814 *
1815 * Called by the user via ioctl.
1816 *
1817 * RETURNS:
1818 * Zero on success, errno on failure.
1819 */
1820int drm_mode_setcrtc(struct drm_device *dev, void *data,
1821 struct drm_file *file_priv)
1822{
1823 struct drm_mode_config *config = &dev->mode_config;
1824 struct drm_mode_crtc *crtc_req = data;
1825 struct drm_mode_object *obj;
6653cc8d 1826 struct drm_crtc *crtc;
f453ba04
DA		 1827 struct drm_connector **connector_set = NULL, *connector;
1828 struct drm_framebuffer *fb = NULL;
1829 struct drm_display_mode *mode = NULL;
1830 struct drm_mode_set set;
1831 uint32_t __user *set_connectors_ptr;
4a1b0714 1832 int ret;
f453ba04
DA		 1833 int i;
1834
fb3b06c8
DA		 1835 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1836 return -EINVAL;
1837
1d97e915
VS		 1838 /* For some reason crtc x/y offsets are signed internally. */
1839 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
1840 return -ERANGE;
1841
f453ba04
DA		 1842 mutex_lock(&dev->mode_config.mutex);
1843 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1844 DRM_MODE_OBJECT_CRTC);
1845 if (!obj) {
58367ed6 1846 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f453ba04
DA		 1847 ret = -EINVAL;
1848 goto out;
1849 }
1850 crtc = obj_to_crtc(obj);
9440106b 1851 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1852
1853 if (crtc_req->mode_valid) {
1854 /* If we have a mode we need a framebuffer. */
1855 /* If we pass -1, set the mode with the currently bound fb */
1856 if (crtc_req->fb_id == -1) {
6653cc8d
VS		 1857 if (!crtc->fb) {
1858 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
1859 ret = -EINVAL;
1860 goto out;
f453ba04 1861 }
6653cc8d 1862 fb = crtc->fb;
f453ba04
DA		 1863 } else {
1864 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1865 DRM_MODE_OBJECT_FB);
1866 if (!obj) {
58367ed6
ZY		 1867 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1868 crtc_req->fb_id);
f453ba04
DA		 1869 ret = -EINVAL;
1870 goto out;
1871 }
1872 fb = obj_to_fb(obj);
1873 }
1874
1875 mode = drm_mode_create(dev);
ee34ab5b
VS		 1876 if (!mode) {
1877 ret = -ENOMEM;
1878 goto out;
1879 }
1880
90367bf6
VS		 1881 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
1882 if (ret) {
1883 DRM_DEBUG_KMS("Invalid mode\n");
1884 goto out;
1885 }
1886
f453ba04 1887 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42
VS		 1888
1889 if (mode->hdisplay > fb->width ||
1890 mode->vdisplay > fb->height ||
1891 crtc_req->x > fb->width - mode->hdisplay ||
1892 crtc_req->y > fb->height - mode->vdisplay) {
1893 DRM_DEBUG_KMS("Invalid CRTC viewport %ux%u+%u+%u for fb size %ux%u.\n",
1894 mode->hdisplay, mode->vdisplay,
1895 crtc_req->x, crtc_req->y,
1896 fb->width, fb->height);
1897 ret = -ENOSPC;
1898 goto out;
1899 }
f453ba04
DA		 1900 }
1901
1902 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 1903 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 1904 ret = -EINVAL;
1905 goto out;
1906 }
1907
7781de74 1908 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 1909 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 1910 crtc_req->count_connectors);
1911 ret = -EINVAL;
1912 goto out;
1913 }
1914
1915 if (crtc_req->count_connectors > 0) {
1916 u32 out_id;
1917
1918 /* Avoid unbounded kernel memory allocation */
1919 if (crtc_req->count_connectors > config->num_connector) {
1920 ret = -EINVAL;
1921 goto out;
1922 }
1923
1924 connector_set = kmalloc(crtc_req->count_connectors *
1925 sizeof(struct drm_connector *),
1926 GFP_KERNEL);
1927 if (!connector_set) {
1928 ret = -ENOMEM;
1929 goto out;
1930 }
1931
1932 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 1933 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 1934 if (get_user(out_id, &set_connectors_ptr[i])) {
1935 ret = -EFAULT;
1936 goto out;
1937 }
1938
1939 obj = drm_mode_object_find(dev, out_id,
1940 DRM_MODE_OBJECT_CONNECTOR);
1941 if (!obj) {
58367ed6
ZY		 1942 DRM_DEBUG_KMS("Connector id %d unknown\n",
1943 out_id);
f453ba04
DA		 1944 ret = -EINVAL;
1945 goto out;
1946 }
1947 connector = obj_to_connector(obj);
9440106b
JG		 1948 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1949 connector->base.id,
1950 drm_get_connector_name(connector));
f453ba04
DA		 1951
1952 connector_set[i] = connector;
1953 }
1954 }
1955
1956 set.crtc = crtc;
1957 set.x = crtc_req->x;
1958 set.y = crtc_req->y;
1959 set.mode = mode;
1960 set.connectors = connector_set;
1961 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 1962 set.fb = fb;
f453ba04
DA		 1963 ret = crtc->funcs->set_config(&set);
1964
1965out:
1966 kfree(connector_set);
ee34ab5b 1967 drm_mode_destroy(dev, mode);
f453ba04
DA		 1968 mutex_unlock(&dev->mode_config.mutex);
1969 return ret;
1970}
1971
1972int drm_mode_cursor_ioctl(struct drm_device *dev,
1973 void *data, struct drm_file *file_priv)
1974{
1975 struct drm_mode_cursor *req = data;
1976 struct drm_mode_object *obj;
1977 struct drm_crtc *crtc;
1978 int ret = 0;
1979
fb3b06c8
DA		 1980 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1981 return -EINVAL;
1982
acb4b992 1983 if (!req->flags)
f453ba04 1984 return -EINVAL;
f453ba04
DA		 1985
1986 mutex_lock(&dev->mode_config.mutex);
e0c8463a 1987 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
f453ba04 1988 if (!obj) {
58367ed6 1989 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f453ba04
DA		 1990 ret = -EINVAL;
1991 goto out;
1992 }
1993 crtc = obj_to_crtc(obj);
1994
1995 if (req->flags & DRM_MODE_CURSOR_BO) {
1996 if (!crtc->funcs->cursor_set) {
f453ba04
DA		 1997 ret = -ENXIO;
1998 goto out;
1999 }
2000 /* Turns off the cursor if handle is 0 */
2001 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2002 req->width, req->height);
2003 }
2004
2005 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2006 if (crtc->funcs->cursor_move) {
2007 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2008 } else {
f453ba04
DA		 2009 ret = -EFAULT;
2010 goto out;
2011 }
2012 }
2013out:
2014 mutex_unlock(&dev->mode_config.mutex);
2015 return ret;
2016}
2017
308e5bcb
JB		 2018/* Original addfb only supported RGB formats, so figure out which one */
2019uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2020{
2021 uint32_t fmt;
2022
2023 switch (bpp) {
2024 case 8:
04b3924d 2025 fmt = DRM_FORMAT_RGB332;
308e5bcb
JB		 2026 break;
2027 case 16:
2028 if (depth == 15)
04b3924d 2029 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 2030 else
04b3924d 2031 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 2032 break;
2033 case 24:
04b3924d 2034 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 2035 break;
2036 case 32:
2037 if (depth == 24)
04b3924d 2038 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 2039 else if (depth == 30)
04b3924d 2040 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 2041 else
04b3924d 2042 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 2043 break;
2044 default:
04b3924d
VS		 2045 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2046 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 2047 break;
2048 }
2049
2050 return fmt;
2051}
2052EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2053
f453ba04
DA		 2054/**
2055 * drm_mode_addfb - add an FB to the graphics configuration
2056 * @inode: inode from the ioctl
2057 * @filp: file * from the ioctl
2058 * @cmd: cmd from ioctl
2059 * @arg: arg from ioctl
2060 *
2061 * LOCKING:
2062 * Takes mode config lock.
