Subversion Repositories Kolibri OS

/*

 * Copyright © 2006 Keith Packard

 * Copyright © 2007-2008 Dave Airlie

 * Copyright © 2007-2008 Intel Corporation

 *   Jesse Barnes 

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR

 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

 * OTHER DEALINGS IN THE SOFTWARE.

 */

#ifndef __DRM_CRTC_H__

#define __DRM_CRTC_H__

#include 

#include 

#include 

#include 

#include 

#include 

#include 

struct drm_device;

struct drm_mode_set;

struct drm_framebuffer;

struct drm_object_properties;

struct drm_file;

struct drm_clip_rect;

#define DRM_MODE_OBJECT_CRTC 0xcccccccc

#define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0

#define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0

#define DRM_MODE_OBJECT_MODE 0xdededede

#define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0

#define DRM_MODE_OBJECT_FB 0xfbfbfbfb

#define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb

#define DRM_MODE_OBJECT_PLANE 0xeeeeeeee

#define DRM_MODE_OBJECT_BRIDGE 0xbdbdbdbd

struct drm_mode_object {

	uint32_t id;

	uint32_t type;

	struct drm_object_properties *properties;

};

#define DRM_OBJECT_MAX_PROPERTY 24

struct drm_object_properties {

	int count;

	uint32_t ids[DRM_OBJECT_MAX_PROPERTY];

	uint64_t values[DRM_OBJECT_MAX_PROPERTY];

};

/*

 * Note on terminology:  here, for brevity and convenience, we refer to connector

 * control chips as 'CRTCs'.  They can control any type of connector, VGA, LVDS,

 * DVI, etc.  And 'screen' refers to the whole of the visible display, which

 * may span multiple monitors (and therefore multiple CRTC and connector

 * structures).

 */

enum drm_mode_status {

    MODE_OK	= 0,	/* Mode OK */

    MODE_HSYNC,		/* hsync out of range */

    MODE_VSYNC,		/* vsync out of range */

    MODE_H_ILLEGAL,	/* mode has illegal horizontal timings */

    MODE_V_ILLEGAL,	/* mode has illegal horizontal timings */

    MODE_BAD_WIDTH,	/* requires an unsupported linepitch */

    MODE_NOMODE,	/* no mode with a matching name */

    MODE_NO_INTERLACE,	/* interlaced mode not supported */

    MODE_NO_DBLESCAN,	/* doublescan mode not supported */

    MODE_NO_VSCAN,	/* multiscan mode not supported */

    MODE_MEM,		/* insufficient video memory */

    MODE_VIRTUAL_X,	/* mode width too large for specified virtual size */

    MODE_VIRTUAL_Y,	/* mode height too large for specified virtual size */

    MODE_MEM_VIRT,	/* insufficient video memory given virtual size */

    MODE_NOCLOCK,	/* no fixed clock available */

    MODE_CLOCK_HIGH,	/* clock required is too high */

    MODE_CLOCK_LOW,	/* clock required is too low */

    MODE_CLOCK_RANGE,	/* clock/mode isn't in a ClockRange */

    MODE_BAD_HVALUE,	/* horizontal timing was out of range */

    MODE_BAD_VVALUE,	/* vertical timing was out of range */

    MODE_BAD_VSCAN,	/* VScan value out of range */

    MODE_HSYNC_NARROW,	/* horizontal sync too narrow */

    MODE_HSYNC_WIDE,	/* horizontal sync too wide */

    MODE_HBLANK_NARROW,	/* horizontal blanking too narrow */

    MODE_HBLANK_WIDE,	/* horizontal blanking too wide */

    MODE_VSYNC_NARROW,	/* vertical sync too narrow */

    MODE_VSYNC_WIDE,	/* vertical sync too wide */

    MODE_VBLANK_NARROW,	/* vertical blanking too narrow */

    MODE_VBLANK_WIDE,	/* vertical blanking too wide */

    MODE_PANEL,         /* exceeds panel dimensions */

    MODE_INTERLACE_WIDTH, /* width too large for interlaced mode */

    MODE_ONE_WIDTH,     /* only one width is supported */

    MODE_ONE_HEIGHT,    /* only one height is supported */

    MODE_ONE_SIZE,      /* only one resolution is supported */

    MODE_NO_REDUCED,    /* monitor doesn't accept reduced blanking */

    MODE_UNVERIFIED = -3, /* mode needs to reverified */

    MODE_BAD = -2,	/* unspecified reason */

    MODE_ERROR	= -1	/* error condition */

};

#define DRM_MODE_TYPE_CLOCK_CRTC_C (DRM_MODE_TYPE_CLOCK_C | \

				    DRM_MODE_TYPE_CRTC_C)

