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-rw-r--r--drivers/gpu/drm/drm_crtc.c2446
1 files changed, 2446 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
new file mode 100644
index 000000000000..5b2cbb778162
--- /dev/null
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -0,0 +1,2446 @@
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>
33#include "drm.h"
34#include "drmP.h"
35#include "drm_crtc.h"
36
37struct drm_prop_enum_list {
38 int type;
39 char *name;
40};
41
42/* Avoid boilerplate. I'm tired of typing. */
43#define DRM_ENUM_NAME_FN(fnname, list) \
44 char *fnname(int val) \
45 { \
46 int i; \
47 for (i = 0; i < ARRAY_SIZE(list); i++) { \
48 if (list[i].type == val) \
49 return list[i].name; \
50 } \
51 return "(unknown)"; \
52 }
53
54/*
55 * Global properties
56 */
57static struct drm_prop_enum_list drm_dpms_enum_list[] =
58{ { DRM_MODE_DPMS_ON, "On" },
59 { DRM_MODE_DPMS_STANDBY, "Standby" },
60 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
61 { DRM_MODE_DPMS_OFF, "Off" }
62};
63
64DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
65
66/*
67 * Optional properties
68 */
69static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
70{
71 { DRM_MODE_SCALE_NON_GPU, "Non-GPU" },
72 { DRM_MODE_SCALE_FULLSCREEN, "Fullscreen" },
73 { DRM_MODE_SCALE_NO_SCALE, "No scale" },
74 { DRM_MODE_SCALE_ASPECT, "Aspect" },
75};
76
77static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
78{
79 { DRM_MODE_DITHERING_OFF, "Off" },
80 { DRM_MODE_DITHERING_ON, "On" },
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 */
111};
112
113DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
114
115static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
116{
117 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
118 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
119 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
121};
122
123DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
124 drm_tv_subconnector_enum_list)
125
126struct drm_conn_prop_enum_list {
127 int type;
128 char *name;
129 int count;
130};
131
132/*
133 * Connector and encoder types.
134 */
135static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
136{ { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
137 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
138 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
139 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
140 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
141 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
142 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
143 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
144 { DRM_MODE_CONNECTOR_Component, "Component", 0 },
145 { DRM_MODE_CONNECTOR_9PinDIN, "9-pin DIN", 0 },
146 { DRM_MODE_CONNECTOR_DisplayPort, "DisplayPort", 0 },
147 { DRM_MODE_CONNECTOR_HDMIA, "HDMI Type A", 0 },
148 { DRM_MODE_CONNECTOR_HDMIB, "HDMI Type B", 0 },
149};
150
151static struct drm_prop_enum_list drm_encoder_enum_list[] =
152{ { DRM_MODE_ENCODER_NONE, "None" },
153 { DRM_MODE_ENCODER_DAC, "DAC" },
154 { DRM_MODE_ENCODER_TMDS, "TMDS" },
155 { DRM_MODE_ENCODER_LVDS, "LVDS" },
156 { DRM_MODE_ENCODER_TVDAC, "TV" },
157};
158
159char *drm_get_encoder_name(struct drm_encoder *encoder)
160{
161 static char buf[32];
162
163 snprintf(buf, 32, "%s-%d",
164 drm_encoder_enum_list[encoder->encoder_type].name,
165 encoder->base.id);
166 return buf;
167}
168
169char *drm_get_connector_name(struct drm_connector *connector)
170{
171 static char buf[32];
172
173 snprintf(buf, 32, "%s-%d",
174 drm_connector_enum_list[connector->connector_type].name,
175 connector->connector_type_id);
176 return buf;
177}
178EXPORT_SYMBOL(drm_get_connector_name);
179
180char *drm_get_connector_status_name(enum drm_connector_status status)
181{
182 if (status == connector_status_connected)
183 return "connected";
184 else if (status == connector_status_disconnected)
185 return "disconnected";
186 else
187 return "unknown";
188}
189
190/**
191 * drm_mode_object_get - allocate a new identifier
192 * @dev: DRM device
193 * @ptr: object pointer, used to generate unique ID
194 * @type: object type
195 *
196 * LOCKING:
197 * Caller must hold DRM mode_config lock.
198 *
199 * Create a unique identifier based on @ptr in @dev's identifier space. Used
200 * for tracking modes, CRTCs and connectors.
201 *
202 * RETURNS:
203 * New unique (relative to other objects in @dev) integer identifier for the
204 * object.
205 */
206static int drm_mode_object_get(struct drm_device *dev,
207 struct drm_mode_object *obj, uint32_t obj_type)
208{
209 int new_id = 0;
210 int ret;
211
212 WARN(!mutex_is_locked(&dev->mode_config.mutex),
213 "%s called w/o mode_config lock\n", __func__);
214again:
215 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
216 DRM_ERROR("Ran out memory getting a mode number\n");
217 return -EINVAL;
218 }
219
220 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
221 if (ret == -EAGAIN)
222 goto again;
223
224 obj->id = new_id;
225 obj->type = obj_type;
226 return 0;
227}
228
229/**
230 * drm_mode_object_put - free an identifer
231 * @dev: DRM device
232 * @id: ID to free
233 *
234 * LOCKING:
235 * Caller must hold DRM mode_config lock.
236 *
237 * Free @id from @dev's unique identifier pool.
238 */
239static void drm_mode_object_put(struct drm_device *dev,
240 struct drm_mode_object *object)
241{
242 idr_remove(&dev->mode_config.crtc_idr, object->id);
243}
244
245void *drm_mode_object_find(struct drm_device *dev, uint32_t id, uint32_t type)
246{
247 struct drm_mode_object *obj;
248
249 obj = idr_find(&dev->mode_config.crtc_idr, id);
250 if (!obj || (obj->type != type) || (obj->id != id))
251 return NULL;
252
253 return obj;
254}
255EXPORT_SYMBOL(drm_mode_object_find);
256
257/**
258 * drm_crtc_from_fb - find the CRTC structure associated with an fb
259 * @dev: DRM device
260 * @fb: framebuffer in question
261 *
262 * LOCKING:
263 * Caller must hold mode_config lock.
264 *
265 * Find CRTC in the mode_config structure that matches @fb.
266 *
267 * RETURNS:
268 * Pointer to the CRTC or NULL if it wasn't found.
269 */
270struct drm_crtc *drm_crtc_from_fb(struct drm_device *dev,
271 struct drm_framebuffer *fb)
272{
273 struct drm_crtc *crtc;
274
275 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
276 if (crtc->fb == fb)
277 return crtc;
278 }
279 return NULL;
280}
281
282/**
283 * drm_framebuffer_init - initialize a framebuffer
284 * @dev: DRM device
285 *
286 * LOCKING:
287 * Caller must hold mode config lock.
288 *
289 * Allocates an ID for the framebuffer's parent mode object, sets its mode
290 * functions & device file and adds it to the master fd list.
291 *
292 * RETURNS:
293 * Zero on success, error code on falure.
294 */
295int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
296 const struct drm_framebuffer_funcs *funcs)
297{
298 int ret;
299
300 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
301 if (ret) {
302 return ret;
303 }
304
305 fb->dev = dev;
306 fb->funcs = funcs;
307 dev->mode_config.num_fb++;
308 list_add(&fb->head, &dev->mode_config.fb_list);
309
310 return 0;
311}
312EXPORT_SYMBOL(drm_framebuffer_init);
313
314/**
315 * drm_framebuffer_cleanup - remove a framebuffer object
316 * @fb: framebuffer to remove
317 *
318 * LOCKING:
319 * Caller must hold mode config lock.
320 *
321 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
322 * it, setting it to NULL.
323 */
324void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
325{
326 struct drm_device *dev = fb->dev;
327 struct drm_crtc *crtc;
328
329 /* remove from any CRTC */
330 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
331 if (crtc->fb == fb)
332 crtc->fb = NULL;
333 }
334
335 drm_mode_object_put(dev, &fb->base);
336 list_del(&fb->head);
337 dev->mode_config.num_fb--;
338}
339EXPORT_SYMBOL(drm_framebuffer_cleanup);
340
341/**
342 * drm_crtc_init - Initialise a new CRTC object
343 * @dev: DRM device
344 * @crtc: CRTC object to init
345 * @funcs: callbacks for the new CRTC
346 *
347 * LOCKING:
348 * Caller must hold mode config lock.
349 *
350 * Inits a new object created as base part of an driver crtc object.
351 */
352void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
353 const struct drm_crtc_funcs *funcs)
354{
355 crtc->dev = dev;
356 crtc->funcs = funcs;
357
358 mutex_lock(&dev->mode_config.mutex);
359 drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
360
361 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
362 dev->mode_config.num_crtc++;
363 mutex_unlock(&dev->mode_config.mutex);
364}
365EXPORT_SYMBOL(drm_crtc_init);
366
367/**
368 * drm_crtc_cleanup - Cleans up the core crtc usage.