2063 *
2064 * Add a new FB to the specified CRTC, given a user request.
2065 *
2066 * Called by the user via ioctl.
2067 *
2068 * RETURNS:
2069 * Zero on success, errno on failure.
2070 */
2071int drm_mode_addfb(struct drm_device *dev,
2072 void *data, struct drm_file *file_priv)
2073{
308e5bcb
JB		 2074 struct drm_mode_fb_cmd *or = data;
2075 struct drm_mode_fb_cmd2 r = {};
2076 struct drm_mode_config *config = &dev->mode_config;
2077 struct drm_framebuffer *fb;
2078 int ret = 0;
2079
2080 /* Use new struct with format internally */
2081 r.fb_id = or->fb_id;
2082 r.width = or->width;
2083 r.height = or->height;
2084 r.pitches[0] = or->pitch;
2085 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2086 r.handles[0] = or->handle;
2087
2088 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2089 return -EINVAL;
2090
acb4b992 2091 if ((config->min_width > r.width) || (r.width > config->max_width))
308e5bcb 2092 return -EINVAL;
acb4b992
JB		 2093
2094 if ((config->min_height > r.height) || (r.height > config->max_height))
308e5bcb 2095 return -EINVAL;
308e5bcb
JB		 2096
2097 mutex_lock(&dev->mode_config.mutex);
2098
2099 /* TODO check buffer is sufficiently large */
2100 /* TODO setup destructor callback */
2101
2102 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2103 if (IS_ERR(fb)) {
1aa1b11c 2104 DRM_DEBUG_KMS("could not create framebuffer\n");
308e5bcb
JB		 2105 ret = PTR_ERR(fb);
2106 goto out;
2107 }
2108
2109 or->fb_id = fb->base.id;
2110 list_add(&fb->filp_head, &file_priv->fbs);
2111 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2112
2113out:
2114 mutex_unlock(&dev->mode_config.mutex);
2115 return ret;
2116}
2117
935b5977
VS		 2118static int format_check(struct drm_mode_fb_cmd2 *r)
2119{
2120 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2121
2122 switch (format) {
2123 case DRM_FORMAT_C8:
2124 case DRM_FORMAT_RGB332:
2125 case DRM_FORMAT_BGR233:
2126 case DRM_FORMAT_XRGB4444:
2127 case DRM_FORMAT_XBGR4444:
2128 case DRM_FORMAT_RGBX4444:
2129 case DRM_FORMAT_BGRX4444:
2130 case DRM_FORMAT_ARGB4444:
2131 case DRM_FORMAT_ABGR4444:
2132 case DRM_FORMAT_RGBA4444:
2133 case DRM_FORMAT_BGRA4444:
2134 case DRM_FORMAT_XRGB1555:
2135 case DRM_FORMAT_XBGR1555:
2136 case DRM_FORMAT_RGBX5551:
2137 case DRM_FORMAT_BGRX5551:
2138 case DRM_FORMAT_ARGB1555:
2139 case DRM_FORMAT_ABGR1555:
2140 case DRM_FORMAT_RGBA5551:
2141 case DRM_FORMAT_BGRA5551:
2142 case DRM_FORMAT_RGB565:
2143 case DRM_FORMAT_BGR565:
2144 case DRM_FORMAT_RGB888:
2145 case DRM_FORMAT_BGR888:
2146 case DRM_FORMAT_XRGB8888:
2147 case DRM_FORMAT_XBGR8888:
2148 case DRM_FORMAT_RGBX8888:
2149 case DRM_FORMAT_BGRX8888:
2150 case DRM_FORMAT_ARGB8888:
2151 case DRM_FORMAT_ABGR8888:
2152 case DRM_FORMAT_RGBA8888:
2153 case DRM_FORMAT_BGRA8888:
2154 case DRM_FORMAT_XRGB2101010:
2155 case DRM_FORMAT_XBGR2101010:
2156 case DRM_FORMAT_RGBX1010102:
2157 case DRM_FORMAT_BGRX1010102:
2158 case DRM_FORMAT_ARGB2101010:
2159 case DRM_FORMAT_ABGR2101010:
2160 case DRM_FORMAT_RGBA1010102:
2161 case DRM_FORMAT_BGRA1010102:
2162 case DRM_FORMAT_YUYV:
2163 case DRM_FORMAT_YVYU:
2164 case DRM_FORMAT_UYVY:
2165 case DRM_FORMAT_VYUY:
2166 case DRM_FORMAT_AYUV:
2167 case DRM_FORMAT_NV12:
2168 case DRM_FORMAT_NV21:
2169 case DRM_FORMAT_NV16:
2170 case DRM_FORMAT_NV61:
2171 case DRM_FORMAT_YUV410:
2172 case DRM_FORMAT_YVU410:
2173 case DRM_FORMAT_YUV411:
2174 case DRM_FORMAT_YVU411:
2175 case DRM_FORMAT_YUV420:
2176 case DRM_FORMAT_YVU420:
2177 case DRM_FORMAT_YUV422:
2178 case DRM_FORMAT_YVU422:
2179 case DRM_FORMAT_YUV444:
2180 case DRM_FORMAT_YVU444:
2181 return 0;
2182 default:
2183 return -EINVAL;
2184 }
2185}
2186
d1b45d5f
VS		 2187static int framebuffer_check(struct drm_mode_fb_cmd2 *r)
2188{
2189 int ret, hsub, vsub, num_planes, i;
2190
2191 ret = format_check(r);
2192 if (ret) {
1aa1b11c 2193 DRM_DEBUG_KMS("bad framebuffer format 0x%08x\n", r->pixel_format);
d1b45d5f
VS		 2194 return ret;
2195 }
2196
2197 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2198 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2199 num_planes = drm_format_num_planes(r->pixel_format);
2200
2201 if (r->width == 0 || r->width % hsub) {
1aa1b11c 2202 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
d1b45d5f
VS		 2203 return -EINVAL;
2204 }
2205
2206 if (r->height == 0 || r->height % vsub) {
1aa1b11c 2207 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 2208 return -EINVAL;
2209 }
2210
2211 for (i = 0; i < num_planes; i++) {
2212 unsigned int width = r->width / (i != 0 ? hsub : 1);
2213
2214 if (!r->handles[i]) {
1aa1b11c 2215 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 2216 return -EINVAL;
2217 }
2218
2219 if (r->pitches[i] < drm_format_plane_cpp(r->pixel_format, i) * width) {
1aa1b11c 2220 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 2221 return -EINVAL;
2222 }
2223 }
2224
2225 return 0;
2226}
2227
308e5bcb
JB		 2228/**
2229 * drm_mode_addfb2 - add an FB to the graphics configuration
2230 * @inode: inode from the ioctl
2231 * @filp: file * from the ioctl
2232 * @cmd: cmd from ioctl
2233 * @arg: arg from ioctl
2234 *
2235 * LOCKING:
2236 * Takes mode config lock.
2237 *
2238 * Add a new FB to the specified CRTC, given a user request with format.
2239 *
2240 * Called by the user via ioctl.
2241 *
2242 * RETURNS:
2243 * Zero on success, errno on failure.
