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	*/
1179	serge	32	#include
1123	serge	33	#include "drm.h"
		34	#include "drmP.h"
		35	#include "drm_crtc.h"
		36
		37	struct drm_prop_enum_list {
		38	int type;
		39	char *name;
		40	};
		41
		42	/* Avoid boilerplate. I'm tired of typing. */
		43	#define DRM_ENUM_NAME_FN(fnname, list) \
		44	char *fnname(int val) \
		45	{ \
		46	int i; \
		47	for (i = 0; i < ARRAY_SIZE(list); i++) { \
		48	if (list[i].type == val) \
		49	return list[i].name; \
		50	} \
		51	return "(unknown)"; \
		52	}
		53
		54	/*
		55	* Global properties
		56	*/
		57	static struct drm_prop_enum_list drm_dpms_enum_list[] =
		58	{ { DRM_MODE_DPMS_ON, "On" },
		59	{ DRM_MODE_DPMS_STANDBY, "Standby" },
		60	{ DRM_MODE_DPMS_SUSPEND, "Suspend" },
		61	{ DRM_MODE_DPMS_OFF, "Off" }
		62	};
		63
		64	DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
		65
		66	/*
		67	* Optional properties
		68	*/
		69	static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
		70	{
1179	serge	71	{ DRM_MODE_SCALE_NONE, "None" },
		72	{ DRM_MODE_SCALE_FULLSCREEN, "Full" },
		73	{ DRM_MODE_SCALE_CENTER, "Center" },
		74	{ DRM_MODE_SCALE_ASPECT, "Full aspect" },
1123	serge	75	};
		76
		77	static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
		78	{
		79	{ DRM_MODE_DITHERING_OFF, "Off" },
		80	{ DRM_MODE_DITHERING_ON, "On" },
		81	};
		82
		83	/*
		84	* Non-global properties, but "required" for certain connectors.
		85	*/
		86	static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
		87	{
		88	{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
		89	{ DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
		90	{ DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
		91	};
		92
		93	DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
		94
		95	static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
		96	{
		97	{ DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
		98	{ DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
		99	{ DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
		100	};
		101
		102	DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
		103	drm_dvi_i_subconnector_enum_list)
		104
		105	static struct drm_prop_enum_list drm_tv_select_enum_list[] =
		106	{
		107	{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
		108	{ DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
		109	{ DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
		110	{ DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
1179	serge	111	{ DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
1123	serge	112	};
		113
		114	DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
		115
		116	static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
		117	{
		118	{ DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
		119	{ DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
		120	{ DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
		121	{ DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
1179	serge	122	{ DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
1123	serge	123	};
		124
		125	DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
		126	drm_tv_subconnector_enum_list)
		127
1321	serge	128	static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
		129	{ DRM_MODE_DIRTY_OFF, "Off" },
		130	{ DRM_MODE_DIRTY_ON, "On" },
		131	{ DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
		132	};
		133
		134	DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
		135	drm_dirty_info_enum_list)
		136
1123	serge	137	struct drm_conn_prop_enum_list {
		138	int type;
		139	char *name;
		140	int count;
		141	};
		142
		143	/*
		144	* Connector and encoder types.
		145	*/
		146	static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
		147	{ { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
		148	{ DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
		149	{ DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
		150	{ DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
		151	{ DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
		152	{ DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
		153	{ DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
		154	{ DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
		155	{ DRM_MODE_CONNECTOR_Component, "Component", 0 },
		156	{ DRM_MODE_CONNECTOR_9PinDIN, "9-pin DIN", 0 },
		157	{ DRM_MODE_CONNECTOR_DisplayPort, "DisplayPort", 0 },
		158	{ DRM_MODE_CONNECTOR_HDMIA, "HDMI Type A", 0 },
		159	{ DRM_MODE_CONNECTOR_HDMIB, "HDMI Type B", 0 },
1179	serge	160	{ DRM_MODE_CONNECTOR_TV, "TV", 0 },
1123	serge	161	};
		162
		163	static struct drm_prop_enum_list drm_encoder_enum_list[] =
		164	{ { DRM_MODE_ENCODER_NONE, "None" },
		165	{ DRM_MODE_ENCODER_DAC, "DAC" },
		166	{ DRM_MODE_ENCODER_TMDS, "TMDS" },
		167	{ DRM_MODE_ENCODER_LVDS, "LVDS" },
		168	{ DRM_MODE_ENCODER_TVDAC, "TV" },
		169	};
		170
		171	char drm_get_encoder_name(struct drm_encoder encoder)
		172	{
		173	static char buf[32];
		174
		175	snprintf(buf, 32, "%s-%d",
		176	drm_encoder_enum_list[encoder->encoder_type].name,
		177	encoder->base.id);
		178	return buf;
		179	}
1179	serge	180	EXPORT_SYMBOL(drm_get_encoder_name);
1123	serge	181
		182	char drm_get_connector_name(struct drm_connector connector)
		183	{
		184	static char buf[32];
		185
		186	snprintf(buf, 32, "%s-%d",
		187	drm_connector_enum_list[connector->connector_type].name,
		188	connector->connector_type_id);
		189	return buf;
		190	}
		191	EXPORT_SYMBOL(drm_get_connector_name);
		192
		193	char *drm_get_connector_status_name(enum drm_connector_status status)
		194	{
		195	if (status == connector_status_connected)
		196	return "connected";
		197	else if (status == connector_status_disconnected)
		198	return "disconnected";
		199	else
		200	return "unknown";
		201	}
		202
		203	/**
		204	* drm_mode_object_get - allocate a new identifier
		205	* @dev: DRM device
		206	* @ptr: object pointer, used to generate unique ID
		207	* @type: object type
		208	*
		209	* LOCKING:
		210	*
		211	* Create a unique identifier based on @ptr in @dev's identifier space. Used
		212	* for tracking modes, CRTCs and connectors.
		213	*
		214	* RETURNS:
		215	* New unique (relative to other objects in @dev) integer identifier for the
		216	* object.
		217	*/
		218	static int drm_mode_object_get(struct drm_device *dev,
		219	struct drm_mode_object *obj, uint32_t obj_type)
		220	{
		221	int new_id = 0;
		222	int ret;
		223
		224	again:
		225	if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
		226	DRM_ERROR("Ran out memory getting a mode number\n");
		227	return -EINVAL;
		228	}
		229
1179	serge	230	mutex_lock(&dev->mode_config.idr_mutex);
1123	serge	231	ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
1179	serge	232	mutex_unlock(&dev->mode_config.idr_mutex);
1123	serge	233	if (ret == -EAGAIN)
1179	serge	234	goto again;
1123	serge	235
		236	obj->id = new_id;
		237	obj->type = obj_type;
1179	serge	238	return 0;
1123	serge	239	}
		240
		241	/**
		242	* drm_mode_object_put - free an identifer
		243	* @dev: DRM device
		244	* @id: ID to free
		245	*
		246	* LOCKING:
		247	* Caller must hold DRM mode_config lock.
		248	*
		249	* Free @id from @dev's unique identifier pool.
		250	*/
		251	static void drm_mode_object_put(struct drm_device *dev,
		252	struct drm_mode_object *object)
		253	{
1179	serge	254	mutex_lock(&dev->mode_config.idr_mutex);
1123	serge	255	idr_remove(&dev->mode_config.crtc_idr, object->id);
1179	serge	256	mutex_unlock(&dev->mode_config.idr_mutex);
1123	serge	257	}
		258
1321	serge	259	struct drm_mode_object drm_mode_object_find(struct drm_device dev,
		260	uint32_t id, uint32_t type)
1123	serge	261	{
		262	struct drm_mode_object *obj = NULL;
		263
1179	serge	264	mutex_lock(&dev->mode_config.idr_mutex);
1123	serge	265	obj = idr_find(&dev->mode_config.crtc_idr, id);
		266	if (!obj \|\| (obj->type != type) \|\| (obj->id != id))
		267	obj = NULL;
1179	serge	268	mutex_unlock(&dev->mode_config.idr_mutex);
1123	serge	269
		270	return obj;
		271	}
		272	EXPORT_SYMBOL(drm_mode_object_find);
		273
		274	/**
		275	* drm_framebuffer_init - initialize a framebuffer
		276	* @dev: DRM device
		277	*
		278	* LOCKING:
		279	* Caller must hold mode config lock.
		280	*
		281	* Allocates an ID for the framebuffer's parent mode object, sets its mode
		282	* functions & device file and adds it to the master fd list.
		283	*
		284	* RETURNS:
1321	serge	285	* Zero on success, error code on failure.
1123	serge	286	*/
		287	int drm_framebuffer_init(struct drm_device dev, struct drm_framebuffer fb,
		288	const struct drm_framebuffer_funcs *funcs)
		289	{
		290	int ret;
1179	serge	291
1123	serge	292	ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
		293	if (ret) {
		294	return ret;
		295	}
		296
		297	fb->dev = dev;
		298	fb->funcs = funcs;
		299	dev->mode_config.num_fb++;
		300	list_add(&fb->head, &dev->mode_config.fb_list);
		301
		302	return 0;
		303	}
		304	EXPORT_SYMBOL(drm_framebuffer_init);
		305
		306	/**
		307	* drm_framebuffer_cleanup - remove a framebuffer object
		308	* @fb: framebuffer to remove
		309	*
		310	* LOCKING:
		311	* Caller must hold mode config lock.
		312	*
		313	* Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
		314	* it, setting it to NULL.
		315	*/
		316	void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
		317	{
		318	struct drm_device *dev = fb->dev;
		319	struct drm_crtc *crtc;
1179	serge	320	struct drm_mode_set set;
		321	int ret;
1123	serge	322
		323	/* remove from any CRTC */
		324	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1179	serge	325	if (crtc->fb == fb) {
		326	/* should turn off the crtc */
		327	memset(&set, 0, sizeof(struct drm_mode_set));
		328	set.crtc = crtc;
		329	set.fb = NULL;
		330	ret = crtc->funcs->set_config(&set);
		331	if (ret)
		332	DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
		333	}
1123	serge	334	}
		335
		336	drm_mode_object_put(dev, &fb->base);
		337	list_del(&fb->head);
		338	dev->mode_config.num_fb--;
		339	}
		340	EXPORT_SYMBOL(drm_framebuffer_cleanup);
		341
		342	/**
		343	* drm_crtc_init - Initialise a new CRTC object
		344	* @dev: DRM device
		345	* @crtc: CRTC object to init
		346	* @funcs: callbacks for the new CRTC
		347	*
		348	* LOCKING:
		349	* Caller must hold mode config lock.
		350	*
		351	* Inits a new object created as base part of an driver crtc object.