#define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \

	.name = nm, .status = 0, .type = (t), .clock = (c), \

	.hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \

	.htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \

	.vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \

	.vscan = (vs), .flags = (f), \

	.base.type = DRM_MODE_OBJECT_MODE

#define CRTC_INTERLACE_HALVE_V 0x1 /* halve V values for interlacing */

struct drm_display_mode {

	/* Header */

	struct list_head head;

	struct drm_mode_object base;

	char name[DRM_DISPLAY_MODE_LEN];

	enum drm_mode_status status;

	unsigned int type;

	/* Proposed mode values */

	int clock;		/* in kHz */

	int hdisplay;

	int hsync_start;

	int hsync_end;

	int htotal;

	int hskew;

	int vdisplay;

	int vsync_start;

	int vsync_end;

	int vtotal;

	int vscan;

	unsigned int flags;

	/* Addressable image size (may be 0 for projectors, etc.) */

	int width_mm;

	int height_mm;

	/* Actual mode we give to hw */

	int clock_index;

	int synth_clock;

	int crtc_hdisplay;

	int crtc_hblank_start;

	int crtc_hblank_end;

	int crtc_hsync_start;

	int crtc_hsync_end;

	int crtc_htotal;

	int crtc_hskew;

	int crtc_vdisplay;

	int crtc_vblank_start;

	int crtc_vblank_end;

	int crtc_vsync_start;

	int crtc_vsync_end;

	int crtc_vtotal;

	/* Driver private mode info */

	int private_size;

	int *private;

	int private_flags;

	int vrefresh;		/* in Hz */

	int hsync;		/* in kHz */

};

enum drm_connector_status {

	connector_status_connected = 1,

	connector_status_disconnected = 2,

	connector_status_unknown = 3,

};

enum subpixel_order {

	SubPixelUnknown = 0,

	SubPixelHorizontalRGB,

	SubPixelHorizontalBGR,

	SubPixelVerticalRGB,

	SubPixelVerticalBGR,

	SubPixelNone,

};

#define DRM_COLOR_FORMAT_RGB444		(1<<0)

#define DRM_COLOR_FORMAT_YCRCB444	(1<<1)

#define DRM_COLOR_FORMAT_YCRCB422	(1<<2)

/*

 * Describes a given display (e.g. CRT or flat panel) and its limitations.

 */

struct drm_display_info {

	char name[DRM_DISPLAY_INFO_LEN];

	/* Physical size */

        unsigned int width_mm;

	unsigned int height_mm;

	/* Clock limits FIXME: storage format */

	unsigned int min_vfreq, max_vfreq;

	unsigned int min_hfreq, max_hfreq;

	unsigned int pixel_clock;

	unsigned int bpc;

	enum subpixel_order subpixel_order;

	u32 color_formats;

	u8 cea_rev;

};

struct drm_framebuffer_funcs {

	/* note: use drm_framebuffer_remove() */

	void (*destroy)(struct drm_framebuffer *framebuffer);

	int (*create_handle)(struct drm_framebuffer *fb,

			     struct drm_file *file_priv,

			     unsigned int *handle);

	/**

	 * Optinal callback for the dirty fb ioctl.

	 *

	 * Userspace can notify the driver via this callback

	 * that a area of the framebuffer has changed and should

	 * be flushed to the display hardware.

	 *

	 * See documentation in drm_mode.h for the struct

	 * drm_mode_fb_dirty_cmd for more information as all

	 * the semantics and arguments have a one to one mapping

	 * on this function.

	 */

	int (*dirty)(struct drm_framebuffer *framebuffer,

		     struct drm_file *file_priv, unsigned flags,

		     unsigned color, struct drm_clip_rect *clips,

		     unsigned num_clips);

};

struct drm_framebuffer {

	struct drm_device *dev;

	/*

	 * Note that the fb is refcounted for the benefit of driver internals,

	 * for example some hw, disabling a CRTC/plane is asynchronous, and

	 * scanout does not actually complete until the next vblank.  So some

	 * cleanup (like releasing the reference(s) on the backing GEM bo(s))

	 * should be deferred.  In cases like this, the driver would like to

	 * hold a ref to the fb even though it has already been removed from

	 * userspace perspective.

	 */

	struct kref refcount;

	/*

	 * Place on the dev->mode_config.fb_list, access protected by

	 * dev->mode_config.fb_lock.