369 * @crtc: CRTC to cleanup
370 *
371 * LOCKING:
372 * Caller must hold mode config lock.
373 *
374 * Cleanup @crtc. Removes from drm modesetting space
375 * does NOT free object, caller does that.
376 */
377void drm_crtc_cleanup(struct drm_crtc *crtc)
378{
379 struct drm_device *dev = crtc->dev;
380
381 if (crtc->gamma_store) {
382 kfree(crtc->gamma_store);
383 crtc->gamma_store = NULL;
384 }
385
386 drm_mode_object_put(dev, &crtc->base);
387 list_del(&crtc->head);
388 dev->mode_config.num_crtc--;
389}
390EXPORT_SYMBOL(drm_crtc_cleanup);
391
392/**
393 * drm_mode_probed_add - add a mode to a connector's probed mode list
394 * @connector: connector the new mode
395 * @mode: mode data
396 *
397 * LOCKING:
398 * Caller must hold mode config lock.
399 *
400 * Add @mode to @connector's mode list for later use.
401 */
402void drm_mode_probed_add(struct drm_connector *connector,
403 struct drm_display_mode *mode)
404{
405 list_add(&mode->head, &connector->probed_modes);
406}
407EXPORT_SYMBOL(drm_mode_probed_add);
408
409/**
410 * drm_mode_remove - remove and free a mode
411 * @connector: connector list to modify
412 * @mode: mode to remove
413 *
414 * LOCKING:
415 * Caller must hold mode config lock.
416 *
417 * Remove @mode from @connector's mode list, then free it.
418 */
419void drm_mode_remove(struct drm_connector *connector,
420 struct drm_display_mode *mode)
421{
422 list_del(&mode->head);
423 kfree(mode);
424}
425EXPORT_SYMBOL(drm_mode_remove);
426
427/**
428 * drm_connector_init - Init a preallocated connector
429 * @dev: DRM device
430 * @connector: the connector to init
431 * @funcs: callbacks for this connector
432 * @name: user visible name of the connector
433 *
434 * LOCKING:
435 * Caller must hold @dev's mode_config lock.
436 *
437 * Initialises a preallocated connector. Connectors should be
438 * subclassed as part of driver connector objects.
439 */
440void drm_connector_init(struct drm_device *dev,
441 struct drm_connector *connector,
442 const struct drm_connector_funcs *funcs,
443 int connector_type)
444{
445 mutex_lock(&dev->mode_config.mutex);
446
447 connector->dev = dev;
448 connector->funcs = funcs;
449 drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
450 connector->connector_type = connector_type;
451 connector->connector_type_id =
452 ++drm_connector_enum_list[connector_type].count; /* TODO */
453 INIT_LIST_HEAD(&connector->user_modes);
454 INIT_LIST_HEAD(&connector->probed_modes);
455 INIT_LIST_HEAD(&connector->modes);
456 connector->edid_blob_ptr = NULL;
457
458 list_add_tail(&connector->head, &dev->mode_config.connector_list);
459 dev->mode_config.num_connector++;
460
461 drm_connector_attach_property(connector,
462 dev->mode_config.edid_property, 0);
463
464 drm_connector_attach_property(connector,
465 dev->mode_config.dpms_property, 0);
466
467 mutex_unlock(&dev->mode_config.mutex);
468}
469EXPORT_SYMBOL(drm_connector_init);
470
471/**
472 * drm_connector_cleanup - cleans up an initialised connector
473 * @connector: connector to cleanup
474 *
475 * LOCKING:
476 * Caller must hold @dev's mode_config lock.
477 *
478 * Cleans up the connector but doesn't free the object.
479 */
480void drm_connector_cleanup(struct drm_connector *connector)
481{
482 struct drm_device *dev = connector->dev;
483 struct drm_display_mode *mode, *t;
484
485 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
486 drm_mode_remove(connector, mode);
487
488 list_for_each_entry_safe(mode, t, &connector->modes, head)
489 drm_mode_remove(connector, mode);
490
491 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
492 drm_mode_remove(connector, mode);
493
494 mutex_lock(&dev->mode_config.mutex);
495 drm_mode_object_put(dev, &connector->base);
496 list_del(&connector->head);
497 mutex_unlock(&dev->mode_config.mutex);
498}
499EXPORT_SYMBOL(drm_connector_cleanup);
500
501void drm_encoder_init(struct drm_device *dev,
502 struct drm_encoder *encoder,
503 const struct drm_encoder_funcs *funcs,
504 int encoder_type)
505{
506 mutex_lock(&dev->mode_config.mutex);
507
508 encoder->dev = dev;
509
510 drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
511 encoder->encoder_type = encoder_type;
512 encoder->funcs = funcs;
513
514 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
515 dev->mode_config.num_encoder++;
516
517 mutex_unlock(&dev->mode_config.mutex);
518}
519EXPORT_SYMBOL(drm_encoder_init);
520
521void drm_encoder_cleanup(struct drm_encoder *encoder)
522{
523 struct drm_device *dev = encoder->dev;
524 mutex_lock(&dev->mode_config.mutex);
525 drm_mode_object_put(dev, &encoder->base);
526 list_del(&encoder->head);
527 mutex_unlock(&dev->mode_config.mutex);
528}
529EXPORT_SYMBOL(drm_encoder_cleanup);
530
531/**
532 * drm_mode_create - create a new display mode
533 * @dev: DRM device
534 *
535 * LOCKING:
536 * Caller must hold DRM mode_config lock.
537 *
538 * Create a new drm_display_mode, give it an ID, and return it.
539 *
540 * RETURNS:
541 * Pointer to new mode on success, NULL on error.
542 */
543struct drm_display_mode *drm_mode_create(struct drm_device *dev)
544{
545 struct drm_display_mode *nmode;
546
547 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
548 if (!nmode)
549 return NULL;
550
551 drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
552 return nmode;
553}
554EXPORT_SYMBOL(drm_mode_create);
555
556/**
557 * drm_mode_destroy - remove a mode
558 * @dev: DRM device
559 * @mode: mode to remove
560 *
561 * LOCKING:
562 * Caller must hold mode config lock.
563 *
564 * Free @mode's unique identifier, then free it.
565 */
566void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
567{
568 drm_mode_object_put(dev, &mode->base);
569
570 kfree(mode);
571}
572EXPORT_SYMBOL(drm_mode_destroy);
573
574static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
575{
576 struct drm_property *edid;
577 struct drm_property *dpms;
578 int i;
579
580 /*
581 * Standard properties (apply to all connectors)
582 */
583 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
584 DRM_MODE_PROP_IMMUTABLE,
585 "EDID", 0);
586 dev->mode_config.edid_property = edid;
587
588 dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
589 "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
590 for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
591 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
592 drm_dpms_enum_list[i].name);
593 dev->mode_config.dpms_property = dpms;
594
595 return 0;
596}
597
598/**
599 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
600 * @dev: DRM device
601 *
602 * Called by a driver the first time a DVI-I connector is made.
603 */
604int drm_mode_create_dvi_i_properties(struct drm_device *dev)
605{
606 struct drm_property *dvi_i_selector;
607 struct drm_property *dvi_i_subconnector;
608 int i;
609
610 if (dev->mode_config.dvi_i_select_subconnector_property)
611 return 0;
612
613 dvi_i_selector =
614 drm_property_create(dev, DRM_MODE_PROP_ENUM,
615 "select subconnector",
616 ARRAY_SIZE(drm_dvi_i_select_enum_list));
617 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
618 drm_property_add_enum(dvi_i_selector, i,
619 drm_dvi_i_select_enum_list[i].type,
620 drm_dvi_i_select_enum_list[i].name);
621 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
622
623 dvi_i_subconnector =
624 drm_property_create(dev, DRM_MODE_PROP_ENUM |
625 DRM_MODE_PROP_IMMUTABLE,
626 "subconnector",
627 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
628 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
629 drm_property_add_enum(dvi_i_subconnector, i,
630 drm_dvi_i_subconnector_enum_list[i].type,
631 drm_dvi_i_subconnector_enum_list[i].name);
632 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
633
634 return 0;
635}
636EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
637
638/**
639 * drm_create_tv_properties - create TV specific connector properties
640 * @dev: DRM device
641 * @num_modes: number of different TV formats (modes) supported
642 * @modes: array of pointers to strings containing name of each format
643 *
644 * Called by a driver's TV initialization routine, this function creates
645 * the TV specific connector properties for a given device. Caller is
646 * responsible for allocating a list of format names and passing them to
647 * this routine.