		352	*/
		353	void drm_crtc_init(struct drm_device dev, struct drm_crtc crtc,
		354	const struct drm_crtc_funcs *funcs)
		355	{
		356	crtc->dev = dev;
		357	crtc->funcs = funcs;
		358
1179	serge	359	mutex_lock(&dev->mode_config.mutex);
1123	serge	360	drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
		361
		362	list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
		363	dev->mode_config.num_crtc++;
1179	serge	364	mutex_unlock(&dev->mode_config.mutex);
1123	serge	365	}
		366	EXPORT_SYMBOL(drm_crtc_init);
		367
		368	/**
		369	* drm_crtc_cleanup - Cleans up the core crtc usage.
		370	* @crtc: CRTC to cleanup
		371	*
		372	* LOCKING:
		373	* Caller must hold mode config lock.
		374	*
		375	* Cleanup @crtc. Removes from drm modesetting space
		376	* does NOT free object, caller does that.
		377	*/
		378	void drm_crtc_cleanup(struct drm_crtc *crtc)
		379	{
		380	struct drm_device *dev = crtc->dev;
		381
		382	if (crtc->gamma_store) {
		383	kfree(crtc->gamma_store);
		384	crtc->gamma_store = NULL;
		385	}
		386
		387	drm_mode_object_put(dev, &crtc->base);
		388	list_del(&crtc->head);
		389	dev->mode_config.num_crtc--;
		390	}
		391	EXPORT_SYMBOL(drm_crtc_cleanup);
		392
		393	/**
		394	* drm_mode_probed_add - add a mode to a connector's probed mode list
		395	* @connector: connector the new mode
		396	* @mode: mode data
		397	*
		398	* LOCKING:
		399	* Caller must hold mode config lock.
		400	*
		401	* Add @mode to @connector's mode list for later use.
		402	*/
		403	void drm_mode_probed_add(struct drm_connector *connector,
		404	struct drm_display_mode *mode)
		405	{
		406	list_add(&mode->head, &connector->probed_modes);
		407	}
		408	EXPORT_SYMBOL(drm_mode_probed_add);
		409
		410	/**
		411	* drm_mode_remove - remove and free a mode
		412	* @connector: connector list to modify
		413	* @mode: mode to remove
		414	*
		415	* LOCKING:
		416	* Caller must hold mode config lock.
		417	*
		418	* Remove @mode from @connector's mode list, then free it.
		419	*/
		420	void drm_mode_remove(struct drm_connector *connector,
		421	struct drm_display_mode *mode)
		422	{
		423	list_del(&mode->head);
		424	kfree(mode);
		425	}
		426	EXPORT_SYMBOL(drm_mode_remove);
		427
		428	/**
		429	* drm_connector_init - Init a preallocated connector
		430	* @dev: DRM device
		431	* @connector: the connector to init
		432	* @funcs: callbacks for this connector
		433	* @name: user visible name of the connector
		434	*
		435	* LOCKING:
		436	* Caller must hold @dev's mode_config lock.
		437	*
		438	* Initialises a preallocated connector. Connectors should be
		439	* subclassed as part of driver connector objects.
		440	*/
		441	void drm_connector_init(struct drm_device *dev,
		442	struct drm_connector *connector,
		443	const struct drm_connector_funcs *funcs,
		444	int connector_type)
		445	{
1179	serge	446	mutex_lock(&dev->mode_config.mutex);
1123	serge	447
		448	connector->dev = dev;
		449	connector->funcs = funcs;
		450	drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
		451	connector->connector_type = connector_type;
		452	connector->connector_type_id =
		453	++drm_connector_enum_list[connector_type].count; /* TODO */
		454	INIT_LIST_HEAD(&connector->user_modes);
		455	INIT_LIST_HEAD(&connector->probed_modes);
		456	INIT_LIST_HEAD(&connector->modes);
		457	connector->edid_blob_ptr = NULL;
		458
		459	list_add_tail(&connector->head, &dev->mode_config.connector_list);
		460	dev->mode_config.num_connector++;
		461
		462	drm_connector_attach_property(connector,
		463	dev->mode_config.edid_property, 0);
		464
		465	drm_connector_attach_property(connector,
		466	dev->mode_config.dpms_property, 0);
		467
1179	serge	468	mutex_unlock(&dev->mode_config.mutex);
1123	serge	469	}
		470	EXPORT_SYMBOL(drm_connector_init);
		471
		472	/**
		473	* drm_connector_cleanup - cleans up an initialised connector
		474	* @connector: connector to cleanup
		475	*
		476	* LOCKING:
		477	* Caller must hold @dev's mode_config lock.
		478	*
		479	* Cleans up the connector but doesn't free the object.
		480	*/
		481	void drm_connector_cleanup(struct drm_connector *connector)
		482	{
		483	struct drm_device *dev = connector->dev;
		484	struct drm_display_mode mode, t;
		485
		486	list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
		487	drm_mode_remove(connector, mode);
		488
		489	list_for_each_entry_safe(mode, t, &connector->modes, head)
		490	drm_mode_remove(connector, mode);
		491
		492	list_for_each_entry_safe(mode, t, &connector->user_modes, head)
		493	drm_mode_remove(connector, mode);
		494
1221	serge	495	kfree(connector->fb_helper_private);
1179	serge	496	mutex_lock(&dev->mode_config.mutex);
1123	serge	497	drm_mode_object_put(dev, &connector->base);
		498	list_del(&connector->head);
1179	serge	499	mutex_unlock(&dev->mode_config.mutex);
1123	serge	500	}
		501	EXPORT_SYMBOL(drm_connector_cleanup);
		502
		503	void drm_encoder_init(struct drm_device *dev,
		504	struct drm_encoder *encoder,
		505	const struct drm_encoder_funcs *funcs,
		506	int encoder_type)
		507	{
1179	serge	508	mutex_lock(&dev->mode_config.mutex);
1123	serge	509
		510	encoder->dev = dev;
		511
		512	drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
		513	encoder->encoder_type = encoder_type;
		514	encoder->funcs = funcs;
		515
		516	list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
		517	dev->mode_config.num_encoder++;
		518
1179	serge	519	mutex_unlock(&dev->mode_config.mutex);
1123	serge	520	}
		521	EXPORT_SYMBOL(drm_encoder_init);
		522
		523	void drm_encoder_cleanup(struct drm_encoder *encoder)
		524	{
		525	struct drm_device *dev = encoder->dev;
1179	serge	526	mutex_lock(&dev->mode_config.mutex);
1123	serge	527	drm_mode_object_put(dev, &encoder->base);
		528	list_del(&encoder->head);
1179	serge	529	mutex_unlock(&dev->mode_config.mutex);
1123	serge	530	}
		531	EXPORT_SYMBOL(drm_encoder_cleanup);
		532
		533	/**
		534	* drm_mode_create - create a new display mode
		535	* @dev: DRM device
		536	*
		537	* LOCKING:
		538	* Caller must hold DRM mode_config lock.
		539	*
		540	* Create a new drm_display_mode, give it an ID, and return it.
		541	*
		542	* RETURNS:
		543	* Pointer to new mode on success, NULL on error.
		544	*/
		545	struct drm_display_mode drm_mode_create(struct drm_device dev)
		546	{
		547	struct drm_display_mode *nmode;
		548
		549	nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
		550	if (!nmode)
		551	return NULL;
		552
		553	drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
		554	return nmode;
		555	}
		556	EXPORT_SYMBOL(drm_mode_create);
		557
		558	/**
		559	* drm_mode_destroy - remove a mode
		560	* @dev: DRM device
		561	* @mode: mode to remove
		562	*
		563	* LOCKING:
		564	* Caller must hold mode config lock.
		565	*
		566	* Free @mode's unique identifier, then free it.
		567	*/
		568	void drm_mode_destroy(struct drm_device dev, struct drm_display_mode mode)
		569	{
		570	drm_mode_object_put(dev, &mode->base);
		571
		572	kfree(mode);
		573	}
		574	EXPORT_SYMBOL(drm_mode_destroy);
		575
		576	static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
		577	{
		578	struct drm_property *edid;
		579	struct drm_property *dpms;
		580	int i;
		581
		582	/*
		583	* Standard properties (apply to all connectors)
		584	*/
		585	edid = drm_property_create(dev, DRM_MODE_PROP_BLOB \|
		586	DRM_MODE_PROP_IMMUTABLE,
		587	"EDID", 0);
		588	dev->mode_config.edid_property = edid;
		589
		590	dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
		591	"DPMS", ARRAY_SIZE(drm_dpms_enum_list));
		592	for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
		593	drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
		594	drm_dpms_enum_list[i].name);
		595	dev->mode_config.dpms_property = dpms;
		596
		597	return 0;
		598	}
		599
		600	/**
		601	* drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
		602	* @dev: DRM device
		603	*
		604	* Called by a driver the first time a DVI-I connector is made.
		605	*/
		606	int drm_mode_create_dvi_i_properties(struct drm_device *dev)
		607	{
		608	struct drm_property *dvi_i_selector;
		609	struct drm_property *dvi_i_subconnector;
		610	int i;
		611
		612	if (dev->mode_config.dvi_i_select_subconnector_property)
		613	return 0;
		614
		615	dvi_i_selector =
		616	drm_property_create(dev, DRM_MODE_PROP_ENUM,
		617	"select subconnector",
		618	ARRAY_SIZE(drm_dvi_i_select_enum_list));
		619	for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
		620	drm_property_add_enum(dvi_i_selector, i,
		621	drm_dvi_i_select_enum_list[i].type,
		622	drm_dvi_i_select_enum_list[i].name);
		623	dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
		624
		625	dvi_i_subconnector =
		626	drm_property_create(dev, DRM_MODE_PROP_ENUM \|
		627	DRM_MODE_PROP_IMMUTABLE,
		628	"subconnector",
		629	ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
		630	for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
		631	drm_property_add_enum(dvi_i_subconnector, i,
		632	drm_dvi_i_subconnector_enum_list[i].type,
		633	drm_dvi_i_subconnector_enum_list[i].name);
		634	dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
		635
		636	return 0;
		637	}
		638	EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
		639
		640	/**
		641	* drm_create_tv_properties - create TV specific connector properties
		642	* @dev: DRM device
		643	* @num_modes: number of different TV formats (modes) supported
		644	* @modes: array of pointers to strings containing name of each format
		645	*
		646	* Called by a driver's TV initialization routine, this function creates
		647	* the TV specific connector properties for a given device. Caller is
		648	* responsible for allocating a list of format names and passing them to
		649	* this routine.