	 */

	struct list_head head;

	struct drm_mode_object base;

	const struct drm_framebuffer_funcs *funcs;

	unsigned int pitches[4];

	unsigned int offsets[4];

	unsigned int width;

	unsigned int height;

	/* depth can be 15 or 16 */

	unsigned int depth;

	int bits_per_pixel;

	int flags;

	uint32_t pixel_format; /* fourcc format */

	struct list_head filp_head;

	/* if you are using the helper */

	void *helper_private;

};

struct drm_property_blob {

	struct drm_mode_object base;

	struct list_head head;

	unsigned int length;

	unsigned char data[];

};

struct drm_property_enum {

	uint64_t value;

	struct list_head head;

	char name[DRM_PROP_NAME_LEN];

};

struct drm_property {

    struct      list_head head;

    struct      drm_mode_object base;

    uint32_t    flags;

    char        name[DRM_PROP_NAME_LEN];

    uint32_t    num_values;

    uint64_t    *values;

	struct list_head enum_blob_list;

};

struct drm_crtc;

struct drm_connector;

struct drm_encoder;

struct drm_pending_vblank_event;

struct drm_plane;

struct drm_bridge;

/**

 * drm_crtc_funcs - control CRTCs for a given device

 * @save: save CRTC state

 * @restore: restore CRTC state

 * @reset: reset CRTC after state has been invalidated (e.g. resume)

 * @cursor_set: setup the cursor

 * @cursor_move: move the cursor

 * @gamma_set: specify color ramp for CRTC

 * @destroy: deinit and free object

 * @set_property: called when a property is changed

 * @set_config: apply a new CRTC configuration

 * @page_flip: initiate a page flip

 *

 * The drm_crtc_funcs structure is the central CRTC management structure

 * in the DRM.  Each CRTC controls one or more connectors (note that the name

 * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.

 * connectors, not just CRTs).

 *

 * Each driver is responsible for filling out this structure at startup time,

 * in addition to providing other modesetting features, like i2c and DDC

 * bus accessors.

 */

struct drm_crtc_funcs {

	/* Save CRTC state */

	void (*save)(struct drm_crtc *crtc); /* suspend? */

	/* Restore CRTC state */

	void (*restore)(struct drm_crtc *crtc); /* resume? */

	/* Reset CRTC state */

	void (*reset)(struct drm_crtc *crtc);

	/* cursor controls */

	int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,

			  uint32_t handle, uint32_t width, uint32_t height);

	int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv,

			   uint32_t handle, uint32_t width, uint32_t height,

			   int32_t hot_x, int32_t hot_y);

	int (*cursor_move)(struct drm_crtc *crtc, int x, int y);

	/* Set gamma on the CRTC */

	void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,

			  uint32_t start, uint32_t size);

	/* Object destroy routine */

	void (*destroy)(struct drm_crtc *crtc);

	int (*set_config)(struct drm_mode_set *set);

	/*

	 * Flip to the given framebuffer.  This implements the page

	 * flip ioctl described in drm_mode.h, specifically, the

	 * implementation must return immediately and block all

	 * rendering to the current fb until the flip has completed.

	 * If userspace set the event flag in the ioctl, the event

	 * argument will point to an event to send back when the flip

	 * completes, otherwise it will be NULL.

	 */

	int (*page_flip)(struct drm_crtc *crtc,

			 struct drm_framebuffer *fb,

			 struct drm_pending_vblank_event *event,

			 uint32_t flags);

	int (*set_property)(struct drm_crtc *crtc,

			    struct drm_property *property, uint64_t val);

};

/**

 * drm_crtc - central CRTC control structure

 * @dev: parent DRM device

 * @head: list management

 * @base: base KMS object for ID tracking etc.

 * @enabled: is this CRTC enabled?

 * @mode: current mode timings

 * @hwmode: mode timings as programmed to hw regs

 * @invert_dimensions: for purposes of error checking crtc vs fb sizes,

 *    invert the width/height of the crtc.  This is used if the driver

 *    is performing 90 or 270 degree rotated scanout

 * @x: x position on screen

 * @y: y position on screen

 * @funcs: CRTC control functions

 * @gamma_size: size of gamma ramp

 * @gamma_store: gamma ramp values

 * @framedur_ns: precise frame timing

 * @framedur_ns: precise line timing

 * @pixeldur_ns: precise pixel timing

 * @helper_private: mid-layer private data

 * @properties: property tracking for this CRTC

 *

 * Each CRTC may have one or more connectors associated with it.  This structure

 * allows the CRTC to be controlled.

 */

struct drm_crtc {

	struct drm_device *dev;

	struct list_head head;

	/**

	 * crtc mutex

	 *

	 * This provides a read lock for the overall crtc state (mode, dpms

	 * state, ...) and a write lock for everything which can be update

	 * without a full modeset (fb, cursor data, ...)

	 */

	struct mutex mutex;

	struct drm_mode_object base;

	/* framebuffer the connector is currently bound to */

	struct drm_framebuffer *fb;

	/* Temporary tracking of the old fb while a modeset is ongoing. Used

	 * by drm_mode_set_config_internal to implement correct refcounting. */

	struct drm_framebuffer *old_fb;

	bool enabled;

	/* Requested mode from modesetting. */

	struct drm_display_mode mode;

	/* Programmed mode in hw, after adjustments for encoders,

	 * crtc, panel scaling etc. Needed for timestamping etc.

