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linux/include/drm/drm_crtc.h
Sean Paul 3b336ec4c5 drm: Add drm_bridge 
This patch adds the notion of a drm_bridge. A bridge is a chained
device which hangs off an encoder. The drm driver using the bridge
should provide the association between encoder and bridge. Once a
bridge is associated with an encoder, it will participate in mode
set, and dpms (via the enable/disable hooks).

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-09-02 10:23:26 +10:00

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/*
* Copyright © 2006 Keith Packard
* Copyright © 2007-2008 Dave Airlie
* Copyright © 2007-2008 Intel Corporation
* Jesse Barnes <jesse.barnes@intel.com>
*
* 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 <linux/i2c.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/idr.h>
#include <linux/fb.h>
#include <drm/drm_mode.h>
#include <drm/drm_fourcc.h>
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_<foo> 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_<foo> 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_<foo> value for core driven polling
* @dpms: current dpms state
* @helper_private: mid-layer private data
* @force: a %DRM_FORCE_<foo> 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);
extern bool drm_detect_hdmi_monitor(struct edid *edid);
extern bool drm_detect_monitor_audio(struct edid *edid);
extern bool drm_rgb_quant_range_selectable(struct edid *edid);
extern int drm_mode_page_flip_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
extern struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,
int hdisplay, int vdisplay, int vrefresh,
bool reduced, bool interlaced, bool margins);
extern struct drm_display_mode *drm_gtf_mode(struct drm_device *dev,
int hdisplay, int vdisplay, int vrefresh,
bool interlaced, int margins);
extern struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
int hdisplay, int vdisplay, int vrefresh,
bool interlaced, int margins, int GTF_M,
int GTF_2C, int GTF_K, int GTF_2J);
extern int drm_add_modes_noedid(struct drm_connector *connector,
int hdisplay, int vdisplay);
extern int drm_edid_header_is_valid(const u8 *raw_edid);
extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);
extern bool drm_edid_is_valid(struct edid *edid);
struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
int hsize, int vsize, int fresh,
bool rb);
extern int drm_mode_create_dumb_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
extern int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
int *bpp);
extern int drm_format_num_planes(uint32_t format);
extern int drm_format_plane_cpp(uint32_t format, int plane);
extern int drm_format_horz_chroma_subsampling(uint32_t format);
extern int drm_format_vert_chroma_subsampling(uint32_t format);
extern const char *drm_get_format_name(uint32_t format);
#endif /* __DRM_CRTC_H__ */
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