		650	*/
		651	int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
		652	char *modes[])
		653	{
		654	struct drm_property *tv_selector;
		655	struct drm_property *tv_subconnector;
		656	int i;
		657
		658	if (dev->mode_config.tv_select_subconnector_property)
		659	return 0;
		660
		661	/*
		662	* Basic connector properties
		663	*/
		664	tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
		665	"select subconnector",
		666	ARRAY_SIZE(drm_tv_select_enum_list));
		667	for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
		668	drm_property_add_enum(tv_selector, i,
		669	drm_tv_select_enum_list[i].type,
		670	drm_tv_select_enum_list[i].name);
		671	dev->mode_config.tv_select_subconnector_property = tv_selector;
		672
		673	tv_subconnector =
		674	drm_property_create(dev, DRM_MODE_PROP_ENUM \|
		675	DRM_MODE_PROP_IMMUTABLE, "subconnector",
		676	ARRAY_SIZE(drm_tv_subconnector_enum_list));
		677	for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
		678	drm_property_add_enum(tv_subconnector, i,
		679	drm_tv_subconnector_enum_list[i].type,
		680	drm_tv_subconnector_enum_list[i].name);
		681	dev->mode_config.tv_subconnector_property = tv_subconnector;
		682
		683	/*
		684	* Other, TV specific properties: margins & TV modes.
		685	*/
		686	dev->mode_config.tv_left_margin_property =
		687	drm_property_create(dev, DRM_MODE_PROP_RANGE,
		688	"left margin", 2);
		689	dev->mode_config.tv_left_margin_property->values[0] = 0;
		690	dev->mode_config.tv_left_margin_property->values[1] = 100;
		691
		692	dev->mode_config.tv_right_margin_property =
		693	drm_property_create(dev, DRM_MODE_PROP_RANGE,
		694	"right margin", 2);
		695	dev->mode_config.tv_right_margin_property->values[0] = 0;
		696	dev->mode_config.tv_right_margin_property->values[1] = 100;
		697
		698	dev->mode_config.tv_top_margin_property =
		699	drm_property_create(dev, DRM_MODE_PROP_RANGE,
		700	"top margin", 2);
		701	dev->mode_config.tv_top_margin_property->values[0] = 0;
		702	dev->mode_config.tv_top_margin_property->values[1] = 100;
		703
		704	dev->mode_config.tv_bottom_margin_property =
		705	drm_property_create(dev, DRM_MODE_PROP_RANGE,
		706	"bottom margin", 2);
		707	dev->mode_config.tv_bottom_margin_property->values[0] = 0;
		708	dev->mode_config.tv_bottom_margin_property->values[1] = 100;
		709
		710	dev->mode_config.tv_mode_property =
		711	drm_property_create(dev, DRM_MODE_PROP_ENUM,
		712	"mode", num_modes);
		713	for (i = 0; i < num_modes; i++)
		714	drm_property_add_enum(dev->mode_config.tv_mode_property, i,
		715	i, modes[i]);
		716
1179	serge	717	dev->mode_config.tv_brightness_property =
		718	drm_property_create(dev, DRM_MODE_PROP_RANGE,
		719	"brightness", 2);
		720	dev->mode_config.tv_brightness_property->values[0] = 0;
		721	dev->mode_config.tv_brightness_property->values[1] = 100;
		722
		723	dev->mode_config.tv_contrast_property =
		724	drm_property_create(dev, DRM_MODE_PROP_RANGE,
		725	"contrast", 2);
		726	dev->mode_config.tv_contrast_property->values[0] = 0;
		727	dev->mode_config.tv_contrast_property->values[1] = 100;
		728
		729	dev->mode_config.tv_flicker_reduction_property =
		730	drm_property_create(dev, DRM_MODE_PROP_RANGE,
		731	"flicker reduction", 2);
		732	dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
		733	dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
		734
		735	dev->mode_config.tv_overscan_property =
		736	drm_property_create(dev, DRM_MODE_PROP_RANGE,
		737	"overscan", 2);
		738	dev->mode_config.tv_overscan_property->values[0] = 0;
		739	dev->mode_config.tv_overscan_property->values[1] = 100;
		740
		741	dev->mode_config.tv_saturation_property =
		742	drm_property_create(dev, DRM_MODE_PROP_RANGE,
		743	"saturation", 2);
		744	dev->mode_config.tv_saturation_property->values[0] = 0;
		745	dev->mode_config.tv_saturation_property->values[1] = 100;
		746
		747	dev->mode_config.tv_hue_property =
		748	drm_property_create(dev, DRM_MODE_PROP_RANGE,
		749	"hue", 2);
		750	dev->mode_config.tv_hue_property->values[0] = 0;
		751	dev->mode_config.tv_hue_property->values[1] = 100;
		752
1123	serge	753	return 0;
		754	}
		755	EXPORT_SYMBOL(drm_mode_create_tv_properties);
		756
		757	/**
		758	* drm_mode_create_scaling_mode_property - create scaling mode property
		759	* @dev: DRM device
		760	*
		761	* Called by a driver the first time it's needed, must be attached to desired
		762	* connectors.
		763	*/
		764	int drm_mode_create_scaling_mode_property(struct drm_device *dev)
		765	{
		766	struct drm_property *scaling_mode;
		767	int i;
		768
		769	if (dev->mode_config.scaling_mode_property)
		770	return 0;
		771
		772	scaling_mode =
		773	drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
		774	ARRAY_SIZE(drm_scaling_mode_enum_list));
		775	for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
		776	drm_property_add_enum(scaling_mode, i,
		777	drm_scaling_mode_enum_list[i].type,
		778	drm_scaling_mode_enum_list[i].name);
		779
		780	dev->mode_config.scaling_mode_property = scaling_mode;
		781
		782	return 0;
		783	}
		784	EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
		785
		786	/**
		787	* drm_mode_create_dithering_property - create dithering property
		788	* @dev: DRM device
		789	*
		790	* Called by a driver the first time it's needed, must be attached to desired
		791	* connectors.
		792	*/
		793	int drm_mode_create_dithering_property(struct drm_device *dev)
		794	{
		795	struct drm_property *dithering_mode;
		796	int i;
		797
		798	if (dev->mode_config.dithering_mode_property)
		799	return 0;
		800
		801	dithering_mode =
		802	drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
		803	ARRAY_SIZE(drm_dithering_mode_enum_list));
		804	for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
		805	drm_property_add_enum(dithering_mode, i,
		806	drm_dithering_mode_enum_list[i].type,
		807	drm_dithering_mode_enum_list[i].name);
		808	dev->mode_config.dithering_mode_property = dithering_mode;
		809
		810	return 0;
		811	}
		812	EXPORT_SYMBOL(drm_mode_create_dithering_property);
		813
		814	/**
1321	serge	815	* drm_mode_create_dirty_property - create dirty property
		816	* @dev: DRM device
		817	*
		818	* Called by a driver the first time it's needed, must be attached to desired
		819	* connectors.
		820	*/
		821	int drm_mode_create_dirty_info_property(struct drm_device *dev)
		822	{
		823	struct drm_property *dirty_info;
		824	int i;
		825
		826	if (dev->mode_config.dirty_info_property)
		827	return 0;
		828
		829	dirty_info =
		830	drm_property_create(dev, DRM_MODE_PROP_ENUM \|
		831	DRM_MODE_PROP_IMMUTABLE,
		832	"dirty",
		833	ARRAY_SIZE(drm_dirty_info_enum_list));
		834	for (i = 0; i < ARRAY_SIZE(drm_dirty_info_enum_list); i++)
		835	drm_property_add_enum(dirty_info, i,
		836	drm_dirty_info_enum_list[i].type,
		837	drm_dirty_info_enum_list[i].name);
		838	dev->mode_config.dirty_info_property = dirty_info;
		839
		840	return 0;
		841	}
		842	EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
		843
		844	/**
1123	serge	845	* drm_mode_config_init - initialize DRM mode_configuration structure
		846	* @dev: DRM device
		847	*
		848	* LOCKING:
		849	* None, should happen single threaded at init time.
		850	*
		851	* Initialize @dev's mode_config structure, used for tracking the graphics
		852	* configuration of @dev.
		853	*/
		854	void drm_mode_config_init(struct drm_device *dev)
		855	{
		856	// mutex_init(&dev->mode_config.mutex);
		857	// mutex_init(&dev->mode_config.idr_mutex);
		858	INIT_LIST_HEAD(&dev->mode_config.fb_list);
		859	INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list);
		860	INIT_LIST_HEAD(&dev->mode_config.crtc_list);
		861	INIT_LIST_HEAD(&dev->mode_config.connector_list);
		862	INIT_LIST_HEAD(&dev->mode_config.encoder_list);
		863	INIT_LIST_HEAD(&dev->mode_config.property_list);
		864	INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
		865	idr_init(&dev->mode_config.crtc_idr);
		866
1179	serge	867	mutex_lock(&dev->mode_config.mutex);
1123	serge	868	drm_mode_create_standard_connector_properties(dev);
1179	serge	869	mutex_unlock(&dev->mode_config.mutex);
1123	serge	870
		871	/* Just to be sure */
		872	dev->mode_config.num_fb = 0;
		873	dev->mode_config.num_connector = 0;
		874	dev->mode_config.num_crtc = 0;
		875	dev->mode_config.num_encoder = 0;
		876	}
		877	EXPORT_SYMBOL(drm_mode_config_init);
		878
		879	int drm_mode_group_init(struct drm_device dev, struct drm_mode_group group)
		880	{
		881	uint32_t total_objects = 0;
		882
		883	total_objects += dev->mode_config.num_crtc;
		884	total_objects += dev->mode_config.num_connector;
		885	total_objects += dev->mode_config.num_encoder;
		886
		887	if (total_objects == 0)
		888	return -EINVAL;
		889
		890	group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
		891	if (!group->id_list)
		892	return -ENOMEM;
		893
		894	group->num_crtcs = 0;
		895	group->num_connectors = 0;
		896	group->num_encoders = 0;
		897	return 0;
		898	}
		899
		900	int drm_mode_group_init_legacy_group(struct drm_device *dev,
		901	struct drm_mode_group *group)
		902	{
		903	struct drm_crtc *crtc;
		904	struct drm_encoder *encoder;
		905	struct drm_connector *connector;
		906	int ret;
		907
		908	if ((ret = drm_mode_group_init(dev, group)))
		909	return ret;
		910
		911	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
		912	group->id_list[group->num_crtcs++] = crtc->base.id;
		913
		914	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
		915	group->id_list[group->num_crtcs + group->num_encoders++] =
		916	encoder->base.id;
		917
		918	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
		919	group->id_list[group->num_crtcs + group->num_encoders +
		920	group->num_connectors++] = connector->base.id;
		921
		922	return 0;
		923	}
		924
		925	/**
		926	* drm_mode_config_cleanup - free up DRM mode_config info
		927	* @dev: DRM device
		928	*
		929	* LOCKING:
		930	* Caller must hold mode config lock.
		931	*
		932	* Free up all the connectors and CRTCs associated with this DRM device, then
		933	* free up the framebuffers and associated buffer objects.