2244 */
2245int drm_mode_addfb2(struct drm_device *dev,
2246 void *data, struct drm_file *file_priv)
2247{
2248 struct drm_mode_fb_cmd2 *r = data;
f453ba04
DA		 2249 struct drm_mode_config *config = &dev->mode_config;
2250 struct drm_framebuffer *fb;
4a1b0714 2251 int ret;
f453ba04 2252
fb3b06c8
DA		 2253 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2254 return -EINVAL;
2255
f453ba04 2256 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 2257 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 2258 r->width, config->min_width, config->max_width);
f453ba04
DA		 2259 return -EINVAL;
2260 }
2261 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 2262 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 2263 r->height, config->min_height, config->max_height);
f453ba04
DA		 2264 return -EINVAL;
2265 }
2266
d1b45d5f
VS		 2267 ret = framebuffer_check(r);
2268 if (ret)
935b5977 2269 return ret;
935b5977 2270
f453ba04
DA		 2271 mutex_lock(&dev->mode_config.mutex);
2272
f453ba04 2273 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 2274 if (IS_ERR(fb)) {
1aa1b11c 2275 DRM_DEBUG_KMS("could not create framebuffer\n");
cce13ff7 2276 ret = PTR_ERR(fb);
f453ba04
DA		 2277 goto out;
2278 }
2279
e0c8463a 2280 r->fb_id = fb->base.id;
f453ba04 2281 list_add(&fb->filp_head, &file_priv->fbs);
9440106b 2282 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
f453ba04
DA		 2283
2284out:
2285 mutex_unlock(&dev->mode_config.mutex);
2286 return ret;
2287}
2288
2289/**
2290 * drm_mode_rmfb - remove an FB from the configuration
2291 * @inode: inode from the ioctl
2292 * @filp: file * from the ioctl
2293 * @cmd: cmd from ioctl
2294 * @arg: arg from ioctl
2295 *
2296 * LOCKING:
2297 * Takes mode config lock.
2298 *
2299 * Remove the FB specified by the user.
2300 *
2301 * Called by the user via ioctl.
2302 *
2303 * RETURNS:
2304 * Zero on success, errno on failure.
2305 */
2306int drm_mode_rmfb(struct drm_device *dev,
2307 void *data, struct drm_file *file_priv)
2308{
2309 struct drm_mode_object *obj;
2310 struct drm_framebuffer *fb = NULL;
2311 struct drm_framebuffer *fbl = NULL;
2312 uint32_t *id = data;
2313 int ret = 0;
2314 int found = 0;
2315
fb3b06c8
DA		 2316 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2317 return -EINVAL;
2318
f453ba04
DA		 2319 mutex_lock(&dev->mode_config.mutex);
2320 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
25985edc 2321 /* TODO check that we really get a framebuffer back. */
f453ba04 2322 if (!obj) {
f453ba04
DA		 2323 ret = -EINVAL;
2324 goto out;
2325 }
2326 fb = obj_to_fb(obj);
2327
2328 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2329 if (fb == fbl)
2330 found = 1;
2331
2332 if (!found) {
f453ba04
DA		 2333 ret = -EINVAL;
2334 goto out;
2335 }
2336
2337 /* TODO release all crtc connected to the framebuffer */
2338 /* TODO unhock the destructor from the buffer object */
2339
2340 list_del(&fb->filp_head);
2341 fb->funcs->destroy(fb);
2342
2343out:
2344 mutex_unlock(&dev->mode_config.mutex);
2345 return ret;
2346}
2347
2348/**
2349 * drm_mode_getfb - get FB info
2350 * @inode: inode from the ioctl
2351 * @filp: file * from the ioctl
2352 * @cmd: cmd from ioctl
2353 * @arg: arg from ioctl
2354 *
2355 * LOCKING:
b20f3867 2356 * Takes mode config lock.
f453ba04
DA		 2357 *
2358 * Lookup the FB given its ID and return info about it.
2359 *
2360 * Called by the user via ioctl.
2361 *
2362 * RETURNS:
2363 * Zero on success, errno on failure.
2364 */
2365int drm_mode_getfb(struct drm_device *dev,
2366 void *data, struct drm_file *file_priv)
2367{
2368 struct drm_mode_fb_cmd *r = data;
2369 struct drm_mode_object *obj;
2370 struct drm_framebuffer *fb;
2371 int ret = 0;
2372
fb3b06c8
DA		 2373 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2374 return -EINVAL;
2375
f453ba04 2376 mutex_lock(&dev->mode_config.mutex);
e0c8463a 2377 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
f453ba04 2378 if (!obj) {
f453ba04
DA		 2379 ret = -EINVAL;
2380 goto out;
2381 }
2382 fb = obj_to_fb(obj);
2383
2384 r->height = fb->height;
2385 r->width = fb->width;
2386 r->depth = fb->depth;
2387 r->bpp = fb->bits_per_pixel;
01f2c773 2388 r->pitch = fb->pitches[0];
f453ba04
DA		 2389 fb->funcs->create_handle(fb, file_priv, &r->handle);
2390
2391out:
2392 mutex_unlock(&dev->mode_config.mutex);
2393 return ret;
2394}
2395
884840aa
JB		 2396int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2397 void *data, struct drm_file *file_priv)
2398{
2399 struct drm_clip_rect __user *clips_ptr;
2400 struct drm_clip_rect *clips = NULL;
2401 struct drm_mode_fb_dirty_cmd *r = data;
2402 struct drm_mode_object *obj;
2403 struct drm_framebuffer *fb;
2404 unsigned flags;
2405 int num_clips;
4a1b0714 2406 int ret;
884840aa 2407
fb3b06c8
DA		 2408 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2409 return -EINVAL;
2410
884840aa
JB		 2411 mutex_lock(&dev->mode_config.mutex);
2412 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
2413 if (!obj) {
884840aa
JB		 2414 ret = -EINVAL;
2415 goto out_err1;
2416 }
2417 fb = obj_to_fb(obj);
2418
2419 num_clips = r->num_clips;
81f6c7f8 2420 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 2421
2422 if (!num_clips != !clips_ptr) {
2423 ret = -EINVAL;
2424 goto out_err1;
2425 }
2426
2427 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2428
2429 /* If userspace annotates copy, clips must come in pairs */
2430 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2431 ret = -EINVAL;
2432 goto out_err1;
2433 }
2434
2435 if (num_clips && clips_ptr) {
a5cd3351
XW		 2436 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
2437 ret = -EINVAL;
2438 goto out_err1;
2439 }
884840aa
JB		 2440 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
2441 if (!clips) {
2442 ret = -ENOMEM;
2443 goto out_err1;
2444 }
2445
2446 ret = copy_from_user(clips, clips_ptr,
2447 num_clips * sizeof(*clips));
e902a358
DC		 2448 if (ret) {
2449 ret = -EFAULT;
884840aa 2450 goto out_err2;
e902a358 2451 }
884840aa
JB		 2452 }
2453
2454 if (fb->funcs->dirty) {
02b00162
TH		 2455 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
2456 clips, num_clips);
884840aa
JB		 2457 } else {
2458 ret = -ENOSYS;
2459 goto out_err2;
2460 }
2461
2462out_err2:
2463 kfree(clips);
2464out_err1:
2465 mutex_unlock(&dev->mode_config.mutex);
2466 return ret;
2467}
2468
2469
f453ba04
DA		 2470/**
2471 * drm_fb_release - remove and free the FBs on this file
2472 * @filp: file * from the ioctl
2473 *
2474 * LOCKING:
2475 * Takes mode config lock.
2476 *
2477 * Destroy all the FBs associated with @filp.
2478 *
2479 * Called by the user via ioctl.
2480 *
2481 * RETURNS:
2482 * Zero on success, errno on failure.
2483 */
ea39f835 2484void drm_fb_release(struct drm_file *priv)
f453ba04 2485{
f453ba04
DA		 2486 struct drm_device *dev = priv->minor->dev;
2487 struct drm_framebuffer *fb, *tfb;
2488
2489 mutex_lock(&dev->mode_config.mutex);
2490 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2491 list_del(&fb->filp_head);
2492 fb->funcs->destroy(fb);
2493 }
2494 mutex_unlock(&dev->mode_config.mutex);
2495}
2496
2497/**
2498 * drm_mode_attachmode - add a mode to the user mode list
2499 * @dev: DRM device
2500 * @connector: connector to add the mode to
2501 * @mode: mode to add
2502 *
2503 * Add @mode to @connector's user mode list.
