WebSVN – Kolibri OS – Blame – /drivers/video/drm/drm_crtc.c

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

Subversion Repositories Kolibri OS

(root)/drivers/video/drm/drm_crtc.c – Rev 5060