		934	*
		935	* FIXME: cleanup any dangling user buffer objects too
		936	*/
		937	void drm_mode_config_cleanup(struct drm_device *dev)
		938	{
		939	struct drm_connector connector, ot;
		940	struct drm_crtc crtc, ct;
		941	struct drm_encoder encoder, enct;
		942	struct drm_framebuffer fb, fbt;
		943	struct drm_property property, pt;
		944
		945	list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
		946	head) {
		947	encoder->funcs->destroy(encoder);
		948	}
		949
		950	list_for_each_entry_safe(connector, ot,
		951	&dev->mode_config.connector_list, head) {
		952	connector->funcs->destroy(connector);
		953	}
		954
		955	list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
		956	head) {
		957	drm_property_destroy(dev, property);
		958	}
		959
		960	list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
		961	fb->funcs->destroy(fb);
		962	}
		963
		964	list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
		965	crtc->funcs->destroy(crtc);
		966	}
		967
		968	}
		969	EXPORT_SYMBOL(drm_mode_config_cleanup);
		970
		971	/**
		972	* drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
		973	* @out: drm_mode_modeinfo struct to return to the user
		974	* @in: drm_display_mode to use
		975	*
		976	* LOCKING:
		977	* None.
		978	*
		979	* Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
		980	* the user.
		981	*/
		982	void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
		983	struct drm_display_mode *in)
		984	{
		985	out->clock = in->clock;
		986	out->hdisplay = in->hdisplay;
		987	out->hsync_start = in->hsync_start;
		988	out->hsync_end = in->hsync_end;
		989	out->htotal = in->htotal;
		990	out->hskew = in->hskew;
		991	out->vdisplay = in->vdisplay;
		992	out->vsync_start = in->vsync_start;
		993	out->vsync_end = in->vsync_end;
		994	out->vtotal = in->vtotal;
		995	out->vscan = in->vscan;
		996	out->vrefresh = in->vrefresh;
		997	out->flags = in->flags;
		998	out->type = in->type;
		999	strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
		1000	out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
		1001	}
		1002
		1003	/**
		1004	* drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
		1005	* @out: drm_display_mode to return to the user
		1006	* @in: drm_mode_modeinfo to use
		1007	*
		1008	* LOCKING:
		1009	* None.
		1010	*
		1011	* Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
		1012	* the caller.
		1013	*/
		1014	void drm_crtc_convert_umode(struct drm_display_mode *out,
		1015	struct drm_mode_modeinfo *in)
		1016	{
		1017	out->clock = in->clock;
		1018	out->hdisplay = in->hdisplay;
		1019	out->hsync_start = in->hsync_start;
		1020	out->hsync_end = in->hsync_end;
		1021	out->htotal = in->htotal;
		1022	out->hskew = in->hskew;
		1023	out->vdisplay = in->vdisplay;
		1024	out->vsync_start = in->vsync_start;
		1025	out->vsync_end = in->vsync_end;
		1026	out->vtotal = in->vtotal;
		1027	out->vscan = in->vscan;
		1028	out->vrefresh = in->vrefresh;
		1029	out->flags = in->flags;
		1030	out->type = in->type;
		1031	strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
		1032	out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
		1033	}
		1034
		1035
		1036	#if 0
		1037	/**
		1038	* drm_mode_getresources - get graphics configuration
		1039	* @inode: inode from the ioctl
		1040	* @filp: file * from the ioctl
		1041	* @cmd: cmd from ioctl
		1042	* @arg: arg from ioctl
		1043	*
		1044	* LOCKING:
		1045	* Takes mode config lock.
		1046	*
		1047	* Construct a set of configuration description structures and return
		1048	* them to the user, including CRTC, connector and framebuffer configuration.
		1049	*
		1050	* Called by the user via ioctl.
		1051	*
		1052	* RETURNS:
		1053	* Zero on success, errno on failure.
		1054	*/
		1055	int drm_mode_getresources(struct drm_device dev, void data,
		1056	struct drm_file *file_priv)
		1057	{
		1058	struct drm_mode_card_res *card_res = data;
		1059	struct list_head *lh;
		1060	struct drm_framebuffer *fb;
		1061	struct drm_connector *connector;
		1062	struct drm_crtc *crtc;
		1063	struct drm_encoder *encoder;
		1064	int ret = 0;
		1065	int connector_count = 0;
		1066	int crtc_count = 0;
		1067	int fb_count = 0;
		1068	int encoder_count = 0;
		1069	int copied = 0, i;
		1070	uint32_t __user *fb_id;
		1071	uint32_t __user *crtc_id;
		1072	uint32_t __user *connector_id;
		1073	uint32_t __user *encoder_id;
		1074	struct drm_mode_group *mode_group;
		1075
		1076	mutex_lock(&dev->mode_config.mutex);
		1077
		1078	/*
		1079	* For the non-control nodes we need to limit the list of resources
		1080	* by IDs in the group list for this node
		1081	*/
		1082	list_for_each(lh, &file_priv->fbs)
		1083	fb_count++;
		1084
		1085	mode_group = &file_priv->master->minor->mode_group;
		1086	if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
		1087
		1088	list_for_each(lh, &dev->mode_config.crtc_list)
		1089	crtc_count++;
		1090
		1091	list_for_each(lh, &dev->mode_config.connector_list)
		1092	connector_count++;
		1093
		1094	list_for_each(lh, &dev->mode_config.encoder_list)
		1095	encoder_count++;
		1096	} else {
		1097
		1098	crtc_count = mode_group->num_crtcs;
		1099	connector_count = mode_group->num_connectors;
		1100	encoder_count = mode_group->num_encoders;
		1101	}
		1102
		1103	card_res->max_height = dev->mode_config.max_height;
		1104	card_res->min_height = dev->mode_config.min_height;
		1105	card_res->max_width = dev->mode_config.max_width;
		1106	card_res->min_width = dev->mode_config.min_width;
		1107
		1108	/* handle this in 4 parts */
		1109	/* FBs */
		1110	if (card_res->count_fbs >= fb_count) {
		1111	copied = 0;
		1112	fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
		1113	list_for_each_entry(fb, &file_priv->fbs, head) {
		1114	if (put_user(fb->base.id, fb_id + copied)) {
		1115	ret = -EFAULT;
		1116	goto out;
		1117	}
		1118	copied++;
		1119	}
		1120	}
		1121	card_res->count_fbs = fb_count;
		1122
		1123	/* CRTCs */
		1124	if (card_res->count_crtcs >= crtc_count) {
		1125	copied = 0;
		1126	crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
		1127	if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
		1128	list_for_each_entry(crtc, &dev->mode_config.crtc_list,
		1129	head) {
1179	serge	1130	DRM_DEBUG_KMS("CRTC ID is %d\n", crtc->base.id);
1123	serge	1131	if (put_user(crtc->base.id, crtc_id + copied)) {
		1132	ret = -EFAULT;
		1133	goto out;
		1134	}
		1135	copied++;
		1136	}
		1137	} else {
		1138	for (i = 0; i < mode_group->num_crtcs; i++) {
		1139	if (put_user(mode_group->id_list[i],
		1140	crtc_id + copied)) {
		1141	ret = -EFAULT;
		1142	goto out;
		1143	}
		1144	copied++;
		1145	}
		1146	}
		1147	}
		1148	card_res->count_crtcs = crtc_count;
		1149
		1150	/* Encoders */
		1151	if (card_res->count_encoders >= encoder_count) {
		1152	copied = 0;
		1153	encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
		1154	if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
		1155	list_for_each_entry(encoder,
		1156	&dev->mode_config.encoder_list,
		1157	head) {
1179	serge	1158	DRM_DEBUG_KMS("ENCODER ID is %d\n",
1123	serge	1159	encoder->base.id);
		1160	if (put_user(encoder->base.id, encoder_id +
		1161	copied)) {
		1162	ret = -EFAULT;
		1163	goto out;
		1164	}
		1165	copied++;
		1166	}
		1167	} else {
		1168	for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
		1169	if (put_user(mode_group->id_list[i],
		1170	encoder_id + copied)) {
		1171	ret = -EFAULT;
		1172	goto out;
		1173	}
		1174	copied++;
		1175	}
		1176
		1177	}
		1178	}
		1179	card_res->count_encoders = encoder_count;
		1180
		1181	/* Connectors */
		1182	if (card_res->count_connectors >= connector_count) {
		1183	copied = 0;
		1184	connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
		1185	if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
		1186	list_for_each_entry(connector,
		1187	&dev->mode_config.connector_list,
		1188	head) {
1179	serge	1189	DRM_DEBUG_KMS("CONNECTOR ID is %d\n",
1123	serge	1190	connector->base.id);
		1191	if (put_user(connector->base.id,
		1192	connector_id + copied)) {
		1193	ret = -EFAULT;
		1194	goto out;
		1195	}
		1196	copied++;
		1197	}
		1198	} else {
		1199	int start = mode_group->num_crtcs +
		1200	mode_group->num_encoders;
		1201	for (i = start; i < start + mode_group->num_connectors; i++) {
		1202	if (put_user(mode_group->id_list[i],
		1203	connector_id + copied)) {
		1204	ret = -EFAULT;
		1205	goto out;
		1206	}
		1207	copied++;
		1208	}
		1209	}
		1210	}
		1211	card_res->count_connectors = connector_count;
		1212
1179	serge	1213	DRM_DEBUG_KMS("Counted %d %d %d\n", card_res->count_crtcs,
1123	serge	1214	card_res->count_connectors, card_res->count_encoders);
		1215
		1216	out:
		1217	mutex_unlock(&dev->mode_config.mutex);
		1218	return ret;
		1219	}
		1220
		1221	/**
		1222	* drm_mode_getcrtc - get CRTC configuration
		1223	* @inode: inode from the ioctl
		1224	* @filp: file * from the ioctl
		1225	* @cmd: cmd from ioctl
		1226	* @arg: arg from ioctl
		1227	*
		1228	* LOCKING:
		1229	* Caller? (FIXME)
		1230	*
		1231	* Construct a CRTC configuration structure to return to the user.
		1232	*
		1233	* Called by the user via ioctl.
		1234	*
		1235	* RETURNS:
		1236	* Zero on success, errno on failure.