2504 */
1dd6c8bd
VS		 2505static void drm_mode_attachmode(struct drm_device *dev,
2506 struct drm_connector *connector,
2507 struct drm_display_mode *mode)
f453ba04 2508{
f453ba04 2509 list_add_tail(&mode->head, &connector->user_modes);
f453ba04
DA		 2510}
2511
2512int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
ac235daf 2513 const struct drm_display_mode *mode)
f453ba04
DA		 2514{
2515 struct drm_connector *connector;
ac235daf
VS		 2516 int ret = 0;
2517 struct drm_display_mode *dup_mode, *next;
2518 LIST_HEAD(list);
2519
f453ba04
DA		 2520 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2521 if (!connector->encoder)
ac235daf 2522 continue;
f453ba04 2523 if (connector->encoder->crtc == crtc) {
ac235daf
VS		 2524 dup_mode = drm_mode_duplicate(dev, mode);
2525 if (!dup_mode) {
2526 ret = -ENOMEM;
2527 goto out;
2528 }
2529 list_add_tail(&dup_mode->head, &list);
f453ba04
DA		 2530 }
2531 }
ac235daf
VS		 2532
2533 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2534 if (!connector->encoder)
2535 continue;
2536 if (connector->encoder->crtc == crtc)
2537 list_move_tail(list.next, &connector->user_modes);
2538 }
2539
2540 WARN_ON(!list_empty(&list));
2541
2542 out:
2543 list_for_each_entry_safe(dup_mode, next, &list, head)
2544 drm_mode_destroy(dev, dup_mode);
2545
2546 return ret;
f453ba04
DA		 2547}
2548EXPORT_SYMBOL(drm_mode_attachmode_crtc);
2549
2550static int drm_mode_detachmode(struct drm_device *dev,
2551 struct drm_connector *connector,
2552 struct drm_display_mode *mode)
2553{
2554 int found = 0;
2555 int ret = 0;
2556 struct drm_display_mode *match_mode, *t;
2557
2558 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
2559 if (drm_mode_equal(match_mode, mode)) {
2560 list_del(&match_mode->head);
2561 drm_mode_destroy(dev, match_mode);
2562 found = 1;
2563 break;
2564 }
2565 }
2566
2567 if (!found)
2568 ret = -EINVAL;
2569
2570 return ret;
2571}
2572
2573int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
2574{
2575 struct drm_connector *connector;
2576
2577 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2578 drm_mode_detachmode(dev, connector, mode);
2579 }
2580 return 0;
2581}
2582EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2583
2584/**
2585 * drm_fb_attachmode - Attach a user mode to an connector
2586 * @inode: inode from the ioctl
2587 * @filp: file * from the ioctl
2588 * @cmd: cmd from ioctl
2589 * @arg: arg from ioctl
2590 *
2591 * This attaches a user specified mode to an connector.
2592 * Called by the user via ioctl.
2593 *
2594 * RETURNS:
2595 * Zero on success, errno on failure.
2596 */
2597int drm_mode_attachmode_ioctl(struct drm_device *dev,
2598 void *data, struct drm_file *file_priv)
2599{
2600 struct drm_mode_mode_cmd *mode_cmd = data;
2601 struct drm_connector *connector;
2602 struct drm_display_mode *mode;
2603 struct drm_mode_object *obj;
2604 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
4a1b0714 2605 int ret;
f453ba04 2606
fb3b06c8
DA		 2607 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2608 return -EINVAL;
2609
f453ba04
DA		 2610 mutex_lock(&dev->mode_config.mutex);
2611
2612 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2613 if (!obj) {
2614 ret = -EINVAL;
2615 goto out;
2616 }
2617 connector = obj_to_connector(obj);
2618
2619 mode = drm_mode_create(dev);
2620 if (!mode) {
2621 ret = -ENOMEM;
2622 goto out;
2623 }
2624
90367bf6
VS		 2625 ret = drm_crtc_convert_umode(mode, umode);
2626 if (ret) {
2627 DRM_DEBUG_KMS("Invalid mode\n");
2628 drm_mode_destroy(dev, mode);
2629 goto out;
2630 }
f453ba04 2631
1dd6c8bd 2632 drm_mode_attachmode(dev, connector, mode);
f453ba04
DA		 2633out:
2634 mutex_unlock(&dev->mode_config.mutex);
2635 return ret;
2636}
2637
2638
2639/**
2640 * drm_fb_detachmode - Detach a user specified mode from an connector
2641 * @inode: inode from the ioctl
2642 * @filp: file * from the ioctl
2643 * @cmd: cmd from ioctl
2644 * @arg: arg from ioctl
2645 *
2646 * Called by the user via ioctl.
2647 *
2648 * RETURNS:
2649 * Zero on success, errno on failure.
2650 */
2651int drm_mode_detachmode_ioctl(struct drm_device *dev,
2652 void *data, struct drm_file *file_priv)
2653{
2654 struct drm_mode_object *obj;
2655 struct drm_mode_mode_cmd *mode_cmd = data;
2656 struct drm_connector *connector;
2657 struct drm_display_mode mode;
2658 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
4a1b0714 2659 int ret;
f453ba04 2660
fb3b06c8
DA		 2661 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2662 return -EINVAL;
2663
f453ba04
DA		 2664 mutex_lock(&dev->mode_config.mutex);
2665
2666 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2667 if (!obj) {
2668 ret = -EINVAL;
2669 goto out;
2670 }
2671 connector = obj_to_connector(obj);
2672
90367bf6
VS		 2673 ret = drm_crtc_convert_umode(&mode, umode);
2674 if (ret) {
2675 DRM_DEBUG_KMS("Invalid mode\n");
2676 goto out;
2677 }
2678
f453ba04
DA		 2679 ret = drm_mode_detachmode(dev, connector, &mode);
2680out:
2681 mutex_unlock(&dev->mode_config.mutex);
2682 return ret;
2683}
2684
2685struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2686 const char *name, int num_values)
2687{
2688 struct drm_property *property = NULL;
6bfc56aa 2689 int ret;
f453ba04
DA		 2690
2691 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2692 if (!property)
2693 return NULL;
2694
2695 if (num_values) {
2696 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2697 if (!property->values)
2698 goto fail;
2699 }
2700
6bfc56aa
VS		 2701 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2702 if (ret)
2703 goto fail;
2704
f453ba04
DA		 2705 property->flags = flags;
2706 property->num_values = num_values;
2707 INIT_LIST_HEAD(&property->enum_blob_list);
2708
471dd2ef 2709 if (name) {
f453ba04 2710 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 2711 property->name[DRM_PROP_NAME_LEN-1] = '\0';
2712 }
f453ba04
DA		 2713
2714 list_add_tail(&property->head, &dev->mode_config.property_list);
2715 return property;
2716fail:
6bfc56aa 2717 kfree(property->values);
f453ba04
DA		 2718 kfree(property);
2719 return NULL;
2720}
2721EXPORT_SYMBOL(drm_property_create);
2722
4a67d391
SH		 2723struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
2724 const char *name,
2725 const struct drm_prop_enum_list *props,
2726 int num_values)
2727{
2728 struct drm_property *property;
2729 int i, ret;
2730
2731 flags |= DRM_MODE_PROP_ENUM;
2732
2733 property = drm_property_create(dev, flags, name, num_values);
2734 if (!property)
2735 return NULL;
2736
2737 for (i = 0; i < num_values; i++) {
2738 ret = drm_property_add_enum(property, i,
2739 props[i].type,
2740 props[i].name);
2741 if (ret) {
2742 drm_property_destroy(dev, property);
2743 return NULL;
2744 }
2745 }
2746
2747 return property;
2748}
2749EXPORT_SYMBOL(drm_property_create_enum);
2750
d9bc3c02
SH		 2751struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
2752 const char *name,
2753 uint64_t min, uint64_t max)
2754{
2755 struct drm_property *property;
2756
2757 flags |= DRM_MODE_PROP_RANGE;
2758
2759 property = drm_property_create(dev, flags, name, 2);
2760 if (!property)
2761 return NULL;
2762
2763 property->values[0] = min;
2764 property->values[1] = max;
2765
2766 return property;
2767}
2768EXPORT_SYMBOL(drm_property_create_range);
2769
f453ba04
DA		 2770int drm_property_add_enum(struct drm_property *property, int index,
2771 uint64_t value, const char *name)
2772{
2773 struct drm_property_enum *prop_enum;
2774
2775 if (!(property->flags & DRM_MODE_PROP_ENUM))
2776 return -EINVAL;
2777
2778 if (!list_empty(&property->enum_blob_list)) {
2779 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2780 if (prop_enum->value == value) {