648 */
649int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
650 char *modes[])
651{
652 struct drm_property *tv_selector;
653 struct drm_property *tv_subconnector;
654 int i;
655
656 if (dev->mode_config.tv_select_subconnector_property)
657 return 0;
658
659 /*
660 * Basic connector properties
661 */
662 tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
663 "select subconnector",
664 ARRAY_SIZE(drm_tv_select_enum_list));
665 for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
666 drm_property_add_enum(tv_selector, i,
667 drm_tv_select_enum_list[i].type,
668 drm_tv_select_enum_list[i].name);
669 dev->mode_config.tv_select_subconnector_property = tv_selector;
670
671 tv_subconnector =
672 drm_property_create(dev, DRM_MODE_PROP_ENUM |
673 DRM_MODE_PROP_IMMUTABLE, "subconnector",
674 ARRAY_SIZE(drm_tv_subconnector_enum_list));
675 for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
676 drm_property_add_enum(tv_subconnector, i,
677 drm_tv_subconnector_enum_list[i].type,
678 drm_tv_subconnector_enum_list[i].name);
679 dev->mode_config.tv_subconnector_property = tv_subconnector;
680
681 /*
682 * Other, TV specific properties: margins & TV modes.
683 */
684 dev->mode_config.tv_left_margin_property =
685 drm_property_create(dev, DRM_MODE_PROP_RANGE,
686 "left margin", 2);
687 dev->mode_config.tv_left_margin_property->values[0] = 0;
688 dev->mode_config.tv_left_margin_property->values[1] = 100;
689
690 dev->mode_config.tv_right_margin_property =
691 drm_property_create(dev, DRM_MODE_PROP_RANGE,
692 "right margin", 2);
693 dev->mode_config.tv_right_margin_property->values[0] = 0;
694 dev->mode_config.tv_right_margin_property->values[1] = 100;
695
696 dev->mode_config.tv_top_margin_property =
697 drm_property_create(dev, DRM_MODE_PROP_RANGE,
698 "top margin", 2);
699 dev->mode_config.tv_top_margin_property->values[0] = 0;
700 dev->mode_config.tv_top_margin_property->values[1] = 100;
701
702 dev->mode_config.tv_bottom_margin_property =
703 drm_property_create(dev, DRM_MODE_PROP_RANGE,
704 "bottom margin", 2);
705 dev->mode_config.tv_bottom_margin_property->values[0] = 0;
706 dev->mode_config.tv_bottom_margin_property->values[1] = 100;
707
708 dev->mode_config.tv_mode_property =
709 drm_property_create(dev, DRM_MODE_PROP_ENUM,
710 "mode", num_modes);
711 for (i = 0; i < num_modes; i++)
712 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
713 i, modes[i]);
714
715 return 0;
716}
717EXPORT_SYMBOL(drm_mode_create_tv_properties);
718
719/**
720 * drm_mode_create_scaling_mode_property - create scaling mode property
721 * @dev: DRM device
722 *
723 * Called by a driver the first time it's needed, must be attached to desired
724 * connectors.
725 */
726int drm_mode_create_scaling_mode_property(struct drm_device *dev)
727{
728 struct drm_property *scaling_mode;
729 int i;
730
731 if (dev->mode_config.scaling_mode_property)
732 return 0;
733
734 scaling_mode =
735 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
736 ARRAY_SIZE(drm_scaling_mode_enum_list));
737 for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
738 drm_property_add_enum(scaling_mode, i,
739 drm_scaling_mode_enum_list[i].type,
740 drm_scaling_mode_enum_list[i].name);
741
742 dev->mode_config.scaling_mode_property = scaling_mode;
743
744 return 0;
745}
746EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
747
748/**
749 * drm_mode_create_dithering_property - create dithering property
750 * @dev: DRM device
751 *
752 * Called by a driver the first time it's needed, must be attached to desired
753 * connectors.
754 */
755int drm_mode_create_dithering_property(struct drm_device *dev)
756{
757 struct drm_property *dithering_mode;
758 int i;
759
760 if (dev->mode_config.dithering_mode_property)
761 return 0;
762
763 dithering_mode =
764 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
765 ARRAY_SIZE(drm_dithering_mode_enum_list));
766 for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
767 drm_property_add_enum(dithering_mode, i,
768 drm_dithering_mode_enum_list[i].type,
769 drm_dithering_mode_enum_list[i].name);
770 dev->mode_config.dithering_mode_property = dithering_mode;
771
772 return 0;
773}
774EXPORT_SYMBOL(drm_mode_create_dithering_property);
775
776/**
777 * drm_mode_config_init - initialize DRM mode_configuration structure
778 * @dev: DRM device
779 *
780 * LOCKING:
781 * None, should happen single threaded at init time.
782 *
783 * Initialize @dev's mode_config structure, used for tracking the graphics
784 * configuration of @dev.
785 */
786void drm_mode_config_init(struct drm_device *dev)
787{
788 mutex_init(&dev->mode_config.mutex);
789 INIT_LIST_HEAD(&dev->mode_config.fb_list);
790 INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list);
791 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
792 INIT_LIST_HEAD(&dev->mode_config.connector_list);
793 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
794 INIT_LIST_HEAD(&dev->mode_config.property_list);
795 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
796 idr_init(&dev->mode_config.crtc_idr);
797
798 mutex_lock(&dev->mode_config.mutex);
799 drm_mode_create_standard_connector_properties(dev);
800 mutex_unlock(&dev->mode_config.mutex);
801
802 /* Just to be sure */
803 dev->mode_config.num_fb = 0;
804 dev->mode_config.num_connector = 0;
805 dev->mode_config.num_crtc = 0;
806 dev->mode_config.num_encoder = 0;
807}
808EXPORT_SYMBOL(drm_mode_config_init);
809
810int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
811{
812 uint32_t total_objects = 0;
813
814 total_objects += dev->mode_config.num_crtc;
815 total_objects += dev->mode_config.num_connector;
816 total_objects += dev->mode_config.num_encoder;
817
818 if (total_objects == 0)
819 return -EINVAL;
820
821 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
822 if (!group->id_list)
823 return -ENOMEM;
824
825 group->num_crtcs = 0;
826 group->num_connectors = 0;
827 group->num_encoders = 0;
828 return 0;
829}
830
831int drm_mode_group_init_legacy_group(struct drm_device *dev,
832 struct drm_mode_group *group)
833{
834 struct drm_crtc *crtc;
835 struct drm_encoder *encoder;
836 struct drm_connector *connector;
837 int ret;
838
839 if ((ret = drm_mode_group_init(dev, group)))
840 return ret;
841
842 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
843 group->id_list[group->num_crtcs++] = crtc->base.id;
844
845 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
846 group->id_list[group->num_crtcs + group->num_encoders++] =
847 encoder->base.id;
848
849 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
850 group->id_list[group->num_crtcs + group->num_encoders +
851 group->num_connectors++] = connector->base.id;
852
853 return 0;
854}
855
856/**
857 * drm_mode_config_cleanup - free up DRM mode_config info
858 * @dev: DRM device
859 *
860 * LOCKING:
861 * Caller must hold mode config lock.
862 *
863 * Free up all the connectors and CRTCs associated with this DRM device, then
864 * free up the framebuffers and associated buffer objects.
865 *
866 * FIXME: cleanup any dangling user buffer objects too
867 */
868void drm_mode_config_cleanup(struct drm_device *dev)
869{
870 struct drm_connector *connector, *ot;
871 struct drm_crtc *crtc, *ct;
872 struct drm_encoder *encoder, *enct;
873 struct drm_framebuffer *fb, *fbt;
874 struct drm_property *property, *pt;
875
876 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
877 head) {
878 encoder->funcs->destroy(encoder);
879 }
880
881 list_for_each_entry_safe(connector, ot,
882 &dev->mode_config.connector_list, head) {
883 connector->funcs->destroy(connector);
884 }
885
886 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
887 head) {
888 drm_property_destroy(dev, property);
889 }
890
891 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
892 fb->funcs->destroy(fb);
893 }
894
895 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
896 crtc->funcs->destroy(crtc);
897 }
898
899}
900EXPORT_SYMBOL(drm_mode_config_cleanup);
901
902/**
903 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
904 * @out: drm_mode_modeinfo struct to return to the user
905 * @in: drm_display_mode to use
906 *
907 * LOCKING:
908 * None.
909 *
910 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
911 * the user.
912 */
913void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
914 struct drm_display_mode *in)
915{
916 out->clock = in->clock;
917 out->hdisplay = in->hdisplay;
918 out->hsync_start = in->hsync_start;
919 out->hsync_end = in->hsync_end;
920 out->htotal = in->htotal;
921 out->hskew = in->hskew;
922 out->vdisplay = in->vdisplay;
923 out->vsync_start = in->vsync_start;
924 out->vsync_end = in->vsync_end;
925 out->vtotal = in->vtotal;
926 out->vscan = in->vscan;
927 out->vrefresh = in->vrefresh;
928 out->flags = in->flags;
929 out->type = in->type;
930 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
931 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
932}
933
934/**
935 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
936 * @out: drm_display_mode to return to the user
937 * @in: drm_mode_modeinfo to use
938 *
939 * LOCKING:
940 * None.