		1237	*/
		1238	int drm_mode_getcrtc(struct drm_device *dev,
		1239	void data, struct drm_file file_priv)
		1240	{
		1241	struct drm_mode_crtc *crtc_resp = data;
		1242	struct drm_crtc *crtc;
		1243	struct drm_mode_object *obj;
		1244	int ret = 0;
		1245
		1246	mutex_lock(&dev->mode_config.mutex);
		1247
		1248	obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
		1249	DRM_MODE_OBJECT_CRTC);
		1250	if (!obj) {
		1251	ret = -EINVAL;
		1252	goto out;
		1253	}
		1254	crtc = obj_to_crtc(obj);
		1255
		1256	crtc_resp->x = crtc->x;
		1257	crtc_resp->y = crtc->y;
		1258	crtc_resp->gamma_size = crtc->gamma_size;
		1259	if (crtc->fb)
		1260	crtc_resp->fb_id = crtc->fb->base.id;
		1261	else
		1262	crtc_resp->fb_id = 0;
		1263
		1264	if (crtc->enabled) {
		1265
		1266	drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
		1267	crtc_resp->mode_valid = 1;
		1268
		1269	} else {
		1270	crtc_resp->mode_valid = 0;
		1271	}
		1272
		1273	out:
		1274	mutex_unlock(&dev->mode_config.mutex);
		1275	return ret;
		1276	}
		1277
		1278	/**
		1279	* drm_mode_getconnector - get connector configuration
		1280	* @inode: inode from the ioctl
		1281	* @filp: file * from the ioctl
		1282	* @cmd: cmd from ioctl
		1283	* @arg: arg from ioctl
		1284	*
		1285	* LOCKING:
		1286	* Caller? (FIXME)
		1287	*
		1288	* Construct a connector configuration structure to return to the user.
		1289	*
		1290	* Called by the user via ioctl.
		1291	*
		1292	* RETURNS:
		1293	* Zero on success, errno on failure.
		1294	*/
		1295	int drm_mode_getconnector(struct drm_device dev, void data,
		1296	struct drm_file *file_priv)
		1297	{
		1298	struct drm_mode_get_connector *out_resp = data;
		1299	struct drm_mode_object *obj;
		1300	struct drm_connector *connector;
		1301	struct drm_display_mode *mode;
		1302	int mode_count = 0;
		1303	int props_count = 0;
		1304	int encoders_count = 0;
		1305	int ret = 0;
		1306	int copied = 0;
		1307	int i;
		1308	struct drm_mode_modeinfo u_mode;
		1309	struct drm_mode_modeinfo __user *mode_ptr;
		1310	uint32_t __user *prop_ptr;
		1311	uint64_t __user *prop_values;
		1312	uint32_t __user *encoder_ptr;
		1313
		1314	memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
		1315
1179	serge	1316	DRM_DEBUG_KMS("connector id %d:\n", out_resp->connector_id);
1123	serge	1317
		1318	mutex_lock(&dev->mode_config.mutex);
		1319
		1320	obj = drm_mode_object_find(dev, out_resp->connector_id,
		1321	DRM_MODE_OBJECT_CONNECTOR);
		1322	if (!obj) {
		1323	ret = -EINVAL;
		1324	goto out;
		1325	}
		1326	connector = obj_to_connector(obj);
		1327
		1328	for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
		1329	if (connector->property_ids[i] != 0) {
		1330	props_count++;
		1331	}
		1332	}
		1333
		1334	for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
		1335	if (connector->encoder_ids[i] != 0) {
		1336	encoders_count++;
		1337	}
		1338	}
		1339
		1340	if (out_resp->count_modes == 0) {
		1341	connector->funcs->fill_modes(connector,
		1342	dev->mode_config.max_width,
		1343	dev->mode_config.max_height);
		1344	}
		1345
		1346	/* delayed so we get modes regardless of pre-fill_modes state */
		1347	list_for_each_entry(mode, &connector->modes, head)
		1348	mode_count++;
		1349
		1350	out_resp->connector_id = connector->base.id;
		1351	out_resp->connector_type = connector->connector_type;
		1352	out_resp->connector_type_id = connector->connector_type_id;
		1353	out_resp->mm_width = connector->display_info.width_mm;
		1354	out_resp->mm_height = connector->display_info.height_mm;
		1355	out_resp->subpixel = connector->display_info.subpixel_order;
		1356	out_resp->connection = connector->status;
		1357	if (connector->encoder)
		1358	out_resp->encoder_id = connector->encoder->base.id;
		1359	else
		1360	out_resp->encoder_id = 0;
		1361
		1362	/*
		1363	* This ioctl is called twice, once to determine how much space is
		1364	* needed, and the 2nd time to fill it.
		1365	*/
		1366	if ((out_resp->count_modes >= mode_count) && mode_count) {
		1367	copied = 0;
		1368	mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
		1369	list_for_each_entry(mode, &connector->modes, head) {
		1370	drm_crtc_convert_to_umode(&u_mode, mode);
		1371	if (copy_to_user(mode_ptr + copied,
		1372	&u_mode, sizeof(u_mode))) {
		1373	ret = -EFAULT;
		1374	goto out;
		1375	}
		1376	copied++;
		1377	}
		1378	}
		1379	out_resp->count_modes = mode_count;
		1380
		1381	if ((out_resp->count_props >= props_count) && props_count) {
		1382	copied = 0;
		1383	prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
		1384	prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
		1385	for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
		1386	if (connector->property_ids[i] != 0) {
		1387	if (put_user(connector->property_ids[i],
		1388	prop_ptr + copied)) {
		1389	ret = -EFAULT;
		1390	goto out;
		1391	}
		1392
		1393	if (put_user(connector->property_values[i],
		1394	prop_values + copied)) {
		1395	ret = -EFAULT;
		1396	goto out;
		1397	}
		1398	copied++;
		1399	}
		1400	}
		1401	}
		1402	out_resp->count_props = props_count;
		1403
		1404	if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
		1405	copied = 0;
		1406	encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
		1407	for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
		1408	if (connector->encoder_ids[i] != 0) {
		1409	if (put_user(connector->encoder_ids[i],
		1410	encoder_ptr + copied)) {
		1411	ret = -EFAULT;
		1412	goto out;
		1413	}
		1414	copied++;
		1415	}
		1416	}
		1417	}
		1418	out_resp->count_encoders = encoders_count;
		1419
		1420	out:
		1421	mutex_unlock(&dev->mode_config.mutex);
		1422	return ret;
		1423	}
		1424
		1425	int drm_mode_getencoder(struct drm_device dev, void data,
		1426	struct drm_file *file_priv)
		1427	{
		1428	struct drm_mode_get_encoder *enc_resp = data;
		1429	struct drm_mode_object *obj;
		1430	struct drm_encoder *encoder;
		1431	int ret = 0;
		1432
		1433	mutex_lock(&dev->mode_config.mutex);
		1434	obj = drm_mode_object_find(dev, enc_resp->encoder_id,
		1435	DRM_MODE_OBJECT_ENCODER);
		1436	if (!obj) {
		1437	ret = -EINVAL;
		1438	goto out;
		1439	}
		1440	encoder = obj_to_encoder(obj);
		1441
		1442	if (encoder->crtc)
		1443	enc_resp->crtc_id = encoder->crtc->base.id;
		1444	else
		1445	enc_resp->crtc_id = 0;
		1446	enc_resp->encoder_type = encoder->encoder_type;
		1447	enc_resp->encoder_id = encoder->base.id;
		1448	enc_resp->possible_crtcs = encoder->possible_crtcs;
		1449	enc_resp->possible_clones = encoder->possible_clones;
		1450
		1451	out:
		1452	mutex_unlock(&dev->mode_config.mutex);
		1453	return ret;
		1454	}
		1455
		1456	/**
		1457	* drm_mode_setcrtc - set CRTC configuration
		1458	* @inode: inode from the ioctl
		1459	* @filp: file * from the ioctl
		1460	* @cmd: cmd from ioctl
		1461	* @arg: arg from ioctl
		1462	*
		1463	* LOCKING:
		1464	* Caller? (FIXME)
		1465	*
		1466	* Build a new CRTC configuration based on user request.
		1467	*
		1468	* Called by the user via ioctl.
		1469	*
		1470	* RETURNS:
		1471	* Zero on success, errno on failure.