2781 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2782 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2783 return 0;
2784 }
2785 }
2786 }
2787
2788 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2789 if (!prop_enum)
2790 return -ENOMEM;
2791
2792 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2793 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2794 prop_enum->value = value;
2795
2796 property->values[index] = value;
2797 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2798 return 0;
2799}
2800EXPORT_SYMBOL(drm_property_add_enum);
2801
2802void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2803{
2804 struct drm_property_enum *prop_enum, *pt;
2805
2806 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2807 list_del(&prop_enum->head);
2808 kfree(prop_enum);
2809 }
2810
2811 if (property->num_values)
2812 kfree(property->values);
2813 drm_mode_object_put(dev, &property->base);
2814 list_del(&property->head);
2815 kfree(property);
2816}
2817EXPORT_SYMBOL(drm_property_destroy);
2818
afea2ad5 2819void drm_connector_attach_property(struct drm_connector *connector,
f453ba04
DA		 2820 struct drm_property *property, uint64_t init_val)
2821{
0057d8dd 2822 drm_object_attach_property(&connector->base, property, init_val);
f453ba04
DA		 2823}
2824EXPORT_SYMBOL(drm_connector_attach_property);
2825
2826int drm_connector_property_set_value(struct drm_connector *connector,
2827 struct drm_property *property, uint64_t value)
2828{
0057d8dd 2829 return drm_object_property_set_value(&connector->base, property, value);
f453ba04
DA		 2830}
2831EXPORT_SYMBOL(drm_connector_property_set_value);
2832
2833int drm_connector_property_get_value(struct drm_connector *connector,
2834 struct drm_property *property, uint64_t *val)
2835{
0057d8dd 2836 return drm_object_property_get_value(&connector->base, property, val);
f453ba04
DA		 2837}
2838EXPORT_SYMBOL(drm_connector_property_get_value);
2839
c543188a
PZ		 2840void drm_object_attach_property(struct drm_mode_object *obj,
2841 struct drm_property *property,
2842 uint64_t init_val)
2843{
7f88a9be 2844 int count = obj->properties->count;
c543188a 2845
7f88a9be
PZ		 2846 if (count == DRM_OBJECT_MAX_PROPERTY) {
2847 WARN(1, "Failed to attach object property (type: 0x%x). Please "
2848 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
2849 "you see this message on the same object type.\n",
2850 obj->type);
2851 return;
c543188a
PZ		 2852 }
2853
7f88a9be
PZ		 2854 obj->properties->ids[count] = property->base.id;
2855 obj->properties->values[count] = init_val;
2856 obj->properties->count++;
c543188a
PZ		 2857}
2858EXPORT_SYMBOL(drm_object_attach_property);
2859
2860int drm_object_property_set_value(struct drm_mode_object *obj,
2861 struct drm_property *property, uint64_t val)
2862{
2863 int i;
2864
7f88a9be 2865 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 2866 if (obj->properties->ids[i] == property->base.id) {
2867 obj->properties->values[i] = val;
2868 return 0;
2869 }
2870 }
2871
2872 return -EINVAL;
2873}
2874EXPORT_SYMBOL(drm_object_property_set_value);
2875
2876int drm_object_property_get_value(struct drm_mode_object *obj,
2877 struct drm_property *property, uint64_t *val)
2878{
2879 int i;
2880
7f88a9be 2881 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 2882 if (obj->properties->ids[i] == property->base.id) {
2883 *val = obj->properties->values[i];
2884 return 0;
2885 }
2886 }
2887
2888 return -EINVAL;
2889}
2890EXPORT_SYMBOL(drm_object_property_get_value);
2891
f453ba04
DA		 2892int drm_mode_getproperty_ioctl(struct drm_device *dev,
2893 void *data, struct drm_file *file_priv)
2894{
2895 struct drm_mode_object *obj;
2896 struct drm_mode_get_property *out_resp = data;
2897 struct drm_property *property;
2898 int enum_count = 0;
2899 int blob_count = 0;
2900 int value_count = 0;
2901 int ret = 0, i;
2902 int copied;
2903 struct drm_property_enum *prop_enum;
2904 struct drm_mode_property_enum __user *enum_ptr;
2905 struct drm_property_blob *prop_blob;
81f6c7f8 2906 uint32_t __user *blob_id_ptr;
f453ba04
DA		 2907 uint64_t __user *values_ptr;
2908 uint32_t __user *blob_length_ptr;
2909
fb3b06c8
DA		 2910 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2911 return -EINVAL;
2912
f453ba04
DA		 2913 mutex_lock(&dev->mode_config.mutex);
2914 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2915 if (!obj) {
2916 ret = -EINVAL;
2917 goto done;
2918 }
2919 property = obj_to_property(obj);
2920
2921 if (property->flags & DRM_MODE_PROP_ENUM) {
2922 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2923 enum_count++;
2924 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2925 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2926 blob_count++;
2927 }
2928
2929 value_count = property->num_values;
2930
2931 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2932 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2933 out_resp->flags = property->flags;
2934
2935 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 2936 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 2937 for (i = 0; i < value_count; i++) {
2938 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2939 ret = -EFAULT;
2940 goto done;
2941 }
2942 }
2943 }
2944 out_resp->count_values = value_count;
2945
2946 if (property->flags & DRM_MODE_PROP_ENUM) {
2947 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2948 copied = 0;
81f6c7f8 2949 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
f453ba04
DA		 2950 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2951
2952 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2953 ret = -EFAULT;
2954 goto done;
2955 }
2956
2957 if (copy_to_user(&enum_ptr[copied].name,
2958 &prop_enum->name, DRM_PROP_NAME_LEN)) {
2959 ret = -EFAULT;
2960 goto done;
2961 }
2962 copied++;
2963 }
2964 }
2965 out_resp->count_enum_blobs = enum_count;
2966 }
2967
2968 if (property->flags & DRM_MODE_PROP_BLOB) {
2969 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2970 copied = 0;
81f6c7f8
VS		 2971 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
2972 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 2973
2974 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2975 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2976 ret = -EFAULT;
2977 goto done;
2978 }
2979
2980 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2981 ret = -EFAULT;
2982 goto done;
2983 }
2984
2985 copied++;
2986 }
2987 }
2988 out_resp->count_enum_blobs = blob_count;
2989 }
2990done:
2991 mutex_unlock(&dev->mode_config.mutex);
2992 return ret;
2993}
2994
2995static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2996 void *data)
2997{
2998 struct drm_property_blob *blob;
6bfc56aa 2999 int ret;
f453ba04
DA		 3000
3001 if (!length || !data)
3002 return NULL;
3003
3004 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3005 if (!blob)
3006 return NULL;
3007
6bfc56aa
VS		 3008 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3009 if (ret) {
3010 kfree(blob);
3011 return NULL;
3012 }
3013
f453ba04
DA		 3014 blob->length = length;
3015
3016 memcpy(blob->data, data, length);
3017
f453ba04
DA		 3018 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3019 return blob;
3020}
3021
3022static void drm_property_destroy_blob(struct drm_device *dev,
3023 struct drm_property_blob *blob)
3024{
3025 drm_mode_object_put(dev, &blob->base);
3026 list_del(&blob->head);
3027 kfree(blob);
3028}
3029
3030int drm_mode_getblob_ioctl(struct drm_device *dev,
3031 void *data, struct drm_file *file_priv)
3032{
3033 struct drm_mode_object *obj;
3034 struct drm_mode_get_blob *out_resp = data;
3035 struct drm_property_blob *blob;
3036 int ret = 0;