941 *
942 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
943 * the caller.
944 */
945void drm_crtc_convert_umode(struct drm_display_mode *out,
946 struct drm_mode_modeinfo *in)
947{
948 out->clock = in->clock;
949 out->hdisplay = in->hdisplay;
950 out->hsync_start = in->hsync_start;
951 out->hsync_end = in->hsync_end;
952 out->htotal = in->htotal;
953 out->hskew = in->hskew;
954 out->vdisplay = in->vdisplay;
955 out->vsync_start = in->vsync_start;
956 out->vsync_end = in->vsync_end;
957 out->vtotal = in->vtotal;
958 out->vscan = in->vscan;
959 out->vrefresh = in->vrefresh;
960 out->flags = in->flags;
961 out->type = in->type;
962 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
963 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
964}
965
966/**
967 * drm_mode_getresources - get graphics configuration
968 * @inode: inode from the ioctl
969 * @filp: file * from the ioctl
970 * @cmd: cmd from ioctl
971 * @arg: arg from ioctl
972 *
973 * LOCKING:
974 * Takes mode config lock.
975 *
976 * Construct a set of configuration description structures and return
977 * them to the user, including CRTC, connector and framebuffer configuration.
978 *
979 * Called by the user via ioctl.
980 *
981 * RETURNS:
982 * Zero on success, errno on failure.
983 */
984int drm_mode_getresources(struct drm_device *dev, void *data,
985 struct drm_file *file_priv)
986{
987 struct drm_mode_card_res *card_res = data;
988 struct list_head *lh;
989 struct drm_framebuffer *fb;
990 struct drm_connector *connector;
991 struct drm_crtc *crtc;
992 struct drm_encoder *encoder;
993 int ret = 0;
994 int connector_count = 0;
995 int crtc_count = 0;
996 int fb_count = 0;
997 int encoder_count = 0;
998 int copied = 0, i;
999 uint32_t __user *fb_id;
1000 uint32_t __user *crtc_id;
1001 uint32_t __user *connector_id;
1002 uint32_t __user *encoder_id;
1003 struct drm_mode_group *mode_group;
1004
1005 mutex_lock(&dev->mode_config.mutex);
1006
1007 /*
1008 * For the non-control nodes we need to limit the list of resources
1009 * by IDs in the group list for this node
1010 */
1011 list_for_each(lh, &file_priv->fbs)
1012 fb_count++;
1013
1014 mode_group = &file_priv->master->minor->mode_group;
1015 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1016
1017 list_for_each(lh, &dev->mode_config.crtc_list)
1018 crtc_count++;
1019
1020 list_for_each(lh, &dev->mode_config.connector_list)
1021 connector_count++;
1022
1023 list_for_each(lh, &dev->mode_config.encoder_list)
1024 encoder_count++;
1025 } else {
1026
1027 crtc_count = mode_group->num_crtcs;
1028 connector_count = mode_group->num_connectors;
1029 encoder_count = mode_group->num_encoders;
1030 }
1031
1032 card_res->max_height = dev->mode_config.max_height;
1033 card_res->min_height = dev->mode_config.min_height;
1034 card_res->max_width = dev->mode_config.max_width;
1035 card_res->min_width = dev->mode_config.min_width;
1036
1037 /* handle this in 4 parts */
1038 /* FBs */
1039 if (card_res->count_fbs >= fb_count) {
1040 copied = 0;
1041 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1042 list_for_each_entry(fb, &file_priv->fbs, head) {
1043 if (put_user(fb->base.id, fb_id + copied)) {
1044 ret = -EFAULT;
1045 goto out;
1046 }
1047 copied++;
1048 }
1049 }
1050 card_res->count_fbs = fb_count;
1051
1052 /* CRTCs */
1053 if (card_res->count_crtcs >= crtc_count) {
1054 copied = 0;
1055 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1056 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1057 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1058 head) {
1059 DRM_DEBUG("CRTC ID is %d\n", crtc->base.id);
1060 if (put_user(crtc->base.id, crtc_id + copied)) {
1061 ret = -EFAULT;
1062 goto out;
1063 }
1064 copied++;
1065 }
1066 } else {
1067 for (i = 0; i < mode_group->num_crtcs; i++) {
1068 if (put_user(mode_group->id_list[i],
1069 crtc_id + copied)) {
1070 ret = -EFAULT;
1071 goto out;
1072 }
1073 copied++;
1074 }
1075 }
1076 }
1077 card_res->count_crtcs = crtc_count;
1078
1079 /* Encoders */
1080 if (card_res->count_encoders >= encoder_count) {
1081 copied = 0;
1082 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1083 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1084 list_for_each_entry(encoder,
1085 &dev->mode_config.encoder_list,
1086 head) {
1087 DRM_DEBUG("ENCODER ID is %d\n",
1088 encoder->base.id);
1089 if (put_user(encoder->base.id, encoder_id +
1090 copied)) {
1091 ret = -EFAULT;
1092 goto out;
1093 }
1094 copied++;
1095 }
1096 } else {
1097 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1098 if (put_user(mode_group->id_list[i],
1099 encoder_id + copied)) {
1100 ret = -EFAULT;
1101 goto out;
1102 }
1103 copied++;
1104 }
1105
1106 }
1107 }
1108 card_res->count_encoders = encoder_count;
1109
1110 /* Connectors */
1111 if (card_res->count_connectors >= connector_count) {
1112 copied = 0;
1113 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1114 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1115 list_for_each_entry(connector,
1116 &dev->mode_config.connector_list,
1117 head) {
1118 DRM_DEBUG("CONNECTOR ID is %d\n",
1119 connector->base.id);
1120 if (put_user(connector->base.id,
1121 connector_id + copied)) {
1122 ret = -EFAULT;
1123 goto out;
1124 }
1125 copied++;
1126 }
1127 } else {
1128 int start = mode_group->num_crtcs +
1129 mode_group->num_encoders;
1130 for (i = start; i < start + mode_group->num_connectors; i++) {
1131 if (put_user(mode_group->id_list[i],
1132 connector_id + copied)) {
1133 ret = -EFAULT;
1134 goto out;
1135 }
1136 copied++;
1137 }
1138 }
1139 }
1140 card_res->count_connectors = connector_count;
1141
1142 DRM_DEBUG("Counted %d %d %d\n", card_res->count_crtcs,
1143 card_res->count_connectors, card_res->count_encoders);
1144
1145out:
1146 mutex_unlock(&dev->mode_config.mutex);
1147 return ret;
1148}
1149
1150/**
1151 * drm_mode_getcrtc - get CRTC configuration
1152 * @inode: inode from the ioctl
1153 * @filp: file * from the ioctl
1154 * @cmd: cmd from ioctl
1155 * @arg: arg from ioctl
1156 *
1157 * LOCKING:
1158 * Caller? (FIXME)
1159 *
1160 * Construct a CRTC configuration structure to return to the user.
1161 *
1162 * Called by the user via ioctl.
1163 *
1164 * RETURNS:
1165 * Zero on success, errno on failure.
1166 */
1167int drm_mode_getcrtc(struct drm_device *dev,
1168 void *data, struct drm_file *file_priv)
1169{
1170 struct drm_mode_crtc *crtc_resp = data;
1171 struct drm_crtc *crtc;
1172 struct drm_mode_object *obj;
1173 int ret = 0;
1174
1175 mutex_lock(&dev->mode_config.mutex);
1176
1177 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1178 DRM_MODE_OBJECT_CRTC);
1179 if (!obj) {
1180 ret = -EINVAL;
1181 goto out;
1182 }
1183 crtc = obj_to_crtc(obj);
1184
1185 crtc_resp->x = crtc->x;
1186 crtc_resp->y = crtc->y;
1187 crtc_resp->gamma_size = crtc->gamma_size;
1188 if (crtc->fb)
1189 crtc_resp->fb_id = crtc->fb->base.id;
1190 else
1191 crtc_resp->fb_id = 0;
1192
1193 if (crtc->enabled) {
1194
1195 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1196 crtc_resp->mode_valid = 1;
1197
1198 } else {
1199 crtc_resp->mode_valid = 0;
1200 }
1201
1202out:
1203 mutex_unlock(&dev->mode_config.mutex);
1204 return ret;
1205}
1206
1207/**
1208 * drm_mode_getconnector - get connector configuration
1209 * @inode: inode from the ioctl
1210 * @filp: file * from the ioctl
1211 * @cmd: cmd from ioctl
1212 * @arg: arg from ioctl
1213 *
1214 * LOCKING:
1215 * Caller? (FIXME)
1216 *
1217 * Construct a connector configuration structure to return to the user.
1218 *
1219 * Called by the user via ioctl.
1220 *
1221 * RETURNS:
1222 * Zero on success, errno on failure.