	 */

	struct drm_display_mode hwmode;

	bool invert_dimensions;

	int x, y;

	const struct drm_crtc_funcs *funcs;

	/* CRTC gamma size for reporting to userspace */

	uint32_t gamma_size;

	uint16_t *gamma_store;

	/* Constants needed for precise vblank and swap timestamping. */

	s64 framedur_ns, linedur_ns, pixeldur_ns;

	/* if you are using the helper */

	void *helper_private;

	struct drm_object_properties properties;

};

/**

 * drm_connector_funcs - control connectors on a given device

 * @dpms: set power state (see drm_crtc_funcs above)

 * @save: save connector state

 * @restore: restore connector state

 * @reset: reset connector after state has been invalidated (e.g. resume)

 * @detect: is this connector active?

 * @fill_modes: fill mode list for this connector

 * @set_property: property for this connector may need an update

 * @destroy: make object go away

 * @force: notify the driver that the connector is forced on

 *

 * Each CRTC may have one or more connectors attached to it.  The functions

 * below allow the core DRM code to control connectors, enumerate available modes,

 * etc.

 */

struct drm_connector_funcs {

	void (*dpms)(struct drm_connector *connector, int mode);

	void (*save)(struct drm_connector *connector);

	void (*restore)(struct drm_connector *connector);

	void (*reset)(struct drm_connector *connector);

	/* Check to see if anything is attached to the connector.

	 * @force is set to false whilst polling, true when checking the

	 * connector due to user request. @force can be used by the driver

	 * to avoid expensive, destructive operations during automated

	 * probing.

	 */

	enum drm_connector_status (*detect)(struct drm_connector *connector,

					    bool force);

	int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);

	int (*set_property)(struct drm_connector *connector, struct drm_property *property,

			     uint64_t val);

	void (*destroy)(struct drm_connector *connector);

	void (*force)(struct drm_connector *connector);

};

/**

 * drm_encoder_funcs - encoder controls

 * @reset: reset state (e.g. at init or resume time)

 * @destroy: cleanup and free associated data

 *

 * Encoders sit between CRTCs and connectors.

 */

struct drm_encoder_funcs {

	void (*reset)(struct drm_encoder *encoder);

	void (*destroy)(struct drm_encoder *encoder);

};

#define DRM_CONNECTOR_MAX_ENCODER 3

/**

 * drm_encoder - central DRM encoder structure

 * @dev: parent DRM device

 * @head: list management

 * @base: base KMS object

 * @encoder_type: one of the %DRM_MODE_ENCODER_ types in drm_mode.h

 * @possible_crtcs: bitmask of potential CRTC bindings

 * @possible_clones: bitmask of potential sibling encoders for cloning

 * @crtc: currently bound CRTC

 * @bridge: bridge associated to the encoder

 * @funcs: control functions

 * @helper_private: mid-layer private data

 *

 * CRTCs drive pixels to encoders, which convert them into signals

 * appropriate for a given connector or set of connectors.

 */

struct drm_encoder {

	struct drm_device *dev;

	struct list_head head;

	struct drm_mode_object base;

	int encoder_type;

	uint32_t possible_crtcs;

	uint32_t possible_clones;

	struct drm_crtc *crtc;

	struct drm_bridge *bridge;

	const struct drm_encoder_funcs *funcs;

	void *helper_private;

};

enum drm_connector_force {

	DRM_FORCE_UNSPECIFIED,

	DRM_FORCE_OFF,

	DRM_FORCE_ON,         /* force on analog part normally */

	DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */

};

/* should we poll this connector for connects and disconnects */

/* hot plug detectable */

#define DRM_CONNECTOR_POLL_HPD (1 << 0)

/* poll for connections */

#define DRM_CONNECTOR_POLL_CONNECT (1 << 1)

/* can cleanly poll for disconnections without flickering the screen */

/* DACs should rarely do this without a lot of testing */

#define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)

#define MAX_ELD_BYTES	128

/**

 * drm_connector - central DRM connector control structure

 * @dev: parent DRM device

 * @kdev: kernel device for sysfs attributes

 * @attr: sysfs attributes

 * @head: list management

 * @base: base KMS object

 * @connector_type: one of the %DRM_MODE_CONNECTOR_ types from drm_mode.h

 * @connector_type_id: index into connector type enum

 * @interlace_allowed: can this connector handle interlaced modes?

 * @doublescan_allowed: can this connector handle doublescan?

