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

Subversion Repositories Kolibri OS

(root)/drivers/video/drm/drm_crtc.c – Rev 1126