1223 */
1224int drm_mode_getconnector(struct drm_device *dev, void *data,
1225 struct drm_file *file_priv)
1226{
1227 struct drm_mode_get_connector *out_resp = data;
1228 struct drm_mode_object *obj;
1229 struct drm_connector *connector;
1230 struct drm_display_mode *mode;
1231 int mode_count = 0;
1232 int props_count = 0;
1233 int encoders_count = 0;
1234 int ret = 0;
1235 int copied = 0;
1236 int i;
1237 struct drm_mode_modeinfo u_mode;
1238 struct drm_mode_modeinfo __user *mode_ptr;
1239 uint32_t __user *prop_ptr;
1240 uint64_t __user *prop_values;
1241 uint32_t __user *encoder_ptr;
1242
1243 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1244
1245 DRM_DEBUG("connector id %d:\n", out_resp->connector_id);
1246
1247 mutex_lock(&dev->mode_config.mutex);
1248
1249 obj = drm_mode_object_find(dev, out_resp->connector_id,
1250 DRM_MODE_OBJECT_CONNECTOR);
1251 if (!obj) {
1252 ret = -EINVAL;
1253 goto out;
1254 }
1255 connector = obj_to_connector(obj);
1256
1257 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1258 if (connector->property_ids[i] != 0) {
1259 props_count++;
1260 }
1261 }
1262
1263 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1264 if (connector->encoder_ids[i] != 0) {
1265 encoders_count++;
1266 }
1267 }
1268
1269 if (out_resp->count_modes == 0) {
1270 connector->funcs->fill_modes(connector,
1271 dev->mode_config.max_width,
1272 dev->mode_config.max_height);
1273 }
1274
1275 /* delayed so we get modes regardless of pre-fill_modes state */
1276 list_for_each_entry(mode, &connector->modes, head)
1277 mode_count++;
1278
1279 out_resp->connector_id = connector->base.id;
1280 out_resp->connector_type = connector->connector_type;
1281 out_resp->connector_type_id = connector->connector_type_id;
1282 out_resp->mm_width = connector->display_info.width_mm;
1283 out_resp->mm_height = connector->display_info.height_mm;
1284 out_resp->subpixel = connector->display_info.subpixel_order;
1285 out_resp->connection = connector->status;
1286 if (connector->encoder)
1287 out_resp->encoder_id = connector->encoder->base.id;
1288 else
1289 out_resp->encoder_id = 0;
1290
1291 /*
1292 * This ioctl is called twice, once to determine how much space is
1293 * needed, and the 2nd time to fill it.
1294 */
1295 if ((out_resp->count_modes >= mode_count) && mode_count) {
1296 copied = 0;
1297 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1298 list_for_each_entry(mode, &connector->modes, head) {
1299 drm_crtc_convert_to_umode(&u_mode, mode);
1300 if (copy_to_user(mode_ptr + copied,
1301 &u_mode, sizeof(u_mode))) {
1302 ret = -EFAULT;
1303 goto out;
1304 }
1305 copied++;
1306 }
1307 }
1308 out_resp->count_modes = mode_count;
1309
1310 if ((out_resp->count_props >= props_count) && props_count) {
1311 copied = 0;
1312 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1313 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1314 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1315 if (connector->property_ids[i] != 0) {
1316 if (put_user(connector->property_ids[i],
1317 prop_ptr + copied)) {
1318 ret = -EFAULT;
1319 goto out;
1320 }
1321
1322 if (put_user(connector->property_values[i],
1323 prop_values + copied)) {
1324 ret = -EFAULT;
1325 goto out;
1326 }
1327 copied++;
1328 }
1329 }
1330 }
1331 out_resp->count_props = props_count;
1332
1333 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1334 copied = 0;
1335 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1336 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1337 if (connector->encoder_ids[i] != 0) {
1338 if (put_user(connector->encoder_ids[i],
1339 encoder_ptr + copied)) {
1340 ret = -EFAULT;
1341 goto out;
1342 }
1343 copied++;
1344 }
1345 }
1346 }
1347 out_resp->count_encoders = encoders_count;
1348
1349out:
1350 mutex_unlock(&dev->mode_config.mutex);
1351 return ret;
1352}
1353
1354int drm_mode_getencoder(struct drm_device *dev, void *data,
1355 struct drm_file *file_priv)
1356{
1357 struct drm_mode_get_encoder *enc_resp = data;
1358 struct drm_mode_object *obj;
1359 struct drm_encoder *encoder;
1360 int ret = 0;
1361
1362 mutex_lock(&dev->mode_config.mutex);
1363 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1364 DRM_MODE_OBJECT_ENCODER);
1365 if (!obj) {
1366 ret = -EINVAL;
1367 goto out;
1368 }
1369 encoder = obj_to_encoder(obj);
1370
1371 if (encoder->crtc)
1372 enc_resp->crtc_id = encoder->crtc->base.id;
1373 else
1374 enc_resp->crtc_id = 0;
1375 enc_resp->encoder_type = encoder->encoder_type;
1376 enc_resp->encoder_id = encoder->base.id;
1377 enc_resp->possible_crtcs = encoder->possible_crtcs;
1378 enc_resp->possible_clones = encoder->possible_clones;
1379
1380out:
1381 mutex_unlock(&dev->mode_config.mutex);
1382 return ret;
1383}
1384
1385/**
1386 * drm_mode_setcrtc - set CRTC configuration
1387 * @inode: inode from the ioctl
1388 * @filp: file * from the ioctl
1389 * @cmd: cmd from ioctl
1390 * @arg: arg from ioctl
1391 *
1392 * LOCKING:
1393 * Caller? (FIXME)
1394 *
1395 * Build a new CRTC configuration based on user request.
1396 *
1397 * Called by the user via ioctl.
1398 *
1399 * RETURNS:
1400 * Zero on success, errno on failure.
1401 */
1402int drm_mode_setcrtc(struct drm_device *dev, void *data,
1403 struct drm_file *file_priv)
1404{
1405 struct drm_mode_config *config = &dev->mode_config;
1406 struct drm_mode_crtc *crtc_req = data;
1407 struct drm_mode_object *obj;
1408 struct drm_crtc *crtc, *crtcfb;
1409 struct drm_connector **connector_set = NULL, *connector;
1410 struct drm_framebuffer *fb = NULL;
1411 struct drm_display_mode *mode = NULL;
1412 struct drm_mode_set set;
1413 uint32_t __user *set_connectors_ptr;
1414 int ret = 0;
1415 int i;
1416
1417 mutex_lock(&dev->mode_config.mutex);
1418 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1419 DRM_MODE_OBJECT_CRTC);
1420 if (!obj) {
1421 DRM_DEBUG("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1422 ret = -EINVAL;
1423 goto out;
1424 }
1425 crtc = obj_to_crtc(obj);
1426
1427 if (crtc_req->mode_valid) {
1428 /* If we have a mode we need a framebuffer. */
1429 /* If we pass -1, set the mode with the currently bound fb */
1430 if (crtc_req->fb_id == -1) {
1431 list_for_each_entry(crtcfb,
1432 &dev->mode_config.crtc_list, head) {
1433 if (crtcfb == crtc) {
1434 DRM_DEBUG("Using current fb for setmode\n");
1435 fb = crtc->fb;
1436 }
1437 }
1438 } else {
1439 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1440 DRM_MODE_OBJECT_FB);
1441 if (!obj) {
1442 DRM_DEBUG("Unknown FB ID%d\n", crtc_req->fb_id);
1443 ret = -EINVAL;
1444 goto out;
1445 }
1446 fb = obj_to_fb(obj);
1447 }
1448
1449 mode = drm_mode_create(dev);
1450 drm_crtc_convert_umode(mode, &crtc_req->mode);
1451 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1452 }
1453
1454 if (crtc_req->count_connectors == 0 && mode) {
1455 DRM_DEBUG("Count connectors is 0 but mode set\n");
1456 ret = -EINVAL;
1457 goto out;
1458 }
1459
1460 if (crtc_req->count_connectors > 0 && !mode && !fb) {
1461 DRM_DEBUG("Count connectors is %d but no mode or fb set\n",
1462 crtc_req->count_connectors);
1463 ret = -EINVAL;
1464 goto out;
1465 }
1466
1467 if (crtc_req->count_connectors > 0) {
1468 u32 out_id;
1469
1470 /* Avoid unbounded kernel memory allocation */
1471 if (crtc_req->count_connectors > config->num_connector) {
1472 ret = -EINVAL;
1473 goto out;
1474 }
1475
1476 connector_set = kmalloc(crtc_req->count_connectors *