 * @modes: modes available on this connector (from fill_modes() + user)

 * @status: one of the drm_connector_status enums (connected, not, or unknown)

 * @probed_modes: list of modes derived directly from the display

 * @display_info: information about attached display (e.g. from EDID)

 * @funcs: connector control functions

 * @edid_blob_ptr: DRM property containing EDID if present

 * @properties: property tracking for this connector

 * @polled: a %DRM_CONNECTOR_POLL_ value for core driven polling

 * @dpms: current dpms state

 * @helper_private: mid-layer private data

 * @force: a %DRM_FORCE_ state for forced mode sets

 * @encoder_ids: valid encoders for this connector

 * @encoder: encoder driving this connector, if any

 * @eld: EDID-like data, if present

 * @dvi_dual: dual link DVI, if found

 * @max_tmds_clock: max clock rate, if found

 * @latency_present: AV delay info from ELD, if found

 * @video_latency: video latency info from ELD, if found

 * @audio_latency: audio latency info from ELD, if found

 * @null_edid_counter: track sinks that give us all zeros for the EDID

 *

 * Each connector may be connected to one or more CRTCs, or may be clonable by

 * another connector if they can share a CRTC.  Each connector also has a specific

 * position in the broader display (referred to as a 'screen' though it could

 * span multiple monitors).

 */

struct drm_connector {

	struct drm_device *dev;

	struct device kdev;

	struct device_attribute *attr;

	struct list_head head;

	struct drm_mode_object base;

	int connector_type;

	int connector_type_id;

	bool interlace_allowed;

	bool doublescan_allowed;

	struct list_head modes; /* list of modes on this connector */

	enum drm_connector_status status;

	/* these are modes added by probing with DDC or the BIOS */

	struct list_head probed_modes;

	struct drm_display_info display_info;

	const struct drm_connector_funcs *funcs;

	struct drm_property_blob *edid_blob_ptr;

	struct drm_object_properties properties;

	uint8_t polled; /* DRM_CONNECTOR_POLL_* */

	/* requested DPMS state */

	int dpms;

	void *helper_private;

	/* forced on connector */

	enum drm_connector_force force;

	uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];

	struct drm_encoder *encoder; /* currently active encoder */

	/* EDID bits */

	uint8_t eld[MAX_ELD_BYTES];

	bool dvi_dual;

	int max_tmds_clock;	/* in MHz */

	bool latency_present[2];

	int video_latency[2];	/* [0]: progressive, [1]: interlaced */

	int audio_latency[2];

	int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */

	unsigned bad_edid_counter;

};

/**

 * drm_plane_funcs - driver plane control functions

 * @update_plane: update the plane configuration

 * @disable_plane: shut down the plane

 * @destroy: clean up plane resources

 * @set_property: called when a property is changed

 */

struct drm_plane_funcs {

	int (*update_plane)(struct drm_plane *plane,

			    struct drm_crtc *crtc, struct drm_framebuffer *fb,

			    int crtc_x, int crtc_y,

			    unsigned int crtc_w, unsigned int crtc_h,

			    uint32_t src_x, uint32_t src_y,

			    uint32_t src_w, uint32_t src_h);

	int (*disable_plane)(struct drm_plane *plane);

	void (*destroy)(struct drm_plane *plane);

	int (*set_property)(struct drm_plane *plane,

			    struct drm_property *property, uint64_t val);

};

/**

 * drm_plane - central DRM plane control structure

 * @dev: DRM device this plane belongs to

 * @head: for list management

 * @base: base mode object

 * @possible_crtcs: pipes this plane can be bound to

 * @format_types: array of formats supported by this plane

 * @format_count: number of formats supported

 * @crtc: currently bound CRTC

 * @fb: currently bound fb

 * @funcs: helper functions

 * @properties: property tracking for this plane

 */

struct drm_plane {

	struct drm_device *dev;

	struct list_head head;

	struct drm_mode_object base;

	uint32_t possible_crtcs;

	uint32_t *format_types;

	uint32_t format_count;

	struct drm_crtc *crtc;

	struct drm_framebuffer *fb;

	const struct drm_plane_funcs *funcs;

	struct drm_object_properties properties;

};

/**

 * drm_bridge_funcs - drm_bridge control functions

 * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge

 * @disable: Called right before encoder prepare, disables the bridge

 * @post_disable: Called right after encoder prepare, for lockstepped disable

 * @mode_set: Set this mode to the bridge

 * @pre_enable: Called right before encoder commit, for lockstepped commit

 * @enable: Called right after encoder commit, enables the bridge

 * @destroy: make object go away

 */

struct drm_bridge_funcs {

	bool (*mode_fixup)(struct drm_bridge *bridge,

			   const struct drm_display_mode *mode,

			   struct drm_display_mode *adjusted_mode);

	void (*disable)(struct drm_bridge *bridge);

	void (*post_disable)(struct drm_bridge *bridge);

	void (*mode_set)(struct drm_bridge *bridge,

			 struct drm_display_mode *mode,

			 struct drm_display_mode *adjusted_mode);

	void (*pre_enable)(struct drm_bridge *bridge);

	void (*enable)(struct drm_bridge *bridge);

	void (*destroy)(struct drm_bridge *bridge);

};