		1472	*/
		1473	int drm_mode_setcrtc(struct drm_device dev, void data,
		1474	struct drm_file *file_priv)
		1475	{
		1476	struct drm_mode_config *config = &dev->mode_config;
		1477	struct drm_mode_crtc *crtc_req = data;
		1478	struct drm_mode_object *obj;
		1479	struct drm_crtc crtc, crtcfb;
		1480	struct drm_connector *connector_set = NULL, connector;
		1481	struct drm_framebuffer *fb = NULL;
		1482	struct drm_display_mode *mode = NULL;
		1483	struct drm_mode_set set;
		1484	uint32_t __user *set_connectors_ptr;
		1485	int ret = 0;
		1486	int i;
		1487
		1488	mutex_lock(&dev->mode_config.mutex);
		1489	obj = drm_mode_object_find(dev, crtc_req->crtc_id,
		1490	DRM_MODE_OBJECT_CRTC);
		1491	if (!obj) {
1179	serge	1492	DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1123	serge	1493	ret = -EINVAL;
		1494	goto out;
		1495	}
		1496	crtc = obj_to_crtc(obj);
		1497
		1498	if (crtc_req->mode_valid) {
		1499	/* If we have a mode we need a framebuffer. */
		1500	/* If we pass -1, set the mode with the currently bound fb */
		1501	if (crtc_req->fb_id == -1) {
		1502	list_for_each_entry(crtcfb,
		1503	&dev->mode_config.crtc_list, head) {
		1504	if (crtcfb == crtc) {
1179	serge	1505	DRM_DEBUG_KMS("Using current fb for "
		1506	"setmode\n");
1123	serge	1507	fb = crtc->fb;
		1508	}
		1509	}
		1510	} else {
		1511	obj = drm_mode_object_find(dev, crtc_req->fb_id,
		1512	DRM_MODE_OBJECT_FB);
		1513	if (!obj) {
1179	serge	1514	DRM_DEBUG_KMS("Unknown FB ID%d\n",
		1515	crtc_req->fb_id);
1123	serge	1516	ret = -EINVAL;
		1517	goto out;
		1518	}
		1519	fb = obj_to_fb(obj);
		1520	}
		1521
		1522	mode = drm_mode_create(dev);
		1523	drm_crtc_convert_umode(mode, &crtc_req->mode);
		1524	drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
		1525	}
		1526
		1527	if (crtc_req->count_connectors == 0 && mode) {
1179	serge	1528	DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1123	serge	1529	ret = -EINVAL;
		1530	goto out;
		1531	}
		1532
1179	serge	1533	if (crtc_req->count_connectors > 0 && (!mode \|\| !fb)) {
		1534	DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1123	serge	1535	crtc_req->count_connectors);
		1536	ret = -EINVAL;
		1537	goto out;
		1538	}
		1539
		1540	if (crtc_req->count_connectors > 0) {
		1541	u32 out_id;
		1542
		1543	/* Avoid unbounded kernel memory allocation */
		1544	if (crtc_req->count_connectors > config->num_connector) {
		1545	ret = -EINVAL;
		1546	goto out;
		1547	}
		1548
		1549	connector_set = kmalloc(crtc_req->count_connectors *
		1550	sizeof(struct drm_connector *),
		1551	GFP_KERNEL);
		1552	if (!connector_set) {
		1553	ret = -ENOMEM;
		1554	goto out;
		1555	}
		1556
		1557	for (i = 0; i < crtc_req->count_connectors; i++) {
		1558	set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
		1559	if (get_user(out_id, &set_connectors_ptr[i])) {
		1560	ret = -EFAULT;
		1561	goto out;
		1562	}
		1563
		1564	obj = drm_mode_object_find(dev, out_id,
		1565	DRM_MODE_OBJECT_CONNECTOR);
		1566	if (!obj) {
1179	serge	1567	DRM_DEBUG_KMS("Connector id %d unknown\n",
		1568	out_id);
1123	serge	1569	ret = -EINVAL;
		1570	goto out;
		1571	}
		1572	connector = obj_to_connector(obj);
		1573
		1574	connector_set[i] = connector;
		1575	}
		1576	}
		1577
		1578	set.crtc = crtc;
		1579	set.x = crtc_req->x;
		1580	set.y = crtc_req->y;
		1581	set.mode = mode;
		1582	set.connectors = connector_set;
		1583	set.num_connectors = crtc_req->count_connectors;
1179	serge	1584	set.fb = fb;
1123	serge	1585	ret = crtc->funcs->set_config(&set);
		1586
		1587	out:
		1588	kfree(connector_set);
		1589	mutex_unlock(&dev->mode_config.mutex);
		1590	return ret;
		1591	}
		1592
		1593	int drm_mode_cursor_ioctl(struct drm_device *dev,
		1594	void data, struct drm_file file_priv)
		1595	{
		1596	struct drm_mode_cursor *req = data;
		1597	struct drm_mode_object *obj;
		1598	struct drm_crtc *crtc;
		1599	int ret = 0;
		1600
		1601	if (!req->flags) {
		1602	DRM_ERROR("no operation set\n");
		1603	return -EINVAL;
		1604	}
		1605
		1606	mutex_lock(&dev->mode_config.mutex);
		1607	obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
		1608	if (!obj) {
1179	serge	1609	DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1123	serge	1610	ret = -EINVAL;
		1611	goto out;
		1612	}
		1613	crtc = obj_to_crtc(obj);
		1614
		1615	if (req->flags & DRM_MODE_CURSOR_BO) {
		1616	if (!crtc->funcs->cursor_set) {
		1617	DRM_ERROR("crtc does not support cursor\n");
		1618	ret = -ENXIO;
		1619	goto out;
		1620	}
		1621	/* Turns off the cursor if handle is 0 */
		1622	ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
		1623	req->width, req->height);
		1624	}
		1625
		1626	if (req->flags & DRM_MODE_CURSOR_MOVE) {
		1627	if (crtc->funcs->cursor_move) {
		1628	ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
		1629	} else {
		1630	DRM_ERROR("crtc does not support cursor\n");
		1631	ret = -EFAULT;
		1632	goto out;
		1633	}
		1634	}
		1635	out:
		1636	mutex_unlock(&dev->mode_config.mutex);
		1637	return ret;
		1638	}
		1639
		1640	/**
		1641	* drm_mode_addfb - add an FB to the graphics configuration
		1642	* @inode: inode from the ioctl
		1643	* @filp: file * from the ioctl
		1644	* @cmd: cmd from ioctl
		1645	* @arg: arg from ioctl
		1646	*
		1647	* LOCKING:
		1648	* Takes mode config lock.
		1649	*
		1650	* Add a new FB to the specified CRTC, given a user request.
		1651	*
		1652	* Called by the user via ioctl.
		1653	*
		1654	* RETURNS:
		1655	* Zero on success, errno on failure.
		1656	*/
		1657	int drm_mode_addfb(struct drm_device *dev,
		1658	void data, struct drm_file file_priv)
		1659	{
		1660	struct drm_mode_fb_cmd *r = data;
		1661	struct drm_mode_config *config = &dev->mode_config;
		1662	struct drm_framebuffer *fb;
		1663	int ret = 0;
		1664
		1665	if ((config->min_width > r->width) \|\| (r->width > config->max_width)) {
		1666	DRM_ERROR("mode new framebuffer width not within limits\n");
		1667	return -EINVAL;
		1668	}
		1669	if ((config->min_height > r->height) \|\| (r->height > config->max_height)) {
		1670	DRM_ERROR("mode new framebuffer height not within limits\n");
		1671	return -EINVAL;
		1672	}
		1673
		1674	mutex_lock(&dev->mode_config.mutex);
		1675
		1676	/* TODO check buffer is sufficently large */
		1677	/* TODO setup destructor callback */
		1678
		1679	fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
		1680	if (!fb) {
		1681	DRM_ERROR("could not create framebuffer\n");
		1682	ret = -EINVAL;
		1683	goto out;
		1684	}
		1685
		1686	r->fb_id = fb->base.id;
		1687	list_add(&fb->filp_head, &file_priv->fbs);
		1688
		1689	out:
		1690	mutex_unlock(&dev->mode_config.mutex);
		1691	return ret;
		1692	}
		1693
		1694	/**
		1695	* drm_mode_rmfb - remove an FB from the configuration
		1696	* @inode: inode from the ioctl
		1697	* @filp: file * from the ioctl
		1698	* @cmd: cmd from ioctl
		1699	* @arg: arg from ioctl
		1700	*
		1701	* LOCKING:
		1702	* Takes mode config lock.
		1703	*
		1704	* Remove the FB specified by the user.
		1705	*
		1706	* Called by the user via ioctl.
		1707	*
		1708	* RETURNS:
		1709	* Zero on success, errno on failure.
		1710	*/
		1711	int drm_mode_rmfb(struct drm_device *dev,
		1712	void data, struct drm_file file_priv)
		1713	{
		1714	struct drm_mode_object *obj;
		1715	struct drm_framebuffer *fb = NULL;
		1716	struct drm_framebuffer *fbl = NULL;
		1717	uint32_t *id = data;
		1718	int ret = 0;
		1719	int found = 0;
		1720
		1721	mutex_lock(&dev->mode_config.mutex);
		1722	obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
		1723	/* TODO check that we realy get a framebuffer back. */
		1724	if (!obj) {
		1725	DRM_ERROR("mode invalid framebuffer id\n");
		1726	ret = -EINVAL;
		1727	goto out;
		1728	}
		1729	fb = obj_to_fb(obj);
		1730
		1731	list_for_each_entry(fbl, &file_priv->fbs, filp_head)
		1732	if (fb == fbl)
		1733	found = 1;
		1734
		1735	if (!found) {
		1736	DRM_ERROR("tried to remove a fb that we didn't own\n");
		1737	ret = -EINVAL;
		1738	goto out;
		1739	}
		1740
		1741	/* TODO release all crtc connected to the framebuffer */
		1742	/* TODO unhock the destructor from the buffer object */
		1743
		1744	list_del(&fb->filp_head);
		1745	fb->funcs->destroy(fb);
		1746
		1747	out:
		1748	mutex_unlock(&dev->mode_config.mutex);
		1749	return ret;
		1750	}
		1751
		1752	/**
		1753	* drm_mode_getfb - get FB info
		1754	* @inode: inode from the ioctl
		1755	* @filp: file * from the ioctl
		1756	* @cmd: cmd from ioctl
		1757	* @arg: arg from ioctl
		1758	*
		1759	* LOCKING:
		1760	* Caller? (FIXME)
		1761	*
		1762	* Lookup the FB given its ID and return info about it.
		1763	*
		1764	* Called by the user via ioctl.
		1765	*
		1766	* RETURNS:
		1767	* Zero on success, errno on failure.
		1768	*/
		1769	int drm_mode_getfb(struct drm_device *dev,
		1770	void data, struct drm_file file_priv)
		1771	{
		1772	struct drm_mode_fb_cmd *r = data;
		1773	struct drm_mode_object *obj;
		1774	struct drm_framebuffer *fb;
		1775	int ret = 0;
		1776
		1777	mutex_lock(&dev->mode_config.mutex);
		1778	obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
		1779	if (!obj) {
		1780	DRM_ERROR("invalid framebuffer id\n");
		1781	ret = -EINVAL;
		1782	goto out;
		1783	}
		1784	fb = obj_to_fb(obj);
		1785
		1786	r->height = fb->height;
		1787	r->width = fb->width;
		1788	r->depth = fb->depth;
		1789	r->bpp = fb->bits_per_pixel;
		1790	r->pitch = fb->pitch;
		1791	fb->funcs->create_handle(fb, file_priv, &r->handle);
		1792
		1793	out:
		1794	mutex_unlock(&dev->mode_config.mutex);
		1795	return ret;
		1796	}
		1797
		1798	/**
		1799	* drm_fb_release - remove and free the FBs on this file
		1800	* @filp: file * from the ioctl
		1801	*
		1802	* LOCKING:
		1803	* Takes mode config lock.
		1804	*
		1805	* Destroy all the FBs associated with @filp.
		1806	*
		1807	* Called by the user via ioctl.
		1808	*
		1809	* RETURNS:
		1810	* Zero on success, errno on failure.
		1811	*/
		1812	void drm_fb_release(struct drm_file *priv)
		1813	{
		1814	struct drm_device *dev = priv->minor->dev;
		1815	struct drm_framebuffer fb, tfb;
		1816
		1817	mutex_lock(&dev->mode_config.mutex);
		1818	list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
		1819	list_del(&fb->filp_head);
		1820	fb->funcs->destroy(fb);
		1821	}
		1822	mutex_unlock(&dev->mode_config.mutex);
		1823	}
		1824	#endif
		1825
		1826	/**
		1827	* drm_mode_attachmode - add a mode to the user mode list
		1828	* @dev: DRM device
		1829	* @connector: connector to add the mode to
		1830	* @mode: mode to add
		1831	*
		1832	* Add @mode to @connector's user mode list.