1477 sizeof(struct drm_connector *),
1478 GFP_KERNEL);
1479 if (!connector_set) {
1480 ret = -ENOMEM;
1481 goto out;
1482 }
1483
1484 for (i = 0; i < crtc_req->count_connectors; i++) {
1485 set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1486 if (get_user(out_id, &set_connectors_ptr[i])) {
1487 ret = -EFAULT;
1488 goto out;
1489 }
1490
1491 obj = drm_mode_object_find(dev, out_id,
1492 DRM_MODE_OBJECT_CONNECTOR);
1493 if (!obj) {
1494 DRM_DEBUG("Connector id %d unknown\n", out_id);
1495 ret = -EINVAL;
1496 goto out;
1497 }
1498 connector = obj_to_connector(obj);
1499
1500 connector_set[i] = connector;
1501 }
1502 }
1503
1504 set.crtc = crtc;
1505 set.x = crtc_req->x;
1506 set.y = crtc_req->y;
1507 set.mode = mode;
1508 set.connectors = connector_set;
1509 set.num_connectors = crtc_req->count_connectors;
1510 set.fb =fb;
1511 ret = crtc->funcs->set_config(&set);
1512
1513out:
1514 kfree(connector_set);
1515 mutex_unlock(&dev->mode_config.mutex);
1516 return ret;
1517}
1518
1519int drm_mode_cursor_ioctl(struct drm_device *dev,
1520 void *data, struct drm_file *file_priv)
1521{
1522 struct drm_mode_cursor *req = data;
1523 struct drm_mode_object *obj;
1524 struct drm_crtc *crtc;
1525 int ret = 0;
1526
1527 DRM_DEBUG("\n");
1528
1529 if (!req->flags) {
1530 DRM_ERROR("no operation set\n");
1531 return -EINVAL;
1532 }
1533
1534 mutex_lock(&dev->mode_config.mutex);
1535 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1536 if (!obj) {
1537 DRM_DEBUG("Unknown CRTC ID %d\n", req->crtc_id);
1538 ret = -EINVAL;
1539 goto out;
1540 }
1541 crtc = obj_to_crtc(obj);
1542
1543 if (req->flags & DRM_MODE_CURSOR_BO) {
1544 if (!crtc->funcs->cursor_set) {
1545 DRM_ERROR("crtc does not support cursor\n");
1546 ret = -ENXIO;
1547 goto out;
1548 }
1549 /* Turns off the cursor if handle is 0 */
1550 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1551 req->width, req->height);
1552 }
1553
1554 if (req->flags & DRM_MODE_CURSOR_MOVE) {
1555 if (crtc->funcs->cursor_move) {
1556 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1557 } else {
1558 DRM_ERROR("crtc does not support cursor\n");
1559 ret = -EFAULT;
1560 goto out;
1561 }
1562 }
1563out:
1564 mutex_unlock(&dev->mode_config.mutex);
1565 return ret;
1566}
1567
1568/**
1569 * drm_mode_addfb - add an FB to the graphics configuration
1570 * @inode: inode from the ioctl
1571 * @filp: file * from the ioctl
1572 * @cmd: cmd from ioctl
1573 * @arg: arg from ioctl
1574 *
1575 * LOCKING:
1576 * Takes mode config lock.
1577 *
1578 * Add a new FB to the specified CRTC, given a user request.
1579 *
1580 * Called by the user via ioctl.
1581 *
1582 * RETURNS:
1583 * Zero on success, errno on failure.
1584 */
1585int drm_mode_addfb(struct drm_device *dev,
1586 void *data, struct drm_file *file_priv)
1587{
1588 struct drm_mode_fb_cmd *r = data;
1589 struct drm_mode_config *config = &dev->mode_config;
1590 struct drm_framebuffer *fb;
1591 int ret = 0;
1592
1593 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1594 DRM_ERROR("mode new framebuffer width not within limits\n");
1595 return -EINVAL;
1596 }
1597 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1598 DRM_ERROR("mode new framebuffer height not within limits\n");
1599 return -EINVAL;
1600 }
1601
1602 mutex_lock(&dev->mode_config.mutex);
1603
1604 /* TODO check buffer is sufficently large */
1605 /* TODO setup destructor callback */
1606
1607 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1608 if (!fb) {
1609 DRM_ERROR("could not create framebuffer\n");
1610 ret = -EINVAL;
1611 goto out;
1612 }
1613
1614 r->fb_id = fb->base.id;
1615 list_add(&fb->filp_head, &file_priv->fbs);
1616
1617out:
1618 mutex_unlock(&dev->mode_config.mutex);
1619 return ret;
1620}
1621
1622/**
1623 * drm_mode_rmfb - remove an FB from the configuration
1624 * @inode: inode from the ioctl
1625 * @filp: file * from the ioctl
1626 * @cmd: cmd from ioctl
1627 * @arg: arg from ioctl
1628 *
1629 * LOCKING:
1630 * Takes mode config lock.
1631 *
1632 * Remove the FB specified by the user.
1633 *
1634 * Called by the user via ioctl.
1635 *
1636 * RETURNS:
1637 * Zero on success, errno on failure.
1638 */
1639int drm_mode_rmfb(struct drm_device *dev,
1640 void *data, struct drm_file *file_priv)
1641{
1642 struct drm_mode_object *obj;
1643 struct drm_framebuffer *fb = NULL;
1644 struct drm_framebuffer *fbl = NULL;
1645 uint32_t *id = data;
1646 int ret = 0;
1647 int found = 0;
1648
1649 mutex_lock(&dev->mode_config.mutex);
1650 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1651 /* TODO check that we realy get a framebuffer back. */
1652 if (!obj) {
1653 DRM_ERROR("mode invalid framebuffer id\n");
1654 ret = -EINVAL;
1655 goto out;
1656 }
1657 fb = obj_to_fb(obj);
1658
1659 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1660 if (fb == fbl)
1661 found = 1;
1662
1663 if (!found) {
1664 DRM_ERROR("tried to remove a fb that we didn't own\n");
1665 ret = -EINVAL;
1666 goto out;
1667 }
1668
1669 /* TODO release all crtc connected to the framebuffer */
1670 /* TODO unhock the destructor from the buffer object */
1671
1672 list_del(&fb->filp_head);
1673 fb->funcs->destroy(fb);
1674
1675out:
1676 mutex_unlock(&dev->mode_config.mutex);
1677 return ret;
1678}
1679
1680/**
1681 * drm_mode_getfb - get FB info
1682 * @inode: inode from the ioctl
1683 * @filp: file * from the ioctl
1684 * @cmd: cmd from ioctl
1685 * @arg: arg from ioctl
1686 *
1687 * LOCKING:
1688 * Caller? (FIXME)
1689 *
1690 * Lookup the FB given its ID and return info about it.
1691 *
1692 * Called by the user via ioctl.
1693 *
1694 * RETURNS:
1695 * Zero on success, errno on failure.
1696 */
1697int drm_mode_getfb(struct drm_device *dev,
1698 void *data, struct drm_file *file_priv)
1699{
1700 struct drm_mode_fb_cmd *r = data;
1701 struct drm_mode_object *obj;
1702 struct drm_framebuffer *fb;
1703 int ret = 0;
1704
1705 mutex_lock(&dev->mode_config.mutex);
1706 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1707 if (!obj) {
1708 DRM_ERROR("invalid framebuffer id\n");
1709 ret = -EINVAL;
1710 goto out;
1711 }
1712 fb = obj_to_fb(obj);
1713
1714 r->height = fb->height;
1715 r->width = fb->width;
1716 r->depth = fb->depth;
1717 r->bpp = fb->bits_per_pixel;
1718 r->pitch = fb->pitch;
1719 fb->funcs->create_handle(fb, file_priv, &r->handle);
1720
1721out:
1722 mutex_unlock(&dev->mode_config.mutex);
1723 return ret;
1724}
1725
1726/**
1727 * drm_fb_release - remove and free the FBs on this file
1728 * @filp: file * from the ioctl
1729 *
1730 * LOCKING:
1731 * Takes mode config lock.
1732 *
1733 * Destroy all the FBs associated with @filp.
1734 *
1735 * Called by the user via ioctl.
1736 *
1737 * RETURNS:
1738 * Zero on success, errno on failure.
1739 */
1740void drm_fb_release(struct file *filp)
1741{
1742 struct drm_file *priv = filp->private_data;
1743 struct drm_device *dev = priv->minor->dev;
1744 struct drm_framebuffer *fb, *tfb;
1745
1746 mutex_lock(&dev->mode_config.mutex);
1747 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1748 list_del(&fb->filp_head);
1749 fb->funcs->destroy(fb);
1750 }
1751 mutex_unlock(&dev->mode_config.mutex);
1752}
1753
1754/**
1755 * drm_mode_attachmode - add a mode to the user mode list
1756 * @dev: DRM device
1757 * @connector: connector to add the mode to
1758 * @mode: mode to add
1759 *
1760 * Add @mode to @connector's user mode list.