/**

 * drm_bridge - central DRM bridge control structure

 * @dev: DRM device this bridge belongs to

 * @head: list management

 * @base: base mode object

 * @funcs: control functions

 * @driver_private: pointer to the bridge driver's internal context

 */

struct drm_bridge {

	struct drm_device *dev;

	struct list_head head;

	struct drm_mode_object base;

	const struct drm_bridge_funcs *funcs;

	void *driver_private;

};

/**

 * drm_mode_set - new values for a CRTC config change

 * @head: list management

 * @fb: framebuffer to use for new config

 * @crtc: CRTC whose configuration we're about to change

 * @mode: mode timings to use

 * @x: position of this CRTC relative to @fb

 * @y: position of this CRTC relative to @fb

 * @connectors: array of connectors to drive with this CRTC if possible

 * @num_connectors: size of @connectors array

 *

 * Represents a single crtc the connectors that it drives with what mode

 * and from which framebuffer it scans out from.

 *

 * This is used to set modes.

 */

struct drm_mode_set {

	struct drm_framebuffer *fb;

	struct drm_crtc *crtc;

	struct drm_display_mode *mode;

	uint32_t x;

	uint32_t y;

	struct drm_connector **connectors;

	size_t num_connectors;

};

/**

 * struct drm_mode_config_funcs - basic driver provided mode setting functions

 * @fb_create: create a new framebuffer object

 * @output_poll_changed: function to handle output configuration changes

 *

 * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that

 * involve drivers.

 */

struct drm_mode_config_funcs {

	struct drm_framebuffer *(*fb_create)(struct drm_device *dev,

					     struct drm_file *file_priv,

					     struct drm_mode_fb_cmd2 *mode_cmd);

	void (*output_poll_changed)(struct drm_device *dev);

};

/**

 * drm_mode_group - group of mode setting resources for potential sub-grouping

 * @num_crtcs: CRTC count

 * @num_encoders: encoder count

 * @num_connectors: connector count

 * @id_list: list of KMS object IDs in this group

 *

 * Currently this simply tracks the global mode setting state.  But in the

 * future it could allow groups of objects to be set aside into independent

 * control groups for use by different user level processes (e.g. two X servers

 * running simultaneously on different heads, each with their own mode

 * configuration and freedom of mode setting).

 */

struct drm_mode_group {

	uint32_t num_crtcs;

	uint32_t num_encoders;

	uint32_t num_connectors;

	uint32_t num_bridges;

	/* list of object IDs for this group */

	uint32_t *id_list;

};

/**

 * drm_mode_config - Mode configuration control structure

 * @mutex: mutex protecting KMS related lists and structures

 * @idr_mutex: mutex for KMS ID allocation and management

 * @crtc_idr: main KMS ID tracking object

 * @num_fb: number of fbs available

 * @fb_list: list of framebuffers available

 * @num_connector: number of connectors on this device

 * @connector_list: list of connector objects

 * @num_bridge: number of bridges on this device

 * @bridge_list: list of bridge objects

 * @num_encoder: number of encoders on this device

 * @encoder_list: list of encoder objects

 * @num_crtc: number of CRTCs on this device

 * @crtc_list: list of CRTC objects

 * @min_width: minimum pixel width on this device

 * @min_height: minimum pixel height on this device

 * @max_width: maximum pixel width on this device

 * @max_height: maximum pixel height on this device

 * @funcs: core driver provided mode setting functions

 * @fb_base: base address of the framebuffer

 * @poll_enabled: track polling status for this device

 * @output_poll_work: delayed work for polling in process context

 * @*_property: core property tracking

 *

 * Core mode resource tracking structure.  All CRTC, encoders, and connectors

 * enumerated by the driver are added here, as are global properties.  Some

 * global restrictions are also here, e.g. dimension restrictions.

 */

struct drm_mode_config {

	struct mutex mutex; /* protects configuration (mode lists etc.) */

	struct mutex idr_mutex; /* for IDR management */

    struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */

	/* this is limited to one for now */

	/**

	 * fb_lock - mutex to protect fb state

	 *

	 * Besides the global fb list his also protects the fbs list in the

	 * file_priv

	 */

	struct mutex fb_lock;

	int num_fb;

	struct list_head fb_list;

	int num_connector;

	struct list_head connector_list;

	int num_bridge;

	struct list_head bridge_list;

	int num_encoder;

	struct list_head encoder_list;

	int num_plane;

	struct list_head plane_list;

	int num_crtc;

	struct list_head crtc_list;

	struct list_head property_list;

	int min_width, min_height;

	int max_width, max_height;

	const struct drm_mode_config_funcs *funcs;

	resource_size_t fb_base;

	/* output poll support */

	bool poll_enabled;

	bool poll_running;

	struct delayed_work output_poll_work;