81f6c7f8 3037 void __user *blob_ptr;
f453ba04 3038
fb3b06c8
DA		 3039 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3040 return -EINVAL;
3041
f453ba04
DA		 3042 mutex_lock(&dev->mode_config.mutex);
3043 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
3044 if (!obj) {
3045 ret = -EINVAL;
3046 goto done;
3047 }
3048 blob = obj_to_blob(obj);
3049
3050 if (out_resp->length == blob->length) {
81f6c7f8 3051 blob_ptr = (void __user *)(unsigned long)out_resp->data;
f453ba04
DA		 3052 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3053 ret = -EFAULT;
3054 goto done;
3055 }
3056 }
3057 out_resp->length = blob->length;
3058
3059done:
3060 mutex_unlock(&dev->mode_config.mutex);
3061 return ret;
3062}
3063
3064int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3065 struct edid *edid)
3066{
3067 struct drm_device *dev = connector->dev;
4a1b0714 3068 int ret, size;
f453ba04
DA		 3069
3070 if (connector->edid_blob_ptr)
3071 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3072
3073 /* Delete edid, when there is none. */
3074 if (!edid) {
3075 connector->edid_blob_ptr = NULL;
3076 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
3077 return ret;
3078 }
3079
7466f4cc
AJ		 3080 size = EDID_LENGTH * (1 + edid->extensions);
3081 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3082 size, edid);
f453ba04
DA		 3083
3084 ret = drm_connector_property_set_value(connector,
3085 dev->mode_config.edid_property,
3086 connector->edid_blob_ptr->base.id);
3087
3088 return ret;
3089}
3090EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3091
26a34815
PZ		 3092static bool drm_property_change_is_valid(struct drm_property *property,
3093 __u64 value)
3094{
3095 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3096 return false;
3097 if (property->flags & DRM_MODE_PROP_RANGE) {
3098 if (value < property->values[0] || value > property->values[1])
3099 return false;
3100 return true;
3101 } else {
3102 int i;
3103 for (i = 0; i < property->num_values; i++)
3104 if (property->values[i] == value)
3105 return true;
3106 return false;
3107 }
3108}
3109
f453ba04
DA		 3110int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3111 void *data, struct drm_file *file_priv)
3112{
0057d8dd
PZ		 3113 struct drm_mode_connector_set_property *conn_set_prop = data;
3114 struct drm_mode_obj_set_property obj_set_prop = {
3115 .value = conn_set_prop->value,
3116 .prop_id = conn_set_prop->prop_id,
3117 .obj_id = conn_set_prop->connector_id,
3118 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3119 };
fb3b06c8 3120
0057d8dd
PZ		 3121 /* It does all the locking and checking we need */
3122 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 3123}
3124
c543188a
PZ		 3125static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3126 struct drm_property *property,
3127 uint64_t value)
3128{
3129 int ret = -EINVAL;
3130 struct drm_connector *connector = obj_to_connector(obj);
3131
3132 /* Do DPMS ourselves */
3133 if (property == connector->dev->mode_config.dpms_property) {
3134 if (connector->funcs->dpms)
3135 (*connector->funcs->dpms)(connector, (int)value);
3136 ret = 0;
3137 } else if (connector->funcs->set_property)
3138 ret = connector->funcs->set_property(connector, property, value);
3139
3140 /* store the property value if successful */
3141 if (!ret)
3142 drm_connector_property_set_value(connector, property, value);
3143 return ret;
3144}
3145
bffd9de0
PZ		 3146static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3147 struct drm_property *property,
3148 uint64_t value)
3149{
3150 int ret = -EINVAL;
3151 struct drm_crtc *crtc = obj_to_crtc(obj);
3152
3153 if (crtc->funcs->set_property)
3154 ret = crtc->funcs->set_property(crtc, property, value);
3155 if (!ret)
3156 drm_object_property_set_value(obj, property, value);
3157
3158 return ret;
3159}
3160
c543188a
PZ		 3161int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3162 struct drm_file *file_priv)
3163{
3164 struct drm_mode_obj_get_properties *arg = data;
3165 struct drm_mode_object *obj;
3166 int ret = 0;
3167 int i;
3168 int copied = 0;
3169 int props_count = 0;
3170 uint32_t __user *props_ptr;
3171 uint64_t __user *prop_values_ptr;
3172
3173 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3174 return -EINVAL;
3175
3176 mutex_lock(&dev->mode_config.mutex);
3177
3178 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3179 if (!obj) {
3180 ret = -EINVAL;
3181 goto out;
3182 }
3183 if (!obj->properties) {
3184 ret = -EINVAL;
3185 goto out;
3186 }
3187
7f88a9be 3188 props_count = obj->properties->count;
c543188a
PZ		 3189
3190 /* This ioctl is called twice, once to determine how much space is
3191 * needed, and the 2nd time to fill it. */
3192 if ((arg->count_props >= props_count) && props_count) {
3193 copied = 0;
3194 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3195 prop_values_ptr = (uint64_t __user *)(unsigned long)
3196 (arg->prop_values_ptr);
3197 for (i = 0; i < props_count; i++) {
3198 if (put_user(obj->properties->ids[i],
3199 props_ptr + copied)) {
3200 ret = -EFAULT;
3201 goto out;
3202 }
3203 if (put_user(obj->properties->values[i],
3204 prop_values_ptr + copied)) {
3205 ret = -EFAULT;
3206 goto out;
3207 }
3208 copied++;
3209 }
3210 }
3211 arg->count_props = props_count;
3212out:
3213 mutex_unlock(&dev->mode_config.mutex);
3214 return ret;
3215}
3216
3217int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3218 struct drm_file *file_priv)
3219{
3220 struct drm_mode_obj_set_property *arg = data;
3221 struct drm_mode_object *arg_obj;
3222 struct drm_mode_object *prop_obj;
3223 struct drm_property *property;
3224 int ret = -EINVAL;
3225 int i;
3226
3227 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3228 return -EINVAL;
3229
3230 mutex_lock(&dev->mode_config.mutex);
3231
3232 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3233 if (!arg_obj)
3234 goto out;
3235 if (!arg_obj->properties)
3236 goto out;
3237
7f88a9be 3238 for (i = 0; i < arg_obj->properties->count; i++)
c543188a
PZ		 3239 if (arg_obj->properties->ids[i] == arg->prop_id)
3240 break;
3241
7f88a9be 3242 if (i == arg_obj->properties->count)
c543188a
PZ		 3243 goto out;
3244
3245 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3246 DRM_MODE_OBJECT_PROPERTY);
3247 if (!prop_obj)
3248 goto out;
3249 property = obj_to_property(prop_obj);
3250
3251 if (!drm_property_change_is_valid(property, arg->value))
3252 goto out;
3253
3254 switch (arg_obj->type) {
3255 case DRM_MODE_OBJECT_CONNECTOR:
3256 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3257 arg->value);
3258 break;
bffd9de0
PZ		 3259 case DRM_MODE_OBJECT_CRTC:
3260 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3261 break;
c543188a
PZ		 3262 }
3263
3264out:
3265 mutex_unlock(&dev->mode_config.mutex);
3266 return ret;
3267}
3268
f453ba04
DA		 3269int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3270 struct drm_encoder *encoder)
3271{
3272 int i;
3273
3274 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3275 if (connector->encoder_ids[i] == 0) {
3276 connector->encoder_ids[i] = encoder->base.id;
3277 return 0;
3278 }
3279 }
3280 return -ENOMEM;
3281}
3282EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3283
3284void drm_mode_connector_detach_encoder(struct drm_connector *connector,
3285 struct drm_encoder *encoder)
3286{
3287 int i;
3288 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3289 if (connector->encoder_ids[i] == encoder->base.id) {
3290 connector->encoder_ids[i] = 0;
3291 if (connector->encoder == encoder)
3292 connector->encoder = NULL;
3293 break;
3294 }
3295 }
3296}
3297EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
3298
