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

Subversion Repositories Kolibri OS

(root)/drivers/video/drm/drm_crtc.c @ 1412 – Rev 1123