		1833	*/
		1834	static int drm_mode_attachmode(struct drm_device *dev,
		1835	struct drm_connector *connector,
		1836	struct drm_display_mode *mode)
		1837	{
		1838	int ret = 0;
		1839
		1840	list_add_tail(&mode->head, &connector->user_modes);
		1841	return ret;
		1842	}
		1843
		1844	int drm_mode_attachmode_crtc(struct drm_device dev, struct drm_crtc crtc,
		1845	struct drm_display_mode *mode)
		1846	{
		1847	struct drm_connector *connector;
		1848	int ret = 0;
		1849	struct drm_display_mode *dup_mode;
		1850	int need_dup = 0;
		1851	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
		1852	if (!connector->encoder)
		1853	break;
		1854	if (connector->encoder->crtc == crtc) {
		1855	if (need_dup)
		1856	dup_mode = drm_mode_duplicate(dev, mode);
		1857	else
		1858	dup_mode = mode;
		1859	ret = drm_mode_attachmode(dev, connector, dup_mode);
		1860	if (ret)
		1861	return ret;
		1862	need_dup = 1;
		1863	}
		1864	}
		1865	return 0;
		1866	}
		1867	EXPORT_SYMBOL(drm_mode_attachmode_crtc);
		1868
		1869	static int drm_mode_detachmode(struct drm_device *dev,
		1870	struct drm_connector *connector,
		1871	struct drm_display_mode *mode)
		1872	{
		1873	int found = 0;
		1874	int ret = 0;
		1875	struct drm_display_mode match_mode, t;
		1876
		1877	list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
		1878	if (drm_mode_equal(match_mode, mode)) {
		1879	list_del(&match_mode->head);
		1880	drm_mode_destroy(dev, match_mode);
		1881	found = 1;
		1882	break;
		1883	}
		1884	}
		1885
		1886	if (!found)
		1887	ret = -EINVAL;
		1888
		1889	return ret;
		1890	}
		1891
		1892	int drm_mode_detachmode_crtc(struct drm_device dev, struct drm_display_mode mode)
		1893	{
		1894	struct drm_connector *connector;
		1895
		1896	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
		1897	drm_mode_detachmode(dev, connector, mode);
		1898	}
		1899	return 0;
		1900	}
		1901	EXPORT_SYMBOL(drm_mode_detachmode_crtc);
		1902
		1903	#if 0
		1904
		1905	/**
		1906	* drm_fb_attachmode - Attach a user mode to an connector
		1907	* @inode: inode from the ioctl
		1908	* @filp: file * from the ioctl
		1909	* @cmd: cmd from ioctl
		1910	* @arg: arg from ioctl
		1911	*
		1912	* This attaches a user specified mode to an connector.
		1913	* Called by the user via ioctl.
		1914	*
		1915	* RETURNS:
		1916	* Zero on success, errno on failure.
		1917	*/
		1918	int drm_mode_attachmode_ioctl(struct drm_device *dev,
		1919	void data, struct drm_file file_priv)
		1920	{
		1921	struct drm_mode_mode_cmd *mode_cmd = data;
		1922	struct drm_connector *connector;
		1923	struct drm_display_mode *mode;
		1924	struct drm_mode_object *obj;
		1925	struct drm_mode_modeinfo *umode = &mode_cmd->mode;
		1926	int ret = 0;
		1927
		1928	mutex_lock(&dev->mode_config.mutex);
		1929
		1930	obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
		1931	if (!obj) {
		1932	ret = -EINVAL;
		1933	goto out;
		1934	}
		1935	connector = obj_to_connector(obj);
		1936
		1937	mode = drm_mode_create(dev);
		1938	if (!mode) {
		1939	ret = -ENOMEM;
		1940	goto out;
		1941	}
		1942
		1943	drm_crtc_convert_umode(mode, umode);
		1944
		1945	ret = drm_mode_attachmode(dev, connector, mode);
		1946	out:
		1947	mutex_unlock(&dev->mode_config.mutex);
		1948	return ret;
		1949	}
		1950
		1951
		1952	/**
		1953	* drm_fb_detachmode - Detach a user specified mode from an connector
		1954	* @inode: inode from the ioctl
		1955	* @filp: file * from the ioctl
		1956	* @cmd: cmd from ioctl
		1957	* @arg: arg from ioctl
		1958	*
		1959	* Called by the user via ioctl.
		1960	*
		1961	* RETURNS:
		1962	* Zero on success, errno on failure.
		1963	*/
		1964	int drm_mode_detachmode_ioctl(struct drm_device *dev,
		1965	void data, struct drm_file file_priv)
		1966	{
		1967	struct drm_mode_object *obj;
		1968	struct drm_mode_mode_cmd *mode_cmd = data;
		1969	struct drm_connector *connector;
		1970	struct drm_display_mode mode;
		1971	struct drm_mode_modeinfo *umode = &mode_cmd->mode;
		1972	int ret = 0;
		1973
		1974	mutex_lock(&dev->mode_config.mutex);
		1975
		1976	obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
		1977	if (!obj) {
		1978	ret = -EINVAL;
		1979	goto out;
		1980	}
		1981	connector = obj_to_connector(obj);
		1982
		1983	drm_crtc_convert_umode(&mode, umode);
		1984	ret = drm_mode_detachmode(dev, connector, &mode);
		1985	out:
		1986	mutex_unlock(&dev->mode_config.mutex);
		1987	return ret;
		1988	}
		1989	#endif
		1990
		1991	struct drm_property drm_property_create(struct drm_device dev, int flags,
		1992	const char *name, int num_values)
		1993	{
		1994	struct drm_property *property = NULL;
		1995
		1996	property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
		1997	if (!property)
		1998	return NULL;
		1999
		2000	if (num_values) {
		2001	property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
		2002	if (!property->values)
		2003	goto fail;
		2004	}
		2005
		2006	drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
		2007	property->flags = flags;
		2008	property->num_values = num_values;
		2009	INIT_LIST_HEAD(&property->enum_blob_list);
		2010
		2011	if (name)
		2012	strncpy(property->name, name, DRM_PROP_NAME_LEN);
		2013
		2014	list_add_tail(&property->head, &dev->mode_config.property_list);
		2015	return property;
		2016	fail:
		2017	kfree(property);
		2018	return NULL;
		2019	}
		2020	EXPORT_SYMBOL(drm_property_create);
		2021
		2022	int drm_property_add_enum(struct drm_property *property, int index,
		2023	uint64_t value, const char *name)
		2024	{
		2025	struct drm_property_enum *prop_enum;
		2026
		2027	if (!(property->flags & DRM_MODE_PROP_ENUM))
		2028	return -EINVAL;
		2029
		2030	if (!list_empty(&property->enum_blob_list)) {
		2031	list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
		2032	if (prop_enum->value == value) {
		2033	strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
		2034	prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
		2035	return 0;
		2036	}
		2037	}
		2038	}
		2039
		2040	prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
		2041	if (!prop_enum)
		2042	return -ENOMEM;
		2043
		2044	strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
		2045	prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
		2046	prop_enum->value = value;
		2047
		2048	property->values[index] = value;
		2049	list_add_tail(&prop_enum->head, &property->enum_blob_list);
		2050	return 0;
		2051	}
		2052	EXPORT_SYMBOL(drm_property_add_enum);
		2053
		2054	void drm_property_destroy(struct drm_device dev, struct drm_property property)
		2055	{
		2056	struct drm_property_enum prop_enum, pt;
		2057
		2058	list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
		2059	list_del(&prop_enum->head);
		2060	kfree(prop_enum);
		2061	}
		2062
		2063	if (property->num_values)
		2064	kfree(property->values);
		2065	drm_mode_object_put(dev, &property->base);
		2066	list_del(&property->head);
		2067	kfree(property);
		2068	}
		2069	EXPORT_SYMBOL(drm_property_destroy);
		2070
		2071	int drm_connector_attach_property(struct drm_connector *connector,
		2072	struct drm_property *property, uint64_t init_val)
		2073	{
		2074	int i;
		2075
		2076	for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
		2077	if (connector->property_ids[i] == 0) {
		2078	connector->property_ids[i] = property->base.id;
		2079	connector->property_values[i] = init_val;
		2080	break;
		2081	}
		2082	}
		2083
		2084	if (i == DRM_CONNECTOR_MAX_PROPERTY)
		2085	return -EINVAL;
		2086	return 0;
		2087	}
		2088	EXPORT_SYMBOL(drm_connector_attach_property);
		2089
		2090	int drm_connector_property_set_value(struct drm_connector *connector,
		2091	struct drm_property *property, uint64_t value)
		2092	{
		2093	int i;
		2094
		2095	for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
		2096	if (connector->property_ids[i] == property->base.id) {
		2097	connector->property_values[i] = value;
		2098	break;
		2099	}
		2100	}
		2101
		2102	if (i == DRM_CONNECTOR_MAX_PROPERTY)
		2103	return -EINVAL;
		2104	return 0;
		2105	}
		2106	EXPORT_SYMBOL(drm_connector_property_set_value);
		2107
		2108	int drm_connector_property_get_value(struct drm_connector *connector,
		2109	struct drm_property property, uint64_t val)
		2110	{
		2111	int i;
		2112
		2113	for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
		2114	if (connector->property_ids[i] == property->base.id) {
		2115	*val = connector->property_values[i];
		2116	break;
		2117	}
		2118	}
		2119
		2120	if (i == DRM_CONNECTOR_MAX_PROPERTY)
		2121	return -EINVAL;
		2122	return 0;
		2123	}
		2124	EXPORT_SYMBOL(drm_connector_property_get_value);
		2125
		2126	#if 0
		2127	int drm_mode_getproperty_ioctl(struct drm_device *dev,
		2128	void data, struct drm_file file_priv)
		2129	{
		2130	struct drm_mode_object *obj;
		2131	struct drm_mode_get_property *out_resp = data;
		2132	struct drm_property *property;
		2133	int enum_count = 0;
		2134	int blob_count = 0;
		2135	int value_count = 0;
		2136	int ret = 0, i;
		2137	int copied;
		2138	struct drm_property_enum *prop_enum;
		2139	struct drm_mode_property_enum __user *enum_ptr;
		2140	struct drm_property_blob *prop_blob;
		2141	uint32_t *blob_id_ptr;
		2142	uint64_t __user *values_ptr;
		2143	uint32_t __user *blob_length_ptr;
		2144
1179	serge	2145	mutex_lock(&dev->mode_config.mutex);
1123	serge	2146	obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
		2147	if (!obj) {
		2148	ret = -EINVAL;
		2149	goto done;
		2150	}
		2151	property = obj_to_property(obj);
		2152
		2153	if (property->flags & DRM_MODE_PROP_ENUM) {
		2154	list_for_each_entry(prop_enum, &property->enum_blob_list, head)
		2155	enum_count++;
		2156	} else if (property->flags & DRM_MODE_PROP_BLOB) {
		2157	list_for_each_entry(prop_blob, &property->enum_blob_list, head)
		2158	blob_count++;
		2159	}
		2160
		2161	value_count = property->num_values;
		2162
		2163	strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
		2164	out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
		2165	out_resp->flags = property->flags;
		2166
		2167	if ((out_resp->count_values >= value_count) && value_count) {
		2168	values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
		2169	for (i = 0; i < value_count; i++) {
		2170	if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
		2171	ret = -EFAULT;
		2172	goto done;
		2173	}
		2174	}
		2175	}
		2176	out_resp->count_values = value_count;
		2177