4cae5b84 3299int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
f453ba04
DA		 3300 int gamma_size)
3301{
3302 crtc->gamma_size = gamma_size;
3303
3304 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
3305 if (!crtc->gamma_store) {
3306 crtc->gamma_size = 0;
4cae5b84 3307 return -ENOMEM;
f453ba04
DA		 3308 }
3309
4cae5b84 3310 return 0;
f453ba04
DA		 3311}
3312EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3313
3314int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3315 void *data, struct drm_file *file_priv)
3316{
3317 struct drm_mode_crtc_lut *crtc_lut = data;
3318 struct drm_mode_object *obj;
3319 struct drm_crtc *crtc;
3320 void *r_base, *g_base, *b_base;
3321 int size;
3322 int ret = 0;
3323
fb3b06c8
DA		 3324 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3325 return -EINVAL;
3326
f453ba04
DA		 3327 mutex_lock(&dev->mode_config.mutex);
3328 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3329 if (!obj) {
3330 ret = -EINVAL;
3331 goto out;
3332 }
3333 crtc = obj_to_crtc(obj);
3334
3335 /* memcpy into gamma store */
3336 if (crtc_lut->gamma_size != crtc->gamma_size) {
3337 ret = -EINVAL;
3338 goto out;
3339 }
3340
3341 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3342 r_base = crtc->gamma_store;
3343 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
3344 ret = -EFAULT;
3345 goto out;
3346 }
3347
3348 g_base = r_base + size;
3349 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
3350 ret = -EFAULT;
3351 goto out;
3352 }
3353
3354 b_base = g_base + size;
3355 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
3356 ret = -EFAULT;
3357 goto out;
3358 }
3359
7203425a 3360 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 3361
3362out:
3363 mutex_unlock(&dev->mode_config.mutex);
3364 return ret;
3365
3366}
3367
3368int drm_mode_gamma_get_ioctl(struct drm_device *dev,
3369 void *data, struct drm_file *file_priv)
3370{
3371 struct drm_mode_crtc_lut *crtc_lut = data;
3372 struct drm_mode_object *obj;
3373 struct drm_crtc *crtc;
3374 void *r_base, *g_base, *b_base;
3375 int size;
3376 int ret = 0;
3377
fb3b06c8
DA		 3378 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3379 return -EINVAL;
3380
f453ba04
DA		 3381 mutex_lock(&dev->mode_config.mutex);
3382 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3383 if (!obj) {
3384 ret = -EINVAL;
3385 goto out;
3386 }
3387 crtc = obj_to_crtc(obj);
3388
3389 /* memcpy into gamma store */
3390 if (crtc_lut->gamma_size != crtc->gamma_size) {
3391 ret = -EINVAL;
3392 goto out;
3393 }
3394
3395 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3396 r_base = crtc->gamma_store;
3397 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
3398 ret = -EFAULT;
3399 goto out;
3400 }
3401
3402 g_base = r_base + size;
3403 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
3404 ret = -EFAULT;
3405 goto out;
3406 }
3407
3408 b_base = g_base + size;
3409 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
3410 ret = -EFAULT;
3411 goto out;
3412 }
3413out:
3414 mutex_unlock(&dev->mode_config.mutex);
3415 return ret;
3416}
d91d8a3f
KH		 3417
3418int drm_mode_page_flip_ioctl(struct drm_device *dev,
3419 void *data, struct drm_file *file_priv)
3420{
3421 struct drm_mode_crtc_page_flip *page_flip = data;
3422 struct drm_mode_object *obj;
3423 struct drm_crtc *crtc;
3424 struct drm_framebuffer *fb;
3425 struct drm_pending_vblank_event *e = NULL;
3426 unsigned long flags;
3427 int ret = -EINVAL;
3428
3429 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
3430 page_flip->reserved != 0)
3431 return -EINVAL;
3432
3433 mutex_lock(&dev->mode_config.mutex);
3434 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
3435 if (!obj)
3436 goto out;
3437 crtc = obj_to_crtc(obj);
3438
90c1efdd
CW		 3439 if (crtc->fb == NULL) {
3440 /* The framebuffer is currently unbound, presumably
3441 * due to a hotplug event, that userspace has not
3442 * yet discovered.
3443 */
3444 ret = -EBUSY;
3445 goto out;
3446 }
3447
d91d8a3f
KH		 3448 if (crtc->funcs->page_flip == NULL)
3449 goto out;
3450
3451 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
3452 if (!obj)
3453 goto out;
3454 fb = obj_to_fb(obj);
3455
5f61bb42
VS		 3456 if (crtc->mode.hdisplay > fb->width ||
3457 crtc->mode.vdisplay > fb->height ||
3458 crtc->x > fb->width - crtc->mode.hdisplay ||
3459 crtc->y > fb->height - crtc->mode.vdisplay) {
3460 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d.\n",
3461 fb->width, fb->height,
3462 crtc->mode.hdisplay, crtc->mode.vdisplay,
3463 crtc->x, crtc->y);
3464 ret = -ENOSPC;
3465 goto out;
3466 }
3467
d91d8a3f
KH		 3468 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3469 ret = -ENOMEM;
3470 spin_lock_irqsave(&dev->event_lock, flags);
3471 if (file_priv->event_space < sizeof e->event) {
3472 spin_unlock_irqrestore(&dev->event_lock, flags);
3473 goto out;
3474 }
3475 file_priv->event_space -= sizeof e->event;
3476 spin_unlock_irqrestore(&dev->event_lock, flags);
3477
3478 e = kzalloc(sizeof *e, GFP_KERNEL);
3479 if (e == NULL) {
3480 spin_lock_irqsave(&dev->event_lock, flags);
3481 file_priv->event_space += sizeof e->event;
3482 spin_unlock_irqrestore(&dev->event_lock, flags);
3483 goto out;
3484 }
3485
7bd4d7be 3486 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
d91d8a3f
KH		 3487 e->event.base.length = sizeof e->event;
3488 e->event.user_data = page_flip->user_data;
3489 e->base.event = &e->event.base;
3490 e->base.file_priv = file_priv;
3491 e->base.destroy =
3492 (void (*) (struct drm_pending_event *)) kfree;
3493 }
3494
3495 ret = crtc->funcs->page_flip(crtc, fb, e);
3496 if (ret) {
aef6a7ee
JS		 3497 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3498 spin_lock_irqsave(&dev->event_lock, flags);
3499 file_priv->event_space += sizeof e->event;
3500 spin_unlock_irqrestore(&dev->event_lock, flags);
3501 kfree(e);
3502 }
d91d8a3f
KH		 3503 }
3504
3505out:
3506 mutex_unlock(&dev->mode_config.mutex);
3507 return ret;
3508}
eb033556
CW		 3509
3510void drm_mode_config_reset(struct drm_device *dev)
3511{
3512 struct drm_crtc *crtc;
3513 struct drm_encoder *encoder;
3514 struct drm_connector *connector;
3515
3516 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
3517 if (crtc->funcs->reset)
3518 crtc->funcs->reset(crtc);
3519
3520 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
3521 if (encoder->funcs->reset)
3522 encoder->funcs->reset(encoder);
3523
3524 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
3525 if (connector->funcs->reset)
3526 connector->funcs->reset(connector);
3527}
3528EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b
DA		 3529
3530int drm_mode_create_dumb_ioctl(struct drm_device *dev,
3531 void *data, struct drm_file *file_priv)
3532{
3533 struct drm_mode_create_dumb *args = data;
3534
3535 if (!dev->driver->dumb_create)
3536 return -ENOSYS;
3537 return dev->driver->dumb_create(file_priv, dev, args);
3538}
3539
3540int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
3541 void *data, struct drm_file *file_priv)
3542{
3543 struct drm_mode_map_dumb *args = data;
3544
3545 /* call driver ioctl to get mmap offset */
3546 if (!dev->driver->dumb_map_offset)
3547 return -ENOSYS;
3548
3549 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
3550}
3551
3552int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
3553 void *data, struct drm_file *file_priv)
3554{
3555 struct drm_mode_destroy_dumb *args = data;
3556
3557 if (!dev->driver->dumb_destroy)
3558 return -ENOSYS;
3559
3560 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
3561}
248dbc23
DA		 3562
3563/*
3564 * Just need to support RGB formats here for compat with code that doesn't
3565 * use pixel formats directly yet.