1761 */
1762static int drm_mode_attachmode(struct drm_device *dev,
1763 struct drm_connector *connector,
1764 struct drm_display_mode *mode)
1765{
1766 int ret = 0;
1767
1768 list_add_tail(&mode->head, &connector->user_modes);
1769 return ret;
1770}
1771
1772int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1773 struct drm_display_mode *mode)
1774{
1775 struct drm_connector *connector;
1776 int ret = 0;
1777 struct drm_display_mode *dup_mode;
1778 int need_dup = 0;
1779 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1780 if (!connector->encoder)
1781 break;
1782 if (connector->encoder->crtc == crtc) {
1783 if (need_dup)
1784 dup_mode = drm_mode_duplicate(dev, mode);
1785 else
1786 dup_mode = mode;
1787 ret = drm_mode_attachmode(dev, connector, dup_mode);
1788 if (ret)
1789 return ret;
1790 need_dup = 1;
1791 }
1792 }
1793 return 0;
1794}
1795EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1796
1797static int drm_mode_detachmode(struct drm_device *dev,
1798 struct drm_connector *connector,
1799 struct drm_display_mode *mode)
1800{
1801 int found = 0;
1802 int ret = 0;
1803 struct drm_display_mode *match_mode, *t;
1804
1805 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1806 if (drm_mode_equal(match_mode, mode)) {
1807 list_del(&match_mode->head);
1808 drm_mode_destroy(dev, match_mode);
1809 found = 1;
1810 break;
1811 }
1812 }
1813
1814 if (!found)
1815 ret = -EINVAL;
1816
1817 return ret;
1818}
1819
1820int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1821{
1822 struct drm_connector *connector;
1823
1824 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1825 drm_mode_detachmode(dev, connector, mode);
1826 }
1827 return 0;
1828}
1829EXPORT_SYMBOL(drm_mode_detachmode_crtc);
1830
1831/**
1832 * drm_fb_attachmode - Attach a user mode to an connector
1833 * @inode: inode from the ioctl
1834 * @filp: file * from the ioctl
1835 * @cmd: cmd from ioctl
1836 * @arg: arg from ioctl
1837 *
1838 * This attaches a user specified mode to an connector.
1839 * Called by the user via ioctl.
1840 *
1841 * RETURNS:
1842 * Zero on success, errno on failure.
1843 */
1844int drm_mode_attachmode_ioctl(struct drm_device *dev,
1845 void *data, struct drm_file *file_priv)
1846{
1847 struct drm_mode_mode_cmd *mode_cmd = data;
1848 struct drm_connector *connector;
1849 struct drm_display_mode *mode;
1850 struct drm_mode_object *obj;
1851 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1852 int ret = 0;
1853
1854 mutex_lock(&dev->mode_config.mutex);
1855
1856 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
1857 if (!obj) {
1858 ret = -EINVAL;
1859 goto out;
1860 }
1861 connector = obj_to_connector(obj);
1862
1863 mode = drm_mode_create(dev);
1864 if (!mode) {
1865 ret = -ENOMEM;
1866 goto out;
1867 }
1868
1869 drm_crtc_convert_umode(mode, umode);
1870
1871 ret = drm_mode_attachmode(dev, connector, mode);
1872out:
1873 mutex_unlock(&dev->mode_config.mutex);
1874 return ret;
1875}
1876
1877
1878/**
1879 * drm_fb_detachmode - Detach a user specified mode from an connector
1880 * @inode: inode from the ioctl
1881 * @filp: file * from the ioctl
1882 * @cmd: cmd from ioctl
1883 * @arg: arg from ioctl
1884 *
1885 * Called by the user via ioctl.
1886 *
1887 * RETURNS:
1888 * Zero on success, errno on failure.
1889 */
1890int drm_mode_detachmode_ioctl(struct drm_device *dev,
1891 void *data, struct drm_file *file_priv)
1892{
1893 struct drm_mode_object *obj;
1894 struct drm_mode_mode_cmd *mode_cmd = data;
1895 struct drm_connector *connector;
1896 struct drm_display_mode mode;
1897 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1898 int ret = 0;
1899
1900 mutex_lock(&dev->mode_config.mutex);
1901
1902 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
1903 if (!obj) {
1904 ret = -EINVAL;
1905 goto out;
1906 }
1907 connector = obj_to_connector(obj);
1908
1909 drm_crtc_convert_umode(&mode, umode);
1910 ret = drm_mode_detachmode(dev, connector, &mode);
1911out:
1912 mutex_unlock(&dev->mode_config.mutex);
1913 return ret;
1914}
1915
1916struct drm_property *drm_property_create(struct drm_device *dev, int flags,
1917 const char *name, int num_values)
1918{
1919 struct drm_property *property = NULL;
1920
1921 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
1922 if (!property)
1923 return NULL;
1924
1925 if (num_values) {
1926 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
1927 if (!property->values)
1928 goto fail;
1929 }
1930
1931 drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
1932 property->flags = flags;
1933 property->num_values = num_values;
1934 INIT_LIST_HEAD(&property->enum_blob_list);
1935
1936 if (name)
1937 strncpy(property->name, name, DRM_PROP_NAME_LEN);
1938
1939 list_add_tail(&property->head, &dev->mode_config.property_list);
1940 return property;
1941fail:
1942 kfree(property);
1943 return NULL;
1944}
1945EXPORT_SYMBOL(drm_property_create);
1946
1947int drm_property_add_enum(struct drm_property *property, int index,
1948 uint64_t value, const char *name)
1949{
1950 struct drm_property_enum *prop_enum;
1951
1952 if (!(property->flags & DRM_MODE_PROP_ENUM))
1953 return -EINVAL;
1954
1955 if (!list_empty(&property->enum_blob_list)) {
1956 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
1957 if (prop_enum->value == value) {
1958 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
1959 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
1960 return 0;
1961 }
1962 }
1963 }
1964
1965 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
1966 if (!prop_enum)
1967 return -ENOMEM;
1968
1969 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
1970 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
1971 prop_enum->value = value;
1972
1973 property->values[index] = value;
1974 list_add_tail(&prop_enum->head, &property->enum_blob_list);
1975 return 0;
1976}
1977EXPORT_SYMBOL(drm_property_add_enum);
1978
1979void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
1980{
1981 struct drm_property_enum *prop_enum, *pt;
1982
1983 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
1984 list_del(&prop_enum->head);
1985 kfree(prop_enum);
1986 }
1987
1988 if (property->num_values)
1989 kfree(property->values);
1990 drm_mode_object_put(dev, &property->base);
1991 list_del(&property->head);
1992 kfree(property);
1993}
1994EXPORT_SYMBOL(drm_property_destroy);
1995
1996int drm_connector_attach_property(struct drm_connector *connector,
1997 struct drm_property *property, uint64_t init_val)
1998{
1999 int i;
2000
2001 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2002 if (connector->property_ids[i] == 0) {
2003 connector->property_ids[i] = property->base.id;
2004 connector->property_values[i] = init_val;
2005 break;
2006 }
2007 }
2008
2009 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2010 return -EINVAL;
2011 return 0;
2012}
2013EXPORT_SYMBOL(drm_connector_attach_property);
2014
2015int drm_connector_property_set_value(struct drm_connector *connector,
2016 struct drm_property *property, uint64_t value)
2017{
2018 int i;
2019
2020 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2021 if (connector->property_ids[i] == property->base.id) {
2022 connector->property_values[i] = value;
2023 break;
2024 }
2025 }
2026
2027 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2028 return -EINVAL;
2029 return 0;
2030}
2031EXPORT_SYMBOL(drm_connector_property_set_value);
2032
2033int drm_connector_property_get_value(struct drm_connector *connector,
2034 struct drm_property *property, uint64_t *val)
2035{
2036 int i;
2037
2038 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2039 if (connector->property_ids[i] == property->base.id) {
2040 *val = connector->property_values[i];
2041 break;
2042 }
2043 }
2044
2045 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2046 return -EINVAL;
2047 return 0;
2048}
2049EXPORT_SYMBOL(drm_connector_property_get_value);
2050
2051int drm_mode_getproperty_ioctl(struct drm_device *dev,
2052 void *data, struct drm_file *file_priv)
2053{
2054 struct drm_mode_object *obj;
2055 struct drm_mode_get_property *out_resp = data;
2056 struct drm_property *property;
2057 int enum_count = 0;
2058 int blob_count = 0;
2059 int value_count = 0;
2060 int ret = 0, i;
2061 int copied;
2062 struct drm_property_enum *prop_enum;
2063 struct drm_mode_property_enum __user *enum_ptr;
2064 struct drm_property_blob *prop_blob;
2065 uint32_t *blob_id_ptr;
2066 uint64_t __user *values_ptr;
2067 uint32_t __user *blob_length_ptr;
2068
2069 mutex_lock(&dev->mode_config.mutex);
2070 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2071 if (!obj) {
2072 ret = -EINVAL;
2073 goto done;
2074 }
2075 property = obj_to_property(obj);
2076
2077 if (property->flags & DRM_MODE_PROP_ENUM) {
2078 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2079 enum_count++;
2080 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2081 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2082 blob_count++;
2083 }
2084
2085 value_count = property->num_values;
2086
2087 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2088 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2089 out_resp->flags = property->flags;
2090
2091 if ((out_resp->count_values >= value_count) && value_count) {