	/* pointers to standard properties */

	struct list_head property_blob_list;

	struct drm_property *edid_property;

	struct drm_property *dpms_property;

	/* DVI-I properties */

	struct drm_property *dvi_i_subconnector_property;

	struct drm_property *dvi_i_select_subconnector_property;

	/* TV properties */

	struct drm_property *tv_subconnector_property;

	struct drm_property *tv_select_subconnector_property;

	struct drm_property *tv_mode_property;

	struct drm_property *tv_left_margin_property;

	struct drm_property *tv_right_margin_property;

	struct drm_property *tv_top_margin_property;

	struct drm_property *tv_bottom_margin_property;

	struct drm_property *tv_brightness_property;

	struct drm_property *tv_contrast_property;

	struct drm_property *tv_flicker_reduction_property;

	struct drm_property *tv_overscan_property;

	struct drm_property *tv_saturation_property;

	struct drm_property *tv_hue_property;

	/* Optional properties */

	struct drm_property *scaling_mode_property;

	struct drm_property *dirty_info_property;

	/* dumb ioctl parameters */

	uint32_t preferred_depth, prefer_shadow;

	/* whether async page flip is supported or not */

	bool async_page_flip;

};

#define obj_to_crtc(x) container_of(x, struct drm_crtc, base)

#define obj_to_connector(x) container_of(x, struct drm_connector, base)

#define obj_to_encoder(x) container_of(x, struct drm_encoder, base)

#define obj_to_mode(x) container_of(x, struct drm_display_mode, base)

#define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)

#define obj_to_property(x) container_of(x, struct drm_property, base)

#define obj_to_blob(x) container_of(x, struct drm_property_blob, base)

#define obj_to_plane(x) container_of(x, struct drm_plane, base)

struct drm_prop_enum_list {

	int type;

	char *name;

};

extern void drm_modeset_lock_all(struct drm_device *dev);

extern void drm_modeset_unlock_all(struct drm_device *dev);

extern void drm_warn_on_modeset_not_all_locked(struct drm_device *dev);

extern int drm_crtc_init(struct drm_device *dev,

			  struct drm_crtc *crtc,

			  const struct drm_crtc_funcs *funcs);

extern void drm_crtc_cleanup(struct drm_crtc *crtc);

extern void drm_connector_ida_init(void);

extern void drm_connector_ida_destroy(void);

extern int drm_connector_init(struct drm_device *dev,

			    struct drm_connector *connector,

			    const struct drm_connector_funcs *funcs,

			    int connector_type);

extern void drm_connector_cleanup(struct drm_connector *connector);

/* helper to unplug all connectors from sysfs for device */

extern void drm_connector_unplug_all(struct drm_device *dev);

extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,

			   const struct drm_bridge_funcs *funcs);

extern void drm_bridge_cleanup(struct drm_bridge *bridge);

extern int drm_encoder_init(struct drm_device *dev,

			     struct drm_encoder *encoder,

			     const struct drm_encoder_funcs *funcs,

			     int encoder_type);

extern int drm_plane_init(struct drm_device *dev,

			  struct drm_plane *plane,

			  unsigned long possible_crtcs,

			  const struct drm_plane_funcs *funcs,

			  const uint32_t *formats, uint32_t format_count,

			  bool priv);

extern void drm_plane_cleanup(struct drm_plane *plane);

extern void drm_plane_force_disable(struct drm_plane *plane);

extern void drm_encoder_cleanup(struct drm_encoder *encoder);

extern const char *drm_get_connector_name(const struct drm_connector *connector);

extern const char *drm_get_connector_status_name(enum drm_connector_status status);

extern const char *drm_get_dpms_name(int val);

extern const char *drm_get_dvi_i_subconnector_name(int val);

extern const char *drm_get_dvi_i_select_name(int val);

extern const char *drm_get_tv_subconnector_name(int val);

extern const char *drm_get_tv_select_name(int val);

extern void drm_fb_release(struct drm_file *file_priv);

extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);

extern bool drm_probe_ddc(struct i2c_adapter *adapter);

extern struct edid *drm_get_edid(struct drm_connector *connector,

				 struct i2c_adapter *adapter);

extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);

extern void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);

extern void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src);

extern struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,

						   const struct drm_display_mode *mode);

extern void drm_mode_debug_printmodeline(const struct drm_display_mode *mode);

extern void drm_mode_config_init(struct drm_device *dev);

extern void drm_mode_config_reset(struct drm_device *dev);

extern void drm_mode_config_cleanup(struct drm_device *dev);

extern void drm_mode_set_name(struct drm_display_mode *mode);

extern bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2);

extern bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2);

extern int drm_mode_width(const struct drm_display_mode *mode);

extern int drm_mode_height(const struct drm_display_mode *mode);