3566 */
3567void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
3568 int *bpp)
3569{
3570 switch (format) {
04b3924d
VS		 3571 case DRM_FORMAT_RGB332:
3572 case DRM_FORMAT_BGR233:
248dbc23
DA		 3573 *depth = 8;
3574 *bpp = 8;
3575 break;
04b3924d
VS		 3576 case DRM_FORMAT_XRGB1555:
3577 case DRM_FORMAT_XBGR1555:
3578 case DRM_FORMAT_RGBX5551:
3579 case DRM_FORMAT_BGRX5551:
3580 case DRM_FORMAT_ARGB1555:
3581 case DRM_FORMAT_ABGR1555:
3582 case DRM_FORMAT_RGBA5551:
3583 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 3584 *depth = 15;
3585 *bpp = 16;
3586 break;
04b3924d
VS		 3587 case DRM_FORMAT_RGB565:
3588 case DRM_FORMAT_BGR565:
248dbc23
DA		 3589 *depth = 16;
3590 *bpp = 16;
3591 break;
04b3924d
VS		 3592 case DRM_FORMAT_RGB888:
3593 case DRM_FORMAT_BGR888:
3594 *depth = 24;
3595 *bpp = 24;
3596 break;
3597 case DRM_FORMAT_XRGB8888:
3598 case DRM_FORMAT_XBGR8888:
3599 case DRM_FORMAT_RGBX8888:
3600 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 3601 *depth = 24;
3602 *bpp = 32;
3603 break;
04b3924d
VS		 3604 case DRM_FORMAT_XRGB2101010:
3605 case DRM_FORMAT_XBGR2101010:
3606 case DRM_FORMAT_RGBX1010102:
3607 case DRM_FORMAT_BGRX1010102:
3608 case DRM_FORMAT_ARGB2101010:
3609 case DRM_FORMAT_ABGR2101010:
3610 case DRM_FORMAT_RGBA1010102:
3611 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 3612 *depth = 30;
3613 *bpp = 32;
3614 break;
04b3924d
VS		 3615 case DRM_FORMAT_ARGB8888:
3616 case DRM_FORMAT_ABGR8888:
3617 case DRM_FORMAT_RGBA8888:
3618 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 3619 *depth = 32;
3620 *bpp = 32;
3621 break;
3622 default:
3623 DRM_DEBUG_KMS("unsupported pixel format\n");
3624 *depth = 0;
3625 *bpp = 0;
3626 break;
3627 }
3628}
3629EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 3630
3631/**
3632 * drm_format_num_planes - get the number of planes for format
3633 * @format: pixel format (DRM_FORMAT_*)
3634 *
3635 * RETURNS:
3636 * The number of planes used by the specified pixel format.
3637 */
3638int drm_format_num_planes(uint32_t format)
3639{
3640 switch (format) {
3641 case DRM_FORMAT_YUV410:
3642 case DRM_FORMAT_YVU410:
3643 case DRM_FORMAT_YUV411:
3644 case DRM_FORMAT_YVU411:
3645 case DRM_FORMAT_YUV420:
3646 case DRM_FORMAT_YVU420:
3647 case DRM_FORMAT_YUV422:
3648 case DRM_FORMAT_YVU422:
3649 case DRM_FORMAT_YUV444:
3650 case DRM_FORMAT_YVU444:
3651 return 3;
3652 case DRM_FORMAT_NV12:
3653 case DRM_FORMAT_NV21:
3654 case DRM_FORMAT_NV16:
3655 case DRM_FORMAT_NV61:
3656 return 2;
3657 default:
3658 return 1;
3659 }
3660}
3661EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 3662
3663/**
3664 * drm_format_plane_cpp - determine the bytes per pixel value
3665 * @format: pixel format (DRM_FORMAT_*)
3666 * @plane: plane index
3667 *
3668 * RETURNS:
3669 * The bytes per pixel value for the specified plane.
3670 */
3671int drm_format_plane_cpp(uint32_t format, int plane)
3672{
3673 unsigned int depth;
3674 int bpp;
3675
3676 if (plane >= drm_format_num_planes(format))
3677 return 0;
3678
3679 switch (format) {
3680 case DRM_FORMAT_YUYV:
3681 case DRM_FORMAT_YVYU:
3682 case DRM_FORMAT_UYVY:
3683 case DRM_FORMAT_VYUY:
3684 return 2;
3685 case DRM_FORMAT_NV12:
3686 case DRM_FORMAT_NV21:
3687 case DRM_FORMAT_NV16:
3688 case DRM_FORMAT_NV61:
3689 return plane ? 2 : 1;
3690 case DRM_FORMAT_YUV410:
3691 case DRM_FORMAT_YVU410:
3692 case DRM_FORMAT_YUV411:
3693 case DRM_FORMAT_YVU411:
3694 case DRM_FORMAT_YUV420:
3695 case DRM_FORMAT_YVU420:
3696 case DRM_FORMAT_YUV422:
3697 case DRM_FORMAT_YVU422:
3698 case DRM_FORMAT_YUV444:
3699 case DRM_FORMAT_YVU444:
3700 return 1;
3701 default:
3702 drm_fb_get_bpp_depth(format, &depth, &bpp);
3703 return bpp >> 3;
3704 }
3705}
3706EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 3707
3708/**
3709 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
3710 * @format: pixel format (DRM_FORMAT_*)
3711 *
3712 * RETURNS:
3713 * The horizontal chroma subsampling factor for the
3714 * specified pixel format.
3715 */
3716int drm_format_horz_chroma_subsampling(uint32_t format)
3717{
3718 switch (format) {
3719 case DRM_FORMAT_YUV411:
3720 case DRM_FORMAT_YVU411:
3721 case DRM_FORMAT_YUV410:
3722 case DRM_FORMAT_YVU410:
3723 return 4;
3724 case DRM_FORMAT_YUYV:
3725 case DRM_FORMAT_YVYU:
3726 case DRM_FORMAT_UYVY:
3727 case DRM_FORMAT_VYUY:
3728 case DRM_FORMAT_NV12:
3729 case DRM_FORMAT_NV21:
3730 case DRM_FORMAT_NV16:
3731 case DRM_FORMAT_NV61:
3732 case DRM_FORMAT_YUV422:
3733 case DRM_FORMAT_YVU422:
3734 case DRM_FORMAT_YUV420:
3735 case DRM_FORMAT_YVU420:
3736 return 2;
3737 default:
3738 return 1;
3739 }
3740}
3741EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
3742
3743/**
3744 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
3745 * @format: pixel format (DRM_FORMAT_*)
3746 *
3747 * RETURNS:
3748 * The vertical chroma subsampling factor for the
3749 * specified pixel format.
3750 */
3751int drm_format_vert_chroma_subsampling(uint32_t format)
3752{
3753 switch (format) {
3754 case DRM_FORMAT_YUV410:
3755 case DRM_FORMAT_YVU410:
3756 return 4;
3757 case DRM_FORMAT_YUV420:
3758 case DRM_FORMAT_YVU420:
3759 case DRM_FORMAT_NV12:
3760 case DRM_FORMAT_NV21:
3761 return 2;
3762 default:
3763 return 1;
3764 }
3765}
3766EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
kernel source for telekom puls (alcatel/mediatek)