		2178	if (property->flags & DRM_MODE_PROP_ENUM) {
		2179	if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
		2180	copied = 0;
		2181	enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
		2182	list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
		2183
		2184	if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
		2185	ret = -EFAULT;
		2186	goto done;
		2187	}
		2188
		2189	if (copy_to_user(&enum_ptr[copied].name,
		2190	&prop_enum->name, DRM_PROP_NAME_LEN)) {
		2191	ret = -EFAULT;
		2192	goto done;
		2193	}
		2194	copied++;
		2195	}
		2196	}
		2197	out_resp->count_enum_blobs = enum_count;
		2198	}
		2199
		2200	if (property->flags & DRM_MODE_PROP_BLOB) {
		2201	if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
		2202	copied = 0;
		2203	blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
		2204	blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
		2205
		2206	list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
		2207	if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
		2208	ret = -EFAULT;
		2209	goto done;
		2210	}
		2211
		2212	if (put_user(prop_blob->length, blob_length_ptr + copied)) {
		2213	ret = -EFAULT;
		2214	goto done;
		2215	}
		2216
		2217	copied++;
		2218	}
		2219	}
		2220	out_resp->count_enum_blobs = blob_count;
		2221	}
		2222	done:
1179	serge	2223	mutex_unlock(&dev->mode_config.mutex);
1123	serge	2224	return ret;
		2225	}
		2226	#endif
		2227
		2228	static struct drm_property_blob drm_property_create_blob(struct drm_device dev, int length,
		2229	void *data)
		2230	{
		2231	struct drm_property_blob *blob;
		2232
		2233	if (!length \|\| !data)
		2234	return NULL;
		2235
		2236	blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
		2237	if (!blob)
		2238	return NULL;
		2239
		2240	blob->data = (void )((char )blob + sizeof(struct drm_property_blob));
		2241	blob->length = length;
		2242
		2243	memcpy(blob->data, data, length);
		2244
		2245	drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
		2246
		2247	list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
		2248	return blob;
		2249	}
		2250
		2251	static void drm_property_destroy_blob(struct drm_device *dev,
		2252	struct drm_property_blob *blob)
		2253	{
		2254	drm_mode_object_put(dev, &blob->base);
		2255	list_del(&blob->head);
		2256	kfree(blob);
		2257	}
		2258
		2259	#if 0
		2260	int drm_mode_getblob_ioctl(struct drm_device *dev,
		2261	void data, struct drm_file file_priv)
		2262	{
		2263	struct drm_mode_object *obj;
		2264	struct drm_mode_get_blob *out_resp = data;
		2265	struct drm_property_blob *blob;
		2266	int ret = 0;
		2267	void *blob_ptr;
		2268
		2269	mutex_lock(&dev->mode_config.mutex);
		2270	obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
		2271	if (!obj) {
		2272	ret = -EINVAL;
		2273	goto done;
		2274	}
		2275	blob = obj_to_blob(obj);
		2276
		2277	if (out_resp->length == blob->length) {
		2278	blob_ptr = (void *)(unsigned long)out_resp->data;
		2279	if (copy_to_user(blob_ptr, blob->data, blob->length)){
		2280	ret = -EFAULT;
		2281	goto done;
		2282	}
		2283	}
		2284	out_resp->length = blob->length;
		2285
		2286	done:
		2287	mutex_unlock(&dev->mode_config.mutex);
		2288	return ret;
		2289	}
		2290	#endif
		2291
		2292	int drm_mode_connector_update_edid_property(struct drm_connector *connector,
		2293	struct edid *edid)
		2294	{
		2295	struct drm_device *dev = connector->dev;
		2296	int ret = 0;
		2297
		2298	if (connector->edid_blob_ptr)
		2299	drm_property_destroy_blob(dev, connector->edid_blob_ptr);
		2300
		2301	/* Delete edid, when there is none. */
		2302	if (!edid) {
		2303	connector->edid_blob_ptr = NULL;
		2304	ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
		2305	return ret;
		2306	}
		2307
		2308	connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 128, edid);
		2309
		2310	ret = drm_connector_property_set_value(connector,
		2311	dev->mode_config.edid_property,
		2312	connector->edid_blob_ptr->base.id);
		2313
		2314	return ret;
		2315	}
		2316	EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
		2317
		2318	#if 0
		2319	int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
		2320	void data, struct drm_file file_priv)
		2321	{
		2322	struct drm_mode_connector_set_property *out_resp = data;
		2323	struct drm_mode_object *obj;
		2324	struct drm_property *property;
		2325	struct drm_connector *connector;
		2326	int ret = -EINVAL;
		2327	int i;
		2328
1179	serge	2329	mutex_lock(&dev->mode_config.mutex);
1123	serge	2330
		2331	obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
		2332	if (!obj) {
		2333	goto out;
		2334	}
		2335	connector = obj_to_connector(obj);
		2336
		2337	for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
		2338	if (connector->property_ids[i] == out_resp->prop_id)
		2339	break;
		2340	}
		2341
		2342	if (i == DRM_CONNECTOR_MAX_PROPERTY) {
		2343	goto out;
		2344	}
		2345
		2346	obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
		2347	if (!obj) {
		2348	goto out;
		2349	}
		2350	property = obj_to_property(obj);
		2351
		2352	if (property->flags & DRM_MODE_PROP_IMMUTABLE)
		2353	goto out;
		2354
		2355	if (property->flags & DRM_MODE_PROP_RANGE) {
		2356	if (out_resp->value < property->values[0])
		2357	goto out;
		2358
		2359	if (out_resp->value > property->values[1])
		2360	goto out;
		2361	} else {
		2362	int found = 0;
		2363	for (i = 0; i < property->num_values; i++) {
		2364	if (property->values[i] == out_resp->value) {
		2365	found = 1;
		2366	break;
		2367	}
		2368	}
		2369	if (!found) {
		2370	goto out;
		2371	}
		2372	}
		2373
		2374	/* Do DPMS ourselves */
		2375	if (property == connector->dev->mode_config.dpms_property) {
		2376	if (connector->funcs->dpms)
		2377	(*connector->funcs->dpms)(connector, (int) out_resp->value);
		2378	ret = 0;
		2379	} else if (connector->funcs->set_property)
		2380	ret = connector->funcs->set_property(connector, property, out_resp->value);
		2381
1321	serge	2382	/* store the property value if successful */
1123	serge	2383	if (!ret)
		2384	drm_connector_property_set_value(connector, property, out_resp->value);
		2385	out:
1179	serge	2386	mutex_unlock(&dev->mode_config.mutex);
1123	serge	2387	return ret;
		2388	}
		2389	#endif
		2390
		2391	int drm_mode_connector_attach_encoder(struct drm_connector *connector,
		2392	struct drm_encoder *encoder)
		2393	{
		2394	int i;
		2395
		2396	for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
		2397	if (connector->encoder_ids[i] == 0) {
		2398	connector->encoder_ids[i] = encoder->base.id;
		2399	return 0;
		2400	}
		2401	}
		2402	return -ENOMEM;
		2403	}
		2404	EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
		2405
		2406	void drm_mode_connector_detach_encoder(struct drm_connector *connector,
		2407	struct drm_encoder *encoder)
		2408	{
		2409	int i;
		2410	for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
		2411	if (connector->encoder_ids[i] == encoder->base.id) {
		2412	connector->encoder_ids[i] = 0;
		2413	if (connector->encoder == encoder)
		2414	connector->encoder = NULL;
		2415	break;
		2416	}
		2417	}
		2418	}
		2419	EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
		2420
		2421	bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
		2422	int gamma_size)
		2423	{
		2424	crtc->gamma_size = gamma_size;
		2425
		2426	crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
		2427	if (!crtc->gamma_store) {
		2428	crtc->gamma_size = 0;
		2429	return false;
		2430	}
		2431
		2432	return true;
		2433	}
		2434	EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
		2435
		2436	#if 0
		2437	int drm_mode_gamma_set_ioctl(struct drm_device *dev,
		2438	void data, struct drm_file file_priv)
		2439	{
		2440	struct drm_mode_crtc_lut *crtc_lut = data;
		2441	struct drm_mode_object *obj;
		2442	struct drm_crtc *crtc;
		2443	void r_base, g_base, *b_base;
		2444	int size;
		2445	int ret = 0;
		2446
1179	serge	2447	mutex_lock(&dev->mode_config.mutex);
1123	serge	2448	obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
		2449	if (!obj) {
		2450	ret = -EINVAL;
		2451	goto out;
		2452	}
		2453	crtc = obj_to_crtc(obj);
		2454
		2455	/* memcpy into gamma store */
		2456	if (crtc_lut->gamma_size != crtc->gamma_size) {
		2457	ret = -EINVAL;
		2458	goto out;
		2459	}
		2460
		2461	size = crtc_lut->gamma_size * (sizeof(uint16_t));
		2462	r_base = crtc->gamma_store;
		2463	if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
		2464	ret = -EFAULT;
		2465	goto out;
		2466	}
		2467
		2468	g_base = r_base + size;
		2469	if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
		2470	ret = -EFAULT;
		2471	goto out;
		2472	}
		2473
		2474	b_base = g_base + size;
		2475	if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
		2476	ret = -EFAULT;
		2477	goto out;
		2478	}
		2479
		2480	crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size);
		2481
		2482	out:
1179	serge	2483	mutex_unlock(&dev->mode_config.mutex);
1123	serge	2484	return ret;
		2485
		2486	}
		2487
		2488	int drm_mode_gamma_get_ioctl(struct drm_device *dev,
		2489	void data, struct drm_file file_priv)
		2490	{
		2491	struct drm_mode_crtc_lut *crtc_lut = data;
		2492	struct drm_mode_object *obj;
		2493	struct drm_crtc *crtc;
		2494	void r_base, g_base, *b_base;
		2495	int size;
		2496	int ret = 0;
		2497
1179	serge	2498	mutex_lock(&dev->mode_config.mutex);
1123	serge	2499	obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
		2500	if (!obj) {
		2501	ret = -EINVAL;
		2502	goto out;
		2503	}
		2504	crtc = obj_to_crtc(obj);
		2505
		2506	/* memcpy into gamma store */
		2507	if (crtc_lut->gamma_size != crtc->gamma_size) {
		2508	ret = -EINVAL;
		2509	goto out;
		2510	}
		2511
		2512	size = crtc_lut->gamma_size * (sizeof(uint16_t));
		2513	r_base = crtc->gamma_store;
		2514	if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
		2515	ret = -EFAULT;
		2516	goto out;
		2517	}
		2518
		2519	g_base = r_base + size;
		2520	if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
		2521	ret = -EFAULT;
		2522	goto out;
		2523	}
		2524
		2525	b_base = g_base + size;
		2526	if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
		2527	ret = -EFAULT;
		2528	goto out;
		2529	}
		2530	out:
1179	serge	2531	mutex_unlock(&dev->mode_config.mutex);
1123	serge	2532	return ret;
		2533	}
		2534
		2535	#endif
1179	serge	2536

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(root)/drivers/video/drm/drm_crtc.c – Rev 1321