/* for us by fb module */

extern struct drm_display_mode *drm_mode_create(struct drm_device *dev);

extern void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);

extern void drm_mode_validate_size(struct drm_device *dev,

                  struct list_head *mode_list,

                  int maxX, int maxY, int maxPitch);

extern void drm_mode_prune_invalid(struct drm_device *dev,

                  struct list_head *mode_list, bool verbose);

extern void drm_mode_sort(struct list_head *mode_list);

extern int drm_mode_hsync(const struct drm_display_mode *mode);

extern int drm_mode_vrefresh(const struct drm_display_mode *mode);

extern void drm_mode_set_crtcinfo(struct drm_display_mode *p,

				  int adjust_flags);

extern void drm_mode_connector_list_update(struct drm_connector *connector);

extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,

                       struct edid *edid);

extern int drm_object_property_set_value(struct drm_mode_object *obj,

					 struct drm_property *property,

					 uint64_t val);

extern int drm_object_property_get_value(struct drm_mode_object *obj,

					 struct drm_property *property,

					 uint64_t *value);

extern int drm_framebuffer_init(struct drm_device *dev,

				struct drm_framebuffer *fb,

				const struct drm_framebuffer_funcs *funcs);

extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,

						      uint32_t id);

extern void drm_framebuffer_unreference(struct drm_framebuffer *fb);

extern void drm_framebuffer_reference(struct drm_framebuffer *fb);

extern void drm_framebuffer_remove(struct drm_framebuffer *fb);

extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);

extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);

extern void drm_object_attach_property(struct drm_mode_object *obj,

				       struct drm_property *property,

				       uint64_t init_val);

extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,

						const char *name, int num_values);

extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,

					 const char *name,

					 const struct drm_prop_enum_list *props,

					 int num_values);

struct drm_property *drm_property_create_bitmask(struct drm_device *dev,

					 int flags, const char *name,

					 const struct drm_prop_enum_list *props,

					 int num_values);

struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,

					 const char *name,

					 uint64_t min, uint64_t max);

extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);

extern int drm_property_add_enum(struct drm_property *property, int index,

				 uint64_t value, const char *name);

extern int drm_mode_create_dvi_i_properties(struct drm_device *dev);

extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats,

				     char *formats[]);

extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);

extern int drm_mode_create_dirty_info_property(struct drm_device *dev);

extern const char *drm_get_encoder_name(const struct drm_encoder *encoder);

extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,

					     struct drm_encoder *encoder);

extern void drm_mode_connector_detach_encoder(struct drm_connector *connector,

					   struct drm_encoder *encoder);

extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,

					 int gamma_size);

extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,

		uint32_t id, uint32_t type);

/* IOCTLs */

extern int drm_mode_getresources(struct drm_device *dev,

				 void *data, struct drm_file *file_priv);

extern int drm_mode_getplane_res(struct drm_device *dev, void *data,

				   struct drm_file *file_priv);

extern int drm_mode_getcrtc(struct drm_device *dev,

			    void *data, struct drm_file *file_priv);

extern int drm_mode_getconnector(struct drm_device *dev,

			      void *data, struct drm_file *file_priv);

extern int drm_mode_set_config_internal(struct drm_mode_set *set);

extern int drm_mode_setcrtc(struct drm_device *dev,

			    void *data, struct drm_file *file_priv);

extern int drm_mode_getplane(struct drm_device *dev,

			       void *data, struct drm_file *file_priv);

extern int drm_mode_setplane(struct drm_device *dev,

			       void *data, struct drm_file *file_priv);

extern int drm_mode_cursor_ioctl(struct drm_device *dev,

				void *data, struct drm_file *file_priv);

extern int drm_mode_cursor2_ioctl(struct drm_device *dev,

				void *data, struct drm_file *file_priv);

extern int drm_mode_addfb(struct drm_device *dev,

			  void *data, struct drm_file *file_priv);

extern int drm_mode_addfb2(struct drm_device *dev,

			   void *data, struct drm_file *file_priv);

extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);

extern int drm_mode_rmfb(struct drm_device *dev,

			 void *data, struct drm_file *file_priv);

extern int drm_mode_getfb(struct drm_device *dev,

			  void *data, struct drm_file *file_priv);

extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev,

				  void *data, struct drm_file *file_priv);

extern int drm_mode_getproperty_ioctl(struct drm_device *dev,

				      void *data, struct drm_file *file_priv);

extern int drm_mode_getblob_ioctl(struct drm_device *dev,

				  void *data, struct drm_file *file_priv);

extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev,

					      void *data, struct drm_file *file_priv);

extern int drm_mode_getencoder(struct drm_device *dev,

			       void *data, struct drm_file *file_priv);

extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,

				    void *data, struct drm_file *file_priv);

extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,

				    void *data, struct drm_file *file_priv);

extern u8 drm_match_cea_mode(const struct drm_display_mode *to_match);