2092 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2093 for (i = 0; i < value_count; i++) {
2094 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2095 ret = -EFAULT;
2096 goto done;
2097 }
2098 }
2099 }
2100 out_resp->count_values = value_count;
2101
2102 if (property->flags & DRM_MODE_PROP_ENUM) {
2103 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2104 copied = 0;
2105 enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2106 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2107
2108 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2109 ret = -EFAULT;
2110 goto done;
2111 }
2112
2113 if (copy_to_user(&enum_ptr[copied].name,
2114 &prop_enum->name, DRM_PROP_NAME_LEN)) {
2115 ret = -EFAULT;
2116 goto done;
2117 }
2118 copied++;
2119 }
2120 }
2121 out_resp->count_enum_blobs = enum_count;
2122 }
2123
2124 if (property->flags & DRM_MODE_PROP_BLOB) {
2125 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2126 copied = 0;
2127 blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2128 blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2129
2130 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2131 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2132 ret = -EFAULT;
2133 goto done;
2134 }
2135
2136 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2137 ret = -EFAULT;
2138 goto done;
2139 }
2140
2141 copied++;
2142 }
2143 }
2144 out_resp->count_enum_blobs = blob_count;
2145 }
2146done:
2147 mutex_unlock(&dev->mode_config.mutex);
2148 return ret;
2149}
2150
2151static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2152 void *data)
2153{
2154 struct drm_property_blob *blob;
2155
2156 if (!length || !data)
2157 return NULL;
2158
2159 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2160 if (!blob)
2161 return NULL;
2162
2163 blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2164 blob->length = length;
2165
2166 memcpy(blob->data, data, length);
2167
2168 drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2169
2170 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2171 return blob;
2172}
2173
2174static void drm_property_destroy_blob(struct drm_device *dev,
2175 struct drm_property_blob *blob)
2176{
2177 drm_mode_object_put(dev, &blob->base);
2178 list_del(&blob->head);
2179 kfree(blob);
2180}
2181
2182int drm_mode_getblob_ioctl(struct drm_device *dev,
2183 void *data, struct drm_file *file_priv)
2184{
2185 struct drm_mode_object *obj;
2186 struct drm_mode_get_blob *out_resp = data;
2187 struct drm_property_blob *blob;
2188 int ret = 0;
2189 void *blob_ptr;
2190
2191 mutex_lock(&dev->mode_config.mutex);
2192 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2193 if (!obj) {
2194 ret = -EINVAL;
2195 goto done;
2196 }
2197 blob = obj_to_blob(obj);
2198
2199 if (out_resp->length == blob->length) {
2200 blob_ptr = (void *)(unsigned long)out_resp->data;
2201 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2202 ret = -EFAULT;
2203 goto done;
2204 }
2205 }
2206 out_resp->length = blob->length;
2207
2208done:
2209 mutex_unlock(&dev->mode_config.mutex);
2210 return ret;
2211}
2212
2213int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2214 struct edid *edid)
2215{
2216 struct drm_device *dev = connector->dev;
2217 int ret = 0;
2218
2219 if (connector->edid_blob_ptr)
2220 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2221
2222 /* Delete edid, when there is none. */
2223 if (!edid) {
2224 connector->edid_blob_ptr = NULL;
2225 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2226 return ret;
2227 }
2228
2229 connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 128, edid);
2230
2231 ret = drm_connector_property_set_value(connector,
2232 dev->mode_config.edid_property,
2233 connector->edid_blob_ptr->base.id);
2234
2235 return ret;
2236}
2237EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2238
2239int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2240 void *data, struct drm_file *file_priv)
2241{
2242 struct drm_mode_connector_set_property *out_resp = data;
2243 struct drm_mode_object *obj;
2244 struct drm_property *property;
2245 struct drm_connector *connector;
2246 int ret = -EINVAL;
2247 int i;
2248
2249 mutex_lock(&dev->mode_config.mutex);
2250
2251 obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2252 if (!obj) {
2253 goto out;
2254 }
2255 connector = obj_to_connector(obj);
2256
2257 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2258 if (connector->property_ids[i] == out_resp->prop_id)
2259 break;
2260 }
2261
2262 if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2263 goto out;
2264 }
2265
2266 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2267 if (!obj) {
2268 goto out;
2269 }
2270 property = obj_to_property(obj);
2271
2272 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2273 goto out;
2274
2275 if (property->flags & DRM_MODE_PROP_RANGE) {
2276 if (out_resp->value < property->values[0])
2277 goto out;
2278
2279 if (out_resp->value > property->values[1])
2280 goto out;
2281 } else {
2282 int found = 0;
2283 for (i = 0; i < property->num_values; i++) {
2284 if (property->values[i] == out_resp->value) {
2285 found = 1;
2286 break;
2287 }
2288 }
2289 if (!found) {
2290 goto out;
2291 }
2292 }
2293
2294 if (connector->funcs->set_property)
2295 ret = connector->funcs->set_property(connector, property, out_resp->value);
2296
2297 /* store the property value if succesful */
2298 if (!ret)
2299 drm_connector_property_set_value(connector, property, out_resp->value);
2300out:
2301 mutex_unlock(&dev->mode_config.mutex);
2302 return ret;
2303}
2304
2305int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2306 struct drm_encoder *encoder)
2307{
2308 int i;
2309
2310 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2311 if (connector->encoder_ids[i] == 0) {
2312 connector->encoder_ids[i] = encoder->base.id;
2313 return 0;
2314 }
2315 }
2316 return -ENOMEM;
2317}
2318EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2319
2320void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2321 struct drm_encoder *encoder)
2322{
2323 int i;
2324 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2325 if (connector->encoder_ids[i] == encoder->base.id) {
2326 connector->encoder_ids[i] = 0;
2327 if (connector->encoder == encoder)
2328 connector->encoder = NULL;
2329 break;
2330 }
2331 }
2332}
2333EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2334
2335bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2336 int gamma_size)
2337{
2338 crtc->gamma_size = gamma_size;
2339
2340 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2341 if (!crtc->gamma_store) {
2342 crtc->gamma_size = 0;
2343 return false;
2344 }
2345
2346 return true;
2347}
2348EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2349
2350int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2351 void *data, struct drm_file *file_priv)
2352{
2353 struct drm_mode_crtc_lut *crtc_lut = data;
2354 struct drm_mode_object *obj;
2355 struct drm_crtc *crtc;
2356 void *r_base, *g_base, *b_base;
2357 int size;
2358 int ret = 0;
2359
2360 mutex_lock(&dev->mode_config.mutex);
2361 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2362 if (!obj) {
2363 ret = -EINVAL;
2364 goto out;
2365 }
2366 crtc = obj_to_crtc(obj);
2367
2368 /* memcpy into gamma store */
2369 if (crtc_lut->gamma_size != crtc->gamma_size) {
2370 ret = -EINVAL;
2371 goto out;
2372 }
2373
2374 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2375 r_base = crtc->gamma_store;
2376 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2377 ret = -EFAULT;
2378 goto out;
2379 }
2380
2381 g_base = r_base + size;
2382 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2383 ret = -EFAULT;
2384 goto out;
2385 }
2386
2387 b_base = g_base + size;
2388 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2389 ret = -EFAULT;
2390 goto out;
2391 }
2392
2393 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size);
2394
2395out:
2396 mutex_unlock(&dev->mode_config.mutex);
2397 return ret;
2398
2399}
2400
2401int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2402 void *data, struct drm_file *file_priv)
2403{
2404 struct drm_mode_crtc_lut *crtc_lut = data;
2405 struct drm_mode_object *obj;
2406 struct drm_crtc *crtc;
2407 void *r_base, *g_base, *b_base;
2408 int size;
2409 int ret = 0;
2410
2411 mutex_lock(&dev->mode_config.mutex);
2412 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2413 if (!obj) {
2414 ret = -EINVAL;
2415 goto out;
2416 }
2417 crtc = obj_to_crtc(obj);
2418
2419 /* memcpy into gamma store */
2420 if (crtc_lut->gamma_size != crtc->gamma_size) {
2421 ret = -EINVAL;
2422 goto out;
2423 }
2424
2425 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2426 r_base = crtc->gamma_store;
2427 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2428 ret = -EFAULT;
2429 goto out;
2430 }
2431
2432 g_base = r_base + size;
2433 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2434 ret = -EFAULT;
2435 goto out;
2436 }
2437
2438 b_base = g_base + size;
2439 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2440 ret = -EFAULT;
2441 goto out;
2442 }
2443out:
2444 mutex_unlock(&dev->mode_config.mutex);
2445 return ret;
2446}
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-11 10:57:34 -0500